drivers/scsi/lpfc/lpfc_init.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2017-2021 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *
   6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
  10  *                                                                 *
  11  * This program is free software; you can redistribute it and/or   *
  12  * modify it under the terms of version 2 of the GNU General       *
  13  * Public License as published by the Free Software Foundation.    *
  14  * This program is distributed in the hope that it will be useful. *
  15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  20  * more details, a copy of which can be found in the file COPYING  *
  21  * included with this package.                                     *
  22  *******************************************************************/
  23
  24 #include <linux/blkdev.h>
  25 #include <linux/delay.h>
  26 #include <linux/dma-mapping.h>
  27 #include <linux/idr.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/module.h>
  30 #include <linux/kthread.h>
  31 #include <linux/pci.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/ctype.h>
  34 #include <linux/aer.h>
  35 #include <linux/slab.h>
  36 #include <linux/firmware.h>
  37 #include <linux/miscdevice.h>
  38 #include <linux/percpu.h>
  39 #include <linux/msi.h>
  40 #include <linux/irq.h>
  41 #include <linux/bitops.h>
  42 #include <linux/crash_dump.h>
  43 #include <linux/cpu.h>
  44 #include <linux/cpuhotplug.h>
  45
  46 #include <scsi/scsi.h>
  47 #include <scsi/scsi_device.h>
  48 #include <scsi/scsi_host.h>
  49 #include <scsi/scsi_transport_fc.h>
  50 #include <scsi/scsi_tcq.h>
  51 #include <scsi/fc/fc_fs.h>
  52
  53 #include "lpfc_hw4.h"
  54 #include "lpfc_hw.h"
  55 #include "lpfc_sli.h"
  56 #include "lpfc_sli4.h"
  57 #include "lpfc_nl.h"
  58 #include "lpfc_disc.h"
  59 #include "lpfc.h"
  60 #include "lpfc_scsi.h"
  61 #include "lpfc_nvme.h"
  62 #include "lpfc_logmsg.h"
  63 #include "lpfc_crtn.h"
  64 #include "lpfc_vport.h"
  65 #include "lpfc_version.h"
  66 #include "lpfc_ids.h"
  67
  68 static enum cpuhp_state lpfc_cpuhp_state;
  69 /* Used when mapping IRQ vectors in a driver centric manner */
  70 static uint32_t lpfc_present_cpu;
  71
  72 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba);
  73 static void lpfc_cpuhp_remove(struct lpfc_hba *phba);
  74 static void lpfc_cpuhp_add(struct lpfc_hba *phba);
  75 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
  76 static int lpfc_post_rcv_buf(struct lpfc_hba *);
  77 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
  78 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
  79 static int lpfc_setup_endian_order(struct lpfc_hba *);
  80 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
  81 static void lpfc_free_els_sgl_list(struct lpfc_hba *);
  82 static void lpfc_free_nvmet_sgl_list(struct lpfc_hba *);
  83 static void lpfc_init_sgl_list(struct lpfc_hba *);
  84 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
  85 static void lpfc_free_active_sgl(struct lpfc_hba *);
  86 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
  87 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
  88 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
  89 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
  90 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
  91 static void lpfc_sli4_disable_intr(struct lpfc_hba *);
  92 static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
  93 static void lpfc_sli4_oas_verify(struct lpfc_hba *phba);
  94 static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int);
  95 static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *);
  96 static int lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *);
  97
  98 static struct scsi_transport_template *lpfc_transport_template = NULL;
  99 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
 100 static DEFINE_IDR(lpfc_hba_index);
 101 #define LPFC_NVMET_BUF_POST 254
 102 static int lpfc_vmid_res_alloc(struct lpfc_hba *phba, struct lpfc_vport *vport);
 103
 104 /**
 105  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
 106  * @phba: pointer to lpfc hba data structure.
 107  *
 108  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
 109  * mailbox command. It retrieves the revision information from the HBA and
 110  * collects the Vital Product Data (VPD) about the HBA for preparing the
 111  * configuration of the HBA.
 112  *
 113  * Return codes:
 114  *   0 - success.
 115  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
 116  *   Any other value - indicates an error.
 117  **/
 118 int
 119 lpfc_config_port_prep(struct lpfc_hba *phba)
 120 {
 121         lpfc_vpd_t *vp = &phba->vpd;
 122         int i = 0, rc;
 123         LPFC_MBOXQ_t *pmb;
 124         MAILBOX_t *mb;
 125         char *lpfc_vpd_data = NULL;
 126         uint16_t offset = 0;
 127         static char licensed[56] =
 128                     "key unlock for use with gnu public licensed code only\0";
 129         static int init_key = 1;
 130
 131         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 132         if (!pmb) {
 133                 phba->link_state = LPFC_HBA_ERROR;
 134                 return -ENOMEM;
 135         }
 136
 137         mb = &pmb->u.mb;
 138         phba->link_state = LPFC_INIT_MBX_CMDS;
 139
 140         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
 141                 if (init_key) {
 142                         uint32_t *ptext = (uint32_t *) licensed;
 143
 144                         for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
 145                                 *ptext = cpu_to_be32(*ptext);
 146                         init_key = 0;
 147                 }
 148
 149                 lpfc_read_nv(phba, pmb);
 150                 memset((char*)mb->un.varRDnvp.rsvd3, 0,
 151                         sizeof (mb->un.varRDnvp.rsvd3));
 152                 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
 153                          sizeof (licensed));
 154
 155                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 156
 157                 if (rc != MBX_SUCCESS) {
 158                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 159                                         "0324 Config Port initialization "
 160                                         "error, mbxCmd x%x READ_NVPARM, "
 161                                         "mbxStatus x%x\n",
 162                                         mb->mbxCommand, mb->mbxStatus);
 163                         mempool_free(pmb, phba->mbox_mem_pool);
 164                         return -ERESTART;
 165                 }
 166                 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
 167                        sizeof(phba->wwnn));
 168                 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
 169                        sizeof(phba->wwpn));
 170         }
 171
 172         /*
 173          * Clear all option bits except LPFC_SLI3_BG_ENABLED,
 174          * which was already set in lpfc_get_cfgparam()
 175          */
 176         phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;
 177
 178         /* Setup and issue mailbox READ REV command */
 179         lpfc_read_rev(phba, pmb);
 180         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 181         if (rc != MBX_SUCCESS) {
 182                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 183                                 "0439 Adapter failed to init, mbxCmd x%x "
 184                                 "READ_REV, mbxStatus x%x\n",
 185                                 mb->mbxCommand, mb->mbxStatus);
 186                 mempool_free( pmb, phba->mbox_mem_pool);
 187                 return -ERESTART;
 188         }
 189
 190
 191         /*
 192          * The value of rr must be 1 since the driver set the cv field to 1.
 193          * This setting requires the FW to set all revision fields.
 194          */
 195         if (mb->un.varRdRev.rr == 0) {
 196                 vp->rev.rBit = 0;
 197                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 198                                 "0440 Adapter failed to init, READ_REV has "
 199                                 "missing revision information.\n");
 200                 mempool_free(pmb, phba->mbox_mem_pool);
 201                 return -ERESTART;
 202         }
 203
 204         if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
 205                 mempool_free(pmb, phba->mbox_mem_pool);
 206                 return -EINVAL;
 207         }
 208
 209         /* Save information as VPD data */
 210         vp->rev.rBit = 1;
 211         memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
 212         vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
 213         memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
 214         vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
 215         memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
 216         vp->rev.biuRev = mb->un.varRdRev.biuRev;
 217         vp->rev.smRev = mb->un.varRdRev.smRev;
 218         vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
 219         vp->rev.endecRev = mb->un.varRdRev.endecRev;
 220         vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
 221         vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
 222         vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
 223         vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
 224         vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
 225         vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
 226
 227         /* If the sli feature level is less then 9, we must
 228          * tear down all RPIs and VPIs on link down if NPIV
 229          * is enabled.
 230          */
 231         if (vp->rev.feaLevelHigh < 9)
 232                 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
 233
 234         if (lpfc_is_LC_HBA(phba->pcidev->device))
 235                 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
 236                                                 sizeof (phba->RandomData));
 237
 238         /* Get adapter VPD information */
 239         lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
 240         if (!lpfc_vpd_data)
 241                 goto out_free_mbox;
 242         do {
 243                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
 244                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 245
 246                 if (rc != MBX_SUCCESS) {
 247                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 248                                         "0441 VPD not present on adapter, "
 249                                         "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
 250                                         mb->mbxCommand, mb->mbxStatus);
 251                         mb->un.varDmp.word_cnt = 0;
 252                 }
 253                 /* dump mem may return a zero when finished or we got a
 254                  * mailbox error, either way we are done.
 255                  */
 256                 if (mb->un.varDmp.word_cnt == 0)
 257                         break;
 258
 259                 if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
 260                         mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
 261                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
 262                                       lpfc_vpd_data + offset,
 263                                       mb->un.varDmp.word_cnt);
 264                 offset += mb->un.varDmp.word_cnt;
 265         } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
 266
 267         lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
 268
 269         kfree(lpfc_vpd_data);
 270 out_free_mbox:
 271         mempool_free(pmb, phba->mbox_mem_pool);
 272         return 0;
 273 }
 274
 275 /**
 276  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
 277  * @phba: pointer to lpfc hba data structure.
 278  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 279  *
 280  * This is the completion handler for driver's configuring asynchronous event
 281  * mailbox command to the device. If the mailbox command returns successfully,
 282  * it will set internal async event support flag to 1; otherwise, it will
 283  * set internal async event support flag to 0.
 284  **/
 285 static void
 286 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 287 {
 288         if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
 289                 phba->temp_sensor_support = 1;
 290         else
 291                 phba->temp_sensor_support = 0;
 292         mempool_free(pmboxq, phba->mbox_mem_pool);
 293         return;
 294 }
 295
 296 /**
 297  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
 298  * @phba: pointer to lpfc hba data structure.
 299  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 300  *
 301  * This is the completion handler for dump mailbox command for getting
 302  * wake up parameters. When this command complete, the response contain
 303  * Option rom version of the HBA. This function translate the version number
 304  * into a human readable string and store it in OptionROMVersion.
 305  **/
 306 static void
 307 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 308 {
 309         struct prog_id *prg;
 310         uint32_t prog_id_word;
 311         char dist = ' ';
 312         /* character array used for decoding dist type. */
 313         char dist_char[] = "nabx";
 314
 315         if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
 316                 mempool_free(pmboxq, phba->mbox_mem_pool);
 317                 return;
 318         }
 319
 320         prg = (struct prog_id *) &prog_id_word;
 321
 322         /* word 7 contain option rom version */
 323         prog_id_word = pmboxq->u.mb.un.varWords[7];
 324
 325         /* Decode the Option rom version word to a readable string */
 326         if (prg->dist < 4)
 327                 dist = dist_char[prg->dist];
 328
 329         if ((prg->dist == 3) && (prg->num == 0))
 330                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d",
 331                         prg->ver, prg->rev, prg->lev);
 332         else
 333                 snprintf(phba->OptionROMVersion, 32, "%d.%d%d%c%d",
 334                         prg->ver, prg->rev, prg->lev,
 335                         dist, prg->num);
 336         mempool_free(pmboxq, phba->mbox_mem_pool);
 337         return;
 338 }
 339
 340 /**
 341  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
 342  *      cfg_soft_wwnn, cfg_soft_wwpn
 343  * @vport: pointer to lpfc vport data structure.
 344  *
 345  *
 346  * Return codes
 347  *   None.
 348  **/
 349 void
 350 lpfc_update_vport_wwn(struct lpfc_vport *vport)
 351 {
 352         uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
 353         u32 *fawwpn_key = (u32 *)&vport->fc_sparam.un.vendorVersion[0];
 354
 355         /* If the soft name exists then update it using the service params */
 356         if (vport->phba->cfg_soft_wwnn)
 357                 u64_to_wwn(vport->phba->cfg_soft_wwnn,
 358                            vport->fc_sparam.nodeName.u.wwn);
 359         if (vport->phba->cfg_soft_wwpn)
 360                 u64_to_wwn(vport->phba->cfg_soft_wwpn,
 361                            vport->fc_sparam.portName.u.wwn);
 362
 363         /*
 364          * If the name is empty or there exists a soft name
 365          * then copy the service params name, otherwise use the fc name
 366          */
 367         if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
 368                 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 369                         sizeof(struct lpfc_name));
 370         else
 371                 memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
 372                         sizeof(struct lpfc_name));
 373
 374         /*
 375          * If the port name has changed, then set the Param changes flag
 376          * to unreg the login
 377          */
 378         if (vport->fc_portname.u.wwn[0] != 0 &&
 379                 memcmp(&vport->fc_portname, &vport->fc_sparam.portName,
 380                         sizeof(struct lpfc_name)))
 381                 vport->vport_flag |= FAWWPN_PARAM_CHG;
 382
 383         if (vport->fc_portname.u.wwn[0] == 0 ||
 384             vport->phba->cfg_soft_wwpn ||
 385             (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR) ||
 386             vport->vport_flag & FAWWPN_SET) {
 387                 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 388                         sizeof(struct lpfc_name));
 389                 vport->vport_flag &= ~FAWWPN_SET;
 390                 if (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR)
 391                         vport->vport_flag |= FAWWPN_SET;
 392         }
 393         else
 394                 memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
 395                         sizeof(struct lpfc_name));
 396 }
 397
 398 /**
 399  * lpfc_config_port_post - Perform lpfc initialization after config port
 400  * @phba: pointer to lpfc hba data structure.
 401  *
 402  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
 403  * command call. It performs all internal resource and state setups on the
 404  * port: post IOCB buffers, enable appropriate host interrupt attentions,
 405  * ELS ring timers, etc.
 406  *
 407  * Return codes
 408  *   0 - success.
 409  *   Any other value - error.
 410  **/
 411 int
 412 lpfc_config_port_post(struct lpfc_hba *phba)
 413 {
 414         struct lpfc_vport *vport = phba->pport;
 415         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 416         LPFC_MBOXQ_t *pmb;
 417         MAILBOX_t *mb;
 418         struct lpfc_dmabuf *mp;
 419         struct lpfc_sli *psli = &phba->sli;
 420         uint32_t status, timeout;
 421         int i, j;
 422         int rc;
 423
 424         spin_lock_irq(&phba->hbalock);
 425         /*
 426          * If the Config port completed correctly the HBA is not
 427          * over heated any more.
 428          */
 429         if (phba->over_temp_state == HBA_OVER_TEMP)
 430                 phba->over_temp_state = HBA_NORMAL_TEMP;
 431         spin_unlock_irq(&phba->hbalock);
 432
 433         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 434         if (!pmb) {
 435                 phba->link_state = LPFC_HBA_ERROR;
 436                 return -ENOMEM;
 437         }
 438         mb = &pmb->u.mb;
 439
 440         /* Get login parameters for NID.  */
 441         rc = lpfc_read_sparam(phba, pmb, 0);
 442         if (rc) {
 443                 mempool_free(pmb, phba->mbox_mem_pool);
 444                 return -ENOMEM;
 445         }
 446
 447         pmb->vport = vport;
 448         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 449                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 450                                 "0448 Adapter failed init, mbxCmd x%x "
 451                                 "READ_SPARM mbxStatus x%x\n",
 452                                 mb->mbxCommand, mb->mbxStatus);
 453                 phba->link_state = LPFC_HBA_ERROR;
 454                 mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
 455                 mempool_free(pmb, phba->mbox_mem_pool);
 456                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 457                 kfree(mp);
 458                 return -EIO;
 459         }
 460
 461         mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
 462
 463         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 464         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 465         kfree(mp);
 466         pmb->ctx_buf = NULL;
 467         lpfc_update_vport_wwn(vport);
 468
 469         /* Update the fc_host data structures with new wwn. */
 470         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
 471         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
 472         fc_host_max_npiv_vports(shost) = phba->max_vpi;
 473
 474         /* If no serial number in VPD data, use low 6 bytes of WWNN */
 475         /* This should be consolidated into parse_vpd ? - mr */
 476         if (phba->SerialNumber[0] == 0) {
 477                 uint8_t *outptr;
 478
 479                 outptr = &vport->fc_nodename.u.s.IEEE[0];
 480                 for (i = 0; i < 12; i++) {
 481                         status = *outptr++;
 482                         j = ((status & 0xf0) >> 4);
 483                         if (j <= 9)
 484                                 phba->SerialNumber[i] =
 485                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 486                         else
 487                                 phba->SerialNumber[i] =
 488                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 489                         i++;
 490                         j = (status & 0xf);
 491                         if (j <= 9)
 492                                 phba->SerialNumber[i] =
 493                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 494                         else
 495                                 phba->SerialNumber[i] =
 496                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 497                 }
 498         }
 499
 500         lpfc_read_config(phba, pmb);
 501         pmb->vport = vport;
 502         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 503                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 504                                 "0453 Adapter failed to init, mbxCmd x%x "
 505                                 "READ_CONFIG, mbxStatus x%x\n",
 506                                 mb->mbxCommand, mb->mbxStatus);
 507                 phba->link_state = LPFC_HBA_ERROR;
 508                 mempool_free( pmb, phba->mbox_mem_pool);
 509                 return -EIO;
 510         }
 511
 512         /* Check if the port is disabled */
 513         lpfc_sli_read_link_ste(phba);
 514
 515         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
 516         if (phba->cfg_hba_queue_depth > mb->un.varRdConfig.max_xri) {
 517                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
 518                                 "3359 HBA queue depth changed from %d to %d\n",
 519                                 phba->cfg_hba_queue_depth,
 520                                 mb->un.varRdConfig.max_xri);
 521                 phba->cfg_hba_queue_depth = mb->un.varRdConfig.max_xri;
 522         }
 523
 524         phba->lmt = mb->un.varRdConfig.lmt;
 525
 526         /* Get the default values for Model Name and Description */
 527         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 528
 529         phba->link_state = LPFC_LINK_DOWN;
 530
 531         /* Only process IOCBs on ELS ring till hba_state is READY */
 532         if (psli->sli3_ring[LPFC_EXTRA_RING].sli.sli3.cmdringaddr)
 533                 psli->sli3_ring[LPFC_EXTRA_RING].flag |= LPFC_STOP_IOCB_EVENT;
 534         if (psli->sli3_ring[LPFC_FCP_RING].sli.sli3.cmdringaddr)
 535                 psli->sli3_ring[LPFC_FCP_RING].flag |= LPFC_STOP_IOCB_EVENT;
 536
 537         /* Post receive buffers for desired rings */
 538         if (phba->sli_rev != 3)
 539                 lpfc_post_rcv_buf(phba);
 540
 541         /*
 542          * Configure HBA MSI-X attention conditions to messages if MSI-X mode
 543          */
 544         if (phba->intr_type == MSIX) {
 545                 rc = lpfc_config_msi(phba, pmb);
 546                 if (rc) {
 547                         mempool_free(pmb, phba->mbox_mem_pool);
 548                         return -EIO;
 549                 }
 550                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 551                 if (rc != MBX_SUCCESS) {
 552                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 553                                         "0352 Config MSI mailbox command "
 554                                         "failed, mbxCmd x%x, mbxStatus x%x\n",
 555                                         pmb->u.mb.mbxCommand,
 556                                         pmb->u.mb.mbxStatus);
 557                         mempool_free(pmb, phba->mbox_mem_pool);
 558                         return -EIO;
 559                 }
 560         }
 561
 562         spin_lock_irq(&phba->hbalock);
 563         /* Initialize ERATT handling flag */
 564         phba->hba_flag &= ~HBA_ERATT_HANDLED;
 565
 566         /* Enable appropriate host interrupts */
 567         if (lpfc_readl(phba->HCregaddr, &status)) {
 568                 spin_unlock_irq(&phba->hbalock);
 569                 return -EIO;
 570         }
 571         status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
 572         if (psli->num_rings > 0)
 573                 status |= HC_R0INT_ENA;
 574         if (psli->num_rings > 1)
 575                 status |= HC_R1INT_ENA;
 576         if (psli->num_rings > 2)
 577                 status |= HC_R2INT_ENA;
 578         if (psli->num_rings > 3)
 579                 status |= HC_R3INT_ENA;
 580
 581         if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
 582             (phba->cfg_poll & DISABLE_FCP_RING_INT))
 583                 status &= ~(HC_R0INT_ENA);
 584
 585         writel(status, phba->HCregaddr);
 586         readl(phba->HCregaddr); /* flush */
 587         spin_unlock_irq(&phba->hbalock);
 588
 589         /* Set up ring-0 (ELS) timer */
 590         timeout = phba->fc_ratov * 2;
 591         mod_timer(&vport->els_tmofunc,
 592                   jiffies + msecs_to_jiffies(1000 * timeout));
 593         /* Set up heart beat (HB) timer */
 594         mod_timer(&phba->hb_tmofunc,
 595                   jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
 596         phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
 597         phba->last_completion_time = jiffies;
 598         /* Set up error attention (ERATT) polling timer */
 599         mod_timer(&phba->eratt_poll,
 600                   jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
 601
 602         if (phba->hba_flag & LINK_DISABLED) {
 603                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 604                                 "2598 Adapter Link is disabled.\n");
 605                 lpfc_down_link(phba, pmb);
 606                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 607                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 608                 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 609                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 610                                         "2599 Adapter failed to issue DOWN_LINK"
 611                                         " mbox command rc 0x%x\n", rc);
 612
 613                         mempool_free(pmb, phba->mbox_mem_pool);
 614                         return -EIO;
 615                 }
 616         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
 617                 mempool_free(pmb, phba->mbox_mem_pool);
 618                 rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
 619                 if (rc)
 620                         return rc;
 621         }
 622         /* MBOX buffer will be freed in mbox compl */
 623         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 624         if (!pmb) {
 625                 phba->link_state = LPFC_HBA_ERROR;
 626                 return -ENOMEM;
 627         }
 628
 629         lpfc_config_async(phba, pmb, LPFC_ELS_RING);
 630         pmb->mbox_cmpl = lpfc_config_async_cmpl;
 631         pmb->vport = phba->pport;
 632         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 633
 634         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 635                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 636                                 "0456 Adapter failed to issue "
 637                                 "ASYNCEVT_ENABLE mbox status x%x\n",
 638                                 rc);
 639                 mempool_free(pmb, phba->mbox_mem_pool);
 640         }
 641
 642         /* Get Option rom version */
 643         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 644         if (!pmb) {
 645                 phba->link_state = LPFC_HBA_ERROR;
 646                 return -ENOMEM;
 647         }
 648
 649         lpfc_dump_wakeup_param(phba, pmb);
 650         pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
 651         pmb->vport = phba->pport;
 652         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 653
 654         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 655                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 656                                 "0435 Adapter failed "
 657                                 "to get Option ROM version status x%x\n", rc);
 658                 mempool_free(pmb, phba->mbox_mem_pool);
 659         }
 660
 661         return 0;
 662 }
 663
 664 /**
 665  * lpfc_hba_init_link - Initialize the FC link
 666  * @phba: pointer to lpfc hba data structure.
 667  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 668  *
 669  * This routine will issue the INIT_LINK mailbox command call.
 670  * It is available to other drivers through the lpfc_hba data
 671  * structure for use as a delayed link up mechanism with the
 672  * module parameter lpfc_suppress_link_up.
 673  *
 674  * Return code
 675  *              0 - success
 676  *              Any other value - error
 677  **/
 678 static int
 679 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 680 {
 681         return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
 682 }
 683
 684 /**
 685  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
 686  * @phba: pointer to lpfc hba data structure.
 687  * @fc_topology: desired fc topology.
 688  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 689  *
 690  * This routine will issue the INIT_LINK mailbox command call.
 691  * It is available to other drivers through the lpfc_hba data
 692  * structure for use as a delayed link up mechanism with the
 693  * module parameter lpfc_suppress_link_up.
 694  *
 695  * Return code
 696  *              0 - success
 697  *              Any other value - error
 698  **/
 699 int
 700 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
 701                                uint32_t flag)
 702 {
 703         struct lpfc_vport *vport = phba->pport;
 704         LPFC_MBOXQ_t *pmb;
 705         MAILBOX_t *mb;
 706         int rc;
 707
 708         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 709         if (!pmb) {
 710                 phba->link_state = LPFC_HBA_ERROR;
 711                 return -ENOMEM;
 712         }
 713         mb = &pmb->u.mb;
 714         pmb->vport = vport;
 715
 716         if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
 717             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
 718              !(phba->lmt & LMT_1Gb)) ||
 719             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
 720              !(phba->lmt & LMT_2Gb)) ||
 721             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
 722              !(phba->lmt & LMT_4Gb)) ||
 723             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
 724              !(phba->lmt & LMT_8Gb)) ||
 725             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
 726              !(phba->lmt & LMT_10Gb)) ||
 727             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
 728              !(phba->lmt & LMT_16Gb)) ||
 729             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_32G) &&
 730              !(phba->lmt & LMT_32Gb)) ||
 731             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_64G) &&
 732              !(phba->lmt & LMT_64Gb))) {
 733                 /* Reset link speed to auto */
 734                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 735                                 "1302 Invalid speed for this board:%d "
 736                                 "Reset link speed to auto.\n",
 737                                 phba->cfg_link_speed);
 738                         phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
 739         }
 740         lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
 741         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 742         if (phba->sli_rev < LPFC_SLI_REV4)
 743                 lpfc_set_loopback_flag(phba);
 744         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 745         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 746                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 747                                 "0498 Adapter failed to init, mbxCmd x%x "
 748                                 "INIT_LINK, mbxStatus x%x\n",
 749                                 mb->mbxCommand, mb->mbxStatus);
 750                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 751                         /* Clear all interrupt enable conditions */
 752                         writel(0, phba->HCregaddr);
 753                         readl(phba->HCregaddr); /* flush */
 754                         /* Clear all pending interrupts */
 755                         writel(0xffffffff, phba->HAregaddr);
 756                         readl(phba->HAregaddr); /* flush */
 757                 }
 758                 phba->link_state = LPFC_HBA_ERROR;
 759                 if (rc != MBX_BUSY || flag == MBX_POLL)
 760                         mempool_free(pmb, phba->mbox_mem_pool);
 761                 return -EIO;
 762         }
 763         phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
 764         if (flag == MBX_POLL)
 765                 mempool_free(pmb, phba->mbox_mem_pool);
 766
 767         return 0;
 768 }
 769
 770 /**
 771  * lpfc_hba_down_link - this routine downs the FC link
 772  * @phba: pointer to lpfc hba data structure.
 773  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 774  *
 775  * This routine will issue the DOWN_LINK mailbox command call.
 776  * It is available to other drivers through the lpfc_hba data
 777  * structure for use to stop the link.
 778  *
 779  * Return code
 780  *              0 - success
 781  *              Any other value - error
 782  **/
 783 static int
 784 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 785 {
 786         LPFC_MBOXQ_t *pmb;
 787         int rc;
 788
 789         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 790         if (!pmb) {
 791                 phba->link_state = LPFC_HBA_ERROR;
 792                 return -ENOMEM;
 793         }
 794
 795         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 796                         "0491 Adapter Link is disabled.\n");
 797         lpfc_down_link(phba, pmb);
 798         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 799         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 800         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 801                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
 802                                 "2522 Adapter failed to issue DOWN_LINK"
 803                                 " mbox command rc 0x%x\n", rc);
 804
 805                 mempool_free(pmb, phba->mbox_mem_pool);
 806                 return -EIO;
 807         }
 808         if (flag == MBX_POLL)
 809                 mempool_free(pmb, phba->mbox_mem_pool);
 810
 811         return 0;
 812 }
 813
 814 /**
 815  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
 816  * @phba: pointer to lpfc HBA data structure.
 817  *
 818  * This routine will do LPFC uninitialization before the HBA is reset when
 819  * bringing down the SLI Layer.
 820  *
 821  * Return codes
 822  *   0 - success.
 823  *   Any other value - error.
 824  **/
 825 int
 826 lpfc_hba_down_prep(struct lpfc_hba *phba)
 827 {
 828         struct lpfc_vport **vports;
 829         int i;
 830
 831         if (phba->sli_rev <= LPFC_SLI_REV3) {
 832                 /* Disable interrupts */
 833                 writel(0, phba->HCregaddr);
 834                 readl(phba->HCregaddr); /* flush */
 835         }
 836
 837         if (phba->pport->load_flag & FC_UNLOADING)
 838                 lpfc_cleanup_discovery_resources(phba->pport);
 839         else {
 840                 vports = lpfc_create_vport_work_array(phba);
 841                 if (vports != NULL)
 842                         for (i = 0; i <= phba->max_vports &&
 843                                 vports[i] != NULL; i++)
 844                                 lpfc_cleanup_discovery_resources(vports[i]);
 845                 lpfc_destroy_vport_work_array(phba, vports);
 846         }
 847         return 0;
 848 }
 849
 850 /**
 851  * lpfc_sli4_free_sp_events - Cleanup sp_queue_events to free
 852  * rspiocb which got deferred
 853  *
 854  * @phba: pointer to lpfc HBA data structure.
 855  *
 856  * This routine will cleanup completed slow path events after HBA is reset
 857  * when bringing down the SLI Layer.
 858  *
 859  *
 860  * Return codes
 861  *   void.
 862  **/
 863 static void
 864 lpfc_sli4_free_sp_events(struct lpfc_hba *phba)
 865 {
 866         struct lpfc_iocbq *rspiocbq;
 867         struct hbq_dmabuf *dmabuf;
 868         struct lpfc_cq_event *cq_event;
 869
 870         spin_lock_irq(&phba->hbalock);
 871         phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
 872         spin_unlock_irq(&phba->hbalock);
 873
 874         while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
 875                 /* Get the response iocb from the head of work queue */
 876                 spin_lock_irq(&phba->hbalock);
 877                 list_remove_head(&phba->sli4_hba.sp_queue_event,
 878                                  cq_event, struct lpfc_cq_event, list);
 879                 spin_unlock_irq(&phba->hbalock);
 880
 881                 switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
 882                 case CQE_CODE_COMPL_WQE:
 883                         rspiocbq = container_of(cq_event, struct lpfc_iocbq,
 884                                                  cq_event);
 885                         lpfc_sli_release_iocbq(phba, rspiocbq);
 886                         break;
 887                 case CQE_CODE_RECEIVE:
 888                 case CQE_CODE_RECEIVE_V1:
 889                         dmabuf = container_of(cq_event, struct hbq_dmabuf,
 890                                               cq_event);
 891                         lpfc_in_buf_free(phba, &dmabuf->dbuf);
 892                 }
 893         }
 894 }
 895
 896 /**
 897  * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset
 898  * @phba: pointer to lpfc HBA data structure.
 899  *
 900  * This routine will cleanup posted ELS buffers after the HBA is reset
 901  * when bringing down the SLI Layer.
 902  *
 903  *
 904  * Return codes
 905  *   void.
 906  **/
 907 static void
 908 lpfc_hba_free_post_buf(struct lpfc_hba *phba)
 909 {
 910         struct lpfc_sli *psli = &phba->sli;
 911         struct lpfc_sli_ring *pring;
 912         struct lpfc_dmabuf *mp, *next_mp;
 913         LIST_HEAD(buflist);
 914         int count;
 915
 916         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
 917                 lpfc_sli_hbqbuf_free_all(phba);
 918         else {
 919                 /* Cleanup preposted buffers on the ELS ring */
 920                 pring = &psli->sli3_ring[LPFC_ELS_RING];
 921                 spin_lock_irq(&phba->hbalock);
 922                 list_splice_init(&pring->postbufq, &buflist);
 923                 spin_unlock_irq(&phba->hbalock);
 924
 925                 count = 0;
 926                 list_for_each_entry_safe(mp, next_mp, &buflist, list) {
 927                         list_del(&mp->list);
 928                         count++;
 929                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 930                         kfree(mp);
 931                 }
 932
 933                 spin_lock_irq(&phba->hbalock);
 934                 pring->postbufq_cnt -= count;
 935                 spin_unlock_irq(&phba->hbalock);
 936         }
 937 }
 938
 939 /**
 940  * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset
 941  * @phba: pointer to lpfc HBA data structure.
 942  *
 943  * This routine will cleanup the txcmplq after the HBA is reset when bringing
 944  * down the SLI Layer.
 945  *
 946  * Return codes
 947  *   void
 948  **/
 949 static void
 950 lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)
 951 {
 952         struct lpfc_sli *psli = &phba->sli;
 953         struct lpfc_queue *qp = NULL;
 954         struct lpfc_sli_ring *pring;
 955         LIST_HEAD(completions);
 956         int i;
 957         struct lpfc_iocbq *piocb, *next_iocb;
 958
 959         if (phba->sli_rev != LPFC_SLI_REV4) {
 960                 for (i = 0; i < psli->num_rings; i++) {
 961                         pring = &psli->sli3_ring[i];
 962                         spin_lock_irq(&phba->hbalock);
 963                         /* At this point in time the HBA is either reset or DOA
 964                          * Nothing should be on txcmplq as it will
 965                          * NEVER complete.
 966                          */
 967                         list_splice_init(&pring->txcmplq, &completions);
 968                         pring->txcmplq_cnt = 0;
 969                         spin_unlock_irq(&phba->hbalock);
 970
 971                         lpfc_sli_abort_iocb_ring(phba, pring);
 972                 }
 973                 /* Cancel all the IOCBs from the completions list */
 974                 lpfc_sli_cancel_iocbs(phba, &completions,
 975                                       IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 976                 return;
 977         }
 978         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
 979                 pring = qp->pring;
 980                 if (!pring)
 981                         continue;
 982                 spin_lock_irq(&pring->ring_lock);
 983                 list_for_each_entry_safe(piocb, next_iocb,
 984                                          &pring->txcmplq, list)
 985                         piocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
 986                 list_splice_init(&pring->txcmplq, &completions);
 987                 pring->txcmplq_cnt = 0;
 988                 spin_unlock_irq(&pring->ring_lock);
 989                 lpfc_sli_abort_iocb_ring(phba, pring);
 990         }
 991         /* Cancel all the IOCBs from the completions list */
 992         lpfc_sli_cancel_iocbs(phba, &completions,
 993                               IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
 994 }
 995
 996 /**
 997  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
 998  * @phba: pointer to lpfc HBA data structure.
 999  *
1000  * This routine will do uninitialization after the HBA is reset when bring
1001  * down the SLI Layer.
1002  *
1003  * Return codes
1004  *   0 - success.
1005  *   Any other value - error.
1006  **/
1007 static int
1008 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
1009 {
1010         lpfc_hba_free_post_buf(phba);
1011         lpfc_hba_clean_txcmplq(phba);
1012         return 0;
1013 }
1014
1015 /**
1016  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
1017  * @phba: pointer to lpfc HBA data structure.
1018  *
1019  * This routine will do uninitialization after the HBA is reset when bring
1020  * down the SLI Layer.
1021  *
1022  * Return codes
1023  *   0 - success.
1024  *   Any other value - error.
1025  **/
1026 static int
1027 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
1028 {
1029         struct lpfc_io_buf *psb, *psb_next;
1030         struct lpfc_async_xchg_ctx *ctxp, *ctxp_next;
1031         struct lpfc_sli4_hdw_queue *qp;
1032         LIST_HEAD(aborts);
1033         LIST_HEAD(nvme_aborts);
1034         LIST_HEAD(nvmet_aborts);
1035         struct lpfc_sglq *sglq_entry = NULL;
1036         int cnt, idx;
1037
1038
1039         lpfc_sli_hbqbuf_free_all(phba);
1040         lpfc_hba_clean_txcmplq(phba);
1041
1042         /* At this point in time the HBA is either reset or DOA. Either
1043          * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
1044          * on the lpfc_els_sgl_list so that it can either be freed if the
1045          * driver is unloading or reposted if the driver is restarting
1046          * the port.
1047          */
1048
1049         /* sgl_list_lock required because worker thread uses this
1050          * list.
1051          */
1052         spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
1053         list_for_each_entry(sglq_entry,
1054                 &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
1055                 sglq_entry->state = SGL_FREED;
1056
1057         list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
1058                         &phba->sli4_hba.lpfc_els_sgl_list);
1059
1060
1061         spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
1062
1063         /* abts_xxxx_buf_list_lock required because worker thread uses this
1064          * list.
1065          */
1066         spin_lock_irq(&phba->hbalock);
1067         cnt = 0;
1068         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
1069                 qp = &phba->sli4_hba.hdwq[idx];
1070
1071                 spin_lock(&qp->abts_io_buf_list_lock);
1072                 list_splice_init(&qp->lpfc_abts_io_buf_list,
1073                                  &aborts);
1074
1075                 list_for_each_entry_safe(psb, psb_next, &aborts, list) {
1076                         psb->pCmd = NULL;
1077                         psb->status = IOSTAT_SUCCESS;
1078                         cnt++;
1079                 }
1080                 spin_lock(&qp->io_buf_list_put_lock);
1081                 list_splice_init(&aborts, &qp->lpfc_io_buf_list_put);
1082                 qp->put_io_bufs += qp->abts_scsi_io_bufs;
1083                 qp->put_io_bufs += qp->abts_nvme_io_bufs;
1084                 qp->abts_scsi_io_bufs = 0;
1085                 qp->abts_nvme_io_bufs = 0;
1086                 spin_unlock(&qp->io_buf_list_put_lock);
1087                 spin_unlock(&qp->abts_io_buf_list_lock);
1088         }
1089         spin_unlock_irq(&phba->hbalock);
1090
1091         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
1092                 spin_lock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1093                 list_splice_init(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1094                                  &nvmet_aborts);
1095                 spin_unlock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1096                 list_for_each_entry_safe(ctxp, ctxp_next, &nvmet_aborts, list) {
1097                         ctxp->flag &= ~(LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP);
1098                         lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
1099                 }
1100         }
1101
1102         lpfc_sli4_free_sp_events(phba);
1103         return cnt;
1104 }
1105
1106 /**
1107  * lpfc_hba_down_post - Wrapper func for hba down post routine
1108  * @phba: pointer to lpfc HBA data structure.
1109  *
1110  * This routine wraps the actual SLI3 or SLI4 routine for performing
1111  * uninitialization after the HBA is reset when bring down the SLI Layer.
1112  *
1113  * Return codes
1114  *   0 - success.
1115  *   Any other value - error.
1116  **/
1117 int
1118 lpfc_hba_down_post(struct lpfc_hba *phba)
1119 {
1120         return (*phba->lpfc_hba_down_post)(phba);
1121 }
1122
1123 /**
1124  * lpfc_hb_timeout - The HBA-timer timeout handler
1125  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1126  *
1127  * This is the HBA-timer timeout handler registered to the lpfc driver. When
1128  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
1129  * work-port-events bitmap and the worker thread is notified. This timeout
1130  * event will be used by the worker thread to invoke the actual timeout
1131  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
1132  * be performed in the timeout handler and the HBA timeout event bit shall
1133  * be cleared by the worker thread after it has taken the event bitmap out.
1134  **/
1135 static void
1136 lpfc_hb_timeout(struct timer_list *t)
1137 {
1138         struct lpfc_hba *phba;
1139         uint32_t tmo_posted;
1140         unsigned long iflag;
1141
1142         phba = from_timer(phba, t, hb_tmofunc);
1143
1144         /* Check for heart beat timeout conditions */
1145         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1146         tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
1147         if (!tmo_posted)
1148                 phba->pport->work_port_events |= WORKER_HB_TMO;
1149         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1150
1151         /* Tell the worker thread there is work to do */
1152         if (!tmo_posted)
1153                 lpfc_worker_wake_up(phba);
1154         return;
1155 }
1156
1157 /**
1158  * lpfc_rrq_timeout - The RRQ-timer timeout handler
1159  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1160  *
1161  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
1162  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
1163  * work-port-events bitmap and the worker thread is notified. This timeout
1164  * event will be used by the worker thread to invoke the actual timeout
1165  * handler routine, lpfc_rrq_handler. Any periodical operations will
1166  * be performed in the timeout handler and the RRQ timeout event bit shall
1167  * be cleared by the worker thread after it has taken the event bitmap out.
1168  **/
1169 static void
1170 lpfc_rrq_timeout(struct timer_list *t)
1171 {
1172         struct lpfc_hba *phba;
1173         unsigned long iflag;
1174
1175         phba = from_timer(phba, t, rrq_tmr);
1176         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1177         if (!(phba->pport->load_flag & FC_UNLOADING))
1178                 phba->hba_flag |= HBA_RRQ_ACTIVE;
1179         else
1180                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
1181         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1182
1183         if (!(phba->pport->load_flag & FC_UNLOADING))
1184                 lpfc_worker_wake_up(phba);
1185 }
1186
1187 /**
1188  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
1189  * @phba: pointer to lpfc hba data structure.
1190  * @pmboxq: pointer to the driver internal queue element for mailbox command.
1191  *
1192  * This is the callback function to the lpfc heart-beat mailbox command.
1193  * If configured, the lpfc driver issues the heart-beat mailbox command to
1194  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
1195  * heart-beat mailbox command is issued, the driver shall set up heart-beat
1196  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
1197  * heart-beat outstanding state. Once the mailbox command comes back and
1198  * no error conditions detected, the heart-beat mailbox command timer is
1199  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1200  * state is cleared for the next heart-beat. If the timer expired with the
1201  * heart-beat outstanding state set, the driver will put the HBA offline.
1202  **/
1203 static void
1204 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1205 {
1206         unsigned long drvr_flag;
1207
1208         spin_lock_irqsave(&phba->hbalock, drvr_flag);
1209         phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
1210         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1211
1212         /* Check and reset heart-beat timer if necessary */
1213         mempool_free(pmboxq, phba->mbox_mem_pool);
1214         if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1215                 !(phba->link_state == LPFC_HBA_ERROR) &&
1216                 !(phba->pport->load_flag & FC_UNLOADING))
1217                 mod_timer(&phba->hb_tmofunc,
1218                           jiffies +
1219                           msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1220         return;
1221 }
1222
1223 /*
1224  * lpfc_idle_stat_delay_work - idle_stat tracking
1225  *
1226  * This routine tracks per-cq idle_stat and determines polling decisions.
1227  *
1228  * Return codes:
1229  *   None
1230  **/
1231 static void
1232 lpfc_idle_stat_delay_work(struct work_struct *work)
1233 {
1234         struct lpfc_hba *phba = container_of(to_delayed_work(work),
1235                                              struct lpfc_hba,
1236                                              idle_stat_delay_work);
1237         struct lpfc_queue *cq;
1238         struct lpfc_sli4_hdw_queue *hdwq;
1239         struct lpfc_idle_stat *idle_stat;
1240         u32 i, idle_percent;
1241         u64 wall, wall_idle, diff_wall, diff_idle, busy_time;
1242
1243         if (phba->pport->load_flag & FC_UNLOADING)
1244                 return;
1245
1246         if (phba->link_state == LPFC_HBA_ERROR ||
1247             phba->pport->fc_flag & FC_OFFLINE_MODE ||
1248             phba->cmf_active_mode != LPFC_CFG_OFF)
1249                 goto requeue;
1250
1251         for_each_present_cpu(i) {
1252                 hdwq = &phba->sli4_hba.hdwq[phba->sli4_hba.cpu_map[i].hdwq];
1253                 cq = hdwq->io_cq;
1254
1255                 /* Skip if we've already handled this cq's primary CPU */
1256                 if (cq->chann != i)
1257                         continue;
1258
1259                 idle_stat = &phba->sli4_hba.idle_stat[i];
1260
1261                 /* get_cpu_idle_time returns values as running counters. Thus,
1262                  * to know the amount for this period, the prior counter values
1263                  * need to be subtracted from the current counter values.
1264                  * From there, the idle time stat can be calculated as a
1265                  * percentage of 100 - the sum of the other consumption times.
1266                  */
1267                 wall_idle = get_cpu_idle_time(i, &wall, 1);
1268                 diff_idle = wall_idle - idle_stat->prev_idle;
1269                 diff_wall = wall - idle_stat->prev_wall;
1270
1271                 if (diff_wall <= diff_idle)
1272                         busy_time = 0;
1273                 else
1274                         busy_time = diff_wall - diff_idle;
1275
1276                 idle_percent = div64_u64(100 * busy_time, diff_wall);
1277                 idle_percent = 100 - idle_percent;
1278
1279                 if (idle_percent < 15)
1280                         cq->poll_mode = LPFC_QUEUE_WORK;
1281                 else
1282                         cq->poll_mode = LPFC_IRQ_POLL;
1283
1284                 idle_stat->prev_idle = wall_idle;
1285                 idle_stat->prev_wall = wall;
1286         }
1287
1288 requeue:
1289         schedule_delayed_work(&phba->idle_stat_delay_work,
1290                               msecs_to_jiffies(LPFC_IDLE_STAT_DELAY));
1291 }
1292
1293 static void
1294 lpfc_hb_eq_delay_work(struct work_struct *work)
1295 {
1296         struct lpfc_hba *phba = container_of(to_delayed_work(work),
1297                                              struct lpfc_hba, eq_delay_work);
1298         struct lpfc_eq_intr_info *eqi, *eqi_new;
1299         struct lpfc_queue *eq, *eq_next;
1300         unsigned char *ena_delay = NULL;
1301         uint32_t usdelay;
1302         int i;
1303
1304         if (!phba->cfg_auto_imax || phba->pport->load_flag & FC_UNLOADING)
1305                 return;
1306
1307         if (phba->link_state == LPFC_HBA_ERROR ||
1308             phba->pport->fc_flag & FC_OFFLINE_MODE)
1309                 goto requeue;
1310
1311         ena_delay = kcalloc(phba->sli4_hba.num_possible_cpu, sizeof(*ena_delay),
1312                             GFP_KERNEL);
1313         if (!ena_delay)
1314                 goto requeue;
1315
1316         for (i = 0; i < phba->cfg_irq_chann; i++) {
1317                 /* Get the EQ corresponding to the IRQ vector */
1318                 eq = phba->sli4_hba.hba_eq_hdl[i].eq;
1319                 if (!eq)
1320                         continue;
1321                 if (eq->q_mode || eq->q_flag & HBA_EQ_DELAY_CHK) {
1322                         eq->q_flag &= ~HBA_EQ_DELAY_CHK;
1323                         ena_delay[eq->last_cpu] = 1;
1324                 }
1325         }
1326
1327         for_each_present_cpu(i) {
1328                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);
1329                 if (ena_delay[i]) {
1330                         usdelay = (eqi->icnt >> 10) * LPFC_EQ_DELAY_STEP;
1331                         if (usdelay > LPFC_MAX_AUTO_EQ_DELAY)
1332                                 usdelay = LPFC_MAX_AUTO_EQ_DELAY;
1333                 } else {
1334                         usdelay = 0;
1335                 }
1336
1337                 eqi->icnt = 0;
1338
1339                 list_for_each_entry_safe(eq, eq_next, &eqi->list, cpu_list) {
1340                         if (unlikely(eq->last_cpu != i)) {
1341                                 eqi_new = per_cpu_ptr(phba->sli4_hba.eq_info,
1342                                                       eq->last_cpu);
1343                                 list_move_tail(&eq->cpu_list, &eqi_new->list);
1344                                 continue;
1345                         }
1346                         if (usdelay != eq->q_mode)
1347                                 lpfc_modify_hba_eq_delay(phba, eq->hdwq, 1,
1348                                                          usdelay);
1349                 }
1350         }
1351
1352         kfree(ena_delay);
1353
1354 requeue:
1355         queue_delayed_work(phba->wq, &phba->eq_delay_work,
1356                            msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
1357 }
1358
1359 /**
1360  * lpfc_hb_mxp_handler - Multi-XRI pools handler to adjust XRI distribution
1361  * @phba: pointer to lpfc hba data structure.
1362  *
1363  * For each heartbeat, this routine does some heuristic methods to adjust
1364  * XRI distribution. The goal is to fully utilize free XRIs.
1365  **/
1366 static void lpfc_hb_mxp_handler(struct lpfc_hba *phba)
1367 {
1368         u32 i;
1369         u32 hwq_count;
1370
1371         hwq_count = phba->cfg_hdw_queue;
1372         for (i = 0; i < hwq_count; i++) {
1373                 /* Adjust XRIs in private pool */
1374                 lpfc_adjust_pvt_pool_count(phba, i);
1375
1376                 /* Adjust high watermark */
1377                 lpfc_adjust_high_watermark(phba, i);
1378
1379 #ifdef LPFC_MXP_STAT
1380                 /* Snapshot pbl, pvt and busy count */
1381                 lpfc_snapshot_mxp(phba, i);
1382 #endif
1383         }
1384 }
1385
1386 /**
1387  * lpfc_issue_hb_mbox - Issues heart-beat mailbox command
1388  * @phba: pointer to lpfc hba data structure.
1389  *
1390  * If a HB mbox is not already in progrees, this routine will allocate
1391  * a LPFC_MBOXQ_t, populate it with a MBX_HEARTBEAT (0x31) command,
1392  * and issue it. The HBA_HBEAT_INP flag means the command is in progress.
1393  **/
1394 int
1395 lpfc_issue_hb_mbox(struct lpfc_hba *phba)
1396 {
1397         LPFC_MBOXQ_t *pmboxq;
1398         int retval;
1399
1400         /* Is a Heartbeat mbox already in progress */
1401         if (phba->hba_flag & HBA_HBEAT_INP)
1402                 return 0;
1403
1404         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1405         if (!pmboxq)
1406                 return -ENOMEM;
1407
1408         lpfc_heart_beat(phba, pmboxq);
1409         pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1410         pmboxq->vport = phba->pport;
1411         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
1412
1413         if (retval != MBX_BUSY && retval != MBX_SUCCESS) {
1414                 mempool_free(pmboxq, phba->mbox_mem_pool);
1415                 return -ENXIO;
1416         }
1417         phba->hba_flag |= HBA_HBEAT_INP;
1418
1419         return 0;
1420 }
1421
1422 /**
1423  * lpfc_issue_hb_tmo - Signals heartbeat timer to issue mbox command
1424  * @phba: pointer to lpfc hba data structure.
1425  *
1426  * The heartbeat timer (every 5 sec) will fire. If the HBA_HBEAT_TMO
1427  * flag is set, it will force a MBX_HEARTBEAT mbox command, regardless
1428  * of the value of lpfc_enable_hba_heartbeat.
1429  * If lpfc_enable_hba_heartbeat is set, the timeout routine will always
1430  * try to issue a MBX_HEARTBEAT mbox command.
1431  **/
1432 void
1433 lpfc_issue_hb_tmo(struct lpfc_hba *phba)
1434 {
1435         if (phba->cfg_enable_hba_heartbeat)
1436                 return;
1437         phba->hba_flag |= HBA_HBEAT_TMO;
1438 }
1439
1440 /**
1441  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1442  * @phba: pointer to lpfc hba data structure.
1443  *
1444  * This is the actual HBA-timer timeout handler to be invoked by the worker
1445  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1446  * handler performs any periodic operations needed for the device. If such
1447  * periodic event has already been attended to either in the interrupt handler
1448  * or by processing slow-ring or fast-ring events within the HBA-timer
1449  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1450  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1451  * is configured and there is no heart-beat mailbox command outstanding, a
1452  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1453  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1454  * to offline.
1455  **/
1456 void
1457 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1458 {
1459         struct lpfc_vport **vports;
1460         struct lpfc_dmabuf *buf_ptr;
1461         int retval = 0;
1462         int i, tmo;
1463         struct lpfc_sli *psli = &phba->sli;
1464         LIST_HEAD(completions);
1465
1466         if (phba->cfg_xri_rebalancing) {
1467                 /* Multi-XRI pools handler */
1468                 lpfc_hb_mxp_handler(phba);
1469         }
1470
1471         vports = lpfc_create_vport_work_array(phba);
1472         if (vports != NULL)
1473                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1474                         lpfc_rcv_seq_check_edtov(vports[i]);
1475                         lpfc_fdmi_change_check(vports[i]);
1476                 }
1477         lpfc_destroy_vport_work_array(phba, vports);
1478
1479         if ((phba->link_state == LPFC_HBA_ERROR) ||
1480                 (phba->pport->load_flag & FC_UNLOADING) ||
1481                 (phba->pport->fc_flag & FC_OFFLINE_MODE))
1482                 return;
1483
1484         if (phba->elsbuf_cnt &&
1485                 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1486                 spin_lock_irq(&phba->hbalock);
1487                 list_splice_init(&phba->elsbuf, &completions);
1488                 phba->elsbuf_cnt = 0;
1489                 phba->elsbuf_prev_cnt = 0;
1490                 spin_unlock_irq(&phba->hbalock);
1491
1492                 while (!list_empty(&completions)) {
1493                         list_remove_head(&completions, buf_ptr,
1494                                 struct lpfc_dmabuf, list);
1495                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1496                         kfree(buf_ptr);
1497                 }
1498         }
1499         phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1500
1501         /* If there is no heart beat outstanding, issue a heartbeat command */
1502         if (phba->cfg_enable_hba_heartbeat) {
1503                 /* If IOs are completing, no need to issue a MBX_HEARTBEAT */
1504                 spin_lock_irq(&phba->pport->work_port_lock);
1505                 if (time_after(phba->last_completion_time +
1506                                 msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL),
1507                                 jiffies)) {
1508                         spin_unlock_irq(&phba->pport->work_port_lock);
1509                         if (phba->hba_flag & HBA_HBEAT_INP)
1510                                 tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1511                         else
1512                                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1513                         goto out;
1514                 }
1515                 spin_unlock_irq(&phba->pport->work_port_lock);
1516
1517                 /* Check if a MBX_HEARTBEAT is already in progress */
1518                 if (phba->hba_flag & HBA_HBEAT_INP) {
1519                         /*
1520                          * If heart beat timeout called with HBA_HBEAT_INP set
1521                          * we need to give the hb mailbox cmd a chance to
1522                          * complete or TMO.
1523                          */
1524                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1525                                 "0459 Adapter heartbeat still outstanding: "
1526                                 "last compl time was %d ms.\n",
1527                                 jiffies_to_msecs(jiffies
1528                                          - phba->last_completion_time));
1529                         tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1530                 } else {
1531                         if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1532                                 (list_empty(&psli->mboxq))) {
1533
1534                                 retval = lpfc_issue_hb_mbox(phba);
1535                                 if (retval) {
1536                                         tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1537                                         goto out;
1538                                 }
1539                                 phba->skipped_hb = 0;
1540                         } else if (time_before_eq(phba->last_completion_time,
1541                                         phba->skipped_hb)) {
1542                                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1543                                         "2857 Last completion time not "
1544                                         " updated in %d ms\n",
1545                                         jiffies_to_msecs(jiffies
1546                                                  - phba->last_completion_time));
1547                         } else
1548                                 phba->skipped_hb = jiffies;
1549
1550                         tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1551                         goto out;
1552                 }
1553         } else {
1554                 /* Check to see if we want to force a MBX_HEARTBEAT */
1555                 if (phba->hba_flag & HBA_HBEAT_TMO) {
1556                         retval = lpfc_issue_hb_mbox(phba);
1557                         if (retval)
1558                                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1559                         else
1560                                 tmo = (1000 * LPFC_HB_MBOX_TIMEOUT);
1561                         goto out;
1562                 }
1563                 tmo = (1000 * LPFC_HB_MBOX_INTERVAL);
1564         }
1565 out:
1566         mod_timer(&phba->hb_tmofunc, jiffies + msecs_to_jiffies(tmo));
1567 }
1568
1569 /**
1570  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1571  * @phba: pointer to lpfc hba data structure.
1572  *
1573  * This routine is called to bring the HBA offline when HBA hardware error
1574  * other than Port Error 6 has been detected.
1575  **/
1576 static void
1577 lpfc_offline_eratt(struct lpfc_hba *phba)
1578 {
1579         struct lpfc_sli   *psli = &phba->sli;
1580
1581         spin_lock_irq(&phba->hbalock);
1582         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1583         spin_unlock_irq(&phba->hbalock);
1584         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1585
1586         lpfc_offline(phba);
1587         lpfc_reset_barrier(phba);
1588         spin_lock_irq(&phba->hbalock);
1589         lpfc_sli_brdreset(phba);
1590         spin_unlock_irq(&phba->hbalock);
1591         lpfc_hba_down_post(phba);
1592         lpfc_sli_brdready(phba, HS_MBRDY);
1593         lpfc_unblock_mgmt_io(phba);
1594         phba->link_state = LPFC_HBA_ERROR;
1595         return;
1596 }
1597
1598 /**
1599  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1600  * @phba: pointer to lpfc hba data structure.
1601  *
1602  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1603  * other than Port Error 6 has been detected.
1604  **/
1605 void
1606 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1607 {
1608         spin_lock_irq(&phba->hbalock);
1609         phba->link_state = LPFC_HBA_ERROR;
1610         spin_unlock_irq(&phba->hbalock);
1611
1612         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1613         lpfc_sli_flush_io_rings(phba);
1614         lpfc_offline(phba);
1615         lpfc_hba_down_post(phba);
1616         lpfc_unblock_mgmt_io(phba);
1617 }
1618
1619 /**
1620  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1621  * @phba: pointer to lpfc hba data structure.
1622  *
1623  * This routine is invoked to handle the deferred HBA hardware error
1624  * conditions. This type of error is indicated by HBA by setting ER1
1625  * and another ER bit in the host status register. The driver will
1626  * wait until the ER1 bit clears before handling the error condition.
1627  **/
1628 static void
1629 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1630 {
1631         uint32_t old_host_status = phba->work_hs;
1632         struct lpfc_sli *psli = &phba->sli;
1633
1634         /* If the pci channel is offline, ignore possible errors,
1635          * since we cannot communicate with the pci card anyway.
1636          */
1637         if (pci_channel_offline(phba->pcidev)) {
1638                 spin_lock_irq(&phba->hbalock);
1639                 phba->hba_flag &= ~DEFER_ERATT;
1640                 spin_unlock_irq(&phba->hbalock);
1641                 return;
1642         }
1643
1644         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1645                         "0479 Deferred Adapter Hardware Error "
1646                         "Data: x%x x%x x%x\n",
1647                         phba->work_hs, phba->work_status[0],
1648                         phba->work_status[1]);
1649
1650         spin_lock_irq(&phba->hbalock);
1651         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1652         spin_unlock_irq(&phba->hbalock);
1653
1654
1655         /*
1656          * Firmware stops when it triggred erratt. That could cause the I/Os
1657          * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1658          * SCSI layer retry it after re-establishing link.
1659          */
1660         lpfc_sli_abort_fcp_rings(phba);
1661
1662         /*
1663          * There was a firmware error. Take the hba offline and then
1664          * attempt to restart it.
1665          */
1666         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
1667         lpfc_offline(phba);
1668
1669         /* Wait for the ER1 bit to clear.*/
1670         while (phba->work_hs & HS_FFER1) {
1671                 msleep(100);
1672                 if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1673                         phba->work_hs = UNPLUG_ERR ;
1674                         break;
1675                 }
1676                 /* If driver is unloading let the worker thread continue */
1677                 if (phba->pport->load_flag & FC_UNLOADING) {
1678                         phba->work_hs = 0;
1679                         break;
1680                 }
1681         }
1682
1683         /*
1684          * This is to ptrotect against a race condition in which
1685          * first write to the host attention register clear the
1686          * host status register.
1687          */
1688         if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1689                 phba->work_hs = old_host_status & ~HS_FFER1;
1690
1691         spin_lock_irq(&phba->hbalock);
1692         phba->hba_flag &= ~DEFER_ERATT;
1693         spin_unlock_irq(&phba->hbalock);
1694         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1695         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1696 }
1697
1698 static void
1699 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1700 {
1701         struct lpfc_board_event_header board_event;
1702         struct Scsi_Host *shost;
1703
1704         board_event.event_type = FC_REG_BOARD_EVENT;
1705         board_event.subcategory = LPFC_EVENT_PORTINTERR;
1706         shost = lpfc_shost_from_vport(phba->pport);
1707         fc_host_post_vendor_event(shost, fc_get_event_number(),
1708                                   sizeof(board_event),
1709                                   (char *) &board_event,
1710                                   LPFC_NL_VENDOR_ID);
1711 }
1712
1713 /**
1714  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1715  * @phba: pointer to lpfc hba data structure.
1716  *
1717  * This routine is invoked to handle the following HBA hardware error
1718  * conditions:
1719  * 1 - HBA error attention interrupt
1720  * 2 - DMA ring index out of range
1721  * 3 - Mailbox command came back as unknown
1722  **/
1723 static void
1724 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1725 {
1726         struct lpfc_vport *vport = phba->pport;
1727         struct lpfc_sli   *psli = &phba->sli;
1728         uint32_t event_data;
1729         unsigned long temperature;
1730         struct temp_event temp_event_data;
1731         struct Scsi_Host  *shost;
1732
1733         /* If the pci channel is offline, ignore possible errors,
1734          * since we cannot communicate with the pci card anyway.
1735          */
1736         if (pci_channel_offline(phba->pcidev)) {
1737                 spin_lock_irq(&phba->hbalock);
1738                 phba->hba_flag &= ~DEFER_ERATT;
1739                 spin_unlock_irq(&phba->hbalock);
1740                 return;
1741         }
1742
1743         /* If resets are disabled then leave the HBA alone and return */
1744         if (!phba->cfg_enable_hba_reset)
1745                 return;
1746
1747         /* Send an internal error event to mgmt application */
1748         lpfc_board_errevt_to_mgmt(phba);
1749
1750         if (phba->hba_flag & DEFER_ERATT)
1751                 lpfc_handle_deferred_eratt(phba);
1752
1753         if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1754                 if (phba->work_hs & HS_FFER6)
1755                         /* Re-establishing Link */
1756                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1757                                         "1301 Re-establishing Link "
1758                                         "Data: x%x x%x x%x\n",
1759                                         phba->work_hs, phba->work_status[0],
1760                                         phba->work_status[1]);
1761                 if (phba->work_hs & HS_FFER8)
1762                         /* Device Zeroization */
1763                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1764                                         "2861 Host Authentication device "
1765                                         "zeroization Data:x%x x%x x%x\n",
1766                                         phba->work_hs, phba->work_status[0],
1767                                         phba->work_status[1]);
1768
1769                 spin_lock_irq(&phba->hbalock);
1770                 psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1771                 spin_unlock_irq(&phba->hbalock);
1772
1773                 /*
1774                 * Firmware stops when it triggled erratt with HS_FFER6.
1775                 * That could cause the I/Os dropped by the firmware.
1776                 * Error iocb (I/O) on txcmplq and let the SCSI layer
1777                 * retry it after re-establishing link.
1778                 */
1779                 lpfc_sli_abort_fcp_rings(phba);
1780
1781                 /*
1782                  * There was a firmware error.  Take the hba offline and then
1783                  * attempt to restart it.
1784                  */
1785                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1786                 lpfc_offline(phba);
1787                 lpfc_sli_brdrestart(phba);
1788                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
1789                         lpfc_unblock_mgmt_io(phba);
1790                         return;
1791                 }
1792                 lpfc_unblock_mgmt_io(phba);
1793         } else if (phba->work_hs & HS_CRIT_TEMP) {
1794                 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1795                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1796                 temp_event_data.event_code = LPFC_CRIT_TEMP;
1797                 temp_event_data.data = (uint32_t)temperature;
1798
1799                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1800                                 "0406 Adapter maximum temperature exceeded "
1801                                 "(%ld), taking this port offline "
1802                                 "Data: x%x x%x x%x\n",
1803                                 temperature, phba->work_hs,
1804                                 phba->work_status[0], phba->work_status[1]);
1805
1806                 shost = lpfc_shost_from_vport(phba->pport);
1807                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1808                                           sizeof(temp_event_data),
1809                                           (char *) &temp_event_data,
1810                                           SCSI_NL_VID_TYPE_PCI
1811                                           | PCI_VENDOR_ID_EMULEX);
1812
1813                 spin_lock_irq(&phba->hbalock);
1814                 phba->over_temp_state = HBA_OVER_TEMP;
1815                 spin_unlock_irq(&phba->hbalock);
1816                 lpfc_offline_eratt(phba);
1817
1818         } else {
1819                 /* The if clause above forces this code path when the status
1820                  * failure is a value other than FFER6. Do not call the offline
1821                  * twice. This is the adapter hardware error path.
1822                  */
1823                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1824                                 "0457 Adapter Hardware Error "
1825                                 "Data: x%x x%x x%x\n",
1826                                 phba->work_hs,
1827                                 phba->work_status[0], phba->work_status[1]);
1828
1829                 event_data = FC_REG_DUMP_EVENT;
1830                 shost = lpfc_shost_from_vport(vport);
1831                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1832                                 sizeof(event_data), (char *) &event_data,
1833                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1834
1835                 lpfc_offline_eratt(phba);
1836         }
1837         return;
1838 }
1839
1840 /**
1841  * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
1842  * @phba: pointer to lpfc hba data structure.
1843  * @mbx_action: flag for mailbox shutdown action.
1844  * @en_rn_msg: send reset/port recovery message.
1845  * This routine is invoked to perform an SLI4 port PCI function reset in
1846  * response to port status register polling attention. It waits for port
1847  * status register (ERR, RDY, RN) bits before proceeding with function reset.
1848  * During this process, interrupt vectors are freed and later requested
1849  * for handling possible port resource change.
1850  **/
1851 static int
1852 lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
1853                             bool en_rn_msg)
1854 {
1855         int rc;
1856         uint32_t intr_mode;
1857         LPFC_MBOXQ_t *mboxq;
1858
1859         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
1860             LPFC_SLI_INTF_IF_TYPE_2) {
1861                 /*
1862                  * On error status condition, driver need to wait for port
1863                  * ready before performing reset.
1864                  */
1865                 rc = lpfc_sli4_pdev_status_reg_wait(phba);
1866                 if (rc)
1867                         return rc;
1868         }
1869
1870         /* need reset: attempt for port recovery */
1871         if (en_rn_msg)
1872                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1873                                 "2887 Reset Needed: Attempting Port "
1874                                 "Recovery...\n");
1875
1876         /* If we are no wait, the HBA has been reset and is not
1877          * functional, thus we should clear
1878          * (LPFC_SLI_ACTIVE | LPFC_SLI_MBOX_ACTIVE) flags.
1879          */
1880         if (mbx_action == LPFC_MBX_NO_WAIT) {
1881                 spin_lock_irq(&phba->hbalock);
1882                 phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
1883                 if (phba->sli.mbox_active) {
1884                         mboxq = phba->sli.mbox_active;
1885                         mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
1886                         __lpfc_mbox_cmpl_put(phba, mboxq);
1887                         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1888                         phba->sli.mbox_active = NULL;
1889                 }
1890                 spin_unlock_irq(&phba->hbalock);
1891         }
1892
1893         lpfc_offline_prep(phba, mbx_action);
1894         lpfc_sli_flush_io_rings(phba);
1895         lpfc_offline(phba);
1896         /* release interrupt for possible resource change */
1897         lpfc_sli4_disable_intr(phba);
1898         rc = lpfc_sli_brdrestart(phba);
1899         if (rc) {
1900                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1901                                 "6309 Failed to restart board\n");
1902                 return rc;
1903         }
1904         /* request and enable interrupt */
1905         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
1906         if (intr_mode == LPFC_INTR_ERROR) {
1907                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1908                                 "3175 Failed to enable interrupt\n");
1909                 return -EIO;
1910         }
1911         phba->intr_mode = intr_mode;
1912         rc = lpfc_online(phba);
1913         if (rc == 0)
1914                 lpfc_unblock_mgmt_io(phba);
1915
1916         return rc;
1917 }
1918
1919 /**
1920  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1921  * @phba: pointer to lpfc hba data structure.
1922  *
1923  * This routine is invoked to handle the SLI4 HBA hardware error attention
1924  * conditions.
1925  **/
1926 static void
1927 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1928 {
1929         struct lpfc_vport *vport = phba->pport;
1930         uint32_t event_data;
1931         struct Scsi_Host *shost;
1932         uint32_t if_type;
1933         struct lpfc_register portstat_reg = {0};
1934         uint32_t reg_err1, reg_err2;
1935         uint32_t uerrlo_reg, uemasklo_reg;
1936         uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;
1937         bool en_rn_msg = true;
1938         struct temp_event temp_event_data;
1939         struct lpfc_register portsmphr_reg;
1940         int rc, i;
1941
1942         /* If the pci channel is offline, ignore possible errors, since
1943          * we cannot communicate with the pci card anyway.
1944          */
1945         if (pci_channel_offline(phba->pcidev)) {
1946                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1947                                 "3166 pci channel is offline\n");
1948                 lpfc_sli4_offline_eratt(phba);
1949                 return;
1950         }
1951
1952         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
1953         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1954         switch (if_type) {
1955         case LPFC_SLI_INTF_IF_TYPE_0:
1956                 pci_rd_rc1 = lpfc_readl(
1957                                 phba->sli4_hba.u.if_type0.UERRLOregaddr,
1958                                 &uerrlo_reg);
1959                 pci_rd_rc2 = lpfc_readl(
1960                                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
1961                                 &uemasklo_reg);
1962                 /* consider PCI bus read error as pci_channel_offline */
1963                 if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
1964                         return;
1965                 if (!(phba->hba_flag & HBA_RECOVERABLE_UE)) {
1966                         lpfc_sli4_offline_eratt(phba);
1967                         return;
1968                 }
1969                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1970                                 "7623 Checking UE recoverable");
1971
1972                 for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {
1973                         if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1974                                        &portsmphr_reg.word0))
1975                                 continue;
1976
1977                         smphr_port_status = bf_get(lpfc_port_smphr_port_status,
1978                                                    &portsmphr_reg);
1979                         if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1980                             LPFC_PORT_SEM_UE_RECOVERABLE)
1981                                 break;
1982                         /*Sleep for 1Sec, before checking SEMAPHORE */
1983                         msleep(1000);
1984                 }
1985
1986                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1987                                 "4827 smphr_port_status x%x : Waited %dSec",
1988                                 smphr_port_status, i);
1989
1990                 /* Recoverable UE, reset the HBA device */
1991                 if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1992                     LPFC_PORT_SEM_UE_RECOVERABLE) {
1993                         for (i = 0; i < 20; i++) {
1994                                 msleep(1000);
1995                                 if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1996                                     &portsmphr_reg.word0) &&
1997                                     (LPFC_POST_STAGE_PORT_READY ==
1998                                      bf_get(lpfc_port_smphr_port_status,
1999                                      &portsmphr_reg))) {
2000                                         rc = lpfc_sli4_port_sta_fn_reset(phba,
2001                                                 LPFC_MBX_NO_WAIT, en_rn_msg);
2002                                         if (rc == 0)
2003                                                 return;
2004                                         lpfc_printf_log(phba, KERN_ERR,
2005                                                 LOG_TRACE_EVENT,
2006                                                 "4215 Failed to recover UE");
2007                                         break;
2008                                 }
2009                         }
2010                 }
2011                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2012                                 "7624 Firmware not ready: Failing UE recovery,"
2013                                 " waited %dSec", i);
2014                 phba->link_state = LPFC_HBA_ERROR;
2015                 break;
2016
2017         case LPFC_SLI_INTF_IF_TYPE_2:
2018         case LPFC_SLI_INTF_IF_TYPE_6:
2019                 pci_rd_rc1 = lpfc_readl(
2020                                 phba->sli4_hba.u.if_type2.STATUSregaddr,
2021                                 &portstat_reg.word0);
2022                 /* consider PCI bus read error as pci_channel_offline */
2023                 if (pci_rd_rc1 == -EIO) {
2024                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2025                                 "3151 PCI bus read access failure: x%x\n",
2026                                 readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
2027                         lpfc_sli4_offline_eratt(phba);
2028                         return;
2029                 }
2030                 reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
2031                 reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
2032                 if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
2033                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2034                                         "2889 Port Overtemperature event, "
2035                                         "taking port offline Data: x%x x%x\n",
2036                                         reg_err1, reg_err2);
2037
2038                         phba->sfp_alarm |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
2039                         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
2040                         temp_event_data.event_code = LPFC_CRIT_TEMP;
2041                         temp_event_data.data = 0xFFFFFFFF;
2042
2043                         shost = lpfc_shost_from_vport(phba->pport);
2044                         fc_host_post_vendor_event(shost, fc_get_event_number(),
2045                                                   sizeof(temp_event_data),
2046                                                   (char *)&temp_event_data,
2047                                                   SCSI_NL_VID_TYPE_PCI
2048                                                   | PCI_VENDOR_ID_EMULEX);
2049
2050                         spin_lock_irq(&phba->hbalock);
2051                         phba->over_temp_state = HBA_OVER_TEMP;
2052                         spin_unlock_irq(&phba->hbalock);
2053                         lpfc_sli4_offline_eratt(phba);
2054                         return;
2055                 }
2056                 if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2057                     reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) {
2058                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2059                                         "3143 Port Down: Firmware Update "
2060                                         "Detected\n");
2061                         en_rn_msg = false;
2062                 } else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2063                          reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2064                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2065                                         "3144 Port Down: Debug Dump\n");
2066                 else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2067                          reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
2068                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2069                                         "3145 Port Down: Provisioning\n");
2070
2071                 /* If resets are disabled then leave the HBA alone and return */
2072                 if (!phba->cfg_enable_hba_reset)
2073                         return;
2074
2075                 /* Check port status register for function reset */
2076                 rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,
2077                                 en_rn_msg);
2078                 if (rc == 0) {
2079                         /* don't report event on forced debug dump */
2080                         if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2081                             reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2082                                 return;
2083                         else
2084                                 break;
2085                 }
2086                 /* fall through for not able to recover */
2087                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2088                                 "3152 Unrecoverable error\n");
2089                 phba->link_state = LPFC_HBA_ERROR;
2090                 break;
2091         case LPFC_SLI_INTF_IF_TYPE_1:
2092         default:
2093                 break;
2094         }
2095         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2096                         "3123 Report dump event to upper layer\n");
2097         /* Send an internal error event to mgmt application */
2098         lpfc_board_errevt_to_mgmt(phba);
2099
2100         event_data = FC_REG_DUMP_EVENT;
2101         shost = lpfc_shost_from_vport(vport);
2102         fc_host_post_vendor_event(shost, fc_get_event_number(),
2103                                   sizeof(event_data), (char *) &event_data,
2104                                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
2105 }
2106
2107 /**
2108  * lpfc_handle_eratt - Wrapper func for handling hba error attention
2109  * @phba: pointer to lpfc HBA data structure.
2110  *
2111  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
2112  * routine from the API jump table function pointer from the lpfc_hba struct.
2113  *
2114  * Return codes
2115  *   0 - success.
2116  *   Any other value - error.
2117  **/
2118 void
2119 lpfc_handle_eratt(struct lpfc_hba *phba)
2120 {
2121         (*phba->lpfc_handle_eratt)(phba);
2122 }
2123
2124 /**
2125  * lpfc_handle_latt - The HBA link event handler
2126  * @phba: pointer to lpfc hba data structure.
2127  *
2128  * This routine is invoked from the worker thread to handle a HBA host
2129  * attention link event. SLI3 only.
2130  **/
2131 void
2132 lpfc_handle_latt(struct lpfc_hba *phba)
2133 {
2134         struct lpfc_vport *vport = phba->pport;
2135         struct lpfc_sli   *psli = &phba->sli;
2136         LPFC_MBOXQ_t *pmb;
2137         volatile uint32_t control;
2138         struct lpfc_dmabuf *mp;
2139         int rc = 0;
2140
2141         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2142         if (!pmb) {
2143                 rc = 1;
2144                 goto lpfc_handle_latt_err_exit;
2145         }
2146
2147         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2148         if (!mp) {
2149                 rc = 2;
2150                 goto lpfc_handle_latt_free_pmb;
2151         }
2152
2153         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
2154         if (!mp->virt) {
2155                 rc = 3;
2156                 goto lpfc_handle_latt_free_mp;
2157         }
2158
2159         /* Cleanup any outstanding ELS commands */
2160         lpfc_els_flush_all_cmd(phba);
2161
2162         psli->slistat.link_event++;
2163         lpfc_read_topology(phba, pmb, mp);
2164         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
2165         pmb->vport = vport;
2166         /* Block ELS IOCBs until we have processed this mbox command */
2167         phba->sli.sli3_ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
2168         rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
2169         if (rc == MBX_NOT_FINISHED) {
2170                 rc = 4;
2171                 goto lpfc_handle_latt_free_mbuf;
2172         }
2173
2174         /* Clear Link Attention in HA REG */
2175         spin_lock_irq(&phba->hbalock);
2176         writel(HA_LATT, phba->HAregaddr);
2177         readl(phba->HAregaddr); /* flush */
2178         spin_unlock_irq(&phba->hbalock);
2179
2180         return;
2181
2182 lpfc_handle_latt_free_mbuf:
2183         phba->sli.sli3_ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2184         lpfc_mbuf_free(phba, mp->virt, mp->phys);
2185 lpfc_handle_latt_free_mp:
2186         kfree(mp);
2187 lpfc_handle_latt_free_pmb:
2188         mempool_free(pmb, phba->mbox_mem_pool);
2189 lpfc_handle_latt_err_exit:
2190         /* Enable Link attention interrupts */
2191         spin_lock_irq(&phba->hbalock);
2192         psli->sli_flag |= LPFC_PROCESS_LA;
2193         control = readl(phba->HCregaddr);
2194         control |= HC_LAINT_ENA;
2195         writel(control, phba->HCregaddr);
2196         readl(phba->HCregaddr); /* flush */
2197
2198         /* Clear Link Attention in HA REG */
2199         writel(HA_LATT, phba->HAregaddr);
2200         readl(phba->HAregaddr); /* flush */
2201         spin_unlock_irq(&phba->hbalock);
2202         lpfc_linkdown(phba);
2203         phba->link_state = LPFC_HBA_ERROR;
2204
2205         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2206                         "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
2207
2208         return;
2209 }
2210
2211 /**
2212  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
2213  * @phba: pointer to lpfc hba data structure.
2214  * @vpd: pointer to the vital product data.
2215  * @len: length of the vital product data in bytes.
2216  *
2217  * This routine parses the Vital Product Data (VPD). The VPD is treated as
2218  * an array of characters. In this routine, the ModelName, ProgramType, and
2219  * ModelDesc, etc. fields of the phba data structure will be populated.
2220  *
2221  * Return codes
2222  *   0 - pointer to the VPD passed in is NULL
2223  *   1 - success
2224  **/
2225 int
2226 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
2227 {
2228         uint8_t lenlo, lenhi;
2229         int Length;
2230         int i, j;
2231         int finished = 0;
2232         int index = 0;
2233
2234         if (!vpd)
2235                 return 0;
2236
2237         /* Vital Product */
2238         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2239                         "0455 Vital Product Data: x%x x%x x%x x%x\n",
2240                         (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
2241                         (uint32_t) vpd[3]);
2242         while (!finished && (index < (len - 4))) {
2243                 switch (vpd[index]) {
2244                 case 0x82:
2245                 case 0x91:
2246                         index += 1;
2247                         lenlo = vpd[index];
2248                         index += 1;
2249                         lenhi = vpd[index];
2250                         index += 1;
2251                         i = ((((unsigned short)lenhi) << 8) + lenlo);
2252                         index += i;
2253                         break;
2254                 case 0x90:
2255                         index += 1;
2256                         lenlo = vpd[index];
2257                         index += 1;
2258                         lenhi = vpd[index];
2259                         index += 1;
2260                         Length = ((((unsigned short)lenhi) << 8) + lenlo);
2261                         if (Length > len - index)
2262                                 Length = len - index;
2263                         while (Length > 0) {
2264                         /* Look for Serial Number */
2265                         if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
2266                                 index += 2;
2267                                 i = vpd[index];
2268                                 index += 1;
2269                                 j = 0;
2270                                 Length -= (3+i);
2271                                 while(i--) {
2272                                         phba->SerialNumber[j++] = vpd[index++];
2273                                         if (j == 31)
2274                                                 break;
2275                                 }
2276                                 phba->SerialNumber[j] = 0;
2277                                 continue;
2278                         }
2279                         else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
2280                                 phba->vpd_flag |= VPD_MODEL_DESC;
2281                                 index += 2;
2282                                 i = vpd[index];
2283                                 index += 1;
2284                                 j = 0;
2285                                 Length -= (3+i);
2286                                 while(i--) {
2287                                         phba->ModelDesc[j++] = vpd[index++];
2288                                         if (j == 255)
2289                                                 break;
2290                                 }
2291                                 phba->ModelDesc[j] = 0;
2292                                 continue;
2293                         }
2294                         else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
2295                                 phba->vpd_flag |= VPD_MODEL_NAME;
2296                                 index += 2;
2297                                 i = vpd[index];
2298                                 index += 1;
2299                                 j = 0;
2300                                 Length -= (3+i);
2301                                 while(i--) {
2302                                         phba->ModelName[j++] = vpd[index++];
2303                                         if (j == 79)
2304                                                 break;
2305                                 }
2306                                 phba->ModelName[j] = 0;
2307                                 continue;
2308                         }
2309                         else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
2310                                 phba->vpd_flag |= VPD_PROGRAM_TYPE;
2311                                 index += 2;
2312                                 i = vpd[index];
2313                                 index += 1;
2314                                 j = 0;
2315                                 Length -= (3+i);
2316                                 while(i--) {
2317                                         phba->ProgramType[j++] = vpd[index++];
2318                                         if (j == 255)
2319                                                 break;
2320                                 }
2321                                 phba->ProgramType[j] = 0;
2322                                 continue;
2323                         }
2324                         else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
2325                                 phba->vpd_flag |= VPD_PORT;
2326                                 index += 2;
2327                                 i = vpd[index];
2328                                 index += 1;
2329                                 j = 0;
2330                                 Length -= (3+i);
2331                                 while(i--) {
2332                                         if ((phba->sli_rev == LPFC_SLI_REV4) &&
2333                                             (phba->sli4_hba.pport_name_sta ==
2334                                              LPFC_SLI4_PPNAME_GET)) {
2335                                                 j++;
2336                                                 index++;
2337                                         } else
2338                                                 phba->Port[j++] = vpd[index++];
2339                                         if (j == 19)
2340                                                 break;
2341                                 }
2342                                 if ((phba->sli_rev != LPFC_SLI_REV4) ||
2343                                     (phba->sli4_hba.pport_name_sta ==
2344                                      LPFC_SLI4_PPNAME_NON))
2345                                         phba->Port[j] = 0;
2346                                 continue;
2347                         }
2348                         else {
2349                                 index += 2;
2350                                 i = vpd[index];
2351                                 index += 1;
2352                                 index += i;
2353                                 Length -= (3 + i);
2354                         }
2355                 }
2356                 finished = 0;
2357                 break;
2358                 case 0x78:
2359                         finished = 1;
2360                         break;
2361                 default:
2362                         index ++;
2363                         break;
2364                 }
2365         }
2366
2367         return(1);
2368 }
2369
2370 /**
2371  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
2372  * @phba: pointer to lpfc hba data structure.
2373  * @mdp: pointer to the data structure to hold the derived model name.
2374  * @descp: pointer to the data structure to hold the derived description.
2375  *
2376  * This routine retrieves HBA's description based on its registered PCI device
2377  * ID. The @descp passed into this function points to an array of 256 chars. It
2378  * shall be returned with the model name, maximum speed, and the host bus type.
2379  * The @mdp passed into this function points to an array of 80 chars. When the
2380  * function returns, the @mdp will be filled with the model name.
2381  **/
2382 static void
2383 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
2384 {
2385         lpfc_vpd_t *vp;
2386         uint16_t dev_id = phba->pcidev->device;
2387         int max_speed;
2388         int GE = 0;
2389         int oneConnect = 0; /* default is not a oneConnect */
2390         struct {
2391                 char *name;
2392                 char *bus;
2393                 char *function;
2394         } m = {"<Unknown>", "", ""};
2395
2396         if (mdp && mdp[0] != '\0'
2397                 && descp && descp[0] != '\0')
2398                 return;
2399
2400         if (phba->lmt & LMT_64Gb)
2401                 max_speed = 64;
2402         else if (phba->lmt & LMT_32Gb)
2403                 max_speed = 32;
2404         else if (phba->lmt & LMT_16Gb)
2405                 max_speed = 16;
2406         else if (phba->lmt & LMT_10Gb)
2407                 max_speed = 10;
2408         else if (phba->lmt & LMT_8Gb)
2409                 max_speed = 8;
2410         else if (phba->lmt & LMT_4Gb)
2411                 max_speed = 4;
2412         else if (phba->lmt & LMT_2Gb)
2413                 max_speed = 2;
2414         else if (phba->lmt & LMT_1Gb)
2415                 max_speed = 1;
2416         else
2417                 max_speed = 0;
2418
2419         vp = &phba->vpd;
2420
2421         switch (dev_id) {
2422         case PCI_DEVICE_ID_FIREFLY:
2423                 m = (typeof(m)){"LP6000", "PCI",
2424                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2425                 break;
2426         case PCI_DEVICE_ID_SUPERFLY:
2427                 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
2428                         m = (typeof(m)){"LP7000", "PCI", ""};
2429                 else
2430                         m = (typeof(m)){"LP7000E", "PCI", ""};
2431                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2432                 break;
2433         case PCI_DEVICE_ID_DRAGONFLY:
2434                 m = (typeof(m)){"LP8000", "PCI",
2435                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2436                 break;
2437         case PCI_DEVICE_ID_CENTAUR:
2438                 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
2439                         m = (typeof(m)){"LP9002", "PCI", ""};
2440                 else
2441                         m = (typeof(m)){"LP9000", "PCI", ""};
2442                 m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2443                 break;
2444         case PCI_DEVICE_ID_RFLY:
2445                 m = (typeof(m)){"LP952", "PCI",
2446                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2447                 break;
2448         case PCI_DEVICE_ID_PEGASUS:
2449                 m = (typeof(m)){"LP9802", "PCI-X",
2450                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2451                 break;
2452         case PCI_DEVICE_ID_THOR:
2453                 m = (typeof(m)){"LP10000", "PCI-X",
2454                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2455                 break;
2456         case PCI_DEVICE_ID_VIPER:
2457                 m = (typeof(m)){"LPX1000",  "PCI-X",
2458                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2459                 break;
2460         case PCI_DEVICE_ID_PFLY:
2461                 m = (typeof(m)){"LP982", "PCI-X",
2462                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2463                 break;
2464         case PCI_DEVICE_ID_TFLY:
2465                 m = (typeof(m)){"LP1050", "PCI-X",
2466                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2467                 break;
2468         case PCI_DEVICE_ID_HELIOS:
2469                 m = (typeof(m)){"LP11000", "PCI-X2",
2470                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2471                 break;
2472         case PCI_DEVICE_ID_HELIOS_SCSP:
2473                 m = (typeof(m)){"LP11000-SP", "PCI-X2",
2474                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2475                 break;
2476         case PCI_DEVICE_ID_HELIOS_DCSP:
2477                 m = (typeof(m)){"LP11002-SP",  "PCI-X2",
2478                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2479                 break;
2480         case PCI_DEVICE_ID_NEPTUNE:
2481                 m = (typeof(m)){"LPe1000", "PCIe",
2482                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2483                 break;
2484         case PCI_DEVICE_ID_NEPTUNE_SCSP:
2485                 m = (typeof(m)){"LPe1000-SP", "PCIe",
2486                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2487                 break;
2488         case PCI_DEVICE_ID_NEPTUNE_DCSP:
2489                 m = (typeof(m)){"LPe1002-SP", "PCIe",
2490                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2491                 break;
2492         case PCI_DEVICE_ID_BMID:
2493                 m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
2494                 break;
2495         case PCI_DEVICE_ID_BSMB:
2496                 m = (typeof(m)){"LP111", "PCI-X2",
2497                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2498                 break;
2499         case PCI_DEVICE_ID_ZEPHYR:
2500                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2501                 break;
2502         case PCI_DEVICE_ID_ZEPHYR_SCSP:
2503                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2504                 break;
2505         case PCI_DEVICE_ID_ZEPHYR_DCSP:
2506                 m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
2507                 GE = 1;
2508                 break;
2509         case PCI_DEVICE_ID_ZMID:
2510                 m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
2511                 break;
2512         case PCI_DEVICE_ID_ZSMB:
2513                 m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
2514                 break;
2515         case PCI_DEVICE_ID_LP101:
2516                 m = (typeof(m)){"LP101", "PCI-X",
2517                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2518                 break;
2519         case PCI_DEVICE_ID_LP10000S:
2520                 m = (typeof(m)){"LP10000-S", "PCI",
2521                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2522                 break;
2523         case PCI_DEVICE_ID_LP11000S:
2524                 m = (typeof(m)){"LP11000-S", "PCI-X2",
2525                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2526                 break;
2527         case PCI_DEVICE_ID_LPE11000S:
2528                 m = (typeof(m)){"LPe11000-S", "PCIe",
2529                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2530                 break;
2531         case PCI_DEVICE_ID_SAT:
2532                 m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
2533                 break;
2534         case PCI_DEVICE_ID_SAT_MID:
2535                 m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
2536                 break;
2537         case PCI_DEVICE_ID_SAT_SMB:
2538                 m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
2539                 break;
2540         case PCI_DEVICE_ID_SAT_DCSP:
2541                 m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
2542                 break;
2543         case PCI_DEVICE_ID_SAT_SCSP:
2544                 m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
2545                 break;
2546         case PCI_DEVICE_ID_SAT_S:
2547                 m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
2548                 break;
2549         case PCI_DEVICE_ID_HORNET:
2550                 m = (typeof(m)){"LP21000", "PCIe",
2551                                 "Obsolete, Unsupported FCoE Adapter"};
2552                 GE = 1;
2553                 break;
2554         case PCI_DEVICE_ID_PROTEUS_VF:
2555                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2556                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2557                 break;
2558         case PCI_DEVICE_ID_PROTEUS_PF:
2559                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2560                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2561                 break;
2562         case PCI_DEVICE_ID_PROTEUS_S:
2563                 m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
2564                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2565                 break;
2566         case PCI_DEVICE_ID_TIGERSHARK:
2567                 oneConnect = 1;
2568                 m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
2569                 break;
2570         case PCI_DEVICE_ID_TOMCAT:
2571                 oneConnect = 1;
2572                 m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
2573                 break;
2574         case PCI_DEVICE_ID_FALCON:
2575                 m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
2576                                 "EmulexSecure Fibre"};
2577                 break;
2578         case PCI_DEVICE_ID_BALIUS:
2579                 m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
2580                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2581                 break;
2582         case PCI_DEVICE_ID_LANCER_FC:
2583                 m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
2584                 break;
2585         case PCI_DEVICE_ID_LANCER_FC_VF:
2586                 m = (typeof(m)){"LPe16000", "PCIe",
2587                                 "Obsolete, Unsupported Fibre Channel Adapter"};
2588                 break;
2589         case PCI_DEVICE_ID_LANCER_FCOE:
2590                 oneConnect = 1;
2591                 m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
2592                 break;
2593         case PCI_DEVICE_ID_LANCER_FCOE_VF:
2594                 oneConnect = 1;
2595                 m = (typeof(m)){"OCe15100", "PCIe",
2596                                 "Obsolete, Unsupported FCoE"};
2597                 break;
2598         case PCI_DEVICE_ID_LANCER_G6_FC:
2599                 m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"};
2600                 break;
2601         case PCI_DEVICE_ID_LANCER_G7_FC:
2602                 m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"};
2603                 break;
2604         case PCI_DEVICE_ID_LANCER_G7P_FC:
2605                 m = (typeof(m)){"LPe38000", "PCIe", "Fibre Channel Adapter"};
2606                 break;
2607         case PCI_DEVICE_ID_SKYHAWK:
2608         case PCI_DEVICE_ID_SKYHAWK_VF:
2609                 oneConnect = 1;
2610                 m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};
2611                 break;
2612         default:
2613                 m = (typeof(m)){"Unknown", "", ""};
2614                 break;
2615         }
2616
2617         if (mdp && mdp[0] == '\0')
2618                 snprintf(mdp, 79,"%s", m.name);
2619         /*
2620          * oneConnect hba requires special processing, they are all initiators
2621          * and we put the port number on the end
2622          */
2623         if (descp && descp[0] == '\0') {
2624                 if (oneConnect)
2625                         snprintf(descp, 255,
2626                                 "Emulex OneConnect %s, %s Initiator %s",
2627                                 m.name, m.function,
2628                                 phba->Port);
2629                 else if (max_speed == 0)
2630                         snprintf(descp, 255,
2631                                 "Emulex %s %s %s",
2632                                 m.name, m.bus, m.function);
2633                 else
2634                         snprintf(descp, 255,
2635                                 "Emulex %s %d%s %s %s",
2636                                 m.name, max_speed, (GE) ? "GE" : "Gb",
2637                                 m.bus, m.function);
2638         }
2639 }
2640
2641 /**
2642  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
2643  * @phba: pointer to lpfc hba data structure.
2644  * @pring: pointer to a IOCB ring.
2645  * @cnt: the number of IOCBs to be posted to the IOCB ring.
2646  *
2647  * This routine posts a given number of IOCBs with the associated DMA buffer
2648  * descriptors specified by the cnt argument to the given IOCB ring.
2649  *
2650  * Return codes
2651  *   The number of IOCBs NOT able to be posted to the IOCB ring.
2652  **/
2653 int
2654 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2655 {
2656         IOCB_t *icmd;
2657         struct lpfc_iocbq *iocb;
2658         struct lpfc_dmabuf *mp1, *mp2;
2659
2660         cnt += pring->missbufcnt;
2661
2662         /* While there are buffers to post */
2663         while (cnt > 0) {
2664                 /* Allocate buffer for  command iocb */
2665                 iocb = lpfc_sli_get_iocbq(phba);
2666                 if (iocb == NULL) {
2667                         pring->missbufcnt = cnt;
2668                         return cnt;
2669                 }
2670                 icmd = &iocb->iocb;
2671
2672                 /* 2 buffers can be posted per command */
2673                 /* Allocate buffer to post */
2674                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2675                 if (mp1)
2676                     mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2677                 if (!mp1 || !mp1->virt) {
2678                         kfree(mp1);
2679                         lpfc_sli_release_iocbq(phba, iocb);
2680                         pring->missbufcnt = cnt;
2681                         return cnt;
2682                 }
2683
2684                 INIT_LIST_HEAD(&mp1->list);
2685                 /* Allocate buffer to post */
2686                 if (cnt > 1) {
2687                         mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2688                         if (mp2)
2689                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2690                                                             &mp2->phys);
2691                         if (!mp2 || !mp2->virt) {
2692                                 kfree(mp2);
2693                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2694                                 kfree(mp1);
2695                                 lpfc_sli_release_iocbq(phba, iocb);
2696                                 pring->missbufcnt = cnt;
2697                                 return cnt;
2698                         }
2699
2700                         INIT_LIST_HEAD(&mp2->list);
2701                 } else {
2702                         mp2 = NULL;
2703                 }
2704
2705                 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2706                 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2707                 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2708                 icmd->ulpBdeCount = 1;
2709                 cnt--;
2710                 if (mp2) {
2711                         icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2712                         icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2713                         icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2714                         cnt--;
2715                         icmd->ulpBdeCount = 2;
2716                 }
2717
2718                 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2719                 icmd->ulpLe = 1;
2720
2721                 if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2722                     IOCB_ERROR) {
2723                         lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2724                         kfree(mp1);
2725                         cnt++;
2726                         if (mp2) {
2727                                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2728                                 kfree(mp2);
2729                                 cnt++;
2730                         }
2731                         lpfc_sli_release_iocbq(phba, iocb);
2732                         pring->missbufcnt = cnt;
2733                         return cnt;
2734                 }
2735                 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2736                 if (mp2)
2737                         lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2738         }
2739         pring->missbufcnt = 0;
2740         return 0;
2741 }
2742
2743 /**
2744  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2745  * @phba: pointer to lpfc hba data structure.
2746  *
2747  * This routine posts initial receive IOCB buffers to the ELS ring. The
2748  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2749  * set to 64 IOCBs. SLI3 only.
2750  *
2751  * Return codes
2752  *   0 - success (currently always success)
2753  **/
2754 static int
2755 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2756 {
2757         struct lpfc_sli *psli = &phba->sli;
2758
2759         /* Ring 0, ELS / CT buffers */
2760         lpfc_post_buffer(phba, &psli->sli3_ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2761         /* Ring 2 - FCP no buffers needed */
2762
2763         return 0;
2764 }
2765
2766 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2767
2768 /**
2769  * lpfc_sha_init - Set up initial array of hash table entries
2770  * @HashResultPointer: pointer to an array as hash table.
2771  *
2772  * This routine sets up the initial values to the array of hash table entries
2773  * for the LC HBAs.
2774  **/
2775 static void
2776 lpfc_sha_init(uint32_t * HashResultPointer)
2777 {
2778         HashResultPointer[0] = 0x67452301;
2779         HashResultPointer[1] = 0xEFCDAB89;
2780         HashResultPointer[2] = 0x98BADCFE;
2781         HashResultPointer[3] = 0x10325476;
2782         HashResultPointer[4] = 0xC3D2E1F0;
2783 }
2784
2785 /**
2786  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2787  * @HashResultPointer: pointer to an initial/result hash table.
2788  * @HashWorkingPointer: pointer to an working hash table.
2789  *
2790  * This routine iterates an initial hash table pointed by @HashResultPointer
2791  * with the values from the working hash table pointeed by @HashWorkingPointer.
2792  * The results are putting back to the initial hash table, returned through
2793  * the @HashResultPointer as the result hash table.
2794  **/
2795 static void
2796 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2797 {
2798         int t;
2799         uint32_t TEMP;
2800         uint32_t A, B, C, D, E;
2801         t = 16;
2802         do {
2803                 HashWorkingPointer[t] =
2804                     S(1,
2805                       HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2806                                                                      8] ^
2807                       HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2808         } while (++t <= 79);
2809         t = 0;
2810         A = HashResultPointer[0];
2811         B = HashResultPointer[1];
2812         C = HashResultPointer[2];
2813         D = HashResultPointer[3];
2814         E = HashResultPointer[4];
2815
2816         do {
2817                 if (t < 20) {
2818                         TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2819                 } else if (t < 40) {
2820                         TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2821                 } else if (t < 60) {
2822                         TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2823                 } else {
2824                         TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2825                 }
2826                 TEMP += S(5, A) + E + HashWorkingPointer[t];
2827                 E = D;
2828                 D = C;
2829                 C = S(30, B);
2830                 B = A;
2831                 A = TEMP;
2832         } while (++t <= 79);
2833
2834         HashResultPointer[0] += A;
2835         HashResultPointer[1] += B;
2836         HashResultPointer[2] += C;
2837         HashResultPointer[3] += D;
2838         HashResultPointer[4] += E;
2839
2840 }
2841
2842 /**
2843  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2844  * @RandomChallenge: pointer to the entry of host challenge random number array.
2845  * @HashWorking: pointer to the entry of the working hash array.
2846  *
2847  * This routine calculates the working hash array referred by @HashWorking
2848  * from the challenge random numbers associated with the host, referred by
2849  * @RandomChallenge. The result is put into the entry of the working hash
2850  * array and returned by reference through @HashWorking.
2851  **/
2852 static void
2853 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2854 {
2855         *HashWorking = (*RandomChallenge ^ *HashWorking);
2856 }
2857
2858 /**
2859  * lpfc_hba_init - Perform special handling for LC HBA initialization
2860  * @phba: pointer to lpfc hba data structure.
2861  * @hbainit: pointer to an array of unsigned 32-bit integers.
2862  *
2863  * This routine performs the special handling for LC HBA initialization.
2864  **/
2865 void
2866 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2867 {
2868         int t;
2869         uint32_t *HashWorking;
2870         uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2871
2872         HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2873         if (!HashWorking)
2874                 return;
2875
2876         HashWorking[0] = HashWorking[78] = *pwwnn++;
2877         HashWorking[1] = HashWorking[79] = *pwwnn;
2878
2879         for (t = 0; t < 7; t++)
2880                 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2881
2882         lpfc_sha_init(hbainit);
2883         lpfc_sha_iterate(hbainit, HashWorking);
2884         kfree(HashWorking);
2885 }
2886
2887 /**
2888  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2889  * @vport: pointer to a virtual N_Port data structure.
2890  *
2891  * This routine performs the necessary cleanups before deleting the @vport.
2892  * It invokes the discovery state machine to perform necessary state
2893  * transitions and to release the ndlps associated with the @vport. Note,
2894  * the physical port is treated as @vport 0.
2895  **/
2896 void
2897 lpfc_cleanup(struct lpfc_vport *vport)
2898 {
2899         struct lpfc_hba   *phba = vport->phba;
2900         struct lpfc_nodelist *ndlp, *next_ndlp;
2901         int i = 0;
2902
2903         if (phba->link_state > LPFC_LINK_DOWN)
2904                 lpfc_port_link_failure(vport);
2905
2906         /* Clean up VMID resources */
2907         if (lpfc_is_vmid_enabled(phba))
2908                 lpfc_vmid_vport_cleanup(vport);
2909
2910         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2911                 if (vport->port_type != LPFC_PHYSICAL_PORT &&
2912                     ndlp->nlp_DID == Fabric_DID) {
2913                         /* Just free up ndlp with Fabric_DID for vports */
2914                         lpfc_nlp_put(ndlp);
2915                         continue;
2916                 }
2917
2918                 if (ndlp->nlp_DID == Fabric_Cntl_DID &&
2919                     ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
2920                         lpfc_nlp_put(ndlp);
2921                         continue;
2922                 }
2923
2924                 /* Fabric Ports not in UNMAPPED state are cleaned up in the
2925                  * DEVICE_RM event.
2926                  */
2927                 if (ndlp->nlp_type & NLP_FABRIC &&
2928                     ndlp->nlp_state == NLP_STE_UNMAPPED_NODE)
2929                         lpfc_disc_state_machine(vport, ndlp, NULL,
2930                                         NLP_EVT_DEVICE_RECOVERY);
2931
2932                 if (!(ndlp->fc4_xpt_flags & (NVME_XPT_REGD|SCSI_XPT_REGD)))
2933                         lpfc_disc_state_machine(vport, ndlp, NULL,
2934                                         NLP_EVT_DEVICE_RM);
2935         }
2936
2937         /* At this point, ALL ndlp's should be gone
2938          * because of the previous NLP_EVT_DEVICE_RM.
2939          * Lets wait for this to happen, if needed.
2940          */
2941         while (!list_empty(&vport->fc_nodes)) {
2942                 if (i++ > 3000) {
2943                         lpfc_printf_vlog(vport, KERN_ERR,
2944                                          LOG_TRACE_EVENT,
2945                                 "0233 Nodelist not empty\n");
2946                         list_for_each_entry_safe(ndlp, next_ndlp,
2947                                                 &vport->fc_nodes, nlp_listp) {
2948                                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2949                                                  LOG_TRACE_EVENT,
2950                                                  "0282 did:x%x ndlp:x%px "
2951                                                  "refcnt:%d xflags x%x nflag x%x\n",
2952                                                  ndlp->nlp_DID, (void *)ndlp,
2953                                                  kref_read(&ndlp->kref),
2954                                                  ndlp->fc4_xpt_flags,
2955                                                  ndlp->nlp_flag);
2956                         }
2957                         break;
2958                 }
2959
2960                 /* Wait for any activity on ndlps to settle */
2961                 msleep(10);
2962         }
2963         lpfc_cleanup_vports_rrqs(vport, NULL);
2964 }
2965
2966 /**
2967  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2968  * @vport: pointer to a virtual N_Port data structure.
2969  *
2970  * This routine stops all the timers associated with a @vport. This function
2971  * is invoked before disabling or deleting a @vport. Note that the physical
2972  * port is treated as @vport 0.
2973  **/
2974 void
2975 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2976 {
2977         del_timer_sync(&vport->els_tmofunc);
2978         del_timer_sync(&vport->delayed_disc_tmo);
2979         lpfc_can_disctmo(vport);
2980         return;
2981 }
2982
2983 /**
2984  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2985  * @phba: pointer to lpfc hba data structure.
2986  *
2987  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2988  * caller of this routine should already hold the host lock.
2989  **/
2990 void
2991 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2992 {
2993         /* Clear pending FCF rediscovery wait flag */
2994         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2995
2996         /* Now, try to stop the timer */
2997         del_timer(&phba->fcf.redisc_wait);
2998 }
2999
3000 /**
3001  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
3002  * @phba: pointer to lpfc hba data structure.
3003  *
3004  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
3005  * checks whether the FCF rediscovery wait timer is pending with the host
3006  * lock held before proceeding with disabling the timer and clearing the
3007  * wait timer pendig flag.
3008  **/
3009 void
3010 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
3011 {
3012         spin_lock_irq(&phba->hbalock);
3013         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
3014                 /* FCF rediscovery timer already fired or stopped */
3015                 spin_unlock_irq(&phba->hbalock);
3016                 return;
3017         }
3018         __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
3019         /* Clear failover in progress flags */
3020         phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
3021         spin_unlock_irq(&phba->hbalock);
3022 }
3023
3024 /**
3025  * lpfc_cmf_stop - Stop CMF processing
3026  * @phba: pointer to lpfc hba data structure.
3027  *
3028  * This is called when the link goes down or if CMF mode is turned OFF.
3029  * It is also called when going offline or unloaded just before the
3030  * congestion info buffer is unregistered.
3031  **/
3032 void
3033 lpfc_cmf_stop(struct lpfc_hba *phba)
3034 {
3035         int cpu;
3036         struct lpfc_cgn_stat *cgs;
3037
3038         /* We only do something if CMF is enabled */
3039         if (!phba->sli4_hba.pc_sli4_params.cmf)
3040                 return;
3041
3042         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
3043                         "6221 Stop CMF / Cancel Timer\n");
3044
3045         /* Cancel the CMF timer */
3046         hrtimer_cancel(&phba->cmf_timer);
3047
3048         /* Zero CMF counters */
3049         atomic_set(&phba->cmf_busy, 0);
3050         for_each_present_cpu(cpu) {
3051                 cgs = per_cpu_ptr(phba->cmf_stat, cpu);
3052                 atomic64_set(&cgs->total_bytes, 0);
3053                 atomic64_set(&cgs->rcv_bytes, 0);
3054                 atomic_set(&cgs->rx_io_cnt, 0);
3055                 atomic64_set(&cgs->rx_latency, 0);
3056         }
3057         atomic_set(&phba->cmf_bw_wait, 0);
3058
3059         /* Resume any blocked IO - Queue unblock on workqueue */
3060         queue_work(phba->wq, &phba->unblock_request_work);
3061 }
3062
3063 static inline uint64_t
3064 lpfc_get_max_line_rate(struct lpfc_hba *phba)
3065 {
3066         uint64_t rate = lpfc_sli_port_speed_get(phba);
3067
3068         return ((((unsigned long)rate) * 1024 * 1024) / 10);
3069 }
3070
3071 void
3072 lpfc_cmf_signal_init(struct lpfc_hba *phba)
3073 {
3074         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
3075                         "6223 Signal CMF init\n");
3076
3077         /* Use the new fc_linkspeed to recalculate */
3078         phba->cmf_interval_rate = LPFC_CMF_INTERVAL;
3079         phba->cmf_max_line_rate = lpfc_get_max_line_rate(phba);
3080         phba->cmf_link_byte_count = div_u64(phba->cmf_max_line_rate *
3081                                             phba->cmf_interval_rate, 1000);
3082         phba->cmf_max_bytes_per_interval = phba->cmf_link_byte_count;
3083
3084         /* This is a signal to firmware to sync up CMF BW with link speed */
3085         lpfc_issue_cmf_sync_wqe(phba, 0, 0);
3086 }
3087
3088 /**
3089  * lpfc_cmf_start - Start CMF processing
3090  * @phba: pointer to lpfc hba data structure.
3091  *
3092  * This is called when the link comes up or if CMF mode is turned OFF
3093  * to Monitor or Managed.
3094  **/
3095 void
3096 lpfc_cmf_start(struct lpfc_hba *phba)
3097 {
3098         struct lpfc_cgn_stat *cgs;
3099         int cpu;
3100
3101         /* We only do something if CMF is enabled */
3102         if (!phba->sli4_hba.pc_sli4_params.cmf ||
3103             phba->cmf_active_mode == LPFC_CFG_OFF)
3104                 return;
3105
3106         /* Reinitialize congestion buffer info */
3107         lpfc_init_congestion_buf(phba);
3108
3109         atomic_set(&phba->cgn_fabric_warn_cnt, 0);
3110         atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
3111         atomic_set(&phba->cgn_sync_alarm_cnt, 0);
3112         atomic_set(&phba->cgn_sync_warn_cnt, 0);
3113
3114         atomic_set(&phba->cmf_busy, 0);
3115         for_each_present_cpu(cpu) {
3116                 cgs = per_cpu_ptr(phba->cmf_stat, cpu);
3117                 atomic64_set(&cgs->total_bytes, 0);
3118                 atomic64_set(&cgs->rcv_bytes, 0);
3119                 atomic_set(&cgs->rx_io_cnt, 0);
3120                 atomic64_set(&cgs->rx_latency, 0);
3121         }
3122         phba->cmf_latency.tv_sec = 0;
3123         phba->cmf_latency.tv_nsec = 0;
3124
3125         lpfc_cmf_signal_init(phba);
3126
3127         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
3128                         "6222 Start CMF / Timer\n");
3129
3130         phba->cmf_timer_cnt = 0;
3131         hrtimer_start(&phba->cmf_timer,
3132                       ktime_set(0, LPFC_CMF_INTERVAL * 1000000),
3133                       HRTIMER_MODE_REL);
3134         /* Setup for latency check in IO cmpl routines */
3135         ktime_get_real_ts64(&phba->cmf_latency);
3136
3137         atomic_set(&phba->cmf_bw_wait, 0);
3138         atomic_set(&phba->cmf_stop_io, 0);
3139 }
3140
3141 /**
3142  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
3143  * @phba: pointer to lpfc hba data structure.
3144  *
3145  * This routine stops all the timers associated with a HBA. This function is
3146  * invoked before either putting a HBA offline or unloading the driver.
3147  **/
3148 void
3149 lpfc_stop_hba_timers(struct lpfc_hba *phba)
3150 {
3151         if (phba->pport)
3152                 lpfc_stop_vport_timers(phba->pport);
3153         cancel_delayed_work_sync(&phba->eq_delay_work);
3154         cancel_delayed_work_sync(&phba->idle_stat_delay_work);
3155         del_timer_sync(&phba->sli.mbox_tmo);
3156         del_timer_sync(&phba->fabric_block_timer);
3157         del_timer_sync(&phba->eratt_poll);
3158         del_timer_sync(&phba->hb_tmofunc);
3159         if (phba->sli_rev == LPFC_SLI_REV4) {
3160                 del_timer_sync(&phba->rrq_tmr);
3161                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
3162         }
3163         phba->hba_flag &= ~(HBA_HBEAT_INP | HBA_HBEAT_TMO);
3164
3165         switch (phba->pci_dev_grp) {
3166         case LPFC_PCI_DEV_LP:
3167                 /* Stop any LightPulse device specific driver timers */
3168                 del_timer_sync(&phba->fcp_poll_timer);
3169                 break;
3170         case LPFC_PCI_DEV_OC:
3171                 /* Stop any OneConnect device specific driver timers */
3172                 lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
3173                 break;
3174         default:
3175                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3176                                 "0297 Invalid device group (x%x)\n",
3177                                 phba->pci_dev_grp);
3178                 break;
3179         }
3180         return;
3181 }
3182
3183 /**
3184  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
3185  * @phba: pointer to lpfc hba data structure.
3186  * @mbx_action: flag for mailbox no wait action.
3187  *
3188  * This routine marks a HBA's management interface as blocked. Once the HBA's
3189  * management interface is marked as blocked, all the user space access to
3190  * the HBA, whether they are from sysfs interface or libdfc interface will
3191  * all be blocked. The HBA is set to block the management interface when the
3192  * driver prepares the HBA interface for online or offline.
3193  **/
3194 static void
3195 lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
3196 {
3197         unsigned long iflag;
3198         uint8_t actcmd = MBX_HEARTBEAT;
3199         unsigned long timeout;
3200
3201         spin_lock_irqsave(&phba->hbalock, iflag);
3202         phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
3203         spin_unlock_irqrestore(&phba->hbalock, iflag);
3204         if (mbx_action == LPFC_MBX_NO_WAIT)
3205                 return;
3206         timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
3207         spin_lock_irqsave(&phba->hbalock, iflag);
3208         if (phba->sli.mbox_active) {
3209                 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
3210                 /* Determine how long we might wait for the active mailbox
3211                  * command to be gracefully completed by firmware.
3212                  */
3213                 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
3214                                 phba->sli.mbox_active) * 1000) + jiffies;
3215         }
3216         spin_unlock_irqrestore(&phba->hbalock, iflag);
3217
3218         /* Wait for the outstnading mailbox command to complete */
3219         while (phba->sli.mbox_active) {
3220                 /* Check active mailbox complete status every 2ms */
3221                 msleep(2);
3222                 if (time_after(jiffies, timeout)) {
3223                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3224                                         "2813 Mgmt IO is Blocked %x "
3225                                         "- mbox cmd %x still active\n",
3226                                         phba->sli.sli_flag, actcmd);
3227                         break;
3228                 }
3229         }
3230 }
3231
3232 /**
3233  * lpfc_sli4_node_prep - Assign RPIs for active nodes.
3234  * @phba: pointer to lpfc hba data structure.
3235  *
3236  * Allocate RPIs for all active remote nodes. This is needed whenever
3237  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
3238  * is to fixup the temporary rpi assignments.
3239  **/
3240 void
3241 lpfc_sli4_node_prep(struct lpfc_hba *phba)
3242 {
3243         struct lpfc_nodelist  *ndlp, *next_ndlp;
3244         struct lpfc_vport **vports;
3245         int i, rpi;
3246
3247         if (phba->sli_rev != LPFC_SLI_REV4)
3248                 return;
3249
3250         vports = lpfc_create_vport_work_array(phba);
3251         if (vports == NULL)
3252                 return;
3253
3254         for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3255                 if (vports[i]->load_flag & FC_UNLOADING)
3256                         continue;
3257
3258                 list_for_each_entry_safe(ndlp, next_ndlp,
3259                                          &vports[i]->fc_nodes,
3260                                          nlp_listp) {
3261                         rpi = lpfc_sli4_alloc_rpi(phba);
3262                         if (rpi == LPFC_RPI_ALLOC_ERROR) {
3263                                 /* TODO print log? */
3264                                 continue;
3265                         }
3266                         ndlp->nlp_rpi = rpi;
3267                         lpfc_printf_vlog(ndlp->vport, KERN_INFO,
3268                                          LOG_NODE | LOG_DISCOVERY,
3269                                          "0009 Assign RPI x%x to ndlp x%px "
3270                                          "DID:x%06x flg:x%x\n",
3271                                          ndlp->nlp_rpi, ndlp, ndlp->nlp_DID,
3272                                          ndlp->nlp_flag);
3273                 }
3274         }
3275         lpfc_destroy_vport_work_array(phba, vports);
3276 }
3277
3278 /**
3279  * lpfc_create_expedite_pool - create expedite pool
3280  * @phba: pointer to lpfc hba data structure.
3281  *
3282  * This routine moves a batch of XRIs from lpfc_io_buf_list_put of HWQ 0
3283  * to expedite pool. Mark them as expedite.
3284  **/
3285 static void lpfc_create_expedite_pool(struct lpfc_hba *phba)
3286 {
3287         struct lpfc_sli4_hdw_queue *qp;
3288         struct lpfc_io_buf *lpfc_ncmd;
3289         struct lpfc_io_buf *lpfc_ncmd_next;
3290         struct lpfc_epd_pool *epd_pool;
3291         unsigned long iflag;
3292
3293         epd_pool = &phba->epd_pool;
3294         qp = &phba->sli4_hba.hdwq[0];
3295
3296         spin_lock_init(&epd_pool->lock);
3297         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3298         spin_lock(&epd_pool->lock);
3299         INIT_LIST_HEAD(&epd_pool->list);
3300         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3301                                  &qp->lpfc_io_buf_list_put, list) {
3302                 list_move_tail(&lpfc_ncmd->list, &epd_pool->list);
3303                 lpfc_ncmd->expedite = true;
3304                 qp->put_io_bufs--;
3305                 epd_pool->count++;
3306                 if (epd_pool->count >= XRI_BATCH)
3307                         break;
3308         }
3309         spin_unlock(&epd_pool->lock);
3310         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3311 }
3312
3313 /**
3314  * lpfc_destroy_expedite_pool - destroy expedite pool
3315  * @phba: pointer to lpfc hba data structure.
3316  *
3317  * This routine returns XRIs from expedite pool to lpfc_io_buf_list_put
3318  * of HWQ 0. Clear the mark.
3319  **/
3320 static void lpfc_destroy_expedite_pool(struct lpfc_hba *phba)
3321 {
3322         struct lpfc_sli4_hdw_queue *qp;
3323         struct lpfc_io_buf *lpfc_ncmd;
3324         struct lpfc_io_buf *lpfc_ncmd_next;
3325         struct lpfc_epd_pool *epd_pool;
3326         unsigned long iflag;
3327
3328         epd_pool = &phba->epd_pool;
3329         qp = &phba->sli4_hba.hdwq[0];
3330
3331         spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3332         spin_lock(&epd_pool->lock);
3333         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3334                                  &epd_pool->list, list) {
3335                 list_move_tail(&lpfc_ncmd->list,
3336                                &qp->lpfc_io_buf_list_put);
3337                 lpfc_ncmd->flags = false;
3338                 qp->put_io_bufs++;
3339                 epd_pool->count--;
3340         }
3341         spin_unlock(&epd_pool->lock);
3342         spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3343 }
3344
3345 /**
3346  * lpfc_create_multixri_pools - create multi-XRI pools
3347  * @phba: pointer to lpfc hba data structure.
3348  *
3349  * This routine initialize public, private per HWQ. Then, move XRIs from
3350  * lpfc_io_buf_list_put to public pool. High and low watermark are also
3351  * Initialized.
3352  **/
3353 void lpfc_create_multixri_pools(struct lpfc_hba *phba)
3354 {
3355         u32 i, j;
3356         u32 hwq_count;
3357         u32 count_per_hwq;
3358         struct lpfc_io_buf *lpfc_ncmd;
3359         struct lpfc_io_buf *lpfc_ncmd_next;
3360         unsigned long iflag;
3361         struct lpfc_sli4_hdw_queue *qp;
3362         struct lpfc_multixri_pool *multixri_pool;
3363         struct lpfc_pbl_pool *pbl_pool;
3364         struct lpfc_pvt_pool *pvt_pool;
3365
3366         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3367                         "1234 num_hdw_queue=%d num_present_cpu=%d common_xri_cnt=%d\n",
3368                         phba->cfg_hdw_queue, phba->sli4_hba.num_present_cpu,
3369                         phba->sli4_hba.io_xri_cnt);
3370
3371         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3372                 lpfc_create_expedite_pool(phba);
3373
3374         hwq_count = phba->cfg_hdw_queue;
3375         count_per_hwq = phba->sli4_hba.io_xri_cnt / hwq_count;
3376
3377         for (i = 0; i < hwq_count; i++) {
3378                 multixri_pool = kzalloc(sizeof(*multixri_pool), GFP_KERNEL);
3379
3380                 if (!multixri_pool) {
3381                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3382                                         "1238 Failed to allocate memory for "
3383                                         "multixri_pool\n");
3384
3385                         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3386                                 lpfc_destroy_expedite_pool(phba);
3387
3388                         j = 0;
3389                         while (j < i) {
3390                                 qp = &phba->sli4_hba.hdwq[j];
3391                                 kfree(qp->p_multixri_pool);
3392                                 j++;
3393                         }
3394                         phba->cfg_xri_rebalancing = 0;
3395                         return;
3396                 }
3397
3398                 qp = &phba->sli4_hba.hdwq[i];
3399                 qp->p_multixri_pool = multixri_pool;
3400
3401                 multixri_pool->xri_limit = count_per_hwq;
3402                 multixri_pool->rrb_next_hwqid = i;
3403
3404                 /* Deal with public free xri pool */
3405                 pbl_pool = &multixri_pool->pbl_pool;
3406                 spin_lock_init(&pbl_pool->lock);
3407                 spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3408                 spin_lock(&pbl_pool->lock);
3409                 INIT_LIST_HEAD(&pbl_pool->list);
3410                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3411                                          &qp->lpfc_io_buf_list_put, list) {
3412                         list_move_tail(&lpfc_ncmd->list, &pbl_pool->list);
3413                         qp->put_io_bufs--;
3414                         pbl_pool->count++;
3415                 }
3416                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3417                                 "1235 Moved %d buffers from PUT list over to pbl_pool[%d]\n",
3418                                 pbl_pool->count, i);
3419                 spin_unlock(&pbl_pool->lock);
3420                 spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3421
3422                 /* Deal with private free xri pool */
3423                 pvt_pool = &multixri_pool->pvt_pool;
3424                 pvt_pool->high_watermark = multixri_pool->xri_limit / 2;
3425                 pvt_pool->low_watermark = XRI_BATCH;
3426                 spin_lock_init(&pvt_pool->lock);
3427                 spin_lock_irqsave(&pvt_pool->lock, iflag);
3428                 INIT_LIST_HEAD(&pvt_pool->list);
3429                 pvt_pool->count = 0;
3430                 spin_unlock_irqrestore(&pvt_pool->lock, iflag);
3431         }
3432 }
3433
3434 /**
3435  * lpfc_destroy_multixri_pools - destroy multi-XRI pools
3436  * @phba: pointer to lpfc hba data structure.
3437  *
3438  * This routine returns XRIs from public/private to lpfc_io_buf_list_put.
3439  **/
3440 static void lpfc_destroy_multixri_pools(struct lpfc_hba *phba)
3441 {
3442         u32 i;
3443         u32 hwq_count;
3444         struct lpfc_io_buf *lpfc_ncmd;
3445         struct lpfc_io_buf *lpfc_ncmd_next;
3446         unsigned long iflag;
3447         struct lpfc_sli4_hdw_queue *qp;
3448         struct lpfc_multixri_pool *multixri_pool;
3449         struct lpfc_pbl_pool *pbl_pool;
3450         struct lpfc_pvt_pool *pvt_pool;
3451
3452         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3453                 lpfc_destroy_expedite_pool(phba);
3454
3455         if (!(phba->pport->load_flag & FC_UNLOADING))
3456                 lpfc_sli_flush_io_rings(phba);
3457
3458         hwq_count = phba->cfg_hdw_queue;
3459
3460         for (i = 0; i < hwq_count; i++) {
3461                 qp = &phba->sli4_hba.hdwq[i];
3462                 multixri_pool = qp->p_multixri_pool;
3463                 if (!multixri_pool)
3464                         continue;
3465
3466                 qp->p_multixri_pool = NULL;
3467
3468                 spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3469
3470                 /* Deal with public free xri pool */
3471                 pbl_pool = &multixri_pool->pbl_pool;
3472                 spin_lock(&pbl_pool->lock);
3473
3474                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3475                                 "1236 Moving %d buffers from pbl_pool[%d] TO PUT list\n",
3476                                 pbl_pool->count, i);
3477
3478                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3479                                          &pbl_pool->list, list) {
3480                         list_move_tail(&lpfc_ncmd->list,
3481                                        &qp->lpfc_io_buf_list_put);
3482                         qp->put_io_bufs++;
3483                         pbl_pool->count--;
3484                 }
3485
3486                 INIT_LIST_HEAD(&pbl_pool->list);
3487                 pbl_pool->count = 0;
3488
3489                 spin_unlock(&pbl_pool->lock);
3490
3491                 /* Deal with private free xri pool */
3492                 pvt_pool = &multixri_pool->pvt_pool;
3493                 spin_lock(&pvt_pool->lock);
3494
3495                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3496                                 "1237 Moving %d buffers from pvt_pool[%d] TO PUT list\n",
3497                                 pvt_pool->count, i);
3498
3499                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3500                                          &pvt_pool->list, list) {
3501                         list_move_tail(&lpfc_ncmd->list,
3502                                        &qp->lpfc_io_buf_list_put);
3503                         qp->put_io_bufs++;
3504                         pvt_pool->count--;
3505                 }
3506
3507                 INIT_LIST_HEAD(&pvt_pool->list);
3508                 pvt_pool->count = 0;
3509
3510                 spin_unlock(&pvt_pool->lock);
3511                 spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3512
3513                 kfree(multixri_pool);
3514         }
3515 }
3516
3517 /**
3518  * lpfc_online - Initialize and bring a HBA online
3519  * @phba: pointer to lpfc hba data structure.
3520  *
3521  * This routine initializes the HBA and brings a HBA online. During this
3522  * process, the management interface is blocked to prevent user space access
3523  * to the HBA interfering with the driver initialization.
3524  *
3525  * Return codes
3526  *   0 - successful
3527  *   1 - failed
3528  **/
3529 int
3530 lpfc_online(struct lpfc_hba *phba)
3531 {
3532         struct lpfc_vport *vport;
3533         struct lpfc_vport **vports;
3534         int i, error = 0;
3535         bool vpis_cleared = false;
3536
3537         if (!phba)
3538                 return 0;
3539         vport = phba->pport;
3540
3541         if (!(vport->fc_flag & FC_OFFLINE_MODE))
3542                 return 0;
3543
3544         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3545                         "0458 Bring Adapter online\n");
3546
3547         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
3548
3549         if (phba->sli_rev == LPFC_SLI_REV4) {
3550                 if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
3551                         lpfc_unblock_mgmt_io(phba);
3552                         return 1;
3553                 }
3554                 spin_lock_irq(&phba->hbalock);
3555                 if (!phba->sli4_hba.max_cfg_param.vpi_used)
3556                         vpis_cleared = true;
3557                 spin_unlock_irq(&phba->hbalock);
3558
3559                 /* Reestablish the local initiator port.
3560                  * The offline process destroyed the previous lport.
3561                  */
3562                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
3563                                 !phba->nvmet_support) {
3564                         error = lpfc_nvme_create_localport(phba->pport);
3565                         if (error)
3566                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3567                                         "6132 NVME restore reg failed "
3568                                         "on nvmei error x%x\n", error);
3569                 }
3570         } else {
3571                 lpfc_sli_queue_init(phba);
3572                 if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
3573                         lpfc_unblock_mgmt_io(phba);
3574                         return 1;
3575                 }
3576         }
3577
3578         vports = lpfc_create_vport_work_array(phba);
3579         if (vports != NULL) {
3580                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3581                         struct Scsi_Host *shost;
3582                         shost = lpfc_shost_from_vport(vports[i]);
3583                         spin_lock_irq(shost->host_lock);
3584                         vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
3585                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3586                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3587                         if (phba->sli_rev == LPFC_SLI_REV4) {
3588                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
3589                                 if ((vpis_cleared) &&
3590                                     (vports[i]->port_type !=
3591                                         LPFC_PHYSICAL_PORT))
3592                                         vports[i]->vpi = 0;
3593                         }
3594                         spin_unlock_irq(shost->host_lock);
3595                 }
3596         }
3597         lpfc_destroy_vport_work_array(phba, vports);
3598
3599         if (phba->cfg_xri_rebalancing)
3600                 lpfc_create_multixri_pools(phba);
3601
3602         lpfc_cpuhp_add(phba);
3603
3604         lpfc_unblock_mgmt_io(phba);
3605         return 0;
3606 }
3607
3608 /**
3609  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
3610  * @phba: pointer to lpfc hba data structure.
3611  *
3612  * This routine marks a HBA's management interface as not blocked. Once the
3613  * HBA's management interface is marked as not blocked, all the user space
3614  * access to the HBA, whether they are from sysfs interface or libdfc
3615  * interface will be allowed. The HBA is set to block the management interface
3616  * when the driver prepares the HBA interface for online or offline and then
3617  * set to unblock the management interface afterwards.
3618  **/
3619 void
3620 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
3621 {
3622         unsigned long iflag;
3623
3624         spin_lock_irqsave(&phba->hbalock, iflag);
3625         phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
3626         spin_unlock_irqrestore(&phba->hbalock, iflag);
3627 }
3628
3629 /**
3630  * lpfc_offline_prep - Prepare a HBA to be brought offline
3631  * @phba: pointer to lpfc hba data structure.
3632  * @mbx_action: flag for mailbox shutdown action.
3633  *
3634  * This routine is invoked to prepare a HBA to be brought offline. It performs
3635  * unregistration login to all the nodes on all vports and flushes the mailbox
3636  * queue to make it ready to be brought offline.
3637  **/
3638 void
3639 lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
3640 {
3641         struct lpfc_vport *vport = phba->pport;
3642         struct lpfc_nodelist  *ndlp, *next_ndlp;
3643         struct lpfc_vport **vports;
3644         struct Scsi_Host *shost;
3645         int i;
3646
3647         if (vport->fc_flag & FC_OFFLINE_MODE)
3648                 return;
3649
3650         lpfc_block_mgmt_io(phba, mbx_action);
3651
3652         lpfc_linkdown(phba);
3653
3654         /* Issue an unreg_login to all nodes on all vports */
3655         vports = lpfc_create_vport_work_array(phba);
3656         if (vports != NULL) {
3657                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3658                         if (vports[i]->load_flag & FC_UNLOADING)
3659                                 continue;
3660                         shost = lpfc_shost_from_vport(vports[i]);
3661                         spin_lock_irq(shost->host_lock);
3662                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
3663                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3664                         vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
3665                         spin_unlock_irq(shost->host_lock);
3666
3667                         shost = lpfc_shost_from_vport(vports[i]);
3668                         list_for_each_entry_safe(ndlp, next_ndlp,
3669                                                  &vports[i]->fc_nodes,
3670                                                  nlp_listp) {
3671
3672                                 spin_lock_irq(&ndlp->lock);
3673                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3674                                 spin_unlock_irq(&ndlp->lock);
3675
3676                                 lpfc_unreg_rpi(vports[i], ndlp);
3677                                 /*
3678                                  * Whenever an SLI4 port goes offline, free the
3679                                  * RPI. Get a new RPI when the adapter port
3680                                  * comes back online.
3681                                  */
3682                                 if (phba->sli_rev == LPFC_SLI_REV4) {
3683                                         lpfc_printf_vlog(vports[i], KERN_INFO,
3684                                                  LOG_NODE | LOG_DISCOVERY,
3685                                                  "0011 Free RPI x%x on "
3686                                                  "ndlp: x%px did x%x\n",
3687                                                  ndlp->nlp_rpi, ndlp,
3688                                                  ndlp->nlp_DID);
3689                                         lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
3690                                         ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
3691                                 }
3692
3693                                 if (ndlp->nlp_type & NLP_FABRIC) {
3694                                         lpfc_disc_state_machine(vports[i], ndlp,
3695                                                 NULL, NLP_EVT_DEVICE_RECOVERY);
3696
3697                                         /* Don't remove the node unless the
3698                                          * has been unregistered with the
3699                                          * transport.  If so, let dev_loss
3700                                          * take care of the node.
3701                                          */
3702                                         if (!(ndlp->fc4_xpt_flags &
3703                                               (NVME_XPT_REGD | SCSI_XPT_REGD)))
3704                                                 lpfc_disc_state_machine
3705                                                         (vports[i], ndlp,
3706                                                          NULL,
3707                                                          NLP_EVT_DEVICE_RM);
3708                                 }
3709                         }
3710                 }
3711         }
3712         lpfc_destroy_vport_work_array(phba, vports);
3713
3714         lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
3715
3716         if (phba->wq)
3717                 flush_workqueue(phba->wq);
3718 }
3719
3720 /**
3721  * lpfc_offline - Bring a HBA offline
3722  * @phba: pointer to lpfc hba data structure.
3723  *
3724  * This routine actually brings a HBA offline. It stops all the timers
3725  * associated with the HBA, brings down the SLI layer, and eventually
3726  * marks the HBA as in offline state for the upper layer protocol.
3727  **/
3728 void
3729 lpfc_offline(struct lpfc_hba *phba)
3730 {
3731         struct Scsi_Host  *shost;
3732         struct lpfc_vport **vports;
3733         int i;
3734
3735         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
3736                 return;
3737
3738         /* stop port and all timers associated with this hba */
3739         lpfc_stop_port(phba);
3740
3741         /* Tear down the local and target port registrations.  The
3742          * nvme transports need to cleanup.
3743          */
3744         lpfc_nvmet_destroy_targetport(phba);
3745         lpfc_nvme_destroy_localport(phba->pport);
3746
3747         vports = lpfc_create_vport_work_array(phba);
3748         if (vports != NULL)
3749                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3750                         lpfc_stop_vport_timers(vports[i]);
3751         lpfc_destroy_vport_work_array(phba, vports);
3752         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3753                         "0460 Bring Adapter offline\n");
3754         /* Bring down the SLI Layer and cleanup.  The HBA is offline
3755            now.  */
3756         lpfc_sli_hba_down(phba);
3757         spin_lock_irq(&phba->hbalock);
3758         phba->work_ha = 0;
3759         spin_unlock_irq(&phba->hbalock);
3760         vports = lpfc_create_vport_work_array(phba);
3761         if (vports != NULL)
3762                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3763                         shost = lpfc_shost_from_vport(vports[i]);
3764                         spin_lock_irq(shost->host_lock);
3765                         vports[i]->work_port_events = 0;
3766                         vports[i]->fc_flag |= FC_OFFLINE_MODE;
3767                         spin_unlock_irq(shost->host_lock);
3768                 }
3769         lpfc_destroy_vport_work_array(phba, vports);
3770         /* If OFFLINE flag is clear (i.e. unloading), cpuhp removal is handled
3771          * in hba_unset
3772          */
3773         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
3774                 __lpfc_cpuhp_remove(phba);
3775
3776         if (phba->cfg_xri_rebalancing)
3777                 lpfc_destroy_multixri_pools(phba);
3778 }
3779
3780 /**
3781  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
3782  * @phba: pointer to lpfc hba data structure.
3783  *
3784  * This routine is to free all the SCSI buffers and IOCBs from the driver
3785  * list back to kernel. It is called from lpfc_pci_remove_one to free
3786  * the internal resources before the device is removed from the system.
3787  **/
3788 static void
3789 lpfc_scsi_free(struct lpfc_hba *phba)
3790 {
3791         struct lpfc_io_buf *sb, *sb_next;
3792
3793         if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
3794                 return;
3795
3796         spin_lock_irq(&phba->hbalock);
3797
3798         /* Release all the lpfc_scsi_bufs maintained by this host. */
3799
3800         spin_lock(&phba->scsi_buf_list_put_lock);
3801         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put,
3802                                  list) {
3803                 list_del(&sb->list);
3804                 dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3805                               sb->dma_handle);
3806                 kfree(sb);
3807                 phba->total_scsi_bufs--;
3808         }
3809         spin_unlock(&phba->scsi_buf_list_put_lock);
3810
3811         spin_lock(&phba->scsi_buf_list_get_lock);
3812         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get,
3813                                  list) {
3814                 list_del(&sb->list);
3815                 dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3816                               sb->dma_handle);
3817                 kfree(sb);
3818                 phba->total_scsi_bufs--;
3819         }
3820         spin_unlock(&phba->scsi_buf_list_get_lock);
3821         spin_unlock_irq(&phba->hbalock);
3822 }
3823
3824 /**
3825  * lpfc_io_free - Free all the IO buffers and IOCBs from driver lists
3826  * @phba: pointer to lpfc hba data structure.
3827  *
3828  * This routine is to free all the IO buffers and IOCBs from the driver
3829  * list back to kernel. It is called from lpfc_pci_remove_one to free
3830  * the internal resources before the device is removed from the system.
3831  **/
3832 void
3833 lpfc_io_free(struct lpfc_hba *phba)
3834 {
3835         struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
3836         struct lpfc_sli4_hdw_queue *qp;
3837         int idx;
3838
3839         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3840                 qp = &phba->sli4_hba.hdwq[idx];
3841                 /* Release all the lpfc_nvme_bufs maintained by this host. */
3842                 spin_lock(&qp->io_buf_list_put_lock);
3843                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3844                                          &qp->lpfc_io_buf_list_put,
3845                                          list) {
3846                         list_del(&lpfc_ncmd->list);
3847                         qp->put_io_bufs--;
3848                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3849                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3850                         if (phba->cfg_xpsgl && !phba->nvmet_support)
3851                                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3852                         lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3853                         kfree(lpfc_ncmd);
3854                         qp->total_io_bufs--;
3855                 }
3856                 spin_unlock(&qp->io_buf_list_put_lock);
3857
3858                 spin_lock(&qp->io_buf_list_get_lock);
3859                 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3860                                          &qp->lpfc_io_buf_list_get,
3861                                          list) {
3862                         list_del(&lpfc_ncmd->list);
3863                         qp->get_io_bufs--;
3864                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3865                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3866                         if (phba->cfg_xpsgl && !phba->nvmet_support)
3867                                 lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3868                         lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3869                         kfree(lpfc_ncmd);
3870                         qp->total_io_bufs--;
3871                 }
3872                 spin_unlock(&qp->io_buf_list_get_lock);
3873         }
3874 }
3875
3876 /**
3877  * lpfc_sli4_els_sgl_update - update ELS xri-sgl sizing and mapping
3878  * @phba: pointer to lpfc hba data structure.
3879  *
3880  * This routine first calculates the sizes of the current els and allocated
3881  * scsi sgl lists, and then goes through all sgls to updates the physical
3882  * XRIs assigned due to port function reset. During port initialization, the
3883  * current els and allocated scsi sgl lists are 0s.
3884  *
3885  * Return codes
3886  *   0 - successful (for now, it always returns 0)
3887  **/
3888 int
3889 lpfc_sli4_els_sgl_update(struct lpfc_hba *phba)
3890 {
3891         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3892         uint16_t i, lxri, xri_cnt, els_xri_cnt;
3893         LIST_HEAD(els_sgl_list);
3894         int rc;
3895
3896         /*
3897          * update on pci function's els xri-sgl list
3898          */
3899         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3900
3901         if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {
3902                 /* els xri-sgl expanded */
3903                 xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;
3904                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3905                                 "3157 ELS xri-sgl count increased from "
3906                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
3907                                 els_xri_cnt);
3908                 /* allocate the additional els sgls */
3909                 for (i = 0; i < xri_cnt; i++) {
3910                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3911                                              GFP_KERNEL);
3912                         if (sglq_entry == NULL) {
3913                                 lpfc_printf_log(phba, KERN_ERR,
3914                                                 LOG_TRACE_EVENT,
3915                                                 "2562 Failure to allocate an "
3916                                                 "ELS sgl entry:%d\n", i);
3917                                 rc = -ENOMEM;
3918                                 goto out_free_mem;
3919                         }
3920                         sglq_entry->buff_type = GEN_BUFF_TYPE;
3921                         sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,
3922                                                            &sglq_entry->phys);
3923                         if (sglq_entry->virt == NULL) {
3924                                 kfree(sglq_entry);
3925                                 lpfc_printf_log(phba, KERN_ERR,
3926                                                 LOG_TRACE_EVENT,
3927                                                 "2563 Failure to allocate an "
3928                                                 "ELS mbuf:%d\n", i);
3929                                 rc = -ENOMEM;
3930                                 goto out_free_mem;
3931                         }
3932                         sglq_entry->sgl = sglq_entry->virt;
3933                         memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
3934                         sglq_entry->state = SGL_FREED;
3935                         list_add_tail(&sglq_entry->list, &els_sgl_list);
3936                 }
3937                 spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
3938                 list_splice_init(&els_sgl_list,
3939                                  &phba->sli4_hba.lpfc_els_sgl_list);
3940                 spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
3941         } else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {
3942                 /* els xri-sgl shrinked */
3943                 xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;
3944                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3945                                 "3158 ELS xri-sgl count decreased from "
3946                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
3947                                 els_xri_cnt);
3948                 spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
3949                 list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list,
3950                                  &els_sgl_list);
3951                 /* release extra els sgls from list */
3952                 for (i = 0; i < xri_cnt; i++) {
3953                         list_remove_head(&els_sgl_list,
3954                                          sglq_entry, struct lpfc_sglq, list);
3955                         if (sglq_entry) {
3956                                 __lpfc_mbuf_free(phba, sglq_entry->virt,
3957                                                  sglq_entry->phys);
3958                                 kfree(sglq_entry);
3959                         }
3960                 }
3961                 list_splice_init(&els_sgl_list,
3962                                  &phba->sli4_hba.lpfc_els_sgl_list);
3963                 spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
3964         } else
3965                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3966                                 "3163 ELS xri-sgl count unchanged: %d\n",
3967                                 els_xri_cnt);
3968         phba->sli4_hba.els_xri_cnt = els_xri_cnt;
3969
3970         /* update xris to els sgls on the list */
3971         sglq_entry = NULL;
3972         sglq_entry_next = NULL;
3973         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3974                                  &phba->sli4_hba.lpfc_els_sgl_list, list) {
3975                 lxri = lpfc_sli4_next_xritag(phba);
3976                 if (lxri == NO_XRI) {
3977                         lpfc_printf_log(phba, KERN_ERR,
3978                                         LOG_TRACE_EVENT,
3979                                         "2400 Failed to allocate xri for "
3980                                         "ELS sgl\n");
3981                         rc = -ENOMEM;
3982                         goto out_free_mem;
3983                 }
3984                 sglq_entry->sli4_lxritag = lxri;
3985                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3986         }
3987         return 0;
3988
3989 out_free_mem:
3990         lpfc_free_els_sgl_list(phba);
3991         return rc;
3992 }
3993
3994 /**
3995  * lpfc_sli4_nvmet_sgl_update - update xri-sgl sizing and mapping
3996  * @phba: pointer to lpfc hba data structure.
3997  *
3998  * This routine first calculates the sizes of the current els and allocated
3999  * scsi sgl lists, and then goes through all sgls to updates the physical
4000  * XRIs assigned due to port function reset. During port initialization, the
4001  * current els and allocated scsi sgl lists are 0s.
4002  *
4003  * Return codes
4004  *   0 - successful (for now, it always returns 0)
4005  **/
4006 int
4007 lpfc_sli4_nvmet_sgl_update(struct lpfc_hba *phba)
4008 {
4009         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
4010         uint16_t i, lxri, xri_cnt, els_xri_cnt;
4011         uint16_t nvmet_xri_cnt;
4012         LIST_HEAD(nvmet_sgl_list);
4013         int rc;
4014
4015         /*
4016          * update on pci function's nvmet xri-sgl list
4017          */
4018         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4019
4020         /* For NVMET, ALL remaining XRIs are dedicated for IO processing */
4021         nvmet_xri_cnt = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4022         if (nvmet_xri_cnt > phba->sli4_hba.nvmet_xri_cnt) {
4023                 /* els xri-sgl expanded */
4024                 xri_cnt = nvmet_xri_cnt - phba->sli4_hba.nvmet_xri_cnt;
4025                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4026                                 "6302 NVMET xri-sgl cnt grew from %d to %d\n",
4027                                 phba->sli4_hba.nvmet_xri_cnt, nvmet_xri_cnt);
4028                 /* allocate the additional nvmet sgls */
4029                 for (i = 0; i < xri_cnt; i++) {
4030                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
4031                                              GFP_KERNEL);
4032                         if (sglq_entry == NULL) {
4033                                 lpfc_printf_log(phba, KERN_ERR,
4034                                                 LOG_TRACE_EVENT,
4035                                                 "6303 Failure to allocate an "
4036                                                 "NVMET sgl entry:%d\n", i);
4037                                 rc = -ENOMEM;
4038                                 goto out_free_mem;
4039                         }
4040                         sglq_entry->buff_type = NVMET_BUFF_TYPE;
4041                         sglq_entry->virt = lpfc_nvmet_buf_alloc(phba, 0,
4042                                                            &sglq_entry->phys);
4043                         if (sglq_entry->virt == NULL) {
4044                                 kfree(sglq_entry);
4045                                 lpfc_printf_log(phba, KERN_ERR,
4046                                                 LOG_TRACE_EVENT,
4047                                                 "6304 Failure to allocate an "
4048                                                 "NVMET buf:%d\n", i);
4049                                 rc = -ENOMEM;
4050                                 goto out_free_mem;
4051                         }
4052                         sglq_entry->sgl = sglq_entry->virt;
4053                         memset(sglq_entry->sgl, 0,
4054                                phba->cfg_sg_dma_buf_size);
4055                         sglq_entry->state = SGL_FREED;
4056                         list_add_tail(&sglq_entry->list, &nvmet_sgl_list);
4057                 }
4058                 spin_lock_irq(&phba->hbalock);
4059                 spin_lock(&phba->sli4_hba.sgl_list_lock);
4060                 list_splice_init(&nvmet_sgl_list,
4061                                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
4062                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
4063                 spin_unlock_irq(&phba->hbalock);
4064         } else if (nvmet_xri_cnt < phba->sli4_hba.nvmet_xri_cnt) {
4065                 /* nvmet xri-sgl shrunk */
4066                 xri_cnt = phba->sli4_hba.nvmet_xri_cnt - nvmet_xri_cnt;
4067                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4068                                 "6305 NVMET xri-sgl count decreased from "
4069                                 "%d to %d\n", phba->sli4_hba.nvmet_xri_cnt,
4070                                 nvmet_xri_cnt);
4071                 spin_lock_irq(&phba->hbalock);
4072                 spin_lock(&phba->sli4_hba.sgl_list_lock);
4073                 list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list,
4074                                  &nvmet_sgl_list);
4075                 /* release extra nvmet sgls from list */
4076                 for (i = 0; i < xri_cnt; i++) {
4077                         list_remove_head(&nvmet_sgl_list,
4078                                          sglq_entry, struct lpfc_sglq, list);
4079                         if (sglq_entry) {
4080                                 lpfc_nvmet_buf_free(phba, sglq_entry->virt,
4081                                                     sglq_entry->phys);
4082                                 kfree(sglq_entry);
4083                         }
4084                 }
4085                 list_splice_init(&nvmet_sgl_list,
4086                                  &phba->sli4_hba.lpfc_nvmet_sgl_list);
4087                 spin_unlock(&phba->sli4_hba.sgl_list_lock);
4088                 spin_unlock_irq(&phba->hbalock);
4089         } else
4090                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4091                                 "6306 NVMET xri-sgl count unchanged: %d\n",
4092                                 nvmet_xri_cnt);
4093         phba->sli4_hba.nvmet_xri_cnt = nvmet_xri_cnt;
4094
4095         /* update xris to nvmet sgls on the list */
4096         sglq_entry = NULL;
4097         sglq_entry_next = NULL;
4098         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
4099                                  &phba->sli4_hba.lpfc_nvmet_sgl_list, list) {
4100                 lxri = lpfc_sli4_next_xritag(phba);
4101                 if (lxri == NO_XRI) {
4102                         lpfc_printf_log(phba, KERN_ERR,
4103                                         LOG_TRACE_EVENT,
4104                                         "6307 Failed to allocate xri for "
4105                                         "NVMET sgl\n");
4106                         rc = -ENOMEM;
4107                         goto out_free_mem;
4108                 }
4109                 sglq_entry->sli4_lxritag = lxri;
4110                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4111         }
4112         return 0;
4113
4114 out_free_mem:
4115         lpfc_free_nvmet_sgl_list(phba);
4116         return rc;
4117 }
4118
4119 int
4120 lpfc_io_buf_flush(struct lpfc_hba *phba, struct list_head *cbuf)
4121 {
4122         LIST_HEAD(blist);
4123         struct lpfc_sli4_hdw_queue *qp;
4124         struct lpfc_io_buf *lpfc_cmd;
4125         struct lpfc_io_buf *iobufp, *prev_iobufp;
4126         int idx, cnt, xri, inserted;
4127
4128         cnt = 0;
4129         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
4130                 qp = &phba->sli4_hba.hdwq[idx];
4131                 spin_lock_irq(&qp->io_buf_list_get_lock);
4132                 spin_lock(&qp->io_buf_list_put_lock);
4133
4134                 /* Take everything off the get and put lists */
4135                 list_splice_init(&qp->lpfc_io_buf_list_get, &blist);
4136                 list_splice(&qp->lpfc_io_buf_list_put, &blist);
4137                 INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
4138                 INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
4139                 cnt += qp->get_io_bufs + qp->put_io_bufs;
4140                 qp->get_io_bufs = 0;
4141                 qp->put_io_bufs = 0;
4142                 qp->total_io_bufs = 0;
4143                 spin_unlock(&qp->io_buf_list_put_lock);
4144                 spin_unlock_irq(&qp->io_buf_list_get_lock);
4145         }
4146
4147         /*
4148          * Take IO buffers off blist and put on cbuf sorted by XRI.
4149          * This is because POST_SGL takes a sequential range of XRIs
4150          * to post to the firmware.
4151          */
4152         for (idx = 0; idx < cnt; idx++) {
4153                 list_remove_head(&blist, lpfc_cmd, struct lpfc_io_buf, list);
4154                 if (!lpfc_cmd)
4155                         return cnt;
4156                 if (idx == 0) {
4157                         list_add_tail(&lpfc_cmd->list, cbuf);
4158                         continue;
4159                 }
4160                 xri = lpfc_cmd->cur_iocbq.sli4_xritag;
4161                 inserted = 0;
4162                 prev_iobufp = NULL;
4163                 list_for_each_entry(iobufp, cbuf, list) {
4164                         if (xri < iobufp->cur_iocbq.sli4_xritag) {
4165                                 if (prev_iobufp)
4166                                         list_add(&lpfc_cmd->list,
4167                                                  &prev_iobufp->list);
4168                                 else
4169                                         list_add(&lpfc_cmd->list, cbuf);
4170                                 inserted = 1;
4171                                 break;
4172                         }
4173                         prev_iobufp = iobufp;
4174                 }
4175                 if (!inserted)
4176                         list_add_tail(&lpfc_cmd->list, cbuf);
4177         }
4178         return cnt;
4179 }
4180
4181 int
4182 lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf)
4183 {
4184         struct lpfc_sli4_hdw_queue *qp;
4185         struct lpfc_io_buf *lpfc_cmd;
4186         int idx, cnt;
4187
4188         qp = phba->sli4_hba.hdwq;
4189         cnt = 0;
4190         while (!list_empty(cbuf)) {
4191                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
4192                         list_remove_head(cbuf, lpfc_cmd,
4193                                          struct lpfc_io_buf, list);
4194                         if (!lpfc_cmd)
4195                                 return cnt;
4196                         cnt++;
4197                         qp = &phba->sli4_hba.hdwq[idx];
4198                         lpfc_cmd->hdwq_no = idx;
4199                         lpfc_cmd->hdwq = qp;
4200                         lpfc_cmd->cur_iocbq.wqe_cmpl = NULL;
4201                         lpfc_cmd->cur_iocbq.iocb_cmpl = NULL;
4202                         spin_lock(&qp->io_buf_list_put_lock);
4203                         list_add_tail(&lpfc_cmd->list,
4204                                       &qp->lpfc_io_buf_list_put);
4205                         qp->put_io_bufs++;
4206                         qp->total_io_bufs++;
4207                         spin_unlock(&qp->io_buf_list_put_lock);
4208                 }
4209         }
4210         return cnt;
4211 }
4212
4213 /**
4214  * lpfc_sli4_io_sgl_update - update xri-sgl sizing and mapping
4215  * @phba: pointer to lpfc hba data structure.
4216  *
4217  * This routine first calculates the sizes of the current els and allocated
4218  * scsi sgl lists, and then goes through all sgls to updates the physical
4219  * XRIs assigned due to port function reset. During port initialization, the
4220  * current els and allocated scsi sgl lists are 0s.
4221  *
4222  * Return codes
4223  *   0 - successful (for now, it always returns 0)
4224  **/
4225 int
4226 lpfc_sli4_io_sgl_update(struct lpfc_hba *phba)
4227 {
4228         struct lpfc_io_buf *lpfc_ncmd = NULL, *lpfc_ncmd_next = NULL;
4229         uint16_t i, lxri, els_xri_cnt;
4230         uint16_t io_xri_cnt, io_xri_max;
4231         LIST_HEAD(io_sgl_list);
4232         int rc, cnt;
4233
4234         /*
4235          * update on pci function's allocated nvme xri-sgl list
4236          */
4237
4238         /* maximum number of xris available for nvme buffers */
4239         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4240         io_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4241         phba->sli4_hba.io_xri_max = io_xri_max;
4242
4243         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4244                         "6074 Current allocated XRI sgl count:%d, "
4245                         "maximum XRI count:%d\n",
4246                         phba->sli4_hba.io_xri_cnt,
4247                         phba->sli4_hba.io_xri_max);
4248
4249         cnt = lpfc_io_buf_flush(phba, &io_sgl_list);
4250
4251         if (phba->sli4_hba.io_xri_cnt > phba->sli4_hba.io_xri_max) {
4252                 /* max nvme xri shrunk below the allocated nvme buffers */
4253                 io_xri_cnt = phba->sli4_hba.io_xri_cnt -
4254                                         phba->sli4_hba.io_xri_max;
4255                 /* release the extra allocated nvme buffers */
4256                 for (i = 0; i < io_xri_cnt; i++) {
4257                         list_remove_head(&io_sgl_list, lpfc_ncmd,
4258                                          struct lpfc_io_buf, list);
4259                         if (lpfc_ncmd) {
4260                                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4261                                               lpfc_ncmd->data,
4262                                               lpfc_ncmd->dma_handle);
4263                                 kfree(lpfc_ncmd);
4264                         }
4265                 }
4266                 phba->sli4_hba.io_xri_cnt -= io_xri_cnt;
4267         }
4268
4269         /* update xris associated to remaining allocated nvme buffers */
4270         lpfc_ncmd = NULL;
4271         lpfc_ncmd_next = NULL;
4272         phba->sli4_hba.io_xri_cnt = cnt;
4273         list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
4274                                  &io_sgl_list, list) {
4275                 lxri = lpfc_sli4_next_xritag(phba);
4276                 if (lxri == NO_XRI) {
4277                         lpfc_printf_log(phba, KERN_ERR,
4278                                         LOG_TRACE_EVENT,
4279                                         "6075 Failed to allocate xri for "
4280                                         "nvme buffer\n");
4281                         rc = -ENOMEM;
4282                         goto out_free_mem;
4283                 }
4284                 lpfc_ncmd->cur_iocbq.sli4_lxritag = lxri;
4285                 lpfc_ncmd->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4286         }
4287         cnt = lpfc_io_buf_replenish(phba, &io_sgl_list);
4288         return 0;
4289
4290 out_free_mem:
4291         lpfc_io_free(phba);
4292         return rc;
4293 }
4294
4295 /**
4296  * lpfc_new_io_buf - IO buffer allocator for HBA with SLI4 IF spec
4297  * @phba: Pointer to lpfc hba data structure.
4298  * @num_to_alloc: The requested number of buffers to allocate.
4299  *
4300  * This routine allocates nvme buffers for device with SLI-4 interface spec,
4301  * the nvme buffer contains all the necessary information needed to initiate
4302  * an I/O. After allocating up to @num_to_allocate IO buffers and put
4303  * them on a list, it post them to the port by using SGL block post.
4304  *
4305  * Return codes:
4306  *   int - number of IO buffers that were allocated and posted.
4307  *   0 = failure, less than num_to_alloc is a partial failure.
4308  **/
4309 int
4310 lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc)
4311 {
4312         struct lpfc_io_buf *lpfc_ncmd;
4313         struct lpfc_iocbq *pwqeq;
4314         uint16_t iotag, lxri = 0;
4315         int bcnt, num_posted;
4316         LIST_HEAD(prep_nblist);
4317         LIST_HEAD(post_nblist);
4318         LIST_HEAD(nvme_nblist);
4319
4320         phba->sli4_hba.io_xri_cnt = 0;
4321         for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
4322                 lpfc_ncmd = kzalloc(sizeof(*lpfc_ncmd), GFP_KERNEL);
4323                 if (!lpfc_ncmd)
4324                         break;
4325                 /*
4326                  * Get memory from the pci pool to map the virt space to
4327                  * pci bus space for an I/O. The DMA buffer includes the
4328                  * number of SGE's necessary to support the sg_tablesize.
4329                  */
4330                 lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
4331                                                   GFP_KERNEL,
4332                                                   &lpfc_ncmd->dma_handle);
4333                 if (!lpfc_ncmd->data) {
4334                         kfree(lpfc_ncmd);
4335                         break;
4336                 }
4337
4338                 if (phba->cfg_xpsgl && !phba->nvmet_support) {
4339                         INIT_LIST_HEAD(&lpfc_ncmd->dma_sgl_xtra_list);
4340                 } else {
4341                         /*
4342                          * 4K Page alignment is CRITICAL to BlockGuard, double
4343                          * check to be sure.
4344                          */
4345                         if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
4346                             (((unsigned long)(lpfc_ncmd->data) &
4347                             (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
4348                                 lpfc_printf_log(phba, KERN_ERR,
4349                                                 LOG_TRACE_EVENT,
4350                                                 "3369 Memory alignment err: "
4351                                                 "addr=%lx\n",
4352                                                 (unsigned long)lpfc_ncmd->data);
4353                                 dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4354                                               lpfc_ncmd->data,
4355                                               lpfc_ncmd->dma_handle);
4356                                 kfree(lpfc_ncmd);
4357                                 break;
4358                         }
4359                 }
4360
4361                 INIT_LIST_HEAD(&lpfc_ncmd->dma_cmd_rsp_list);
4362
4363                 lxri = lpfc_sli4_next_xritag(phba);
4364                 if (lxri == NO_XRI) {
4365                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4366                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4367                         kfree(lpfc_ncmd);
4368                         break;
4369                 }
4370                 pwqeq = &lpfc_ncmd->cur_iocbq;
4371
4372                 /* Allocate iotag for lpfc_ncmd->cur_iocbq. */
4373                 iotag = lpfc_sli_next_iotag(phba, pwqeq);
4374                 if (iotag == 0) {
4375                         dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4376                                       lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4377                         kfree(lpfc_ncmd);
4378                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4379                                         "6121 Failed to allocate IOTAG for"
4380                                         " XRI:0x%x\n", lxri);
4381                         lpfc_sli4_free_xri(phba, lxri);
4382                         break;
4383                 }
4384                 pwqeq->sli4_lxritag = lxri;
4385                 pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4386                 pwqeq->context1 = lpfc_ncmd;
4387
4388                 /* Initialize local short-hand pointers. */
4389                 lpfc_ncmd->dma_sgl = lpfc_ncmd->data;
4390                 lpfc_ncmd->dma_phys_sgl = lpfc_ncmd->dma_handle;
4391                 lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd;
4392                 spin_lock_init(&lpfc_ncmd->buf_lock);
4393
4394                 /* add the nvme buffer to a post list */
4395                 list_add_tail(&lpfc_ncmd->list, &post_nblist);
4396                 phba->sli4_hba.io_xri_cnt++;
4397         }
4398         lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
4399                         "6114 Allocate %d out of %d requested new NVME "
4400                         "buffers\n", bcnt, num_to_alloc);
4401
4402         /* post the list of nvme buffer sgls to port if available */
4403         if (!list_empty(&post_nblist))
4404                 num_posted = lpfc_sli4_post_io_sgl_list(
4405                                 phba, &post_nblist, bcnt);
4406         else
4407                 num_posted = 0;
4408
4409         return num_posted;
4410 }
4411
4412 static uint64_t
4413 lpfc_get_wwpn(struct lpfc_hba *phba)
4414 {
4415         uint64_t wwn;
4416         int rc;
4417         LPFC_MBOXQ_t *mboxq;
4418         MAILBOX_t *mb;
4419
4420         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4421                                                 GFP_KERNEL);
4422         if (!mboxq)
4423                 return (uint64_t)-1;
4424
4425         /* First get WWN of HBA instance */
4426         lpfc_read_nv(phba, mboxq);
4427         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4428         if (rc != MBX_SUCCESS) {
4429                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4430                                 "6019 Mailbox failed , mbxCmd x%x "
4431                                 "READ_NV, mbxStatus x%x\n",
4432                                 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
4433                                 bf_get(lpfc_mqe_status, &mboxq->u.mqe));
4434                 mempool_free(mboxq, phba->mbox_mem_pool);
4435                 return (uint64_t) -1;
4436         }
4437         mb = &mboxq->u.mb;
4438         memcpy(&wwn, (char *)mb->un.varRDnvp.portname, sizeof(uint64_t));
4439         /* wwn is WWPN of HBA instance */
4440         mempool_free(mboxq, phba->mbox_mem_pool);
4441         if (phba->sli_rev == LPFC_SLI_REV4)
4442                 return be64_to_cpu(wwn);
4443         else
4444                 return rol64(wwn, 32);
4445 }
4446
4447 /**
4448  * lpfc_vmid_res_alloc - Allocates resources for VMID
4449  * @phba: pointer to lpfc hba data structure.
4450  * @vport: pointer to vport data structure
4451  *
4452  * This routine allocated the resources needed for the VMID.
4453  *
4454  * Return codes
4455  *      0 on Success
4456  *      Non-0 on Failure
4457  */
4458 static int
4459 lpfc_vmid_res_alloc(struct lpfc_hba *phba, struct lpfc_vport *vport)
4460 {
4461         /* VMID feature is supported only on SLI4 */
4462         if (phba->sli_rev == LPFC_SLI_REV3) {
4463                 phba->cfg_vmid_app_header = 0;
4464                 phba->cfg_vmid_priority_tagging = 0;
4465         }
4466
4467         if (lpfc_is_vmid_enabled(phba)) {
4468                 vport->vmid =
4469                     kcalloc(phba->cfg_max_vmid, sizeof(struct lpfc_vmid),
4470                             GFP_KERNEL);
4471                 if (!vport->vmid)
4472                         return -ENOMEM;
4473
4474                 rwlock_init(&vport->vmid_lock);
4475
4476                 /* Set the VMID parameters for the vport */
4477                 vport->vmid_priority_tagging = phba->cfg_vmid_priority_tagging;
4478                 vport->vmid_inactivity_timeout =
4479                     phba->cfg_vmid_inactivity_timeout;
4480                 vport->max_vmid = phba->cfg_max_vmid;
4481                 vport->cur_vmid_cnt = 0;
4482
4483                 vport->vmid_priority_range = bitmap_zalloc
4484                         (LPFC_VMID_MAX_PRIORITY_RANGE, GFP_KERNEL);
4485
4486                 if (!vport->vmid_priority_range) {
4487                         kfree(vport->vmid);
4488                         return -ENOMEM;
4489                 }
4490
4491                 hash_init(vport->hash_table);
4492         }
4493         return 0;
4494 }
4495
4496 /**
4497  * lpfc_create_port - Create an FC port
4498  * @phba: pointer to lpfc hba data structure.
4499  * @instance: a unique integer ID to this FC port.
4500  * @dev: pointer to the device data structure.
4501  *
4502  * This routine creates a FC port for the upper layer protocol. The FC port
4503  * can be created on top of either a physical port or a virtual port provided
4504  * by the HBA. This routine also allocates a SCSI host data structure (shost)
4505  * and associates the FC port created before adding the shost into the SCSI
4506  * layer.
4507  *
4508  * Return codes
4509  *   @vport - pointer to the virtual N_Port data structure.
4510  *   NULL - port create failed.
4511  **/
4512 struct lpfc_vport *
4513 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
4514 {
4515         struct lpfc_vport *vport;
4516         struct Scsi_Host  *shost = NULL;
4517         struct scsi_host_template *template;
4518         int error = 0;
4519         int i;
4520         uint64_t wwn;
4521         bool use_no_reset_hba = false;
4522         int rc;
4523
4524         if (lpfc_no_hba_reset_cnt) {
4525                 if (phba->sli_rev < LPFC_SLI_REV4 &&
4526                     dev == &phba->pcidev->dev) {
4527                         /* Reset the port first */
4528                         lpfc_sli_brdrestart(phba);
4529                         rc = lpfc_sli_chipset_init(phba);
4530                         if (rc)
4531                                 return NULL;
4532                 }
4533                 wwn = lpfc_get_wwpn(phba);
4534         }
4535
4536         for (i = 0; i < lpfc_no_hba_reset_cnt; i++) {
4537                 if (wwn == lpfc_no_hba_reset[i]) {
4538                         lpfc_printf_log(phba, KERN_ERR,
4539                                         LOG_TRACE_EVENT,
4540                                         "6020 Setting use_no_reset port=%llx\n",
4541                                         wwn);
4542                         use_no_reset_hba = true;
4543                         break;
4544                 }
4545         }
4546
4547         /* Seed template for SCSI host registration */
4548         if (dev == &phba->pcidev->dev) {
4549                 template = &phba->port_template;
4550
4551                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
4552                         /* Seed physical port template */
4553                         memcpy(template, &lpfc_template, sizeof(*template));
4554
4555                         if (use_no_reset_hba)
4556                                 /* template is for a no reset SCSI Host */
4557                                 template->eh_host_reset_handler = NULL;
4558
4559                         /* Template for all vports this physical port creates */
4560                         memcpy(&phba->vport_template, &lpfc_template,
4561                                sizeof(*template));
4562                         phba->vport_template.shost_attrs = lpfc_vport_attrs;
4563                         phba->vport_template.eh_bus_reset_handler = NULL;
4564                         phba->vport_template.eh_host_reset_handler = NULL;
4565                         phba->vport_template.vendor_id = 0;
4566
4567                         /* Initialize the host templates with updated value */
4568                         if (phba->sli_rev == LPFC_SLI_REV4) {
4569                                 template->sg_tablesize = phba->cfg_scsi_seg_cnt;
4570                                 phba->vport_template.sg_tablesize =
4571                                         phba->cfg_scsi_seg_cnt;
4572                         } else {
4573                                 template->sg_tablesize = phba->cfg_sg_seg_cnt;
4574                                 phba->vport_template.sg_tablesize =
4575                                         phba->cfg_sg_seg_cnt;
4576                         }
4577
4578                 } else {
4579                         /* NVMET is for physical port only */
4580                         memcpy(template, &lpfc_template_nvme,
4581                                sizeof(*template));
4582                 }
4583         } else {
4584                 template = &phba->vport_template;
4585         }
4586
4587         shost = scsi_host_alloc(template, sizeof(struct lpfc_vport));
4588         if (!shost)
4589                 goto out;
4590
4591         vport = (struct lpfc_vport *) shost->hostdata;
4592         vport->phba = phba;
4593         vport->load_flag |= FC_LOADING;
4594         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
4595         vport->fc_rscn_flush = 0;
4596         lpfc_get_vport_cfgparam(vport);
4597
4598         /* Adjust value in vport */
4599         vport->cfg_enable_fc4_type = phba->cfg_enable_fc4_type;
4600
4601         shost->unique_id = instance;
4602         shost->max_id = LPFC_MAX_TARGET;
4603         shost->max_lun = vport->cfg_max_luns;
4604         shost->this_id = -1;
4605         shost->max_cmd_len = 16;
4606
4607         if (phba->sli_rev == LPFC_SLI_REV4) {
4608                 if (!phba->cfg_fcp_mq_threshold ||
4609                     phba->cfg_fcp_mq_threshold > phba->cfg_hdw_queue)
4610                         phba->cfg_fcp_mq_threshold = phba->cfg_hdw_queue;
4611
4612                 shost->nr_hw_queues = min_t(int, 2 * num_possible_nodes(),
4613                                             phba->cfg_fcp_mq_threshold);
4614
4615                 shost->dma_boundary =
4616                         phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
4617
4618                 if (phba->cfg_xpsgl && !phba->nvmet_support)
4619                         shost->sg_tablesize = LPFC_MAX_SG_TABLESIZE;
4620                 else
4621                         shost->sg_tablesize = phba->cfg_scsi_seg_cnt;
4622         } else
4623                 /* SLI-3 has a limited number of hardware queues (3),
4624                  * thus there is only one for FCP processing.
4625                  */
4626                 shost->nr_hw_queues = 1;
4627
4628         /*
4629          * Set initial can_queue value since 0 is no longer supported and
4630          * scsi_add_host will fail. This will be adjusted later based on the
4631          * max xri value determined in hba setup.
4632          */
4633         shost->can_queue = phba->cfg_hba_queue_depth - 10;
4634         if (dev != &phba->pcidev->dev) {
4635                 shost->transportt = lpfc_vport_transport_template;
4636                 vport->port_type = LPFC_NPIV_PORT;
4637         } else {
4638                 shost->transportt = lpfc_transport_template;
4639                 vport->port_type = LPFC_PHYSICAL_PORT;
4640         }
4641
4642         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
4643                         "9081 CreatePort TMPLATE type %x TBLsize %d "
4644                         "SEGcnt %d/%d\n",
4645                         vport->port_type, shost->sg_tablesize,
4646                         phba->cfg_scsi_seg_cnt, phba->cfg_sg_seg_cnt);
4647
4648         /* Allocate the resources for VMID */
4649         rc = lpfc_vmid_res_alloc(phba, vport);
4650
4651         if (rc)
4652                 goto out;
4653
4654         /* Initialize all internally managed lists. */
4655         INIT_LIST_HEAD(&vport->fc_nodes);
4656         INIT_LIST_HEAD(&vport->rcv_buffer_list);
4657         spin_lock_init(&vport->work_port_lock);
4658
4659         timer_setup(&vport->fc_disctmo, lpfc_disc_timeout, 0);
4660
4661         timer_setup(&vport->els_tmofunc, lpfc_els_timeout, 0);
4662
4663         timer_setup(&vport->delayed_disc_tmo, lpfc_delayed_disc_tmo, 0);
4664
4665         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
4666                 lpfc_setup_bg(phba, shost);
4667
4668         error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
4669         if (error)
4670                 goto out_put_shost;
4671
4672         spin_lock_irq(&phba->port_list_lock);
4673         list_add_tail(&vport->listentry, &phba->port_list);
4674         spin_unlock_irq(&phba->port_list_lock);
4675         return vport;
4676
4677 out_put_shost:
4678         kfree(vport->vmid);
4679         bitmap_free(vport->vmid_priority_range);
4680         scsi_host_put(shost);
4681 out:
4682         return NULL;
4683 }
4684
4685 /**
4686  * destroy_port -  destroy an FC port
4687  * @vport: pointer to an lpfc virtual N_Port data structure.
4688  *
4689  * This routine destroys a FC port from the upper layer protocol. All the
4690  * resources associated with the port are released.
4691  **/
4692 void
4693 destroy_port(struct lpfc_vport *vport)
4694 {
4695         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4696         struct lpfc_hba  *phba = vport->phba;
4697
4698         lpfc_debugfs_terminate(vport);
4699         fc_remove_host(shost);
4700         scsi_remove_host(shost);
4701
4702         spin_lock_irq(&phba->port_list_lock);
4703         list_del_init(&vport->listentry);
4704         spin_unlock_irq(&phba->port_list_lock);
4705
4706         lpfc_cleanup(vport);
4707         return;
4708 }
4709
4710 /**
4711  * lpfc_get_instance - Get a unique integer ID
4712  *
4713  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
4714  * uses the kernel idr facility to perform the task.
4715  *
4716  * Return codes:
4717  *   instance - a unique integer ID allocated as the new instance.
4718  *   -1 - lpfc get instance failed.
4719  **/
4720 int
4721 lpfc_get_instance(void)
4722 {
4723         int ret;
4724
4725         ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
4726         return ret < 0 ? -1 : ret;
4727 }
4728
4729 /**
4730  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
4731  * @shost: pointer to SCSI host data structure.
4732  * @time: elapsed time of the scan in jiffies.
4733  *
4734  * This routine is called by the SCSI layer with a SCSI host to determine
4735  * whether the scan host is finished.
4736  *
4737  * Note: there is no scan_start function as adapter initialization will have
4738  * asynchronously kicked off the link initialization.
4739  *
4740  * Return codes
4741  *   0 - SCSI host scan is not over yet.
4742  *   1 - SCSI host scan is over.
4743  **/
4744 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
4745 {
4746         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4747         struct lpfc_hba   *phba = vport->phba;
4748         int stat = 0;
4749
4750         spin_lock_irq(shost->host_lock);
4751
4752         if (vport->load_flag & FC_UNLOADING) {
4753                 stat = 1;
4754                 goto finished;
4755         }
4756         if (time >= msecs_to_jiffies(30 * 1000)) {
4757                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4758                                 "0461 Scanning longer than 30 "
4759                                 "seconds.  Continuing initialization\n");
4760                 stat = 1;
4761                 goto finished;
4762         }
4763         if (time >= msecs_to_jiffies(15 * 1000) &&
4764             phba->link_state <= LPFC_LINK_DOWN) {
4765                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4766                                 "0465 Link down longer than 15 "
4767                                 "seconds.  Continuing initialization\n");
4768                 stat = 1;
4769                 goto finished;
4770         }
4771
4772         if (vport->port_state != LPFC_VPORT_READY)
4773                 goto finished;
4774         if (vport->num_disc_nodes || vport->fc_prli_sent)
4775                 goto finished;
4776         if (vport->fc_map_cnt == 0 && time < msecs_to_jiffies(2 * 1000))
4777                 goto finished;
4778         if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
4779                 goto finished;
4780
4781         stat = 1;
4782
4783 finished:
4784         spin_unlock_irq(shost->host_lock);
4785         return stat;
4786 }
4787
4788 static void lpfc_host_supported_speeds_set(struct Scsi_Host *shost)
4789 {
4790         struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4791         struct lpfc_hba   *phba = vport->phba;
4792
4793         fc_host_supported_speeds(shost) = 0;
4794         /*
4795          * Avoid reporting supported link speed for FCoE as it can't be
4796          * controlled via FCoE.
4797          */
4798         if (phba->hba_flag & HBA_FCOE_MODE)
4799                 return;
4800
4801         if (phba->lmt & LMT_256Gb)
4802                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_256GBIT;
4803         if (phba->lmt & LMT_128Gb)
4804                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT;
4805         if (phba->lmt & LMT_64Gb)
4806                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_64GBIT;
4807         if (phba->lmt & LMT_32Gb)
4808                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT;
4809         if (phba->lmt & LMT_16Gb)
4810                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
4811         if (phba->lmt & LMT_10Gb)
4812                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
4813         if (phba->lmt & LMT_8Gb)
4814                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
4815         if (phba->lmt & LMT_4Gb)
4816                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
4817         if (phba->lmt & LMT_2Gb)
4818                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
4819         if (phba->lmt & LMT_1Gb)
4820                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
4821 }
4822
4823 /**
4824  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
4825  * @shost: pointer to SCSI host data structure.
4826  *
4827  * This routine initializes a given SCSI host attributes on a FC port. The
4828  * SCSI host can be either on top of a physical port or a virtual port.
4829  **/
4830 void lpfc_host_attrib_init(struct Scsi_Host *shost)
4831 {
4832         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4833         struct lpfc_hba   *phba = vport->phba;
4834         /*
4835          * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
4836          */
4837
4838         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
4839         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
4840         fc_host_supported_classes(shost) = FC_COS_CLASS3;
4841
4842         memset(fc_host_supported_fc4s(shost), 0,
4843                sizeof(fc_host_supported_fc4s(shost)));
4844         fc_host_supported_fc4s(shost)[2] = 1;
4845         fc_host_supported_fc4s(shost)[7] = 1;
4846
4847         lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
4848                                  sizeof fc_host_symbolic_name(shost));
4849
4850         lpfc_host_supported_speeds_set(shost);
4851
4852         fc_host_maxframe_size(shost) =
4853                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
4854                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
4855
4856         fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
4857
4858         /* This value is also unchanging */
4859         memset(fc_host_active_fc4s(shost), 0,
4860                sizeof(fc_host_active_fc4s(shost)));
4861         fc_host_active_fc4s(shost)[2] = 1;
4862         fc_host_active_fc4s(shost)[7] = 1;
4863
4864         fc_host_max_npiv_vports(shost) = phba->max_vpi;
4865         spin_lock_irq(shost->host_lock);
4866         vport->load_flag &= ~FC_LOADING;
4867         spin_unlock_irq(shost->host_lock);
4868 }
4869
4870 /**
4871  * lpfc_stop_port_s3 - Stop SLI3 device port
4872  * @phba: pointer to lpfc hba data structure.
4873  *
4874  * This routine is invoked to stop an SLI3 device port, it stops the device
4875  * from generating interrupts and stops the device driver's timers for the
4876  * device.
4877  **/
4878 static void
4879 lpfc_stop_port_s3(struct lpfc_hba *phba)
4880 {
4881         /* Clear all interrupt enable conditions */
4882         writel(0, phba->HCregaddr);
4883         readl(phba->HCregaddr); /* flush */
4884         /* Clear all pending interrupts */
4885         writel(0xffffffff, phba->HAregaddr);
4886         readl(phba->HAregaddr); /* flush */
4887
4888         /* Reset some HBA SLI setup states */
4889         lpfc_stop_hba_timers(phba);
4890         phba->pport->work_port_events = 0;
4891 }
4892
4893 /**
4894  * lpfc_stop_port_s4 - Stop SLI4 device port
4895  * @phba: pointer to lpfc hba data structure.
4896  *
4897  * This routine is invoked to stop an SLI4 device port, it stops the device
4898  * from generating interrupts and stops the device driver's timers for the
4899  * device.
4900  **/
4901 static void
4902 lpfc_stop_port_s4(struct lpfc_hba *phba)
4903 {
4904         /* Reset some HBA SLI4 setup states */
4905         lpfc_stop_hba_timers(phba);
4906         if (phba->pport)
4907                 phba->pport->work_port_events = 0;
4908         phba->sli4_hba.intr_enable = 0;
4909 }
4910
4911 /**
4912  * lpfc_stop_port - Wrapper function for stopping hba port
4913  * @phba: Pointer to HBA context object.
4914  *
4915  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
4916  * the API jump table function pointer from the lpfc_hba struct.
4917  **/
4918 void
4919 lpfc_stop_port(struct lpfc_hba *phba)
4920 {
4921         phba->lpfc_stop_port(phba);
4922
4923         if (phba->wq)
4924                 flush_workqueue(phba->wq);
4925 }
4926
4927 /**
4928  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
4929  * @phba: Pointer to hba for which this call is being executed.
4930  *
4931  * This routine starts the timer waiting for the FCF rediscovery to complete.
4932  **/
4933 void
4934 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
4935 {
4936         unsigned long fcf_redisc_wait_tmo =
4937                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
4938         /* Start fcf rediscovery wait period timer */
4939         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
4940         spin_lock_irq(&phba->hbalock);
4941         /* Allow action to new fcf asynchronous event */
4942         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
4943         /* Mark the FCF rediscovery pending state */
4944         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
4945         spin_unlock_irq(&phba->hbalock);
4946 }
4947
4948 /**
4949  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
4950  * @t: Timer context used to obtain the pointer to lpfc hba data structure.
4951  *
4952  * This routine is invoked when waiting for FCF table rediscover has been
4953  * timed out. If new FCF record(s) has (have) been discovered during the
4954  * wait period, a new FCF event shall be added to the FCOE async event
4955  * list, and then worker thread shall be waked up for processing from the
4956  * worker thread context.
4957  **/
4958 static void
4959 lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t)
4960 {
4961         struct lpfc_hba *phba = from_timer(phba, t, fcf.redisc_wait);
4962
4963         /* Don't send FCF rediscovery event if timer cancelled */
4964         spin_lock_irq(&phba->hbalock);
4965         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
4966                 spin_unlock_irq(&phba->hbalock);
4967                 return;
4968         }
4969         /* Clear FCF rediscovery timer pending flag */
4970         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
4971         /* FCF rediscovery event to worker thread */
4972         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
4973         spin_unlock_irq(&phba->hbalock);
4974         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
4975                         "2776 FCF rediscover quiescent timer expired\n");
4976         /* wake up worker thread */
4977         lpfc_worker_wake_up(phba);
4978 }
4979
4980 /**
4981  * lpfc_vmid_poll - VMID timeout detection
4982  * @t: Timer context used to obtain the pointer to lpfc hba data structure.
4983  *
4984  * This routine is invoked when there is no I/O on by a VM for the specified
4985  * amount of time. When this situation is detected, the VMID has to be
4986  * deregistered from the switch and all the local resources freed. The VMID
4987  * will be reassigned to the VM once the I/O begins.
4988  **/
4989 static void
4990 lpfc_vmid_poll(struct timer_list *t)
4991 {
4992         struct lpfc_hba *phba = from_timer(phba, t, inactive_vmid_poll);
4993         u32 wake_up = 0;
4994
4995         /* check if there is a need to issue QFPA */
4996         if (phba->pport->vmid_priority_tagging) {
4997                 wake_up = 1;
4998                 phba->pport->work_port_events |= WORKER_CHECK_VMID_ISSUE_QFPA;
4999         }
5000
5001         /* Is the vmid inactivity timer enabled */
5002         if (phba->pport->vmid_inactivity_timeout ||
5003             phba->pport->load_flag & FC_DEREGISTER_ALL_APP_ID) {
5004                 wake_up = 1;
5005                 phba->pport->work_port_events |= WORKER_CHECK_INACTIVE_VMID;
5006         }
5007
5008         if (wake_up)
5009                 lpfc_worker_wake_up(phba);
5010
5011         /* restart the timer for the next iteration */
5012         mod_timer(&phba->inactive_vmid_poll, jiffies + msecs_to_jiffies(1000 *
5013                                                         LPFC_VMID_TIMER));
5014 }
5015
5016 /**
5017  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
5018  * @phba: pointer to lpfc hba data structure.
5019  * @acqe_link: pointer to the async link completion queue entry.
5020  *
5021  * This routine is to parse the SLI4 link-attention link fault code.
5022  **/
5023 static void
5024 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
5025                            struct lpfc_acqe_link *acqe_link)
5026 {
5027         switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
5028         case LPFC_ASYNC_LINK_FAULT_NONE:
5029         case LPFC_ASYNC_LINK_FAULT_LOCAL:
5030         case LPFC_ASYNC_LINK_FAULT_REMOTE:
5031         case LPFC_ASYNC_LINK_FAULT_LR_LRR:
5032                 break;
5033         default:
5034                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5035                                 "0398 Unknown link fault code: x%x\n",
5036                                 bf_get(lpfc_acqe_link_fault, acqe_link));
5037                 break;
5038         }
5039 }
5040
5041 /**
5042  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
5043  * @phba: pointer to lpfc hba data structure.
5044  * @acqe_link: pointer to the async link completion queue entry.
5045  *
5046  * This routine is to parse the SLI4 link attention type and translate it
5047  * into the base driver's link attention type coding.
5048  *
5049  * Return: Link attention type in terms of base driver's coding.
5050  **/
5051 static uint8_t
5052 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
5053                           struct lpfc_acqe_link *acqe_link)
5054 {
5055         uint8_t att_type;
5056
5057         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
5058         case LPFC_ASYNC_LINK_STATUS_DOWN:
5059         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
5060                 att_type = LPFC_ATT_LINK_DOWN;
5061                 break;
5062         case LPFC_ASYNC_LINK_STATUS_UP:
5063                 /* Ignore physical link up events - wait for logical link up */
5064                 att_type = LPFC_ATT_RESERVED;
5065                 break;
5066         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
5067                 att_type = LPFC_ATT_LINK_UP;
5068                 break;
5069         default:
5070                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5071                                 "0399 Invalid link attention type: x%x\n",
5072                                 bf_get(lpfc_acqe_link_status, acqe_link));
5073                 att_type = LPFC_ATT_RESERVED;
5074                 break;
5075         }
5076         return att_type;
5077 }
5078
5079 /**
5080  * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed
5081  * @phba: pointer to lpfc hba data structure.
5082  *
5083  * This routine is to get an SLI3 FC port's link speed in Mbps.
5084  *
5085  * Return: link speed in terms of Mbps.
5086  **/
5087 uint32_t
5088 lpfc_sli_port_speed_get(struct lpfc_hba *phba)
5089 {
5090         uint32_t link_speed;
5091
5092         if (!lpfc_is_link_up(phba))
5093                 return 0;
5094
5095         if (phba->sli_rev <= LPFC_SLI_REV3) {
5096                 switch (phba->fc_linkspeed) {
5097                 case LPFC_LINK_SPEED_1GHZ:
5098                         link_speed = 1000;
5099                         break;
5100                 case LPFC_LINK_SPEED_2GHZ:
5101                         link_speed = 2000;
5102                         break;
5103                 case LPFC_LINK_SPEED_4GHZ:
5104                         link_speed = 4000;
5105                         break;
5106                 case LPFC_LINK_SPEED_8GHZ:
5107                         link_speed = 8000;
5108                         break;
5109                 case LPFC_LINK_SPEED_10GHZ:
5110                         link_speed = 10000;
5111                         break;
5112                 case LPFC_LINK_SPEED_16GHZ:
5113                         link_speed = 16000;
5114                         break;
5115                 default:
5116                         link_speed = 0;
5117                 }
5118         } else {
5119                 if (phba->sli4_hba.link_state.logical_speed)
5120                         link_speed =
5121                               phba->sli4_hba.link_state.logical_speed;
5122                 else
5123                         link_speed = phba->sli4_hba.link_state.speed;
5124         }
5125         return link_speed;
5126 }
5127
5128 /**
5129  * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed
5130  * @phba: pointer to lpfc hba data structure.
5131  * @evt_code: asynchronous event code.
5132  * @speed_code: asynchronous event link speed code.
5133  *
5134  * This routine is to parse the giving SLI4 async event link speed code into
5135  * value of Mbps for the link speed.
5136  *
5137  * Return: link speed in terms of Mbps.
5138  **/
5139 static uint32_t
5140 lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,
5141                            uint8_t speed_code)
5142 {
5143         uint32_t port_speed;
5144
5145         switch (evt_code) {
5146         case LPFC_TRAILER_CODE_LINK:
5147                 switch (speed_code) {
5148                 case LPFC_ASYNC_LINK_SPEED_ZERO:
5149                         port_speed = 0;
5150                         break;
5151                 case LPFC_ASYNC_LINK_SPEED_10MBPS:
5152                         port_speed = 10;
5153                         break;
5154                 case LPFC_ASYNC_LINK_SPEED_100MBPS:
5155                         port_speed = 100;
5156                         break;
5157                 case LPFC_ASYNC_LINK_SPEED_1GBPS:
5158                         port_speed = 1000;
5159                         break;
5160                 case LPFC_ASYNC_LINK_SPEED_10GBPS:
5161                         port_speed = 10000;
5162                         break;
5163                 case LPFC_ASYNC_LINK_SPEED_20GBPS:
5164                         port_speed = 20000;
5165                         break;
5166                 case LPFC_ASYNC_LINK_SPEED_25GBPS:
5167                         port_speed = 25000;
5168                         break;
5169                 case LPFC_ASYNC_LINK_SPEED_40GBPS:
5170                         port_speed = 40000;
5171                         break;
5172                 case LPFC_ASYNC_LINK_SPEED_100GBPS:
5173                         port_speed = 100000;
5174                         break;
5175                 default:
5176                         port_speed = 0;
5177                 }
5178                 break;
5179         case LPFC_TRAILER_CODE_FC:
5180                 switch (speed_code) {
5181                 case LPFC_FC_LA_SPEED_UNKNOWN:
5182                         port_speed = 0;
5183                         break;
5184                 case LPFC_FC_LA_SPEED_1G:
5185                         port_speed = 1000;
5186                         break;
5187                 case LPFC_FC_LA_SPEED_2G:
5188                         port_speed = 2000;
5189                         break;
5190                 case LPFC_FC_LA_SPEED_4G:
5191                         port_speed = 4000;
5192                         break;
5193                 case LPFC_FC_LA_SPEED_8G:
5194                         port_speed = 8000;
5195                         break;
5196                 case LPFC_FC_LA_SPEED_10G:
5197                         port_speed = 10000;
5198                         break;
5199                 case LPFC_FC_LA_SPEED_16G:
5200                         port_speed = 16000;
5201                         break;
5202                 case LPFC_FC_LA_SPEED_32G:
5203                         port_speed = 32000;
5204                         break;
5205                 case LPFC_FC_LA_SPEED_64G:
5206                         port_speed = 64000;
5207                         break;
5208                 case LPFC_FC_LA_SPEED_128G:
5209                         port_speed = 128000;
5210                         break;
5211                 case LPFC_FC_LA_SPEED_256G:
5212                         port_speed = 256000;
5213                         break;
5214                 default:
5215                         port_speed = 0;
5216                 }
5217                 break;
5218         default:
5219                 port_speed = 0;
5220         }
5221         return port_speed;
5222 }
5223
5224 /**
5225  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
5226  * @phba: pointer to lpfc hba data structure.
5227  * @acqe_link: pointer to the async link completion queue entry.
5228  *
5229  * This routine is to handle the SLI4 asynchronous FCoE link event.
5230  **/
5231 static void
5232 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
5233                          struct lpfc_acqe_link *acqe_link)
5234 {
5235         struct lpfc_dmabuf *mp;
5236         LPFC_MBOXQ_t *pmb;
5237         MAILBOX_t *mb;
5238         struct lpfc_mbx_read_top *la;
5239         uint8_t att_type;
5240         int rc;
5241
5242         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
5243         if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
5244                 return;
5245         phba->fcoe_eventtag = acqe_link->event_tag;
5246         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5247         if (!pmb) {
5248                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5249                                 "0395 The mboxq allocation failed\n");
5250                 return;
5251         }
5252         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5253         if (!mp) {
5254                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5255                                 "0396 The lpfc_dmabuf allocation failed\n");
5256                 goto out_free_pmb;
5257         }
5258         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
5259         if (!mp->virt) {
5260                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5261                                 "0397 The mbuf allocation failed\n");
5262                 goto out_free_dmabuf;
5263         }
5264
5265         /* Cleanup any outstanding ELS commands */
5266         lpfc_els_flush_all_cmd(phba);
5267
5268         /* Block ELS IOCBs until we have done process link event */
5269         phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
5270
5271         /* Update link event statistics */
5272         phba->sli.slistat.link_event++;
5273
5274         /* Create lpfc_handle_latt mailbox command from link ACQE */
5275         lpfc_read_topology(phba, pmb, mp);
5276         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
5277         pmb->vport = phba->pport;
5278
5279         /* Keep the link status for extra SLI4 state machine reference */
5280         phba->sli4_hba.link_state.speed =
5281                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,
5282                                 bf_get(lpfc_acqe_link_speed, acqe_link));
5283         phba->sli4_hba.link_state.duplex =
5284                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
5285         phba->sli4_hba.link_state.status =
5286                                 bf_get(lpfc_acqe_link_status, acqe_link);
5287         phba->sli4_hba.link_state.type =
5288                                 bf_get(lpfc_acqe_link_type, acqe_link);
5289         phba->sli4_hba.link_state.number =
5290                                 bf_get(lpfc_acqe_link_number, acqe_link);
5291         phba->sli4_hba.link_state.fault =
5292                                 bf_get(lpfc_acqe_link_fault, acqe_link);
5293         phba->sli4_hba.link_state.logical_speed =
5294                         bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;
5295
5296         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5297                         "2900 Async FC/FCoE Link event - Speed:%dGBit "
5298                         "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
5299                         "Logical speed:%dMbps Fault:%d\n",
5300                         phba->sli4_hba.link_state.speed,
5301                         phba->sli4_hba.link_state.topology,
5302                         phba->sli4_hba.link_state.status,
5303                         phba->sli4_hba.link_state.type,
5304                         phba->sli4_hba.link_state.number,
5305                         phba->sli4_hba.link_state.logical_speed,
5306                         phba->sli4_hba.link_state.fault);
5307         /*
5308          * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
5309          * topology info. Note: Optional for non FC-AL ports.
5310          */
5311         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
5312                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
5313                 if (rc == MBX_NOT_FINISHED)
5314                         goto out_free_dmabuf;
5315                 return;
5316         }
5317         /*
5318          * For FCoE Mode: fill in all the topology information we need and call
5319          * the READ_TOPOLOGY completion routine to continue without actually
5320          * sending the READ_TOPOLOGY mailbox command to the port.
5321          */
5322         /* Initialize completion status */
5323         mb = &pmb->u.mb;
5324         mb->mbxStatus = MBX_SUCCESS;
5325
5326         /* Parse port fault information field */
5327         lpfc_sli4_parse_latt_fault(phba, acqe_link);
5328
5329         /* Parse and translate link attention fields */
5330         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
5331         la->eventTag = acqe_link->event_tag;
5332         bf_set(lpfc_mbx_read_top_att_type, la, att_type);
5333         bf_set(lpfc_mbx_read_top_link_spd, la,
5334                (bf_get(lpfc_acqe_link_speed, acqe_link)));
5335
5336         /* Fake the the following irrelvant fields */
5337         bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
5338         bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
5339         bf_set(lpfc_mbx_read_top_il, la, 0);
5340         bf_set(lpfc_mbx_read_top_pb, la, 0);
5341         bf_set(lpfc_mbx_read_top_fa, la, 0);
5342         bf_set(lpfc_mbx_read_top_mm, la, 0);
5343
5344         /* Invoke the lpfc_handle_latt mailbox command callback function */
5345         lpfc_mbx_cmpl_read_topology(phba, pmb);
5346
5347         return;
5348
5349 out_free_dmabuf:
5350         kfree(mp);
5351 out_free_pmb:
5352         mempool_free(pmb, phba->mbox_mem_pool);
5353 }
5354
5355 /**
5356  * lpfc_async_link_speed_to_read_top - Parse async evt link speed code to read
5357  * topology.
5358  * @phba: pointer to lpfc hba data structure.
5359  * @speed_code: asynchronous event link speed code.
5360  *
5361  * This routine is to parse the giving SLI4 async event link speed code into
5362  * value of Read topology link speed.
5363  *
5364  * Return: link speed in terms of Read topology.
5365  **/
5366 static uint8_t
5367 lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code)
5368 {
5369         uint8_t port_speed;
5370
5371         switch (speed_code) {
5372         case LPFC_FC_LA_SPEED_1G:
5373                 port_speed = LPFC_LINK_SPEED_1GHZ;
5374                 break;
5375         case LPFC_FC_LA_SPEED_2G:
5376                 port_speed = LPFC_LINK_SPEED_2GHZ;
5377                 break;
5378         case LPFC_FC_LA_SPEED_4G:
5379                 port_speed = LPFC_LINK_SPEED_4GHZ;
5380                 break;
5381         case LPFC_FC_LA_SPEED_8G:
5382                 port_speed = LPFC_LINK_SPEED_8GHZ;
5383                 break;
5384         case LPFC_FC_LA_SPEED_16G:
5385                 port_speed = LPFC_LINK_SPEED_16GHZ;
5386                 break;
5387         case LPFC_FC_LA_SPEED_32G:
5388                 port_speed = LPFC_LINK_SPEED_32GHZ;
5389                 break;
5390         case LPFC_FC_LA_SPEED_64G:
5391                 port_speed = LPFC_LINK_SPEED_64GHZ;
5392                 break;
5393         case LPFC_FC_LA_SPEED_128G:
5394                 port_speed = LPFC_LINK_SPEED_128GHZ;
5395                 break;
5396         case LPFC_FC_LA_SPEED_256G:
5397                 port_speed = LPFC_LINK_SPEED_256GHZ;
5398                 break;
5399         default:
5400                 port_speed = 0;
5401                 break;
5402         }
5403
5404         return port_speed;
5405 }
5406
5407 void
5408 lpfc_cgn_dump_rxmonitor(struct lpfc_hba *phba)
5409 {
5410         struct rxtable_entry *entry;
5411         int cnt = 0, head, tail, last, start;
5412
5413         head = atomic_read(&phba->rxtable_idx_head);
5414         tail = atomic_read(&phba->rxtable_idx_tail);
5415         if (!phba->rxtable || head == tail) {
5416                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT,
5417                                 "4411 Rxtable is empty\n");
5418                 return;
5419         }
5420         last = tail;
5421         start = head;
5422
5423         /* Display the last LPFC_MAX_RXMONITOR_DUMP entries from the rxtable */
5424         while (start != last) {
5425                 if (start)
5426                         start--;
5427                 else
5428                         start = LPFC_MAX_RXMONITOR_ENTRY - 1;
5429                 entry = &phba->rxtable[start];
5430                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5431                                 "4410 %02d: MBPI %lld Xmit %lld Cmpl %lld "
5432                                 "Lat %lld ASz %lld Info %02d BWUtil %d "
5433                                 "Int %d slot %d\n",
5434                                 cnt, entry->max_bytes_per_interval,
5435                                 entry->total_bytes, entry->rcv_bytes,
5436                                 entry->avg_io_latency, entry->avg_io_size,
5437                                 entry->cmf_info, entry->timer_utilization,
5438                                 entry->timer_interval, start);
5439                 cnt++;
5440                 if (cnt >= LPFC_MAX_RXMONITOR_DUMP)
5441                         return;
5442         }
5443 }
5444
5445 /**
5446  * lpfc_cgn_update_stat - Save data into congestion stats buffer
5447  * @phba: pointer to lpfc hba data structure.
5448  * @dtag: FPIN descriptor received
5449  *
5450  * Increment the FPIN received counter/time when it happens.
5451  */
5452 void
5453 lpfc_cgn_update_stat(struct lpfc_hba *phba, uint32_t dtag)
5454 {
5455         struct lpfc_cgn_info *cp;
5456         struct tm broken;
5457         struct timespec64 cur_time;
5458         u32 cnt;
5459         u16 value;
5460
5461         /* Make sure we have a congestion info buffer */
5462         if (!phba->cgn_i)
5463                 return;
5464         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
5465         ktime_get_real_ts64(&cur_time);
5466         time64_to_tm(cur_time.tv_sec, 0, &broken);
5467
5468         /* Update congestion statistics */
5469         switch (dtag) {
5470         case ELS_DTAG_LNK_INTEGRITY:
5471                 cnt = le32_to_cpu(cp->link_integ_notification);
5472                 cnt++;
5473                 cp->link_integ_notification = cpu_to_le32(cnt);
5474
5475                 cp->cgn_stat_lnk_month = broken.tm_mon + 1;
5476                 cp->cgn_stat_lnk_day = broken.tm_mday;
5477                 cp->cgn_stat_lnk_year = broken.tm_year - 100;
5478                 cp->cgn_stat_lnk_hour = broken.tm_hour;
5479                 cp->cgn_stat_lnk_min = broken.tm_min;
5480                 cp->cgn_stat_lnk_sec = broken.tm_sec;
5481                 break;
5482         case ELS_DTAG_DELIVERY:
5483                 cnt = le32_to_cpu(cp->delivery_notification);
5484                 cnt++;
5485                 cp->delivery_notification = cpu_to_le32(cnt);
5486
5487                 cp->cgn_stat_del_month = broken.tm_mon + 1;
5488                 cp->cgn_stat_del_day = broken.tm_mday;
5489                 cp->cgn_stat_del_year = broken.tm_year - 100;
5490                 cp->cgn_stat_del_hour = broken.tm_hour;
5491                 cp->cgn_stat_del_min = broken.tm_min;
5492                 cp->cgn_stat_del_sec = broken.tm_sec;
5493                 break;
5494         case ELS_DTAG_PEER_CONGEST:
5495                 cnt = le32_to_cpu(cp->cgn_peer_notification);
5496                 cnt++;
5497                 cp->cgn_peer_notification = cpu_to_le32(cnt);
5498
5499                 cp->cgn_stat_peer_month = broken.tm_mon + 1;
5500                 cp->cgn_stat_peer_day = broken.tm_mday;
5501                 cp->cgn_stat_peer_year = broken.tm_year - 100;
5502                 cp->cgn_stat_peer_hour = broken.tm_hour;
5503                 cp->cgn_stat_peer_min = broken.tm_min;
5504                 cp->cgn_stat_peer_sec = broken.tm_sec;
5505                 break;
5506         case ELS_DTAG_CONGESTION:
5507                 cnt = le32_to_cpu(cp->cgn_notification);
5508                 cnt++;
5509                 cp->cgn_notification = cpu_to_le32(cnt);
5510
5511                 cp->cgn_stat_cgn_month = broken.tm_mon + 1;
5512                 cp->cgn_stat_cgn_day = broken.tm_mday;
5513                 cp->cgn_stat_cgn_year = broken.tm_year - 100;
5514                 cp->cgn_stat_cgn_hour = broken.tm_hour;
5515                 cp->cgn_stat_cgn_min = broken.tm_min;
5516                 cp->cgn_stat_cgn_sec = broken.tm_sec;
5517         }
5518         if (phba->cgn_fpin_frequency &&
5519             phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {
5520                 value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;
5521                 cp->cgn_stat_npm = value;
5522         }
5523         value = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
5524                                     LPFC_CGN_CRC32_SEED);
5525         cp->cgn_info_crc = cpu_to_le32(value);
5526 }
5527
5528 /**
5529  * lpfc_cgn_save_evt_cnt - Save data into registered congestion buffer
5530  * @phba: pointer to lpfc hba data structure.
5531  *
5532  * Save the congestion event data every minute.
5533  * On the hour collapse all the minute data into hour data. Every day
5534  * collapse all the hour data into daily data. Separate driver
5535  * and fabrc congestion event counters that will be saved out
5536  * to the registered congestion buffer every minute.
5537  */
5538 static void
5539 lpfc_cgn_save_evt_cnt(struct lpfc_hba *phba)
5540 {
5541         struct lpfc_cgn_info *cp;
5542         struct tm broken;
5543         struct timespec64 cur_time;
5544         uint32_t i, index;
5545         uint16_t value, mvalue;
5546         uint64_t bps;
5547         uint32_t mbps;
5548         uint32_t dvalue, wvalue, lvalue, avalue;
5549         uint64_t latsum;
5550         __le16 *ptr;
5551         __le32 *lptr;
5552         __le16 *mptr;
5553
5554         /* Make sure we have a congestion info buffer */
5555         if (!phba->cgn_i)
5556                 return;
5557         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
5558
5559         if (time_before(jiffies, phba->cgn_evt_timestamp))
5560                 return;
5561         phba->cgn_evt_timestamp = jiffies +
5562                         msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN);
5563         phba->cgn_evt_minute++;
5564
5565         /* We should get to this point in the routine on 1 minute intervals */
5566
5567         ktime_get_real_ts64(&cur_time);
5568         time64_to_tm(cur_time.tv_sec, 0, &broken);
5569
5570         if (phba->cgn_fpin_frequency &&
5571             phba->cgn_fpin_frequency != LPFC_FPIN_INIT_FREQ) {
5572                 value = LPFC_CGN_TIMER_TO_MIN / phba->cgn_fpin_frequency;
5573                 cp->cgn_stat_npm = value;
5574         }
5575
5576         /* Read and clear the latency counters for this minute */
5577         lvalue = atomic_read(&phba->cgn_latency_evt_cnt);
5578         latsum = atomic64_read(&phba->cgn_latency_evt);
5579         atomic_set(&phba->cgn_latency_evt_cnt, 0);
5580         atomic64_set(&phba->cgn_latency_evt, 0);
5581
5582         /* We need to store MB/sec bandwidth in the congestion information.
5583          * block_cnt is count of 512 byte blocks for the entire minute,
5584          * bps will get bytes per sec before finally converting to MB/sec.
5585          */
5586         bps = div_u64(phba->rx_block_cnt, LPFC_SEC_MIN) * 512;
5587         phba->rx_block_cnt = 0;
5588         mvalue = bps / (1024 * 1024); /* convert to MB/sec */
5589
5590         /* Every minute */
5591         /* cgn parameters */
5592         cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
5593         cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
5594         cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
5595         cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
5596
5597         /* Fill in default LUN qdepth */
5598         value = (uint16_t)(phba->pport->cfg_lun_queue_depth);
5599         cp->cgn_lunq = cpu_to_le16(value);
5600
5601         /* Record congestion buffer info - every minute
5602          * cgn_driver_evt_cnt (Driver events)
5603          * cgn_fabric_warn_cnt (Congestion Warnings)
5604          * cgn_latency_evt_cnt / cgn_latency_evt (IO Latency)
5605          * cgn_fabric_alarm_cnt (Congestion Alarms)
5606          */
5607         index = ++cp->cgn_index_minute;
5608         if (cp->cgn_index_minute == LPFC_MIN_HOUR) {
5609                 cp->cgn_index_minute = 0;
5610                 index = 0;
5611         }
5612
5613         /* Get the number of driver events in this sample and reset counter */
5614         dvalue = atomic_read(&phba->cgn_driver_evt_cnt);
5615         atomic_set(&phba->cgn_driver_evt_cnt, 0);
5616
5617         /* Get the number of warning events - FPIN and Signal for this minute */
5618         wvalue = 0;
5619         if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN) ||
5620             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
5621             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
5622                 wvalue = atomic_read(&phba->cgn_fabric_warn_cnt);
5623         atomic_set(&phba->cgn_fabric_warn_cnt, 0);
5624
5625         /* Get the number of alarm events - FPIN and Signal for this minute */
5626         avalue = 0;
5627         if ((phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM) ||
5628             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
5629                 avalue = atomic_read(&phba->cgn_fabric_alarm_cnt);
5630         atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
5631
5632         /* Collect the driver, warning, alarm and latency counts for this
5633          * minute into the driver congestion buffer.
5634          */
5635         ptr = &cp->cgn_drvr_min[index];
5636         value = (uint16_t)dvalue;
5637         *ptr = cpu_to_le16(value);
5638
5639         ptr = &cp->cgn_warn_min[index];
5640         value = (uint16_t)wvalue;
5641         *ptr = cpu_to_le16(value);
5642
5643         ptr = &cp->cgn_alarm_min[index];
5644         value = (uint16_t)avalue;
5645         *ptr = cpu_to_le16(value);
5646
5647         lptr = &cp->cgn_latency_min[index];
5648         if (lvalue) {
5649                 lvalue = (uint32_t)div_u64(latsum, lvalue);
5650                 *lptr = cpu_to_le32(lvalue);
5651         } else {
5652                 *lptr = 0;
5653         }
5654
5655         /* Collect the bandwidth value into the driver's congesion buffer. */
5656         mptr = &cp->cgn_bw_min[index];
5657         *mptr = cpu_to_le16(mvalue);
5658
5659         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5660                         "2418 Congestion Info - minute (%d): %d %d %d %d %d\n",
5661                         index, dvalue, wvalue, *lptr, mvalue, avalue);
5662
5663         /* Every hour */
5664         if ((phba->cgn_evt_minute % LPFC_MIN_HOUR) == 0) {
5665                 /* Record congestion buffer info - every hour
5666                  * Collapse all minutes into an hour
5667                  */
5668                 index = ++cp->cgn_index_hour;
5669                 if (cp->cgn_index_hour == LPFC_HOUR_DAY) {
5670                         cp->cgn_index_hour = 0;
5671                         index = 0;
5672                 }
5673
5674                 dvalue = 0;
5675                 wvalue = 0;
5676                 lvalue = 0;
5677                 avalue = 0;
5678                 mvalue = 0;
5679                 mbps = 0;
5680                 for (i = 0; i < LPFC_MIN_HOUR; i++) {
5681                         dvalue += le16_to_cpu(cp->cgn_drvr_min[i]);
5682                         wvalue += le16_to_cpu(cp->cgn_warn_min[i]);
5683                         lvalue += le32_to_cpu(cp->cgn_latency_min[i]);
5684                         mbps += le16_to_cpu(cp->cgn_bw_min[i]);
5685                         avalue += le16_to_cpu(cp->cgn_alarm_min[i]);
5686                 }
5687                 if (lvalue)             /* Avg of latency averages */
5688                         lvalue /= LPFC_MIN_HOUR;
5689                 if (mbps)               /* Avg of Bandwidth averages */
5690                         mvalue = mbps / LPFC_MIN_HOUR;
5691
5692                 lptr = &cp->cgn_drvr_hr[index];
5693                 *lptr = cpu_to_le32(dvalue);
5694                 lptr = &cp->cgn_warn_hr[index];
5695                 *lptr = cpu_to_le32(wvalue);
5696                 lptr = &cp->cgn_latency_hr[index];
5697                 *lptr = cpu_to_le32(lvalue);
5698                 mptr = &cp->cgn_bw_hr[index];
5699                 *mptr = cpu_to_le16(mvalue);
5700                 lptr = &cp->cgn_alarm_hr[index];
5701                 *lptr = cpu_to_le32(avalue);
5702
5703                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5704                                 "2419 Congestion Info - hour "
5705                                 "(%d): %d %d %d %d %d\n",
5706                                 index, dvalue, wvalue, lvalue, mvalue, avalue);
5707         }
5708
5709         /* Every day */
5710         if ((phba->cgn_evt_minute % LPFC_MIN_DAY) == 0) {
5711                 /* Record congestion buffer info - every hour
5712                  * Collapse all hours into a day. Rotate days
5713                  * after LPFC_MAX_CGN_DAYS.
5714                  */
5715                 index = ++cp->cgn_index_day;
5716                 if (cp->cgn_index_day == LPFC_MAX_CGN_DAYS) {
5717                         cp->cgn_index_day = 0;
5718                         index = 0;
5719                 }
5720
5721                 /* Anytime we overwrite daily index 0, after we wrap,
5722                  * we will be overwriting the oldest day, so we must
5723                  * update the congestion data start time for that day.
5724                  * That start time should have previously been saved after
5725                  * we wrote the last days worth of data.
5726                  */
5727                 if ((phba->hba_flag & HBA_CGN_DAY_WRAP) && index == 0) {
5728                         time64_to_tm(phba->cgn_daily_ts.tv_sec, 0, &broken);
5729
5730                         cp->cgn_info_month = broken.tm_mon + 1;
5731                         cp->cgn_info_day = broken.tm_mday;
5732                         cp->cgn_info_year = broken.tm_year - 100;
5733                         cp->cgn_info_hour = broken.tm_hour;
5734                         cp->cgn_info_minute = broken.tm_min;
5735                         cp->cgn_info_second = broken.tm_sec;
5736
5737                         lpfc_printf_log
5738                                 (phba, KERN_INFO, LOG_CGN_MGMT,
5739                                 "2646 CGNInfo idx0 Start Time: "
5740                                 "%d/%d/%d %d:%d:%d\n",
5741                                 cp->cgn_info_day, cp->cgn_info_month,
5742                                 cp->cgn_info_year, cp->cgn_info_hour,
5743                                 cp->cgn_info_minute, cp->cgn_info_second);
5744                 }
5745
5746                 dvalue = 0;
5747                 wvalue = 0;
5748                 lvalue = 0;
5749                 mvalue = 0;
5750                 mbps = 0;
5751                 avalue = 0;
5752                 for (i = 0; i < LPFC_HOUR_DAY; i++) {
5753                         dvalue += le32_to_cpu(cp->cgn_drvr_hr[i]);
5754                         wvalue += le32_to_cpu(cp->cgn_warn_hr[i]);
5755                         lvalue += le32_to_cpu(cp->cgn_latency_hr[i]);
5756                         mbps += le16_to_cpu(cp->cgn_bw_hr[i]);
5757                         avalue += le32_to_cpu(cp->cgn_alarm_hr[i]);
5758                 }
5759                 if (lvalue)             /* Avg of latency averages */
5760                         lvalue /= LPFC_HOUR_DAY;
5761                 if (mbps)               /* Avg of Bandwidth averages */
5762                         mvalue = mbps / LPFC_HOUR_DAY;
5763
5764                 lptr = &cp->cgn_drvr_day[index];
5765                 *lptr = cpu_to_le32(dvalue);
5766                 lptr = &cp->cgn_warn_day[index];
5767                 *lptr = cpu_to_le32(wvalue);
5768                 lptr = &cp->cgn_latency_day[index];
5769                 *lptr = cpu_to_le32(lvalue);
5770                 mptr = &cp->cgn_bw_day[index];
5771                 *mptr = cpu_to_le16(mvalue);
5772                 lptr = &cp->cgn_alarm_day[index];
5773                 *lptr = cpu_to_le32(avalue);
5774
5775                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5776                                 "2420 Congestion Info - daily (%d): "
5777                                 "%d %d %d %d %d\n",
5778                                 index, dvalue, wvalue, lvalue, mvalue, avalue);
5779
5780                 /* We just wrote LPFC_MAX_CGN_DAYS of data,
5781                  * so we are wrapped on any data after this.
5782                  * Save this as the start time for the next day.
5783                  */
5784                 if (index == (LPFC_MAX_CGN_DAYS - 1)) {
5785                         phba->hba_flag |= HBA_CGN_DAY_WRAP;
5786                         ktime_get_real_ts64(&phba->cgn_daily_ts);
5787                 }
5788         }
5789
5790         /* Use the frequency found in the last rcv'ed FPIN */
5791         value = phba->cgn_fpin_frequency;
5792         if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_WARN)
5793                 cp->cgn_warn_freq = cpu_to_le16(value);
5794         if (phba->cgn_reg_fpin & LPFC_CGN_FPIN_ALARM)
5795                 cp->cgn_alarm_freq = cpu_to_le16(value);
5796
5797         /* Frequency (in ms) Signal Warning/Signal Congestion Notifications
5798          * are received by the HBA
5799          */
5800         value = phba->cgn_sig_freq;
5801
5802         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
5803             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
5804                 cp->cgn_warn_freq = cpu_to_le16(value);
5805         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM)
5806                 cp->cgn_alarm_freq = cpu_to_le16(value);
5807
5808         lvalue = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
5809                                      LPFC_CGN_CRC32_SEED);
5810         cp->cgn_info_crc = cpu_to_le32(lvalue);
5811 }
5812
5813 /**
5814  * lpfc_calc_cmf_latency - latency from start of rxate timer interval
5815  * @phba: The Hba for which this call is being executed.
5816  *
5817  * The routine calculates the latency from the beginning of the CMF timer
5818  * interval to the current point in time. It is called from IO completion
5819  * when we exceed our Bandwidth limitation for the time interval.
5820  */
5821 uint32_t
5822 lpfc_calc_cmf_latency(struct lpfc_hba *phba)
5823 {
5824         struct timespec64 cmpl_time;
5825         uint32_t msec = 0;
5826
5827         ktime_get_real_ts64(&cmpl_time);
5828
5829         /* This routine works on a ms granularity so sec and usec are
5830          * converted accordingly.
5831          */
5832         if (cmpl_time.tv_sec == phba->cmf_latency.tv_sec) {
5833                 msec = (cmpl_time.tv_nsec - phba->cmf_latency.tv_nsec) /
5834                         NSEC_PER_MSEC;
5835         } else {
5836                 if (cmpl_time.tv_nsec >= phba->cmf_latency.tv_nsec) {
5837                         msec = (cmpl_time.tv_sec -
5838                                 phba->cmf_latency.tv_sec) * MSEC_PER_SEC;
5839                         msec += ((cmpl_time.tv_nsec -
5840                                   phba->cmf_latency.tv_nsec) / NSEC_PER_MSEC);
5841                 } else {
5842                         msec = (cmpl_time.tv_sec - phba->cmf_latency.tv_sec -
5843                                 1) * MSEC_PER_SEC;
5844                         msec += (((NSEC_PER_SEC - phba->cmf_latency.tv_nsec) +
5845                                  cmpl_time.tv_nsec) / NSEC_PER_MSEC);
5846                 }
5847         }
5848         return msec;
5849 }
5850
5851 /**
5852  * lpfc_cmf_timer -  This is the timer function for one congestion
5853  * rate interval.
5854  * @timer: Pointer to the high resolution timer that expired
5855  */
5856 static enum hrtimer_restart
5857 lpfc_cmf_timer(struct hrtimer *timer)
5858 {
5859         struct lpfc_hba *phba = container_of(timer, struct lpfc_hba,
5860                                              cmf_timer);
5861         struct rxtable_entry *entry;
5862         uint32_t io_cnt;
5863         uint32_t head, tail;
5864         uint32_t busy, max_read;
5865         uint64_t total, rcv, lat, mbpi;
5866         int timer_interval = LPFC_CMF_INTERVAL;
5867         uint32_t ms;
5868         struct lpfc_cgn_stat *cgs;
5869         int cpu;
5870
5871         /* Only restart the timer if congestion mgmt is on */
5872         if (phba->cmf_active_mode == LPFC_CFG_OFF ||
5873             !phba->cmf_latency.tv_sec) {
5874                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
5875                                 "6224 CMF timer exit: %d %lld\n",
5876                                 phba->cmf_active_mode,
5877                                 (uint64_t)phba->cmf_latency.tv_sec);
5878                 return HRTIMER_NORESTART;
5879         }
5880
5881         /* If pport is not ready yet, just exit and wait for
5882          * the next timer cycle to hit.
5883          */
5884         if (!phba->pport)
5885                 goto skip;
5886
5887         /* Do not block SCSI IO while in the timer routine since
5888          * total_bytes will be cleared
5889          */
5890         atomic_set(&phba->cmf_stop_io, 1);
5891
5892         /* First we need to calculate the actual ms between
5893          * the last timer interrupt and this one. We ask for
5894          * LPFC_CMF_INTERVAL, however the actual time may
5895          * vary depending on system overhead.
5896          */
5897         ms = lpfc_calc_cmf_latency(phba);
5898
5899
5900         /* Immediately after we calculate the time since the last
5901          * timer interrupt, set the start time for the next
5902          * interrupt
5903          */
5904         ktime_get_real_ts64(&phba->cmf_latency);
5905
5906         phba->cmf_link_byte_count =
5907                 div_u64(phba->cmf_max_line_rate * LPFC_CMF_INTERVAL, 1000);
5908
5909         /* Collect all the stats from the prior timer interval */
5910         total = 0;
5911         io_cnt = 0;
5912         lat = 0;
5913         rcv = 0;
5914         for_each_present_cpu(cpu) {
5915                 cgs = per_cpu_ptr(phba->cmf_stat, cpu);
5916                 total += atomic64_xchg(&cgs->total_bytes, 0);
5917                 io_cnt += atomic_xchg(&cgs->rx_io_cnt, 0);
5918                 lat += atomic64_xchg(&cgs->rx_latency, 0);
5919                 rcv += atomic64_xchg(&cgs->rcv_bytes, 0);
5920         }
5921
5922         /* Before we issue another CMF_SYNC_WQE, retrieve the BW
5923          * returned from the last CMF_SYNC_WQE issued, from
5924          * cmf_last_sync_bw. This will be the target BW for
5925          * this next timer interval.
5926          */
5927         if (phba->cmf_active_mode == LPFC_CFG_MANAGED &&
5928             phba->link_state != LPFC_LINK_DOWN &&
5929             phba->hba_flag & HBA_SETUP) {
5930                 mbpi = phba->cmf_last_sync_bw;
5931                 phba->cmf_last_sync_bw = 0;
5932                 lpfc_issue_cmf_sync_wqe(phba, LPFC_CMF_INTERVAL, total);
5933         } else {
5934                 /* For Monitor mode or link down we want mbpi
5935                  * to be the full link speed
5936                  */
5937                 mbpi = phba->cmf_link_byte_count;
5938         }
5939         phba->cmf_timer_cnt++;
5940
5941         if (io_cnt) {
5942                 /* Update congestion info buffer latency in us */
5943                 atomic_add(io_cnt, &phba->cgn_latency_evt_cnt);
5944                 atomic64_add(lat, &phba->cgn_latency_evt);
5945         }
5946         busy = atomic_xchg(&phba->cmf_busy, 0);
5947         max_read = atomic_xchg(&phba->rx_max_read_cnt, 0);
5948
5949         /* Calculate MBPI for the next timer interval */
5950         if (mbpi) {
5951                 if (mbpi > phba->cmf_link_byte_count ||
5952                     phba->cmf_active_mode == LPFC_CFG_MONITOR)
5953                         mbpi = phba->cmf_link_byte_count;
5954
5955                 /* Change max_bytes_per_interval to what the prior
5956                  * CMF_SYNC_WQE cmpl indicated.
5957                  */
5958                 if (mbpi != phba->cmf_max_bytes_per_interval)
5959                         phba->cmf_max_bytes_per_interval = mbpi;
5960         }
5961
5962         /* Save rxmonitor information for debug */
5963         if (phba->rxtable) {
5964                 head = atomic_xchg(&phba->rxtable_idx_head,
5965                                    LPFC_RXMONITOR_TABLE_IN_USE);
5966                 entry = &phba->rxtable[head];
5967                 entry->total_bytes = total;
5968                 entry->rcv_bytes = rcv;
5969                 entry->cmf_busy = busy;
5970                 entry->cmf_info = phba->cmf_active_info;
5971                 if (io_cnt) {
5972                         entry->avg_io_latency = div_u64(lat, io_cnt);
5973                         entry->avg_io_size = div_u64(rcv, io_cnt);
5974                 } else {
5975                         entry->avg_io_latency = 0;
5976                         entry->avg_io_size = 0;
5977                 }
5978                 entry->max_read_cnt = max_read;
5979                 entry->io_cnt = io_cnt;
5980                 entry->max_bytes_per_interval = mbpi;
5981                 if (phba->cmf_active_mode == LPFC_CFG_MANAGED)
5982                         entry->timer_utilization = phba->cmf_last_ts;
5983                 else
5984                         entry->timer_utilization = ms;
5985                 entry->timer_interval = ms;
5986                 phba->cmf_last_ts = 0;
5987
5988                 /* Increment rxtable index */
5989                 head = (head + 1) % LPFC_MAX_RXMONITOR_ENTRY;
5990                 tail = atomic_read(&phba->rxtable_idx_tail);
5991                 if (head == tail) {
5992                         tail = (tail + 1) % LPFC_MAX_RXMONITOR_ENTRY;
5993                         atomic_set(&phba->rxtable_idx_tail, tail);
5994                 }
5995                 atomic_set(&phba->rxtable_idx_head, head);
5996         }
5997
5998         if (phba->cmf_active_mode == LPFC_CFG_MONITOR) {
5999                 /* If Monitor mode, check if we are oversubscribed
6000                  * against the full line rate.
6001                  */
6002                 if (mbpi && total > mbpi)
6003                         atomic_inc(&phba->cgn_driver_evt_cnt);
6004         }
6005         phba->rx_block_cnt += div_u64(rcv, 512);  /* save 512 byte block cnt */
6006
6007         /* Each minute save Fabric and Driver congestion information */
6008         lpfc_cgn_save_evt_cnt(phba);
6009
6010         /* Since we need to call lpfc_cgn_save_evt_cnt every minute, on the
6011          * minute, adjust our next timer interval, if needed, to ensure a
6012          * 1 minute granularity when we get the next timer interrupt.
6013          */
6014         if (time_after(jiffies + msecs_to_jiffies(LPFC_CMF_INTERVAL),
6015                        phba->cgn_evt_timestamp)) {
6016                 timer_interval = jiffies_to_msecs(phba->cgn_evt_timestamp -
6017                                                   jiffies);
6018                 if (timer_interval <= 0)
6019                         timer_interval = LPFC_CMF_INTERVAL;
6020
6021                 /* If we adjust timer_interval, max_bytes_per_interval
6022                  * needs to be adjusted as well.
6023                  */
6024                 phba->cmf_link_byte_count = div_u64(phba->cmf_max_line_rate *
6025                                                     timer_interval, 1000);
6026                 if (phba->cmf_active_mode == LPFC_CFG_MONITOR)
6027                         phba->cmf_max_bytes_per_interval =
6028                                 phba->cmf_link_byte_count;
6029         }
6030
6031         /* Since total_bytes has already been zero'ed, its okay to unblock
6032          * after max_bytes_per_interval is setup.
6033          */
6034         if (atomic_xchg(&phba->cmf_bw_wait, 0))
6035                 queue_work(phba->wq, &phba->unblock_request_work);
6036
6037         /* SCSI IO is now unblocked */
6038         atomic_set(&phba->cmf_stop_io, 0);
6039
6040 skip:
6041         hrtimer_forward_now(timer,
6042                             ktime_set(0, timer_interval * NSEC_PER_MSEC));
6043         return HRTIMER_RESTART;
6044 }
6045
6046 #define trunk_link_status(__idx)\
6047         bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
6048                ((phba->trunk_link.link##__idx.state == LPFC_LINK_UP) ?\
6049                 "Link up" : "Link down") : "NA"
6050 /* Did port __idx reported an error */
6051 #define trunk_port_fault(__idx)\
6052         bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
6053                (port_fault & (1 << __idx) ? "YES" : "NO") : "NA"
6054
6055 static void
6056 lpfc_update_trunk_link_status(struct lpfc_hba *phba,
6057                               struct lpfc_acqe_fc_la *acqe_fc)
6058 {
6059         uint8_t port_fault = bf_get(lpfc_acqe_fc_la_trunk_linkmask, acqe_fc);
6060         uint8_t err = bf_get(lpfc_acqe_fc_la_trunk_fault, acqe_fc);
6061
6062         phba->sli4_hba.link_state.speed =
6063                 lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
6064                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
6065
6066         phba->sli4_hba.link_state.logical_speed =
6067                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
6068         /* We got FC link speed, convert to fc_linkspeed (READ_TOPOLOGY) */
6069         phba->fc_linkspeed =
6070                  lpfc_async_link_speed_to_read_top(
6071                                 phba,
6072                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
6073
6074         if (bf_get(lpfc_acqe_fc_la_trunk_config_port0, acqe_fc)) {
6075                 phba->trunk_link.link0.state =
6076                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port0, acqe_fc)
6077                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
6078                 phba->trunk_link.link0.fault = port_fault & 0x1 ? err : 0;
6079         }
6080         if (bf_get(lpfc_acqe_fc_la_trunk_config_port1, acqe_fc)) {
6081                 phba->trunk_link.link1.state =
6082                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port1, acqe_fc)
6083                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
6084                 phba->trunk_link.link1.fault = port_fault & 0x2 ? err : 0;
6085         }
6086         if (bf_get(lpfc_acqe_fc_la_trunk_config_port2, acqe_fc)) {
6087                 phba->trunk_link.link2.state =
6088                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port2, acqe_fc)
6089                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
6090                 phba->trunk_link.link2.fault = port_fault & 0x4 ? err : 0;
6091         }
6092         if (bf_get(lpfc_acqe_fc_la_trunk_config_port3, acqe_fc)) {
6093                 phba->trunk_link.link3.state =
6094                         bf_get(lpfc_acqe_fc_la_trunk_link_status_port3, acqe_fc)
6095                         ? LPFC_LINK_UP : LPFC_LINK_DOWN;
6096                 phba->trunk_link.link3.fault = port_fault & 0x8 ? err : 0;
6097         }
6098
6099         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6100                         "2910 Async FC Trunking Event - Speed:%d\n"
6101                         "\tLogical speed:%d "
6102                         "port0: %s port1: %s port2: %s port3: %s\n",
6103                         phba->sli4_hba.link_state.speed,
6104                         phba->sli4_hba.link_state.logical_speed,
6105                         trunk_link_status(0), trunk_link_status(1),
6106                         trunk_link_status(2), trunk_link_status(3));
6107
6108         if (phba->cmf_active_mode != LPFC_CFG_OFF)
6109                 lpfc_cmf_signal_init(phba);
6110
6111         if (port_fault)
6112                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6113                                 "3202 trunk error:0x%x (%s) seen on port0:%s "
6114                                 /*
6115                                  * SLI-4: We have only 0xA error codes
6116                                  * defined as of now. print an appropriate
6117                                  * message in case driver needs to be updated.
6118                                  */
6119                                 "port1:%s port2:%s port3:%s\n", err, err > 0xA ?
6120                                 "UNDEFINED. update driver." : trunk_errmsg[err],
6121                                 trunk_port_fault(0), trunk_port_fault(1),
6122                                 trunk_port_fault(2), trunk_port_fault(3));
6123 }
6124
6125
6126 /**
6127  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
6128  * @phba: pointer to lpfc hba data structure.
6129  * @acqe_fc: pointer to the async fc completion queue entry.
6130  *
6131  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
6132  * that the event was received and then issue a read_topology mailbox command so
6133  * that the rest of the driver will treat it the same as SLI3.
6134  **/
6135 static void
6136 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
6137 {
6138         struct lpfc_dmabuf *mp;
6139         LPFC_MBOXQ_t *pmb;
6140         MAILBOX_t *mb;
6141         struct lpfc_mbx_read_top *la;
6142         int rc;
6143
6144         if (bf_get(lpfc_trailer_type, acqe_fc) !=
6145             LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
6146                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6147                                 "2895 Non FC link Event detected.(%d)\n",
6148                                 bf_get(lpfc_trailer_type, acqe_fc));
6149                 return;
6150         }
6151
6152         if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
6153             LPFC_FC_LA_TYPE_TRUNKING_EVENT) {
6154                 lpfc_update_trunk_link_status(phba, acqe_fc);
6155                 return;
6156         }
6157
6158         /* Keep the link status for extra SLI4 state machine reference */
6159         phba->sli4_hba.link_state.speed =
6160                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
6161                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
6162         phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
6163         phba->sli4_hba.link_state.topology =
6164                                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
6165         phba->sli4_hba.link_state.status =
6166                                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
6167         phba->sli4_hba.link_state.type =
6168                                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
6169         phba->sli4_hba.link_state.number =
6170                                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
6171         phba->sli4_hba.link_state.fault =
6172                                 bf_get(lpfc_acqe_link_fault, acqe_fc);
6173
6174         if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
6175             LPFC_FC_LA_TYPE_LINK_DOWN)
6176                 phba->sli4_hba.link_state.logical_speed = 0;
6177         else if (!phba->sli4_hba.conf_trunk)
6178                 phba->sli4_hba.link_state.logical_speed =
6179                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
6180
6181         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6182                         "2896 Async FC event - Speed:%dGBaud Topology:x%x "
6183                         "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
6184                         "%dMbps Fault:%d\n",
6185                         phba->sli4_hba.link_state.speed,
6186                         phba->sli4_hba.link_state.topology,
6187                         phba->sli4_hba.link_state.status,
6188                         phba->sli4_hba.link_state.type,
6189                         phba->sli4_hba.link_state.number,
6190                         phba->sli4_hba.link_state.logical_speed,
6191                         phba->sli4_hba.link_state.fault);
6192         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6193         if (!pmb) {
6194                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6195                                 "2897 The mboxq allocation failed\n");
6196                 return;
6197         }
6198         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
6199         if (!mp) {
6200                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6201                                 "2898 The lpfc_dmabuf allocation failed\n");
6202                 goto out_free_pmb;
6203         }
6204         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
6205         if (!mp->virt) {
6206                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6207                                 "2899 The mbuf allocation failed\n");
6208                 goto out_free_dmabuf;
6209         }
6210
6211         /* Cleanup any outstanding ELS commands */
6212         lpfc_els_flush_all_cmd(phba);
6213
6214         /* Block ELS IOCBs until we have done process link event */
6215         phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
6216
6217         /* Update link event statistics */
6218         phba->sli.slistat.link_event++;
6219
6220         /* Create lpfc_handle_latt mailbox command from link ACQE */
6221         lpfc_read_topology(phba, pmb, mp);
6222         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
6223         pmb->vport = phba->pport;
6224
6225         if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {
6226                 phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);
6227
6228                 switch (phba->sli4_hba.link_state.status) {
6229                 case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:
6230                         phba->link_flag |= LS_MDS_LINK_DOWN;
6231                         break;
6232                 case LPFC_FC_LA_TYPE_MDS_LOOPBACK:
6233                         phba->link_flag |= LS_MDS_LOOPBACK;
6234                         break;
6235                 default:
6236                         break;
6237                 }
6238
6239                 /* Initialize completion status */
6240                 mb = &pmb->u.mb;
6241                 mb->mbxStatus = MBX_SUCCESS;
6242
6243                 /* Parse port fault information field */
6244                 lpfc_sli4_parse_latt_fault(phba, (void *)acqe_fc);
6245
6246                 /* Parse and translate link attention fields */
6247                 la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;
6248                 la->eventTag = acqe_fc->event_tag;
6249
6250                 if (phba->sli4_hba.link_state.status ==
6251                     LPFC_FC_LA_TYPE_UNEXP_WWPN) {
6252                         bf_set(lpfc_mbx_read_top_att_type, la,
6253                                LPFC_FC_LA_TYPE_UNEXP_WWPN);
6254                 } else {
6255                         bf_set(lpfc_mbx_read_top_att_type, la,
6256                                LPFC_FC_LA_TYPE_LINK_DOWN);
6257                 }
6258                 /* Invoke the mailbox command callback function */
6259                 lpfc_mbx_cmpl_read_topology(phba, pmb);
6260
6261                 return;
6262         }
6263
6264         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
6265         if (rc == MBX_NOT_FINISHED)
6266                 goto out_free_dmabuf;
6267         return;
6268
6269 out_free_dmabuf:
6270         kfree(mp);
6271 out_free_pmb:
6272         mempool_free(pmb, phba->mbox_mem_pool);
6273 }
6274
6275 /**
6276  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
6277  * @phba: pointer to lpfc hba data structure.
6278  * @acqe_sli: pointer to the async SLI completion queue entry.
6279  *
6280  * This routine is to handle the SLI4 asynchronous SLI events.
6281  **/
6282 static void
6283 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
6284 {
6285         char port_name;
6286         char message[128];
6287         uint8_t status;
6288         uint8_t evt_type;
6289         uint8_t operational = 0;
6290         struct temp_event temp_event_data;
6291         struct lpfc_acqe_misconfigured_event *misconfigured;
6292         struct lpfc_acqe_cgn_signal *cgn_signal;
6293         struct Scsi_Host  *shost;
6294         struct lpfc_vport **vports;
6295         int rc, i, cnt;
6296
6297         evt_type = bf_get(lpfc_trailer_type, acqe_sli);
6298
6299         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6300                         "2901 Async SLI event - Type:%d, Event Data: x%08x "
6301                         "x%08x x%08x x%08x\n", evt_type,
6302                         acqe_sli->event_data1, acqe_sli->event_data2,
6303                         acqe_sli->reserved, acqe_sli->trailer);
6304
6305         port_name = phba->Port[0];
6306         if (port_name == 0x00)
6307                 port_name = '?'; /* get port name is empty */
6308
6309         switch (evt_type) {
6310         case LPFC_SLI_EVENT_TYPE_OVER_TEMP:
6311                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
6312                 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
6313                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
6314
6315                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
6316                                 "3190 Over Temperature:%d Celsius- Port Name %c\n",
6317                                 acqe_sli->event_data1, port_name);
6318
6319                 phba->sfp_warning |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
6320                 shost = lpfc_shost_from_vport(phba->pport);
6321                 fc_host_post_vendor_event(shost, fc_get_event_number(),
6322                                           sizeof(temp_event_data),
6323                                           (char *)&temp_event_data,
6324                                           SCSI_NL_VID_TYPE_PCI
6325                                           | PCI_VENDOR_ID_EMULEX);
6326                 break;
6327         case LPFC_SLI_EVENT_TYPE_NORM_TEMP:
6328                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
6329                 temp_event_data.event_code = LPFC_NORMAL_TEMP;
6330                 temp_event_data.data = (uint32_t)acqe_sli->event_data1;
6331
6332                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6333                                 "3191 Normal Temperature:%d Celsius - Port Name %c\n",
6334                                 acqe_sli->event_data1, port_name);
6335
6336                 shost = lpfc_shost_from_vport(phba->pport);
6337                 fc_host_post_vendor_event(shost, fc_get_event_number(),
6338                                           sizeof(temp_event_data),
6339                                           (char *)&temp_event_data,
6340                                           SCSI_NL_VID_TYPE_PCI
6341                                           | PCI_VENDOR_ID_EMULEX);
6342                 break;
6343         case LPFC_SLI_EVENT_TYPE_MISCONFIGURED:
6344                 misconfigured = (struct lpfc_acqe_misconfigured_event *)
6345                                         &acqe_sli->event_data1;
6346
6347                 /* fetch the status for this port */
6348                 switch (phba->sli4_hba.lnk_info.lnk_no) {
6349                 case LPFC_LINK_NUMBER_0:
6350                         status = bf_get(lpfc_sli_misconfigured_port0_state,
6351                                         &misconfigured->theEvent);
6352                         operational = bf_get(lpfc_sli_misconfigured_port0_op,
6353                                         &misconfigured->theEvent);
6354                         break;
6355                 case LPFC_LINK_NUMBER_1:
6356                         status = bf_get(lpfc_sli_misconfigured_port1_state,
6357                                         &misconfigured->theEvent);
6358                         operational = bf_get(lpfc_sli_misconfigured_port1_op,
6359                                         &misconfigured->theEvent);
6360                         break;
6361                 case LPFC_LINK_NUMBER_2:
6362                         status = bf_get(lpfc_sli_misconfigured_port2_state,
6363                                         &misconfigured->theEvent);
6364                         operational = bf_get(lpfc_sli_misconfigured_port2_op,
6365                                         &misconfigured->theEvent);
6366                         break;
6367                 case LPFC_LINK_NUMBER_3:
6368                         status = bf_get(lpfc_sli_misconfigured_port3_state,
6369                                         &misconfigured->theEvent);
6370                         operational = bf_get(lpfc_sli_misconfigured_port3_op,
6371                                         &misconfigured->theEvent);
6372                         break;
6373                 default:
6374                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6375                                         "3296 "
6376                                         "LPFC_SLI_EVENT_TYPE_MISCONFIGURED "
6377                                         "event: Invalid link %d",
6378                                         phba->sli4_hba.lnk_info.lnk_no);
6379                         return;
6380                 }
6381
6382                 /* Skip if optic state unchanged */
6383                 if (phba->sli4_hba.lnk_info.optic_state == status)
6384                         return;
6385
6386                 switch (status) {
6387                 case LPFC_SLI_EVENT_STATUS_VALID:
6388                         sprintf(message, "Physical Link is functional");
6389                         break;
6390                 case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:
6391                         sprintf(message, "Optics faulted/incorrectly "
6392                                 "installed/not installed - Reseat optics, "
6393                                 "if issue not resolved, replace.");
6394                         break;
6395                 case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:
6396                         sprintf(message,
6397                                 "Optics of two types installed - Remove one "
6398                                 "optic or install matching pair of optics.");
6399                         break;
6400                 case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:
6401                         sprintf(message, "Incompatible optics - Replace with "
6402                                 "compatible optics for card to function.");
6403                         break;
6404                 case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:
6405                         sprintf(message, "Unqualified optics - Replace with "
6406                                 "Avago optics for Warranty and Technical "
6407                                 "Support - Link is%s operational",
6408                                 (operational) ? " not" : "");
6409                         break;
6410                 case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:
6411                         sprintf(message, "Uncertified optics - Replace with "
6412                                 "Avago-certified optics to enable link "
6413                                 "operation - Link is%s operational",
6414                                 (operational) ? " not" : "");
6415                         break;
6416                 default:
6417                         /* firmware is reporting a status we don't know about */
6418                         sprintf(message, "Unknown event status x%02x", status);
6419                         break;
6420                 }
6421
6422                 /* Issue READ_CONFIG mbox command to refresh supported speeds */
6423                 rc = lpfc_sli4_read_config(phba);
6424                 if (rc) {
6425                         phba->lmt = 0;
6426                         lpfc_printf_log(phba, KERN_ERR,
6427                                         LOG_TRACE_EVENT,
6428                                         "3194 Unable to retrieve supported "
6429                                         "speeds, rc = 0x%x\n", rc);
6430                 }
6431                 vports = lpfc_create_vport_work_array(phba);
6432                 if (vports != NULL) {
6433                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
6434                                         i++) {
6435                                 shost = lpfc_shost_from_vport(vports[i]);
6436                                 lpfc_host_supported_speeds_set(shost);
6437                         }
6438                 }
6439                 lpfc_destroy_vport_work_array(phba, vports);
6440
6441                 phba->sli4_hba.lnk_info.optic_state = status;
6442                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6443                                 "3176 Port Name %c %s\n", port_name, message);
6444                 break;
6445         case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:
6446                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6447                                 "3192 Remote DPort Test Initiated - "
6448                                 "Event Data1:x%08x Event Data2: x%08x\n",
6449                                 acqe_sli->event_data1, acqe_sli->event_data2);
6450                 break;
6451         case LPFC_SLI_EVENT_TYPE_PORT_PARAMS_CHG:
6452                 /* Call FW to obtain active parms */
6453                 lpfc_sli4_cgn_parm_chg_evt(phba);
6454                 break;
6455         case LPFC_SLI_EVENT_TYPE_MISCONF_FAWWN:
6456                 /* Misconfigured WWN. Reports that the SLI Port is configured
6457                  * to use FA-WWN, but the attached device doesn’t support it.
6458                  * No driver action is required.
6459                  * Event Data1 - N.A, Event Data2 - N.A
6460                  */
6461                 lpfc_log_msg(phba, KERN_WARNING, LOG_SLI,
6462                              "2699 Misconfigured FA-WWN - Attached device does "
6463                              "not support FA-WWN\n");
6464                 break;
6465         case LPFC_SLI_EVENT_TYPE_EEPROM_FAILURE:
6466                 /* EEPROM failure. No driver action is required */
6467                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
6468                              "2518 EEPROM failure - "
6469                              "Event Data1: x%08x Event Data2: x%08x\n",
6470                              acqe_sli->event_data1, acqe_sli->event_data2);
6471                 break;
6472         case LPFC_SLI_EVENT_TYPE_CGN_SIGNAL:
6473                 if (phba->cmf_active_mode == LPFC_CFG_OFF)
6474                         break;
6475                 cgn_signal = (struct lpfc_acqe_cgn_signal *)
6476                                         &acqe_sli->event_data1;
6477                 phba->cgn_acqe_cnt++;
6478
6479                 cnt = bf_get(lpfc_warn_acqe, cgn_signal);
6480                 atomic64_add(cnt, &phba->cgn_acqe_stat.warn);
6481                 atomic64_add(cgn_signal->alarm_cnt, &phba->cgn_acqe_stat.alarm);
6482
6483                 /* no threshold for CMF, even 1 signal will trigger an event */
6484
6485                 /* Alarm overrides warning, so check that first */
6486                 if (cgn_signal->alarm_cnt) {
6487                         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
6488                                 /* Keep track of alarm cnt for cgn_info */
6489                                 atomic_add(cgn_signal->alarm_cnt,
6490                                            &phba->cgn_fabric_alarm_cnt);
6491                                 /* Keep track of alarm cnt for CMF_SYNC_WQE */
6492                                 atomic_add(cgn_signal->alarm_cnt,
6493                                            &phba->cgn_sync_alarm_cnt);
6494                         }
6495                 } else if (cnt) {
6496                         /* signal action needs to be taken */
6497                         if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
6498                             phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
6499                                 /* Keep track of warning cnt for cgn_info */
6500                                 atomic_add(cnt, &phba->cgn_fabric_warn_cnt);
6501                                 /* Keep track of warning cnt for CMF_SYNC_WQE */
6502                                 atomic_add(cnt, &phba->cgn_sync_warn_cnt);
6503                         }
6504                 }
6505                 break;
6506         default:
6507                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6508                                 "3193 Unrecognized SLI event, type: 0x%x",
6509                                 evt_type);
6510                 break;
6511         }
6512 }
6513
6514 /**
6515  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
6516  * @vport: pointer to vport data structure.
6517  *
6518  * This routine is to perform Clear Virtual Link (CVL) on a vport in
6519  * response to a CVL event.
6520  *
6521  * Return the pointer to the ndlp with the vport if successful, otherwise
6522  * return NULL.
6523  **/
6524 static struct lpfc_nodelist *
6525 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
6526 {
6527         struct lpfc_nodelist *ndlp;
6528         struct Scsi_Host *shost;
6529         struct lpfc_hba *phba;
6530
6531         if (!vport)
6532                 return NULL;
6533         phba = vport->phba;
6534         if (!phba)
6535                 return NULL;
6536         ndlp = lpfc_findnode_did(vport, Fabric_DID);
6537         if (!ndlp) {
6538                 /* Cannot find existing Fabric ndlp, so allocate a new one */
6539                 ndlp = lpfc_nlp_init(vport, Fabric_DID);
6540                 if (!ndlp)
6541                         return 0;
6542                 /* Set the node type */
6543                 ndlp->nlp_type |= NLP_FABRIC;
6544                 /* Put ndlp onto node list */
6545                 lpfc_enqueue_node(vport, ndlp);
6546         }
6547         if ((phba->pport->port_state < LPFC_FLOGI) &&
6548                 (phba->pport->port_state != LPFC_VPORT_FAILED))
6549                 return NULL;
6550         /* If virtual link is not yet instantiated ignore CVL */
6551         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
6552                 && (vport->port_state != LPFC_VPORT_FAILED))
6553                 return NULL;
6554         shost = lpfc_shost_from_vport(vport);
6555         if (!shost)
6556                 return NULL;
6557         lpfc_linkdown_port(vport);
6558         lpfc_cleanup_pending_mbox(vport);
6559         spin_lock_irq(shost->host_lock);
6560         vport->fc_flag |= FC_VPORT_CVL_RCVD;
6561         spin_unlock_irq(shost->host_lock);
6562
6563         return ndlp;
6564 }
6565
6566 /**
6567  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
6568  * @phba: pointer to lpfc hba data structure.
6569  *
6570  * This routine is to perform Clear Virtual Link (CVL) on all vports in
6571  * response to a FCF dead event.
6572  **/
6573 static void
6574 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
6575 {
6576         struct lpfc_vport **vports;
6577         int i;
6578
6579         vports = lpfc_create_vport_work_array(phba);
6580         if (vports)
6581                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
6582                         lpfc_sli4_perform_vport_cvl(vports[i]);
6583         lpfc_destroy_vport_work_array(phba, vports);
6584 }
6585
6586 /**
6587  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
6588  * @phba: pointer to lpfc hba data structure.
6589  * @acqe_fip: pointer to the async fcoe completion queue entry.
6590  *
6591  * This routine is to handle the SLI4 asynchronous fcoe event.
6592  **/
6593 static void
6594 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
6595                         struct lpfc_acqe_fip *acqe_fip)
6596 {
6597         uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
6598         int rc;
6599         struct lpfc_vport *vport;
6600         struct lpfc_nodelist *ndlp;
6601         int active_vlink_present;
6602         struct lpfc_vport **vports;
6603         int i;
6604
6605         phba->fc_eventTag = acqe_fip->event_tag;
6606         phba->fcoe_eventtag = acqe_fip->event_tag;
6607         switch (event_type) {
6608         case LPFC_FIP_EVENT_TYPE_NEW_FCF:
6609         case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
6610                 if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
6611                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6612                                         "2546 New FCF event, evt_tag:x%x, "
6613                                         "index:x%x\n",
6614                                         acqe_fip->event_tag,
6615                                         acqe_fip->index);
6616                 else
6617                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
6618                                         LOG_DISCOVERY,
6619                                         "2788 FCF param modified event, "
6620                                         "evt_tag:x%x, index:x%x\n",
6621                                         acqe_fip->event_tag,
6622                                         acqe_fip->index);
6623                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
6624                         /*
6625                          * During period of FCF discovery, read the FCF
6626                          * table record indexed by the event to update
6627                          * FCF roundrobin failover eligible FCF bmask.
6628                          */
6629                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
6630                                         LOG_DISCOVERY,
6631                                         "2779 Read FCF (x%x) for updating "
6632                                         "roundrobin FCF failover bmask\n",
6633                                         acqe_fip->index);
6634                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
6635                 }
6636
6637                 /* If the FCF discovery is in progress, do nothing. */
6638                 spin_lock_irq(&phba->hbalock);
6639                 if (phba->hba_flag & FCF_TS_INPROG) {
6640                         spin_unlock_irq(&phba->hbalock);
6641                         break;
6642                 }
6643                 /* If fast FCF failover rescan event is pending, do nothing */
6644                 if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) {
6645                         spin_unlock_irq(&phba->hbalock);
6646                         break;
6647                 }
6648
6649                 /* If the FCF has been in discovered state, do nothing. */
6650                 if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
6651                         spin_unlock_irq(&phba->hbalock);
6652                         break;
6653                 }
6654                 spin_unlock_irq(&phba->hbalock);
6655
6656                 /* Otherwise, scan the entire FCF table and re-discover SAN */
6657                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
6658                                 "2770 Start FCF table scan per async FCF "
6659                                 "event, evt_tag:x%x, index:x%x\n",
6660                                 acqe_fip->event_tag, acqe_fip->index);
6661                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
6662                                                      LPFC_FCOE_FCF_GET_FIRST);
6663                 if (rc)
6664                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6665                                         "2547 Issue FCF scan read FCF mailbox "
6666                                         "command failed (x%x)\n", rc);
6667                 break;
6668
6669         case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
6670                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6671                                 "2548 FCF Table full count 0x%x tag 0x%x\n",
6672                                 bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
6673                                 acqe_fip->event_tag);
6674                 break;
6675
6676         case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
6677                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
6678                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6679                                 "2549 FCF (x%x) disconnected from network, "
6680                                  "tag:x%x\n", acqe_fip->index,
6681                                  acqe_fip->event_tag);
6682                 /*
6683                  * If we are in the middle of FCF failover process, clear
6684                  * the corresponding FCF bit in the roundrobin bitmap.
6685                  */
6686                 spin_lock_irq(&phba->hbalock);
6687                 if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
6688                     (phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {
6689                         spin_unlock_irq(&phba->hbalock);
6690                         /* Update FLOGI FCF failover eligible FCF bmask */
6691                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
6692                         break;
6693                 }
6694                 spin_unlock_irq(&phba->hbalock);
6695
6696                 /* If the event is not for currently used fcf do nothing */
6697                 if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
6698                         break;
6699
6700                 /*
6701                  * Otherwise, request the port to rediscover the entire FCF
6702                  * table for a fast recovery from case that the current FCF
6703                  * is no longer valid as we are not in the middle of FCF
6704                  * failover process already.
6705                  */
6706                 spin_lock_irq(&phba->hbalock);
6707                 /* Mark the fast failover process in progress */
6708                 phba->fcf.fcf_flag |= FCF_DEAD_DISC;
6709                 spin_unlock_irq(&phba->hbalock);
6710
6711                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
6712                                 "2771 Start FCF fast failover process due to "
6713                                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
6714                                 "\n", acqe_fip->event_tag, acqe_fip->index);
6715                 rc = lpfc_sli4_redisc_fcf_table(phba);
6716                 if (rc) {
6717                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
6718                                         LOG_TRACE_EVENT,
6719                                         "2772 Issue FCF rediscover mailbox "
6720                                         "command failed, fail through to FCF "
6721                                         "dead event\n");
6722                         spin_lock_irq(&phba->hbalock);
6723                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
6724                         spin_unlock_irq(&phba->hbalock);
6725                         /*
6726                          * Last resort will fail over by treating this
6727                          * as a link down to FCF registration.
6728                          */
6729                         lpfc_sli4_fcf_dead_failthrough(phba);
6730                 } else {
6731                         /* Reset FCF roundrobin bmask for new discovery */
6732                         lpfc_sli4_clear_fcf_rr_bmask(phba);
6733                         /*
6734                          * Handling fast FCF failover to a DEAD FCF event is
6735                          * considered equalivant to receiving CVL to all vports.
6736                          */
6737                         lpfc_sli4_perform_all_vport_cvl(phba);
6738                 }
6739                 break;
6740         case LPFC_FIP_EVENT_TYPE_CVL:
6741                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
6742                 lpfc_printf_log(phba, KERN_ERR,
6743                                 LOG_TRACE_EVENT,
6744                         "2718 Clear Virtual Link Received for VPI 0x%x"
6745                         " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
6746
6747                 vport = lpfc_find_vport_by_vpid(phba,
6748                                                 acqe_fip->index);
6749                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
6750                 if (!ndlp)
6751                         break;
6752                 active_vlink_present = 0;
6753
6754                 vports = lpfc_create_vport_work_array(phba);
6755                 if (vports) {
6756                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
6757                                         i++) {
6758                                 if ((!(vports[i]->fc_flag &
6759                                         FC_VPORT_CVL_RCVD)) &&
6760                                         (vports[i]->port_state > LPFC_FDISC)) {
6761                                         active_vlink_present = 1;
6762                                         break;
6763                                 }
6764                         }
6765                         lpfc_destroy_vport_work_array(phba, vports);
6766                 }
6767
6768                 /*
6769                  * Don't re-instantiate if vport is marked for deletion.
6770                  * If we are here first then vport_delete is going to wait
6771                  * for discovery to complete.
6772                  */
6773                 if (!(vport->load_flag & FC_UNLOADING) &&
6774                                         active_vlink_present) {
6775                         /*
6776                          * If there are other active VLinks present,
6777                          * re-instantiate the Vlink using FDISC.
6778                          */
6779                         mod_timer(&ndlp->nlp_delayfunc,
6780                                   jiffies + msecs_to_jiffies(1000));
6781                         spin_lock_irq(&ndlp->lock);
6782                         ndlp->nlp_flag |= NLP_DELAY_TMO;
6783                         spin_unlock_irq(&ndlp->lock);
6784                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
6785                         vport->port_state = LPFC_FDISC;
6786                 } else {
6787                         /*
6788                          * Otherwise, we request port to rediscover
6789                          * the entire FCF table for a fast recovery
6790                          * from possible case that the current FCF
6791                          * is no longer valid if we are not already
6792                          * in the FCF failover process.
6793                          */
6794                         spin_lock_irq(&phba->hbalock);
6795                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
6796                                 spin_unlock_irq(&phba->hbalock);
6797                                 break;
6798                         }
6799                         /* Mark the fast failover process in progress */
6800                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
6801                         spin_unlock_irq(&phba->hbalock);
6802                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
6803                                         LOG_DISCOVERY,
6804                                         "2773 Start FCF failover per CVL, "
6805                                         "evt_tag:x%x\n", acqe_fip->event_tag);
6806                         rc = lpfc_sli4_redisc_fcf_table(phba);
6807                         if (rc) {
6808                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
6809                                                 LOG_TRACE_EVENT,
6810                                                 "2774 Issue FCF rediscover "
6811                                                 "mailbox command failed, "
6812                                                 "through to CVL event\n");
6813                                 spin_lock_irq(&phba->hbalock);
6814                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
6815                                 spin_unlock_irq(&phba->hbalock);
6816                                 /*
6817                                  * Last resort will be re-try on the
6818                                  * the current registered FCF entry.
6819                                  */
6820                                 lpfc_retry_pport_discovery(phba);
6821                         } else
6822                                 /*
6823                                  * Reset FCF roundrobin bmask for new
6824                                  * discovery.
6825                                  */
6826                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
6827                 }
6828                 break;
6829         default:
6830                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6831                                 "0288 Unknown FCoE event type 0x%x event tag "
6832                                 "0x%x\n", event_type, acqe_fip->event_tag);
6833                 break;
6834         }
6835 }
6836
6837 /**
6838  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
6839  * @phba: pointer to lpfc hba data structure.
6840  * @acqe_dcbx: pointer to the async dcbx completion queue entry.
6841  *
6842  * This routine is to handle the SLI4 asynchronous dcbx event.
6843  **/
6844 static void
6845 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
6846                          struct lpfc_acqe_dcbx *acqe_dcbx)
6847 {
6848         phba->fc_eventTag = acqe_dcbx->event_tag;
6849         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6850                         "0290 The SLI4 DCBX asynchronous event is not "
6851                         "handled yet\n");
6852 }
6853
6854 /**
6855  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
6856  * @phba: pointer to lpfc hba data structure.
6857  * @acqe_grp5: pointer to the async grp5 completion queue entry.
6858  *
6859  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
6860  * is an asynchronous notified of a logical link speed change.  The Port
6861  * reports the logical link speed in units of 10Mbps.
6862  **/
6863 static void
6864 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
6865                          struct lpfc_acqe_grp5 *acqe_grp5)
6866 {
6867         uint16_t prev_ll_spd;
6868
6869         phba->fc_eventTag = acqe_grp5->event_tag;
6870         phba->fcoe_eventtag = acqe_grp5->event_tag;
6871         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
6872         phba->sli4_hba.link_state.logical_speed =
6873                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;
6874         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6875                         "2789 GRP5 Async Event: Updating logical link speed "
6876                         "from %dMbps to %dMbps\n", prev_ll_spd,
6877                         phba->sli4_hba.link_state.logical_speed);
6878 }
6879
6880 /**
6881  * lpfc_sli4_async_cmstat_evt - Process the asynchronous cmstat event
6882  * @phba: pointer to lpfc hba data structure.
6883  *
6884  * This routine is to handle the SLI4 asynchronous cmstat event. A cmstat event
6885  * is an asynchronous notification of a request to reset CM stats.
6886  **/
6887 static void
6888 lpfc_sli4_async_cmstat_evt(struct lpfc_hba *phba)
6889 {
6890         if (!phba->cgn_i)
6891                 return;
6892         lpfc_init_congestion_stat(phba);
6893 }
6894
6895 /**
6896  * lpfc_cgn_params_val - Validate FW congestion parameters.
6897  * @phba: pointer to lpfc hba data structure.
6898  * @p_cfg_param: pointer to FW provided congestion parameters.
6899  *
6900  * This routine validates the congestion parameters passed
6901  * by the FW to the driver via an ACQE event.
6902  **/
6903 static void
6904 lpfc_cgn_params_val(struct lpfc_hba *phba, struct lpfc_cgn_param *p_cfg_param)
6905 {
6906         spin_lock_irq(&phba->hbalock);
6907
6908         if (!lpfc_rangecheck(p_cfg_param->cgn_param_mode, LPFC_CFG_OFF,
6909                              LPFC_CFG_MONITOR)) {
6910                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT,
6911                                 "6225 CMF mode param out of range: %d\n",
6912                                  p_cfg_param->cgn_param_mode);
6913                 p_cfg_param->cgn_param_mode = LPFC_CFG_OFF;
6914         }
6915
6916         spin_unlock_irq(&phba->hbalock);
6917 }
6918
6919 /**
6920  * lpfc_cgn_params_parse - Process a FW cong parm change event
6921  * @phba: pointer to lpfc hba data structure.
6922  * @p_cgn_param: pointer to a data buffer with the FW cong params.
6923  * @len: the size of pdata in bytes.
6924  *
6925  * This routine validates the congestion management buffer signature
6926  * from the FW, validates the contents and makes corrections for
6927  * valid, in-range values.  If the signature magic is correct and
6928  * after parameter validation, the contents are copied to the driver's
6929  * @phba structure. If the magic is incorrect, an error message is
6930  * logged.
6931  **/
6932 static void
6933 lpfc_cgn_params_parse(struct lpfc_hba *phba,
6934                       struct lpfc_cgn_param *p_cgn_param, uint32_t len)
6935 {
6936         struct lpfc_cgn_info *cp;
6937         uint32_t crc, oldmode;
6938
6939         /* Make sure the FW has encoded the correct magic number to
6940          * validate the congestion parameter in FW memory.
6941          */
6942         if (p_cgn_param->cgn_param_magic == LPFC_CFG_PARAM_MAGIC_NUM) {
6943                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
6944                                 "4668 FW cgn parm buffer data: "
6945                                 "magic 0x%x version %d mode %d "
6946                                 "level0 %d level1 %d "
6947                                 "level2 %d byte13 %d "
6948                                 "byte14 %d byte15 %d "
6949                                 "byte11 %d byte12 %d activeMode %d\n",
6950                                 p_cgn_param->cgn_param_magic,
6951                                 p_cgn_param->cgn_param_version,
6952                                 p_cgn_param->cgn_param_mode,
6953                                 p_cgn_param->cgn_param_level0,
6954                                 p_cgn_param->cgn_param_level1,
6955                                 p_cgn_param->cgn_param_level2,
6956                                 p_cgn_param->byte13,
6957                                 p_cgn_param->byte14,
6958                                 p_cgn_param->byte15,
6959                                 p_cgn_param->byte11,
6960                                 p_cgn_param->byte12,
6961                                 phba->cmf_active_mode);
6962
6963                 oldmode = phba->cmf_active_mode;
6964
6965                 /* Any parameters out of range are corrected to defaults
6966                  * by this routine.  No need to fail.
6967                  */
6968                 lpfc_cgn_params_val(phba, p_cgn_param);
6969
6970                 /* Parameters are verified, move them into driver storage */
6971                 spin_lock_irq(&phba->hbalock);
6972                 memcpy(&phba->cgn_p, p_cgn_param,
6973                        sizeof(struct lpfc_cgn_param));
6974
6975                 /* Update parameters in congestion info buffer now */
6976                 if (phba->cgn_i) {
6977                         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
6978                         cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
6979                         cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
6980                         cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
6981                         cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
6982                         crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ,
6983                                                   LPFC_CGN_CRC32_SEED);
6984                         cp->cgn_info_crc = cpu_to_le32(crc);
6985                 }
6986                 spin_unlock_irq(&phba->hbalock);
6987
6988                 phba->cmf_active_mode = phba->cgn_p.cgn_param_mode;
6989
6990                 switch (oldmode) {
6991                 case LPFC_CFG_OFF:
6992                         if (phba->cgn_p.cgn_param_mode != LPFC_CFG_OFF) {
6993                                 /* Turning CMF on */
6994                                 lpfc_cmf_start(phba);
6995
6996                                 if (phba->link_state >= LPFC_LINK_UP) {
6997                                         phba->cgn_reg_fpin =
6998                                                 phba->cgn_init_reg_fpin;
6999                                         phba->cgn_reg_signal =
7000                                                 phba->cgn_init_reg_signal;
7001                                         lpfc_issue_els_edc(phba->pport, 0);
7002                                 }
7003                         }
7004                         break;
7005                 case LPFC_CFG_MANAGED:
7006                         switch (phba->cgn_p.cgn_param_mode) {
7007                         case LPFC_CFG_OFF:
7008                                 /* Turning CMF off */
7009                                 lpfc_cmf_stop(phba);
7010                                 if (phba->link_state >= LPFC_LINK_UP)
7011                                         lpfc_issue_els_edc(phba->pport, 0);
7012                                 break;
7013                         case LPFC_CFG_MONITOR:
7014                                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
7015                                                 "4661 Switch from MANAGED to "
7016                                                 "`MONITOR mode\n");
7017                                 phba->cmf_max_bytes_per_interval =
7018                                         phba->cmf_link_byte_count;
7019
7020                                 /* Resume blocked IO - unblock on workqueue */
7021                                 queue_work(phba->wq,
7022                                            &phba->unblock_request_work);
7023                                 break;
7024                         }
7025                         break;
7026                 case LPFC_CFG_MONITOR:
7027                         switch (phba->cgn_p.cgn_param_mode) {
7028                         case LPFC_CFG_OFF:
7029                                 /* Turning CMF off */
7030                                 lpfc_cmf_stop(phba);
7031                                 if (phba->link_state >= LPFC_LINK_UP)
7032                                         lpfc_issue_els_edc(phba->pport, 0);
7033                                 break;
7034                         case LPFC_CFG_MANAGED:
7035                                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
7036                                                 "4662 Switch from MONITOR to "
7037                                                 "MANAGED mode\n");
7038                                 lpfc_cmf_signal_init(phba);
7039                                 break;
7040                         }
7041                         break;
7042                 }
7043         } else {
7044                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7045                                 "4669 FW cgn parm buf wrong magic 0x%x "
7046                                 "version %d\n", p_cgn_param->cgn_param_magic,
7047                                 p_cgn_param->cgn_param_version);
7048         }
7049 }
7050
7051 /**
7052  * lpfc_sli4_cgn_params_read - Read and Validate FW congestion parameters.
7053  * @phba: pointer to lpfc hba data structure.
7054  *
7055  * This routine issues a read_object mailbox command to
7056  * get the congestion management parameters from the FW
7057  * parses it and updates the driver maintained values.
7058  *
7059  * Returns
7060  *  0     if the object was empty
7061  *  -Eval if an error was encountered
7062  *  Count if bytes were read from object
7063  **/
7064 int
7065 lpfc_sli4_cgn_params_read(struct lpfc_hba *phba)
7066 {
7067         int ret = 0;
7068         struct lpfc_cgn_param *p_cgn_param = NULL;
7069         u32 *pdata = NULL;
7070         u32 len = 0;
7071
7072         /* Find out if the FW has a new set of congestion parameters. */
7073         len = sizeof(struct lpfc_cgn_param);
7074         pdata = kzalloc(len, GFP_KERNEL);
7075         ret = lpfc_read_object(phba, (char *)LPFC_PORT_CFG_NAME,
7076                                pdata, len);
7077
7078         /* 0 means no data.  A negative means error.  A positive means
7079          * bytes were copied.
7080          */
7081         if (!ret) {
7082                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7083                                 "4670 CGN RD OBJ returns no data\n");
7084                 goto rd_obj_err;
7085         } else if (ret < 0) {
7086                 /* Some error.  Just exit and return it to the caller.*/
7087                 goto rd_obj_err;
7088         }
7089
7090         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
7091                         "6234 READ CGN PARAMS Successful %d\n", len);
7092
7093         /* Parse data pointer over len and update the phba congestion
7094          * parameters with values passed back.  The receive rate values
7095          * may have been altered in FW, but take no action here.
7096          */
7097         p_cgn_param = (struct lpfc_cgn_param *)pdata;
7098         lpfc_cgn_params_parse(phba, p_cgn_param, len);
7099
7100  rd_obj_err:
7101         kfree(pdata);
7102         return ret;
7103 }
7104
7105 /**
7106  * lpfc_sli4_cgn_parm_chg_evt - Process a FW congestion param change event
7107  * @phba: pointer to lpfc hba data structure.
7108  *
7109  * The FW generated Async ACQE SLI event calls this routine when
7110  * the event type is an SLI Internal Port Event and the Event Code
7111  * indicates a change to the FW maintained congestion parameters.
7112  *
7113  * This routine executes a Read_Object mailbox call to obtain the
7114  * current congestion parameters maintained in FW and corrects
7115  * the driver's active congestion parameters.
7116  *
7117  * The acqe event is not passed because there is no further data
7118  * required.
7119  *
7120  * Returns nonzero error if event processing encountered an error.
7121  * Zero otherwise for success.
7122  **/
7123 static int
7124 lpfc_sli4_cgn_parm_chg_evt(struct lpfc_hba *phba)
7125 {
7126         int ret = 0;
7127
7128         if (!phba->sli4_hba.pc_sli4_params.cmf) {
7129                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7130                                 "4664 Cgn Evt when E2E off. Drop event\n");
7131                 return -EACCES;
7132         }
7133
7134         /* If the event is claiming an empty object, it's ok.  A write
7135          * could have cleared it.  Only error is a negative return
7136          * status.
7137          */
7138         ret = lpfc_sli4_cgn_params_read(phba);
7139         if (ret < 0) {
7140                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7141                                 "4667 Error reading Cgn Params (%d)\n",
7142                                 ret);
7143         } else if (!ret) {
7144                 lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,
7145                                 "4673 CGN Event empty object.\n");
7146         }
7147         return ret;
7148 }
7149
7150 /**
7151  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
7152  * @phba: pointer to lpfc hba data structure.
7153  *
7154  * This routine is invoked by the worker thread to process all the pending
7155  * SLI4 asynchronous events.
7156  **/
7157 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
7158 {
7159         struct lpfc_cq_event *cq_event;
7160         unsigned long iflags;
7161
7162         /* First, declare the async event has been handled */
7163         spin_lock_irqsave(&phba->hbalock, iflags);
7164         phba->hba_flag &= ~ASYNC_EVENT;
7165         spin_unlock_irqrestore(&phba->hbalock, iflags);
7166
7167         /* Now, handle all the async events */
7168         spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
7169         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
7170                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
7171                                  cq_event, struct lpfc_cq_event, list);
7172                 spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock,
7173                                        iflags);
7174
7175                 /* Process the asynchronous event */
7176                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
7177                 case LPFC_TRAILER_CODE_LINK:
7178                         lpfc_sli4_async_link_evt(phba,
7179                                                  &cq_event->cqe.acqe_link);
7180                         break;
7181                 case LPFC_TRAILER_CODE_FCOE:
7182                         lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
7183                         break;
7184                 case LPFC_TRAILER_CODE_DCBX:
7185                         lpfc_sli4_async_dcbx_evt(phba,
7186                                                  &cq_event->cqe.acqe_dcbx);
7187                         break;
7188                 case LPFC_TRAILER_CODE_GRP5:
7189                         lpfc_sli4_async_grp5_evt(phba,
7190                                                  &cq_event->cqe.acqe_grp5);
7191                         break;
7192                 case LPFC_TRAILER_CODE_FC:
7193                         lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
7194                         break;
7195                 case LPFC_TRAILER_CODE_SLI:
7196                         lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
7197                         break;
7198                 case LPFC_TRAILER_CODE_CMSTAT:
7199                         lpfc_sli4_async_cmstat_evt(phba);
7200                         break;
7201                 default:
7202                         lpfc_printf_log(phba, KERN_ERR,
7203                                         LOG_TRACE_EVENT,
7204                                         "1804 Invalid asynchronous event code: "
7205                                         "x%x\n", bf_get(lpfc_trailer_code,
7206                                         &cq_event->cqe.mcqe_cmpl));
7207                         break;
7208                 }
7209
7210                 /* Free the completion event processed to the free pool */
7211                 lpfc_sli4_cq_event_release(phba, cq_event);
7212                 spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
7213         }
7214         spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
7215 }
7216
7217 /**
7218  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
7219  * @phba: pointer to lpfc hba data structure.
7220  *
7221  * This routine is invoked by the worker thread to process FCF table
7222  * rediscovery pending completion event.
7223  **/
7224 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
7225 {
7226         int rc;
7227
7228         spin_lock_irq(&phba->hbalock);
7229         /* Clear FCF rediscovery timeout event */
7230         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
7231         /* Clear driver fast failover FCF record flag */
7232         phba->fcf.failover_rec.flag = 0;
7233         /* Set state for FCF fast failover */
7234         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
7235         spin_unlock_irq(&phba->hbalock);
7236
7237         /* Scan FCF table from the first entry to re-discover SAN */
7238         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
7239                         "2777 Start post-quiescent FCF table scan\n");
7240         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
7241         if (rc)
7242                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7243                                 "2747 Issue FCF scan read FCF mailbox "
7244                                 "command failed 0x%x\n", rc);
7245 }
7246
7247 /**
7248  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
7249  * @phba: pointer to lpfc hba data structure.
7250  * @dev_grp: The HBA PCI-Device group number.
7251  *
7252  * This routine is invoked to set up the per HBA PCI-Device group function
7253  * API jump table entries.
7254  *
7255  * Return: 0 if success, otherwise -ENODEV
7256  **/
7257 int
7258 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
7259 {
7260         int rc;
7261
7262         /* Set up lpfc PCI-device group */
7263         phba->pci_dev_grp = dev_grp;
7264
7265         /* The LPFC_PCI_DEV_OC uses SLI4 */
7266         if (dev_grp == LPFC_PCI_DEV_OC)
7267                 phba->sli_rev = LPFC_SLI_REV4;
7268
7269         /* Set up device INIT API function jump table */
7270         rc = lpfc_init_api_table_setup(phba, dev_grp);
7271         if (rc)
7272                 return -ENODEV;
7273         /* Set up SCSI API function jump table */
7274         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
7275         if (rc)
7276                 return -ENODEV;
7277         /* Set up SLI API function jump table */
7278         rc = lpfc_sli_api_table_setup(phba, dev_grp);
7279         if (rc)
7280                 return -ENODEV;
7281         /* Set up MBOX API function jump table */
7282         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
7283         if (rc)
7284                 return -ENODEV;
7285
7286         return 0;
7287 }
7288
7289 /**
7290  * lpfc_log_intr_mode - Log the active interrupt mode
7291  * @phba: pointer to lpfc hba data structure.
7292  * @intr_mode: active interrupt mode adopted.
7293  *
7294  * This routine it invoked to log the currently used active interrupt mode
7295  * to the device.
7296  **/
7297 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
7298 {
7299         switch (intr_mode) {
7300         case 0:
7301                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7302                                 "0470 Enable INTx interrupt mode.\n");
7303                 break;
7304         case 1:
7305                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7306                                 "0481 Enabled MSI interrupt mode.\n");
7307                 break;
7308         case 2:
7309                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7310                                 "0480 Enabled MSI-X interrupt mode.\n");
7311                 break;
7312         default:
7313                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7314                                 "0482 Illegal interrupt mode.\n");
7315                 break;
7316         }
7317         return;
7318 }
7319
7320 /**
7321  * lpfc_enable_pci_dev - Enable a generic PCI device.
7322  * @phba: pointer to lpfc hba data structure.
7323  *
7324  * This routine is invoked to enable the PCI device that is common to all
7325  * PCI devices.
7326  *
7327  * Return codes
7328  *      0 - successful
7329  *      other values - error
7330  **/
7331 static int
7332 lpfc_enable_pci_dev(struct lpfc_hba *phba)
7333 {
7334         struct pci_dev *pdev;
7335
7336         /* Obtain PCI device reference */
7337         if (!phba->pcidev)
7338                 goto out_error;
7339         else
7340                 pdev = phba->pcidev;
7341         /* Enable PCI device */
7342         if (pci_enable_device_mem(pdev))
7343                 goto out_error;
7344         /* Request PCI resource for the device */
7345         if (pci_request_mem_regions(pdev, LPFC_DRIVER_NAME))
7346                 goto out_disable_device;
7347         /* Set up device as PCI master and save state for EEH */
7348         pci_set_master(pdev);
7349         pci_try_set_mwi(pdev);
7350         pci_save_state(pdev);
7351
7352         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
7353         if (pci_is_pcie(pdev))
7354                 pdev->needs_freset = 1;
7355
7356         return 0;
7357
7358 out_disable_device:
7359         pci_disable_device(pdev);
7360 out_error:
7361         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7362                         "1401 Failed to enable pci device\n");
7363         return -ENODEV;
7364 }
7365
7366 /**
7367  * lpfc_disable_pci_dev - Disable a generic PCI device.
7368  * @phba: pointer to lpfc hba data structure.
7369  *
7370  * This routine is invoked to disable the PCI device that is common to all
7371  * PCI devices.
7372  **/
7373 static void
7374 lpfc_disable_pci_dev(struct lpfc_hba *phba)
7375 {
7376         struct pci_dev *pdev;
7377
7378         /* Obtain PCI device reference */
7379         if (!phba->pcidev)
7380                 return;
7381         else
7382                 pdev = phba->pcidev;
7383         /* Release PCI resource and disable PCI device */
7384         pci_release_mem_regions(pdev);
7385         pci_disable_device(pdev);
7386
7387         return;
7388 }
7389
7390 /**
7391  * lpfc_reset_hba - Reset a hba
7392  * @phba: pointer to lpfc hba data structure.
7393  *
7394  * This routine is invoked to reset a hba device. It brings the HBA
7395  * offline, performs a board restart, and then brings the board back
7396  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
7397  * on outstanding mailbox commands.
7398  **/
7399 void
7400 lpfc_reset_hba(struct lpfc_hba *phba)
7401 {
7402         /* If resets are disabled then set error state and return. */
7403         if (!phba->cfg_enable_hba_reset) {
7404                 phba->link_state = LPFC_HBA_ERROR;
7405                 return;
7406         }
7407
7408         /* If not LPFC_SLI_ACTIVE, force all IO to be flushed */
7409         if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) {
7410                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
7411         } else {
7412                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
7413                 lpfc_sli_flush_io_rings(phba);
7414         }
7415         lpfc_offline(phba);
7416         lpfc_sli_brdrestart(phba);
7417         lpfc_online(phba);
7418         lpfc_unblock_mgmt_io(phba);
7419 }
7420
7421 /**
7422  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
7423  * @phba: pointer to lpfc hba data structure.
7424  *
7425  * This function enables the PCI SR-IOV virtual functions to a physical
7426  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
7427  * enable the number of virtual functions to the physical function. As
7428  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
7429  * API call does not considered as an error condition for most of the device.
7430  **/
7431 uint16_t
7432 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
7433 {
7434         struct pci_dev *pdev = phba->pcidev;
7435         uint16_t nr_virtfn;
7436         int pos;
7437
7438         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
7439         if (pos == 0)
7440                 return 0;
7441
7442         pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
7443         return nr_virtfn;
7444 }
7445
7446 /**
7447  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
7448  * @phba: pointer to lpfc hba data structure.
7449  * @nr_vfn: number of virtual functions to be enabled.
7450  *
7451  * This function enables the PCI SR-IOV virtual functions to a physical
7452  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
7453  * enable the number of virtual functions to the physical function. As
7454  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
7455  * API call does not considered as an error condition for most of the device.
7456  **/
7457 int
7458 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
7459 {
7460         struct pci_dev *pdev = phba->pcidev;
7461         uint16_t max_nr_vfn;
7462         int rc;
7463
7464         max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
7465         if (nr_vfn > max_nr_vfn) {
7466                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7467                                 "3057 Requested vfs (%d) greater than "
7468                                 "supported vfs (%d)", nr_vfn, max_nr_vfn);
7469                 return -EINVAL;
7470         }
7471
7472         rc = pci_enable_sriov(pdev, nr_vfn);
7473         if (rc) {
7474                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7475                                 "2806 Failed to enable sriov on this device "
7476                                 "with vfn number nr_vf:%d, rc:%d\n",
7477                                 nr_vfn, rc);
7478         } else
7479                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7480                                 "2807 Successful enable sriov on this device "
7481                                 "with vfn number nr_vf:%d\n", nr_vfn);
7482         return rc;
7483 }
7484
7485 static void
7486 lpfc_unblock_requests_work(struct work_struct *work)
7487 {
7488         struct lpfc_hba *phba = container_of(work, struct lpfc_hba,
7489                                              unblock_request_work);
7490
7491         lpfc_unblock_requests(phba);
7492 }
7493
7494 /**
7495  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
7496  * @phba: pointer to lpfc hba data structure.
7497  *
7498  * This routine is invoked to set up the driver internal resources before the
7499  * device specific resource setup to support the HBA device it attached to.
7500  *
7501  * Return codes
7502  *      0 - successful
7503  *      other values - error
7504  **/
7505 static int
7506 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
7507 {
7508         struct lpfc_sli *psli = &phba->sli;
7509
7510         /*
7511          * Driver resources common to all SLI revisions
7512          */
7513         atomic_set(&phba->fast_event_count, 0);
7514         atomic_set(&phba->dbg_log_idx, 0);
7515         atomic_set(&phba->dbg_log_cnt, 0);
7516         atomic_set(&phba->dbg_log_dmping, 0);
7517         spin_lock_init(&phba->hbalock);
7518
7519         /* Initialize port_list spinlock */
7520         spin_lock_init(&phba->port_list_lock);
7521         INIT_LIST_HEAD(&phba->port_list);
7522
7523         INIT_LIST_HEAD(&phba->work_list);
7524         init_waitqueue_head(&phba->wait_4_mlo_m_q);
7525
7526         /* Initialize the wait queue head for the kernel thread */
7527         init_waitqueue_head(&phba->work_waitq);
7528
7529         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7530                         "1403 Protocols supported %s %s %s\n",
7531                         ((phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ?
7532                                 "SCSI" : " "),
7533                         ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) ?
7534                                 "NVME" : " "),
7535                         (phba->nvmet_support ? "NVMET" : " "));
7536
7537         /* Initialize the IO buffer list used by driver for SLI3 SCSI */
7538         spin_lock_init(&phba->scsi_buf_list_get_lock);
7539         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get);
7540         spin_lock_init(&phba->scsi_buf_list_put_lock);
7541         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
7542
7543         /* Initialize the fabric iocb list */
7544         INIT_LIST_HEAD(&phba->fabric_iocb_list);
7545
7546         /* Initialize list to save ELS buffers */
7547         INIT_LIST_HEAD(&phba->elsbuf);
7548
7549         /* Initialize FCF connection rec list */
7550         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
7551
7552         /* Initialize OAS configuration list */
7553         spin_lock_init(&phba->devicelock);
7554         INIT_LIST_HEAD(&phba->luns);
7555
7556         /* MBOX heartbeat timer */
7557         timer_setup(&psli->mbox_tmo, lpfc_mbox_timeout, 0);
7558         /* Fabric block timer */
7559         timer_setup(&phba->fabric_block_timer, lpfc_fabric_block_timeout, 0);
7560         /* EA polling mode timer */
7561         timer_setup(&phba->eratt_poll, lpfc_poll_eratt, 0);
7562         /* Heartbeat timer */
7563         timer_setup(&phba->hb_tmofunc, lpfc_hb_timeout, 0);
7564
7565         INIT_DELAYED_WORK(&phba->eq_delay_work, lpfc_hb_eq_delay_work);
7566
7567         INIT_DELAYED_WORK(&phba->idle_stat_delay_work,
7568                           lpfc_idle_stat_delay_work);
7569         INIT_WORK(&phba->unblock_request_work, lpfc_unblock_requests_work);
7570         return 0;
7571 }
7572
7573 /**
7574  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev
7575  * @phba: pointer to lpfc hba data structure.
7576  *
7577  * This routine is invoked to set up the driver internal resources specific to
7578  * support the SLI-3 HBA device it attached to.
7579  *
7580  * Return codes
7581  * 0 - successful
7582  * other values - error
7583  **/
7584 static int
7585 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
7586 {
7587         int rc, entry_sz;
7588
7589         /*
7590          * Initialize timers used by driver
7591          */
7592
7593         /* FCP polling mode timer */
7594         timer_setup(&phba->fcp_poll_timer, lpfc_poll_timeout, 0);
7595
7596         /* Host attention work mask setup */
7597         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
7598         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
7599
7600         /* Get all the module params for configuring this host */
7601         lpfc_get_cfgparam(phba);
7602         /* Set up phase-1 common device driver resources */
7603
7604         rc = lpfc_setup_driver_resource_phase1(phba);
7605         if (rc)
7606                 return -ENODEV;
7607
7608         if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
7609                 phba->menlo_flag |= HBA_MENLO_SUPPORT;
7610                 /* check for menlo minimum sg count */
7611                 if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
7612                         phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
7613         }
7614
7615         if (!phba->sli.sli3_ring)
7616                 phba->sli.sli3_ring = kcalloc(LPFC_SLI3_MAX_RING,
7617                                               sizeof(struct lpfc_sli_ring),
7618                                               GFP_KERNEL);
7619         if (!phba->sli.sli3_ring)
7620                 return -ENOMEM;
7621
7622         /*
7623          * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size
7624          * used to create the sg_dma_buf_pool must be dynamically calculated.
7625          */
7626
7627         if (phba->sli_rev == LPFC_SLI_REV4)
7628                 entry_sz = sizeof(struct sli4_sge);
7629         else
7630                 entry_sz = sizeof(struct ulp_bde64);
7631
7632         /* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */
7633         if (phba->cfg_enable_bg) {
7634                 /*
7635                  * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,
7636                  * the FCP rsp, and a BDE for each. Sice we have no control
7637                  * over how many protection data segments the SCSI Layer
7638                  * will hand us (ie: there could be one for every block
7639                  * in the IO), we just allocate enough BDEs to accomidate
7640                  * our max amount and we need to limit lpfc_sg_seg_cnt to
7641                  * minimize the risk of running out.
7642                  */
7643                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
7644                         sizeof(struct fcp_rsp) +
7645                         (LPFC_MAX_SG_SEG_CNT * entry_sz);
7646
7647                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF)
7648                         phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF;
7649
7650                 /* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */
7651                 phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT;
7652         } else {
7653                 /*
7654                  * The scsi_buf for a regular I/O will hold the FCP cmnd,
7655                  * the FCP rsp, a BDE for each, and a BDE for up to
7656                  * cfg_sg_seg_cnt data segments.
7657                  */
7658                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
7659                         sizeof(struct fcp_rsp) +
7660                         ((phba->cfg_sg_seg_cnt + 2) * entry_sz);
7661
7662                 /* Total BDEs in BPL for scsi_sg_list */
7663                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
7664         }
7665
7666         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
7667                         "9088 INIT sg_tablesize:%d dmabuf_size:%d total_bde:%d\n",
7668                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
7669                         phba->cfg_total_seg_cnt);
7670
7671         phba->max_vpi = LPFC_MAX_VPI;
7672         /* This will be set to correct value after config_port mbox */
7673         phba->max_vports = 0;
7674
7675         /*
7676          * Initialize the SLI Layer to run with lpfc HBAs.
7677          */
7678         lpfc_sli_setup(phba);
7679         lpfc_sli_queue_init(phba);
7680
7681         /* Allocate device driver memory */
7682         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
7683                 return -ENOMEM;
7684
7685         phba->lpfc_sg_dma_buf_pool =
7686                 dma_pool_create("lpfc_sg_dma_buf_pool",
7687                                 &phba->pcidev->dev, phba->cfg_sg_dma_buf_size,
7688                                 BPL_ALIGN_SZ, 0);
7689
7690         if (!phba->lpfc_sg_dma_buf_pool)
7691                 goto fail_free_mem;
7692
7693         phba->lpfc_cmd_rsp_buf_pool =
7694                         dma_pool_create("lpfc_cmd_rsp_buf_pool",
7695                                         &phba->pcidev->dev,
7696                                         sizeof(struct fcp_cmnd) +
7697                                         sizeof(struct fcp_rsp),
7698                                         BPL_ALIGN_SZ, 0);
7699
7700         if (!phba->lpfc_cmd_rsp_buf_pool)
7701                 goto fail_free_dma_buf_pool;
7702
7703         /*
7704          * Enable sr-iov virtual functions if supported and configured
7705          * through the module parameter.
7706          */
7707         if (phba->cfg_sriov_nr_virtfn > 0) {
7708                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
7709                                                  phba->cfg_sriov_nr_virtfn);
7710                 if (rc) {
7711                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7712                                         "2808 Requested number of SR-IOV "
7713                                         "virtual functions (%d) is not "
7714                                         "supported\n",
7715                                         phba->cfg_sriov_nr_virtfn);
7716                         phba->cfg_sriov_nr_virtfn = 0;
7717                 }
7718         }
7719
7720         return 0;
7721
7722 fail_free_dma_buf_pool:
7723         dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
7724         phba->lpfc_sg_dma_buf_pool = NULL;
7725 fail_free_mem:
7726         lpfc_mem_free(phba);
7727         return -ENOMEM;
7728 }
7729
7730 /**
7731  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
7732  * @phba: pointer to lpfc hba data structure.
7733  *
7734  * This routine is invoked to unset the driver internal resources set up
7735  * specific for supporting the SLI-3 HBA device it attached to.
7736  **/
7737 static void
7738 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
7739 {
7740         /* Free device driver memory allocated */
7741         lpfc_mem_free_all(phba);
7742
7743         return;
7744 }
7745
7746 /**
7747  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
7748  * @phba: pointer to lpfc hba data structure.
7749  *
7750  * This routine is invoked to set up the driver internal resources specific to
7751  * support the SLI-4 HBA device it attached to.
7752  *
7753  * Return codes
7754  *      0 - successful
7755  *      other values - error
7756  **/
7757 static int
7758 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
7759 {
7760         LPFC_MBOXQ_t *mboxq;
7761         MAILBOX_t *mb;
7762         int rc, i, max_buf_size;
7763         int longs;
7764         int extra;
7765         uint64_t wwn;
7766         u32 if_type;
7767         u32 if_fam;
7768
7769         phba->sli4_hba.num_present_cpu = lpfc_present_cpu;
7770         phba->sli4_hba.num_possible_cpu = cpumask_last(cpu_possible_mask) + 1;
7771         phba->sli4_hba.curr_disp_cpu = 0;
7772
7773         /* Get all the module params for configuring this host */
7774         lpfc_get_cfgparam(phba);
7775
7776         /* Set up phase-1 common device driver resources */
7777         rc = lpfc_setup_driver_resource_phase1(phba);
7778         if (rc)
7779                 return -ENODEV;
7780
7781         /* Before proceed, wait for POST done and device ready */
7782         rc = lpfc_sli4_post_status_check(phba);
7783         if (rc)
7784                 return -ENODEV;
7785
7786         /* Allocate all driver workqueues here */
7787
7788         /* The lpfc_wq workqueue for deferred irq use */
7789         phba->wq = alloc_workqueue("lpfc_wq", WQ_MEM_RECLAIM, 0);
7790
7791         /*
7792          * Initialize timers used by driver
7793          */
7794
7795         timer_setup(&phba->rrq_tmr, lpfc_rrq_timeout, 0);
7796
7797         /* FCF rediscover timer */
7798         timer_setup(&phba->fcf.redisc_wait, lpfc_sli4_fcf_redisc_wait_tmo, 0);
7799
7800         /* CMF congestion timer */
7801         hrtimer_init(&phba->cmf_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
7802         phba->cmf_timer.function = lpfc_cmf_timer;
7803
7804         /*
7805          * Control structure for handling external multi-buffer mailbox
7806          * command pass-through.
7807          */
7808         memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
7809                 sizeof(struct lpfc_mbox_ext_buf_ctx));
7810         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
7811
7812         phba->max_vpi = LPFC_MAX_VPI;
7813
7814         /* This will be set to correct value after the read_config mbox */
7815         phba->max_vports = 0;
7816
7817         /* Program the default value of vlan_id and fc_map */
7818         phba->valid_vlan = 0;
7819         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
7820         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
7821         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
7822
7823         /*
7824          * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
7825          * we will associate a new ring, for each EQ/CQ/WQ tuple.
7826          * The WQ create will allocate the ring.
7827          */
7828
7829         /* Initialize buffer queue management fields */
7830         INIT_LIST_HEAD(&phba->hbqs[LPFC_ELS_HBQ].hbq_buffer_list);
7831         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
7832         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
7833
7834         /* for VMID idle timeout if VMID is enabled */
7835         if (lpfc_is_vmid_enabled(phba))
7836                 timer_setup(&phba->inactive_vmid_poll, lpfc_vmid_poll, 0);
7837
7838         /*
7839          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
7840          */
7841         /* Initialize the Abort buffer list used by driver */
7842         spin_lock_init(&phba->sli4_hba.abts_io_buf_list_lock);
7843         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_io_buf_list);
7844
7845         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
7846                 /* Initialize the Abort nvme buffer list used by driver */
7847                 spin_lock_init(&phba->sli4_hba.abts_nvmet_buf_list_lock);
7848                 INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
7849                 INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_io_wait_list);
7850                 spin_lock_init(&phba->sli4_hba.t_active_list_lock);
7851                 INIT_LIST_HEAD(&phba->sli4_hba.t_active_ctx_list);
7852         }
7853
7854         /* This abort list used by worker thread */
7855         spin_lock_init(&phba->sli4_hba.sgl_list_lock);
7856         spin_lock_init(&phba->sli4_hba.nvmet_io_wait_lock);
7857         spin_lock_init(&phba->sli4_hba.asynce_list_lock);
7858         spin_lock_init(&phba->sli4_hba.els_xri_abrt_list_lock);
7859
7860         /*
7861          * Initialize driver internal slow-path work queues
7862          */
7863
7864         /* Driver internel slow-path CQ Event pool */
7865         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
7866         /* Response IOCB work queue list */
7867         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
7868         /* Asynchronous event CQ Event work queue list */
7869         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
7870         /* Slow-path XRI aborted CQ Event work queue list */
7871         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
7872         /* Receive queue CQ Event work queue list */
7873         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
7874
7875         /* Initialize extent block lists. */
7876         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
7877         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
7878         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
7879         INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
7880
7881         /* Initialize mboxq lists. If the early init routines fail
7882          * these lists need to be correctly initialized.
7883          */
7884         INIT_LIST_HEAD(&phba->sli.mboxq);
7885         INIT_LIST_HEAD(&phba->sli.mboxq_cmpl);
7886
7887         /* initialize optic_state to 0xFF */
7888         phba->sli4_hba.lnk_info.optic_state = 0xff;
7889
7890         /* Allocate device driver memory */
7891         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
7892         if (rc)
7893                 return -ENOMEM;
7894
7895         /* IF Type 2 ports get initialized now. */
7896         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
7897             LPFC_SLI_INTF_IF_TYPE_2) {
7898                 rc = lpfc_pci_function_reset(phba);
7899                 if (unlikely(rc)) {
7900                         rc = -ENODEV;
7901                         goto out_free_mem;
7902                 }
7903                 phba->temp_sensor_support = 1;
7904         }
7905
7906         /* Create the bootstrap mailbox command */
7907         rc = lpfc_create_bootstrap_mbox(phba);
7908         if (unlikely(rc))
7909                 goto out_free_mem;
7910
7911         /* Set up the host's endian order with the device. */
7912         rc = lpfc_setup_endian_order(phba);
7913         if (unlikely(rc))
7914                 goto out_free_bsmbx;
7915
7916         /* Set up the hba's configuration parameters. */
7917         rc = lpfc_sli4_read_config(phba);
7918         if (unlikely(rc))
7919                 goto out_free_bsmbx;
7920         rc = lpfc_mem_alloc_active_rrq_pool_s4(phba);
7921         if (unlikely(rc))
7922                 goto out_free_bsmbx;
7923
7924         /* IF Type 0 ports get initialized now. */
7925         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
7926             LPFC_SLI_INTF_IF_TYPE_0) {
7927                 rc = lpfc_pci_function_reset(phba);
7928                 if (unlikely(rc))
7929                         goto out_free_bsmbx;
7930         }
7931
7932         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
7933                                                        GFP_KERNEL);
7934         if (!mboxq) {
7935                 rc = -ENOMEM;
7936                 goto out_free_bsmbx;
7937         }
7938
7939         /* Check for NVMET being configured */
7940         phba->nvmet_support = 0;
7941         if (lpfc_enable_nvmet_cnt) {
7942
7943                 /* First get WWN of HBA instance */
7944                 lpfc_read_nv(phba, mboxq);
7945                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7946                 if (rc != MBX_SUCCESS) {
7947                         lpfc_printf_log(phba, KERN_ERR,
7948                                         LOG_TRACE_EVENT,
7949                                         "6016 Mailbox failed , mbxCmd x%x "
7950                                         "READ_NV, mbxStatus x%x\n",
7951                                         bf_get(lpfc_mqe_command, &mboxq->u.mqe),
7952                                         bf_get(lpfc_mqe_status, &mboxq->u.mqe));
7953                         mempool_free(mboxq, phba->mbox_mem_pool);
7954                         rc = -EIO;
7955                         goto out_free_bsmbx;
7956                 }
7957                 mb = &mboxq->u.mb;
7958                 memcpy(&wwn, (char *)mb->un.varRDnvp.nodename,
7959                        sizeof(uint64_t));
7960                 wwn = cpu_to_be64(wwn);
7961                 phba->sli4_hba.wwnn.u.name = wwn;
7962                 memcpy(&wwn, (char *)mb->un.varRDnvp.portname,
7963                        sizeof(uint64_t));
7964                 /* wwn is WWPN of HBA instance */
7965                 wwn = cpu_to_be64(wwn);
7966                 phba->sli4_hba.wwpn.u.name = wwn;
7967
7968                 /* Check to see if it matches any module parameter */
7969                 for (i = 0; i < lpfc_enable_nvmet_cnt; i++) {
7970                         if (wwn == lpfc_enable_nvmet[i]) {
7971 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
7972                                 if (lpfc_nvmet_mem_alloc(phba))
7973                                         break;
7974
7975                                 phba->nvmet_support = 1; /* a match */
7976
7977                                 lpfc_printf_log(phba, KERN_ERR,
7978                                                 LOG_TRACE_EVENT,
7979                                                 "6017 NVME Target %016llx\n",
7980                                                 wwn);
7981 #else
7982                                 lpfc_printf_log(phba, KERN_ERR,
7983                                                 LOG_TRACE_EVENT,
7984                                                 "6021 Can't enable NVME Target."
7985                                                 " NVME_TARGET_FC infrastructure"
7986                                                 " is not in kernel\n");
7987 #endif
7988                                 /* Not supported for NVMET */
7989                                 phba->cfg_xri_rebalancing = 0;
7990                                 if (phba->irq_chann_mode == NHT_MODE) {
7991                                         phba->cfg_irq_chann =
7992                                                 phba->sli4_hba.num_present_cpu;
7993                                         phba->cfg_hdw_queue =
7994                                                 phba->sli4_hba.num_present_cpu;
7995                                         phba->irq_chann_mode = NORMAL_MODE;
7996                                 }
7997                                 break;
7998                         }
7999                 }
8000         }
8001
8002         lpfc_nvme_mod_param_dep(phba);
8003
8004         /*
8005          * Get sli4 parameters that override parameters from Port capabilities.
8006          * If this call fails, it isn't critical unless the SLI4 parameters come
8007          * back in conflict.
8008          */
8009         rc = lpfc_get_sli4_parameters(phba, mboxq);
8010         if (rc) {
8011                 if_type = bf_get(lpfc_sli_intf_if_type,
8012                                  &phba->sli4_hba.sli_intf);
8013                 if_fam = bf_get(lpfc_sli_intf_sli_family,
8014                                 &phba->sli4_hba.sli_intf);
8015                 if (phba->sli4_hba.extents_in_use &&
8016                     phba->sli4_hba.rpi_hdrs_in_use) {
8017                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8018                                         "2999 Unsupported SLI4 Parameters "
8019                                         "Extents and RPI headers enabled.\n");
8020                         if (if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
8021                             if_fam ==  LPFC_SLI_INTF_FAMILY_BE2) {
8022                                 mempool_free(mboxq, phba->mbox_mem_pool);
8023                                 rc = -EIO;
8024                                 goto out_free_bsmbx;
8025                         }
8026                 }
8027                 if (!(if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
8028                       if_fam == LPFC_SLI_INTF_FAMILY_BE2)) {
8029                         mempool_free(mboxq, phba->mbox_mem_pool);
8030                         rc = -EIO;
8031                         goto out_free_bsmbx;
8032                 }
8033         }
8034
8035         /*
8036          * 1 for cmd, 1 for rsp, NVME adds an extra one
8037          * for boundary conditions in its max_sgl_segment template.
8038          */
8039         extra = 2;
8040         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
8041                 extra++;
8042
8043         /*
8044          * It doesn't matter what family our adapter is in, we are
8045          * limited to 2 Pages, 512 SGEs, for our SGL.
8046          * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp
8047          */
8048         max_buf_size = (2 * SLI4_PAGE_SIZE);
8049
8050         /*
8051          * Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size
8052          * used to create the sg_dma_buf_pool must be calculated.
8053          */
8054         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
8055                 /* Both cfg_enable_bg and cfg_external_dif code paths */
8056
8057                 /*
8058                  * The scsi_buf for a T10-DIF I/O holds the FCP cmnd,
8059                  * the FCP rsp, and a SGE. Sice we have no control
8060                  * over how many protection segments the SCSI Layer
8061                  * will hand us (ie: there could be one for every block
8062                  * in the IO), just allocate enough SGEs to accomidate
8063                  * our max amount and we need to limit lpfc_sg_seg_cnt
8064                  * to minimize the risk of running out.
8065                  */
8066                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
8067                                 sizeof(struct fcp_rsp) + max_buf_size;
8068
8069                 /* Total SGEs for scsi_sg_list and scsi_sg_prot_list */
8070                 phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT;
8071
8072                 /*
8073                  * If supporting DIF, reduce the seg count for scsi to
8074                  * allow room for the DIF sges.
8075                  */
8076                 if (phba->cfg_enable_bg &&
8077                     phba->cfg_sg_seg_cnt > LPFC_MAX_BG_SLI4_SEG_CNT_DIF)
8078                         phba->cfg_scsi_seg_cnt = LPFC_MAX_BG_SLI4_SEG_CNT_DIF;
8079                 else
8080                         phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
8081
8082         } else {
8083                 /*
8084                  * The scsi_buf for a regular I/O holds the FCP cmnd,
8085                  * the FCP rsp, a SGE for each, and a SGE for up to
8086                  * cfg_sg_seg_cnt data segments.
8087                  */
8088                 phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
8089                                 sizeof(struct fcp_rsp) +
8090                                 ((phba->cfg_sg_seg_cnt + extra) *
8091                                 sizeof(struct sli4_sge));
8092
8093                 /* Total SGEs for scsi_sg_list */
8094                 phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + extra;
8095                 phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
8096
8097                 /*
8098                  * NOTE: if (phba->cfg_sg_seg_cnt + extra) <= 256 we only
8099                  * need to post 1 page for the SGL.
8100                  */
8101         }
8102
8103         if (phba->cfg_xpsgl && !phba->nvmet_support)
8104                 phba->cfg_sg_dma_buf_size = LPFC_DEFAULT_XPSGL_SIZE;
8105         else if (phba->cfg_sg_dma_buf_size  <= LPFC_MIN_SG_SLI4_BUF_SZ)
8106                 phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ;
8107         else
8108                 phba->cfg_sg_dma_buf_size =
8109                                 SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size);
8110
8111         phba->border_sge_num = phba->cfg_sg_dma_buf_size /
8112                                sizeof(struct sli4_sge);
8113
8114         /* Limit to LPFC_MAX_NVME_SEG_CNT for NVME. */
8115         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
8116                 if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
8117                         lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
8118                                         "6300 Reducing NVME sg segment "
8119                                         "cnt to %d\n",
8120                                         LPFC_MAX_NVME_SEG_CNT);
8121                         phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
8122                 } else
8123                         phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
8124         }
8125
8126         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
8127                         "9087 sg_seg_cnt:%d dmabuf_size:%d "
8128                         "total:%d scsi:%d nvme:%d\n",
8129                         phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
8130                         phba->cfg_total_seg_cnt,  phba->cfg_scsi_seg_cnt,
8131                         phba->cfg_nvme_seg_cnt);
8132
8133         if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE)
8134                 i = phba->cfg_sg_dma_buf_size;
8135         else
8136                 i = SLI4_PAGE_SIZE;
8137
8138         phba->lpfc_sg_dma_buf_pool =
8139                         dma_pool_create("lpfc_sg_dma_buf_pool",
8140                                         &phba->pcidev->dev,
8141                                         phba->cfg_sg_dma_buf_size,
8142                                         i, 0);
8143         if (!phba->lpfc_sg_dma_buf_pool)
8144                 goto out_free_bsmbx;
8145
8146         phba->lpfc_cmd_rsp_buf_pool =
8147                         dma_pool_create("lpfc_cmd_rsp_buf_pool",
8148                                         &phba->pcidev->dev,
8149                                         sizeof(struct fcp_cmnd) +
8150                                         sizeof(struct fcp_rsp),
8151                                         i, 0);
8152         if (!phba->lpfc_cmd_rsp_buf_pool)
8153                 goto out_free_sg_dma_buf;
8154
8155         mempool_free(mboxq, phba->mbox_mem_pool);
8156
8157         /* Verify OAS is supported */
8158         lpfc_sli4_oas_verify(phba);
8159
8160         /* Verify RAS support on adapter */
8161         lpfc_sli4_ras_init(phba);
8162
8163         /* Verify all the SLI4 queues */
8164         rc = lpfc_sli4_queue_verify(phba);
8165         if (rc)
8166                 goto out_free_cmd_rsp_buf;
8167
8168         /* Create driver internal CQE event pool */
8169         rc = lpfc_sli4_cq_event_pool_create(phba);
8170         if (rc)
8171                 goto out_free_cmd_rsp_buf;
8172
8173         /* Initialize sgl lists per host */
8174         lpfc_init_sgl_list(phba);
8175
8176         /* Allocate and initialize active sgl array */
8177         rc = lpfc_init_active_sgl_array(phba);
8178         if (rc) {
8179                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8180                                 "1430 Failed to initialize sgl list.\n");
8181                 goto out_destroy_cq_event_pool;
8182         }
8183         rc = lpfc_sli4_init_rpi_hdrs(phba);
8184         if (rc) {
8185                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8186                                 "1432 Failed to initialize rpi headers.\n");
8187                 goto out_free_active_sgl;
8188         }
8189
8190         /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
8191         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
8192         phba->fcf.fcf_rr_bmask = kcalloc(longs, sizeof(unsigned long),
8193                                          GFP_KERNEL);
8194         if (!phba->fcf.fcf_rr_bmask) {
8195                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8196                                 "2759 Failed allocate memory for FCF round "
8197                                 "robin failover bmask\n");
8198                 rc = -ENOMEM;
8199                 goto out_remove_rpi_hdrs;
8200         }
8201
8202         phba->sli4_hba.hba_eq_hdl = kcalloc(phba->cfg_irq_chann,
8203                                             sizeof(struct lpfc_hba_eq_hdl),
8204                                             GFP_KERNEL);
8205         if (!phba->sli4_hba.hba_eq_hdl) {
8206                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8207                                 "2572 Failed allocate memory for "
8208                                 "fast-path per-EQ handle array\n");
8209                 rc = -ENOMEM;
8210                 goto out_free_fcf_rr_bmask;
8211         }
8212
8213         phba->sli4_hba.cpu_map = kcalloc(phba->sli4_hba.num_possible_cpu,
8214                                         sizeof(struct lpfc_vector_map_info),
8215                                         GFP_KERNEL);
8216         if (!phba->sli4_hba.cpu_map) {
8217                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8218                                 "3327 Failed allocate memory for msi-x "
8219                                 "interrupt vector mapping\n");
8220                 rc = -ENOMEM;
8221                 goto out_free_hba_eq_hdl;
8222         }
8223
8224         phba->sli4_hba.eq_info = alloc_percpu(struct lpfc_eq_intr_info);
8225         if (!phba->sli4_hba.eq_info) {
8226                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8227                                 "3321 Failed allocation for per_cpu stats\n");
8228                 rc = -ENOMEM;
8229                 goto out_free_hba_cpu_map;
8230         }
8231
8232         phba->sli4_hba.idle_stat = kcalloc(phba->sli4_hba.num_possible_cpu,
8233                                            sizeof(*phba->sli4_hba.idle_stat),
8234                                            GFP_KERNEL);
8235         if (!phba->sli4_hba.idle_stat) {
8236                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8237                                 "3390 Failed allocation for idle_stat\n");
8238                 rc = -ENOMEM;
8239                 goto out_free_hba_eq_info;
8240         }
8241
8242 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
8243         phba->sli4_hba.c_stat = alloc_percpu(struct lpfc_hdwq_stat);
8244         if (!phba->sli4_hba.c_stat) {
8245                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8246                                 "3332 Failed allocating per cpu hdwq stats\n");
8247                 rc = -ENOMEM;
8248                 goto out_free_hba_idle_stat;
8249         }
8250 #endif
8251
8252         phba->cmf_stat = alloc_percpu(struct lpfc_cgn_stat);
8253         if (!phba->cmf_stat) {
8254                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8255                                 "3331 Failed allocating per cpu cgn stats\n");
8256                 rc = -ENOMEM;
8257                 goto out_free_hba_hdwq_info;
8258         }
8259
8260         /*
8261          * Enable sr-iov virtual functions if supported and configured
8262          * through the module parameter.
8263          */
8264         if (phba->cfg_sriov_nr_virtfn > 0) {
8265                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
8266                                                  phba->cfg_sriov_nr_virtfn);
8267                 if (rc) {
8268                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8269                                         "3020 Requested number of SR-IOV "
8270                                         "virtual functions (%d) is not "
8271                                         "supported\n",
8272                                         phba->cfg_sriov_nr_virtfn);
8273                         phba->cfg_sriov_nr_virtfn = 0;
8274                 }
8275         }
8276
8277         return 0;
8278
8279 out_free_hba_hdwq_info:
8280 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
8281         free_percpu(phba->sli4_hba.c_stat);
8282 out_free_hba_idle_stat:
8283 #endif
8284         kfree(phba->sli4_hba.idle_stat);
8285 out_free_hba_eq_info:
8286         free_percpu(phba->sli4_hba.eq_info);
8287 out_free_hba_cpu_map:
8288         kfree(phba->sli4_hba.cpu_map);
8289 out_free_hba_eq_hdl:
8290         kfree(phba->sli4_hba.hba_eq_hdl);
8291 out_free_fcf_rr_bmask:
8292         kfree(phba->fcf.fcf_rr_bmask);
8293 out_remove_rpi_hdrs:
8294         lpfc_sli4_remove_rpi_hdrs(phba);
8295 out_free_active_sgl:
8296         lpfc_free_active_sgl(phba);
8297 out_destroy_cq_event_pool:
8298         lpfc_sli4_cq_event_pool_destroy(phba);
8299 out_free_cmd_rsp_buf:
8300         dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);
8301         phba->lpfc_cmd_rsp_buf_pool = NULL;
8302 out_free_sg_dma_buf:
8303         dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
8304         phba->lpfc_sg_dma_buf_pool = NULL;
8305 out_free_bsmbx:
8306         lpfc_destroy_bootstrap_mbox(phba);
8307 out_free_mem:
8308         lpfc_mem_free(phba);
8309         return rc;
8310 }
8311
8312 /**
8313  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
8314  * @phba: pointer to lpfc hba data structure.
8315  *
8316  * This routine is invoked to unset the driver internal resources set up
8317  * specific for supporting the SLI-4 HBA device it attached to.
8318  **/
8319 static void
8320 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
8321 {
8322         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
8323
8324         free_percpu(phba->sli4_hba.eq_info);
8325 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
8326         free_percpu(phba->sli4_hba.c_stat);
8327 #endif
8328         free_percpu(phba->cmf_stat);
8329         kfree(phba->sli4_hba.idle_stat);
8330
8331         /* Free memory allocated for msi-x interrupt vector to CPU mapping */
8332         kfree(phba->sli4_hba.cpu_map);
8333         phba->sli4_hba.num_possible_cpu = 0;
8334         phba->sli4_hba.num_present_cpu = 0;
8335         phba->sli4_hba.curr_disp_cpu = 0;
8336         cpumask_clear(&phba->sli4_hba.irq_aff_mask);
8337
8338         /* Free memory allocated for fast-path work queue handles */
8339         kfree(phba->sli4_hba.hba_eq_hdl);
8340
8341         /* Free the allocated rpi headers. */
8342         lpfc_sli4_remove_rpi_hdrs(phba);
8343         lpfc_sli4_remove_rpis(phba);
8344
8345         /* Free eligible FCF index bmask */
8346         kfree(phba->fcf.fcf_rr_bmask);
8347
8348         /* Free the ELS sgl list */
8349         lpfc_free_active_sgl(phba);
8350         lpfc_free_els_sgl_list(phba);
8351         lpfc_free_nvmet_sgl_list(phba);
8352
8353         /* Free the completion queue EQ event pool */
8354         lpfc_sli4_cq_event_release_all(phba);
8355         lpfc_sli4_cq_event_pool_destroy(phba);
8356
8357         /* Release resource identifiers. */
8358         lpfc_sli4_dealloc_resource_identifiers(phba);
8359
8360         /* Free the bsmbx region. */
8361         lpfc_destroy_bootstrap_mbox(phba);
8362
8363         /* Free the SLI Layer memory with SLI4 HBAs */
8364         lpfc_mem_free_all(phba);
8365
8366         /* Free the current connect table */
8367         list_for_each_entry_safe(conn_entry, next_conn_entry,
8368                 &phba->fcf_conn_rec_list, list) {
8369                 list_del_init(&conn_entry->list);
8370                 kfree(conn_entry);
8371         }
8372
8373         return;
8374 }
8375
8376 /**
8377  * lpfc_init_api_table_setup - Set up init api function jump table
8378  * @phba: The hba struct for which this call is being executed.
8379  * @dev_grp: The HBA PCI-Device group number.
8380  *
8381  * This routine sets up the device INIT interface API function jump table
8382  * in @phba struct.
8383  *
8384  * Returns: 0 - success, -ENODEV - failure.
8385  **/
8386 int
8387 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
8388 {
8389         phba->lpfc_hba_init_link = lpfc_hba_init_link;
8390         phba->lpfc_hba_down_link = lpfc_hba_down_link;
8391         phba->lpfc_selective_reset = lpfc_selective_reset;
8392         switch (dev_grp) {
8393         case LPFC_PCI_DEV_LP:
8394                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
8395                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
8396                 phba->lpfc_stop_port = lpfc_stop_port_s3;
8397                 break;
8398         case LPFC_PCI_DEV_OC:
8399                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
8400                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
8401                 phba->lpfc_stop_port = lpfc_stop_port_s4;
8402                 break;
8403         default:
8404                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8405                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
8406                                 dev_grp);
8407                 return -ENODEV;
8408         }
8409         return 0;
8410 }
8411
8412 /**
8413  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
8414  * @phba: pointer to lpfc hba data structure.
8415  *
8416  * This routine is invoked to set up the driver internal resources after the
8417  * device specific resource setup to support the HBA device it attached to.
8418  *
8419  * Return codes
8420  *      0 - successful
8421  *      other values - error
8422  **/
8423 static int
8424 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
8425 {
8426         int error;
8427
8428         /* Startup the kernel thread for this host adapter. */
8429         phba->worker_thread = kthread_run(lpfc_do_work, phba,
8430                                           "lpfc_worker_%d", phba->brd_no);
8431         if (IS_ERR(phba->worker_thread)) {
8432                 error = PTR_ERR(phba->worker_thread);
8433                 return error;
8434         }
8435
8436         return 0;
8437 }
8438
8439 /**
8440  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
8441  * @phba: pointer to lpfc hba data structure.
8442  *
8443  * This routine is invoked to unset the driver internal resources set up after
8444  * the device specific resource setup for supporting the HBA device it
8445  * attached to.
8446  **/
8447 static void
8448 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
8449 {
8450         if (phba->wq) {
8451                 flush_workqueue(phba->wq);
8452                 destroy_workqueue(phba->wq);
8453                 phba->wq = NULL;
8454         }
8455
8456         /* Stop kernel worker thread */
8457         if (phba->worker_thread)
8458                 kthread_stop(phba->worker_thread);
8459 }
8460
8461 /**
8462  * lpfc_free_iocb_list - Free iocb list.
8463  * @phba: pointer to lpfc hba data structure.
8464  *
8465  * This routine is invoked to free the driver's IOCB list and memory.
8466  **/
8467 void
8468 lpfc_free_iocb_list(struct lpfc_hba *phba)
8469 {
8470         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
8471
8472         spin_lock_irq(&phba->hbalock);
8473         list_for_each_entry_safe(iocbq_entry, iocbq_next,
8474                                  &phba->lpfc_iocb_list, list) {
8475                 list_del(&iocbq_entry->list);
8476                 kfree(iocbq_entry);
8477                 phba->total_iocbq_bufs--;
8478         }
8479         spin_unlock_irq(&phba->hbalock);
8480
8481         return;
8482 }
8483
8484 /**
8485  * lpfc_init_iocb_list - Allocate and initialize iocb list.
8486  * @phba: pointer to lpfc hba data structure.
8487  * @iocb_count: number of requested iocbs
8488  *
8489  * This routine is invoked to allocate and initizlize the driver's IOCB
8490  * list and set up the IOCB tag array accordingly.
8491  *
8492  * Return codes
8493  *      0 - successful
8494  *      other values - error
8495  **/
8496 int
8497 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
8498 {
8499         struct lpfc_iocbq *iocbq_entry = NULL;
8500         uint16_t iotag;
8501         int i;
8502
8503         /* Initialize and populate the iocb list per host.  */
8504         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
8505         for (i = 0; i < iocb_count; i++) {
8506                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
8507                 if (iocbq_entry == NULL) {
8508                         printk(KERN_ERR "%s: only allocated %d iocbs of "
8509                                 "expected %d count. Unloading driver.\n",
8510                                 __func__, i, iocb_count);
8511                         goto out_free_iocbq;
8512                 }
8513
8514                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
8515                 if (iotag == 0) {
8516                         kfree(iocbq_entry);
8517                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
8518                                 "Unloading driver.\n", __func__);
8519                         goto out_free_iocbq;
8520                 }
8521                 iocbq_entry->sli4_lxritag = NO_XRI;
8522                 iocbq_entry->sli4_xritag = NO_XRI;
8523
8524                 spin_lock_irq(&phba->hbalock);
8525                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
8526                 phba->total_iocbq_bufs++;
8527                 spin_unlock_irq(&phba->hbalock);
8528         }
8529
8530         return 0;
8531
8532 out_free_iocbq:
8533         lpfc_free_iocb_list(phba);
8534
8535         return -ENOMEM;
8536 }
8537
8538 /**
8539  * lpfc_free_sgl_list - Free a given sgl list.
8540  * @phba: pointer to lpfc hba data structure.
8541  * @sglq_list: pointer to the head of sgl list.
8542  *
8543  * This routine is invoked to free a give sgl list and memory.
8544  **/
8545 void
8546 lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)
8547 {
8548         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
8549
8550         list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {
8551                 list_del(&sglq_entry->list);
8552                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
8553                 kfree(sglq_entry);
8554         }
8555 }
8556
8557 /**
8558  * lpfc_free_els_sgl_list - Free els sgl list.
8559  * @phba: pointer to lpfc hba data structure.
8560  *
8561  * This routine is invoked to free the driver's els sgl list and memory.
8562  **/
8563 static void
8564 lpfc_free_els_sgl_list(struct lpfc_hba *phba)
8565 {
8566         LIST_HEAD(sglq_list);
8567
8568         /* Retrieve all els sgls from driver list */
8569         spin_lock_irq(&phba->sli4_hba.sgl_list_lock);
8570         list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list, &sglq_list);
8571         spin_unlock_irq(&phba->sli4_hba.sgl_list_lock);
8572
8573         /* Now free the sgl list */
8574         lpfc_free_sgl_list(phba, &sglq_list);
8575 }
8576
8577 /**
8578  * lpfc_free_nvmet_sgl_list - Free nvmet sgl list.
8579  * @phba: pointer to lpfc hba data structure.
8580  *
8581  * This routine is invoked to free the driver's nvmet sgl list and memory.
8582  **/
8583 static void
8584 lpfc_free_nvmet_sgl_list(struct lpfc_hba *phba)
8585 {
8586         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
8587         LIST_HEAD(sglq_list);
8588
8589         /* Retrieve all nvmet sgls from driver list */
8590         spin_lock_irq(&phba->hbalock);
8591         spin_lock(&phba->sli4_hba.sgl_list_lock);
8592         list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list, &sglq_list);
8593         spin_unlock(&phba->sli4_hba.sgl_list_lock);
8594         spin_unlock_irq(&phba->hbalock);
8595
8596         /* Now free the sgl list */
8597         list_for_each_entry_safe(sglq_entry, sglq_next, &sglq_list, list) {
8598                 list_del(&sglq_entry->list);
8599                 lpfc_nvmet_buf_free(phba, sglq_entry->virt, sglq_entry->phys);
8600                 kfree(sglq_entry);
8601         }
8602
8603         /* Update the nvmet_xri_cnt to reflect no current sgls.
8604          * The next initialization cycle sets the count and allocates
8605          * the sgls over again.
8606          */
8607         phba->sli4_hba.nvmet_xri_cnt = 0;
8608 }
8609
8610 /**
8611  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
8612  * @phba: pointer to lpfc hba data structure.
8613  *
8614  * This routine is invoked to allocate the driver's active sgl memory.
8615  * This array will hold the sglq_entry's for active IOs.
8616  **/
8617 static int
8618 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
8619 {
8620         int size;
8621         size = sizeof(struct lpfc_sglq *);
8622         size *= phba->sli4_hba.max_cfg_param.max_xri;
8623
8624         phba->sli4_hba.lpfc_sglq_active_list =
8625                 kzalloc(size, GFP_KERNEL);
8626         if (!phba->sli4_hba.lpfc_sglq_active_list)
8627                 return -ENOMEM;
8628         return 0;
8629 }
8630
8631 /**
8632  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
8633  * @phba: pointer to lpfc hba data structure.
8634  *
8635  * This routine is invoked to walk through the array of active sglq entries
8636  * and free all of the resources.
8637  * This is just a place holder for now.
8638  **/
8639 static void
8640 lpfc_free_active_sgl(struct lpfc_hba *phba)
8641 {
8642         kfree(phba->sli4_hba.lpfc_sglq_active_list);
8643 }
8644
8645 /**
8646  * lpfc_init_sgl_list - Allocate and initialize sgl list.
8647  * @phba: pointer to lpfc hba data structure.
8648  *
8649  * This routine is invoked to allocate and initizlize the driver's sgl
8650  * list and set up the sgl xritag tag array accordingly.
8651  *
8652  **/
8653 static void
8654 lpfc_init_sgl_list(struct lpfc_hba *phba)
8655 {
8656         /* Initialize and populate the sglq list per host/VF. */
8657         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_els_sgl_list);
8658         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
8659         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_sgl_list);
8660         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
8661
8662         /* els xri-sgl book keeping */
8663         phba->sli4_hba.els_xri_cnt = 0;
8664
8665         /* nvme xri-buffer book keeping */
8666         phba->sli4_hba.io_xri_cnt = 0;
8667 }
8668
8669 /**
8670  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
8671  * @phba: pointer to lpfc hba data structure.
8672  *
8673  * This routine is invoked to post rpi header templates to the
8674  * port for those SLI4 ports that do not support extents.  This routine
8675  * posts a PAGE_SIZE memory region to the port to hold up to
8676  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
8677  * and should be called only when interrupts are disabled.
8678  *
8679  * Return codes
8680  *      0 - successful
8681  *      -ERROR - otherwise.
8682  **/
8683 int
8684 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
8685 {
8686         int rc = 0;
8687         struct lpfc_rpi_hdr *rpi_hdr;
8688
8689         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
8690         if (!phba->sli4_hba.rpi_hdrs_in_use)
8691                 return rc;
8692         if (phba->sli4_hba.extents_in_use)
8693                 return -EIO;
8694
8695         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
8696         if (!rpi_hdr) {
8697                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8698                                 "0391 Error during rpi post operation\n");
8699                 lpfc_sli4_remove_rpis(phba);
8700                 rc = -ENODEV;
8701         }
8702
8703         return rc;
8704 }
8705
8706 /**
8707  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
8708  * @phba: pointer to lpfc hba data structure.
8709  *
8710  * This routine is invoked to allocate a single 4KB memory region to
8711  * support rpis and stores them in the phba.  This single region
8712  * provides support for up to 64 rpis.  The region is used globally
8713  * by the device.
8714  *
8715  * Returns:
8716  *   A valid rpi hdr on success.
8717  *   A NULL pointer on any failure.
8718  **/
8719 struct lpfc_rpi_hdr *
8720 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
8721 {
8722         uint16_t rpi_limit, curr_rpi_range;
8723         struct lpfc_dmabuf *dmabuf;
8724         struct lpfc_rpi_hdr *rpi_hdr;
8725
8726         /*
8727          * If the SLI4 port supports extents, posting the rpi header isn't
8728          * required.  Set the expected maximum count and let the actual value
8729          * get set when extents are fully allocated.
8730          */
8731         if (!phba->sli4_hba.rpi_hdrs_in_use)
8732                 return NULL;
8733         if (phba->sli4_hba.extents_in_use)
8734                 return NULL;
8735
8736         /* The limit on the logical index is just the max_rpi count. */
8737         rpi_limit = phba->sli4_hba.max_cfg_param.max_rpi;
8738
8739         spin_lock_irq(&phba->hbalock);
8740         /*
8741          * Establish the starting RPI in this header block.  The starting
8742          * rpi is normalized to a zero base because the physical rpi is
8743          * port based.
8744          */
8745         curr_rpi_range = phba->sli4_hba.next_rpi;
8746         spin_unlock_irq(&phba->hbalock);
8747
8748         /* Reached full RPI range */
8749         if (curr_rpi_range == rpi_limit)
8750                 return NULL;
8751
8752         /*
8753          * First allocate the protocol header region for the port.  The
8754          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
8755          */
8756         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
8757         if (!dmabuf)
8758                 return NULL;
8759
8760         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
8761                                           LPFC_HDR_TEMPLATE_SIZE,
8762                                           &dmabuf->phys, GFP_KERNEL);
8763         if (!dmabuf->virt) {
8764                 rpi_hdr = NULL;
8765                 goto err_free_dmabuf;
8766         }
8767
8768         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
8769                 rpi_hdr = NULL;
8770                 goto err_free_coherent;
8771         }
8772
8773         /* Save the rpi header data for cleanup later. */
8774         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
8775         if (!rpi_hdr)
8776                 goto err_free_coherent;
8777
8778         rpi_hdr->dmabuf = dmabuf;
8779         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
8780         rpi_hdr->page_count = 1;
8781         spin_lock_irq(&phba->hbalock);
8782
8783         /* The rpi_hdr stores the logical index only. */
8784         rpi_hdr->start_rpi = curr_rpi_range;
8785         rpi_hdr->next_rpi = phba->sli4_hba.next_rpi + LPFC_RPI_HDR_COUNT;
8786         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
8787
8788         spin_unlock_irq(&phba->hbalock);
8789         return rpi_hdr;
8790
8791  err_free_coherent:
8792         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
8793                           dmabuf->virt, dmabuf->phys);
8794  err_free_dmabuf:
8795         kfree(dmabuf);
8796         return NULL;
8797 }
8798
8799 /**
8800  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
8801  * @phba: pointer to lpfc hba data structure.
8802  *
8803  * This routine is invoked to remove all memory resources allocated
8804  * to support rpis for SLI4 ports not supporting extents. This routine
8805  * presumes the caller has released all rpis consumed by fabric or port
8806  * logins and is prepared to have the header pages removed.
8807  **/
8808 void
8809 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
8810 {
8811         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
8812
8813         if (!phba->sli4_hba.rpi_hdrs_in_use)
8814                 goto exit;
8815
8816         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
8817                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
8818                 list_del(&rpi_hdr->list);
8819                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
8820                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
8821                 kfree(rpi_hdr->dmabuf);
8822                 kfree(rpi_hdr);
8823         }
8824  exit:
8825         /* There are no rpis available to the port now. */
8826         phba->sli4_hba.next_rpi = 0;
8827 }
8828
8829 /**
8830  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
8831  * @pdev: pointer to pci device data structure.
8832  *
8833  * This routine is invoked to allocate the driver hba data structure for an
8834  * HBA device. If the allocation is successful, the phba reference to the
8835  * PCI device data structure is set.
8836  *
8837  * Return codes
8838  *      pointer to @phba - successful
8839  *      NULL - error
8840  **/
8841 static struct lpfc_hba *
8842 lpfc_hba_alloc(struct pci_dev *pdev)
8843 {
8844         struct lpfc_hba *phba;
8845
8846         /* Allocate memory for HBA structure */
8847         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
8848         if (!phba) {
8849                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
8850                 return NULL;
8851         }
8852
8853         /* Set reference to PCI device in HBA structure */
8854         phba->pcidev = pdev;
8855
8856         /* Assign an unused board number */
8857         phba->brd_no = lpfc_get_instance();
8858         if (phba->brd_no < 0) {
8859                 kfree(phba);
8860                 return NULL;
8861         }
8862         phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
8863
8864         spin_lock_init(&phba->ct_ev_lock);
8865         INIT_LIST_HEAD(&phba->ct_ev_waiters);
8866
8867         return phba;
8868 }
8869
8870 /**
8871  * lpfc_hba_free - Free driver hba data structure with a device.
8872  * @phba: pointer to lpfc hba data structure.
8873  *
8874  * This routine is invoked to free the driver hba data structure with an
8875  * HBA device.
8876  **/
8877 static void
8878 lpfc_hba_free(struct lpfc_hba *phba)
8879 {
8880         if (phba->sli_rev == LPFC_SLI_REV4)
8881                 kfree(phba->sli4_hba.hdwq);
8882
8883         /* Release the driver assigned board number */
8884         idr_remove(&lpfc_hba_index, phba->brd_no);
8885
8886         /* Free memory allocated with sli3 rings */
8887         kfree(phba->sli.sli3_ring);
8888         phba->sli.sli3_ring = NULL;
8889
8890         kfree(phba);
8891         return;
8892 }
8893
8894 /**
8895  * lpfc_create_shost - Create hba physical port with associated scsi host.
8896  * @phba: pointer to lpfc hba data structure.
8897  *
8898  * This routine is invoked to create HBA physical port and associate a SCSI
8899  * host with it.
8900  *
8901  * Return codes
8902  *      0 - successful
8903  *      other values - error
8904  **/
8905 static int
8906 lpfc_create_shost(struct lpfc_hba *phba)
8907 {
8908         struct lpfc_vport *vport;
8909         struct Scsi_Host  *shost;
8910
8911         /* Initialize HBA FC structure */
8912         phba->fc_edtov = FF_DEF_EDTOV;
8913         phba->fc_ratov = FF_DEF_RATOV;
8914         phba->fc_altov = FF_DEF_ALTOV;
8915         phba->fc_arbtov = FF_DEF_ARBTOV;
8916
8917         atomic_set(&phba->sdev_cnt, 0);
8918         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
8919         if (!vport)
8920                 return -ENODEV;
8921
8922         shost = lpfc_shost_from_vport(vport);
8923         phba->pport = vport;
8924
8925         if (phba->nvmet_support) {
8926                 /* Only 1 vport (pport) will support NVME target */
8927                 phba->targetport = NULL;
8928                 phba->cfg_enable_fc4_type = LPFC_ENABLE_NVME;
8929                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME_DISC,
8930                                 "6076 NVME Target Found\n");
8931         }
8932
8933         lpfc_debugfs_initialize(vport);
8934         /* Put reference to SCSI host to driver's device private data */
8935         pci_set_drvdata(phba->pcidev, shost);
8936
8937         /*
8938          * At this point we are fully registered with PSA. In addition,
8939          * any initial discovery should be completed.
8940          */
8941         vport->load_flag |= FC_ALLOW_FDMI;
8942         if (phba->cfg_enable_SmartSAN ||
8943             (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
8944
8945                 /* Setup appropriate attribute masks */
8946                 vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
8947                 if (phba->cfg_enable_SmartSAN)
8948                         vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
8949                 else
8950                         vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
8951         }
8952         return 0;
8953 }
8954
8955 /**
8956  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
8957  * @phba: pointer to lpfc hba data structure.
8958  *
8959  * This routine is invoked to destroy HBA physical port and the associated
8960  * SCSI host.
8961  **/
8962 static void
8963 lpfc_destroy_shost(struct lpfc_hba *phba)
8964 {
8965         struct lpfc_vport *vport = phba->pport;
8966
8967         /* Destroy physical port that associated with the SCSI host */
8968         destroy_port(vport);
8969
8970         return;
8971 }
8972
8973 /**
8974  * lpfc_setup_bg - Setup Block guard structures and debug areas.
8975  * @phba: pointer to lpfc hba data structure.
8976  * @shost: the shost to be used to detect Block guard settings.
8977  *
8978  * This routine sets up the local Block guard protocol settings for @shost.
8979  * This routine also allocates memory for debugging bg buffers.
8980  **/
8981 static void
8982 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
8983 {
8984         uint32_t old_mask;
8985         uint32_t old_guard;
8986
8987         if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
8988                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8989                                 "1478 Registering BlockGuard with the "
8990                                 "SCSI layer\n");
8991
8992                 old_mask = phba->cfg_prot_mask;
8993                 old_guard = phba->cfg_prot_guard;
8994
8995                 /* Only allow supported values */
8996                 phba->cfg_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |
8997                         SHOST_DIX_TYPE0_PROTECTION |
8998                         SHOST_DIX_TYPE1_PROTECTION);
8999                 phba->cfg_prot_guard &= (SHOST_DIX_GUARD_IP |
9000                                          SHOST_DIX_GUARD_CRC);
9001
9002                 /* DIF Type 1 protection for profiles AST1/C1 is end to end */
9003                 if (phba->cfg_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
9004                         phba->cfg_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
9005
9006                 if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
9007                         if ((old_mask != phba->cfg_prot_mask) ||
9008                                 (old_guard != phba->cfg_prot_guard))
9009                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9010                                         "1475 Registering BlockGuard with the "
9011                                         "SCSI layer: mask %d  guard %d\n",
9012                                         phba->cfg_prot_mask,
9013                                         phba->cfg_prot_guard);
9014
9015                         scsi_host_set_prot(shost, phba->cfg_prot_mask);
9016                         scsi_host_set_guard(shost, phba->cfg_prot_guard);
9017                 } else
9018                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9019                                 "1479 Not Registering BlockGuard with the SCSI "
9020                                 "layer, Bad protection parameters: %d %d\n",
9021                                 old_mask, old_guard);
9022         }
9023 }
9024
9025 /**
9026  * lpfc_post_init_setup - Perform necessary device post initialization setup.
9027  * @phba: pointer to lpfc hba data structure.
9028  *
9029  * This routine is invoked to perform all the necessary post initialization
9030  * setup for the device.
9031  **/
9032 static void
9033 lpfc_post_init_setup(struct lpfc_hba *phba)
9034 {
9035         struct Scsi_Host  *shost;
9036         struct lpfc_adapter_event_header adapter_event;
9037
9038         /* Get the default values for Model Name and Description */
9039         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
9040
9041         /*
9042          * hba setup may have changed the hba_queue_depth so we need to
9043          * adjust the value of can_queue.
9044          */
9045         shost = pci_get_drvdata(phba->pcidev);
9046         shost->can_queue = phba->cfg_hba_queue_depth - 10;
9047
9048         lpfc_host_attrib_init(shost);
9049
9050         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
9051                 spin_lock_irq(shost->host_lock);
9052                 lpfc_poll_start_timer(phba);
9053                 spin_unlock_irq(shost->host_lock);
9054         }
9055
9056         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9057                         "0428 Perform SCSI scan\n");
9058         /* Send board arrival event to upper layer */
9059         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
9060         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
9061         fc_host_post_vendor_event(shost, fc_get_event_number(),
9062                                   sizeof(adapter_event),
9063                                   (char *) &adapter_event,
9064                                   LPFC_NL_VENDOR_ID);
9065         return;
9066 }
9067
9068 /**
9069  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
9070  * @phba: pointer to lpfc hba data structure.
9071  *
9072  * This routine is invoked to set up the PCI device memory space for device
9073  * with SLI-3 interface spec.
9074  *
9075  * Return codes
9076  *      0 - successful
9077  *      other values - error
9078  **/
9079 static int
9080 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
9081 {
9082         struct pci_dev *pdev = phba->pcidev;
9083         unsigned long bar0map_len, bar2map_len;
9084         int i, hbq_count;
9085         void *ptr;
9086         int error;
9087
9088         if (!pdev)
9089                 return -ENODEV;
9090
9091         /* Set the device DMA mask size */
9092         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9093         if (error)
9094                 error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9095         if (error)
9096                 return error;
9097         error = -ENODEV;
9098
9099         /* Get the bus address of Bar0 and Bar2 and the number of bytes
9100          * required by each mapping.
9101          */
9102         phba->pci_bar0_map = pci_resource_start(pdev, 0);
9103         bar0map_len = pci_resource_len(pdev, 0);
9104
9105         phba->pci_bar2_map = pci_resource_start(pdev, 2);
9106         bar2map_len = pci_resource_len(pdev, 2);
9107
9108         /* Map HBA SLIM to a kernel virtual address. */
9109         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
9110         if (!phba->slim_memmap_p) {
9111                 dev_printk(KERN_ERR, &pdev->dev,
9112                            "ioremap failed for SLIM memory.\n");
9113                 goto out;
9114         }
9115
9116         /* Map HBA Control Registers to a kernel virtual address. */
9117         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
9118         if (!phba->ctrl_regs_memmap_p) {
9119                 dev_printk(KERN_ERR, &pdev->dev,
9120                            "ioremap failed for HBA control registers.\n");
9121                 goto out_iounmap_slim;
9122         }
9123
9124         /* Allocate memory for SLI-2 structures */
9125         phba->slim2p.virt = dma_alloc_coherent(&pdev->dev, SLI2_SLIM_SIZE,
9126                                                &phba->slim2p.phys, GFP_KERNEL);
9127         if (!phba->slim2p.virt)
9128                 goto out_iounmap;
9129
9130         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
9131         phba->mbox_ext = (phba->slim2p.virt +
9132                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
9133         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
9134         phba->IOCBs = (phba->slim2p.virt +
9135                        offsetof(struct lpfc_sli2_slim, IOCBs));
9136
9137         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
9138                                                  lpfc_sli_hbq_size(),
9139                                                  &phba->hbqslimp.phys,
9140                                                  GFP_KERNEL);
9141         if (!phba->hbqslimp.virt)
9142                 goto out_free_slim;
9143
9144         hbq_count = lpfc_sli_hbq_count();
9145         ptr = phba->hbqslimp.virt;
9146         for (i = 0; i < hbq_count; ++i) {
9147                 phba->hbqs[i].hbq_virt = ptr;
9148                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
9149                 ptr += (lpfc_hbq_defs[i]->entry_count *
9150                         sizeof(struct lpfc_hbq_entry));
9151         }
9152         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
9153         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
9154
9155         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
9156
9157         phba->MBslimaddr = phba->slim_memmap_p;
9158         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
9159         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
9160         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
9161         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
9162
9163         return 0;
9164
9165 out_free_slim:
9166         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
9167                           phba->slim2p.virt, phba->slim2p.phys);
9168 out_iounmap:
9169         iounmap(phba->ctrl_regs_memmap_p);
9170 out_iounmap_slim:
9171         iounmap(phba->slim_memmap_p);
9172 out:
9173         return error;
9174 }
9175
9176 /**
9177  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
9178  * @phba: pointer to lpfc hba data structure.
9179  *
9180  * This routine is invoked to unset the PCI device memory space for device
9181  * with SLI-3 interface spec.
9182  **/
9183 static void
9184 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
9185 {
9186         struct pci_dev *pdev;
9187
9188         /* Obtain PCI device reference */
9189         if (!phba->pcidev)
9190                 return;
9191         else
9192                 pdev = phba->pcidev;
9193
9194         /* Free coherent DMA memory allocated */
9195         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
9196                           phba->hbqslimp.virt, phba->hbqslimp.phys);
9197         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
9198                           phba->slim2p.virt, phba->slim2p.phys);
9199
9200         /* I/O memory unmap */
9201         iounmap(phba->ctrl_regs_memmap_p);
9202         iounmap(phba->slim_memmap_p);
9203
9204         return;
9205 }
9206
9207 /**
9208  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
9209  * @phba: pointer to lpfc hba data structure.
9210  *
9211  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
9212  * done and check status.
9213  *
9214  * Return 0 if successful, otherwise -ENODEV.
9215  **/
9216 int
9217 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
9218 {
9219         struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
9220         struct lpfc_register reg_data;
9221         int i, port_error = 0;
9222         uint32_t if_type;
9223
9224         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
9225         memset(&reg_data, 0, sizeof(reg_data));
9226         if (!phba->sli4_hba.PSMPHRregaddr)
9227                 return -ENODEV;
9228
9229         /* Wait up to 30 seconds for the SLI Port POST done and ready */
9230         for (i = 0; i < 3000; i++) {
9231                 if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
9232                         &portsmphr_reg.word0) ||
9233                         (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
9234                         /* Port has a fatal POST error, break out */
9235                         port_error = -ENODEV;
9236                         break;
9237                 }
9238                 if (LPFC_POST_STAGE_PORT_READY ==
9239                     bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
9240                         break;
9241                 msleep(10);
9242         }
9243
9244         /*
9245          * If there was a port error during POST, then don't proceed with
9246          * other register reads as the data may not be valid.  Just exit.
9247          */
9248         if (port_error) {
9249                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9250                         "1408 Port Failed POST - portsmphr=0x%x, "
9251                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
9252                         "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
9253                         portsmphr_reg.word0,
9254                         bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
9255                         bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
9256                         bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
9257                         bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
9258                         bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
9259                         bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
9260                         bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
9261                         bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
9262         } else {
9263                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9264                                 "2534 Device Info: SLIFamily=0x%x, "
9265                                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
9266                                 "SLIHint_2=0x%x, FT=0x%x\n",
9267                                 bf_get(lpfc_sli_intf_sli_family,
9268                                        &phba->sli4_hba.sli_intf),
9269                                 bf_get(lpfc_sli_intf_slirev,
9270                                        &phba->sli4_hba.sli_intf),
9271                                 bf_get(lpfc_sli_intf_if_type,
9272                                        &phba->sli4_hba.sli_intf),
9273                                 bf_get(lpfc_sli_intf_sli_hint1,
9274                                        &phba->sli4_hba.sli_intf),
9275                                 bf_get(lpfc_sli_intf_sli_hint2,
9276                                        &phba->sli4_hba.sli_intf),
9277                                 bf_get(lpfc_sli_intf_func_type,
9278                                        &phba->sli4_hba.sli_intf));
9279                 /*
9280                  * Check for other Port errors during the initialization
9281                  * process.  Fail the load if the port did not come up
9282                  * correctly.
9283                  */
9284                 if_type = bf_get(lpfc_sli_intf_if_type,
9285                                  &phba->sli4_hba.sli_intf);
9286                 switch (if_type) {
9287                 case LPFC_SLI_INTF_IF_TYPE_0:
9288                         phba->sli4_hba.ue_mask_lo =
9289                               readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
9290                         phba->sli4_hba.ue_mask_hi =
9291                               readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
9292                         uerrlo_reg.word0 =
9293                               readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
9294                         uerrhi_reg.word0 =
9295                                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
9296                         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
9297                             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
9298                                 lpfc_printf_log(phba, KERN_ERR,
9299                                                 LOG_TRACE_EVENT,
9300                                                 "1422 Unrecoverable Error "
9301                                                 "Detected during POST "
9302                                                 "uerr_lo_reg=0x%x, "
9303                                                 "uerr_hi_reg=0x%x, "
9304                                                 "ue_mask_lo_reg=0x%x, "
9305                                                 "ue_mask_hi_reg=0x%x\n",
9306                                                 uerrlo_reg.word0,
9307                                                 uerrhi_reg.word0,
9308                                                 phba->sli4_hba.ue_mask_lo,
9309                                                 phba->sli4_hba.ue_mask_hi);
9310                                 port_error = -ENODEV;
9311                         }
9312                         break;
9313                 case LPFC_SLI_INTF_IF_TYPE_2:
9314                 case LPFC_SLI_INTF_IF_TYPE_6:
9315                         /* Final checks.  The port status should be clean. */
9316                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
9317                                 &reg_data.word0) ||
9318                                 (bf_get(lpfc_sliport_status_err, &reg_data) &&
9319                                  !bf_get(lpfc_sliport_status_rn, &reg_data))) {
9320                                 phba->work_status[0] =
9321                                         readl(phba->sli4_hba.u.if_type2.
9322                                               ERR1regaddr);
9323                                 phba->work_status[1] =
9324                                         readl(phba->sli4_hba.u.if_type2.
9325                                               ERR2regaddr);
9326                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9327                                         "2888 Unrecoverable port error "
9328                                         "following POST: port status reg "
9329                                         "0x%x, port_smphr reg 0x%x, "
9330                                         "error 1=0x%x, error 2=0x%x\n",
9331                                         reg_data.word0,
9332                                         portsmphr_reg.word0,
9333                                         phba->work_status[0],
9334                                         phba->work_status[1]);
9335                                 port_error = -ENODEV;
9336                         }
9337                         break;
9338                 case LPFC_SLI_INTF_IF_TYPE_1:
9339                 default:
9340                         break;
9341                 }
9342         }
9343         return port_error;
9344 }
9345
9346 /**
9347  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
9348  * @phba: pointer to lpfc hba data structure.
9349  * @if_type:  The SLI4 interface type getting configured.
9350  *
9351  * This routine is invoked to set up SLI4 BAR0 PCI config space register
9352  * memory map.
9353  **/
9354 static void
9355 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
9356 {
9357         switch (if_type) {
9358         case LPFC_SLI_INTF_IF_TYPE_0:
9359                 phba->sli4_hba.u.if_type0.UERRLOregaddr =
9360                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
9361                 phba->sli4_hba.u.if_type0.UERRHIregaddr =
9362                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
9363                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
9364                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
9365                 phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
9366                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
9367                 phba->sli4_hba.SLIINTFregaddr =
9368                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
9369                 break;
9370         case LPFC_SLI_INTF_IF_TYPE_2:
9371                 phba->sli4_hba.u.if_type2.EQDregaddr =
9372                         phba->sli4_hba.conf_regs_memmap_p +
9373                                                 LPFC_CTL_PORT_EQ_DELAY_OFFSET;
9374                 phba->sli4_hba.u.if_type2.ERR1regaddr =
9375                         phba->sli4_hba.conf_regs_memmap_p +
9376                                                 LPFC_CTL_PORT_ER1_OFFSET;
9377                 phba->sli4_hba.u.if_type2.ERR2regaddr =
9378                         phba->sli4_hba.conf_regs_memmap_p +
9379                                                 LPFC_CTL_PORT_ER2_OFFSET;
9380                 phba->sli4_hba.u.if_type2.CTRLregaddr =
9381                         phba->sli4_hba.conf_regs_memmap_p +
9382                                                 LPFC_CTL_PORT_CTL_OFFSET;
9383                 phba->sli4_hba.u.if_type2.STATUSregaddr =
9384                         phba->sli4_hba.conf_regs_memmap_p +
9385                                                 LPFC_CTL_PORT_STA_OFFSET;
9386                 phba->sli4_hba.SLIINTFregaddr =
9387                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
9388                 phba->sli4_hba.PSMPHRregaddr =
9389                         phba->sli4_hba.conf_regs_memmap_p +
9390                                                 LPFC_CTL_PORT_SEM_OFFSET;
9391                 phba->sli4_hba.RQDBregaddr =
9392                         phba->sli4_hba.conf_regs_memmap_p +
9393                                                 LPFC_ULP0_RQ_DOORBELL;
9394                 phba->sli4_hba.WQDBregaddr =
9395                         phba->sli4_hba.conf_regs_memmap_p +
9396                                                 LPFC_ULP0_WQ_DOORBELL;
9397                 phba->sli4_hba.CQDBregaddr =
9398                         phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
9399                 phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
9400                 phba->sli4_hba.MQDBregaddr =
9401                         phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
9402                 phba->sli4_hba.BMBXregaddr =
9403                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
9404                 break;
9405         case LPFC_SLI_INTF_IF_TYPE_6:
9406                 phba->sli4_hba.u.if_type2.EQDregaddr =
9407                         phba->sli4_hba.conf_regs_memmap_p +
9408                                                 LPFC_CTL_PORT_EQ_DELAY_OFFSET;
9409                 phba->sli4_hba.u.if_type2.ERR1regaddr =
9410                         phba->sli4_hba.conf_regs_memmap_p +
9411                                                 LPFC_CTL_PORT_ER1_OFFSET;
9412                 phba->sli4_hba.u.if_type2.ERR2regaddr =
9413                         phba->sli4_hba.conf_regs_memmap_p +
9414                                                 LPFC_CTL_PORT_ER2_OFFSET;
9415                 phba->sli4_hba.u.if_type2.CTRLregaddr =
9416                         phba->sli4_hba.conf_regs_memmap_p +
9417                                                 LPFC_CTL_PORT_CTL_OFFSET;
9418                 phba->sli4_hba.u.if_type2.STATUSregaddr =
9419                         phba->sli4_hba.conf_regs_memmap_p +
9420                                                 LPFC_CTL_PORT_STA_OFFSET;
9421                 phba->sli4_hba.PSMPHRregaddr =
9422                         phba->sli4_hba.conf_regs_memmap_p +
9423                                                 LPFC_CTL_PORT_SEM_OFFSET;
9424                 phba->sli4_hba.BMBXregaddr =
9425                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
9426                 break;
9427         case LPFC_SLI_INTF_IF_TYPE_1:
9428         default:
9429                 dev_printk(KERN_ERR, &phba->pcidev->dev,
9430                            "FATAL - unsupported SLI4 interface type - %d\n",
9431                            if_type);
9432                 break;
9433         }
9434 }
9435
9436 /**
9437  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
9438  * @phba: pointer to lpfc hba data structure.
9439  * @if_type: sli if type to operate on.
9440  *
9441  * This routine is invoked to set up SLI4 BAR1 register memory map.
9442  **/
9443 static void
9444 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
9445 {
9446         switch (if_type) {
9447         case LPFC_SLI_INTF_IF_TYPE_0:
9448                 phba->sli4_hba.PSMPHRregaddr =
9449                         phba->sli4_hba.ctrl_regs_memmap_p +
9450                         LPFC_SLIPORT_IF0_SMPHR;
9451                 phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
9452                         LPFC_HST_ISR0;
9453                 phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
9454                         LPFC_HST_IMR0;
9455                 phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
9456                         LPFC_HST_ISCR0;
9457                 break;
9458         case LPFC_SLI_INTF_IF_TYPE_6:
9459                 phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9460                         LPFC_IF6_RQ_DOORBELL;
9461                 phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9462                         LPFC_IF6_WQ_DOORBELL;
9463                 phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9464                         LPFC_IF6_CQ_DOORBELL;
9465                 phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9466                         LPFC_IF6_EQ_DOORBELL;
9467                 phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
9468                         LPFC_IF6_MQ_DOORBELL;
9469                 break;
9470         case LPFC_SLI_INTF_IF_TYPE_2:
9471         case LPFC_SLI_INTF_IF_TYPE_1:
9472         default:
9473                 dev_err(&phba->pcidev->dev,
9474                            "FATAL - unsupported SLI4 interface type - %d\n",
9475                            if_type);
9476                 break;
9477         }
9478 }
9479
9480 /**
9481  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
9482  * @phba: pointer to lpfc hba data structure.
9483  * @vf: virtual function number
9484  *
9485  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
9486  * based on the given viftual function number, @vf.
9487  *
9488  * Return 0 if successful, otherwise -ENODEV.
9489  **/
9490 static int
9491 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
9492 {
9493         if (vf > LPFC_VIR_FUNC_MAX)
9494                 return -ENODEV;
9495
9496         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9497                                 vf * LPFC_VFR_PAGE_SIZE +
9498                                         LPFC_ULP0_RQ_DOORBELL);
9499         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9500                                 vf * LPFC_VFR_PAGE_SIZE +
9501                                         LPFC_ULP0_WQ_DOORBELL);
9502         phba->sli4_hba.CQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9503                                 vf * LPFC_VFR_PAGE_SIZE +
9504                                         LPFC_EQCQ_DOORBELL);
9505         phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
9506         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9507                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
9508         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
9509                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
9510         return 0;
9511 }
9512
9513 /**
9514  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
9515  * @phba: pointer to lpfc hba data structure.
9516  *
9517  * This routine is invoked to create the bootstrap mailbox
9518  * region consistent with the SLI-4 interface spec.  This
9519  * routine allocates all memory necessary to communicate
9520  * mailbox commands to the port and sets up all alignment
9521  * needs.  No locks are expected to be held when calling
9522  * this routine.
9523  *
9524  * Return codes
9525  *      0 - successful
9526  *      -ENOMEM - could not allocated memory.
9527  **/
9528 static int
9529 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
9530 {
9531         uint32_t bmbx_size;
9532         struct lpfc_dmabuf *dmabuf;
9533         struct dma_address *dma_address;
9534         uint32_t pa_addr;
9535         uint64_t phys_addr;
9536
9537         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
9538         if (!dmabuf)
9539                 return -ENOMEM;
9540
9541         /*
9542          * The bootstrap mailbox region is comprised of 2 parts
9543          * plus an alignment restriction of 16 bytes.
9544          */
9545         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
9546         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, bmbx_size,
9547                                           &dmabuf->phys, GFP_KERNEL);
9548         if (!dmabuf->virt) {
9549                 kfree(dmabuf);
9550                 return -ENOMEM;
9551         }
9552
9553         /*
9554          * Initialize the bootstrap mailbox pointers now so that the register
9555          * operations are simple later.  The mailbox dma address is required
9556          * to be 16-byte aligned.  Also align the virtual memory as each
9557          * maibox is copied into the bmbx mailbox region before issuing the
9558          * command to the port.
9559          */
9560         phba->sli4_hba.bmbx.dmabuf = dmabuf;
9561         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
9562
9563         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
9564                                               LPFC_ALIGN_16_BYTE);
9565         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
9566                                               LPFC_ALIGN_16_BYTE);
9567
9568         /*
9569          * Set the high and low physical addresses now.  The SLI4 alignment
9570          * requirement is 16 bytes and the mailbox is posted to the port
9571          * as two 30-bit addresses.  The other data is a bit marking whether
9572          * the 30-bit address is the high or low address.
9573          * Upcast bmbx aphys to 64bits so shift instruction compiles
9574          * clean on 32 bit machines.
9575          */
9576         dma_address = &phba->sli4_hba.bmbx.dma_address;
9577         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
9578         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
9579         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
9580                                            LPFC_BMBX_BIT1_ADDR_HI);
9581
9582         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
9583         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
9584                                            LPFC_BMBX_BIT1_ADDR_LO);
9585         return 0;
9586 }
9587
9588 /**
9589  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
9590  * @phba: pointer to lpfc hba data structure.
9591  *
9592  * This routine is invoked to teardown the bootstrap mailbox
9593  * region and release all host resources. This routine requires
9594  * the caller to ensure all mailbox commands recovered, no
9595  * additional mailbox comands are sent, and interrupts are disabled
9596  * before calling this routine.
9597  *
9598  **/
9599 static void
9600 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
9601 {
9602         dma_free_coherent(&phba->pcidev->dev,
9603                           phba->sli4_hba.bmbx.bmbx_size,
9604                           phba->sli4_hba.bmbx.dmabuf->virt,
9605                           phba->sli4_hba.bmbx.dmabuf->phys);
9606
9607         kfree(phba->sli4_hba.bmbx.dmabuf);
9608         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
9609 }
9610
9611 static const char * const lpfc_topo_to_str[] = {
9612         "Loop then P2P",
9613         "Loopback",
9614         "P2P Only",
9615         "Unsupported",
9616         "Loop Only",
9617         "Unsupported",
9618         "P2P then Loop",
9619 };
9620
9621 #define LINK_FLAGS_DEF  0x0
9622 #define LINK_FLAGS_P2P  0x1
9623 #define LINK_FLAGS_LOOP 0x2
9624 /**
9625  * lpfc_map_topology - Map the topology read from READ_CONFIG
9626  * @phba: pointer to lpfc hba data structure.
9627  * @rd_config: pointer to read config data
9628  *
9629  * This routine is invoked to map the topology values as read
9630  * from the read config mailbox command. If the persistent
9631  * topology feature is supported, the firmware will provide the
9632  * saved topology information to be used in INIT_LINK
9633  **/
9634 static void
9635 lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config)
9636 {
9637         u8 ptv, tf, pt;
9638
9639         ptv = bf_get(lpfc_mbx_rd_conf_ptv, rd_config);
9640         tf = bf_get(lpfc_mbx_rd_conf_tf, rd_config);
9641         pt = bf_get(lpfc_mbx_rd_conf_pt, rd_config);
9642
9643         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
9644                         "2027 Read Config Data : ptv:0x%x, tf:0x%x pt:0x%x",
9645                          ptv, tf, pt);
9646         if (!ptv) {
9647                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
9648                                 "2019 FW does not support persistent topology "
9649                                 "Using driver parameter defined value [%s]",
9650                                 lpfc_topo_to_str[phba->cfg_topology]);
9651                 return;
9652         }
9653         /* FW supports persistent topology - override module parameter value */
9654         phba->hba_flag |= HBA_PERSISTENT_TOPO;
9655
9656         /* if ASIC_GEN_NUM >= 0xC) */
9657         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
9658                     LPFC_SLI_INTF_IF_TYPE_6) ||
9659             (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
9660                     LPFC_SLI_INTF_FAMILY_G6)) {
9661                 if (!tf) {
9662                         phba->cfg_topology = ((pt == LINK_FLAGS_LOOP)
9663                                         ? FLAGS_TOPOLOGY_MODE_LOOP
9664                                         : FLAGS_TOPOLOGY_MODE_PT_PT);
9665                 } else {
9666                         phba->hba_flag &= ~HBA_PERSISTENT_TOPO;
9667                 }
9668         } else { /* G5 */
9669                 if (tf) {
9670                         /* If topology failover set - pt is '0' or '1' */
9671                         phba->cfg_topology = (pt ? FLAGS_TOPOLOGY_MODE_PT_LOOP :
9672                                               FLAGS_TOPOLOGY_MODE_LOOP_PT);
9673                 } else {
9674                         phba->cfg_topology = ((pt == LINK_FLAGS_P2P)
9675                                         ? FLAGS_TOPOLOGY_MODE_PT_PT
9676                                         : FLAGS_TOPOLOGY_MODE_LOOP);
9677                 }
9678         }
9679         if (phba->hba_flag & HBA_PERSISTENT_TOPO) {
9680                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
9681                                 "2020 Using persistent topology value [%s]",
9682                                 lpfc_topo_to_str[phba->cfg_topology]);
9683         } else {
9684                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
9685                                 "2021 Invalid topology values from FW "
9686                                 "Using driver parameter defined value [%s]",
9687                                 lpfc_topo_to_str[phba->cfg_topology]);
9688         }
9689 }
9690
9691 /**
9692  * lpfc_sli4_read_config - Get the config parameters.
9693  * @phba: pointer to lpfc hba data structure.
9694  *
9695  * This routine is invoked to read the configuration parameters from the HBA.
9696  * The configuration parameters are used to set the base and maximum values
9697  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
9698  * allocation for the port.
9699  *
9700  * Return codes
9701  *      0 - successful
9702  *      -ENOMEM - No available memory
9703  *      -EIO - The mailbox failed to complete successfully.
9704  **/
9705 int
9706 lpfc_sli4_read_config(struct lpfc_hba *phba)
9707 {
9708         LPFC_MBOXQ_t *pmb;
9709         struct lpfc_mbx_read_config *rd_config;
9710         union  lpfc_sli4_cfg_shdr *shdr;
9711         uint32_t shdr_status, shdr_add_status;
9712         struct lpfc_mbx_get_func_cfg *get_func_cfg;
9713         struct lpfc_rsrc_desc_fcfcoe *desc;
9714         char *pdesc_0;
9715         uint16_t forced_link_speed;
9716         uint32_t if_type, qmin;
9717         int length, i, rc = 0, rc2;
9718
9719         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9720         if (!pmb) {
9721                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9722                                 "2011 Unable to allocate memory for issuing "
9723                                 "SLI_CONFIG_SPECIAL mailbox command\n");
9724                 return -ENOMEM;
9725         }
9726
9727         lpfc_read_config(phba, pmb);
9728
9729         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
9730         if (rc != MBX_SUCCESS) {
9731                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9732                                 "2012 Mailbox failed , mbxCmd x%x "
9733                                 "READ_CONFIG, mbxStatus x%x\n",
9734                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
9735                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
9736                 rc = -EIO;
9737         } else {
9738                 rd_config = &pmb->u.mqe.un.rd_config;
9739                 if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
9740                         phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
9741                         phba->sli4_hba.lnk_info.lnk_tp =
9742                                 bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
9743                         phba->sli4_hba.lnk_info.lnk_no =
9744                                 bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
9745                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
9746                                         "3081 lnk_type:%d, lnk_numb:%d\n",
9747                                         phba->sli4_hba.lnk_info.lnk_tp,
9748                                         phba->sli4_hba.lnk_info.lnk_no);
9749                 } else
9750                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
9751                                         "3082 Mailbox (x%x) returned ldv:x0\n",
9752                                         bf_get(lpfc_mqe_command, &pmb->u.mqe));
9753                 if (bf_get(lpfc_mbx_rd_conf_bbscn_def, rd_config)) {
9754                         phba->bbcredit_support = 1;
9755                         phba->sli4_hba.bbscn_params.word0 = rd_config->word8;
9756                 }
9757
9758                 phba->sli4_hba.conf_trunk =
9759                         bf_get(lpfc_mbx_rd_conf_trunk, rd_config);
9760                 phba->sli4_hba.extents_in_use =
9761                         bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
9762                 phba->sli4_hba.max_cfg_param.max_xri =
9763                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
9764                 /* Reduce resource usage in kdump environment */
9765                 if (is_kdump_kernel() &&
9766                     phba->sli4_hba.max_cfg_param.max_xri > 512)
9767                         phba->sli4_hba.max_cfg_param.max_xri = 512;
9768                 phba->sli4_hba.max_cfg_param.xri_base =
9769                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
9770                 phba->sli4_hba.max_cfg_param.max_vpi =
9771                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
9772                 /* Limit the max we support */
9773                 if (phba->sli4_hba.max_cfg_param.max_vpi > LPFC_MAX_VPORTS)
9774                         phba->sli4_hba.max_cfg_param.max_vpi = LPFC_MAX_VPORTS;
9775                 phba->sli4_hba.max_cfg_param.vpi_base =
9776                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
9777                 phba->sli4_hba.max_cfg_param.max_rpi =
9778                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
9779                 phba->sli4_hba.max_cfg_param.rpi_base =
9780                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
9781                 phba->sli4_hba.max_cfg_param.max_vfi =
9782                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
9783                 phba->sli4_hba.max_cfg_param.vfi_base =
9784                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
9785                 phba->sli4_hba.max_cfg_param.max_fcfi =
9786                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
9787                 phba->sli4_hba.max_cfg_param.max_eq =
9788                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
9789                 phba->sli4_hba.max_cfg_param.max_rq =
9790                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
9791                 phba->sli4_hba.max_cfg_param.max_wq =
9792                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
9793                 phba->sli4_hba.max_cfg_param.max_cq =
9794                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
9795                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
9796                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
9797                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
9798                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
9799                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
9800                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
9801                 phba->max_vports = phba->max_vpi;
9802
9803                 /* Next decide on FPIN or Signal E2E CGN support
9804                  * For congestion alarms and warnings valid combination are:
9805                  * 1. FPIN alarms / FPIN warnings
9806                  * 2. Signal alarms / Signal warnings
9807                  * 3. FPIN alarms / Signal warnings
9808                  * 4. Signal alarms / FPIN warnings
9809                  *
9810                  * Initialize the adapter frequency to 100 mSecs
9811                  */
9812                 phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;
9813                 phba->cgn_reg_signal = EDC_CG_SIG_NOTSUPPORTED;
9814                 phba->cgn_sig_freq = lpfc_fabric_cgn_frequency;
9815
9816                 if (lpfc_use_cgn_signal) {
9817                         if (bf_get(lpfc_mbx_rd_conf_wcs, rd_config)) {
9818                                 phba->cgn_reg_signal = EDC_CG_SIG_WARN_ONLY;
9819                                 phba->cgn_reg_fpin &= ~LPFC_CGN_FPIN_WARN;
9820                         }
9821                         if (bf_get(lpfc_mbx_rd_conf_acs, rd_config)) {
9822                                 /* MUST support both alarm and warning
9823                                  * because EDC does not support alarm alone.
9824                                  */
9825                                 if (phba->cgn_reg_signal !=
9826                                     EDC_CG_SIG_WARN_ONLY) {
9827                                         /* Must support both or none */
9828                                         phba->cgn_reg_fpin = LPFC_CGN_FPIN_BOTH;
9829                                         phba->cgn_reg_signal =
9830                                                 EDC_CG_SIG_NOTSUPPORTED;
9831                                 } else {
9832                                         phba->cgn_reg_signal =
9833                                                 EDC_CG_SIG_WARN_ALARM;
9834                                         phba->cgn_reg_fpin =
9835                                                 LPFC_CGN_FPIN_NONE;
9836                                 }
9837                         }
9838                 }
9839
9840                 /* Set the congestion initial signal and fpin values. */
9841                 phba->cgn_init_reg_fpin = phba->cgn_reg_fpin;
9842                 phba->cgn_init_reg_signal = phba->cgn_reg_signal;
9843
9844                 lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
9845                                 "6446 READ_CONFIG reg_sig x%x reg_fpin:x%x\n",
9846                                 phba->cgn_reg_signal, phba->cgn_reg_fpin);
9847
9848                 lpfc_map_topology(phba, rd_config);
9849                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
9850                                 "2003 cfg params Extents? %d "
9851                                 "XRI(B:%d M:%d), "
9852                                 "VPI(B:%d M:%d) "
9853                                 "VFI(B:%d M:%d) "
9854                                 "RPI(B:%d M:%d) "
9855                                 "FCFI:%d EQ:%d CQ:%d WQ:%d RQ:%d lmt:x%x\n",
9856                                 phba->sli4_hba.extents_in_use,
9857                                 phba->sli4_hba.max_cfg_param.xri_base,
9858                                 phba->sli4_hba.max_cfg_param.max_xri,
9859                                 phba->sli4_hba.max_cfg_param.vpi_base,
9860                                 phba->sli4_hba.max_cfg_param.max_vpi,
9861                                 phba->sli4_hba.max_cfg_param.vfi_base,
9862                                 phba->sli4_hba.max_cfg_param.max_vfi,
9863                                 phba->sli4_hba.max_cfg_param.rpi_base,
9864                                 phba->sli4_hba.max_cfg_param.max_rpi,
9865                                 phba->sli4_hba.max_cfg_param.max_fcfi,
9866                                 phba->sli4_hba.max_cfg_param.max_eq,
9867                                 phba->sli4_hba.max_cfg_param.max_cq,
9868                                 phba->sli4_hba.max_cfg_param.max_wq,
9869                                 phba->sli4_hba.max_cfg_param.max_rq,
9870                                 phba->lmt);
9871
9872                 /*
9873                  * Calculate queue resources based on how
9874                  * many WQ/CQ/EQs are available.
9875                  */
9876                 qmin = phba->sli4_hba.max_cfg_param.max_wq;
9877                 if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
9878                         qmin = phba->sli4_hba.max_cfg_param.max_cq;
9879                 if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
9880                         qmin = phba->sli4_hba.max_cfg_param.max_eq;
9881                 /*
9882                  * Whats left after this can go toward NVME / FCP.
9883                  * The minus 4 accounts for ELS, NVME LS, MBOX
9884                  * plus one extra. When configured for
9885                  * NVMET, FCP io channel WQs are not created.
9886                  */
9887                 qmin -= 4;
9888
9889                 /* Check to see if there is enough for NVME */
9890                 if ((phba->cfg_irq_chann > qmin) ||
9891                     (phba->cfg_hdw_queue > qmin)) {
9892                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9893                                         "2005 Reducing Queues - "
9894                                         "FW resource limitation: "
9895                                         "WQ %d CQ %d EQ %d: min %d: "
9896                                         "IRQ %d HDWQ %d\n",
9897                                         phba->sli4_hba.max_cfg_param.max_wq,
9898                                         phba->sli4_hba.max_cfg_param.max_cq,
9899                                         phba->sli4_hba.max_cfg_param.max_eq,
9900                                         qmin, phba->cfg_irq_chann,
9901                                         phba->cfg_hdw_queue);
9902
9903                         if (phba->cfg_irq_chann > qmin)
9904                                 phba->cfg_irq_chann = qmin;
9905                         if (phba->cfg_hdw_queue > qmin)
9906                                 phba->cfg_hdw_queue = qmin;
9907                 }
9908         }
9909
9910         if (rc)
9911                 goto read_cfg_out;
9912
9913         /* Update link speed if forced link speed is supported */
9914         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
9915         if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
9916                 forced_link_speed =
9917                         bf_get(lpfc_mbx_rd_conf_link_speed, rd_config);
9918                 if (forced_link_speed) {
9919                         phba->hba_flag |= HBA_FORCED_LINK_SPEED;
9920
9921                         switch (forced_link_speed) {
9922                         case LINK_SPEED_1G:
9923                                 phba->cfg_link_speed =
9924                                         LPFC_USER_LINK_SPEED_1G;
9925                                 break;
9926                         case LINK_SPEED_2G:
9927                                 phba->cfg_link_speed =
9928                                         LPFC_USER_LINK_SPEED_2G;
9929                                 break;
9930                         case LINK_SPEED_4G:
9931                                 phba->cfg_link_speed =
9932                                         LPFC_USER_LINK_SPEED_4G;
9933                                 break;
9934                         case LINK_SPEED_8G:
9935                                 phba->cfg_link_speed =
9936                                         LPFC_USER_LINK_SPEED_8G;
9937                                 break;
9938                         case LINK_SPEED_10G:
9939                                 phba->cfg_link_speed =
9940                                         LPFC_USER_LINK_SPEED_10G;
9941                                 break;
9942                         case LINK_SPEED_16G:
9943                                 phba->cfg_link_speed =
9944                                         LPFC_USER_LINK_SPEED_16G;
9945                                 break;
9946                         case LINK_SPEED_32G:
9947                                 phba->cfg_link_speed =
9948                                         LPFC_USER_LINK_SPEED_32G;
9949                                 break;
9950                         case LINK_SPEED_64G:
9951                                 phba->cfg_link_speed =
9952                                         LPFC_USER_LINK_SPEED_64G;
9953                                 break;
9954                         case 0xffff:
9955                                 phba->cfg_link_speed =
9956                                         LPFC_USER_LINK_SPEED_AUTO;
9957                                 break;
9958                         default:
9959                                 lpfc_printf_log(phba, KERN_ERR,
9960                                                 LOG_TRACE_EVENT,
9961                                                 "0047 Unrecognized link "
9962                                                 "speed : %d\n",
9963                                                 forced_link_speed);
9964                                 phba->cfg_link_speed =
9965                                         LPFC_USER_LINK_SPEED_AUTO;
9966                         }
9967                 }
9968         }
9969
9970         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
9971         length = phba->sli4_hba.max_cfg_param.max_xri -
9972                         lpfc_sli4_get_els_iocb_cnt(phba);
9973         if (phba->cfg_hba_queue_depth > length) {
9974                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
9975                                 "3361 HBA queue depth changed from %d to %d\n",
9976                                 phba->cfg_hba_queue_depth, length);
9977                 phba->cfg_hba_queue_depth = length;
9978         }
9979
9980         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
9981             LPFC_SLI_INTF_IF_TYPE_2)
9982                 goto read_cfg_out;
9983
9984         /* get the pf# and vf# for SLI4 if_type 2 port */
9985         length = (sizeof(struct lpfc_mbx_get_func_cfg) -
9986                   sizeof(struct lpfc_sli4_cfg_mhdr));
9987         lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
9988                          LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
9989                          length, LPFC_SLI4_MBX_EMBED);
9990
9991         rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
9992         shdr = (union lpfc_sli4_cfg_shdr *)
9993                                 &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
9994         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9995         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9996         if (rc2 || shdr_status || shdr_add_status) {
9997                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9998                                 "3026 Mailbox failed , mbxCmd x%x "
9999                                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
10000                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
10001                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
10002                 goto read_cfg_out;
10003         }
10004
10005         /* search for fc_fcoe resrouce descriptor */
10006         get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
10007
10008         pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];
10009         desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;
10010         length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);
10011         if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)
10012                 length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;
10013         else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)
10014                 goto read_cfg_out;
10015
10016         for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
10017                 desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);
10018                 if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
10019                     bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {
10020                         phba->sli4_hba.iov.pf_number =
10021                                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
10022                         phba->sli4_hba.iov.vf_number =
10023                                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
10024                         break;
10025                 }
10026         }
10027
10028         if (i < LPFC_RSRC_DESC_MAX_NUM)
10029                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
10030                                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
10031                                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
10032                                 phba->sli4_hba.iov.vf_number);
10033         else
10034                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10035                                 "3028 GET_FUNCTION_CONFIG: failed to find "
10036                                 "Resource Descriptor:x%x\n",
10037                                 LPFC_RSRC_DESC_TYPE_FCFCOE);
10038
10039 read_cfg_out:
10040         mempool_free(pmb, phba->mbox_mem_pool);
10041         return rc;
10042 }
10043
10044 /**
10045  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
10046  * @phba: pointer to lpfc hba data structure.
10047  *
10048  * This routine is invoked to setup the port-side endian order when
10049  * the port if_type is 0.  This routine has no function for other
10050  * if_types.
10051  *
10052  * Return codes
10053  *      0 - successful
10054  *      -ENOMEM - No available memory
10055  *      -EIO - The mailbox failed to complete successfully.
10056  **/
10057 static int
10058 lpfc_setup_endian_order(struct lpfc_hba *phba)
10059 {
10060         LPFC_MBOXQ_t *mboxq;
10061         uint32_t if_type, rc = 0;
10062         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
10063                                       HOST_ENDIAN_HIGH_WORD1};
10064
10065         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10066         switch (if_type) {
10067         case LPFC_SLI_INTF_IF_TYPE_0:
10068                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
10069                                                        GFP_KERNEL);
10070                 if (!mboxq) {
10071                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10072                                         "0492 Unable to allocate memory for "
10073                                         "issuing SLI_CONFIG_SPECIAL mailbox "
10074                                         "command\n");
10075                         return -ENOMEM;
10076                 }
10077
10078                 /*
10079                  * The SLI4_CONFIG_SPECIAL mailbox command requires the first
10080                  * two words to contain special data values and no other data.
10081                  */
10082                 memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
10083                 memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
10084                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
10085                 if (rc != MBX_SUCCESS) {
10086                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10087                                         "0493 SLI_CONFIG_SPECIAL mailbox "
10088                                         "failed with status x%x\n",
10089                                         rc);
10090                         rc = -EIO;
10091                 }
10092                 mempool_free(mboxq, phba->mbox_mem_pool);
10093                 break;
10094         case LPFC_SLI_INTF_IF_TYPE_6:
10095         case LPFC_SLI_INTF_IF_TYPE_2:
10096         case LPFC_SLI_INTF_IF_TYPE_1:
10097         default:
10098                 break;
10099         }
10100         return rc;
10101 }
10102
10103 /**
10104  * lpfc_sli4_queue_verify - Verify and update EQ counts
10105  * @phba: pointer to lpfc hba data structure.
10106  *
10107  * This routine is invoked to check the user settable queue counts for EQs.
10108  * After this routine is called the counts will be set to valid values that
10109  * adhere to the constraints of the system's interrupt vectors and the port's
10110  * queue resources.
10111  *
10112  * Return codes
10113  *      0 - successful
10114  *      -ENOMEM - No available memory
10115  **/
10116 static int
10117 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
10118 {
10119         /*
10120          * Sanity check for configured queue parameters against the run-time
10121          * device parameters
10122          */
10123
10124         if (phba->nvmet_support) {
10125                 if (phba->cfg_hdw_queue < phba->cfg_nvmet_mrq)
10126                         phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
10127                 if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
10128                         phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
10129         }
10130
10131         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10132                         "2574 IO channels: hdwQ %d IRQ %d MRQ: %d\n",
10133                         phba->cfg_hdw_queue, phba->cfg_irq_chann,
10134                         phba->cfg_nvmet_mrq);
10135
10136         /* Get EQ depth from module parameter, fake the default for now */
10137         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
10138         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
10139
10140         /* Get CQ depth from module parameter, fake the default for now */
10141         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
10142         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
10143         return 0;
10144 }
10145
10146 static int
10147 lpfc_alloc_io_wq_cq(struct lpfc_hba *phba, int idx)
10148 {
10149         struct lpfc_queue *qdesc;
10150         u32 wqesize;
10151         int cpu;
10152
10153         cpu = lpfc_find_cpu_handle(phba, idx, LPFC_FIND_BY_HDWQ);
10154         /* Create Fast Path IO CQs */
10155         if (phba->enab_exp_wqcq_pages)
10156                 /* Increase the CQ size when WQEs contain an embedded cdb */
10157                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
10158                                               phba->sli4_hba.cq_esize,
10159                                               LPFC_CQE_EXP_COUNT, cpu);
10160
10161         else
10162                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10163                                               phba->sli4_hba.cq_esize,
10164                                               phba->sli4_hba.cq_ecount, cpu);
10165         if (!qdesc) {
10166                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10167                                 "0499 Failed allocate fast-path IO CQ (%d)\n",
10168                                 idx);
10169                 return 1;
10170         }
10171         qdesc->qe_valid = 1;
10172         qdesc->hdwq = idx;
10173         qdesc->chann = cpu;
10174         phba->sli4_hba.hdwq[idx].io_cq = qdesc;
10175
10176         /* Create Fast Path IO WQs */
10177         if (phba->enab_exp_wqcq_pages) {
10178                 /* Increase the WQ size when WQEs contain an embedded cdb */
10179                 wqesize = (phba->fcp_embed_io) ?
10180                         LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
10181                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
10182                                               wqesize,
10183                                               LPFC_WQE_EXP_COUNT, cpu);
10184         } else
10185                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10186                                               phba->sli4_hba.wq_esize,
10187                                               phba->sli4_hba.wq_ecount, cpu);
10188
10189         if (!qdesc) {
10190                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10191                                 "0503 Failed allocate fast-path IO WQ (%d)\n",
10192                                 idx);
10193                 return 1;
10194         }
10195         qdesc->hdwq = idx;
10196         qdesc->chann = cpu;
10197         phba->sli4_hba.hdwq[idx].io_wq = qdesc;
10198         list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
10199         return 0;
10200 }
10201
10202 /**
10203  * lpfc_sli4_queue_create - Create all the SLI4 queues
10204  * @phba: pointer to lpfc hba data structure.
10205  *
10206  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
10207  * operation. For each SLI4 queue type, the parameters such as queue entry
10208  * count (queue depth) shall be taken from the module parameter. For now,
10209  * we just use some constant number as place holder.
10210  *
10211  * Return codes
10212  *      0 - successful
10213  *      -ENOMEM - No availble memory
10214  *      -EIO - The mailbox failed to complete successfully.
10215  **/
10216 int
10217 lpfc_sli4_queue_create(struct lpfc_hba *phba)
10218 {
10219         struct lpfc_queue *qdesc;
10220         int idx, cpu, eqcpu;
10221         struct lpfc_sli4_hdw_queue *qp;
10222         struct lpfc_vector_map_info *cpup;
10223         struct lpfc_vector_map_info *eqcpup;
10224         struct lpfc_eq_intr_info *eqi;
10225
10226         /*
10227          * Create HBA Record arrays.
10228          * Both NVME and FCP will share that same vectors / EQs
10229          */
10230         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
10231         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
10232         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
10233         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
10234         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
10235         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
10236         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
10237         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
10238         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
10239         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
10240
10241         if (!phba->sli4_hba.hdwq) {
10242                 phba->sli4_hba.hdwq = kcalloc(
10243                         phba->cfg_hdw_queue, sizeof(struct lpfc_sli4_hdw_queue),
10244                         GFP_KERNEL);
10245                 if (!phba->sli4_hba.hdwq) {
10246                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10247                                         "6427 Failed allocate memory for "
10248                                         "fast-path Hardware Queue array\n");
10249                         goto out_error;
10250                 }
10251                 /* Prepare hardware queues to take IO buffers */
10252                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10253                         qp = &phba->sli4_hba.hdwq[idx];
10254                         spin_lock_init(&qp->io_buf_list_get_lock);
10255                         spin_lock_init(&qp->io_buf_list_put_lock);
10256                         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
10257                         INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
10258                         qp->get_io_bufs = 0;
10259                         qp->put_io_bufs = 0;
10260                         qp->total_io_bufs = 0;
10261                         spin_lock_init(&qp->abts_io_buf_list_lock);
10262                         INIT_LIST_HEAD(&qp->lpfc_abts_io_buf_list);
10263                         qp->abts_scsi_io_bufs = 0;
10264                         qp->abts_nvme_io_bufs = 0;
10265                         INIT_LIST_HEAD(&qp->sgl_list);
10266                         INIT_LIST_HEAD(&qp->cmd_rsp_buf_list);
10267                         spin_lock_init(&qp->hdwq_lock);
10268                 }
10269         }
10270
10271         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
10272                 if (phba->nvmet_support) {
10273                         phba->sli4_hba.nvmet_cqset = kcalloc(
10274                                         phba->cfg_nvmet_mrq,
10275                                         sizeof(struct lpfc_queue *),
10276                                         GFP_KERNEL);
10277                         if (!phba->sli4_hba.nvmet_cqset) {
10278                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10279                                         "3121 Fail allocate memory for "
10280                                         "fast-path CQ set array\n");
10281                                 goto out_error;
10282                         }
10283                         phba->sli4_hba.nvmet_mrq_hdr = kcalloc(
10284                                         phba->cfg_nvmet_mrq,
10285                                         sizeof(struct lpfc_queue *),
10286                                         GFP_KERNEL);
10287                         if (!phba->sli4_hba.nvmet_mrq_hdr) {
10288                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10289                                         "3122 Fail allocate memory for "
10290                                         "fast-path RQ set hdr array\n");
10291                                 goto out_error;
10292                         }
10293                         phba->sli4_hba.nvmet_mrq_data = kcalloc(
10294                                         phba->cfg_nvmet_mrq,
10295                                         sizeof(struct lpfc_queue *),
10296                                         GFP_KERNEL);
10297                         if (!phba->sli4_hba.nvmet_mrq_data) {
10298                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10299                                         "3124 Fail allocate memory for "
10300                                         "fast-path RQ set data array\n");
10301                                 goto out_error;
10302                         }
10303                 }
10304         }
10305
10306         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
10307
10308         /* Create HBA Event Queues (EQs) */
10309         for_each_present_cpu(cpu) {
10310                 /* We only want to create 1 EQ per vector, even though
10311                  * multiple CPUs might be using that vector. so only
10312                  * selects the CPUs that are LPFC_CPU_FIRST_IRQ.
10313                  */
10314                 cpup = &phba->sli4_hba.cpu_map[cpu];
10315                 if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
10316                         continue;
10317
10318                 /* Get a ptr to the Hardware Queue associated with this CPU */
10319                 qp = &phba->sli4_hba.hdwq[cpup->hdwq];
10320
10321                 /* Allocate an EQ */
10322                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10323                                               phba->sli4_hba.eq_esize,
10324                                               phba->sli4_hba.eq_ecount, cpu);
10325                 if (!qdesc) {
10326                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10327                                         "0497 Failed allocate EQ (%d)\n",
10328                                         cpup->hdwq);
10329                         goto out_error;
10330                 }
10331                 qdesc->qe_valid = 1;
10332                 qdesc->hdwq = cpup->hdwq;
10333                 qdesc->chann = cpu; /* First CPU this EQ is affinitized to */
10334                 qdesc->last_cpu = qdesc->chann;
10335
10336                 /* Save the allocated EQ in the Hardware Queue */
10337                 qp->hba_eq = qdesc;
10338
10339                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, qdesc->last_cpu);
10340                 list_add(&qdesc->cpu_list, &eqi->list);
10341         }
10342
10343         /* Now we need to populate the other Hardware Queues, that share
10344          * an IRQ vector, with the associated EQ ptr.
10345          */
10346         for_each_present_cpu(cpu) {
10347                 cpup = &phba->sli4_hba.cpu_map[cpu];
10348
10349                 /* Check for EQ already allocated in previous loop */
10350                 if (cpup->flag & LPFC_CPU_FIRST_IRQ)
10351                         continue;
10352
10353                 /* Check for multiple CPUs per hdwq */
10354                 qp = &phba->sli4_hba.hdwq[cpup->hdwq];
10355                 if (qp->hba_eq)
10356                         continue;
10357
10358                 /* We need to share an EQ for this hdwq */
10359                 eqcpu = lpfc_find_cpu_handle(phba, cpup->eq, LPFC_FIND_BY_EQ);
10360                 eqcpup = &phba->sli4_hba.cpu_map[eqcpu];
10361                 qp->hba_eq = phba->sli4_hba.hdwq[eqcpup->hdwq].hba_eq;
10362         }
10363
10364         /* Allocate IO Path SLI4 CQ/WQs */
10365         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10366                 if (lpfc_alloc_io_wq_cq(phba, idx))
10367                         goto out_error;
10368         }
10369
10370         if (phba->nvmet_support) {
10371                 for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
10372                         cpu = lpfc_find_cpu_handle(phba, idx,
10373                                                    LPFC_FIND_BY_HDWQ);
10374                         qdesc = lpfc_sli4_queue_alloc(phba,
10375                                                       LPFC_DEFAULT_PAGE_SIZE,
10376                                                       phba->sli4_hba.cq_esize,
10377                                                       phba->sli4_hba.cq_ecount,
10378                                                       cpu);
10379                         if (!qdesc) {
10380                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10381                                                 "3142 Failed allocate NVME "
10382                                                 "CQ Set (%d)\n", idx);
10383                                 goto out_error;
10384                         }
10385                         qdesc->qe_valid = 1;
10386                         qdesc->hdwq = idx;
10387                         qdesc->chann = cpu;
10388                         phba->sli4_hba.nvmet_cqset[idx] = qdesc;
10389                 }
10390         }
10391
10392         /*
10393          * Create Slow Path Completion Queues (CQs)
10394          */
10395
10396         cpu = lpfc_find_cpu_handle(phba, 0, LPFC_FIND_BY_EQ);
10397         /* Create slow-path Mailbox Command Complete Queue */
10398         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10399                                       phba->sli4_hba.cq_esize,
10400                                       phba->sli4_hba.cq_ecount, cpu);
10401         if (!qdesc) {
10402                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10403                                 "0500 Failed allocate slow-path mailbox CQ\n");
10404                 goto out_error;
10405         }
10406         qdesc->qe_valid = 1;
10407         phba->sli4_hba.mbx_cq = qdesc;
10408
10409         /* Create slow-path ELS Complete Queue */
10410         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10411                                       phba->sli4_hba.cq_esize,
10412                                       phba->sli4_hba.cq_ecount, cpu);
10413         if (!qdesc) {
10414                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10415                                 "0501 Failed allocate slow-path ELS CQ\n");
10416                 goto out_error;
10417         }
10418         qdesc->qe_valid = 1;
10419         qdesc->chann = cpu;
10420         phba->sli4_hba.els_cq = qdesc;
10421
10422
10423         /*
10424          * Create Slow Path Work Queues (WQs)
10425          */
10426
10427         /* Create Mailbox Command Queue */
10428
10429         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10430                                       phba->sli4_hba.mq_esize,
10431                                       phba->sli4_hba.mq_ecount, cpu);
10432         if (!qdesc) {
10433                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10434                                 "0505 Failed allocate slow-path MQ\n");
10435                 goto out_error;
10436         }
10437         qdesc->chann = cpu;
10438         phba->sli4_hba.mbx_wq = qdesc;
10439
10440         /*
10441          * Create ELS Work Queues
10442          */
10443
10444         /* Create slow-path ELS Work Queue */
10445         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10446                                       phba->sli4_hba.wq_esize,
10447                                       phba->sli4_hba.wq_ecount, cpu);
10448         if (!qdesc) {
10449                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10450                                 "0504 Failed allocate slow-path ELS WQ\n");
10451                 goto out_error;
10452         }
10453         qdesc->chann = cpu;
10454         phba->sli4_hba.els_wq = qdesc;
10455         list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
10456
10457         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
10458                 /* Create NVME LS Complete Queue */
10459                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10460                                               phba->sli4_hba.cq_esize,
10461                                               phba->sli4_hba.cq_ecount, cpu);
10462                 if (!qdesc) {
10463                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10464                                         "6079 Failed allocate NVME LS CQ\n");
10465                         goto out_error;
10466                 }
10467                 qdesc->chann = cpu;
10468                 qdesc->qe_valid = 1;
10469                 phba->sli4_hba.nvmels_cq = qdesc;
10470
10471                 /* Create NVME LS Work Queue */
10472                 qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10473                                               phba->sli4_hba.wq_esize,
10474                                               phba->sli4_hba.wq_ecount, cpu);
10475                 if (!qdesc) {
10476                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10477                                         "6080 Failed allocate NVME LS WQ\n");
10478                         goto out_error;
10479                 }
10480                 qdesc->chann = cpu;
10481                 phba->sli4_hba.nvmels_wq = qdesc;
10482                 list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
10483         }
10484
10485         /*
10486          * Create Receive Queue (RQ)
10487          */
10488
10489         /* Create Receive Queue for header */
10490         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10491                                       phba->sli4_hba.rq_esize,
10492                                       phba->sli4_hba.rq_ecount, cpu);
10493         if (!qdesc) {
10494                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10495                                 "0506 Failed allocate receive HRQ\n");
10496                 goto out_error;
10497         }
10498         phba->sli4_hba.hdr_rq = qdesc;
10499
10500         /* Create Receive Queue for data */
10501         qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
10502                                       phba->sli4_hba.rq_esize,
10503                                       phba->sli4_hba.rq_ecount, cpu);
10504         if (!qdesc) {
10505                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10506                                 "0507 Failed allocate receive DRQ\n");
10507                 goto out_error;
10508         }
10509         phba->sli4_hba.dat_rq = qdesc;
10510
10511         if ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) &&
10512             phba->nvmet_support) {
10513                 for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
10514                         cpu = lpfc_find_cpu_handle(phba, idx,
10515                                                    LPFC_FIND_BY_HDWQ);
10516                         /* Create NVMET Receive Queue for header */
10517                         qdesc = lpfc_sli4_queue_alloc(phba,
10518                                                       LPFC_DEFAULT_PAGE_SIZE,
10519                                                       phba->sli4_hba.rq_esize,
10520                                                       LPFC_NVMET_RQE_DEF_COUNT,
10521                                                       cpu);
10522                         if (!qdesc) {
10523                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10524                                                 "3146 Failed allocate "
10525                                                 "receive HRQ\n");
10526                                 goto out_error;
10527                         }
10528                         qdesc->hdwq = idx;
10529                         phba->sli4_hba.nvmet_mrq_hdr[idx] = qdesc;
10530
10531                         /* Only needed for header of RQ pair */
10532                         qdesc->rqbp = kzalloc_node(sizeof(*qdesc->rqbp),
10533                                                    GFP_KERNEL,
10534                                                    cpu_to_node(cpu));
10535                         if (qdesc->rqbp == NULL) {
10536                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10537                                                 "6131 Failed allocate "
10538                                                 "Header RQBP\n");
10539                                 goto out_error;
10540                         }
10541
10542                         /* Put list in known state in case driver load fails. */
10543                         INIT_LIST_HEAD(&qdesc->rqbp->rqb_buffer_list);
10544
10545                         /* Create NVMET Receive Queue for data */
10546                         qdesc = lpfc_sli4_queue_alloc(phba,
10547                                                       LPFC_DEFAULT_PAGE_SIZE,
10548                                                       phba->sli4_hba.rq_esize,
10549                                                       LPFC_NVMET_RQE_DEF_COUNT,
10550                                                       cpu);
10551                         if (!qdesc) {
10552                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10553                                                 "3156 Failed allocate "
10554                                                 "receive DRQ\n");
10555                                 goto out_error;
10556                         }
10557                         qdesc->hdwq = idx;
10558                         phba->sli4_hba.nvmet_mrq_data[idx] = qdesc;
10559                 }
10560         }
10561
10562         /* Clear NVME stats */
10563         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
10564                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10565                         memset(&phba->sli4_hba.hdwq[idx].nvme_cstat, 0,
10566                                sizeof(phba->sli4_hba.hdwq[idx].nvme_cstat));
10567                 }
10568         }
10569
10570         /* Clear SCSI stats */
10571         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
10572                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10573                         memset(&phba->sli4_hba.hdwq[idx].scsi_cstat, 0,
10574                                sizeof(phba->sli4_hba.hdwq[idx].scsi_cstat));
10575                 }
10576         }
10577
10578         return 0;
10579
10580 out_error:
10581         lpfc_sli4_queue_destroy(phba);
10582         return -ENOMEM;
10583 }
10584
10585 static inline void
10586 __lpfc_sli4_release_queue(struct lpfc_queue **qp)
10587 {
10588         if (*qp != NULL) {
10589                 lpfc_sli4_queue_free(*qp);
10590                 *qp = NULL;
10591         }
10592 }
10593
10594 static inline void
10595 lpfc_sli4_release_queues(struct lpfc_queue ***qs, int max)
10596 {
10597         int idx;
10598
10599         if (*qs == NULL)
10600                 return;
10601
10602         for (idx = 0; idx < max; idx++)
10603                 __lpfc_sli4_release_queue(&(*qs)[idx]);
10604
10605         kfree(*qs);
10606         *qs = NULL;
10607 }
10608
10609 static inline void
10610 lpfc_sli4_release_hdwq(struct lpfc_hba *phba)
10611 {
10612         struct lpfc_sli4_hdw_queue *hdwq;
10613         struct lpfc_queue *eq;
10614         uint32_t idx;
10615
10616         hdwq = phba->sli4_hba.hdwq;
10617
10618         /* Loop thru all Hardware Queues */
10619         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
10620                 /* Free the CQ/WQ corresponding to the Hardware Queue */
10621                 lpfc_sli4_queue_free(hdwq[idx].io_cq);
10622                 lpfc_sli4_queue_free(hdwq[idx].io_wq);
10623                 hdwq[idx].hba_eq = NULL;
10624                 hdwq[idx].io_cq = NULL;
10625                 hdwq[idx].io_wq = NULL;
10626                 if (phba->cfg_xpsgl && !phba->nvmet_support)
10627                         lpfc_free_sgl_per_hdwq(phba, &hdwq[idx]);
10628                 lpfc_free_cmd_rsp_buf_per_hdwq(phba, &hdwq[idx]);
10629         }
10630         /* Loop thru all IRQ vectors */
10631         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
10632                 /* Free the EQ corresponding to the IRQ vector */
10633                 eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
10634                 lpfc_sli4_queue_free(eq);
10635                 phba->sli4_hba.hba_eq_hdl[idx].eq = NULL;
10636         }
10637 }
10638
10639 /**
10640  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
10641  * @phba: pointer to lpfc hba data structure.
10642  *
10643  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
10644  * operation.
10645  *
10646  * Return codes
10647  *      0 - successful
10648  *      -ENOMEM - No available memory
10649  *      -EIO - The mailbox failed to complete successfully.
10650  **/
10651 void
10652 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
10653 {
10654         /*
10655          * Set FREE_INIT before beginning to free the queues.
10656          * Wait until the users of queues to acknowledge to
10657          * release queues by clearing FREE_WAIT.
10658          */
10659         spin_lock_irq(&phba->hbalock);
10660         phba->sli.sli_flag |= LPFC_QUEUE_FREE_INIT;
10661         while (phba->sli.sli_flag & LPFC_QUEUE_FREE_WAIT) {
10662                 spin_unlock_irq(&phba->hbalock);
10663                 msleep(20);
10664                 spin_lock_irq(&phba->hbalock);
10665         }
10666         spin_unlock_irq(&phba->hbalock);
10667
10668         lpfc_sli4_cleanup_poll_list(phba);
10669
10670         /* Release HBA eqs */
10671         if (phba->sli4_hba.hdwq)
10672                 lpfc_sli4_release_hdwq(phba);
10673
10674         if (phba->nvmet_support) {
10675                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_cqset,
10676                                          phba->cfg_nvmet_mrq);
10677
10678                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_hdr,
10679                                          phba->cfg_nvmet_mrq);
10680                 lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_data,
10681                                          phba->cfg_nvmet_mrq);
10682         }
10683
10684         /* Release mailbox command work queue */
10685         __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_wq);
10686
10687         /* Release ELS work queue */
10688         __lpfc_sli4_release_queue(&phba->sli4_hba.els_wq);
10689
10690         /* Release ELS work queue */
10691         __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_wq);
10692
10693         /* Release unsolicited receive queue */
10694         __lpfc_sli4_release_queue(&phba->sli4_hba.hdr_rq);
10695         __lpfc_sli4_release_queue(&phba->sli4_hba.dat_rq);
10696
10697         /* Release ELS complete queue */
10698         __lpfc_sli4_release_queue(&phba->sli4_hba.els_cq);
10699
10700         /* Release NVME LS complete queue */
10701         __lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_cq);
10702
10703         /* Release mailbox command complete queue */
10704         __lpfc_sli4_release_queue(&phba->sli4_hba.mbx_cq);
10705
10706         /* Everything on this list has been freed */
10707         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
10708
10709         /* Done with freeing the queues */
10710         spin_lock_irq(&phba->hbalock);
10711         phba->sli.sli_flag &= ~LPFC_QUEUE_FREE_INIT;
10712         spin_unlock_irq(&phba->hbalock);
10713 }
10714
10715 int
10716 lpfc_free_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *rq)
10717 {
10718         struct lpfc_rqb *rqbp;
10719         struct lpfc_dmabuf *h_buf;
10720         struct rqb_dmabuf *rqb_buffer;
10721
10722         rqbp = rq->rqbp;
10723         while (!list_empty(&rqbp->rqb_buffer_list)) {
10724                 list_remove_head(&rqbp->rqb_buffer_list, h_buf,
10725                                  struct lpfc_dmabuf, list);
10726
10727                 rqb_buffer = container_of(h_buf, struct rqb_dmabuf, hbuf);
10728                 (rqbp->rqb_free_buffer)(phba, rqb_buffer);
10729                 rqbp->buffer_count--;
10730         }
10731         return 1;
10732 }
10733
10734 static int
10735 lpfc_create_wq_cq(struct lpfc_hba *phba, struct lpfc_queue *eq,
10736         struct lpfc_queue *cq, struct lpfc_queue *wq, uint16_t *cq_map,
10737         int qidx, uint32_t qtype)
10738 {
10739         struct lpfc_sli_ring *pring;
10740         int rc;
10741
10742         if (!eq || !cq || !wq) {
10743                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10744                         "6085 Fast-path %s (%d) not allocated\n",
10745                         ((eq) ? ((cq) ? "WQ" : "CQ") : "EQ"), qidx);
10746                 return -ENOMEM;
10747         }
10748
10749         /* create the Cq first */
10750         rc = lpfc_cq_create(phba, cq, eq,
10751                         (qtype == LPFC_MBOX) ? LPFC_MCQ : LPFC_WCQ, qtype);
10752         if (rc) {
10753                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10754                                 "6086 Failed setup of CQ (%d), rc = 0x%x\n",
10755                                 qidx, (uint32_t)rc);
10756                 return rc;
10757         }
10758
10759         if (qtype != LPFC_MBOX) {
10760                 /* Setup cq_map for fast lookup */
10761                 if (cq_map)
10762                         *cq_map = cq->queue_id;
10763
10764                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10765                         "6087 CQ setup: cq[%d]-id=%d, parent eq[%d]-id=%d\n",
10766                         qidx, cq->queue_id, qidx, eq->queue_id);
10767
10768                 /* create the wq */
10769                 rc = lpfc_wq_create(phba, wq, cq, qtype);
10770                 if (rc) {
10771                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10772                                 "4618 Fail setup fastpath WQ (%d), rc = 0x%x\n",
10773                                 qidx, (uint32_t)rc);
10774                         /* no need to tear down cq - caller will do so */
10775                         return rc;
10776                 }
10777
10778                 /* Bind this CQ/WQ to the NVME ring */
10779                 pring = wq->pring;
10780                 pring->sli.sli4.wqp = (void *)wq;
10781                 cq->pring = pring;
10782
10783                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10784                         "2593 WQ setup: wq[%d]-id=%d assoc=%d, cq[%d]-id=%d\n",
10785                         qidx, wq->queue_id, wq->assoc_qid, qidx, cq->queue_id);
10786         } else {
10787                 rc = lpfc_mq_create(phba, wq, cq, LPFC_MBOX);
10788                 if (rc) {
10789                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10790                                         "0539 Failed setup of slow-path MQ: "
10791                                         "rc = 0x%x\n", rc);
10792                         /* no need to tear down cq - caller will do so */
10793                         return rc;
10794                 }
10795
10796                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10797                         "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
10798                         phba->sli4_hba.mbx_wq->queue_id,
10799                         phba->sli4_hba.mbx_cq->queue_id);
10800         }
10801
10802         return 0;
10803 }
10804
10805 /**
10806  * lpfc_setup_cq_lookup - Setup the CQ lookup table
10807  * @phba: pointer to lpfc hba data structure.
10808  *
10809  * This routine will populate the cq_lookup table by all
10810  * available CQ queue_id's.
10811  **/
10812 static void
10813 lpfc_setup_cq_lookup(struct lpfc_hba *phba)
10814 {
10815         struct lpfc_queue *eq, *childq;
10816         int qidx;
10817
10818         memset(phba->sli4_hba.cq_lookup, 0,
10819                (sizeof(struct lpfc_queue *) * (phba->sli4_hba.cq_max + 1)));
10820         /* Loop thru all IRQ vectors */
10821         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
10822                 /* Get the EQ corresponding to the IRQ vector */
10823                 eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
10824                 if (!eq)
10825                         continue;
10826                 /* Loop through all CQs associated with that EQ */
10827                 list_for_each_entry(childq, &eq->child_list, list) {
10828                         if (childq->queue_id > phba->sli4_hba.cq_max)
10829                                 continue;
10830                         if (childq->subtype == LPFC_IO)
10831                                 phba->sli4_hba.cq_lookup[childq->queue_id] =
10832                                         childq;
10833                 }
10834         }
10835 }
10836
10837 /**
10838  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
10839  * @phba: pointer to lpfc hba data structure.
10840  *
10841  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
10842  * operation.
10843  *
10844  * Return codes
10845  *      0 - successful
10846  *      -ENOMEM - No available memory
10847  *      -EIO - The mailbox failed to complete successfully.
10848  **/
10849 int
10850 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
10851 {
10852         uint32_t shdr_status, shdr_add_status;
10853         union lpfc_sli4_cfg_shdr *shdr;
10854         struct lpfc_vector_map_info *cpup;
10855         struct lpfc_sli4_hdw_queue *qp;
10856         LPFC_MBOXQ_t *mboxq;
10857         int qidx, cpu;
10858         uint32_t length, usdelay;
10859         int rc = -ENOMEM;
10860
10861         /* Check for dual-ULP support */
10862         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10863         if (!mboxq) {
10864                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10865                                 "3249 Unable to allocate memory for "
10866                                 "QUERY_FW_CFG mailbox command\n");
10867                 return -ENOMEM;
10868         }
10869         length = (sizeof(struct lpfc_mbx_query_fw_config) -
10870                   sizeof(struct lpfc_sli4_cfg_mhdr));
10871         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
10872                          LPFC_MBOX_OPCODE_QUERY_FW_CFG,
10873                          length, LPFC_SLI4_MBX_EMBED);
10874
10875         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
10876
10877         shdr = (union lpfc_sli4_cfg_shdr *)
10878                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
10879         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10880         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10881         if (shdr_status || shdr_add_status || rc) {
10882                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10883                                 "3250 QUERY_FW_CFG mailbox failed with status "
10884                                 "x%x add_status x%x, mbx status x%x\n",
10885                                 shdr_status, shdr_add_status, rc);
10886                 mempool_free(mboxq, phba->mbox_mem_pool);
10887                 rc = -ENXIO;
10888                 goto out_error;
10889         }
10890
10891         phba->sli4_hba.fw_func_mode =
10892                         mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode;
10893         phba->sli4_hba.ulp0_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp0_mode;
10894         phba->sli4_hba.ulp1_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp1_mode;
10895         phba->sli4_hba.physical_port =
10896                         mboxq->u.mqe.un.query_fw_cfg.rsp.physical_port;
10897         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10898                         "3251 QUERY_FW_CFG: func_mode:x%x, ulp0_mode:x%x, "
10899                         "ulp1_mode:x%x\n", phba->sli4_hba.fw_func_mode,
10900                         phba->sli4_hba.ulp0_mode, phba->sli4_hba.ulp1_mode);
10901
10902         mempool_free(mboxq, phba->mbox_mem_pool);
10903
10904         /*
10905          * Set up HBA Event Queues (EQs)
10906          */
10907         qp = phba->sli4_hba.hdwq;
10908
10909         /* Set up HBA event queue */
10910         if (!qp) {
10911                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10912                                 "3147 Fast-path EQs not allocated\n");
10913                 rc = -ENOMEM;
10914                 goto out_error;
10915         }
10916
10917         /* Loop thru all IRQ vectors */
10918         for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
10919                 /* Create HBA Event Queues (EQs) in order */
10920                 for_each_present_cpu(cpu) {
10921                         cpup = &phba->sli4_hba.cpu_map[cpu];
10922
10923                         /* Look for the CPU thats using that vector with
10924                          * LPFC_CPU_FIRST_IRQ set.
10925                          */
10926                         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
10927                                 continue;
10928                         if (qidx != cpup->eq)
10929                                 continue;
10930
10931                         /* Create an EQ for that vector */
10932                         rc = lpfc_eq_create(phba, qp[cpup->hdwq].hba_eq,
10933                                             phba->cfg_fcp_imax);
10934                         if (rc) {
10935                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10936                                                 "0523 Failed setup of fast-path"
10937                                                 " EQ (%d), rc = 0x%x\n",
10938                                                 cpup->eq, (uint32_t)rc);
10939                                 goto out_destroy;
10940                         }
10941
10942                         /* Save the EQ for that vector in the hba_eq_hdl */
10943                         phba->sli4_hba.hba_eq_hdl[cpup->eq].eq =
10944                                 qp[cpup->hdwq].hba_eq;
10945
10946                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10947                                         "2584 HBA EQ setup: queue[%d]-id=%d\n",
10948                                         cpup->eq,
10949                                         qp[cpup->hdwq].hba_eq->queue_id);
10950                 }
10951         }
10952
10953         /* Loop thru all Hardware Queues */
10954         for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
10955                 cpu = lpfc_find_cpu_handle(phba, qidx, LPFC_FIND_BY_HDWQ);
10956                 cpup = &phba->sli4_hba.cpu_map[cpu];
10957
10958                 /* Create the CQ/WQ corresponding to the Hardware Queue */
10959                 rc = lpfc_create_wq_cq(phba,
10960                                        phba->sli4_hba.hdwq[cpup->hdwq].hba_eq,
10961                                        qp[qidx].io_cq,
10962                                        qp[qidx].io_wq,
10963                                        &phba->sli4_hba.hdwq[qidx].io_cq_map,
10964                                        qidx,
10965                                        LPFC_IO);
10966                 if (rc) {
10967                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10968                                         "0535 Failed to setup fastpath "
10969                                         "IO WQ/CQ (%d), rc = 0x%x\n",
10970                                         qidx, (uint32_t)rc);
10971                         goto out_destroy;
10972                 }
10973         }
10974
10975         /*
10976          * Set up Slow Path Complete Queues (CQs)
10977          */
10978
10979         /* Set up slow-path MBOX CQ/MQ */
10980
10981         if (!phba->sli4_hba.mbx_cq || !phba->sli4_hba.mbx_wq) {
10982                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10983                                 "0528 %s not allocated\n",
10984                                 phba->sli4_hba.mbx_cq ?
10985                                 "Mailbox WQ" : "Mailbox CQ");
10986                 rc = -ENOMEM;
10987                 goto out_destroy;
10988         }
10989
10990         rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
10991                                phba->sli4_hba.mbx_cq,
10992                                phba->sli4_hba.mbx_wq,
10993                                NULL, 0, LPFC_MBOX);
10994         if (rc) {
10995                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10996                         "0529 Failed setup of mailbox WQ/CQ: rc = 0x%x\n",
10997                         (uint32_t)rc);
10998                 goto out_destroy;
10999         }
11000         if (phba->nvmet_support) {
11001                 if (!phba->sli4_hba.nvmet_cqset) {
11002                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11003                                         "3165 Fast-path NVME CQ Set "
11004                                         "array not allocated\n");
11005                         rc = -ENOMEM;
11006                         goto out_destroy;
11007                 }
11008                 if (phba->cfg_nvmet_mrq > 1) {
11009                         rc = lpfc_cq_create_set(phba,
11010                                         phba->sli4_hba.nvmet_cqset,
11011                                         qp,
11012                                         LPFC_WCQ, LPFC_NVMET);
11013                         if (rc) {
11014                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11015                                                 "3164 Failed setup of NVME CQ "
11016                                                 "Set, rc = 0x%x\n",
11017                                                 (uint32_t)rc);
11018                                 goto out_destroy;
11019                         }
11020                 } else {
11021                         /* Set up NVMET Receive Complete Queue */
11022                         rc = lpfc_cq_create(phba, phba->sli4_hba.nvmet_cqset[0],
11023                                             qp[0].hba_eq,
11024                                             LPFC_WCQ, LPFC_NVMET);
11025                         if (rc) {
11026                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11027                                                 "6089 Failed setup NVMET CQ: "
11028                                                 "rc = 0x%x\n", (uint32_t)rc);
11029                                 goto out_destroy;
11030                         }
11031                         phba->sli4_hba.nvmet_cqset[0]->chann = 0;
11032
11033                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11034                                         "6090 NVMET CQ setup: cq-id=%d, "
11035                                         "parent eq-id=%d\n",
11036                                         phba->sli4_hba.nvmet_cqset[0]->queue_id,
11037                                         qp[0].hba_eq->queue_id);
11038                 }
11039         }
11040
11041         /* Set up slow-path ELS WQ/CQ */
11042         if (!phba->sli4_hba.els_cq || !phba->sli4_hba.els_wq) {
11043                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11044                                 "0530 ELS %s not allocated\n",
11045                                 phba->sli4_hba.els_cq ? "WQ" : "CQ");
11046                 rc = -ENOMEM;
11047                 goto out_destroy;
11048         }
11049         rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
11050                                phba->sli4_hba.els_cq,
11051                                phba->sli4_hba.els_wq,
11052                                NULL, 0, LPFC_ELS);
11053         if (rc) {
11054                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11055                                 "0525 Failed setup of ELS WQ/CQ: rc = 0x%x\n",
11056                                 (uint32_t)rc);
11057                 goto out_destroy;
11058         }
11059         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11060                         "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
11061                         phba->sli4_hba.els_wq->queue_id,
11062                         phba->sli4_hba.els_cq->queue_id);
11063
11064         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11065                 /* Set up NVME LS Complete Queue */
11066                 if (!phba->sli4_hba.nvmels_cq || !phba->sli4_hba.nvmels_wq) {
11067                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11068                                         "6091 LS %s not allocated\n",
11069                                         phba->sli4_hba.nvmels_cq ? "WQ" : "CQ");
11070                         rc = -ENOMEM;
11071                         goto out_destroy;
11072                 }
11073                 rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
11074                                        phba->sli4_hba.nvmels_cq,
11075                                        phba->sli4_hba.nvmels_wq,
11076                                        NULL, 0, LPFC_NVME_LS);
11077                 if (rc) {
11078                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11079                                         "0526 Failed setup of NVVME LS WQ/CQ: "
11080                                         "rc = 0x%x\n", (uint32_t)rc);
11081                         goto out_destroy;
11082                 }
11083
11084                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11085                                 "6096 ELS WQ setup: wq-id=%d, "
11086                                 "parent cq-id=%d\n",
11087                                 phba->sli4_hba.nvmels_wq->queue_id,
11088                                 phba->sli4_hba.nvmels_cq->queue_id);
11089         }
11090
11091         /*
11092          * Create NVMET Receive Queue (RQ)
11093          */
11094         if (phba->nvmet_support) {
11095                 if ((!phba->sli4_hba.nvmet_cqset) ||
11096                     (!phba->sli4_hba.nvmet_mrq_hdr) ||
11097                     (!phba->sli4_hba.nvmet_mrq_data)) {
11098                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11099                                         "6130 MRQ CQ Queues not "
11100                                         "allocated\n");
11101                         rc = -ENOMEM;
11102                         goto out_destroy;
11103                 }
11104                 if (phba->cfg_nvmet_mrq > 1) {
11105                         rc = lpfc_mrq_create(phba,
11106                                              phba->sli4_hba.nvmet_mrq_hdr,
11107                                              phba->sli4_hba.nvmet_mrq_data,
11108                                              phba->sli4_hba.nvmet_cqset,
11109                                              LPFC_NVMET);
11110                         if (rc) {
11111                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11112                                                 "6098 Failed setup of NVMET "
11113                                                 "MRQ: rc = 0x%x\n",
11114                                                 (uint32_t)rc);
11115                                 goto out_destroy;
11116                         }
11117
11118                 } else {
11119                         rc = lpfc_rq_create(phba,
11120                                             phba->sli4_hba.nvmet_mrq_hdr[0],
11121                                             phba->sli4_hba.nvmet_mrq_data[0],
11122                                             phba->sli4_hba.nvmet_cqset[0],
11123                                             LPFC_NVMET);
11124                         if (rc) {
11125                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11126                                                 "6057 Failed setup of NVMET "
11127                                                 "Receive Queue: rc = 0x%x\n",
11128                                                 (uint32_t)rc);
11129                                 goto out_destroy;
11130                         }
11131
11132                         lpfc_printf_log(
11133                                 phba, KERN_INFO, LOG_INIT,
11134                                 "6099 NVMET RQ setup: hdr-rq-id=%d, "
11135                                 "dat-rq-id=%d parent cq-id=%d\n",
11136                                 phba->sli4_hba.nvmet_mrq_hdr[0]->queue_id,
11137                                 phba->sli4_hba.nvmet_mrq_data[0]->queue_id,
11138                                 phba->sli4_hba.nvmet_cqset[0]->queue_id);
11139
11140                 }
11141         }
11142
11143         if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
11144                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11145                                 "0540 Receive Queue not allocated\n");
11146                 rc = -ENOMEM;
11147                 goto out_destroy;
11148         }
11149
11150         rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
11151                             phba->sli4_hba.els_cq, LPFC_USOL);
11152         if (rc) {
11153                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11154                                 "0541 Failed setup of Receive Queue: "
11155                                 "rc = 0x%x\n", (uint32_t)rc);
11156                 goto out_destroy;
11157         }
11158
11159         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11160                         "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
11161                         "parent cq-id=%d\n",
11162                         phba->sli4_hba.hdr_rq->queue_id,
11163                         phba->sli4_hba.dat_rq->queue_id,
11164                         phba->sli4_hba.els_cq->queue_id);
11165
11166         if (phba->cfg_fcp_imax)
11167                 usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;
11168         else
11169                 usdelay = 0;
11170
11171         for (qidx = 0; qidx < phba->cfg_irq_chann;
11172              qidx += LPFC_MAX_EQ_DELAY_EQID_CNT)
11173                 lpfc_modify_hba_eq_delay(phba, qidx, LPFC_MAX_EQ_DELAY_EQID_CNT,
11174                                          usdelay);
11175
11176         if (phba->sli4_hba.cq_max) {
11177                 kfree(phba->sli4_hba.cq_lookup);
11178                 phba->sli4_hba.cq_lookup = kcalloc((phba->sli4_hba.cq_max + 1),
11179                         sizeof(struct lpfc_queue *), GFP_KERNEL);
11180                 if (!phba->sli4_hba.cq_lookup) {
11181                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11182                                         "0549 Failed setup of CQ Lookup table: "
11183                                         "size 0x%x\n", phba->sli4_hba.cq_max);
11184                         rc = -ENOMEM;
11185                         goto out_destroy;
11186                 }
11187                 lpfc_setup_cq_lookup(phba);
11188         }
11189         return 0;
11190
11191 out_destroy:
11192         lpfc_sli4_queue_unset(phba);
11193 out_error:
11194         return rc;
11195 }
11196
11197 /**
11198  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
11199  * @phba: pointer to lpfc hba data structure.
11200  *
11201  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
11202  * operation.
11203  *
11204  * Return codes
11205  *      0 - successful
11206  *      -ENOMEM - No available memory
11207  *      -EIO - The mailbox failed to complete successfully.
11208  **/
11209 void
11210 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
11211 {
11212         struct lpfc_sli4_hdw_queue *qp;
11213         struct lpfc_queue *eq;
11214         int qidx;
11215
11216         /* Unset mailbox command work queue */
11217         if (phba->sli4_hba.mbx_wq)
11218                 lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
11219
11220         /* Unset NVME LS work queue */
11221         if (phba->sli4_hba.nvmels_wq)
11222                 lpfc_wq_destroy(phba, phba->sli4_hba.nvmels_wq);
11223
11224         /* Unset ELS work queue */
11225         if (phba->sli4_hba.els_wq)
11226                 lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
11227
11228         /* Unset unsolicited receive queue */
11229         if (phba->sli4_hba.hdr_rq)
11230                 lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq,
11231                                 phba->sli4_hba.dat_rq);
11232
11233         /* Unset mailbox command complete queue */
11234         if (phba->sli4_hba.mbx_cq)
11235                 lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
11236
11237         /* Unset ELS complete queue */
11238         if (phba->sli4_hba.els_cq)
11239                 lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
11240
11241         /* Unset NVME LS complete queue */
11242         if (phba->sli4_hba.nvmels_cq)
11243                 lpfc_cq_destroy(phba, phba->sli4_hba.nvmels_cq);
11244
11245         if (phba->nvmet_support) {
11246                 /* Unset NVMET MRQ queue */
11247                 if (phba->sli4_hba.nvmet_mrq_hdr) {
11248                         for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
11249                                 lpfc_rq_destroy(
11250                                         phba,
11251                                         phba->sli4_hba.nvmet_mrq_hdr[qidx],
11252                                         phba->sli4_hba.nvmet_mrq_data[qidx]);
11253                 }
11254
11255                 /* Unset NVMET CQ Set complete queue */
11256                 if (phba->sli4_hba.nvmet_cqset) {
11257                         for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
11258                                 lpfc_cq_destroy(
11259                                         phba, phba->sli4_hba.nvmet_cqset[qidx]);
11260                 }
11261         }
11262
11263         /* Unset fast-path SLI4 queues */
11264         if (phba->sli4_hba.hdwq) {
11265                 /* Loop thru all Hardware Queues */
11266                 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
11267                         /* Destroy the CQ/WQ corresponding to Hardware Queue */
11268                         qp = &phba->sli4_hba.hdwq[qidx];
11269                         lpfc_wq_destroy(phba, qp->io_wq);
11270                         lpfc_cq_destroy(phba, qp->io_cq);
11271                 }
11272                 /* Loop thru all IRQ vectors */
11273                 for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
11274                         /* Destroy the EQ corresponding to the IRQ vector */
11275                         eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
11276                         lpfc_eq_destroy(phba, eq);
11277                 }
11278         }
11279
11280         kfree(phba->sli4_hba.cq_lookup);
11281         phba->sli4_hba.cq_lookup = NULL;
11282         phba->sli4_hba.cq_max = 0;
11283 }
11284
11285 /**
11286  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
11287  * @phba: pointer to lpfc hba data structure.
11288  *
11289  * This routine is invoked to allocate and set up a pool of completion queue
11290  * events. The body of the completion queue event is a completion queue entry
11291  * CQE. For now, this pool is used for the interrupt service routine to queue
11292  * the following HBA completion queue events for the worker thread to process:
11293  *   - Mailbox asynchronous events
11294  *   - Receive queue completion unsolicited events
11295  * Later, this can be used for all the slow-path events.
11296  *
11297  * Return codes
11298  *      0 - successful
11299  *      -ENOMEM - No available memory
11300  **/
11301 static int
11302 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
11303 {
11304         struct lpfc_cq_event *cq_event;
11305         int i;
11306
11307         for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
11308                 cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
11309                 if (!cq_event)
11310                         goto out_pool_create_fail;
11311                 list_add_tail(&cq_event->list,
11312                               &phba->sli4_hba.sp_cqe_event_pool);
11313         }
11314         return 0;
11315
11316 out_pool_create_fail:
11317         lpfc_sli4_cq_event_pool_destroy(phba);
11318         return -ENOMEM;
11319 }
11320
11321 /**
11322  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
11323  * @phba: pointer to lpfc hba data structure.
11324  *
11325  * This routine is invoked to free the pool of completion queue events at
11326  * driver unload time. Note that, it is the responsibility of the driver
11327  * cleanup routine to free all the outstanding completion-queue events
11328  * allocated from this pool back into the pool before invoking this routine
11329  * to destroy the pool.
11330  **/
11331 static void
11332 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
11333 {
11334         struct lpfc_cq_event *cq_event, *next_cq_event;
11335
11336         list_for_each_entry_safe(cq_event, next_cq_event,
11337                                  &phba->sli4_hba.sp_cqe_event_pool, list) {
11338                 list_del(&cq_event->list);
11339                 kfree(cq_event);
11340         }
11341 }
11342
11343 /**
11344  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
11345  * @phba: pointer to lpfc hba data structure.
11346  *
11347  * This routine is the lock free version of the API invoked to allocate a
11348  * completion-queue event from the free pool.
11349  *
11350  * Return: Pointer to the newly allocated completion-queue event if successful
11351  *         NULL otherwise.
11352  **/
11353 struct lpfc_cq_event *
11354 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
11355 {
11356         struct lpfc_cq_event *cq_event = NULL;
11357
11358         list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
11359                          struct lpfc_cq_event, list);
11360         return cq_event;
11361 }
11362
11363 /**
11364  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
11365  * @phba: pointer to lpfc hba data structure.
11366  *
11367  * This routine is the lock version of the API invoked to allocate a
11368  * completion-queue event from the free pool.
11369  *
11370  * Return: Pointer to the newly allocated completion-queue event if successful
11371  *         NULL otherwise.
11372  **/
11373 struct lpfc_cq_event *
11374 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
11375 {
11376         struct lpfc_cq_event *cq_event;
11377         unsigned long iflags;
11378
11379         spin_lock_irqsave(&phba->hbalock, iflags);
11380         cq_event = __lpfc_sli4_cq_event_alloc(phba);
11381         spin_unlock_irqrestore(&phba->hbalock, iflags);
11382         return cq_event;
11383 }
11384
11385 /**
11386  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
11387  * @phba: pointer to lpfc hba data structure.
11388  * @cq_event: pointer to the completion queue event to be freed.
11389  *
11390  * This routine is the lock free version of the API invoked to release a
11391  * completion-queue event back into the free pool.
11392  **/
11393 void
11394 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
11395                              struct lpfc_cq_event *cq_event)
11396 {
11397         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
11398 }
11399
11400 /**
11401  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
11402  * @phba: pointer to lpfc hba data structure.
11403  * @cq_event: pointer to the completion queue event to be freed.
11404  *
11405  * This routine is the lock version of the API invoked to release a
11406  * completion-queue event back into the free pool.
11407  **/
11408 void
11409 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
11410                            struct lpfc_cq_event *cq_event)
11411 {
11412         unsigned long iflags;
11413         spin_lock_irqsave(&phba->hbalock, iflags);
11414         __lpfc_sli4_cq_event_release(phba, cq_event);
11415         spin_unlock_irqrestore(&phba->hbalock, iflags);
11416 }
11417
11418 /**
11419  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
11420  * @phba: pointer to lpfc hba data structure.
11421  *
11422  * This routine is to free all the pending completion-queue events to the
11423  * back into the free pool for device reset.
11424  **/
11425 static void
11426 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
11427 {
11428         LIST_HEAD(cq_event_list);
11429         struct lpfc_cq_event *cq_event;
11430         unsigned long iflags;
11431
11432         /* Retrieve all the pending WCQEs from pending WCQE lists */
11433
11434         /* Pending ELS XRI abort events */
11435         spin_lock_irqsave(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
11436         list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
11437                          &cq_event_list);
11438         spin_unlock_irqrestore(&phba->sli4_hba.els_xri_abrt_list_lock, iflags);
11439
11440         /* Pending asynnc events */
11441         spin_lock_irqsave(&phba->sli4_hba.asynce_list_lock, iflags);
11442         list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
11443                          &cq_event_list);
11444         spin_unlock_irqrestore(&phba->sli4_hba.asynce_list_lock, iflags);
11445
11446         while (!list_empty(&cq_event_list)) {
11447                 list_remove_head(&cq_event_list, cq_event,
11448                                  struct lpfc_cq_event, list);
11449                 lpfc_sli4_cq_event_release(phba, cq_event);
11450         }
11451 }
11452
11453 /**
11454  * lpfc_pci_function_reset - Reset pci function.
11455  * @phba: pointer to lpfc hba data structure.
11456  *
11457  * This routine is invoked to request a PCI function reset. It will destroys
11458  * all resources assigned to the PCI function which originates this request.
11459  *
11460  * Return codes
11461  *      0 - successful
11462  *      -ENOMEM - No available memory
11463  *      -EIO - The mailbox failed to complete successfully.
11464  **/
11465 int
11466 lpfc_pci_function_reset(struct lpfc_hba *phba)
11467 {
11468         LPFC_MBOXQ_t *mboxq;
11469         uint32_t rc = 0, if_type;
11470         uint32_t shdr_status, shdr_add_status;
11471         uint32_t rdy_chk;
11472         uint32_t port_reset = 0;
11473         union lpfc_sli4_cfg_shdr *shdr;
11474         struct lpfc_register reg_data;
11475         uint16_t devid;
11476
11477         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
11478         switch (if_type) {
11479         case LPFC_SLI_INTF_IF_TYPE_0:
11480                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
11481                                                        GFP_KERNEL);
11482                 if (!mboxq) {
11483                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11484                                         "0494 Unable to allocate memory for "
11485                                         "issuing SLI_FUNCTION_RESET mailbox "
11486                                         "command\n");
11487                         return -ENOMEM;
11488                 }
11489
11490                 /* Setup PCI function reset mailbox-ioctl command */
11491                 lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
11492                                  LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
11493                                  LPFC_SLI4_MBX_EMBED);
11494                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
11495                 shdr = (union lpfc_sli4_cfg_shdr *)
11496                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
11497                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
11498                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
11499                                          &shdr->response);
11500                 mempool_free(mboxq, phba->mbox_mem_pool);
11501                 if (shdr_status || shdr_add_status || rc) {
11502                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11503                                         "0495 SLI_FUNCTION_RESET mailbox "
11504                                         "failed with status x%x add_status x%x,"
11505                                         " mbx status x%x\n",
11506                                         shdr_status, shdr_add_status, rc);
11507                         rc = -ENXIO;
11508                 }
11509                 break;
11510         case LPFC_SLI_INTF_IF_TYPE_2:
11511         case LPFC_SLI_INTF_IF_TYPE_6:
11512 wait:
11513                 /*
11514                  * Poll the Port Status Register and wait for RDY for
11515                  * up to 30 seconds. If the port doesn't respond, treat
11516                  * it as an error.
11517                  */
11518                 for (rdy_chk = 0; rdy_chk < 1500; rdy_chk++) {
11519                         if (lpfc_readl(phba->sli4_hba.u.if_type2.
11520                                 STATUSregaddr, &reg_data.word0)) {
11521                                 rc = -ENODEV;
11522                                 goto out;
11523                         }
11524                         if (bf_get(lpfc_sliport_status_rdy, &reg_data))
11525                                 break;
11526                         msleep(20);
11527                 }
11528
11529                 if (!bf_get(lpfc_sliport_status_rdy, &reg_data)) {
11530                         phba->work_status[0] = readl(
11531                                 phba->sli4_hba.u.if_type2.ERR1regaddr);
11532                         phba->work_status[1] = readl(
11533                                 phba->sli4_hba.u.if_type2.ERR2regaddr);
11534                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11535                                         "2890 Port not ready, port status reg "
11536                                         "0x%x error 1=0x%x, error 2=0x%x\n",
11537                                         reg_data.word0,
11538                                         phba->work_status[0],
11539                                         phba->work_status[1]);
11540                         rc = -ENODEV;
11541                         goto out;
11542                 }
11543
11544                 if (!port_reset) {
11545                         /*
11546                          * Reset the port now
11547                          */
11548                         reg_data.word0 = 0;
11549                         bf_set(lpfc_sliport_ctrl_end, &reg_data,
11550                                LPFC_SLIPORT_LITTLE_ENDIAN);
11551                         bf_set(lpfc_sliport_ctrl_ip, &reg_data,
11552                                LPFC_SLIPORT_INIT_PORT);
11553                         writel(reg_data.word0, phba->sli4_hba.u.if_type2.
11554                                CTRLregaddr);
11555                         /* flush */
11556                         pci_read_config_word(phba->pcidev,
11557                                              PCI_DEVICE_ID, &devid);
11558
11559                         port_reset = 1;
11560                         msleep(20);
11561                         goto wait;
11562                 } else if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
11563                         rc = -ENODEV;
11564                         goto out;
11565                 }
11566                 break;
11567
11568         case LPFC_SLI_INTF_IF_TYPE_1:
11569         default:
11570                 break;
11571         }
11572
11573 out:
11574         /* Catch the not-ready port failure after a port reset. */
11575         if (rc) {
11576                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11577                                 "3317 HBA not functional: IP Reset Failed "
11578                                 "try: echo fw_reset > board_mode\n");
11579                 rc = -ENODEV;
11580         }
11581
11582         return rc;
11583 }
11584
11585 /**
11586  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
11587  * @phba: pointer to lpfc hba data structure.
11588  *
11589  * This routine is invoked to set up the PCI device memory space for device
11590  * with SLI-4 interface spec.
11591  *
11592  * Return codes
11593  *      0 - successful
11594  *      other values - error
11595  **/
11596 static int
11597 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
11598 {
11599         struct pci_dev *pdev = phba->pcidev;
11600         unsigned long bar0map_len, bar1map_len, bar2map_len;
11601         int error;
11602         uint32_t if_type;
11603
11604         if (!pdev)
11605                 return -ENODEV;
11606
11607         /* Set the device DMA mask size */
11608         error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
11609         if (error)
11610                 error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
11611         if (error)
11612                 return error;
11613
11614         /*
11615          * The BARs and register set definitions and offset locations are
11616          * dependent on the if_type.
11617          */
11618         if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
11619                                   &phba->sli4_hba.sli_intf.word0)) {
11620                 return -ENODEV;
11621         }
11622
11623         /* There is no SLI3 failback for SLI4 devices. */
11624         if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
11625             LPFC_SLI_INTF_VALID) {
11626                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11627                                 "2894 SLI_INTF reg contents invalid "
11628                                 "sli_intf reg 0x%x\n",
11629                                 phba->sli4_hba.sli_intf.word0);
11630                 return -ENODEV;
11631         }
11632
11633         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
11634         /*
11635          * Get the bus address of SLI4 device Bar regions and the
11636          * number of bytes required by each mapping. The mapping of the
11637          * particular PCI BARs regions is dependent on the type of
11638          * SLI4 device.
11639          */
11640         if (pci_resource_start(pdev, PCI_64BIT_BAR0)) {
11641                 phba->pci_bar0_map = pci_resource_start(pdev, PCI_64BIT_BAR0);
11642                 bar0map_len = pci_resource_len(pdev, PCI_64BIT_BAR0);
11643
11644                 /*
11645                  * Map SLI4 PCI Config Space Register base to a kernel virtual
11646                  * addr
11647                  */
11648                 phba->sli4_hba.conf_regs_memmap_p =
11649                         ioremap(phba->pci_bar0_map, bar0map_len);
11650                 if (!phba->sli4_hba.conf_regs_memmap_p) {
11651                         dev_printk(KERN_ERR, &pdev->dev,
11652                                    "ioremap failed for SLI4 PCI config "
11653                                    "registers.\n");
11654                         return -ENODEV;
11655                 }
11656                 phba->pci_bar0_memmap_p = phba->sli4_hba.conf_regs_memmap_p;
11657                 /* Set up BAR0 PCI config space register memory map */
11658                 lpfc_sli4_bar0_register_memmap(phba, if_type);
11659         } else {
11660                 phba->pci_bar0_map = pci_resource_start(pdev, 1);
11661                 bar0map_len = pci_resource_len(pdev, 1);
11662                 if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
11663                         dev_printk(KERN_ERR, &pdev->dev,
11664                            "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
11665                         return -ENODEV;
11666                 }
11667                 phba->sli4_hba.conf_regs_memmap_p =
11668                                 ioremap(phba->pci_bar0_map, bar0map_len);
11669                 if (!phba->sli4_hba.conf_regs_memmap_p) {
11670                         dev_printk(KERN_ERR, &pdev->dev,
11671                                 "ioremap failed for SLI4 PCI config "
11672                                 "registers.\n");
11673                         return -ENODEV;
11674                 }
11675                 lpfc_sli4_bar0_register_memmap(phba, if_type);
11676         }
11677
11678         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
11679                 if (pci_resource_start(pdev, PCI_64BIT_BAR2)) {
11680                         /*
11681                          * Map SLI4 if type 0 HBA Control Register base to a
11682                          * kernel virtual address and setup the registers.
11683                          */
11684                         phba->pci_bar1_map = pci_resource_start(pdev,
11685                                                                 PCI_64BIT_BAR2);
11686                         bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
11687                         phba->sli4_hba.ctrl_regs_memmap_p =
11688                                         ioremap(phba->pci_bar1_map,
11689                                                 bar1map_len);
11690                         if (!phba->sli4_hba.ctrl_regs_memmap_p) {
11691                                 dev_err(&pdev->dev,
11692                                            "ioremap failed for SLI4 HBA "
11693                                             "control registers.\n");
11694                                 error = -ENOMEM;
11695                                 goto out_iounmap_conf;
11696                         }
11697                         phba->pci_bar2_memmap_p =
11698                                          phba->sli4_hba.ctrl_regs_memmap_p;
11699                         lpfc_sli4_bar1_register_memmap(phba, if_type);
11700                 } else {
11701                         error = -ENOMEM;
11702                         goto out_iounmap_conf;
11703                 }
11704         }
11705
11706         if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&
11707             (pci_resource_start(pdev, PCI_64BIT_BAR2))) {
11708                 /*
11709                  * Map SLI4 if type 6 HBA Doorbell Register base to a kernel
11710                  * virtual address and setup the registers.
11711                  */
11712                 phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);
11713                 bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
11714                 phba->sli4_hba.drbl_regs_memmap_p =
11715                                 ioremap(phba->pci_bar1_map, bar1map_len);
11716                 if (!phba->sli4_hba.drbl_regs_memmap_p) {
11717                         dev_err(&pdev->dev,
11718                            "ioremap failed for SLI4 HBA doorbell registers.\n");
11719                         error = -ENOMEM;
11720                         goto out_iounmap_conf;
11721                 }
11722                 phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;
11723                 lpfc_sli4_bar1_register_memmap(phba, if_type);
11724         }
11725
11726         if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
11727                 if (pci_resource_start(pdev, PCI_64BIT_BAR4)) {
11728                         /*
11729                          * Map SLI4 if type 0 HBA Doorbell Register base to
11730                          * a kernel virtual address and setup the registers.
11731                          */
11732                         phba->pci_bar2_map = pci_resource_start(pdev,
11733                                                                 PCI_64BIT_BAR4);
11734                         bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
11735                         phba->sli4_hba.drbl_regs_memmap_p =
11736                                         ioremap(phba->pci_bar2_map,
11737                                                 bar2map_len);
11738                         if (!phba->sli4_hba.drbl_regs_memmap_p) {
11739                                 dev_err(&pdev->dev,
11740                                            "ioremap failed for SLI4 HBA"
11741                                            " doorbell registers.\n");
11742                                 error = -ENOMEM;
11743                                 goto out_iounmap_ctrl;
11744                         }
11745                         phba->pci_bar4_memmap_p =
11746                                         phba->sli4_hba.drbl_regs_memmap_p;
11747                         error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
11748                         if (error)
11749                                 goto out_iounmap_all;
11750                 } else {
11751                         error = -ENOMEM;
11752                         goto out_iounmap_all;
11753                 }
11754         }
11755
11756         if (if_type == LPFC_SLI_INTF_IF_TYPE_6 &&
11757             pci_resource_start(pdev, PCI_64BIT_BAR4)) {
11758                 /*
11759                  * Map SLI4 if type 6 HBA DPP Register base to a kernel
11760                  * virtual address and setup the registers.
11761                  */
11762                 phba->pci_bar2_map = pci_resource_start(pdev, PCI_64BIT_BAR4);
11763                 bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
11764                 phba->sli4_hba.dpp_regs_memmap_p =
11765                                 ioremap(phba->pci_bar2_map, bar2map_len);
11766                 if (!phba->sli4_hba.dpp_regs_memmap_p) {
11767                         dev_err(&pdev->dev,
11768                            "ioremap failed for SLI4 HBA dpp registers.\n");
11769                         error = -ENOMEM;
11770                         goto out_iounmap_ctrl;
11771                 }
11772                 phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p;
11773         }
11774
11775         /* Set up the EQ/CQ register handeling functions now */
11776         switch (if_type) {
11777         case LPFC_SLI_INTF_IF_TYPE_0:
11778         case LPFC_SLI_INTF_IF_TYPE_2:
11779                 phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;
11780                 phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_write_eq_db;
11781                 phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_write_cq_db;
11782                 break;
11783         case LPFC_SLI_INTF_IF_TYPE_6:
11784                 phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;
11785                 phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_if6_write_eq_db;
11786                 phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_if6_write_cq_db;
11787                 break;
11788         default:
11789                 break;
11790         }
11791
11792         return 0;
11793
11794 out_iounmap_all:
11795         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
11796 out_iounmap_ctrl:
11797         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
11798 out_iounmap_conf:
11799         iounmap(phba->sli4_hba.conf_regs_memmap_p);
11800
11801         return error;
11802 }
11803
11804 /**
11805  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
11806  * @phba: pointer to lpfc hba data structure.
11807  *
11808  * This routine is invoked to unset the PCI device memory space for device
11809  * with SLI-4 interface spec.
11810  **/
11811 static void
11812 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
11813 {
11814         uint32_t if_type;
11815         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
11816
11817         switch (if_type) {
11818         case LPFC_SLI_INTF_IF_TYPE_0:
11819                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
11820                 iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
11821                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
11822                 break;
11823         case LPFC_SLI_INTF_IF_TYPE_2:
11824                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
11825                 break;
11826         case LPFC_SLI_INTF_IF_TYPE_6:
11827                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
11828                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
11829                 if (phba->sli4_hba.dpp_regs_memmap_p)
11830                         iounmap(phba->sli4_hba.dpp_regs_memmap_p);
11831                 break;
11832         case LPFC_SLI_INTF_IF_TYPE_1:
11833         default:
11834                 dev_printk(KERN_ERR, &phba->pcidev->dev,
11835                            "FATAL - unsupported SLI4 interface type - %d\n",
11836                            if_type);
11837                 break;
11838         }
11839 }
11840
11841 /**
11842  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
11843  * @phba: pointer to lpfc hba data structure.
11844  *
11845  * This routine is invoked to enable the MSI-X interrupt vectors to device
11846  * with SLI-3 interface specs.
11847  *
11848  * Return codes
11849  *   0 - successful
11850  *   other values - error
11851  **/
11852 static int
11853 lpfc_sli_enable_msix(struct lpfc_hba *phba)
11854 {
11855         int rc;
11856         LPFC_MBOXQ_t *pmb;
11857
11858         /* Set up MSI-X multi-message vectors */
11859         rc = pci_alloc_irq_vectors(phba->pcidev,
11860                         LPFC_MSIX_VECTORS, LPFC_MSIX_VECTORS, PCI_IRQ_MSIX);
11861         if (rc < 0) {
11862                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11863                                 "0420 PCI enable MSI-X failed (%d)\n", rc);
11864                 goto vec_fail_out;
11865         }
11866
11867         /*
11868          * Assign MSI-X vectors to interrupt handlers
11869          */
11870
11871         /* vector-0 is associated to slow-path handler */
11872         rc = request_irq(pci_irq_vector(phba->pcidev, 0),
11873                          &lpfc_sli_sp_intr_handler, 0,
11874                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
11875         if (rc) {
11876                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11877                                 "0421 MSI-X slow-path request_irq failed "
11878                                 "(%d)\n", rc);
11879                 goto msi_fail_out;
11880         }
11881
11882         /* vector-1 is associated to fast-path handler */
11883         rc = request_irq(pci_irq_vector(phba->pcidev, 1),
11884                          &lpfc_sli_fp_intr_handler, 0,
11885                          LPFC_FP_DRIVER_HANDLER_NAME, phba);
11886
11887         if (rc) {
11888                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11889                                 "0429 MSI-X fast-path request_irq failed "
11890                                 "(%d)\n", rc);
11891                 goto irq_fail_out;
11892         }
11893
11894         /*
11895          * Configure HBA MSI-X attention conditions to messages
11896          */
11897         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
11898
11899         if (!pmb) {
11900                 rc = -ENOMEM;
11901                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11902                                 "0474 Unable to allocate memory for issuing "
11903                                 "MBOX_CONFIG_MSI command\n");
11904                 goto mem_fail_out;
11905         }
11906         rc = lpfc_config_msi(phba, pmb);
11907         if (rc)
11908                 goto mbx_fail_out;
11909         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
11910         if (rc != MBX_SUCCESS) {
11911                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
11912                                 "0351 Config MSI mailbox command failed, "
11913                                 "mbxCmd x%x, mbxStatus x%x\n",
11914                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
11915                 goto mbx_fail_out;
11916         }
11917
11918         /* Free memory allocated for mailbox command */
11919         mempool_free(pmb, phba->mbox_mem_pool);
11920         return rc;
11921
11922 mbx_fail_out:
11923         /* Free memory allocated for mailbox command */
11924         mempool_free(pmb, phba->mbox_mem_pool);
11925
11926 mem_fail_out:
11927         /* free the irq already requested */
11928         free_irq(pci_irq_vector(phba->pcidev, 1), phba);
11929
11930 irq_fail_out:
11931         /* free the irq already requested */
11932         free_irq(pci_irq_vector(phba->pcidev, 0), phba);
11933
11934 msi_fail_out:
11935         /* Unconfigure MSI-X capability structure */
11936         pci_free_irq_vectors(phba->pcidev);
11937
11938 vec_fail_out:
11939         return rc;
11940 }
11941
11942 /**
11943  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
11944  * @phba: pointer to lpfc hba data structure.
11945  *
11946  * This routine is invoked to enable the MSI interrupt mode to device with
11947  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
11948  * enable the MSI vector. The device driver is responsible for calling the
11949  * request_irq() to register MSI vector with a interrupt the handler, which
11950  * is done in this function.
11951  *
11952  * Return codes
11953  *      0 - successful
11954  *      other values - error
11955  */
11956 static int
11957 lpfc_sli_enable_msi(struct lpfc_hba *phba)
11958 {
11959         int rc;
11960
11961         rc = pci_enable_msi(phba->pcidev);
11962         if (!rc)
11963                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11964                                 "0462 PCI enable MSI mode success.\n");
11965         else {
11966                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11967                                 "0471 PCI enable MSI mode failed (%d)\n", rc);
11968                 return rc;
11969         }
11970
11971         rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
11972                          0, LPFC_DRIVER_NAME, phba);
11973         if (rc) {
11974                 pci_disable_msi(phba->pcidev);
11975                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11976                                 "0478 MSI request_irq failed (%d)\n", rc);
11977         }
11978         return rc;
11979 }
11980
11981 /**
11982  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
11983  * @phba: pointer to lpfc hba data structure.
11984  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
11985  *
11986  * This routine is invoked to enable device interrupt and associate driver's
11987  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
11988  * spec. Depends on the interrupt mode configured to the driver, the driver
11989  * will try to fallback from the configured interrupt mode to an interrupt
11990  * mode which is supported by the platform, kernel, and device in the order
11991  * of:
11992  * MSI-X -> MSI -> IRQ.
11993  *
11994  * Return codes
11995  *   0 - successful
11996  *   other values - error
11997  **/
11998 static uint32_t
11999 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
12000 {
12001         uint32_t intr_mode = LPFC_INTR_ERROR;
12002         int retval;
12003
12004         /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
12005         retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
12006         if (retval)
12007                 return intr_mode;
12008         phba->hba_flag &= ~HBA_NEEDS_CFG_PORT;
12009
12010         if (cfg_mode == 2) {
12011                 /* Now, try to enable MSI-X interrupt mode */
12012                 retval = lpfc_sli_enable_msix(phba);
12013                 if (!retval) {
12014                         /* Indicate initialization to MSI-X mode */
12015                         phba->intr_type = MSIX;
12016                         intr_mode = 2;
12017                 }
12018         }
12019
12020         /* Fallback to MSI if MSI-X initialization failed */
12021         if (cfg_mode >= 1 && phba->intr_type == NONE) {
12022                 retval = lpfc_sli_enable_msi(phba);
12023                 if (!retval) {
12024                         /* Indicate initialization to MSI mode */
12025                         phba->intr_type = MSI;
12026                         intr_mode = 1;
12027                 }
12028         }
12029
12030         /* Fallback to INTx if both MSI-X/MSI initalization failed */
12031         if (phba->intr_type == NONE) {
12032                 retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
12033                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
12034                 if (!retval) {
12035                         /* Indicate initialization to INTx mode */
12036                         phba->intr_type = INTx;
12037                         intr_mode = 0;
12038                 }
12039         }
12040         return intr_mode;
12041 }
12042
12043 /**
12044  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
12045  * @phba: pointer to lpfc hba data structure.
12046  *
12047  * This routine is invoked to disable device interrupt and disassociate the
12048  * driver's interrupt handler(s) from interrupt vector(s) to device with
12049  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
12050  * release the interrupt vector(s) for the message signaled interrupt.
12051  **/
12052 static void
12053 lpfc_sli_disable_intr(struct lpfc_hba *phba)
12054 {
12055         int nr_irqs, i;
12056
12057         if (phba->intr_type == MSIX)
12058                 nr_irqs = LPFC_MSIX_VECTORS;
12059         else
12060                 nr_irqs = 1;
12061
12062         for (i = 0; i < nr_irqs; i++)
12063                 free_irq(pci_irq_vector(phba->pcidev, i), phba);
12064         pci_free_irq_vectors(phba->pcidev);
12065
12066         /* Reset interrupt management states */
12067         phba->intr_type = NONE;
12068         phba->sli.slistat.sli_intr = 0;
12069 }
12070
12071 /**
12072  * lpfc_find_cpu_handle - Find the CPU that corresponds to the specified Queue
12073  * @phba: pointer to lpfc hba data structure.
12074  * @id: EQ vector index or Hardware Queue index
12075  * @match: LPFC_FIND_BY_EQ = match by EQ
12076  *         LPFC_FIND_BY_HDWQ = match by Hardware Queue
12077  * Return the CPU that matches the selection criteria
12078  */
12079 static uint16_t
12080 lpfc_find_cpu_handle(struct lpfc_hba *phba, uint16_t id, int match)
12081 {
12082         struct lpfc_vector_map_info *cpup;
12083         int cpu;
12084
12085         /* Loop through all CPUs */
12086         for_each_present_cpu(cpu) {
12087                 cpup = &phba->sli4_hba.cpu_map[cpu];
12088
12089                 /* If we are matching by EQ, there may be multiple CPUs using
12090                  * using the same vector, so select the one with
12091                  * LPFC_CPU_FIRST_IRQ set.
12092                  */
12093                 if ((match == LPFC_FIND_BY_EQ) &&
12094                     (cpup->flag & LPFC_CPU_FIRST_IRQ) &&
12095                     (cpup->eq == id))
12096                         return cpu;
12097
12098                 /* If matching by HDWQ, select the first CPU that matches */
12099                 if ((match == LPFC_FIND_BY_HDWQ) && (cpup->hdwq == id))
12100                         return cpu;
12101         }
12102         return 0;
12103 }
12104
12105 #ifdef CONFIG_X86
12106 /**
12107  * lpfc_find_hyper - Determine if the CPU map entry is hyper-threaded
12108  * @phba: pointer to lpfc hba data structure.
12109  * @cpu: CPU map index
12110  * @phys_id: CPU package physical id
12111  * @core_id: CPU core id
12112  */
12113 static int
12114 lpfc_find_hyper(struct lpfc_hba *phba, int cpu,
12115                 uint16_t phys_id, uint16_t core_id)
12116 {
12117         struct lpfc_vector_map_info *cpup;
12118         int idx;
12119
12120         for_each_present_cpu(idx) {
12121                 cpup = &phba->sli4_hba.cpu_map[idx];
12122                 /* Does the cpup match the one we are looking for */
12123                 if ((cpup->phys_id == phys_id) &&
12124                     (cpup->core_id == core_id) &&
12125                     (cpu != idx))
12126                         return 1;
12127         }
12128         return 0;
12129 }
12130 #endif
12131
12132 /*
12133  * lpfc_assign_eq_map_info - Assigns eq for vector_map structure
12134  * @phba: pointer to lpfc hba data structure.
12135  * @eqidx: index for eq and irq vector
12136  * @flag: flags to set for vector_map structure
12137  * @cpu: cpu used to index vector_map structure
12138  *
12139  * The routine assigns eq info into vector_map structure
12140  */
12141 static inline void
12142 lpfc_assign_eq_map_info(struct lpfc_hba *phba, uint16_t eqidx, uint16_t flag,
12143                         unsigned int cpu)
12144 {
12145         struct lpfc_vector_map_info *cpup = &phba->sli4_hba.cpu_map[cpu];
12146         struct lpfc_hba_eq_hdl *eqhdl = lpfc_get_eq_hdl(eqidx);
12147
12148         cpup->eq = eqidx;
12149         cpup->flag |= flag;
12150
12151         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12152                         "3336 Set Affinity: CPU %d irq %d eq %d flag x%x\n",
12153                         cpu, eqhdl->irq, cpup->eq, cpup->flag);
12154 }
12155
12156 /**
12157  * lpfc_cpu_map_array_init - Initialize cpu_map structure
12158  * @phba: pointer to lpfc hba data structure.
12159  *
12160  * The routine initializes the cpu_map array structure
12161  */
12162 static void
12163 lpfc_cpu_map_array_init(struct lpfc_hba *phba)
12164 {
12165         struct lpfc_vector_map_info *cpup;
12166         struct lpfc_eq_intr_info *eqi;
12167         int cpu;
12168
12169         for_each_possible_cpu(cpu) {
12170                 cpup = &phba->sli4_hba.cpu_map[cpu];
12171                 cpup->phys_id = LPFC_VECTOR_MAP_EMPTY;
12172                 cpup->core_id = LPFC_VECTOR_MAP_EMPTY;
12173                 cpup->hdwq = LPFC_VECTOR_MAP_EMPTY;
12174                 cpup->eq = LPFC_VECTOR_MAP_EMPTY;
12175                 cpup->flag = 0;
12176                 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, cpu);
12177                 INIT_LIST_HEAD(&eqi->list);
12178                 eqi->icnt = 0;
12179         }
12180 }
12181
12182 /**
12183  * lpfc_hba_eq_hdl_array_init - Initialize hba_eq_hdl structure
12184  * @phba: pointer to lpfc hba data structure.
12185  *
12186  * The routine initializes the hba_eq_hdl array structure
12187  */
12188 static void
12189 lpfc_hba_eq_hdl_array_init(struct lpfc_hba *phba)
12190 {
12191         struct lpfc_hba_eq_hdl *eqhdl;
12192         int i;
12193
12194         for (i = 0; i < phba->cfg_irq_chann; i++) {
12195                 eqhdl = lpfc_get_eq_hdl(i);
12196                 eqhdl->irq = LPFC_VECTOR_MAP_EMPTY;
12197                 eqhdl->phba = phba;
12198         }
12199 }
12200
12201 /**
12202  * lpfc_cpu_affinity_check - Check vector CPU affinity mappings
12203  * @phba: pointer to lpfc hba data structure.
12204  * @vectors: number of msix vectors allocated.
12205  *
12206  * The routine will figure out the CPU affinity assignment for every
12207  * MSI-X vector allocated for the HBA.
12208  * In addition, the CPU to IO channel mapping will be calculated
12209  * and the phba->sli4_hba.cpu_map array will reflect this.
12210  */
12211 static void
12212 lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
12213 {
12214         int i, cpu, idx, next_idx, new_cpu, start_cpu, first_cpu;
12215         int max_phys_id, min_phys_id;
12216         int max_core_id, min_core_id;
12217         struct lpfc_vector_map_info *cpup;
12218         struct lpfc_vector_map_info *new_cpup;
12219 #ifdef CONFIG_X86
12220         struct cpuinfo_x86 *cpuinfo;
12221 #endif
12222 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
12223         struct lpfc_hdwq_stat *c_stat;
12224 #endif
12225
12226         max_phys_id = 0;
12227         min_phys_id = LPFC_VECTOR_MAP_EMPTY;
12228         max_core_id = 0;
12229         min_core_id = LPFC_VECTOR_MAP_EMPTY;
12230
12231         /* Update CPU map with physical id and core id of each CPU */
12232         for_each_present_cpu(cpu) {
12233                 cpup = &phba->sli4_hba.cpu_map[cpu];
12234 #ifdef CONFIG_X86
12235                 cpuinfo = &cpu_data(cpu);
12236                 cpup->phys_id = cpuinfo->phys_proc_id;
12237                 cpup->core_id = cpuinfo->cpu_core_id;
12238                 if (lpfc_find_hyper(phba, cpu, cpup->phys_id, cpup->core_id))
12239                         cpup->flag |= LPFC_CPU_MAP_HYPER;
12240 #else
12241                 /* No distinction between CPUs for other platforms */
12242                 cpup->phys_id = 0;
12243                 cpup->core_id = cpu;
12244 #endif
12245
12246                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12247                                 "3328 CPU %d physid %d coreid %d flag x%x\n",
12248                                 cpu, cpup->phys_id, cpup->core_id, cpup->flag);
12249
12250                 if (cpup->phys_id > max_phys_id)
12251                         max_phys_id = cpup->phys_id;
12252                 if (cpup->phys_id < min_phys_id)
12253                         min_phys_id = cpup->phys_id;
12254
12255                 if (cpup->core_id > max_core_id)
12256                         max_core_id = cpup->core_id;
12257                 if (cpup->core_id < min_core_id)
12258                         min_core_id = cpup->core_id;
12259         }
12260
12261         /* After looking at each irq vector assigned to this pcidev, its
12262          * possible to see that not ALL CPUs have been accounted for.
12263          * Next we will set any unassigned (unaffinitized) cpu map
12264          * entries to a IRQ on the same phys_id.
12265          */
12266         first_cpu = cpumask_first(cpu_present_mask);
12267         start_cpu = first_cpu;
12268
12269         for_each_present_cpu(cpu) {
12270                 cpup = &phba->sli4_hba.cpu_map[cpu];
12271
12272                 /* Is this CPU entry unassigned */
12273                 if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
12274                         /* Mark CPU as IRQ not assigned by the kernel */
12275                         cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
12276
12277                         /* If so, find a new_cpup thats on the the SAME
12278                          * phys_id as cpup. start_cpu will start where we
12279                          * left off so all unassigned entries don't get assgined
12280                          * the IRQ of the first entry.
12281                          */
12282                         new_cpu = start_cpu;
12283                         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
12284                                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
12285                                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
12286                                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY) &&
12287                                     (new_cpup->phys_id == cpup->phys_id))
12288                                         goto found_same;
12289                                 new_cpu = cpumask_next(
12290                                         new_cpu, cpu_present_mask);
12291                                 if (new_cpu == nr_cpumask_bits)
12292                                         new_cpu = first_cpu;
12293                         }
12294                         /* At this point, we leave the CPU as unassigned */
12295                         continue;
12296 found_same:
12297                         /* We found a matching phys_id, so copy the IRQ info */
12298                         cpup->eq = new_cpup->eq;
12299
12300                         /* Bump start_cpu to the next slot to minmize the
12301                          * chance of having multiple unassigned CPU entries
12302                          * selecting the same IRQ.
12303                          */
12304                         start_cpu = cpumask_next(new_cpu, cpu_present_mask);
12305                         if (start_cpu == nr_cpumask_bits)
12306                                 start_cpu = first_cpu;
12307
12308                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12309                                         "3337 Set Affinity: CPU %d "
12310                                         "eq %d from peer cpu %d same "
12311                                         "phys_id (%d)\n",
12312                                         cpu, cpup->eq, new_cpu,
12313                                         cpup->phys_id);
12314                 }
12315         }
12316
12317         /* Set any unassigned cpu map entries to a IRQ on any phys_id */
12318         start_cpu = first_cpu;
12319
12320         for_each_present_cpu(cpu) {
12321                 cpup = &phba->sli4_hba.cpu_map[cpu];
12322
12323                 /* Is this entry unassigned */
12324                 if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
12325                         /* Mark it as IRQ not assigned by the kernel */
12326                         cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
12327
12328                         /* If so, find a new_cpup thats on ANY phys_id
12329                          * as the cpup. start_cpu will start where we
12330                          * left off so all unassigned entries don't get
12331                          * assigned the IRQ of the first entry.
12332                          */
12333                         new_cpu = start_cpu;
12334                         for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
12335                                 new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
12336                                 if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
12337                                     (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY))
12338                                         goto found_any;
12339                                 new_cpu = cpumask_next(
12340                                         new_cpu, cpu_present_mask);
12341                                 if (new_cpu == nr_cpumask_bits)
12342                                         new_cpu = first_cpu;
12343                         }
12344                         /* We should never leave an entry unassigned */
12345                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12346                                         "3339 Set Affinity: CPU %d "
12347                                         "eq %d UNASSIGNED\n",
12348                                         cpup->hdwq, cpup->eq);
12349                         continue;
12350 found_any:
12351                         /* We found an available entry, copy the IRQ info */
12352                         cpup->eq = new_cpup->eq;
12353
12354                         /* Bump start_cpu to the next slot to minmize the
12355                          * chance of having multiple unassigned CPU entries
12356                          * selecting the same IRQ.
12357                          */
12358                         start_cpu = cpumask_next(new_cpu, cpu_present_mask);
12359                         if (start_cpu == nr_cpumask_bits)
12360                                 start_cpu = first_cpu;
12361
12362                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12363                                         "3338 Set Affinity: CPU %d "
12364                                         "eq %d from peer cpu %d (%d/%d)\n",
12365                                         cpu, cpup->eq, new_cpu,
12366                                         new_cpup->phys_id, new_cpup->core_id);
12367                 }
12368         }
12369
12370         /* Assign hdwq indices that are unique across all cpus in the map
12371          * that are also FIRST_CPUs.
12372          */
12373         idx = 0;
12374         for_each_present_cpu(cpu) {
12375                 cpup = &phba->sli4_hba.cpu_map[cpu];
12376
12377                 /* Only FIRST IRQs get a hdwq index assignment. */
12378                 if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
12379                         continue;
12380
12381                 /* 1 to 1, the first LPFC_CPU_FIRST_IRQ cpus to a unique hdwq */
12382                 cpup->hdwq = idx;
12383                 idx++;
12384                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12385                                 "3333 Set Affinity: CPU %d (phys %d core %d): "
12386                                 "hdwq %d eq %d flg x%x\n",
12387                                 cpu, cpup->phys_id, cpup->core_id,
12388                                 cpup->hdwq, cpup->eq, cpup->flag);
12389         }
12390         /* Associate a hdwq with each cpu_map entry
12391          * This will be 1 to 1 - hdwq to cpu, unless there are less
12392          * hardware queues then CPUs. For that case we will just round-robin
12393          * the available hardware queues as they get assigned to CPUs.
12394          * The next_idx is the idx from the FIRST_CPU loop above to account
12395          * for irq_chann < hdwq.  The idx is used for round-robin assignments
12396          * and needs to start at 0.
12397          */
12398         next_idx = idx;
12399         start_cpu = 0;
12400         idx = 0;
12401         for_each_present_cpu(cpu) {
12402                 cpup = &phba->sli4_hba.cpu_map[cpu];
12403
12404                 /* FIRST cpus are already mapped. */
12405                 if (cpup->flag & LPFC_CPU_FIRST_IRQ)
12406                         continue;
12407
12408                 /* If the cfg_irq_chann < cfg_hdw_queue, set the hdwq
12409                  * of the unassigned cpus to the next idx so that all
12410                  * hdw queues are fully utilized.
12411                  */
12412                 if (next_idx < phba->cfg_hdw_queue) {
12413                         cpup->hdwq = next_idx;
12414                         next_idx++;
12415                         continue;
12416                 }
12417
12418                 /* Not a First CPU and all hdw_queues are used.  Reuse a
12419                  * Hardware Queue for another CPU, so be smart about it
12420                  * and pick one that has its IRQ/EQ mapped to the same phys_id
12421                  * (CPU package) and core_id.
12422                  */
12423                 new_cpu = start_cpu;
12424                 for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
12425                         new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
12426                         if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
12427                             new_cpup->phys_id == cpup->phys_id &&
12428                             new_cpup->core_id == cpup->core_id) {
12429                                 goto found_hdwq;
12430                         }
12431                         new_cpu = cpumask_next(new_cpu, cpu_present_mask);
12432                         if (new_cpu == nr_cpumask_bits)
12433                                 new_cpu = first_cpu;
12434                 }
12435
12436                 /* If we can't match both phys_id and core_id,
12437                  * settle for just a phys_id match.
12438                  */
12439                 new_cpu = start_cpu;
12440                 for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
12441                         new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
12442                         if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
12443                             new_cpup->phys_id == cpup->phys_id)
12444                                 goto found_hdwq;
12445
12446                         new_cpu = cpumask_next(new_cpu, cpu_present_mask);
12447                         if (new_cpu == nr_cpumask_bits)
12448                                 new_cpu = first_cpu;
12449                 }
12450
12451                 /* Otherwise just round robin on cfg_hdw_queue */
12452                 cpup->hdwq = idx % phba->cfg_hdw_queue;
12453                 idx++;
12454                 goto logit;
12455  found_hdwq:
12456                 /* We found an available entry, copy the IRQ info */
12457                 start_cpu = cpumask_next(new_cpu, cpu_present_mask);
12458                 if (start_cpu == nr_cpumask_bits)
12459                         start_cpu = first_cpu;
12460                 cpup->hdwq = new_cpup->hdwq;
12461  logit:
12462                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12463                                 "3335 Set Affinity: CPU %d (phys %d core %d): "
12464                                 "hdwq %d eq %d flg x%x\n",
12465                                 cpu, cpup->phys_id, cpup->core_id,
12466                                 cpup->hdwq, cpup->eq, cpup->flag);
12467         }
12468
12469         /*
12470          * Initialize the cpu_map slots for not-present cpus in case
12471          * a cpu is hot-added. Perform a simple hdwq round robin assignment.
12472          */
12473         idx = 0;
12474         for_each_possible_cpu(cpu) {
12475                 cpup = &phba->sli4_hba.cpu_map[cpu];
12476 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
12477                 c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, cpu);
12478                 c_stat->hdwq_no = cpup->hdwq;
12479 #endif
12480                 if (cpup->hdwq != LPFC_VECTOR_MAP_EMPTY)
12481                         continue;
12482
12483                 cpup->hdwq = idx++ % phba->cfg_hdw_queue;
12484 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
12485                 c_stat->hdwq_no = cpup->hdwq;
12486 #endif
12487                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12488                                 "3340 Set Affinity: not present "
12489                                 "CPU %d hdwq %d\n",
12490                                 cpu, cpup->hdwq);
12491         }
12492
12493         /* The cpu_map array will be used later during initialization
12494          * when EQ / CQ / WQs are allocated and configured.
12495          */
12496         return;
12497 }
12498
12499 /**
12500  * lpfc_cpuhp_get_eq
12501  *
12502  * @phba:   pointer to lpfc hba data structure.
12503  * @cpu:    cpu going offline
12504  * @eqlist: eq list to append to
12505  */
12506 static int
12507 lpfc_cpuhp_get_eq(struct lpfc_hba *phba, unsigned int cpu,
12508                   struct list_head *eqlist)
12509 {
12510         const struct cpumask *maskp;
12511         struct lpfc_queue *eq;
12512         struct cpumask *tmp;
12513         u16 idx;
12514
12515         tmp = kzalloc(cpumask_size(), GFP_KERNEL);
12516         if (!tmp)
12517                 return -ENOMEM;
12518
12519         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
12520                 maskp = pci_irq_get_affinity(phba->pcidev, idx);
12521                 if (!maskp)
12522                         continue;
12523                 /*
12524                  * if irq is not affinitized to the cpu going
12525                  * then we don't need to poll the eq attached
12526                  * to it.
12527                  */
12528                 if (!cpumask_and(tmp, maskp, cpumask_of(cpu)))
12529                         continue;
12530                 /* get the cpus that are online and are affini-
12531                  * tized to this irq vector.  If the count is
12532                  * more than 1 then cpuhp is not going to shut-
12533                  * down this vector.  Since this cpu has not
12534                  * gone offline yet, we need >1.
12535                  */
12536                 cpumask_and(tmp, maskp, cpu_online_mask);
12537                 if (cpumask_weight(tmp) > 1)
12538                         continue;
12539
12540                 /* Now that we have an irq to shutdown, get the eq
12541                  * mapped to this irq.  Note: multiple hdwq's in
12542                  * the software can share an eq, but eventually
12543                  * only eq will be mapped to this vector
12544                  */
12545                 eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
12546                 list_add(&eq->_poll_list, eqlist);
12547         }
12548         kfree(tmp);
12549         return 0;
12550 }
12551
12552 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba)
12553 {
12554         if (phba->sli_rev != LPFC_SLI_REV4)
12555                 return;
12556
12557         cpuhp_state_remove_instance_nocalls(lpfc_cpuhp_state,
12558                                             &phba->cpuhp);
12559         /*
12560          * unregistering the instance doesn't stop the polling
12561          * timer. Wait for the poll timer to retire.
12562          */
12563         synchronize_rcu();
12564         del_timer_sync(&phba->cpuhp_poll_timer);
12565 }
12566
12567 static void lpfc_cpuhp_remove(struct lpfc_hba *phba)
12568 {
12569         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
12570                 return;
12571
12572         __lpfc_cpuhp_remove(phba);
12573 }
12574
12575 static void lpfc_cpuhp_add(struct lpfc_hba *phba)
12576 {
12577         if (phba->sli_rev != LPFC_SLI_REV4)
12578                 return;
12579
12580         rcu_read_lock();
12581
12582         if (!list_empty(&phba->poll_list))
12583                 mod_timer(&phba->cpuhp_poll_timer,
12584                           jiffies + msecs_to_jiffies(LPFC_POLL_HB));
12585
12586         rcu_read_unlock();
12587
12588         cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state,
12589                                          &phba->cpuhp);
12590 }
12591
12592 static int __lpfc_cpuhp_checks(struct lpfc_hba *phba, int *retval)
12593 {
12594         if (phba->pport->load_flag & FC_UNLOADING) {
12595                 *retval = -EAGAIN;
12596                 return true;
12597         }
12598
12599         if (phba->sli_rev != LPFC_SLI_REV4) {
12600                 *retval = 0;
12601                 return true;
12602         }
12603
12604         /* proceed with the hotplug */
12605         return false;
12606 }
12607
12608 /**
12609  * lpfc_irq_set_aff - set IRQ affinity
12610  * @eqhdl: EQ handle
12611  * @cpu: cpu to set affinity
12612  *
12613  **/
12614 static inline void
12615 lpfc_irq_set_aff(struct lpfc_hba_eq_hdl *eqhdl, unsigned int cpu)
12616 {
12617         cpumask_clear(&eqhdl->aff_mask);
12618         cpumask_set_cpu(cpu, &eqhdl->aff_mask);
12619         irq_set_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
12620         irq_set_affinity_hint(eqhdl->irq, &eqhdl->aff_mask);
12621 }
12622
12623 /**
12624  * lpfc_irq_clear_aff - clear IRQ affinity
12625  * @eqhdl: EQ handle
12626  *
12627  **/
12628 static inline void
12629 lpfc_irq_clear_aff(struct lpfc_hba_eq_hdl *eqhdl)
12630 {
12631         cpumask_clear(&eqhdl->aff_mask);
12632         irq_clear_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
12633 }
12634
12635 /**
12636  * lpfc_irq_rebalance - rebalances IRQ affinity according to cpuhp event
12637  * @phba: pointer to HBA context object.
12638  * @cpu: cpu going offline/online
12639  * @offline: true, cpu is going offline. false, cpu is coming online.
12640  *
12641  * If cpu is going offline, we'll try our best effort to find the next
12642  * online cpu on the phba's original_mask and migrate all offlining IRQ
12643  * affinities.
12644  *
12645  * If cpu is coming online, reaffinitize the IRQ back to the onlining cpu.
12646  *
12647  * Note: Call only if NUMA or NHT mode is enabled, otherwise rely on
12648  *       PCI_IRQ_AFFINITY to auto-manage IRQ affinity.
12649  *
12650  **/
12651 static void
12652 lpfc_irq_rebalance(struct lpfc_hba *phba, unsigned int cpu, bool offline)
12653 {
12654         struct lpfc_vector_map_info *cpup;
12655         struct cpumask *aff_mask;
12656         unsigned int cpu_select, cpu_next, idx;
12657         const struct cpumask *orig_mask;
12658
12659         if (phba->irq_chann_mode == NORMAL_MODE)
12660                 return;
12661
12662         orig_mask = &phba->sli4_hba.irq_aff_mask;
12663
12664         if (!cpumask_test_cpu(cpu, orig_mask))
12665                 return;
12666
12667         cpup = &phba->sli4_hba.cpu_map[cpu];
12668
12669         if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
12670                 return;
12671
12672         if (offline) {
12673                 /* Find next online CPU on original mask */
12674                 cpu_next = cpumask_next_wrap(cpu, orig_mask, cpu, true);
12675                 cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next);
12676
12677                 /* Found a valid CPU */
12678                 if ((cpu_select < nr_cpu_ids) && (cpu_select != cpu)) {
12679                         /* Go through each eqhdl and ensure offlining
12680                          * cpu aff_mask is migrated
12681                          */
12682                         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
12683                                 aff_mask = lpfc_get_aff_mask(idx);
12684
12685                                 /* Migrate affinity */
12686                                 if (cpumask_test_cpu(cpu, aff_mask))
12687                                         lpfc_irq_set_aff(lpfc_get_eq_hdl(idx),
12688                                                          cpu_select);
12689                         }
12690                 } else {
12691                         /* Rely on irqbalance if no online CPUs left on NUMA */
12692                         for (idx = 0; idx < phba->cfg_irq_chann; idx++)
12693                                 lpfc_irq_clear_aff(lpfc_get_eq_hdl(idx));
12694                 }
12695         } else {
12696                 /* Migrate affinity back to this CPU */
12697                 lpfc_irq_set_aff(lpfc_get_eq_hdl(cpup->eq), cpu);
12698         }
12699 }
12700
12701 static int lpfc_cpu_offline(unsigned int cpu, struct hlist_node *node)
12702 {
12703         struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
12704         struct lpfc_queue *eq, *next;
12705         LIST_HEAD(eqlist);
12706         int retval;
12707
12708         if (!phba) {
12709                 WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
12710                 return 0;
12711         }
12712
12713         if (__lpfc_cpuhp_checks(phba, &retval))
12714                 return retval;
12715
12716         lpfc_irq_rebalance(phba, cpu, true);
12717
12718         retval = lpfc_cpuhp_get_eq(phba, cpu, &eqlist);
12719         if (retval)
12720                 return retval;
12721
12722         /* start polling on these eq's */
12723         list_for_each_entry_safe(eq, next, &eqlist, _poll_list) {
12724                 list_del_init(&eq->_poll_list);
12725                 lpfc_sli4_start_polling(eq);
12726         }
12727
12728         return 0;
12729 }
12730
12731 static int lpfc_cpu_online(unsigned int cpu, struct hlist_node *node)
12732 {
12733         struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
12734         struct lpfc_queue *eq, *next;
12735         unsigned int n;
12736         int retval;
12737
12738         if (!phba) {
12739                 WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
12740                 return 0;
12741         }
12742
12743         if (__lpfc_cpuhp_checks(phba, &retval))
12744                 return retval;
12745
12746         lpfc_irq_rebalance(phba, cpu, false);
12747
12748         list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list) {
12749                 n = lpfc_find_cpu_handle(phba, eq->hdwq, LPFC_FIND_BY_HDWQ);
12750                 if (n == cpu)
12751                         lpfc_sli4_stop_polling(eq);
12752         }
12753
12754         return 0;
12755 }
12756
12757 /**
12758  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
12759  * @phba: pointer to lpfc hba data structure.
12760  *
12761  * This routine is invoked to enable the MSI-X interrupt vectors to device
12762  * with SLI-4 interface spec.  It also allocates MSI-X vectors and maps them
12763  * to cpus on the system.
12764  *
12765  * When cfg_irq_numa is enabled, the adapter will only allocate vectors for
12766  * the number of cpus on the same numa node as this adapter.  The vectors are
12767  * allocated without requesting OS affinity mapping.  A vector will be
12768  * allocated and assigned to each online and offline cpu.  If the cpu is
12769  * online, then affinity will be set to that cpu.  If the cpu is offline, then
12770  * affinity will be set to the nearest peer cpu within the numa node that is
12771  * online.  If there are no online cpus within the numa node, affinity is not
12772  * assigned and the OS may do as it pleases. Note: cpu vector affinity mapping
12773  * is consistent with the way cpu online/offline is handled when cfg_irq_numa is
12774  * configured.
12775  *
12776  * If numa mode is not enabled and there is more than 1 vector allocated, then
12777  * the driver relies on the managed irq interface where the OS assigns vector to
12778  * cpu affinity.  The driver will then use that affinity mapping to setup its
12779  * cpu mapping table.
12780  *
12781  * Return codes
12782  * 0 - successful
12783  * other values - error
12784  **/
12785 static int
12786 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
12787 {
12788         int vectors, rc, index;
12789         char *name;
12790         const struct cpumask *aff_mask = NULL;
12791         unsigned int cpu = 0, cpu_cnt = 0, cpu_select = nr_cpu_ids;
12792         struct lpfc_vector_map_info *cpup;
12793         struct lpfc_hba_eq_hdl *eqhdl;
12794         const struct cpumask *maskp;
12795         unsigned int flags = PCI_IRQ_MSIX;
12796
12797         /* Set up MSI-X multi-message vectors */
12798         vectors = phba->cfg_irq_chann;
12799
12800         if (phba->irq_chann_mode != NORMAL_MODE)
12801                 aff_mask = &phba->sli4_hba.irq_aff_mask;
12802
12803         if (aff_mask) {
12804                 cpu_cnt = cpumask_weight(aff_mask);
12805                 vectors = min(phba->cfg_irq_chann, cpu_cnt);
12806
12807                 /* cpu: iterates over aff_mask including offline or online
12808                  * cpu_select: iterates over online aff_mask to set affinity
12809                  */
12810                 cpu = cpumask_first(aff_mask);
12811                 cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
12812         } else {
12813                 flags |= PCI_IRQ_AFFINITY;
12814         }
12815
12816         rc = pci_alloc_irq_vectors(phba->pcidev, 1, vectors, flags);
12817         if (rc < 0) {
12818                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12819                                 "0484 PCI enable MSI-X failed (%d)\n", rc);
12820                 goto vec_fail_out;
12821         }
12822         vectors = rc;
12823
12824         /* Assign MSI-X vectors to interrupt handlers */
12825         for (index = 0; index < vectors; index++) {
12826                 eqhdl = lpfc_get_eq_hdl(index);
12827                 name = eqhdl->handler_name;
12828                 memset(name, 0, LPFC_SLI4_HANDLER_NAME_SZ);
12829                 snprintf(name, LPFC_SLI4_HANDLER_NAME_SZ,
12830                          LPFC_DRIVER_HANDLER_NAME"%d", index);
12831
12832                 eqhdl->idx = index;
12833                 rc = request_irq(pci_irq_vector(phba->pcidev, index),
12834                          &lpfc_sli4_hba_intr_handler, 0,
12835                          name, eqhdl);
12836                 if (rc) {
12837                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
12838                                         "0486 MSI-X fast-path (%d) "
12839                                         "request_irq failed (%d)\n", index, rc);
12840                         goto cfg_fail_out;
12841                 }
12842
12843                 eqhdl->irq = pci_irq_vector(phba->pcidev, index);
12844
12845                 if (aff_mask) {
12846                         /* If found a neighboring online cpu, set affinity */
12847                         if (cpu_select < nr_cpu_ids)
12848                                 lpfc_irq_set_aff(eqhdl, cpu_select);
12849
12850                         /* Assign EQ to cpu_map */
12851                         lpfc_assign_eq_map_info(phba, index,
12852                                                 LPFC_CPU_FIRST_IRQ,
12853                                                 cpu);
12854
12855                         /* Iterate to next offline or online cpu in aff_mask */
12856                         cpu = cpumask_next(cpu, aff_mask);
12857
12858                         /* Find next online cpu in aff_mask to set affinity */
12859                         cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
12860                 } else if (vectors == 1) {
12861                         cpu = cpumask_first(cpu_present_mask);
12862                         lpfc_assign_eq_map_info(phba, index, LPFC_CPU_FIRST_IRQ,
12863                                                 cpu);
12864                 } else {
12865                         maskp = pci_irq_get_affinity(phba->pcidev, index);
12866
12867                         /* Loop through all CPUs associated with vector index */
12868                         for_each_cpu_and(cpu, maskp, cpu_present_mask) {
12869                                 cpup = &phba->sli4_hba.cpu_map[cpu];
12870
12871                                 /* If this is the first CPU thats assigned to
12872                                  * this vector, set LPFC_CPU_FIRST_IRQ.
12873                                  *
12874                                  * With certain platforms its possible that irq
12875                                  * vectors are affinitized to all the cpu's.
12876                                  * This can result in each cpu_map.eq to be set
12877                                  * to the last vector, resulting in overwrite
12878                                  * of all the previous cpu_map.eq.  Ensure that
12879                                  * each vector receives a place in cpu_map.
12880                                  * Later call to lpfc_cpu_affinity_check will
12881                                  * ensure we are nicely balanced out.
12882                                  */
12883                                 if (cpup->eq != LPFC_VECTOR_MAP_EMPTY)
12884                                         continue;
12885                                 lpfc_assign_eq_map_info(phba, index,
12886                                                         LPFC_CPU_FIRST_IRQ,
12887                                                         cpu);
12888                                 break;
12889                         }
12890                 }
12891         }
12892
12893         if (vectors != phba->cfg_irq_chann) {
12894                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12895                                 "3238 Reducing IO channels to match number of "
12896                                 "MSI-X vectors, requested %d got %d\n",
12897                                 phba->cfg_irq_chann, vectors);
12898                 if (phba->cfg_irq_chann > vectors)
12899                         phba->cfg_irq_chann = vectors;
12900         }
12901
12902         return rc;
12903
12904 cfg_fail_out:
12905         /* free the irq already requested */
12906         for (--index; index >= 0; index--) {
12907                 eqhdl = lpfc_get_eq_hdl(index);
12908                 lpfc_irq_clear_aff(eqhdl);
12909                 irq_set_affinity_hint(eqhdl->irq, NULL);
12910                 free_irq(eqhdl->irq, eqhdl);
12911         }
12912
12913         /* Unconfigure MSI-X capability structure */
12914         pci_free_irq_vectors(phba->pcidev);
12915
12916 vec_fail_out:
12917         return rc;
12918 }
12919
12920 /**
12921  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
12922  * @phba: pointer to lpfc hba data structure.
12923  *
12924  * This routine is invoked to enable the MSI interrupt mode to device with
12925  * SLI-4 interface spec. The kernel function pci_alloc_irq_vectors() is
12926  * called to enable the MSI vector. The device driver is responsible for
12927  * calling the request_irq() to register MSI vector with a interrupt the
12928  * handler, which is done in this function.
12929  *
12930  * Return codes
12931  *      0 - successful
12932  *      other values - error
12933  **/
12934 static int
12935 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
12936 {
12937         int rc, index;
12938         unsigned int cpu;
12939         struct lpfc_hba_eq_hdl *eqhdl;
12940
12941         rc = pci_alloc_irq_vectors(phba->pcidev, 1, 1,
12942                                    PCI_IRQ_MSI | PCI_IRQ_AFFINITY);
12943         if (rc > 0)
12944                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12945                                 "0487 PCI enable MSI mode success.\n");
12946         else {
12947                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12948                                 "0488 PCI enable MSI mode failed (%d)\n", rc);
12949                 return rc ? rc : -1;
12950         }
12951
12952         rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
12953                          0, LPFC_DRIVER_NAME, phba);
12954         if (rc) {
12955                 pci_free_irq_vectors(phba->pcidev);
12956                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
12957                                 "0490 MSI request_irq failed (%d)\n", rc);
12958                 return rc;
12959         }
12960
12961         eqhdl = lpfc_get_eq_hdl(0);
12962         eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
12963
12964         cpu = cpumask_first(cpu_present_mask);
12965         lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, cpu);
12966
12967         for (index = 0; index < phba->cfg_irq_chann; index++) {
12968                 eqhdl = lpfc_get_eq_hdl(index);
12969                 eqhdl->idx = index;
12970         }
12971
12972         return 0;
12973 }
12974
12975 /**
12976  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
12977  * @phba: pointer to lpfc hba data structure.
12978  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
12979  *
12980  * This routine is invoked to enable device interrupt and associate driver's
12981  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
12982  * interface spec. Depends on the interrupt mode configured to the driver,
12983  * the driver will try to fallback from the configured interrupt mode to an
12984  * interrupt mode which is supported by the platform, kernel, and device in
12985  * the order of:
12986  * MSI-X -> MSI -> IRQ.
12987  *
12988  * Return codes
12989  *      0 - successful
12990  *      other values - error
12991  **/
12992 static uint32_t
12993 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
12994 {
12995         uint32_t intr_mode = LPFC_INTR_ERROR;
12996         int retval, idx;
12997
12998         if (cfg_mode == 2) {
12999                 /* Preparation before conf_msi mbox cmd */
13000                 retval = 0;
13001                 if (!retval) {
13002                         /* Now, try to enable MSI-X interrupt mode */
13003                         retval = lpfc_sli4_enable_msix(phba);
13004                         if (!retval) {
13005                                 /* Indicate initialization to MSI-X mode */
13006                                 phba->intr_type = MSIX;
13007                                 intr_mode = 2;
13008                         }
13009                 }
13010         }
13011
13012         /* Fallback to MSI if MSI-X initialization failed */
13013         if (cfg_mode >= 1 && phba->intr_type == NONE) {
13014                 retval = lpfc_sli4_enable_msi(phba);
13015                 if (!retval) {
13016                         /* Indicate initialization to MSI mode */
13017                         phba->intr_type = MSI;
13018                         intr_mode = 1;
13019                 }
13020         }
13021
13022         /* Fallback to INTx if both MSI-X/MSI initalization failed */
13023         if (phba->intr_type == NONE) {
13024                 retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
13025                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
13026                 if (!retval) {
13027                         struct lpfc_hba_eq_hdl *eqhdl;
13028                         unsigned int cpu;
13029
13030                         /* Indicate initialization to INTx mode */
13031                         phba->intr_type = INTx;
13032                         intr_mode = 0;
13033
13034                         eqhdl = lpfc_get_eq_hdl(0);
13035                         eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
13036
13037                         cpu = cpumask_first(cpu_present_mask);
13038                         lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ,
13039                                                 cpu);
13040                         for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
13041                                 eqhdl = lpfc_get_eq_hdl(idx);
13042                                 eqhdl->idx = idx;
13043                         }
13044                 }
13045         }
13046         return intr_mode;
13047 }
13048
13049 /**
13050  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
13051  * @phba: pointer to lpfc hba data structure.
13052  *
13053  * This routine is invoked to disable device interrupt and disassociate
13054  * the driver's interrupt handler(s) from interrupt vector(s) to device
13055  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
13056  * will release the interrupt vector(s) for the message signaled interrupt.
13057  **/
13058 static void
13059 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
13060 {
13061         /* Disable the currently initialized interrupt mode */
13062         if (phba->intr_type == MSIX) {
13063                 int index;
13064                 struct lpfc_hba_eq_hdl *eqhdl;
13065
13066                 /* Free up MSI-X multi-message vectors */
13067                 for (index = 0; index < phba->cfg_irq_chann; index++) {
13068                         eqhdl = lpfc_get_eq_hdl(index);
13069                         lpfc_irq_clear_aff(eqhdl);
13070                         irq_set_affinity_hint(eqhdl->irq, NULL);
13071                         free_irq(eqhdl->irq, eqhdl);
13072                 }
13073         } else {
13074                 free_irq(phba->pcidev->irq, phba);
13075         }
13076
13077         pci_free_irq_vectors(phba->pcidev);
13078
13079         /* Reset interrupt management states */
13080         phba->intr_type = NONE;
13081         phba->sli.slistat.sli_intr = 0;
13082 }
13083
13084 /**
13085  * lpfc_unset_hba - Unset SLI3 hba device initialization
13086  * @phba: pointer to lpfc hba data structure.
13087  *
13088  * This routine is invoked to unset the HBA device initialization steps to
13089  * a device with SLI-3 interface spec.
13090  **/
13091 static void
13092 lpfc_unset_hba(struct lpfc_hba *phba)
13093 {
13094         struct lpfc_vport *vport = phba->pport;
13095         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
13096
13097         spin_lock_irq(shost->host_lock);
13098         vport->load_flag |= FC_UNLOADING;
13099         spin_unlock_irq(shost->host_lock);
13100
13101         kfree(phba->vpi_bmask);
13102         kfree(phba->vpi_ids);
13103
13104         lpfc_stop_hba_timers(phba);
13105
13106         phba->pport->work_port_events = 0;
13107
13108         lpfc_sli_hba_down(phba);
13109
13110         lpfc_sli_brdrestart(phba);
13111
13112         lpfc_sli_disable_intr(phba);
13113
13114         return;
13115 }
13116
13117 /**
13118  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
13119  * @phba: Pointer to HBA context object.
13120  *
13121  * This function is called in the SLI4 code path to wait for completion
13122  * of device's XRIs exchange busy. It will check the XRI exchange busy
13123  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
13124  * that, it will check the XRI exchange busy on outstanding FCP and ELS
13125  * I/Os every 30 seconds, log error message, and wait forever. Only when
13126  * all XRI exchange busy complete, the driver unload shall proceed with
13127  * invoking the function reset ioctl mailbox command to the CNA and the
13128  * the rest of the driver unload resource release.
13129  **/
13130 static void
13131 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
13132 {
13133         struct lpfc_sli4_hdw_queue *qp;
13134         int idx, ccnt;
13135         int wait_time = 0;
13136         int io_xri_cmpl = 1;
13137         int nvmet_xri_cmpl = 1;
13138         int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
13139
13140         /* Driver just aborted IOs during the hba_unset process.  Pause
13141          * here to give the HBA time to complete the IO and get entries
13142          * into the abts lists.
13143          */
13144         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1 * 5);
13145
13146         /* Wait for NVME pending IO to flush back to transport. */
13147         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
13148                 lpfc_nvme_wait_for_io_drain(phba);
13149
13150         ccnt = 0;
13151         for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
13152                 qp = &phba->sli4_hba.hdwq[idx];
13153                 io_xri_cmpl = list_empty(&qp->lpfc_abts_io_buf_list);
13154                 if (!io_xri_cmpl) /* if list is NOT empty */
13155                         ccnt++;
13156         }
13157         if (ccnt)
13158                 io_xri_cmpl = 0;
13159
13160         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13161                 nvmet_xri_cmpl =
13162                         list_empty(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
13163         }
13164
13165         while (!els_xri_cmpl || !io_xri_cmpl || !nvmet_xri_cmpl) {
13166                 if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
13167                         if (!nvmet_xri_cmpl)
13168                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13169                                                 "6424 NVMET XRI exchange busy "
13170                                                 "wait time: %d seconds.\n",
13171                                                 wait_time/1000);
13172                         if (!io_xri_cmpl)
13173                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13174                                                 "6100 IO XRI exchange busy "
13175                                                 "wait time: %d seconds.\n",
13176                                                 wait_time/1000);
13177                         if (!els_xri_cmpl)
13178                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13179                                                 "2878 ELS XRI exchange busy "
13180                                                 "wait time: %d seconds.\n",
13181                                                 wait_time/1000);
13182                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
13183                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
13184                 } else {
13185                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
13186                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
13187                 }
13188
13189                 ccnt = 0;
13190                 for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
13191                         qp = &phba->sli4_hba.hdwq[idx];
13192                         io_xri_cmpl = list_empty(
13193                             &qp->lpfc_abts_io_buf_list);
13194                         if (!io_xri_cmpl) /* if list is NOT empty */
13195                                 ccnt++;
13196                 }
13197                 if (ccnt)
13198                         io_xri_cmpl = 0;
13199
13200                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13201                         nvmet_xri_cmpl = list_empty(
13202                                 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
13203                 }
13204                 els_xri_cmpl =
13205                         list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
13206
13207         }
13208 }
13209
13210 /**
13211  * lpfc_sli4_hba_unset - Unset the fcoe hba
13212  * @phba: Pointer to HBA context object.
13213  *
13214  * This function is called in the SLI4 code path to reset the HBA's FCoE
13215  * function. The caller is not required to hold any lock. This routine
13216  * issues PCI function reset mailbox command to reset the FCoE function.
13217  * At the end of the function, it calls lpfc_hba_down_post function to
13218  * free any pending commands.
13219  **/
13220 static void
13221 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
13222 {
13223         int wait_cnt = 0;
13224         LPFC_MBOXQ_t *mboxq;
13225         struct pci_dev *pdev = phba->pcidev;
13226
13227         lpfc_stop_hba_timers(phba);
13228         hrtimer_cancel(&phba->cmf_timer);
13229
13230         if (phba->pport)
13231                 phba->sli4_hba.intr_enable = 0;
13232
13233         /*
13234          * Gracefully wait out the potential current outstanding asynchronous
13235          * mailbox command.
13236          */
13237
13238         /* First, block any pending async mailbox command from posted */
13239         spin_lock_irq(&phba->hbalock);
13240         phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
13241         spin_unlock_irq(&phba->hbalock);
13242         /* Now, trying to wait it out if we can */
13243         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
13244                 msleep(10);
13245                 if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
13246                         break;
13247         }
13248         /* Forcefully release the outstanding mailbox command if timed out */
13249         if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
13250                 spin_lock_irq(&phba->hbalock);
13251                 mboxq = phba->sli.mbox_active;
13252                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
13253                 __lpfc_mbox_cmpl_put(phba, mboxq);
13254                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
13255                 phba->sli.mbox_active = NULL;
13256                 spin_unlock_irq(&phba->hbalock);
13257         }
13258
13259         /* Abort all iocbs associated with the hba */
13260         lpfc_sli_hba_iocb_abort(phba);
13261
13262         /* Wait for completion of device XRI exchange busy */
13263         lpfc_sli4_xri_exchange_busy_wait(phba);
13264
13265         /* per-phba callback de-registration for hotplug event */
13266         if (phba->pport)
13267                 lpfc_cpuhp_remove(phba);
13268
13269         /* Disable PCI subsystem interrupt */
13270         lpfc_sli4_disable_intr(phba);
13271
13272         /* Disable SR-IOV if enabled */
13273         if (phba->cfg_sriov_nr_virtfn)
13274                 pci_disable_sriov(pdev);
13275
13276         /* Stop kthread signal shall trigger work_done one more time */
13277         kthread_stop(phba->worker_thread);
13278
13279         /* Disable FW logging to host memory */
13280         lpfc_ras_stop_fwlog(phba);
13281
13282         /* Unset the queues shared with the hardware then release all
13283          * allocated resources.
13284          */
13285         lpfc_sli4_queue_unset(phba);
13286         lpfc_sli4_queue_destroy(phba);
13287
13288         /* Reset SLI4 HBA FCoE function */
13289         lpfc_pci_function_reset(phba);
13290
13291         /* Free RAS DMA memory */
13292         if (phba->ras_fwlog.ras_enabled)
13293                 lpfc_sli4_ras_dma_free(phba);
13294
13295         /* Stop the SLI4 device port */
13296         if (phba->pport)
13297                 phba->pport->work_port_events = 0;
13298 }
13299
13300 static uint32_t
13301 lpfc_cgn_crc32(uint32_t crc, u8 byte)
13302 {
13303         uint32_t msb = 0;
13304         uint32_t bit;
13305
13306         for (bit = 0; bit < 8; bit++) {
13307                 msb = (crc >> 31) & 1;
13308                 crc <<= 1;
13309
13310                 if (msb ^ (byte & 1)) {
13311                         crc ^= LPFC_CGN_CRC32_MAGIC_NUMBER;
13312                         crc |= 1;
13313                 }
13314                 byte >>= 1;
13315         }
13316         return crc;
13317 }
13318
13319 static uint32_t
13320 lpfc_cgn_reverse_bits(uint32_t wd)
13321 {
13322         uint32_t result = 0;
13323         uint32_t i;
13324
13325         for (i = 0; i < 32; i++) {
13326                 result <<= 1;
13327                 result |= (1 & (wd >> i));
13328         }
13329         return result;
13330 }
13331
13332 /*
13333  * The routine corresponds with the algorithm the HBA firmware
13334  * uses to validate the data integrity.
13335  */
13336 uint32_t
13337 lpfc_cgn_calc_crc32(void *ptr, uint32_t byteLen, uint32_t crc)
13338 {
13339         uint32_t  i;
13340         uint32_t result;
13341         uint8_t  *data = (uint8_t *)ptr;
13342
13343         for (i = 0; i < byteLen; ++i)
13344                 crc = lpfc_cgn_crc32(crc, data[i]);
13345
13346         result = ~lpfc_cgn_reverse_bits(crc);
13347         return result;
13348 }
13349
13350 void
13351 lpfc_init_congestion_buf(struct lpfc_hba *phba)
13352 {
13353         struct lpfc_cgn_info *cp;
13354         struct timespec64 cmpl_time;
13355         struct tm broken;
13356         uint16_t size;
13357         uint32_t crc;
13358
13359         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
13360                         "6235 INIT Congestion Buffer %p\n", phba->cgn_i);
13361
13362         if (!phba->cgn_i)
13363                 return;
13364         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
13365
13366         atomic_set(&phba->cgn_fabric_warn_cnt, 0);
13367         atomic_set(&phba->cgn_fabric_alarm_cnt, 0);
13368         atomic_set(&phba->cgn_sync_alarm_cnt, 0);
13369         atomic_set(&phba->cgn_sync_warn_cnt, 0);
13370
13371         atomic64_set(&phba->cgn_acqe_stat.alarm, 0);
13372         atomic64_set(&phba->cgn_acqe_stat.warn, 0);
13373         atomic_set(&phba->cgn_driver_evt_cnt, 0);
13374         atomic_set(&phba->cgn_latency_evt_cnt, 0);
13375         atomic64_set(&phba->cgn_latency_evt, 0);
13376         phba->cgn_evt_minute = 0;
13377         phba->hba_flag &= ~HBA_CGN_DAY_WRAP;
13378
13379         memset(cp, 0xff, LPFC_CGN_DATA_SIZE);
13380         cp->cgn_info_size = cpu_to_le16(LPFC_CGN_INFO_SZ);
13381         cp->cgn_info_version = LPFC_CGN_INFO_V3;
13382
13383         /* cgn parameters */
13384         cp->cgn_info_mode = phba->cgn_p.cgn_param_mode;
13385         cp->cgn_info_level0 = phba->cgn_p.cgn_param_level0;
13386         cp->cgn_info_level1 = phba->cgn_p.cgn_param_level1;
13387         cp->cgn_info_level2 = phba->cgn_p.cgn_param_level2;
13388
13389         ktime_get_real_ts64(&cmpl_time);
13390         time64_to_tm(cmpl_time.tv_sec, 0, &broken);
13391
13392         cp->cgn_info_month = broken.tm_mon + 1;
13393         cp->cgn_info_day = broken.tm_mday;
13394         cp->cgn_info_year = broken.tm_year - 100; /* relative to 2000 */
13395         cp->cgn_info_hour = broken.tm_hour;
13396         cp->cgn_info_minute = broken.tm_min;
13397         cp->cgn_info_second = broken.tm_sec;
13398
13399         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
13400                         "2643 CGNInfo Init: Start Time "
13401                         "%d/%d/%d %d:%d:%d\n",
13402                         cp->cgn_info_day, cp->cgn_info_month,
13403                         cp->cgn_info_year, cp->cgn_info_hour,
13404                         cp->cgn_info_minute, cp->cgn_info_second);
13405
13406         /* Fill in default LUN qdepth */
13407         if (phba->pport) {
13408                 size = (uint16_t)(phba->pport->cfg_lun_queue_depth);
13409                 cp->cgn_lunq = cpu_to_le16(size);
13410         }
13411
13412         /* last used Index initialized to 0xff already */
13413
13414         cp->cgn_warn_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ);
13415         cp->cgn_alarm_freq = cpu_to_le16(LPFC_FPIN_INIT_FREQ);
13416         crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED);
13417         cp->cgn_info_crc = cpu_to_le32(crc);
13418
13419         phba->cgn_evt_timestamp = jiffies +
13420                 msecs_to_jiffies(LPFC_CGN_TIMER_TO_MIN);
13421 }
13422
13423 void
13424 lpfc_init_congestion_stat(struct lpfc_hba *phba)
13425 {
13426         struct lpfc_cgn_info *cp;
13427         struct timespec64 cmpl_time;
13428         struct tm broken;
13429         uint32_t crc;
13430
13431         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
13432                         "6236 INIT Congestion Stat %p\n", phba->cgn_i);
13433
13434         if (!phba->cgn_i)
13435                 return;
13436
13437         cp = (struct lpfc_cgn_info *)phba->cgn_i->virt;
13438         memset(&cp->cgn_stat_npm, 0, LPFC_CGN_STAT_SIZE);
13439
13440         ktime_get_real_ts64(&cmpl_time);
13441         time64_to_tm(cmpl_time.tv_sec, 0, &broken);
13442
13443         cp->cgn_stat_month = broken.tm_mon + 1;
13444         cp->cgn_stat_day = broken.tm_mday;
13445         cp->cgn_stat_year = broken.tm_year - 100; /* relative to 2000 */
13446         cp->cgn_stat_hour = broken.tm_hour;
13447         cp->cgn_stat_minute = broken.tm_min;
13448
13449         lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT | LOG_INIT,
13450                         "2647 CGNstat Init: Start Time "
13451                         "%d/%d/%d %d:%d\n",
13452                         cp->cgn_stat_day, cp->cgn_stat_month,
13453                         cp->cgn_stat_year, cp->cgn_stat_hour,
13454                         cp->cgn_stat_minute);
13455
13456         crc = lpfc_cgn_calc_crc32(cp, LPFC_CGN_INFO_SZ, LPFC_CGN_CRC32_SEED);
13457         cp->cgn_info_crc = cpu_to_le32(crc);
13458 }
13459
13460 /**
13461  * __lpfc_reg_congestion_buf - register congestion info buffer with HBA
13462  * @phba: Pointer to hba context object.
13463  * @reg: flag to determine register or unregister.
13464  */
13465 static int
13466 __lpfc_reg_congestion_buf(struct lpfc_hba *phba, int reg)
13467 {
13468         struct lpfc_mbx_reg_congestion_buf *reg_congestion_buf;
13469         union  lpfc_sli4_cfg_shdr *shdr;
13470         uint32_t shdr_status, shdr_add_status;
13471         LPFC_MBOXQ_t *mboxq;
13472         int length, rc;
13473
13474         if (!phba->cgn_i)
13475                 return -ENXIO;
13476
13477         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
13478         if (!mboxq) {
13479                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
13480                                 "2641 REG_CONGESTION_BUF mbox allocation fail: "
13481                                 "HBA state x%x reg %d\n",
13482                                 phba->pport->port_state, reg);
13483                 return -ENOMEM;
13484         }
13485
13486         length = (sizeof(struct lpfc_mbx_reg_congestion_buf) -
13487                 sizeof(struct lpfc_sli4_cfg_mhdr));
13488         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
13489                          LPFC_MBOX_OPCODE_REG_CONGESTION_BUF, length,
13490                          LPFC_SLI4_MBX_EMBED);
13491         reg_congestion_buf = &mboxq->u.mqe.un.reg_congestion_buf;
13492         bf_set(lpfc_mbx_reg_cgn_buf_type, reg_congestion_buf, 1);
13493         if (reg > 0)
13494                 bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 1);
13495         else
13496                 bf_set(lpfc_mbx_reg_cgn_buf_cnt, reg_congestion_buf, 0);
13497         reg_congestion_buf->length = sizeof(struct lpfc_cgn_info);
13498         reg_congestion_buf->addr_lo =
13499                 putPaddrLow(phba->cgn_i->phys);
13500         reg_congestion_buf->addr_hi =
13501                 putPaddrHigh(phba->cgn_i->phys);
13502
13503         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
13504         shdr = (union lpfc_sli4_cfg_shdr *)
13505                 &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
13506         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
13507         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
13508                                  &shdr->response);
13509         mempool_free(mboxq, phba->mbox_mem_pool);
13510         if (shdr_status || shdr_add_status || rc) {
13511                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13512                                 "2642 REG_CONGESTION_BUF mailbox "
13513                                 "failed with status x%x add_status x%x,"
13514                                 " mbx status x%x reg %d\n",
13515                                 shdr_status, shdr_add_status, rc, reg);
13516                 return -ENXIO;
13517         }
13518         return 0;
13519 }
13520
13521 int
13522 lpfc_unreg_congestion_buf(struct lpfc_hba *phba)
13523 {
13524         lpfc_cmf_stop(phba);
13525         return __lpfc_reg_congestion_buf(phba, 0);
13526 }
13527
13528 int
13529 lpfc_reg_congestion_buf(struct lpfc_hba *phba)
13530 {
13531         return __lpfc_reg_congestion_buf(phba, 1);
13532 }
13533
13534 /**
13535  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
13536  * @phba: Pointer to HBA context object.
13537  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
13538  *
13539  * This function is called in the SLI4 code path to read the port's
13540  * sli4 capabilities.
13541  *
13542  * This function may be be called from any context that can block-wait
13543  * for the completion.  The expectation is that this routine is called
13544  * typically from probe_one or from the online routine.
13545  **/
13546 int
13547 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
13548 {
13549         int rc;
13550         struct lpfc_mqe *mqe = &mboxq->u.mqe;
13551         struct lpfc_pc_sli4_params *sli4_params;
13552         uint32_t mbox_tmo;
13553         int length;
13554         bool exp_wqcq_pages = true;
13555         struct lpfc_sli4_parameters *mbx_sli4_parameters;
13556
13557         /*
13558          * By default, the driver assumes the SLI4 port requires RPI
13559          * header postings.  The SLI4_PARAM response will correct this
13560          * assumption.
13561          */
13562         phba->sli4_hba.rpi_hdrs_in_use = 1;
13563
13564         /* Read the port's SLI4 Config Parameters */
13565         length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
13566                   sizeof(struct lpfc_sli4_cfg_mhdr));
13567         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
13568                          LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
13569                          length, LPFC_SLI4_MBX_EMBED);
13570         if (!phba->sli4_hba.intr_enable)
13571                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
13572         else {
13573                 mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
13574                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
13575         }
13576         if (unlikely(rc))
13577                 return rc;
13578         sli4_params = &phba->sli4_hba.pc_sli4_params;
13579         mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
13580         sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
13581         sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
13582         sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
13583         sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
13584                                              mbx_sli4_parameters);
13585         sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
13586                                              mbx_sli4_parameters);
13587         if (bf_get(cfg_phwq, mbx_sli4_parameters))
13588                 phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
13589         else
13590                 phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
13591         sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
13592         sli4_params->loopbk_scope = bf_get(cfg_loopbk_scope,
13593                                            mbx_sli4_parameters);
13594         sli4_params->oas_supported = bf_get(cfg_oas, mbx_sli4_parameters);
13595         sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
13596         sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
13597         sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
13598         sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
13599         sli4_params->eqav = bf_get(cfg_eqav, mbx_sli4_parameters);
13600         sli4_params->cqav = bf_get(cfg_cqav, mbx_sli4_parameters);
13601         sli4_params->wqsize = bf_get(cfg_wqsize, mbx_sli4_parameters);
13602         sli4_params->bv1s = bf_get(cfg_bv1s, mbx_sli4_parameters);
13603         sli4_params->pls = bf_get(cfg_pvl, mbx_sli4_parameters);
13604         sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
13605                                             mbx_sli4_parameters);
13606         sli4_params->wqpcnt = bf_get(cfg_wqpcnt, mbx_sli4_parameters);
13607         sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
13608                                            mbx_sli4_parameters);
13609         phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
13610         phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
13611
13612         /* Check for Extended Pre-Registered SGL support */
13613         phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);
13614
13615         /* Check for firmware nvme support */
13616         rc = (bf_get(cfg_nvme, mbx_sli4_parameters) &&
13617                      bf_get(cfg_xib, mbx_sli4_parameters));
13618
13619         if (rc) {
13620                 /* Save this to indicate the Firmware supports NVME */
13621                 sli4_params->nvme = 1;
13622
13623                 /* Firmware NVME support, check driver FC4 NVME support */
13624                 if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP) {
13625                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
13626                                         "6133 Disabling NVME support: "
13627                                         "FC4 type not supported: x%x\n",
13628                                         phba->cfg_enable_fc4_type);
13629                         goto fcponly;
13630                 }
13631         } else {
13632                 /* No firmware NVME support, check driver FC4 NVME support */
13633                 sli4_params->nvme = 0;
13634                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13635                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME,
13636                                         "6101 Disabling NVME support: Not "
13637                                         "supported by firmware (%d %d) x%x\n",
13638                                         bf_get(cfg_nvme, mbx_sli4_parameters),
13639                                         bf_get(cfg_xib, mbx_sli4_parameters),
13640                                         phba->cfg_enable_fc4_type);
13641 fcponly:
13642                         phba->nvmet_support = 0;
13643                         phba->cfg_nvmet_mrq = 0;
13644                         phba->cfg_nvme_seg_cnt = 0;
13645
13646                         /* If no FC4 type support, move to just SCSI support */
13647                         if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
13648                                 return -ENODEV;
13649                         phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
13650                 }
13651         }
13652
13653         /* If the NVME FC4 type is enabled, scale the sg_seg_cnt to
13654          * accommodate 512K and 1M IOs in a single nvme buf.
13655          */
13656         if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
13657                 phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
13658
13659         /* Enable embedded Payload BDE if support is indicated */
13660         if (bf_get(cfg_pbde, mbx_sli4_parameters))
13661                 phba->cfg_enable_pbde = 1;
13662         else
13663                 phba->cfg_enable_pbde = 0;
13664
13665         /*
13666          * To support Suppress Response feature we must satisfy 3 conditions.
13667          * lpfc_suppress_rsp module parameter must be set (default).
13668          * In SLI4-Parameters Descriptor:
13669          * Extended Inline Buffers (XIB) must be supported.
13670          * Suppress Response IU Not Supported (SRIUNS) must NOT be supported
13671          * (double negative).
13672          */
13673         if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&
13674             !(bf_get(cfg_nosr, mbx_sli4_parameters)))
13675                 phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP;
13676         else
13677                 phba->cfg_suppress_rsp = 0;
13678
13679         if (bf_get(cfg_eqdr, mbx_sli4_parameters))
13680                 phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;
13681
13682         /* Make sure that sge_supp_len can be handled by the driver */
13683         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
13684                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
13685
13686         /*
13687          * Check whether the adapter supports an embedded copy of the
13688          * FCP CMD IU within the WQE for FCP_Ixxx commands. In order
13689          * to use this option, 128-byte WQEs must be used.
13690          */
13691         if (bf_get(cfg_ext_embed_cb, mbx_sli4_parameters))
13692                 phba->fcp_embed_io = 1;
13693         else
13694                 phba->fcp_embed_io = 0;
13695
13696         lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
13697                         "6422 XIB %d PBDE %d: FCP %d NVME %d %d %d\n",
13698                         bf_get(cfg_xib, mbx_sli4_parameters),
13699                         phba->cfg_enable_pbde,
13700                         phba->fcp_embed_io, sli4_params->nvme,
13701                         phba->cfg_nvme_embed_cmd, phba->cfg_suppress_rsp);
13702
13703         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
13704             LPFC_SLI_INTF_IF_TYPE_2) &&
13705             (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
13706                  LPFC_SLI_INTF_FAMILY_LNCR_A0))
13707                 exp_wqcq_pages = false;
13708
13709         if ((bf_get(cfg_cqpsize, mbx_sli4_parameters) & LPFC_CQ_16K_PAGE_SZ) &&
13710             (bf_get(cfg_wqpsize, mbx_sli4_parameters) & LPFC_WQ_16K_PAGE_SZ) &&
13711             exp_wqcq_pages &&
13712             (sli4_params->wqsize & LPFC_WQ_SZ128_SUPPORT))
13713                 phba->enab_exp_wqcq_pages = 1;
13714         else
13715                 phba->enab_exp_wqcq_pages = 0;
13716         /*
13717          * Check if the SLI port supports MDS Diagnostics
13718          */
13719         if (bf_get(cfg_mds_diags, mbx_sli4_parameters))
13720                 phba->mds_diags_support = 1;
13721         else
13722                 phba->mds_diags_support = 0;
13723
13724         /*
13725          * Check if the SLI port supports NSLER
13726          */
13727         if (bf_get(cfg_nsler, mbx_sli4_parameters))
13728                 phba->nsler = 1;
13729         else
13730                 phba->nsler = 0;
13731
13732         return 0;
13733 }
13734
13735 /**
13736  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
13737  * @pdev: pointer to PCI device
13738  * @pid: pointer to PCI device identifier
13739  *
13740  * This routine is to be called to attach a device with SLI-3 interface spec
13741  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
13742  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
13743  * information of the device and driver to see if the driver state that it can
13744  * support this kind of device. If the match is successful, the driver core
13745  * invokes this routine. If this routine determines it can claim the HBA, it
13746  * does all the initialization that it needs to do to handle the HBA properly.
13747  *
13748  * Return code
13749  *      0 - driver can claim the device
13750  *      negative value - driver can not claim the device
13751  **/
13752 static int
13753 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
13754 {
13755         struct lpfc_hba   *phba;
13756         struct lpfc_vport *vport = NULL;
13757         struct Scsi_Host  *shost = NULL;
13758         int error;
13759         uint32_t cfg_mode, intr_mode;
13760
13761         /* Allocate memory for HBA structure */
13762         phba = lpfc_hba_alloc(pdev);
13763         if (!phba)
13764                 return -ENOMEM;
13765
13766         /* Perform generic PCI device enabling operation */
13767         error = lpfc_enable_pci_dev(phba);
13768         if (error)
13769                 goto out_free_phba;
13770
13771         /* Set up SLI API function jump table for PCI-device group-0 HBAs */
13772         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
13773         if (error)
13774                 goto out_disable_pci_dev;
13775
13776         /* Set up SLI-3 specific device PCI memory space */
13777         error = lpfc_sli_pci_mem_setup(phba);
13778         if (error) {
13779                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13780                                 "1402 Failed to set up pci memory space.\n");
13781                 goto out_disable_pci_dev;
13782         }
13783
13784         /* Set up SLI-3 specific device driver resources */
13785         error = lpfc_sli_driver_resource_setup(phba);
13786         if (error) {
13787                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13788                                 "1404 Failed to set up driver resource.\n");
13789                 goto out_unset_pci_mem_s3;
13790         }
13791
13792         /* Initialize and populate the iocb list per host */
13793
13794         error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
13795         if (error) {
13796                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13797                                 "1405 Failed to initialize iocb list.\n");
13798                 goto out_unset_driver_resource_s3;
13799         }
13800
13801         /* Set up common device driver resources */
13802         error = lpfc_setup_driver_resource_phase2(phba);
13803         if (error) {
13804                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13805                                 "1406 Failed to set up driver resource.\n");
13806                 goto out_free_iocb_list;
13807         }
13808
13809         /* Get the default values for Model Name and Description */
13810         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
13811
13812         /* Create SCSI host to the physical port */
13813         error = lpfc_create_shost(phba);
13814         if (error) {
13815                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13816                                 "1407 Failed to create scsi host.\n");
13817                 goto out_unset_driver_resource;
13818         }
13819
13820         /* Configure sysfs attributes */
13821         vport = phba->pport;
13822         error = lpfc_alloc_sysfs_attr(vport);
13823         if (error) {
13824                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13825                                 "1476 Failed to allocate sysfs attr\n");
13826                 goto out_destroy_shost;
13827         }
13828
13829         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
13830         /* Now, trying to enable interrupt and bring up the device */
13831         cfg_mode = phba->cfg_use_msi;
13832         while (true) {
13833                 /* Put device to a known state before enabling interrupt */
13834                 lpfc_stop_port(phba);
13835                 /* Configure and enable interrupt */
13836                 intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
13837                 if (intr_mode == LPFC_INTR_ERROR) {
13838                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13839                                         "0431 Failed to enable interrupt.\n");
13840                         error = -ENODEV;
13841                         goto out_free_sysfs_attr;
13842                 }
13843                 /* SLI-3 HBA setup */
13844                 if (lpfc_sli_hba_setup(phba)) {
13845                         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13846                                         "1477 Failed to set up hba\n");
13847                         error = -ENODEV;
13848                         goto out_remove_device;
13849                 }
13850
13851                 /* Wait 50ms for the interrupts of previous mailbox commands */
13852                 msleep(50);
13853                 /* Check active interrupts on message signaled interrupts */
13854                 if (intr_mode == 0 ||
13855                     phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
13856                         /* Log the current active interrupt mode */
13857                         phba->intr_mode = intr_mode;
13858                         lpfc_log_intr_mode(phba, intr_mode);
13859                         break;
13860                 } else {
13861                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13862                                         "0447 Configure interrupt mode (%d) "
13863                                         "failed active interrupt test.\n",
13864                                         intr_mode);
13865                         /* Disable the current interrupt mode */
13866                         lpfc_sli_disable_intr(phba);
13867                         /* Try next level of interrupt mode */
13868                         cfg_mode = --intr_mode;
13869                 }
13870         }
13871
13872         /* Perform post initialization setup */
13873         lpfc_post_init_setup(phba);
13874
13875         /* Check if there are static vports to be created. */
13876         lpfc_create_static_vport(phba);
13877
13878         return 0;
13879
13880 out_remove_device:
13881         lpfc_unset_hba(phba);
13882 out_free_sysfs_attr:
13883         lpfc_free_sysfs_attr(vport);
13884 out_destroy_shost:
13885         lpfc_destroy_shost(phba);
13886 out_unset_driver_resource:
13887         lpfc_unset_driver_resource_phase2(phba);
13888 out_free_iocb_list:
13889         lpfc_free_iocb_list(phba);
13890 out_unset_driver_resource_s3:
13891         lpfc_sli_driver_resource_unset(phba);
13892 out_unset_pci_mem_s3:
13893         lpfc_sli_pci_mem_unset(phba);
13894 out_disable_pci_dev:
13895         lpfc_disable_pci_dev(phba);
13896         if (shost)
13897                 scsi_host_put(shost);
13898 out_free_phba:
13899         lpfc_hba_free(phba);
13900         return error;
13901 }
13902
13903 /**
13904  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
13905  * @pdev: pointer to PCI device
13906  *
13907  * This routine is to be called to disattach a device with SLI-3 interface
13908  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
13909  * removed from PCI bus, it performs all the necessary cleanup for the HBA
13910  * device to be removed from the PCI subsystem properly.
13911  **/
13912 static void
13913 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
13914 {
13915         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
13916         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
13917         struct lpfc_vport **vports;
13918         struct lpfc_hba   *phba = vport->phba;
13919         int i;
13920
13921         spin_lock_irq(&phba->hbalock);
13922         vport->load_flag |= FC_UNLOADING;
13923         spin_unlock_irq(&phba->hbalock);
13924
13925         lpfc_free_sysfs_attr(vport);
13926
13927         /* Release all the vports against this physical port */
13928         vports = lpfc_create_vport_work_array(phba);
13929         if (vports != NULL)
13930                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
13931                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
13932                                 continue;
13933                         fc_vport_terminate(vports[i]->fc_vport);
13934                 }
13935         lpfc_destroy_vport_work_array(phba, vports);
13936
13937         /* Remove FC host with the physical port */
13938         fc_remove_host(shost);
13939         scsi_remove_host(shost);
13940
13941         /* Clean up all nodes, mailboxes and IOs. */
13942         lpfc_cleanup(vport);
13943
13944         /*
13945          * Bring down the SLI Layer. This step disable all interrupts,
13946          * clears the rings, discards all mailbox commands, and resets
13947          * the HBA.
13948          */
13949
13950         /* HBA interrupt will be disabled after this call */
13951         lpfc_sli_hba_down(phba);
13952         /* Stop kthread signal shall trigger work_done one more time */
13953         kthread_stop(phba->worker_thread);
13954         /* Final cleanup of txcmplq and reset the HBA */
13955         lpfc_sli_brdrestart(phba);
13956
13957         kfree(phba->vpi_bmask);
13958         kfree(phba->vpi_ids);
13959
13960         lpfc_stop_hba_timers(phba);
13961         spin_lock_irq(&phba->port_list_lock);
13962         list_del_init(&vport->listentry);
13963         spin_unlock_irq(&phba->port_list_lock);
13964
13965         lpfc_debugfs_terminate(vport);
13966
13967         /* Disable SR-IOV if enabled */
13968         if (phba->cfg_sriov_nr_virtfn)
13969                 pci_disable_sriov(pdev);
13970
13971         /* Disable interrupt */
13972         lpfc_sli_disable_intr(phba);
13973
13974         scsi_host_put(shost);
13975
13976         /*
13977          * Call scsi_free before mem_free since scsi bufs are released to their
13978          * corresponding pools here.
13979          */
13980         lpfc_scsi_free(phba);
13981         lpfc_free_iocb_list(phba);
13982
13983         lpfc_mem_free_all(phba);
13984
13985         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
13986                           phba->hbqslimp.virt, phba->hbqslimp.phys);
13987
13988         /* Free resources associated with SLI2 interface */
13989         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
13990                           phba->slim2p.virt, phba->slim2p.phys);
13991
13992         /* unmap adapter SLIM and Control Registers */
13993         iounmap(phba->ctrl_regs_memmap_p);
13994         iounmap(phba->slim_memmap_p);
13995
13996         lpfc_hba_free(phba);
13997
13998         pci_release_mem_regions(pdev);
13999         pci_disable_device(pdev);
14000 }
14001
14002 /**
14003  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
14004  * @dev_d: pointer to device
14005  *
14006  * This routine is to be called from the kernel's PCI subsystem to support
14007  * system Power Management (PM) to device with SLI-3 interface spec. When
14008  * PM invokes this method, it quiesces the device by stopping the driver's
14009  * worker thread for the device, turning off device's interrupt and DMA,
14010  * and bring the device offline. Note that as the driver implements the
14011  * minimum PM requirements to a power-aware driver's PM support for the
14012  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
14013  * to the suspend() method call will be treated as SUSPEND and the driver will
14014  * fully reinitialize its device during resume() method call, the driver will
14015  * set device to PCI_D3hot state in PCI config space instead of setting it
14016  * according to the @msg provided by the PM.
14017  *
14018  * Return code
14019  *      0 - driver suspended the device
14020  *      Error otherwise
14021  **/
14022 static int __maybe_unused
14023 lpfc_pci_suspend_one_s3(struct device *dev_d)
14024 {
14025         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
14026         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14027
14028         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
14029                         "0473 PCI device Power Management suspend.\n");
14030
14031         /* Bring down the device */
14032         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
14033         lpfc_offline(phba);
14034         kthread_stop(phba->worker_thread);
14035
14036         /* Disable interrupt from device */
14037         lpfc_sli_disable_intr(phba);
14038
14039         return 0;
14040 }
14041
14042 /**
14043  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
14044  * @dev_d: pointer to device
14045  *
14046  * This routine is to be called from the kernel's PCI subsystem to support
14047  * system Power Management (PM) to device with SLI-3 interface spec. When PM
14048  * invokes this method, it restores the device's PCI config space state and
14049  * fully reinitializes the device and brings it online. Note that as the
14050  * driver implements the minimum PM requirements to a power-aware driver's
14051  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
14052  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
14053  * driver will fully reinitialize its device during resume() method call,
14054  * the device will be set to PCI_D0 directly in PCI config space before
14055  * restoring the state.
14056  *
14057  * Return code
14058  *      0 - driver suspended the device
14059  *      Error otherwise
14060  **/
14061 static int __maybe_unused
14062 lpfc_pci_resume_one_s3(struct device *dev_d)
14063 {
14064         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
14065         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14066         uint32_t intr_mode;
14067         int error;
14068
14069         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
14070                         "0452 PCI device Power Management resume.\n");
14071
14072         /* Startup the kernel thread for this host adapter. */
14073         phba->worker_thread = kthread_run(lpfc_do_work, phba,
14074                                         "lpfc_worker_%d", phba->brd_no);
14075         if (IS_ERR(phba->worker_thread)) {
14076                 error = PTR_ERR(phba->worker_thread);
14077                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14078                                 "0434 PM resume failed to start worker "
14079                                 "thread: error=x%x.\n", error);
14080                 return error;
14081         }
14082
14083         /* Configure and enable interrupt */
14084         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
14085         if (intr_mode == LPFC_INTR_ERROR) {
14086                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14087                                 "0430 PM resume Failed to enable interrupt\n");
14088                 return -EIO;
14089         } else
14090                 phba->intr_mode = intr_mode;
14091
14092         /* Restart HBA and bring it online */
14093         lpfc_sli_brdrestart(phba);
14094         lpfc_online(phba);
14095
14096         /* Log the current active interrupt mode */
14097         lpfc_log_intr_mode(phba, phba->intr_mode);
14098
14099         return 0;
14100 }
14101
14102 /**
14103  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
14104  * @phba: pointer to lpfc hba data structure.
14105  *
14106  * This routine is called to prepare the SLI3 device for PCI slot recover. It
14107  * aborts all the outstanding SCSI I/Os to the pci device.
14108  **/
14109 static void
14110 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
14111 {
14112         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14113                         "2723 PCI channel I/O abort preparing for recovery\n");
14114
14115         /*
14116          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
14117          * and let the SCSI mid-layer to retry them to recover.
14118          */
14119         lpfc_sli_abort_fcp_rings(phba);
14120 }
14121
14122 /**
14123  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
14124  * @phba: pointer to lpfc hba data structure.
14125  *
14126  * This routine is called to prepare the SLI3 device for PCI slot reset. It
14127  * disables the device interrupt and pci device, and aborts the internal FCP
14128  * pending I/Os.
14129  **/
14130 static void
14131 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
14132 {
14133         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14134                         "2710 PCI channel disable preparing for reset\n");
14135
14136         /* Block any management I/Os to the device */
14137         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
14138
14139         /* Block all SCSI devices' I/Os on the host */
14140         lpfc_scsi_dev_block(phba);
14141
14142         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
14143         lpfc_sli_flush_io_rings(phba);
14144
14145         /* stop all timers */
14146         lpfc_stop_hba_timers(phba);
14147
14148         /* Disable interrupt and pci device */
14149         lpfc_sli_disable_intr(phba);
14150         pci_disable_device(phba->pcidev);
14151 }
14152
14153 /**
14154  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
14155  * @phba: pointer to lpfc hba data structure.
14156  *
14157  * This routine is called to prepare the SLI3 device for PCI slot permanently
14158  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
14159  * pending I/Os.
14160  **/
14161 static void
14162 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
14163 {
14164         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14165                         "2711 PCI channel permanent disable for failure\n");
14166         /* Block all SCSI devices' I/Os on the host */
14167         lpfc_scsi_dev_block(phba);
14168
14169         /* stop all timers */
14170         lpfc_stop_hba_timers(phba);
14171
14172         /* Clean up all driver's outstanding SCSI I/Os */
14173         lpfc_sli_flush_io_rings(phba);
14174 }
14175
14176 /**
14177  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
14178  * @pdev: pointer to PCI device.
14179  * @state: the current PCI connection state.
14180  *
14181  * This routine is called from the PCI subsystem for I/O error handling to
14182  * device with SLI-3 interface spec. This function is called by the PCI
14183  * subsystem after a PCI bus error affecting this device has been detected.
14184  * When this function is invoked, it will need to stop all the I/Os and
14185  * interrupt(s) to the device. Once that is done, it will return
14186  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
14187  * as desired.
14188  *
14189  * Return codes
14190  *      PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
14191  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
14192  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
14193  **/
14194 static pci_ers_result_t
14195 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
14196 {
14197         struct Scsi_Host *shost = pci_get_drvdata(pdev);
14198         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14199
14200         switch (state) {
14201         case pci_channel_io_normal:
14202                 /* Non-fatal error, prepare for recovery */
14203                 lpfc_sli_prep_dev_for_recover(phba);
14204                 return PCI_ERS_RESULT_CAN_RECOVER;
14205         case pci_channel_io_frozen:
14206                 /* Fatal error, prepare for slot reset */
14207                 lpfc_sli_prep_dev_for_reset(phba);
14208                 return PCI_ERS_RESULT_NEED_RESET;
14209         case pci_channel_io_perm_failure:
14210                 /* Permanent failure, prepare for device down */
14211                 lpfc_sli_prep_dev_for_perm_failure(phba);
14212                 return PCI_ERS_RESULT_DISCONNECT;
14213         default:
14214                 /* Unknown state, prepare and request slot reset */
14215                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14216                                 "0472 Unknown PCI error state: x%x\n", state);
14217                 lpfc_sli_prep_dev_for_reset(phba);
14218                 return PCI_ERS_RESULT_NEED_RESET;
14219         }
14220 }
14221
14222 /**
14223  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
14224  * @pdev: pointer to PCI device.
14225  *
14226  * This routine is called from the PCI subsystem for error handling to
14227  * device with SLI-3 interface spec. This is called after PCI bus has been
14228  * reset to restart the PCI card from scratch, as if from a cold-boot.
14229  * During the PCI subsystem error recovery, after driver returns
14230  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
14231  * recovery and then call this routine before calling the .resume method
14232  * to recover the device. This function will initialize the HBA device,
14233  * enable the interrupt, but it will just put the HBA to offline state
14234  * without passing any I/O traffic.
14235  *
14236  * Return codes
14237  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
14238  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
14239  */
14240 static pci_ers_result_t
14241 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
14242 {
14243         struct Scsi_Host *shost = pci_get_drvdata(pdev);
14244         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14245         struct lpfc_sli *psli = &phba->sli;
14246         uint32_t intr_mode;
14247
14248         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
14249         if (pci_enable_device_mem(pdev)) {
14250                 printk(KERN_ERR "lpfc: Cannot re-enable "
14251                         "PCI device after reset.\n");
14252                 return PCI_ERS_RESULT_DISCONNECT;
14253         }
14254
14255         pci_restore_state(pdev);
14256
14257         /*
14258          * As the new kernel behavior of pci_restore_state() API call clears
14259          * device saved_state flag, need to save the restored state again.
14260          */
14261         pci_save_state(pdev);
14262
14263         if (pdev->is_busmaster)
14264                 pci_set_master(pdev);
14265
14266         spin_lock_irq(&phba->hbalock);
14267         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
14268         spin_unlock_irq(&phba->hbalock);
14269
14270         /* Configure and enable interrupt */
14271         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
14272         if (intr_mode == LPFC_INTR_ERROR) {
14273                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14274                                 "0427 Cannot re-enable interrupt after "
14275                                 "slot reset.\n");
14276                 return PCI_ERS_RESULT_DISCONNECT;
14277         } else
14278                 phba->intr_mode = intr_mode;
14279
14280         /* Take device offline, it will perform cleanup */
14281         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
14282         lpfc_offline(phba);
14283         lpfc_sli_brdrestart(phba);
14284
14285         /* Log the current active interrupt mode */
14286         lpfc_log_intr_mode(phba, phba->intr_mode);
14287
14288         return PCI_ERS_RESULT_RECOVERED;
14289 }
14290
14291 /**
14292  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
14293  * @pdev: pointer to PCI device
14294  *
14295  * This routine is called from the PCI subsystem for error handling to device
14296  * with SLI-3 interface spec. It is called when kernel error recovery tells
14297  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
14298  * error recovery. After this call, traffic can start to flow from this device
14299  * again.
14300  */
14301 static void
14302 lpfc_io_resume_s3(struct pci_dev *pdev)
14303 {
14304         struct Scsi_Host *shost = pci_get_drvdata(pdev);
14305         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14306
14307         /* Bring device online, it will be no-op for non-fatal error resume */
14308         lpfc_online(phba);
14309 }
14310
14311 /**
14312  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
14313  * @phba: pointer to lpfc hba data structure.
14314  *
14315  * returns the number of ELS/CT IOCBs to reserve
14316  **/
14317 int
14318 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
14319 {
14320         int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
14321
14322         if (phba->sli_rev == LPFC_SLI_REV4) {
14323                 if (max_xri <= 100)
14324                         return 10;
14325                 else if (max_xri <= 256)
14326                         return 25;
14327                 else if (max_xri <= 512)
14328                         return 50;
14329                 else if (max_xri <= 1024)
14330                         return 100;
14331                 else if (max_xri <= 1536)
14332                         return 150;
14333                 else if (max_xri <= 2048)
14334                         return 200;
14335                 else
14336                         return 250;
14337         } else
14338                 return 0;
14339 }
14340
14341 /**
14342  * lpfc_sli4_get_iocb_cnt - Calculate the # of total IOCBs to reserve
14343  * @phba: pointer to lpfc hba data structure.
14344  *
14345  * returns the number of ELS/CT + NVMET IOCBs to reserve
14346  **/
14347 int
14348 lpfc_sli4_get_iocb_cnt(struct lpfc_hba *phba)
14349 {
14350         int max_xri = lpfc_sli4_get_els_iocb_cnt(phba);
14351
14352         if (phba->nvmet_support)
14353                 max_xri += LPFC_NVMET_BUF_POST;
14354         return max_xri;
14355 }
14356
14357
14358 static int
14359 lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset,
14360         uint32_t magic_number, uint32_t ftype, uint32_t fid, uint32_t fsize,
14361         const struct firmware *fw)
14362 {
14363         int rc;
14364         u8 sli_family;
14365
14366         sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);
14367         /* Three cases:  (1) FW was not supported on the detected adapter.
14368          * (2) FW update has been locked out administratively.
14369          * (3) Some other error during FW update.
14370          * In each case, an unmaskable message is written to the console
14371          * for admin diagnosis.
14372          */
14373         if (offset == ADD_STATUS_FW_NOT_SUPPORTED ||
14374             (sli_family == LPFC_SLI_INTF_FAMILY_G6 &&
14375              magic_number != MAGIC_NUMBER_G6) ||
14376             (sli_family == LPFC_SLI_INTF_FAMILY_G7 &&
14377              magic_number != MAGIC_NUMBER_G7) ||
14378             (sli_family == LPFC_SLI_INTF_FAMILY_G7P &&
14379              magic_number != MAGIC_NUMBER_G7P)) {
14380                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14381                                 "3030 This firmware version is not supported on"
14382                                 " this HBA model. Device:%x Magic:%x Type:%x "
14383                                 "ID:%x Size %d %zd\n",
14384                                 phba->pcidev->device, magic_number, ftype, fid,
14385                                 fsize, fw->size);
14386                 rc = -EINVAL;
14387         } else if (offset == ADD_STATUS_FW_DOWNLOAD_HW_DISABLED) {
14388                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14389                                 "3021 Firmware downloads have been prohibited "
14390                                 "by a system configuration setting on "
14391                                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
14392                                 "%zd\n",
14393                                 phba->pcidev->device, magic_number, ftype, fid,
14394                                 fsize, fw->size);
14395                 rc = -EACCES;
14396         } else {
14397                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14398                                 "3022 FW Download failed. Add Status x%x "
14399                                 "Device:%x Magic:%x Type:%x ID:%x Size %d "
14400                                 "%zd\n",
14401                                 offset, phba->pcidev->device, magic_number,
14402                                 ftype, fid, fsize, fw->size);
14403                 rc = -EIO;
14404         }
14405         return rc;
14406 }
14407
14408 /**
14409  * lpfc_write_firmware - attempt to write a firmware image to the port
14410  * @fw: pointer to firmware image returned from request_firmware.
14411  * @context: pointer to firmware image returned from request_firmware.
14412  *
14413  **/
14414 static void
14415 lpfc_write_firmware(const struct firmware *fw, void *context)
14416 {
14417         struct lpfc_hba *phba = (struct lpfc_hba *)context;
14418         char fwrev[FW_REV_STR_SIZE];
14419         struct lpfc_grp_hdr *image;
14420         struct list_head dma_buffer_list;
14421         int i, rc = 0;
14422         struct lpfc_dmabuf *dmabuf, *next;
14423         uint32_t offset = 0, temp_offset = 0;
14424         uint32_t magic_number, ftype, fid, fsize;
14425
14426         /* It can be null in no-wait mode, sanity check */
14427         if (!fw) {
14428                 rc = -ENXIO;
14429                 goto out;
14430         }
14431         image = (struct lpfc_grp_hdr *)fw->data;
14432
14433         magic_number = be32_to_cpu(image->magic_number);
14434         ftype = bf_get_be32(lpfc_grp_hdr_file_type, image);
14435         fid = bf_get_be32(lpfc_grp_hdr_id, image);
14436         fsize = be32_to_cpu(image->size);
14437
14438         INIT_LIST_HEAD(&dma_buffer_list);
14439         lpfc_decode_firmware_rev(phba, fwrev, 1);
14440         if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
14441                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14442                                 "3023 Updating Firmware, Current Version:%s "
14443                                 "New Version:%s\n",
14444                                 fwrev, image->revision);
14445                 for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
14446                         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
14447                                          GFP_KERNEL);
14448                         if (!dmabuf) {
14449                                 rc = -ENOMEM;
14450                                 goto release_out;
14451                         }
14452                         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
14453                                                           SLI4_PAGE_SIZE,
14454                                                           &dmabuf->phys,
14455                                                           GFP_KERNEL);
14456                         if (!dmabuf->virt) {
14457                                 kfree(dmabuf);
14458                                 rc = -ENOMEM;
14459                                 goto release_out;
14460                         }
14461                         list_add_tail(&dmabuf->list, &dma_buffer_list);
14462                 }
14463                 while (offset < fw->size) {
14464                         temp_offset = offset;
14465                         list_for_each_entry(dmabuf, &dma_buffer_list, list) {
14466                                 if (temp_offset + SLI4_PAGE_SIZE > fw->size) {
14467                                         memcpy(dmabuf->virt,
14468                                                fw->data + temp_offset,
14469                                                fw->size - temp_offset);
14470                                         temp_offset = fw->size;
14471                                         break;
14472                                 }
14473                                 memcpy(dmabuf->virt, fw->data + temp_offset,
14474                                        SLI4_PAGE_SIZE);
14475                                 temp_offset += SLI4_PAGE_SIZE;
14476                         }
14477                         rc = lpfc_wr_object(phba, &dma_buffer_list,
14478                                     (fw->size - offset), &offset);
14479                         if (rc) {
14480                                 rc = lpfc_log_write_firmware_error(phba, offset,
14481                                                                    magic_number,
14482                                                                    ftype,
14483                                                                    fid,
14484                                                                    fsize,
14485                                                                    fw);
14486                                 goto release_out;
14487                         }
14488                 }
14489                 rc = offset;
14490         } else
14491                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14492                                 "3029 Skipped Firmware update, Current "
14493                                 "Version:%s New Version:%s\n",
14494                                 fwrev, image->revision);
14495
14496 release_out:
14497         list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
14498                 list_del(&dmabuf->list);
14499                 dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
14500                                   dmabuf->virt, dmabuf->phys);
14501                 kfree(dmabuf);
14502         }
14503         release_firmware(fw);
14504 out:
14505         if (rc < 0)
14506                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14507                                 "3062 Firmware update error, status %d.\n", rc);
14508         else
14509                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14510                                 "3024 Firmware update success: size %d.\n", rc);
14511 }
14512
14513 /**
14514  * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade
14515  * @phba: pointer to lpfc hba data structure.
14516  * @fw_upgrade: which firmware to update.
14517  *
14518  * This routine is called to perform Linux generic firmware upgrade on device
14519  * that supports such feature.
14520  **/
14521 int
14522 lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)
14523 {
14524         uint8_t file_name[ELX_MODEL_NAME_SIZE];
14525         int ret;
14526         const struct firmware *fw;
14527
14528         /* Only supported on SLI4 interface type 2 for now */
14529         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
14530             LPFC_SLI_INTF_IF_TYPE_2)
14531                 return -EPERM;
14532
14533         snprintf(file_name, ELX_MODEL_NAME_SIZE, "%s.grp", phba->ModelName);
14534
14535         if (fw_upgrade == INT_FW_UPGRADE) {
14536                 ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT,
14537                                         file_name, &phba->pcidev->dev,
14538                                         GFP_KERNEL, (void *)phba,
14539                                         lpfc_write_firmware);
14540         } else if (fw_upgrade == RUN_FW_UPGRADE) {
14541                 ret = request_firmware(&fw, file_name, &phba->pcidev->dev);
14542                 if (!ret)
14543                         lpfc_write_firmware(fw, (void *)phba);
14544         } else {
14545                 ret = -EINVAL;
14546         }
14547
14548         return ret;
14549 }
14550
14551 /**
14552  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
14553  * @pdev: pointer to PCI device
14554  * @pid: pointer to PCI device identifier
14555  *
14556  * This routine is called from the kernel's PCI subsystem to device with
14557  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
14558  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
14559  * information of the device and driver to see if the driver state that it
14560  * can support this kind of device. If the match is successful, the driver
14561  * core invokes this routine. If this routine determines it can claim the HBA,
14562  * it does all the initialization that it needs to do to handle the HBA
14563  * properly.
14564  *
14565  * Return code
14566  *      0 - driver can claim the device
14567  *      negative value - driver can not claim the device
14568  **/
14569 static int
14570 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
14571 {
14572         struct lpfc_hba   *phba;
14573         struct lpfc_vport *vport = NULL;
14574         struct Scsi_Host  *shost = NULL;
14575         int error;
14576         uint32_t cfg_mode, intr_mode;
14577
14578         /* Allocate memory for HBA structure */
14579         phba = lpfc_hba_alloc(pdev);
14580         if (!phba)
14581                 return -ENOMEM;
14582
14583         INIT_LIST_HEAD(&phba->poll_list);
14584
14585         /* Perform generic PCI device enabling operation */
14586         error = lpfc_enable_pci_dev(phba);
14587         if (error)
14588                 goto out_free_phba;
14589
14590         /* Set up SLI API function jump table for PCI-device group-1 HBAs */
14591         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
14592         if (error)
14593                 goto out_disable_pci_dev;
14594
14595         /* Set up SLI-4 specific device PCI memory space */
14596         error = lpfc_sli4_pci_mem_setup(phba);
14597         if (error) {
14598                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14599                                 "1410 Failed to set up pci memory space.\n");
14600                 goto out_disable_pci_dev;
14601         }
14602
14603         /* Set up SLI-4 Specific device driver resources */
14604         error = lpfc_sli4_driver_resource_setup(phba);
14605         if (error) {
14606                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14607                                 "1412 Failed to set up driver resource.\n");
14608                 goto out_unset_pci_mem_s4;
14609         }
14610
14611         INIT_LIST_HEAD(&phba->active_rrq_list);
14612         INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);
14613
14614         /* Set up common device driver resources */
14615         error = lpfc_setup_driver_resource_phase2(phba);
14616         if (error) {
14617                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14618                                 "1414 Failed to set up driver resource.\n");
14619                 goto out_unset_driver_resource_s4;
14620         }
14621
14622         /* Get the default values for Model Name and Description */
14623         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
14624
14625         /* Now, trying to enable interrupt and bring up the device */
14626         cfg_mode = phba->cfg_use_msi;
14627
14628         /* Put device to a known state before enabling interrupt */
14629         phba->pport = NULL;
14630         lpfc_stop_port(phba);
14631
14632         /* Init cpu_map array */
14633         lpfc_cpu_map_array_init(phba);
14634
14635         /* Init hba_eq_hdl array */
14636         lpfc_hba_eq_hdl_array_init(phba);
14637
14638         /* Configure and enable interrupt */
14639         intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
14640         if (intr_mode == LPFC_INTR_ERROR) {
14641                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14642                                 "0426 Failed to enable interrupt.\n");
14643                 error = -ENODEV;
14644                 goto out_unset_driver_resource;
14645         }
14646         /* Default to single EQ for non-MSI-X */
14647         if (phba->intr_type != MSIX) {
14648                 phba->cfg_irq_chann = 1;
14649                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
14650                         if (phba->nvmet_support)
14651                                 phba->cfg_nvmet_mrq = 1;
14652                 }
14653         }
14654         lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);
14655
14656         /* Create SCSI host to the physical port */
14657         error = lpfc_create_shost(phba);
14658         if (error) {
14659                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14660                                 "1415 Failed to create scsi host.\n");
14661                 goto out_disable_intr;
14662         }
14663         vport = phba->pport;
14664         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
14665
14666         /* Configure sysfs attributes */
14667         error = lpfc_alloc_sysfs_attr(vport);
14668         if (error) {
14669                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14670                                 "1416 Failed to allocate sysfs attr\n");
14671                 goto out_destroy_shost;
14672         }
14673
14674         /* Set up SLI-4 HBA */
14675         if (lpfc_sli4_hba_setup(phba)) {
14676                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14677                                 "1421 Failed to set up hba\n");
14678                 error = -ENODEV;
14679                 goto out_free_sysfs_attr;
14680         }
14681
14682         /* Log the current active interrupt mode */
14683         phba->intr_mode = intr_mode;
14684         lpfc_log_intr_mode(phba, intr_mode);
14685
14686         /* Perform post initialization setup */
14687         lpfc_post_init_setup(phba);
14688
14689         /* NVME support in FW earlier in the driver load corrects the
14690          * FC4 type making a check for nvme_support unnecessary.
14691          */
14692         if (phba->nvmet_support == 0) {
14693                 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
14694                         /* Create NVME binding with nvme_fc_transport. This
14695                          * ensures the vport is initialized.  If the localport
14696                          * create fails, it should not unload the driver to
14697                          * support field issues.
14698                          */
14699                         error = lpfc_nvme_create_localport(vport);
14700                         if (error) {
14701                                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14702                                                 "6004 NVME registration "
14703                                                 "failed, error x%x\n",
14704                                                 error);
14705                         }
14706                 }
14707         }
14708
14709         /* check for firmware upgrade or downgrade */
14710         if (phba->cfg_request_firmware_upgrade)
14711                 lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);
14712
14713         /* Check if there are static vports to be created. */
14714         lpfc_create_static_vport(phba);
14715
14716         /* Enable RAS FW log support */
14717         lpfc_sli4_ras_setup(phba);
14718
14719         timer_setup(&phba->cpuhp_poll_timer, lpfc_sli4_poll_hbtimer, 0);
14720         cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state, &phba->cpuhp);
14721
14722         return 0;
14723
14724 out_free_sysfs_attr:
14725         lpfc_free_sysfs_attr(vport);
14726 out_destroy_shost:
14727         lpfc_destroy_shost(phba);
14728 out_disable_intr:
14729         lpfc_sli4_disable_intr(phba);
14730 out_unset_driver_resource:
14731         lpfc_unset_driver_resource_phase2(phba);
14732 out_unset_driver_resource_s4:
14733         lpfc_sli4_driver_resource_unset(phba);
14734 out_unset_pci_mem_s4:
14735         lpfc_sli4_pci_mem_unset(phba);
14736 out_disable_pci_dev:
14737         lpfc_disable_pci_dev(phba);
14738         if (shost)
14739                 scsi_host_put(shost);
14740 out_free_phba:
14741         lpfc_hba_free(phba);
14742         return error;
14743 }
14744
14745 /**
14746  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
14747  * @pdev: pointer to PCI device
14748  *
14749  * This routine is called from the kernel's PCI subsystem to device with
14750  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
14751  * removed from PCI bus, it performs all the necessary cleanup for the HBA
14752  * device to be removed from the PCI subsystem properly.
14753  **/
14754 static void
14755 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
14756 {
14757         struct Scsi_Host *shost = pci_get_drvdata(pdev);
14758         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
14759         struct lpfc_vport **vports;
14760         struct lpfc_hba *phba = vport->phba;
14761         int i;
14762
14763         /* Mark the device unloading flag */
14764         spin_lock_irq(&phba->hbalock);
14765         vport->load_flag |= FC_UNLOADING;
14766         spin_unlock_irq(&phba->hbalock);
14767         if (phba->cgn_i)
14768                 lpfc_unreg_congestion_buf(phba);
14769
14770         lpfc_free_sysfs_attr(vport);
14771
14772         /* Release all the vports against this physical port */
14773         vports = lpfc_create_vport_work_array(phba);
14774         if (vports != NULL)
14775                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
14776                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
14777                                 continue;
14778                         fc_vport_terminate(vports[i]->fc_vport);
14779                 }
14780         lpfc_destroy_vport_work_array(phba, vports);
14781
14782         /* Remove FC host with the physical port */
14783         fc_remove_host(shost);
14784         scsi_remove_host(shost);
14785
14786         /* Perform ndlp cleanup on the physical port.  The nvme and nvmet
14787          * localports are destroyed after to cleanup all transport memory.
14788          */
14789         lpfc_cleanup(vport);
14790         lpfc_nvmet_destroy_targetport(phba);
14791         lpfc_nvme_destroy_localport(vport);
14792
14793         /* De-allocate multi-XRI pools */
14794         if (phba->cfg_xri_rebalancing)
14795                 lpfc_destroy_multixri_pools(phba);
14796
14797         /*
14798          * Bring down the SLI Layer. This step disables all interrupts,
14799          * clears the rings, discards all mailbox commands, and resets
14800          * the HBA FCoE function.
14801          */
14802         lpfc_debugfs_terminate(vport);
14803
14804         lpfc_stop_hba_timers(phba);
14805         spin_lock_irq(&phba->port_list_lock);
14806         list_del_init(&vport->listentry);
14807         spin_unlock_irq(&phba->port_list_lock);
14808
14809         /* Perform scsi free before driver resource_unset since scsi
14810          * buffers are released to their corresponding pools here.
14811          */
14812         lpfc_io_free(phba);
14813         lpfc_free_iocb_list(phba);
14814         lpfc_sli4_hba_unset(phba);
14815
14816         lpfc_unset_driver_resource_phase2(phba);
14817         lpfc_sli4_driver_resource_unset(phba);
14818
14819         /* Unmap adapter Control and Doorbell registers */
14820         lpfc_sli4_pci_mem_unset(phba);
14821
14822         /* Release PCI resources and disable device's PCI function */
14823         scsi_host_put(shost);
14824         lpfc_disable_pci_dev(phba);
14825
14826         /* Finally, free the driver's device data structure */
14827         lpfc_hba_free(phba);
14828
14829         return;
14830 }
14831
14832 /**
14833  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
14834  * @dev_d: pointer to device
14835  *
14836  * This routine is called from the kernel's PCI subsystem to support system
14837  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
14838  * this method, it quiesces the device by stopping the driver's worker
14839  * thread for the device, turning off device's interrupt and DMA, and bring
14840  * the device offline. Note that as the driver implements the minimum PM
14841  * requirements to a power-aware driver's PM support for suspend/resume -- all
14842  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
14843  * method call will be treated as SUSPEND and the driver will fully
14844  * reinitialize its device during resume() method call, the driver will set
14845  * device to PCI_D3hot state in PCI config space instead of setting it
14846  * according to the @msg provided by the PM.
14847  *
14848  * Return code
14849  *      0 - driver suspended the device
14850  *      Error otherwise
14851  **/
14852 static int __maybe_unused
14853 lpfc_pci_suspend_one_s4(struct device *dev_d)
14854 {
14855         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
14856         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14857
14858         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
14859                         "2843 PCI device Power Management suspend.\n");
14860
14861         /* Bring down the device */
14862         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
14863         lpfc_offline(phba);
14864         kthread_stop(phba->worker_thread);
14865
14866         /* Disable interrupt from device */
14867         lpfc_sli4_disable_intr(phba);
14868         lpfc_sli4_queue_destroy(phba);
14869
14870         return 0;
14871 }
14872
14873 /**
14874  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
14875  * @dev_d: pointer to device
14876  *
14877  * This routine is called from the kernel's PCI subsystem to support system
14878  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
14879  * this method, it restores the device's PCI config space state and fully
14880  * reinitializes the device and brings it online. Note that as the driver
14881  * implements the minimum PM requirements to a power-aware driver's PM for
14882  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
14883  * to the suspend() method call will be treated as SUSPEND and the driver
14884  * will fully reinitialize its device during resume() method call, the device
14885  * will be set to PCI_D0 directly in PCI config space before restoring the
14886  * state.
14887  *
14888  * Return code
14889  *      0 - driver suspended the device
14890  *      Error otherwise
14891  **/
14892 static int __maybe_unused
14893 lpfc_pci_resume_one_s4(struct device *dev_d)
14894 {
14895         struct Scsi_Host *shost = dev_get_drvdata(dev_d);
14896         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
14897         uint32_t intr_mode;
14898         int error;
14899
14900         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
14901                         "0292 PCI device Power Management resume.\n");
14902
14903          /* Startup the kernel thread for this host adapter. */
14904         phba->worker_thread = kthread_run(lpfc_do_work, phba,
14905                                         "lpfc_worker_%d", phba->brd_no);
14906         if (IS_ERR(phba->worker_thread)) {
14907                 error = PTR_ERR(phba->worker_thread);
14908                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
14909                                 "0293 PM resume failed to start worker "
14910                                 "thread: error=x%x.\n", error);
14911                 return error;
14912         }
14913
14914         /* Configure and enable interrupt */
14915         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
14916         if (intr_mode == LPFC_INTR_ERROR) {
14917                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14918                                 "0294 PM resume Failed to enable interrupt\n");
14919                 return -EIO;
14920         } else
14921                 phba->intr_mode = intr_mode;
14922
14923         /* Restart HBA and bring it online */
14924         lpfc_sli_brdrestart(phba);
14925         lpfc_online(phba);
14926
14927         /* Log the current active interrupt mode */
14928         lpfc_log_intr_mode(phba, phba->intr_mode);
14929
14930         return 0;
14931 }
14932
14933 /**
14934  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
14935  * @phba: pointer to lpfc hba data structure.
14936  *
14937  * This routine is called to prepare the SLI4 device for PCI slot recover. It
14938  * aborts all the outstanding SCSI I/Os to the pci device.
14939  **/
14940 static void
14941 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
14942 {
14943         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14944                         "2828 PCI channel I/O abort preparing for recovery\n");
14945         /*
14946          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
14947          * and let the SCSI mid-layer to retry them to recover.
14948          */
14949         lpfc_sli_abort_fcp_rings(phba);
14950 }
14951
14952 /**
14953  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
14954  * @phba: pointer to lpfc hba data structure.
14955  *
14956  * This routine is called to prepare the SLI4 device for PCI slot reset. It
14957  * disables the device interrupt and pci device, and aborts the internal FCP
14958  * pending I/Os.
14959  **/
14960 static void
14961 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
14962 {
14963         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14964                         "2826 PCI channel disable preparing for reset\n");
14965
14966         /* Block any management I/Os to the device */
14967         lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
14968
14969         /* Block all SCSI devices' I/Os on the host */
14970         lpfc_scsi_dev_block(phba);
14971
14972         /* Flush all driver's outstanding I/Os as we are to reset */
14973         lpfc_sli_flush_io_rings(phba);
14974
14975         /* stop all timers */
14976         lpfc_stop_hba_timers(phba);
14977
14978         /* Disable interrupt and pci device */
14979         lpfc_sli4_disable_intr(phba);
14980         lpfc_sli4_queue_destroy(phba);
14981         pci_disable_device(phba->pcidev);
14982 }
14983
14984 /**
14985  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
14986  * @phba: pointer to lpfc hba data structure.
14987  *
14988  * This routine is called to prepare the SLI4 device for PCI slot permanently
14989  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
14990  * pending I/Os.
14991  **/
14992 static void
14993 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
14994 {
14995         lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
14996                         "2827 PCI channel permanent disable for failure\n");
14997
14998         /* Block all SCSI devices' I/Os on the host */
14999         lpfc_scsi_dev_block(phba);
15000
15001         /* stop all timers */
15002         lpfc_stop_hba_timers(phba);
15003
15004         /* Clean up all driver's outstanding I/Os */
15005         lpfc_sli_flush_io_rings(phba);
15006 }
15007
15008 /**
15009  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
15010  * @pdev: pointer to PCI device.
15011  * @state: the current PCI connection state.
15012  *
15013  * This routine is called from the PCI subsystem for error handling to device
15014  * with SLI-4 interface spec. This function is called by the PCI subsystem
15015  * after a PCI bus error affecting this device has been detected. When this
15016  * function is invoked, it will need to stop all the I/Os and interrupt(s)
15017  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
15018  * for the PCI subsystem to perform proper recovery as desired.
15019  *
15020  * Return codes
15021  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
15022  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
15023  **/
15024 static pci_ers_result_t
15025 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
15026 {
15027         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15028         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15029
15030         switch (state) {
15031         case pci_channel_io_normal:
15032                 /* Non-fatal error, prepare for recovery */
15033                 lpfc_sli4_prep_dev_for_recover(phba);
15034                 return PCI_ERS_RESULT_CAN_RECOVER;
15035         case pci_channel_io_frozen:
15036                 /* Fatal error, prepare for slot reset */
15037                 lpfc_sli4_prep_dev_for_reset(phba);
15038                 return PCI_ERS_RESULT_NEED_RESET;
15039         case pci_channel_io_perm_failure:
15040                 /* Permanent failure, prepare for device down */
15041                 lpfc_sli4_prep_dev_for_perm_failure(phba);
15042                 return PCI_ERS_RESULT_DISCONNECT;
15043         default:
15044                 /* Unknown state, prepare and request slot reset */
15045                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15046                                 "2825 Unknown PCI error state: x%x\n", state);
15047                 lpfc_sli4_prep_dev_for_reset(phba);
15048                 return PCI_ERS_RESULT_NEED_RESET;
15049         }
15050 }
15051
15052 /**
15053  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
15054  * @pdev: pointer to PCI device.
15055  *
15056  * This routine is called from the PCI subsystem for error handling to device
15057  * with SLI-4 interface spec. It is called after PCI bus has been reset to
15058  * restart the PCI card from scratch, as if from a cold-boot. During the
15059  * PCI subsystem error recovery, after the driver returns
15060  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
15061  * recovery and then call this routine before calling the .resume method to
15062  * recover the device. This function will initialize the HBA device, enable
15063  * the interrupt, but it will just put the HBA to offline state without
15064  * passing any I/O traffic.
15065  *
15066  * Return codes
15067  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
15068  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
15069  */
15070 static pci_ers_result_t
15071 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
15072 {
15073         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15074         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15075         struct lpfc_sli *psli = &phba->sli;
15076         uint32_t intr_mode;
15077
15078         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
15079         if (pci_enable_device_mem(pdev)) {
15080                 printk(KERN_ERR "lpfc: Cannot re-enable "
15081                         "PCI device after reset.\n");
15082                 return PCI_ERS_RESULT_DISCONNECT;
15083         }
15084
15085         pci_restore_state(pdev);
15086
15087         /*
15088          * As the new kernel behavior of pci_restore_state() API call clears
15089          * device saved_state flag, need to save the restored state again.
15090          */
15091         pci_save_state(pdev);
15092
15093         if (pdev->is_busmaster)
15094                 pci_set_master(pdev);
15095
15096         spin_lock_irq(&phba->hbalock);
15097         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
15098         spin_unlock_irq(&phba->hbalock);
15099
15100         /* Configure and enable interrupt */
15101         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
15102         if (intr_mode == LPFC_INTR_ERROR) {
15103                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15104                                 "2824 Cannot re-enable interrupt after "
15105                                 "slot reset.\n");
15106                 return PCI_ERS_RESULT_DISCONNECT;
15107         } else
15108                 phba->intr_mode = intr_mode;
15109
15110         /* Log the current active interrupt mode */
15111         lpfc_log_intr_mode(phba, phba->intr_mode);
15112
15113         return PCI_ERS_RESULT_RECOVERED;
15114 }
15115
15116 /**
15117  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
15118  * @pdev: pointer to PCI device
15119  *
15120  * This routine is called from the PCI subsystem for error handling to device
15121  * with SLI-4 interface spec. It is called when kernel error recovery tells
15122  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
15123  * error recovery. After this call, traffic can start to flow from this device
15124  * again.
15125  **/
15126 static void
15127 lpfc_io_resume_s4(struct pci_dev *pdev)
15128 {
15129         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15130         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15131
15132         /*
15133          * In case of slot reset, as function reset is performed through
15134          * mailbox command which needs DMA to be enabled, this operation
15135          * has to be moved to the io resume phase. Taking device offline
15136          * will perform the necessary cleanup.
15137          */
15138         if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
15139                 /* Perform device reset */
15140                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
15141                 lpfc_offline(phba);
15142                 lpfc_sli_brdrestart(phba);
15143                 /* Bring the device back online */
15144                 lpfc_online(phba);
15145         }
15146 }
15147
15148 /**
15149  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
15150  * @pdev: pointer to PCI device
15151  * @pid: pointer to PCI device identifier
15152  *
15153  * This routine is to be registered to the kernel's PCI subsystem. When an
15154  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
15155  * at PCI device-specific information of the device and driver to see if the
15156  * driver state that it can support this kind of device. If the match is
15157  * successful, the driver core invokes this routine. This routine dispatches
15158  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
15159  * do all the initialization that it needs to do to handle the HBA device
15160  * properly.
15161  *
15162  * Return code
15163  *      0 - driver can claim the device
15164  *      negative value - driver can not claim the device
15165  **/
15166 static int
15167 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
15168 {
15169         int rc;
15170         struct lpfc_sli_intf intf;
15171
15172         if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
15173                 return -ENODEV;
15174
15175         if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
15176             (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
15177                 rc = lpfc_pci_probe_one_s4(pdev, pid);
15178         else
15179                 rc = lpfc_pci_probe_one_s3(pdev, pid);
15180
15181         return rc;
15182 }
15183
15184 /**
15185  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
15186  * @pdev: pointer to PCI device
15187  *
15188  * This routine is to be registered to the kernel's PCI subsystem. When an
15189  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
15190  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
15191  * remove routine, which will perform all the necessary cleanup for the
15192  * device to be removed from the PCI subsystem properly.
15193  **/
15194 static void
15195 lpfc_pci_remove_one(struct pci_dev *pdev)
15196 {
15197         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15198         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15199
15200         switch (phba->pci_dev_grp) {
15201         case LPFC_PCI_DEV_LP:
15202                 lpfc_pci_remove_one_s3(pdev);
15203                 break;
15204         case LPFC_PCI_DEV_OC:
15205                 lpfc_pci_remove_one_s4(pdev);
15206                 break;
15207         default:
15208                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15209                                 "1424 Invalid PCI device group: 0x%x\n",
15210                                 phba->pci_dev_grp);
15211                 break;
15212         }
15213         return;
15214 }
15215
15216 /**
15217  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
15218  * @dev: pointer to device
15219  *
15220  * This routine is to be registered to the kernel's PCI subsystem to support
15221  * system Power Management (PM). When PM invokes this method, it dispatches
15222  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
15223  * suspend the device.
15224  *
15225  * Return code
15226  *      0 - driver suspended the device
15227  *      Error otherwise
15228  **/
15229 static int __maybe_unused
15230 lpfc_pci_suspend_one(struct device *dev)
15231 {
15232         struct Scsi_Host *shost = dev_get_drvdata(dev);
15233         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15234         int rc = -ENODEV;
15235
15236         switch (phba->pci_dev_grp) {
15237         case LPFC_PCI_DEV_LP:
15238                 rc = lpfc_pci_suspend_one_s3(dev);
15239                 break;
15240         case LPFC_PCI_DEV_OC:
15241                 rc = lpfc_pci_suspend_one_s4(dev);
15242                 break;
15243         default:
15244                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15245                                 "1425 Invalid PCI device group: 0x%x\n",
15246                                 phba->pci_dev_grp);
15247                 break;
15248         }
15249         return rc;
15250 }
15251
15252 /**
15253  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
15254  * @dev: pointer to device
15255  *
15256  * This routine is to be registered to the kernel's PCI subsystem to support
15257  * system Power Management (PM). When PM invokes this method, it dispatches
15258  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
15259  * resume the device.
15260  *
15261  * Return code
15262  *      0 - driver suspended the device
15263  *      Error otherwise
15264  **/
15265 static int __maybe_unused
15266 lpfc_pci_resume_one(struct device *dev)
15267 {
15268         struct Scsi_Host *shost = dev_get_drvdata(dev);
15269         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15270         int rc = -ENODEV;
15271
15272         switch (phba->pci_dev_grp) {
15273         case LPFC_PCI_DEV_LP:
15274                 rc = lpfc_pci_resume_one_s3(dev);
15275                 break;
15276         case LPFC_PCI_DEV_OC:
15277                 rc = lpfc_pci_resume_one_s4(dev);
15278                 break;
15279         default:
15280                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15281                                 "1426 Invalid PCI device group: 0x%x\n",
15282                                 phba->pci_dev_grp);
15283                 break;
15284         }
15285         return rc;
15286 }
15287
15288 /**
15289  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
15290  * @pdev: pointer to PCI device.
15291  * @state: the current PCI connection state.
15292  *
15293  * This routine is registered to the PCI subsystem for error handling. This
15294  * function is called by the PCI subsystem after a PCI bus error affecting
15295  * this device has been detected. When this routine is invoked, it dispatches
15296  * the action to the proper SLI-3 or SLI-4 device error detected handling
15297  * routine, which will perform the proper error detected operation.
15298  *
15299  * Return codes
15300  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
15301  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
15302  **/
15303 static pci_ers_result_t
15304 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
15305 {
15306         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15307         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15308         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
15309
15310         switch (phba->pci_dev_grp) {
15311         case LPFC_PCI_DEV_LP:
15312                 rc = lpfc_io_error_detected_s3(pdev, state);
15313                 break;
15314         case LPFC_PCI_DEV_OC:
15315                 rc = lpfc_io_error_detected_s4(pdev, state);
15316                 break;
15317         default:
15318                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15319                                 "1427 Invalid PCI device group: 0x%x\n",
15320                                 phba->pci_dev_grp);
15321                 break;
15322         }
15323         return rc;
15324 }
15325
15326 /**
15327  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
15328  * @pdev: pointer to PCI device.
15329  *
15330  * This routine is registered to the PCI subsystem for error handling. This
15331  * function is called after PCI bus has been reset to restart the PCI card
15332  * from scratch, as if from a cold-boot. When this routine is invoked, it
15333  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
15334  * routine, which will perform the proper device reset.
15335  *
15336  * Return codes
15337  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
15338  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
15339  **/
15340 static pci_ers_result_t
15341 lpfc_io_slot_reset(struct pci_dev *pdev)
15342 {
15343         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15344         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15345         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
15346
15347         switch (phba->pci_dev_grp) {
15348         case LPFC_PCI_DEV_LP:
15349                 rc = lpfc_io_slot_reset_s3(pdev);
15350                 break;
15351         case LPFC_PCI_DEV_OC:
15352                 rc = lpfc_io_slot_reset_s4(pdev);
15353                 break;
15354         default:
15355                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15356                                 "1428 Invalid PCI device group: 0x%x\n",
15357                                 phba->pci_dev_grp);
15358                 break;
15359         }
15360         return rc;
15361 }
15362
15363 /**
15364  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
15365  * @pdev: pointer to PCI device
15366  *
15367  * This routine is registered to the PCI subsystem for error handling. It
15368  * is called when kernel error recovery tells the lpfc driver that it is
15369  * OK to resume normal PCI operation after PCI bus error recovery. When
15370  * this routine is invoked, it dispatches the action to the proper SLI-3
15371  * or SLI-4 device io_resume routine, which will resume the device operation.
15372  **/
15373 static void
15374 lpfc_io_resume(struct pci_dev *pdev)
15375 {
15376         struct Scsi_Host *shost = pci_get_drvdata(pdev);
15377         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
15378
15379         switch (phba->pci_dev_grp) {
15380         case LPFC_PCI_DEV_LP:
15381                 lpfc_io_resume_s3(pdev);
15382                 break;
15383         case LPFC_PCI_DEV_OC:
15384                 lpfc_io_resume_s4(pdev);
15385                 break;
15386         default:
15387                 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
15388                                 "1429 Invalid PCI device group: 0x%x\n",
15389                                 phba->pci_dev_grp);
15390                 break;
15391         }
15392         return;
15393 }
15394
15395 /**
15396  * lpfc_sli4_oas_verify - Verify OAS is supported by this adapter
15397  * @phba: pointer to lpfc hba data structure.
15398  *
15399  * This routine checks to see if OAS is supported for this adapter. If
15400  * supported, the configure Flash Optimized Fabric flag is set.  Otherwise,
15401  * the enable oas flag is cleared and the pool created for OAS device data
15402  * is destroyed.
15403  *
15404  **/
15405 static void
15406 lpfc_sli4_oas_verify(struct lpfc_hba *phba)
15407 {
15408
15409         if (!phba->cfg_EnableXLane)
15410                 return;
15411
15412         if (phba->sli4_hba.pc_sli4_params.oas_supported) {
15413                 phba->cfg_fof = 1;
15414         } else {
15415                 phba->cfg_fof = 0;
15416                 mempool_destroy(phba->device_data_mem_pool);
15417                 phba->device_data_mem_pool = NULL;
15418         }
15419
15420         return;
15421 }
15422
15423 /**
15424  * lpfc_sli4_ras_init - Verify RAS-FW log is supported by this adapter
15425  * @phba: pointer to lpfc hba data structure.
15426  *
15427  * This routine checks to see if RAS is supported by the adapter. Check the
15428  * function through which RAS support enablement is to be done.
15429  **/
15430 void
15431 lpfc_sli4_ras_init(struct lpfc_hba *phba)
15432 {
15433         /* if ASIC_GEN_NUM >= 0xC) */
15434         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
15435                     LPFC_SLI_INTF_IF_TYPE_6) ||
15436             (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
15437                     LPFC_SLI_INTF_FAMILY_G6)) {
15438                 phba->ras_fwlog.ras_hwsupport = true;
15439                 if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) &&
15440                     phba->cfg_ras_fwlog_buffsize)
15441                         phba->ras_fwlog.ras_enabled = true;
15442                 else
15443                         phba->ras_fwlog.ras_enabled = false;
15444         } else {
15445                 phba->ras_fwlog.ras_hwsupport = false;
15446         }
15447 }
15448
15449
15450 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
15451
15452 static const struct pci_error_handlers lpfc_err_handler = {
15453         .error_detected = lpfc_io_error_detected,
15454         .slot_reset = lpfc_io_slot_reset,
15455         .resume = lpfc_io_resume,
15456 };
15457
15458 static SIMPLE_DEV_PM_OPS(lpfc_pci_pm_ops_one,
15459                          lpfc_pci_suspend_one,
15460                          lpfc_pci_resume_one);
15461
15462 static struct pci_driver lpfc_driver = {
15463         .name           = LPFC_DRIVER_NAME,
15464         .id_table       = lpfc_id_table,
15465         .probe          = lpfc_pci_probe_one,
15466         .remove         = lpfc_pci_remove_one,
15467         .shutdown       = lpfc_pci_remove_one,
15468         .driver.pm      = &lpfc_pci_pm_ops_one,
15469         .err_handler    = &lpfc_err_handler,
15470 };
15471
15472 static const struct file_operations lpfc_mgmt_fop = {
15473         .owner = THIS_MODULE,
15474 };
15475
15476 static struct miscdevice lpfc_mgmt_dev = {
15477         .minor = MISC_DYNAMIC_MINOR,
15478         .name = "lpfcmgmt",
15479         .fops = &lpfc_mgmt_fop,
15480 };
15481
15482 /**
15483  * lpfc_init - lpfc module initialization routine
15484  *
15485  * This routine is to be invoked when the lpfc module is loaded into the
15486  * kernel. The special kernel macro module_init() is used to indicate the
15487  * role of this routine to the kernel as lpfc module entry point.
15488  *
15489  * Return codes
15490  *   0 - successful
15491  *   -ENOMEM - FC attach transport failed
15492  *   all others - failed
15493  */
15494 static int __init
15495 lpfc_init(void)
15496 {
15497         int error = 0;
15498
15499         pr_info(LPFC_MODULE_DESC "\n");
15500         pr_info(LPFC_COPYRIGHT "\n");
15501
15502         error = misc_register(&lpfc_mgmt_dev);
15503         if (error)
15504                 printk(KERN_ERR "Could not register lpfcmgmt device, "
15505                         "misc_register returned with status %d", error);
15506
15507         error = -ENOMEM;
15508         lpfc_transport_functions.vport_create = lpfc_vport_create;
15509         lpfc_transport_functions.vport_delete = lpfc_vport_delete;
15510         lpfc_transport_template =
15511                                 fc_attach_transport(&lpfc_transport_functions);
15512         if (lpfc_transport_template == NULL)
15513                 goto unregister;
15514         lpfc_vport_transport_template =
15515                 fc_attach_transport(&lpfc_vport_transport_functions);
15516         if (lpfc_vport_transport_template == NULL) {
15517                 fc_release_transport(lpfc_transport_template);
15518                 goto unregister;
15519         }
15520         lpfc_wqe_cmd_template();
15521         lpfc_nvmet_cmd_template();
15522
15523         /* Initialize in case vector mapping is needed */
15524         lpfc_present_cpu = num_present_cpus();
15525
15526         error = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
15527                                         "lpfc/sli4:online",
15528                                         lpfc_cpu_online, lpfc_cpu_offline);
15529         if (error < 0)
15530                 goto cpuhp_failure;
15531         lpfc_cpuhp_state = error;
15532
15533         error = pci_register_driver(&lpfc_driver);
15534         if (error)
15535                 goto unwind;
15536
15537         return error;
15538
15539 unwind:
15540         cpuhp_remove_multi_state(lpfc_cpuhp_state);
15541 cpuhp_failure:
15542         fc_release_transport(lpfc_transport_template);
15543         fc_release_transport(lpfc_vport_transport_template);
15544 unregister:
15545         misc_deregister(&lpfc_mgmt_dev);
15546
15547         return error;
15548 }
15549
15550 void lpfc_dmp_dbg(struct lpfc_hba *phba)
15551 {
15552         unsigned int start_idx;
15553         unsigned int dbg_cnt;
15554         unsigned int temp_idx;
15555         int i;
15556         int j = 0;
15557         unsigned long rem_nsec, iflags;
15558         bool log_verbose = false;
15559         struct lpfc_vport *port_iterator;
15560
15561         /* Don't dump messages if we explicitly set log_verbose for the
15562          * physical port or any vport.
15563          */
15564         if (phba->cfg_log_verbose)
15565                 return;
15566
15567         spin_lock_irqsave(&phba->port_list_lock, iflags);
15568         list_for_each_entry(port_iterator, &phba->port_list, listentry) {
15569                 if (port_iterator->load_flag & FC_UNLOADING)
15570                         continue;
15571                 if (scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
15572                         if (port_iterator->cfg_log_verbose)
15573                                 log_verbose = true;
15574
15575                         scsi_host_put(lpfc_shost_from_vport(port_iterator));
15576
15577                         if (log_verbose) {
15578                                 spin_unlock_irqrestore(&phba->port_list_lock,
15579                                                        iflags);
15580                                 return;
15581                         }
15582                 }
15583         }
15584         spin_unlock_irqrestore(&phba->port_list_lock, iflags);
15585
15586         if (atomic_cmpxchg(&phba->dbg_log_dmping, 0, 1) != 0)
15587                 return;
15588
15589         start_idx = (unsigned int)atomic_read(&phba->dbg_log_idx) % DBG_LOG_SZ;
15590         dbg_cnt = (unsigned int)atomic_read(&phba->dbg_log_cnt);
15591         if (!dbg_cnt)
15592                 goto out;
15593         temp_idx = start_idx;
15594         if (dbg_cnt >= DBG_LOG_SZ) {
15595                 dbg_cnt = DBG_LOG_SZ;
15596                 temp_idx -= 1;
15597         } else {
15598                 if ((start_idx + dbg_cnt) > (DBG_LOG_SZ - 1)) {
15599                         temp_idx = (start_idx + dbg_cnt) % DBG_LOG_SZ;
15600                 } else {
15601                         if (start_idx < dbg_cnt)
15602                                 start_idx = DBG_LOG_SZ - (dbg_cnt - start_idx);
15603                         else
15604                                 start_idx -= dbg_cnt;
15605                 }
15606         }
15607         dev_info(&phba->pcidev->dev, "start %d end %d cnt %d\n",
15608                  start_idx, temp_idx, dbg_cnt);
15609
15610         for (i = 0; i < dbg_cnt; i++) {
15611                 if ((start_idx + i) < DBG_LOG_SZ)
15612                         temp_idx = (start_idx + i) % DBG_LOG_SZ;
15613                 else
15614                         temp_idx = j++;
15615                 rem_nsec = do_div(phba->dbg_log[temp_idx].t_ns, NSEC_PER_SEC);
15616                 dev_info(&phba->pcidev->dev, "%d: [%5lu.%06lu] %s",
15617                          temp_idx,
15618                          (unsigned long)phba->dbg_log[temp_idx].t_ns,
15619                          rem_nsec / 1000,
15620                          phba->dbg_log[temp_idx].log);
15621         }
15622 out:
15623         atomic_set(&phba->dbg_log_cnt, 0);
15624         atomic_set(&phba->dbg_log_dmping, 0);
15625 }
15626
15627 __printf(2, 3)
15628 void lpfc_dbg_print(struct lpfc_hba *phba, const char *fmt, ...)
15629 {
15630         unsigned int idx;
15631         va_list args;
15632         int dbg_dmping = atomic_read(&phba->dbg_log_dmping);
15633         struct va_format vaf;
15634
15635
15636         va_start(args, fmt);
15637         if (unlikely(dbg_dmping)) {
15638                 vaf.fmt = fmt;
15639                 vaf.va = &args;
15640                 dev_info(&phba->pcidev->dev, "%pV", &vaf);
15641                 va_end(args);
15642                 return;
15643         }
15644         idx = (unsigned int)atomic_fetch_add(1, &phba->dbg_log_idx) %
15645                 DBG_LOG_SZ;
15646
15647         atomic_inc(&phba->dbg_log_cnt);
15648
15649         vscnprintf(phba->dbg_log[idx].log,
15650                    sizeof(phba->dbg_log[idx].log), fmt, args);
15651         va_end(args);
15652
15653         phba->dbg_log[idx].t_ns = local_clock();
15654 }
15655
15656 /**
15657  * lpfc_exit - lpfc module removal routine
15658  *
15659  * This routine is invoked when the lpfc module is removed from the kernel.
15660  * The special kernel macro module_exit() is used to indicate the role of
15661  * this routine to the kernel as lpfc module exit point.
15662  */
15663 static void __exit
15664 lpfc_exit(void)
15665 {
15666         misc_deregister(&lpfc_mgmt_dev);
15667         pci_unregister_driver(&lpfc_driver);
15668         cpuhp_remove_multi_state(lpfc_cpuhp_state);
15669         fc_release_transport(lpfc_transport_template);
15670         fc_release_transport(lpfc_vport_transport_template);
15671         idr_destroy(&lpfc_hba_index);
15672 }
15673
15674 module_init(lpfc_init);
15675 module_exit(lpfc_exit);
15676 MODULE_LICENSE("GPL");
15677 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
15678 MODULE_AUTHOR("Broadcom");
15679 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);