drivers/scsi/qedi/qedi_main.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic iSCSI Offload Driver
   4  * Copyright (c) 2016 Cavium Inc.
   5  */
   6
   7 #include <linux/module.h>
   8 #include <linux/pci.h>
   9 #include <linux/kernel.h>
  10 #include <linux/if_arp.h>
  11 #include <scsi/iscsi_if.h>
  12 #include <linux/inet.h>
  13 #include <net/arp.h>
  14 #include <linux/list.h>
  15 #include <linux/kthread.h>
  16 #include <linux/mm.h>
  17 #include <linux/if_vlan.h>
  18 #include <linux/cpu.h>
  19 #include <linux/iscsi_boot_sysfs.h>
  20
  21 #include <scsi/scsi_cmnd.h>
  22 #include <scsi/scsi_device.h>
  23 #include <scsi/scsi_eh.h>
  24 #include <scsi/scsi_host.h>
  25 #include <scsi/scsi.h>
  26
  27 #include "qedi.h"
  28 #include "qedi_gbl.h"
  29 #include "qedi_iscsi.h"
  30
  31 static uint qedi_qed_debug;
  32 module_param(qedi_qed_debug, uint, 0644);
  33 MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)");
  34
  35 static uint qedi_fw_debug;
  36 module_param(qedi_fw_debug, uint, 0644);
  37 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
  38
  39 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
  40 module_param(qedi_dbg_log, uint, 0644);
  41 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
  42
  43 uint qedi_io_tracing;
  44 module_param(qedi_io_tracing, uint, 0644);
  45 MODULE_PARM_DESC(qedi_io_tracing,
  46                  " Enable logging of SCSI requests/completions into trace buffer. (default off).");
  47
  48 static uint qedi_ll2_buf_size = 0x400;
  49 module_param(qedi_ll2_buf_size, uint, 0644);
  50 MODULE_PARM_DESC(qedi_ll2_buf_size,
  51                  "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
  52
  53 static uint qedi_flags_override;
  54 module_param(qedi_flags_override, uint, 0644);
  55 MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action.");
  56
  57 const struct qed_iscsi_ops *qedi_ops;
  58 static struct scsi_transport_template *qedi_scsi_transport;
  59 static struct pci_driver qedi_pci_driver;
  60 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
  61 static LIST_HEAD(qedi_udev_list);
  62 /* Static function declaration */
  63 static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
  64 static void qedi_free_global_queues(struct qedi_ctx *qedi);
  65 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
  66 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
  67 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
  68 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
  69 static void qedi_recovery_handler(struct work_struct *work);
  70 static void qedi_schedule_hw_err_handler(void *dev,
  71                                          enum qed_hw_err_type err_type);
  72
  73 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
  74 {
  75         struct qedi_ctx *qedi;
  76         struct qedi_endpoint *qedi_ep;
  77         struct iscsi_eqe_data *data;
  78         int rval = 0;
  79
  80         if (!context || !fw_handle) {
  81                 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
  82                 return -EINVAL;
  83         }
  84
  85         qedi = (struct qedi_ctx *)context;
  86         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  87                   "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
  88
  89         data = (struct iscsi_eqe_data *)fw_handle;
  90         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  91                   "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
  92                    data->icid, data->conn_id, data->error_code,
  93                    data->error_pdu_opcode_reserved);
  94
  95         qedi_ep = qedi->ep_tbl[data->icid];
  96
  97         if (!qedi_ep) {
  98                 QEDI_WARN(&qedi->dbg_ctx,
  99                           "Cannot process event, ep already disconnected, cid=0x%x\n",
 100                            data->icid);
 101                 WARN_ON(1);
 102                 return -ENODEV;
 103         }
 104
 105         switch (fw_event_code) {
 106         case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
 107                 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
 108                         qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
 109
 110                 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 111                 break;
 112         case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
 113                 qedi_ep->state = EP_STATE_DISCONN_COMPL;
 114                 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 115                 break;
 116         case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
 117                 qedi_process_iscsi_error(qedi_ep, data);
 118                 break;
 119         case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
 120         case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
 121         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
 122         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
 123         case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
 124         case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
 125         case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
 126                 qedi_process_tcp_error(qedi_ep, data);
 127                 break;
 128         default:
 129                 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
 130                          fw_event_code);
 131         }
 132
 133         return rval;
 134 }
 135
 136 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
 137 {
 138         struct qedi_uio_dev *udev = uinfo->priv;
 139         struct qedi_ctx *qedi = udev->qedi;
 140
 141         if (!capable(CAP_NET_ADMIN))
 142                 return -EPERM;
 143
 144         if (udev->uio_dev != -1)
 145                 return -EBUSY;
 146
 147         rtnl_lock();
 148         udev->uio_dev = iminor(inode);
 149         qedi_reset_uio_rings(udev);
 150         set_bit(UIO_DEV_OPENED, &qedi->flags);
 151         rtnl_unlock();
 152
 153         return 0;
 154 }
 155
 156 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
 157 {
 158         struct qedi_uio_dev *udev = uinfo->priv;
 159         struct qedi_ctx *qedi = udev->qedi;
 160
 161         udev->uio_dev = -1;
 162         clear_bit(UIO_DEV_OPENED, &qedi->flags);
 163         qedi_ll2_free_skbs(qedi);
 164         return 0;
 165 }
 166
 167 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
 168 {
 169         if (udev->uctrl) {
 170                 free_page((unsigned long)udev->uctrl);
 171                 udev->uctrl = NULL;
 172         }
 173
 174         if (udev->ll2_ring) {
 175                 free_page((unsigned long)udev->ll2_ring);
 176                 udev->ll2_ring = NULL;
 177         }
 178
 179         if (udev->ll2_buf) {
 180                 free_pages((unsigned long)udev->ll2_buf, 2);
 181                 udev->ll2_buf = NULL;
 182         }
 183 }
 184
 185 static void __qedi_free_uio(struct qedi_uio_dev *udev)
 186 {
 187         uio_unregister_device(&udev->qedi_uinfo);
 188
 189         __qedi_free_uio_rings(udev);
 190
 191         pci_dev_put(udev->pdev);
 192         kfree(udev);
 193 }
 194
 195 static void qedi_free_uio(struct qedi_uio_dev *udev)
 196 {
 197         if (!udev)
 198                 return;
 199
 200         list_del_init(&udev->list);
 201         __qedi_free_uio(udev);
 202 }
 203
 204 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
 205 {
 206         struct qedi_ctx *qedi = NULL;
 207         struct qedi_uio_ctrl *uctrl = NULL;
 208
 209         qedi = udev->qedi;
 210         uctrl = udev->uctrl;
 211
 212         spin_lock_bh(&qedi->ll2_lock);
 213         uctrl->host_rx_cons = 0;
 214         uctrl->hw_rx_prod = 0;
 215         uctrl->hw_rx_bd_prod = 0;
 216         uctrl->host_rx_bd_cons = 0;
 217
 218         memset(udev->ll2_ring, 0, udev->ll2_ring_size);
 219         memset(udev->ll2_buf, 0, udev->ll2_buf_size);
 220         spin_unlock_bh(&qedi->ll2_lock);
 221 }
 222
 223 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
 224 {
 225         int rc = 0;
 226
 227         if (udev->ll2_ring || udev->ll2_buf)
 228                 return rc;
 229
 230         /* Memory for control area.  */
 231         udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
 232         if (!udev->uctrl)
 233                 return -ENOMEM;
 234
 235         /* Allocating memory for LL2 ring  */
 236         udev->ll2_ring_size = QEDI_PAGE_SIZE;
 237         udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
 238         if (!udev->ll2_ring) {
 239                 rc = -ENOMEM;
 240                 goto exit_alloc_ring;
 241         }
 242
 243         /* Allocating memory for Tx/Rx pkt buffer */
 244         udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
 245         udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
 246         udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
 247                                                  __GFP_ZERO, 2);
 248         if (!udev->ll2_buf) {
 249                 rc = -ENOMEM;
 250                 goto exit_alloc_buf;
 251         }
 252         return rc;
 253
 254 exit_alloc_buf:
 255         free_page((unsigned long)udev->ll2_ring);
 256         udev->ll2_ring = NULL;
 257 exit_alloc_ring:
 258         return rc;
 259 }
 260
 261 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
 262 {
 263         struct qedi_uio_dev *udev = NULL;
 264         int rc = 0;
 265
 266         list_for_each_entry(udev, &qedi_udev_list, list) {
 267                 if (udev->pdev == qedi->pdev) {
 268                         udev->qedi = qedi;
 269                         if (__qedi_alloc_uio_rings(udev)) {
 270                                 udev->qedi = NULL;
 271                                 return -ENOMEM;
 272                         }
 273                         qedi->udev = udev;
 274                         return 0;
 275                 }
 276         }
 277
 278         udev = kzalloc(sizeof(*udev), GFP_KERNEL);
 279         if (!udev)
 280                 goto err_udev;
 281
 282         udev->uio_dev = -1;
 283
 284         udev->qedi = qedi;
 285         udev->pdev = qedi->pdev;
 286
 287         rc = __qedi_alloc_uio_rings(udev);
 288         if (rc)
 289                 goto err_uctrl;
 290
 291         list_add(&udev->list, &qedi_udev_list);
 292
 293         pci_dev_get(udev->pdev);
 294         qedi->udev = udev;
 295
 296         udev->tx_pkt = udev->ll2_buf;
 297         udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
 298         return 0;
 299
 300  err_uctrl:
 301         kfree(udev);
 302  err_udev:
 303         return -ENOMEM;
 304 }
 305
 306 static int qedi_init_uio(struct qedi_ctx *qedi)
 307 {
 308         struct qedi_uio_dev *udev = qedi->udev;
 309         struct uio_info *uinfo;
 310         int ret = 0;
 311
 312         if (!udev)
 313                 return -ENOMEM;
 314
 315         uinfo = &udev->qedi_uinfo;
 316
 317         uinfo->mem[0].addr = (unsigned long)udev->uctrl;
 318         uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
 319         uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
 320
 321         uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
 322         uinfo->mem[1].size = udev->ll2_ring_size;
 323         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 324
 325         uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
 326         uinfo->mem[2].size = udev->ll2_buf_size;
 327         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 328
 329         uinfo->name = "qedi_uio";
 330         uinfo->version = QEDI_MODULE_VERSION;
 331         uinfo->irq = UIO_IRQ_CUSTOM;
 332
 333         uinfo->open = qedi_uio_open;
 334         uinfo->release = qedi_uio_close;
 335
 336         if (udev->uio_dev == -1) {
 337                 if (!uinfo->priv) {
 338                         uinfo->priv = udev;
 339
 340                         ret = uio_register_device(&udev->pdev->dev, uinfo);
 341                         if (ret) {
 342                                 QEDI_ERR(&qedi->dbg_ctx,
 343                                          "UIO registration failed\n");
 344                         }
 345                 }
 346         }
 347
 348         return ret;
 349 }
 350
 351 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
 352                                   struct qed_sb_info *sb_info, u16 sb_id)
 353 {
 354         struct status_block *sb_virt;
 355         dma_addr_t sb_phys;
 356         int ret;
 357
 358         sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
 359                                      sizeof(struct status_block), &sb_phys,
 360                                      GFP_KERNEL);
 361         if (!sb_virt) {
 362                 QEDI_ERR(&qedi->dbg_ctx,
 363                          "Status block allocation failed for id = %d.\n",
 364                           sb_id);
 365                 return -ENOMEM;
 366         }
 367
 368         ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
 369                                        sb_id, QED_SB_TYPE_STORAGE);
 370         if (ret) {
 371                 QEDI_ERR(&qedi->dbg_ctx,
 372                          "Status block initialization failed for id = %d.\n",
 373                           sb_id);
 374                 return ret;
 375         }
 376
 377         return 0;
 378 }
 379
 380 static void qedi_free_sb(struct qedi_ctx *qedi)
 381 {
 382         struct qed_sb_info *sb_info;
 383         int id;
 384
 385         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 386                 sb_info = &qedi->sb_array[id];
 387                 if (sb_info->sb_virt)
 388                         dma_free_coherent(&qedi->pdev->dev,
 389                                           sizeof(*sb_info->sb_virt),
 390                                           (void *)sb_info->sb_virt,
 391                                           sb_info->sb_phys);
 392         }
 393 }
 394
 395 static void qedi_free_fp(struct qedi_ctx *qedi)
 396 {
 397         kfree(qedi->fp_array);
 398         kfree(qedi->sb_array);
 399 }
 400
 401 static void qedi_destroy_fp(struct qedi_ctx *qedi)
 402 {
 403         qedi_free_sb(qedi);
 404         qedi_free_fp(qedi);
 405 }
 406
 407 static int qedi_alloc_fp(struct qedi_ctx *qedi)
 408 {
 409         int ret = 0;
 410
 411         qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 412                                  sizeof(struct qedi_fastpath), GFP_KERNEL);
 413         if (!qedi->fp_array) {
 414                 QEDI_ERR(&qedi->dbg_ctx,
 415                          "fastpath fp array allocation failed.\n");
 416                 return -ENOMEM;
 417         }
 418
 419         qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 420                                  sizeof(struct qed_sb_info), GFP_KERNEL);
 421         if (!qedi->sb_array) {
 422                 QEDI_ERR(&qedi->dbg_ctx,
 423                          "fastpath sb array allocation failed.\n");
 424                 ret = -ENOMEM;
 425                 goto free_fp;
 426         }
 427
 428         return ret;
 429
 430 free_fp:
 431         qedi_free_fp(qedi);
 432         return ret;
 433 }
 434
 435 static void qedi_int_fp(struct qedi_ctx *qedi)
 436 {
 437         struct qedi_fastpath *fp;
 438         int id;
 439
 440         memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 441                sizeof(*qedi->fp_array));
 442         memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 443                sizeof(*qedi->sb_array));
 444
 445         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 446                 fp = &qedi->fp_array[id];
 447                 fp->sb_info = &qedi->sb_array[id];
 448                 fp->sb_id = id;
 449                 fp->qedi = qedi;
 450                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
 451                          "qedi", id);
 452
 453                 /* fp_array[i] ---- irq cookie
 454                  * So init data which is needed in int ctx
 455                  */
 456         }
 457 }
 458
 459 static int qedi_prepare_fp(struct qedi_ctx *qedi)
 460 {
 461         struct qedi_fastpath *fp;
 462         int id, ret = 0;
 463
 464         ret = qedi_alloc_fp(qedi);
 465         if (ret)
 466                 goto err;
 467
 468         qedi_int_fp(qedi);
 469
 470         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 471                 fp = &qedi->fp_array[id];
 472                 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
 473                 if (ret) {
 474                         QEDI_ERR(&qedi->dbg_ctx,
 475                                  "SB allocation and initialization failed.\n");
 476                         ret = -EIO;
 477                         goto err_init;
 478                 }
 479         }
 480
 481         return 0;
 482
 483 err_init:
 484         qedi_free_sb(qedi);
 485         qedi_free_fp(qedi);
 486 err:
 487         return ret;
 488 }
 489
 490 static int qedi_setup_cid_que(struct qedi_ctx *qedi)
 491 {
 492         int i;
 493
 494         qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
 495                                                    sizeof(u32), GFP_KERNEL);
 496         if (!qedi->cid_que.cid_que_base)
 497                 return -ENOMEM;
 498
 499         qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
 500                                                    sizeof(struct qedi_conn *),
 501                                                    GFP_KERNEL);
 502         if (!qedi->cid_que.conn_cid_tbl) {
 503                 kfree(qedi->cid_que.cid_que_base);
 504                 qedi->cid_que.cid_que_base = NULL;
 505                 return -ENOMEM;
 506         }
 507
 508         qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
 509         qedi->cid_que.cid_q_prod_idx = 0;
 510         qedi->cid_que.cid_q_cons_idx = 0;
 511         qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
 512         qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
 513
 514         for (i = 0; i < qedi->max_active_conns; i++) {
 515                 qedi->cid_que.cid_que[i] = i;
 516                 qedi->cid_que.conn_cid_tbl[i] = NULL;
 517         }
 518
 519         return 0;
 520 }
 521
 522 static void qedi_release_cid_que(struct qedi_ctx *qedi)
 523 {
 524         kfree(qedi->cid_que.cid_que_base);
 525         qedi->cid_que.cid_que_base = NULL;
 526
 527         kfree(qedi->cid_que.conn_cid_tbl);
 528         qedi->cid_que.conn_cid_tbl = NULL;
 529 }
 530
 531 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
 532                             u16 start_id, u16 next)
 533 {
 534         id_tbl->start = start_id;
 535         id_tbl->max = size;
 536         id_tbl->next = next;
 537         spin_lock_init(&id_tbl->lock);
 538         id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
 539         if (!id_tbl->table)
 540                 return -ENOMEM;
 541
 542         return 0;
 543 }
 544
 545 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
 546 {
 547         kfree(id_tbl->table);
 548         id_tbl->table = NULL;
 549 }
 550
 551 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
 552 {
 553         int ret = -1;
 554
 555         id -= id_tbl->start;
 556         if (id >= id_tbl->max)
 557                 return ret;
 558
 559         spin_lock(&id_tbl->lock);
 560         if (!test_bit(id, id_tbl->table)) {
 561                 set_bit(id, id_tbl->table);
 562                 ret = 0;
 563         }
 564         spin_unlock(&id_tbl->lock);
 565         return ret;
 566 }
 567
 568 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
 569 {
 570         u16 id;
 571
 572         spin_lock(&id_tbl->lock);
 573         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 574         if (id >= id_tbl->max) {
 575                 id = QEDI_LOCAL_PORT_INVALID;
 576                 if (id_tbl->next != 0) {
 577                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 578                         if (id >= id_tbl->next)
 579                                 id = QEDI_LOCAL_PORT_INVALID;
 580                 }
 581         }
 582
 583         if (id < id_tbl->max) {
 584                 set_bit(id, id_tbl->table);
 585                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 586                 id += id_tbl->start;
 587         }
 588
 589         spin_unlock(&id_tbl->lock);
 590
 591         return id;
 592 }
 593
 594 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
 595 {
 596         if (id == QEDI_LOCAL_PORT_INVALID)
 597                 return;
 598
 599         id -= id_tbl->start;
 600         if (id >= id_tbl->max)
 601                 return;
 602
 603         clear_bit(id, id_tbl->table);
 604 }
 605
 606 static void qedi_cm_free_mem(struct qedi_ctx *qedi)
 607 {
 608         kfree(qedi->ep_tbl);
 609         qedi->ep_tbl = NULL;
 610         qedi_free_id_tbl(&qedi->lcl_port_tbl);
 611 }
 612
 613 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
 614 {
 615         u16 port_id;
 616
 617         qedi->ep_tbl = kzalloc((qedi->max_active_conns *
 618                                 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
 619         if (!qedi->ep_tbl)
 620                 return -ENOMEM;
 621         port_id = get_random_u32_below(QEDI_LOCAL_PORT_RANGE);
 622         if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
 623                              QEDI_LOCAL_PORT_MIN, port_id)) {
 624                 qedi_cm_free_mem(qedi);
 625                 return -ENOMEM;
 626         }
 627
 628         return 0;
 629 }
 630
 631 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
 632 {
 633         struct Scsi_Host *shost;
 634         struct qedi_ctx *qedi = NULL;
 635
 636         shost = iscsi_host_alloc(&qedi_host_template,
 637                                  sizeof(struct qedi_ctx), 0);
 638         if (!shost) {
 639                 QEDI_ERR(NULL, "Could not allocate shost\n");
 640                 goto exit_setup_shost;
 641         }
 642
 643         shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1;
 644         shost->max_channel = 0;
 645         shost->max_lun = ~0;
 646         shost->max_cmd_len = 16;
 647         shost->transportt = qedi_scsi_transport;
 648
 649         qedi = iscsi_host_priv(shost);
 650         memset(qedi, 0, sizeof(*qedi));
 651         qedi->shost = shost;
 652         qedi->dbg_ctx.host_no = shost->host_no;
 653         qedi->pdev = pdev;
 654         qedi->dbg_ctx.pdev = pdev;
 655         qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
 656         qedi->max_sqes = QEDI_SQ_SIZE;
 657
 658         shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
 659
 660         pci_set_drvdata(pdev, qedi);
 661
 662 exit_setup_shost:
 663         return qedi;
 664 }
 665
 666 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
 667 {
 668         struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
 669         struct skb_work_list *work;
 670         struct ethhdr *eh;
 671
 672         if (!qedi) {
 673                 QEDI_ERR(NULL, "qedi is NULL\n");
 674                 return -1;
 675         }
 676
 677         if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
 678                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
 679                           "UIO DEV is not opened\n");
 680                 kfree_skb(skb);
 681                 return 0;
 682         }
 683
 684         eh = (struct ethhdr *)skb->data;
 685         /* Undo VLAN encapsulation */
 686         if (eh->h_proto == htons(ETH_P_8021Q)) {
 687                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
 688                 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
 689                 skb_reset_mac_header(skb);
 690         }
 691
 692         /* Filter out non FIP/FCoE frames here to free them faster */
 693         if (eh->h_proto != htons(ETH_P_ARP) &&
 694             eh->h_proto != htons(ETH_P_IP) &&
 695             eh->h_proto != htons(ETH_P_IPV6)) {
 696                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 697                           "Dropping frame ethertype [0x%x] len [0x%x].\n",
 698                           eh->h_proto, skb->len);
 699                 kfree_skb(skb);
 700                 return 0;
 701         }
 702
 703         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 704                   "Allowed frame ethertype [0x%x] len [0x%x].\n",
 705                   eh->h_proto, skb->len);
 706
 707         work = kzalloc(sizeof(*work), GFP_ATOMIC);
 708         if (!work) {
 709                 QEDI_WARN(&qedi->dbg_ctx,
 710                           "Could not allocate work so dropping frame.\n");
 711                 kfree_skb(skb);
 712                 return 0;
 713         }
 714
 715         INIT_LIST_HEAD(&work->list);
 716         work->skb = skb;
 717
 718         if (skb_vlan_tag_present(skb))
 719                 work->vlan_id = skb_vlan_tag_get(skb);
 720
 721         if (work->vlan_id)
 722                 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
 723
 724         spin_lock_bh(&qedi->ll2_lock);
 725         list_add_tail(&work->list, &qedi->ll2_skb_list);
 726         spin_unlock_bh(&qedi->ll2_lock);
 727
 728         wake_up_process(qedi->ll2_recv_thread);
 729
 730         return 0;
 731 }
 732
 733 /* map this skb to iscsiuio mmaped region */
 734 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
 735                                 u16 vlan_id)
 736 {
 737         struct qedi_uio_dev *udev = NULL;
 738         struct qedi_uio_ctrl *uctrl = NULL;
 739         struct qedi_rx_bd rxbd;
 740         struct qedi_rx_bd *p_rxbd;
 741         u32 rx_bd_prod;
 742         void *pkt;
 743         int len = 0;
 744         u32 prod;
 745
 746         if (!qedi) {
 747                 QEDI_ERR(NULL, "qedi is NULL\n");
 748                 return -1;
 749         }
 750
 751         udev = qedi->udev;
 752         uctrl = udev->uctrl;
 753
 754         ++uctrl->hw_rx_prod_cnt;
 755         prod = (uctrl->hw_rx_prod + 1) % RX_RING;
 756
 757         pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
 758         len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
 759         memcpy(pkt, skb->data, len);
 760
 761         memset(&rxbd, 0, sizeof(rxbd));
 762         rxbd.rx_pkt_index = prod;
 763         rxbd.rx_pkt_len = len;
 764         rxbd.vlan_id = vlan_id;
 765
 766         uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
 767         rx_bd_prod = uctrl->hw_rx_bd_prod;
 768         p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
 769         p_rxbd += rx_bd_prod;
 770
 771         memcpy(p_rxbd, &rxbd, sizeof(rxbd));
 772
 773         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 774                   "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
 775                   uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
 776                   rxbd.rx_pkt_index, rxbd.rx_pkt_len);
 777         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 778                   "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
 779                   uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
 780
 781         uctrl->hw_rx_prod = prod;
 782
 783         /* notify the iscsiuio about new packet */
 784         uio_event_notify(&udev->qedi_uinfo);
 785
 786         return 0;
 787 }
 788
 789 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
 790 {
 791         struct skb_work_list *work, *work_tmp;
 792
 793         spin_lock_bh(&qedi->ll2_lock);
 794         list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
 795                 list_del(&work->list);
 796                 kfree_skb(work->skb);
 797                 kfree(work);
 798         }
 799         spin_unlock_bh(&qedi->ll2_lock);
 800 }
 801
 802 static int qedi_ll2_recv_thread(void *arg)
 803 {
 804         struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
 805         struct skb_work_list *work, *work_tmp;
 806
 807         set_user_nice(current, -20);
 808
 809         while (!kthread_should_stop()) {
 810                 spin_lock_bh(&qedi->ll2_lock);
 811                 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
 812                                          list) {
 813                         list_del(&work->list);
 814                         qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
 815                         kfree_skb(work->skb);
 816                         kfree(work);
 817                 }
 818                 set_current_state(TASK_INTERRUPTIBLE);
 819                 spin_unlock_bh(&qedi->ll2_lock);
 820                 schedule();
 821         }
 822
 823         __set_current_state(TASK_RUNNING);
 824         return 0;
 825 }
 826
 827 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
 828 {
 829         u8 num_sq_pages;
 830         u32 log_page_size;
 831         int rval = 0;
 832
 833
 834         num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
 835
 836         qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
 837
 838         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
 839                   "Number of CQ count is %d\n", qedi->num_queues);
 840
 841         memset(&qedi->pf_params.iscsi_pf_params, 0,
 842                sizeof(qedi->pf_params.iscsi_pf_params));
 843
 844         qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
 845                         qedi->num_queues * sizeof(struct qedi_glbl_q_params),
 846                         &qedi->hw_p_cpuq, GFP_KERNEL);
 847         if (!qedi->p_cpuq) {
 848                 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
 849                 rval = -1;
 850                 goto err_alloc_mem;
 851         }
 852
 853         rval = qedi_alloc_global_queues(qedi);
 854         if (rval) {
 855                 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
 856                 rval = -1;
 857                 goto err_alloc_mem;
 858         }
 859
 860         qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
 861         qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
 862         qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
 863         qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
 864         qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
 865         qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
 866         qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
 867         qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
 868         qedi->pf_params.iscsi_pf_params.two_msl_timer = QED_TWO_MSL_TIMER_DFLT;
 869         qedi->pf_params.iscsi_pf_params.tx_sws_timer = QED_TX_SWS_TIMER_DFLT;
 870         qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
 871
 872         for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
 873                 if ((1 << log_page_size) == QEDI_PAGE_SIZE)
 874                         break;
 875         }
 876         qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
 877
 878         qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
 879                                                            (u64)qedi->hw_p_cpuq;
 880
 881         /* RQ BDQ initializations.
 882          * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
 883          * rqe_log_size: 8 for 256B RQE
 884          */
 885         qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
 886         /* BDQ address and size */
 887         qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
 888                                                         qedi->bdq_pbl_list_dma;
 889         qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
 890                                                 qedi->bdq_pbl_list_num_entries;
 891         qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
 892
 893         /* cq_num_entries: num_tasks + rq_num_entries */
 894         qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
 895
 896         qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
 897         qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
 898
 899 err_alloc_mem:
 900         return rval;
 901 }
 902
 903 /* Free DMA coherent memory for array of queue pointers we pass to qed */
 904 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
 905 {
 906         size_t size = 0;
 907
 908         if (qedi->p_cpuq) {
 909                 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
 910                 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
 911                                     qedi->hw_p_cpuq);
 912         }
 913
 914         qedi_free_global_queues(qedi);
 915
 916         kfree(qedi->global_queues);
 917 }
 918
 919 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
 920                                    struct qedi_boot_target *tgt, u8 index)
 921 {
 922         u32 ipv6_en;
 923
 924         ipv6_en = !!(block->generic.ctrl_flags &
 925                      NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
 926
 927         snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s",
 928                  block->target[index].target_name.byte);
 929
 930         tgt->ipv6_en = ipv6_en;
 931
 932         if (ipv6_en)
 933                 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
 934                          block->target[index].ipv6_addr.byte);
 935         else
 936                 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
 937                          block->target[index].ipv4_addr.byte);
 938 }
 939
 940 static int qedi_find_boot_info(struct qedi_ctx *qedi,
 941                                struct qed_mfw_tlv_iscsi *iscsi,
 942                                struct nvm_iscsi_block *block)
 943 {
 944         struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
 945         u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
 946         struct iscsi_cls_session *cls_sess;
 947         struct iscsi_cls_conn *cls_conn;
 948         struct qedi_conn *qedi_conn;
 949         struct iscsi_session *sess;
 950         struct iscsi_conn *conn;
 951         char ep_ip_addr[64];
 952         int i, ret = 0;
 953
 954         pri_ctrl_flags = !!(block->target[0].ctrl_flags &
 955                                         NVM_ISCSI_CFG_TARGET_ENABLED);
 956         if (pri_ctrl_flags) {
 957                 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
 958                 if (!pri_tgt)
 959                         return -1;
 960                 qedi_get_boot_tgt_info(block, pri_tgt, 0);
 961         }
 962
 963         sec_ctrl_flags = !!(block->target[1].ctrl_flags &
 964                                         NVM_ISCSI_CFG_TARGET_ENABLED);
 965         if (sec_ctrl_flags) {
 966                 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
 967                 if (!sec_tgt) {
 968                         ret = -1;
 969                         goto free_tgt;
 970                 }
 971                 qedi_get_boot_tgt_info(block, sec_tgt, 1);
 972         }
 973
 974         for (i = 0; i < qedi->max_active_conns; i++) {
 975                 qedi_conn = qedi_get_conn_from_id(qedi, i);
 976                 if (!qedi_conn)
 977                         continue;
 978
 979                 if (qedi_conn->ep->ip_type == TCP_IPV4)
 980                         snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
 981                                  qedi_conn->ep->dst_addr);
 982                 else
 983                         snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
 984                                  qedi_conn->ep->dst_addr);
 985
 986                 cls_conn = qedi_conn->cls_conn;
 987                 conn = cls_conn->dd_data;
 988                 cls_sess = iscsi_conn_to_session(cls_conn);
 989                 sess = cls_sess->dd_data;
 990
 991                 if (!iscsi_is_session_online(cls_sess))
 992                         continue;
 993
 994                 if (!sess->targetname)
 995                         continue;
 996
 997                 if (pri_ctrl_flags) {
 998                         if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
 999                             !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
1000                                 found = 1;
1001                                 break;
1002                         }
1003                 }
1004
1005                 if (sec_ctrl_flags) {
1006                         if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1007                             !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1008                                 found = 1;
1009                                 break;
1010                         }
1011                 }
1012         }
1013
1014         if (found) {
1015                 if (conn->hdrdgst_en) {
1016                         iscsi->header_digest_set = true;
1017                         iscsi->header_digest = 1;
1018                 }
1019
1020                 if (conn->datadgst_en) {
1021                         iscsi->data_digest_set = true;
1022                         iscsi->data_digest = 1;
1023                 }
1024                 iscsi->boot_taget_portal_set = true;
1025                 iscsi->boot_taget_portal = sess->tpgt;
1026
1027         } else {
1028                 ret = -1;
1029         }
1030
1031         if (sec_ctrl_flags)
1032                 kfree(sec_tgt);
1033 free_tgt:
1034         if (pri_ctrl_flags)
1035                 kfree(pri_tgt);
1036
1037         return ret;
1038 }
1039
1040 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1041 {
1042         struct qedi_ctx *qedi;
1043
1044         if (!dev) {
1045                 QEDI_INFO(NULL, QEDI_LOG_EVT,
1046                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
1047                 return;
1048         }
1049         qedi = (struct qedi_ctx *)dev;
1050
1051         memset(data, 0, sizeof(struct qed_generic_tlvs));
1052         ether_addr_copy(data->mac[0], qedi->mac);
1053 }
1054
1055 /*
1056  * Protocol TLV handler
1057  */
1058 static void qedi_get_protocol_tlv_data(void *dev, void *data)
1059 {
1060         struct qed_mfw_tlv_iscsi *iscsi = data;
1061         struct qed_iscsi_stats *fw_iscsi_stats;
1062         struct nvm_iscsi_block *block = NULL;
1063         u32 chap_en = 0, mchap_en = 0;
1064         struct qedi_ctx *qedi = dev;
1065         int rval = 0;
1066
1067         fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1068         if (!fw_iscsi_stats) {
1069                 QEDI_ERR(&qedi->dbg_ctx,
1070                          "Could not allocate memory for fw_iscsi_stats.\n");
1071                 goto exit_get_data;
1072         }
1073
1074         mutex_lock(&qedi->stats_lock);
1075         /* Query firmware for offload stats */
1076         qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1077         mutex_unlock(&qedi->stats_lock);
1078
1079         iscsi->rx_frames_set = true;
1080         iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1081         iscsi->rx_bytes_set = true;
1082         iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1083         iscsi->tx_frames_set = true;
1084         iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1085         iscsi->tx_bytes_set = true;
1086         iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1087         iscsi->frame_size_set = true;
1088         iscsi->frame_size = qedi->ll2_mtu;
1089         block = qedi_get_nvram_block(qedi);
1090         if (block) {
1091                 chap_en = !!(block->generic.ctrl_flags &
1092                              NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1093                 mchap_en = !!(block->generic.ctrl_flags &
1094                               NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1095
1096                 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1097                 iscsi->auth_method = 1;
1098                 if (chap_en)
1099                         iscsi->auth_method = 2;
1100                 if (mchap_en)
1101                         iscsi->auth_method = 3;
1102
1103                 iscsi->tx_desc_size_set = true;
1104                 iscsi->tx_desc_size = QEDI_SQ_SIZE;
1105                 iscsi->rx_desc_size_set = true;
1106                 iscsi->rx_desc_size = QEDI_CQ_SIZE;
1107
1108                 /* tpgt, hdr digest, data digest */
1109                 rval = qedi_find_boot_info(qedi, iscsi, block);
1110                 if (rval)
1111                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1112                                   "Boot target not set");
1113         }
1114
1115         kfree(fw_iscsi_stats);
1116 exit_get_data:
1117         return;
1118 }
1119
1120 void qedi_schedule_hw_err_handler(void *dev,
1121                                   enum qed_hw_err_type err_type)
1122 {
1123         struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1124         unsigned long override_flags = qedi_flags_override;
1125
1126         if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags))
1127                 qedi->qedi_err_flags = qedi_flags_override;
1128
1129         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1130                   "HW error handler scheduled, err=%d err_flags=0x%x\n",
1131                   err_type, qedi->qedi_err_flags);
1132
1133         switch (err_type) {
1134         case QED_HW_ERR_FAN_FAIL:
1135                 schedule_delayed_work(&qedi->board_disable_work, 0);
1136                 break;
1137         case QED_HW_ERR_MFW_RESP_FAIL:
1138         case QED_HW_ERR_HW_ATTN:
1139         case QED_HW_ERR_DMAE_FAIL:
1140         case QED_HW_ERR_RAMROD_FAIL:
1141         case QED_HW_ERR_FW_ASSERT:
1142                 /* Prevent HW attentions from being reasserted */
1143                 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags))
1144                         qedi_ops->common->attn_clr_enable(qedi->cdev, true);
1145
1146                 if (err_type == QED_HW_ERR_RAMROD_FAIL &&
1147                     test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags))
1148                         qedi_ops->common->recovery_process(qedi->cdev);
1149
1150                 break;
1151         default:
1152                 break;
1153         }
1154 }
1155
1156 static void qedi_schedule_recovery_handler(void *dev)
1157 {
1158         struct qedi_ctx *qedi = dev;
1159
1160         QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n");
1161
1162         if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags))
1163                 return;
1164
1165         atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1166
1167         schedule_delayed_work(&qedi->recovery_work, 0);
1168 }
1169
1170 static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session)
1171 {
1172         struct iscsi_session *session = cls_session->dd_data;
1173         struct iscsi_conn *conn = session->leadconn;
1174         struct qedi_conn *qedi_conn = conn->dd_data;
1175
1176         qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1177 }
1178
1179 static void qedi_link_update(void *dev, struct qed_link_output *link)
1180 {
1181         struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1182
1183         if (link->link_up) {
1184                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1185                 atomic_set(&qedi->link_state, QEDI_LINK_UP);
1186         } else {
1187                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1188                           "Link Down event.\n");
1189                 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1190                 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery);
1191         }
1192 }
1193
1194 static struct qed_iscsi_cb_ops qedi_cb_ops = {
1195         {
1196                 .link_update =          qedi_link_update,
1197                 .schedule_recovery_handler = qedi_schedule_recovery_handler,
1198                 .schedule_hw_err_handler = qedi_schedule_hw_err_handler,
1199                 .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
1200                 .get_generic_tlv_data = qedi_get_generic_tlv_data,
1201         }
1202 };
1203
1204 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1205                           u16 que_idx, struct qedi_percpu_s *p)
1206 {
1207         struct qedi_work *qedi_work;
1208         struct qedi_conn *q_conn;
1209         struct qedi_cmd *qedi_cmd;
1210         u32 iscsi_cid;
1211         int rc = 0;
1212
1213         iscsi_cid  = cqe->cqe_common.conn_id;
1214         q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1215         if (!q_conn) {
1216                 QEDI_WARN(&qedi->dbg_ctx,
1217                           "Session no longer exists for cid=0x%x!!\n",
1218                           iscsi_cid);
1219                 return -1;
1220         }
1221
1222         switch (cqe->cqe_common.cqe_type) {
1223         case ISCSI_CQE_TYPE_SOLICITED:
1224         case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1225                 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1226                 if (!qedi_cmd) {
1227                         rc = -1;
1228                         break;
1229                 }
1230                 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1231                 qedi_cmd->cqe_work.qedi = qedi;
1232                 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1233                 qedi_cmd->cqe_work.que_idx = que_idx;
1234                 qedi_cmd->cqe_work.is_solicited = true;
1235                 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1236                 break;
1237         case ISCSI_CQE_TYPE_UNSOLICITED:
1238         case ISCSI_CQE_TYPE_DUMMY:
1239         case ISCSI_CQE_TYPE_TASK_CLEANUP:
1240                 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1241                 if (!qedi_work) {
1242                         rc = -1;
1243                         break;
1244                 }
1245                 INIT_LIST_HEAD(&qedi_work->list);
1246                 qedi_work->qedi = qedi;
1247                 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1248                 qedi_work->que_idx = que_idx;
1249                 qedi_work->is_solicited = false;
1250                 list_add_tail(&qedi_work->list, &p->work_list);
1251                 break;
1252         default:
1253                 rc = -1;
1254                 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1255         }
1256         return rc;
1257 }
1258
1259 static bool qedi_process_completions(struct qedi_fastpath *fp)
1260 {
1261         struct qedi_ctx *qedi = fp->qedi;
1262         struct qed_sb_info *sb_info = fp->sb_info;
1263         struct status_block *sb = sb_info->sb_virt;
1264         struct qedi_percpu_s *p = NULL;
1265         struct global_queue *que;
1266         u16 prod_idx;
1267         unsigned long flags;
1268         union iscsi_cqe *cqe;
1269         int cpu;
1270         int ret;
1271
1272         /* Get the current firmware producer index */
1273         prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1274
1275         if (prod_idx >= QEDI_CQ_SIZE)
1276                 prod_idx = prod_idx % QEDI_CQ_SIZE;
1277
1278         que = qedi->global_queues[fp->sb_id];
1279         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1280                   "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1281                   que, prod_idx, que->cq_cons_idx, fp->sb_id);
1282
1283         qedi->intr_cpu = fp->sb_id;
1284         cpu = smp_processor_id();
1285         p = &per_cpu(qedi_percpu, cpu);
1286
1287         if (unlikely(!p->iothread))
1288                 WARN_ON(1);
1289
1290         spin_lock_irqsave(&p->p_work_lock, flags);
1291         while (que->cq_cons_idx != prod_idx) {
1292                 cqe = &que->cq[que->cq_cons_idx];
1293
1294                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1295                           "cqe=%p prod_idx=%d cons_idx=%d.\n",
1296                           cqe, prod_idx, que->cq_cons_idx);
1297
1298                 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1299                 if (ret)
1300                         QEDI_WARN(&qedi->dbg_ctx,
1301                                   "Dropping CQE 0x%x for cid=0x%x.\n",
1302                                   que->cq_cons_idx, cqe->cqe_common.conn_id);
1303
1304                 que->cq_cons_idx++;
1305                 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1306                         que->cq_cons_idx = 0;
1307         }
1308         wake_up_process(p->iothread);
1309         spin_unlock_irqrestore(&p->p_work_lock, flags);
1310
1311         return true;
1312 }
1313
1314 static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1315 {
1316         struct qedi_ctx *qedi = fp->qedi;
1317         struct global_queue *que;
1318         struct qed_sb_info *sb_info = fp->sb_info;
1319         struct status_block *sb = sb_info->sb_virt;
1320         u16 prod_idx;
1321
1322         barrier();
1323
1324         /* Get the current firmware producer index */
1325         prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1326
1327         /* Get the pointer to the global CQ this completion is on */
1328         que = qedi->global_queues[fp->sb_id];
1329
1330         /* prod idx wrap around uint16 */
1331         if (prod_idx >= QEDI_CQ_SIZE)
1332                 prod_idx = prod_idx % QEDI_CQ_SIZE;
1333
1334         return (que->cq_cons_idx != prod_idx);
1335 }
1336
1337 /* MSI-X fastpath handler code */
1338 static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1339 {
1340         struct qedi_fastpath *fp = dev_id;
1341         struct qedi_ctx *qedi = fp->qedi;
1342         bool wake_io_thread = true;
1343
1344         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1345
1346 process_again:
1347         wake_io_thread = qedi_process_completions(fp);
1348         if (wake_io_thread) {
1349                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1350                           "process already running\n");
1351         }
1352
1353         if (!qedi_fp_has_work(fp))
1354                 qed_sb_update_sb_idx(fp->sb_info);
1355
1356         /* Check for more work */
1357         rmb();
1358
1359         if (!qedi_fp_has_work(fp))
1360                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1361         else
1362                 goto process_again;
1363
1364         return IRQ_HANDLED;
1365 }
1366
1367 /* simd handler for MSI/INTa */
1368 static void qedi_simd_int_handler(void *cookie)
1369 {
1370         /* Cookie is qedi_ctx struct */
1371         struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1372
1373         QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1374 }
1375
1376 #define QEDI_SIMD_HANDLER_NUM           0
1377 static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1378 {
1379         int i;
1380         u16 idx;
1381
1382         if (qedi->int_info.msix_cnt) {
1383                 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1384                         idx = i * qedi->dev_info.common.num_hwfns +
1385                         qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1386
1387                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1388                                   "Freeing IRQ #%d vector_idx=%d.\n", i, idx);
1389
1390                         synchronize_irq(qedi->int_info.msix[idx].vector);
1391                         irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1392                                               NULL);
1393                         free_irq(qedi->int_info.msix[idx].vector,
1394                                  &qedi->fp_array[i]);
1395                 }
1396         } else {
1397                 qedi_ops->common->simd_handler_clean(qedi->cdev,
1398                                                      QEDI_SIMD_HANDLER_NUM);
1399         }
1400
1401         qedi->int_info.used_cnt = 0;
1402         qedi_ops->common->set_fp_int(qedi->cdev, 0);
1403 }
1404
1405 static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1406 {
1407         int i, rc, cpu;
1408         u16 idx;
1409
1410         cpu = cpumask_first(cpu_online_mask);
1411         for (i = 0; i < qedi->msix_count; i++) {
1412                 idx = i * qedi->dev_info.common.num_hwfns +
1413                           qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1414
1415                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1416                           "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
1417                           qedi->dev_info.common.num_hwfns,
1418                           qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
1419
1420                 rc = request_irq(qedi->int_info.msix[idx].vector,
1421                                  qedi_msix_handler, 0, "qedi",
1422                                  &qedi->fp_array[i]);
1423                 if (rc) {
1424                         QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1425                         qedi_sync_free_irqs(qedi);
1426                         return rc;
1427                 }
1428                 qedi->int_info.used_cnt++;
1429                 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1430                                            get_cpu_mask(cpu));
1431                 cpu = cpumask_next(cpu, cpu_online_mask);
1432         }
1433
1434         return 0;
1435 }
1436
1437 static int qedi_setup_int(struct qedi_ctx *qedi)
1438 {
1439         int rc = 0;
1440
1441         rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues);
1442         if (rc < 0)
1443                 goto exit_setup_int;
1444
1445         qedi->msix_count = rc;
1446
1447         rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1448         if (rc)
1449                 goto exit_setup_int;
1450
1451         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1452                   "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1453                    qedi->int_info.msix_cnt, num_online_cpus());
1454
1455         if (qedi->int_info.msix_cnt) {
1456                 rc = qedi_request_msix_irq(qedi);
1457                 goto exit_setup_int;
1458         } else {
1459                 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1460                                                       QEDI_SIMD_HANDLER_NUM,
1461                                                       qedi_simd_int_handler);
1462                 qedi->int_info.used_cnt = 1;
1463         }
1464
1465 exit_setup_int:
1466         return rc;
1467 }
1468
1469 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1470 {
1471         if (qedi->iscsi_image)
1472                 dma_free_coherent(&qedi->pdev->dev,
1473                                   sizeof(struct qedi_nvm_iscsi_image),
1474                                   qedi->iscsi_image, qedi->nvm_buf_dma);
1475 }
1476
1477 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1478 {
1479         qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1480                                                sizeof(struct qedi_nvm_iscsi_image),
1481                                                &qedi->nvm_buf_dma, GFP_KERNEL);
1482         if (!qedi->iscsi_image) {
1483                 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1484                 return -ENOMEM;
1485         }
1486         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1487                   "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1488                   qedi->nvm_buf_dma);
1489
1490         return 0;
1491 }
1492
1493 static void qedi_free_bdq(struct qedi_ctx *qedi)
1494 {
1495         int i;
1496
1497         if (qedi->bdq_pbl_list)
1498                 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
1499                                   qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1500
1501         if (qedi->bdq_pbl)
1502                 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1503                                   qedi->bdq_pbl, qedi->bdq_pbl_dma);
1504
1505         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1506                 if (qedi->bdq[i].buf_addr) {
1507                         dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1508                                           qedi->bdq[i].buf_addr,
1509                                           qedi->bdq[i].buf_dma);
1510                 }
1511         }
1512 }
1513
1514 static void qedi_free_global_queues(struct qedi_ctx *qedi)
1515 {
1516         int i;
1517         struct global_queue **gl = qedi->global_queues;
1518
1519         for (i = 0; i < qedi->num_queues; i++) {
1520                 if (!gl[i])
1521                         continue;
1522
1523                 if (gl[i]->cq)
1524                         dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1525                                           gl[i]->cq, gl[i]->cq_dma);
1526                 if (gl[i]->cq_pbl)
1527                         dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1528                                           gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1529
1530                 kfree(gl[i]);
1531         }
1532         qedi_free_bdq(qedi);
1533         qedi_free_nvm_iscsi_cfg(qedi);
1534 }
1535
1536 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1537 {
1538         int i;
1539         struct scsi_bd *pbl;
1540         u64 *list;
1541
1542         /* Alloc dma memory for BDQ buffers */
1543         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1544                 qedi->bdq[i].buf_addr =
1545                                 dma_alloc_coherent(&qedi->pdev->dev,
1546                                                    QEDI_BDQ_BUF_SIZE,
1547                                                    &qedi->bdq[i].buf_dma,
1548                                                    GFP_KERNEL);
1549                 if (!qedi->bdq[i].buf_addr) {
1550                         QEDI_ERR(&qedi->dbg_ctx,
1551                                  "Could not allocate BDQ buffer %d.\n", i);
1552                         return -ENOMEM;
1553                 }
1554         }
1555
1556         /* Alloc dma memory for BDQ page buffer list */
1557         qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1558         qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
1559         qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1560
1561         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1562                   qedi->rq_num_entries);
1563
1564         qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1565                                            qedi->bdq_pbl_mem_size,
1566                                            &qedi->bdq_pbl_dma, GFP_KERNEL);
1567         if (!qedi->bdq_pbl) {
1568                 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1569                 return -ENOMEM;
1570         }
1571
1572         /*
1573          * Populate BDQ PBL with physical and virtual address of individual
1574          * BDQ buffers
1575          */
1576         pbl = (struct scsi_bd  *)qedi->bdq_pbl;
1577         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1578                 pbl->address.hi =
1579                                 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1580                 pbl->address.lo =
1581                                 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1582                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1583                           "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1584                           pbl, pbl->address.hi, pbl->address.lo, i);
1585                 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1586                 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1587                 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1588                 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
1589                 pbl++;
1590         }
1591
1592         /* Allocate list of PBL pages */
1593         qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1594                                                 QEDI_PAGE_SIZE,
1595                                                 &qedi->bdq_pbl_list_dma,
1596                                                 GFP_KERNEL);
1597         if (!qedi->bdq_pbl_list) {
1598                 QEDI_ERR(&qedi->dbg_ctx,
1599                          "Could not allocate list of PBL pages.\n");
1600                 return -ENOMEM;
1601         }
1602
1603         /*
1604          * Now populate PBL list with pages that contain pointers to the
1605          * individual buffers.
1606          */
1607         qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
1608                                          QEDI_PAGE_SIZE;
1609         list = (u64 *)qedi->bdq_pbl_list;
1610         for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1611                 *list = qedi->bdq_pbl_dma;
1612                 list++;
1613         }
1614
1615         return 0;
1616 }
1617
1618 static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1619 {
1620         u32 *list;
1621         int i;
1622         int status;
1623         u32 *pbl;
1624         dma_addr_t page;
1625         int num_pages;
1626
1627         /*
1628          * Number of global queues (CQ / RQ). This should
1629          * be <= number of available MSIX vectors for the PF
1630          */
1631         if (!qedi->num_queues) {
1632                 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1633                 return -ENOMEM;
1634         }
1635
1636         /* Make sure we allocated the PBL that will contain the physical
1637          * addresses of our queues
1638          */
1639         if (!qedi->p_cpuq) {
1640                 status = -EINVAL;
1641                 goto mem_alloc_failure;
1642         }
1643
1644         qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1645                                        qedi->num_queues), GFP_KERNEL);
1646         if (!qedi->global_queues) {
1647                 QEDI_ERR(&qedi->dbg_ctx,
1648                          "Unable to allocate global queues array ptr memory\n");
1649                 return -ENOMEM;
1650         }
1651         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1652                   "qedi->global_queues=%p.\n", qedi->global_queues);
1653
1654         /* Allocate DMA coherent buffers for BDQ */
1655         status = qedi_alloc_bdq(qedi);
1656         if (status)
1657                 goto mem_alloc_failure;
1658
1659         /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1660         status = qedi_alloc_nvm_iscsi_cfg(qedi);
1661         if (status)
1662                 goto mem_alloc_failure;
1663
1664         /* Allocate a CQ and an associated PBL for each MSI-X
1665          * vector.
1666          */
1667         for (i = 0; i < qedi->num_queues; i++) {
1668                 qedi->global_queues[i] =
1669                                         kzalloc(sizeof(*qedi->global_queues[0]),
1670                                                 GFP_KERNEL);
1671                 if (!qedi->global_queues[i]) {
1672                         QEDI_ERR(&qedi->dbg_ctx,
1673                                  "Unable to allocation global queue %d.\n", i);
1674                         status = -ENOMEM;
1675                         goto mem_alloc_failure;
1676                 }
1677
1678                 qedi->global_queues[i]->cq_mem_size =
1679                     (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1680                 qedi->global_queues[i]->cq_mem_size =
1681                     (qedi->global_queues[i]->cq_mem_size +
1682                     (QEDI_PAGE_SIZE - 1));
1683
1684                 qedi->global_queues[i]->cq_pbl_size =
1685                     (qedi->global_queues[i]->cq_mem_size /
1686                     QEDI_PAGE_SIZE) * sizeof(void *);
1687                 qedi->global_queues[i]->cq_pbl_size =
1688                     (qedi->global_queues[i]->cq_pbl_size +
1689                     (QEDI_PAGE_SIZE - 1));
1690
1691                 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1692                                                                 qedi->global_queues[i]->cq_mem_size,
1693                                                                 &qedi->global_queues[i]->cq_dma,
1694                                                                 GFP_KERNEL);
1695
1696                 if (!qedi->global_queues[i]->cq) {
1697                         QEDI_WARN(&qedi->dbg_ctx,
1698                                   "Could not allocate cq.\n");
1699                         status = -ENOMEM;
1700                         goto mem_alloc_failure;
1701                 }
1702                 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1703                                                                     qedi->global_queues[i]->cq_pbl_size,
1704                                                                     &qedi->global_queues[i]->cq_pbl_dma,
1705                                                                     GFP_KERNEL);
1706
1707                 if (!qedi->global_queues[i]->cq_pbl) {
1708                         QEDI_WARN(&qedi->dbg_ctx,
1709                                   "Could not allocate cq PBL.\n");
1710                         status = -ENOMEM;
1711                         goto mem_alloc_failure;
1712                 }
1713
1714                 /* Create PBL */
1715                 num_pages = qedi->global_queues[i]->cq_mem_size /
1716                     QEDI_PAGE_SIZE;
1717                 page = qedi->global_queues[i]->cq_dma;
1718                 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1719
1720                 while (num_pages--) {
1721                         *pbl = (u32)page;
1722                         pbl++;
1723                         *pbl = (u32)((u64)page >> 32);
1724                         pbl++;
1725                         page += QEDI_PAGE_SIZE;
1726                 }
1727         }
1728
1729         list = (u32 *)qedi->p_cpuq;
1730
1731         /*
1732          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1733          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
1734          * to the physical address which contains an array of pointers to the
1735          * physical addresses of the specific queue pages.
1736          */
1737         for (i = 0; i < qedi->num_queues; i++) {
1738                 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1739                 list++;
1740                 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1741                 list++;
1742
1743                 *list = (u32)0;
1744                 list++;
1745                 *list = (u32)((u64)0 >> 32);
1746                 list++;
1747         }
1748
1749         return 0;
1750
1751 mem_alloc_failure:
1752         qedi_free_global_queues(qedi);
1753         return status;
1754 }
1755
1756 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1757 {
1758         int rval = 0;
1759         u32 *pbl;
1760         dma_addr_t page;
1761         int num_pages;
1762
1763         if (!ep)
1764                 return -EIO;
1765
1766         /* Calculate appropriate queue and PBL sizes */
1767         ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1768         ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1769
1770         ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1771         ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1772
1773         ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1774                                     &ep->sq_dma, GFP_KERNEL);
1775         if (!ep->sq) {
1776                 QEDI_WARN(&qedi->dbg_ctx,
1777                           "Could not allocate send queue.\n");
1778                 rval = -ENOMEM;
1779                 goto out;
1780         }
1781         ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1782                                         &ep->sq_pbl_dma, GFP_KERNEL);
1783         if (!ep->sq_pbl) {
1784                 QEDI_WARN(&qedi->dbg_ctx,
1785                           "Could not allocate send queue PBL.\n");
1786                 rval = -ENOMEM;
1787                 goto out_free_sq;
1788         }
1789
1790         /* Create PBL */
1791         num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1792         page = ep->sq_dma;
1793         pbl = (u32 *)ep->sq_pbl;
1794
1795         while (num_pages--) {
1796                 *pbl = (u32)page;
1797                 pbl++;
1798                 *pbl = (u32)((u64)page >> 32);
1799                 pbl++;
1800                 page += QEDI_PAGE_SIZE;
1801         }
1802
1803         return rval;
1804
1805 out_free_sq:
1806         dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1807                           ep->sq_dma);
1808 out:
1809         return rval;
1810 }
1811
1812 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1813 {
1814         if (ep->sq_pbl)
1815                 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1816                                   ep->sq_pbl_dma);
1817         if (ep->sq)
1818                 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1819                                   ep->sq_dma);
1820 }
1821
1822 int qedi_get_task_idx(struct qedi_ctx *qedi)
1823 {
1824         s16 tmp_idx;
1825
1826 again:
1827         tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1828                                       MAX_ISCSI_TASK_ENTRIES);
1829
1830         if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1831                 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1832                 tmp_idx = -1;
1833                 goto err_idx;
1834         }
1835
1836         if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1837                 goto again;
1838
1839 err_idx:
1840         return tmp_idx;
1841 }
1842
1843 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1844 {
1845         if (!test_and_clear_bit(idx, qedi->task_idx_map))
1846                 QEDI_ERR(&qedi->dbg_ctx,
1847                          "FW task context, already cleared, tid=0x%x\n", idx);
1848 }
1849
1850 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1851                          struct qedi_cmd *cmd)
1852 {
1853         qedi->itt_map[tid].itt = proto_itt;
1854         qedi->itt_map[tid].p_cmd = cmd;
1855
1856         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1857                   "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1858                   qedi->itt_map[tid].itt);
1859 }
1860
1861 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1862 {
1863         u16 i;
1864
1865         for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1866                 if (qedi->itt_map[i].itt == itt) {
1867                         *tid = i;
1868                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1869                                   "Ref itt=0x%x, found at tid=0x%x\n",
1870                                   itt, *tid);
1871                         return;
1872                 }
1873         }
1874
1875         WARN_ON(1);
1876 }
1877
1878 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1879 {
1880         *proto_itt = qedi->itt_map[tid].itt;
1881         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1882                   "Get itt map tid [0x%x with proto itt[0x%x]",
1883                   tid, *proto_itt);
1884 }
1885
1886 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1887 {
1888         struct qedi_cmd *cmd = NULL;
1889
1890         if (tid >= MAX_ISCSI_TASK_ENTRIES)
1891                 return NULL;
1892
1893         cmd = qedi->itt_map[tid].p_cmd;
1894         if (cmd->task_id != tid)
1895                 return NULL;
1896
1897         qedi->itt_map[tid].p_cmd = NULL;
1898
1899         return cmd;
1900 }
1901
1902 static int qedi_alloc_itt(struct qedi_ctx *qedi)
1903 {
1904         qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1905                                 sizeof(struct qedi_itt_map), GFP_KERNEL);
1906         if (!qedi->itt_map) {
1907                 QEDI_ERR(&qedi->dbg_ctx,
1908                          "Unable to allocate itt map array memory\n");
1909                 return -ENOMEM;
1910         }
1911         return 0;
1912 }
1913
1914 static void qedi_free_itt(struct qedi_ctx *qedi)
1915 {
1916         kfree(qedi->itt_map);
1917 }
1918
1919 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1920         .rx_cb = qedi_ll2_rx,
1921         .tx_cb = NULL,
1922 };
1923
1924 static int qedi_percpu_io_thread(void *arg)
1925 {
1926         struct qedi_percpu_s *p = arg;
1927         struct qedi_work *work, *tmp;
1928         unsigned long flags;
1929         LIST_HEAD(work_list);
1930
1931         set_user_nice(current, -20);
1932
1933         while (!kthread_should_stop()) {
1934                 spin_lock_irqsave(&p->p_work_lock, flags);
1935                 while (!list_empty(&p->work_list)) {
1936                         list_splice_init(&p->work_list, &work_list);
1937                         spin_unlock_irqrestore(&p->p_work_lock, flags);
1938
1939                         list_for_each_entry_safe(work, tmp, &work_list, list) {
1940                                 list_del_init(&work->list);
1941                                 qedi_fp_process_cqes(work);
1942                                 if (!work->is_solicited)
1943                                         kfree(work);
1944                         }
1945                         cond_resched();
1946                         spin_lock_irqsave(&p->p_work_lock, flags);
1947                 }
1948                 set_current_state(TASK_INTERRUPTIBLE);
1949                 spin_unlock_irqrestore(&p->p_work_lock, flags);
1950                 schedule();
1951         }
1952         __set_current_state(TASK_RUNNING);
1953
1954         return 0;
1955 }
1956
1957 static int qedi_cpu_online(unsigned int cpu)
1958 {
1959         struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1960         struct task_struct *thread;
1961
1962         thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1963                                         cpu_to_node(cpu),
1964                                         "qedi_thread/%d", cpu);
1965         if (IS_ERR(thread))
1966                 return PTR_ERR(thread);
1967
1968         kthread_bind(thread, cpu);
1969         p->iothread = thread;
1970         wake_up_process(thread);
1971         return 0;
1972 }
1973
1974 static int qedi_cpu_offline(unsigned int cpu)
1975 {
1976         struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1977         struct qedi_work *work, *tmp;
1978         struct task_struct *thread;
1979
1980         spin_lock_bh(&p->p_work_lock);
1981         thread = p->iothread;
1982         p->iothread = NULL;
1983
1984         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1985                 list_del_init(&work->list);
1986                 qedi_fp_process_cqes(work);
1987                 if (!work->is_solicited)
1988                         kfree(work);
1989         }
1990
1991         spin_unlock_bh(&p->p_work_lock);
1992         if (thread)
1993                 kthread_stop(thread);
1994         return 0;
1995 }
1996
1997 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
1998 {
1999         struct qed_ll2_params params;
2000
2001         qedi_recover_all_conns(qedi);
2002
2003         qedi_ops->ll2->stop(qedi->cdev);
2004         qedi_ll2_free_skbs(qedi);
2005
2006         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
2007                   qedi->ll2_mtu, mtu);
2008         memset(&params, 0, sizeof(params));
2009         qedi->ll2_mtu = mtu;
2010         params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
2011         params.drop_ttl0_packets = 0;
2012         params.rx_vlan_stripping = 1;
2013         ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2014         qedi_ops->ll2->start(qedi->cdev, &params);
2015 }
2016
2017 /*
2018  * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
2019  * for gaps) for the matching absolute-pf-id of the QEDI device.
2020  */
2021 static struct nvm_iscsi_block *
2022 qedi_get_nvram_block(struct qedi_ctx *qedi)
2023 {
2024         int i;
2025         u8 pf;
2026         u32 flags;
2027         struct nvm_iscsi_block *block;
2028
2029         pf = qedi->dev_info.common.abs_pf_id;
2030         block = &qedi->iscsi_image->iscsi_cfg.block[0];
2031         for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
2032                 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
2033                         NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
2034                 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
2035                                 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
2036                         (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
2037                                 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
2038                         return block;
2039         }
2040         return NULL;
2041 }
2042
2043 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
2044 {
2045         struct qedi_ctx *qedi = data;
2046         struct nvm_iscsi_initiator *initiator;
2047         int rc = 1;
2048         u32 ipv6_en, dhcp_en, ip_len;
2049         struct nvm_iscsi_block *block;
2050         char *fmt, *ip, *sub, *gw;
2051
2052         block = qedi_get_nvram_block(qedi);
2053         if (!block)
2054                 return 0;
2055
2056         initiator = &block->initiator;
2057         ipv6_en = block->generic.ctrl_flags &
2058                   NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2059         dhcp_en = block->generic.ctrl_flags &
2060                   NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
2061         /* Static IP assignments. */
2062         fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
2063         ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
2064         ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2065         sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
2066               initiator->ipv4.subnet_mask.byte;
2067         gw = ipv6_en ? initiator->ipv6.gateway.byte :
2068              initiator->ipv4.gateway.byte;
2069         /* DHCP IP adjustments. */
2070         fmt = dhcp_en ? "%s\n" : fmt;
2071         if (dhcp_en) {
2072                 ip = ipv6_en ? "0::0" : "0.0.0.0";
2073                 sub = ip;
2074                 gw = ip;
2075                 ip_len = ipv6_en ? 5 : 8;
2076         }
2077
2078         switch (type) {
2079         case ISCSI_BOOT_ETH_IP_ADDR:
2080                 rc = snprintf(buf, ip_len, fmt, ip);
2081                 break;
2082         case ISCSI_BOOT_ETH_SUBNET_MASK:
2083                 rc = snprintf(buf, ip_len, fmt, sub);
2084                 break;
2085         case ISCSI_BOOT_ETH_GATEWAY:
2086                 rc = snprintf(buf, ip_len, fmt, gw);
2087                 break;
2088         case ISCSI_BOOT_ETH_FLAGS:
2089                 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
2090                 break;
2091         case ISCSI_BOOT_ETH_INDEX:
2092                 rc = snprintf(buf, 3, "0\n");
2093                 break;
2094         case ISCSI_BOOT_ETH_MAC:
2095                 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
2096                 break;
2097         case ISCSI_BOOT_ETH_VLAN:
2098                 rc = snprintf(buf, 12, "%d\n",
2099                               GET_FIELD2(initiator->generic_cont0,
2100                                          NVM_ISCSI_CFG_INITIATOR_VLAN));
2101                 break;
2102         case ISCSI_BOOT_ETH_ORIGIN:
2103                 if (dhcp_en)
2104                         rc = snprintf(buf, 3, "3\n");
2105                 break;
2106         default:
2107                 rc = 0;
2108                 break;
2109         }
2110
2111         return rc;
2112 }
2113
2114 static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2115 {
2116         int rc = 1;
2117
2118         switch (type) {
2119         case ISCSI_BOOT_ETH_FLAGS:
2120         case ISCSI_BOOT_ETH_MAC:
2121         case ISCSI_BOOT_ETH_INDEX:
2122         case ISCSI_BOOT_ETH_IP_ADDR:
2123         case ISCSI_BOOT_ETH_SUBNET_MASK:
2124         case ISCSI_BOOT_ETH_GATEWAY:
2125         case ISCSI_BOOT_ETH_ORIGIN:
2126         case ISCSI_BOOT_ETH_VLAN:
2127                 rc = 0444;
2128                 break;
2129         default:
2130                 rc = 0;
2131                 break;
2132         }
2133         return rc;
2134 }
2135
2136 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2137 {
2138         struct qedi_ctx *qedi = data;
2139         struct nvm_iscsi_initiator *initiator;
2140         int rc;
2141         struct nvm_iscsi_block *block;
2142
2143         block = qedi_get_nvram_block(qedi);
2144         if (!block)
2145                 return 0;
2146
2147         initiator = &block->initiator;
2148
2149         switch (type) {
2150         case ISCSI_BOOT_INI_INITIATOR_NAME:
2151                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2152                              initiator->initiator_name.byte);
2153                 break;
2154         default:
2155                 rc = 0;
2156                 break;
2157         }
2158         return rc;
2159 }
2160
2161 static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2162 {
2163         int rc;
2164
2165         switch (type) {
2166         case ISCSI_BOOT_INI_INITIATOR_NAME:
2167                 rc = 0444;
2168                 break;
2169         default:
2170                 rc = 0;
2171                 break;
2172         }
2173         return rc;
2174 }
2175
2176 static ssize_t
2177 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2178                         char *buf, enum qedi_nvm_tgts idx)
2179 {
2180         int rc = 1;
2181         u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2182         struct nvm_iscsi_block *block;
2183         char *chap_name, *chap_secret;
2184         char *mchap_name, *mchap_secret;
2185
2186         block = qedi_get_nvram_block(qedi);
2187         if (!block)
2188                 goto exit_show_tgt_info;
2189
2190         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2191                   "Port:%d, tgt_idx:%d\n",
2192                   GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2193
2194         ctrl_flags = block->target[idx].ctrl_flags &
2195                      NVM_ISCSI_CFG_TARGET_ENABLED;
2196
2197         if (!ctrl_flags) {
2198                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2199                           "Target disabled\n");
2200                 goto exit_show_tgt_info;
2201         }
2202
2203         ipv6_en = block->generic.ctrl_flags &
2204                   NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2205         ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2206         chap_en = block->generic.ctrl_flags &
2207                   NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2208         chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2209         chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2210
2211         mchap_en = block->generic.ctrl_flags &
2212                   NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2213         mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2214         mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2215
2216         switch (type) {
2217         case ISCSI_BOOT_TGT_NAME:
2218                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2219                              block->target[idx].target_name.byte);
2220                 break;
2221         case ISCSI_BOOT_TGT_IP_ADDR:
2222                 if (ipv6_en)
2223                         rc = snprintf(buf, ip_len, "%pI6\n",
2224                                       block->target[idx].ipv6_addr.byte);
2225                 else
2226                         rc = snprintf(buf, ip_len, "%pI4\n",
2227                                       block->target[idx].ipv4_addr.byte);
2228                 break;
2229         case ISCSI_BOOT_TGT_PORT:
2230                 rc = snprintf(buf, 12, "%d\n",
2231                               GET_FIELD2(block->target[idx].generic_cont0,
2232                                          NVM_ISCSI_CFG_TARGET_TCP_PORT));
2233                 break;
2234         case ISCSI_BOOT_TGT_LUN:
2235                 rc = snprintf(buf, 22, "%.*d\n",
2236                               block->target[idx].lun.value[1],
2237                               block->target[idx].lun.value[0]);
2238                 break;
2239         case ISCSI_BOOT_TGT_CHAP_NAME:
2240                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2241                              chap_name);
2242                 break;
2243         case ISCSI_BOOT_TGT_CHAP_SECRET:
2244                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2245                              chap_secret);
2246                 break;
2247         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2248                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2249                              mchap_name);
2250                 break;
2251         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2252                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2253                              mchap_secret);
2254                 break;
2255         case ISCSI_BOOT_TGT_FLAGS:
2256                 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
2257                 break;
2258         case ISCSI_BOOT_TGT_NIC_ASSOC:
2259                 rc = snprintf(buf, 3, "0\n");
2260                 break;
2261         default:
2262                 rc = 0;
2263                 break;
2264         }
2265
2266 exit_show_tgt_info:
2267         return rc;
2268 }
2269
2270 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2271 {
2272         struct qedi_ctx *qedi = data;
2273
2274         return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2275 }
2276
2277 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2278 {
2279         struct qedi_ctx *qedi = data;
2280
2281         return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2282 }
2283
2284 static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2285 {
2286         int rc;
2287
2288         switch (type) {
2289         case ISCSI_BOOT_TGT_NAME:
2290         case ISCSI_BOOT_TGT_IP_ADDR:
2291         case ISCSI_BOOT_TGT_PORT:
2292         case ISCSI_BOOT_TGT_LUN:
2293         case ISCSI_BOOT_TGT_CHAP_NAME:
2294         case ISCSI_BOOT_TGT_CHAP_SECRET:
2295         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2296         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2297         case ISCSI_BOOT_TGT_NIC_ASSOC:
2298         case ISCSI_BOOT_TGT_FLAGS:
2299                 rc = 0444;
2300                 break;
2301         default:
2302                 rc = 0;
2303                 break;
2304         }
2305         return rc;
2306 }
2307
2308 static void qedi_boot_release(void *data)
2309 {
2310         struct qedi_ctx *qedi = data;
2311
2312         scsi_host_put(qedi->shost);
2313 }
2314
2315 static int qedi_get_boot_info(struct qedi_ctx *qedi)
2316 {
2317         int ret = 1;
2318
2319         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2320                   "Get NVM iSCSI CFG image\n");
2321         ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2322                                               QED_NVM_IMAGE_ISCSI_CFG,
2323                                               (char *)qedi->iscsi_image,
2324                                               sizeof(struct qedi_nvm_iscsi_image));
2325         if (ret)
2326                 QEDI_ERR(&qedi->dbg_ctx,
2327                          "Could not get NVM image. ret = %d\n", ret);
2328
2329         return ret;
2330 }
2331
2332 static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2333 {
2334         struct iscsi_boot_kobj *boot_kobj;
2335
2336         if (qedi_get_boot_info(qedi))
2337                 return -EPERM;
2338
2339         qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2340         if (!qedi->boot_kset)
2341                 goto kset_free;
2342
2343         if (!scsi_host_get(qedi->shost))
2344                 goto kset_free;
2345
2346         boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2347                                              qedi_show_boot_tgt_pri_info,
2348                                              qedi_tgt_get_attr_visibility,
2349                                              qedi_boot_release);
2350         if (!boot_kobj)
2351                 goto put_host;
2352
2353         if (!scsi_host_get(qedi->shost))
2354                 goto kset_free;
2355
2356         boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2357                                              qedi_show_boot_tgt_sec_info,
2358                                              qedi_tgt_get_attr_visibility,
2359                                              qedi_boot_release);
2360         if (!boot_kobj)
2361                 goto put_host;
2362
2363         if (!scsi_host_get(qedi->shost))
2364                 goto kset_free;
2365
2366         boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2367                                                 qedi_show_boot_ini_info,
2368                                                 qedi_ini_get_attr_visibility,
2369                                                 qedi_boot_release);
2370         if (!boot_kobj)
2371                 goto put_host;
2372
2373         if (!scsi_host_get(qedi->shost))
2374                 goto kset_free;
2375
2376         boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2377                                                qedi_show_boot_eth_info,
2378                                                qedi_eth_get_attr_visibility,
2379                                                qedi_boot_release);
2380         if (!boot_kobj)
2381                 goto put_host;
2382
2383         return 0;
2384
2385 put_host:
2386         scsi_host_put(qedi->shost);
2387 kset_free:
2388         iscsi_boot_destroy_kset(qedi->boot_kset);
2389         return -ENOMEM;
2390 }
2391
2392 static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev,
2393                                                pci_channel_state_t state)
2394 {
2395         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2396
2397         QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n",
2398                  __func__, state);
2399
2400         if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
2401                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2402                           "Recovery already in progress.\n");
2403                 return PCI_ERS_RESULT_NONE;
2404         }
2405
2406         qedi_ops->common->recovery_process(qedi->cdev);
2407
2408         return PCI_ERS_RESULT_CAN_RECOVER;
2409 }
2410
2411 static void __qedi_remove(struct pci_dev *pdev, int mode)
2412 {
2413         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2414         int rval;
2415         u16 retry = 10;
2416
2417         if (mode == QEDI_MODE_NORMAL)
2418                 iscsi_host_remove(qedi->shost, false);
2419         else if (mode == QEDI_MODE_SHUTDOWN)
2420                 iscsi_host_remove(qedi->shost, true);
2421
2422         if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2423                 if (qedi->tmf_thread) {
2424                         destroy_workqueue(qedi->tmf_thread);
2425                         qedi->tmf_thread = NULL;
2426                 }
2427
2428                 if (qedi->offload_thread) {
2429                         destroy_workqueue(qedi->offload_thread);
2430                         qedi->offload_thread = NULL;
2431                 }
2432         }
2433
2434 #ifdef CONFIG_DEBUG_FS
2435         qedi_dbg_host_exit(&qedi->dbg_ctx);
2436 #endif
2437         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2438                 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2439
2440         qedi_sync_free_irqs(qedi);
2441
2442         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2443                 while (retry--) {
2444                         rval = qedi_ops->stop(qedi->cdev);
2445                         if (rval < 0)
2446                                 msleep(1000);
2447                         else
2448                                 break;
2449                 }
2450                 qedi_ops->ll2->stop(qedi->cdev);
2451         }
2452
2453         cancel_delayed_work_sync(&qedi->recovery_work);
2454         cancel_delayed_work_sync(&qedi->board_disable_work);
2455
2456         qedi_free_iscsi_pf_param(qedi);
2457
2458         rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2459         if (rval)
2460                 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2461
2462         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2463                 qedi_ops->common->slowpath_stop(qedi->cdev);
2464                 qedi_ops->common->remove(qedi->cdev);
2465         }
2466
2467         qedi_destroy_fp(qedi);
2468
2469         if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2470                 qedi_release_cid_que(qedi);
2471                 qedi_cm_free_mem(qedi);
2472                 qedi_free_uio(qedi->udev);
2473                 qedi_free_itt(qedi);
2474
2475                 if (qedi->ll2_recv_thread) {
2476                         kthread_stop(qedi->ll2_recv_thread);
2477                         qedi->ll2_recv_thread = NULL;
2478                 }
2479                 qedi_ll2_free_skbs(qedi);
2480
2481                 if (qedi->boot_kset)
2482                         iscsi_boot_destroy_kset(qedi->boot_kset);
2483
2484                 iscsi_host_free(qedi->shost);
2485         }
2486 }
2487
2488 static void qedi_board_disable_work(struct work_struct *work)
2489 {
2490         struct qedi_ctx *qedi =
2491                         container_of(work, struct qedi_ctx,
2492                                      board_disable_work.work);
2493
2494         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2495                   "Fan failure, Unloading firmware context.\n");
2496
2497         if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2498                 return;
2499
2500         __qedi_remove(qedi->pdev, QEDI_MODE_NORMAL);
2501 }
2502
2503 static void qedi_shutdown(struct pci_dev *pdev)
2504 {
2505         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2506
2507         QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__);
2508         if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2509                 return;
2510         __qedi_remove(pdev, QEDI_MODE_SHUTDOWN);
2511 }
2512
2513 static int __qedi_probe(struct pci_dev *pdev, int mode)
2514 {
2515         struct qedi_ctx *qedi;
2516         struct qed_ll2_params params;
2517         u8 dp_level = 0;
2518         bool is_vf = false;
2519         char host_buf[16];
2520         struct qed_link_params link_params;
2521         struct qed_slowpath_params sp_params;
2522         struct qed_probe_params qed_params;
2523         void *task_start, *task_end;
2524         int rc;
2525         u16 retry = 10;
2526
2527         if (mode != QEDI_MODE_RECOVERY) {
2528                 qedi = qedi_host_alloc(pdev);
2529                 if (!qedi) {
2530                         rc = -ENOMEM;
2531                         goto exit_probe;
2532                 }
2533         } else {
2534                 qedi = pci_get_drvdata(pdev);
2535         }
2536
2537 retry_probe:
2538         if (mode == QEDI_MODE_RECOVERY)
2539                 msleep(2000);
2540
2541         memset(&qed_params, 0, sizeof(qed_params));
2542         qed_params.protocol = QED_PROTOCOL_ISCSI;
2543         qed_params.dp_module = qedi_qed_debug;
2544         qed_params.dp_level = dp_level;
2545         qed_params.is_vf = is_vf;
2546         qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2547         if (!qedi->cdev) {
2548                 if (mode == QEDI_MODE_RECOVERY && retry) {
2549                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2550                                   "Retry %d initialize hardware\n", retry);
2551                         retry--;
2552                         goto retry_probe;
2553                 }
2554
2555                 rc = -ENODEV;
2556                 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2557                 goto free_host;
2558         }
2559
2560         set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags);
2561         set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags);
2562         atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2563
2564         rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2565         if (rc)
2566                 goto free_host;
2567
2568         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2569                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
2570                   qedi->dev_info.common.num_hwfns,
2571                   qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
2572
2573         rc = qedi_set_iscsi_pf_param(qedi);
2574         if (rc) {
2575                 rc = -ENOMEM;
2576                 QEDI_ERR(&qedi->dbg_ctx,
2577                          "Set iSCSI pf param fail\n");
2578                 goto free_host;
2579         }
2580
2581         qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2582
2583         rc = qedi_prepare_fp(qedi);
2584         if (rc) {
2585                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2586                 goto free_pf_params;
2587         }
2588
2589         /* Start the Slowpath-process */
2590         memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2591         sp_params.int_mode = QED_INT_MODE_MSIX;
2592         sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2593         sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2594         sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2595         sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2596         strscpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2597         rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2598         if (rc) {
2599                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2600                 goto stop_hw;
2601         }
2602
2603         /* update_pf_params needs to be called before and after slowpath
2604          * start
2605          */
2606         qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2607
2608         rc = qedi_setup_int(qedi);
2609         if (rc)
2610                 goto stop_iscsi_func;
2611
2612         qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2613
2614         /* Learn information crucial for qedi to progress */
2615         rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2616         if (rc)
2617                 goto stop_iscsi_func;
2618
2619         /* Record BDQ producer doorbell addresses */
2620         qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2621         qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2622         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2623                   "BDQ primary_prod=%p secondary_prod=%p.\n",
2624                   qedi->bdq_primary_prod,
2625                   qedi->bdq_secondary_prod);
2626
2627         /*
2628          * We need to write the number of BDs in the BDQ we've preallocated so
2629          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2630          * packet arrives.
2631          */
2632         qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2633         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2634                   "Writing %d to primary and secondary BDQ doorbell registers.\n",
2635                   qedi->bdq_prod_idx);
2636         writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2637         readw(qedi->bdq_primary_prod);
2638         writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2639         readw(qedi->bdq_secondary_prod);
2640
2641         ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2642         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2643                   qedi->mac);
2644
2645         snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no);
2646         qedi_ops->common->set_name(qedi->cdev, host_buf);
2647
2648         qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2649
2650         memset(&params, 0, sizeof(params));
2651         params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2652         qedi->ll2_mtu = DEF_PATH_MTU;
2653         params.drop_ttl0_packets = 0;
2654         params.rx_vlan_stripping = 1;
2655         ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2656
2657         if (mode != QEDI_MODE_RECOVERY) {
2658                 /* set up rx path */
2659                 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2660                 spin_lock_init(&qedi->ll2_lock);
2661                 /* start qedi context */
2662                 spin_lock_init(&qedi->hba_lock);
2663                 spin_lock_init(&qedi->task_idx_lock);
2664                 mutex_init(&qedi->stats_lock);
2665         }
2666         qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2667         qedi_ops->ll2->start(qedi->cdev, &params);
2668
2669         if (mode != QEDI_MODE_RECOVERY) {
2670                 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2671                                                     (void *)qedi,
2672                                                     "qedi_ll2_thread");
2673         }
2674
2675         rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2676                              qedi, qedi_iscsi_event_cb);
2677         if (rc) {
2678                 rc = -ENODEV;
2679                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2680                 goto stop_slowpath;
2681         }
2682
2683         task_start = qedi_get_task_mem(&qedi->tasks, 0);
2684         task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2685         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2686                   "Task context start=%p, end=%p block_size=%u.\n",
2687                    task_start, task_end, qedi->tasks.size);
2688
2689         memset(&link_params, 0, sizeof(link_params));
2690         link_params.link_up = true;
2691         rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2692         if (rc) {
2693                 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2694                 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2695         }
2696
2697 #ifdef CONFIG_DEBUG_FS
2698         qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2699                            qedi_dbg_fops);
2700 #endif
2701         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2702                   "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2703                   QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2704                   FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2705
2706         if (mode == QEDI_MODE_NORMAL) {
2707                 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2708                         QEDI_ERR(&qedi->dbg_ctx,
2709                                  "Could not add iscsi host\n");
2710                         rc = -ENOMEM;
2711                         goto remove_host;
2712                 }
2713
2714                 /* Allocate uio buffers */
2715                 rc = qedi_alloc_uio_rings(qedi);
2716                 if (rc) {
2717                         QEDI_ERR(&qedi->dbg_ctx,
2718                                  "UIO alloc ring failed err=%d\n", rc);
2719                         goto remove_host;
2720                 }
2721
2722                 rc = qedi_init_uio(qedi);
2723                 if (rc) {
2724                         QEDI_ERR(&qedi->dbg_ctx,
2725                                  "UIO init failed, err=%d\n", rc);
2726                         goto free_uio;
2727                 }
2728
2729                 /* host the array on iscsi_conn */
2730                 rc = qedi_setup_cid_que(qedi);
2731                 if (rc) {
2732                         QEDI_ERR(&qedi->dbg_ctx,
2733                                  "Could not setup cid que\n");
2734                         goto free_uio;
2735                 }
2736
2737                 rc = qedi_cm_alloc_mem(qedi);
2738                 if (rc) {
2739                         QEDI_ERR(&qedi->dbg_ctx,
2740                                  "Could not alloc cm memory\n");
2741                         goto free_cid_que;
2742                 }
2743
2744                 rc = qedi_alloc_itt(qedi);
2745                 if (rc) {
2746                         QEDI_ERR(&qedi->dbg_ctx,
2747                                  "Could not alloc itt memory\n");
2748                         goto free_cid_que;
2749                 }
2750
2751                 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2752                 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2753                 if (!qedi->tmf_thread) {
2754                         QEDI_ERR(&qedi->dbg_ctx,
2755                                  "Unable to start tmf thread!\n");
2756                         rc = -ENODEV;
2757                         goto free_cid_que;
2758                 }
2759
2760                 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2761                 qedi->offload_thread = create_workqueue(host_buf);
2762                 if (!qedi->offload_thread) {
2763                         QEDI_ERR(&qedi->dbg_ctx,
2764                                  "Unable to start offload thread!\n");
2765                         rc = -ENODEV;
2766                         goto free_tmf_thread;
2767                 }
2768
2769                 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler);
2770                 INIT_DELAYED_WORK(&qedi->board_disable_work,
2771                                   qedi_board_disable_work);
2772
2773                 /* F/w needs 1st task context memory entry for performance */
2774                 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2775                 atomic_set(&qedi->num_offloads, 0);
2776
2777                 if (qedi_setup_boot_info(qedi))
2778                         QEDI_ERR(&qedi->dbg_ctx,
2779                                  "No iSCSI boot target configured\n");
2780
2781                 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2782                 if (rc)
2783                         QEDI_ERR(&qedi->dbg_ctx,
2784                                  "Failed to send drv state to MFW\n");
2785
2786         }
2787
2788         return 0;
2789
2790 free_tmf_thread:
2791         destroy_workqueue(qedi->tmf_thread);
2792 free_cid_que:
2793         qedi_release_cid_que(qedi);
2794 free_uio:
2795         qedi_free_uio(qedi->udev);
2796 remove_host:
2797 #ifdef CONFIG_DEBUG_FS
2798         qedi_dbg_host_exit(&qedi->dbg_ctx);
2799 #endif
2800         iscsi_host_remove(qedi->shost, false);
2801 stop_iscsi_func:
2802         qedi_ops->stop(qedi->cdev);
2803 stop_slowpath:
2804         qedi_ops->common->slowpath_stop(qedi->cdev);
2805 stop_hw:
2806         qedi_ops->common->remove(qedi->cdev);
2807 free_pf_params:
2808         qedi_free_iscsi_pf_param(qedi);
2809 free_host:
2810         iscsi_host_free(qedi->shost);
2811 exit_probe:
2812         return rc;
2813 }
2814
2815 static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session)
2816 {
2817         struct iscsi_session *session = cls_session->dd_data;
2818         struct iscsi_conn *conn = session->leadconn;
2819         struct qedi_conn *qedi_conn = conn->dd_data;
2820
2821         iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED);
2822 }
2823
2824 static void qedi_recovery_handler(struct work_struct *work)
2825 {
2826         struct qedi_ctx *qedi =
2827                         container_of(work, struct qedi_ctx, recovery_work.work);
2828
2829         iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery);
2830
2831         /* Call common_ops->recovery_prolog to allow the MFW to quiesce
2832          * any PCI transactions.
2833          */
2834         qedi_ops->common->recovery_prolog(qedi->cdev);
2835
2836         __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY);
2837         __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY);
2838         clear_bit(QEDI_IN_RECOVERY, &qedi->flags);
2839 }
2840
2841 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2842 {
2843         return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2844 }
2845
2846 static void qedi_remove(struct pci_dev *pdev)
2847 {
2848         __qedi_remove(pdev, QEDI_MODE_NORMAL);
2849 }
2850
2851 static struct pci_device_id qedi_pci_tbl[] = {
2852         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2853         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2854         { 0 },
2855 };
2856 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2857
2858 static enum cpuhp_state qedi_cpuhp_state;
2859
2860 static struct pci_error_handlers qedi_err_handler = {
2861         .error_detected = qedi_io_error_detected,
2862 };
2863
2864 static struct pci_driver qedi_pci_driver = {
2865         .name = QEDI_MODULE_NAME,
2866         .id_table = qedi_pci_tbl,
2867         .probe = qedi_probe,
2868         .remove = qedi_remove,
2869         .shutdown = qedi_shutdown,
2870         .err_handler = &qedi_err_handler,
2871 };
2872
2873 static int __init qedi_init(void)
2874 {
2875         struct qedi_percpu_s *p;
2876         int cpu, rc = 0;
2877
2878         qedi_ops = qed_get_iscsi_ops();
2879         if (!qedi_ops) {
2880                 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2881                 return -EINVAL;
2882         }
2883
2884 #ifdef CONFIG_DEBUG_FS
2885         qedi_dbg_init("qedi");
2886 #endif
2887
2888         qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2889         if (!qedi_scsi_transport) {
2890                 QEDI_ERR(NULL, "Could not register qedi transport");
2891                 rc = -ENOMEM;
2892                 goto exit_qedi_init_1;
2893         }
2894
2895         for_each_possible_cpu(cpu) {
2896                 p = &per_cpu(qedi_percpu, cpu);
2897                 INIT_LIST_HEAD(&p->work_list);
2898                 spin_lock_init(&p->p_work_lock);
2899                 p->iothread = NULL;
2900         }
2901
2902         rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2903                                qedi_cpu_online, qedi_cpu_offline);
2904         if (rc < 0)
2905                 goto exit_qedi_init_2;
2906         qedi_cpuhp_state = rc;
2907
2908         rc = pci_register_driver(&qedi_pci_driver);
2909         if (rc) {
2910                 QEDI_ERR(NULL, "Failed to register driver\n");
2911                 goto exit_qedi_hp;
2912         }
2913
2914         return 0;
2915
2916 exit_qedi_hp:
2917         cpuhp_remove_state(qedi_cpuhp_state);
2918 exit_qedi_init_2:
2919         iscsi_unregister_transport(&qedi_iscsi_transport);
2920 exit_qedi_init_1:
2921 #ifdef CONFIG_DEBUG_FS
2922         qedi_dbg_exit();
2923 #endif
2924         qed_put_iscsi_ops();
2925         return rc;
2926 }
2927
2928 static void __exit qedi_cleanup(void)
2929 {
2930         pci_unregister_driver(&qedi_pci_driver);
2931         cpuhp_remove_state(qedi_cpuhp_state);
2932         iscsi_unregister_transport(&qedi_iscsi_transport);
2933
2934 #ifdef CONFIG_DEBUG_FS
2935         qedi_dbg_exit();
2936 #endif
2937         qed_put_iscsi_ops();
2938 }
2939
2940 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2941 MODULE_LICENSE("GPL");
2942 MODULE_AUTHOR("QLogic Corporation");
2943 MODULE_VERSION(QEDI_MODULE_VERSION);
2944 module_init(qedi_init);
2945 module_exit(qedi_cleanup);