drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2013 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_target.h"
   9
  10 #include <linux/delay.h>
  11 #include <linux/slab.h>
  12 #include <scsi/scsi_tcq.h>
  13 #include <scsi/scsi_bsg_fc.h>
  14 #include <scsi/scsi_eh.h>
  15
  16 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  17 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  18 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  19 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  20         sts_entry_t *);
  21
  22 /**
  23  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  24  * @irq:
  25  * @dev_id: SCSI driver HA context
  26  *
  27  * Called by system whenever the host adapter generates an interrupt.
  28  *
  29  * Returns handled flag.
  30  */
  31 irqreturn_t
  32 qla2100_intr_handler(int irq, void *dev_id)
  33 {
  34         scsi_qla_host_t *vha;
  35         struct qla_hw_data *ha;
  36         struct device_reg_2xxx __iomem *reg;
  37         int             status;
  38         unsigned long   iter;
  39         uint16_t        hccr;
  40         uint16_t        mb[4];
  41         struct rsp_que *rsp;
  42         unsigned long   flags;
  43
  44         rsp = (struct rsp_que *) dev_id;
  45         if (!rsp) {
  46                 ql_log(ql_log_info, NULL, 0x505d,
  47                     "%s: NULL response queue pointer.\n", __func__);
  48                 return (IRQ_NONE);
  49         }
  50
  51         ha = rsp->hw;
  52         reg = &ha->iobase->isp;
  53         status = 0;
  54
  55         spin_lock_irqsave(&ha->hardware_lock, flags);
  56         vha = pci_get_drvdata(ha->pdev);
  57         for (iter = 50; iter--; ) {
  58                 hccr = RD_REG_WORD(&reg->hccr);
  59                 if (hccr & HCCR_RISC_PAUSE) {
  60                         if (pci_channel_offline(ha->pdev))
  61                                 break;
  62
  63                         /*
  64                          * Issue a "HARD" reset in order for the RISC interrupt
  65                          * bit to be cleared.  Schedule a big hammer to get
  66                          * out of the RISC PAUSED state.
  67                          */
  68                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  69                         RD_REG_WORD(&reg->hccr);
  70
  71                         ha->isp_ops->fw_dump(vha, 1);
  72                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  73                         break;
  74                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  75                         break;
  76
  77                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  78                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  79                         RD_REG_WORD(&reg->hccr);
  80
  81                         /* Get mailbox data. */
  82                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  83                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  84                                 qla2x00_mbx_completion(vha, mb[0]);
  85                                 status |= MBX_INTERRUPT;
  86                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  87                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  88                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  89                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  90                                 qla2x00_async_event(vha, rsp, mb);
  91                         } else {
  92                                 /*EMPTY*/
  93                                 ql_dbg(ql_dbg_async, vha, 0x5025,
  94                                     "Unrecognized interrupt type (%d).\n",
  95                                     mb[0]);
  96                         }
  97                         /* Release mailbox registers. */
  98                         WRT_REG_WORD(&reg->semaphore, 0);
  99                         RD_REG_WORD(&reg->semaphore);
 100                 } else {
 101                         qla2x00_process_response_queue(rsp);
 102
 103                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 104                         RD_REG_WORD(&reg->hccr);
 105                 }
 106         }
 107         qla2x00_handle_mbx_completion(ha, status);
 108         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 109
 110         return (IRQ_HANDLED);
 111 }
 112
 113 /**
 114  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 115  * @irq:
 116  * @dev_id: SCSI driver HA context
 117  *
 118  * Called by system whenever the host adapter generates an interrupt.
 119  *
 120  * Returns handled flag.
 121  */
 122 irqreturn_t
 123 qla2300_intr_handler(int irq, void *dev_id)
 124 {
 125         scsi_qla_host_t *vha;
 126         struct device_reg_2xxx __iomem *reg;
 127         int             status;
 128         unsigned long   iter;
 129         uint32_t        stat;
 130         uint16_t        hccr;
 131         uint16_t        mb[4];
 132         struct rsp_que *rsp;
 133         struct qla_hw_data *ha;
 134         unsigned long   flags;
 135
 136         rsp = (struct rsp_que *) dev_id;
 137         if (!rsp) {
 138                 ql_log(ql_log_info, NULL, 0x5058,
 139                     "%s: NULL response queue pointer.\n", __func__);
 140                 return (IRQ_NONE);
 141         }
 142
 143         ha = rsp->hw;
 144         reg = &ha->iobase->isp;
 145         status = 0;
 146
 147         spin_lock_irqsave(&ha->hardware_lock, flags);
 148         vha = pci_get_drvdata(ha->pdev);
 149         for (iter = 50; iter--; ) {
 150                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 151                 if (stat & HSR_RISC_PAUSED) {
 152                         if (unlikely(pci_channel_offline(ha->pdev)))
 153                                 break;
 154
 155                         hccr = RD_REG_WORD(&reg->hccr);
 156                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 157                                 ql_log(ql_log_warn, vha, 0x5026,
 158                                     "Parity error -- HCCR=%x, Dumping "
 159                                     "firmware.\n", hccr);
 160                         else
 161                                 ql_log(ql_log_warn, vha, 0x5027,
 162                                     "RISC paused -- HCCR=%x, Dumping "
 163                                     "firmware.\n", hccr);
 164
 165                         /*
 166                          * Issue a "HARD" reset in order for the RISC
 167                          * interrupt bit to be cleared.  Schedule a big
 168                          * hammer to get out of the RISC PAUSED state.
 169                          */
 170                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 171                         RD_REG_WORD(&reg->hccr);
 172
 173                         ha->isp_ops->fw_dump(vha, 1);
 174                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 175                         break;
 176                 } else if ((stat & HSR_RISC_INT) == 0)
 177                         break;
 178
 179                 switch (stat & 0xff) {
 180                 case 0x1:
 181                 case 0x2:
 182                 case 0x10:
 183                 case 0x11:
 184                         qla2x00_mbx_completion(vha, MSW(stat));
 185                         status |= MBX_INTERRUPT;
 186
 187                         /* Release mailbox registers. */
 188                         WRT_REG_WORD(&reg->semaphore, 0);
 189                         break;
 190                 case 0x12:
 191                         mb[0] = MSW(stat);
 192                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 193                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 194                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 195                         qla2x00_async_event(vha, rsp, mb);
 196                         break;
 197                 case 0x13:
 198                         qla2x00_process_response_queue(rsp);
 199                         break;
 200                 case 0x15:
 201                         mb[0] = MBA_CMPLT_1_16BIT;
 202                         mb[1] = MSW(stat);
 203                         qla2x00_async_event(vha, rsp, mb);
 204                         break;
 205                 case 0x16:
 206                         mb[0] = MBA_SCSI_COMPLETION;
 207                         mb[1] = MSW(stat);
 208                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 209                         qla2x00_async_event(vha, rsp, mb);
 210                         break;
 211                 default:
 212                         ql_dbg(ql_dbg_async, vha, 0x5028,
 213                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 214                         break;
 215                 }
 216                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 217                 RD_REG_WORD_RELAXED(&reg->hccr);
 218         }
 219         qla2x00_handle_mbx_completion(ha, status);
 220         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 221
 222         return (IRQ_HANDLED);
 223 }
 224
 225 /**
 226  * qla2x00_mbx_completion() - Process mailbox command completions.
 227  * @ha: SCSI driver HA context
 228  * @mb0: Mailbox0 register
 229  */
 230 static void
 231 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 232 {
 233         uint16_t        cnt;
 234         uint32_t        mboxes;
 235         uint16_t __iomem *wptr;
 236         struct qla_hw_data *ha = vha->hw;
 237         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 238
 239         /* Read all mbox registers? */
 240         mboxes = (1 << ha->mbx_count) - 1;
 241         if (!ha->mcp)
 242                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
 243         else
 244                 mboxes = ha->mcp->in_mb;
 245
 246         /* Load return mailbox registers. */
 247         ha->flags.mbox_int = 1;
 248         ha->mailbox_out[0] = mb0;
 249         mboxes >>= 1;
 250         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 251
 252         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 253                 if (IS_QLA2200(ha) && cnt == 8)
 254                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 255                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 256                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 257                 else if (mboxes & BIT_0)
 258                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 259
 260                 wptr++;
 261                 mboxes >>= 1;
 262         }
 263 }
 264
 265 static void
 266 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 267 {
 268         static char *event[] =
 269                 { "Complete", "Request Notification", "Time Extension" };
 270         int rval;
 271         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 272         uint16_t __iomem *wptr;
 273         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 274
 275         /* Seed data -- mailbox1 -> mailbox7. */
 276         wptr = (uint16_t __iomem *)&reg24->mailbox1;
 277         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 278                 mb[cnt] = RD_REG_WORD(wptr);
 279
 280         ql_dbg(ql_dbg_async, vha, 0x5021,
 281             "Inter-Driver Communication %s -- "
 282             "%04x %04x %04x %04x %04x %04x %04x.\n",
 283             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 284             mb[4], mb[5], mb[6]);
 285         if ((aen == MBA_IDC_COMPLETE && mb[1] >> 15)) {
 286                 vha->hw->flags.idc_compl_status = 1;
 287                 if (vha->hw->notify_dcbx_comp)
 288                         complete(&vha->hw->dcbx_comp);
 289         }
 290
 291         /* Acknowledgement needed? [Notify && non-zero timeout]. */
 292         timeout = (descr >> 8) & 0xf;
 293         if (aen != MBA_IDC_NOTIFY || !timeout)
 294                 return;
 295
 296         ql_dbg(ql_dbg_async, vha, 0x5022,
 297             "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 298             vha->host_no, event[aen & 0xff], timeout);
 299
 300         rval = qla2x00_post_idc_ack_work(vha, mb);
 301         if (rval != QLA_SUCCESS)
 302                 ql_log(ql_log_warn, vha, 0x5023,
 303                     "IDC failed to post ACK.\n");
 304 }
 305
 306 #define LS_UNKNOWN      2
 307 const char *
 308 qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
 309 {
 310         static const char * const link_speeds[] = {
 311                 "1", "2", "?", "4", "8", "16", "10"
 312         };
 313
 314         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 315                 return link_speeds[0];
 316         else if (speed == 0x13)
 317                 return link_speeds[6];
 318         else if (speed < 6)
 319                 return link_speeds[speed];
 320         else
 321                 return link_speeds[LS_UNKNOWN];
 322 }
 323
 324 static void
 325 qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 326 {
 327         struct qla_hw_data *ha = vha->hw;
 328
 329         /*
 330          * 8200 AEN Interpretation:
 331          * mb[0] = AEN code
 332          * mb[1] = AEN Reason code
 333          * mb[2] = LSW of Peg-Halt Status-1 Register
 334          * mb[6] = MSW of Peg-Halt Status-1 Register
 335          * mb[3] = LSW of Peg-Halt Status-2 register
 336          * mb[7] = MSW of Peg-Halt Status-2 register
 337          * mb[4] = IDC Device-State Register value
 338          * mb[5] = IDC Driver-Presence Register value
 339          */
 340         ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
 341             "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
 342             mb[0], mb[1], mb[2], mb[6]);
 343         ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
 344             "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
 345             "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);
 346
 347         if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
 348                                 IDC_HEARTBEAT_FAILURE)) {
 349                 ha->flags.nic_core_hung = 1;
 350                 ql_log(ql_log_warn, vha, 0x5060,
 351                     "83XX: F/W Error Reported: Check if reset required.\n");
 352
 353                 if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
 354                         uint32_t protocol_engine_id, fw_err_code, err_level;
 355
 356                         /*
 357                          * IDC_PEG_HALT_STATUS_CHANGE interpretation:
 358                          *  - PEG-Halt Status-1 Register:
 359                          *      (LSW = mb[2], MSW = mb[6])
 360                          *      Bits 0-7   = protocol-engine ID
 361                          *      Bits 8-28  = f/w error code
 362                          *      Bits 29-31 = Error-level
 363                          *          Error-level 0x1 = Non-Fatal error
 364                          *          Error-level 0x2 = Recoverable Fatal error
 365                          *          Error-level 0x4 = UnRecoverable Fatal error
 366                          *  - PEG-Halt Status-2 Register:
 367                          *      (LSW = mb[3], MSW = mb[7])
 368                          */
 369                         protocol_engine_id = (mb[2] & 0xff);
 370                         fw_err_code = (((mb[2] & 0xff00) >> 8) |
 371                             ((mb[6] & 0x1fff) << 8));
 372                         err_level = ((mb[6] & 0xe000) >> 13);
 373                         ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
 374                             "Register: protocol_engine_id=0x%x "
 375                             "fw_err_code=0x%x err_level=0x%x.\n",
 376                             protocol_engine_id, fw_err_code, err_level);
 377                         ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
 378                             "Register: 0x%x%x.\n", mb[7], mb[3]);
 379                         if (err_level == ERR_LEVEL_NON_FATAL) {
 380                                 ql_log(ql_log_warn, vha, 0x5063,
 381                                     "Not a fatal error, f/w has recovered "
 382                                     "iteself.\n");
 383                         } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
 384                                 ql_log(ql_log_fatal, vha, 0x5064,
 385                                     "Recoverable Fatal error: Chip reset "
 386                                     "required.\n");
 387                                 qla83xx_schedule_work(vha,
 388                                     QLA83XX_NIC_CORE_RESET);
 389                         } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
 390                                 ql_log(ql_log_fatal, vha, 0x5065,
 391                                     "Unrecoverable Fatal error: Set FAILED "
 392                                     "state, reboot required.\n");
 393                                 qla83xx_schedule_work(vha,
 394                                     QLA83XX_NIC_CORE_UNRECOVERABLE);
 395                         }
 396                 }
 397
 398                 if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
 399                         uint16_t peg_fw_state, nw_interface_link_up;
 400                         uint16_t nw_interface_signal_detect, sfp_status;
 401                         uint16_t htbt_counter, htbt_monitor_enable;
 402                         uint16_t sfp_additonal_info, sfp_multirate;
 403                         uint16_t sfp_tx_fault, link_speed, dcbx_status;
 404
 405                         /*
 406                          * IDC_NIC_FW_REPORTED_FAILURE interpretation:
 407                          *  - PEG-to-FC Status Register:
 408                          *      (LSW = mb[2], MSW = mb[6])
 409                          *      Bits 0-7   = Peg-Firmware state
 410                          *      Bit 8      = N/W Interface Link-up
 411                          *      Bit 9      = N/W Interface signal detected
 412                          *      Bits 10-11 = SFP Status
 413                          *        SFP Status 0x0 = SFP+ transceiver not expected
 414                          *        SFP Status 0x1 = SFP+ transceiver not present
 415                          *        SFP Status 0x2 = SFP+ transceiver invalid
 416                          *        SFP Status 0x3 = SFP+ transceiver present and
 417                          *        valid
 418                          *      Bits 12-14 = Heartbeat Counter
 419                          *      Bit 15     = Heartbeat Monitor Enable
 420                          *      Bits 16-17 = SFP Additional Info
 421                          *        SFP info 0x0 = Unregocnized transceiver for
 422                          *        Ethernet
 423                          *        SFP info 0x1 = SFP+ brand validation failed
 424                          *        SFP info 0x2 = SFP+ speed validation failed
 425                          *        SFP info 0x3 = SFP+ access error
 426                          *      Bit 18     = SFP Multirate
 427                          *      Bit 19     = SFP Tx Fault
 428                          *      Bits 20-22 = Link Speed
 429                          *      Bits 23-27 = Reserved
 430                          *      Bits 28-30 = DCBX Status
 431                          *        DCBX Status 0x0 = DCBX Disabled
 432                          *        DCBX Status 0x1 = DCBX Enabled
 433                          *        DCBX Status 0x2 = DCBX Exchange error
 434                          *      Bit 31     = Reserved
 435                          */
 436                         peg_fw_state = (mb[2] & 0x00ff);
 437                         nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
 438                         nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
 439                         sfp_status = ((mb[2] & 0x0c00) >> 10);
 440                         htbt_counter = ((mb[2] & 0x7000) >> 12);
 441                         htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
 442                         sfp_additonal_info = (mb[6] & 0x0003);
 443                         sfp_multirate = ((mb[6] & 0x0004) >> 2);
 444                         sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
 445                         link_speed = ((mb[6] & 0x0070) >> 4);
 446                         dcbx_status = ((mb[6] & 0x7000) >> 12);
 447
 448                         ql_log(ql_log_warn, vha, 0x5066,
 449                             "Peg-to-Fc Status Register:\n"
 450                             "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
 451                             "nw_interface_signal_detect=0x%x"
 452                             "\nsfp_statis=0x%x.\n ", peg_fw_state,
 453                             nw_interface_link_up, nw_interface_signal_detect,
 454                             sfp_status);
 455                         ql_log(ql_log_warn, vha, 0x5067,
 456                             "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
 457                             "sfp_additonal_info=0x%x, sfp_multirate=0x%x.\n ",
 458                             htbt_counter, htbt_monitor_enable,
 459                             sfp_additonal_info, sfp_multirate);
 460                         ql_log(ql_log_warn, vha, 0x5068,
 461                             "sfp_tx_fault=0x%x, link_state=0x%x, "
 462                             "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
 463                             dcbx_status);
 464
 465                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 466                 }
 467
 468                 if (mb[1] & IDC_HEARTBEAT_FAILURE) {
 469                         ql_log(ql_log_warn, vha, 0x5069,
 470                             "Heartbeat Failure encountered, chip reset "
 471                             "required.\n");
 472
 473                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 474                 }
 475         }
 476
 477         if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
 478                 ql_log(ql_log_info, vha, 0x506a,
 479                     "IDC Device-State changed = 0x%x.\n", mb[4]);
 480                 if (ha->flags.nic_core_reset_owner)
 481                         return;
 482                 qla83xx_schedule_work(vha, MBA_IDC_AEN);
 483         }
 484 }
 485
 486 int
 487 qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
 488 {
 489         struct qla_hw_data *ha = vha->hw;
 490         scsi_qla_host_t *vp;
 491         uint32_t vp_did;
 492         unsigned long flags;
 493         int ret = 0;
 494
 495         if (!ha->num_vhosts)
 496                 return ret;
 497
 498         spin_lock_irqsave(&ha->vport_slock, flags);
 499         list_for_each_entry(vp, &ha->vp_list, list) {
 500                 vp_did = vp->d_id.b24;
 501                 if (vp_did == rscn_entry) {
 502                         ret = 1;
 503                         break;
 504                 }
 505         }
 506         spin_unlock_irqrestore(&ha->vport_slock, flags);
 507
 508         return ret;
 509 }
 510
 511 /**
 512  * qla2x00_async_event() - Process aynchronous events.
 513  * @ha: SCSI driver HA context
 514  * @mb: Mailbox registers (0 - 3)
 515  */
 516 void
 517 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 518 {
 519         uint16_t        handle_cnt;
 520         uint16_t        cnt, mbx;
 521         uint32_t        handles[5];
 522         struct qla_hw_data *ha = vha->hw;
 523         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 524         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 525         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 526         uint32_t        rscn_entry, host_pid;
 527         unsigned long   flags;
 528
 529         /* Setup to process RIO completion. */
 530         handle_cnt = 0;
 531         if (IS_CNA_CAPABLE(ha))
 532                 goto skip_rio;
 533         switch (mb[0]) {
 534         case MBA_SCSI_COMPLETION:
 535                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 536                 handle_cnt = 1;
 537                 break;
 538         case MBA_CMPLT_1_16BIT:
 539                 handles[0] = mb[1];
 540                 handle_cnt = 1;
 541                 mb[0] = MBA_SCSI_COMPLETION;
 542                 break;
 543         case MBA_CMPLT_2_16BIT:
 544                 handles[0] = mb[1];
 545                 handles[1] = mb[2];
 546                 handle_cnt = 2;
 547                 mb[0] = MBA_SCSI_COMPLETION;
 548                 break;
 549         case MBA_CMPLT_3_16BIT:
 550                 handles[0] = mb[1];
 551                 handles[1] = mb[2];
 552                 handles[2] = mb[3];
 553                 handle_cnt = 3;
 554                 mb[0] = MBA_SCSI_COMPLETION;
 555                 break;
 556         case MBA_CMPLT_4_16BIT:
 557                 handles[0] = mb[1];
 558                 handles[1] = mb[2];
 559                 handles[2] = mb[3];
 560                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 561                 handle_cnt = 4;
 562                 mb[0] = MBA_SCSI_COMPLETION;
 563                 break;
 564         case MBA_CMPLT_5_16BIT:
 565                 handles[0] = mb[1];
 566                 handles[1] = mb[2];
 567                 handles[2] = mb[3];
 568                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 569                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 570                 handle_cnt = 5;
 571                 mb[0] = MBA_SCSI_COMPLETION;
 572                 break;
 573         case MBA_CMPLT_2_32BIT:
 574                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 575                 handles[1] = le32_to_cpu(
 576                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 577                     RD_MAILBOX_REG(ha, reg, 6));
 578                 handle_cnt = 2;
 579                 mb[0] = MBA_SCSI_COMPLETION;
 580                 break;
 581         default:
 582                 break;
 583         }
 584 skip_rio:
 585         switch (mb[0]) {
 586         case MBA_SCSI_COMPLETION:       /* Fast Post */
 587                 if (!vha->flags.online)
 588                         break;
 589
 590                 for (cnt = 0; cnt < handle_cnt; cnt++)
 591                         qla2x00_process_completed_request(vha, rsp->req,
 592                                 handles[cnt]);
 593                 break;
 594
 595         case MBA_RESET:                 /* Reset */
 596                 ql_dbg(ql_dbg_async, vha, 0x5002,
 597                     "Asynchronous RESET.\n");
 598
 599                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 600                 break;
 601
 602         case MBA_SYSTEM_ERR:            /* System Error */
 603                 mbx = (IS_QLA81XX(ha) || IS_QLA83XX(ha)) ?
 604                         RD_REG_WORD(&reg24->mailbox7) : 0;
 605                 ql_log(ql_log_warn, vha, 0x5003,
 606                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 607                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 608
 609                 ha->isp_ops->fw_dump(vha, 1);
 610
 611                 if (IS_FWI2_CAPABLE(ha)) {
 612                         if (mb[1] == 0 && mb[2] == 0) {
 613                                 ql_log(ql_log_fatal, vha, 0x5004,
 614                                     "Unrecoverable Hardware Error: adapter "
 615                                     "marked OFFLINE!\n");
 616                                 vha->flags.online = 0;
 617                                 vha->device_flags |= DFLG_DEV_FAILED;
 618                         } else {
 619                                 /* Check to see if MPI timeout occurred */
 620                                 if ((mbx & MBX_3) && (ha->flags.port0))
 621                                         set_bit(MPI_RESET_NEEDED,
 622                                             &vha->dpc_flags);
 623
 624                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 625                         }
 626                 } else if (mb[1] == 0) {
 627                         ql_log(ql_log_fatal, vha, 0x5005,
 628                             "Unrecoverable Hardware Error: adapter marked "
 629                             "OFFLINE!\n");
 630                         vha->flags.online = 0;
 631                         vha->device_flags |= DFLG_DEV_FAILED;
 632                 } else
 633                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 634                 break;
 635
 636         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 637                 ql_log(ql_log_warn, vha, 0x5006,
 638                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 639
 640                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 641                 break;
 642
 643         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 644                 ql_log(ql_log_warn, vha, 0x5007,
 645                     "ISP Response Transfer Error.\n");
 646
 647                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 648                 break;
 649
 650         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 651                 ql_dbg(ql_dbg_async, vha, 0x5008,
 652                     "Asynchronous WAKEUP_THRES.\n");
 653
 654                 break;
 655         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 656                 ql_dbg(ql_dbg_async, vha, 0x5009,
 657                     "LIP occurred (%x).\n", mb[1]);
 658
 659                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 660                         atomic_set(&vha->loop_state, LOOP_DOWN);
 661                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 662                         qla2x00_mark_all_devices_lost(vha, 1);
 663                 }
 664
 665                 if (vha->vp_idx) {
 666                         atomic_set(&vha->vp_state, VP_FAILED);
 667                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 668                 }
 669
 670                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 671                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 672
 673                 vha->flags.management_server_logged_in = 0;
 674                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 675                 break;
 676
 677         case MBA_LOOP_UP:               /* Loop Up Event */
 678                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 679                         ha->link_data_rate = PORT_SPEED_1GB;
 680                 else
 681                         ha->link_data_rate = mb[1];
 682
 683                 ql_dbg(ql_dbg_async, vha, 0x500a,
 684                     "LOOP UP detected (%s Gbps).\n",
 685                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 686
 687                 vha->flags.management_server_logged_in = 0;
 688                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 689                 break;
 690
 691         case MBA_LOOP_DOWN:             /* Loop Down Event */
 692                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 693                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 694                 mbx = IS_QLA82XX(ha) ? RD_REG_WORD(&reg82->mailbox_out[4]) : mbx;
 695                 ql_dbg(ql_dbg_async, vha, 0x500b,
 696                     "LOOP DOWN detected (%x %x %x %x).\n",
 697                     mb[1], mb[2], mb[3], mbx);
 698
 699                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 700                         atomic_set(&vha->loop_state, LOOP_DOWN);
 701                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 702                         vha->device_flags |= DFLG_NO_CABLE;
 703                         qla2x00_mark_all_devices_lost(vha, 1);
 704                 }
 705
 706                 if (vha->vp_idx) {
 707                         atomic_set(&vha->vp_state, VP_FAILED);
 708                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 709                 }
 710
 711                 vha->flags.management_server_logged_in = 0;
 712                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 713                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 714                 break;
 715
 716         case MBA_LIP_RESET:             /* LIP reset occurred */
 717                 ql_dbg(ql_dbg_async, vha, 0x500c,
 718                     "LIP reset occurred (%x).\n", mb[1]);
 719
 720                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 721                         atomic_set(&vha->loop_state, LOOP_DOWN);
 722                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 723                         qla2x00_mark_all_devices_lost(vha, 1);
 724                 }
 725
 726                 if (vha->vp_idx) {
 727                         atomic_set(&vha->vp_state, VP_FAILED);
 728                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 729                 }
 730
 731                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 732
 733                 ha->operating_mode = LOOP;
 734                 vha->flags.management_server_logged_in = 0;
 735                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 736                 break;
 737
 738         /* case MBA_DCBX_COMPLETE: */
 739         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 740                 if (IS_QLA2100(ha))
 741                         break;
 742
 743                 if (IS_QLA81XX(ha) || IS_QLA82XX(ha) || IS_QLA8031(ha)) {
 744                         ql_dbg(ql_dbg_async, vha, 0x500d,
 745                             "DCBX Completed -- %04x %04x %04x.\n",
 746                             mb[1], mb[2], mb[3]);
 747                         if (ha->notify_dcbx_comp)
 748                                 complete(&ha->dcbx_comp);
 749
 750                 } else
 751                         ql_dbg(ql_dbg_async, vha, 0x500e,
 752                             "Asynchronous P2P MODE received.\n");
 753
 754                 /*
 755                  * Until there's a transition from loop down to loop up, treat
 756                  * this as loop down only.
 757                  */
 758                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 759                         atomic_set(&vha->loop_state, LOOP_DOWN);
 760                         if (!atomic_read(&vha->loop_down_timer))
 761                                 atomic_set(&vha->loop_down_timer,
 762                                     LOOP_DOWN_TIME);
 763                         qla2x00_mark_all_devices_lost(vha, 1);
 764                 }
 765
 766                 if (vha->vp_idx) {
 767                         atomic_set(&vha->vp_state, VP_FAILED);
 768                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 769                 }
 770
 771                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 772                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 773
 774                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 775                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 776
 777                 ha->flags.gpsc_supported = 1;
 778                 vha->flags.management_server_logged_in = 0;
 779                 break;
 780
 781         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 782                 if (IS_QLA2100(ha))
 783                         break;
 784
 785                 ql_dbg(ql_dbg_async, vha, 0x500f,
 786                     "Configuration change detected: value=%x.\n", mb[1]);
 787
 788                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 789                         atomic_set(&vha->loop_state, LOOP_DOWN);
 790                         if (!atomic_read(&vha->loop_down_timer))
 791                                 atomic_set(&vha->loop_down_timer,
 792                                     LOOP_DOWN_TIME);
 793                         qla2x00_mark_all_devices_lost(vha, 1);
 794                 }
 795
 796                 if (vha->vp_idx) {
 797                         atomic_set(&vha->vp_state, VP_FAILED);
 798                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 799                 }
 800
 801                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 802                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 803                 break;
 804
 805         case MBA_PORT_UPDATE:           /* Port database update */
 806                 /*
 807                  * Handle only global and vn-port update events
 808                  *
 809                  * Relevant inputs:
 810                  * mb[1] = N_Port handle of changed port
 811                  * OR 0xffff for global event
 812                  * mb[2] = New login state
 813                  * 7 = Port logged out
 814                  * mb[3] = LSB is vp_idx, 0xff = all vps
 815                  *
 816                  * Skip processing if:
 817                  *       Event is global, vp_idx is NOT all vps,
 818                  *           vp_idx does not match
 819                  *       Event is not global, vp_idx does not match
 820                  */
 821                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 822                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 823                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 824                         break;
 825
 826                 /* Global event -- port logout or port unavailable. */
 827                 if (mb[1] == 0xffff && mb[2] == 0x7) {
 828                         ql_dbg(ql_dbg_async, vha, 0x5010,
 829                             "Port unavailable %04x %04x %04x.\n",
 830                             mb[1], mb[2], mb[3]);
 831                         ql_log(ql_log_warn, vha, 0x505e,
 832                             "Link is offline.\n");
 833
 834                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 835                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 836                                 atomic_set(&vha->loop_down_timer,
 837                                     LOOP_DOWN_TIME);
 838                                 vha->device_flags |= DFLG_NO_CABLE;
 839                                 qla2x00_mark_all_devices_lost(vha, 1);
 840                         }
 841
 842                         if (vha->vp_idx) {
 843                                 atomic_set(&vha->vp_state, VP_FAILED);
 844                                 fc_vport_set_state(vha->fc_vport,
 845                                     FC_VPORT_FAILED);
 846                                 qla2x00_mark_all_devices_lost(vha, 1);
 847                         }
 848
 849                         vha->flags.management_server_logged_in = 0;
 850                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 851                         break;
 852                 }
 853
 854                 /*
 855                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 856                  * event etc. earlier indicating loop is down) then process
 857                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 858                  */
 859                 atomic_set(&vha->loop_down_timer, 0);
 860                 if (mb[1] != 0xffff || (mb[2] != 0x6 && mb[2] != 0x4)) {
 861                         ql_dbg(ql_dbg_async, vha, 0x5011,
 862                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
 863                             mb[1], mb[2], mb[3]);
 864
 865                         qlt_async_event(mb[0], vha, mb);
 866                         break;
 867                 }
 868
 869                 ql_dbg(ql_dbg_async, vha, 0x5012,
 870                     "Port database changed %04x %04x %04x.\n",
 871                     mb[1], mb[2], mb[3]);
 872                 ql_log(ql_log_warn, vha, 0x505f,
 873                     "Link is operational (%s Gbps).\n",
 874                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 875
 876                 /*
 877                  * Mark all devices as missing so we will login again.
 878                  */
 879                 atomic_set(&vha->loop_state, LOOP_UP);
 880
 881                 qla2x00_mark_all_devices_lost(vha, 1);
 882
 883                 if (vha->vp_idx == 0 && !qla_ini_mode_enabled(vha))
 884                         set_bit(SCR_PENDING, &vha->dpc_flags);
 885
 886                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 887                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 888
 889                 qlt_async_event(mb[0], vha, mb);
 890                 break;
 891
 892         case MBA_RSCN_UPDATE:           /* State Change Registration */
 893                 /* Check if the Vport has issued a SCR */
 894                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
 895                         break;
 896                 /* Only handle SCNs for our Vport index. */
 897                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
 898                         break;
 899
 900                 ql_dbg(ql_dbg_async, vha, 0x5013,
 901                     "RSCN database changed -- %04x %04x %04x.\n",
 902                     mb[1], mb[2], mb[3]);
 903
 904                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
 905                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
 906                                 | vha->d_id.b.al_pa;
 907                 if (rscn_entry == host_pid) {
 908                         ql_dbg(ql_dbg_async, vha, 0x5014,
 909                             "Ignoring RSCN update to local host "
 910                             "port ID (%06x).\n", host_pid);
 911                         break;
 912                 }
 913
 914                 /* Ignore reserved bits from RSCN-payload. */
 915                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
 916
 917                 /* Skip RSCNs for virtual ports on the same physical port */
 918                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
 919                         break;
 920
 921                 atomic_set(&vha->loop_down_timer, 0);
 922                 vha->flags.management_server_logged_in = 0;
 923
 924                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 925                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
 926                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
 927                 break;
 928
 929         /* case MBA_RIO_RESPONSE: */
 930         case MBA_ZIO_RESPONSE:
 931                 ql_dbg(ql_dbg_async, vha, 0x5015,
 932                     "[R|Z]IO update completion.\n");
 933
 934                 if (IS_FWI2_CAPABLE(ha))
 935                         qla24xx_process_response_queue(vha, rsp);
 936                 else
 937                         qla2x00_process_response_queue(rsp);
 938                 break;
 939
 940         case MBA_DISCARD_RND_FRAME:
 941                 ql_dbg(ql_dbg_async, vha, 0x5016,
 942                     "Discard RND Frame -- %04x %04x %04x.\n",
 943                     mb[1], mb[2], mb[3]);
 944                 break;
 945
 946         case MBA_TRACE_NOTIFICATION:
 947                 ql_dbg(ql_dbg_async, vha, 0x5017,
 948                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
 949                 break;
 950
 951         case MBA_ISP84XX_ALERT:
 952                 ql_dbg(ql_dbg_async, vha, 0x5018,
 953                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
 954                     mb[1], mb[2], mb[3]);
 955
 956                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
 957                 switch (mb[1]) {
 958                 case A84_PANIC_RECOVERY:
 959                         ql_log(ql_log_info, vha, 0x5019,
 960                             "Alert 84XX: panic recovery %04x %04x.\n",
 961                             mb[2], mb[3]);
 962                         break;
 963                 case A84_OP_LOGIN_COMPLETE:
 964                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
 965                         ql_log(ql_log_info, vha, 0x501a,
 966                             "Alert 84XX: firmware version %x.\n",
 967                             ha->cs84xx->op_fw_version);
 968                         break;
 969                 case A84_DIAG_LOGIN_COMPLETE:
 970                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 971                         ql_log(ql_log_info, vha, 0x501b,
 972                             "Alert 84XX: diagnostic firmware version %x.\n",
 973                             ha->cs84xx->diag_fw_version);
 974                         break;
 975                 case A84_GOLD_LOGIN_COMPLETE:
 976                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 977                         ha->cs84xx->fw_update = 1;
 978                         ql_log(ql_log_info, vha, 0x501c,
 979                             "Alert 84XX: gold firmware version %x.\n",
 980                             ha->cs84xx->gold_fw_version);
 981                         break;
 982                 default:
 983                         ql_log(ql_log_warn, vha, 0x501d,
 984                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
 985                             mb[1], mb[2], mb[3]);
 986                 }
 987                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
 988                 break;
 989         case MBA_DCBX_START:
 990                 ql_dbg(ql_dbg_async, vha, 0x501e,
 991                     "DCBX Started -- %04x %04x %04x.\n",
 992                     mb[1], mb[2], mb[3]);
 993                 break;
 994         case MBA_DCBX_PARAM_UPDATE:
 995                 ql_dbg(ql_dbg_async, vha, 0x501f,
 996                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
 997                     mb[1], mb[2], mb[3]);
 998                 break;
 999         case MBA_FCF_CONF_ERR:
1000                 ql_dbg(ql_dbg_async, vha, 0x5020,
1001                     "FCF Configuration Error -- %04x %04x %04x.\n",
1002                     mb[1], mb[2], mb[3]);
1003                 break;
1004         case MBA_IDC_NOTIFY:
1005                 if (IS_QLA8031(vha->hw)) {
1006                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1007                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1008                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1009                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1010                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1011                                 /*
1012                                  * Extend loop down timer since port is active.
1013                                  */
1014                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1015                                         atomic_set(&vha->loop_down_timer,
1016                                             LOOP_DOWN_TIME);
1017                                 qla2xxx_wake_dpc(vha);
1018                         }
1019                 }
1020         case MBA_IDC_COMPLETE:
1021                 if (ha->notify_lb_portup_comp)
1022                         complete(&ha->lb_portup_comp);
1023                 /* Fallthru */
1024         case MBA_IDC_TIME_EXT:
1025                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw))
1026                         qla81xx_idc_event(vha, mb[0], mb[1]);
1027                 break;
1028
1029         case MBA_IDC_AEN:
1030                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1031                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1032                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1033                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1034                 qla83xx_handle_8200_aen(vha, mb);
1035                 break;
1036
1037         default:
1038                 ql_dbg(ql_dbg_async, vha, 0x5057,
1039                     "Unknown AEN:%04x %04x %04x %04x\n",
1040                     mb[0], mb[1], mb[2], mb[3]);
1041         }
1042
1043         qlt_async_event(mb[0], vha, mb);
1044
1045         if (!vha->vp_idx && ha->num_vhosts)
1046                 qla2x00_alert_all_vps(rsp, mb);
1047 }
1048
1049 /**
1050  * qla2x00_process_completed_request() - Process a Fast Post response.
1051  * @ha: SCSI driver HA context
1052  * @index: SRB index
1053  */
1054 void
1055 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1056                                   struct req_que *req, uint32_t index)
1057 {
1058         srb_t *sp;
1059         struct qla_hw_data *ha = vha->hw;
1060
1061         /* Validate handle. */
1062         if (index >= req->num_outstanding_cmds) {
1063                 ql_log(ql_log_warn, vha, 0x3014,
1064                     "Invalid SCSI command index (%x).\n", index);
1065
1066                 if (IS_QLA82XX(ha))
1067                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1068                 else
1069                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1070                 return;
1071         }
1072
1073         sp = req->outstanding_cmds[index];
1074         if (sp) {
1075                 /* Free outstanding command slot. */
1076                 req->outstanding_cmds[index] = NULL;
1077
1078                 /* Save ISP completion status */
1079                 sp->done(ha, sp, DID_OK << 16);
1080         } else {
1081                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1082
1083                 if (IS_QLA82XX(ha))
1084                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1085                 else
1086                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1087         }
1088 }
1089
1090 srb_t *
1091 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1092     struct req_que *req, void *iocb)
1093 {
1094         struct qla_hw_data *ha = vha->hw;
1095         sts_entry_t *pkt = iocb;
1096         srb_t *sp = NULL;
1097         uint16_t index;
1098
1099         index = LSW(pkt->handle);
1100         if (index >= req->num_outstanding_cmds) {
1101                 ql_log(ql_log_warn, vha, 0x5031,
1102                     "Invalid command index (%x).\n", index);
1103                 if (IS_QLA82XX(ha))
1104                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1105                 else
1106                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1107                 goto done;
1108         }
1109         sp = req->outstanding_cmds[index];
1110         if (!sp) {
1111                 ql_log(ql_log_warn, vha, 0x5032,
1112                     "Invalid completion handle (%x) -- timed-out.\n", index);
1113                 return sp;
1114         }
1115         if (sp->handle != index) {
1116                 ql_log(ql_log_warn, vha, 0x5033,
1117                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1118                 return NULL;
1119         }
1120
1121         req->outstanding_cmds[index] = NULL;
1122
1123 done:
1124         return sp;
1125 }
1126
1127 static void
1128 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1129     struct mbx_entry *mbx)
1130 {
1131         const char func[] = "MBX-IOCB";
1132         const char *type;
1133         fc_port_t *fcport;
1134         srb_t *sp;
1135         struct srb_iocb *lio;
1136         uint16_t *data;
1137         uint16_t status;
1138
1139         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1140         if (!sp)
1141                 return;
1142
1143         lio = &sp->u.iocb_cmd;
1144         type = sp->name;
1145         fcport = sp->fcport;
1146         data = lio->u.logio.data;
1147
1148         data[0] = MBS_COMMAND_ERROR;
1149         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1150             QLA_LOGIO_LOGIN_RETRIED : 0;
1151         if (mbx->entry_status) {
1152                 ql_dbg(ql_dbg_async, vha, 0x5043,
1153                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1154                     "entry-status=%x status=%x state-flag=%x "
1155                     "status-flags=%x.\n", type, sp->handle,
1156                     fcport->d_id.b.domain, fcport->d_id.b.area,
1157                     fcport->d_id.b.al_pa, mbx->entry_status,
1158                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1159                     le16_to_cpu(mbx->status_flags));
1160
1161                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1162                     (uint8_t *)mbx, sizeof(*mbx));
1163
1164                 goto logio_done;
1165         }
1166
1167         status = le16_to_cpu(mbx->status);
1168         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1169             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1170                 status = 0;
1171         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1172                 ql_dbg(ql_dbg_async, vha, 0x5045,
1173                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1174                     type, sp->handle, fcport->d_id.b.domain,
1175                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1176                     le16_to_cpu(mbx->mb1));
1177
1178                 data[0] = MBS_COMMAND_COMPLETE;
1179                 if (sp->type == SRB_LOGIN_CMD) {
1180                         fcport->port_type = FCT_TARGET;
1181                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1182                                 fcport->port_type = FCT_INITIATOR;
1183                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1184                                 fcport->flags |= FCF_FCP2_DEVICE;
1185                 }
1186                 goto logio_done;
1187         }
1188
1189         data[0] = le16_to_cpu(mbx->mb0);
1190         switch (data[0]) {
1191         case MBS_PORT_ID_USED:
1192                 data[1] = le16_to_cpu(mbx->mb1);
1193                 break;
1194         case MBS_LOOP_ID_USED:
1195                 break;
1196         default:
1197                 data[0] = MBS_COMMAND_ERROR;
1198                 break;
1199         }
1200
1201         ql_log(ql_log_warn, vha, 0x5046,
1202             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1203             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1204             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1205             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1206             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1207             le16_to_cpu(mbx->mb7));
1208
1209 logio_done:
1210         sp->done(vha, sp, 0);
1211 }
1212
1213 static void
1214 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1215     sts_entry_t *pkt, int iocb_type)
1216 {
1217         const char func[] = "CT_IOCB";
1218         const char *type;
1219         srb_t *sp;
1220         struct fc_bsg_job *bsg_job;
1221         uint16_t comp_status;
1222         int res;
1223
1224         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1225         if (!sp)
1226                 return;
1227
1228         bsg_job = sp->u.bsg_job;
1229
1230         type = "ct pass-through";
1231
1232         comp_status = le16_to_cpu(pkt->comp_status);
1233
1234         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1235          * fc payload  to the caller
1236          */
1237         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1238         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1239
1240         if (comp_status != CS_COMPLETE) {
1241                 if (comp_status == CS_DATA_UNDERRUN) {
1242                         res = DID_OK << 16;
1243                         bsg_job->reply->reply_payload_rcv_len =
1244                             le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1245
1246                         ql_log(ql_log_warn, vha, 0x5048,
1247                             "CT pass-through-%s error "
1248                             "comp_status-status=0x%x total_byte = 0x%x.\n",
1249                             type, comp_status,
1250                             bsg_job->reply->reply_payload_rcv_len);
1251                 } else {
1252                         ql_log(ql_log_warn, vha, 0x5049,
1253                             "CT pass-through-%s error "
1254                             "comp_status-status=0x%x.\n", type, comp_status);
1255                         res = DID_ERROR << 16;
1256                         bsg_job->reply->reply_payload_rcv_len = 0;
1257                 }
1258                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1259                     (uint8_t *)pkt, sizeof(*pkt));
1260         } else {
1261                 res = DID_OK << 16;
1262                 bsg_job->reply->reply_payload_rcv_len =
1263                     bsg_job->reply_payload.payload_len;
1264                 bsg_job->reply_len = 0;
1265         }
1266
1267         sp->done(vha, sp, res);
1268 }
1269
1270 static void
1271 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1272     struct sts_entry_24xx *pkt, int iocb_type)
1273 {
1274         const char func[] = "ELS_CT_IOCB";
1275         const char *type;
1276         srb_t *sp;
1277         struct fc_bsg_job *bsg_job;
1278         uint16_t comp_status;
1279         uint32_t fw_status[3];
1280         uint8_t* fw_sts_ptr;
1281         int res;
1282
1283         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1284         if (!sp)
1285                 return;
1286         bsg_job = sp->u.bsg_job;
1287
1288         type = NULL;
1289         switch (sp->type) {
1290         case SRB_ELS_CMD_RPT:
1291         case SRB_ELS_CMD_HST:
1292                 type = "els";
1293                 break;
1294         case SRB_CT_CMD:
1295                 type = "ct pass-through";
1296                 break;
1297         default:
1298                 ql_dbg(ql_dbg_user, vha, 0x503e,
1299                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1300                 return;
1301         }
1302
1303         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1304         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1305         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1306
1307         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1308          * fc payload  to the caller
1309          */
1310         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1311         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1312
1313         if (comp_status != CS_COMPLETE) {
1314                 if (comp_status == CS_DATA_UNDERRUN) {
1315                         res = DID_OK << 16;
1316                         bsg_job->reply->reply_payload_rcv_len =
1317                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1318
1319                         ql_dbg(ql_dbg_user, vha, 0x503f,
1320                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1321                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1322                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1323                             le16_to_cpu(((struct els_sts_entry_24xx *)
1324                                 pkt)->total_byte_count));
1325                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1326                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1327                 }
1328                 else {
1329                         ql_dbg(ql_dbg_user, vha, 0x5040,
1330                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1331                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1332                             type, sp->handle, comp_status,
1333                             le16_to_cpu(((struct els_sts_entry_24xx *)
1334                                 pkt)->error_subcode_1),
1335                             le16_to_cpu(((struct els_sts_entry_24xx *)
1336                                     pkt)->error_subcode_2));
1337                         res = DID_ERROR << 16;
1338                         bsg_job->reply->reply_payload_rcv_len = 0;
1339                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1340                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1341                 }
1342                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1343                                 (uint8_t *)pkt, sizeof(*pkt));
1344         }
1345         else {
1346                 res =  DID_OK << 16;
1347                 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1348                 bsg_job->reply_len = 0;
1349         }
1350
1351         sp->done(vha, sp, res);
1352 }
1353
1354 static void
1355 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1356     struct logio_entry_24xx *logio)
1357 {
1358         const char func[] = "LOGIO-IOCB";
1359         const char *type;
1360         fc_port_t *fcport;
1361         srb_t *sp;
1362         struct srb_iocb *lio;
1363         uint16_t *data;
1364         uint32_t iop[2];
1365
1366         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1367         if (!sp)
1368                 return;
1369
1370         lio = &sp->u.iocb_cmd;
1371         type = sp->name;
1372         fcport = sp->fcport;
1373         data = lio->u.logio.data;
1374
1375         data[0] = MBS_COMMAND_ERROR;
1376         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1377                 QLA_LOGIO_LOGIN_RETRIED : 0;
1378         if (logio->entry_status) {
1379                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1380                     "Async-%s error entry - hdl=%x"
1381                     "portid=%02x%02x%02x entry-status=%x.\n",
1382                     type, sp->handle, fcport->d_id.b.domain,
1383                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1384                     logio->entry_status);
1385                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1386                     (uint8_t *)logio, sizeof(*logio));
1387
1388                 goto logio_done;
1389         }
1390
1391         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1392                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1393                     "Async-%s complete - hdl=%x portid=%02x%02x%02x "
1394                     "iop0=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1395                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1396                     le32_to_cpu(logio->io_parameter[0]));
1397
1398                 data[0] = MBS_COMMAND_COMPLETE;
1399                 if (sp->type != SRB_LOGIN_CMD)
1400                         goto logio_done;
1401
1402                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1403                 if (iop[0] & BIT_4) {
1404                         fcport->port_type = FCT_TARGET;
1405                         if (iop[0] & BIT_8)
1406                                 fcport->flags |= FCF_FCP2_DEVICE;
1407                 } else if (iop[0] & BIT_5)
1408                         fcport->port_type = FCT_INITIATOR;
1409
1410                 if (iop[0] & BIT_7)
1411                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1412
1413                 if (logio->io_parameter[7] || logio->io_parameter[8])
1414                         fcport->supported_classes |= FC_COS_CLASS2;
1415                 if (logio->io_parameter[9] || logio->io_parameter[10])
1416                         fcport->supported_classes |= FC_COS_CLASS3;
1417
1418                 goto logio_done;
1419         }
1420
1421         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1422         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1423         switch (iop[0]) {
1424         case LSC_SCODE_PORTID_USED:
1425                 data[0] = MBS_PORT_ID_USED;
1426                 data[1] = LSW(iop[1]);
1427                 break;
1428         case LSC_SCODE_NPORT_USED:
1429                 data[0] = MBS_LOOP_ID_USED;
1430                 break;
1431         default:
1432                 data[0] = MBS_COMMAND_ERROR;
1433                 break;
1434         }
1435
1436         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1437             "Async-%s failed - hdl=%x portid=%02x%02x%02x comp=%x "
1438             "iop0=%x iop1=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1439             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1440             le16_to_cpu(logio->comp_status),
1441             le32_to_cpu(logio->io_parameter[0]),
1442             le32_to_cpu(logio->io_parameter[1]));
1443
1444 logio_done:
1445         sp->done(vha, sp, 0);
1446 }
1447
1448 static void
1449 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1450     struct tsk_mgmt_entry *tsk)
1451 {
1452         const char func[] = "TMF-IOCB";
1453         const char *type;
1454         fc_port_t *fcport;
1455         srb_t *sp;
1456         struct srb_iocb *iocb;
1457         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1458         int error = 1;
1459
1460         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1461         if (!sp)
1462                 return;
1463
1464         iocb = &sp->u.iocb_cmd;
1465         type = sp->name;
1466         fcport = sp->fcport;
1467
1468         if (sts->entry_status) {
1469                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1470                     "Async-%s error - hdl=%x entry-status(%x).\n",
1471                     type, sp->handle, sts->entry_status);
1472         } else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
1473                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1474                     "Async-%s error - hdl=%x completion status(%x).\n",
1475                     type, sp->handle, sts->comp_status);
1476         } else if (!(le16_to_cpu(sts->scsi_status) &
1477             SS_RESPONSE_INFO_LEN_VALID)) {
1478                 ql_log(ql_log_warn, fcport->vha, 0x503a,
1479                     "Async-%s error - hdl=%x no response info(%x).\n",
1480                     type, sp->handle, sts->scsi_status);
1481         } else if (le32_to_cpu(sts->rsp_data_len) < 4) {
1482                 ql_log(ql_log_warn, fcport->vha, 0x503b,
1483                     "Async-%s error - hdl=%x not enough response(%d).\n",
1484                     type, sp->handle, sts->rsp_data_len);
1485         } else if (sts->data[3]) {
1486                 ql_log(ql_log_warn, fcport->vha, 0x503c,
1487                     "Async-%s error - hdl=%x response(%x).\n",
1488                     type, sp->handle, sts->data[3]);
1489         } else {
1490                 error = 0;
1491         }
1492
1493         if (error) {
1494                 iocb->u.tmf.data = error;
1495                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5055,
1496                     (uint8_t *)sts, sizeof(*sts));
1497         }
1498
1499         sp->done(vha, sp, 0);
1500 }
1501
1502 /**
1503  * qla2x00_process_response_queue() - Process response queue entries.
1504  * @ha: SCSI driver HA context
1505  */
1506 void
1507 qla2x00_process_response_queue(struct rsp_que *rsp)
1508 {
1509         struct scsi_qla_host *vha;
1510         struct qla_hw_data *ha = rsp->hw;
1511         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1512         sts_entry_t     *pkt;
1513         uint16_t        handle_cnt;
1514         uint16_t        cnt;
1515
1516         vha = pci_get_drvdata(ha->pdev);
1517
1518         if (!vha->flags.online)
1519                 return;
1520
1521         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1522                 pkt = (sts_entry_t *)rsp->ring_ptr;
1523
1524                 rsp->ring_index++;
1525                 if (rsp->ring_index == rsp->length) {
1526                         rsp->ring_index = 0;
1527                         rsp->ring_ptr = rsp->ring;
1528                 } else {
1529                         rsp->ring_ptr++;
1530                 }
1531
1532                 if (pkt->entry_status != 0) {
1533                         qla2x00_error_entry(vha, rsp, pkt);
1534                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1535                         wmb();
1536                         continue;
1537                 }
1538
1539                 switch (pkt->entry_type) {
1540                 case STATUS_TYPE:
1541                         qla2x00_status_entry(vha, rsp, pkt);
1542                         break;
1543                 case STATUS_TYPE_21:
1544                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1545                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1546                                 qla2x00_process_completed_request(vha, rsp->req,
1547                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1548                         }
1549                         break;
1550                 case STATUS_TYPE_22:
1551                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1552                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1553                                 qla2x00_process_completed_request(vha, rsp->req,
1554                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1555                         }
1556                         break;
1557                 case STATUS_CONT_TYPE:
1558                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1559                         break;
1560                 case MBX_IOCB_TYPE:
1561                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1562                             (struct mbx_entry *)pkt);
1563                         break;
1564                 case CT_IOCB_TYPE:
1565                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1566                         break;
1567                 default:
1568                         /* Type Not Supported. */
1569                         ql_log(ql_log_warn, vha, 0x504a,
1570                             "Received unknown response pkt type %x "
1571                             "entry status=%x.\n",
1572                             pkt->entry_type, pkt->entry_status);
1573                         break;
1574                 }
1575                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1576                 wmb();
1577         }
1578
1579         /* Adjust ring index */
1580         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1581 }
1582
1583 static inline void
1584 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1585                      uint32_t sense_len, struct rsp_que *rsp, int res)
1586 {
1587         struct scsi_qla_host *vha = sp->fcport->vha;
1588         struct scsi_cmnd *cp = GET_CMD_SP(sp);
1589         uint32_t track_sense_len;
1590
1591         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1592                 sense_len = SCSI_SENSE_BUFFERSIZE;
1593
1594         SET_CMD_SENSE_LEN(sp, sense_len);
1595         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
1596         track_sense_len = sense_len;
1597
1598         if (sense_len > par_sense_len)
1599                 sense_len = par_sense_len;
1600
1601         memcpy(cp->sense_buffer, sense_data, sense_len);
1602
1603         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
1604         track_sense_len -= sense_len;
1605         SET_CMD_SENSE_LEN(sp, track_sense_len);
1606
1607         if (track_sense_len != 0) {
1608                 rsp->status_srb = sp;
1609                 cp->result = res;
1610         }
1611
1612         if (sense_len) {
1613                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
1614                     "Check condition Sense data, nexus%ld:%d:%d cmd=%p.\n",
1615                     sp->fcport->vha->host_no, cp->device->id, cp->device->lun,
1616                     cp);
1617                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
1618                     cp->sense_buffer, sense_len);
1619         }
1620 }
1621
1622 struct scsi_dif_tuple {
1623         __be16 guard;       /* Checksum */
1624         __be16 app_tag;         /* APPL identifier */
1625         __be32 ref_tag;         /* Target LBA or indirect LBA */
1626 };
1627
1628 /*
1629  * Checks the guard or meta-data for the type of error
1630  * detected by the HBA. In case of errors, we set the
1631  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1632  * to indicate to the kernel that the HBA detected error.
1633  */
1634 static inline int
1635 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1636 {
1637         struct scsi_qla_host *vha = sp->fcport->vha;
1638         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1639         uint8_t         *ap = &sts24->data[12];
1640         uint8_t         *ep = &sts24->data[20];
1641         uint32_t        e_ref_tag, a_ref_tag;
1642         uint16_t        e_app_tag, a_app_tag;
1643         uint16_t        e_guard, a_guard;
1644
1645         /*
1646          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
1647          * would make guard field appear at offset 2
1648          */
1649         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
1650         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
1651         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
1652         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
1653         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
1654         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
1655
1656         ql_dbg(ql_dbg_io, vha, 0x3023,
1657             "iocb(s) %p Returned STATUS.\n", sts24);
1658
1659         ql_dbg(ql_dbg_io, vha, 0x3024,
1660             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1661             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1662             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
1663             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1664             a_app_tag, e_app_tag, a_guard, e_guard);
1665
1666         /*
1667          * Ignore sector if:
1668          * For type     3: ref & app tag is all 'f's
1669          * For type 0,1,2: app tag is all 'f's
1670          */
1671         if ((a_app_tag == 0xffff) &&
1672             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
1673              (a_ref_tag == 0xffffffff))) {
1674                 uint32_t blocks_done, resid;
1675                 sector_t lba_s = scsi_get_lba(cmd);
1676
1677                 /* 2TB boundary case covered automatically with this */
1678                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
1679
1680                 resid = scsi_bufflen(cmd) - (blocks_done *
1681                     cmd->device->sector_size);
1682
1683                 scsi_set_resid(cmd, resid);
1684                 cmd->result = DID_OK << 16;
1685
1686                 /* Update protection tag */
1687                 if (scsi_prot_sg_count(cmd)) {
1688                         uint32_t i, j = 0, k = 0, num_ent;
1689                         struct scatterlist *sg;
1690                         struct sd_dif_tuple *spt;
1691
1692                         /* Patch the corresponding protection tags */
1693                         scsi_for_each_prot_sg(cmd, sg,
1694                             scsi_prot_sg_count(cmd), i) {
1695                                 num_ent = sg_dma_len(sg) / 8;
1696                                 if (k + num_ent < blocks_done) {
1697                                         k += num_ent;
1698                                         continue;
1699                                 }
1700                                 j = blocks_done - k - 1;
1701                                 k = blocks_done;
1702                                 break;
1703                         }
1704
1705                         if (k != blocks_done) {
1706                                 ql_log(ql_log_warn, vha, 0x302f,
1707                                     "unexpected tag values tag:lba=%x:%llx)\n",
1708                                     e_ref_tag, (unsigned long long)lba_s);
1709                                 return 1;
1710                         }
1711
1712                         spt = page_address(sg_page(sg)) + sg->offset;
1713                         spt += j;
1714
1715                         spt->app_tag = 0xffff;
1716                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
1717                                 spt->ref_tag = 0xffffffff;
1718                 }
1719
1720                 return 0;
1721         }
1722
1723         /* check guard */
1724         if (e_guard != a_guard) {
1725                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1726                     0x10, 0x1);
1727                 set_driver_byte(cmd, DRIVER_SENSE);
1728                 set_host_byte(cmd, DID_ABORT);
1729                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1730                 return 1;
1731         }
1732
1733         /* check ref tag */
1734         if (e_ref_tag != a_ref_tag) {
1735                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1736                     0x10, 0x3);
1737                 set_driver_byte(cmd, DRIVER_SENSE);
1738                 set_host_byte(cmd, DID_ABORT);
1739                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1740                 return 1;
1741         }
1742
1743         /* check appl tag */
1744         if (e_app_tag != a_app_tag) {
1745                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1746                     0x10, 0x2);
1747                 set_driver_byte(cmd, DRIVER_SENSE);
1748                 set_host_byte(cmd, DID_ABORT);
1749                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1750                 return 1;
1751         }
1752
1753         return 1;
1754 }
1755
1756 static void
1757 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
1758                                   struct req_que *req, uint32_t index)
1759 {
1760         struct qla_hw_data *ha = vha->hw;
1761         srb_t *sp;
1762         uint16_t        comp_status;
1763         uint16_t        scsi_status;
1764         uint16_t thread_id;
1765         uint32_t rval = EXT_STATUS_OK;
1766         struct fc_bsg_job *bsg_job = NULL;
1767         sts_entry_t *sts;
1768         struct sts_entry_24xx *sts24;
1769         sts = (sts_entry_t *) pkt;
1770         sts24 = (struct sts_entry_24xx *) pkt;
1771
1772         /* Validate handle. */
1773         if (index >= req->num_outstanding_cmds) {
1774                 ql_log(ql_log_warn, vha, 0x70af,
1775                     "Invalid SCSI completion handle 0x%x.\n", index);
1776                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1777                 return;
1778         }
1779
1780         sp = req->outstanding_cmds[index];
1781         if (sp) {
1782                 /* Free outstanding command slot. */
1783                 req->outstanding_cmds[index] = NULL;
1784                 bsg_job = sp->u.bsg_job;
1785         } else {
1786                 ql_log(ql_log_warn, vha, 0x70b0,
1787                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
1788                     req->id, index);
1789
1790                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1791                 return;
1792         }
1793
1794         if (IS_FWI2_CAPABLE(ha)) {
1795                 comp_status = le16_to_cpu(sts24->comp_status);
1796                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1797         } else {
1798                 comp_status = le16_to_cpu(sts->comp_status);
1799                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1800         }
1801
1802         thread_id = bsg_job->request->rqst_data.h_vendor.vendor_cmd[1];
1803         switch (comp_status) {
1804         case CS_COMPLETE:
1805                 if (scsi_status == 0) {
1806                         bsg_job->reply->reply_payload_rcv_len =
1807                                         bsg_job->reply_payload.payload_len;
1808                         rval = EXT_STATUS_OK;
1809                 }
1810                 goto done;
1811
1812         case CS_DATA_OVERRUN:
1813                 ql_dbg(ql_dbg_user, vha, 0x70b1,
1814                     "Command completed with date overrun thread_id=%d\n",
1815                     thread_id);
1816                 rval = EXT_STATUS_DATA_OVERRUN;
1817                 break;
1818
1819         case CS_DATA_UNDERRUN:
1820                 ql_dbg(ql_dbg_user, vha, 0x70b2,
1821                     "Command completed with date underrun thread_id=%d\n",
1822                     thread_id);
1823                 rval = EXT_STATUS_DATA_UNDERRUN;
1824                 break;
1825         case CS_BIDIR_RD_OVERRUN:
1826                 ql_dbg(ql_dbg_user, vha, 0x70b3,
1827                     "Command completed with read data overrun thread_id=%d\n",
1828                     thread_id);
1829                 rval = EXT_STATUS_DATA_OVERRUN;
1830                 break;
1831
1832         case CS_BIDIR_RD_WR_OVERRUN:
1833                 ql_dbg(ql_dbg_user, vha, 0x70b4,
1834                     "Command completed with read and write data overrun "
1835                     "thread_id=%d\n", thread_id);
1836                 rval = EXT_STATUS_DATA_OVERRUN;
1837                 break;
1838
1839         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
1840                 ql_dbg(ql_dbg_user, vha, 0x70b5,
1841                     "Command completed with read data over and write data "
1842                     "underrun thread_id=%d\n", thread_id);
1843                 rval = EXT_STATUS_DATA_OVERRUN;
1844                 break;
1845
1846         case CS_BIDIR_RD_UNDERRUN:
1847                 ql_dbg(ql_dbg_user, vha, 0x70b6,
1848                     "Command completed with read data data underrun "
1849                     "thread_id=%d\n", thread_id);
1850                 rval = EXT_STATUS_DATA_UNDERRUN;
1851                 break;
1852
1853         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
1854                 ql_dbg(ql_dbg_user, vha, 0x70b7,
1855                     "Command completed with read data under and write data "
1856                     "overrun thread_id=%d\n", thread_id);
1857                 rval = EXT_STATUS_DATA_UNDERRUN;
1858                 break;
1859
1860         case CS_BIDIR_RD_WR_UNDERRUN:
1861                 ql_dbg(ql_dbg_user, vha, 0x70b8,
1862                     "Command completed with read and write data underrun "
1863                     "thread_id=%d\n", thread_id);
1864                 rval = EXT_STATUS_DATA_UNDERRUN;
1865                 break;
1866
1867         case CS_BIDIR_DMA:
1868                 ql_dbg(ql_dbg_user, vha, 0x70b9,
1869                     "Command completed with data DMA error thread_id=%d\n",
1870                     thread_id);
1871                 rval = EXT_STATUS_DMA_ERR;
1872                 break;
1873
1874         case CS_TIMEOUT:
1875                 ql_dbg(ql_dbg_user, vha, 0x70ba,
1876                     "Command completed with timeout thread_id=%d\n",
1877                     thread_id);
1878                 rval = EXT_STATUS_TIMEOUT;
1879                 break;
1880         default:
1881                 ql_dbg(ql_dbg_user, vha, 0x70bb,
1882                     "Command completed with completion status=0x%x "
1883                     "thread_id=%d\n", comp_status, thread_id);
1884                 rval = EXT_STATUS_ERR;
1885                 break;
1886         }
1887                 bsg_job->reply->reply_payload_rcv_len = 0;
1888
1889 done:
1890         /* Return the vendor specific reply to API */
1891         bsg_job->reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
1892         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1893         /* Always return DID_OK, bsg will send the vendor specific response
1894          * in this case only */
1895         sp->done(vha, sp, (DID_OK << 6));
1896
1897 }
1898
1899 /**
1900  * qla2x00_status_entry() - Process a Status IOCB entry.
1901  * @ha: SCSI driver HA context
1902  * @pkt: Entry pointer
1903  */
1904 static void
1905 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1906 {
1907         srb_t           *sp;
1908         fc_port_t       *fcport;
1909         struct scsi_cmnd *cp;
1910         sts_entry_t *sts;
1911         struct sts_entry_24xx *sts24;
1912         uint16_t        comp_status;
1913         uint16_t        scsi_status;
1914         uint16_t        ox_id;
1915         uint8_t         lscsi_status;
1916         int32_t         resid;
1917         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
1918             fw_resid_len;
1919         uint8_t         *rsp_info, *sense_data;
1920         struct qla_hw_data *ha = vha->hw;
1921         uint32_t handle;
1922         uint16_t que;
1923         struct req_que *req;
1924         int logit = 1;
1925         int res = 0;
1926         uint16_t state_flags = 0;
1927
1928         sts = (sts_entry_t *) pkt;
1929         sts24 = (struct sts_entry_24xx *) pkt;
1930         if (IS_FWI2_CAPABLE(ha)) {
1931                 comp_status = le16_to_cpu(sts24->comp_status);
1932                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1933                 state_flags = le16_to_cpu(sts24->state_flags);
1934         } else {
1935                 comp_status = le16_to_cpu(sts->comp_status);
1936                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1937         }
1938         handle = (uint32_t) LSW(sts->handle);
1939         que = MSW(sts->handle);
1940         req = ha->req_q_map[que];
1941
1942         /* Validate handle. */
1943         if (handle < req->num_outstanding_cmds)
1944                 sp = req->outstanding_cmds[handle];
1945         else
1946                 sp = NULL;
1947
1948         if (sp == NULL) {
1949                 ql_dbg(ql_dbg_io, vha, 0x3017,
1950                     "Invalid status handle (0x%x).\n", sts->handle);
1951
1952                 if (IS_QLA82XX(ha))
1953                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1954                 else
1955                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1956                 qla2xxx_wake_dpc(vha);
1957                 return;
1958         }
1959
1960         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
1961                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
1962                 return;
1963         }
1964
1965         /* Fast path completion. */
1966         if (comp_status == CS_COMPLETE && scsi_status == 0) {
1967                 qla2x00_do_host_ramp_up(vha);
1968                 qla2x00_process_completed_request(vha, req, handle);
1969
1970                 return;
1971         }
1972
1973         req->outstanding_cmds[handle] = NULL;
1974         cp = GET_CMD_SP(sp);
1975         if (cp == NULL) {
1976                 ql_dbg(ql_dbg_io, vha, 0x3018,
1977                     "Command already returned (0x%x/%p).\n",
1978                     sts->handle, sp);
1979
1980                 return;
1981         }
1982
1983         lscsi_status = scsi_status & STATUS_MASK;
1984
1985         fcport = sp->fcport;
1986
1987         ox_id = 0;
1988         sense_len = par_sense_len = rsp_info_len = resid_len =
1989             fw_resid_len = 0;
1990         if (IS_FWI2_CAPABLE(ha)) {
1991                 if (scsi_status & SS_SENSE_LEN_VALID)
1992                         sense_len = le32_to_cpu(sts24->sense_len);
1993                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1994                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1995                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1996                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
1997                 if (comp_status == CS_DATA_UNDERRUN)
1998                         fw_resid_len = le32_to_cpu(sts24->residual_len);
1999                 rsp_info = sts24->data;
2000                 sense_data = sts24->data;
2001                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2002                 ox_id = le16_to_cpu(sts24->ox_id);
2003                 par_sense_len = sizeof(sts24->data);
2004         } else {
2005                 if (scsi_status & SS_SENSE_LEN_VALID)
2006                         sense_len = le16_to_cpu(sts->req_sense_length);
2007                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2008                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2009                 resid_len = le32_to_cpu(sts->residual_length);
2010                 rsp_info = sts->rsp_info;
2011                 sense_data = sts->req_sense_data;
2012                 par_sense_len = sizeof(sts->req_sense_data);
2013         }
2014
2015         /* Check for any FCP transport errors. */
2016         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2017                 /* Sense data lies beyond any FCP RESPONSE data. */
2018                 if (IS_FWI2_CAPABLE(ha)) {
2019                         sense_data += rsp_info_len;
2020                         par_sense_len -= rsp_info_len;
2021                 }
2022                 if (rsp_info_len > 3 && rsp_info[3]) {
2023                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2024                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2025                             rsp_info_len, rsp_info[3]);
2026
2027                         res = DID_BUS_BUSY << 16;
2028                         goto out;
2029                 }
2030         }
2031
2032         /* Check for overrun. */
2033         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2034             scsi_status & SS_RESIDUAL_OVER)
2035                 comp_status = CS_DATA_OVERRUN;
2036
2037         /*
2038          * Based on Host and scsi status generate status code for Linux
2039          */
2040         switch (comp_status) {
2041         case CS_COMPLETE:
2042         case CS_QUEUE_FULL:
2043                 if (scsi_status == 0) {
2044                         res = DID_OK << 16;
2045                         break;
2046                 }
2047                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2048                         resid = resid_len;
2049                         scsi_set_resid(cp, resid);
2050
2051                         if (!lscsi_status &&
2052                             ((unsigned)(scsi_bufflen(cp) - resid) <
2053                              cp->underflow)) {
2054                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2055                                     "Mid-layer underflow "
2056                                     "detected (0x%x of 0x%x bytes).\n",
2057                                     resid, scsi_bufflen(cp));
2058
2059                                 res = DID_ERROR << 16;
2060                                 break;
2061                         }
2062                 }
2063                 res = DID_OK << 16 | lscsi_status;
2064
2065                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2066                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2067                             "QUEUE FULL detected.\n");
2068                         break;
2069                 }
2070                 logit = 0;
2071                 if (lscsi_status != SS_CHECK_CONDITION)
2072                         break;
2073
2074                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2075                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2076                         break;
2077
2078                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2079                     rsp, res);
2080                 break;
2081
2082         case CS_DATA_UNDERRUN:
2083                 /* Use F/W calculated residual length. */
2084                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2085                 scsi_set_resid(cp, resid);
2086                 if (scsi_status & SS_RESIDUAL_UNDER) {
2087                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2088                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2089                                     "Dropped frame(s) detected "
2090                                     "(0x%x of 0x%x bytes).\n",
2091                                     resid, scsi_bufflen(cp));
2092
2093                                 res = DID_ERROR << 16 | lscsi_status;
2094                                 goto check_scsi_status;
2095                         }
2096
2097                         if (!lscsi_status &&
2098                             ((unsigned)(scsi_bufflen(cp) - resid) <
2099                             cp->underflow)) {
2100                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2101                                     "Mid-layer underflow "
2102                                     "detected (0x%x of 0x%x bytes).\n",
2103                                     resid, scsi_bufflen(cp));
2104
2105                                 res = DID_ERROR << 16;
2106                                 break;
2107                         }
2108                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2109                             lscsi_status != SAM_STAT_BUSY) {
2110                         /*
2111                          * scsi status of task set and busy are considered to be
2112                          * task not completed.
2113                          */
2114
2115                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2116                             "Dropped frame(s) detected (0x%x "
2117                             "of 0x%x bytes).\n", resid,
2118                             scsi_bufflen(cp));
2119
2120                         res = DID_ERROR << 16 | lscsi_status;
2121                         goto check_scsi_status;
2122                 } else {
2123                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2124                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2125                             scsi_status, lscsi_status);
2126                 }
2127
2128                 res = DID_OK << 16 | lscsi_status;
2129                 logit = 0;
2130
2131 check_scsi_status:
2132                 /*
2133                  * Check to see if SCSI Status is non zero. If so report SCSI
2134                  * Status.
2135                  */
2136                 if (lscsi_status != 0) {
2137                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2138                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2139                                     "QUEUE FULL detected.\n");
2140                                 logit = 1;
2141                                 break;
2142                         }
2143                         if (lscsi_status != SS_CHECK_CONDITION)
2144                                 break;
2145
2146                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2147                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2148                                 break;
2149
2150                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2151                             sense_len, rsp, res);
2152                 }
2153                 break;
2154
2155         case CS_PORT_LOGGED_OUT:
2156         case CS_PORT_CONFIG_CHG:
2157         case CS_PORT_BUSY:
2158         case CS_INCOMPLETE:
2159         case CS_PORT_UNAVAILABLE:
2160         case CS_TIMEOUT:
2161         case CS_RESET:
2162
2163                 /*
2164                  * We are going to have the fc class block the rport
2165                  * while we try to recover so instruct the mid layer
2166                  * to requeue until the class decides how to handle this.
2167                  */
2168                 res = DID_TRANSPORT_DISRUPTED << 16;
2169
2170                 if (comp_status == CS_TIMEOUT) {
2171                         if (IS_FWI2_CAPABLE(ha))
2172                                 break;
2173                         else if ((le16_to_cpu(sts->status_flags) &
2174                             SF_LOGOUT_SENT) == 0)
2175                                 break;
2176                 }
2177
2178                 ql_dbg(ql_dbg_io, fcport->vha, 0x3021,
2179                     "Port down status: port-state=0x%x.\n",
2180                     atomic_read(&fcport->state));
2181
2182                 if (atomic_read(&fcport->state) == FCS_ONLINE)
2183                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2184                 break;
2185
2186         case CS_ABORTED:
2187                 res = DID_RESET << 16;
2188                 break;
2189
2190         case CS_DIF_ERROR:
2191                 logit = qla2x00_handle_dif_error(sp, sts24);
2192                 res = cp->result;
2193                 break;
2194
2195         case CS_TRANSPORT:
2196                 res = DID_ERROR << 16;
2197
2198                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2199                         break;
2200
2201                 if (state_flags & BIT_4)
2202                         scmd_printk(KERN_WARNING, cp,
2203                             "Unsupported device '%s' found.\n",
2204                             cp->device->vendor);
2205                 break;
2206
2207         default:
2208                 res = DID_ERROR << 16;
2209                 break;
2210         }
2211
2212 out:
2213         if (logit)
2214                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2215                     "FCP command status: 0x%x-0x%x (0x%x) "
2216                     "nexus=%ld:%d:%d portid=%02x%02x%02x oxid=0x%x "
2217                     "cdb=%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x len=0x%x "
2218                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x.\n",
2219                     comp_status, scsi_status, res, vha->host_no,
2220                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2221                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2222                     cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
2223                     cp->cmnd[4], cp->cmnd[5], cp->cmnd[6], cp->cmnd[7],
2224                     cp->cmnd[8], cp->cmnd[9], scsi_bufflen(cp), rsp_info_len,
2225                     resid_len, fw_resid_len);
2226
2227         if (!res)
2228                 qla2x00_do_host_ramp_up(vha);
2229
2230         if (rsp->status_srb == NULL)
2231                 sp->done(ha, sp, res);
2232 }
2233
2234 /**
2235  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2236  * @ha: SCSI driver HA context
2237  * @pkt: Entry pointer
2238  *
2239  * Extended sense data.
2240  */
2241 static void
2242 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2243 {
2244         uint8_t sense_sz = 0;
2245         struct qla_hw_data *ha = rsp->hw;
2246         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2247         srb_t *sp = rsp->status_srb;
2248         struct scsi_cmnd *cp;
2249         uint32_t sense_len;
2250         uint8_t *sense_ptr;
2251
2252         if (!sp || !GET_CMD_SENSE_LEN(sp))
2253                 return;
2254
2255         sense_len = GET_CMD_SENSE_LEN(sp);
2256         sense_ptr = GET_CMD_SENSE_PTR(sp);
2257
2258         cp = GET_CMD_SP(sp);
2259         if (cp == NULL) {
2260                 ql_log(ql_log_warn, vha, 0x3025,
2261                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2262
2263                 rsp->status_srb = NULL;
2264                 return;
2265         }
2266
2267         if (sense_len > sizeof(pkt->data))
2268                 sense_sz = sizeof(pkt->data);
2269         else
2270                 sense_sz = sense_len;
2271
2272         /* Move sense data. */
2273         if (IS_FWI2_CAPABLE(ha))
2274                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2275         memcpy(sense_ptr, pkt->data, sense_sz);
2276         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2277                 sense_ptr, sense_sz);
2278
2279         sense_len -= sense_sz;
2280         sense_ptr += sense_sz;
2281
2282         SET_CMD_SENSE_PTR(sp, sense_ptr);
2283         SET_CMD_SENSE_LEN(sp, sense_len);
2284
2285         /* Place command on done queue. */
2286         if (sense_len == 0) {
2287                 rsp->status_srb = NULL;
2288                 sp->done(ha, sp, cp->result);
2289         }
2290 }
2291
2292 /**
2293  * qla2x00_error_entry() - Process an error entry.
2294  * @ha: SCSI driver HA context
2295  * @pkt: Entry pointer
2296  */
2297 static void
2298 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2299 {
2300         srb_t *sp;
2301         struct qla_hw_data *ha = vha->hw;
2302         const char func[] = "ERROR-IOCB";
2303         uint16_t que = MSW(pkt->handle);
2304         struct req_que *req = NULL;
2305         int res = DID_ERROR << 16;
2306
2307         ql_dbg(ql_dbg_async, vha, 0x502a,
2308             "type of error status in response: 0x%x\n", pkt->entry_status);
2309
2310         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2311                 goto fatal;
2312
2313         req = ha->req_q_map[que];
2314
2315         if (pkt->entry_status & RF_BUSY)
2316                 res = DID_BUS_BUSY << 16;
2317
2318         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2319         if (sp) {
2320                 sp->done(ha, sp, res);
2321                 return;
2322         }
2323 fatal:
2324         ql_log(ql_log_warn, vha, 0x5030,
2325             "Error entry - invalid handle/queue.\n");
2326
2327         if (IS_QLA82XX(ha))
2328                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2329         else
2330                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2331         qla2xxx_wake_dpc(vha);
2332 }
2333
2334 /**
2335  * qla24xx_mbx_completion() - Process mailbox command completions.
2336  * @ha: SCSI driver HA context
2337  * @mb0: Mailbox0 register
2338  */
2339 static void
2340 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2341 {
2342         uint16_t        cnt;
2343         uint32_t        mboxes;
2344         uint16_t __iomem *wptr;
2345         struct qla_hw_data *ha = vha->hw;
2346         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2347
2348         /* Read all mbox registers? */
2349         mboxes = (1 << ha->mbx_count) - 1;
2350         if (!ha->mcp)
2351                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2352         else
2353                 mboxes = ha->mcp->in_mb;
2354
2355         /* Load return mailbox registers. */
2356         ha->flags.mbox_int = 1;
2357         ha->mailbox_out[0] = mb0;
2358         mboxes >>= 1;
2359         wptr = (uint16_t __iomem *)&reg->mailbox1;
2360
2361         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2362                 if (mboxes & BIT_0)
2363                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2364
2365                 mboxes >>= 1;
2366                 wptr++;
2367         }
2368 }
2369
2370 /**
2371  * qla24xx_process_response_queue() - Process response queue entries.
2372  * @ha: SCSI driver HA context
2373  */
2374 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2375         struct rsp_que *rsp)
2376 {
2377         struct sts_entry_24xx *pkt;
2378         struct qla_hw_data *ha = vha->hw;
2379
2380         if (!vha->flags.online)
2381                 return;
2382
2383         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2384                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
2385
2386                 rsp->ring_index++;
2387                 if (rsp->ring_index == rsp->length) {
2388                         rsp->ring_index = 0;
2389                         rsp->ring_ptr = rsp->ring;
2390                 } else {
2391                         rsp->ring_ptr++;
2392                 }
2393
2394                 if (pkt->entry_status != 0) {
2395                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
2396
2397                         (void)qlt_24xx_process_response_error(vha, pkt);
2398
2399                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2400                         wmb();
2401                         continue;
2402                 }
2403
2404                 switch (pkt->entry_type) {
2405                 case STATUS_TYPE:
2406                         qla2x00_status_entry(vha, rsp, pkt);
2407                         break;
2408                 case STATUS_CONT_TYPE:
2409                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2410                         break;
2411                 case VP_RPT_ID_IOCB_TYPE:
2412                         qla24xx_report_id_acquisition(vha,
2413                             (struct vp_rpt_id_entry_24xx *)pkt);
2414                         break;
2415                 case LOGINOUT_PORT_IOCB_TYPE:
2416                         qla24xx_logio_entry(vha, rsp->req,
2417                             (struct logio_entry_24xx *)pkt);
2418                         break;
2419                 case TSK_MGMT_IOCB_TYPE:
2420                         qla24xx_tm_iocb_entry(vha, rsp->req,
2421                             (struct tsk_mgmt_entry *)pkt);
2422                         break;
2423                 case CT_IOCB_TYPE:
2424                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2425                         break;
2426                 case ELS_IOCB_TYPE:
2427                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2428                         break;
2429                 case ABTS_RECV_24XX:
2430                         /* ensure that the ATIO queue is empty */
2431                         qlt_24xx_process_atio_queue(vha);
2432                 case ABTS_RESP_24XX:
2433                 case CTIO_TYPE7:
2434                 case NOTIFY_ACK_TYPE:
2435                         qlt_response_pkt_all_vps(vha, (response_t *)pkt);
2436                         break;
2437                 case MARKER_TYPE:
2438                         /* Do nothing in this case, this check is to prevent it
2439                          * from falling into default case
2440                          */
2441                         break;
2442                 default:
2443                         /* Type Not Supported. */
2444                         ql_dbg(ql_dbg_async, vha, 0x5042,
2445                             "Received unknown response pkt type %x "
2446                             "entry status=%x.\n",
2447                             pkt->entry_type, pkt->entry_status);
2448                         break;
2449                 }
2450                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2451                 wmb();
2452         }
2453
2454         /* Adjust ring index */
2455         if (IS_QLA82XX(ha)) {
2456                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2457                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2458         } else
2459                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2460 }
2461
2462 static void
2463 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2464 {
2465         int rval;
2466         uint32_t cnt;
2467         struct qla_hw_data *ha = vha->hw;
2468         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2469
2470         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha))
2471                 return;
2472
2473         rval = QLA_SUCCESS;
2474         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2475         RD_REG_DWORD(&reg->iobase_addr);
2476         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2477         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2478             rval == QLA_SUCCESS; cnt--) {
2479                 if (cnt) {
2480                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2481                         udelay(10);
2482                 } else
2483                         rval = QLA_FUNCTION_TIMEOUT;
2484         }
2485         if (rval == QLA_SUCCESS)
2486                 goto next_test;
2487
2488         rval = QLA_SUCCESS;
2489         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2490         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2491             rval == QLA_SUCCESS; cnt--) {
2492                 if (cnt) {
2493                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2494                         udelay(10);
2495                 } else
2496                         rval = QLA_FUNCTION_TIMEOUT;
2497         }
2498         if (rval != QLA_SUCCESS)
2499                 goto done;
2500
2501 next_test:
2502         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2503                 ql_log(ql_log_info, vha, 0x504c,
2504                     "Additional code -- 0x55AA.\n");
2505
2506 done:
2507         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2508         RD_REG_DWORD(&reg->iobase_window);
2509 }
2510
2511 /**
2512  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
2513  * @irq:
2514  * @dev_id: SCSI driver HA context
2515  *
2516  * Called by system whenever the host adapter generates an interrupt.
2517  *
2518  * Returns handled flag.
2519  */
2520 irqreturn_t
2521 qla24xx_intr_handler(int irq, void *dev_id)
2522 {
2523         scsi_qla_host_t *vha;
2524         struct qla_hw_data *ha;
2525         struct device_reg_24xx __iomem *reg;
2526         int             status;
2527         unsigned long   iter;
2528         uint32_t        stat;
2529         uint32_t        hccr;
2530         uint16_t        mb[8];
2531         struct rsp_que *rsp;
2532         unsigned long   flags;
2533
2534         rsp = (struct rsp_que *) dev_id;
2535         if (!rsp) {
2536                 ql_log(ql_log_info, NULL, 0x5059,
2537                     "%s: NULL response queue pointer.\n", __func__);
2538                 return IRQ_NONE;
2539         }
2540
2541         ha = rsp->hw;
2542         reg = &ha->iobase->isp24;
2543         status = 0;
2544
2545         if (unlikely(pci_channel_offline(ha->pdev)))
2546                 return IRQ_HANDLED;
2547
2548         spin_lock_irqsave(&ha->hardware_lock, flags);
2549         vha = pci_get_drvdata(ha->pdev);
2550         for (iter = 50; iter--; ) {
2551                 stat = RD_REG_DWORD(&reg->host_status);
2552                 if (stat & HSRX_RISC_PAUSED) {
2553                         if (unlikely(pci_channel_offline(ha->pdev)))
2554                                 break;
2555
2556                         hccr = RD_REG_DWORD(&reg->hccr);
2557
2558                         ql_log(ql_log_warn, vha, 0x504b,
2559                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2560                             hccr);
2561
2562                         qla2xxx_check_risc_status(vha);
2563
2564                         ha->isp_ops->fw_dump(vha, 1);
2565                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2566                         break;
2567                 } else if ((stat & HSRX_RISC_INT) == 0)
2568                         break;
2569
2570                 switch (stat & 0xff) {
2571                 case INTR_ROM_MB_SUCCESS:
2572                 case INTR_ROM_MB_FAILED:
2573                 case INTR_MB_SUCCESS:
2574                 case INTR_MB_FAILED:
2575                         qla24xx_mbx_completion(vha, MSW(stat));
2576                         status |= MBX_INTERRUPT;
2577
2578                         break;
2579                 case INTR_ASYNC_EVENT:
2580                         mb[0] = MSW(stat);
2581                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2582                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2583                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2584                         qla2x00_async_event(vha, rsp, mb);
2585                         break;
2586                 case INTR_RSP_QUE_UPDATE:
2587                 case INTR_RSP_QUE_UPDATE_83XX:
2588                         qla24xx_process_response_queue(vha, rsp);
2589                         break;
2590                 case INTR_ATIO_QUE_UPDATE:
2591                         qlt_24xx_process_atio_queue(vha);
2592                         break;
2593                 case INTR_ATIO_RSP_QUE_UPDATE:
2594                         qlt_24xx_process_atio_queue(vha);
2595                         qla24xx_process_response_queue(vha, rsp);
2596                         break;
2597                 default:
2598                         ql_dbg(ql_dbg_async, vha, 0x504f,
2599                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
2600                         break;
2601                 }
2602                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2603                 RD_REG_DWORD_RELAXED(&reg->hccr);
2604                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
2605                         ndelay(3500);
2606         }
2607         qla2x00_handle_mbx_completion(ha, status);
2608         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2609
2610         return IRQ_HANDLED;
2611 }
2612
2613 static irqreturn_t
2614 qla24xx_msix_rsp_q(int irq, void *dev_id)
2615 {
2616         struct qla_hw_data *ha;
2617         struct rsp_que *rsp;
2618         struct device_reg_24xx __iomem *reg;
2619         struct scsi_qla_host *vha;
2620         unsigned long flags;
2621
2622         rsp = (struct rsp_que *) dev_id;
2623         if (!rsp) {
2624                 ql_log(ql_log_info, NULL, 0x505a,
2625                     "%s: NULL response queue pointer.\n", __func__);
2626                 return IRQ_NONE;
2627         }
2628         ha = rsp->hw;
2629         reg = &ha->iobase->isp24;
2630
2631         spin_lock_irqsave(&ha->hardware_lock, flags);
2632
2633         vha = pci_get_drvdata(ha->pdev);
2634         qla24xx_process_response_queue(vha, rsp);
2635         if (!ha->flags.disable_msix_handshake) {
2636                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2637                 RD_REG_DWORD_RELAXED(&reg->hccr);
2638         }
2639         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2640
2641         return IRQ_HANDLED;
2642 }
2643
2644 static irqreturn_t
2645 qla25xx_msix_rsp_q(int irq, void *dev_id)
2646 {
2647         struct qla_hw_data *ha;
2648         struct rsp_que *rsp;
2649         struct device_reg_24xx __iomem *reg;
2650         unsigned long flags;
2651
2652         rsp = (struct rsp_que *) dev_id;
2653         if (!rsp) {
2654                 ql_log(ql_log_info, NULL, 0x505b,
2655                     "%s: NULL response queue pointer.\n", __func__);
2656                 return IRQ_NONE;
2657         }
2658         ha = rsp->hw;
2659
2660         /* Clear the interrupt, if enabled, for this response queue */
2661         if (!ha->flags.disable_msix_handshake) {
2662                 reg = &ha->iobase->isp24;
2663                 spin_lock_irqsave(&ha->hardware_lock, flags);
2664                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2665                 RD_REG_DWORD_RELAXED(&reg->hccr);
2666                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2667         }
2668         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2669
2670         return IRQ_HANDLED;
2671 }
2672
2673 static irqreturn_t
2674 qla24xx_msix_default(int irq, void *dev_id)
2675 {
2676         scsi_qla_host_t *vha;
2677         struct qla_hw_data *ha;
2678         struct rsp_que *rsp;
2679         struct device_reg_24xx __iomem *reg;
2680         int             status;
2681         uint32_t        stat;
2682         uint32_t        hccr;
2683         uint16_t        mb[8];
2684         unsigned long flags;
2685
2686         rsp = (struct rsp_que *) dev_id;
2687         if (!rsp) {
2688                 ql_log(ql_log_info, NULL, 0x505c,
2689                     "%s: NULL response queue pointer.\n", __func__);
2690                 return IRQ_NONE;
2691         }
2692         ha = rsp->hw;
2693         reg = &ha->iobase->isp24;
2694         status = 0;
2695
2696         spin_lock_irqsave(&ha->hardware_lock, flags);
2697         vha = pci_get_drvdata(ha->pdev);
2698         do {
2699                 stat = RD_REG_DWORD(&reg->host_status);
2700                 if (stat & HSRX_RISC_PAUSED) {
2701                         if (unlikely(pci_channel_offline(ha->pdev)))
2702                                 break;
2703
2704                         hccr = RD_REG_DWORD(&reg->hccr);
2705
2706                         ql_log(ql_log_info, vha, 0x5050,
2707                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2708                             hccr);
2709
2710                         qla2xxx_check_risc_status(vha);
2711
2712                         ha->isp_ops->fw_dump(vha, 1);
2713                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2714                         break;
2715                 } else if ((stat & HSRX_RISC_INT) == 0)
2716                         break;
2717
2718                 switch (stat & 0xff) {
2719                 case INTR_ROM_MB_SUCCESS:
2720                 case INTR_ROM_MB_FAILED:
2721                 case INTR_MB_SUCCESS:
2722                 case INTR_MB_FAILED:
2723                         qla24xx_mbx_completion(vha, MSW(stat));
2724                         status |= MBX_INTERRUPT;
2725
2726                         break;
2727                 case INTR_ASYNC_EVENT:
2728                         mb[0] = MSW(stat);
2729                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2730                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2731                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2732                         qla2x00_async_event(vha, rsp, mb);
2733                         break;
2734                 case INTR_RSP_QUE_UPDATE:
2735                 case INTR_RSP_QUE_UPDATE_83XX:
2736                         qla24xx_process_response_queue(vha, rsp);
2737                         break;
2738                 case INTR_ATIO_QUE_UPDATE:
2739                         qlt_24xx_process_atio_queue(vha);
2740                         break;
2741                 case INTR_ATIO_RSP_QUE_UPDATE:
2742                         qlt_24xx_process_atio_queue(vha);
2743                         qla24xx_process_response_queue(vha, rsp);
2744                         break;
2745                 default:
2746                         ql_dbg(ql_dbg_async, vha, 0x5051,
2747                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
2748                         break;
2749                 }
2750                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2751         } while (0);
2752         qla2x00_handle_mbx_completion(ha, status);
2753         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2754
2755         return IRQ_HANDLED;
2756 }
2757
2758 /* Interrupt handling helpers. */
2759
2760 struct qla_init_msix_entry {
2761         const char *name;
2762         irq_handler_t handler;
2763 };
2764
2765 static struct qla_init_msix_entry msix_entries[3] = {
2766         { "qla2xxx (default)", qla24xx_msix_default },
2767         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2768         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2769 };
2770
2771 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2772         { "qla2xxx (default)", qla82xx_msix_default },
2773         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2774 };
2775
2776 static struct qla_init_msix_entry qla83xx_msix_entries[3] = {
2777         { "qla2xxx (default)", qla24xx_msix_default },
2778         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2779         { "qla2xxx (atio_q)", qla83xx_msix_atio_q },
2780 };
2781
2782 static void
2783 qla24xx_disable_msix(struct qla_hw_data *ha)
2784 {
2785         int i;
2786         struct qla_msix_entry *qentry;
2787         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2788
2789         for (i = 0; i < ha->msix_count; i++) {
2790                 qentry = &ha->msix_entries[i];
2791                 if (qentry->have_irq)
2792                         free_irq(qentry->vector, qentry->rsp);
2793         }
2794         pci_disable_msix(ha->pdev);
2795         kfree(ha->msix_entries);
2796         ha->msix_entries = NULL;
2797         ha->flags.msix_enabled = 0;
2798         ql_dbg(ql_dbg_init, vha, 0x0042,
2799             "Disabled the MSI.\n");
2800 }
2801
2802 static int
2803 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2804 {
2805 #define MIN_MSIX_COUNT  2
2806         int i, ret;
2807         struct msix_entry *entries;
2808         struct qla_msix_entry *qentry;
2809         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2810
2811         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2812                         GFP_KERNEL);
2813         if (!entries) {
2814                 ql_log(ql_log_warn, vha, 0x00bc,
2815                     "Failed to allocate memory for msix_entry.\n");
2816                 return -ENOMEM;
2817         }
2818
2819         for (i = 0; i < ha->msix_count; i++)
2820                 entries[i].entry = i;
2821
2822         ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2823         if (ret) {
2824                 if (ret < MIN_MSIX_COUNT)
2825                         goto msix_failed;
2826
2827                 ql_log(ql_log_warn, vha, 0x00c6,
2828                     "MSI-X: Failed to enable support "
2829                     "-- %d/%d\n Retry with %d vectors.\n",
2830                     ha->msix_count, ret, ret);
2831                 ha->msix_count = ret;
2832                 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2833                 if (ret) {
2834 msix_failed:
2835                         ql_log(ql_log_fatal, vha, 0x00c7,
2836                             "MSI-X: Failed to enable support, "
2837                             "giving   up -- %d/%d.\n",
2838                             ha->msix_count, ret);
2839                         goto msix_out;
2840                 }
2841                 ha->max_rsp_queues = ha->msix_count - 1;
2842         }
2843         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2844                                 ha->msix_count, GFP_KERNEL);
2845         if (!ha->msix_entries) {
2846                 ql_log(ql_log_fatal, vha, 0x00c8,
2847                     "Failed to allocate memory for ha->msix_entries.\n");
2848                 ret = -ENOMEM;
2849                 goto msix_out;
2850         }
2851         ha->flags.msix_enabled = 1;
2852
2853         for (i = 0; i < ha->msix_count; i++) {
2854                 qentry = &ha->msix_entries[i];
2855                 qentry->vector = entries[i].vector;
2856                 qentry->entry = entries[i].entry;
2857                 qentry->have_irq = 0;
2858                 qentry->rsp = NULL;
2859         }
2860
2861         /* Enable MSI-X vectors for the base queue */
2862         for (i = 0; i < ha->msix_count; i++) {
2863                 qentry = &ha->msix_entries[i];
2864                 if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) {
2865                         ret = request_irq(qentry->vector,
2866                                 qla83xx_msix_entries[i].handler,
2867                                 0, qla83xx_msix_entries[i].name, rsp);
2868                 } else if (IS_QLA82XX(ha)) {
2869                         ret = request_irq(qentry->vector,
2870                                 qla82xx_msix_entries[i].handler,
2871                                 0, qla82xx_msix_entries[i].name, rsp);
2872                 } else {
2873                         ret = request_irq(qentry->vector,
2874                                 msix_entries[i].handler,
2875                                 0, msix_entries[i].name, rsp);
2876                 }
2877                 if (ret) {
2878                         ql_log(ql_log_fatal, vha, 0x00cb,
2879                             "MSI-X: unable to register handler -- %x/%d.\n",
2880                             qentry->vector, ret);
2881                         qla24xx_disable_msix(ha);
2882                         ha->mqenable = 0;
2883                         goto msix_out;
2884                 }
2885                 qentry->have_irq = 1;
2886                 qentry->rsp = rsp;
2887                 rsp->msix = qentry;
2888         }
2889
2890         /* Enable MSI-X vector for response queue update for queue 0 */
2891         if (IS_QLA83XX(ha)) {
2892                 if (ha->msixbase && ha->mqiobase &&
2893                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2894                         ha->mqenable = 1;
2895         } else
2896                 if (ha->mqiobase
2897                     && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2898                         ha->mqenable = 1;
2899         ql_dbg(ql_dbg_multiq, vha, 0xc005,
2900             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
2901             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
2902         ql_dbg(ql_dbg_init, vha, 0x0055,
2903             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
2904             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
2905
2906 msix_out:
2907         kfree(entries);
2908         return ret;
2909 }
2910
2911 int
2912 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2913 {
2914         int ret;
2915         device_reg_t __iomem *reg = ha->iobase;
2916         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2917
2918         /* If possible, enable MSI-X. */
2919         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2920                 !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) && !IS_QLAFX00(ha))
2921                 goto skip_msi;
2922
2923         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2924                 (ha->pdev->subsystem_device == 0x7040 ||
2925                 ha->pdev->subsystem_device == 0x7041 ||
2926                 ha->pdev->subsystem_device == 0x1705)) {
2927                 ql_log(ql_log_warn, vha, 0x0034,
2928                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
2929                         ha->pdev->subsystem_vendor,
2930                         ha->pdev->subsystem_device);
2931                 goto skip_msi;
2932         }
2933
2934         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
2935                 ql_log(ql_log_warn, vha, 0x0035,
2936                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
2937                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
2938                 goto skip_msix;
2939         }
2940
2941         ret = qla24xx_enable_msix(ha, rsp);
2942         if (!ret) {
2943                 ql_dbg(ql_dbg_init, vha, 0x0036,
2944                     "MSI-X: Enabled (0x%X, 0x%X).\n",
2945                     ha->chip_revision, ha->fw_attributes);
2946                 goto clear_risc_ints;
2947         }
2948         ql_log(ql_log_info, vha, 0x0037,
2949             "MSI-X Falling back-to MSI mode -%d.\n", ret);
2950 skip_msix:
2951
2952         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2953             !IS_QLA8001(ha) && !IS_QLA82XX(ha) && !IS_QLAFX00(ha))
2954                 goto skip_msi;
2955
2956         ret = pci_enable_msi(ha->pdev);
2957         if (!ret) {
2958                 ql_dbg(ql_dbg_init, vha, 0x0038,
2959                     "MSI: Enabled.\n");
2960                 ha->flags.msi_enabled = 1;
2961         } else
2962                 ql_log(ql_log_warn, vha, 0x0039,
2963                     "MSI-X; Falling back-to INTa mode -- %d.\n", ret);
2964
2965         /* Skip INTx on ISP82xx. */
2966         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
2967                 return QLA_FUNCTION_FAILED;
2968
2969 skip_msi:
2970
2971         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2972             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
2973             QLA2XXX_DRIVER_NAME, rsp);
2974         if (ret) {
2975                 ql_log(ql_log_warn, vha, 0x003a,
2976                     "Failed to reserve interrupt %d already in use.\n",
2977                     ha->pdev->irq);
2978                 goto fail;
2979         } else if (!ha->flags.msi_enabled) {
2980                 ql_dbg(ql_dbg_init, vha, 0x0125,
2981                     "INTa mode: Enabled.\n");
2982                 ha->flags.mr_intr_valid = 1;
2983         }
2984
2985 clear_risc_ints:
2986
2987         spin_lock_irq(&ha->hardware_lock);
2988         if (!IS_FWI2_CAPABLE(ha))
2989                 WRT_REG_WORD(&reg->isp.semaphore, 0);
2990         spin_unlock_irq(&ha->hardware_lock);
2991
2992 fail:
2993         return ret;
2994 }
2995
2996 void
2997 qla2x00_free_irqs(scsi_qla_host_t *vha)
2998 {
2999         struct qla_hw_data *ha = vha->hw;
3000         struct rsp_que *rsp;
3001
3002         /*
3003          * We need to check that ha->rsp_q_map is valid in case we are called
3004          * from a probe failure context.
3005          */
3006         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3007                 return;
3008         rsp = ha->rsp_q_map[0];
3009
3010         if (ha->flags.msix_enabled)
3011                 qla24xx_disable_msix(ha);
3012         else if (ha->flags.msi_enabled) {
3013                 free_irq(ha->pdev->irq, rsp);
3014                 pci_disable_msi(ha->pdev);
3015         } else
3016                 free_irq(ha->pdev->irq, rsp);
3017 }
3018
3019
3020 int qla25xx_request_irq(struct rsp_que *rsp)
3021 {
3022         struct qla_hw_data *ha = rsp->hw;
3023         struct qla_init_msix_entry *intr = &msix_entries[2];
3024         struct qla_msix_entry *msix = rsp->msix;
3025         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3026         int ret;
3027
3028         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
3029         if (ret) {
3030                 ql_log(ql_log_fatal, vha, 0x00e6,
3031                     "MSI-X: Unable to register handler -- %x/%d.\n",
3032                     msix->vector, ret);
3033                 return ret;
3034         }
3035         msix->have_irq = 1;
3036         msix->rsp = rsp;
3037         return ret;
3038 }