drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 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 <linux/t10-pi.h>
  13 #include <scsi/scsi_tcq.h>
  14 #include <scsi/scsi_bsg_fc.h>
  15 #include <scsi/scsi_eh.h>
  16
  17 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  18 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  19 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  20 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  21         sts_entry_t *);
  22
  23 /**
  24  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  25  * @irq:
  26  * @dev_id: SCSI driver HA context
  27  *
  28  * Called by system whenever the host adapter generates an interrupt.
  29  *
  30  * Returns handled flag.
  31  */
  32 irqreturn_t
  33 qla2100_intr_handler(int irq, void *dev_id)
  34 {
  35         scsi_qla_host_t *vha;
  36         struct qla_hw_data *ha;
  37         struct device_reg_2xxx __iomem *reg;
  38         int             status;
  39         unsigned long   iter;
  40         uint16_t        hccr;
  41         uint16_t        mb[4];
  42         struct rsp_que *rsp;
  43         unsigned long   flags;
  44
  45         rsp = (struct rsp_que *) dev_id;
  46         if (!rsp) {
  47                 ql_log(ql_log_info, NULL, 0x505d,
  48                     "%s: NULL response queue pointer.\n", __func__);
  49                 return (IRQ_NONE);
  50         }
  51
  52         ha = rsp->hw;
  53         reg = &ha->iobase->isp;
  54         status = 0;
  55
  56         spin_lock_irqsave(&ha->hardware_lock, flags);
  57         vha = pci_get_drvdata(ha->pdev);
  58         for (iter = 50; iter--; ) {
  59                 hccr = RD_REG_WORD(&reg->hccr);
  60                 if (qla2x00_check_reg16_for_disconnect(vha, hccr))
  61                         break;
  62                 if (hccr & HCCR_RISC_PAUSE) {
  63                         if (pci_channel_offline(ha->pdev))
  64                                 break;
  65
  66                         /*
  67                          * Issue a "HARD" reset in order for the RISC interrupt
  68                          * bit to be cleared.  Schedule a big hammer to get
  69                          * out of the RISC PAUSED state.
  70                          */
  71                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  72                         RD_REG_WORD(&reg->hccr);
  73
  74                         ha->isp_ops->fw_dump(vha, 1);
  75                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  76                         break;
  77                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  78                         break;
  79
  80                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  81                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  82                         RD_REG_WORD(&reg->hccr);
  83
  84                         /* Get mailbox data. */
  85                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  86                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  87                                 qla2x00_mbx_completion(vha, mb[0]);
  88                                 status |= MBX_INTERRUPT;
  89                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  90                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  91                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  92                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  93                                 qla2x00_async_event(vha, rsp, mb);
  94                         } else {
  95                                 /*EMPTY*/
  96                                 ql_dbg(ql_dbg_async, vha, 0x5025,
  97                                     "Unrecognized interrupt type (%d).\n",
  98                                     mb[0]);
  99                         }
 100                         /* Release mailbox registers. */
 101                         WRT_REG_WORD(&reg->semaphore, 0);
 102                         RD_REG_WORD(&reg->semaphore);
 103                 } else {
 104                         qla2x00_process_response_queue(rsp);
 105
 106                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 107                         RD_REG_WORD(&reg->hccr);
 108                 }
 109         }
 110         qla2x00_handle_mbx_completion(ha, status);
 111         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 112
 113         return (IRQ_HANDLED);
 114 }
 115
 116 bool
 117 qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
 118 {
 119         /* Check for PCI disconnection */
 120         if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
 121                 if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
 122                     !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
 123                     !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
 124                         /*
 125                          * Schedule this (only once) on the default system
 126                          * workqueue so that all the adapter workqueues and the
 127                          * DPC thread can be shutdown cleanly.
 128                          */
 129                         schedule_work(&vha->hw->board_disable);
 130                 }
 131                 return true;
 132         } else
 133                 return false;
 134 }
 135
 136 bool
 137 qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
 138 {
 139         return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
 140 }
 141
 142 /**
 143  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 144  * @irq:
 145  * @dev_id: SCSI driver HA context
 146  *
 147  * Called by system whenever the host adapter generates an interrupt.
 148  *
 149  * Returns handled flag.
 150  */
 151 irqreturn_t
 152 qla2300_intr_handler(int irq, void *dev_id)
 153 {
 154         scsi_qla_host_t *vha;
 155         struct device_reg_2xxx __iomem *reg;
 156         int             status;
 157         unsigned long   iter;
 158         uint32_t        stat;
 159         uint16_t        hccr;
 160         uint16_t        mb[4];
 161         struct rsp_que *rsp;
 162         struct qla_hw_data *ha;
 163         unsigned long   flags;
 164
 165         rsp = (struct rsp_que *) dev_id;
 166         if (!rsp) {
 167                 ql_log(ql_log_info, NULL, 0x5058,
 168                     "%s: NULL response queue pointer.\n", __func__);
 169                 return (IRQ_NONE);
 170         }
 171
 172         ha = rsp->hw;
 173         reg = &ha->iobase->isp;
 174         status = 0;
 175
 176         spin_lock_irqsave(&ha->hardware_lock, flags);
 177         vha = pci_get_drvdata(ha->pdev);
 178         for (iter = 50; iter--; ) {
 179                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 180                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
 181                         break;
 182                 if (stat & HSR_RISC_PAUSED) {
 183                         if (unlikely(pci_channel_offline(ha->pdev)))
 184                                 break;
 185
 186                         hccr = RD_REG_WORD(&reg->hccr);
 187
 188                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 189                                 ql_log(ql_log_warn, vha, 0x5026,
 190                                     "Parity error -- HCCR=%x, Dumping "
 191                                     "firmware.\n", hccr);
 192                         else
 193                                 ql_log(ql_log_warn, vha, 0x5027,
 194                                     "RISC paused -- HCCR=%x, Dumping "
 195                                     "firmware.\n", hccr);
 196
 197                         /*
 198                          * Issue a "HARD" reset in order for the RISC
 199                          * interrupt bit to be cleared.  Schedule a big
 200                          * hammer to get out of the RISC PAUSED state.
 201                          */
 202                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 203                         RD_REG_WORD(&reg->hccr);
 204
 205                         ha->isp_ops->fw_dump(vha, 1);
 206                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 207                         break;
 208                 } else if ((stat & HSR_RISC_INT) == 0)
 209                         break;
 210
 211                 switch (stat & 0xff) {
 212                 case 0x1:
 213                 case 0x2:
 214                 case 0x10:
 215                 case 0x11:
 216                         qla2x00_mbx_completion(vha, MSW(stat));
 217                         status |= MBX_INTERRUPT;
 218
 219                         /* Release mailbox registers. */
 220                         WRT_REG_WORD(&reg->semaphore, 0);
 221                         break;
 222                 case 0x12:
 223                         mb[0] = MSW(stat);
 224                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 225                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 226                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 227                         qla2x00_async_event(vha, rsp, mb);
 228                         break;
 229                 case 0x13:
 230                         qla2x00_process_response_queue(rsp);
 231                         break;
 232                 case 0x15:
 233                         mb[0] = MBA_CMPLT_1_16BIT;
 234                         mb[1] = MSW(stat);
 235                         qla2x00_async_event(vha, rsp, mb);
 236                         break;
 237                 case 0x16:
 238                         mb[0] = MBA_SCSI_COMPLETION;
 239                         mb[1] = MSW(stat);
 240                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 241                         qla2x00_async_event(vha, rsp, mb);
 242                         break;
 243                 default:
 244                         ql_dbg(ql_dbg_async, vha, 0x5028,
 245                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 246                         break;
 247                 }
 248                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 249                 RD_REG_WORD_RELAXED(&reg->hccr);
 250         }
 251         qla2x00_handle_mbx_completion(ha, status);
 252         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 253
 254         return (IRQ_HANDLED);
 255 }
 256
 257 /**
 258  * qla2x00_mbx_completion() - Process mailbox command completions.
 259  * @ha: SCSI driver HA context
 260  * @mb0: Mailbox0 register
 261  */
 262 static void
 263 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 264 {
 265         uint16_t        cnt;
 266         uint32_t        mboxes;
 267         uint16_t __iomem *wptr;
 268         struct qla_hw_data *ha = vha->hw;
 269         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 270
 271         /* Read all mbox registers? */
 272         mboxes = (1 << ha->mbx_count) - 1;
 273         if (!ha->mcp)
 274                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
 275         else
 276                 mboxes = ha->mcp->in_mb;
 277
 278         /* Load return mailbox registers. */
 279         ha->flags.mbox_int = 1;
 280         ha->mailbox_out[0] = mb0;
 281         mboxes >>= 1;
 282         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 283
 284         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 285                 if (IS_QLA2200(ha) && cnt == 8)
 286                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 287                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 288                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 289                 else if (mboxes & BIT_0)
 290                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 291
 292                 wptr++;
 293                 mboxes >>= 1;
 294         }
 295 }
 296
 297 static void
 298 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 299 {
 300         static char *event[] =
 301                 { "Complete", "Request Notification", "Time Extension" };
 302         int rval;
 303         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 304         struct device_reg_82xx __iomem *reg82 = &vha->hw->iobase->isp82;
 305         uint16_t __iomem *wptr;
 306         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 307
 308         /* Seed data -- mailbox1 -> mailbox7. */
 309         if (IS_QLA81XX(vha->hw) || IS_QLA83XX(vha->hw))
 310                 wptr = (uint16_t __iomem *)&reg24->mailbox1;
 311         else if (IS_QLA8044(vha->hw))
 312                 wptr = (uint16_t __iomem *)&reg82->mailbox_out[1];
 313         else
 314                 return;
 315
 316         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 317                 mb[cnt] = RD_REG_WORD(wptr);
 318
 319         ql_dbg(ql_dbg_async, vha, 0x5021,
 320             "Inter-Driver Communication %s -- "
 321             "%04x %04x %04x %04x %04x %04x %04x.\n",
 322             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 323             mb[4], mb[5], mb[6]);
 324         switch (aen) {
 325         /* Handle IDC Error completion case. */
 326         case MBA_IDC_COMPLETE:
 327                 if (mb[1] >> 15) {
 328                         vha->hw->flags.idc_compl_status = 1;
 329                         if (vha->hw->notify_dcbx_comp && !vha->vp_idx)
 330                                 complete(&vha->hw->dcbx_comp);
 331                 }
 332                 break;
 333
 334         case MBA_IDC_NOTIFY:
 335                 /* Acknowledgement needed? [Notify && non-zero timeout]. */
 336                 timeout = (descr >> 8) & 0xf;
 337                 ql_dbg(ql_dbg_async, vha, 0x5022,
 338                     "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 339                     vha->host_no, event[aen & 0xff], timeout);
 340
 341                 if (!timeout)
 342                         return;
 343                 rval = qla2x00_post_idc_ack_work(vha, mb);
 344                 if (rval != QLA_SUCCESS)
 345                         ql_log(ql_log_warn, vha, 0x5023,
 346                             "IDC failed to post ACK.\n");
 347                 break;
 348         case MBA_IDC_TIME_EXT:
 349                 vha->hw->idc_extend_tmo = descr;
 350                 ql_dbg(ql_dbg_async, vha, 0x5087,
 351                     "%lu Inter-Driver Communication %s -- "
 352                     "Extend timeout by=%d.\n",
 353                     vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
 354                 break;
 355         }
 356 }
 357
 358 #define LS_UNKNOWN      2
 359 const char *
 360 qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
 361 {
 362         static const char *const link_speeds[] = {
 363                 "1", "2", "?", "4", "8", "16", "32", "10"
 364         };
 365 #define QLA_LAST_SPEED  7
 366
 367         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 368                 return link_speeds[0];
 369         else if (speed == 0x13)
 370                 return link_speeds[QLA_LAST_SPEED];
 371         else if (speed < QLA_LAST_SPEED)
 372                 return link_speeds[speed];
 373         else
 374                 return link_speeds[LS_UNKNOWN];
 375 }
 376
 377 static void
 378 qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 379 {
 380         struct qla_hw_data *ha = vha->hw;
 381
 382         /*
 383          * 8200 AEN Interpretation:
 384          * mb[0] = AEN code
 385          * mb[1] = AEN Reason code
 386          * mb[2] = LSW of Peg-Halt Status-1 Register
 387          * mb[6] = MSW of Peg-Halt Status-1 Register
 388          * mb[3] = LSW of Peg-Halt Status-2 register
 389          * mb[7] = MSW of Peg-Halt Status-2 register
 390          * mb[4] = IDC Device-State Register value
 391          * mb[5] = IDC Driver-Presence Register value
 392          */
 393         ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
 394             "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
 395             mb[0], mb[1], mb[2], mb[6]);
 396         ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
 397             "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
 398             "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);
 399
 400         if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
 401                                 IDC_HEARTBEAT_FAILURE)) {
 402                 ha->flags.nic_core_hung = 1;
 403                 ql_log(ql_log_warn, vha, 0x5060,
 404                     "83XX: F/W Error Reported: Check if reset required.\n");
 405
 406                 if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
 407                         uint32_t protocol_engine_id, fw_err_code, err_level;
 408
 409                         /*
 410                          * IDC_PEG_HALT_STATUS_CHANGE interpretation:
 411                          *  - PEG-Halt Status-1 Register:
 412                          *      (LSW = mb[2], MSW = mb[6])
 413                          *      Bits 0-7   = protocol-engine ID
 414                          *      Bits 8-28  = f/w error code
 415                          *      Bits 29-31 = Error-level
 416                          *          Error-level 0x1 = Non-Fatal error
 417                          *          Error-level 0x2 = Recoverable Fatal error
 418                          *          Error-level 0x4 = UnRecoverable Fatal error
 419                          *  - PEG-Halt Status-2 Register:
 420                          *      (LSW = mb[3], MSW = mb[7])
 421                          */
 422                         protocol_engine_id = (mb[2] & 0xff);
 423                         fw_err_code = (((mb[2] & 0xff00) >> 8) |
 424                             ((mb[6] & 0x1fff) << 8));
 425                         err_level = ((mb[6] & 0xe000) >> 13);
 426                         ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
 427                             "Register: protocol_engine_id=0x%x "
 428                             "fw_err_code=0x%x err_level=0x%x.\n",
 429                             protocol_engine_id, fw_err_code, err_level);
 430                         ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
 431                             "Register: 0x%x%x.\n", mb[7], mb[3]);
 432                         if (err_level == ERR_LEVEL_NON_FATAL) {
 433                                 ql_log(ql_log_warn, vha, 0x5063,
 434                                     "Not a fatal error, f/w has recovered "
 435                                     "iteself.\n");
 436                         } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
 437                                 ql_log(ql_log_fatal, vha, 0x5064,
 438                                     "Recoverable Fatal error: Chip reset "
 439                                     "required.\n");
 440                                 qla83xx_schedule_work(vha,
 441                                     QLA83XX_NIC_CORE_RESET);
 442                         } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
 443                                 ql_log(ql_log_fatal, vha, 0x5065,
 444                                     "Unrecoverable Fatal error: Set FAILED "
 445                                     "state, reboot required.\n");
 446                                 qla83xx_schedule_work(vha,
 447                                     QLA83XX_NIC_CORE_UNRECOVERABLE);
 448                         }
 449                 }
 450
 451                 if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
 452                         uint16_t peg_fw_state, nw_interface_link_up;
 453                         uint16_t nw_interface_signal_detect, sfp_status;
 454                         uint16_t htbt_counter, htbt_monitor_enable;
 455                         uint16_t sfp_additonal_info, sfp_multirate;
 456                         uint16_t sfp_tx_fault, link_speed, dcbx_status;
 457
 458                         /*
 459                          * IDC_NIC_FW_REPORTED_FAILURE interpretation:
 460                          *  - PEG-to-FC Status Register:
 461                          *      (LSW = mb[2], MSW = mb[6])
 462                          *      Bits 0-7   = Peg-Firmware state
 463                          *      Bit 8      = N/W Interface Link-up
 464                          *      Bit 9      = N/W Interface signal detected
 465                          *      Bits 10-11 = SFP Status
 466                          *        SFP Status 0x0 = SFP+ transceiver not expected
 467                          *        SFP Status 0x1 = SFP+ transceiver not present
 468                          *        SFP Status 0x2 = SFP+ transceiver invalid
 469                          *        SFP Status 0x3 = SFP+ transceiver present and
 470                          *        valid
 471                          *      Bits 12-14 = Heartbeat Counter
 472                          *      Bit 15     = Heartbeat Monitor Enable
 473                          *      Bits 16-17 = SFP Additional Info
 474                          *        SFP info 0x0 = Unregocnized transceiver for
 475                          *        Ethernet
 476                          *        SFP info 0x1 = SFP+ brand validation failed
 477                          *        SFP info 0x2 = SFP+ speed validation failed
 478                          *        SFP info 0x3 = SFP+ access error
 479                          *      Bit 18     = SFP Multirate
 480                          *      Bit 19     = SFP Tx Fault
 481                          *      Bits 20-22 = Link Speed
 482                          *      Bits 23-27 = Reserved
 483                          *      Bits 28-30 = DCBX Status
 484                          *        DCBX Status 0x0 = DCBX Disabled
 485                          *        DCBX Status 0x1 = DCBX Enabled
 486                          *        DCBX Status 0x2 = DCBX Exchange error
 487                          *      Bit 31     = Reserved
 488                          */
 489                         peg_fw_state = (mb[2] & 0x00ff);
 490                         nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
 491                         nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
 492                         sfp_status = ((mb[2] & 0x0c00) >> 10);
 493                         htbt_counter = ((mb[2] & 0x7000) >> 12);
 494                         htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
 495                         sfp_additonal_info = (mb[6] & 0x0003);
 496                         sfp_multirate = ((mb[6] & 0x0004) >> 2);
 497                         sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
 498                         link_speed = ((mb[6] & 0x0070) >> 4);
 499                         dcbx_status = ((mb[6] & 0x7000) >> 12);
 500
 501                         ql_log(ql_log_warn, vha, 0x5066,
 502                             "Peg-to-Fc Status Register:\n"
 503                             "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
 504                             "nw_interface_signal_detect=0x%x"
 505                             "\nsfp_statis=0x%x.\n ", peg_fw_state,
 506                             nw_interface_link_up, nw_interface_signal_detect,
 507                             sfp_status);
 508                         ql_log(ql_log_warn, vha, 0x5067,
 509                             "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
 510                             "sfp_additonal_info=0x%x, sfp_multirate=0x%x.\n ",
 511                             htbt_counter, htbt_monitor_enable,
 512                             sfp_additonal_info, sfp_multirate);
 513                         ql_log(ql_log_warn, vha, 0x5068,
 514                             "sfp_tx_fault=0x%x, link_state=0x%x, "
 515                             "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
 516                             dcbx_status);
 517
 518                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 519                 }
 520
 521                 if (mb[1] & IDC_HEARTBEAT_FAILURE) {
 522                         ql_log(ql_log_warn, vha, 0x5069,
 523                             "Heartbeat Failure encountered, chip reset "
 524                             "required.\n");
 525
 526                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 527                 }
 528         }
 529
 530         if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
 531                 ql_log(ql_log_info, vha, 0x506a,
 532                     "IDC Device-State changed = 0x%x.\n", mb[4]);
 533                 if (ha->flags.nic_core_reset_owner)
 534                         return;
 535                 qla83xx_schedule_work(vha, MBA_IDC_AEN);
 536         }
 537 }
 538
 539 int
 540 qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
 541 {
 542         struct qla_hw_data *ha = vha->hw;
 543         scsi_qla_host_t *vp;
 544         uint32_t vp_did;
 545         unsigned long flags;
 546         int ret = 0;
 547
 548         if (!ha->num_vhosts)
 549                 return ret;
 550
 551         spin_lock_irqsave(&ha->vport_slock, flags);
 552         list_for_each_entry(vp, &ha->vp_list, list) {
 553                 vp_did = vp->d_id.b24;
 554                 if (vp_did == rscn_entry) {
 555                         ret = 1;
 556                         break;
 557                 }
 558         }
 559         spin_unlock_irqrestore(&ha->vport_slock, flags);
 560
 561         return ret;
 562 }
 563
 564 static inline fc_port_t *
 565 qla2x00_find_fcport_by_loopid(scsi_qla_host_t *vha, uint16_t loop_id)
 566 {
 567         fc_port_t *fcport;
 568
 569         list_for_each_entry(fcport, &vha->vp_fcports, list)
 570                 if (fcport->loop_id == loop_id)
 571                         return fcport;
 572         return NULL;
 573 }
 574
 575 /**
 576  * qla2x00_async_event() - Process aynchronous events.
 577  * @ha: SCSI driver HA context
 578  * @mb: Mailbox registers (0 - 3)
 579  */
 580 void
 581 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 582 {
 583         uint16_t        handle_cnt;
 584         uint16_t        cnt, mbx;
 585         uint32_t        handles[5];
 586         struct qla_hw_data *ha = vha->hw;
 587         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 588         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 589         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 590         uint32_t        rscn_entry, host_pid;
 591         unsigned long   flags;
 592         fc_port_t       *fcport = NULL;
 593
 594         /* Setup to process RIO completion. */
 595         handle_cnt = 0;
 596         if (IS_CNA_CAPABLE(ha))
 597                 goto skip_rio;
 598         switch (mb[0]) {
 599         case MBA_SCSI_COMPLETION:
 600                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 601                 handle_cnt = 1;
 602                 break;
 603         case MBA_CMPLT_1_16BIT:
 604                 handles[0] = mb[1];
 605                 handle_cnt = 1;
 606                 mb[0] = MBA_SCSI_COMPLETION;
 607                 break;
 608         case MBA_CMPLT_2_16BIT:
 609                 handles[0] = mb[1];
 610                 handles[1] = mb[2];
 611                 handle_cnt = 2;
 612                 mb[0] = MBA_SCSI_COMPLETION;
 613                 break;
 614         case MBA_CMPLT_3_16BIT:
 615                 handles[0] = mb[1];
 616                 handles[1] = mb[2];
 617                 handles[2] = mb[3];
 618                 handle_cnt = 3;
 619                 mb[0] = MBA_SCSI_COMPLETION;
 620                 break;
 621         case MBA_CMPLT_4_16BIT:
 622                 handles[0] = mb[1];
 623                 handles[1] = mb[2];
 624                 handles[2] = mb[3];
 625                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 626                 handle_cnt = 4;
 627                 mb[0] = MBA_SCSI_COMPLETION;
 628                 break;
 629         case MBA_CMPLT_5_16BIT:
 630                 handles[0] = mb[1];
 631                 handles[1] = mb[2];
 632                 handles[2] = mb[3];
 633                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 634                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 635                 handle_cnt = 5;
 636                 mb[0] = MBA_SCSI_COMPLETION;
 637                 break;
 638         case MBA_CMPLT_2_32BIT:
 639                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 640                 handles[1] = le32_to_cpu(
 641                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 642                     RD_MAILBOX_REG(ha, reg, 6));
 643                 handle_cnt = 2;
 644                 mb[0] = MBA_SCSI_COMPLETION;
 645                 break;
 646         default:
 647                 break;
 648         }
 649 skip_rio:
 650         switch (mb[0]) {
 651         case MBA_SCSI_COMPLETION:       /* Fast Post */
 652                 if (!vha->flags.online)
 653                         break;
 654
 655                 for (cnt = 0; cnt < handle_cnt; cnt++)
 656                         qla2x00_process_completed_request(vha, rsp->req,
 657                                 handles[cnt]);
 658                 break;
 659
 660         case MBA_RESET:                 /* Reset */
 661                 ql_dbg(ql_dbg_async, vha, 0x5002,
 662                     "Asynchronous RESET.\n");
 663
 664                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 665                 break;
 666
 667         case MBA_SYSTEM_ERR:            /* System Error */
 668                 mbx = (IS_QLA81XX(ha) || IS_QLA83XX(ha) || IS_QLA27XX(ha)) ?
 669                         RD_REG_WORD(&reg24->mailbox7) : 0;
 670                 ql_log(ql_log_warn, vha, 0x5003,
 671                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 672                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 673
 674                 ha->isp_ops->fw_dump(vha, 1);
 675
 676                 if (IS_FWI2_CAPABLE(ha)) {
 677                         if (mb[1] == 0 && mb[2] == 0) {
 678                                 ql_log(ql_log_fatal, vha, 0x5004,
 679                                     "Unrecoverable Hardware Error: adapter "
 680                                     "marked OFFLINE!\n");
 681                                 vha->flags.online = 0;
 682                                 vha->device_flags |= DFLG_DEV_FAILED;
 683                         } else {
 684                                 /* Check to see if MPI timeout occurred */
 685                                 if ((mbx & MBX_3) && (ha->port_no == 0))
 686                                         set_bit(MPI_RESET_NEEDED,
 687                                             &vha->dpc_flags);
 688
 689                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 690                         }
 691                 } else if (mb[1] == 0) {
 692                         ql_log(ql_log_fatal, vha, 0x5005,
 693                             "Unrecoverable Hardware Error: adapter marked "
 694                             "OFFLINE!\n");
 695                         vha->flags.online = 0;
 696                         vha->device_flags |= DFLG_DEV_FAILED;
 697                 } else
 698                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 699                 break;
 700
 701         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 702                 ql_log(ql_log_warn, vha, 0x5006,
 703                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 704
 705                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 706                 break;
 707
 708         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 709                 ql_log(ql_log_warn, vha, 0x5007,
 710                     "ISP Response Transfer Error (%x).\n", mb[1]);
 711
 712                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 713                 break;
 714
 715         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 716                 ql_dbg(ql_dbg_async, vha, 0x5008,
 717                     "Asynchronous WAKEUP_THRES (%x).\n", mb[1]);
 718                 break;
 719
 720         case MBA_LOOP_INIT_ERR:
 721                 ql_log(ql_log_warn, vha, 0x5090,
 722                     "LOOP INIT ERROR (%x).\n", mb[1]);
 723                 ha->isp_ops->fw_dump(vha, 1);
 724                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 725                 break;
 726
 727         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 728                 ql_dbg(ql_dbg_async, vha, 0x5009,
 729                     "LIP occurred (%x).\n", mb[1]);
 730
 731                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 732                         atomic_set(&vha->loop_state, LOOP_DOWN);
 733                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 734                         qla2x00_mark_all_devices_lost(vha, 1);
 735                 }
 736
 737                 if (vha->vp_idx) {
 738                         atomic_set(&vha->vp_state, VP_FAILED);
 739                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 740                 }
 741
 742                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 743                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 744
 745                 vha->flags.management_server_logged_in = 0;
 746                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 747                 break;
 748
 749         case MBA_LOOP_UP:               /* Loop Up Event */
 750                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 751                         ha->link_data_rate = PORT_SPEED_1GB;
 752                 else
 753                         ha->link_data_rate = mb[1];
 754
 755                 ql_log(ql_log_info, vha, 0x500a,
 756                     "LOOP UP detected (%s Gbps).\n",
 757                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 758
 759                 vha->flags.management_server_logged_in = 0;
 760                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 761                 break;
 762
 763         case MBA_LOOP_DOWN:             /* Loop Down Event */
 764                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 765                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 766                 mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
 767                         : mbx;
 768                 ql_log(ql_log_info, vha, 0x500b,
 769                     "LOOP DOWN detected (%x %x %x %x).\n",
 770                     mb[1], mb[2], mb[3], mbx);
 771
 772                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 773                         atomic_set(&vha->loop_state, LOOP_DOWN);
 774                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 775                         /*
 776                          * In case of loop down, restore WWPN from
 777                          * NVRAM in case of FA-WWPN capable ISP
 778                          * Restore for Physical Port only
 779                          */
 780                         if (!vha->vp_idx) {
 781                                 if (ha->flags.fawwpn_enabled) {
 782                                         void *wwpn = ha->init_cb->port_name;
 783                                         memcpy(vha->port_name, wwpn, WWN_SIZE);
 784                                         fc_host_port_name(vha->host) =
 785                                             wwn_to_u64(vha->port_name);
 786                                         ql_dbg(ql_dbg_init + ql_dbg_verbose,
 787                                             vha, 0x0144, "LOOP DOWN detected,"
 788                                             "restore WWPN %016llx\n",
 789                                             wwn_to_u64(vha->port_name));
 790                                 }
 791
 792                                 clear_bit(VP_CONFIG_OK, &vha->vp_flags);
 793                         }
 794
 795                         vha->device_flags |= DFLG_NO_CABLE;
 796                         qla2x00_mark_all_devices_lost(vha, 1);
 797                 }
 798
 799                 if (vha->vp_idx) {
 800                         atomic_set(&vha->vp_state, VP_FAILED);
 801                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 802                 }
 803
 804                 vha->flags.management_server_logged_in = 0;
 805                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 806                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 807                 break;
 808
 809         case MBA_LIP_RESET:             /* LIP reset occurred */
 810                 ql_dbg(ql_dbg_async, vha, 0x500c,
 811                     "LIP reset occurred (%x).\n", mb[1]);
 812
 813                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 814                         atomic_set(&vha->loop_state, LOOP_DOWN);
 815                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 816                         qla2x00_mark_all_devices_lost(vha, 1);
 817                 }
 818
 819                 if (vha->vp_idx) {
 820                         atomic_set(&vha->vp_state, VP_FAILED);
 821                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 822                 }
 823
 824                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 825
 826                 ha->operating_mode = LOOP;
 827                 vha->flags.management_server_logged_in = 0;
 828                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 829                 break;
 830
 831         /* case MBA_DCBX_COMPLETE: */
 832         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 833                 if (IS_QLA2100(ha))
 834                         break;
 835
 836                 if (IS_CNA_CAPABLE(ha)) {
 837                         ql_dbg(ql_dbg_async, vha, 0x500d,
 838                             "DCBX Completed -- %04x %04x %04x.\n",
 839                             mb[1], mb[2], mb[3]);
 840                         if (ha->notify_dcbx_comp && !vha->vp_idx)
 841                                 complete(&ha->dcbx_comp);
 842
 843                 } else
 844                         ql_dbg(ql_dbg_async, vha, 0x500e,
 845                             "Asynchronous P2P MODE received.\n");
 846
 847                 /*
 848                  * Until there's a transition from loop down to loop up, treat
 849                  * this as loop down only.
 850                  */
 851                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 852                         atomic_set(&vha->loop_state, LOOP_DOWN);
 853                         if (!atomic_read(&vha->loop_down_timer))
 854                                 atomic_set(&vha->loop_down_timer,
 855                                     LOOP_DOWN_TIME);
 856                         qla2x00_mark_all_devices_lost(vha, 1);
 857                 }
 858
 859                 if (vha->vp_idx) {
 860                         atomic_set(&vha->vp_state, VP_FAILED);
 861                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 862                 }
 863
 864                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 865                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 866
 867                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 868                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 869
 870                 ha->flags.gpsc_supported = 1;
 871                 vha->flags.management_server_logged_in = 0;
 872                 break;
 873
 874         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 875                 if (IS_QLA2100(ha))
 876                         break;
 877
 878                 ql_dbg(ql_dbg_async, vha, 0x500f,
 879                     "Configuration change detected: value=%x.\n", mb[1]);
 880
 881                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 882                         atomic_set(&vha->loop_state, LOOP_DOWN);
 883                         if (!atomic_read(&vha->loop_down_timer))
 884                                 atomic_set(&vha->loop_down_timer,
 885                                     LOOP_DOWN_TIME);
 886                         qla2x00_mark_all_devices_lost(vha, 1);
 887                 }
 888
 889                 if (vha->vp_idx) {
 890                         atomic_set(&vha->vp_state, VP_FAILED);
 891                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 892                 }
 893
 894                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 895                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 896                 break;
 897
 898         case MBA_PORT_UPDATE:           /* Port database update */
 899                 /*
 900                  * Handle only global and vn-port update events
 901                  *
 902                  * Relevant inputs:
 903                  * mb[1] = N_Port handle of changed port
 904                  * OR 0xffff for global event
 905                  * mb[2] = New login state
 906                  * 7 = Port logged out
 907                  * mb[3] = LSB is vp_idx, 0xff = all vps
 908                  *
 909                  * Skip processing if:
 910                  *       Event is global, vp_idx is NOT all vps,
 911                  *           vp_idx does not match
 912                  *       Event is not global, vp_idx does not match
 913                  */
 914                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 915                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 916                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 917                         break;
 918
 919                 if (mb[2] == 0x7) {
 920                         ql_dbg(ql_dbg_async, vha, 0x5010,
 921                             "Port %s %04x %04x %04x.\n",
 922                             mb[1] == 0xffff ? "unavailable" : "logout",
 923                             mb[1], mb[2], mb[3]);
 924
 925                         if (mb[1] == 0xffff)
 926                                 goto global_port_update;
 927
 928                         /* Port logout */
 929                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
 930                         if (!fcport)
 931                                 break;
 932                         if (atomic_read(&fcport->state) != FCS_ONLINE)
 933                                 break;
 934                         ql_dbg(ql_dbg_async, vha, 0x508a,
 935                             "Marking port lost loopid=%04x portid=%06x.\n",
 936                             fcport->loop_id, fcport->d_id.b24);
 937                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
 938                         break;
 939
 940 global_port_update:
 941                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 942                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 943                                 atomic_set(&vha->loop_down_timer,
 944                                     LOOP_DOWN_TIME);
 945                                 vha->device_flags |= DFLG_NO_CABLE;
 946                                 qla2x00_mark_all_devices_lost(vha, 1);
 947                         }
 948
 949                         if (vha->vp_idx) {
 950                                 atomic_set(&vha->vp_state, VP_FAILED);
 951                                 fc_vport_set_state(vha->fc_vport,
 952                                     FC_VPORT_FAILED);
 953                                 qla2x00_mark_all_devices_lost(vha, 1);
 954                         }
 955
 956                         vha->flags.management_server_logged_in = 0;
 957                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 958                         break;
 959                 }
 960
 961                 /*
 962                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 963                  * event etc. earlier indicating loop is down) then process
 964                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 965                  */
 966                 atomic_set(&vha->loop_down_timer, 0);
 967                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
 968                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
 969                         ql_dbg(ql_dbg_async, vha, 0x5011,
 970                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
 971                             mb[1], mb[2], mb[3]);
 972
 973                         qlt_async_event(mb[0], vha, mb);
 974                         break;
 975                 }
 976
 977                 ql_dbg(ql_dbg_async, vha, 0x5012,
 978                     "Port database changed %04x %04x %04x.\n",
 979                     mb[1], mb[2], mb[3]);
 980
 981                 /*
 982                  * Mark all devices as missing so we will login again.
 983                  */
 984                 atomic_set(&vha->loop_state, LOOP_UP);
 985
 986                 qla2x00_mark_all_devices_lost(vha, 1);
 987
 988                 if (vha->vp_idx == 0 && !qla_ini_mode_enabled(vha))
 989                         set_bit(SCR_PENDING, &vha->dpc_flags);
 990
 991                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 992                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 993                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
 994
 995                 qlt_async_event(mb[0], vha, mb);
 996                 break;
 997
 998         case MBA_RSCN_UPDATE:           /* State Change Registration */
 999                 /* Check if the Vport has issued a SCR */
1000                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1001                         break;
1002                 /* Only handle SCNs for our Vport index. */
1003                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1004                         break;
1005
1006                 ql_dbg(ql_dbg_async, vha, 0x5013,
1007                     "RSCN database changed -- %04x %04x %04x.\n",
1008                     mb[1], mb[2], mb[3]);
1009
1010                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1011                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1012                                 | vha->d_id.b.al_pa;
1013                 if (rscn_entry == host_pid) {
1014                         ql_dbg(ql_dbg_async, vha, 0x5014,
1015                             "Ignoring RSCN update to local host "
1016                             "port ID (%06x).\n", host_pid);
1017                         break;
1018                 }
1019
1020                 /* Ignore reserved bits from RSCN-payload. */
1021                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1022
1023                 /* Skip RSCNs for virtual ports on the same physical port */
1024                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1025                         break;
1026
1027                 /*
1028                  * Search for the rport related to this RSCN entry and mark it
1029                  * as lost.
1030                  */
1031                 list_for_each_entry(fcport, &vha->vp_fcports, list) {
1032                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1033                                 continue;
1034                         if (fcport->d_id.b24 == rscn_entry) {
1035                                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
1036                                 break;
1037                         }
1038                 }
1039
1040                 atomic_set(&vha->loop_down_timer, 0);
1041                 vha->flags.management_server_logged_in = 0;
1042
1043                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1044                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
1045                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1046                 break;
1047
1048         /* case MBA_RIO_RESPONSE: */
1049         case MBA_ZIO_RESPONSE:
1050                 ql_dbg(ql_dbg_async, vha, 0x5015,
1051                     "[R|Z]IO update completion.\n");
1052
1053                 if (IS_FWI2_CAPABLE(ha))
1054                         qla24xx_process_response_queue(vha, rsp);
1055                 else
1056                         qla2x00_process_response_queue(rsp);
1057                 break;
1058
1059         case MBA_DISCARD_RND_FRAME:
1060                 ql_dbg(ql_dbg_async, vha, 0x5016,
1061                     "Discard RND Frame -- %04x %04x %04x.\n",
1062                     mb[1], mb[2], mb[3]);
1063                 break;
1064
1065         case MBA_TRACE_NOTIFICATION:
1066                 ql_dbg(ql_dbg_async, vha, 0x5017,
1067                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1068                 break;
1069
1070         case MBA_ISP84XX_ALERT:
1071                 ql_dbg(ql_dbg_async, vha, 0x5018,
1072                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1073                     mb[1], mb[2], mb[3]);
1074
1075                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1076                 switch (mb[1]) {
1077                 case A84_PANIC_RECOVERY:
1078                         ql_log(ql_log_info, vha, 0x5019,
1079                             "Alert 84XX: panic recovery %04x %04x.\n",
1080                             mb[2], mb[3]);
1081                         break;
1082                 case A84_OP_LOGIN_COMPLETE:
1083                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1084                         ql_log(ql_log_info, vha, 0x501a,
1085                             "Alert 84XX: firmware version %x.\n",
1086                             ha->cs84xx->op_fw_version);
1087                         break;
1088                 case A84_DIAG_LOGIN_COMPLETE:
1089                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1090                         ql_log(ql_log_info, vha, 0x501b,
1091                             "Alert 84XX: diagnostic firmware version %x.\n",
1092                             ha->cs84xx->diag_fw_version);
1093                         break;
1094                 case A84_GOLD_LOGIN_COMPLETE:
1095                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1096                         ha->cs84xx->fw_update = 1;
1097                         ql_log(ql_log_info, vha, 0x501c,
1098                             "Alert 84XX: gold firmware version %x.\n",
1099                             ha->cs84xx->gold_fw_version);
1100                         break;
1101                 default:
1102                         ql_log(ql_log_warn, vha, 0x501d,
1103                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1104                             mb[1], mb[2], mb[3]);
1105                 }
1106                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1107                 break;
1108         case MBA_DCBX_START:
1109                 ql_dbg(ql_dbg_async, vha, 0x501e,
1110                     "DCBX Started -- %04x %04x %04x.\n",
1111                     mb[1], mb[2], mb[3]);
1112                 break;
1113         case MBA_DCBX_PARAM_UPDATE:
1114                 ql_dbg(ql_dbg_async, vha, 0x501f,
1115                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1116                     mb[1], mb[2], mb[3]);
1117                 break;
1118         case MBA_FCF_CONF_ERR:
1119                 ql_dbg(ql_dbg_async, vha, 0x5020,
1120                     "FCF Configuration Error -- %04x %04x %04x.\n",
1121                     mb[1], mb[2], mb[3]);
1122                 break;
1123         case MBA_IDC_NOTIFY:
1124                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1125                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1126                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1127                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1128                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1129                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1130                                 /*
1131                                  * Extend loop down timer since port is active.
1132                                  */
1133                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1134                                         atomic_set(&vha->loop_down_timer,
1135                                             LOOP_DOWN_TIME);
1136                                 qla2xxx_wake_dpc(vha);
1137                         }
1138                 }
1139         case MBA_IDC_COMPLETE:
1140                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1141                         complete(&ha->lb_portup_comp);
1142                 /* Fallthru */
1143         case MBA_IDC_TIME_EXT:
1144                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1145                     IS_QLA8044(ha))
1146                         qla81xx_idc_event(vha, mb[0], mb[1]);
1147                 break;
1148
1149         case MBA_IDC_AEN:
1150                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1151                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1152                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1153                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1154                 qla83xx_handle_8200_aen(vha, mb);
1155                 break;
1156
1157         case MBA_DPORT_DIAGNOSTICS:
1158                 ql_dbg(ql_dbg_async, vha, 0x5052,
1159                     "D-Port Diagnostics: %04x result=%s\n",
1160                     mb[0],
1161                     mb[1] == 0 ? "start" :
1162                     mb[1] == 1 ? "done (pass)" :
1163                     mb[1] == 2 ? "done (error)" : "other");
1164                 break;
1165
1166         case MBA_TEMPERATURE_ALERT:
1167                 ql_dbg(ql_dbg_async, vha, 0x505e,
1168                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1169                 if (mb[1] == 0x12)
1170                         schedule_work(&ha->board_disable);
1171                 break;
1172
1173         default:
1174                 ql_dbg(ql_dbg_async, vha, 0x5057,
1175                     "Unknown AEN:%04x %04x %04x %04x\n",
1176                     mb[0], mb[1], mb[2], mb[3]);
1177         }
1178
1179         qlt_async_event(mb[0], vha, mb);
1180
1181         if (!vha->vp_idx && ha->num_vhosts)
1182                 qla2x00_alert_all_vps(rsp, mb);
1183 }
1184
1185 /**
1186  * qla2x00_process_completed_request() - Process a Fast Post response.
1187  * @ha: SCSI driver HA context
1188  * @index: SRB index
1189  */
1190 void
1191 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1192                                   struct req_que *req, uint32_t index)
1193 {
1194         srb_t *sp;
1195         struct qla_hw_data *ha = vha->hw;
1196
1197         /* Validate handle. */
1198         if (index >= req->num_outstanding_cmds) {
1199                 ql_log(ql_log_warn, vha, 0x3014,
1200                     "Invalid SCSI command index (%x).\n", index);
1201
1202                 if (IS_P3P_TYPE(ha))
1203                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1204                 else
1205                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1206                 return;
1207         }
1208
1209         sp = req->outstanding_cmds[index];
1210         if (sp) {
1211                 /* Free outstanding command slot. */
1212                 req->outstanding_cmds[index] = NULL;
1213
1214                 /* Save ISP completion status */
1215                 sp->done(ha, sp, DID_OK << 16);
1216         } else {
1217                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1218
1219                 if (IS_P3P_TYPE(ha))
1220                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1221                 else
1222                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1223         }
1224 }
1225
1226 srb_t *
1227 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1228     struct req_que *req, void *iocb)
1229 {
1230         struct qla_hw_data *ha = vha->hw;
1231         sts_entry_t *pkt = iocb;
1232         srb_t *sp = NULL;
1233         uint16_t index;
1234
1235         index = LSW(pkt->handle);
1236         if (index >= req->num_outstanding_cmds) {
1237                 ql_log(ql_log_warn, vha, 0x5031,
1238                     "Invalid command index (%x).\n", index);
1239                 if (IS_P3P_TYPE(ha))
1240                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1241                 else
1242                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1243                 goto done;
1244         }
1245         sp = req->outstanding_cmds[index];
1246         if (!sp) {
1247                 ql_log(ql_log_warn, vha, 0x5032,
1248                     "Invalid completion handle (%x) -- timed-out.\n", index);
1249                 return sp;
1250         }
1251         if (sp->handle != index) {
1252                 ql_log(ql_log_warn, vha, 0x5033,
1253                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1254                 return NULL;
1255         }
1256
1257         req->outstanding_cmds[index] = NULL;
1258
1259 done:
1260         return sp;
1261 }
1262
1263 static void
1264 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1265     struct mbx_entry *mbx)
1266 {
1267         const char func[] = "MBX-IOCB";
1268         const char *type;
1269         fc_port_t *fcport;
1270         srb_t *sp;
1271         struct srb_iocb *lio;
1272         uint16_t *data;
1273         uint16_t status;
1274
1275         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1276         if (!sp)
1277                 return;
1278
1279         lio = &sp->u.iocb_cmd;
1280         type = sp->name;
1281         fcport = sp->fcport;
1282         data = lio->u.logio.data;
1283
1284         data[0] = MBS_COMMAND_ERROR;
1285         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1286             QLA_LOGIO_LOGIN_RETRIED : 0;
1287         if (mbx->entry_status) {
1288                 ql_dbg(ql_dbg_async, vha, 0x5043,
1289                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1290                     "entry-status=%x status=%x state-flag=%x "
1291                     "status-flags=%x.\n", type, sp->handle,
1292                     fcport->d_id.b.domain, fcport->d_id.b.area,
1293                     fcport->d_id.b.al_pa, mbx->entry_status,
1294                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1295                     le16_to_cpu(mbx->status_flags));
1296
1297                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1298                     (uint8_t *)mbx, sizeof(*mbx));
1299
1300                 goto logio_done;
1301         }
1302
1303         status = le16_to_cpu(mbx->status);
1304         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1305             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1306                 status = 0;
1307         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1308                 ql_dbg(ql_dbg_async, vha, 0x5045,
1309                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1310                     type, sp->handle, fcport->d_id.b.domain,
1311                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1312                     le16_to_cpu(mbx->mb1));
1313
1314                 data[0] = MBS_COMMAND_COMPLETE;
1315                 if (sp->type == SRB_LOGIN_CMD) {
1316                         fcport->port_type = FCT_TARGET;
1317                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1318                                 fcport->port_type = FCT_INITIATOR;
1319                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1320                                 fcport->flags |= FCF_FCP2_DEVICE;
1321                 }
1322                 goto logio_done;
1323         }
1324
1325         data[0] = le16_to_cpu(mbx->mb0);
1326         switch (data[0]) {
1327         case MBS_PORT_ID_USED:
1328                 data[1] = le16_to_cpu(mbx->mb1);
1329                 break;
1330         case MBS_LOOP_ID_USED:
1331                 break;
1332         default:
1333                 data[0] = MBS_COMMAND_ERROR;
1334                 break;
1335         }
1336
1337         ql_log(ql_log_warn, vha, 0x5046,
1338             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1339             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1340             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1341             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1342             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1343             le16_to_cpu(mbx->mb7));
1344
1345 logio_done:
1346         sp->done(vha, sp, 0);
1347 }
1348
1349 static void
1350 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1351     sts_entry_t *pkt, int iocb_type)
1352 {
1353         const char func[] = "CT_IOCB";
1354         const char *type;
1355         srb_t *sp;
1356         struct bsg_job *bsg_job;
1357         struct fc_bsg_reply *bsg_reply;
1358         uint16_t comp_status;
1359         int res;
1360
1361         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1362         if (!sp)
1363                 return;
1364
1365         bsg_job = sp->u.bsg_job;
1366         bsg_reply = bsg_job->reply;
1367
1368         type = "ct pass-through";
1369
1370         comp_status = le16_to_cpu(pkt->comp_status);
1371
1372         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1373          * fc payload  to the caller
1374          */
1375         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1376         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1377
1378         if (comp_status != CS_COMPLETE) {
1379                 if (comp_status == CS_DATA_UNDERRUN) {
1380                         res = DID_OK << 16;
1381                         bsg_reply->reply_payload_rcv_len =
1382                             le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1383
1384                         ql_log(ql_log_warn, vha, 0x5048,
1385                             "CT pass-through-%s error "
1386                             "comp_status-status=0x%x total_byte = 0x%x.\n",
1387                             type, comp_status,
1388                             bsg_reply->reply_payload_rcv_len);
1389                 } else {
1390                         ql_log(ql_log_warn, vha, 0x5049,
1391                             "CT pass-through-%s error "
1392                             "comp_status-status=0x%x.\n", type, comp_status);
1393                         res = DID_ERROR << 16;
1394                         bsg_reply->reply_payload_rcv_len = 0;
1395                 }
1396                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1397                     (uint8_t *)pkt, sizeof(*pkt));
1398         } else {
1399                 res = DID_OK << 16;
1400                 bsg_reply->reply_payload_rcv_len =
1401                     bsg_job->reply_payload.payload_len;
1402                 bsg_job->reply_len = 0;
1403         }
1404
1405         sp->done(vha, sp, res);
1406 }
1407
1408 static void
1409 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1410     struct sts_entry_24xx *pkt, int iocb_type)
1411 {
1412         const char func[] = "ELS_CT_IOCB";
1413         const char *type;
1414         srb_t *sp;
1415         struct bsg_job *bsg_job;
1416         struct fc_bsg_reply *bsg_reply;
1417         uint16_t comp_status;
1418         uint32_t fw_status[3];
1419         uint8_t* fw_sts_ptr;
1420         int res;
1421
1422         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1423         if (!sp)
1424                 return;
1425         bsg_job = sp->u.bsg_job;
1426         bsg_reply = bsg_job->reply;
1427
1428         type = NULL;
1429         switch (sp->type) {
1430         case SRB_ELS_CMD_RPT:
1431         case SRB_ELS_CMD_HST:
1432                 type = "els";
1433                 break;
1434         case SRB_CT_CMD:
1435                 type = "ct pass-through";
1436                 break;
1437         case SRB_ELS_DCMD:
1438                 type = "Driver ELS logo";
1439                 ql_dbg(ql_dbg_user, vha, 0x5047,
1440                     "Completing %s: (%p) type=%d.\n", type, sp, sp->type);
1441                 sp->done(vha, sp, 0);
1442                 return;
1443         default:
1444                 ql_dbg(ql_dbg_user, vha, 0x503e,
1445                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1446                 return;
1447         }
1448
1449         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1450         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1451         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1452
1453         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1454          * fc payload  to the caller
1455          */
1456         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1457         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1458
1459         if (comp_status != CS_COMPLETE) {
1460                 if (comp_status == CS_DATA_UNDERRUN) {
1461                         res = DID_OK << 16;
1462                         bsg_reply->reply_payload_rcv_len =
1463                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1464
1465                         ql_dbg(ql_dbg_user, vha, 0x503f,
1466                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1467                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1468                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1469                             le16_to_cpu(((struct els_sts_entry_24xx *)
1470                                 pkt)->total_byte_count));
1471                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1472                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1473                 }
1474                 else {
1475                         ql_dbg(ql_dbg_user, vha, 0x5040,
1476                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1477                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1478                             type, sp->handle, comp_status,
1479                             le16_to_cpu(((struct els_sts_entry_24xx *)
1480                                 pkt)->error_subcode_1),
1481                             le16_to_cpu(((struct els_sts_entry_24xx *)
1482                                     pkt)->error_subcode_2));
1483                         res = DID_ERROR << 16;
1484                         bsg_reply->reply_payload_rcv_len = 0;
1485                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1486                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1487                 }
1488                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1489                                 (uint8_t *)pkt, sizeof(*pkt));
1490         }
1491         else {
1492                 res =  DID_OK << 16;
1493                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1494                 bsg_job->reply_len = 0;
1495         }
1496
1497         sp->done(vha, sp, res);
1498 }
1499
1500 static void
1501 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1502     struct logio_entry_24xx *logio)
1503 {
1504         const char func[] = "LOGIO-IOCB";
1505         const char *type;
1506         fc_port_t *fcport;
1507         srb_t *sp;
1508         struct srb_iocb *lio;
1509         uint16_t *data;
1510         uint32_t iop[2];
1511
1512         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1513         if (!sp)
1514                 return;
1515
1516         lio = &sp->u.iocb_cmd;
1517         type = sp->name;
1518         fcport = sp->fcport;
1519         data = lio->u.logio.data;
1520
1521         data[0] = MBS_COMMAND_ERROR;
1522         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1523                 QLA_LOGIO_LOGIN_RETRIED : 0;
1524         if (logio->entry_status) {
1525                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1526                     "Async-%s error entry - hdl=%x"
1527                     "portid=%02x%02x%02x entry-status=%x.\n",
1528                     type, sp->handle, fcport->d_id.b.domain,
1529                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1530                     logio->entry_status);
1531                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1532                     (uint8_t *)logio, sizeof(*logio));
1533
1534                 goto logio_done;
1535         }
1536
1537         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1538                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1539                     "Async-%s complete - hdl=%x portid=%02x%02x%02x "
1540                     "iop0=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1541                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1542                     le32_to_cpu(logio->io_parameter[0]));
1543
1544                 data[0] = MBS_COMMAND_COMPLETE;
1545                 if (sp->type != SRB_LOGIN_CMD)
1546                         goto logio_done;
1547
1548                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1549                 if (iop[0] & BIT_4) {
1550                         fcport->port_type = FCT_TARGET;
1551                         if (iop[0] & BIT_8)
1552                                 fcport->flags |= FCF_FCP2_DEVICE;
1553                 } else if (iop[0] & BIT_5)
1554                         fcport->port_type = FCT_INITIATOR;
1555
1556                 if (iop[0] & BIT_7)
1557                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1558
1559                 if (logio->io_parameter[7] || logio->io_parameter[8])
1560                         fcport->supported_classes |= FC_COS_CLASS2;
1561                 if (logio->io_parameter[9] || logio->io_parameter[10])
1562                         fcport->supported_classes |= FC_COS_CLASS3;
1563
1564                 goto logio_done;
1565         }
1566
1567         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1568         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1569         switch (iop[0]) {
1570         case LSC_SCODE_PORTID_USED:
1571                 data[0] = MBS_PORT_ID_USED;
1572                 data[1] = LSW(iop[1]);
1573                 break;
1574         case LSC_SCODE_NPORT_USED:
1575                 data[0] = MBS_LOOP_ID_USED;
1576                 break;
1577         default:
1578                 data[0] = MBS_COMMAND_ERROR;
1579                 break;
1580         }
1581
1582         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1583             "Async-%s failed - hdl=%x portid=%02x%02x%02x comp=%x "
1584             "iop0=%x iop1=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1585             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1586             le16_to_cpu(logio->comp_status),
1587             le32_to_cpu(logio->io_parameter[0]),
1588             le32_to_cpu(logio->io_parameter[1]));
1589
1590 logio_done:
1591         sp->done(vha, sp, 0);
1592 }
1593
1594 static void
1595 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1596 {
1597         const char func[] = "TMF-IOCB";
1598         const char *type;
1599         fc_port_t *fcport;
1600         srb_t *sp;
1601         struct srb_iocb *iocb;
1602         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1603
1604         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1605         if (!sp)
1606                 return;
1607
1608         iocb = &sp->u.iocb_cmd;
1609         type = sp->name;
1610         fcport = sp->fcport;
1611         iocb->u.tmf.data = QLA_SUCCESS;
1612
1613         if (sts->entry_status) {
1614                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1615                     "Async-%s error - hdl=%x entry-status(%x).\n",
1616                     type, sp->handle, sts->entry_status);
1617                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1618         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1619                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1620                     "Async-%s error - hdl=%x completion status(%x).\n",
1621                     type, sp->handle, sts->comp_status);
1622                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1623         } else if ((le16_to_cpu(sts->scsi_status) &
1624             SS_RESPONSE_INFO_LEN_VALID)) {
1625                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1626                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1627                             "Async-%s error - hdl=%x not enough response(%d).\n",
1628                             type, sp->handle, sts->rsp_data_len);
1629                 } else if (sts->data[3]) {
1630                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1631                             "Async-%s error - hdl=%x response(%x).\n",
1632                             type, sp->handle, sts->data[3]);
1633                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1634                 }
1635         }
1636
1637         if (iocb->u.tmf.data != QLA_SUCCESS)
1638                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5055,
1639                     (uint8_t *)sts, sizeof(*sts));
1640
1641         sp->done(vha, sp, 0);
1642 }
1643
1644 /**
1645  * qla2x00_process_response_queue() - Process response queue entries.
1646  * @ha: SCSI driver HA context
1647  */
1648 void
1649 qla2x00_process_response_queue(struct rsp_que *rsp)
1650 {
1651         struct scsi_qla_host *vha;
1652         struct qla_hw_data *ha = rsp->hw;
1653         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1654         sts_entry_t     *pkt;
1655         uint16_t        handle_cnt;
1656         uint16_t        cnt;
1657
1658         vha = pci_get_drvdata(ha->pdev);
1659
1660         if (!vha->flags.online)
1661                 return;
1662
1663         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1664                 pkt = (sts_entry_t *)rsp->ring_ptr;
1665
1666                 rsp->ring_index++;
1667                 if (rsp->ring_index == rsp->length) {
1668                         rsp->ring_index = 0;
1669                         rsp->ring_ptr = rsp->ring;
1670                 } else {
1671                         rsp->ring_ptr++;
1672                 }
1673
1674                 if (pkt->entry_status != 0) {
1675                         qla2x00_error_entry(vha, rsp, pkt);
1676                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1677                         wmb();
1678                         continue;
1679                 }
1680
1681                 switch (pkt->entry_type) {
1682                 case STATUS_TYPE:
1683                         qla2x00_status_entry(vha, rsp, pkt);
1684                         break;
1685                 case STATUS_TYPE_21:
1686                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1687                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1688                                 qla2x00_process_completed_request(vha, rsp->req,
1689                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1690                         }
1691                         break;
1692                 case STATUS_TYPE_22:
1693                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1694                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1695                                 qla2x00_process_completed_request(vha, rsp->req,
1696                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1697                         }
1698                         break;
1699                 case STATUS_CONT_TYPE:
1700                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1701                         break;
1702                 case MBX_IOCB_TYPE:
1703                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1704                             (struct mbx_entry *)pkt);
1705                         break;
1706                 case CT_IOCB_TYPE:
1707                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1708                         break;
1709                 default:
1710                         /* Type Not Supported. */
1711                         ql_log(ql_log_warn, vha, 0x504a,
1712                             "Received unknown response pkt type %x "
1713                             "entry status=%x.\n",
1714                             pkt->entry_type, pkt->entry_status);
1715                         break;
1716                 }
1717                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1718                 wmb();
1719         }
1720
1721         /* Adjust ring index */
1722         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1723 }
1724
1725 static inline void
1726 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1727                      uint32_t sense_len, struct rsp_que *rsp, int res)
1728 {
1729         struct scsi_qla_host *vha = sp->fcport->vha;
1730         struct scsi_cmnd *cp = GET_CMD_SP(sp);
1731         uint32_t track_sense_len;
1732
1733         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1734                 sense_len = SCSI_SENSE_BUFFERSIZE;
1735
1736         SET_CMD_SENSE_LEN(sp, sense_len);
1737         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
1738         track_sense_len = sense_len;
1739
1740         if (sense_len > par_sense_len)
1741                 sense_len = par_sense_len;
1742
1743         memcpy(cp->sense_buffer, sense_data, sense_len);
1744
1745         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
1746         track_sense_len -= sense_len;
1747         SET_CMD_SENSE_LEN(sp, track_sense_len);
1748
1749         if (track_sense_len != 0) {
1750                 rsp->status_srb = sp;
1751                 cp->result = res;
1752         }
1753
1754         if (sense_len) {
1755                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
1756                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
1757                     sp->fcport->vha->host_no, cp->device->id, cp->device->lun,
1758                     cp);
1759                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
1760                     cp->sense_buffer, sense_len);
1761         }
1762 }
1763
1764 struct scsi_dif_tuple {
1765         __be16 guard;       /* Checksum */
1766         __be16 app_tag;         /* APPL identifier */
1767         __be32 ref_tag;         /* Target LBA or indirect LBA */
1768 };
1769
1770 /*
1771  * Checks the guard or meta-data for the type of error
1772  * detected by the HBA. In case of errors, we set the
1773  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1774  * to indicate to the kernel that the HBA detected error.
1775  */
1776 static inline int
1777 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1778 {
1779         struct scsi_qla_host *vha = sp->fcport->vha;
1780         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1781         uint8_t         *ap = &sts24->data[12];
1782         uint8_t         *ep = &sts24->data[20];
1783         uint32_t        e_ref_tag, a_ref_tag;
1784         uint16_t        e_app_tag, a_app_tag;
1785         uint16_t        e_guard, a_guard;
1786
1787         /*
1788          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
1789          * would make guard field appear at offset 2
1790          */
1791         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
1792         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
1793         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
1794         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
1795         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
1796         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
1797
1798         ql_dbg(ql_dbg_io, vha, 0x3023,
1799             "iocb(s) %p Returned STATUS.\n", sts24);
1800
1801         ql_dbg(ql_dbg_io, vha, 0x3024,
1802             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1803             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1804             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
1805             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1806             a_app_tag, e_app_tag, a_guard, e_guard);
1807
1808         /*
1809          * Ignore sector if:
1810          * For type     3: ref & app tag is all 'f's
1811          * For type 0,1,2: app tag is all 'f's
1812          */
1813         if ((a_app_tag == 0xffff) &&
1814             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
1815              (a_ref_tag == 0xffffffff))) {
1816                 uint32_t blocks_done, resid;
1817                 sector_t lba_s = scsi_get_lba(cmd);
1818
1819                 /* 2TB boundary case covered automatically with this */
1820                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
1821
1822                 resid = scsi_bufflen(cmd) - (blocks_done *
1823                     cmd->device->sector_size);
1824
1825                 scsi_set_resid(cmd, resid);
1826                 cmd->result = DID_OK << 16;
1827
1828                 /* Update protection tag */
1829                 if (scsi_prot_sg_count(cmd)) {
1830                         uint32_t i, j = 0, k = 0, num_ent;
1831                         struct scatterlist *sg;
1832                         struct t10_pi_tuple *spt;
1833
1834                         /* Patch the corresponding protection tags */
1835                         scsi_for_each_prot_sg(cmd, sg,
1836                             scsi_prot_sg_count(cmd), i) {
1837                                 num_ent = sg_dma_len(sg) / 8;
1838                                 if (k + num_ent < blocks_done) {
1839                                         k += num_ent;
1840                                         continue;
1841                                 }
1842                                 j = blocks_done - k - 1;
1843                                 k = blocks_done;
1844                                 break;
1845                         }
1846
1847                         if (k != blocks_done) {
1848                                 ql_log(ql_log_warn, vha, 0x302f,
1849                                     "unexpected tag values tag:lba=%x:%llx)\n",
1850                                     e_ref_tag, (unsigned long long)lba_s);
1851                                 return 1;
1852                         }
1853
1854                         spt = page_address(sg_page(sg)) + sg->offset;
1855                         spt += j;
1856
1857                         spt->app_tag = 0xffff;
1858                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
1859                                 spt->ref_tag = 0xffffffff;
1860                 }
1861
1862                 return 0;
1863         }
1864
1865         /* check guard */
1866         if (e_guard != a_guard) {
1867                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1868                     0x10, 0x1);
1869                 set_driver_byte(cmd, DRIVER_SENSE);
1870                 set_host_byte(cmd, DID_ABORT);
1871                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1872                 return 1;
1873         }
1874
1875         /* check ref tag */
1876         if (e_ref_tag != a_ref_tag) {
1877                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1878                     0x10, 0x3);
1879                 set_driver_byte(cmd, DRIVER_SENSE);
1880                 set_host_byte(cmd, DID_ABORT);
1881                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1882                 return 1;
1883         }
1884
1885         /* check appl tag */
1886         if (e_app_tag != a_app_tag) {
1887                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1888                     0x10, 0x2);
1889                 set_driver_byte(cmd, DRIVER_SENSE);
1890                 set_host_byte(cmd, DID_ABORT);
1891                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1892                 return 1;
1893         }
1894
1895         return 1;
1896 }
1897
1898 static void
1899 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
1900                                   struct req_que *req, uint32_t index)
1901 {
1902         struct qla_hw_data *ha = vha->hw;
1903         srb_t *sp;
1904         uint16_t        comp_status;
1905         uint16_t        scsi_status;
1906         uint16_t thread_id;
1907         uint32_t rval = EXT_STATUS_OK;
1908         struct bsg_job *bsg_job = NULL;
1909         struct fc_bsg_request *bsg_request;
1910         struct fc_bsg_reply *bsg_reply;
1911         sts_entry_t *sts;
1912         struct sts_entry_24xx *sts24;
1913         sts = (sts_entry_t *) pkt;
1914         sts24 = (struct sts_entry_24xx *) pkt;
1915
1916         /* Validate handle. */
1917         if (index >= req->num_outstanding_cmds) {
1918                 ql_log(ql_log_warn, vha, 0x70af,
1919                     "Invalid SCSI completion handle 0x%x.\n", index);
1920                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1921                 return;
1922         }
1923
1924         sp = req->outstanding_cmds[index];
1925         if (!sp) {
1926                 ql_log(ql_log_warn, vha, 0x70b0,
1927                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
1928                     req->id, index);
1929
1930                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1931                 return;
1932         }
1933
1934         /* Free outstanding command slot. */
1935         req->outstanding_cmds[index] = NULL;
1936         bsg_job = sp->u.bsg_job;
1937         bsg_request = bsg_job->request;
1938         bsg_reply = bsg_job->reply;
1939
1940         if (IS_FWI2_CAPABLE(ha)) {
1941                 comp_status = le16_to_cpu(sts24->comp_status);
1942                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1943         } else {
1944                 comp_status = le16_to_cpu(sts->comp_status);
1945                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1946         }
1947
1948         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
1949         switch (comp_status) {
1950         case CS_COMPLETE:
1951                 if (scsi_status == 0) {
1952                         bsg_reply->reply_payload_rcv_len =
1953                                         bsg_job->reply_payload.payload_len;
1954                         vha->qla_stats.input_bytes +=
1955                                 bsg_reply->reply_payload_rcv_len;
1956                         vha->qla_stats.input_requests++;
1957                         rval = EXT_STATUS_OK;
1958                 }
1959                 goto done;
1960
1961         case CS_DATA_OVERRUN:
1962                 ql_dbg(ql_dbg_user, vha, 0x70b1,
1963                     "Command completed with date overrun thread_id=%d\n",
1964                     thread_id);
1965                 rval = EXT_STATUS_DATA_OVERRUN;
1966                 break;
1967
1968         case CS_DATA_UNDERRUN:
1969                 ql_dbg(ql_dbg_user, vha, 0x70b2,
1970                     "Command completed with date underrun thread_id=%d\n",
1971                     thread_id);
1972                 rval = EXT_STATUS_DATA_UNDERRUN;
1973                 break;
1974         case CS_BIDIR_RD_OVERRUN:
1975                 ql_dbg(ql_dbg_user, vha, 0x70b3,
1976                     "Command completed with read data overrun thread_id=%d\n",
1977                     thread_id);
1978                 rval = EXT_STATUS_DATA_OVERRUN;
1979                 break;
1980
1981         case CS_BIDIR_RD_WR_OVERRUN:
1982                 ql_dbg(ql_dbg_user, vha, 0x70b4,
1983                     "Command completed with read and write data overrun "
1984                     "thread_id=%d\n", thread_id);
1985                 rval = EXT_STATUS_DATA_OVERRUN;
1986                 break;
1987
1988         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
1989                 ql_dbg(ql_dbg_user, vha, 0x70b5,
1990                     "Command completed with read data over and write data "
1991                     "underrun thread_id=%d\n", thread_id);
1992                 rval = EXT_STATUS_DATA_OVERRUN;
1993                 break;
1994
1995         case CS_BIDIR_RD_UNDERRUN:
1996                 ql_dbg(ql_dbg_user, vha, 0x70b6,
1997                     "Command completed with read data data underrun "
1998                     "thread_id=%d\n", thread_id);
1999                 rval = EXT_STATUS_DATA_UNDERRUN;
2000                 break;
2001
2002         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2003                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2004                     "Command completed with read data under and write data "
2005                     "overrun thread_id=%d\n", thread_id);
2006                 rval = EXT_STATUS_DATA_UNDERRUN;
2007                 break;
2008
2009         case CS_BIDIR_RD_WR_UNDERRUN:
2010                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2011                     "Command completed with read and write data underrun "
2012                     "thread_id=%d\n", thread_id);
2013                 rval = EXT_STATUS_DATA_UNDERRUN;
2014                 break;
2015
2016         case CS_BIDIR_DMA:
2017                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2018                     "Command completed with data DMA error thread_id=%d\n",
2019                     thread_id);
2020                 rval = EXT_STATUS_DMA_ERR;
2021                 break;
2022
2023         case CS_TIMEOUT:
2024                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2025                     "Command completed with timeout thread_id=%d\n",
2026                     thread_id);
2027                 rval = EXT_STATUS_TIMEOUT;
2028                 break;
2029         default:
2030                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2031                     "Command completed with completion status=0x%x "
2032                     "thread_id=%d\n", comp_status, thread_id);
2033                 rval = EXT_STATUS_ERR;
2034                 break;
2035         }
2036         bsg_reply->reply_payload_rcv_len = 0;
2037
2038 done:
2039         /* Return the vendor specific reply to API */
2040         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2041         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2042         /* Always return DID_OK, bsg will send the vendor specific response
2043          * in this case only */
2044         sp->done(vha, sp, (DID_OK << 6));
2045
2046 }
2047
2048 /**
2049  * qla2x00_status_entry() - Process a Status IOCB entry.
2050  * @ha: SCSI driver HA context
2051  * @pkt: Entry pointer
2052  */
2053 static void
2054 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2055 {
2056         srb_t           *sp;
2057         fc_port_t       *fcport;
2058         struct scsi_cmnd *cp;
2059         sts_entry_t *sts;
2060         struct sts_entry_24xx *sts24;
2061         uint16_t        comp_status;
2062         uint16_t        scsi_status;
2063         uint16_t        ox_id;
2064         uint8_t         lscsi_status;
2065         int32_t         resid;
2066         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2067             fw_resid_len;
2068         uint8_t         *rsp_info, *sense_data;
2069         struct qla_hw_data *ha = vha->hw;
2070         uint32_t handle;
2071         uint16_t que;
2072         struct req_que *req;
2073         int logit = 1;
2074         int res = 0;
2075         uint16_t state_flags = 0;
2076         uint16_t retry_delay = 0;
2077
2078         sts = (sts_entry_t *) pkt;
2079         sts24 = (struct sts_entry_24xx *) pkt;
2080         if (IS_FWI2_CAPABLE(ha)) {
2081                 comp_status = le16_to_cpu(sts24->comp_status);
2082                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2083                 state_flags = le16_to_cpu(sts24->state_flags);
2084         } else {
2085                 comp_status = le16_to_cpu(sts->comp_status);
2086                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2087         }
2088         handle = (uint32_t) LSW(sts->handle);
2089         que = MSW(sts->handle);
2090         req = ha->req_q_map[que];
2091
2092         /* Check for invalid queue pointer */
2093         if (req == NULL ||
2094             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2095                 ql_dbg(ql_dbg_io, vha, 0x3059,
2096                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2097                     "que=%u.\n", sts->handle, req, que);
2098                 return;
2099         }
2100
2101         /* Validate handle. */
2102         if (handle < req->num_outstanding_cmds) {
2103                 sp = req->outstanding_cmds[handle];
2104                 if (!sp) {
2105                         ql_dbg(ql_dbg_io, vha, 0x3075,
2106                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2107                             __func__, vha->host_no, sts->handle);
2108                         return;
2109                 }
2110         } else {
2111                 ql_dbg(ql_dbg_io, vha, 0x3017,
2112                     "Invalid status handle, out of range (0x%x).\n",
2113                     sts->handle);
2114
2115                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2116                         if (IS_P3P_TYPE(ha))
2117                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2118                         else
2119                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2120                         qla2xxx_wake_dpc(vha);
2121                 }
2122                 return;
2123         }
2124
2125         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2126                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2127                 return;
2128         }
2129
2130         /* Task Management completion. */
2131         if (sp->type == SRB_TM_CMD) {
2132                 qla24xx_tm_iocb_entry(vha, req, pkt);
2133                 return;
2134         }
2135
2136         /* Fast path completion. */
2137         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2138                 qla2x00_process_completed_request(vha, req, handle);
2139
2140                 return;
2141         }
2142
2143         req->outstanding_cmds[handle] = NULL;
2144         cp = GET_CMD_SP(sp);
2145         if (cp == NULL) {
2146                 ql_dbg(ql_dbg_io, vha, 0x3018,
2147                     "Command already returned (0x%x/%p).\n",
2148                     sts->handle, sp);
2149
2150                 return;
2151         }
2152
2153         lscsi_status = scsi_status & STATUS_MASK;
2154
2155         fcport = sp->fcport;
2156
2157         ox_id = 0;
2158         sense_len = par_sense_len = rsp_info_len = resid_len =
2159             fw_resid_len = 0;
2160         if (IS_FWI2_CAPABLE(ha)) {
2161                 if (scsi_status & SS_SENSE_LEN_VALID)
2162                         sense_len = le32_to_cpu(sts24->sense_len);
2163                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2164                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2165                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2166                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2167                 if (comp_status == CS_DATA_UNDERRUN)
2168                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2169                 rsp_info = sts24->data;
2170                 sense_data = sts24->data;
2171                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2172                 ox_id = le16_to_cpu(sts24->ox_id);
2173                 par_sense_len = sizeof(sts24->data);
2174                 /* Valid values of the retry delay timer are 0x1-0xffef */
2175                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1)
2176                         retry_delay = sts24->retry_delay;
2177         } else {
2178                 if (scsi_status & SS_SENSE_LEN_VALID)
2179                         sense_len = le16_to_cpu(sts->req_sense_length);
2180                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2181                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2182                 resid_len = le32_to_cpu(sts->residual_length);
2183                 rsp_info = sts->rsp_info;
2184                 sense_data = sts->req_sense_data;
2185                 par_sense_len = sizeof(sts->req_sense_data);
2186         }
2187
2188         /* Check for any FCP transport errors. */
2189         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2190                 /* Sense data lies beyond any FCP RESPONSE data. */
2191                 if (IS_FWI2_CAPABLE(ha)) {
2192                         sense_data += rsp_info_len;
2193                         par_sense_len -= rsp_info_len;
2194                 }
2195                 if (rsp_info_len > 3 && rsp_info[3]) {
2196                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2197                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2198                             rsp_info_len, rsp_info[3]);
2199
2200                         res = DID_BUS_BUSY << 16;
2201                         goto out;
2202                 }
2203         }
2204
2205         /* Check for overrun. */
2206         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2207             scsi_status & SS_RESIDUAL_OVER)
2208                 comp_status = CS_DATA_OVERRUN;
2209
2210         /*
2211          * Check retry_delay_timer value if we receive a busy or
2212          * queue full.
2213          */
2214         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2215             lscsi_status == SAM_STAT_BUSY)
2216                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2217
2218         /*
2219          * Based on Host and scsi status generate status code for Linux
2220          */
2221         switch (comp_status) {
2222         case CS_COMPLETE:
2223         case CS_QUEUE_FULL:
2224                 if (scsi_status == 0) {
2225                         res = DID_OK << 16;
2226                         break;
2227                 }
2228                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2229                         resid = resid_len;
2230                         scsi_set_resid(cp, resid);
2231
2232                         if (!lscsi_status &&
2233                             ((unsigned)(scsi_bufflen(cp) - resid) <
2234                              cp->underflow)) {
2235                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2236                                     "Mid-layer underflow "
2237                                     "detected (0x%x of 0x%x bytes).\n",
2238                                     resid, scsi_bufflen(cp));
2239
2240                                 res = DID_ERROR << 16;
2241                                 break;
2242                         }
2243                 }
2244                 res = DID_OK << 16 | lscsi_status;
2245
2246                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2247                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2248                             "QUEUE FULL detected.\n");
2249                         break;
2250                 }
2251                 logit = 0;
2252                 if (lscsi_status != SS_CHECK_CONDITION)
2253                         break;
2254
2255                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2256                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2257                         break;
2258
2259                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2260                     rsp, res);
2261                 break;
2262
2263         case CS_DATA_UNDERRUN:
2264                 /* Use F/W calculated residual length. */
2265                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2266                 scsi_set_resid(cp, resid);
2267                 if (scsi_status & SS_RESIDUAL_UNDER) {
2268                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2269                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2270                                     "Dropped frame(s) detected "
2271                                     "(0x%x of 0x%x bytes).\n",
2272                                     resid, scsi_bufflen(cp));
2273
2274                                 res = DID_ERROR << 16 | lscsi_status;
2275                                 goto check_scsi_status;
2276                         }
2277
2278                         if (!lscsi_status &&
2279                             ((unsigned)(scsi_bufflen(cp) - resid) <
2280                             cp->underflow)) {
2281                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2282                                     "Mid-layer underflow "
2283                                     "detected (0x%x of 0x%x bytes).\n",
2284                                     resid, scsi_bufflen(cp));
2285
2286                                 res = DID_ERROR << 16;
2287                                 break;
2288                         }
2289                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2290                             lscsi_status != SAM_STAT_BUSY) {
2291                         /*
2292                          * scsi status of task set and busy are considered to be
2293                          * task not completed.
2294                          */
2295
2296                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2297                             "Dropped frame(s) detected (0x%x "
2298                             "of 0x%x bytes).\n", resid,
2299                             scsi_bufflen(cp));
2300
2301                         res = DID_ERROR << 16 | lscsi_status;
2302                         goto check_scsi_status;
2303                 } else {
2304                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2305                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2306                             scsi_status, lscsi_status);
2307                 }
2308
2309                 res = DID_OK << 16 | lscsi_status;
2310                 logit = 0;
2311
2312 check_scsi_status:
2313                 /*
2314                  * Check to see if SCSI Status is non zero. If so report SCSI
2315                  * Status.
2316                  */
2317                 if (lscsi_status != 0) {
2318                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2319                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2320                                     "QUEUE FULL detected.\n");
2321                                 logit = 1;
2322                                 break;
2323                         }
2324                         if (lscsi_status != SS_CHECK_CONDITION)
2325                                 break;
2326
2327                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2328                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2329                                 break;
2330
2331                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2332                             sense_len, rsp, res);
2333                 }
2334                 break;
2335
2336         case CS_PORT_LOGGED_OUT:
2337         case CS_PORT_CONFIG_CHG:
2338         case CS_PORT_BUSY:
2339         case CS_INCOMPLETE:
2340         case CS_PORT_UNAVAILABLE:
2341         case CS_TIMEOUT:
2342         case CS_RESET:
2343
2344                 /*
2345                  * We are going to have the fc class block the rport
2346                  * while we try to recover so instruct the mid layer
2347                  * to requeue until the class decides how to handle this.
2348                  */
2349                 res = DID_TRANSPORT_DISRUPTED << 16;
2350
2351                 if (comp_status == CS_TIMEOUT) {
2352                         if (IS_FWI2_CAPABLE(ha))
2353                                 break;
2354                         else if ((le16_to_cpu(sts->status_flags) &
2355                             SF_LOGOUT_SENT) == 0)
2356                                 break;
2357                 }
2358
2359                 ql_dbg(ql_dbg_io, fcport->vha, 0x3021,
2360                     "Port to be marked lost on fcport=%02x%02x%02x, current "
2361                     "port state= %s.\n", fcport->d_id.b.domain,
2362                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
2363                     port_state_str[atomic_read(&fcport->state)]);
2364
2365                 if (atomic_read(&fcport->state) == FCS_ONLINE)
2366                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2367                 break;
2368
2369         case CS_ABORTED:
2370                 res = DID_RESET << 16;
2371                 break;
2372
2373         case CS_DIF_ERROR:
2374                 logit = qla2x00_handle_dif_error(sp, sts24);
2375                 res = cp->result;
2376                 break;
2377
2378         case CS_TRANSPORT:
2379                 res = DID_ERROR << 16;
2380
2381                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2382                         break;
2383
2384                 if (state_flags & BIT_4)
2385                         scmd_printk(KERN_WARNING, cp,
2386                             "Unsupported device '%s' found.\n",
2387                             cp->device->vendor);
2388                 break;
2389
2390         default:
2391                 res = DID_ERROR << 16;
2392                 break;
2393         }
2394
2395 out:
2396         if (logit)
2397                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2398                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2399                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2400                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2401                     comp_status, scsi_status, res, vha->host_no,
2402                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2403                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2404                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2405                     resid_len, fw_resid_len, sp, cp);
2406
2407         if (rsp->status_srb == NULL)
2408                 sp->done(ha, sp, res);
2409 }
2410
2411 /**
2412  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2413  * @ha: SCSI driver HA context
2414  * @pkt: Entry pointer
2415  *
2416  * Extended sense data.
2417  */
2418 static void
2419 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2420 {
2421         uint8_t sense_sz = 0;
2422         struct qla_hw_data *ha = rsp->hw;
2423         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2424         srb_t *sp = rsp->status_srb;
2425         struct scsi_cmnd *cp;
2426         uint32_t sense_len;
2427         uint8_t *sense_ptr;
2428
2429         if (!sp || !GET_CMD_SENSE_LEN(sp))
2430                 return;
2431
2432         sense_len = GET_CMD_SENSE_LEN(sp);
2433         sense_ptr = GET_CMD_SENSE_PTR(sp);
2434
2435         cp = GET_CMD_SP(sp);
2436         if (cp == NULL) {
2437                 ql_log(ql_log_warn, vha, 0x3025,
2438                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2439
2440                 rsp->status_srb = NULL;
2441                 return;
2442         }
2443
2444         if (sense_len > sizeof(pkt->data))
2445                 sense_sz = sizeof(pkt->data);
2446         else
2447                 sense_sz = sense_len;
2448
2449         /* Move sense data. */
2450         if (IS_FWI2_CAPABLE(ha))
2451                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2452         memcpy(sense_ptr, pkt->data, sense_sz);
2453         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2454                 sense_ptr, sense_sz);
2455
2456         sense_len -= sense_sz;
2457         sense_ptr += sense_sz;
2458
2459         SET_CMD_SENSE_PTR(sp, sense_ptr);
2460         SET_CMD_SENSE_LEN(sp, sense_len);
2461
2462         /* Place command on done queue. */
2463         if (sense_len == 0) {
2464                 rsp->status_srb = NULL;
2465                 sp->done(ha, sp, cp->result);
2466         }
2467 }
2468
2469 /**
2470  * qla2x00_error_entry() - Process an error entry.
2471  * @ha: SCSI driver HA context
2472  * @pkt: Entry pointer
2473  */
2474 static void
2475 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2476 {
2477         srb_t *sp;
2478         struct qla_hw_data *ha = vha->hw;
2479         const char func[] = "ERROR-IOCB";
2480         uint16_t que = MSW(pkt->handle);
2481         struct req_que *req = NULL;
2482         int res = DID_ERROR << 16;
2483
2484         ql_dbg(ql_dbg_async, vha, 0x502a,
2485             "type of error status in response: 0x%x\n", pkt->entry_status);
2486
2487         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2488                 goto fatal;
2489
2490         req = ha->req_q_map[que];
2491
2492         if (pkt->entry_status & RF_BUSY)
2493                 res = DID_BUS_BUSY << 16;
2494
2495         if (pkt->entry_type == NOTIFY_ACK_TYPE &&
2496             pkt->handle == QLA_TGT_SKIP_HANDLE)
2497                 return;
2498
2499         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2500         if (sp) {
2501                 sp->done(ha, sp, res);
2502                 return;
2503         }
2504 fatal:
2505         ql_log(ql_log_warn, vha, 0x5030,
2506             "Error entry - invalid handle/queue (%04x).\n", que);
2507 }
2508
2509 /**
2510  * qla24xx_mbx_completion() - Process mailbox command completions.
2511  * @ha: SCSI driver HA context
2512  * @mb0: Mailbox0 register
2513  */
2514 static void
2515 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2516 {
2517         uint16_t        cnt;
2518         uint32_t        mboxes;
2519         uint16_t __iomem *wptr;
2520         struct qla_hw_data *ha = vha->hw;
2521         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2522
2523         /* Read all mbox registers? */
2524         mboxes = (1 << ha->mbx_count) - 1;
2525         if (!ha->mcp)
2526                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2527         else
2528                 mboxes = ha->mcp->in_mb;
2529
2530         /* Load return mailbox registers. */
2531         ha->flags.mbox_int = 1;
2532         ha->mailbox_out[0] = mb0;
2533         mboxes >>= 1;
2534         wptr = (uint16_t __iomem *)&reg->mailbox1;
2535
2536         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2537                 if (mboxes & BIT_0)
2538                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2539
2540                 mboxes >>= 1;
2541                 wptr++;
2542         }
2543 }
2544
2545 static void
2546 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2547         struct abort_entry_24xx *pkt)
2548 {
2549         const char func[] = "ABT_IOCB";
2550         srb_t *sp;
2551         struct srb_iocb *abt;
2552
2553         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2554         if (!sp)
2555                 return;
2556
2557         abt = &sp->u.iocb_cmd;
2558         abt->u.abt.comp_status = le32_to_cpu(pkt->nport_handle);
2559         sp->done(vha, sp, 0);
2560 }
2561
2562 /**
2563  * qla24xx_process_response_queue() - Process response queue entries.
2564  * @ha: SCSI driver HA context
2565  */
2566 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2567         struct rsp_que *rsp)
2568 {
2569         struct sts_entry_24xx *pkt;
2570         struct qla_hw_data *ha = vha->hw;
2571
2572         if (!vha->flags.online)
2573                 return;
2574
2575         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2576                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
2577
2578                 rsp->ring_index++;
2579                 if (rsp->ring_index == rsp->length) {
2580                         rsp->ring_index = 0;
2581                         rsp->ring_ptr = rsp->ring;
2582                 } else {
2583                         rsp->ring_ptr++;
2584                 }
2585
2586                 if (pkt->entry_status != 0) {
2587                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
2588
2589                         if (qlt_24xx_process_response_error(vha, pkt))
2590                                 goto process_err;
2591
2592                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2593                         wmb();
2594                         continue;
2595                 }
2596 process_err:
2597
2598                 switch (pkt->entry_type) {
2599                 case STATUS_TYPE:
2600                         qla2x00_status_entry(vha, rsp, pkt);
2601                         break;
2602                 case STATUS_CONT_TYPE:
2603                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2604                         break;
2605                 case VP_RPT_ID_IOCB_TYPE:
2606                         qla24xx_report_id_acquisition(vha,
2607                             (struct vp_rpt_id_entry_24xx *)pkt);
2608                         break;
2609                 case LOGINOUT_PORT_IOCB_TYPE:
2610                         qla24xx_logio_entry(vha, rsp->req,
2611                             (struct logio_entry_24xx *)pkt);
2612                         break;
2613                 case CT_IOCB_TYPE:
2614                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2615                         break;
2616                 case ELS_IOCB_TYPE:
2617                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2618                         break;
2619                 case ABTS_RECV_24XX:
2620                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
2621                                 /* ensure that the ATIO queue is empty */
2622                                 qlt_handle_abts_recv(vha, (response_t *)pkt);
2623                                 break;
2624                         } else {
2625                                 /* drop through */
2626                                 qlt_24xx_process_atio_queue(vha, 1);
2627                         }
2628                 case ABTS_RESP_24XX:
2629                 case CTIO_TYPE7:
2630                 case NOTIFY_ACK_TYPE:
2631                 case CTIO_CRC2:
2632                         qlt_response_pkt_all_vps(vha, (response_t *)pkt);
2633                         break;
2634                 case MARKER_TYPE:
2635                         /* Do nothing in this case, this check is to prevent it
2636                          * from falling into default case
2637                          */
2638                         break;
2639                 case ABORT_IOCB_TYPE:
2640                         qla24xx_abort_iocb_entry(vha, rsp->req,
2641                             (struct abort_entry_24xx *)pkt);
2642                         break;
2643                 default:
2644                         /* Type Not Supported. */
2645                         ql_dbg(ql_dbg_async, vha, 0x5042,
2646                             "Received unknown response pkt type %x "
2647                             "entry status=%x.\n",
2648                             pkt->entry_type, pkt->entry_status);
2649                         break;
2650                 }
2651                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2652                 wmb();
2653         }
2654
2655         /* Adjust ring index */
2656         if (IS_P3P_TYPE(ha)) {
2657                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2658                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2659         } else
2660                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2661 }
2662
2663 static void
2664 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2665 {
2666         int rval;
2667         uint32_t cnt;
2668         struct qla_hw_data *ha = vha->hw;
2669         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2670
2671         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
2672             !IS_QLA27XX(ha))
2673                 return;
2674
2675         rval = QLA_SUCCESS;
2676         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2677         RD_REG_DWORD(&reg->iobase_addr);
2678         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2679         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2680             rval == QLA_SUCCESS; cnt--) {
2681                 if (cnt) {
2682                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2683                         udelay(10);
2684                 } else
2685                         rval = QLA_FUNCTION_TIMEOUT;
2686         }
2687         if (rval == QLA_SUCCESS)
2688                 goto next_test;
2689
2690         rval = QLA_SUCCESS;
2691         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2692         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2693             rval == QLA_SUCCESS; cnt--) {
2694                 if (cnt) {
2695                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2696                         udelay(10);
2697                 } else
2698                         rval = QLA_FUNCTION_TIMEOUT;
2699         }
2700         if (rval != QLA_SUCCESS)
2701                 goto done;
2702
2703 next_test:
2704         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2705                 ql_log(ql_log_info, vha, 0x504c,
2706                     "Additional code -- 0x55AA.\n");
2707
2708 done:
2709         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2710         RD_REG_DWORD(&reg->iobase_window);
2711 }
2712
2713 /**
2714  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
2715  * @irq:
2716  * @dev_id: SCSI driver HA context
2717  *
2718  * Called by system whenever the host adapter generates an interrupt.
2719  *
2720  * Returns handled flag.
2721  */
2722 irqreturn_t
2723 qla24xx_intr_handler(int irq, void *dev_id)
2724 {
2725         scsi_qla_host_t *vha;
2726         struct qla_hw_data *ha;
2727         struct device_reg_24xx __iomem *reg;
2728         int             status;
2729         unsigned long   iter;
2730         uint32_t        stat;
2731         uint32_t        hccr;
2732         uint16_t        mb[8];
2733         struct rsp_que *rsp;
2734         unsigned long   flags;
2735
2736         rsp = (struct rsp_que *) dev_id;
2737         if (!rsp) {
2738                 ql_log(ql_log_info, NULL, 0x5059,
2739                     "%s: NULL response queue pointer.\n", __func__);
2740                 return IRQ_NONE;
2741         }
2742
2743         ha = rsp->hw;
2744         reg = &ha->iobase->isp24;
2745         status = 0;
2746
2747         if (unlikely(pci_channel_offline(ha->pdev)))
2748                 return IRQ_HANDLED;
2749
2750         spin_lock_irqsave(&ha->hardware_lock, flags);
2751         vha = pci_get_drvdata(ha->pdev);
2752         for (iter = 50; iter--; ) {
2753                 stat = RD_REG_DWORD(&reg->host_status);
2754                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
2755                         break;
2756                 if (stat & HSRX_RISC_PAUSED) {
2757                         if (unlikely(pci_channel_offline(ha->pdev)))
2758                                 break;
2759
2760                         hccr = RD_REG_DWORD(&reg->hccr);
2761
2762                         ql_log(ql_log_warn, vha, 0x504b,
2763                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2764                             hccr);
2765
2766                         qla2xxx_check_risc_status(vha);
2767
2768                         ha->isp_ops->fw_dump(vha, 1);
2769                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2770                         break;
2771                 } else if ((stat & HSRX_RISC_INT) == 0)
2772                         break;
2773
2774                 switch (stat & 0xff) {
2775                 case INTR_ROM_MB_SUCCESS:
2776                 case INTR_ROM_MB_FAILED:
2777                 case INTR_MB_SUCCESS:
2778                 case INTR_MB_FAILED:
2779                         qla24xx_mbx_completion(vha, MSW(stat));
2780                         status |= MBX_INTERRUPT;
2781
2782                         break;
2783                 case INTR_ASYNC_EVENT:
2784                         mb[0] = MSW(stat);
2785                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2786                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2787                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2788                         qla2x00_async_event(vha, rsp, mb);
2789                         break;
2790                 case INTR_RSP_QUE_UPDATE:
2791                 case INTR_RSP_QUE_UPDATE_83XX:
2792                         qla24xx_process_response_queue(vha, rsp);
2793                         break;
2794                 case INTR_ATIO_QUE_UPDATE:{
2795                         unsigned long flags2;
2796                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
2797                         qlt_24xx_process_atio_queue(vha, 1);
2798                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
2799                         break;
2800                 }
2801                 case INTR_ATIO_RSP_QUE_UPDATE: {
2802                         unsigned long flags2;
2803                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
2804                         qlt_24xx_process_atio_queue(vha, 1);
2805                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
2806
2807                         qla24xx_process_response_queue(vha, rsp);
2808                         break;
2809                 }
2810                 default:
2811                         ql_dbg(ql_dbg_async, vha, 0x504f,
2812                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
2813                         break;
2814                 }
2815                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2816                 RD_REG_DWORD_RELAXED(&reg->hccr);
2817                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
2818                         ndelay(3500);
2819         }
2820         qla2x00_handle_mbx_completion(ha, status);
2821         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2822
2823         return IRQ_HANDLED;
2824 }
2825
2826 static irqreturn_t
2827 qla24xx_msix_rsp_q(int irq, void *dev_id)
2828 {
2829         struct qla_hw_data *ha;
2830         struct rsp_que *rsp;
2831         struct device_reg_24xx __iomem *reg;
2832         struct scsi_qla_host *vha;
2833         unsigned long flags;
2834         uint32_t stat = 0;
2835
2836         rsp = (struct rsp_que *) dev_id;
2837         if (!rsp) {
2838                 ql_log(ql_log_info, NULL, 0x505a,
2839                     "%s: NULL response queue pointer.\n", __func__);
2840                 return IRQ_NONE;
2841         }
2842         ha = rsp->hw;
2843         reg = &ha->iobase->isp24;
2844
2845         spin_lock_irqsave(&ha->hardware_lock, flags);
2846
2847         vha = pci_get_drvdata(ha->pdev);
2848         /*
2849          * Use host_status register to check to PCI disconnection before we
2850          * we process the response queue.
2851          */
2852         stat = RD_REG_DWORD(&reg->host_status);
2853         if (qla2x00_check_reg32_for_disconnect(vha, stat))
2854                 goto out;
2855         qla24xx_process_response_queue(vha, rsp);
2856         if (!ha->flags.disable_msix_handshake) {
2857                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2858                 RD_REG_DWORD_RELAXED(&reg->hccr);
2859         }
2860 out:
2861         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2862
2863         return IRQ_HANDLED;
2864 }
2865
2866 static irqreturn_t
2867 qla24xx_msix_default(int irq, void *dev_id)
2868 {
2869         scsi_qla_host_t *vha;
2870         struct qla_hw_data *ha;
2871         struct rsp_que *rsp;
2872         struct device_reg_24xx __iomem *reg;
2873         int             status;
2874         uint32_t        stat;
2875         uint32_t        hccr;
2876         uint16_t        mb[8];
2877         unsigned long flags;
2878
2879         rsp = (struct rsp_que *) dev_id;
2880         if (!rsp) {
2881                 ql_log(ql_log_info, NULL, 0x505c,
2882                     "%s: NULL response queue pointer.\n", __func__);
2883                 return IRQ_NONE;
2884         }
2885         ha = rsp->hw;
2886         reg = &ha->iobase->isp24;
2887         status = 0;
2888
2889         spin_lock_irqsave(&ha->hardware_lock, flags);
2890         vha = pci_get_drvdata(ha->pdev);
2891         do {
2892                 stat = RD_REG_DWORD(&reg->host_status);
2893                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
2894                         break;
2895                 if (stat & HSRX_RISC_PAUSED) {
2896                         if (unlikely(pci_channel_offline(ha->pdev)))
2897                                 break;
2898
2899                         hccr = RD_REG_DWORD(&reg->hccr);
2900
2901                         ql_log(ql_log_info, vha, 0x5050,
2902                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2903                             hccr);
2904
2905                         qla2xxx_check_risc_status(vha);
2906
2907                         ha->isp_ops->fw_dump(vha, 1);
2908                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2909                         break;
2910                 } else if ((stat & HSRX_RISC_INT) == 0)
2911                         break;
2912
2913                 switch (stat & 0xff) {
2914                 case INTR_ROM_MB_SUCCESS:
2915                 case INTR_ROM_MB_FAILED:
2916                 case INTR_MB_SUCCESS:
2917                 case INTR_MB_FAILED:
2918                         qla24xx_mbx_completion(vha, MSW(stat));
2919                         status |= MBX_INTERRUPT;
2920
2921                         break;
2922                 case INTR_ASYNC_EVENT:
2923                         mb[0] = MSW(stat);
2924                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2925                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2926                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2927                         qla2x00_async_event(vha, rsp, mb);
2928                         break;
2929                 case INTR_RSP_QUE_UPDATE:
2930                 case INTR_RSP_QUE_UPDATE_83XX:
2931                         qla24xx_process_response_queue(vha, rsp);
2932                         break;
2933                 case INTR_ATIO_QUE_UPDATE:{
2934                         unsigned long flags2;
2935                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
2936                         qlt_24xx_process_atio_queue(vha, 1);
2937                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
2938                         break;
2939                 }
2940                 case INTR_ATIO_RSP_QUE_UPDATE: {
2941                         unsigned long flags2;
2942                         spin_lock_irqsave(&ha->tgt.atio_lock, flags2);
2943                         qlt_24xx_process_atio_queue(vha, 1);
2944                         spin_unlock_irqrestore(&ha->tgt.atio_lock, flags2);
2945
2946                         qla24xx_process_response_queue(vha, rsp);
2947                         break;
2948                 }
2949                 default:
2950                         ql_dbg(ql_dbg_async, vha, 0x5051,
2951                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
2952                         break;
2953                 }
2954                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2955         } while (0);
2956         qla2x00_handle_mbx_completion(ha, status);
2957         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2958
2959         return IRQ_HANDLED;
2960 }
2961
2962 irqreturn_t
2963 qla2xxx_msix_rsp_q(int irq, void *dev_id)
2964 {
2965         struct qla_hw_data *ha;
2966         struct qla_qpair *qpair;
2967         struct device_reg_24xx __iomem *reg;
2968         unsigned long flags;
2969
2970         qpair = dev_id;
2971         if (!qpair) {
2972                 ql_log(ql_log_info, NULL, 0x505b,
2973                     "%s: NULL response queue pointer.\n", __func__);
2974                 return IRQ_NONE;
2975         }
2976         ha = qpair->hw;
2977
2978         /* Clear the interrupt, if enabled, for this response queue */
2979         if (unlikely(!ha->flags.disable_msix_handshake)) {
2980                 reg = &ha->iobase->isp24;
2981                 spin_lock_irqsave(&ha->hardware_lock, flags);
2982                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2983                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2984         }
2985
2986         queue_work(ha->wq, &qpair->q_work);
2987
2988         return IRQ_HANDLED;
2989 }
2990
2991 /* Interrupt handling helpers. */
2992
2993 struct qla_init_msix_entry {
2994         const char *name;
2995         irq_handler_t handler;
2996 };
2997
2998 static struct qla_init_msix_entry msix_entries[] = {
2999         { "qla2xxx (default)", qla24xx_msix_default },
3000         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
3001         { "qla2xxx (atio_q)", qla83xx_msix_atio_q },
3002         { "qla2xxx (qpair_multiq)", qla2xxx_msix_rsp_q },
3003 };
3004
3005 static struct qla_init_msix_entry qla82xx_msix_entries[] = {
3006         { "qla2xxx (default)", qla82xx_msix_default },
3007         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3008 };
3009
3010 static int
3011 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3012 {
3013         int i, ret;
3014         struct qla_msix_entry *qentry;
3015         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3016         struct irq_affinity desc = {
3017                 .pre_vectors = QLA_BASE_VECTORS,
3018         };
3019
3020         if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha))
3021                 desc.pre_vectors++;
3022
3023         ret = pci_alloc_irq_vectors_affinity(ha->pdev, QLA_BASE_VECTORS,
3024                         ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3025                         &desc);
3026
3027         if (ret < 0) {
3028                 ql_log(ql_log_fatal, vha, 0x00c7,
3029                     "MSI-X: Failed to enable support, "
3030                     "giving   up -- %d/%d.\n",
3031                     ha->msix_count, ret);
3032                 goto msix_out;
3033         } else if (ret < ha->msix_count) {
3034                 ql_log(ql_log_warn, vha, 0x00c6,
3035                     "MSI-X: Failed to enable support "
3036                      "with %d vectors, using %d vectors.\n",
3037                     ha->msix_count, ret);
3038                 ha->msix_count = ret;
3039                 /* Recalculate queue values */
3040                 if (ha->mqiobase && ql2xmqsupport) {
3041                         ha->max_req_queues = ha->msix_count - 1;
3042
3043                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3044                         if (QLA_TGT_MODE_ENABLED())
3045                                 ha->max_req_queues--;
3046
3047                         ha->max_rsp_queues = ha->max_req_queues;
3048
3049                         ha->max_qpairs = ha->max_req_queues - 1;
3050                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3051                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3052                 }
3053         }
3054         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
3055                                 ha->msix_count, GFP_KERNEL);
3056         if (!ha->msix_entries) {
3057                 ql_log(ql_log_fatal, vha, 0x00c8,
3058                     "Failed to allocate memory for ha->msix_entries.\n");
3059                 ret = -ENOMEM;
3060                 goto msix_out;
3061         }
3062         ha->flags.msix_enabled = 1;
3063
3064         for (i = 0; i < ha->msix_count; i++) {
3065                 qentry = &ha->msix_entries[i];
3066                 qentry->vector = pci_irq_vector(ha->pdev, i);
3067                 qentry->entry = i;
3068                 qentry->have_irq = 0;
3069                 qentry->in_use = 0;
3070                 qentry->handle = NULL;
3071         }
3072
3073         /* Enable MSI-X vectors for the base queue */
3074         for (i = 0; i < QLA_BASE_VECTORS; i++) {
3075                 qentry = &ha->msix_entries[i];
3076                 qentry->handle = rsp;
3077                 rsp->msix = qentry;
3078                 scnprintf(qentry->name, sizeof(qentry->name),
3079                     msix_entries[i].name);
3080                 if (IS_P3P_TYPE(ha))
3081                         ret = request_irq(qentry->vector,
3082                                 qla82xx_msix_entries[i].handler,
3083                                 0, qla82xx_msix_entries[i].name, rsp);
3084                 else
3085                         ret = request_irq(qentry->vector,
3086                                 msix_entries[i].handler,
3087                                 0, msix_entries[i].name, rsp);
3088                 if (ret)
3089                         goto msix_register_fail;
3090                 qentry->have_irq = 1;
3091                 qentry->in_use = 1;
3092         }
3093
3094         /*
3095          * If target mode is enable, also request the vector for the ATIO
3096          * queue.
3097          */
3098         if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) {
3099                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
3100                 rsp->msix = qentry;
3101                 qentry->handle = rsp;
3102                 scnprintf(qentry->name, sizeof(qentry->name),
3103                     msix_entries[QLA_ATIO_VECTOR].name);
3104                 qentry->in_use = 1;
3105                 ret = request_irq(qentry->vector,
3106                         msix_entries[QLA_ATIO_VECTOR].handler,
3107                         0, msix_entries[QLA_ATIO_VECTOR].name, rsp);
3108                 qentry->have_irq = 1;
3109         }
3110
3111 msix_register_fail:
3112         if (ret) {
3113                 ql_log(ql_log_fatal, vha, 0x00cb,
3114                     "MSI-X: unable to register handler -- %x/%d.\n",
3115                     qentry->vector, ret);
3116                 qla2x00_free_irqs(vha);
3117                 ha->mqenable = 0;
3118                 goto msix_out;
3119         }
3120
3121         /* Enable MSI-X vector for response queue update for queue 0 */
3122         if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
3123                 if (ha->msixbase && ha->mqiobase &&
3124                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3125                      ql2xmqsupport))
3126                         ha->mqenable = 1;
3127         } else
3128                 if (ha->mqiobase &&
3129                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3130                      ql2xmqsupport))
3131                         ha->mqenable = 1;
3132         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3133             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3134             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3135         ql_dbg(ql_dbg_init, vha, 0x0055,
3136             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3137             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3138
3139 msix_out:
3140         return ret;
3141 }
3142
3143 int
3144 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3145 {
3146         int ret = QLA_FUNCTION_FAILED;
3147         device_reg_t *reg = ha->iobase;
3148         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3149
3150         /* If possible, enable MSI-X. */
3151         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3152             !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) && !IS_QLAFX00(ha) &&
3153             !IS_QLA27XX(ha))
3154                 goto skip_msi;
3155
3156         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3157                 (ha->pdev->subsystem_device == 0x7040 ||
3158                 ha->pdev->subsystem_device == 0x7041 ||
3159                 ha->pdev->subsystem_device == 0x1705)) {
3160                 ql_log(ql_log_warn, vha, 0x0034,
3161                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3162                         ha->pdev->subsystem_vendor,
3163                         ha->pdev->subsystem_device);
3164                 goto skip_msi;
3165         }
3166
3167         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3168                 ql_log(ql_log_warn, vha, 0x0035,
3169                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3170                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3171                 goto skip_msix;
3172         }
3173
3174         ret = qla24xx_enable_msix(ha, rsp);
3175         if (!ret) {
3176                 ql_dbg(ql_dbg_init, vha, 0x0036,
3177                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3178                     ha->chip_revision, ha->fw_attributes);
3179                 goto clear_risc_ints;
3180         }
3181
3182 skip_msix:
3183
3184         ql_log(ql_log_info, vha, 0x0037,
3185             "Falling back-to MSI mode -%d.\n", ret);
3186
3187         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3188             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3189             !IS_QLA27XX(ha))
3190                 goto skip_msi;
3191
3192         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
3193         if (!ret) {
3194                 ql_dbg(ql_dbg_init, vha, 0x0038,
3195                     "MSI: Enabled.\n");
3196                 ha->flags.msi_enabled = 1;
3197         } else
3198                 ql_log(ql_log_warn, vha, 0x0039,
3199                     "Falling back-to INTa mode -- %d.\n", ret);
3200 skip_msi:
3201
3202         /* Skip INTx on ISP82xx. */
3203         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3204                 return QLA_FUNCTION_FAILED;
3205
3206         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3207             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3208             QLA2XXX_DRIVER_NAME, rsp);
3209         if (ret) {
3210                 ql_log(ql_log_warn, vha, 0x003a,
3211                     "Failed to reserve interrupt %d already in use.\n",
3212                     ha->pdev->irq);
3213                 goto fail;
3214         } else if (!ha->flags.msi_enabled) {
3215                 ql_dbg(ql_dbg_init, vha, 0x0125,
3216                     "INTa mode: Enabled.\n");
3217                 ha->flags.mr_intr_valid = 1;
3218         }
3219
3220 clear_risc_ints:
3221         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3222                 goto fail;
3223
3224         spin_lock_irq(&ha->hardware_lock);
3225         WRT_REG_WORD(&reg->isp.semaphore, 0);
3226         spin_unlock_irq(&ha->hardware_lock);
3227
3228 fail:
3229         return ret;
3230 }
3231
3232 void
3233 qla2x00_free_irqs(scsi_qla_host_t *vha)
3234 {
3235         struct qla_hw_data *ha = vha->hw;
3236         struct rsp_que *rsp;
3237         struct qla_msix_entry *qentry;
3238         int i;
3239
3240         /*
3241          * We need to check that ha->rsp_q_map is valid in case we are called
3242          * from a probe failure context.
3243          */
3244         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3245                 return;
3246         rsp = ha->rsp_q_map[0];
3247
3248         if (ha->flags.msix_enabled) {
3249                 for (i = 0; i < ha->msix_count; i++) {
3250                         qentry = &ha->msix_entries[i];
3251                         if (qentry->have_irq) {
3252                                 irq_set_affinity_notifier(qentry->vector, NULL);
3253                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
3254                         }
3255                 }
3256                 kfree(ha->msix_entries);
3257                 ha->msix_entries = NULL;
3258                 ha->flags.msix_enabled = 0;
3259                 ql_dbg(ql_dbg_init, vha, 0x0042,
3260                         "Disabled MSI-X.\n");
3261         } else {
3262                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
3263         }
3264
3265         pci_free_irq_vectors(ha->pdev);
3266 }
3267
3268 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
3269         struct qla_msix_entry *msix, int vector_type)
3270 {
3271         struct qla_init_msix_entry *intr = &msix_entries[vector_type];
3272         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3273         int ret;
3274
3275         scnprintf(msix->name, sizeof(msix->name),
3276             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
3277         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
3278         if (ret) {
3279                 ql_log(ql_log_fatal, vha, 0x00e6,
3280                     "MSI-X: Unable to register handler -- %x/%d.\n",
3281                     msix->vector, ret);
3282                 return ret;
3283         }
3284         msix->have_irq = 1;
3285         msix->handle = qpair;
3286         return ret;
3287 }