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 <scsi/scsi_tcq.h>
  13 #include <scsi/scsi_bsg_fc.h>
  14 #include <scsi/scsi_eh.h>
  15
  16 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  17 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  18 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  19 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  20         sts_entry_t *);
  21
  22 /**
  23  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  24  * @irq:
  25  * @dev_id: SCSI driver HA context
  26  *
  27  * Called by system whenever the host adapter generates an interrupt.
  28  *
  29  * Returns handled flag.
  30  */
  31 irqreturn_t
  32 qla2100_intr_handler(int irq, void *dev_id)
  33 {
  34         scsi_qla_host_t *vha;
  35         struct qla_hw_data *ha;
  36         struct device_reg_2xxx __iomem *reg;
  37         int             status;
  38         unsigned long   iter;
  39         uint16_t        hccr;
  40         uint16_t        mb[4];
  41         struct rsp_que *rsp;
  42         unsigned long   flags;
  43
  44         rsp = (struct rsp_que *) dev_id;
  45         if (!rsp) {
  46                 ql_log(ql_log_info, NULL, 0x505d,
  47                     "%s: NULL response queue pointer.\n", __func__);
  48                 return (IRQ_NONE);
  49         }
  50
  51         ha = rsp->hw;
  52         reg = &ha->iobase->isp;
  53         status = 0;
  54
  55         spin_lock_irqsave(&ha->hardware_lock, flags);
  56         vha = pci_get_drvdata(ha->pdev);
  57         for (iter = 50; iter--; ) {
  58                 hccr = RD_REG_WORD(&reg->hccr);
  59                 if (qla2x00_check_reg16_for_disconnect(vha, hccr))
  60                         break;
  61                 if (hccr & HCCR_RISC_PAUSE) {
  62                         if (pci_channel_offline(ha->pdev))
  63                                 break;
  64
  65                         /*
  66                          * Issue a "HARD" reset in order for the RISC interrupt
  67                          * bit to be cleared.  Schedule a big hammer to get
  68                          * out of the RISC PAUSED state.
  69                          */
  70                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  71                         RD_REG_WORD(&reg->hccr);
  72
  73                         ha->isp_ops->fw_dump(vha, 1);
  74                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  75                         break;
  76                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  77                         break;
  78
  79                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  80                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  81                         RD_REG_WORD(&reg->hccr);
  82
  83                         /* Get mailbox data. */
  84                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  85                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  86                                 qla2x00_mbx_completion(vha, mb[0]);
  87                                 status |= MBX_INTERRUPT;
  88                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  89                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  90                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  91                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  92                                 qla2x00_async_event(vha, rsp, mb);
  93                         } else {
  94                                 /*EMPTY*/
  95                                 ql_dbg(ql_dbg_async, vha, 0x5025,
  96                                     "Unrecognized interrupt type (%d).\n",
  97                                     mb[0]);
  98                         }
  99                         /* Release mailbox registers. */
 100                         WRT_REG_WORD(&reg->semaphore, 0);
 101                         RD_REG_WORD(&reg->semaphore);
 102                 } else {
 103                         qla2x00_process_response_queue(rsp);
 104
 105                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 106                         RD_REG_WORD(&reg->hccr);
 107                 }
 108         }
 109         qla2x00_handle_mbx_completion(ha, status);
 110         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 111
 112         return (IRQ_HANDLED);
 113 }
 114
 115 bool
 116 qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
 117 {
 118         /* Check for PCI disconnection */
 119         if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
 120                 if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
 121                     !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
 122                     !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
 123                         /*
 124                          * Schedule this (only once) on the default system
 125                          * workqueue so that all the adapter workqueues and the
 126                          * DPC thread can be shutdown cleanly.
 127                          */
 128                         schedule_work(&vha->hw->board_disable);
 129                 }
 130                 return true;
 131         } else
 132                 return false;
 133 }
 134
 135 bool
 136 qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
 137 {
 138         return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
 139 }
 140
 141 /**
 142  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 143  * @irq:
 144  * @dev_id: SCSI driver HA context
 145  *
 146  * Called by system whenever the host adapter generates an interrupt.
 147  *
 148  * Returns handled flag.
 149  */
 150 irqreturn_t
 151 qla2300_intr_handler(int irq, void *dev_id)
 152 {
 153         scsi_qla_host_t *vha;
 154         struct device_reg_2xxx __iomem *reg;
 155         int             status;
 156         unsigned long   iter;
 157         uint32_t        stat;
 158         uint16_t        hccr;
 159         uint16_t        mb[4];
 160         struct rsp_que *rsp;
 161         struct qla_hw_data *ha;
 162         unsigned long   flags;
 163
 164         rsp = (struct rsp_que *) dev_id;
 165         if (!rsp) {
 166                 ql_log(ql_log_info, NULL, 0x5058,
 167                     "%s: NULL response queue pointer.\n", __func__);
 168                 return (IRQ_NONE);
 169         }
 170
 171         ha = rsp->hw;
 172         reg = &ha->iobase->isp;
 173         status = 0;
 174
 175         spin_lock_irqsave(&ha->hardware_lock, flags);
 176         vha = pci_get_drvdata(ha->pdev);
 177         for (iter = 50; iter--; ) {
 178                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 179                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
 180                         break;
 181                 if (stat & HSR_RISC_PAUSED) {
 182                         if (unlikely(pci_channel_offline(ha->pdev)))
 183                                 break;
 184
 185                         hccr = RD_REG_WORD(&reg->hccr);
 186
 187                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 188                                 ql_log(ql_log_warn, vha, 0x5026,
 189                                     "Parity error -- HCCR=%x, Dumping "
 190                                     "firmware.\n", hccr);
 191                         else
 192                                 ql_log(ql_log_warn, vha, 0x5027,
 193                                     "RISC paused -- HCCR=%x, Dumping "
 194                                     "firmware.\n", hccr);
 195
 196                         /*
 197                          * Issue a "HARD" reset in order for the RISC
 198                          * interrupt bit to be cleared.  Schedule a big
 199                          * hammer to get out of the RISC PAUSED state.
 200                          */
 201                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 202                         RD_REG_WORD(&reg->hccr);
 203
 204                         ha->isp_ops->fw_dump(vha, 1);
 205                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 206                         break;
 207                 } else if ((stat & HSR_RISC_INT) == 0)
 208                         break;
 209
 210                 switch (stat & 0xff) {
 211                 case 0x1:
 212                 case 0x2:
 213                 case 0x10:
 214                 case 0x11:
 215                         qla2x00_mbx_completion(vha, MSW(stat));
 216                         status |= MBX_INTERRUPT;
 217
 218                         /* Release mailbox registers. */
 219                         WRT_REG_WORD(&reg->semaphore, 0);
 220                         break;
 221                 case 0x12:
 222                         mb[0] = MSW(stat);
 223                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 224                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 225                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 226                         qla2x00_async_event(vha, rsp, mb);
 227                         break;
 228                 case 0x13:
 229                         qla2x00_process_response_queue(rsp);
 230                         break;
 231                 case 0x15:
 232                         mb[0] = MBA_CMPLT_1_16BIT;
 233                         mb[1] = MSW(stat);
 234                         qla2x00_async_event(vha, rsp, mb);
 235                         break;
 236                 case 0x16:
 237                         mb[0] = MBA_SCSI_COMPLETION;
 238                         mb[1] = MSW(stat);
 239                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 240                         qla2x00_async_event(vha, rsp, mb);
 241                         break;
 242                 default:
 243                         ql_dbg(ql_dbg_async, vha, 0x5028,
 244                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 245                         break;
 246                 }
 247                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 248                 RD_REG_WORD_RELAXED(&reg->hccr);
 249         }
 250         qla2x00_handle_mbx_completion(ha, status);
 251         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 252
 253         return (IRQ_HANDLED);
 254 }
 255
 256 /**
 257  * qla2x00_mbx_completion() - Process mailbox command completions.
 258  * @ha: SCSI driver HA context
 259  * @mb0: Mailbox0 register
 260  */
 261 static void
 262 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 263 {
 264         uint16_t        cnt;
 265         uint32_t        mboxes;
 266         uint16_t __iomem *wptr;
 267         struct qla_hw_data *ha = vha->hw;
 268         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 269
 270         /* Read all mbox registers? */
 271         WARN_ON_ONCE(ha->mbx_count > 32);
 272         mboxes = (1ULL << 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.\n");
 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.\n");
 718
 719                 break;
 720         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 721                 ql_dbg(ql_dbg_async, vha, 0x5009,
 722                     "LIP occurred (%x).\n", mb[1]);
 723
 724                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 725                         atomic_set(&vha->loop_state, LOOP_DOWN);
 726                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 727                         qla2x00_mark_all_devices_lost(vha, 1);
 728                 }
 729
 730                 if (vha->vp_idx) {
 731                         atomic_set(&vha->vp_state, VP_FAILED);
 732                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 733                 }
 734
 735                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 736                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 737
 738                 vha->flags.management_server_logged_in = 0;
 739                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 740                 break;
 741
 742         case MBA_LOOP_UP:               /* Loop Up Event */
 743                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 744                         ha->link_data_rate = PORT_SPEED_1GB;
 745                 else
 746                         ha->link_data_rate = mb[1];
 747
 748                 ql_log(ql_log_info, vha, 0x500a,
 749                     "LOOP UP detected (%s Gbps).\n",
 750                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 751
 752                 vha->flags.management_server_logged_in = 0;
 753                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 754                 break;
 755
 756         case MBA_LOOP_DOWN:             /* Loop Down Event */
 757                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 758                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 759                 mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
 760                         : mbx;
 761                 ql_log(ql_log_info, vha, 0x500b,
 762                     "LOOP DOWN detected (%x %x %x %x).\n",
 763                     mb[1], mb[2], mb[3], mbx);
 764
 765                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 766                         atomic_set(&vha->loop_state, LOOP_DOWN);
 767                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 768                         /*
 769                          * In case of loop down, restore WWPN from
 770                          * NVRAM in case of FA-WWPN capable ISP
 771                          * Restore for Physical Port only
 772                          */
 773                         if (!vha->vp_idx) {
 774                                 if (ha->flags.fawwpn_enabled) {
 775                                         void *wwpn = ha->init_cb->port_name;
 776                                         memcpy(vha->port_name, wwpn, WWN_SIZE);
 777                                         fc_host_port_name(vha->host) =
 778                                             wwn_to_u64(vha->port_name);
 779                                         ql_dbg(ql_dbg_init + ql_dbg_verbose,
 780                                             vha, 0x0144, "LOOP DOWN detected,"
 781                                             "restore WWPN %016llx\n",
 782                                             wwn_to_u64(vha->port_name));
 783                                 }
 784
 785                                 clear_bit(VP_CONFIG_OK, &vha->vp_flags);
 786                         }
 787
 788                         vha->device_flags |= DFLG_NO_CABLE;
 789                         qla2x00_mark_all_devices_lost(vha, 1);
 790                 }
 791
 792                 if (vha->vp_idx) {
 793                         atomic_set(&vha->vp_state, VP_FAILED);
 794                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 795                 }
 796
 797                 vha->flags.management_server_logged_in = 0;
 798                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 799                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 800                 break;
 801
 802         case MBA_LIP_RESET:             /* LIP reset occurred */
 803                 ql_dbg(ql_dbg_async, vha, 0x500c,
 804                     "LIP reset occurred (%x).\n", mb[1]);
 805
 806                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 807                         atomic_set(&vha->loop_state, LOOP_DOWN);
 808                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 809                         qla2x00_mark_all_devices_lost(vha, 1);
 810                 }
 811
 812                 if (vha->vp_idx) {
 813                         atomic_set(&vha->vp_state, VP_FAILED);
 814                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 815                 }
 816
 817                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 818
 819                 ha->operating_mode = LOOP;
 820                 vha->flags.management_server_logged_in = 0;
 821                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 822                 break;
 823
 824         /* case MBA_DCBX_COMPLETE: */
 825         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 826                 if (IS_QLA2100(ha))
 827                         break;
 828
 829                 if (IS_CNA_CAPABLE(ha)) {
 830                         ql_dbg(ql_dbg_async, vha, 0x500d,
 831                             "DCBX Completed -- %04x %04x %04x.\n",
 832                             mb[1], mb[2], mb[3]);
 833                         if (ha->notify_dcbx_comp && !vha->vp_idx)
 834                                 complete(&ha->dcbx_comp);
 835
 836                 } else
 837                         ql_dbg(ql_dbg_async, vha, 0x500e,
 838                             "Asynchronous P2P MODE received.\n");
 839
 840                 /*
 841                  * Until there's a transition from loop down to loop up, treat
 842                  * this as loop down only.
 843                  */
 844                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 845                         atomic_set(&vha->loop_state, LOOP_DOWN);
 846                         if (!atomic_read(&vha->loop_down_timer))
 847                                 atomic_set(&vha->loop_down_timer,
 848                                     LOOP_DOWN_TIME);
 849                         qla2x00_mark_all_devices_lost(vha, 1);
 850                 }
 851
 852                 if (vha->vp_idx) {
 853                         atomic_set(&vha->vp_state, VP_FAILED);
 854                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 855                 }
 856
 857                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 858                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 859
 860                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 861                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 862
 863                 ha->flags.gpsc_supported = 1;
 864                 vha->flags.management_server_logged_in = 0;
 865                 break;
 866
 867         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 868                 if (IS_QLA2100(ha))
 869                         break;
 870
 871                 ql_dbg(ql_dbg_async, vha, 0x500f,
 872                     "Configuration change detected: value=%x.\n", mb[1]);
 873
 874                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 875                         atomic_set(&vha->loop_state, LOOP_DOWN);
 876                         if (!atomic_read(&vha->loop_down_timer))
 877                                 atomic_set(&vha->loop_down_timer,
 878                                     LOOP_DOWN_TIME);
 879                         qla2x00_mark_all_devices_lost(vha, 1);
 880                 }
 881
 882                 if (vha->vp_idx) {
 883                         atomic_set(&vha->vp_state, VP_FAILED);
 884                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 885                 }
 886
 887                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 888                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 889                 break;
 890
 891         case MBA_PORT_UPDATE:           /* Port database update */
 892                 /*
 893                  * Handle only global and vn-port update events
 894                  *
 895                  * Relevant inputs:
 896                  * mb[1] = N_Port handle of changed port
 897                  * OR 0xffff for global event
 898                  * mb[2] = New login state
 899                  * 7 = Port logged out
 900                  * mb[3] = LSB is vp_idx, 0xff = all vps
 901                  *
 902                  * Skip processing if:
 903                  *       Event is global, vp_idx is NOT all vps,
 904                  *           vp_idx does not match
 905                  *       Event is not global, vp_idx does not match
 906                  */
 907                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 908                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 909                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 910                         break;
 911
 912                 if (mb[2] == 0x7) {
 913                         ql_dbg(ql_dbg_async, vha, 0x5010,
 914                             "Port %s %04x %04x %04x.\n",
 915                             mb[1] == 0xffff ? "unavailable" : "logout",
 916                             mb[1], mb[2], mb[3]);
 917
 918                         if (mb[1] == 0xffff)
 919                                 goto global_port_update;
 920
 921                         /* Port logout */
 922                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
 923                         if (!fcport)
 924                                 break;
 925                         if (atomic_read(&fcport->state) != FCS_ONLINE)
 926                                 break;
 927                         ql_dbg(ql_dbg_async, vha, 0x508a,
 928                             "Marking port lost loopid=%04x portid=%06x.\n",
 929                             fcport->loop_id, fcport->d_id.b24);
 930                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
 931                         break;
 932
 933 global_port_update:
 934                         /* Port unavailable. */
 935                         ql_log(ql_log_warn, vha, 0x505e,
 936                             "Link is offline.\n");
 937
 938                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 939                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 940                                 atomic_set(&vha->loop_down_timer,
 941                                     LOOP_DOWN_TIME);
 942                                 vha->device_flags |= DFLG_NO_CABLE;
 943                                 qla2x00_mark_all_devices_lost(vha, 1);
 944                         }
 945
 946                         if (vha->vp_idx) {
 947                                 atomic_set(&vha->vp_state, VP_FAILED);
 948                                 fc_vport_set_state(vha->fc_vport,
 949                                     FC_VPORT_FAILED);
 950                                 qla2x00_mark_all_devices_lost(vha, 1);
 951                         }
 952
 953                         vha->flags.management_server_logged_in = 0;
 954                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 955                         break;
 956                 }
 957
 958                 /*
 959                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 960                  * event etc. earlier indicating loop is down) then process
 961                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 962                  */
 963                 atomic_set(&vha->loop_down_timer, 0);
 964                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
 965                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
 966                         ql_dbg(ql_dbg_async, vha, 0x5011,
 967                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
 968                             mb[1], mb[2], mb[3]);
 969                         break;
 970                 }
 971
 972                 ql_dbg(ql_dbg_async, vha, 0x5012,
 973                     "Port database changed %04x %04x %04x.\n",
 974                     mb[1], mb[2], mb[3]);
 975
 976                 /*
 977                  * Mark all devices as missing so we will login again.
 978                  */
 979                 atomic_set(&vha->loop_state, LOOP_UP);
 980
 981                 qla2x00_mark_all_devices_lost(vha, 1);
 982
 983                 if (vha->vp_idx == 0 && !qla_ini_mode_enabled(vha))
 984                         set_bit(SCR_PENDING, &vha->dpc_flags);
 985
 986                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 987                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 988                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
 989                 break;
 990
 991         case MBA_RSCN_UPDATE:           /* State Change Registration */
 992                 /* Check if the Vport has issued a SCR */
 993                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
 994                         break;
 995                 /* Only handle SCNs for our Vport index. */
 996                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
 997                         break;
 998
 999                 ql_dbg(ql_dbg_async, vha, 0x5013,
1000                     "RSCN database changed -- %04x %04x %04x.\n",
1001                     mb[1], mb[2], mb[3]);
1002
1003                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1004                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1005                                 | vha->d_id.b.al_pa;
1006                 if (rscn_entry == host_pid) {
1007                         ql_dbg(ql_dbg_async, vha, 0x5014,
1008                             "Ignoring RSCN update to local host "
1009                             "port ID (%06x).\n", host_pid);
1010                         break;
1011                 }
1012
1013                 /* Ignore reserved bits from RSCN-payload. */
1014                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1015
1016                 /* Skip RSCNs for virtual ports on the same physical port */
1017                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1018                         break;
1019
1020                 /*
1021                  * Search for the rport related to this RSCN entry and mark it
1022                  * as lost.
1023                  */
1024                 list_for_each_entry(fcport, &vha->vp_fcports, list) {
1025                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1026                                 continue;
1027                         if (fcport->d_id.b24 == rscn_entry) {
1028                                 qla2x00_mark_device_lost(vha, fcport, 0, 0);
1029                                 break;
1030                         }
1031                 }
1032
1033                 atomic_set(&vha->loop_down_timer, 0);
1034                 vha->flags.management_server_logged_in = 0;
1035
1036                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1037                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
1038                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1039                 break;
1040
1041         /* case MBA_RIO_RESPONSE: */
1042         case MBA_ZIO_RESPONSE:
1043                 ql_dbg(ql_dbg_async, vha, 0x5015,
1044                     "[R|Z]IO update completion.\n");
1045
1046                 if (IS_FWI2_CAPABLE(ha))
1047                         qla24xx_process_response_queue(vha, rsp);
1048                 else
1049                         qla2x00_process_response_queue(rsp);
1050                 break;
1051
1052         case MBA_DISCARD_RND_FRAME:
1053                 ql_dbg(ql_dbg_async, vha, 0x5016,
1054                     "Discard RND Frame -- %04x %04x %04x.\n",
1055                     mb[1], mb[2], mb[3]);
1056                 break;
1057
1058         case MBA_TRACE_NOTIFICATION:
1059                 ql_dbg(ql_dbg_async, vha, 0x5017,
1060                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1061                 break;
1062
1063         case MBA_ISP84XX_ALERT:
1064                 ql_dbg(ql_dbg_async, vha, 0x5018,
1065                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1066                     mb[1], mb[2], mb[3]);
1067
1068                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1069                 switch (mb[1]) {
1070                 case A84_PANIC_RECOVERY:
1071                         ql_log(ql_log_info, vha, 0x5019,
1072                             "Alert 84XX: panic recovery %04x %04x.\n",
1073                             mb[2], mb[3]);
1074                         break;
1075                 case A84_OP_LOGIN_COMPLETE:
1076                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1077                         ql_log(ql_log_info, vha, 0x501a,
1078                             "Alert 84XX: firmware version %x.\n",
1079                             ha->cs84xx->op_fw_version);
1080                         break;
1081                 case A84_DIAG_LOGIN_COMPLETE:
1082                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1083                         ql_log(ql_log_info, vha, 0x501b,
1084                             "Alert 84XX: diagnostic firmware version %x.\n",
1085                             ha->cs84xx->diag_fw_version);
1086                         break;
1087                 case A84_GOLD_LOGIN_COMPLETE:
1088                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1089                         ha->cs84xx->fw_update = 1;
1090                         ql_log(ql_log_info, vha, 0x501c,
1091                             "Alert 84XX: gold firmware version %x.\n",
1092                             ha->cs84xx->gold_fw_version);
1093                         break;
1094                 default:
1095                         ql_log(ql_log_warn, vha, 0x501d,
1096                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1097                             mb[1], mb[2], mb[3]);
1098                 }
1099                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1100                 break;
1101         case MBA_DCBX_START:
1102                 ql_dbg(ql_dbg_async, vha, 0x501e,
1103                     "DCBX Started -- %04x %04x %04x.\n",
1104                     mb[1], mb[2], mb[3]);
1105                 break;
1106         case MBA_DCBX_PARAM_UPDATE:
1107                 ql_dbg(ql_dbg_async, vha, 0x501f,
1108                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1109                     mb[1], mb[2], mb[3]);
1110                 break;
1111         case MBA_FCF_CONF_ERR:
1112                 ql_dbg(ql_dbg_async, vha, 0x5020,
1113                     "FCF Configuration Error -- %04x %04x %04x.\n",
1114                     mb[1], mb[2], mb[3]);
1115                 break;
1116         case MBA_IDC_NOTIFY:
1117                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1118                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1119                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1120                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1121                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1122                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1123                                 /*
1124                                  * Extend loop down timer since port is active.
1125                                  */
1126                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1127                                         atomic_set(&vha->loop_down_timer,
1128                                             LOOP_DOWN_TIME);
1129                                 qla2xxx_wake_dpc(vha);
1130                         }
1131                 }
1132         case MBA_IDC_COMPLETE:
1133                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1134                         complete(&ha->lb_portup_comp);
1135                 /* Fallthru */
1136         case MBA_IDC_TIME_EXT:
1137                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1138                     IS_QLA8044(ha))
1139                         qla81xx_idc_event(vha, mb[0], mb[1]);
1140                 break;
1141
1142         case MBA_IDC_AEN:
1143                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1144                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1145                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1146                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1147                 qla83xx_handle_8200_aen(vha, mb);
1148                 break;
1149
1150         case MBA_DPORT_DIAGNOSTICS:
1151                 ql_dbg(ql_dbg_async, vha, 0x5052,
1152                     "D-Port Diagnostics: %04x %04x=%s\n", mb[0], mb[1],
1153                     mb[1] == 0 ? "start" :
1154                     mb[1] == 1 ? "done (ok)" :
1155                     mb[1] == 2 ? "done (error)" : "other");
1156                 break;
1157
1158         default:
1159                 ql_dbg(ql_dbg_async, vha, 0x5057,
1160                     "Unknown AEN:%04x %04x %04x %04x\n",
1161                     mb[0], mb[1], mb[2], mb[3]);
1162         }
1163
1164         qlt_async_event(mb[0], vha, mb);
1165
1166         if (!vha->vp_idx && ha->num_vhosts)
1167                 qla2x00_alert_all_vps(rsp, mb);
1168 }
1169
1170 /**
1171  * qla2x00_process_completed_request() - Process a Fast Post response.
1172  * @ha: SCSI driver HA context
1173  * @index: SRB index
1174  */
1175 void
1176 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1177                                   struct req_que *req, uint32_t index)
1178 {
1179         srb_t *sp;
1180         struct qla_hw_data *ha = vha->hw;
1181
1182         /* Validate handle. */
1183         if (index >= req->num_outstanding_cmds) {
1184                 ql_log(ql_log_warn, vha, 0x3014,
1185                     "Invalid SCSI command index (%x).\n", index);
1186
1187                 if (IS_P3P_TYPE(ha))
1188                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1189                 else
1190                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1191                 return;
1192         }
1193
1194         sp = req->outstanding_cmds[index];
1195         if (sp) {
1196                 /* Free outstanding command slot. */
1197                 req->outstanding_cmds[index] = NULL;
1198
1199                 /* Save ISP completion status */
1200                 sp->done(ha, sp, DID_OK << 16);
1201         } else {
1202                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1203
1204                 if (IS_P3P_TYPE(ha))
1205                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1206                 else
1207                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1208         }
1209 }
1210
1211 srb_t *
1212 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1213     struct req_que *req, void *iocb)
1214 {
1215         struct qla_hw_data *ha = vha->hw;
1216         sts_entry_t *pkt = iocb;
1217         srb_t *sp = NULL;
1218         uint16_t index;
1219
1220         index = LSW(pkt->handle);
1221         if (index >= req->num_outstanding_cmds) {
1222                 ql_log(ql_log_warn, vha, 0x5031,
1223                     "Invalid command index (%x).\n", index);
1224                 if (IS_P3P_TYPE(ha))
1225                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1226                 else
1227                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1228                 goto done;
1229         }
1230         sp = req->outstanding_cmds[index];
1231         if (!sp) {
1232                 ql_log(ql_log_warn, vha, 0x5032,
1233                     "Invalid completion handle (%x) -- timed-out.\n", index);
1234                 return sp;
1235         }
1236         if (sp->handle != index) {
1237                 ql_log(ql_log_warn, vha, 0x5033,
1238                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1239                 return NULL;
1240         }
1241
1242         req->outstanding_cmds[index] = NULL;
1243
1244 done:
1245         return sp;
1246 }
1247
1248 static void
1249 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1250     struct mbx_entry *mbx)
1251 {
1252         const char func[] = "MBX-IOCB";
1253         const char *type;
1254         fc_port_t *fcport;
1255         srb_t *sp;
1256         struct srb_iocb *lio;
1257         uint16_t *data;
1258         uint16_t status;
1259
1260         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1261         if (!sp)
1262                 return;
1263
1264         lio = &sp->u.iocb_cmd;
1265         type = sp->name;
1266         fcport = sp->fcport;
1267         data = lio->u.logio.data;
1268
1269         data[0] = MBS_COMMAND_ERROR;
1270         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1271             QLA_LOGIO_LOGIN_RETRIED : 0;
1272         if (mbx->entry_status) {
1273                 ql_dbg(ql_dbg_async, vha, 0x5043,
1274                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1275                     "entry-status=%x status=%x state-flag=%x "
1276                     "status-flags=%x.\n", type, sp->handle,
1277                     fcport->d_id.b.domain, fcport->d_id.b.area,
1278                     fcport->d_id.b.al_pa, mbx->entry_status,
1279                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1280                     le16_to_cpu(mbx->status_flags));
1281
1282                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1283                     (uint8_t *)mbx, sizeof(*mbx));
1284
1285                 goto logio_done;
1286         }
1287
1288         status = le16_to_cpu(mbx->status);
1289         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1290             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1291                 status = 0;
1292         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1293                 ql_dbg(ql_dbg_async, vha, 0x5045,
1294                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1295                     type, sp->handle, fcport->d_id.b.domain,
1296                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1297                     le16_to_cpu(mbx->mb1));
1298
1299                 data[0] = MBS_COMMAND_COMPLETE;
1300                 if (sp->type == SRB_LOGIN_CMD) {
1301                         fcport->port_type = FCT_TARGET;
1302                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1303                                 fcport->port_type = FCT_INITIATOR;
1304                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1305                                 fcport->flags |= FCF_FCP2_DEVICE;
1306                 }
1307                 goto logio_done;
1308         }
1309
1310         data[0] = le16_to_cpu(mbx->mb0);
1311         switch (data[0]) {
1312         case MBS_PORT_ID_USED:
1313                 data[1] = le16_to_cpu(mbx->mb1);
1314                 break;
1315         case MBS_LOOP_ID_USED:
1316                 break;
1317         default:
1318                 data[0] = MBS_COMMAND_ERROR;
1319                 break;
1320         }
1321
1322         ql_log(ql_log_warn, vha, 0x5046,
1323             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1324             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1325             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1326             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1327             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1328             le16_to_cpu(mbx->mb7));
1329
1330 logio_done:
1331         sp->done(vha, sp, 0);
1332 }
1333
1334 static void
1335 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1336     sts_entry_t *pkt, int iocb_type)
1337 {
1338         const char func[] = "CT_IOCB";
1339         const char *type;
1340         srb_t *sp;
1341         struct fc_bsg_job *bsg_job;
1342         uint16_t comp_status;
1343         int res;
1344
1345         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1346         if (!sp)
1347                 return;
1348
1349         bsg_job = sp->u.bsg_job;
1350
1351         type = "ct pass-through";
1352
1353         comp_status = le16_to_cpu(pkt->comp_status);
1354
1355         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1356          * fc payload  to the caller
1357          */
1358         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1359         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1360
1361         if (comp_status != CS_COMPLETE) {
1362                 if (comp_status == CS_DATA_UNDERRUN) {
1363                         res = DID_OK << 16;
1364                         bsg_job->reply->reply_payload_rcv_len =
1365                             le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1366
1367                         ql_log(ql_log_warn, vha, 0x5048,
1368                             "CT pass-through-%s error "
1369                             "comp_status-status=0x%x total_byte = 0x%x.\n",
1370                             type, comp_status,
1371                             bsg_job->reply->reply_payload_rcv_len);
1372                 } else {
1373                         ql_log(ql_log_warn, vha, 0x5049,
1374                             "CT pass-through-%s error "
1375                             "comp_status-status=0x%x.\n", type, comp_status);
1376                         res = DID_ERROR << 16;
1377                         bsg_job->reply->reply_payload_rcv_len = 0;
1378                 }
1379                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1380                     (uint8_t *)pkt, sizeof(*pkt));
1381         } else {
1382                 res = DID_OK << 16;
1383                 bsg_job->reply->reply_payload_rcv_len =
1384                     bsg_job->reply_payload.payload_len;
1385                 bsg_job->reply_len = 0;
1386         }
1387
1388         sp->done(vha, sp, res);
1389 }
1390
1391 static void
1392 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1393     struct sts_entry_24xx *pkt, int iocb_type)
1394 {
1395         const char func[] = "ELS_CT_IOCB";
1396         const char *type;
1397         srb_t *sp;
1398         struct fc_bsg_job *bsg_job;
1399         uint16_t comp_status;
1400         uint32_t fw_status[3];
1401         uint8_t* fw_sts_ptr;
1402         int res;
1403
1404         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1405         if (!sp)
1406                 return;
1407         bsg_job = sp->u.bsg_job;
1408
1409         type = NULL;
1410         switch (sp->type) {
1411         case SRB_ELS_CMD_RPT:
1412         case SRB_ELS_CMD_HST:
1413                 type = "els";
1414                 break;
1415         case SRB_CT_CMD:
1416                 type = "ct pass-through";
1417                 break;
1418         default:
1419                 ql_dbg(ql_dbg_user, vha, 0x503e,
1420                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1421                 return;
1422         }
1423
1424         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1425         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1426         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1427
1428         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1429          * fc payload  to the caller
1430          */
1431         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1432         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1433
1434         if (comp_status != CS_COMPLETE) {
1435                 if (comp_status == CS_DATA_UNDERRUN) {
1436                         res = DID_OK << 16;
1437                         bsg_job->reply->reply_payload_rcv_len =
1438                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1439
1440                         ql_dbg(ql_dbg_user, vha, 0x503f,
1441                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1442                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1443                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1444                             le16_to_cpu(((struct els_sts_entry_24xx *)
1445                                 pkt)->total_byte_count));
1446                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1447                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1448                 }
1449                 else {
1450                         ql_dbg(ql_dbg_user, vha, 0x5040,
1451                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1452                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1453                             type, sp->handle, comp_status,
1454                             le16_to_cpu(((struct els_sts_entry_24xx *)
1455                                 pkt)->error_subcode_1),
1456                             le16_to_cpu(((struct els_sts_entry_24xx *)
1457                                     pkt)->error_subcode_2));
1458                         res = DID_ERROR << 16;
1459                         bsg_job->reply->reply_payload_rcv_len = 0;
1460                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1461                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1462                 }
1463                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1464                                 (uint8_t *)pkt, sizeof(*pkt));
1465         }
1466         else {
1467                 res =  DID_OK << 16;
1468                 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1469                 bsg_job->reply_len = 0;
1470         }
1471
1472         sp->done(vha, sp, res);
1473 }
1474
1475 static void
1476 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1477     struct logio_entry_24xx *logio)
1478 {
1479         const char func[] = "LOGIO-IOCB";
1480         const char *type;
1481         fc_port_t *fcport;
1482         srb_t *sp;
1483         struct srb_iocb *lio;
1484         uint16_t *data;
1485         uint32_t iop[2];
1486
1487         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1488         if (!sp)
1489                 return;
1490
1491         lio = &sp->u.iocb_cmd;
1492         type = sp->name;
1493         fcport = sp->fcport;
1494         data = lio->u.logio.data;
1495
1496         data[0] = MBS_COMMAND_ERROR;
1497         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1498                 QLA_LOGIO_LOGIN_RETRIED : 0;
1499         if (logio->entry_status) {
1500                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1501                     "Async-%s error entry - hdl=%x"
1502                     "portid=%02x%02x%02x entry-status=%x.\n",
1503                     type, sp->handle, fcport->d_id.b.domain,
1504                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1505                     logio->entry_status);
1506                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1507                     (uint8_t *)logio, sizeof(*logio));
1508
1509                 goto logio_done;
1510         }
1511
1512         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1513                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1514                     "Async-%s complete - hdl=%x portid=%02x%02x%02x "
1515                     "iop0=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1516                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1517                     le32_to_cpu(logio->io_parameter[0]));
1518
1519                 data[0] = MBS_COMMAND_COMPLETE;
1520                 if (sp->type != SRB_LOGIN_CMD)
1521                         goto logio_done;
1522
1523                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1524                 if (iop[0] & BIT_4) {
1525                         fcport->port_type = FCT_TARGET;
1526                         if (iop[0] & BIT_8)
1527                                 fcport->flags |= FCF_FCP2_DEVICE;
1528                 } else if (iop[0] & BIT_5)
1529                         fcport->port_type = FCT_INITIATOR;
1530
1531                 if (iop[0] & BIT_7)
1532                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1533
1534                 if (logio->io_parameter[7] || logio->io_parameter[8])
1535                         fcport->supported_classes |= FC_COS_CLASS2;
1536                 if (logio->io_parameter[9] || logio->io_parameter[10])
1537                         fcport->supported_classes |= FC_COS_CLASS3;
1538
1539                 goto logio_done;
1540         }
1541
1542         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1543         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1544         switch (iop[0]) {
1545         case LSC_SCODE_PORTID_USED:
1546                 data[0] = MBS_PORT_ID_USED;
1547                 data[1] = LSW(iop[1]);
1548                 break;
1549         case LSC_SCODE_NPORT_USED:
1550                 data[0] = MBS_LOOP_ID_USED;
1551                 break;
1552         default:
1553                 data[0] = MBS_COMMAND_ERROR;
1554                 break;
1555         }
1556
1557         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1558             "Async-%s failed - hdl=%x portid=%02x%02x%02x comp=%x "
1559             "iop0=%x iop1=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1560             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1561             le16_to_cpu(logio->comp_status),
1562             le32_to_cpu(logio->io_parameter[0]),
1563             le32_to_cpu(logio->io_parameter[1]));
1564
1565 logio_done:
1566         sp->done(vha, sp, 0);
1567 }
1568
1569 static void
1570 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1571 {
1572         const char func[] = "TMF-IOCB";
1573         const char *type;
1574         fc_port_t *fcport;
1575         srb_t *sp;
1576         struct srb_iocb *iocb;
1577         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1578
1579         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1580         if (!sp)
1581                 return;
1582
1583         iocb = &sp->u.iocb_cmd;
1584         type = sp->name;
1585         fcport = sp->fcport;
1586         iocb->u.tmf.data = QLA_SUCCESS;
1587
1588         if (sts->entry_status) {
1589                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1590                     "Async-%s error - hdl=%x entry-status(%x).\n",
1591                     type, sp->handle, sts->entry_status);
1592                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1593         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1594                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1595                     "Async-%s error - hdl=%x completion status(%x).\n",
1596                     type, sp->handle, sts->comp_status);
1597                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1598         } else if ((le16_to_cpu(sts->scsi_status) &
1599             SS_RESPONSE_INFO_LEN_VALID)) {
1600                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1601                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1602                             "Async-%s error - hdl=%x not enough response(%d).\n",
1603                             type, sp->handle, sts->rsp_data_len);
1604                 } else if (sts->data[3]) {
1605                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1606                             "Async-%s error - hdl=%x response(%x).\n",
1607                             type, sp->handle, sts->data[3]);
1608                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1609                 }
1610         }
1611
1612         if (iocb->u.tmf.data != QLA_SUCCESS)
1613                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5055,
1614                     (uint8_t *)sts, sizeof(*sts));
1615
1616         sp->done(vha, sp, 0);
1617 }
1618
1619 /**
1620  * qla2x00_process_response_queue() - Process response queue entries.
1621  * @ha: SCSI driver HA context
1622  */
1623 void
1624 qla2x00_process_response_queue(struct rsp_que *rsp)
1625 {
1626         struct scsi_qla_host *vha;
1627         struct qla_hw_data *ha = rsp->hw;
1628         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1629         sts_entry_t     *pkt;
1630         uint16_t        handle_cnt;
1631         uint16_t        cnt;
1632
1633         vha = pci_get_drvdata(ha->pdev);
1634
1635         if (!vha->flags.online)
1636                 return;
1637
1638         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1639                 pkt = (sts_entry_t *)rsp->ring_ptr;
1640
1641                 rsp->ring_index++;
1642                 if (rsp->ring_index == rsp->length) {
1643                         rsp->ring_index = 0;
1644                         rsp->ring_ptr = rsp->ring;
1645                 } else {
1646                         rsp->ring_ptr++;
1647                 }
1648
1649                 if (pkt->entry_status != 0) {
1650                         qla2x00_error_entry(vha, rsp, pkt);
1651                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1652                         wmb();
1653                         continue;
1654                 }
1655
1656                 switch (pkt->entry_type) {
1657                 case STATUS_TYPE:
1658                         qla2x00_status_entry(vha, rsp, pkt);
1659                         break;
1660                 case STATUS_TYPE_21:
1661                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1662                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1663                                 qla2x00_process_completed_request(vha, rsp->req,
1664                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1665                         }
1666                         break;
1667                 case STATUS_TYPE_22:
1668                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1669                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1670                                 qla2x00_process_completed_request(vha, rsp->req,
1671                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1672                         }
1673                         break;
1674                 case STATUS_CONT_TYPE:
1675                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1676                         break;
1677                 case MBX_IOCB_TYPE:
1678                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1679                             (struct mbx_entry *)pkt);
1680                         break;
1681                 case CT_IOCB_TYPE:
1682                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1683                         break;
1684                 default:
1685                         /* Type Not Supported. */
1686                         ql_log(ql_log_warn, vha, 0x504a,
1687                             "Received unknown response pkt type %x "
1688                             "entry status=%x.\n",
1689                             pkt->entry_type, pkt->entry_status);
1690                         break;
1691                 }
1692                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1693                 wmb();
1694         }
1695
1696         /* Adjust ring index */
1697         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1698 }
1699
1700 static inline void
1701 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1702                      uint32_t sense_len, struct rsp_que *rsp, int res)
1703 {
1704         struct scsi_qla_host *vha = sp->fcport->vha;
1705         struct scsi_cmnd *cp = GET_CMD_SP(sp);
1706         uint32_t track_sense_len;
1707
1708         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1709                 sense_len = SCSI_SENSE_BUFFERSIZE;
1710
1711         SET_CMD_SENSE_LEN(sp, sense_len);
1712         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
1713         track_sense_len = sense_len;
1714
1715         if (sense_len > par_sense_len)
1716                 sense_len = par_sense_len;
1717
1718         memcpy(cp->sense_buffer, sense_data, sense_len);
1719
1720         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
1721         track_sense_len -= sense_len;
1722         SET_CMD_SENSE_LEN(sp, track_sense_len);
1723
1724         if (track_sense_len != 0) {
1725                 rsp->status_srb = sp;
1726                 cp->result = res;
1727         }
1728
1729         if (sense_len) {
1730                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
1731                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
1732                     sp->fcport->vha->host_no, cp->device->id, cp->device->lun,
1733                     cp);
1734                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
1735                     cp->sense_buffer, sense_len);
1736         }
1737 }
1738
1739 struct scsi_dif_tuple {
1740         __be16 guard;       /* Checksum */
1741         __be16 app_tag;         /* APPL identifier */
1742         __be32 ref_tag;         /* Target LBA or indirect LBA */
1743 };
1744
1745 /*
1746  * Checks the guard or meta-data for the type of error
1747  * detected by the HBA. In case of errors, we set the
1748  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1749  * to indicate to the kernel that the HBA detected error.
1750  */
1751 static inline int
1752 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1753 {
1754         struct scsi_qla_host *vha = sp->fcport->vha;
1755         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1756         uint8_t         *ap = &sts24->data[12];
1757         uint8_t         *ep = &sts24->data[20];
1758         uint32_t        e_ref_tag, a_ref_tag;
1759         uint16_t        e_app_tag, a_app_tag;
1760         uint16_t        e_guard, a_guard;
1761
1762         /*
1763          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
1764          * would make guard field appear at offset 2
1765          */
1766         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
1767         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
1768         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
1769         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
1770         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
1771         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
1772
1773         ql_dbg(ql_dbg_io, vha, 0x3023,
1774             "iocb(s) %p Returned STATUS.\n", sts24);
1775
1776         ql_dbg(ql_dbg_io, vha, 0x3024,
1777             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1778             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1779             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
1780             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1781             a_app_tag, e_app_tag, a_guard, e_guard);
1782
1783         /*
1784          * Ignore sector if:
1785          * For type     3: ref & app tag is all 'f's
1786          * For type 0,1,2: app tag is all 'f's
1787          */
1788         if ((a_app_tag == 0xffff) &&
1789             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
1790              (a_ref_tag == 0xffffffff))) {
1791                 uint32_t blocks_done, resid;
1792                 sector_t lba_s = scsi_get_lba(cmd);
1793
1794                 /* 2TB boundary case covered automatically with this */
1795                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
1796
1797                 resid = scsi_bufflen(cmd) - (blocks_done *
1798                     cmd->device->sector_size);
1799
1800                 scsi_set_resid(cmd, resid);
1801                 cmd->result = DID_OK << 16;
1802
1803                 /* Update protection tag */
1804                 if (scsi_prot_sg_count(cmd)) {
1805                         uint32_t i, j = 0, k = 0, num_ent;
1806                         struct scatterlist *sg;
1807                         struct sd_dif_tuple *spt;
1808
1809                         /* Patch the corresponding protection tags */
1810                         scsi_for_each_prot_sg(cmd, sg,
1811                             scsi_prot_sg_count(cmd), i) {
1812                                 num_ent = sg_dma_len(sg) / 8;
1813                                 if (k + num_ent < blocks_done) {
1814                                         k += num_ent;
1815                                         continue;
1816                                 }
1817                                 j = blocks_done - k - 1;
1818                                 k = blocks_done;
1819                                 break;
1820                         }
1821
1822                         if (k != blocks_done) {
1823                                 ql_log(ql_log_warn, vha, 0x302f,
1824                                     "unexpected tag values tag:lba=%x:%llx)\n",
1825                                     e_ref_tag, (unsigned long long)lba_s);
1826                                 return 1;
1827                         }
1828
1829                         spt = page_address(sg_page(sg)) + sg->offset;
1830                         spt += j;
1831
1832                         spt->app_tag = 0xffff;
1833                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
1834                                 spt->ref_tag = 0xffffffff;
1835                 }
1836
1837                 return 0;
1838         }
1839
1840         /* check guard */
1841         if (e_guard != a_guard) {
1842                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1843                     0x10, 0x1);
1844                 set_driver_byte(cmd, DRIVER_SENSE);
1845                 set_host_byte(cmd, DID_ABORT);
1846                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1847                 return 1;
1848         }
1849
1850         /* check ref tag */
1851         if (e_ref_tag != a_ref_tag) {
1852                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1853                     0x10, 0x3);
1854                 set_driver_byte(cmd, DRIVER_SENSE);
1855                 set_host_byte(cmd, DID_ABORT);
1856                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1857                 return 1;
1858         }
1859
1860         /* check appl tag */
1861         if (e_app_tag != a_app_tag) {
1862                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1863                     0x10, 0x2);
1864                 set_driver_byte(cmd, DRIVER_SENSE);
1865                 set_host_byte(cmd, DID_ABORT);
1866                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1867                 return 1;
1868         }
1869
1870         return 1;
1871 }
1872
1873 static void
1874 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
1875                                   struct req_que *req, uint32_t index)
1876 {
1877         struct qla_hw_data *ha = vha->hw;
1878         srb_t *sp;
1879         uint16_t        comp_status;
1880         uint16_t        scsi_status;
1881         uint16_t thread_id;
1882         uint32_t rval = EXT_STATUS_OK;
1883         struct fc_bsg_job *bsg_job = NULL;
1884         sts_entry_t *sts;
1885         struct sts_entry_24xx *sts24;
1886         sts = (sts_entry_t *) pkt;
1887         sts24 = (struct sts_entry_24xx *) pkt;
1888
1889         /* Validate handle. */
1890         if (index >= req->num_outstanding_cmds) {
1891                 ql_log(ql_log_warn, vha, 0x70af,
1892                     "Invalid SCSI completion handle 0x%x.\n", index);
1893                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1894                 return;
1895         }
1896
1897         sp = req->outstanding_cmds[index];
1898         if (sp) {
1899                 /* Free outstanding command slot. */
1900                 req->outstanding_cmds[index] = NULL;
1901                 bsg_job = sp->u.bsg_job;
1902         } else {
1903                 ql_log(ql_log_warn, vha, 0x70b0,
1904                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
1905                     req->id, index);
1906
1907                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1908                 return;
1909         }
1910
1911         if (IS_FWI2_CAPABLE(ha)) {
1912                 comp_status = le16_to_cpu(sts24->comp_status);
1913                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1914         } else {
1915                 comp_status = le16_to_cpu(sts->comp_status);
1916                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1917         }
1918
1919         thread_id = bsg_job->request->rqst_data.h_vendor.vendor_cmd[1];
1920         switch (comp_status) {
1921         case CS_COMPLETE:
1922                 if (scsi_status == 0) {
1923                         bsg_job->reply->reply_payload_rcv_len =
1924                                         bsg_job->reply_payload.payload_len;
1925                         vha->qla_stats.input_bytes +=
1926                                 bsg_job->reply->reply_payload_rcv_len;
1927                         vha->qla_stats.input_requests++;
1928                         rval = EXT_STATUS_OK;
1929                 }
1930                 goto done;
1931
1932         case CS_DATA_OVERRUN:
1933                 ql_dbg(ql_dbg_user, vha, 0x70b1,
1934                     "Command completed with date overrun thread_id=%d\n",
1935                     thread_id);
1936                 rval = EXT_STATUS_DATA_OVERRUN;
1937                 break;
1938
1939         case CS_DATA_UNDERRUN:
1940                 ql_dbg(ql_dbg_user, vha, 0x70b2,
1941                     "Command completed with date underrun thread_id=%d\n",
1942                     thread_id);
1943                 rval = EXT_STATUS_DATA_UNDERRUN;
1944                 break;
1945         case CS_BIDIR_RD_OVERRUN:
1946                 ql_dbg(ql_dbg_user, vha, 0x70b3,
1947                     "Command completed with read data overrun thread_id=%d\n",
1948                     thread_id);
1949                 rval = EXT_STATUS_DATA_OVERRUN;
1950                 break;
1951
1952         case CS_BIDIR_RD_WR_OVERRUN:
1953                 ql_dbg(ql_dbg_user, vha, 0x70b4,
1954                     "Command completed with read and write data overrun "
1955                     "thread_id=%d\n", thread_id);
1956                 rval = EXT_STATUS_DATA_OVERRUN;
1957                 break;
1958
1959         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
1960                 ql_dbg(ql_dbg_user, vha, 0x70b5,
1961                     "Command completed with read data over and write data "
1962                     "underrun thread_id=%d\n", thread_id);
1963                 rval = EXT_STATUS_DATA_OVERRUN;
1964                 break;
1965
1966         case CS_BIDIR_RD_UNDERRUN:
1967                 ql_dbg(ql_dbg_user, vha, 0x70b6,
1968                     "Command completed with read data data underrun "
1969                     "thread_id=%d\n", thread_id);
1970                 rval = EXT_STATUS_DATA_UNDERRUN;
1971                 break;
1972
1973         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
1974                 ql_dbg(ql_dbg_user, vha, 0x70b7,
1975                     "Command completed with read data under and write data "
1976                     "overrun thread_id=%d\n", thread_id);
1977                 rval = EXT_STATUS_DATA_UNDERRUN;
1978                 break;
1979
1980         case CS_BIDIR_RD_WR_UNDERRUN:
1981                 ql_dbg(ql_dbg_user, vha, 0x70b8,
1982                     "Command completed with read and write data underrun "
1983                     "thread_id=%d\n", thread_id);
1984                 rval = EXT_STATUS_DATA_UNDERRUN;
1985                 break;
1986
1987         case CS_BIDIR_DMA:
1988                 ql_dbg(ql_dbg_user, vha, 0x70b9,
1989                     "Command completed with data DMA error thread_id=%d\n",
1990                     thread_id);
1991                 rval = EXT_STATUS_DMA_ERR;
1992                 break;
1993
1994         case CS_TIMEOUT:
1995                 ql_dbg(ql_dbg_user, vha, 0x70ba,
1996                     "Command completed with timeout thread_id=%d\n",
1997                     thread_id);
1998                 rval = EXT_STATUS_TIMEOUT;
1999                 break;
2000         default:
2001                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2002                     "Command completed with completion status=0x%x "
2003                     "thread_id=%d\n", comp_status, thread_id);
2004                 rval = EXT_STATUS_ERR;
2005                 break;
2006         }
2007         bsg_job->reply->reply_payload_rcv_len = 0;
2008
2009 done:
2010         /* Return the vendor specific reply to API */
2011         bsg_job->reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2012         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2013         /* Always return DID_OK, bsg will send the vendor specific response
2014          * in this case only */
2015         sp->done(vha, sp, (DID_OK << 6));
2016
2017 }
2018
2019 /**
2020  * qla2x00_status_entry() - Process a Status IOCB entry.
2021  * @ha: SCSI driver HA context
2022  * @pkt: Entry pointer
2023  */
2024 static void
2025 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2026 {
2027         srb_t           *sp;
2028         fc_port_t       *fcport;
2029         struct scsi_cmnd *cp;
2030         sts_entry_t *sts;
2031         struct sts_entry_24xx *sts24;
2032         uint16_t        comp_status;
2033         uint16_t        scsi_status;
2034         uint16_t        ox_id;
2035         uint8_t         lscsi_status;
2036         int32_t         resid;
2037         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2038             fw_resid_len;
2039         uint8_t         *rsp_info, *sense_data;
2040         struct qla_hw_data *ha = vha->hw;
2041         uint32_t handle;
2042         uint16_t que;
2043         struct req_que *req;
2044         int logit = 1;
2045         int res = 0;
2046         uint16_t state_flags = 0;
2047         uint16_t retry_delay = 0;
2048
2049         sts = (sts_entry_t *) pkt;
2050         sts24 = (struct sts_entry_24xx *) pkt;
2051         if (IS_FWI2_CAPABLE(ha)) {
2052                 comp_status = le16_to_cpu(sts24->comp_status);
2053                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2054                 state_flags = le16_to_cpu(sts24->state_flags);
2055         } else {
2056                 comp_status = le16_to_cpu(sts->comp_status);
2057                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2058         }
2059         handle = (uint32_t) LSW(sts->handle);
2060         que = MSW(sts->handle);
2061         req = ha->req_q_map[que];
2062
2063         /* Check for invalid queue pointer */
2064         if (req == NULL ||
2065             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2066                 ql_dbg(ql_dbg_io, vha, 0x3059,
2067                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2068                     "que=%u.\n", sts->handle, req, que);
2069                 return;
2070         }
2071
2072         /* Validate handle. */
2073         if (handle < req->num_outstanding_cmds) {
2074                 sp = req->outstanding_cmds[handle];
2075                 if (!sp) {
2076                         ql_dbg(ql_dbg_io, vha, 0x3075,
2077                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2078                             __func__, vha->host_no, sts->handle);
2079                         return;
2080                 }
2081         } else {
2082                 ql_dbg(ql_dbg_io, vha, 0x3017,
2083                     "Invalid status handle, out of range (0x%x).\n",
2084                     sts->handle);
2085
2086                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2087                         if (IS_P3P_TYPE(ha))
2088                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2089                         else
2090                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2091                         qla2xxx_wake_dpc(vha);
2092                 }
2093                 return;
2094         }
2095
2096         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2097                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2098                 return;
2099         }
2100
2101         /* Task Management completion. */
2102         if (sp->type == SRB_TM_CMD) {
2103                 qla24xx_tm_iocb_entry(vha, req, pkt);
2104                 return;
2105         }
2106
2107         /* Fast path completion. */
2108         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2109                 qla2x00_process_completed_request(vha, req, handle);
2110
2111                 return;
2112         }
2113
2114         req->outstanding_cmds[handle] = NULL;
2115         cp = GET_CMD_SP(sp);
2116         if (cp == NULL) {
2117                 ql_dbg(ql_dbg_io, vha, 0x3018,
2118                     "Command already returned (0x%x/%p).\n",
2119                     sts->handle, sp);
2120
2121                 return;
2122         }
2123
2124         lscsi_status = scsi_status & STATUS_MASK;
2125
2126         fcport = sp->fcport;
2127
2128         ox_id = 0;
2129         sense_len = par_sense_len = rsp_info_len = resid_len =
2130             fw_resid_len = 0;
2131         if (IS_FWI2_CAPABLE(ha)) {
2132                 if (scsi_status & SS_SENSE_LEN_VALID)
2133                         sense_len = le32_to_cpu(sts24->sense_len);
2134                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2135                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2136                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2137                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2138                 if (comp_status == CS_DATA_UNDERRUN)
2139                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2140                 rsp_info = sts24->data;
2141                 sense_data = sts24->data;
2142                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2143                 ox_id = le16_to_cpu(sts24->ox_id);
2144                 par_sense_len = sizeof(sts24->data);
2145                 /* Valid values of the retry delay timer are 0x1-0xffef */
2146                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1)
2147                         retry_delay = sts24->retry_delay;
2148         } else {
2149                 if (scsi_status & SS_SENSE_LEN_VALID)
2150                         sense_len = le16_to_cpu(sts->req_sense_length);
2151                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2152                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2153                 resid_len = le32_to_cpu(sts->residual_length);
2154                 rsp_info = sts->rsp_info;
2155                 sense_data = sts->req_sense_data;
2156                 par_sense_len = sizeof(sts->req_sense_data);
2157         }
2158
2159         /* Check for any FCP transport errors. */
2160         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2161                 /* Sense data lies beyond any FCP RESPONSE data. */
2162                 if (IS_FWI2_CAPABLE(ha)) {
2163                         sense_data += rsp_info_len;
2164                         par_sense_len -= rsp_info_len;
2165                 }
2166                 if (rsp_info_len > 3 && rsp_info[3]) {
2167                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2168                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2169                             rsp_info_len, rsp_info[3]);
2170
2171                         res = DID_BUS_BUSY << 16;
2172                         goto out;
2173                 }
2174         }
2175
2176         /* Check for overrun. */
2177         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2178             scsi_status & SS_RESIDUAL_OVER)
2179                 comp_status = CS_DATA_OVERRUN;
2180
2181         /*
2182          * Check retry_delay_timer value if we receive a busy or
2183          * queue full.
2184          */
2185         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2186             lscsi_status == SAM_STAT_BUSY)
2187                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2188
2189         /*
2190          * Based on Host and scsi status generate status code for Linux
2191          */
2192         switch (comp_status) {
2193         case CS_COMPLETE:
2194         case CS_QUEUE_FULL:
2195                 if (scsi_status == 0) {
2196                         res = DID_OK << 16;
2197                         break;
2198                 }
2199                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2200                         resid = resid_len;
2201                         scsi_set_resid(cp, resid);
2202
2203                         if (!lscsi_status &&
2204                             ((unsigned)(scsi_bufflen(cp) - resid) <
2205                              cp->underflow)) {
2206                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2207                                     "Mid-layer underflow "
2208                                     "detected (0x%x of 0x%x bytes).\n",
2209                                     resid, scsi_bufflen(cp));
2210
2211                                 res = DID_ERROR << 16;
2212                                 break;
2213                         }
2214                 }
2215                 res = DID_OK << 16 | lscsi_status;
2216
2217                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2218                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2219                             "QUEUE FULL detected.\n");
2220                         break;
2221                 }
2222                 logit = 0;
2223                 if (lscsi_status != SS_CHECK_CONDITION)
2224                         break;
2225
2226                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2227                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2228                         break;
2229
2230                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2231                     rsp, res);
2232                 break;
2233
2234         case CS_DATA_UNDERRUN:
2235                 /* Use F/W calculated residual length. */
2236                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2237                 scsi_set_resid(cp, resid);
2238                 if (scsi_status & SS_RESIDUAL_UNDER) {
2239                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2240                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2241                                     "Dropped frame(s) detected "
2242                                     "(0x%x of 0x%x bytes).\n",
2243                                     resid, scsi_bufflen(cp));
2244
2245                                 res = DID_ERROR << 16 | lscsi_status;
2246                                 goto check_scsi_status;
2247                         }
2248
2249                         if (!lscsi_status &&
2250                             ((unsigned)(scsi_bufflen(cp) - resid) <
2251                             cp->underflow)) {
2252                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2253                                     "Mid-layer underflow "
2254                                     "detected (0x%x of 0x%x bytes).\n",
2255                                     resid, scsi_bufflen(cp));
2256
2257                                 res = DID_ERROR << 16;
2258                                 break;
2259                         }
2260                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2261                             lscsi_status != SAM_STAT_BUSY) {
2262                         /*
2263                          * scsi status of task set and busy are considered to be
2264                          * task not completed.
2265                          */
2266
2267                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2268                             "Dropped frame(s) detected (0x%x "
2269                             "of 0x%x bytes).\n", resid,
2270                             scsi_bufflen(cp));
2271
2272                         res = DID_ERROR << 16 | lscsi_status;
2273                         goto check_scsi_status;
2274                 } else {
2275                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2276                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2277                             scsi_status, lscsi_status);
2278                 }
2279
2280                 res = DID_OK << 16 | lscsi_status;
2281                 logit = 0;
2282
2283 check_scsi_status:
2284                 /*
2285                  * Check to see if SCSI Status is non zero. If so report SCSI
2286                  * Status.
2287                  */
2288                 if (lscsi_status != 0) {
2289                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2290                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2291                                     "QUEUE FULL detected.\n");
2292                                 logit = 1;
2293                                 break;
2294                         }
2295                         if (lscsi_status != SS_CHECK_CONDITION)
2296                                 break;
2297
2298                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2299                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2300                                 break;
2301
2302                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2303                             sense_len, rsp, res);
2304                 }
2305                 break;
2306
2307         case CS_PORT_LOGGED_OUT:
2308         case CS_PORT_CONFIG_CHG:
2309         case CS_PORT_BUSY:
2310         case CS_INCOMPLETE:
2311         case CS_PORT_UNAVAILABLE:
2312         case CS_TIMEOUT:
2313         case CS_RESET:
2314
2315                 /*
2316                  * We are going to have the fc class block the rport
2317                  * while we try to recover so instruct the mid layer
2318                  * to requeue until the class decides how to handle this.
2319                  */
2320                 res = DID_TRANSPORT_DISRUPTED << 16;
2321
2322                 if (comp_status == CS_TIMEOUT) {
2323                         if (IS_FWI2_CAPABLE(ha))
2324                                 break;
2325                         else if ((le16_to_cpu(sts->status_flags) &
2326                             SF_LOGOUT_SENT) == 0)
2327                                 break;
2328                 }
2329
2330                 ql_dbg(ql_dbg_io, fcport->vha, 0x3021,
2331                     "Port to be marked lost on fcport=%02x%02x%02x, current "
2332                     "port state= %s.\n", fcport->d_id.b.domain,
2333                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
2334                     port_state_str[atomic_read(&fcport->state)]);
2335
2336                 if (atomic_read(&fcport->state) == FCS_ONLINE)
2337                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2338                 break;
2339
2340         case CS_ABORTED:
2341                 res = DID_RESET << 16;
2342                 break;
2343
2344         case CS_DIF_ERROR:
2345                 logit = qla2x00_handle_dif_error(sp, sts24);
2346                 res = cp->result;
2347                 break;
2348
2349         case CS_TRANSPORT:
2350                 res = DID_ERROR << 16;
2351
2352                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2353                         break;
2354
2355                 if (state_flags & BIT_4)
2356                         scmd_printk(KERN_WARNING, cp,
2357                             "Unsupported device '%s' found.\n",
2358                             cp->device->vendor);
2359                 break;
2360
2361         default:
2362                 res = DID_ERROR << 16;
2363                 break;
2364         }
2365
2366 out:
2367         if (logit)
2368                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2369                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2370                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2371                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2372                     comp_status, scsi_status, res, vha->host_no,
2373                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2374                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2375                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2376                     resid_len, fw_resid_len, sp, cp);
2377
2378         if (rsp->status_srb == NULL)
2379                 sp->done(ha, sp, res);
2380 }
2381
2382 /**
2383  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2384  * @ha: SCSI driver HA context
2385  * @pkt: Entry pointer
2386  *
2387  * Extended sense data.
2388  */
2389 static void
2390 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2391 {
2392         uint8_t sense_sz = 0;
2393         struct qla_hw_data *ha = rsp->hw;
2394         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2395         srb_t *sp = rsp->status_srb;
2396         struct scsi_cmnd *cp;
2397         uint32_t sense_len;
2398         uint8_t *sense_ptr;
2399
2400         if (!sp || !GET_CMD_SENSE_LEN(sp))
2401                 return;
2402
2403         sense_len = GET_CMD_SENSE_LEN(sp);
2404         sense_ptr = GET_CMD_SENSE_PTR(sp);
2405
2406         cp = GET_CMD_SP(sp);
2407         if (cp == NULL) {
2408                 ql_log(ql_log_warn, vha, 0x3025,
2409                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2410
2411                 rsp->status_srb = NULL;
2412                 return;
2413         }
2414
2415         if (sense_len > sizeof(pkt->data))
2416                 sense_sz = sizeof(pkt->data);
2417         else
2418                 sense_sz = sense_len;
2419
2420         /* Move sense data. */
2421         if (IS_FWI2_CAPABLE(ha))
2422                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2423         memcpy(sense_ptr, pkt->data, sense_sz);
2424         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2425                 sense_ptr, sense_sz);
2426
2427         sense_len -= sense_sz;
2428         sense_ptr += sense_sz;
2429
2430         SET_CMD_SENSE_PTR(sp, sense_ptr);
2431         SET_CMD_SENSE_LEN(sp, sense_len);
2432
2433         /* Place command on done queue. */
2434         if (sense_len == 0) {
2435                 rsp->status_srb = NULL;
2436                 sp->done(ha, sp, cp->result);
2437         }
2438 }
2439
2440 /**
2441  * qla2x00_error_entry() - Process an error entry.
2442  * @ha: SCSI driver HA context
2443  * @pkt: Entry pointer
2444  */
2445 static void
2446 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2447 {
2448         srb_t *sp;
2449         struct qla_hw_data *ha = vha->hw;
2450         const char func[] = "ERROR-IOCB";
2451         uint16_t que = MSW(pkt->handle);
2452         struct req_que *req = NULL;
2453         int res = DID_ERROR << 16;
2454
2455         ql_dbg(ql_dbg_async, vha, 0x502a,
2456             "type of error status in response: 0x%x\n", pkt->entry_status);
2457
2458         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2459                 goto fatal;
2460
2461         req = ha->req_q_map[que];
2462
2463         if (pkt->entry_status & RF_BUSY)
2464                 res = DID_BUS_BUSY << 16;
2465
2466         if (pkt->entry_type == NOTIFY_ACK_TYPE &&
2467             pkt->handle == QLA_TGT_SKIP_HANDLE)
2468                 return;
2469
2470         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2471         if (sp) {
2472                 sp->done(ha, sp, res);
2473                 return;
2474         }
2475 fatal:
2476         ql_log(ql_log_warn, vha, 0x5030,
2477             "Error entry - invalid handle/queue (%04x).\n", que);
2478 }
2479
2480 /**
2481  * qla24xx_mbx_completion() - Process mailbox command completions.
2482  * @ha: SCSI driver HA context
2483  * @mb0: Mailbox0 register
2484  */
2485 static void
2486 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2487 {
2488         uint16_t        cnt;
2489         uint32_t        mboxes;
2490         uint16_t __iomem *wptr;
2491         struct qla_hw_data *ha = vha->hw;
2492         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2493
2494         /* Read all mbox registers? */
2495         WARN_ON_ONCE(ha->mbx_count > 32);
2496         mboxes = (1ULL << ha->mbx_count) - 1;
2497         if (!ha->mcp)
2498                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2499         else
2500                 mboxes = ha->mcp->in_mb;
2501
2502         /* Load return mailbox registers. */
2503         ha->flags.mbox_int = 1;
2504         ha->mailbox_out[0] = mb0;
2505         mboxes >>= 1;
2506         wptr = (uint16_t __iomem *)&reg->mailbox1;
2507
2508         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2509                 if (mboxes & BIT_0)
2510                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2511
2512                 mboxes >>= 1;
2513                 wptr++;
2514         }
2515 }
2516
2517 static void
2518 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2519         struct abort_entry_24xx *pkt)
2520 {
2521         const char func[] = "ABT_IOCB";
2522         srb_t *sp;
2523         struct srb_iocb *abt;
2524
2525         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2526         if (!sp)
2527                 return;
2528
2529         abt = &sp->u.iocb_cmd;
2530         abt->u.abt.comp_status = le32_to_cpu(pkt->nport_handle);
2531         sp->done(vha, sp, 0);
2532 }
2533
2534 /**
2535  * qla24xx_process_response_queue() - Process response queue entries.
2536  * @ha: SCSI driver HA context
2537  */
2538 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2539         struct rsp_que *rsp)
2540 {
2541         struct sts_entry_24xx *pkt;
2542         struct qla_hw_data *ha = vha->hw;
2543
2544         if (!vha->flags.online)
2545                 return;
2546
2547         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2548                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
2549
2550                 rsp->ring_index++;
2551                 if (rsp->ring_index == rsp->length) {
2552                         rsp->ring_index = 0;
2553                         rsp->ring_ptr = rsp->ring;
2554                 } else {
2555                         rsp->ring_ptr++;
2556                 }
2557
2558                 if (pkt->entry_status != 0) {
2559                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
2560
2561                         if (qlt_24xx_process_response_error(vha, pkt))
2562                                 goto process_err;
2563
2564                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2565                         wmb();
2566                         continue;
2567                 }
2568 process_err:
2569
2570                 switch (pkt->entry_type) {
2571                 case STATUS_TYPE:
2572                         qla2x00_status_entry(vha, rsp, pkt);
2573                         break;
2574                 case STATUS_CONT_TYPE:
2575                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2576                         break;
2577                 case VP_RPT_ID_IOCB_TYPE:
2578                         qla24xx_report_id_acquisition(vha,
2579                             (struct vp_rpt_id_entry_24xx *)pkt);
2580                         break;
2581                 case LOGINOUT_PORT_IOCB_TYPE:
2582                         qla24xx_logio_entry(vha, rsp->req,
2583                             (struct logio_entry_24xx *)pkt);
2584                         break;
2585                 case CT_IOCB_TYPE:
2586                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2587                         break;
2588                 case ELS_IOCB_TYPE:
2589                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2590                         break;
2591                 case ABTS_RECV_24XX:
2592                         /* ensure that the ATIO queue is empty */
2593                         qlt_24xx_process_atio_queue(vha);
2594                 case ABTS_RESP_24XX:
2595                 case CTIO_TYPE7:
2596                 case NOTIFY_ACK_TYPE:
2597                 case CTIO_CRC2:
2598                         qlt_response_pkt_all_vps(vha, (response_t *)pkt);
2599                         break;
2600                 case MARKER_TYPE:
2601                         /* Do nothing in this case, this check is to prevent it
2602                          * from falling into default case
2603                          */
2604                         break;
2605                 case ABORT_IOCB_TYPE:
2606                         qla24xx_abort_iocb_entry(vha, rsp->req,
2607                             (struct abort_entry_24xx *)pkt);
2608                         break;
2609                 default:
2610                         /* Type Not Supported. */
2611                         ql_dbg(ql_dbg_async, vha, 0x5042,
2612                             "Received unknown response pkt type %x "
2613                             "entry status=%x.\n",
2614                             pkt->entry_type, pkt->entry_status);
2615                         break;
2616                 }
2617                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2618                 wmb();
2619         }
2620
2621         /* Adjust ring index */
2622         if (IS_P3P_TYPE(ha)) {
2623                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2624                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2625         } else
2626                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2627 }
2628
2629 static void
2630 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2631 {
2632         int rval;
2633         uint32_t cnt;
2634         struct qla_hw_data *ha = vha->hw;
2635         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2636
2637         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
2638             !IS_QLA27XX(ha))
2639                 return;
2640
2641         rval = QLA_SUCCESS;
2642         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2643         RD_REG_DWORD(&reg->iobase_addr);
2644         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2645         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2646             rval == QLA_SUCCESS; cnt--) {
2647                 if (cnt) {
2648                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2649                         udelay(10);
2650                 } else
2651                         rval = QLA_FUNCTION_TIMEOUT;
2652         }
2653         if (rval == QLA_SUCCESS)
2654                 goto next_test;
2655
2656         rval = QLA_SUCCESS;
2657         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2658         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2659             rval == QLA_SUCCESS; cnt--) {
2660                 if (cnt) {
2661                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2662                         udelay(10);
2663                 } else
2664                         rval = QLA_FUNCTION_TIMEOUT;
2665         }
2666         if (rval != QLA_SUCCESS)
2667                 goto done;
2668
2669 next_test:
2670         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2671                 ql_log(ql_log_info, vha, 0x504c,
2672                     "Additional code -- 0x55AA.\n");
2673
2674 done:
2675         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2676         RD_REG_DWORD(&reg->iobase_window);
2677 }
2678
2679 /**
2680  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
2681  * @irq:
2682  * @dev_id: SCSI driver HA context
2683  *
2684  * Called by system whenever the host adapter generates an interrupt.
2685  *
2686  * Returns handled flag.
2687  */
2688 irqreturn_t
2689 qla24xx_intr_handler(int irq, void *dev_id)
2690 {
2691         scsi_qla_host_t *vha;
2692         struct qla_hw_data *ha;
2693         struct device_reg_24xx __iomem *reg;
2694         int             status;
2695         unsigned long   iter;
2696         uint32_t        stat;
2697         uint32_t        hccr;
2698         uint16_t        mb[8];
2699         struct rsp_que *rsp;
2700         unsigned long   flags;
2701
2702         rsp = (struct rsp_que *) dev_id;
2703         if (!rsp) {
2704                 ql_log(ql_log_info, NULL, 0x5059,
2705                     "%s: NULL response queue pointer.\n", __func__);
2706                 return IRQ_NONE;
2707         }
2708
2709         ha = rsp->hw;
2710         reg = &ha->iobase->isp24;
2711         status = 0;
2712
2713         if (unlikely(pci_channel_offline(ha->pdev)))
2714                 return IRQ_HANDLED;
2715
2716         spin_lock_irqsave(&ha->hardware_lock, flags);
2717         vha = pci_get_drvdata(ha->pdev);
2718         for (iter = 50; iter--; ) {
2719                 stat = RD_REG_DWORD(&reg->host_status);
2720                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
2721                         break;
2722                 if (stat & HSRX_RISC_PAUSED) {
2723                         if (unlikely(pci_channel_offline(ha->pdev)))
2724                                 break;
2725
2726                         hccr = RD_REG_DWORD(&reg->hccr);
2727
2728                         ql_log(ql_log_warn, vha, 0x504b,
2729                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2730                             hccr);
2731
2732                         qla2xxx_check_risc_status(vha);
2733
2734                         ha->isp_ops->fw_dump(vha, 1);
2735                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2736                         break;
2737                 } else if ((stat & HSRX_RISC_INT) == 0)
2738                         break;
2739
2740                 switch (stat & 0xff) {
2741                 case INTR_ROM_MB_SUCCESS:
2742                 case INTR_ROM_MB_FAILED:
2743                 case INTR_MB_SUCCESS:
2744                 case INTR_MB_FAILED:
2745                         qla24xx_mbx_completion(vha, MSW(stat));
2746                         status |= MBX_INTERRUPT;
2747
2748                         break;
2749                 case INTR_ASYNC_EVENT:
2750                         mb[0] = MSW(stat);
2751                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2752                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2753                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2754                         qla2x00_async_event(vha, rsp, mb);
2755                         break;
2756                 case INTR_RSP_QUE_UPDATE:
2757                 case INTR_RSP_QUE_UPDATE_83XX:
2758                         qla24xx_process_response_queue(vha, rsp);
2759                         break;
2760                 case INTR_ATIO_QUE_UPDATE:
2761                         qlt_24xx_process_atio_queue(vha);
2762                         break;
2763                 case INTR_ATIO_RSP_QUE_UPDATE:
2764                         qlt_24xx_process_atio_queue(vha);
2765                         qla24xx_process_response_queue(vha, rsp);
2766                         break;
2767                 default:
2768                         ql_dbg(ql_dbg_async, vha, 0x504f,
2769                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
2770                         break;
2771                 }
2772                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2773                 RD_REG_DWORD_RELAXED(&reg->hccr);
2774                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
2775                         ndelay(3500);
2776         }
2777         qla2x00_handle_mbx_completion(ha, status);
2778         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2779
2780         return IRQ_HANDLED;
2781 }
2782
2783 static irqreturn_t
2784 qla24xx_msix_rsp_q(int irq, void *dev_id)
2785 {
2786         struct qla_hw_data *ha;
2787         struct rsp_que *rsp;
2788         struct device_reg_24xx __iomem *reg;
2789         struct scsi_qla_host *vha;
2790         unsigned long flags;
2791         uint32_t stat = 0;
2792
2793         rsp = (struct rsp_que *) dev_id;
2794         if (!rsp) {
2795                 ql_log(ql_log_info, NULL, 0x505a,
2796                     "%s: NULL response queue pointer.\n", __func__);
2797                 return IRQ_NONE;
2798         }
2799         ha = rsp->hw;
2800         reg = &ha->iobase->isp24;
2801
2802         spin_lock_irqsave(&ha->hardware_lock, flags);
2803
2804         vha = pci_get_drvdata(ha->pdev);
2805         /*
2806          * Use host_status register to check to PCI disconnection before we
2807          * we process the response queue.
2808          */
2809         stat = RD_REG_DWORD(&reg->host_status);
2810         if (qla2x00_check_reg32_for_disconnect(vha, stat))
2811                 goto out;
2812         qla24xx_process_response_queue(vha, rsp);
2813         if (!ha->flags.disable_msix_handshake) {
2814                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2815                 RD_REG_DWORD_RELAXED(&reg->hccr);
2816         }
2817 out:
2818         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2819
2820         return IRQ_HANDLED;
2821 }
2822
2823 static irqreturn_t
2824 qla25xx_msix_rsp_q(int irq, void *dev_id)
2825 {
2826         struct qla_hw_data *ha;
2827         scsi_qla_host_t *vha;
2828         struct rsp_que *rsp;
2829         struct device_reg_24xx __iomem *reg;
2830         unsigned long flags;
2831         uint32_t hccr = 0;
2832
2833         rsp = (struct rsp_que *) dev_id;
2834         if (!rsp) {
2835                 ql_log(ql_log_info, NULL, 0x505b,
2836                     "%s: NULL response queue pointer.\n", __func__);
2837                 return IRQ_NONE;
2838         }
2839         ha = rsp->hw;
2840         vha = pci_get_drvdata(ha->pdev);
2841
2842         /* Clear the interrupt, if enabled, for this response queue */
2843         if (!ha->flags.disable_msix_handshake) {
2844                 reg = &ha->iobase->isp24;
2845                 spin_lock_irqsave(&ha->hardware_lock, flags);
2846                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2847                 hccr = RD_REG_DWORD_RELAXED(&reg->hccr);
2848                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2849         }
2850         if (qla2x00_check_reg32_for_disconnect(vha, hccr))
2851                 goto out;
2852         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2853
2854 out:
2855         return IRQ_HANDLED;
2856 }
2857
2858 static irqreturn_t
2859 qla24xx_msix_default(int irq, void *dev_id)
2860 {
2861         scsi_qla_host_t *vha;
2862         struct qla_hw_data *ha;
2863         struct rsp_que *rsp;
2864         struct device_reg_24xx __iomem *reg;
2865         int             status;
2866         uint32_t        stat;
2867         uint32_t        hccr;
2868         uint16_t        mb[8];
2869         unsigned long flags;
2870
2871         rsp = (struct rsp_que *) dev_id;
2872         if (!rsp) {
2873                 ql_log(ql_log_info, NULL, 0x505c,
2874                     "%s: NULL response queue pointer.\n", __func__);
2875                 return IRQ_NONE;
2876         }
2877         ha = rsp->hw;
2878         reg = &ha->iobase->isp24;
2879         status = 0;
2880
2881         spin_lock_irqsave(&ha->hardware_lock, flags);
2882         vha = pci_get_drvdata(ha->pdev);
2883         do {
2884                 stat = RD_REG_DWORD(&reg->host_status);
2885                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
2886                         break;
2887                 if (stat & HSRX_RISC_PAUSED) {
2888                         if (unlikely(pci_channel_offline(ha->pdev)))
2889                                 break;
2890
2891                         hccr = RD_REG_DWORD(&reg->hccr);
2892
2893                         ql_log(ql_log_info, vha, 0x5050,
2894                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2895                             hccr);
2896
2897                         qla2xxx_check_risc_status(vha);
2898
2899                         ha->isp_ops->fw_dump(vha, 1);
2900                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2901                         break;
2902                 } else if ((stat & HSRX_RISC_INT) == 0)
2903                         break;
2904
2905                 switch (stat & 0xff) {
2906                 case INTR_ROM_MB_SUCCESS:
2907                 case INTR_ROM_MB_FAILED:
2908                 case INTR_MB_SUCCESS:
2909                 case INTR_MB_FAILED:
2910                         qla24xx_mbx_completion(vha, MSW(stat));
2911                         status |= MBX_INTERRUPT;
2912
2913                         break;
2914                 case INTR_ASYNC_EVENT:
2915                         mb[0] = MSW(stat);
2916                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2917                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2918                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2919                         qla2x00_async_event(vha, rsp, mb);
2920                         break;
2921                 case INTR_RSP_QUE_UPDATE:
2922                 case INTR_RSP_QUE_UPDATE_83XX:
2923                         qla24xx_process_response_queue(vha, rsp);
2924                         break;
2925                 case INTR_ATIO_QUE_UPDATE:
2926                         qlt_24xx_process_atio_queue(vha);
2927                         break;
2928                 case INTR_ATIO_RSP_QUE_UPDATE:
2929                         qlt_24xx_process_atio_queue(vha);
2930                         qla24xx_process_response_queue(vha, rsp);
2931                         break;
2932                 default:
2933                         ql_dbg(ql_dbg_async, vha, 0x5051,
2934                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
2935                         break;
2936                 }
2937                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2938         } while (0);
2939         qla2x00_handle_mbx_completion(ha, status);
2940         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2941
2942         return IRQ_HANDLED;
2943 }
2944
2945 /* Interrupt handling helpers. */
2946
2947 struct qla_init_msix_entry {
2948         const char *name;
2949         irq_handler_t handler;
2950 };
2951
2952 static struct qla_init_msix_entry msix_entries[3] = {
2953         { "qla2xxx (default)", qla24xx_msix_default },
2954         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2955         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2956 };
2957
2958 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2959         { "qla2xxx (default)", qla82xx_msix_default },
2960         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2961 };
2962
2963 static struct qla_init_msix_entry qla83xx_msix_entries[3] = {
2964         { "qla2xxx (default)", qla24xx_msix_default },
2965         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2966         { "qla2xxx (atio_q)", qla83xx_msix_atio_q },
2967 };
2968
2969 static void
2970 qla24xx_disable_msix(struct qla_hw_data *ha)
2971 {
2972         int i;
2973         struct qla_msix_entry *qentry;
2974         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2975
2976         for (i = 0; i < ha->msix_count; i++) {
2977                 qentry = &ha->msix_entries[i];
2978                 if (qentry->have_irq)
2979                         free_irq(qentry->vector, qentry->rsp);
2980         }
2981         pci_disable_msix(ha->pdev);
2982         kfree(ha->msix_entries);
2983         ha->msix_entries = NULL;
2984         ha->flags.msix_enabled = 0;
2985         ql_dbg(ql_dbg_init, vha, 0x0042,
2986             "Disabled the MSI.\n");
2987 }
2988
2989 static int
2990 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2991 {
2992 #define MIN_MSIX_COUNT  2
2993 #define ATIO_VECTOR     2
2994         int i, ret;
2995         struct msix_entry *entries;
2996         struct qla_msix_entry *qentry;
2997         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2998
2999         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
3000                         GFP_KERNEL);
3001         if (!entries) {
3002                 ql_log(ql_log_warn, vha, 0x00bc,
3003                     "Failed to allocate memory for msix_entry.\n");
3004                 return -ENOMEM;
3005         }
3006
3007         for (i = 0; i < ha->msix_count; i++)
3008                 entries[i].entry = i;
3009
3010         ret = pci_enable_msix_range(ha->pdev,
3011                                     entries, MIN_MSIX_COUNT, ha->msix_count);
3012         if (ret < 0) {
3013                 ql_log(ql_log_fatal, vha, 0x00c7,
3014                     "MSI-X: Failed to enable support, "
3015                     "giving   up -- %d/%d.\n",
3016                     ha->msix_count, ret);
3017                 goto msix_out;
3018         } else if (ret < ha->msix_count) {
3019                 ql_log(ql_log_warn, vha, 0x00c6,
3020                     "MSI-X: Failed to enable support "
3021                     "-- %d/%d\n Retry with %d vectors.\n",
3022                     ha->msix_count, ret, ret);
3023                 ha->msix_count = ret;
3024                 ha->max_rsp_queues = ha->msix_count - 1;
3025         }
3026         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
3027                                 ha->msix_count, GFP_KERNEL);
3028         if (!ha->msix_entries) {
3029                 ql_log(ql_log_fatal, vha, 0x00c8,
3030                     "Failed to allocate memory for ha->msix_entries.\n");
3031                 ret = -ENOMEM;
3032                 goto msix_out;
3033         }
3034         ha->flags.msix_enabled = 1;
3035
3036         for (i = 0; i < ha->msix_count; i++) {
3037                 qentry = &ha->msix_entries[i];
3038                 qentry->vector = entries[i].vector;
3039                 qentry->entry = entries[i].entry;
3040                 qentry->have_irq = 0;
3041                 qentry->rsp = NULL;
3042         }
3043
3044         /* Enable MSI-X vectors for the base queue */
3045         for (i = 0; i < 2; i++) {
3046                 qentry = &ha->msix_entries[i];
3047                 if (IS_P3P_TYPE(ha))
3048                         ret = request_irq(qentry->vector,
3049                                 qla82xx_msix_entries[i].handler,
3050                                 0, qla82xx_msix_entries[i].name, rsp);
3051                 else
3052                         ret = request_irq(qentry->vector,
3053                                 msix_entries[i].handler,
3054                                 0, msix_entries[i].name, rsp);
3055                 if (ret)
3056                         goto msix_register_fail;
3057                 qentry->have_irq = 1;
3058                 qentry->rsp = rsp;
3059                 rsp->msix = qentry;
3060         }
3061
3062         /*
3063          * If target mode is enable, also request the vector for the ATIO
3064          * queue.
3065          */
3066         if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) {
3067                 qentry = &ha->msix_entries[ATIO_VECTOR];
3068                 ret = request_irq(qentry->vector,
3069                         qla83xx_msix_entries[ATIO_VECTOR].handler,
3070                         0, qla83xx_msix_entries[ATIO_VECTOR].name, rsp);
3071                 qentry->have_irq = 1;
3072                 qentry->rsp = rsp;
3073                 rsp->msix = qentry;
3074         }
3075
3076 msix_register_fail:
3077         if (ret) {
3078                 ql_log(ql_log_fatal, vha, 0x00cb,
3079                     "MSI-X: unable to register handler -- %x/%d.\n",
3080                     qentry->vector, ret);
3081                 qla24xx_disable_msix(ha);
3082                 ha->mqenable = 0;
3083                 goto msix_out;
3084         }
3085
3086         /* Enable MSI-X vector for response queue update for queue 0 */
3087         if (IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
3088                 if (ha->msixbase && ha->mqiobase &&
3089                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
3090                         ha->mqenable = 1;
3091         } else
3092                 if (ha->mqiobase
3093                     && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
3094                         ha->mqenable = 1;
3095         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3096             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3097             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3098         ql_dbg(ql_dbg_init, vha, 0x0055,
3099             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3100             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3101
3102 msix_out:
3103         kfree(entries);
3104         return ret;
3105 }
3106
3107 int
3108 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3109 {
3110         int ret = QLA_FUNCTION_FAILED;
3111         device_reg_t *reg = ha->iobase;
3112         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3113
3114         /* If possible, enable MSI-X. */
3115         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3116             !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) && !IS_QLAFX00(ha) &&
3117             !IS_QLA27XX(ha))
3118                 goto skip_msi;
3119
3120         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3121                 (ha->pdev->subsystem_device == 0x7040 ||
3122                 ha->pdev->subsystem_device == 0x7041 ||
3123                 ha->pdev->subsystem_device == 0x1705)) {
3124                 ql_log(ql_log_warn, vha, 0x0034,
3125                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3126                         ha->pdev->subsystem_vendor,
3127                         ha->pdev->subsystem_device);
3128                 goto skip_msi;
3129         }
3130
3131         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3132                 ql_log(ql_log_warn, vha, 0x0035,
3133                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3134                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3135                 goto skip_msix;
3136         }
3137
3138         ret = qla24xx_enable_msix(ha, rsp);
3139         if (!ret) {
3140                 ql_dbg(ql_dbg_init, vha, 0x0036,
3141                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3142                     ha->chip_revision, ha->fw_attributes);
3143                 goto clear_risc_ints;
3144         }
3145
3146 skip_msix:
3147
3148         ql_log(ql_log_info, vha, 0x0037,
3149             "Falling back-to MSI mode -%d.\n", ret);
3150
3151         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3152             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3153             !IS_QLA27XX(ha))
3154                 goto skip_msi;
3155
3156         ret = pci_enable_msi(ha->pdev);
3157         if (!ret) {
3158                 ql_dbg(ql_dbg_init, vha, 0x0038,
3159                     "MSI: Enabled.\n");
3160                 ha->flags.msi_enabled = 1;
3161         } else
3162                 ql_log(ql_log_warn, vha, 0x0039,
3163                     "Falling back-to INTa mode -- %d.\n", ret);
3164 skip_msi:
3165
3166         /* Skip INTx on ISP82xx. */
3167         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3168                 return QLA_FUNCTION_FAILED;
3169
3170         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3171             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3172             QLA2XXX_DRIVER_NAME, rsp);
3173         if (ret) {
3174                 ql_log(ql_log_warn, vha, 0x003a,
3175                     "Failed to reserve interrupt %d already in use.\n",
3176                     ha->pdev->irq);
3177                 goto fail;
3178         } else if (!ha->flags.msi_enabled) {
3179                 ql_dbg(ql_dbg_init, vha, 0x0125,
3180                     "INTa mode: Enabled.\n");
3181                 ha->flags.mr_intr_valid = 1;
3182         }
3183
3184 clear_risc_ints:
3185         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3186                 goto fail;
3187
3188         spin_lock_irq(&ha->hardware_lock);
3189         WRT_REG_WORD(&reg->isp.semaphore, 0);
3190         spin_unlock_irq(&ha->hardware_lock);
3191
3192 fail:
3193         return ret;
3194 }
3195
3196 void
3197 qla2x00_free_irqs(scsi_qla_host_t *vha)
3198 {
3199         struct qla_hw_data *ha = vha->hw;
3200         struct rsp_que *rsp;
3201
3202         /*
3203          * We need to check that ha->rsp_q_map is valid in case we are called
3204          * from a probe failure context.
3205          */
3206         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3207                 return;
3208         rsp = ha->rsp_q_map[0];
3209
3210         if (ha->flags.msix_enabled)
3211                 qla24xx_disable_msix(ha);
3212         else if (ha->flags.msi_enabled) {
3213                 free_irq(ha->pdev->irq, rsp);
3214                 pci_disable_msi(ha->pdev);
3215         } else
3216                 free_irq(ha->pdev->irq, rsp);
3217 }
3218
3219
3220 int qla25xx_request_irq(struct rsp_que *rsp)
3221 {
3222         struct qla_hw_data *ha = rsp->hw;
3223         struct qla_init_msix_entry *intr = &msix_entries[2];
3224         struct qla_msix_entry *msix = rsp->msix;
3225         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3226         int ret;
3227
3228         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
3229         if (ret) {
3230                 ql_log(ql_log_fatal, vha, 0x00e6,
3231                     "MSI-X: Unable to register handler -- %x/%d.\n",
3232                     msix->vector, ret);
3233                 return ret;
3234         }
3235         msix->have_irq = 1;
3236         msix->rsp = rsp;
3237         return ret;
3238 }