drivers/scsi/qla2xxx/qla_isr.c

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