drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2013 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_target.h"
   9
  10 #include <linux/delay.h>
  11 #include <linux/slab.h>
  12 #include <scsi/scsi_tcq.h>
  13 #include <scsi/scsi_bsg_fc.h>
  14 #include <scsi/scsi_eh.h>
  15
  16 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  17 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  18 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  19 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  20         sts_entry_t *);
  21
  22 /**
  23  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  24  * @irq:
  25  * @dev_id: SCSI driver HA context
  26  *
  27  * Called by system whenever the host adapter generates an interrupt.
  28  *
  29  * Returns handled flag.
  30  */
  31 irqreturn_t
  32 qla2100_intr_handler(int irq, void *dev_id)
  33 {
  34         scsi_qla_host_t *vha;
  35         struct qla_hw_data *ha;
  36         struct device_reg_2xxx __iomem *reg;
  37         int             status;
  38         unsigned long   iter;
  39         uint16_t        hccr;
  40         uint16_t        mb[4];
  41         struct rsp_que *rsp;
  42         unsigned long   flags;
  43
  44         rsp = (struct rsp_que *) dev_id;
  45         if (!rsp) {
  46                 ql_log(ql_log_info, NULL, 0x505d,
  47                     "%s: NULL response queue pointer.\n", __func__);
  48                 return (IRQ_NONE);
  49         }
  50
  51         ha = rsp->hw;
  52         reg = &ha->iobase->isp;
  53         status = 0;
  54
  55         spin_lock_irqsave(&ha->hardware_lock, flags);
  56         vha = pci_get_drvdata(ha->pdev);
  57         for (iter = 50; iter--; ) {
  58                 hccr = RD_REG_WORD(&reg->hccr);
  59                 if (hccr & HCCR_RISC_PAUSE) {
  60                         if (pci_channel_offline(ha->pdev))
  61                                 break;
  62
  63                         /*
  64                          * Issue a "HARD" reset in order for the RISC interrupt
  65                          * bit to be cleared.  Schedule a big hammer to get
  66                          * out of the RISC PAUSED state.
  67                          */
  68                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  69                         RD_REG_WORD(&reg->hccr);
  70
  71                         ha->isp_ops->fw_dump(vha, 1);
  72                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  73                         break;
  74                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  75                         break;
  76
  77                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  78                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  79                         RD_REG_WORD(&reg->hccr);
  80
  81                         /* Get mailbox data. */
  82                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  83                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  84                                 qla2x00_mbx_completion(vha, mb[0]);
  85                                 status |= MBX_INTERRUPT;
  86                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
  87                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
  88                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
  89                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
  90                                 qla2x00_async_event(vha, rsp, mb);
  91                         } else {
  92                                 /*EMPTY*/
  93                                 ql_dbg(ql_dbg_async, vha, 0x5025,
  94                                     "Unrecognized interrupt type (%d).\n",
  95                                     mb[0]);
  96                         }
  97                         /* Release mailbox registers. */
  98                         WRT_REG_WORD(&reg->semaphore, 0);
  99                         RD_REG_WORD(&reg->semaphore);
 100                 } else {
 101                         qla2x00_process_response_queue(rsp);
 102
 103                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 104                         RD_REG_WORD(&reg->hccr);
 105                 }
 106         }
 107         qla2x00_handle_mbx_completion(ha, status);
 108         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 109
 110         return (IRQ_HANDLED);
 111 }
 112
 113 /**
 114  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 115  * @irq:
 116  * @dev_id: SCSI driver HA context
 117  *
 118  * Called by system whenever the host adapter generates an interrupt.
 119  *
 120  * Returns handled flag.
 121  */
 122 irqreturn_t
 123 qla2300_intr_handler(int irq, void *dev_id)
 124 {
 125         scsi_qla_host_t *vha;
 126         struct device_reg_2xxx __iomem *reg;
 127         int             status;
 128         unsigned long   iter;
 129         uint32_t        stat;
 130         uint16_t        hccr;
 131         uint16_t        mb[4];
 132         struct rsp_que *rsp;
 133         struct qla_hw_data *ha;
 134         unsigned long   flags;
 135
 136         rsp = (struct rsp_que *) dev_id;
 137         if (!rsp) {
 138                 ql_log(ql_log_info, NULL, 0x5058,
 139                     "%s: NULL response queue pointer.\n", __func__);
 140                 return (IRQ_NONE);
 141         }
 142
 143         ha = rsp->hw;
 144         reg = &ha->iobase->isp;
 145         status = 0;
 146
 147         spin_lock_irqsave(&ha->hardware_lock, flags);
 148         vha = pci_get_drvdata(ha->pdev);
 149         for (iter = 50; iter--; ) {
 150                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 151                 if (stat & HSR_RISC_PAUSED) {
 152                         if (unlikely(pci_channel_offline(ha->pdev)))
 153                                 break;
 154
 155                         hccr = RD_REG_WORD(&reg->hccr);
 156                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 157                                 ql_log(ql_log_warn, vha, 0x5026,
 158                                     "Parity error -- HCCR=%x, Dumping "
 159                                     "firmware.\n", hccr);
 160                         else
 161                                 ql_log(ql_log_warn, vha, 0x5027,
 162                                     "RISC paused -- HCCR=%x, Dumping "
 163                                     "firmware.\n", hccr);
 164
 165                         /*
 166                          * Issue a "HARD" reset in order for the RISC
 167                          * interrupt bit to be cleared.  Schedule a big
 168                          * hammer to get out of the RISC PAUSED state.
 169                          */
 170                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 171                         RD_REG_WORD(&reg->hccr);
 172
 173                         ha->isp_ops->fw_dump(vha, 1);
 174                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 175                         break;
 176                 } else if ((stat & HSR_RISC_INT) == 0)
 177                         break;
 178
 179                 switch (stat & 0xff) {
 180                 case 0x1:
 181                 case 0x2:
 182                 case 0x10:
 183                 case 0x11:
 184                         qla2x00_mbx_completion(vha, MSW(stat));
 185                         status |= MBX_INTERRUPT;
 186
 187                         /* Release mailbox registers. */
 188                         WRT_REG_WORD(&reg->semaphore, 0);
 189                         break;
 190                 case 0x12:
 191                         mb[0] = MSW(stat);
 192                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 193                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 194                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 195                         qla2x00_async_event(vha, rsp, mb);
 196                         break;
 197                 case 0x13:
 198                         qla2x00_process_response_queue(rsp);
 199                         break;
 200                 case 0x15:
 201                         mb[0] = MBA_CMPLT_1_16BIT;
 202                         mb[1] = MSW(stat);
 203                         qla2x00_async_event(vha, rsp, mb);
 204                         break;
 205                 case 0x16:
 206                         mb[0] = MBA_SCSI_COMPLETION;
 207                         mb[1] = MSW(stat);
 208                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 209                         qla2x00_async_event(vha, rsp, mb);
 210                         break;
 211                 default:
 212                         ql_dbg(ql_dbg_async, vha, 0x5028,
 213                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 214                         break;
 215                 }
 216                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 217                 RD_REG_WORD_RELAXED(&reg->hccr);
 218         }
 219         qla2x00_handle_mbx_completion(ha, status);
 220         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 221
 222         return (IRQ_HANDLED);
 223 }
 224
 225 /**
 226  * qla2x00_mbx_completion() - Process mailbox command completions.
 227  * @ha: SCSI driver HA context
 228  * @mb0: Mailbox0 register
 229  */
 230 static void
 231 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 232 {
 233         uint16_t        cnt;
 234         uint32_t        mboxes;
 235         uint16_t __iomem *wptr;
 236         struct qla_hw_data *ha = vha->hw;
 237         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 238
 239         /* Read all mbox registers? */
 240         mboxes = (1 << ha->mbx_count) - 1;
 241         if (!ha->mcp)
 242                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
 243         else
 244                 mboxes = ha->mcp->in_mb;
 245
 246         /* Load return mailbox registers. */
 247         ha->flags.mbox_int = 1;
 248         ha->mailbox_out[0] = mb0;
 249         mboxes >>= 1;
 250         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 251
 252         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 253                 if (IS_QLA2200(ha) && cnt == 8)
 254                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 255                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 256                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 257                 else if (mboxes & BIT_0)
 258                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 259
 260                 wptr++;
 261                 mboxes >>= 1;
 262         }
 263 }
 264
 265 static void
 266 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 267 {
 268         static char *event[] =
 269                 { "Complete", "Request Notification", "Time Extension" };
 270         int rval;
 271         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 272         uint16_t __iomem *wptr;
 273         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 274
 275         /* Seed data -- mailbox1 -> mailbox7. */
 276         wptr = (uint16_t __iomem *)&reg24->mailbox1;
 277         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 278                 mb[cnt] = RD_REG_WORD(wptr);
 279
 280         ql_dbg(ql_dbg_async, vha, 0x5021,
 281             "Inter-Driver Communication %s -- "
 282             "%04x %04x %04x %04x %04x %04x %04x.\n",
 283             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 284             mb[4], mb[5], mb[6]);
 285         switch (aen) {
 286         /* Handle IDC Error completion case. */
 287         case MBA_IDC_COMPLETE:
 288                 if (mb[1] >> 15) {
 289                         vha->hw->flags.idc_compl_status = 1;
 290                         if (vha->hw->notify_dcbx_comp)
 291                                 complete(&vha->hw->dcbx_comp);
 292                 }
 293                 break;
 294
 295         case MBA_IDC_NOTIFY:
 296                 /* Acknowledgement needed? [Notify && non-zero timeout]. */
 297                 timeout = (descr >> 8) & 0xf;
 298                 ql_dbg(ql_dbg_async, vha, 0x5022,
 299                     "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 300                     vha->host_no, event[aen & 0xff], timeout);
 301
 302                 if (!timeout)
 303                         return;
 304                 rval = qla2x00_post_idc_ack_work(vha, mb);
 305                 if (rval != QLA_SUCCESS)
 306                         ql_log(ql_log_warn, vha, 0x5023,
 307                             "IDC failed to post ACK.\n");
 308                 break;
 309         case MBA_IDC_TIME_EXT:
 310                 vha->hw->idc_extend_tmo = descr;
 311                 ql_dbg(ql_dbg_async, vha, 0x5087,
 312                     "%lu Inter-Driver Communication %s -- "
 313                     "Extend timeout by=%d.\n",
 314                     vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
 315                 break;
 316         }
 317 }
 318
 319 #define LS_UNKNOWN      2
 320 const char *
 321 qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
 322 {
 323         static const char * const link_speeds[] = {
 324                 "1", "2", "?", "4", "8", "16", "10"
 325         };
 326
 327         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 328                 return link_speeds[0];
 329         else if (speed == 0x13)
 330                 return link_speeds[6];
 331         else if (speed < 6)
 332                 return link_speeds[speed];
 333         else
 334                 return link_speeds[LS_UNKNOWN];
 335 }
 336
 337 static void
 338 qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 339 {
 340         struct qla_hw_data *ha = vha->hw;
 341
 342         /*
 343          * 8200 AEN Interpretation:
 344          * mb[0] = AEN code
 345          * mb[1] = AEN Reason code
 346          * mb[2] = LSW of Peg-Halt Status-1 Register
 347          * mb[6] = MSW of Peg-Halt Status-1 Register
 348          * mb[3] = LSW of Peg-Halt Status-2 register
 349          * mb[7] = MSW of Peg-Halt Status-2 register
 350          * mb[4] = IDC Device-State Register value
 351          * mb[5] = IDC Driver-Presence Register value
 352          */
 353         ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
 354             "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
 355             mb[0], mb[1], mb[2], mb[6]);
 356         ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
 357             "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
 358             "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);
 359
 360         if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
 361                                 IDC_HEARTBEAT_FAILURE)) {
 362                 ha->flags.nic_core_hung = 1;
 363                 ql_log(ql_log_warn, vha, 0x5060,
 364                     "83XX: F/W Error Reported: Check if reset required.\n");
 365
 366                 if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
 367                         uint32_t protocol_engine_id, fw_err_code, err_level;
 368
 369                         /*
 370                          * IDC_PEG_HALT_STATUS_CHANGE interpretation:
 371                          *  - PEG-Halt Status-1 Register:
 372                          *      (LSW = mb[2], MSW = mb[6])
 373                          *      Bits 0-7   = protocol-engine ID
 374                          *      Bits 8-28  = f/w error code
 375                          *      Bits 29-31 = Error-level
 376                          *          Error-level 0x1 = Non-Fatal error
 377                          *          Error-level 0x2 = Recoverable Fatal error
 378                          *          Error-level 0x4 = UnRecoverable Fatal error
 379                          *  - PEG-Halt Status-2 Register:
 380                          *      (LSW = mb[3], MSW = mb[7])
 381                          */
 382                         protocol_engine_id = (mb[2] & 0xff);
 383                         fw_err_code = (((mb[2] & 0xff00) >> 8) |
 384                             ((mb[6] & 0x1fff) << 8));
 385                         err_level = ((mb[6] & 0xe000) >> 13);
 386                         ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
 387                             "Register: protocol_engine_id=0x%x "
 388                             "fw_err_code=0x%x err_level=0x%x.\n",
 389                             protocol_engine_id, fw_err_code, err_level);
 390                         ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
 391                             "Register: 0x%x%x.\n", mb[7], mb[3]);
 392                         if (err_level == ERR_LEVEL_NON_FATAL) {
 393                                 ql_log(ql_log_warn, vha, 0x5063,
 394                                     "Not a fatal error, f/w has recovered "
 395                                     "iteself.\n");
 396                         } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
 397                                 ql_log(ql_log_fatal, vha, 0x5064,
 398                                     "Recoverable Fatal error: Chip reset "
 399                                     "required.\n");
 400                                 qla83xx_schedule_work(vha,
 401                                     QLA83XX_NIC_CORE_RESET);
 402                         } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
 403                                 ql_log(ql_log_fatal, vha, 0x5065,
 404                                     "Unrecoverable Fatal error: Set FAILED "
 405                                     "state, reboot required.\n");
 406                                 qla83xx_schedule_work(vha,
 407                                     QLA83XX_NIC_CORE_UNRECOVERABLE);
 408                         }
 409                 }
 410
 411                 if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
 412                         uint16_t peg_fw_state, nw_interface_link_up;
 413                         uint16_t nw_interface_signal_detect, sfp_status;
 414                         uint16_t htbt_counter, htbt_monitor_enable;
 415                         uint16_t sfp_additonal_info, sfp_multirate;
 416                         uint16_t sfp_tx_fault, link_speed, dcbx_status;
 417
 418                         /*
 419                          * IDC_NIC_FW_REPORTED_FAILURE interpretation:
 420                          *  - PEG-to-FC Status Register:
 421                          *      (LSW = mb[2], MSW = mb[6])
 422                          *      Bits 0-7   = Peg-Firmware state
 423                          *      Bit 8      = N/W Interface Link-up
 424                          *      Bit 9      = N/W Interface signal detected
 425                          *      Bits 10-11 = SFP Status
 426                          *        SFP Status 0x0 = SFP+ transceiver not expected
 427                          *        SFP Status 0x1 = SFP+ transceiver not present
 428                          *        SFP Status 0x2 = SFP+ transceiver invalid
 429                          *        SFP Status 0x3 = SFP+ transceiver present and
 430                          *        valid
 431                          *      Bits 12-14 = Heartbeat Counter
 432                          *      Bit 15     = Heartbeat Monitor Enable
 433                          *      Bits 16-17 = SFP Additional Info
 434                          *        SFP info 0x0 = Unregocnized transceiver for
 435                          *        Ethernet
 436                          *        SFP info 0x1 = SFP+ brand validation failed
 437                          *        SFP info 0x2 = SFP+ speed validation failed
 438                          *        SFP info 0x3 = SFP+ access error
 439                          *      Bit 18     = SFP Multirate
 440                          *      Bit 19     = SFP Tx Fault
 441                          *      Bits 20-22 = Link Speed
 442                          *      Bits 23-27 = Reserved
 443                          *      Bits 28-30 = DCBX Status
 444                          *        DCBX Status 0x0 = DCBX Disabled
 445                          *        DCBX Status 0x1 = DCBX Enabled
 446                          *        DCBX Status 0x2 = DCBX Exchange error
 447                          *      Bit 31     = Reserved
 448                          */
 449                         peg_fw_state = (mb[2] & 0x00ff);
 450                         nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
 451                         nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
 452                         sfp_status = ((mb[2] & 0x0c00) >> 10);
 453                         htbt_counter = ((mb[2] & 0x7000) >> 12);
 454                         htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
 455                         sfp_additonal_info = (mb[6] & 0x0003);
 456                         sfp_multirate = ((mb[6] & 0x0004) >> 2);
 457                         sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
 458                         link_speed = ((mb[6] & 0x0070) >> 4);
 459                         dcbx_status = ((mb[6] & 0x7000) >> 12);
 460
 461                         ql_log(ql_log_warn, vha, 0x5066,
 462                             "Peg-to-Fc Status Register:\n"
 463                             "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
 464                             "nw_interface_signal_detect=0x%x"
 465                             "\nsfp_statis=0x%x.\n ", peg_fw_state,
 466                             nw_interface_link_up, nw_interface_signal_detect,
 467                             sfp_status);
 468                         ql_log(ql_log_warn, vha, 0x5067,
 469                             "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
 470                             "sfp_additonal_info=0x%x, sfp_multirate=0x%x.\n ",
 471                             htbt_counter, htbt_monitor_enable,
 472                             sfp_additonal_info, sfp_multirate);
 473                         ql_log(ql_log_warn, vha, 0x5068,
 474                             "sfp_tx_fault=0x%x, link_state=0x%x, "
 475                             "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
 476                             dcbx_status);
 477
 478                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 479                 }
 480
 481                 if (mb[1] & IDC_HEARTBEAT_FAILURE) {
 482                         ql_log(ql_log_warn, vha, 0x5069,
 483                             "Heartbeat Failure encountered, chip reset "
 484                             "required.\n");
 485
 486                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 487                 }
 488         }
 489
 490         if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
 491                 ql_log(ql_log_info, vha, 0x506a,
 492                     "IDC Device-State changed = 0x%x.\n", mb[4]);
 493                 if (ha->flags.nic_core_reset_owner)
 494                         return;
 495                 qla83xx_schedule_work(vha, MBA_IDC_AEN);
 496         }
 497 }
 498
 499 int
 500 qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
 501 {
 502         struct qla_hw_data *ha = vha->hw;
 503         scsi_qla_host_t *vp;
 504         uint32_t vp_did;
 505         unsigned long flags;
 506         int ret = 0;
 507
 508         if (!ha->num_vhosts)
 509                 return ret;
 510
 511         spin_lock_irqsave(&ha->vport_slock, flags);
 512         list_for_each_entry(vp, &ha->vp_list, list) {
 513                 vp_did = vp->d_id.b24;
 514                 if (vp_did == rscn_entry) {
 515                         ret = 1;
 516                         break;
 517                 }
 518         }
 519         spin_unlock_irqrestore(&ha->vport_slock, flags);
 520
 521         return ret;
 522 }
 523
 524 /**
 525  * qla2x00_async_event() - Process aynchronous events.
 526  * @ha: SCSI driver HA context
 527  * @mb: Mailbox registers (0 - 3)
 528  */
 529 void
 530 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 531 {
 532         uint16_t        handle_cnt;
 533         uint16_t        cnt, mbx;
 534         uint32_t        handles[5];
 535         struct qla_hw_data *ha = vha->hw;
 536         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 537         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 538         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 539         uint32_t        rscn_entry, host_pid;
 540         unsigned long   flags;
 541
 542         /* Setup to process RIO completion. */
 543         handle_cnt = 0;
 544         if (IS_CNA_CAPABLE(ha))
 545                 goto skip_rio;
 546         switch (mb[0]) {
 547         case MBA_SCSI_COMPLETION:
 548                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 549                 handle_cnt = 1;
 550                 break;
 551         case MBA_CMPLT_1_16BIT:
 552                 handles[0] = mb[1];
 553                 handle_cnt = 1;
 554                 mb[0] = MBA_SCSI_COMPLETION;
 555                 break;
 556         case MBA_CMPLT_2_16BIT:
 557                 handles[0] = mb[1];
 558                 handles[1] = mb[2];
 559                 handle_cnt = 2;
 560                 mb[0] = MBA_SCSI_COMPLETION;
 561                 break;
 562         case MBA_CMPLT_3_16BIT:
 563                 handles[0] = mb[1];
 564                 handles[1] = mb[2];
 565                 handles[2] = mb[3];
 566                 handle_cnt = 3;
 567                 mb[0] = MBA_SCSI_COMPLETION;
 568                 break;
 569         case MBA_CMPLT_4_16BIT:
 570                 handles[0] = mb[1];
 571                 handles[1] = mb[2];
 572                 handles[2] = mb[3];
 573                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 574                 handle_cnt = 4;
 575                 mb[0] = MBA_SCSI_COMPLETION;
 576                 break;
 577         case MBA_CMPLT_5_16BIT:
 578                 handles[0] = mb[1];
 579                 handles[1] = mb[2];
 580                 handles[2] = mb[3];
 581                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 582                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 583                 handle_cnt = 5;
 584                 mb[0] = MBA_SCSI_COMPLETION;
 585                 break;
 586         case MBA_CMPLT_2_32BIT:
 587                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 588                 handles[1] = le32_to_cpu(
 589                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 590                     RD_MAILBOX_REG(ha, reg, 6));
 591                 handle_cnt = 2;
 592                 mb[0] = MBA_SCSI_COMPLETION;
 593                 break;
 594         default:
 595                 break;
 596         }
 597 skip_rio:
 598         switch (mb[0]) {
 599         case MBA_SCSI_COMPLETION:       /* Fast Post */
 600                 if (!vha->flags.online)
 601                         break;
 602
 603                 for (cnt = 0; cnt < handle_cnt; cnt++)
 604                         qla2x00_process_completed_request(vha, rsp->req,
 605                                 handles[cnt]);
 606                 break;
 607
 608         case MBA_RESET:                 /* Reset */
 609                 ql_dbg(ql_dbg_async, vha, 0x5002,
 610                     "Asynchronous RESET.\n");
 611
 612                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 613                 break;
 614
 615         case MBA_SYSTEM_ERR:            /* System Error */
 616                 mbx = (IS_QLA81XX(ha) || IS_QLA83XX(ha)) ?
 617                         RD_REG_WORD(&reg24->mailbox7) : 0;
 618                 ql_log(ql_log_warn, vha, 0x5003,
 619                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 620                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 621
 622                 ha->isp_ops->fw_dump(vha, 1);
 623
 624                 if (IS_FWI2_CAPABLE(ha)) {
 625                         if (mb[1] == 0 && mb[2] == 0) {
 626                                 ql_log(ql_log_fatal, vha, 0x5004,
 627                                     "Unrecoverable Hardware Error: adapter "
 628                                     "marked OFFLINE!\n");
 629                                 vha->flags.online = 0;
 630                                 vha->device_flags |= DFLG_DEV_FAILED;
 631                         } else {
 632                                 /* Check to see if MPI timeout occurred */
 633                                 if ((mbx & MBX_3) && (ha->flags.port0))
 634                                         set_bit(MPI_RESET_NEEDED,
 635                                             &vha->dpc_flags);
 636
 637                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 638                         }
 639                 } else if (mb[1] == 0) {
 640                         ql_log(ql_log_fatal, vha, 0x5005,
 641                             "Unrecoverable Hardware Error: adapter marked "
 642                             "OFFLINE!\n");
 643                         vha->flags.online = 0;
 644                         vha->device_flags |= DFLG_DEV_FAILED;
 645                 } else
 646                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 647                 break;
 648
 649         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 650                 ql_log(ql_log_warn, vha, 0x5006,
 651                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 652
 653                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 654                 break;
 655
 656         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 657                 ql_log(ql_log_warn, vha, 0x5007,
 658                     "ISP Response Transfer Error.\n");
 659
 660                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 661                 break;
 662
 663         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 664                 ql_dbg(ql_dbg_async, vha, 0x5008,
 665                     "Asynchronous WAKEUP_THRES.\n");
 666
 667                 break;
 668         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 669                 ql_dbg(ql_dbg_async, vha, 0x5009,
 670                     "LIP occurred (%x).\n", mb[1]);
 671
 672                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 673                         atomic_set(&vha->loop_state, LOOP_DOWN);
 674                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 675                         qla2x00_mark_all_devices_lost(vha, 1);
 676                 }
 677
 678                 if (vha->vp_idx) {
 679                         atomic_set(&vha->vp_state, VP_FAILED);
 680                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 681                 }
 682
 683                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 684                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 685
 686                 vha->flags.management_server_logged_in = 0;
 687                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 688                 break;
 689
 690         case MBA_LOOP_UP:               /* Loop Up Event */
 691                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 692                         ha->link_data_rate = PORT_SPEED_1GB;
 693                 else
 694                         ha->link_data_rate = mb[1];
 695
 696                 ql_dbg(ql_dbg_async, vha, 0x500a,
 697                     "LOOP UP detected (%s Gbps).\n",
 698                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 699
 700                 vha->flags.management_server_logged_in = 0;
 701                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 702                 break;
 703
 704         case MBA_LOOP_DOWN:             /* Loop Down Event */
 705                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 706                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 707                 mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
 708                         : mbx;
 709                 ql_dbg(ql_dbg_async, vha, 0x500b,
 710                     "LOOP DOWN detected (%x %x %x %x).\n",
 711                     mb[1], mb[2], mb[3], mbx);
 712
 713                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 714                         atomic_set(&vha->loop_state, LOOP_DOWN);
 715                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 716                         vha->device_flags |= DFLG_NO_CABLE;
 717                         qla2x00_mark_all_devices_lost(vha, 1);
 718                 }
 719
 720                 if (vha->vp_idx) {
 721                         atomic_set(&vha->vp_state, VP_FAILED);
 722                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 723                 }
 724
 725                 vha->flags.management_server_logged_in = 0;
 726                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 727                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 728                 break;
 729
 730         case MBA_LIP_RESET:             /* LIP reset occurred */
 731                 ql_dbg(ql_dbg_async, vha, 0x500c,
 732                     "LIP reset occurred (%x).\n", mb[1]);
 733
 734                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 735                         atomic_set(&vha->loop_state, LOOP_DOWN);
 736                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 737                         qla2x00_mark_all_devices_lost(vha, 1);
 738                 }
 739
 740                 if (vha->vp_idx) {
 741                         atomic_set(&vha->vp_state, VP_FAILED);
 742                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 743                 }
 744
 745                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 746
 747                 ha->operating_mode = LOOP;
 748                 vha->flags.management_server_logged_in = 0;
 749                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 750                 break;
 751
 752         /* case MBA_DCBX_COMPLETE: */
 753         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 754                 if (IS_QLA2100(ha))
 755                         break;
 756
 757                 if (IS_CNA_CAPABLE(ha)) {
 758                         ql_dbg(ql_dbg_async, vha, 0x500d,
 759                             "DCBX Completed -- %04x %04x %04x.\n",
 760                             mb[1], mb[2], mb[3]);
 761                         if (ha->notify_dcbx_comp)
 762                                 complete(&ha->dcbx_comp);
 763
 764                 } else
 765                         ql_dbg(ql_dbg_async, vha, 0x500e,
 766                             "Asynchronous P2P MODE received.\n");
 767
 768                 /*
 769                  * Until there's a transition from loop down to loop up, treat
 770                  * this as loop down only.
 771                  */
 772                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 773                         atomic_set(&vha->loop_state, LOOP_DOWN);
 774                         if (!atomic_read(&vha->loop_down_timer))
 775                                 atomic_set(&vha->loop_down_timer,
 776                                     LOOP_DOWN_TIME);
 777                         qla2x00_mark_all_devices_lost(vha, 1);
 778                 }
 779
 780                 if (vha->vp_idx) {
 781                         atomic_set(&vha->vp_state, VP_FAILED);
 782                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 783                 }
 784
 785                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 786                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 787
 788                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 789                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 790
 791                 ha->flags.gpsc_supported = 1;
 792                 vha->flags.management_server_logged_in = 0;
 793                 break;
 794
 795         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 796                 if (IS_QLA2100(ha))
 797                         break;
 798
 799                 ql_dbg(ql_dbg_async, vha, 0x500f,
 800                     "Configuration change detected: value=%x.\n", mb[1]);
 801
 802                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 803                         atomic_set(&vha->loop_state, LOOP_DOWN);
 804                         if (!atomic_read(&vha->loop_down_timer))
 805                                 atomic_set(&vha->loop_down_timer,
 806                                     LOOP_DOWN_TIME);
 807                         qla2x00_mark_all_devices_lost(vha, 1);
 808                 }
 809
 810                 if (vha->vp_idx) {
 811                         atomic_set(&vha->vp_state, VP_FAILED);
 812                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 813                 }
 814
 815                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 816                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 817                 break;
 818
 819         case MBA_PORT_UPDATE:           /* Port database update */
 820                 /*
 821                  * Handle only global and vn-port update events
 822                  *
 823                  * Relevant inputs:
 824                  * mb[1] = N_Port handle of changed port
 825                  * OR 0xffff for global event
 826                  * mb[2] = New login state
 827                  * 7 = Port logged out
 828                  * mb[3] = LSB is vp_idx, 0xff = all vps
 829                  *
 830                  * Skip processing if:
 831                  *       Event is global, vp_idx is NOT all vps,
 832                  *           vp_idx does not match
 833                  *       Event is not global, vp_idx does not match
 834                  */
 835                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 836                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 837                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 838                         break;
 839
 840                 /* Global event -- port logout or port unavailable. */
 841                 if (mb[1] == 0xffff && mb[2] == 0x7) {
 842                         ql_dbg(ql_dbg_async, vha, 0x5010,
 843                             "Port unavailable %04x %04x %04x.\n",
 844                             mb[1], mb[2], mb[3]);
 845                         ql_log(ql_log_warn, vha, 0x505e,
 846                             "Link is offline.\n");
 847
 848                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 849                                 atomic_set(&vha->loop_state, LOOP_DOWN);
 850                                 atomic_set(&vha->loop_down_timer,
 851                                     LOOP_DOWN_TIME);
 852                                 vha->device_flags |= DFLG_NO_CABLE;
 853                                 qla2x00_mark_all_devices_lost(vha, 1);
 854                         }
 855
 856                         if (vha->vp_idx) {
 857                                 atomic_set(&vha->vp_state, VP_FAILED);
 858                                 fc_vport_set_state(vha->fc_vport,
 859                                     FC_VPORT_FAILED);
 860                                 qla2x00_mark_all_devices_lost(vha, 1);
 861                         }
 862
 863                         vha->flags.management_server_logged_in = 0;
 864                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
 865                         break;
 866                 }
 867
 868                 /*
 869                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
 870                  * event etc. earlier indicating loop is down) then process
 871                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 872                  */
 873                 atomic_set(&vha->loop_down_timer, 0);
 874                 if (mb[1] != 0xffff || (mb[2] != 0x6 && mb[2] != 0x4)) {
 875                         ql_dbg(ql_dbg_async, vha, 0x5011,
 876                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
 877                             mb[1], mb[2], mb[3]);
 878
 879                         qlt_async_event(mb[0], vha, mb);
 880                         break;
 881                 }
 882
 883                 ql_dbg(ql_dbg_async, vha, 0x5012,
 884                     "Port database changed %04x %04x %04x.\n",
 885                     mb[1], mb[2], mb[3]);
 886                 ql_log(ql_log_warn, vha, 0x505f,
 887                     "Link is operational (%s Gbps).\n",
 888                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 889
 890                 /*
 891                  * Mark all devices as missing so we will login again.
 892                  */
 893                 atomic_set(&vha->loop_state, LOOP_UP);
 894
 895                 qla2x00_mark_all_devices_lost(vha, 1);
 896
 897                 if (vha->vp_idx == 0 && !qla_ini_mode_enabled(vha))
 898                         set_bit(SCR_PENDING, &vha->dpc_flags);
 899
 900                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 901                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 902
 903                 qlt_async_event(mb[0], vha, mb);
 904                 break;
 905
 906         case MBA_RSCN_UPDATE:           /* State Change Registration */
 907                 /* Check if the Vport has issued a SCR */
 908                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
 909                         break;
 910                 /* Only handle SCNs for our Vport index. */
 911                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
 912                         break;
 913
 914                 ql_dbg(ql_dbg_async, vha, 0x5013,
 915                     "RSCN database changed -- %04x %04x %04x.\n",
 916                     mb[1], mb[2], mb[3]);
 917
 918                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
 919                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
 920                                 | vha->d_id.b.al_pa;
 921                 if (rscn_entry == host_pid) {
 922                         ql_dbg(ql_dbg_async, vha, 0x5014,
 923                             "Ignoring RSCN update to local host "
 924                             "port ID (%06x).\n", host_pid);
 925                         break;
 926                 }
 927
 928                 /* Ignore reserved bits from RSCN-payload. */
 929                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
 930
 931                 /* Skip RSCNs for virtual ports on the same physical port */
 932                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
 933                         break;
 934
 935                 atomic_set(&vha->loop_down_timer, 0);
 936                 vha->flags.management_server_logged_in = 0;
 937
 938                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 939                 set_bit(RSCN_UPDATE, &vha->dpc_flags);
 940                 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
 941                 break;
 942
 943         /* case MBA_RIO_RESPONSE: */
 944         case MBA_ZIO_RESPONSE:
 945                 ql_dbg(ql_dbg_async, vha, 0x5015,
 946                     "[R|Z]IO update completion.\n");
 947
 948                 if (IS_FWI2_CAPABLE(ha))
 949                         qla24xx_process_response_queue(vha, rsp);
 950                 else
 951                         qla2x00_process_response_queue(rsp);
 952                 break;
 953
 954         case MBA_DISCARD_RND_FRAME:
 955                 ql_dbg(ql_dbg_async, vha, 0x5016,
 956                     "Discard RND Frame -- %04x %04x %04x.\n",
 957                     mb[1], mb[2], mb[3]);
 958                 break;
 959
 960         case MBA_TRACE_NOTIFICATION:
 961                 ql_dbg(ql_dbg_async, vha, 0x5017,
 962                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
 963                 break;
 964
 965         case MBA_ISP84XX_ALERT:
 966                 ql_dbg(ql_dbg_async, vha, 0x5018,
 967                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
 968                     mb[1], mb[2], mb[3]);
 969
 970                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
 971                 switch (mb[1]) {
 972                 case A84_PANIC_RECOVERY:
 973                         ql_log(ql_log_info, vha, 0x5019,
 974                             "Alert 84XX: panic recovery %04x %04x.\n",
 975                             mb[2], mb[3]);
 976                         break;
 977                 case A84_OP_LOGIN_COMPLETE:
 978                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
 979                         ql_log(ql_log_info, vha, 0x501a,
 980                             "Alert 84XX: firmware version %x.\n",
 981                             ha->cs84xx->op_fw_version);
 982                         break;
 983                 case A84_DIAG_LOGIN_COMPLETE:
 984                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 985                         ql_log(ql_log_info, vha, 0x501b,
 986                             "Alert 84XX: diagnostic firmware version %x.\n",
 987                             ha->cs84xx->diag_fw_version);
 988                         break;
 989                 case A84_GOLD_LOGIN_COMPLETE:
 990                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
 991                         ha->cs84xx->fw_update = 1;
 992                         ql_log(ql_log_info, vha, 0x501c,
 993                             "Alert 84XX: gold firmware version %x.\n",
 994                             ha->cs84xx->gold_fw_version);
 995                         break;
 996                 default:
 997                         ql_log(ql_log_warn, vha, 0x501d,
 998                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
 999                             mb[1], mb[2], mb[3]);
1000                 }
1001                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1002                 break;
1003         case MBA_DCBX_START:
1004                 ql_dbg(ql_dbg_async, vha, 0x501e,
1005                     "DCBX Started -- %04x %04x %04x.\n",
1006                     mb[1], mb[2], mb[3]);
1007                 break;
1008         case MBA_DCBX_PARAM_UPDATE:
1009                 ql_dbg(ql_dbg_async, vha, 0x501f,
1010                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1011                     mb[1], mb[2], mb[3]);
1012                 break;
1013         case MBA_FCF_CONF_ERR:
1014                 ql_dbg(ql_dbg_async, vha, 0x5020,
1015                     "FCF Configuration Error -- %04x %04x %04x.\n",
1016                     mb[1], mb[2], mb[3]);
1017                 break;
1018         case MBA_IDC_NOTIFY:
1019                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1020                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1021                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1022                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1023                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1024                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1025                                 /*
1026                                  * Extend loop down timer since port is active.
1027                                  */
1028                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1029                                         atomic_set(&vha->loop_down_timer,
1030                                             LOOP_DOWN_TIME);
1031                                 qla2xxx_wake_dpc(vha);
1032                         }
1033                 }
1034         case MBA_IDC_COMPLETE:
1035                 if (ha->notify_lb_portup_comp)
1036                         complete(&ha->lb_portup_comp);
1037                 /* Fallthru */
1038         case MBA_IDC_TIME_EXT:
1039                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1040                     IS_QLA8044(ha))
1041                         qla81xx_idc_event(vha, mb[0], mb[1]);
1042                 break;
1043
1044         case MBA_IDC_AEN:
1045                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1046                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1047                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1048                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1049                 qla83xx_handle_8200_aen(vha, mb);
1050                 break;
1051
1052         default:
1053                 ql_dbg(ql_dbg_async, vha, 0x5057,
1054                     "Unknown AEN:%04x %04x %04x %04x\n",
1055                     mb[0], mb[1], mb[2], mb[3]);
1056         }
1057
1058         qlt_async_event(mb[0], vha, mb);
1059
1060         if (!vha->vp_idx && ha->num_vhosts)
1061                 qla2x00_alert_all_vps(rsp, mb);
1062 }
1063
1064 /**
1065  * qla2x00_process_completed_request() - Process a Fast Post response.
1066  * @ha: SCSI driver HA context
1067  * @index: SRB index
1068  */
1069 void
1070 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1071                                   struct req_que *req, uint32_t index)
1072 {
1073         srb_t *sp;
1074         struct qla_hw_data *ha = vha->hw;
1075
1076         /* Validate handle. */
1077         if (index >= req->num_outstanding_cmds) {
1078                 ql_log(ql_log_warn, vha, 0x3014,
1079                     "Invalid SCSI command index (%x).\n", index);
1080
1081                 if (IS_P3P_TYPE(ha))
1082                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1083                 else
1084                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1085                 return;
1086         }
1087
1088         sp = req->outstanding_cmds[index];
1089         if (sp) {
1090                 /* Free outstanding command slot. */
1091                 req->outstanding_cmds[index] = NULL;
1092
1093                 /* Save ISP completion status */
1094                 sp->done(ha, sp, DID_OK << 16);
1095         } else {
1096                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1097
1098                 if (IS_P3P_TYPE(ha))
1099                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1100                 else
1101                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1102         }
1103 }
1104
1105 srb_t *
1106 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1107     struct req_que *req, void *iocb)
1108 {
1109         struct qla_hw_data *ha = vha->hw;
1110         sts_entry_t *pkt = iocb;
1111         srb_t *sp = NULL;
1112         uint16_t index;
1113
1114         index = LSW(pkt->handle);
1115         if (index >= req->num_outstanding_cmds) {
1116                 ql_log(ql_log_warn, vha, 0x5031,
1117                     "Invalid command index (%x).\n", index);
1118                 if (IS_P3P_TYPE(ha))
1119                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1120                 else
1121                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1122                 goto done;
1123         }
1124         sp = req->outstanding_cmds[index];
1125         if (!sp) {
1126                 ql_log(ql_log_warn, vha, 0x5032,
1127                     "Invalid completion handle (%x) -- timed-out.\n", index);
1128                 return sp;
1129         }
1130         if (sp->handle != index) {
1131                 ql_log(ql_log_warn, vha, 0x5033,
1132                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1133                 return NULL;
1134         }
1135
1136         req->outstanding_cmds[index] = NULL;
1137
1138 done:
1139         return sp;
1140 }
1141
1142 static void
1143 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1144     struct mbx_entry *mbx)
1145 {
1146         const char func[] = "MBX-IOCB";
1147         const char *type;
1148         fc_port_t *fcport;
1149         srb_t *sp;
1150         struct srb_iocb *lio;
1151         uint16_t *data;
1152         uint16_t status;
1153
1154         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1155         if (!sp)
1156                 return;
1157
1158         lio = &sp->u.iocb_cmd;
1159         type = sp->name;
1160         fcport = sp->fcport;
1161         data = lio->u.logio.data;
1162
1163         data[0] = MBS_COMMAND_ERROR;
1164         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1165             QLA_LOGIO_LOGIN_RETRIED : 0;
1166         if (mbx->entry_status) {
1167                 ql_dbg(ql_dbg_async, vha, 0x5043,
1168                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1169                     "entry-status=%x status=%x state-flag=%x "
1170                     "status-flags=%x.\n", type, sp->handle,
1171                     fcport->d_id.b.domain, fcport->d_id.b.area,
1172                     fcport->d_id.b.al_pa, mbx->entry_status,
1173                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1174                     le16_to_cpu(mbx->status_flags));
1175
1176                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1177                     (uint8_t *)mbx, sizeof(*mbx));
1178
1179                 goto logio_done;
1180         }
1181
1182         status = le16_to_cpu(mbx->status);
1183         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1184             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1185                 status = 0;
1186         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1187                 ql_dbg(ql_dbg_async, vha, 0x5045,
1188                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1189                     type, sp->handle, fcport->d_id.b.domain,
1190                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1191                     le16_to_cpu(mbx->mb1));
1192
1193                 data[0] = MBS_COMMAND_COMPLETE;
1194                 if (sp->type == SRB_LOGIN_CMD) {
1195                         fcport->port_type = FCT_TARGET;
1196                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1197                                 fcport->port_type = FCT_INITIATOR;
1198                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1199                                 fcport->flags |= FCF_FCP2_DEVICE;
1200                 }
1201                 goto logio_done;
1202         }
1203
1204         data[0] = le16_to_cpu(mbx->mb0);
1205         switch (data[0]) {
1206         case MBS_PORT_ID_USED:
1207                 data[1] = le16_to_cpu(mbx->mb1);
1208                 break;
1209         case MBS_LOOP_ID_USED:
1210                 break;
1211         default:
1212                 data[0] = MBS_COMMAND_ERROR;
1213                 break;
1214         }
1215
1216         ql_log(ql_log_warn, vha, 0x5046,
1217             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1218             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1219             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1220             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1221             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1222             le16_to_cpu(mbx->mb7));
1223
1224 logio_done:
1225         sp->done(vha, sp, 0);
1226 }
1227
1228 static void
1229 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1230     sts_entry_t *pkt, int iocb_type)
1231 {
1232         const char func[] = "CT_IOCB";
1233         const char *type;
1234         srb_t *sp;
1235         struct fc_bsg_job *bsg_job;
1236         uint16_t comp_status;
1237         int res;
1238
1239         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1240         if (!sp)
1241                 return;
1242
1243         bsg_job = sp->u.bsg_job;
1244
1245         type = "ct pass-through";
1246
1247         comp_status = le16_to_cpu(pkt->comp_status);
1248
1249         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1250          * fc payload  to the caller
1251          */
1252         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1253         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1254
1255         if (comp_status != CS_COMPLETE) {
1256                 if (comp_status == CS_DATA_UNDERRUN) {
1257                         res = DID_OK << 16;
1258                         bsg_job->reply->reply_payload_rcv_len =
1259                             le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1260
1261                         ql_log(ql_log_warn, vha, 0x5048,
1262                             "CT pass-through-%s error "
1263                             "comp_status-status=0x%x total_byte = 0x%x.\n",
1264                             type, comp_status,
1265                             bsg_job->reply->reply_payload_rcv_len);
1266                 } else {
1267                         ql_log(ql_log_warn, vha, 0x5049,
1268                             "CT pass-through-%s error "
1269                             "comp_status-status=0x%x.\n", type, comp_status);
1270                         res = DID_ERROR << 16;
1271                         bsg_job->reply->reply_payload_rcv_len = 0;
1272                 }
1273                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1274                     (uint8_t *)pkt, sizeof(*pkt));
1275         } else {
1276                 res = DID_OK << 16;
1277                 bsg_job->reply->reply_payload_rcv_len =
1278                     bsg_job->reply_payload.payload_len;
1279                 bsg_job->reply_len = 0;
1280         }
1281
1282         sp->done(vha, sp, res);
1283 }
1284
1285 static void
1286 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1287     struct sts_entry_24xx *pkt, int iocb_type)
1288 {
1289         const char func[] = "ELS_CT_IOCB";
1290         const char *type;
1291         srb_t *sp;
1292         struct fc_bsg_job *bsg_job;
1293         uint16_t comp_status;
1294         uint32_t fw_status[3];
1295         uint8_t* fw_sts_ptr;
1296         int res;
1297
1298         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1299         if (!sp)
1300                 return;
1301         bsg_job = sp->u.bsg_job;
1302
1303         type = NULL;
1304         switch (sp->type) {
1305         case SRB_ELS_CMD_RPT:
1306         case SRB_ELS_CMD_HST:
1307                 type = "els";
1308                 break;
1309         case SRB_CT_CMD:
1310                 type = "ct pass-through";
1311                 break;
1312         default:
1313                 ql_dbg(ql_dbg_user, vha, 0x503e,
1314                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1315                 return;
1316         }
1317
1318         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1319         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1320         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1321
1322         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1323          * fc payload  to the caller
1324          */
1325         bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1326         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1327
1328         if (comp_status != CS_COMPLETE) {
1329                 if (comp_status == CS_DATA_UNDERRUN) {
1330                         res = DID_OK << 16;
1331                         bsg_job->reply->reply_payload_rcv_len =
1332                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1333
1334                         ql_dbg(ql_dbg_user, vha, 0x503f,
1335                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1336                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1337                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1338                             le16_to_cpu(((struct els_sts_entry_24xx *)
1339                                 pkt)->total_byte_count));
1340                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1341                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1342                 }
1343                 else {
1344                         ql_dbg(ql_dbg_user, vha, 0x5040,
1345                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1346                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1347                             type, sp->handle, comp_status,
1348                             le16_to_cpu(((struct els_sts_entry_24xx *)
1349                                 pkt)->error_subcode_1),
1350                             le16_to_cpu(((struct els_sts_entry_24xx *)
1351                                     pkt)->error_subcode_2));
1352                         res = DID_ERROR << 16;
1353                         bsg_job->reply->reply_payload_rcv_len = 0;
1354                         fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1355                         memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1356                 }
1357                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1358                                 (uint8_t *)pkt, sizeof(*pkt));
1359         }
1360         else {
1361                 res =  DID_OK << 16;
1362                 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1363                 bsg_job->reply_len = 0;
1364         }
1365
1366         sp->done(vha, sp, res);
1367 }
1368
1369 static void
1370 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1371     struct logio_entry_24xx *logio)
1372 {
1373         const char func[] = "LOGIO-IOCB";
1374         const char *type;
1375         fc_port_t *fcport;
1376         srb_t *sp;
1377         struct srb_iocb *lio;
1378         uint16_t *data;
1379         uint32_t iop[2];
1380
1381         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1382         if (!sp)
1383                 return;
1384
1385         lio = &sp->u.iocb_cmd;
1386         type = sp->name;
1387         fcport = sp->fcport;
1388         data = lio->u.logio.data;
1389
1390         data[0] = MBS_COMMAND_ERROR;
1391         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1392                 QLA_LOGIO_LOGIN_RETRIED : 0;
1393         if (logio->entry_status) {
1394                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1395                     "Async-%s error entry - hdl=%x"
1396                     "portid=%02x%02x%02x entry-status=%x.\n",
1397                     type, sp->handle, fcport->d_id.b.domain,
1398                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1399                     logio->entry_status);
1400                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1401                     (uint8_t *)logio, sizeof(*logio));
1402
1403                 goto logio_done;
1404         }
1405
1406         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1407                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1408                     "Async-%s complete - hdl=%x portid=%02x%02x%02x "
1409                     "iop0=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1410                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1411                     le32_to_cpu(logio->io_parameter[0]));
1412
1413                 data[0] = MBS_COMMAND_COMPLETE;
1414                 if (sp->type != SRB_LOGIN_CMD)
1415                         goto logio_done;
1416
1417                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1418                 if (iop[0] & BIT_4) {
1419                         fcport->port_type = FCT_TARGET;
1420                         if (iop[0] & BIT_8)
1421                                 fcport->flags |= FCF_FCP2_DEVICE;
1422                 } else if (iop[0] & BIT_5)
1423                         fcport->port_type = FCT_INITIATOR;
1424
1425                 if (iop[0] & BIT_7)
1426                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1427
1428                 if (logio->io_parameter[7] || logio->io_parameter[8])
1429                         fcport->supported_classes |= FC_COS_CLASS2;
1430                 if (logio->io_parameter[9] || logio->io_parameter[10])
1431                         fcport->supported_classes |= FC_COS_CLASS3;
1432
1433                 goto logio_done;
1434         }
1435
1436         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1437         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1438         switch (iop[0]) {
1439         case LSC_SCODE_PORTID_USED:
1440                 data[0] = MBS_PORT_ID_USED;
1441                 data[1] = LSW(iop[1]);
1442                 break;
1443         case LSC_SCODE_NPORT_USED:
1444                 data[0] = MBS_LOOP_ID_USED;
1445                 break;
1446         default:
1447                 data[0] = MBS_COMMAND_ERROR;
1448                 break;
1449         }
1450
1451         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1452             "Async-%s failed - hdl=%x portid=%02x%02x%02x comp=%x "
1453             "iop0=%x iop1=%x.\n", type, sp->handle, fcport->d_id.b.domain,
1454             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1455             le16_to_cpu(logio->comp_status),
1456             le32_to_cpu(logio->io_parameter[0]),
1457             le32_to_cpu(logio->io_parameter[1]));
1458
1459 logio_done:
1460         sp->done(vha, sp, 0);
1461 }
1462
1463 static void
1464 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1465     struct tsk_mgmt_entry *tsk)
1466 {
1467         const char func[] = "TMF-IOCB";
1468         const char *type;
1469         fc_port_t *fcport;
1470         srb_t *sp;
1471         struct srb_iocb *iocb;
1472         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1473         int error = 1;
1474
1475         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1476         if (!sp)
1477                 return;
1478
1479         iocb = &sp->u.iocb_cmd;
1480         type = sp->name;
1481         fcport = sp->fcport;
1482
1483         if (sts->entry_status) {
1484                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1485                     "Async-%s error - hdl=%x entry-status(%x).\n",
1486                     type, sp->handle, sts->entry_status);
1487         } else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
1488                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1489                     "Async-%s error - hdl=%x completion status(%x).\n",
1490                     type, sp->handle, sts->comp_status);
1491         } else if (!(le16_to_cpu(sts->scsi_status) &
1492             SS_RESPONSE_INFO_LEN_VALID)) {
1493                 ql_log(ql_log_warn, fcport->vha, 0x503a,
1494                     "Async-%s error - hdl=%x no response info(%x).\n",
1495                     type, sp->handle, sts->scsi_status);
1496         } else if (le32_to_cpu(sts->rsp_data_len) < 4) {
1497                 ql_log(ql_log_warn, fcport->vha, 0x503b,
1498                     "Async-%s error - hdl=%x not enough response(%d).\n",
1499                     type, sp->handle, sts->rsp_data_len);
1500         } else if (sts->data[3]) {
1501                 ql_log(ql_log_warn, fcport->vha, 0x503c,
1502                     "Async-%s error - hdl=%x response(%x).\n",
1503                     type, sp->handle, sts->data[3]);
1504         } else {
1505                 error = 0;
1506         }
1507
1508         if (error) {
1509                 iocb->u.tmf.data = error;
1510                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5055,
1511                     (uint8_t *)sts, sizeof(*sts));
1512         }
1513
1514         sp->done(vha, sp, 0);
1515 }
1516
1517 /**
1518  * qla2x00_process_response_queue() - Process response queue entries.
1519  * @ha: SCSI driver HA context
1520  */
1521 void
1522 qla2x00_process_response_queue(struct rsp_que *rsp)
1523 {
1524         struct scsi_qla_host *vha;
1525         struct qla_hw_data *ha = rsp->hw;
1526         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1527         sts_entry_t     *pkt;
1528         uint16_t        handle_cnt;
1529         uint16_t        cnt;
1530
1531         vha = pci_get_drvdata(ha->pdev);
1532
1533         if (!vha->flags.online)
1534                 return;
1535
1536         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1537                 pkt = (sts_entry_t *)rsp->ring_ptr;
1538
1539                 rsp->ring_index++;
1540                 if (rsp->ring_index == rsp->length) {
1541                         rsp->ring_index = 0;
1542                         rsp->ring_ptr = rsp->ring;
1543                 } else {
1544                         rsp->ring_ptr++;
1545                 }
1546
1547                 if (pkt->entry_status != 0) {
1548                         qla2x00_error_entry(vha, rsp, pkt);
1549                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1550                         wmb();
1551                         continue;
1552                 }
1553
1554                 switch (pkt->entry_type) {
1555                 case STATUS_TYPE:
1556                         qla2x00_status_entry(vha, rsp, pkt);
1557                         break;
1558                 case STATUS_TYPE_21:
1559                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1560                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1561                                 qla2x00_process_completed_request(vha, rsp->req,
1562                                     ((sts21_entry_t *)pkt)->handle[cnt]);
1563                         }
1564                         break;
1565                 case STATUS_TYPE_22:
1566                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1567                         for (cnt = 0; cnt < handle_cnt; cnt++) {
1568                                 qla2x00_process_completed_request(vha, rsp->req,
1569                                     ((sts22_entry_t *)pkt)->handle[cnt]);
1570                         }
1571                         break;
1572                 case STATUS_CONT_TYPE:
1573                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1574                         break;
1575                 case MBX_IOCB_TYPE:
1576                         qla2x00_mbx_iocb_entry(vha, rsp->req,
1577                             (struct mbx_entry *)pkt);
1578                         break;
1579                 case CT_IOCB_TYPE:
1580                         qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1581                         break;
1582                 default:
1583                         /* Type Not Supported. */
1584                         ql_log(ql_log_warn, vha, 0x504a,
1585                             "Received unknown response pkt type %x "
1586                             "entry status=%x.\n",
1587                             pkt->entry_type, pkt->entry_status);
1588                         break;
1589                 }
1590                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1591                 wmb();
1592         }
1593
1594         /* Adjust ring index */
1595         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1596 }
1597
1598 static inline void
1599 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1600                      uint32_t sense_len, struct rsp_que *rsp, int res)
1601 {
1602         struct scsi_qla_host *vha = sp->fcport->vha;
1603         struct scsi_cmnd *cp = GET_CMD_SP(sp);
1604         uint32_t track_sense_len;
1605
1606         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1607                 sense_len = SCSI_SENSE_BUFFERSIZE;
1608
1609         SET_CMD_SENSE_LEN(sp, sense_len);
1610         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
1611         track_sense_len = sense_len;
1612
1613         if (sense_len > par_sense_len)
1614                 sense_len = par_sense_len;
1615
1616         memcpy(cp->sense_buffer, sense_data, sense_len);
1617
1618         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
1619         track_sense_len -= sense_len;
1620         SET_CMD_SENSE_LEN(sp, track_sense_len);
1621
1622         if (track_sense_len != 0) {
1623                 rsp->status_srb = sp;
1624                 cp->result = res;
1625         }
1626
1627         if (sense_len) {
1628                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
1629                     "Check condition Sense data, nexus%ld:%d:%d cmd=%p.\n",
1630                     sp->fcport->vha->host_no, cp->device->id, cp->device->lun,
1631                     cp);
1632                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
1633                     cp->sense_buffer, sense_len);
1634         }
1635 }
1636
1637 struct scsi_dif_tuple {
1638         __be16 guard;       /* Checksum */
1639         __be16 app_tag;         /* APPL identifier */
1640         __be32 ref_tag;         /* Target LBA or indirect LBA */
1641 };
1642
1643 /*
1644  * Checks the guard or meta-data for the type of error
1645  * detected by the HBA. In case of errors, we set the
1646  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1647  * to indicate to the kernel that the HBA detected error.
1648  */
1649 static inline int
1650 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1651 {
1652         struct scsi_qla_host *vha = sp->fcport->vha;
1653         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1654         uint8_t         *ap = &sts24->data[12];
1655         uint8_t         *ep = &sts24->data[20];
1656         uint32_t        e_ref_tag, a_ref_tag;
1657         uint16_t        e_app_tag, a_app_tag;
1658         uint16_t        e_guard, a_guard;
1659
1660         /*
1661          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
1662          * would make guard field appear at offset 2
1663          */
1664         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
1665         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
1666         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
1667         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
1668         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
1669         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
1670
1671         ql_dbg(ql_dbg_io, vha, 0x3023,
1672             "iocb(s) %p Returned STATUS.\n", sts24);
1673
1674         ql_dbg(ql_dbg_io, vha, 0x3024,
1675             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1676             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1677             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
1678             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1679             a_app_tag, e_app_tag, a_guard, e_guard);
1680
1681         /*
1682          * Ignore sector if:
1683          * For type     3: ref & app tag is all 'f's
1684          * For type 0,1,2: app tag is all 'f's
1685          */
1686         if ((a_app_tag == 0xffff) &&
1687             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
1688              (a_ref_tag == 0xffffffff))) {
1689                 uint32_t blocks_done, resid;
1690                 sector_t lba_s = scsi_get_lba(cmd);
1691
1692                 /* 2TB boundary case covered automatically with this */
1693                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
1694
1695                 resid = scsi_bufflen(cmd) - (blocks_done *
1696                     cmd->device->sector_size);
1697
1698                 scsi_set_resid(cmd, resid);
1699                 cmd->result = DID_OK << 16;
1700
1701                 /* Update protection tag */
1702                 if (scsi_prot_sg_count(cmd)) {
1703                         uint32_t i, j = 0, k = 0, num_ent;
1704                         struct scatterlist *sg;
1705                         struct sd_dif_tuple *spt;
1706
1707                         /* Patch the corresponding protection tags */
1708                         scsi_for_each_prot_sg(cmd, sg,
1709                             scsi_prot_sg_count(cmd), i) {
1710                                 num_ent = sg_dma_len(sg) / 8;
1711                                 if (k + num_ent < blocks_done) {
1712                                         k += num_ent;
1713                                         continue;
1714                                 }
1715                                 j = blocks_done - k - 1;
1716                                 k = blocks_done;
1717                                 break;
1718                         }
1719
1720                         if (k != blocks_done) {
1721                                 ql_log(ql_log_warn, vha, 0x302f,
1722                                     "unexpected tag values tag:lba=%x:%llx)\n",
1723                                     e_ref_tag, (unsigned long long)lba_s);
1724                                 return 1;
1725                         }
1726
1727                         spt = page_address(sg_page(sg)) + sg->offset;
1728                         spt += j;
1729
1730                         spt->app_tag = 0xffff;
1731                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
1732                                 spt->ref_tag = 0xffffffff;
1733                 }
1734
1735                 return 0;
1736         }
1737
1738         /* check guard */
1739         if (e_guard != a_guard) {
1740                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1741                     0x10, 0x1);
1742                 set_driver_byte(cmd, DRIVER_SENSE);
1743                 set_host_byte(cmd, DID_ABORT);
1744                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1745                 return 1;
1746         }
1747
1748         /* check ref tag */
1749         if (e_ref_tag != a_ref_tag) {
1750                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1751                     0x10, 0x3);
1752                 set_driver_byte(cmd, DRIVER_SENSE);
1753                 set_host_byte(cmd, DID_ABORT);
1754                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1755                 return 1;
1756         }
1757
1758         /* check appl tag */
1759         if (e_app_tag != a_app_tag) {
1760                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1761                     0x10, 0x2);
1762                 set_driver_byte(cmd, DRIVER_SENSE);
1763                 set_host_byte(cmd, DID_ABORT);
1764                 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1765                 return 1;
1766         }
1767
1768         return 1;
1769 }
1770
1771 static void
1772 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
1773                                   struct req_que *req, uint32_t index)
1774 {
1775         struct qla_hw_data *ha = vha->hw;
1776         srb_t *sp;
1777         uint16_t        comp_status;
1778         uint16_t        scsi_status;
1779         uint16_t thread_id;
1780         uint32_t rval = EXT_STATUS_OK;
1781         struct fc_bsg_job *bsg_job = NULL;
1782         sts_entry_t *sts;
1783         struct sts_entry_24xx *sts24;
1784         sts = (sts_entry_t *) pkt;
1785         sts24 = (struct sts_entry_24xx *) pkt;
1786
1787         /* Validate handle. */
1788         if (index >= req->num_outstanding_cmds) {
1789                 ql_log(ql_log_warn, vha, 0x70af,
1790                     "Invalid SCSI completion handle 0x%x.\n", index);
1791                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1792                 return;
1793         }
1794
1795         sp = req->outstanding_cmds[index];
1796         if (sp) {
1797                 /* Free outstanding command slot. */
1798                 req->outstanding_cmds[index] = NULL;
1799                 bsg_job = sp->u.bsg_job;
1800         } else {
1801                 ql_log(ql_log_warn, vha, 0x70b0,
1802                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
1803                     req->id, index);
1804
1805                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1806                 return;
1807         }
1808
1809         if (IS_FWI2_CAPABLE(ha)) {
1810                 comp_status = le16_to_cpu(sts24->comp_status);
1811                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1812         } else {
1813                 comp_status = le16_to_cpu(sts->comp_status);
1814                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1815         }
1816
1817         thread_id = bsg_job->request->rqst_data.h_vendor.vendor_cmd[1];
1818         switch (comp_status) {
1819         case CS_COMPLETE:
1820                 if (scsi_status == 0) {
1821                         bsg_job->reply->reply_payload_rcv_len =
1822                                         bsg_job->reply_payload.payload_len;
1823                         vha->qla_stats.input_bytes +=
1824                                 bsg_job->reply->reply_payload_rcv_len;
1825                         vha->qla_stats.input_requests++;
1826                         rval = EXT_STATUS_OK;
1827                 }
1828                 goto done;
1829
1830         case CS_DATA_OVERRUN:
1831                 ql_dbg(ql_dbg_user, vha, 0x70b1,
1832                     "Command completed with date overrun thread_id=%d\n",
1833                     thread_id);
1834                 rval = EXT_STATUS_DATA_OVERRUN;
1835                 break;
1836
1837         case CS_DATA_UNDERRUN:
1838                 ql_dbg(ql_dbg_user, vha, 0x70b2,
1839                     "Command completed with date underrun thread_id=%d\n",
1840                     thread_id);
1841                 rval = EXT_STATUS_DATA_UNDERRUN;
1842                 break;
1843         case CS_BIDIR_RD_OVERRUN:
1844                 ql_dbg(ql_dbg_user, vha, 0x70b3,
1845                     "Command completed with read data overrun thread_id=%d\n",
1846                     thread_id);
1847                 rval = EXT_STATUS_DATA_OVERRUN;
1848                 break;
1849
1850         case CS_BIDIR_RD_WR_OVERRUN:
1851                 ql_dbg(ql_dbg_user, vha, 0x70b4,
1852                     "Command completed with read and write data overrun "
1853                     "thread_id=%d\n", thread_id);
1854                 rval = EXT_STATUS_DATA_OVERRUN;
1855                 break;
1856
1857         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
1858                 ql_dbg(ql_dbg_user, vha, 0x70b5,
1859                     "Command completed with read data over and write data "
1860                     "underrun thread_id=%d\n", thread_id);
1861                 rval = EXT_STATUS_DATA_OVERRUN;
1862                 break;
1863
1864         case CS_BIDIR_RD_UNDERRUN:
1865                 ql_dbg(ql_dbg_user, vha, 0x70b6,
1866                     "Command completed with read data data underrun "
1867                     "thread_id=%d\n", thread_id);
1868                 rval = EXT_STATUS_DATA_UNDERRUN;
1869                 break;
1870
1871         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
1872                 ql_dbg(ql_dbg_user, vha, 0x70b7,
1873                     "Command completed with read data under and write data "
1874                     "overrun thread_id=%d\n", thread_id);
1875                 rval = EXT_STATUS_DATA_UNDERRUN;
1876                 break;
1877
1878         case CS_BIDIR_RD_WR_UNDERRUN:
1879                 ql_dbg(ql_dbg_user, vha, 0x70b8,
1880                     "Command completed with read and write data underrun "
1881                     "thread_id=%d\n", thread_id);
1882                 rval = EXT_STATUS_DATA_UNDERRUN;
1883                 break;
1884
1885         case CS_BIDIR_DMA:
1886                 ql_dbg(ql_dbg_user, vha, 0x70b9,
1887                     "Command completed with data DMA error thread_id=%d\n",
1888                     thread_id);
1889                 rval = EXT_STATUS_DMA_ERR;
1890                 break;
1891
1892         case CS_TIMEOUT:
1893                 ql_dbg(ql_dbg_user, vha, 0x70ba,
1894                     "Command completed with timeout thread_id=%d\n",
1895                     thread_id);
1896                 rval = EXT_STATUS_TIMEOUT;
1897                 break;
1898         default:
1899                 ql_dbg(ql_dbg_user, vha, 0x70bb,
1900                     "Command completed with completion status=0x%x "
1901                     "thread_id=%d\n", comp_status, thread_id);
1902                 rval = EXT_STATUS_ERR;
1903                 break;
1904         }
1905                 bsg_job->reply->reply_payload_rcv_len = 0;
1906
1907 done:
1908         /* Return the vendor specific reply to API */
1909         bsg_job->reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
1910         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1911         /* Always return DID_OK, bsg will send the vendor specific response
1912          * in this case only */
1913         sp->done(vha, sp, (DID_OK << 6));
1914
1915 }
1916
1917 /**
1918  * qla2x00_status_entry() - Process a Status IOCB entry.
1919  * @ha: SCSI driver HA context
1920  * @pkt: Entry pointer
1921  */
1922 static void
1923 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1924 {
1925         srb_t           *sp;
1926         fc_port_t       *fcport;
1927         struct scsi_cmnd *cp;
1928         sts_entry_t *sts;
1929         struct sts_entry_24xx *sts24;
1930         uint16_t        comp_status;
1931         uint16_t        scsi_status;
1932         uint16_t        ox_id;
1933         uint8_t         lscsi_status;
1934         int32_t         resid;
1935         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
1936             fw_resid_len;
1937         uint8_t         *rsp_info, *sense_data;
1938         struct qla_hw_data *ha = vha->hw;
1939         uint32_t handle;
1940         uint16_t que;
1941         struct req_que *req;
1942         int logit = 1;
1943         int res = 0;
1944         uint16_t state_flags = 0;
1945
1946         sts = (sts_entry_t *) pkt;
1947         sts24 = (struct sts_entry_24xx *) pkt;
1948         if (IS_FWI2_CAPABLE(ha)) {
1949                 comp_status = le16_to_cpu(sts24->comp_status);
1950                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1951                 state_flags = le16_to_cpu(sts24->state_flags);
1952         } else {
1953                 comp_status = le16_to_cpu(sts->comp_status);
1954                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1955         }
1956         handle = (uint32_t) LSW(sts->handle);
1957         que = MSW(sts->handle);
1958         req = ha->req_q_map[que];
1959
1960         /* Validate handle. */
1961         if (handle < req->num_outstanding_cmds)
1962                 sp = req->outstanding_cmds[handle];
1963         else
1964                 sp = NULL;
1965
1966         if (sp == NULL) {
1967                 ql_dbg(ql_dbg_io, vha, 0x3017,
1968                     "Invalid status handle (0x%x).\n", sts->handle);
1969
1970                 if (IS_P3P_TYPE(ha))
1971                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1972                 else
1973                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1974                 qla2xxx_wake_dpc(vha);
1975                 return;
1976         }
1977
1978         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
1979                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
1980                 return;
1981         }
1982
1983         /* Fast path completion. */
1984         if (comp_status == CS_COMPLETE && scsi_status == 0) {
1985                 qla2x00_do_host_ramp_up(vha);
1986                 qla2x00_process_completed_request(vha, req, handle);
1987
1988                 return;
1989         }
1990
1991         req->outstanding_cmds[handle] = NULL;
1992         cp = GET_CMD_SP(sp);
1993         if (cp == NULL) {
1994                 ql_dbg(ql_dbg_io, vha, 0x3018,
1995                     "Command already returned (0x%x/%p).\n",
1996                     sts->handle, sp);
1997
1998                 return;
1999         }
2000
2001         lscsi_status = scsi_status & STATUS_MASK;
2002
2003         fcport = sp->fcport;
2004
2005         ox_id = 0;
2006         sense_len = par_sense_len = rsp_info_len = resid_len =
2007             fw_resid_len = 0;
2008         if (IS_FWI2_CAPABLE(ha)) {
2009                 if (scsi_status & SS_SENSE_LEN_VALID)
2010                         sense_len = le32_to_cpu(sts24->sense_len);
2011                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2012                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2013                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2014                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2015                 if (comp_status == CS_DATA_UNDERRUN)
2016                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2017                 rsp_info = sts24->data;
2018                 sense_data = sts24->data;
2019                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2020                 ox_id = le16_to_cpu(sts24->ox_id);
2021                 par_sense_len = sizeof(sts24->data);
2022         } else {
2023                 if (scsi_status & SS_SENSE_LEN_VALID)
2024                         sense_len = le16_to_cpu(sts->req_sense_length);
2025                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2026                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2027                 resid_len = le32_to_cpu(sts->residual_length);
2028                 rsp_info = sts->rsp_info;
2029                 sense_data = sts->req_sense_data;
2030                 par_sense_len = sizeof(sts->req_sense_data);
2031         }
2032
2033         /* Check for any FCP transport errors. */
2034         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2035                 /* Sense data lies beyond any FCP RESPONSE data. */
2036                 if (IS_FWI2_CAPABLE(ha)) {
2037                         sense_data += rsp_info_len;
2038                         par_sense_len -= rsp_info_len;
2039                 }
2040                 if (rsp_info_len > 3 && rsp_info[3]) {
2041                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2042                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2043                             rsp_info_len, rsp_info[3]);
2044
2045                         res = DID_BUS_BUSY << 16;
2046                         goto out;
2047                 }
2048         }
2049
2050         /* Check for overrun. */
2051         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2052             scsi_status & SS_RESIDUAL_OVER)
2053                 comp_status = CS_DATA_OVERRUN;
2054
2055         /*
2056          * Based on Host and scsi status generate status code for Linux
2057          */
2058         switch (comp_status) {
2059         case CS_COMPLETE:
2060         case CS_QUEUE_FULL:
2061                 if (scsi_status == 0) {
2062                         res = DID_OK << 16;
2063                         break;
2064                 }
2065                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2066                         resid = resid_len;
2067                         scsi_set_resid(cp, resid);
2068
2069                         if (!lscsi_status &&
2070                             ((unsigned)(scsi_bufflen(cp) - resid) <
2071                              cp->underflow)) {
2072                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2073                                     "Mid-layer underflow "
2074                                     "detected (0x%x of 0x%x bytes).\n",
2075                                     resid, scsi_bufflen(cp));
2076
2077                                 res = DID_ERROR << 16;
2078                                 break;
2079                         }
2080                 }
2081                 res = DID_OK << 16 | lscsi_status;
2082
2083                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2084                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2085                             "QUEUE FULL detected.\n");
2086                         break;
2087                 }
2088                 logit = 0;
2089                 if (lscsi_status != SS_CHECK_CONDITION)
2090                         break;
2091
2092                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2093                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2094                         break;
2095
2096                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2097                     rsp, res);
2098                 break;
2099
2100         case CS_DATA_UNDERRUN:
2101                 /* Use F/W calculated residual length. */
2102                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2103                 scsi_set_resid(cp, resid);
2104                 if (scsi_status & SS_RESIDUAL_UNDER) {
2105                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2106                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2107                                     "Dropped frame(s) detected "
2108                                     "(0x%x of 0x%x bytes).\n",
2109                                     resid, scsi_bufflen(cp));
2110
2111                                 res = DID_ERROR << 16 | lscsi_status;
2112                                 goto check_scsi_status;
2113                         }
2114
2115                         if (!lscsi_status &&
2116                             ((unsigned)(scsi_bufflen(cp) - resid) <
2117                             cp->underflow)) {
2118                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2119                                     "Mid-layer underflow "
2120                                     "detected (0x%x of 0x%x bytes).\n",
2121                                     resid, scsi_bufflen(cp));
2122
2123                                 res = DID_ERROR << 16;
2124                                 break;
2125                         }
2126                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2127                             lscsi_status != SAM_STAT_BUSY) {
2128                         /*
2129                          * scsi status of task set and busy are considered to be
2130                          * task not completed.
2131                          */
2132
2133                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2134                             "Dropped frame(s) detected (0x%x "
2135                             "of 0x%x bytes).\n", resid,
2136                             scsi_bufflen(cp));
2137
2138                         res = DID_ERROR << 16 | lscsi_status;
2139                         goto check_scsi_status;
2140                 } else {
2141                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2142                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2143                             scsi_status, lscsi_status);
2144                 }
2145
2146                 res = DID_OK << 16 | lscsi_status;
2147                 logit = 0;
2148
2149 check_scsi_status:
2150                 /*
2151                  * Check to see if SCSI Status is non zero. If so report SCSI
2152                  * Status.
2153                  */
2154                 if (lscsi_status != 0) {
2155                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2156                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2157                                     "QUEUE FULL detected.\n");
2158                                 logit = 1;
2159                                 break;
2160                         }
2161                         if (lscsi_status != SS_CHECK_CONDITION)
2162                                 break;
2163
2164                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2165                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2166                                 break;
2167
2168                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2169                             sense_len, rsp, res);
2170                 }
2171                 break;
2172
2173         case CS_PORT_LOGGED_OUT:
2174         case CS_PORT_CONFIG_CHG:
2175         case CS_PORT_BUSY:
2176         case CS_INCOMPLETE:
2177         case CS_PORT_UNAVAILABLE:
2178         case CS_TIMEOUT:
2179         case CS_RESET:
2180
2181                 /*
2182                  * We are going to have the fc class block the rport
2183                  * while we try to recover so instruct the mid layer
2184                  * to requeue until the class decides how to handle this.
2185                  */
2186                 res = DID_TRANSPORT_DISRUPTED << 16;
2187
2188                 if (comp_status == CS_TIMEOUT) {
2189                         if (IS_FWI2_CAPABLE(ha))
2190                                 break;
2191                         else if ((le16_to_cpu(sts->status_flags) &
2192                             SF_LOGOUT_SENT) == 0)
2193                                 break;
2194                 }
2195
2196                 ql_dbg(ql_dbg_io, fcport->vha, 0x3021,
2197                     "Port to be marked lost on fcport=%02x%02x%02x, current "
2198                     "port state= %s.\n", fcport->d_id.b.domain,
2199                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
2200                     port_state_str[atomic_read(&fcport->state)]);
2201
2202                 if (atomic_read(&fcport->state) == FCS_ONLINE)
2203                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2204                 break;
2205
2206         case CS_ABORTED:
2207                 res = DID_RESET << 16;
2208                 break;
2209
2210         case CS_DIF_ERROR:
2211                 logit = qla2x00_handle_dif_error(sp, sts24);
2212                 res = cp->result;
2213                 break;
2214
2215         case CS_TRANSPORT:
2216                 res = DID_ERROR << 16;
2217
2218                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2219                         break;
2220
2221                 if (state_flags & BIT_4)
2222                         scmd_printk(KERN_WARNING, cp,
2223                             "Unsupported device '%s' found.\n",
2224                             cp->device->vendor);
2225                 break;
2226
2227         default:
2228                 res = DID_ERROR << 16;
2229                 break;
2230         }
2231
2232 out:
2233         if (logit)
2234                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2235                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%d "
2236                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2237                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x.\n",
2238                     comp_status, scsi_status, res, vha->host_no,
2239                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2240                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2241                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2242                     resid_len, fw_resid_len);
2243
2244         if (!res)
2245                 qla2x00_do_host_ramp_up(vha);
2246
2247         if (rsp->status_srb == NULL)
2248                 sp->done(ha, sp, res);
2249 }
2250
2251 /**
2252  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2253  * @ha: SCSI driver HA context
2254  * @pkt: Entry pointer
2255  *
2256  * Extended sense data.
2257  */
2258 static void
2259 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2260 {
2261         uint8_t sense_sz = 0;
2262         struct qla_hw_data *ha = rsp->hw;
2263         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2264         srb_t *sp = rsp->status_srb;
2265         struct scsi_cmnd *cp;
2266         uint32_t sense_len;
2267         uint8_t *sense_ptr;
2268
2269         if (!sp || !GET_CMD_SENSE_LEN(sp))
2270                 return;
2271
2272         sense_len = GET_CMD_SENSE_LEN(sp);
2273         sense_ptr = GET_CMD_SENSE_PTR(sp);
2274
2275         cp = GET_CMD_SP(sp);
2276         if (cp == NULL) {
2277                 ql_log(ql_log_warn, vha, 0x3025,
2278                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2279
2280                 rsp->status_srb = NULL;
2281                 return;
2282         }
2283
2284         if (sense_len > sizeof(pkt->data))
2285                 sense_sz = sizeof(pkt->data);
2286         else
2287                 sense_sz = sense_len;
2288
2289         /* Move sense data. */
2290         if (IS_FWI2_CAPABLE(ha))
2291                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2292         memcpy(sense_ptr, pkt->data, sense_sz);
2293         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2294                 sense_ptr, sense_sz);
2295
2296         sense_len -= sense_sz;
2297         sense_ptr += sense_sz;
2298
2299         SET_CMD_SENSE_PTR(sp, sense_ptr);
2300         SET_CMD_SENSE_LEN(sp, sense_len);
2301
2302         /* Place command on done queue. */
2303         if (sense_len == 0) {
2304                 rsp->status_srb = NULL;
2305                 sp->done(ha, sp, cp->result);
2306         }
2307 }
2308
2309 /**
2310  * qla2x00_error_entry() - Process an error entry.
2311  * @ha: SCSI driver HA context
2312  * @pkt: Entry pointer
2313  */
2314 static void
2315 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2316 {
2317         srb_t *sp;
2318         struct qla_hw_data *ha = vha->hw;
2319         const char func[] = "ERROR-IOCB";
2320         uint16_t que = MSW(pkt->handle);
2321         struct req_que *req = NULL;
2322         int res = DID_ERROR << 16;
2323
2324         ql_dbg(ql_dbg_async, vha, 0x502a,
2325             "type of error status in response: 0x%x\n", pkt->entry_status);
2326
2327         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2328                 goto fatal;
2329
2330         req = ha->req_q_map[que];
2331
2332         if (pkt->entry_status & RF_BUSY)
2333                 res = DID_BUS_BUSY << 16;
2334
2335         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2336         if (sp) {
2337                 sp->done(ha, sp, res);
2338                 return;
2339         }
2340 fatal:
2341         ql_log(ql_log_warn, vha, 0x5030,
2342             "Error entry - invalid handle/queue.\n");
2343
2344         if (IS_P3P_TYPE(ha))
2345                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2346         else
2347                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2348         qla2xxx_wake_dpc(vha);
2349 }
2350
2351 /**
2352  * qla24xx_mbx_completion() - Process mailbox command completions.
2353  * @ha: SCSI driver HA context
2354  * @mb0: Mailbox0 register
2355  */
2356 static void
2357 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2358 {
2359         uint16_t        cnt;
2360         uint32_t        mboxes;
2361         uint16_t __iomem *wptr;
2362         struct qla_hw_data *ha = vha->hw;
2363         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2364
2365         /* Read all mbox registers? */
2366         mboxes = (1 << ha->mbx_count) - 1;
2367         if (!ha->mcp)
2368                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2369         else
2370                 mboxes = ha->mcp->in_mb;
2371
2372         /* Load return mailbox registers. */
2373         ha->flags.mbox_int = 1;
2374         ha->mailbox_out[0] = mb0;
2375         mboxes >>= 1;
2376         wptr = (uint16_t __iomem *)&reg->mailbox1;
2377
2378         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2379                 if (mboxes & BIT_0)
2380                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2381
2382                 mboxes >>= 1;
2383                 wptr++;
2384         }
2385 }
2386
2387 /**
2388  * qla24xx_process_response_queue() - Process response queue entries.
2389  * @ha: SCSI driver HA context
2390  */
2391 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2392         struct rsp_que *rsp)
2393 {
2394         struct sts_entry_24xx *pkt;
2395         struct qla_hw_data *ha = vha->hw;
2396
2397         if (!vha->flags.online)
2398                 return;
2399
2400         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2401                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
2402
2403                 rsp->ring_index++;
2404                 if (rsp->ring_index == rsp->length) {
2405                         rsp->ring_index = 0;
2406                         rsp->ring_ptr = rsp->ring;
2407                 } else {
2408                         rsp->ring_ptr++;
2409                 }
2410
2411                 if (pkt->entry_status != 0) {
2412                         qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
2413
2414                         (void)qlt_24xx_process_response_error(vha, pkt);
2415
2416                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2417                         wmb();
2418                         continue;
2419                 }
2420
2421                 switch (pkt->entry_type) {
2422                 case STATUS_TYPE:
2423                         qla2x00_status_entry(vha, rsp, pkt);
2424                         break;
2425                 case STATUS_CONT_TYPE:
2426                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2427                         break;
2428                 case VP_RPT_ID_IOCB_TYPE:
2429                         qla24xx_report_id_acquisition(vha,
2430                             (struct vp_rpt_id_entry_24xx *)pkt);
2431                         break;
2432                 case LOGINOUT_PORT_IOCB_TYPE:
2433                         qla24xx_logio_entry(vha, rsp->req,
2434                             (struct logio_entry_24xx *)pkt);
2435                         break;
2436                 case TSK_MGMT_IOCB_TYPE:
2437                         qla24xx_tm_iocb_entry(vha, rsp->req,
2438                             (struct tsk_mgmt_entry *)pkt);
2439                         break;
2440                 case CT_IOCB_TYPE:
2441                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2442                         break;
2443                 case ELS_IOCB_TYPE:
2444                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2445                         break;
2446                 case ABTS_RECV_24XX:
2447                         /* ensure that the ATIO queue is empty */
2448                         qlt_24xx_process_atio_queue(vha);
2449                 case ABTS_RESP_24XX:
2450                 case CTIO_TYPE7:
2451                 case NOTIFY_ACK_TYPE:
2452                         qlt_response_pkt_all_vps(vha, (response_t *)pkt);
2453                         break;
2454                 case MARKER_TYPE:
2455                         /* Do nothing in this case, this check is to prevent it
2456                          * from falling into default case
2457                          */
2458                         break;
2459                 default:
2460                         /* Type Not Supported. */
2461                         ql_dbg(ql_dbg_async, vha, 0x5042,
2462                             "Received unknown response pkt type %x "
2463                             "entry status=%x.\n",
2464                             pkt->entry_type, pkt->entry_status);
2465                         break;
2466                 }
2467                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2468                 wmb();
2469         }
2470
2471         /* Adjust ring index */
2472         if (IS_P3P_TYPE(ha)) {
2473                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2474                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2475         } else
2476                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2477 }
2478
2479 static void
2480 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2481 {
2482         int rval;
2483         uint32_t cnt;
2484         struct qla_hw_data *ha = vha->hw;
2485         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2486
2487         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha))
2488                 return;
2489
2490         rval = QLA_SUCCESS;
2491         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2492         RD_REG_DWORD(&reg->iobase_addr);
2493         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2494         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2495             rval == QLA_SUCCESS; cnt--) {
2496                 if (cnt) {
2497                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2498                         udelay(10);
2499                 } else
2500                         rval = QLA_FUNCTION_TIMEOUT;
2501         }
2502         if (rval == QLA_SUCCESS)
2503                 goto next_test;
2504
2505         rval = QLA_SUCCESS;
2506         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2507         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2508             rval == QLA_SUCCESS; cnt--) {
2509                 if (cnt) {
2510                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2511                         udelay(10);
2512                 } else
2513                         rval = QLA_FUNCTION_TIMEOUT;
2514         }
2515         if (rval != QLA_SUCCESS)
2516                 goto done;
2517
2518 next_test:
2519         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2520                 ql_log(ql_log_info, vha, 0x504c,
2521                     "Additional code -- 0x55AA.\n");
2522
2523 done:
2524         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2525         RD_REG_DWORD(&reg->iobase_window);
2526 }
2527
2528 /**
2529  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
2530  * @irq:
2531  * @dev_id: SCSI driver HA context
2532  *
2533  * Called by system whenever the host adapter generates an interrupt.
2534  *
2535  * Returns handled flag.
2536  */
2537 irqreturn_t
2538 qla24xx_intr_handler(int irq, void *dev_id)
2539 {
2540         scsi_qla_host_t *vha;
2541         struct qla_hw_data *ha;
2542         struct device_reg_24xx __iomem *reg;
2543         int             status;
2544         unsigned long   iter;
2545         uint32_t        stat;
2546         uint32_t        hccr;
2547         uint16_t        mb[8];
2548         struct rsp_que *rsp;
2549         unsigned long   flags;
2550
2551         rsp = (struct rsp_que *) dev_id;
2552         if (!rsp) {
2553                 ql_log(ql_log_info, NULL, 0x5059,
2554                     "%s: NULL response queue pointer.\n", __func__);
2555                 return IRQ_NONE;
2556         }
2557
2558         ha = rsp->hw;
2559         reg = &ha->iobase->isp24;
2560         status = 0;
2561
2562         if (unlikely(pci_channel_offline(ha->pdev)))
2563                 return IRQ_HANDLED;
2564
2565         spin_lock_irqsave(&ha->hardware_lock, flags);
2566         vha = pci_get_drvdata(ha->pdev);
2567         for (iter = 50; iter--; ) {
2568                 stat = RD_REG_DWORD(&reg->host_status);
2569                 if (stat & HSRX_RISC_PAUSED) {
2570                         if (unlikely(pci_channel_offline(ha->pdev)))
2571                                 break;
2572
2573                         hccr = RD_REG_DWORD(&reg->hccr);
2574
2575                         ql_log(ql_log_warn, vha, 0x504b,
2576                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2577                             hccr);
2578
2579                         qla2xxx_check_risc_status(vha);
2580
2581                         ha->isp_ops->fw_dump(vha, 1);
2582                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2583                         break;
2584                 } else if ((stat & HSRX_RISC_INT) == 0)
2585                         break;
2586
2587                 switch (stat & 0xff) {
2588                 case INTR_ROM_MB_SUCCESS:
2589                 case INTR_ROM_MB_FAILED:
2590                 case INTR_MB_SUCCESS:
2591                 case INTR_MB_FAILED:
2592                         qla24xx_mbx_completion(vha, MSW(stat));
2593                         status |= MBX_INTERRUPT;
2594
2595                         break;
2596                 case INTR_ASYNC_EVENT:
2597                         mb[0] = MSW(stat);
2598                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2599                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2600                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2601                         qla2x00_async_event(vha, rsp, mb);
2602                         break;
2603                 case INTR_RSP_QUE_UPDATE:
2604                 case INTR_RSP_QUE_UPDATE_83XX:
2605                         qla24xx_process_response_queue(vha, rsp);
2606                         break;
2607                 case INTR_ATIO_QUE_UPDATE:
2608                         qlt_24xx_process_atio_queue(vha);
2609                         break;
2610                 case INTR_ATIO_RSP_QUE_UPDATE:
2611                         qlt_24xx_process_atio_queue(vha);
2612                         qla24xx_process_response_queue(vha, rsp);
2613                         break;
2614                 default:
2615                         ql_dbg(ql_dbg_async, vha, 0x504f,
2616                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
2617                         break;
2618                 }
2619                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2620                 RD_REG_DWORD_RELAXED(&reg->hccr);
2621                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
2622                         ndelay(3500);
2623         }
2624         qla2x00_handle_mbx_completion(ha, status);
2625         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2626
2627         return IRQ_HANDLED;
2628 }
2629
2630 static irqreturn_t
2631 qla24xx_msix_rsp_q(int irq, void *dev_id)
2632 {
2633         struct qla_hw_data *ha;
2634         struct rsp_que *rsp;
2635         struct device_reg_24xx __iomem *reg;
2636         struct scsi_qla_host *vha;
2637         unsigned long flags;
2638
2639         rsp = (struct rsp_que *) dev_id;
2640         if (!rsp) {
2641                 ql_log(ql_log_info, NULL, 0x505a,
2642                     "%s: NULL response queue pointer.\n", __func__);
2643                 return IRQ_NONE;
2644         }
2645         ha = rsp->hw;
2646         reg = &ha->iobase->isp24;
2647
2648         spin_lock_irqsave(&ha->hardware_lock, flags);
2649
2650         vha = pci_get_drvdata(ha->pdev);
2651         qla24xx_process_response_queue(vha, rsp);
2652         if (!ha->flags.disable_msix_handshake) {
2653                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2654                 RD_REG_DWORD_RELAXED(&reg->hccr);
2655         }
2656         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2657
2658         return IRQ_HANDLED;
2659 }
2660
2661 static irqreturn_t
2662 qla25xx_msix_rsp_q(int irq, void *dev_id)
2663 {
2664         struct qla_hw_data *ha;
2665         struct rsp_que *rsp;
2666         struct device_reg_24xx __iomem *reg;
2667         unsigned long flags;
2668
2669         rsp = (struct rsp_que *) dev_id;
2670         if (!rsp) {
2671                 ql_log(ql_log_info, NULL, 0x505b,
2672                     "%s: NULL response queue pointer.\n", __func__);
2673                 return IRQ_NONE;
2674         }
2675         ha = rsp->hw;
2676
2677         /* Clear the interrupt, if enabled, for this response queue */
2678         if (!ha->flags.disable_msix_handshake) {
2679                 reg = &ha->iobase->isp24;
2680                 spin_lock_irqsave(&ha->hardware_lock, flags);
2681                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2682                 RD_REG_DWORD_RELAXED(&reg->hccr);
2683                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2684         }
2685         queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2686
2687         return IRQ_HANDLED;
2688 }
2689
2690 static irqreturn_t
2691 qla24xx_msix_default(int irq, void *dev_id)
2692 {
2693         scsi_qla_host_t *vha;
2694         struct qla_hw_data *ha;
2695         struct rsp_que *rsp;
2696         struct device_reg_24xx __iomem *reg;
2697         int             status;
2698         uint32_t        stat;
2699         uint32_t        hccr;
2700         uint16_t        mb[8];
2701         unsigned long flags;
2702
2703         rsp = (struct rsp_que *) dev_id;
2704         if (!rsp) {
2705                 ql_log(ql_log_info, NULL, 0x505c,
2706                     "%s: NULL response queue pointer.\n", __func__);
2707                 return IRQ_NONE;
2708         }
2709         ha = rsp->hw;
2710         reg = &ha->iobase->isp24;
2711         status = 0;
2712
2713         spin_lock_irqsave(&ha->hardware_lock, flags);
2714         vha = pci_get_drvdata(ha->pdev);
2715         do {
2716                 stat = RD_REG_DWORD(&reg->host_status);
2717                 if (stat & HSRX_RISC_PAUSED) {
2718                         if (unlikely(pci_channel_offline(ha->pdev)))
2719                                 break;
2720
2721                         hccr = RD_REG_DWORD(&reg->hccr);
2722
2723                         ql_log(ql_log_info, vha, 0x5050,
2724                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
2725                             hccr);
2726
2727                         qla2xxx_check_risc_status(vha);
2728
2729                         ha->isp_ops->fw_dump(vha, 1);
2730                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2731                         break;
2732                 } else if ((stat & HSRX_RISC_INT) == 0)
2733                         break;
2734
2735                 switch (stat & 0xff) {
2736                 case INTR_ROM_MB_SUCCESS:
2737                 case INTR_ROM_MB_FAILED:
2738                 case INTR_MB_SUCCESS:
2739                 case INTR_MB_FAILED:
2740                         qla24xx_mbx_completion(vha, MSW(stat));
2741                         status |= MBX_INTERRUPT;
2742
2743                         break;
2744                 case INTR_ASYNC_EVENT:
2745                         mb[0] = MSW(stat);
2746                         mb[1] = RD_REG_WORD(&reg->mailbox1);
2747                         mb[2] = RD_REG_WORD(&reg->mailbox2);
2748                         mb[3] = RD_REG_WORD(&reg->mailbox3);
2749                         qla2x00_async_event(vha, rsp, mb);
2750                         break;
2751                 case INTR_RSP_QUE_UPDATE:
2752                 case INTR_RSP_QUE_UPDATE_83XX:
2753                         qla24xx_process_response_queue(vha, rsp);
2754                         break;
2755                 case INTR_ATIO_QUE_UPDATE:
2756                         qlt_24xx_process_atio_queue(vha);
2757                         break;
2758                 case INTR_ATIO_RSP_QUE_UPDATE:
2759                         qlt_24xx_process_atio_queue(vha);
2760                         qla24xx_process_response_queue(vha, rsp);
2761                         break;
2762                 default:
2763                         ql_dbg(ql_dbg_async, vha, 0x5051,
2764                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
2765                         break;
2766                 }
2767                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2768         } while (0);
2769         qla2x00_handle_mbx_completion(ha, status);
2770         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2771
2772         return IRQ_HANDLED;
2773 }
2774
2775 /* Interrupt handling helpers. */
2776
2777 struct qla_init_msix_entry {
2778         const char *name;
2779         irq_handler_t handler;
2780 };
2781
2782 static struct qla_init_msix_entry msix_entries[3] = {
2783         { "qla2xxx (default)", qla24xx_msix_default },
2784         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2785         { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2786 };
2787
2788 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2789         { "qla2xxx (default)", qla82xx_msix_default },
2790         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2791 };
2792
2793 static struct qla_init_msix_entry qla83xx_msix_entries[3] = {
2794         { "qla2xxx (default)", qla24xx_msix_default },
2795         { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2796         { "qla2xxx (atio_q)", qla83xx_msix_atio_q },
2797 };
2798
2799 static void
2800 qla24xx_disable_msix(struct qla_hw_data *ha)
2801 {
2802         int i;
2803         struct qla_msix_entry *qentry;
2804         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2805
2806         for (i = 0; i < ha->msix_count; i++) {
2807                 qentry = &ha->msix_entries[i];
2808                 if (qentry->have_irq)
2809                         free_irq(qentry->vector, qentry->rsp);
2810         }
2811         pci_disable_msix(ha->pdev);
2812         kfree(ha->msix_entries);
2813         ha->msix_entries = NULL;
2814         ha->flags.msix_enabled = 0;
2815         ql_dbg(ql_dbg_init, vha, 0x0042,
2816             "Disabled the MSI.\n");
2817 }
2818
2819 static int
2820 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2821 {
2822 #define MIN_MSIX_COUNT  2
2823         int i, ret;
2824         struct msix_entry *entries;
2825         struct qla_msix_entry *qentry;
2826         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2827
2828         entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2829                         GFP_KERNEL);
2830         if (!entries) {
2831                 ql_log(ql_log_warn, vha, 0x00bc,
2832                     "Failed to allocate memory for msix_entry.\n");
2833                 return -ENOMEM;
2834         }
2835
2836         for (i = 0; i < ha->msix_count; i++)
2837                 entries[i].entry = i;
2838
2839         ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2840         if (ret) {
2841                 if (ret < MIN_MSIX_COUNT)
2842                         goto msix_failed;
2843
2844                 ql_log(ql_log_warn, vha, 0x00c6,
2845                     "MSI-X: Failed to enable support "
2846                     "-- %d/%d\n Retry with %d vectors.\n",
2847                     ha->msix_count, ret, ret);
2848                 ha->msix_count = ret;
2849                 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2850                 if (ret) {
2851 msix_failed:
2852                         ql_log(ql_log_fatal, vha, 0x00c7,
2853                             "MSI-X: Failed to enable support, "
2854                             "giving   up -- %d/%d.\n",
2855                             ha->msix_count, ret);
2856                         goto msix_out;
2857                 }
2858                 ha->max_rsp_queues = ha->msix_count - 1;
2859         }
2860         ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2861                                 ha->msix_count, GFP_KERNEL);
2862         if (!ha->msix_entries) {
2863                 ql_log(ql_log_fatal, vha, 0x00c8,
2864                     "Failed to allocate memory for ha->msix_entries.\n");
2865                 ret = -ENOMEM;
2866                 goto msix_out;
2867         }
2868         ha->flags.msix_enabled = 1;
2869
2870         for (i = 0; i < ha->msix_count; i++) {
2871                 qentry = &ha->msix_entries[i];
2872                 qentry->vector = entries[i].vector;
2873                 qentry->entry = entries[i].entry;
2874                 qentry->have_irq = 0;
2875                 qentry->rsp = NULL;
2876         }
2877
2878         /* Enable MSI-X vectors for the base queue */
2879         for (i = 0; i < ha->msix_count; i++) {
2880                 qentry = &ha->msix_entries[i];
2881                 if (QLA_TGT_MODE_ENABLED() && IS_ATIO_MSIX_CAPABLE(ha)) {
2882                         ret = request_irq(qentry->vector,
2883                                 qla83xx_msix_entries[i].handler,
2884                                 0, qla83xx_msix_entries[i].name, rsp);
2885                 } else if (IS_P3P_TYPE(ha)) {
2886                         ret = request_irq(qentry->vector,
2887                                 qla82xx_msix_entries[i].handler,
2888                                 0, qla82xx_msix_entries[i].name, rsp);
2889                 } else {
2890                         ret = request_irq(qentry->vector,
2891                                 msix_entries[i].handler,
2892                                 0, msix_entries[i].name, rsp);
2893                 }
2894                 if (ret) {
2895                         ql_log(ql_log_fatal, vha, 0x00cb,
2896                             "MSI-X: unable to register handler -- %x/%d.\n",
2897                             qentry->vector, ret);
2898                         qla24xx_disable_msix(ha);
2899                         ha->mqenable = 0;
2900                         goto msix_out;
2901                 }
2902                 qentry->have_irq = 1;
2903                 qentry->rsp = rsp;
2904                 rsp->msix = qentry;
2905         }
2906
2907         /* Enable MSI-X vector for response queue update for queue 0 */
2908         if (IS_QLA83XX(ha)) {
2909                 if (ha->msixbase && ha->mqiobase &&
2910                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2911                         ha->mqenable = 1;
2912         } else
2913                 if (ha->mqiobase
2914                     && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2915                         ha->mqenable = 1;
2916         ql_dbg(ql_dbg_multiq, vha, 0xc005,
2917             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
2918             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
2919         ql_dbg(ql_dbg_init, vha, 0x0055,
2920             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
2921             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
2922
2923 msix_out:
2924         kfree(entries);
2925         return ret;
2926 }
2927
2928 int
2929 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2930 {
2931         int ret;
2932         device_reg_t __iomem *reg = ha->iobase;
2933         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
2934
2935         /* If possible, enable MSI-X. */
2936         if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2937                 !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) && !IS_QLAFX00(ha))
2938                 goto skip_msi;
2939
2940         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2941                 (ha->pdev->subsystem_device == 0x7040 ||
2942                 ha->pdev->subsystem_device == 0x7041 ||
2943                 ha->pdev->subsystem_device == 0x1705)) {
2944                 ql_log(ql_log_warn, vha, 0x0034,
2945                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
2946                         ha->pdev->subsystem_vendor,
2947                         ha->pdev->subsystem_device);
2948                 goto skip_msi;
2949         }
2950
2951         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
2952                 ql_log(ql_log_warn, vha, 0x0035,
2953                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
2954                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
2955                 goto skip_msix;
2956         }
2957
2958         ret = qla24xx_enable_msix(ha, rsp);
2959         if (!ret) {
2960                 ql_dbg(ql_dbg_init, vha, 0x0036,
2961                     "MSI-X: Enabled (0x%X, 0x%X).\n",
2962                     ha->chip_revision, ha->fw_attributes);
2963                 goto clear_risc_ints;
2964         }
2965         ql_log(ql_log_info, vha, 0x0037,
2966             "MSI-X Falling back-to MSI mode -%d.\n", ret);
2967 skip_msix:
2968
2969         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2970             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha))
2971                 goto skip_msi;
2972
2973         ret = pci_enable_msi(ha->pdev);
2974         if (!ret) {
2975                 ql_dbg(ql_dbg_init, vha, 0x0038,
2976                     "MSI: Enabled.\n");
2977                 ha->flags.msi_enabled = 1;
2978         } else
2979                 ql_log(ql_log_warn, vha, 0x0039,
2980                     "MSI-X; Falling back-to INTa mode -- %d.\n", ret);
2981
2982         /* Skip INTx on ISP82xx. */
2983         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
2984                 return QLA_FUNCTION_FAILED;
2985
2986 skip_msi:
2987
2988         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2989             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
2990             QLA2XXX_DRIVER_NAME, rsp);
2991         if (ret) {
2992                 ql_log(ql_log_warn, vha, 0x003a,
2993                     "Failed to reserve interrupt %d already in use.\n",
2994                     ha->pdev->irq);
2995                 goto fail;
2996         } else if (!ha->flags.msi_enabled) {
2997                 ql_dbg(ql_dbg_init, vha, 0x0125,
2998                     "INTa mode: Enabled.\n");
2999                 ha->flags.mr_intr_valid = 1;
3000         }
3001
3002 clear_risc_ints:
3003
3004         spin_lock_irq(&ha->hardware_lock);
3005         if (!IS_FWI2_CAPABLE(ha))
3006                 WRT_REG_WORD(&reg->isp.semaphore, 0);
3007         spin_unlock_irq(&ha->hardware_lock);
3008
3009 fail:
3010         return ret;
3011 }
3012
3013 void
3014 qla2x00_free_irqs(scsi_qla_host_t *vha)
3015 {
3016         struct qla_hw_data *ha = vha->hw;
3017         struct rsp_que *rsp;
3018
3019         /*
3020          * We need to check that ha->rsp_q_map is valid in case we are called
3021          * from a probe failure context.
3022          */
3023         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3024                 return;
3025         rsp = ha->rsp_q_map[0];
3026
3027         if (ha->flags.msix_enabled)
3028                 qla24xx_disable_msix(ha);
3029         else if (ha->flags.msi_enabled) {
3030                 free_irq(ha->pdev->irq, rsp);
3031                 pci_disable_msi(ha->pdev);
3032         } else
3033                 free_irq(ha->pdev->irq, rsp);
3034 }
3035
3036
3037 int qla25xx_request_irq(struct rsp_que *rsp)
3038 {
3039         struct qla_hw_data *ha = rsp->hw;
3040         struct qla_init_msix_entry *intr = &msix_entries[2];
3041         struct qla_msix_entry *msix = rsp->msix;
3042         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3043         int ret;
3044
3045         ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
3046         if (ret) {
3047                 ql_log(ql_log_fatal, vha, 0x00e6,
3048                     "MSI-X: Unable to register handler -- %x/%d.\n",
3049                     msix->vector, ret);
3050                 return ret;
3051         }
3052         msix->have_irq = 1;
3053         msix->rsp = rsp;
3054         return ret;
3055 }