drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_target.h"
   9
  10 #include <linux/delay.h>
  11 #include <linux/slab.h>
  12 #include <linux/cpu.h>
  13 #include <linux/t10-pi.h>
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsi_bsg_fc.h>
  16 #include <scsi/scsi_eh.h>
  17 #include <scsi/fc/fc_fs.h>
  18 #include <linux/nvme-fc-driver.h>
  19
  20 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  21 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  22 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  23 static int qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  24         sts_entry_t *);
  25
  26 const char *const port_state_str[] = {
  27         "Unknown",
  28         "UNCONFIGURED",
  29         "DEAD",
  30         "LOST",
  31         "ONLINE"
  32 };
  33
  34 /**
  35  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  36  * @irq: interrupt number
  37  * @dev_id: SCSI driver HA context
  38  *
  39  * Called by system whenever the host adapter generates an interrupt.
  40  *
  41  * Returns handled flag.
  42  */
  43 irqreturn_t
  44 qla2100_intr_handler(int irq, void *dev_id)
  45 {
  46         scsi_qla_host_t *vha;
  47         struct qla_hw_data *ha;
  48         struct device_reg_2xxx __iomem *reg;
  49         int             status;
  50         unsigned long   iter;
  51         uint16_t        hccr;
  52         uint16_t        mb[8];
  53         struct rsp_que *rsp;
  54         unsigned long   flags;
  55
  56         rsp = (struct rsp_que *) dev_id;
  57         if (!rsp) {
  58                 ql_log(ql_log_info, NULL, 0x505d,
  59                     "%s: NULL response queue pointer.\n", __func__);
  60                 return (IRQ_NONE);
  61         }
  62
  63         ha = rsp->hw;
  64         reg = &ha->iobase->isp;
  65         status = 0;
  66
  67         spin_lock_irqsave(&ha->hardware_lock, flags);
  68         vha = pci_get_drvdata(ha->pdev);
  69         for (iter = 50; iter--; ) {
  70                 hccr = RD_REG_WORD(&reg->hccr);
  71                 if (qla2x00_check_reg16_for_disconnect(vha, hccr))
  72                         break;
  73                 if (hccr & HCCR_RISC_PAUSE) {
  74                         if (pci_channel_offline(ha->pdev))
  75                                 break;
  76
  77                         /*
  78                          * Issue a "HARD" reset in order for the RISC interrupt
  79                          * bit to be cleared.  Schedule a big hammer to get
  80                          * out of the RISC PAUSED state.
  81                          */
  82                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  83                         RD_REG_WORD(&reg->hccr);
  84
  85                         ha->isp_ops->fw_dump(vha, 1);
  86                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  87                         break;
  88                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  89                         break;
  90
  91                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  92                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  93                         RD_REG_WORD(&reg->hccr);
  94
  95                         /* Get mailbox data. */
  96                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  97                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  98                                 qla2x00_mbx_completion(vha, mb[0]);
  99                                 status |= MBX_INTERRUPT;
 100                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
 101                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 102                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 103                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 104                                 qla2x00_async_event(vha, rsp, mb);
 105                         } else {
 106                                 /*EMPTY*/
 107                                 ql_dbg(ql_dbg_async, vha, 0x5025,
 108                                     "Unrecognized interrupt type (%d).\n",
 109                                     mb[0]);
 110                         }
 111                         /* Release mailbox registers. */
 112                         WRT_REG_WORD(&reg->semaphore, 0);
 113                         RD_REG_WORD(&reg->semaphore);
 114                 } else {
 115                         qla2x00_process_response_queue(rsp);
 116
 117                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 118                         RD_REG_WORD(&reg->hccr);
 119                 }
 120         }
 121         qla2x00_handle_mbx_completion(ha, status);
 122         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 123
 124         return (IRQ_HANDLED);
 125 }
 126
 127 bool
 128 qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
 129 {
 130         /* Check for PCI disconnection */
 131         if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
 132                 if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
 133                     !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
 134                     !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
 135                         /*
 136                          * Schedule this (only once) on the default system
 137                          * workqueue so that all the adapter workqueues and the
 138                          * DPC thread can be shutdown cleanly.
 139                          */
 140                         schedule_work(&vha->hw->board_disable);
 141                 }
 142                 return true;
 143         } else
 144                 return false;
 145 }
 146
 147 bool
 148 qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
 149 {
 150         return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
 151 }
 152
 153 /**
 154  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 155  * @irq: interrupt number
 156  * @dev_id: SCSI driver HA context
 157  *
 158  * Called by system whenever the host adapter generates an interrupt.
 159  *
 160  * Returns handled flag.
 161  */
 162 irqreturn_t
 163 qla2300_intr_handler(int irq, void *dev_id)
 164 {
 165         scsi_qla_host_t *vha;
 166         struct device_reg_2xxx __iomem *reg;
 167         int             status;
 168         unsigned long   iter;
 169         uint32_t        stat;
 170         uint16_t        hccr;
 171         uint16_t        mb[8];
 172         struct rsp_que *rsp;
 173         struct qla_hw_data *ha;
 174         unsigned long   flags;
 175
 176         rsp = (struct rsp_que *) dev_id;
 177         if (!rsp) {
 178                 ql_log(ql_log_info, NULL, 0x5058,
 179                     "%s: NULL response queue pointer.\n", __func__);
 180                 return (IRQ_NONE);
 181         }
 182
 183         ha = rsp->hw;
 184         reg = &ha->iobase->isp;
 185         status = 0;
 186
 187         spin_lock_irqsave(&ha->hardware_lock, flags);
 188         vha = pci_get_drvdata(ha->pdev);
 189         for (iter = 50; iter--; ) {
 190                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 191                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
 192                         break;
 193                 if (stat & HSR_RISC_PAUSED) {
 194                         if (unlikely(pci_channel_offline(ha->pdev)))
 195                                 break;
 196
 197                         hccr = RD_REG_WORD(&reg->hccr);
 198
 199                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 200                                 ql_log(ql_log_warn, vha, 0x5026,
 201                                     "Parity error -- HCCR=%x, Dumping "
 202                                     "firmware.\n", hccr);
 203                         else
 204                                 ql_log(ql_log_warn, vha, 0x5027,
 205                                     "RISC paused -- HCCR=%x, Dumping "
 206                                     "firmware.\n", hccr);
 207
 208                         /*
 209                          * Issue a "HARD" reset in order for the RISC
 210                          * interrupt bit to be cleared.  Schedule a big
 211                          * hammer to get out of the RISC PAUSED state.
 212                          */
 213                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 214                         RD_REG_WORD(&reg->hccr);
 215
 216                         ha->isp_ops->fw_dump(vha, 1);
 217                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 218                         break;
 219                 } else if ((stat & HSR_RISC_INT) == 0)
 220                         break;
 221
 222                 switch (stat & 0xff) {
 223                 case 0x1:
 224                 case 0x2:
 225                 case 0x10:
 226                 case 0x11:
 227                         qla2x00_mbx_completion(vha, MSW(stat));
 228                         status |= MBX_INTERRUPT;
 229
 230                         /* Release mailbox registers. */
 231                         WRT_REG_WORD(&reg->semaphore, 0);
 232                         break;
 233                 case 0x12:
 234                         mb[0] = MSW(stat);
 235                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 236                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 237                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 238                         qla2x00_async_event(vha, rsp, mb);
 239                         break;
 240                 case 0x13:
 241                         qla2x00_process_response_queue(rsp);
 242                         break;
 243                 case 0x15:
 244                         mb[0] = MBA_CMPLT_1_16BIT;
 245                         mb[1] = MSW(stat);
 246                         qla2x00_async_event(vha, rsp, mb);
 247                         break;
 248                 case 0x16:
 249                         mb[0] = MBA_SCSI_COMPLETION;
 250                         mb[1] = MSW(stat);
 251                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 252                         qla2x00_async_event(vha, rsp, mb);
 253                         break;
 254                 default:
 255                         ql_dbg(ql_dbg_async, vha, 0x5028,
 256                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 257                         break;
 258                 }
 259                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 260                 RD_REG_WORD_RELAXED(&reg->hccr);
 261         }
 262         qla2x00_handle_mbx_completion(ha, status);
 263         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 264
 265         return (IRQ_HANDLED);
 266 }
 267
 268 /**
 269  * qla2x00_mbx_completion() - Process mailbox command completions.
 270  * @vha: SCSI driver HA context
 271  * @mb0: Mailbox0 register
 272  */
 273 static void
 274 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 275 {
 276         uint16_t        cnt;
 277         uint32_t        mboxes;
 278         uint16_t __iomem *wptr;
 279         struct qla_hw_data *ha = vha->hw;
 280         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 281
 282         /* Read all mbox registers? */
 283         WARN_ON_ONCE(ha->mbx_count > 32);
 284         mboxes = (1ULL << ha->mbx_count) - 1;
 285         if (!ha->mcp)
 286                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
 287         else
 288                 mboxes = ha->mcp->in_mb;
 289
 290         /* Load return mailbox registers. */
 291         ha->flags.mbox_int = 1;
 292         ha->mailbox_out[0] = mb0;
 293         mboxes >>= 1;
 294         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 295
 296         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 297                 if (IS_QLA2200(ha) && cnt == 8)
 298                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 299                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 300                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 301                 else if (mboxes & BIT_0)
 302                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 303
 304                 wptr++;
 305                 mboxes >>= 1;
 306         }
 307 }
 308
 309 static void
 310 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 311 {
 312         static char *event[] =
 313                 { "Complete", "Request Notification", "Time Extension" };
 314         int rval;
 315         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 316         struct device_reg_82xx __iomem *reg82 = &vha->hw->iobase->isp82;
 317         uint16_t __iomem *wptr;
 318         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 319
 320         /* Seed data -- mailbox1 -> mailbox7. */
 321         if (IS_QLA81XX(vha->hw) || IS_QLA83XX(vha->hw))
 322                 wptr = (uint16_t __iomem *)&reg24->mailbox1;
 323         else if (IS_QLA8044(vha->hw))
 324                 wptr = (uint16_t __iomem *)&reg82->mailbox_out[1];
 325         else
 326                 return;
 327
 328         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 329                 mb[cnt] = RD_REG_WORD(wptr);
 330
 331         ql_dbg(ql_dbg_async, vha, 0x5021,
 332             "Inter-Driver Communication %s -- "
 333             "%04x %04x %04x %04x %04x %04x %04x.\n",
 334             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 335             mb[4], mb[5], mb[6]);
 336         switch (aen) {
 337         /* Handle IDC Error completion case. */
 338         case MBA_IDC_COMPLETE:
 339                 if (mb[1] >> 15) {
 340                         vha->hw->flags.idc_compl_status = 1;
 341                         if (vha->hw->notify_dcbx_comp && !vha->vp_idx)
 342                                 complete(&vha->hw->dcbx_comp);
 343                 }
 344                 break;
 345
 346         case MBA_IDC_NOTIFY:
 347                 /* Acknowledgement needed? [Notify && non-zero timeout]. */
 348                 timeout = (descr >> 8) & 0xf;
 349                 ql_dbg(ql_dbg_async, vha, 0x5022,
 350                     "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 351                     vha->host_no, event[aen & 0xff], timeout);
 352
 353                 if (!timeout)
 354                         return;
 355                 rval = qla2x00_post_idc_ack_work(vha, mb);
 356                 if (rval != QLA_SUCCESS)
 357                         ql_log(ql_log_warn, vha, 0x5023,
 358                             "IDC failed to post ACK.\n");
 359                 break;
 360         case MBA_IDC_TIME_EXT:
 361                 vha->hw->idc_extend_tmo = descr;
 362                 ql_dbg(ql_dbg_async, vha, 0x5087,
 363                     "%lu Inter-Driver Communication %s -- "
 364                     "Extend timeout by=%d.\n",
 365                     vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
 366                 break;
 367         }
 368 }
 369
 370 #define LS_UNKNOWN      2
 371 const char *
 372 qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
 373 {
 374         static const char *const link_speeds[] = {
 375                 "1", "2", "?", "4", "8", "16", "32", "10"
 376         };
 377 #define QLA_LAST_SPEED (ARRAY_SIZE(link_speeds) - 1)
 378
 379         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 380                 return link_speeds[0];
 381         else if (speed == 0x13)
 382                 return link_speeds[QLA_LAST_SPEED];
 383         else if (speed < QLA_LAST_SPEED)
 384                 return link_speeds[speed];
 385         else
 386                 return link_speeds[LS_UNKNOWN];
 387 }
 388
 389 static void
 390 qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 391 {
 392         struct qla_hw_data *ha = vha->hw;
 393
 394         /*
 395          * 8200 AEN Interpretation:
 396          * mb[0] = AEN code
 397          * mb[1] = AEN Reason code
 398          * mb[2] = LSW of Peg-Halt Status-1 Register
 399          * mb[6] = MSW of Peg-Halt Status-1 Register
 400          * mb[3] = LSW of Peg-Halt Status-2 register
 401          * mb[7] = MSW of Peg-Halt Status-2 register
 402          * mb[4] = IDC Device-State Register value
 403          * mb[5] = IDC Driver-Presence Register value
 404          */
 405         ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
 406             "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
 407             mb[0], mb[1], mb[2], mb[6]);
 408         ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
 409             "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
 410             "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);
 411
 412         if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
 413                                 IDC_HEARTBEAT_FAILURE)) {
 414                 ha->flags.nic_core_hung = 1;
 415                 ql_log(ql_log_warn, vha, 0x5060,
 416                     "83XX: F/W Error Reported: Check if reset required.\n");
 417
 418                 if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
 419                         uint32_t protocol_engine_id, fw_err_code, err_level;
 420
 421                         /*
 422                          * IDC_PEG_HALT_STATUS_CHANGE interpretation:
 423                          *  - PEG-Halt Status-1 Register:
 424                          *      (LSW = mb[2], MSW = mb[6])
 425                          *      Bits 0-7   = protocol-engine ID
 426                          *      Bits 8-28  = f/w error code
 427                          *      Bits 29-31 = Error-level
 428                          *          Error-level 0x1 = Non-Fatal error
 429                          *          Error-level 0x2 = Recoverable Fatal error
 430                          *          Error-level 0x4 = UnRecoverable Fatal error
 431                          *  - PEG-Halt Status-2 Register:
 432                          *      (LSW = mb[3], MSW = mb[7])
 433                          */
 434                         protocol_engine_id = (mb[2] & 0xff);
 435                         fw_err_code = (((mb[2] & 0xff00) >> 8) |
 436                             ((mb[6] & 0x1fff) << 8));
 437                         err_level = ((mb[6] & 0xe000) >> 13);
 438                         ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
 439                             "Register: protocol_engine_id=0x%x "
 440                             "fw_err_code=0x%x err_level=0x%x.\n",
 441                             protocol_engine_id, fw_err_code, err_level);
 442                         ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
 443                             "Register: 0x%x%x.\n", mb[7], mb[3]);
 444                         if (err_level == ERR_LEVEL_NON_FATAL) {
 445                                 ql_log(ql_log_warn, vha, 0x5063,
 446                                     "Not a fatal error, f/w has recovered itself.\n");
 447                         } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
 448                                 ql_log(ql_log_fatal, vha, 0x5064,
 449                                     "Recoverable Fatal error: Chip reset "
 450                                     "required.\n");
 451                                 qla83xx_schedule_work(vha,
 452                                     QLA83XX_NIC_CORE_RESET);
 453                         } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
 454                                 ql_log(ql_log_fatal, vha, 0x5065,
 455                                     "Unrecoverable Fatal error: Set FAILED "
 456                                     "state, reboot required.\n");
 457                                 qla83xx_schedule_work(vha,
 458                                     QLA83XX_NIC_CORE_UNRECOVERABLE);
 459                         }
 460                 }
 461
 462                 if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
 463                         uint16_t peg_fw_state, nw_interface_link_up;
 464                         uint16_t nw_interface_signal_detect, sfp_status;
 465                         uint16_t htbt_counter, htbt_monitor_enable;
 466                         uint16_t sfp_additional_info, sfp_multirate;
 467                         uint16_t sfp_tx_fault, link_speed, dcbx_status;
 468
 469                         /*
 470                          * IDC_NIC_FW_REPORTED_FAILURE interpretation:
 471                          *  - PEG-to-FC Status Register:
 472                          *      (LSW = mb[2], MSW = mb[6])
 473                          *      Bits 0-7   = Peg-Firmware state
 474                          *      Bit 8      = N/W Interface Link-up
 475                          *      Bit 9      = N/W Interface signal detected
 476                          *      Bits 10-11 = SFP Status
 477                          *        SFP Status 0x0 = SFP+ transceiver not expected
 478                          *        SFP Status 0x1 = SFP+ transceiver not present
 479                          *        SFP Status 0x2 = SFP+ transceiver invalid
 480                          *        SFP Status 0x3 = SFP+ transceiver present and
 481                          *        valid
 482                          *      Bits 12-14 = Heartbeat Counter
 483                          *      Bit 15     = Heartbeat Monitor Enable
 484                          *      Bits 16-17 = SFP Additional Info
 485                          *        SFP info 0x0 = Unregocnized transceiver for
 486                          *        Ethernet
 487                          *        SFP info 0x1 = SFP+ brand validation failed
 488                          *        SFP info 0x2 = SFP+ speed validation failed
 489                          *        SFP info 0x3 = SFP+ access error
 490                          *      Bit 18     = SFP Multirate
 491                          *      Bit 19     = SFP Tx Fault
 492                          *      Bits 20-22 = Link Speed
 493                          *      Bits 23-27 = Reserved
 494                          *      Bits 28-30 = DCBX Status
 495                          *        DCBX Status 0x0 = DCBX Disabled
 496                          *        DCBX Status 0x1 = DCBX Enabled
 497                          *        DCBX Status 0x2 = DCBX Exchange error
 498                          *      Bit 31     = Reserved
 499                          */
 500                         peg_fw_state = (mb[2] & 0x00ff);
 501                         nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
 502                         nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
 503                         sfp_status = ((mb[2] & 0x0c00) >> 10);
 504                         htbt_counter = ((mb[2] & 0x7000) >> 12);
 505                         htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
 506                         sfp_additional_info = (mb[6] & 0x0003);
 507                         sfp_multirate = ((mb[6] & 0x0004) >> 2);
 508                         sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
 509                         link_speed = ((mb[6] & 0x0070) >> 4);
 510                         dcbx_status = ((mb[6] & 0x7000) >> 12);
 511
 512                         ql_log(ql_log_warn, vha, 0x5066,
 513                             "Peg-to-Fc Status Register:\n"
 514                             "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
 515                             "nw_interface_signal_detect=0x%x"
 516                             "\nsfp_statis=0x%x.\n ", peg_fw_state,
 517                             nw_interface_link_up, nw_interface_signal_detect,
 518                             sfp_status);
 519                         ql_log(ql_log_warn, vha, 0x5067,
 520                             "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
 521                             "sfp_additional_info=0x%x, sfp_multirate=0x%x.\n ",
 522                             htbt_counter, htbt_monitor_enable,
 523                             sfp_additional_info, sfp_multirate);
 524                         ql_log(ql_log_warn, vha, 0x5068,
 525                             "sfp_tx_fault=0x%x, link_state=0x%x, "
 526                             "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
 527                             dcbx_status);
 528
 529                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 530                 }
 531
 532                 if (mb[1] & IDC_HEARTBEAT_FAILURE) {
 533                         ql_log(ql_log_warn, vha, 0x5069,
 534                             "Heartbeat Failure encountered, chip reset "
 535                             "required.\n");
 536
 537                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 538                 }
 539         }
 540
 541         if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
 542                 ql_log(ql_log_info, vha, 0x506a,
 543                     "IDC Device-State changed = 0x%x.\n", mb[4]);
 544                 if (ha->flags.nic_core_reset_owner)
 545                         return;
 546                 qla83xx_schedule_work(vha, MBA_IDC_AEN);
 547         }
 548 }
 549
 550 int
 551 qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
 552 {
 553         struct qla_hw_data *ha = vha->hw;
 554         scsi_qla_host_t *vp;
 555         uint32_t vp_did;
 556         unsigned long flags;
 557         int ret = 0;
 558
 559         if (!ha->num_vhosts)
 560                 return ret;
 561
 562         spin_lock_irqsave(&ha->vport_slock, flags);
 563         list_for_each_entry(vp, &ha->vp_list, list) {
 564                 vp_did = vp->d_id.b24;
 565                 if (vp_did == rscn_entry) {
 566                         ret = 1;
 567                         break;
 568                 }
 569         }
 570         spin_unlock_irqrestore(&ha->vport_slock, flags);
 571
 572         return ret;
 573 }
 574
 575 fc_port_t *
 576 qla2x00_find_fcport_by_loopid(scsi_qla_host_t *vha, uint16_t loop_id)
 577 {
 578         fc_port_t *f, *tf;
 579
 580         f = tf = NULL;
 581         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list)
 582                 if (f->loop_id == loop_id)
 583                         return f;
 584         return NULL;
 585 }
 586
 587 fc_port_t *
 588 qla2x00_find_fcport_by_wwpn(scsi_qla_host_t *vha, u8 *wwpn, u8 incl_deleted)
 589 {
 590         fc_port_t *f, *tf;
 591
 592         f = tf = NULL;
 593         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 594                 if (memcmp(f->port_name, wwpn, WWN_SIZE) == 0) {
 595                         if (incl_deleted)
 596                                 return f;
 597                         else if (f->deleted == 0)
 598                                 return f;
 599                 }
 600         }
 601         return NULL;
 602 }
 603
 604 fc_port_t *
 605 qla2x00_find_fcport_by_nportid(scsi_qla_host_t *vha, port_id_t *id,
 606         u8 incl_deleted)
 607 {
 608         fc_port_t *f, *tf;
 609
 610         f = tf = NULL;
 611         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 612                 if (f->d_id.b24 == id->b24) {
 613                         if (incl_deleted)
 614                                 return f;
 615                         else if (f->deleted == 0)
 616                                 return f;
 617                 }
 618         }
 619         return NULL;
 620 }
 621
 622 /**
 623  * qla2x00_async_event() - Process aynchronous events.
 624  * @vha: SCSI driver HA context
 625  * @rsp: response queue
 626  * @mb: Mailbox registers (0 - 3)
 627  */
 628 void
 629 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 630 {
 631         uint16_t        handle_cnt;
 632         uint16_t        cnt, mbx;
 633         uint32_t        handles[5];
 634         struct qla_hw_data *ha = vha->hw;
 635         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 636         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 637         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 638         uint32_t        rscn_entry, host_pid;
 639         unsigned long   flags;
 640         fc_port_t       *fcport = NULL;
 641
 642         if (!vha->hw->flags.fw_started)
 643                 return;
 644
 645         /* Setup to process RIO completion. */
 646         handle_cnt = 0;
 647         if (IS_CNA_CAPABLE(ha))
 648                 goto skip_rio;
 649         switch (mb[0]) {
 650         case MBA_SCSI_COMPLETION:
 651                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 652                 handle_cnt = 1;
 653                 break;
 654         case MBA_CMPLT_1_16BIT:
 655                 handles[0] = mb[1];
 656                 handle_cnt = 1;
 657                 mb[0] = MBA_SCSI_COMPLETION;
 658                 break;
 659         case MBA_CMPLT_2_16BIT:
 660                 handles[0] = mb[1];
 661                 handles[1] = mb[2];
 662                 handle_cnt = 2;
 663                 mb[0] = MBA_SCSI_COMPLETION;
 664                 break;
 665         case MBA_CMPLT_3_16BIT:
 666                 handles[0] = mb[1];
 667                 handles[1] = mb[2];
 668                 handles[2] = mb[3];
 669                 handle_cnt = 3;
 670                 mb[0] = MBA_SCSI_COMPLETION;
 671                 break;
 672         case MBA_CMPLT_4_16BIT:
 673                 handles[0] = mb[1];
 674                 handles[1] = mb[2];
 675                 handles[2] = mb[3];
 676                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 677                 handle_cnt = 4;
 678                 mb[0] = MBA_SCSI_COMPLETION;
 679                 break;
 680         case MBA_CMPLT_5_16BIT:
 681                 handles[0] = mb[1];
 682                 handles[1] = mb[2];
 683                 handles[2] = mb[3];
 684                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 685                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 686                 handle_cnt = 5;
 687                 mb[0] = MBA_SCSI_COMPLETION;
 688                 break;
 689         case MBA_CMPLT_2_32BIT:
 690                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 691                 handles[1] = le32_to_cpu(
 692                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 693                     RD_MAILBOX_REG(ha, reg, 6));
 694                 handle_cnt = 2;
 695                 mb[0] = MBA_SCSI_COMPLETION;
 696                 break;
 697         default:
 698                 break;
 699         }
 700 skip_rio:
 701         switch (mb[0]) {
 702         case MBA_SCSI_COMPLETION:       /* Fast Post */
 703                 if (!vha->flags.online)
 704                         break;
 705
 706                 for (cnt = 0; cnt < handle_cnt; cnt++)
 707                         qla2x00_process_completed_request(vha, rsp->req,
 708                                 handles[cnt]);
 709                 break;
 710
 711         case MBA_RESET:                 /* Reset */
 712                 ql_dbg(ql_dbg_async, vha, 0x5002,
 713                     "Asynchronous RESET.\n");
 714
 715                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 716                 break;
 717
 718         case MBA_SYSTEM_ERR:            /* System Error */
 719                 mbx = (IS_QLA81XX(ha) || IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
 720                     IS_QLA28XX(ha)) ?
 721                         RD_REG_WORD(&reg24->mailbox7) : 0;
 722                 ql_log(ql_log_warn, vha, 0x5003,
 723                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 724                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 725                 ha->fw_dump_mpi =
 726                     (IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&
 727                     RD_REG_WORD(&reg24->mailbox7) & BIT_8;
 728                 ha->isp_ops->fw_dump(vha, 1);
 729                 ha->flags.fw_init_done = 0;
 730                 QLA_FW_STOPPED(ha);
 731
 732                 if (IS_FWI2_CAPABLE(ha)) {
 733                         if (mb[1] == 0 && mb[2] == 0) {
 734                                 ql_log(ql_log_fatal, vha, 0x5004,
 735                                     "Unrecoverable Hardware Error: adapter "
 736                                     "marked OFFLINE!\n");
 737                                 vha->flags.online = 0;
 738                                 vha->device_flags |= DFLG_DEV_FAILED;
 739                         } else {
 740                                 /* Check to see if MPI timeout occurred */
 741                                 if ((mbx & MBX_3) && (ha->port_no == 0))
 742                                         set_bit(MPI_RESET_NEEDED,
 743                                             &vha->dpc_flags);
 744
 745                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 746                         }
 747                 } else if (mb[1] == 0) {
 748                         ql_log(ql_log_fatal, vha, 0x5005,
 749                             "Unrecoverable Hardware Error: adapter marked "
 750                             "OFFLINE!\n");
 751                         vha->flags.online = 0;
 752                         vha->device_flags |= DFLG_DEV_FAILED;
 753                 } else
 754                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 755                 break;
 756
 757         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 758                 ql_log(ql_log_warn, vha, 0x5006,
 759                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 760
 761                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 762                 break;
 763
 764         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 765                 ql_log(ql_log_warn, vha, 0x5007,
 766                     "ISP Response Transfer Error (%x).\n", mb[1]);
 767
 768                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 769                 break;
 770
 771         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 772                 ql_dbg(ql_dbg_async, vha, 0x5008,
 773                     "Asynchronous WAKEUP_THRES (%x).\n", mb[1]);
 774                 break;
 775
 776         case MBA_LOOP_INIT_ERR:
 777                 ql_log(ql_log_warn, vha, 0x5090,
 778                     "LOOP INIT ERROR (%x).\n", mb[1]);
 779                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 780                 break;
 781
 782         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 783                 ha->flags.lip_ae = 1;
 784
 785                 ql_dbg(ql_dbg_async, vha, 0x5009,
 786                     "LIP occurred (%x).\n", mb[1]);
 787
 788                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 789                         atomic_set(&vha->loop_state, LOOP_DOWN);
 790                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 791                         qla2x00_mark_all_devices_lost(vha, 1);
 792                 }
 793
 794                 if (vha->vp_idx) {
 795                         atomic_set(&vha->vp_state, VP_FAILED);
 796                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 797                 }
 798
 799                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 800                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 801
 802                 vha->flags.management_server_logged_in = 0;
 803                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 804                 break;
 805
 806         case MBA_LOOP_UP:               /* Loop Up Event */
 807                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 808                         ha->link_data_rate = PORT_SPEED_1GB;
 809                 else
 810                         ha->link_data_rate = mb[1];
 811
 812                 ql_log(ql_log_info, vha, 0x500a,
 813                     "LOOP UP detected (%s Gbps).\n",
 814                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 815
 816                 vha->flags.management_server_logged_in = 0;
 817                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 818
 819                 if (AUTO_DETECT_SFP_SUPPORT(vha)) {
 820                         set_bit(DETECT_SFP_CHANGE, &vha->dpc_flags);
 821                         qla2xxx_wake_dpc(vha);
 822                 }
 823                 break;
 824
 825         case MBA_LOOP_DOWN:             /* Loop Down Event */
 826                 SAVE_TOPO(ha);
 827                 ha->flags.lip_ae = 0;
 828                 ha->current_topology = 0;
 829
 830                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 831                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 832                 mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
 833                         : mbx;
 834                 ql_log(ql_log_info, vha, 0x500b,
 835                     "LOOP DOWN detected (%x %x %x %x).\n",
 836                     mb[1], mb[2], mb[3], mbx);
 837
 838                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 839                         atomic_set(&vha->loop_state, LOOP_DOWN);
 840                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 841                         /*
 842                          * In case of loop down, restore WWPN from
 843                          * NVRAM in case of FA-WWPN capable ISP
 844                          * Restore for Physical Port only
 845                          */
 846                         if (!vha->vp_idx) {
 847                                 if (ha->flags.fawwpn_enabled &&
 848                                     (ha->current_topology == ISP_CFG_F)) {
 849                                         void *wwpn = ha->init_cb->port_name;
 850
 851                                         memcpy(vha->port_name, wwpn, WWN_SIZE);
 852                                         fc_host_port_name(vha->host) =
 853                                             wwn_to_u64(vha->port_name);
 854                                         ql_dbg(ql_dbg_init + ql_dbg_verbose,
 855                                             vha, 0x00d8, "LOOP DOWN detected,"
 856                                             "restore WWPN %016llx\n",
 857                                             wwn_to_u64(vha->port_name));
 858                                 }
 859
 860                                 clear_bit(VP_CONFIG_OK, &vha->vp_flags);
 861                         }
 862
 863                         vha->device_flags |= DFLG_NO_CABLE;
 864                         qla2x00_mark_all_devices_lost(vha, 1);
 865                 }
 866
 867                 if (vha->vp_idx) {
 868                         atomic_set(&vha->vp_state, VP_FAILED);
 869                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 870                 }
 871
 872                 vha->flags.management_server_logged_in = 0;
 873                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 874                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 875                 break;
 876
 877         case MBA_LIP_RESET:             /* LIP reset occurred */
 878                 ql_dbg(ql_dbg_async, vha, 0x500c,
 879                     "LIP reset occurred (%x).\n", mb[1]);
 880
 881                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 882                         atomic_set(&vha->loop_state, LOOP_DOWN);
 883                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 884                         qla2x00_mark_all_devices_lost(vha, 1);
 885                 }
 886
 887                 if (vha->vp_idx) {
 888                         atomic_set(&vha->vp_state, VP_FAILED);
 889                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 890                 }
 891
 892                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 893
 894                 ha->operating_mode = LOOP;
 895                 vha->flags.management_server_logged_in = 0;
 896                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 897                 break;
 898
 899         /* case MBA_DCBX_COMPLETE: */
 900         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 901                 ha->flags.lip_ae = 0;
 902
 903                 if (IS_QLA2100(ha))
 904                         break;
 905
 906                 if (IS_CNA_CAPABLE(ha)) {
 907                         ql_dbg(ql_dbg_async, vha, 0x500d,
 908                             "DCBX Completed -- %04x %04x %04x.\n",
 909                             mb[1], mb[2], mb[3]);
 910                         if (ha->notify_dcbx_comp && !vha->vp_idx)
 911                                 complete(&ha->dcbx_comp);
 912
 913                 } else
 914                         ql_dbg(ql_dbg_async, vha, 0x500e,
 915                             "Asynchronous P2P MODE received.\n");
 916
 917                 /*
 918                  * Until there's a transition from loop down to loop up, treat
 919                  * this as loop down only.
 920                  */
 921                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 922                         atomic_set(&vha->loop_state, LOOP_DOWN);
 923                         if (!atomic_read(&vha->loop_down_timer))
 924                                 atomic_set(&vha->loop_down_timer,
 925                                     LOOP_DOWN_TIME);
 926                         if (!N2N_TOPO(ha))
 927                                 qla2x00_mark_all_devices_lost(vha, 1);
 928                 }
 929
 930                 if (vha->vp_idx) {
 931                         atomic_set(&vha->vp_state, VP_FAILED);
 932                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 933                 }
 934
 935                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 936                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 937
 938                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 939                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 940
 941                 vha->flags.management_server_logged_in = 0;
 942                 break;
 943
 944         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 945                 if (IS_QLA2100(ha))
 946                         break;
 947
 948                 ql_dbg(ql_dbg_async, vha, 0x500f,
 949                     "Configuration change detected: value=%x.\n", mb[1]);
 950
 951                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 952                         atomic_set(&vha->loop_state, LOOP_DOWN);
 953                         if (!atomic_read(&vha->loop_down_timer))
 954                                 atomic_set(&vha->loop_down_timer,
 955                                     LOOP_DOWN_TIME);
 956                         qla2x00_mark_all_devices_lost(vha, 1);
 957                 }
 958
 959                 if (vha->vp_idx) {
 960                         atomic_set(&vha->vp_state, VP_FAILED);
 961                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 962                 }
 963
 964                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 965                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 966                 break;
 967
 968         case MBA_PORT_UPDATE:           /* Port database update */
 969                 /*
 970                  * Handle only global and vn-port update events
 971                  *
 972                  * Relevant inputs:
 973                  * mb[1] = N_Port handle of changed port
 974                  * OR 0xffff for global event
 975                  * mb[2] = New login state
 976                  * 7 = Port logged out
 977                  * mb[3] = LSB is vp_idx, 0xff = all vps
 978                  *
 979                  * Skip processing if:
 980                  *       Event is global, vp_idx is NOT all vps,
 981                  *           vp_idx does not match
 982                  *       Event is not global, vp_idx does not match
 983                  */
 984                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 985                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 986                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 987                         break;
 988
 989                 if (mb[2] == 0x7) {
 990                         ql_dbg(ql_dbg_async, vha, 0x5010,
 991                             "Port %s %04x %04x %04x.\n",
 992                             mb[1] == 0xffff ? "unavailable" : "logout",
 993                             mb[1], mb[2], mb[3]);
 994
 995                         if (mb[1] == 0xffff)
 996                                 goto global_port_update;
 997
 998                         if (mb[1] == NPH_SNS_LID(ha)) {
 999                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1000                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1001                                 break;
1002                         }
1003
1004                         /* use handle_cnt for loop id/nport handle */
1005                         if (IS_FWI2_CAPABLE(ha))
1006                                 handle_cnt = NPH_SNS;
1007                         else
1008                                 handle_cnt = SIMPLE_NAME_SERVER;
1009                         if (mb[1] == handle_cnt) {
1010                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1011                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1012                                 break;
1013                         }
1014
1015                         /* Port logout */
1016                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
1017                         if (!fcport)
1018                                 break;
1019                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1020                                 break;
1021                         ql_dbg(ql_dbg_async, vha, 0x508a,
1022                             "Marking port lost loopid=%04x portid=%06x.\n",
1023                             fcport->loop_id, fcport->d_id.b24);
1024                         if (qla_ini_mode_enabled(vha)) {
1025                                 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1026                                 fcport->logout_on_delete = 0;
1027                                 qlt_schedule_sess_for_deletion(fcport);
1028                         }
1029                         break;
1030
1031 global_port_update:
1032                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1033                                 atomic_set(&vha->loop_state, LOOP_DOWN);
1034                                 atomic_set(&vha->loop_down_timer,
1035                                     LOOP_DOWN_TIME);
1036                                 vha->device_flags |= DFLG_NO_CABLE;
1037                                 qla2x00_mark_all_devices_lost(vha, 1);
1038                         }
1039
1040                         if (vha->vp_idx) {
1041                                 atomic_set(&vha->vp_state, VP_FAILED);
1042                                 fc_vport_set_state(vha->fc_vport,
1043                                     FC_VPORT_FAILED);
1044                                 qla2x00_mark_all_devices_lost(vha, 1);
1045                         }
1046
1047                         vha->flags.management_server_logged_in = 0;
1048                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1049                         break;
1050                 }
1051
1052                 /*
1053                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1054                  * event etc. earlier indicating loop is down) then process
1055                  * it.  Otherwise ignore it and Wait for RSCN to come in.
1056                  */
1057                 atomic_set(&vha->loop_down_timer, 0);
1058                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
1059                         !ha->flags.n2n_ae  &&
1060                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
1061                         ql_dbg(ql_dbg_async, vha, 0x5011,
1062                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
1063                             mb[1], mb[2], mb[3]);
1064                         break;
1065                 }
1066
1067                 ql_dbg(ql_dbg_async, vha, 0x5012,
1068                     "Port database changed %04x %04x %04x.\n",
1069                     mb[1], mb[2], mb[3]);
1070
1071                 /*
1072                  * Mark all devices as missing so we will login again.
1073                  */
1074                 atomic_set(&vha->loop_state, LOOP_UP);
1075                 vha->scan.scan_retry = 0;
1076
1077                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1078                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1079                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
1080                 break;
1081
1082         case MBA_RSCN_UPDATE:           /* State Change Registration */
1083                 /* Check if the Vport has issued a SCR */
1084                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1085                         break;
1086                 /* Only handle SCNs for our Vport index. */
1087                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1088                         break;
1089
1090                 ql_dbg(ql_dbg_async, vha, 0x5013,
1091                     "RSCN database changed -- %04x %04x %04x.\n",
1092                     mb[1], mb[2], mb[3]);
1093
1094                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1095                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1096                                 | vha->d_id.b.al_pa;
1097                 if (rscn_entry == host_pid) {
1098                         ql_dbg(ql_dbg_async, vha, 0x5014,
1099                             "Ignoring RSCN update to local host "
1100                             "port ID (%06x).\n", host_pid);
1101                         break;
1102                 }
1103
1104                 /* Ignore reserved bits from RSCN-payload. */
1105                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1106
1107                 /* Skip RSCNs for virtual ports on the same physical port */
1108                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1109                         break;
1110
1111                 atomic_set(&vha->loop_down_timer, 0);
1112                 vha->flags.management_server_logged_in = 0;
1113                 {
1114                         struct event_arg ea;
1115
1116                         memset(&ea, 0, sizeof(ea));
1117                         ea.id.b24 = rscn_entry;
1118                         ea.id.b.rsvd_1 = rscn_entry >> 24;
1119                         qla2x00_handle_rscn(vha, &ea);
1120                         qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1121                 }
1122                 break;
1123         /* case MBA_RIO_RESPONSE: */
1124         case MBA_ZIO_RESPONSE:
1125                 ql_dbg(ql_dbg_async, vha, 0x5015,
1126                     "[R|Z]IO update completion.\n");
1127
1128                 if (IS_FWI2_CAPABLE(ha))
1129                         qla24xx_process_response_queue(vha, rsp);
1130                 else
1131                         qla2x00_process_response_queue(rsp);
1132                 break;
1133
1134         case MBA_DISCARD_RND_FRAME:
1135                 ql_dbg(ql_dbg_async, vha, 0x5016,
1136                     "Discard RND Frame -- %04x %04x %04x.\n",
1137                     mb[1], mb[2], mb[3]);
1138                 break;
1139
1140         case MBA_TRACE_NOTIFICATION:
1141                 ql_dbg(ql_dbg_async, vha, 0x5017,
1142                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1143                 break;
1144
1145         case MBA_ISP84XX_ALERT:
1146                 ql_dbg(ql_dbg_async, vha, 0x5018,
1147                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1148                     mb[1], mb[2], mb[3]);
1149
1150                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1151                 switch (mb[1]) {
1152                 case A84_PANIC_RECOVERY:
1153                         ql_log(ql_log_info, vha, 0x5019,
1154                             "Alert 84XX: panic recovery %04x %04x.\n",
1155                             mb[2], mb[3]);
1156                         break;
1157                 case A84_OP_LOGIN_COMPLETE:
1158                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1159                         ql_log(ql_log_info, vha, 0x501a,
1160                             "Alert 84XX: firmware version %x.\n",
1161                             ha->cs84xx->op_fw_version);
1162                         break;
1163                 case A84_DIAG_LOGIN_COMPLETE:
1164                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1165                         ql_log(ql_log_info, vha, 0x501b,
1166                             "Alert 84XX: diagnostic firmware version %x.\n",
1167                             ha->cs84xx->diag_fw_version);
1168                         break;
1169                 case A84_GOLD_LOGIN_COMPLETE:
1170                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1171                         ha->cs84xx->fw_update = 1;
1172                         ql_log(ql_log_info, vha, 0x501c,
1173                             "Alert 84XX: gold firmware version %x.\n",
1174                             ha->cs84xx->gold_fw_version);
1175                         break;
1176                 default:
1177                         ql_log(ql_log_warn, vha, 0x501d,
1178                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1179                             mb[1], mb[2], mb[3]);
1180                 }
1181                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1182                 break;
1183         case MBA_DCBX_START:
1184                 ql_dbg(ql_dbg_async, vha, 0x501e,
1185                     "DCBX Started -- %04x %04x %04x.\n",
1186                     mb[1], mb[2], mb[3]);
1187                 break;
1188         case MBA_DCBX_PARAM_UPDATE:
1189                 ql_dbg(ql_dbg_async, vha, 0x501f,
1190                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1191                     mb[1], mb[2], mb[3]);
1192                 break;
1193         case MBA_FCF_CONF_ERR:
1194                 ql_dbg(ql_dbg_async, vha, 0x5020,
1195                     "FCF Configuration Error -- %04x %04x %04x.\n",
1196                     mb[1], mb[2], mb[3]);
1197                 break;
1198         case MBA_IDC_NOTIFY:
1199                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1200                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1201                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1202                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1203                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1204                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1205                                 /*
1206                                  * Extend loop down timer since port is active.
1207                                  */
1208                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1209                                         atomic_set(&vha->loop_down_timer,
1210                                             LOOP_DOWN_TIME);
1211                                 qla2xxx_wake_dpc(vha);
1212                         }
1213                 }
1214                 /* fall through */
1215         case MBA_IDC_COMPLETE:
1216                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1217                         complete(&ha->lb_portup_comp);
1218                 /* Fallthru */
1219         case MBA_IDC_TIME_EXT:
1220                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1221                     IS_QLA8044(ha))
1222                         qla81xx_idc_event(vha, mb[0], mb[1]);
1223                 break;
1224
1225         case MBA_IDC_AEN:
1226                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1227                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1228                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1229                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1230                 qla83xx_handle_8200_aen(vha, mb);
1231                 break;
1232
1233         case MBA_DPORT_DIAGNOSTICS:
1234                 ql_dbg(ql_dbg_async, vha, 0x5052,
1235                     "D-Port Diagnostics: %04x result=%s\n",
1236                     mb[0],
1237                     mb[1] == 0 ? "start" :
1238                     mb[1] == 1 ? "done (pass)" :
1239                     mb[1] == 2 ? "done (error)" : "other");
1240                 break;
1241
1242         case MBA_TEMPERATURE_ALERT:
1243                 ql_dbg(ql_dbg_async, vha, 0x505e,
1244                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1245                 if (mb[1] == 0x12)
1246                         schedule_work(&ha->board_disable);
1247                 break;
1248
1249         case MBA_TRANS_INSERT:
1250                 ql_dbg(ql_dbg_async, vha, 0x5091,
1251                     "Transceiver Insertion: %04x\n", mb[1]);
1252                 break;
1253
1254         default:
1255                 ql_dbg(ql_dbg_async, vha, 0x5057,
1256                     "Unknown AEN:%04x %04x %04x %04x\n",
1257                     mb[0], mb[1], mb[2], mb[3]);
1258         }
1259
1260         qlt_async_event(mb[0], vha, mb);
1261
1262         if (!vha->vp_idx && ha->num_vhosts)
1263                 qla2x00_alert_all_vps(rsp, mb);
1264 }
1265
1266 /**
1267  * qla2x00_process_completed_request() - Process a Fast Post response.
1268  * @vha: SCSI driver HA context
1269  * @req: request queue
1270  * @index: SRB index
1271  */
1272 void
1273 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1274                                   struct req_que *req, uint32_t index)
1275 {
1276         srb_t *sp;
1277         struct qla_hw_data *ha = vha->hw;
1278
1279         /* Validate handle. */
1280         if (index >= req->num_outstanding_cmds) {
1281                 ql_log(ql_log_warn, vha, 0x3014,
1282                     "Invalid SCSI command index (%x).\n", index);
1283
1284                 if (IS_P3P_TYPE(ha))
1285                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1286                 else
1287                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1288                 return;
1289         }
1290
1291         sp = req->outstanding_cmds[index];
1292         if (sp) {
1293                 /* Free outstanding command slot. */
1294                 req->outstanding_cmds[index] = NULL;
1295
1296                 /* Save ISP completion status */
1297                 sp->done(sp, DID_OK << 16);
1298         } else {
1299                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1300
1301                 if (IS_P3P_TYPE(ha))
1302                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1303                 else
1304                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1305         }
1306 }
1307
1308 srb_t *
1309 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1310     struct req_que *req, void *iocb)
1311 {
1312         struct qla_hw_data *ha = vha->hw;
1313         sts_entry_t *pkt = iocb;
1314         srb_t *sp = NULL;
1315         uint16_t index;
1316
1317         index = LSW(pkt->handle);
1318         if (index >= req->num_outstanding_cmds) {
1319                 ql_log(ql_log_warn, vha, 0x5031,
1320                            "Invalid command index (%x) type %8ph.\n",
1321                            index, iocb);
1322                 if (IS_P3P_TYPE(ha))
1323                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1324                 else
1325                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1326                 goto done;
1327         }
1328         sp = req->outstanding_cmds[index];
1329         if (!sp) {
1330                 ql_log(ql_log_warn, vha, 0x5032,
1331                     "Invalid completion handle (%x) -- timed-out.\n", index);
1332                 return sp;
1333         }
1334         if (sp->handle != index) {
1335                 ql_log(ql_log_warn, vha, 0x5033,
1336                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1337                 return NULL;
1338         }
1339
1340         req->outstanding_cmds[index] = NULL;
1341
1342 done:
1343         return sp;
1344 }
1345
1346 static void
1347 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1348     struct mbx_entry *mbx)
1349 {
1350         const char func[] = "MBX-IOCB";
1351         const char *type;
1352         fc_port_t *fcport;
1353         srb_t *sp;
1354         struct srb_iocb *lio;
1355         uint16_t *data;
1356         uint16_t status;
1357
1358         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1359         if (!sp)
1360                 return;
1361
1362         lio = &sp->u.iocb_cmd;
1363         type = sp->name;
1364         fcport = sp->fcport;
1365         data = lio->u.logio.data;
1366
1367         data[0] = MBS_COMMAND_ERROR;
1368         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1369             QLA_LOGIO_LOGIN_RETRIED : 0;
1370         if (mbx->entry_status) {
1371                 ql_dbg(ql_dbg_async, vha, 0x5043,
1372                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1373                     "entry-status=%x status=%x state-flag=%x "
1374                     "status-flags=%x.\n", type, sp->handle,
1375                     fcport->d_id.b.domain, fcport->d_id.b.area,
1376                     fcport->d_id.b.al_pa, mbx->entry_status,
1377                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1378                     le16_to_cpu(mbx->status_flags));
1379
1380                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1381                     mbx, sizeof(*mbx));
1382
1383                 goto logio_done;
1384         }
1385
1386         status = le16_to_cpu(mbx->status);
1387         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1388             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1389                 status = 0;
1390         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1391                 ql_dbg(ql_dbg_async, vha, 0x5045,
1392                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1393                     type, sp->handle, fcport->d_id.b.domain,
1394                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1395                     le16_to_cpu(mbx->mb1));
1396
1397                 data[0] = MBS_COMMAND_COMPLETE;
1398                 if (sp->type == SRB_LOGIN_CMD) {
1399                         fcport->port_type = FCT_TARGET;
1400                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1401                                 fcport->port_type = FCT_INITIATOR;
1402                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1403                                 fcport->flags |= FCF_FCP2_DEVICE;
1404                 }
1405                 goto logio_done;
1406         }
1407
1408         data[0] = le16_to_cpu(mbx->mb0);
1409         switch (data[0]) {
1410         case MBS_PORT_ID_USED:
1411                 data[1] = le16_to_cpu(mbx->mb1);
1412                 break;
1413         case MBS_LOOP_ID_USED:
1414                 break;
1415         default:
1416                 data[0] = MBS_COMMAND_ERROR;
1417                 break;
1418         }
1419
1420         ql_log(ql_log_warn, vha, 0x5046,
1421             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1422             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1423             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1424             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1425             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1426             le16_to_cpu(mbx->mb7));
1427
1428 logio_done:
1429         sp->done(sp, 0);
1430 }
1431
1432 static void
1433 qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1434     struct mbx_24xx_entry *pkt)
1435 {
1436         const char func[] = "MBX-IOCB2";
1437         srb_t *sp;
1438         struct srb_iocb *si;
1439         u16 sz, i;
1440         int res;
1441
1442         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1443         if (!sp)
1444                 return;
1445
1446         si = &sp->u.iocb_cmd;
1447         sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));
1448
1449         for (i = 0; i < sz; i++)
1450                 si->u.mbx.in_mb[i] = le16_to_cpu(pkt->mb[i]);
1451
1452         res = (si->u.mbx.in_mb[0] & MBS_MASK);
1453
1454         sp->done(sp, res);
1455 }
1456
1457 static void
1458 qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1459     struct nack_to_isp *pkt)
1460 {
1461         const char func[] = "nack";
1462         srb_t *sp;
1463         int res = 0;
1464
1465         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1466         if (!sp)
1467                 return;
1468
1469         if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
1470                 res = QLA_FUNCTION_FAILED;
1471
1472         sp->done(sp, res);
1473 }
1474
1475 static void
1476 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1477     sts_entry_t *pkt, int iocb_type)
1478 {
1479         const char func[] = "CT_IOCB";
1480         const char *type;
1481         srb_t *sp;
1482         struct bsg_job *bsg_job;
1483         struct fc_bsg_reply *bsg_reply;
1484         uint16_t comp_status;
1485         int res = 0;
1486
1487         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1488         if (!sp)
1489                 return;
1490
1491         switch (sp->type) {
1492         case SRB_CT_CMD:
1493             bsg_job = sp->u.bsg_job;
1494             bsg_reply = bsg_job->reply;
1495
1496             type = "ct pass-through";
1497
1498             comp_status = le16_to_cpu(pkt->comp_status);
1499
1500             /*
1501              * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1502              * fc payload  to the caller
1503              */
1504             bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1505             bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1506
1507             if (comp_status != CS_COMPLETE) {
1508                     if (comp_status == CS_DATA_UNDERRUN) {
1509                             res = DID_OK << 16;
1510                             bsg_reply->reply_payload_rcv_len =
1511                                 le16_to_cpu(pkt->rsp_info_len);
1512
1513                             ql_log(ql_log_warn, vha, 0x5048,
1514                                 "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
1515                                 type, comp_status,
1516                                 bsg_reply->reply_payload_rcv_len);
1517                     } else {
1518                             ql_log(ql_log_warn, vha, 0x5049,
1519                                 "CT pass-through-%s error comp_status=0x%x.\n",
1520                                 type, comp_status);
1521                             res = DID_ERROR << 16;
1522                             bsg_reply->reply_payload_rcv_len = 0;
1523                     }
1524                     ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1525                         pkt, sizeof(*pkt));
1526             } else {
1527                     res = DID_OK << 16;
1528                     bsg_reply->reply_payload_rcv_len =
1529                         bsg_job->reply_payload.payload_len;
1530                     bsg_job->reply_len = 0;
1531             }
1532             break;
1533         case SRB_CT_PTHRU_CMD:
1534             /*
1535              * borrowing sts_entry_24xx.comp_status.
1536              * same location as ct_entry_24xx.comp_status
1537              */
1538              res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1539                  (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1540                  sp->name);
1541              break;
1542         }
1543
1544         sp->done(sp, res);
1545 }
1546
1547 static void
1548 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1549     struct sts_entry_24xx *pkt, int iocb_type)
1550 {
1551         const char func[] = "ELS_CT_IOCB";
1552         const char *type;
1553         srb_t *sp;
1554         struct bsg_job *bsg_job;
1555         struct fc_bsg_reply *bsg_reply;
1556         uint16_t comp_status;
1557         uint32_t fw_status[3];
1558         int res;
1559         struct srb_iocb *els;
1560
1561         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1562         if (!sp)
1563                 return;
1564
1565         type = NULL;
1566         switch (sp->type) {
1567         case SRB_ELS_CMD_RPT:
1568         case SRB_ELS_CMD_HST:
1569                 type = "els";
1570                 break;
1571         case SRB_CT_CMD:
1572                 type = "ct pass-through";
1573                 break;
1574         case SRB_ELS_DCMD:
1575                 type = "Driver ELS logo";
1576                 if (iocb_type != ELS_IOCB_TYPE) {
1577                         ql_dbg(ql_dbg_user, vha, 0x5047,
1578                             "Completing %s: (%p) type=%d.\n",
1579                             type, sp, sp->type);
1580                         sp->done(sp, 0);
1581                         return;
1582                 }
1583                 break;
1584         case SRB_CT_PTHRU_CMD:
1585                 /* borrowing sts_entry_24xx.comp_status.
1586                    same location as ct_entry_24xx.comp_status
1587                  */
1588                 res = qla2x00_chk_ms_status(sp->vha, (ms_iocb_entry_t *)pkt,
1589                         (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1590                         sp->name);
1591                 sp->done(sp, res);
1592                 return;
1593         default:
1594                 ql_dbg(ql_dbg_user, vha, 0x503e,
1595                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1596                 return;
1597         }
1598
1599         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1600         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_1);
1601         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_2);
1602
1603         if (iocb_type == ELS_IOCB_TYPE) {
1604                 els = &sp->u.iocb_cmd;
1605                 els->u.els_plogi.fw_status[0] = fw_status[0];
1606                 els->u.els_plogi.fw_status[1] = fw_status[1];
1607                 els->u.els_plogi.fw_status[2] = fw_status[2];
1608                 els->u.els_plogi.comp_status = fw_status[0];
1609                 if (comp_status == CS_COMPLETE) {
1610                         res =  DID_OK << 16;
1611                 } else {
1612                         if (comp_status == CS_DATA_UNDERRUN) {
1613                                 res =  DID_OK << 16;
1614                                 els->u.els_plogi.len =
1615                                 le16_to_cpu(((struct els_sts_entry_24xx *)
1616                                         pkt)->total_byte_count);
1617                         } else {
1618                                 els->u.els_plogi.len = 0;
1619                                 res = DID_ERROR << 16;
1620                         }
1621                 }
1622                 ql_dbg(ql_dbg_user, vha, 0x503f,
1623                     "ELS IOCB Done -%s error hdl=%x comp_status=0x%x error subcode 1=0x%x error subcode 2=0x%x total_byte=0x%x\n",
1624                     type, sp->handle, comp_status, fw_status[1], fw_status[2],
1625                     le16_to_cpu(((struct els_sts_entry_24xx *)
1626                         pkt)->total_byte_count));
1627                 goto els_ct_done;
1628         }
1629
1630         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1631          * fc payload  to the caller
1632          */
1633         bsg_job = sp->u.bsg_job;
1634         bsg_reply = bsg_job->reply;
1635         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1636         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1637
1638         if (comp_status != CS_COMPLETE) {
1639                 if (comp_status == CS_DATA_UNDERRUN) {
1640                         res = DID_OK << 16;
1641                         bsg_reply->reply_payload_rcv_len =
1642                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1643
1644                         ql_dbg(ql_dbg_user, vha, 0x503f,
1645                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1646                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1647                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1648                             le16_to_cpu(((struct els_sts_entry_24xx *)
1649                                 pkt)->total_byte_count));
1650                 } else {
1651                         ql_dbg(ql_dbg_user, vha, 0x5040,
1652                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1653                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1654                             type, sp->handle, comp_status,
1655                             le16_to_cpu(((struct els_sts_entry_24xx *)
1656                                 pkt)->error_subcode_1),
1657                             le16_to_cpu(((struct els_sts_entry_24xx *)
1658                                     pkt)->error_subcode_2));
1659                         res = DID_ERROR << 16;
1660                         bsg_reply->reply_payload_rcv_len = 0;
1661                 }
1662                 memcpy(bsg_job->reply + sizeof(struct fc_bsg_reply),
1663                        fw_status, sizeof(fw_status));
1664                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1665                     pkt, sizeof(*pkt));
1666         }
1667         else {
1668                 res =  DID_OK << 16;
1669                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1670                 bsg_job->reply_len = 0;
1671         }
1672 els_ct_done:
1673
1674         sp->done(sp, res);
1675 }
1676
1677 static void
1678 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1679     struct logio_entry_24xx *logio)
1680 {
1681         const char func[] = "LOGIO-IOCB";
1682         const char *type;
1683         fc_port_t *fcport;
1684         srb_t *sp;
1685         struct srb_iocb *lio;
1686         uint16_t *data;
1687         uint32_t iop[2];
1688
1689         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1690         if (!sp)
1691                 return;
1692
1693         lio = &sp->u.iocb_cmd;
1694         type = sp->name;
1695         fcport = sp->fcport;
1696         data = lio->u.logio.data;
1697
1698         data[0] = MBS_COMMAND_ERROR;
1699         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1700                 QLA_LOGIO_LOGIN_RETRIED : 0;
1701         if (logio->entry_status) {
1702                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1703                     "Async-%s error entry - %8phC hdl=%x"
1704                     "portid=%02x%02x%02x entry-status=%x.\n",
1705                     type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
1706                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1707                     logio->entry_status);
1708                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1709                     logio, sizeof(*logio));
1710
1711                 goto logio_done;
1712         }
1713
1714         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1715                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1716                     "Async-%s complete - %8phC hdl=%x portid=%02x%02x%02x "
1717                     "iop0=%x.\n", type, fcport->port_name, sp->handle,
1718                     fcport->d_id.b.domain,
1719                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1720                     le32_to_cpu(logio->io_parameter[0]));
1721
1722                 vha->hw->exch_starvation = 0;
1723                 data[0] = MBS_COMMAND_COMPLETE;
1724
1725                 if (sp->type == SRB_PRLI_CMD) {
1726                         lio->u.logio.iop[0] =
1727                             le32_to_cpu(logio->io_parameter[0]);
1728                         lio->u.logio.iop[1] =
1729                             le32_to_cpu(logio->io_parameter[1]);
1730                         goto logio_done;
1731                 }
1732
1733                 if (sp->type != SRB_LOGIN_CMD)
1734                         goto logio_done;
1735
1736                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1737                 if (iop[0] & BIT_4) {
1738                         fcport->port_type = FCT_TARGET;
1739                         if (iop[0] & BIT_8)
1740                                 fcport->flags |= FCF_FCP2_DEVICE;
1741                 } else if (iop[0] & BIT_5)
1742                         fcport->port_type = FCT_INITIATOR;
1743
1744                 if (iop[0] & BIT_7)
1745                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1746
1747                 if (logio->io_parameter[7] || logio->io_parameter[8])
1748                         fcport->supported_classes |= FC_COS_CLASS2;
1749                 if (logio->io_parameter[9] || logio->io_parameter[10])
1750                         fcport->supported_classes |= FC_COS_CLASS3;
1751
1752                 goto logio_done;
1753         }
1754
1755         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1756         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1757         lio->u.logio.iop[0] = iop[0];
1758         lio->u.logio.iop[1] = iop[1];
1759         switch (iop[0]) {
1760         case LSC_SCODE_PORTID_USED:
1761                 data[0] = MBS_PORT_ID_USED;
1762                 data[1] = LSW(iop[1]);
1763                 break;
1764         case LSC_SCODE_NPORT_USED:
1765                 data[0] = MBS_LOOP_ID_USED;
1766                 break;
1767         case LSC_SCODE_CMD_FAILED:
1768                 if (iop[1] == 0x0606) {
1769                         /*
1770                          * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
1771                          * Target side acked.
1772                          */
1773                         data[0] = MBS_COMMAND_COMPLETE;
1774                         goto logio_done;
1775                 }
1776                 data[0] = MBS_COMMAND_ERROR;
1777                 break;
1778         case LSC_SCODE_NOXCB:
1779                 vha->hw->exch_starvation++;
1780                 if (vha->hw->exch_starvation > 5) {
1781                         ql_log(ql_log_warn, vha, 0xd046,
1782                             "Exchange starvation. Resetting RISC\n");
1783
1784                         vha->hw->exch_starvation = 0;
1785
1786                         if (IS_P3P_TYPE(vha->hw))
1787                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1788                         else
1789                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1790                         qla2xxx_wake_dpc(vha);
1791                 }
1792                 /* fall through */
1793         default:
1794                 data[0] = MBS_COMMAND_ERROR;
1795                 break;
1796         }
1797
1798         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1799             "Async-%s failed - %8phC hdl=%x portid=%02x%02x%02x comp=%x "
1800             "iop0=%x iop1=%x.\n", type, fcport->port_name,
1801                 sp->handle, fcport->d_id.b.domain,
1802             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1803             le16_to_cpu(logio->comp_status),
1804             le32_to_cpu(logio->io_parameter[0]),
1805             le32_to_cpu(logio->io_parameter[1]));
1806
1807 logio_done:
1808         sp->done(sp, 0);
1809 }
1810
1811 static void
1812 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1813 {
1814         const char func[] = "TMF-IOCB";
1815         const char *type;
1816         fc_port_t *fcport;
1817         srb_t *sp;
1818         struct srb_iocb *iocb;
1819         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1820
1821         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1822         if (!sp)
1823                 return;
1824
1825         iocb = &sp->u.iocb_cmd;
1826         type = sp->name;
1827         fcport = sp->fcport;
1828         iocb->u.tmf.data = QLA_SUCCESS;
1829
1830         if (sts->entry_status) {
1831                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1832                     "Async-%s error - hdl=%x entry-status(%x).\n",
1833                     type, sp->handle, sts->entry_status);
1834                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1835         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1836                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1837                     "Async-%s error - hdl=%x completion status(%x).\n",
1838                     type, sp->handle, sts->comp_status);
1839                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1840         } else if ((le16_to_cpu(sts->scsi_status) &
1841             SS_RESPONSE_INFO_LEN_VALID)) {
1842                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1843                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1844                             "Async-%s error - hdl=%x not enough response(%d).\n",
1845                             type, sp->handle, sts->rsp_data_len);
1846                 } else if (sts->data[3]) {
1847                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1848                             "Async-%s error - hdl=%x response(%x).\n",
1849                             type, sp->handle, sts->data[3]);
1850                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1851                 }
1852         }
1853
1854         if (iocb->u.tmf.data != QLA_SUCCESS)
1855                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, sp->vha, 0x5055,
1856                     sts, sizeof(*sts));
1857
1858         sp->done(sp, 0);
1859 }
1860
1861 static void qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1862     void *tsk, srb_t *sp)
1863 {
1864         fc_port_t *fcport;
1865         struct srb_iocb *iocb;
1866         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1867         uint16_t        state_flags;
1868         struct nvmefc_fcp_req *fd;
1869         uint16_t        ret = QLA_SUCCESS;
1870         uint16_t        comp_status = le16_to_cpu(sts->comp_status);
1871
1872         iocb = &sp->u.iocb_cmd;
1873         fcport = sp->fcport;
1874         iocb->u.nvme.comp_status = comp_status;
1875         state_flags  = le16_to_cpu(sts->state_flags);
1876         fd = iocb->u.nvme.desc;
1877
1878         if (unlikely(iocb->u.nvme.aen_op))
1879                 atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
1880
1881         /*
1882          * State flags: Bit 6 and 0.
1883          * If 0 is set, we don't care about 6.
1884          * both cases resp was dma'd to host buffer
1885          * if both are 0, that is good path case.
1886          * if six is set and 0 is clear, we need to
1887          * copy resp data from status iocb to resp buffer.
1888          */
1889         if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
1890                 iocb->u.nvme.rsp_pyld_len = 0;
1891         } else if ((state_flags & SF_FCP_RSP_DMA)) {
1892                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1893         } else if (state_flags & SF_NVME_ERSP) {
1894                 uint32_t *inbuf, *outbuf;
1895                 uint16_t iter;
1896
1897                 inbuf = (uint32_t *)&sts->nvme_ersp_data;
1898                 outbuf = (uint32_t *)fd->rspaddr;
1899                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1900                 if (unlikely(iocb->u.nvme.rsp_pyld_len >
1901                     sizeof(struct nvme_fc_ersp_iu))) {
1902                         if (ql_mask_match(ql_dbg_io)) {
1903                                 WARN_ONCE(1, "Unexpected response payload length %u.\n",
1904                                     iocb->u.nvme.rsp_pyld_len);
1905                                 ql_log(ql_log_warn, fcport->vha, 0x5100,
1906                                     "Unexpected response payload length %u.\n",
1907                                     iocb->u.nvme.rsp_pyld_len);
1908                         }
1909                         iocb->u.nvme.rsp_pyld_len =
1910                             sizeof(struct nvme_fc_ersp_iu);
1911                 }
1912                 iter = iocb->u.nvme.rsp_pyld_len >> 2;
1913                 for (; iter; iter--)
1914                         *outbuf++ = swab32(*inbuf++);
1915         } else { /* unhandled case */
1916             ql_log(ql_log_warn, fcport->vha, 0x503a,
1917                 "NVME-%s error. Unhandled state_flags of %x\n",
1918                 sp->name, state_flags);
1919         }
1920
1921         fd->transferred_length = fd->payload_length -
1922             le32_to_cpu(sts->residual_len);
1923
1924         if (unlikely(comp_status != CS_COMPLETE))
1925                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1926                    "NVME-%s ERR Handling - hdl=%x status(%x) tr_len:%x resid=%x  ox_id=%x\n",
1927                    sp->name, sp->handle, comp_status,
1928                    fd->transferred_length, le32_to_cpu(sts->residual_len),
1929                    sts->ox_id);
1930
1931         /*
1932          * If transport error then Failure (HBA rejects request)
1933          * otherwise transport will handle.
1934          */
1935         switch (comp_status) {
1936         case CS_COMPLETE:
1937                 break;
1938
1939         case CS_RESET:
1940         case CS_PORT_UNAVAILABLE:
1941         case CS_PORT_LOGGED_OUT:
1942                 fcport->nvme_flag |= NVME_FLAG_RESETTING;
1943                 /* fall through */
1944         case CS_ABORTED:
1945         case CS_PORT_BUSY:
1946                 fd->transferred_length = 0;
1947                 iocb->u.nvme.rsp_pyld_len = 0;
1948                 ret = QLA_ABORTED;
1949                 break;
1950         case CS_DATA_UNDERRUN:
1951                 break;
1952         default:
1953                 ret = QLA_FUNCTION_FAILED;
1954                 break;
1955         }
1956         sp->done(sp, ret);
1957 }
1958
1959 static void qla_ctrlvp_completed(scsi_qla_host_t *vha, struct req_que *req,
1960     struct vp_ctrl_entry_24xx *vce)
1961 {
1962         const char func[] = "CTRLVP-IOCB";
1963         srb_t *sp;
1964         int rval = QLA_SUCCESS;
1965
1966         sp = qla2x00_get_sp_from_handle(vha, func, req, vce);
1967         if (!sp)
1968                 return;
1969
1970         if (vce->entry_status != 0) {
1971                 ql_dbg(ql_dbg_vport, vha, 0x10c4,
1972                     "%s: Failed to complete IOCB -- error status (%x)\n",
1973                     sp->name, vce->entry_status);
1974                 rval = QLA_FUNCTION_FAILED;
1975         } else if (vce->comp_status != cpu_to_le16(CS_COMPLETE)) {
1976                 ql_dbg(ql_dbg_vport, vha, 0x10c5,
1977                     "%s: Failed to complete IOCB -- completion status (%x) vpidx %x\n",
1978                     sp->name, le16_to_cpu(vce->comp_status),
1979                     le16_to_cpu(vce->vp_idx_failed));
1980                 rval = QLA_FUNCTION_FAILED;
1981         } else {
1982                 ql_dbg(ql_dbg_vport, vha, 0x10c6,
1983                     "Done %s.\n", __func__);
1984         }
1985
1986         sp->rc = rval;
1987         sp->done(sp, rval);
1988 }
1989
1990 /* Process a single response queue entry. */
1991 static void qla2x00_process_response_entry(struct scsi_qla_host *vha,
1992                                            struct rsp_que *rsp,
1993                                            sts_entry_t *pkt)
1994 {
1995         sts21_entry_t *sts21_entry;
1996         sts22_entry_t *sts22_entry;
1997         uint16_t handle_cnt;
1998         uint16_t cnt;
1999
2000         switch (pkt->entry_type) {
2001         case STATUS_TYPE:
2002                 qla2x00_status_entry(vha, rsp, pkt);
2003                 break;
2004         case STATUS_TYPE_21:
2005                 sts21_entry = (sts21_entry_t *)pkt;
2006                 handle_cnt = sts21_entry->handle_count;
2007                 for (cnt = 0; cnt < handle_cnt; cnt++)
2008                         qla2x00_process_completed_request(vha, rsp->req,
2009                                                 sts21_entry->handle[cnt]);
2010                 break;
2011         case STATUS_TYPE_22:
2012                 sts22_entry = (sts22_entry_t *)pkt;
2013                 handle_cnt = sts22_entry->handle_count;
2014                 for (cnt = 0; cnt < handle_cnt; cnt++)
2015                         qla2x00_process_completed_request(vha, rsp->req,
2016                                                 sts22_entry->handle[cnt]);
2017                 break;
2018         case STATUS_CONT_TYPE:
2019                 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2020                 break;
2021         case MBX_IOCB_TYPE:
2022                 qla2x00_mbx_iocb_entry(vha, rsp->req, (struct mbx_entry *)pkt);
2023                 break;
2024         case CT_IOCB_TYPE:
2025                 qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2026                 break;
2027         default:
2028                 /* Type Not Supported. */
2029                 ql_log(ql_log_warn, vha, 0x504a,
2030                        "Received unknown response pkt type %x entry status=%x.\n",
2031                        pkt->entry_type, pkt->entry_status);
2032                 break;
2033         }
2034 }
2035
2036 /**
2037  * qla2x00_process_response_queue() - Process response queue entries.
2038  * @rsp: response queue
2039  */
2040 void
2041 qla2x00_process_response_queue(struct rsp_que *rsp)
2042 {
2043         struct scsi_qla_host *vha;
2044         struct qla_hw_data *ha = rsp->hw;
2045         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
2046         sts_entry_t     *pkt;
2047
2048         vha = pci_get_drvdata(ha->pdev);
2049
2050         if (!vha->flags.online)
2051                 return;
2052
2053         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2054                 pkt = (sts_entry_t *)rsp->ring_ptr;
2055
2056                 rsp->ring_index++;
2057                 if (rsp->ring_index == rsp->length) {
2058                         rsp->ring_index = 0;
2059                         rsp->ring_ptr = rsp->ring;
2060                 } else {
2061                         rsp->ring_ptr++;
2062                 }
2063
2064                 if (pkt->entry_status != 0) {
2065                         qla2x00_error_entry(vha, rsp, pkt);
2066                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2067                         wmb();
2068                         continue;
2069                 }
2070
2071                 qla2x00_process_response_entry(vha, rsp, pkt);
2072                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2073                 wmb();
2074         }
2075
2076         /* Adjust ring index */
2077         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
2078 }
2079
2080 static inline void
2081 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
2082                      uint32_t sense_len, struct rsp_que *rsp, int res)
2083 {
2084         struct scsi_qla_host *vha = sp->vha;
2085         struct scsi_cmnd *cp = GET_CMD_SP(sp);
2086         uint32_t track_sense_len;
2087
2088         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
2089                 sense_len = SCSI_SENSE_BUFFERSIZE;
2090
2091         SET_CMD_SENSE_LEN(sp, sense_len);
2092         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
2093         track_sense_len = sense_len;
2094
2095         if (sense_len > par_sense_len)
2096                 sense_len = par_sense_len;
2097
2098         memcpy(cp->sense_buffer, sense_data, sense_len);
2099
2100         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
2101         track_sense_len -= sense_len;
2102         SET_CMD_SENSE_LEN(sp, track_sense_len);
2103
2104         if (track_sense_len != 0) {
2105                 rsp->status_srb = sp;
2106                 cp->result = res;
2107         }
2108
2109         if (sense_len) {
2110                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
2111                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
2112                     sp->vha->host_no, cp->device->id, cp->device->lun,
2113                     cp);
2114                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
2115                     cp->sense_buffer, sense_len);
2116         }
2117 }
2118
2119 struct scsi_dif_tuple {
2120         __be16 guard;       /* Checksum */
2121         __be16 app_tag;         /* APPL identifier */
2122         __be32 ref_tag;         /* Target LBA or indirect LBA */
2123 };
2124
2125 /*
2126  * Checks the guard or meta-data for the type of error
2127  * detected by the HBA. In case of errors, we set the
2128  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
2129  * to indicate to the kernel that the HBA detected error.
2130  */
2131 static inline int
2132 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
2133 {
2134         struct scsi_qla_host *vha = sp->vha;
2135         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2136         uint8_t         *ap = &sts24->data[12];
2137         uint8_t         *ep = &sts24->data[20];
2138         uint32_t        e_ref_tag, a_ref_tag;
2139         uint16_t        e_app_tag, a_app_tag;
2140         uint16_t        e_guard, a_guard;
2141
2142         /*
2143          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
2144          * would make guard field appear at offset 2
2145          */
2146         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
2147         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
2148         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
2149         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
2150         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
2151         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
2152
2153         ql_dbg(ql_dbg_io, vha, 0x3023,
2154             "iocb(s) %p Returned STATUS.\n", sts24);
2155
2156         ql_dbg(ql_dbg_io, vha, 0x3024,
2157             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
2158             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
2159             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
2160             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
2161             a_app_tag, e_app_tag, a_guard, e_guard);
2162
2163         /*
2164          * Ignore sector if:
2165          * For type     3: ref & app tag is all 'f's
2166          * For type 0,1,2: app tag is all 'f's
2167          */
2168         if ((a_app_tag == T10_PI_APP_ESCAPE) &&
2169             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
2170              (a_ref_tag == T10_PI_REF_ESCAPE))) {
2171                 uint32_t blocks_done, resid;
2172                 sector_t lba_s = scsi_get_lba(cmd);
2173
2174                 /* 2TB boundary case covered automatically with this */
2175                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
2176
2177                 resid = scsi_bufflen(cmd) - (blocks_done *
2178                     cmd->device->sector_size);
2179
2180                 scsi_set_resid(cmd, resid);
2181                 cmd->result = DID_OK << 16;
2182
2183                 /* Update protection tag */
2184                 if (scsi_prot_sg_count(cmd)) {
2185                         uint32_t i, j = 0, k = 0, num_ent;
2186                         struct scatterlist *sg;
2187                         struct t10_pi_tuple *spt;
2188
2189                         /* Patch the corresponding protection tags */
2190                         scsi_for_each_prot_sg(cmd, sg,
2191                             scsi_prot_sg_count(cmd), i) {
2192                                 num_ent = sg_dma_len(sg) / 8;
2193                                 if (k + num_ent < blocks_done) {
2194                                         k += num_ent;
2195                                         continue;
2196                                 }
2197                                 j = blocks_done - k - 1;
2198                                 k = blocks_done;
2199                                 break;
2200                         }
2201
2202                         if (k != blocks_done) {
2203                                 ql_log(ql_log_warn, vha, 0x302f,
2204                                     "unexpected tag values tag:lba=%x:%llx)\n",
2205                                     e_ref_tag, (unsigned long long)lba_s);
2206                                 return 1;
2207                         }
2208
2209                         spt = page_address(sg_page(sg)) + sg->offset;
2210                         spt += j;
2211
2212                         spt->app_tag = T10_PI_APP_ESCAPE;
2213                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
2214                                 spt->ref_tag = T10_PI_REF_ESCAPE;
2215                 }
2216
2217                 return 0;
2218         }
2219
2220         /* check guard */
2221         if (e_guard != a_guard) {
2222                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2223                     0x10, 0x1);
2224                 set_driver_byte(cmd, DRIVER_SENSE);
2225                 set_host_byte(cmd, DID_ABORT);
2226                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2227                 return 1;
2228         }
2229
2230         /* check ref tag */
2231         if (e_ref_tag != a_ref_tag) {
2232                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2233                     0x10, 0x3);
2234                 set_driver_byte(cmd, DRIVER_SENSE);
2235                 set_host_byte(cmd, DID_ABORT);
2236                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2237                 return 1;
2238         }
2239
2240         /* check appl tag */
2241         if (e_app_tag != a_app_tag) {
2242                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2243                     0x10, 0x2);
2244                 set_driver_byte(cmd, DRIVER_SENSE);
2245                 set_host_byte(cmd, DID_ABORT);
2246                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2247                 return 1;
2248         }
2249
2250         return 1;
2251 }
2252
2253 static void
2254 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
2255                                   struct req_que *req, uint32_t index)
2256 {
2257         struct qla_hw_data *ha = vha->hw;
2258         srb_t *sp;
2259         uint16_t        comp_status;
2260         uint16_t        scsi_status;
2261         uint16_t thread_id;
2262         uint32_t rval = EXT_STATUS_OK;
2263         struct bsg_job *bsg_job = NULL;
2264         struct fc_bsg_request *bsg_request;
2265         struct fc_bsg_reply *bsg_reply;
2266         sts_entry_t *sts = pkt;
2267         struct sts_entry_24xx *sts24 = pkt;
2268
2269         /* Validate handle. */
2270         if (index >= req->num_outstanding_cmds) {
2271                 ql_log(ql_log_warn, vha, 0x70af,
2272                     "Invalid SCSI completion handle 0x%x.\n", index);
2273                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2274                 return;
2275         }
2276
2277         sp = req->outstanding_cmds[index];
2278         if (!sp) {
2279                 ql_log(ql_log_warn, vha, 0x70b0,
2280                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
2281                     req->id, index);
2282
2283                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2284                 return;
2285         }
2286
2287         /* Free outstanding command slot. */
2288         req->outstanding_cmds[index] = NULL;
2289         bsg_job = sp->u.bsg_job;
2290         bsg_request = bsg_job->request;
2291         bsg_reply = bsg_job->reply;
2292
2293         if (IS_FWI2_CAPABLE(ha)) {
2294                 comp_status = le16_to_cpu(sts24->comp_status);
2295                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2296         } else {
2297                 comp_status = le16_to_cpu(sts->comp_status);
2298                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2299         }
2300
2301         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
2302         switch (comp_status) {
2303         case CS_COMPLETE:
2304                 if (scsi_status == 0) {
2305                         bsg_reply->reply_payload_rcv_len =
2306                                         bsg_job->reply_payload.payload_len;
2307                         vha->qla_stats.input_bytes +=
2308                                 bsg_reply->reply_payload_rcv_len;
2309                         vha->qla_stats.input_requests++;
2310                         rval = EXT_STATUS_OK;
2311                 }
2312                 goto done;
2313
2314         case CS_DATA_OVERRUN:
2315                 ql_dbg(ql_dbg_user, vha, 0x70b1,
2316                     "Command completed with data overrun thread_id=%d\n",
2317                     thread_id);
2318                 rval = EXT_STATUS_DATA_OVERRUN;
2319                 break;
2320
2321         case CS_DATA_UNDERRUN:
2322                 ql_dbg(ql_dbg_user, vha, 0x70b2,
2323                     "Command completed with data underrun thread_id=%d\n",
2324                     thread_id);
2325                 rval = EXT_STATUS_DATA_UNDERRUN;
2326                 break;
2327         case CS_BIDIR_RD_OVERRUN:
2328                 ql_dbg(ql_dbg_user, vha, 0x70b3,
2329                     "Command completed with read data overrun thread_id=%d\n",
2330                     thread_id);
2331                 rval = EXT_STATUS_DATA_OVERRUN;
2332                 break;
2333
2334         case CS_BIDIR_RD_WR_OVERRUN:
2335                 ql_dbg(ql_dbg_user, vha, 0x70b4,
2336                     "Command completed with read and write data overrun "
2337                     "thread_id=%d\n", thread_id);
2338                 rval = EXT_STATUS_DATA_OVERRUN;
2339                 break;
2340
2341         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
2342                 ql_dbg(ql_dbg_user, vha, 0x70b5,
2343                     "Command completed with read data over and write data "
2344                     "underrun thread_id=%d\n", thread_id);
2345                 rval = EXT_STATUS_DATA_OVERRUN;
2346                 break;
2347
2348         case CS_BIDIR_RD_UNDERRUN:
2349                 ql_dbg(ql_dbg_user, vha, 0x70b6,
2350                     "Command completed with read data underrun "
2351                     "thread_id=%d\n", thread_id);
2352                 rval = EXT_STATUS_DATA_UNDERRUN;
2353                 break;
2354
2355         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2356                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2357                     "Command completed with read data under and write data "
2358                     "overrun thread_id=%d\n", thread_id);
2359                 rval = EXT_STATUS_DATA_UNDERRUN;
2360                 break;
2361
2362         case CS_BIDIR_RD_WR_UNDERRUN:
2363                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2364                     "Command completed with read and write data underrun "
2365                     "thread_id=%d\n", thread_id);
2366                 rval = EXT_STATUS_DATA_UNDERRUN;
2367                 break;
2368
2369         case CS_BIDIR_DMA:
2370                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2371                     "Command completed with data DMA error thread_id=%d\n",
2372                     thread_id);
2373                 rval = EXT_STATUS_DMA_ERR;
2374                 break;
2375
2376         case CS_TIMEOUT:
2377                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2378                     "Command completed with timeout thread_id=%d\n",
2379                     thread_id);
2380                 rval = EXT_STATUS_TIMEOUT;
2381                 break;
2382         default:
2383                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2384                     "Command completed with completion status=0x%x "
2385                     "thread_id=%d\n", comp_status, thread_id);
2386                 rval = EXT_STATUS_ERR;
2387                 break;
2388         }
2389         bsg_reply->reply_payload_rcv_len = 0;
2390
2391 done:
2392         /* Return the vendor specific reply to API */
2393         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2394         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2395         /* Always return DID_OK, bsg will send the vendor specific response
2396          * in this case only */
2397         sp->done(sp, DID_OK << 16);
2398
2399 }
2400
2401 /**
2402  * qla2x00_status_entry() - Process a Status IOCB entry.
2403  * @vha: SCSI driver HA context
2404  * @rsp: response queue
2405  * @pkt: Entry pointer
2406  */
2407 static void
2408 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2409 {
2410         srb_t           *sp;
2411         fc_port_t       *fcport;
2412         struct scsi_cmnd *cp;
2413         sts_entry_t *sts = pkt;
2414         struct sts_entry_24xx *sts24 = pkt;
2415         uint16_t        comp_status;
2416         uint16_t        scsi_status;
2417         uint16_t        ox_id;
2418         uint8_t         lscsi_status;
2419         int32_t         resid;
2420         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2421             fw_resid_len;
2422         uint8_t         *rsp_info, *sense_data;
2423         struct qla_hw_data *ha = vha->hw;
2424         uint32_t handle;
2425         uint16_t que;
2426         struct req_que *req;
2427         int logit = 1;
2428         int res = 0;
2429         uint16_t state_flags = 0;
2430         uint16_t retry_delay = 0;
2431
2432         if (IS_FWI2_CAPABLE(ha)) {
2433                 comp_status = le16_to_cpu(sts24->comp_status);
2434                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2435                 state_flags = le16_to_cpu(sts24->state_flags);
2436         } else {
2437                 comp_status = le16_to_cpu(sts->comp_status);
2438                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2439         }
2440         handle = (uint32_t) LSW(sts->handle);
2441         que = MSW(sts->handle);
2442         req = ha->req_q_map[que];
2443
2444         /* Check for invalid queue pointer */
2445         if (req == NULL ||
2446             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2447                 ql_dbg(ql_dbg_io, vha, 0x3059,
2448                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2449                     "que=%u.\n", sts->handle, req, que);
2450                 return;
2451         }
2452
2453         /* Validate handle. */
2454         if (handle < req->num_outstanding_cmds) {
2455                 sp = req->outstanding_cmds[handle];
2456                 if (!sp) {
2457                         ql_dbg(ql_dbg_io, vha, 0x3075,
2458                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2459                             __func__, vha->host_no, sts->handle);
2460                         return;
2461                 }
2462         } else {
2463                 ql_dbg(ql_dbg_io, vha, 0x3017,
2464                     "Invalid status handle, out of range (0x%x).\n",
2465                     sts->handle);
2466
2467                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2468                         if (IS_P3P_TYPE(ha))
2469                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2470                         else
2471                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2472                         qla2xxx_wake_dpc(vha);
2473                 }
2474                 return;
2475         }
2476
2477         if (sp->abort)
2478                 sp->aborted = 1;
2479         else
2480                 sp->completed = 1;
2481
2482         if (sp->cmd_type != TYPE_SRB) {
2483                 req->outstanding_cmds[handle] = NULL;
2484                 ql_dbg(ql_dbg_io, vha, 0x3015,
2485                     "Unknown sp->cmd_type %x %p).\n",
2486                     sp->cmd_type, sp);
2487                 return;
2488         }
2489
2490         /* NVME completion. */
2491         if (sp->type == SRB_NVME_CMD) {
2492                 req->outstanding_cmds[handle] = NULL;
2493                 qla24xx_nvme_iocb_entry(vha, req, pkt, sp);
2494                 return;
2495         }
2496
2497         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2498                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2499                 return;
2500         }
2501
2502         /* Task Management completion. */
2503         if (sp->type == SRB_TM_CMD) {
2504                 qla24xx_tm_iocb_entry(vha, req, pkt);
2505                 return;
2506         }
2507
2508         /* Fast path completion. */
2509         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2510                 qla2x00_process_completed_request(vha, req, handle);
2511
2512                 return;
2513         }
2514
2515         req->outstanding_cmds[handle] = NULL;
2516         cp = GET_CMD_SP(sp);
2517         if (cp == NULL) {
2518                 ql_dbg(ql_dbg_io, vha, 0x3018,
2519                     "Command already returned (0x%x/%p).\n",
2520                     sts->handle, sp);
2521
2522                 return;
2523         }
2524
2525         lscsi_status = scsi_status & STATUS_MASK;
2526
2527         fcport = sp->fcport;
2528
2529         ox_id = 0;
2530         sense_len = par_sense_len = rsp_info_len = resid_len =
2531             fw_resid_len = 0;
2532         if (IS_FWI2_CAPABLE(ha)) {
2533                 if (scsi_status & SS_SENSE_LEN_VALID)
2534                         sense_len = le32_to_cpu(sts24->sense_len);
2535                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2536                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2537                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2538                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2539                 if (comp_status == CS_DATA_UNDERRUN)
2540                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2541                 rsp_info = sts24->data;
2542                 sense_data = sts24->data;
2543                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2544                 ox_id = le16_to_cpu(sts24->ox_id);
2545                 par_sense_len = sizeof(sts24->data);
2546                 /* Valid values of the retry delay timer are 0x1-0xffef */
2547                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1) {
2548                         retry_delay = sts24->retry_delay & 0x3fff;
2549                         ql_dbg(ql_dbg_io, sp->vha, 0x3033,
2550                             "%s: scope=%#x retry_delay=%#x\n", __func__,
2551                             sts24->retry_delay >> 14, retry_delay);
2552                 }
2553         } else {
2554                 if (scsi_status & SS_SENSE_LEN_VALID)
2555                         sense_len = le16_to_cpu(sts->req_sense_length);
2556                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2557                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2558                 resid_len = le32_to_cpu(sts->residual_length);
2559                 rsp_info = sts->rsp_info;
2560                 sense_data = sts->req_sense_data;
2561                 par_sense_len = sizeof(sts->req_sense_data);
2562         }
2563
2564         /* Check for any FCP transport errors. */
2565         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2566                 /* Sense data lies beyond any FCP RESPONSE data. */
2567                 if (IS_FWI2_CAPABLE(ha)) {
2568                         sense_data += rsp_info_len;
2569                         par_sense_len -= rsp_info_len;
2570                 }
2571                 if (rsp_info_len > 3 && rsp_info[3]) {
2572                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2573                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2574                             rsp_info_len, rsp_info[3]);
2575
2576                         res = DID_BUS_BUSY << 16;
2577                         goto out;
2578                 }
2579         }
2580
2581         /* Check for overrun. */
2582         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2583             scsi_status & SS_RESIDUAL_OVER)
2584                 comp_status = CS_DATA_OVERRUN;
2585
2586         /*
2587          * Check retry_delay_timer value if we receive a busy or
2588          * queue full.
2589          */
2590         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2591             lscsi_status == SAM_STAT_BUSY)
2592                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2593
2594         /*
2595          * Based on Host and scsi status generate status code for Linux
2596          */
2597         switch (comp_status) {
2598         case CS_COMPLETE:
2599         case CS_QUEUE_FULL:
2600                 if (scsi_status == 0) {
2601                         res = DID_OK << 16;
2602                         break;
2603                 }
2604                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2605                         resid = resid_len;
2606                         scsi_set_resid(cp, resid);
2607
2608                         if (!lscsi_status &&
2609                             ((unsigned)(scsi_bufflen(cp) - resid) <
2610                              cp->underflow)) {
2611                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2612                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2613                                     resid, scsi_bufflen(cp));
2614
2615                                 res = DID_ERROR << 16;
2616                                 break;
2617                         }
2618                 }
2619                 res = DID_OK << 16 | lscsi_status;
2620
2621                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2622                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2623                             "QUEUE FULL detected.\n");
2624                         break;
2625                 }
2626                 logit = 0;
2627                 if (lscsi_status != SS_CHECK_CONDITION)
2628                         break;
2629
2630                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2631                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2632                         break;
2633
2634                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2635                     rsp, res);
2636                 break;
2637
2638         case CS_DATA_UNDERRUN:
2639                 /* Use F/W calculated residual length. */
2640                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2641                 scsi_set_resid(cp, resid);
2642                 if (scsi_status & SS_RESIDUAL_UNDER) {
2643                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2644                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2645                                     "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2646                                     resid, scsi_bufflen(cp));
2647
2648                                 res = DID_ERROR << 16 | lscsi_status;
2649                                 goto check_scsi_status;
2650                         }
2651
2652                         if (!lscsi_status &&
2653                             ((unsigned)(scsi_bufflen(cp) - resid) <
2654                             cp->underflow)) {
2655                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2656                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2657                                     resid, scsi_bufflen(cp));
2658
2659                                 res = DID_ERROR << 16;
2660                                 break;
2661                         }
2662                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2663                             lscsi_status != SAM_STAT_BUSY) {
2664                         /*
2665                          * scsi status of task set and busy are considered to be
2666                          * task not completed.
2667                          */
2668
2669                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2670                             "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2671                             resid, scsi_bufflen(cp));
2672
2673                         res = DID_ERROR << 16 | lscsi_status;
2674                         goto check_scsi_status;
2675                 } else {
2676                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2677                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2678                             scsi_status, lscsi_status);
2679                 }
2680
2681                 res = DID_OK << 16 | lscsi_status;
2682                 logit = 0;
2683
2684 check_scsi_status:
2685                 /*
2686                  * Check to see if SCSI Status is non zero. If so report SCSI
2687                  * Status.
2688                  */
2689                 if (lscsi_status != 0) {
2690                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2691                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2692                                     "QUEUE FULL detected.\n");
2693                                 logit = 1;
2694                                 break;
2695                         }
2696                         if (lscsi_status != SS_CHECK_CONDITION)
2697                                 break;
2698
2699                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2700                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2701                                 break;
2702
2703                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2704                             sense_len, rsp, res);
2705                 }
2706                 break;
2707
2708         case CS_PORT_LOGGED_OUT:
2709         case CS_PORT_CONFIG_CHG:
2710         case CS_PORT_BUSY:
2711         case CS_INCOMPLETE:
2712         case CS_PORT_UNAVAILABLE:
2713         case CS_TIMEOUT:
2714         case CS_RESET:
2715
2716                 /*
2717                  * We are going to have the fc class block the rport
2718                  * while we try to recover so instruct the mid layer
2719                  * to requeue until the class decides how to handle this.
2720                  */
2721                 res = DID_TRANSPORT_DISRUPTED << 16;
2722
2723                 if (comp_status == CS_TIMEOUT) {
2724                         if (IS_FWI2_CAPABLE(ha))
2725                                 break;
2726                         else if ((le16_to_cpu(sts->status_flags) &
2727                             SF_LOGOUT_SENT) == 0)
2728                                 break;
2729                 }
2730
2731                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
2732                         ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
2733                                 "Port to be marked lost on fcport=%02x%02x%02x, current "
2734                                 "port state= %s comp_status %x.\n", fcport->d_id.b.domain,
2735                                 fcport->d_id.b.area, fcport->d_id.b.al_pa,
2736                                 port_state_str[FCS_ONLINE],
2737                                 comp_status);
2738
2739                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2740                         qlt_schedule_sess_for_deletion(fcport);
2741                 }
2742
2743                 break;
2744
2745         case CS_ABORTED:
2746                 res = DID_RESET << 16;
2747                 break;
2748
2749         case CS_DIF_ERROR:
2750                 logit = qla2x00_handle_dif_error(sp, sts24);
2751                 res = cp->result;
2752                 break;
2753
2754         case CS_TRANSPORT:
2755                 res = DID_ERROR << 16;
2756
2757                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2758                         break;
2759
2760                 if (state_flags & BIT_4)
2761                         scmd_printk(KERN_WARNING, cp,
2762                             "Unsupported device '%s' found.\n",
2763                             cp->device->vendor);
2764                 break;
2765
2766         case CS_DMA:
2767                 ql_log(ql_log_info, fcport->vha, 0x3022,
2768                     "CS_DMA error: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu portid=%06x oxid=0x%x cdb=%10phN len=0x%x rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2769                     comp_status, scsi_status, res, vha->host_no,
2770                     cp->device->id, cp->device->lun, fcport->d_id.b24,
2771                     ox_id, cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2772                     resid_len, fw_resid_len, sp, cp);
2773                 ql_dump_buffer(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe0ee,
2774                     pkt, sizeof(*sts24));
2775                 res = DID_ERROR << 16;
2776                 break;
2777         default:
2778                 res = DID_ERROR << 16;
2779                 break;
2780         }
2781
2782 out:
2783         if (logit)
2784                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2785                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2786                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2787                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2788                     comp_status, scsi_status, res, vha->host_no,
2789                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2790                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2791                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2792                     resid_len, fw_resid_len, sp, cp);
2793
2794         if (rsp->status_srb == NULL)
2795                 sp->done(sp, res);
2796 }
2797
2798 /**
2799  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2800  * @rsp: response queue
2801  * @pkt: Entry pointer
2802  *
2803  * Extended sense data.
2804  */
2805 static void
2806 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2807 {
2808         uint8_t sense_sz = 0;
2809         struct qla_hw_data *ha = rsp->hw;
2810         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2811         srb_t *sp = rsp->status_srb;
2812         struct scsi_cmnd *cp;
2813         uint32_t sense_len;
2814         uint8_t *sense_ptr;
2815
2816         if (!sp || !GET_CMD_SENSE_LEN(sp))
2817                 return;
2818
2819         sense_len = GET_CMD_SENSE_LEN(sp);
2820         sense_ptr = GET_CMD_SENSE_PTR(sp);
2821
2822         cp = GET_CMD_SP(sp);
2823         if (cp == NULL) {
2824                 ql_log(ql_log_warn, vha, 0x3025,
2825                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2826
2827                 rsp->status_srb = NULL;
2828                 return;
2829         }
2830
2831         if (sense_len > sizeof(pkt->data))
2832                 sense_sz = sizeof(pkt->data);
2833         else
2834                 sense_sz = sense_len;
2835
2836         /* Move sense data. */
2837         if (IS_FWI2_CAPABLE(ha))
2838                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2839         memcpy(sense_ptr, pkt->data, sense_sz);
2840         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2841                 sense_ptr, sense_sz);
2842
2843         sense_len -= sense_sz;
2844         sense_ptr += sense_sz;
2845
2846         SET_CMD_SENSE_PTR(sp, sense_ptr);
2847         SET_CMD_SENSE_LEN(sp, sense_len);
2848
2849         /* Place command on done queue. */
2850         if (sense_len == 0) {
2851                 rsp->status_srb = NULL;
2852                 sp->done(sp, cp->result);
2853         }
2854 }
2855
2856 /**
2857  * qla2x00_error_entry() - Process an error entry.
2858  * @vha: SCSI driver HA context
2859  * @rsp: response queue
2860  * @pkt: Entry pointer
2861  * return : 1=allow further error analysis. 0=no additional error analysis.
2862  */
2863 static int
2864 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2865 {
2866         srb_t *sp;
2867         struct qla_hw_data *ha = vha->hw;
2868         const char func[] = "ERROR-IOCB";
2869         uint16_t que = MSW(pkt->handle);
2870         struct req_que *req = NULL;
2871         int res = DID_ERROR << 16;
2872
2873         ql_dbg(ql_dbg_async, vha, 0x502a,
2874             "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
2875             pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
2876
2877         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2878                 goto fatal;
2879
2880         req = ha->req_q_map[que];
2881
2882         if (pkt->entry_status & RF_BUSY)
2883                 res = DID_BUS_BUSY << 16;
2884
2885         if ((pkt->handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE)
2886                 return 0;
2887
2888         switch (pkt->entry_type) {
2889         case NOTIFY_ACK_TYPE:
2890         case STATUS_TYPE:
2891         case STATUS_CONT_TYPE:
2892         case LOGINOUT_PORT_IOCB_TYPE:
2893         case CT_IOCB_TYPE:
2894         case ELS_IOCB_TYPE:
2895         case ABORT_IOCB_TYPE:
2896         case MBX_IOCB_TYPE:
2897         default:
2898                 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2899                 if (sp) {
2900                         sp->done(sp, res);
2901                         return 0;
2902                 }
2903                 break;
2904
2905         case ABTS_RESP_24XX:
2906         case CTIO_TYPE7:
2907         case CTIO_CRC2:
2908                 return 1;
2909         }
2910 fatal:
2911         ql_log(ql_log_warn, vha, 0x5030,
2912             "Error entry - invalid handle/queue (%04x).\n", que);
2913         return 0;
2914 }
2915
2916 /**
2917  * qla24xx_mbx_completion() - Process mailbox command completions.
2918  * @vha: SCSI driver HA context
2919  * @mb0: Mailbox0 register
2920  */
2921 static void
2922 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2923 {
2924         uint16_t        cnt;
2925         uint32_t        mboxes;
2926         uint16_t __iomem *wptr;
2927         struct qla_hw_data *ha = vha->hw;
2928         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2929
2930         /* Read all mbox registers? */
2931         WARN_ON_ONCE(ha->mbx_count > 32);
2932         mboxes = (1ULL << ha->mbx_count) - 1;
2933         if (!ha->mcp)
2934                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2935         else
2936                 mboxes = ha->mcp->in_mb;
2937
2938         /* Load return mailbox registers. */
2939         ha->flags.mbox_int = 1;
2940         ha->mailbox_out[0] = mb0;
2941         mboxes >>= 1;
2942         wptr = (uint16_t __iomem *)&reg->mailbox1;
2943
2944         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2945                 if (mboxes & BIT_0)
2946                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2947
2948                 mboxes >>= 1;
2949                 wptr++;
2950         }
2951 }
2952
2953 static void
2954 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2955         struct abort_entry_24xx *pkt)
2956 {
2957         const char func[] = "ABT_IOCB";
2958         srb_t *sp;
2959         struct srb_iocb *abt;
2960
2961         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2962         if (!sp)
2963                 return;
2964
2965         abt = &sp->u.iocb_cmd;
2966         abt->u.abt.comp_status = le16_to_cpu(pkt->nport_handle);
2967         sp->done(sp, 0);
2968 }
2969
2970 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
2971     struct pt_ls4_request *pkt, struct req_que *req)
2972 {
2973         srb_t *sp;
2974         const char func[] = "LS4_IOCB";
2975         uint16_t comp_status;
2976
2977         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2978         if (!sp)
2979                 return;
2980
2981         comp_status = le16_to_cpu(pkt->status);
2982         sp->done(sp, comp_status);
2983 }
2984
2985 /**
2986  * qla24xx_process_response_queue() - Process response queue entries.
2987  * @vha: SCSI driver HA context
2988  * @rsp: response queue
2989  */
2990 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2991         struct rsp_que *rsp)
2992 {
2993         struct sts_entry_24xx *pkt;
2994         struct qla_hw_data *ha = vha->hw;
2995
2996         if (!ha->flags.fw_started)
2997                 return;
2998
2999         if (rsp->qpair->cpuid != smp_processor_id())
3000                 qla_cpu_update(rsp->qpair, smp_processor_id());
3001
3002         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
3003                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
3004
3005                 rsp->ring_index++;
3006                 if (rsp->ring_index == rsp->length) {
3007                         rsp->ring_index = 0;
3008                         rsp->ring_ptr = rsp->ring;
3009                 } else {
3010                         rsp->ring_ptr++;
3011                 }
3012
3013                 if (pkt->entry_status != 0) {
3014                         if (qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt))
3015                                 goto process_err;
3016
3017                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3018                         wmb();
3019                         continue;
3020                 }
3021 process_err:
3022
3023                 switch (pkt->entry_type) {
3024                 case STATUS_TYPE:
3025                         qla2x00_status_entry(vha, rsp, pkt);
3026                         break;
3027                 case STATUS_CONT_TYPE:
3028                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
3029                         break;
3030                 case VP_RPT_ID_IOCB_TYPE:
3031                         qla24xx_report_id_acquisition(vha,
3032                             (struct vp_rpt_id_entry_24xx *)pkt);
3033                         break;
3034                 case LOGINOUT_PORT_IOCB_TYPE:
3035                         qla24xx_logio_entry(vha, rsp->req,
3036                             (struct logio_entry_24xx *)pkt);
3037                         break;
3038                 case CT_IOCB_TYPE:
3039                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
3040                         break;
3041                 case ELS_IOCB_TYPE:
3042                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
3043                         break;
3044                 case ABTS_RECV_24XX:
3045                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
3046                             IS_QLA28XX(ha)) {
3047                                 /* ensure that the ATIO queue is empty */
3048                                 qlt_handle_abts_recv(vha, rsp,
3049                                     (response_t *)pkt);
3050                                 break;
3051                         } else {
3052                                 qlt_24xx_process_atio_queue(vha, 1);
3053                         }
3054                         /* fall through */
3055                 case ABTS_RESP_24XX:
3056                 case CTIO_TYPE7:
3057                 case CTIO_CRC2:
3058                         qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
3059                         break;
3060                 case PT_LS4_REQUEST:
3061                         qla24xx_nvme_ls4_iocb(vha, (struct pt_ls4_request *)pkt,
3062                             rsp->req);
3063                         break;
3064                 case NOTIFY_ACK_TYPE:
3065                         if (pkt->handle == QLA_TGT_SKIP_HANDLE)
3066                                 qlt_response_pkt_all_vps(vha, rsp,
3067                                     (response_t *)pkt);
3068                         else
3069                                 qla24xxx_nack_iocb_entry(vha, rsp->req,
3070                                         (struct nack_to_isp *)pkt);
3071                         break;
3072                 case MARKER_TYPE:
3073                         /* Do nothing in this case, this check is to prevent it
3074                          * from falling into default case
3075                          */
3076                         break;
3077                 case ABORT_IOCB_TYPE:
3078                         qla24xx_abort_iocb_entry(vha, rsp->req,
3079                             (struct abort_entry_24xx *)pkt);
3080                         break;
3081                 case MBX_IOCB_TYPE:
3082                         qla24xx_mbx_iocb_entry(vha, rsp->req,
3083                             (struct mbx_24xx_entry *)pkt);
3084                         break;
3085                 case VP_CTRL_IOCB_TYPE:
3086                         qla_ctrlvp_completed(vha, rsp->req,
3087                             (struct vp_ctrl_entry_24xx *)pkt);
3088                         break;
3089                 default:
3090                         /* Type Not Supported. */
3091                         ql_dbg(ql_dbg_async, vha, 0x5042,
3092                             "Received unknown response pkt type %x "
3093                             "entry status=%x.\n",
3094                             pkt->entry_type, pkt->entry_status);
3095                         break;
3096                 }
3097                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3098                 wmb();
3099         }
3100
3101         /* Adjust ring index */
3102         if (IS_P3P_TYPE(ha)) {
3103                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
3104
3105                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
3106         } else {
3107                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
3108         }
3109 }
3110
3111 static void
3112 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
3113 {
3114         int rval;
3115         uint32_t cnt;
3116         struct qla_hw_data *ha = vha->hw;
3117         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3118
3119         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
3120             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3121                 return;
3122
3123         rval = QLA_SUCCESS;
3124         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
3125         RD_REG_DWORD(&reg->iobase_addr);
3126         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3127         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3128             rval == QLA_SUCCESS; cnt--) {
3129                 if (cnt) {
3130                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3131                         udelay(10);
3132                 } else
3133                         rval = QLA_FUNCTION_TIMEOUT;
3134         }
3135         if (rval == QLA_SUCCESS)
3136                 goto next_test;
3137
3138         rval = QLA_SUCCESS;
3139         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3140         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3141             rval == QLA_SUCCESS; cnt--) {
3142                 if (cnt) {
3143                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3144                         udelay(10);
3145                 } else
3146                         rval = QLA_FUNCTION_TIMEOUT;
3147         }
3148         if (rval != QLA_SUCCESS)
3149                 goto done;
3150
3151 next_test:
3152         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
3153                 ql_log(ql_log_info, vha, 0x504c,
3154                     "Additional code -- 0x55AA.\n");
3155
3156 done:
3157         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
3158         RD_REG_DWORD(&reg->iobase_window);
3159 }
3160
3161 /**
3162  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
3163  * @irq: interrupt number
3164  * @dev_id: SCSI driver HA context
3165  *
3166  * Called by system whenever the host adapter generates an interrupt.
3167  *
3168  * Returns handled flag.
3169  */
3170 irqreturn_t
3171 qla24xx_intr_handler(int irq, void *dev_id)
3172 {
3173         scsi_qla_host_t *vha;
3174         struct qla_hw_data *ha;
3175         struct device_reg_24xx __iomem *reg;
3176         int             status;
3177         unsigned long   iter;
3178         uint32_t        stat;
3179         uint32_t        hccr;
3180         uint16_t        mb[8];
3181         struct rsp_que *rsp;
3182         unsigned long   flags;
3183         bool process_atio = false;
3184
3185         rsp = (struct rsp_que *) dev_id;
3186         if (!rsp) {
3187                 ql_log(ql_log_info, NULL, 0x5059,
3188                     "%s: NULL response queue pointer.\n", __func__);
3189                 return IRQ_NONE;
3190         }
3191
3192         ha = rsp->hw;
3193         reg = &ha->iobase->isp24;
3194         status = 0;
3195
3196         if (unlikely(pci_channel_offline(ha->pdev)))
3197                 return IRQ_HANDLED;
3198
3199         spin_lock_irqsave(&ha->hardware_lock, flags);
3200         vha = pci_get_drvdata(ha->pdev);
3201         for (iter = 50; iter--; ) {
3202                 stat = RD_REG_DWORD(&reg->host_status);
3203                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3204                         break;
3205                 if (stat & HSRX_RISC_PAUSED) {
3206                         if (unlikely(pci_channel_offline(ha->pdev)))
3207                                 break;
3208
3209                         hccr = RD_REG_DWORD(&reg->hccr);
3210
3211                         ql_log(ql_log_warn, vha, 0x504b,
3212                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3213                             hccr);
3214
3215                         qla2xxx_check_risc_status(vha);
3216
3217                         ha->isp_ops->fw_dump(vha, 1);
3218                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3219                         break;
3220                 } else if ((stat & HSRX_RISC_INT) == 0)
3221                         break;
3222
3223                 switch (stat & 0xff) {
3224                 case INTR_ROM_MB_SUCCESS:
3225                 case INTR_ROM_MB_FAILED:
3226                 case INTR_MB_SUCCESS:
3227                 case INTR_MB_FAILED:
3228                         qla24xx_mbx_completion(vha, MSW(stat));
3229                         status |= MBX_INTERRUPT;
3230
3231                         break;
3232                 case INTR_ASYNC_EVENT:
3233                         mb[0] = MSW(stat);
3234                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3235                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3236                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3237                         qla2x00_async_event(vha, rsp, mb);
3238                         break;
3239                 case INTR_RSP_QUE_UPDATE:
3240                 case INTR_RSP_QUE_UPDATE_83XX:
3241                         qla24xx_process_response_queue(vha, rsp);
3242                         break;
3243                 case INTR_ATIO_QUE_UPDATE_27XX:
3244                 case INTR_ATIO_QUE_UPDATE:
3245                         process_atio = true;
3246                         break;
3247                 case INTR_ATIO_RSP_QUE_UPDATE:
3248                         process_atio = true;
3249                         qla24xx_process_response_queue(vha, rsp);
3250                         break;
3251                 default:
3252                         ql_dbg(ql_dbg_async, vha, 0x504f,
3253                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
3254                         break;
3255                 }
3256                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3257                 RD_REG_DWORD_RELAXED(&reg->hccr);
3258                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
3259                         ndelay(3500);
3260         }
3261         qla2x00_handle_mbx_completion(ha, status);
3262         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3263
3264         if (process_atio) {
3265                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3266                 qlt_24xx_process_atio_queue(vha, 0);
3267                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3268         }
3269
3270         return IRQ_HANDLED;
3271 }
3272
3273 static irqreturn_t
3274 qla24xx_msix_rsp_q(int irq, void *dev_id)
3275 {
3276         struct qla_hw_data *ha;
3277         struct rsp_que *rsp;
3278         struct device_reg_24xx __iomem *reg;
3279         struct scsi_qla_host *vha;
3280         unsigned long flags;
3281
3282         rsp = (struct rsp_que *) dev_id;
3283         if (!rsp) {
3284                 ql_log(ql_log_info, NULL, 0x505a,
3285                     "%s: NULL response queue pointer.\n", __func__);
3286                 return IRQ_NONE;
3287         }
3288         ha = rsp->hw;
3289         reg = &ha->iobase->isp24;
3290
3291         spin_lock_irqsave(&ha->hardware_lock, flags);
3292
3293         vha = pci_get_drvdata(ha->pdev);
3294         qla24xx_process_response_queue(vha, rsp);
3295         if (!ha->flags.disable_msix_handshake) {
3296                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3297                 RD_REG_DWORD_RELAXED(&reg->hccr);
3298         }
3299         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3300
3301         return IRQ_HANDLED;
3302 }
3303
3304 static irqreturn_t
3305 qla24xx_msix_default(int irq, void *dev_id)
3306 {
3307         scsi_qla_host_t *vha;
3308         struct qla_hw_data *ha;
3309         struct rsp_que *rsp;
3310         struct device_reg_24xx __iomem *reg;
3311         int             status;
3312         uint32_t        stat;
3313         uint32_t        hccr;
3314         uint16_t        mb[8];
3315         unsigned long flags;
3316         bool process_atio = false;
3317
3318         rsp = (struct rsp_que *) dev_id;
3319         if (!rsp) {
3320                 ql_log(ql_log_info, NULL, 0x505c,
3321                     "%s: NULL response queue pointer.\n", __func__);
3322                 return IRQ_NONE;
3323         }
3324         ha = rsp->hw;
3325         reg = &ha->iobase->isp24;
3326         status = 0;
3327
3328         spin_lock_irqsave(&ha->hardware_lock, flags);
3329         vha = pci_get_drvdata(ha->pdev);
3330         do {
3331                 stat = RD_REG_DWORD(&reg->host_status);
3332                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3333                         break;
3334                 if (stat & HSRX_RISC_PAUSED) {
3335                         if (unlikely(pci_channel_offline(ha->pdev)))
3336                                 break;
3337
3338                         hccr = RD_REG_DWORD(&reg->hccr);
3339
3340                         ql_log(ql_log_info, vha, 0x5050,
3341                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3342                             hccr);
3343
3344                         qla2xxx_check_risc_status(vha);
3345
3346                         ha->isp_ops->fw_dump(vha, 1);
3347                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3348                         break;
3349                 } else if ((stat & HSRX_RISC_INT) == 0)
3350                         break;
3351
3352                 switch (stat & 0xff) {
3353                 case INTR_ROM_MB_SUCCESS:
3354                 case INTR_ROM_MB_FAILED:
3355                 case INTR_MB_SUCCESS:
3356                 case INTR_MB_FAILED:
3357                         qla24xx_mbx_completion(vha, MSW(stat));
3358                         status |= MBX_INTERRUPT;
3359
3360                         break;
3361                 case INTR_ASYNC_EVENT:
3362                         mb[0] = MSW(stat);
3363                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3364                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3365                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3366                         qla2x00_async_event(vha, rsp, mb);
3367                         break;
3368                 case INTR_RSP_QUE_UPDATE:
3369                 case INTR_RSP_QUE_UPDATE_83XX:
3370                         qla24xx_process_response_queue(vha, rsp);
3371                         break;
3372                 case INTR_ATIO_QUE_UPDATE_27XX:
3373                 case INTR_ATIO_QUE_UPDATE:
3374                         process_atio = true;
3375                         break;
3376                 case INTR_ATIO_RSP_QUE_UPDATE:
3377                         process_atio = true;
3378                         qla24xx_process_response_queue(vha, rsp);
3379                         break;
3380                 default:
3381                         ql_dbg(ql_dbg_async, vha, 0x5051,
3382                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
3383                         break;
3384                 }
3385                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3386         } while (0);
3387         qla2x00_handle_mbx_completion(ha, status);
3388         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3389
3390         if (process_atio) {
3391                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3392                 qlt_24xx_process_atio_queue(vha, 0);
3393                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3394         }
3395
3396         return IRQ_HANDLED;
3397 }
3398
3399 irqreturn_t
3400 qla2xxx_msix_rsp_q(int irq, void *dev_id)
3401 {
3402         struct qla_hw_data *ha;
3403         struct qla_qpair *qpair;
3404         struct device_reg_24xx __iomem *reg;
3405         unsigned long flags;
3406
3407         qpair = dev_id;
3408         if (!qpair) {
3409                 ql_log(ql_log_info, NULL, 0x505b,
3410                     "%s: NULL response queue pointer.\n", __func__);
3411                 return IRQ_NONE;
3412         }
3413         ha = qpair->hw;
3414
3415         /* Clear the interrupt, if enabled, for this response queue */
3416         if (unlikely(!ha->flags.disable_msix_handshake)) {
3417                 reg = &ha->iobase->isp24;
3418                 spin_lock_irqsave(&ha->hardware_lock, flags);
3419                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3420                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3421         }
3422
3423         queue_work(ha->wq, &qpair->q_work);
3424
3425         return IRQ_HANDLED;
3426 }
3427
3428 /* Interrupt handling helpers. */
3429
3430 struct qla_init_msix_entry {
3431         const char *name;
3432         irq_handler_t handler;
3433 };
3434
3435 static const struct qla_init_msix_entry msix_entries[] = {
3436         { "default", qla24xx_msix_default },
3437         { "rsp_q", qla24xx_msix_rsp_q },
3438         { "atio_q", qla83xx_msix_atio_q },
3439         { "qpair_multiq", qla2xxx_msix_rsp_q },
3440 };
3441
3442 static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
3443         { "qla2xxx (default)", qla82xx_msix_default },
3444         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3445 };
3446
3447 static int
3448 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3449 {
3450         int i, ret;
3451         struct qla_msix_entry *qentry;
3452         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3453         int min_vecs = QLA_BASE_VECTORS;
3454         struct irq_affinity desc = {
3455                 .pre_vectors = QLA_BASE_VECTORS,
3456         };
3457
3458         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3459             IS_ATIO_MSIX_CAPABLE(ha)) {
3460                 desc.pre_vectors++;
3461                 min_vecs++;
3462         }
3463
3464         if (USER_CTRL_IRQ(ha) || !ha->mqiobase) {
3465                 /* user wants to control IRQ setting for target mode */
3466                 ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
3467                     ha->msix_count, PCI_IRQ_MSIX);
3468         } else
3469                 ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
3470                     ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3471                     &desc);
3472
3473         if (ret < 0) {
3474                 ql_log(ql_log_fatal, vha, 0x00c7,
3475                     "MSI-X: Failed to enable support, "
3476                     "giving   up -- %d/%d.\n",
3477                     ha->msix_count, ret);
3478                 goto msix_out;
3479         } else if (ret < ha->msix_count) {
3480                 ql_log(ql_log_info, vha, 0x00c6,
3481                     "MSI-X: Using %d vectors\n", ret);
3482                 ha->msix_count = ret;
3483                 /* Recalculate queue values */
3484                 if (ha->mqiobase && (ql2xmqsupport || ql2xnvmeenable)) {
3485                         ha->max_req_queues = ha->msix_count - 1;
3486
3487                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3488                         if (QLA_TGT_MODE_ENABLED())
3489                                 ha->max_req_queues--;
3490
3491                         ha->max_rsp_queues = ha->max_req_queues;
3492
3493                         ha->max_qpairs = ha->max_req_queues - 1;
3494                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3495                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3496                 }
3497         }
3498         vha->irq_offset = desc.pre_vectors;
3499         ha->msix_entries = kcalloc(ha->msix_count,
3500                                    sizeof(struct qla_msix_entry),
3501                                    GFP_KERNEL);
3502         if (!ha->msix_entries) {
3503                 ql_log(ql_log_fatal, vha, 0x00c8,
3504                     "Failed to allocate memory for ha->msix_entries.\n");
3505                 ret = -ENOMEM;
3506                 goto free_irqs;
3507         }
3508         ha->flags.msix_enabled = 1;
3509
3510         for (i = 0; i < ha->msix_count; i++) {
3511                 qentry = &ha->msix_entries[i];
3512                 qentry->vector = pci_irq_vector(ha->pdev, i);
3513                 qentry->entry = i;
3514                 qentry->have_irq = 0;
3515                 qentry->in_use = 0;
3516                 qentry->handle = NULL;
3517         }
3518
3519         /* Enable MSI-X vectors for the base queue */
3520         for (i = 0; i < QLA_BASE_VECTORS; i++) {
3521                 qentry = &ha->msix_entries[i];
3522                 qentry->handle = rsp;
3523                 rsp->msix = qentry;
3524                 scnprintf(qentry->name, sizeof(qentry->name),
3525                     "qla2xxx%lu_%s", vha->host_no, msix_entries[i].name);
3526                 if (IS_P3P_TYPE(ha))
3527                         ret = request_irq(qentry->vector,
3528                                 qla82xx_msix_entries[i].handler,
3529                                 0, qla82xx_msix_entries[i].name, rsp);
3530                 else
3531                         ret = request_irq(qentry->vector,
3532                                 msix_entries[i].handler,
3533                                 0, qentry->name, rsp);
3534                 if (ret)
3535                         goto msix_register_fail;
3536                 qentry->have_irq = 1;
3537                 qentry->in_use = 1;
3538         }
3539
3540         /*
3541          * If target mode is enable, also request the vector for the ATIO
3542          * queue.
3543          */
3544         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3545             IS_ATIO_MSIX_CAPABLE(ha)) {
3546                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
3547                 rsp->msix = qentry;
3548                 qentry->handle = rsp;
3549                 scnprintf(qentry->name, sizeof(qentry->name),
3550                     "qla2xxx%lu_%s", vha->host_no,
3551                     msix_entries[QLA_ATIO_VECTOR].name);
3552                 qentry->in_use = 1;
3553                 ret = request_irq(qentry->vector,
3554                         msix_entries[QLA_ATIO_VECTOR].handler,
3555                         0, qentry->name, rsp);
3556                 qentry->have_irq = 1;
3557         }
3558
3559 msix_register_fail:
3560         if (ret) {
3561                 ql_log(ql_log_fatal, vha, 0x00cb,
3562                     "MSI-X: unable to register handler -- %x/%d.\n",
3563                     qentry->vector, ret);
3564                 qla2x00_free_irqs(vha);
3565                 ha->mqenable = 0;
3566                 goto msix_out;
3567         }
3568
3569         /* Enable MSI-X vector for response queue update for queue 0 */
3570         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
3571                 if (ha->msixbase && ha->mqiobase &&
3572                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3573                      ql2xmqsupport))
3574                         ha->mqenable = 1;
3575         } else
3576                 if (ha->mqiobase &&
3577                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3578                      ql2xmqsupport))
3579                         ha->mqenable = 1;
3580         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3581             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3582             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3583         ql_dbg(ql_dbg_init, vha, 0x0055,
3584             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3585             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3586
3587 msix_out:
3588         return ret;
3589
3590 free_irqs:
3591         pci_free_irq_vectors(ha->pdev);
3592         goto msix_out;
3593 }
3594
3595 int
3596 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3597 {
3598         int ret = QLA_FUNCTION_FAILED;
3599         device_reg_t *reg = ha->iobase;
3600         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3601
3602         /* If possible, enable MSI-X. */
3603         if (ql2xenablemsix == 0 || (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
3604             !IS_QLA8432(ha) && !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) &&
3605             !IS_QLAFX00(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)))
3606                 goto skip_msi;
3607
3608         if (ql2xenablemsix == 2)
3609                 goto skip_msix;
3610
3611         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3612                 (ha->pdev->subsystem_device == 0x7040 ||
3613                 ha->pdev->subsystem_device == 0x7041 ||
3614                 ha->pdev->subsystem_device == 0x1705)) {
3615                 ql_log(ql_log_warn, vha, 0x0034,
3616                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3617                         ha->pdev->subsystem_vendor,
3618                         ha->pdev->subsystem_device);
3619                 goto skip_msi;
3620         }
3621
3622         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3623                 ql_log(ql_log_warn, vha, 0x0035,
3624                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3625                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3626                 goto skip_msix;
3627         }
3628
3629         ret = qla24xx_enable_msix(ha, rsp);
3630         if (!ret) {
3631                 ql_dbg(ql_dbg_init, vha, 0x0036,
3632                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3633                     ha->chip_revision, ha->fw_attributes);
3634                 goto clear_risc_ints;
3635         }
3636
3637 skip_msix:
3638
3639         ql_log(ql_log_info, vha, 0x0037,
3640             "Falling back-to MSI mode -- ret=%d.\n", ret);
3641
3642         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3643             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3644             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3645                 goto skip_msi;
3646
3647         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
3648         if (ret > 0) {
3649                 ql_dbg(ql_dbg_init, vha, 0x0038,
3650                     "MSI: Enabled.\n");
3651                 ha->flags.msi_enabled = 1;
3652         } else
3653                 ql_log(ql_log_warn, vha, 0x0039,
3654                     "Falling back-to INTa mode -- ret=%d.\n", ret);
3655 skip_msi:
3656
3657         /* Skip INTx on ISP82xx. */
3658         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3659                 return QLA_FUNCTION_FAILED;
3660
3661         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3662             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3663             QLA2XXX_DRIVER_NAME, rsp);
3664         if (ret) {
3665                 ql_log(ql_log_warn, vha, 0x003a,
3666                     "Failed to reserve interrupt %d already in use.\n",
3667                     ha->pdev->irq);
3668                 goto fail;
3669         } else if (!ha->flags.msi_enabled) {
3670                 ql_dbg(ql_dbg_init, vha, 0x0125,
3671                     "INTa mode: Enabled.\n");
3672                 ha->flags.mr_intr_valid = 1;
3673         }
3674
3675 clear_risc_ints:
3676         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3677                 goto fail;
3678
3679         spin_lock_irq(&ha->hardware_lock);
3680         WRT_REG_WORD(&reg->isp.semaphore, 0);
3681         spin_unlock_irq(&ha->hardware_lock);
3682
3683 fail:
3684         return ret;
3685 }
3686
3687 void
3688 qla2x00_free_irqs(scsi_qla_host_t *vha)
3689 {
3690         struct qla_hw_data *ha = vha->hw;
3691         struct rsp_que *rsp;
3692         struct qla_msix_entry *qentry;
3693         int i;
3694
3695         /*
3696          * We need to check that ha->rsp_q_map is valid in case we are called
3697          * from a probe failure context.
3698          */
3699         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3700                 goto free_irqs;
3701         rsp = ha->rsp_q_map[0];
3702
3703         if (ha->flags.msix_enabled) {
3704                 for (i = 0; i < ha->msix_count; i++) {
3705                         qentry = &ha->msix_entries[i];
3706                         if (qentry->have_irq) {
3707                                 irq_set_affinity_notifier(qentry->vector, NULL);
3708                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
3709                         }
3710                 }
3711                 kfree(ha->msix_entries);
3712                 ha->msix_entries = NULL;
3713                 ha->flags.msix_enabled = 0;
3714                 ql_dbg(ql_dbg_init, vha, 0x0042,
3715                         "Disabled MSI-X.\n");
3716         } else {
3717                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
3718         }
3719
3720 free_irqs:
3721         pci_free_irq_vectors(ha->pdev);
3722 }
3723
3724 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
3725         struct qla_msix_entry *msix, int vector_type)
3726 {
3727         const struct qla_init_msix_entry *intr = &msix_entries[vector_type];
3728         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3729         int ret;
3730
3731         scnprintf(msix->name, sizeof(msix->name),
3732             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
3733         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
3734         if (ret) {
3735                 ql_log(ql_log_fatal, vha, 0x00e6,
3736                     "MSI-X: Unable to register handler -- %x/%d.\n",
3737                     msix->vector, ret);
3738                 return ret;
3739         }
3740         msix->have_irq = 1;
3741         msix->handle = qpair;
3742         return ret;
3743 }