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);
 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);
 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);
 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);
 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);
 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                                 fcport->logout_on_delete = 0;
1026                                 qlt_schedule_sess_for_deletion(fcport);
1027                         }
1028                         break;
1029
1030 global_port_update:
1031                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1032                                 atomic_set(&vha->loop_state, LOOP_DOWN);
1033                                 atomic_set(&vha->loop_down_timer,
1034                                     LOOP_DOWN_TIME);
1035                                 vha->device_flags |= DFLG_NO_CABLE;
1036                                 qla2x00_mark_all_devices_lost(vha);
1037                         }
1038
1039                         if (vha->vp_idx) {
1040                                 atomic_set(&vha->vp_state, VP_FAILED);
1041                                 fc_vport_set_state(vha->fc_vport,
1042                                     FC_VPORT_FAILED);
1043                                 qla2x00_mark_all_devices_lost(vha);
1044                         }
1045
1046                         vha->flags.management_server_logged_in = 0;
1047                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1048                         break;
1049                 }
1050
1051                 /*
1052                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1053                  * event etc. earlier indicating loop is down) then process
1054                  * it.  Otherwise ignore it and Wait for RSCN to come in.
1055                  */
1056                 atomic_set(&vha->loop_down_timer, 0);
1057                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
1058                         !ha->flags.n2n_ae  &&
1059                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
1060                         ql_dbg(ql_dbg_async, vha, 0x5011,
1061                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
1062                             mb[1], mb[2], mb[3]);
1063                         break;
1064                 }
1065
1066                 ql_dbg(ql_dbg_async, vha, 0x5012,
1067                     "Port database changed %04x %04x %04x.\n",
1068                     mb[1], mb[2], mb[3]);
1069
1070                 /*
1071                  * Mark all devices as missing so we will login again.
1072                  */
1073                 atomic_set(&vha->loop_state, LOOP_UP);
1074                 vha->scan.scan_retry = 0;
1075
1076                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1077                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1078                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
1079                 break;
1080
1081         case MBA_RSCN_UPDATE:           /* State Change Registration */
1082                 /* Check if the Vport has issued a SCR */
1083                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1084                         break;
1085                 /* Only handle SCNs for our Vport index. */
1086                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1087                         break;
1088
1089                 ql_dbg(ql_dbg_async, vha, 0x5013,
1090                     "RSCN database changed -- %04x %04x %04x.\n",
1091                     mb[1], mb[2], mb[3]);
1092
1093                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1094                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1095                                 | vha->d_id.b.al_pa;
1096                 if (rscn_entry == host_pid) {
1097                         ql_dbg(ql_dbg_async, vha, 0x5014,
1098                             "Ignoring RSCN update to local host "
1099                             "port ID (%06x).\n", host_pid);
1100                         break;
1101                 }
1102
1103                 /* Ignore reserved bits from RSCN-payload. */
1104                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1105
1106                 /* Skip RSCNs for virtual ports on the same physical port */
1107                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1108                         break;
1109
1110                 atomic_set(&vha->loop_down_timer, 0);
1111                 vha->flags.management_server_logged_in = 0;
1112                 {
1113                         struct event_arg ea;
1114
1115                         memset(&ea, 0, sizeof(ea));
1116                         ea.id.b24 = rscn_entry;
1117                         ea.id.b.rsvd_1 = rscn_entry >> 24;
1118                         qla2x00_handle_rscn(vha, &ea);
1119                         qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1120                 }
1121                 break;
1122         /* case MBA_RIO_RESPONSE: */
1123         case MBA_ZIO_RESPONSE:
1124                 ql_dbg(ql_dbg_async, vha, 0x5015,
1125                     "[R|Z]IO update completion.\n");
1126
1127                 if (IS_FWI2_CAPABLE(ha))
1128                         qla24xx_process_response_queue(vha, rsp);
1129                 else
1130                         qla2x00_process_response_queue(rsp);
1131                 break;
1132
1133         case MBA_DISCARD_RND_FRAME:
1134                 ql_dbg(ql_dbg_async, vha, 0x5016,
1135                     "Discard RND Frame -- %04x %04x %04x.\n",
1136                     mb[1], mb[2], mb[3]);
1137                 break;
1138
1139         case MBA_TRACE_NOTIFICATION:
1140                 ql_dbg(ql_dbg_async, vha, 0x5017,
1141                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1142                 break;
1143
1144         case MBA_ISP84XX_ALERT:
1145                 ql_dbg(ql_dbg_async, vha, 0x5018,
1146                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1147                     mb[1], mb[2], mb[3]);
1148
1149                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1150                 switch (mb[1]) {
1151                 case A84_PANIC_RECOVERY:
1152                         ql_log(ql_log_info, vha, 0x5019,
1153                             "Alert 84XX: panic recovery %04x %04x.\n",
1154                             mb[2], mb[3]);
1155                         break;
1156                 case A84_OP_LOGIN_COMPLETE:
1157                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1158                         ql_log(ql_log_info, vha, 0x501a,
1159                             "Alert 84XX: firmware version %x.\n",
1160                             ha->cs84xx->op_fw_version);
1161                         break;
1162                 case A84_DIAG_LOGIN_COMPLETE:
1163                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1164                         ql_log(ql_log_info, vha, 0x501b,
1165                             "Alert 84XX: diagnostic firmware version %x.\n",
1166                             ha->cs84xx->diag_fw_version);
1167                         break;
1168                 case A84_GOLD_LOGIN_COMPLETE:
1169                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1170                         ha->cs84xx->fw_update = 1;
1171                         ql_log(ql_log_info, vha, 0x501c,
1172                             "Alert 84XX: gold firmware version %x.\n",
1173                             ha->cs84xx->gold_fw_version);
1174                         break;
1175                 default:
1176                         ql_log(ql_log_warn, vha, 0x501d,
1177                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1178                             mb[1], mb[2], mb[3]);
1179                 }
1180                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1181                 break;
1182         case MBA_DCBX_START:
1183                 ql_dbg(ql_dbg_async, vha, 0x501e,
1184                     "DCBX Started -- %04x %04x %04x.\n",
1185                     mb[1], mb[2], mb[3]);
1186                 break;
1187         case MBA_DCBX_PARAM_UPDATE:
1188                 ql_dbg(ql_dbg_async, vha, 0x501f,
1189                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1190                     mb[1], mb[2], mb[3]);
1191                 break;
1192         case MBA_FCF_CONF_ERR:
1193                 ql_dbg(ql_dbg_async, vha, 0x5020,
1194                     "FCF Configuration Error -- %04x %04x %04x.\n",
1195                     mb[1], mb[2], mb[3]);
1196                 break;
1197         case MBA_IDC_NOTIFY:
1198                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1199                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1200                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1201                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1202                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1203                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1204                                 /*
1205                                  * Extend loop down timer since port is active.
1206                                  */
1207                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1208                                         atomic_set(&vha->loop_down_timer,
1209                                             LOOP_DOWN_TIME);
1210                                 qla2xxx_wake_dpc(vha);
1211                         }
1212                 }
1213                 /* fall through */
1214         case MBA_IDC_COMPLETE:
1215                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1216                         complete(&ha->lb_portup_comp);
1217                 /* Fallthru */
1218         case MBA_IDC_TIME_EXT:
1219                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1220                     IS_QLA8044(ha))
1221                         qla81xx_idc_event(vha, mb[0], mb[1]);
1222                 break;
1223
1224         case MBA_IDC_AEN:
1225                 if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
1226                         ha->flags.fw_init_done = 0;
1227                         ql_log(ql_log_warn, vha, 0xffff,
1228                             "MPI Heartbeat stop. Chip reset needed. MB0[%xh] MB1[%xh] MB2[%xh] MB3[%xh]\n",
1229                             mb[0], mb[1], mb[2], mb[3]);
1230
1231                         if ((mb[1] & BIT_8) ||
1232                             (mb[2] & BIT_8)) {
1233                                 ql_log(ql_log_warn, vha, 0xd013,
1234                                     "MPI Heartbeat stop. FW dump needed\n");
1235                                 ha->fw_dump_mpi = 1;
1236                                 ha->isp_ops->fw_dump(vha, 1);
1237                         }
1238                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1239                         qla2xxx_wake_dpc(vha);
1240                 } else if (IS_QLA83XX(ha)) {
1241                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1242                         mb[5] = RD_REG_WORD(&reg24->mailbox5);
1243                         mb[6] = RD_REG_WORD(&reg24->mailbox6);
1244                         mb[7] = RD_REG_WORD(&reg24->mailbox7);
1245                         qla83xx_handle_8200_aen(vha, mb);
1246                 } else {
1247                         ql_dbg(ql_dbg_async, vha, 0x5052,
1248                             "skip Heartbeat processing mb0-3=[0x%04x] [0x%04x] [0x%04x] [0x%04x]\n",
1249                             mb[0], mb[1], mb[2], mb[3]);
1250                 }
1251                 break;
1252
1253         case MBA_DPORT_DIAGNOSTICS:
1254                 ql_dbg(ql_dbg_async, vha, 0x5052,
1255                     "D-Port Diagnostics: %04x %04x %04x %04x\n",
1256                     mb[0], mb[1], mb[2], mb[3]);
1257                 if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
1258                         static char *results[] = {
1259                             "start", "done(pass)", "done(error)", "undefined" };
1260                         static char *types[] = {
1261                             "none", "dynamic", "static", "other" };
1262                         uint result = mb[1] >> 0 & 0x3;
1263                         uint type = mb[1] >> 6 & 0x3;
1264                         uint sw = mb[1] >> 15 & 0x1;
1265                         ql_dbg(ql_dbg_async, vha, 0x5052,
1266                             "D-Port Diagnostics: result=%s type=%s [sw=%u]\n",
1267                             results[result], types[type], sw);
1268                         if (result == 2) {
1269                                 static char *reasons[] = {
1270                                     "reserved", "unexpected reject",
1271                                     "unexpected phase", "retry exceeded",
1272                                     "timed out", "not supported",
1273                                     "user stopped" };
1274                                 uint reason = mb[2] >> 0 & 0xf;
1275                                 uint phase = mb[2] >> 12 & 0xf;
1276                                 ql_dbg(ql_dbg_async, vha, 0x5052,
1277                                     "D-Port Diagnostics: reason=%s phase=%u \n",
1278                                     reason < 7 ? reasons[reason] : "other",
1279                                     phase >> 1);
1280                         }
1281                 }
1282                 break;
1283
1284         case MBA_TEMPERATURE_ALERT:
1285                 ql_dbg(ql_dbg_async, vha, 0x505e,
1286                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1287                 if (mb[1] == 0x12)
1288                         schedule_work(&ha->board_disable);
1289                 break;
1290
1291         case MBA_TRANS_INSERT:
1292                 ql_dbg(ql_dbg_async, vha, 0x5091,
1293                     "Transceiver Insertion: %04x\n", mb[1]);
1294                 break;
1295
1296         default:
1297                 ql_dbg(ql_dbg_async, vha, 0x5057,
1298                     "Unknown AEN:%04x %04x %04x %04x\n",
1299                     mb[0], mb[1], mb[2], mb[3]);
1300         }
1301
1302         qlt_async_event(mb[0], vha, mb);
1303
1304         if (!vha->vp_idx && ha->num_vhosts)
1305                 qla2x00_alert_all_vps(rsp, mb);
1306 }
1307
1308 /**
1309  * qla2x00_process_completed_request() - Process a Fast Post response.
1310  * @vha: SCSI driver HA context
1311  * @req: request queue
1312  * @index: SRB index
1313  */
1314 void
1315 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1316                                   struct req_que *req, uint32_t index)
1317 {
1318         srb_t *sp;
1319         struct qla_hw_data *ha = vha->hw;
1320
1321         /* Validate handle. */
1322         if (index >= req->num_outstanding_cmds) {
1323                 ql_log(ql_log_warn, vha, 0x3014,
1324                     "Invalid SCSI command index (%x).\n", index);
1325
1326                 if (IS_P3P_TYPE(ha))
1327                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1328                 else
1329                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1330                 return;
1331         }
1332
1333         sp = req->outstanding_cmds[index];
1334         if (sp) {
1335                 /* Free outstanding command slot. */
1336                 req->outstanding_cmds[index] = NULL;
1337
1338                 /* Save ISP completion status */
1339                 sp->done(sp, DID_OK << 16);
1340         } else {
1341                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1342
1343                 if (IS_P3P_TYPE(ha))
1344                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1345                 else
1346                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1347         }
1348 }
1349
1350 srb_t *
1351 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1352     struct req_que *req, void *iocb)
1353 {
1354         struct qla_hw_data *ha = vha->hw;
1355         sts_entry_t *pkt = iocb;
1356         srb_t *sp = NULL;
1357         uint16_t index;
1358
1359         index = LSW(pkt->handle);
1360         if (index >= req->num_outstanding_cmds) {
1361                 ql_log(ql_log_warn, vha, 0x5031,
1362                            "Invalid command index (%x) type %8ph.\n",
1363                            index, iocb);
1364                 if (IS_P3P_TYPE(ha))
1365                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1366                 else
1367                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1368                 goto done;
1369         }
1370         sp = req->outstanding_cmds[index];
1371         if (!sp) {
1372                 ql_log(ql_log_warn, vha, 0x5032,
1373                     "Invalid completion handle (%x) -- timed-out.\n", index);
1374                 return sp;
1375         }
1376         if (sp->handle != index) {
1377                 ql_log(ql_log_warn, vha, 0x5033,
1378                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1379                 return NULL;
1380         }
1381
1382         req->outstanding_cmds[index] = NULL;
1383
1384 done:
1385         return sp;
1386 }
1387
1388 static void
1389 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1390     struct mbx_entry *mbx)
1391 {
1392         const char func[] = "MBX-IOCB";
1393         const char *type;
1394         fc_port_t *fcport;
1395         srb_t *sp;
1396         struct srb_iocb *lio;
1397         uint16_t *data;
1398         uint16_t status;
1399
1400         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1401         if (!sp)
1402                 return;
1403
1404         lio = &sp->u.iocb_cmd;
1405         type = sp->name;
1406         fcport = sp->fcport;
1407         data = lio->u.logio.data;
1408
1409         data[0] = MBS_COMMAND_ERROR;
1410         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1411             QLA_LOGIO_LOGIN_RETRIED : 0;
1412         if (mbx->entry_status) {
1413                 ql_dbg(ql_dbg_async, vha, 0x5043,
1414                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1415                     "entry-status=%x status=%x state-flag=%x "
1416                     "status-flags=%x.\n", type, sp->handle,
1417                     fcport->d_id.b.domain, fcport->d_id.b.area,
1418                     fcport->d_id.b.al_pa, mbx->entry_status,
1419                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1420                     le16_to_cpu(mbx->status_flags));
1421
1422                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1423                     mbx, sizeof(*mbx));
1424
1425                 goto logio_done;
1426         }
1427
1428         status = le16_to_cpu(mbx->status);
1429         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1430             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1431                 status = 0;
1432         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1433                 ql_dbg(ql_dbg_async, vha, 0x5045,
1434                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1435                     type, sp->handle, fcport->d_id.b.domain,
1436                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1437                     le16_to_cpu(mbx->mb1));
1438
1439                 data[0] = MBS_COMMAND_COMPLETE;
1440                 if (sp->type == SRB_LOGIN_CMD) {
1441                         fcport->port_type = FCT_TARGET;
1442                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1443                                 fcport->port_type = FCT_INITIATOR;
1444                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1445                                 fcport->flags |= FCF_FCP2_DEVICE;
1446                 }
1447                 goto logio_done;
1448         }
1449
1450         data[0] = le16_to_cpu(mbx->mb0);
1451         switch (data[0]) {
1452         case MBS_PORT_ID_USED:
1453                 data[1] = le16_to_cpu(mbx->mb1);
1454                 break;
1455         case MBS_LOOP_ID_USED:
1456                 break;
1457         default:
1458                 data[0] = MBS_COMMAND_ERROR;
1459                 break;
1460         }
1461
1462         ql_log(ql_log_warn, vha, 0x5046,
1463             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1464             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1465             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1466             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1467             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1468             le16_to_cpu(mbx->mb7));
1469
1470 logio_done:
1471         sp->done(sp, 0);
1472 }
1473
1474 static void
1475 qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1476     struct mbx_24xx_entry *pkt)
1477 {
1478         const char func[] = "MBX-IOCB2";
1479         srb_t *sp;
1480         struct srb_iocb *si;
1481         u16 sz, i;
1482         int res;
1483
1484         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1485         if (!sp)
1486                 return;
1487
1488         si = &sp->u.iocb_cmd;
1489         sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));
1490
1491         for (i = 0; i < sz; i++)
1492                 si->u.mbx.in_mb[i] = le16_to_cpu(pkt->mb[i]);
1493
1494         res = (si->u.mbx.in_mb[0] & MBS_MASK);
1495
1496         sp->done(sp, res);
1497 }
1498
1499 static void
1500 qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1501     struct nack_to_isp *pkt)
1502 {
1503         const char func[] = "nack";
1504         srb_t *sp;
1505         int res = 0;
1506
1507         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1508         if (!sp)
1509                 return;
1510
1511         if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
1512                 res = QLA_FUNCTION_FAILED;
1513
1514         sp->done(sp, res);
1515 }
1516
1517 static void
1518 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1519     sts_entry_t *pkt, int iocb_type)
1520 {
1521         const char func[] = "CT_IOCB";
1522         const char *type;
1523         srb_t *sp;
1524         struct bsg_job *bsg_job;
1525         struct fc_bsg_reply *bsg_reply;
1526         uint16_t comp_status;
1527         int res = 0;
1528
1529         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1530         if (!sp)
1531                 return;
1532
1533         switch (sp->type) {
1534         case SRB_CT_CMD:
1535             bsg_job = sp->u.bsg_job;
1536             bsg_reply = bsg_job->reply;
1537
1538             type = "ct pass-through";
1539
1540             comp_status = le16_to_cpu(pkt->comp_status);
1541
1542             /*
1543              * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1544              * fc payload  to the caller
1545              */
1546             bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1547             bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1548
1549             if (comp_status != CS_COMPLETE) {
1550                     if (comp_status == CS_DATA_UNDERRUN) {
1551                             res = DID_OK << 16;
1552                             bsg_reply->reply_payload_rcv_len =
1553                                 le16_to_cpu(pkt->rsp_info_len);
1554
1555                             ql_log(ql_log_warn, vha, 0x5048,
1556                                 "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
1557                                 type, comp_status,
1558                                 bsg_reply->reply_payload_rcv_len);
1559                     } else {
1560                             ql_log(ql_log_warn, vha, 0x5049,
1561                                 "CT pass-through-%s error comp_status=0x%x.\n",
1562                                 type, comp_status);
1563                             res = DID_ERROR << 16;
1564                             bsg_reply->reply_payload_rcv_len = 0;
1565                     }
1566                     ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1567                         pkt, sizeof(*pkt));
1568             } else {
1569                     res = DID_OK << 16;
1570                     bsg_reply->reply_payload_rcv_len =
1571                         bsg_job->reply_payload.payload_len;
1572                     bsg_job->reply_len = 0;
1573             }
1574             break;
1575         case SRB_CT_PTHRU_CMD:
1576             /*
1577              * borrowing sts_entry_24xx.comp_status.
1578              * same location as ct_entry_24xx.comp_status
1579              */
1580              res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1581                  (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1582                  sp->name);
1583              break;
1584         }
1585
1586         sp->done(sp, res);
1587 }
1588
1589 static void
1590 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1591     struct sts_entry_24xx *pkt, int iocb_type)
1592 {
1593         const char func[] = "ELS_CT_IOCB";
1594         const char *type;
1595         srb_t *sp;
1596         struct bsg_job *bsg_job;
1597         struct fc_bsg_reply *bsg_reply;
1598         uint16_t comp_status;
1599         uint32_t fw_status[3];
1600         int res;
1601         struct srb_iocb *els;
1602
1603         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1604         if (!sp)
1605                 return;
1606
1607         type = NULL;
1608         switch (sp->type) {
1609         case SRB_ELS_CMD_RPT:
1610         case SRB_ELS_CMD_HST:
1611                 type = "els";
1612                 break;
1613         case SRB_CT_CMD:
1614                 type = "ct pass-through";
1615                 break;
1616         case SRB_ELS_DCMD:
1617                 type = "Driver ELS logo";
1618                 if (iocb_type != ELS_IOCB_TYPE) {
1619                         ql_dbg(ql_dbg_user, vha, 0x5047,
1620                             "Completing %s: (%p) type=%d.\n",
1621                             type, sp, sp->type);
1622                         sp->done(sp, 0);
1623                         return;
1624                 }
1625                 break;
1626         case SRB_CT_PTHRU_CMD:
1627                 /* borrowing sts_entry_24xx.comp_status.
1628                    same location as ct_entry_24xx.comp_status
1629                  */
1630                 res = qla2x00_chk_ms_status(sp->vha, (ms_iocb_entry_t *)pkt,
1631                         (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1632                         sp->name);
1633                 sp->done(sp, res);
1634                 return;
1635         default:
1636                 ql_dbg(ql_dbg_user, vha, 0x503e,
1637                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1638                 return;
1639         }
1640
1641         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1642         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_1);
1643         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_2);
1644
1645         if (iocb_type == ELS_IOCB_TYPE) {
1646                 els = &sp->u.iocb_cmd;
1647                 els->u.els_plogi.fw_status[0] = fw_status[0];
1648                 els->u.els_plogi.fw_status[1] = fw_status[1];
1649                 els->u.els_plogi.fw_status[2] = fw_status[2];
1650                 els->u.els_plogi.comp_status = fw_status[0];
1651                 if (comp_status == CS_COMPLETE) {
1652                         res =  DID_OK << 16;
1653                 } else {
1654                         if (comp_status == CS_DATA_UNDERRUN) {
1655                                 res =  DID_OK << 16;
1656                                 els->u.els_plogi.len =
1657                                 le16_to_cpu(((struct els_sts_entry_24xx *)
1658                                         pkt)->total_byte_count);
1659                         } else {
1660                                 els->u.els_plogi.len = 0;
1661                                 res = DID_ERROR << 16;
1662                         }
1663                 }
1664                 ql_dbg(ql_dbg_user, vha, 0x503f,
1665                     "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",
1666                     type, sp->handle, comp_status, fw_status[1], fw_status[2],
1667                     le16_to_cpu(((struct els_sts_entry_24xx *)
1668                         pkt)->total_byte_count));
1669                 goto els_ct_done;
1670         }
1671
1672         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1673          * fc payload  to the caller
1674          */
1675         bsg_job = sp->u.bsg_job;
1676         bsg_reply = bsg_job->reply;
1677         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1678         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1679
1680         if (comp_status != CS_COMPLETE) {
1681                 if (comp_status == CS_DATA_UNDERRUN) {
1682                         res = DID_OK << 16;
1683                         bsg_reply->reply_payload_rcv_len =
1684                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1685
1686                         ql_dbg(ql_dbg_user, vha, 0x503f,
1687                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1688                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1689                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1690                             le16_to_cpu(((struct els_sts_entry_24xx *)
1691                                 pkt)->total_byte_count));
1692                 } else {
1693                         ql_dbg(ql_dbg_user, vha, 0x5040,
1694                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1695                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1696                             type, sp->handle, comp_status,
1697                             le16_to_cpu(((struct els_sts_entry_24xx *)
1698                                 pkt)->error_subcode_1),
1699                             le16_to_cpu(((struct els_sts_entry_24xx *)
1700                                     pkt)->error_subcode_2));
1701                         res = DID_ERROR << 16;
1702                         bsg_reply->reply_payload_rcv_len = 0;
1703                 }
1704                 memcpy(bsg_job->reply + sizeof(struct fc_bsg_reply),
1705                        fw_status, sizeof(fw_status));
1706                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1707                     pkt, sizeof(*pkt));
1708         }
1709         else {
1710                 res =  DID_OK << 16;
1711                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1712                 bsg_job->reply_len = 0;
1713         }
1714 els_ct_done:
1715
1716         sp->done(sp, res);
1717 }
1718
1719 static void
1720 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1721     struct logio_entry_24xx *logio)
1722 {
1723         const char func[] = "LOGIO-IOCB";
1724         const char *type;
1725         fc_port_t *fcport;
1726         srb_t *sp;
1727         struct srb_iocb *lio;
1728         uint16_t *data;
1729         uint32_t iop[2];
1730
1731         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1732         if (!sp)
1733                 return;
1734
1735         lio = &sp->u.iocb_cmd;
1736         type = sp->name;
1737         fcport = sp->fcport;
1738         data = lio->u.logio.data;
1739
1740         data[0] = MBS_COMMAND_ERROR;
1741         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1742                 QLA_LOGIO_LOGIN_RETRIED : 0;
1743         if (logio->entry_status) {
1744                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1745                     "Async-%s error entry - %8phC hdl=%x"
1746                     "portid=%02x%02x%02x entry-status=%x.\n",
1747                     type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
1748                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1749                     logio->entry_status);
1750                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1751                     logio, sizeof(*logio));
1752
1753                 goto logio_done;
1754         }
1755
1756         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1757                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1758                     "Async-%s complete - %8phC hdl=%x portid=%02x%02x%02x "
1759                     "iop0=%x.\n", type, fcport->port_name, sp->handle,
1760                     fcport->d_id.b.domain,
1761                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1762                     le32_to_cpu(logio->io_parameter[0]));
1763
1764                 vha->hw->exch_starvation = 0;
1765                 data[0] = MBS_COMMAND_COMPLETE;
1766
1767                 if (sp->type == SRB_PRLI_CMD) {
1768                         lio->u.logio.iop[0] =
1769                             le32_to_cpu(logio->io_parameter[0]);
1770                         lio->u.logio.iop[1] =
1771                             le32_to_cpu(logio->io_parameter[1]);
1772                         goto logio_done;
1773                 }
1774
1775                 if (sp->type != SRB_LOGIN_CMD)
1776                         goto logio_done;
1777
1778                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1779                 if (iop[0] & BIT_4) {
1780                         fcport->port_type = FCT_TARGET;
1781                         if (iop[0] & BIT_8)
1782                                 fcport->flags |= FCF_FCP2_DEVICE;
1783                 } else if (iop[0] & BIT_5)
1784                         fcport->port_type = FCT_INITIATOR;
1785
1786                 if (iop[0] & BIT_7)
1787                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1788
1789                 if (logio->io_parameter[7] || logio->io_parameter[8])
1790                         fcport->supported_classes |= FC_COS_CLASS2;
1791                 if (logio->io_parameter[9] || logio->io_parameter[10])
1792                         fcport->supported_classes |= FC_COS_CLASS3;
1793
1794                 goto logio_done;
1795         }
1796
1797         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1798         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1799         lio->u.logio.iop[0] = iop[0];
1800         lio->u.logio.iop[1] = iop[1];
1801         switch (iop[0]) {
1802         case LSC_SCODE_PORTID_USED:
1803                 data[0] = MBS_PORT_ID_USED;
1804                 data[1] = LSW(iop[1]);
1805                 break;
1806         case LSC_SCODE_NPORT_USED:
1807                 data[0] = MBS_LOOP_ID_USED;
1808                 break;
1809         case LSC_SCODE_CMD_FAILED:
1810                 if (iop[1] == 0x0606) {
1811                         /*
1812                          * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
1813                          * Target side acked.
1814                          */
1815                         data[0] = MBS_COMMAND_COMPLETE;
1816                         goto logio_done;
1817                 }
1818                 data[0] = MBS_COMMAND_ERROR;
1819                 break;
1820         case LSC_SCODE_NOXCB:
1821                 vha->hw->exch_starvation++;
1822                 if (vha->hw->exch_starvation > 5) {
1823                         ql_log(ql_log_warn, vha, 0xd046,
1824                             "Exchange starvation. Resetting RISC\n");
1825
1826                         vha->hw->exch_starvation = 0;
1827
1828                         if (IS_P3P_TYPE(vha->hw))
1829                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1830                         else
1831                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1832                         qla2xxx_wake_dpc(vha);
1833                 }
1834                 /* fall through */
1835         default:
1836                 data[0] = MBS_COMMAND_ERROR;
1837                 break;
1838         }
1839
1840         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1841             "Async-%s failed - %8phC hdl=%x portid=%02x%02x%02x comp=%x "
1842             "iop0=%x iop1=%x.\n", type, fcport->port_name,
1843                 sp->handle, fcport->d_id.b.domain,
1844             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1845             le16_to_cpu(logio->comp_status),
1846             le32_to_cpu(logio->io_parameter[0]),
1847             le32_to_cpu(logio->io_parameter[1]));
1848
1849 logio_done:
1850         sp->done(sp, 0);
1851 }
1852
1853 static void
1854 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1855 {
1856         const char func[] = "TMF-IOCB";
1857         const char *type;
1858         fc_port_t *fcport;
1859         srb_t *sp;
1860         struct srb_iocb *iocb;
1861         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1862
1863         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1864         if (!sp)
1865                 return;
1866
1867         iocb = &sp->u.iocb_cmd;
1868         type = sp->name;
1869         fcport = sp->fcport;
1870         iocb->u.tmf.data = QLA_SUCCESS;
1871
1872         if (sts->entry_status) {
1873                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1874                     "Async-%s error - hdl=%x entry-status(%x).\n",
1875                     type, sp->handle, sts->entry_status);
1876                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1877         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1878                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1879                     "Async-%s error - hdl=%x completion status(%x).\n",
1880                     type, sp->handle, sts->comp_status);
1881                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1882         } else if ((le16_to_cpu(sts->scsi_status) &
1883             SS_RESPONSE_INFO_LEN_VALID)) {
1884                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1885                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1886                             "Async-%s error - hdl=%x not enough response(%d).\n",
1887                             type, sp->handle, sts->rsp_data_len);
1888                 } else if (sts->data[3]) {
1889                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1890                             "Async-%s error - hdl=%x response(%x).\n",
1891                             type, sp->handle, sts->data[3]);
1892                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1893                 }
1894         }
1895
1896         if (iocb->u.tmf.data != QLA_SUCCESS)
1897                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, sp->vha, 0x5055,
1898                     sts, sizeof(*sts));
1899
1900         sp->done(sp, 0);
1901 }
1902
1903 static void qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1904     void *tsk, srb_t *sp)
1905 {
1906         fc_port_t *fcport;
1907         struct srb_iocb *iocb;
1908         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1909         uint16_t        state_flags;
1910         struct nvmefc_fcp_req *fd;
1911         uint16_t        ret = QLA_SUCCESS;
1912         uint16_t        comp_status = le16_to_cpu(sts->comp_status);
1913
1914         iocb = &sp->u.iocb_cmd;
1915         fcport = sp->fcport;
1916         iocb->u.nvme.comp_status = comp_status;
1917         state_flags  = le16_to_cpu(sts->state_flags);
1918         fd = iocb->u.nvme.desc;
1919
1920         if (unlikely(iocb->u.nvme.aen_op))
1921                 atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
1922
1923         /*
1924          * State flags: Bit 6 and 0.
1925          * If 0 is set, we don't care about 6.
1926          * both cases resp was dma'd to host buffer
1927          * if both are 0, that is good path case.
1928          * if six is set and 0 is clear, we need to
1929          * copy resp data from status iocb to resp buffer.
1930          */
1931         if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
1932                 iocb->u.nvme.rsp_pyld_len = 0;
1933         } else if ((state_flags & SF_FCP_RSP_DMA)) {
1934                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1935         } else if (state_flags & SF_NVME_ERSP) {
1936                 uint32_t *inbuf, *outbuf;
1937                 uint16_t iter;
1938
1939                 inbuf = (uint32_t *)&sts->nvme_ersp_data;
1940                 outbuf = (uint32_t *)fd->rspaddr;
1941                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1942                 if (unlikely(iocb->u.nvme.rsp_pyld_len >
1943                     sizeof(struct nvme_fc_ersp_iu))) {
1944                         if (ql_mask_match(ql_dbg_io)) {
1945                                 WARN_ONCE(1, "Unexpected response payload length %u.\n",
1946                                     iocb->u.nvme.rsp_pyld_len);
1947                                 ql_log(ql_log_warn, fcport->vha, 0x5100,
1948                                     "Unexpected response payload length %u.\n",
1949                                     iocb->u.nvme.rsp_pyld_len);
1950                         }
1951                         iocb->u.nvme.rsp_pyld_len =
1952                             sizeof(struct nvme_fc_ersp_iu);
1953                 }
1954                 iter = iocb->u.nvme.rsp_pyld_len >> 2;
1955                 for (; iter; iter--)
1956                         *outbuf++ = swab32(*inbuf++);
1957         } else { /* unhandled case */
1958             ql_log(ql_log_warn, fcport->vha, 0x503a,
1959                 "NVME-%s error. Unhandled state_flags of %x\n",
1960                 sp->name, state_flags);
1961         }
1962
1963         fd->transferred_length = fd->payload_length -
1964             le32_to_cpu(sts->residual_len);
1965
1966         if (unlikely(comp_status != CS_COMPLETE))
1967                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1968                    "NVME-%s ERR Handling - hdl=%x status(%x) tr_len:%x resid=%x  ox_id=%x\n",
1969                    sp->name, sp->handle, comp_status,
1970                    fd->transferred_length, le32_to_cpu(sts->residual_len),
1971                    sts->ox_id);
1972
1973         /*
1974          * If transport error then Failure (HBA rejects request)
1975          * otherwise transport will handle.
1976          */
1977         switch (comp_status) {
1978         case CS_COMPLETE:
1979                 break;
1980
1981         case CS_RESET:
1982         case CS_PORT_UNAVAILABLE:
1983         case CS_PORT_LOGGED_OUT:
1984                 fcport->nvme_flag |= NVME_FLAG_RESETTING;
1985                 /* fall through */
1986         case CS_ABORTED:
1987         case CS_PORT_BUSY:
1988                 fd->transferred_length = 0;
1989                 iocb->u.nvme.rsp_pyld_len = 0;
1990                 ret = QLA_ABORTED;
1991                 break;
1992         case CS_DATA_UNDERRUN:
1993                 break;
1994         default:
1995                 ret = QLA_FUNCTION_FAILED;
1996                 break;
1997         }
1998         sp->done(sp, ret);
1999 }
2000
2001 static void qla_ctrlvp_completed(scsi_qla_host_t *vha, struct req_que *req,
2002     struct vp_ctrl_entry_24xx *vce)
2003 {
2004         const char func[] = "CTRLVP-IOCB";
2005         srb_t *sp;
2006         int rval = QLA_SUCCESS;
2007
2008         sp = qla2x00_get_sp_from_handle(vha, func, req, vce);
2009         if (!sp)
2010                 return;
2011
2012         if (vce->entry_status != 0) {
2013                 ql_dbg(ql_dbg_vport, vha, 0x10c4,
2014                     "%s: Failed to complete IOCB -- error status (%x)\n",
2015                     sp->name, vce->entry_status);
2016                 rval = QLA_FUNCTION_FAILED;
2017         } else if (vce->comp_status != cpu_to_le16(CS_COMPLETE)) {
2018                 ql_dbg(ql_dbg_vport, vha, 0x10c5,
2019                     "%s: Failed to complete IOCB -- completion status (%x) vpidx %x\n",
2020                     sp->name, le16_to_cpu(vce->comp_status),
2021                     le16_to_cpu(vce->vp_idx_failed));
2022                 rval = QLA_FUNCTION_FAILED;
2023         } else {
2024                 ql_dbg(ql_dbg_vport, vha, 0x10c6,
2025                     "Done %s.\n", __func__);
2026         }
2027
2028         sp->rc = rval;
2029         sp->done(sp, rval);
2030 }
2031
2032 /* Process a single response queue entry. */
2033 static void qla2x00_process_response_entry(struct scsi_qla_host *vha,
2034                                            struct rsp_que *rsp,
2035                                            sts_entry_t *pkt)
2036 {
2037         sts21_entry_t *sts21_entry;
2038         sts22_entry_t *sts22_entry;
2039         uint16_t handle_cnt;
2040         uint16_t cnt;
2041
2042         switch (pkt->entry_type) {
2043         case STATUS_TYPE:
2044                 qla2x00_status_entry(vha, rsp, pkt);
2045                 break;
2046         case STATUS_TYPE_21:
2047                 sts21_entry = (sts21_entry_t *)pkt;
2048                 handle_cnt = sts21_entry->handle_count;
2049                 for (cnt = 0; cnt < handle_cnt; cnt++)
2050                         qla2x00_process_completed_request(vha, rsp->req,
2051                                                 sts21_entry->handle[cnt]);
2052                 break;
2053         case STATUS_TYPE_22:
2054                 sts22_entry = (sts22_entry_t *)pkt;
2055                 handle_cnt = sts22_entry->handle_count;
2056                 for (cnt = 0; cnt < handle_cnt; cnt++)
2057                         qla2x00_process_completed_request(vha, rsp->req,
2058                                                 sts22_entry->handle[cnt]);
2059                 break;
2060         case STATUS_CONT_TYPE:
2061                 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2062                 break;
2063         case MBX_IOCB_TYPE:
2064                 qla2x00_mbx_iocb_entry(vha, rsp->req, (struct mbx_entry *)pkt);
2065                 break;
2066         case CT_IOCB_TYPE:
2067                 qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2068                 break;
2069         default:
2070                 /* Type Not Supported. */
2071                 ql_log(ql_log_warn, vha, 0x504a,
2072                        "Received unknown response pkt type %x entry status=%x.\n",
2073                        pkt->entry_type, pkt->entry_status);
2074                 break;
2075         }
2076 }
2077
2078 /**
2079  * qla2x00_process_response_queue() - Process response queue entries.
2080  * @rsp: response queue
2081  */
2082 void
2083 qla2x00_process_response_queue(struct rsp_que *rsp)
2084 {
2085         struct scsi_qla_host *vha;
2086         struct qla_hw_data *ha = rsp->hw;
2087         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
2088         sts_entry_t     *pkt;
2089
2090         vha = pci_get_drvdata(ha->pdev);
2091
2092         if (!vha->flags.online)
2093                 return;
2094
2095         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2096                 pkt = (sts_entry_t *)rsp->ring_ptr;
2097
2098                 rsp->ring_index++;
2099                 if (rsp->ring_index == rsp->length) {
2100                         rsp->ring_index = 0;
2101                         rsp->ring_ptr = rsp->ring;
2102                 } else {
2103                         rsp->ring_ptr++;
2104                 }
2105
2106                 if (pkt->entry_status != 0) {
2107                         qla2x00_error_entry(vha, rsp, pkt);
2108                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2109                         wmb();
2110                         continue;
2111                 }
2112
2113                 qla2x00_process_response_entry(vha, rsp, pkt);
2114                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2115                 wmb();
2116         }
2117
2118         /* Adjust ring index */
2119         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
2120 }
2121
2122 static inline void
2123 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
2124                      uint32_t sense_len, struct rsp_que *rsp, int res)
2125 {
2126         struct scsi_qla_host *vha = sp->vha;
2127         struct scsi_cmnd *cp = GET_CMD_SP(sp);
2128         uint32_t track_sense_len;
2129
2130         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
2131                 sense_len = SCSI_SENSE_BUFFERSIZE;
2132
2133         SET_CMD_SENSE_LEN(sp, sense_len);
2134         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
2135         track_sense_len = sense_len;
2136
2137         if (sense_len > par_sense_len)
2138                 sense_len = par_sense_len;
2139
2140         memcpy(cp->sense_buffer, sense_data, sense_len);
2141
2142         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
2143         track_sense_len -= sense_len;
2144         SET_CMD_SENSE_LEN(sp, track_sense_len);
2145
2146         if (track_sense_len != 0) {
2147                 rsp->status_srb = sp;
2148                 cp->result = res;
2149         }
2150
2151         if (sense_len) {
2152                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
2153                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
2154                     sp->vha->host_no, cp->device->id, cp->device->lun,
2155                     cp);
2156                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
2157                     cp->sense_buffer, sense_len);
2158         }
2159 }
2160
2161 struct scsi_dif_tuple {
2162         __be16 guard;       /* Checksum */
2163         __be16 app_tag;         /* APPL identifier */
2164         __be32 ref_tag;         /* Target LBA or indirect LBA */
2165 };
2166
2167 /*
2168  * Checks the guard or meta-data for the type of error
2169  * detected by the HBA. In case of errors, we set the
2170  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
2171  * to indicate to the kernel that the HBA detected error.
2172  */
2173 static inline int
2174 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
2175 {
2176         struct scsi_qla_host *vha = sp->vha;
2177         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2178         uint8_t         *ap = &sts24->data[12];
2179         uint8_t         *ep = &sts24->data[20];
2180         uint32_t        e_ref_tag, a_ref_tag;
2181         uint16_t        e_app_tag, a_app_tag;
2182         uint16_t        e_guard, a_guard;
2183
2184         /*
2185          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
2186          * would make guard field appear at offset 2
2187          */
2188         a_guard   = get_unaligned_le16(ap + 2);
2189         a_app_tag = get_unaligned_le16(ap + 0);
2190         a_ref_tag = get_unaligned_le32(ap + 4);
2191         e_guard   = get_unaligned_le16(ep + 2);
2192         e_app_tag = get_unaligned_le16(ep + 0);
2193         e_ref_tag = get_unaligned_le32(ep + 4);
2194
2195         ql_dbg(ql_dbg_io, vha, 0x3023,
2196             "iocb(s) %p Returned STATUS.\n", sts24);
2197
2198         ql_dbg(ql_dbg_io, vha, 0x3024,
2199             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
2200             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
2201             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
2202             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
2203             a_app_tag, e_app_tag, a_guard, e_guard);
2204
2205         /*
2206          * Ignore sector if:
2207          * For type     3: ref & app tag is all 'f's
2208          * For type 0,1,2: app tag is all 'f's
2209          */
2210         if ((a_app_tag == T10_PI_APP_ESCAPE) &&
2211             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
2212              (a_ref_tag == T10_PI_REF_ESCAPE))) {
2213                 uint32_t blocks_done, resid;
2214                 sector_t lba_s = scsi_get_lba(cmd);
2215
2216                 /* 2TB boundary case covered automatically with this */
2217                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
2218
2219                 resid = scsi_bufflen(cmd) - (blocks_done *
2220                     cmd->device->sector_size);
2221
2222                 scsi_set_resid(cmd, resid);
2223                 cmd->result = DID_OK << 16;
2224
2225                 /* Update protection tag */
2226                 if (scsi_prot_sg_count(cmd)) {
2227                         uint32_t i, j = 0, k = 0, num_ent;
2228                         struct scatterlist *sg;
2229                         struct t10_pi_tuple *spt;
2230
2231                         /* Patch the corresponding protection tags */
2232                         scsi_for_each_prot_sg(cmd, sg,
2233                             scsi_prot_sg_count(cmd), i) {
2234                                 num_ent = sg_dma_len(sg) / 8;
2235                                 if (k + num_ent < blocks_done) {
2236                                         k += num_ent;
2237                                         continue;
2238                                 }
2239                                 j = blocks_done - k - 1;
2240                                 k = blocks_done;
2241                                 break;
2242                         }
2243
2244                         if (k != blocks_done) {
2245                                 ql_log(ql_log_warn, vha, 0x302f,
2246                                     "unexpected tag values tag:lba=%x:%llx)\n",
2247                                     e_ref_tag, (unsigned long long)lba_s);
2248                                 return 1;
2249                         }
2250
2251                         spt = page_address(sg_page(sg)) + sg->offset;
2252                         spt += j;
2253
2254                         spt->app_tag = T10_PI_APP_ESCAPE;
2255                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
2256                                 spt->ref_tag = T10_PI_REF_ESCAPE;
2257                 }
2258
2259                 return 0;
2260         }
2261
2262         /* check guard */
2263         if (e_guard != a_guard) {
2264                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2265                     0x10, 0x1);
2266                 set_driver_byte(cmd, DRIVER_SENSE);
2267                 set_host_byte(cmd, DID_ABORT);
2268                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2269                 return 1;
2270         }
2271
2272         /* check ref tag */
2273         if (e_ref_tag != a_ref_tag) {
2274                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2275                     0x10, 0x3);
2276                 set_driver_byte(cmd, DRIVER_SENSE);
2277                 set_host_byte(cmd, DID_ABORT);
2278                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2279                 return 1;
2280         }
2281
2282         /* check appl tag */
2283         if (e_app_tag != a_app_tag) {
2284                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2285                     0x10, 0x2);
2286                 set_driver_byte(cmd, DRIVER_SENSE);
2287                 set_host_byte(cmd, DID_ABORT);
2288                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2289                 return 1;
2290         }
2291
2292         return 1;
2293 }
2294
2295 static void
2296 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
2297                                   struct req_que *req, uint32_t index)
2298 {
2299         struct qla_hw_data *ha = vha->hw;
2300         srb_t *sp;
2301         uint16_t        comp_status;
2302         uint16_t        scsi_status;
2303         uint16_t thread_id;
2304         uint32_t rval = EXT_STATUS_OK;
2305         struct bsg_job *bsg_job = NULL;
2306         struct fc_bsg_request *bsg_request;
2307         struct fc_bsg_reply *bsg_reply;
2308         sts_entry_t *sts = pkt;
2309         struct sts_entry_24xx *sts24 = pkt;
2310
2311         /* Validate handle. */
2312         if (index >= req->num_outstanding_cmds) {
2313                 ql_log(ql_log_warn, vha, 0x70af,
2314                     "Invalid SCSI completion handle 0x%x.\n", index);
2315                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2316                 return;
2317         }
2318
2319         sp = req->outstanding_cmds[index];
2320         if (!sp) {
2321                 ql_log(ql_log_warn, vha, 0x70b0,
2322                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
2323                     req->id, index);
2324
2325                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2326                 return;
2327         }
2328
2329         /* Free outstanding command slot. */
2330         req->outstanding_cmds[index] = NULL;
2331         bsg_job = sp->u.bsg_job;
2332         bsg_request = bsg_job->request;
2333         bsg_reply = bsg_job->reply;
2334
2335         if (IS_FWI2_CAPABLE(ha)) {
2336                 comp_status = le16_to_cpu(sts24->comp_status);
2337                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2338         } else {
2339                 comp_status = le16_to_cpu(sts->comp_status);
2340                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2341         }
2342
2343         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
2344         switch (comp_status) {
2345         case CS_COMPLETE:
2346                 if (scsi_status == 0) {
2347                         bsg_reply->reply_payload_rcv_len =
2348                                         bsg_job->reply_payload.payload_len;
2349                         vha->qla_stats.input_bytes +=
2350                                 bsg_reply->reply_payload_rcv_len;
2351                         vha->qla_stats.input_requests++;
2352                         rval = EXT_STATUS_OK;
2353                 }
2354                 goto done;
2355
2356         case CS_DATA_OVERRUN:
2357                 ql_dbg(ql_dbg_user, vha, 0x70b1,
2358                     "Command completed with data overrun thread_id=%d\n",
2359                     thread_id);
2360                 rval = EXT_STATUS_DATA_OVERRUN;
2361                 break;
2362
2363         case CS_DATA_UNDERRUN:
2364                 ql_dbg(ql_dbg_user, vha, 0x70b2,
2365                     "Command completed with data underrun thread_id=%d\n",
2366                     thread_id);
2367                 rval = EXT_STATUS_DATA_UNDERRUN;
2368                 break;
2369         case CS_BIDIR_RD_OVERRUN:
2370                 ql_dbg(ql_dbg_user, vha, 0x70b3,
2371                     "Command completed with read data overrun thread_id=%d\n",
2372                     thread_id);
2373                 rval = EXT_STATUS_DATA_OVERRUN;
2374                 break;
2375
2376         case CS_BIDIR_RD_WR_OVERRUN:
2377                 ql_dbg(ql_dbg_user, vha, 0x70b4,
2378                     "Command completed with read and write data overrun "
2379                     "thread_id=%d\n", thread_id);
2380                 rval = EXT_STATUS_DATA_OVERRUN;
2381                 break;
2382
2383         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
2384                 ql_dbg(ql_dbg_user, vha, 0x70b5,
2385                     "Command completed with read data over and write data "
2386                     "underrun thread_id=%d\n", thread_id);
2387                 rval = EXT_STATUS_DATA_OVERRUN;
2388                 break;
2389
2390         case CS_BIDIR_RD_UNDERRUN:
2391                 ql_dbg(ql_dbg_user, vha, 0x70b6,
2392                     "Command completed with read data underrun "
2393                     "thread_id=%d\n", thread_id);
2394                 rval = EXT_STATUS_DATA_UNDERRUN;
2395                 break;
2396
2397         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2398                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2399                     "Command completed with read data under and write data "
2400                     "overrun thread_id=%d\n", thread_id);
2401                 rval = EXT_STATUS_DATA_UNDERRUN;
2402                 break;
2403
2404         case CS_BIDIR_RD_WR_UNDERRUN:
2405                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2406                     "Command completed with read and write data underrun "
2407                     "thread_id=%d\n", thread_id);
2408                 rval = EXT_STATUS_DATA_UNDERRUN;
2409                 break;
2410
2411         case CS_BIDIR_DMA:
2412                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2413                     "Command completed with data DMA error thread_id=%d\n",
2414                     thread_id);
2415                 rval = EXT_STATUS_DMA_ERR;
2416                 break;
2417
2418         case CS_TIMEOUT:
2419                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2420                     "Command completed with timeout thread_id=%d\n",
2421                     thread_id);
2422                 rval = EXT_STATUS_TIMEOUT;
2423                 break;
2424         default:
2425                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2426                     "Command completed with completion status=0x%x "
2427                     "thread_id=%d\n", comp_status, thread_id);
2428                 rval = EXT_STATUS_ERR;
2429                 break;
2430         }
2431         bsg_reply->reply_payload_rcv_len = 0;
2432
2433 done:
2434         /* Return the vendor specific reply to API */
2435         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2436         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2437         /* Always return DID_OK, bsg will send the vendor specific response
2438          * in this case only */
2439         sp->done(sp, DID_OK << 16);
2440
2441 }
2442
2443 /**
2444  * qla2x00_status_entry() - Process a Status IOCB entry.
2445  * @vha: SCSI driver HA context
2446  * @rsp: response queue
2447  * @pkt: Entry pointer
2448  */
2449 static void
2450 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2451 {
2452         srb_t           *sp;
2453         fc_port_t       *fcport;
2454         struct scsi_cmnd *cp;
2455         sts_entry_t *sts = pkt;
2456         struct sts_entry_24xx *sts24 = pkt;
2457         uint16_t        comp_status;
2458         uint16_t        scsi_status;
2459         uint16_t        ox_id;
2460         uint8_t         lscsi_status;
2461         int32_t         resid;
2462         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2463             fw_resid_len;
2464         uint8_t         *rsp_info, *sense_data;
2465         struct qla_hw_data *ha = vha->hw;
2466         uint32_t handle;
2467         uint16_t que;
2468         struct req_que *req;
2469         int logit = 1;
2470         int res = 0;
2471         uint16_t state_flags = 0;
2472         uint16_t retry_delay = 0;
2473
2474         if (IS_FWI2_CAPABLE(ha)) {
2475                 comp_status = le16_to_cpu(sts24->comp_status);
2476                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2477                 state_flags = le16_to_cpu(sts24->state_flags);
2478         } else {
2479                 comp_status = le16_to_cpu(sts->comp_status);
2480                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2481         }
2482         handle = (uint32_t) LSW(sts->handle);
2483         que = MSW(sts->handle);
2484         req = ha->req_q_map[que];
2485
2486         /* Check for invalid queue pointer */
2487         if (req == NULL ||
2488             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2489                 ql_dbg(ql_dbg_io, vha, 0x3059,
2490                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2491                     "que=%u.\n", sts->handle, req, que);
2492                 return;
2493         }
2494
2495         /* Validate handle. */
2496         if (handle < req->num_outstanding_cmds) {
2497                 sp = req->outstanding_cmds[handle];
2498                 if (!sp) {
2499                         ql_dbg(ql_dbg_io, vha, 0x3075,
2500                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2501                             __func__, vha->host_no, sts->handle);
2502                         return;
2503                 }
2504         } else {
2505                 ql_dbg(ql_dbg_io, vha, 0x3017,
2506                     "Invalid status handle, out of range (0x%x).\n",
2507                     sts->handle);
2508
2509                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2510                         if (IS_P3P_TYPE(ha))
2511                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2512                         else
2513                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2514                         qla2xxx_wake_dpc(vha);
2515                 }
2516                 return;
2517         }
2518
2519         if (sp->abort)
2520                 sp->aborted = 1;
2521         else
2522                 sp->completed = 1;
2523
2524         if (sp->cmd_type != TYPE_SRB) {
2525                 req->outstanding_cmds[handle] = NULL;
2526                 ql_dbg(ql_dbg_io, vha, 0x3015,
2527                     "Unknown sp->cmd_type %x %p).\n",
2528                     sp->cmd_type, sp);
2529                 return;
2530         }
2531
2532         /* NVME completion. */
2533         if (sp->type == SRB_NVME_CMD) {
2534                 req->outstanding_cmds[handle] = NULL;
2535                 qla24xx_nvme_iocb_entry(vha, req, pkt, sp);
2536                 return;
2537         }
2538
2539         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2540                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2541                 return;
2542         }
2543
2544         /* Task Management completion. */
2545         if (sp->type == SRB_TM_CMD) {
2546                 qla24xx_tm_iocb_entry(vha, req, pkt);
2547                 return;
2548         }
2549
2550         /* Fast path completion. */
2551         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2552                 qla2x00_process_completed_request(vha, req, handle);
2553
2554                 return;
2555         }
2556
2557         req->outstanding_cmds[handle] = NULL;
2558         cp = GET_CMD_SP(sp);
2559         if (cp == NULL) {
2560                 ql_dbg(ql_dbg_io, vha, 0x3018,
2561                     "Command already returned (0x%x/%p).\n",
2562                     sts->handle, sp);
2563
2564                 return;
2565         }
2566
2567         lscsi_status = scsi_status & STATUS_MASK;
2568
2569         fcport = sp->fcport;
2570
2571         ox_id = 0;
2572         sense_len = par_sense_len = rsp_info_len = resid_len =
2573             fw_resid_len = 0;
2574         if (IS_FWI2_CAPABLE(ha)) {
2575                 if (scsi_status & SS_SENSE_LEN_VALID)
2576                         sense_len = le32_to_cpu(sts24->sense_len);
2577                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2578                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2579                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2580                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2581                 if (comp_status == CS_DATA_UNDERRUN)
2582                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2583                 rsp_info = sts24->data;
2584                 sense_data = sts24->data;
2585                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2586                 ox_id = le16_to_cpu(sts24->ox_id);
2587                 par_sense_len = sizeof(sts24->data);
2588                 /* Valid values of the retry delay timer are 0x1-0xffef */
2589                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1) {
2590                         retry_delay = sts24->retry_delay & 0x3fff;
2591                         ql_dbg(ql_dbg_io, sp->vha, 0x3033,
2592                             "%s: scope=%#x retry_delay=%#x\n", __func__,
2593                             sts24->retry_delay >> 14, retry_delay);
2594                 }
2595         } else {
2596                 if (scsi_status & SS_SENSE_LEN_VALID)
2597                         sense_len = le16_to_cpu(sts->req_sense_length);
2598                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2599                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2600                 resid_len = le32_to_cpu(sts->residual_length);
2601                 rsp_info = sts->rsp_info;
2602                 sense_data = sts->req_sense_data;
2603                 par_sense_len = sizeof(sts->req_sense_data);
2604         }
2605
2606         /* Check for any FCP transport errors. */
2607         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2608                 /* Sense data lies beyond any FCP RESPONSE data. */
2609                 if (IS_FWI2_CAPABLE(ha)) {
2610                         sense_data += rsp_info_len;
2611                         par_sense_len -= rsp_info_len;
2612                 }
2613                 if (rsp_info_len > 3 && rsp_info[3]) {
2614                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2615                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2616                             rsp_info_len, rsp_info[3]);
2617
2618                         res = DID_BUS_BUSY << 16;
2619                         goto out;
2620                 }
2621         }
2622
2623         /* Check for overrun. */
2624         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2625             scsi_status & SS_RESIDUAL_OVER)
2626                 comp_status = CS_DATA_OVERRUN;
2627
2628         /*
2629          * Check retry_delay_timer value if we receive a busy or
2630          * queue full.
2631          */
2632         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2633             lscsi_status == SAM_STAT_BUSY)
2634                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2635
2636         /*
2637          * Based on Host and scsi status generate status code for Linux
2638          */
2639         switch (comp_status) {
2640         case CS_COMPLETE:
2641         case CS_QUEUE_FULL:
2642                 if (scsi_status == 0) {
2643                         res = DID_OK << 16;
2644                         break;
2645                 }
2646                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2647                         resid = resid_len;
2648                         scsi_set_resid(cp, resid);
2649
2650                         if (!lscsi_status &&
2651                             ((unsigned)(scsi_bufflen(cp) - resid) <
2652                              cp->underflow)) {
2653                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2654                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2655                                     resid, scsi_bufflen(cp));
2656
2657                                 res = DID_ERROR << 16;
2658                                 break;
2659                         }
2660                 }
2661                 res = DID_OK << 16 | lscsi_status;
2662
2663                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2664                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2665                             "QUEUE FULL detected.\n");
2666                         break;
2667                 }
2668                 logit = 0;
2669                 if (lscsi_status != SS_CHECK_CONDITION)
2670                         break;
2671
2672                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2673                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2674                         break;
2675
2676                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2677                     rsp, res);
2678                 break;
2679
2680         case CS_DATA_UNDERRUN:
2681                 /* Use F/W calculated residual length. */
2682                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2683                 scsi_set_resid(cp, resid);
2684                 if (scsi_status & SS_RESIDUAL_UNDER) {
2685                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2686                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2687                                     "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2688                                     resid, scsi_bufflen(cp));
2689
2690                                 res = DID_ERROR << 16 | lscsi_status;
2691                                 goto check_scsi_status;
2692                         }
2693
2694                         if (!lscsi_status &&
2695                             ((unsigned)(scsi_bufflen(cp) - resid) <
2696                             cp->underflow)) {
2697                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2698                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2699                                     resid, scsi_bufflen(cp));
2700
2701                                 res = DID_ERROR << 16;
2702                                 break;
2703                         }
2704                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2705                             lscsi_status != SAM_STAT_BUSY) {
2706                         /*
2707                          * scsi status of task set and busy are considered to be
2708                          * task not completed.
2709                          */
2710
2711                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2712                             "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2713                             resid, scsi_bufflen(cp));
2714
2715                         res = DID_ERROR << 16 | lscsi_status;
2716                         goto check_scsi_status;
2717                 } else {
2718                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2719                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2720                             scsi_status, lscsi_status);
2721                 }
2722
2723                 res = DID_OK << 16 | lscsi_status;
2724                 logit = 0;
2725
2726 check_scsi_status:
2727                 /*
2728                  * Check to see if SCSI Status is non zero. If so report SCSI
2729                  * Status.
2730                  */
2731                 if (lscsi_status != 0) {
2732                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2733                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2734                                     "QUEUE FULL detected.\n");
2735                                 logit = 1;
2736                                 break;
2737                         }
2738                         if (lscsi_status != SS_CHECK_CONDITION)
2739                                 break;
2740
2741                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2742                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2743                                 break;
2744
2745                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2746                             sense_len, rsp, res);
2747                 }
2748                 break;
2749
2750         case CS_PORT_LOGGED_OUT:
2751         case CS_PORT_CONFIG_CHG:
2752         case CS_PORT_BUSY:
2753         case CS_INCOMPLETE:
2754         case CS_PORT_UNAVAILABLE:
2755         case CS_TIMEOUT:
2756         case CS_RESET:
2757
2758                 /*
2759                  * We are going to have the fc class block the rport
2760                  * while we try to recover so instruct the mid layer
2761                  * to requeue until the class decides how to handle this.
2762                  */
2763                 res = DID_TRANSPORT_DISRUPTED << 16;
2764
2765                 if (comp_status == CS_TIMEOUT) {
2766                         if (IS_FWI2_CAPABLE(ha))
2767                                 break;
2768                         else if ((le16_to_cpu(sts->status_flags) &
2769                             SF_LOGOUT_SENT) == 0)
2770                                 break;
2771                 }
2772
2773                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
2774                         ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
2775                                 "Port to be marked lost on fcport=%02x%02x%02x, current "
2776                                 "port state= %s comp_status %x.\n", fcport->d_id.b.domain,
2777                                 fcport->d_id.b.area, fcport->d_id.b.al_pa,
2778                                 port_state_str[FCS_ONLINE],
2779                                 comp_status);
2780
2781                         qlt_schedule_sess_for_deletion(fcport);
2782                 }
2783
2784                 break;
2785
2786         case CS_ABORTED:
2787                 res = DID_RESET << 16;
2788                 break;
2789
2790         case CS_DIF_ERROR:
2791                 logit = qla2x00_handle_dif_error(sp, sts24);
2792                 res = cp->result;
2793                 break;
2794
2795         case CS_TRANSPORT:
2796                 res = DID_ERROR << 16;
2797
2798                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2799                         break;
2800
2801                 if (state_flags & BIT_4)
2802                         scmd_printk(KERN_WARNING, cp,
2803                             "Unsupported device '%s' found.\n",
2804                             cp->device->vendor);
2805                 break;
2806
2807         case CS_DMA:
2808                 ql_log(ql_log_info, fcport->vha, 0x3022,
2809                     "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",
2810                     comp_status, scsi_status, res, vha->host_no,
2811                     cp->device->id, cp->device->lun, fcport->d_id.b24,
2812                     ox_id, cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2813                     resid_len, fw_resid_len, sp, cp);
2814                 ql_dump_buffer(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe0ee,
2815                     pkt, sizeof(*sts24));
2816                 res = DID_ERROR << 16;
2817                 break;
2818         default:
2819                 res = DID_ERROR << 16;
2820                 break;
2821         }
2822
2823 out:
2824         if (logit)
2825                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2826                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2827                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2828                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2829                     comp_status, scsi_status, res, vha->host_no,
2830                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2831                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2832                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2833                     resid_len, fw_resid_len, sp, cp);
2834
2835         if (rsp->status_srb == NULL)
2836                 sp->done(sp, res);
2837 }
2838
2839 /**
2840  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2841  * @rsp: response queue
2842  * @pkt: Entry pointer
2843  *
2844  * Extended sense data.
2845  */
2846 static void
2847 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2848 {
2849         uint8_t sense_sz = 0;
2850         struct qla_hw_data *ha = rsp->hw;
2851         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2852         srb_t *sp = rsp->status_srb;
2853         struct scsi_cmnd *cp;
2854         uint32_t sense_len;
2855         uint8_t *sense_ptr;
2856
2857         if (!sp || !GET_CMD_SENSE_LEN(sp))
2858                 return;
2859
2860         sense_len = GET_CMD_SENSE_LEN(sp);
2861         sense_ptr = GET_CMD_SENSE_PTR(sp);
2862
2863         cp = GET_CMD_SP(sp);
2864         if (cp == NULL) {
2865                 ql_log(ql_log_warn, vha, 0x3025,
2866                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2867
2868                 rsp->status_srb = NULL;
2869                 return;
2870         }
2871
2872         if (sense_len > sizeof(pkt->data))
2873                 sense_sz = sizeof(pkt->data);
2874         else
2875                 sense_sz = sense_len;
2876
2877         /* Move sense data. */
2878         if (IS_FWI2_CAPABLE(ha))
2879                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2880         memcpy(sense_ptr, pkt->data, sense_sz);
2881         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2882                 sense_ptr, sense_sz);
2883
2884         sense_len -= sense_sz;
2885         sense_ptr += sense_sz;
2886
2887         SET_CMD_SENSE_PTR(sp, sense_ptr);
2888         SET_CMD_SENSE_LEN(sp, sense_len);
2889
2890         /* Place command on done queue. */
2891         if (sense_len == 0) {
2892                 rsp->status_srb = NULL;
2893                 sp->done(sp, cp->result);
2894         }
2895 }
2896
2897 /**
2898  * qla2x00_error_entry() - Process an error entry.
2899  * @vha: SCSI driver HA context
2900  * @rsp: response queue
2901  * @pkt: Entry pointer
2902  * return : 1=allow further error analysis. 0=no additional error analysis.
2903  */
2904 static int
2905 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2906 {
2907         srb_t *sp;
2908         struct qla_hw_data *ha = vha->hw;
2909         const char func[] = "ERROR-IOCB";
2910         uint16_t que = MSW(pkt->handle);
2911         struct req_que *req = NULL;
2912         int res = DID_ERROR << 16;
2913
2914         ql_dbg(ql_dbg_async, vha, 0x502a,
2915             "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
2916             pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
2917
2918         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2919                 goto fatal;
2920
2921         req = ha->req_q_map[que];
2922
2923         if (pkt->entry_status & RF_BUSY)
2924                 res = DID_BUS_BUSY << 16;
2925
2926         if ((pkt->handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE)
2927                 return 0;
2928
2929         switch (pkt->entry_type) {
2930         case NOTIFY_ACK_TYPE:
2931         case STATUS_TYPE:
2932         case STATUS_CONT_TYPE:
2933         case LOGINOUT_PORT_IOCB_TYPE:
2934         case CT_IOCB_TYPE:
2935         case ELS_IOCB_TYPE:
2936         case ABORT_IOCB_TYPE:
2937         case MBX_IOCB_TYPE:
2938         default:
2939                 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2940                 if (sp) {
2941                         sp->done(sp, res);
2942                         return 0;
2943                 }
2944                 break;
2945
2946         case ABTS_RESP_24XX:
2947         case CTIO_TYPE7:
2948         case CTIO_CRC2:
2949                 return 1;
2950         }
2951 fatal:
2952         ql_log(ql_log_warn, vha, 0x5030,
2953             "Error entry - invalid handle/queue (%04x).\n", que);
2954         return 0;
2955 }
2956
2957 /**
2958  * qla24xx_mbx_completion() - Process mailbox command completions.
2959  * @vha: SCSI driver HA context
2960  * @mb0: Mailbox0 register
2961  */
2962 static void
2963 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2964 {
2965         uint16_t        cnt;
2966         uint32_t        mboxes;
2967         uint16_t __iomem *wptr;
2968         struct qla_hw_data *ha = vha->hw;
2969         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2970
2971         /* Read all mbox registers? */
2972         WARN_ON_ONCE(ha->mbx_count > 32);
2973         mboxes = (1ULL << ha->mbx_count) - 1;
2974         if (!ha->mcp)
2975                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2976         else
2977                 mboxes = ha->mcp->in_mb;
2978
2979         /* Load return mailbox registers. */
2980         ha->flags.mbox_int = 1;
2981         ha->mailbox_out[0] = mb0;
2982         mboxes >>= 1;
2983         wptr = (uint16_t __iomem *)&reg->mailbox1;
2984
2985         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2986                 if (mboxes & BIT_0)
2987                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2988
2989                 mboxes >>= 1;
2990                 wptr++;
2991         }
2992 }
2993
2994 static void
2995 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2996         struct abort_entry_24xx *pkt)
2997 {
2998         const char func[] = "ABT_IOCB";
2999         srb_t *sp;
3000         struct srb_iocb *abt;
3001
3002         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
3003         if (!sp)
3004                 return;
3005
3006         abt = &sp->u.iocb_cmd;
3007         abt->u.abt.comp_status = le16_to_cpu(pkt->nport_handle);
3008         sp->done(sp, 0);
3009 }
3010
3011 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
3012     struct pt_ls4_request *pkt, struct req_que *req)
3013 {
3014         srb_t *sp;
3015         const char func[] = "LS4_IOCB";
3016         uint16_t comp_status;
3017
3018         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
3019         if (!sp)
3020                 return;
3021
3022         comp_status = le16_to_cpu(pkt->status);
3023         sp->done(sp, comp_status);
3024 }
3025
3026 /**
3027  * qla24xx_process_response_queue() - Process response queue entries.
3028  * @vha: SCSI driver HA context
3029  * @rsp: response queue
3030  */
3031 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
3032         struct rsp_que *rsp)
3033 {
3034         struct sts_entry_24xx *pkt;
3035         struct qla_hw_data *ha = vha->hw;
3036
3037         if (!ha->flags.fw_started)
3038                 return;
3039
3040         if (rsp->qpair->cpuid != smp_processor_id())
3041                 qla_cpu_update(rsp->qpair, smp_processor_id());
3042
3043         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
3044                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
3045
3046                 rsp->ring_index++;
3047                 if (rsp->ring_index == rsp->length) {
3048                         rsp->ring_index = 0;
3049                         rsp->ring_ptr = rsp->ring;
3050                 } else {
3051                         rsp->ring_ptr++;
3052                 }
3053
3054                 if (pkt->entry_status != 0) {
3055                         if (qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt))
3056                                 goto process_err;
3057
3058                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3059                         wmb();
3060                         continue;
3061                 }
3062 process_err:
3063
3064                 switch (pkt->entry_type) {
3065                 case STATUS_TYPE:
3066                         qla2x00_status_entry(vha, rsp, pkt);
3067                         break;
3068                 case STATUS_CONT_TYPE:
3069                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
3070                         break;
3071                 case VP_RPT_ID_IOCB_TYPE:
3072                         qla24xx_report_id_acquisition(vha,
3073                             (struct vp_rpt_id_entry_24xx *)pkt);
3074                         break;
3075                 case LOGINOUT_PORT_IOCB_TYPE:
3076                         qla24xx_logio_entry(vha, rsp->req,
3077                             (struct logio_entry_24xx *)pkt);
3078                         break;
3079                 case CT_IOCB_TYPE:
3080                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
3081                         break;
3082                 case ELS_IOCB_TYPE:
3083                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
3084                         break;
3085                 case ABTS_RECV_24XX:
3086                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
3087                             IS_QLA28XX(ha)) {
3088                                 /* ensure that the ATIO queue is empty */
3089                                 qlt_handle_abts_recv(vha, rsp,
3090                                     (response_t *)pkt);
3091                                 break;
3092                         } else {
3093                                 qlt_24xx_process_atio_queue(vha, 1);
3094                         }
3095                         /* fall through */
3096                 case ABTS_RESP_24XX:
3097                 case CTIO_TYPE7:
3098                 case CTIO_CRC2:
3099                         qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
3100                         break;
3101                 case PT_LS4_REQUEST:
3102                         qla24xx_nvme_ls4_iocb(vha, (struct pt_ls4_request *)pkt,
3103                             rsp->req);
3104                         break;
3105                 case NOTIFY_ACK_TYPE:
3106                         if (pkt->handle == QLA_TGT_SKIP_HANDLE)
3107                                 qlt_response_pkt_all_vps(vha, rsp,
3108                                     (response_t *)pkt);
3109                         else
3110                                 qla24xxx_nack_iocb_entry(vha, rsp->req,
3111                                         (struct nack_to_isp *)pkt);
3112                         break;
3113                 case MARKER_TYPE:
3114                         /* Do nothing in this case, this check is to prevent it
3115                          * from falling into default case
3116                          */
3117                         break;
3118                 case ABORT_IOCB_TYPE:
3119                         qla24xx_abort_iocb_entry(vha, rsp->req,
3120                             (struct abort_entry_24xx *)pkt);
3121                         break;
3122                 case MBX_IOCB_TYPE:
3123                         qla24xx_mbx_iocb_entry(vha, rsp->req,
3124                             (struct mbx_24xx_entry *)pkt);
3125                         break;
3126                 case VP_CTRL_IOCB_TYPE:
3127                         qla_ctrlvp_completed(vha, rsp->req,
3128                             (struct vp_ctrl_entry_24xx *)pkt);
3129                         break;
3130                 default:
3131                         /* Type Not Supported. */
3132                         ql_dbg(ql_dbg_async, vha, 0x5042,
3133                             "Received unknown response pkt type %x "
3134                             "entry status=%x.\n",
3135                             pkt->entry_type, pkt->entry_status);
3136                         break;
3137                 }
3138                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3139                 wmb();
3140         }
3141
3142         /* Adjust ring index */
3143         if (IS_P3P_TYPE(ha)) {
3144                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
3145
3146                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
3147         } else {
3148                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
3149         }
3150 }
3151
3152 static void
3153 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
3154 {
3155         int rval;
3156         uint32_t cnt;
3157         struct qla_hw_data *ha = vha->hw;
3158         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3159
3160         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
3161             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3162                 return;
3163
3164         rval = QLA_SUCCESS;
3165         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
3166         RD_REG_DWORD(&reg->iobase_addr);
3167         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3168         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3169             rval == QLA_SUCCESS; cnt--) {
3170                 if (cnt) {
3171                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3172                         udelay(10);
3173                 } else
3174                         rval = QLA_FUNCTION_TIMEOUT;
3175         }
3176         if (rval == QLA_SUCCESS)
3177                 goto next_test;
3178
3179         rval = QLA_SUCCESS;
3180         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3181         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3182             rval == QLA_SUCCESS; cnt--) {
3183                 if (cnt) {
3184                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3185                         udelay(10);
3186                 } else
3187                         rval = QLA_FUNCTION_TIMEOUT;
3188         }
3189         if (rval != QLA_SUCCESS)
3190                 goto done;
3191
3192 next_test:
3193         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
3194                 ql_log(ql_log_info, vha, 0x504c,
3195                     "Additional code -- 0x55AA.\n");
3196
3197 done:
3198         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
3199         RD_REG_DWORD(&reg->iobase_window);
3200 }
3201
3202 /**
3203  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
3204  * @irq: interrupt number
3205  * @dev_id: SCSI driver HA context
3206  *
3207  * Called by system whenever the host adapter generates an interrupt.
3208  *
3209  * Returns handled flag.
3210  */
3211 irqreturn_t
3212 qla24xx_intr_handler(int irq, void *dev_id)
3213 {
3214         scsi_qla_host_t *vha;
3215         struct qla_hw_data *ha;
3216         struct device_reg_24xx __iomem *reg;
3217         int             status;
3218         unsigned long   iter;
3219         uint32_t        stat;
3220         uint32_t        hccr;
3221         uint16_t        mb[8];
3222         struct rsp_que *rsp;
3223         unsigned long   flags;
3224         bool process_atio = false;
3225
3226         rsp = (struct rsp_que *) dev_id;
3227         if (!rsp) {
3228                 ql_log(ql_log_info, NULL, 0x5059,
3229                     "%s: NULL response queue pointer.\n", __func__);
3230                 return IRQ_NONE;
3231         }
3232
3233         ha = rsp->hw;
3234         reg = &ha->iobase->isp24;
3235         status = 0;
3236
3237         if (unlikely(pci_channel_offline(ha->pdev)))
3238                 return IRQ_HANDLED;
3239
3240         spin_lock_irqsave(&ha->hardware_lock, flags);
3241         vha = pci_get_drvdata(ha->pdev);
3242         for (iter = 50; iter--; ) {
3243                 stat = RD_REG_DWORD(&reg->host_status);
3244                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3245                         break;
3246                 if (stat & HSRX_RISC_PAUSED) {
3247                         if (unlikely(pci_channel_offline(ha->pdev)))
3248                                 break;
3249
3250                         hccr = RD_REG_DWORD(&reg->hccr);
3251
3252                         ql_log(ql_log_warn, vha, 0x504b,
3253                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3254                             hccr);
3255
3256                         qla2xxx_check_risc_status(vha);
3257
3258                         ha->isp_ops->fw_dump(vha, 1);
3259                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3260                         break;
3261                 } else if ((stat & HSRX_RISC_INT) == 0)
3262                         break;
3263
3264                 switch (stat & 0xff) {
3265                 case INTR_ROM_MB_SUCCESS:
3266                 case INTR_ROM_MB_FAILED:
3267                 case INTR_MB_SUCCESS:
3268                 case INTR_MB_FAILED:
3269                         qla24xx_mbx_completion(vha, MSW(stat));
3270                         status |= MBX_INTERRUPT;
3271
3272                         break;
3273                 case INTR_ASYNC_EVENT:
3274                         mb[0] = MSW(stat);
3275                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3276                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3277                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3278                         qla2x00_async_event(vha, rsp, mb);
3279                         break;
3280                 case INTR_RSP_QUE_UPDATE:
3281                 case INTR_RSP_QUE_UPDATE_83XX:
3282                         qla24xx_process_response_queue(vha, rsp);
3283                         break;
3284                 case INTR_ATIO_QUE_UPDATE_27XX:
3285                 case INTR_ATIO_QUE_UPDATE:
3286                         process_atio = true;
3287                         break;
3288                 case INTR_ATIO_RSP_QUE_UPDATE:
3289                         process_atio = true;
3290                         qla24xx_process_response_queue(vha, rsp);
3291                         break;
3292                 default:
3293                         ql_dbg(ql_dbg_async, vha, 0x504f,
3294                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
3295                         break;
3296                 }
3297                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3298                 RD_REG_DWORD_RELAXED(&reg->hccr);
3299                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
3300                         ndelay(3500);
3301         }
3302         qla2x00_handle_mbx_completion(ha, status);
3303         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3304
3305         if (process_atio) {
3306                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3307                 qlt_24xx_process_atio_queue(vha, 0);
3308                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3309         }
3310
3311         return IRQ_HANDLED;
3312 }
3313
3314 static irqreturn_t
3315 qla24xx_msix_rsp_q(int irq, void *dev_id)
3316 {
3317         struct qla_hw_data *ha;
3318         struct rsp_que *rsp;
3319         struct device_reg_24xx __iomem *reg;
3320         struct scsi_qla_host *vha;
3321         unsigned long flags;
3322
3323         rsp = (struct rsp_que *) dev_id;
3324         if (!rsp) {
3325                 ql_log(ql_log_info, NULL, 0x505a,
3326                     "%s: NULL response queue pointer.\n", __func__);
3327                 return IRQ_NONE;
3328         }
3329         ha = rsp->hw;
3330         reg = &ha->iobase->isp24;
3331
3332         spin_lock_irqsave(&ha->hardware_lock, flags);
3333
3334         vha = pci_get_drvdata(ha->pdev);
3335         qla24xx_process_response_queue(vha, rsp);
3336         if (!ha->flags.disable_msix_handshake) {
3337                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3338                 RD_REG_DWORD_RELAXED(&reg->hccr);
3339         }
3340         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3341
3342         return IRQ_HANDLED;
3343 }
3344
3345 static irqreturn_t
3346 qla24xx_msix_default(int irq, void *dev_id)
3347 {
3348         scsi_qla_host_t *vha;
3349         struct qla_hw_data *ha;
3350         struct rsp_que *rsp;
3351         struct device_reg_24xx __iomem *reg;
3352         int             status;
3353         uint32_t        stat;
3354         uint32_t        hccr;
3355         uint16_t        mb[8];
3356         unsigned long flags;
3357         bool process_atio = false;
3358
3359         rsp = (struct rsp_que *) dev_id;
3360         if (!rsp) {
3361                 ql_log(ql_log_info, NULL, 0x505c,
3362                     "%s: NULL response queue pointer.\n", __func__);
3363                 return IRQ_NONE;
3364         }
3365         ha = rsp->hw;
3366         reg = &ha->iobase->isp24;
3367         status = 0;
3368
3369         spin_lock_irqsave(&ha->hardware_lock, flags);
3370         vha = pci_get_drvdata(ha->pdev);
3371         do {
3372                 stat = RD_REG_DWORD(&reg->host_status);
3373                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3374                         break;
3375                 if (stat & HSRX_RISC_PAUSED) {
3376                         if (unlikely(pci_channel_offline(ha->pdev)))
3377                                 break;
3378
3379                         hccr = RD_REG_DWORD(&reg->hccr);
3380
3381                         ql_log(ql_log_info, vha, 0x5050,
3382                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3383                             hccr);
3384
3385                         qla2xxx_check_risc_status(vha);
3386
3387                         ha->isp_ops->fw_dump(vha, 1);
3388                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3389                         break;
3390                 } else if ((stat & HSRX_RISC_INT) == 0)
3391                         break;
3392
3393                 switch (stat & 0xff) {
3394                 case INTR_ROM_MB_SUCCESS:
3395                 case INTR_ROM_MB_FAILED:
3396                 case INTR_MB_SUCCESS:
3397                 case INTR_MB_FAILED:
3398                         qla24xx_mbx_completion(vha, MSW(stat));
3399                         status |= MBX_INTERRUPT;
3400
3401                         break;
3402                 case INTR_ASYNC_EVENT:
3403                         mb[0] = MSW(stat);
3404                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3405                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3406                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3407                         qla2x00_async_event(vha, rsp, mb);
3408                         break;
3409                 case INTR_RSP_QUE_UPDATE:
3410                 case INTR_RSP_QUE_UPDATE_83XX:
3411                         qla24xx_process_response_queue(vha, rsp);
3412                         break;
3413                 case INTR_ATIO_QUE_UPDATE_27XX:
3414                 case INTR_ATIO_QUE_UPDATE:
3415                         process_atio = true;
3416                         break;
3417                 case INTR_ATIO_RSP_QUE_UPDATE:
3418                         process_atio = true;
3419                         qla24xx_process_response_queue(vha, rsp);
3420                         break;
3421                 default:
3422                         ql_dbg(ql_dbg_async, vha, 0x5051,
3423                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
3424                         break;
3425                 }
3426                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3427         } while (0);
3428         qla2x00_handle_mbx_completion(ha, status);
3429         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3430
3431         if (process_atio) {
3432                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3433                 qlt_24xx_process_atio_queue(vha, 0);
3434                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3435         }
3436
3437         return IRQ_HANDLED;
3438 }
3439
3440 irqreturn_t
3441 qla2xxx_msix_rsp_q(int irq, void *dev_id)
3442 {
3443         struct qla_hw_data *ha;
3444         struct qla_qpair *qpair;
3445         struct device_reg_24xx __iomem *reg;
3446         unsigned long flags;
3447
3448         qpair = dev_id;
3449         if (!qpair) {
3450                 ql_log(ql_log_info, NULL, 0x505b,
3451                     "%s: NULL response queue pointer.\n", __func__);
3452                 return IRQ_NONE;
3453         }
3454         ha = qpair->hw;
3455
3456         /* Clear the interrupt, if enabled, for this response queue */
3457         if (unlikely(!ha->flags.disable_msix_handshake)) {
3458                 reg = &ha->iobase->isp24;
3459                 spin_lock_irqsave(&ha->hardware_lock, flags);
3460                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3461                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3462         }
3463
3464         queue_work(ha->wq, &qpair->q_work);
3465
3466         return IRQ_HANDLED;
3467 }
3468
3469 /* Interrupt handling helpers. */
3470
3471 struct qla_init_msix_entry {
3472         const char *name;
3473         irq_handler_t handler;
3474 };
3475
3476 static const struct qla_init_msix_entry msix_entries[] = {
3477         { "default", qla24xx_msix_default },
3478         { "rsp_q", qla24xx_msix_rsp_q },
3479         { "atio_q", qla83xx_msix_atio_q },
3480         { "qpair_multiq", qla2xxx_msix_rsp_q },
3481 };
3482
3483 static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
3484         { "qla2xxx (default)", qla82xx_msix_default },
3485         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3486 };
3487
3488 static int
3489 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3490 {
3491         int i, ret;
3492         struct qla_msix_entry *qentry;
3493         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3494         int min_vecs = QLA_BASE_VECTORS;
3495         struct irq_affinity desc = {
3496                 .pre_vectors = QLA_BASE_VECTORS,
3497         };
3498
3499         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3500             IS_ATIO_MSIX_CAPABLE(ha)) {
3501                 desc.pre_vectors++;
3502                 min_vecs++;
3503         }
3504
3505         if (USER_CTRL_IRQ(ha) || !ha->mqiobase) {
3506                 /* user wants to control IRQ setting for target mode */
3507                 ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
3508                     ha->msix_count, PCI_IRQ_MSIX);
3509         } else
3510                 ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
3511                     ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3512                     &desc);
3513
3514         if (ret < 0) {
3515                 ql_log(ql_log_fatal, vha, 0x00c7,
3516                     "MSI-X: Failed to enable support, "
3517                     "giving   up -- %d/%d.\n",
3518                     ha->msix_count, ret);
3519                 goto msix_out;
3520         } else if (ret < ha->msix_count) {
3521                 ql_log(ql_log_info, vha, 0x00c6,
3522                     "MSI-X: Using %d vectors\n", ret);
3523                 ha->msix_count = ret;
3524                 /* Recalculate queue values */
3525                 if (ha->mqiobase && (ql2xmqsupport || ql2xnvmeenable)) {
3526                         ha->max_req_queues = ha->msix_count - 1;
3527
3528                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3529                         if (QLA_TGT_MODE_ENABLED())
3530                                 ha->max_req_queues--;
3531
3532                         ha->max_rsp_queues = ha->max_req_queues;
3533
3534                         ha->max_qpairs = ha->max_req_queues - 1;
3535                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3536                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3537                 }
3538         }
3539         vha->irq_offset = desc.pre_vectors;
3540         ha->msix_entries = kcalloc(ha->msix_count,
3541                                    sizeof(struct qla_msix_entry),
3542                                    GFP_KERNEL);
3543         if (!ha->msix_entries) {
3544                 ql_log(ql_log_fatal, vha, 0x00c8,
3545                     "Failed to allocate memory for ha->msix_entries.\n");
3546                 ret = -ENOMEM;
3547                 goto free_irqs;
3548         }
3549         ha->flags.msix_enabled = 1;
3550
3551         for (i = 0; i < ha->msix_count; i++) {
3552                 qentry = &ha->msix_entries[i];
3553                 qentry->vector = pci_irq_vector(ha->pdev, i);
3554                 qentry->entry = i;
3555                 qentry->have_irq = 0;
3556                 qentry->in_use = 0;
3557                 qentry->handle = NULL;
3558         }
3559
3560         /* Enable MSI-X vectors for the base queue */
3561         for (i = 0; i < QLA_BASE_VECTORS; i++) {
3562                 qentry = &ha->msix_entries[i];
3563                 qentry->handle = rsp;
3564                 rsp->msix = qentry;
3565                 scnprintf(qentry->name, sizeof(qentry->name),
3566                     "qla2xxx%lu_%s", vha->host_no, msix_entries[i].name);
3567                 if (IS_P3P_TYPE(ha))
3568                         ret = request_irq(qentry->vector,
3569                                 qla82xx_msix_entries[i].handler,
3570                                 0, qla82xx_msix_entries[i].name, rsp);
3571                 else
3572                         ret = request_irq(qentry->vector,
3573                                 msix_entries[i].handler,
3574                                 0, qentry->name, rsp);
3575                 if (ret)
3576                         goto msix_register_fail;
3577                 qentry->have_irq = 1;
3578                 qentry->in_use = 1;
3579         }
3580
3581         /*
3582          * If target mode is enable, also request the vector for the ATIO
3583          * queue.
3584          */
3585         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3586             IS_ATIO_MSIX_CAPABLE(ha)) {
3587                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
3588                 rsp->msix = qentry;
3589                 qentry->handle = rsp;
3590                 scnprintf(qentry->name, sizeof(qentry->name),
3591                     "qla2xxx%lu_%s", vha->host_no,
3592                     msix_entries[QLA_ATIO_VECTOR].name);
3593                 qentry->in_use = 1;
3594                 ret = request_irq(qentry->vector,
3595                         msix_entries[QLA_ATIO_VECTOR].handler,
3596                         0, qentry->name, rsp);
3597                 qentry->have_irq = 1;
3598         }
3599
3600 msix_register_fail:
3601         if (ret) {
3602                 ql_log(ql_log_fatal, vha, 0x00cb,
3603                     "MSI-X: unable to register handler -- %x/%d.\n",
3604                     qentry->vector, ret);
3605                 qla2x00_free_irqs(vha);
3606                 ha->mqenable = 0;
3607                 goto msix_out;
3608         }
3609
3610         /* Enable MSI-X vector for response queue update for queue 0 */
3611         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
3612                 if (ha->msixbase && ha->mqiobase &&
3613                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3614                      ql2xmqsupport))
3615                         ha->mqenable = 1;
3616         } else
3617                 if (ha->mqiobase &&
3618                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3619                      ql2xmqsupport))
3620                         ha->mqenable = 1;
3621         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3622             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3623             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3624         ql_dbg(ql_dbg_init, vha, 0x0055,
3625             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3626             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3627
3628 msix_out:
3629         return ret;
3630
3631 free_irqs:
3632         pci_free_irq_vectors(ha->pdev);
3633         goto msix_out;
3634 }
3635
3636 int
3637 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3638 {
3639         int ret = QLA_FUNCTION_FAILED;
3640         device_reg_t *reg = ha->iobase;
3641         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3642
3643         /* If possible, enable MSI-X. */
3644         if (ql2xenablemsix == 0 || (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
3645             !IS_QLA8432(ha) && !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) &&
3646             !IS_QLAFX00(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)))
3647                 goto skip_msi;
3648
3649         if (ql2xenablemsix == 2)
3650                 goto skip_msix;
3651
3652         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3653                 (ha->pdev->subsystem_device == 0x7040 ||
3654                 ha->pdev->subsystem_device == 0x7041 ||
3655                 ha->pdev->subsystem_device == 0x1705)) {
3656                 ql_log(ql_log_warn, vha, 0x0034,
3657                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3658                         ha->pdev->subsystem_vendor,
3659                         ha->pdev->subsystem_device);
3660                 goto skip_msi;
3661         }
3662
3663         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3664                 ql_log(ql_log_warn, vha, 0x0035,
3665                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3666                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3667                 goto skip_msix;
3668         }
3669
3670         ret = qla24xx_enable_msix(ha, rsp);
3671         if (!ret) {
3672                 ql_dbg(ql_dbg_init, vha, 0x0036,
3673                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3674                     ha->chip_revision, ha->fw_attributes);
3675                 goto clear_risc_ints;
3676         }
3677
3678 skip_msix:
3679
3680         ql_log(ql_log_info, vha, 0x0037,
3681             "Falling back-to MSI mode -- ret=%d.\n", ret);
3682
3683         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3684             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3685             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3686                 goto skip_msi;
3687
3688         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
3689         if (ret > 0) {
3690                 ql_dbg(ql_dbg_init, vha, 0x0038,
3691                     "MSI: Enabled.\n");
3692                 ha->flags.msi_enabled = 1;
3693         } else
3694                 ql_log(ql_log_warn, vha, 0x0039,
3695                     "Falling back-to INTa mode -- ret=%d.\n", ret);
3696 skip_msi:
3697
3698         /* Skip INTx on ISP82xx. */
3699         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3700                 return QLA_FUNCTION_FAILED;
3701
3702         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3703             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3704             QLA2XXX_DRIVER_NAME, rsp);
3705         if (ret) {
3706                 ql_log(ql_log_warn, vha, 0x003a,
3707                     "Failed to reserve interrupt %d already in use.\n",
3708                     ha->pdev->irq);
3709                 goto fail;
3710         } else if (!ha->flags.msi_enabled) {
3711                 ql_dbg(ql_dbg_init, vha, 0x0125,
3712                     "INTa mode: Enabled.\n");
3713                 ha->flags.mr_intr_valid = 1;
3714         }
3715
3716 clear_risc_ints:
3717         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3718                 goto fail;
3719
3720         spin_lock_irq(&ha->hardware_lock);
3721         WRT_REG_WORD(&reg->isp.semaphore, 0);
3722         spin_unlock_irq(&ha->hardware_lock);
3723
3724 fail:
3725         return ret;
3726 }
3727
3728 void
3729 qla2x00_free_irqs(scsi_qla_host_t *vha)
3730 {
3731         struct qla_hw_data *ha = vha->hw;
3732         struct rsp_que *rsp;
3733         struct qla_msix_entry *qentry;
3734         int i;
3735
3736         /*
3737          * We need to check that ha->rsp_q_map is valid in case we are called
3738          * from a probe failure context.
3739          */
3740         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3741                 goto free_irqs;
3742         rsp = ha->rsp_q_map[0];
3743
3744         if (ha->flags.msix_enabled) {
3745                 for (i = 0; i < ha->msix_count; i++) {
3746                         qentry = &ha->msix_entries[i];
3747                         if (qentry->have_irq) {
3748                                 irq_set_affinity_notifier(qentry->vector, NULL);
3749                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
3750                         }
3751                 }
3752                 kfree(ha->msix_entries);
3753                 ha->msix_entries = NULL;
3754                 ha->flags.msix_enabled = 0;
3755                 ql_dbg(ql_dbg_init, vha, 0x0042,
3756                         "Disabled MSI-X.\n");
3757         } else {
3758                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
3759         }
3760
3761 free_irqs:
3762         pci_free_irq_vectors(ha->pdev);
3763 }
3764
3765 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
3766         struct qla_msix_entry *msix, int vector_type)
3767 {
3768         const struct qla_init_msix_entry *intr = &msix_entries[vector_type];
3769         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3770         int ret;
3771
3772         scnprintf(msix->name, sizeof(msix->name),
3773             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
3774         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
3775         if (ret) {
3776                 ql_log(ql_log_fatal, vha, 0x00e6,
3777                     "MSI-X: Unable to register handler -- %x/%d.\n",
3778                     msix->vector, ret);
3779                 return ret;
3780         }
3781         msix->have_irq = 1;
3782         msix->handle = qpair;
3783         return ret;
3784 }