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                 ha->isp_ops->fw_dump(vha, 1);
 780                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 781                 break;
 782
 783         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 784                 ha->flags.lip_ae = 1;
 785
 786                 ql_dbg(ql_dbg_async, vha, 0x5009,
 787                     "LIP occurred (%x).\n", mb[1]);
 788
 789                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 790                         atomic_set(&vha->loop_state, LOOP_DOWN);
 791                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 792                         qla2x00_mark_all_devices_lost(vha, 1);
 793                 }
 794
 795                 if (vha->vp_idx) {
 796                         atomic_set(&vha->vp_state, VP_FAILED);
 797                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 798                 }
 799
 800                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 801                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 802
 803                 vha->flags.management_server_logged_in = 0;
 804                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 805                 break;
 806
 807         case MBA_LOOP_UP:               /* Loop Up Event */
 808                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 809                         ha->link_data_rate = PORT_SPEED_1GB;
 810                 else
 811                         ha->link_data_rate = mb[1];
 812
 813                 ql_log(ql_log_info, vha, 0x500a,
 814                     "LOOP UP detected (%s Gbps).\n",
 815                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 816
 817                 vha->flags.management_server_logged_in = 0;
 818                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 819
 820                 if (AUTO_DETECT_SFP_SUPPORT(vha)) {
 821                         set_bit(DETECT_SFP_CHANGE, &vha->dpc_flags);
 822                         qla2xxx_wake_dpc(vha);
 823                 }
 824                 break;
 825
 826         case MBA_LOOP_DOWN:             /* Loop Down Event */
 827                 SAVE_TOPO(ha);
 828                 ha->flags.lip_ae = 0;
 829                 ha->current_topology = 0;
 830
 831                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 832                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 833                 mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
 834                         : mbx;
 835                 ql_log(ql_log_info, vha, 0x500b,
 836                     "LOOP DOWN detected (%x %x %x %x).\n",
 837                     mb[1], mb[2], mb[3], mbx);
 838
 839                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 840                         atomic_set(&vha->loop_state, LOOP_DOWN);
 841                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 842                         /*
 843                          * In case of loop down, restore WWPN from
 844                          * NVRAM in case of FA-WWPN capable ISP
 845                          * Restore for Physical Port only
 846                          */
 847                         if (!vha->vp_idx) {
 848                                 if (ha->flags.fawwpn_enabled &&
 849                                     (ha->current_topology == ISP_CFG_F)) {
 850                                         void *wwpn = ha->init_cb->port_name;
 851
 852                                         memcpy(vha->port_name, wwpn, WWN_SIZE);
 853                                         fc_host_port_name(vha->host) =
 854                                             wwn_to_u64(vha->port_name);
 855                                         ql_dbg(ql_dbg_init + ql_dbg_verbose,
 856                                             vha, 0x00d8, "LOOP DOWN detected,"
 857                                             "restore WWPN %016llx\n",
 858                                             wwn_to_u64(vha->port_name));
 859                                 }
 860
 861                                 clear_bit(VP_CONFIG_OK, &vha->vp_flags);
 862                         }
 863
 864                         vha->device_flags |= DFLG_NO_CABLE;
 865                         qla2x00_mark_all_devices_lost(vha, 1);
 866                 }
 867
 868                 if (vha->vp_idx) {
 869                         atomic_set(&vha->vp_state, VP_FAILED);
 870                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 871                 }
 872
 873                 vha->flags.management_server_logged_in = 0;
 874                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 875                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 876                 break;
 877
 878         case MBA_LIP_RESET:             /* LIP reset occurred */
 879                 ql_dbg(ql_dbg_async, vha, 0x500c,
 880                     "LIP reset occurred (%x).\n", mb[1]);
 881
 882                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 883                         atomic_set(&vha->loop_state, LOOP_DOWN);
 884                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 885                         qla2x00_mark_all_devices_lost(vha, 1);
 886                 }
 887
 888                 if (vha->vp_idx) {
 889                         atomic_set(&vha->vp_state, VP_FAILED);
 890                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 891                 }
 892
 893                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 894
 895                 ha->operating_mode = LOOP;
 896                 vha->flags.management_server_logged_in = 0;
 897                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 898                 break;
 899
 900         /* case MBA_DCBX_COMPLETE: */
 901         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 902                 ha->flags.lip_ae = 0;
 903
 904                 if (IS_QLA2100(ha))
 905                         break;
 906
 907                 if (IS_CNA_CAPABLE(ha)) {
 908                         ql_dbg(ql_dbg_async, vha, 0x500d,
 909                             "DCBX Completed -- %04x %04x %04x.\n",
 910                             mb[1], mb[2], mb[3]);
 911                         if (ha->notify_dcbx_comp && !vha->vp_idx)
 912                                 complete(&ha->dcbx_comp);
 913
 914                 } else
 915                         ql_dbg(ql_dbg_async, vha, 0x500e,
 916                             "Asynchronous P2P MODE received.\n");
 917
 918                 /*
 919                  * Until there's a transition from loop down to loop up, treat
 920                  * this as loop down only.
 921                  */
 922                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 923                         atomic_set(&vha->loop_state, LOOP_DOWN);
 924                         if (!atomic_read(&vha->loop_down_timer))
 925                                 atomic_set(&vha->loop_down_timer,
 926                                     LOOP_DOWN_TIME);
 927                         if (!N2N_TOPO(ha))
 928                                 qla2x00_mark_all_devices_lost(vha, 1);
 929                 }
 930
 931                 if (vha->vp_idx) {
 932                         atomic_set(&vha->vp_state, VP_FAILED);
 933                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 934                 }
 935
 936                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 937                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 938
 939                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 940                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 941
 942                 vha->flags.management_server_logged_in = 0;
 943                 break;
 944
 945         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 946                 if (IS_QLA2100(ha))
 947                         break;
 948
 949                 ql_dbg(ql_dbg_async, vha, 0x500f,
 950                     "Configuration change detected: value=%x.\n", mb[1]);
 951
 952                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 953                         atomic_set(&vha->loop_state, LOOP_DOWN);
 954                         if (!atomic_read(&vha->loop_down_timer))
 955                                 atomic_set(&vha->loop_down_timer,
 956                                     LOOP_DOWN_TIME);
 957                         qla2x00_mark_all_devices_lost(vha, 1);
 958                 }
 959
 960                 if (vha->vp_idx) {
 961                         atomic_set(&vha->vp_state, VP_FAILED);
 962                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 963                 }
 964
 965                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 966                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 967                 break;
 968
 969         case MBA_PORT_UPDATE:           /* Port database update */
 970                 /*
 971                  * Handle only global and vn-port update events
 972                  *
 973                  * Relevant inputs:
 974                  * mb[1] = N_Port handle of changed port
 975                  * OR 0xffff for global event
 976                  * mb[2] = New login state
 977                  * 7 = Port logged out
 978                  * mb[3] = LSB is vp_idx, 0xff = all vps
 979                  *
 980                  * Skip processing if:
 981                  *       Event is global, vp_idx is NOT all vps,
 982                  *           vp_idx does not match
 983                  *       Event is not global, vp_idx does not match
 984                  */
 985                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 986                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 987                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 988                         break;
 989
 990                 if (mb[2] == 0x7) {
 991                         ql_dbg(ql_dbg_async, vha, 0x5010,
 992                             "Port %s %04x %04x %04x.\n",
 993                             mb[1] == 0xffff ? "unavailable" : "logout",
 994                             mb[1], mb[2], mb[3]);
 995
 996                         if (mb[1] == 0xffff)
 997                                 goto global_port_update;
 998
 999                         if (mb[1] == NPH_SNS_LID(ha)) {
1000                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1001                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1002                                 break;
1003                         }
1004
1005                         /* use handle_cnt for loop id/nport handle */
1006                         if (IS_FWI2_CAPABLE(ha))
1007                                 handle_cnt = NPH_SNS;
1008                         else
1009                                 handle_cnt = SIMPLE_NAME_SERVER;
1010                         if (mb[1] == handle_cnt) {
1011                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1012                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1013                                 break;
1014                         }
1015
1016                         /* Port logout */
1017                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
1018                         if (!fcport)
1019                                 break;
1020                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1021                                 break;
1022                         ql_dbg(ql_dbg_async, vha, 0x508a,
1023                             "Marking port lost loopid=%04x portid=%06x.\n",
1024                             fcport->loop_id, fcport->d_id.b24);
1025                         if (qla_ini_mode_enabled(vha)) {
1026                                 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1027                                 fcport->logout_on_delete = 0;
1028                                 qlt_schedule_sess_for_deletion(fcport);
1029                         }
1030                         break;
1031
1032 global_port_update:
1033                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1034                                 atomic_set(&vha->loop_state, LOOP_DOWN);
1035                                 atomic_set(&vha->loop_down_timer,
1036                                     LOOP_DOWN_TIME);
1037                                 vha->device_flags |= DFLG_NO_CABLE;
1038                                 qla2x00_mark_all_devices_lost(vha, 1);
1039                         }
1040
1041                         if (vha->vp_idx) {
1042                                 atomic_set(&vha->vp_state, VP_FAILED);
1043                                 fc_vport_set_state(vha->fc_vport,
1044                                     FC_VPORT_FAILED);
1045                                 qla2x00_mark_all_devices_lost(vha, 1);
1046                         }
1047
1048                         vha->flags.management_server_logged_in = 0;
1049                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1050                         break;
1051                 }
1052
1053                 /*
1054                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1055                  * event etc. earlier indicating loop is down) then process
1056                  * it.  Otherwise ignore it and Wait for RSCN to come in.
1057                  */
1058                 atomic_set(&vha->loop_down_timer, 0);
1059                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
1060                         !ha->flags.n2n_ae  &&
1061                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
1062                         ql_dbg(ql_dbg_async, vha, 0x5011,
1063                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
1064                             mb[1], mb[2], mb[3]);
1065
1066                         qlt_async_event(mb[0], vha, mb);
1067                         break;
1068                 }
1069
1070                 ql_dbg(ql_dbg_async, vha, 0x5012,
1071                     "Port database changed %04x %04x %04x.\n",
1072                     mb[1], mb[2], mb[3]);
1073
1074                 /*
1075                  * Mark all devices as missing so we will login again.
1076                  */
1077                 atomic_set(&vha->loop_state, LOOP_UP);
1078                 vha->scan.scan_retry = 0;
1079
1080                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1081                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1082                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
1083
1084                 qlt_async_event(mb[0], vha, mb);
1085                 break;
1086
1087         case MBA_RSCN_UPDATE:           /* State Change Registration */
1088                 /* Check if the Vport has issued a SCR */
1089                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1090                         break;
1091                 /* Only handle SCNs for our Vport index. */
1092                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1093                         break;
1094
1095                 ql_dbg(ql_dbg_async, vha, 0x5013,
1096                     "RSCN database changed -- %04x %04x %04x.\n",
1097                     mb[1], mb[2], mb[3]);
1098
1099                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1100                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1101                                 | vha->d_id.b.al_pa;
1102                 if (rscn_entry == host_pid) {
1103                         ql_dbg(ql_dbg_async, vha, 0x5014,
1104                             "Ignoring RSCN update to local host "
1105                             "port ID (%06x).\n", host_pid);
1106                         break;
1107                 }
1108
1109                 /* Ignore reserved bits from RSCN-payload. */
1110                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1111
1112                 /* Skip RSCNs for virtual ports on the same physical port */
1113                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1114                         break;
1115
1116                 atomic_set(&vha->loop_down_timer, 0);
1117                 vha->flags.management_server_logged_in = 0;
1118                 {
1119                         struct event_arg ea;
1120
1121                         memset(&ea, 0, sizeof(ea));
1122                         ea.event = FCME_RSCN;
1123                         ea.id.b24 = rscn_entry;
1124                         ea.id.b.rsvd_1 = rscn_entry >> 24;
1125                         qla2x00_fcport_event_handler(vha, &ea);
1126                         qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1127                 }
1128                 break;
1129         /* case MBA_RIO_RESPONSE: */
1130         case MBA_ZIO_RESPONSE:
1131                 ql_dbg(ql_dbg_async, vha, 0x5015,
1132                     "[R|Z]IO update completion.\n");
1133
1134                 if (IS_FWI2_CAPABLE(ha))
1135                         qla24xx_process_response_queue(vha, rsp);
1136                 else
1137                         qla2x00_process_response_queue(rsp);
1138                 break;
1139
1140         case MBA_DISCARD_RND_FRAME:
1141                 ql_dbg(ql_dbg_async, vha, 0x5016,
1142                     "Discard RND Frame -- %04x %04x %04x.\n",
1143                     mb[1], mb[2], mb[3]);
1144                 break;
1145
1146         case MBA_TRACE_NOTIFICATION:
1147                 ql_dbg(ql_dbg_async, vha, 0x5017,
1148                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1149                 break;
1150
1151         case MBA_ISP84XX_ALERT:
1152                 ql_dbg(ql_dbg_async, vha, 0x5018,
1153                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1154                     mb[1], mb[2], mb[3]);
1155
1156                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1157                 switch (mb[1]) {
1158                 case A84_PANIC_RECOVERY:
1159                         ql_log(ql_log_info, vha, 0x5019,
1160                             "Alert 84XX: panic recovery %04x %04x.\n",
1161                             mb[2], mb[3]);
1162                         break;
1163                 case A84_OP_LOGIN_COMPLETE:
1164                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1165                         ql_log(ql_log_info, vha, 0x501a,
1166                             "Alert 84XX: firmware version %x.\n",
1167                             ha->cs84xx->op_fw_version);
1168                         break;
1169                 case A84_DIAG_LOGIN_COMPLETE:
1170                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1171                         ql_log(ql_log_info, vha, 0x501b,
1172                             "Alert 84XX: diagnostic firmware version %x.\n",
1173                             ha->cs84xx->diag_fw_version);
1174                         break;
1175                 case A84_GOLD_LOGIN_COMPLETE:
1176                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1177                         ha->cs84xx->fw_update = 1;
1178                         ql_log(ql_log_info, vha, 0x501c,
1179                             "Alert 84XX: gold firmware version %x.\n",
1180                             ha->cs84xx->gold_fw_version);
1181                         break;
1182                 default:
1183                         ql_log(ql_log_warn, vha, 0x501d,
1184                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1185                             mb[1], mb[2], mb[3]);
1186                 }
1187                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1188                 break;
1189         case MBA_DCBX_START:
1190                 ql_dbg(ql_dbg_async, vha, 0x501e,
1191                     "DCBX Started -- %04x %04x %04x.\n",
1192                     mb[1], mb[2], mb[3]);
1193                 break;
1194         case MBA_DCBX_PARAM_UPDATE:
1195                 ql_dbg(ql_dbg_async, vha, 0x501f,
1196                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1197                     mb[1], mb[2], mb[3]);
1198                 break;
1199         case MBA_FCF_CONF_ERR:
1200                 ql_dbg(ql_dbg_async, vha, 0x5020,
1201                     "FCF Configuration Error -- %04x %04x %04x.\n",
1202                     mb[1], mb[2], mb[3]);
1203                 break;
1204         case MBA_IDC_NOTIFY:
1205                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1206                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1207                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1208                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1209                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1210                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1211                                 /*
1212                                  * Extend loop down timer since port is active.
1213                                  */
1214                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1215                                         atomic_set(&vha->loop_down_timer,
1216                                             LOOP_DOWN_TIME);
1217                                 qla2xxx_wake_dpc(vha);
1218                         }
1219                 }
1220                 /* fall through */
1221         case MBA_IDC_COMPLETE:
1222                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1223                         complete(&ha->lb_portup_comp);
1224                 /* Fallthru */
1225         case MBA_IDC_TIME_EXT:
1226                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1227                     IS_QLA8044(ha))
1228                         qla81xx_idc_event(vha, mb[0], mb[1]);
1229                 break;
1230
1231         case MBA_IDC_AEN:
1232                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1233                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1234                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1235                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1236                 qla83xx_handle_8200_aen(vha, mb);
1237                 break;
1238
1239         case MBA_DPORT_DIAGNOSTICS:
1240                 ql_dbg(ql_dbg_async, vha, 0x5052,
1241                     "D-Port Diagnostics: %04x result=%s\n",
1242                     mb[0],
1243                     mb[1] == 0 ? "start" :
1244                     mb[1] == 1 ? "done (pass)" :
1245                     mb[1] == 2 ? "done (error)" : "other");
1246                 break;
1247
1248         case MBA_TEMPERATURE_ALERT:
1249                 ql_dbg(ql_dbg_async, vha, 0x505e,
1250                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1251                 if (mb[1] == 0x12)
1252                         schedule_work(&ha->board_disable);
1253                 break;
1254
1255         case MBA_TRANS_INSERT:
1256                 ql_dbg(ql_dbg_async, vha, 0x5091,
1257                     "Transceiver Insertion: %04x\n", mb[1]);
1258                 break;
1259
1260         default:
1261                 ql_dbg(ql_dbg_async, vha, 0x5057,
1262                     "Unknown AEN:%04x %04x %04x %04x\n",
1263                     mb[0], mb[1], mb[2], mb[3]);
1264         }
1265
1266         qlt_async_event(mb[0], vha, mb);
1267
1268         if (!vha->vp_idx && ha->num_vhosts)
1269                 qla2x00_alert_all_vps(rsp, mb);
1270 }
1271
1272 /**
1273  * qla2x00_process_completed_request() - Process a Fast Post response.
1274  * @vha: SCSI driver HA context
1275  * @req: request queue
1276  * @index: SRB index
1277  */
1278 void
1279 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1280                                   struct req_que *req, uint32_t index)
1281 {
1282         srb_t *sp;
1283         struct qla_hw_data *ha = vha->hw;
1284
1285         /* Validate handle. */
1286         if (index >= req->num_outstanding_cmds) {
1287                 ql_log(ql_log_warn, vha, 0x3014,
1288                     "Invalid SCSI command index (%x).\n", index);
1289
1290                 if (IS_P3P_TYPE(ha))
1291                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1292                 else
1293                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1294                 return;
1295         }
1296
1297         sp = req->outstanding_cmds[index];
1298         if (sp) {
1299                 /* Free outstanding command slot. */
1300                 req->outstanding_cmds[index] = NULL;
1301
1302                 /* Save ISP completion status */
1303                 sp->done(sp, DID_OK << 16);
1304         } else {
1305                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1306
1307                 if (IS_P3P_TYPE(ha))
1308                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1309                 else
1310                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1311         }
1312 }
1313
1314 srb_t *
1315 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1316     struct req_que *req, void *iocb)
1317 {
1318         struct qla_hw_data *ha = vha->hw;
1319         sts_entry_t *pkt = iocb;
1320         srb_t *sp = NULL;
1321         uint16_t index;
1322
1323         index = LSW(pkt->handle);
1324         if (index >= req->num_outstanding_cmds) {
1325                 ql_log(ql_log_warn, vha, 0x5031,
1326                            "Invalid command index (%x) type %8ph.\n",
1327                            index, iocb);
1328                 if (IS_P3P_TYPE(ha))
1329                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1330                 else
1331                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1332                 goto done;
1333         }
1334         sp = req->outstanding_cmds[index];
1335         if (!sp) {
1336                 ql_log(ql_log_warn, vha, 0x5032,
1337                     "Invalid completion handle (%x) -- timed-out.\n", index);
1338                 return sp;
1339         }
1340         if (sp->handle != index) {
1341                 ql_log(ql_log_warn, vha, 0x5033,
1342                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1343                 return NULL;
1344         }
1345
1346         req->outstanding_cmds[index] = NULL;
1347
1348 done:
1349         return sp;
1350 }
1351
1352 static void
1353 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1354     struct mbx_entry *mbx)
1355 {
1356         const char func[] = "MBX-IOCB";
1357         const char *type;
1358         fc_port_t *fcport;
1359         srb_t *sp;
1360         struct srb_iocb *lio;
1361         uint16_t *data;
1362         uint16_t status;
1363
1364         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1365         if (!sp)
1366                 return;
1367
1368         lio = &sp->u.iocb_cmd;
1369         type = sp->name;
1370         fcport = sp->fcport;
1371         data = lio->u.logio.data;
1372
1373         data[0] = MBS_COMMAND_ERROR;
1374         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1375             QLA_LOGIO_LOGIN_RETRIED : 0;
1376         if (mbx->entry_status) {
1377                 ql_dbg(ql_dbg_async, vha, 0x5043,
1378                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1379                     "entry-status=%x status=%x state-flag=%x "
1380                     "status-flags=%x.\n", type, sp->handle,
1381                     fcport->d_id.b.domain, fcport->d_id.b.area,
1382                     fcport->d_id.b.al_pa, mbx->entry_status,
1383                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1384                     le16_to_cpu(mbx->status_flags));
1385
1386                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1387                     mbx, sizeof(*mbx));
1388
1389                 goto logio_done;
1390         }
1391
1392         status = le16_to_cpu(mbx->status);
1393         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1394             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1395                 status = 0;
1396         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1397                 ql_dbg(ql_dbg_async, vha, 0x5045,
1398                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1399                     type, sp->handle, fcport->d_id.b.domain,
1400                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1401                     le16_to_cpu(mbx->mb1));
1402
1403                 data[0] = MBS_COMMAND_COMPLETE;
1404                 if (sp->type == SRB_LOGIN_CMD) {
1405                         fcport->port_type = FCT_TARGET;
1406                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1407                                 fcport->port_type = FCT_INITIATOR;
1408                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1409                                 fcport->flags |= FCF_FCP2_DEVICE;
1410                 }
1411                 goto logio_done;
1412         }
1413
1414         data[0] = le16_to_cpu(mbx->mb0);
1415         switch (data[0]) {
1416         case MBS_PORT_ID_USED:
1417                 data[1] = le16_to_cpu(mbx->mb1);
1418                 break;
1419         case MBS_LOOP_ID_USED:
1420                 break;
1421         default:
1422                 data[0] = MBS_COMMAND_ERROR;
1423                 break;
1424         }
1425
1426         ql_log(ql_log_warn, vha, 0x5046,
1427             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1428             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1429             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1430             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1431             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1432             le16_to_cpu(mbx->mb7));
1433
1434 logio_done:
1435         sp->done(sp, 0);
1436 }
1437
1438 static void
1439 qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1440     struct mbx_24xx_entry *pkt)
1441 {
1442         const char func[] = "MBX-IOCB2";
1443         srb_t *sp;
1444         struct srb_iocb *si;
1445         u16 sz, i;
1446         int res;
1447
1448         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1449         if (!sp)
1450                 return;
1451
1452         si = &sp->u.iocb_cmd;
1453         sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));
1454
1455         for (i = 0; i < sz; i++)
1456                 si->u.mbx.in_mb[i] = le16_to_cpu(pkt->mb[i]);
1457
1458         res = (si->u.mbx.in_mb[0] & MBS_MASK);
1459
1460         sp->done(sp, res);
1461 }
1462
1463 static void
1464 qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1465     struct nack_to_isp *pkt)
1466 {
1467         const char func[] = "nack";
1468         srb_t *sp;
1469         int res = 0;
1470
1471         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1472         if (!sp)
1473                 return;
1474
1475         if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
1476                 res = QLA_FUNCTION_FAILED;
1477
1478         sp->done(sp, res);
1479 }
1480
1481 static void
1482 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1483     sts_entry_t *pkt, int iocb_type)
1484 {
1485         const char func[] = "CT_IOCB";
1486         const char *type;
1487         srb_t *sp;
1488         struct bsg_job *bsg_job;
1489         struct fc_bsg_reply *bsg_reply;
1490         uint16_t comp_status;
1491         int res = 0;
1492
1493         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1494         if (!sp)
1495                 return;
1496
1497         switch (sp->type) {
1498         case SRB_CT_CMD:
1499             bsg_job = sp->u.bsg_job;
1500             bsg_reply = bsg_job->reply;
1501
1502             type = "ct pass-through";
1503
1504             comp_status = le16_to_cpu(pkt->comp_status);
1505
1506             /*
1507              * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1508              * fc payload  to the caller
1509              */
1510             bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1511             bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1512
1513             if (comp_status != CS_COMPLETE) {
1514                     if (comp_status == CS_DATA_UNDERRUN) {
1515                             res = DID_OK << 16;
1516                             bsg_reply->reply_payload_rcv_len =
1517                                 le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1518
1519                             ql_log(ql_log_warn, vha, 0x5048,
1520                                 "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
1521                                 type, comp_status,
1522                                 bsg_reply->reply_payload_rcv_len);
1523                     } else {
1524                             ql_log(ql_log_warn, vha, 0x5049,
1525                                 "CT pass-through-%s error comp_status=0x%x.\n",
1526                                 type, comp_status);
1527                             res = DID_ERROR << 16;
1528                             bsg_reply->reply_payload_rcv_len = 0;
1529                     }
1530                     ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1531                         pkt, sizeof(*pkt));
1532             } else {
1533                     res = DID_OK << 16;
1534                     bsg_reply->reply_payload_rcv_len =
1535                         bsg_job->reply_payload.payload_len;
1536                     bsg_job->reply_len = 0;
1537             }
1538             break;
1539         case SRB_CT_PTHRU_CMD:
1540             /*
1541              * borrowing sts_entry_24xx.comp_status.
1542              * same location as ct_entry_24xx.comp_status
1543              */
1544              res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1545                  (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1546                  sp->name);
1547              break;
1548         }
1549
1550         sp->done(sp, res);
1551 }
1552
1553 static void
1554 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1555     struct sts_entry_24xx *pkt, int iocb_type)
1556 {
1557         const char func[] = "ELS_CT_IOCB";
1558         const char *type;
1559         srb_t *sp;
1560         struct bsg_job *bsg_job;
1561         struct fc_bsg_reply *bsg_reply;
1562         uint16_t comp_status;
1563         uint32_t fw_status[3];
1564         int res;
1565         struct srb_iocb *els;
1566
1567         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1568         if (!sp)
1569                 return;
1570
1571         type = NULL;
1572         switch (sp->type) {
1573         case SRB_ELS_CMD_RPT:
1574         case SRB_ELS_CMD_HST:
1575                 type = "els";
1576                 break;
1577         case SRB_CT_CMD:
1578                 type = "ct pass-through";
1579                 break;
1580         case SRB_ELS_DCMD:
1581                 type = "Driver ELS logo";
1582                 if (iocb_type != ELS_IOCB_TYPE) {
1583                         ql_dbg(ql_dbg_user, vha, 0x5047,
1584                             "Completing %s: (%p) type=%d.\n",
1585                             type, sp, sp->type);
1586                         sp->done(sp, 0);
1587                         return;
1588                 }
1589                 break;
1590         case SRB_CT_PTHRU_CMD:
1591                 /* borrowing sts_entry_24xx.comp_status.
1592                    same location as ct_entry_24xx.comp_status
1593                  */
1594                 res = qla2x00_chk_ms_status(sp->vha, (ms_iocb_entry_t *)pkt,
1595                         (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1596                         sp->name);
1597                 sp->done(sp, res);
1598                 return;
1599         default:
1600                 ql_dbg(ql_dbg_user, vha, 0x503e,
1601                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1602                 return;
1603         }
1604
1605         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1606         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_1);
1607         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_2);
1608
1609         if (iocb_type == ELS_IOCB_TYPE) {
1610                 els = &sp->u.iocb_cmd;
1611                 els->u.els_plogi.fw_status[0] = fw_status[0];
1612                 els->u.els_plogi.fw_status[1] = fw_status[1];
1613                 els->u.els_plogi.fw_status[2] = fw_status[2];
1614                 els->u.els_plogi.comp_status = fw_status[0];
1615                 if (comp_status == CS_COMPLETE) {
1616                         res =  DID_OK << 16;
1617                 } else {
1618                         if (comp_status == CS_DATA_UNDERRUN) {
1619                                 res =  DID_OK << 16;
1620                                 els->u.els_plogi.len =
1621                                 le16_to_cpu(((struct els_sts_entry_24xx *)
1622                                         pkt)->total_byte_count);
1623                         } else {
1624                                 els->u.els_plogi.len = 0;
1625                                 res = DID_ERROR << 16;
1626                         }
1627                 }
1628                 ql_dbg(ql_dbg_user, vha, 0x503f,
1629                     "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",
1630                     type, sp->handle, comp_status, fw_status[1], fw_status[2],
1631                     le16_to_cpu(((struct els_sts_entry_24xx *)
1632                         pkt)->total_byte_count));
1633                 goto els_ct_done;
1634         }
1635
1636         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1637          * fc payload  to the caller
1638          */
1639         bsg_job = sp->u.bsg_job;
1640         bsg_reply = bsg_job->reply;
1641         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1642         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1643
1644         if (comp_status != CS_COMPLETE) {
1645                 if (comp_status == CS_DATA_UNDERRUN) {
1646                         res = DID_OK << 16;
1647                         bsg_reply->reply_payload_rcv_len =
1648                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1649
1650                         ql_dbg(ql_dbg_user, vha, 0x503f,
1651                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1652                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1653                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1654                             le16_to_cpu(((struct els_sts_entry_24xx *)
1655                                 pkt)->total_byte_count));
1656                 } else {
1657                         ql_dbg(ql_dbg_user, vha, 0x5040,
1658                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1659                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1660                             type, sp->handle, comp_status,
1661                             le16_to_cpu(((struct els_sts_entry_24xx *)
1662                                 pkt)->error_subcode_1),
1663                             le16_to_cpu(((struct els_sts_entry_24xx *)
1664                                     pkt)->error_subcode_2));
1665                         res = DID_ERROR << 16;
1666                         bsg_reply->reply_payload_rcv_len = 0;
1667                 }
1668                 memcpy(bsg_job->reply + sizeof(struct fc_bsg_reply),
1669                        fw_status, sizeof(fw_status));
1670                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1671                     pkt, sizeof(*pkt));
1672         }
1673         else {
1674                 res =  DID_OK << 16;
1675                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1676                 bsg_job->reply_len = 0;
1677         }
1678 els_ct_done:
1679
1680         sp->done(sp, res);
1681 }
1682
1683 static void
1684 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1685     struct logio_entry_24xx *logio)
1686 {
1687         const char func[] = "LOGIO-IOCB";
1688         const char *type;
1689         fc_port_t *fcport;
1690         srb_t *sp;
1691         struct srb_iocb *lio;
1692         uint16_t *data;
1693         uint32_t iop[2];
1694
1695         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1696         if (!sp)
1697                 return;
1698
1699         lio = &sp->u.iocb_cmd;
1700         type = sp->name;
1701         fcport = sp->fcport;
1702         data = lio->u.logio.data;
1703
1704         data[0] = MBS_COMMAND_ERROR;
1705         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1706                 QLA_LOGIO_LOGIN_RETRIED : 0;
1707         if (logio->entry_status) {
1708                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1709                     "Async-%s error entry - %8phC hdl=%x"
1710                     "portid=%02x%02x%02x entry-status=%x.\n",
1711                     type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
1712                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1713                     logio->entry_status);
1714                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1715                     logio, sizeof(*logio));
1716
1717                 goto logio_done;
1718         }
1719
1720         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1721                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1722                     "Async-%s complete - %8phC hdl=%x portid=%02x%02x%02x "
1723                     "iop0=%x.\n", type, fcport->port_name, sp->handle,
1724                     fcport->d_id.b.domain,
1725                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1726                     le32_to_cpu(logio->io_parameter[0]));
1727
1728                 vha->hw->exch_starvation = 0;
1729                 data[0] = MBS_COMMAND_COMPLETE;
1730
1731                 if (sp->type == SRB_PRLI_CMD) {
1732                         lio->u.logio.iop[0] =
1733                             le32_to_cpu(logio->io_parameter[0]);
1734                         lio->u.logio.iop[1] =
1735                             le32_to_cpu(logio->io_parameter[1]);
1736                         goto logio_done;
1737                 }
1738
1739                 if (sp->type != SRB_LOGIN_CMD)
1740                         goto logio_done;
1741
1742                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1743                 if (iop[0] & BIT_4) {
1744                         fcport->port_type = FCT_TARGET;
1745                         if (iop[0] & BIT_8)
1746                                 fcport->flags |= FCF_FCP2_DEVICE;
1747                 } else if (iop[0] & BIT_5)
1748                         fcport->port_type = FCT_INITIATOR;
1749
1750                 if (iop[0] & BIT_7)
1751                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1752
1753                 if (logio->io_parameter[7] || logio->io_parameter[8])
1754                         fcport->supported_classes |= FC_COS_CLASS2;
1755                 if (logio->io_parameter[9] || logio->io_parameter[10])
1756                         fcport->supported_classes |= FC_COS_CLASS3;
1757
1758                 goto logio_done;
1759         }
1760
1761         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1762         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1763         lio->u.logio.iop[0] = iop[0];
1764         lio->u.logio.iop[1] = iop[1];
1765         switch (iop[0]) {
1766         case LSC_SCODE_PORTID_USED:
1767                 data[0] = MBS_PORT_ID_USED;
1768                 data[1] = LSW(iop[1]);
1769                 break;
1770         case LSC_SCODE_NPORT_USED:
1771                 data[0] = MBS_LOOP_ID_USED;
1772                 break;
1773         case LSC_SCODE_CMD_FAILED:
1774                 if (iop[1] == 0x0606) {
1775                         /*
1776                          * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
1777                          * Target side acked.
1778                          */
1779                         data[0] = MBS_COMMAND_COMPLETE;
1780                         goto logio_done;
1781                 }
1782                 data[0] = MBS_COMMAND_ERROR;
1783                 break;
1784         case LSC_SCODE_NOXCB:
1785                 vha->hw->exch_starvation++;
1786                 if (vha->hw->exch_starvation > 5) {
1787                         ql_log(ql_log_warn, vha, 0xd046,
1788                             "Exchange starvation. Resetting RISC\n");
1789
1790                         vha->hw->exch_starvation = 0;
1791
1792                         if (IS_P3P_TYPE(vha->hw))
1793                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1794                         else
1795                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1796                         qla2xxx_wake_dpc(vha);
1797                 }
1798                 /* fall through */
1799         default:
1800                 data[0] = MBS_COMMAND_ERROR;
1801                 break;
1802         }
1803
1804         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1805             "Async-%s failed - %8phC hdl=%x portid=%02x%02x%02x comp=%x "
1806             "iop0=%x iop1=%x.\n", type, fcport->port_name,
1807                 sp->handle, fcport->d_id.b.domain,
1808             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1809             le16_to_cpu(logio->comp_status),
1810             le32_to_cpu(logio->io_parameter[0]),
1811             le32_to_cpu(logio->io_parameter[1]));
1812
1813 logio_done:
1814         sp->done(sp, 0);
1815 }
1816
1817 static void
1818 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1819 {
1820         const char func[] = "TMF-IOCB";
1821         const char *type;
1822         fc_port_t *fcport;
1823         srb_t *sp;
1824         struct srb_iocb *iocb;
1825         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1826
1827         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1828         if (!sp)
1829                 return;
1830
1831         iocb = &sp->u.iocb_cmd;
1832         type = sp->name;
1833         fcport = sp->fcport;
1834         iocb->u.tmf.data = QLA_SUCCESS;
1835
1836         if (sts->entry_status) {
1837                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1838                     "Async-%s error - hdl=%x entry-status(%x).\n",
1839                     type, sp->handle, sts->entry_status);
1840                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1841         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1842                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1843                     "Async-%s error - hdl=%x completion status(%x).\n",
1844                     type, sp->handle, sts->comp_status);
1845                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1846         } else if ((le16_to_cpu(sts->scsi_status) &
1847             SS_RESPONSE_INFO_LEN_VALID)) {
1848                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1849                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1850                             "Async-%s error - hdl=%x not enough response(%d).\n",
1851                             type, sp->handle, sts->rsp_data_len);
1852                 } else if (sts->data[3]) {
1853                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1854                             "Async-%s error - hdl=%x response(%x).\n",
1855                             type, sp->handle, sts->data[3]);
1856                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1857                 }
1858         }
1859
1860         if (iocb->u.tmf.data != QLA_SUCCESS)
1861                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, sp->vha, 0x5055,
1862                     sts, sizeof(*sts));
1863
1864         sp->done(sp, 0);
1865 }
1866
1867 static void qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1868     void *tsk, srb_t *sp)
1869 {
1870         fc_port_t *fcport;
1871         struct srb_iocb *iocb;
1872         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1873         uint16_t        state_flags;
1874         struct nvmefc_fcp_req *fd;
1875         uint16_t        ret = QLA_SUCCESS;
1876         uint16_t        comp_status = le16_to_cpu(sts->comp_status);
1877
1878         iocb = &sp->u.iocb_cmd;
1879         fcport = sp->fcport;
1880         iocb->u.nvme.comp_status = comp_status;
1881         state_flags  = le16_to_cpu(sts->state_flags);
1882         fd = iocb->u.nvme.desc;
1883
1884         if (unlikely(iocb->u.nvme.aen_op))
1885                 atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
1886
1887         /*
1888          * State flags: Bit 6 and 0.
1889          * If 0 is set, we don't care about 6.
1890          * both cases resp was dma'd to host buffer
1891          * if both are 0, that is good path case.
1892          * if six is set and 0 is clear, we need to
1893          * copy resp data from status iocb to resp buffer.
1894          */
1895         if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
1896                 iocb->u.nvme.rsp_pyld_len = 0;
1897         } else if ((state_flags & SF_FCP_RSP_DMA)) {
1898                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1899         } else if (state_flags & SF_NVME_ERSP) {
1900                 uint32_t *inbuf, *outbuf;
1901                 uint16_t iter;
1902
1903                 inbuf = (uint32_t *)&sts->nvme_ersp_data;
1904                 outbuf = (uint32_t *)fd->rspaddr;
1905                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1906                 iter = iocb->u.nvme.rsp_pyld_len >> 2;
1907                 for (; iter; iter--)
1908                         *outbuf++ = swab32(*inbuf++);
1909         } else { /* unhandled case */
1910             ql_log(ql_log_warn, fcport->vha, 0x503a,
1911                 "NVME-%s error. Unhandled state_flags of %x\n",
1912                 sp->name, state_flags);
1913         }
1914
1915         fd->transferred_length = fd->payload_length -
1916             le32_to_cpu(sts->residual_len);
1917
1918         if (unlikely(comp_status != CS_COMPLETE))
1919                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1920                    "NVME-%s ERR Handling - hdl=%x status(%x) tr_len:%x resid=%x  ox_id=%x\n",
1921                    sp->name, sp->handle, comp_status,
1922                    fd->transferred_length, le32_to_cpu(sts->residual_len),
1923                    sts->ox_id);
1924
1925         /*
1926          * If transport error then Failure (HBA rejects request)
1927          * otherwise transport will handle.
1928          */
1929         switch (comp_status) {
1930         case CS_COMPLETE:
1931                 break;
1932
1933         case CS_RESET:
1934         case CS_PORT_UNAVAILABLE:
1935         case CS_PORT_LOGGED_OUT:
1936                 fcport->nvme_flag |= NVME_FLAG_RESETTING;
1937                 /* fall through */
1938         case CS_ABORTED:
1939         case CS_PORT_BUSY:
1940                 fd->transferred_length = 0;
1941                 iocb->u.nvme.rsp_pyld_len = 0;
1942                 ret = QLA_ABORTED;
1943                 break;
1944         case CS_DATA_UNDERRUN:
1945                 break;
1946         default:
1947                 ret = QLA_FUNCTION_FAILED;
1948                 break;
1949         }
1950         sp->done(sp, ret);
1951 }
1952
1953 static void qla_ctrlvp_completed(scsi_qla_host_t *vha, struct req_que *req,
1954     struct vp_ctrl_entry_24xx *vce)
1955 {
1956         const char func[] = "CTRLVP-IOCB";
1957         srb_t *sp;
1958         int rval = QLA_SUCCESS;
1959
1960         sp = qla2x00_get_sp_from_handle(vha, func, req, vce);
1961         if (!sp)
1962                 return;
1963
1964         if (vce->entry_status != 0) {
1965                 ql_dbg(ql_dbg_vport, vha, 0x10c4,
1966                     "%s: Failed to complete IOCB -- error status (%x)\n",
1967                     sp->name, vce->entry_status);
1968                 rval = QLA_FUNCTION_FAILED;
1969         } else if (vce->comp_status != cpu_to_le16(CS_COMPLETE)) {
1970                 ql_dbg(ql_dbg_vport, vha, 0x10c5,
1971                     "%s: Failed to complete IOCB -- completion status (%x) vpidx %x\n",
1972                     sp->name, le16_to_cpu(vce->comp_status),
1973                     le16_to_cpu(vce->vp_idx_failed));
1974                 rval = QLA_FUNCTION_FAILED;
1975         } else {
1976                 ql_dbg(ql_dbg_vport, vha, 0x10c6,
1977                     "Done %s.\n", __func__);
1978         }
1979
1980         sp->rc = rval;
1981         sp->done(sp, rval);
1982 }
1983
1984 /* Process a single response queue entry. */
1985 static void qla2x00_process_response_entry(struct scsi_qla_host *vha,
1986                                            struct rsp_que *rsp,
1987                                            sts_entry_t *pkt)
1988 {
1989         sts21_entry_t *sts21_entry;
1990         sts22_entry_t *sts22_entry;
1991         uint16_t handle_cnt;
1992         uint16_t cnt;
1993
1994         switch (pkt->entry_type) {
1995         case STATUS_TYPE:
1996                 qla2x00_status_entry(vha, rsp, pkt);
1997                 break;
1998         case STATUS_TYPE_21:
1999                 sts21_entry = (sts21_entry_t *)pkt;
2000                 handle_cnt = sts21_entry->handle_count;
2001                 for (cnt = 0; cnt < handle_cnt; cnt++)
2002                         qla2x00_process_completed_request(vha, rsp->req,
2003                                                 sts21_entry->handle[cnt]);
2004                 break;
2005         case STATUS_TYPE_22:
2006                 sts22_entry = (sts22_entry_t *)pkt;
2007                 handle_cnt = sts22_entry->handle_count;
2008                 for (cnt = 0; cnt < handle_cnt; cnt++)
2009                         qla2x00_process_completed_request(vha, rsp->req,
2010                                                 sts22_entry->handle[cnt]);
2011                 break;
2012         case STATUS_CONT_TYPE:
2013                 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2014                 break;
2015         case MBX_IOCB_TYPE:
2016                 qla2x00_mbx_iocb_entry(vha, rsp->req, (struct mbx_entry *)pkt);
2017                 break;
2018         case CT_IOCB_TYPE:
2019                 qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2020                 break;
2021         default:
2022                 /* Type Not Supported. */
2023                 ql_log(ql_log_warn, vha, 0x504a,
2024                        "Received unknown response pkt type %x entry status=%x.\n",
2025                        pkt->entry_type, pkt->entry_status);
2026                 break;
2027         }
2028 }
2029
2030 /**
2031  * qla2x00_process_response_queue() - Process response queue entries.
2032  * @rsp: response queue
2033  */
2034 void
2035 qla2x00_process_response_queue(struct rsp_que *rsp)
2036 {
2037         struct scsi_qla_host *vha;
2038         struct qla_hw_data *ha = rsp->hw;
2039         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
2040         sts_entry_t     *pkt;
2041
2042         vha = pci_get_drvdata(ha->pdev);
2043
2044         if (!vha->flags.online)
2045                 return;
2046
2047         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2048                 pkt = (sts_entry_t *)rsp->ring_ptr;
2049
2050                 rsp->ring_index++;
2051                 if (rsp->ring_index == rsp->length) {
2052                         rsp->ring_index = 0;
2053                         rsp->ring_ptr = rsp->ring;
2054                 } else {
2055                         rsp->ring_ptr++;
2056                 }
2057
2058                 if (pkt->entry_status != 0) {
2059                         qla2x00_error_entry(vha, rsp, pkt);
2060                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2061                         wmb();
2062                         continue;
2063                 }
2064
2065                 qla2x00_process_response_entry(vha, rsp, pkt);
2066                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2067                 wmb();
2068         }
2069
2070         /* Adjust ring index */
2071         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
2072 }
2073
2074 static inline void
2075 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
2076                      uint32_t sense_len, struct rsp_que *rsp, int res)
2077 {
2078         struct scsi_qla_host *vha = sp->vha;
2079         struct scsi_cmnd *cp = GET_CMD_SP(sp);
2080         uint32_t track_sense_len;
2081
2082         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
2083                 sense_len = SCSI_SENSE_BUFFERSIZE;
2084
2085         SET_CMD_SENSE_LEN(sp, sense_len);
2086         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
2087         track_sense_len = sense_len;
2088
2089         if (sense_len > par_sense_len)
2090                 sense_len = par_sense_len;
2091
2092         memcpy(cp->sense_buffer, sense_data, sense_len);
2093
2094         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
2095         track_sense_len -= sense_len;
2096         SET_CMD_SENSE_LEN(sp, track_sense_len);
2097
2098         if (track_sense_len != 0) {
2099                 rsp->status_srb = sp;
2100                 cp->result = res;
2101         }
2102
2103         if (sense_len) {
2104                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
2105                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
2106                     sp->vha->host_no, cp->device->id, cp->device->lun,
2107                     cp);
2108                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
2109                     cp->sense_buffer, sense_len);
2110         }
2111 }
2112
2113 struct scsi_dif_tuple {
2114         __be16 guard;       /* Checksum */
2115         __be16 app_tag;         /* APPL identifier */
2116         __be32 ref_tag;         /* Target LBA or indirect LBA */
2117 };
2118
2119 /*
2120  * Checks the guard or meta-data for the type of error
2121  * detected by the HBA. In case of errors, we set the
2122  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
2123  * to indicate to the kernel that the HBA detected error.
2124  */
2125 static inline int
2126 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
2127 {
2128         struct scsi_qla_host *vha = sp->vha;
2129         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2130         uint8_t         *ap = &sts24->data[12];
2131         uint8_t         *ep = &sts24->data[20];
2132         uint32_t        e_ref_tag, a_ref_tag;
2133         uint16_t        e_app_tag, a_app_tag;
2134         uint16_t        e_guard, a_guard;
2135
2136         /*
2137          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
2138          * would make guard field appear at offset 2
2139          */
2140         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
2141         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
2142         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
2143         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
2144         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
2145         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
2146
2147         ql_dbg(ql_dbg_io, vha, 0x3023,
2148             "iocb(s) %p Returned STATUS.\n", sts24);
2149
2150         ql_dbg(ql_dbg_io, vha, 0x3024,
2151             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
2152             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
2153             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
2154             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
2155             a_app_tag, e_app_tag, a_guard, e_guard);
2156
2157         /*
2158          * Ignore sector if:
2159          * For type     3: ref & app tag is all 'f's
2160          * For type 0,1,2: app tag is all 'f's
2161          */
2162         if ((a_app_tag == T10_PI_APP_ESCAPE) &&
2163             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
2164              (a_ref_tag == T10_PI_REF_ESCAPE))) {
2165                 uint32_t blocks_done, resid;
2166                 sector_t lba_s = scsi_get_lba(cmd);
2167
2168                 /* 2TB boundary case covered automatically with this */
2169                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
2170
2171                 resid = scsi_bufflen(cmd) - (blocks_done *
2172                     cmd->device->sector_size);
2173
2174                 scsi_set_resid(cmd, resid);
2175                 cmd->result = DID_OK << 16;
2176
2177                 /* Update protection tag */
2178                 if (scsi_prot_sg_count(cmd)) {
2179                         uint32_t i, j = 0, k = 0, num_ent;
2180                         struct scatterlist *sg;
2181                         struct t10_pi_tuple *spt;
2182
2183                         /* Patch the corresponding protection tags */
2184                         scsi_for_each_prot_sg(cmd, sg,
2185                             scsi_prot_sg_count(cmd), i) {
2186                                 num_ent = sg_dma_len(sg) / 8;
2187                                 if (k + num_ent < blocks_done) {
2188                                         k += num_ent;
2189                                         continue;
2190                                 }
2191                                 j = blocks_done - k - 1;
2192                                 k = blocks_done;
2193                                 break;
2194                         }
2195
2196                         if (k != blocks_done) {
2197                                 ql_log(ql_log_warn, vha, 0x302f,
2198                                     "unexpected tag values tag:lba=%x:%llx)\n",
2199                                     e_ref_tag, (unsigned long long)lba_s);
2200                                 return 1;
2201                         }
2202
2203                         spt = page_address(sg_page(sg)) + sg->offset;
2204                         spt += j;
2205
2206                         spt->app_tag = T10_PI_APP_ESCAPE;
2207                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
2208                                 spt->ref_tag = T10_PI_REF_ESCAPE;
2209                 }
2210
2211                 return 0;
2212         }
2213
2214         /* check guard */
2215         if (e_guard != a_guard) {
2216                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2217                     0x10, 0x1);
2218                 set_driver_byte(cmd, DRIVER_SENSE);
2219                 set_host_byte(cmd, DID_ABORT);
2220                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2221                 return 1;
2222         }
2223
2224         /* check ref tag */
2225         if (e_ref_tag != a_ref_tag) {
2226                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2227                     0x10, 0x3);
2228                 set_driver_byte(cmd, DRIVER_SENSE);
2229                 set_host_byte(cmd, DID_ABORT);
2230                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2231                 return 1;
2232         }
2233
2234         /* check appl tag */
2235         if (e_app_tag != a_app_tag) {
2236                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2237                     0x10, 0x2);
2238                 set_driver_byte(cmd, DRIVER_SENSE);
2239                 set_host_byte(cmd, DID_ABORT);
2240                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2241                 return 1;
2242         }
2243
2244         return 1;
2245 }
2246
2247 static void
2248 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
2249                                   struct req_que *req, uint32_t index)
2250 {
2251         struct qla_hw_data *ha = vha->hw;
2252         srb_t *sp;
2253         uint16_t        comp_status;
2254         uint16_t        scsi_status;
2255         uint16_t thread_id;
2256         uint32_t rval = EXT_STATUS_OK;
2257         struct bsg_job *bsg_job = NULL;
2258         struct fc_bsg_request *bsg_request;
2259         struct fc_bsg_reply *bsg_reply;
2260         sts_entry_t *sts;
2261         struct sts_entry_24xx *sts24;
2262
2263         sts = (sts_entry_t *) pkt;
2264         sts24 = (struct sts_entry_24xx *) pkt;
2265
2266         /* Validate handle. */
2267         if (index >= req->num_outstanding_cmds) {
2268                 ql_log(ql_log_warn, vha, 0x70af,
2269                     "Invalid SCSI completion handle 0x%x.\n", index);
2270                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2271                 return;
2272         }
2273
2274         sp = req->outstanding_cmds[index];
2275         if (!sp) {
2276                 ql_log(ql_log_warn, vha, 0x70b0,
2277                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
2278                     req->id, index);
2279
2280                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2281                 return;
2282         }
2283
2284         /* Free outstanding command slot. */
2285         req->outstanding_cmds[index] = NULL;
2286         bsg_job = sp->u.bsg_job;
2287         bsg_request = bsg_job->request;
2288         bsg_reply = bsg_job->reply;
2289
2290         if (IS_FWI2_CAPABLE(ha)) {
2291                 comp_status = le16_to_cpu(sts24->comp_status);
2292                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2293         } else {
2294                 comp_status = le16_to_cpu(sts->comp_status);
2295                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2296         }
2297
2298         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
2299         switch (comp_status) {
2300         case CS_COMPLETE:
2301                 if (scsi_status == 0) {
2302                         bsg_reply->reply_payload_rcv_len =
2303                                         bsg_job->reply_payload.payload_len;
2304                         vha->qla_stats.input_bytes +=
2305                                 bsg_reply->reply_payload_rcv_len;
2306                         vha->qla_stats.input_requests++;
2307                         rval = EXT_STATUS_OK;
2308                 }
2309                 goto done;
2310
2311         case CS_DATA_OVERRUN:
2312                 ql_dbg(ql_dbg_user, vha, 0x70b1,
2313                     "Command completed with data overrun thread_id=%d\n",
2314                     thread_id);
2315                 rval = EXT_STATUS_DATA_OVERRUN;
2316                 break;
2317
2318         case CS_DATA_UNDERRUN:
2319                 ql_dbg(ql_dbg_user, vha, 0x70b2,
2320                     "Command completed with data underrun thread_id=%d\n",
2321                     thread_id);
2322                 rval = EXT_STATUS_DATA_UNDERRUN;
2323                 break;
2324         case CS_BIDIR_RD_OVERRUN:
2325                 ql_dbg(ql_dbg_user, vha, 0x70b3,
2326                     "Command completed with read data overrun thread_id=%d\n",
2327                     thread_id);
2328                 rval = EXT_STATUS_DATA_OVERRUN;
2329                 break;
2330
2331         case CS_BIDIR_RD_WR_OVERRUN:
2332                 ql_dbg(ql_dbg_user, vha, 0x70b4,
2333                     "Command completed with read and write data overrun "
2334                     "thread_id=%d\n", thread_id);
2335                 rval = EXT_STATUS_DATA_OVERRUN;
2336                 break;
2337
2338         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
2339                 ql_dbg(ql_dbg_user, vha, 0x70b5,
2340                     "Command completed with read data over and write data "
2341                     "underrun thread_id=%d\n", thread_id);
2342                 rval = EXT_STATUS_DATA_OVERRUN;
2343                 break;
2344
2345         case CS_BIDIR_RD_UNDERRUN:
2346                 ql_dbg(ql_dbg_user, vha, 0x70b6,
2347                     "Command completed with read data underrun "
2348                     "thread_id=%d\n", thread_id);
2349                 rval = EXT_STATUS_DATA_UNDERRUN;
2350                 break;
2351
2352         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2353                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2354                     "Command completed with read data under and write data "
2355                     "overrun thread_id=%d\n", thread_id);
2356                 rval = EXT_STATUS_DATA_UNDERRUN;
2357                 break;
2358
2359         case CS_BIDIR_RD_WR_UNDERRUN:
2360                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2361                     "Command completed with read and write data underrun "
2362                     "thread_id=%d\n", thread_id);
2363                 rval = EXT_STATUS_DATA_UNDERRUN;
2364                 break;
2365
2366         case CS_BIDIR_DMA:
2367                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2368                     "Command completed with data DMA error thread_id=%d\n",
2369                     thread_id);
2370                 rval = EXT_STATUS_DMA_ERR;
2371                 break;
2372
2373         case CS_TIMEOUT:
2374                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2375                     "Command completed with timeout thread_id=%d\n",
2376                     thread_id);
2377                 rval = EXT_STATUS_TIMEOUT;
2378                 break;
2379         default:
2380                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2381                     "Command completed with completion status=0x%x "
2382                     "thread_id=%d\n", comp_status, thread_id);
2383                 rval = EXT_STATUS_ERR;
2384                 break;
2385         }
2386         bsg_reply->reply_payload_rcv_len = 0;
2387
2388 done:
2389         /* Return the vendor specific reply to API */
2390         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2391         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2392         /* Always return DID_OK, bsg will send the vendor specific response
2393          * in this case only */
2394         sp->done(sp, DID_OK << 16);
2395
2396 }
2397
2398 /**
2399  * qla2x00_status_entry() - Process a Status IOCB entry.
2400  * @vha: SCSI driver HA context
2401  * @rsp: response queue
2402  * @pkt: Entry pointer
2403  */
2404 static void
2405 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2406 {
2407         srb_t           *sp;
2408         fc_port_t       *fcport;
2409         struct scsi_cmnd *cp;
2410         sts_entry_t *sts;
2411         struct sts_entry_24xx *sts24;
2412         uint16_t        comp_status;
2413         uint16_t        scsi_status;
2414         uint16_t        ox_id;
2415         uint8_t         lscsi_status;
2416         int32_t         resid;
2417         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2418             fw_resid_len;
2419         uint8_t         *rsp_info, *sense_data;
2420         struct qla_hw_data *ha = vha->hw;
2421         uint32_t handle;
2422         uint16_t que;
2423         struct req_que *req;
2424         int logit = 1;
2425         int res = 0;
2426         uint16_t state_flags = 0;
2427         uint16_t retry_delay = 0;
2428
2429         sts = (sts_entry_t *) pkt;
2430         sts24 = (struct sts_entry_24xx *) pkt;
2431         if (IS_FWI2_CAPABLE(ha)) {
2432                 comp_status = le16_to_cpu(sts24->comp_status);
2433                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2434                 state_flags = le16_to_cpu(sts24->state_flags);
2435         } else {
2436                 comp_status = le16_to_cpu(sts->comp_status);
2437                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2438         }
2439         handle = (uint32_t) LSW(sts->handle);
2440         que = MSW(sts->handle);
2441         req = ha->req_q_map[que];
2442
2443         /* Check for invalid queue pointer */
2444         if (req == NULL ||
2445             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2446                 ql_dbg(ql_dbg_io, vha, 0x3059,
2447                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2448                     "que=%u.\n", sts->handle, req, que);
2449                 return;
2450         }
2451
2452         /* Validate handle. */
2453         if (handle < req->num_outstanding_cmds) {
2454                 sp = req->outstanding_cmds[handle];
2455                 if (!sp) {
2456                         ql_dbg(ql_dbg_io, vha, 0x3075,
2457                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2458                             __func__, vha->host_no, sts->handle);
2459                         return;
2460                 }
2461         } else {
2462                 ql_dbg(ql_dbg_io, vha, 0x3017,
2463                     "Invalid status handle, out of range (0x%x).\n",
2464                     sts->handle);
2465
2466                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2467                         if (IS_P3P_TYPE(ha))
2468                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2469                         else
2470                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2471                         qla2xxx_wake_dpc(vha);
2472                 }
2473                 return;
2474         }
2475
2476         if (sp->cmd_type != TYPE_SRB) {
2477                 req->outstanding_cmds[handle] = NULL;
2478                 ql_dbg(ql_dbg_io, vha, 0x3015,
2479                     "Unknown sp->cmd_type %x %p).\n",
2480                     sp->cmd_type, sp);
2481                 return;
2482         }
2483
2484         /* NVME completion. */
2485         if (sp->type == SRB_NVME_CMD) {
2486                 req->outstanding_cmds[handle] = NULL;
2487                 qla24xx_nvme_iocb_entry(vha, req, pkt, sp);
2488                 return;
2489         }
2490
2491         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2492                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2493                 return;
2494         }
2495
2496         /* Task Management completion. */
2497         if (sp->type == SRB_TM_CMD) {
2498                 qla24xx_tm_iocb_entry(vha, req, pkt);
2499                 return;
2500         }
2501
2502         /* Fast path completion. */
2503         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2504                 qla2x00_process_completed_request(vha, req, handle);
2505
2506                 return;
2507         }
2508
2509         req->outstanding_cmds[handle] = NULL;
2510         cp = GET_CMD_SP(sp);
2511         if (cp == NULL) {
2512                 ql_dbg(ql_dbg_io, vha, 0x3018,
2513                     "Command already returned (0x%x/%p).\n",
2514                     sts->handle, sp);
2515
2516                 return;
2517         }
2518
2519         lscsi_status = scsi_status & STATUS_MASK;
2520
2521         fcport = sp->fcport;
2522
2523         ox_id = 0;
2524         sense_len = par_sense_len = rsp_info_len = resid_len =
2525             fw_resid_len = 0;
2526         if (IS_FWI2_CAPABLE(ha)) {
2527                 if (scsi_status & SS_SENSE_LEN_VALID)
2528                         sense_len = le32_to_cpu(sts24->sense_len);
2529                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2530                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2531                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2532                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2533                 if (comp_status == CS_DATA_UNDERRUN)
2534                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2535                 rsp_info = sts24->data;
2536                 sense_data = sts24->data;
2537                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2538                 ox_id = le16_to_cpu(sts24->ox_id);
2539                 par_sense_len = sizeof(sts24->data);
2540                 /* Valid values of the retry delay timer are 0x1-0xffef */
2541                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1) {
2542                         retry_delay = sts24->retry_delay & 0x3fff;
2543                         ql_dbg(ql_dbg_io, sp->vha, 0x3033,
2544                             "%s: scope=%#x retry_delay=%#x\n", __func__,
2545                             sts24->retry_delay >> 14, retry_delay);
2546                 }
2547         } else {
2548                 if (scsi_status & SS_SENSE_LEN_VALID)
2549                         sense_len = le16_to_cpu(sts->req_sense_length);
2550                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2551                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2552                 resid_len = le32_to_cpu(sts->residual_length);
2553                 rsp_info = sts->rsp_info;
2554                 sense_data = sts->req_sense_data;
2555                 par_sense_len = sizeof(sts->req_sense_data);
2556         }
2557
2558         /* Check for any FCP transport errors. */
2559         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2560                 /* Sense data lies beyond any FCP RESPONSE data. */
2561                 if (IS_FWI2_CAPABLE(ha)) {
2562                         sense_data += rsp_info_len;
2563                         par_sense_len -= rsp_info_len;
2564                 }
2565                 if (rsp_info_len > 3 && rsp_info[3]) {
2566                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2567                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2568                             rsp_info_len, rsp_info[3]);
2569
2570                         res = DID_BUS_BUSY << 16;
2571                         goto out;
2572                 }
2573         }
2574
2575         /* Check for overrun. */
2576         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2577             scsi_status & SS_RESIDUAL_OVER)
2578                 comp_status = CS_DATA_OVERRUN;
2579
2580         /*
2581          * Check retry_delay_timer value if we receive a busy or
2582          * queue full.
2583          */
2584         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2585             lscsi_status == SAM_STAT_BUSY)
2586                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2587
2588         /*
2589          * Based on Host and scsi status generate status code for Linux
2590          */
2591         switch (comp_status) {
2592         case CS_COMPLETE:
2593         case CS_QUEUE_FULL:
2594                 if (scsi_status == 0) {
2595                         res = DID_OK << 16;
2596                         break;
2597                 }
2598                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2599                         resid = resid_len;
2600                         scsi_set_resid(cp, resid);
2601
2602                         if (!lscsi_status &&
2603                             ((unsigned)(scsi_bufflen(cp) - resid) <
2604                              cp->underflow)) {
2605                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2606                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2607                                     resid, scsi_bufflen(cp));
2608
2609                                 res = DID_ERROR << 16;
2610                                 break;
2611                         }
2612                 }
2613                 res = DID_OK << 16 | lscsi_status;
2614
2615                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2616                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2617                             "QUEUE FULL detected.\n");
2618                         break;
2619                 }
2620                 logit = 0;
2621                 if (lscsi_status != SS_CHECK_CONDITION)
2622                         break;
2623
2624                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2625                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2626                         break;
2627
2628                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2629                     rsp, res);
2630                 break;
2631
2632         case CS_DATA_UNDERRUN:
2633                 /* Use F/W calculated residual length. */
2634                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2635                 scsi_set_resid(cp, resid);
2636                 if (scsi_status & SS_RESIDUAL_UNDER) {
2637                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2638                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2639                                     "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2640                                     resid, scsi_bufflen(cp));
2641
2642                                 res = DID_ERROR << 16 | lscsi_status;
2643                                 goto check_scsi_status;
2644                         }
2645
2646                         if (!lscsi_status &&
2647                             ((unsigned)(scsi_bufflen(cp) - resid) <
2648                             cp->underflow)) {
2649                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2650                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2651                                     resid, scsi_bufflen(cp));
2652
2653                                 res = DID_ERROR << 16;
2654                                 break;
2655                         }
2656                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2657                             lscsi_status != SAM_STAT_BUSY) {
2658                         /*
2659                          * scsi status of task set and busy are considered to be
2660                          * task not completed.
2661                          */
2662
2663                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2664                             "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2665                             resid, scsi_bufflen(cp));
2666
2667                         res = DID_ERROR << 16 | lscsi_status;
2668                         goto check_scsi_status;
2669                 } else {
2670                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2671                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2672                             scsi_status, lscsi_status);
2673                 }
2674
2675                 res = DID_OK << 16 | lscsi_status;
2676                 logit = 0;
2677
2678 check_scsi_status:
2679                 /*
2680                  * Check to see if SCSI Status is non zero. If so report SCSI
2681                  * Status.
2682                  */
2683                 if (lscsi_status != 0) {
2684                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2685                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2686                                     "QUEUE FULL detected.\n");
2687                                 logit = 1;
2688                                 break;
2689                         }
2690                         if (lscsi_status != SS_CHECK_CONDITION)
2691                                 break;
2692
2693                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2694                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2695                                 break;
2696
2697                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2698                             sense_len, rsp, res);
2699                 }
2700                 break;
2701
2702         case CS_PORT_LOGGED_OUT:
2703         case CS_PORT_CONFIG_CHG:
2704         case CS_PORT_BUSY:
2705         case CS_INCOMPLETE:
2706         case CS_PORT_UNAVAILABLE:
2707         case CS_TIMEOUT:
2708         case CS_RESET:
2709
2710                 /*
2711                  * We are going to have the fc class block the rport
2712                  * while we try to recover so instruct the mid layer
2713                  * to requeue until the class decides how to handle this.
2714                  */
2715                 res = DID_TRANSPORT_DISRUPTED << 16;
2716
2717                 if (comp_status == CS_TIMEOUT) {
2718                         if (IS_FWI2_CAPABLE(ha))
2719                                 break;
2720                         else if ((le16_to_cpu(sts->status_flags) &
2721                             SF_LOGOUT_SENT) == 0)
2722                                 break;
2723                 }
2724
2725                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
2726                         ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
2727                                 "Port to be marked lost on fcport=%02x%02x%02x, current "
2728                                 "port state= %s comp_status %x.\n", fcport->d_id.b.domain,
2729                                 fcport->d_id.b.area, fcport->d_id.b.al_pa,
2730                                 port_state_str[atomic_read(&fcport->state)],
2731                                 comp_status);
2732
2733                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2734                         qlt_schedule_sess_for_deletion(fcport);
2735                 }
2736
2737                 break;
2738
2739         case CS_ABORTED:
2740                 res = DID_RESET << 16;
2741                 break;
2742
2743         case CS_DIF_ERROR:
2744                 logit = qla2x00_handle_dif_error(sp, sts24);
2745                 res = cp->result;
2746                 break;
2747
2748         case CS_TRANSPORT:
2749                 res = DID_ERROR << 16;
2750
2751                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2752                         break;
2753
2754                 if (state_flags & BIT_4)
2755                         scmd_printk(KERN_WARNING, cp,
2756                             "Unsupported device '%s' found.\n",
2757                             cp->device->vendor);
2758                 break;
2759
2760         case CS_DMA:
2761                 ql_log(ql_log_info, fcport->vha, 0x3022,
2762                     "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",
2763                     comp_status, scsi_status, res, vha->host_no,
2764                     cp->device->id, cp->device->lun, fcport->d_id.b24,
2765                     ox_id, cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2766                     resid_len, fw_resid_len, sp, cp);
2767                 ql_dump_buffer(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe0ee,
2768                     pkt, sizeof(*sts24));
2769                 res = DID_ERROR << 16;
2770                 break;
2771         default:
2772                 res = DID_ERROR << 16;
2773                 break;
2774         }
2775
2776 out:
2777         if (logit)
2778                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2779                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2780                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2781                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2782                     comp_status, scsi_status, res, vha->host_no,
2783                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2784                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2785                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2786                     resid_len, fw_resid_len, sp, cp);
2787
2788         if (rsp->status_srb == NULL)
2789                 sp->done(sp, res);
2790 }
2791
2792 /**
2793  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2794  * @rsp: response queue
2795  * @pkt: Entry pointer
2796  *
2797  * Extended sense data.
2798  */
2799 static void
2800 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2801 {
2802         uint8_t sense_sz = 0;
2803         struct qla_hw_data *ha = rsp->hw;
2804         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2805         srb_t *sp = rsp->status_srb;
2806         struct scsi_cmnd *cp;
2807         uint32_t sense_len;
2808         uint8_t *sense_ptr;
2809
2810         if (!sp || !GET_CMD_SENSE_LEN(sp))
2811                 return;
2812
2813         sense_len = GET_CMD_SENSE_LEN(sp);
2814         sense_ptr = GET_CMD_SENSE_PTR(sp);
2815
2816         cp = GET_CMD_SP(sp);
2817         if (cp == NULL) {
2818                 ql_log(ql_log_warn, vha, 0x3025,
2819                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2820
2821                 rsp->status_srb = NULL;
2822                 return;
2823         }
2824
2825         if (sense_len > sizeof(pkt->data))
2826                 sense_sz = sizeof(pkt->data);
2827         else
2828                 sense_sz = sense_len;
2829
2830         /* Move sense data. */
2831         if (IS_FWI2_CAPABLE(ha))
2832                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2833         memcpy(sense_ptr, pkt->data, sense_sz);
2834         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2835                 sense_ptr, sense_sz);
2836
2837         sense_len -= sense_sz;
2838         sense_ptr += sense_sz;
2839
2840         SET_CMD_SENSE_PTR(sp, sense_ptr);
2841         SET_CMD_SENSE_LEN(sp, sense_len);
2842
2843         /* Place command on done queue. */
2844         if (sense_len == 0) {
2845                 rsp->status_srb = NULL;
2846                 sp->done(sp, cp->result);
2847         }
2848 }
2849
2850 /**
2851  * qla2x00_error_entry() - Process an error entry.
2852  * @vha: SCSI driver HA context
2853  * @rsp: response queue
2854  * @pkt: Entry pointer
2855  * return : 1=allow further error analysis. 0=no additional error analysis.
2856  */
2857 static int
2858 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2859 {
2860         srb_t *sp;
2861         struct qla_hw_data *ha = vha->hw;
2862         const char func[] = "ERROR-IOCB";
2863         uint16_t que = MSW(pkt->handle);
2864         struct req_que *req = NULL;
2865         int res = DID_ERROR << 16;
2866
2867         ql_dbg(ql_dbg_async, vha, 0x502a,
2868             "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
2869             pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
2870
2871         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2872                 goto fatal;
2873
2874         req = ha->req_q_map[que];
2875
2876         if (pkt->entry_status & RF_BUSY)
2877                 res = DID_BUS_BUSY << 16;
2878
2879         if ((pkt->handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE)
2880                 return 0;
2881
2882         switch (pkt->entry_type) {
2883         case NOTIFY_ACK_TYPE:
2884         case STATUS_TYPE:
2885         case STATUS_CONT_TYPE:
2886         case LOGINOUT_PORT_IOCB_TYPE:
2887         case CT_IOCB_TYPE:
2888         case ELS_IOCB_TYPE:
2889         case ABORT_IOCB_TYPE:
2890         case MBX_IOCB_TYPE:
2891         default:
2892                 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2893                 if (sp) {
2894                         sp->done(sp, res);
2895                         return 0;
2896                 }
2897                 break;
2898
2899         case ABTS_RESP_24XX:
2900         case CTIO_TYPE7:
2901         case CTIO_CRC2:
2902                 return 1;
2903         }
2904 fatal:
2905         ql_log(ql_log_warn, vha, 0x5030,
2906             "Error entry - invalid handle/queue (%04x).\n", que);
2907         return 0;
2908 }
2909
2910 /**
2911  * qla24xx_mbx_completion() - Process mailbox command completions.
2912  * @vha: SCSI driver HA context
2913  * @mb0: Mailbox0 register
2914  */
2915 static void
2916 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2917 {
2918         uint16_t        cnt;
2919         uint32_t        mboxes;
2920         uint16_t __iomem *wptr;
2921         struct qla_hw_data *ha = vha->hw;
2922         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2923
2924         /* Read all mbox registers? */
2925         WARN_ON_ONCE(ha->mbx_count > 32);
2926         mboxes = (1ULL << ha->mbx_count) - 1;
2927         if (!ha->mcp)
2928                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2929         else
2930                 mboxes = ha->mcp->in_mb;
2931
2932         /* Load return mailbox registers. */
2933         ha->flags.mbox_int = 1;
2934         ha->mailbox_out[0] = mb0;
2935         mboxes >>= 1;
2936         wptr = (uint16_t __iomem *)&reg->mailbox1;
2937
2938         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2939                 if (mboxes & BIT_0)
2940                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2941
2942                 mboxes >>= 1;
2943                 wptr++;
2944         }
2945 }
2946
2947 static void
2948 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2949         struct abort_entry_24xx *pkt)
2950 {
2951         const char func[] = "ABT_IOCB";
2952         srb_t *sp;
2953         struct srb_iocb *abt;
2954
2955         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2956         if (!sp)
2957                 return;
2958
2959         abt = &sp->u.iocb_cmd;
2960         abt->u.abt.comp_status = le16_to_cpu(pkt->nport_handle);
2961         sp->done(sp, 0);
2962 }
2963
2964 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
2965     struct pt_ls4_request *pkt, struct req_que *req)
2966 {
2967         srb_t *sp;
2968         const char func[] = "LS4_IOCB";
2969         uint16_t comp_status;
2970
2971         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2972         if (!sp)
2973                 return;
2974
2975         comp_status = le16_to_cpu(pkt->status);
2976         sp->done(sp, comp_status);
2977 }
2978
2979 /**
2980  * qla24xx_process_response_queue() - Process response queue entries.
2981  * @vha: SCSI driver HA context
2982  * @rsp: response queue
2983  */
2984 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2985         struct rsp_que *rsp)
2986 {
2987         struct sts_entry_24xx *pkt;
2988         struct qla_hw_data *ha = vha->hw;
2989
2990         if (!ha->flags.fw_started)
2991                 return;
2992
2993         if (rsp->qpair->cpuid != smp_processor_id())
2994                 qla_cpu_update(rsp->qpair, smp_processor_id());
2995
2996         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2997                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
2998
2999                 rsp->ring_index++;
3000                 if (rsp->ring_index == rsp->length) {
3001                         rsp->ring_index = 0;
3002                         rsp->ring_ptr = rsp->ring;
3003                 } else {
3004                         rsp->ring_ptr++;
3005                 }
3006
3007                 if (pkt->entry_status != 0) {
3008                         if (qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt))
3009                                 goto process_err;
3010
3011                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3012                         wmb();
3013                         continue;
3014                 }
3015 process_err:
3016
3017                 switch (pkt->entry_type) {
3018                 case STATUS_TYPE:
3019                         qla2x00_status_entry(vha, rsp, pkt);
3020                         break;
3021                 case STATUS_CONT_TYPE:
3022                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
3023                         break;
3024                 case VP_RPT_ID_IOCB_TYPE:
3025                         qla24xx_report_id_acquisition(vha,
3026                             (struct vp_rpt_id_entry_24xx *)pkt);
3027                         break;
3028                 case LOGINOUT_PORT_IOCB_TYPE:
3029                         qla24xx_logio_entry(vha, rsp->req,
3030                             (struct logio_entry_24xx *)pkt);
3031                         break;
3032                 case CT_IOCB_TYPE:
3033                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
3034                         break;
3035                 case ELS_IOCB_TYPE:
3036                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
3037                         break;
3038                 case ABTS_RECV_24XX:
3039                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
3040                             IS_QLA28XX(ha)) {
3041                                 /* ensure that the ATIO queue is empty */
3042                                 qlt_handle_abts_recv(vha, rsp,
3043                                     (response_t *)pkt);
3044                                 break;
3045                         } else {
3046                                 qlt_24xx_process_atio_queue(vha, 1);
3047                         }
3048                         /* fall through */
3049                 case ABTS_RESP_24XX:
3050                 case CTIO_TYPE7:
3051                 case CTIO_CRC2:
3052                         qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
3053                         break;
3054                 case PT_LS4_REQUEST:
3055                         qla24xx_nvme_ls4_iocb(vha, (struct pt_ls4_request *)pkt,
3056                             rsp->req);
3057                         break;
3058                 case NOTIFY_ACK_TYPE:
3059                         if (pkt->handle == QLA_TGT_SKIP_HANDLE)
3060                                 qlt_response_pkt_all_vps(vha, rsp,
3061                                     (response_t *)pkt);
3062                         else
3063                                 qla24xxx_nack_iocb_entry(vha, rsp->req,
3064                                         (struct nack_to_isp *)pkt);
3065                         break;
3066                 case MARKER_TYPE:
3067                         /* Do nothing in this case, this check is to prevent it
3068                          * from falling into default case
3069                          */
3070                         break;
3071                 case ABORT_IOCB_TYPE:
3072                         qla24xx_abort_iocb_entry(vha, rsp->req,
3073                             (struct abort_entry_24xx *)pkt);
3074                         break;
3075                 case MBX_IOCB_TYPE:
3076                         qla24xx_mbx_iocb_entry(vha, rsp->req,
3077                             (struct mbx_24xx_entry *)pkt);
3078                         break;
3079                 case VP_CTRL_IOCB_TYPE:
3080                         qla_ctrlvp_completed(vha, rsp->req,
3081                             (struct vp_ctrl_entry_24xx *)pkt);
3082                         break;
3083                 default:
3084                         /* Type Not Supported. */
3085                         ql_dbg(ql_dbg_async, vha, 0x5042,
3086                             "Received unknown response pkt type %x "
3087                             "entry status=%x.\n",
3088                             pkt->entry_type, pkt->entry_status);
3089                         break;
3090                 }
3091                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3092                 wmb();
3093         }
3094
3095         /* Adjust ring index */
3096         if (IS_P3P_TYPE(ha)) {
3097                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
3098
3099                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
3100         } else {
3101                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
3102         }
3103 }
3104
3105 static void
3106 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
3107 {
3108         int rval;
3109         uint32_t cnt;
3110         struct qla_hw_data *ha = vha->hw;
3111         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3112
3113         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
3114             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3115                 return;
3116
3117         rval = QLA_SUCCESS;
3118         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
3119         RD_REG_DWORD(&reg->iobase_addr);
3120         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3121         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3122             rval == QLA_SUCCESS; cnt--) {
3123                 if (cnt) {
3124                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3125                         udelay(10);
3126                 } else
3127                         rval = QLA_FUNCTION_TIMEOUT;
3128         }
3129         if (rval == QLA_SUCCESS)
3130                 goto next_test;
3131
3132         rval = QLA_SUCCESS;
3133         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3134         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3135             rval == QLA_SUCCESS; cnt--) {
3136                 if (cnt) {
3137                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3138                         udelay(10);
3139                 } else
3140                         rval = QLA_FUNCTION_TIMEOUT;
3141         }
3142         if (rval != QLA_SUCCESS)
3143                 goto done;
3144
3145 next_test:
3146         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
3147                 ql_log(ql_log_info, vha, 0x504c,
3148                     "Additional code -- 0x55AA.\n");
3149
3150 done:
3151         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
3152         RD_REG_DWORD(&reg->iobase_window);
3153 }
3154
3155 /**
3156  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
3157  * @irq: interrupt number
3158  * @dev_id: SCSI driver HA context
3159  *
3160  * Called by system whenever the host adapter generates an interrupt.
3161  *
3162  * Returns handled flag.
3163  */
3164 irqreturn_t
3165 qla24xx_intr_handler(int irq, void *dev_id)
3166 {
3167         scsi_qla_host_t *vha;
3168         struct qla_hw_data *ha;
3169         struct device_reg_24xx __iomem *reg;
3170         int             status;
3171         unsigned long   iter;
3172         uint32_t        stat;
3173         uint32_t        hccr;
3174         uint16_t        mb[8];
3175         struct rsp_que *rsp;
3176         unsigned long   flags;
3177         bool process_atio = false;
3178
3179         rsp = (struct rsp_que *) dev_id;
3180         if (!rsp) {
3181                 ql_log(ql_log_info, NULL, 0x5059,
3182                     "%s: NULL response queue pointer.\n", __func__);
3183                 return IRQ_NONE;
3184         }
3185
3186         ha = rsp->hw;
3187         reg = &ha->iobase->isp24;
3188         status = 0;
3189
3190         if (unlikely(pci_channel_offline(ha->pdev)))
3191                 return IRQ_HANDLED;
3192
3193         spin_lock_irqsave(&ha->hardware_lock, flags);
3194         vha = pci_get_drvdata(ha->pdev);
3195         for (iter = 50; iter--; ) {
3196                 stat = RD_REG_DWORD(&reg->host_status);
3197                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3198                         break;
3199                 if (stat & HSRX_RISC_PAUSED) {
3200                         if (unlikely(pci_channel_offline(ha->pdev)))
3201                                 break;
3202
3203                         hccr = RD_REG_DWORD(&reg->hccr);
3204
3205                         ql_log(ql_log_warn, vha, 0x504b,
3206                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3207                             hccr);
3208
3209                         qla2xxx_check_risc_status(vha);
3210
3211                         ha->isp_ops->fw_dump(vha, 1);
3212                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3213                         break;
3214                 } else if ((stat & HSRX_RISC_INT) == 0)
3215                         break;
3216
3217                 switch (stat & 0xff) {
3218                 case INTR_ROM_MB_SUCCESS:
3219                 case INTR_ROM_MB_FAILED:
3220                 case INTR_MB_SUCCESS:
3221                 case INTR_MB_FAILED:
3222                         qla24xx_mbx_completion(vha, MSW(stat));
3223                         status |= MBX_INTERRUPT;
3224
3225                         break;
3226                 case INTR_ASYNC_EVENT:
3227                         mb[0] = MSW(stat);
3228                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3229                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3230                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3231                         qla2x00_async_event(vha, rsp, mb);
3232                         break;
3233                 case INTR_RSP_QUE_UPDATE:
3234                 case INTR_RSP_QUE_UPDATE_83XX:
3235                         qla24xx_process_response_queue(vha, rsp);
3236                         break;
3237                 case INTR_ATIO_QUE_UPDATE_27XX:
3238                 case INTR_ATIO_QUE_UPDATE:
3239                         process_atio = true;
3240                         break;
3241                 case INTR_ATIO_RSP_QUE_UPDATE:
3242                         process_atio = true;
3243                         qla24xx_process_response_queue(vha, rsp);
3244                         break;
3245                 default:
3246                         ql_dbg(ql_dbg_async, vha, 0x504f,
3247                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
3248                         break;
3249                 }
3250                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3251                 RD_REG_DWORD_RELAXED(&reg->hccr);
3252                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
3253                         ndelay(3500);
3254         }
3255         qla2x00_handle_mbx_completion(ha, status);
3256         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3257
3258         if (process_atio) {
3259                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3260                 qlt_24xx_process_atio_queue(vha, 0);
3261                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3262         }
3263
3264         return IRQ_HANDLED;
3265 }
3266
3267 static irqreturn_t
3268 qla24xx_msix_rsp_q(int irq, void *dev_id)
3269 {
3270         struct qla_hw_data *ha;
3271         struct rsp_que *rsp;
3272         struct device_reg_24xx __iomem *reg;
3273         struct scsi_qla_host *vha;
3274         unsigned long flags;
3275
3276         rsp = (struct rsp_que *) dev_id;
3277         if (!rsp) {
3278                 ql_log(ql_log_info, NULL, 0x505a,
3279                     "%s: NULL response queue pointer.\n", __func__);
3280                 return IRQ_NONE;
3281         }
3282         ha = rsp->hw;
3283         reg = &ha->iobase->isp24;
3284
3285         spin_lock_irqsave(&ha->hardware_lock, flags);
3286
3287         vha = pci_get_drvdata(ha->pdev);
3288         qla24xx_process_response_queue(vha, rsp);
3289         if (!ha->flags.disable_msix_handshake) {
3290                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3291                 RD_REG_DWORD_RELAXED(&reg->hccr);
3292         }
3293         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3294
3295         return IRQ_HANDLED;
3296 }
3297
3298 static irqreturn_t
3299 qla24xx_msix_default(int irq, void *dev_id)
3300 {
3301         scsi_qla_host_t *vha;
3302         struct qla_hw_data *ha;
3303         struct rsp_que *rsp;
3304         struct device_reg_24xx __iomem *reg;
3305         int             status;
3306         uint32_t        stat;
3307         uint32_t        hccr;
3308         uint16_t        mb[8];
3309         unsigned long flags;
3310         bool process_atio = false;
3311
3312         rsp = (struct rsp_que *) dev_id;
3313         if (!rsp) {
3314                 ql_log(ql_log_info, NULL, 0x505c,
3315                     "%s: NULL response queue pointer.\n", __func__);
3316                 return IRQ_NONE;
3317         }
3318         ha = rsp->hw;
3319         reg = &ha->iobase->isp24;
3320         status = 0;
3321
3322         spin_lock_irqsave(&ha->hardware_lock, flags);
3323         vha = pci_get_drvdata(ha->pdev);
3324         do {
3325                 stat = RD_REG_DWORD(&reg->host_status);
3326                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3327                         break;
3328                 if (stat & HSRX_RISC_PAUSED) {
3329                         if (unlikely(pci_channel_offline(ha->pdev)))
3330                                 break;
3331
3332                         hccr = RD_REG_DWORD(&reg->hccr);
3333
3334                         ql_log(ql_log_info, vha, 0x5050,
3335                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3336                             hccr);
3337
3338                         qla2xxx_check_risc_status(vha);
3339
3340                         ha->isp_ops->fw_dump(vha, 1);
3341                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3342                         break;
3343                 } else if ((stat & HSRX_RISC_INT) == 0)
3344                         break;
3345
3346                 switch (stat & 0xff) {
3347                 case INTR_ROM_MB_SUCCESS:
3348                 case INTR_ROM_MB_FAILED:
3349                 case INTR_MB_SUCCESS:
3350                 case INTR_MB_FAILED:
3351                         qla24xx_mbx_completion(vha, MSW(stat));
3352                         status |= MBX_INTERRUPT;
3353
3354                         break;
3355                 case INTR_ASYNC_EVENT:
3356                         mb[0] = MSW(stat);
3357                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3358                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3359                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3360                         qla2x00_async_event(vha, rsp, mb);
3361                         break;
3362                 case INTR_RSP_QUE_UPDATE:
3363                 case INTR_RSP_QUE_UPDATE_83XX:
3364                         qla24xx_process_response_queue(vha, rsp);
3365                         break;
3366                 case INTR_ATIO_QUE_UPDATE_27XX:
3367                 case INTR_ATIO_QUE_UPDATE:
3368                         process_atio = true;
3369                         break;
3370                 case INTR_ATIO_RSP_QUE_UPDATE:
3371                         process_atio = true;
3372                         qla24xx_process_response_queue(vha, rsp);
3373                         break;
3374                 default:
3375                         ql_dbg(ql_dbg_async, vha, 0x5051,
3376                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
3377                         break;
3378                 }
3379                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3380         } while (0);
3381         qla2x00_handle_mbx_completion(ha, status);
3382         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3383
3384         if (process_atio) {
3385                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3386                 qlt_24xx_process_atio_queue(vha, 0);
3387                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3388         }
3389
3390         return IRQ_HANDLED;
3391 }
3392
3393 irqreturn_t
3394 qla2xxx_msix_rsp_q(int irq, void *dev_id)
3395 {
3396         struct qla_hw_data *ha;
3397         struct qla_qpair *qpair;
3398         struct device_reg_24xx __iomem *reg;
3399         unsigned long flags;
3400
3401         qpair = dev_id;
3402         if (!qpair) {
3403                 ql_log(ql_log_info, NULL, 0x505b,
3404                     "%s: NULL response queue pointer.\n", __func__);
3405                 return IRQ_NONE;
3406         }
3407         ha = qpair->hw;
3408
3409         /* Clear the interrupt, if enabled, for this response queue */
3410         if (unlikely(!ha->flags.disable_msix_handshake)) {
3411                 reg = &ha->iobase->isp24;
3412                 spin_lock_irqsave(&ha->hardware_lock, flags);
3413                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3414                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3415         }
3416
3417         queue_work(ha->wq, &qpair->q_work);
3418
3419         return IRQ_HANDLED;
3420 }
3421
3422 /* Interrupt handling helpers. */
3423
3424 struct qla_init_msix_entry {
3425         const char *name;
3426         irq_handler_t handler;
3427 };
3428
3429 static const struct qla_init_msix_entry msix_entries[] = {
3430         { "default", qla24xx_msix_default },
3431         { "rsp_q", qla24xx_msix_rsp_q },
3432         { "atio_q", qla83xx_msix_atio_q },
3433         { "qpair_multiq", qla2xxx_msix_rsp_q },
3434 };
3435
3436 static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
3437         { "qla2xxx (default)", qla82xx_msix_default },
3438         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3439 };
3440
3441 static int
3442 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3443 {
3444         int i, ret;
3445         struct qla_msix_entry *qentry;
3446         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3447         int min_vecs = QLA_BASE_VECTORS;
3448         struct irq_affinity desc = {
3449                 .pre_vectors = QLA_BASE_VECTORS,
3450         };
3451
3452         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3453             IS_ATIO_MSIX_CAPABLE(ha)) {
3454                 desc.pre_vectors++;
3455                 min_vecs++;
3456         }
3457
3458         if (USER_CTRL_IRQ(ha) || !ha->mqiobase) {
3459                 /* user wants to control IRQ setting for target mode */
3460                 ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
3461                     ha->msix_count, PCI_IRQ_MSIX);
3462         } else
3463                 ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
3464                     ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3465                     &desc);
3466
3467         if (ret < 0) {
3468                 ql_log(ql_log_fatal, vha, 0x00c7,
3469                     "MSI-X: Failed to enable support, "
3470                     "giving   up -- %d/%d.\n",
3471                     ha->msix_count, ret);
3472                 goto msix_out;
3473         } else if (ret < ha->msix_count) {
3474                 ql_log(ql_log_warn, vha, 0x00c6,
3475                     "MSI-X: Failed to enable support "
3476                      "with %d vectors, using %d vectors.\n",
3477                     ha->msix_count, ret);
3478                 ha->msix_count = ret;
3479                 /* Recalculate queue values */
3480                 if (ha->mqiobase && (ql2xmqsupport || ql2xnvmeenable)) {
3481                         ha->max_req_queues = ha->msix_count - 1;
3482
3483                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3484                         if (QLA_TGT_MODE_ENABLED())
3485                                 ha->max_req_queues--;
3486
3487                         ha->max_rsp_queues = ha->max_req_queues;
3488
3489                         ha->max_qpairs = ha->max_req_queues - 1;
3490                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3491                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3492                 }
3493         }
3494         vha->irq_offset = desc.pre_vectors;
3495         ha->msix_entries = kcalloc(ha->msix_count,
3496                                    sizeof(struct qla_msix_entry),
3497                                    GFP_KERNEL);
3498         if (!ha->msix_entries) {
3499                 ql_log(ql_log_fatal, vha, 0x00c8,
3500                     "Failed to allocate memory for ha->msix_entries.\n");
3501                 ret = -ENOMEM;
3502                 goto free_irqs;
3503         }
3504         ha->flags.msix_enabled = 1;
3505
3506         for (i = 0; i < ha->msix_count; i++) {
3507                 qentry = &ha->msix_entries[i];
3508                 qentry->vector = pci_irq_vector(ha->pdev, i);
3509                 qentry->entry = i;
3510                 qentry->have_irq = 0;
3511                 qentry->in_use = 0;
3512                 qentry->handle = NULL;
3513         }
3514
3515         /* Enable MSI-X vectors for the base queue */
3516         for (i = 0; i < QLA_BASE_VECTORS; i++) {
3517                 qentry = &ha->msix_entries[i];
3518                 qentry->handle = rsp;
3519                 rsp->msix = qentry;
3520                 scnprintf(qentry->name, sizeof(qentry->name),
3521                     "qla2xxx%lu_%s", vha->host_no, msix_entries[i].name);
3522                 if (IS_P3P_TYPE(ha))
3523                         ret = request_irq(qentry->vector,
3524                                 qla82xx_msix_entries[i].handler,
3525                                 0, qla82xx_msix_entries[i].name, rsp);
3526                 else
3527                         ret = request_irq(qentry->vector,
3528                                 msix_entries[i].handler,
3529                                 0, qentry->name, rsp);
3530                 if (ret)
3531                         goto msix_register_fail;
3532                 qentry->have_irq = 1;
3533                 qentry->in_use = 1;
3534         }
3535
3536         /*
3537          * If target mode is enable, also request the vector for the ATIO
3538          * queue.
3539          */
3540         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3541             IS_ATIO_MSIX_CAPABLE(ha)) {
3542                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
3543                 rsp->msix = qentry;
3544                 qentry->handle = rsp;
3545                 scnprintf(qentry->name, sizeof(qentry->name),
3546                     "qla2xxx%lu_%s", vha->host_no,
3547                     msix_entries[QLA_ATIO_VECTOR].name);
3548                 qentry->in_use = 1;
3549                 ret = request_irq(qentry->vector,
3550                         msix_entries[QLA_ATIO_VECTOR].handler,
3551                         0, qentry->name, rsp);
3552                 qentry->have_irq = 1;
3553         }
3554
3555 msix_register_fail:
3556         if (ret) {
3557                 ql_log(ql_log_fatal, vha, 0x00cb,
3558                     "MSI-X: unable to register handler -- %x/%d.\n",
3559                     qentry->vector, ret);
3560                 qla2x00_free_irqs(vha);
3561                 ha->mqenable = 0;
3562                 goto msix_out;
3563         }
3564
3565         /* Enable MSI-X vector for response queue update for queue 0 */
3566         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
3567                 if (ha->msixbase && ha->mqiobase &&
3568                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3569                      ql2xmqsupport))
3570                         ha->mqenable = 1;
3571         } else
3572                 if (ha->mqiobase &&
3573                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3574                      ql2xmqsupport))
3575                         ha->mqenable = 1;
3576         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3577             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3578             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3579         ql_dbg(ql_dbg_init, vha, 0x0055,
3580             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3581             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3582
3583 msix_out:
3584         return ret;
3585
3586 free_irqs:
3587         pci_free_irq_vectors(ha->pdev);
3588         goto msix_out;
3589 }
3590
3591 int
3592 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3593 {
3594         int ret = QLA_FUNCTION_FAILED;
3595         device_reg_t *reg = ha->iobase;
3596         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3597
3598         /* If possible, enable MSI-X. */
3599         if (ql2xenablemsix == 0 || (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
3600             !IS_QLA8432(ha) && !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) &&
3601             !IS_QLAFX00(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)))
3602                 goto skip_msi;
3603
3604         if (ql2xenablemsix == 2)
3605                 goto skip_msix;
3606
3607         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3608                 (ha->pdev->subsystem_device == 0x7040 ||
3609                 ha->pdev->subsystem_device == 0x7041 ||
3610                 ha->pdev->subsystem_device == 0x1705)) {
3611                 ql_log(ql_log_warn, vha, 0x0034,
3612                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3613                         ha->pdev->subsystem_vendor,
3614                         ha->pdev->subsystem_device);
3615                 goto skip_msi;
3616         }
3617
3618         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3619                 ql_log(ql_log_warn, vha, 0x0035,
3620                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3621                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3622                 goto skip_msix;
3623         }
3624
3625         ret = qla24xx_enable_msix(ha, rsp);
3626         if (!ret) {
3627                 ql_dbg(ql_dbg_init, vha, 0x0036,
3628                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3629                     ha->chip_revision, ha->fw_attributes);
3630                 goto clear_risc_ints;
3631         }
3632
3633 skip_msix:
3634
3635         ql_log(ql_log_info, vha, 0x0037,
3636             "Falling back-to MSI mode -%d.\n", ret);
3637
3638         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3639             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3640             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3641                 goto skip_msi;
3642
3643         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
3644         if (!ret) {
3645                 ql_dbg(ql_dbg_init, vha, 0x0038,
3646                     "MSI: Enabled.\n");
3647                 ha->flags.msi_enabled = 1;
3648         } else
3649                 ql_log(ql_log_warn, vha, 0x0039,
3650                     "Falling back-to INTa mode -- %d.\n", ret);
3651 skip_msi:
3652
3653         /* Skip INTx on ISP82xx. */
3654         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3655                 return QLA_FUNCTION_FAILED;
3656
3657         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3658             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3659             QLA2XXX_DRIVER_NAME, rsp);
3660         if (ret) {
3661                 ql_log(ql_log_warn, vha, 0x003a,
3662                     "Failed to reserve interrupt %d already in use.\n",
3663                     ha->pdev->irq);
3664                 goto fail;
3665         } else if (!ha->flags.msi_enabled) {
3666                 ql_dbg(ql_dbg_init, vha, 0x0125,
3667                     "INTa mode: Enabled.\n");
3668                 ha->flags.mr_intr_valid = 1;
3669         }
3670
3671 clear_risc_ints:
3672         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3673                 goto fail;
3674
3675         spin_lock_irq(&ha->hardware_lock);
3676         WRT_REG_WORD(&reg->isp.semaphore, 0);
3677         spin_unlock_irq(&ha->hardware_lock);
3678
3679 fail:
3680         return ret;
3681 }
3682
3683 void
3684 qla2x00_free_irqs(scsi_qla_host_t *vha)
3685 {
3686         struct qla_hw_data *ha = vha->hw;
3687         struct rsp_que *rsp;
3688         struct qla_msix_entry *qentry;
3689         int i;
3690
3691         /*
3692          * We need to check that ha->rsp_q_map is valid in case we are called
3693          * from a probe failure context.
3694          */
3695         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3696                 goto free_irqs;
3697         rsp = ha->rsp_q_map[0];
3698
3699         if (ha->flags.msix_enabled) {
3700                 for (i = 0; i < ha->msix_count; i++) {
3701                         qentry = &ha->msix_entries[i];
3702                         if (qentry->have_irq) {
3703                                 irq_set_affinity_notifier(qentry->vector, NULL);
3704                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
3705                         }
3706                 }
3707                 kfree(ha->msix_entries);
3708                 ha->msix_entries = NULL;
3709                 ha->flags.msix_enabled = 0;
3710                 ql_dbg(ql_dbg_init, vha, 0x0042,
3711                         "Disabled MSI-X.\n");
3712         } else {
3713                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
3714         }
3715
3716 free_irqs:
3717         pci_free_irq_vectors(ha->pdev);
3718 }
3719
3720 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
3721         struct qla_msix_entry *msix, int vector_type)
3722 {
3723         const struct qla_init_msix_entry *intr = &msix_entries[vector_type];
3724         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3725         int ret;
3726
3727         scnprintf(msix->name, sizeof(msix->name),
3728             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
3729         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
3730         if (ret) {
3731                 ql_log(ql_log_fatal, vha, 0x00e6,
3732                     "MSI-X: Unable to register handler -- %x/%d.\n",
3733                     msix->vector, ret);
3734                 return ret;
3735         }
3736         msix->have_irq = 1;
3737         msix->handle = qpair;
3738         return ret;
3739 }