drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_target.h"
   9
  10 #include <linux/delay.h>
  11 #include <linux/slab.h>
  12 #include <linux/cpu.h>
  13 #include <linux/t10-pi.h>
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsi_bsg_fc.h>
  16 #include <scsi/scsi_eh.h>
  17 #include <scsi/fc/fc_fs.h>
  18 #include <linux/nvme-fc-driver.h>
  19
  20 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  21 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  22 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  23 static int qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  24         sts_entry_t *);
  25
  26 const char *const port_state_str[] = {
  27         "Unknown",
  28         "UNCONFIGURED",
  29         "DEAD",
  30         "LOST",
  31         "ONLINE"
  32 };
  33
  34 /**
  35  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  36  * @irq: interrupt number
  37  * @dev_id: SCSI driver HA context
  38  *
  39  * Called by system whenever the host adapter generates an interrupt.
  40  *
  41  * Returns handled flag.
  42  */
  43 irqreturn_t
  44 qla2100_intr_handler(int irq, void *dev_id)
  45 {
  46         scsi_qla_host_t *vha;
  47         struct qla_hw_data *ha;
  48         struct device_reg_2xxx __iomem *reg;
  49         int             status;
  50         unsigned long   iter;
  51         uint16_t        hccr;
  52         uint16_t        mb[8];
  53         struct rsp_que *rsp;
  54         unsigned long   flags;
  55
  56         rsp = (struct rsp_que *) dev_id;
  57         if (!rsp) {
  58                 ql_log(ql_log_info, NULL, 0x505d,
  59                     "%s: NULL response queue pointer.\n", __func__);
  60                 return (IRQ_NONE);
  61         }
  62
  63         ha = rsp->hw;
  64         reg = &ha->iobase->isp;
  65         status = 0;
  66
  67         spin_lock_irqsave(&ha->hardware_lock, flags);
  68         vha = pci_get_drvdata(ha->pdev);
  69         for (iter = 50; iter--; ) {
  70                 hccr = RD_REG_WORD(&reg->hccr);
  71                 if (qla2x00_check_reg16_for_disconnect(vha, hccr))
  72                         break;
  73                 if (hccr & HCCR_RISC_PAUSE) {
  74                         if (pci_channel_offline(ha->pdev))
  75                                 break;
  76
  77                         /*
  78                          * Issue a "HARD" reset in order for the RISC interrupt
  79                          * bit to be cleared.  Schedule a big hammer to get
  80                          * out of the RISC PAUSED state.
  81                          */
  82                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  83                         RD_REG_WORD(&reg->hccr);
  84
  85                         ha->isp_ops->fw_dump(vha, 1);
  86                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  87                         break;
  88                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  89                         break;
  90
  91                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  92                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  93                         RD_REG_WORD(&reg->hccr);
  94
  95                         /* Get mailbox data. */
  96                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  97                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  98                                 qla2x00_mbx_completion(vha, mb[0]);
  99                                 status |= MBX_INTERRUPT;
 100                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
 101                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 102                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 103                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 104                                 qla2x00_async_event(vha, rsp, mb);
 105                         } else {
 106                                 /*EMPTY*/
 107                                 ql_dbg(ql_dbg_async, vha, 0x5025,
 108                                     "Unrecognized interrupt type (%d).\n",
 109                                     mb[0]);
 110                         }
 111                         /* Release mailbox registers. */
 112                         WRT_REG_WORD(&reg->semaphore, 0);
 113                         RD_REG_WORD(&reg->semaphore);
 114                 } else {
 115                         qla2x00_process_response_queue(rsp);
 116
 117                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 118                         RD_REG_WORD(&reg->hccr);
 119                 }
 120         }
 121         qla2x00_handle_mbx_completion(ha, status);
 122         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 123
 124         return (IRQ_HANDLED);
 125 }
 126
 127 bool
 128 qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
 129 {
 130         /* Check for PCI disconnection */
 131         if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
 132                 if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
 133                     !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
 134                     !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
 135                         /*
 136                          * Schedule this (only once) on the default system
 137                          * workqueue so that all the adapter workqueues and the
 138                          * DPC thread can be shutdown cleanly.
 139                          */
 140                         schedule_work(&vha->hw->board_disable);
 141                 }
 142                 return true;
 143         } else
 144                 return false;
 145 }
 146
 147 bool
 148 qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
 149 {
 150         return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
 151 }
 152
 153 /**
 154  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 155  * @irq: interrupt number
 156  * @dev_id: SCSI driver HA context
 157  *
 158  * Called by system whenever the host adapter generates an interrupt.
 159  *
 160  * Returns handled flag.
 161  */
 162 irqreturn_t
 163 qla2300_intr_handler(int irq, void *dev_id)
 164 {
 165         scsi_qla_host_t *vha;
 166         struct device_reg_2xxx __iomem *reg;
 167         int             status;
 168         unsigned long   iter;
 169         uint32_t        stat;
 170         uint16_t        hccr;
 171         uint16_t        mb[8];
 172         struct rsp_que *rsp;
 173         struct qla_hw_data *ha;
 174         unsigned long   flags;
 175
 176         rsp = (struct rsp_que *) dev_id;
 177         if (!rsp) {
 178                 ql_log(ql_log_info, NULL, 0x5058,
 179                     "%s: NULL response queue pointer.\n", __func__);
 180                 return (IRQ_NONE);
 181         }
 182
 183         ha = rsp->hw;
 184         reg = &ha->iobase->isp;
 185         status = 0;
 186
 187         spin_lock_irqsave(&ha->hardware_lock, flags);
 188         vha = pci_get_drvdata(ha->pdev);
 189         for (iter = 50; iter--; ) {
 190                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 191                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
 192                         break;
 193                 if (stat & HSR_RISC_PAUSED) {
 194                         if (unlikely(pci_channel_offline(ha->pdev)))
 195                                 break;
 196
 197                         hccr = RD_REG_WORD(&reg->hccr);
 198
 199                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 200                                 ql_log(ql_log_warn, vha, 0x5026,
 201                                     "Parity error -- HCCR=%x, Dumping "
 202                                     "firmware.\n", hccr);
 203                         else
 204                                 ql_log(ql_log_warn, vha, 0x5027,
 205                                     "RISC paused -- HCCR=%x, Dumping "
 206                                     "firmware.\n", hccr);
 207
 208                         /*
 209                          * Issue a "HARD" reset in order for the RISC
 210                          * interrupt bit to be cleared.  Schedule a big
 211                          * hammer to get out of the RISC PAUSED state.
 212                          */
 213                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 214                         RD_REG_WORD(&reg->hccr);
 215
 216                         ha->isp_ops->fw_dump(vha, 1);
 217                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 218                         break;
 219                 } else if ((stat & HSR_RISC_INT) == 0)
 220                         break;
 221
 222                 switch (stat & 0xff) {
 223                 case 0x1:
 224                 case 0x2:
 225                 case 0x10:
 226                 case 0x11:
 227                         qla2x00_mbx_completion(vha, MSW(stat));
 228                         status |= MBX_INTERRUPT;
 229
 230                         /* Release mailbox registers. */
 231                         WRT_REG_WORD(&reg->semaphore, 0);
 232                         break;
 233                 case 0x12:
 234                         mb[0] = MSW(stat);
 235                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 236                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 237                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 238                         qla2x00_async_event(vha, rsp, mb);
 239                         break;
 240                 case 0x13:
 241                         qla2x00_process_response_queue(rsp);
 242                         break;
 243                 case 0x15:
 244                         mb[0] = MBA_CMPLT_1_16BIT;
 245                         mb[1] = MSW(stat);
 246                         qla2x00_async_event(vha, rsp, mb);
 247                         break;
 248                 case 0x16:
 249                         mb[0] = MBA_SCSI_COMPLETION;
 250                         mb[1] = MSW(stat);
 251                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 252                         qla2x00_async_event(vha, rsp, mb);
 253                         break;
 254                 default:
 255                         ql_dbg(ql_dbg_async, vha, 0x5028,
 256                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 257                         break;
 258                 }
 259                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 260                 RD_REG_WORD_RELAXED(&reg->hccr);
 261         }
 262         qla2x00_handle_mbx_completion(ha, status);
 263         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 264
 265         return (IRQ_HANDLED);
 266 }
 267
 268 /**
 269  * qla2x00_mbx_completion() - Process mailbox command completions.
 270  * @vha: SCSI driver HA context
 271  * @mb0: Mailbox0 register
 272  */
 273 static void
 274 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 275 {
 276         uint16_t        cnt;
 277         uint32_t        mboxes;
 278         uint16_t __iomem *wptr;
 279         struct qla_hw_data *ha = vha->hw;
 280         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 281
 282         /* Read all mbox registers? */
 283         WARN_ON_ONCE(ha->mbx_count > 32);
 284         mboxes = (1ULL << ha->mbx_count) - 1;
 285         if (!ha->mcp)
 286                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
 287         else
 288                 mboxes = ha->mcp->in_mb;
 289
 290         /* Load return mailbox registers. */
 291         ha->flags.mbox_int = 1;
 292         ha->mailbox_out[0] = mb0;
 293         mboxes >>= 1;
 294         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 295
 296         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 297                 if (IS_QLA2200(ha) && cnt == 8)
 298                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 299                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 300                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 301                 else if (mboxes & BIT_0)
 302                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 303
 304                 wptr++;
 305                 mboxes >>= 1;
 306         }
 307 }
 308
 309 static void
 310 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 311 {
 312         static char *event[] =
 313                 { "Complete", "Request Notification", "Time Extension" };
 314         int rval;
 315         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 316         struct device_reg_82xx __iomem *reg82 = &vha->hw->iobase->isp82;
 317         uint16_t __iomem *wptr;
 318         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 319
 320         /* Seed data -- mailbox1 -> mailbox7. */
 321         if (IS_QLA81XX(vha->hw) || IS_QLA83XX(vha->hw))
 322                 wptr = (uint16_t __iomem *)&reg24->mailbox1;
 323         else if (IS_QLA8044(vha->hw))
 324                 wptr = (uint16_t __iomem *)&reg82->mailbox_out[1];
 325         else
 326                 return;
 327
 328         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 329                 mb[cnt] = RD_REG_WORD(wptr);
 330
 331         ql_dbg(ql_dbg_async, vha, 0x5021,
 332             "Inter-Driver Communication %s -- "
 333             "%04x %04x %04x %04x %04x %04x %04x.\n",
 334             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 335             mb[4], mb[5], mb[6]);
 336         switch (aen) {
 337         /* Handle IDC Error completion case. */
 338         case MBA_IDC_COMPLETE:
 339                 if (mb[1] >> 15) {
 340                         vha->hw->flags.idc_compl_status = 1;
 341                         if (vha->hw->notify_dcbx_comp && !vha->vp_idx)
 342                                 complete(&vha->hw->dcbx_comp);
 343                 }
 344                 break;
 345
 346         case MBA_IDC_NOTIFY:
 347                 /* Acknowledgement needed? [Notify && non-zero timeout]. */
 348                 timeout = (descr >> 8) & 0xf;
 349                 ql_dbg(ql_dbg_async, vha, 0x5022,
 350                     "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 351                     vha->host_no, event[aen & 0xff], timeout);
 352
 353                 if (!timeout)
 354                         return;
 355                 rval = qla2x00_post_idc_ack_work(vha, mb);
 356                 if (rval != QLA_SUCCESS)
 357                         ql_log(ql_log_warn, vha, 0x5023,
 358                             "IDC failed to post ACK.\n");
 359                 break;
 360         case MBA_IDC_TIME_EXT:
 361                 vha->hw->idc_extend_tmo = descr;
 362                 ql_dbg(ql_dbg_async, vha, 0x5087,
 363                     "%lu Inter-Driver Communication %s -- "
 364                     "Extend timeout by=%d.\n",
 365                     vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
 366                 break;
 367         }
 368 }
 369
 370 #define LS_UNKNOWN      2
 371 const char *
 372 qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
 373 {
 374         static const char *const link_speeds[] = {
 375                 "1", "2", "?", "4", "8", "16", "32", "10"
 376         };
 377 #define QLA_LAST_SPEED (ARRAY_SIZE(link_speeds) - 1)
 378
 379         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 380                 return link_speeds[0];
 381         else if (speed == 0x13)
 382                 return link_speeds[QLA_LAST_SPEED];
 383         else if (speed < QLA_LAST_SPEED)
 384                 return link_speeds[speed];
 385         else
 386                 return link_speeds[LS_UNKNOWN];
 387 }
 388
 389 static void
 390 qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 391 {
 392         struct qla_hw_data *ha = vha->hw;
 393
 394         /*
 395          * 8200 AEN Interpretation:
 396          * mb[0] = AEN code
 397          * mb[1] = AEN Reason code
 398          * mb[2] = LSW of Peg-Halt Status-1 Register
 399          * mb[6] = MSW of Peg-Halt Status-1 Register
 400          * mb[3] = LSW of Peg-Halt Status-2 register
 401          * mb[7] = MSW of Peg-Halt Status-2 register
 402          * mb[4] = IDC Device-State Register value
 403          * mb[5] = IDC Driver-Presence Register value
 404          */
 405         ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
 406             "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
 407             mb[0], mb[1], mb[2], mb[6]);
 408         ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
 409             "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
 410             "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);
 411
 412         if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
 413                                 IDC_HEARTBEAT_FAILURE)) {
 414                 ha->flags.nic_core_hung = 1;
 415                 ql_log(ql_log_warn, vha, 0x5060,
 416                     "83XX: F/W Error Reported: Check if reset required.\n");
 417
 418                 if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
 419                         uint32_t protocol_engine_id, fw_err_code, err_level;
 420
 421                         /*
 422                          * IDC_PEG_HALT_STATUS_CHANGE interpretation:
 423                          *  - PEG-Halt Status-1 Register:
 424                          *      (LSW = mb[2], MSW = mb[6])
 425                          *      Bits 0-7   = protocol-engine ID
 426                          *      Bits 8-28  = f/w error code
 427                          *      Bits 29-31 = Error-level
 428                          *          Error-level 0x1 = Non-Fatal error
 429                          *          Error-level 0x2 = Recoverable Fatal error
 430                          *          Error-level 0x4 = UnRecoverable Fatal error
 431                          *  - PEG-Halt Status-2 Register:
 432                          *      (LSW = mb[3], MSW = mb[7])
 433                          */
 434                         protocol_engine_id = (mb[2] & 0xff);
 435                         fw_err_code = (((mb[2] & 0xff00) >> 8) |
 436                             ((mb[6] & 0x1fff) << 8));
 437                         err_level = ((mb[6] & 0xe000) >> 13);
 438                         ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
 439                             "Register: protocol_engine_id=0x%x "
 440                             "fw_err_code=0x%x err_level=0x%x.\n",
 441                             protocol_engine_id, fw_err_code, err_level);
 442                         ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
 443                             "Register: 0x%x%x.\n", mb[7], mb[3]);
 444                         if (err_level == ERR_LEVEL_NON_FATAL) {
 445                                 ql_log(ql_log_warn, vha, 0x5063,
 446                                     "Not a fatal error, f/w has recovered itself.\n");
 447                         } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
 448                                 ql_log(ql_log_fatal, vha, 0x5064,
 449                                     "Recoverable Fatal error: Chip reset "
 450                                     "required.\n");
 451                                 qla83xx_schedule_work(vha,
 452                                     QLA83XX_NIC_CORE_RESET);
 453                         } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
 454                                 ql_log(ql_log_fatal, vha, 0x5065,
 455                                     "Unrecoverable Fatal error: Set FAILED "
 456                                     "state, reboot required.\n");
 457                                 qla83xx_schedule_work(vha,
 458                                     QLA83XX_NIC_CORE_UNRECOVERABLE);
 459                         }
 460                 }
 461
 462                 if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
 463                         uint16_t peg_fw_state, nw_interface_link_up;
 464                         uint16_t nw_interface_signal_detect, sfp_status;
 465                         uint16_t htbt_counter, htbt_monitor_enable;
 466                         uint16_t sfp_additional_info, sfp_multirate;
 467                         uint16_t sfp_tx_fault, link_speed, dcbx_status;
 468
 469                         /*
 470                          * IDC_NIC_FW_REPORTED_FAILURE interpretation:
 471                          *  - PEG-to-FC Status Register:
 472                          *      (LSW = mb[2], MSW = mb[6])
 473                          *      Bits 0-7   = Peg-Firmware state
 474                          *      Bit 8      = N/W Interface Link-up
 475                          *      Bit 9      = N/W Interface signal detected
 476                          *      Bits 10-11 = SFP Status
 477                          *        SFP Status 0x0 = SFP+ transceiver not expected
 478                          *        SFP Status 0x1 = SFP+ transceiver not present
 479                          *        SFP Status 0x2 = SFP+ transceiver invalid
 480                          *        SFP Status 0x3 = SFP+ transceiver present and
 481                          *        valid
 482                          *      Bits 12-14 = Heartbeat Counter
 483                          *      Bit 15     = Heartbeat Monitor Enable
 484                          *      Bits 16-17 = SFP Additional Info
 485                          *        SFP info 0x0 = Unregocnized transceiver for
 486                          *        Ethernet
 487                          *        SFP info 0x1 = SFP+ brand validation failed
 488                          *        SFP info 0x2 = SFP+ speed validation failed
 489                          *        SFP info 0x3 = SFP+ access error
 490                          *      Bit 18     = SFP Multirate
 491                          *      Bit 19     = SFP Tx Fault
 492                          *      Bits 20-22 = Link Speed
 493                          *      Bits 23-27 = Reserved
 494                          *      Bits 28-30 = DCBX Status
 495                          *        DCBX Status 0x0 = DCBX Disabled
 496                          *        DCBX Status 0x1 = DCBX Enabled
 497                          *        DCBX Status 0x2 = DCBX Exchange error
 498                          *      Bit 31     = Reserved
 499                          */
 500                         peg_fw_state = (mb[2] & 0x00ff);
 501                         nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
 502                         nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
 503                         sfp_status = ((mb[2] & 0x0c00) >> 10);
 504                         htbt_counter = ((mb[2] & 0x7000) >> 12);
 505                         htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
 506                         sfp_additional_info = (mb[6] & 0x0003);
 507                         sfp_multirate = ((mb[6] & 0x0004) >> 2);
 508                         sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
 509                         link_speed = ((mb[6] & 0x0070) >> 4);
 510                         dcbx_status = ((mb[6] & 0x7000) >> 12);
 511
 512                         ql_log(ql_log_warn, vha, 0x5066,
 513                             "Peg-to-Fc Status Register:\n"
 514                             "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
 515                             "nw_interface_signal_detect=0x%x"
 516                             "\nsfp_statis=0x%x.\n ", peg_fw_state,
 517                             nw_interface_link_up, nw_interface_signal_detect,
 518                             sfp_status);
 519                         ql_log(ql_log_warn, vha, 0x5067,
 520                             "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
 521                             "sfp_additional_info=0x%x, sfp_multirate=0x%x.\n ",
 522                             htbt_counter, htbt_monitor_enable,
 523                             sfp_additional_info, sfp_multirate);
 524                         ql_log(ql_log_warn, vha, 0x5068,
 525                             "sfp_tx_fault=0x%x, link_state=0x%x, "
 526                             "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
 527                             dcbx_status);
 528
 529                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 530                 }
 531
 532                 if (mb[1] & IDC_HEARTBEAT_FAILURE) {
 533                         ql_log(ql_log_warn, vha, 0x5069,
 534                             "Heartbeat Failure encountered, chip reset "
 535                             "required.\n");
 536
 537                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 538                 }
 539         }
 540
 541         if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
 542                 ql_log(ql_log_info, vha, 0x506a,
 543                     "IDC Device-State changed = 0x%x.\n", mb[4]);
 544                 if (ha->flags.nic_core_reset_owner)
 545                         return;
 546                 qla83xx_schedule_work(vha, MBA_IDC_AEN);
 547         }
 548 }
 549
 550 int
 551 qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
 552 {
 553         struct qla_hw_data *ha = vha->hw;
 554         scsi_qla_host_t *vp;
 555         uint32_t vp_did;
 556         unsigned long flags;
 557         int ret = 0;
 558
 559         if (!ha->num_vhosts)
 560                 return ret;
 561
 562         spin_lock_irqsave(&ha->vport_slock, flags);
 563         list_for_each_entry(vp, &ha->vp_list, list) {
 564                 vp_did = vp->d_id.b24;
 565                 if (vp_did == rscn_entry) {
 566                         ret = 1;
 567                         break;
 568                 }
 569         }
 570         spin_unlock_irqrestore(&ha->vport_slock, flags);
 571
 572         return ret;
 573 }
 574
 575 fc_port_t *
 576 qla2x00_find_fcport_by_loopid(scsi_qla_host_t *vha, uint16_t loop_id)
 577 {
 578         fc_port_t *f, *tf;
 579
 580         f = tf = NULL;
 581         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list)
 582                 if (f->loop_id == loop_id)
 583                         return f;
 584         return NULL;
 585 }
 586
 587 fc_port_t *
 588 qla2x00_find_fcport_by_wwpn(scsi_qla_host_t *vha, u8 *wwpn, u8 incl_deleted)
 589 {
 590         fc_port_t *f, *tf;
 591
 592         f = tf = NULL;
 593         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 594                 if (memcmp(f->port_name, wwpn, WWN_SIZE) == 0) {
 595                         if (incl_deleted)
 596                                 return f;
 597                         else if (f->deleted == 0)
 598                                 return f;
 599                 }
 600         }
 601         return NULL;
 602 }
 603
 604 fc_port_t *
 605 qla2x00_find_fcport_by_nportid(scsi_qla_host_t *vha, port_id_t *id,
 606         u8 incl_deleted)
 607 {
 608         fc_port_t *f, *tf;
 609
 610         f = tf = NULL;
 611         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 612                 if (f->d_id.b24 == id->b24) {
 613                         if (incl_deleted)
 614                                 return f;
 615                         else if (f->deleted == 0)
 616                                 return f;
 617                 }
 618         }
 619         return NULL;
 620 }
 621
 622 /**
 623  * qla2x00_async_event() - Process aynchronous events.
 624  * @vha: SCSI driver HA context
 625  * @rsp: response queue
 626  * @mb: Mailbox registers (0 - 3)
 627  */
 628 void
 629 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 630 {
 631         uint16_t        handle_cnt;
 632         uint16_t        cnt, mbx;
 633         uint32_t        handles[5];
 634         struct qla_hw_data *ha = vha->hw;
 635         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 636         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 637         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 638         uint32_t        rscn_entry, host_pid;
 639         unsigned long   flags;
 640         fc_port_t       *fcport = NULL;
 641
 642         if (!vha->hw->flags.fw_started)
 643                 return;
 644
 645         /* Setup to process RIO completion. */
 646         handle_cnt = 0;
 647         if (IS_CNA_CAPABLE(ha))
 648                 goto skip_rio;
 649         switch (mb[0]) {
 650         case MBA_SCSI_COMPLETION:
 651                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 652                 handle_cnt = 1;
 653                 break;
 654         case MBA_CMPLT_1_16BIT:
 655                 handles[0] = mb[1];
 656                 handle_cnt = 1;
 657                 mb[0] = MBA_SCSI_COMPLETION;
 658                 break;
 659         case MBA_CMPLT_2_16BIT:
 660                 handles[0] = mb[1];
 661                 handles[1] = mb[2];
 662                 handle_cnt = 2;
 663                 mb[0] = MBA_SCSI_COMPLETION;
 664                 break;
 665         case MBA_CMPLT_3_16BIT:
 666                 handles[0] = mb[1];
 667                 handles[1] = mb[2];
 668                 handles[2] = mb[3];
 669                 handle_cnt = 3;
 670                 mb[0] = MBA_SCSI_COMPLETION;
 671                 break;
 672         case MBA_CMPLT_4_16BIT:
 673                 handles[0] = mb[1];
 674                 handles[1] = mb[2];
 675                 handles[2] = mb[3];
 676                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 677                 handle_cnt = 4;
 678                 mb[0] = MBA_SCSI_COMPLETION;
 679                 break;
 680         case MBA_CMPLT_5_16BIT:
 681                 handles[0] = mb[1];
 682                 handles[1] = mb[2];
 683                 handles[2] = mb[3];
 684                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 685                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 686                 handle_cnt = 5;
 687                 mb[0] = MBA_SCSI_COMPLETION;
 688                 break;
 689         case MBA_CMPLT_2_32BIT:
 690                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 691                 handles[1] = le32_to_cpu(
 692                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 693                     RD_MAILBOX_REG(ha, reg, 6));
 694                 handle_cnt = 2;
 695                 mb[0] = MBA_SCSI_COMPLETION;
 696                 break;
 697         default:
 698                 break;
 699         }
 700 skip_rio:
 701         switch (mb[0]) {
 702         case MBA_SCSI_COMPLETION:       /* Fast Post */
 703                 if (!vha->flags.online)
 704                         break;
 705
 706                 for (cnt = 0; cnt < handle_cnt; cnt++)
 707                         qla2x00_process_completed_request(vha, rsp->req,
 708                                 handles[cnt]);
 709                 break;
 710
 711         case MBA_RESET:                 /* Reset */
 712                 ql_dbg(ql_dbg_async, vha, 0x5002,
 713                     "Asynchronous RESET.\n");
 714
 715                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 716                 break;
 717
 718         case MBA_SYSTEM_ERR:            /* System Error */
 719                 mbx = (IS_QLA81XX(ha) || IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
 720                     IS_QLA28XX(ha)) ?
 721                         RD_REG_WORD(&reg24->mailbox7) : 0;
 722                 ql_log(ql_log_warn, vha, 0x5003,
 723                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 724                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 725                 ha->fw_dump_mpi =
 726                     (IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&
 727                     RD_REG_WORD(&reg24->mailbox7) & BIT_8;
 728                 ha->isp_ops->fw_dump(vha, 1);
 729                 ha->flags.fw_init_done = 0;
 730                 QLA_FW_STOPPED(ha);
 731
 732                 if (IS_FWI2_CAPABLE(ha)) {
 733                         if (mb[1] == 0 && mb[2] == 0) {
 734                                 ql_log(ql_log_fatal, vha, 0x5004,
 735                                     "Unrecoverable Hardware Error: adapter "
 736                                     "marked OFFLINE!\n");
 737                                 vha->flags.online = 0;
 738                                 vha->device_flags |= DFLG_DEV_FAILED;
 739                         } else {
 740                                 /* Check to see if MPI timeout occurred */
 741                                 if ((mbx & MBX_3) && (ha->port_no == 0))
 742                                         set_bit(MPI_RESET_NEEDED,
 743                                             &vha->dpc_flags);
 744
 745                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 746                         }
 747                 } else if (mb[1] == 0) {
 748                         ql_log(ql_log_fatal, vha, 0x5005,
 749                             "Unrecoverable Hardware Error: adapter marked "
 750                             "OFFLINE!\n");
 751                         vha->flags.online = 0;
 752                         vha->device_flags |= DFLG_DEV_FAILED;
 753                 } else
 754                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 755                 break;
 756
 757         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 758                 ql_log(ql_log_warn, vha, 0x5006,
 759                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 760
 761                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 762                 break;
 763
 764         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 765                 ql_log(ql_log_warn, vha, 0x5007,
 766                     "ISP Response Transfer Error (%x).\n", mb[1]);
 767
 768                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 769                 break;
 770
 771         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 772                 ql_dbg(ql_dbg_async, vha, 0x5008,
 773                     "Asynchronous WAKEUP_THRES (%x).\n", mb[1]);
 774                 break;
 775
 776         case MBA_LOOP_INIT_ERR:
 777                 ql_log(ql_log_warn, vha, 0x5090,
 778                     "LOOP INIT ERROR (%x).\n", mb[1]);
 779                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 780                 break;
 781
 782         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 783                 ha->flags.lip_ae = 1;
 784
 785                 ql_dbg(ql_dbg_async, vha, 0x5009,
 786                     "LIP occurred (%x).\n", mb[1]);
 787
 788                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 789                         atomic_set(&vha->loop_state, LOOP_DOWN);
 790                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 791                         qla2x00_mark_all_devices_lost(vha, 1);
 792                 }
 793
 794                 if (vha->vp_idx) {
 795                         atomic_set(&vha->vp_state, VP_FAILED);
 796                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 797                 }
 798
 799                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 800                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 801
 802                 vha->flags.management_server_logged_in = 0;
 803                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 804                 break;
 805
 806         case MBA_LOOP_UP:               /* Loop Up Event */
 807                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 808                         ha->link_data_rate = PORT_SPEED_1GB;
 809                 else
 810                         ha->link_data_rate = mb[1];
 811
 812                 ql_log(ql_log_info, vha, 0x500a,
 813                     "LOOP UP detected (%s Gbps).\n",
 814                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 815
 816                 vha->flags.management_server_logged_in = 0;
 817                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 818
 819                 if (AUTO_DETECT_SFP_SUPPORT(vha)) {
 820                         set_bit(DETECT_SFP_CHANGE, &vha->dpc_flags);
 821                         qla2xxx_wake_dpc(vha);
 822                 }
 823                 break;
 824
 825         case MBA_LOOP_DOWN:             /* Loop Down Event */
 826                 SAVE_TOPO(ha);
 827                 ha->flags.lip_ae = 0;
 828                 ha->current_topology = 0;
 829
 830                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 831                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 832                 mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
 833                         : mbx;
 834                 ql_log(ql_log_info, vha, 0x500b,
 835                     "LOOP DOWN detected (%x %x %x %x).\n",
 836                     mb[1], mb[2], mb[3], mbx);
 837
 838                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 839                         atomic_set(&vha->loop_state, LOOP_DOWN);
 840                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 841                         /*
 842                          * In case of loop down, restore WWPN from
 843                          * NVRAM in case of FA-WWPN capable ISP
 844                          * Restore for Physical Port only
 845                          */
 846                         if (!vha->vp_idx) {
 847                                 if (ha->flags.fawwpn_enabled &&
 848                                     (ha->current_topology == ISP_CFG_F)) {
 849                                         void *wwpn = ha->init_cb->port_name;
 850
 851                                         memcpy(vha->port_name, wwpn, WWN_SIZE);
 852                                         fc_host_port_name(vha->host) =
 853                                             wwn_to_u64(vha->port_name);
 854                                         ql_dbg(ql_dbg_init + ql_dbg_verbose,
 855                                             vha, 0x00d8, "LOOP DOWN detected,"
 856                                             "restore WWPN %016llx\n",
 857                                             wwn_to_u64(vha->port_name));
 858                                 }
 859
 860                                 clear_bit(VP_CONFIG_OK, &vha->vp_flags);
 861                         }
 862
 863                         vha->device_flags |= DFLG_NO_CABLE;
 864                         qla2x00_mark_all_devices_lost(vha, 1);
 865                 }
 866
 867                 if (vha->vp_idx) {
 868                         atomic_set(&vha->vp_state, VP_FAILED);
 869                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 870                 }
 871
 872                 vha->flags.management_server_logged_in = 0;
 873                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 874                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 875                 break;
 876
 877         case MBA_LIP_RESET:             /* LIP reset occurred */
 878                 ql_dbg(ql_dbg_async, vha, 0x500c,
 879                     "LIP reset occurred (%x).\n", mb[1]);
 880
 881                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 882                         atomic_set(&vha->loop_state, LOOP_DOWN);
 883                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 884                         qla2x00_mark_all_devices_lost(vha, 1);
 885                 }
 886
 887                 if (vha->vp_idx) {
 888                         atomic_set(&vha->vp_state, VP_FAILED);
 889                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 890                 }
 891
 892                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 893
 894                 ha->operating_mode = LOOP;
 895                 vha->flags.management_server_logged_in = 0;
 896                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 897                 break;
 898
 899         /* case MBA_DCBX_COMPLETE: */
 900         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 901                 ha->flags.lip_ae = 0;
 902
 903                 if (IS_QLA2100(ha))
 904                         break;
 905
 906                 if (IS_CNA_CAPABLE(ha)) {
 907                         ql_dbg(ql_dbg_async, vha, 0x500d,
 908                             "DCBX Completed -- %04x %04x %04x.\n",
 909                             mb[1], mb[2], mb[3]);
 910                         if (ha->notify_dcbx_comp && !vha->vp_idx)
 911                                 complete(&ha->dcbx_comp);
 912
 913                 } else
 914                         ql_dbg(ql_dbg_async, vha, 0x500e,
 915                             "Asynchronous P2P MODE received.\n");
 916
 917                 /*
 918                  * Until there's a transition from loop down to loop up, treat
 919                  * this as loop down only.
 920                  */
 921                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 922                         atomic_set(&vha->loop_state, LOOP_DOWN);
 923                         if (!atomic_read(&vha->loop_down_timer))
 924                                 atomic_set(&vha->loop_down_timer,
 925                                     LOOP_DOWN_TIME);
 926                         if (!N2N_TOPO(ha))
 927                                 qla2x00_mark_all_devices_lost(vha, 1);
 928                 }
 929
 930                 if (vha->vp_idx) {
 931                         atomic_set(&vha->vp_state, VP_FAILED);
 932                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 933                 }
 934
 935                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 936                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 937
 938                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 939                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 940
 941                 vha->flags.management_server_logged_in = 0;
 942                 break;
 943
 944         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 945                 if (IS_QLA2100(ha))
 946                         break;
 947
 948                 ql_dbg(ql_dbg_async, vha, 0x500f,
 949                     "Configuration change detected: value=%x.\n", mb[1]);
 950
 951                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 952                         atomic_set(&vha->loop_state, LOOP_DOWN);
 953                         if (!atomic_read(&vha->loop_down_timer))
 954                                 atomic_set(&vha->loop_down_timer,
 955                                     LOOP_DOWN_TIME);
 956                         qla2x00_mark_all_devices_lost(vha, 1);
 957                 }
 958
 959                 if (vha->vp_idx) {
 960                         atomic_set(&vha->vp_state, VP_FAILED);
 961                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 962                 }
 963
 964                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 965                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 966                 break;
 967
 968         case MBA_PORT_UPDATE:           /* Port database update */
 969                 /*
 970                  * Handle only global and vn-port update events
 971                  *
 972                  * Relevant inputs:
 973                  * mb[1] = N_Port handle of changed port
 974                  * OR 0xffff for global event
 975                  * mb[2] = New login state
 976                  * 7 = Port logged out
 977                  * mb[3] = LSB is vp_idx, 0xff = all vps
 978                  *
 979                  * Skip processing if:
 980                  *       Event is global, vp_idx is NOT all vps,
 981                  *           vp_idx does not match
 982                  *       Event is not global, vp_idx does not match
 983                  */
 984                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 985                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 986                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 987                         break;
 988
 989                 if (mb[2] == 0x7) {
 990                         ql_dbg(ql_dbg_async, vha, 0x5010,
 991                             "Port %s %04x %04x %04x.\n",
 992                             mb[1] == 0xffff ? "unavailable" : "logout",
 993                             mb[1], mb[2], mb[3]);
 994
 995                         if (mb[1] == 0xffff)
 996                                 goto global_port_update;
 997
 998                         if (mb[1] == NPH_SNS_LID(ha)) {
 999                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1000                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1001                                 break;
1002                         }
1003
1004                         /* use handle_cnt for loop id/nport handle */
1005                         if (IS_FWI2_CAPABLE(ha))
1006                                 handle_cnt = NPH_SNS;
1007                         else
1008                                 handle_cnt = SIMPLE_NAME_SERVER;
1009                         if (mb[1] == handle_cnt) {
1010                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1011                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1012                                 break;
1013                         }
1014
1015                         /* Port logout */
1016                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
1017                         if (!fcport)
1018                                 break;
1019                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1020                                 break;
1021                         ql_dbg(ql_dbg_async, vha, 0x508a,
1022                             "Marking port lost loopid=%04x portid=%06x.\n",
1023                             fcport->loop_id, fcport->d_id.b24);
1024                         if (qla_ini_mode_enabled(vha)) {
1025                                 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1026                                 fcport->logout_on_delete = 0;
1027                                 qlt_schedule_sess_for_deletion(fcport);
1028                         }
1029                         break;
1030
1031 global_port_update:
1032                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1033                                 atomic_set(&vha->loop_state, LOOP_DOWN);
1034                                 atomic_set(&vha->loop_down_timer,
1035                                     LOOP_DOWN_TIME);
1036                                 vha->device_flags |= DFLG_NO_CABLE;
1037                                 qla2x00_mark_all_devices_lost(vha, 1);
1038                         }
1039
1040                         if (vha->vp_idx) {
1041                                 atomic_set(&vha->vp_state, VP_FAILED);
1042                                 fc_vport_set_state(vha->fc_vport,
1043                                     FC_VPORT_FAILED);
1044                                 qla2x00_mark_all_devices_lost(vha, 1);
1045                         }
1046
1047                         vha->flags.management_server_logged_in = 0;
1048                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1049                         break;
1050                 }
1051
1052                 /*
1053                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1054                  * event etc. earlier indicating loop is down) then process
1055                  * it.  Otherwise ignore it and Wait for RSCN to come in.
1056                  */
1057                 atomic_set(&vha->loop_down_timer, 0);
1058                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
1059                         !ha->flags.n2n_ae  &&
1060                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
1061                         ql_dbg(ql_dbg_async, vha, 0x5011,
1062                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
1063                             mb[1], mb[2], mb[3]);
1064                         break;
1065                 }
1066
1067                 ql_dbg(ql_dbg_async, vha, 0x5012,
1068                     "Port database changed %04x %04x %04x.\n",
1069                     mb[1], mb[2], mb[3]);
1070
1071                 /*
1072                  * Mark all devices as missing so we will login again.
1073                  */
1074                 atomic_set(&vha->loop_state, LOOP_UP);
1075                 vha->scan.scan_retry = 0;
1076
1077                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1078                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1079                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
1080                 break;
1081
1082         case MBA_RSCN_UPDATE:           /* State Change Registration */
1083                 /* Check if the Vport has issued a SCR */
1084                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1085                         break;
1086                 /* Only handle SCNs for our Vport index. */
1087                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1088                         break;
1089
1090                 ql_dbg(ql_dbg_async, vha, 0x5013,
1091                     "RSCN database changed -- %04x %04x %04x.\n",
1092                     mb[1], mb[2], mb[3]);
1093
1094                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1095                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1096                                 | vha->d_id.b.al_pa;
1097                 if (rscn_entry == host_pid) {
1098                         ql_dbg(ql_dbg_async, vha, 0x5014,
1099                             "Ignoring RSCN update to local host "
1100                             "port ID (%06x).\n", host_pid);
1101                         break;
1102                 }
1103
1104                 /* Ignore reserved bits from RSCN-payload. */
1105                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1106
1107                 /* Skip RSCNs for virtual ports on the same physical port */
1108                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1109                         break;
1110
1111                 atomic_set(&vha->loop_down_timer, 0);
1112                 vha->flags.management_server_logged_in = 0;
1113                 {
1114                         struct event_arg ea;
1115
1116                         memset(&ea, 0, sizeof(ea));
1117                         ea.id.b24 = rscn_entry;
1118                         ea.id.b.rsvd_1 = rscn_entry >> 24;
1119                         qla2x00_handle_rscn(vha, &ea);
1120                         qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1121                 }
1122                 break;
1123         /* case MBA_RIO_RESPONSE: */
1124         case MBA_ZIO_RESPONSE:
1125                 ql_dbg(ql_dbg_async, vha, 0x5015,
1126                     "[R|Z]IO update completion.\n");
1127
1128                 if (IS_FWI2_CAPABLE(ha))
1129                         qla24xx_process_response_queue(vha, rsp);
1130                 else
1131                         qla2x00_process_response_queue(rsp);
1132                 break;
1133
1134         case MBA_DISCARD_RND_FRAME:
1135                 ql_dbg(ql_dbg_async, vha, 0x5016,
1136                     "Discard RND Frame -- %04x %04x %04x.\n",
1137                     mb[1], mb[2], mb[3]);
1138                 break;
1139
1140         case MBA_TRACE_NOTIFICATION:
1141                 ql_dbg(ql_dbg_async, vha, 0x5017,
1142                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1143                 break;
1144
1145         case MBA_ISP84XX_ALERT:
1146                 ql_dbg(ql_dbg_async, vha, 0x5018,
1147                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1148                     mb[1], mb[2], mb[3]);
1149
1150                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1151                 switch (mb[1]) {
1152                 case A84_PANIC_RECOVERY:
1153                         ql_log(ql_log_info, vha, 0x5019,
1154                             "Alert 84XX: panic recovery %04x %04x.\n",
1155                             mb[2], mb[3]);
1156                         break;
1157                 case A84_OP_LOGIN_COMPLETE:
1158                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1159                         ql_log(ql_log_info, vha, 0x501a,
1160                             "Alert 84XX: firmware version %x.\n",
1161                             ha->cs84xx->op_fw_version);
1162                         break;
1163                 case A84_DIAG_LOGIN_COMPLETE:
1164                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1165                         ql_log(ql_log_info, vha, 0x501b,
1166                             "Alert 84XX: diagnostic firmware version %x.\n",
1167                             ha->cs84xx->diag_fw_version);
1168                         break;
1169                 case A84_GOLD_LOGIN_COMPLETE:
1170                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1171                         ha->cs84xx->fw_update = 1;
1172                         ql_log(ql_log_info, vha, 0x501c,
1173                             "Alert 84XX: gold firmware version %x.\n",
1174                             ha->cs84xx->gold_fw_version);
1175                         break;
1176                 default:
1177                         ql_log(ql_log_warn, vha, 0x501d,
1178                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1179                             mb[1], mb[2], mb[3]);
1180                 }
1181                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1182                 break;
1183         case MBA_DCBX_START:
1184                 ql_dbg(ql_dbg_async, vha, 0x501e,
1185                     "DCBX Started -- %04x %04x %04x.\n",
1186                     mb[1], mb[2], mb[3]);
1187                 break;
1188         case MBA_DCBX_PARAM_UPDATE:
1189                 ql_dbg(ql_dbg_async, vha, 0x501f,
1190                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1191                     mb[1], mb[2], mb[3]);
1192                 break;
1193         case MBA_FCF_CONF_ERR:
1194                 ql_dbg(ql_dbg_async, vha, 0x5020,
1195                     "FCF Configuration Error -- %04x %04x %04x.\n",
1196                     mb[1], mb[2], mb[3]);
1197                 break;
1198         case MBA_IDC_NOTIFY:
1199                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1200                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1201                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1202                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1203                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1204                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1205                                 /*
1206                                  * Extend loop down timer since port is active.
1207                                  */
1208                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1209                                         atomic_set(&vha->loop_down_timer,
1210                                             LOOP_DOWN_TIME);
1211                                 qla2xxx_wake_dpc(vha);
1212                         }
1213                 }
1214                 /* fall through */
1215         case MBA_IDC_COMPLETE:
1216                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1217                         complete(&ha->lb_portup_comp);
1218                 /* Fallthru */
1219         case MBA_IDC_TIME_EXT:
1220                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1221                     IS_QLA8044(ha))
1222                         qla81xx_idc_event(vha, mb[0], mb[1]);
1223                 break;
1224
1225         case MBA_IDC_AEN:
1226                 if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
1227                         ha->flags.fw_init_done = 0;
1228                         ql_log(ql_log_warn, vha, 0xffff,
1229                             "MPI Heartbeat stop. Chip reset needed. MB0[%xh] MB1[%xh] MB2[%xh] MB3[%xh]\n",
1230                             mb[0], mb[1], mb[2], mb[3]);
1231
1232                         if ((mb[1] & BIT_8) ||
1233                             (mb[2] & BIT_8)) {
1234                                 ql_log(ql_log_warn, vha, 0xd013,
1235                                     "MPI Heartbeat stop. FW dump needed\n");
1236                                 ha->fw_dump_mpi = 1;
1237                                 ha->isp_ops->fw_dump(vha, 1);
1238                         }
1239                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1240                         qla2xxx_wake_dpc(vha);
1241                 } else if (IS_QLA83XX(ha)) {
1242                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1243                         mb[5] = RD_REG_WORD(&reg24->mailbox5);
1244                         mb[6] = RD_REG_WORD(&reg24->mailbox6);
1245                         mb[7] = RD_REG_WORD(&reg24->mailbox7);
1246                         qla83xx_handle_8200_aen(vha, mb);
1247                 } else {
1248                         ql_dbg(ql_dbg_async, vha, 0x5052,
1249                             "skip Heartbeat processing mb0-3=[0x%04x] [0x%04x] [0x%04x] [0x%04x]\n",
1250                             mb[0], mb[1], mb[2], mb[3]);
1251                 }
1252                 break;
1253
1254         case MBA_DPORT_DIAGNOSTICS:
1255                 ql_dbg(ql_dbg_async, vha, 0x5052,
1256                     "D-Port Diagnostics: %04x result=%s\n",
1257                     mb[0],
1258                     mb[1] == 0 ? "start" :
1259                     mb[1] == 1 ? "done (pass)" :
1260                     mb[1] == 2 ? "done (error)" : "other");
1261                 break;
1262
1263         case MBA_TEMPERATURE_ALERT:
1264                 ql_dbg(ql_dbg_async, vha, 0x505e,
1265                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1266                 if (mb[1] == 0x12)
1267                         schedule_work(&ha->board_disable);
1268                 break;
1269
1270         case MBA_TRANS_INSERT:
1271                 ql_dbg(ql_dbg_async, vha, 0x5091,
1272                     "Transceiver Insertion: %04x\n", mb[1]);
1273                 break;
1274
1275         default:
1276                 ql_dbg(ql_dbg_async, vha, 0x5057,
1277                     "Unknown AEN:%04x %04x %04x %04x\n",
1278                     mb[0], mb[1], mb[2], mb[3]);
1279         }
1280
1281         qlt_async_event(mb[0], vha, mb);
1282
1283         if (!vha->vp_idx && ha->num_vhosts)
1284                 qla2x00_alert_all_vps(rsp, mb);
1285 }
1286
1287 /**
1288  * qla2x00_process_completed_request() - Process a Fast Post response.
1289  * @vha: SCSI driver HA context
1290  * @req: request queue
1291  * @index: SRB index
1292  */
1293 void
1294 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1295                                   struct req_que *req, uint32_t index)
1296 {
1297         srb_t *sp;
1298         struct qla_hw_data *ha = vha->hw;
1299
1300         /* Validate handle. */
1301         if (index >= req->num_outstanding_cmds) {
1302                 ql_log(ql_log_warn, vha, 0x3014,
1303                     "Invalid SCSI command index (%x).\n", index);
1304
1305                 if (IS_P3P_TYPE(ha))
1306                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1307                 else
1308                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1309                 return;
1310         }
1311
1312         sp = req->outstanding_cmds[index];
1313         if (sp) {
1314                 /* Free outstanding command slot. */
1315                 req->outstanding_cmds[index] = NULL;
1316
1317                 /* Save ISP completion status */
1318                 sp->done(sp, DID_OK << 16);
1319         } else {
1320                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1321
1322                 if (IS_P3P_TYPE(ha))
1323                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1324                 else
1325                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1326         }
1327 }
1328
1329 srb_t *
1330 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1331     struct req_que *req, void *iocb)
1332 {
1333         struct qla_hw_data *ha = vha->hw;
1334         sts_entry_t *pkt = iocb;
1335         srb_t *sp = NULL;
1336         uint16_t index;
1337
1338         index = LSW(pkt->handle);
1339         if (index >= req->num_outstanding_cmds) {
1340                 ql_log(ql_log_warn, vha, 0x5031,
1341                            "Invalid command index (%x) type %8ph.\n",
1342                            index, iocb);
1343                 if (IS_P3P_TYPE(ha))
1344                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1345                 else
1346                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1347                 goto done;
1348         }
1349         sp = req->outstanding_cmds[index];
1350         if (!sp) {
1351                 ql_log(ql_log_warn, vha, 0x5032,
1352                     "Invalid completion handle (%x) -- timed-out.\n", index);
1353                 return sp;
1354         }
1355         if (sp->handle != index) {
1356                 ql_log(ql_log_warn, vha, 0x5033,
1357                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1358                 return NULL;
1359         }
1360
1361         req->outstanding_cmds[index] = NULL;
1362
1363 done:
1364         return sp;
1365 }
1366
1367 static void
1368 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1369     struct mbx_entry *mbx)
1370 {
1371         const char func[] = "MBX-IOCB";
1372         const char *type;
1373         fc_port_t *fcport;
1374         srb_t *sp;
1375         struct srb_iocb *lio;
1376         uint16_t *data;
1377         uint16_t status;
1378
1379         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1380         if (!sp)
1381                 return;
1382
1383         lio = &sp->u.iocb_cmd;
1384         type = sp->name;
1385         fcport = sp->fcport;
1386         data = lio->u.logio.data;
1387
1388         data[0] = MBS_COMMAND_ERROR;
1389         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1390             QLA_LOGIO_LOGIN_RETRIED : 0;
1391         if (mbx->entry_status) {
1392                 ql_dbg(ql_dbg_async, vha, 0x5043,
1393                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1394                     "entry-status=%x status=%x state-flag=%x "
1395                     "status-flags=%x.\n", type, sp->handle,
1396                     fcport->d_id.b.domain, fcport->d_id.b.area,
1397                     fcport->d_id.b.al_pa, mbx->entry_status,
1398                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1399                     le16_to_cpu(mbx->status_flags));
1400
1401                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1402                     mbx, sizeof(*mbx));
1403
1404                 goto logio_done;
1405         }
1406
1407         status = le16_to_cpu(mbx->status);
1408         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1409             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1410                 status = 0;
1411         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1412                 ql_dbg(ql_dbg_async, vha, 0x5045,
1413                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1414                     type, sp->handle, fcport->d_id.b.domain,
1415                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1416                     le16_to_cpu(mbx->mb1));
1417
1418                 data[0] = MBS_COMMAND_COMPLETE;
1419                 if (sp->type == SRB_LOGIN_CMD) {
1420                         fcport->port_type = FCT_TARGET;
1421                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1422                                 fcport->port_type = FCT_INITIATOR;
1423                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1424                                 fcport->flags |= FCF_FCP2_DEVICE;
1425                 }
1426                 goto logio_done;
1427         }
1428
1429         data[0] = le16_to_cpu(mbx->mb0);
1430         switch (data[0]) {
1431         case MBS_PORT_ID_USED:
1432                 data[1] = le16_to_cpu(mbx->mb1);
1433                 break;
1434         case MBS_LOOP_ID_USED:
1435                 break;
1436         default:
1437                 data[0] = MBS_COMMAND_ERROR;
1438                 break;
1439         }
1440
1441         ql_log(ql_log_warn, vha, 0x5046,
1442             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1443             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1444             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1445             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1446             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1447             le16_to_cpu(mbx->mb7));
1448
1449 logio_done:
1450         sp->done(sp, 0);
1451 }
1452
1453 static void
1454 qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1455     struct mbx_24xx_entry *pkt)
1456 {
1457         const char func[] = "MBX-IOCB2";
1458         srb_t *sp;
1459         struct srb_iocb *si;
1460         u16 sz, i;
1461         int res;
1462
1463         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1464         if (!sp)
1465                 return;
1466
1467         si = &sp->u.iocb_cmd;
1468         sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));
1469
1470         for (i = 0; i < sz; i++)
1471                 si->u.mbx.in_mb[i] = le16_to_cpu(pkt->mb[i]);
1472
1473         res = (si->u.mbx.in_mb[0] & MBS_MASK);
1474
1475         sp->done(sp, res);
1476 }
1477
1478 static void
1479 qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1480     struct nack_to_isp *pkt)
1481 {
1482         const char func[] = "nack";
1483         srb_t *sp;
1484         int res = 0;
1485
1486         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1487         if (!sp)
1488                 return;
1489
1490         if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
1491                 res = QLA_FUNCTION_FAILED;
1492
1493         sp->done(sp, res);
1494 }
1495
1496 static void
1497 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1498     sts_entry_t *pkt, int iocb_type)
1499 {
1500         const char func[] = "CT_IOCB";
1501         const char *type;
1502         srb_t *sp;
1503         struct bsg_job *bsg_job;
1504         struct fc_bsg_reply *bsg_reply;
1505         uint16_t comp_status;
1506         int res = 0;
1507
1508         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1509         if (!sp)
1510                 return;
1511
1512         switch (sp->type) {
1513         case SRB_CT_CMD:
1514             bsg_job = sp->u.bsg_job;
1515             bsg_reply = bsg_job->reply;
1516
1517             type = "ct pass-through";
1518
1519             comp_status = le16_to_cpu(pkt->comp_status);
1520
1521             /*
1522              * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1523              * fc payload  to the caller
1524              */
1525             bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1526             bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1527
1528             if (comp_status != CS_COMPLETE) {
1529                     if (comp_status == CS_DATA_UNDERRUN) {
1530                             res = DID_OK << 16;
1531                             bsg_reply->reply_payload_rcv_len =
1532                                 le16_to_cpu(pkt->rsp_info_len);
1533
1534                             ql_log(ql_log_warn, vha, 0x5048,
1535                                 "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
1536                                 type, comp_status,
1537                                 bsg_reply->reply_payload_rcv_len);
1538                     } else {
1539                             ql_log(ql_log_warn, vha, 0x5049,
1540                                 "CT pass-through-%s error comp_status=0x%x.\n",
1541                                 type, comp_status);
1542                             res = DID_ERROR << 16;
1543                             bsg_reply->reply_payload_rcv_len = 0;
1544                     }
1545                     ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1546                         pkt, sizeof(*pkt));
1547             } else {
1548                     res = DID_OK << 16;
1549                     bsg_reply->reply_payload_rcv_len =
1550                         bsg_job->reply_payload.payload_len;
1551                     bsg_job->reply_len = 0;
1552             }
1553             break;
1554         case SRB_CT_PTHRU_CMD:
1555             /*
1556              * borrowing sts_entry_24xx.comp_status.
1557              * same location as ct_entry_24xx.comp_status
1558              */
1559              res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1560                  (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1561                  sp->name);
1562              break;
1563         }
1564
1565         sp->done(sp, res);
1566 }
1567
1568 static void
1569 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1570     struct sts_entry_24xx *pkt, int iocb_type)
1571 {
1572         const char func[] = "ELS_CT_IOCB";
1573         const char *type;
1574         srb_t *sp;
1575         struct bsg_job *bsg_job;
1576         struct fc_bsg_reply *bsg_reply;
1577         uint16_t comp_status;
1578         uint32_t fw_status[3];
1579         int res;
1580         struct srb_iocb *els;
1581
1582         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1583         if (!sp)
1584                 return;
1585
1586         type = NULL;
1587         switch (sp->type) {
1588         case SRB_ELS_CMD_RPT:
1589         case SRB_ELS_CMD_HST:
1590                 type = "els";
1591                 break;
1592         case SRB_CT_CMD:
1593                 type = "ct pass-through";
1594                 break;
1595         case SRB_ELS_DCMD:
1596                 type = "Driver ELS logo";
1597                 if (iocb_type != ELS_IOCB_TYPE) {
1598                         ql_dbg(ql_dbg_user, vha, 0x5047,
1599                             "Completing %s: (%p) type=%d.\n",
1600                             type, sp, sp->type);
1601                         sp->done(sp, 0);
1602                         return;
1603                 }
1604                 break;
1605         case SRB_CT_PTHRU_CMD:
1606                 /* borrowing sts_entry_24xx.comp_status.
1607                    same location as ct_entry_24xx.comp_status
1608                  */
1609                 res = qla2x00_chk_ms_status(sp->vha, (ms_iocb_entry_t *)pkt,
1610                         (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1611                         sp->name);
1612                 sp->done(sp, res);
1613                 return;
1614         default:
1615                 ql_dbg(ql_dbg_user, vha, 0x503e,
1616                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1617                 return;
1618         }
1619
1620         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1621         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_1);
1622         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_2);
1623
1624         if (iocb_type == ELS_IOCB_TYPE) {
1625                 els = &sp->u.iocb_cmd;
1626                 els->u.els_plogi.fw_status[0] = fw_status[0];
1627                 els->u.els_plogi.fw_status[1] = fw_status[1];
1628                 els->u.els_plogi.fw_status[2] = fw_status[2];
1629                 els->u.els_plogi.comp_status = fw_status[0];
1630                 if (comp_status == CS_COMPLETE) {
1631                         res =  DID_OK << 16;
1632                 } else {
1633                         if (comp_status == CS_DATA_UNDERRUN) {
1634                                 res =  DID_OK << 16;
1635                                 els->u.els_plogi.len =
1636                                 le16_to_cpu(((struct els_sts_entry_24xx *)
1637                                         pkt)->total_byte_count);
1638                         } else {
1639                                 els->u.els_plogi.len = 0;
1640                                 res = DID_ERROR << 16;
1641                         }
1642                 }
1643                 ql_dbg(ql_dbg_user, vha, 0x503f,
1644                     "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",
1645                     type, sp->handle, comp_status, fw_status[1], fw_status[2],
1646                     le16_to_cpu(((struct els_sts_entry_24xx *)
1647                         pkt)->total_byte_count));
1648                 goto els_ct_done;
1649         }
1650
1651         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1652          * fc payload  to the caller
1653          */
1654         bsg_job = sp->u.bsg_job;
1655         bsg_reply = bsg_job->reply;
1656         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1657         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1658
1659         if (comp_status != CS_COMPLETE) {
1660                 if (comp_status == CS_DATA_UNDERRUN) {
1661                         res = DID_OK << 16;
1662                         bsg_reply->reply_payload_rcv_len =
1663                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1664
1665                         ql_dbg(ql_dbg_user, vha, 0x503f,
1666                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1667                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1668                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1669                             le16_to_cpu(((struct els_sts_entry_24xx *)
1670                                 pkt)->total_byte_count));
1671                 } else {
1672                         ql_dbg(ql_dbg_user, vha, 0x5040,
1673                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1674                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1675                             type, sp->handle, comp_status,
1676                             le16_to_cpu(((struct els_sts_entry_24xx *)
1677                                 pkt)->error_subcode_1),
1678                             le16_to_cpu(((struct els_sts_entry_24xx *)
1679                                     pkt)->error_subcode_2));
1680                         res = DID_ERROR << 16;
1681                         bsg_reply->reply_payload_rcv_len = 0;
1682                 }
1683                 memcpy(bsg_job->reply + sizeof(struct fc_bsg_reply),
1684                        fw_status, sizeof(fw_status));
1685                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1686                     pkt, sizeof(*pkt));
1687         }
1688         else {
1689                 res =  DID_OK << 16;
1690                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1691                 bsg_job->reply_len = 0;
1692         }
1693 els_ct_done:
1694
1695         sp->done(sp, res);
1696 }
1697
1698 static void
1699 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1700     struct logio_entry_24xx *logio)
1701 {
1702         const char func[] = "LOGIO-IOCB";
1703         const char *type;
1704         fc_port_t *fcport;
1705         srb_t *sp;
1706         struct srb_iocb *lio;
1707         uint16_t *data;
1708         uint32_t iop[2];
1709
1710         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1711         if (!sp)
1712                 return;
1713
1714         lio = &sp->u.iocb_cmd;
1715         type = sp->name;
1716         fcport = sp->fcport;
1717         data = lio->u.logio.data;
1718
1719         data[0] = MBS_COMMAND_ERROR;
1720         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1721                 QLA_LOGIO_LOGIN_RETRIED : 0;
1722         if (logio->entry_status) {
1723                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1724                     "Async-%s error entry - %8phC hdl=%x"
1725                     "portid=%02x%02x%02x entry-status=%x.\n",
1726                     type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
1727                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1728                     logio->entry_status);
1729                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1730                     logio, sizeof(*logio));
1731
1732                 goto logio_done;
1733         }
1734
1735         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1736                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1737                     "Async-%s complete - %8phC hdl=%x portid=%02x%02x%02x "
1738                     "iop0=%x.\n", type, fcport->port_name, sp->handle,
1739                     fcport->d_id.b.domain,
1740                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1741                     le32_to_cpu(logio->io_parameter[0]));
1742
1743                 vha->hw->exch_starvation = 0;
1744                 data[0] = MBS_COMMAND_COMPLETE;
1745
1746                 if (sp->type == SRB_PRLI_CMD) {
1747                         lio->u.logio.iop[0] =
1748                             le32_to_cpu(logio->io_parameter[0]);
1749                         lio->u.logio.iop[1] =
1750                             le32_to_cpu(logio->io_parameter[1]);
1751                         goto logio_done;
1752                 }
1753
1754                 if (sp->type != SRB_LOGIN_CMD)
1755                         goto logio_done;
1756
1757                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1758                 if (iop[0] & BIT_4) {
1759                         fcport->port_type = FCT_TARGET;
1760                         if (iop[0] & BIT_8)
1761                                 fcport->flags |= FCF_FCP2_DEVICE;
1762                 } else if (iop[0] & BIT_5)
1763                         fcport->port_type = FCT_INITIATOR;
1764
1765                 if (iop[0] & BIT_7)
1766                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1767
1768                 if (logio->io_parameter[7] || logio->io_parameter[8])
1769                         fcport->supported_classes |= FC_COS_CLASS2;
1770                 if (logio->io_parameter[9] || logio->io_parameter[10])
1771                         fcport->supported_classes |= FC_COS_CLASS3;
1772
1773                 goto logio_done;
1774         }
1775
1776         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1777         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1778         lio->u.logio.iop[0] = iop[0];
1779         lio->u.logio.iop[1] = iop[1];
1780         switch (iop[0]) {
1781         case LSC_SCODE_PORTID_USED:
1782                 data[0] = MBS_PORT_ID_USED;
1783                 data[1] = LSW(iop[1]);
1784                 break;
1785         case LSC_SCODE_NPORT_USED:
1786                 data[0] = MBS_LOOP_ID_USED;
1787                 break;
1788         case LSC_SCODE_CMD_FAILED:
1789                 if (iop[1] == 0x0606) {
1790                         /*
1791                          * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
1792                          * Target side acked.
1793                          */
1794                         data[0] = MBS_COMMAND_COMPLETE;
1795                         goto logio_done;
1796                 }
1797                 data[0] = MBS_COMMAND_ERROR;
1798                 break;
1799         case LSC_SCODE_NOXCB:
1800                 vha->hw->exch_starvation++;
1801                 if (vha->hw->exch_starvation > 5) {
1802                         ql_log(ql_log_warn, vha, 0xd046,
1803                             "Exchange starvation. Resetting RISC\n");
1804
1805                         vha->hw->exch_starvation = 0;
1806
1807                         if (IS_P3P_TYPE(vha->hw))
1808                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1809                         else
1810                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1811                         qla2xxx_wake_dpc(vha);
1812                 }
1813                 /* fall through */
1814         default:
1815                 data[0] = MBS_COMMAND_ERROR;
1816                 break;
1817         }
1818
1819         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1820             "Async-%s failed - %8phC hdl=%x portid=%02x%02x%02x comp=%x "
1821             "iop0=%x iop1=%x.\n", type, fcport->port_name,
1822                 sp->handle, fcport->d_id.b.domain,
1823             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1824             le16_to_cpu(logio->comp_status),
1825             le32_to_cpu(logio->io_parameter[0]),
1826             le32_to_cpu(logio->io_parameter[1]));
1827
1828 logio_done:
1829         sp->done(sp, 0);
1830 }
1831
1832 static void
1833 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1834 {
1835         const char func[] = "TMF-IOCB";
1836         const char *type;
1837         fc_port_t *fcport;
1838         srb_t *sp;
1839         struct srb_iocb *iocb;
1840         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1841
1842         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1843         if (!sp)
1844                 return;
1845
1846         iocb = &sp->u.iocb_cmd;
1847         type = sp->name;
1848         fcport = sp->fcport;
1849         iocb->u.tmf.data = QLA_SUCCESS;
1850
1851         if (sts->entry_status) {
1852                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1853                     "Async-%s error - hdl=%x entry-status(%x).\n",
1854                     type, sp->handle, sts->entry_status);
1855                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1856         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1857                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1858                     "Async-%s error - hdl=%x completion status(%x).\n",
1859                     type, sp->handle, sts->comp_status);
1860                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1861         } else if ((le16_to_cpu(sts->scsi_status) &
1862             SS_RESPONSE_INFO_LEN_VALID)) {
1863                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1864                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1865                             "Async-%s error - hdl=%x not enough response(%d).\n",
1866                             type, sp->handle, sts->rsp_data_len);
1867                 } else if (sts->data[3]) {
1868                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1869                             "Async-%s error - hdl=%x response(%x).\n",
1870                             type, sp->handle, sts->data[3]);
1871                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1872                 }
1873         }
1874
1875         if (iocb->u.tmf.data != QLA_SUCCESS)
1876                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, sp->vha, 0x5055,
1877                     sts, sizeof(*sts));
1878
1879         sp->done(sp, 0);
1880 }
1881
1882 static void qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1883     void *tsk, srb_t *sp)
1884 {
1885         fc_port_t *fcport;
1886         struct srb_iocb *iocb;
1887         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1888         uint16_t        state_flags;
1889         struct nvmefc_fcp_req *fd;
1890         uint16_t        ret = QLA_SUCCESS;
1891         uint16_t        comp_status = le16_to_cpu(sts->comp_status);
1892
1893         iocb = &sp->u.iocb_cmd;
1894         fcport = sp->fcport;
1895         iocb->u.nvme.comp_status = comp_status;
1896         state_flags  = le16_to_cpu(sts->state_flags);
1897         fd = iocb->u.nvme.desc;
1898
1899         if (unlikely(iocb->u.nvme.aen_op))
1900                 atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
1901
1902         /*
1903          * State flags: Bit 6 and 0.
1904          * If 0 is set, we don't care about 6.
1905          * both cases resp was dma'd to host buffer
1906          * if both are 0, that is good path case.
1907          * if six is set and 0 is clear, we need to
1908          * copy resp data from status iocb to resp buffer.
1909          */
1910         if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
1911                 iocb->u.nvme.rsp_pyld_len = 0;
1912         } else if ((state_flags & SF_FCP_RSP_DMA)) {
1913                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1914         } else if (state_flags & SF_NVME_ERSP) {
1915                 uint32_t *inbuf, *outbuf;
1916                 uint16_t iter;
1917
1918                 inbuf = (uint32_t *)&sts->nvme_ersp_data;
1919                 outbuf = (uint32_t *)fd->rspaddr;
1920                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1921                 iter = iocb->u.nvme.rsp_pyld_len >> 2;
1922                 for (; iter; iter--)
1923                         *outbuf++ = swab32(*inbuf++);
1924         } else { /* unhandled case */
1925             ql_log(ql_log_warn, fcport->vha, 0x503a,
1926                 "NVME-%s error. Unhandled state_flags of %x\n",
1927                 sp->name, state_flags);
1928         }
1929
1930         fd->transferred_length = fd->payload_length -
1931             le32_to_cpu(sts->residual_len);
1932
1933         if (unlikely(comp_status != CS_COMPLETE))
1934                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1935                    "NVME-%s ERR Handling - hdl=%x status(%x) tr_len:%x resid=%x  ox_id=%x\n",
1936                    sp->name, sp->handle, comp_status,
1937                    fd->transferred_length, le32_to_cpu(sts->residual_len),
1938                    sts->ox_id);
1939
1940         /*
1941          * If transport error then Failure (HBA rejects request)
1942          * otherwise transport will handle.
1943          */
1944         switch (comp_status) {
1945         case CS_COMPLETE:
1946                 break;
1947
1948         case CS_RESET:
1949         case CS_PORT_UNAVAILABLE:
1950         case CS_PORT_LOGGED_OUT:
1951                 fcport->nvme_flag |= NVME_FLAG_RESETTING;
1952                 /* fall through */
1953         case CS_ABORTED:
1954         case CS_PORT_BUSY:
1955                 fd->transferred_length = 0;
1956                 iocb->u.nvme.rsp_pyld_len = 0;
1957                 ret = QLA_ABORTED;
1958                 break;
1959         case CS_DATA_UNDERRUN:
1960                 break;
1961         default:
1962                 ret = QLA_FUNCTION_FAILED;
1963                 break;
1964         }
1965         sp->done(sp, ret);
1966 }
1967
1968 static void qla_ctrlvp_completed(scsi_qla_host_t *vha, struct req_que *req,
1969     struct vp_ctrl_entry_24xx *vce)
1970 {
1971         const char func[] = "CTRLVP-IOCB";
1972         srb_t *sp;
1973         int rval = QLA_SUCCESS;
1974
1975         sp = qla2x00_get_sp_from_handle(vha, func, req, vce);
1976         if (!sp)
1977                 return;
1978
1979         if (vce->entry_status != 0) {
1980                 ql_dbg(ql_dbg_vport, vha, 0x10c4,
1981                     "%s: Failed to complete IOCB -- error status (%x)\n",
1982                     sp->name, vce->entry_status);
1983                 rval = QLA_FUNCTION_FAILED;
1984         } else if (vce->comp_status != cpu_to_le16(CS_COMPLETE)) {
1985                 ql_dbg(ql_dbg_vport, vha, 0x10c5,
1986                     "%s: Failed to complete IOCB -- completion status (%x) vpidx %x\n",
1987                     sp->name, le16_to_cpu(vce->comp_status),
1988                     le16_to_cpu(vce->vp_idx_failed));
1989                 rval = QLA_FUNCTION_FAILED;
1990         } else {
1991                 ql_dbg(ql_dbg_vport, vha, 0x10c6,
1992                     "Done %s.\n", __func__);
1993         }
1994
1995         sp->rc = rval;
1996         sp->done(sp, rval);
1997 }
1998
1999 /* Process a single response queue entry. */
2000 static void qla2x00_process_response_entry(struct scsi_qla_host *vha,
2001                                            struct rsp_que *rsp,
2002                                            sts_entry_t *pkt)
2003 {
2004         sts21_entry_t *sts21_entry;
2005         sts22_entry_t *sts22_entry;
2006         uint16_t handle_cnt;
2007         uint16_t cnt;
2008
2009         switch (pkt->entry_type) {
2010         case STATUS_TYPE:
2011                 qla2x00_status_entry(vha, rsp, pkt);
2012                 break;
2013         case STATUS_TYPE_21:
2014                 sts21_entry = (sts21_entry_t *)pkt;
2015                 handle_cnt = sts21_entry->handle_count;
2016                 for (cnt = 0; cnt < handle_cnt; cnt++)
2017                         qla2x00_process_completed_request(vha, rsp->req,
2018                                                 sts21_entry->handle[cnt]);
2019                 break;
2020         case STATUS_TYPE_22:
2021                 sts22_entry = (sts22_entry_t *)pkt;
2022                 handle_cnt = sts22_entry->handle_count;
2023                 for (cnt = 0; cnt < handle_cnt; cnt++)
2024                         qla2x00_process_completed_request(vha, rsp->req,
2025                                                 sts22_entry->handle[cnt]);
2026                 break;
2027         case STATUS_CONT_TYPE:
2028                 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2029                 break;
2030         case MBX_IOCB_TYPE:
2031                 qla2x00_mbx_iocb_entry(vha, rsp->req, (struct mbx_entry *)pkt);
2032                 break;
2033         case CT_IOCB_TYPE:
2034                 qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2035                 break;
2036         default:
2037                 /* Type Not Supported. */
2038                 ql_log(ql_log_warn, vha, 0x504a,
2039                        "Received unknown response pkt type %x entry status=%x.\n",
2040                        pkt->entry_type, pkt->entry_status);
2041                 break;
2042         }
2043 }
2044
2045 /**
2046  * qla2x00_process_response_queue() - Process response queue entries.
2047  * @rsp: response queue
2048  */
2049 void
2050 qla2x00_process_response_queue(struct rsp_que *rsp)
2051 {
2052         struct scsi_qla_host *vha;
2053         struct qla_hw_data *ha = rsp->hw;
2054         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
2055         sts_entry_t     *pkt;
2056
2057         vha = pci_get_drvdata(ha->pdev);
2058
2059         if (!vha->flags.online)
2060                 return;
2061
2062         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2063                 pkt = (sts_entry_t *)rsp->ring_ptr;
2064
2065                 rsp->ring_index++;
2066                 if (rsp->ring_index == rsp->length) {
2067                         rsp->ring_index = 0;
2068                         rsp->ring_ptr = rsp->ring;
2069                 } else {
2070                         rsp->ring_ptr++;
2071                 }
2072
2073                 if (pkt->entry_status != 0) {
2074                         qla2x00_error_entry(vha, rsp, pkt);
2075                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2076                         wmb();
2077                         continue;
2078                 }
2079
2080                 qla2x00_process_response_entry(vha, rsp, pkt);
2081                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2082                 wmb();
2083         }
2084
2085         /* Adjust ring index */
2086         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
2087 }
2088
2089 static inline void
2090 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
2091                      uint32_t sense_len, struct rsp_que *rsp, int res)
2092 {
2093         struct scsi_qla_host *vha = sp->vha;
2094         struct scsi_cmnd *cp = GET_CMD_SP(sp);
2095         uint32_t track_sense_len;
2096
2097         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
2098                 sense_len = SCSI_SENSE_BUFFERSIZE;
2099
2100         SET_CMD_SENSE_LEN(sp, sense_len);
2101         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
2102         track_sense_len = sense_len;
2103
2104         if (sense_len > par_sense_len)
2105                 sense_len = par_sense_len;
2106
2107         memcpy(cp->sense_buffer, sense_data, sense_len);
2108
2109         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
2110         track_sense_len -= sense_len;
2111         SET_CMD_SENSE_LEN(sp, track_sense_len);
2112
2113         if (track_sense_len != 0) {
2114                 rsp->status_srb = sp;
2115                 cp->result = res;
2116         }
2117
2118         if (sense_len) {
2119                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
2120                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
2121                     sp->vha->host_no, cp->device->id, cp->device->lun,
2122                     cp);
2123                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
2124                     cp->sense_buffer, sense_len);
2125         }
2126 }
2127
2128 struct scsi_dif_tuple {
2129         __be16 guard;       /* Checksum */
2130         __be16 app_tag;         /* APPL identifier */
2131         __be32 ref_tag;         /* Target LBA or indirect LBA */
2132 };
2133
2134 /*
2135  * Checks the guard or meta-data for the type of error
2136  * detected by the HBA. In case of errors, we set the
2137  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
2138  * to indicate to the kernel that the HBA detected error.
2139  */
2140 static inline int
2141 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
2142 {
2143         struct scsi_qla_host *vha = sp->vha;
2144         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2145         uint8_t         *ap = &sts24->data[12];
2146         uint8_t         *ep = &sts24->data[20];
2147         uint32_t        e_ref_tag, a_ref_tag;
2148         uint16_t        e_app_tag, a_app_tag;
2149         uint16_t        e_guard, a_guard;
2150
2151         /*
2152          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
2153          * would make guard field appear at offset 2
2154          */
2155         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
2156         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
2157         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
2158         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
2159         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
2160         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
2161
2162         ql_dbg(ql_dbg_io, vha, 0x3023,
2163             "iocb(s) %p Returned STATUS.\n", sts24);
2164
2165         ql_dbg(ql_dbg_io, vha, 0x3024,
2166             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
2167             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
2168             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
2169             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
2170             a_app_tag, e_app_tag, a_guard, e_guard);
2171
2172         /*
2173          * Ignore sector if:
2174          * For type     3: ref & app tag is all 'f's
2175          * For type 0,1,2: app tag is all 'f's
2176          */
2177         if ((a_app_tag == T10_PI_APP_ESCAPE) &&
2178             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
2179              (a_ref_tag == T10_PI_REF_ESCAPE))) {
2180                 uint32_t blocks_done, resid;
2181                 sector_t lba_s = scsi_get_lba(cmd);
2182
2183                 /* 2TB boundary case covered automatically with this */
2184                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
2185
2186                 resid = scsi_bufflen(cmd) - (blocks_done *
2187                     cmd->device->sector_size);
2188
2189                 scsi_set_resid(cmd, resid);
2190                 cmd->result = DID_OK << 16;
2191
2192                 /* Update protection tag */
2193                 if (scsi_prot_sg_count(cmd)) {
2194                         uint32_t i, j = 0, k = 0, num_ent;
2195                         struct scatterlist *sg;
2196                         struct t10_pi_tuple *spt;
2197
2198                         /* Patch the corresponding protection tags */
2199                         scsi_for_each_prot_sg(cmd, sg,
2200                             scsi_prot_sg_count(cmd), i) {
2201                                 num_ent = sg_dma_len(sg) / 8;
2202                                 if (k + num_ent < blocks_done) {
2203                                         k += num_ent;
2204                                         continue;
2205                                 }
2206                                 j = blocks_done - k - 1;
2207                                 k = blocks_done;
2208                                 break;
2209                         }
2210
2211                         if (k != blocks_done) {
2212                                 ql_log(ql_log_warn, vha, 0x302f,
2213                                     "unexpected tag values tag:lba=%x:%llx)\n",
2214                                     e_ref_tag, (unsigned long long)lba_s);
2215                                 return 1;
2216                         }
2217
2218                         spt = page_address(sg_page(sg)) + sg->offset;
2219                         spt += j;
2220
2221                         spt->app_tag = T10_PI_APP_ESCAPE;
2222                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
2223                                 spt->ref_tag = T10_PI_REF_ESCAPE;
2224                 }
2225
2226                 return 0;
2227         }
2228
2229         /* check guard */
2230         if (e_guard != a_guard) {
2231                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2232                     0x10, 0x1);
2233                 set_driver_byte(cmd, DRIVER_SENSE);
2234                 set_host_byte(cmd, DID_ABORT);
2235                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2236                 return 1;
2237         }
2238
2239         /* check ref tag */
2240         if (e_ref_tag != a_ref_tag) {
2241                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2242                     0x10, 0x3);
2243                 set_driver_byte(cmd, DRIVER_SENSE);
2244                 set_host_byte(cmd, DID_ABORT);
2245                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2246                 return 1;
2247         }
2248
2249         /* check appl tag */
2250         if (e_app_tag != a_app_tag) {
2251                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2252                     0x10, 0x2);
2253                 set_driver_byte(cmd, DRIVER_SENSE);
2254                 set_host_byte(cmd, DID_ABORT);
2255                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2256                 return 1;
2257         }
2258
2259         return 1;
2260 }
2261
2262 static void
2263 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
2264                                   struct req_que *req, uint32_t index)
2265 {
2266         struct qla_hw_data *ha = vha->hw;
2267         srb_t *sp;
2268         uint16_t        comp_status;
2269         uint16_t        scsi_status;
2270         uint16_t thread_id;
2271         uint32_t rval = EXT_STATUS_OK;
2272         struct bsg_job *bsg_job = NULL;
2273         struct fc_bsg_request *bsg_request;
2274         struct fc_bsg_reply *bsg_reply;
2275         sts_entry_t *sts = pkt;
2276         struct sts_entry_24xx *sts24 = pkt;
2277
2278         /* Validate handle. */
2279         if (index >= req->num_outstanding_cmds) {
2280                 ql_log(ql_log_warn, vha, 0x70af,
2281                     "Invalid SCSI completion handle 0x%x.\n", index);
2282                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2283                 return;
2284         }
2285
2286         sp = req->outstanding_cmds[index];
2287         if (!sp) {
2288                 ql_log(ql_log_warn, vha, 0x70b0,
2289                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
2290                     req->id, index);
2291
2292                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2293                 return;
2294         }
2295
2296         /* Free outstanding command slot. */
2297         req->outstanding_cmds[index] = NULL;
2298         bsg_job = sp->u.bsg_job;
2299         bsg_request = bsg_job->request;
2300         bsg_reply = bsg_job->reply;
2301
2302         if (IS_FWI2_CAPABLE(ha)) {
2303                 comp_status = le16_to_cpu(sts24->comp_status);
2304                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2305         } else {
2306                 comp_status = le16_to_cpu(sts->comp_status);
2307                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2308         }
2309
2310         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
2311         switch (comp_status) {
2312         case CS_COMPLETE:
2313                 if (scsi_status == 0) {
2314                         bsg_reply->reply_payload_rcv_len =
2315                                         bsg_job->reply_payload.payload_len;
2316                         vha->qla_stats.input_bytes +=
2317                                 bsg_reply->reply_payload_rcv_len;
2318                         vha->qla_stats.input_requests++;
2319                         rval = EXT_STATUS_OK;
2320                 }
2321                 goto done;
2322
2323         case CS_DATA_OVERRUN:
2324                 ql_dbg(ql_dbg_user, vha, 0x70b1,
2325                     "Command completed with data overrun thread_id=%d\n",
2326                     thread_id);
2327                 rval = EXT_STATUS_DATA_OVERRUN;
2328                 break;
2329
2330         case CS_DATA_UNDERRUN:
2331                 ql_dbg(ql_dbg_user, vha, 0x70b2,
2332                     "Command completed with data underrun thread_id=%d\n",
2333                     thread_id);
2334                 rval = EXT_STATUS_DATA_UNDERRUN;
2335                 break;
2336         case CS_BIDIR_RD_OVERRUN:
2337                 ql_dbg(ql_dbg_user, vha, 0x70b3,
2338                     "Command completed with read data overrun thread_id=%d\n",
2339                     thread_id);
2340                 rval = EXT_STATUS_DATA_OVERRUN;
2341                 break;
2342
2343         case CS_BIDIR_RD_WR_OVERRUN:
2344                 ql_dbg(ql_dbg_user, vha, 0x70b4,
2345                     "Command completed with read and write data overrun "
2346                     "thread_id=%d\n", thread_id);
2347                 rval = EXT_STATUS_DATA_OVERRUN;
2348                 break;
2349
2350         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
2351                 ql_dbg(ql_dbg_user, vha, 0x70b5,
2352                     "Command completed with read data over and write data "
2353                     "underrun thread_id=%d\n", thread_id);
2354                 rval = EXT_STATUS_DATA_OVERRUN;
2355                 break;
2356
2357         case CS_BIDIR_RD_UNDERRUN:
2358                 ql_dbg(ql_dbg_user, vha, 0x70b6,
2359                     "Command completed with read data underrun "
2360                     "thread_id=%d\n", thread_id);
2361                 rval = EXT_STATUS_DATA_UNDERRUN;
2362                 break;
2363
2364         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2365                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2366                     "Command completed with read data under and write data "
2367                     "overrun thread_id=%d\n", thread_id);
2368                 rval = EXT_STATUS_DATA_UNDERRUN;
2369                 break;
2370
2371         case CS_BIDIR_RD_WR_UNDERRUN:
2372                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2373                     "Command completed with read and write data underrun "
2374                     "thread_id=%d\n", thread_id);
2375                 rval = EXT_STATUS_DATA_UNDERRUN;
2376                 break;
2377
2378         case CS_BIDIR_DMA:
2379                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2380                     "Command completed with data DMA error thread_id=%d\n",
2381                     thread_id);
2382                 rval = EXT_STATUS_DMA_ERR;
2383                 break;
2384
2385         case CS_TIMEOUT:
2386                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2387                     "Command completed with timeout thread_id=%d\n",
2388                     thread_id);
2389                 rval = EXT_STATUS_TIMEOUT;
2390                 break;
2391         default:
2392                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2393                     "Command completed with completion status=0x%x "
2394                     "thread_id=%d\n", comp_status, thread_id);
2395                 rval = EXT_STATUS_ERR;
2396                 break;
2397         }
2398         bsg_reply->reply_payload_rcv_len = 0;
2399
2400 done:
2401         /* Return the vendor specific reply to API */
2402         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2403         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2404         /* Always return DID_OK, bsg will send the vendor specific response
2405          * in this case only */
2406         sp->done(sp, DID_OK << 16);
2407
2408 }
2409
2410 /**
2411  * qla2x00_status_entry() - Process a Status IOCB entry.
2412  * @vha: SCSI driver HA context
2413  * @rsp: response queue
2414  * @pkt: Entry pointer
2415  */
2416 static void
2417 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2418 {
2419         srb_t           *sp;
2420         fc_port_t       *fcport;
2421         struct scsi_cmnd *cp;
2422         sts_entry_t *sts = pkt;
2423         struct sts_entry_24xx *sts24 = pkt;
2424         uint16_t        comp_status;
2425         uint16_t        scsi_status;
2426         uint16_t        ox_id;
2427         uint8_t         lscsi_status;
2428         int32_t         resid;
2429         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2430             fw_resid_len;
2431         uint8_t         *rsp_info, *sense_data;
2432         struct qla_hw_data *ha = vha->hw;
2433         uint32_t handle;
2434         uint16_t que;
2435         struct req_que *req;
2436         int logit = 1;
2437         int res = 0;
2438         uint16_t state_flags = 0;
2439         uint16_t retry_delay = 0;
2440
2441         if (IS_FWI2_CAPABLE(ha)) {
2442                 comp_status = le16_to_cpu(sts24->comp_status);
2443                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2444                 state_flags = le16_to_cpu(sts24->state_flags);
2445         } else {
2446                 comp_status = le16_to_cpu(sts->comp_status);
2447                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2448         }
2449         handle = (uint32_t) LSW(sts->handle);
2450         que = MSW(sts->handle);
2451         req = ha->req_q_map[que];
2452
2453         /* Check for invalid queue pointer */
2454         if (req == NULL ||
2455             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2456                 ql_dbg(ql_dbg_io, vha, 0x3059,
2457                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2458                     "que=%u.\n", sts->handle, req, que);
2459                 return;
2460         }
2461
2462         /* Validate handle. */
2463         if (handle < req->num_outstanding_cmds) {
2464                 sp = req->outstanding_cmds[handle];
2465                 if (!sp) {
2466                         ql_dbg(ql_dbg_io, vha, 0x3075,
2467                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2468                             __func__, vha->host_no, sts->handle);
2469                         return;
2470                 }
2471         } else {
2472                 ql_dbg(ql_dbg_io, vha, 0x3017,
2473                     "Invalid status handle, out of range (0x%x).\n",
2474                     sts->handle);
2475
2476                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2477                         if (IS_P3P_TYPE(ha))
2478                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2479                         else
2480                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2481                         qla2xxx_wake_dpc(vha);
2482                 }
2483                 return;
2484         }
2485
2486         if (sp->abort)
2487                 sp->aborted = 1;
2488         else
2489                 sp->completed = 1;
2490
2491         if (sp->cmd_type != TYPE_SRB) {
2492                 req->outstanding_cmds[handle] = NULL;
2493                 ql_dbg(ql_dbg_io, vha, 0x3015,
2494                     "Unknown sp->cmd_type %x %p).\n",
2495                     sp->cmd_type, sp);
2496                 return;
2497         }
2498
2499         /* NVME completion. */
2500         if (sp->type == SRB_NVME_CMD) {
2501                 req->outstanding_cmds[handle] = NULL;
2502                 qla24xx_nvme_iocb_entry(vha, req, pkt, sp);
2503                 return;
2504         }
2505
2506         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2507                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2508                 return;
2509         }
2510
2511         /* Task Management completion. */
2512         if (sp->type == SRB_TM_CMD) {
2513                 qla24xx_tm_iocb_entry(vha, req, pkt);
2514                 return;
2515         }
2516
2517         /* Fast path completion. */
2518         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2519                 qla2x00_process_completed_request(vha, req, handle);
2520
2521                 return;
2522         }
2523
2524         req->outstanding_cmds[handle] = NULL;
2525         cp = GET_CMD_SP(sp);
2526         if (cp == NULL) {
2527                 ql_dbg(ql_dbg_io, vha, 0x3018,
2528                     "Command already returned (0x%x/%p).\n",
2529                     sts->handle, sp);
2530
2531                 return;
2532         }
2533
2534         lscsi_status = scsi_status & STATUS_MASK;
2535
2536         fcport = sp->fcport;
2537
2538         ox_id = 0;
2539         sense_len = par_sense_len = rsp_info_len = resid_len =
2540             fw_resid_len = 0;
2541         if (IS_FWI2_CAPABLE(ha)) {
2542                 if (scsi_status & SS_SENSE_LEN_VALID)
2543                         sense_len = le32_to_cpu(sts24->sense_len);
2544                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2545                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2546                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2547                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2548                 if (comp_status == CS_DATA_UNDERRUN)
2549                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2550                 rsp_info = sts24->data;
2551                 sense_data = sts24->data;
2552                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2553                 ox_id = le16_to_cpu(sts24->ox_id);
2554                 par_sense_len = sizeof(sts24->data);
2555                 /* Valid values of the retry delay timer are 0x1-0xffef */
2556                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1) {
2557                         retry_delay = sts24->retry_delay & 0x3fff;
2558                         ql_dbg(ql_dbg_io, sp->vha, 0x3033,
2559                             "%s: scope=%#x retry_delay=%#x\n", __func__,
2560                             sts24->retry_delay >> 14, retry_delay);
2561                 }
2562         } else {
2563                 if (scsi_status & SS_SENSE_LEN_VALID)
2564                         sense_len = le16_to_cpu(sts->req_sense_length);
2565                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2566                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2567                 resid_len = le32_to_cpu(sts->residual_length);
2568                 rsp_info = sts->rsp_info;
2569                 sense_data = sts->req_sense_data;
2570                 par_sense_len = sizeof(sts->req_sense_data);
2571         }
2572
2573         /* Check for any FCP transport errors. */
2574         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2575                 /* Sense data lies beyond any FCP RESPONSE data. */
2576                 if (IS_FWI2_CAPABLE(ha)) {
2577                         sense_data += rsp_info_len;
2578                         par_sense_len -= rsp_info_len;
2579                 }
2580                 if (rsp_info_len > 3 && rsp_info[3]) {
2581                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2582                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2583                             rsp_info_len, rsp_info[3]);
2584
2585                         res = DID_BUS_BUSY << 16;
2586                         goto out;
2587                 }
2588         }
2589
2590         /* Check for overrun. */
2591         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2592             scsi_status & SS_RESIDUAL_OVER)
2593                 comp_status = CS_DATA_OVERRUN;
2594
2595         /*
2596          * Check retry_delay_timer value if we receive a busy or
2597          * queue full.
2598          */
2599         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2600             lscsi_status == SAM_STAT_BUSY)
2601                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2602
2603         /*
2604          * Based on Host and scsi status generate status code for Linux
2605          */
2606         switch (comp_status) {
2607         case CS_COMPLETE:
2608         case CS_QUEUE_FULL:
2609                 if (scsi_status == 0) {
2610                         res = DID_OK << 16;
2611                         break;
2612                 }
2613                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2614                         resid = resid_len;
2615                         scsi_set_resid(cp, resid);
2616
2617                         if (!lscsi_status &&
2618                             ((unsigned)(scsi_bufflen(cp) - resid) <
2619                              cp->underflow)) {
2620                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2621                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2622                                     resid, scsi_bufflen(cp));
2623
2624                                 res = DID_ERROR << 16;
2625                                 break;
2626                         }
2627                 }
2628                 res = DID_OK << 16 | lscsi_status;
2629
2630                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2631                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2632                             "QUEUE FULL detected.\n");
2633                         break;
2634                 }
2635                 logit = 0;
2636                 if (lscsi_status != SS_CHECK_CONDITION)
2637                         break;
2638
2639                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2640                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2641                         break;
2642
2643                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2644                     rsp, res);
2645                 break;
2646
2647         case CS_DATA_UNDERRUN:
2648                 /* Use F/W calculated residual length. */
2649                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2650                 scsi_set_resid(cp, resid);
2651                 if (scsi_status & SS_RESIDUAL_UNDER) {
2652                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2653                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2654                                     "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2655                                     resid, scsi_bufflen(cp));
2656
2657                                 res = DID_ERROR << 16 | lscsi_status;
2658                                 goto check_scsi_status;
2659                         }
2660
2661                         if (!lscsi_status &&
2662                             ((unsigned)(scsi_bufflen(cp) - resid) <
2663                             cp->underflow)) {
2664                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2665                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2666                                     resid, scsi_bufflen(cp));
2667
2668                                 res = DID_ERROR << 16;
2669                                 break;
2670                         }
2671                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2672                             lscsi_status != SAM_STAT_BUSY) {
2673                         /*
2674                          * scsi status of task set and busy are considered to be
2675                          * task not completed.
2676                          */
2677
2678                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2679                             "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2680                             resid, scsi_bufflen(cp));
2681
2682                         res = DID_ERROR << 16 | lscsi_status;
2683                         goto check_scsi_status;
2684                 } else {
2685                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2686                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2687                             scsi_status, lscsi_status);
2688                 }
2689
2690                 res = DID_OK << 16 | lscsi_status;
2691                 logit = 0;
2692
2693 check_scsi_status:
2694                 /*
2695                  * Check to see if SCSI Status is non zero. If so report SCSI
2696                  * Status.
2697                  */
2698                 if (lscsi_status != 0) {
2699                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2700                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2701                                     "QUEUE FULL detected.\n");
2702                                 logit = 1;
2703                                 break;
2704                         }
2705                         if (lscsi_status != SS_CHECK_CONDITION)
2706                                 break;
2707
2708                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2709                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2710                                 break;
2711
2712                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2713                             sense_len, rsp, res);
2714                 }
2715                 break;
2716
2717         case CS_PORT_LOGGED_OUT:
2718         case CS_PORT_CONFIG_CHG:
2719         case CS_PORT_BUSY:
2720         case CS_INCOMPLETE:
2721         case CS_PORT_UNAVAILABLE:
2722         case CS_TIMEOUT:
2723         case CS_RESET:
2724
2725                 /*
2726                  * We are going to have the fc class block the rport
2727                  * while we try to recover so instruct the mid layer
2728                  * to requeue until the class decides how to handle this.
2729                  */
2730                 res = DID_TRANSPORT_DISRUPTED << 16;
2731
2732                 if (comp_status == CS_TIMEOUT) {
2733                         if (IS_FWI2_CAPABLE(ha))
2734                                 break;
2735                         else if ((le16_to_cpu(sts->status_flags) &
2736                             SF_LOGOUT_SENT) == 0)
2737                                 break;
2738                 }
2739
2740                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
2741                         ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
2742                                 "Port to be marked lost on fcport=%02x%02x%02x, current "
2743                                 "port state= %s comp_status %x.\n", fcport->d_id.b.domain,
2744                                 fcport->d_id.b.area, fcport->d_id.b.al_pa,
2745                                 port_state_str[FCS_ONLINE],
2746                                 comp_status);
2747
2748                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2749                         qlt_schedule_sess_for_deletion(fcport);
2750                 }
2751
2752                 break;
2753
2754         case CS_ABORTED:
2755                 res = DID_RESET << 16;
2756                 break;
2757
2758         case CS_DIF_ERROR:
2759                 logit = qla2x00_handle_dif_error(sp, sts24);
2760                 res = cp->result;
2761                 break;
2762
2763         case CS_TRANSPORT:
2764                 res = DID_ERROR << 16;
2765
2766                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2767                         break;
2768
2769                 if (state_flags & BIT_4)
2770                         scmd_printk(KERN_WARNING, cp,
2771                             "Unsupported device '%s' found.\n",
2772                             cp->device->vendor);
2773                 break;
2774
2775         case CS_DMA:
2776                 ql_log(ql_log_info, fcport->vha, 0x3022,
2777                     "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",
2778                     comp_status, scsi_status, res, vha->host_no,
2779                     cp->device->id, cp->device->lun, fcport->d_id.b24,
2780                     ox_id, cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2781                     resid_len, fw_resid_len, sp, cp);
2782                 ql_dump_buffer(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe0ee,
2783                     pkt, sizeof(*sts24));
2784                 res = DID_ERROR << 16;
2785                 break;
2786         default:
2787                 res = DID_ERROR << 16;
2788                 break;
2789         }
2790
2791 out:
2792         if (logit)
2793                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2794                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2795                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2796                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2797                     comp_status, scsi_status, res, vha->host_no,
2798                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2799                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2800                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2801                     resid_len, fw_resid_len, sp, cp);
2802
2803         if (rsp->status_srb == NULL)
2804                 sp->done(sp, res);
2805 }
2806
2807 /**
2808  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2809  * @rsp: response queue
2810  * @pkt: Entry pointer
2811  *
2812  * Extended sense data.
2813  */
2814 static void
2815 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2816 {
2817         uint8_t sense_sz = 0;
2818         struct qla_hw_data *ha = rsp->hw;
2819         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2820         srb_t *sp = rsp->status_srb;
2821         struct scsi_cmnd *cp;
2822         uint32_t sense_len;
2823         uint8_t *sense_ptr;
2824
2825         if (!sp || !GET_CMD_SENSE_LEN(sp))
2826                 return;
2827
2828         sense_len = GET_CMD_SENSE_LEN(sp);
2829         sense_ptr = GET_CMD_SENSE_PTR(sp);
2830
2831         cp = GET_CMD_SP(sp);
2832         if (cp == NULL) {
2833                 ql_log(ql_log_warn, vha, 0x3025,
2834                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2835
2836                 rsp->status_srb = NULL;
2837                 return;
2838         }
2839
2840         if (sense_len > sizeof(pkt->data))
2841                 sense_sz = sizeof(pkt->data);
2842         else
2843                 sense_sz = sense_len;
2844
2845         /* Move sense data. */
2846         if (IS_FWI2_CAPABLE(ha))
2847                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2848         memcpy(sense_ptr, pkt->data, sense_sz);
2849         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2850                 sense_ptr, sense_sz);
2851
2852         sense_len -= sense_sz;
2853         sense_ptr += sense_sz;
2854
2855         SET_CMD_SENSE_PTR(sp, sense_ptr);
2856         SET_CMD_SENSE_LEN(sp, sense_len);
2857
2858         /* Place command on done queue. */
2859         if (sense_len == 0) {
2860                 rsp->status_srb = NULL;
2861                 sp->done(sp, cp->result);
2862         }
2863 }
2864
2865 /**
2866  * qla2x00_error_entry() - Process an error entry.
2867  * @vha: SCSI driver HA context
2868  * @rsp: response queue
2869  * @pkt: Entry pointer
2870  * return : 1=allow further error analysis. 0=no additional error analysis.
2871  */
2872 static int
2873 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2874 {
2875         srb_t *sp;
2876         struct qla_hw_data *ha = vha->hw;
2877         const char func[] = "ERROR-IOCB";
2878         uint16_t que = MSW(pkt->handle);
2879         struct req_que *req = NULL;
2880         int res = DID_ERROR << 16;
2881
2882         ql_dbg(ql_dbg_async, vha, 0x502a,
2883             "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
2884             pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
2885
2886         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2887                 goto fatal;
2888
2889         req = ha->req_q_map[que];
2890
2891         if (pkt->entry_status & RF_BUSY)
2892                 res = DID_BUS_BUSY << 16;
2893
2894         if ((pkt->handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE)
2895                 return 0;
2896
2897         switch (pkt->entry_type) {
2898         case NOTIFY_ACK_TYPE:
2899         case STATUS_TYPE:
2900         case STATUS_CONT_TYPE:
2901         case LOGINOUT_PORT_IOCB_TYPE:
2902         case CT_IOCB_TYPE:
2903         case ELS_IOCB_TYPE:
2904         case ABORT_IOCB_TYPE:
2905         case MBX_IOCB_TYPE:
2906         default:
2907                 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2908                 if (sp) {
2909                         sp->done(sp, res);
2910                         return 0;
2911                 }
2912                 break;
2913
2914         case ABTS_RESP_24XX:
2915         case CTIO_TYPE7:
2916         case CTIO_CRC2:
2917                 return 1;
2918         }
2919 fatal:
2920         ql_log(ql_log_warn, vha, 0x5030,
2921             "Error entry - invalid handle/queue (%04x).\n", que);
2922         return 0;
2923 }
2924
2925 /**
2926  * qla24xx_mbx_completion() - Process mailbox command completions.
2927  * @vha: SCSI driver HA context
2928  * @mb0: Mailbox0 register
2929  */
2930 static void
2931 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2932 {
2933         uint16_t        cnt;
2934         uint32_t        mboxes;
2935         uint16_t __iomem *wptr;
2936         struct qla_hw_data *ha = vha->hw;
2937         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2938
2939         /* Read all mbox registers? */
2940         WARN_ON_ONCE(ha->mbx_count > 32);
2941         mboxes = (1ULL << ha->mbx_count) - 1;
2942         if (!ha->mcp)
2943                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2944         else
2945                 mboxes = ha->mcp->in_mb;
2946
2947         /* Load return mailbox registers. */
2948         ha->flags.mbox_int = 1;
2949         ha->mailbox_out[0] = mb0;
2950         mboxes >>= 1;
2951         wptr = (uint16_t __iomem *)&reg->mailbox1;
2952
2953         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2954                 if (mboxes & BIT_0)
2955                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2956
2957                 mboxes >>= 1;
2958                 wptr++;
2959         }
2960 }
2961
2962 static void
2963 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2964         struct abort_entry_24xx *pkt)
2965 {
2966         const char func[] = "ABT_IOCB";
2967         srb_t *sp;
2968         struct srb_iocb *abt;
2969
2970         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2971         if (!sp)
2972                 return;
2973
2974         abt = &sp->u.iocb_cmd;
2975         abt->u.abt.comp_status = le16_to_cpu(pkt->nport_handle);
2976         sp->done(sp, 0);
2977 }
2978
2979 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
2980     struct pt_ls4_request *pkt, struct req_que *req)
2981 {
2982         srb_t *sp;
2983         const char func[] = "LS4_IOCB";
2984         uint16_t comp_status;
2985
2986         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2987         if (!sp)
2988                 return;
2989
2990         comp_status = le16_to_cpu(pkt->status);
2991         sp->done(sp, comp_status);
2992 }
2993
2994 /**
2995  * qla24xx_process_response_queue() - Process response queue entries.
2996  * @vha: SCSI driver HA context
2997  * @rsp: response queue
2998  */
2999 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
3000         struct rsp_que *rsp)
3001 {
3002         struct sts_entry_24xx *pkt;
3003         struct qla_hw_data *ha = vha->hw;
3004
3005         if (!ha->flags.fw_started)
3006                 return;
3007
3008         if (rsp->qpair->cpuid != smp_processor_id())
3009                 qla_cpu_update(rsp->qpair, smp_processor_id());
3010
3011         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
3012                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
3013
3014                 rsp->ring_index++;
3015                 if (rsp->ring_index == rsp->length) {
3016                         rsp->ring_index = 0;
3017                         rsp->ring_ptr = rsp->ring;
3018                 } else {
3019                         rsp->ring_ptr++;
3020                 }
3021
3022                 if (pkt->entry_status != 0) {
3023                         if (qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt))
3024                                 goto process_err;
3025
3026                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3027                         wmb();
3028                         continue;
3029                 }
3030 process_err:
3031
3032                 switch (pkt->entry_type) {
3033                 case STATUS_TYPE:
3034                         qla2x00_status_entry(vha, rsp, pkt);
3035                         break;
3036                 case STATUS_CONT_TYPE:
3037                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
3038                         break;
3039                 case VP_RPT_ID_IOCB_TYPE:
3040                         qla24xx_report_id_acquisition(vha,
3041                             (struct vp_rpt_id_entry_24xx *)pkt);
3042                         break;
3043                 case LOGINOUT_PORT_IOCB_TYPE:
3044                         qla24xx_logio_entry(vha, rsp->req,
3045                             (struct logio_entry_24xx *)pkt);
3046                         break;
3047                 case CT_IOCB_TYPE:
3048                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
3049                         break;
3050                 case ELS_IOCB_TYPE:
3051                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
3052                         break;
3053                 case ABTS_RECV_24XX:
3054                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
3055                             IS_QLA28XX(ha)) {
3056                                 /* ensure that the ATIO queue is empty */
3057                                 qlt_handle_abts_recv(vha, rsp,
3058                                     (response_t *)pkt);
3059                                 break;
3060                         } else {
3061                                 qlt_24xx_process_atio_queue(vha, 1);
3062                         }
3063                         /* fall through */
3064                 case ABTS_RESP_24XX:
3065                 case CTIO_TYPE7:
3066                 case CTIO_CRC2:
3067                         qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
3068                         break;
3069                 case PT_LS4_REQUEST:
3070                         qla24xx_nvme_ls4_iocb(vha, (struct pt_ls4_request *)pkt,
3071                             rsp->req);
3072                         break;
3073                 case NOTIFY_ACK_TYPE:
3074                         if (pkt->handle == QLA_TGT_SKIP_HANDLE)
3075                                 qlt_response_pkt_all_vps(vha, rsp,
3076                                     (response_t *)pkt);
3077                         else
3078                                 qla24xxx_nack_iocb_entry(vha, rsp->req,
3079                                         (struct nack_to_isp *)pkt);
3080                         break;
3081                 case MARKER_TYPE:
3082                         /* Do nothing in this case, this check is to prevent it
3083                          * from falling into default case
3084                          */
3085                         break;
3086                 case ABORT_IOCB_TYPE:
3087                         qla24xx_abort_iocb_entry(vha, rsp->req,
3088                             (struct abort_entry_24xx *)pkt);
3089                         break;
3090                 case MBX_IOCB_TYPE:
3091                         qla24xx_mbx_iocb_entry(vha, rsp->req,
3092                             (struct mbx_24xx_entry *)pkt);
3093                         break;
3094                 case VP_CTRL_IOCB_TYPE:
3095                         qla_ctrlvp_completed(vha, rsp->req,
3096                             (struct vp_ctrl_entry_24xx *)pkt);
3097                         break;
3098                 default:
3099                         /* Type Not Supported. */
3100                         ql_dbg(ql_dbg_async, vha, 0x5042,
3101                             "Received unknown response pkt type %x "
3102                             "entry status=%x.\n",
3103                             pkt->entry_type, pkt->entry_status);
3104                         break;
3105                 }
3106                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3107                 wmb();
3108         }
3109
3110         /* Adjust ring index */
3111         if (IS_P3P_TYPE(ha)) {
3112                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
3113
3114                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
3115         } else {
3116                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
3117         }
3118 }
3119
3120 static void
3121 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
3122 {
3123         int rval;
3124         uint32_t cnt;
3125         struct qla_hw_data *ha = vha->hw;
3126         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3127
3128         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
3129             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3130                 return;
3131
3132         rval = QLA_SUCCESS;
3133         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
3134         RD_REG_DWORD(&reg->iobase_addr);
3135         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3136         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3137             rval == QLA_SUCCESS; cnt--) {
3138                 if (cnt) {
3139                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3140                         udelay(10);
3141                 } else
3142                         rval = QLA_FUNCTION_TIMEOUT;
3143         }
3144         if (rval == QLA_SUCCESS)
3145                 goto next_test;
3146
3147         rval = QLA_SUCCESS;
3148         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3149         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3150             rval == QLA_SUCCESS; cnt--) {
3151                 if (cnt) {
3152                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3153                         udelay(10);
3154                 } else
3155                         rval = QLA_FUNCTION_TIMEOUT;
3156         }
3157         if (rval != QLA_SUCCESS)
3158                 goto done;
3159
3160 next_test:
3161         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
3162                 ql_log(ql_log_info, vha, 0x504c,
3163                     "Additional code -- 0x55AA.\n");
3164
3165 done:
3166         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
3167         RD_REG_DWORD(&reg->iobase_window);
3168 }
3169
3170 /**
3171  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
3172  * @irq: interrupt number
3173  * @dev_id: SCSI driver HA context
3174  *
3175  * Called by system whenever the host adapter generates an interrupt.
3176  *
3177  * Returns handled flag.
3178  */
3179 irqreturn_t
3180 qla24xx_intr_handler(int irq, void *dev_id)
3181 {
3182         scsi_qla_host_t *vha;
3183         struct qla_hw_data *ha;
3184         struct device_reg_24xx __iomem *reg;
3185         int             status;
3186         unsigned long   iter;
3187         uint32_t        stat;
3188         uint32_t        hccr;
3189         uint16_t        mb[8];
3190         struct rsp_que *rsp;
3191         unsigned long   flags;
3192         bool process_atio = false;
3193
3194         rsp = (struct rsp_que *) dev_id;
3195         if (!rsp) {
3196                 ql_log(ql_log_info, NULL, 0x5059,
3197                     "%s: NULL response queue pointer.\n", __func__);
3198                 return IRQ_NONE;
3199         }
3200
3201         ha = rsp->hw;
3202         reg = &ha->iobase->isp24;
3203         status = 0;
3204
3205         if (unlikely(pci_channel_offline(ha->pdev)))
3206                 return IRQ_HANDLED;
3207
3208         spin_lock_irqsave(&ha->hardware_lock, flags);
3209         vha = pci_get_drvdata(ha->pdev);
3210         for (iter = 50; iter--; ) {
3211                 stat = RD_REG_DWORD(&reg->host_status);
3212                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3213                         break;
3214                 if (stat & HSRX_RISC_PAUSED) {
3215                         if (unlikely(pci_channel_offline(ha->pdev)))
3216                                 break;
3217
3218                         hccr = RD_REG_DWORD(&reg->hccr);
3219
3220                         ql_log(ql_log_warn, vha, 0x504b,
3221                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3222                             hccr);
3223
3224                         qla2xxx_check_risc_status(vha);
3225
3226                         ha->isp_ops->fw_dump(vha, 1);
3227                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3228                         break;
3229                 } else if ((stat & HSRX_RISC_INT) == 0)
3230                         break;
3231
3232                 switch (stat & 0xff) {
3233                 case INTR_ROM_MB_SUCCESS:
3234                 case INTR_ROM_MB_FAILED:
3235                 case INTR_MB_SUCCESS:
3236                 case INTR_MB_FAILED:
3237                         qla24xx_mbx_completion(vha, MSW(stat));
3238                         status |= MBX_INTERRUPT;
3239
3240                         break;
3241                 case INTR_ASYNC_EVENT:
3242                         mb[0] = MSW(stat);
3243                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3244                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3245                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3246                         qla2x00_async_event(vha, rsp, mb);
3247                         break;
3248                 case INTR_RSP_QUE_UPDATE:
3249                 case INTR_RSP_QUE_UPDATE_83XX:
3250                         qla24xx_process_response_queue(vha, rsp);
3251                         break;
3252                 case INTR_ATIO_QUE_UPDATE_27XX:
3253                 case INTR_ATIO_QUE_UPDATE:
3254                         process_atio = true;
3255                         break;
3256                 case INTR_ATIO_RSP_QUE_UPDATE:
3257                         process_atio = true;
3258                         qla24xx_process_response_queue(vha, rsp);
3259                         break;
3260                 default:
3261                         ql_dbg(ql_dbg_async, vha, 0x504f,
3262                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
3263                         break;
3264                 }
3265                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3266                 RD_REG_DWORD_RELAXED(&reg->hccr);
3267                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
3268                         ndelay(3500);
3269         }
3270         qla2x00_handle_mbx_completion(ha, status);
3271         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3272
3273         if (process_atio) {
3274                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3275                 qlt_24xx_process_atio_queue(vha, 0);
3276                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3277         }
3278
3279         return IRQ_HANDLED;
3280 }
3281
3282 static irqreturn_t
3283 qla24xx_msix_rsp_q(int irq, void *dev_id)
3284 {
3285         struct qla_hw_data *ha;
3286         struct rsp_que *rsp;
3287         struct device_reg_24xx __iomem *reg;
3288         struct scsi_qla_host *vha;
3289         unsigned long flags;
3290
3291         rsp = (struct rsp_que *) dev_id;
3292         if (!rsp) {
3293                 ql_log(ql_log_info, NULL, 0x505a,
3294                     "%s: NULL response queue pointer.\n", __func__);
3295                 return IRQ_NONE;
3296         }
3297         ha = rsp->hw;
3298         reg = &ha->iobase->isp24;
3299
3300         spin_lock_irqsave(&ha->hardware_lock, flags);
3301
3302         vha = pci_get_drvdata(ha->pdev);
3303         qla24xx_process_response_queue(vha, rsp);
3304         if (!ha->flags.disable_msix_handshake) {
3305                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3306                 RD_REG_DWORD_RELAXED(&reg->hccr);
3307         }
3308         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3309
3310         return IRQ_HANDLED;
3311 }
3312
3313 static irqreturn_t
3314 qla24xx_msix_default(int irq, void *dev_id)
3315 {
3316         scsi_qla_host_t *vha;
3317         struct qla_hw_data *ha;
3318         struct rsp_que *rsp;
3319         struct device_reg_24xx __iomem *reg;
3320         int             status;
3321         uint32_t        stat;
3322         uint32_t        hccr;
3323         uint16_t        mb[8];
3324         unsigned long flags;
3325         bool process_atio = false;
3326
3327         rsp = (struct rsp_que *) dev_id;
3328         if (!rsp) {
3329                 ql_log(ql_log_info, NULL, 0x505c,
3330                     "%s: NULL response queue pointer.\n", __func__);
3331                 return IRQ_NONE;
3332         }
3333         ha = rsp->hw;
3334         reg = &ha->iobase->isp24;
3335         status = 0;
3336
3337         spin_lock_irqsave(&ha->hardware_lock, flags);
3338         vha = pci_get_drvdata(ha->pdev);
3339         do {
3340                 stat = RD_REG_DWORD(&reg->host_status);
3341                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3342                         break;
3343                 if (stat & HSRX_RISC_PAUSED) {
3344                         if (unlikely(pci_channel_offline(ha->pdev)))
3345                                 break;
3346
3347                         hccr = RD_REG_DWORD(&reg->hccr);
3348
3349                         ql_log(ql_log_info, vha, 0x5050,
3350                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3351                             hccr);
3352
3353                         qla2xxx_check_risc_status(vha);
3354
3355                         ha->isp_ops->fw_dump(vha, 1);
3356                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3357                         break;
3358                 } else if ((stat & HSRX_RISC_INT) == 0)
3359                         break;
3360
3361                 switch (stat & 0xff) {
3362                 case INTR_ROM_MB_SUCCESS:
3363                 case INTR_ROM_MB_FAILED:
3364                 case INTR_MB_SUCCESS:
3365                 case INTR_MB_FAILED:
3366                         qla24xx_mbx_completion(vha, MSW(stat));
3367                         status |= MBX_INTERRUPT;
3368
3369                         break;
3370                 case INTR_ASYNC_EVENT:
3371                         mb[0] = MSW(stat);
3372                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3373                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3374                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3375                         qla2x00_async_event(vha, rsp, mb);
3376                         break;
3377                 case INTR_RSP_QUE_UPDATE:
3378                 case INTR_RSP_QUE_UPDATE_83XX:
3379                         qla24xx_process_response_queue(vha, rsp);
3380                         break;
3381                 case INTR_ATIO_QUE_UPDATE_27XX:
3382                 case INTR_ATIO_QUE_UPDATE:
3383                         process_atio = true;
3384                         break;
3385                 case INTR_ATIO_RSP_QUE_UPDATE:
3386                         process_atio = true;
3387                         qla24xx_process_response_queue(vha, rsp);
3388                         break;
3389                 default:
3390                         ql_dbg(ql_dbg_async, vha, 0x5051,
3391                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
3392                         break;
3393                 }
3394                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3395         } while (0);
3396         qla2x00_handle_mbx_completion(ha, status);
3397         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3398
3399         if (process_atio) {
3400                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3401                 qlt_24xx_process_atio_queue(vha, 0);
3402                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3403         }
3404
3405         return IRQ_HANDLED;
3406 }
3407
3408 irqreturn_t
3409 qla2xxx_msix_rsp_q(int irq, void *dev_id)
3410 {
3411         struct qla_hw_data *ha;
3412         struct qla_qpair *qpair;
3413         struct device_reg_24xx __iomem *reg;
3414         unsigned long flags;
3415
3416         qpair = dev_id;
3417         if (!qpair) {
3418                 ql_log(ql_log_info, NULL, 0x505b,
3419                     "%s: NULL response queue pointer.\n", __func__);
3420                 return IRQ_NONE;
3421         }
3422         ha = qpair->hw;
3423
3424         /* Clear the interrupt, if enabled, for this response queue */
3425         if (unlikely(!ha->flags.disable_msix_handshake)) {
3426                 reg = &ha->iobase->isp24;
3427                 spin_lock_irqsave(&ha->hardware_lock, flags);
3428                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3429                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3430         }
3431
3432         queue_work(ha->wq, &qpair->q_work);
3433
3434         return IRQ_HANDLED;
3435 }
3436
3437 /* Interrupt handling helpers. */
3438
3439 struct qla_init_msix_entry {
3440         const char *name;
3441         irq_handler_t handler;
3442 };
3443
3444 static const struct qla_init_msix_entry msix_entries[] = {
3445         { "default", qla24xx_msix_default },
3446         { "rsp_q", qla24xx_msix_rsp_q },
3447         { "atio_q", qla83xx_msix_atio_q },
3448         { "qpair_multiq", qla2xxx_msix_rsp_q },
3449 };
3450
3451 static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
3452         { "qla2xxx (default)", qla82xx_msix_default },
3453         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3454 };
3455
3456 static int
3457 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3458 {
3459         int i, ret;
3460         struct qla_msix_entry *qentry;
3461         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3462         int min_vecs = QLA_BASE_VECTORS;
3463         struct irq_affinity desc = {
3464                 .pre_vectors = QLA_BASE_VECTORS,
3465         };
3466
3467         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3468             IS_ATIO_MSIX_CAPABLE(ha)) {
3469                 desc.pre_vectors++;
3470                 min_vecs++;
3471         }
3472
3473         if (USER_CTRL_IRQ(ha) || !ha->mqiobase) {
3474                 /* user wants to control IRQ setting for target mode */
3475                 ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
3476                     ha->msix_count, PCI_IRQ_MSIX);
3477         } else
3478                 ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
3479                     ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3480                     &desc);
3481
3482         if (ret < 0) {
3483                 ql_log(ql_log_fatal, vha, 0x00c7,
3484                     "MSI-X: Failed to enable support, "
3485                     "giving   up -- %d/%d.\n",
3486                     ha->msix_count, ret);
3487                 goto msix_out;
3488         } else if (ret < ha->msix_count) {
3489                 ql_log(ql_log_info, vha, 0x00c6,
3490                     "MSI-X: Using %d vectors\n", ret);
3491                 ha->msix_count = ret;
3492                 /* Recalculate queue values */
3493                 if (ha->mqiobase && (ql2xmqsupport || ql2xnvmeenable)) {
3494                         ha->max_req_queues = ha->msix_count - 1;
3495
3496                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3497                         if (QLA_TGT_MODE_ENABLED())
3498                                 ha->max_req_queues--;
3499
3500                         ha->max_rsp_queues = ha->max_req_queues;
3501
3502                         ha->max_qpairs = ha->max_req_queues - 1;
3503                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3504                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3505                 }
3506         }
3507         vha->irq_offset = desc.pre_vectors;
3508         ha->msix_entries = kcalloc(ha->msix_count,
3509                                    sizeof(struct qla_msix_entry),
3510                                    GFP_KERNEL);
3511         if (!ha->msix_entries) {
3512                 ql_log(ql_log_fatal, vha, 0x00c8,
3513                     "Failed to allocate memory for ha->msix_entries.\n");
3514                 ret = -ENOMEM;
3515                 goto free_irqs;
3516         }
3517         ha->flags.msix_enabled = 1;
3518
3519         for (i = 0; i < ha->msix_count; i++) {
3520                 qentry = &ha->msix_entries[i];
3521                 qentry->vector = pci_irq_vector(ha->pdev, i);
3522                 qentry->entry = i;
3523                 qentry->have_irq = 0;
3524                 qentry->in_use = 0;
3525                 qentry->handle = NULL;
3526         }
3527
3528         /* Enable MSI-X vectors for the base queue */
3529         for (i = 0; i < QLA_BASE_VECTORS; i++) {
3530                 qentry = &ha->msix_entries[i];
3531                 qentry->handle = rsp;
3532                 rsp->msix = qentry;
3533                 scnprintf(qentry->name, sizeof(qentry->name),
3534                     "qla2xxx%lu_%s", vha->host_no, msix_entries[i].name);
3535                 if (IS_P3P_TYPE(ha))
3536                         ret = request_irq(qentry->vector,
3537                                 qla82xx_msix_entries[i].handler,
3538                                 0, qla82xx_msix_entries[i].name, rsp);
3539                 else
3540                         ret = request_irq(qentry->vector,
3541                                 msix_entries[i].handler,
3542                                 0, qentry->name, rsp);
3543                 if (ret)
3544                         goto msix_register_fail;
3545                 qentry->have_irq = 1;
3546                 qentry->in_use = 1;
3547         }
3548
3549         /*
3550          * If target mode is enable, also request the vector for the ATIO
3551          * queue.
3552          */
3553         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3554             IS_ATIO_MSIX_CAPABLE(ha)) {
3555                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
3556                 rsp->msix = qentry;
3557                 qentry->handle = rsp;
3558                 scnprintf(qentry->name, sizeof(qentry->name),
3559                     "qla2xxx%lu_%s", vha->host_no,
3560                     msix_entries[QLA_ATIO_VECTOR].name);
3561                 qentry->in_use = 1;
3562                 ret = request_irq(qentry->vector,
3563                         msix_entries[QLA_ATIO_VECTOR].handler,
3564                         0, qentry->name, rsp);
3565                 qentry->have_irq = 1;
3566         }
3567
3568 msix_register_fail:
3569         if (ret) {
3570                 ql_log(ql_log_fatal, vha, 0x00cb,
3571                     "MSI-X: unable to register handler -- %x/%d.\n",
3572                     qentry->vector, ret);
3573                 qla2x00_free_irqs(vha);
3574                 ha->mqenable = 0;
3575                 goto msix_out;
3576         }
3577
3578         /* Enable MSI-X vector for response queue update for queue 0 */
3579         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
3580                 if (ha->msixbase && ha->mqiobase &&
3581                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3582                      ql2xmqsupport))
3583                         ha->mqenable = 1;
3584         } else
3585                 if (ha->mqiobase &&
3586                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3587                      ql2xmqsupport))
3588                         ha->mqenable = 1;
3589         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3590             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3591             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3592         ql_dbg(ql_dbg_init, vha, 0x0055,
3593             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3594             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3595
3596 msix_out:
3597         return ret;
3598
3599 free_irqs:
3600         pci_free_irq_vectors(ha->pdev);
3601         goto msix_out;
3602 }
3603
3604 int
3605 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3606 {
3607         int ret = QLA_FUNCTION_FAILED;
3608         device_reg_t *reg = ha->iobase;
3609         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3610
3611         /* If possible, enable MSI-X. */
3612         if (ql2xenablemsix == 0 || (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
3613             !IS_QLA8432(ha) && !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) &&
3614             !IS_QLAFX00(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)))
3615                 goto skip_msi;
3616
3617         if (ql2xenablemsix == 2)
3618                 goto skip_msix;
3619
3620         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3621                 (ha->pdev->subsystem_device == 0x7040 ||
3622                 ha->pdev->subsystem_device == 0x7041 ||
3623                 ha->pdev->subsystem_device == 0x1705)) {
3624                 ql_log(ql_log_warn, vha, 0x0034,
3625                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3626                         ha->pdev->subsystem_vendor,
3627                         ha->pdev->subsystem_device);
3628                 goto skip_msi;
3629         }
3630
3631         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3632                 ql_log(ql_log_warn, vha, 0x0035,
3633                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3634                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3635                 goto skip_msix;
3636         }
3637
3638         ret = qla24xx_enable_msix(ha, rsp);
3639         if (!ret) {
3640                 ql_dbg(ql_dbg_init, vha, 0x0036,
3641                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3642                     ha->chip_revision, ha->fw_attributes);
3643                 goto clear_risc_ints;
3644         }
3645
3646 skip_msix:
3647
3648         ql_log(ql_log_info, vha, 0x0037,
3649             "Falling back-to MSI mode -- ret=%d.\n", ret);
3650
3651         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3652             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3653             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3654                 goto skip_msi;
3655
3656         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
3657         if (ret > 0) {
3658                 ql_dbg(ql_dbg_init, vha, 0x0038,
3659                     "MSI: Enabled.\n");
3660                 ha->flags.msi_enabled = 1;
3661         } else
3662                 ql_log(ql_log_warn, vha, 0x0039,
3663                     "Falling back-to INTa mode -- ret=%d.\n", ret);
3664 skip_msi:
3665
3666         /* Skip INTx on ISP82xx. */
3667         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3668                 return QLA_FUNCTION_FAILED;
3669
3670         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3671             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3672             QLA2XXX_DRIVER_NAME, rsp);
3673         if (ret) {
3674                 ql_log(ql_log_warn, vha, 0x003a,
3675                     "Failed to reserve interrupt %d already in use.\n",
3676                     ha->pdev->irq);
3677                 goto fail;
3678         } else if (!ha->flags.msi_enabled) {
3679                 ql_dbg(ql_dbg_init, vha, 0x0125,
3680                     "INTa mode: Enabled.\n");
3681                 ha->flags.mr_intr_valid = 1;
3682         }
3683
3684 clear_risc_ints:
3685         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3686                 goto fail;
3687
3688         spin_lock_irq(&ha->hardware_lock);
3689         WRT_REG_WORD(&reg->isp.semaphore, 0);
3690         spin_unlock_irq(&ha->hardware_lock);
3691
3692 fail:
3693         return ret;
3694 }
3695
3696 void
3697 qla2x00_free_irqs(scsi_qla_host_t *vha)
3698 {
3699         struct qla_hw_data *ha = vha->hw;
3700         struct rsp_que *rsp;
3701         struct qla_msix_entry *qentry;
3702         int i;
3703
3704         /*
3705          * We need to check that ha->rsp_q_map is valid in case we are called
3706          * from a probe failure context.
3707          */
3708         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3709                 goto free_irqs;
3710         rsp = ha->rsp_q_map[0];
3711
3712         if (ha->flags.msix_enabled) {
3713                 for (i = 0; i < ha->msix_count; i++) {
3714                         qentry = &ha->msix_entries[i];
3715                         if (qentry->have_irq) {
3716                                 irq_set_affinity_notifier(qentry->vector, NULL);
3717                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
3718                         }
3719                 }
3720                 kfree(ha->msix_entries);
3721                 ha->msix_entries = NULL;
3722                 ha->flags.msix_enabled = 0;
3723                 ql_dbg(ql_dbg_init, vha, 0x0042,
3724                         "Disabled MSI-X.\n");
3725         } else {
3726                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
3727         }
3728
3729 free_irqs:
3730         pci_free_irq_vectors(ha->pdev);
3731 }
3732
3733 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
3734         struct qla_msix_entry *msix, int vector_type)
3735 {
3736         const struct qla_init_msix_entry *intr = &msix_entries[vector_type];
3737         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3738         int ret;
3739
3740         scnprintf(msix->name, sizeof(msix->name),
3741             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
3742         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
3743         if (ret) {
3744                 ql_log(ql_log_fatal, vha, 0x00e6,
3745                     "MSI-X: Unable to register handler -- %x/%d.\n",
3746                     msix->vector, ret);
3747                 return ret;
3748         }
3749         msix->have_irq = 1;
3750         msix->handle = qpair;
3751         return ret;
3752 }