drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  * QLogic Fibre Channel HBA Driver
   3  * Copyright (c)  2003-2014 QLogic Corporation
   4  *
   5  * See LICENSE.qla2xxx for copyright and licensing details.
   6  */
   7 #include "qla_def.h"
   8 #include "qla_target.h"
   9
  10 #include <linux/delay.h>
  11 #include <linux/slab.h>
  12 #include <linux/cpu.h>
  13 #include <linux/t10-pi.h>
  14 #include <scsi/scsi_tcq.h>
  15 #include <scsi/scsi_bsg_fc.h>
  16 #include <scsi/scsi_eh.h>
  17 #include <scsi/fc/fc_fs.h>
  18 #include <linux/nvme-fc-driver.h>
  19
  20 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  21 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
  22 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
  23 static int qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
  24         sts_entry_t *);
  25
  26 const char *const port_state_str[] = {
  27         "Unknown",
  28         "UNCONFIGURED",
  29         "DEAD",
  30         "LOST",
  31         "ONLINE"
  32 };
  33
  34 /**
  35  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  36  * @irq: interrupt number
  37  * @dev_id: SCSI driver HA context
  38  *
  39  * Called by system whenever the host adapter generates an interrupt.
  40  *
  41  * Returns handled flag.
  42  */
  43 irqreturn_t
  44 qla2100_intr_handler(int irq, void *dev_id)
  45 {
  46         scsi_qla_host_t *vha;
  47         struct qla_hw_data *ha;
  48         struct device_reg_2xxx __iomem *reg;
  49         int             status;
  50         unsigned long   iter;
  51         uint16_t        hccr;
  52         uint16_t        mb[8];
  53         struct rsp_que *rsp;
  54         unsigned long   flags;
  55
  56         rsp = (struct rsp_que *) dev_id;
  57         if (!rsp) {
  58                 ql_log(ql_log_info, NULL, 0x505d,
  59                     "%s: NULL response queue pointer.\n", __func__);
  60                 return (IRQ_NONE);
  61         }
  62
  63         ha = rsp->hw;
  64         reg = &ha->iobase->isp;
  65         status = 0;
  66
  67         spin_lock_irqsave(&ha->hardware_lock, flags);
  68         vha = pci_get_drvdata(ha->pdev);
  69         for (iter = 50; iter--; ) {
  70                 hccr = RD_REG_WORD(&reg->hccr);
  71                 if (qla2x00_check_reg16_for_disconnect(vha, hccr))
  72                         break;
  73                 if (hccr & HCCR_RISC_PAUSE) {
  74                         if (pci_channel_offline(ha->pdev))
  75                                 break;
  76
  77                         /*
  78                          * Issue a "HARD" reset in order for the RISC interrupt
  79                          * bit to be cleared.  Schedule a big hammer to get
  80                          * out of the RISC PAUSED state.
  81                          */
  82                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
  83                         RD_REG_WORD(&reg->hccr);
  84
  85                         ha->isp_ops->fw_dump(vha, 1);
  86                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
  87                         break;
  88                 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  89                         break;
  90
  91                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  92                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  93                         RD_REG_WORD(&reg->hccr);
  94
  95                         /* Get mailbox data. */
  96                         mb[0] = RD_MAILBOX_REG(ha, reg, 0);
  97                         if (mb[0] > 0x3fff && mb[0] < 0x8000) {
  98                                 qla2x00_mbx_completion(vha, mb[0]);
  99                                 status |= MBX_INTERRUPT;
 100                         } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
 101                                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 102                                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 103                                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 104                                 qla2x00_async_event(vha, rsp, mb);
 105                         } else {
 106                                 /*EMPTY*/
 107                                 ql_dbg(ql_dbg_async, vha, 0x5025,
 108                                     "Unrecognized interrupt type (%d).\n",
 109                                     mb[0]);
 110                         }
 111                         /* Release mailbox registers. */
 112                         WRT_REG_WORD(&reg->semaphore, 0);
 113                         RD_REG_WORD(&reg->semaphore);
 114                 } else {
 115                         qla2x00_process_response_queue(rsp);
 116
 117                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 118                         RD_REG_WORD(&reg->hccr);
 119                 }
 120         }
 121         qla2x00_handle_mbx_completion(ha, status);
 122         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 123
 124         return (IRQ_HANDLED);
 125 }
 126
 127 bool
 128 qla2x00_check_reg32_for_disconnect(scsi_qla_host_t *vha, uint32_t reg)
 129 {
 130         /* Check for PCI disconnection */
 131         if (reg == 0xffffffff && !pci_channel_offline(vha->hw->pdev)) {
 132                 if (!test_and_set_bit(PFLG_DISCONNECTED, &vha->pci_flags) &&
 133                     !test_bit(PFLG_DRIVER_REMOVING, &vha->pci_flags) &&
 134                     !test_bit(PFLG_DRIVER_PROBING, &vha->pci_flags)) {
 135                         /*
 136                          * Schedule this (only once) on the default system
 137                          * workqueue so that all the adapter workqueues and the
 138                          * DPC thread can be shutdown cleanly.
 139                          */
 140                         schedule_work(&vha->hw->board_disable);
 141                 }
 142                 return true;
 143         } else
 144                 return false;
 145 }
 146
 147 bool
 148 qla2x00_check_reg16_for_disconnect(scsi_qla_host_t *vha, uint16_t reg)
 149 {
 150         return qla2x00_check_reg32_for_disconnect(vha, 0xffff0000 | reg);
 151 }
 152
 153 /**
 154  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 155  * @irq: interrupt number
 156  * @dev_id: SCSI driver HA context
 157  *
 158  * Called by system whenever the host adapter generates an interrupt.
 159  *
 160  * Returns handled flag.
 161  */
 162 irqreturn_t
 163 qla2300_intr_handler(int irq, void *dev_id)
 164 {
 165         scsi_qla_host_t *vha;
 166         struct device_reg_2xxx __iomem *reg;
 167         int             status;
 168         unsigned long   iter;
 169         uint32_t        stat;
 170         uint16_t        hccr;
 171         uint16_t        mb[8];
 172         struct rsp_que *rsp;
 173         struct qla_hw_data *ha;
 174         unsigned long   flags;
 175
 176         rsp = (struct rsp_que *) dev_id;
 177         if (!rsp) {
 178                 ql_log(ql_log_info, NULL, 0x5058,
 179                     "%s: NULL response queue pointer.\n", __func__);
 180                 return (IRQ_NONE);
 181         }
 182
 183         ha = rsp->hw;
 184         reg = &ha->iobase->isp;
 185         status = 0;
 186
 187         spin_lock_irqsave(&ha->hardware_lock, flags);
 188         vha = pci_get_drvdata(ha->pdev);
 189         for (iter = 50; iter--; ) {
 190                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 191                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
 192                         break;
 193                 if (stat & HSR_RISC_PAUSED) {
 194                         if (unlikely(pci_channel_offline(ha->pdev)))
 195                                 break;
 196
 197                         hccr = RD_REG_WORD(&reg->hccr);
 198
 199                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 200                                 ql_log(ql_log_warn, vha, 0x5026,
 201                                     "Parity error -- HCCR=%x, Dumping "
 202                                     "firmware.\n", hccr);
 203                         else
 204                                 ql_log(ql_log_warn, vha, 0x5027,
 205                                     "RISC paused -- HCCR=%x, Dumping "
 206                                     "firmware.\n", hccr);
 207
 208                         /*
 209                          * Issue a "HARD" reset in order for the RISC
 210                          * interrupt bit to be cleared.  Schedule a big
 211                          * hammer to get out of the RISC PAUSED state.
 212                          */
 213                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 214                         RD_REG_WORD(&reg->hccr);
 215
 216                         ha->isp_ops->fw_dump(vha, 1);
 217                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 218                         break;
 219                 } else if ((stat & HSR_RISC_INT) == 0)
 220                         break;
 221
 222                 switch (stat & 0xff) {
 223                 case 0x1:
 224                 case 0x2:
 225                 case 0x10:
 226                 case 0x11:
 227                         qla2x00_mbx_completion(vha, MSW(stat));
 228                         status |= MBX_INTERRUPT;
 229
 230                         /* Release mailbox registers. */
 231                         WRT_REG_WORD(&reg->semaphore, 0);
 232                         break;
 233                 case 0x12:
 234                         mb[0] = MSW(stat);
 235                         mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 236                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 237                         mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 238                         qla2x00_async_event(vha, rsp, mb);
 239                         break;
 240                 case 0x13:
 241                         qla2x00_process_response_queue(rsp);
 242                         break;
 243                 case 0x15:
 244                         mb[0] = MBA_CMPLT_1_16BIT;
 245                         mb[1] = MSW(stat);
 246                         qla2x00_async_event(vha, rsp, mb);
 247                         break;
 248                 case 0x16:
 249                         mb[0] = MBA_SCSI_COMPLETION;
 250                         mb[1] = MSW(stat);
 251                         mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 252                         qla2x00_async_event(vha, rsp, mb);
 253                         break;
 254                 default:
 255                         ql_dbg(ql_dbg_async, vha, 0x5028,
 256                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
 257                         break;
 258                 }
 259                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 260                 RD_REG_WORD_RELAXED(&reg->hccr);
 261         }
 262         qla2x00_handle_mbx_completion(ha, status);
 263         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 264
 265         return (IRQ_HANDLED);
 266 }
 267
 268 /**
 269  * qla2x00_mbx_completion() - Process mailbox command completions.
 270  * @vha: SCSI driver HA context
 271  * @mb0: Mailbox0 register
 272  */
 273 static void
 274 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
 275 {
 276         uint16_t        cnt;
 277         uint32_t        mboxes;
 278         uint16_t __iomem *wptr;
 279         struct qla_hw_data *ha = vha->hw;
 280         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 281
 282         /* Read all mbox registers? */
 283         WARN_ON_ONCE(ha->mbx_count > 32);
 284         mboxes = (1ULL << ha->mbx_count) - 1;
 285         if (!ha->mcp)
 286                 ql_dbg(ql_dbg_async, vha, 0x5001, "MBX pointer ERROR.\n");
 287         else
 288                 mboxes = ha->mcp->in_mb;
 289
 290         /* Load return mailbox registers. */
 291         ha->flags.mbox_int = 1;
 292         ha->mailbox_out[0] = mb0;
 293         mboxes >>= 1;
 294         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 295
 296         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 297                 if (IS_QLA2200(ha) && cnt == 8)
 298                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 299                 if ((cnt == 4 || cnt == 5) && (mboxes & BIT_0))
 300                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 301                 else if (mboxes & BIT_0)
 302                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 303
 304                 wptr++;
 305                 mboxes >>= 1;
 306         }
 307 }
 308
 309 static void
 310 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
 311 {
 312         static char *event[] =
 313                 { "Complete", "Request Notification", "Time Extension" };
 314         int rval;
 315         struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
 316         struct device_reg_82xx __iomem *reg82 = &vha->hw->iobase->isp82;
 317         uint16_t __iomem *wptr;
 318         uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
 319
 320         /* Seed data -- mailbox1 -> mailbox7. */
 321         if (IS_QLA81XX(vha->hw) || IS_QLA83XX(vha->hw))
 322                 wptr = (uint16_t __iomem *)&reg24->mailbox1;
 323         else if (IS_QLA8044(vha->hw))
 324                 wptr = (uint16_t __iomem *)&reg82->mailbox_out[1];
 325         else
 326                 return;
 327
 328         for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
 329                 mb[cnt] = RD_REG_WORD(wptr);
 330
 331         ql_dbg(ql_dbg_async, vha, 0x5021,
 332             "Inter-Driver Communication %s -- "
 333             "%04x %04x %04x %04x %04x %04x %04x.\n",
 334             event[aen & 0xff], mb[0], mb[1], mb[2], mb[3],
 335             mb[4], mb[5], mb[6]);
 336         switch (aen) {
 337         /* Handle IDC Error completion case. */
 338         case MBA_IDC_COMPLETE:
 339                 if (mb[1] >> 15) {
 340                         vha->hw->flags.idc_compl_status = 1;
 341                         if (vha->hw->notify_dcbx_comp && !vha->vp_idx)
 342                                 complete(&vha->hw->dcbx_comp);
 343                 }
 344                 break;
 345
 346         case MBA_IDC_NOTIFY:
 347                 /* Acknowledgement needed? [Notify && non-zero timeout]. */
 348                 timeout = (descr >> 8) & 0xf;
 349                 ql_dbg(ql_dbg_async, vha, 0x5022,
 350                     "%lu Inter-Driver Communication %s -- ACK timeout=%d.\n",
 351                     vha->host_no, event[aen & 0xff], timeout);
 352
 353                 if (!timeout)
 354                         return;
 355                 rval = qla2x00_post_idc_ack_work(vha, mb);
 356                 if (rval != QLA_SUCCESS)
 357                         ql_log(ql_log_warn, vha, 0x5023,
 358                             "IDC failed to post ACK.\n");
 359                 break;
 360         case MBA_IDC_TIME_EXT:
 361                 vha->hw->idc_extend_tmo = descr;
 362                 ql_dbg(ql_dbg_async, vha, 0x5087,
 363                     "%lu Inter-Driver Communication %s -- "
 364                     "Extend timeout by=%d.\n",
 365                     vha->host_no, event[aen & 0xff], vha->hw->idc_extend_tmo);
 366                 break;
 367         }
 368 }
 369
 370 #define LS_UNKNOWN      2
 371 const char *
 372 qla2x00_get_link_speed_str(struct qla_hw_data *ha, uint16_t speed)
 373 {
 374         static const char *const link_speeds[] = {
 375                 "1", "2", "?", "4", "8", "16", "32", "10"
 376         };
 377 #define QLA_LAST_SPEED (ARRAY_SIZE(link_speeds) - 1)
 378
 379         if (IS_QLA2100(ha) || IS_QLA2200(ha))
 380                 return link_speeds[0];
 381         else if (speed == 0x13)
 382                 return link_speeds[QLA_LAST_SPEED];
 383         else if (speed < QLA_LAST_SPEED)
 384                 return link_speeds[speed];
 385         else
 386                 return link_speeds[LS_UNKNOWN];
 387 }
 388
 389 static void
 390 qla83xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
 391 {
 392         struct qla_hw_data *ha = vha->hw;
 393
 394         /*
 395          * 8200 AEN Interpretation:
 396          * mb[0] = AEN code
 397          * mb[1] = AEN Reason code
 398          * mb[2] = LSW of Peg-Halt Status-1 Register
 399          * mb[6] = MSW of Peg-Halt Status-1 Register
 400          * mb[3] = LSW of Peg-Halt Status-2 register
 401          * mb[7] = MSW of Peg-Halt Status-2 register
 402          * mb[4] = IDC Device-State Register value
 403          * mb[5] = IDC Driver-Presence Register value
 404          */
 405         ql_dbg(ql_dbg_async, vha, 0x506b, "AEN Code: mb[0] = 0x%x AEN reason: "
 406             "mb[1] = 0x%x PH-status1: mb[2] = 0x%x PH-status1: mb[6] = 0x%x.\n",
 407             mb[0], mb[1], mb[2], mb[6]);
 408         ql_dbg(ql_dbg_async, vha, 0x506c, "PH-status2: mb[3] = 0x%x "
 409             "PH-status2: mb[7] = 0x%x Device-State: mb[4] = 0x%x "
 410             "Drv-Presence: mb[5] = 0x%x.\n", mb[3], mb[7], mb[4], mb[5]);
 411
 412         if (mb[1] & (IDC_PEG_HALT_STATUS_CHANGE | IDC_NIC_FW_REPORTED_FAILURE |
 413                                 IDC_HEARTBEAT_FAILURE)) {
 414                 ha->flags.nic_core_hung = 1;
 415                 ql_log(ql_log_warn, vha, 0x5060,
 416                     "83XX: F/W Error Reported: Check if reset required.\n");
 417
 418                 if (mb[1] & IDC_PEG_HALT_STATUS_CHANGE) {
 419                         uint32_t protocol_engine_id, fw_err_code, err_level;
 420
 421                         /*
 422                          * IDC_PEG_HALT_STATUS_CHANGE interpretation:
 423                          *  - PEG-Halt Status-1 Register:
 424                          *      (LSW = mb[2], MSW = mb[6])
 425                          *      Bits 0-7   = protocol-engine ID
 426                          *      Bits 8-28  = f/w error code
 427                          *      Bits 29-31 = Error-level
 428                          *          Error-level 0x1 = Non-Fatal error
 429                          *          Error-level 0x2 = Recoverable Fatal error
 430                          *          Error-level 0x4 = UnRecoverable Fatal error
 431                          *  - PEG-Halt Status-2 Register:
 432                          *      (LSW = mb[3], MSW = mb[7])
 433                          */
 434                         protocol_engine_id = (mb[2] & 0xff);
 435                         fw_err_code = (((mb[2] & 0xff00) >> 8) |
 436                             ((mb[6] & 0x1fff) << 8));
 437                         err_level = ((mb[6] & 0xe000) >> 13);
 438                         ql_log(ql_log_warn, vha, 0x5061, "PegHalt Status-1 "
 439                             "Register: protocol_engine_id=0x%x "
 440                             "fw_err_code=0x%x err_level=0x%x.\n",
 441                             protocol_engine_id, fw_err_code, err_level);
 442                         ql_log(ql_log_warn, vha, 0x5062, "PegHalt Status-2 "
 443                             "Register: 0x%x%x.\n", mb[7], mb[3]);
 444                         if (err_level == ERR_LEVEL_NON_FATAL) {
 445                                 ql_log(ql_log_warn, vha, 0x5063,
 446                                     "Not a fatal error, f/w has recovered itself.\n");
 447                         } else if (err_level == ERR_LEVEL_RECOVERABLE_FATAL) {
 448                                 ql_log(ql_log_fatal, vha, 0x5064,
 449                                     "Recoverable Fatal error: Chip reset "
 450                                     "required.\n");
 451                                 qla83xx_schedule_work(vha,
 452                                     QLA83XX_NIC_CORE_RESET);
 453                         } else if (err_level == ERR_LEVEL_UNRECOVERABLE_FATAL) {
 454                                 ql_log(ql_log_fatal, vha, 0x5065,
 455                                     "Unrecoverable Fatal error: Set FAILED "
 456                                     "state, reboot required.\n");
 457                                 qla83xx_schedule_work(vha,
 458                                     QLA83XX_NIC_CORE_UNRECOVERABLE);
 459                         }
 460                 }
 461
 462                 if (mb[1] & IDC_NIC_FW_REPORTED_FAILURE) {
 463                         uint16_t peg_fw_state, nw_interface_link_up;
 464                         uint16_t nw_interface_signal_detect, sfp_status;
 465                         uint16_t htbt_counter, htbt_monitor_enable;
 466                         uint16_t sfp_additional_info, sfp_multirate;
 467                         uint16_t sfp_tx_fault, link_speed, dcbx_status;
 468
 469                         /*
 470                          * IDC_NIC_FW_REPORTED_FAILURE interpretation:
 471                          *  - PEG-to-FC Status Register:
 472                          *      (LSW = mb[2], MSW = mb[6])
 473                          *      Bits 0-7   = Peg-Firmware state
 474                          *      Bit 8      = N/W Interface Link-up
 475                          *      Bit 9      = N/W Interface signal detected
 476                          *      Bits 10-11 = SFP Status
 477                          *        SFP Status 0x0 = SFP+ transceiver not expected
 478                          *        SFP Status 0x1 = SFP+ transceiver not present
 479                          *        SFP Status 0x2 = SFP+ transceiver invalid
 480                          *        SFP Status 0x3 = SFP+ transceiver present and
 481                          *        valid
 482                          *      Bits 12-14 = Heartbeat Counter
 483                          *      Bit 15     = Heartbeat Monitor Enable
 484                          *      Bits 16-17 = SFP Additional Info
 485                          *        SFP info 0x0 = Unregocnized transceiver for
 486                          *        Ethernet
 487                          *        SFP info 0x1 = SFP+ brand validation failed
 488                          *        SFP info 0x2 = SFP+ speed validation failed
 489                          *        SFP info 0x3 = SFP+ access error
 490                          *      Bit 18     = SFP Multirate
 491                          *      Bit 19     = SFP Tx Fault
 492                          *      Bits 20-22 = Link Speed
 493                          *      Bits 23-27 = Reserved
 494                          *      Bits 28-30 = DCBX Status
 495                          *        DCBX Status 0x0 = DCBX Disabled
 496                          *        DCBX Status 0x1 = DCBX Enabled
 497                          *        DCBX Status 0x2 = DCBX Exchange error
 498                          *      Bit 31     = Reserved
 499                          */
 500                         peg_fw_state = (mb[2] & 0x00ff);
 501                         nw_interface_link_up = ((mb[2] & 0x0100) >> 8);
 502                         nw_interface_signal_detect = ((mb[2] & 0x0200) >> 9);
 503                         sfp_status = ((mb[2] & 0x0c00) >> 10);
 504                         htbt_counter = ((mb[2] & 0x7000) >> 12);
 505                         htbt_monitor_enable = ((mb[2] & 0x8000) >> 15);
 506                         sfp_additional_info = (mb[6] & 0x0003);
 507                         sfp_multirate = ((mb[6] & 0x0004) >> 2);
 508                         sfp_tx_fault = ((mb[6] & 0x0008) >> 3);
 509                         link_speed = ((mb[6] & 0x0070) >> 4);
 510                         dcbx_status = ((mb[6] & 0x7000) >> 12);
 511
 512                         ql_log(ql_log_warn, vha, 0x5066,
 513                             "Peg-to-Fc Status Register:\n"
 514                             "peg_fw_state=0x%x, nw_interface_link_up=0x%x, "
 515                             "nw_interface_signal_detect=0x%x"
 516                             "\nsfp_statis=0x%x.\n ", peg_fw_state,
 517                             nw_interface_link_up, nw_interface_signal_detect,
 518                             sfp_status);
 519                         ql_log(ql_log_warn, vha, 0x5067,
 520                             "htbt_counter=0x%x, htbt_monitor_enable=0x%x, "
 521                             "sfp_additional_info=0x%x, sfp_multirate=0x%x.\n ",
 522                             htbt_counter, htbt_monitor_enable,
 523                             sfp_additional_info, sfp_multirate);
 524                         ql_log(ql_log_warn, vha, 0x5068,
 525                             "sfp_tx_fault=0x%x, link_state=0x%x, "
 526                             "dcbx_status=0x%x.\n", sfp_tx_fault, link_speed,
 527                             dcbx_status);
 528
 529                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 530                 }
 531
 532                 if (mb[1] & IDC_HEARTBEAT_FAILURE) {
 533                         ql_log(ql_log_warn, vha, 0x5069,
 534                             "Heartbeat Failure encountered, chip reset "
 535                             "required.\n");
 536
 537                         qla83xx_schedule_work(vha, QLA83XX_NIC_CORE_RESET);
 538                 }
 539         }
 540
 541         if (mb[1] & IDC_DEVICE_STATE_CHANGE) {
 542                 ql_log(ql_log_info, vha, 0x506a,
 543                     "IDC Device-State changed = 0x%x.\n", mb[4]);
 544                 if (ha->flags.nic_core_reset_owner)
 545                         return;
 546                 qla83xx_schedule_work(vha, MBA_IDC_AEN);
 547         }
 548 }
 549
 550 int
 551 qla2x00_is_a_vp_did(scsi_qla_host_t *vha, uint32_t rscn_entry)
 552 {
 553         struct qla_hw_data *ha = vha->hw;
 554         scsi_qla_host_t *vp;
 555         uint32_t vp_did;
 556         unsigned long flags;
 557         int ret = 0;
 558
 559         if (!ha->num_vhosts)
 560                 return ret;
 561
 562         spin_lock_irqsave(&ha->vport_slock, flags);
 563         list_for_each_entry(vp, &ha->vp_list, list) {
 564                 vp_did = vp->d_id.b24;
 565                 if (vp_did == rscn_entry) {
 566                         ret = 1;
 567                         break;
 568                 }
 569         }
 570         spin_unlock_irqrestore(&ha->vport_slock, flags);
 571
 572         return ret;
 573 }
 574
 575 fc_port_t *
 576 qla2x00_find_fcport_by_loopid(scsi_qla_host_t *vha, uint16_t loop_id)
 577 {
 578         fc_port_t *f, *tf;
 579
 580         f = tf = NULL;
 581         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list)
 582                 if (f->loop_id == loop_id)
 583                         return f;
 584         return NULL;
 585 }
 586
 587 fc_port_t *
 588 qla2x00_find_fcport_by_wwpn(scsi_qla_host_t *vha, u8 *wwpn, u8 incl_deleted)
 589 {
 590         fc_port_t *f, *tf;
 591
 592         f = tf = NULL;
 593         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 594                 if (memcmp(f->port_name, wwpn, WWN_SIZE) == 0) {
 595                         if (incl_deleted)
 596                                 return f;
 597                         else if (f->deleted == 0)
 598                                 return f;
 599                 }
 600         }
 601         return NULL;
 602 }
 603
 604 fc_port_t *
 605 qla2x00_find_fcport_by_nportid(scsi_qla_host_t *vha, port_id_t *id,
 606         u8 incl_deleted)
 607 {
 608         fc_port_t *f, *tf;
 609
 610         f = tf = NULL;
 611         list_for_each_entry_safe(f, tf, &vha->vp_fcports, list) {
 612                 if (f->d_id.b24 == id->b24) {
 613                         if (incl_deleted)
 614                                 return f;
 615                         else if (f->deleted == 0)
 616                                 return f;
 617                 }
 618         }
 619         return NULL;
 620 }
 621
 622 /**
 623  * qla2x00_async_event() - Process aynchronous events.
 624  * @vha: SCSI driver HA context
 625  * @rsp: response queue
 626  * @mb: Mailbox registers (0 - 3)
 627  */
 628 void
 629 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 630 {
 631         uint16_t        handle_cnt;
 632         uint16_t        cnt, mbx;
 633         uint32_t        handles[5];
 634         struct qla_hw_data *ha = vha->hw;
 635         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
 636         struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
 637         struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
 638         uint32_t        rscn_entry, host_pid;
 639         unsigned long   flags;
 640         fc_port_t       *fcport = NULL;
 641
 642         if (!vha->hw->flags.fw_started)
 643                 return;
 644
 645         /* Setup to process RIO completion. */
 646         handle_cnt = 0;
 647         if (IS_CNA_CAPABLE(ha))
 648                 goto skip_rio;
 649         switch (mb[0]) {
 650         case MBA_SCSI_COMPLETION:
 651                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 652                 handle_cnt = 1;
 653                 break;
 654         case MBA_CMPLT_1_16BIT:
 655                 handles[0] = mb[1];
 656                 handle_cnt = 1;
 657                 mb[0] = MBA_SCSI_COMPLETION;
 658                 break;
 659         case MBA_CMPLT_2_16BIT:
 660                 handles[0] = mb[1];
 661                 handles[1] = mb[2];
 662                 handle_cnt = 2;
 663                 mb[0] = MBA_SCSI_COMPLETION;
 664                 break;
 665         case MBA_CMPLT_3_16BIT:
 666                 handles[0] = mb[1];
 667                 handles[1] = mb[2];
 668                 handles[2] = mb[3];
 669                 handle_cnt = 3;
 670                 mb[0] = MBA_SCSI_COMPLETION;
 671                 break;
 672         case MBA_CMPLT_4_16BIT:
 673                 handles[0] = mb[1];
 674                 handles[1] = mb[2];
 675                 handles[2] = mb[3];
 676                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 677                 handle_cnt = 4;
 678                 mb[0] = MBA_SCSI_COMPLETION;
 679                 break;
 680         case MBA_CMPLT_5_16BIT:
 681                 handles[0] = mb[1];
 682                 handles[1] = mb[2];
 683                 handles[2] = mb[3];
 684                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 685                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 686                 handle_cnt = 5;
 687                 mb[0] = MBA_SCSI_COMPLETION;
 688                 break;
 689         case MBA_CMPLT_2_32BIT:
 690                 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
 691                 handles[1] = le32_to_cpu(
 692                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 693                     RD_MAILBOX_REG(ha, reg, 6));
 694                 handle_cnt = 2;
 695                 mb[0] = MBA_SCSI_COMPLETION;
 696                 break;
 697         default:
 698                 break;
 699         }
 700 skip_rio:
 701         switch (mb[0]) {
 702         case MBA_SCSI_COMPLETION:       /* Fast Post */
 703                 if (!vha->flags.online)
 704                         break;
 705
 706                 for (cnt = 0; cnt < handle_cnt; cnt++)
 707                         qla2x00_process_completed_request(vha, rsp->req,
 708                                 handles[cnt]);
 709                 break;
 710
 711         case MBA_RESET:                 /* Reset */
 712                 ql_dbg(ql_dbg_async, vha, 0x5002,
 713                     "Asynchronous RESET.\n");
 714
 715                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 716                 break;
 717
 718         case MBA_SYSTEM_ERR:            /* System Error */
 719                 mbx = (IS_QLA81XX(ha) || IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
 720                     IS_QLA28XX(ha)) ?
 721                         RD_REG_WORD(&reg24->mailbox7) : 0;
 722                 ql_log(ql_log_warn, vha, 0x5003,
 723                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
 724                     "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
 725                 ha->fw_dump_mpi =
 726                     (IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&
 727                     RD_REG_WORD(&reg24->mailbox7) & BIT_8;
 728                 ha->isp_ops->fw_dump(vha, 1);
 729                 ha->flags.fw_init_done = 0;
 730                 QLA_FW_STOPPED(ha);
 731
 732                 if (IS_FWI2_CAPABLE(ha)) {
 733                         if (mb[1] == 0 && mb[2] == 0) {
 734                                 ql_log(ql_log_fatal, vha, 0x5004,
 735                                     "Unrecoverable Hardware Error: adapter "
 736                                     "marked OFFLINE!\n");
 737                                 vha->flags.online = 0;
 738                                 vha->device_flags |= DFLG_DEV_FAILED;
 739                         } else {
 740                                 /* Check to see if MPI timeout occurred */
 741                                 if ((mbx & MBX_3) && (ha->port_no == 0))
 742                                         set_bit(MPI_RESET_NEEDED,
 743                                             &vha->dpc_flags);
 744
 745                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 746                         }
 747                 } else if (mb[1] == 0) {
 748                         ql_log(ql_log_fatal, vha, 0x5005,
 749                             "Unrecoverable Hardware Error: adapter marked "
 750                             "OFFLINE!\n");
 751                         vha->flags.online = 0;
 752                         vha->device_flags |= DFLG_DEV_FAILED;
 753                 } else
 754                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 755                 break;
 756
 757         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 758                 ql_log(ql_log_warn, vha, 0x5006,
 759                     "ISP Request Transfer Error (%x).\n",  mb[1]);
 760
 761                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 762                 break;
 763
 764         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 765                 ql_log(ql_log_warn, vha, 0x5007,
 766                     "ISP Response Transfer Error (%x).\n", mb[1]);
 767
 768                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 769                 break;
 770
 771         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 772                 ql_dbg(ql_dbg_async, vha, 0x5008,
 773                     "Asynchronous WAKEUP_THRES (%x).\n", mb[1]);
 774                 break;
 775
 776         case MBA_LOOP_INIT_ERR:
 777                 ql_log(ql_log_warn, vha, 0x5090,
 778                     "LOOP INIT ERROR (%x).\n", mb[1]);
 779                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
 780                 break;
 781
 782         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 783                 ha->flags.lip_ae = 1;
 784
 785                 ql_dbg(ql_dbg_async, vha, 0x5009,
 786                     "LIP occurred (%x).\n", mb[1]);
 787
 788                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 789                         atomic_set(&vha->loop_state, LOOP_DOWN);
 790                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 791                         qla2x00_mark_all_devices_lost(vha, 1);
 792                 }
 793
 794                 if (vha->vp_idx) {
 795                         atomic_set(&vha->vp_state, VP_FAILED);
 796                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 797                 }
 798
 799                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 800                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 801
 802                 vha->flags.management_server_logged_in = 0;
 803                 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
 804                 break;
 805
 806         case MBA_LOOP_UP:               /* Loop Up Event */
 807                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 808                         ha->link_data_rate = PORT_SPEED_1GB;
 809                 else
 810                         ha->link_data_rate = mb[1];
 811
 812                 ql_log(ql_log_info, vha, 0x500a,
 813                     "LOOP UP detected (%s Gbps).\n",
 814                     qla2x00_get_link_speed_str(ha, ha->link_data_rate));
 815
 816                 vha->flags.management_server_logged_in = 0;
 817                 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
 818
 819                 if (AUTO_DETECT_SFP_SUPPORT(vha)) {
 820                         set_bit(DETECT_SFP_CHANGE, &vha->dpc_flags);
 821                         qla2xxx_wake_dpc(vha);
 822                 }
 823                 break;
 824
 825         case MBA_LOOP_DOWN:             /* Loop Down Event */
 826                 SAVE_TOPO(ha);
 827                 ha->flags.lip_ae = 0;
 828                 ha->current_topology = 0;
 829
 830                 mbx = (IS_QLA81XX(ha) || IS_QLA8031(ha))
 831                         ? RD_REG_WORD(&reg24->mailbox4) : 0;
 832                 mbx = (IS_P3P_TYPE(ha)) ? RD_REG_WORD(&reg82->mailbox_out[4])
 833                         : mbx;
 834                 ql_log(ql_log_info, vha, 0x500b,
 835                     "LOOP DOWN detected (%x %x %x %x).\n",
 836                     mb[1], mb[2], mb[3], mbx);
 837
 838                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 839                         atomic_set(&vha->loop_state, LOOP_DOWN);
 840                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 841                         /*
 842                          * In case of loop down, restore WWPN from
 843                          * NVRAM in case of FA-WWPN capable ISP
 844                          * Restore for Physical Port only
 845                          */
 846                         if (!vha->vp_idx) {
 847                                 if (ha->flags.fawwpn_enabled &&
 848                                     (ha->current_topology == ISP_CFG_F)) {
 849                                         void *wwpn = ha->init_cb->port_name;
 850
 851                                         memcpy(vha->port_name, wwpn, WWN_SIZE);
 852                                         fc_host_port_name(vha->host) =
 853                                             wwn_to_u64(vha->port_name);
 854                                         ql_dbg(ql_dbg_init + ql_dbg_verbose,
 855                                             vha, 0x00d8, "LOOP DOWN detected,"
 856                                             "restore WWPN %016llx\n",
 857                                             wwn_to_u64(vha->port_name));
 858                                 }
 859
 860                                 clear_bit(VP_CONFIG_OK, &vha->vp_flags);
 861                         }
 862
 863                         vha->device_flags |= DFLG_NO_CABLE;
 864                         qla2x00_mark_all_devices_lost(vha, 1);
 865                 }
 866
 867                 if (vha->vp_idx) {
 868                         atomic_set(&vha->vp_state, VP_FAILED);
 869                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 870                 }
 871
 872                 vha->flags.management_server_logged_in = 0;
 873                 ha->link_data_rate = PORT_SPEED_UNKNOWN;
 874                 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
 875                 break;
 876
 877         case MBA_LIP_RESET:             /* LIP reset occurred */
 878                 ql_dbg(ql_dbg_async, vha, 0x500c,
 879                     "LIP reset occurred (%x).\n", mb[1]);
 880
 881                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 882                         atomic_set(&vha->loop_state, LOOP_DOWN);
 883                         atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
 884                         qla2x00_mark_all_devices_lost(vha, 1);
 885                 }
 886
 887                 if (vha->vp_idx) {
 888                         atomic_set(&vha->vp_state, VP_FAILED);
 889                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 890                 }
 891
 892                 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 893
 894                 ha->operating_mode = LOOP;
 895                 vha->flags.management_server_logged_in = 0;
 896                 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
 897                 break;
 898
 899         /* case MBA_DCBX_COMPLETE: */
 900         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 901                 ha->flags.lip_ae = 0;
 902
 903                 if (IS_QLA2100(ha))
 904                         break;
 905
 906                 if (IS_CNA_CAPABLE(ha)) {
 907                         ql_dbg(ql_dbg_async, vha, 0x500d,
 908                             "DCBX Completed -- %04x %04x %04x.\n",
 909                             mb[1], mb[2], mb[3]);
 910                         if (ha->notify_dcbx_comp && !vha->vp_idx)
 911                                 complete(&ha->dcbx_comp);
 912
 913                 } else
 914                         ql_dbg(ql_dbg_async, vha, 0x500e,
 915                             "Asynchronous P2P MODE received.\n");
 916
 917                 /*
 918                  * Until there's a transition from loop down to loop up, treat
 919                  * this as loop down only.
 920                  */
 921                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 922                         atomic_set(&vha->loop_state, LOOP_DOWN);
 923                         if (!atomic_read(&vha->loop_down_timer))
 924                                 atomic_set(&vha->loop_down_timer,
 925                                     LOOP_DOWN_TIME);
 926                         if (!N2N_TOPO(ha))
 927                                 qla2x00_mark_all_devices_lost(vha, 1);
 928                 }
 929
 930                 if (vha->vp_idx) {
 931                         atomic_set(&vha->vp_state, VP_FAILED);
 932                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 933                 }
 934
 935                 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
 936                         set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
 937
 938                 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
 939                 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
 940
 941                 vha->flags.management_server_logged_in = 0;
 942                 break;
 943
 944         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 945                 if (IS_QLA2100(ha))
 946                         break;
 947
 948                 ql_dbg(ql_dbg_async, vha, 0x500f,
 949                     "Configuration change detected: value=%x.\n", mb[1]);
 950
 951                 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
 952                         atomic_set(&vha->loop_state, LOOP_DOWN);
 953                         if (!atomic_read(&vha->loop_down_timer))
 954                                 atomic_set(&vha->loop_down_timer,
 955                                     LOOP_DOWN_TIME);
 956                         qla2x00_mark_all_devices_lost(vha, 1);
 957                 }
 958
 959                 if (vha->vp_idx) {
 960                         atomic_set(&vha->vp_state, VP_FAILED);
 961                         fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
 962                 }
 963
 964                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
 965                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
 966                 break;
 967
 968         case MBA_PORT_UPDATE:           /* Port database update */
 969                 /*
 970                  * Handle only global and vn-port update events
 971                  *
 972                  * Relevant inputs:
 973                  * mb[1] = N_Port handle of changed port
 974                  * OR 0xffff for global event
 975                  * mb[2] = New login state
 976                  * 7 = Port logged out
 977                  * mb[3] = LSB is vp_idx, 0xff = all vps
 978                  *
 979                  * Skip processing if:
 980                  *       Event is global, vp_idx is NOT all vps,
 981                  *           vp_idx does not match
 982                  *       Event is not global, vp_idx does not match
 983                  */
 984                 if (IS_QLA2XXX_MIDTYPE(ha) &&
 985                     ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
 986                         (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
 987                         break;
 988
 989                 if (mb[2] == 0x7) {
 990                         ql_dbg(ql_dbg_async, vha, 0x5010,
 991                             "Port %s %04x %04x %04x.\n",
 992                             mb[1] == 0xffff ? "unavailable" : "logout",
 993                             mb[1], mb[2], mb[3]);
 994
 995                         if (mb[1] == 0xffff)
 996                                 goto global_port_update;
 997
 998                         if (mb[1] == NPH_SNS_LID(ha)) {
 999                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1000                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1001                                 break;
1002                         }
1003
1004                         /* use handle_cnt for loop id/nport handle */
1005                         if (IS_FWI2_CAPABLE(ha))
1006                                 handle_cnt = NPH_SNS;
1007                         else
1008                                 handle_cnt = SIMPLE_NAME_SERVER;
1009                         if (mb[1] == handle_cnt) {
1010                                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1011                                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1012                                 break;
1013                         }
1014
1015                         /* Port logout */
1016                         fcport = qla2x00_find_fcport_by_loopid(vha, mb[1]);
1017                         if (!fcport)
1018                                 break;
1019                         if (atomic_read(&fcport->state) != FCS_ONLINE)
1020                                 break;
1021                         ql_dbg(ql_dbg_async, vha, 0x508a,
1022                             "Marking port lost loopid=%04x portid=%06x.\n",
1023                             fcport->loop_id, fcport->d_id.b24);
1024                         if (qla_ini_mode_enabled(vha)) {
1025                                 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1026                                 fcport->logout_on_delete = 0;
1027                                 qlt_schedule_sess_for_deletion(fcport);
1028                         }
1029                         break;
1030
1031 global_port_update:
1032                         if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
1033                                 atomic_set(&vha->loop_state, LOOP_DOWN);
1034                                 atomic_set(&vha->loop_down_timer,
1035                                     LOOP_DOWN_TIME);
1036                                 vha->device_flags |= DFLG_NO_CABLE;
1037                                 qla2x00_mark_all_devices_lost(vha, 1);
1038                         }
1039
1040                         if (vha->vp_idx) {
1041                                 atomic_set(&vha->vp_state, VP_FAILED);
1042                                 fc_vport_set_state(vha->fc_vport,
1043                                     FC_VPORT_FAILED);
1044                                 qla2x00_mark_all_devices_lost(vha, 1);
1045                         }
1046
1047                         vha->flags.management_server_logged_in = 0;
1048                         ha->link_data_rate = PORT_SPEED_UNKNOWN;
1049                         break;
1050                 }
1051
1052                 /*
1053                  * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
1054                  * event etc. earlier indicating loop is down) then process
1055                  * it.  Otherwise ignore it and Wait for RSCN to come in.
1056                  */
1057                 atomic_set(&vha->loop_down_timer, 0);
1058                 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
1059                         !ha->flags.n2n_ae  &&
1060                     atomic_read(&vha->loop_state) != LOOP_DEAD) {
1061                         ql_dbg(ql_dbg_async, vha, 0x5011,
1062                             "Asynchronous PORT UPDATE ignored %04x/%04x/%04x.\n",
1063                             mb[1], mb[2], mb[3]);
1064                         break;
1065                 }
1066
1067                 ql_dbg(ql_dbg_async, vha, 0x5012,
1068                     "Port database changed %04x %04x %04x.\n",
1069                     mb[1], mb[2], mb[3]);
1070
1071                 /*
1072                  * Mark all devices as missing so we will login again.
1073                  */
1074                 atomic_set(&vha->loop_state, LOOP_UP);
1075                 vha->scan.scan_retry = 0;
1076
1077                 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
1078                 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
1079                 set_bit(VP_CONFIG_OK, &vha->vp_flags);
1080                 break;
1081
1082         case MBA_RSCN_UPDATE:           /* State Change Registration */
1083                 /* Check if the Vport has issued a SCR */
1084                 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
1085                         break;
1086                 /* Only handle SCNs for our Vport index. */
1087                 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
1088                         break;
1089
1090                 ql_dbg(ql_dbg_async, vha, 0x5013,
1091                     "RSCN database changed -- %04x %04x %04x.\n",
1092                     mb[1], mb[2], mb[3]);
1093
1094                 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
1095                 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
1096                                 | vha->d_id.b.al_pa;
1097                 if (rscn_entry == host_pid) {
1098                         ql_dbg(ql_dbg_async, vha, 0x5014,
1099                             "Ignoring RSCN update to local host "
1100                             "port ID (%06x).\n", host_pid);
1101                         break;
1102                 }
1103
1104                 /* Ignore reserved bits from RSCN-payload. */
1105                 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
1106
1107                 /* Skip RSCNs for virtual ports on the same physical port */
1108                 if (qla2x00_is_a_vp_did(vha, rscn_entry))
1109                         break;
1110
1111                 atomic_set(&vha->loop_down_timer, 0);
1112                 vha->flags.management_server_logged_in = 0;
1113                 {
1114                         struct event_arg ea;
1115
1116                         memset(&ea, 0, sizeof(ea));
1117                         ea.id.b24 = rscn_entry;
1118                         ea.id.b.rsvd_1 = rscn_entry >> 24;
1119                         qla2x00_handle_rscn(vha, &ea);
1120                         qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
1121                 }
1122                 break;
1123         /* case MBA_RIO_RESPONSE: */
1124         case MBA_ZIO_RESPONSE:
1125                 ql_dbg(ql_dbg_async, vha, 0x5015,
1126                     "[R|Z]IO update completion.\n");
1127
1128                 if (IS_FWI2_CAPABLE(ha))
1129                         qla24xx_process_response_queue(vha, rsp);
1130                 else
1131                         qla2x00_process_response_queue(rsp);
1132                 break;
1133
1134         case MBA_DISCARD_RND_FRAME:
1135                 ql_dbg(ql_dbg_async, vha, 0x5016,
1136                     "Discard RND Frame -- %04x %04x %04x.\n",
1137                     mb[1], mb[2], mb[3]);
1138                 break;
1139
1140         case MBA_TRACE_NOTIFICATION:
1141                 ql_dbg(ql_dbg_async, vha, 0x5017,
1142                     "Trace Notification -- %04x %04x.\n", mb[1], mb[2]);
1143                 break;
1144
1145         case MBA_ISP84XX_ALERT:
1146                 ql_dbg(ql_dbg_async, vha, 0x5018,
1147                     "ISP84XX Alert Notification -- %04x %04x %04x.\n",
1148                     mb[1], mb[2], mb[3]);
1149
1150                 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
1151                 switch (mb[1]) {
1152                 case A84_PANIC_RECOVERY:
1153                         ql_log(ql_log_info, vha, 0x5019,
1154                             "Alert 84XX: panic recovery %04x %04x.\n",
1155                             mb[2], mb[3]);
1156                         break;
1157                 case A84_OP_LOGIN_COMPLETE:
1158                         ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
1159                         ql_log(ql_log_info, vha, 0x501a,
1160                             "Alert 84XX: firmware version %x.\n",
1161                             ha->cs84xx->op_fw_version);
1162                         break;
1163                 case A84_DIAG_LOGIN_COMPLETE:
1164                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1165                         ql_log(ql_log_info, vha, 0x501b,
1166                             "Alert 84XX: diagnostic firmware version %x.\n",
1167                             ha->cs84xx->diag_fw_version);
1168                         break;
1169                 case A84_GOLD_LOGIN_COMPLETE:
1170                         ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
1171                         ha->cs84xx->fw_update = 1;
1172                         ql_log(ql_log_info, vha, 0x501c,
1173                             "Alert 84XX: gold firmware version %x.\n",
1174                             ha->cs84xx->gold_fw_version);
1175                         break;
1176                 default:
1177                         ql_log(ql_log_warn, vha, 0x501d,
1178                             "Alert 84xx: Invalid Alert %04x %04x %04x.\n",
1179                             mb[1], mb[2], mb[3]);
1180                 }
1181                 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
1182                 break;
1183         case MBA_DCBX_START:
1184                 ql_dbg(ql_dbg_async, vha, 0x501e,
1185                     "DCBX Started -- %04x %04x %04x.\n",
1186                     mb[1], mb[2], mb[3]);
1187                 break;
1188         case MBA_DCBX_PARAM_UPDATE:
1189                 ql_dbg(ql_dbg_async, vha, 0x501f,
1190                     "DCBX Parameters Updated -- %04x %04x %04x.\n",
1191                     mb[1], mb[2], mb[3]);
1192                 break;
1193         case MBA_FCF_CONF_ERR:
1194                 ql_dbg(ql_dbg_async, vha, 0x5020,
1195                     "FCF Configuration Error -- %04x %04x %04x.\n",
1196                     mb[1], mb[2], mb[3]);
1197                 break;
1198         case MBA_IDC_NOTIFY:
1199                 if (IS_QLA8031(vha->hw) || IS_QLA8044(ha)) {
1200                         mb[4] = RD_REG_WORD(&reg24->mailbox4);
1201                         if (((mb[2] & 0x7fff) == MBC_PORT_RESET ||
1202                             (mb[2] & 0x7fff) == MBC_SET_PORT_CONFIG) &&
1203                             (mb[4] & INTERNAL_LOOPBACK_MASK) != 0) {
1204                                 set_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags);
1205                                 /*
1206                                  * Extend loop down timer since port is active.
1207                                  */
1208                                 if (atomic_read(&vha->loop_state) == LOOP_DOWN)
1209                                         atomic_set(&vha->loop_down_timer,
1210                                             LOOP_DOWN_TIME);
1211                                 qla2xxx_wake_dpc(vha);
1212                         }
1213                 }
1214                 /* fall through */
1215         case MBA_IDC_COMPLETE:
1216                 if (ha->notify_lb_portup_comp && !vha->vp_idx)
1217                         complete(&ha->lb_portup_comp);
1218                 /* Fallthru */
1219         case MBA_IDC_TIME_EXT:
1220                 if (IS_QLA81XX(vha->hw) || IS_QLA8031(vha->hw) ||
1221                     IS_QLA8044(ha))
1222                         qla81xx_idc_event(vha, mb[0], mb[1]);
1223                 break;
1224
1225         case MBA_IDC_AEN:
1226                 mb[4] = RD_REG_WORD(&reg24->mailbox4);
1227                 mb[5] = RD_REG_WORD(&reg24->mailbox5);
1228                 mb[6] = RD_REG_WORD(&reg24->mailbox6);
1229                 mb[7] = RD_REG_WORD(&reg24->mailbox7);
1230                 qla83xx_handle_8200_aen(vha, mb);
1231                 break;
1232
1233         case MBA_DPORT_DIAGNOSTICS:
1234                 ql_dbg(ql_dbg_async, vha, 0x5052,
1235                     "D-Port Diagnostics: %04x result=%s\n",
1236                     mb[0],
1237                     mb[1] == 0 ? "start" :
1238                     mb[1] == 1 ? "done (pass)" :
1239                     mb[1] == 2 ? "done (error)" : "other");
1240                 break;
1241
1242         case MBA_TEMPERATURE_ALERT:
1243                 ql_dbg(ql_dbg_async, vha, 0x505e,
1244                     "TEMPERATURE ALERT: %04x %04x %04x\n", mb[1], mb[2], mb[3]);
1245                 if (mb[1] == 0x12)
1246                         schedule_work(&ha->board_disable);
1247                 break;
1248
1249         case MBA_TRANS_INSERT:
1250                 ql_dbg(ql_dbg_async, vha, 0x5091,
1251                     "Transceiver Insertion: %04x\n", mb[1]);
1252                 break;
1253
1254         default:
1255                 ql_dbg(ql_dbg_async, vha, 0x5057,
1256                     "Unknown AEN:%04x %04x %04x %04x\n",
1257                     mb[0], mb[1], mb[2], mb[3]);
1258         }
1259
1260         qlt_async_event(mb[0], vha, mb);
1261
1262         if (!vha->vp_idx && ha->num_vhosts)
1263                 qla2x00_alert_all_vps(rsp, mb);
1264 }
1265
1266 /**
1267  * qla2x00_process_completed_request() - Process a Fast Post response.
1268  * @vha: SCSI driver HA context
1269  * @req: request queue
1270  * @index: SRB index
1271  */
1272 void
1273 qla2x00_process_completed_request(struct scsi_qla_host *vha,
1274                                   struct req_que *req, uint32_t index)
1275 {
1276         srb_t *sp;
1277         struct qla_hw_data *ha = vha->hw;
1278
1279         /* Validate handle. */
1280         if (index >= req->num_outstanding_cmds) {
1281                 ql_log(ql_log_warn, vha, 0x3014,
1282                     "Invalid SCSI command index (%x).\n", index);
1283
1284                 if (IS_P3P_TYPE(ha))
1285                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1286                 else
1287                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1288                 return;
1289         }
1290
1291         sp = req->outstanding_cmds[index];
1292         if (sp) {
1293                 /* Free outstanding command slot. */
1294                 req->outstanding_cmds[index] = NULL;
1295
1296                 /* Save ISP completion status */
1297                 sp->done(sp, DID_OK << 16);
1298         } else {
1299                 ql_log(ql_log_warn, vha, 0x3016, "Invalid SCSI SRB.\n");
1300
1301                 if (IS_P3P_TYPE(ha))
1302                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1303                 else
1304                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1305         }
1306 }
1307
1308 srb_t *
1309 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
1310     struct req_que *req, void *iocb)
1311 {
1312         struct qla_hw_data *ha = vha->hw;
1313         sts_entry_t *pkt = iocb;
1314         srb_t *sp = NULL;
1315         uint16_t index;
1316
1317         index = LSW(pkt->handle);
1318         if (index >= req->num_outstanding_cmds) {
1319                 ql_log(ql_log_warn, vha, 0x5031,
1320                            "Invalid command index (%x) type %8ph.\n",
1321                            index, iocb);
1322                 if (IS_P3P_TYPE(ha))
1323                         set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1324                 else
1325                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1326                 goto done;
1327         }
1328         sp = req->outstanding_cmds[index];
1329         if (!sp) {
1330                 ql_log(ql_log_warn, vha, 0x5032,
1331                     "Invalid completion handle (%x) -- timed-out.\n", index);
1332                 return sp;
1333         }
1334         if (sp->handle != index) {
1335                 ql_log(ql_log_warn, vha, 0x5033,
1336                     "SRB handle (%x) mismatch %x.\n", sp->handle, index);
1337                 return NULL;
1338         }
1339
1340         req->outstanding_cmds[index] = NULL;
1341
1342 done:
1343         return sp;
1344 }
1345
1346 static void
1347 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1348     struct mbx_entry *mbx)
1349 {
1350         const char func[] = "MBX-IOCB";
1351         const char *type;
1352         fc_port_t *fcport;
1353         srb_t *sp;
1354         struct srb_iocb *lio;
1355         uint16_t *data;
1356         uint16_t status;
1357
1358         sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
1359         if (!sp)
1360                 return;
1361
1362         lio = &sp->u.iocb_cmd;
1363         type = sp->name;
1364         fcport = sp->fcport;
1365         data = lio->u.logio.data;
1366
1367         data[0] = MBS_COMMAND_ERROR;
1368         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1369             QLA_LOGIO_LOGIN_RETRIED : 0;
1370         if (mbx->entry_status) {
1371                 ql_dbg(ql_dbg_async, vha, 0x5043,
1372                     "Async-%s error entry - hdl=%x portid=%02x%02x%02x "
1373                     "entry-status=%x status=%x state-flag=%x "
1374                     "status-flags=%x.\n", type, sp->handle,
1375                     fcport->d_id.b.domain, fcport->d_id.b.area,
1376                     fcport->d_id.b.al_pa, mbx->entry_status,
1377                     le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
1378                     le16_to_cpu(mbx->status_flags));
1379
1380                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5029,
1381                     mbx, sizeof(*mbx));
1382
1383                 goto logio_done;
1384         }
1385
1386         status = le16_to_cpu(mbx->status);
1387         if (status == 0x30 && sp->type == SRB_LOGIN_CMD &&
1388             le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
1389                 status = 0;
1390         if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1391                 ql_dbg(ql_dbg_async, vha, 0x5045,
1392                     "Async-%s complete - hdl=%x portid=%02x%02x%02x mbx1=%x.\n",
1393                     type, sp->handle, fcport->d_id.b.domain,
1394                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1395                     le16_to_cpu(mbx->mb1));
1396
1397                 data[0] = MBS_COMMAND_COMPLETE;
1398                 if (sp->type == SRB_LOGIN_CMD) {
1399                         fcport->port_type = FCT_TARGET;
1400                         if (le16_to_cpu(mbx->mb1) & BIT_0)
1401                                 fcport->port_type = FCT_INITIATOR;
1402                         else if (le16_to_cpu(mbx->mb1) & BIT_1)
1403                                 fcport->flags |= FCF_FCP2_DEVICE;
1404                 }
1405                 goto logio_done;
1406         }
1407
1408         data[0] = le16_to_cpu(mbx->mb0);
1409         switch (data[0]) {
1410         case MBS_PORT_ID_USED:
1411                 data[1] = le16_to_cpu(mbx->mb1);
1412                 break;
1413         case MBS_LOOP_ID_USED:
1414                 break;
1415         default:
1416                 data[0] = MBS_COMMAND_ERROR;
1417                 break;
1418         }
1419
1420         ql_log(ql_log_warn, vha, 0x5046,
1421             "Async-%s failed - hdl=%x portid=%02x%02x%02x status=%x "
1422             "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n", type, sp->handle,
1423             fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa,
1424             status, le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1425             le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1426             le16_to_cpu(mbx->mb7));
1427
1428 logio_done:
1429         sp->done(sp, 0);
1430 }
1431
1432 static void
1433 qla24xx_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1434     struct mbx_24xx_entry *pkt)
1435 {
1436         const char func[] = "MBX-IOCB2";
1437         srb_t *sp;
1438         struct srb_iocb *si;
1439         u16 sz, i;
1440         int res;
1441
1442         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1443         if (!sp)
1444                 return;
1445
1446         si = &sp->u.iocb_cmd;
1447         sz = min(ARRAY_SIZE(pkt->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.in_mb));
1448
1449         for (i = 0; i < sz; i++)
1450                 si->u.mbx.in_mb[i] = le16_to_cpu(pkt->mb[i]);
1451
1452         res = (si->u.mbx.in_mb[0] & MBS_MASK);
1453
1454         sp->done(sp, res);
1455 }
1456
1457 static void
1458 qla24xxx_nack_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1459     struct nack_to_isp *pkt)
1460 {
1461         const char func[] = "nack";
1462         srb_t *sp;
1463         int res = 0;
1464
1465         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1466         if (!sp)
1467                 return;
1468
1469         if (pkt->u.isp2x.status != cpu_to_le16(NOTIFY_ACK_SUCCESS))
1470                 res = QLA_FUNCTION_FAILED;
1471
1472         sp->done(sp, res);
1473 }
1474
1475 static void
1476 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1477     sts_entry_t *pkt, int iocb_type)
1478 {
1479         const char func[] = "CT_IOCB";
1480         const char *type;
1481         srb_t *sp;
1482         struct bsg_job *bsg_job;
1483         struct fc_bsg_reply *bsg_reply;
1484         uint16_t comp_status;
1485         int res = 0;
1486
1487         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1488         if (!sp)
1489                 return;
1490
1491         switch (sp->type) {
1492         case SRB_CT_CMD:
1493             bsg_job = sp->u.bsg_job;
1494             bsg_reply = bsg_job->reply;
1495
1496             type = "ct pass-through";
1497
1498             comp_status = le16_to_cpu(pkt->comp_status);
1499
1500             /*
1501              * return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1502              * fc payload  to the caller
1503              */
1504             bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1505             bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1506
1507             if (comp_status != CS_COMPLETE) {
1508                     if (comp_status == CS_DATA_UNDERRUN) {
1509                             res = DID_OK << 16;
1510                             bsg_reply->reply_payload_rcv_len =
1511                                 le16_to_cpu(pkt->rsp_info_len);
1512
1513                             ql_log(ql_log_warn, vha, 0x5048,
1514                                 "CT pass-through-%s error comp_status=0x%x total_byte=0x%x.\n",
1515                                 type, comp_status,
1516                                 bsg_reply->reply_payload_rcv_len);
1517                     } else {
1518                             ql_log(ql_log_warn, vha, 0x5049,
1519                                 "CT pass-through-%s error comp_status=0x%x.\n",
1520                                 type, comp_status);
1521                             res = DID_ERROR << 16;
1522                             bsg_reply->reply_payload_rcv_len = 0;
1523                     }
1524                     ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x5035,
1525                         pkt, sizeof(*pkt));
1526             } else {
1527                     res = DID_OK << 16;
1528                     bsg_reply->reply_payload_rcv_len =
1529                         bsg_job->reply_payload.payload_len;
1530                     bsg_job->reply_len = 0;
1531             }
1532             break;
1533         case SRB_CT_PTHRU_CMD:
1534             /*
1535              * borrowing sts_entry_24xx.comp_status.
1536              * same location as ct_entry_24xx.comp_status
1537              */
1538              res = qla2x00_chk_ms_status(vha, (ms_iocb_entry_t *)pkt,
1539                  (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1540                  sp->name);
1541              break;
1542         }
1543
1544         sp->done(sp, res);
1545 }
1546
1547 static void
1548 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1549     struct sts_entry_24xx *pkt, int iocb_type)
1550 {
1551         const char func[] = "ELS_CT_IOCB";
1552         const char *type;
1553         srb_t *sp;
1554         struct bsg_job *bsg_job;
1555         struct fc_bsg_reply *bsg_reply;
1556         uint16_t comp_status;
1557         uint32_t fw_status[3];
1558         int res;
1559         struct srb_iocb *els;
1560
1561         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1562         if (!sp)
1563                 return;
1564
1565         type = NULL;
1566         switch (sp->type) {
1567         case SRB_ELS_CMD_RPT:
1568         case SRB_ELS_CMD_HST:
1569                 type = "els";
1570                 break;
1571         case SRB_CT_CMD:
1572                 type = "ct pass-through";
1573                 break;
1574         case SRB_ELS_DCMD:
1575                 type = "Driver ELS logo";
1576                 if (iocb_type != ELS_IOCB_TYPE) {
1577                         ql_dbg(ql_dbg_user, vha, 0x5047,
1578                             "Completing %s: (%p) type=%d.\n",
1579                             type, sp, sp->type);
1580                         sp->done(sp, 0);
1581                         return;
1582                 }
1583                 break;
1584         case SRB_CT_PTHRU_CMD:
1585                 /* borrowing sts_entry_24xx.comp_status.
1586                    same location as ct_entry_24xx.comp_status
1587                  */
1588                 res = qla2x00_chk_ms_status(sp->vha, (ms_iocb_entry_t *)pkt,
1589                         (struct ct_sns_rsp *)sp->u.iocb_cmd.u.ctarg.rsp,
1590                         sp->name);
1591                 sp->done(sp, res);
1592                 return;
1593         default:
1594                 ql_dbg(ql_dbg_user, vha, 0x503e,
1595                     "Unrecognized SRB: (%p) type=%d.\n", sp, sp->type);
1596                 return;
1597         }
1598
1599         comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1600         fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_1);
1601         fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->error_subcode_2);
1602
1603         if (iocb_type == ELS_IOCB_TYPE) {
1604                 els = &sp->u.iocb_cmd;
1605                 els->u.els_plogi.fw_status[0] = fw_status[0];
1606                 els->u.els_plogi.fw_status[1] = fw_status[1];
1607                 els->u.els_plogi.fw_status[2] = fw_status[2];
1608                 els->u.els_plogi.comp_status = fw_status[0];
1609                 if (comp_status == CS_COMPLETE) {
1610                         res =  DID_OK << 16;
1611                 } else {
1612                         if (comp_status == CS_DATA_UNDERRUN) {
1613                                 res =  DID_OK << 16;
1614                                 els->u.els_plogi.len =
1615                                 le16_to_cpu(((struct els_sts_entry_24xx *)
1616                                         pkt)->total_byte_count);
1617                         } else {
1618                                 els->u.els_plogi.len = 0;
1619                                 res = DID_ERROR << 16;
1620                         }
1621                 }
1622                 ql_dbg(ql_dbg_user, vha, 0x503f,
1623                     "ELS IOCB Done -%s error hdl=%x comp_status=0x%x error subcode 1=0x%x error subcode 2=0x%x total_byte=0x%x\n",
1624                     type, sp->handle, comp_status, fw_status[1], fw_status[2],
1625                     le16_to_cpu(((struct els_sts_entry_24xx *)
1626                         pkt)->total_byte_count));
1627                 goto els_ct_done;
1628         }
1629
1630         /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1631          * fc payload  to the caller
1632          */
1633         bsg_job = sp->u.bsg_job;
1634         bsg_reply = bsg_job->reply;
1635         bsg_reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1636         bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1637
1638         if (comp_status != CS_COMPLETE) {
1639                 if (comp_status == CS_DATA_UNDERRUN) {
1640                         res = DID_OK << 16;
1641                         bsg_reply->reply_payload_rcv_len =
1642                             le16_to_cpu(((struct els_sts_entry_24xx *)pkt)->total_byte_count);
1643
1644                         ql_dbg(ql_dbg_user, vha, 0x503f,
1645                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1646                             "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1647                             type, sp->handle, comp_status, fw_status[1], fw_status[2],
1648                             le16_to_cpu(((struct els_sts_entry_24xx *)
1649                                 pkt)->total_byte_count));
1650                 } else {
1651                         ql_dbg(ql_dbg_user, vha, 0x5040,
1652                             "ELS-CT pass-through-%s error hdl=%x comp_status-status=0x%x "
1653                             "error subcode 1=0x%x error subcode 2=0x%x.\n",
1654                             type, sp->handle, comp_status,
1655                             le16_to_cpu(((struct els_sts_entry_24xx *)
1656                                 pkt)->error_subcode_1),
1657                             le16_to_cpu(((struct els_sts_entry_24xx *)
1658                                     pkt)->error_subcode_2));
1659                         res = DID_ERROR << 16;
1660                         bsg_reply->reply_payload_rcv_len = 0;
1661                 }
1662                 memcpy(bsg_job->reply + sizeof(struct fc_bsg_reply),
1663                        fw_status, sizeof(fw_status));
1664                 ql_dump_buffer(ql_dbg_user + ql_dbg_buffer, vha, 0x5056,
1665                     pkt, sizeof(*pkt));
1666         }
1667         else {
1668                 res =  DID_OK << 16;
1669                 bsg_reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1670                 bsg_job->reply_len = 0;
1671         }
1672 els_ct_done:
1673
1674         sp->done(sp, res);
1675 }
1676
1677 static void
1678 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1679     struct logio_entry_24xx *logio)
1680 {
1681         const char func[] = "LOGIO-IOCB";
1682         const char *type;
1683         fc_port_t *fcport;
1684         srb_t *sp;
1685         struct srb_iocb *lio;
1686         uint16_t *data;
1687         uint32_t iop[2];
1688
1689         sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1690         if (!sp)
1691                 return;
1692
1693         lio = &sp->u.iocb_cmd;
1694         type = sp->name;
1695         fcport = sp->fcport;
1696         data = lio->u.logio.data;
1697
1698         data[0] = MBS_COMMAND_ERROR;
1699         data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1700                 QLA_LOGIO_LOGIN_RETRIED : 0;
1701         if (logio->entry_status) {
1702                 ql_log(ql_log_warn, fcport->vha, 0x5034,
1703                     "Async-%s error entry - %8phC hdl=%x"
1704                     "portid=%02x%02x%02x entry-status=%x.\n",
1705                     type, fcport->port_name, sp->handle, fcport->d_id.b.domain,
1706                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1707                     logio->entry_status);
1708                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, vha, 0x504d,
1709                     logio, sizeof(*logio));
1710
1711                 goto logio_done;
1712         }
1713
1714         if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1715                 ql_dbg(ql_dbg_async, fcport->vha, 0x5036,
1716                     "Async-%s complete - %8phC hdl=%x portid=%02x%02x%02x "
1717                     "iop0=%x.\n", type, fcport->port_name, sp->handle,
1718                     fcport->d_id.b.domain,
1719                     fcport->d_id.b.area, fcport->d_id.b.al_pa,
1720                     le32_to_cpu(logio->io_parameter[0]));
1721
1722                 vha->hw->exch_starvation = 0;
1723                 data[0] = MBS_COMMAND_COMPLETE;
1724
1725                 if (sp->type == SRB_PRLI_CMD) {
1726                         lio->u.logio.iop[0] =
1727                             le32_to_cpu(logio->io_parameter[0]);
1728                         lio->u.logio.iop[1] =
1729                             le32_to_cpu(logio->io_parameter[1]);
1730                         goto logio_done;
1731                 }
1732
1733                 if (sp->type != SRB_LOGIN_CMD)
1734                         goto logio_done;
1735
1736                 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1737                 if (iop[0] & BIT_4) {
1738                         fcport->port_type = FCT_TARGET;
1739                         if (iop[0] & BIT_8)
1740                                 fcport->flags |= FCF_FCP2_DEVICE;
1741                 } else if (iop[0] & BIT_5)
1742                         fcport->port_type = FCT_INITIATOR;
1743
1744                 if (iop[0] & BIT_7)
1745                         fcport->flags |= FCF_CONF_COMP_SUPPORTED;
1746
1747                 if (logio->io_parameter[7] || logio->io_parameter[8])
1748                         fcport->supported_classes |= FC_COS_CLASS2;
1749                 if (logio->io_parameter[9] || logio->io_parameter[10])
1750                         fcport->supported_classes |= FC_COS_CLASS3;
1751
1752                 goto logio_done;
1753         }
1754
1755         iop[0] = le32_to_cpu(logio->io_parameter[0]);
1756         iop[1] = le32_to_cpu(logio->io_parameter[1]);
1757         lio->u.logio.iop[0] = iop[0];
1758         lio->u.logio.iop[1] = iop[1];
1759         switch (iop[0]) {
1760         case LSC_SCODE_PORTID_USED:
1761                 data[0] = MBS_PORT_ID_USED;
1762                 data[1] = LSW(iop[1]);
1763                 break;
1764         case LSC_SCODE_NPORT_USED:
1765                 data[0] = MBS_LOOP_ID_USED;
1766                 break;
1767         case LSC_SCODE_CMD_FAILED:
1768                 if (iop[1] == 0x0606) {
1769                         /*
1770                          * PLOGI/PRLI Completed. We must have Recv PLOGI/PRLI,
1771                          * Target side acked.
1772                          */
1773                         data[0] = MBS_COMMAND_COMPLETE;
1774                         goto logio_done;
1775                 }
1776                 data[0] = MBS_COMMAND_ERROR;
1777                 break;
1778         case LSC_SCODE_NOXCB:
1779                 vha->hw->exch_starvation++;
1780                 if (vha->hw->exch_starvation > 5) {
1781                         ql_log(ql_log_warn, vha, 0xd046,
1782                             "Exchange starvation. Resetting RISC\n");
1783
1784                         vha->hw->exch_starvation = 0;
1785
1786                         if (IS_P3P_TYPE(vha->hw))
1787                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
1788                         else
1789                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1790                         qla2xxx_wake_dpc(vha);
1791                 }
1792                 /* fall through */
1793         default:
1794                 data[0] = MBS_COMMAND_ERROR;
1795                 break;
1796         }
1797
1798         ql_dbg(ql_dbg_async, fcport->vha, 0x5037,
1799             "Async-%s failed - %8phC hdl=%x portid=%02x%02x%02x comp=%x "
1800             "iop0=%x iop1=%x.\n", type, fcport->port_name,
1801                 sp->handle, fcport->d_id.b.domain,
1802             fcport->d_id.b.area, fcport->d_id.b.al_pa,
1803             le16_to_cpu(logio->comp_status),
1804             le32_to_cpu(logio->io_parameter[0]),
1805             le32_to_cpu(logio->io_parameter[1]));
1806
1807 logio_done:
1808         sp->done(sp, 0);
1809 }
1810
1811 static void
1812 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
1813 {
1814         const char func[] = "TMF-IOCB";
1815         const char *type;
1816         fc_port_t *fcport;
1817         srb_t *sp;
1818         struct srb_iocb *iocb;
1819         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1820
1821         sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1822         if (!sp)
1823                 return;
1824
1825         iocb = &sp->u.iocb_cmd;
1826         type = sp->name;
1827         fcport = sp->fcport;
1828         iocb->u.tmf.data = QLA_SUCCESS;
1829
1830         if (sts->entry_status) {
1831                 ql_log(ql_log_warn, fcport->vha, 0x5038,
1832                     "Async-%s error - hdl=%x entry-status(%x).\n",
1833                     type, sp->handle, sts->entry_status);
1834                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1835         } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
1836                 ql_log(ql_log_warn, fcport->vha, 0x5039,
1837                     "Async-%s error - hdl=%x completion status(%x).\n",
1838                     type, sp->handle, sts->comp_status);
1839                 iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1840         } else if ((le16_to_cpu(sts->scsi_status) &
1841             SS_RESPONSE_INFO_LEN_VALID)) {
1842                 host_to_fcp_swap(sts->data, sizeof(sts->data));
1843                 if (le32_to_cpu(sts->rsp_data_len) < 4) {
1844                         ql_log(ql_log_warn, fcport->vha, 0x503b,
1845                             "Async-%s error - hdl=%x not enough response(%d).\n",
1846                             type, sp->handle, sts->rsp_data_len);
1847                 } else if (sts->data[3]) {
1848                         ql_log(ql_log_warn, fcport->vha, 0x503c,
1849                             "Async-%s error - hdl=%x response(%x).\n",
1850                             type, sp->handle, sts->data[3]);
1851                         iocb->u.tmf.data = QLA_FUNCTION_FAILED;
1852                 }
1853         }
1854
1855         if (iocb->u.tmf.data != QLA_SUCCESS)
1856                 ql_dump_buffer(ql_dbg_async + ql_dbg_buffer, sp->vha, 0x5055,
1857                     sts, sizeof(*sts));
1858
1859         sp->done(sp, 0);
1860 }
1861
1862 static void qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1863     void *tsk, srb_t *sp)
1864 {
1865         fc_port_t *fcport;
1866         struct srb_iocb *iocb;
1867         struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1868         uint16_t        state_flags;
1869         struct nvmefc_fcp_req *fd;
1870         uint16_t        ret = QLA_SUCCESS;
1871         uint16_t        comp_status = le16_to_cpu(sts->comp_status);
1872
1873         iocb = &sp->u.iocb_cmd;
1874         fcport = sp->fcport;
1875         iocb->u.nvme.comp_status = comp_status;
1876         state_flags  = le16_to_cpu(sts->state_flags);
1877         fd = iocb->u.nvme.desc;
1878
1879         if (unlikely(iocb->u.nvme.aen_op))
1880                 atomic_dec(&sp->vha->hw->nvme_active_aen_cnt);
1881
1882         /*
1883          * State flags: Bit 6 and 0.
1884          * If 0 is set, we don't care about 6.
1885          * both cases resp was dma'd to host buffer
1886          * if both are 0, that is good path case.
1887          * if six is set and 0 is clear, we need to
1888          * copy resp data from status iocb to resp buffer.
1889          */
1890         if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
1891                 iocb->u.nvme.rsp_pyld_len = 0;
1892         } else if ((state_flags & SF_FCP_RSP_DMA)) {
1893                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1894         } else if (state_flags & SF_NVME_ERSP) {
1895                 uint32_t *inbuf, *outbuf;
1896                 uint16_t iter;
1897
1898                 inbuf = (uint32_t *)&sts->nvme_ersp_data;
1899                 outbuf = (uint32_t *)fd->rspaddr;
1900                 iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
1901                 if (unlikely(iocb->u.nvme.rsp_pyld_len >
1902                     sizeof(struct nvme_fc_ersp_iu))) {
1903                         if (ql_mask_match(ql_dbg_io)) {
1904                                 WARN_ONCE(1, "Unexpected response payload length %u.\n",
1905                                     iocb->u.nvme.rsp_pyld_len);
1906                                 ql_log(ql_log_warn, fcport->vha, 0x5100,
1907                                     "Unexpected response payload length %u.\n",
1908                                     iocb->u.nvme.rsp_pyld_len);
1909                         }
1910                         iocb->u.nvme.rsp_pyld_len =
1911                             sizeof(struct nvme_fc_ersp_iu);
1912                 }
1913                 iter = iocb->u.nvme.rsp_pyld_len >> 2;
1914                 for (; iter; iter--)
1915                         *outbuf++ = swab32(*inbuf++);
1916         } else { /* unhandled case */
1917             ql_log(ql_log_warn, fcport->vha, 0x503a,
1918                 "NVME-%s error. Unhandled state_flags of %x\n",
1919                 sp->name, state_flags);
1920         }
1921
1922         fd->transferred_length = fd->payload_length -
1923             le32_to_cpu(sts->residual_len);
1924
1925         if (unlikely(comp_status != CS_COMPLETE))
1926                 ql_log(ql_log_warn, fcport->vha, 0x5060,
1927                    "NVME-%s ERR Handling - hdl=%x status(%x) tr_len:%x resid=%x  ox_id=%x\n",
1928                    sp->name, sp->handle, comp_status,
1929                    fd->transferred_length, le32_to_cpu(sts->residual_len),
1930                    sts->ox_id);
1931
1932         /*
1933          * If transport error then Failure (HBA rejects request)
1934          * otherwise transport will handle.
1935          */
1936         switch (comp_status) {
1937         case CS_COMPLETE:
1938                 break;
1939
1940         case CS_RESET:
1941         case CS_PORT_UNAVAILABLE:
1942         case CS_PORT_LOGGED_OUT:
1943                 fcport->nvme_flag |= NVME_FLAG_RESETTING;
1944                 /* fall through */
1945         case CS_ABORTED:
1946         case CS_PORT_BUSY:
1947                 fd->transferred_length = 0;
1948                 iocb->u.nvme.rsp_pyld_len = 0;
1949                 ret = QLA_ABORTED;
1950                 break;
1951         case CS_DATA_UNDERRUN:
1952                 break;
1953         default:
1954                 ret = QLA_FUNCTION_FAILED;
1955                 break;
1956         }
1957         sp->done(sp, ret);
1958 }
1959
1960 static void qla_ctrlvp_completed(scsi_qla_host_t *vha, struct req_que *req,
1961     struct vp_ctrl_entry_24xx *vce)
1962 {
1963         const char func[] = "CTRLVP-IOCB";
1964         srb_t *sp;
1965         int rval = QLA_SUCCESS;
1966
1967         sp = qla2x00_get_sp_from_handle(vha, func, req, vce);
1968         if (!sp)
1969                 return;
1970
1971         if (vce->entry_status != 0) {
1972                 ql_dbg(ql_dbg_vport, vha, 0x10c4,
1973                     "%s: Failed to complete IOCB -- error status (%x)\n",
1974                     sp->name, vce->entry_status);
1975                 rval = QLA_FUNCTION_FAILED;
1976         } else if (vce->comp_status != cpu_to_le16(CS_COMPLETE)) {
1977                 ql_dbg(ql_dbg_vport, vha, 0x10c5,
1978                     "%s: Failed to complete IOCB -- completion status (%x) vpidx %x\n",
1979                     sp->name, le16_to_cpu(vce->comp_status),
1980                     le16_to_cpu(vce->vp_idx_failed));
1981                 rval = QLA_FUNCTION_FAILED;
1982         } else {
1983                 ql_dbg(ql_dbg_vport, vha, 0x10c6,
1984                     "Done %s.\n", __func__);
1985         }
1986
1987         sp->rc = rval;
1988         sp->done(sp, rval);
1989 }
1990
1991 /* Process a single response queue entry. */
1992 static void qla2x00_process_response_entry(struct scsi_qla_host *vha,
1993                                            struct rsp_que *rsp,
1994                                            sts_entry_t *pkt)
1995 {
1996         sts21_entry_t *sts21_entry;
1997         sts22_entry_t *sts22_entry;
1998         uint16_t handle_cnt;
1999         uint16_t cnt;
2000
2001         switch (pkt->entry_type) {
2002         case STATUS_TYPE:
2003                 qla2x00_status_entry(vha, rsp, pkt);
2004                 break;
2005         case STATUS_TYPE_21:
2006                 sts21_entry = (sts21_entry_t *)pkt;
2007                 handle_cnt = sts21_entry->handle_count;
2008                 for (cnt = 0; cnt < handle_cnt; cnt++)
2009                         qla2x00_process_completed_request(vha, rsp->req,
2010                                                 sts21_entry->handle[cnt]);
2011                 break;
2012         case STATUS_TYPE_22:
2013                 sts22_entry = (sts22_entry_t *)pkt;
2014                 handle_cnt = sts22_entry->handle_count;
2015                 for (cnt = 0; cnt < handle_cnt; cnt++)
2016                         qla2x00_process_completed_request(vha, rsp->req,
2017                                                 sts22_entry->handle[cnt]);
2018                 break;
2019         case STATUS_CONT_TYPE:
2020                 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
2021                 break;
2022         case MBX_IOCB_TYPE:
2023                 qla2x00_mbx_iocb_entry(vha, rsp->req, (struct mbx_entry *)pkt);
2024                 break;
2025         case CT_IOCB_TYPE:
2026                 qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2027                 break;
2028         default:
2029                 /* Type Not Supported. */
2030                 ql_log(ql_log_warn, vha, 0x504a,
2031                        "Received unknown response pkt type %x entry status=%x.\n",
2032                        pkt->entry_type, pkt->entry_status);
2033                 break;
2034         }
2035 }
2036
2037 /**
2038  * qla2x00_process_response_queue() - Process response queue entries.
2039  * @rsp: response queue
2040  */
2041 void
2042 qla2x00_process_response_queue(struct rsp_que *rsp)
2043 {
2044         struct scsi_qla_host *vha;
2045         struct qla_hw_data *ha = rsp->hw;
2046         struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
2047         sts_entry_t     *pkt;
2048
2049         vha = pci_get_drvdata(ha->pdev);
2050
2051         if (!vha->flags.online)
2052                 return;
2053
2054         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
2055                 pkt = (sts_entry_t *)rsp->ring_ptr;
2056
2057                 rsp->ring_index++;
2058                 if (rsp->ring_index == rsp->length) {
2059                         rsp->ring_index = 0;
2060                         rsp->ring_ptr = rsp->ring;
2061                 } else {
2062                         rsp->ring_ptr++;
2063                 }
2064
2065                 if (pkt->entry_status != 0) {
2066                         qla2x00_error_entry(vha, rsp, pkt);
2067                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2068                         wmb();
2069                         continue;
2070                 }
2071
2072                 qla2x00_process_response_entry(vha, rsp, pkt);
2073                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2074                 wmb();
2075         }
2076
2077         /* Adjust ring index */
2078         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
2079 }
2080
2081 static inline void
2082 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
2083                      uint32_t sense_len, struct rsp_que *rsp, int res)
2084 {
2085         struct scsi_qla_host *vha = sp->vha;
2086         struct scsi_cmnd *cp = GET_CMD_SP(sp);
2087         uint32_t track_sense_len;
2088
2089         if (sense_len >= SCSI_SENSE_BUFFERSIZE)
2090                 sense_len = SCSI_SENSE_BUFFERSIZE;
2091
2092         SET_CMD_SENSE_LEN(sp, sense_len);
2093         SET_CMD_SENSE_PTR(sp, cp->sense_buffer);
2094         track_sense_len = sense_len;
2095
2096         if (sense_len > par_sense_len)
2097                 sense_len = par_sense_len;
2098
2099         memcpy(cp->sense_buffer, sense_data, sense_len);
2100
2101         SET_CMD_SENSE_PTR(sp, cp->sense_buffer + sense_len);
2102         track_sense_len -= sense_len;
2103         SET_CMD_SENSE_LEN(sp, track_sense_len);
2104
2105         if (track_sense_len != 0) {
2106                 rsp->status_srb = sp;
2107                 cp->result = res;
2108         }
2109
2110         if (sense_len) {
2111                 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x301c,
2112                     "Check condition Sense data, nexus%ld:%d:%llu cmd=%p.\n",
2113                     sp->vha->host_no, cp->device->id, cp->device->lun,
2114                     cp);
2115                 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302b,
2116                     cp->sense_buffer, sense_len);
2117         }
2118 }
2119
2120 struct scsi_dif_tuple {
2121         __be16 guard;       /* Checksum */
2122         __be16 app_tag;         /* APPL identifier */
2123         __be32 ref_tag;         /* Target LBA or indirect LBA */
2124 };
2125
2126 /*
2127  * Checks the guard or meta-data for the type of error
2128  * detected by the HBA. In case of errors, we set the
2129  * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
2130  * to indicate to the kernel that the HBA detected error.
2131  */
2132 static inline int
2133 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
2134 {
2135         struct scsi_qla_host *vha = sp->vha;
2136         struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2137         uint8_t         *ap = &sts24->data[12];
2138         uint8_t         *ep = &sts24->data[20];
2139         uint32_t        e_ref_tag, a_ref_tag;
2140         uint16_t        e_app_tag, a_app_tag;
2141         uint16_t        e_guard, a_guard;
2142
2143         /*
2144          * swab32 of the "data" field in the beginning of qla2x00_status_entry()
2145          * would make guard field appear at offset 2
2146          */
2147         a_guard   = le16_to_cpu(*(uint16_t *)(ap + 2));
2148         a_app_tag = le16_to_cpu(*(uint16_t *)(ap + 0));
2149         a_ref_tag = le32_to_cpu(*(uint32_t *)(ap + 4));
2150         e_guard   = le16_to_cpu(*(uint16_t *)(ep + 2));
2151         e_app_tag = le16_to_cpu(*(uint16_t *)(ep + 0));
2152         e_ref_tag = le32_to_cpu(*(uint32_t *)(ep + 4));
2153
2154         ql_dbg(ql_dbg_io, vha, 0x3023,
2155             "iocb(s) %p Returned STATUS.\n", sts24);
2156
2157         ql_dbg(ql_dbg_io, vha, 0x3024,
2158             "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
2159             " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
2160             " tag=0x%x, act guard=0x%x, exp guard=0x%x.\n",
2161             cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
2162             a_app_tag, e_app_tag, a_guard, e_guard);
2163
2164         /*
2165          * Ignore sector if:
2166          * For type     3: ref & app tag is all 'f's
2167          * For type 0,1,2: app tag is all 'f's
2168          */
2169         if ((a_app_tag == T10_PI_APP_ESCAPE) &&
2170             ((scsi_get_prot_type(cmd) != SCSI_PROT_DIF_TYPE3) ||
2171              (a_ref_tag == T10_PI_REF_ESCAPE))) {
2172                 uint32_t blocks_done, resid;
2173                 sector_t lba_s = scsi_get_lba(cmd);
2174
2175                 /* 2TB boundary case covered automatically with this */
2176                 blocks_done = e_ref_tag - (uint32_t)lba_s + 1;
2177
2178                 resid = scsi_bufflen(cmd) - (blocks_done *
2179                     cmd->device->sector_size);
2180
2181                 scsi_set_resid(cmd, resid);
2182                 cmd->result = DID_OK << 16;
2183
2184                 /* Update protection tag */
2185                 if (scsi_prot_sg_count(cmd)) {
2186                         uint32_t i, j = 0, k = 0, num_ent;
2187                         struct scatterlist *sg;
2188                         struct t10_pi_tuple *spt;
2189
2190                         /* Patch the corresponding protection tags */
2191                         scsi_for_each_prot_sg(cmd, sg,
2192                             scsi_prot_sg_count(cmd), i) {
2193                                 num_ent = sg_dma_len(sg) / 8;
2194                                 if (k + num_ent < blocks_done) {
2195                                         k += num_ent;
2196                                         continue;
2197                                 }
2198                                 j = blocks_done - k - 1;
2199                                 k = blocks_done;
2200                                 break;
2201                         }
2202
2203                         if (k != blocks_done) {
2204                                 ql_log(ql_log_warn, vha, 0x302f,
2205                                     "unexpected tag values tag:lba=%x:%llx)\n",
2206                                     e_ref_tag, (unsigned long long)lba_s);
2207                                 return 1;
2208                         }
2209
2210                         spt = page_address(sg_page(sg)) + sg->offset;
2211                         spt += j;
2212
2213                         spt->app_tag = T10_PI_APP_ESCAPE;
2214                         if (scsi_get_prot_type(cmd) == SCSI_PROT_DIF_TYPE3)
2215                                 spt->ref_tag = T10_PI_REF_ESCAPE;
2216                 }
2217
2218                 return 0;
2219         }
2220
2221         /* check guard */
2222         if (e_guard != a_guard) {
2223                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2224                     0x10, 0x1);
2225                 set_driver_byte(cmd, DRIVER_SENSE);
2226                 set_host_byte(cmd, DID_ABORT);
2227                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2228                 return 1;
2229         }
2230
2231         /* check ref tag */
2232         if (e_ref_tag != a_ref_tag) {
2233                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2234                     0x10, 0x3);
2235                 set_driver_byte(cmd, DRIVER_SENSE);
2236                 set_host_byte(cmd, DID_ABORT);
2237                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2238                 return 1;
2239         }
2240
2241         /* check appl tag */
2242         if (e_app_tag != a_app_tag) {
2243                 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
2244                     0x10, 0x2);
2245                 set_driver_byte(cmd, DRIVER_SENSE);
2246                 set_host_byte(cmd, DID_ABORT);
2247                 cmd->result |= SAM_STAT_CHECK_CONDITION;
2248                 return 1;
2249         }
2250
2251         return 1;
2252 }
2253
2254 static void
2255 qla25xx_process_bidir_status_iocb(scsi_qla_host_t *vha, void *pkt,
2256                                   struct req_que *req, uint32_t index)
2257 {
2258         struct qla_hw_data *ha = vha->hw;
2259         srb_t *sp;
2260         uint16_t        comp_status;
2261         uint16_t        scsi_status;
2262         uint16_t thread_id;
2263         uint32_t rval = EXT_STATUS_OK;
2264         struct bsg_job *bsg_job = NULL;
2265         struct fc_bsg_request *bsg_request;
2266         struct fc_bsg_reply *bsg_reply;
2267         sts_entry_t *sts = pkt;
2268         struct sts_entry_24xx *sts24 = pkt;
2269
2270         /* Validate handle. */
2271         if (index >= req->num_outstanding_cmds) {
2272                 ql_log(ql_log_warn, vha, 0x70af,
2273                     "Invalid SCSI completion handle 0x%x.\n", index);
2274                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2275                 return;
2276         }
2277
2278         sp = req->outstanding_cmds[index];
2279         if (!sp) {
2280                 ql_log(ql_log_warn, vha, 0x70b0,
2281                     "Req:%d: Invalid ISP SCSI completion handle(0x%x)\n",
2282                     req->id, index);
2283
2284                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2285                 return;
2286         }
2287
2288         /* Free outstanding command slot. */
2289         req->outstanding_cmds[index] = NULL;
2290         bsg_job = sp->u.bsg_job;
2291         bsg_request = bsg_job->request;
2292         bsg_reply = bsg_job->reply;
2293
2294         if (IS_FWI2_CAPABLE(ha)) {
2295                 comp_status = le16_to_cpu(sts24->comp_status);
2296                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2297         } else {
2298                 comp_status = le16_to_cpu(sts->comp_status);
2299                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2300         }
2301
2302         thread_id = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
2303         switch (comp_status) {
2304         case CS_COMPLETE:
2305                 if (scsi_status == 0) {
2306                         bsg_reply->reply_payload_rcv_len =
2307                                         bsg_job->reply_payload.payload_len;
2308                         vha->qla_stats.input_bytes +=
2309                                 bsg_reply->reply_payload_rcv_len;
2310                         vha->qla_stats.input_requests++;
2311                         rval = EXT_STATUS_OK;
2312                 }
2313                 goto done;
2314
2315         case CS_DATA_OVERRUN:
2316                 ql_dbg(ql_dbg_user, vha, 0x70b1,
2317                     "Command completed with data overrun thread_id=%d\n",
2318                     thread_id);
2319                 rval = EXT_STATUS_DATA_OVERRUN;
2320                 break;
2321
2322         case CS_DATA_UNDERRUN:
2323                 ql_dbg(ql_dbg_user, vha, 0x70b2,
2324                     "Command completed with data underrun thread_id=%d\n",
2325                     thread_id);
2326                 rval = EXT_STATUS_DATA_UNDERRUN;
2327                 break;
2328         case CS_BIDIR_RD_OVERRUN:
2329                 ql_dbg(ql_dbg_user, vha, 0x70b3,
2330                     "Command completed with read data overrun thread_id=%d\n",
2331                     thread_id);
2332                 rval = EXT_STATUS_DATA_OVERRUN;
2333                 break;
2334
2335         case CS_BIDIR_RD_WR_OVERRUN:
2336                 ql_dbg(ql_dbg_user, vha, 0x70b4,
2337                     "Command completed with read and write data overrun "
2338                     "thread_id=%d\n", thread_id);
2339                 rval = EXT_STATUS_DATA_OVERRUN;
2340                 break;
2341
2342         case CS_BIDIR_RD_OVERRUN_WR_UNDERRUN:
2343                 ql_dbg(ql_dbg_user, vha, 0x70b5,
2344                     "Command completed with read data over and write data "
2345                     "underrun thread_id=%d\n", thread_id);
2346                 rval = EXT_STATUS_DATA_OVERRUN;
2347                 break;
2348
2349         case CS_BIDIR_RD_UNDERRUN:
2350                 ql_dbg(ql_dbg_user, vha, 0x70b6,
2351                     "Command completed with read data underrun "
2352                     "thread_id=%d\n", thread_id);
2353                 rval = EXT_STATUS_DATA_UNDERRUN;
2354                 break;
2355
2356         case CS_BIDIR_RD_UNDERRUN_WR_OVERRUN:
2357                 ql_dbg(ql_dbg_user, vha, 0x70b7,
2358                     "Command completed with read data under and write data "
2359                     "overrun thread_id=%d\n", thread_id);
2360                 rval = EXT_STATUS_DATA_UNDERRUN;
2361                 break;
2362
2363         case CS_BIDIR_RD_WR_UNDERRUN:
2364                 ql_dbg(ql_dbg_user, vha, 0x70b8,
2365                     "Command completed with read and write data underrun "
2366                     "thread_id=%d\n", thread_id);
2367                 rval = EXT_STATUS_DATA_UNDERRUN;
2368                 break;
2369
2370         case CS_BIDIR_DMA:
2371                 ql_dbg(ql_dbg_user, vha, 0x70b9,
2372                     "Command completed with data DMA error thread_id=%d\n",
2373                     thread_id);
2374                 rval = EXT_STATUS_DMA_ERR;
2375                 break;
2376
2377         case CS_TIMEOUT:
2378                 ql_dbg(ql_dbg_user, vha, 0x70ba,
2379                     "Command completed with timeout thread_id=%d\n",
2380                     thread_id);
2381                 rval = EXT_STATUS_TIMEOUT;
2382                 break;
2383         default:
2384                 ql_dbg(ql_dbg_user, vha, 0x70bb,
2385                     "Command completed with completion status=0x%x "
2386                     "thread_id=%d\n", comp_status, thread_id);
2387                 rval = EXT_STATUS_ERR;
2388                 break;
2389         }
2390         bsg_reply->reply_payload_rcv_len = 0;
2391
2392 done:
2393         /* Return the vendor specific reply to API */
2394         bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval;
2395         bsg_job->reply_len = sizeof(struct fc_bsg_reply);
2396         /* Always return DID_OK, bsg will send the vendor specific response
2397          * in this case only */
2398         sp->done(sp, DID_OK << 16);
2399
2400 }
2401
2402 /**
2403  * qla2x00_status_entry() - Process a Status IOCB entry.
2404  * @vha: SCSI driver HA context
2405  * @rsp: response queue
2406  * @pkt: Entry pointer
2407  */
2408 static void
2409 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
2410 {
2411         srb_t           *sp;
2412         fc_port_t       *fcport;
2413         struct scsi_cmnd *cp;
2414         sts_entry_t *sts = pkt;
2415         struct sts_entry_24xx *sts24 = pkt;
2416         uint16_t        comp_status;
2417         uint16_t        scsi_status;
2418         uint16_t        ox_id;
2419         uint8_t         lscsi_status;
2420         int32_t         resid;
2421         uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
2422             fw_resid_len;
2423         uint8_t         *rsp_info, *sense_data;
2424         struct qla_hw_data *ha = vha->hw;
2425         uint32_t handle;
2426         uint16_t que;
2427         struct req_que *req;
2428         int logit = 1;
2429         int res = 0;
2430         uint16_t state_flags = 0;
2431         uint16_t retry_delay = 0;
2432
2433         if (IS_FWI2_CAPABLE(ha)) {
2434                 comp_status = le16_to_cpu(sts24->comp_status);
2435                 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
2436                 state_flags = le16_to_cpu(sts24->state_flags);
2437         } else {
2438                 comp_status = le16_to_cpu(sts->comp_status);
2439                 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
2440         }
2441         handle = (uint32_t) LSW(sts->handle);
2442         que = MSW(sts->handle);
2443         req = ha->req_q_map[que];
2444
2445         /* Check for invalid queue pointer */
2446         if (req == NULL ||
2447             que >= find_first_zero_bit(ha->req_qid_map, ha->max_req_queues)) {
2448                 ql_dbg(ql_dbg_io, vha, 0x3059,
2449                     "Invalid status handle (0x%x): Bad req pointer. req=%p, "
2450                     "que=%u.\n", sts->handle, req, que);
2451                 return;
2452         }
2453
2454         /* Validate handle. */
2455         if (handle < req->num_outstanding_cmds) {
2456                 sp = req->outstanding_cmds[handle];
2457                 if (!sp) {
2458                         ql_dbg(ql_dbg_io, vha, 0x3075,
2459                             "%s(%ld): Already returned command for status handle (0x%x).\n",
2460                             __func__, vha->host_no, sts->handle);
2461                         return;
2462                 }
2463         } else {
2464                 ql_dbg(ql_dbg_io, vha, 0x3017,
2465                     "Invalid status handle, out of range (0x%x).\n",
2466                     sts->handle);
2467
2468                 if (!test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)) {
2469                         if (IS_P3P_TYPE(ha))
2470                                 set_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags);
2471                         else
2472                                 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2473                         qla2xxx_wake_dpc(vha);
2474                 }
2475                 return;
2476         }
2477
2478         if (sp->abort)
2479                 sp->aborted = 1;
2480         else
2481                 sp->completed = 1;
2482
2483         if (sp->cmd_type != TYPE_SRB) {
2484                 req->outstanding_cmds[handle] = NULL;
2485                 ql_dbg(ql_dbg_io, vha, 0x3015,
2486                     "Unknown sp->cmd_type %x %p).\n",
2487                     sp->cmd_type, sp);
2488                 return;
2489         }
2490
2491         /* NVME completion. */
2492         if (sp->type == SRB_NVME_CMD) {
2493                 req->outstanding_cmds[handle] = NULL;
2494                 qla24xx_nvme_iocb_entry(vha, req, pkt, sp);
2495                 return;
2496         }
2497
2498         if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
2499                 qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
2500                 return;
2501         }
2502
2503         /* Task Management completion. */
2504         if (sp->type == SRB_TM_CMD) {
2505                 qla24xx_tm_iocb_entry(vha, req, pkt);
2506                 return;
2507         }
2508
2509         /* Fast path completion. */
2510         if (comp_status == CS_COMPLETE && scsi_status == 0) {
2511                 qla2x00_process_completed_request(vha, req, handle);
2512
2513                 return;
2514         }
2515
2516         req->outstanding_cmds[handle] = NULL;
2517         cp = GET_CMD_SP(sp);
2518         if (cp == NULL) {
2519                 ql_dbg(ql_dbg_io, vha, 0x3018,
2520                     "Command already returned (0x%x/%p).\n",
2521                     sts->handle, sp);
2522
2523                 return;
2524         }
2525
2526         lscsi_status = scsi_status & STATUS_MASK;
2527
2528         fcport = sp->fcport;
2529
2530         ox_id = 0;
2531         sense_len = par_sense_len = rsp_info_len = resid_len =
2532             fw_resid_len = 0;
2533         if (IS_FWI2_CAPABLE(ha)) {
2534                 if (scsi_status & SS_SENSE_LEN_VALID)
2535                         sense_len = le32_to_cpu(sts24->sense_len);
2536                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2537                         rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
2538                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
2539                         resid_len = le32_to_cpu(sts24->rsp_residual_count);
2540                 if (comp_status == CS_DATA_UNDERRUN)
2541                         fw_resid_len = le32_to_cpu(sts24->residual_len);
2542                 rsp_info = sts24->data;
2543                 sense_data = sts24->data;
2544                 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
2545                 ox_id = le16_to_cpu(sts24->ox_id);
2546                 par_sense_len = sizeof(sts24->data);
2547                 /* Valid values of the retry delay timer are 0x1-0xffef */
2548                 if (sts24->retry_delay > 0 && sts24->retry_delay < 0xfff1) {
2549                         retry_delay = sts24->retry_delay & 0x3fff;
2550                         ql_dbg(ql_dbg_io, sp->vha, 0x3033,
2551                             "%s: scope=%#x retry_delay=%#x\n", __func__,
2552                             sts24->retry_delay >> 14, retry_delay);
2553                 }
2554         } else {
2555                 if (scsi_status & SS_SENSE_LEN_VALID)
2556                         sense_len = le16_to_cpu(sts->req_sense_length);
2557                 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
2558                         rsp_info_len = le16_to_cpu(sts->rsp_info_len);
2559                 resid_len = le32_to_cpu(sts->residual_length);
2560                 rsp_info = sts->rsp_info;
2561                 sense_data = sts->req_sense_data;
2562                 par_sense_len = sizeof(sts->req_sense_data);
2563         }
2564
2565         /* Check for any FCP transport errors. */
2566         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
2567                 /* Sense data lies beyond any FCP RESPONSE data. */
2568                 if (IS_FWI2_CAPABLE(ha)) {
2569                         sense_data += rsp_info_len;
2570                         par_sense_len -= rsp_info_len;
2571                 }
2572                 if (rsp_info_len > 3 && rsp_info[3]) {
2573                         ql_dbg(ql_dbg_io, fcport->vha, 0x3019,
2574                             "FCP I/O protocol failure (0x%x/0x%x).\n",
2575                             rsp_info_len, rsp_info[3]);
2576
2577                         res = DID_BUS_BUSY << 16;
2578                         goto out;
2579                 }
2580         }
2581
2582         /* Check for overrun. */
2583         if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
2584             scsi_status & SS_RESIDUAL_OVER)
2585                 comp_status = CS_DATA_OVERRUN;
2586
2587         /*
2588          * Check retry_delay_timer value if we receive a busy or
2589          * queue full.
2590          */
2591         if (lscsi_status == SAM_STAT_TASK_SET_FULL ||
2592             lscsi_status == SAM_STAT_BUSY)
2593                 qla2x00_set_retry_delay_timestamp(fcport, retry_delay);
2594
2595         /*
2596          * Based on Host and scsi status generate status code for Linux
2597          */
2598         switch (comp_status) {
2599         case CS_COMPLETE:
2600         case CS_QUEUE_FULL:
2601                 if (scsi_status == 0) {
2602                         res = DID_OK << 16;
2603                         break;
2604                 }
2605                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
2606                         resid = resid_len;
2607                         scsi_set_resid(cp, resid);
2608
2609                         if (!lscsi_status &&
2610                             ((unsigned)(scsi_bufflen(cp) - resid) <
2611                              cp->underflow)) {
2612                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301a,
2613                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2614                                     resid, scsi_bufflen(cp));
2615
2616                                 res = DID_ERROR << 16;
2617                                 break;
2618                         }
2619                 }
2620                 res = DID_OK << 16 | lscsi_status;
2621
2622                 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2623                         ql_dbg(ql_dbg_io, fcport->vha, 0x301b,
2624                             "QUEUE FULL detected.\n");
2625                         break;
2626                 }
2627                 logit = 0;
2628                 if (lscsi_status != SS_CHECK_CONDITION)
2629                         break;
2630
2631                 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2632                 if (!(scsi_status & SS_SENSE_LEN_VALID))
2633                         break;
2634
2635                 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
2636                     rsp, res);
2637                 break;
2638
2639         case CS_DATA_UNDERRUN:
2640                 /* Use F/W calculated residual length. */
2641                 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
2642                 scsi_set_resid(cp, resid);
2643                 if (scsi_status & SS_RESIDUAL_UNDER) {
2644                         if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
2645                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301d,
2646                                     "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2647                                     resid, scsi_bufflen(cp));
2648
2649                                 res = DID_ERROR << 16 | lscsi_status;
2650                                 goto check_scsi_status;
2651                         }
2652
2653                         if (!lscsi_status &&
2654                             ((unsigned)(scsi_bufflen(cp) - resid) <
2655                             cp->underflow)) {
2656                                 ql_dbg(ql_dbg_io, fcport->vha, 0x301e,
2657                                     "Mid-layer underflow detected (0x%x of 0x%x bytes).\n",
2658                                     resid, scsi_bufflen(cp));
2659
2660                                 res = DID_ERROR << 16;
2661                                 break;
2662                         }
2663                 } else if (lscsi_status != SAM_STAT_TASK_SET_FULL &&
2664                             lscsi_status != SAM_STAT_BUSY) {
2665                         /*
2666                          * scsi status of task set and busy are considered to be
2667                          * task not completed.
2668                          */
2669
2670                         ql_dbg(ql_dbg_io, fcport->vha, 0x301f,
2671                             "Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
2672                             resid, scsi_bufflen(cp));
2673
2674                         res = DID_ERROR << 16 | lscsi_status;
2675                         goto check_scsi_status;
2676                 } else {
2677                         ql_dbg(ql_dbg_io, fcport->vha, 0x3030,
2678                             "scsi_status: 0x%x, lscsi_status: 0x%x\n",
2679                             scsi_status, lscsi_status);
2680                 }
2681
2682                 res = DID_OK << 16 | lscsi_status;
2683                 logit = 0;
2684
2685 check_scsi_status:
2686                 /*
2687                  * Check to see if SCSI Status is non zero. If so report SCSI
2688                  * Status.
2689                  */
2690                 if (lscsi_status != 0) {
2691                         if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
2692                                 ql_dbg(ql_dbg_io, fcport->vha, 0x3020,
2693                                     "QUEUE FULL detected.\n");
2694                                 logit = 1;
2695                                 break;
2696                         }
2697                         if (lscsi_status != SS_CHECK_CONDITION)
2698                                 break;
2699
2700                         memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
2701                         if (!(scsi_status & SS_SENSE_LEN_VALID))
2702                                 break;
2703
2704                         qla2x00_handle_sense(sp, sense_data, par_sense_len,
2705                             sense_len, rsp, res);
2706                 }
2707                 break;
2708
2709         case CS_PORT_LOGGED_OUT:
2710         case CS_PORT_CONFIG_CHG:
2711         case CS_PORT_BUSY:
2712         case CS_INCOMPLETE:
2713         case CS_PORT_UNAVAILABLE:
2714         case CS_TIMEOUT:
2715         case CS_RESET:
2716
2717                 /*
2718                  * We are going to have the fc class block the rport
2719                  * while we try to recover so instruct the mid layer
2720                  * to requeue until the class decides how to handle this.
2721                  */
2722                 res = DID_TRANSPORT_DISRUPTED << 16;
2723
2724                 if (comp_status == CS_TIMEOUT) {
2725                         if (IS_FWI2_CAPABLE(ha))
2726                                 break;
2727                         else if ((le16_to_cpu(sts->status_flags) &
2728                             SF_LOGOUT_SENT) == 0)
2729                                 break;
2730                 }
2731
2732                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
2733                         ql_dbg(ql_dbg_disc, fcport->vha, 0x3021,
2734                                 "Port to be marked lost on fcport=%02x%02x%02x, current "
2735                                 "port state= %s comp_status %x.\n", fcport->d_id.b.domain,
2736                                 fcport->d_id.b.area, fcport->d_id.b.al_pa,
2737                                 port_state_str[FCS_ONLINE],
2738                                 comp_status);
2739
2740                         qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
2741                         qlt_schedule_sess_for_deletion(fcport);
2742                 }
2743
2744                 break;
2745
2746         case CS_ABORTED:
2747                 res = DID_RESET << 16;
2748                 break;
2749
2750         case CS_DIF_ERROR:
2751                 logit = qla2x00_handle_dif_error(sp, sts24);
2752                 res = cp->result;
2753                 break;
2754
2755         case CS_TRANSPORT:
2756                 res = DID_ERROR << 16;
2757
2758                 if (!IS_PI_SPLIT_DET_CAPABLE(ha))
2759                         break;
2760
2761                 if (state_flags & BIT_4)
2762                         scmd_printk(KERN_WARNING, cp,
2763                             "Unsupported device '%s' found.\n",
2764                             cp->device->vendor);
2765                 break;
2766
2767         case CS_DMA:
2768                 ql_log(ql_log_info, fcport->vha, 0x3022,
2769                     "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",
2770                     comp_status, scsi_status, res, vha->host_no,
2771                     cp->device->id, cp->device->lun, fcport->d_id.b24,
2772                     ox_id, cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2773                     resid_len, fw_resid_len, sp, cp);
2774                 ql_dump_buffer(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe0ee,
2775                     pkt, sizeof(*sts24));
2776                 res = DID_ERROR << 16;
2777                 break;
2778         default:
2779                 res = DID_ERROR << 16;
2780                 break;
2781         }
2782
2783 out:
2784         if (logit)
2785                 ql_dbg(ql_dbg_io, fcport->vha, 0x3022,
2786                     "FCP command status: 0x%x-0x%x (0x%x) nexus=%ld:%d:%llu "
2787                     "portid=%02x%02x%02x oxid=0x%x cdb=%10phN len=0x%x "
2788                     "rsp_info=0x%x resid=0x%x fw_resid=0x%x sp=%p cp=%p.\n",
2789                     comp_status, scsi_status, res, vha->host_no,
2790                     cp->device->id, cp->device->lun, fcport->d_id.b.domain,
2791                     fcport->d_id.b.area, fcport->d_id.b.al_pa, ox_id,
2792                     cp->cmnd, scsi_bufflen(cp), rsp_info_len,
2793                     resid_len, fw_resid_len, sp, cp);
2794
2795         if (rsp->status_srb == NULL)
2796                 sp->done(sp, res);
2797 }
2798
2799 /**
2800  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
2801  * @rsp: response queue
2802  * @pkt: Entry pointer
2803  *
2804  * Extended sense data.
2805  */
2806 static void
2807 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
2808 {
2809         uint8_t sense_sz = 0;
2810         struct qla_hw_data *ha = rsp->hw;
2811         struct scsi_qla_host *vha = pci_get_drvdata(ha->pdev);
2812         srb_t *sp = rsp->status_srb;
2813         struct scsi_cmnd *cp;
2814         uint32_t sense_len;
2815         uint8_t *sense_ptr;
2816
2817         if (!sp || !GET_CMD_SENSE_LEN(sp))
2818                 return;
2819
2820         sense_len = GET_CMD_SENSE_LEN(sp);
2821         sense_ptr = GET_CMD_SENSE_PTR(sp);
2822
2823         cp = GET_CMD_SP(sp);
2824         if (cp == NULL) {
2825                 ql_log(ql_log_warn, vha, 0x3025,
2826                     "cmd is NULL: already returned to OS (sp=%p).\n", sp);
2827
2828                 rsp->status_srb = NULL;
2829                 return;
2830         }
2831
2832         if (sense_len > sizeof(pkt->data))
2833                 sense_sz = sizeof(pkt->data);
2834         else
2835                 sense_sz = sense_len;
2836
2837         /* Move sense data. */
2838         if (IS_FWI2_CAPABLE(ha))
2839                 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
2840         memcpy(sense_ptr, pkt->data, sense_sz);
2841         ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302c,
2842                 sense_ptr, sense_sz);
2843
2844         sense_len -= sense_sz;
2845         sense_ptr += sense_sz;
2846
2847         SET_CMD_SENSE_PTR(sp, sense_ptr);
2848         SET_CMD_SENSE_LEN(sp, sense_len);
2849
2850         /* Place command on done queue. */
2851         if (sense_len == 0) {
2852                 rsp->status_srb = NULL;
2853                 sp->done(sp, cp->result);
2854         }
2855 }
2856
2857 /**
2858  * qla2x00_error_entry() - Process an error entry.
2859  * @vha: SCSI driver HA context
2860  * @rsp: response queue
2861  * @pkt: Entry pointer
2862  * return : 1=allow further error analysis. 0=no additional error analysis.
2863  */
2864 static int
2865 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
2866 {
2867         srb_t *sp;
2868         struct qla_hw_data *ha = vha->hw;
2869         const char func[] = "ERROR-IOCB";
2870         uint16_t que = MSW(pkt->handle);
2871         struct req_que *req = NULL;
2872         int res = DID_ERROR << 16;
2873
2874         ql_dbg(ql_dbg_async, vha, 0x502a,
2875             "iocb type %xh with error status %xh, handle %xh, rspq id %d\n",
2876             pkt->entry_type, pkt->entry_status, pkt->handle, rsp->id);
2877
2878         if (que >= ha->max_req_queues || !ha->req_q_map[que])
2879                 goto fatal;
2880
2881         req = ha->req_q_map[que];
2882
2883         if (pkt->entry_status & RF_BUSY)
2884                 res = DID_BUS_BUSY << 16;
2885
2886         if ((pkt->handle & ~QLA_TGT_HANDLE_MASK) == QLA_TGT_SKIP_HANDLE)
2887                 return 0;
2888
2889         switch (pkt->entry_type) {
2890         case NOTIFY_ACK_TYPE:
2891         case STATUS_TYPE:
2892         case STATUS_CONT_TYPE:
2893         case LOGINOUT_PORT_IOCB_TYPE:
2894         case CT_IOCB_TYPE:
2895         case ELS_IOCB_TYPE:
2896         case ABORT_IOCB_TYPE:
2897         case MBX_IOCB_TYPE:
2898         default:
2899                 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2900                 if (sp) {
2901                         sp->done(sp, res);
2902                         return 0;
2903                 }
2904                 break;
2905
2906         case ABTS_RESP_24XX:
2907         case CTIO_TYPE7:
2908         case CTIO_CRC2:
2909                 return 1;
2910         }
2911 fatal:
2912         ql_log(ql_log_warn, vha, 0x5030,
2913             "Error entry - invalid handle/queue (%04x).\n", que);
2914         return 0;
2915 }
2916
2917 /**
2918  * qla24xx_mbx_completion() - Process mailbox command completions.
2919  * @vha: SCSI driver HA context
2920  * @mb0: Mailbox0 register
2921  */
2922 static void
2923 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
2924 {
2925         uint16_t        cnt;
2926         uint32_t        mboxes;
2927         uint16_t __iomem *wptr;
2928         struct qla_hw_data *ha = vha->hw;
2929         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2930
2931         /* Read all mbox registers? */
2932         WARN_ON_ONCE(ha->mbx_count > 32);
2933         mboxes = (1ULL << ha->mbx_count) - 1;
2934         if (!ha->mcp)
2935                 ql_dbg(ql_dbg_async, vha, 0x504e, "MBX pointer ERROR.\n");
2936         else
2937                 mboxes = ha->mcp->in_mb;
2938
2939         /* Load return mailbox registers. */
2940         ha->flags.mbox_int = 1;
2941         ha->mailbox_out[0] = mb0;
2942         mboxes >>= 1;
2943         wptr = (uint16_t __iomem *)&reg->mailbox1;
2944
2945         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
2946                 if (mboxes & BIT_0)
2947                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
2948
2949                 mboxes >>= 1;
2950                 wptr++;
2951         }
2952 }
2953
2954 static void
2955 qla24xx_abort_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
2956         struct abort_entry_24xx *pkt)
2957 {
2958         const char func[] = "ABT_IOCB";
2959         srb_t *sp;
2960         struct srb_iocb *abt;
2961
2962         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2963         if (!sp)
2964                 return;
2965
2966         abt = &sp->u.iocb_cmd;
2967         abt->u.abt.comp_status = le16_to_cpu(pkt->nport_handle);
2968         sp->done(sp, 0);
2969 }
2970
2971 void qla24xx_nvme_ls4_iocb(struct scsi_qla_host *vha,
2972     struct pt_ls4_request *pkt, struct req_que *req)
2973 {
2974         srb_t *sp;
2975         const char func[] = "LS4_IOCB";
2976         uint16_t comp_status;
2977
2978         sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
2979         if (!sp)
2980                 return;
2981
2982         comp_status = le16_to_cpu(pkt->status);
2983         sp->done(sp, comp_status);
2984 }
2985
2986 /**
2987  * qla24xx_process_response_queue() - Process response queue entries.
2988  * @vha: SCSI driver HA context
2989  * @rsp: response queue
2990  */
2991 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
2992         struct rsp_que *rsp)
2993 {
2994         struct sts_entry_24xx *pkt;
2995         struct qla_hw_data *ha = vha->hw;
2996
2997         if (!ha->flags.fw_started)
2998                 return;
2999
3000         if (rsp->qpair->cpuid != smp_processor_id())
3001                 qla_cpu_update(rsp->qpair, smp_processor_id());
3002
3003         while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
3004                 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
3005
3006                 rsp->ring_index++;
3007                 if (rsp->ring_index == rsp->length) {
3008                         rsp->ring_index = 0;
3009                         rsp->ring_ptr = rsp->ring;
3010                 } else {
3011                         rsp->ring_ptr++;
3012                 }
3013
3014                 if (pkt->entry_status != 0) {
3015                         if (qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt))
3016                                 goto process_err;
3017
3018                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3019                         wmb();
3020                         continue;
3021                 }
3022 process_err:
3023
3024                 switch (pkt->entry_type) {
3025                 case STATUS_TYPE:
3026                         qla2x00_status_entry(vha, rsp, pkt);
3027                         break;
3028                 case STATUS_CONT_TYPE:
3029                         qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
3030                         break;
3031                 case VP_RPT_ID_IOCB_TYPE:
3032                         qla24xx_report_id_acquisition(vha,
3033                             (struct vp_rpt_id_entry_24xx *)pkt);
3034                         break;
3035                 case LOGINOUT_PORT_IOCB_TYPE:
3036                         qla24xx_logio_entry(vha, rsp->req,
3037                             (struct logio_entry_24xx *)pkt);
3038                         break;
3039                 case CT_IOCB_TYPE:
3040                         qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
3041                         break;
3042                 case ELS_IOCB_TYPE:
3043                         qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
3044                         break;
3045                 case ABTS_RECV_24XX:
3046                         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) ||
3047                             IS_QLA28XX(ha)) {
3048                                 /* ensure that the ATIO queue is empty */
3049                                 qlt_handle_abts_recv(vha, rsp,
3050                                     (response_t *)pkt);
3051                                 break;
3052                         } else {
3053                                 qlt_24xx_process_atio_queue(vha, 1);
3054                         }
3055                         /* fall through */
3056                 case ABTS_RESP_24XX:
3057                 case CTIO_TYPE7:
3058                 case CTIO_CRC2:
3059                         qlt_response_pkt_all_vps(vha, rsp, (response_t *)pkt);
3060                         break;
3061                 case PT_LS4_REQUEST:
3062                         qla24xx_nvme_ls4_iocb(vha, (struct pt_ls4_request *)pkt,
3063                             rsp->req);
3064                         break;
3065                 case NOTIFY_ACK_TYPE:
3066                         if (pkt->handle == QLA_TGT_SKIP_HANDLE)
3067                                 qlt_response_pkt_all_vps(vha, rsp,
3068                                     (response_t *)pkt);
3069                         else
3070                                 qla24xxx_nack_iocb_entry(vha, rsp->req,
3071                                         (struct nack_to_isp *)pkt);
3072                         break;
3073                 case MARKER_TYPE:
3074                         /* Do nothing in this case, this check is to prevent it
3075                          * from falling into default case
3076                          */
3077                         break;
3078                 case ABORT_IOCB_TYPE:
3079                         qla24xx_abort_iocb_entry(vha, rsp->req,
3080                             (struct abort_entry_24xx *)pkt);
3081                         break;
3082                 case MBX_IOCB_TYPE:
3083                         qla24xx_mbx_iocb_entry(vha, rsp->req,
3084                             (struct mbx_24xx_entry *)pkt);
3085                         break;
3086                 case VP_CTRL_IOCB_TYPE:
3087                         qla_ctrlvp_completed(vha, rsp->req,
3088                             (struct vp_ctrl_entry_24xx *)pkt);
3089                         break;
3090                 default:
3091                         /* Type Not Supported. */
3092                         ql_dbg(ql_dbg_async, vha, 0x5042,
3093                             "Received unknown response pkt type %x "
3094                             "entry status=%x.\n",
3095                             pkt->entry_type, pkt->entry_status);
3096                         break;
3097                 }
3098                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
3099                 wmb();
3100         }
3101
3102         /* Adjust ring index */
3103         if (IS_P3P_TYPE(ha)) {
3104                 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
3105
3106                 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
3107         } else {
3108                 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
3109         }
3110 }
3111
3112 static void
3113 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
3114 {
3115         int rval;
3116         uint32_t cnt;
3117         struct qla_hw_data *ha = vha->hw;
3118         struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
3119
3120         if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
3121             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3122                 return;
3123
3124         rval = QLA_SUCCESS;
3125         WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
3126         RD_REG_DWORD(&reg->iobase_addr);
3127         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3128         for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3129             rval == QLA_SUCCESS; cnt--) {
3130                 if (cnt) {
3131                         WRT_REG_DWORD(&reg->iobase_window, 0x0001);
3132                         udelay(10);
3133                 } else
3134                         rval = QLA_FUNCTION_TIMEOUT;
3135         }
3136         if (rval == QLA_SUCCESS)
3137                 goto next_test;
3138
3139         rval = QLA_SUCCESS;
3140         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3141         for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
3142             rval == QLA_SUCCESS; cnt--) {
3143                 if (cnt) {
3144                         WRT_REG_DWORD(&reg->iobase_window, 0x0003);
3145                         udelay(10);
3146                 } else
3147                         rval = QLA_FUNCTION_TIMEOUT;
3148         }
3149         if (rval != QLA_SUCCESS)
3150                 goto done;
3151
3152 next_test:
3153         if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
3154                 ql_log(ql_log_info, vha, 0x504c,
3155                     "Additional code -- 0x55AA.\n");
3156
3157 done:
3158         WRT_REG_DWORD(&reg->iobase_window, 0x0000);
3159         RD_REG_DWORD(&reg->iobase_window);
3160 }
3161
3162 /**
3163  * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP24xx.
3164  * @irq: interrupt number
3165  * @dev_id: SCSI driver HA context
3166  *
3167  * Called by system whenever the host adapter generates an interrupt.
3168  *
3169  * Returns handled flag.
3170  */
3171 irqreturn_t
3172 qla24xx_intr_handler(int irq, void *dev_id)
3173 {
3174         scsi_qla_host_t *vha;
3175         struct qla_hw_data *ha;
3176         struct device_reg_24xx __iomem *reg;
3177         int             status;
3178         unsigned long   iter;
3179         uint32_t        stat;
3180         uint32_t        hccr;
3181         uint16_t        mb[8];
3182         struct rsp_que *rsp;
3183         unsigned long   flags;
3184         bool process_atio = false;
3185
3186         rsp = (struct rsp_que *) dev_id;
3187         if (!rsp) {
3188                 ql_log(ql_log_info, NULL, 0x5059,
3189                     "%s: NULL response queue pointer.\n", __func__);
3190                 return IRQ_NONE;
3191         }
3192
3193         ha = rsp->hw;
3194         reg = &ha->iobase->isp24;
3195         status = 0;
3196
3197         if (unlikely(pci_channel_offline(ha->pdev)))
3198                 return IRQ_HANDLED;
3199
3200         spin_lock_irqsave(&ha->hardware_lock, flags);
3201         vha = pci_get_drvdata(ha->pdev);
3202         for (iter = 50; iter--; ) {
3203                 stat = RD_REG_DWORD(&reg->host_status);
3204                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3205                         break;
3206                 if (stat & HSRX_RISC_PAUSED) {
3207                         if (unlikely(pci_channel_offline(ha->pdev)))
3208                                 break;
3209
3210                         hccr = RD_REG_DWORD(&reg->hccr);
3211
3212                         ql_log(ql_log_warn, vha, 0x504b,
3213                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3214                             hccr);
3215
3216                         qla2xxx_check_risc_status(vha);
3217
3218                         ha->isp_ops->fw_dump(vha, 1);
3219                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3220                         break;
3221                 } else if ((stat & HSRX_RISC_INT) == 0)
3222                         break;
3223
3224                 switch (stat & 0xff) {
3225                 case INTR_ROM_MB_SUCCESS:
3226                 case INTR_ROM_MB_FAILED:
3227                 case INTR_MB_SUCCESS:
3228                 case INTR_MB_FAILED:
3229                         qla24xx_mbx_completion(vha, MSW(stat));
3230                         status |= MBX_INTERRUPT;
3231
3232                         break;
3233                 case INTR_ASYNC_EVENT:
3234                         mb[0] = MSW(stat);
3235                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3236                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3237                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3238                         qla2x00_async_event(vha, rsp, mb);
3239                         break;
3240                 case INTR_RSP_QUE_UPDATE:
3241                 case INTR_RSP_QUE_UPDATE_83XX:
3242                         qla24xx_process_response_queue(vha, rsp);
3243                         break;
3244                 case INTR_ATIO_QUE_UPDATE_27XX:
3245                 case INTR_ATIO_QUE_UPDATE:
3246                         process_atio = true;
3247                         break;
3248                 case INTR_ATIO_RSP_QUE_UPDATE:
3249                         process_atio = true;
3250                         qla24xx_process_response_queue(vha, rsp);
3251                         break;
3252                 default:
3253                         ql_dbg(ql_dbg_async, vha, 0x504f,
3254                             "Unrecognized interrupt type (%d).\n", stat * 0xff);
3255                         break;
3256                 }
3257                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3258                 RD_REG_DWORD_RELAXED(&reg->hccr);
3259                 if (unlikely(IS_QLA83XX(ha) && (ha->pdev->revision == 1)))
3260                         ndelay(3500);
3261         }
3262         qla2x00_handle_mbx_completion(ha, status);
3263         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3264
3265         if (process_atio) {
3266                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3267                 qlt_24xx_process_atio_queue(vha, 0);
3268                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3269         }
3270
3271         return IRQ_HANDLED;
3272 }
3273
3274 static irqreturn_t
3275 qla24xx_msix_rsp_q(int irq, void *dev_id)
3276 {
3277         struct qla_hw_data *ha;
3278         struct rsp_que *rsp;
3279         struct device_reg_24xx __iomem *reg;
3280         struct scsi_qla_host *vha;
3281         unsigned long flags;
3282
3283         rsp = (struct rsp_que *) dev_id;
3284         if (!rsp) {
3285                 ql_log(ql_log_info, NULL, 0x505a,
3286                     "%s: NULL response queue pointer.\n", __func__);
3287                 return IRQ_NONE;
3288         }
3289         ha = rsp->hw;
3290         reg = &ha->iobase->isp24;
3291
3292         spin_lock_irqsave(&ha->hardware_lock, flags);
3293
3294         vha = pci_get_drvdata(ha->pdev);
3295         qla24xx_process_response_queue(vha, rsp);
3296         if (!ha->flags.disable_msix_handshake) {
3297                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3298                 RD_REG_DWORD_RELAXED(&reg->hccr);
3299         }
3300         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3301
3302         return IRQ_HANDLED;
3303 }
3304
3305 static irqreturn_t
3306 qla24xx_msix_default(int irq, void *dev_id)
3307 {
3308         scsi_qla_host_t *vha;
3309         struct qla_hw_data *ha;
3310         struct rsp_que *rsp;
3311         struct device_reg_24xx __iomem *reg;
3312         int             status;
3313         uint32_t        stat;
3314         uint32_t        hccr;
3315         uint16_t        mb[8];
3316         unsigned long flags;
3317         bool process_atio = false;
3318
3319         rsp = (struct rsp_que *) dev_id;
3320         if (!rsp) {
3321                 ql_log(ql_log_info, NULL, 0x505c,
3322                     "%s: NULL response queue pointer.\n", __func__);
3323                 return IRQ_NONE;
3324         }
3325         ha = rsp->hw;
3326         reg = &ha->iobase->isp24;
3327         status = 0;
3328
3329         spin_lock_irqsave(&ha->hardware_lock, flags);
3330         vha = pci_get_drvdata(ha->pdev);
3331         do {
3332                 stat = RD_REG_DWORD(&reg->host_status);
3333                 if (qla2x00_check_reg32_for_disconnect(vha, stat))
3334                         break;
3335                 if (stat & HSRX_RISC_PAUSED) {
3336                         if (unlikely(pci_channel_offline(ha->pdev)))
3337                                 break;
3338
3339                         hccr = RD_REG_DWORD(&reg->hccr);
3340
3341                         ql_log(ql_log_info, vha, 0x5050,
3342                             "RISC paused -- HCCR=%x, Dumping firmware.\n",
3343                             hccr);
3344
3345                         qla2xxx_check_risc_status(vha);
3346
3347                         ha->isp_ops->fw_dump(vha, 1);
3348                         set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
3349                         break;
3350                 } else if ((stat & HSRX_RISC_INT) == 0)
3351                         break;
3352
3353                 switch (stat & 0xff) {
3354                 case INTR_ROM_MB_SUCCESS:
3355                 case INTR_ROM_MB_FAILED:
3356                 case INTR_MB_SUCCESS:
3357                 case INTR_MB_FAILED:
3358                         qla24xx_mbx_completion(vha, MSW(stat));
3359                         status |= MBX_INTERRUPT;
3360
3361                         break;
3362                 case INTR_ASYNC_EVENT:
3363                         mb[0] = MSW(stat);
3364                         mb[1] = RD_REG_WORD(&reg->mailbox1);
3365                         mb[2] = RD_REG_WORD(&reg->mailbox2);
3366                         mb[3] = RD_REG_WORD(&reg->mailbox3);
3367                         qla2x00_async_event(vha, rsp, mb);
3368                         break;
3369                 case INTR_RSP_QUE_UPDATE:
3370                 case INTR_RSP_QUE_UPDATE_83XX:
3371                         qla24xx_process_response_queue(vha, rsp);
3372                         break;
3373                 case INTR_ATIO_QUE_UPDATE_27XX:
3374                 case INTR_ATIO_QUE_UPDATE:
3375                         process_atio = true;
3376                         break;
3377                 case INTR_ATIO_RSP_QUE_UPDATE:
3378                         process_atio = true;
3379                         qla24xx_process_response_queue(vha, rsp);
3380                         break;
3381                 default:
3382                         ql_dbg(ql_dbg_async, vha, 0x5051,
3383                             "Unrecognized interrupt type (%d).\n", stat & 0xff);
3384                         break;
3385                 }
3386                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3387         } while (0);
3388         qla2x00_handle_mbx_completion(ha, status);
3389         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3390
3391         if (process_atio) {
3392                 spin_lock_irqsave(&ha->tgt.atio_lock, flags);
3393                 qlt_24xx_process_atio_queue(vha, 0);
3394                 spin_unlock_irqrestore(&ha->tgt.atio_lock, flags);
3395         }
3396
3397         return IRQ_HANDLED;
3398 }
3399
3400 irqreturn_t
3401 qla2xxx_msix_rsp_q(int irq, void *dev_id)
3402 {
3403         struct qla_hw_data *ha;
3404         struct qla_qpair *qpair;
3405         struct device_reg_24xx __iomem *reg;
3406         unsigned long flags;
3407
3408         qpair = dev_id;
3409         if (!qpair) {
3410                 ql_log(ql_log_info, NULL, 0x505b,
3411                     "%s: NULL response queue pointer.\n", __func__);
3412                 return IRQ_NONE;
3413         }
3414         ha = qpair->hw;
3415
3416         /* Clear the interrupt, if enabled, for this response queue */
3417         if (unlikely(!ha->flags.disable_msix_handshake)) {
3418                 reg = &ha->iobase->isp24;
3419                 spin_lock_irqsave(&ha->hardware_lock, flags);
3420                 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
3421                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3422         }
3423
3424         queue_work(ha->wq, &qpair->q_work);
3425
3426         return IRQ_HANDLED;
3427 }
3428
3429 /* Interrupt handling helpers. */
3430
3431 struct qla_init_msix_entry {
3432         const char *name;
3433         irq_handler_t handler;
3434 };
3435
3436 static const struct qla_init_msix_entry msix_entries[] = {
3437         { "default", qla24xx_msix_default },
3438         { "rsp_q", qla24xx_msix_rsp_q },
3439         { "atio_q", qla83xx_msix_atio_q },
3440         { "qpair_multiq", qla2xxx_msix_rsp_q },
3441 };
3442
3443 static const struct qla_init_msix_entry qla82xx_msix_entries[] = {
3444         { "qla2xxx (default)", qla82xx_msix_default },
3445         { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
3446 };
3447
3448 static int
3449 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
3450 {
3451         int i, ret;
3452         struct qla_msix_entry *qentry;
3453         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3454         int min_vecs = QLA_BASE_VECTORS;
3455         struct irq_affinity desc = {
3456                 .pre_vectors = QLA_BASE_VECTORS,
3457         };
3458
3459         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3460             IS_ATIO_MSIX_CAPABLE(ha)) {
3461                 desc.pre_vectors++;
3462                 min_vecs++;
3463         }
3464
3465         if (USER_CTRL_IRQ(ha) || !ha->mqiobase) {
3466                 /* user wants to control IRQ setting for target mode */
3467                 ret = pci_alloc_irq_vectors(ha->pdev, min_vecs,
3468                     ha->msix_count, PCI_IRQ_MSIX);
3469         } else
3470                 ret = pci_alloc_irq_vectors_affinity(ha->pdev, min_vecs,
3471                     ha->msix_count, PCI_IRQ_MSIX | PCI_IRQ_AFFINITY,
3472                     &desc);
3473
3474         if (ret < 0) {
3475                 ql_log(ql_log_fatal, vha, 0x00c7,
3476                     "MSI-X: Failed to enable support, "
3477                     "giving   up -- %d/%d.\n",
3478                     ha->msix_count, ret);
3479                 goto msix_out;
3480         } else if (ret < ha->msix_count) {
3481                 ql_log(ql_log_info, vha, 0x00c6,
3482                     "MSI-X: Using %d vectors\n", ret);
3483                 ha->msix_count = ret;
3484                 /* Recalculate queue values */
3485                 if (ha->mqiobase && (ql2xmqsupport || ql2xnvmeenable)) {
3486                         ha->max_req_queues = ha->msix_count - 1;
3487
3488                         /* ATIOQ needs 1 vector. That's 1 less QPair */
3489                         if (QLA_TGT_MODE_ENABLED())
3490                                 ha->max_req_queues--;
3491
3492                         ha->max_rsp_queues = ha->max_req_queues;
3493
3494                         ha->max_qpairs = ha->max_req_queues - 1;
3495                         ql_dbg_pci(ql_dbg_init, ha->pdev, 0x0190,
3496                             "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs);
3497                 }
3498         }
3499         vha->irq_offset = desc.pre_vectors;
3500         ha->msix_entries = kcalloc(ha->msix_count,
3501                                    sizeof(struct qla_msix_entry),
3502                                    GFP_KERNEL);
3503         if (!ha->msix_entries) {
3504                 ql_log(ql_log_fatal, vha, 0x00c8,
3505                     "Failed to allocate memory for ha->msix_entries.\n");
3506                 ret = -ENOMEM;
3507                 goto free_irqs;
3508         }
3509         ha->flags.msix_enabled = 1;
3510
3511         for (i = 0; i < ha->msix_count; i++) {
3512                 qentry = &ha->msix_entries[i];
3513                 qentry->vector = pci_irq_vector(ha->pdev, i);
3514                 qentry->entry = i;
3515                 qentry->have_irq = 0;
3516                 qentry->in_use = 0;
3517                 qentry->handle = NULL;
3518         }
3519
3520         /* Enable MSI-X vectors for the base queue */
3521         for (i = 0; i < QLA_BASE_VECTORS; i++) {
3522                 qentry = &ha->msix_entries[i];
3523                 qentry->handle = rsp;
3524                 rsp->msix = qentry;
3525                 scnprintf(qentry->name, sizeof(qentry->name),
3526                     "qla2xxx%lu_%s", vha->host_no, msix_entries[i].name);
3527                 if (IS_P3P_TYPE(ha))
3528                         ret = request_irq(qentry->vector,
3529                                 qla82xx_msix_entries[i].handler,
3530                                 0, qla82xx_msix_entries[i].name, rsp);
3531                 else
3532                         ret = request_irq(qentry->vector,
3533                                 msix_entries[i].handler,
3534                                 0, qentry->name, rsp);
3535                 if (ret)
3536                         goto msix_register_fail;
3537                 qentry->have_irq = 1;
3538                 qentry->in_use = 1;
3539         }
3540
3541         /*
3542          * If target mode is enable, also request the vector for the ATIO
3543          * queue.
3544          */
3545         if (QLA_TGT_MODE_ENABLED() && (ql2xenablemsix != 0) &&
3546             IS_ATIO_MSIX_CAPABLE(ha)) {
3547                 qentry = &ha->msix_entries[QLA_ATIO_VECTOR];
3548                 rsp->msix = qentry;
3549                 qentry->handle = rsp;
3550                 scnprintf(qentry->name, sizeof(qentry->name),
3551                     "qla2xxx%lu_%s", vha->host_no,
3552                     msix_entries[QLA_ATIO_VECTOR].name);
3553                 qentry->in_use = 1;
3554                 ret = request_irq(qentry->vector,
3555                         msix_entries[QLA_ATIO_VECTOR].handler,
3556                         0, qentry->name, rsp);
3557                 qentry->have_irq = 1;
3558         }
3559
3560 msix_register_fail:
3561         if (ret) {
3562                 ql_log(ql_log_fatal, vha, 0x00cb,
3563                     "MSI-X: unable to register handler -- %x/%d.\n",
3564                     qentry->vector, ret);
3565                 qla2x00_free_irqs(vha);
3566                 ha->mqenable = 0;
3567                 goto msix_out;
3568         }
3569
3570         /* Enable MSI-X vector for response queue update for queue 0 */
3571         if (IS_QLA83XX(ha) || IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
3572                 if (ha->msixbase && ha->mqiobase &&
3573                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3574                      ql2xmqsupport))
3575                         ha->mqenable = 1;
3576         } else
3577                 if (ha->mqiobase &&
3578                     (ha->max_rsp_queues > 1 || ha->max_req_queues > 1 ||
3579                      ql2xmqsupport))
3580                         ha->mqenable = 1;
3581         ql_dbg(ql_dbg_multiq, vha, 0xc005,
3582             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3583             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3584         ql_dbg(ql_dbg_init, vha, 0x0055,
3585             "mqiobase=%p, max_rsp_queues=%d, max_req_queues=%d.\n",
3586             ha->mqiobase, ha->max_rsp_queues, ha->max_req_queues);
3587
3588 msix_out:
3589         return ret;
3590
3591 free_irqs:
3592         pci_free_irq_vectors(ha->pdev);
3593         goto msix_out;
3594 }
3595
3596 int
3597 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
3598 {
3599         int ret = QLA_FUNCTION_FAILED;
3600         device_reg_t *reg = ha->iobase;
3601         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3602
3603         /* If possible, enable MSI-X. */
3604         if (ql2xenablemsix == 0 || (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
3605             !IS_QLA8432(ha) && !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha) &&
3606             !IS_QLAFX00(ha) && !IS_QLA27XX(ha) && !IS_QLA28XX(ha)))
3607                 goto skip_msi;
3608
3609         if (ql2xenablemsix == 2)
3610                 goto skip_msix;
3611
3612         if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
3613                 (ha->pdev->subsystem_device == 0x7040 ||
3614                 ha->pdev->subsystem_device == 0x7041 ||
3615                 ha->pdev->subsystem_device == 0x1705)) {
3616                 ql_log(ql_log_warn, vha, 0x0034,
3617                     "MSI-X: Unsupported ISP 2432 SSVID/SSDID (0x%X,0x%X).\n",
3618                         ha->pdev->subsystem_vendor,
3619                         ha->pdev->subsystem_device);
3620                 goto skip_msi;
3621         }
3622
3623         if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX)) {
3624                 ql_log(ql_log_warn, vha, 0x0035,
3625                     "MSI-X; Unsupported ISP2432 (0x%X, 0x%X).\n",
3626                     ha->pdev->revision, QLA_MSIX_CHIP_REV_24XX);
3627                 goto skip_msix;
3628         }
3629
3630         ret = qla24xx_enable_msix(ha, rsp);
3631         if (!ret) {
3632                 ql_dbg(ql_dbg_init, vha, 0x0036,
3633                     "MSI-X: Enabled (0x%X, 0x%X).\n",
3634                     ha->chip_revision, ha->fw_attributes);
3635                 goto clear_risc_ints;
3636         }
3637
3638 skip_msix:
3639
3640         ql_log(ql_log_info, vha, 0x0037,
3641             "Falling back-to MSI mode -- ret=%d.\n", ret);
3642
3643         if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
3644             !IS_QLA8001(ha) && !IS_P3P_TYPE(ha) && !IS_QLAFX00(ha) &&
3645             !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
3646                 goto skip_msi;
3647
3648         ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
3649         if (ret > 0) {
3650                 ql_dbg(ql_dbg_init, vha, 0x0038,
3651                     "MSI: Enabled.\n");
3652                 ha->flags.msi_enabled = 1;
3653         } else
3654                 ql_log(ql_log_warn, vha, 0x0039,
3655                     "Falling back-to INTa mode -- ret=%d.\n", ret);
3656 skip_msi:
3657
3658         /* Skip INTx on ISP82xx. */
3659         if (!ha->flags.msi_enabled && IS_QLA82XX(ha))
3660                 return QLA_FUNCTION_FAILED;
3661
3662         ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
3663             ha->flags.msi_enabled ? 0 : IRQF_SHARED,
3664             QLA2XXX_DRIVER_NAME, rsp);
3665         if (ret) {
3666                 ql_log(ql_log_warn, vha, 0x003a,
3667                     "Failed to reserve interrupt %d already in use.\n",
3668                     ha->pdev->irq);
3669                 goto fail;
3670         } else if (!ha->flags.msi_enabled) {
3671                 ql_dbg(ql_dbg_init, vha, 0x0125,
3672                     "INTa mode: Enabled.\n");
3673                 ha->flags.mr_intr_valid = 1;
3674         }
3675
3676 clear_risc_ints:
3677         if (IS_FWI2_CAPABLE(ha) || IS_QLAFX00(ha))
3678                 goto fail;
3679
3680         spin_lock_irq(&ha->hardware_lock);
3681         WRT_REG_WORD(&reg->isp.semaphore, 0);
3682         spin_unlock_irq(&ha->hardware_lock);
3683
3684 fail:
3685         return ret;
3686 }
3687
3688 void
3689 qla2x00_free_irqs(scsi_qla_host_t *vha)
3690 {
3691         struct qla_hw_data *ha = vha->hw;
3692         struct rsp_que *rsp;
3693         struct qla_msix_entry *qentry;
3694         int i;
3695
3696         /*
3697          * We need to check that ha->rsp_q_map is valid in case we are called
3698          * from a probe failure context.
3699          */
3700         if (!ha->rsp_q_map || !ha->rsp_q_map[0])
3701                 goto free_irqs;
3702         rsp = ha->rsp_q_map[0];
3703
3704         if (ha->flags.msix_enabled) {
3705                 for (i = 0; i < ha->msix_count; i++) {
3706                         qentry = &ha->msix_entries[i];
3707                         if (qentry->have_irq) {
3708                                 irq_set_affinity_notifier(qentry->vector, NULL);
3709                                 free_irq(pci_irq_vector(ha->pdev, i), qentry->handle);
3710                         }
3711                 }
3712                 kfree(ha->msix_entries);
3713                 ha->msix_entries = NULL;
3714                 ha->flags.msix_enabled = 0;
3715                 ql_dbg(ql_dbg_init, vha, 0x0042,
3716                         "Disabled MSI-X.\n");
3717         } else {
3718                 free_irq(pci_irq_vector(ha->pdev, 0), rsp);
3719         }
3720
3721 free_irqs:
3722         pci_free_irq_vectors(ha->pdev);
3723 }
3724
3725 int qla25xx_request_irq(struct qla_hw_data *ha, struct qla_qpair *qpair,
3726         struct qla_msix_entry *msix, int vector_type)
3727 {
3728         const struct qla_init_msix_entry *intr = &msix_entries[vector_type];
3729         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
3730         int ret;
3731
3732         scnprintf(msix->name, sizeof(msix->name),
3733             "qla2xxx%lu_qpair%d", vha->host_no, qpair->id);
3734         ret = request_irq(msix->vector, intr->handler, 0, msix->name, qpair);
3735         if (ret) {
3736                 ql_log(ql_log_fatal, vha, 0x00e6,
3737                     "MSI-X: Unable to register handler -- %x/%d.\n",
3738                     msix->vector, ret);
3739                 return ret;
3740         }
3741         msix->have_irq = 1;
3742         msix->handle = qpair;
3743         return ret;
3744 }