drivers/scsi/qla2xxx/qla_isr.c

   1 /*
   2  *                  QLOGIC LINUX SOFTWARE
   3  *
   4  * QLogic ISP2x00 device driver for Linux 2.6.x
   5  * Copyright (C) 2003-2004 QLogic Corporation
   6  * (www.qlogic.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  */
  19 #include "qla_def.h"
  20
  21 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
  22 static void qla2x00_async_event(scsi_qla_host_t *, uint32_t);
  23 static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
  24 void qla2x00_process_response_queue(struct scsi_qla_host *);
  25 static void qla2x00_status_entry(scsi_qla_host_t *, sts_entry_t *);
  26 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
  27 static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
  28 static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
  29
  30 /**
  31  * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
  32  * @irq:
  33  * @dev_id: SCSI driver HA context
  34  * @regs:
  35  *
  36  * Called by system whenever the host adapter generates an interrupt.
  37  *
  38  * Returns handled flag.
  39  */
  40 irqreturn_t
  41 qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
  42 {
  43         scsi_qla_host_t *ha;
  44         device_reg_t __iomem *reg;
  45         int             status;
  46         unsigned long   flags;
  47         unsigned long   iter;
  48         uint32_t        mbx;
  49
  50         ha = (scsi_qla_host_t *) dev_id;
  51         if (!ha) {
  52                 printk(KERN_INFO
  53                     "%s(): NULL host pointer\n", __func__);
  54                 return (IRQ_NONE);
  55         }
  56
  57         reg = ha->iobase;
  58         status = 0;
  59
  60         spin_lock_irqsave(&ha->hardware_lock, flags);
  61         for (iter = 50; iter--; ) {
  62                 if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
  63                         break;
  64
  65                 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
  66                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  67                         RD_REG_WORD(&reg->hccr);
  68
  69                         /* Get mailbox data. */
  70                         mbx = RD_MAILBOX_REG(ha, reg, 0);
  71                         if (mbx > 0x3fff && mbx < 0x8000) {
  72                                 qla2x00_mbx_completion(ha, (uint16_t)mbx);
  73                                 status |= MBX_INTERRUPT;
  74                         } else if (mbx > 0x7fff && mbx < 0xc000) {
  75                                 qla2x00_async_event(ha, mbx);
  76                         } else {
  77                                 /*EMPTY*/
  78                                 DEBUG2(printk("scsi(%ld): Unrecognized "
  79                                     "interrupt type (%d)\n",
  80                                     ha->host_no, mbx));
  81                         }
  82                         /* Release mailbox registers. */
  83                         WRT_REG_WORD(&reg->semaphore, 0);
  84                         RD_REG_WORD(&reg->semaphore);
  85                 } else {
  86                         qla2x00_process_response_queue(ha);
  87
  88                         WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
  89                         RD_REG_WORD(&reg->hccr);
  90                 }
  91         }
  92         spin_unlock_irqrestore(&ha->hardware_lock, flags);
  93
  94         ha->last_irq_cpu = _smp_processor_id();
  95         ha->total_isr_cnt++;
  96
  97         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
  98             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
  99                 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
 100
 101                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 102                 up(&ha->mbx_intr_sem);
 103
 104                 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
 105         }
 106
 107         return (IRQ_HANDLED);
 108 }
 109
 110 /**
 111  * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
 112  * @irq:
 113  * @dev_id: SCSI driver HA context
 114  * @regs:
 115  *
 116  * Called by system whenever the host adapter generates an interrupt.
 117  *
 118  * Returns handled flag.
 119  */
 120 irqreturn_t
 121 qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
 122 {
 123         scsi_qla_host_t *ha;
 124         device_reg_t __iomem *reg;
 125         int             status;
 126         unsigned long   flags;
 127         unsigned long   iter;
 128         uint32_t        stat;
 129         uint32_t        mbx;
 130         uint16_t        hccr;
 131
 132         ha = (scsi_qla_host_t *) dev_id;
 133         if (!ha) {
 134                 printk(KERN_INFO
 135                     "%s(): NULL host pointer\n", __func__);
 136                 return (IRQ_NONE);
 137         }
 138
 139         reg = ha->iobase;
 140         status = 0;
 141
 142         spin_lock_irqsave(&ha->hardware_lock, flags);
 143         for (iter = 50; iter--; ) {
 144                 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
 145                 if (stat & HSR_RISC_PAUSED) {
 146                         hccr = RD_REG_WORD(&reg->hccr);
 147                         if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
 148                                 qla_printk(KERN_INFO, ha,
 149                                     "Parity error -- HCCR=%x.\n", hccr);
 150                         else
 151                                 qla_printk(KERN_INFO, ha,
 152                                     "RISC paused -- HCCR=%x\n", hccr);
 153
 154                         /*
 155                          * Issue a "HARD" reset in order for the RISC
 156                          * interrupt bit to be cleared.  Schedule a big
 157                          * hammmer to get out of the RISC PAUSED state.
 158                          */
 159                         WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
 160                         RD_REG_WORD(&reg->hccr);
 161                         set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 162                         break;
 163                 } else if ((stat & HSR_RISC_INT) == 0)
 164                         break;
 165
 166                 mbx = MSW(stat);
 167                 switch (stat & 0xff) {
 168                 case 0x13:
 169                         qla2x00_process_response_queue(ha);
 170                         break;
 171                 case 0x1:
 172                 case 0x2:
 173                 case 0x10:
 174                 case 0x11:
 175                         qla2x00_mbx_completion(ha, (uint16_t)mbx);
 176                         status |= MBX_INTERRUPT;
 177
 178                         /* Release mailbox registers. */
 179                         WRT_REG_WORD(&reg->semaphore, 0);
 180                         break;
 181                 case 0x12:
 182                         qla2x00_async_event(ha, mbx);
 183                         break;
 184                 case 0x15:
 185                         mbx = mbx << 16 | MBA_CMPLT_1_16BIT;
 186                         qla2x00_async_event(ha, mbx);
 187                         break;
 188                 case 0x16:
 189                         mbx = mbx << 16 | MBA_SCSI_COMPLETION;
 190                         qla2x00_async_event(ha, mbx);
 191                         break;
 192                 default:
 193                         DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
 194                             "(%d)\n",
 195                             ha->host_no, stat & 0xff));
 196                         break;
 197                 }
 198                 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
 199                 RD_REG_WORD_RELAXED(&reg->hccr);
 200         }
 201         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 202
 203         ha->last_irq_cpu = _smp_processor_id();
 204         ha->total_isr_cnt++;
 205
 206         if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
 207             (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
 208                 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
 209
 210                 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
 211                 up(&ha->mbx_intr_sem);
 212
 213                 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
 214         }
 215
 216         return (IRQ_HANDLED);
 217 }
 218
 219 /**
 220  * qla2x00_mbx_completion() - Process mailbox command completions.
 221  * @ha: SCSI driver HA context
 222  * @mb0: Mailbox0 register
 223  */
 224 static void
 225 qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
 226 {
 227         uint16_t        cnt;
 228         uint16_t __iomem *wptr;
 229         device_reg_t __iomem *reg = ha->iobase;
 230
 231         /* Load return mailbox registers. */
 232         ha->flags.mbox_int = 1;
 233         ha->mailbox_out[0] = mb0;
 234         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
 235
 236         for (cnt = 1; cnt < ha->mbx_count; cnt++) {
 237                 if (IS_QLA2200(ha) && cnt == 8)
 238                         wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
 239                 if (cnt == 4 || cnt == 5)
 240                         ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
 241                 else
 242                         ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
 243
 244                 wptr++;
 245         }
 246
 247         if (ha->mcp) {
 248                 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
 249                     __func__, ha->host_no, ha->mcp->mb[0]));
 250         } else {
 251                 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
 252                     __func__, ha->host_no));
 253         }
 254 }
 255
 256 /**
 257  * qla2x00_async_event() - Process aynchronous events.
 258  * @ha: SCSI driver HA context
 259  * @mb0: Mailbox0 register
 260  */
 261 static void
 262 qla2x00_async_event(scsi_qla_host_t *ha, uint32_t mbx)
 263 {
 264         static char     *link_speeds[5] = { "1", "2", "4", "?", "10" };
 265         char            *link_speed;
 266         uint16_t        mb[4];
 267         uint16_t        handle_cnt;
 268         uint16_t        cnt;
 269         uint32_t        handles[5];
 270         device_reg_t __iomem *reg = ha->iobase;
 271         uint32_t        rscn_entry, host_pid;
 272         uint8_t         rscn_queue_index;
 273
 274         /* Setup to process RIO completion. */
 275         handle_cnt = 0;
 276         mb[0] = LSW(mbx);
 277         switch (mb[0]) {
 278         case MBA_SCSI_COMPLETION:
 279                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 280                         handles[0] = le32_to_cpu(
 281                             ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
 282                             RD_MAILBOX_REG(ha, reg, 1));
 283                 else
 284                         handles[0] = le32_to_cpu(
 285                             ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
 286                             MSW(mbx));
 287                 handle_cnt = 1;
 288                 break;
 289         case MBA_CMPLT_1_16BIT:
 290                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 291                         handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 292                 else
 293                         handles[0] = MSW(mbx);
 294                 handle_cnt = 1;
 295                 mb[0] = MBA_SCSI_COMPLETION;
 296                 break;
 297         case MBA_CMPLT_2_16BIT:
 298                 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 299                 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
 300                 handle_cnt = 2;
 301                 mb[0] = MBA_SCSI_COMPLETION;
 302                 break;
 303         case MBA_CMPLT_3_16BIT:
 304                 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 305                 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
 306                 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
 307                 handle_cnt = 3;
 308                 mb[0] = MBA_SCSI_COMPLETION;
 309                 break;
 310         case MBA_CMPLT_4_16BIT:
 311                 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 312                 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
 313                 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
 314                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 315                 handle_cnt = 4;
 316                 mb[0] = MBA_SCSI_COMPLETION;
 317                 break;
 318         case MBA_CMPLT_5_16BIT:
 319                 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
 320                 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
 321                 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
 322                 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
 323                 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
 324                 handle_cnt = 5;
 325                 mb[0] = MBA_SCSI_COMPLETION;
 326                 break;
 327         case MBA_CMPLT_2_32BIT:
 328                 handles[0] = le32_to_cpu(
 329                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
 330                     RD_MAILBOX_REG(ha, reg, 1));
 331                 handles[1] = le32_to_cpu(
 332                     ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
 333                     RD_MAILBOX_REG(ha, reg, 6));
 334                 handle_cnt = 2;
 335                 mb[0] = MBA_SCSI_COMPLETION;
 336                 break;
 337         default:
 338                 break;
 339         }
 340
 341         switch (mb[0]) {
 342         case MBA_SCSI_COMPLETION:       /* Fast Post */
 343                 if (!ha->flags.online)
 344                         break;
 345
 346                 for (cnt = 0; cnt < handle_cnt; cnt++)
 347                         qla2x00_process_completed_request(ha, handles[cnt]);
 348                 break;
 349
 350         case MBA_RESET:                 /* Reset */
 351                 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
 352
 353                 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 354                 break;
 355
 356         case MBA_SYSTEM_ERR:            /* System Error */
 357                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 358                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 359                 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
 360
 361                 qla_printk(KERN_INFO, ha,
 362                     "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
 363                     mb[1], mb[2], mb[3]);
 364
 365                 if (IS_QLA2100(ha) || IS_QLA2200(ha))
 366                         qla2100_fw_dump(ha, 1);
 367                 else
 368                         qla2300_fw_dump(ha, 1);
 369
 370                 if (mb[1] == 0) {
 371                         qla_printk(KERN_INFO, ha,
 372                             "Unrecoverable Hardware Error: adapter marked "
 373                             "OFFLINE!\n");
 374                         ha->flags.online = 0;
 375                 } else
 376                         set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 377                 break;
 378
 379         case MBA_REQ_TRANSFER_ERR:      /* Request Transfer Error */
 380                 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
 381                     ha->host_no));
 382                 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
 383
 384                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 385                 break;
 386
 387         case MBA_RSP_TRANSFER_ERR:      /* Response Transfer Error */
 388                 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
 389                     ha->host_no));
 390                 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
 391
 392                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 393                 break;
 394
 395         case MBA_WAKEUP_THRES:          /* Request Queue Wake-up */
 396                 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
 397                     ha->host_no));
 398                 break;
 399
 400         case MBA_LIP_OCCURRED:          /* Loop Initialization Procedure */
 401                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 402
 403                 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
 404                     mb[1]));
 405                 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
 406
 407                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 408                         atomic_set(&ha->loop_state, LOOP_DOWN);
 409                         atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
 410                         qla2x00_mark_all_devices_lost(ha);
 411                 }
 412
 413                 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
 414
 415                 ha->flags.management_server_logged_in = 0;
 416
 417                 /* Update AEN queue. */
 418                 qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL);
 419
 420                 ha->total_lip_cnt++;
 421                 break;
 422
 423         case MBA_LOOP_UP:               /* Loop Up Event */
 424                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 425
 426                 ha->link_data_rate = 0;
 427                 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
 428                         link_speed = link_speeds[0];
 429                 } else {
 430                         link_speed = link_speeds[3];
 431                         if (mb[1] < 5)
 432                                 link_speed = link_speeds[mb[1]];
 433                         ha->link_data_rate = mb[1];
 434                 }
 435
 436                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
 437                     ha->host_no, link_speed));
 438                 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
 439                     link_speed);
 440
 441                 ha->flags.management_server_logged_in = 0;
 442
 443                 /* Update AEN queue. */
 444                 qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL);
 445                 break;
 446
 447         case MBA_LOOP_DOWN:             /* Loop Down Event */
 448                 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN.\n",
 449                     ha->host_no));
 450                 qla_printk(KERN_INFO, ha, "LOOP DOWN detected.\n");
 451
 452                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 453                         atomic_set(&ha->loop_state, LOOP_DOWN);
 454                         atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
 455                         ha->device_flags |= DFLG_NO_CABLE;
 456                         qla2x00_mark_all_devices_lost(ha);
 457                 }
 458
 459                 ha->flags.management_server_logged_in = 0;
 460                 ha->link_data_rate = 0;
 461
 462                 /* Update AEN queue. */
 463                 qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL);
 464                 break;
 465
 466         case MBA_LIP_RESET:             /* LIP reset occurred */
 467                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 468
 469                 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
 470                     ha->host_no, mb[1]));
 471                 qla_printk(KERN_INFO, ha,
 472                     "LIP reset occured (%x).\n", mb[1]);
 473
 474                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 475                         atomic_set(&ha->loop_state, LOOP_DOWN);
 476                         atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
 477                         qla2x00_mark_all_devices_lost(ha);
 478                 }
 479
 480                 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 481
 482                 ha->operating_mode = LOOP;
 483                 ha->flags.management_server_logged_in = 0;
 484
 485                 /* Update AEN queue. */
 486                 qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL);
 487
 488                 ha->total_lip_cnt++;
 489                 break;
 490
 491         case MBA_POINT_TO_POINT:        /* Point-to-Point */
 492                 if (IS_QLA2100(ha))
 493                         break;
 494
 495                 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
 496                     ha->host_no));
 497
 498                 /*
 499                  * Until there's a transition from loop down to loop up, treat
 500                  * this as loop down only.
 501                  */
 502                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 503                         atomic_set(&ha->loop_state, LOOP_DOWN);
 504                         if (!atomic_read(&ha->loop_down_timer))
 505                                 atomic_set(&ha->loop_down_timer,
 506                                     LOOP_DOWN_TIME);
 507                         qla2x00_mark_all_devices_lost(ha);
 508                 }
 509
 510                 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
 511                         set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
 512                 }
 513                 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
 514                 break;
 515
 516         case MBA_CHG_IN_CONNECTION:     /* Change in connection mode */
 517                 if (IS_QLA2100(ha))
 518                         break;
 519
 520                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 521
 522                 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
 523                     "received.\n",
 524                     ha->host_no));
 525                 qla_printk(KERN_INFO, ha,
 526                     "Configuration change detected: value=%x.\n", mb[1]);
 527
 528                 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
 529                         atomic_set(&ha->loop_state, LOOP_DOWN);
 530                         if (!atomic_read(&ha->loop_down_timer))
 531                                 atomic_set(&ha->loop_down_timer,
 532                                     LOOP_DOWN_TIME);
 533                         qla2x00_mark_all_devices_lost(ha);
 534                 }
 535
 536                 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
 537                 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
 538                 break;
 539
 540         case MBA_PORT_UPDATE:           /* Port database update */
 541                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 542                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 543
 544                 /*
 545                  * If a single remote port just logged into (or logged out of)
 546                  * us, create a new entry in our rscn fcports list and handle
 547                  * the event like an RSCN.
 548                  */
 549                 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
 550                     !IS_QLA6322(ha) && ha->flags.init_done && mb[1] != 0xffff &&
 551                     ((ha->operating_mode == P2P && mb[1] != 0) ||
 552                     (ha->operating_mode != P2P && mb[1] !=
 553                         SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
 554                         int rval;
 555                         fc_port_t *rscn_fcport;
 556
 557                         /* Create new fcport for login. */
 558                         rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
 559                         if (rscn_fcport) {
 560                                 DEBUG14(printk("scsi(%ld): Port Update -- "
 561                                     "creating RSCN fcport %p for %x/%x.\n",
 562                                     ha->host_no, rscn_fcport, mb[1], mb[2]));
 563
 564                                 rscn_fcport->loop_id = mb[1];
 565                                 rscn_fcport->d_id.b24 = INVALID_PORT_ID;
 566                                 atomic_set(&rscn_fcport->state,
 567                                     FCS_DEVICE_LOST);
 568                                 list_add_tail(&rscn_fcport->list,
 569                                     &ha->rscn_fcports);
 570
 571                                 rval = qla2x00_handle_port_rscn(ha, 0,
 572                                     rscn_fcport, 1);
 573                                 if (rval == QLA_SUCCESS)
 574                                         break;
 575                         } else {
 576                                 DEBUG14(printk("scsi(%ld): Port Update -- "
 577                                     "-- unable to allocate RSCN fcport "
 578                                     "login.\n", ha->host_no));
 579                         }
 580                 }
 581
 582                 /*
 583                  * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
 584                  * event etc. earlier indicating loop is down) then process
 585                  * it.  Otherwise ignore it and Wait for RSCN to come in.
 586                  */
 587                 atomic_set(&ha->loop_down_timer, 0);
 588                 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
 589                     atomic_read(&ha->loop_state) != LOOP_DEAD) {
 590                         DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
 591                             "ignored.\n", ha->host_no));
 592                         break;
 593                 }
 594
 595                 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
 596                     ha->host_no));
 597                 DEBUG(printk(KERN_INFO
 598                     "scsi(%ld): Port database changed %04x %04x.\n",
 599                     ha->host_no, mb[1], mb[2]));
 600
 601                 /*
 602                  * Mark all devices as missing so we will login again.
 603                  */
 604                 atomic_set(&ha->loop_state, LOOP_UP);
 605
 606                 qla2x00_mark_all_devices_lost(ha);
 607
 608                 ha->flags.rscn_queue_overflow = 1;
 609
 610                 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
 611                 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
 612
 613                 /* Update AEN queue. */
 614                 qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
 615                 break;
 616
 617         case MBA_RSCN_UPDATE:           /* State Change Registration */
 618                 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
 619                 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
 620
 621                 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
 622                     ha->host_no));
 623                 DEBUG(printk(KERN_INFO
 624                     "scsi(%ld): RSCN database changed -- %04x %04x.\n",
 625                     ha->host_no, mb[1], mb[2]));
 626
 627                 rscn_entry = (mb[1] << 16) | mb[2];
 628                 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
 629                     ha->d_id.b.al_pa;
 630                 if (rscn_entry == host_pid) {
 631                         DEBUG(printk(KERN_INFO
 632                             "scsi(%ld): Ignoring RSCN update to local host "
 633                             "port ID (%06x)\n",
 634                             ha->host_no, host_pid));
 635                         break;
 636                 }
 637
 638                 rscn_queue_index = ha->rscn_in_ptr + 1;
 639                 if (rscn_queue_index == MAX_RSCN_COUNT)
 640                         rscn_queue_index = 0;
 641                 if (rscn_queue_index != ha->rscn_out_ptr) {
 642                         ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
 643                         ha->rscn_in_ptr = rscn_queue_index;
 644                 } else {
 645                         ha->flags.rscn_queue_overflow = 1;
 646                 }
 647
 648                 atomic_set(&ha->loop_state, LOOP_UPDATE);
 649                 atomic_set(&ha->loop_down_timer, 0);
 650                 ha->flags.management_server_logged_in = 0;
 651
 652                 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
 653                 set_bit(RSCN_UPDATE, &ha->dpc_flags);
 654
 655                 /* Update AEN queue. */
 656                 qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
 657                 break;
 658
 659         /* case MBA_RIO_RESPONSE: */
 660         case MBA_ZIO_RESPONSE:
 661                 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
 662                     ha->host_no));
 663                 DEBUG(printk(KERN_INFO
 664                     "scsi(%ld): [R|Z]IO update completion.\n",
 665                     ha->host_no));
 666
 667                 qla2x00_process_response_queue(ha);
 668                 break;
 669         }
 670 }
 671
 672 /**
 673  * qla2x00_process_completed_request() - Process a Fast Post response.
 674  * @ha: SCSI driver HA context
 675  * @index: SRB index
 676  */
 677 static void
 678 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
 679 {
 680         srb_t *sp;
 681
 682         /* Validate handle. */
 683         if (index >= MAX_OUTSTANDING_COMMANDS) {
 684                 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
 685                     ha->host_no, index));
 686                 qla_printk(KERN_WARNING, ha,
 687                     "Invalid SCSI completion handle %d.\n", index);
 688
 689                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 690                 return;
 691         }
 692
 693         sp = ha->outstanding_cmds[index];
 694         if (sp) {
 695                 /* Free outstanding command slot. */
 696                 ha->outstanding_cmds[index] = NULL;
 697
 698                 if (ha->actthreads)
 699                         ha->actthreads--;
 700                 sp->lun_queue->out_cnt--;
 701                 CMD_COMPL_STATUS(sp->cmd) = 0L;
 702                 CMD_SCSI_STATUS(sp->cmd) = 0L;
 703
 704                 /* Save ISP completion status */
 705                 sp->cmd->result = DID_OK << 16;
 706                 sp->fo_retry_cnt = 0;
 707                 qla2x00_sp_compl(ha, sp);
 708         } else {
 709                 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
 710                     ha->host_no));
 711                 qla_printk(KERN_WARNING, ha,
 712                     "Invalid ISP SCSI completion handle\n");
 713
 714                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 715         }
 716 }
 717
 718 /**
 719  * qla2x00_process_response_queue() - Process response queue entries.
 720  * @ha: SCSI driver HA context
 721  */
 722 void
 723 qla2x00_process_response_queue(struct scsi_qla_host *ha)
 724 {
 725         device_reg_t __iomem *reg = ha->iobase;
 726         sts_entry_t     *pkt;
 727         uint16_t        handle_cnt;
 728         uint16_t        cnt;
 729
 730         if (!ha->flags.online)
 731                 return;
 732
 733         while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
 734                 pkt = (sts_entry_t *)ha->response_ring_ptr;
 735
 736                 ha->rsp_ring_index++;
 737                 if (ha->rsp_ring_index == ha->response_q_length) {
 738                         ha->rsp_ring_index = 0;
 739                         ha->response_ring_ptr = ha->response_ring;
 740                 } else {
 741                         ha->response_ring_ptr++;
 742                 }
 743
 744                 if (pkt->entry_status != 0) {
 745                         DEBUG3(printk(KERN_INFO
 746                             "scsi(%ld): Process error entry.\n", ha->host_no));
 747
 748                         qla2x00_error_entry(ha, pkt);
 749                         ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
 750                         wmb();
 751                         continue;
 752                 }
 753
 754                 switch (pkt->entry_type) {
 755                 case STATUS_TYPE:
 756                         qla2x00_status_entry(ha, pkt);
 757                         break;
 758                 case STATUS_TYPE_21:
 759                         handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
 760                         for (cnt = 0; cnt < handle_cnt; cnt++) {
 761                                 qla2x00_process_completed_request(ha,
 762                                     ((sts21_entry_t *)pkt)->handle[cnt]);
 763                         }
 764                         break;
 765                 case STATUS_TYPE_22:
 766                         handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
 767                         for (cnt = 0; cnt < handle_cnt; cnt++) {
 768                                 qla2x00_process_completed_request(ha,
 769                                     ((sts22_entry_t *)pkt)->handle[cnt]);
 770                         }
 771                         break;
 772                 case STATUS_CONT_TYPE:
 773                         qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
 774                         break;
 775                 case MS_IOCB_TYPE:
 776                         qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
 777                         break;
 778                 case MBX_IOCB_TYPE:
 779                         if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
 780                             !IS_QLA6312(ha) && !IS_QLA6322(ha)) {
 781                                 if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
 782                                         qla2x00_process_iodesc(ha,
 783                                             (struct mbx_entry *)pkt);
 784                                 } else {
 785                                         /* MBX IOCB Type Not Supported. */
 786                                         DEBUG4(printk(KERN_WARNING
 787                                             "scsi(%ld): Received unknown MBX "
 788                                             "IOCB response pkt type=%x "
 789                                             "source=%x entry status=%x.\n",
 790                                             ha->host_no, pkt->entry_type,
 791                                             pkt->sys_define,
 792                                             pkt->entry_status));
 793                                 }
 794                                 break;
 795                         }
 796                         /* Fallthrough. */
 797                 default:
 798                         /* Type Not Supported. */
 799                         DEBUG4(printk(KERN_WARNING
 800                             "scsi(%ld): Received unknown response pkt type %x "
 801                             "entry status=%x.\n",
 802                             ha->host_no, pkt->entry_type, pkt->entry_status));
 803                         break;
 804                 }
 805                 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
 806                 wmb();
 807         }
 808
 809         /* Adjust ring index */
 810         WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
 811 }
 812
 813 /**
 814  * qla2x00_status_entry() - Process a Status IOCB entry.
 815  * @ha: SCSI driver HA context
 816  * @pkt: Entry pointer
 817  */
 818 static void
 819 qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
 820 {
 821         int             ret;
 822         unsigned        b, t, l;
 823         srb_t           *sp;
 824         os_lun_t        *lq;
 825         os_tgt_t        *tq;
 826         fc_port_t       *fcport;
 827         struct scsi_cmnd *cp;
 828         uint16_t        comp_status;
 829         uint16_t        scsi_status;
 830         uint8_t         lscsi_status;
 831         int32_t         resid;
 832         uint8_t         sense_sz = 0;
 833         uint16_t        rsp_info_len;
 834
 835         /* Fast path completion. */
 836         if (le16_to_cpu(pkt->comp_status) == CS_COMPLETE &&
 837             (le16_to_cpu(pkt->scsi_status) & SS_MASK) == 0) {
 838                 qla2x00_process_completed_request(ha, pkt->handle);
 839
 840                 return;
 841         }
 842
 843         /* Validate handle. */
 844         if (pkt->handle < MAX_OUTSTANDING_COMMANDS) {
 845                 sp = ha->outstanding_cmds[pkt->handle];
 846                 ha->outstanding_cmds[pkt->handle] = NULL;
 847         } else
 848                 sp = NULL;
 849
 850         if (sp == NULL) {
 851                 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
 852                     ha->host_no));
 853                 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
 854
 855                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 856                 if (ha->dpc_wait && !ha->dpc_active)
 857                         up(ha->dpc_wait);
 858
 859                 return;
 860         }
 861         cp = sp->cmd;
 862         if (cp == NULL) {
 863                 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
 864                     "pkt->handle=%d sp=%p sp->state:%d\n",
 865                     ha->host_no, pkt->handle, sp, sp->state));
 866                 qla_printk(KERN_WARNING, ha,
 867                     "Command is NULL: already returned to OS (sp=%p)\n", sp);
 868
 869                 return;
 870         }
 871
 872         if (ha->actthreads)
 873                 ha->actthreads--;
 874
 875         if (sp->lun_queue == NULL) {
 876                 DEBUG2(printk("scsi(%ld): Status Entry invalid lun pointer.\n",
 877                     ha->host_no));
 878                 qla_printk(KERN_WARNING, ha,
 879                     "Status Entry invalid lun pointer.\n");
 880
 881                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
 882                 if (ha->dpc_wait && !ha->dpc_active)
 883                         up(ha->dpc_wait);
 884
 885                 return;
 886         }
 887
 888         sp->lun_queue->out_cnt--;
 889
 890         comp_status = le16_to_cpu(pkt->comp_status);
 891         /* Mask of reserved bits 12-15, before we examine the scsi status */
 892         scsi_status = le16_to_cpu(pkt->scsi_status) & SS_MASK;
 893         lscsi_status = scsi_status & STATUS_MASK;
 894
 895         CMD_ENTRY_STATUS(cp) = pkt->entry_status;
 896         CMD_COMPL_STATUS(cp) = comp_status;
 897         CMD_SCSI_STATUS(cp) = scsi_status;
 898
 899         /* Generate LU queue on cntrl, target, LUN */
 900         b = cp->device->channel;
 901         t = cp->device->id;
 902         l = cp->device->lun,
 903
 904         tq = sp->tgt_queue;
 905         lq = sp->lun_queue;
 906
 907         /* Check for any FCP transport errors. */
 908         if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
 909                 rsp_info_len = le16_to_cpu(pkt->rsp_info_len);
 910                 if (rsp_info_len > 3 && pkt->rsp_info[3]) {
 911                         DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
 912                             "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
 913                             "retrying command\n", ha->host_no, b, t, l,
 914                             rsp_info_len, pkt->rsp_info[0], pkt->rsp_info[1],
 915                             pkt->rsp_info[2], pkt->rsp_info[3],
 916                             pkt->rsp_info[4], pkt->rsp_info[5],
 917                             pkt->rsp_info[6], pkt->rsp_info[7]));
 918
 919                         cp->result = DID_BUS_BUSY << 16;
 920                         qla2x00_sp_compl(ha, sp);
 921                         return;
 922                 }
 923         }
 924
 925         /*
 926          * Based on Host and scsi status generate status code for Linux
 927          */
 928         switch (comp_status) {
 929         case CS_COMPLETE:
 930                 if (scsi_status == 0) {
 931                         cp->result = DID_OK << 16;
 932                         break;
 933                 }
 934                 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
 935                         resid = le32_to_cpu(pkt->residual_length);
 936                         cp->resid = resid;
 937                         CMD_RESID_LEN(cp) = resid;
 938                 }
 939                 cp->result = DID_OK << 16 | lscsi_status;
 940
 941                 if (lscsi_status != SS_CHECK_CONDITION)
 942                         break;
 943
 944                 /*
 945                  * Copy Sense Data into sense buffer
 946                  */
 947                 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
 948
 949                 if (!(scsi_status & SS_SENSE_LEN_VALID))
 950                         break;
 951
 952                 if (le16_to_cpu(pkt->req_sense_length) <
 953                     sizeof(cp->sense_buffer))
 954                         sense_sz = le16_to_cpu(pkt->req_sense_length);
 955                 else
 956                         sense_sz = sizeof(cp->sense_buffer);
 957
 958                 CMD_ACTUAL_SNSLEN(cp) = sense_sz;
 959                 sp->request_sense_length = sense_sz;
 960                 sp->request_sense_ptr = cp->sense_buffer;
 961
 962                 if (sp->request_sense_length > 32)
 963                         sense_sz = 32;
 964
 965                 memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
 966
 967                 sp->request_sense_ptr += sense_sz;
 968                 sp->request_sense_length -= sense_sz;
 969                 if (sp->request_sense_length != 0)
 970                         ha->status_srb = sp;
 971
 972                 DEBUG5(printk("%s(): Check condition Sense data, "
 973                     "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
 974                     __func__, ha->host_no, b, t, l, cp,
 975                     cp->serial_number));
 976                 if (sense_sz)
 977                         DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
 978                             CMD_ACTUAL_SNSLEN(cp)));
 979                 break;
 980
 981         case CS_DATA_UNDERRUN:
 982                 DEBUG2(printk(KERN_INFO
 983                     "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n",
 984                     ha->host_no, t, l, comp_status, scsi_status));
 985
 986                 resid = le32_to_cpu(pkt->residual_length);
 987                 if (scsi_status & SS_RESIDUAL_UNDER) {
 988                         cp->resid = resid;
 989                         CMD_RESID_LEN(cp) = resid;
 990                 }
 991
 992                 /*
 993                  * Check to see if SCSI Status is non zero. If so report SCSI
 994                  * Status.
 995                  */
 996                 if (lscsi_status != 0) {
 997                         cp->result = DID_OK << 16 | lscsi_status;
 998
 999                         if (lscsi_status != SS_CHECK_CONDITION)
1000                                 break;
1001
1002                         /* Copy Sense Data into sense buffer */
1003                         memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
1004
1005                         if (!(scsi_status & SS_SENSE_LEN_VALID))
1006                                 break;
1007
1008                         if (le16_to_cpu(pkt->req_sense_length) <
1009                             sizeof(cp->sense_buffer))
1010                                 sense_sz = le16_to_cpu(pkt->req_sense_length);
1011                         else
1012                                 sense_sz = sizeof(cp->sense_buffer);
1013
1014                         CMD_ACTUAL_SNSLEN(cp) = sense_sz;
1015                         sp->request_sense_length = sense_sz;
1016                         sp->request_sense_ptr = cp->sense_buffer;
1017
1018                         if (sp->request_sense_length > 32)
1019                                 sense_sz = 32;
1020
1021                         memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
1022
1023                         sp->request_sense_ptr += sense_sz;
1024                         sp->request_sense_length -= sense_sz;
1025                         if (sp->request_sense_length != 0)
1026                                 ha->status_srb = sp;
1027
1028                         DEBUG5(printk("%s(): Check condition Sense data, "
1029                             "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
1030                             __func__, ha->host_no, b, t, l, cp,
1031                             cp->serial_number));
1032                         if (sense_sz)
1033                                 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1034                                     CMD_ACTUAL_SNSLEN(cp)));
1035                 } else {
1036                         /*
1037                          * If RISC reports underrun and target does not report
1038                          * it then we must have a lost frame, so tell upper
1039                          * layer to retry it by reporting a bus busy.
1040                          */
1041                         if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1042                                 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1043                                     "frame(s) detected (%x of %x bytes)..."
1044                                     "retrying command.\n",
1045                                     ha->host_no, b, t, l, resid,
1046                                     cp->request_bufflen));
1047
1048                                 cp->result = DID_BUS_BUSY << 16;
1049                                 ha->dropped_frame_error_cnt++;
1050                                 break;
1051                         }
1052
1053                         /* Handle mid-layer underflow */
1054                         if ((unsigned)(cp->request_bufflen - resid) <
1055                             cp->underflow) {
1056                                 qla_printk(KERN_INFO, ha,
1057                                     "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1058                                     "detected (%x of %x bytes)...returning "
1059                                     "error status.\n",
1060                                     ha->host_no, b, t, l, resid,
1061                                     cp->request_bufflen);
1062
1063                                 cp->result = DID_ERROR << 16;
1064                                 break;
1065                         }
1066
1067                         /* Everybody online, looking good... */
1068                         cp->result = DID_OK << 16;
1069                 }
1070                 break;
1071
1072         case CS_DATA_OVERRUN:
1073                 DEBUG2(printk(KERN_INFO
1074                     "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1075                     ha->host_no, t, l, comp_status, scsi_status));
1076                 DEBUG2(printk(KERN_INFO
1077                     "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1078                     cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1079                     cp->cmnd[4], cp->cmnd[5]));
1080                 DEBUG2(printk(KERN_INFO
1081                     "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1082                     "status!\n",
1083                     cp->serial_number, cp->request_bufflen,
1084                     le32_to_cpu(pkt->residual_length)));
1085
1086                 cp->result = DID_ERROR << 16;
1087                 break;
1088
1089         case CS_PORT_LOGGED_OUT:
1090         case CS_PORT_CONFIG_CHG:
1091         case CS_PORT_BUSY:
1092         case CS_INCOMPLETE:
1093         case CS_PORT_UNAVAILABLE:
1094                 /*
1095                  * If the port is in Target Down state, return all IOs for this
1096                  * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1097                  * retry_queue.
1098                  */
1099                 fcport = sp->fclun->fcport;
1100                 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1101                     "pid=%ld, compl status=0x%x, port state=0x%x\n",
1102                     ha->host_no, t, l, cp->serial_number, comp_status,
1103                     atomic_read(&fcport->state)));
1104
1105                 cp->result = DID_BUS_BUSY << 16;
1106                 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1107                         qla2x00_mark_device_lost(ha, fcport, 1);
1108                 }
1109                 break;
1110
1111         case CS_RESET:
1112                 DEBUG2(printk(KERN_INFO
1113                     "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1114                     ha->host_no, comp_status, scsi_status));
1115
1116                 cp->result = DID_RESET << 16;
1117                 break;
1118
1119         case CS_ABORTED:
1120                 /*
1121                  * hv2.19.12 - DID_ABORT does not retry the request if we
1122                  * aborted this request then abort otherwise it must be a
1123                  * reset.
1124                  */
1125                 DEBUG2(printk(KERN_INFO
1126                     "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1127                     ha->host_no, comp_status, scsi_status));
1128
1129                 cp->result = DID_RESET << 16;
1130                 break;
1131
1132         case CS_TIMEOUT:
1133                 DEBUG2(printk(KERN_INFO
1134                     "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1135                     "sflags=%x.\n", ha->host_no, b, t, l, comp_status,
1136                     scsi_status, le16_to_cpu(pkt->status_flags)));
1137
1138                 cp->result = DID_BUS_BUSY << 16;
1139
1140                 fcport = lq->fclun->fcport;
1141
1142                 /* Check to see if logout occurred */
1143                 if ((le16_to_cpu(pkt->status_flags) & SF_LOGOUT_SENT)) {
1144                         qla2x00_mark_device_lost(ha, fcport, 1);
1145                 }
1146                 break;
1147
1148         case CS_QUEUE_FULL:
1149                 DEBUG2(printk(KERN_INFO
1150                     "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1151                     ha->host_no, comp_status, scsi_status));
1152
1153                 /* SCSI Mid-Layer handles device queue full */
1154
1155                 cp->result = DID_OK << 16 | lscsi_status;
1156
1157                 /* TODO: ??? */
1158                 /* Adjust queue depth */
1159                 ret = scsi_track_queue_full(cp->device,
1160                     sp->lun_queue->out_cnt - 1);
1161                 if (ret) {
1162                         qla_printk(KERN_INFO, ha,
1163                             "scsi(%ld:%d:%d:%d): Queue depth adjusted to %d.\n",
1164                             ha->host_no, cp->device->channel, cp->device->id,
1165                             cp->device->lun, ret);
1166                 }
1167                 break;
1168
1169         default:
1170                 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1171                     "0x%x-0x%x.\n",
1172                     ha->host_no, comp_status, scsi_status));
1173                 qla_printk(KERN_INFO, ha,
1174                     "Unknown status detected 0x%x-0x%x.\n",
1175                     comp_status, scsi_status);
1176
1177                 cp->result = DID_ERROR << 16;
1178                 break;
1179         }
1180
1181         /* Place command on done queue. */
1182         if (ha->status_srb == NULL)
1183                 qla2x00_sp_compl(ha, sp);
1184 }
1185
1186 /**
1187  * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1188  * @ha: SCSI driver HA context
1189  * @pkt: Entry pointer
1190  *
1191  * Extended sense data.
1192  */
1193 static void
1194 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1195 {
1196         uint8_t         sense_sz = 0;
1197         srb_t           *sp = ha->status_srb;
1198         struct scsi_cmnd *cp;
1199
1200         if (sp != NULL && sp->request_sense_length != 0) {
1201                 cp = sp->cmd;
1202                 if (cp == NULL) {
1203                         DEBUG2(printk("%s(): Cmd already returned back to OS "
1204                             "sp=%p sp->state:%d\n", __func__, sp, sp->state));
1205                         qla_printk(KERN_INFO, ha,
1206                             "cmd is NULL: already returned to OS (sp=%p)\n",
1207                             sp);
1208
1209                         ha->status_srb = NULL;
1210                         return;
1211                 }
1212
1213                 if (sp->request_sense_length > sizeof(pkt->data)) {
1214                         sense_sz = sizeof(pkt->data);
1215                 } else {
1216                         sense_sz = sp->request_sense_length;
1217                 }
1218
1219                 /* Move sense data. */
1220                 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1221                 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1222
1223                 sp->request_sense_ptr += sense_sz;
1224                 sp->request_sense_length -= sense_sz;
1225
1226                 /* Place command on done queue. */
1227                 if (sp->request_sense_length == 0) {
1228                         ha->status_srb = NULL;
1229                         qla2x00_sp_compl(ha, sp);
1230                 }
1231         }
1232 }
1233
1234 /**
1235  * qla2x00_error_entry() - Process an error entry.
1236  * @ha: SCSI driver HA context
1237  * @pkt: Entry pointer
1238  */
1239 static void
1240 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1241 {
1242         srb_t *sp;
1243
1244 #if defined(QL_DEBUG_LEVEL_2)
1245         if (pkt->entry_status & RF_INV_E_ORDER)
1246                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1247         else if (pkt->entry_status & RF_INV_E_COUNT)
1248                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1249         else if (pkt->entry_status & RF_INV_E_PARAM)
1250                 qla_printk(KERN_ERR, ha,
1251                     "%s: Invalid Entry Parameter\n", __func__);
1252         else if (pkt->entry_status & RF_INV_E_TYPE)
1253                 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1254         else if (pkt->entry_status & RF_BUSY)
1255                 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1256         else
1257                 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1258 #endif
1259
1260         /* Validate handle. */
1261         if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1262                 sp = ha->outstanding_cmds[pkt->handle];
1263         else
1264                 sp = NULL;
1265
1266         if (sp) {
1267                 /* Free outstanding command slot. */
1268                 ha->outstanding_cmds[pkt->handle] = NULL;
1269                 if (ha->actthreads)
1270                         ha->actthreads--;
1271                 sp->lun_queue->out_cnt--;
1272
1273                 /* Bad payload or header */
1274                 if (pkt->entry_status &
1275                     (RF_INV_E_ORDER | RF_INV_E_COUNT |
1276                      RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1277                         sp->cmd->result = DID_ERROR << 16;
1278                 } else if (pkt->entry_status & RF_BUSY) {
1279                         sp->cmd->result = DID_BUS_BUSY << 16;
1280                 } else {
1281                         sp->cmd->result = DID_ERROR << 16;
1282                 }
1283                 qla2x00_sp_compl(ha, sp);
1284
1285         } else if (pkt->entry_type == COMMAND_A64_TYPE ||
1286             pkt->entry_type == COMMAND_TYPE) {
1287                 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1288                     ha->host_no));
1289                 qla_printk(KERN_WARNING, ha,
1290                     "Error entry - invalid handle\n");
1291
1292                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1293                 if (ha->dpc_wait && !ha->dpc_active)
1294                         up(ha->dpc_wait);
1295         }
1296 }
1297
1298 /**
1299  * qla2x00_ms_entry() - Process a Management Server entry.
1300  * @ha: SCSI driver HA context
1301  * @index: Response queue out pointer
1302  */
1303 static void
1304 qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1305 {
1306         srb_t          *sp;
1307
1308         DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1309             __func__, ha->host_no, pkt, pkt->handle1));
1310
1311         /* Validate handle. */
1312         if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1313                 sp = ha->outstanding_cmds[pkt->handle1];
1314         else
1315                 sp = NULL;
1316
1317         if (sp == NULL) {
1318                 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1319                     ha->host_no));
1320                 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1321
1322                 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1323                 return;
1324         }
1325
1326         CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1327         CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1328
1329         /* Free outstanding command slot. */
1330         ha->outstanding_cmds[pkt->handle1] = NULL;
1331
1332         qla2x00_sp_compl(ha, sp);
1333 }