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