SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/scsi/lpfc/lpfc_sli.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Enterprise Fibre Channel Host Bus Adapters.                     *
   4  * Refer to the README file included with this package for         *
   5  * driver version and adapter support.                             *
   6  * Copyright (C) 2004 Emulex Corporation.                          *
   7  * www.emulex.com                                                  *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of the GNU General Public License     *
  11  * as published by the Free Software Foundation; either version 2  *
  12  * of the License, or (at your option) any later version.          *
  13  *                                                                 *
  14  * This program is distributed in the hope that it will be useful, *
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of  *
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   *
  17  * GNU General Public License for more details, a copy of which    *
  18  * can be found in the file COPYING included with this package.    *
  19  *******************************************************************/
  20
  21 /*
  22  * $Id: lpfc_sli.c 1.232 2005/04/13 11:59:16EDT sf_support Exp  $
  23  */
  24
  25 #include <linux/blkdev.h>
  26 #include <linux/pci.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/delay.h>
  29
  30 #include <scsi/scsi_cmnd.h>
  31 #include <scsi/scsi_device.h>
  32 #include <scsi/scsi_host.h>
  33
  34 #include "lpfc_hw.h"
  35 #include "lpfc_sli.h"
  36 #include "lpfc_disc.h"
  37 #include "lpfc_scsi.h"
  38 #include "lpfc.h"
  39 #include "lpfc_crtn.h"
  40 #include "lpfc_logmsg.h"
  41 #include "lpfc_compat.h"
  42
  43 /*
  44  * Define macro to log: Mailbox command x%x cannot issue Data
  45  * This allows multiple uses of lpfc_msgBlk0311
  46  * w/o perturbing log msg utility.
  47  */
  48 #define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \
  49                         lpfc_printf_log(phba, \
  50                                 KERN_INFO, \
  51                                 LOG_MBOX | LOG_SLI, \
  52                                 "%d:0311 Mailbox command x%x cannot issue " \
  53                                 "Data: x%x x%x x%x\n", \
  54                                 phba->brd_no, \
  55                                 mb->mbxCommand,         \
  56                                 phba->hba_state,        \
  57                                 psli->sli_flag, \
  58                                 flag);
  59
  60
  61 /* There are only four IOCB completion types. */
  62 typedef enum _lpfc_iocb_type {
  63         LPFC_UNKNOWN_IOCB,
  64         LPFC_UNSOL_IOCB,
  65         LPFC_SOL_IOCB,
  66         LPFC_ABORT_IOCB
  67 } lpfc_iocb_type;
  68
  69 /*
  70  * Translate the iocb command to an iocb command type used to decide the final
  71  * disposition of each completed IOCB.
  72  */
  73 static lpfc_iocb_type
  74 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
  75 {
  76         lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
  77
  78         if (iocb_cmnd > CMD_MAX_IOCB_CMD)
  79                 return 0;
  80
  81         switch (iocb_cmnd) {
  82         case CMD_XMIT_SEQUENCE_CR:
  83         case CMD_XMIT_SEQUENCE_CX:
  84         case CMD_XMIT_BCAST_CN:
  85         case CMD_XMIT_BCAST_CX:
  86         case CMD_ELS_REQUEST_CR:
  87         case CMD_ELS_REQUEST_CX:
  88         case CMD_CREATE_XRI_CR:
  89         case CMD_CREATE_XRI_CX:
  90         case CMD_GET_RPI_CN:
  91         case CMD_XMIT_ELS_RSP_CX:
  92         case CMD_GET_RPI_CR:
  93         case CMD_FCP_IWRITE_CR:
  94         case CMD_FCP_IWRITE_CX:
  95         case CMD_FCP_IREAD_CR:
  96         case CMD_FCP_IREAD_CX:
  97         case CMD_FCP_ICMND_CR:
  98         case CMD_FCP_ICMND_CX:
  99         case CMD_ADAPTER_MSG:
 100         case CMD_ADAPTER_DUMP:
 101         case CMD_XMIT_SEQUENCE64_CR:
 102         case CMD_XMIT_SEQUENCE64_CX:
 103         case CMD_XMIT_BCAST64_CN:
 104         case CMD_XMIT_BCAST64_CX:
 105         case CMD_ELS_REQUEST64_CR:
 106         case CMD_ELS_REQUEST64_CX:
 107         case CMD_FCP_IWRITE64_CR:
 108         case CMD_FCP_IWRITE64_CX:
 109         case CMD_FCP_IREAD64_CR:
 110         case CMD_FCP_IREAD64_CX:
 111         case CMD_FCP_ICMND64_CR:
 112         case CMD_FCP_ICMND64_CX:
 113         case CMD_GEN_REQUEST64_CR:
 114         case CMD_GEN_REQUEST64_CX:
 115         case CMD_XMIT_ELS_RSP64_CX:
 116                 type = LPFC_SOL_IOCB;
 117                 break;
 118         case CMD_ABORT_XRI_CN:
 119         case CMD_ABORT_XRI_CX:
 120         case CMD_CLOSE_XRI_CN:
 121         case CMD_CLOSE_XRI_CX:
 122         case CMD_XRI_ABORTED_CX:
 123         case CMD_ABORT_MXRI64_CN:
 124                 type = LPFC_ABORT_IOCB;
 125                 break;
 126         case CMD_RCV_SEQUENCE_CX:
 127         case CMD_RCV_ELS_REQ_CX:
 128         case CMD_RCV_SEQUENCE64_CX:
 129         case CMD_RCV_ELS_REQ64_CX:
 130                 type = LPFC_UNSOL_IOCB;
 131                 break;
 132         default:
 133                 type = LPFC_UNKNOWN_IOCB;
 134                 break;
 135         }
 136
 137         return type;
 138 }
 139
 140 static int
 141 lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb)
 142 {
 143         struct lpfc_sli *psli = &phba->sli;
 144         MAILBOX_t *pmbox = &pmb->mb;
 145         int i, rc;
 146
 147         for (i = 0; i < psli->num_rings; i++) {
 148                 phba->hba_state = LPFC_INIT_MBX_CMDS;
 149                 lpfc_config_ring(phba, i, pmb);
 150                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 151                 if (rc != MBX_SUCCESS) {
 152                         lpfc_printf_log(phba,
 153                                         KERN_ERR,
 154                                         LOG_INIT,
 155                                         "%d:0446 Adapter failed to init, "
 156                                         "mbxCmd x%x CFG_RING, mbxStatus x%x, "
 157                                         "ring %d\n",
 158                                         phba->brd_no,
 159                                         pmbox->mbxCommand,
 160                                         pmbox->mbxStatus,
 161                                         i);
 162                         phba->hba_state = LPFC_HBA_ERROR;
 163                         return -ENXIO;
 164                 }
 165         }
 166         return 0;
 167 }
 168
 169 static int
 170 lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba,
 171                         struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb)
 172 {
 173         uint16_t iotag;
 174
 175         list_add_tail(&piocb->list, &pring->txcmplq);
 176         pring->txcmplq_cnt++;
 177         if (unlikely(pring->ringno == LPFC_ELS_RING))
 178                 mod_timer(&phba->els_tmofunc,
 179                                         jiffies + HZ * (phba->fc_ratov << 1));
 180
 181         if (pring->fast_lookup) {
 182                 /* Setup fast lookup based on iotag for completion */
 183                 iotag = piocb->iocb.ulpIoTag;
 184                 if (iotag && (iotag < pring->fast_iotag))
 185                         *(pring->fast_lookup + iotag) = piocb;
 186                 else {
 187
 188                         /* Cmd ring <ringno> put: iotag <iotag> greater then
 189                            configured max <fast_iotag> wd0 <icmd> */
 190                         lpfc_printf_log(phba,
 191                                         KERN_ERR,
 192                                         LOG_SLI,
 193                                         "%d:0316 Cmd ring %d put: iotag x%x "
 194                                         "greater then configured max x%x "
 195                                         "wd0 x%x\n",
 196                                         phba->brd_no,
 197                                         pring->ringno, iotag,
 198                                         pring->fast_iotag,
 199                                         *(((uint32_t *)(&piocb->iocb)) + 7));
 200                 }
 201         }
 202         return (0);
 203 }
 204
 205 static struct lpfc_iocbq *
 206 lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
 207 {
 208         struct list_head *dlp;
 209         struct lpfc_iocbq *cmd_iocb;
 210
 211         dlp = &pring->txq;
 212         cmd_iocb = NULL;
 213         list_remove_head((&pring->txq), cmd_iocb,
 214                          struct lpfc_iocbq,
 215                          list);
 216         if (cmd_iocb) {
 217                 /* If the first ptr is not equal to the list header,
 218                  * deque the IOCBQ_t and return it.
 219                  */
 220                 pring->txq_cnt--;
 221         }
 222         return (cmd_iocb);
 223 }
 224
 225 static IOCB_t *
 226 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 227 {
 228         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
 229         uint32_t  max_cmd_idx = pring->numCiocb;
 230         IOCB_t *iocb = NULL;
 231
 232         if ((pring->next_cmdidx == pring->cmdidx) &&
 233            (++pring->next_cmdidx >= max_cmd_idx))
 234                 pring->next_cmdidx = 0;
 235
 236         if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
 237
 238                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
 239
 240                 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
 241                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 242                                         "%d:0315 Ring %d issue: portCmdGet %d "
 243                                         "is bigger then cmd ring %d\n",
 244                                         phba->brd_no, pring->ringno,
 245                                         pring->local_getidx, max_cmd_idx);
 246
 247                         phba->hba_state = LPFC_HBA_ERROR;
 248                         /*
 249                          * All error attention handlers are posted to
 250                          * worker thread
 251                          */
 252                         phba->work_ha |= HA_ERATT;
 253                         phba->work_hs = HS_FFER3;
 254                         if (phba->work_wait)
 255                                 wake_up(phba->work_wait);
 256
 257                         return NULL;
 258                 }
 259
 260                 if (pring->local_getidx == pring->next_cmdidx)
 261                         return NULL;
 262         }
 263
 264         iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx);
 265
 266         return iocb;
 267 }
 268
 269 static uint32_t
 270 lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
 271 {
 272         uint32_t search_start;
 273
 274         if (pring->fast_lookup == NULL) {
 275                 pring->iotag_ctr++;
 276                 if (pring->iotag_ctr >= pring->iotag_max)
 277                         pring->iotag_ctr = 1;
 278                 return pring->iotag_ctr;
 279         }
 280
 281         search_start = pring->iotag_ctr;
 282
 283         do {
 284                 pring->iotag_ctr++;
 285                 if (pring->iotag_ctr >= pring->fast_iotag)
 286                         pring->iotag_ctr = 1;
 287
 288                 if (*(pring->fast_lookup + pring->iotag_ctr) == NULL)
 289                         return pring->iotag_ctr;
 290
 291         } while (pring->iotag_ctr != search_start);
 292
 293         /*
 294          * Outstanding I/O count for ring <ringno> is at max <fast_iotag>
 295          */
 296         lpfc_printf_log(phba,
 297                 KERN_ERR,
 298                 LOG_SLI,
 299                 "%d:0318 Outstanding I/O count for ring %d is at max x%x\n",
 300                 phba->brd_no,
 301                 pring->ringno,
 302                 pring->fast_iotag);
 303         return (0);
 304 }
 305
 306 static void
 307 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 308                 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
 309 {
 310         /*
 311          * Allocate and set up an iotag
 312          */
 313         nextiocb->iocb.ulpIoTag =
 314                 lpfc_sli_next_iotag(phba, &phba->sli.ring[phba->sli.fcp_ring]);
 315
 316         /*
 317          * Issue iocb command to adapter
 318          */
 319         lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t));
 320         wmb();
 321         pring->stats.iocb_cmd++;
 322
 323         /*
 324          * If there is no completion routine to call, we can release the
 325          * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
 326          * that have no rsp ring completion, iocb_cmpl MUST be NULL.
 327          */
 328         if (nextiocb->iocb_cmpl)
 329                 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
 330         else {
 331                 list_add_tail(&nextiocb->list, &phba->lpfc_iocb_list);
 332         }
 333
 334         /*
 335          * Let the HBA know what IOCB slot will be the next one the
 336          * driver will put a command into.
 337          */
 338         pring->cmdidx = pring->next_cmdidx;
 339         writeb(pring->cmdidx, phba->MBslimaddr
 340                + (SLIMOFF + (pring->ringno * 2)) * 4);
 341 }
 342
 343 static void
 344 lpfc_sli_update_full_ring(struct lpfc_hba * phba,
 345                           struct lpfc_sli_ring *pring)
 346 {
 347         int ringno = pring->ringno;
 348
 349         pring->flag |= LPFC_CALL_RING_AVAILABLE;
 350
 351         wmb();
 352
 353         /*
 354          * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
 355          * The HBA will tell us when an IOCB entry is available.
 356          */
 357         writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
 358         readl(phba->CAregaddr); /* flush */
 359
 360         pring->stats.iocb_cmd_full++;
 361 }
 362
 363 static void
 364 lpfc_sli_update_ring(struct lpfc_hba * phba,
 365                      struct lpfc_sli_ring *pring)
 366 {
 367         int ringno = pring->ringno;
 368
 369         /*
 370          * Tell the HBA that there is work to do in this ring.
 371          */
 372         wmb();
 373         writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
 374         readl(phba->CAregaddr); /* flush */
 375 }
 376
 377 static void
 378 lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
 379 {
 380         IOCB_t *iocb;
 381         struct lpfc_iocbq *nextiocb;
 382
 383         /*
 384          * Check to see if:
 385          *  (a) there is anything on the txq to send
 386          *  (b) link is up
 387          *  (c) link attention events can be processed (fcp ring only)
 388          *  (d) IOCB processing is not blocked by the outstanding mbox command.
 389          */
 390         if (pring->txq_cnt &&
 391             (phba->hba_state > LPFC_LINK_DOWN) &&
 392             (pring->ringno != phba->sli.fcp_ring ||
 393              phba->sli.sli_flag & LPFC_PROCESS_LA) &&
 394             !(pring->flag & LPFC_STOP_IOCB_MBX)) {
 395
 396                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
 397                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
 398                         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
 399
 400                 if (iocb)
 401                         lpfc_sli_update_ring(phba, pring);
 402                 else
 403                         lpfc_sli_update_full_ring(phba, pring);
 404         }
 405
 406         return;
 407 }
 408
 409 /* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
 410 static void
 411 lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
 412 {
 413         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno];
 414
 415         /* If the ring is active, flag it */
 416         if (phba->sli.ring[ringno].cmdringaddr) {
 417                 if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
 418                         phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
 419                         /*
 420                          * Force update of the local copy of cmdGetInx
 421                          */
 422                         phba->sli.ring[ringno].local_getidx
 423                                 = le32_to_cpu(pgp->cmdGetInx);
 424                         spin_lock_irq(phba->host->host_lock);
 425                         lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
 426                         spin_unlock_irq(phba->host->host_lock);
 427                 }
 428         }
 429 }
 430
 431 static int
 432 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
 433 {
 434         uint8_t ret;
 435
 436         switch (mbxCommand) {
 437         case MBX_LOAD_SM:
 438         case MBX_READ_NV:
 439         case MBX_WRITE_NV:
 440         case MBX_RUN_BIU_DIAG:
 441         case MBX_INIT_LINK:
 442         case MBX_DOWN_LINK:
 443         case MBX_CONFIG_LINK:
 444         case MBX_CONFIG_RING:
 445         case MBX_RESET_RING:
 446         case MBX_READ_CONFIG:
 447         case MBX_READ_RCONFIG:
 448         case MBX_READ_SPARM:
 449         case MBX_READ_STATUS:
 450         case MBX_READ_RPI:
 451         case MBX_READ_XRI:
 452         case MBX_READ_REV:
 453         case MBX_READ_LNK_STAT:
 454         case MBX_REG_LOGIN:
 455         case MBX_UNREG_LOGIN:
 456         case MBX_READ_LA:
 457         case MBX_CLEAR_LA:
 458         case MBX_DUMP_MEMORY:
 459         case MBX_DUMP_CONTEXT:
 460         case MBX_RUN_DIAGS:
 461         case MBX_RESTART:
 462         case MBX_UPDATE_CFG:
 463         case MBX_DOWN_LOAD:
 464         case MBX_DEL_LD_ENTRY:
 465         case MBX_RUN_PROGRAM:
 466         case MBX_SET_MASK:
 467         case MBX_SET_SLIM:
 468         case MBX_UNREG_D_ID:
 469         case MBX_CONFIG_FARP:
 470         case MBX_LOAD_AREA:
 471         case MBX_RUN_BIU_DIAG64:
 472         case MBX_CONFIG_PORT:
 473         case MBX_READ_SPARM64:
 474         case MBX_READ_RPI64:
 475         case MBX_REG_LOGIN64:
 476         case MBX_READ_LA64:
 477         case MBX_FLASH_WR_ULA:
 478         case MBX_SET_DEBUG:
 479         case MBX_LOAD_EXP_ROM:
 480                 ret = mbxCommand;
 481                 break;
 482         default:
 483                 ret = MBX_SHUTDOWN;
 484                 break;
 485         }
 486         return (ret);
 487 }
 488 static void
 489 lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 490 {
 491         wait_queue_head_t *pdone_q;
 492
 493         /*
 494          * If pdone_q is empty, the driver thread gave up waiting and
 495          * continued running.
 496          */
 497         pdone_q = (wait_queue_head_t *) pmboxq->context1;
 498         if (pdone_q)
 499                 wake_up_interruptible(pdone_q);
 500         return;
 501 }
 502
 503 void
 504 lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 505 {
 506         struct lpfc_dmabuf *mp;
 507         mp = (struct lpfc_dmabuf *) (pmb->context1);
 508         if (mp) {
 509                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 510                 kfree(mp);
 511         }
 512         mempool_free( pmb, phba->mbox_mem_pool);
 513         return;
 514 }
 515
 516 int
 517 lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
 518 {
 519         MAILBOX_t *mbox;
 520         MAILBOX_t *pmbox;
 521         LPFC_MBOXQ_t *pmb;
 522         struct lpfc_sli *psli;
 523         int i, rc;
 524         uint32_t process_next;
 525
 526         psli = &phba->sli;
 527         /* We should only get here if we are in SLI2 mode */
 528         if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
 529                 return (1);
 530         }
 531
 532         phba->sli.slistat.mbox_event++;
 533
 534         /* Get a Mailbox buffer to setup mailbox commands for callback */
 535         if ((pmb = phba->sli.mbox_active)) {
 536                 pmbox = &pmb->mb;
 537                 mbox = &phba->slim2p->mbx;
 538
 539                 /* First check out the status word */
 540                 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
 541
 542                 /* Sanity check to ensure the host owns the mailbox */
 543                 if (pmbox->mbxOwner != OWN_HOST) {
 544                         /* Lets try for a while */
 545                         for (i = 0; i < 10240; i++) {
 546                                 /* First copy command data */
 547                                 lpfc_sli_pcimem_bcopy(mbox, pmbox,
 548                                                         sizeof (uint32_t));
 549                                 if (pmbox->mbxOwner == OWN_HOST)
 550                                         goto mbout;
 551                         }
 552                         /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
 553                            <status> */
 554                         lpfc_printf_log(phba,
 555                                         KERN_ERR,
 556                                         LOG_MBOX | LOG_SLI,
 557                                         "%d:0304 Stray Mailbox Interrupt "
 558                                         "mbxCommand x%x mbxStatus x%x\n",
 559                                         phba->brd_no,
 560                                         pmbox->mbxCommand,
 561                                         pmbox->mbxStatus);
 562
 563                         spin_lock_irq(phba->host->host_lock);
 564                         phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
 565                         spin_unlock_irq(phba->host->host_lock);
 566                         return (1);
 567                 }
 568
 569               mbout:
 570                 del_timer_sync(&phba->sli.mbox_tmo);
 571                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
 572
 573                 /*
 574                  * It is a fatal error if unknown mbox command completion.
 575                  */
 576                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
 577                     MBX_SHUTDOWN) {
 578
 579                         /* Unknow mailbox command compl */
 580                         lpfc_printf_log(phba,
 581                                 KERN_ERR,
 582                                 LOG_MBOX | LOG_SLI,
 583                                 "%d:0323 Unknown Mailbox command %x Cmpl\n",
 584                                 phba->brd_no,
 585                                 pmbox->mbxCommand);
 586                         phba->hba_state = LPFC_HBA_ERROR;
 587                         phba->work_hs = HS_FFER3;
 588                         lpfc_handle_eratt(phba);
 589                         return (0);
 590                 }
 591
 592                 phba->sli.mbox_active = NULL;
 593                 if (pmbox->mbxStatus) {
 594                         phba->sli.slistat.mbox_stat_err++;
 595                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
 596                                 /* Mbox cmd cmpl error - RETRYing */
 597                                 lpfc_printf_log(phba,
 598                                         KERN_INFO,
 599                                         LOG_MBOX | LOG_SLI,
 600                                         "%d:0305 Mbox cmd cmpl error - "
 601                                         "RETRYing Data: x%x x%x x%x x%x\n",
 602                                         phba->brd_no,
 603                                         pmbox->mbxCommand,
 604                                         pmbox->mbxStatus,
 605                                         pmbox->un.varWords[0],
 606                                         phba->hba_state);
 607                                 pmbox->mbxStatus = 0;
 608                                 pmbox->mbxOwner = OWN_HOST;
 609                                 spin_lock_irq(phba->host->host_lock);
 610                                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 611                                 spin_unlock_irq(phba->host->host_lock);
 612                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 613                                 if (rc == MBX_SUCCESS)
 614                                         return (0);
 615                         }
 616                 }
 617
 618                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
 619                 lpfc_printf_log(phba,
 620                                 KERN_INFO,
 621                                 LOG_MBOX | LOG_SLI,
 622                                 "%d:0307 Mailbox cmd x%x Cmpl x%p "
 623                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
 624                                 phba->brd_no,
 625                                 pmbox->mbxCommand,
 626                                 pmb->mbox_cmpl,
 627                                 *((uint32_t *) pmbox),
 628                                 pmbox->un.varWords[0],
 629                                 pmbox->un.varWords[1],
 630                                 pmbox->un.varWords[2],
 631                                 pmbox->un.varWords[3],
 632                                 pmbox->un.varWords[4],
 633                                 pmbox->un.varWords[5],
 634                                 pmbox->un.varWords[6],
 635                                 pmbox->un.varWords[7]);
 636
 637                 if (pmb->mbox_cmpl) {
 638                         lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
 639                         pmb->mbox_cmpl(phba,pmb);
 640                 }
 641         }
 642
 643
 644         do {
 645                 process_next = 0;       /* by default don't loop */
 646                 spin_lock_irq(phba->host->host_lock);
 647                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 648
 649                 /* Process next mailbox command if there is one */
 650                 if ((pmb = lpfc_mbox_get(phba))) {
 651                         spin_unlock_irq(phba->host->host_lock);
 652                         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 653                         if (rc == MBX_NOT_FINISHED) {
 654                                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
 655                                 pmb->mbox_cmpl(phba,pmb);
 656                                 process_next = 1;
 657                                 continue;       /* loop back */
 658                         }
 659                 } else {
 660                         spin_unlock_irq(phba->host->host_lock);
 661                         /* Turn on IOCB processing */
 662                         for (i = 0; i < phba->sli.num_rings; i++) {
 663                                 lpfc_sli_turn_on_ring(phba, i);
 664                         }
 665
 666                         /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
 667                         while (!list_empty(&phba->freebufList)) {
 668                                 struct lpfc_dmabuf *mp;
 669
 670                                 mp = NULL;
 671                                 list_remove_head((&phba->freebufList),
 672                                                  mp,
 673                                                  struct lpfc_dmabuf,
 674                                                  list);
 675                                 if (mp) {
 676                                         lpfc_mbuf_free(phba, mp->virt,
 677                                                        mp->phys);
 678                                         kfree(mp);
 679                                 }
 680                         }
 681                 }
 682
 683         } while (process_next);
 684
 685         return (0);
 686 }
 687 static int
 688 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 689                             struct lpfc_iocbq *saveq)
 690 {
 691         IOCB_t           * irsp;
 692         WORD5            * w5p;
 693         uint32_t           Rctl, Type;
 694         uint32_t           match, i;
 695
 696         match = 0;
 697         irsp = &(saveq->iocb);
 698         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
 699             || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
 700                 Rctl = FC_ELS_REQ;
 701                 Type = FC_ELS_DATA;
 702         } else {
 703                 w5p =
 704                     (WORD5 *) & (saveq->iocb.un.
 705                                  ulpWord[5]);
 706                 Rctl = w5p->hcsw.Rctl;
 707                 Type = w5p->hcsw.Type;
 708
 709                 /* Firmware Workaround */
 710                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
 711                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
 712                         Rctl = FC_ELS_REQ;
 713                         Type = FC_ELS_DATA;
 714                         w5p->hcsw.Rctl = Rctl;
 715                         w5p->hcsw.Type = Type;
 716                 }
 717         }
 718         /* unSolicited Responses */
 719         if (pring->prt[0].profile) {
 720                 (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq);
 721                 match = 1;
 722         } else {
 723                 /* We must search, based on rctl / type
 724                    for the right routine */
 725                 for (i = 0; i < pring->num_mask;
 726                      i++) {
 727                         if ((pring->prt[i].rctl ==
 728                              Rctl)
 729                             && (pring->prt[i].
 730                                 type == Type)) {
 731                                 (pring->prt[i].lpfc_sli_rcv_unsol_event)
 732                                         (phba, pring, saveq);
 733                                 match = 1;
 734                                 break;
 735                         }
 736                 }
 737         }
 738         if (match == 0) {
 739                 /* Unexpected Rctl / Type received */
 740                 /* Ring <ringno> handler: unexpected
 741                    Rctl <Rctl> Type <Type> received */
 742                 lpfc_printf_log(phba,
 743                                 KERN_WARNING,
 744                                 LOG_SLI,
 745                                 "%d:0313 Ring %d handler: unexpected Rctl x%x "
 746                                 "Type x%x received \n",
 747                                 phba->brd_no,
 748                                 pring->ringno,
 749                                 Rctl,
 750                                 Type);
 751         }
 752         return(1);
 753 }
 754
 755 static struct lpfc_iocbq *
 756 lpfc_sli_txcmpl_ring_search_slow(struct lpfc_sli_ring * pring,
 757                                  struct lpfc_iocbq * prspiocb)
 758 {
 759         IOCB_t *icmd = NULL;
 760         IOCB_t *irsp = NULL;
 761         struct lpfc_iocbq *cmd_iocb;
 762         struct lpfc_iocbq *iocb, *next_iocb;
 763         uint16_t iotag;
 764
 765         irsp = &prspiocb->iocb;
 766         iotag = irsp->ulpIoTag;
 767         cmd_iocb = NULL;
 768
 769         /* Search through txcmpl from the begining */
 770         list_for_each_entry_safe(iocb, next_iocb, &(pring->txcmplq), list) {
 771                 icmd = &iocb->iocb;
 772                 if (iotag == icmd->ulpIoTag) {
 773                         /* Found a match.  */
 774                         cmd_iocb = iocb;
 775                         list_del(&iocb->list);
 776                         pring->txcmplq_cnt--;
 777                         break;
 778                 }
 779         }
 780
 781         return (cmd_iocb);
 782 }
 783
 784 static struct lpfc_iocbq *
 785 lpfc_sli_txcmpl_ring_iotag_lookup(struct lpfc_hba * phba,
 786                         struct lpfc_sli_ring * pring,
 787                         struct lpfc_iocbq * prspiocb)
 788 {
 789         IOCB_t *irsp = NULL;
 790         struct lpfc_iocbq *cmd_iocb = NULL;
 791         uint16_t iotag;
 792
 793         if (unlikely(pring->fast_lookup == NULL))
 794                 return NULL;
 795
 796         /* Use fast lookup based on iotag for completion */
 797         irsp = &prspiocb->iocb;
 798         iotag = irsp->ulpIoTag;
 799         if (iotag < pring->fast_iotag) {
 800                 cmd_iocb = *(pring->fast_lookup + iotag);
 801                 *(pring->fast_lookup + iotag) = NULL;
 802                 if (cmd_iocb) {
 803                         list_del(&cmd_iocb->list);
 804                         pring->txcmplq_cnt--;
 805                         return cmd_iocb;
 806                 } else {
 807                         /*
 808                          * This is clearly an error.  A ring that uses iotags
 809                          * should never have a interrupt for a completion that
 810                          * is not on the ring.  Return NULL and log a error.
 811                          */
 812                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 813                                 "%d:0327 Rsp ring %d error -  command "
 814                                 "completion for iotag x%x not found\n",
 815                                 phba->brd_no, pring->ringno, iotag);
 816                         return NULL;
 817                 }
 818         }
 819
 820         /*
 821          * Rsp ring <ringno> get: iotag <iotag> greater then
 822          * configured max <fast_iotag> wd0 <irsp>.  This is an
 823          * error.  Just return NULL.
 824          */
 825         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 826                         "%d:0317 Rsp ring %d get: iotag x%x greater then "
 827                         "configured max x%x wd0 x%x\n",
 828                         phba->brd_no, pring->ringno, iotag, pring->fast_iotag,
 829                         *(((uint32_t *) irsp) + 7));
 830         return NULL;
 831 }
 832
 833 static int
 834 lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
 835                           struct lpfc_iocbq *saveq)
 836 {
 837         struct lpfc_iocbq * cmdiocbp;
 838         int rc = 1;
 839         unsigned long iflag;
 840
 841         /* Based on the iotag field, get the cmd IOCB from the txcmplq */
 842         spin_lock_irqsave(phba->host->host_lock, iflag);
 843         cmdiocbp = lpfc_sli_txcmpl_ring_search_slow(pring, saveq);
 844         if (cmdiocbp) {
 845                 if (cmdiocbp->iocb_cmpl) {
 846                         /*
 847                          * Post all ELS completions to the worker thread.
 848                          * All other are passed to the completion callback.
 849                          */
 850                         if (pring->ringno == LPFC_ELS_RING) {
 851                                 spin_unlock_irqrestore(phba->host->host_lock,
 852                                                        iflag);
 853                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
 854                                 spin_lock_irqsave(phba->host->host_lock, iflag);
 855                         }
 856                         else {
 857                                 if (cmdiocbp->iocb_flag & LPFC_IO_POLL)
 858                                         rc = 0;
 859
 860                                 spin_unlock_irqrestore(phba->host->host_lock,
 861                                                        iflag);
 862                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
 863                                 spin_lock_irqsave(phba->host->host_lock, iflag);
 864                         }
 865                 } else {
 866                         list_add_tail(&cmdiocbp->list, &phba->lpfc_iocb_list);
 867                 }
 868         } else {
 869                 /*
 870                  * Unknown initiating command based on the response iotag.
 871                  * This could be the case on the ELS ring because of
 872                  * lpfc_els_abort().
 873                  */
 874                 if (pring->ringno != LPFC_ELS_RING) {
 875                         /*
 876                          * Ring <ringno> handler: unexpected completion IoTag
 877                          * <IoTag>
 878                          */
 879                         lpfc_printf_log(phba,
 880                                 KERN_WARNING,
 881                                 LOG_SLI,
 882                                 "%d:0322 Ring %d handler: unexpected "
 883                                 "completion IoTag x%x Data: x%x x%x x%x x%x\n",
 884                                 phba->brd_no,
 885                                 pring->ringno,
 886                                 saveq->iocb.ulpIoTag,
 887                                 saveq->iocb.ulpStatus,
 888                                 saveq->iocb.un.ulpWord[4],
 889                                 saveq->iocb.ulpCommand,
 890                                 saveq->iocb.ulpContext);
 891                 }
 892         }
 893         spin_unlock_irqrestore(phba->host->host_lock, iflag);
 894         return rc;
 895 }
 896
 897 /*
 898  * This routine presumes LPFC_FCP_RING handling and doesn't bother
 899  * to check it explicitly.
 900  */
 901 static int
 902 lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
 903                                 struct lpfc_sli_ring * pring, uint32_t mask)
 904 {
 905         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
 906         IOCB_t *irsp = NULL;
 907         struct lpfc_iocbq *cmdiocbq = NULL;
 908         struct lpfc_iocbq rspiocbq;
 909         uint32_t status;
 910         uint32_t portRspPut, portRspMax;
 911         int rc = 1;
 912         lpfc_iocb_type type;
 913         unsigned long iflag;
 914         uint32_t rsp_cmpl = 0;
 915         void __iomem  *to_slim;
 916
 917         spin_lock_irqsave(phba->host->host_lock, iflag);
 918         pring->stats.iocb_event++;
 919
 920         /*
 921          * The next available response entry should never exceed the maximum
 922          * entries.  If it does, treat it as an adapter hardware error.
 923          */
 924         portRspMax = pring->numRiocb;
 925         portRspPut = le32_to_cpu(pgp->rspPutInx);
 926         if (unlikely(portRspPut >= portRspMax)) {
 927                 /*
 928                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
 929                  * rsp ring <portRspMax>
 930                  */
 931                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 932                                 "%d:0312 Ring %d handler: portRspPut %d "
 933                                 "is bigger then rsp ring %d\n",
 934                                 phba->brd_no, pring->ringno, portRspPut,
 935                                 portRspMax);
 936
 937                 phba->hba_state = LPFC_HBA_ERROR;
 938
 939                 /* All error attention handlers are posted to worker thread */
 940                 phba->work_ha |= HA_ERATT;
 941                 phba->work_hs = HS_FFER3;
 942                 if (phba->work_wait)
 943                         wake_up(phba->work_wait);
 944
 945                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
 946                 return 1;
 947         }
 948
 949         rmb();
 950         while (pring->rspidx != portRspPut) {
 951                 irsp = (IOCB_t *) IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
 952                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
 953                 pring->stats.iocb_rsp++;
 954                 rsp_cmpl++;
 955
 956                 if (unlikely(irsp->ulpStatus)) {
 957                         /* Rsp ring <ringno> error: IOCB */
 958                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
 959                                 "%d:0326 Rsp Ring %d error: IOCB Data: "
 960                                 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
 961                                 phba->brd_no, pring->ringno,
 962                                 irsp->un.ulpWord[0], irsp->un.ulpWord[1],
 963                                 irsp->un.ulpWord[2], irsp->un.ulpWord[3],
 964                                 irsp->un.ulpWord[4], irsp->un.ulpWord[5],
 965                                 *(((uint32_t *) irsp) + 6),
 966                                 *(((uint32_t *) irsp) + 7));
 967                 }
 968
 969                 switch (type) {
 970                 case LPFC_ABORT_IOCB:
 971                 case LPFC_SOL_IOCB:
 972                         /*
 973                          * Idle exchange closed via ABTS from port.  No iocb
 974                          * resources need to be recovered.
 975                          */
 976                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
 977                                 printk(KERN_INFO "%s: IOCB cmd 0x%x processed. "
 978                                        "Skipping completion\n", __FUNCTION__,
 979                                        irsp->ulpCommand);
 980                                 break;
 981                         }
 982
 983                         rspiocbq.iocb.un.ulpWord[4] = irsp->un.ulpWord[4];
 984                         rspiocbq.iocb.ulpStatus = irsp->ulpStatus;
 985                         rspiocbq.iocb.ulpContext = irsp->ulpContext;
 986                         rspiocbq.iocb.ulpIoTag = irsp->ulpIoTag;
 987                         cmdiocbq = lpfc_sli_txcmpl_ring_iotag_lookup(phba,
 988                                                                 pring,
 989                                                                 &rspiocbq);
 990                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
 991                                 spin_unlock_irqrestore(
 992                                        phba->host->host_lock, iflag);
 993                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
 994                                                       &rspiocbq);
 995                                 spin_lock_irqsave(phba->host->host_lock,
 996                                                   iflag);
 997                         }
 998                         break;
 999                 default:
1000                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1001                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1002                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1003                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1004                                        MAX_MSG_DATA);
1005                                 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1006                                          phba->brd_no, adaptermsg);
1007                         } else {
1008                                 /* Unknown IOCB command */
1009                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1010                                         "%d:0321 Unknown IOCB command "
1011                                         "Data: x%x, x%x x%x x%x x%x\n",
1012                                         phba->brd_no, type, irsp->ulpCommand,
1013                                         irsp->ulpStatus, irsp->ulpIoTag,
1014                                         irsp->ulpContext);
1015                         }
1016                         break;
1017                 }
1018
1019                 /*
1020                  * The response IOCB has been processed.  Update the ring
1021                  * pointer in SLIM.  If the port response put pointer has not
1022                  * been updated, sync the pgp->rspPutInx and fetch the new port
1023                  * response put pointer.
1024                  */
1025                 if (++pring->rspidx >= portRspMax)
1026                         pring->rspidx = 0;
1027
1028                 to_slim = phba->MBslimaddr +
1029                         (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1030                 writeb(pring->rspidx, to_slim);
1031
1032                 if (pring->rspidx == portRspPut)
1033                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1034         }
1035
1036         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1037                 pring->stats.iocb_rsp_full++;
1038                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1039                 writel(status, phba->CAregaddr);
1040                 readl(phba->CAregaddr);
1041         }
1042         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1043                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1044                 pring->stats.iocb_cmd_empty++;
1045
1046                 /* Force update of the local copy of cmdGetInx */
1047                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1048                 lpfc_sli_resume_iocb(phba, pring);
1049
1050                 if ((pring->lpfc_sli_cmd_available))
1051                         (pring->lpfc_sli_cmd_available) (phba, pring);
1052
1053         }
1054
1055         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1056         return rc;
1057 }
1058
1059
1060 int
1061 lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
1062                            struct lpfc_sli_ring * pring, uint32_t mask)
1063 {
1064         IOCB_t *entry;
1065         IOCB_t *irsp = NULL;
1066         struct lpfc_iocbq *rspiocbp = NULL;
1067         struct lpfc_iocbq *next_iocb;
1068         struct lpfc_iocbq *cmdiocbp;
1069         struct lpfc_iocbq *saveq;
1070         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
1071         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1072         uint8_t iocb_cmd_type;
1073         lpfc_iocb_type type;
1074         uint32_t status, free_saveq;
1075         uint32_t portRspPut, portRspMax;
1076         int rc = 1;
1077         unsigned long iflag;
1078         void __iomem  *to_slim;
1079
1080         spin_lock_irqsave(phba->host->host_lock, iflag);
1081         pring->stats.iocb_event++;
1082
1083         /*
1084          * The next available response entry should never exceed the maximum
1085          * entries.  If it does, treat it as an adapter hardware error.
1086          */
1087         portRspMax = pring->numRiocb;
1088         portRspPut = le32_to_cpu(pgp->rspPutInx);
1089         if (portRspPut >= portRspMax) {
1090                 /*
1091                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1092                  * rsp ring <portRspMax>
1093                  */
1094                 lpfc_printf_log(phba,
1095                                 KERN_ERR,
1096                                 LOG_SLI,
1097                                 "%d:0312 Ring %d handler: portRspPut %d "
1098                                 "is bigger then rsp ring %d\n",
1099                                 phba->brd_no,
1100                                 pring->ringno, portRspPut, portRspMax);
1101
1102                 phba->hba_state = LPFC_HBA_ERROR;
1103                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1104
1105                 phba->work_hs = HS_FFER3;
1106                 lpfc_handle_eratt(phba);
1107
1108                 return 1;
1109         }
1110
1111         rmb();
1112         lpfc_iocb_list = &phba->lpfc_iocb_list;
1113         while (pring->rspidx != portRspPut) {
1114                 /*
1115                  * Build a completion list and call the appropriate handler.
1116                  * The process is to get the next available response iocb, get
1117                  * a free iocb from the list, copy the response data into the
1118                  * free iocb, insert to the continuation list, and update the
1119                  * next response index to slim.  This process makes response
1120                  * iocb's in the ring available to DMA as fast as possible but
1121                  * pays a penalty for a copy operation.  Since the iocb is
1122                  * only 32 bytes, this penalty is considered small relative to
1123                  * the PCI reads for register values and a slim write.  When
1124                  * the ulpLe field is set, the entire Command has been
1125                  * received.
1126                  */
1127                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1128                 list_remove_head(lpfc_iocb_list, rspiocbp, struct lpfc_iocbq,
1129                                  list);
1130                 if (rspiocbp == NULL) {
1131                         printk(KERN_ERR "%s: out of buffers! Failing "
1132                                "completion.\n", __FUNCTION__);
1133                         break;
1134                 }
1135
1136                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
1137                 irsp = &rspiocbp->iocb;
1138
1139                 if (++pring->rspidx >= portRspMax)
1140                         pring->rspidx = 0;
1141
1142                 to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
1143                                               + 1) * 4;
1144                 writeb(pring->rspidx, to_slim);
1145
1146                 if (list_empty(&(pring->iocb_continueq))) {
1147                         list_add(&rspiocbp->list, &(pring->iocb_continueq));
1148                 } else {
1149                         list_add_tail(&rspiocbp->list,
1150                                       &(pring->iocb_continueq));
1151                 }
1152
1153                 pring->iocb_continueq_cnt++;
1154                 if (irsp->ulpLe) {
1155                         /*
1156                          * By default, the driver expects to free all resources
1157                          * associated with this iocb completion.
1158                          */
1159                         free_saveq = 1;
1160                         saveq = list_get_first(&pring->iocb_continueq,
1161                                                struct lpfc_iocbq, list);
1162                         irsp = &(saveq->iocb);
1163                         list_del_init(&pring->iocb_continueq);
1164                         pring->iocb_continueq_cnt = 0;
1165
1166                         pring->stats.iocb_rsp++;
1167
1168                         if (irsp->ulpStatus) {
1169                                 /* Rsp ring <ringno> error: IOCB */
1170                                 lpfc_printf_log(phba,
1171                                         KERN_WARNING,
1172                                         LOG_SLI,
1173                                         "%d:0328 Rsp Ring %d error: IOCB Data: "
1174                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1175                                         phba->brd_no,
1176                                         pring->ringno,
1177                                         irsp->un.ulpWord[0],
1178                                         irsp->un.ulpWord[1],
1179                                         irsp->un.ulpWord[2],
1180                                         irsp->un.ulpWord[3],
1181                                         irsp->un.ulpWord[4],
1182                                         irsp->un.ulpWord[5],
1183                                         *(((uint32_t *) irsp) + 6),
1184                                         *(((uint32_t *) irsp) + 7));
1185                         }
1186
1187                         /*
1188                          * Fetch the IOCB command type and call the correct
1189                          * completion routine.  Solicited and Unsolicited
1190                          * IOCBs on the ELS ring get freed back to the
1191                          * lpfc_iocb_list by the discovery kernel thread.
1192                          */
1193                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1194                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1195                         if (type == LPFC_SOL_IOCB) {
1196                                 spin_unlock_irqrestore(phba->host->host_lock,
1197                                                        iflag);
1198                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1199                                         saveq);
1200                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1201                         } else if (type == LPFC_UNSOL_IOCB) {
1202                                 spin_unlock_irqrestore(phba->host->host_lock,
1203                                                        iflag);
1204                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1205                                         saveq);
1206                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1207                         } else if (type == LPFC_ABORT_IOCB) {
1208                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1209                                     ((cmdiocbp =
1210                                       lpfc_sli_txcmpl_ring_search_slow(pring,
1211                                                 saveq)))) {
1212                                         /* Call the specified completion
1213                                            routine */
1214                                         if (cmdiocbp->iocb_cmpl) {
1215                                                 spin_unlock_irqrestore(
1216                                                        phba->host->host_lock,
1217                                                        iflag);
1218                                                 (cmdiocbp->iocb_cmpl) (phba,
1219                                                              cmdiocbp, saveq);
1220                                                 spin_lock_irqsave(
1221                                                           phba->host->host_lock,
1222                                                           iflag);
1223                                         } else {
1224                                                 list_add_tail(&cmdiocbp->list,
1225                                                                 lpfc_iocb_list);
1226                                         }
1227                                 }
1228                         } else if (type == LPFC_UNKNOWN_IOCB) {
1229                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1230
1231                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1232
1233                                         memset(adaptermsg, 0,
1234                                                LPFC_MAX_ADPTMSG);
1235                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1236                                                MAX_MSG_DATA);
1237                                         dev_warn(&((phba->pcidev)->dev),
1238                                                  "lpfc%d: %s",
1239                                                  phba->brd_no, adaptermsg);
1240                                 } else {
1241                                         /* Unknown IOCB command */
1242                                         lpfc_printf_log(phba,
1243                                                 KERN_ERR,
1244                                                 LOG_SLI,
1245                                                 "%d:0321 Unknown IOCB command "
1246                                                 "Data: x%x x%x x%x x%x\n",
1247                                                 phba->brd_no,
1248                                                 irsp->ulpCommand,
1249                                                 irsp->ulpStatus,
1250                                                 irsp->ulpIoTag,
1251                                                 irsp->ulpContext);
1252                                 }
1253                         }
1254
1255                         if (free_saveq) {
1256                                 if (!list_empty(&saveq->list)) {
1257                                         list_for_each_entry_safe(rspiocbp,
1258                                                                  next_iocb,
1259                                                                  &saveq->list,
1260                                                                  list) {
1261                                                 list_add_tail(&rspiocbp->list,
1262                                                               lpfc_iocb_list);
1263                                         }
1264                                 }
1265
1266                                 list_add_tail(&saveq->list, lpfc_iocb_list);
1267                         }
1268                 }
1269
1270                 /*
1271                  * If the port response put pointer has not been updated, sync
1272                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1273                  * response put pointer.
1274                  */
1275                 if (pring->rspidx == portRspPut) {
1276                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1277                 }
1278         } /* while (pring->rspidx != portRspPut) */
1279
1280         if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
1281                 /* At least one response entry has been freed */
1282                 pring->stats.iocb_rsp_full++;
1283                 /* SET RxRE_RSP in Chip Att register */
1284                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1285                 writel(status, phba->CAregaddr);
1286                 readl(phba->CAregaddr); /* flush */
1287         }
1288         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1289                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1290                 pring->stats.iocb_cmd_empty++;
1291
1292                 /* Force update of the local copy of cmdGetInx */
1293                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1294                 lpfc_sli_resume_iocb(phba, pring);
1295
1296                 if ((pring->lpfc_sli_cmd_available))
1297                         (pring->lpfc_sli_cmd_available) (phba, pring);
1298
1299         }
1300
1301         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1302         return rc;
1303 }
1304
1305 int
1306 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1307 {
1308         struct lpfc_iocbq *iocb, *next_iocb;
1309         IOCB_t *icmd = NULL, *cmd = NULL;
1310         int errcnt;
1311         uint16_t iotag;
1312
1313         errcnt = 0;
1314
1315         /* Error everything on txq and txcmplq
1316          * First do the txq.
1317          */
1318         spin_lock_irq(phba->host->host_lock);
1319         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
1320                 list_del_init(&iocb->list);
1321                 if (iocb->iocb_cmpl) {
1322                         icmd = &iocb->iocb;
1323                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1324                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1325                         spin_unlock_irq(phba->host->host_lock);
1326                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1327                         spin_lock_irq(phba->host->host_lock);
1328                 } else {
1329                         list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
1330                 }
1331         }
1332         pring->txq_cnt = 0;
1333         INIT_LIST_HEAD(&(pring->txq));
1334
1335         /* Next issue ABTS for everything on the txcmplq */
1336         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1337                 cmd = &iocb->iocb;
1338
1339                 /*
1340                  * Imediate abort of IOCB, clear fast_lookup entry,
1341                  * if any, deque and call compl
1342                  */
1343                 iotag = cmd->ulpIoTag;
1344                 if (iotag && pring->fast_lookup &&
1345                     (iotag < pring->fast_iotag))
1346                         pring->fast_lookup[iotag] = NULL;
1347
1348                 list_del_init(&iocb->list);
1349                 pring->txcmplq_cnt--;
1350
1351                 if (iocb->iocb_cmpl) {
1352                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1353                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1354                         spin_unlock_irq(phba->host->host_lock);
1355                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1356                         spin_lock_irq(phba->host->host_lock);
1357                 } else {
1358                         list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
1359                 }
1360         }
1361
1362         INIT_LIST_HEAD(&pring->txcmplq);
1363         pring->txcmplq_cnt = 0;
1364         spin_unlock_irq(phba->host->host_lock);
1365
1366         return errcnt;
1367 }
1368
1369 /******************************************************************************
1370 * lpfc_sli_send_reset
1371 *
1372 * Note: After returning from this function, the HBA cannot be accessed for
1373 * 1 ms. Since we do not wish to delay in interrupt context, it is the
1374 * responsibility of the caller to perform the mdelay(1) and flush via readl().
1375 ******************************************************************************/
1376 static int
1377 lpfc_sli_send_reset(struct lpfc_hba * phba, uint16_t skip_post)
1378 {
1379         MAILBOX_t *swpmb;
1380         volatile uint32_t word0;
1381         void __iomem *to_slim;
1382         unsigned long flags = 0;
1383
1384         spin_lock_irqsave(phba->host->host_lock, flags);
1385
1386         /* A board reset must use REAL SLIM. */
1387         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1388
1389         word0 = 0;
1390         swpmb = (MAILBOX_t *) & word0;
1391         swpmb->mbxCommand = MBX_RESTART;
1392         swpmb->mbxHc = 1;
1393
1394         to_slim = phba->MBslimaddr;
1395         writel(*(uint32_t *) swpmb, to_slim);
1396         readl(to_slim); /* flush */
1397
1398         /* Only skip post after fc_ffinit is completed */
1399         if (skip_post) {
1400                 word0 = 1;      /* This is really setting up word1 */
1401         } else {
1402                 word0 = 0;      /* This is really setting up word1 */
1403         }
1404         to_slim = phba->MBslimaddr + sizeof (uint32_t);
1405         writel(*(uint32_t *) swpmb, to_slim);
1406         readl(to_slim); /* flush */
1407
1408         /* Turn off parity checking and serr during the physical reset */
1409         pci_read_config_word(phba->pcidev, PCI_COMMAND, &phba->pci_cfg_value);
1410         pci_write_config_word(phba->pcidev, PCI_COMMAND,
1411                               (phba->pci_cfg_value &
1412                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
1413
1414         writel(HC_INITFF, phba->HCregaddr);
1415
1416         phba->hba_state = LPFC_INIT_START;
1417         spin_unlock_irqrestore(phba->host->host_lock, flags);
1418
1419         return 0;
1420 }
1421
1422 static int
1423 lpfc_sli_brdreset(struct lpfc_hba * phba, uint16_t skip_post)
1424 {
1425         struct lpfc_sli_ring *pring;
1426         int i;
1427         struct lpfc_dmabuf *mp, *next_mp;
1428         unsigned long flags = 0;
1429
1430         lpfc_sli_send_reset(phba, skip_post);
1431         mdelay(1);
1432
1433         spin_lock_irqsave(phba->host->host_lock, flags);
1434         /* Risk the write on flush case ie no delay after the readl */
1435         readl(phba->HCregaddr); /* flush */
1436         /* Now toggle INITFF bit set by lpfc_sli_send_reset */
1437         writel(0, phba->HCregaddr);
1438         readl(phba->HCregaddr); /* flush */
1439
1440         /* Restore PCI cmd register */
1441         pci_write_config_word(phba->pcidev, PCI_COMMAND, phba->pci_cfg_value);
1442
1443         /* perform board reset */
1444         phba->fc_eventTag = 0;
1445         phba->fc_myDID = 0;
1446         phba->fc_prevDID = Mask_DID;
1447
1448         /* Reset HBA */
1449         lpfc_printf_log(phba,
1450                 KERN_INFO,
1451                 LOG_SLI,
1452                 "%d:0325 Reset HBA Data: x%x x%x x%x\n",
1453                 phba->brd_no,
1454                 phba->hba_state,
1455                 phba->sli.sli_flag,
1456                 skip_post);
1457
1458         /* Initialize relevant SLI info */
1459         for (i = 0; i < phba->sli.num_rings; i++) {
1460                 pring = &phba->sli.ring[i];
1461                 pring->flag = 0;
1462                 pring->rspidx = 0;
1463                 pring->next_cmdidx  = 0;
1464                 pring->local_getidx = 0;
1465                 pring->cmdidx = 0;
1466                 pring->missbufcnt = 0;
1467         }
1468         spin_unlock_irqrestore(phba->host->host_lock, flags);
1469
1470         if (skip_post) {
1471                 mdelay(100);
1472         } else {
1473                 mdelay(2000);
1474         }
1475
1476         spin_lock_irqsave(phba->host->host_lock, flags);
1477         /* Cleanup preposted buffers on the ELS ring */
1478         pring = &phba->sli.ring[LPFC_ELS_RING];
1479         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
1480                 list_del(&mp->list);
1481                 pring->postbufq_cnt--;
1482                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1483                 kfree(mp);
1484         }
1485         spin_unlock_irqrestore(phba->host->host_lock, flags);
1486
1487         for (i = 0; i < phba->sli.num_rings; i++)
1488                 lpfc_sli_abort_iocb_ring(phba, &phba->sli.ring[i]);
1489
1490         return 0;
1491 }
1492
1493 static int
1494 lpfc_sli_chipset_init(struct lpfc_hba *phba)
1495 {
1496         uint32_t status, i = 0;
1497
1498         /* Read the HBA Host Status Register */
1499         status = readl(phba->HSregaddr);
1500
1501         /* Check status register to see what current state is */
1502         i = 0;
1503         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
1504
1505                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
1506                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
1507                  * 4.
1508                  */
1509                 if (i++ >= 20) {
1510                         /* Adapter failed to init, timeout, status reg
1511                            <status> */
1512                         lpfc_printf_log(phba,
1513                                         KERN_ERR,
1514                                         LOG_INIT,
1515                                         "%d:0436 Adapter failed to init, "
1516                                         "timeout, status reg x%x\n",
1517                                         phba->brd_no,
1518                                         status);
1519                         phba->hba_state = LPFC_HBA_ERROR;
1520                         return -ETIMEDOUT;
1521                 }
1522
1523                 /* Check to see if any errors occurred during init */
1524                 if (status & HS_FFERM) {
1525                         /* ERROR: During chipset initialization */
1526                         /* Adapter failed to init, chipset, status reg
1527                            <status> */
1528                         lpfc_printf_log(phba,
1529                                         KERN_ERR,
1530                                         LOG_INIT,
1531                                         "%d:0437 Adapter failed to init, "
1532                                         "chipset, status reg x%x\n",
1533                                         phba->brd_no,
1534                                         status);
1535                         phba->hba_state = LPFC_HBA_ERROR;
1536                         return -EIO;
1537                 }
1538
1539                 if (i <= 5) {
1540                         msleep(10);
1541                 } else if (i <= 10) {
1542                         msleep(500);
1543                 } else {
1544                         msleep(2500);
1545                 }
1546
1547                 if (i == 15) {
1548                         lpfc_sli_brdreset(phba, 0);
1549                 }
1550                 /* Read the HBA Host Status Register */
1551                 status = readl(phba->HSregaddr);
1552         }
1553
1554         /* Check to see if any errors occurred during init */
1555         if (status & HS_FFERM) {
1556                 /* ERROR: During chipset initialization */
1557                 /* Adapter failed to init, chipset, status reg <status> */
1558                 lpfc_printf_log(phba,
1559                                 KERN_ERR,
1560                                 LOG_INIT,
1561                                 "%d:0438 Adapter failed to init, chipset, "
1562                                 "status reg x%x\n",
1563                                 phba->brd_no,
1564                                 status);
1565                 phba->hba_state = LPFC_HBA_ERROR;
1566                 return -EIO;
1567         }
1568
1569         /* Clear all interrupt enable conditions */
1570         writel(0, phba->HCregaddr);
1571         readl(phba->HCregaddr); /* flush */
1572
1573         /* setup host attn register */
1574         writel(0xffffffff, phba->HAregaddr);
1575         readl(phba->HAregaddr); /* flush */
1576         return 0;
1577 }
1578
1579 int
1580 lpfc_sli_hba_setup(struct lpfc_hba * phba)
1581 {
1582         LPFC_MBOXQ_t *pmb;
1583         uint32_t resetcount = 0, rc = 0, done = 0;
1584
1585         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1586         if (!pmb) {
1587                 phba->hba_state = LPFC_HBA_ERROR;
1588                 return -ENOMEM;
1589         }
1590
1591         while (resetcount < 2 && !done) {
1592                 phba->hba_state = 0;
1593                 lpfc_sli_brdreset(phba, 0);
1594                 msleep(2500);
1595                 rc = lpfc_sli_chipset_init(phba);
1596                 if (rc)
1597                         break;
1598
1599                 resetcount++;
1600
1601         /* Call pre CONFIG_PORT mailbox command initialization.  A value of 0
1602          * means the call was successful.  Any other nonzero value is a failure,
1603          * but if ERESTART is returned, the driver may reset the HBA and try
1604          * again.
1605          */
1606                 rc = lpfc_config_port_prep(phba);
1607                 if (rc == -ERESTART) {
1608                         phba->hba_state = 0;
1609                         continue;
1610                 } else if (rc) {
1611                         break;
1612                 }
1613
1614                 phba->hba_state = LPFC_INIT_MBX_CMDS;
1615                 lpfc_config_port(phba, pmb);
1616                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
1617                 if (rc == MBX_SUCCESS)
1618                         done = 1;
1619                 else {
1620                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1621                                 "%d:0442 Adapter failed to init, mbxCmd x%x "
1622                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
1623                                 phba->brd_no, pmb->mb.mbxCommand,
1624                                 pmb->mb.mbxStatus, 0);
1625                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1626                 }
1627         }
1628         if (!done)
1629                 goto lpfc_sli_hba_setup_error;
1630
1631         rc = lpfc_sli_ring_map(phba, pmb);
1632
1633         if (rc)
1634                 goto lpfc_sli_hba_setup_error;
1635
1636         phba->sli.sli_flag |= LPFC_PROCESS_LA;
1637
1638         rc = lpfc_config_port_post(phba);
1639         if (rc)
1640                 goto lpfc_sli_hba_setup_error;
1641
1642         goto lpfc_sli_hba_setup_exit;
1643 lpfc_sli_hba_setup_error:
1644         phba->hba_state = LPFC_HBA_ERROR;
1645 lpfc_sli_hba_setup_exit:
1646         mempool_free(pmb, phba->mbox_mem_pool);
1647         return rc;
1648 }
1649
1650 static void
1651 lpfc_mbox_abort(struct lpfc_hba * phba)
1652 {
1653         LPFC_MBOXQ_t *pmbox;
1654         MAILBOX_t *mb;
1655
1656         if (phba->sli.mbox_active) {
1657                 del_timer_sync(&phba->sli.mbox_tmo);
1658                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1659                 pmbox = phba->sli.mbox_active;
1660                 mb = &pmbox->mb;
1661                 phba->sli.mbox_active = NULL;
1662                 if (pmbox->mbox_cmpl) {
1663                         mb->mbxStatus = MBX_NOT_FINISHED;
1664                         (pmbox->mbox_cmpl) (phba, pmbox);
1665                 }
1666                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1667         }
1668
1669         /* Abort all the non active mailbox commands. */
1670         spin_lock_irq(phba->host->host_lock);
1671         pmbox = lpfc_mbox_get(phba);
1672         while (pmbox) {
1673                 mb = &pmbox->mb;
1674                 if (pmbox->mbox_cmpl) {
1675                         mb->mbxStatus = MBX_NOT_FINISHED;
1676                         spin_unlock_irq(phba->host->host_lock);
1677                         (pmbox->mbox_cmpl) (phba, pmbox);
1678                         spin_lock_irq(phba->host->host_lock);
1679                 }
1680                 pmbox = lpfc_mbox_get(phba);
1681         }
1682         spin_unlock_irq(phba->host->host_lock);
1683         return;
1684 }
1685
1686 /*! lpfc_mbox_timeout
1687  *
1688  * \pre
1689  * \post
1690  * \param hba Pointer to per struct lpfc_hba structure
1691  * \param l1  Pointer to the driver's mailbox queue.
1692  * \return
1693  *   void
1694  *
1695  * \b Description:
1696  *
1697  * This routine handles mailbox timeout events at timer interrupt context.
1698  */
1699 void
1700 lpfc_mbox_timeout(unsigned long ptr)
1701 {
1702         struct lpfc_hba *phba;
1703         unsigned long iflag;
1704
1705         phba = (struct lpfc_hba *)ptr;
1706         spin_lock_irqsave(phba->host->host_lock, iflag);
1707         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1708                 phba->work_hba_events |= WORKER_MBOX_TMO;
1709                 if (phba->work_wait)
1710                         wake_up(phba->work_wait);
1711         }
1712         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1713 }
1714
1715 void
1716 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
1717 {
1718         LPFC_MBOXQ_t *pmbox;
1719         MAILBOX_t *mb;
1720
1721         spin_lock_irq(phba->host->host_lock);
1722         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1723                 spin_unlock_irq(phba->host->host_lock);
1724                 return;
1725         }
1726
1727         pmbox = phba->sli.mbox_active;
1728         mb = &pmbox->mb;
1729
1730         /* Mbox cmd <mbxCommand> timeout */
1731         lpfc_printf_log(phba,
1732                 KERN_ERR,
1733                 LOG_MBOX | LOG_SLI,
1734                 "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
1735                 phba->brd_no,
1736                 mb->mbxCommand,
1737                 phba->hba_state,
1738                 phba->sli.sli_flag,
1739                 phba->sli.mbox_active);
1740
1741         if (phba->sli.mbox_active == pmbox) {
1742                 phba->sli.mbox_active = NULL;
1743                 if (pmbox->mbox_cmpl) {
1744                         mb->mbxStatus = MBX_NOT_FINISHED;
1745                         spin_unlock_irq(phba->host->host_lock);
1746                         (pmbox->mbox_cmpl) (phba, pmbox);
1747                         spin_lock_irq(phba->host->host_lock);
1748                 }
1749                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1750         }
1751
1752         spin_unlock_irq(phba->host->host_lock);
1753         lpfc_mbox_abort(phba);
1754         return;
1755 }
1756
1757 int
1758 lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
1759 {
1760         MAILBOX_t *mb;
1761         struct lpfc_sli *psli;
1762         uint32_t status, evtctr;
1763         uint32_t ha_copy;
1764         int i;
1765         unsigned long drvr_flag = 0;
1766         volatile uint32_t word0, ldata;
1767         void __iomem *to_slim;
1768
1769         psli = &phba->sli;
1770
1771         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
1772
1773
1774         mb = &pmbox->mb;
1775         status = MBX_SUCCESS;
1776
1777         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
1778                 /* Polling for a mbox command when another one is already active
1779                  * is not allowed in SLI. Also, the driver must have established
1780                  * SLI2 mode to queue and process multiple mbox commands.
1781                  */
1782
1783                 if (flag & MBX_POLL) {
1784                         spin_unlock_irqrestore(phba->host->host_lock,
1785                                                drvr_flag);
1786
1787                         /* Mbox command <mbxCommand> cannot issue */
1788                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1789                         return (MBX_NOT_FINISHED);
1790                 }
1791
1792                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
1793                         spin_unlock_irqrestore(phba->host->host_lock,
1794                                                drvr_flag);
1795                         /* Mbox command <mbxCommand> cannot issue */
1796                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1797                         return (MBX_NOT_FINISHED);
1798                 }
1799
1800                 /* Handle STOP IOCB processing flag. This is only meaningful
1801                  * if we are not polling for mbox completion.
1802                  */
1803                 if (flag & MBX_STOP_IOCB) {
1804                         flag &= ~MBX_STOP_IOCB;
1805                         /* Now flag each ring */
1806                         for (i = 0; i < psli->num_rings; i++) {
1807                                 /* If the ring is active, flag it */
1808                                 if (psli->ring[i].cmdringaddr) {
1809                                         psli->ring[i].flag |=
1810                                             LPFC_STOP_IOCB_MBX;
1811                                 }
1812                         }
1813                 }
1814
1815                 /* Another mailbox command is still being processed, queue this
1816                  * command to be processed later.
1817                  */
1818                 lpfc_mbox_put(phba, pmbox);
1819
1820                 /* Mbox cmd issue - BUSY */
1821                 lpfc_printf_log(phba,
1822                         KERN_INFO,
1823                         LOG_MBOX | LOG_SLI,
1824                         "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
1825                         phba->brd_no,
1826                         mb->mbxCommand,
1827                         phba->hba_state,
1828                         psli->sli_flag,
1829                         flag);
1830
1831                 psli->slistat.mbox_busy++;
1832                 spin_unlock_irqrestore(phba->host->host_lock,
1833                                        drvr_flag);
1834
1835                 return (MBX_BUSY);
1836         }
1837
1838         /* Handle STOP IOCB processing flag. This is only meaningful
1839          * if we are not polling for mbox completion.
1840          */
1841         if (flag & MBX_STOP_IOCB) {
1842                 flag &= ~MBX_STOP_IOCB;
1843                 if (flag == MBX_NOWAIT) {
1844                         /* Now flag each ring */
1845                         for (i = 0; i < psli->num_rings; i++) {
1846                                 /* If the ring is active, flag it */
1847                                 if (psli->ring[i].cmdringaddr) {
1848                                         psli->ring[i].flag |=
1849                                             LPFC_STOP_IOCB_MBX;
1850                                 }
1851                         }
1852                 }
1853         }
1854
1855         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
1856
1857         /* If we are not polling, we MUST be in SLI2 mode */
1858         if (flag != MBX_POLL) {
1859                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
1860                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1861                         spin_unlock_irqrestore(phba->host->host_lock,
1862                                                drvr_flag);
1863                         /* Mbox command <mbxCommand> cannot issue */
1864                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
1865                         return (MBX_NOT_FINISHED);
1866                 }
1867                 /* timeout active mbox command */
1868                 mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO);
1869         }
1870
1871         /* Mailbox cmd <cmd> issue */
1872         lpfc_printf_log(phba,
1873                 KERN_INFO,
1874                 LOG_MBOX | LOG_SLI,
1875                 "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
1876                 phba->brd_no,
1877                 mb->mbxCommand,
1878                 phba->hba_state,
1879                 psli->sli_flag,
1880                 flag);
1881
1882         psli->slistat.mbox_cmd++;
1883         evtctr = psli->slistat.mbox_event;
1884
1885         /* next set own bit for the adapter and copy over command word */
1886         mb->mbxOwner = OWN_CHIP;
1887
1888         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1889                 /* First copy command data to host SLIM area */
1890                 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
1891         } else {
1892                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1893                         /* copy command data into host mbox for cmpl */
1894                         lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
1895                                         MAILBOX_CMD_SIZE);
1896                 }
1897
1898                 /* First copy mbox command data to HBA SLIM, skip past first
1899                    word */
1900                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
1901                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
1902                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
1903
1904                 /* Next copy over first word, with mbxOwner set */
1905                 ldata = *((volatile uint32_t *)mb);
1906                 to_slim = phba->MBslimaddr;
1907                 writel(ldata, to_slim);
1908                 readl(to_slim); /* flush */
1909
1910                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1911                         /* switch over to host mailbox */
1912                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
1913                 }
1914         }
1915
1916         wmb();
1917         /* interrupt board to doit right away */
1918         writel(CA_MBATT, phba->CAregaddr);
1919         readl(phba->CAregaddr); /* flush */
1920
1921         switch (flag) {
1922         case MBX_NOWAIT:
1923                 /* Don't wait for it to finish, just return */
1924                 psli->mbox_active = pmbox;
1925                 break;
1926
1927         case MBX_POLL:
1928                 i = 0;
1929                 psli->mbox_active = NULL;
1930                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1931                         /* First read mbox status word */
1932                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
1933                         word0 = le32_to_cpu(word0);
1934                 } else {
1935                         /* First read mbox status word */
1936                         word0 = readl(phba->MBslimaddr);
1937                 }
1938
1939                 /* Read the HBA Host Attention Register */
1940                 ha_copy = readl(phba->HAregaddr);
1941
1942                 /* Wait for command to complete */
1943                 while (((word0 & OWN_CHIP) == OWN_CHIP)
1944                        || !(ha_copy & HA_MBATT)) {
1945                         if (i++ >= 100) {
1946                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1947                                 spin_unlock_irqrestore(phba->host->host_lock,
1948                                                        drvr_flag);
1949                                 return (MBX_NOT_FINISHED);
1950                         }
1951
1952                         /* Check if we took a mbox interrupt while we were
1953                            polling */
1954                         if (((word0 & OWN_CHIP) != OWN_CHIP)
1955                             && (evtctr != psli->slistat.mbox_event))
1956                                 break;
1957
1958                         spin_unlock_irqrestore(phba->host->host_lock,
1959                                                drvr_flag);
1960
1961                         /* Can be in interrupt context, do not sleep */
1962                         /* (or might be called with interrupts disabled) */
1963                         mdelay(i);
1964
1965                         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
1966
1967                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1968                                 /* First copy command data */
1969                                 word0 = *((volatile uint32_t *)
1970                                                 &phba->slim2p->mbx);
1971                                 word0 = le32_to_cpu(word0);
1972                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1973                                         MAILBOX_t *slimmb;
1974                                         volatile uint32_t slimword0;
1975                                         /* Check real SLIM for any errors */
1976                                         slimword0 = readl(phba->MBslimaddr);
1977                                         slimmb = (MAILBOX_t *) & slimword0;
1978                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
1979                                             && slimmb->mbxStatus) {
1980                                                 psli->sli_flag &=
1981                                                     ~LPFC_SLI2_ACTIVE;
1982                                                 word0 = slimword0;
1983                                         }
1984                                 }
1985                         } else {
1986                                 /* First copy command data */
1987                                 word0 = readl(phba->MBslimaddr);
1988                         }
1989                         /* Read the HBA Host Attention Register */
1990                         ha_copy = readl(phba->HAregaddr);
1991                 }
1992
1993                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1994                         /* copy results back to user */
1995                         lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
1996                                         MAILBOX_CMD_SIZE);
1997                 } else {
1998                         /* First copy command data */
1999                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2000                                                         MAILBOX_CMD_SIZE);
2001                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2002                                 pmbox->context2) {
2003                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
2004                                       phba->MBslimaddr + DMP_RSP_OFFSET,
2005                                                       mb->un.varDmp.word_cnt);
2006                         }
2007                 }
2008
2009                 writel(HA_MBATT, phba->HAregaddr);
2010                 readl(phba->HAregaddr); /* flush */
2011
2012                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2013                 status = mb->mbxStatus;
2014         }
2015
2016         spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2017         return (status);
2018 }
2019
2020 static int
2021 lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2022                     struct lpfc_iocbq * piocb)
2023 {
2024         /* Insert the caller's iocb in the txq tail for later processing. */
2025         list_add_tail(&piocb->list, &pring->txq);
2026         pring->txq_cnt++;
2027         return (0);
2028 }
2029
2030 static struct lpfc_iocbq *
2031 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2032                    struct lpfc_iocbq ** piocb)
2033 {
2034         struct lpfc_iocbq * nextiocb;
2035
2036         nextiocb = lpfc_sli_ringtx_get(phba, pring);
2037         if (!nextiocb) {
2038                 nextiocb = *piocb;
2039                 *piocb = NULL;
2040         }
2041
2042         return nextiocb;
2043 }
2044
2045 int
2046 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2047                     struct lpfc_iocbq *piocb, uint32_t flag)
2048 {
2049         struct lpfc_iocbq *nextiocb;
2050         IOCB_t *iocb;
2051
2052         /*
2053          * We should never get an IOCB if we are in a < LINK_DOWN state
2054          */
2055         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2056                 return IOCB_ERROR;
2057
2058         /*
2059          * Check to see if we are blocking IOCB processing because of a
2060          * outstanding mbox command.
2061          */
2062         if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
2063                 goto iocb_busy;
2064
2065         if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
2066                 /*
2067                  * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
2068                  * can be issued if the link is not up.
2069                  */
2070                 switch (piocb->iocb.ulpCommand) {
2071                 case CMD_QUE_RING_BUF_CN:
2072                 case CMD_QUE_RING_BUF64_CN:
2073                 case CMD_CLOSE_XRI_CN:
2074                 case CMD_ABORT_XRI_CN:
2075                         /*
2076                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2077                          * completion, iocb_cmpl MUST be 0.
2078                          */
2079                         if (piocb->iocb_cmpl)
2080                                 piocb->iocb_cmpl = NULL;
2081                         /*FALLTHROUGH*/
2082                 case CMD_CREATE_XRI_CR:
2083                         break;
2084                 default:
2085                         goto iocb_busy;
2086                 }
2087
2088         /*
2089          * For FCP commands, we must be in a state where we can process link
2090          * attention events.
2091          */
2092         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2093                    !(phba->sli.sli_flag & LPFC_PROCESS_LA)))
2094                 goto iocb_busy;
2095
2096         /*
2097          * Check to see if this is a high priority command.
2098          * If so bypass tx queue processing.
2099          */
2100         if (unlikely((flag & SLI_IOCB_HIGH_PRIORITY) &&
2101                      (iocb = lpfc_sli_next_iocb_slot(phba, pring)))) {
2102                 lpfc_sli_submit_iocb(phba, pring, iocb, piocb);
2103                 piocb = NULL;
2104         }
2105
2106         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2107                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2108                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2109
2110         if (iocb)
2111                 lpfc_sli_update_ring(phba, pring);
2112         else
2113                 lpfc_sli_update_full_ring(phba, pring);
2114
2115         if (!piocb)
2116                 return IOCB_SUCCESS;
2117
2118         goto out_busy;
2119
2120  iocb_busy:
2121         pring->stats.iocb_cmd_delay++;
2122
2123  out_busy:
2124
2125         if (!(flag & SLI_IOCB_RET_IOCB)) {
2126                 lpfc_sli_ringtx_put(phba, pring, piocb);
2127                 return IOCB_SUCCESS;
2128         }
2129
2130         return IOCB_BUSY;
2131 }
2132
2133 int
2134 lpfc_sli_setup(struct lpfc_hba *phba)
2135 {
2136         int i, totiocb = 0;
2137         struct lpfc_sli *psli = &phba->sli;
2138         struct lpfc_sli_ring *pring;
2139
2140         psli->num_rings = MAX_CONFIGURED_RINGS;
2141         psli->sli_flag = 0;
2142         psli->fcp_ring = LPFC_FCP_RING;
2143         psli->next_ring = LPFC_FCP_NEXT_RING;
2144         psli->ip_ring = LPFC_IP_RING;
2145
2146         for (i = 0; i < psli->num_rings; i++) {
2147                 pring = &psli->ring[i];
2148                 switch (i) {
2149                 case LPFC_FCP_RING:     /* ring 0 - FCP */
2150                         /* numCiocb and numRiocb are used in config_port */
2151                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
2152                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
2153                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2154                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2155                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2156                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2157                         pring->iotag_ctr = 0;
2158                         pring->iotag_max =
2159                             (phba->cfg_hba_queue_depth * 2);
2160                         pring->fast_iotag = pring->iotag_max;
2161                         pring->num_mask = 0;
2162                         break;
2163                 case LPFC_IP_RING:      /* ring 1 - IP */
2164                         /* numCiocb and numRiocb are used in config_port */
2165                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
2166                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
2167                         pring->num_mask = 0;
2168                         break;
2169                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
2170                         /* numCiocb and numRiocb are used in config_port */
2171                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
2172                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
2173                         pring->fast_iotag = 0;
2174                         pring->iotag_ctr = 0;
2175                         pring->iotag_max = 4096;
2176                         pring->num_mask = 4;
2177                         pring->prt[0].profile = 0;      /* Mask 0 */
2178                         pring->prt[0].rctl = FC_ELS_REQ;
2179                         pring->prt[0].type = FC_ELS_DATA;
2180                         pring->prt[0].lpfc_sli_rcv_unsol_event =
2181                             lpfc_els_unsol_event;
2182                         pring->prt[1].profile = 0;      /* Mask 1 */
2183                         pring->prt[1].rctl = FC_ELS_RSP;
2184                         pring->prt[1].type = FC_ELS_DATA;
2185                         pring->prt[1].lpfc_sli_rcv_unsol_event =
2186                             lpfc_els_unsol_event;
2187                         pring->prt[2].profile = 0;      /* Mask 2 */
2188                         /* NameServer Inquiry */
2189                         pring->prt[2].rctl = FC_UNSOL_CTL;
2190                         /* NameServer */
2191                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
2192                         pring->prt[2].lpfc_sli_rcv_unsol_event =
2193                             lpfc_ct_unsol_event;
2194                         pring->prt[3].profile = 0;      /* Mask 3 */
2195                         /* NameServer response */
2196                         pring->prt[3].rctl = FC_SOL_CTL;
2197                         /* NameServer */
2198                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
2199                         pring->prt[3].lpfc_sli_rcv_unsol_event =
2200                             lpfc_ct_unsol_event;
2201                         break;
2202                 }
2203                 totiocb += (pring->numCiocb + pring->numRiocb);
2204         }
2205         if (totiocb > MAX_SLI2_IOCB) {
2206                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
2207                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2208                                 "%d:0462 Too many cmd / rsp ring entries in "
2209                                 "SLI2 SLIM Data: x%x x%x\n",
2210                                 phba->brd_no, totiocb, MAX_SLI2_IOCB);
2211         }
2212
2213         return 0;
2214 }
2215
2216 int
2217 lpfc_sli_queue_setup(struct lpfc_hba * phba)
2218 {
2219         struct lpfc_sli *psli;
2220         struct lpfc_sli_ring *pring;
2221         int i, cnt;
2222
2223         psli = &phba->sli;
2224         spin_lock_irq(phba->host->host_lock);
2225         INIT_LIST_HEAD(&psli->mboxq);
2226         /* Initialize list headers for txq and txcmplq as double linked lists */
2227         for (i = 0; i < psli->num_rings; i++) {
2228                 pring = &psli->ring[i];
2229                 pring->ringno = i;
2230                 pring->next_cmdidx  = 0;
2231                 pring->local_getidx = 0;
2232                 pring->cmdidx = 0;
2233                 INIT_LIST_HEAD(&pring->txq);
2234                 INIT_LIST_HEAD(&pring->txcmplq);
2235                 INIT_LIST_HEAD(&pring->iocb_continueq);
2236                 INIT_LIST_HEAD(&pring->postbufq);
2237                 cnt = pring->fast_iotag;
2238                 spin_unlock_irq(phba->host->host_lock);
2239                 if (cnt) {
2240                         pring->fast_lookup =
2241                                 kmalloc(cnt * sizeof (struct lpfc_iocbq *),
2242                                         GFP_KERNEL);
2243                         if (pring->fast_lookup == 0) {
2244                                 return (0);
2245                         }
2246                         memset((char *)pring->fast_lookup, 0,
2247                                cnt * sizeof (struct lpfc_iocbq *));
2248                 }
2249                 spin_lock_irq(phba->host->host_lock);
2250         }
2251         spin_unlock_irq(phba->host->host_lock);
2252         return (1);
2253 }
2254
2255 int
2256 lpfc_sli_hba_down(struct lpfc_hba * phba)
2257 {
2258         struct lpfc_sli *psli;
2259         struct lpfc_sli_ring *pring;
2260         LPFC_MBOXQ_t *pmb;
2261         struct lpfc_iocbq *iocb, *next_iocb;
2262         IOCB_t *icmd = NULL;
2263         int i;
2264         unsigned long flags = 0;
2265
2266         psli = &phba->sli;
2267         lpfc_hba_down_prep(phba);
2268
2269         spin_lock_irqsave(phba->host->host_lock, flags);
2270
2271         for (i = 0; i < psli->num_rings; i++) {
2272                 pring = &psli->ring[i];
2273                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
2274
2275                 /*
2276                  * Error everything on the txq since these iocbs have not been
2277                  * given to the FW yet.
2278                  */
2279                 pring->txq_cnt = 0;
2280
2281                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2282                         list_del_init(&iocb->list);
2283                         if (iocb->iocb_cmpl) {
2284                                 icmd = &iocb->iocb;
2285                                 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2286                                 icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
2287                                 spin_unlock_irqrestore(phba->host->host_lock,
2288                                                        flags);
2289                                 (iocb->iocb_cmpl) (phba, iocb, iocb);
2290                                 spin_lock_irqsave(phba->host->host_lock, flags);
2291                         } else {
2292                                 list_add_tail(&iocb->list,
2293                                               &phba->lpfc_iocb_list);
2294                         }
2295                 }
2296
2297                 INIT_LIST_HEAD(&(pring->txq));
2298
2299                 if (pring->fast_lookup) {
2300                         kfree(pring->fast_lookup);
2301                         pring->fast_lookup = NULL;
2302                 }
2303
2304         }
2305
2306         spin_unlock_irqrestore(phba->host->host_lock, flags);
2307
2308         /* Return any active mbox cmds */
2309         del_timer_sync(&psli->mbox_tmo);
2310         spin_lock_irqsave(phba->host->host_lock, flags);
2311         phba->work_hba_events &= ~WORKER_MBOX_TMO;
2312         if (psli->mbox_active) {
2313                 pmb = psli->mbox_active;
2314                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2315                 if (pmb->mbox_cmpl) {
2316                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2317                         pmb->mbox_cmpl(phba,pmb);
2318                         spin_lock_irqsave(phba->host->host_lock, flags);
2319                 }
2320         }
2321         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2322         psli->mbox_active = NULL;
2323
2324         /* Return any pending mbox cmds */
2325         while ((pmb = lpfc_mbox_get(phba)) != NULL) {
2326                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2327                 if (pmb->mbox_cmpl) {
2328                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2329                         pmb->mbox_cmpl(phba,pmb);
2330                         spin_lock_irqsave(phba->host->host_lock, flags);
2331                 }
2332         }
2333
2334         INIT_LIST_HEAD(&psli->mboxq);
2335
2336         spin_unlock_irqrestore(phba->host->host_lock, flags);
2337
2338         /*
2339          * Provided the hba is not in an error state, reset it.  It is not
2340          * capable of IO anymore.
2341          */
2342         if (phba->hba_state != LPFC_HBA_ERROR) {
2343                 phba->hba_state = LPFC_INIT_START;
2344                 lpfc_sli_brdreset(phba, 1);
2345         }
2346
2347         return 1;
2348 }
2349
2350 void
2351 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
2352 {
2353         uint32_t *src = srcp;
2354         uint32_t *dest = destp;
2355         uint32_t ldata;
2356         int i;
2357
2358         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
2359                 ldata = *src;
2360                 ldata = le32_to_cpu(ldata);
2361                 *dest = ldata;
2362                 src++;
2363                 dest++;
2364         }
2365 }
2366
2367 int
2368 lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2369                          struct lpfc_dmabuf * mp)
2370 {
2371         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
2372            later */
2373         list_add_tail(&mp->list, &pring->postbufq);
2374
2375         pring->postbufq_cnt++;
2376         return 0;
2377 }
2378
2379
2380 struct lpfc_dmabuf *
2381 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2382                          dma_addr_t phys)
2383 {
2384         struct lpfc_dmabuf *mp, *next_mp;
2385         struct list_head *slp = &pring->postbufq;
2386
2387         /* Search postbufq, from the begining, looking for a match on phys */
2388         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
2389                 if (mp->phys == phys) {
2390                         list_del_init(&mp->list);
2391                         pring->postbufq_cnt--;
2392                         return mp;
2393                 }
2394         }
2395
2396         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2397                         "%d:0410 Cannot find virtual addr for mapped buf on "
2398                         "ring %d Data x%llx x%p x%p x%x\n",
2399                         phba->brd_no, pring->ringno, (unsigned long long)phys,
2400                         slp->next, slp->prev, pring->postbufq_cnt);
2401         return NULL;
2402 }
2403
2404 static void
2405 lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2406                            struct lpfc_iocbq * rspiocb)
2407 {
2408         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2409         /* Free the resources associated with the ELS_REQUEST64 IOCB the driver
2410          * just aborted.
2411          * In this case, context2  = cmd,  context2->next = rsp, context3 = bpl
2412          */
2413         if (cmdiocb->context2) {
2414                 buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;
2415
2416                 /* Free the response IOCB before completing the abort
2417                    command.  */
2418                 buf_ptr = NULL;
2419                 list_remove_head((&buf_ptr1->list), buf_ptr,
2420                                  struct lpfc_dmabuf, list);
2421                 if (buf_ptr) {
2422                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2423                         kfree(buf_ptr);
2424                 }
2425                 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2426                 kfree(buf_ptr1);
2427         }
2428
2429         if (cmdiocb->context3) {
2430                 buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
2431                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2432                 kfree(buf_ptr);
2433         }
2434
2435         list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
2436         return;
2437 }
2438
2439 int
2440 lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
2441                              struct lpfc_sli_ring * pring,
2442                              struct lpfc_iocbq * cmdiocb)
2443 {
2444         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
2445         struct lpfc_iocbq *abtsiocbp = NULL;
2446         IOCB_t *icmd = NULL;
2447         IOCB_t *iabt = NULL;
2448
2449         /* issue ABTS for this IOCB based on iotag */
2450         list_remove_head(lpfc_iocb_list, abtsiocbp, struct lpfc_iocbq, list);
2451         if (abtsiocbp == NULL)
2452                 return 0;
2453         memset(abtsiocbp, 0, sizeof (struct lpfc_iocbq));
2454
2455         iabt = &abtsiocbp->iocb;
2456         icmd = &cmdiocb->iocb;
2457         switch (icmd->ulpCommand) {
2458         case CMD_ELS_REQUEST64_CR:
2459                 /* Even though we abort the ELS command, the firmware may access
2460                  * the BPL or other resources before it processes our
2461                  * ABORT_MXRI64. Thus we must delay reusing the cmdiocb
2462                  * resources till the actual abort request completes.
2463                  */
2464                 abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
2465                 abtsiocbp->context2 = cmdiocb->context2;
2466                 abtsiocbp->context3 = cmdiocb->context3;
2467                 cmdiocb->context2 = NULL;
2468                 cmdiocb->context3 = NULL;
2469                 abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
2470                 break;
2471         default:
2472                 list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
2473                 return 0;
2474         }
2475
2476         iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
2477         iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;
2478
2479         iabt->ulpLe = 1;
2480         iabt->ulpClass = CLASS3;
2481         iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
2482
2483         if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
2484                 list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
2485                 return 0;
2486         }
2487
2488         return 1;
2489 }
2490
2491 static int
2492 lpfc_sli_validate_iocb_cmd(struct lpfc_scsi_buf *lpfc_cmd, uint16_t tgt_id,
2493                              uint64_t lun_id, struct lpfc_iocbq *iocb,
2494                              uint32_t ctx, lpfc_ctx_cmd ctx_cmd)
2495 {
2496         int rc = 1;
2497
2498         if (lpfc_cmd == NULL)
2499                 return rc;
2500
2501         switch (ctx_cmd) {
2502         case LPFC_CTX_LUN:
2503                 if ((lpfc_cmd->pCmd->device->id == tgt_id) &&
2504                     (lpfc_cmd->pCmd->device->lun == lun_id))
2505                         rc = 0;
2506                 break;
2507         case LPFC_CTX_TGT:
2508                 if (lpfc_cmd->pCmd->device->id == tgt_id)
2509                         rc = 0;
2510                 break;
2511         case LPFC_CTX_CTX:
2512                 if (iocb->iocb.ulpContext == ctx)
2513                         rc = 0;
2514         case LPFC_CTX_HOST:
2515                 rc = 0;
2516                 break;
2517         default:
2518                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
2519                         __FUNCTION__, ctx_cmd);
2520                 break;
2521         }
2522
2523         return rc;
2524 }
2525
2526 int
2527 lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2528                 uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
2529 {
2530         struct lpfc_iocbq *iocb, *next_iocb;
2531         IOCB_t *cmd = NULL;
2532         struct lpfc_scsi_buf *lpfc_cmd;
2533         int sum = 0, ret_val = 0;
2534
2535         /* Next check the txcmplq */
2536         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2537                 cmd = &iocb->iocb;
2538
2539                 /* Must be a FCP command */
2540                 if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) &&
2541                     (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) &&
2542                     (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) {
2543                         continue;
2544                 }
2545
2546                 /* context1 MUST be a struct lpfc_scsi_buf */
2547                 lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1);
2548                 ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id,
2549                                                      NULL, 0, ctx_cmd);
2550                 if (ret_val != 0)
2551                         continue;
2552                 sum++;
2553         }
2554         return sum;
2555 }
2556
2557 int
2558 lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2559                     uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
2560                     lpfc_ctx_cmd abort_cmd)
2561 {
2562         struct lpfc_iocbq *iocb, *next_iocb;
2563         struct lpfc_iocbq *abtsiocb = NULL;
2564         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
2565         IOCB_t *cmd = NULL;
2566         struct lpfc_scsi_buf *lpfc_cmd;
2567         int errcnt = 0, ret_val = 0;
2568
2569         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2570                 cmd = &iocb->iocb;
2571
2572                 /* Must be a FCP command */
2573                 if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) &&
2574                     (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) &&
2575                     (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) {
2576                         continue;
2577                 }
2578
2579                 /* context1 MUST be a struct lpfc_scsi_buf */
2580                 lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1);
2581                 ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id,
2582                                                      iocb, ctx, abort_cmd);
2583                 if (ret_val != 0)
2584                         continue;
2585
2586                 /* issue ABTS for this IOCB based on iotag */
2587                 list_remove_head(lpfc_iocb_list, abtsiocb, struct lpfc_iocbq,
2588                                  list);
2589                 if (abtsiocb == NULL) {
2590                         errcnt++;
2591                         continue;
2592                 }
2593                 memset(abtsiocb, 0, sizeof (struct lpfc_iocbq));
2594
2595                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
2596                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
2597                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
2598                 abtsiocb->iocb.ulpLe = 1;
2599                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
2600
2601                 if (phba->hba_state >= LPFC_LINK_UP)
2602                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
2603                 else
2604                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
2605
2606                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
2607                 if (ret_val == IOCB_ERROR) {
2608                         list_add_tail(&abtsiocb->list, lpfc_iocb_list);
2609                         errcnt++;
2610                         continue;
2611                 }
2612         }
2613
2614         return errcnt;
2615 }
2616
2617 void
2618 lpfc_sli_wake_iocb_high_priority(struct lpfc_hba * phba,
2619                                  struct lpfc_iocbq * queue1,
2620                                  struct lpfc_iocbq * queue2)
2621 {
2622         if (queue1->context2 && queue2)
2623                 memcpy(queue1->context2, queue2, sizeof (struct lpfc_iocbq));
2624
2625         /* The waiter is looking for LPFC_IO_HIPRI bit to be set
2626            as a signal to wake up */
2627         queue1->iocb_flag |= LPFC_IO_HIPRI;
2628         return;
2629 }
2630
2631 int
2632 lpfc_sli_issue_iocb_wait_high_priority(struct lpfc_hba * phba,
2633                                        struct lpfc_sli_ring * pring,
2634                                        struct lpfc_iocbq * piocb,
2635                                        uint32_t flag,
2636                                        struct lpfc_iocbq * prspiocbq,
2637                                        uint32_t timeout)
2638 {
2639         int j, delay_time,  retval = IOCB_ERROR;
2640
2641         /* The caller must left context1 empty.  */
2642         if (piocb->context_un.hipri_wait_queue != 0) {
2643                 return IOCB_ERROR;
2644         }
2645
2646         /*
2647          * If the caller has provided a response iocbq buffer, context2 must
2648          * be NULL or its an error.
2649          */
2650         if (prspiocbq && piocb->context2) {
2651                 return IOCB_ERROR;
2652         }
2653
2654         piocb->context2 = prspiocbq;
2655
2656         /* Setup callback routine and issue the command. */
2657         piocb->iocb_cmpl = lpfc_sli_wake_iocb_high_priority;
2658         retval = lpfc_sli_issue_iocb(phba, pring, piocb,
2659                                         flag | SLI_IOCB_HIGH_PRIORITY);
2660         if (retval != IOCB_SUCCESS) {
2661                 piocb->context2 = NULL;
2662                 return IOCB_ERROR;
2663         }
2664
2665         /*
2666          * This high-priority iocb was sent out-of-band.  Poll for its
2667          * completion rather than wait for a signal.  Note that the host_lock
2668          * is held by the midlayer and must be released here to allow the
2669          * interrupt handlers to complete the IO and signal this routine via
2670          * the iocb_flag.
2671          * Also, the delay_time is computed to be one second longer than
2672          * the scsi command timeout to give the FW time to abort on
2673          * timeout rather than the driver just giving up.  Typically,
2674          * the midlayer does not specify a time for this command so the
2675          * driver is free to enforce its own timeout.
2676          */
2677
2678         delay_time = ((timeout + 1) * 1000) >> 6;
2679         retval = IOCB_ERROR;
2680         spin_unlock_irq(phba->host->host_lock);
2681         for (j = 0; j < 64; j++) {
2682                 msleep(delay_time);
2683                 if (piocb->iocb_flag & LPFC_IO_HIPRI) {
2684                         piocb->iocb_flag &= ~LPFC_IO_HIPRI;
2685                         retval = IOCB_SUCCESS;
2686                         break;
2687                 }
2688         }
2689
2690         spin_lock_irq(phba->host->host_lock);
2691         piocb->context2 = NULL;
2692         return retval;
2693 }
2694 int
2695 lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
2696                          uint32_t timeout)
2697 {
2698         DECLARE_WAIT_QUEUE_HEAD(done_q);
2699         DECLARE_WAITQUEUE(wq_entry, current);
2700         uint32_t timeleft = 0;
2701         int retval;
2702
2703         /* The caller must leave context1 empty. */
2704         if (pmboxq->context1 != 0) {
2705                 return (MBX_NOT_FINISHED);
2706         }
2707
2708         /* setup wake call as IOCB callback */
2709         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
2710         /* setup context field to pass wait_queue pointer to wake function  */
2711         pmboxq->context1 = &done_q;
2712
2713         /* start to sleep before we wait, to avoid races */
2714         set_current_state(TASK_INTERRUPTIBLE);
2715         add_wait_queue(&done_q, &wq_entry);
2716
2717         /* now issue the command */
2718         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
2719
2720         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
2721                 timeleft = schedule_timeout(timeout * HZ);
2722                 pmboxq->context1 = NULL;
2723                 /* if schedule_timeout returns 0, we timed out and were not
2724                    woken up */
2725                 if (timeleft == 0) {
2726                         retval = MBX_TIMEOUT;
2727                 } else {
2728                         retval = MBX_SUCCESS;
2729                 }
2730         }
2731
2732
2733         set_current_state(TASK_RUNNING);
2734         remove_wait_queue(&done_q, &wq_entry);
2735         return retval;
2736 }
2737
2738 irqreturn_t
2739 lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
2740 {
2741         struct lpfc_hba *phba;
2742         uint32_t ha_copy;
2743         uint32_t work_ha_copy;
2744         unsigned long status;
2745         int i;
2746         uint32_t control;
2747
2748         /*
2749          * Get the driver's phba structure from the dev_id and
2750          * assume the HBA is not interrupting.
2751          */
2752         phba = (struct lpfc_hba *) dev_id;
2753
2754         if (unlikely(!phba))
2755                 return IRQ_NONE;
2756
2757         phba->sli.slistat.sli_intr++;
2758
2759         /*
2760          * Call the HBA to see if it is interrupting.  If not, don't claim
2761          * the interrupt
2762          */
2763
2764         /* Ignore all interrupts during initialization. */
2765         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2766                 return IRQ_NONE;
2767
2768         /*
2769          * Read host attention register to determine interrupt source
2770          * Clear Attention Sources, except Error Attention (to
2771          * preserve status) and Link Attention
2772          */
2773         spin_lock(phba->host->host_lock);
2774         ha_copy = readl(phba->HAregaddr);
2775         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
2776         readl(phba->HAregaddr); /* flush */
2777         spin_unlock(phba->host->host_lock);
2778
2779         if (unlikely(!ha_copy))
2780                 return IRQ_NONE;
2781
2782         work_ha_copy = ha_copy & phba->work_ha_mask;
2783
2784         if (unlikely(work_ha_copy)) {
2785                 if (work_ha_copy & HA_LATT) {
2786                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
2787                                 /*
2788                                  * Turn off Link Attention interrupts
2789                                  * until CLEAR_LA done
2790                                  */
2791                                 spin_lock(phba->host->host_lock);
2792                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
2793                                 control = readl(phba->HCregaddr);
2794                                 control &= ~HC_LAINT_ENA;
2795                                 writel(control, phba->HCregaddr);
2796                                 readl(phba->HCregaddr); /* flush */
2797                                 spin_unlock(phba->host->host_lock);
2798                         }
2799                         else
2800                                 work_ha_copy &= ~HA_LATT;
2801                 }
2802
2803                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
2804                         for (i = 0; i < phba->sli.num_rings; i++) {
2805                                 if (work_ha_copy & (HA_RXATT << (4*i))) {
2806                                         /*
2807                                          * Turn off Slow Rings interrupts
2808                                          */
2809                                         spin_lock(phba->host->host_lock);
2810                                         control = readl(phba->HCregaddr);
2811                                         control &= ~(HC_R0INT_ENA << i);
2812                                         writel(control, phba->HCregaddr);
2813                                         readl(phba->HCregaddr); /* flush */
2814                                         spin_unlock(phba->host->host_lock);
2815                                 }
2816                         }
2817                 }
2818
2819                 if (work_ha_copy & HA_ERATT) {
2820                         phba->hba_state = LPFC_HBA_ERROR;
2821                         /*
2822                          * There was a link/board error.  Read the
2823                          * status register to retrieve the error event
2824                          * and process it.
2825                          */
2826                         phba->sli.slistat.err_attn_event++;
2827                         /* Save status info */
2828                         phba->work_hs = readl(phba->HSregaddr);
2829                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
2830                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
2831
2832                         /* Clear Chip error bit */
2833                         writel(HA_ERATT, phba->HAregaddr);
2834                         readl(phba->HAregaddr); /* flush */
2835
2836                         /*
2837                          * Reseting the HBA is the only reliable way
2838                          * to shutdown interrupt when there is a
2839                          * ERROR.
2840                          */
2841                         lpfc_sli_send_reset(phba, phba->hba_state);
2842                 }
2843
2844                 spin_lock(phba->host->host_lock);
2845                 phba->work_ha |= work_ha_copy;
2846                 if (phba->work_wait)
2847                         wake_up(phba->work_wait);
2848                 spin_unlock(phba->host->host_lock);
2849         }
2850
2851         ha_copy &= ~(phba->work_ha_mask);
2852
2853         /*
2854          * Process all events on FCP ring.  Take the optimized path for
2855          * FCP IO.  Any other IO is slow path and is handled by
2856          * the worker thread.
2857          */
2858         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
2859         status >>= (4*LPFC_FCP_RING);
2860         if (status & HA_RXATT)
2861                 lpfc_sli_handle_fast_ring_event(phba,
2862                                                 &phba->sli.ring[LPFC_FCP_RING],
2863                                                 status);
2864         return IRQ_HANDLED;
2865
2866 } /* lpfc_intr_handler */