drivers/scsi/lpfc/lpfc_sli.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/delay.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_cmnd.h>
  29 #include <scsi/scsi_device.h>
  30 #include <scsi/scsi_host.h>
  31 #include <scsi/scsi_transport_fc.h>
  32
  33 #include "lpfc_hw.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_disc.h"
  36 #include "lpfc_scsi.h"
  37 #include "lpfc.h"
  38 #include "lpfc_crtn.h"
  39 #include "lpfc_logmsg.h"
  40 #include "lpfc_compat.h"
  41 #include "lpfc_debugfs.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, pmbox, psli, flag) \
  49                         lpfc_printf_log(phba, \
  50                                 KERN_INFO, \
  51                                 LOG_MBOX | LOG_SLI, \
  52                                 "(%d):0311 Mailbox command x%x cannot " \
  53                                 "issue Data: x%x x%x x%x\n", \
  54                                 pmbox->vport ? pmbox->vport->vpi : 0, \
  55                                 pmbox->mb.mbxCommand,           \
  56                                 phba->pport->port_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                 /* SLI-2/SLI-3 provide different sized iocbs.  Given a pointer
  70                  * to the start of the ring, and the slot number of the
  71                  * desired iocb entry, calc a pointer to that entry.
  72                  */
  73 static inline IOCB_t *
  74 lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
  75 {
  76         return (IOCB_t *) (((char *) pring->cmdringaddr) +
  77                            pring->cmdidx * phba->iocb_cmd_size);
  78 }
  79
  80 static inline IOCB_t *
  81 lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
  82 {
  83         return (IOCB_t *) (((char *) pring->rspringaddr) +
  84                            pring->rspidx * phba->iocb_rsp_size);
  85 }
  86
  87 static struct lpfc_iocbq *
  88 __lpfc_sli_get_iocbq(struct lpfc_hba *phba)
  89 {
  90         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
  91         struct lpfc_iocbq * iocbq = NULL;
  92
  93         list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
  94         return iocbq;
  95 }
  96
  97 struct lpfc_iocbq *
  98 lpfc_sli_get_iocbq(struct lpfc_hba *phba)
  99 {
 100         struct lpfc_iocbq * iocbq = NULL;
 101         unsigned long iflags;
 102
 103         spin_lock_irqsave(&phba->hbalock, iflags);
 104         iocbq = __lpfc_sli_get_iocbq(phba);
 105         spin_unlock_irqrestore(&phba->hbalock, iflags);
 106         return iocbq;
 107 }
 108
 109 static void
 110 __lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 111 {
 112         size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
 113
 114         /*
 115          * Clean all volatile data fields, preserve iotag and node struct.
 116          */
 117         memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
 118         list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
 119 }
 120
 121 void
 122 lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 123 {
 124         unsigned long iflags;
 125
 126         /*
 127          * Clean all volatile data fields, preserve iotag and node struct.
 128          */
 129         spin_lock_irqsave(&phba->hbalock, iflags);
 130         __lpfc_sli_release_iocbq(phba, iocbq);
 131         spin_unlock_irqrestore(&phba->hbalock, iflags);
 132 }
 133
 134 /*
 135  * Translate the iocb command to an iocb command type used to decide the final
 136  * disposition of each completed IOCB.
 137  */
 138 static lpfc_iocb_type
 139 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
 140 {
 141         lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
 142
 143         if (iocb_cmnd > CMD_MAX_IOCB_CMD)
 144                 return 0;
 145
 146         switch (iocb_cmnd) {
 147         case CMD_XMIT_SEQUENCE_CR:
 148         case CMD_XMIT_SEQUENCE_CX:
 149         case CMD_XMIT_BCAST_CN:
 150         case CMD_XMIT_BCAST_CX:
 151         case CMD_ELS_REQUEST_CR:
 152         case CMD_ELS_REQUEST_CX:
 153         case CMD_CREATE_XRI_CR:
 154         case CMD_CREATE_XRI_CX:
 155         case CMD_GET_RPI_CN:
 156         case CMD_XMIT_ELS_RSP_CX:
 157         case CMD_GET_RPI_CR:
 158         case CMD_FCP_IWRITE_CR:
 159         case CMD_FCP_IWRITE_CX:
 160         case CMD_FCP_IREAD_CR:
 161         case CMD_FCP_IREAD_CX:
 162         case CMD_FCP_ICMND_CR:
 163         case CMD_FCP_ICMND_CX:
 164         case CMD_FCP_TSEND_CX:
 165         case CMD_FCP_TRSP_CX:
 166         case CMD_FCP_TRECEIVE_CX:
 167         case CMD_FCP_AUTO_TRSP_CX:
 168         case CMD_ADAPTER_MSG:
 169         case CMD_ADAPTER_DUMP:
 170         case CMD_XMIT_SEQUENCE64_CR:
 171         case CMD_XMIT_SEQUENCE64_CX:
 172         case CMD_XMIT_BCAST64_CN:
 173         case CMD_XMIT_BCAST64_CX:
 174         case CMD_ELS_REQUEST64_CR:
 175         case CMD_ELS_REQUEST64_CX:
 176         case CMD_FCP_IWRITE64_CR:
 177         case CMD_FCP_IWRITE64_CX:
 178         case CMD_FCP_IREAD64_CR:
 179         case CMD_FCP_IREAD64_CX:
 180         case CMD_FCP_ICMND64_CR:
 181         case CMD_FCP_ICMND64_CX:
 182         case CMD_FCP_TSEND64_CX:
 183         case CMD_FCP_TRSP64_CX:
 184         case CMD_FCP_TRECEIVE64_CX:
 185         case CMD_GEN_REQUEST64_CR:
 186         case CMD_GEN_REQUEST64_CX:
 187         case CMD_XMIT_ELS_RSP64_CX:
 188                 type = LPFC_SOL_IOCB;
 189                 break;
 190         case CMD_ABORT_XRI_CN:
 191         case CMD_ABORT_XRI_CX:
 192         case CMD_CLOSE_XRI_CN:
 193         case CMD_CLOSE_XRI_CX:
 194         case CMD_XRI_ABORTED_CX:
 195         case CMD_ABORT_MXRI64_CN:
 196                 type = LPFC_ABORT_IOCB;
 197                 break;
 198         case CMD_RCV_SEQUENCE_CX:
 199         case CMD_RCV_ELS_REQ_CX:
 200         case CMD_RCV_SEQUENCE64_CX:
 201         case CMD_RCV_ELS_REQ64_CX:
 202         case CMD_ASYNC_STATUS:
 203         case CMD_IOCB_RCV_SEQ64_CX:
 204         case CMD_IOCB_RCV_ELS64_CX:
 205         case CMD_IOCB_RCV_CONT64_CX:
 206                 type = LPFC_UNSOL_IOCB;
 207                 break;
 208         default:
 209                 type = LPFC_UNKNOWN_IOCB;
 210                 break;
 211         }
 212
 213         return type;
 214 }
 215
 216 static int
 217 lpfc_sli_ring_map(struct lpfc_hba *phba)
 218 {
 219         struct lpfc_sli *psli = &phba->sli;
 220         LPFC_MBOXQ_t *pmb;
 221         MAILBOX_t *pmbox;
 222         int i, rc, ret = 0;
 223
 224         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 225         if (!pmb)
 226                 return -ENOMEM;
 227         pmbox = &pmb->mb;
 228         phba->link_state = LPFC_INIT_MBX_CMDS;
 229         for (i = 0; i < psli->num_rings; i++) {
 230                 lpfc_config_ring(phba, i, pmb);
 231                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 232                 if (rc != MBX_SUCCESS) {
 233                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 234                                         "0446 Adapter failed to init (%d), "
 235                                         "mbxCmd x%x CFG_RING, mbxStatus x%x, "
 236                                         "ring %d\n",
 237                                         rc, pmbox->mbxCommand,
 238                                         pmbox->mbxStatus, i);
 239                         phba->link_state = LPFC_HBA_ERROR;
 240                         ret = -ENXIO;
 241                         break;
 242                 }
 243         }
 244         mempool_free(pmb, phba->mbox_mem_pool);
 245         return ret;
 246 }
 247
 248 static int
 249 lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 250                         struct lpfc_iocbq *piocb)
 251 {
 252         list_add_tail(&piocb->list, &pring->txcmplq);
 253         pring->txcmplq_cnt++;
 254         if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
 255            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
 256            (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
 257                 if (!piocb->vport)
 258                         BUG();
 259                 else
 260                         mod_timer(&piocb->vport->els_tmofunc,
 261                                   jiffies + HZ * (phba->fc_ratov << 1));
 262         }
 263
 264
 265         return 0;
 266 }
 267
 268 static struct lpfc_iocbq *
 269 lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 270 {
 271         struct lpfc_iocbq *cmd_iocb;
 272
 273         list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list);
 274         if (cmd_iocb != NULL)
 275                 pring->txq_cnt--;
 276         return cmd_iocb;
 277 }
 278
 279 static IOCB_t *
 280 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 281 {
 282         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
 283                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
 284                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
 285         uint32_t  max_cmd_idx = pring->numCiocb;
 286
 287         if ((pring->next_cmdidx == pring->cmdidx) &&
 288            (++pring->next_cmdidx >= max_cmd_idx))
 289                 pring->next_cmdidx = 0;
 290
 291         if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
 292
 293                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
 294
 295                 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
 296                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 297                                         "0315 Ring %d issue: portCmdGet %d "
 298                                         "is bigger then cmd ring %d\n",
 299                                         pring->ringno,
 300                                         pring->local_getidx, max_cmd_idx);
 301
 302                         phba->link_state = LPFC_HBA_ERROR;
 303                         /*
 304                          * All error attention handlers are posted to
 305                          * worker thread
 306                          */
 307                         phba->work_ha |= HA_ERATT;
 308                         phba->work_hs = HS_FFER3;
 309
 310                         /* hbalock should already be held */
 311                         if (phba->work_wait)
 312                                 lpfc_worker_wake_up(phba);
 313
 314                         return NULL;
 315                 }
 316
 317                 if (pring->local_getidx == pring->next_cmdidx)
 318                         return NULL;
 319         }
 320
 321         return lpfc_cmd_iocb(phba, pring);
 322 }
 323
 324 uint16_t
 325 lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 326 {
 327         struct lpfc_iocbq **new_arr;
 328         struct lpfc_iocbq **old_arr;
 329         size_t new_len;
 330         struct lpfc_sli *psli = &phba->sli;
 331         uint16_t iotag;
 332
 333         spin_lock_irq(&phba->hbalock);
 334         iotag = psli->last_iotag;
 335         if(++iotag < psli->iocbq_lookup_len) {
 336                 psli->last_iotag = iotag;
 337                 psli->iocbq_lookup[iotag] = iocbq;
 338                 spin_unlock_irq(&phba->hbalock);
 339                 iocbq->iotag = iotag;
 340                 return iotag;
 341         } else if (psli->iocbq_lookup_len < (0xffff
 342                                            - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
 343                 new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
 344                 spin_unlock_irq(&phba->hbalock);
 345                 new_arr = kzalloc(new_len * sizeof (struct lpfc_iocbq *),
 346                                   GFP_KERNEL);
 347                 if (new_arr) {
 348                         spin_lock_irq(&phba->hbalock);
 349                         old_arr = psli->iocbq_lookup;
 350                         if (new_len <= psli->iocbq_lookup_len) {
 351                                 /* highly unprobable case */
 352                                 kfree(new_arr);
 353                                 iotag = psli->last_iotag;
 354                                 if(++iotag < psli->iocbq_lookup_len) {
 355                                         psli->last_iotag = iotag;
 356                                         psli->iocbq_lookup[iotag] = iocbq;
 357                                         spin_unlock_irq(&phba->hbalock);
 358                                         iocbq->iotag = iotag;
 359                                         return iotag;
 360                                 }
 361                                 spin_unlock_irq(&phba->hbalock);
 362                                 return 0;
 363                         }
 364                         if (psli->iocbq_lookup)
 365                                 memcpy(new_arr, old_arr,
 366                                        ((psli->last_iotag  + 1) *
 367                                         sizeof (struct lpfc_iocbq *)));
 368                         psli->iocbq_lookup = new_arr;
 369                         psli->iocbq_lookup_len = new_len;
 370                         psli->last_iotag = iotag;
 371                         psli->iocbq_lookup[iotag] = iocbq;
 372                         spin_unlock_irq(&phba->hbalock);
 373                         iocbq->iotag = iotag;
 374                         kfree(old_arr);
 375                         return iotag;
 376                 }
 377         } else
 378                 spin_unlock_irq(&phba->hbalock);
 379
 380         lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
 381                         "0318 Failed to allocate IOTAG.last IOTAG is %d\n",
 382                         psli->last_iotag);
 383
 384         return 0;
 385 }
 386
 387 static void
 388 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 389                 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
 390 {
 391         /*
 392          * Set up an iotag
 393          */
 394         nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
 395
 396         if (pring->ringno == LPFC_ELS_RING) {
 397                 lpfc_debugfs_slow_ring_trc(phba,
 398                         "IOCB cmd ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
 399                         *(((uint32_t *) &nextiocb->iocb) + 4),
 400                         *(((uint32_t *) &nextiocb->iocb) + 6),
 401                         *(((uint32_t *) &nextiocb->iocb) + 7));
 402         }
 403
 404         /*
 405          * Issue iocb command to adapter
 406          */
 407         lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size);
 408         wmb();
 409         pring->stats.iocb_cmd++;
 410
 411         /*
 412          * If there is no completion routine to call, we can release the
 413          * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
 414          * that have no rsp ring completion, iocb_cmpl MUST be NULL.
 415          */
 416         if (nextiocb->iocb_cmpl)
 417                 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
 418         else
 419                 __lpfc_sli_release_iocbq(phba, nextiocb);
 420
 421         /*
 422          * Let the HBA know what IOCB slot will be the next one the
 423          * driver will put a command into.
 424          */
 425         pring->cmdidx = pring->next_cmdidx;
 426         writel(pring->cmdidx, &phba->host_gp[pring->ringno].cmdPutInx);
 427 }
 428
 429 static void
 430 lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 431 {
 432         int ringno = pring->ringno;
 433
 434         pring->flag |= LPFC_CALL_RING_AVAILABLE;
 435
 436         wmb();
 437
 438         /*
 439          * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
 440          * The HBA will tell us when an IOCB entry is available.
 441          */
 442         writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
 443         readl(phba->CAregaddr); /* flush */
 444
 445         pring->stats.iocb_cmd_full++;
 446 }
 447
 448 static void
 449 lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 450 {
 451         int ringno = pring->ringno;
 452
 453         /*
 454          * Tell the HBA that there is work to do in this ring.
 455          */
 456         wmb();
 457         writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
 458         readl(phba->CAregaddr); /* flush */
 459 }
 460
 461 static void
 462 lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 463 {
 464         IOCB_t *iocb;
 465         struct lpfc_iocbq *nextiocb;
 466
 467         /*
 468          * Check to see if:
 469          *  (a) there is anything on the txq to send
 470          *  (b) link is up
 471          *  (c) link attention events can be processed (fcp ring only)
 472          *  (d) IOCB processing is not blocked by the outstanding mbox command.
 473          */
 474         if (pring->txq_cnt &&
 475             lpfc_is_link_up(phba) &&
 476             (pring->ringno != phba->sli.fcp_ring ||
 477              phba->sli.sli_flag & LPFC_PROCESS_LA)) {
 478
 479                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
 480                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
 481                         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
 482
 483                 if (iocb)
 484                         lpfc_sli_update_ring(phba, pring);
 485                 else
 486                         lpfc_sli_update_full_ring(phba, pring);
 487         }
 488
 489         return;
 490 }
 491
 492 static struct lpfc_hbq_entry *
 493 lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
 494 {
 495         struct hbq_s *hbqp = &phba->hbqs[hbqno];
 496
 497         if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx &&
 498             ++hbqp->next_hbqPutIdx >= hbqp->entry_count)
 499                 hbqp->next_hbqPutIdx = 0;
 500
 501         if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) {
 502                 uint32_t raw_index = phba->hbq_get[hbqno];
 503                 uint32_t getidx = le32_to_cpu(raw_index);
 504
 505                 hbqp->local_hbqGetIdx = getidx;
 506
 507                 if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) {
 508                         lpfc_printf_log(phba, KERN_ERR,
 509                                         LOG_SLI | LOG_VPORT,
 510                                         "1802 HBQ %d: local_hbqGetIdx "
 511                                         "%u is > than hbqp->entry_count %u\n",
 512                                         hbqno, hbqp->local_hbqGetIdx,
 513                                         hbqp->entry_count);
 514
 515                         phba->link_state = LPFC_HBA_ERROR;
 516                         return NULL;
 517                 }
 518
 519                 if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)
 520                         return NULL;
 521         }
 522
 523         return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt +
 524                         hbqp->hbqPutIdx;
 525 }
 526
 527 void
 528 lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
 529 {
 530         struct lpfc_dmabuf *dmabuf, *next_dmabuf;
 531         struct hbq_dmabuf *hbq_buf;
 532         int i, hbq_count;
 533
 534         hbq_count = lpfc_sli_hbq_count();
 535         /* Return all memory used by all HBQs */
 536         for (i = 0; i < hbq_count; ++i) {
 537                 list_for_each_entry_safe(dmabuf, next_dmabuf,
 538                                 &phba->hbqs[i].hbq_buffer_list, list) {
 539                         hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
 540                         list_del(&hbq_buf->dbuf.list);
 541                         (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
 542                 }
 543                 phba->hbqs[i].buffer_count = 0;
 544         }
 545 }
 546
 547 static struct lpfc_hbq_entry *
 548 lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
 549                          struct hbq_dmabuf *hbq_buf)
 550 {
 551         struct lpfc_hbq_entry *hbqe;
 552         dma_addr_t physaddr = hbq_buf->dbuf.phys;
 553
 554         /* Get next HBQ entry slot to use */
 555         hbqe = lpfc_sli_next_hbq_slot(phba, hbqno);
 556         if (hbqe) {
 557                 struct hbq_s *hbqp = &phba->hbqs[hbqno];
 558
 559                 hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
 560                 hbqe->bde.addrLow  = le32_to_cpu(putPaddrLow(physaddr));
 561                 hbqe->bde.tus.f.bdeSize = hbq_buf->size;
 562                 hbqe->bde.tus.f.bdeFlags = 0;
 563                 hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w);
 564                 hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag);
 565                                 /* Sync SLIM */
 566                 hbqp->hbqPutIdx = hbqp->next_hbqPutIdx;
 567                 writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno);
 568                                 /* flush */
 569                 readl(phba->hbq_put + hbqno);
 570                 list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list);
 571         }
 572         return hbqe;
 573 }
 574
 575 static struct lpfc_hbq_init lpfc_els_hbq = {
 576         .rn = 1,
 577         .entry_count = 200,
 578         .mask_count = 0,
 579         .profile = 0,
 580         .ring_mask = (1 << LPFC_ELS_RING),
 581         .buffer_count = 0,
 582         .init_count = 20,
 583         .add_count = 5,
 584 };
 585
 586 static struct lpfc_hbq_init lpfc_extra_hbq = {
 587         .rn = 1,
 588         .entry_count = 200,
 589         .mask_count = 0,
 590         .profile = 0,
 591         .ring_mask = (1 << LPFC_EXTRA_RING),
 592         .buffer_count = 0,
 593         .init_count = 0,
 594         .add_count = 5,
 595 };
 596
 597 struct lpfc_hbq_init *lpfc_hbq_defs[] = {
 598         &lpfc_els_hbq,
 599         &lpfc_extra_hbq,
 600 };
 601
 602 static int
 603 lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
 604 {
 605         uint32_t i, start, end;
 606         struct hbq_dmabuf *hbq_buffer;
 607
 608         if (!phba->hbqs[hbqno].hbq_alloc_buffer) {
 609                 return 0;
 610         }
 611
 612         start = phba->hbqs[hbqno].buffer_count;
 613         end = count + start;
 614         if (end > lpfc_hbq_defs[hbqno]->entry_count) {
 615                 end = lpfc_hbq_defs[hbqno]->entry_count;
 616         }
 617
 618         /* Populate HBQ entries */
 619         for (i = start; i < end; i++) {
 620                 hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
 621                 if (!hbq_buffer)
 622                         return 1;
 623                 hbq_buffer->tag = (i | (hbqno << 16));
 624                 if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
 625                         phba->hbqs[hbqno].buffer_count++;
 626                 else
 627                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
 628         }
 629         return 0;
 630 }
 631
 632 int
 633 lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno)
 634 {
 635         return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
 636                                          lpfc_hbq_defs[qno]->add_count));
 637 }
 638
 639 static int
 640 lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
 641 {
 642         return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
 643                                          lpfc_hbq_defs[qno]->init_count));
 644 }
 645
 646 static struct hbq_dmabuf *
 647 lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
 648 {
 649         struct lpfc_dmabuf *d_buf;
 650         struct hbq_dmabuf *hbq_buf;
 651         uint32_t hbqno;
 652
 653         hbqno = tag >> 16;
 654         if (hbqno >= LPFC_MAX_HBQS)
 655                 return NULL;
 656
 657         list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) {
 658                 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
 659                 if (hbq_buf->tag == tag) {
 660                         return hbq_buf;
 661                 }
 662         }
 663         lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT,
 664                         "1803 Bad hbq tag. Data: x%x x%x\n",
 665                         tag, phba->hbqs[tag >> 16].buffer_count);
 666         return NULL;
 667 }
 668
 669 void
 670 lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer)
 671 {
 672         uint32_t hbqno;
 673
 674         if (hbq_buffer) {
 675                 hbqno = hbq_buffer->tag >> 16;
 676                 if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
 677                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
 678                 }
 679         }
 680 }
 681
 682 static int
 683 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
 684 {
 685         uint8_t ret;
 686
 687         switch (mbxCommand) {
 688         case MBX_LOAD_SM:
 689         case MBX_READ_NV:
 690         case MBX_WRITE_NV:
 691         case MBX_WRITE_VPARMS:
 692         case MBX_RUN_BIU_DIAG:
 693         case MBX_INIT_LINK:
 694         case MBX_DOWN_LINK:
 695         case MBX_CONFIG_LINK:
 696         case MBX_CONFIG_RING:
 697         case MBX_RESET_RING:
 698         case MBX_READ_CONFIG:
 699         case MBX_READ_RCONFIG:
 700         case MBX_READ_SPARM:
 701         case MBX_READ_STATUS:
 702         case MBX_READ_RPI:
 703         case MBX_READ_XRI:
 704         case MBX_READ_REV:
 705         case MBX_READ_LNK_STAT:
 706         case MBX_REG_LOGIN:
 707         case MBX_UNREG_LOGIN:
 708         case MBX_READ_LA:
 709         case MBX_CLEAR_LA:
 710         case MBX_DUMP_MEMORY:
 711         case MBX_DUMP_CONTEXT:
 712         case MBX_RUN_DIAGS:
 713         case MBX_RESTART:
 714         case MBX_UPDATE_CFG:
 715         case MBX_DOWN_LOAD:
 716         case MBX_DEL_LD_ENTRY:
 717         case MBX_RUN_PROGRAM:
 718         case MBX_SET_MASK:
 719         case MBX_SET_SLIM:
 720         case MBX_UNREG_D_ID:
 721         case MBX_KILL_BOARD:
 722         case MBX_CONFIG_FARP:
 723         case MBX_BEACON:
 724         case MBX_LOAD_AREA:
 725         case MBX_RUN_BIU_DIAG64:
 726         case MBX_CONFIG_PORT:
 727         case MBX_READ_SPARM64:
 728         case MBX_READ_RPI64:
 729         case MBX_REG_LOGIN64:
 730         case MBX_READ_LA64:
 731         case MBX_FLASH_WR_ULA:
 732         case MBX_SET_DEBUG:
 733         case MBX_LOAD_EXP_ROM:
 734         case MBX_ASYNCEVT_ENABLE:
 735         case MBX_REG_VPI:
 736         case MBX_UNREG_VPI:
 737         case MBX_HEARTBEAT:
 738                 ret = mbxCommand;
 739                 break;
 740         default:
 741                 ret = MBX_SHUTDOWN;
 742                 break;
 743         }
 744         return ret;
 745 }
 746 static void
 747 lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 748 {
 749         wait_queue_head_t *pdone_q;
 750         unsigned long drvr_flag;
 751
 752         /*
 753          * If pdone_q is empty, the driver thread gave up waiting and
 754          * continued running.
 755          */
 756         pmboxq->mbox_flag |= LPFC_MBX_WAKE;
 757         spin_lock_irqsave(&phba->hbalock, drvr_flag);
 758         pdone_q = (wait_queue_head_t *) pmboxq->context1;
 759         if (pdone_q)
 760                 wake_up_interruptible(pdone_q);
 761         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
 762         return;
 763 }
 764
 765 void
 766 lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 767 {
 768         struct lpfc_dmabuf *mp;
 769         uint16_t rpi;
 770         int rc;
 771
 772         mp = (struct lpfc_dmabuf *) (pmb->context1);
 773
 774         if (mp) {
 775                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 776                 kfree(mp);
 777         }
 778
 779         /*
 780          * If a REG_LOGIN succeeded  after node is destroyed or node
 781          * is in re-discovery driver need to cleanup the RPI.
 782          */
 783         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 784             pmb->mb.mbxCommand == MBX_REG_LOGIN64 &&
 785             !pmb->mb.mbxStatus) {
 786
 787                 rpi = pmb->mb.un.varWords[0];
 788                 lpfc_unreg_login(phba, pmb->mb.un.varRegLogin.vpi, rpi, pmb);
 789                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 790                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 791                 if (rc != MBX_NOT_FINISHED)
 792                         return;
 793         }
 794
 795         mempool_free(pmb, phba->mbox_mem_pool);
 796         return;
 797 }
 798
 799 int
 800 lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
 801 {
 802         MAILBOX_t *pmbox;
 803         LPFC_MBOXQ_t *pmb;
 804         int rc;
 805         LIST_HEAD(cmplq);
 806
 807         phba->sli.slistat.mbox_event++;
 808
 809         /* Get all completed mailboxe buffers into the cmplq */
 810         spin_lock_irq(&phba->hbalock);
 811         list_splice_init(&phba->sli.mboxq_cmpl, &cmplq);
 812         spin_unlock_irq(&phba->hbalock);
 813
 814         /* Get a Mailbox buffer to setup mailbox commands for callback */
 815         do {
 816                 list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list);
 817                 if (pmb == NULL)
 818                         break;
 819
 820                 pmbox = &pmb->mb;
 821
 822                 if (pmbox->mbxCommand != MBX_HEARTBEAT) {
 823                         if (pmb->vport) {
 824                                 lpfc_debugfs_disc_trc(pmb->vport,
 825                                         LPFC_DISC_TRC_MBOX_VPORT,
 826                                         "MBOX cmpl vport: cmd:x%x mb:x%x x%x",
 827                                         (uint32_t)pmbox->mbxCommand,
 828                                         pmbox->un.varWords[0],
 829                                         pmbox->un.varWords[1]);
 830                         }
 831                         else {
 832                                 lpfc_debugfs_disc_trc(phba->pport,
 833                                         LPFC_DISC_TRC_MBOX,
 834                                         "MBOX cmpl:       cmd:x%x mb:x%x x%x",
 835                                         (uint32_t)pmbox->mbxCommand,
 836                                         pmbox->un.varWords[0],
 837                                         pmbox->un.varWords[1]);
 838                         }
 839                 }
 840
 841                 /*
 842                  * It is a fatal error if unknown mbox command completion.
 843                  */
 844                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
 845                     MBX_SHUTDOWN) {
 846                         /* Unknow mailbox command compl */
 847                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
 848                                         "(%d):0323 Unknown Mailbox command "
 849                                         "%x Cmpl\n",
 850                                         pmb->vport ? pmb->vport->vpi : 0,
 851                                         pmbox->mbxCommand);
 852                         phba->link_state = LPFC_HBA_ERROR;
 853                         phba->work_hs = HS_FFER3;
 854                         lpfc_handle_eratt(phba);
 855                         continue;
 856                 }
 857
 858                 if (pmbox->mbxStatus) {
 859                         phba->sli.slistat.mbox_stat_err++;
 860                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
 861                                 /* Mbox cmd cmpl error - RETRYing */
 862                                 lpfc_printf_log(phba, KERN_INFO,
 863                                                 LOG_MBOX | LOG_SLI,
 864                                                 "(%d):0305 Mbox cmd cmpl "
 865                                                 "error - RETRYing Data: x%x "
 866                                                 "x%x x%x x%x\n",
 867                                                 pmb->vport ? pmb->vport->vpi :0,
 868                                                 pmbox->mbxCommand,
 869                                                 pmbox->mbxStatus,
 870                                                 pmbox->un.varWords[0],
 871                                                 pmb->vport->port_state);
 872                                 pmbox->mbxStatus = 0;
 873                                 pmbox->mbxOwner = OWN_HOST;
 874                                 spin_lock_irq(&phba->hbalock);
 875                                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 876                                 spin_unlock_irq(&phba->hbalock);
 877                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 878                                 if (rc == MBX_SUCCESS)
 879                                         continue;
 880                         }
 881                 }
 882
 883                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
 884                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
 885                                 "(%d):0307 Mailbox cmd x%x Cmpl x%p "
 886                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
 887                                 pmb->vport ? pmb->vport->vpi : 0,
 888                                 pmbox->mbxCommand,
 889                                 pmb->mbox_cmpl,
 890                                 *((uint32_t *) pmbox),
 891                                 pmbox->un.varWords[0],
 892                                 pmbox->un.varWords[1],
 893                                 pmbox->un.varWords[2],
 894                                 pmbox->un.varWords[3],
 895                                 pmbox->un.varWords[4],
 896                                 pmbox->un.varWords[5],
 897                                 pmbox->un.varWords[6],
 898                                 pmbox->un.varWords[7]);
 899
 900                 if (pmb->mbox_cmpl)
 901                         pmb->mbox_cmpl(phba,pmb);
 902         } while (1);
 903         return 0;
 904 }
 905
 906 static struct lpfc_dmabuf *
 907 lpfc_sli_replace_hbqbuff(struct lpfc_hba *phba, uint32_t tag)
 908 {
 909         struct hbq_dmabuf *hbq_entry, *new_hbq_entry;
 910         uint32_t hbqno;
 911         void *virt;             /* virtual address ptr */
 912         dma_addr_t phys;        /* mapped address */
 913
 914         hbq_entry = lpfc_sli_hbqbuf_find(phba, tag);
 915         if (hbq_entry == NULL)
 916                 return NULL;
 917         list_del(&hbq_entry->dbuf.list);
 918
 919         hbqno = tag >> 16;
 920         new_hbq_entry = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
 921         if (new_hbq_entry == NULL)
 922                 return &hbq_entry->dbuf;
 923         new_hbq_entry->tag = -1;
 924         phys = new_hbq_entry->dbuf.phys;
 925         virt = new_hbq_entry->dbuf.virt;
 926         new_hbq_entry->dbuf.phys = hbq_entry->dbuf.phys;
 927         new_hbq_entry->dbuf.virt = hbq_entry->dbuf.virt;
 928         hbq_entry->dbuf.phys = phys;
 929         hbq_entry->dbuf.virt = virt;
 930         lpfc_sli_free_hbq(phba, hbq_entry);
 931         return &new_hbq_entry->dbuf;
 932 }
 933
 934 static struct lpfc_dmabuf *
 935 lpfc_sli_get_buff(struct lpfc_hba *phba,
 936                         struct lpfc_sli_ring *pring,
 937                         uint32_t tag)
 938 {
 939         if (tag & QUE_BUFTAG_BIT)
 940                 return lpfc_sli_ring_taggedbuf_get(phba, pring, tag);
 941         else
 942                 return lpfc_sli_replace_hbqbuff(phba, tag);
 943 }
 944
 945 static int
 946 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 947                             struct lpfc_iocbq *saveq)
 948 {
 949         IOCB_t           * irsp;
 950         WORD5            * w5p;
 951         uint32_t           Rctl, Type;
 952         uint32_t           match, i;
 953         struct lpfc_iocbq *iocbq;
 954
 955         match = 0;
 956         irsp = &(saveq->iocb);
 957
 958         if (irsp->ulpCommand == CMD_ASYNC_STATUS) {
 959                 if (pring->lpfc_sli_rcv_async_status)
 960                         pring->lpfc_sli_rcv_async_status(phba, pring, saveq);
 961                 else
 962                         lpfc_printf_log(phba,
 963                                         KERN_WARNING,
 964                                         LOG_SLI,
 965                                         "0316 Ring %d handler: unexpected "
 966                                         "ASYNC_STATUS iocb received evt_code "
 967                                         "0x%x\n",
 968                                         pring->ringno,
 969                                         irsp->un.asyncstat.evt_code);
 970                 return 1;
 971         }
 972
 973         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
 974             || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)
 975             || (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)
 976             || (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX)) {
 977                 Rctl = FC_ELS_REQ;
 978                 Type = FC_ELS_DATA;
 979         } else {
 980                 w5p =
 981                     (WORD5 *) & (saveq->iocb.un.
 982                                  ulpWord[5]);
 983                 Rctl = w5p->hcsw.Rctl;
 984                 Type = w5p->hcsw.Type;
 985
 986                 /* Firmware Workaround */
 987                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
 988                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX ||
 989                          irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
 990                         Rctl = FC_ELS_REQ;
 991                         Type = FC_ELS_DATA;
 992                         w5p->hcsw.Rctl = Rctl;
 993                         w5p->hcsw.Type = Type;
 994                 }
 995         }
 996
 997         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
 998                 struct lpfc_hbq_entry *hbqe_1, *hbqe_2;
 999                 hbqe_1 = (struct lpfc_hbq_entry *) &saveq->iocb.un.ulpWord[0];
1000                 hbqe_2 = (struct lpfc_hbq_entry *) &saveq->iocb.
1001                                 unsli3.sli3Words[4];
1002
1003                 if (irsp->ulpBdeCount != 0) {
1004                         saveq->context2 = lpfc_sli_get_buff(phba, pring,
1005                                                 irsp->un.ulpWord[3]);
1006                         if (!saveq->context2)
1007                                 lpfc_printf_log(phba,
1008                                         KERN_ERR,
1009                                         LOG_SLI,
1010                                         "0341 Ring %d Cannot find buffer for "
1011                                         "an unsolicited iocb. tag 0x%x\n",
1012                                         pring->ringno,
1013                                         irsp->un.ulpWord[3]);
1014
1015                 }
1016                 if (irsp->ulpBdeCount == 2) {
1017                         saveq->context3 = lpfc_sli_get_buff(phba, pring,
1018                                                 irsp->unsli3.sli3Words[7]);
1019                         if (!saveq->context3)
1020                                 lpfc_printf_log(phba,
1021                                         KERN_ERR,
1022                                         LOG_SLI,
1023                                         "0342 Ring %d Cannot find buffer for an"
1024                                         " unsolicited iocb. tag 0x%x\n",
1025                                         pring->ringno,
1026                                         irsp->unsli3.sli3Words[7]);
1027                 }
1028                 list_for_each_entry(iocbq, &saveq->list, list) {
1029                         hbqe_1 = (struct lpfc_hbq_entry *) &iocbq->iocb.
1030                                 un.ulpWord[0];
1031                         hbqe_2 = (struct lpfc_hbq_entry *) &iocbq->iocb.
1032                                 unsli3.sli3Words[4];
1033                         irsp = &(iocbq->iocb);
1034
1035                         if (irsp->ulpBdeCount != 0) {
1036                                 iocbq->context2 = lpfc_sli_get_buff(phba, pring,
1037                                                         irsp->un.ulpWord[3]);
1038                                 if (!saveq->context2)
1039                                         lpfc_printf_log(phba,
1040                                                 KERN_ERR,
1041                                                 LOG_SLI,
1042                                                 "0343 Ring %d Cannot find "
1043                                                 "buffer for an unsolicited iocb"
1044                                                 ". tag 0x%x\n", pring->ringno,
1045                                                 irsp->un.ulpWord[3]);
1046                         }
1047                         if (irsp->ulpBdeCount == 2) {
1048                                 iocbq->context3 = lpfc_sli_get_buff(phba, pring,
1049                                                 irsp->unsli3.sli3Words[7]);
1050                                 if (!saveq->context3)
1051                                         lpfc_printf_log(phba,
1052                                                 KERN_ERR,
1053                                                 LOG_SLI,
1054                                                 "0344 Ring %d Cannot find "
1055                                                 "buffer for an unsolicited "
1056                                                 "iocb. tag 0x%x\n",
1057                                                 pring->ringno,
1058                                                 irsp->unsli3.sli3Words[7]);
1059                         }
1060                 }
1061         }
1062
1063         /* unSolicited Responses */
1064         if (pring->prt[0].profile) {
1065                 if (pring->prt[0].lpfc_sli_rcv_unsol_event)
1066                         (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
1067                                                                         saveq);
1068                 match = 1;
1069         } else {
1070                 /* We must search, based on rctl / type
1071                    for the right routine */
1072                 for (i = 0; i < pring->num_mask;
1073                      i++) {
1074                         if ((pring->prt[i].rctl ==
1075                              Rctl)
1076                             && (pring->prt[i].
1077                                 type == Type)) {
1078                                 if (pring->prt[i].lpfc_sli_rcv_unsol_event)
1079                                         (pring->prt[i].lpfc_sli_rcv_unsol_event)
1080                                                         (phba, pring, saveq);
1081                                 match = 1;
1082                                 break;
1083                         }
1084                 }
1085         }
1086         if (match == 0) {
1087                 /* Unexpected Rctl / Type received */
1088                 /* Ring <ringno> handler: unexpected
1089                    Rctl <Rctl> Type <Type> received */
1090                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1091                                 "0313 Ring %d handler: unexpected Rctl x%x "
1092                                 "Type x%x received\n",
1093                                 pring->ringno, Rctl, Type);
1094         }
1095         return 1;
1096 }
1097
1098 static struct lpfc_iocbq *
1099 lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
1100                       struct lpfc_sli_ring *pring,
1101                       struct lpfc_iocbq *prspiocb)
1102 {
1103         struct lpfc_iocbq *cmd_iocb = NULL;
1104         uint16_t iotag;
1105
1106         iotag = prspiocb->iocb.ulpIoTag;
1107
1108         if (iotag != 0 && iotag <= phba->sli.last_iotag) {
1109                 cmd_iocb = phba->sli.iocbq_lookup[iotag];
1110                 list_del_init(&cmd_iocb->list);
1111                 pring->txcmplq_cnt--;
1112                 return cmd_iocb;
1113         }
1114
1115         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1116                         "0317 iotag x%x is out off "
1117                         "range: max iotag x%x wd0 x%x\n",
1118                         iotag, phba->sli.last_iotag,
1119                         *(((uint32_t *) &prspiocb->iocb) + 7));
1120         return NULL;
1121 }
1122
1123 static int
1124 lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1125                           struct lpfc_iocbq *saveq)
1126 {
1127         struct lpfc_iocbq *cmdiocbp;
1128         int rc = 1;
1129         unsigned long iflag;
1130
1131         /* Based on the iotag field, get the cmd IOCB from the txcmplq */
1132         spin_lock_irqsave(&phba->hbalock, iflag);
1133         cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
1134         spin_unlock_irqrestore(&phba->hbalock, iflag);
1135
1136         if (cmdiocbp) {
1137                 if (cmdiocbp->iocb_cmpl) {
1138                         /*
1139                          * Post all ELS completions to the worker thread.
1140                          * All other are passed to the completion callback.
1141                          */
1142                         if (pring->ringno == LPFC_ELS_RING) {
1143                                 if (cmdiocbp->iocb_flag & LPFC_DRIVER_ABORTED) {
1144                                         cmdiocbp->iocb_flag &=
1145                                                 ~LPFC_DRIVER_ABORTED;
1146                                         saveq->iocb.ulpStatus =
1147                                                 IOSTAT_LOCAL_REJECT;
1148                                         saveq->iocb.un.ulpWord[4] =
1149                                                 IOERR_SLI_ABORTED;
1150
1151                                         /* Firmware could still be in progress
1152                                          * of DMAing payload, so don't free data
1153                                          * buffer till after a hbeat.
1154                                          */
1155                                         saveq->iocb_flag |= LPFC_DELAY_MEM_FREE;
1156                                 }
1157                         }
1158                         (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
1159                 } else
1160                         lpfc_sli_release_iocbq(phba, cmdiocbp);
1161         } else {
1162                 /*
1163                  * Unknown initiating command based on the response iotag.
1164                  * This could be the case on the ELS ring because of
1165                  * lpfc_els_abort().
1166                  */
1167                 if (pring->ringno != LPFC_ELS_RING) {
1168                         /*
1169                          * Ring <ringno> handler: unexpected completion IoTag
1170                          * <IoTag>
1171                          */
1172                         lpfc_printf_vlog(cmdiocbp->vport, KERN_WARNING, LOG_SLI,
1173                                          "0322 Ring %d handler: "
1174                                          "unexpected completion IoTag x%x "
1175                                          "Data: x%x x%x x%x x%x\n",
1176                                          pring->ringno,
1177                                          saveq->iocb.ulpIoTag,
1178                                          saveq->iocb.ulpStatus,
1179                                          saveq->iocb.un.ulpWord[4],
1180                                          saveq->iocb.ulpCommand,
1181                                          saveq->iocb.ulpContext);
1182                 }
1183         }
1184
1185         return rc;
1186 }
1187
1188 static void
1189 lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1190 {
1191         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1192                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1193                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1194         /*
1195          * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1196          * rsp ring <portRspMax>
1197          */
1198         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1199                         "0312 Ring %d handler: portRspPut %d "
1200                         "is bigger then rsp ring %d\n",
1201                         pring->ringno, le32_to_cpu(pgp->rspPutInx),
1202                         pring->numRiocb);
1203
1204         phba->link_state = LPFC_HBA_ERROR;
1205
1206         /*
1207          * All error attention handlers are posted to
1208          * worker thread
1209          */
1210         phba->work_ha |= HA_ERATT;
1211         phba->work_hs = HS_FFER3;
1212
1213         /* hbalock should already be held */
1214         if (phba->work_wait)
1215                 lpfc_worker_wake_up(phba);
1216
1217         return;
1218 }
1219
1220 void lpfc_sli_poll_fcp_ring(struct lpfc_hba *phba)
1221 {
1222         struct lpfc_sli      *psli  = &phba->sli;
1223         struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
1224         IOCB_t *irsp = NULL;
1225         IOCB_t *entry = NULL;
1226         struct lpfc_iocbq *cmdiocbq = NULL;
1227         struct lpfc_iocbq rspiocbq;
1228         struct lpfc_pgp *pgp;
1229         uint32_t status;
1230         uint32_t portRspPut, portRspMax;
1231         int type;
1232         uint32_t rsp_cmpl = 0;
1233         uint32_t ha_copy;
1234         unsigned long iflags;
1235
1236         pring->stats.iocb_event++;
1237
1238         pgp = (phba->sli_rev == 3) ?
1239                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1240                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1241
1242
1243         /*
1244          * The next available response entry should never exceed the maximum
1245          * entries.  If it does, treat it as an adapter hardware error.
1246          */
1247         portRspMax = pring->numRiocb;
1248         portRspPut = le32_to_cpu(pgp->rspPutInx);
1249         if (unlikely(portRspPut >= portRspMax)) {
1250                 lpfc_sli_rsp_pointers_error(phba, pring);
1251                 return;
1252         }
1253
1254         rmb();
1255         while (pring->rspidx != portRspPut) {
1256                 entry = lpfc_resp_iocb(phba, pring);
1257                 if (++pring->rspidx >= portRspMax)
1258                         pring->rspidx = 0;
1259
1260                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1261                                       (uint32_t *) &rspiocbq.iocb,
1262                                       phba->iocb_rsp_size);
1263                 irsp = &rspiocbq.iocb;
1264                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1265                 pring->stats.iocb_rsp++;
1266                 rsp_cmpl++;
1267
1268                 if (unlikely(irsp->ulpStatus)) {
1269                         /* Rsp ring <ringno> error: IOCB */
1270                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1271                                         "0326 Rsp Ring %d error: IOCB Data: "
1272                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1273                                         pring->ringno,
1274                                         irsp->un.ulpWord[0],
1275                                         irsp->un.ulpWord[1],
1276                                         irsp->un.ulpWord[2],
1277                                         irsp->un.ulpWord[3],
1278                                         irsp->un.ulpWord[4],
1279                                         irsp->un.ulpWord[5],
1280                                         *(((uint32_t *) irsp) + 6),
1281                                         *(((uint32_t *) irsp) + 7));
1282                 }
1283
1284                 switch (type) {
1285                 case LPFC_ABORT_IOCB:
1286                 case LPFC_SOL_IOCB:
1287                         /*
1288                          * Idle exchange closed via ABTS from port.  No iocb
1289                          * resources need to be recovered.
1290                          */
1291                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1292                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1293                                                 "0314 IOCB cmd 0x%x "
1294                                                 "processed. Skipping "
1295                                                 "completion",
1296                                                 irsp->ulpCommand);
1297                                 break;
1298                         }
1299
1300                         spin_lock_irqsave(&phba->hbalock, iflags);
1301                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1302                                                          &rspiocbq);
1303                         spin_unlock_irqrestore(&phba->hbalock, iflags);
1304                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1305                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1306                                                       &rspiocbq);
1307                         }
1308                         break;
1309                 default:
1310                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1311                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1312                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1313                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1314                                        MAX_MSG_DATA);
1315                                 dev_warn(&((phba->pcidev)->dev),
1316                                          "lpfc%d: %s\n",
1317                                          phba->brd_no, adaptermsg);
1318                         } else {
1319                                 /* Unknown IOCB command */
1320                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1321                                                 "0321 Unknown IOCB command "
1322                                                 "Data: x%x, x%x x%x x%x x%x\n",
1323                                                 type, irsp->ulpCommand,
1324                                                 irsp->ulpStatus,
1325                                                 irsp->ulpIoTag,
1326                                                 irsp->ulpContext);
1327                         }
1328                         break;
1329                 }
1330
1331                 /*
1332                  * The response IOCB has been processed.  Update the ring
1333                  * pointer in SLIM.  If the port response put pointer has not
1334                  * been updated, sync the pgp->rspPutInx and fetch the new port
1335                  * response put pointer.
1336                  */
1337                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1338
1339                 if (pring->rspidx == portRspPut)
1340                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1341         }
1342
1343         ha_copy = readl(phba->HAregaddr);
1344         ha_copy >>= (LPFC_FCP_RING * 4);
1345
1346         if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
1347                 spin_lock_irqsave(&phba->hbalock, iflags);
1348                 pring->stats.iocb_rsp_full++;
1349                 status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
1350                 writel(status, phba->CAregaddr);
1351                 readl(phba->CAregaddr);
1352                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1353         }
1354         if ((ha_copy & HA_R0CE_RSP) &&
1355             (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1356                 spin_lock_irqsave(&phba->hbalock, iflags);
1357                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1358                 pring->stats.iocb_cmd_empty++;
1359
1360                 /* Force update of the local copy of cmdGetInx */
1361                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1362                 lpfc_sli_resume_iocb(phba, pring);
1363
1364                 if ((pring->lpfc_sli_cmd_available))
1365                         (pring->lpfc_sli_cmd_available) (phba, pring);
1366
1367                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1368         }
1369
1370         return;
1371 }
1372
1373 /*
1374  * This routine presumes LPFC_FCP_RING handling and doesn't bother
1375  * to check it explicitly.
1376  */
1377 static int
1378 lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
1379                                 struct lpfc_sli_ring *pring, uint32_t mask)
1380 {
1381         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1382                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1383                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1384         IOCB_t *irsp = NULL;
1385         IOCB_t *entry = NULL;
1386         struct lpfc_iocbq *cmdiocbq = NULL;
1387         struct lpfc_iocbq rspiocbq;
1388         uint32_t status;
1389         uint32_t portRspPut, portRspMax;
1390         int rc = 1;
1391         lpfc_iocb_type type;
1392         unsigned long iflag;
1393         uint32_t rsp_cmpl = 0;
1394
1395         spin_lock_irqsave(&phba->hbalock, iflag);
1396         pring->stats.iocb_event++;
1397
1398         /*
1399          * The next available response entry should never exceed the maximum
1400          * entries.  If it does, treat it as an adapter hardware error.
1401          */
1402         portRspMax = pring->numRiocb;
1403         portRspPut = le32_to_cpu(pgp->rspPutInx);
1404         if (unlikely(portRspPut >= portRspMax)) {
1405                 lpfc_sli_rsp_pointers_error(phba, pring);
1406                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1407                 return 1;
1408         }
1409
1410         rmb();
1411         while (pring->rspidx != portRspPut) {
1412                 /*
1413                  * Fetch an entry off the ring and copy it into a local data
1414                  * structure.  The copy involves a byte-swap since the
1415                  * network byte order and pci byte orders are different.
1416                  */
1417                 entry = lpfc_resp_iocb(phba, pring);
1418                 phba->last_completion_time = jiffies;
1419
1420                 if (++pring->rspidx >= portRspMax)
1421                         pring->rspidx = 0;
1422
1423                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1424                                       (uint32_t *) &rspiocbq.iocb,
1425                                       phba->iocb_rsp_size);
1426                 INIT_LIST_HEAD(&(rspiocbq.list));
1427                 irsp = &rspiocbq.iocb;
1428
1429                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1430                 pring->stats.iocb_rsp++;
1431                 rsp_cmpl++;
1432
1433                 if (unlikely(irsp->ulpStatus)) {
1434                         /*
1435                          * If resource errors reported from HBA, reduce
1436                          * queuedepths of the SCSI device.
1437                          */
1438                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1439                                 (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
1440                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1441                                 lpfc_adjust_queue_depth(phba);
1442                                 spin_lock_irqsave(&phba->hbalock, iflag);
1443                         }
1444
1445                         /* Rsp ring <ringno> error: IOCB */
1446                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1447                                         "0336 Rsp Ring %d error: IOCB Data: "
1448                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1449                                         pring->ringno,
1450                                         irsp->un.ulpWord[0],
1451                                         irsp->un.ulpWord[1],
1452                                         irsp->un.ulpWord[2],
1453                                         irsp->un.ulpWord[3],
1454                                         irsp->un.ulpWord[4],
1455                                         irsp->un.ulpWord[5],
1456                                         *(((uint32_t *) irsp) + 6),
1457                                         *(((uint32_t *) irsp) + 7));
1458                 }
1459
1460                 switch (type) {
1461                 case LPFC_ABORT_IOCB:
1462                 case LPFC_SOL_IOCB:
1463                         /*
1464                          * Idle exchange closed via ABTS from port.  No iocb
1465                          * resources need to be recovered.
1466                          */
1467                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1468                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1469                                                 "0333 IOCB cmd 0x%x"
1470                                                 " processed. Skipping"
1471                                                 " completion\n",
1472                                                 irsp->ulpCommand);
1473                                 break;
1474                         }
1475
1476                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1477                                                          &rspiocbq);
1478                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1479                                 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
1480                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1481                                                               &rspiocbq);
1482                                 } else {
1483                                         spin_unlock_irqrestore(&phba->hbalock,
1484                                                                iflag);
1485                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1486                                                               &rspiocbq);
1487                                         spin_lock_irqsave(&phba->hbalock,
1488                                                           iflag);
1489                                 }
1490                         }
1491                         break;
1492                 case LPFC_UNSOL_IOCB:
1493                         spin_unlock_irqrestore(&phba->hbalock, iflag);
1494                         lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
1495                         spin_lock_irqsave(&phba->hbalock, iflag);
1496                         break;
1497                 default:
1498                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1499                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1500                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1501                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1502                                        MAX_MSG_DATA);
1503                                 dev_warn(&((phba->pcidev)->dev),
1504                                          "lpfc%d: %s\n",
1505                                          phba->brd_no, adaptermsg);
1506                         } else {
1507                                 /* Unknown IOCB command */
1508                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1509                                                 "0334 Unknown IOCB command "
1510                                                 "Data: x%x, x%x x%x x%x x%x\n",
1511                                                 type, irsp->ulpCommand,
1512                                                 irsp->ulpStatus,
1513                                                 irsp->ulpIoTag,
1514                                                 irsp->ulpContext);
1515                         }
1516                         break;
1517                 }
1518
1519                 /*
1520                  * The response IOCB has been processed.  Update the ring
1521                  * pointer in SLIM.  If the port response put pointer has not
1522                  * been updated, sync the pgp->rspPutInx and fetch the new port
1523                  * response put pointer.
1524                  */
1525                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1526
1527                 if (pring->rspidx == portRspPut)
1528                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1529         }
1530
1531         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1532                 pring->stats.iocb_rsp_full++;
1533                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1534                 writel(status, phba->CAregaddr);
1535                 readl(phba->CAregaddr);
1536         }
1537         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1538                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1539                 pring->stats.iocb_cmd_empty++;
1540
1541                 /* Force update of the local copy of cmdGetInx */
1542                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1543                 lpfc_sli_resume_iocb(phba, pring);
1544
1545                 if ((pring->lpfc_sli_cmd_available))
1546                         (pring->lpfc_sli_cmd_available) (phba, pring);
1547
1548         }
1549
1550         spin_unlock_irqrestore(&phba->hbalock, iflag);
1551         return rc;
1552 }
1553
1554 int
1555 lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
1556                                 struct lpfc_sli_ring *pring, uint32_t mask)
1557 {
1558         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1559                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1560                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1561         IOCB_t *entry;
1562         IOCB_t *irsp = NULL;
1563         struct lpfc_iocbq *rspiocbp = NULL;
1564         struct lpfc_iocbq *next_iocb;
1565         struct lpfc_iocbq *cmdiocbp;
1566         struct lpfc_iocbq *saveq;
1567         uint8_t iocb_cmd_type;
1568         lpfc_iocb_type type;
1569         uint32_t status, free_saveq;
1570         uint32_t portRspPut, portRspMax;
1571         int rc = 1;
1572         unsigned long iflag;
1573
1574         spin_lock_irqsave(&phba->hbalock, iflag);
1575         pring->stats.iocb_event++;
1576
1577         /*
1578          * The next available response entry should never exceed the maximum
1579          * entries.  If it does, treat it as an adapter hardware error.
1580          */
1581         portRspMax = pring->numRiocb;
1582         portRspPut = le32_to_cpu(pgp->rspPutInx);
1583         if (portRspPut >= portRspMax) {
1584                 /*
1585                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1586                  * rsp ring <portRspMax>
1587                  */
1588                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1589                                 "0303 Ring %d handler: portRspPut %d "
1590                                 "is bigger then rsp ring %d\n",
1591                                 pring->ringno, portRspPut, portRspMax);
1592
1593                 phba->link_state = LPFC_HBA_ERROR;
1594                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1595
1596                 phba->work_hs = HS_FFER3;
1597                 lpfc_handle_eratt(phba);
1598
1599                 return 1;
1600         }
1601
1602         rmb();
1603         while (pring->rspidx != portRspPut) {
1604                 /*
1605                  * Build a completion list and call the appropriate handler.
1606                  * The process is to get the next available response iocb, get
1607                  * a free iocb from the list, copy the response data into the
1608                  * free iocb, insert to the continuation list, and update the
1609                  * next response index to slim.  This process makes response
1610                  * iocb's in the ring available to DMA as fast as possible but
1611                  * pays a penalty for a copy operation.  Since the iocb is
1612                  * only 32 bytes, this penalty is considered small relative to
1613                  * the PCI reads for register values and a slim write.  When
1614                  * the ulpLe field is set, the entire Command has been
1615                  * received.
1616                  */
1617                 entry = lpfc_resp_iocb(phba, pring);
1618
1619                 phba->last_completion_time = jiffies;
1620                 rspiocbp = __lpfc_sli_get_iocbq(phba);
1621                 if (rspiocbp == NULL) {
1622                         printk(KERN_ERR "%s: out of buffers! Failing "
1623                                "completion.\n", __FUNCTION__);
1624                         break;
1625                 }
1626
1627                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb,
1628                                       phba->iocb_rsp_size);
1629                 irsp = &rspiocbp->iocb;
1630
1631                 if (++pring->rspidx >= portRspMax)
1632                         pring->rspidx = 0;
1633
1634                 if (pring->ringno == LPFC_ELS_RING) {
1635                         lpfc_debugfs_slow_ring_trc(phba,
1636                         "IOCB rsp ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
1637                                 *(((uint32_t *) irsp) + 4),
1638                                 *(((uint32_t *) irsp) + 6),
1639                                 *(((uint32_t *) irsp) + 7));
1640                 }
1641
1642                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1643
1644                 if (list_empty(&(pring->iocb_continueq))) {
1645                         list_add(&rspiocbp->list, &(pring->iocb_continueq));
1646                 } else {
1647                         list_add_tail(&rspiocbp->list,
1648                                       &(pring->iocb_continueq));
1649                 }
1650
1651                 pring->iocb_continueq_cnt++;
1652                 if (irsp->ulpLe) {
1653                         /*
1654                          * By default, the driver expects to free all resources
1655                          * associated with this iocb completion.
1656                          */
1657                         free_saveq = 1;
1658                         saveq = list_get_first(&pring->iocb_continueq,
1659                                                struct lpfc_iocbq, list);
1660                         irsp = &(saveq->iocb);
1661                         list_del_init(&pring->iocb_continueq);
1662                         pring->iocb_continueq_cnt = 0;
1663
1664                         pring->stats.iocb_rsp++;
1665
1666                         /*
1667                          * If resource errors reported from HBA, reduce
1668                          * queuedepths of the SCSI device.
1669                          */
1670                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1671                              (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
1672                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1673                                 lpfc_adjust_queue_depth(phba);
1674                                 spin_lock_irqsave(&phba->hbalock, iflag);
1675                         }
1676
1677                         if (irsp->ulpStatus) {
1678                                 /* Rsp ring <ringno> error: IOCB */
1679                                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1680                                                 "0328 Rsp Ring %d error: "
1681                                                 "IOCB Data: "
1682                                                 "x%x x%x x%x x%x "
1683                                                 "x%x x%x x%x x%x "
1684                                                 "x%x x%x x%x x%x "
1685                                                 "x%x x%x x%x x%x\n",
1686                                                 pring->ringno,
1687                                                 irsp->un.ulpWord[0],
1688                                                 irsp->un.ulpWord[1],
1689                                                 irsp->un.ulpWord[2],
1690                                                 irsp->un.ulpWord[3],
1691                                                 irsp->un.ulpWord[4],
1692                                                 irsp->un.ulpWord[5],
1693                                                 *(((uint32_t *) irsp) + 6),
1694                                                 *(((uint32_t *) irsp) + 7),
1695                                                 *(((uint32_t *) irsp) + 8),
1696                                                 *(((uint32_t *) irsp) + 9),
1697                                                 *(((uint32_t *) irsp) + 10),
1698                                                 *(((uint32_t *) irsp) + 11),
1699                                                 *(((uint32_t *) irsp) + 12),
1700                                                 *(((uint32_t *) irsp) + 13),
1701                                                 *(((uint32_t *) irsp) + 14),
1702                                                 *(((uint32_t *) irsp) + 15));
1703                         }
1704
1705                         /*
1706                          * Fetch the IOCB command type and call the correct
1707                          * completion routine.  Solicited and Unsolicited
1708                          * IOCBs on the ELS ring get freed back to the
1709                          * lpfc_iocb_list by the discovery kernel thread.
1710                          */
1711                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1712                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1713                         if (type == LPFC_SOL_IOCB) {
1714                                 spin_unlock_irqrestore(&phba->hbalock,
1715                                                        iflag);
1716                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1717                                                                saveq);
1718                                 spin_lock_irqsave(&phba->hbalock, iflag);
1719                         } else if (type == LPFC_UNSOL_IOCB) {
1720                                 spin_unlock_irqrestore(&phba->hbalock,
1721                                                        iflag);
1722                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1723                                                                  saveq);
1724                                 spin_lock_irqsave(&phba->hbalock, iflag);
1725                         } else if (type == LPFC_ABORT_IOCB) {
1726                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1727                                     ((cmdiocbp =
1728                                       lpfc_sli_iocbq_lookup(phba, pring,
1729                                                             saveq)))) {
1730                                         /* Call the specified completion
1731                                            routine */
1732                                         if (cmdiocbp->iocb_cmpl) {
1733                                                 spin_unlock_irqrestore(
1734                                                        &phba->hbalock,
1735                                                        iflag);
1736                                                 (cmdiocbp->iocb_cmpl) (phba,
1737                                                              cmdiocbp, saveq);
1738                                                 spin_lock_irqsave(
1739                                                           &phba->hbalock,
1740                                                           iflag);
1741                                         } else
1742                                                 __lpfc_sli_release_iocbq(phba,
1743                                                                       cmdiocbp);
1744                                 }
1745                         } else if (type == LPFC_UNKNOWN_IOCB) {
1746                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1747
1748                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1749
1750                                         memset(adaptermsg, 0,
1751                                                LPFC_MAX_ADPTMSG);
1752                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1753                                                MAX_MSG_DATA);
1754                                         dev_warn(&((phba->pcidev)->dev),
1755                                                  "lpfc%d: %s\n",
1756                                                  phba->brd_no, adaptermsg);
1757                                 } else {
1758                                         /* Unknown IOCB command */
1759                                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1760                                                         "0335 Unknown IOCB "
1761                                                         "command Data: x%x "
1762                                                         "x%x x%x x%x\n",
1763                                                         irsp->ulpCommand,
1764                                                         irsp->ulpStatus,
1765                                                         irsp->ulpIoTag,
1766                                                         irsp->ulpContext);
1767                                 }
1768                         }
1769
1770                         if (free_saveq) {
1771                                 list_for_each_entry_safe(rspiocbp, next_iocb,
1772                                                          &saveq->list, list) {
1773                                         list_del(&rspiocbp->list);
1774                                         __lpfc_sli_release_iocbq(phba,
1775                                                                  rspiocbp);
1776                                 }
1777                                 __lpfc_sli_release_iocbq(phba, saveq);
1778                         }
1779                         rspiocbp = NULL;
1780                 }
1781
1782                 /*
1783                  * If the port response put pointer has not been updated, sync
1784                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1785                  * response put pointer.
1786                  */
1787                 if (pring->rspidx == portRspPut) {
1788                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1789                 }
1790         } /* while (pring->rspidx != portRspPut) */
1791
1792         if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) {
1793                 /* At least one response entry has been freed */
1794                 pring->stats.iocb_rsp_full++;
1795                 /* SET RxRE_RSP in Chip Att register */
1796                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1797                 writel(status, phba->CAregaddr);
1798                 readl(phba->CAregaddr); /* flush */
1799         }
1800         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1801                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1802                 pring->stats.iocb_cmd_empty++;
1803
1804                 /* Force update of the local copy of cmdGetInx */
1805                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1806                 lpfc_sli_resume_iocb(phba, pring);
1807
1808                 if ((pring->lpfc_sli_cmd_available))
1809                         (pring->lpfc_sli_cmd_available) (phba, pring);
1810
1811         }
1812
1813         spin_unlock_irqrestore(&phba->hbalock, iflag);
1814         return rc;
1815 }
1816
1817 void
1818 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1819 {
1820         LIST_HEAD(completions);
1821         struct lpfc_iocbq *iocb, *next_iocb;
1822         IOCB_t *cmd = NULL;
1823
1824         if (pring->ringno == LPFC_ELS_RING) {
1825                 lpfc_fabric_abort_hba(phba);
1826         }
1827
1828         /* Error everything on txq and txcmplq
1829          * First do the txq.
1830          */
1831         spin_lock_irq(&phba->hbalock);
1832         list_splice_init(&pring->txq, &completions);
1833         pring->txq_cnt = 0;
1834
1835         /* Next issue ABTS for everything on the txcmplq */
1836         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list)
1837                 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
1838
1839         spin_unlock_irq(&phba->hbalock);
1840
1841         while (!list_empty(&completions)) {
1842                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1843                 cmd = &iocb->iocb;
1844                 list_del_init(&iocb->list);
1845
1846                 if (!iocb->iocb_cmpl)
1847                         lpfc_sli_release_iocbq(phba, iocb);
1848                 else {
1849                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1850                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1851                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1852                 }
1853         }
1854 }
1855
1856 int
1857 lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
1858 {
1859         uint32_t status;
1860         int i = 0;
1861         int retval = 0;
1862
1863         /* Read the HBA Host Status Register */
1864         status = readl(phba->HSregaddr);
1865
1866         /*
1867          * Check status register every 100ms for 5 retries, then every
1868          * 500ms for 5, then every 2.5 sec for 5, then reset board and
1869          * every 2.5 sec for 4.
1870          * Break our of the loop if errors occurred during init.
1871          */
1872         while (((status & mask) != mask) &&
1873                !(status & HS_FFERM) &&
1874                i++ < 20) {
1875
1876                 if (i <= 5)
1877                         msleep(10);
1878                 else if (i <= 10)
1879                         msleep(500);
1880                 else
1881                         msleep(2500);
1882
1883                 if (i == 15) {
1884                                 /* Do post */
1885                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1886                         lpfc_sli_brdrestart(phba);
1887                 }
1888                 /* Read the HBA Host Status Register */
1889                 status = readl(phba->HSregaddr);
1890         }
1891
1892         /* Check to see if any errors occurred during init */
1893         if ((status & HS_FFERM) || (i >= 20)) {
1894                 phba->link_state = LPFC_HBA_ERROR;
1895                 retval = 1;
1896         }
1897
1898         return retval;
1899 }
1900
1901 #define BARRIER_TEST_PATTERN (0xdeadbeef)
1902
1903 void lpfc_reset_barrier(struct lpfc_hba *phba)
1904 {
1905         uint32_t __iomem *resp_buf;
1906         uint32_t __iomem *mbox_buf;
1907         volatile uint32_t mbox;
1908         uint32_t hc_copy;
1909         int  i;
1910         uint8_t hdrtype;
1911
1912         pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
1913         if (hdrtype != 0x80 ||
1914             (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
1915              FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
1916                 return;
1917
1918         /*
1919          * Tell the other part of the chip to suspend temporarily all
1920          * its DMA activity.
1921          */
1922         resp_buf = phba->MBslimaddr;
1923
1924         /* Disable the error attention */
1925         hc_copy = readl(phba->HCregaddr);
1926         writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
1927         readl(phba->HCregaddr); /* flush */
1928         phba->link_flag |= LS_IGNORE_ERATT;
1929
1930         if (readl(phba->HAregaddr) & HA_ERATT) {
1931                 /* Clear Chip error bit */
1932                 writel(HA_ERATT, phba->HAregaddr);
1933                 phba->pport->stopped = 1;
1934         }
1935
1936         mbox = 0;
1937         ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD;
1938         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP;
1939
1940         writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
1941         mbox_buf = phba->MBslimaddr;
1942         writel(mbox, mbox_buf);
1943
1944         for (i = 0;
1945              readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++)
1946                 mdelay(1);
1947
1948         if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) {
1949                 if (phba->sli.sli_flag & LPFC_SLI2_ACTIVE ||
1950                     phba->pport->stopped)
1951                         goto restore_hc;
1952                 else
1953                         goto clear_errat;
1954         }
1955
1956         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST;
1957         for (i = 0; readl(resp_buf) != mbox &&  i < 500; i++)
1958                 mdelay(1);
1959
1960 clear_errat:
1961
1962         while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500)
1963                 mdelay(1);
1964
1965         if (readl(phba->HAregaddr) & HA_ERATT) {
1966                 writel(HA_ERATT, phba->HAregaddr);
1967                 phba->pport->stopped = 1;
1968         }
1969
1970 restore_hc:
1971         phba->link_flag &= ~LS_IGNORE_ERATT;
1972         writel(hc_copy, phba->HCregaddr);
1973         readl(phba->HCregaddr); /* flush */
1974 }
1975
1976 int
1977 lpfc_sli_brdkill(struct lpfc_hba *phba)
1978 {
1979         struct lpfc_sli *psli;
1980         LPFC_MBOXQ_t *pmb;
1981         uint32_t status;
1982         uint32_t ha_copy;
1983         int retval;
1984         int i = 0;
1985
1986         psli = &phba->sli;
1987
1988         /* Kill HBA */
1989         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1990                         "0329 Kill HBA Data: x%x x%x\n",
1991                         phba->pport->port_state, psli->sli_flag);
1992
1993         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1994         if (!pmb)
1995                 return 1;
1996
1997         /* Disable the error attention */
1998         spin_lock_irq(&phba->hbalock);
1999         status = readl(phba->HCregaddr);
2000         status &= ~HC_ERINT_ENA;
2001         writel(status, phba->HCregaddr);
2002         readl(phba->HCregaddr); /* flush */
2003         phba->link_flag |= LS_IGNORE_ERATT;
2004         spin_unlock_irq(&phba->hbalock);
2005
2006         lpfc_kill_board(phba, pmb);
2007         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2008         retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
2009
2010         if (retval != MBX_SUCCESS) {
2011                 if (retval != MBX_BUSY)
2012                         mempool_free(pmb, phba->mbox_mem_pool);
2013                 spin_lock_irq(&phba->hbalock);
2014                 phba->link_flag &= ~LS_IGNORE_ERATT;
2015                 spin_unlock_irq(&phba->hbalock);
2016                 return 1;
2017         }
2018
2019         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
2020
2021         mempool_free(pmb, phba->mbox_mem_pool);
2022
2023         /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
2024          * attention every 100ms for 3 seconds. If we don't get ERATT after
2025          * 3 seconds we still set HBA_ERROR state because the status of the
2026          * board is now undefined.
2027          */
2028         ha_copy = readl(phba->HAregaddr);
2029
2030         while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
2031                 mdelay(100);
2032                 ha_copy = readl(phba->HAregaddr);
2033         }
2034
2035         del_timer_sync(&psli->mbox_tmo);
2036         if (ha_copy & HA_ERATT) {
2037                 writel(HA_ERATT, phba->HAregaddr);
2038                 phba->pport->stopped = 1;
2039         }
2040         spin_lock_irq(&phba->hbalock);
2041         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2042         phba->link_flag &= ~LS_IGNORE_ERATT;
2043         spin_unlock_irq(&phba->hbalock);
2044
2045         psli->mbox_active = NULL;
2046         lpfc_hba_down_post(phba);
2047         phba->link_state = LPFC_HBA_ERROR;
2048
2049         return ha_copy & HA_ERATT ? 0 : 1;
2050 }
2051
2052 int
2053 lpfc_sli_brdreset(struct lpfc_hba *phba)
2054 {
2055         struct lpfc_sli *psli;
2056         struct lpfc_sli_ring *pring;
2057         uint16_t cfg_value;
2058         int i;
2059
2060         psli = &phba->sli;
2061
2062         /* Reset HBA */
2063         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2064                         "0325 Reset HBA Data: x%x x%x\n",
2065                         phba->pport->port_state, psli->sli_flag);
2066
2067         /* perform board reset */
2068         phba->fc_eventTag = 0;
2069         phba->pport->fc_myDID = 0;
2070         phba->pport->fc_prevDID = 0;
2071
2072         /* Turn off parity checking and serr during the physical reset */
2073         pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
2074         pci_write_config_word(phba->pcidev, PCI_COMMAND,
2075                               (cfg_value &
2076                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
2077
2078         psli->sli_flag &= ~(LPFC_SLI2_ACTIVE | LPFC_PROCESS_LA);
2079         /* Now toggle INITFF bit in the Host Control Register */
2080         writel(HC_INITFF, phba->HCregaddr);
2081         mdelay(1);
2082         readl(phba->HCregaddr); /* flush */
2083         writel(0, phba->HCregaddr);
2084         readl(phba->HCregaddr); /* flush */
2085
2086         /* Restore PCI cmd register */
2087         pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
2088
2089         /* Initialize relevant SLI info */
2090         for (i = 0; i < psli->num_rings; i++) {
2091                 pring = &psli->ring[i];
2092                 pring->flag = 0;
2093                 pring->rspidx = 0;
2094                 pring->next_cmdidx  = 0;
2095                 pring->local_getidx = 0;
2096                 pring->cmdidx = 0;
2097                 pring->missbufcnt = 0;
2098         }
2099
2100         phba->link_state = LPFC_WARM_START;
2101         return 0;
2102 }
2103
2104 int
2105 lpfc_sli_brdrestart(struct lpfc_hba *phba)
2106 {
2107         MAILBOX_t *mb;
2108         struct lpfc_sli *psli;
2109         uint16_t skip_post;
2110         volatile uint32_t word0;
2111         void __iomem *to_slim;
2112
2113         spin_lock_irq(&phba->hbalock);
2114
2115         psli = &phba->sli;
2116
2117         /* Restart HBA */
2118         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2119                         "0337 Restart HBA Data: x%x x%x\n",
2120                         phba->pport->port_state, psli->sli_flag);
2121
2122         word0 = 0;
2123         mb = (MAILBOX_t *) &word0;
2124         mb->mbxCommand = MBX_RESTART;
2125         mb->mbxHc = 1;
2126
2127         lpfc_reset_barrier(phba);
2128
2129         to_slim = phba->MBslimaddr;
2130         writel(*(uint32_t *) mb, to_slim);
2131         readl(to_slim); /* flush */
2132
2133         /* Only skip post after fc_ffinit is completed */
2134         if (phba->pport->port_state) {
2135                 skip_post = 1;
2136                 word0 = 1;      /* This is really setting up word1 */
2137         } else {
2138                 skip_post = 0;
2139                 word0 = 0;      /* This is really setting up word1 */
2140         }
2141         to_slim = phba->MBslimaddr + sizeof (uint32_t);
2142         writel(*(uint32_t *) mb, to_slim);
2143         readl(to_slim); /* flush */
2144
2145         lpfc_sli_brdreset(phba);
2146         phba->pport->stopped = 0;
2147         phba->link_state = LPFC_INIT_START;
2148
2149         spin_unlock_irq(&phba->hbalock);
2150
2151         memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
2152         psli->stats_start = get_seconds();
2153
2154         if (skip_post)
2155                 mdelay(100);
2156         else
2157                 mdelay(2000);
2158
2159         lpfc_hba_down_post(phba);
2160
2161         return 0;
2162 }
2163
2164 static int
2165 lpfc_sli_chipset_init(struct lpfc_hba *phba)
2166 {
2167         uint32_t status, i = 0;
2168
2169         /* Read the HBA Host Status Register */
2170         status = readl(phba->HSregaddr);
2171
2172         /* Check status register to see what current state is */
2173         i = 0;
2174         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
2175
2176                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
2177                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
2178                  * 4.
2179                  */
2180                 if (i++ >= 20) {
2181                         /* Adapter failed to init, timeout, status reg
2182                            <status> */
2183                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2184                                         "0436 Adapter failed to init, "
2185                                         "timeout, status reg x%x\n", status);
2186                         phba->link_state = LPFC_HBA_ERROR;
2187                         return -ETIMEDOUT;
2188                 }
2189
2190                 /* Check to see if any errors occurred during init */
2191                 if (status & HS_FFERM) {
2192                         /* ERROR: During chipset initialization */
2193                         /* Adapter failed to init, chipset, status reg
2194                            <status> */
2195                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2196                                         "0437 Adapter failed to init, "
2197                                         "chipset, status reg x%x\n", status);
2198                         phba->link_state = LPFC_HBA_ERROR;
2199                         return -EIO;
2200                 }
2201
2202                 if (i <= 5) {
2203                         msleep(10);
2204                 } else if (i <= 10) {
2205                         msleep(500);
2206                 } else {
2207                         msleep(2500);
2208                 }
2209
2210                 if (i == 15) {
2211                                 /* Do post */
2212                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2213                         lpfc_sli_brdrestart(phba);
2214                 }
2215                 /* Read the HBA Host Status Register */
2216                 status = readl(phba->HSregaddr);
2217         }
2218
2219         /* Check to see if any errors occurred during init */
2220         if (status & HS_FFERM) {
2221                 /* ERROR: During chipset initialization */
2222                 /* Adapter failed to init, chipset, status reg <status> */
2223                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2224                                 "0438 Adapter failed to init, chipset, "
2225                                 "status reg x%x\n", status);
2226                 phba->link_state = LPFC_HBA_ERROR;
2227                 return -EIO;
2228         }
2229
2230         /* Clear all interrupt enable conditions */
2231         writel(0, phba->HCregaddr);
2232         readl(phba->HCregaddr); /* flush */
2233
2234         /* setup host attn register */
2235         writel(0xffffffff, phba->HAregaddr);
2236         readl(phba->HAregaddr); /* flush */
2237         return 0;
2238 }
2239
2240 int
2241 lpfc_sli_hbq_count(void)
2242 {
2243         return ARRAY_SIZE(lpfc_hbq_defs);
2244 }
2245
2246 static int
2247 lpfc_sli_hbq_entry_count(void)
2248 {
2249         int  hbq_count = lpfc_sli_hbq_count();
2250         int  count = 0;
2251         int  i;
2252
2253         for (i = 0; i < hbq_count; ++i)
2254                 count += lpfc_hbq_defs[i]->entry_count;
2255         return count;
2256 }
2257
2258 int
2259 lpfc_sli_hbq_size(void)
2260 {
2261         return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry);
2262 }
2263
2264 static int
2265 lpfc_sli_hbq_setup(struct lpfc_hba *phba)
2266 {
2267         int  hbq_count = lpfc_sli_hbq_count();
2268         LPFC_MBOXQ_t *pmb;
2269         MAILBOX_t *pmbox;
2270         uint32_t hbqno;
2271         uint32_t hbq_entry_index;
2272
2273                                 /* Get a Mailbox buffer to setup mailbox
2274                                  * commands for HBA initialization
2275                                  */
2276         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2277
2278         if (!pmb)
2279                 return -ENOMEM;
2280
2281         pmbox = &pmb->mb;
2282
2283         /* Initialize the struct lpfc_sli_hbq structure for each hbq */
2284         phba->link_state = LPFC_INIT_MBX_CMDS;
2285
2286         hbq_entry_index = 0;
2287         for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
2288                 phba->hbqs[hbqno].next_hbqPutIdx = 0;
2289                 phba->hbqs[hbqno].hbqPutIdx      = 0;
2290                 phba->hbqs[hbqno].local_hbqGetIdx   = 0;
2291                 phba->hbqs[hbqno].entry_count =
2292                         lpfc_hbq_defs[hbqno]->entry_count;
2293                 lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno],
2294                         hbq_entry_index, pmb);
2295                 hbq_entry_index += phba->hbqs[hbqno].entry_count;
2296
2297                 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
2298                         /* Adapter failed to init, mbxCmd <cmd> CFG_RING,
2299                            mbxStatus <status>, ring <num> */
2300
2301                         lpfc_printf_log(phba, KERN_ERR,
2302                                         LOG_SLI | LOG_VPORT,
2303                                         "1805 Adapter failed to init. "
2304                                         "Data: x%x x%x x%x\n",
2305                                         pmbox->mbxCommand,
2306                                         pmbox->mbxStatus, hbqno);
2307
2308                         phba->link_state = LPFC_HBA_ERROR;
2309                         mempool_free(pmb, phba->mbox_mem_pool);
2310                         return ENXIO;
2311                 }
2312         }
2313         phba->hbq_count = hbq_count;
2314
2315         mempool_free(pmb, phba->mbox_mem_pool);
2316
2317         /* Initially populate or replenish the HBQs */
2318         for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
2319                 if (lpfc_sli_hbqbuf_init_hbqs(phba, hbqno))
2320                         return -ENOMEM;
2321         }
2322         return 0;
2323 }
2324
2325 static int
2326 lpfc_do_config_port(struct lpfc_hba *phba, int sli_mode)
2327 {
2328         LPFC_MBOXQ_t *pmb;
2329         uint32_t resetcount = 0, rc = 0, done = 0;
2330
2331         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2332         if (!pmb) {
2333                 phba->link_state = LPFC_HBA_ERROR;
2334                 return -ENOMEM;
2335         }
2336
2337         phba->sli_rev = sli_mode;
2338         while (resetcount < 2 && !done) {
2339                 spin_lock_irq(&phba->hbalock);
2340                 phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2341                 spin_unlock_irq(&phba->hbalock);
2342                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2343                 lpfc_sli_brdrestart(phba);
2344                 msleep(2500);
2345                 rc = lpfc_sli_chipset_init(phba);
2346                 if (rc)
2347                         break;
2348
2349                 spin_lock_irq(&phba->hbalock);
2350                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2351                 spin_unlock_irq(&phba->hbalock);
2352                 resetcount++;
2353
2354                 /* Call pre CONFIG_PORT mailbox command initialization.  A
2355                  * value of 0 means the call was successful.  Any other
2356                  * nonzero value is a failure, but if ERESTART is returned,
2357                  * the driver may reset the HBA and try again.
2358                  */
2359                 rc = lpfc_config_port_prep(phba);
2360                 if (rc == -ERESTART) {
2361                         phba->link_state = LPFC_LINK_UNKNOWN;
2362                         continue;
2363                 } else if (rc) {
2364                         break;
2365                 }
2366
2367                 phba->link_state = LPFC_INIT_MBX_CMDS;
2368                 lpfc_config_port(phba, pmb);
2369                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
2370                 if (rc != MBX_SUCCESS) {
2371                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2372                                 "0442 Adapter failed to init, mbxCmd x%x "
2373                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
2374                                 pmb->mb.mbxCommand, pmb->mb.mbxStatus, 0);
2375                         spin_lock_irq(&phba->hbalock);
2376                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
2377                         spin_unlock_irq(&phba->hbalock);
2378                         rc = -ENXIO;
2379                 } else {
2380                         done = 1;
2381                         phba->max_vpi = (phba->max_vpi &&
2382                                          pmb->mb.un.varCfgPort.gmv) != 0
2383                                 ? pmb->mb.un.varCfgPort.max_vpi
2384                                 : 0;
2385                 }
2386         }
2387
2388         if (!done) {
2389                 rc = -EINVAL;
2390                 goto do_prep_failed;
2391         }
2392
2393         if ((pmb->mb.un.varCfgPort.sli_mode == 3) &&
2394                 (!pmb->mb.un.varCfgPort.cMA)) {
2395                 rc = -ENXIO;
2396                 goto do_prep_failed;
2397         }
2398         return rc;
2399
2400 do_prep_failed:
2401         mempool_free(pmb, phba->mbox_mem_pool);
2402         return rc;
2403 }
2404
2405 int
2406 lpfc_sli_hba_setup(struct lpfc_hba *phba)
2407 {
2408         uint32_t rc;
2409         int  mode = 3;
2410
2411         switch (lpfc_sli_mode) {
2412         case 2:
2413                 if (phba->cfg_enable_npiv) {
2414                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2415                                 "1824 NPIV enabled: Override lpfc_sli_mode "
2416                                 "parameter (%d) to auto (0).\n",
2417                                 lpfc_sli_mode);
2418                         break;
2419                 }
2420                 mode = 2;
2421                 break;
2422         case 0:
2423         case 3:
2424                 break;
2425         default:
2426                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2427                                 "1819 Unrecognized lpfc_sli_mode "
2428                                 "parameter: %d.\n", lpfc_sli_mode);
2429
2430                 break;
2431         }
2432
2433         rc = lpfc_do_config_port(phba, mode);
2434         if (rc && lpfc_sli_mode == 3)
2435                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2436                                 "1820 Unable to select SLI-3.  "
2437                                 "Not supported by adapter.\n");
2438         if (rc && mode != 2)
2439                 rc = lpfc_do_config_port(phba, 2);
2440         if (rc)
2441                 goto lpfc_sli_hba_setup_error;
2442
2443         if (phba->sli_rev == 3) {
2444                 phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE;
2445                 phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE;
2446                 phba->sli3_options |= LPFC_SLI3_ENABLED;
2447                 phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
2448
2449         } else {
2450                 phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE;
2451                 phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE;
2452                 phba->sli3_options = 0;
2453         }
2454
2455         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2456                         "0444 Firmware in SLI %x mode. Max_vpi %d\n",
2457                         phba->sli_rev, phba->max_vpi);
2458         rc = lpfc_sli_ring_map(phba);
2459
2460         if (rc)
2461                 goto lpfc_sli_hba_setup_error;
2462
2463                                 /* Init HBQs */
2464
2465         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
2466                 rc = lpfc_sli_hbq_setup(phba);
2467                 if (rc)
2468                         goto lpfc_sli_hba_setup_error;
2469         }
2470
2471         phba->sli.sli_flag |= LPFC_PROCESS_LA;
2472
2473         rc = lpfc_config_port_post(phba);
2474         if (rc)
2475                 goto lpfc_sli_hba_setup_error;
2476
2477         return rc;
2478
2479 lpfc_sli_hba_setup_error:
2480         phba->link_state = LPFC_HBA_ERROR;
2481         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2482                         "0445 Firmware initialization failed\n");
2483         return rc;
2484 }
2485
2486 /*! lpfc_mbox_timeout
2487  *
2488  * \pre
2489  * \post
2490  * \param hba Pointer to per struct lpfc_hba structure
2491  * \param l1  Pointer to the driver's mailbox queue.
2492  * \return
2493  *   void
2494  *
2495  * \b Description:
2496  *
2497  * This routine handles mailbox timeout events at timer interrupt context.
2498  */
2499 void
2500 lpfc_mbox_timeout(unsigned long ptr)
2501 {
2502         struct lpfc_hba  *phba = (struct lpfc_hba *) ptr;
2503         unsigned long iflag;
2504         uint32_t tmo_posted;
2505
2506         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
2507         tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO;
2508         if (!tmo_posted)
2509                 phba->pport->work_port_events |= WORKER_MBOX_TMO;
2510         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
2511
2512         if (!tmo_posted) {
2513                 spin_lock_irqsave(&phba->hbalock, iflag);
2514                 if (phba->work_wait)
2515                         lpfc_worker_wake_up(phba);
2516                 spin_unlock_irqrestore(&phba->hbalock, iflag);
2517         }
2518 }
2519
2520 void
2521 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
2522 {
2523         LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
2524         MAILBOX_t *mb = &pmbox->mb;
2525         struct lpfc_sli *psli = &phba->sli;
2526         struct lpfc_sli_ring *pring;
2527
2528         if (!(phba->pport->work_port_events & WORKER_MBOX_TMO)) {
2529                 return;
2530         }
2531
2532         /* Mbox cmd <mbxCommand> timeout */
2533         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2534                         "0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
2535                         mb->mbxCommand,
2536                         phba->pport->port_state,
2537                         phba->sli.sli_flag,
2538                         phba->sli.mbox_active);
2539
2540         /* Setting state unknown so lpfc_sli_abort_iocb_ring
2541          * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing
2542          * it to fail all oustanding SCSI IO.
2543          */
2544         spin_lock_irq(&phba->pport->work_port_lock);
2545         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
2546         spin_unlock_irq(&phba->pport->work_port_lock);
2547         spin_lock_irq(&phba->hbalock);
2548         phba->link_state = LPFC_LINK_UNKNOWN;
2549         phba->pport->fc_flag |= FC_ESTABLISH_LINK;
2550         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
2551         spin_unlock_irq(&phba->hbalock);
2552
2553         pring = &psli->ring[psli->fcp_ring];
2554         lpfc_sli_abort_iocb_ring(phba, pring);
2555
2556         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2557                         "0345 Resetting board due to mailbox timeout\n");
2558         /*
2559          * lpfc_offline calls lpfc_sli_hba_down which will clean up
2560          * on oustanding mailbox commands.
2561          */
2562         lpfc_offline_prep(phba);
2563         lpfc_offline(phba);
2564         lpfc_sli_brdrestart(phba);
2565         if (lpfc_online(phba) == 0)             /* Initialize the HBA */
2566                 mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
2567         lpfc_unblock_mgmt_io(phba);
2568         return;
2569 }
2570
2571 int
2572 lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
2573 {
2574         MAILBOX_t *mb;
2575         struct lpfc_sli *psli = &phba->sli;
2576         uint32_t status, evtctr;
2577         uint32_t ha_copy;
2578         int i;
2579         unsigned long drvr_flag = 0;
2580         volatile uint32_t word0, ldata;
2581         void __iomem *to_slim;
2582
2583         if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
2584                 pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
2585                 if(!pmbox->vport) {
2586                         lpfc_printf_log(phba, KERN_ERR,
2587                                         LOG_MBOX | LOG_VPORT,
2588                                         "1806 Mbox x%x failed. No vport\n",
2589                                         pmbox->mb.mbxCommand);
2590                         dump_stack();
2591                         return MBXERR_ERROR;
2592                 }
2593         }
2594
2595
2596         /* If the PCI channel is in offline state, do not post mbox. */
2597         if (unlikely(pci_channel_offline(phba->pcidev)))
2598                 return MBX_NOT_FINISHED;
2599
2600         spin_lock_irqsave(&phba->hbalock, drvr_flag);
2601         psli = &phba->sli;
2602
2603
2604         mb = &pmbox->mb;
2605         status = MBX_SUCCESS;
2606
2607         if (phba->link_state == LPFC_HBA_ERROR) {
2608                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2609
2610                 /* Mbox command <mbxCommand> cannot issue */
2611                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag)
2612                 return MBX_NOT_FINISHED;
2613         }
2614
2615         if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
2616             !(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
2617                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2618                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag)
2619                 return MBX_NOT_FINISHED;
2620         }
2621
2622         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
2623                 /* Polling for a mbox command when another one is already active
2624                  * is not allowed in SLI. Also, the driver must have established
2625                  * SLI2 mode to queue and process multiple mbox commands.
2626                  */
2627
2628                 if (flag & MBX_POLL) {
2629                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2630
2631                         /* Mbox command <mbxCommand> cannot issue */
2632                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2633                         return MBX_NOT_FINISHED;
2634                 }
2635
2636                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
2637                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2638                         /* Mbox command <mbxCommand> cannot issue */
2639                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2640                         return MBX_NOT_FINISHED;
2641                 }
2642
2643                 /* Another mailbox command is still being processed, queue this
2644                  * command to be processed later.
2645                  */
2646                 lpfc_mbox_put(phba, pmbox);
2647
2648                 /* Mbox cmd issue - BUSY */
2649                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
2650                                 "(%d):0308 Mbox cmd issue - BUSY Data: "
2651                                 "x%x x%x x%x x%x\n",
2652                                 pmbox->vport ? pmbox->vport->vpi : 0xffffff,
2653                                 mb->mbxCommand, phba->pport->port_state,
2654                                 psli->sli_flag, flag);
2655
2656                 psli->slistat.mbox_busy++;
2657                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2658
2659                 if (pmbox->vport) {
2660                         lpfc_debugfs_disc_trc(pmbox->vport,
2661                                 LPFC_DISC_TRC_MBOX_VPORT,
2662                                 "MBOX Bsy vport:  cmd:x%x mb:x%x x%x",
2663                                 (uint32_t)mb->mbxCommand,
2664                                 mb->un.varWords[0], mb->un.varWords[1]);
2665                 }
2666                 else {
2667                         lpfc_debugfs_disc_trc(phba->pport,
2668                                 LPFC_DISC_TRC_MBOX,
2669                                 "MBOX Bsy:        cmd:x%x mb:x%x x%x",
2670                                 (uint32_t)mb->mbxCommand,
2671                                 mb->un.varWords[0], mb->un.varWords[1]);
2672                 }
2673
2674                 return MBX_BUSY;
2675         }
2676
2677         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2678
2679         /* If we are not polling, we MUST be in SLI2 mode */
2680         if (flag != MBX_POLL) {
2681                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE) &&
2682                     (mb->mbxCommand != MBX_KILL_BOARD)) {
2683                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2684                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2685                         /* Mbox command <mbxCommand> cannot issue */
2686                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2687                         return MBX_NOT_FINISHED;
2688                 }
2689                 /* timeout active mbox command */
2690                 mod_timer(&psli->mbox_tmo, (jiffies +
2691                                (HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand))));
2692         }
2693
2694         /* Mailbox cmd <cmd> issue */
2695         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
2696                         "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x "
2697                         "x%x\n",
2698                         pmbox->vport ? pmbox->vport->vpi : 0,
2699                         mb->mbxCommand, phba->pport->port_state,
2700                         psli->sli_flag, flag);
2701
2702         if (mb->mbxCommand != MBX_HEARTBEAT) {
2703                 if (pmbox->vport) {
2704                         lpfc_debugfs_disc_trc(pmbox->vport,
2705                                 LPFC_DISC_TRC_MBOX_VPORT,
2706                                 "MBOX Send vport: cmd:x%x mb:x%x x%x",
2707                                 (uint32_t)mb->mbxCommand,
2708                                 mb->un.varWords[0], mb->un.varWords[1]);
2709                 }
2710                 else {
2711                         lpfc_debugfs_disc_trc(phba->pport,
2712                                 LPFC_DISC_TRC_MBOX,
2713                                 "MBOX Send:       cmd:x%x mb:x%x x%x",
2714                                 (uint32_t)mb->mbxCommand,
2715                                 mb->un.varWords[0], mb->un.varWords[1]);
2716                 }
2717         }
2718
2719         psli->slistat.mbox_cmd++;
2720         evtctr = psli->slistat.mbox_event;
2721
2722         /* next set own bit for the adapter and copy over command word */
2723         mb->mbxOwner = OWN_CHIP;
2724
2725         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2726                 /* First copy command data to host SLIM area */
2727                 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
2728         } else {
2729                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2730                         /* copy command data into host mbox for cmpl */
2731                         lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
2732                                               MAILBOX_CMD_SIZE);
2733                 }
2734
2735                 /* First copy mbox command data to HBA SLIM, skip past first
2736                    word */
2737                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
2738                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
2739                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
2740
2741                 /* Next copy over first word, with mbxOwner set */
2742                 ldata = *((volatile uint32_t *)mb);
2743                 to_slim = phba->MBslimaddr;
2744                 writel(ldata, to_slim);
2745                 readl(to_slim); /* flush */
2746
2747                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2748                         /* switch over to host mailbox */
2749                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
2750                 }
2751         }
2752
2753         wmb();
2754         /* interrupt board to doit right away */
2755         writel(CA_MBATT, phba->CAregaddr);
2756         readl(phba->CAregaddr); /* flush */
2757
2758         switch (flag) {
2759         case MBX_NOWAIT:
2760                 /* Don't wait for it to finish, just return */
2761                 psli->mbox_active = pmbox;
2762                 break;
2763
2764         case MBX_POLL:
2765                 psli->mbox_active = NULL;
2766                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2767                         /* First read mbox status word */
2768                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
2769                         word0 = le32_to_cpu(word0);
2770                 } else {
2771                         /* First read mbox status word */
2772                         word0 = readl(phba->MBslimaddr);
2773                 }
2774
2775                 /* Read the HBA Host Attention Register */
2776                 ha_copy = readl(phba->HAregaddr);
2777
2778                 i = lpfc_mbox_tmo_val(phba, mb->mbxCommand);
2779                 i *= 1000; /* Convert to ms */
2780
2781                 /* Wait for command to complete */
2782                 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
2783                        (!(ha_copy & HA_MBATT) &&
2784                         (phba->link_state > LPFC_WARM_START))) {
2785                         if (i-- <= 0) {
2786                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2787                                 spin_unlock_irqrestore(&phba->hbalock,
2788                                                        drvr_flag);
2789                                 return MBX_NOT_FINISHED;
2790                         }
2791
2792                         /* Check if we took a mbox interrupt while we were
2793                            polling */
2794                         if (((word0 & OWN_CHIP) != OWN_CHIP)
2795                             && (evtctr != psli->slistat.mbox_event))
2796                                 break;
2797
2798                         spin_unlock_irqrestore(&phba->hbalock,
2799                                                drvr_flag);
2800
2801                         msleep(1);
2802
2803                         spin_lock_irqsave(&phba->hbalock, drvr_flag);
2804
2805                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2806                                 /* First copy command data */
2807                                 word0 = *((volatile uint32_t *)
2808                                                 &phba->slim2p->mbx);
2809                                 word0 = le32_to_cpu(word0);
2810                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2811                                         MAILBOX_t *slimmb;
2812                                         volatile uint32_t slimword0;
2813                                         /* Check real SLIM for any errors */
2814                                         slimword0 = readl(phba->MBslimaddr);
2815                                         slimmb = (MAILBOX_t *) & slimword0;
2816                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
2817                                             && slimmb->mbxStatus) {
2818                                                 psli->sli_flag &=
2819                                                     ~LPFC_SLI2_ACTIVE;
2820                                                 word0 = slimword0;
2821                                         }
2822                                 }
2823                         } else {
2824                                 /* First copy command data */
2825                                 word0 = readl(phba->MBslimaddr);
2826                         }
2827                         /* Read the HBA Host Attention Register */
2828                         ha_copy = readl(phba->HAregaddr);
2829                 }
2830
2831                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2832                         /* copy results back to user */
2833                         lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
2834                                               MAILBOX_CMD_SIZE);
2835                 } else {
2836                         /* First copy command data */
2837                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2838                                                         MAILBOX_CMD_SIZE);
2839                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2840                                 pmbox->context2) {
2841                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
2842                                       phba->MBslimaddr + DMP_RSP_OFFSET,
2843                                                       mb->un.varDmp.word_cnt);
2844                         }
2845                 }
2846
2847                 writel(HA_MBATT, phba->HAregaddr);
2848                 readl(phba->HAregaddr); /* flush */
2849
2850                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2851                 status = mb->mbxStatus;
2852         }
2853
2854         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2855         return status;
2856 }
2857
2858 /*
2859  * Caller needs to hold lock.
2860  */
2861 static void
2862 __lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2863                     struct lpfc_iocbq *piocb)
2864 {
2865         /* Insert the caller's iocb in the txq tail for later processing. */
2866         list_add_tail(&piocb->list, &pring->txq);
2867         pring->txq_cnt++;
2868 }
2869
2870 static struct lpfc_iocbq *
2871 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2872                    struct lpfc_iocbq **piocb)
2873 {
2874         struct lpfc_iocbq * nextiocb;
2875
2876         nextiocb = lpfc_sli_ringtx_get(phba, pring);
2877         if (!nextiocb) {
2878                 nextiocb = *piocb;
2879                 *piocb = NULL;
2880         }
2881
2882         return nextiocb;
2883 }
2884
2885 /*
2886  * Lockless version of lpfc_sli_issue_iocb.
2887  */
2888 static int
2889 __lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2890                     struct lpfc_iocbq *piocb, uint32_t flag)
2891 {
2892         struct lpfc_iocbq *nextiocb;
2893         IOCB_t *iocb;
2894
2895         if (piocb->iocb_cmpl && (!piocb->vport) &&
2896            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
2897            (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
2898                 lpfc_printf_log(phba, KERN_ERR,
2899                                 LOG_SLI | LOG_VPORT,
2900                                 "1807 IOCB x%x failed. No vport\n",
2901                                 piocb->iocb.ulpCommand);
2902                 dump_stack();
2903                 return IOCB_ERROR;
2904         }
2905
2906
2907         /* If the PCI channel is in offline state, do not post iocbs. */
2908         if (unlikely(pci_channel_offline(phba->pcidev)))
2909                 return IOCB_ERROR;
2910
2911         /*
2912          * We should never get an IOCB if we are in a < LINK_DOWN state
2913          */
2914         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
2915                 return IOCB_ERROR;
2916
2917         /*
2918          * Check to see if we are blocking IOCB processing because of a
2919          * outstanding event.
2920          */
2921         if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
2922                 goto iocb_busy;
2923
2924         if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
2925                 /*
2926                  * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF
2927                  * can be issued if the link is not up.
2928                  */
2929                 switch (piocb->iocb.ulpCommand) {
2930                 case CMD_QUE_RING_BUF_CN:
2931                 case CMD_QUE_RING_BUF64_CN:
2932                         /*
2933                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2934                          * completion, iocb_cmpl MUST be 0.
2935                          */
2936                         if (piocb->iocb_cmpl)
2937                                 piocb->iocb_cmpl = NULL;
2938                         /*FALLTHROUGH*/
2939                 case CMD_CREATE_XRI_CR:
2940                 case CMD_CLOSE_XRI_CN:
2941                 case CMD_CLOSE_XRI_CX:
2942                         break;
2943                 default:
2944                         goto iocb_busy;
2945                 }
2946
2947         /*
2948          * For FCP commands, we must be in a state where we can process link
2949          * attention events.
2950          */
2951         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2952                             !(phba->sli.sli_flag & LPFC_PROCESS_LA))) {
2953                 goto iocb_busy;
2954         }
2955
2956         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2957                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2958                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2959
2960         if (iocb)
2961                 lpfc_sli_update_ring(phba, pring);
2962         else
2963                 lpfc_sli_update_full_ring(phba, pring);
2964
2965         if (!piocb)
2966                 return IOCB_SUCCESS;
2967
2968         goto out_busy;
2969
2970  iocb_busy:
2971         pring->stats.iocb_cmd_delay++;
2972
2973  out_busy:
2974
2975         if (!(flag & SLI_IOCB_RET_IOCB)) {
2976                 __lpfc_sli_ringtx_put(phba, pring, piocb);
2977                 return IOCB_SUCCESS;
2978         }
2979
2980         return IOCB_BUSY;
2981 }
2982
2983
2984 int
2985 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2986                     struct lpfc_iocbq *piocb, uint32_t flag)
2987 {
2988         unsigned long iflags;
2989         int rc;
2990
2991         spin_lock_irqsave(&phba->hbalock, iflags);
2992         rc = __lpfc_sli_issue_iocb(phba, pring, piocb, flag);
2993         spin_unlock_irqrestore(&phba->hbalock, iflags);
2994
2995         return rc;
2996 }
2997
2998 static int
2999 lpfc_extra_ring_setup( struct lpfc_hba *phba)
3000 {
3001         struct lpfc_sli *psli;
3002         struct lpfc_sli_ring *pring;
3003
3004         psli = &phba->sli;
3005
3006         /* Adjust cmd/rsp ring iocb entries more evenly */
3007
3008         /* Take some away from the FCP ring */
3009         pring = &psli->ring[psli->fcp_ring];
3010         pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3011         pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3012         pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3013         pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3014
3015         /* and give them to the extra ring */
3016         pring = &psli->ring[psli->extra_ring];
3017
3018         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3019         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3020         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3021         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3022
3023         /* Setup default profile for this ring */
3024         pring->iotag_max = 4096;
3025         pring->num_mask = 1;
3026         pring->prt[0].profile = 0;      /* Mask 0 */
3027         pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
3028         pring->prt[0].type = phba->cfg_multi_ring_type;
3029         pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
3030         return 0;
3031 }
3032
3033 static void
3034 lpfc_sli_async_event_handler(struct lpfc_hba * phba,
3035         struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
3036 {
3037         IOCB_t *icmd;
3038         uint16_t evt_code;
3039         uint16_t temp;
3040         struct temp_event temp_event_data;
3041         struct Scsi_Host *shost;
3042
3043         icmd = &iocbq->iocb;
3044         evt_code = icmd->un.asyncstat.evt_code;
3045         temp = icmd->ulpContext;
3046
3047         if ((evt_code != ASYNC_TEMP_WARN) &&
3048                 (evt_code != ASYNC_TEMP_SAFE)) {
3049                 lpfc_printf_log(phba,
3050                         KERN_ERR,
3051                         LOG_SLI,
3052                         "0346 Ring %d handler: unexpected ASYNC_STATUS"
3053                         " evt_code 0x%x\n",
3054                         pring->ringno,
3055                         icmd->un.asyncstat.evt_code);
3056                 return;
3057         }
3058         temp_event_data.data = (uint32_t)temp;
3059         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
3060         if (evt_code == ASYNC_TEMP_WARN) {
3061                 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
3062                 lpfc_printf_log(phba,
3063                                 KERN_WARNING,
3064                                 LOG_TEMP,
3065                                 "0347 Adapter is very hot, please take "
3066                                 "corrective action. temperature : %d Celsius\n",
3067                                 temp);
3068         }
3069         if (evt_code == ASYNC_TEMP_SAFE) {
3070                 temp_event_data.event_code = LPFC_NORMAL_TEMP;
3071                 lpfc_printf_log(phba,
3072                                 KERN_INFO,
3073                                 LOG_TEMP,
3074                                 "0340 Adapter temperature is OK now. "
3075                                 "temperature : %d Celsius\n",
3076                                 temp);
3077         }
3078
3079         /* Send temperature change event to applications */
3080         shost = lpfc_shost_from_vport(phba->pport);
3081         fc_host_post_vendor_event(shost, fc_get_event_number(),
3082                 sizeof(temp_event_data), (char *) &temp_event_data,
3083                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
3084
3085 }
3086
3087
3088 int
3089 lpfc_sli_setup(struct lpfc_hba *phba)
3090 {
3091         int i, totiocbsize = 0;
3092         struct lpfc_sli *psli = &phba->sli;
3093         struct lpfc_sli_ring *pring;
3094
3095         psli->num_rings = MAX_CONFIGURED_RINGS;
3096         psli->sli_flag = 0;
3097         psli->fcp_ring = LPFC_FCP_RING;
3098         psli->next_ring = LPFC_FCP_NEXT_RING;
3099         psli->extra_ring = LPFC_EXTRA_RING;
3100
3101         psli->iocbq_lookup = NULL;
3102         psli->iocbq_lookup_len = 0;
3103         psli->last_iotag = 0;
3104
3105         for (i = 0; i < psli->num_rings; i++) {
3106                 pring = &psli->ring[i];
3107                 switch (i) {
3108                 case LPFC_FCP_RING:     /* ring 0 - FCP */
3109                         /* numCiocb and numRiocb are used in config_port */
3110                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
3111                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
3112                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3113                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3114                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3115                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3116                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3117                                                         SLI3_IOCB_CMD_SIZE :
3118                                                         SLI2_IOCB_CMD_SIZE;
3119                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3120                                                         SLI3_IOCB_RSP_SIZE :
3121                                                         SLI2_IOCB_RSP_SIZE;
3122                         pring->iotag_ctr = 0;
3123                         pring->iotag_max =
3124                             (phba->cfg_hba_queue_depth * 2);
3125                         pring->fast_iotag = pring->iotag_max;
3126                         pring->num_mask = 0;
3127                         break;
3128                 case LPFC_EXTRA_RING:   /* ring 1 - EXTRA */
3129                         /* numCiocb and numRiocb are used in config_port */
3130                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
3131                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
3132                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3133                                                         SLI3_IOCB_CMD_SIZE :
3134                                                         SLI2_IOCB_CMD_SIZE;
3135                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3136                                                         SLI3_IOCB_RSP_SIZE :
3137                                                         SLI2_IOCB_RSP_SIZE;
3138                         pring->iotag_max = phba->cfg_hba_queue_depth;
3139                         pring->num_mask = 0;
3140                         break;
3141                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
3142                         /* numCiocb and numRiocb are used in config_port */
3143                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
3144                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
3145                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3146                                                         SLI3_IOCB_CMD_SIZE :
3147                                                         SLI2_IOCB_CMD_SIZE;
3148                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3149                                                         SLI3_IOCB_RSP_SIZE :
3150                                                         SLI2_IOCB_RSP_SIZE;
3151                         pring->fast_iotag = 0;
3152                         pring->iotag_ctr = 0;
3153                         pring->iotag_max = 4096;
3154                         pring->lpfc_sli_rcv_async_status =
3155                                 lpfc_sli_async_event_handler;
3156                         pring->num_mask = 4;
3157                         pring->prt[0].profile = 0;      /* Mask 0 */
3158                         pring->prt[0].rctl = FC_ELS_REQ;
3159                         pring->prt[0].type = FC_ELS_DATA;
3160                         pring->prt[0].lpfc_sli_rcv_unsol_event =
3161                             lpfc_els_unsol_event;
3162                         pring->prt[1].profile = 0;      /* Mask 1 */
3163                         pring->prt[1].rctl = FC_ELS_RSP;
3164                         pring->prt[1].type = FC_ELS_DATA;
3165                         pring->prt[1].lpfc_sli_rcv_unsol_event =
3166                             lpfc_els_unsol_event;
3167                         pring->prt[2].profile = 0;      /* Mask 2 */
3168                         /* NameServer Inquiry */
3169                         pring->prt[2].rctl = FC_UNSOL_CTL;
3170                         /* NameServer */
3171                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
3172                         pring->prt[2].lpfc_sli_rcv_unsol_event =
3173                             lpfc_ct_unsol_event;
3174                         pring->prt[3].profile = 0;      /* Mask 3 */
3175                         /* NameServer response */
3176                         pring->prt[3].rctl = FC_SOL_CTL;
3177                         /* NameServer */
3178                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
3179                         pring->prt[3].lpfc_sli_rcv_unsol_event =
3180                             lpfc_ct_unsol_event;
3181                         break;
3182                 }
3183                 totiocbsize += (pring->numCiocb * pring->sizeCiocb) +
3184                                 (pring->numRiocb * pring->sizeRiocb);
3185         }
3186         if (totiocbsize > MAX_SLIM_IOCB_SIZE) {
3187                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
3188                 printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in "
3189                        "SLI2 SLIM Data: x%x x%lx\n",
3190                        phba->brd_no, totiocbsize,
3191                        (unsigned long) MAX_SLIM_IOCB_SIZE);
3192         }
3193         if (phba->cfg_multi_ring_support == 2)
3194                 lpfc_extra_ring_setup(phba);
3195
3196         return 0;
3197 }
3198
3199 int
3200 lpfc_sli_queue_setup(struct lpfc_hba *phba)
3201 {
3202         struct lpfc_sli *psli;
3203         struct lpfc_sli_ring *pring;
3204         int i;
3205
3206         psli = &phba->sli;
3207         spin_lock_irq(&phba->hbalock);
3208         INIT_LIST_HEAD(&psli->mboxq);
3209         INIT_LIST_HEAD(&psli->mboxq_cmpl);
3210         /* Initialize list headers for txq and txcmplq as double linked lists */
3211         for (i = 0; i < psli->num_rings; i++) {
3212                 pring = &psli->ring[i];
3213                 pring->ringno = i;
3214                 pring->next_cmdidx  = 0;
3215                 pring->local_getidx = 0;
3216                 pring->cmdidx = 0;
3217                 INIT_LIST_HEAD(&pring->txq);
3218                 INIT_LIST_HEAD(&pring->txcmplq);
3219                 INIT_LIST_HEAD(&pring->iocb_continueq);
3220                 INIT_LIST_HEAD(&pring->postbufq);
3221         }
3222         spin_unlock_irq(&phba->hbalock);
3223         return 1;
3224 }
3225
3226 int
3227 lpfc_sli_host_down(struct lpfc_vport *vport)
3228 {
3229         LIST_HEAD(completions);
3230         struct lpfc_hba *phba = vport->phba;
3231         struct lpfc_sli *psli = &phba->sli;
3232         struct lpfc_sli_ring *pring;
3233         struct lpfc_iocbq *iocb, *next_iocb;
3234         int i;
3235         unsigned long flags = 0;
3236         uint16_t prev_pring_flag;
3237
3238         lpfc_cleanup_discovery_resources(vport);
3239
3240         spin_lock_irqsave(&phba->hbalock, flags);
3241         for (i = 0; i < psli->num_rings; i++) {
3242                 pring = &psli->ring[i];
3243                 prev_pring_flag = pring->flag;
3244                 if (pring->ringno == LPFC_ELS_RING) /* Only slow rings */
3245                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
3246                 /*
3247                  * Error everything on the txq since these iocbs have not been
3248                  * given to the FW yet.
3249                  */
3250                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3251                         if (iocb->vport != vport)
3252                                 continue;
3253                         list_move_tail(&iocb->list, &completions);
3254                         pring->txq_cnt--;
3255                 }
3256
3257                 /* Next issue ABTS for everything on the txcmplq */
3258                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
3259                                                                         list) {
3260                         if (iocb->vport != vport)
3261                                 continue;
3262                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3263                 }
3264
3265                 pring->flag = prev_pring_flag;
3266         }
3267
3268         spin_unlock_irqrestore(&phba->hbalock, flags);
3269
3270         while (!list_empty(&completions)) {
3271                 list_remove_head(&completions, iocb, struct lpfc_iocbq, list);
3272
3273                 if (!iocb->iocb_cmpl)
3274                         lpfc_sli_release_iocbq(phba, iocb);
3275                 else {
3276                         iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
3277                         iocb->iocb.un.ulpWord[4] = IOERR_SLI_DOWN;
3278                         (iocb->iocb_cmpl) (phba, iocb, iocb);
3279                 }
3280         }
3281         return 1;
3282 }
3283
3284 int
3285 lpfc_sli_hba_down(struct lpfc_hba *phba)
3286 {
3287         LIST_HEAD(completions);
3288         struct lpfc_sli *psli = &phba->sli;
3289         struct lpfc_sli_ring *pring;
3290         struct lpfc_dmabuf *buf_ptr;
3291         LPFC_MBOXQ_t *pmb;
3292         struct lpfc_iocbq *iocb;
3293         IOCB_t *cmd = NULL;
3294         int i;
3295         unsigned long flags = 0;
3296
3297         lpfc_hba_down_prep(phba);
3298
3299         lpfc_fabric_abort_hba(phba);
3300
3301         spin_lock_irqsave(&phba->hbalock, flags);
3302         for (i = 0; i < psli->num_rings; i++) {
3303                 pring = &psli->ring[i];
3304                 if (pring->ringno == LPFC_ELS_RING) /* Only slow rings */
3305                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
3306
3307                 /*
3308                  * Error everything on the txq since these iocbs have not been
3309                  * given to the FW yet.
3310                  */
3311                 list_splice_init(&pring->txq, &completions);
3312                 pring->txq_cnt = 0;
3313
3314         }
3315         spin_unlock_irqrestore(&phba->hbalock, flags);
3316
3317         while (!list_empty(&completions)) {
3318                 list_remove_head(&completions, iocb, struct lpfc_iocbq, list);
3319                 cmd = &iocb->iocb;
3320
3321                 if (!iocb->iocb_cmpl)
3322                         lpfc_sli_release_iocbq(phba, iocb);
3323                 else {
3324                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3325                         cmd->un.ulpWord[4] = IOERR_SLI_DOWN;
3326                         (iocb->iocb_cmpl) (phba, iocb, iocb);
3327                 }
3328         }
3329
3330         spin_lock_irqsave(&phba->hbalock, flags);
3331         list_splice_init(&phba->elsbuf, &completions);
3332         phba->elsbuf_cnt = 0;
3333         phba->elsbuf_prev_cnt = 0;
3334         spin_unlock_irqrestore(&phba->hbalock, flags);
3335
3336         while (!list_empty(&completions)) {
3337                 list_remove_head(&completions, buf_ptr,
3338                         struct lpfc_dmabuf, list);
3339                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
3340                 kfree(buf_ptr);
3341         }
3342
3343         /* Return any active mbox cmds */
3344         del_timer_sync(&psli->mbox_tmo);
3345         spin_lock_irqsave(&phba->hbalock, flags);
3346
3347         spin_lock(&phba->pport->work_port_lock);
3348         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
3349         spin_unlock(&phba->pport->work_port_lock);
3350
3351         if (psli->mbox_active) {
3352                 list_add_tail(&psli->mbox_active->list, &completions);
3353                 psli->mbox_active = NULL;
3354                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
3355         }
3356
3357         /* Return any pending or completed mbox cmds */
3358         list_splice_init(&phba->sli.mboxq, &completions);
3359         list_splice_init(&phba->sli.mboxq_cmpl, &completions);
3360         INIT_LIST_HEAD(&psli->mboxq);
3361         INIT_LIST_HEAD(&psli->mboxq_cmpl);
3362
3363         spin_unlock_irqrestore(&phba->hbalock, flags);
3364
3365         while (!list_empty(&completions)) {
3366                 list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
3367                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
3368                 if (pmb->mbox_cmpl) {
3369                         pmb->mbox_cmpl(phba,pmb);
3370                 }
3371         }
3372         return 1;
3373 }
3374
3375 void
3376 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
3377 {
3378         uint32_t *src = srcp;
3379         uint32_t *dest = destp;
3380         uint32_t ldata;
3381         int i;
3382
3383         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
3384                 ldata = *src;
3385                 ldata = le32_to_cpu(ldata);
3386                 *dest = ldata;
3387                 src++;
3388                 dest++;
3389         }
3390 }
3391
3392 int
3393 lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3394                          struct lpfc_dmabuf *mp)
3395 {
3396         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
3397            later */
3398         spin_lock_irq(&phba->hbalock);
3399         list_add_tail(&mp->list, &pring->postbufq);
3400         pring->postbufq_cnt++;
3401         spin_unlock_irq(&phba->hbalock);
3402         return 0;
3403 }
3404
3405 uint32_t
3406 lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
3407 {
3408         spin_lock_irq(&phba->hbalock);
3409         phba->buffer_tag_count++;
3410         /*
3411          * Always set the QUE_BUFTAG_BIT to distiguish between
3412          * a tag assigned by HBQ.
3413          */
3414         phba->buffer_tag_count |= QUE_BUFTAG_BIT;
3415         spin_unlock_irq(&phba->hbalock);
3416         return phba->buffer_tag_count;
3417 }
3418
3419 struct lpfc_dmabuf *
3420 lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3421                         uint32_t tag)
3422 {
3423         struct lpfc_dmabuf *mp, *next_mp;
3424         struct list_head *slp = &pring->postbufq;
3425
3426         /* Search postbufq, from the begining, looking for a match on tag */
3427         spin_lock_irq(&phba->hbalock);
3428         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
3429                 if (mp->buffer_tag == tag) {
3430                         list_del_init(&mp->list);
3431                         pring->postbufq_cnt--;
3432                         spin_unlock_irq(&phba->hbalock);
3433                         return mp;
3434                 }
3435         }
3436
3437         spin_unlock_irq(&phba->hbalock);
3438         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3439                         "0410 Cannot find virtual addr for buffer tag on "
3440                         "ring %d Data x%lx x%p x%p x%x\n",
3441                         pring->ringno, (unsigned long) tag,
3442                         slp->next, slp->prev, pring->postbufq_cnt);
3443
3444         return NULL;
3445 }
3446
3447 struct lpfc_dmabuf *
3448 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3449                          dma_addr_t phys)
3450 {
3451         struct lpfc_dmabuf *mp, *next_mp;
3452         struct list_head *slp = &pring->postbufq;
3453
3454         /* Search postbufq, from the begining, looking for a match on phys */
3455         spin_lock_irq(&phba->hbalock);
3456         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
3457                 if (mp->phys == phys) {
3458                         list_del_init(&mp->list);
3459                         pring->postbufq_cnt--;
3460                         spin_unlock_irq(&phba->hbalock);
3461                         return mp;
3462                 }
3463         }
3464
3465         spin_unlock_irq(&phba->hbalock);
3466         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3467                         "0410 Cannot find virtual addr for mapped buf on "
3468                         "ring %d Data x%llx x%p x%p x%x\n",
3469                         pring->ringno, (unsigned long long)phys,
3470                         slp->next, slp->prev, pring->postbufq_cnt);
3471         return NULL;
3472 }
3473
3474 static void
3475 lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3476                         struct lpfc_iocbq *rspiocb)
3477 {
3478         IOCB_t *irsp = &rspiocb->iocb;
3479         uint16_t abort_iotag, abort_context;
3480         struct lpfc_iocbq *abort_iocb;
3481         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
3482
3483         abort_iocb = NULL;
3484
3485         if (irsp->ulpStatus) {
3486                 abort_context = cmdiocb->iocb.un.acxri.abortContextTag;
3487                 abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag;
3488
3489                 spin_lock_irq(&phba->hbalock);
3490                 if (abort_iotag != 0 && abort_iotag <= phba->sli.last_iotag)
3491                         abort_iocb = phba->sli.iocbq_lookup[abort_iotag];
3492
3493                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_SLI,
3494                                 "0327 Cannot abort els iocb %p "
3495                                 "with tag %x context %x, abort status %x, "
3496                                 "abort code %x\n",
3497                                 abort_iocb, abort_iotag, abort_context,
3498                                 irsp->ulpStatus, irsp->un.ulpWord[4]);
3499
3500                 /*
3501                  * make sure we have the right iocbq before taking it
3502                  * off the txcmplq and try to call completion routine.
3503                  */
3504                 if (!abort_iocb ||
3505                     abort_iocb->iocb.ulpContext != abort_context ||
3506                     (abort_iocb->iocb_flag & LPFC_DRIVER_ABORTED) == 0)
3507                         spin_unlock_irq(&phba->hbalock);
3508                 else {
3509                         list_del_init(&abort_iocb->list);
3510                         pring->txcmplq_cnt--;
3511                         spin_unlock_irq(&phba->hbalock);
3512
3513                         /* Firmware could still be in progress of DMAing
3514                          * payload, so don't free data buffer till after
3515                          * a hbeat.
3516                          */
3517                         abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE;
3518
3519                         abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED;
3520                         abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
3521                         abort_iocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
3522                         (abort_iocb->iocb_cmpl)(phba, abort_iocb, abort_iocb);
3523                 }
3524         }
3525
3526         lpfc_sli_release_iocbq(phba, cmdiocb);
3527         return;
3528 }
3529
3530 static void
3531 lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3532                      struct lpfc_iocbq *rspiocb)
3533 {
3534         IOCB_t *irsp = &rspiocb->iocb;
3535
3536         /* ELS cmd tag <ulpIoTag> completes */
3537         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
3538                         "0133 Ignoring ELS cmd tag x%x completion Data: "
3539                         "x%x x%x x%x\n",
3540                         irsp->ulpIoTag, irsp->ulpStatus,
3541                         irsp->un.ulpWord[4], irsp->ulpTimeout);
3542         if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR)
3543                 lpfc_ct_free_iocb(phba, cmdiocb);
3544         else
3545                 lpfc_els_free_iocb(phba, cmdiocb);
3546         return;
3547 }
3548
3549 int
3550 lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3551                            struct lpfc_iocbq *cmdiocb)
3552 {
3553         struct lpfc_vport *vport = cmdiocb->vport;
3554         struct lpfc_iocbq *abtsiocbp;
3555         IOCB_t *icmd = NULL;
3556         IOCB_t *iabt = NULL;
3557         int retval = IOCB_ERROR;
3558
3559         /*
3560          * There are certain command types we don't want to abort.  And we
3561          * don't want to abort commands that are already in the process of
3562          * being aborted.
3563          */
3564         icmd = &cmdiocb->iocb;
3565         if (icmd->ulpCommand == CMD_ABORT_XRI_CN ||
3566             icmd->ulpCommand == CMD_CLOSE_XRI_CN ||
3567             (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0)
3568                 return 0;
3569
3570         /* If we're unloading, don't abort iocb on the ELS ring, but change the
3571          * callback so that nothing happens when it finishes.
3572          */
3573         if ((vport->load_flag & FC_UNLOADING) &&
3574             (pring->ringno == LPFC_ELS_RING)) {
3575                 if (cmdiocb->iocb_flag & LPFC_IO_FABRIC)
3576                         cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl;
3577                 else
3578                         cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl;
3579                 goto abort_iotag_exit;
3580         }
3581
3582         /* issue ABTS for this IOCB based on iotag */
3583         abtsiocbp = __lpfc_sli_get_iocbq(phba);
3584         if (abtsiocbp == NULL)
3585                 return 0;
3586
3587         /* This signals the response to set the correct status
3588          * before calling the completion handler.
3589          */
3590         cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED;
3591
3592         iabt = &abtsiocbp->iocb;
3593         iabt->un.acxri.abortType = ABORT_TYPE_ABTS;
3594         iabt->un.acxri.abortContextTag = icmd->ulpContext;
3595         iabt->un.acxri.abortIoTag = icmd->ulpIoTag;
3596         iabt->ulpLe = 1;
3597         iabt->ulpClass = icmd->ulpClass;
3598
3599         if (phba->link_state >= LPFC_LINK_UP)
3600                 iabt->ulpCommand = CMD_ABORT_XRI_CN;
3601         else
3602                 iabt->ulpCommand = CMD_CLOSE_XRI_CN;
3603
3604         abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl;
3605
3606         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3607                          "0339 Abort xri x%x, original iotag x%x, "
3608                          "abort cmd iotag x%x\n",
3609                          iabt->un.acxri.abortContextTag,
3610                          iabt->un.acxri.abortIoTag, abtsiocbp->iotag);
3611         retval = __lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0);
3612
3613 abort_iotag_exit:
3614         /*
3615          * Caller to this routine should check for IOCB_ERROR
3616          * and handle it properly.  This routine no longer removes
3617          * iocb off txcmplq and call compl in case of IOCB_ERROR.
3618          */
3619         return retval;
3620 }
3621
3622 static int
3623 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport,
3624                            uint16_t tgt_id, uint64_t lun_id,
3625                            lpfc_ctx_cmd ctx_cmd)
3626 {
3627         struct lpfc_scsi_buf *lpfc_cmd;
3628         struct scsi_cmnd *cmnd;
3629         int rc = 1;
3630
3631         if (!(iocbq->iocb_flag &  LPFC_IO_FCP))
3632                 return rc;
3633
3634         if (iocbq->vport != vport)
3635                 return rc;
3636
3637         lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
3638         cmnd = lpfc_cmd->pCmd;
3639
3640         if (cmnd == NULL)
3641                 return rc;
3642
3643         switch (ctx_cmd) {
3644         case LPFC_CTX_LUN:
3645                 if ((cmnd->device->id == tgt_id) &&
3646                     (cmnd->device->lun == lun_id))
3647                         rc = 0;
3648                 break;
3649         case LPFC_CTX_TGT:
3650                 if (cmnd->device->id == tgt_id)
3651                         rc = 0;
3652                 break;
3653         case LPFC_CTX_HOST:
3654                 rc = 0;
3655                 break;
3656         default:
3657                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
3658                         __FUNCTION__, ctx_cmd);
3659                 break;
3660         }
3661
3662         return rc;
3663 }
3664
3665 int
3666 lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
3667                   lpfc_ctx_cmd ctx_cmd)
3668 {
3669         struct lpfc_hba *phba = vport->phba;
3670         struct lpfc_iocbq *iocbq;
3671         int sum, i;
3672
3673         for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
3674                 iocbq = phba->sli.iocbq_lookup[i];
3675
3676                 if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id,
3677                                                 ctx_cmd) == 0)
3678                         sum++;
3679         }
3680
3681         return sum;
3682 }
3683
3684 void
3685 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3686                         struct lpfc_iocbq *rspiocb)
3687 {
3688         lpfc_sli_release_iocbq(phba, cmdiocb);
3689         return;
3690 }
3691
3692 int
3693 lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
3694                     uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd)
3695 {
3696         struct lpfc_hba *phba = vport->phba;
3697         struct lpfc_iocbq *iocbq;
3698         struct lpfc_iocbq *abtsiocb;
3699         IOCB_t *cmd = NULL;
3700         int errcnt = 0, ret_val = 0;
3701         int i;
3702
3703         for (i = 1; i <= phba->sli.last_iotag; i++) {
3704                 iocbq = phba->sli.iocbq_lookup[i];
3705
3706                 if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
3707                                                abort_cmd) != 0)
3708                         continue;
3709
3710                 /* issue ABTS for this IOCB based on iotag */
3711                 abtsiocb = lpfc_sli_get_iocbq(phba);
3712                 if (abtsiocb == NULL) {
3713                         errcnt++;
3714                         continue;
3715                 }
3716
3717                 cmd = &iocbq->iocb;
3718                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
3719                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
3720                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
3721                 abtsiocb->iocb.ulpLe = 1;
3722                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
3723                 abtsiocb->vport = phba->pport;
3724
3725                 if (lpfc_is_link_up(phba))
3726                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
3727                 else
3728                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
3729
3730                 /* Setup callback routine and issue the command. */
3731                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
3732                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
3733                 if (ret_val == IOCB_ERROR) {
3734                         lpfc_sli_release_iocbq(phba, abtsiocb);
3735                         errcnt++;
3736                         continue;
3737                 }
3738         }
3739
3740         return errcnt;
3741 }
3742
3743 static void
3744 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
3745                         struct lpfc_iocbq *cmdiocbq,
3746                         struct lpfc_iocbq *rspiocbq)
3747 {
3748         wait_queue_head_t *pdone_q;
3749         unsigned long iflags;
3750
3751         spin_lock_irqsave(&phba->hbalock, iflags);
3752         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
3753         if (cmdiocbq->context2 && rspiocbq)
3754                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
3755                        &rspiocbq->iocb, sizeof(IOCB_t));
3756
3757         pdone_q = cmdiocbq->context_un.wait_queue;
3758         if (pdone_q)
3759                 wake_up(pdone_q);
3760         spin_unlock_irqrestore(&phba->hbalock, iflags);
3761         return;
3762 }
3763
3764 /*
3765  * Issue the caller's iocb and wait for its completion, but no longer than the
3766  * caller's timeout.  Note that iocb_flags is cleared before the
3767  * lpfc_sli_issue_call since the wake routine sets a unique value and by
3768  * definition this is a wait function.
3769  */
3770
3771 int
3772 lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
3773                          struct lpfc_sli_ring *pring,
3774                          struct lpfc_iocbq *piocb,
3775                          struct lpfc_iocbq *prspiocbq,
3776                          uint32_t timeout)
3777 {
3778         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3779         long timeleft, timeout_req = 0;
3780         int retval = IOCB_SUCCESS;
3781         uint32_t creg_val;
3782
3783         /*
3784          * If the caller has provided a response iocbq buffer, then context2
3785          * is NULL or its an error.
3786          */
3787         if (prspiocbq) {
3788                 if (piocb->context2)
3789                         return IOCB_ERROR;
3790                 piocb->context2 = prspiocbq;
3791         }
3792
3793         piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
3794         piocb->context_un.wait_queue = &done_q;
3795         piocb->iocb_flag &= ~LPFC_IO_WAKE;
3796
3797         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3798                 creg_val = readl(phba->HCregaddr);
3799                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
3800                 writel(creg_val, phba->HCregaddr);
3801                 readl(phba->HCregaddr); /* flush */
3802         }
3803
3804         retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
3805         if (retval == IOCB_SUCCESS) {
3806                 timeout_req = timeout * HZ;
3807                 timeleft = wait_event_timeout(done_q,
3808                                 piocb->iocb_flag & LPFC_IO_WAKE,
3809                                 timeout_req);
3810
3811                 if (piocb->iocb_flag & LPFC_IO_WAKE) {
3812                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3813                                         "0331 IOCB wake signaled\n");
3814                 } else if (timeleft == 0) {
3815                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3816                                         "0338 IOCB wait timeout error - no "
3817                                         "wake response Data x%x\n", timeout);
3818                         retval = IOCB_TIMEDOUT;
3819                 } else {
3820                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3821                                         "0330 IOCB wake NOT set, "
3822                                         "Data x%x x%lx\n",
3823                                         timeout, (timeleft / jiffies));
3824                         retval = IOCB_TIMEDOUT;
3825                 }
3826         } else {
3827                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3828                                 ":0332 IOCB wait issue failed, Data x%x\n",
3829                                 retval);
3830                 retval = IOCB_ERROR;
3831         }
3832
3833         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3834                 creg_val = readl(phba->HCregaddr);
3835                 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
3836                 writel(creg_val, phba->HCregaddr);
3837                 readl(phba->HCregaddr); /* flush */
3838         }
3839
3840         if (prspiocbq)
3841                 piocb->context2 = NULL;
3842
3843         piocb->context_un.wait_queue = NULL;
3844         piocb->iocb_cmpl = NULL;
3845         return retval;
3846 }
3847
3848 int
3849 lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
3850                          uint32_t timeout)
3851 {
3852         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3853         int retval;
3854         unsigned long flag;
3855
3856         /* The caller must leave context1 empty. */
3857         if (pmboxq->context1)
3858                 return MBX_NOT_FINISHED;
3859
3860         /* setup wake call as IOCB callback */
3861         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
3862         /* setup context field to pass wait_queue pointer to wake function  */
3863         pmboxq->context1 = &done_q;
3864
3865         /* now issue the command */
3866         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3867
3868         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
3869                 wait_event_interruptible_timeout(done_q,
3870                                 pmboxq->mbox_flag & LPFC_MBX_WAKE,
3871                                 timeout * HZ);
3872
3873                 spin_lock_irqsave(&phba->hbalock, flag);
3874                 pmboxq->context1 = NULL;
3875                 /*
3876                  * if LPFC_MBX_WAKE flag is set the mailbox is completed
3877                  * else do not free the resources.
3878                  */
3879                 if (pmboxq->mbox_flag & LPFC_MBX_WAKE)
3880                         retval = MBX_SUCCESS;
3881                 else {
3882                         retval = MBX_TIMEOUT;
3883                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3884                 }
3885                 spin_unlock_irqrestore(&phba->hbalock, flag);
3886         }
3887
3888         return retval;
3889 }
3890
3891 int
3892 lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba)
3893 {
3894         struct lpfc_vport *vport = phba->pport;
3895         int i = 0;
3896         uint32_t ha_copy;
3897
3898         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !vport->stopped) {
3899                 if (i++ > LPFC_MBOX_TMO * 1000)
3900                         return 1;
3901
3902                 /*
3903                  * Call lpfc_sli_handle_mb_event only if a mailbox cmd
3904                  * did finish. This way we won't get the misleading
3905                  * "Stray Mailbox Interrupt" message.
3906                  */
3907                 spin_lock_irq(&phba->hbalock);
3908                 ha_copy = phba->work_ha;
3909                 phba->work_ha &= ~HA_MBATT;
3910                 spin_unlock_irq(&phba->hbalock);
3911
3912                 if (ha_copy & HA_MBATT)
3913                         if (lpfc_sli_handle_mb_event(phba) == 0)
3914                                 i = 0;
3915
3916                 msleep(1);
3917         }
3918
3919         return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0;
3920 }
3921
3922 irqreturn_t
3923 lpfc_intr_handler(int irq, void *dev_id)
3924 {
3925         struct lpfc_hba  *phba;
3926         uint32_t ha_copy;
3927         uint32_t work_ha_copy;
3928         unsigned long status;
3929         uint32_t control;
3930
3931         MAILBOX_t *mbox, *pmbox;
3932         struct lpfc_vport *vport;
3933         struct lpfc_nodelist *ndlp;
3934         struct lpfc_dmabuf *mp;
3935         LPFC_MBOXQ_t *pmb;
3936         int rc;
3937
3938         /*
3939          * Get the driver's phba structure from the dev_id and
3940          * assume the HBA is not interrupting.
3941          */
3942         phba = (struct lpfc_hba *) dev_id;
3943
3944         if (unlikely(!phba))
3945                 return IRQ_NONE;
3946
3947         /* If the pci channel is offline, ignore all the interrupts. */
3948         if (unlikely(pci_channel_offline(phba->pcidev)))
3949                 return IRQ_NONE;
3950
3951         phba->sli.slistat.sli_intr++;
3952
3953         /*
3954          * Call the HBA to see if it is interrupting.  If not, don't claim
3955          * the interrupt
3956          */
3957
3958         /* Ignore all interrupts during initialization. */
3959         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
3960                 return IRQ_NONE;
3961
3962         /*
3963          * Read host attention register to determine interrupt source
3964          * Clear Attention Sources, except Error Attention (to
3965          * preserve status) and Link Attention
3966          */
3967         spin_lock(&phba->hbalock);
3968         ha_copy = readl(phba->HAregaddr);
3969         /* If somebody is waiting to handle an eratt don't process it
3970          * here.  The brdkill function will do this.
3971          */
3972         if (phba->link_flag & LS_IGNORE_ERATT)
3973                 ha_copy &= ~HA_ERATT;
3974         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
3975         readl(phba->HAregaddr); /* flush */
3976         spin_unlock(&phba->hbalock);
3977
3978         if (unlikely(!ha_copy))
3979                 return IRQ_NONE;
3980
3981         work_ha_copy = ha_copy & phba->work_ha_mask;
3982
3983         if (unlikely(work_ha_copy)) {
3984                 if (work_ha_copy & HA_LATT) {
3985                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
3986                                 /*
3987                                  * Turn off Link Attention interrupts
3988                                  * until CLEAR_LA done
3989                                  */
3990                                 spin_lock(&phba->hbalock);
3991                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
3992                                 control = readl(phba->HCregaddr);
3993                                 control &= ~HC_LAINT_ENA;
3994                                 writel(control, phba->HCregaddr);
3995                                 readl(phba->HCregaddr); /* flush */
3996                                 spin_unlock(&phba->hbalock);
3997                         }
3998                         else
3999                                 work_ha_copy &= ~HA_LATT;
4000                 }
4001
4002                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
4003                         /*
4004                          * Turn off Slow Rings interrupts, LPFC_ELS_RING is
4005                          * the only slow ring.
4006                          */
4007                         status = (work_ha_copy &
4008                                 (HA_RXMASK  << (4*LPFC_ELS_RING)));
4009                         status >>= (4*LPFC_ELS_RING);
4010                         if (status & HA_RXMASK) {
4011                                 spin_lock(&phba->hbalock);
4012                                 control = readl(phba->HCregaddr);
4013
4014                                 lpfc_debugfs_slow_ring_trc(phba,
4015                                 "ISR slow ring:   ctl:x%x stat:x%x isrcnt:x%x",
4016                                 control, status,
4017                                 (uint32_t)phba->sli.slistat.sli_intr);
4018
4019                                 if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
4020                                         lpfc_debugfs_slow_ring_trc(phba,
4021                                                 "ISR Disable ring:"
4022                                                 "pwork:x%x hawork:x%x wait:x%x",
4023                                                 phba->work_ha, work_ha_copy,
4024                                                 (uint32_t)((unsigned long)
4025                                                 phba->work_wait));
4026
4027                                         control &=
4028                                             ~(HC_R0INT_ENA << LPFC_ELS_RING);
4029                                         writel(control, phba->HCregaddr);
4030                                         readl(phba->HCregaddr); /* flush */
4031                                 }
4032                                 else {
4033                                         lpfc_debugfs_slow_ring_trc(phba,
4034                                                 "ISR slow ring:   pwork:"
4035                                                 "x%x hawork:x%x wait:x%x",
4036                                                 phba->work_ha, work_ha_copy,
4037                                                 (uint32_t)((unsigned long)
4038                                                 phba->work_wait));
4039                                 }
4040                                 spin_unlock(&phba->hbalock);
4041                         }
4042                 }
4043
4044                 if (work_ha_copy & HA_ERATT) {
4045                         phba->link_state = LPFC_HBA_ERROR;
4046                         /*
4047                          * There was a link/board error.  Read the
4048                          * status register to retrieve the error event
4049                          * and process it.
4050                          */
4051                         phba->sli.slistat.err_attn_event++;
4052                         /* Save status info */
4053                         phba->work_hs = readl(phba->HSregaddr);
4054                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
4055                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
4056
4057                         /* Clear Chip error bit */
4058                         writel(HA_ERATT, phba->HAregaddr);
4059                         readl(phba->HAregaddr); /* flush */
4060                         phba->pport->stopped = 1;
4061                 }
4062
4063                 if ((work_ha_copy & HA_MBATT) &&
4064                     (phba->sli.mbox_active)) {
4065                         pmb = phba->sli.mbox_active;
4066                         pmbox = &pmb->mb;
4067                         mbox = &phba->slim2p->mbx;
4068                         vport = pmb->vport;
4069
4070                         /* First check out the status word */
4071                         lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t));
4072                         if (pmbox->mbxOwner != OWN_HOST) {
4073                                 /*
4074                                  * Stray Mailbox Interrupt, mbxCommand <cmd>
4075                                  * mbxStatus <status>
4076                                  */
4077                                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX |
4078                                                 LOG_SLI,
4079                                                 "(%d):0304 Stray Mailbox "
4080                                                 "Interrupt mbxCommand x%x "
4081                                                 "mbxStatus x%x\n",
4082                                                 (vport ? vport->vpi : 0),
4083                                                 pmbox->mbxCommand,
4084                                                 pmbox->mbxStatus);
4085                         }
4086                         phba->last_completion_time = jiffies;
4087                         del_timer_sync(&phba->sli.mbox_tmo);
4088
4089                         phba->sli.mbox_active = NULL;
4090                         if (pmb->mbox_cmpl) {
4091                                 lpfc_sli_pcimem_bcopy(mbox, pmbox,
4092                                                       MAILBOX_CMD_SIZE);
4093                         }
4094                         if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
4095                                 pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
4096
4097                                 lpfc_debugfs_disc_trc(vport,
4098                                         LPFC_DISC_TRC_MBOX_VPORT,
4099                                         "MBOX dflt rpi: : status:x%x rpi:x%x",
4100                                         (uint32_t)pmbox->mbxStatus,
4101                                         pmbox->un.varWords[0], 0);
4102
4103                                 if ( !pmbox->mbxStatus) {
4104                                         mp = (struct lpfc_dmabuf *)
4105                                                 (pmb->context1);
4106                                         ndlp = (struct lpfc_nodelist *)
4107                                                 pmb->context2;
4108
4109                                         /* Reg_LOGIN of dflt RPI was successful.
4110                                          * new lets get rid of the RPI using the
4111                                          * same mbox buffer.
4112                                          */
4113                                         lpfc_unreg_login(phba, vport->vpi,
4114                                                 pmbox->un.varWords[0], pmb);
4115                                         pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4116                                         pmb->context1 = mp;
4117                                         pmb->context2 = ndlp;
4118                                         pmb->vport = vport;
4119                                         spin_lock(&phba->hbalock);
4120                                         phba->sli.sli_flag &=
4121                                                 ~LPFC_SLI_MBOX_ACTIVE;
4122                                         spin_unlock(&phba->hbalock);
4123                                         goto send_current_mbox;
4124                                 }
4125                         }
4126                         spin_lock(&phba->pport->work_port_lock);
4127                         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
4128                         spin_unlock(&phba->pport->work_port_lock);
4129                         lpfc_mbox_cmpl_put(phba, pmb);
4130                 }
4131                 if ((work_ha_copy & HA_MBATT) &&
4132                     (phba->sli.mbox_active == NULL)) {
4133 send_next_mbox:
4134                         spin_lock(&phba->hbalock);
4135                         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
4136                         pmb = lpfc_mbox_get(phba);
4137                         spin_unlock(&phba->hbalock);
4138 send_current_mbox:
4139                         /* Process next mailbox command if there is one */
4140                         if (pmb != NULL) {
4141                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
4142                                 if (rc == MBX_NOT_FINISHED) {
4143                                         pmb->mb.mbxStatus = MBX_NOT_FINISHED;
4144                                         lpfc_mbox_cmpl_put(phba, pmb);
4145                                         goto send_next_mbox;
4146                                 }
4147                         }
4148
4149                 }
4150
4151                 spin_lock(&phba->hbalock);
4152                 phba->work_ha |= work_ha_copy;
4153                 if (phba->work_wait)
4154                         lpfc_worker_wake_up(phba);
4155                 spin_unlock(&phba->hbalock);
4156         }
4157
4158         ha_copy &= ~(phba->work_ha_mask);
4159
4160         /*
4161          * Process all events on FCP ring.  Take the optimized path for
4162          * FCP IO.  Any other IO is slow path and is handled by
4163          * the worker thread.
4164          */
4165         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
4166         status >>= (4*LPFC_FCP_RING);
4167         if (status & HA_RXMASK)
4168                 lpfc_sli_handle_fast_ring_event(phba,
4169                                                 &phba->sli.ring[LPFC_FCP_RING],
4170                                                 status);
4171
4172         if (phba->cfg_multi_ring_support == 2) {
4173                 /*
4174                  * Process all events on extra ring.  Take the optimized path
4175                  * for extra ring IO.  Any other IO is slow path and is handled
4176                  * by the worker thread.
4177                  */
4178                 status = (ha_copy & (HA_RXMASK  << (4*LPFC_EXTRA_RING)));
4179                 status >>= (4*LPFC_EXTRA_RING);
4180                 if (status & HA_RXMASK) {
4181                         lpfc_sli_handle_fast_ring_event(phba,
4182                                         &phba->sli.ring[LPFC_EXTRA_RING],
4183                                         status);
4184                 }
4185         }
4186         return IRQ_HANDLED;
4187
4188 } /* lpfc_intr_handler */