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   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                         }
1152                         (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
1153                 } else
1154                         lpfc_sli_release_iocbq(phba, cmdiocbp);
1155         } else {
1156                 /*
1157                  * Unknown initiating command based on the response iotag.
1158                  * This could be the case on the ELS ring because of
1159                  * lpfc_els_abort().
1160                  */
1161                 if (pring->ringno != LPFC_ELS_RING) {
1162                         /*
1163                          * Ring <ringno> handler: unexpected completion IoTag
1164                          * <IoTag>
1165                          */
1166                         lpfc_printf_vlog(cmdiocbp->vport, KERN_WARNING, LOG_SLI,
1167                                          "0322 Ring %d handler: "
1168                                          "unexpected completion IoTag x%x "
1169                                          "Data: x%x x%x x%x x%x\n",
1170                                          pring->ringno,
1171                                          saveq->iocb.ulpIoTag,
1172                                          saveq->iocb.ulpStatus,
1173                                          saveq->iocb.un.ulpWord[4],
1174                                          saveq->iocb.ulpCommand,
1175                                          saveq->iocb.ulpContext);
1176                 }
1177         }
1178
1179         return rc;
1180 }
1181
1182 static void
1183 lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1184 {
1185         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1186                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1187                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1188         /*
1189          * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1190          * rsp ring <portRspMax>
1191          */
1192         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1193                         "0312 Ring %d handler: portRspPut %d "
1194                         "is bigger then rsp ring %d\n",
1195                         pring->ringno, le32_to_cpu(pgp->rspPutInx),
1196                         pring->numRiocb);
1197
1198         phba->link_state = LPFC_HBA_ERROR;
1199
1200         /*
1201          * All error attention handlers are posted to
1202          * worker thread
1203          */
1204         phba->work_ha |= HA_ERATT;
1205         phba->work_hs = HS_FFER3;
1206
1207         /* hbalock should already be held */
1208         if (phba->work_wait)
1209                 lpfc_worker_wake_up(phba);
1210
1211         return;
1212 }
1213
1214 void lpfc_sli_poll_fcp_ring(struct lpfc_hba *phba)
1215 {
1216         struct lpfc_sli      *psli  = &phba->sli;
1217         struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
1218         IOCB_t *irsp = NULL;
1219         IOCB_t *entry = NULL;
1220         struct lpfc_iocbq *cmdiocbq = NULL;
1221         struct lpfc_iocbq rspiocbq;
1222         struct lpfc_pgp *pgp;
1223         uint32_t status;
1224         uint32_t portRspPut, portRspMax;
1225         int type;
1226         uint32_t rsp_cmpl = 0;
1227         uint32_t ha_copy;
1228         unsigned long iflags;
1229
1230         pring->stats.iocb_event++;
1231
1232         pgp = (phba->sli_rev == 3) ?
1233                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1234                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1235
1236
1237         /*
1238          * The next available response entry should never exceed the maximum
1239          * entries.  If it does, treat it as an adapter hardware error.
1240          */
1241         portRspMax = pring->numRiocb;
1242         portRspPut = le32_to_cpu(pgp->rspPutInx);
1243         if (unlikely(portRspPut >= portRspMax)) {
1244                 lpfc_sli_rsp_pointers_error(phba, pring);
1245                 return;
1246         }
1247
1248         rmb();
1249         while (pring->rspidx != portRspPut) {
1250                 entry = lpfc_resp_iocb(phba, pring);
1251                 if (++pring->rspidx >= portRspMax)
1252                         pring->rspidx = 0;
1253
1254                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1255                                       (uint32_t *) &rspiocbq.iocb,
1256                                       phba->iocb_rsp_size);
1257                 irsp = &rspiocbq.iocb;
1258                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1259                 pring->stats.iocb_rsp++;
1260                 rsp_cmpl++;
1261
1262                 if (unlikely(irsp->ulpStatus)) {
1263                         /* Rsp ring <ringno> error: IOCB */
1264                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1265                                         "0326 Rsp Ring %d error: IOCB Data: "
1266                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1267                                         pring->ringno,
1268                                         irsp->un.ulpWord[0],
1269                                         irsp->un.ulpWord[1],
1270                                         irsp->un.ulpWord[2],
1271                                         irsp->un.ulpWord[3],
1272                                         irsp->un.ulpWord[4],
1273                                         irsp->un.ulpWord[5],
1274                                         *(((uint32_t *) irsp) + 6),
1275                                         *(((uint32_t *) irsp) + 7));
1276                 }
1277
1278                 switch (type) {
1279                 case LPFC_ABORT_IOCB:
1280                 case LPFC_SOL_IOCB:
1281                         /*
1282                          * Idle exchange closed via ABTS from port.  No iocb
1283                          * resources need to be recovered.
1284                          */
1285                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1286                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1287                                                 "0314 IOCB cmd 0x%x "
1288                                                 "processed. Skipping "
1289                                                 "completion",
1290                                                 irsp->ulpCommand);
1291                                 break;
1292                         }
1293
1294                         spin_lock_irqsave(&phba->hbalock, iflags);
1295                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1296                                                          &rspiocbq);
1297                         spin_unlock_irqrestore(&phba->hbalock, iflags);
1298                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1299                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1300                                                       &rspiocbq);
1301                         }
1302                         break;
1303                 default:
1304                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1305                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1306                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1307                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1308                                        MAX_MSG_DATA);
1309                                 dev_warn(&((phba->pcidev)->dev),
1310                                          "lpfc%d: %s\n",
1311                                          phba->brd_no, adaptermsg);
1312                         } else {
1313                                 /* Unknown IOCB command */
1314                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1315                                                 "0321 Unknown IOCB command "
1316                                                 "Data: x%x, x%x x%x x%x x%x\n",
1317                                                 type, irsp->ulpCommand,
1318                                                 irsp->ulpStatus,
1319                                                 irsp->ulpIoTag,
1320                                                 irsp->ulpContext);
1321                         }
1322                         break;
1323                 }
1324
1325                 /*
1326                  * The response IOCB has been processed.  Update the ring
1327                  * pointer in SLIM.  If the port response put pointer has not
1328                  * been updated, sync the pgp->rspPutInx and fetch the new port
1329                  * response put pointer.
1330                  */
1331                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1332
1333                 if (pring->rspidx == portRspPut)
1334                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1335         }
1336
1337         ha_copy = readl(phba->HAregaddr);
1338         ha_copy >>= (LPFC_FCP_RING * 4);
1339
1340         if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
1341                 spin_lock_irqsave(&phba->hbalock, iflags);
1342                 pring->stats.iocb_rsp_full++;
1343                 status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
1344                 writel(status, phba->CAregaddr);
1345                 readl(phba->CAregaddr);
1346                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1347         }
1348         if ((ha_copy & HA_R0CE_RSP) &&
1349             (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1350                 spin_lock_irqsave(&phba->hbalock, iflags);
1351                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1352                 pring->stats.iocb_cmd_empty++;
1353
1354                 /* Force update of the local copy of cmdGetInx */
1355                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1356                 lpfc_sli_resume_iocb(phba, pring);
1357
1358                 if ((pring->lpfc_sli_cmd_available))
1359                         (pring->lpfc_sli_cmd_available) (phba, pring);
1360
1361                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1362         }
1363
1364         return;
1365 }
1366
1367 /*
1368  * This routine presumes LPFC_FCP_RING handling and doesn't bother
1369  * to check it explicitly.
1370  */
1371 static int
1372 lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
1373                                 struct lpfc_sli_ring *pring, uint32_t mask)
1374 {
1375         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1376                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1377                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1378         IOCB_t *irsp = NULL;
1379         IOCB_t *entry = NULL;
1380         struct lpfc_iocbq *cmdiocbq = NULL;
1381         struct lpfc_iocbq rspiocbq;
1382         uint32_t status;
1383         uint32_t portRspPut, portRspMax;
1384         int rc = 1;
1385         lpfc_iocb_type type;
1386         unsigned long iflag;
1387         uint32_t rsp_cmpl = 0;
1388
1389         spin_lock_irqsave(&phba->hbalock, iflag);
1390         pring->stats.iocb_event++;
1391
1392         /*
1393          * The next available response entry should never exceed the maximum
1394          * entries.  If it does, treat it as an adapter hardware error.
1395          */
1396         portRspMax = pring->numRiocb;
1397         portRspPut = le32_to_cpu(pgp->rspPutInx);
1398         if (unlikely(portRspPut >= portRspMax)) {
1399                 lpfc_sli_rsp_pointers_error(phba, pring);
1400                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1401                 return 1;
1402         }
1403
1404         rmb();
1405         while (pring->rspidx != portRspPut) {
1406                 /*
1407                  * Fetch an entry off the ring and copy it into a local data
1408                  * structure.  The copy involves a byte-swap since the
1409                  * network byte order and pci byte orders are different.
1410                  */
1411                 entry = lpfc_resp_iocb(phba, pring);
1412                 phba->last_completion_time = jiffies;
1413
1414                 if (++pring->rspidx >= portRspMax)
1415                         pring->rspidx = 0;
1416
1417                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1418                                       (uint32_t *) &rspiocbq.iocb,
1419                                       phba->iocb_rsp_size);
1420                 INIT_LIST_HEAD(&(rspiocbq.list));
1421                 irsp = &rspiocbq.iocb;
1422
1423                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1424                 pring->stats.iocb_rsp++;
1425                 rsp_cmpl++;
1426
1427                 if (unlikely(irsp->ulpStatus)) {
1428                         /*
1429                          * If resource errors reported from HBA, reduce
1430                          * queuedepths of the SCSI device.
1431                          */
1432                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1433                                 (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
1434                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1435                                 lpfc_adjust_queue_depth(phba);
1436                                 spin_lock_irqsave(&phba->hbalock, iflag);
1437                         }
1438
1439                         /* Rsp ring <ringno> error: IOCB */
1440                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1441                                         "0336 Rsp Ring %d error: IOCB Data: "
1442                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1443                                         pring->ringno,
1444                                         irsp->un.ulpWord[0],
1445                                         irsp->un.ulpWord[1],
1446                                         irsp->un.ulpWord[2],
1447                                         irsp->un.ulpWord[3],
1448                                         irsp->un.ulpWord[4],
1449                                         irsp->un.ulpWord[5],
1450                                         *(((uint32_t *) irsp) + 6),
1451                                         *(((uint32_t *) irsp) + 7));
1452                 }
1453
1454                 switch (type) {
1455                 case LPFC_ABORT_IOCB:
1456                 case LPFC_SOL_IOCB:
1457                         /*
1458                          * Idle exchange closed via ABTS from port.  No iocb
1459                          * resources need to be recovered.
1460                          */
1461                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1462                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1463                                                 "0333 IOCB cmd 0x%x"
1464                                                 " processed. Skipping"
1465                                                 " completion\n",
1466                                                 irsp->ulpCommand);
1467                                 break;
1468                         }
1469
1470                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1471                                                          &rspiocbq);
1472                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1473                                 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
1474                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1475                                                               &rspiocbq);
1476                                 } else {
1477                                         spin_unlock_irqrestore(&phba->hbalock,
1478                                                                iflag);
1479                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1480                                                               &rspiocbq);
1481                                         spin_lock_irqsave(&phba->hbalock,
1482                                                           iflag);
1483                                 }
1484                         }
1485                         break;
1486                 case LPFC_UNSOL_IOCB:
1487                         spin_unlock_irqrestore(&phba->hbalock, iflag);
1488                         lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
1489                         spin_lock_irqsave(&phba->hbalock, iflag);
1490                         break;
1491                 default:
1492                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1493                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1494                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1495                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1496                                        MAX_MSG_DATA);
1497                                 dev_warn(&((phba->pcidev)->dev),
1498                                          "lpfc%d: %s\n",
1499                                          phba->brd_no, adaptermsg);
1500                         } else {
1501                                 /* Unknown IOCB command */
1502                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1503                                                 "0334 Unknown IOCB command "
1504                                                 "Data: x%x, x%x x%x x%x x%x\n",
1505                                                 type, irsp->ulpCommand,
1506                                                 irsp->ulpStatus,
1507                                                 irsp->ulpIoTag,
1508                                                 irsp->ulpContext);
1509                         }
1510                         break;
1511                 }
1512
1513                 /*
1514                  * The response IOCB has been processed.  Update the ring
1515                  * pointer in SLIM.  If the port response put pointer has not
1516                  * been updated, sync the pgp->rspPutInx and fetch the new port
1517                  * response put pointer.
1518                  */
1519                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1520
1521                 if (pring->rspidx == portRspPut)
1522                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1523         }
1524
1525         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1526                 pring->stats.iocb_rsp_full++;
1527                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1528                 writel(status, phba->CAregaddr);
1529                 readl(phba->CAregaddr);
1530         }
1531         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1532                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1533                 pring->stats.iocb_cmd_empty++;
1534
1535                 /* Force update of the local copy of cmdGetInx */
1536                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1537                 lpfc_sli_resume_iocb(phba, pring);
1538
1539                 if ((pring->lpfc_sli_cmd_available))
1540                         (pring->lpfc_sli_cmd_available) (phba, pring);
1541
1542         }
1543
1544         spin_unlock_irqrestore(&phba->hbalock, iflag);
1545         return rc;
1546 }
1547
1548 int
1549 lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
1550                                 struct lpfc_sli_ring *pring, uint32_t mask)
1551 {
1552         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1553                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1554                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1555         IOCB_t *entry;
1556         IOCB_t *irsp = NULL;
1557         struct lpfc_iocbq *rspiocbp = NULL;
1558         struct lpfc_iocbq *next_iocb;
1559         struct lpfc_iocbq *cmdiocbp;
1560         struct lpfc_iocbq *saveq;
1561         uint8_t iocb_cmd_type;
1562         lpfc_iocb_type type;
1563         uint32_t status, free_saveq;
1564         uint32_t portRspPut, portRspMax;
1565         int rc = 1;
1566         unsigned long iflag;
1567
1568         spin_lock_irqsave(&phba->hbalock, iflag);
1569         pring->stats.iocb_event++;
1570
1571         /*
1572          * The next available response entry should never exceed the maximum
1573          * entries.  If it does, treat it as an adapter hardware error.
1574          */
1575         portRspMax = pring->numRiocb;
1576         portRspPut = le32_to_cpu(pgp->rspPutInx);
1577         if (portRspPut >= portRspMax) {
1578                 /*
1579                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1580                  * rsp ring <portRspMax>
1581                  */
1582                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1583                                 "0303 Ring %d handler: portRspPut %d "
1584                                 "is bigger then rsp ring %d\n",
1585                                 pring->ringno, portRspPut, portRspMax);
1586
1587                 phba->link_state = LPFC_HBA_ERROR;
1588                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1589
1590                 phba->work_hs = HS_FFER3;
1591                 lpfc_handle_eratt(phba);
1592
1593                 return 1;
1594         }
1595
1596         rmb();
1597         while (pring->rspidx != portRspPut) {
1598                 /*
1599                  * Build a completion list and call the appropriate handler.
1600                  * The process is to get the next available response iocb, get
1601                  * a free iocb from the list, copy the response data into the
1602                  * free iocb, insert to the continuation list, and update the
1603                  * next response index to slim.  This process makes response
1604                  * iocb's in the ring available to DMA as fast as possible but
1605                  * pays a penalty for a copy operation.  Since the iocb is
1606                  * only 32 bytes, this penalty is considered small relative to
1607                  * the PCI reads for register values and a slim write.  When
1608                  * the ulpLe field is set, the entire Command has been
1609                  * received.
1610                  */
1611                 entry = lpfc_resp_iocb(phba, pring);
1612
1613                 phba->last_completion_time = jiffies;
1614                 rspiocbp = __lpfc_sli_get_iocbq(phba);
1615                 if (rspiocbp == NULL) {
1616                         printk(KERN_ERR "%s: out of buffers! Failing "
1617                                "completion.\n", __FUNCTION__);
1618                         break;
1619                 }
1620
1621                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb,
1622                                       phba->iocb_rsp_size);
1623                 irsp = &rspiocbp->iocb;
1624
1625                 if (++pring->rspidx >= portRspMax)
1626                         pring->rspidx = 0;
1627
1628                 if (pring->ringno == LPFC_ELS_RING) {
1629                         lpfc_debugfs_slow_ring_trc(phba,
1630                         "IOCB rsp ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
1631                                 *(((uint32_t *) irsp) + 4),
1632                                 *(((uint32_t *) irsp) + 6),
1633                                 *(((uint32_t *) irsp) + 7));
1634                 }
1635
1636                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1637
1638                 if (list_empty(&(pring->iocb_continueq))) {
1639                         list_add(&rspiocbp->list, &(pring->iocb_continueq));
1640                 } else {
1641                         list_add_tail(&rspiocbp->list,
1642                                       &(pring->iocb_continueq));
1643                 }
1644
1645                 pring->iocb_continueq_cnt++;
1646                 if (irsp->ulpLe) {
1647                         /*
1648                          * By default, the driver expects to free all resources
1649                          * associated with this iocb completion.
1650                          */
1651                         free_saveq = 1;
1652                         saveq = list_get_first(&pring->iocb_continueq,
1653                                                struct lpfc_iocbq, list);
1654                         irsp = &(saveq->iocb);
1655                         list_del_init(&pring->iocb_continueq);
1656                         pring->iocb_continueq_cnt = 0;
1657
1658                         pring->stats.iocb_rsp++;
1659
1660                         /*
1661                          * If resource errors reported from HBA, reduce
1662                          * queuedepths of the SCSI device.
1663                          */
1664                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1665                              (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
1666                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1667                                 lpfc_adjust_queue_depth(phba);
1668                                 spin_lock_irqsave(&phba->hbalock, iflag);
1669                         }
1670
1671                         if (irsp->ulpStatus) {
1672                                 /* Rsp ring <ringno> error: IOCB */
1673                                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1674                                                 "0328 Rsp Ring %d error: "
1675                                                 "IOCB Data: "
1676                                                 "x%x x%x x%x x%x "
1677                                                 "x%x x%x x%x x%x "
1678                                                 "x%x x%x x%x x%x "
1679                                                 "x%x x%x x%x x%x\n",
1680                                                 pring->ringno,
1681                                                 irsp->un.ulpWord[0],
1682                                                 irsp->un.ulpWord[1],
1683                                                 irsp->un.ulpWord[2],
1684                                                 irsp->un.ulpWord[3],
1685                                                 irsp->un.ulpWord[4],
1686                                                 irsp->un.ulpWord[5],
1687                                                 *(((uint32_t *) irsp) + 6),
1688                                                 *(((uint32_t *) irsp) + 7),
1689                                                 *(((uint32_t *) irsp) + 8),
1690                                                 *(((uint32_t *) irsp) + 9),
1691                                                 *(((uint32_t *) irsp) + 10),
1692                                                 *(((uint32_t *) irsp) + 11),
1693                                                 *(((uint32_t *) irsp) + 12),
1694                                                 *(((uint32_t *) irsp) + 13),
1695                                                 *(((uint32_t *) irsp) + 14),
1696                                                 *(((uint32_t *) irsp) + 15));
1697                         }
1698
1699                         /*
1700                          * Fetch the IOCB command type and call the correct
1701                          * completion routine.  Solicited and Unsolicited
1702                          * IOCBs on the ELS ring get freed back to the
1703                          * lpfc_iocb_list by the discovery kernel thread.
1704                          */
1705                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1706                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1707                         if (type == LPFC_SOL_IOCB) {
1708                                 spin_unlock_irqrestore(&phba->hbalock,
1709                                                        iflag);
1710                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1711                                                                saveq);
1712                                 spin_lock_irqsave(&phba->hbalock, iflag);
1713                         } else if (type == LPFC_UNSOL_IOCB) {
1714                                 spin_unlock_irqrestore(&phba->hbalock,
1715                                                        iflag);
1716                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1717                                                                  saveq);
1718                                 spin_lock_irqsave(&phba->hbalock, iflag);
1719                         } else if (type == LPFC_ABORT_IOCB) {
1720                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1721                                     ((cmdiocbp =
1722                                       lpfc_sli_iocbq_lookup(phba, pring,
1723                                                             saveq)))) {
1724                                         /* Call the specified completion
1725                                            routine */
1726                                         if (cmdiocbp->iocb_cmpl) {
1727                                                 spin_unlock_irqrestore(
1728                                                        &phba->hbalock,
1729                                                        iflag);
1730                                                 (cmdiocbp->iocb_cmpl) (phba,
1731                                                              cmdiocbp, saveq);
1732                                                 spin_lock_irqsave(
1733                                                           &phba->hbalock,
1734                                                           iflag);
1735                                         } else
1736                                                 __lpfc_sli_release_iocbq(phba,
1737                                                                       cmdiocbp);
1738                                 }
1739                         } else if (type == LPFC_UNKNOWN_IOCB) {
1740                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1741
1742                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1743
1744                                         memset(adaptermsg, 0,
1745                                                LPFC_MAX_ADPTMSG);
1746                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1747                                                MAX_MSG_DATA);
1748                                         dev_warn(&((phba->pcidev)->dev),
1749                                                  "lpfc%d: %s\n",
1750                                                  phba->brd_no, adaptermsg);
1751                                 } else {
1752                                         /* Unknown IOCB command */
1753                                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1754                                                         "0335 Unknown IOCB "
1755                                                         "command Data: x%x "
1756                                                         "x%x x%x x%x\n",
1757                                                         irsp->ulpCommand,
1758                                                         irsp->ulpStatus,
1759                                                         irsp->ulpIoTag,
1760                                                         irsp->ulpContext);
1761                                 }
1762                         }
1763
1764                         if (free_saveq) {
1765                                 list_for_each_entry_safe(rspiocbp, next_iocb,
1766                                                          &saveq->list, list) {
1767                                         list_del(&rspiocbp->list);
1768                                         __lpfc_sli_release_iocbq(phba,
1769                                                                  rspiocbp);
1770                                 }
1771                                 __lpfc_sli_release_iocbq(phba, saveq);
1772                         }
1773                         rspiocbp = NULL;
1774                 }
1775
1776                 /*
1777                  * If the port response put pointer has not been updated, sync
1778                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1779                  * response put pointer.
1780                  */
1781                 if (pring->rspidx == portRspPut) {
1782                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1783                 }
1784         } /* while (pring->rspidx != portRspPut) */
1785
1786         if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) {
1787                 /* At least one response entry has been freed */
1788                 pring->stats.iocb_rsp_full++;
1789                 /* SET RxRE_RSP in Chip Att register */
1790                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1791                 writel(status, phba->CAregaddr);
1792                 readl(phba->CAregaddr); /* flush */
1793         }
1794         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1795                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1796                 pring->stats.iocb_cmd_empty++;
1797
1798                 /* Force update of the local copy of cmdGetInx */
1799                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1800                 lpfc_sli_resume_iocb(phba, pring);
1801
1802                 if ((pring->lpfc_sli_cmd_available))
1803                         (pring->lpfc_sli_cmd_available) (phba, pring);
1804
1805         }
1806
1807         spin_unlock_irqrestore(&phba->hbalock, iflag);
1808         return rc;
1809 }
1810
1811 void
1812 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1813 {
1814         LIST_HEAD(completions);
1815         struct lpfc_iocbq *iocb, *next_iocb;
1816         IOCB_t *cmd = NULL;
1817
1818         if (pring->ringno == LPFC_ELS_RING) {
1819                 lpfc_fabric_abort_hba(phba);
1820         }
1821
1822         /* Error everything on txq and txcmplq
1823          * First do the txq.
1824          */
1825         spin_lock_irq(&phba->hbalock);
1826         list_splice_init(&pring->txq, &completions);
1827         pring->txq_cnt = 0;
1828
1829         /* Next issue ABTS for everything on the txcmplq */
1830         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list)
1831                 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
1832
1833         spin_unlock_irq(&phba->hbalock);
1834
1835         while (!list_empty(&completions)) {
1836                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1837                 cmd = &iocb->iocb;
1838                 list_del_init(&iocb->list);
1839
1840                 if (!iocb->iocb_cmpl)
1841                         lpfc_sli_release_iocbq(phba, iocb);
1842                 else {
1843                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1844                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1845                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1846                 }
1847         }
1848 }
1849
1850 int
1851 lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
1852 {
1853         uint32_t status;
1854         int i = 0;
1855         int retval = 0;
1856
1857         /* Read the HBA Host Status Register */
1858         status = readl(phba->HSregaddr);
1859
1860         /*
1861          * Check status register every 100ms for 5 retries, then every
1862          * 500ms for 5, then every 2.5 sec for 5, then reset board and
1863          * every 2.5 sec for 4.
1864          * Break our of the loop if errors occurred during init.
1865          */
1866         while (((status & mask) != mask) &&
1867                !(status & HS_FFERM) &&
1868                i++ < 20) {
1869
1870                 if (i <= 5)
1871                         msleep(10);
1872                 else if (i <= 10)
1873                         msleep(500);
1874                 else
1875                         msleep(2500);
1876
1877                 if (i == 15) {
1878                                 /* Do post */
1879                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1880                         lpfc_sli_brdrestart(phba);
1881                 }
1882                 /* Read the HBA Host Status Register */
1883                 status = readl(phba->HSregaddr);
1884         }
1885
1886         /* Check to see if any errors occurred during init */
1887         if ((status & HS_FFERM) || (i >= 20)) {
1888                 phba->link_state = LPFC_HBA_ERROR;
1889                 retval = 1;
1890         }
1891
1892         return retval;
1893 }
1894
1895 #define BARRIER_TEST_PATTERN (0xdeadbeef)
1896
1897 void lpfc_reset_barrier(struct lpfc_hba *phba)
1898 {
1899         uint32_t __iomem *resp_buf;
1900         uint32_t __iomem *mbox_buf;
1901         volatile uint32_t mbox;
1902         uint32_t hc_copy;
1903         int  i;
1904         uint8_t hdrtype;
1905
1906         pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
1907         if (hdrtype != 0x80 ||
1908             (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
1909              FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
1910                 return;
1911
1912         /*
1913          * Tell the other part of the chip to suspend temporarily all
1914          * its DMA activity.
1915          */
1916         resp_buf = phba->MBslimaddr;
1917
1918         /* Disable the error attention */
1919         hc_copy = readl(phba->HCregaddr);
1920         writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
1921         readl(phba->HCregaddr); /* flush */
1922         phba->link_flag |= LS_IGNORE_ERATT;
1923
1924         if (readl(phba->HAregaddr) & HA_ERATT) {
1925                 /* Clear Chip error bit */
1926                 writel(HA_ERATT, phba->HAregaddr);
1927                 phba->pport->stopped = 1;
1928         }
1929
1930         mbox = 0;
1931         ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD;
1932         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP;
1933
1934         writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
1935         mbox_buf = phba->MBslimaddr;
1936         writel(mbox, mbox_buf);
1937
1938         for (i = 0;
1939              readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++)
1940                 mdelay(1);
1941
1942         if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) {
1943                 if (phba->sli.sli_flag & LPFC_SLI2_ACTIVE ||
1944                     phba->pport->stopped)
1945                         goto restore_hc;
1946                 else
1947                         goto clear_errat;
1948         }
1949
1950         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST;
1951         for (i = 0; readl(resp_buf) != mbox &&  i < 500; i++)
1952                 mdelay(1);
1953
1954 clear_errat:
1955
1956         while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500)
1957                 mdelay(1);
1958
1959         if (readl(phba->HAregaddr) & HA_ERATT) {
1960                 writel(HA_ERATT, phba->HAregaddr);
1961                 phba->pport->stopped = 1;
1962         }
1963
1964 restore_hc:
1965         phba->link_flag &= ~LS_IGNORE_ERATT;
1966         writel(hc_copy, phba->HCregaddr);
1967         readl(phba->HCregaddr); /* flush */
1968 }
1969
1970 int
1971 lpfc_sli_brdkill(struct lpfc_hba *phba)
1972 {
1973         struct lpfc_sli *psli;
1974         LPFC_MBOXQ_t *pmb;
1975         uint32_t status;
1976         uint32_t ha_copy;
1977         int retval;
1978         int i = 0;
1979
1980         psli = &phba->sli;
1981
1982         /* Kill HBA */
1983         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1984                         "0329 Kill HBA Data: x%x x%x\n",
1985                         phba->pport->port_state, psli->sli_flag);
1986
1987         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1988         if (!pmb)
1989                 return 1;
1990
1991         /* Disable the error attention */
1992         spin_lock_irq(&phba->hbalock);
1993         status = readl(phba->HCregaddr);
1994         status &= ~HC_ERINT_ENA;
1995         writel(status, phba->HCregaddr);
1996         readl(phba->HCregaddr); /* flush */
1997         phba->link_flag |= LS_IGNORE_ERATT;
1998         spin_unlock_irq(&phba->hbalock);
1999
2000         lpfc_kill_board(phba, pmb);
2001         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2002         retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
2003
2004         if (retval != MBX_SUCCESS) {
2005                 if (retval != MBX_BUSY)
2006                         mempool_free(pmb, phba->mbox_mem_pool);
2007                 spin_lock_irq(&phba->hbalock);
2008                 phba->link_flag &= ~LS_IGNORE_ERATT;
2009                 spin_unlock_irq(&phba->hbalock);
2010                 return 1;
2011         }
2012
2013         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
2014
2015         mempool_free(pmb, phba->mbox_mem_pool);
2016
2017         /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
2018          * attention every 100ms for 3 seconds. If we don't get ERATT after
2019          * 3 seconds we still set HBA_ERROR state because the status of the
2020          * board is now undefined.
2021          */
2022         ha_copy = readl(phba->HAregaddr);
2023
2024         while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
2025                 mdelay(100);
2026                 ha_copy = readl(phba->HAregaddr);
2027         }
2028
2029         del_timer_sync(&psli->mbox_tmo);
2030         if (ha_copy & HA_ERATT) {
2031                 writel(HA_ERATT, phba->HAregaddr);
2032                 phba->pport->stopped = 1;
2033         }
2034         spin_lock_irq(&phba->hbalock);
2035         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2036         phba->link_flag &= ~LS_IGNORE_ERATT;
2037         spin_unlock_irq(&phba->hbalock);
2038
2039         psli->mbox_active = NULL;
2040         lpfc_hba_down_post(phba);
2041         phba->link_state = LPFC_HBA_ERROR;
2042
2043         return ha_copy & HA_ERATT ? 0 : 1;
2044 }
2045
2046 int
2047 lpfc_sli_brdreset(struct lpfc_hba *phba)
2048 {
2049         struct lpfc_sli *psli;
2050         struct lpfc_sli_ring *pring;
2051         uint16_t cfg_value;
2052         int i;
2053
2054         psli = &phba->sli;
2055
2056         /* Reset HBA */
2057         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2058                         "0325 Reset HBA Data: x%x x%x\n",
2059                         phba->pport->port_state, psli->sli_flag);
2060
2061         /* perform board reset */
2062         phba->fc_eventTag = 0;
2063         phba->pport->fc_myDID = 0;
2064         phba->pport->fc_prevDID = 0;
2065
2066         /* Turn off parity checking and serr during the physical reset */
2067         pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
2068         pci_write_config_word(phba->pcidev, PCI_COMMAND,
2069                               (cfg_value &
2070                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
2071
2072         psli->sli_flag &= ~(LPFC_SLI2_ACTIVE | LPFC_PROCESS_LA);
2073         /* Now toggle INITFF bit in the Host Control Register */
2074         writel(HC_INITFF, phba->HCregaddr);
2075         mdelay(1);
2076         readl(phba->HCregaddr); /* flush */
2077         writel(0, phba->HCregaddr);
2078         readl(phba->HCregaddr); /* flush */
2079
2080         /* Restore PCI cmd register */
2081         pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
2082
2083         /* Initialize relevant SLI info */
2084         for (i = 0; i < psli->num_rings; i++) {
2085                 pring = &psli->ring[i];
2086                 pring->flag = 0;
2087                 pring->rspidx = 0;
2088                 pring->next_cmdidx  = 0;
2089                 pring->local_getidx = 0;
2090                 pring->cmdidx = 0;
2091                 pring->missbufcnt = 0;
2092         }
2093
2094         phba->link_state = LPFC_WARM_START;
2095         return 0;
2096 }
2097
2098 int
2099 lpfc_sli_brdrestart(struct lpfc_hba *phba)
2100 {
2101         MAILBOX_t *mb;
2102         struct lpfc_sli *psli;
2103         uint16_t skip_post;
2104         volatile uint32_t word0;
2105         void __iomem *to_slim;
2106
2107         spin_lock_irq(&phba->hbalock);
2108
2109         psli = &phba->sli;
2110
2111         /* Restart HBA */
2112         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2113                         "0337 Restart HBA Data: x%x x%x\n",
2114                         phba->pport->port_state, psli->sli_flag);
2115
2116         word0 = 0;
2117         mb = (MAILBOX_t *) &word0;
2118         mb->mbxCommand = MBX_RESTART;
2119         mb->mbxHc = 1;
2120
2121         lpfc_reset_barrier(phba);
2122
2123         to_slim = phba->MBslimaddr;
2124         writel(*(uint32_t *) mb, to_slim);
2125         readl(to_slim); /* flush */
2126
2127         /* Only skip post after fc_ffinit is completed */
2128         if (phba->pport->port_state) {
2129                 skip_post = 1;
2130                 word0 = 1;      /* This is really setting up word1 */
2131         } else {
2132                 skip_post = 0;
2133                 word0 = 0;      /* This is really setting up word1 */
2134         }
2135         to_slim = phba->MBslimaddr + sizeof (uint32_t);
2136         writel(*(uint32_t *) mb, to_slim);
2137         readl(to_slim); /* flush */
2138
2139         lpfc_sli_brdreset(phba);
2140         phba->pport->stopped = 0;
2141         phba->link_state = LPFC_INIT_START;
2142
2143         spin_unlock_irq(&phba->hbalock);
2144
2145         memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
2146         psli->stats_start = get_seconds();
2147
2148         if (skip_post)
2149                 mdelay(100);
2150         else
2151                 mdelay(2000);
2152
2153         lpfc_hba_down_post(phba);
2154
2155         return 0;
2156 }
2157
2158 static int
2159 lpfc_sli_chipset_init(struct lpfc_hba *phba)
2160 {
2161         uint32_t status, i = 0;
2162
2163         /* Read the HBA Host Status Register */
2164         status = readl(phba->HSregaddr);
2165
2166         /* Check status register to see what current state is */
2167         i = 0;
2168         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
2169
2170                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
2171                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
2172                  * 4.
2173                  */
2174                 if (i++ >= 20) {
2175                         /* Adapter failed to init, timeout, status reg
2176                            <status> */
2177                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2178                                         "0436 Adapter failed to init, "
2179                                         "timeout, status reg x%x\n", status);
2180                         phba->link_state = LPFC_HBA_ERROR;
2181                         return -ETIMEDOUT;
2182                 }
2183
2184                 /* Check to see if any errors occurred during init */
2185                 if (status & HS_FFERM) {
2186                         /* ERROR: During chipset initialization */
2187                         /* Adapter failed to init, chipset, status reg
2188                            <status> */
2189                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2190                                         "0437 Adapter failed to init, "
2191                                         "chipset, status reg x%x\n", status);
2192                         phba->link_state = LPFC_HBA_ERROR;
2193                         return -EIO;
2194                 }
2195
2196                 if (i <= 5) {
2197                         msleep(10);
2198                 } else if (i <= 10) {
2199                         msleep(500);
2200                 } else {
2201                         msleep(2500);
2202                 }
2203
2204                 if (i == 15) {
2205                                 /* Do post */
2206                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2207                         lpfc_sli_brdrestart(phba);
2208                 }
2209                 /* Read the HBA Host Status Register */
2210                 status = readl(phba->HSregaddr);
2211         }
2212
2213         /* Check to see if any errors occurred during init */
2214         if (status & HS_FFERM) {
2215                 /* ERROR: During chipset initialization */
2216                 /* Adapter failed to init, chipset, status reg <status> */
2217                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2218                                 "0438 Adapter failed to init, chipset, "
2219                                 "status reg x%x\n", status);
2220                 phba->link_state = LPFC_HBA_ERROR;
2221                 return -EIO;
2222         }
2223
2224         /* Clear all interrupt enable conditions */
2225         writel(0, phba->HCregaddr);
2226         readl(phba->HCregaddr); /* flush */
2227
2228         /* setup host attn register */
2229         writel(0xffffffff, phba->HAregaddr);
2230         readl(phba->HAregaddr); /* flush */
2231         return 0;
2232 }
2233
2234 int
2235 lpfc_sli_hbq_count(void)
2236 {
2237         return ARRAY_SIZE(lpfc_hbq_defs);
2238 }
2239
2240 static int
2241 lpfc_sli_hbq_entry_count(void)
2242 {
2243         int  hbq_count = lpfc_sli_hbq_count();
2244         int  count = 0;
2245         int  i;
2246
2247         for (i = 0; i < hbq_count; ++i)
2248                 count += lpfc_hbq_defs[i]->entry_count;
2249         return count;
2250 }
2251
2252 int
2253 lpfc_sli_hbq_size(void)
2254 {
2255         return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry);
2256 }
2257
2258 static int
2259 lpfc_sli_hbq_setup(struct lpfc_hba *phba)
2260 {
2261         int  hbq_count = lpfc_sli_hbq_count();
2262         LPFC_MBOXQ_t *pmb;
2263         MAILBOX_t *pmbox;
2264         uint32_t hbqno;
2265         uint32_t hbq_entry_index;
2266
2267                                 /* Get a Mailbox buffer to setup mailbox
2268                                  * commands for HBA initialization
2269                                  */
2270         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2271
2272         if (!pmb)
2273                 return -ENOMEM;
2274
2275         pmbox = &pmb->mb;
2276
2277         /* Initialize the struct lpfc_sli_hbq structure for each hbq */
2278         phba->link_state = LPFC_INIT_MBX_CMDS;
2279
2280         hbq_entry_index = 0;
2281         for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
2282                 phba->hbqs[hbqno].next_hbqPutIdx = 0;
2283                 phba->hbqs[hbqno].hbqPutIdx      = 0;
2284                 phba->hbqs[hbqno].local_hbqGetIdx   = 0;
2285                 phba->hbqs[hbqno].entry_count =
2286                         lpfc_hbq_defs[hbqno]->entry_count;
2287                 lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno],
2288                         hbq_entry_index, pmb);
2289                 hbq_entry_index += phba->hbqs[hbqno].entry_count;
2290
2291                 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
2292                         /* Adapter failed to init, mbxCmd <cmd> CFG_RING,
2293                            mbxStatus <status>, ring <num> */
2294
2295                         lpfc_printf_log(phba, KERN_ERR,
2296                                         LOG_SLI | LOG_VPORT,
2297                                         "1805 Adapter failed to init. "
2298                                         "Data: x%x x%x x%x\n",
2299                                         pmbox->mbxCommand,
2300                                         pmbox->mbxStatus, hbqno);
2301
2302                         phba->link_state = LPFC_HBA_ERROR;
2303                         mempool_free(pmb, phba->mbox_mem_pool);
2304                         return ENXIO;
2305                 }
2306         }
2307         phba->hbq_count = hbq_count;
2308
2309         mempool_free(pmb, phba->mbox_mem_pool);
2310
2311         /* Initially populate or replenish the HBQs */
2312         for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
2313                 if (lpfc_sli_hbqbuf_init_hbqs(phba, hbqno))
2314                         return -ENOMEM;
2315         }
2316         return 0;
2317 }
2318
2319 static int
2320 lpfc_do_config_port(struct lpfc_hba *phba, int sli_mode)
2321 {
2322         LPFC_MBOXQ_t *pmb;
2323         uint32_t resetcount = 0, rc = 0, done = 0;
2324
2325         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2326         if (!pmb) {
2327                 phba->link_state = LPFC_HBA_ERROR;
2328                 return -ENOMEM;
2329         }
2330
2331         phba->sli_rev = sli_mode;
2332         while (resetcount < 2 && !done) {
2333                 spin_lock_irq(&phba->hbalock);
2334                 phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2335                 spin_unlock_irq(&phba->hbalock);
2336                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2337                 lpfc_sli_brdrestart(phba);
2338                 msleep(2500);
2339                 rc = lpfc_sli_chipset_init(phba);
2340                 if (rc)
2341                         break;
2342
2343                 spin_lock_irq(&phba->hbalock);
2344                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2345                 spin_unlock_irq(&phba->hbalock);
2346                 resetcount++;
2347
2348                 /* Call pre CONFIG_PORT mailbox command initialization.  A
2349                  * value of 0 means the call was successful.  Any other
2350                  * nonzero value is a failure, but if ERESTART is returned,
2351                  * the driver may reset the HBA and try again.
2352                  */
2353                 rc = lpfc_config_port_prep(phba);
2354                 if (rc == -ERESTART) {
2355                         phba->link_state = LPFC_LINK_UNKNOWN;
2356                         continue;
2357                 } else if (rc) {
2358                         break;
2359                 }
2360
2361                 phba->link_state = LPFC_INIT_MBX_CMDS;
2362                 lpfc_config_port(phba, pmb);
2363                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
2364                 if (rc != MBX_SUCCESS) {
2365                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2366                                 "0442 Adapter failed to init, mbxCmd x%x "
2367                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
2368                                 pmb->mb.mbxCommand, pmb->mb.mbxStatus, 0);
2369                         spin_lock_irq(&phba->hbalock);
2370                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
2371                         spin_unlock_irq(&phba->hbalock);
2372                         rc = -ENXIO;
2373                 } else {
2374                         done = 1;
2375                         phba->max_vpi = (phba->max_vpi &&
2376                                          pmb->mb.un.varCfgPort.gmv) != 0
2377                                 ? pmb->mb.un.varCfgPort.max_vpi
2378                                 : 0;
2379                 }
2380         }
2381
2382         if (!done) {
2383                 rc = -EINVAL;
2384                 goto do_prep_failed;
2385         }
2386
2387         if ((pmb->mb.un.varCfgPort.sli_mode == 3) &&
2388                 (!pmb->mb.un.varCfgPort.cMA)) {
2389                 rc = -ENXIO;
2390                 goto do_prep_failed;
2391         }
2392         return rc;
2393
2394 do_prep_failed:
2395         mempool_free(pmb, phba->mbox_mem_pool);
2396         return rc;
2397 }
2398
2399 int
2400 lpfc_sli_hba_setup(struct lpfc_hba *phba)
2401 {
2402         uint32_t rc;
2403         int  mode = 3;
2404
2405         switch (lpfc_sli_mode) {
2406         case 2:
2407                 if (phba->cfg_enable_npiv) {
2408                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2409                                 "1824 NPIV enabled: Override lpfc_sli_mode "
2410                                 "parameter (%d) to auto (0).\n",
2411                                 lpfc_sli_mode);
2412                         break;
2413                 }
2414                 mode = 2;
2415                 break;
2416         case 0:
2417         case 3:
2418                 break;
2419         default:
2420                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2421                                 "1819 Unrecognized lpfc_sli_mode "
2422                                 "parameter: %d.\n", lpfc_sli_mode);
2423
2424                 break;
2425         }
2426
2427         rc = lpfc_do_config_port(phba, mode);
2428         if (rc && lpfc_sli_mode == 3)
2429                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2430                                 "1820 Unable to select SLI-3.  "
2431                                 "Not supported by adapter.\n");
2432         if (rc && mode != 2)
2433                 rc = lpfc_do_config_port(phba, 2);
2434         if (rc)
2435                 goto lpfc_sli_hba_setup_error;
2436
2437         if (phba->sli_rev == 3) {
2438                 phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE;
2439                 phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE;
2440                 phba->sli3_options |= LPFC_SLI3_ENABLED;
2441                 phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
2442
2443         } else {
2444                 phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE;
2445                 phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE;
2446                 phba->sli3_options = 0;
2447         }
2448
2449         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2450                         "0444 Firmware in SLI %x mode. Max_vpi %d\n",
2451                         phba->sli_rev, phba->max_vpi);
2452         rc = lpfc_sli_ring_map(phba);
2453
2454         if (rc)
2455                 goto lpfc_sli_hba_setup_error;
2456
2457                                 /* Init HBQs */
2458
2459         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
2460                 rc = lpfc_sli_hbq_setup(phba);
2461                 if (rc)
2462                         goto lpfc_sli_hba_setup_error;
2463         }
2464
2465         phba->sli.sli_flag |= LPFC_PROCESS_LA;
2466
2467         rc = lpfc_config_port_post(phba);
2468         if (rc)
2469                 goto lpfc_sli_hba_setup_error;
2470
2471         return rc;
2472
2473 lpfc_sli_hba_setup_error:
2474         phba->link_state = LPFC_HBA_ERROR;
2475         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2476                         "0445 Firmware initialization failed\n");
2477         return rc;
2478 }
2479
2480 /*! lpfc_mbox_timeout
2481  *
2482  * \pre
2483  * \post
2484  * \param hba Pointer to per struct lpfc_hba structure
2485  * \param l1  Pointer to the driver's mailbox queue.
2486  * \return
2487  *   void
2488  *
2489  * \b Description:
2490  *
2491  * This routine handles mailbox timeout events at timer interrupt context.
2492  */
2493 void
2494 lpfc_mbox_timeout(unsigned long ptr)
2495 {
2496         struct lpfc_hba  *phba = (struct lpfc_hba *) ptr;
2497         unsigned long iflag;
2498         uint32_t tmo_posted;
2499
2500         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
2501         tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO;
2502         if (!tmo_posted)
2503                 phba->pport->work_port_events |= WORKER_MBOX_TMO;
2504         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
2505
2506         if (!tmo_posted) {
2507                 spin_lock_irqsave(&phba->hbalock, iflag);
2508                 if (phba->work_wait)
2509                         lpfc_worker_wake_up(phba);
2510                 spin_unlock_irqrestore(&phba->hbalock, iflag);
2511         }
2512 }
2513
2514 void
2515 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
2516 {
2517         LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
2518         MAILBOX_t *mb = &pmbox->mb;
2519         struct lpfc_sli *psli = &phba->sli;
2520         struct lpfc_sli_ring *pring;
2521
2522         if (!(phba->pport->work_port_events & WORKER_MBOX_TMO)) {
2523                 return;
2524         }
2525
2526         /* Mbox cmd <mbxCommand> timeout */
2527         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2528                         "0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
2529                         mb->mbxCommand,
2530                         phba->pport->port_state,
2531                         phba->sli.sli_flag,
2532                         phba->sli.mbox_active);
2533
2534         /* Setting state unknown so lpfc_sli_abort_iocb_ring
2535          * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing
2536          * it to fail all oustanding SCSI IO.
2537          */
2538         spin_lock_irq(&phba->pport->work_port_lock);
2539         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
2540         spin_unlock_irq(&phba->pport->work_port_lock);
2541         spin_lock_irq(&phba->hbalock);
2542         phba->link_state = LPFC_LINK_UNKNOWN;
2543         phba->pport->fc_flag |= FC_ESTABLISH_LINK;
2544         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
2545         spin_unlock_irq(&phba->hbalock);
2546
2547         pring = &psli->ring[psli->fcp_ring];
2548         lpfc_sli_abort_iocb_ring(phba, pring);
2549
2550         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2551                         "0345 Resetting board due to mailbox timeout\n");
2552         /*
2553          * lpfc_offline calls lpfc_sli_hba_down which will clean up
2554          * on oustanding mailbox commands.
2555          */
2556         lpfc_offline_prep(phba);
2557         lpfc_offline(phba);
2558         lpfc_sli_brdrestart(phba);
2559         if (lpfc_online(phba) == 0)             /* Initialize the HBA */
2560                 mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
2561         lpfc_unblock_mgmt_io(phba);
2562         return;
2563 }
2564
2565 int
2566 lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
2567 {
2568         MAILBOX_t *mb;
2569         struct lpfc_sli *psli = &phba->sli;
2570         uint32_t status, evtctr;
2571         uint32_t ha_copy;
2572         int i;
2573         unsigned long drvr_flag = 0;
2574         volatile uint32_t word0, ldata;
2575         void __iomem *to_slim;
2576
2577         if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
2578                 pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
2579                 if(!pmbox->vport) {
2580                         lpfc_printf_log(phba, KERN_ERR,
2581                                         LOG_MBOX | LOG_VPORT,
2582                                         "1806 Mbox x%x failed. No vport\n",
2583                                         pmbox->mb.mbxCommand);
2584                         dump_stack();
2585                         return MBXERR_ERROR;
2586                 }
2587         }
2588
2589
2590         /* If the PCI channel is in offline state, do not post mbox. */
2591         if (unlikely(pci_channel_offline(phba->pcidev)))
2592                 return MBX_NOT_FINISHED;
2593
2594         spin_lock_irqsave(&phba->hbalock, drvr_flag);
2595         psli = &phba->sli;
2596
2597
2598         mb = &pmbox->mb;
2599         status = MBX_SUCCESS;
2600
2601         if (phba->link_state == LPFC_HBA_ERROR) {
2602                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2603
2604                 /* Mbox command <mbxCommand> cannot issue */
2605                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag)
2606                 return MBX_NOT_FINISHED;
2607         }
2608
2609         if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
2610             !(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
2611                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2612                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag)
2613                 return MBX_NOT_FINISHED;
2614         }
2615
2616         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
2617                 /* Polling for a mbox command when another one is already active
2618                  * is not allowed in SLI. Also, the driver must have established
2619                  * SLI2 mode to queue and process multiple mbox commands.
2620                  */
2621
2622                 if (flag & MBX_POLL) {
2623                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2624
2625                         /* Mbox command <mbxCommand> cannot issue */
2626                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2627                         return MBX_NOT_FINISHED;
2628                 }
2629
2630                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
2631                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2632                         /* Mbox command <mbxCommand> cannot issue */
2633                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2634                         return MBX_NOT_FINISHED;
2635                 }
2636
2637                 /* Another mailbox command is still being processed, queue this
2638                  * command to be processed later.
2639                  */
2640                 lpfc_mbox_put(phba, pmbox);
2641
2642                 /* Mbox cmd issue - BUSY */
2643                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
2644                                 "(%d):0308 Mbox cmd issue - BUSY Data: "
2645                                 "x%x x%x x%x x%x\n",
2646                                 pmbox->vport ? pmbox->vport->vpi : 0xffffff,
2647                                 mb->mbxCommand, phba->pport->port_state,
2648                                 psli->sli_flag, flag);
2649
2650                 psli->slistat.mbox_busy++;
2651                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2652
2653                 if (pmbox->vport) {
2654                         lpfc_debugfs_disc_trc(pmbox->vport,
2655                                 LPFC_DISC_TRC_MBOX_VPORT,
2656                                 "MBOX Bsy vport:  cmd:x%x mb:x%x x%x",
2657                                 (uint32_t)mb->mbxCommand,
2658                                 mb->un.varWords[0], mb->un.varWords[1]);
2659                 }
2660                 else {
2661                         lpfc_debugfs_disc_trc(phba->pport,
2662                                 LPFC_DISC_TRC_MBOX,
2663                                 "MBOX Bsy:        cmd:x%x mb:x%x x%x",
2664                                 (uint32_t)mb->mbxCommand,
2665                                 mb->un.varWords[0], mb->un.varWords[1]);
2666                 }
2667
2668                 return MBX_BUSY;
2669         }
2670
2671         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2672
2673         /* If we are not polling, we MUST be in SLI2 mode */
2674         if (flag != MBX_POLL) {
2675                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE) &&
2676                     (mb->mbxCommand != MBX_KILL_BOARD)) {
2677                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2678                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2679                         /* Mbox command <mbxCommand> cannot issue */
2680                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2681                         return MBX_NOT_FINISHED;
2682                 }
2683                 /* timeout active mbox command */
2684                 mod_timer(&psli->mbox_tmo, (jiffies +
2685                                (HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand))));
2686         }
2687
2688         /* Mailbox cmd <cmd> issue */
2689         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
2690                         "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x "
2691                         "x%x\n",
2692                         pmbox->vport ? pmbox->vport->vpi : 0,
2693                         mb->mbxCommand, phba->pport->port_state,
2694                         psli->sli_flag, flag);
2695
2696         if (mb->mbxCommand != MBX_HEARTBEAT) {
2697                 if (pmbox->vport) {
2698                         lpfc_debugfs_disc_trc(pmbox->vport,
2699                                 LPFC_DISC_TRC_MBOX_VPORT,
2700                                 "MBOX Send vport: cmd:x%x mb:x%x x%x",
2701                                 (uint32_t)mb->mbxCommand,
2702                                 mb->un.varWords[0], mb->un.varWords[1]);
2703                 }
2704                 else {
2705                         lpfc_debugfs_disc_trc(phba->pport,
2706                                 LPFC_DISC_TRC_MBOX,
2707                                 "MBOX Send:       cmd:x%x mb:x%x x%x",
2708                                 (uint32_t)mb->mbxCommand,
2709                                 mb->un.varWords[0], mb->un.varWords[1]);
2710                 }
2711         }
2712
2713         psli->slistat.mbox_cmd++;
2714         evtctr = psli->slistat.mbox_event;
2715
2716         /* next set own bit for the adapter and copy over command word */
2717         mb->mbxOwner = OWN_CHIP;
2718
2719         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2720                 /* First copy command data to host SLIM area */
2721                 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
2722         } else {
2723                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2724                         /* copy command data into host mbox for cmpl */
2725                         lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
2726                                               MAILBOX_CMD_SIZE);
2727                 }
2728
2729                 /* First copy mbox command data to HBA SLIM, skip past first
2730                    word */
2731                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
2732                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
2733                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
2734
2735                 /* Next copy over first word, with mbxOwner set */
2736                 ldata = *((volatile uint32_t *)mb);
2737                 to_slim = phba->MBslimaddr;
2738                 writel(ldata, to_slim);
2739                 readl(to_slim); /* flush */
2740
2741                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2742                         /* switch over to host mailbox */
2743                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
2744                 }
2745         }
2746
2747         wmb();
2748         /* interrupt board to doit right away */
2749         writel(CA_MBATT, phba->CAregaddr);
2750         readl(phba->CAregaddr); /* flush */
2751
2752         switch (flag) {
2753         case MBX_NOWAIT:
2754                 /* Don't wait for it to finish, just return */
2755                 psli->mbox_active = pmbox;
2756                 break;
2757
2758         case MBX_POLL:
2759                 psli->mbox_active = NULL;
2760                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2761                         /* First read mbox status word */
2762                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
2763                         word0 = le32_to_cpu(word0);
2764                 } else {
2765                         /* First read mbox status word */
2766                         word0 = readl(phba->MBslimaddr);
2767                 }
2768
2769                 /* Read the HBA Host Attention Register */
2770                 ha_copy = readl(phba->HAregaddr);
2771
2772                 i = lpfc_mbox_tmo_val(phba, mb->mbxCommand);
2773                 i *= 1000; /* Convert to ms */
2774
2775                 /* Wait for command to complete */
2776                 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
2777                        (!(ha_copy & HA_MBATT) &&
2778                         (phba->link_state > LPFC_WARM_START))) {
2779                         if (i-- <= 0) {
2780                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2781                                 spin_unlock_irqrestore(&phba->hbalock,
2782                                                        drvr_flag);
2783                                 return MBX_NOT_FINISHED;
2784                         }
2785
2786                         /* Check if we took a mbox interrupt while we were
2787                            polling */
2788                         if (((word0 & OWN_CHIP) != OWN_CHIP)
2789                             && (evtctr != psli->slistat.mbox_event))
2790                                 break;
2791
2792                         spin_unlock_irqrestore(&phba->hbalock,
2793                                                drvr_flag);
2794
2795                         msleep(1);
2796
2797                         spin_lock_irqsave(&phba->hbalock, drvr_flag);
2798
2799                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2800                                 /* First copy command data */
2801                                 word0 = *((volatile uint32_t *)
2802                                                 &phba->slim2p->mbx);
2803                                 word0 = le32_to_cpu(word0);
2804                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2805                                         MAILBOX_t *slimmb;
2806                                         volatile uint32_t slimword0;
2807                                         /* Check real SLIM for any errors */
2808                                         slimword0 = readl(phba->MBslimaddr);
2809                                         slimmb = (MAILBOX_t *) & slimword0;
2810                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
2811                                             && slimmb->mbxStatus) {
2812                                                 psli->sli_flag &=
2813                                                     ~LPFC_SLI2_ACTIVE;
2814                                                 word0 = slimword0;
2815                                         }
2816                                 }
2817                         } else {
2818                                 /* First copy command data */
2819                                 word0 = readl(phba->MBslimaddr);
2820                         }
2821                         /* Read the HBA Host Attention Register */
2822                         ha_copy = readl(phba->HAregaddr);
2823                 }
2824
2825                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2826                         /* copy results back to user */
2827                         lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
2828                                               MAILBOX_CMD_SIZE);
2829                 } else {
2830                         /* First copy command data */
2831                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2832                                                         MAILBOX_CMD_SIZE);
2833                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2834                                 pmbox->context2) {
2835                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
2836                                       phba->MBslimaddr + DMP_RSP_OFFSET,
2837                                                       mb->un.varDmp.word_cnt);
2838                         }
2839                 }
2840
2841                 writel(HA_MBATT, phba->HAregaddr);
2842                 readl(phba->HAregaddr); /* flush */
2843
2844                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2845                 status = mb->mbxStatus;
2846         }
2847
2848         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2849         return status;
2850 }
2851
2852 /*
2853  * Caller needs to hold lock.
2854  */
2855 static void
2856 __lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2857                     struct lpfc_iocbq *piocb)
2858 {
2859         /* Insert the caller's iocb in the txq tail for later processing. */
2860         list_add_tail(&piocb->list, &pring->txq);
2861         pring->txq_cnt++;
2862 }
2863
2864 static struct lpfc_iocbq *
2865 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2866                    struct lpfc_iocbq **piocb)
2867 {
2868         struct lpfc_iocbq * nextiocb;
2869
2870         nextiocb = lpfc_sli_ringtx_get(phba, pring);
2871         if (!nextiocb) {
2872                 nextiocb = *piocb;
2873                 *piocb = NULL;
2874         }
2875
2876         return nextiocb;
2877 }
2878
2879 /*
2880  * Lockless version of lpfc_sli_issue_iocb.
2881  */
2882 static int
2883 __lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2884                     struct lpfc_iocbq *piocb, uint32_t flag)
2885 {
2886         struct lpfc_iocbq *nextiocb;
2887         IOCB_t *iocb;
2888
2889         if (piocb->iocb_cmpl && (!piocb->vport) &&
2890            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
2891            (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
2892                 lpfc_printf_log(phba, KERN_ERR,
2893                                 LOG_SLI | LOG_VPORT,
2894                                 "1807 IOCB x%x failed. No vport\n",
2895                                 piocb->iocb.ulpCommand);
2896                 dump_stack();
2897                 return IOCB_ERROR;
2898         }
2899
2900
2901         /* If the PCI channel is in offline state, do not post iocbs. */
2902         if (unlikely(pci_channel_offline(phba->pcidev)))
2903                 return IOCB_ERROR;
2904
2905         /*
2906          * We should never get an IOCB if we are in a < LINK_DOWN state
2907          */
2908         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
2909                 return IOCB_ERROR;
2910
2911         /*
2912          * Check to see if we are blocking IOCB processing because of a
2913          * outstanding event.
2914          */
2915         if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
2916                 goto iocb_busy;
2917
2918         if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
2919                 /*
2920                  * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF
2921                  * can be issued if the link is not up.
2922                  */
2923                 switch (piocb->iocb.ulpCommand) {
2924                 case CMD_QUE_RING_BUF_CN:
2925                 case CMD_QUE_RING_BUF64_CN:
2926                         /*
2927                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2928                          * completion, iocb_cmpl MUST be 0.
2929                          */
2930                         if (piocb->iocb_cmpl)
2931                                 piocb->iocb_cmpl = NULL;
2932                         /*FALLTHROUGH*/
2933                 case CMD_CREATE_XRI_CR:
2934                 case CMD_CLOSE_XRI_CN:
2935                 case CMD_CLOSE_XRI_CX:
2936                         break;
2937                 default:
2938                         goto iocb_busy;
2939                 }
2940
2941         /*
2942          * For FCP commands, we must be in a state where we can process link
2943          * attention events.
2944          */
2945         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2946                             !(phba->sli.sli_flag & LPFC_PROCESS_LA))) {
2947                 goto iocb_busy;
2948         }
2949
2950         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2951                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2952                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2953
2954         if (iocb)
2955                 lpfc_sli_update_ring(phba, pring);
2956         else
2957                 lpfc_sli_update_full_ring(phba, pring);
2958
2959         if (!piocb)
2960                 return IOCB_SUCCESS;
2961
2962         goto out_busy;
2963
2964  iocb_busy:
2965         pring->stats.iocb_cmd_delay++;
2966
2967  out_busy:
2968
2969         if (!(flag & SLI_IOCB_RET_IOCB)) {
2970                 __lpfc_sli_ringtx_put(phba, pring, piocb);
2971                 return IOCB_SUCCESS;
2972         }
2973
2974         return IOCB_BUSY;
2975 }
2976
2977
2978 int
2979 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2980                     struct lpfc_iocbq *piocb, uint32_t flag)
2981 {
2982         unsigned long iflags;
2983         int rc;
2984
2985         spin_lock_irqsave(&phba->hbalock, iflags);
2986         rc = __lpfc_sli_issue_iocb(phba, pring, piocb, flag);
2987         spin_unlock_irqrestore(&phba->hbalock, iflags);
2988
2989         return rc;
2990 }
2991
2992 static int
2993 lpfc_extra_ring_setup( struct lpfc_hba *phba)
2994 {
2995         struct lpfc_sli *psli;
2996         struct lpfc_sli_ring *pring;
2997
2998         psli = &phba->sli;
2999
3000         /* Adjust cmd/rsp ring iocb entries more evenly */
3001
3002         /* Take some away from the FCP ring */
3003         pring = &psli->ring[psli->fcp_ring];
3004         pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3005         pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3006         pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3007         pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3008
3009         /* and give them to the extra ring */
3010         pring = &psli->ring[psli->extra_ring];
3011
3012         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3013         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3014         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3015         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3016
3017         /* Setup default profile for this ring */
3018         pring->iotag_max = 4096;
3019         pring->num_mask = 1;
3020         pring->prt[0].profile = 0;      /* Mask 0 */
3021         pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
3022         pring->prt[0].type = phba->cfg_multi_ring_type;
3023         pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
3024         return 0;
3025 }
3026
3027 static void
3028 lpfc_sli_async_event_handler(struct lpfc_hba * phba,
3029         struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
3030 {
3031         IOCB_t *icmd;
3032         uint16_t evt_code;
3033         uint16_t temp;
3034         struct temp_event temp_event_data;
3035         struct Scsi_Host *shost;
3036
3037         icmd = &iocbq->iocb;
3038         evt_code = icmd->un.asyncstat.evt_code;
3039         temp = icmd->ulpContext;
3040
3041         if ((evt_code != ASYNC_TEMP_WARN) &&
3042                 (evt_code != ASYNC_TEMP_SAFE)) {
3043                 lpfc_printf_log(phba,
3044                         KERN_ERR,
3045                         LOG_SLI,
3046                         "0346 Ring %d handler: unexpected ASYNC_STATUS"
3047                         " evt_code 0x%x\n",
3048                         pring->ringno,
3049                         icmd->un.asyncstat.evt_code);
3050                 return;
3051         }
3052         temp_event_data.data = (uint32_t)temp;
3053         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
3054         if (evt_code == ASYNC_TEMP_WARN) {
3055                 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
3056                 lpfc_printf_log(phba,
3057                                 KERN_WARNING,
3058                                 LOG_TEMP,
3059                                 "0347 Adapter is very hot, please take "
3060                                 "corrective action. temperature : %d Celsius\n",
3061                                 temp);
3062         }
3063         if (evt_code == ASYNC_TEMP_SAFE) {
3064                 temp_event_data.event_code = LPFC_NORMAL_TEMP;
3065                 lpfc_printf_log(phba,
3066                                 KERN_INFO,
3067                                 LOG_TEMP,
3068                                 "0340 Adapter temperature is OK now. "
3069                                 "temperature : %d Celsius\n",
3070                                 temp);
3071         }
3072
3073         /* Send temperature change event to applications */
3074         shost = lpfc_shost_from_vport(phba->pport);
3075         fc_host_post_vendor_event(shost, fc_get_event_number(),
3076                 sizeof(temp_event_data), (char *) &temp_event_data,
3077                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
3078
3079 }
3080
3081
3082 int
3083 lpfc_sli_setup(struct lpfc_hba *phba)
3084 {
3085         int i, totiocbsize = 0;
3086         struct lpfc_sli *psli = &phba->sli;
3087         struct lpfc_sli_ring *pring;
3088
3089         psli->num_rings = MAX_CONFIGURED_RINGS;
3090         psli->sli_flag = 0;
3091         psli->fcp_ring = LPFC_FCP_RING;
3092         psli->next_ring = LPFC_FCP_NEXT_RING;
3093         psli->extra_ring = LPFC_EXTRA_RING;
3094
3095         psli->iocbq_lookup = NULL;
3096         psli->iocbq_lookup_len = 0;
3097         psli->last_iotag = 0;
3098
3099         for (i = 0; i < psli->num_rings; i++) {
3100                 pring = &psli->ring[i];
3101                 switch (i) {
3102                 case LPFC_FCP_RING:     /* ring 0 - FCP */
3103                         /* numCiocb and numRiocb are used in config_port */
3104                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
3105                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
3106                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3107                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3108                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3109                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3110                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3111                                                         SLI3_IOCB_CMD_SIZE :
3112                                                         SLI2_IOCB_CMD_SIZE;
3113                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3114                                                         SLI3_IOCB_RSP_SIZE :
3115                                                         SLI2_IOCB_RSP_SIZE;
3116                         pring->iotag_ctr = 0;
3117                         pring->iotag_max =
3118                             (phba->cfg_hba_queue_depth * 2);
3119                         pring->fast_iotag = pring->iotag_max;
3120                         pring->num_mask = 0;
3121                         break;
3122                 case LPFC_EXTRA_RING:   /* ring 1 - EXTRA */
3123                         /* numCiocb and numRiocb are used in config_port */
3124                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
3125                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
3126                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3127                                                         SLI3_IOCB_CMD_SIZE :
3128                                                         SLI2_IOCB_CMD_SIZE;
3129                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3130                                                         SLI3_IOCB_RSP_SIZE :
3131                                                         SLI2_IOCB_RSP_SIZE;
3132                         pring->iotag_max = phba->cfg_hba_queue_depth;
3133                         pring->num_mask = 0;
3134                         break;
3135                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
3136                         /* numCiocb and numRiocb are used in config_port */
3137                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
3138                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
3139                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3140                                                         SLI3_IOCB_CMD_SIZE :
3141                                                         SLI2_IOCB_CMD_SIZE;
3142                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3143                                                         SLI3_IOCB_RSP_SIZE :
3144                                                         SLI2_IOCB_RSP_SIZE;
3145                         pring->fast_iotag = 0;
3146                         pring->iotag_ctr = 0;
3147                         pring->iotag_max = 4096;
3148                         pring->lpfc_sli_rcv_async_status =
3149                                 lpfc_sli_async_event_handler;
3150                         pring->num_mask = 4;
3151                         pring->prt[0].profile = 0;      /* Mask 0 */
3152                         pring->prt[0].rctl = FC_ELS_REQ;
3153                         pring->prt[0].type = FC_ELS_DATA;
3154                         pring->prt[0].lpfc_sli_rcv_unsol_event =
3155                             lpfc_els_unsol_event;
3156                         pring->prt[1].profile = 0;      /* Mask 1 */
3157                         pring->prt[1].rctl = FC_ELS_RSP;
3158                         pring->prt[1].type = FC_ELS_DATA;
3159                         pring->prt[1].lpfc_sli_rcv_unsol_event =
3160                             lpfc_els_unsol_event;
3161                         pring->prt[2].profile = 0;      /* Mask 2 */
3162                         /* NameServer Inquiry */
3163                         pring->prt[2].rctl = FC_UNSOL_CTL;
3164                         /* NameServer */
3165                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
3166                         pring->prt[2].lpfc_sli_rcv_unsol_event =
3167                             lpfc_ct_unsol_event;
3168                         pring->prt[3].profile = 0;      /* Mask 3 */
3169                         /* NameServer response */
3170                         pring->prt[3].rctl = FC_SOL_CTL;
3171                         /* NameServer */
3172                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
3173                         pring->prt[3].lpfc_sli_rcv_unsol_event =
3174                             lpfc_ct_unsol_event;
3175                         break;
3176                 }
3177                 totiocbsize += (pring->numCiocb * pring->sizeCiocb) +
3178                                 (pring->numRiocb * pring->sizeRiocb);
3179         }
3180         if (totiocbsize > MAX_SLIM_IOCB_SIZE) {
3181                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
3182                 printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in "
3183                        "SLI2 SLIM Data: x%x x%lx\n",
3184                        phba->brd_no, totiocbsize,
3185                        (unsigned long) MAX_SLIM_IOCB_SIZE);
3186         }
3187         if (phba->cfg_multi_ring_support == 2)
3188                 lpfc_extra_ring_setup(phba);
3189
3190         return 0;
3191 }
3192
3193 int
3194 lpfc_sli_queue_setup(struct lpfc_hba *phba)
3195 {
3196         struct lpfc_sli *psli;
3197         struct lpfc_sli_ring *pring;
3198         int i;
3199
3200         psli = &phba->sli;
3201         spin_lock_irq(&phba->hbalock);
3202         INIT_LIST_HEAD(&psli->mboxq);
3203         INIT_LIST_HEAD(&psli->mboxq_cmpl);
3204         /* Initialize list headers for txq and txcmplq as double linked lists */
3205         for (i = 0; i < psli->num_rings; i++) {
3206                 pring = &psli->ring[i];
3207                 pring->ringno = i;
3208                 pring->next_cmdidx  = 0;
3209                 pring->local_getidx = 0;
3210                 pring->cmdidx = 0;
3211                 INIT_LIST_HEAD(&pring->txq);
3212                 INIT_LIST_HEAD(&pring->txcmplq);
3213                 INIT_LIST_HEAD(&pring->iocb_continueq);
3214                 INIT_LIST_HEAD(&pring->postbufq);
3215         }
3216         spin_unlock_irq(&phba->hbalock);
3217         return 1;
3218 }
3219
3220 int
3221 lpfc_sli_host_down(struct lpfc_vport *vport)
3222 {
3223         LIST_HEAD(completions);
3224         struct lpfc_hba *phba = vport->phba;
3225         struct lpfc_sli *psli = &phba->sli;
3226         struct lpfc_sli_ring *pring;
3227         struct lpfc_iocbq *iocb, *next_iocb;
3228         int i;
3229         unsigned long flags = 0;
3230         uint16_t prev_pring_flag;
3231
3232         lpfc_cleanup_discovery_resources(vport);
3233
3234         spin_lock_irqsave(&phba->hbalock, flags);
3235         for (i = 0; i < psli->num_rings; i++) {
3236                 pring = &psli->ring[i];
3237                 prev_pring_flag = pring->flag;
3238                 if (pring->ringno == LPFC_ELS_RING) /* Only slow rings */
3239                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
3240                 /*
3241                  * Error everything on the txq since these iocbs have not been
3242                  * given to the FW yet.
3243                  */
3244                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3245                         if (iocb->vport != vport)
3246                                 continue;
3247                         list_move_tail(&iocb->list, &completions);
3248                         pring->txq_cnt--;
3249                 }
3250
3251                 /* Next issue ABTS for everything on the txcmplq */
3252                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
3253                                                                         list) {
3254                         if (iocb->vport != vport)
3255                                 continue;
3256                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3257                 }
3258
3259                 pring->flag = prev_pring_flag;
3260         }
3261
3262         spin_unlock_irqrestore(&phba->hbalock, flags);
3263
3264         while (!list_empty(&completions)) {
3265                 list_remove_head(&completions, iocb, struct lpfc_iocbq, list);
3266
3267                 if (!iocb->iocb_cmpl)
3268                         lpfc_sli_release_iocbq(phba, iocb);
3269                 else {
3270                         iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
3271                         iocb->iocb.un.ulpWord[4] = IOERR_SLI_DOWN;
3272                         (iocb->iocb_cmpl) (phba, iocb, iocb);
3273                 }
3274         }
3275         return 1;
3276 }
3277
3278 int
3279 lpfc_sli_hba_down(struct lpfc_hba *phba)
3280 {
3281         LIST_HEAD(completions);
3282         struct lpfc_sli *psli = &phba->sli;
3283         struct lpfc_sli_ring *pring;
3284         LPFC_MBOXQ_t *pmb;
3285         struct lpfc_iocbq *iocb;
3286         IOCB_t *cmd = NULL;
3287         int i;
3288         unsigned long flags = 0;
3289
3290         lpfc_hba_down_prep(phba);
3291
3292         lpfc_fabric_abort_hba(phba);
3293
3294         spin_lock_irqsave(&phba->hbalock, flags);
3295         for (i = 0; i < psli->num_rings; i++) {
3296                 pring = &psli->ring[i];
3297                 if (pring->ringno == LPFC_ELS_RING) /* Only slow rings */
3298                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
3299
3300                 /*
3301                  * Error everything on the txq since these iocbs have not been
3302                  * given to the FW yet.
3303                  */
3304                 list_splice_init(&pring->txq, &completions);
3305                 pring->txq_cnt = 0;
3306
3307         }
3308         spin_unlock_irqrestore(&phba->hbalock, flags);
3309
3310         while (!list_empty(&completions)) {
3311                 list_remove_head(&completions, iocb, struct lpfc_iocbq, list);
3312                 cmd = &iocb->iocb;
3313
3314                 if (!iocb->iocb_cmpl)
3315                         lpfc_sli_release_iocbq(phba, iocb);
3316                 else {
3317                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3318                         cmd->un.ulpWord[4] = IOERR_SLI_DOWN;
3319                         (iocb->iocb_cmpl) (phba, iocb, iocb);
3320                 }
3321         }
3322
3323         /* Return any active mbox cmds */
3324         del_timer_sync(&psli->mbox_tmo);
3325         spin_lock_irqsave(&phba->hbalock, flags);
3326
3327         spin_lock(&phba->pport->work_port_lock);
3328         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
3329         spin_unlock(&phba->pport->work_port_lock);
3330
3331         if (psli->mbox_active) {
3332                 list_add_tail(&psli->mbox_active->list, &completions);
3333                 psli->mbox_active = NULL;
3334                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
3335         }
3336
3337         /* Return any pending or completed mbox cmds */
3338         list_splice_init(&phba->sli.mboxq, &completions);
3339         list_splice_init(&phba->sli.mboxq_cmpl, &completions);
3340         INIT_LIST_HEAD(&psli->mboxq);
3341         INIT_LIST_HEAD(&psli->mboxq_cmpl);
3342
3343         spin_unlock_irqrestore(&phba->hbalock, flags);
3344
3345         while (!list_empty(&completions)) {
3346                 list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
3347                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
3348                 if (pmb->mbox_cmpl) {
3349                         pmb->mbox_cmpl(phba,pmb);
3350                 }
3351         }
3352         return 1;
3353 }
3354
3355 void
3356 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
3357 {
3358         uint32_t *src = srcp;
3359         uint32_t *dest = destp;
3360         uint32_t ldata;
3361         int i;
3362
3363         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
3364                 ldata = *src;
3365                 ldata = le32_to_cpu(ldata);
3366                 *dest = ldata;
3367                 src++;
3368                 dest++;
3369         }
3370 }
3371
3372 int
3373 lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3374                          struct lpfc_dmabuf *mp)
3375 {
3376         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
3377            later */
3378         spin_lock_irq(&phba->hbalock);
3379         list_add_tail(&mp->list, &pring->postbufq);
3380         pring->postbufq_cnt++;
3381         spin_unlock_irq(&phba->hbalock);
3382         return 0;
3383 }
3384
3385 uint32_t
3386 lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
3387 {
3388         spin_lock_irq(&phba->hbalock);
3389         phba->buffer_tag_count++;
3390         /*
3391          * Always set the QUE_BUFTAG_BIT to distiguish between
3392          * a tag assigned by HBQ.
3393          */
3394         phba->buffer_tag_count |= QUE_BUFTAG_BIT;
3395         spin_unlock_irq(&phba->hbalock);
3396         return phba->buffer_tag_count;
3397 }
3398
3399 struct lpfc_dmabuf *
3400 lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3401                         uint32_t tag)
3402 {
3403         struct lpfc_dmabuf *mp, *next_mp;
3404         struct list_head *slp = &pring->postbufq;
3405
3406         /* Search postbufq, from the begining, looking for a match on tag */
3407         spin_lock_irq(&phba->hbalock);
3408         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
3409                 if (mp->buffer_tag == tag) {
3410                         list_del_init(&mp->list);
3411                         pring->postbufq_cnt--;
3412                         spin_unlock_irq(&phba->hbalock);
3413                         return mp;
3414                 }
3415         }
3416
3417         spin_unlock_irq(&phba->hbalock);
3418         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3419                         "0410 Cannot find virtual addr for buffer tag on "
3420                         "ring %d Data x%lx x%p x%p x%x\n",
3421                         pring->ringno, (unsigned long) tag,
3422                         slp->next, slp->prev, pring->postbufq_cnt);
3423
3424         return NULL;
3425 }
3426
3427 struct lpfc_dmabuf *
3428 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3429                          dma_addr_t phys)
3430 {
3431         struct lpfc_dmabuf *mp, *next_mp;
3432         struct list_head *slp = &pring->postbufq;
3433
3434         /* Search postbufq, from the begining, looking for a match on phys */
3435         spin_lock_irq(&phba->hbalock);
3436         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
3437                 if (mp->phys == phys) {
3438                         list_del_init(&mp->list);
3439                         pring->postbufq_cnt--;
3440                         spin_unlock_irq(&phba->hbalock);
3441                         return mp;
3442                 }
3443         }
3444
3445         spin_unlock_irq(&phba->hbalock);
3446         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3447                         "0410 Cannot find virtual addr for mapped buf on "
3448                         "ring %d Data x%llx x%p x%p x%x\n",
3449                         pring->ringno, (unsigned long long)phys,
3450                         slp->next, slp->prev, pring->postbufq_cnt);
3451         return NULL;
3452 }
3453
3454 static void
3455 lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3456                         struct lpfc_iocbq *rspiocb)
3457 {
3458         IOCB_t *irsp = &rspiocb->iocb;
3459         uint16_t abort_iotag, abort_context;
3460         struct lpfc_iocbq *abort_iocb;
3461         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
3462
3463         abort_iocb = NULL;
3464
3465         if (irsp->ulpStatus) {
3466                 abort_context = cmdiocb->iocb.un.acxri.abortContextTag;
3467                 abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag;
3468
3469                 spin_lock_irq(&phba->hbalock);
3470                 if (abort_iotag != 0 && abort_iotag <= phba->sli.last_iotag)
3471                         abort_iocb = phba->sli.iocbq_lookup[abort_iotag];
3472
3473                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_SLI,
3474                                 "0327 Cannot abort els iocb %p "
3475                                 "with tag %x context %x, abort status %x, "
3476                                 "abort code %x\n",
3477                                 abort_iocb, abort_iotag, abort_context,
3478                                 irsp->ulpStatus, irsp->un.ulpWord[4]);
3479
3480                 /*
3481                  * make sure we have the right iocbq before taking it
3482                  * off the txcmplq and try to call completion routine.
3483                  */
3484                 if (!abort_iocb ||
3485                     abort_iocb->iocb.ulpContext != abort_context ||
3486                     (abort_iocb->iocb_flag & LPFC_DRIVER_ABORTED) == 0)
3487                         spin_unlock_irq(&phba->hbalock);
3488                 else {
3489                         list_del_init(&abort_iocb->list);
3490                         pring->txcmplq_cnt--;
3491                         spin_unlock_irq(&phba->hbalock);
3492
3493                         abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED;
3494                         abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
3495                         abort_iocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
3496                         (abort_iocb->iocb_cmpl)(phba, abort_iocb, abort_iocb);
3497                 }
3498         }
3499
3500         lpfc_sli_release_iocbq(phba, cmdiocb);
3501         return;
3502 }
3503
3504 static void
3505 lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3506                      struct lpfc_iocbq *rspiocb)
3507 {
3508         IOCB_t *irsp = &rspiocb->iocb;
3509
3510         /* ELS cmd tag <ulpIoTag> completes */
3511         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
3512                         "0133 Ignoring ELS cmd tag x%x completion Data: "
3513                         "x%x x%x x%x\n",
3514                         irsp->ulpIoTag, irsp->ulpStatus,
3515                         irsp->un.ulpWord[4], irsp->ulpTimeout);
3516         if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR)
3517                 lpfc_ct_free_iocb(phba, cmdiocb);
3518         else
3519                 lpfc_els_free_iocb(phba, cmdiocb);
3520         return;
3521 }
3522
3523 int
3524 lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3525                            struct lpfc_iocbq *cmdiocb)
3526 {
3527         struct lpfc_vport *vport = cmdiocb->vport;
3528         struct lpfc_iocbq *abtsiocbp;
3529         IOCB_t *icmd = NULL;
3530         IOCB_t *iabt = NULL;
3531         int retval = IOCB_ERROR;
3532
3533         /*
3534          * There are certain command types we don't want to abort.  And we
3535          * don't want to abort commands that are already in the process of
3536          * being aborted.
3537          */
3538         icmd = &cmdiocb->iocb;
3539         if (icmd->ulpCommand == CMD_ABORT_XRI_CN ||
3540             icmd->ulpCommand == CMD_CLOSE_XRI_CN ||
3541             (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0)
3542                 return 0;
3543
3544         /* If we're unloading, don't abort iocb on the ELS ring, but change the
3545          * callback so that nothing happens when it finishes.
3546          */
3547         if ((vport->load_flag & FC_UNLOADING) &&
3548             (pring->ringno == LPFC_ELS_RING)) {
3549                 if (cmdiocb->iocb_flag & LPFC_IO_FABRIC)
3550                         cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl;
3551                 else
3552                         cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl;
3553                 goto abort_iotag_exit;
3554         }
3555
3556         /* issue ABTS for this IOCB based on iotag */
3557         abtsiocbp = __lpfc_sli_get_iocbq(phba);
3558         if (abtsiocbp == NULL)
3559                 return 0;
3560
3561         /* This signals the response to set the correct status
3562          * before calling the completion handler.
3563          */
3564         cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED;
3565
3566         iabt = &abtsiocbp->iocb;
3567         iabt->un.acxri.abortType = ABORT_TYPE_ABTS;
3568         iabt->un.acxri.abortContextTag = icmd->ulpContext;
3569         iabt->un.acxri.abortIoTag = icmd->ulpIoTag;
3570         iabt->ulpLe = 1;
3571         iabt->ulpClass = icmd->ulpClass;
3572
3573         if (phba->link_state >= LPFC_LINK_UP)
3574                 iabt->ulpCommand = CMD_ABORT_XRI_CN;
3575         else
3576                 iabt->ulpCommand = CMD_CLOSE_XRI_CN;
3577
3578         abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl;
3579
3580         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3581                          "0339 Abort xri x%x, original iotag x%x, "
3582                          "abort cmd iotag x%x\n",
3583                          iabt->un.acxri.abortContextTag,
3584                          iabt->un.acxri.abortIoTag, abtsiocbp->iotag);
3585         retval = __lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0);
3586
3587 abort_iotag_exit:
3588         /*
3589          * Caller to this routine should check for IOCB_ERROR
3590          * and handle it properly.  This routine no longer removes
3591          * iocb off txcmplq and call compl in case of IOCB_ERROR.
3592          */
3593         return retval;
3594 }
3595
3596 static int
3597 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport,
3598                            uint16_t tgt_id, uint64_t lun_id,
3599                            lpfc_ctx_cmd ctx_cmd)
3600 {
3601         struct lpfc_scsi_buf *lpfc_cmd;
3602         struct scsi_cmnd *cmnd;
3603         int rc = 1;
3604
3605         if (!(iocbq->iocb_flag &  LPFC_IO_FCP))
3606                 return rc;
3607
3608         if (iocbq->vport != vport)
3609                 return rc;
3610
3611         lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
3612         cmnd = lpfc_cmd->pCmd;
3613
3614         if (cmnd == NULL)
3615                 return rc;
3616
3617         switch (ctx_cmd) {
3618         case LPFC_CTX_LUN:
3619                 if ((cmnd->device->id == tgt_id) &&
3620                     (cmnd->device->lun == lun_id))
3621                         rc = 0;
3622                 break;
3623         case LPFC_CTX_TGT:
3624                 if (cmnd->device->id == tgt_id)
3625                         rc = 0;
3626                 break;
3627         case LPFC_CTX_HOST:
3628                 rc = 0;
3629                 break;
3630         default:
3631                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
3632                         __FUNCTION__, ctx_cmd);
3633                 break;
3634         }
3635
3636         return rc;
3637 }
3638
3639 int
3640 lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
3641                   lpfc_ctx_cmd ctx_cmd)
3642 {
3643         struct lpfc_hba *phba = vport->phba;
3644         struct lpfc_iocbq *iocbq;
3645         int sum, i;
3646
3647         for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
3648                 iocbq = phba->sli.iocbq_lookup[i];
3649
3650                 if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id,
3651                                                 ctx_cmd) == 0)
3652                         sum++;
3653         }
3654
3655         return sum;
3656 }
3657
3658 void
3659 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3660                         struct lpfc_iocbq *rspiocb)
3661 {
3662         lpfc_sli_release_iocbq(phba, cmdiocb);
3663         return;
3664 }
3665
3666 int
3667 lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
3668                     uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd)
3669 {
3670         struct lpfc_hba *phba = vport->phba;
3671         struct lpfc_iocbq *iocbq;
3672         struct lpfc_iocbq *abtsiocb;
3673         IOCB_t *cmd = NULL;
3674         int errcnt = 0, ret_val = 0;
3675         int i;
3676
3677         for (i = 1; i <= phba->sli.last_iotag; i++) {
3678                 iocbq = phba->sli.iocbq_lookup[i];
3679
3680                 if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
3681                                                abort_cmd) != 0)
3682                         continue;
3683
3684                 /* issue ABTS for this IOCB based on iotag */
3685                 abtsiocb = lpfc_sli_get_iocbq(phba);
3686                 if (abtsiocb == NULL) {
3687                         errcnt++;
3688                         continue;
3689                 }
3690
3691                 cmd = &iocbq->iocb;
3692                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
3693                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
3694                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
3695                 abtsiocb->iocb.ulpLe = 1;
3696                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
3697                 abtsiocb->vport = phba->pport;
3698
3699                 if (lpfc_is_link_up(phba))
3700                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
3701                 else
3702                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
3703
3704                 /* Setup callback routine and issue the command. */
3705                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
3706                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
3707                 if (ret_val == IOCB_ERROR) {
3708                         lpfc_sli_release_iocbq(phba, abtsiocb);
3709                         errcnt++;
3710                         continue;
3711                 }
3712         }
3713
3714         return errcnt;
3715 }
3716
3717 static void
3718 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
3719                         struct lpfc_iocbq *cmdiocbq,
3720                         struct lpfc_iocbq *rspiocbq)
3721 {
3722         wait_queue_head_t *pdone_q;
3723         unsigned long iflags;
3724
3725         spin_lock_irqsave(&phba->hbalock, iflags);
3726         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
3727         if (cmdiocbq->context2 && rspiocbq)
3728                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
3729                        &rspiocbq->iocb, sizeof(IOCB_t));
3730
3731         pdone_q = cmdiocbq->context_un.wait_queue;
3732         if (pdone_q)
3733                 wake_up(pdone_q);
3734         spin_unlock_irqrestore(&phba->hbalock, iflags);
3735         return;
3736 }
3737
3738 /*
3739  * Issue the caller's iocb and wait for its completion, but no longer than the
3740  * caller's timeout.  Note that iocb_flags is cleared before the
3741  * lpfc_sli_issue_call since the wake routine sets a unique value and by
3742  * definition this is a wait function.
3743  */
3744
3745 int
3746 lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
3747                          struct lpfc_sli_ring *pring,
3748                          struct lpfc_iocbq *piocb,
3749                          struct lpfc_iocbq *prspiocbq,
3750                          uint32_t timeout)
3751 {
3752         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3753         long timeleft, timeout_req = 0;
3754         int retval = IOCB_SUCCESS;
3755         uint32_t creg_val;
3756
3757         /*
3758          * If the caller has provided a response iocbq buffer, then context2
3759          * is NULL or its an error.
3760          */
3761         if (prspiocbq) {
3762                 if (piocb->context2)
3763                         return IOCB_ERROR;
3764                 piocb->context2 = prspiocbq;
3765         }
3766
3767         piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
3768         piocb->context_un.wait_queue = &done_q;
3769         piocb->iocb_flag &= ~LPFC_IO_WAKE;
3770
3771         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3772                 creg_val = readl(phba->HCregaddr);
3773                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
3774                 writel(creg_val, phba->HCregaddr);
3775                 readl(phba->HCregaddr); /* flush */
3776         }
3777
3778         retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
3779         if (retval == IOCB_SUCCESS) {
3780                 timeout_req = timeout * HZ;
3781                 timeleft = wait_event_timeout(done_q,
3782                                 piocb->iocb_flag & LPFC_IO_WAKE,
3783                                 timeout_req);
3784
3785                 if (piocb->iocb_flag & LPFC_IO_WAKE) {
3786                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3787                                         "0331 IOCB wake signaled\n");
3788                 } else if (timeleft == 0) {
3789                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3790                                         "0338 IOCB wait timeout error - no "
3791                                         "wake response Data x%x\n", timeout);
3792                         retval = IOCB_TIMEDOUT;
3793                 } else {
3794                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3795                                         "0330 IOCB wake NOT set, "
3796                                         "Data x%x x%lx\n",
3797                                         timeout, (timeleft / jiffies));
3798                         retval = IOCB_TIMEDOUT;
3799                 }
3800         } else {
3801                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3802                                 ":0332 IOCB wait issue failed, Data x%x\n",
3803                                 retval);
3804                 retval = IOCB_ERROR;
3805         }
3806
3807         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3808                 creg_val = readl(phba->HCregaddr);
3809                 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
3810                 writel(creg_val, phba->HCregaddr);
3811                 readl(phba->HCregaddr); /* flush */
3812         }
3813
3814         if (prspiocbq)
3815                 piocb->context2 = NULL;
3816
3817         piocb->context_un.wait_queue = NULL;
3818         piocb->iocb_cmpl = NULL;
3819         return retval;
3820 }
3821
3822 int
3823 lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
3824                          uint32_t timeout)
3825 {
3826         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3827         int retval;
3828         unsigned long flag;
3829
3830         /* The caller must leave context1 empty. */
3831         if (pmboxq->context1)
3832                 return MBX_NOT_FINISHED;
3833
3834         /* setup wake call as IOCB callback */
3835         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
3836         /* setup context field to pass wait_queue pointer to wake function  */
3837         pmboxq->context1 = &done_q;
3838
3839         /* now issue the command */
3840         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3841
3842         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
3843                 wait_event_interruptible_timeout(done_q,
3844                                 pmboxq->mbox_flag & LPFC_MBX_WAKE,
3845                                 timeout * HZ);
3846
3847                 spin_lock_irqsave(&phba->hbalock, flag);
3848                 pmboxq->context1 = NULL;
3849                 /*
3850                  * if LPFC_MBX_WAKE flag is set the mailbox is completed
3851                  * else do not free the resources.
3852                  */
3853                 if (pmboxq->mbox_flag & LPFC_MBX_WAKE)
3854                         retval = MBX_SUCCESS;
3855                 else {
3856                         retval = MBX_TIMEOUT;
3857                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3858                 }
3859                 spin_unlock_irqrestore(&phba->hbalock, flag);
3860         }
3861
3862         return retval;
3863 }
3864
3865 int
3866 lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba)
3867 {
3868         struct lpfc_vport *vport = phba->pport;
3869         int i = 0;
3870         uint32_t ha_copy;
3871
3872         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !vport->stopped) {
3873                 if (i++ > LPFC_MBOX_TMO * 1000)
3874                         return 1;
3875
3876                 /*
3877                  * Call lpfc_sli_handle_mb_event only if a mailbox cmd
3878                  * did finish. This way we won't get the misleading
3879                  * "Stray Mailbox Interrupt" message.
3880                  */
3881                 spin_lock_irq(&phba->hbalock);
3882                 ha_copy = phba->work_ha;
3883                 phba->work_ha &= ~HA_MBATT;
3884                 spin_unlock_irq(&phba->hbalock);
3885
3886                 if (ha_copy & HA_MBATT)
3887                         if (lpfc_sli_handle_mb_event(phba) == 0)
3888                                 i = 0;
3889
3890                 msleep(1);
3891         }
3892
3893         return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0;
3894 }
3895
3896 irqreturn_t
3897 lpfc_intr_handler(int irq, void *dev_id)
3898 {
3899         struct lpfc_hba  *phba;
3900         uint32_t ha_copy;
3901         uint32_t work_ha_copy;
3902         unsigned long status;
3903         uint32_t control;
3904
3905         MAILBOX_t *mbox, *pmbox;
3906         struct lpfc_vport *vport;
3907         struct lpfc_nodelist *ndlp;
3908         struct lpfc_dmabuf *mp;
3909         LPFC_MBOXQ_t *pmb;
3910         int rc;
3911
3912         /*
3913          * Get the driver's phba structure from the dev_id and
3914          * assume the HBA is not interrupting.
3915          */
3916         phba = (struct lpfc_hba *) dev_id;
3917
3918         if (unlikely(!phba))
3919                 return IRQ_NONE;
3920
3921         /* If the pci channel is offline, ignore all the interrupts. */
3922         if (unlikely(pci_channel_offline(phba->pcidev)))
3923                 return IRQ_NONE;
3924
3925         phba->sli.slistat.sli_intr++;
3926
3927         /*
3928          * Call the HBA to see if it is interrupting.  If not, don't claim
3929          * the interrupt
3930          */
3931
3932         /* Ignore all interrupts during initialization. */
3933         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
3934                 return IRQ_NONE;
3935
3936         /*
3937          * Read host attention register to determine interrupt source
3938          * Clear Attention Sources, except Error Attention (to
3939          * preserve status) and Link Attention
3940          */
3941         spin_lock(&phba->hbalock);
3942         ha_copy = readl(phba->HAregaddr);
3943         /* If somebody is waiting to handle an eratt don't process it
3944          * here.  The brdkill function will do this.
3945          */
3946         if (phba->link_flag & LS_IGNORE_ERATT)
3947                 ha_copy &= ~HA_ERATT;
3948         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
3949         readl(phba->HAregaddr); /* flush */
3950         spin_unlock(&phba->hbalock);
3951
3952         if (unlikely(!ha_copy))
3953                 return IRQ_NONE;
3954
3955         work_ha_copy = ha_copy & phba->work_ha_mask;
3956
3957         if (unlikely(work_ha_copy)) {
3958                 if (work_ha_copy & HA_LATT) {
3959                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
3960                                 /*
3961                                  * Turn off Link Attention interrupts
3962                                  * until CLEAR_LA done
3963                                  */
3964                                 spin_lock(&phba->hbalock);
3965                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
3966                                 control = readl(phba->HCregaddr);
3967                                 control &= ~HC_LAINT_ENA;
3968                                 writel(control, phba->HCregaddr);
3969                                 readl(phba->HCregaddr); /* flush */
3970                                 spin_unlock(&phba->hbalock);
3971                         }
3972                         else
3973                                 work_ha_copy &= ~HA_LATT;
3974                 }
3975
3976                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
3977                         /*
3978                          * Turn off Slow Rings interrupts, LPFC_ELS_RING is
3979                          * the only slow ring.
3980                          */
3981                         status = (work_ha_copy &
3982                                 (HA_RXMASK  << (4*LPFC_ELS_RING)));
3983                         status >>= (4*LPFC_ELS_RING);
3984                         if (status & HA_RXMASK) {
3985                                 spin_lock(&phba->hbalock);
3986                                 control = readl(phba->HCregaddr);
3987
3988                                 lpfc_debugfs_slow_ring_trc(phba,
3989                                 "ISR slow ring:   ctl:x%x stat:x%x isrcnt:x%x",
3990                                 control, status,
3991                                 (uint32_t)phba->sli.slistat.sli_intr);
3992
3993                                 if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
3994                                         lpfc_debugfs_slow_ring_trc(phba,
3995                                                 "ISR Disable ring:"
3996                                                 "pwork:x%x hawork:x%x wait:x%x",
3997                                                 phba->work_ha, work_ha_copy,
3998                                                 (uint32_t)((unsigned long)
3999                                                 phba->work_wait));
4000
4001                                         control &=
4002                                             ~(HC_R0INT_ENA << LPFC_ELS_RING);
4003                                         writel(control, phba->HCregaddr);
4004                                         readl(phba->HCregaddr); /* flush */
4005                                 }
4006                                 else {
4007                                         lpfc_debugfs_slow_ring_trc(phba,
4008                                                 "ISR slow ring:   pwork:"
4009                                                 "x%x hawork:x%x wait:x%x",
4010                                                 phba->work_ha, work_ha_copy,
4011                                                 (uint32_t)((unsigned long)
4012                                                 phba->work_wait));
4013                                 }
4014                                 spin_unlock(&phba->hbalock);
4015                         }
4016                 }
4017
4018                 if (work_ha_copy & HA_ERATT) {
4019                         phba->link_state = LPFC_HBA_ERROR;
4020                         /*
4021                          * There was a link/board error.  Read the
4022                          * status register to retrieve the error event
4023                          * and process it.
4024                          */
4025                         phba->sli.slistat.err_attn_event++;
4026                         /* Save status info */
4027                         phba->work_hs = readl(phba->HSregaddr);
4028                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
4029                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
4030
4031                         /* Clear Chip error bit */
4032                         writel(HA_ERATT, phba->HAregaddr);
4033                         readl(phba->HAregaddr); /* flush */
4034                         phba->pport->stopped = 1;
4035                 }
4036
4037                 if ((work_ha_copy & HA_MBATT) &&
4038                     (phba->sli.mbox_active)) {
4039                         pmb = phba->sli.mbox_active;
4040                         pmbox = &pmb->mb;
4041                         mbox = &phba->slim2p->mbx;
4042                         vport = pmb->vport;
4043
4044                         /* First check out the status word */
4045                         lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t));
4046                         if (pmbox->mbxOwner != OWN_HOST) {
4047                                 /*
4048                                  * Stray Mailbox Interrupt, mbxCommand <cmd>
4049                                  * mbxStatus <status>
4050                                  */
4051                                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX |
4052                                                 LOG_SLI,
4053                                                 "(%d):0304 Stray Mailbox "
4054                                                 "Interrupt mbxCommand x%x "
4055                                                 "mbxStatus x%x\n",
4056                                                 (vport ? vport->vpi : 0),
4057                                                 pmbox->mbxCommand,
4058                                                 pmbox->mbxStatus);
4059                         }
4060                         phba->last_completion_time = jiffies;
4061                         del_timer_sync(&phba->sli.mbox_tmo);
4062
4063                         phba->sli.mbox_active = NULL;
4064                         if (pmb->mbox_cmpl) {
4065                                 lpfc_sli_pcimem_bcopy(mbox, pmbox,
4066                                                       MAILBOX_CMD_SIZE);
4067                         }
4068                         if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
4069                                 pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
4070
4071                                 lpfc_debugfs_disc_trc(vport,
4072                                         LPFC_DISC_TRC_MBOX_VPORT,
4073                                         "MBOX dflt rpi: : status:x%x rpi:x%x",
4074                                         (uint32_t)pmbox->mbxStatus,
4075                                         pmbox->un.varWords[0], 0);
4076
4077                                 if ( !pmbox->mbxStatus) {
4078                                         mp = (struct lpfc_dmabuf *)
4079                                                 (pmb->context1);
4080                                         ndlp = (struct lpfc_nodelist *)
4081                                                 pmb->context2;
4082
4083                                         /* Reg_LOGIN of dflt RPI was successful.
4084                                          * new lets get rid of the RPI using the
4085                                          * same mbox buffer.
4086                                          */
4087                                         lpfc_unreg_login(phba, vport->vpi,
4088                                                 pmbox->un.varWords[0], pmb);
4089                                         pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4090                                         pmb->context1 = mp;
4091                                         pmb->context2 = ndlp;
4092                                         pmb->vport = vport;
4093                                         spin_lock(&phba->hbalock);
4094                                         phba->sli.sli_flag &=
4095                                                 ~LPFC_SLI_MBOX_ACTIVE;
4096                                         spin_unlock(&phba->hbalock);
4097                                         goto send_current_mbox;
4098                                 }
4099                         }
4100                         spin_lock(&phba->pport->work_port_lock);
4101                         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
4102                         spin_unlock(&phba->pport->work_port_lock);
4103                         lpfc_mbox_cmpl_put(phba, pmb);
4104                 }
4105                 if ((work_ha_copy & HA_MBATT) &&
4106                     (phba->sli.mbox_active == NULL)) {
4107 send_next_mbox:
4108                         spin_lock(&phba->hbalock);
4109                         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
4110                         pmb = lpfc_mbox_get(phba);
4111                         spin_unlock(&phba->hbalock);
4112 send_current_mbox:
4113                         /* Process next mailbox command if there is one */
4114                         if (pmb != NULL) {
4115                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
4116                                 if (rc == MBX_NOT_FINISHED) {
4117                                         pmb->mb.mbxStatus = MBX_NOT_FINISHED;
4118                                         lpfc_mbox_cmpl_put(phba, pmb);
4119                                         goto send_next_mbox;
4120                                 }
4121                         }
4122
4123                 }
4124
4125                 spin_lock(&phba->hbalock);
4126                 phba->work_ha |= work_ha_copy;
4127                 if (phba->work_wait)
4128                         lpfc_worker_wake_up(phba);
4129                 spin_unlock(&phba->hbalock);
4130         }
4131
4132         ha_copy &= ~(phba->work_ha_mask);
4133
4134         /*
4135          * Process all events on FCP ring.  Take the optimized path for
4136          * FCP IO.  Any other IO is slow path and is handled by
4137          * the worker thread.
4138          */
4139         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
4140         status >>= (4*LPFC_FCP_RING);
4141         if (status & HA_RXMASK)
4142                 lpfc_sli_handle_fast_ring_event(phba,
4143                                                 &phba->sli.ring[LPFC_FCP_RING],
4144                                                 status);
4145
4146         if (phba->cfg_multi_ring_support == 2) {
4147                 /*
4148                  * Process all events on extra ring.  Take the optimized path
4149                  * for extra ring IO.  Any other IO is slow path and is handled
4150                  * by the worker thread.
4151                  */
4152                 status = (ha_copy & (HA_RXMASK  << (4*LPFC_EXTRA_RING)));
4153                 status >>= (4*LPFC_EXTRA_RING);
4154                 if (status & HA_RXMASK) {
4155                         lpfc_sli_handle_fast_ring_event(phba,
4156                                         &phba->sli.ring[LPFC_EXTRA_RING],
4157                                         status);
4158                 }
4159         }
4160         return IRQ_HANDLED;
4161
4162 } /* lpfc_intr_handler */