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

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/delay.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_cmnd.h>
  29 #include <scsi/scsi_device.h>
  30 #include <scsi/scsi_host.h>
  31 #include <scsi/scsi_transport_fc.h>
  32
  33 #include "lpfc_hw.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_disc.h"
  36 #include "lpfc_scsi.h"
  37 #include "lpfc.h"
  38 #include "lpfc_crtn.h"
  39 #include "lpfc_logmsg.h"
  40 #include "lpfc_compat.h"
  41 #include "lpfc_debugfs.h"
  42
  43 /*
  44  * Define macro to log: Mailbox command x%x cannot issue Data
  45  * This allows multiple uses of lpfc_msgBlk0311
  46  * w/o perturbing log msg utility.
  47  */
  48 #define LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag) \
  49                         lpfc_printf_log(phba, \
  50                                 KERN_INFO, \
  51                                 LOG_MBOX | LOG_SLI, \
  52                                 "(%d):0311 Mailbox command x%x cannot " \
  53                                 "issue Data: x%x x%x x%x\n", \
  54                                 pmbox->vport ? pmbox->vport->vpi : 0, \
  55                                 pmbox->mb.mbxCommand,           \
  56                                 phba->pport->port_state,        \
  57                                 psli->sli_flag, \
  58                                 flag)
  59
  60
  61 /* There are only four IOCB completion types. */
  62 typedef enum _lpfc_iocb_type {
  63         LPFC_UNKNOWN_IOCB,
  64         LPFC_UNSOL_IOCB,
  65         LPFC_SOL_IOCB,
  66         LPFC_ABORT_IOCB
  67 } lpfc_iocb_type;
  68
  69                 /* SLI-2/SLI-3 provide different sized iocbs.  Given a pointer
  70                  * to the start of the ring, and the slot number of the
  71                  * desired iocb entry, calc a pointer to that entry.
  72                  */
  73 static inline IOCB_t *
  74 lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
  75 {
  76         return (IOCB_t *) (((char *) pring->cmdringaddr) +
  77                            pring->cmdidx * phba->iocb_cmd_size);
  78 }
  79
  80 static inline IOCB_t *
  81 lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
  82 {
  83         return (IOCB_t *) (((char *) pring->rspringaddr) +
  84                            pring->rspidx * phba->iocb_rsp_size);
  85 }
  86
  87 static struct lpfc_iocbq *
  88 __lpfc_sli_get_iocbq(struct lpfc_hba *phba)
  89 {
  90         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
  91         struct lpfc_iocbq * iocbq = NULL;
  92
  93         list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
  94         return iocbq;
  95 }
  96
  97 struct lpfc_iocbq *
  98 lpfc_sli_get_iocbq(struct lpfc_hba *phba)
  99 {
 100         struct lpfc_iocbq * iocbq = NULL;
 101         unsigned long iflags;
 102
 103         spin_lock_irqsave(&phba->hbalock, iflags);
 104         iocbq = __lpfc_sli_get_iocbq(phba);
 105         spin_unlock_irqrestore(&phba->hbalock, iflags);
 106         return iocbq;
 107 }
 108
 109 static void
 110 __lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 111 {
 112         size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
 113
 114         /*
 115          * Clean all volatile data fields, preserve iotag and node struct.
 116          */
 117         memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
 118         list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
 119 }
 120
 121 void
 122 lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 123 {
 124         unsigned long iflags;
 125
 126         /*
 127          * Clean all volatile data fields, preserve iotag and node struct.
 128          */
 129         spin_lock_irqsave(&phba->hbalock, iflags);
 130         __lpfc_sli_release_iocbq(phba, iocbq);
 131         spin_unlock_irqrestore(&phba->hbalock, iflags);
 132 }
 133
 134 /*
 135  * Translate the iocb command to an iocb command type used to decide the final
 136  * disposition of each completed IOCB.
 137  */
 138 static lpfc_iocb_type
 139 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
 140 {
 141         lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
 142
 143         if (iocb_cmnd > CMD_MAX_IOCB_CMD)
 144                 return 0;
 145
 146         switch (iocb_cmnd) {
 147         case CMD_XMIT_SEQUENCE_CR:
 148         case CMD_XMIT_SEQUENCE_CX:
 149         case CMD_XMIT_BCAST_CN:
 150         case CMD_XMIT_BCAST_CX:
 151         case CMD_ELS_REQUEST_CR:
 152         case CMD_ELS_REQUEST_CX:
 153         case CMD_CREATE_XRI_CR:
 154         case CMD_CREATE_XRI_CX:
 155         case CMD_GET_RPI_CN:
 156         case CMD_XMIT_ELS_RSP_CX:
 157         case CMD_GET_RPI_CR:
 158         case CMD_FCP_IWRITE_CR:
 159         case CMD_FCP_IWRITE_CX:
 160         case CMD_FCP_IREAD_CR:
 161         case CMD_FCP_IREAD_CX:
 162         case CMD_FCP_ICMND_CR:
 163         case CMD_FCP_ICMND_CX:
 164         case CMD_FCP_TSEND_CX:
 165         case CMD_FCP_TRSP_CX:
 166         case CMD_FCP_TRECEIVE_CX:
 167         case CMD_FCP_AUTO_TRSP_CX:
 168         case CMD_ADAPTER_MSG:
 169         case CMD_ADAPTER_DUMP:
 170         case CMD_XMIT_SEQUENCE64_CR:
 171         case CMD_XMIT_SEQUENCE64_CX:
 172         case CMD_XMIT_BCAST64_CN:
 173         case CMD_XMIT_BCAST64_CX:
 174         case CMD_ELS_REQUEST64_CR:
 175         case CMD_ELS_REQUEST64_CX:
 176         case CMD_FCP_IWRITE64_CR:
 177         case CMD_FCP_IWRITE64_CX:
 178         case CMD_FCP_IREAD64_CR:
 179         case CMD_FCP_IREAD64_CX:
 180         case CMD_FCP_ICMND64_CR:
 181         case CMD_FCP_ICMND64_CX:
 182         case CMD_FCP_TSEND64_CX:
 183         case CMD_FCP_TRSP64_CX:
 184         case CMD_FCP_TRECEIVE64_CX:
 185         case CMD_GEN_REQUEST64_CR:
 186         case CMD_GEN_REQUEST64_CX:
 187         case CMD_XMIT_ELS_RSP64_CX:
 188                 type = LPFC_SOL_IOCB;
 189                 break;
 190         case CMD_ABORT_XRI_CN:
 191         case CMD_ABORT_XRI_CX:
 192         case CMD_CLOSE_XRI_CN:
 193         case CMD_CLOSE_XRI_CX:
 194         case CMD_XRI_ABORTED_CX:
 195         case CMD_ABORT_MXRI64_CN:
 196                 type = LPFC_ABORT_IOCB;
 197                 break;
 198         case CMD_RCV_SEQUENCE_CX:
 199         case CMD_RCV_ELS_REQ_CX:
 200         case CMD_RCV_SEQUENCE64_CX:
 201         case CMD_RCV_ELS_REQ64_CX:
 202         case CMD_ASYNC_STATUS:
 203         case CMD_IOCB_RCV_SEQ64_CX:
 204         case CMD_IOCB_RCV_ELS64_CX:
 205         case CMD_IOCB_RCV_CONT64_CX:
 206                 type = LPFC_UNSOL_IOCB;
 207                 break;
 208         default:
 209                 type = LPFC_UNKNOWN_IOCB;
 210                 break;
 211         }
 212
 213         return type;
 214 }
 215
 216 static int
 217 lpfc_sli_ring_map(struct lpfc_hba *phba)
 218 {
 219         struct lpfc_sli *psli = &phba->sli;
 220         LPFC_MBOXQ_t *pmb;
 221         MAILBOX_t *pmbox;
 222         int i, rc, ret = 0;
 223
 224         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 225         if (!pmb)
 226                 return -ENOMEM;
 227         pmbox = &pmb->mb;
 228         phba->link_state = LPFC_INIT_MBX_CMDS;
 229         for (i = 0; i < psli->num_rings; i++) {
 230                 lpfc_config_ring(phba, i, pmb);
 231                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 232                 if (rc != MBX_SUCCESS) {
 233                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 234                                         "0446 Adapter failed to init (%d), "
 235                                         "mbxCmd x%x CFG_RING, mbxStatus x%x, "
 236                                         "ring %d\n",
 237                                         rc, pmbox->mbxCommand,
 238                                         pmbox->mbxStatus, i);
 239                         phba->link_state = LPFC_HBA_ERROR;
 240                         ret = -ENXIO;
 241                         break;
 242                 }
 243         }
 244         mempool_free(pmb, phba->mbox_mem_pool);
 245         return ret;
 246 }
 247
 248 static int
 249 lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 250                         struct lpfc_iocbq *piocb)
 251 {
 252         list_add_tail(&piocb->list, &pring->txcmplq);
 253         pring->txcmplq_cnt++;
 254         if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
 255            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
 256            (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
 257                 if (!piocb->vport)
 258                         BUG();
 259                 else
 260                         mod_timer(&piocb->vport->els_tmofunc,
 261                                   jiffies + HZ * (phba->fc_ratov << 1));
 262         }
 263
 264
 265         return 0;
 266 }
 267
 268 static struct lpfc_iocbq *
 269 lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 270 {
 271         struct lpfc_iocbq *cmd_iocb;
 272
 273         list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list);
 274         if (cmd_iocb != NULL)
 275                 pring->txq_cnt--;
 276         return cmd_iocb;
 277 }
 278
 279 static IOCB_t *
 280 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 281 {
 282         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
 283                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
 284                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
 285         uint32_t  max_cmd_idx = pring->numCiocb;
 286
 287         if ((pring->next_cmdidx == pring->cmdidx) &&
 288            (++pring->next_cmdidx >= max_cmd_idx))
 289                 pring->next_cmdidx = 0;
 290
 291         if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
 292
 293                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
 294
 295                 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
 296                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 297                                         "0315 Ring %d issue: portCmdGet %d "
 298                                         "is bigger then cmd ring %d\n",
 299                                         pring->ringno,
 300                                         pring->local_getidx, max_cmd_idx);
 301
 302                         phba->link_state = LPFC_HBA_ERROR;
 303                         /*
 304                          * All error attention handlers are posted to
 305                          * worker thread
 306                          */
 307                         phba->work_ha |= HA_ERATT;
 308                         phba->work_hs = HS_FFER3;
 309
 310                         /* hbalock should already be held */
 311                         if (phba->work_wait)
 312                                 lpfc_worker_wake_up(phba);
 313
 314                         return NULL;
 315                 }
 316
 317                 if (pring->local_getidx == pring->next_cmdidx)
 318                         return NULL;
 319         }
 320
 321         return lpfc_cmd_iocb(phba, pring);
 322 }
 323
 324 uint16_t
 325 lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 326 {
 327         struct lpfc_iocbq **new_arr;
 328         struct lpfc_iocbq **old_arr;
 329         size_t new_len;
 330         struct lpfc_sli *psli = &phba->sli;
 331         uint16_t iotag;
 332
 333         spin_lock_irq(&phba->hbalock);
 334         iotag = psli->last_iotag;
 335         if(++iotag < psli->iocbq_lookup_len) {
 336                 psli->last_iotag = iotag;
 337                 psli->iocbq_lookup[iotag] = iocbq;
 338                 spin_unlock_irq(&phba->hbalock);
 339                 iocbq->iotag = iotag;
 340                 return iotag;
 341         } else if (psli->iocbq_lookup_len < (0xffff
 342                                            - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
 343                 new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
 344                 spin_unlock_irq(&phba->hbalock);
 345                 new_arr = kzalloc(new_len * sizeof (struct lpfc_iocbq *),
 346                                   GFP_KERNEL);
 347                 if (new_arr) {
 348                         spin_lock_irq(&phba->hbalock);
 349                         old_arr = psli->iocbq_lookup;
 350                         if (new_len <= psli->iocbq_lookup_len) {
 351                                 /* highly unprobable case */
 352                                 kfree(new_arr);
 353                                 iotag = psli->last_iotag;
 354                                 if(++iotag < psli->iocbq_lookup_len) {
 355                                         psli->last_iotag = iotag;
 356                                         psli->iocbq_lookup[iotag] = iocbq;
 357                                         spin_unlock_irq(&phba->hbalock);
 358                                         iocbq->iotag = iotag;
 359                                         return iotag;
 360                                 }
 361                                 spin_unlock_irq(&phba->hbalock);
 362                                 return 0;
 363                         }
 364                         if (psli->iocbq_lookup)
 365                                 memcpy(new_arr, old_arr,
 366                                        ((psli->last_iotag  + 1) *
 367                                         sizeof (struct lpfc_iocbq *)));
 368                         psli->iocbq_lookup = new_arr;
 369                         psli->iocbq_lookup_len = new_len;
 370                         psli->last_iotag = iotag;
 371                         psli->iocbq_lookup[iotag] = iocbq;
 372                         spin_unlock_irq(&phba->hbalock);
 373                         iocbq->iotag = iotag;
 374                         kfree(old_arr);
 375                         return iotag;
 376                 }
 377         } else
 378                 spin_unlock_irq(&phba->hbalock);
 379
 380         lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
 381                         "0318 Failed to allocate IOTAG.last IOTAG is %d\n",
 382                         psli->last_iotag);
 383
 384         return 0;
 385 }
 386
 387 static void
 388 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 389                 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
 390 {
 391         /*
 392          * Set up an iotag
 393          */
 394         nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
 395
 396         if (pring->ringno == LPFC_ELS_RING) {
 397                 lpfc_debugfs_slow_ring_trc(phba,
 398                         "IOCB cmd ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
 399                         *(((uint32_t *) &nextiocb->iocb) + 4),
 400                         *(((uint32_t *) &nextiocb->iocb) + 6),
 401                         *(((uint32_t *) &nextiocb->iocb) + 7));
 402         }
 403
 404         /*
 405          * Issue iocb command to adapter
 406          */
 407         lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size);
 408         wmb();
 409         pring->stats.iocb_cmd++;
 410
 411         /*
 412          * If there is no completion routine to call, we can release the
 413          * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
 414          * that have no rsp ring completion, iocb_cmpl MUST be NULL.
 415          */
 416         if (nextiocb->iocb_cmpl)
 417                 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
 418         else
 419                 __lpfc_sli_release_iocbq(phba, nextiocb);
 420
 421         /*
 422          * Let the HBA know what IOCB slot will be the next one the
 423          * driver will put a command into.
 424          */
 425         pring->cmdidx = pring->next_cmdidx;
 426         writel(pring->cmdidx, &phba->host_gp[pring->ringno].cmdPutInx);
 427 }
 428
 429 static void
 430 lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 431 {
 432         int ringno = pring->ringno;
 433
 434         pring->flag |= LPFC_CALL_RING_AVAILABLE;
 435
 436         wmb();
 437
 438         /*
 439          * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
 440          * The HBA will tell us when an IOCB entry is available.
 441          */
 442         writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
 443         readl(phba->CAregaddr); /* flush */
 444
 445         pring->stats.iocb_cmd_full++;
 446 }
 447
 448 static void
 449 lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 450 {
 451         int ringno = pring->ringno;
 452
 453         /*
 454          * Tell the HBA that there is work to do in this ring.
 455          */
 456         wmb();
 457         writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
 458         readl(phba->CAregaddr); /* flush */
 459 }
 460
 461 static void
 462 lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 463 {
 464         IOCB_t *iocb;
 465         struct lpfc_iocbq *nextiocb;
 466
 467         /*
 468          * Check to see if:
 469          *  (a) there is anything on the txq to send
 470          *  (b) link is up
 471          *  (c) link attention events can be processed (fcp ring only)
 472          *  (d) IOCB processing is not blocked by the outstanding mbox command.
 473          */
 474         if (pring->txq_cnt &&
 475             lpfc_is_link_up(phba) &&
 476             (pring->ringno != phba->sli.fcp_ring ||
 477              phba->sli.sli_flag & LPFC_PROCESS_LA)) {
 478
 479                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
 480                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
 481                         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
 482
 483                 if (iocb)
 484                         lpfc_sli_update_ring(phba, pring);
 485                 else
 486                         lpfc_sli_update_full_ring(phba, pring);
 487         }
 488
 489         return;
 490 }
 491
 492 static struct lpfc_hbq_entry *
 493 lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
 494 {
 495         struct hbq_s *hbqp = &phba->hbqs[hbqno];
 496
 497         if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx &&
 498             ++hbqp->next_hbqPutIdx >= hbqp->entry_count)
 499                 hbqp->next_hbqPutIdx = 0;
 500
 501         if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) {
 502                 uint32_t raw_index = phba->hbq_get[hbqno];
 503                 uint32_t getidx = le32_to_cpu(raw_index);
 504
 505                 hbqp->local_hbqGetIdx = getidx;
 506
 507                 if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) {
 508                         lpfc_printf_log(phba, KERN_ERR,
 509                                         LOG_SLI | LOG_VPORT,
 510                                         "1802 HBQ %d: local_hbqGetIdx "
 511                                         "%u is > than hbqp->entry_count %u\n",
 512                                         hbqno, hbqp->local_hbqGetIdx,
 513                                         hbqp->entry_count);
 514
 515                         phba->link_state = LPFC_HBA_ERROR;
 516                         return NULL;
 517                 }
 518
 519                 if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)
 520                         return NULL;
 521         }
 522
 523         return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt +
 524                         hbqp->hbqPutIdx;
 525 }
 526
 527 void
 528 lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
 529 {
 530         struct lpfc_dmabuf *dmabuf, *next_dmabuf;
 531         struct hbq_dmabuf *hbq_buf;
 532         int i, hbq_count;
 533
 534         hbq_count = lpfc_sli_hbq_count();
 535         /* Return all memory used by all HBQs */
 536         for (i = 0; i < hbq_count; ++i) {
 537                 list_for_each_entry_safe(dmabuf, next_dmabuf,
 538                                 &phba->hbqs[i].hbq_buffer_list, list) {
 539                         hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
 540                         list_del(&hbq_buf->dbuf.list);
 541                         (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
 542                 }
 543                 phba->hbqs[i].buffer_count = 0;
 544         }
 545 }
 546
 547 static struct lpfc_hbq_entry *
 548 lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
 549                          struct hbq_dmabuf *hbq_buf)
 550 {
 551         struct lpfc_hbq_entry *hbqe;
 552         dma_addr_t physaddr = hbq_buf->dbuf.phys;
 553
 554         /* Get next HBQ entry slot to use */
 555         hbqe = lpfc_sli_next_hbq_slot(phba, hbqno);
 556         if (hbqe) {
 557                 struct hbq_s *hbqp = &phba->hbqs[hbqno];
 558
 559                 hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
 560                 hbqe->bde.addrLow  = le32_to_cpu(putPaddrLow(physaddr));
 561                 hbqe->bde.tus.f.bdeSize = hbq_buf->size;
 562                 hbqe->bde.tus.f.bdeFlags = 0;
 563                 hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w);
 564                 hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag);
 565                                 /* Sync SLIM */
 566                 hbqp->hbqPutIdx = hbqp->next_hbqPutIdx;
 567                 writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno);
 568                                 /* flush */
 569                 readl(phba->hbq_put + hbqno);
 570                 list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list);
 571         }
 572         return hbqe;
 573 }
 574
 575 static struct lpfc_hbq_init lpfc_els_hbq = {
 576         .rn = 1,
 577         .entry_count = 200,
 578         .mask_count = 0,
 579         .profile = 0,
 580         .ring_mask = (1 << LPFC_ELS_RING),
 581         .buffer_count = 0,
 582         .init_count = 20,
 583         .add_count = 5,
 584 };
 585
 586 static struct lpfc_hbq_init lpfc_extra_hbq = {
 587         .rn = 1,
 588         .entry_count = 200,
 589         .mask_count = 0,
 590         .profile = 0,
 591         .ring_mask = (1 << LPFC_EXTRA_RING),
 592         .buffer_count = 0,
 593         .init_count = 0,
 594         .add_count = 5,
 595 };
 596
 597 struct lpfc_hbq_init *lpfc_hbq_defs[] = {
 598         &lpfc_els_hbq,
 599         &lpfc_extra_hbq,
 600 };
 601
 602 static int
 603 lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
 604 {
 605         uint32_t i, start, end;
 606         struct hbq_dmabuf *hbq_buffer;
 607
 608         if (!phba->hbqs[hbqno].hbq_alloc_buffer) {
 609                 return 0;
 610         }
 611
 612         start = phba->hbqs[hbqno].buffer_count;
 613         end = count + start;
 614         if (end > lpfc_hbq_defs[hbqno]->entry_count) {
 615                 end = lpfc_hbq_defs[hbqno]->entry_count;
 616         }
 617
 618         /* Populate HBQ entries */
 619         for (i = start; i < end; i++) {
 620                 hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
 621                 if (!hbq_buffer)
 622                         return 1;
 623                 hbq_buffer->tag = (i | (hbqno << 16));
 624                 if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
 625                         phba->hbqs[hbqno].buffer_count++;
 626                 else
 627                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
 628         }
 629         return 0;
 630 }
 631
 632 int
 633 lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno)
 634 {
 635         return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
 636                                          lpfc_hbq_defs[qno]->add_count));
 637 }
 638
 639 static int
 640 lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
 641 {
 642         return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
 643                                          lpfc_hbq_defs[qno]->init_count));
 644 }
 645
 646 static struct hbq_dmabuf *
 647 lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
 648 {
 649         struct lpfc_dmabuf *d_buf;
 650         struct hbq_dmabuf *hbq_buf;
 651         uint32_t hbqno;
 652
 653         hbqno = tag >> 16;
 654         if (hbqno >= LPFC_MAX_HBQS)
 655                 return NULL;
 656
 657         list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) {
 658                 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
 659                 if (hbq_buf->tag == tag) {
 660                         return hbq_buf;
 661                 }
 662         }
 663         lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT,
 664                         "1803 Bad hbq tag. Data: x%x x%x\n",
 665                         tag, phba->hbqs[tag >> 16].buffer_count);
 666         return NULL;
 667 }
 668
 669 void
 670 lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer)
 671 {
 672         uint32_t hbqno;
 673
 674         if (hbq_buffer) {
 675                 hbqno = hbq_buffer->tag >> 16;
 676                 if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
 677                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
 678                 }
 679         }
 680 }
 681
 682 static int
 683 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
 684 {
 685         uint8_t ret;
 686
 687         switch (mbxCommand) {
 688         case MBX_LOAD_SM:
 689         case MBX_READ_NV:
 690         case MBX_WRITE_NV:
 691         case MBX_WRITE_VPARMS:
 692         case MBX_RUN_BIU_DIAG:
 693         case MBX_INIT_LINK:
 694         case MBX_DOWN_LINK:
 695         case MBX_CONFIG_LINK:
 696         case MBX_CONFIG_RING:
 697         case MBX_RESET_RING:
 698         case MBX_READ_CONFIG:
 699         case MBX_READ_RCONFIG:
 700         case MBX_READ_SPARM:
 701         case MBX_READ_STATUS:
 702         case MBX_READ_RPI:
 703         case MBX_READ_XRI:
 704         case MBX_READ_REV:
 705         case MBX_READ_LNK_STAT:
 706         case MBX_REG_LOGIN:
 707         case MBX_UNREG_LOGIN:
 708         case MBX_READ_LA:
 709         case MBX_CLEAR_LA:
 710         case MBX_DUMP_MEMORY:
 711         case MBX_DUMP_CONTEXT:
 712         case MBX_RUN_DIAGS:
 713         case MBX_RESTART:
 714         case MBX_UPDATE_CFG:
 715         case MBX_DOWN_LOAD:
 716         case MBX_DEL_LD_ENTRY:
 717         case MBX_RUN_PROGRAM:
 718         case MBX_SET_MASK:
 719         case MBX_SET_SLIM:
 720         case MBX_UNREG_D_ID:
 721         case MBX_KILL_BOARD:
 722         case MBX_CONFIG_FARP:
 723         case MBX_BEACON:
 724         case MBX_LOAD_AREA:
 725         case MBX_RUN_BIU_DIAG64:
 726         case MBX_CONFIG_PORT:
 727         case MBX_READ_SPARM64:
 728         case MBX_READ_RPI64:
 729         case MBX_REG_LOGIN64:
 730         case MBX_READ_LA64:
 731         case MBX_FLASH_WR_ULA:
 732         case MBX_SET_DEBUG:
 733         case MBX_LOAD_EXP_ROM:
 734         case MBX_ASYNCEVT_ENABLE:
 735         case MBX_REG_VPI:
 736         case MBX_UNREG_VPI:
 737         case MBX_HEARTBEAT:
 738                 ret = mbxCommand;
 739                 break;
 740         default:
 741                 ret = MBX_SHUTDOWN;
 742                 break;
 743         }
 744         return ret;
 745 }
 746 static void
 747 lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 748 {
 749         wait_queue_head_t *pdone_q;
 750         unsigned long drvr_flag;
 751
 752         /*
 753          * If pdone_q is empty, the driver thread gave up waiting and
 754          * continued running.
 755          */
 756         pmboxq->mbox_flag |= LPFC_MBX_WAKE;
 757         spin_lock_irqsave(&phba->hbalock, drvr_flag);
 758         pdone_q = (wait_queue_head_t *) pmboxq->context1;
 759         if (pdone_q)
 760                 wake_up_interruptible(pdone_q);
 761         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
 762         return;
 763 }
 764
 765 void
 766 lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 767 {
 768         struct lpfc_dmabuf *mp;
 769         uint16_t rpi;
 770         int rc;
 771
 772         mp = (struct lpfc_dmabuf *) (pmb->context1);
 773
 774         if (mp) {
 775                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 776                 kfree(mp);
 777         }
 778
 779         /*
 780          * If a REG_LOGIN succeeded  after node is destroyed or node
 781          * is in re-discovery driver need to cleanup the RPI.
 782          */
 783         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 784             pmb->mb.mbxCommand == MBX_REG_LOGIN64 &&
 785             !pmb->mb.mbxStatus) {
 786
 787                 rpi = pmb->mb.un.varWords[0];
 788                 lpfc_unreg_login(phba, pmb->mb.un.varRegLogin.vpi, rpi, pmb);
 789                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 790                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 791                 if (rc != MBX_NOT_FINISHED)
 792                         return;
 793         }
 794
 795         mempool_free(pmb, phba->mbox_mem_pool);
 796         return;
 797 }
 798
 799 int
 800 lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
 801 {
 802         MAILBOX_t *pmbox;
 803         LPFC_MBOXQ_t *pmb;
 804         int rc;
 805         LIST_HEAD(cmplq);
 806
 807         phba->sli.slistat.mbox_event++;
 808
 809         /* Get all completed mailboxe buffers into the cmplq */
 810         spin_lock_irq(&phba->hbalock);
 811         list_splice_init(&phba->sli.mboxq_cmpl, &cmplq);
 812         spin_unlock_irq(&phba->hbalock);
 813
 814         /* Get a Mailbox buffer to setup mailbox commands for callback */
 815         do {
 816                 list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list);
 817                 if (pmb == NULL)
 818                         break;
 819
 820                 pmbox = &pmb->mb;
 821
 822                 if (pmbox->mbxCommand != MBX_HEARTBEAT) {
 823                         if (pmb->vport) {
 824                                 lpfc_debugfs_disc_trc(pmb->vport,
 825                                         LPFC_DISC_TRC_MBOX_VPORT,
 826                                         "MBOX cmpl vport: cmd:x%x mb:x%x x%x",
 827                                         (uint32_t)pmbox->mbxCommand,
 828                                         pmbox->un.varWords[0],
 829                                         pmbox->un.varWords[1]);
 830                         }
 831                         else {
 832                                 lpfc_debugfs_disc_trc(phba->pport,
 833                                         LPFC_DISC_TRC_MBOX,
 834                                         "MBOX cmpl:       cmd:x%x mb:x%x x%x",
 835                                         (uint32_t)pmbox->mbxCommand,
 836                                         pmbox->un.varWords[0],
 837                                         pmbox->un.varWords[1]);
 838                         }
 839                 }
 840
 841                 /*
 842                  * It is a fatal error if unknown mbox command completion.
 843                  */
 844                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
 845                     MBX_SHUTDOWN) {
 846                         /* Unknow mailbox command compl */
 847                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
 848                                         "(%d):0323 Unknown Mailbox command "
 849                                         "%x Cmpl\n",
 850                                         pmb->vport ? pmb->vport->vpi : 0,
 851                                         pmbox->mbxCommand);
 852                         phba->link_state = LPFC_HBA_ERROR;
 853                         phba->work_hs = HS_FFER3;
 854                         lpfc_handle_eratt(phba);
 855                         continue;
 856                 }
 857
 858                 if (pmbox->mbxStatus) {
 859                         phba->sli.slistat.mbox_stat_err++;
 860                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
 861                                 /* Mbox cmd cmpl error - RETRYing */
 862                                 lpfc_printf_log(phba, KERN_INFO,
 863                                                 LOG_MBOX | LOG_SLI,
 864                                                 "(%d):0305 Mbox cmd cmpl "
 865                                                 "error - RETRYing Data: x%x "
 866                                                 "x%x x%x x%x\n",
 867                                                 pmb->vport ? pmb->vport->vpi :0,
 868                                                 pmbox->mbxCommand,
 869                                                 pmbox->mbxStatus,
 870                                                 pmbox->un.varWords[0],
 871                                                 pmb->vport->port_state);
 872                                 pmbox->mbxStatus = 0;
 873                                 pmbox->mbxOwner = OWN_HOST;
 874                                 spin_lock_irq(&phba->hbalock);
 875                                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 876                                 spin_unlock_irq(&phba->hbalock);
 877                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 878                                 if (rc == MBX_SUCCESS)
 879                                         continue;
 880                         }
 881                 }
 882
 883                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
 884                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
 885                                 "(%d):0307 Mailbox cmd x%x Cmpl x%p "
 886                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
 887                                 pmb->vport ? pmb->vport->vpi : 0,
 888                                 pmbox->mbxCommand,
 889                                 pmb->mbox_cmpl,
 890                                 *((uint32_t *) pmbox),
 891                                 pmbox->un.varWords[0],
 892                                 pmbox->un.varWords[1],
 893                                 pmbox->un.varWords[2],
 894                                 pmbox->un.varWords[3],
 895                                 pmbox->un.varWords[4],
 896                                 pmbox->un.varWords[5],
 897                                 pmbox->un.varWords[6],
 898                                 pmbox->un.varWords[7]);
 899
 900                 if (pmb->mbox_cmpl)
 901                         pmb->mbox_cmpl(phba,pmb);
 902         } while (1);
 903         return 0;
 904 }
 905
 906 static struct lpfc_dmabuf *
 907 lpfc_sli_replace_hbqbuff(struct lpfc_hba *phba, uint32_t tag)
 908 {
 909         struct hbq_dmabuf *hbq_entry, *new_hbq_entry;
 910         uint32_t hbqno;
 911         void *virt;             /* virtual address ptr */
 912         dma_addr_t phys;        /* mapped address */
 913
 914         hbq_entry = lpfc_sli_hbqbuf_find(phba, tag);
 915         if (hbq_entry == NULL)
 916                 return NULL;
 917         list_del(&hbq_entry->dbuf.list);
 918
 919         hbqno = tag >> 16;
 920         new_hbq_entry = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
 921         if (new_hbq_entry == NULL)
 922                 return &hbq_entry->dbuf;
 923         new_hbq_entry->tag = -1;
 924         phys = new_hbq_entry->dbuf.phys;
 925         virt = new_hbq_entry->dbuf.virt;
 926         new_hbq_entry->dbuf.phys = hbq_entry->dbuf.phys;
 927         new_hbq_entry->dbuf.virt = hbq_entry->dbuf.virt;
 928         hbq_entry->dbuf.phys = phys;
 929         hbq_entry->dbuf.virt = virt;
 930         lpfc_sli_free_hbq(phba, hbq_entry);
 931         return &new_hbq_entry->dbuf;
 932 }
 933
 934 static struct lpfc_dmabuf *
 935 lpfc_sli_get_buff(struct lpfc_hba *phba,
 936                         struct lpfc_sli_ring *pring,
 937                         uint32_t tag)
 938 {
 939         if (tag & QUE_BUFTAG_BIT)
 940                 return lpfc_sli_ring_taggedbuf_get(phba, pring, tag);
 941         else
 942                 return lpfc_sli_replace_hbqbuff(phba, tag);
 943 }
 944
 945 static int
 946 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 947                             struct lpfc_iocbq *saveq)
 948 {
 949         IOCB_t           * irsp;
 950         WORD5            * w5p;
 951         uint32_t           Rctl, Type;
 952         uint32_t           match, i;
 953         struct lpfc_iocbq *iocbq;
 954
 955         match = 0;
 956         irsp = &(saveq->iocb);
 957
 958         if (irsp->ulpCommand == CMD_ASYNC_STATUS) {
 959                 if (pring->lpfc_sli_rcv_async_status)
 960                         pring->lpfc_sli_rcv_async_status(phba, pring, saveq);
 961                 else
 962                         lpfc_printf_log(phba,
 963                                         KERN_WARNING,
 964                                         LOG_SLI,
 965                                         "0316 Ring %d handler: unexpected "
 966                                         "ASYNC_STATUS iocb received evt_code "
 967                                         "0x%x\n",
 968                                         pring->ringno,
 969                                         irsp->un.asyncstat.evt_code);
 970                 return 1;
 971         }
 972
 973         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
 974             || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)
 975             || (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)
 976             || (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX)) {
 977                 Rctl = FC_ELS_REQ;
 978                 Type = FC_ELS_DATA;
 979         } else {
 980                 w5p =
 981                     (WORD5 *) & (saveq->iocb.un.
 982                                  ulpWord[5]);
 983                 Rctl = w5p->hcsw.Rctl;
 984                 Type = w5p->hcsw.Type;
 985
 986                 /* Firmware Workaround */
 987                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
 988                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX ||
 989                          irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
 990                         Rctl = FC_ELS_REQ;
 991                         Type = FC_ELS_DATA;
 992                         w5p->hcsw.Rctl = Rctl;
 993                         w5p->hcsw.Type = Type;
 994                 }
 995         }
 996
 997         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
 998                 struct lpfc_hbq_entry *hbqe_1, *hbqe_2;
 999                 hbqe_1 = (struct lpfc_hbq_entry *) &saveq->iocb.un.ulpWord[0];
1000                 hbqe_2 = (struct lpfc_hbq_entry *) &saveq->iocb.
1001                                 unsli3.sli3Words[4];
1002
1003                 if (irsp->ulpBdeCount != 0) {
1004                         saveq->context2 = lpfc_sli_get_buff(phba, pring,
1005                                                 irsp->un.ulpWord[3]);
1006                         if (!saveq->context2)
1007                                 lpfc_printf_log(phba,
1008                                         KERN_ERR,
1009                                         LOG_SLI,
1010                                         "0341 Ring %d Cannot find buffer for "
1011                                         "an unsolicited iocb. tag 0x%x\n",
1012                                         pring->ringno,
1013                                         irsp->un.ulpWord[3]);
1014
1015                 }
1016                 if (irsp->ulpBdeCount == 2) {
1017                         saveq->context3 = lpfc_sli_get_buff(phba, pring,
1018                                                 irsp->unsli3.sli3Words[7]);
1019                         if (!saveq->context3)
1020                                 lpfc_printf_log(phba,
1021                                         KERN_ERR,
1022                                         LOG_SLI,
1023                                         "0342 Ring %d Cannot find buffer for an"
1024                                         " unsolicited iocb. tag 0x%x\n",
1025                                         pring->ringno,
1026                                         irsp->unsli3.sli3Words[7]);
1027                 }
1028                 list_for_each_entry(iocbq, &saveq->list, list) {
1029                         hbqe_1 = (struct lpfc_hbq_entry *) &iocbq->iocb.
1030                                 un.ulpWord[0];
1031                         hbqe_2 = (struct lpfc_hbq_entry *) &iocbq->iocb.
1032                                 unsli3.sli3Words[4];
1033                         irsp = &(iocbq->iocb);
1034
1035                         if (irsp->ulpBdeCount != 0) {
1036                                 iocbq->context2 = lpfc_sli_get_buff(phba, pring,
1037                                                         irsp->un.ulpWord[3]);
1038                                 if (!saveq->context2)
1039                                         lpfc_printf_log(phba,
1040                                                 KERN_ERR,
1041                                                 LOG_SLI,
1042                                                 "0343 Ring %d Cannot find "
1043                                                 "buffer for an unsolicited iocb"
1044                                                 ". tag 0x%x\n", pring->ringno,
1045                                                 irsp->un.ulpWord[3]);
1046                         }
1047                         if (irsp->ulpBdeCount == 2) {
1048                                 iocbq->context3 = lpfc_sli_get_buff(phba, pring,
1049                                                 irsp->unsli3.sli3Words[7]);
1050                                 if (!saveq->context3)
1051                                         lpfc_printf_log(phba,
1052                                                 KERN_ERR,
1053                                                 LOG_SLI,
1054                                                 "0344 Ring %d Cannot find "
1055                                                 "buffer for an unsolicited "
1056                                                 "iocb. tag 0x%x\n",
1057                                                 pring->ringno,
1058                                                 irsp->unsli3.sli3Words[7]);
1059                         }
1060                 }
1061         }
1062
1063         /* unSolicited Responses */
1064         if (pring->prt[0].profile) {
1065                 if (pring->prt[0].lpfc_sli_rcv_unsol_event)
1066                         (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
1067                                                                         saveq);
1068                 match = 1;
1069         } else {
1070                 /* We must search, based on rctl / type
1071                    for the right routine */
1072                 for (i = 0; i < pring->num_mask;
1073                      i++) {
1074                         if ((pring->prt[i].rctl ==
1075                              Rctl)
1076                             && (pring->prt[i].
1077                                 type == Type)) {
1078                                 if (pring->prt[i].lpfc_sli_rcv_unsol_event)
1079                                         (pring->prt[i].lpfc_sli_rcv_unsol_event)
1080                                                         (phba, pring, saveq);
1081                                 match = 1;
1082                                 break;
1083                         }
1084                 }
1085         }
1086         if (match == 0) {
1087                 /* Unexpected Rctl / Type received */
1088                 /* Ring <ringno> handler: unexpected
1089                    Rctl <Rctl> Type <Type> received */
1090                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1091                                 "0313 Ring %d handler: unexpected Rctl x%x "
1092                                 "Type x%x received\n",
1093                                 pring->ringno, Rctl, Type);
1094         }
1095         return 1;
1096 }
1097
1098 static struct lpfc_iocbq *
1099 lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
1100                       struct lpfc_sli_ring *pring,
1101                       struct lpfc_iocbq *prspiocb)
1102 {
1103         struct lpfc_iocbq *cmd_iocb = NULL;
1104         uint16_t iotag;
1105
1106         iotag = prspiocb->iocb.ulpIoTag;
1107
1108         if (iotag != 0 && iotag <= phba->sli.last_iotag) {
1109                 cmd_iocb = phba->sli.iocbq_lookup[iotag];
1110                 list_del_init(&cmd_iocb->list);
1111                 pring->txcmplq_cnt--;
1112                 return cmd_iocb;
1113         }
1114
1115         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1116                         "0317 iotag x%x is out off "
1117                         "range: max iotag x%x wd0 x%x\n",
1118                         iotag, phba->sli.last_iotag,
1119                         *(((uint32_t *) &prspiocb->iocb) + 7));
1120         return NULL;
1121 }
1122
1123 static int
1124 lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1125                           struct lpfc_iocbq *saveq)
1126 {
1127         struct lpfc_iocbq *cmdiocbp;
1128         int rc = 1;
1129         unsigned long iflag;
1130
1131         /* Based on the iotag field, get the cmd IOCB from the txcmplq */
1132         spin_lock_irqsave(&phba->hbalock, iflag);
1133         cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
1134         spin_unlock_irqrestore(&phba->hbalock, iflag);
1135
1136         if (cmdiocbp) {
1137                 if (cmdiocbp->iocb_cmpl) {
1138                         /*
1139                          * Post all ELS completions to the worker thread.
1140                          * All other are passed to the completion callback.
1141                          */
1142                         if (pring->ringno == LPFC_ELS_RING) {
1143                                 if (cmdiocbp->iocb_flag & LPFC_DRIVER_ABORTED) {
1144                                         cmdiocbp->iocb_flag &=
1145                                                 ~LPFC_DRIVER_ABORTED;
1146                                         saveq->iocb.ulpStatus =
1147                                                 IOSTAT_LOCAL_REJECT;
1148                                         saveq->iocb.un.ulpWord[4] =
1149                                                 IOERR_SLI_ABORTED;
1150
1151                                         /* Firmware could still be in progress
1152                                          * of DMAing payload, so don't free data
1153                                          * buffer till after a hbeat.
1154                                          */
1155                                         saveq->iocb_flag |= LPFC_DELAY_MEM_FREE;
1156                                 }
1157                         }
1158                         (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
1159                 } else
1160                         lpfc_sli_release_iocbq(phba, cmdiocbp);
1161         } else {
1162                 /*
1163                  * Unknown initiating command based on the response iotag.
1164                  * This could be the case on the ELS ring because of
1165                  * lpfc_els_abort().
1166                  */
1167                 if (pring->ringno != LPFC_ELS_RING) {
1168                         /*
1169                          * Ring <ringno> handler: unexpected completion IoTag
1170                          * <IoTag>
1171                          */
1172                         lpfc_printf_vlog(cmdiocbp->vport, KERN_WARNING, LOG_SLI,
1173                                          "0322 Ring %d handler: "
1174                                          "unexpected completion IoTag x%x "
1175                                          "Data: x%x x%x x%x x%x\n",
1176                                          pring->ringno,
1177                                          saveq->iocb.ulpIoTag,
1178                                          saveq->iocb.ulpStatus,
1179                                          saveq->iocb.un.ulpWord[4],
1180                                          saveq->iocb.ulpCommand,
1181                                          saveq->iocb.ulpContext);
1182                 }
1183         }
1184
1185         return rc;
1186 }
1187
1188 static void
1189 lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1190 {
1191         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1192                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1193                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1194         /*
1195          * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1196          * rsp ring <portRspMax>
1197          */
1198         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1199                         "0312 Ring %d handler: portRspPut %d "
1200                         "is bigger then rsp ring %d\n",
1201                         pring->ringno, le32_to_cpu(pgp->rspPutInx),
1202                         pring->numRiocb);
1203
1204         phba->link_state = LPFC_HBA_ERROR;
1205
1206         /*
1207          * All error attention handlers are posted to
1208          * worker thread
1209          */
1210         phba->work_ha |= HA_ERATT;
1211         phba->work_hs = HS_FFER3;
1212
1213         /* hbalock should already be held */
1214         if (phba->work_wait)
1215                 lpfc_worker_wake_up(phba);
1216
1217         return;
1218 }
1219
1220 void lpfc_sli_poll_fcp_ring(struct lpfc_hba *phba)
1221 {
1222         struct lpfc_sli      *psli  = &phba->sli;
1223         struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
1224         IOCB_t *irsp = NULL;
1225         IOCB_t *entry = NULL;
1226         struct lpfc_iocbq *cmdiocbq = NULL;
1227         struct lpfc_iocbq rspiocbq;
1228         struct lpfc_pgp *pgp;
1229         uint32_t status;
1230         uint32_t portRspPut, portRspMax;
1231         int type;
1232         uint32_t rsp_cmpl = 0;
1233         uint32_t ha_copy;
1234         unsigned long iflags;
1235
1236         pring->stats.iocb_event++;
1237
1238         pgp = (phba->sli_rev == 3) ?
1239                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1240                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1241
1242
1243         /*
1244          * The next available response entry should never exceed the maximum
1245          * entries.  If it does, treat it as an adapter hardware error.
1246          */
1247         portRspMax = pring->numRiocb;
1248         portRspPut = le32_to_cpu(pgp->rspPutInx);
1249         if (unlikely(portRspPut >= portRspMax)) {
1250                 lpfc_sli_rsp_pointers_error(phba, pring);
1251                 return;
1252         }
1253
1254         rmb();
1255         while (pring->rspidx != portRspPut) {
1256                 entry = lpfc_resp_iocb(phba, pring);
1257                 if (++pring->rspidx >= portRspMax)
1258                         pring->rspidx = 0;
1259
1260                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1261                                       (uint32_t *) &rspiocbq.iocb,
1262                                       phba->iocb_rsp_size);
1263                 irsp = &rspiocbq.iocb;
1264                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1265                 pring->stats.iocb_rsp++;
1266                 rsp_cmpl++;
1267
1268                 if (unlikely(irsp->ulpStatus)) {
1269                         /* Rsp ring <ringno> error: IOCB */
1270                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1271                                         "0326 Rsp Ring %d error: IOCB Data: "
1272                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1273                                         pring->ringno,
1274                                         irsp->un.ulpWord[0],
1275                                         irsp->un.ulpWord[1],
1276                                         irsp->un.ulpWord[2],
1277                                         irsp->un.ulpWord[3],
1278                                         irsp->un.ulpWord[4],
1279                                         irsp->un.ulpWord[5],
1280                                         *(((uint32_t *) irsp) + 6),
1281                                         *(((uint32_t *) irsp) + 7));
1282                 }
1283
1284                 switch (type) {
1285                 case LPFC_ABORT_IOCB:
1286                 case LPFC_SOL_IOCB:
1287                         /*
1288                          * Idle exchange closed via ABTS from port.  No iocb
1289                          * resources need to be recovered.
1290                          */
1291                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1292                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1293                                                 "0314 IOCB cmd 0x%x "
1294                                                 "processed. Skipping "
1295                                                 "completion",
1296                                                 irsp->ulpCommand);
1297                                 break;
1298                         }
1299
1300                         spin_lock_irqsave(&phba->hbalock, iflags);
1301                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1302                                                          &rspiocbq);
1303                         spin_unlock_irqrestore(&phba->hbalock, iflags);
1304                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1305                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1306                                                       &rspiocbq);
1307                         }
1308                         break;
1309                 default:
1310                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1311                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1312                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1313                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1314                                        MAX_MSG_DATA);
1315                                 dev_warn(&((phba->pcidev)->dev),
1316                                          "lpfc%d: %s\n",
1317                                          phba->brd_no, adaptermsg);
1318                         } else {
1319                                 /* Unknown IOCB command */
1320                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1321                                                 "0321 Unknown IOCB command "
1322                                                 "Data: x%x, x%x x%x x%x x%x\n",
1323                                                 type, irsp->ulpCommand,
1324                                                 irsp->ulpStatus,
1325                                                 irsp->ulpIoTag,
1326                                                 irsp->ulpContext);
1327                         }
1328                         break;
1329                 }
1330
1331                 /*
1332                  * The response IOCB has been processed.  Update the ring
1333                  * pointer in SLIM.  If the port response put pointer has not
1334                  * been updated, sync the pgp->rspPutInx and fetch the new port
1335                  * response put pointer.
1336                  */
1337                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1338
1339                 if (pring->rspidx == portRspPut)
1340                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1341         }
1342
1343         ha_copy = readl(phba->HAregaddr);
1344         ha_copy >>= (LPFC_FCP_RING * 4);
1345
1346         if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
1347                 spin_lock_irqsave(&phba->hbalock, iflags);
1348                 pring->stats.iocb_rsp_full++;
1349                 status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
1350                 writel(status, phba->CAregaddr);
1351                 readl(phba->CAregaddr);
1352                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1353         }
1354         if ((ha_copy & HA_R0CE_RSP) &&
1355             (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1356                 spin_lock_irqsave(&phba->hbalock, iflags);
1357                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1358                 pring->stats.iocb_cmd_empty++;
1359
1360                 /* Force update of the local copy of cmdGetInx */
1361                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1362                 lpfc_sli_resume_iocb(phba, pring);
1363
1364                 if ((pring->lpfc_sli_cmd_available))
1365                         (pring->lpfc_sli_cmd_available) (phba, pring);
1366
1367                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1368         }
1369
1370         return;
1371 }
1372
1373 /*
1374  * This routine presumes LPFC_FCP_RING handling and doesn't bother
1375  * to check it explicitly.
1376  */
1377 static int
1378 lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
1379                                 struct lpfc_sli_ring *pring, uint32_t mask)
1380 {
1381         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1382                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1383                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1384         IOCB_t *irsp = NULL;
1385         IOCB_t *entry = NULL;
1386         struct lpfc_iocbq *cmdiocbq = NULL;
1387         struct lpfc_iocbq rspiocbq;
1388         uint32_t status;
1389         uint32_t portRspPut, portRspMax;
1390         int rc = 1;
1391         lpfc_iocb_type type;
1392         unsigned long iflag;
1393         uint32_t rsp_cmpl = 0;
1394
1395         spin_lock_irqsave(&phba->hbalock, iflag);
1396         pring->stats.iocb_event++;
1397
1398         /*
1399          * The next available response entry should never exceed the maximum
1400          * entries.  If it does, treat it as an adapter hardware error.
1401          */
1402         portRspMax = pring->numRiocb;
1403         portRspPut = le32_to_cpu(pgp->rspPutInx);
1404         if (unlikely(portRspPut >= portRspMax)) {
1405                 lpfc_sli_rsp_pointers_error(phba, pring);
1406                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1407                 return 1;
1408         }
1409
1410         rmb();
1411         while (pring->rspidx != portRspPut) {
1412                 /*
1413                  * Fetch an entry off the ring and copy it into a local data
1414                  * structure.  The copy involves a byte-swap since the
1415                  * network byte order and pci byte orders are different.
1416                  */
1417                 entry = lpfc_resp_iocb(phba, pring);
1418                 phba->last_completion_time = jiffies;
1419
1420                 if (++pring->rspidx >= portRspMax)
1421                         pring->rspidx = 0;
1422
1423                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1424                                       (uint32_t *) &rspiocbq.iocb,
1425                                       phba->iocb_rsp_size);
1426                 INIT_LIST_HEAD(&(rspiocbq.list));
1427                 irsp = &rspiocbq.iocb;
1428
1429                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1430                 pring->stats.iocb_rsp++;
1431                 rsp_cmpl++;
1432
1433                 if (unlikely(irsp->ulpStatus)) {
1434                         /*
1435                          * If resource errors reported from HBA, reduce
1436                          * queuedepths of the SCSI device.
1437                          */
1438                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1439                                 (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
1440                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1441                                 lpfc_adjust_queue_depth(phba);
1442                                 spin_lock_irqsave(&phba->hbalock, iflag);
1443                         }
1444
1445                         /* Rsp ring <ringno> error: IOCB */
1446                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1447                                         "0336 Rsp Ring %d error: IOCB Data: "
1448                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1449                                         pring->ringno,
1450                                         irsp->un.ulpWord[0],
1451                                         irsp->un.ulpWord[1],
1452                                         irsp->un.ulpWord[2],
1453                                         irsp->un.ulpWord[3],
1454                                         irsp->un.ulpWord[4],
1455                                         irsp->un.ulpWord[5],
1456                                         *(((uint32_t *) irsp) + 6),
1457                                         *(((uint32_t *) irsp) + 7));
1458                 }
1459
1460                 switch (type) {
1461                 case LPFC_ABORT_IOCB:
1462                 case LPFC_SOL_IOCB:
1463                         /*
1464                          * Idle exchange closed via ABTS from port.  No iocb
1465                          * resources need to be recovered.
1466                          */
1467                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1468                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1469                                                 "0333 IOCB cmd 0x%x"
1470                                                 " processed. Skipping"
1471                                                 " completion\n",
1472                                                 irsp->ulpCommand);
1473                                 break;
1474                         }
1475
1476                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1477                                                          &rspiocbq);
1478                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1479                                 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
1480                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1481                                                               &rspiocbq);
1482                                 } else {
1483                                         spin_unlock_irqrestore(&phba->hbalock,
1484                                                                iflag);
1485                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1486                                                               &rspiocbq);
1487                                         spin_lock_irqsave(&phba->hbalock,
1488                                                           iflag);
1489                                 }
1490                         }
1491                         break;
1492                 case LPFC_UNSOL_IOCB:
1493                         spin_unlock_irqrestore(&phba->hbalock, iflag);
1494                         lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
1495                         spin_lock_irqsave(&phba->hbalock, iflag);
1496                         break;
1497                 default:
1498                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1499                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1500                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1501                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1502                                        MAX_MSG_DATA);
1503                                 dev_warn(&((phba->pcidev)->dev),
1504                                          "lpfc%d: %s\n",
1505                                          phba->brd_no, adaptermsg);
1506                         } else {
1507                                 /* Unknown IOCB command */
1508                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1509                                                 "0334 Unknown IOCB command "
1510                                                 "Data: x%x, x%x x%x x%x x%x\n",
1511                                                 type, irsp->ulpCommand,
1512                                                 irsp->ulpStatus,
1513                                                 irsp->ulpIoTag,
1514                                                 irsp->ulpContext);
1515                         }
1516                         break;
1517                 }
1518
1519                 /*
1520                  * The response IOCB has been processed.  Update the ring
1521                  * pointer in SLIM.  If the port response put pointer has not
1522                  * been updated, sync the pgp->rspPutInx and fetch the new port
1523                  * response put pointer.
1524                  */
1525                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1526
1527                 if (pring->rspidx == portRspPut)
1528                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1529         }
1530
1531         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1532                 pring->stats.iocb_rsp_full++;
1533                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1534                 writel(status, phba->CAregaddr);
1535                 readl(phba->CAregaddr);
1536         }
1537         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1538                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1539                 pring->stats.iocb_cmd_empty++;
1540
1541                 /* Force update of the local copy of cmdGetInx */
1542                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1543                 lpfc_sli_resume_iocb(phba, pring);
1544
1545                 if ((pring->lpfc_sli_cmd_available))
1546                         (pring->lpfc_sli_cmd_available) (phba, pring);
1547
1548         }
1549
1550         spin_unlock_irqrestore(&phba->hbalock, iflag);
1551         return rc;
1552 }
1553
1554 int
1555 lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
1556                                 struct lpfc_sli_ring *pring, uint32_t mask)
1557 {
1558         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1559                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1560                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1561         IOCB_t *entry;
1562         IOCB_t *irsp = NULL;
1563         struct lpfc_iocbq *rspiocbp = NULL;
1564         struct lpfc_iocbq *next_iocb;
1565         struct lpfc_iocbq *cmdiocbp;
1566         struct lpfc_iocbq *saveq;
1567         uint8_t iocb_cmd_type;
1568         lpfc_iocb_type type;
1569         uint32_t status, free_saveq;
1570         uint32_t portRspPut, portRspMax;
1571         int rc = 1;
1572         unsigned long iflag;
1573
1574         spin_lock_irqsave(&phba->hbalock, iflag);
1575         pring->stats.iocb_event++;
1576
1577         /*
1578          * The next available response entry should never exceed the maximum
1579          * entries.  If it does, treat it as an adapter hardware error.
1580          */
1581         portRspMax = pring->numRiocb;
1582         portRspPut = le32_to_cpu(pgp->rspPutInx);
1583         if (portRspPut >= portRspMax) {
1584                 /*
1585                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1586                  * rsp ring <portRspMax>
1587                  */
1588                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1589                                 "0303 Ring %d handler: portRspPut %d "
1590                                 "is bigger then rsp ring %d\n",
1591                                 pring->ringno, portRspPut, portRspMax);
1592
1593                 phba->link_state = LPFC_HBA_ERROR;
1594                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1595
1596                 phba->work_hs = HS_FFER3;
1597                 lpfc_handle_eratt(phba);
1598
1599                 return 1;
1600         }
1601
1602         rmb();
1603         while (pring->rspidx != portRspPut) {
1604                 /*
1605                  * Build a completion list and call the appropriate handler.
1606                  * The process is to get the next available response iocb, get
1607                  * a free iocb from the list, copy the response data into the
1608                  * free iocb, insert to the continuation list, and update the
1609                  * next response index to slim.  This process makes response
1610                  * iocb's in the ring available to DMA as fast as possible but
1611                  * pays a penalty for a copy operation.  Since the iocb is
1612                  * only 32 bytes, this penalty is considered small relative to
1613                  * the PCI reads for register values and a slim write.  When
1614                  * the ulpLe field is set, the entire Command has been
1615                  * received.
1616                  */
1617                 entry = lpfc_resp_iocb(phba, pring);
1618
1619                 phba->last_completion_time = jiffies;
1620                 rspiocbp = __lpfc_sli_get_iocbq(phba);
1621                 if (rspiocbp == NULL) {
1622                         printk(KERN_ERR "%s: out of buffers! Failing "
1623                                "completion.\n", __FUNCTION__);
1624                         break;
1625                 }
1626
1627                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb,
1628                                       phba->iocb_rsp_size);
1629                 irsp = &rspiocbp->iocb;
1630
1631                 if (++pring->rspidx >= portRspMax)
1632                         pring->rspidx = 0;
1633
1634                 if (pring->ringno == LPFC_ELS_RING) {
1635                         lpfc_debugfs_slow_ring_trc(phba,
1636                         "IOCB rsp ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
1637                                 *(((uint32_t *) irsp) + 4),
1638                                 *(((uint32_t *) irsp) + 6),
1639                                 *(((uint32_t *) irsp) + 7));
1640                 }
1641
1642                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1643
1644                 if (list_empty(&(pring->iocb_continueq))) {
1645                         list_add(&rspiocbp->list, &(pring->iocb_continueq));
1646                 } else {
1647                         list_add_tail(&rspiocbp->list,
1648                                       &(pring->iocb_continueq));
1649                 }
1650
1651                 pring->iocb_continueq_cnt++;
1652                 if (irsp->ulpLe) {
1653                         /*
1654                          * By default, the driver expects to free all resources
1655                          * associated with this iocb completion.
1656                          */
1657                         free_saveq = 1;
1658                         saveq = list_get_first(&pring->iocb_continueq,
1659                                                struct lpfc_iocbq, list);
1660                         irsp = &(saveq->iocb);
1661                         list_del_init(&pring->iocb_continueq);
1662                         pring->iocb_continueq_cnt = 0;
1663
1664                         pring->stats.iocb_rsp++;
1665
1666                         /*
1667                          * If resource errors reported from HBA, reduce
1668                          * queuedepths of the SCSI device.
1669                          */
1670                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1671                              (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
1672                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1673                                 lpfc_adjust_queue_depth(phba);
1674                                 spin_lock_irqsave(&phba->hbalock, iflag);
1675                         }
1676
1677                         if (irsp->ulpStatus) {
1678                                 /* Rsp ring <ringno> error: IOCB */
1679                                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1680                                                 "0328 Rsp Ring %d error: "
1681                                                 "IOCB Data: "
1682                                                 "x%x x%x x%x x%x "
1683                                                 "x%x x%x x%x x%x "
1684                                                 "x%x x%x x%x x%x "
1685                                                 "x%x x%x x%x x%x\n",
1686                                                 pring->ringno,
1687                                                 irsp->un.ulpWord[0],
1688                                                 irsp->un.ulpWord[1],
1689                                                 irsp->un.ulpWord[2],
1690                                                 irsp->un.ulpWord[3],
1691                                                 irsp->un.ulpWord[4],
1692                                                 irsp->un.ulpWord[5],
1693                                                 *(((uint32_t *) irsp) + 6),
1694                                                 *(((uint32_t *) irsp) + 7),
1695                                                 *(((uint32_t *) irsp) + 8),
1696                                                 *(((uint32_t *) irsp) + 9),
1697                                                 *(((uint32_t *) irsp) + 10),
1698                                                 *(((uint32_t *) irsp) + 11),
1699                                                 *(((uint32_t *) irsp) + 12),
1700                                                 *(((uint32_t *) irsp) + 13),
1701                                                 *(((uint32_t *) irsp) + 14),
1702                                                 *(((uint32_t *) irsp) + 15));
1703                         }
1704
1705                         /*
1706                          * Fetch the IOCB command type and call the correct
1707                          * completion routine.  Solicited and Unsolicited
1708                          * IOCBs on the ELS ring get freed back to the
1709                          * lpfc_iocb_list by the discovery kernel thread.
1710                          */
1711                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1712                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1713                         if (type == LPFC_SOL_IOCB) {
1714                                 spin_unlock_irqrestore(&phba->hbalock,
1715                                                        iflag);
1716                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1717                                                                saveq);
1718                                 spin_lock_irqsave(&phba->hbalock, iflag);
1719                         } else if (type == LPFC_UNSOL_IOCB) {
1720                                 spin_unlock_irqrestore(&phba->hbalock,
1721                                                        iflag);
1722                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1723                                                                  saveq);
1724                                 spin_lock_irqsave(&phba->hbalock, iflag);
1725                         } else if (type == LPFC_ABORT_IOCB) {
1726                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1727                                     ((cmdiocbp =
1728                                       lpfc_sli_iocbq_lookup(phba, pring,
1729                                                             saveq)))) {
1730                                         /* Call the specified completion
1731                                            routine */
1732                                         if (cmdiocbp->iocb_cmpl) {
1733                                                 spin_unlock_irqrestore(
1734                                                        &phba->hbalock,
1735                                                        iflag);
1736                                                 (cmdiocbp->iocb_cmpl) (phba,
1737                                                              cmdiocbp, saveq);
1738                                                 spin_lock_irqsave(
1739                                                           &phba->hbalock,
1740                                                           iflag);
1741                                         } else
1742                                                 __lpfc_sli_release_iocbq(phba,
1743                                                                       cmdiocbp);
1744                                 }
1745                         } else if (type == LPFC_UNKNOWN_IOCB) {
1746                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1747
1748                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1749
1750                                         memset(adaptermsg, 0,
1751                                                LPFC_MAX_ADPTMSG);
1752                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1753                                                MAX_MSG_DATA);
1754                                         dev_warn(&((phba->pcidev)->dev),
1755                                                  "lpfc%d: %s\n",
1756                                                  phba->brd_no, adaptermsg);
1757                                 } else {
1758                                         /* Unknown IOCB command */
1759                                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1760                                                         "0335 Unknown IOCB "
1761                                                         "command Data: x%x "
1762                                                         "x%x x%x x%x\n",
1763                                                         irsp->ulpCommand,
1764                                                         irsp->ulpStatus,
1765                                                         irsp->ulpIoTag,
1766                                                         irsp->ulpContext);
1767                                 }
1768                         }
1769
1770                         if (free_saveq) {
1771                                 list_for_each_entry_safe(rspiocbp, next_iocb,
1772                                                          &saveq->list, list) {
1773                                         list_del(&rspiocbp->list);
1774                                         __lpfc_sli_release_iocbq(phba,
1775                                                                  rspiocbp);
1776                                 }
1777                                 __lpfc_sli_release_iocbq(phba, saveq);
1778                         }
1779                         rspiocbp = NULL;
1780                 }
1781
1782                 /*
1783                  * If the port response put pointer has not been updated, sync
1784                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1785                  * response put pointer.
1786                  */
1787                 if (pring->rspidx == portRspPut) {
1788                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1789                 }
1790         } /* while (pring->rspidx != portRspPut) */
1791
1792         if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) {
1793                 /* At least one response entry has been freed */
1794                 pring->stats.iocb_rsp_full++;
1795                 /* SET RxRE_RSP in Chip Att register */
1796                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1797                 writel(status, phba->CAregaddr);
1798                 readl(phba->CAregaddr); /* flush */
1799         }
1800         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1801                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1802                 pring->stats.iocb_cmd_empty++;
1803
1804                 /* Force update of the local copy of cmdGetInx */
1805                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1806                 lpfc_sli_resume_iocb(phba, pring);
1807
1808                 if ((pring->lpfc_sli_cmd_available))
1809                         (pring->lpfc_sli_cmd_available) (phba, pring);
1810
1811         }
1812
1813         spin_unlock_irqrestore(&phba->hbalock, iflag);
1814         return rc;
1815 }
1816
1817 void
1818 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1819 {
1820         LIST_HEAD(completions);
1821         struct lpfc_iocbq *iocb, *next_iocb;
1822         IOCB_t *cmd = NULL;
1823
1824         if (pring->ringno == LPFC_ELS_RING) {
1825                 lpfc_fabric_abort_hba(phba);
1826         }
1827
1828         /* Error everything on txq and txcmplq
1829          * First do the txq.
1830          */
1831         spin_lock_irq(&phba->hbalock);
1832         list_splice_init(&pring->txq, &completions);
1833         pring->txq_cnt = 0;
1834
1835         /* Next issue ABTS for everything on the txcmplq */
1836         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list)
1837                 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
1838
1839         spin_unlock_irq(&phba->hbalock);
1840
1841         while (!list_empty(&completions)) {
1842                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1843                 cmd = &iocb->iocb;
1844                 list_del_init(&iocb->list);
1845
1846                 if (!iocb->iocb_cmpl)
1847                         lpfc_sli_release_iocbq(phba, iocb);
1848                 else {
1849                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1850                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1851                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1852                 }
1853         }
1854 }
1855
1856 int
1857 lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
1858 {
1859         uint32_t status;
1860         int i = 0;
1861         int retval = 0;
1862
1863         /* Read the HBA Host Status Register */
1864         status = readl(phba->HSregaddr);
1865
1866         /*
1867          * Check status register every 100ms for 5 retries, then every
1868          * 500ms for 5, then every 2.5 sec for 5, then reset board and
1869          * every 2.5 sec for 4.
1870          * Break our of the loop if errors occurred during init.
1871          */
1872         while (((status & mask) != mask) &&
1873                !(status & HS_FFERM) &&
1874                i++ < 20) {
1875
1876                 if (i <= 5)
1877                         msleep(10);
1878                 else if (i <= 10)
1879                         msleep(500);
1880                 else
1881                         msleep(2500);
1882
1883                 if (i == 15) {
1884                                 /* Do post */
1885                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1886                         lpfc_sli_brdrestart(phba);
1887                 }
1888                 /* Read the HBA Host Status Register */
1889                 status = readl(phba->HSregaddr);
1890         }
1891
1892         /* Check to see if any errors occurred during init */
1893         if ((status & HS_FFERM) || (i >= 20)) {
1894                 phba->link_state = LPFC_HBA_ERROR;
1895                 retval = 1;
1896         }
1897
1898         return retval;
1899 }
1900
1901 #define BARRIER_TEST_PATTERN (0xdeadbeef)
1902
1903 void lpfc_reset_barrier(struct lpfc_hba *phba)
1904 {
1905         uint32_t __iomem *resp_buf;
1906         uint32_t __iomem *mbox_buf;
1907         volatile uint32_t mbox;
1908         uint32_t hc_copy;
1909         int  i;
1910         uint8_t hdrtype;
1911
1912         pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
1913         if (hdrtype != 0x80 ||
1914             (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
1915              FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
1916                 return;
1917
1918         /*
1919          * Tell the other part of the chip to suspend temporarily all
1920          * its DMA activity.
1921          */
1922         resp_buf = phba->MBslimaddr;
1923
1924         /* Disable the error attention */
1925         hc_copy = readl(phba->HCregaddr);
1926         writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
1927         readl(phba->HCregaddr); /* flush */
1928         phba->link_flag |= LS_IGNORE_ERATT;
1929
1930         if (readl(phba->HAregaddr) & HA_ERATT) {
1931                 /* Clear Chip error bit */
1932                 writel(HA_ERATT, phba->HAregaddr);
1933                 phba->pport->stopped = 1;
1934         }
1935
1936         mbox = 0;
1937         ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD;
1938         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP;
1939
1940         writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
1941         mbox_buf = phba->MBslimaddr;
1942         writel(mbox, mbox_buf);
1943
1944         for (i = 0;
1945              readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++)
1946                 mdelay(1);
1947
1948         if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) {
1949                 if (phba->sli.sli_flag & LPFC_SLI2_ACTIVE ||
1950                     phba->pport->stopped)
1951                         goto restore_hc;
1952                 else
1953                         goto clear_errat;
1954         }
1955
1956         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST;
1957         for (i = 0; readl(resp_buf) != mbox &&  i < 500; i++)
1958                 mdelay(1);
1959
1960 clear_errat:
1961
1962         while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500)
1963                 mdelay(1);
1964
1965         if (readl(phba->HAregaddr) & HA_ERATT) {
1966                 writel(HA_ERATT, phba->HAregaddr);
1967                 phba->pport->stopped = 1;
1968         }
1969
1970 restore_hc:
1971         phba->link_flag &= ~LS_IGNORE_ERATT;
1972         writel(hc_copy, phba->HCregaddr);
1973         readl(phba->HCregaddr); /* flush */
1974 }
1975
1976 int
1977 lpfc_sli_brdkill(struct lpfc_hba *phba)
1978 {
1979         struct lpfc_sli *psli;
1980         LPFC_MBOXQ_t *pmb;
1981         uint32_t status;
1982         uint32_t ha_copy;
1983         int retval;
1984         int i = 0;
1985
1986         psli = &phba->sli;
1987
1988         /* Kill HBA */
1989         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1990                         "0329 Kill HBA Data: x%x x%x\n",
1991                         phba->pport->port_state, psli->sli_flag);
1992
1993         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1994         if (!pmb)
1995                 return 1;
1996
1997         /* Disable the error attention */
1998         spin_lock_irq(&phba->hbalock);
1999         status = readl(phba->HCregaddr);
2000         status &= ~HC_ERINT_ENA;
2001         writel(status, phba->HCregaddr);
2002         readl(phba->HCregaddr); /* flush */
2003         phba->link_flag |= LS_IGNORE_ERATT;
2004         spin_unlock_irq(&phba->hbalock);
2005
2006         lpfc_kill_board(phba, pmb);
2007         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2008         retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
2009
2010         if (retval != MBX_SUCCESS) {
2011                 if (retval != MBX_BUSY)
2012                         mempool_free(pmb, phba->mbox_mem_pool);
2013                 spin_lock_irq(&phba->hbalock);
2014                 phba->link_flag &= ~LS_IGNORE_ERATT;
2015                 spin_unlock_irq(&phba->hbalock);
2016                 return 1;
2017         }
2018
2019         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
2020
2021         mempool_free(pmb, phba->mbox_mem_pool);
2022
2023         /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
2024          * attention every 100ms for 3 seconds. If we don't get ERATT after
2025          * 3 seconds we still set HBA_ERROR state because the status of the
2026          * board is now undefined.
2027          */
2028         ha_copy = readl(phba->HAregaddr);
2029
2030         while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
2031                 mdelay(100);
2032                 ha_copy = readl(phba->HAregaddr);
2033         }
2034
2035         del_timer_sync(&psli->mbox_tmo);
2036         if (ha_copy & HA_ERATT) {
2037                 writel(HA_ERATT, phba->HAregaddr);
2038                 phba->pport->stopped = 1;
2039         }
2040         spin_lock_irq(&phba->hbalock);
2041         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2042         phba->link_flag &= ~LS_IGNORE_ERATT;
2043         spin_unlock_irq(&phba->hbalock);
2044
2045         psli->mbox_active = NULL;
2046         lpfc_hba_down_post(phba);
2047         phba->link_state = LPFC_HBA_ERROR;
2048
2049         return ha_copy & HA_ERATT ? 0 : 1;
2050 }
2051
2052 int
2053 lpfc_sli_brdreset(struct lpfc_hba *phba)
2054 {
2055         struct lpfc_sli *psli;
2056         struct lpfc_sli_ring *pring;
2057         uint16_t cfg_value;
2058         int i;
2059
2060         psli = &phba->sli;
2061
2062         /* Reset HBA */
2063         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2064                         "0325 Reset HBA Data: x%x x%x\n",
2065                         phba->pport->port_state, psli->sli_flag);
2066
2067         /* perform board reset */
2068         phba->fc_eventTag = 0;
2069         phba->pport->fc_myDID = 0;
2070         phba->pport->fc_prevDID = 0;
2071
2072         /* Turn off parity checking and serr during the physical reset */
2073         pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
2074         pci_write_config_word(phba->pcidev, PCI_COMMAND,
2075                               (cfg_value &
2076                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
2077
2078         psli->sli_flag &= ~(LPFC_SLI2_ACTIVE | LPFC_PROCESS_LA);
2079         /* Now toggle INITFF bit in the Host Control Register */
2080         writel(HC_INITFF, phba->HCregaddr);
2081         mdelay(1);
2082         readl(phba->HCregaddr); /* flush */
2083         writel(0, phba->HCregaddr);
2084         readl(phba->HCregaddr); /* flush */
2085
2086         /* Restore PCI cmd register */
2087         pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
2088
2089         /* Initialize relevant SLI info */
2090         for (i = 0; i < psli->num_rings; i++) {
2091                 pring = &psli->ring[i];
2092                 pring->flag = 0;
2093                 pring->rspidx = 0;
2094                 pring->next_cmdidx  = 0;
2095                 pring->local_getidx = 0;
2096                 pring->cmdidx = 0;
2097                 pring->missbufcnt = 0;
2098         }
2099
2100         phba->link_state = LPFC_WARM_START;
2101         return 0;
2102 }
2103
2104 int
2105 lpfc_sli_brdrestart(struct lpfc_hba *phba)
2106 {
2107         MAILBOX_t *mb;
2108         struct lpfc_sli *psli;
2109         uint16_t skip_post;
2110         volatile uint32_t word0;
2111         void __iomem *to_slim;
2112
2113         spin_lock_irq(&phba->hbalock);
2114
2115         psli = &phba->sli;
2116
2117         /* Restart HBA */
2118         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2119                         "0337 Restart HBA Data: x%x x%x\n",
2120                         phba->pport->port_state, psli->sli_flag);
2121
2122         word0 = 0;
2123         mb = (MAILBOX_t *) &word0;
2124         mb->mbxCommand = MBX_RESTART;
2125         mb->mbxHc = 1;
2126
2127         lpfc_reset_barrier(phba);
2128
2129         to_slim = phba->MBslimaddr;
2130         writel(*(uint32_t *) mb, to_slim);
2131         readl(to_slim); /* flush */
2132
2133         /* Only skip post after fc_ffinit is completed */
2134         if (phba->pport->port_state) {
2135                 skip_post = 1;
2136                 word0 = 1;      /* This is really setting up word1 */
2137         } else {
2138                 skip_post = 0;
2139                 word0 = 0;      /* This is really setting up word1 */
2140         }
2141         to_slim = phba->MBslimaddr + sizeof (uint32_t);
2142         writel(*(uint32_t *) mb, to_slim);
2143         readl(to_slim); /* flush */
2144
2145         lpfc_sli_brdreset(phba);
2146         phba->pport->stopped = 0;
2147         phba->link_state = LPFC_INIT_START;
2148
2149         spin_unlock_irq(&phba->hbalock);
2150
2151         memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
2152         psli->stats_start = get_seconds();
2153
2154         if (skip_post)
2155                 mdelay(100);
2156         else
2157                 mdelay(2000);
2158
2159         lpfc_hba_down_post(phba);
2160
2161         return 0;
2162 }
2163
2164 static int
2165 lpfc_sli_chipset_init(struct lpfc_hba *phba)
2166 {
2167         uint32_t status, i = 0;
2168
2169         /* Read the HBA Host Status Register */
2170         status = readl(phba->HSregaddr);
2171
2172         /* Check status register to see what current state is */
2173         i = 0;
2174         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
2175
2176                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
2177                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
2178                  * 4.
2179                  */
2180                 if (i++ >= 20) {
2181                         /* Adapter failed to init, timeout, status reg
2182                            <status> */
2183                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2184                                         "0436 Adapter failed to init, "
2185                                         "timeout, status reg x%x\n", status);
2186                         phba->link_state = LPFC_HBA_ERROR;
2187                         return -ETIMEDOUT;
2188                 }
2189
2190                 /* Check to see if any errors occurred during init */
2191                 if (status & HS_FFERM) {
2192                         /* ERROR: During chipset initialization */
2193                         /* Adapter failed to init, chipset, status reg
2194                            <status> */
2195                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2196                                         "0437 Adapter failed to init, "
2197                                         "chipset, status reg x%x\n", status);
2198                         phba->link_state = LPFC_HBA_ERROR;
2199                         return -EIO;
2200                 }
2201
2202                 if (i <= 5) {
2203                         msleep(10);
2204                 } else if (i <= 10) {
2205                         msleep(500);
2206                 } else {
2207                         msleep(2500);
2208                 }
2209
2210                 if (i == 15) {
2211                                 /* Do post */
2212                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2213                         lpfc_sli_brdrestart(phba);
2214                 }
2215                 /* Read the HBA Host Status Register */
2216                 status = readl(phba->HSregaddr);
2217         }
2218
2219         /* Check to see if any errors occurred during init */
2220         if (status & HS_FFERM) {
2221                 /* ERROR: During chipset initialization */
2222                 /* Adapter failed to init, chipset, status reg <status> */
2223                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2224                                 "0438 Adapter failed to init, chipset, "
2225                                 "status reg x%x\n", status);
2226                 phba->link_state = LPFC_HBA_ERROR;
2227                 return -EIO;
2228         }
2229
2230         /* Clear all interrupt enable conditions */
2231         writel(0, phba->HCregaddr);
2232         readl(phba->HCregaddr); /* flush */
2233
2234         /* setup host attn register */
2235         writel(0xffffffff, phba->HAregaddr);
2236         readl(phba->HAregaddr); /* flush */
2237         return 0;
2238 }
2239
2240 int
2241 lpfc_sli_hbq_count(void)
2242 {
2243         return ARRAY_SIZE(lpfc_hbq_defs);
2244 }
2245
2246 static int
2247 lpfc_sli_hbq_entry_count(void)
2248 {
2249         int  hbq_count = lpfc_sli_hbq_count();
2250         int  count = 0;
2251         int  i;
2252
2253         for (i = 0; i < hbq_count; ++i)
2254                 count += lpfc_hbq_defs[i]->entry_count;
2255         return count;
2256 }
2257
2258 int
2259 lpfc_sli_hbq_size(void)
2260 {
2261         return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry);
2262 }
2263
2264 static int
2265 lpfc_sli_hbq_setup(struct lpfc_hba *phba)
2266 {
2267         int  hbq_count = lpfc_sli_hbq_count();
2268         LPFC_MBOXQ_t *pmb;
2269         MAILBOX_t *pmbox;
2270         uint32_t hbqno;
2271         uint32_t hbq_entry_index;
2272
2273                                 /* Get a Mailbox buffer to setup mailbox
2274                                  * commands for HBA initialization
2275                                  */
2276         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2277
2278         if (!pmb)
2279                 return -ENOMEM;
2280
2281         pmbox = &pmb->mb;
2282
2283         /* Initialize the struct lpfc_sli_hbq structure for each hbq */
2284         phba->link_state = LPFC_INIT_MBX_CMDS;
2285
2286         hbq_entry_index = 0;
2287         for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
2288                 phba->hbqs[hbqno].next_hbqPutIdx = 0;
2289                 phba->hbqs[hbqno].hbqPutIdx      = 0;
2290                 phba->hbqs[hbqno].local_hbqGetIdx   = 0;
2291                 phba->hbqs[hbqno].entry_count =
2292                         lpfc_hbq_defs[hbqno]->entry_count;
2293                 lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno],
2294                         hbq_entry_index, pmb);
2295                 hbq_entry_index += phba->hbqs[hbqno].entry_count;
2296
2297                 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
2298                         /* Adapter failed to init, mbxCmd <cmd> CFG_RING,
2299                            mbxStatus <status>, ring <num> */
2300
2301                         lpfc_printf_log(phba, KERN_ERR,
2302                                         LOG_SLI | LOG_VPORT,
2303                                         "1805 Adapter failed to init. "
2304                                         "Data: x%x x%x x%x\n",
2305                                         pmbox->mbxCommand,
2306                                         pmbox->mbxStatus, hbqno);
2307
2308                         phba->link_state = LPFC_HBA_ERROR;
2309                         mempool_free(pmb, phba->mbox_mem_pool);
2310                         return ENXIO;
2311                 }
2312         }
2313         phba->hbq_count = hbq_count;
2314
2315         mempool_free(pmb, phba->mbox_mem_pool);
2316
2317         /* Initially populate or replenish the HBQs */
2318         for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
2319                 if (lpfc_sli_hbqbuf_init_hbqs(phba, hbqno))
2320                         return -ENOMEM;
2321         }
2322         return 0;
2323 }
2324
2325 static int
2326 lpfc_do_config_port(struct lpfc_hba *phba, int sli_mode)
2327 {
2328         LPFC_MBOXQ_t *pmb;
2329         uint32_t resetcount = 0, rc = 0, done = 0;
2330
2331         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2332         if (!pmb) {
2333                 phba->link_state = LPFC_HBA_ERROR;
2334                 return -ENOMEM;
2335         }
2336
2337         phba->sli_rev = sli_mode;
2338         while (resetcount < 2 && !done) {
2339                 spin_lock_irq(&phba->hbalock);
2340                 phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2341                 spin_unlock_irq(&phba->hbalock);
2342                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2343                 lpfc_sli_brdrestart(phba);
2344                 msleep(2500);
2345                 rc = lpfc_sli_chipset_init(phba);
2346                 if (rc)
2347                         break;
2348
2349                 spin_lock_irq(&phba->hbalock);
2350                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2351                 spin_unlock_irq(&phba->hbalock);
2352                 resetcount++;
2353
2354                 /* Call pre CONFIG_PORT mailbox command initialization.  A
2355                  * value of 0 means the call was successful.  Any other
2356                  * nonzero value is a failure, but if ERESTART is returned,
2357                  * the driver may reset the HBA and try again.
2358                  */
2359                 rc = lpfc_config_port_prep(phba);
2360                 if (rc == -ERESTART) {
2361                         phba->link_state = LPFC_LINK_UNKNOWN;
2362                         continue;
2363                 } else if (rc) {
2364                         break;
2365                 }
2366
2367                 phba->link_state = LPFC_INIT_MBX_CMDS;
2368                 lpfc_config_port(phba, pmb);
2369                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
2370                 if (rc != MBX_SUCCESS) {
2371                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2372                                 "0442 Adapter failed to init, mbxCmd x%x "
2373                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
2374                                 pmb->mb.mbxCommand, pmb->mb.mbxStatus, 0);
2375                         spin_lock_irq(&phba->hbalock);
2376                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
2377                         spin_unlock_irq(&phba->hbalock);
2378                         rc = -ENXIO;
2379                 } else {
2380                         done = 1;
2381                         phba->max_vpi = (phba->max_vpi &&
2382                                          pmb->mb.un.varCfgPort.gmv) != 0
2383                                 ? pmb->mb.un.varCfgPort.max_vpi
2384                                 : 0;
2385                 }
2386         }
2387
2388         if (!done) {
2389                 rc = -EINVAL;
2390                 goto do_prep_failed;
2391         }
2392
2393         if ((pmb->mb.un.varCfgPort.sli_mode == 3) &&
2394                 (!pmb->mb.un.varCfgPort.cMA)) {
2395                 rc = -ENXIO;
2396                 goto do_prep_failed;
2397         }
2398         return rc;
2399
2400 do_prep_failed:
2401         mempool_free(pmb, phba->mbox_mem_pool);
2402         return rc;
2403 }
2404
2405 int
2406 lpfc_sli_hba_setup(struct lpfc_hba *phba)
2407 {
2408         uint32_t rc;
2409         int  mode = 3;
2410
2411         switch (lpfc_sli_mode) {
2412         case 2:
2413                 if (phba->cfg_enable_npiv) {
2414                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2415                                 "1824 NPIV enabled: Override lpfc_sli_mode "
2416                                 "parameter (%d) to auto (0).\n",
2417                                 lpfc_sli_mode);
2418                         break;
2419                 }
2420                 mode = 2;
2421                 break;
2422         case 0:
2423         case 3:
2424                 break;
2425         default:
2426                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2427                                 "1819 Unrecognized lpfc_sli_mode "
2428                                 "parameter: %d.\n", lpfc_sli_mode);
2429
2430                 break;
2431         }
2432
2433         rc = lpfc_do_config_port(phba, mode);
2434         if (rc && lpfc_sli_mode == 3)
2435                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2436                                 "1820 Unable to select SLI-3.  "
2437                                 "Not supported by adapter.\n");
2438         if (rc && mode != 2)
2439                 rc = lpfc_do_config_port(phba, 2);
2440         if (rc)
2441                 goto lpfc_sli_hba_setup_error;
2442
2443         if (phba->sli_rev == 3) {
2444                 phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE;
2445                 phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE;
2446                 phba->sli3_options |= LPFC_SLI3_ENABLED;
2447                 phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
2448
2449         } else {
2450                 phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE;
2451                 phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE;
2452                 phba->sli3_options = 0;
2453         }
2454
2455         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2456                         "0444 Firmware in SLI %x mode. Max_vpi %d\n",
2457                         phba->sli_rev, phba->max_vpi);
2458         rc = lpfc_sli_ring_map(phba);
2459
2460         if (rc)
2461                 goto lpfc_sli_hba_setup_error;
2462
2463                                 /* Init HBQs */
2464
2465         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
2466                 rc = lpfc_sli_hbq_setup(phba);
2467                 if (rc)
2468                         goto lpfc_sli_hba_setup_error;
2469         }
2470
2471         phba->sli.sli_flag |= LPFC_PROCESS_LA;
2472
2473         rc = lpfc_config_port_post(phba);
2474         if (rc)
2475                 goto lpfc_sli_hba_setup_error;
2476
2477         return rc;
2478
2479 lpfc_sli_hba_setup_error:
2480         phba->link_state = LPFC_HBA_ERROR;
2481         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2482                         "0445 Firmware initialization failed\n");
2483         return rc;
2484 }
2485
2486 /*! lpfc_mbox_timeout
2487  *
2488  * \pre
2489  * \post
2490  * \param hba Pointer to per struct lpfc_hba structure
2491  * \param l1  Pointer to the driver's mailbox queue.
2492  * \return
2493  *   void
2494  *
2495  * \b Description:
2496  *
2497  * This routine handles mailbox timeout events at timer interrupt context.
2498  */
2499 void
2500 lpfc_mbox_timeout(unsigned long ptr)
2501 {
2502         struct lpfc_hba  *phba = (struct lpfc_hba *) ptr;
2503         unsigned long iflag;
2504         uint32_t tmo_posted;
2505
2506         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
2507         tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO;
2508         if (!tmo_posted)
2509                 phba->pport->work_port_events |= WORKER_MBOX_TMO;
2510         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
2511
2512         if (!tmo_posted) {
2513                 spin_lock_irqsave(&phba->hbalock, iflag);
2514                 if (phba->work_wait)
2515                         lpfc_worker_wake_up(phba);
2516                 spin_unlock_irqrestore(&phba->hbalock, iflag);
2517         }
2518 }
2519
2520 void
2521 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
2522 {
2523         LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
2524         MAILBOX_t *mb = &pmbox->mb;
2525         struct lpfc_sli *psli = &phba->sli;
2526         struct lpfc_sli_ring *pring;
2527
2528         if (!(phba->pport->work_port_events & WORKER_MBOX_TMO)) {
2529                 return;
2530         }
2531
2532         /* Mbox cmd <mbxCommand> timeout */
2533         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2534                         "0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
2535                         mb->mbxCommand,
2536                         phba->pport->port_state,
2537                         phba->sli.sli_flag,
2538                         phba->sli.mbox_active);
2539
2540         /* Setting state unknown so lpfc_sli_abort_iocb_ring
2541          * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing
2542          * it to fail all oustanding SCSI IO.
2543          */
2544         spin_lock_irq(&phba->pport->work_port_lock);
2545         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
2546         spin_unlock_irq(&phba->pport->work_port_lock);
2547         spin_lock_irq(&phba->hbalock);
2548         phba->link_state = LPFC_LINK_UNKNOWN;
2549         phba->pport->fc_flag |= FC_ESTABLISH_LINK;
2550         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
2551         spin_unlock_irq(&phba->hbalock);
2552
2553         pring = &psli->ring[psli->fcp_ring];
2554         lpfc_sli_abort_iocb_ring(phba, pring);
2555
2556         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2557                         "0345 Resetting board due to mailbox timeout\n");
2558         /*
2559          * lpfc_offline calls lpfc_sli_hba_down which will clean up
2560          * on oustanding mailbox commands.
2561          */
2562         /* If resets are disabled then set error state and return. */
2563         if (!phba->cfg_enable_hba_reset) {
2564                 phba->link_state = LPFC_HBA_ERROR;
2565                 return;
2566         }
2567         lpfc_offline_prep(phba);
2568         lpfc_offline(phba);
2569         lpfc_sli_brdrestart(phba);
2570         if (lpfc_online(phba) == 0)             /* Initialize the HBA */
2571                 mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
2572         lpfc_unblock_mgmt_io(phba);
2573         return;
2574 }
2575
2576 int
2577 lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
2578 {
2579         MAILBOX_t *mb;
2580         struct lpfc_sli *psli = &phba->sli;
2581         uint32_t status, evtctr;
2582         uint32_t ha_copy;
2583         int i;
2584         unsigned long drvr_flag = 0;
2585         volatile uint32_t word0, ldata;
2586         void __iomem *to_slim;
2587
2588         if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
2589                 pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
2590                 if(!pmbox->vport) {
2591                         lpfc_printf_log(phba, KERN_ERR,
2592                                         LOG_MBOX | LOG_VPORT,
2593                                         "1806 Mbox x%x failed. No vport\n",
2594                                         pmbox->mb.mbxCommand);
2595                         dump_stack();
2596                         return MBXERR_ERROR;
2597                 }
2598         }
2599
2600
2601         /* If the PCI channel is in offline state, do not post mbox. */
2602         if (unlikely(pci_channel_offline(phba->pcidev)))
2603                 return MBX_NOT_FINISHED;
2604
2605         spin_lock_irqsave(&phba->hbalock, drvr_flag);
2606         psli = &phba->sli;
2607
2608
2609         mb = &pmbox->mb;
2610         status = MBX_SUCCESS;
2611
2612         if (phba->link_state == LPFC_HBA_ERROR) {
2613                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2614
2615                 /* Mbox command <mbxCommand> cannot issue */
2616                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag)
2617                 return MBX_NOT_FINISHED;
2618         }
2619
2620         if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
2621             !(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
2622                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2623                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag)
2624                 return MBX_NOT_FINISHED;
2625         }
2626
2627         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
2628                 /* Polling for a mbox command when another one is already active
2629                  * is not allowed in SLI. Also, the driver must have established
2630                  * SLI2 mode to queue and process multiple mbox commands.
2631                  */
2632
2633                 if (flag & MBX_POLL) {
2634                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2635
2636                         /* Mbox command <mbxCommand> cannot issue */
2637                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2638                         return MBX_NOT_FINISHED;
2639                 }
2640
2641                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
2642                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2643                         /* Mbox command <mbxCommand> cannot issue */
2644                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2645                         return MBX_NOT_FINISHED;
2646                 }
2647
2648                 /* Another mailbox command is still being processed, queue this
2649                  * command to be processed later.
2650                  */
2651                 lpfc_mbox_put(phba, pmbox);
2652
2653                 /* Mbox cmd issue - BUSY */
2654                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
2655                                 "(%d):0308 Mbox cmd issue - BUSY Data: "
2656                                 "x%x x%x x%x x%x\n",
2657                                 pmbox->vport ? pmbox->vport->vpi : 0xffffff,
2658                                 mb->mbxCommand, phba->pport->port_state,
2659                                 psli->sli_flag, flag);
2660
2661                 psli->slistat.mbox_busy++;
2662                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2663
2664                 if (pmbox->vport) {
2665                         lpfc_debugfs_disc_trc(pmbox->vport,
2666                                 LPFC_DISC_TRC_MBOX_VPORT,
2667                                 "MBOX Bsy vport:  cmd:x%x mb:x%x x%x",
2668                                 (uint32_t)mb->mbxCommand,
2669                                 mb->un.varWords[0], mb->un.varWords[1]);
2670                 }
2671                 else {
2672                         lpfc_debugfs_disc_trc(phba->pport,
2673                                 LPFC_DISC_TRC_MBOX,
2674                                 "MBOX Bsy:        cmd:x%x mb:x%x x%x",
2675                                 (uint32_t)mb->mbxCommand,
2676                                 mb->un.varWords[0], mb->un.varWords[1]);
2677                 }
2678
2679                 return MBX_BUSY;
2680         }
2681
2682         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2683
2684         /* If we are not polling, we MUST be in SLI2 mode */
2685         if (flag != MBX_POLL) {
2686                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE) &&
2687                     (mb->mbxCommand != MBX_KILL_BOARD)) {
2688                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2689                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2690                         /* Mbox command <mbxCommand> cannot issue */
2691                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2692                         return MBX_NOT_FINISHED;
2693                 }
2694                 /* timeout active mbox command */
2695                 mod_timer(&psli->mbox_tmo, (jiffies +
2696                                (HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand))));
2697         }
2698
2699         /* Mailbox cmd <cmd> issue */
2700         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
2701                         "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x "
2702                         "x%x\n",
2703                         pmbox->vport ? pmbox->vport->vpi : 0,
2704                         mb->mbxCommand, phba->pport->port_state,
2705                         psli->sli_flag, flag);
2706
2707         if (mb->mbxCommand != MBX_HEARTBEAT) {
2708                 if (pmbox->vport) {
2709                         lpfc_debugfs_disc_trc(pmbox->vport,
2710                                 LPFC_DISC_TRC_MBOX_VPORT,
2711                                 "MBOX Send vport: cmd:x%x mb:x%x x%x",
2712                                 (uint32_t)mb->mbxCommand,
2713                                 mb->un.varWords[0], mb->un.varWords[1]);
2714                 }
2715                 else {
2716                         lpfc_debugfs_disc_trc(phba->pport,
2717                                 LPFC_DISC_TRC_MBOX,
2718                                 "MBOX Send:       cmd:x%x mb:x%x x%x",
2719                                 (uint32_t)mb->mbxCommand,
2720                                 mb->un.varWords[0], mb->un.varWords[1]);
2721                 }
2722         }
2723
2724         psli->slistat.mbox_cmd++;
2725         evtctr = psli->slistat.mbox_event;
2726
2727         /* next set own bit for the adapter and copy over command word */
2728         mb->mbxOwner = OWN_CHIP;
2729
2730         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2731                 /* First copy command data to host SLIM area */
2732                 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
2733         } else {
2734                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2735                         /* copy command data into host mbox for cmpl */
2736                         lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
2737                                               MAILBOX_CMD_SIZE);
2738                 }
2739
2740                 /* First copy mbox command data to HBA SLIM, skip past first
2741                    word */
2742                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
2743                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
2744                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
2745
2746                 /* Next copy over first word, with mbxOwner set */
2747                 ldata = *((volatile uint32_t *)mb);
2748                 to_slim = phba->MBslimaddr;
2749                 writel(ldata, to_slim);
2750                 readl(to_slim); /* flush */
2751
2752                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2753                         /* switch over to host mailbox */
2754                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
2755                 }
2756         }
2757
2758         wmb();
2759         /* interrupt board to doit right away */
2760         writel(CA_MBATT, phba->CAregaddr);
2761         readl(phba->CAregaddr); /* flush */
2762
2763         switch (flag) {
2764         case MBX_NOWAIT:
2765                 /* Don't wait for it to finish, just return */
2766                 psli->mbox_active = pmbox;
2767                 break;
2768
2769         case MBX_POLL:
2770                 psli->mbox_active = NULL;
2771                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2772                         /* First read mbox status word */
2773                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
2774                         word0 = le32_to_cpu(word0);
2775                 } else {
2776                         /* First read mbox status word */
2777                         word0 = readl(phba->MBslimaddr);
2778                 }
2779
2780                 /* Read the HBA Host Attention Register */
2781                 ha_copy = readl(phba->HAregaddr);
2782
2783                 i = lpfc_mbox_tmo_val(phba, mb->mbxCommand);
2784                 i *= 1000; /* Convert to ms */
2785
2786                 /* Wait for command to complete */
2787                 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
2788                        (!(ha_copy & HA_MBATT) &&
2789                         (phba->link_state > LPFC_WARM_START))) {
2790                         if (i-- <= 0) {
2791                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2792                                 spin_unlock_irqrestore(&phba->hbalock,
2793                                                        drvr_flag);
2794                                 return MBX_NOT_FINISHED;
2795                         }
2796
2797                         /* Check if we took a mbox interrupt while we were
2798                            polling */
2799                         if (((word0 & OWN_CHIP) != OWN_CHIP)
2800                             && (evtctr != psli->slistat.mbox_event))
2801                                 break;
2802
2803                         spin_unlock_irqrestore(&phba->hbalock,
2804                                                drvr_flag);
2805
2806                         msleep(1);
2807
2808                         spin_lock_irqsave(&phba->hbalock, drvr_flag);
2809
2810                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2811                                 /* First copy command data */
2812                                 word0 = *((volatile uint32_t *)
2813                                                 &phba->slim2p->mbx);
2814                                 word0 = le32_to_cpu(word0);
2815                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2816                                         MAILBOX_t *slimmb;
2817                                         volatile uint32_t slimword0;
2818                                         /* Check real SLIM for any errors */
2819                                         slimword0 = readl(phba->MBslimaddr);
2820                                         slimmb = (MAILBOX_t *) & slimword0;
2821                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
2822                                             && slimmb->mbxStatus) {
2823                                                 psli->sli_flag &=
2824                                                     ~LPFC_SLI2_ACTIVE;
2825                                                 word0 = slimword0;
2826                                         }
2827                                 }
2828                         } else {
2829                                 /* First copy command data */
2830                                 word0 = readl(phba->MBslimaddr);
2831                         }
2832                         /* Read the HBA Host Attention Register */
2833                         ha_copy = readl(phba->HAregaddr);
2834                 }
2835
2836                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2837                         /* copy results back to user */
2838                         lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
2839                                               MAILBOX_CMD_SIZE);
2840                 } else {
2841                         /* First copy command data */
2842                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2843                                                         MAILBOX_CMD_SIZE);
2844                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2845                                 pmbox->context2) {
2846                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
2847                                       phba->MBslimaddr + DMP_RSP_OFFSET,
2848                                                       mb->un.varDmp.word_cnt);
2849                         }
2850                 }
2851
2852                 writel(HA_MBATT, phba->HAregaddr);
2853                 readl(phba->HAregaddr); /* flush */
2854
2855                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2856                 status = mb->mbxStatus;
2857         }
2858
2859         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2860         return status;
2861 }
2862
2863 /*
2864  * Caller needs to hold lock.
2865  */
2866 static void
2867 __lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2868                     struct lpfc_iocbq *piocb)
2869 {
2870         /* Insert the caller's iocb in the txq tail for later processing. */
2871         list_add_tail(&piocb->list, &pring->txq);
2872         pring->txq_cnt++;
2873 }
2874
2875 static struct lpfc_iocbq *
2876 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2877                    struct lpfc_iocbq **piocb)
2878 {
2879         struct lpfc_iocbq * nextiocb;
2880
2881         nextiocb = lpfc_sli_ringtx_get(phba, pring);
2882         if (!nextiocb) {
2883                 nextiocb = *piocb;
2884                 *piocb = NULL;
2885         }
2886
2887         return nextiocb;
2888 }
2889
2890 /*
2891  * Lockless version of lpfc_sli_issue_iocb.
2892  */
2893 static int
2894 __lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2895                     struct lpfc_iocbq *piocb, uint32_t flag)
2896 {
2897         struct lpfc_iocbq *nextiocb;
2898         IOCB_t *iocb;
2899
2900         if (piocb->iocb_cmpl && (!piocb->vport) &&
2901            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
2902            (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
2903                 lpfc_printf_log(phba, KERN_ERR,
2904                                 LOG_SLI | LOG_VPORT,
2905                                 "1807 IOCB x%x failed. No vport\n",
2906                                 piocb->iocb.ulpCommand);
2907                 dump_stack();
2908                 return IOCB_ERROR;
2909         }
2910
2911
2912         /* If the PCI channel is in offline state, do not post iocbs. */
2913         if (unlikely(pci_channel_offline(phba->pcidev)))
2914                 return IOCB_ERROR;
2915
2916         /*
2917          * We should never get an IOCB if we are in a < LINK_DOWN state
2918          */
2919         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
2920                 return IOCB_ERROR;
2921
2922         /*
2923          * Check to see if we are blocking IOCB processing because of a
2924          * outstanding event.
2925          */
2926         if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
2927                 goto iocb_busy;
2928
2929         if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
2930                 /*
2931                  * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF
2932                  * can be issued if the link is not up.
2933                  */
2934                 switch (piocb->iocb.ulpCommand) {
2935                 case CMD_QUE_RING_BUF_CN:
2936                 case CMD_QUE_RING_BUF64_CN:
2937                         /*
2938                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2939                          * completion, iocb_cmpl MUST be 0.
2940                          */
2941                         if (piocb->iocb_cmpl)
2942                                 piocb->iocb_cmpl = NULL;
2943                         /*FALLTHROUGH*/
2944                 case CMD_CREATE_XRI_CR:
2945                 case CMD_CLOSE_XRI_CN:
2946                 case CMD_CLOSE_XRI_CX:
2947                         break;
2948                 default:
2949                         goto iocb_busy;
2950                 }
2951
2952         /*
2953          * For FCP commands, we must be in a state where we can process link
2954          * attention events.
2955          */
2956         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2957                             !(phba->sli.sli_flag & LPFC_PROCESS_LA))) {
2958                 goto iocb_busy;
2959         }
2960
2961         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2962                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2963                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2964
2965         if (iocb)
2966                 lpfc_sli_update_ring(phba, pring);
2967         else
2968                 lpfc_sli_update_full_ring(phba, pring);
2969
2970         if (!piocb)
2971                 return IOCB_SUCCESS;
2972
2973         goto out_busy;
2974
2975  iocb_busy:
2976         pring->stats.iocb_cmd_delay++;
2977
2978  out_busy:
2979
2980         if (!(flag & SLI_IOCB_RET_IOCB)) {
2981                 __lpfc_sli_ringtx_put(phba, pring, piocb);
2982                 return IOCB_SUCCESS;
2983         }
2984
2985         return IOCB_BUSY;
2986 }
2987
2988
2989 int
2990 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2991                     struct lpfc_iocbq *piocb, uint32_t flag)
2992 {
2993         unsigned long iflags;
2994         int rc;
2995
2996         spin_lock_irqsave(&phba->hbalock, iflags);
2997         rc = __lpfc_sli_issue_iocb(phba, pring, piocb, flag);
2998         spin_unlock_irqrestore(&phba->hbalock, iflags);
2999
3000         return rc;
3001 }
3002
3003 static int
3004 lpfc_extra_ring_setup( struct lpfc_hba *phba)
3005 {
3006         struct lpfc_sli *psli;
3007         struct lpfc_sli_ring *pring;
3008
3009         psli = &phba->sli;
3010
3011         /* Adjust cmd/rsp ring iocb entries more evenly */
3012
3013         /* Take some away from the FCP ring */
3014         pring = &psli->ring[psli->fcp_ring];
3015         pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3016         pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3017         pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3018         pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3019
3020         /* and give them to the extra ring */
3021         pring = &psli->ring[psli->extra_ring];
3022
3023         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3024         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3025         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3026         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3027
3028         /* Setup default profile for this ring */
3029         pring->iotag_max = 4096;
3030         pring->num_mask = 1;
3031         pring->prt[0].profile = 0;      /* Mask 0 */
3032         pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
3033         pring->prt[0].type = phba->cfg_multi_ring_type;
3034         pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
3035         return 0;
3036 }
3037
3038 static void
3039 lpfc_sli_async_event_handler(struct lpfc_hba * phba,
3040         struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
3041 {
3042         IOCB_t *icmd;
3043         uint16_t evt_code;
3044         uint16_t temp;
3045         struct temp_event temp_event_data;
3046         struct Scsi_Host *shost;
3047
3048         icmd = &iocbq->iocb;
3049         evt_code = icmd->un.asyncstat.evt_code;
3050         temp = icmd->ulpContext;
3051
3052         if ((evt_code != ASYNC_TEMP_WARN) &&
3053                 (evt_code != ASYNC_TEMP_SAFE)) {
3054                 lpfc_printf_log(phba,
3055                         KERN_ERR,
3056                         LOG_SLI,
3057                         "0346 Ring %d handler: unexpected ASYNC_STATUS"
3058                         " evt_code 0x%x\n",
3059                         pring->ringno,
3060                         icmd->un.asyncstat.evt_code);
3061                 return;
3062         }
3063         temp_event_data.data = (uint32_t)temp;
3064         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
3065         if (evt_code == ASYNC_TEMP_WARN) {
3066                 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
3067                 lpfc_printf_log(phba,
3068                                 KERN_WARNING,
3069                                 LOG_TEMP,
3070                                 "0347 Adapter is very hot, please take "
3071                                 "corrective action. temperature : %d Celsius\n",
3072                                 temp);
3073         }
3074         if (evt_code == ASYNC_TEMP_SAFE) {
3075                 temp_event_data.event_code = LPFC_NORMAL_TEMP;
3076                 lpfc_printf_log(phba,
3077                                 KERN_INFO,
3078                                 LOG_TEMP,
3079                                 "0340 Adapter temperature is OK now. "
3080                                 "temperature : %d Celsius\n",
3081                                 temp);
3082         }
3083
3084         /* Send temperature change event to applications */
3085         shost = lpfc_shost_from_vport(phba->pport);
3086         fc_host_post_vendor_event(shost, fc_get_event_number(),
3087                 sizeof(temp_event_data), (char *) &temp_event_data,
3088                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
3089
3090 }
3091
3092
3093 int
3094 lpfc_sli_setup(struct lpfc_hba *phba)
3095 {
3096         int i, totiocbsize = 0;
3097         struct lpfc_sli *psli = &phba->sli;
3098         struct lpfc_sli_ring *pring;
3099
3100         psli->num_rings = MAX_CONFIGURED_RINGS;
3101         psli->sli_flag = 0;
3102         psli->fcp_ring = LPFC_FCP_RING;
3103         psli->next_ring = LPFC_FCP_NEXT_RING;
3104         psli->extra_ring = LPFC_EXTRA_RING;
3105
3106         psli->iocbq_lookup = NULL;
3107         psli->iocbq_lookup_len = 0;
3108         psli->last_iotag = 0;
3109
3110         for (i = 0; i < psli->num_rings; i++) {
3111                 pring = &psli->ring[i];
3112                 switch (i) {
3113                 case LPFC_FCP_RING:     /* ring 0 - FCP */
3114                         /* numCiocb and numRiocb are used in config_port */
3115                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
3116                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
3117                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3118                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3119                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3120                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3121                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3122                                                         SLI3_IOCB_CMD_SIZE :
3123                                                         SLI2_IOCB_CMD_SIZE;
3124                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3125                                                         SLI3_IOCB_RSP_SIZE :
3126                                                         SLI2_IOCB_RSP_SIZE;
3127                         pring->iotag_ctr = 0;
3128                         pring->iotag_max =
3129                             (phba->cfg_hba_queue_depth * 2);
3130                         pring->fast_iotag = pring->iotag_max;
3131                         pring->num_mask = 0;
3132                         break;
3133                 case LPFC_EXTRA_RING:   /* ring 1 - EXTRA */
3134                         /* numCiocb and numRiocb are used in config_port */
3135                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
3136                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
3137                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3138                                                         SLI3_IOCB_CMD_SIZE :
3139                                                         SLI2_IOCB_CMD_SIZE;
3140                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3141                                                         SLI3_IOCB_RSP_SIZE :
3142                                                         SLI2_IOCB_RSP_SIZE;
3143                         pring->iotag_max = phba->cfg_hba_queue_depth;
3144                         pring->num_mask = 0;
3145                         break;
3146                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
3147                         /* numCiocb and numRiocb are used in config_port */
3148                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
3149                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
3150                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3151                                                         SLI3_IOCB_CMD_SIZE :
3152                                                         SLI2_IOCB_CMD_SIZE;
3153                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3154                                                         SLI3_IOCB_RSP_SIZE :
3155                                                         SLI2_IOCB_RSP_SIZE;
3156                         pring->fast_iotag = 0;
3157                         pring->iotag_ctr = 0;
3158                         pring->iotag_max = 4096;
3159                         pring->lpfc_sli_rcv_async_status =
3160                                 lpfc_sli_async_event_handler;
3161                         pring->num_mask = 4;
3162                         pring->prt[0].profile = 0;      /* Mask 0 */
3163                         pring->prt[0].rctl = FC_ELS_REQ;
3164                         pring->prt[0].type = FC_ELS_DATA;
3165                         pring->prt[0].lpfc_sli_rcv_unsol_event =
3166                             lpfc_els_unsol_event;
3167                         pring->prt[1].profile = 0;      /* Mask 1 */
3168                         pring->prt[1].rctl = FC_ELS_RSP;
3169                         pring->prt[1].type = FC_ELS_DATA;
3170                         pring->prt[1].lpfc_sli_rcv_unsol_event =
3171                             lpfc_els_unsol_event;
3172                         pring->prt[2].profile = 0;      /* Mask 2 */
3173                         /* NameServer Inquiry */
3174                         pring->prt[2].rctl = FC_UNSOL_CTL;
3175                         /* NameServer */
3176                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
3177                         pring->prt[2].lpfc_sli_rcv_unsol_event =
3178                             lpfc_ct_unsol_event;
3179                         pring->prt[3].profile = 0;      /* Mask 3 */
3180                         /* NameServer response */
3181                         pring->prt[3].rctl = FC_SOL_CTL;
3182                         /* NameServer */
3183                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
3184                         pring->prt[3].lpfc_sli_rcv_unsol_event =
3185                             lpfc_ct_unsol_event;
3186                         break;
3187                 }
3188                 totiocbsize += (pring->numCiocb * pring->sizeCiocb) +
3189                                 (pring->numRiocb * pring->sizeRiocb);
3190         }
3191         if (totiocbsize > MAX_SLIM_IOCB_SIZE) {
3192                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
3193                 printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in "
3194                        "SLI2 SLIM Data: x%x x%lx\n",
3195                        phba->brd_no, totiocbsize,
3196                        (unsigned long) MAX_SLIM_IOCB_SIZE);
3197         }
3198         if (phba->cfg_multi_ring_support == 2)
3199                 lpfc_extra_ring_setup(phba);
3200
3201         return 0;
3202 }
3203
3204 int
3205 lpfc_sli_queue_setup(struct lpfc_hba *phba)
3206 {
3207         struct lpfc_sli *psli;
3208         struct lpfc_sli_ring *pring;
3209         int i;
3210
3211         psli = &phba->sli;
3212         spin_lock_irq(&phba->hbalock);
3213         INIT_LIST_HEAD(&psli->mboxq);
3214         INIT_LIST_HEAD(&psli->mboxq_cmpl);
3215         /* Initialize list headers for txq and txcmplq as double linked lists */
3216         for (i = 0; i < psli->num_rings; i++) {
3217                 pring = &psli->ring[i];
3218                 pring->ringno = i;
3219                 pring->next_cmdidx  = 0;
3220                 pring->local_getidx = 0;
3221                 pring->cmdidx = 0;
3222                 INIT_LIST_HEAD(&pring->txq);
3223                 INIT_LIST_HEAD(&pring->txcmplq);
3224                 INIT_LIST_HEAD(&pring->iocb_continueq);
3225                 INIT_LIST_HEAD(&pring->postbufq);
3226         }
3227         spin_unlock_irq(&phba->hbalock);
3228         return 1;
3229 }
3230
3231 int
3232 lpfc_sli_host_down(struct lpfc_vport *vport)
3233 {
3234         LIST_HEAD(completions);
3235         struct lpfc_hba *phba = vport->phba;
3236         struct lpfc_sli *psli = &phba->sli;
3237         struct lpfc_sli_ring *pring;
3238         struct lpfc_iocbq *iocb, *next_iocb;
3239         int i;
3240         unsigned long flags = 0;
3241         uint16_t prev_pring_flag;
3242
3243         lpfc_cleanup_discovery_resources(vport);
3244
3245         spin_lock_irqsave(&phba->hbalock, flags);
3246         for (i = 0; i < psli->num_rings; i++) {
3247                 pring = &psli->ring[i];
3248                 prev_pring_flag = pring->flag;
3249                 if (pring->ringno == LPFC_ELS_RING) /* Only slow rings */
3250                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
3251                 /*
3252                  * Error everything on the txq since these iocbs have not been
3253                  * given to the FW yet.
3254                  */
3255                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3256                         if (iocb->vport != vport)
3257                                 continue;
3258                         list_move_tail(&iocb->list, &completions);
3259                         pring->txq_cnt--;
3260                 }
3261
3262                 /* Next issue ABTS for everything on the txcmplq */
3263                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
3264                                                                         list) {
3265                         if (iocb->vport != vport)
3266                                 continue;
3267                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3268                 }
3269
3270                 pring->flag = prev_pring_flag;
3271         }
3272
3273         spin_unlock_irqrestore(&phba->hbalock, flags);
3274
3275         while (!list_empty(&completions)) {
3276                 list_remove_head(&completions, iocb, struct lpfc_iocbq, list);
3277
3278                 if (!iocb->iocb_cmpl)
3279                         lpfc_sli_release_iocbq(phba, iocb);
3280                 else {
3281                         iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
3282                         iocb->iocb.un.ulpWord[4] = IOERR_SLI_DOWN;
3283                         (iocb->iocb_cmpl) (phba, iocb, iocb);
3284                 }
3285         }
3286         return 1;
3287 }
3288
3289 int
3290 lpfc_sli_hba_down(struct lpfc_hba *phba)
3291 {
3292         LIST_HEAD(completions);
3293         struct lpfc_sli *psli = &phba->sli;
3294         struct lpfc_sli_ring *pring;
3295         struct lpfc_dmabuf *buf_ptr;
3296         LPFC_MBOXQ_t *pmb;
3297         struct lpfc_iocbq *iocb;
3298         IOCB_t *cmd = NULL;
3299         int i;
3300         unsigned long flags = 0;
3301
3302         lpfc_hba_down_prep(phba);
3303
3304         lpfc_fabric_abort_hba(phba);
3305
3306         spin_lock_irqsave(&phba->hbalock, flags);
3307         for (i = 0; i < psli->num_rings; i++) {
3308                 pring = &psli->ring[i];
3309                 if (pring->ringno == LPFC_ELS_RING) /* Only slow rings */
3310                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
3311
3312                 /*
3313                  * Error everything on the txq since these iocbs have not been
3314                  * given to the FW yet.
3315                  */
3316                 list_splice_init(&pring->txq, &completions);
3317                 pring->txq_cnt = 0;
3318
3319         }
3320         spin_unlock_irqrestore(&phba->hbalock, flags);
3321
3322         while (!list_empty(&completions)) {
3323                 list_remove_head(&completions, iocb, struct lpfc_iocbq, list);
3324                 cmd = &iocb->iocb;
3325
3326                 if (!iocb->iocb_cmpl)
3327                         lpfc_sli_release_iocbq(phba, iocb);
3328                 else {
3329                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3330                         cmd->un.ulpWord[4] = IOERR_SLI_DOWN;
3331                         (iocb->iocb_cmpl) (phba, iocb, iocb);
3332                 }
3333         }
3334
3335         spin_lock_irqsave(&phba->hbalock, flags);
3336         list_splice_init(&phba->elsbuf, &completions);
3337         phba->elsbuf_cnt = 0;
3338         phba->elsbuf_prev_cnt = 0;
3339         spin_unlock_irqrestore(&phba->hbalock, flags);
3340
3341         while (!list_empty(&completions)) {
3342                 list_remove_head(&completions, buf_ptr,
3343                         struct lpfc_dmabuf, list);
3344                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
3345                 kfree(buf_ptr);
3346         }
3347
3348         /* Return any active mbox cmds */
3349         del_timer_sync(&psli->mbox_tmo);
3350         spin_lock_irqsave(&phba->hbalock, flags);
3351
3352         spin_lock(&phba->pport->work_port_lock);
3353         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
3354         spin_unlock(&phba->pport->work_port_lock);
3355
3356         if (psli->mbox_active) {
3357                 list_add_tail(&psli->mbox_active->list, &completions);
3358                 psli->mbox_active = NULL;
3359                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
3360         }
3361
3362         /* Return any pending or completed mbox cmds */
3363         list_splice_init(&phba->sli.mboxq, &completions);
3364         list_splice_init(&phba->sli.mboxq_cmpl, &completions);
3365         INIT_LIST_HEAD(&psli->mboxq);
3366         INIT_LIST_HEAD(&psli->mboxq_cmpl);
3367
3368         spin_unlock_irqrestore(&phba->hbalock, flags);
3369
3370         while (!list_empty(&completions)) {
3371                 list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
3372                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
3373                 if (pmb->mbox_cmpl) {
3374                         pmb->mbox_cmpl(phba,pmb);
3375                 }
3376         }
3377         return 1;
3378 }
3379
3380 void
3381 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
3382 {
3383         uint32_t *src = srcp;
3384         uint32_t *dest = destp;
3385         uint32_t ldata;
3386         int i;
3387
3388         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
3389                 ldata = *src;
3390                 ldata = le32_to_cpu(ldata);
3391                 *dest = ldata;
3392                 src++;
3393                 dest++;
3394         }
3395 }
3396
3397 int
3398 lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3399                          struct lpfc_dmabuf *mp)
3400 {
3401         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
3402            later */
3403         spin_lock_irq(&phba->hbalock);
3404         list_add_tail(&mp->list, &pring->postbufq);
3405         pring->postbufq_cnt++;
3406         spin_unlock_irq(&phba->hbalock);
3407         return 0;
3408 }
3409
3410 uint32_t
3411 lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
3412 {
3413         spin_lock_irq(&phba->hbalock);
3414         phba->buffer_tag_count++;
3415         /*
3416          * Always set the QUE_BUFTAG_BIT to distiguish between
3417          * a tag assigned by HBQ.
3418          */
3419         phba->buffer_tag_count |= QUE_BUFTAG_BIT;
3420         spin_unlock_irq(&phba->hbalock);
3421         return phba->buffer_tag_count;
3422 }
3423
3424 struct lpfc_dmabuf *
3425 lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3426                         uint32_t tag)
3427 {
3428         struct lpfc_dmabuf *mp, *next_mp;
3429         struct list_head *slp = &pring->postbufq;
3430
3431         /* Search postbufq, from the begining, looking for a match on tag */
3432         spin_lock_irq(&phba->hbalock);
3433         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
3434                 if (mp->buffer_tag == tag) {
3435                         list_del_init(&mp->list);
3436                         pring->postbufq_cnt--;
3437                         spin_unlock_irq(&phba->hbalock);
3438                         return mp;
3439                 }
3440         }
3441
3442         spin_unlock_irq(&phba->hbalock);
3443         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3444                         "0410 Cannot find virtual addr for buffer tag on "
3445                         "ring %d Data x%lx x%p x%p x%x\n",
3446                         pring->ringno, (unsigned long) tag,
3447                         slp->next, slp->prev, pring->postbufq_cnt);
3448
3449         return NULL;
3450 }
3451
3452 struct lpfc_dmabuf *
3453 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3454                          dma_addr_t phys)
3455 {
3456         struct lpfc_dmabuf *mp, *next_mp;
3457         struct list_head *slp = &pring->postbufq;
3458
3459         /* Search postbufq, from the begining, looking for a match on phys */
3460         spin_lock_irq(&phba->hbalock);
3461         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
3462                 if (mp->phys == phys) {
3463                         list_del_init(&mp->list);
3464                         pring->postbufq_cnt--;
3465                         spin_unlock_irq(&phba->hbalock);
3466                         return mp;
3467                 }
3468         }
3469
3470         spin_unlock_irq(&phba->hbalock);
3471         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3472                         "0410 Cannot find virtual addr for mapped buf on "
3473                         "ring %d Data x%llx x%p x%p x%x\n",
3474                         pring->ringno, (unsigned long long)phys,
3475                         slp->next, slp->prev, pring->postbufq_cnt);
3476         return NULL;
3477 }
3478
3479 static void
3480 lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3481                         struct lpfc_iocbq *rspiocb)
3482 {
3483         IOCB_t *irsp = &rspiocb->iocb;
3484         uint16_t abort_iotag, abort_context;
3485         struct lpfc_iocbq *abort_iocb;
3486         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
3487
3488         abort_iocb = NULL;
3489
3490         if (irsp->ulpStatus) {
3491                 abort_context = cmdiocb->iocb.un.acxri.abortContextTag;
3492                 abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag;
3493
3494                 spin_lock_irq(&phba->hbalock);
3495                 if (abort_iotag != 0 && abort_iotag <= phba->sli.last_iotag)
3496                         abort_iocb = phba->sli.iocbq_lookup[abort_iotag];
3497
3498                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_SLI,
3499                                 "0327 Cannot abort els iocb %p "
3500                                 "with tag %x context %x, abort status %x, "
3501                                 "abort code %x\n",
3502                                 abort_iocb, abort_iotag, abort_context,
3503                                 irsp->ulpStatus, irsp->un.ulpWord[4]);
3504
3505                 /*
3506                  * make sure we have the right iocbq before taking it
3507                  * off the txcmplq and try to call completion routine.
3508                  */
3509                 if (!abort_iocb ||
3510                     abort_iocb->iocb.ulpContext != abort_context ||
3511                     (abort_iocb->iocb_flag & LPFC_DRIVER_ABORTED) == 0)
3512                         spin_unlock_irq(&phba->hbalock);
3513                 else {
3514                         list_del_init(&abort_iocb->list);
3515                         pring->txcmplq_cnt--;
3516                         spin_unlock_irq(&phba->hbalock);
3517
3518                         /* Firmware could still be in progress of DMAing
3519                          * payload, so don't free data buffer till after
3520                          * a hbeat.
3521                          */
3522                         abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE;
3523
3524                         abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED;
3525                         abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
3526                         abort_iocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
3527                         (abort_iocb->iocb_cmpl)(phba, abort_iocb, abort_iocb);
3528                 }
3529         }
3530
3531         lpfc_sli_release_iocbq(phba, cmdiocb);
3532         return;
3533 }
3534
3535 static void
3536 lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3537                      struct lpfc_iocbq *rspiocb)
3538 {
3539         IOCB_t *irsp = &rspiocb->iocb;
3540
3541         /* ELS cmd tag <ulpIoTag> completes */
3542         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
3543                         "0133 Ignoring ELS cmd tag x%x completion Data: "
3544                         "x%x x%x x%x\n",
3545                         irsp->ulpIoTag, irsp->ulpStatus,
3546                         irsp->un.ulpWord[4], irsp->ulpTimeout);
3547         if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR)
3548                 lpfc_ct_free_iocb(phba, cmdiocb);
3549         else
3550                 lpfc_els_free_iocb(phba, cmdiocb);
3551         return;
3552 }
3553
3554 int
3555 lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3556                            struct lpfc_iocbq *cmdiocb)
3557 {
3558         struct lpfc_vport *vport = cmdiocb->vport;
3559         struct lpfc_iocbq *abtsiocbp;
3560         IOCB_t *icmd = NULL;
3561         IOCB_t *iabt = NULL;
3562         int retval = IOCB_ERROR;
3563
3564         /*
3565          * There are certain command types we don't want to abort.  And we
3566          * don't want to abort commands that are already in the process of
3567          * being aborted.
3568          */
3569         icmd = &cmdiocb->iocb;
3570         if (icmd->ulpCommand == CMD_ABORT_XRI_CN ||
3571             icmd->ulpCommand == CMD_CLOSE_XRI_CN ||
3572             (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0)
3573                 return 0;
3574
3575         /* If we're unloading, don't abort iocb on the ELS ring, but change the
3576          * callback so that nothing happens when it finishes.
3577          */
3578         if ((vport->load_flag & FC_UNLOADING) &&
3579             (pring->ringno == LPFC_ELS_RING)) {
3580                 if (cmdiocb->iocb_flag & LPFC_IO_FABRIC)
3581                         cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl;
3582                 else
3583                         cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl;
3584                 goto abort_iotag_exit;
3585         }
3586
3587         /* issue ABTS for this IOCB based on iotag */
3588         abtsiocbp = __lpfc_sli_get_iocbq(phba);
3589         if (abtsiocbp == NULL)
3590                 return 0;
3591
3592         /* This signals the response to set the correct status
3593          * before calling the completion handler.
3594          */
3595         cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED;
3596
3597         iabt = &abtsiocbp->iocb;
3598         iabt->un.acxri.abortType = ABORT_TYPE_ABTS;
3599         iabt->un.acxri.abortContextTag = icmd->ulpContext;
3600         iabt->un.acxri.abortIoTag = icmd->ulpIoTag;
3601         iabt->ulpLe = 1;
3602         iabt->ulpClass = icmd->ulpClass;
3603
3604         if (phba->link_state >= LPFC_LINK_UP)
3605                 iabt->ulpCommand = CMD_ABORT_XRI_CN;
3606         else
3607                 iabt->ulpCommand = CMD_CLOSE_XRI_CN;
3608
3609         abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl;
3610
3611         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3612                          "0339 Abort xri x%x, original iotag x%x, "
3613                          "abort cmd iotag x%x\n",
3614                          iabt->un.acxri.abortContextTag,
3615                          iabt->un.acxri.abortIoTag, abtsiocbp->iotag);
3616         retval = __lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0);
3617
3618 abort_iotag_exit:
3619         /*
3620          * Caller to this routine should check for IOCB_ERROR
3621          * and handle it properly.  This routine no longer removes
3622          * iocb off txcmplq and call compl in case of IOCB_ERROR.
3623          */
3624         return retval;
3625 }
3626
3627 static int
3628 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport,
3629                            uint16_t tgt_id, uint64_t lun_id,
3630                            lpfc_ctx_cmd ctx_cmd)
3631 {
3632         struct lpfc_scsi_buf *lpfc_cmd;
3633         struct scsi_cmnd *cmnd;
3634         int rc = 1;
3635
3636         if (!(iocbq->iocb_flag &  LPFC_IO_FCP))
3637                 return rc;
3638
3639         if (iocbq->vport != vport)
3640                 return rc;
3641
3642         lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
3643         cmnd = lpfc_cmd->pCmd;
3644
3645         if (cmnd == NULL)
3646                 return rc;
3647
3648         switch (ctx_cmd) {
3649         case LPFC_CTX_LUN:
3650                 if ((cmnd->device->id == tgt_id) &&
3651                     (cmnd->device->lun == lun_id))
3652                         rc = 0;
3653                 break;
3654         case LPFC_CTX_TGT:
3655                 if (cmnd->device->id == tgt_id)
3656                         rc = 0;
3657                 break;
3658         case LPFC_CTX_HOST:
3659                 rc = 0;
3660                 break;
3661         default:
3662                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
3663                         __FUNCTION__, ctx_cmd);
3664                 break;
3665         }
3666
3667         return rc;
3668 }
3669
3670 int
3671 lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
3672                   lpfc_ctx_cmd ctx_cmd)
3673 {
3674         struct lpfc_hba *phba = vport->phba;
3675         struct lpfc_iocbq *iocbq;
3676         int sum, i;
3677
3678         for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
3679                 iocbq = phba->sli.iocbq_lookup[i];
3680
3681                 if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id,
3682                                                 ctx_cmd) == 0)
3683                         sum++;
3684         }
3685
3686         return sum;
3687 }
3688
3689 void
3690 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3691                         struct lpfc_iocbq *rspiocb)
3692 {
3693         lpfc_sli_release_iocbq(phba, cmdiocb);
3694         return;
3695 }
3696
3697 int
3698 lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
3699                     uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd)
3700 {
3701         struct lpfc_hba *phba = vport->phba;
3702         struct lpfc_iocbq *iocbq;
3703         struct lpfc_iocbq *abtsiocb;
3704         IOCB_t *cmd = NULL;
3705         int errcnt = 0, ret_val = 0;
3706         int i;
3707
3708         for (i = 1; i <= phba->sli.last_iotag; i++) {
3709                 iocbq = phba->sli.iocbq_lookup[i];
3710
3711                 if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
3712                                                abort_cmd) != 0)
3713                         continue;
3714
3715                 /* issue ABTS for this IOCB based on iotag */
3716                 abtsiocb = lpfc_sli_get_iocbq(phba);
3717                 if (abtsiocb == NULL) {
3718                         errcnt++;
3719                         continue;
3720                 }
3721
3722                 cmd = &iocbq->iocb;
3723                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
3724                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
3725                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
3726                 abtsiocb->iocb.ulpLe = 1;
3727                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
3728                 abtsiocb->vport = phba->pport;
3729
3730                 if (lpfc_is_link_up(phba))
3731                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
3732                 else
3733                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
3734
3735                 /* Setup callback routine and issue the command. */
3736                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
3737                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
3738                 if (ret_val == IOCB_ERROR) {
3739                         lpfc_sli_release_iocbq(phba, abtsiocb);
3740                         errcnt++;
3741                         continue;
3742                 }
3743         }
3744
3745         return errcnt;
3746 }
3747
3748 static void
3749 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
3750                         struct lpfc_iocbq *cmdiocbq,
3751                         struct lpfc_iocbq *rspiocbq)
3752 {
3753         wait_queue_head_t *pdone_q;
3754         unsigned long iflags;
3755
3756         spin_lock_irqsave(&phba->hbalock, iflags);
3757         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
3758         if (cmdiocbq->context2 && rspiocbq)
3759                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
3760                        &rspiocbq->iocb, sizeof(IOCB_t));
3761
3762         pdone_q = cmdiocbq->context_un.wait_queue;
3763         if (pdone_q)
3764                 wake_up(pdone_q);
3765         spin_unlock_irqrestore(&phba->hbalock, iflags);
3766         return;
3767 }
3768
3769 /*
3770  * Issue the caller's iocb and wait for its completion, but no longer than the
3771  * caller's timeout.  Note that iocb_flags is cleared before the
3772  * lpfc_sli_issue_call since the wake routine sets a unique value and by
3773  * definition this is a wait function.
3774  */
3775
3776 int
3777 lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
3778                          struct lpfc_sli_ring *pring,
3779                          struct lpfc_iocbq *piocb,
3780                          struct lpfc_iocbq *prspiocbq,
3781                          uint32_t timeout)
3782 {
3783         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3784         long timeleft, timeout_req = 0;
3785         int retval = IOCB_SUCCESS;
3786         uint32_t creg_val;
3787
3788         /*
3789          * If the caller has provided a response iocbq buffer, then context2
3790          * is NULL or its an error.
3791          */
3792         if (prspiocbq) {
3793                 if (piocb->context2)
3794                         return IOCB_ERROR;
3795                 piocb->context2 = prspiocbq;
3796         }
3797
3798         piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
3799         piocb->context_un.wait_queue = &done_q;
3800         piocb->iocb_flag &= ~LPFC_IO_WAKE;
3801
3802         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3803                 creg_val = readl(phba->HCregaddr);
3804                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
3805                 writel(creg_val, phba->HCregaddr);
3806                 readl(phba->HCregaddr); /* flush */
3807         }
3808
3809         retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
3810         if (retval == IOCB_SUCCESS) {
3811                 timeout_req = timeout * HZ;
3812                 timeleft = wait_event_timeout(done_q,
3813                                 piocb->iocb_flag & LPFC_IO_WAKE,
3814                                 timeout_req);
3815
3816                 if (piocb->iocb_flag & LPFC_IO_WAKE) {
3817                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3818                                         "0331 IOCB wake signaled\n");
3819                 } else if (timeleft == 0) {
3820                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3821                                         "0338 IOCB wait timeout error - no "
3822                                         "wake response Data x%x\n", timeout);
3823                         retval = IOCB_TIMEDOUT;
3824                 } else {
3825                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3826                                         "0330 IOCB wake NOT set, "
3827                                         "Data x%x x%lx\n",
3828                                         timeout, (timeleft / jiffies));
3829                         retval = IOCB_TIMEDOUT;
3830                 }
3831         } else {
3832                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3833                                 ":0332 IOCB wait issue failed, Data x%x\n",
3834                                 retval);
3835                 retval = IOCB_ERROR;
3836         }
3837
3838         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3839                 creg_val = readl(phba->HCregaddr);
3840                 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
3841                 writel(creg_val, phba->HCregaddr);
3842                 readl(phba->HCregaddr); /* flush */
3843         }
3844
3845         if (prspiocbq)
3846                 piocb->context2 = NULL;
3847
3848         piocb->context_un.wait_queue = NULL;
3849         piocb->iocb_cmpl = NULL;
3850         return retval;
3851 }
3852
3853 int
3854 lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
3855                          uint32_t timeout)
3856 {
3857         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3858         int retval;
3859         unsigned long flag;
3860
3861         /* The caller must leave context1 empty. */
3862         if (pmboxq->context1)
3863                 return MBX_NOT_FINISHED;
3864
3865         /* setup wake call as IOCB callback */
3866         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
3867         /* setup context field to pass wait_queue pointer to wake function  */
3868         pmboxq->context1 = &done_q;
3869
3870         /* now issue the command */
3871         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3872
3873         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
3874                 wait_event_interruptible_timeout(done_q,
3875                                 pmboxq->mbox_flag & LPFC_MBX_WAKE,
3876                                 timeout * HZ);
3877
3878                 spin_lock_irqsave(&phba->hbalock, flag);
3879                 pmboxq->context1 = NULL;
3880                 /*
3881                  * if LPFC_MBX_WAKE flag is set the mailbox is completed
3882                  * else do not free the resources.
3883                  */
3884                 if (pmboxq->mbox_flag & LPFC_MBX_WAKE)
3885                         retval = MBX_SUCCESS;
3886                 else {
3887                         retval = MBX_TIMEOUT;
3888                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3889                 }
3890                 spin_unlock_irqrestore(&phba->hbalock, flag);
3891         }
3892
3893         return retval;
3894 }
3895
3896 int
3897 lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba)
3898 {
3899         struct lpfc_vport *vport = phba->pport;
3900         int i = 0;
3901         uint32_t ha_copy;
3902
3903         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !vport->stopped) {
3904                 if (i++ > LPFC_MBOX_TMO * 1000)
3905                         return 1;
3906
3907                 /*
3908                  * Call lpfc_sli_handle_mb_event only if a mailbox cmd
3909                  * did finish. This way we won't get the misleading
3910                  * "Stray Mailbox Interrupt" message.
3911                  */
3912                 spin_lock_irq(&phba->hbalock);
3913                 ha_copy = phba->work_ha;
3914                 phba->work_ha &= ~HA_MBATT;
3915                 spin_unlock_irq(&phba->hbalock);
3916
3917                 if (ha_copy & HA_MBATT)
3918                         if (lpfc_sli_handle_mb_event(phba) == 0)
3919                                 i = 0;
3920
3921                 msleep(1);
3922         }
3923
3924         return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0;
3925 }
3926
3927 irqreturn_t
3928 lpfc_intr_handler(int irq, void *dev_id)
3929 {
3930         struct lpfc_hba  *phba;
3931         uint32_t ha_copy;
3932         uint32_t work_ha_copy;
3933         unsigned long status;
3934         uint32_t control;
3935
3936         MAILBOX_t *mbox, *pmbox;
3937         struct lpfc_vport *vport;
3938         struct lpfc_nodelist *ndlp;
3939         struct lpfc_dmabuf *mp;
3940         LPFC_MBOXQ_t *pmb;
3941         int rc;
3942
3943         /*
3944          * Get the driver's phba structure from the dev_id and
3945          * assume the HBA is not interrupting.
3946          */
3947         phba = (struct lpfc_hba *) dev_id;
3948
3949         if (unlikely(!phba))
3950                 return IRQ_NONE;
3951
3952         /* If the pci channel is offline, ignore all the interrupts. */
3953         if (unlikely(pci_channel_offline(phba->pcidev)))
3954                 return IRQ_NONE;
3955
3956         phba->sli.slistat.sli_intr++;
3957
3958         /*
3959          * Call the HBA to see if it is interrupting.  If not, don't claim
3960          * the interrupt
3961          */
3962
3963         /* Ignore all interrupts during initialization. */
3964         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
3965                 return IRQ_NONE;
3966
3967         /*
3968          * Read host attention register to determine interrupt source
3969          * Clear Attention Sources, except Error Attention (to
3970          * preserve status) and Link Attention
3971          */
3972         spin_lock(&phba->hbalock);
3973         ha_copy = readl(phba->HAregaddr);
3974         /* If somebody is waiting to handle an eratt don't process it
3975          * here.  The brdkill function will do this.
3976          */
3977         if (phba->link_flag & LS_IGNORE_ERATT)
3978                 ha_copy &= ~HA_ERATT;
3979         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
3980         readl(phba->HAregaddr); /* flush */
3981         spin_unlock(&phba->hbalock);
3982
3983         if (unlikely(!ha_copy))
3984                 return IRQ_NONE;
3985
3986         work_ha_copy = ha_copy & phba->work_ha_mask;
3987
3988         if (unlikely(work_ha_copy)) {
3989                 if (work_ha_copy & HA_LATT) {
3990                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
3991                                 /*
3992                                  * Turn off Link Attention interrupts
3993                                  * until CLEAR_LA done
3994                                  */
3995                                 spin_lock(&phba->hbalock);
3996                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
3997                                 control = readl(phba->HCregaddr);
3998                                 control &= ~HC_LAINT_ENA;
3999                                 writel(control, phba->HCregaddr);
4000                                 readl(phba->HCregaddr); /* flush */
4001                                 spin_unlock(&phba->hbalock);
4002                         }
4003                         else
4004                                 work_ha_copy &= ~HA_LATT;
4005                 }
4006
4007                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
4008                         /*
4009                          * Turn off Slow Rings interrupts, LPFC_ELS_RING is
4010                          * the only slow ring.
4011                          */
4012                         status = (work_ha_copy &
4013                                 (HA_RXMASK  << (4*LPFC_ELS_RING)));
4014                         status >>= (4*LPFC_ELS_RING);
4015                         if (status & HA_RXMASK) {
4016                                 spin_lock(&phba->hbalock);
4017                                 control = readl(phba->HCregaddr);
4018
4019                                 lpfc_debugfs_slow_ring_trc(phba,
4020                                 "ISR slow ring:   ctl:x%x stat:x%x isrcnt:x%x",
4021                                 control, status,
4022                                 (uint32_t)phba->sli.slistat.sli_intr);
4023
4024                                 if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
4025                                         lpfc_debugfs_slow_ring_trc(phba,
4026                                                 "ISR Disable ring:"
4027                                                 "pwork:x%x hawork:x%x wait:x%x",
4028                                                 phba->work_ha, work_ha_copy,
4029                                                 (uint32_t)((unsigned long)
4030                                                 phba->work_wait));
4031
4032                                         control &=
4033                                             ~(HC_R0INT_ENA << LPFC_ELS_RING);
4034                                         writel(control, phba->HCregaddr);
4035                                         readl(phba->HCregaddr); /* flush */
4036                                 }
4037                                 else {
4038                                         lpfc_debugfs_slow_ring_trc(phba,
4039                                                 "ISR slow ring:   pwork:"
4040                                                 "x%x hawork:x%x wait:x%x",
4041                                                 phba->work_ha, work_ha_copy,
4042                                                 (uint32_t)((unsigned long)
4043                                                 phba->work_wait));
4044                                 }
4045                                 spin_unlock(&phba->hbalock);
4046                         }
4047                 }
4048
4049                 if (work_ha_copy & HA_ERATT) {
4050                         phba->link_state = LPFC_HBA_ERROR;
4051                         /*
4052                          * There was a link/board error.  Read the
4053                          * status register to retrieve the error event
4054                          * and process it.
4055                          */
4056                         phba->sli.slistat.err_attn_event++;
4057                         /* Save status info */
4058                         phba->work_hs = readl(phba->HSregaddr);
4059                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
4060                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
4061
4062                         /* Clear Chip error bit */
4063                         writel(HA_ERATT, phba->HAregaddr);
4064                         readl(phba->HAregaddr); /* flush */
4065                         phba->pport->stopped = 1;
4066                 }
4067
4068                 if ((work_ha_copy & HA_MBATT) &&
4069                     (phba->sli.mbox_active)) {
4070                         pmb = phba->sli.mbox_active;
4071                         pmbox = &pmb->mb;
4072                         mbox = &phba->slim2p->mbx;
4073                         vport = pmb->vport;
4074
4075                         /* First check out the status word */
4076                         lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t));
4077                         if (pmbox->mbxOwner != OWN_HOST) {
4078                                 /*
4079                                  * Stray Mailbox Interrupt, mbxCommand <cmd>
4080                                  * mbxStatus <status>
4081                                  */
4082                                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX |
4083                                                 LOG_SLI,
4084                                                 "(%d):0304 Stray Mailbox "
4085                                                 "Interrupt mbxCommand x%x "
4086                                                 "mbxStatus x%x\n",
4087                                                 (vport ? vport->vpi : 0),
4088                                                 pmbox->mbxCommand,
4089                                                 pmbox->mbxStatus);
4090                         }
4091                         phba->last_completion_time = jiffies;
4092                         del_timer_sync(&phba->sli.mbox_tmo);
4093
4094                         phba->sli.mbox_active = NULL;
4095                         if (pmb->mbox_cmpl) {
4096                                 lpfc_sli_pcimem_bcopy(mbox, pmbox,
4097                                                       MAILBOX_CMD_SIZE);
4098                         }
4099                         if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
4100                                 pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
4101
4102                                 lpfc_debugfs_disc_trc(vport,
4103                                         LPFC_DISC_TRC_MBOX_VPORT,
4104                                         "MBOX dflt rpi: : status:x%x rpi:x%x",
4105                                         (uint32_t)pmbox->mbxStatus,
4106                                         pmbox->un.varWords[0], 0);
4107
4108                                 if ( !pmbox->mbxStatus) {
4109                                         mp = (struct lpfc_dmabuf *)
4110                                                 (pmb->context1);
4111                                         ndlp = (struct lpfc_nodelist *)
4112                                                 pmb->context2;
4113
4114                                         /* Reg_LOGIN of dflt RPI was successful.
4115                                          * new lets get rid of the RPI using the
4116                                          * same mbox buffer.
4117                                          */
4118                                         lpfc_unreg_login(phba, vport->vpi,
4119                                                 pmbox->un.varWords[0], pmb);
4120                                         pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
4121                                         pmb->context1 = mp;
4122                                         pmb->context2 = ndlp;
4123                                         pmb->vport = vport;
4124                                         spin_lock(&phba->hbalock);
4125                                         phba->sli.sli_flag &=
4126                                                 ~LPFC_SLI_MBOX_ACTIVE;
4127                                         spin_unlock(&phba->hbalock);
4128                                         goto send_current_mbox;
4129                                 }
4130                         }
4131                         spin_lock(&phba->pport->work_port_lock);
4132                         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
4133                         spin_unlock(&phba->pport->work_port_lock);
4134                         lpfc_mbox_cmpl_put(phba, pmb);
4135                 }
4136                 if ((work_ha_copy & HA_MBATT) &&
4137                     (phba->sli.mbox_active == NULL)) {
4138 send_next_mbox:
4139                         spin_lock(&phba->hbalock);
4140                         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
4141                         pmb = lpfc_mbox_get(phba);
4142                         spin_unlock(&phba->hbalock);
4143 send_current_mbox:
4144                         /* Process next mailbox command if there is one */
4145                         if (pmb != NULL) {
4146                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
4147                                 if (rc == MBX_NOT_FINISHED) {
4148                                         pmb->mb.mbxStatus = MBX_NOT_FINISHED;
4149                                         lpfc_mbox_cmpl_put(phba, pmb);
4150                                         goto send_next_mbox;
4151                                 }
4152                         }
4153
4154                 }
4155
4156                 spin_lock(&phba->hbalock);
4157                 phba->work_ha |= work_ha_copy;
4158                 if (phba->work_wait)
4159                         lpfc_worker_wake_up(phba);
4160                 spin_unlock(&phba->hbalock);
4161         }
4162
4163         ha_copy &= ~(phba->work_ha_mask);
4164
4165         /*
4166          * Process all events on FCP ring.  Take the optimized path for
4167          * FCP IO.  Any other IO is slow path and is handled by
4168          * the worker thread.
4169          */
4170         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
4171         status >>= (4*LPFC_FCP_RING);
4172         if (status & HA_RXMASK)
4173                 lpfc_sli_handle_fast_ring_event(phba,
4174                                                 &phba->sli.ring[LPFC_FCP_RING],
4175                                                 status);
4176
4177         if (phba->cfg_multi_ring_support == 2) {
4178                 /*
4179                  * Process all events on extra ring.  Take the optimized path
4180                  * for extra ring IO.  Any other IO is slow path and is handled
4181                  * by the worker thread.
4182                  */
4183                 status = (ha_copy & (HA_RXMASK  << (4*LPFC_EXTRA_RING)));
4184                 status >>= (4*LPFC_EXTRA_RING);
4185                 if (status & HA_RXMASK) {
4186                         lpfc_sli_handle_fast_ring_event(phba,
4187                                         &phba->sli.ring[LPFC_EXTRA_RING],
4188                                         status);
4189                 }
4190         }
4191         return IRQ_HANDLED;
4192
4193 } /* lpfc_intr_handler */