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   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2008 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         case CMD_IOCB_RET_XRI64_CX:
 207                 type = LPFC_UNSOL_IOCB;
 208                 break;
 209         case CMD_IOCB_XMIT_MSEQ64_CR:
 210         case CMD_IOCB_XMIT_MSEQ64_CX:
 211         case CMD_IOCB_RCV_SEQ_LIST64_CX:
 212         case CMD_IOCB_RCV_ELS_LIST64_CX:
 213         case CMD_IOCB_CLOSE_EXTENDED_CN:
 214         case CMD_IOCB_ABORT_EXTENDED_CN:
 215         case CMD_IOCB_RET_HBQE64_CN:
 216         case CMD_IOCB_FCP_IBIDIR64_CR:
 217         case CMD_IOCB_FCP_IBIDIR64_CX:
 218         case CMD_IOCB_FCP_ITASKMGT64_CX:
 219         case CMD_IOCB_LOGENTRY_CN:
 220         case CMD_IOCB_LOGENTRY_ASYNC_CN:
 221                 printk("%s - Unhandled SLI-3 Command x%x\n",
 222                                 __func__, iocb_cmnd);
 223                 type = LPFC_UNKNOWN_IOCB;
 224                 break;
 225         default:
 226                 type = LPFC_UNKNOWN_IOCB;
 227                 break;
 228         }
 229
 230         return type;
 231 }
 232
 233 static int
 234 lpfc_sli_ring_map(struct lpfc_hba *phba)
 235 {
 236         struct lpfc_sli *psli = &phba->sli;
 237         LPFC_MBOXQ_t *pmb;
 238         MAILBOX_t *pmbox;
 239         int i, rc, ret = 0;
 240
 241         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 242         if (!pmb)
 243                 return -ENOMEM;
 244         pmbox = &pmb->mb;
 245         phba->link_state = LPFC_INIT_MBX_CMDS;
 246         for (i = 0; i < psli->num_rings; i++) {
 247                 lpfc_config_ring(phba, i, pmb);
 248                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 249                 if (rc != MBX_SUCCESS) {
 250                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 251                                         "0446 Adapter failed to init (%d), "
 252                                         "mbxCmd x%x CFG_RING, mbxStatus x%x, "
 253                                         "ring %d\n",
 254                                         rc, pmbox->mbxCommand,
 255                                         pmbox->mbxStatus, i);
 256                         phba->link_state = LPFC_HBA_ERROR;
 257                         ret = -ENXIO;
 258                         break;
 259                 }
 260         }
 261         mempool_free(pmb, phba->mbox_mem_pool);
 262         return ret;
 263 }
 264
 265 static int
 266 lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 267                         struct lpfc_iocbq *piocb)
 268 {
 269         list_add_tail(&piocb->list, &pring->txcmplq);
 270         pring->txcmplq_cnt++;
 271         if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
 272            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
 273            (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
 274                 if (!piocb->vport)
 275                         BUG();
 276                 else
 277                         mod_timer(&piocb->vport->els_tmofunc,
 278                                   jiffies + HZ * (phba->fc_ratov << 1));
 279         }
 280
 281
 282         return 0;
 283 }
 284
 285 static struct lpfc_iocbq *
 286 lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 287 {
 288         struct lpfc_iocbq *cmd_iocb;
 289
 290         list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list);
 291         if (cmd_iocb != NULL)
 292                 pring->txq_cnt--;
 293         return cmd_iocb;
 294 }
 295
 296 static IOCB_t *
 297 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 298 {
 299         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
 300                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
 301                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
 302         uint32_t  max_cmd_idx = pring->numCiocb;
 303
 304         if ((pring->next_cmdidx == pring->cmdidx) &&
 305            (++pring->next_cmdidx >= max_cmd_idx))
 306                 pring->next_cmdidx = 0;
 307
 308         if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
 309
 310                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
 311
 312                 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
 313                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 314                                         "0315 Ring %d issue: portCmdGet %d "
 315                                         "is bigger then cmd ring %d\n",
 316                                         pring->ringno,
 317                                         pring->local_getidx, max_cmd_idx);
 318
 319                         phba->link_state = LPFC_HBA_ERROR;
 320                         /*
 321                          * All error attention handlers are posted to
 322                          * worker thread
 323                          */
 324                         phba->work_ha |= HA_ERATT;
 325                         phba->work_hs = HS_FFER3;
 326
 327                         lpfc_worker_wake_up(phba);
 328
 329                         return NULL;
 330                 }
 331
 332                 if (pring->local_getidx == pring->next_cmdidx)
 333                         return NULL;
 334         }
 335
 336         return lpfc_cmd_iocb(phba, pring);
 337 }
 338
 339 uint16_t
 340 lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
 341 {
 342         struct lpfc_iocbq **new_arr;
 343         struct lpfc_iocbq **old_arr;
 344         size_t new_len;
 345         struct lpfc_sli *psli = &phba->sli;
 346         uint16_t iotag;
 347
 348         spin_lock_irq(&phba->hbalock);
 349         iotag = psli->last_iotag;
 350         if(++iotag < psli->iocbq_lookup_len) {
 351                 psli->last_iotag = iotag;
 352                 psli->iocbq_lookup[iotag] = iocbq;
 353                 spin_unlock_irq(&phba->hbalock);
 354                 iocbq->iotag = iotag;
 355                 return iotag;
 356         } else if (psli->iocbq_lookup_len < (0xffff
 357                                            - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
 358                 new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
 359                 spin_unlock_irq(&phba->hbalock);
 360                 new_arr = kzalloc(new_len * sizeof (struct lpfc_iocbq *),
 361                                   GFP_KERNEL);
 362                 if (new_arr) {
 363                         spin_lock_irq(&phba->hbalock);
 364                         old_arr = psli->iocbq_lookup;
 365                         if (new_len <= psli->iocbq_lookup_len) {
 366                                 /* highly unprobable case */
 367                                 kfree(new_arr);
 368                                 iotag = psli->last_iotag;
 369                                 if(++iotag < psli->iocbq_lookup_len) {
 370                                         psli->last_iotag = iotag;
 371                                         psli->iocbq_lookup[iotag] = iocbq;
 372                                         spin_unlock_irq(&phba->hbalock);
 373                                         iocbq->iotag = iotag;
 374                                         return iotag;
 375                                 }
 376                                 spin_unlock_irq(&phba->hbalock);
 377                                 return 0;
 378                         }
 379                         if (psli->iocbq_lookup)
 380                                 memcpy(new_arr, old_arr,
 381                                        ((psli->last_iotag  + 1) *
 382                                         sizeof (struct lpfc_iocbq *)));
 383                         psli->iocbq_lookup = new_arr;
 384                         psli->iocbq_lookup_len = new_len;
 385                         psli->last_iotag = iotag;
 386                         psli->iocbq_lookup[iotag] = iocbq;
 387                         spin_unlock_irq(&phba->hbalock);
 388                         iocbq->iotag = iotag;
 389                         kfree(old_arr);
 390                         return iotag;
 391                 }
 392         } else
 393                 spin_unlock_irq(&phba->hbalock);
 394
 395         lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
 396                         "0318 Failed to allocate IOTAG.last IOTAG is %d\n",
 397                         psli->last_iotag);
 398
 399         return 0;
 400 }
 401
 402 static void
 403 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 404                 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
 405 {
 406         /*
 407          * Set up an iotag
 408          */
 409         nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
 410
 411         if (pring->ringno == LPFC_ELS_RING) {
 412                 lpfc_debugfs_slow_ring_trc(phba,
 413                         "IOCB cmd ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
 414                         *(((uint32_t *) &nextiocb->iocb) + 4),
 415                         *(((uint32_t *) &nextiocb->iocb) + 6),
 416                         *(((uint32_t *) &nextiocb->iocb) + 7));
 417         }
 418
 419         /*
 420          * Issue iocb command to adapter
 421          */
 422         lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size);
 423         wmb();
 424         pring->stats.iocb_cmd++;
 425
 426         /*
 427          * If there is no completion routine to call, we can release the
 428          * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
 429          * that have no rsp ring completion, iocb_cmpl MUST be NULL.
 430          */
 431         if (nextiocb->iocb_cmpl)
 432                 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
 433         else
 434                 __lpfc_sli_release_iocbq(phba, nextiocb);
 435
 436         /*
 437          * Let the HBA know what IOCB slot will be the next one the
 438          * driver will put a command into.
 439          */
 440         pring->cmdidx = pring->next_cmdidx;
 441         writel(pring->cmdidx, &phba->host_gp[pring->ringno].cmdPutInx);
 442 }
 443
 444 static void
 445 lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 446 {
 447         int ringno = pring->ringno;
 448
 449         pring->flag |= LPFC_CALL_RING_AVAILABLE;
 450
 451         wmb();
 452
 453         /*
 454          * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
 455          * The HBA will tell us when an IOCB entry is available.
 456          */
 457         writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
 458         readl(phba->CAregaddr); /* flush */
 459
 460         pring->stats.iocb_cmd_full++;
 461 }
 462
 463 static void
 464 lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 465 {
 466         int ringno = pring->ringno;
 467
 468         /*
 469          * Tell the HBA that there is work to do in this ring.
 470          */
 471         wmb();
 472         writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
 473         readl(phba->CAregaddr); /* flush */
 474 }
 475
 476 static void
 477 lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 478 {
 479         IOCB_t *iocb;
 480         struct lpfc_iocbq *nextiocb;
 481
 482         /*
 483          * Check to see if:
 484          *  (a) there is anything on the txq to send
 485          *  (b) link is up
 486          *  (c) link attention events can be processed (fcp ring only)
 487          *  (d) IOCB processing is not blocked by the outstanding mbox command.
 488          */
 489         if (pring->txq_cnt &&
 490             lpfc_is_link_up(phba) &&
 491             (pring->ringno != phba->sli.fcp_ring ||
 492              phba->sli.sli_flag & LPFC_PROCESS_LA)) {
 493
 494                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
 495                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
 496                         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
 497
 498                 if (iocb)
 499                         lpfc_sli_update_ring(phba, pring);
 500                 else
 501                         lpfc_sli_update_full_ring(phba, pring);
 502         }
 503
 504         return;
 505 }
 506
 507 static struct lpfc_hbq_entry *
 508 lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
 509 {
 510         struct hbq_s *hbqp = &phba->hbqs[hbqno];
 511
 512         if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx &&
 513             ++hbqp->next_hbqPutIdx >= hbqp->entry_count)
 514                 hbqp->next_hbqPutIdx = 0;
 515
 516         if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) {
 517                 uint32_t raw_index = phba->hbq_get[hbqno];
 518                 uint32_t getidx = le32_to_cpu(raw_index);
 519
 520                 hbqp->local_hbqGetIdx = getidx;
 521
 522                 if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) {
 523                         lpfc_printf_log(phba, KERN_ERR,
 524                                         LOG_SLI | LOG_VPORT,
 525                                         "1802 HBQ %d: local_hbqGetIdx "
 526                                         "%u is > than hbqp->entry_count %u\n",
 527                                         hbqno, hbqp->local_hbqGetIdx,
 528                                         hbqp->entry_count);
 529
 530                         phba->link_state = LPFC_HBA_ERROR;
 531                         return NULL;
 532                 }
 533
 534                 if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)
 535                         return NULL;
 536         }
 537
 538         return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt +
 539                         hbqp->hbqPutIdx;
 540 }
 541
 542 void
 543 lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
 544 {
 545         struct lpfc_dmabuf *dmabuf, *next_dmabuf;
 546         struct hbq_dmabuf *hbq_buf;
 547         unsigned long flags;
 548         int i, hbq_count;
 549         uint32_t hbqno;
 550
 551         hbq_count = lpfc_sli_hbq_count();
 552         /* Return all memory used by all HBQs */
 553         spin_lock_irqsave(&phba->hbalock, flags);
 554         for (i = 0; i < hbq_count; ++i) {
 555                 list_for_each_entry_safe(dmabuf, next_dmabuf,
 556                                 &phba->hbqs[i].hbq_buffer_list, list) {
 557                         hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
 558                         list_del(&hbq_buf->dbuf.list);
 559                         (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
 560                 }
 561                 phba->hbqs[i].buffer_count = 0;
 562         }
 563         /* Return all HBQ buffer that are in-fly */
 564         list_for_each_entry_safe(dmabuf, next_dmabuf,
 565                         &phba->hbqbuf_in_list, list) {
 566                 hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
 567                 list_del(&hbq_buf->dbuf.list);
 568                 if (hbq_buf->tag == -1) {
 569                         (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer)
 570                                 (phba, hbq_buf);
 571                 } else {
 572                         hbqno = hbq_buf->tag >> 16;
 573                         if (hbqno >= LPFC_MAX_HBQS)
 574                                 (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer)
 575                                         (phba, hbq_buf);
 576                         else
 577                                 (phba->hbqs[hbqno].hbq_free_buffer)(phba,
 578                                         hbq_buf);
 579                 }
 580         }
 581
 582         /* Mark the HBQs not in use */
 583         phba->hbq_in_use = 0;
 584         spin_unlock_irqrestore(&phba->hbalock, flags);
 585 }
 586
 587 static struct lpfc_hbq_entry *
 588 lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
 589                          struct hbq_dmabuf *hbq_buf)
 590 {
 591         struct lpfc_hbq_entry *hbqe;
 592         dma_addr_t physaddr = hbq_buf->dbuf.phys;
 593
 594         /* Get next HBQ entry slot to use */
 595         hbqe = lpfc_sli_next_hbq_slot(phba, hbqno);
 596         if (hbqe) {
 597                 struct hbq_s *hbqp = &phba->hbqs[hbqno];
 598
 599                 hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
 600                 hbqe->bde.addrLow  = le32_to_cpu(putPaddrLow(physaddr));
 601                 hbqe->bde.tus.f.bdeSize = hbq_buf->size;
 602                 hbqe->bde.tus.f.bdeFlags = 0;
 603                 hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w);
 604                 hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag);
 605                                 /* Sync SLIM */
 606                 hbqp->hbqPutIdx = hbqp->next_hbqPutIdx;
 607                 writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno);
 608                                 /* flush */
 609                 readl(phba->hbq_put + hbqno);
 610                 list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list);
 611         }
 612         return hbqe;
 613 }
 614
 615 static struct lpfc_hbq_init lpfc_els_hbq = {
 616         .rn = 1,
 617         .entry_count = 200,
 618         .mask_count = 0,
 619         .profile = 0,
 620         .ring_mask = (1 << LPFC_ELS_RING),
 621         .buffer_count = 0,
 622         .init_count = 20,
 623         .add_count = 5,
 624 };
 625
 626 static struct lpfc_hbq_init lpfc_extra_hbq = {
 627         .rn = 1,
 628         .entry_count = 200,
 629         .mask_count = 0,
 630         .profile = 0,
 631         .ring_mask = (1 << LPFC_EXTRA_RING),
 632         .buffer_count = 0,
 633         .init_count = 0,
 634         .add_count = 5,
 635 };
 636
 637 struct lpfc_hbq_init *lpfc_hbq_defs[] = {
 638         &lpfc_els_hbq,
 639         &lpfc_extra_hbq,
 640 };
 641
 642 static int
 643 lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
 644 {
 645         uint32_t i, start, end;
 646         unsigned long flags;
 647         struct hbq_dmabuf *hbq_buffer;
 648
 649         if (!phba->hbqs[hbqno].hbq_alloc_buffer)
 650                 return 0;
 651
 652         start = phba->hbqs[hbqno].buffer_count;
 653         end = count + start;
 654         if (end > lpfc_hbq_defs[hbqno]->entry_count)
 655                 end = lpfc_hbq_defs[hbqno]->entry_count;
 656
 657         /* Check whether HBQ is still in use */
 658         spin_lock_irqsave(&phba->hbalock, flags);
 659         if (!phba->hbq_in_use)
 660                 goto out;
 661
 662         /* Populate HBQ entries */
 663         for (i = start; i < end; i++) {
 664                 hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
 665                 if (!hbq_buffer)
 666                         goto err;
 667                 hbq_buffer->tag = (i | (hbqno << 16));
 668                 if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
 669                         phba->hbqs[hbqno].buffer_count++;
 670                 else
 671                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
 672         }
 673
 674  out:
 675         spin_unlock_irqrestore(&phba->hbalock, flags);
 676         return 0;
 677  err:
 678         spin_unlock_irqrestore(&phba->hbalock, flags);
 679         return 1;
 680 }
 681
 682 int
 683 lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno)
 684 {
 685         return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
 686                                          lpfc_hbq_defs[qno]->add_count));
 687 }
 688
 689 static int
 690 lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
 691 {
 692         return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
 693                                          lpfc_hbq_defs[qno]->init_count));
 694 }
 695
 696 static struct hbq_dmabuf *
 697 lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
 698 {
 699         struct lpfc_dmabuf *d_buf;
 700         struct hbq_dmabuf *hbq_buf;
 701         uint32_t hbqno;
 702
 703         hbqno = tag >> 16;
 704         if (hbqno >= LPFC_MAX_HBQS)
 705                 return NULL;
 706
 707         list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) {
 708                 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
 709                 if (hbq_buf->tag == tag) {
 710                         return hbq_buf;
 711                 }
 712         }
 713         lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT,
 714                         "1803 Bad hbq tag. Data: x%x x%x\n",
 715                         tag, phba->hbqs[tag >> 16].buffer_count);
 716         return NULL;
 717 }
 718
 719 void
 720 lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer)
 721 {
 722         uint32_t hbqno;
 723
 724         if (hbq_buffer) {
 725                 hbqno = hbq_buffer->tag >> 16;
 726                 if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
 727                         (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
 728                 }
 729         }
 730 }
 731
 732 static int
 733 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
 734 {
 735         uint8_t ret;
 736
 737         switch (mbxCommand) {
 738         case MBX_LOAD_SM:
 739         case MBX_READ_NV:
 740         case MBX_WRITE_NV:
 741         case MBX_WRITE_VPARMS:
 742         case MBX_RUN_BIU_DIAG:
 743         case MBX_INIT_LINK:
 744         case MBX_DOWN_LINK:
 745         case MBX_CONFIG_LINK:
 746         case MBX_CONFIG_RING:
 747         case MBX_RESET_RING:
 748         case MBX_READ_CONFIG:
 749         case MBX_READ_RCONFIG:
 750         case MBX_READ_SPARM:
 751         case MBX_READ_STATUS:
 752         case MBX_READ_RPI:
 753         case MBX_READ_XRI:
 754         case MBX_READ_REV:
 755         case MBX_READ_LNK_STAT:
 756         case MBX_REG_LOGIN:
 757         case MBX_UNREG_LOGIN:
 758         case MBX_READ_LA:
 759         case MBX_CLEAR_LA:
 760         case MBX_DUMP_MEMORY:
 761         case MBX_DUMP_CONTEXT:
 762         case MBX_RUN_DIAGS:
 763         case MBX_RESTART:
 764         case MBX_UPDATE_CFG:
 765         case MBX_DOWN_LOAD:
 766         case MBX_DEL_LD_ENTRY:
 767         case MBX_RUN_PROGRAM:
 768         case MBX_SET_MASK:
 769         case MBX_SET_VARIABLE:
 770         case MBX_UNREG_D_ID:
 771         case MBX_KILL_BOARD:
 772         case MBX_CONFIG_FARP:
 773         case MBX_BEACON:
 774         case MBX_LOAD_AREA:
 775         case MBX_RUN_BIU_DIAG64:
 776         case MBX_CONFIG_PORT:
 777         case MBX_READ_SPARM64:
 778         case MBX_READ_RPI64:
 779         case MBX_REG_LOGIN64:
 780         case MBX_READ_LA64:
 781         case MBX_WRITE_WWN:
 782         case MBX_SET_DEBUG:
 783         case MBX_LOAD_EXP_ROM:
 784         case MBX_ASYNCEVT_ENABLE:
 785         case MBX_REG_VPI:
 786         case MBX_UNREG_VPI:
 787         case MBX_HEARTBEAT:
 788                 ret = mbxCommand;
 789                 break;
 790         default:
 791                 ret = MBX_SHUTDOWN;
 792                 break;
 793         }
 794         return ret;
 795 }
 796 static void
 797 lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 798 {
 799         wait_queue_head_t *pdone_q;
 800         unsigned long drvr_flag;
 801
 802         /*
 803          * If pdone_q is empty, the driver thread gave up waiting and
 804          * continued running.
 805          */
 806         pmboxq->mbox_flag |= LPFC_MBX_WAKE;
 807         spin_lock_irqsave(&phba->hbalock, drvr_flag);
 808         pdone_q = (wait_queue_head_t *) pmboxq->context1;
 809         if (pdone_q)
 810                 wake_up_interruptible(pdone_q);
 811         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
 812         return;
 813 }
 814
 815 void
 816 lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
 817 {
 818         struct lpfc_dmabuf *mp;
 819         uint16_t rpi;
 820         int rc;
 821
 822         mp = (struct lpfc_dmabuf *) (pmb->context1);
 823
 824         if (mp) {
 825                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 826                 kfree(mp);
 827         }
 828
 829         /*
 830          * If a REG_LOGIN succeeded  after node is destroyed or node
 831          * is in re-discovery driver need to cleanup the RPI.
 832          */
 833         if (!(phba->pport->load_flag & FC_UNLOADING) &&
 834             pmb->mb.mbxCommand == MBX_REG_LOGIN64 &&
 835             !pmb->mb.mbxStatus) {
 836
 837                 rpi = pmb->mb.un.varWords[0];
 838                 lpfc_unreg_login(phba, pmb->mb.un.varRegLogin.vpi, rpi, pmb);
 839                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 840                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 841                 if (rc != MBX_NOT_FINISHED)
 842                         return;
 843         }
 844
 845         mempool_free(pmb, phba->mbox_mem_pool);
 846         return;
 847 }
 848
 849 int
 850 lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
 851 {
 852         MAILBOX_t *pmbox;
 853         LPFC_MBOXQ_t *pmb;
 854         int rc;
 855         LIST_HEAD(cmplq);
 856
 857         phba->sli.slistat.mbox_event++;
 858
 859         /* Get all completed mailboxe buffers into the cmplq */
 860         spin_lock_irq(&phba->hbalock);
 861         list_splice_init(&phba->sli.mboxq_cmpl, &cmplq);
 862         spin_unlock_irq(&phba->hbalock);
 863
 864         /* Get a Mailbox buffer to setup mailbox commands for callback */
 865         do {
 866                 list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list);
 867                 if (pmb == NULL)
 868                         break;
 869
 870                 pmbox = &pmb->mb;
 871
 872                 if (pmbox->mbxCommand != MBX_HEARTBEAT) {
 873                         if (pmb->vport) {
 874                                 lpfc_debugfs_disc_trc(pmb->vport,
 875                                         LPFC_DISC_TRC_MBOX_VPORT,
 876                                         "MBOX cmpl vport: cmd:x%x mb:x%x x%x",
 877                                         (uint32_t)pmbox->mbxCommand,
 878                                         pmbox->un.varWords[0],
 879                                         pmbox->un.varWords[1]);
 880                         }
 881                         else {
 882                                 lpfc_debugfs_disc_trc(phba->pport,
 883                                         LPFC_DISC_TRC_MBOX,
 884                                         "MBOX cmpl:       cmd:x%x mb:x%x x%x",
 885                                         (uint32_t)pmbox->mbxCommand,
 886                                         pmbox->un.varWords[0],
 887                                         pmbox->un.varWords[1]);
 888                         }
 889                 }
 890
 891                 /*
 892                  * It is a fatal error if unknown mbox command completion.
 893                  */
 894                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
 895                     MBX_SHUTDOWN) {
 896                         /* Unknow mailbox command compl */
 897                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
 898                                         "(%d):0323 Unknown Mailbox command "
 899                                         "%x Cmpl\n",
 900                                         pmb->vport ? pmb->vport->vpi : 0,
 901                                         pmbox->mbxCommand);
 902                         phba->link_state = LPFC_HBA_ERROR;
 903                         phba->work_hs = HS_FFER3;
 904                         lpfc_handle_eratt(phba);
 905                         continue;
 906                 }
 907
 908                 if (pmbox->mbxStatus) {
 909                         phba->sli.slistat.mbox_stat_err++;
 910                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
 911                                 /* Mbox cmd cmpl error - RETRYing */
 912                                 lpfc_printf_log(phba, KERN_INFO,
 913                                                 LOG_MBOX | LOG_SLI,
 914                                                 "(%d):0305 Mbox cmd cmpl "
 915                                                 "error - RETRYing Data: x%x "
 916                                                 "x%x x%x x%x\n",
 917                                                 pmb->vport ? pmb->vport->vpi :0,
 918                                                 pmbox->mbxCommand,
 919                                                 pmbox->mbxStatus,
 920                                                 pmbox->un.varWords[0],
 921                                                 pmb->vport->port_state);
 922                                 pmbox->mbxStatus = 0;
 923                                 pmbox->mbxOwner = OWN_HOST;
 924                                 spin_lock_irq(&phba->hbalock);
 925                                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 926                                 spin_unlock_irq(&phba->hbalock);
 927                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 928                                 if (rc == MBX_SUCCESS)
 929                                         continue;
 930                         }
 931                 }
 932
 933                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
 934                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
 935                                 "(%d):0307 Mailbox cmd x%x Cmpl x%p "
 936                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
 937                                 pmb->vport ? pmb->vport->vpi : 0,
 938                                 pmbox->mbxCommand,
 939                                 pmb->mbox_cmpl,
 940                                 *((uint32_t *) pmbox),
 941                                 pmbox->un.varWords[0],
 942                                 pmbox->un.varWords[1],
 943                                 pmbox->un.varWords[2],
 944                                 pmbox->un.varWords[3],
 945                                 pmbox->un.varWords[4],
 946                                 pmbox->un.varWords[5],
 947                                 pmbox->un.varWords[6],
 948                                 pmbox->un.varWords[7]);
 949
 950                 if (pmb->mbox_cmpl)
 951                         pmb->mbox_cmpl(phba,pmb);
 952         } while (1);
 953         return 0;
 954 }
 955
 956 static struct lpfc_dmabuf *
 957 lpfc_sli_replace_hbqbuff(struct lpfc_hba *phba, uint32_t tag)
 958 {
 959         struct hbq_dmabuf *hbq_entry, *new_hbq_entry;
 960         uint32_t hbqno;
 961         void *virt;             /* virtual address ptr */
 962         dma_addr_t phys;        /* mapped address */
 963         unsigned long flags;
 964
 965         /* Check whether HBQ is still in use */
 966         spin_lock_irqsave(&phba->hbalock, flags);
 967         if (!phba->hbq_in_use) {
 968                 spin_unlock_irqrestore(&phba->hbalock, flags);
 969                 return NULL;
 970         }
 971
 972         hbq_entry = lpfc_sli_hbqbuf_find(phba, tag);
 973         if (hbq_entry == NULL) {
 974                 spin_unlock_irqrestore(&phba->hbalock, flags);
 975                 return NULL;
 976         }
 977         list_del(&hbq_entry->dbuf.list);
 978
 979         hbqno = tag >> 16;
 980         new_hbq_entry = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
 981         if (new_hbq_entry == NULL) {
 982                 list_add_tail(&hbq_entry->dbuf.list, &phba->hbqbuf_in_list);
 983                 spin_unlock_irqrestore(&phba->hbalock, flags);
 984                 return &hbq_entry->dbuf;
 985         }
 986         new_hbq_entry->tag = -1;
 987         phys = new_hbq_entry->dbuf.phys;
 988         virt = new_hbq_entry->dbuf.virt;
 989         new_hbq_entry->dbuf.phys = hbq_entry->dbuf.phys;
 990         new_hbq_entry->dbuf.virt = hbq_entry->dbuf.virt;
 991         hbq_entry->dbuf.phys = phys;
 992         hbq_entry->dbuf.virt = virt;
 993         lpfc_sli_free_hbq(phba, hbq_entry);
 994         list_add_tail(&new_hbq_entry->dbuf.list, &phba->hbqbuf_in_list);
 995         spin_unlock_irqrestore(&phba->hbalock, flags);
 996
 997         return &new_hbq_entry->dbuf;
 998 }
 999
1000 static struct lpfc_dmabuf *
1001 lpfc_sli_get_buff(struct lpfc_hba *phba,
1002                         struct lpfc_sli_ring *pring,
1003                         uint32_t tag)
1004 {
1005         if (tag & QUE_BUFTAG_BIT)
1006                 return lpfc_sli_ring_taggedbuf_get(phba, pring, tag);
1007         else
1008                 return lpfc_sli_replace_hbqbuff(phba, tag);
1009 }
1010
1011 static int
1012 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1013                             struct lpfc_iocbq *saveq)
1014 {
1015         IOCB_t           * irsp;
1016         WORD5            * w5p;
1017         uint32_t           Rctl, Type;
1018         uint32_t           match, i;
1019         struct lpfc_iocbq *iocbq;
1020         struct lpfc_dmabuf *dmzbuf;
1021
1022         match = 0;
1023         irsp = &(saveq->iocb);
1024
1025         if (irsp->ulpStatus == IOSTAT_NEED_BUFFER)
1026                 return 1;
1027         if (irsp->ulpCommand == CMD_ASYNC_STATUS) {
1028                 if (pring->lpfc_sli_rcv_async_status)
1029                         pring->lpfc_sli_rcv_async_status(phba, pring, saveq);
1030                 else
1031                         lpfc_printf_log(phba,
1032                                         KERN_WARNING,
1033                                         LOG_SLI,
1034                                         "0316 Ring %d handler: unexpected "
1035                                         "ASYNC_STATUS iocb received evt_code "
1036                                         "0x%x\n",
1037                                         pring->ringno,
1038                                         irsp->un.asyncstat.evt_code);
1039                 return 1;
1040         }
1041
1042         if ((irsp->ulpCommand == CMD_IOCB_RET_XRI64_CX) &&
1043                 (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) {
1044                 if (irsp->ulpBdeCount > 0) {
1045                         dmzbuf = lpfc_sli_get_buff(phba, pring,
1046                                         irsp->un.ulpWord[3]);
1047                         lpfc_in_buf_free(phba, dmzbuf);
1048                 }
1049
1050                 if (irsp->ulpBdeCount > 1) {
1051                         dmzbuf = lpfc_sli_get_buff(phba, pring,
1052                                         irsp->unsli3.sli3Words[3]);
1053                         lpfc_in_buf_free(phba, dmzbuf);
1054                 }
1055
1056                 if (irsp->ulpBdeCount > 2) {
1057                         dmzbuf = lpfc_sli_get_buff(phba, pring,
1058                                 irsp->unsli3.sli3Words[7]);
1059                         lpfc_in_buf_free(phba, dmzbuf);
1060                 }
1061
1062                 return 1;
1063         }
1064
1065         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
1066                 if (irsp->ulpBdeCount != 0) {
1067                         saveq->context2 = lpfc_sli_get_buff(phba, pring,
1068                                                 irsp->un.ulpWord[3]);
1069                         if (!saveq->context2)
1070                                 lpfc_printf_log(phba,
1071                                         KERN_ERR,
1072                                         LOG_SLI,
1073                                         "0341 Ring %d Cannot find buffer for "
1074                                         "an unsolicited iocb. tag 0x%x\n",
1075                                         pring->ringno,
1076                                         irsp->un.ulpWord[3]);
1077                 }
1078                 if (irsp->ulpBdeCount == 2) {
1079                         saveq->context3 = lpfc_sli_get_buff(phba, pring,
1080                                                 irsp->unsli3.sli3Words[7]);
1081                         if (!saveq->context3)
1082                                 lpfc_printf_log(phba,
1083                                         KERN_ERR,
1084                                         LOG_SLI,
1085                                         "0342 Ring %d Cannot find buffer for an"
1086                                         " unsolicited iocb. tag 0x%x\n",
1087                                         pring->ringno,
1088                                         irsp->unsli3.sli3Words[7]);
1089                 }
1090                 list_for_each_entry(iocbq, &saveq->list, list) {
1091                         irsp = &(iocbq->iocb);
1092                         if (irsp->ulpBdeCount != 0) {
1093                                 iocbq->context2 = lpfc_sli_get_buff(phba, pring,
1094                                                         irsp->un.ulpWord[3]);
1095                                 if (!iocbq->context2)
1096                                         lpfc_printf_log(phba,
1097                                                 KERN_ERR,
1098                                                 LOG_SLI,
1099                                                 "0343 Ring %d Cannot find "
1100                                                 "buffer for an unsolicited iocb"
1101                                                 ". tag 0x%x\n", pring->ringno,
1102                                                 irsp->un.ulpWord[3]);
1103                         }
1104                         if (irsp->ulpBdeCount == 2) {
1105                                 iocbq->context3 = lpfc_sli_get_buff(phba, pring,
1106                                                 irsp->unsli3.sli3Words[7]);
1107                                 if (!iocbq->context3)
1108                                         lpfc_printf_log(phba,
1109                                                 KERN_ERR,
1110                                                 LOG_SLI,
1111                                                 "0344 Ring %d Cannot find "
1112                                                 "buffer for an unsolicited "
1113                                                 "iocb. tag 0x%x\n",
1114                                                 pring->ringno,
1115                                                 irsp->unsli3.sli3Words[7]);
1116                         }
1117                 }
1118         }
1119         if (irsp->ulpBdeCount != 0 &&
1120             (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX ||
1121              irsp->ulpStatus == IOSTAT_INTERMED_RSP)) {
1122                 int found = 0;
1123
1124                 /* search continue save q for same XRI */
1125                 list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) {
1126                         if (iocbq->iocb.ulpContext == saveq->iocb.ulpContext) {
1127                                 list_add_tail(&saveq->list, &iocbq->list);
1128                                 found = 1;
1129                                 break;
1130                         }
1131                 }
1132                 if (!found)
1133                         list_add_tail(&saveq->clist,
1134                                       &pring->iocb_continue_saveq);
1135                 if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) {
1136                         list_del_init(&iocbq->clist);
1137                         saveq = iocbq;
1138                         irsp = &(saveq->iocb);
1139                 } else
1140                         return 0;
1141         }
1142         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) ||
1143             (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) ||
1144             (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) {
1145                 Rctl = FC_ELS_REQ;
1146                 Type = FC_ELS_DATA;
1147         } else {
1148                 w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]);
1149                 Rctl = w5p->hcsw.Rctl;
1150                 Type = w5p->hcsw.Type;
1151
1152                 /* Firmware Workaround */
1153                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
1154                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX ||
1155                          irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
1156                         Rctl = FC_ELS_REQ;
1157                         Type = FC_ELS_DATA;
1158                         w5p->hcsw.Rctl = Rctl;
1159                         w5p->hcsw.Type = Type;
1160                 }
1161         }
1162
1163         /* unSolicited Responses */
1164         if (pring->prt[0].profile) {
1165                 if (pring->prt[0].lpfc_sli_rcv_unsol_event)
1166                         (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
1167                                                                         saveq);
1168                 match = 1;
1169         } else {
1170                 /* We must search, based on rctl / type
1171                    for the right routine */
1172                 for (i = 0; i < pring->num_mask; i++) {
1173                         if ((pring->prt[i].rctl == Rctl)
1174                             && (pring->prt[i].type == Type)) {
1175                                 if (pring->prt[i].lpfc_sli_rcv_unsol_event)
1176                                         (pring->prt[i].lpfc_sli_rcv_unsol_event)
1177                                                         (phba, pring, saveq);
1178                                 match = 1;
1179                                 break;
1180                         }
1181                 }
1182         }
1183         if (match == 0) {
1184                 /* Unexpected Rctl / Type received */
1185                 /* Ring <ringno> handler: unexpected
1186                    Rctl <Rctl> Type <Type> received */
1187                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1188                                 "0313 Ring %d handler: unexpected Rctl x%x "
1189                                 "Type x%x received\n",
1190                                 pring->ringno, Rctl, Type);
1191         }
1192         return 1;
1193 }
1194
1195 static struct lpfc_iocbq *
1196 lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
1197                       struct lpfc_sli_ring *pring,
1198                       struct lpfc_iocbq *prspiocb)
1199 {
1200         struct lpfc_iocbq *cmd_iocb = NULL;
1201         uint16_t iotag;
1202
1203         iotag = prspiocb->iocb.ulpIoTag;
1204
1205         if (iotag != 0 && iotag <= phba->sli.last_iotag) {
1206                 cmd_iocb = phba->sli.iocbq_lookup[iotag];
1207                 list_del_init(&cmd_iocb->list);
1208                 pring->txcmplq_cnt--;
1209                 return cmd_iocb;
1210         }
1211
1212         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1213                         "0317 iotag x%x is out off "
1214                         "range: max iotag x%x wd0 x%x\n",
1215                         iotag, phba->sli.last_iotag,
1216                         *(((uint32_t *) &prspiocb->iocb) + 7));
1217         return NULL;
1218 }
1219
1220 static int
1221 lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1222                           struct lpfc_iocbq *saveq)
1223 {
1224         struct lpfc_iocbq *cmdiocbp;
1225         int rc = 1;
1226         unsigned long iflag;
1227
1228         /* Based on the iotag field, get the cmd IOCB from the txcmplq */
1229         spin_lock_irqsave(&phba->hbalock, iflag);
1230         cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
1231         spin_unlock_irqrestore(&phba->hbalock, iflag);
1232
1233         if (cmdiocbp) {
1234                 if (cmdiocbp->iocb_cmpl) {
1235                         /*
1236                          * Post all ELS completions to the worker thread.
1237                          * All other are passed to the completion callback.
1238                          */
1239                         if (pring->ringno == LPFC_ELS_RING) {
1240                                 if (cmdiocbp->iocb_flag & LPFC_DRIVER_ABORTED) {
1241                                         cmdiocbp->iocb_flag &=
1242                                                 ~LPFC_DRIVER_ABORTED;
1243                                         saveq->iocb.ulpStatus =
1244                                                 IOSTAT_LOCAL_REJECT;
1245                                         saveq->iocb.un.ulpWord[4] =
1246                                                 IOERR_SLI_ABORTED;
1247
1248                                         /* Firmware could still be in progress
1249                                          * of DMAing payload, so don't free data
1250                                          * buffer till after a hbeat.
1251                                          */
1252                                         saveq->iocb_flag |= LPFC_DELAY_MEM_FREE;
1253                                 }
1254                         }
1255                         (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
1256                 } else
1257                         lpfc_sli_release_iocbq(phba, cmdiocbp);
1258         } else {
1259                 /*
1260                  * Unknown initiating command based on the response iotag.
1261                  * This could be the case on the ELS ring because of
1262                  * lpfc_els_abort().
1263                  */
1264                 if (pring->ringno != LPFC_ELS_RING) {
1265                         /*
1266                          * Ring <ringno> handler: unexpected completion IoTag
1267                          * <IoTag>
1268                          */
1269                         lpfc_printf_vlog(cmdiocbp->vport, KERN_WARNING, LOG_SLI,
1270                                          "0322 Ring %d handler: "
1271                                          "unexpected completion IoTag x%x "
1272                                          "Data: x%x x%x x%x x%x\n",
1273                                          pring->ringno,
1274                                          saveq->iocb.ulpIoTag,
1275                                          saveq->iocb.ulpStatus,
1276                                          saveq->iocb.un.ulpWord[4],
1277                                          saveq->iocb.ulpCommand,
1278                                          saveq->iocb.ulpContext);
1279                 }
1280         }
1281
1282         return rc;
1283 }
1284
1285 static void
1286 lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1287 {
1288         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1289                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1290                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1291         /*
1292          * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1293          * rsp ring <portRspMax>
1294          */
1295         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1296                         "0312 Ring %d handler: portRspPut %d "
1297                         "is bigger then rsp ring %d\n",
1298                         pring->ringno, le32_to_cpu(pgp->rspPutInx),
1299                         pring->numRiocb);
1300
1301         phba->link_state = LPFC_HBA_ERROR;
1302
1303         /*
1304          * All error attention handlers are posted to
1305          * worker thread
1306          */
1307         phba->work_ha |= HA_ERATT;
1308         phba->work_hs = HS_FFER3;
1309
1310         lpfc_worker_wake_up(phba);
1311
1312         return;
1313 }
1314
1315 void lpfc_sli_poll_fcp_ring(struct lpfc_hba *phba)
1316 {
1317         struct lpfc_sli      *psli  = &phba->sli;
1318         struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
1319         IOCB_t *irsp = NULL;
1320         IOCB_t *entry = NULL;
1321         struct lpfc_iocbq *cmdiocbq = NULL;
1322         struct lpfc_iocbq rspiocbq;
1323         struct lpfc_pgp *pgp;
1324         uint32_t status;
1325         uint32_t portRspPut, portRspMax;
1326         int type;
1327         uint32_t rsp_cmpl = 0;
1328         uint32_t ha_copy;
1329         unsigned long iflags;
1330
1331         pring->stats.iocb_event++;
1332
1333         pgp = (phba->sli_rev == 3) ?
1334                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1335                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1336
1337
1338         /*
1339          * The next available response entry should never exceed the maximum
1340          * entries.  If it does, treat it as an adapter hardware error.
1341          */
1342         portRspMax = pring->numRiocb;
1343         portRspPut = le32_to_cpu(pgp->rspPutInx);
1344         if (unlikely(portRspPut >= portRspMax)) {
1345                 lpfc_sli_rsp_pointers_error(phba, pring);
1346                 return;
1347         }
1348
1349         rmb();
1350         while (pring->rspidx != portRspPut) {
1351                 entry = lpfc_resp_iocb(phba, pring);
1352                 if (++pring->rspidx >= portRspMax)
1353                         pring->rspidx = 0;
1354
1355                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1356                                       (uint32_t *) &rspiocbq.iocb,
1357                                       phba->iocb_rsp_size);
1358                 irsp = &rspiocbq.iocb;
1359                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1360                 pring->stats.iocb_rsp++;
1361                 rsp_cmpl++;
1362
1363                 if (unlikely(irsp->ulpStatus)) {
1364                         /* Rsp ring <ringno> error: IOCB */
1365                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1366                                         "0326 Rsp Ring %d error: IOCB Data: "
1367                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1368                                         pring->ringno,
1369                                         irsp->un.ulpWord[0],
1370                                         irsp->un.ulpWord[1],
1371                                         irsp->un.ulpWord[2],
1372                                         irsp->un.ulpWord[3],
1373                                         irsp->un.ulpWord[4],
1374                                         irsp->un.ulpWord[5],
1375                                         *(((uint32_t *) irsp) + 6),
1376                                         *(((uint32_t *) irsp) + 7));
1377                 }
1378
1379                 switch (type) {
1380                 case LPFC_ABORT_IOCB:
1381                 case LPFC_SOL_IOCB:
1382                         /*
1383                          * Idle exchange closed via ABTS from port.  No iocb
1384                          * resources need to be recovered.
1385                          */
1386                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1387                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1388                                                 "0314 IOCB cmd 0x%x "
1389                                                 "processed. Skipping "
1390                                                 "completion",
1391                                                 irsp->ulpCommand);
1392                                 break;
1393                         }
1394
1395                         spin_lock_irqsave(&phba->hbalock, iflags);
1396                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1397                                                          &rspiocbq);
1398                         spin_unlock_irqrestore(&phba->hbalock, iflags);
1399                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1400                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1401                                                       &rspiocbq);
1402                         }
1403                         break;
1404                 default:
1405                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1406                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1407                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1408                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1409                                        MAX_MSG_DATA);
1410                                 dev_warn(&((phba->pcidev)->dev),
1411                                          "lpfc%d: %s\n",
1412                                          phba->brd_no, adaptermsg);
1413                         } else {
1414                                 /* Unknown IOCB command */
1415                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1416                                                 "0321 Unknown IOCB command "
1417                                                 "Data: x%x, x%x x%x x%x x%x\n",
1418                                                 type, irsp->ulpCommand,
1419                                                 irsp->ulpStatus,
1420                                                 irsp->ulpIoTag,
1421                                                 irsp->ulpContext);
1422                         }
1423                         break;
1424                 }
1425
1426                 /*
1427                  * The response IOCB has been processed.  Update the ring
1428                  * pointer in SLIM.  If the port response put pointer has not
1429                  * been updated, sync the pgp->rspPutInx and fetch the new port
1430                  * response put pointer.
1431                  */
1432                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1433
1434                 if (pring->rspidx == portRspPut)
1435                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1436         }
1437
1438         ha_copy = readl(phba->HAregaddr);
1439         ha_copy >>= (LPFC_FCP_RING * 4);
1440
1441         if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
1442                 spin_lock_irqsave(&phba->hbalock, iflags);
1443                 pring->stats.iocb_rsp_full++;
1444                 status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
1445                 writel(status, phba->CAregaddr);
1446                 readl(phba->CAregaddr);
1447                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1448         }
1449         if ((ha_copy & HA_R0CE_RSP) &&
1450             (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1451                 spin_lock_irqsave(&phba->hbalock, iflags);
1452                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1453                 pring->stats.iocb_cmd_empty++;
1454
1455                 /* Force update of the local copy of cmdGetInx */
1456                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1457                 lpfc_sli_resume_iocb(phba, pring);
1458
1459                 if ((pring->lpfc_sli_cmd_available))
1460                         (pring->lpfc_sli_cmd_available) (phba, pring);
1461
1462                 spin_unlock_irqrestore(&phba->hbalock, iflags);
1463         }
1464
1465         return;
1466 }
1467
1468 /*
1469  * This routine presumes LPFC_FCP_RING handling and doesn't bother
1470  * to check it explicitly.
1471  */
1472 static int
1473 lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
1474                                 struct lpfc_sli_ring *pring, uint32_t mask)
1475 {
1476         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1477                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1478                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1479         IOCB_t *irsp = NULL;
1480         IOCB_t *entry = NULL;
1481         struct lpfc_iocbq *cmdiocbq = NULL;
1482         struct lpfc_iocbq rspiocbq;
1483         uint32_t status;
1484         uint32_t portRspPut, portRspMax;
1485         int rc = 1;
1486         lpfc_iocb_type type;
1487         unsigned long iflag;
1488         uint32_t rsp_cmpl = 0;
1489
1490         spin_lock_irqsave(&phba->hbalock, iflag);
1491         pring->stats.iocb_event++;
1492
1493         /*
1494          * The next available response entry should never exceed the maximum
1495          * entries.  If it does, treat it as an adapter hardware error.
1496          */
1497         portRspMax = pring->numRiocb;
1498         portRspPut = le32_to_cpu(pgp->rspPutInx);
1499         if (unlikely(portRspPut >= portRspMax)) {
1500                 lpfc_sli_rsp_pointers_error(phba, pring);
1501                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1502                 return 1;
1503         }
1504
1505         rmb();
1506         while (pring->rspidx != portRspPut) {
1507                 /*
1508                  * Fetch an entry off the ring and copy it into a local data
1509                  * structure.  The copy involves a byte-swap since the
1510                  * network byte order and pci byte orders are different.
1511                  */
1512                 entry = lpfc_resp_iocb(phba, pring);
1513                 phba->last_completion_time = jiffies;
1514
1515                 if (++pring->rspidx >= portRspMax)
1516                         pring->rspidx = 0;
1517
1518                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1519                                       (uint32_t *) &rspiocbq.iocb,
1520                                       phba->iocb_rsp_size);
1521                 INIT_LIST_HEAD(&(rspiocbq.list));
1522                 irsp = &rspiocbq.iocb;
1523
1524                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1525                 pring->stats.iocb_rsp++;
1526                 rsp_cmpl++;
1527
1528                 if (unlikely(irsp->ulpStatus)) {
1529                         /*
1530                          * If resource errors reported from HBA, reduce
1531                          * queuedepths of the SCSI device.
1532                          */
1533                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1534                                 (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
1535                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1536                                 lpfc_adjust_queue_depth(phba);
1537                                 spin_lock_irqsave(&phba->hbalock, iflag);
1538                         }
1539
1540                         /* Rsp ring <ringno> error: IOCB */
1541                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1542                                         "0336 Rsp Ring %d error: IOCB Data: "
1543                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1544                                         pring->ringno,
1545                                         irsp->un.ulpWord[0],
1546                                         irsp->un.ulpWord[1],
1547                                         irsp->un.ulpWord[2],
1548                                         irsp->un.ulpWord[3],
1549                                         irsp->un.ulpWord[4],
1550                                         irsp->un.ulpWord[5],
1551                                         *(((uint32_t *) irsp) + 6),
1552                                         *(((uint32_t *) irsp) + 7));
1553                 }
1554
1555                 switch (type) {
1556                 case LPFC_ABORT_IOCB:
1557                 case LPFC_SOL_IOCB:
1558                         /*
1559                          * Idle exchange closed via ABTS from port.  No iocb
1560                          * resources need to be recovered.
1561                          */
1562                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1563                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1564                                                 "0333 IOCB cmd 0x%x"
1565                                                 " processed. Skipping"
1566                                                 " completion\n",
1567                                                 irsp->ulpCommand);
1568                                 break;
1569                         }
1570
1571                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1572                                                          &rspiocbq);
1573                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1574                                 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
1575                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1576                                                               &rspiocbq);
1577                                 } else {
1578                                         spin_unlock_irqrestore(&phba->hbalock,
1579                                                                iflag);
1580                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1581                                                               &rspiocbq);
1582                                         spin_lock_irqsave(&phba->hbalock,
1583                                                           iflag);
1584                                 }
1585                         }
1586                         break;
1587                 case LPFC_UNSOL_IOCB:
1588                         spin_unlock_irqrestore(&phba->hbalock, iflag);
1589                         lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
1590                         spin_lock_irqsave(&phba->hbalock, iflag);
1591                         break;
1592                 default:
1593                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1594                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1595                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1596                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1597                                        MAX_MSG_DATA);
1598                                 dev_warn(&((phba->pcidev)->dev),
1599                                          "lpfc%d: %s\n",
1600                                          phba->brd_no, adaptermsg);
1601                         } else {
1602                                 /* Unknown IOCB command */
1603                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1604                                                 "0334 Unknown IOCB command "
1605                                                 "Data: x%x, x%x x%x x%x x%x\n",
1606                                                 type, irsp->ulpCommand,
1607                                                 irsp->ulpStatus,
1608                                                 irsp->ulpIoTag,
1609                                                 irsp->ulpContext);
1610                         }
1611                         break;
1612                 }
1613
1614                 /*
1615                  * The response IOCB has been processed.  Update the ring
1616                  * pointer in SLIM.  If the port response put pointer has not
1617                  * been updated, sync the pgp->rspPutInx and fetch the new port
1618                  * response put pointer.
1619                  */
1620                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1621
1622                 if (pring->rspidx == portRspPut)
1623                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1624         }
1625
1626         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1627                 pring->stats.iocb_rsp_full++;
1628                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1629                 writel(status, phba->CAregaddr);
1630                 readl(phba->CAregaddr);
1631         }
1632         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1633                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1634                 pring->stats.iocb_cmd_empty++;
1635
1636                 /* Force update of the local copy of cmdGetInx */
1637                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1638                 lpfc_sli_resume_iocb(phba, pring);
1639
1640                 if ((pring->lpfc_sli_cmd_available))
1641                         (pring->lpfc_sli_cmd_available) (phba, pring);
1642
1643         }
1644
1645         spin_unlock_irqrestore(&phba->hbalock, iflag);
1646         return rc;
1647 }
1648
1649 int
1650 lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
1651                                 struct lpfc_sli_ring *pring, uint32_t mask)
1652 {
1653         struct lpfc_pgp *pgp = (phba->sli_rev == 3) ?
1654                 &phba->slim2p->mbx.us.s3_pgp.port[pring->ringno] :
1655                 &phba->slim2p->mbx.us.s2.port[pring->ringno];
1656         IOCB_t *entry;
1657         IOCB_t *irsp = NULL;
1658         struct lpfc_iocbq *rspiocbp = NULL;
1659         struct lpfc_iocbq *next_iocb;
1660         struct lpfc_iocbq *cmdiocbp;
1661         struct lpfc_iocbq *saveq;
1662         uint8_t iocb_cmd_type;
1663         lpfc_iocb_type type;
1664         uint32_t status, free_saveq;
1665         uint32_t portRspPut, portRspMax;
1666         int rc = 1;
1667         unsigned long iflag;
1668
1669         spin_lock_irqsave(&phba->hbalock, iflag);
1670         pring->stats.iocb_event++;
1671
1672         /*
1673          * The next available response entry should never exceed the maximum
1674          * entries.  If it does, treat it as an adapter hardware error.
1675          */
1676         portRspMax = pring->numRiocb;
1677         portRspPut = le32_to_cpu(pgp->rspPutInx);
1678         if (portRspPut >= portRspMax) {
1679                 /*
1680                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1681                  * rsp ring <portRspMax>
1682                  */
1683                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1684                                 "0303 Ring %d handler: portRspPut %d "
1685                                 "is bigger then rsp ring %d\n",
1686                                 pring->ringno, portRspPut, portRspMax);
1687
1688                 phba->link_state = LPFC_HBA_ERROR;
1689                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1690
1691                 phba->work_hs = HS_FFER3;
1692                 lpfc_handle_eratt(phba);
1693
1694                 return 1;
1695         }
1696
1697         rmb();
1698         while (pring->rspidx != portRspPut) {
1699                 /*
1700                  * Build a completion list and call the appropriate handler.
1701                  * The process is to get the next available response iocb, get
1702                  * a free iocb from the list, copy the response data into the
1703                  * free iocb, insert to the continuation list, and update the
1704                  * next response index to slim.  This process makes response
1705                  * iocb's in the ring available to DMA as fast as possible but
1706                  * pays a penalty for a copy operation.  Since the iocb is
1707                  * only 32 bytes, this penalty is considered small relative to
1708                  * the PCI reads for register values and a slim write.  When
1709                  * the ulpLe field is set, the entire Command has been
1710                  * received.
1711                  */
1712                 entry = lpfc_resp_iocb(phba, pring);
1713
1714                 phba->last_completion_time = jiffies;
1715                 rspiocbp = __lpfc_sli_get_iocbq(phba);
1716                 if (rspiocbp == NULL) {
1717                         printk(KERN_ERR "%s: out of buffers! Failing "
1718                                "completion.\n", __func__);
1719                         break;
1720                 }
1721
1722                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb,
1723                                       phba->iocb_rsp_size);
1724                 irsp = &rspiocbp->iocb;
1725
1726                 if (++pring->rspidx >= portRspMax)
1727                         pring->rspidx = 0;
1728
1729                 if (pring->ringno == LPFC_ELS_RING) {
1730                         lpfc_debugfs_slow_ring_trc(phba,
1731                         "IOCB rsp ring:   wd4:x%08x wd6:x%08x wd7:x%08x",
1732                                 *(((uint32_t *) irsp) + 4),
1733                                 *(((uint32_t *) irsp) + 6),
1734                                 *(((uint32_t *) irsp) + 7));
1735                 }
1736
1737                 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
1738
1739                 list_add_tail(&rspiocbp->list, &(pring->iocb_continueq));
1740
1741                 pring->iocb_continueq_cnt++;
1742                 if (irsp->ulpLe) {
1743                         /*
1744                          * By default, the driver expects to free all resources
1745                          * associated with this iocb completion.
1746                          */
1747                         free_saveq = 1;
1748                         saveq = list_get_first(&pring->iocb_continueq,
1749                                                struct lpfc_iocbq, list);
1750                         irsp = &(saveq->iocb);
1751                         list_del_init(&pring->iocb_continueq);
1752                         pring->iocb_continueq_cnt = 0;
1753
1754                         pring->stats.iocb_rsp++;
1755
1756                         /*
1757                          * If resource errors reported from HBA, reduce
1758                          * queuedepths of the SCSI device.
1759                          */
1760                         if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
1761                              (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
1762                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1763                                 lpfc_adjust_queue_depth(phba);
1764                                 spin_lock_irqsave(&phba->hbalock, iflag);
1765                         }
1766
1767                         if (irsp->ulpStatus) {
1768                                 /* Rsp ring <ringno> error: IOCB */
1769                                 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1770                                                 "0328 Rsp Ring %d error: "
1771                                                 "IOCB Data: "
1772                                                 "x%x x%x x%x x%x "
1773                                                 "x%x x%x x%x x%x "
1774                                                 "x%x x%x x%x x%x "
1775                                                 "x%x x%x x%x x%x\n",
1776                                                 pring->ringno,
1777                                                 irsp->un.ulpWord[0],
1778                                                 irsp->un.ulpWord[1],
1779                                                 irsp->un.ulpWord[2],
1780                                                 irsp->un.ulpWord[3],
1781                                                 irsp->un.ulpWord[4],
1782                                                 irsp->un.ulpWord[5],
1783                                                 *(((uint32_t *) irsp) + 6),
1784                                                 *(((uint32_t *) irsp) + 7),
1785                                                 *(((uint32_t *) irsp) + 8),
1786                                                 *(((uint32_t *) irsp) + 9),
1787                                                 *(((uint32_t *) irsp) + 10),
1788                                                 *(((uint32_t *) irsp) + 11),
1789                                                 *(((uint32_t *) irsp) + 12),
1790                                                 *(((uint32_t *) irsp) + 13),
1791                                                 *(((uint32_t *) irsp) + 14),
1792                                                 *(((uint32_t *) irsp) + 15));
1793                         }
1794
1795                         /*
1796                          * Fetch the IOCB command type and call the correct
1797                          * completion routine.  Solicited and Unsolicited
1798                          * IOCBs on the ELS ring get freed back to the
1799                          * lpfc_iocb_list by the discovery kernel thread.
1800                          */
1801                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1802                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1803                         if (type == LPFC_SOL_IOCB) {
1804                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1805                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1806                                                                saveq);
1807                                 spin_lock_irqsave(&phba->hbalock, iflag);
1808                         } else if (type == LPFC_UNSOL_IOCB) {
1809                                 spin_unlock_irqrestore(&phba->hbalock, iflag);
1810                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1811                                                                  saveq);
1812                                 spin_lock_irqsave(&phba->hbalock, iflag);
1813                                 if (!rc)
1814                                         free_saveq = 0;
1815                         } else if (type == LPFC_ABORT_IOCB) {
1816                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1817                                     ((cmdiocbp =
1818                                       lpfc_sli_iocbq_lookup(phba, pring,
1819                                                             saveq)))) {
1820                                         /* Call the specified completion
1821                                            routine */
1822                                         if (cmdiocbp->iocb_cmpl) {
1823                                                 spin_unlock_irqrestore(
1824                                                        &phba->hbalock,
1825                                                        iflag);
1826                                                 (cmdiocbp->iocb_cmpl) (phba,
1827                                                              cmdiocbp, saveq);
1828                                                 spin_lock_irqsave(
1829                                                           &phba->hbalock,
1830                                                           iflag);
1831                                         } else
1832                                                 __lpfc_sli_release_iocbq(phba,
1833                                                                       cmdiocbp);
1834                                 }
1835                         } else if (type == LPFC_UNKNOWN_IOCB) {
1836                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1837
1838                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1839
1840                                         memset(adaptermsg, 0,
1841                                                LPFC_MAX_ADPTMSG);
1842                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1843                                                MAX_MSG_DATA);
1844                                         dev_warn(&((phba->pcidev)->dev),
1845                                                  "lpfc%d: %s\n",
1846                                                  phba->brd_no, adaptermsg);
1847                                 } else {
1848                                         /* Unknown IOCB command */
1849                                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1850                                                         "0335 Unknown IOCB "
1851                                                         "command Data: x%x "
1852                                                         "x%x x%x x%x\n",
1853                                                         irsp->ulpCommand,
1854                                                         irsp->ulpStatus,
1855                                                         irsp->ulpIoTag,
1856                                                         irsp->ulpContext);
1857                                 }
1858                         }
1859
1860                         if (free_saveq) {
1861                                 list_for_each_entry_safe(rspiocbp, next_iocb,
1862                                                          &saveq->list, list) {
1863                                         list_del(&rspiocbp->list);
1864                                         __lpfc_sli_release_iocbq(phba,
1865                                                                  rspiocbp);
1866                                 }
1867                                 __lpfc_sli_release_iocbq(phba, saveq);
1868                         }
1869                         rspiocbp = NULL;
1870                 }
1871
1872                 /*
1873                  * If the port response put pointer has not been updated, sync
1874                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1875                  * response put pointer.
1876                  */
1877                 if (pring->rspidx == portRspPut) {
1878                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1879                 }
1880         } /* while (pring->rspidx != portRspPut) */
1881
1882         if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) {
1883                 /* At least one response entry has been freed */
1884                 pring->stats.iocb_rsp_full++;
1885                 /* SET RxRE_RSP in Chip Att register */
1886                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1887                 writel(status, phba->CAregaddr);
1888                 readl(phba->CAregaddr); /* flush */
1889         }
1890         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1891                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1892                 pring->stats.iocb_cmd_empty++;
1893
1894                 /* Force update of the local copy of cmdGetInx */
1895                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1896                 lpfc_sli_resume_iocb(phba, pring);
1897
1898                 if ((pring->lpfc_sli_cmd_available))
1899                         (pring->lpfc_sli_cmd_available) (phba, pring);
1900
1901         }
1902
1903         spin_unlock_irqrestore(&phba->hbalock, iflag);
1904         return rc;
1905 }
1906
1907 void
1908 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1909 {
1910         LIST_HEAD(completions);
1911         struct lpfc_iocbq *iocb, *next_iocb;
1912         IOCB_t *cmd = NULL;
1913
1914         if (pring->ringno == LPFC_ELS_RING) {
1915                 lpfc_fabric_abort_hba(phba);
1916         }
1917
1918         /* Error everything on txq and txcmplq
1919          * First do the txq.
1920          */
1921         spin_lock_irq(&phba->hbalock);
1922         list_splice_init(&pring->txq, &completions);
1923         pring->txq_cnt = 0;
1924
1925         /* Next issue ABTS for everything on the txcmplq */
1926         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list)
1927                 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
1928
1929         spin_unlock_irq(&phba->hbalock);
1930
1931         while (!list_empty(&completions)) {
1932                 iocb = list_get_first(&completions, struct lpfc_iocbq, list);
1933                 cmd = &iocb->iocb;
1934                 list_del_init(&iocb->list);
1935
1936                 if (!iocb->iocb_cmpl)
1937                         lpfc_sli_release_iocbq(phba, iocb);
1938                 else {
1939                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1940                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1941                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1942                 }
1943         }
1944 }
1945
1946 int
1947 lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
1948 {
1949         uint32_t status;
1950         int i = 0;
1951         int retval = 0;
1952
1953         /* Read the HBA Host Status Register */
1954         status = readl(phba->HSregaddr);
1955
1956         /*
1957          * Check status register every 100ms for 5 retries, then every
1958          * 500ms for 5, then every 2.5 sec for 5, then reset board and
1959          * every 2.5 sec for 4.
1960          * Break our of the loop if errors occurred during init.
1961          */
1962         while (((status & mask) != mask) &&
1963                !(status & HS_FFERM) &&
1964                i++ < 20) {
1965
1966                 if (i <= 5)
1967                         msleep(10);
1968                 else if (i <= 10)
1969                         msleep(500);
1970                 else
1971                         msleep(2500);
1972
1973                 if (i == 15) {
1974                                 /* Do post */
1975                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
1976                         lpfc_sli_brdrestart(phba);
1977                 }
1978                 /* Read the HBA Host Status Register */
1979                 status = readl(phba->HSregaddr);
1980         }
1981
1982         /* Check to see if any errors occurred during init */
1983         if ((status & HS_FFERM) || (i >= 20)) {
1984                 phba->link_state = LPFC_HBA_ERROR;
1985                 retval = 1;
1986         }
1987
1988         return retval;
1989 }
1990
1991 #define BARRIER_TEST_PATTERN (0xdeadbeef)
1992
1993 void lpfc_reset_barrier(struct lpfc_hba *phba)
1994 {
1995         uint32_t __iomem *resp_buf;
1996         uint32_t __iomem *mbox_buf;
1997         volatile uint32_t mbox;
1998         uint32_t hc_copy;
1999         int  i;
2000         uint8_t hdrtype;
2001
2002         pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
2003         if (hdrtype != 0x80 ||
2004             (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
2005              FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
2006                 return;
2007
2008         /*
2009          * Tell the other part of the chip to suspend temporarily all
2010          * its DMA activity.
2011          */
2012         resp_buf = phba->MBslimaddr;
2013
2014         /* Disable the error attention */
2015         hc_copy = readl(phba->HCregaddr);
2016         writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
2017         readl(phba->HCregaddr); /* flush */
2018         phba->link_flag |= LS_IGNORE_ERATT;
2019
2020         if (readl(phba->HAregaddr) & HA_ERATT) {
2021                 /* Clear Chip error bit */
2022                 writel(HA_ERATT, phba->HAregaddr);
2023                 phba->pport->stopped = 1;
2024         }
2025
2026         mbox = 0;
2027         ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD;
2028         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP;
2029
2030         writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
2031         mbox_buf = phba->MBslimaddr;
2032         writel(mbox, mbox_buf);
2033
2034         for (i = 0;
2035              readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++)
2036                 mdelay(1);
2037
2038         if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) {
2039                 if (phba->sli.sli_flag & LPFC_SLI2_ACTIVE ||
2040                     phba->pport->stopped)
2041                         goto restore_hc;
2042                 else
2043                         goto clear_errat;
2044         }
2045
2046         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST;
2047         for (i = 0; readl(resp_buf) != mbox &&  i < 500; i++)
2048                 mdelay(1);
2049
2050 clear_errat:
2051
2052         while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500)
2053                 mdelay(1);
2054
2055         if (readl(phba->HAregaddr) & HA_ERATT) {
2056                 writel(HA_ERATT, phba->HAregaddr);
2057                 phba->pport->stopped = 1;
2058         }
2059
2060 restore_hc:
2061         phba->link_flag &= ~LS_IGNORE_ERATT;
2062         writel(hc_copy, phba->HCregaddr);
2063         readl(phba->HCregaddr); /* flush */
2064 }
2065
2066 int
2067 lpfc_sli_brdkill(struct lpfc_hba *phba)
2068 {
2069         struct lpfc_sli *psli;
2070         LPFC_MBOXQ_t *pmb;
2071         uint32_t status;
2072         uint32_t ha_copy;
2073         int retval;
2074         int i = 0;
2075
2076         psli = &phba->sli;
2077
2078         /* Kill HBA */
2079         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2080                         "0329 Kill HBA Data: x%x x%x\n",
2081                         phba->pport->port_state, psli->sli_flag);
2082
2083         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2084         if (!pmb)
2085                 return 1;
2086
2087         /* Disable the error attention */
2088         spin_lock_irq(&phba->hbalock);
2089         status = readl(phba->HCregaddr);
2090         status &= ~HC_ERINT_ENA;
2091         writel(status, phba->HCregaddr);
2092         readl(phba->HCregaddr); /* flush */
2093         phba->link_flag |= LS_IGNORE_ERATT;
2094         spin_unlock_irq(&phba->hbalock);
2095
2096         lpfc_kill_board(phba, pmb);
2097         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
2098         retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
2099
2100         if (retval != MBX_SUCCESS) {
2101                 if (retval != MBX_BUSY)
2102                         mempool_free(pmb, phba->mbox_mem_pool);
2103                 spin_lock_irq(&phba->hbalock);
2104                 phba->link_flag &= ~LS_IGNORE_ERATT;
2105                 spin_unlock_irq(&phba->hbalock);
2106                 return 1;
2107         }
2108
2109         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
2110
2111         mempool_free(pmb, phba->mbox_mem_pool);
2112
2113         /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
2114          * attention every 100ms for 3 seconds. If we don't get ERATT after
2115          * 3 seconds we still set HBA_ERROR state because the status of the
2116          * board is now undefined.
2117          */
2118         ha_copy = readl(phba->HAregaddr);
2119
2120         while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
2121                 mdelay(100);
2122                 ha_copy = readl(phba->HAregaddr);
2123         }
2124
2125         del_timer_sync(&psli->mbox_tmo);
2126         if (ha_copy & HA_ERATT) {
2127                 writel(HA_ERATT, phba->HAregaddr);
2128                 phba->pport->stopped = 1;
2129         }
2130         spin_lock_irq(&phba->hbalock);
2131         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2132         phba->link_flag &= ~LS_IGNORE_ERATT;
2133         spin_unlock_irq(&phba->hbalock);
2134
2135         psli->mbox_active = NULL;
2136         lpfc_hba_down_post(phba);
2137         phba->link_state = LPFC_HBA_ERROR;
2138
2139         return ha_copy & HA_ERATT ? 0 : 1;
2140 }
2141
2142 int
2143 lpfc_sli_brdreset(struct lpfc_hba *phba)
2144 {
2145         struct lpfc_sli *psli;
2146         struct lpfc_sli_ring *pring;
2147         uint16_t cfg_value;
2148         int i;
2149
2150         psli = &phba->sli;
2151
2152         /* Reset HBA */
2153         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2154                         "0325 Reset HBA Data: x%x x%x\n",
2155                         phba->pport->port_state, psli->sli_flag);
2156
2157         /* perform board reset */
2158         phba->fc_eventTag = 0;
2159         phba->pport->fc_myDID = 0;
2160         phba->pport->fc_prevDID = 0;
2161
2162         /* Turn off parity checking and serr during the physical reset */
2163         pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
2164         pci_write_config_word(phba->pcidev, PCI_COMMAND,
2165                               (cfg_value &
2166                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
2167
2168         psli->sli_flag &= ~(LPFC_SLI2_ACTIVE | LPFC_PROCESS_LA);
2169         /* Now toggle INITFF bit in the Host Control Register */
2170         writel(HC_INITFF, phba->HCregaddr);
2171         mdelay(1);
2172         readl(phba->HCregaddr); /* flush */
2173         writel(0, phba->HCregaddr);
2174         readl(phba->HCregaddr); /* flush */
2175
2176         /* Restore PCI cmd register */
2177         pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
2178
2179         /* Initialize relevant SLI info */
2180         for (i = 0; i < psli->num_rings; i++) {
2181                 pring = &psli->ring[i];
2182                 pring->flag = 0;
2183                 pring->rspidx = 0;
2184                 pring->next_cmdidx  = 0;
2185                 pring->local_getidx = 0;
2186                 pring->cmdidx = 0;
2187                 pring->missbufcnt = 0;
2188         }
2189
2190         phba->link_state = LPFC_WARM_START;
2191         return 0;
2192 }
2193
2194 int
2195 lpfc_sli_brdrestart(struct lpfc_hba *phba)
2196 {
2197         MAILBOX_t *mb;
2198         struct lpfc_sli *psli;
2199         uint16_t skip_post;
2200         volatile uint32_t word0;
2201         void __iomem *to_slim;
2202
2203         spin_lock_irq(&phba->hbalock);
2204
2205         psli = &phba->sli;
2206
2207         /* Restart HBA */
2208         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2209                         "0337 Restart HBA Data: x%x x%x\n",
2210                         phba->pport->port_state, psli->sli_flag);
2211
2212         word0 = 0;
2213         mb = (MAILBOX_t *) &word0;
2214         mb->mbxCommand = MBX_RESTART;
2215         mb->mbxHc = 1;
2216
2217         lpfc_reset_barrier(phba);
2218
2219         to_slim = phba->MBslimaddr;
2220         writel(*(uint32_t *) mb, to_slim);
2221         readl(to_slim); /* flush */
2222
2223         /* Only skip post after fc_ffinit is completed */
2224         if (phba->pport->port_state) {
2225                 skip_post = 1;
2226                 word0 = 1;      /* This is really setting up word1 */
2227         } else {
2228                 skip_post = 0;
2229                 word0 = 0;      /* This is really setting up word1 */
2230         }
2231         to_slim = phba->MBslimaddr + sizeof (uint32_t);
2232         writel(*(uint32_t *) mb, to_slim);
2233         readl(to_slim); /* flush */
2234
2235         lpfc_sli_brdreset(phba);
2236         phba->pport->stopped = 0;
2237         phba->link_state = LPFC_INIT_START;
2238
2239         spin_unlock_irq(&phba->hbalock);
2240
2241         memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
2242         psli->stats_start = get_seconds();
2243
2244         if (skip_post)
2245                 mdelay(100);
2246         else
2247                 mdelay(2000);
2248
2249         lpfc_hba_down_post(phba);
2250
2251         return 0;
2252 }
2253
2254 static int
2255 lpfc_sli_chipset_init(struct lpfc_hba *phba)
2256 {
2257         uint32_t status, i = 0;
2258
2259         /* Read the HBA Host Status Register */
2260         status = readl(phba->HSregaddr);
2261
2262         /* Check status register to see what current state is */
2263         i = 0;
2264         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
2265
2266                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
2267                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
2268                  * 4.
2269                  */
2270                 if (i++ >= 20) {
2271                         /* Adapter failed to init, timeout, status reg
2272                            <status> */
2273                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2274                                         "0436 Adapter failed to init, "
2275                                         "timeout, status reg x%x, "
2276                                         "FW Data: A8 x%x AC x%x\n", status,
2277                                         readl(phba->MBslimaddr + 0xa8),
2278                                         readl(phba->MBslimaddr + 0xac));
2279                         phba->link_state = LPFC_HBA_ERROR;
2280                         return -ETIMEDOUT;
2281                 }
2282
2283                 /* Check to see if any errors occurred during init */
2284                 if (status & HS_FFERM) {
2285                         /* ERROR: During chipset initialization */
2286                         /* Adapter failed to init, chipset, status reg
2287                            <status> */
2288                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2289                                         "0437 Adapter failed to init, "
2290                                         "chipset, status reg x%x, "
2291                                         "FW Data: A8 x%x AC x%x\n", status,
2292                                         readl(phba->MBslimaddr + 0xa8),
2293                                         readl(phba->MBslimaddr + 0xac));
2294                         phba->link_state = LPFC_HBA_ERROR;
2295                         return -EIO;
2296                 }
2297
2298                 if (i <= 5) {
2299                         msleep(10);
2300                 } else if (i <= 10) {
2301                         msleep(500);
2302                 } else {
2303                         msleep(2500);
2304                 }
2305
2306                 if (i == 15) {
2307                                 /* Do post */
2308                         phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2309                         lpfc_sli_brdrestart(phba);
2310                 }
2311                 /* Read the HBA Host Status Register */
2312                 status = readl(phba->HSregaddr);
2313         }
2314
2315         /* Check to see if any errors occurred during init */
2316         if (status & HS_FFERM) {
2317                 /* ERROR: During chipset initialization */
2318                 /* Adapter failed to init, chipset, status reg <status> */
2319                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2320                                 "0438 Adapter failed to init, chipset, "
2321                                 "status reg x%x, "
2322                                 "FW Data: A8 x%x AC x%x\n", status,
2323                                 readl(phba->MBslimaddr + 0xa8),
2324                                 readl(phba->MBslimaddr + 0xac));
2325                 phba->link_state = LPFC_HBA_ERROR;
2326                 return -EIO;
2327         }
2328
2329         /* Clear all interrupt enable conditions */
2330         writel(0, phba->HCregaddr);
2331         readl(phba->HCregaddr); /* flush */
2332
2333         /* setup host attn register */
2334         writel(0xffffffff, phba->HAregaddr);
2335         readl(phba->HAregaddr); /* flush */
2336         return 0;
2337 }
2338
2339 int
2340 lpfc_sli_hbq_count(void)
2341 {
2342         return ARRAY_SIZE(lpfc_hbq_defs);
2343 }
2344
2345 static int
2346 lpfc_sli_hbq_entry_count(void)
2347 {
2348         int  hbq_count = lpfc_sli_hbq_count();
2349         int  count = 0;
2350         int  i;
2351
2352         for (i = 0; i < hbq_count; ++i)
2353                 count += lpfc_hbq_defs[i]->entry_count;
2354         return count;
2355 }
2356
2357 int
2358 lpfc_sli_hbq_size(void)
2359 {
2360         return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry);
2361 }
2362
2363 static int
2364 lpfc_sli_hbq_setup(struct lpfc_hba *phba)
2365 {
2366         int  hbq_count = lpfc_sli_hbq_count();
2367         LPFC_MBOXQ_t *pmb;
2368         MAILBOX_t *pmbox;
2369         uint32_t hbqno;
2370         uint32_t hbq_entry_index;
2371
2372                                 /* Get a Mailbox buffer to setup mailbox
2373                                  * commands for HBA initialization
2374                                  */
2375         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2376
2377         if (!pmb)
2378                 return -ENOMEM;
2379
2380         pmbox = &pmb->mb;
2381
2382         /* Initialize the struct lpfc_sli_hbq structure for each hbq */
2383         phba->link_state = LPFC_INIT_MBX_CMDS;
2384         phba->hbq_in_use = 1;
2385
2386         hbq_entry_index = 0;
2387         for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
2388                 phba->hbqs[hbqno].next_hbqPutIdx = 0;
2389                 phba->hbqs[hbqno].hbqPutIdx      = 0;
2390                 phba->hbqs[hbqno].local_hbqGetIdx   = 0;
2391                 phba->hbqs[hbqno].entry_count =
2392                         lpfc_hbq_defs[hbqno]->entry_count;
2393                 lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno],
2394                         hbq_entry_index, pmb);
2395                 hbq_entry_index += phba->hbqs[hbqno].entry_count;
2396
2397                 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
2398                         /* Adapter failed to init, mbxCmd <cmd> CFG_RING,
2399                            mbxStatus <status>, ring <num> */
2400
2401                         lpfc_printf_log(phba, KERN_ERR,
2402                                         LOG_SLI | LOG_VPORT,
2403                                         "1805 Adapter failed to init. "
2404                                         "Data: x%x x%x x%x\n",
2405                                         pmbox->mbxCommand,
2406                                         pmbox->mbxStatus, hbqno);
2407
2408                         phba->link_state = LPFC_HBA_ERROR;
2409                         mempool_free(pmb, phba->mbox_mem_pool);
2410                         return ENXIO;
2411                 }
2412         }
2413         phba->hbq_count = hbq_count;
2414
2415         mempool_free(pmb, phba->mbox_mem_pool);
2416
2417         /* Initially populate or replenish the HBQs */
2418         for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
2419                 if (lpfc_sli_hbqbuf_init_hbqs(phba, hbqno))
2420                         return -ENOMEM;
2421         }
2422         return 0;
2423 }
2424
2425 static int
2426 lpfc_do_config_port(struct lpfc_hba *phba, int sli_mode)
2427 {
2428         LPFC_MBOXQ_t *pmb;
2429         uint32_t resetcount = 0, rc = 0, done = 0;
2430
2431         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2432         if (!pmb) {
2433                 phba->link_state = LPFC_HBA_ERROR;
2434                 return -ENOMEM;
2435         }
2436
2437         phba->sli_rev = sli_mode;
2438         while (resetcount < 2 && !done) {
2439                 spin_lock_irq(&phba->hbalock);
2440                 phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2441                 spin_unlock_irq(&phba->hbalock);
2442                 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
2443                 lpfc_sli_brdrestart(phba);
2444                 msleep(2500);
2445                 rc = lpfc_sli_chipset_init(phba);
2446                 if (rc)
2447                         break;
2448
2449                 spin_lock_irq(&phba->hbalock);
2450                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2451                 spin_unlock_irq(&phba->hbalock);
2452                 resetcount++;
2453
2454                 /* Call pre CONFIG_PORT mailbox command initialization.  A
2455                  * value of 0 means the call was successful.  Any other
2456                  * nonzero value is a failure, but if ERESTART is returned,
2457                  * the driver may reset the HBA and try again.
2458                  */
2459                 rc = lpfc_config_port_prep(phba);
2460                 if (rc == -ERESTART) {
2461                         phba->link_state = LPFC_LINK_UNKNOWN;
2462                         continue;
2463                 } else if (rc) {
2464                         break;
2465                 }
2466
2467                 phba->link_state = LPFC_INIT_MBX_CMDS;
2468                 lpfc_config_port(phba, pmb);
2469                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
2470                 if (rc != MBX_SUCCESS) {
2471                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2472                                 "0442 Adapter failed to init, mbxCmd x%x "
2473                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
2474                                 pmb->mb.mbxCommand, pmb->mb.mbxStatus, 0);
2475                         spin_lock_irq(&phba->hbalock);
2476                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
2477                         spin_unlock_irq(&phba->hbalock);
2478                         rc = -ENXIO;
2479                 } else {
2480                         done = 1;
2481                         phba->max_vpi = (phba->max_vpi &&
2482                                          pmb->mb.un.varCfgPort.gmv) != 0
2483                                 ? pmb->mb.un.varCfgPort.max_vpi
2484                                 : 0;
2485                 }
2486         }
2487
2488         if (!done) {
2489                 rc = -EINVAL;
2490                 goto do_prep_failed;
2491         }
2492
2493         if ((pmb->mb.un.varCfgPort.sli_mode == 3) &&
2494                 (!pmb->mb.un.varCfgPort.cMA)) {
2495                 rc = -ENXIO;
2496         }
2497
2498 do_prep_failed:
2499         mempool_free(pmb, phba->mbox_mem_pool);
2500         return rc;
2501 }
2502
2503 int
2504 lpfc_sli_hba_setup(struct lpfc_hba *phba)
2505 {
2506         uint32_t rc;
2507         int  mode = 3;
2508
2509         switch (lpfc_sli_mode) {
2510         case 2:
2511                 if (phba->cfg_enable_npiv) {
2512                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2513                                 "1824 NPIV enabled: Override lpfc_sli_mode "
2514                                 "parameter (%d) to auto (0).\n",
2515                                 lpfc_sli_mode);
2516                         break;
2517                 }
2518                 mode = 2;
2519                 break;
2520         case 0:
2521         case 3:
2522                 break;
2523         default:
2524                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2525                                 "1819 Unrecognized lpfc_sli_mode "
2526                                 "parameter: %d.\n", lpfc_sli_mode);
2527
2528                 break;
2529         }
2530
2531         rc = lpfc_do_config_port(phba, mode);
2532         if (rc && lpfc_sli_mode == 3)
2533                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
2534                                 "1820 Unable to select SLI-3.  "
2535                                 "Not supported by adapter.\n");
2536         if (rc && mode != 2)
2537                 rc = lpfc_do_config_port(phba, 2);
2538         if (rc)
2539                 goto lpfc_sli_hba_setup_error;
2540
2541         if (phba->sli_rev == 3) {
2542                 phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE;
2543                 phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE;
2544                 phba->sli3_options |= LPFC_SLI3_ENABLED;
2545                 phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
2546
2547         } else {
2548                 phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE;
2549                 phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE;
2550                 phba->sli3_options = 0;
2551         }
2552
2553         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2554                         "0444 Firmware in SLI %x mode. Max_vpi %d\n",
2555                         phba->sli_rev, phba->max_vpi);
2556         rc = lpfc_sli_ring_map(phba);
2557
2558         if (rc)
2559                 goto lpfc_sli_hba_setup_error;
2560
2561                                 /* Init HBQs */
2562
2563         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
2564                 rc = lpfc_sli_hbq_setup(phba);
2565                 if (rc)
2566                         goto lpfc_sli_hba_setup_error;
2567         }
2568
2569         phba->sli.sli_flag |= LPFC_PROCESS_LA;
2570
2571         rc = lpfc_config_port_post(phba);
2572         if (rc)
2573                 goto lpfc_sli_hba_setup_error;
2574
2575         return rc;
2576
2577 lpfc_sli_hba_setup_error:
2578         phba->link_state = LPFC_HBA_ERROR;
2579         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2580                         "0445 Firmware initialization failed\n");
2581         return rc;
2582 }
2583
2584 /*! lpfc_mbox_timeout
2585  *
2586  * \pre
2587  * \post
2588  * \param hba Pointer to per struct lpfc_hba structure
2589  * \param l1  Pointer to the driver's mailbox queue.
2590  * \return
2591  *   void
2592  *
2593  * \b Description:
2594  *
2595  * This routine handles mailbox timeout events at timer interrupt context.
2596  */
2597 void
2598 lpfc_mbox_timeout(unsigned long ptr)
2599 {
2600         struct lpfc_hba  *phba = (struct lpfc_hba *) ptr;
2601         unsigned long iflag;
2602         uint32_t tmo_posted;
2603
2604         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
2605         tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO;
2606         if (!tmo_posted)
2607                 phba->pport->work_port_events |= WORKER_MBOX_TMO;
2608         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
2609
2610         if (!tmo_posted)
2611                 lpfc_worker_wake_up(phba);
2612         return;
2613 }
2614
2615 void
2616 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
2617 {
2618         LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
2619         MAILBOX_t *mb = &pmbox->mb;
2620         struct lpfc_sli *psli = &phba->sli;
2621         struct lpfc_sli_ring *pring;
2622
2623         if (!(phba->pport->work_port_events & WORKER_MBOX_TMO)) {
2624                 return;
2625         }
2626
2627         /* Mbox cmd <mbxCommand> timeout */
2628         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2629                         "0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
2630                         mb->mbxCommand,
2631                         phba->pport->port_state,
2632                         phba->sli.sli_flag,
2633                         phba->sli.mbox_active);
2634
2635         /* Setting state unknown so lpfc_sli_abort_iocb_ring
2636          * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing
2637          * it to fail all oustanding SCSI IO.
2638          */
2639         spin_lock_irq(&phba->pport->work_port_lock);
2640         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
2641         spin_unlock_irq(&phba->pport->work_port_lock);
2642         spin_lock_irq(&phba->hbalock);
2643         phba->link_state = LPFC_LINK_UNKNOWN;
2644         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
2645         spin_unlock_irq(&phba->hbalock);
2646
2647         pring = &psli->ring[psli->fcp_ring];
2648         lpfc_sli_abort_iocb_ring(phba, pring);
2649
2650         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
2651                         "0345 Resetting board due to mailbox timeout\n");
2652         /*
2653          * lpfc_offline calls lpfc_sli_hba_down which will clean up
2654          * on oustanding mailbox commands.
2655          */
2656         /* If resets are disabled then set error state and return. */
2657         if (!phba->cfg_enable_hba_reset) {
2658                 phba->link_state = LPFC_HBA_ERROR;
2659                 return;
2660         }
2661         lpfc_offline_prep(phba);
2662         lpfc_offline(phba);
2663         lpfc_sli_brdrestart(phba);
2664         lpfc_online(phba);
2665         lpfc_unblock_mgmt_io(phba);
2666         return;
2667 }
2668
2669 int
2670 lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
2671 {
2672         MAILBOX_t *mb;
2673         struct lpfc_sli *psli = &phba->sli;
2674         uint32_t status, evtctr;
2675         uint32_t ha_copy;
2676         int i;
2677         unsigned long timeout;
2678         unsigned long drvr_flag = 0;
2679         volatile uint32_t word0, ldata;
2680         void __iomem *to_slim;
2681         int processing_queue = 0;
2682
2683         spin_lock_irqsave(&phba->hbalock, drvr_flag);
2684         if (!pmbox) {
2685                 /* processing mbox queue from intr_handler */
2686                 processing_queue = 1;
2687                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2688                 pmbox = lpfc_mbox_get(phba);
2689                 if (!pmbox) {
2690                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2691                         return MBX_SUCCESS;
2692                 }
2693         }
2694
2695         if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
2696                 pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
2697                 if(!pmbox->vport) {
2698                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2699                         lpfc_printf_log(phba, KERN_ERR,
2700                                         LOG_MBOX | LOG_VPORT,
2701                                         "1806 Mbox x%x failed. No vport\n",
2702                                         pmbox->mb.mbxCommand);
2703                         dump_stack();
2704                         goto out_not_finished;
2705                 }
2706         }
2707
2708         /* If the PCI channel is in offline state, do not post mbox. */
2709         if (unlikely(pci_channel_offline(phba->pcidev))) {
2710                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2711                 goto out_not_finished;
2712         }
2713
2714         psli = &phba->sli;
2715
2716         mb = &pmbox->mb;
2717         status = MBX_SUCCESS;
2718
2719         if (phba->link_state == LPFC_HBA_ERROR) {
2720                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2721
2722                 /* Mbox command <mbxCommand> cannot issue */
2723                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2724                 goto out_not_finished;
2725         }
2726
2727         if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
2728             !(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
2729                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2730                 LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2731                 goto out_not_finished;
2732         }
2733
2734         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
2735                 /* Polling for a mbox command when another one is already active
2736                  * is not allowed in SLI. Also, the driver must have established
2737                  * SLI2 mode to queue and process multiple mbox commands.
2738                  */
2739
2740                 if (flag & MBX_POLL) {
2741                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2742
2743                         /* Mbox command <mbxCommand> cannot issue */
2744                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2745                         goto out_not_finished;
2746                 }
2747
2748                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
2749                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2750                         /* Mbox command <mbxCommand> cannot issue */
2751                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2752                         goto out_not_finished;
2753                 }
2754
2755                 /* Another mailbox command is still being processed, queue this
2756                  * command to be processed later.
2757                  */
2758                 lpfc_mbox_put(phba, pmbox);
2759
2760                 /* Mbox cmd issue - BUSY */
2761                 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
2762                                 "(%d):0308 Mbox cmd issue - BUSY Data: "
2763                                 "x%x x%x x%x x%x\n",
2764                                 pmbox->vport ? pmbox->vport->vpi : 0xffffff,
2765                                 mb->mbxCommand, phba->pport->port_state,
2766                                 psli->sli_flag, flag);
2767
2768                 psli->slistat.mbox_busy++;
2769                 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2770
2771                 if (pmbox->vport) {
2772                         lpfc_debugfs_disc_trc(pmbox->vport,
2773                                 LPFC_DISC_TRC_MBOX_VPORT,
2774                                 "MBOX Bsy vport:  cmd:x%x mb:x%x x%x",
2775                                 (uint32_t)mb->mbxCommand,
2776                                 mb->un.varWords[0], mb->un.varWords[1]);
2777                 }
2778                 else {
2779                         lpfc_debugfs_disc_trc(phba->pport,
2780                                 LPFC_DISC_TRC_MBOX,
2781                                 "MBOX Bsy:        cmd:x%x mb:x%x x%x",
2782                                 (uint32_t)mb->mbxCommand,
2783                                 mb->un.varWords[0], mb->un.varWords[1]);
2784                 }
2785
2786                 return MBX_BUSY;
2787         }
2788
2789         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2790
2791         /* If we are not polling, we MUST be in SLI2 mode */
2792         if (flag != MBX_POLL) {
2793                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE) &&
2794                     (mb->mbxCommand != MBX_KILL_BOARD)) {
2795                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2796                         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2797                         /* Mbox command <mbxCommand> cannot issue */
2798                         LOG_MBOX_CANNOT_ISSUE_DATA(phba, pmbox, psli, flag);
2799                         goto out_not_finished;
2800                 }
2801                 /* timeout active mbox command */
2802                 mod_timer(&psli->mbox_tmo, (jiffies +
2803                                (HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand))));
2804         }
2805
2806         /* Mailbox cmd <cmd> issue */
2807         lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
2808                         "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x "
2809                         "x%x\n",
2810                         pmbox->vport ? pmbox->vport->vpi : 0,
2811                         mb->mbxCommand, phba->pport->port_state,
2812                         psli->sli_flag, flag);
2813
2814         if (mb->mbxCommand != MBX_HEARTBEAT) {
2815                 if (pmbox->vport) {
2816                         lpfc_debugfs_disc_trc(pmbox->vport,
2817                                 LPFC_DISC_TRC_MBOX_VPORT,
2818                                 "MBOX Send vport: cmd:x%x mb:x%x x%x",
2819                                 (uint32_t)mb->mbxCommand,
2820                                 mb->un.varWords[0], mb->un.varWords[1]);
2821                 }
2822                 else {
2823                         lpfc_debugfs_disc_trc(phba->pport,
2824                                 LPFC_DISC_TRC_MBOX,
2825                                 "MBOX Send:       cmd:x%x mb:x%x x%x",
2826                                 (uint32_t)mb->mbxCommand,
2827                                 mb->un.varWords[0], mb->un.varWords[1]);
2828                 }
2829         }
2830
2831         psli->slistat.mbox_cmd++;
2832         evtctr = psli->slistat.mbox_event;
2833
2834         /* next set own bit for the adapter and copy over command word */
2835         mb->mbxOwner = OWN_CHIP;
2836
2837         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2838                 /* First copy command data to host SLIM area */
2839                 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
2840         } else {
2841                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2842                         /* copy command data into host mbox for cmpl */
2843                         lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
2844                                               MAILBOX_CMD_SIZE);
2845                 }
2846
2847                 /* First copy mbox command data to HBA SLIM, skip past first
2848                    word */
2849                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
2850                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
2851                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
2852
2853                 /* Next copy over first word, with mbxOwner set */
2854                 ldata = *((volatile uint32_t *)mb);
2855                 to_slim = phba->MBslimaddr;
2856                 writel(ldata, to_slim);
2857                 readl(to_slim); /* flush */
2858
2859                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2860                         /* switch over to host mailbox */
2861                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
2862                 }
2863         }
2864
2865         wmb();
2866
2867         switch (flag) {
2868         case MBX_NOWAIT:
2869                 /* Set up reference to mailbox command */
2870                 psli->mbox_active = pmbox;
2871                 /* Interrupt board to do it */
2872                 writel(CA_MBATT, phba->CAregaddr);
2873                 readl(phba->CAregaddr); /* flush */
2874                 /* Don't wait for it to finish, just return */
2875                 break;
2876
2877         case MBX_POLL:
2878                 /* Set up null reference to mailbox command */
2879                 psli->mbox_active = NULL;
2880                 /* Interrupt board to do it */
2881                 writel(CA_MBATT, phba->CAregaddr);
2882                 readl(phba->CAregaddr); /* flush */
2883
2884                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2885                         /* First read mbox status word */
2886                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
2887                         word0 = le32_to_cpu(word0);
2888                 } else {
2889                         /* First read mbox status word */
2890                         word0 = readl(phba->MBslimaddr);
2891                 }
2892
2893                 /* Read the HBA Host Attention Register */
2894                 ha_copy = readl(phba->HAregaddr);
2895                 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
2896                                                              mb->mbxCommand) *
2897                                            1000) + jiffies;
2898                 i = 0;
2899                 /* Wait for command to complete */
2900                 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
2901                        (!(ha_copy & HA_MBATT) &&
2902                         (phba->link_state > LPFC_WARM_START))) {
2903                         if (time_after(jiffies, timeout)) {
2904                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2905                                 spin_unlock_irqrestore(&phba->hbalock,
2906                                                        drvr_flag);
2907                                 goto out_not_finished;
2908                         }
2909
2910                         /* Check if we took a mbox interrupt while we were
2911                            polling */
2912                         if (((word0 & OWN_CHIP) != OWN_CHIP)
2913                             && (evtctr != psli->slistat.mbox_event))
2914                                 break;
2915
2916                         if (i++ > 10) {
2917                                 spin_unlock_irqrestore(&phba->hbalock,
2918                                                        drvr_flag);
2919                                 msleep(1);
2920                                 spin_lock_irqsave(&phba->hbalock, drvr_flag);
2921                         }
2922
2923                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2924                                 /* First copy command data */
2925                                 word0 = *((volatile uint32_t *)
2926                                                 &phba->slim2p->mbx);
2927                                 word0 = le32_to_cpu(word0);
2928                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2929                                         MAILBOX_t *slimmb;
2930                                         volatile uint32_t slimword0;
2931                                         /* Check real SLIM for any errors */
2932                                         slimword0 = readl(phba->MBslimaddr);
2933                                         slimmb = (MAILBOX_t *) & slimword0;
2934                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
2935                                             && slimmb->mbxStatus) {
2936                                                 psli->sli_flag &=
2937                                                     ~LPFC_SLI2_ACTIVE;
2938                                                 word0 = slimword0;
2939                                         }
2940                                 }
2941                         } else {
2942                                 /* First copy command data */
2943                                 word0 = readl(phba->MBslimaddr);
2944                         }
2945                         /* Read the HBA Host Attention Register */
2946                         ha_copy = readl(phba->HAregaddr);
2947                 }
2948
2949                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2950                         /* copy results back to user */
2951                         lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
2952                                               MAILBOX_CMD_SIZE);
2953                 } else {
2954                         /* First copy command data */
2955                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2956                                                         MAILBOX_CMD_SIZE);
2957                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2958                                 pmbox->context2) {
2959                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
2960                                       phba->MBslimaddr + DMP_RSP_OFFSET,
2961                                                       mb->un.varDmp.word_cnt);
2962                         }
2963                 }
2964
2965                 writel(HA_MBATT, phba->HAregaddr);
2966                 readl(phba->HAregaddr); /* flush */
2967
2968                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2969                 status = mb->mbxStatus;
2970         }
2971
2972         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
2973         return status;
2974
2975 out_not_finished:
2976         if (processing_queue) {
2977                 pmbox->mb.mbxStatus = MBX_NOT_FINISHED;
2978                 lpfc_mbox_cmpl_put(phba, pmbox);
2979         }
2980         return MBX_NOT_FINISHED;
2981 }
2982
2983 /*
2984  * Caller needs to hold lock.
2985  */
2986 static void
2987 __lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2988                     struct lpfc_iocbq *piocb)
2989 {
2990         /* Insert the caller's iocb in the txq tail for later processing. */
2991         list_add_tail(&piocb->list, &pring->txq);
2992         pring->txq_cnt++;
2993 }
2994
2995 static struct lpfc_iocbq *
2996 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2997                    struct lpfc_iocbq **piocb)
2998 {
2999         struct lpfc_iocbq * nextiocb;
3000
3001         nextiocb = lpfc_sli_ringtx_get(phba, pring);
3002         if (!nextiocb) {
3003                 nextiocb = *piocb;
3004                 *piocb = NULL;
3005         }
3006
3007         return nextiocb;
3008 }
3009
3010 /*
3011  * Lockless version of lpfc_sli_issue_iocb.
3012  */
3013 static int
3014 __lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3015                     struct lpfc_iocbq *piocb, uint32_t flag)
3016 {
3017         struct lpfc_iocbq *nextiocb;
3018         IOCB_t *iocb;
3019
3020         if (piocb->iocb_cmpl && (!piocb->vport) &&
3021            (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
3022            (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
3023                 lpfc_printf_log(phba, KERN_ERR,
3024                                 LOG_SLI | LOG_VPORT,
3025                                 "1807 IOCB x%x failed. No vport\n",
3026                                 piocb->iocb.ulpCommand);
3027                 dump_stack();
3028                 return IOCB_ERROR;
3029         }
3030
3031
3032         /* If the PCI channel is in offline state, do not post iocbs. */
3033         if (unlikely(pci_channel_offline(phba->pcidev)))
3034                 return IOCB_ERROR;
3035
3036         /*
3037          * We should never get an IOCB if we are in a < LINK_DOWN state
3038          */
3039         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
3040                 return IOCB_ERROR;
3041
3042         /*
3043          * Check to see if we are blocking IOCB processing because of a
3044          * outstanding event.
3045          */
3046         if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
3047                 goto iocb_busy;
3048
3049         if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
3050                 /*
3051                  * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF
3052                  * can be issued if the link is not up.
3053                  */
3054                 switch (piocb->iocb.ulpCommand) {
3055                 case CMD_QUE_RING_BUF_CN:
3056                 case CMD_QUE_RING_BUF64_CN:
3057                         /*
3058                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
3059                          * completion, iocb_cmpl MUST be 0.
3060                          */
3061                         if (piocb->iocb_cmpl)
3062                                 piocb->iocb_cmpl = NULL;
3063                         /*FALLTHROUGH*/
3064                 case CMD_CREATE_XRI_CR:
3065                 case CMD_CLOSE_XRI_CN:
3066                 case CMD_CLOSE_XRI_CX:
3067                         break;
3068                 default:
3069                         goto iocb_busy;
3070                 }
3071
3072         /*
3073          * For FCP commands, we must be in a state where we can process link
3074          * attention events.
3075          */
3076         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
3077                             !(phba->sli.sli_flag & LPFC_PROCESS_LA))) {
3078                 goto iocb_busy;
3079         }
3080
3081         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
3082                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
3083                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
3084
3085         if (iocb)
3086                 lpfc_sli_update_ring(phba, pring);
3087         else
3088                 lpfc_sli_update_full_ring(phba, pring);
3089
3090         if (!piocb)
3091                 return IOCB_SUCCESS;
3092
3093         goto out_busy;
3094
3095  iocb_busy:
3096         pring->stats.iocb_cmd_delay++;
3097
3098  out_busy:
3099
3100         if (!(flag & SLI_IOCB_RET_IOCB)) {
3101                 __lpfc_sli_ringtx_put(phba, pring, piocb);
3102                 return IOCB_SUCCESS;
3103         }
3104
3105         return IOCB_BUSY;
3106 }
3107
3108
3109 int
3110 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3111                     struct lpfc_iocbq *piocb, uint32_t flag)
3112 {
3113         unsigned long iflags;
3114         int rc;
3115
3116         spin_lock_irqsave(&phba->hbalock, iflags);
3117         rc = __lpfc_sli_issue_iocb(phba, pring, piocb, flag);
3118         spin_unlock_irqrestore(&phba->hbalock, iflags);
3119
3120         return rc;
3121 }
3122
3123 static int
3124 lpfc_extra_ring_setup( struct lpfc_hba *phba)
3125 {
3126         struct lpfc_sli *psli;
3127         struct lpfc_sli_ring *pring;
3128
3129         psli = &phba->sli;
3130
3131         /* Adjust cmd/rsp ring iocb entries more evenly */
3132
3133         /* Take some away from the FCP ring */
3134         pring = &psli->ring[psli->fcp_ring];
3135         pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3136         pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3137         pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3138         pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3139
3140         /* and give them to the extra ring */
3141         pring = &psli->ring[psli->extra_ring];
3142
3143         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3144         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3145         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3146         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3147
3148         /* Setup default profile for this ring */
3149         pring->iotag_max = 4096;
3150         pring->num_mask = 1;
3151         pring->prt[0].profile = 0;      /* Mask 0 */
3152         pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
3153         pring->prt[0].type = phba->cfg_multi_ring_type;
3154         pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
3155         return 0;
3156 }
3157
3158 static void
3159 lpfc_sli_async_event_handler(struct lpfc_hba * phba,
3160         struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
3161 {
3162         IOCB_t *icmd;
3163         uint16_t evt_code;
3164         uint16_t temp;
3165         struct temp_event temp_event_data;
3166         struct Scsi_Host *shost;
3167
3168         icmd = &iocbq->iocb;
3169         evt_code = icmd->un.asyncstat.evt_code;
3170         temp = icmd->ulpContext;
3171
3172         if ((evt_code != ASYNC_TEMP_WARN) &&
3173                 (evt_code != ASYNC_TEMP_SAFE)) {
3174                 lpfc_printf_log(phba,
3175                         KERN_ERR,
3176                         LOG_SLI,
3177                         "0346 Ring %d handler: unexpected ASYNC_STATUS"
3178                         " evt_code 0x%x\n",
3179                         pring->ringno,
3180                         icmd->un.asyncstat.evt_code);
3181                 return;
3182         }
3183         temp_event_data.data = (uint32_t)temp;
3184         temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
3185         if (evt_code == ASYNC_TEMP_WARN) {
3186                 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
3187                 lpfc_printf_log(phba,
3188                                 KERN_ERR,
3189                                 LOG_TEMP,
3190                                 "0347 Adapter is very hot, please take "
3191                                 "corrective action. temperature : %d Celsius\n",
3192                                 temp);
3193         }
3194         if (evt_code == ASYNC_TEMP_SAFE) {
3195                 temp_event_data.event_code = LPFC_NORMAL_TEMP;
3196                 lpfc_printf_log(phba,
3197                                 KERN_ERR,
3198                                 LOG_TEMP,
3199                                 "0340 Adapter temperature is OK now. "
3200                                 "temperature : %d Celsius\n",
3201                                 temp);
3202         }
3203
3204         /* Send temperature change event to applications */
3205         shost = lpfc_shost_from_vport(phba->pport);
3206         fc_host_post_vendor_event(shost, fc_get_event_number(),
3207                 sizeof(temp_event_data), (char *) &temp_event_data,
3208                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
3209
3210 }
3211
3212
3213 int
3214 lpfc_sli_setup(struct lpfc_hba *phba)
3215 {
3216         int i, totiocbsize = 0;
3217         struct lpfc_sli *psli = &phba->sli;
3218         struct lpfc_sli_ring *pring;
3219
3220         psli->num_rings = MAX_CONFIGURED_RINGS;
3221         psli->sli_flag = 0;
3222         psli->fcp_ring = LPFC_FCP_RING;
3223         psli->next_ring = LPFC_FCP_NEXT_RING;
3224         psli->extra_ring = LPFC_EXTRA_RING;
3225
3226         psli->iocbq_lookup = NULL;
3227         psli->iocbq_lookup_len = 0;
3228         psli->last_iotag = 0;
3229
3230         for (i = 0; i < psli->num_rings; i++) {
3231                 pring = &psli->ring[i];
3232                 switch (i) {
3233                 case LPFC_FCP_RING:     /* ring 0 - FCP */
3234                         /* numCiocb and numRiocb are used in config_port */
3235                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
3236                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
3237                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
3238                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
3239                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
3240                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
3241                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3242                                                         SLI3_IOCB_CMD_SIZE :
3243                                                         SLI2_IOCB_CMD_SIZE;
3244                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3245                                                         SLI3_IOCB_RSP_SIZE :
3246                                                         SLI2_IOCB_RSP_SIZE;
3247                         pring->iotag_ctr = 0;
3248                         pring->iotag_max =
3249                             (phba->cfg_hba_queue_depth * 2);
3250                         pring->fast_iotag = pring->iotag_max;
3251                         pring->num_mask = 0;
3252                         break;
3253                 case LPFC_EXTRA_RING:   /* ring 1 - EXTRA */
3254                         /* numCiocb and numRiocb are used in config_port */
3255                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
3256                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
3257                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3258                                                         SLI3_IOCB_CMD_SIZE :
3259                                                         SLI2_IOCB_CMD_SIZE;
3260                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3261                                                         SLI3_IOCB_RSP_SIZE :
3262                                                         SLI2_IOCB_RSP_SIZE;
3263                         pring->iotag_max = phba->cfg_hba_queue_depth;
3264                         pring->num_mask = 0;
3265                         break;
3266                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
3267                         /* numCiocb and numRiocb are used in config_port */
3268                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
3269                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
3270                         pring->sizeCiocb = (phba->sli_rev == 3) ?
3271                                                         SLI3_IOCB_CMD_SIZE :
3272                                                         SLI2_IOCB_CMD_SIZE;
3273                         pring->sizeRiocb = (phba->sli_rev == 3) ?
3274                                                         SLI3_IOCB_RSP_SIZE :
3275                                                         SLI2_IOCB_RSP_SIZE;
3276                         pring->fast_iotag = 0;
3277                         pring->iotag_ctr = 0;
3278                         pring->iotag_max = 4096;
3279                         pring->lpfc_sli_rcv_async_status =
3280                                 lpfc_sli_async_event_handler;
3281                         pring->num_mask = 4;
3282                         pring->prt[0].profile = 0;      /* Mask 0 */
3283                         pring->prt[0].rctl = FC_ELS_REQ;
3284                         pring->prt[0].type = FC_ELS_DATA;
3285                         pring->prt[0].lpfc_sli_rcv_unsol_event =
3286                             lpfc_els_unsol_event;
3287                         pring->prt[1].profile = 0;      /* Mask 1 */
3288                         pring->prt[1].rctl = FC_ELS_RSP;
3289                         pring->prt[1].type = FC_ELS_DATA;
3290                         pring->prt[1].lpfc_sli_rcv_unsol_event =
3291                             lpfc_els_unsol_event;
3292                         pring->prt[2].profile = 0;      /* Mask 2 */
3293                         /* NameServer Inquiry */
3294                         pring->prt[2].rctl = FC_UNSOL_CTL;
3295                         /* NameServer */
3296                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
3297                         pring->prt[2].lpfc_sli_rcv_unsol_event =
3298                             lpfc_ct_unsol_event;
3299                         pring->prt[3].profile = 0;      /* Mask 3 */
3300                         /* NameServer response */
3301                         pring->prt[3].rctl = FC_SOL_CTL;
3302                         /* NameServer */
3303                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
3304                         pring->prt[3].lpfc_sli_rcv_unsol_event =
3305                             lpfc_ct_unsol_event;
3306                         break;
3307                 }
3308                 totiocbsize += (pring->numCiocb * pring->sizeCiocb) +
3309                                 (pring->numRiocb * pring->sizeRiocb);
3310         }
3311         if (totiocbsize > MAX_SLIM_IOCB_SIZE) {
3312                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
3313                 printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in "
3314                        "SLI2 SLIM Data: x%x x%lx\n",
3315                        phba->brd_no, totiocbsize,
3316                        (unsigned long) MAX_SLIM_IOCB_SIZE);
3317         }
3318         if (phba->cfg_multi_ring_support == 2)
3319                 lpfc_extra_ring_setup(phba);
3320
3321         return 0;
3322 }
3323
3324 int
3325 lpfc_sli_queue_setup(struct lpfc_hba *phba)
3326 {
3327         struct lpfc_sli *psli;
3328         struct lpfc_sli_ring *pring;
3329         int i;
3330
3331         psli = &phba->sli;
3332         spin_lock_irq(&phba->hbalock);
3333         INIT_LIST_HEAD(&psli->mboxq);
3334         INIT_LIST_HEAD(&psli->mboxq_cmpl);
3335         /* Initialize list headers for txq and txcmplq as double linked lists */
3336         for (i = 0; i < psli->num_rings; i++) {
3337                 pring = &psli->ring[i];
3338                 pring->ringno = i;
3339                 pring->next_cmdidx  = 0;
3340                 pring->local_getidx = 0;
3341                 pring->cmdidx = 0;
3342                 INIT_LIST_HEAD(&pring->txq);
3343                 INIT_LIST_HEAD(&pring->txcmplq);
3344                 INIT_LIST_HEAD(&pring->iocb_continueq);
3345                 INIT_LIST_HEAD(&pring->iocb_continue_saveq);
3346                 INIT_LIST_HEAD(&pring->postbufq);
3347         }
3348         spin_unlock_irq(&phba->hbalock);
3349         return 1;
3350 }
3351
3352 int
3353 lpfc_sli_host_down(struct lpfc_vport *vport)
3354 {
3355         LIST_HEAD(completions);
3356         struct lpfc_hba *phba = vport->phba;
3357         struct lpfc_sli *psli = &phba->sli;
3358         struct lpfc_sli_ring *pring;
3359         struct lpfc_iocbq *iocb, *next_iocb;
3360         int i;
3361         unsigned long flags = 0;
3362         uint16_t prev_pring_flag;
3363
3364         lpfc_cleanup_discovery_resources(vport);
3365
3366         spin_lock_irqsave(&phba->hbalock, flags);
3367         for (i = 0; i < psli->num_rings; i++) {
3368                 pring = &psli->ring[i];
3369                 prev_pring_flag = pring->flag;
3370                 /* Only slow rings */
3371                 if (pring->ringno == LPFC_ELS_RING) {
3372                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
3373                         /* Set the lpfc data pending flag */
3374                         set_bit(LPFC_DATA_READY, &phba->data_flags);
3375                 }
3376                 /*
3377                  * Error everything on the txq since these iocbs have not been
3378                  * given to the FW yet.
3379                  */
3380                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
3381                         if (iocb->vport != vport)
3382                                 continue;
3383                         list_move_tail(&iocb->list, &completions);
3384                         pring->txq_cnt--;
3385                 }
3386
3387                 /* Next issue ABTS for everything on the txcmplq */
3388                 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
3389                                                                         list) {
3390                         if (iocb->vport != vport)
3391                                 continue;
3392                         lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3393                 }
3394
3395                 pring->flag = prev_pring_flag;
3396         }
3397
3398         spin_unlock_irqrestore(&phba->hbalock, flags);
3399
3400         while (!list_empty(&completions)) {
3401                 list_remove_head(&completions, iocb, struct lpfc_iocbq, list);
3402
3403                 if (!iocb->iocb_cmpl)
3404                         lpfc_sli_release_iocbq(phba, iocb);
3405                 else {
3406                         iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
3407                         iocb->iocb.un.ulpWord[4] = IOERR_SLI_DOWN;
3408                         (iocb->iocb_cmpl) (phba, iocb, iocb);
3409                 }
3410         }
3411         return 1;
3412 }
3413
3414 int
3415 lpfc_sli_hba_down(struct lpfc_hba *phba)
3416 {
3417         LIST_HEAD(completions);
3418         struct lpfc_sli *psli = &phba->sli;
3419         struct lpfc_sli_ring *pring;
3420         struct lpfc_dmabuf *buf_ptr;
3421         LPFC_MBOXQ_t *pmb;
3422         struct lpfc_iocbq *iocb;
3423         IOCB_t *cmd = NULL;
3424         int i;
3425         unsigned long flags = 0;
3426
3427         lpfc_hba_down_prep(phba);
3428
3429         lpfc_fabric_abort_hba(phba);
3430
3431         spin_lock_irqsave(&phba->hbalock, flags);
3432         for (i = 0; i < psli->num_rings; i++) {
3433                 pring = &psli->ring[i];
3434                 /* Only slow rings */
3435                 if (pring->ringno == LPFC_ELS_RING) {
3436                         pring->flag |= LPFC_DEFERRED_RING_EVENT;
3437                         /* Set the lpfc data pending flag */
3438                         set_bit(LPFC_DATA_READY, &phba->data_flags);
3439                 }
3440
3441                 /*
3442                  * Error everything on the txq since these iocbs have not been
3443                  * given to the FW yet.
3444                  */
3445                 list_splice_init(&pring->txq, &completions);
3446                 pring->txq_cnt = 0;
3447
3448         }
3449         spin_unlock_irqrestore(&phba->hbalock, flags);
3450
3451         while (!list_empty(&completions)) {
3452                 list_remove_head(&completions, iocb, struct lpfc_iocbq, list);
3453                 cmd = &iocb->iocb;
3454
3455                 if (!iocb->iocb_cmpl)
3456                         lpfc_sli_release_iocbq(phba, iocb);
3457                 else {
3458                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
3459                         cmd->un.ulpWord[4] = IOERR_SLI_DOWN;
3460                         (iocb->iocb_cmpl) (phba, iocb, iocb);
3461                 }
3462         }
3463
3464         spin_lock_irqsave(&phba->hbalock, flags);
3465         list_splice_init(&phba->elsbuf, &completions);
3466         phba->elsbuf_cnt = 0;
3467         phba->elsbuf_prev_cnt = 0;
3468         spin_unlock_irqrestore(&phba->hbalock, flags);
3469
3470         while (!list_empty(&completions)) {
3471                 list_remove_head(&completions, buf_ptr,
3472                         struct lpfc_dmabuf, list);
3473                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
3474                 kfree(buf_ptr);
3475         }
3476
3477         /* Return any active mbox cmds */
3478         del_timer_sync(&psli->mbox_tmo);
3479         spin_lock_irqsave(&phba->hbalock, flags);
3480
3481         spin_lock(&phba->pport->work_port_lock);
3482         phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
3483         spin_unlock(&phba->pport->work_port_lock);
3484
3485         /* Return any pending or completed mbox cmds */
3486         list_splice_init(&phba->sli.mboxq, &completions);
3487         if (psli->mbox_active) {
3488                 list_add_tail(&psli->mbox_active->list, &completions);
3489                 psli->mbox_active = NULL;
3490                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
3491         }
3492         list_splice_init(&phba->sli.mboxq_cmpl, &completions);
3493         spin_unlock_irqrestore(&phba->hbalock, flags);
3494
3495         while (!list_empty(&completions)) {
3496                 list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
3497                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
3498                 if (pmb->mbox_cmpl)
3499                         pmb->mbox_cmpl(phba,pmb);
3500         }
3501         return 1;
3502 }
3503
3504 void
3505 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
3506 {
3507         uint32_t *src = srcp;
3508         uint32_t *dest = destp;
3509         uint32_t ldata;
3510         int i;
3511
3512         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
3513                 ldata = *src;
3514                 ldata = le32_to_cpu(ldata);
3515                 *dest = ldata;
3516                 src++;
3517                 dest++;
3518         }
3519 }
3520
3521 int
3522 lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3523                          struct lpfc_dmabuf *mp)
3524 {
3525         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
3526            later */
3527         spin_lock_irq(&phba->hbalock);
3528         list_add_tail(&mp->list, &pring->postbufq);
3529         pring->postbufq_cnt++;
3530         spin_unlock_irq(&phba->hbalock);
3531         return 0;
3532 }
3533
3534 uint32_t
3535 lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
3536 {
3537         spin_lock_irq(&phba->hbalock);
3538         phba->buffer_tag_count++;
3539         /*
3540          * Always set the QUE_BUFTAG_BIT to distiguish between
3541          * a tag assigned by HBQ.
3542          */
3543         phba->buffer_tag_count |= QUE_BUFTAG_BIT;
3544         spin_unlock_irq(&phba->hbalock);
3545         return phba->buffer_tag_count;
3546 }
3547
3548 struct lpfc_dmabuf *
3549 lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3550                         uint32_t tag)
3551 {
3552         struct lpfc_dmabuf *mp, *next_mp;
3553         struct list_head *slp = &pring->postbufq;
3554
3555         /* Search postbufq, from the begining, looking for a match on tag */
3556         spin_lock_irq(&phba->hbalock);
3557         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
3558                 if (mp->buffer_tag == tag) {
3559                         list_del_init(&mp->list);
3560                         pring->postbufq_cnt--;
3561                         spin_unlock_irq(&phba->hbalock);
3562                         return mp;
3563                 }
3564         }
3565
3566         spin_unlock_irq(&phba->hbalock);
3567         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3568                         "0410 Cannot find virtual addr for buffer tag on "
3569                         "ring %d Data x%lx x%p x%p x%x\n",
3570                         pring->ringno, (unsigned long) tag,
3571                         slp->next, slp->prev, pring->postbufq_cnt);
3572
3573         return NULL;
3574 }
3575
3576 struct lpfc_dmabuf *
3577 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3578                          dma_addr_t phys)
3579 {
3580         struct lpfc_dmabuf *mp, *next_mp;
3581         struct list_head *slp = &pring->postbufq;
3582
3583         /* Search postbufq, from the begining, looking for a match on phys */
3584         spin_lock_irq(&phba->hbalock);
3585         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
3586                 if (mp->phys == phys) {
3587                         list_del_init(&mp->list);
3588                         pring->postbufq_cnt--;
3589                         spin_unlock_irq(&phba->hbalock);
3590                         return mp;
3591                 }
3592         }
3593
3594         spin_unlock_irq(&phba->hbalock);
3595         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3596                         "0410 Cannot find virtual addr for mapped buf on "
3597                         "ring %d Data x%llx x%p x%p x%x\n",
3598                         pring->ringno, (unsigned long long)phys,
3599                         slp->next, slp->prev, pring->postbufq_cnt);
3600         return NULL;
3601 }
3602
3603 static void
3604 lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3605                         struct lpfc_iocbq *rspiocb)
3606 {
3607         IOCB_t *irsp = &rspiocb->iocb;
3608         uint16_t abort_iotag, abort_context;
3609         struct lpfc_iocbq *abort_iocb;
3610         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
3611
3612         abort_iocb = NULL;
3613
3614         if (irsp->ulpStatus) {
3615                 abort_context = cmdiocb->iocb.un.acxri.abortContextTag;
3616                 abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag;
3617
3618                 spin_lock_irq(&phba->hbalock);
3619                 if (abort_iotag != 0 && abort_iotag <= phba->sli.last_iotag)
3620                         abort_iocb = phba->sli.iocbq_lookup[abort_iotag];
3621
3622                 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_SLI,
3623                                 "0327 Cannot abort els iocb %p "
3624                                 "with tag %x context %x, abort status %x, "
3625                                 "abort code %x\n",
3626                                 abort_iocb, abort_iotag, abort_context,
3627                                 irsp->ulpStatus, irsp->un.ulpWord[4]);
3628
3629                 /*
3630                  *  If the iocb is not found in Firmware queue the iocb
3631                  *  might have completed already. Do not free it again.
3632                  */
3633                 if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
3634                         spin_unlock_irq(&phba->hbalock);
3635                         lpfc_sli_release_iocbq(phba, cmdiocb);
3636                         return;
3637                 }
3638                 /*
3639                  * make sure we have the right iocbq before taking it
3640                  * off the txcmplq and try to call completion routine.
3641                  */
3642                 if (!abort_iocb ||
3643                     abort_iocb->iocb.ulpContext != abort_context ||
3644                     (abort_iocb->iocb_flag & LPFC_DRIVER_ABORTED) == 0)
3645                         spin_unlock_irq(&phba->hbalock);
3646                 else {
3647                         list_del_init(&abort_iocb->list);
3648                         pring->txcmplq_cnt--;
3649                         spin_unlock_irq(&phba->hbalock);
3650
3651                         /* Firmware could still be in progress of DMAing
3652                          * payload, so don't free data buffer till after
3653                          * a hbeat.
3654                          */
3655                         abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE;
3656
3657                         abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED;
3658                         abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
3659                         abort_iocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
3660                         (abort_iocb->iocb_cmpl)(phba, abort_iocb, abort_iocb);
3661                 }
3662         }
3663
3664         lpfc_sli_release_iocbq(phba, cmdiocb);
3665         return;
3666 }
3667
3668 static void
3669 lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3670                      struct lpfc_iocbq *rspiocb)
3671 {
3672         IOCB_t *irsp = &rspiocb->iocb;
3673
3674         /* ELS cmd tag <ulpIoTag> completes */
3675         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
3676                         "0133 Ignoring ELS cmd tag x%x completion Data: "
3677                         "x%x x%x x%x\n",
3678                         irsp->ulpIoTag, irsp->ulpStatus,
3679                         irsp->un.ulpWord[4], irsp->ulpTimeout);
3680         if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR)
3681                 lpfc_ct_free_iocb(phba, cmdiocb);
3682         else
3683                 lpfc_els_free_iocb(phba, cmdiocb);
3684         return;
3685 }
3686
3687 int
3688 lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
3689                            struct lpfc_iocbq *cmdiocb)
3690 {
3691         struct lpfc_vport *vport = cmdiocb->vport;
3692         struct lpfc_iocbq *abtsiocbp;
3693         IOCB_t *icmd = NULL;
3694         IOCB_t *iabt = NULL;
3695         int retval = IOCB_ERROR;
3696
3697         /*
3698          * There are certain command types we don't want to abort.  And we
3699          * don't want to abort commands that are already in the process of
3700          * being aborted.
3701          */
3702         icmd = &cmdiocb->iocb;
3703         if (icmd->ulpCommand == CMD_ABORT_XRI_CN ||
3704             icmd->ulpCommand == CMD_CLOSE_XRI_CN ||
3705             (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0)
3706                 return 0;
3707
3708         /* If we're unloading, don't abort iocb on the ELS ring, but change the
3709          * callback so that nothing happens when it finishes.
3710          */
3711         if ((vport->load_flag & FC_UNLOADING) &&
3712             (pring->ringno == LPFC_ELS_RING)) {
3713                 if (cmdiocb->iocb_flag & LPFC_IO_FABRIC)
3714                         cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl;
3715                 else
3716                         cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl;
3717                 goto abort_iotag_exit;
3718         }
3719
3720         /* issue ABTS for this IOCB based on iotag */
3721         abtsiocbp = __lpfc_sli_get_iocbq(phba);
3722         if (abtsiocbp == NULL)
3723                 return 0;
3724
3725         /* This signals the response to set the correct status
3726          * before calling the completion handler.
3727          */
3728         cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED;
3729
3730         iabt = &abtsiocbp->iocb;
3731         iabt->un.acxri.abortType = ABORT_TYPE_ABTS;
3732         iabt->un.acxri.abortContextTag = icmd->ulpContext;
3733         iabt->un.acxri.abortIoTag = icmd->ulpIoTag;
3734         iabt->ulpLe = 1;
3735         iabt->ulpClass = icmd->ulpClass;
3736
3737         if (phba->link_state >= LPFC_LINK_UP)
3738                 iabt->ulpCommand = CMD_ABORT_XRI_CN;
3739         else
3740                 iabt->ulpCommand = CMD_CLOSE_XRI_CN;
3741
3742         abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl;
3743
3744         lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
3745                          "0339 Abort xri x%x, original iotag x%x, "
3746                          "abort cmd iotag x%x\n",
3747                          iabt->un.acxri.abortContextTag,
3748                          iabt->un.acxri.abortIoTag, abtsiocbp->iotag);
3749         retval = __lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0);
3750
3751 abort_iotag_exit:
3752         /*
3753          * Caller to this routine should check for IOCB_ERROR
3754          * and handle it properly.  This routine no longer removes
3755          * iocb off txcmplq and call compl in case of IOCB_ERROR.
3756          */
3757         return retval;
3758 }
3759
3760 static int
3761 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport,
3762                            uint16_t tgt_id, uint64_t lun_id,
3763                            lpfc_ctx_cmd ctx_cmd)
3764 {
3765         struct lpfc_scsi_buf *lpfc_cmd;
3766         int rc = 1;
3767
3768         if (!(iocbq->iocb_flag &  LPFC_IO_FCP))
3769                 return rc;
3770
3771         if (iocbq->vport != vport)
3772                 return rc;
3773
3774         lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
3775
3776         if (lpfc_cmd->pCmd == NULL)
3777                 return rc;
3778
3779         switch (ctx_cmd) {
3780         case LPFC_CTX_LUN:
3781                 if ((lpfc_cmd->rdata->pnode) &&
3782                     (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id) &&
3783                     (scsilun_to_int(&lpfc_cmd->fcp_cmnd->fcp_lun) == lun_id))
3784                         rc = 0;
3785                 break;
3786         case LPFC_CTX_TGT:
3787                 if ((lpfc_cmd->rdata->pnode) &&
3788                     (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id))
3789                         rc = 0;
3790                 break;
3791         case LPFC_CTX_HOST:
3792                 rc = 0;
3793                 break;
3794         default:
3795                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
3796                         __func__, ctx_cmd);
3797                 break;
3798         }
3799
3800         return rc;
3801 }
3802
3803 int
3804 lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
3805                   lpfc_ctx_cmd ctx_cmd)
3806 {
3807         struct lpfc_hba *phba = vport->phba;
3808         struct lpfc_iocbq *iocbq;
3809         int sum, i;
3810
3811         for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
3812                 iocbq = phba->sli.iocbq_lookup[i];
3813
3814                 if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id,
3815                                                 ctx_cmd) == 0)
3816                         sum++;
3817         }
3818
3819         return sum;
3820 }
3821
3822 void
3823 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
3824                         struct lpfc_iocbq *rspiocb)
3825 {
3826         lpfc_sli_release_iocbq(phba, cmdiocb);
3827         return;
3828 }
3829
3830 int
3831 lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
3832                     uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd)
3833 {
3834         struct lpfc_hba *phba = vport->phba;
3835         struct lpfc_iocbq *iocbq;
3836         struct lpfc_iocbq *abtsiocb;
3837         IOCB_t *cmd = NULL;
3838         int errcnt = 0, ret_val = 0;
3839         int i;
3840
3841         for (i = 1; i <= phba->sli.last_iotag; i++) {
3842                 iocbq = phba->sli.iocbq_lookup[i];
3843
3844                 if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
3845                                                abort_cmd) != 0)
3846                         continue;
3847
3848                 /* issue ABTS for this IOCB based on iotag */
3849                 abtsiocb = lpfc_sli_get_iocbq(phba);
3850                 if (abtsiocb == NULL) {
3851                         errcnt++;
3852                         continue;
3853                 }
3854
3855                 cmd = &iocbq->iocb;
3856                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
3857                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
3858                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
3859                 abtsiocb->iocb.ulpLe = 1;
3860                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
3861                 abtsiocb->vport = phba->pport;
3862
3863                 if (lpfc_is_link_up(phba))
3864                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
3865                 else
3866                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
3867
3868                 /* Setup callback routine and issue the command. */
3869                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
3870                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
3871                 if (ret_val == IOCB_ERROR) {
3872                         lpfc_sli_release_iocbq(phba, abtsiocb);
3873                         errcnt++;
3874                         continue;
3875                 }
3876         }
3877
3878         return errcnt;
3879 }
3880
3881 static void
3882 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
3883                         struct lpfc_iocbq *cmdiocbq,
3884                         struct lpfc_iocbq *rspiocbq)
3885 {
3886         wait_queue_head_t *pdone_q;
3887         unsigned long iflags;
3888
3889         spin_lock_irqsave(&phba->hbalock, iflags);
3890         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
3891         if (cmdiocbq->context2 && rspiocbq)
3892                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
3893                        &rspiocbq->iocb, sizeof(IOCB_t));
3894
3895         pdone_q = cmdiocbq->context_un.wait_queue;
3896         if (pdone_q)
3897                 wake_up(pdone_q);
3898         spin_unlock_irqrestore(&phba->hbalock, iflags);
3899         return;
3900 }
3901
3902 /*
3903  * Issue the caller's iocb and wait for its completion, but no longer than the
3904  * caller's timeout.  Note that iocb_flags is cleared before the
3905  * lpfc_sli_issue_call since the wake routine sets a unique value and by
3906  * definition this is a wait function.
3907  */
3908
3909 int
3910 lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
3911                          struct lpfc_sli_ring *pring,
3912                          struct lpfc_iocbq *piocb,
3913                          struct lpfc_iocbq *prspiocbq,
3914                          uint32_t timeout)
3915 {
3916         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3917         long timeleft, timeout_req = 0;
3918         int retval = IOCB_SUCCESS;
3919         uint32_t creg_val;
3920
3921         /*
3922          * If the caller has provided a response iocbq buffer, then context2
3923          * is NULL or its an error.
3924          */
3925         if (prspiocbq) {
3926                 if (piocb->context2)
3927                         return IOCB_ERROR;
3928                 piocb->context2 = prspiocbq;
3929         }
3930
3931         piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
3932         piocb->context_un.wait_queue = &done_q;
3933         piocb->iocb_flag &= ~LPFC_IO_WAKE;
3934
3935         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3936                 creg_val = readl(phba->HCregaddr);
3937                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
3938                 writel(creg_val, phba->HCregaddr);
3939                 readl(phba->HCregaddr); /* flush */
3940         }
3941
3942         retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
3943         if (retval == IOCB_SUCCESS) {
3944                 timeout_req = timeout * HZ;
3945                 timeleft = wait_event_timeout(done_q,
3946                                 piocb->iocb_flag & LPFC_IO_WAKE,
3947                                 timeout_req);
3948
3949                 if (piocb->iocb_flag & LPFC_IO_WAKE) {
3950                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3951                                         "0331 IOCB wake signaled\n");
3952                 } else if (timeleft == 0) {
3953                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3954                                         "0338 IOCB wait timeout error - no "
3955                                         "wake response Data x%x\n", timeout);
3956                         retval = IOCB_TIMEDOUT;
3957                 } else {
3958                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3959                                         "0330 IOCB wake NOT set, "
3960                                         "Data x%x x%lx\n",
3961                                         timeout, (timeleft / jiffies));
3962                         retval = IOCB_TIMEDOUT;
3963                 }
3964         } else {
3965                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3966                                 ":0332 IOCB wait issue failed, Data x%x\n",
3967                                 retval);
3968                 retval = IOCB_ERROR;
3969         }
3970
3971         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3972                 creg_val = readl(phba->HCregaddr);
3973                 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
3974                 writel(creg_val, phba->HCregaddr);
3975                 readl(phba->HCregaddr); /* flush */
3976         }
3977
3978         if (prspiocbq)
3979                 piocb->context2 = NULL;
3980
3981         piocb->context_un.wait_queue = NULL;
3982         piocb->iocb_cmpl = NULL;
3983         return retval;
3984 }
3985
3986 int
3987 lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
3988                          uint32_t timeout)
3989 {
3990         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3991         int retval;
3992         unsigned long flag;
3993
3994         /* The caller must leave context1 empty. */
3995         if (pmboxq->context1)
3996                 return MBX_NOT_FINISHED;
3997
3998         pmboxq->mbox_flag &= ~LPFC_MBX_WAKE;
3999         /* setup wake call as IOCB callback */
4000         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
4001         /* setup context field to pass wait_queue pointer to wake function  */
4002         pmboxq->context1 = &done_q;
4003
4004         /* now issue the command */
4005         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4006
4007         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
4008                 wait_event_interruptible_timeout(done_q,
4009                                 pmboxq->mbox_flag & LPFC_MBX_WAKE,
4010                                 timeout * HZ);
4011
4012                 spin_lock_irqsave(&phba->hbalock, flag);
4013                 pmboxq->context1 = NULL;
4014                 /*
4015                  * if LPFC_MBX_WAKE flag is set the mailbox is completed
4016                  * else do not free the resources.
4017                  */
4018                 if (pmboxq->mbox_flag & LPFC_MBX_WAKE)
4019                         retval = MBX_SUCCESS;
4020                 else {
4021                         retval = MBX_TIMEOUT;
4022                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4023                 }
4024                 spin_unlock_irqrestore(&phba->hbalock, flag);
4025         }
4026
4027         return retval;
4028 }
4029
4030 int
4031 lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba)
4032 {
4033         struct lpfc_vport *vport = phba->pport;
4034         int i = 0;
4035         uint32_t ha_copy;
4036
4037         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !vport->stopped) {
4038                 if (i++ > LPFC_MBOX_TMO * 1000)
4039                         return 1;
4040
4041                 /*
4042                  * Call lpfc_sli_handle_mb_event only if a mailbox cmd
4043                  * did finish. This way we won't get the misleading
4044                  * "Stray Mailbox Interrupt" message.
4045                  */
4046                 spin_lock_irq(&phba->hbalock);
4047                 ha_copy = phba->work_ha;
4048                 phba->work_ha &= ~HA_MBATT;
4049                 spin_unlock_irq(&phba->hbalock);
4050
4051                 if (ha_copy & HA_MBATT)
4052                         if (lpfc_sli_handle_mb_event(phba) == 0)
4053                                 i = 0;
4054
4055                 msleep(1);
4056         }
4057
4058         return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0;
4059 }
4060
4061 irqreturn_t
4062 lpfc_intr_handler(int irq, void *dev_id)
4063 {
4064         struct lpfc_hba  *phba;
4065         uint32_t ha_copy;
4066         uint32_t work_ha_copy;
4067         unsigned long status;
4068         uint32_t control;
4069
4070         MAILBOX_t *mbox, *pmbox;
4071         struct lpfc_vport *vport;
4072         struct lpfc_nodelist *ndlp;
4073         struct lpfc_dmabuf *mp;
4074         LPFC_MBOXQ_t *pmb;
4075         int rc;
4076
4077         /*
4078          * Get the driver's phba structure from the dev_id and
4079          * assume the HBA is not interrupting.
4080          */
4081         phba = (struct lpfc_hba *) dev_id;
4082
4083         if (unlikely(!phba))
4084                 return IRQ_NONE;
4085
4086         /* If the pci channel is offline, ignore all the interrupts. */
4087         if (unlikely(pci_channel_offline(phba->pcidev)))
4088                 return IRQ_NONE;
4089
4090         phba->sli.slistat.sli_intr++;
4091
4092         /*
4093          * Call the HBA to see if it is interrupting.  If not, don't claim
4094          * the interrupt
4095          */
4096
4097         /* Ignore all interrupts during initialization. */
4098         if (unlikely(phba->link_state < LPFC_LINK_DOWN))
4099                 return IRQ_NONE;
4100
4101         /*
4102          * Read host attention register to determine interrupt source
4103          * Clear Attention Sources, except Error Attention (to
4104          * preserve status) and Link Attention
4105          */
4106         spin_lock(&phba->hbalock);
4107         ha_copy = readl(phba->HAregaddr);
4108         /* If somebody is waiting to handle an eratt don't process it
4109          * here.  The brdkill function will do this.
4110          */
4111         if (phba->link_flag & LS_IGNORE_ERATT)
4112                 ha_copy &= ~HA_ERATT;
4113         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
4114         readl(phba->HAregaddr); /* flush */
4115         spin_unlock(&phba->hbalock);
4116
4117         if (unlikely(!ha_copy))
4118                 return IRQ_NONE;
4119
4120         work_ha_copy = ha_copy & phba->work_ha_mask;
4121
4122         if (unlikely(work_ha_copy)) {
4123                 if (work_ha_copy & HA_LATT) {
4124                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
4125                                 /*
4126                                  * Turn off Link Attention interrupts
4127                                  * until CLEAR_LA done
4128                                  */
4129                                 spin_lock(&phba->hbalock);
4130                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
4131                                 control = readl(phba->HCregaddr);
4132                                 control &= ~HC_LAINT_ENA;
4133                                 writel(control, phba->HCregaddr);
4134                                 readl(phba->HCregaddr); /* flush */
4135                                 spin_unlock(&phba->hbalock);
4136                         }
4137                         else
4138                                 work_ha_copy &= ~HA_LATT;
4139                 }
4140
4141                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
4142                         /*
4143                          * Turn off Slow Rings interrupts, LPFC_ELS_RING is
4144                          * the only slow ring.
4145                          */
4146                         status = (work_ha_copy &
4147                                 (HA_RXMASK  << (4*LPFC_ELS_RING)));
4148                         status >>= (4*LPFC_ELS_RING);
4149                         if (status & HA_RXMASK) {
4150                                 spin_lock(&phba->hbalock);
4151                                 control = readl(phba->HCregaddr);
4152
4153                                 lpfc_debugfs_slow_ring_trc(phba,
4154                                 "ISR slow ring:   ctl:x%x stat:x%x isrcnt:x%x",
4155                                 control, status,
4156                                 (uint32_t)phba->sli.slistat.sli_intr);
4157
4158                                 if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
4159                                         lpfc_debugfs_slow_ring_trc(phba,
4160                                                 "ISR Disable ring:"
4161                                                 "pwork:x%x hawork:x%x wait:x%x",
4162                                                 phba->work_ha, work_ha_copy,
4163                                                 (uint32_t)((unsigned long)
4164                                                 &phba->work_waitq));
4165
4166                                         control &=
4167                                             ~(HC_R0INT_ENA << LPFC_ELS_RING);
4168                                         writel(control, phba->HCregaddr);
4169                                         readl(phba->HCregaddr); /* flush */
4170                                 }
4171                                 else {
4172                                         lpfc_debugfs_slow_ring_trc(phba,
4173                                                 "ISR slow ring:   pwork:"
4174                                                 "x%x hawork:x%x wait:x%x",
4175                                                 phba->work_ha, work_ha_copy,
4176                                                 (uint32_t)((unsigned long)
4177                                                 &phba->work_waitq));
4178                                 }
4179                                 spin_unlock(&phba->hbalock);
4180                         }
4181                 }
4182
4183                 if (work_ha_copy & HA_ERATT) {
4184                         /*
4185                          * There was a link/board error.  Read the
4186                          * status register to retrieve the error event
4187                          * and process it.
4188                          */
4189                         phba->sli.slistat.err_attn_event++;
4190                         /* Save status info */
4191                         phba->work_hs = readl(phba->HSregaddr);
4192                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
4193                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
4194
4195                         /* Clear Chip error bit */
4196                         writel(HA_ERATT, phba->HAregaddr);
4197                         readl(phba->HAregaddr); /* flush */
4198                         phba->pport->stopped = 1;
4199                 }
4200
4201                 spin_lock(&phba->hbalock);
4202                 if ((work_ha_copy & HA_MBATT) &&
4203                     (phba->sli.mbox_active)) {
4204                         pmb = phba->sli.mbox_active;
4205                         pmbox = &pmb->mb;
4206                         mbox = &phba->slim2p->mbx;
4207                         vport = pmb->vport;
4208
4209                         /* First check out the status word */
4210                         lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t));
4211                         if (pmbox->mbxOwner != OWN_HOST) {
4212                                 spin_unlock(&phba->hbalock);
4213                                 /*
4214                                  * Stray Mailbox Interrupt, mbxCommand <cmd>
4215                                  * mbxStatus <status>
4216                                  */
4217                                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
4218                                                 LOG_SLI,
4219                                                 "(%d):0304 Stray Mailbox "
4220                                                 "Interrupt mbxCommand x%x "
4221                                                 "mbxStatus x%x\n",
4222                                                 (vport ? vport->vpi : 0),
4223                                                 pmbox->mbxCommand,
4224                                                 pmbox->mbxStatus);
4225                                 /* clear mailbox attention bit */
4226                                 work_ha_copy &= ~HA_MBATT;
4227                         } else {
4228                                 phba->sli.mbox_active = NULL;
4229                                 spin_unlock(&phba->hbalock);
4230                                 phba->last_completion_time = jiffies;
4231                                 del_timer(&phba->sli.mbox_tmo);
4232                                 if (pmb->mbox_cmpl) {
4233                                         lpfc_sli_pcimem_bcopy(mbox, pmbox,
4234                                                         MAILBOX_CMD_SIZE);
4235                                 }
4236                                 if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
4237                                         pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
4238
4239                                         lpfc_debugfs_disc_trc(vport,
4240                                                 LPFC_DISC_TRC_MBOX_VPORT,
4241                                                 "MBOX dflt rpi: : "
4242                                                 "status:x%x rpi:x%x",
4243                                                 (uint32_t)pmbox->mbxStatus,
4244                                                 pmbox->un.varWords[0], 0);
4245
4246                                         if (!pmbox->mbxStatus) {
4247                                                 mp = (struct lpfc_dmabuf *)
4248                                                         (pmb->context1);
4249                                                 ndlp = (struct lpfc_nodelist *)
4250                                                         pmb->context2;
4251
4252                                                 /* Reg_LOGIN of dflt RPI was
4253                                                  * successful. new lets get
4254                                                  * rid of the RPI using the
4255                                                  * same mbox buffer.
4256                                                  */
4257                                                 lpfc_unreg_login(phba,
4258                                                         vport->vpi,
4259                                                         pmbox->un.varWords[0],
4260                                                         pmb);
4261                                                 pmb->mbox_cmpl =
4262                                                         lpfc_mbx_cmpl_dflt_rpi;
4263                                                 pmb->context1 = mp;
4264                                                 pmb->context2 = ndlp;
4265                                                 pmb->vport = vport;
4266                                                 rc = lpfc_sli_issue_mbox(phba,
4267                                                                 pmb,
4268                                                                 MBX_NOWAIT);
4269                                                 if (rc != MBX_BUSY)
4270                                                         lpfc_printf_log(phba,
4271                                                         KERN_ERR,
4272                                                         LOG_MBOX | LOG_SLI,
4273                                                         "0306 rc should have"
4274                                                         "been MBX_BUSY");
4275                                                 goto send_current_mbox;
4276                                         }
4277                                 }
4278                                 spin_lock(&phba->pport->work_port_lock);
4279                                 phba->pport->work_port_events &=
4280                                         ~WORKER_MBOX_TMO;
4281                                 spin_unlock(&phba->pport->work_port_lock);
4282                                 lpfc_mbox_cmpl_put(phba, pmb);
4283                         }
4284                 } else
4285                         spin_unlock(&phba->hbalock);
4286                 if ((work_ha_copy & HA_MBATT) &&
4287                     (phba->sli.mbox_active == NULL)) {
4288 send_current_mbox:
4289                         /* Process next mailbox command if there is one */
4290                         do {
4291                                 rc = lpfc_sli_issue_mbox(phba, NULL,
4292                                                          MBX_NOWAIT);
4293                         } while (rc == MBX_NOT_FINISHED);
4294                         if (rc != MBX_SUCCESS)
4295                                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
4296                                                 LOG_SLI, "0349 rc should be "
4297                                                 "MBX_SUCCESS");
4298                 }
4299
4300                 spin_lock(&phba->hbalock);
4301                 phba->work_ha |= work_ha_copy;
4302                 spin_unlock(&phba->hbalock);
4303                 lpfc_worker_wake_up(phba);
4304         }
4305
4306         ha_copy &= ~(phba->work_ha_mask);
4307
4308         /*
4309          * Process all events on FCP ring.  Take the optimized path for
4310          * FCP IO.  Any other IO is slow path and is handled by
4311          * the worker thread.
4312          */
4313         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
4314         status >>= (4*LPFC_FCP_RING);
4315         if (status & HA_RXMASK)
4316                 lpfc_sli_handle_fast_ring_event(phba,
4317                                                 &phba->sli.ring[LPFC_FCP_RING],
4318                                                 status);
4319
4320         if (phba->cfg_multi_ring_support == 2) {
4321                 /*
4322                  * Process all events on extra ring.  Take the optimized path
4323                  * for extra ring IO.  Any other IO is slow path and is handled
4324                  * by the worker thread.
4325                  */
4326                 status = (ha_copy & (HA_RXMASK  << (4*LPFC_EXTRA_RING)));
4327                 status >>= (4*LPFC_EXTRA_RING);
4328                 if (status & HA_RXMASK) {
4329                         lpfc_sli_handle_fast_ring_event(phba,
4330                                         &phba->sli.ring[LPFC_EXTRA_RING],
4331                                         status);
4332                 }
4333         }
4334         return IRQ_HANDLED;
4335
4336 } /* lpfc_intr_handler */