drivers/scsi/lpfc/lpfc_sli.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2006 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
  42 /*
  43  * Define macro to log: Mailbox command x%x cannot issue Data
  44  * This allows multiple uses of lpfc_msgBlk0311
  45  * w/o perturbing log msg utility.
  46  */
  47 #define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \
  48                         lpfc_printf_log(phba, \
  49                                 KERN_INFO, \
  50                                 LOG_MBOX | LOG_SLI, \
  51                                 "%d:0311 Mailbox command x%x cannot issue " \
  52                                 "Data: x%x x%x x%x\n", \
  53                                 phba->brd_no, \
  54                                 mb->mbxCommand,         \
  55                                 phba->hba_state,        \
  56                                 psli->sli_flag, \
  57                                 flag);
  58
  59
  60 /* There are only four IOCB completion types. */
  61 typedef enum _lpfc_iocb_type {
  62         LPFC_UNKNOWN_IOCB,
  63         LPFC_UNSOL_IOCB,
  64         LPFC_SOL_IOCB,
  65         LPFC_ABORT_IOCB
  66 } lpfc_iocb_type;
  67
  68 struct lpfc_iocbq *
  69 lpfc_sli_get_iocbq(struct lpfc_hba * phba)
  70 {
  71         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
  72         struct lpfc_iocbq * iocbq = NULL;
  73
  74         list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
  75         return iocbq;
  76 }
  77
  78 void
  79 lpfc_sli_release_iocbq(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
  80 {
  81         size_t start_clean = (size_t)(&((struct lpfc_iocbq *)NULL)->iocb);
  82
  83         /*
  84          * Clean all volatile data fields, preserve iotag and node struct.
  85          */
  86         memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
  87         list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
  88 }
  89
  90 /*
  91  * Translate the iocb command to an iocb command type used to decide the final
  92  * disposition of each completed IOCB.
  93  */
  94 static lpfc_iocb_type
  95 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
  96 {
  97         lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
  98
  99         if (iocb_cmnd > CMD_MAX_IOCB_CMD)
 100                 return 0;
 101
 102         switch (iocb_cmnd) {
 103         case CMD_XMIT_SEQUENCE_CR:
 104         case CMD_XMIT_SEQUENCE_CX:
 105         case CMD_XMIT_BCAST_CN:
 106         case CMD_XMIT_BCAST_CX:
 107         case CMD_ELS_REQUEST_CR:
 108         case CMD_ELS_REQUEST_CX:
 109         case CMD_CREATE_XRI_CR:
 110         case CMD_CREATE_XRI_CX:
 111         case CMD_GET_RPI_CN:
 112         case CMD_XMIT_ELS_RSP_CX:
 113         case CMD_GET_RPI_CR:
 114         case CMD_FCP_IWRITE_CR:
 115         case CMD_FCP_IWRITE_CX:
 116         case CMD_FCP_IREAD_CR:
 117         case CMD_FCP_IREAD_CX:
 118         case CMD_FCP_ICMND_CR:
 119         case CMD_FCP_ICMND_CX:
 120         case CMD_FCP_TSEND_CX:
 121         case CMD_FCP_TRSP_CX:
 122         case CMD_FCP_TRECEIVE_CX:
 123         case CMD_FCP_AUTO_TRSP_CX:
 124         case CMD_ADAPTER_MSG:
 125         case CMD_ADAPTER_DUMP:
 126         case CMD_XMIT_SEQUENCE64_CR:
 127         case CMD_XMIT_SEQUENCE64_CX:
 128         case CMD_XMIT_BCAST64_CN:
 129         case CMD_XMIT_BCAST64_CX:
 130         case CMD_ELS_REQUEST64_CR:
 131         case CMD_ELS_REQUEST64_CX:
 132         case CMD_FCP_IWRITE64_CR:
 133         case CMD_FCP_IWRITE64_CX:
 134         case CMD_FCP_IREAD64_CR:
 135         case CMD_FCP_IREAD64_CX:
 136         case CMD_FCP_ICMND64_CR:
 137         case CMD_FCP_ICMND64_CX:
 138         case CMD_FCP_TSEND64_CX:
 139         case CMD_FCP_TRSP64_CX:
 140         case CMD_FCP_TRECEIVE64_CX:
 141         case CMD_GEN_REQUEST64_CR:
 142         case CMD_GEN_REQUEST64_CX:
 143         case CMD_XMIT_ELS_RSP64_CX:
 144                 type = LPFC_SOL_IOCB;
 145                 break;
 146         case CMD_ABORT_XRI_CN:
 147         case CMD_ABORT_XRI_CX:
 148         case CMD_CLOSE_XRI_CN:
 149         case CMD_CLOSE_XRI_CX:
 150         case CMD_XRI_ABORTED_CX:
 151         case CMD_ABORT_MXRI64_CN:
 152                 type = LPFC_ABORT_IOCB;
 153                 break;
 154         case CMD_RCV_SEQUENCE_CX:
 155         case CMD_RCV_ELS_REQ_CX:
 156         case CMD_RCV_SEQUENCE64_CX:
 157         case CMD_RCV_ELS_REQ64_CX:
 158                 type = LPFC_UNSOL_IOCB;
 159                 break;
 160         default:
 161                 type = LPFC_UNKNOWN_IOCB;
 162                 break;
 163         }
 164
 165         return type;
 166 }
 167
 168 static int
 169 lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb)
 170 {
 171         struct lpfc_sli *psli = &phba->sli;
 172         MAILBOX_t *pmbox = &pmb->mb;
 173         int i, rc;
 174
 175         for (i = 0; i < psli->num_rings; i++) {
 176                 phba->hba_state = LPFC_INIT_MBX_CMDS;
 177                 lpfc_config_ring(phba, i, pmb);
 178                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 179                 if (rc != MBX_SUCCESS) {
 180                         lpfc_printf_log(phba,
 181                                         KERN_ERR,
 182                                         LOG_INIT,
 183                                         "%d:0446 Adapter failed to init, "
 184                                         "mbxCmd x%x CFG_RING, mbxStatus x%x, "
 185                                         "ring %d\n",
 186                                         phba->brd_no,
 187                                         pmbox->mbxCommand,
 188                                         pmbox->mbxStatus,
 189                                         i);
 190                         phba->hba_state = LPFC_HBA_ERROR;
 191                         return -ENXIO;
 192                 }
 193         }
 194         return 0;
 195 }
 196
 197 static int
 198 lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba,
 199                         struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb)
 200 {
 201         list_add_tail(&piocb->list, &pring->txcmplq);
 202         pring->txcmplq_cnt++;
 203         if (unlikely(pring->ringno == LPFC_ELS_RING))
 204                 mod_timer(&phba->els_tmofunc,
 205                                         jiffies + HZ * (phba->fc_ratov << 1));
 206
 207         return (0);
 208 }
 209
 210 static struct lpfc_iocbq *
 211 lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
 212 {
 213         struct list_head *dlp;
 214         struct lpfc_iocbq *cmd_iocb;
 215
 216         dlp = &pring->txq;
 217         cmd_iocb = NULL;
 218         list_remove_head((&pring->txq), cmd_iocb,
 219                          struct lpfc_iocbq,
 220                          list);
 221         if (cmd_iocb) {
 222                 /* If the first ptr is not equal to the list header,
 223                  * deque the IOCBQ_t and return it.
 224                  */
 225                 pring->txq_cnt--;
 226         }
 227         return (cmd_iocb);
 228 }
 229
 230 static IOCB_t *
 231 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 232 {
 233         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
 234         uint32_t  max_cmd_idx = pring->numCiocb;
 235         IOCB_t *iocb = NULL;
 236
 237         if ((pring->next_cmdidx == pring->cmdidx) &&
 238            (++pring->next_cmdidx >= max_cmd_idx))
 239                 pring->next_cmdidx = 0;
 240
 241         if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
 242
 243                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
 244
 245                 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
 246                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 247                                         "%d:0315 Ring %d issue: portCmdGet %d "
 248                                         "is bigger then cmd ring %d\n",
 249                                         phba->brd_no, pring->ringno,
 250                                         pring->local_getidx, max_cmd_idx);
 251
 252                         phba->hba_state = LPFC_HBA_ERROR;
 253                         /*
 254                          * All error attention handlers are posted to
 255                          * worker thread
 256                          */
 257                         phba->work_ha |= HA_ERATT;
 258                         phba->work_hs = HS_FFER3;
 259                         if (phba->work_wait)
 260                                 wake_up(phba->work_wait);
 261
 262                         return NULL;
 263                 }
 264
 265                 if (pring->local_getidx == pring->next_cmdidx)
 266                         return NULL;
 267         }
 268
 269         iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx);
 270
 271         return iocb;
 272 }
 273
 274 uint16_t
 275 lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
 276 {
 277         struct lpfc_iocbq ** new_arr;
 278         struct lpfc_iocbq ** old_arr;
 279         size_t new_len;
 280         struct lpfc_sli *psli = &phba->sli;
 281         uint16_t iotag;
 282
 283         spin_lock_irq(phba->host->host_lock);
 284         iotag = psli->last_iotag;
 285         if(++iotag < psli->iocbq_lookup_len) {
 286                 psli->last_iotag = iotag;
 287                 psli->iocbq_lookup[iotag] = iocbq;
 288                 spin_unlock_irq(phba->host->host_lock);
 289                 iocbq->iotag = iotag;
 290                 return iotag;
 291         }
 292         else if (psli->iocbq_lookup_len < (0xffff
 293                                            - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
 294                 new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
 295                 spin_unlock_irq(phba->host->host_lock);
 296                 new_arr = kmalloc(new_len * sizeof (struct lpfc_iocbq *),
 297                                   GFP_KERNEL);
 298                 if (new_arr) {
 299                         memset((char *)new_arr, 0,
 300                                new_len * sizeof (struct lpfc_iocbq *));
 301                         spin_lock_irq(phba->host->host_lock);
 302                         old_arr = psli->iocbq_lookup;
 303                         if (new_len <= psli->iocbq_lookup_len) {
 304                                 /* highly unprobable case */
 305                                 kfree(new_arr);
 306                                 iotag = psli->last_iotag;
 307                                 if(++iotag < psli->iocbq_lookup_len) {
 308                                         psli->last_iotag = iotag;
 309                                         psli->iocbq_lookup[iotag] = iocbq;
 310                                         spin_unlock_irq(phba->host->host_lock);
 311                                         iocbq->iotag = iotag;
 312                                         return iotag;
 313                                 }
 314                                 spin_unlock_irq(phba->host->host_lock);
 315                                 return 0;
 316                         }
 317                         if (psli->iocbq_lookup)
 318                                 memcpy(new_arr, old_arr,
 319                                        ((psli->last_iotag  + 1) *
 320                                         sizeof (struct lpfc_iocbq *)));
 321                         psli->iocbq_lookup = new_arr;
 322                         psli->iocbq_lookup_len = new_len;
 323                         psli->last_iotag = iotag;
 324                         psli->iocbq_lookup[iotag] = iocbq;
 325                         spin_unlock_irq(phba->host->host_lock);
 326                         iocbq->iotag = iotag;
 327                         kfree(old_arr);
 328                         return iotag;
 329                 }
 330         } else
 331                 spin_unlock_irq(phba->host->host_lock);
 332
 333         lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
 334                         "%d:0318 Failed to allocate IOTAG.last IOTAG is %d\n",
 335                         phba->brd_no, psli->last_iotag);
 336
 337         return 0;
 338 }
 339
 340 static void
 341 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 342                 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
 343 {
 344         /*
 345          * Set up an iotag
 346          */
 347         nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
 348
 349         /*
 350          * Issue iocb command to adapter
 351          */
 352         lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t));
 353         wmb();
 354         pring->stats.iocb_cmd++;
 355
 356         /*
 357          * If there is no completion routine to call, we can release the
 358          * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
 359          * that have no rsp ring completion, iocb_cmpl MUST be NULL.
 360          */
 361         if (nextiocb->iocb_cmpl)
 362                 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
 363         else
 364                 lpfc_sli_release_iocbq(phba, nextiocb);
 365
 366         /*
 367          * Let the HBA know what IOCB slot will be the next one the
 368          * driver will put a command into.
 369          */
 370         pring->cmdidx = pring->next_cmdidx;
 371         writel(pring->cmdidx, phba->MBslimaddr
 372                + (SLIMOFF + (pring->ringno * 2)) * 4);
 373 }
 374
 375 static void
 376 lpfc_sli_update_full_ring(struct lpfc_hba * phba,
 377                           struct lpfc_sli_ring *pring)
 378 {
 379         int ringno = pring->ringno;
 380
 381         pring->flag |= LPFC_CALL_RING_AVAILABLE;
 382
 383         wmb();
 384
 385         /*
 386          * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
 387          * The HBA will tell us when an IOCB entry is available.
 388          */
 389         writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
 390         readl(phba->CAregaddr); /* flush */
 391
 392         pring->stats.iocb_cmd_full++;
 393 }
 394
 395 static void
 396 lpfc_sli_update_ring(struct lpfc_hba * phba,
 397                      struct lpfc_sli_ring *pring)
 398 {
 399         int ringno = pring->ringno;
 400
 401         /*
 402          * Tell the HBA that there is work to do in this ring.
 403          */
 404         wmb();
 405         writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
 406         readl(phba->CAregaddr); /* flush */
 407 }
 408
 409 static void
 410 lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
 411 {
 412         IOCB_t *iocb;
 413         struct lpfc_iocbq *nextiocb;
 414
 415         /*
 416          * Check to see if:
 417          *  (a) there is anything on the txq to send
 418          *  (b) link is up
 419          *  (c) link attention events can be processed (fcp ring only)
 420          *  (d) IOCB processing is not blocked by the outstanding mbox command.
 421          */
 422         if (pring->txq_cnt &&
 423             (phba->hba_state > LPFC_LINK_DOWN) &&
 424             (pring->ringno != phba->sli.fcp_ring ||
 425              phba->sli.sli_flag & LPFC_PROCESS_LA) &&
 426             !(pring->flag & LPFC_STOP_IOCB_MBX)) {
 427
 428                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
 429                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
 430                         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
 431
 432                 if (iocb)
 433                         lpfc_sli_update_ring(phba, pring);
 434                 else
 435                         lpfc_sli_update_full_ring(phba, pring);
 436         }
 437
 438         return;
 439 }
 440
 441 /* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
 442 static void
 443 lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
 444 {
 445         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno];
 446
 447         /* If the ring is active, flag it */
 448         if (phba->sli.ring[ringno].cmdringaddr) {
 449                 if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
 450                         phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
 451                         /*
 452                          * Force update of the local copy of cmdGetInx
 453                          */
 454                         phba->sli.ring[ringno].local_getidx
 455                                 = le32_to_cpu(pgp->cmdGetInx);
 456                         spin_lock_irq(phba->host->host_lock);
 457                         lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
 458                         spin_unlock_irq(phba->host->host_lock);
 459                 }
 460         }
 461 }
 462
 463 static int
 464 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
 465 {
 466         uint8_t ret;
 467
 468         switch (mbxCommand) {
 469         case MBX_LOAD_SM:
 470         case MBX_READ_NV:
 471         case MBX_WRITE_NV:
 472         case MBX_RUN_BIU_DIAG:
 473         case MBX_INIT_LINK:
 474         case MBX_DOWN_LINK:
 475         case MBX_CONFIG_LINK:
 476         case MBX_CONFIG_RING:
 477         case MBX_RESET_RING:
 478         case MBX_READ_CONFIG:
 479         case MBX_READ_RCONFIG:
 480         case MBX_READ_SPARM:
 481         case MBX_READ_STATUS:
 482         case MBX_READ_RPI:
 483         case MBX_READ_XRI:
 484         case MBX_READ_REV:
 485         case MBX_READ_LNK_STAT:
 486         case MBX_REG_LOGIN:
 487         case MBX_UNREG_LOGIN:
 488         case MBX_READ_LA:
 489         case MBX_CLEAR_LA:
 490         case MBX_DUMP_MEMORY:
 491         case MBX_DUMP_CONTEXT:
 492         case MBX_RUN_DIAGS:
 493         case MBX_RESTART:
 494         case MBX_UPDATE_CFG:
 495         case MBX_DOWN_LOAD:
 496         case MBX_DEL_LD_ENTRY:
 497         case MBX_RUN_PROGRAM:
 498         case MBX_SET_MASK:
 499         case MBX_SET_SLIM:
 500         case MBX_UNREG_D_ID:
 501         case MBX_KILL_BOARD:
 502         case MBX_CONFIG_FARP:
 503         case MBX_BEACON:
 504         case MBX_LOAD_AREA:
 505         case MBX_RUN_BIU_DIAG64:
 506         case MBX_CONFIG_PORT:
 507         case MBX_READ_SPARM64:
 508         case MBX_READ_RPI64:
 509         case MBX_REG_LOGIN64:
 510         case MBX_READ_LA64:
 511         case MBX_FLASH_WR_ULA:
 512         case MBX_SET_DEBUG:
 513         case MBX_LOAD_EXP_ROM:
 514                 ret = mbxCommand;
 515                 break;
 516         default:
 517                 ret = MBX_SHUTDOWN;
 518                 break;
 519         }
 520         return (ret);
 521 }
 522 static void
 523 lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 524 {
 525         wait_queue_head_t *pdone_q;
 526
 527         /*
 528          * If pdone_q is empty, the driver thread gave up waiting and
 529          * continued running.
 530          */
 531         pdone_q = (wait_queue_head_t *) pmboxq->context1;
 532         if (pdone_q)
 533                 wake_up_interruptible(pdone_q);
 534         return;
 535 }
 536
 537 void
 538 lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 539 {
 540         struct lpfc_dmabuf *mp;
 541         mp = (struct lpfc_dmabuf *) (pmb->context1);
 542         if (mp) {
 543                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 544                 kfree(mp);
 545         }
 546         mempool_free( pmb, phba->mbox_mem_pool);
 547         return;
 548 }
 549
 550 int
 551 lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
 552 {
 553         MAILBOX_t *mbox;
 554         MAILBOX_t *pmbox;
 555         LPFC_MBOXQ_t *pmb;
 556         struct lpfc_sli *psli;
 557         int i, rc;
 558         uint32_t process_next;
 559
 560         psli = &phba->sli;
 561         /* We should only get here if we are in SLI2 mode */
 562         if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
 563                 return (1);
 564         }
 565
 566         phba->sli.slistat.mbox_event++;
 567
 568         /* Get a Mailbox buffer to setup mailbox commands for callback */
 569         if ((pmb = phba->sli.mbox_active)) {
 570                 pmbox = &pmb->mb;
 571                 mbox = &phba->slim2p->mbx;
 572
 573                 /* First check out the status word */
 574                 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
 575
 576                 /* Sanity check to ensure the host owns the mailbox */
 577                 if (pmbox->mbxOwner != OWN_HOST) {
 578                         /* Lets try for a while */
 579                         for (i = 0; i < 10240; i++) {
 580                                 /* First copy command data */
 581                                 lpfc_sli_pcimem_bcopy(mbox, pmbox,
 582                                                         sizeof (uint32_t));
 583                                 if (pmbox->mbxOwner == OWN_HOST)
 584                                         goto mbout;
 585                         }
 586                         /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
 587                            <status> */
 588                         lpfc_printf_log(phba,
 589                                         KERN_WARNING,
 590                                         LOG_MBOX | LOG_SLI,
 591                                         "%d:0304 Stray Mailbox Interrupt "
 592                                         "mbxCommand x%x mbxStatus x%x\n",
 593                                         phba->brd_no,
 594                                         pmbox->mbxCommand,
 595                                         pmbox->mbxStatus);
 596
 597                         spin_lock_irq(phba->host->host_lock);
 598                         phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
 599                         spin_unlock_irq(phba->host->host_lock);
 600                         return (1);
 601                 }
 602
 603               mbout:
 604                 del_timer_sync(&phba->sli.mbox_tmo);
 605                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
 606
 607                 /*
 608                  * It is a fatal error if unknown mbox command completion.
 609                  */
 610                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
 611                     MBX_SHUTDOWN) {
 612
 613                         /* Unknow mailbox command compl */
 614                         lpfc_printf_log(phba,
 615                                 KERN_ERR,
 616                                 LOG_MBOX | LOG_SLI,
 617                                 "%d:0323 Unknown Mailbox command %x Cmpl\n",
 618                                 phba->brd_no,
 619                                 pmbox->mbxCommand);
 620                         phba->hba_state = LPFC_HBA_ERROR;
 621                         phba->work_hs = HS_FFER3;
 622                         lpfc_handle_eratt(phba);
 623                         return (0);
 624                 }
 625
 626                 phba->sli.mbox_active = NULL;
 627                 if (pmbox->mbxStatus) {
 628                         phba->sli.slistat.mbox_stat_err++;
 629                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
 630                                 /* Mbox cmd cmpl error - RETRYing */
 631                                 lpfc_printf_log(phba,
 632                                         KERN_INFO,
 633                                         LOG_MBOX | LOG_SLI,
 634                                         "%d:0305 Mbox cmd cmpl error - "
 635                                         "RETRYing Data: x%x x%x x%x x%x\n",
 636                                         phba->brd_no,
 637                                         pmbox->mbxCommand,
 638                                         pmbox->mbxStatus,
 639                                         pmbox->un.varWords[0],
 640                                         phba->hba_state);
 641                                 pmbox->mbxStatus = 0;
 642                                 pmbox->mbxOwner = OWN_HOST;
 643                                 spin_lock_irq(phba->host->host_lock);
 644                                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 645                                 spin_unlock_irq(phba->host->host_lock);
 646                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 647                                 if (rc == MBX_SUCCESS)
 648                                         return (0);
 649                         }
 650                 }
 651
 652                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
 653                 lpfc_printf_log(phba,
 654                                 KERN_INFO,
 655                                 LOG_MBOX | LOG_SLI,
 656                                 "%d:0307 Mailbox cmd x%x Cmpl x%p "
 657                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
 658                                 phba->brd_no,
 659                                 pmbox->mbxCommand,
 660                                 pmb->mbox_cmpl,
 661                                 *((uint32_t *) pmbox),
 662                                 pmbox->un.varWords[0],
 663                                 pmbox->un.varWords[1],
 664                                 pmbox->un.varWords[2],
 665                                 pmbox->un.varWords[3],
 666                                 pmbox->un.varWords[4],
 667                                 pmbox->un.varWords[5],
 668                                 pmbox->un.varWords[6],
 669                                 pmbox->un.varWords[7]);
 670
 671                 if (pmb->mbox_cmpl) {
 672                         lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
 673                         pmb->mbox_cmpl(phba,pmb);
 674                 }
 675         }
 676
 677
 678         do {
 679                 process_next = 0;       /* by default don't loop */
 680                 spin_lock_irq(phba->host->host_lock);
 681                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 682
 683                 /* Process next mailbox command if there is one */
 684                 if ((pmb = lpfc_mbox_get(phba))) {
 685                         spin_unlock_irq(phba->host->host_lock);
 686                         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 687                         if (rc == MBX_NOT_FINISHED) {
 688                                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
 689                                 pmb->mbox_cmpl(phba,pmb);
 690                                 process_next = 1;
 691                                 continue;       /* loop back */
 692                         }
 693                 } else {
 694                         spin_unlock_irq(phba->host->host_lock);
 695                         /* Turn on IOCB processing */
 696                         for (i = 0; i < phba->sli.num_rings; i++) {
 697                                 lpfc_sli_turn_on_ring(phba, i);
 698                         }
 699
 700                         /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
 701                         while (!list_empty(&phba->freebufList)) {
 702                                 struct lpfc_dmabuf *mp;
 703
 704                                 mp = NULL;
 705                                 list_remove_head((&phba->freebufList),
 706                                                  mp,
 707                                                  struct lpfc_dmabuf,
 708                                                  list);
 709                                 if (mp) {
 710                                         lpfc_mbuf_free(phba, mp->virt,
 711                                                        mp->phys);
 712                                         kfree(mp);
 713                                 }
 714                         }
 715                 }
 716
 717         } while (process_next);
 718
 719         return (0);
 720 }
 721 static int
 722 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 723                             struct lpfc_iocbq *saveq)
 724 {
 725         IOCB_t           * irsp;
 726         WORD5            * w5p;
 727         uint32_t           Rctl, Type;
 728         uint32_t           match, i;
 729
 730         match = 0;
 731         irsp = &(saveq->iocb);
 732         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
 733             || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
 734                 Rctl = FC_ELS_REQ;
 735                 Type = FC_ELS_DATA;
 736         } else {
 737                 w5p =
 738                     (WORD5 *) & (saveq->iocb.un.
 739                                  ulpWord[5]);
 740                 Rctl = w5p->hcsw.Rctl;
 741                 Type = w5p->hcsw.Type;
 742
 743                 /* Firmware Workaround */
 744                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
 745                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
 746                         Rctl = FC_ELS_REQ;
 747                         Type = FC_ELS_DATA;
 748                         w5p->hcsw.Rctl = Rctl;
 749                         w5p->hcsw.Type = Type;
 750                 }
 751         }
 752         /* unSolicited Responses */
 753         if (pring->prt[0].profile) {
 754                 if (pring->prt[0].lpfc_sli_rcv_unsol_event)
 755                         (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
 756                                                                         saveq);
 757                 match = 1;
 758         } else {
 759                 /* We must search, based on rctl / type
 760                    for the right routine */
 761                 for (i = 0; i < pring->num_mask;
 762                      i++) {
 763                         if ((pring->prt[i].rctl ==
 764                              Rctl)
 765                             && (pring->prt[i].
 766                                 type == Type)) {
 767                                 if (pring->prt[i].lpfc_sli_rcv_unsol_event)
 768                                         (pring->prt[i].lpfc_sli_rcv_unsol_event)
 769                                                         (phba, pring, saveq);
 770                                 match = 1;
 771                                 break;
 772                         }
 773                 }
 774         }
 775         if (match == 0) {
 776                 /* Unexpected Rctl / Type received */
 777                 /* Ring <ringno> handler: unexpected
 778                    Rctl <Rctl> Type <Type> received */
 779                 lpfc_printf_log(phba,
 780                                 KERN_WARNING,
 781                                 LOG_SLI,
 782                                 "%d:0313 Ring %d handler: unexpected Rctl x%x "
 783                                 "Type x%x received \n",
 784                                 phba->brd_no,
 785                                 pring->ringno,
 786                                 Rctl,
 787                                 Type);
 788         }
 789         return(1);
 790 }
 791
 792 static struct lpfc_iocbq *
 793 lpfc_sli_iocbq_lookup(struct lpfc_hba * phba,
 794                       struct lpfc_sli_ring * pring,
 795                       struct lpfc_iocbq * prspiocb)
 796 {
 797         struct lpfc_iocbq *cmd_iocb = NULL;
 798         uint16_t iotag;
 799
 800         iotag = prspiocb->iocb.ulpIoTag;
 801
 802         if (iotag != 0 && iotag <= phba->sli.last_iotag) {
 803                 cmd_iocb = phba->sli.iocbq_lookup[iotag];
 804                 list_del(&cmd_iocb->list);
 805                 pring->txcmplq_cnt--;
 806                 return cmd_iocb;
 807         }
 808
 809         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 810                         "%d:0317 iotag x%x is out off "
 811                         "range: max iotag x%x wd0 x%x\n",
 812                         phba->brd_no, iotag,
 813                         phba->sli.last_iotag,
 814                         *(((uint32_t *) &prspiocb->iocb) + 7));
 815         return NULL;
 816 }
 817
 818 static int
 819 lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
 820                           struct lpfc_iocbq *saveq)
 821 {
 822         struct lpfc_iocbq * cmdiocbp;
 823         int rc = 1;
 824         unsigned long iflag;
 825
 826         /* Based on the iotag field, get the cmd IOCB from the txcmplq */
 827         spin_lock_irqsave(phba->host->host_lock, iflag);
 828         cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
 829         if (cmdiocbp) {
 830                 if (cmdiocbp->iocb_cmpl) {
 831                         /*
 832                          * Post all ELS completions to the worker thread.
 833                          * All other are passed to the completion callback.
 834                          */
 835                         if (pring->ringno == LPFC_ELS_RING) {
 836                                 spin_unlock_irqrestore(phba->host->host_lock,
 837                                                        iflag);
 838                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
 839                                 spin_lock_irqsave(phba->host->host_lock, iflag);
 840                         }
 841                         else {
 842                                 spin_unlock_irqrestore(phba->host->host_lock,
 843                                                        iflag);
 844                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
 845                                 spin_lock_irqsave(phba->host->host_lock, iflag);
 846                         }
 847                 } else
 848                         lpfc_sli_release_iocbq(phba, cmdiocbp);
 849         } else {
 850                 /*
 851                  * Unknown initiating command based on the response iotag.
 852                  * This could be the case on the ELS ring because of
 853                  * lpfc_els_abort().
 854                  */
 855                 if (pring->ringno != LPFC_ELS_RING) {
 856                         /*
 857                          * Ring <ringno> handler: unexpected completion IoTag
 858                          * <IoTag>
 859                          */
 860                         lpfc_printf_log(phba,
 861                                 KERN_WARNING,
 862                                 LOG_SLI,
 863                                 "%d:0322 Ring %d handler: unexpected "
 864                                 "completion IoTag x%x Data: x%x x%x x%x x%x\n",
 865                                 phba->brd_no,
 866                                 pring->ringno,
 867                                 saveq->iocb.ulpIoTag,
 868                                 saveq->iocb.ulpStatus,
 869                                 saveq->iocb.un.ulpWord[4],
 870                                 saveq->iocb.ulpCommand,
 871                                 saveq->iocb.ulpContext);
 872                 }
 873         }
 874
 875         spin_unlock_irqrestore(phba->host->host_lock, iflag);
 876         return rc;
 877 }
 878
 879 static void lpfc_sli_rsp_pointers_error(struct lpfc_hba * phba,
 880                                         struct lpfc_sli_ring * pring)
 881 {
 882         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
 883         /*
 884          * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
 885          * rsp ring <portRspMax>
 886          */
 887         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 888                         "%d:0312 Ring %d handler: portRspPut %d "
 889                         "is bigger then rsp ring %d\n",
 890                         phba->brd_no, pring->ringno,
 891                         le32_to_cpu(pgp->rspPutInx),
 892                         pring->numRiocb);
 893
 894         phba->hba_state = LPFC_HBA_ERROR;
 895
 896         /*
 897          * All error attention handlers are posted to
 898          * worker thread
 899          */
 900         phba->work_ha |= HA_ERATT;
 901         phba->work_hs = HS_FFER3;
 902         if (phba->work_wait)
 903                 wake_up(phba->work_wait);
 904
 905         return;
 906 }
 907
 908 void lpfc_sli_poll_fcp_ring(struct lpfc_hba * phba)
 909 {
 910         struct lpfc_sli      * psli   = &phba->sli;
 911         struct lpfc_sli_ring * pring = &psli->ring[LPFC_FCP_RING];
 912         IOCB_t *irsp = NULL;
 913         IOCB_t *entry = NULL;
 914         struct lpfc_iocbq *cmdiocbq = NULL;
 915         struct lpfc_iocbq rspiocbq;
 916         struct lpfc_pgp *pgp;
 917         uint32_t status;
 918         uint32_t portRspPut, portRspMax;
 919         int type;
 920         uint32_t rsp_cmpl = 0;
 921         void __iomem *to_slim;
 922         uint32_t ha_copy;
 923
 924         pring->stats.iocb_event++;
 925
 926         /* The driver assumes SLI-2 mode */
 927         pgp =  &phba->slim2p->mbx.us.s2.port[pring->ringno];
 928
 929         /*
 930          * The next available response entry should never exceed the maximum
 931          * entries.  If it does, treat it as an adapter hardware error.
 932          */
 933         portRspMax = pring->numRiocb;
 934         portRspPut = le32_to_cpu(pgp->rspPutInx);
 935         if (unlikely(portRspPut >= portRspMax)) {
 936                 lpfc_sli_rsp_pointers_error(phba, pring);
 937                 return;
 938         }
 939
 940         rmb();
 941         while (pring->rspidx != portRspPut) {
 942
 943                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
 944
 945                 if (++pring->rspidx >= portRspMax)
 946                         pring->rspidx = 0;
 947
 948                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
 949                                       (uint32_t *) &rspiocbq.iocb,
 950                                       sizeof (IOCB_t));
 951                 irsp = &rspiocbq.iocb;
 952                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
 953                 pring->stats.iocb_rsp++;
 954                 rsp_cmpl++;
 955
 956                 if (unlikely(irsp->ulpStatus)) {
 957                         /* Rsp ring <ringno> error: IOCB */
 958                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
 959                                         "%d:0326 Rsp Ring %d error: IOCB Data: "
 960                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
 961                                         phba->brd_no, pring->ringno,
 962                                         irsp->un.ulpWord[0],
 963                                         irsp->un.ulpWord[1],
 964                                         irsp->un.ulpWord[2],
 965                                         irsp->un.ulpWord[3],
 966                                         irsp->un.ulpWord[4],
 967                                         irsp->un.ulpWord[5],
 968                                         *(((uint32_t *) irsp) + 6),
 969                                         *(((uint32_t *) irsp) + 7));
 970                 }
 971
 972                 switch (type) {
 973                 case LPFC_ABORT_IOCB:
 974                 case LPFC_SOL_IOCB:
 975                         /*
 976                          * Idle exchange closed via ABTS from port.  No iocb
 977                          * resources need to be recovered.
 978                          */
 979                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
 980                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
 981                                                 "%d:0314 IOCB cmd 0x%x"
 982                                                 " processed. Skipping"
 983                                                 " completion", phba->brd_no,
 984                                                 irsp->ulpCommand);
 985                                 break;
 986                         }
 987
 988                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
 989                                                          &rspiocbq);
 990                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
 991                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
 992                                                       &rspiocbq);
 993                         }
 994                         break;
 995                 default:
 996                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
 997                                 char adaptermsg[LPFC_MAX_ADPTMSG];
 998                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
 999                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1000                                        MAX_MSG_DATA);
1001                                 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1002                                          phba->brd_no, adaptermsg);
1003                         } else {
1004                                 /* Unknown IOCB command */
1005                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1006                                                 "%d:0321 Unknown IOCB command "
1007                                                 "Data: x%x, x%x x%x x%x x%x\n",
1008                                                 phba->brd_no, type,
1009                                                 irsp->ulpCommand,
1010                                                 irsp->ulpStatus,
1011                                                 irsp->ulpIoTag,
1012                                                 irsp->ulpContext);
1013                         }
1014                         break;
1015                 }
1016
1017                 /*
1018                  * The response IOCB has been processed.  Update the ring
1019                  * pointer in SLIM.  If the port response put pointer has not
1020                  * been updated, sync the pgp->rspPutInx and fetch the new port
1021                  * response put pointer.
1022                  */
1023                 to_slim = phba->MBslimaddr +
1024                         (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1025                 writeb(pring->rspidx, to_slim);
1026
1027                 if (pring->rspidx == portRspPut)
1028                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1029         }
1030
1031         ha_copy = readl(phba->HAregaddr);
1032         ha_copy >>= (LPFC_FCP_RING * 4);
1033
1034         if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
1035                 pring->stats.iocb_rsp_full++;
1036                 status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
1037                 writel(status, phba->CAregaddr);
1038                 readl(phba->CAregaddr);
1039         }
1040         if ((ha_copy & HA_R0CE_RSP) &&
1041             (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1042                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1043                 pring->stats.iocb_cmd_empty++;
1044
1045                 /* Force update of the local copy of cmdGetInx */
1046                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1047                 lpfc_sli_resume_iocb(phba, pring);
1048
1049                 if ((pring->lpfc_sli_cmd_available))
1050                         (pring->lpfc_sli_cmd_available) (phba, pring);
1051
1052         }
1053
1054         return;
1055 }
1056
1057 /*
1058  * This routine presumes LPFC_FCP_RING handling and doesn't bother
1059  * to check it explicitly.
1060  */
1061 static int
1062 lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
1063                                 struct lpfc_sli_ring * pring, uint32_t mask)
1064 {
1065         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1066         IOCB_t *irsp = NULL;
1067         IOCB_t *entry = NULL;
1068         struct lpfc_iocbq *cmdiocbq = NULL;
1069         struct lpfc_iocbq rspiocbq;
1070         uint32_t status;
1071         uint32_t portRspPut, portRspMax;
1072         int rc = 1;
1073         lpfc_iocb_type type;
1074         unsigned long iflag;
1075         uint32_t rsp_cmpl = 0;
1076         void __iomem  *to_slim;
1077
1078         spin_lock_irqsave(phba->host->host_lock, iflag);
1079         pring->stats.iocb_event++;
1080
1081         /*
1082          * The next available response entry should never exceed the maximum
1083          * entries.  If it does, treat it as an adapter hardware error.
1084          */
1085         portRspMax = pring->numRiocb;
1086         portRspPut = le32_to_cpu(pgp->rspPutInx);
1087         if (unlikely(portRspPut >= portRspMax)) {
1088                 lpfc_sli_rsp_pointers_error(phba, pring);
1089                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1090                 return 1;
1091         }
1092
1093         rmb();
1094         while (pring->rspidx != portRspPut) {
1095                 /*
1096                  * Fetch an entry off the ring and copy it into a local data
1097                  * structure.  The copy involves a byte-swap since the
1098                  * network byte order and pci byte orders are different.
1099                  */
1100                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1101
1102                 if (++pring->rspidx >= portRspMax)
1103                         pring->rspidx = 0;
1104
1105                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1106                                       (uint32_t *) &rspiocbq.iocb,
1107                                       sizeof (IOCB_t));
1108                 INIT_LIST_HEAD(&(rspiocbq.list));
1109                 irsp = &rspiocbq.iocb;
1110
1111                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1112                 pring->stats.iocb_rsp++;
1113                 rsp_cmpl++;
1114
1115                 if (unlikely(irsp->ulpStatus)) {
1116                         /* Rsp ring <ringno> error: IOCB */
1117                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1118                                 "%d:0336 Rsp Ring %d error: IOCB Data: "
1119                                 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1120                                 phba->brd_no, pring->ringno,
1121                                 irsp->un.ulpWord[0], irsp->un.ulpWord[1],
1122                                 irsp->un.ulpWord[2], irsp->un.ulpWord[3],
1123                                 irsp->un.ulpWord[4], irsp->un.ulpWord[5],
1124                                 *(((uint32_t *) irsp) + 6),
1125                                 *(((uint32_t *) irsp) + 7));
1126                 }
1127
1128                 switch (type) {
1129                 case LPFC_ABORT_IOCB:
1130                 case LPFC_SOL_IOCB:
1131                         /*
1132                          * Idle exchange closed via ABTS from port.  No iocb
1133                          * resources need to be recovered.
1134                          */
1135                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1136                                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1137                                                 "%d:0333 IOCB cmd 0x%x"
1138                                                 " processed. Skipping"
1139                                                 " completion\n", phba->brd_no,
1140                                                 irsp->ulpCommand);
1141                                 break;
1142                         }
1143
1144                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1145                                                          &rspiocbq);
1146                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1147                                 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
1148                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1149                                                               &rspiocbq);
1150                                 } else {
1151                                         spin_unlock_irqrestore(
1152                                                 phba->host->host_lock, iflag);
1153                                         (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1154                                                               &rspiocbq);
1155                                         spin_lock_irqsave(phba->host->host_lock,
1156                                                           iflag);
1157                                 }
1158                         }
1159                         break;
1160                 case LPFC_UNSOL_IOCB:
1161                         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1162                         lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
1163                         spin_lock_irqsave(phba->host->host_lock, iflag);
1164                         break;
1165                 default:
1166                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1167                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1168                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1169                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1170                                        MAX_MSG_DATA);
1171                                 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1172                                          phba->brd_no, adaptermsg);
1173                         } else {
1174                                 /* Unknown IOCB command */
1175                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1176                                         "%d:0334 Unknown IOCB command "
1177                                         "Data: x%x, x%x x%x x%x x%x\n",
1178                                         phba->brd_no, type, irsp->ulpCommand,
1179                                         irsp->ulpStatus, irsp->ulpIoTag,
1180                                         irsp->ulpContext);
1181                         }
1182                         break;
1183                 }
1184
1185                 /*
1186                  * The response IOCB has been processed.  Update the ring
1187                  * pointer in SLIM.  If the port response put pointer has not
1188                  * been updated, sync the pgp->rspPutInx and fetch the new port
1189                  * response put pointer.
1190                  */
1191                 to_slim = phba->MBslimaddr +
1192                         (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1193                 writel(pring->rspidx, to_slim);
1194
1195                 if (pring->rspidx == portRspPut)
1196                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1197         }
1198
1199         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1200                 pring->stats.iocb_rsp_full++;
1201                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1202                 writel(status, phba->CAregaddr);
1203                 readl(phba->CAregaddr);
1204         }
1205         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1206                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1207                 pring->stats.iocb_cmd_empty++;
1208
1209                 /* Force update of the local copy of cmdGetInx */
1210                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1211                 lpfc_sli_resume_iocb(phba, pring);
1212
1213                 if ((pring->lpfc_sli_cmd_available))
1214                         (pring->lpfc_sli_cmd_available) (phba, pring);
1215
1216         }
1217
1218         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1219         return rc;
1220 }
1221
1222
1223 int
1224 lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
1225                            struct lpfc_sli_ring * pring, uint32_t mask)
1226 {
1227         IOCB_t *entry;
1228         IOCB_t *irsp = NULL;
1229         struct lpfc_iocbq *rspiocbp = NULL;
1230         struct lpfc_iocbq *next_iocb;
1231         struct lpfc_iocbq *cmdiocbp;
1232         struct lpfc_iocbq *saveq;
1233         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1234         uint8_t iocb_cmd_type;
1235         lpfc_iocb_type type;
1236         uint32_t status, free_saveq;
1237         uint32_t portRspPut, portRspMax;
1238         int rc = 1;
1239         unsigned long iflag;
1240         void __iomem  *to_slim;
1241
1242         spin_lock_irqsave(phba->host->host_lock, iflag);
1243         pring->stats.iocb_event++;
1244
1245         /*
1246          * The next available response entry should never exceed the maximum
1247          * entries.  If it does, treat it as an adapter hardware error.
1248          */
1249         portRspMax = pring->numRiocb;
1250         portRspPut = le32_to_cpu(pgp->rspPutInx);
1251         if (portRspPut >= portRspMax) {
1252                 /*
1253                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1254                  * rsp ring <portRspMax>
1255                  */
1256                 lpfc_printf_log(phba,
1257                                 KERN_ERR,
1258                                 LOG_SLI,
1259                                 "%d:0303 Ring %d handler: portRspPut %d "
1260                                 "is bigger then rsp ring %d\n",
1261                                 phba->brd_no,
1262                                 pring->ringno, portRspPut, portRspMax);
1263
1264                 phba->hba_state = LPFC_HBA_ERROR;
1265                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1266
1267                 phba->work_hs = HS_FFER3;
1268                 lpfc_handle_eratt(phba);
1269
1270                 return 1;
1271         }
1272
1273         rmb();
1274         while (pring->rspidx != portRspPut) {
1275                 /*
1276                  * Build a completion list and call the appropriate handler.
1277                  * The process is to get the next available response iocb, get
1278                  * a free iocb from the list, copy the response data into the
1279                  * free iocb, insert to the continuation list, and update the
1280                  * next response index to slim.  This process makes response
1281                  * iocb's in the ring available to DMA as fast as possible but
1282                  * pays a penalty for a copy operation.  Since the iocb is
1283                  * only 32 bytes, this penalty is considered small relative to
1284                  * the PCI reads for register values and a slim write.  When
1285                  * the ulpLe field is set, the entire Command has been
1286                  * received.
1287                  */
1288                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1289                 rspiocbp = lpfc_sli_get_iocbq(phba);
1290                 if (rspiocbp == NULL) {
1291                         printk(KERN_ERR "%s: out of buffers! Failing "
1292                                "completion.\n", __FUNCTION__);
1293                         break;
1294                 }
1295
1296                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
1297                 irsp = &rspiocbp->iocb;
1298
1299                 if (++pring->rspidx >= portRspMax)
1300                         pring->rspidx = 0;
1301
1302                 to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
1303                                               + 1) * 4;
1304                 writel(pring->rspidx, to_slim);
1305
1306                 if (list_empty(&(pring->iocb_continueq))) {
1307                         list_add(&rspiocbp->list, &(pring->iocb_continueq));
1308                 } else {
1309                         list_add_tail(&rspiocbp->list,
1310                                       &(pring->iocb_continueq));
1311                 }
1312
1313                 pring->iocb_continueq_cnt++;
1314                 if (irsp->ulpLe) {
1315                         /*
1316                          * By default, the driver expects to free all resources
1317                          * associated with this iocb completion.
1318                          */
1319                         free_saveq = 1;
1320                         saveq = list_get_first(&pring->iocb_continueq,
1321                                                struct lpfc_iocbq, list);
1322                         irsp = &(saveq->iocb);
1323                         list_del_init(&pring->iocb_continueq);
1324                         pring->iocb_continueq_cnt = 0;
1325
1326                         pring->stats.iocb_rsp++;
1327
1328                         if (irsp->ulpStatus) {
1329                                 /* Rsp ring <ringno> error: IOCB */
1330                                 lpfc_printf_log(phba,
1331                                         KERN_WARNING,
1332                                         LOG_SLI,
1333                                         "%d:0328 Rsp Ring %d error: IOCB Data: "
1334                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1335                                         phba->brd_no,
1336                                         pring->ringno,
1337                                         irsp->un.ulpWord[0],
1338                                         irsp->un.ulpWord[1],
1339                                         irsp->un.ulpWord[2],
1340                                         irsp->un.ulpWord[3],
1341                                         irsp->un.ulpWord[4],
1342                                         irsp->un.ulpWord[5],
1343                                         *(((uint32_t *) irsp) + 6),
1344                                         *(((uint32_t *) irsp) + 7));
1345                         }
1346
1347                         /*
1348                          * Fetch the IOCB command type and call the correct
1349                          * completion routine.  Solicited and Unsolicited
1350                          * IOCBs on the ELS ring get freed back to the
1351                          * lpfc_iocb_list by the discovery kernel thread.
1352                          */
1353                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1354                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1355                         if (type == LPFC_SOL_IOCB) {
1356                                 spin_unlock_irqrestore(phba->host->host_lock,
1357                                                        iflag);
1358                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1359                                         saveq);
1360                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1361                         } else if (type == LPFC_UNSOL_IOCB) {
1362                                 spin_unlock_irqrestore(phba->host->host_lock,
1363                                                        iflag);
1364                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1365                                         saveq);
1366                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1367                         } else if (type == LPFC_ABORT_IOCB) {
1368                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1369                                     ((cmdiocbp =
1370                                       lpfc_sli_iocbq_lookup(phba, pring,
1371                                                             saveq)))) {
1372                                         /* Call the specified completion
1373                                            routine */
1374                                         if (cmdiocbp->iocb_cmpl) {
1375                                                 spin_unlock_irqrestore(
1376                                                        phba->host->host_lock,
1377                                                        iflag);
1378                                                 (cmdiocbp->iocb_cmpl) (phba,
1379                                                              cmdiocbp, saveq);
1380                                                 spin_lock_irqsave(
1381                                                           phba->host->host_lock,
1382                                                           iflag);
1383                                         } else
1384                                                 lpfc_sli_release_iocbq(phba,
1385                                                                       cmdiocbp);
1386                                 }
1387                         } else if (type == LPFC_UNKNOWN_IOCB) {
1388                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1389
1390                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1391
1392                                         memset(adaptermsg, 0,
1393                                                LPFC_MAX_ADPTMSG);
1394                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1395                                                MAX_MSG_DATA);
1396                                         dev_warn(&((phba->pcidev)->dev),
1397                                                  "lpfc%d: %s",
1398                                                  phba->brd_no, adaptermsg);
1399                                 } else {
1400                                         /* Unknown IOCB command */
1401                                         lpfc_printf_log(phba,
1402                                                 KERN_ERR,
1403                                                 LOG_SLI,
1404                                                 "%d:0335 Unknown IOCB command "
1405                                                 "Data: x%x x%x x%x x%x\n",
1406                                                 phba->brd_no,
1407                                                 irsp->ulpCommand,
1408                                                 irsp->ulpStatus,
1409                                                 irsp->ulpIoTag,
1410                                                 irsp->ulpContext);
1411                                 }
1412                         }
1413
1414                         if (free_saveq) {
1415                                 if (!list_empty(&saveq->list)) {
1416                                         list_for_each_entry_safe(rspiocbp,
1417                                                                  next_iocb,
1418                                                                  &saveq->list,
1419                                                                  list) {
1420                                                 list_del(&rspiocbp->list);
1421                                                 lpfc_sli_release_iocbq(phba,
1422                                                                      rspiocbp);
1423                                         }
1424                                 }
1425                                 lpfc_sli_release_iocbq(phba, saveq);
1426                         }
1427                 }
1428
1429                 /*
1430                  * If the port response put pointer has not been updated, sync
1431                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1432                  * response put pointer.
1433                  */
1434                 if (pring->rspidx == portRspPut) {
1435                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1436                 }
1437         } /* while (pring->rspidx != portRspPut) */
1438
1439         if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
1440                 /* At least one response entry has been freed */
1441                 pring->stats.iocb_rsp_full++;
1442                 /* SET RxRE_RSP in Chip Att register */
1443                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1444                 writel(status, phba->CAregaddr);
1445                 readl(phba->CAregaddr); /* flush */
1446         }
1447         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1448                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1449                 pring->stats.iocb_cmd_empty++;
1450
1451                 /* Force update of the local copy of cmdGetInx */
1452                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1453                 lpfc_sli_resume_iocb(phba, pring);
1454
1455                 if ((pring->lpfc_sli_cmd_available))
1456                         (pring->lpfc_sli_cmd_available) (phba, pring);
1457
1458         }
1459
1460         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1461         return rc;
1462 }
1463
1464 int
1465 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1466 {
1467         struct lpfc_iocbq *iocb, *next_iocb;
1468         IOCB_t *icmd = NULL, *cmd = NULL;
1469         int errcnt;
1470
1471         errcnt = 0;
1472
1473         /* Error everything on txq and txcmplq
1474          * First do the txq.
1475          */
1476         spin_lock_irq(phba->host->host_lock);
1477         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
1478                 list_del_init(&iocb->list);
1479                 if (iocb->iocb_cmpl) {
1480                         icmd = &iocb->iocb;
1481                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1482                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1483                         spin_unlock_irq(phba->host->host_lock);
1484                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1485                         spin_lock_irq(phba->host->host_lock);
1486                 } else
1487                         lpfc_sli_release_iocbq(phba, iocb);
1488         }
1489         pring->txq_cnt = 0;
1490         INIT_LIST_HEAD(&(pring->txq));
1491
1492         /* Next issue ABTS for everything on the txcmplq */
1493         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1494                 cmd = &iocb->iocb;
1495
1496                 /*
1497                  * Imediate abort of IOCB, deque and call compl
1498                  */
1499
1500                 list_del_init(&iocb->list);
1501                 pring->txcmplq_cnt--;
1502
1503                 if (iocb->iocb_cmpl) {
1504                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1505                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1506                         spin_unlock_irq(phba->host->host_lock);
1507                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1508                         spin_lock_irq(phba->host->host_lock);
1509                 } else
1510                         lpfc_sli_release_iocbq(phba, iocb);
1511         }
1512
1513         INIT_LIST_HEAD(&pring->txcmplq);
1514         pring->txcmplq_cnt = 0;
1515         spin_unlock_irq(phba->host->host_lock);
1516
1517         return errcnt;
1518 }
1519
1520 int
1521 lpfc_sli_brdready(struct lpfc_hba * phba, uint32_t mask)
1522 {
1523         uint32_t status;
1524         int i = 0;
1525         int retval = 0;
1526
1527         /* Read the HBA Host Status Register */
1528         status = readl(phba->HSregaddr);
1529
1530         /*
1531          * Check status register every 100ms for 5 retries, then every
1532          * 500ms for 5, then every 2.5 sec for 5, then reset board and
1533          * every 2.5 sec for 4.
1534          * Break our of the loop if errors occurred during init.
1535          */
1536         while (((status & mask) != mask) &&
1537                !(status & HS_FFERM) &&
1538                i++ < 20) {
1539
1540                 if (i <= 5)
1541                         msleep(10);
1542                 else if (i <= 10)
1543                         msleep(500);
1544                 else
1545                         msleep(2500);
1546
1547                 if (i == 15) {
1548                         phba->hba_state = LPFC_STATE_UNKNOWN; /* Do post */
1549                         lpfc_sli_brdrestart(phba);
1550                 }
1551                 /* Read the HBA Host Status Register */
1552                 status = readl(phba->HSregaddr);
1553         }
1554
1555         /* Check to see if any errors occurred during init */
1556         if ((status & HS_FFERM) || (i >= 20)) {
1557                 phba->hba_state = LPFC_HBA_ERROR;
1558                 retval = 1;
1559         }
1560
1561         return retval;
1562 }
1563
1564 #define BARRIER_TEST_PATTERN (0xdeadbeef)
1565
1566 void lpfc_reset_barrier(struct lpfc_hba * phba)
1567 {
1568         uint32_t __iomem *resp_buf;
1569         uint32_t __iomem *mbox_buf;
1570         volatile uint32_t mbox;
1571         uint32_t hc_copy;
1572         int  i;
1573         uint8_t hdrtype;
1574
1575         pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
1576         if (hdrtype != 0x80 ||
1577             (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
1578              FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
1579                 return;
1580
1581         /*
1582          * Tell the other part of the chip to suspend temporarily all
1583          * its DMA activity.
1584          */
1585         resp_buf = phba->MBslimaddr;
1586
1587         /* Disable the error attention */
1588         hc_copy = readl(phba->HCregaddr);
1589         writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
1590         readl(phba->HCregaddr); /* flush */
1591
1592         if (readl(phba->HAregaddr) & HA_ERATT) {
1593                 /* Clear Chip error bit */
1594                 writel(HA_ERATT, phba->HAregaddr);
1595                 phba->stopped = 1;
1596         }
1597
1598         mbox = 0;
1599         ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD;
1600         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP;
1601
1602         writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
1603         mbox_buf = phba->MBslimaddr;
1604         writel(mbox, mbox_buf);
1605
1606         for (i = 0;
1607              readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++)
1608                 mdelay(1);
1609
1610         if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) {
1611                 if (phba->sli.sli_flag & LPFC_SLI2_ACTIVE ||
1612                     phba->stopped)
1613                         goto restore_hc;
1614                 else
1615                         goto clear_errat;
1616         }
1617
1618         ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST;
1619         for (i = 0; readl(resp_buf) != mbox &&  i < 500; i++)
1620                 mdelay(1);
1621
1622 clear_errat:
1623
1624         while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500)
1625                 mdelay(1);
1626
1627         if (readl(phba->HAregaddr) & HA_ERATT) {
1628                 writel(HA_ERATT, phba->HAregaddr);
1629                 phba->stopped = 1;
1630         }
1631
1632 restore_hc:
1633         writel(hc_copy, phba->HCregaddr);
1634         readl(phba->HCregaddr); /* flush */
1635 }
1636
1637 int
1638 lpfc_sli_brdkill(struct lpfc_hba * phba)
1639 {
1640         struct lpfc_sli *psli;
1641         LPFC_MBOXQ_t *pmb;
1642         uint32_t status;
1643         uint32_t ha_copy;
1644         int retval;
1645         int i = 0;
1646
1647         psli = &phba->sli;
1648
1649         /* Kill HBA */
1650         lpfc_printf_log(phba,
1651                 KERN_INFO,
1652                 LOG_SLI,
1653                 "%d:0329 Kill HBA Data: x%x x%x\n",
1654                 phba->brd_no,
1655                 phba->hba_state,
1656                 psli->sli_flag);
1657
1658         if ((pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1659                                                   GFP_KERNEL)) == 0)
1660                 return 1;
1661
1662         /* Disable the error attention */
1663         spin_lock_irq(phba->host->host_lock);
1664         status = readl(phba->HCregaddr);
1665         status &= ~HC_ERINT_ENA;
1666         writel(status, phba->HCregaddr);
1667         readl(phba->HCregaddr); /* flush */
1668         spin_unlock_irq(phba->host->host_lock);
1669
1670         lpfc_kill_board(phba, pmb);
1671         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1672         retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1673
1674         if (retval != MBX_SUCCESS) {
1675                 if (retval != MBX_BUSY)
1676                         mempool_free(pmb, phba->mbox_mem_pool);
1677                 return 1;
1678         }
1679
1680         psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
1681
1682         mempool_free(pmb, phba->mbox_mem_pool);
1683
1684         /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
1685          * attention every 100ms for 3 seconds. If we don't get ERATT after
1686          * 3 seconds we still set HBA_ERROR state because the status of the
1687          * board is now undefined.
1688          */
1689         ha_copy = readl(phba->HAregaddr);
1690
1691         while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
1692                 mdelay(100);
1693                 ha_copy = readl(phba->HAregaddr);
1694         }
1695
1696         del_timer_sync(&psli->mbox_tmo);
1697         if (ha_copy & HA_ERATT) {
1698                 writel(HA_ERATT, phba->HAregaddr);
1699                 phba->stopped = 1;
1700         }
1701         spin_lock_irq(phba->host->host_lock);
1702         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1703         spin_unlock_irq(phba->host->host_lock);
1704
1705         psli->mbox_active = NULL;
1706         lpfc_hba_down_post(phba);
1707         phba->hba_state = LPFC_HBA_ERROR;
1708
1709         return (ha_copy & HA_ERATT ? 0 : 1);
1710 }
1711
1712 int
1713 lpfc_sli_brdreset(struct lpfc_hba * phba)
1714 {
1715         struct lpfc_sli *psli;
1716         struct lpfc_sli_ring *pring;
1717         uint16_t cfg_value;
1718         int i;
1719
1720         psli = &phba->sli;
1721
1722         /* Reset HBA */
1723         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1724                         "%d:0325 Reset HBA Data: x%x x%x\n", phba->brd_no,
1725                         phba->hba_state, psli->sli_flag);
1726
1727         /* perform board reset */
1728         phba->fc_eventTag = 0;
1729         phba->fc_myDID = 0;
1730         phba->fc_prevDID = 0;
1731
1732         /* Turn off parity checking and serr during the physical reset */
1733         pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
1734         pci_write_config_word(phba->pcidev, PCI_COMMAND,
1735                               (cfg_value &
1736                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
1737
1738         psli->sli_flag &= ~(LPFC_SLI2_ACTIVE | LPFC_PROCESS_LA);
1739         /* Now toggle INITFF bit in the Host Control Register */
1740         writel(HC_INITFF, phba->HCregaddr);
1741         mdelay(1);
1742         readl(phba->HCregaddr); /* flush */
1743         writel(0, phba->HCregaddr);
1744         readl(phba->HCregaddr); /* flush */
1745
1746         /* Restore PCI cmd register */
1747         pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
1748
1749         /* Initialize relevant SLI info */
1750         for (i = 0; i < psli->num_rings; i++) {
1751                 pring = &psli->ring[i];
1752                 pring->flag = 0;
1753                 pring->rspidx = 0;
1754                 pring->next_cmdidx  = 0;
1755                 pring->local_getidx = 0;
1756                 pring->cmdidx = 0;
1757                 pring->missbufcnt = 0;
1758         }
1759
1760         phba->hba_state = LPFC_WARM_START;
1761         return 0;
1762 }
1763
1764 int
1765 lpfc_sli_brdrestart(struct lpfc_hba * phba)
1766 {
1767         MAILBOX_t *mb;
1768         struct lpfc_sli *psli;
1769         uint16_t skip_post;
1770         volatile uint32_t word0;
1771         void __iomem *to_slim;
1772
1773         spin_lock_irq(phba->host->host_lock);
1774
1775         psli = &phba->sli;
1776
1777         /* Restart HBA */
1778         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1779                         "%d:0337 Restart HBA Data: x%x x%x\n", phba->brd_no,
1780                         phba->hba_state, psli->sli_flag);
1781
1782         word0 = 0;
1783         mb = (MAILBOX_t *) &word0;
1784         mb->mbxCommand = MBX_RESTART;
1785         mb->mbxHc = 1;
1786
1787         lpfc_reset_barrier(phba);
1788
1789         to_slim = phba->MBslimaddr;
1790         writel(*(uint32_t *) mb, to_slim);
1791         readl(to_slim); /* flush */
1792
1793         /* Only skip post after fc_ffinit is completed */
1794         if (phba->hba_state) {
1795                 skip_post = 1;
1796                 word0 = 1;      /* This is really setting up word1 */
1797         } else {
1798                 skip_post = 0;
1799                 word0 = 0;      /* This is really setting up word1 */
1800         }
1801         to_slim = phba->MBslimaddr + sizeof (uint32_t);
1802         writel(*(uint32_t *) mb, to_slim);
1803         readl(to_slim); /* flush */
1804
1805         lpfc_sli_brdreset(phba);
1806         phba->stopped = 0;
1807         phba->hba_state = LPFC_INIT_START;
1808
1809         spin_unlock_irq(phba->host->host_lock);
1810
1811         memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
1812         psli->stats_start = get_seconds();
1813
1814         if (skip_post)
1815                 mdelay(100);
1816         else
1817                 mdelay(2000);
1818
1819         lpfc_hba_down_post(phba);
1820
1821         return 0;
1822 }
1823
1824 static int
1825 lpfc_sli_chipset_init(struct lpfc_hba *phba)
1826 {
1827         uint32_t status, i = 0;
1828
1829         /* Read the HBA Host Status Register */
1830         status = readl(phba->HSregaddr);
1831
1832         /* Check status register to see what current state is */
1833         i = 0;
1834         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
1835
1836                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
1837                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
1838                  * 4.
1839                  */
1840                 if (i++ >= 20) {
1841                         /* Adapter failed to init, timeout, status reg
1842                            <status> */
1843                         lpfc_printf_log(phba,
1844                                         KERN_ERR,
1845                                         LOG_INIT,
1846                                         "%d:0436 Adapter failed to init, "
1847                                         "timeout, status reg x%x\n",
1848                                         phba->brd_no,
1849                                         status);
1850                         phba->hba_state = LPFC_HBA_ERROR;
1851                         return -ETIMEDOUT;
1852                 }
1853
1854                 /* Check to see if any errors occurred during init */
1855                 if (status & HS_FFERM) {
1856                         /* ERROR: During chipset initialization */
1857                         /* Adapter failed to init, chipset, status reg
1858                            <status> */
1859                         lpfc_printf_log(phba,
1860                                         KERN_ERR,
1861                                         LOG_INIT,
1862                                         "%d:0437 Adapter failed to init, "
1863                                         "chipset, status reg x%x\n",
1864                                         phba->brd_no,
1865                                         status);
1866                         phba->hba_state = LPFC_HBA_ERROR;
1867                         return -EIO;
1868                 }
1869
1870                 if (i <= 5) {
1871                         msleep(10);
1872                 } else if (i <= 10) {
1873                         msleep(500);
1874                 } else {
1875                         msleep(2500);
1876                 }
1877
1878                 if (i == 15) {
1879                         phba->hba_state = LPFC_STATE_UNKNOWN; /* Do post */
1880                         lpfc_sli_brdrestart(phba);
1881                 }
1882                 /* Read the HBA Host Status Register */
1883                 status = readl(phba->HSregaddr);
1884         }
1885
1886         /* Check to see if any errors occurred during init */
1887         if (status & HS_FFERM) {
1888                 /* ERROR: During chipset initialization */
1889                 /* Adapter failed to init, chipset, status reg <status> */
1890                 lpfc_printf_log(phba,
1891                                 KERN_ERR,
1892                                 LOG_INIT,
1893                                 "%d:0438 Adapter failed to init, chipset, "
1894                                 "status reg x%x\n",
1895                                 phba->brd_no,
1896                                 status);
1897                 phba->hba_state = LPFC_HBA_ERROR;
1898                 return -EIO;
1899         }
1900
1901         /* Clear all interrupt enable conditions */
1902         writel(0, phba->HCregaddr);
1903         readl(phba->HCregaddr); /* flush */
1904
1905         /* setup host attn register */
1906         writel(0xffffffff, phba->HAregaddr);
1907         readl(phba->HAregaddr); /* flush */
1908         return 0;
1909 }
1910
1911 int
1912 lpfc_sli_hba_setup(struct lpfc_hba * phba)
1913 {
1914         LPFC_MBOXQ_t *pmb;
1915         uint32_t resetcount = 0, rc = 0, done = 0;
1916
1917         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1918         if (!pmb) {
1919                 phba->hba_state = LPFC_HBA_ERROR;
1920                 return -ENOMEM;
1921         }
1922
1923         while (resetcount < 2 && !done) {
1924                 spin_lock_irq(phba->host->host_lock);
1925                 phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
1926                 spin_unlock_irq(phba->host->host_lock);
1927                 phba->hba_state = LPFC_STATE_UNKNOWN;
1928                 lpfc_sli_brdrestart(phba);
1929                 msleep(2500);
1930                 rc = lpfc_sli_chipset_init(phba);
1931                 if (rc)
1932                         break;
1933
1934                 spin_lock_irq(phba->host->host_lock);
1935                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1936                 spin_unlock_irq(phba->host->host_lock);
1937                 resetcount++;
1938
1939         /* Call pre CONFIG_PORT mailbox command initialization.  A value of 0
1940          * means the call was successful.  Any other nonzero value is a failure,
1941          * but if ERESTART is returned, the driver may reset the HBA and try
1942          * again.
1943          */
1944                 rc = lpfc_config_port_prep(phba);
1945                 if (rc == -ERESTART) {
1946                         phba->hba_state = 0;
1947                         continue;
1948                 } else if (rc) {
1949                         break;
1950                 }
1951
1952                 phba->hba_state = LPFC_INIT_MBX_CMDS;
1953                 lpfc_config_port(phba, pmb);
1954                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
1955                 if (rc == MBX_SUCCESS)
1956                         done = 1;
1957                 else {
1958                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1959                                 "%d:0442 Adapter failed to init, mbxCmd x%x "
1960                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
1961                                 phba->brd_no, pmb->mb.mbxCommand,
1962                                 pmb->mb.mbxStatus, 0);
1963                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1964                 }
1965         }
1966         if (!done)
1967                 goto lpfc_sli_hba_setup_error;
1968
1969         rc = lpfc_sli_ring_map(phba, pmb);
1970
1971         if (rc)
1972                 goto lpfc_sli_hba_setup_error;
1973
1974         phba->sli.sli_flag |= LPFC_PROCESS_LA;
1975
1976         rc = lpfc_config_port_post(phba);
1977         if (rc)
1978                 goto lpfc_sli_hba_setup_error;
1979
1980         goto lpfc_sli_hba_setup_exit;
1981 lpfc_sli_hba_setup_error:
1982         phba->hba_state = LPFC_HBA_ERROR;
1983 lpfc_sli_hba_setup_exit:
1984         mempool_free(pmb, phba->mbox_mem_pool);
1985         return rc;
1986 }
1987
1988 static void
1989 lpfc_mbox_abort(struct lpfc_hba * phba)
1990 {
1991         LPFC_MBOXQ_t *pmbox;
1992         MAILBOX_t *mb;
1993
1994         if (phba->sli.mbox_active) {
1995                 del_timer_sync(&phba->sli.mbox_tmo);
1996                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1997                 pmbox = phba->sli.mbox_active;
1998                 mb = &pmbox->mb;
1999                 phba->sli.mbox_active = NULL;
2000                 if (pmbox->mbox_cmpl) {
2001                         mb->mbxStatus = MBX_NOT_FINISHED;
2002                         (pmbox->mbox_cmpl) (phba, pmbox);
2003                 }
2004                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2005         }
2006
2007         /* Abort all the non active mailbox commands. */
2008         spin_lock_irq(phba->host->host_lock);
2009         pmbox = lpfc_mbox_get(phba);
2010         while (pmbox) {
2011                 mb = &pmbox->mb;
2012                 if (pmbox->mbox_cmpl) {
2013                         mb->mbxStatus = MBX_NOT_FINISHED;
2014                         spin_unlock_irq(phba->host->host_lock);
2015                         (pmbox->mbox_cmpl) (phba, pmbox);
2016                         spin_lock_irq(phba->host->host_lock);
2017                 }
2018                 pmbox = lpfc_mbox_get(phba);
2019         }
2020         spin_unlock_irq(phba->host->host_lock);
2021         return;
2022 }
2023
2024 /*! lpfc_mbox_timeout
2025  *
2026  * \pre
2027  * \post
2028  * \param hba Pointer to per struct lpfc_hba structure
2029  * \param l1  Pointer to the driver's mailbox queue.
2030  * \return
2031  *   void
2032  *
2033  * \b Description:
2034  *
2035  * This routine handles mailbox timeout events at timer interrupt context.
2036  */
2037 void
2038 lpfc_mbox_timeout(unsigned long ptr)
2039 {
2040         struct lpfc_hba *phba;
2041         unsigned long iflag;
2042
2043         phba = (struct lpfc_hba *)ptr;
2044         spin_lock_irqsave(phba->host->host_lock, iflag);
2045         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
2046                 phba->work_hba_events |= WORKER_MBOX_TMO;
2047                 if (phba->work_wait)
2048                         wake_up(phba->work_wait);
2049         }
2050         spin_unlock_irqrestore(phba->host->host_lock, iflag);
2051 }
2052
2053 void
2054 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
2055 {
2056         LPFC_MBOXQ_t *pmbox;
2057         MAILBOX_t *mb;
2058
2059         spin_lock_irq(phba->host->host_lock);
2060         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
2061                 spin_unlock_irq(phba->host->host_lock);
2062                 return;
2063         }
2064
2065         phba->work_hba_events &= ~WORKER_MBOX_TMO;
2066
2067         pmbox = phba->sli.mbox_active;
2068         mb = &pmbox->mb;
2069
2070         /* Mbox cmd <mbxCommand> timeout */
2071         lpfc_printf_log(phba,
2072                 KERN_ERR,
2073                 LOG_MBOX | LOG_SLI,
2074                 "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
2075                 phba->brd_no,
2076                 mb->mbxCommand,
2077                 phba->hba_state,
2078                 phba->sli.sli_flag,
2079                 phba->sli.mbox_active);
2080
2081         phba->sli.mbox_active = NULL;
2082         if (pmbox->mbox_cmpl) {
2083                 mb->mbxStatus = MBX_NOT_FINISHED;
2084                 spin_unlock_irq(phba->host->host_lock);
2085                 (pmbox->mbox_cmpl) (phba, pmbox);
2086                 spin_lock_irq(phba->host->host_lock);
2087         }
2088         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2089
2090         spin_unlock_irq(phba->host->host_lock);
2091         lpfc_mbox_abort(phba);
2092         return;
2093 }
2094
2095 int
2096 lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
2097 {
2098         MAILBOX_t *mb;
2099         struct lpfc_sli *psli;
2100         uint32_t status, evtctr;
2101         uint32_t ha_copy;
2102         int i;
2103         unsigned long drvr_flag = 0;
2104         volatile uint32_t word0, ldata;
2105         void __iomem *to_slim;
2106
2107         psli = &phba->sli;
2108
2109         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
2110
2111
2112         mb = &pmbox->mb;
2113         status = MBX_SUCCESS;
2114
2115         if (phba->hba_state == LPFC_HBA_ERROR) {
2116                 spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2117
2118                 /* Mbox command <mbxCommand> cannot issue */
2119                 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2120                 return (MBX_NOT_FINISHED);
2121         }
2122
2123         if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
2124             !(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
2125                 spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2126                 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2127                 return (MBX_NOT_FINISHED);
2128         }
2129
2130         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
2131                 /* Polling for a mbox command when another one is already active
2132                  * is not allowed in SLI. Also, the driver must have established
2133                  * SLI2 mode to queue and process multiple mbox commands.
2134                  */
2135
2136                 if (flag & MBX_POLL) {
2137                         spin_unlock_irqrestore(phba->host->host_lock,
2138                                                drvr_flag);
2139
2140                         /* Mbox command <mbxCommand> cannot issue */
2141                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2142                         return (MBX_NOT_FINISHED);
2143                 }
2144
2145                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
2146                         spin_unlock_irqrestore(phba->host->host_lock,
2147                                                drvr_flag);
2148                         /* Mbox command <mbxCommand> cannot issue */
2149                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2150                         return (MBX_NOT_FINISHED);
2151                 }
2152
2153                 /* Handle STOP IOCB processing flag. This is only meaningful
2154                  * if we are not polling for mbox completion.
2155                  */
2156                 if (flag & MBX_STOP_IOCB) {
2157                         flag &= ~MBX_STOP_IOCB;
2158                         /* Now flag each ring */
2159                         for (i = 0; i < psli->num_rings; i++) {
2160                                 /* If the ring is active, flag it */
2161                                 if (psli->ring[i].cmdringaddr) {
2162                                         psli->ring[i].flag |=
2163                                             LPFC_STOP_IOCB_MBX;
2164                                 }
2165                         }
2166                 }
2167
2168                 /* Another mailbox command is still being processed, queue this
2169                  * command to be processed later.
2170                  */
2171                 lpfc_mbox_put(phba, pmbox);
2172
2173                 /* Mbox cmd issue - BUSY */
2174                 lpfc_printf_log(phba,
2175                         KERN_INFO,
2176                         LOG_MBOX | LOG_SLI,
2177                         "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
2178                         phba->brd_no,
2179                         mb->mbxCommand,
2180                         phba->hba_state,
2181                         psli->sli_flag,
2182                         flag);
2183
2184                 psli->slistat.mbox_busy++;
2185                 spin_unlock_irqrestore(phba->host->host_lock,
2186                                        drvr_flag);
2187
2188                 return (MBX_BUSY);
2189         }
2190
2191         /* Handle STOP IOCB processing flag. This is only meaningful
2192          * if we are not polling for mbox completion.
2193          */
2194         if (flag & MBX_STOP_IOCB) {
2195                 flag &= ~MBX_STOP_IOCB;
2196                 if (flag == MBX_NOWAIT) {
2197                         /* Now flag each ring */
2198                         for (i = 0; i < psli->num_rings; i++) {
2199                                 /* If the ring is active, flag it */
2200                                 if (psli->ring[i].cmdringaddr) {
2201                                         psli->ring[i].flag |=
2202                                             LPFC_STOP_IOCB_MBX;
2203                                 }
2204                         }
2205                 }
2206         }
2207
2208         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2209
2210         /* If we are not polling, we MUST be in SLI2 mode */
2211         if (flag != MBX_POLL) {
2212                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE) &&
2213                     (mb->mbxCommand != MBX_KILL_BOARD)) {
2214                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2215                         spin_unlock_irqrestore(phba->host->host_lock,
2216                                                drvr_flag);
2217                         /* Mbox command <mbxCommand> cannot issue */
2218                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
2219                         return (MBX_NOT_FINISHED);
2220                 }
2221                 /* timeout active mbox command */
2222                 mod_timer(&psli->mbox_tmo, (jiffies +
2223                                (HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand))));
2224         }
2225
2226         /* Mailbox cmd <cmd> issue */
2227         lpfc_printf_log(phba,
2228                 KERN_INFO,
2229                 LOG_MBOX | LOG_SLI,
2230                 "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
2231                 phba->brd_no,
2232                 mb->mbxCommand,
2233                 phba->hba_state,
2234                 psli->sli_flag,
2235                 flag);
2236
2237         psli->slistat.mbox_cmd++;
2238         evtctr = psli->slistat.mbox_event;
2239
2240         /* next set own bit for the adapter and copy over command word */
2241         mb->mbxOwner = OWN_CHIP;
2242
2243         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2244                 /* First copy command data to host SLIM area */
2245                 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
2246         } else {
2247                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2248                         /* copy command data into host mbox for cmpl */
2249                         lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
2250                                         MAILBOX_CMD_SIZE);
2251                 }
2252
2253                 /* First copy mbox command data to HBA SLIM, skip past first
2254                    word */
2255                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
2256                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
2257                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
2258
2259                 /* Next copy over first word, with mbxOwner set */
2260                 ldata = *((volatile uint32_t *)mb);
2261                 to_slim = phba->MBslimaddr;
2262                 writel(ldata, to_slim);
2263                 readl(to_slim); /* flush */
2264
2265                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2266                         /* switch over to host mailbox */
2267                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
2268                 }
2269         }
2270
2271         wmb();
2272         /* interrupt board to doit right away */
2273         writel(CA_MBATT, phba->CAregaddr);
2274         readl(phba->CAregaddr); /* flush */
2275
2276         switch (flag) {
2277         case MBX_NOWAIT:
2278                 /* Don't wait for it to finish, just return */
2279                 psli->mbox_active = pmbox;
2280                 break;
2281
2282         case MBX_POLL:
2283                 psli->mbox_active = NULL;
2284                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2285                         /* First read mbox status word */
2286                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
2287                         word0 = le32_to_cpu(word0);
2288                 } else {
2289                         /* First read mbox status word */
2290                         word0 = readl(phba->MBslimaddr);
2291                 }
2292
2293                 /* Read the HBA Host Attention Register */
2294                 ha_copy = readl(phba->HAregaddr);
2295
2296                 i = lpfc_mbox_tmo_val(phba, mb->mbxCommand);
2297                 i *= 1000; /* Convert to ms */
2298
2299                 /* Wait for command to complete */
2300                 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
2301                        (!(ha_copy & HA_MBATT) &&
2302                         (phba->hba_state > LPFC_WARM_START))) {
2303                         if (i-- <= 0) {
2304                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2305                                 spin_unlock_irqrestore(phba->host->host_lock,
2306                                                        drvr_flag);
2307                                 return (MBX_NOT_FINISHED);
2308                         }
2309
2310                         /* Check if we took a mbox interrupt while we were
2311                            polling */
2312                         if (((word0 & OWN_CHIP) != OWN_CHIP)
2313                             && (evtctr != psli->slistat.mbox_event))
2314                                 break;
2315
2316                         spin_unlock_irqrestore(phba->host->host_lock,
2317                                                drvr_flag);
2318
2319                         /* Can be in interrupt context, do not sleep */
2320                         /* (or might be called with interrupts disabled) */
2321                         mdelay(1);
2322
2323                         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
2324
2325                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2326                                 /* First copy command data */
2327                                 word0 = *((volatile uint32_t *)
2328                                                 &phba->slim2p->mbx);
2329                                 word0 = le32_to_cpu(word0);
2330                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2331                                         MAILBOX_t *slimmb;
2332                                         volatile uint32_t slimword0;
2333                                         /* Check real SLIM for any errors */
2334                                         slimword0 = readl(phba->MBslimaddr);
2335                                         slimmb = (MAILBOX_t *) & slimword0;
2336                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
2337                                             && slimmb->mbxStatus) {
2338                                                 psli->sli_flag &=
2339                                                     ~LPFC_SLI2_ACTIVE;
2340                                                 word0 = slimword0;
2341                                         }
2342                                 }
2343                         } else {
2344                                 /* First copy command data */
2345                                 word0 = readl(phba->MBslimaddr);
2346                         }
2347                         /* Read the HBA Host Attention Register */
2348                         ha_copy = readl(phba->HAregaddr);
2349                 }
2350
2351                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2352                         /* copy results back to user */
2353                         lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
2354                                         MAILBOX_CMD_SIZE);
2355                 } else {
2356                         /* First copy command data */
2357                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2358                                                         MAILBOX_CMD_SIZE);
2359                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2360                                 pmbox->context2) {
2361                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
2362                                       phba->MBslimaddr + DMP_RSP_OFFSET,
2363                                                       mb->un.varDmp.word_cnt);
2364                         }
2365                 }
2366
2367                 writel(HA_MBATT, phba->HAregaddr);
2368                 readl(phba->HAregaddr); /* flush */
2369
2370                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2371                 status = mb->mbxStatus;
2372         }
2373
2374         spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2375         return (status);
2376 }
2377
2378 static int
2379 lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2380                     struct lpfc_iocbq * piocb)
2381 {
2382         /* Insert the caller's iocb in the txq tail for later processing. */
2383         list_add_tail(&piocb->list, &pring->txq);
2384         pring->txq_cnt++;
2385         return (0);
2386 }
2387
2388 static struct lpfc_iocbq *
2389 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2390                    struct lpfc_iocbq ** piocb)
2391 {
2392         struct lpfc_iocbq * nextiocb;
2393
2394         nextiocb = lpfc_sli_ringtx_get(phba, pring);
2395         if (!nextiocb) {
2396                 nextiocb = *piocb;
2397                 *piocb = NULL;
2398         }
2399
2400         return nextiocb;
2401 }
2402
2403 int
2404 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2405                     struct lpfc_iocbq *piocb, uint32_t flag)
2406 {
2407         struct lpfc_iocbq *nextiocb;
2408         IOCB_t *iocb;
2409
2410         /*
2411          * We should never get an IOCB if we are in a < LINK_DOWN state
2412          */
2413         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2414                 return IOCB_ERROR;
2415
2416         /*
2417          * Check to see if we are blocking IOCB processing because of a
2418          * outstanding mbox command.
2419          */
2420         if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
2421                 goto iocb_busy;
2422
2423         if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
2424                 /*
2425                  * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
2426                  * can be issued if the link is not up.
2427                  */
2428                 switch (piocb->iocb.ulpCommand) {
2429                 case CMD_QUE_RING_BUF_CN:
2430                 case CMD_QUE_RING_BUF64_CN:
2431                         /*
2432                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2433                          * completion, iocb_cmpl MUST be 0.
2434                          */
2435                         if (piocb->iocb_cmpl)
2436                                 piocb->iocb_cmpl = NULL;
2437                         /*FALLTHROUGH*/
2438                 case CMD_CREATE_XRI_CR:
2439                         break;
2440                 default:
2441                         goto iocb_busy;
2442                 }
2443
2444         /*
2445          * For FCP commands, we must be in a state where we can process link
2446          * attention events.
2447          */
2448         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2449                    !(phba->sli.sli_flag & LPFC_PROCESS_LA)))
2450                 goto iocb_busy;
2451
2452         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2453                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2454                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2455
2456         if (iocb)
2457                 lpfc_sli_update_ring(phba, pring);
2458         else
2459                 lpfc_sli_update_full_ring(phba, pring);
2460
2461         if (!piocb)
2462                 return IOCB_SUCCESS;
2463
2464         goto out_busy;
2465
2466  iocb_busy:
2467         pring->stats.iocb_cmd_delay++;
2468
2469  out_busy:
2470
2471         if (!(flag & SLI_IOCB_RET_IOCB)) {
2472                 lpfc_sli_ringtx_put(phba, pring, piocb);
2473                 return IOCB_SUCCESS;
2474         }
2475
2476         return IOCB_BUSY;
2477 }
2478
2479 static int
2480 lpfc_extra_ring_setup( struct lpfc_hba *phba)
2481 {
2482         struct lpfc_sli *psli;
2483         struct lpfc_sli_ring *pring;
2484
2485         psli = &phba->sli;
2486
2487         /* Adjust cmd/rsp ring iocb entries more evenly */
2488
2489         /* Take some away from the FCP ring */
2490         pring = &psli->ring[psli->fcp_ring];
2491         pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2492         pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2493         pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2494         pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2495
2496         /* and give them to the extra ring */
2497         pring = &psli->ring[psli->extra_ring];
2498
2499         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2500         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2501         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2502         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2503
2504         /* Setup default profile for this ring */
2505         pring->iotag_max = 4096;
2506         pring->num_mask = 1;
2507         pring->prt[0].profile = 0;      /* Mask 0 */
2508         pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
2509         pring->prt[0].type = phba->cfg_multi_ring_type;
2510         pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
2511         return 0;
2512 }
2513
2514 int
2515 lpfc_sli_setup(struct lpfc_hba *phba)
2516 {
2517         int i, totiocb = 0;
2518         struct lpfc_sli *psli = &phba->sli;
2519         struct lpfc_sli_ring *pring;
2520
2521         psli->num_rings = MAX_CONFIGURED_RINGS;
2522         psli->sli_flag = 0;
2523         psli->fcp_ring = LPFC_FCP_RING;
2524         psli->next_ring = LPFC_FCP_NEXT_RING;
2525         psli->extra_ring = LPFC_EXTRA_RING;
2526
2527         psli->iocbq_lookup = NULL;
2528         psli->iocbq_lookup_len = 0;
2529         psli->last_iotag = 0;
2530
2531         for (i = 0; i < psli->num_rings; i++) {
2532                 pring = &psli->ring[i];
2533                 switch (i) {
2534                 case LPFC_FCP_RING:     /* ring 0 - FCP */
2535                         /* numCiocb and numRiocb are used in config_port */
2536                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
2537                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
2538                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2539                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2540                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2541                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2542                         pring->iotag_ctr = 0;
2543                         pring->iotag_max =
2544                             (phba->cfg_hba_queue_depth * 2);
2545                         pring->fast_iotag = pring->iotag_max;
2546                         pring->num_mask = 0;
2547                         break;
2548                 case LPFC_EXTRA_RING:   /* ring 1 - EXTRA */
2549                         /* numCiocb and numRiocb are used in config_port */
2550                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
2551                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
2552                         pring->num_mask = 0;
2553                         break;
2554                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
2555                         /* numCiocb and numRiocb are used in config_port */
2556                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
2557                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
2558                         pring->fast_iotag = 0;
2559                         pring->iotag_ctr = 0;
2560                         pring->iotag_max = 4096;
2561                         pring->num_mask = 4;
2562                         pring->prt[0].profile = 0;      /* Mask 0 */
2563                         pring->prt[0].rctl = FC_ELS_REQ;
2564                         pring->prt[0].type = FC_ELS_DATA;
2565                         pring->prt[0].lpfc_sli_rcv_unsol_event =
2566                             lpfc_els_unsol_event;
2567                         pring->prt[1].profile = 0;      /* Mask 1 */
2568                         pring->prt[1].rctl = FC_ELS_RSP;
2569                         pring->prt[1].type = FC_ELS_DATA;
2570                         pring->prt[1].lpfc_sli_rcv_unsol_event =
2571                             lpfc_els_unsol_event;
2572                         pring->prt[2].profile = 0;      /* Mask 2 */
2573                         /* NameServer Inquiry */
2574                         pring->prt[2].rctl = FC_UNSOL_CTL;
2575                         /* NameServer */
2576                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
2577                         pring->prt[2].lpfc_sli_rcv_unsol_event =
2578                             lpfc_ct_unsol_event;
2579                         pring->prt[3].profile = 0;      /* Mask 3 */
2580                         /* NameServer response */
2581                         pring->prt[3].rctl = FC_SOL_CTL;
2582                         /* NameServer */
2583                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
2584                         pring->prt[3].lpfc_sli_rcv_unsol_event =
2585                             lpfc_ct_unsol_event;
2586                         break;
2587                 }
2588                 totiocb += (pring->numCiocb + pring->numRiocb);
2589         }
2590         if (totiocb > MAX_SLI2_IOCB) {
2591                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
2592                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2593                                 "%d:0462 Too many cmd / rsp ring entries in "
2594                                 "SLI2 SLIM Data: x%x x%x\n",
2595                                 phba->brd_no, totiocb, MAX_SLI2_IOCB);
2596         }
2597         if (phba->cfg_multi_ring_support == 2)
2598                 lpfc_extra_ring_setup(phba);
2599
2600         return 0;
2601 }
2602
2603 int
2604 lpfc_sli_queue_setup(struct lpfc_hba * phba)
2605 {
2606         struct lpfc_sli *psli;
2607         struct lpfc_sli_ring *pring;
2608         int i;
2609
2610         psli = &phba->sli;
2611         spin_lock_irq(phba->host->host_lock);
2612         INIT_LIST_HEAD(&psli->mboxq);
2613         /* Initialize list headers for txq and txcmplq as double linked lists */
2614         for (i = 0; i < psli->num_rings; i++) {
2615                 pring = &psli->ring[i];
2616                 pring->ringno = i;
2617                 pring->next_cmdidx  = 0;
2618                 pring->local_getidx = 0;
2619                 pring->cmdidx = 0;
2620                 INIT_LIST_HEAD(&pring->txq);
2621                 INIT_LIST_HEAD(&pring->txcmplq);
2622                 INIT_LIST_HEAD(&pring->iocb_continueq);
2623                 INIT_LIST_HEAD(&pring->postbufq);
2624         }
2625         spin_unlock_irq(phba->host->host_lock);
2626         return (1);
2627 }
2628
2629 int
2630 lpfc_sli_hba_down(struct lpfc_hba * phba)
2631 {
2632         struct lpfc_sli *psli;
2633         struct lpfc_sli_ring *pring;
2634         LPFC_MBOXQ_t *pmb;
2635         struct lpfc_iocbq *iocb, *next_iocb;
2636         IOCB_t *icmd = NULL;
2637         int i;
2638         unsigned long flags = 0;
2639
2640         psli = &phba->sli;
2641         lpfc_hba_down_prep(phba);
2642
2643         spin_lock_irqsave(phba->host->host_lock, flags);
2644
2645         for (i = 0; i < psli->num_rings; i++) {
2646                 pring = &psli->ring[i];
2647                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
2648
2649                 /*
2650                  * Error everything on the txq since these iocbs have not been
2651                  * given to the FW yet.
2652                  */
2653                 pring->txq_cnt = 0;
2654
2655                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2656                         list_del_init(&iocb->list);
2657                         if (iocb->iocb_cmpl) {
2658                                 icmd = &iocb->iocb;
2659                                 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2660                                 icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
2661                                 spin_unlock_irqrestore(phba->host->host_lock,
2662                                                        flags);
2663                                 (iocb->iocb_cmpl) (phba, iocb, iocb);
2664                                 spin_lock_irqsave(phba->host->host_lock, flags);
2665                         } else
2666                                 lpfc_sli_release_iocbq(phba, iocb);
2667                 }
2668
2669                 INIT_LIST_HEAD(&(pring->txq));
2670
2671         }
2672
2673         spin_unlock_irqrestore(phba->host->host_lock, flags);
2674
2675         /* Return any active mbox cmds */
2676         del_timer_sync(&psli->mbox_tmo);
2677         spin_lock_irqsave(phba->host->host_lock, flags);
2678         phba->work_hba_events &= ~WORKER_MBOX_TMO;
2679         if (psli->mbox_active) {
2680                 pmb = psli->mbox_active;
2681                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2682                 if (pmb->mbox_cmpl) {
2683                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2684                         pmb->mbox_cmpl(phba,pmb);
2685                         spin_lock_irqsave(phba->host->host_lock, flags);
2686                 }
2687         }
2688         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2689         psli->mbox_active = NULL;
2690
2691         /* Return any pending mbox cmds */
2692         while ((pmb = lpfc_mbox_get(phba)) != NULL) {
2693                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2694                 if (pmb->mbox_cmpl) {
2695                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2696                         pmb->mbox_cmpl(phba,pmb);
2697                         spin_lock_irqsave(phba->host->host_lock, flags);
2698                 }
2699         }
2700
2701         INIT_LIST_HEAD(&psli->mboxq);
2702
2703         spin_unlock_irqrestore(phba->host->host_lock, flags);
2704
2705         return 1;
2706 }
2707
2708 void
2709 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
2710 {
2711         uint32_t *src = srcp;
2712         uint32_t *dest = destp;
2713         uint32_t ldata;
2714         int i;
2715
2716         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
2717                 ldata = *src;
2718                 ldata = le32_to_cpu(ldata);
2719                 *dest = ldata;
2720                 src++;
2721                 dest++;
2722         }
2723 }
2724
2725 int
2726 lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2727                          struct lpfc_dmabuf * mp)
2728 {
2729         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
2730            later */
2731         list_add_tail(&mp->list, &pring->postbufq);
2732
2733         pring->postbufq_cnt++;
2734         return 0;
2735 }
2736
2737
2738 struct lpfc_dmabuf *
2739 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2740                          dma_addr_t phys)
2741 {
2742         struct lpfc_dmabuf *mp, *next_mp;
2743         struct list_head *slp = &pring->postbufq;
2744
2745         /* Search postbufq, from the begining, looking for a match on phys */
2746         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
2747                 if (mp->phys == phys) {
2748                         list_del_init(&mp->list);
2749                         pring->postbufq_cnt--;
2750                         return mp;
2751                 }
2752         }
2753
2754         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2755                         "%d:0410 Cannot find virtual addr for mapped buf on "
2756                         "ring %d Data x%llx x%p x%p x%x\n",
2757                         phba->brd_no, pring->ringno, (unsigned long long)phys,
2758                         slp->next, slp->prev, pring->postbufq_cnt);
2759         return NULL;
2760 }
2761
2762 static void
2763 lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2764                            struct lpfc_iocbq * rspiocb)
2765 {
2766         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2767         /* Free the resources associated with the ELS_REQUEST64 IOCB the driver
2768          * just aborted.
2769          * In this case, context2  = cmd,  context2->next = rsp, context3 = bpl
2770          */
2771         if (cmdiocb->context2) {
2772                 buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;
2773
2774                 /* Free the response IOCB before completing the abort
2775                    command.  */
2776                 buf_ptr = NULL;
2777                 list_remove_head((&buf_ptr1->list), buf_ptr,
2778                                  struct lpfc_dmabuf, list);
2779                 if (buf_ptr) {
2780                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2781                         kfree(buf_ptr);
2782                 }
2783                 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2784                 kfree(buf_ptr1);
2785         }
2786
2787         if (cmdiocb->context3) {
2788                 buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
2789                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2790                 kfree(buf_ptr);
2791         }
2792
2793         lpfc_sli_release_iocbq(phba, cmdiocb);
2794         return;
2795 }
2796
2797 int
2798 lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
2799                              struct lpfc_sli_ring * pring,
2800                              struct lpfc_iocbq * cmdiocb)
2801 {
2802         struct lpfc_iocbq *abtsiocbp;
2803         IOCB_t *icmd = NULL;
2804         IOCB_t *iabt = NULL;
2805
2806         /* issue ABTS for this IOCB based on iotag */
2807         abtsiocbp = lpfc_sli_get_iocbq(phba);
2808         if (abtsiocbp == NULL)
2809                 return 0;
2810
2811         iabt = &abtsiocbp->iocb;
2812         icmd = &cmdiocb->iocb;
2813         switch (icmd->ulpCommand) {
2814         case CMD_ELS_REQUEST64_CR:
2815                 /* Even though we abort the ELS command, the firmware may access
2816                  * the BPL or other resources before it processes our
2817                  * ABORT_MXRI64. Thus we must delay reusing the cmdiocb
2818                  * resources till the actual abort request completes.
2819                  */
2820                 abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
2821                 abtsiocbp->context2 = cmdiocb->context2;
2822                 abtsiocbp->context3 = cmdiocb->context3;
2823                 cmdiocb->context2 = NULL;
2824                 cmdiocb->context3 = NULL;
2825                 abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
2826                 break;
2827         default:
2828                 lpfc_sli_release_iocbq(phba, abtsiocbp);
2829                 return 0;
2830         }
2831
2832         iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
2833         iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;
2834
2835         iabt->ulpLe = 1;
2836         iabt->ulpClass = CLASS3;
2837         iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
2838
2839         if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
2840                 lpfc_sli_release_iocbq(phba, abtsiocbp);
2841                 return 0;
2842         }
2843
2844         return 1;
2845 }
2846
2847 static int
2848 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, uint16_t tgt_id,
2849                            uint64_t lun_id, uint32_t ctx,
2850                            lpfc_ctx_cmd ctx_cmd)
2851 {
2852         struct lpfc_scsi_buf *lpfc_cmd;
2853         struct scsi_cmnd *cmnd;
2854         int rc = 1;
2855
2856         if (!(iocbq->iocb_flag &  LPFC_IO_FCP))
2857                 return rc;
2858
2859         lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
2860         cmnd = lpfc_cmd->pCmd;
2861
2862         if (cmnd == NULL)
2863                 return rc;
2864
2865         switch (ctx_cmd) {
2866         case LPFC_CTX_LUN:
2867                 if ((cmnd->device->id == tgt_id) &&
2868                     (cmnd->device->lun == lun_id))
2869                         rc = 0;
2870                 break;
2871         case LPFC_CTX_TGT:
2872                 if (cmnd->device->id == tgt_id)
2873                         rc = 0;
2874                 break;
2875         case LPFC_CTX_CTX:
2876                 if (iocbq->iocb.ulpContext == ctx)
2877                         rc = 0;
2878                 break;
2879         case LPFC_CTX_HOST:
2880                 rc = 0;
2881                 break;
2882         default:
2883                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
2884                         __FUNCTION__, ctx_cmd);
2885                 break;
2886         }
2887
2888         return rc;
2889 }
2890
2891 int
2892 lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2893                 uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
2894 {
2895         struct lpfc_iocbq *iocbq;
2896         int sum, i;
2897
2898         for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
2899                 iocbq = phba->sli.iocbq_lookup[i];
2900
2901                 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2902                                                 0, ctx_cmd) == 0)
2903                         sum++;
2904         }
2905
2906         return sum;
2907 }
2908
2909 void
2910 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2911                            struct lpfc_iocbq * rspiocb)
2912 {
2913         spin_lock_irq(phba->host->host_lock);
2914         lpfc_sli_release_iocbq(phba, cmdiocb);
2915         spin_unlock_irq(phba->host->host_lock);
2916         return;
2917 }
2918
2919 int
2920 lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2921                     uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
2922                     lpfc_ctx_cmd abort_cmd)
2923 {
2924         struct lpfc_iocbq *iocbq;
2925         struct lpfc_iocbq *abtsiocb;
2926         IOCB_t *cmd = NULL;
2927         int errcnt = 0, ret_val = 0;
2928         int i;
2929
2930         for (i = 1; i <= phba->sli.last_iotag; i++) {
2931                 iocbq = phba->sli.iocbq_lookup[i];
2932
2933                 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2934                                                 0, abort_cmd) != 0)
2935                         continue;
2936
2937                 /* issue ABTS for this IOCB based on iotag */
2938                 abtsiocb = lpfc_sli_get_iocbq(phba);
2939                 if (abtsiocb == NULL) {
2940                         errcnt++;
2941                         continue;
2942                 }
2943
2944                 cmd = &iocbq->iocb;
2945                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
2946                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
2947                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
2948                 abtsiocb->iocb.ulpLe = 1;
2949                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
2950
2951                 if (phba->hba_state >= LPFC_LINK_UP)
2952                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
2953                 else
2954                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
2955
2956                 /* Setup callback routine and issue the command. */
2957                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
2958                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
2959                 if (ret_val == IOCB_ERROR) {
2960                         lpfc_sli_release_iocbq(phba, abtsiocb);
2961                         errcnt++;
2962                         continue;
2963                 }
2964         }
2965
2966         return errcnt;
2967 }
2968
2969 static void
2970 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
2971                         struct lpfc_iocbq *cmdiocbq,
2972                         struct lpfc_iocbq *rspiocbq)
2973 {
2974         wait_queue_head_t *pdone_q;
2975         unsigned long iflags;
2976
2977         spin_lock_irqsave(phba->host->host_lock, iflags);
2978         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
2979         if (cmdiocbq->context2 && rspiocbq)
2980                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
2981                        &rspiocbq->iocb, sizeof(IOCB_t));
2982
2983         pdone_q = cmdiocbq->context_un.wait_queue;
2984         spin_unlock_irqrestore(phba->host->host_lock, iflags);
2985         if (pdone_q)
2986                 wake_up(pdone_q);
2987         return;
2988 }
2989
2990 /*
2991  * Issue the caller's iocb and wait for its completion, but no longer than the
2992  * caller's timeout.  Note that iocb_flags is cleared before the
2993  * lpfc_sli_issue_call since the wake routine sets a unique value and by
2994  * definition this is a wait function.
2995  */
2996 int
2997 lpfc_sli_issue_iocb_wait(struct lpfc_hba * phba,
2998                          struct lpfc_sli_ring * pring,
2999                          struct lpfc_iocbq * piocb,
3000                          struct lpfc_iocbq * prspiocbq,
3001                          uint32_t timeout)
3002 {
3003         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3004         long timeleft, timeout_req = 0;
3005         int retval = IOCB_SUCCESS;
3006         uint32_t creg_val;
3007
3008         /*
3009          * If the caller has provided a response iocbq buffer, then context2
3010          * is NULL or its an error.
3011          */
3012         if (prspiocbq) {
3013                 if (piocb->context2)
3014                         return IOCB_ERROR;
3015                 piocb->context2 = prspiocbq;
3016         }
3017
3018         piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
3019         piocb->context_un.wait_queue = &done_q;
3020         piocb->iocb_flag &= ~LPFC_IO_WAKE;
3021
3022         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3023                 creg_val = readl(phba->HCregaddr);
3024                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
3025                 writel(creg_val, phba->HCregaddr);
3026                 readl(phba->HCregaddr); /* flush */
3027         }
3028
3029         retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
3030         if (retval == IOCB_SUCCESS) {
3031                 timeout_req = timeout * HZ;
3032                 spin_unlock_irq(phba->host->host_lock);
3033                 timeleft = wait_event_timeout(done_q,
3034                                 piocb->iocb_flag & LPFC_IO_WAKE,
3035                                 timeout_req);
3036                 spin_lock_irq(phba->host->host_lock);
3037
3038                 if (timeleft == 0) {
3039                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3040                                         "%d:0338 IOCB wait timeout error - no "
3041                                         "wake response Data x%x\n",
3042                                         phba->brd_no, timeout);
3043                         retval = IOCB_TIMEDOUT;
3044                 } else if (!(piocb->iocb_flag & LPFC_IO_WAKE)) {
3045                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3046                                         "%d:0330 IOCB wake NOT set, "
3047                                         "Data x%x x%lx\n", phba->brd_no,
3048                                         timeout, (timeleft / jiffies));
3049                         retval = IOCB_TIMEDOUT;
3050                 } else {
3051                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3052                                         "%d:0331 IOCB wake signaled\n",
3053                                         phba->brd_no);
3054                 }
3055         } else {
3056                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3057                                 "%d:0332 IOCB wait issue failed, Data x%x\n",
3058                                 phba->brd_no, retval);
3059                 retval = IOCB_ERROR;
3060         }
3061
3062         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
3063                 creg_val = readl(phba->HCregaddr);
3064                 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
3065                 writel(creg_val, phba->HCregaddr);
3066                 readl(phba->HCregaddr); /* flush */
3067         }
3068
3069         if (prspiocbq)
3070                 piocb->context2 = NULL;
3071
3072         piocb->context_un.wait_queue = NULL;
3073         piocb->iocb_cmpl = NULL;
3074         return retval;
3075 }
3076
3077 int
3078 lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
3079                          uint32_t timeout)
3080 {
3081         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
3082         DECLARE_WAITQUEUE(wq_entry, current);
3083         uint32_t timeleft = 0;
3084         int retval;
3085
3086         /* The caller must leave context1 empty. */
3087         if (pmboxq->context1 != 0) {
3088                 return (MBX_NOT_FINISHED);
3089         }
3090
3091         /* setup wake call as IOCB callback */
3092         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
3093         /* setup context field to pass wait_queue pointer to wake function  */
3094         pmboxq->context1 = &done_q;
3095
3096         /* start to sleep before we wait, to avoid races */
3097         set_current_state(TASK_INTERRUPTIBLE);
3098         add_wait_queue(&done_q, &wq_entry);
3099
3100         /* now issue the command */
3101         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3102
3103         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
3104                 timeleft = schedule_timeout(timeout * HZ);
3105                 pmboxq->context1 = NULL;
3106                 /* if schedule_timeout returns 0, we timed out and were not
3107                    woken up */
3108                 if ((timeleft == 0) || signal_pending(current))
3109                         retval = MBX_TIMEOUT;
3110                 else
3111                         retval = MBX_SUCCESS;
3112         }
3113
3114
3115         set_current_state(TASK_RUNNING);
3116         remove_wait_queue(&done_q, &wq_entry);
3117         return retval;
3118 }
3119
3120 int
3121 lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba)
3122 {
3123         int i = 0;
3124
3125         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !phba->stopped) {
3126                 if (i++ > LPFC_MBOX_TMO * 1000)
3127                         return 1;
3128
3129                 if (lpfc_sli_handle_mb_event(phba) == 0)
3130                         i = 0;
3131
3132                 msleep(1);
3133         }
3134
3135         return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0;
3136 }
3137
3138 irqreturn_t
3139 lpfc_intr_handler(int irq, void *dev_id)
3140 {
3141         struct lpfc_hba *phba;
3142         uint32_t ha_copy;
3143         uint32_t work_ha_copy;
3144         unsigned long status;
3145         int i;
3146         uint32_t control;
3147
3148         /*
3149          * Get the driver's phba structure from the dev_id and
3150          * assume the HBA is not interrupting.
3151          */
3152         phba = (struct lpfc_hba *) dev_id;
3153
3154         if (unlikely(!phba))
3155                 return IRQ_NONE;
3156
3157         phba->sli.slistat.sli_intr++;
3158
3159         /*
3160          * Call the HBA to see if it is interrupting.  If not, don't claim
3161          * the interrupt
3162          */
3163
3164         /* Ignore all interrupts during initialization. */
3165         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
3166                 return IRQ_NONE;
3167
3168         /*
3169          * Read host attention register to determine interrupt source
3170          * Clear Attention Sources, except Error Attention (to
3171          * preserve status) and Link Attention
3172          */
3173         spin_lock(phba->host->host_lock);
3174         ha_copy = readl(phba->HAregaddr);
3175         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
3176         readl(phba->HAregaddr); /* flush */
3177         spin_unlock(phba->host->host_lock);
3178
3179         if (unlikely(!ha_copy))
3180                 return IRQ_NONE;
3181
3182         work_ha_copy = ha_copy & phba->work_ha_mask;
3183
3184         if (unlikely(work_ha_copy)) {
3185                 if (work_ha_copy & HA_LATT) {
3186                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
3187                                 /*
3188                                  * Turn off Link Attention interrupts
3189                                  * until CLEAR_LA done
3190                                  */
3191                                 spin_lock(phba->host->host_lock);
3192                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
3193                                 control = readl(phba->HCregaddr);
3194                                 control &= ~HC_LAINT_ENA;
3195                                 writel(control, phba->HCregaddr);
3196                                 readl(phba->HCregaddr); /* flush */
3197                                 spin_unlock(phba->host->host_lock);
3198                         }
3199                         else
3200                                 work_ha_copy &= ~HA_LATT;
3201                 }
3202
3203                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
3204                         for (i = 0; i < phba->sli.num_rings; i++) {
3205                                 if (work_ha_copy & (HA_RXATT << (4*i))) {
3206                                         /*
3207                                          * Turn off Slow Rings interrupts
3208                                          */
3209                                         spin_lock(phba->host->host_lock);
3210                                         control = readl(phba->HCregaddr);
3211                                         control &= ~(HC_R0INT_ENA << i);
3212                                         writel(control, phba->HCregaddr);
3213                                         readl(phba->HCregaddr); /* flush */
3214                                         spin_unlock(phba->host->host_lock);
3215                                 }
3216                         }
3217                 }
3218
3219                 if (work_ha_copy & HA_ERATT) {
3220                         phba->hba_state = LPFC_HBA_ERROR;
3221                         /*
3222                          * There was a link/board error.  Read the
3223                          * status register to retrieve the error event
3224                          * and process it.
3225                          */
3226                         phba->sli.slistat.err_attn_event++;
3227                         /* Save status info */
3228                         phba->work_hs = readl(phba->HSregaddr);
3229                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
3230                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
3231
3232                         /* Clear Chip error bit */
3233                         writel(HA_ERATT, phba->HAregaddr);
3234                         readl(phba->HAregaddr); /* flush */
3235                         phba->stopped = 1;
3236                 }
3237
3238                 spin_lock(phba->host->host_lock);
3239                 phba->work_ha |= work_ha_copy;
3240                 if (phba->work_wait)
3241                         wake_up(phba->work_wait);
3242                 spin_unlock(phba->host->host_lock);
3243         }
3244
3245         ha_copy &= ~(phba->work_ha_mask);
3246
3247         /*
3248          * Process all events on FCP ring.  Take the optimized path for
3249          * FCP IO.  Any other IO is slow path and is handled by
3250          * the worker thread.
3251          */
3252         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
3253         status >>= (4*LPFC_FCP_RING);
3254         if (status & HA_RXATT)
3255                 lpfc_sli_handle_fast_ring_event(phba,
3256                                                 &phba->sli.ring[LPFC_FCP_RING],
3257                                                 status);
3258
3259         if (phba->cfg_multi_ring_support == 2) {
3260                 /*
3261                  * Process all events on extra ring.  Take the optimized path
3262                  * for extra ring IO.  Any other IO is slow path and is handled
3263                  * by the worker thread.
3264                  */
3265                 status = (ha_copy & (HA_RXMASK  << (4*LPFC_EXTRA_RING)));
3266                 status >>= (4*LPFC_EXTRA_RING);
3267                 if (status & HA_RXATT) {
3268                         lpfc_sli_handle_fast_ring_event(phba,
3269                                         &phba->sli.ring[LPFC_EXTRA_RING],
3270                                         status);
3271                 }
3272         }
3273         return IRQ_HANDLED;
3274
3275 } /* lpfc_intr_handler */