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