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