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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) 2004-2005 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         uint16_t iotag;
 195
 196         list_add_tail(&piocb->list, &pring->txcmplq);
 197         pring->txcmplq_cnt++;
 198         if (unlikely(pring->ringno == LPFC_ELS_RING))
 199                 mod_timer(&phba->els_tmofunc,
 200                                         jiffies + HZ * (phba->fc_ratov << 1));
 201
 202         if (pring->fast_lookup) {
 203                 /* Setup fast lookup based on iotag for completion */
 204                 iotag = piocb->iocb.ulpIoTag;
 205                 if (iotag && (iotag < pring->fast_iotag))
 206                         *(pring->fast_lookup + iotag) = piocb;
 207                 else {
 208
 209                         /* Cmd ring <ringno> put: iotag <iotag> greater then
 210                            configured max <fast_iotag> wd0 <icmd> */
 211                         lpfc_printf_log(phba,
 212                                         KERN_ERR,
 213                                         LOG_SLI,
 214                                         "%d:0316 Cmd ring %d put: iotag x%x "
 215                                         "greater then configured max x%x "
 216                                         "wd0 x%x\n",
 217                                         phba->brd_no,
 218                                         pring->ringno, iotag,
 219                                         pring->fast_iotag,
 220                                         *(((uint32_t *)(&piocb->iocb)) + 7));
 221                 }
 222         }
 223         return (0);
 224 }
 225
 226 static struct lpfc_iocbq *
 227 lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
 228 {
 229         struct list_head *dlp;
 230         struct lpfc_iocbq *cmd_iocb;
 231
 232         dlp = &pring->txq;
 233         cmd_iocb = NULL;
 234         list_remove_head((&pring->txq), cmd_iocb,
 235                          struct lpfc_iocbq,
 236                          list);
 237         if (cmd_iocb) {
 238                 /* If the first ptr is not equal to the list header,
 239                  * deque the IOCBQ_t and return it.
 240                  */
 241                 pring->txq_cnt--;
 242         }
 243         return (cmd_iocb);
 244 }
 245
 246 static IOCB_t *
 247 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
 248 {
 249         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
 250         uint32_t  max_cmd_idx = pring->numCiocb;
 251         IOCB_t *iocb = NULL;
 252
 253         if ((pring->next_cmdidx == pring->cmdidx) &&
 254            (++pring->next_cmdidx >= max_cmd_idx))
 255                 pring->next_cmdidx = 0;
 256
 257         if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
 258
 259                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
 260
 261                 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
 262                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 263                                         "%d:0315 Ring %d issue: portCmdGet %d "
 264                                         "is bigger then cmd ring %d\n",
 265                                         phba->brd_no, pring->ringno,
 266                                         pring->local_getidx, max_cmd_idx);
 267
 268                         phba->hba_state = LPFC_HBA_ERROR;
 269                         /*
 270                          * All error attention handlers are posted to
 271                          * worker thread
 272                          */
 273                         phba->work_ha |= HA_ERATT;
 274                         phba->work_hs = HS_FFER3;
 275                         if (phba->work_wait)
 276                                 wake_up(phba->work_wait);
 277
 278                         return NULL;
 279                 }
 280
 281                 if (pring->local_getidx == pring->next_cmdidx)
 282                         return NULL;
 283         }
 284
 285         iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx);
 286
 287         return iocb;
 288 }
 289
 290 uint16_t
 291 lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
 292 {
 293         struct lpfc_iocbq ** new_arr;
 294         struct lpfc_iocbq ** old_arr;
 295         size_t new_len;
 296         struct lpfc_sli *psli = &phba->sli;
 297         uint16_t iotag;
 298
 299         spin_lock_irq(phba->host->host_lock);
 300         iotag = psli->last_iotag;
 301         if(++iotag < psli->iocbq_lookup_len) {
 302                 psli->last_iotag = iotag;
 303                 psli->iocbq_lookup[iotag] = iocbq;
 304                 spin_unlock_irq(phba->host->host_lock);
 305                 iocbq->iotag = iotag;
 306                 return iotag;
 307         }
 308         else if (psli->iocbq_lookup_len < (0xffff
 309                                            - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
 310                 new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
 311                 spin_unlock_irq(phba->host->host_lock);
 312                 new_arr = kmalloc(new_len * sizeof (struct lpfc_iocbq *),
 313                                   GFP_KERNEL);
 314                 if (new_arr) {
 315                         memset((char *)new_arr, 0,
 316                                new_len * sizeof (struct lpfc_iocbq *));
 317                         spin_lock_irq(phba->host->host_lock);
 318                         old_arr = psli->iocbq_lookup;
 319                         if (new_len <= psli->iocbq_lookup_len) {
 320                                 /* highly unprobable case */
 321                                 kfree(new_arr);
 322                                 iotag = psli->last_iotag;
 323                                 if(++iotag < psli->iocbq_lookup_len) {
 324                                         psli->last_iotag = iotag;
 325                                         psli->iocbq_lookup[iotag] = iocbq;
 326                                         spin_unlock_irq(phba->host->host_lock);
 327                                         iocbq->iotag = iotag;
 328                                         return iotag;
 329                                 }
 330                                 spin_unlock_irq(phba->host->host_lock);
 331                                 return 0;
 332                         }
 333                         if (psli->iocbq_lookup)
 334                                 memcpy(new_arr, old_arr,
 335                                        ((psli->last_iotag  + 1) *
 336                                         sizeof (struct lpfc_iocbq *)));
 337                         psli->iocbq_lookup = new_arr;
 338                         psli->iocbq_lookup_len = new_len;
 339                         psli->last_iotag = iotag;
 340                         psli->iocbq_lookup[iotag] = iocbq;
 341                         spin_unlock_irq(phba->host->host_lock);
 342                         iocbq->iotag = iotag;
 343                         kfree(old_arr);
 344                         return iotag;
 345                 }
 346         }
 347
 348         lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
 349                         "%d:0318 Failed to allocate IOTAG.last IOTAG is %d\n",
 350                         phba->brd_no, psli->last_iotag);
 351
 352         return 0;
 353 }
 354
 355 static void
 356 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 357                 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
 358 {
 359         /*
 360          * Set up an iotag
 361          */
 362         nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
 363
 364         /*
 365          * Issue iocb command to adapter
 366          */
 367         lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t));
 368         wmb();
 369         pring->stats.iocb_cmd++;
 370
 371         /*
 372          * If there is no completion routine to call, we can release the
 373          * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
 374          * that have no rsp ring completion, iocb_cmpl MUST be NULL.
 375          */
 376         if (nextiocb->iocb_cmpl)
 377                 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
 378         else
 379                 lpfc_sli_release_iocbq(phba, nextiocb);
 380
 381         /*
 382          * Let the HBA know what IOCB slot will be the next one the
 383          * driver will put a command into.
 384          */
 385         pring->cmdidx = pring->next_cmdidx;
 386         writel(pring->cmdidx, phba->MBslimaddr
 387                + (SLIMOFF + (pring->ringno * 2)) * 4);
 388 }
 389
 390 static void
 391 lpfc_sli_update_full_ring(struct lpfc_hba * phba,
 392                           struct lpfc_sli_ring *pring)
 393 {
 394         int ringno = pring->ringno;
 395
 396         pring->flag |= LPFC_CALL_RING_AVAILABLE;
 397
 398         wmb();
 399
 400         /*
 401          * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
 402          * The HBA will tell us when an IOCB entry is available.
 403          */
 404         writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
 405         readl(phba->CAregaddr); /* flush */
 406
 407         pring->stats.iocb_cmd_full++;
 408 }
 409
 410 static void
 411 lpfc_sli_update_ring(struct lpfc_hba * phba,
 412                      struct lpfc_sli_ring *pring)
 413 {
 414         int ringno = pring->ringno;
 415
 416         /*
 417          * Tell the HBA that there is work to do in this ring.
 418          */
 419         wmb();
 420         writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
 421         readl(phba->CAregaddr); /* flush */
 422 }
 423
 424 static void
 425 lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
 426 {
 427         IOCB_t *iocb;
 428         struct lpfc_iocbq *nextiocb;
 429
 430         /*
 431          * Check to see if:
 432          *  (a) there is anything on the txq to send
 433          *  (b) link is up
 434          *  (c) link attention events can be processed (fcp ring only)
 435          *  (d) IOCB processing is not blocked by the outstanding mbox command.
 436          */
 437         if (pring->txq_cnt &&
 438             (phba->hba_state > LPFC_LINK_DOWN) &&
 439             (pring->ringno != phba->sli.fcp_ring ||
 440              phba->sli.sli_flag & LPFC_PROCESS_LA) &&
 441             !(pring->flag & LPFC_STOP_IOCB_MBX)) {
 442
 443                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
 444                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
 445                         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
 446
 447                 if (iocb)
 448                         lpfc_sli_update_ring(phba, pring);
 449                 else
 450                         lpfc_sli_update_full_ring(phba, pring);
 451         }
 452
 453         return;
 454 }
 455
 456 /* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
 457 static void
 458 lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
 459 {
 460         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno];
 461
 462         /* If the ring is active, flag it */
 463         if (phba->sli.ring[ringno].cmdringaddr) {
 464                 if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
 465                         phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
 466                         /*
 467                          * Force update of the local copy of cmdGetInx
 468                          */
 469                         phba->sli.ring[ringno].local_getidx
 470                                 = le32_to_cpu(pgp->cmdGetInx);
 471                         spin_lock_irq(phba->host->host_lock);
 472                         lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
 473                         spin_unlock_irq(phba->host->host_lock);
 474                 }
 475         }
 476 }
 477
 478 static int
 479 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
 480 {
 481         uint8_t ret;
 482
 483         switch (mbxCommand) {
 484         case MBX_LOAD_SM:
 485         case MBX_READ_NV:
 486         case MBX_WRITE_NV:
 487         case MBX_RUN_BIU_DIAG:
 488         case MBX_INIT_LINK:
 489         case MBX_DOWN_LINK:
 490         case MBX_CONFIG_LINK:
 491         case MBX_CONFIG_RING:
 492         case MBX_RESET_RING:
 493         case MBX_READ_CONFIG:
 494         case MBX_READ_RCONFIG:
 495         case MBX_READ_SPARM:
 496         case MBX_READ_STATUS:
 497         case MBX_READ_RPI:
 498         case MBX_READ_XRI:
 499         case MBX_READ_REV:
 500         case MBX_READ_LNK_STAT:
 501         case MBX_REG_LOGIN:
 502         case MBX_UNREG_LOGIN:
 503         case MBX_READ_LA:
 504         case MBX_CLEAR_LA:
 505         case MBX_DUMP_MEMORY:
 506         case MBX_DUMP_CONTEXT:
 507         case MBX_RUN_DIAGS:
 508         case MBX_RESTART:
 509         case MBX_UPDATE_CFG:
 510         case MBX_DOWN_LOAD:
 511         case MBX_DEL_LD_ENTRY:
 512         case MBX_RUN_PROGRAM:
 513         case MBX_SET_MASK:
 514         case MBX_SET_SLIM:
 515         case MBX_UNREG_D_ID:
 516         case MBX_CONFIG_FARP:
 517         case MBX_LOAD_AREA:
 518         case MBX_RUN_BIU_DIAG64:
 519         case MBX_CONFIG_PORT:
 520         case MBX_READ_SPARM64:
 521         case MBX_READ_RPI64:
 522         case MBX_REG_LOGIN64:
 523         case MBX_READ_LA64:
 524         case MBX_FLASH_WR_ULA:
 525         case MBX_SET_DEBUG:
 526         case MBX_LOAD_EXP_ROM:
 527                 ret = mbxCommand;
 528                 break;
 529         default:
 530                 ret = MBX_SHUTDOWN;
 531                 break;
 532         }
 533         return (ret);
 534 }
 535 static void
 536 lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 537 {
 538         wait_queue_head_t *pdone_q;
 539
 540         /*
 541          * If pdone_q is empty, the driver thread gave up waiting and
 542          * continued running.
 543          */
 544         pdone_q = (wait_queue_head_t *) pmboxq->context1;
 545         if (pdone_q)
 546                 wake_up_interruptible(pdone_q);
 547         return;
 548 }
 549
 550 void
 551 lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 552 {
 553         struct lpfc_dmabuf *mp;
 554         mp = (struct lpfc_dmabuf *) (pmb->context1);
 555         if (mp) {
 556                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 557                 kfree(mp);
 558         }
 559         mempool_free( pmb, phba->mbox_mem_pool);
 560         return;
 561 }
 562
 563 int
 564 lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
 565 {
 566         MAILBOX_t *mbox;
 567         MAILBOX_t *pmbox;
 568         LPFC_MBOXQ_t *pmb;
 569         struct lpfc_sli *psli;
 570         int i, rc;
 571         uint32_t process_next;
 572
 573         psli = &phba->sli;
 574         /* We should only get here if we are in SLI2 mode */
 575         if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
 576                 return (1);
 577         }
 578
 579         phba->sli.slistat.mbox_event++;
 580
 581         /* Get a Mailbox buffer to setup mailbox commands for callback */
 582         if ((pmb = phba->sli.mbox_active)) {
 583                 pmbox = &pmb->mb;
 584                 mbox = &phba->slim2p->mbx;
 585
 586                 /* First check out the status word */
 587                 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
 588
 589                 /* Sanity check to ensure the host owns the mailbox */
 590                 if (pmbox->mbxOwner != OWN_HOST) {
 591                         /* Lets try for a while */
 592                         for (i = 0; i < 10240; i++) {
 593                                 /* First copy command data */
 594                                 lpfc_sli_pcimem_bcopy(mbox, pmbox,
 595                                                         sizeof (uint32_t));
 596                                 if (pmbox->mbxOwner == OWN_HOST)
 597                                         goto mbout;
 598                         }
 599                         /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
 600                            <status> */
 601                         lpfc_printf_log(phba,
 602                                         KERN_ERR,
 603                                         LOG_MBOX | LOG_SLI,
 604                                         "%d:0304 Stray Mailbox Interrupt "
 605                                         "mbxCommand x%x mbxStatus x%x\n",
 606                                         phba->brd_no,
 607                                         pmbox->mbxCommand,
 608                                         pmbox->mbxStatus);
 609
 610                         spin_lock_irq(phba->host->host_lock);
 611                         phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
 612                         spin_unlock_irq(phba->host->host_lock);
 613                         return (1);
 614                 }
 615
 616               mbout:
 617                 del_timer_sync(&phba->sli.mbox_tmo);
 618                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
 619
 620                 /*
 621                  * It is a fatal error if unknown mbox command completion.
 622                  */
 623                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
 624                     MBX_SHUTDOWN) {
 625
 626                         /* Unknow mailbox command compl */
 627                         lpfc_printf_log(phba,
 628                                 KERN_ERR,
 629                                 LOG_MBOX | LOG_SLI,
 630                                 "%d:0323 Unknown Mailbox command %x Cmpl\n",
 631                                 phba->brd_no,
 632                                 pmbox->mbxCommand);
 633                         phba->hba_state = LPFC_HBA_ERROR;
 634                         phba->work_hs = HS_FFER3;
 635                         lpfc_handle_eratt(phba);
 636                         return (0);
 637                 }
 638
 639                 phba->sli.mbox_active = NULL;
 640                 if (pmbox->mbxStatus) {
 641                         phba->sli.slistat.mbox_stat_err++;
 642                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
 643                                 /* Mbox cmd cmpl error - RETRYing */
 644                                 lpfc_printf_log(phba,
 645                                         KERN_INFO,
 646                                         LOG_MBOX | LOG_SLI,
 647                                         "%d:0305 Mbox cmd cmpl error - "
 648                                         "RETRYing Data: x%x x%x x%x x%x\n",
 649                                         phba->brd_no,
 650                                         pmbox->mbxCommand,
 651                                         pmbox->mbxStatus,
 652                                         pmbox->un.varWords[0],
 653                                         phba->hba_state);
 654                                 pmbox->mbxStatus = 0;
 655                                 pmbox->mbxOwner = OWN_HOST;
 656                                 spin_lock_irq(phba->host->host_lock);
 657                                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 658                                 spin_unlock_irq(phba->host->host_lock);
 659                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 660                                 if (rc == MBX_SUCCESS)
 661                                         return (0);
 662                         }
 663                 }
 664
 665                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
 666                 lpfc_printf_log(phba,
 667                                 KERN_INFO,
 668                                 LOG_MBOX | LOG_SLI,
 669                                 "%d:0307 Mailbox cmd x%x Cmpl x%p "
 670                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
 671                                 phba->brd_no,
 672                                 pmbox->mbxCommand,
 673                                 pmb->mbox_cmpl,
 674                                 *((uint32_t *) pmbox),
 675                                 pmbox->un.varWords[0],
 676                                 pmbox->un.varWords[1],
 677                                 pmbox->un.varWords[2],
 678                                 pmbox->un.varWords[3],
 679                                 pmbox->un.varWords[4],
 680                                 pmbox->un.varWords[5],
 681                                 pmbox->un.varWords[6],
 682                                 pmbox->un.varWords[7]);
 683
 684                 if (pmb->mbox_cmpl) {
 685                         lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
 686                         pmb->mbox_cmpl(phba,pmb);
 687                 }
 688         }
 689
 690
 691         do {
 692                 process_next = 0;       /* by default don't loop */
 693                 spin_lock_irq(phba->host->host_lock);
 694                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 695
 696                 /* Process next mailbox command if there is one */
 697                 if ((pmb = lpfc_mbox_get(phba))) {
 698                         spin_unlock_irq(phba->host->host_lock);
 699                         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 700                         if (rc == MBX_NOT_FINISHED) {
 701                                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
 702                                 pmb->mbox_cmpl(phba,pmb);
 703                                 process_next = 1;
 704                                 continue;       /* loop back */
 705                         }
 706                 } else {
 707                         spin_unlock_irq(phba->host->host_lock);
 708                         /* Turn on IOCB processing */
 709                         for (i = 0; i < phba->sli.num_rings; i++) {
 710                                 lpfc_sli_turn_on_ring(phba, i);
 711                         }
 712
 713                         /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
 714                         while (!list_empty(&phba->freebufList)) {
 715                                 struct lpfc_dmabuf *mp;
 716
 717                                 mp = NULL;
 718                                 list_remove_head((&phba->freebufList),
 719                                                  mp,
 720                                                  struct lpfc_dmabuf,
 721                                                  list);
 722                                 if (mp) {
 723                                         lpfc_mbuf_free(phba, mp->virt,
 724                                                        mp->phys);
 725                                         kfree(mp);
 726                                 }
 727                         }
 728                 }
 729
 730         } while (process_next);
 731
 732         return (0);
 733 }
 734 static int
 735 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 736                             struct lpfc_iocbq *saveq)
 737 {
 738         IOCB_t           * irsp;
 739         WORD5            * w5p;
 740         uint32_t           Rctl, Type;
 741         uint32_t           match, i;
 742
 743         match = 0;
 744         irsp = &(saveq->iocb);
 745         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
 746             || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
 747                 Rctl = FC_ELS_REQ;
 748                 Type = FC_ELS_DATA;
 749         } else {
 750                 w5p =
 751                     (WORD5 *) & (saveq->iocb.un.
 752                                  ulpWord[5]);
 753                 Rctl = w5p->hcsw.Rctl;
 754                 Type = w5p->hcsw.Type;
 755
 756                 /* Firmware Workaround */
 757                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
 758                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
 759                         Rctl = FC_ELS_REQ;
 760                         Type = FC_ELS_DATA;
 761                         w5p->hcsw.Rctl = Rctl;
 762                         w5p->hcsw.Type = Type;
 763                 }
 764         }
 765         /* unSolicited Responses */
 766         if (pring->prt[0].profile) {
 767                 (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq);
 768                 match = 1;
 769         } else {
 770                 /* We must search, based on rctl / type
 771                    for the right routine */
 772                 for (i = 0; i < pring->num_mask;
 773                      i++) {
 774                         if ((pring->prt[i].rctl ==
 775                              Rctl)
 776                             && (pring->prt[i].
 777                                 type == Type)) {
 778                                 (pring->prt[i].lpfc_sli_rcv_unsol_event)
 779                                         (phba, pring, saveq);
 780                                 match = 1;
 781                                 break;
 782                         }
 783                 }
 784         }
 785         if (match == 0) {
 786                 /* Unexpected Rctl / Type received */
 787                 /* Ring <ringno> handler: unexpected
 788                    Rctl <Rctl> Type <Type> received */
 789                 lpfc_printf_log(phba,
 790                                 KERN_WARNING,
 791                                 LOG_SLI,
 792                                 "%d:0313 Ring %d handler: unexpected Rctl x%x "
 793                                 "Type x%x received \n",
 794                                 phba->brd_no,
 795                                 pring->ringno,
 796                                 Rctl,
 797                                 Type);
 798         }
 799         return(1);
 800 }
 801
 802 static struct lpfc_iocbq *
 803 lpfc_sli_iocbq_lookup(struct lpfc_hba * phba,
 804                       struct lpfc_sli_ring * pring,
 805                       struct lpfc_iocbq * prspiocb)
 806 {
 807         struct lpfc_iocbq *cmd_iocb = NULL;
 808         uint16_t iotag;
 809
 810         iotag = prspiocb->iocb.ulpIoTag;
 811
 812         if (iotag != 0 && iotag <= phba->sli.last_iotag) {
 813                 cmd_iocb = phba->sli.iocbq_lookup[iotag];
 814                 list_del(&cmd_iocb->list);
 815                 pring->txcmplq_cnt--;
 816                 return cmd_iocb;
 817         }
 818
 819         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 820                         "%d:0317 iotag x%x is out off "
 821                         "range: max iotag x%x wd0 x%x\n",
 822                         phba->brd_no, iotag,
 823                         phba->sli.last_iotag,
 824                         *(((uint32_t *) &prspiocb->iocb) + 7));
 825         return NULL;
 826 }
 827
 828 static int
 829 lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
 830                           struct lpfc_iocbq *saveq)
 831 {
 832         struct lpfc_iocbq * cmdiocbp;
 833         int rc = 1;
 834         unsigned long iflag;
 835
 836         /* Based on the iotag field, get the cmd IOCB from the txcmplq */
 837         spin_lock_irqsave(phba->host->host_lock, iflag);
 838         cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
 839         if (cmdiocbp) {
 840                 if (cmdiocbp->iocb_cmpl) {
 841                         /*
 842                          * Post all ELS completions to the worker thread.
 843                          * All other are passed to the completion callback.
 844                          */
 845                         if (pring->ringno == LPFC_ELS_RING) {
 846                                 spin_unlock_irqrestore(phba->host->host_lock,
 847                                                        iflag);
 848                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
 849                                 spin_lock_irqsave(phba->host->host_lock, iflag);
 850                         }
 851                         else {
 852                                 spin_unlock_irqrestore(phba->host->host_lock,
 853                                                        iflag);
 854                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
 855                                 spin_lock_irqsave(phba->host->host_lock, iflag);
 856                         }
 857                 } else
 858                         lpfc_sli_release_iocbq(phba, cmdiocbp);
 859         } else {
 860                 /*
 861                  * Unknown initiating command based on the response iotag.
 862                  * This could be the case on the ELS ring because of
 863                  * lpfc_els_abort().
 864                  */
 865                 if (pring->ringno != LPFC_ELS_RING) {
 866                         /*
 867                          * Ring <ringno> handler: unexpected completion IoTag
 868                          * <IoTag>
 869                          */
 870                         lpfc_printf_log(phba,
 871                                 KERN_WARNING,
 872                                 LOG_SLI,
 873                                 "%d:0322 Ring %d handler: unexpected "
 874                                 "completion IoTag x%x Data: x%x x%x x%x x%x\n",
 875                                 phba->brd_no,
 876                                 pring->ringno,
 877                                 saveq->iocb.ulpIoTag,
 878                                 saveq->iocb.ulpStatus,
 879                                 saveq->iocb.un.ulpWord[4],
 880                                 saveq->iocb.ulpCommand,
 881                                 saveq->iocb.ulpContext);
 882                 }
 883         }
 884
 885         spin_unlock_irqrestore(phba->host->host_lock, iflag);
 886         return rc;
 887 }
 888
 889 /*
 890  * This routine presumes LPFC_FCP_RING handling and doesn't bother
 891  * to check it explicitly.
 892  */
 893 static int
 894 lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
 895                                 struct lpfc_sli_ring * pring, uint32_t mask)
 896 {
 897         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
 898         IOCB_t *irsp = NULL;
 899         IOCB_t *entry = NULL;
 900         struct lpfc_iocbq *cmdiocbq = NULL;
 901         struct lpfc_iocbq rspiocbq;
 902         uint32_t status;
 903         uint32_t portRspPut, portRspMax;
 904         int rc = 1;
 905         lpfc_iocb_type type;
 906         unsigned long iflag;
 907         uint32_t rsp_cmpl = 0;
 908         void __iomem  *to_slim;
 909
 910         spin_lock_irqsave(phba->host->host_lock, iflag);
 911         pring->stats.iocb_event++;
 912
 913         /*
 914          * The next available response entry should never exceed the maximum
 915          * entries.  If it does, treat it as an adapter hardware error.
 916          */
 917         portRspMax = pring->numRiocb;
 918         portRspPut = le32_to_cpu(pgp->rspPutInx);
 919         if (unlikely(portRspPut >= portRspMax)) {
 920                 /*
 921                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
 922                  * rsp ring <portRspMax>
 923                  */
 924                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 925                                 "%d:0312 Ring %d handler: portRspPut %d "
 926                                 "is bigger then rsp ring %d\n",
 927                                 phba->brd_no, pring->ringno, portRspPut,
 928                                 portRspMax);
 929
 930                 phba->hba_state = LPFC_HBA_ERROR;
 931
 932                 /* All error attention handlers are posted to worker thread */
 933                 phba->work_ha |= HA_ERATT;
 934                 phba->work_hs = HS_FFER3;
 935                 if (phba->work_wait)
 936                         wake_up(phba->work_wait);
 937
 938                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
 939                 return 1;
 940         }
 941
 942         rmb();
 943         while (pring->rspidx != portRspPut) {
 944                 /*
 945                  * Fetch an entry off the ring and copy it into a local data
 946                  * structure.  The copy involves a byte-swap since the
 947                  * network byte order and pci byte orders are different.
 948                  */
 949                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
 950                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
 951                                       (uint32_t *) &rspiocbq.iocb,
 952                                       sizeof (IOCB_t));
 953                 irsp = &rspiocbq.iocb;
 954
 955                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
 956                 pring->stats.iocb_rsp++;
 957                 rsp_cmpl++;
 958
 959                 if (unlikely(irsp->ulpStatus)) {
 960                         /* Rsp ring <ringno> error: IOCB */
 961                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
 962                                 "%d:0326 Rsp Ring %d error: IOCB Data: "
 963                                 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
 964                                 phba->brd_no, pring->ringno,
 965                                 irsp->un.ulpWord[0], irsp->un.ulpWord[1],
 966                                 irsp->un.ulpWord[2], irsp->un.ulpWord[3],
 967                                 irsp->un.ulpWord[4], irsp->un.ulpWord[5],
 968                                 *(((uint32_t *) irsp) + 6),
 969                                 *(((uint32_t *) irsp) + 7));
 970                 }
 971
 972                 switch (type) {
 973                 case LPFC_ABORT_IOCB:
 974                 case LPFC_SOL_IOCB:
 975                         /*
 976                          * Idle exchange closed via ABTS from port.  No iocb
 977                          * resources need to be recovered.
 978                          */
 979                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
 980                                 printk(KERN_INFO "%s: IOCB cmd 0x%x processed. "
 981                                        "Skipping completion\n", __FUNCTION__,
 982                                        irsp->ulpCommand);
 983                                 break;
 984                         }
 985
 986                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
 987                                                          &rspiocbq);
 988                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
 989                                 spin_unlock_irqrestore(
 990                                        phba->host->host_lock, iflag);
 991                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
 992                                                       &rspiocbq);
 993                                 spin_lock_irqsave(phba->host->host_lock,
 994                                                   iflag);
 995                         }
 996                         break;
 997                 default:
 998                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
 999                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1000                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1001                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1002                                        MAX_MSG_DATA);
1003                                 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1004                                          phba->brd_no, adaptermsg);
1005                         } else {
1006                                 /* Unknown IOCB command */
1007                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1008                                         "%d:0321 Unknown IOCB command "
1009                                         "Data: x%x, x%x x%x x%x x%x\n",
1010                                         phba->brd_no, type, irsp->ulpCommand,
1011                                         irsp->ulpStatus, irsp->ulpIoTag,
1012                                         irsp->ulpContext);
1013                         }
1014                         break;
1015                 }
1016
1017                 /*
1018                  * The response IOCB has been processed.  Update the ring
1019                  * pointer in SLIM.  If the port response put pointer has not
1020                  * been updated, sync the pgp->rspPutInx and fetch the new port
1021                  * response put pointer.
1022                  */
1023                 if (++pring->rspidx >= portRspMax)
1024                         pring->rspidx = 0;
1025
1026                 to_slim = phba->MBslimaddr +
1027                         (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1028                 writel(pring->rspidx, to_slim);
1029
1030                 if (pring->rspidx == portRspPut)
1031                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1032         }
1033
1034         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1035                 pring->stats.iocb_rsp_full++;
1036                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1037                 writel(status, phba->CAregaddr);
1038                 readl(phba->CAregaddr);
1039         }
1040         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1041                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1042                 pring->stats.iocb_cmd_empty++;
1043
1044                 /* Force update of the local copy of cmdGetInx */
1045                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1046                 lpfc_sli_resume_iocb(phba, pring);
1047
1048                 if ((pring->lpfc_sli_cmd_available))
1049                         (pring->lpfc_sli_cmd_available) (phba, pring);
1050
1051         }
1052
1053         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1054         return rc;
1055 }
1056
1057
1058 int
1059 lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
1060                            struct lpfc_sli_ring * pring, uint32_t mask)
1061 {
1062         IOCB_t *entry;
1063         IOCB_t *irsp = NULL;
1064         struct lpfc_iocbq *rspiocbp = NULL;
1065         struct lpfc_iocbq *next_iocb;
1066         struct lpfc_iocbq *cmdiocbp;
1067         struct lpfc_iocbq *saveq;
1068         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1069         uint8_t iocb_cmd_type;
1070         lpfc_iocb_type type;
1071         uint32_t status, free_saveq;
1072         uint32_t portRspPut, portRspMax;
1073         int rc = 1;
1074         unsigned long iflag;
1075         void __iomem  *to_slim;
1076
1077         spin_lock_irqsave(phba->host->host_lock, iflag);
1078         pring->stats.iocb_event++;
1079
1080         /*
1081          * The next available response entry should never exceed the maximum
1082          * entries.  If it does, treat it as an adapter hardware error.
1083          */
1084         portRspMax = pring->numRiocb;
1085         portRspPut = le32_to_cpu(pgp->rspPutInx);
1086         if (portRspPut >= portRspMax) {
1087                 /*
1088                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1089                  * rsp ring <portRspMax>
1090                  */
1091                 lpfc_printf_log(phba,
1092                                 KERN_ERR,
1093                                 LOG_SLI,
1094                                 "%d:0312 Ring %d handler: portRspPut %d "
1095                                 "is bigger then rsp ring %d\n",
1096                                 phba->brd_no,
1097                                 pring->ringno, portRspPut, portRspMax);
1098
1099                 phba->hba_state = LPFC_HBA_ERROR;
1100                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1101
1102                 phba->work_hs = HS_FFER3;
1103                 lpfc_handle_eratt(phba);
1104
1105                 return 1;
1106         }
1107
1108         rmb();
1109         while (pring->rspidx != portRspPut) {
1110                 /*
1111                  * Build a completion list and call the appropriate handler.
1112                  * The process is to get the next available response iocb, get
1113                  * a free iocb from the list, copy the response data into the
1114                  * free iocb, insert to the continuation list, and update the
1115                  * next response index to slim.  This process makes response
1116                  * iocb's in the ring available to DMA as fast as possible but
1117                  * pays a penalty for a copy operation.  Since the iocb is
1118                  * only 32 bytes, this penalty is considered small relative to
1119                  * the PCI reads for register values and a slim write.  When
1120                  * the ulpLe field is set, the entire Command has been
1121                  * received.
1122                  */
1123                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1124                 rspiocbp = lpfc_sli_get_iocbq(phba);
1125                 if (rspiocbp == NULL) {
1126                         printk(KERN_ERR "%s: out of buffers! Failing "
1127                                "completion.\n", __FUNCTION__);
1128                         break;
1129                 }
1130
1131                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
1132                 irsp = &rspiocbp->iocb;
1133
1134                 if (++pring->rspidx >= portRspMax)
1135                         pring->rspidx = 0;
1136
1137                 to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
1138                                               + 1) * 4;
1139                 writel(pring->rspidx, to_slim);
1140
1141                 if (list_empty(&(pring->iocb_continueq))) {
1142                         list_add(&rspiocbp->list, &(pring->iocb_continueq));
1143                 } else {
1144                         list_add_tail(&rspiocbp->list,
1145                                       &(pring->iocb_continueq));
1146                 }
1147
1148                 pring->iocb_continueq_cnt++;
1149                 if (irsp->ulpLe) {
1150                         /*
1151                          * By default, the driver expects to free all resources
1152                          * associated with this iocb completion.
1153                          */
1154                         free_saveq = 1;
1155                         saveq = list_get_first(&pring->iocb_continueq,
1156                                                struct lpfc_iocbq, list);
1157                         irsp = &(saveq->iocb);
1158                         list_del_init(&pring->iocb_continueq);
1159                         pring->iocb_continueq_cnt = 0;
1160
1161                         pring->stats.iocb_rsp++;
1162
1163                         if (irsp->ulpStatus) {
1164                                 /* Rsp ring <ringno> error: IOCB */
1165                                 lpfc_printf_log(phba,
1166                                         KERN_WARNING,
1167                                         LOG_SLI,
1168                                         "%d:0328 Rsp Ring %d error: IOCB Data: "
1169                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1170                                         phba->brd_no,
1171                                         pring->ringno,
1172                                         irsp->un.ulpWord[0],
1173                                         irsp->un.ulpWord[1],
1174                                         irsp->un.ulpWord[2],
1175                                         irsp->un.ulpWord[3],
1176                                         irsp->un.ulpWord[4],
1177                                         irsp->un.ulpWord[5],
1178                                         *(((uint32_t *) irsp) + 6),
1179                                         *(((uint32_t *) irsp) + 7));
1180                         }
1181
1182                         /*
1183                          * Fetch the IOCB command type and call the correct
1184                          * completion routine.  Solicited and Unsolicited
1185                          * IOCBs on the ELS ring get freed back to the
1186                          * lpfc_iocb_list by the discovery kernel thread.
1187                          */
1188                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1189                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1190                         if (type == LPFC_SOL_IOCB) {
1191                                 spin_unlock_irqrestore(phba->host->host_lock,
1192                                                        iflag);
1193                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1194                                         saveq);
1195                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1196                         } else if (type == LPFC_UNSOL_IOCB) {
1197                                 spin_unlock_irqrestore(phba->host->host_lock,
1198                                                        iflag);
1199                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1200                                         saveq);
1201                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1202                         } else if (type == LPFC_ABORT_IOCB) {
1203                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1204                                     ((cmdiocbp =
1205                                       lpfc_sli_iocbq_lookup(phba, pring,
1206                                                             saveq)))) {
1207                                         /* Call the specified completion
1208                                            routine */
1209                                         if (cmdiocbp->iocb_cmpl) {
1210                                                 spin_unlock_irqrestore(
1211                                                        phba->host->host_lock,
1212                                                        iflag);
1213                                                 (cmdiocbp->iocb_cmpl) (phba,
1214                                                              cmdiocbp, saveq);
1215                                                 spin_lock_irqsave(
1216                                                           phba->host->host_lock,
1217                                                           iflag);
1218                                         } else
1219                                                 lpfc_sli_release_iocbq(phba,
1220                                                                       cmdiocbp);
1221                                 }
1222                         } else if (type == LPFC_UNKNOWN_IOCB) {
1223                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1224
1225                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1226
1227                                         memset(adaptermsg, 0,
1228                                                LPFC_MAX_ADPTMSG);
1229                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1230                                                MAX_MSG_DATA);
1231                                         dev_warn(&((phba->pcidev)->dev),
1232                                                  "lpfc%d: %s",
1233                                                  phba->brd_no, adaptermsg);
1234                                 } else {
1235                                         /* Unknown IOCB command */
1236                                         lpfc_printf_log(phba,
1237                                                 KERN_ERR,
1238                                                 LOG_SLI,
1239                                                 "%d:0321 Unknown IOCB command "
1240                                                 "Data: x%x x%x x%x x%x\n",
1241                                                 phba->brd_no,
1242                                                 irsp->ulpCommand,
1243                                                 irsp->ulpStatus,
1244                                                 irsp->ulpIoTag,
1245                                                 irsp->ulpContext);
1246                                 }
1247                         }
1248
1249                         if (free_saveq) {
1250                                 if (!list_empty(&saveq->list)) {
1251                                         list_for_each_entry_safe(rspiocbp,
1252                                                                  next_iocb,
1253                                                                  &saveq->list,
1254                                                                  list) {
1255                                                 lpfc_sli_release_iocbq(phba,
1256                                                                      rspiocbp);
1257                                         }
1258                                 }
1259
1260                                 lpfc_sli_release_iocbq(phba, saveq);
1261                         }
1262                 }
1263
1264                 /*
1265                  * If the port response put pointer has not been updated, sync
1266                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1267                  * response put pointer.
1268                  */
1269                 if (pring->rspidx == portRspPut) {
1270                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1271                 }
1272         } /* while (pring->rspidx != portRspPut) */
1273
1274         if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
1275                 /* At least one response entry has been freed */
1276                 pring->stats.iocb_rsp_full++;
1277                 /* SET RxRE_RSP in Chip Att register */
1278                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1279                 writel(status, phba->CAregaddr);
1280                 readl(phba->CAregaddr); /* flush */
1281         }
1282         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1283                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1284                 pring->stats.iocb_cmd_empty++;
1285
1286                 /* Force update of the local copy of cmdGetInx */
1287                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1288                 lpfc_sli_resume_iocb(phba, pring);
1289
1290                 if ((pring->lpfc_sli_cmd_available))
1291                         (pring->lpfc_sli_cmd_available) (phba, pring);
1292
1293         }
1294
1295         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1296         return rc;
1297 }
1298
1299 int
1300 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1301 {
1302         struct lpfc_iocbq *iocb, *next_iocb;
1303         IOCB_t *icmd = NULL, *cmd = NULL;
1304         int errcnt;
1305
1306         errcnt = 0;
1307
1308         /* Error everything on txq and txcmplq
1309          * First do the txq.
1310          */
1311         spin_lock_irq(phba->host->host_lock);
1312         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
1313                 list_del_init(&iocb->list);
1314                 if (iocb->iocb_cmpl) {
1315                         icmd = &iocb->iocb;
1316                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1317                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1318                         spin_unlock_irq(phba->host->host_lock);
1319                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1320                         spin_lock_irq(phba->host->host_lock);
1321                 } else
1322                         lpfc_sli_release_iocbq(phba, iocb);
1323         }
1324         pring->txq_cnt = 0;
1325         INIT_LIST_HEAD(&(pring->txq));
1326
1327         /* Next issue ABTS for everything on the txcmplq */
1328         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1329                 cmd = &iocb->iocb;
1330
1331                 /*
1332                  * Imediate abort of IOCB, deque and call compl
1333                  */
1334
1335                 list_del_init(&iocb->list);
1336                 pring->txcmplq_cnt--;
1337
1338                 if (iocb->iocb_cmpl) {
1339                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1340                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1341                         spin_unlock_irq(phba->host->host_lock);
1342                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1343                         spin_lock_irq(phba->host->host_lock);
1344                 } else
1345                         lpfc_sli_release_iocbq(phba, iocb);
1346         }
1347
1348         INIT_LIST_HEAD(&pring->txcmplq);
1349         pring->txcmplq_cnt = 0;
1350         spin_unlock_irq(phba->host->host_lock);
1351
1352         return errcnt;
1353 }
1354
1355 /******************************************************************************
1356 * lpfc_sli_send_reset
1357 *
1358 * Note: After returning from this function, the HBA cannot be accessed for
1359 * 1 ms. Since we do not wish to delay in interrupt context, it is the
1360 * responsibility of the caller to perform the mdelay(1) and flush via readl().
1361 ******************************************************************************/
1362 static int
1363 lpfc_sli_send_reset(struct lpfc_hba * phba, uint16_t skip_post)
1364 {
1365         MAILBOX_t *swpmb;
1366         volatile uint32_t word0;
1367         void __iomem *to_slim;
1368         unsigned long flags = 0;
1369
1370         spin_lock_irqsave(phba->host->host_lock, flags);
1371
1372         /* A board reset must use REAL SLIM. */
1373         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1374
1375         word0 = 0;
1376         swpmb = (MAILBOX_t *) & word0;
1377         swpmb->mbxCommand = MBX_RESTART;
1378         swpmb->mbxHc = 1;
1379
1380         to_slim = phba->MBslimaddr;
1381         writel(*(uint32_t *) swpmb, to_slim);
1382         readl(to_slim); /* flush */
1383
1384         /* Only skip post after fc_ffinit is completed */
1385         if (skip_post) {
1386                 word0 = 1;      /* This is really setting up word1 */
1387         } else {
1388                 word0 = 0;      /* This is really setting up word1 */
1389         }
1390         to_slim = phba->MBslimaddr + sizeof (uint32_t);
1391         writel(*(uint32_t *) swpmb, to_slim);
1392         readl(to_slim); /* flush */
1393
1394         /* Turn off parity checking and serr during the physical reset */
1395         pci_read_config_word(phba->pcidev, PCI_COMMAND, &phba->pci_cfg_value);
1396         pci_write_config_word(phba->pcidev, PCI_COMMAND,
1397                               (phba->pci_cfg_value &
1398                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
1399
1400         writel(HC_INITFF, phba->HCregaddr);
1401
1402         phba->hba_state = LPFC_INIT_START;
1403         spin_unlock_irqrestore(phba->host->host_lock, flags);
1404
1405         return 0;
1406 }
1407
1408 static int
1409 lpfc_sli_brdreset(struct lpfc_hba * phba, uint16_t skip_post)
1410 {
1411         struct lpfc_sli_ring *pring;
1412         int i;
1413         struct lpfc_dmabuf *mp, *next_mp;
1414         unsigned long flags = 0;
1415
1416         lpfc_sli_send_reset(phba, skip_post);
1417         mdelay(1);
1418
1419         spin_lock_irqsave(phba->host->host_lock, flags);
1420         /* Risk the write on flush case ie no delay after the readl */
1421         readl(phba->HCregaddr); /* flush */
1422         /* Now toggle INITFF bit set by lpfc_sli_send_reset */
1423         writel(0, phba->HCregaddr);
1424         readl(phba->HCregaddr); /* flush */
1425
1426         /* Restore PCI cmd register */
1427         pci_write_config_word(phba->pcidev, PCI_COMMAND, phba->pci_cfg_value);
1428
1429         /* perform board reset */
1430         phba->fc_eventTag = 0;
1431         phba->fc_myDID = 0;
1432         phba->fc_prevDID = Mask_DID;
1433
1434         /* Reset HBA */
1435         lpfc_printf_log(phba,
1436                 KERN_INFO,
1437                 LOG_SLI,
1438                 "%d:0325 Reset HBA Data: x%x x%x x%x\n",
1439                 phba->brd_no,
1440                 phba->hba_state,
1441                 phba->sli.sli_flag,
1442                 skip_post);
1443
1444         /* Initialize relevant SLI info */
1445         for (i = 0; i < phba->sli.num_rings; i++) {
1446                 pring = &phba->sli.ring[i];
1447                 pring->flag = 0;
1448                 pring->rspidx = 0;
1449                 pring->next_cmdidx  = 0;
1450                 pring->local_getidx = 0;
1451                 pring->cmdidx = 0;
1452                 pring->missbufcnt = 0;
1453         }
1454         spin_unlock_irqrestore(phba->host->host_lock, flags);
1455
1456         if (skip_post) {
1457                 mdelay(100);
1458         } else {
1459                 mdelay(2000);
1460         }
1461
1462         spin_lock_irqsave(phba->host->host_lock, flags);
1463         /* Cleanup preposted buffers on the ELS ring */
1464         pring = &phba->sli.ring[LPFC_ELS_RING];
1465         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
1466                 list_del(&mp->list);
1467                 pring->postbufq_cnt--;
1468                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1469                 kfree(mp);
1470         }
1471         spin_unlock_irqrestore(phba->host->host_lock, flags);
1472
1473         for (i = 0; i < phba->sli.num_rings; i++)
1474                 lpfc_sli_abort_iocb_ring(phba, &phba->sli.ring[i]);
1475
1476         return 0;
1477 }
1478
1479 static int
1480 lpfc_sli_chipset_init(struct lpfc_hba *phba)
1481 {
1482         uint32_t status, i = 0;
1483
1484         /* Read the HBA Host Status Register */
1485         status = readl(phba->HSregaddr);
1486
1487         /* Check status register to see what current state is */
1488         i = 0;
1489         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
1490
1491                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
1492                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
1493                  * 4.
1494                  */
1495                 if (i++ >= 20) {
1496                         /* Adapter failed to init, timeout, status reg
1497                            <status> */
1498                         lpfc_printf_log(phba,
1499                                         KERN_ERR,
1500                                         LOG_INIT,
1501                                         "%d:0436 Adapter failed to init, "
1502                                         "timeout, status reg x%x\n",
1503                                         phba->brd_no,
1504                                         status);
1505                         phba->hba_state = LPFC_HBA_ERROR;
1506                         return -ETIMEDOUT;
1507                 }
1508
1509                 /* Check to see if any errors occurred during init */
1510                 if (status & HS_FFERM) {
1511                         /* ERROR: During chipset initialization */
1512                         /* Adapter failed to init, chipset, status reg
1513                            <status> */
1514                         lpfc_printf_log(phba,
1515                                         KERN_ERR,
1516                                         LOG_INIT,
1517                                         "%d:0437 Adapter failed to init, "
1518                                         "chipset, status reg x%x\n",
1519                                         phba->brd_no,
1520                                         status);
1521                         phba->hba_state = LPFC_HBA_ERROR;
1522                         return -EIO;
1523                 }
1524
1525                 if (i <= 5) {
1526                         msleep(10);
1527                 } else if (i <= 10) {
1528                         msleep(500);
1529                 } else {
1530                         msleep(2500);
1531                 }
1532
1533                 if (i == 15) {
1534                         lpfc_sli_brdreset(phba, 0);
1535                 }
1536                 /* Read the HBA Host Status Register */
1537                 status = readl(phba->HSregaddr);
1538         }
1539
1540         /* Check to see if any errors occurred during init */
1541         if (status & HS_FFERM) {
1542                 /* ERROR: During chipset initialization */
1543                 /* Adapter failed to init, chipset, status reg <status> */
1544                 lpfc_printf_log(phba,
1545                                 KERN_ERR,
1546                                 LOG_INIT,
1547                                 "%d:0438 Adapter failed to init, chipset, "
1548                                 "status reg x%x\n",
1549                                 phba->brd_no,
1550                                 status);
1551                 phba->hba_state = LPFC_HBA_ERROR;
1552                 return -EIO;
1553         }
1554
1555         /* Clear all interrupt enable conditions */
1556         writel(0, phba->HCregaddr);
1557         readl(phba->HCregaddr); /* flush */
1558
1559         /* setup host attn register */
1560         writel(0xffffffff, phba->HAregaddr);
1561         readl(phba->HAregaddr); /* flush */
1562         return 0;
1563 }
1564
1565 int
1566 lpfc_sli_hba_setup(struct lpfc_hba * phba)
1567 {
1568         LPFC_MBOXQ_t *pmb;
1569         uint32_t resetcount = 0, rc = 0, done = 0;
1570
1571         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1572         if (!pmb) {
1573                 phba->hba_state = LPFC_HBA_ERROR;
1574                 return -ENOMEM;
1575         }
1576
1577         while (resetcount < 2 && !done) {
1578                 phba->hba_state = 0;
1579                 lpfc_sli_brdreset(phba, 0);
1580                 msleep(2500);
1581                 rc = lpfc_sli_chipset_init(phba);
1582                 if (rc)
1583                         break;
1584
1585                 resetcount++;
1586
1587         /* Call pre CONFIG_PORT mailbox command initialization.  A value of 0
1588          * means the call was successful.  Any other nonzero value is a failure,
1589          * but if ERESTART is returned, the driver may reset the HBA and try
1590          * again.
1591          */
1592                 rc = lpfc_config_port_prep(phba);
1593                 if (rc == -ERESTART) {
1594                         phba->hba_state = 0;
1595                         continue;
1596                 } else if (rc) {
1597                         break;
1598                 }
1599
1600                 phba->hba_state = LPFC_INIT_MBX_CMDS;
1601                 lpfc_config_port(phba, pmb);
1602                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
1603                 if (rc == MBX_SUCCESS)
1604                         done = 1;
1605                 else {
1606                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1607                                 "%d:0442 Adapter failed to init, mbxCmd x%x "
1608                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
1609                                 phba->brd_no, pmb->mb.mbxCommand,
1610                                 pmb->mb.mbxStatus, 0);
1611                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1612                 }
1613         }
1614         if (!done)
1615                 goto lpfc_sli_hba_setup_error;
1616
1617         rc = lpfc_sli_ring_map(phba, pmb);
1618
1619         if (rc)
1620                 goto lpfc_sli_hba_setup_error;
1621
1622         phba->sli.sli_flag |= LPFC_PROCESS_LA;
1623
1624         rc = lpfc_config_port_post(phba);
1625         if (rc)
1626                 goto lpfc_sli_hba_setup_error;
1627
1628         goto lpfc_sli_hba_setup_exit;
1629 lpfc_sli_hba_setup_error:
1630         phba->hba_state = LPFC_HBA_ERROR;
1631 lpfc_sli_hba_setup_exit:
1632         mempool_free(pmb, phba->mbox_mem_pool);
1633         return rc;
1634 }
1635
1636 static void
1637 lpfc_mbox_abort(struct lpfc_hba * phba)
1638 {
1639         LPFC_MBOXQ_t *pmbox;
1640         MAILBOX_t *mb;
1641
1642         if (phba->sli.mbox_active) {
1643                 del_timer_sync(&phba->sli.mbox_tmo);
1644                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1645                 pmbox = phba->sli.mbox_active;
1646                 mb = &pmbox->mb;
1647                 phba->sli.mbox_active = NULL;
1648                 if (pmbox->mbox_cmpl) {
1649                         mb->mbxStatus = MBX_NOT_FINISHED;
1650                         (pmbox->mbox_cmpl) (phba, pmbox);
1651                 }
1652                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1653         }
1654
1655         /* Abort all the non active mailbox commands. */
1656         spin_lock_irq(phba->host->host_lock);
1657         pmbox = lpfc_mbox_get(phba);
1658         while (pmbox) {
1659                 mb = &pmbox->mb;
1660                 if (pmbox->mbox_cmpl) {
1661                         mb->mbxStatus = MBX_NOT_FINISHED;
1662                         spin_unlock_irq(phba->host->host_lock);
1663                         (pmbox->mbox_cmpl) (phba, pmbox);
1664                         spin_lock_irq(phba->host->host_lock);
1665                 }
1666                 pmbox = lpfc_mbox_get(phba);
1667         }
1668         spin_unlock_irq(phba->host->host_lock);
1669         return;
1670 }
1671
1672 /*! lpfc_mbox_timeout
1673  *
1674  * \pre
1675  * \post
1676  * \param hba Pointer to per struct lpfc_hba structure
1677  * \param l1  Pointer to the driver's mailbox queue.
1678  * \return
1679  *   void
1680  *
1681  * \b Description:
1682  *
1683  * This routine handles mailbox timeout events at timer interrupt context.
1684  */
1685 void
1686 lpfc_mbox_timeout(unsigned long ptr)
1687 {
1688         struct lpfc_hba *phba;
1689         unsigned long iflag;
1690
1691         phba = (struct lpfc_hba *)ptr;
1692         spin_lock_irqsave(phba->host->host_lock, iflag);
1693         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1694                 phba->work_hba_events |= WORKER_MBOX_TMO;
1695                 if (phba->work_wait)
1696                         wake_up(phba->work_wait);
1697         }
1698         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1699 }
1700
1701 void
1702 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
1703 {
1704         LPFC_MBOXQ_t *pmbox;
1705         MAILBOX_t *mb;
1706
1707         spin_lock_irq(phba->host->host_lock);
1708         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1709                 spin_unlock_irq(phba->host->host_lock);
1710                 return;
1711         }
1712
1713         phba->work_hba_events &= ~WORKER_MBOX_TMO;
1714
1715         pmbox = phba->sli.mbox_active;
1716         mb = &pmbox->mb;
1717
1718         /* Mbox cmd <mbxCommand> timeout */
1719         lpfc_printf_log(phba,
1720                 KERN_ERR,
1721                 LOG_MBOX | LOG_SLI,
1722                 "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
1723                 phba->brd_no,
1724                 mb->mbxCommand,
1725                 phba->hba_state,
1726                 phba->sli.sli_flag,
1727                 phba->sli.mbox_active);
1728
1729         phba->sli.mbox_active = NULL;
1730         if (pmbox->mbox_cmpl) {
1731                 mb->mbxStatus = MBX_NOT_FINISHED;
1732                 spin_unlock_irq(phba->host->host_lock);
1733                 (pmbox->mbox_cmpl) (phba, pmbox);
1734                 spin_lock_irq(phba->host->host_lock);
1735         }
1736         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1737
1738         spin_unlock_irq(phba->host->host_lock);
1739         lpfc_mbox_abort(phba);
1740         return;
1741 }
1742
1743 int
1744 lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
1745 {
1746         MAILBOX_t *mb;
1747         struct lpfc_sli *psli;
1748         uint32_t status, evtctr;
1749         uint32_t ha_copy;
1750         int i;
1751         unsigned long drvr_flag = 0;
1752         volatile uint32_t word0, ldata;
1753         void __iomem *to_slim;
1754
1755         psli = &phba->sli;
1756
1757         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
1758
1759
1760         mb = &pmbox->mb;
1761         status = MBX_SUCCESS;
1762
1763         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
1764                 /* Polling for a mbox command when another one is already active
1765                  * is not allowed in SLI. Also, the driver must have established
1766                  * SLI2 mode to queue and process multiple mbox commands.
1767                  */
1768
1769                 if (flag & MBX_POLL) {
1770                         spin_unlock_irqrestore(phba->host->host_lock,
1771                                                drvr_flag);
1772
1773                         /* Mbox command <mbxCommand> cannot issue */
1774                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1775                         return (MBX_NOT_FINISHED);
1776                 }
1777
1778                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
1779                         spin_unlock_irqrestore(phba->host->host_lock,
1780                                                drvr_flag);
1781                         /* Mbox command <mbxCommand> cannot issue */
1782                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1783                         return (MBX_NOT_FINISHED);
1784                 }
1785
1786                 /* Handle STOP IOCB processing flag. This is only meaningful
1787                  * if we are not polling for mbox completion.
1788                  */
1789                 if (flag & MBX_STOP_IOCB) {
1790                         flag &= ~MBX_STOP_IOCB;
1791                         /* Now flag each ring */
1792                         for (i = 0; i < psli->num_rings; i++) {
1793                                 /* If the ring is active, flag it */
1794                                 if (psli->ring[i].cmdringaddr) {
1795                                         psli->ring[i].flag |=
1796                                             LPFC_STOP_IOCB_MBX;
1797                                 }
1798                         }
1799                 }
1800
1801                 /* Another mailbox command is still being processed, queue this
1802                  * command to be processed later.
1803                  */
1804                 lpfc_mbox_put(phba, pmbox);
1805
1806                 /* Mbox cmd issue - BUSY */
1807                 lpfc_printf_log(phba,
1808                         KERN_INFO,
1809                         LOG_MBOX | LOG_SLI,
1810                         "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
1811                         phba->brd_no,
1812                         mb->mbxCommand,
1813                         phba->hba_state,
1814                         psli->sli_flag,
1815                         flag);
1816
1817                 psli->slistat.mbox_busy++;
1818                 spin_unlock_irqrestore(phba->host->host_lock,
1819                                        drvr_flag);
1820
1821                 return (MBX_BUSY);
1822         }
1823
1824         /* Handle STOP IOCB processing flag. This is only meaningful
1825          * if we are not polling for mbox completion.
1826          */
1827         if (flag & MBX_STOP_IOCB) {
1828                 flag &= ~MBX_STOP_IOCB;
1829                 if (flag == MBX_NOWAIT) {
1830                         /* Now flag each ring */
1831                         for (i = 0; i < psli->num_rings; i++) {
1832                                 /* If the ring is active, flag it */
1833                                 if (psli->ring[i].cmdringaddr) {
1834                                         psli->ring[i].flag |=
1835                                             LPFC_STOP_IOCB_MBX;
1836                                 }
1837                         }
1838                 }
1839         }
1840
1841         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
1842
1843         /* If we are not polling, we MUST be in SLI2 mode */
1844         if (flag != MBX_POLL) {
1845                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
1846                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1847                         spin_unlock_irqrestore(phba->host->host_lock,
1848                                                drvr_flag);
1849                         /* Mbox command <mbxCommand> cannot issue */
1850                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
1851                         return (MBX_NOT_FINISHED);
1852                 }
1853                 /* timeout active mbox command */
1854                 mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO);
1855         }
1856
1857         /* Mailbox cmd <cmd> issue */
1858         lpfc_printf_log(phba,
1859                 KERN_INFO,
1860                 LOG_MBOX | LOG_SLI,
1861                 "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
1862                 phba->brd_no,
1863                 mb->mbxCommand,
1864                 phba->hba_state,
1865                 psli->sli_flag,
1866                 flag);
1867
1868         psli->slistat.mbox_cmd++;
1869         evtctr = psli->slistat.mbox_event;
1870
1871         /* next set own bit for the adapter and copy over command word */
1872         mb->mbxOwner = OWN_CHIP;
1873
1874         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1875                 /* First copy command data to host SLIM area */
1876                 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
1877         } else {
1878                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1879                         /* copy command data into host mbox for cmpl */
1880                         lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
1881                                         MAILBOX_CMD_SIZE);
1882                 }
1883
1884                 /* First copy mbox command data to HBA SLIM, skip past first
1885                    word */
1886                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
1887                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
1888                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
1889
1890                 /* Next copy over first word, with mbxOwner set */
1891                 ldata = *((volatile uint32_t *)mb);
1892                 to_slim = phba->MBslimaddr;
1893                 writel(ldata, to_slim);
1894                 readl(to_slim); /* flush */
1895
1896                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1897                         /* switch over to host mailbox */
1898                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
1899                 }
1900         }
1901
1902         wmb();
1903         /* interrupt board to doit right away */
1904         writel(CA_MBATT, phba->CAregaddr);
1905         readl(phba->CAregaddr); /* flush */
1906
1907         switch (flag) {
1908         case MBX_NOWAIT:
1909                 /* Don't wait for it to finish, just return */
1910                 psli->mbox_active = pmbox;
1911                 break;
1912
1913         case MBX_POLL:
1914                 i = 0;
1915                 psli->mbox_active = NULL;
1916                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1917                         /* First read mbox status word */
1918                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
1919                         word0 = le32_to_cpu(word0);
1920                 } else {
1921                         /* First read mbox status word */
1922                         word0 = readl(phba->MBslimaddr);
1923                 }
1924
1925                 /* Read the HBA Host Attention Register */
1926                 ha_copy = readl(phba->HAregaddr);
1927
1928                 /* Wait for command to complete */
1929                 while (((word0 & OWN_CHIP) == OWN_CHIP)
1930                        || !(ha_copy & HA_MBATT)) {
1931                         if (i++ >= 100) {
1932                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1933                                 spin_unlock_irqrestore(phba->host->host_lock,
1934                                                        drvr_flag);
1935                                 return (MBX_NOT_FINISHED);
1936                         }
1937
1938                         /* Check if we took a mbox interrupt while we were
1939                            polling */
1940                         if (((word0 & OWN_CHIP) != OWN_CHIP)
1941                             && (evtctr != psli->slistat.mbox_event))
1942                                 break;
1943
1944                         spin_unlock_irqrestore(phba->host->host_lock,
1945                                                drvr_flag);
1946
1947                         /* Can be in interrupt context, do not sleep */
1948                         /* (or might be called with interrupts disabled) */
1949                         mdelay(i);
1950
1951                         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
1952
1953                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1954                                 /* First copy command data */
1955                                 word0 = *((volatile uint32_t *)
1956                                                 &phba->slim2p->mbx);
1957                                 word0 = le32_to_cpu(word0);
1958                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1959                                         MAILBOX_t *slimmb;
1960                                         volatile uint32_t slimword0;
1961                                         /* Check real SLIM for any errors */
1962                                         slimword0 = readl(phba->MBslimaddr);
1963                                         slimmb = (MAILBOX_t *) & slimword0;
1964                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
1965                                             && slimmb->mbxStatus) {
1966                                                 psli->sli_flag &=
1967                                                     ~LPFC_SLI2_ACTIVE;
1968                                                 word0 = slimword0;
1969                                         }
1970                                 }
1971                         } else {
1972                                 /* First copy command data */
1973                                 word0 = readl(phba->MBslimaddr);
1974                         }
1975                         /* Read the HBA Host Attention Register */
1976                         ha_copy = readl(phba->HAregaddr);
1977                 }
1978
1979                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1980                         /* copy results back to user */
1981                         lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
1982                                         MAILBOX_CMD_SIZE);
1983                 } else {
1984                         /* First copy command data */
1985                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
1986                                                         MAILBOX_CMD_SIZE);
1987                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
1988                                 pmbox->context2) {
1989                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
1990                                       phba->MBslimaddr + DMP_RSP_OFFSET,
1991                                                       mb->un.varDmp.word_cnt);
1992                         }
1993                 }
1994
1995                 writel(HA_MBATT, phba->HAregaddr);
1996                 readl(phba->HAregaddr); /* flush */
1997
1998                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1999                 status = mb->mbxStatus;
2000         }
2001
2002         spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2003         return (status);
2004 }
2005
2006 static int
2007 lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2008                     struct lpfc_iocbq * piocb)
2009 {
2010         /* Insert the caller's iocb in the txq tail for later processing. */
2011         list_add_tail(&piocb->list, &pring->txq);
2012         pring->txq_cnt++;
2013         return (0);
2014 }
2015
2016 static struct lpfc_iocbq *
2017 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2018                    struct lpfc_iocbq ** piocb)
2019 {
2020         struct lpfc_iocbq * nextiocb;
2021
2022         nextiocb = lpfc_sli_ringtx_get(phba, pring);
2023         if (!nextiocb) {
2024                 nextiocb = *piocb;
2025                 *piocb = NULL;
2026         }
2027
2028         return nextiocb;
2029 }
2030
2031 int
2032 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2033                     struct lpfc_iocbq *piocb, uint32_t flag)
2034 {
2035         struct lpfc_iocbq *nextiocb;
2036         IOCB_t *iocb;
2037
2038         /*
2039          * We should never get an IOCB if we are in a < LINK_DOWN state
2040          */
2041         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2042                 return IOCB_ERROR;
2043
2044         /*
2045          * Check to see if we are blocking IOCB processing because of a
2046          * outstanding mbox command.
2047          */
2048         if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
2049                 goto iocb_busy;
2050
2051         if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
2052                 /*
2053                  * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
2054                  * can be issued if the link is not up.
2055                  */
2056                 switch (piocb->iocb.ulpCommand) {
2057                 case CMD_QUE_RING_BUF_CN:
2058                 case CMD_QUE_RING_BUF64_CN:
2059                         /*
2060                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2061                          * completion, iocb_cmpl MUST be 0.
2062                          */
2063                         if (piocb->iocb_cmpl)
2064                                 piocb->iocb_cmpl = NULL;
2065                         /*FALLTHROUGH*/
2066                 case CMD_CREATE_XRI_CR:
2067                         break;
2068                 default:
2069                         goto iocb_busy;
2070                 }
2071
2072         /*
2073          * For FCP commands, we must be in a state where we can process link
2074          * attention events.
2075          */
2076         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2077                    !(phba->sli.sli_flag & LPFC_PROCESS_LA)))
2078                 goto iocb_busy;
2079
2080         /*
2081          * Check to see if this is a high priority command.
2082          * If so bypass tx queue processing.
2083          */
2084         if (unlikely((flag & SLI_IOCB_HIGH_PRIORITY) &&
2085                      (iocb = lpfc_sli_next_iocb_slot(phba, pring)))) {
2086                 lpfc_sli_submit_iocb(phba, pring, iocb, piocb);
2087                 piocb = NULL;
2088         }
2089
2090         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2091                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2092                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2093
2094         if (iocb)
2095                 lpfc_sli_update_ring(phba, pring);
2096         else
2097                 lpfc_sli_update_full_ring(phba, pring);
2098
2099         if (!piocb)
2100                 return IOCB_SUCCESS;
2101
2102         goto out_busy;
2103
2104  iocb_busy:
2105         pring->stats.iocb_cmd_delay++;
2106
2107  out_busy:
2108
2109         if (!(flag & SLI_IOCB_RET_IOCB)) {
2110                 lpfc_sli_ringtx_put(phba, pring, piocb);
2111                 return IOCB_SUCCESS;
2112         }
2113
2114         return IOCB_BUSY;
2115 }
2116
2117 int
2118 lpfc_sli_setup(struct lpfc_hba *phba)
2119 {
2120         int i, totiocb = 0;
2121         struct lpfc_sli *psli = &phba->sli;
2122         struct lpfc_sli_ring *pring;
2123
2124         psli->num_rings = MAX_CONFIGURED_RINGS;
2125         psli->sli_flag = 0;
2126         psli->fcp_ring = LPFC_FCP_RING;
2127         psli->next_ring = LPFC_FCP_NEXT_RING;
2128         psli->ip_ring = LPFC_IP_RING;
2129
2130         psli->iocbq_lookup = NULL;
2131         psli->iocbq_lookup_len = 0;
2132         psli->last_iotag = 0;
2133
2134         for (i = 0; i < psli->num_rings; i++) {
2135                 pring = &psli->ring[i];
2136                 switch (i) {
2137                 case LPFC_FCP_RING:     /* ring 0 - FCP */
2138                         /* numCiocb and numRiocb are used in config_port */
2139                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
2140                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
2141                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2142                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2143                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2144                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2145                         pring->iotag_ctr = 0;
2146                         pring->iotag_max =
2147                             (phba->cfg_hba_queue_depth * 2);
2148                         pring->fast_iotag = pring->iotag_max;
2149                         pring->num_mask = 0;
2150                         break;
2151                 case LPFC_IP_RING:      /* ring 1 - IP */
2152                         /* numCiocb and numRiocb are used in config_port */
2153                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
2154                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
2155                         pring->num_mask = 0;
2156                         break;
2157                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
2158                         /* numCiocb and numRiocb are used in config_port */
2159                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
2160                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
2161                         pring->fast_iotag = 0;
2162                         pring->iotag_ctr = 0;
2163                         pring->iotag_max = 4096;
2164                         pring->num_mask = 4;
2165                         pring->prt[0].profile = 0;      /* Mask 0 */
2166                         pring->prt[0].rctl = FC_ELS_REQ;
2167                         pring->prt[0].type = FC_ELS_DATA;
2168                         pring->prt[0].lpfc_sli_rcv_unsol_event =
2169                             lpfc_els_unsol_event;
2170                         pring->prt[1].profile = 0;      /* Mask 1 */
2171                         pring->prt[1].rctl = FC_ELS_RSP;
2172                         pring->prt[1].type = FC_ELS_DATA;
2173                         pring->prt[1].lpfc_sli_rcv_unsol_event =
2174                             lpfc_els_unsol_event;
2175                         pring->prt[2].profile = 0;      /* Mask 2 */
2176                         /* NameServer Inquiry */
2177                         pring->prt[2].rctl = FC_UNSOL_CTL;
2178                         /* NameServer */
2179                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
2180                         pring->prt[2].lpfc_sli_rcv_unsol_event =
2181                             lpfc_ct_unsol_event;
2182                         pring->prt[3].profile = 0;      /* Mask 3 */
2183                         /* NameServer response */
2184                         pring->prt[3].rctl = FC_SOL_CTL;
2185                         /* NameServer */
2186                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
2187                         pring->prt[3].lpfc_sli_rcv_unsol_event =
2188                             lpfc_ct_unsol_event;
2189                         break;
2190                 }
2191                 totiocb += (pring->numCiocb + pring->numRiocb);
2192         }
2193         if (totiocb > MAX_SLI2_IOCB) {
2194                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
2195                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2196                                 "%d:0462 Too many cmd / rsp ring entries in "
2197                                 "SLI2 SLIM Data: x%x x%x\n",
2198                                 phba->brd_no, totiocb, MAX_SLI2_IOCB);
2199         }
2200
2201         return 0;
2202 }
2203
2204 int
2205 lpfc_sli_queue_setup(struct lpfc_hba * phba)
2206 {
2207         struct lpfc_sli *psli;
2208         struct lpfc_sli_ring *pring;
2209         int i;
2210
2211         psli = &phba->sli;
2212         spin_lock_irq(phba->host->host_lock);
2213         INIT_LIST_HEAD(&psli->mboxq);
2214         /* Initialize list headers for txq and txcmplq as double linked lists */
2215         for (i = 0; i < psli->num_rings; i++) {
2216                 pring = &psli->ring[i];
2217                 pring->ringno = i;
2218                 pring->next_cmdidx  = 0;
2219                 pring->local_getidx = 0;
2220                 pring->cmdidx = 0;
2221                 INIT_LIST_HEAD(&pring->txq);
2222                 INIT_LIST_HEAD(&pring->txcmplq);
2223                 INIT_LIST_HEAD(&pring->iocb_continueq);
2224                 INIT_LIST_HEAD(&pring->postbufq);
2225         }
2226         spin_unlock_irq(phba->host->host_lock);
2227         return (1);
2228 }
2229
2230 int
2231 lpfc_sli_hba_down(struct lpfc_hba * phba)
2232 {
2233         struct lpfc_sli *psli;
2234         struct lpfc_sli_ring *pring;
2235         LPFC_MBOXQ_t *pmb;
2236         struct lpfc_iocbq *iocb, *next_iocb;
2237         IOCB_t *icmd = NULL;
2238         int i;
2239         unsigned long flags = 0;
2240
2241         psli = &phba->sli;
2242         lpfc_hba_down_prep(phba);
2243
2244         spin_lock_irqsave(phba->host->host_lock, flags);
2245
2246         for (i = 0; i < psli->num_rings; i++) {
2247                 pring = &psli->ring[i];
2248                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
2249
2250                 /*
2251                  * Error everything on the txq since these iocbs have not been
2252                  * given to the FW yet.
2253                  */
2254                 pring->txq_cnt = 0;
2255
2256                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2257                         list_del_init(&iocb->list);
2258                         if (iocb->iocb_cmpl) {
2259                                 icmd = &iocb->iocb;
2260                                 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2261                                 icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
2262                                 spin_unlock_irqrestore(phba->host->host_lock,
2263                                                        flags);
2264                                 (iocb->iocb_cmpl) (phba, iocb, iocb);
2265                                 spin_lock_irqsave(phba->host->host_lock, flags);
2266                         } else
2267                                 lpfc_sli_release_iocbq(phba, iocb);
2268                 }
2269
2270                 INIT_LIST_HEAD(&(pring->txq));
2271
2272                 kfree(pring->fast_lookup);
2273                 pring->fast_lookup = NULL;
2274         }
2275
2276         spin_unlock_irqrestore(phba->host->host_lock, flags);
2277
2278         /* Return any active mbox cmds */
2279         del_timer_sync(&psli->mbox_tmo);
2280         spin_lock_irqsave(phba->host->host_lock, flags);
2281         phba->work_hba_events &= ~WORKER_MBOX_TMO;
2282         if (psli->mbox_active) {
2283                 pmb = psli->mbox_active;
2284                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2285                 if (pmb->mbox_cmpl) {
2286                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2287                         pmb->mbox_cmpl(phba,pmb);
2288                         spin_lock_irqsave(phba->host->host_lock, flags);
2289                 }
2290         }
2291         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2292         psli->mbox_active = NULL;
2293
2294         /* Return any pending mbox cmds */
2295         while ((pmb = lpfc_mbox_get(phba)) != NULL) {
2296                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2297                 if (pmb->mbox_cmpl) {
2298                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2299                         pmb->mbox_cmpl(phba,pmb);
2300                         spin_lock_irqsave(phba->host->host_lock, flags);
2301                 }
2302         }
2303
2304         INIT_LIST_HEAD(&psli->mboxq);
2305
2306         spin_unlock_irqrestore(phba->host->host_lock, flags);
2307
2308         /*
2309          * Provided the hba is not in an error state, reset it.  It is not
2310          * capable of IO anymore.
2311          */
2312         if (phba->hba_state != LPFC_HBA_ERROR) {
2313                 phba->hba_state = LPFC_INIT_START;
2314                 lpfc_sli_brdreset(phba, 1);
2315         }
2316
2317         return 1;
2318 }
2319
2320 void
2321 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
2322 {
2323         uint32_t *src = srcp;
2324         uint32_t *dest = destp;
2325         uint32_t ldata;
2326         int i;
2327
2328         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
2329                 ldata = *src;
2330                 ldata = le32_to_cpu(ldata);
2331                 *dest = ldata;
2332                 src++;
2333                 dest++;
2334         }
2335 }
2336
2337 int
2338 lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2339                          struct lpfc_dmabuf * mp)
2340 {
2341         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
2342            later */
2343         list_add_tail(&mp->list, &pring->postbufq);
2344
2345         pring->postbufq_cnt++;
2346         return 0;
2347 }
2348
2349
2350 struct lpfc_dmabuf *
2351 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2352                          dma_addr_t phys)
2353 {
2354         struct lpfc_dmabuf *mp, *next_mp;
2355         struct list_head *slp = &pring->postbufq;
2356
2357         /* Search postbufq, from the begining, looking for a match on phys */
2358         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
2359                 if (mp->phys == phys) {
2360                         list_del_init(&mp->list);
2361                         pring->postbufq_cnt--;
2362                         return mp;
2363                 }
2364         }
2365
2366         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2367                         "%d:0410 Cannot find virtual addr for mapped buf on "
2368                         "ring %d Data x%llx x%p x%p x%x\n",
2369                         phba->brd_no, pring->ringno, (unsigned long long)phys,
2370                         slp->next, slp->prev, pring->postbufq_cnt);
2371         return NULL;
2372 }
2373
2374 static void
2375 lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2376                            struct lpfc_iocbq * rspiocb)
2377 {
2378         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2379         /* Free the resources associated with the ELS_REQUEST64 IOCB the driver
2380          * just aborted.
2381          * In this case, context2  = cmd,  context2->next = rsp, context3 = bpl
2382          */
2383         if (cmdiocb->context2) {
2384                 buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;
2385
2386                 /* Free the response IOCB before completing the abort
2387                    command.  */
2388                 buf_ptr = NULL;
2389                 list_remove_head((&buf_ptr1->list), buf_ptr,
2390                                  struct lpfc_dmabuf, list);
2391                 if (buf_ptr) {
2392                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2393                         kfree(buf_ptr);
2394                 }
2395                 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2396                 kfree(buf_ptr1);
2397         }
2398
2399         if (cmdiocb->context3) {
2400                 buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
2401                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2402                 kfree(buf_ptr);
2403         }
2404
2405         lpfc_sli_release_iocbq(phba, cmdiocb);
2406         return;
2407 }
2408
2409 int
2410 lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
2411                              struct lpfc_sli_ring * pring,
2412                              struct lpfc_iocbq * cmdiocb)
2413 {
2414         struct lpfc_iocbq *abtsiocbp;
2415         IOCB_t *icmd = NULL;
2416         IOCB_t *iabt = NULL;
2417
2418         /* issue ABTS for this IOCB based on iotag */
2419         abtsiocbp = lpfc_sli_get_iocbq(phba);
2420         if (abtsiocbp == NULL)
2421                 return 0;
2422
2423         iabt = &abtsiocbp->iocb;
2424         icmd = &cmdiocb->iocb;
2425         switch (icmd->ulpCommand) {
2426         case CMD_ELS_REQUEST64_CR:
2427                 /* Even though we abort the ELS command, the firmware may access
2428                  * the BPL or other resources before it processes our
2429                  * ABORT_MXRI64. Thus we must delay reusing the cmdiocb
2430                  * resources till the actual abort request completes.
2431                  */
2432                 abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
2433                 abtsiocbp->context2 = cmdiocb->context2;
2434                 abtsiocbp->context3 = cmdiocb->context3;
2435                 cmdiocb->context2 = NULL;
2436                 cmdiocb->context3 = NULL;
2437                 abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
2438                 break;
2439         default:
2440                 lpfc_sli_release_iocbq(phba, abtsiocbp);
2441                 return 0;
2442         }
2443
2444         iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
2445         iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;
2446
2447         iabt->ulpLe = 1;
2448         iabt->ulpClass = CLASS3;
2449         iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
2450
2451         if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
2452                 lpfc_sli_release_iocbq(phba, abtsiocbp);
2453                 return 0;
2454         }
2455
2456         return 1;
2457 }
2458
2459 static int
2460 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, uint16_t tgt_id,
2461                            uint64_t lun_id, uint32_t ctx,
2462                            lpfc_ctx_cmd ctx_cmd)
2463 {
2464         struct lpfc_scsi_buf *lpfc_cmd;
2465         struct scsi_cmnd *cmnd;
2466         int rc = 1;
2467
2468         if (!(iocbq->iocb_flag &  LPFC_IO_FCP))
2469                 return rc;
2470
2471         lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
2472         cmnd = lpfc_cmd->pCmd;
2473
2474         if (cmnd == NULL)
2475                 return rc;
2476
2477         switch (ctx_cmd) {
2478         case LPFC_CTX_LUN:
2479                 if ((cmnd->device->id == tgt_id) &&
2480                     (cmnd->device->lun == lun_id))
2481                         rc = 0;
2482                 break;
2483         case LPFC_CTX_TGT:
2484                 if (cmnd->device->id == tgt_id)
2485                         rc = 0;
2486                 break;
2487         case LPFC_CTX_CTX:
2488                 if (iocbq->iocb.ulpContext == ctx)
2489                         rc = 0;
2490                 break;
2491         case LPFC_CTX_HOST:
2492                 rc = 0;
2493                 break;
2494         default:
2495                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
2496                         __FUNCTION__, ctx_cmd);
2497                 break;
2498         }
2499
2500         return rc;
2501 }
2502
2503 int
2504 lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2505                 uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
2506 {
2507         struct lpfc_iocbq *iocbq;
2508         int sum, i;
2509
2510         for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
2511                 iocbq = phba->sli.iocbq_lookup[i];
2512
2513                 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2514                                                 0, ctx_cmd) == 0)
2515                         sum++;
2516         }
2517
2518         return sum;
2519 }
2520
2521 void
2522 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2523                            struct lpfc_iocbq * rspiocb)
2524 {
2525         spin_lock_irq(phba->host->host_lock);
2526         lpfc_sli_release_iocbq(phba, cmdiocb);
2527         spin_unlock_irq(phba->host->host_lock);
2528         return;
2529 }
2530
2531 int
2532 lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2533                     uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
2534                     lpfc_ctx_cmd abort_cmd)
2535 {
2536         struct lpfc_iocbq *iocbq;
2537         struct lpfc_iocbq *abtsiocb;
2538         IOCB_t *cmd = NULL;
2539         int errcnt = 0, ret_val = 0;
2540         int i;
2541
2542         for (i = 1; i <= phba->sli.last_iotag; i++) {
2543                 iocbq = phba->sli.iocbq_lookup[i];
2544
2545                 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2546                                                 0, abort_cmd) != 0)
2547                         continue;
2548
2549                 /* issue ABTS for this IOCB based on iotag */
2550                 abtsiocb = lpfc_sli_get_iocbq(phba);
2551                 if (abtsiocb == NULL) {
2552                         errcnt++;
2553                         continue;
2554                 }
2555
2556                 cmd = &iocbq->iocb;
2557                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
2558                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
2559                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
2560                 abtsiocb->iocb.ulpLe = 1;
2561                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
2562
2563                 if (phba->hba_state >= LPFC_LINK_UP)
2564                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
2565                 else
2566                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
2567
2568                 /* Setup callback routine and issue the command. */
2569                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
2570                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
2571                 if (ret_val == IOCB_ERROR) {
2572                         lpfc_sli_release_iocbq(phba, abtsiocb);
2573                         errcnt++;
2574                         continue;
2575                 }
2576         }
2577
2578         return errcnt;
2579 }
2580
2581 static void
2582 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
2583                         struct lpfc_iocbq *cmdiocbq,
2584                         struct lpfc_iocbq *rspiocbq)
2585 {
2586         wait_queue_head_t *pdone_q;
2587         unsigned long iflags;
2588
2589         spin_lock_irqsave(phba->host->host_lock, iflags);
2590         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
2591         if (cmdiocbq->context2 && rspiocbq)
2592                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
2593                        &rspiocbq->iocb, sizeof(IOCB_t));
2594
2595         pdone_q = cmdiocbq->context_un.wait_queue;
2596         spin_unlock_irqrestore(phba->host->host_lock, iflags);
2597         if (pdone_q)
2598                 wake_up(pdone_q);
2599         return;
2600 }
2601
2602 /*
2603  * Issue the caller's iocb and wait for its completion, but no longer than the
2604  * caller's timeout.  Note that iocb_flags is cleared before the
2605  * lpfc_sli_issue_call since the wake routine sets a unique value and by
2606  * definition this is a wait function.
2607  */
2608 int
2609 lpfc_sli_issue_iocb_wait(struct lpfc_hba * phba,
2610                          struct lpfc_sli_ring * pring,
2611                          struct lpfc_iocbq * piocb,
2612                          struct lpfc_iocbq * prspiocbq,
2613                          uint32_t timeout)
2614 {
2615         DECLARE_WAIT_QUEUE_HEAD(done_q);
2616         long timeleft, timeout_req = 0;
2617         int retval = IOCB_SUCCESS;
2618
2619         /*
2620          * If the caller has provided a response iocbq buffer, then context2
2621          * is NULL or its an error.
2622          */
2623         if (prspiocbq) {
2624                 if (piocb->context2)
2625                         return IOCB_ERROR;
2626                 piocb->context2 = prspiocbq;
2627         }
2628
2629         piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
2630         piocb->context_un.wait_queue = &done_q;
2631         piocb->iocb_flag &= ~LPFC_IO_WAKE;
2632
2633         retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
2634         if (retval == IOCB_SUCCESS) {
2635                 timeout_req = timeout * HZ;
2636                 spin_unlock_irq(phba->host->host_lock);
2637                 timeleft = wait_event_timeout(done_q,
2638                                 piocb->iocb_flag & LPFC_IO_WAKE,
2639                                 timeout_req);
2640                 spin_lock_irq(phba->host->host_lock);
2641
2642                 if (timeleft == 0) {
2643                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2644                                         "%d:0329 IOCB wait timeout error - no "
2645                                         "wake response Data x%x\n",
2646                                         phba->brd_no, timeout);
2647                         retval = IOCB_TIMEDOUT;
2648                 } else if (!(piocb->iocb_flag & LPFC_IO_WAKE)) {
2649                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2650                                         "%d:0330 IOCB wake NOT set, "
2651                                         "Data x%x x%lx\n", phba->brd_no,
2652                                         timeout, (timeleft / jiffies));
2653                         retval = IOCB_TIMEDOUT;
2654                 } else {
2655                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2656                                         "%d:0331 IOCB wake signaled\n",
2657                                         phba->brd_no);
2658                 }
2659         } else {
2660                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2661                                 "%d:0332 IOCB wait issue failed, Data x%x\n",
2662                                 phba->brd_no, retval);
2663                 retval = IOCB_ERROR;
2664         }
2665
2666         if (prspiocbq)
2667                 piocb->context2 = NULL;
2668
2669         piocb->context_un.wait_queue = NULL;
2670         piocb->iocb_cmpl = NULL;
2671         return retval;
2672 }
2673
2674 int
2675 lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
2676                          uint32_t timeout)
2677 {
2678         DECLARE_WAIT_QUEUE_HEAD(done_q);
2679         DECLARE_WAITQUEUE(wq_entry, current);
2680         uint32_t timeleft = 0;
2681         int retval;
2682
2683         /* The caller must leave context1 empty. */
2684         if (pmboxq->context1 != 0) {
2685                 return (MBX_NOT_FINISHED);
2686         }
2687
2688         /* setup wake call as IOCB callback */
2689         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
2690         /* setup context field to pass wait_queue pointer to wake function  */
2691         pmboxq->context1 = &done_q;
2692
2693         /* start to sleep before we wait, to avoid races */
2694         set_current_state(TASK_INTERRUPTIBLE);
2695         add_wait_queue(&done_q, &wq_entry);
2696
2697         /* now issue the command */
2698         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
2699
2700         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
2701                 timeleft = schedule_timeout(timeout * HZ);
2702                 pmboxq->context1 = NULL;
2703                 /* if schedule_timeout returns 0, we timed out and were not
2704                    woken up */
2705                 if (timeleft == 0) {
2706                         retval = MBX_TIMEOUT;
2707                 } else {
2708                         retval = MBX_SUCCESS;
2709                 }
2710         }
2711
2712
2713         set_current_state(TASK_RUNNING);
2714         remove_wait_queue(&done_q, &wq_entry);
2715         return retval;
2716 }
2717
2718 irqreturn_t
2719 lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
2720 {
2721         struct lpfc_hba *phba;
2722         uint32_t ha_copy;
2723         uint32_t work_ha_copy;
2724         unsigned long status;
2725         int i;
2726         uint32_t control;
2727
2728         /*
2729          * Get the driver's phba structure from the dev_id and
2730          * assume the HBA is not interrupting.
2731          */
2732         phba = (struct lpfc_hba *) dev_id;
2733
2734         if (unlikely(!phba))
2735                 return IRQ_NONE;
2736
2737         phba->sli.slistat.sli_intr++;
2738
2739         /*
2740          * Call the HBA to see if it is interrupting.  If not, don't claim
2741          * the interrupt
2742          */
2743
2744         /* Ignore all interrupts during initialization. */
2745         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2746                 return IRQ_NONE;
2747
2748         /*
2749          * Read host attention register to determine interrupt source
2750          * Clear Attention Sources, except Error Attention (to
2751          * preserve status) and Link Attention
2752          */
2753         spin_lock(phba->host->host_lock);
2754         ha_copy = readl(phba->HAregaddr);
2755         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
2756         readl(phba->HAregaddr); /* flush */
2757         spin_unlock(phba->host->host_lock);
2758
2759         if (unlikely(!ha_copy))
2760                 return IRQ_NONE;
2761
2762         work_ha_copy = ha_copy & phba->work_ha_mask;
2763
2764         if (unlikely(work_ha_copy)) {
2765                 if (work_ha_copy & HA_LATT) {
2766                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
2767                                 /*
2768                                  * Turn off Link Attention interrupts
2769                                  * until CLEAR_LA done
2770                                  */
2771                                 spin_lock(phba->host->host_lock);
2772                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
2773                                 control = readl(phba->HCregaddr);
2774                                 control &= ~HC_LAINT_ENA;
2775                                 writel(control, phba->HCregaddr);
2776                                 readl(phba->HCregaddr); /* flush */
2777                                 spin_unlock(phba->host->host_lock);
2778                         }
2779                         else
2780                                 work_ha_copy &= ~HA_LATT;
2781                 }
2782
2783                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
2784                         for (i = 0; i < phba->sli.num_rings; i++) {
2785                                 if (work_ha_copy & (HA_RXATT << (4*i))) {
2786                                         /*
2787                                          * Turn off Slow Rings interrupts
2788                                          */
2789                                         spin_lock(phba->host->host_lock);
2790                                         control = readl(phba->HCregaddr);
2791                                         control &= ~(HC_R0INT_ENA << i);
2792                                         writel(control, phba->HCregaddr);
2793                                         readl(phba->HCregaddr); /* flush */
2794                                         spin_unlock(phba->host->host_lock);
2795                                 }
2796                         }
2797                 }
2798
2799                 if (work_ha_copy & HA_ERATT) {
2800                         phba->hba_state = LPFC_HBA_ERROR;
2801                         /*
2802                          * There was a link/board error.  Read the
2803                          * status register to retrieve the error event
2804                          * and process it.
2805                          */
2806                         phba->sli.slistat.err_attn_event++;
2807                         /* Save status info */
2808                         phba->work_hs = readl(phba->HSregaddr);
2809                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
2810                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
2811
2812                         /* Clear Chip error bit */
2813                         writel(HA_ERATT, phba->HAregaddr);
2814                         readl(phba->HAregaddr); /* flush */
2815
2816                         /*
2817                          * Reseting the HBA is the only reliable way
2818                          * to shutdown interrupt when there is a
2819                          * ERROR.
2820                          */
2821                         lpfc_sli_send_reset(phba, phba->hba_state);
2822                 }
2823
2824                 spin_lock(phba->host->host_lock);
2825                 phba->work_ha |= work_ha_copy;
2826                 if (phba->work_wait)
2827                         wake_up(phba->work_wait);
2828                 spin_unlock(phba->host->host_lock);
2829         }
2830
2831         ha_copy &= ~(phba->work_ha_mask);
2832
2833         /*
2834          * Process all events on FCP ring.  Take the optimized path for
2835          * FCP IO.  Any other IO is slow path and is handled by
2836          * the worker thread.
2837          */
2838         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
2839         status >>= (4*LPFC_FCP_RING);
2840         if (status & HA_RXATT)
2841                 lpfc_sli_handle_fast_ring_event(phba,
2842                                                 &phba->sli.ring[LPFC_FCP_RING],
2843                                                 status);
2844         return IRQ_HANDLED;
2845
2846 } /* lpfc_intr_handler */