drivers/scsi/lpfc/lpfc_sli.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2006 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/pci.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/delay.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_cmnd.h>
  29 #include <scsi/scsi_device.h>
  30 #include <scsi/scsi_host.h>
  31 #include <scsi/scsi_transport_fc.h>
  32
  33 #include "lpfc_hw.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_disc.h"
  36 #include "lpfc_scsi.h"
  37 #include "lpfc.h"
  38 #include "lpfc_crtn.h"
  39 #include "lpfc_logmsg.h"
  40 #include "lpfc_compat.h"
  41
  42 /*
  43  * Define macro to log: Mailbox command x%x cannot issue Data
  44  * This allows multiple uses of lpfc_msgBlk0311
  45  * w/o perturbing log msg utility.
  46  */
  47 #define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \
  48                         lpfc_printf_log(phba, \
  49                                 KERN_INFO, \
  50                                 LOG_MBOX | LOG_SLI, \
  51                                 "%d:0311 Mailbox command x%x cannot issue " \
  52                                 "Data: x%x x%x x%x\n", \
  53                                 phba->brd_no, \
  54                                 mb->mbxCommand,         \
  55                                 phba->hba_state,        \
  56                                 psli->sli_flag, \
  57                                 flag);
  58
  59
  60 /* There are only four IOCB completion types. */
  61 typedef enum _lpfc_iocb_type {
  62         LPFC_UNKNOWN_IOCB,
  63         LPFC_UNSOL_IOCB,
  64         LPFC_SOL_IOCB,
  65         LPFC_ABORT_IOCB
  66 } lpfc_iocb_type;
  67
  68 struct lpfc_iocbq *
  69 lpfc_sli_get_iocbq(struct lpfc_hba * phba)
  70 {
  71         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
  72         struct lpfc_iocbq * iocbq = NULL;
  73
  74         list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
  75         return iocbq;
  76 }
  77
  78 void
  79 lpfc_sli_release_iocbq(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
  80 {
  81         size_t start_clean = (size_t)(&((struct lpfc_iocbq *)NULL)->iocb);
  82
  83         /*
  84          * Clean all volatile data fields, preserve iotag and node struct.
  85          */
  86         memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
  87         list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
  88 }
  89
  90 /*
  91  * Translate the iocb command to an iocb command type used to decide the final
  92  * disposition of each completed IOCB.
  93  */
  94 static lpfc_iocb_type
  95 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
  96 {
  97         lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
  98
  99         if (iocb_cmnd > CMD_MAX_IOCB_CMD)
 100                 return 0;
 101
 102         switch (iocb_cmnd) {
 103         case CMD_XMIT_SEQUENCE_CR:
 104         case CMD_XMIT_SEQUENCE_CX:
 105         case CMD_XMIT_BCAST_CN:
 106         case CMD_XMIT_BCAST_CX:
 107         case CMD_ELS_REQUEST_CR:
 108         case CMD_ELS_REQUEST_CX:
 109         case CMD_CREATE_XRI_CR:
 110         case CMD_CREATE_XRI_CX:
 111         case CMD_GET_RPI_CN:
 112         case CMD_XMIT_ELS_RSP_CX:
 113         case CMD_GET_RPI_CR:
 114         case CMD_FCP_IWRITE_CR:
 115         case CMD_FCP_IWRITE_CX:
 116         case CMD_FCP_IREAD_CR:
 117         case CMD_FCP_IREAD_CX:
 118         case CMD_FCP_ICMND_CR:
 119         case CMD_FCP_ICMND_CX:
 120         case CMD_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_KILL_BOARD:
 517         case MBX_CONFIG_FARP:
 518         case MBX_BEACON:
 519         case MBX_LOAD_AREA:
 520         case MBX_RUN_BIU_DIAG64:
 521         case MBX_CONFIG_PORT:
 522         case MBX_READ_SPARM64:
 523         case MBX_READ_RPI64:
 524         case MBX_REG_LOGIN64:
 525         case MBX_READ_LA64:
 526         case MBX_FLASH_WR_ULA:
 527         case MBX_SET_DEBUG:
 528         case MBX_LOAD_EXP_ROM:
 529                 ret = mbxCommand;
 530                 break;
 531         default:
 532                 ret = MBX_SHUTDOWN;
 533                 break;
 534         }
 535         return (ret);
 536 }
 537 static void
 538 lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 539 {
 540         wait_queue_head_t *pdone_q;
 541
 542         /*
 543          * If pdone_q is empty, the driver thread gave up waiting and
 544          * continued running.
 545          */
 546         pdone_q = (wait_queue_head_t *) pmboxq->context1;
 547         if (pdone_q)
 548                 wake_up_interruptible(pdone_q);
 549         return;
 550 }
 551
 552 void
 553 lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
 554 {
 555         struct lpfc_dmabuf *mp;
 556         mp = (struct lpfc_dmabuf *) (pmb->context1);
 557         if (mp) {
 558                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 559                 kfree(mp);
 560         }
 561         mempool_free( pmb, phba->mbox_mem_pool);
 562         return;
 563 }
 564
 565 int
 566 lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
 567 {
 568         MAILBOX_t *mbox;
 569         MAILBOX_t *pmbox;
 570         LPFC_MBOXQ_t *pmb;
 571         struct lpfc_sli *psli;
 572         int i, rc;
 573         uint32_t process_next;
 574
 575         psli = &phba->sli;
 576         /* We should only get here if we are in SLI2 mode */
 577         if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
 578                 return (1);
 579         }
 580
 581         phba->sli.slistat.mbox_event++;
 582
 583         /* Get a Mailbox buffer to setup mailbox commands for callback */
 584         if ((pmb = phba->sli.mbox_active)) {
 585                 pmbox = &pmb->mb;
 586                 mbox = &phba->slim2p->mbx;
 587
 588                 /* First check out the status word */
 589                 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
 590
 591                 /* Sanity check to ensure the host owns the mailbox */
 592                 if (pmbox->mbxOwner != OWN_HOST) {
 593                         /* Lets try for a while */
 594                         for (i = 0; i < 10240; i++) {
 595                                 /* First copy command data */
 596                                 lpfc_sli_pcimem_bcopy(mbox, pmbox,
 597                                                         sizeof (uint32_t));
 598                                 if (pmbox->mbxOwner == OWN_HOST)
 599                                         goto mbout;
 600                         }
 601                         /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
 602                            <status> */
 603                         lpfc_printf_log(phba,
 604                                         KERN_ERR,
 605                                         LOG_MBOX | LOG_SLI,
 606                                         "%d:0304 Stray Mailbox Interrupt "
 607                                         "mbxCommand x%x mbxStatus x%x\n",
 608                                         phba->brd_no,
 609                                         pmbox->mbxCommand,
 610                                         pmbox->mbxStatus);
 611
 612                         spin_lock_irq(phba->host->host_lock);
 613                         phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
 614                         spin_unlock_irq(phba->host->host_lock);
 615                         return (1);
 616                 }
 617
 618               mbout:
 619                 del_timer_sync(&phba->sli.mbox_tmo);
 620                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
 621
 622                 /*
 623                  * It is a fatal error if unknown mbox command completion.
 624                  */
 625                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
 626                     MBX_SHUTDOWN) {
 627
 628                         /* Unknow mailbox command compl */
 629                         lpfc_printf_log(phba,
 630                                 KERN_ERR,
 631                                 LOG_MBOX | LOG_SLI,
 632                                 "%d:0323 Unknown Mailbox command %x Cmpl\n",
 633                                 phba->brd_no,
 634                                 pmbox->mbxCommand);
 635                         phba->hba_state = LPFC_HBA_ERROR;
 636                         phba->work_hs = HS_FFER3;
 637                         lpfc_handle_eratt(phba);
 638                         return (0);
 639                 }
 640
 641                 phba->sli.mbox_active = NULL;
 642                 if (pmbox->mbxStatus) {
 643                         phba->sli.slistat.mbox_stat_err++;
 644                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
 645                                 /* Mbox cmd cmpl error - RETRYing */
 646                                 lpfc_printf_log(phba,
 647                                         KERN_INFO,
 648                                         LOG_MBOX | LOG_SLI,
 649                                         "%d:0305 Mbox cmd cmpl error - "
 650                                         "RETRYing Data: x%x x%x x%x x%x\n",
 651                                         phba->brd_no,
 652                                         pmbox->mbxCommand,
 653                                         pmbox->mbxStatus,
 654                                         pmbox->un.varWords[0],
 655                                         phba->hba_state);
 656                                 pmbox->mbxStatus = 0;
 657                                 pmbox->mbxOwner = OWN_HOST;
 658                                 spin_lock_irq(phba->host->host_lock);
 659                                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 660                                 spin_unlock_irq(phba->host->host_lock);
 661                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 662                                 if (rc == MBX_SUCCESS)
 663                                         return (0);
 664                         }
 665                 }
 666
 667                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
 668                 lpfc_printf_log(phba,
 669                                 KERN_INFO,
 670                                 LOG_MBOX | LOG_SLI,
 671                                 "%d:0307 Mailbox cmd x%x Cmpl x%p "
 672                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
 673                                 phba->brd_no,
 674                                 pmbox->mbxCommand,
 675                                 pmb->mbox_cmpl,
 676                                 *((uint32_t *) pmbox),
 677                                 pmbox->un.varWords[0],
 678                                 pmbox->un.varWords[1],
 679                                 pmbox->un.varWords[2],
 680                                 pmbox->un.varWords[3],
 681                                 pmbox->un.varWords[4],
 682                                 pmbox->un.varWords[5],
 683                                 pmbox->un.varWords[6],
 684                                 pmbox->un.varWords[7]);
 685
 686                 if (pmb->mbox_cmpl) {
 687                         lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
 688                         pmb->mbox_cmpl(phba,pmb);
 689                 }
 690         }
 691
 692
 693         do {
 694                 process_next = 0;       /* by default don't loop */
 695                 spin_lock_irq(phba->host->host_lock);
 696                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
 697
 698                 /* Process next mailbox command if there is one */
 699                 if ((pmb = lpfc_mbox_get(phba))) {
 700                         spin_unlock_irq(phba->host->host_lock);
 701                         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 702                         if (rc == MBX_NOT_FINISHED) {
 703                                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
 704                                 pmb->mbox_cmpl(phba,pmb);
 705                                 process_next = 1;
 706                                 continue;       /* loop back */
 707                         }
 708                 } else {
 709                         spin_unlock_irq(phba->host->host_lock);
 710                         /* Turn on IOCB processing */
 711                         for (i = 0; i < phba->sli.num_rings; i++) {
 712                                 lpfc_sli_turn_on_ring(phba, i);
 713                         }
 714
 715                         /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
 716                         while (!list_empty(&phba->freebufList)) {
 717                                 struct lpfc_dmabuf *mp;
 718
 719                                 mp = NULL;
 720                                 list_remove_head((&phba->freebufList),
 721                                                  mp,
 722                                                  struct lpfc_dmabuf,
 723                                                  list);
 724                                 if (mp) {
 725                                         lpfc_mbuf_free(phba, mp->virt,
 726                                                        mp->phys);
 727                                         kfree(mp);
 728                                 }
 729                         }
 730                 }
 731
 732         } while (process_next);
 733
 734         return (0);
 735 }
 736 static int
 737 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 738                             struct lpfc_iocbq *saveq)
 739 {
 740         IOCB_t           * irsp;
 741         WORD5            * w5p;
 742         uint32_t           Rctl, Type;
 743         uint32_t           match, i;
 744
 745         match = 0;
 746         irsp = &(saveq->iocb);
 747         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
 748             || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
 749                 Rctl = FC_ELS_REQ;
 750                 Type = FC_ELS_DATA;
 751         } else {
 752                 w5p =
 753                     (WORD5 *) & (saveq->iocb.un.
 754                                  ulpWord[5]);
 755                 Rctl = w5p->hcsw.Rctl;
 756                 Type = w5p->hcsw.Type;
 757
 758                 /* Firmware Workaround */
 759                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
 760                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
 761                         Rctl = FC_ELS_REQ;
 762                         Type = FC_ELS_DATA;
 763                         w5p->hcsw.Rctl = Rctl;
 764                         w5p->hcsw.Type = Type;
 765                 }
 766         }
 767         /* unSolicited Responses */
 768         if (pring->prt[0].profile) {
 769                 if (pring->prt[0].lpfc_sli_rcv_unsol_event)
 770                         (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
 771                                                                         saveq);
 772                 match = 1;
 773         } else {
 774                 /* We must search, based on rctl / type
 775                    for the right routine */
 776                 for (i = 0; i < pring->num_mask;
 777                      i++) {
 778                         if ((pring->prt[i].rctl ==
 779                              Rctl)
 780                             && (pring->prt[i].
 781                                 type == Type)) {
 782                                 if (pring->prt[i].lpfc_sli_rcv_unsol_event)
 783                                         (pring->prt[i].lpfc_sli_rcv_unsol_event)
 784                                                         (phba, pring, saveq);
 785                                 match = 1;
 786                                 break;
 787                         }
 788                 }
 789         }
 790         if (match == 0) {
 791                 /* Unexpected Rctl / Type received */
 792                 /* Ring <ringno> handler: unexpected
 793                    Rctl <Rctl> Type <Type> received */
 794                 lpfc_printf_log(phba,
 795                                 KERN_WARNING,
 796                                 LOG_SLI,
 797                                 "%d:0313 Ring %d handler: unexpected Rctl x%x "
 798                                 "Type x%x received \n",
 799                                 phba->brd_no,
 800                                 pring->ringno,
 801                                 Rctl,
 802                                 Type);
 803         }
 804         return(1);
 805 }
 806
 807 static struct lpfc_iocbq *
 808 lpfc_sli_iocbq_lookup(struct lpfc_hba * phba,
 809                       struct lpfc_sli_ring * pring,
 810                       struct lpfc_iocbq * prspiocb)
 811 {
 812         struct lpfc_iocbq *cmd_iocb = NULL;
 813         uint16_t iotag;
 814
 815         iotag = prspiocb->iocb.ulpIoTag;
 816
 817         if (iotag != 0 && iotag <= phba->sli.last_iotag) {
 818                 cmd_iocb = phba->sli.iocbq_lookup[iotag];
 819                 list_del(&cmd_iocb->list);
 820                 pring->txcmplq_cnt--;
 821                 return cmd_iocb;
 822         }
 823
 824         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 825                         "%d:0317 iotag x%x is out off "
 826                         "range: max iotag x%x wd0 x%x\n",
 827                         phba->brd_no, iotag,
 828                         phba->sli.last_iotag,
 829                         *(((uint32_t *) &prspiocb->iocb) + 7));
 830         return NULL;
 831 }
 832
 833 static int
 834 lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
 835                           struct lpfc_iocbq *saveq)
 836 {
 837         struct lpfc_iocbq * cmdiocbp;
 838         int rc = 1;
 839         unsigned long iflag;
 840
 841         /* Based on the iotag field, get the cmd IOCB from the txcmplq */
 842         spin_lock_irqsave(phba->host->host_lock, iflag);
 843         cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
 844         if (cmdiocbp) {
 845                 if (cmdiocbp->iocb_cmpl) {
 846                         /*
 847                          * Post all ELS completions to the worker thread.
 848                          * All other are passed to the completion callback.
 849                          */
 850                         if (pring->ringno == LPFC_ELS_RING) {
 851                                 spin_unlock_irqrestore(phba->host->host_lock,
 852                                                        iflag);
 853                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
 854                                 spin_lock_irqsave(phba->host->host_lock, iflag);
 855                         }
 856                         else {
 857                                 spin_unlock_irqrestore(phba->host->host_lock,
 858                                                        iflag);
 859                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
 860                                 spin_lock_irqsave(phba->host->host_lock, iflag);
 861                         }
 862                 } else
 863                         lpfc_sli_release_iocbq(phba, cmdiocbp);
 864         } else {
 865                 /*
 866                  * Unknown initiating command based on the response iotag.
 867                  * This could be the case on the ELS ring because of
 868                  * lpfc_els_abort().
 869                  */
 870                 if (pring->ringno != LPFC_ELS_RING) {
 871                         /*
 872                          * Ring <ringno> handler: unexpected completion IoTag
 873                          * <IoTag>
 874                          */
 875                         lpfc_printf_log(phba,
 876                                 KERN_WARNING,
 877                                 LOG_SLI,
 878                                 "%d:0322 Ring %d handler: unexpected "
 879                                 "completion IoTag x%x Data: x%x x%x x%x x%x\n",
 880                                 phba->brd_no,
 881                                 pring->ringno,
 882                                 saveq->iocb.ulpIoTag,
 883                                 saveq->iocb.ulpStatus,
 884                                 saveq->iocb.un.ulpWord[4],
 885                                 saveq->iocb.ulpCommand,
 886                                 saveq->iocb.ulpContext);
 887                 }
 888         }
 889
 890         spin_unlock_irqrestore(phba->host->host_lock, iflag);
 891         return rc;
 892 }
 893
 894 static void lpfc_sli_rsp_pointers_error(struct lpfc_hba * phba,
 895                                         struct lpfc_sli_ring * pring)
 896 {
 897         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
 898         /*
 899          * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
 900          * rsp ring <portRspMax>
 901          */
 902         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
 903                         "%d:0312 Ring %d handler: portRspPut %d "
 904                         "is bigger then rsp ring %d\n",
 905                         phba->brd_no, pring->ringno,
 906                         le32_to_cpu(pgp->rspPutInx),
 907                         pring->numRiocb);
 908
 909         phba->hba_state = LPFC_HBA_ERROR;
 910
 911         /*
 912          * All error attention handlers are posted to
 913          * worker thread
 914          */
 915         phba->work_ha |= HA_ERATT;
 916         phba->work_hs = HS_FFER3;
 917         if (phba->work_wait)
 918                 wake_up(phba->work_wait);
 919
 920         return;
 921 }
 922
 923 void lpfc_sli_poll_fcp_ring(struct lpfc_hba * phba)
 924 {
 925         struct lpfc_sli      * psli   = &phba->sli;
 926         struct lpfc_sli_ring * pring = &psli->ring[LPFC_FCP_RING];
 927         IOCB_t *irsp = NULL;
 928         IOCB_t *entry = NULL;
 929         struct lpfc_iocbq *cmdiocbq = NULL;
 930         struct lpfc_iocbq rspiocbq;
 931         struct lpfc_pgp *pgp;
 932         uint32_t status;
 933         uint32_t portRspPut, portRspMax;
 934         int type;
 935         uint32_t rsp_cmpl = 0;
 936         void __iomem *to_slim;
 937         uint32_t ha_copy;
 938
 939         pring->stats.iocb_event++;
 940
 941         /* The driver assumes SLI-2 mode */
 942         pgp =  &phba->slim2p->mbx.us.s2.port[pring->ringno];
 943
 944         /*
 945          * The next available response entry should never exceed the maximum
 946          * entries.  If it does, treat it as an adapter hardware error.
 947          */
 948         portRspMax = pring->numRiocb;
 949         portRspPut = le32_to_cpu(pgp->rspPutInx);
 950         if (unlikely(portRspPut >= portRspMax)) {
 951                 lpfc_sli_rsp_pointers_error(phba, pring);
 952                 return;
 953         }
 954
 955         rmb();
 956         while (pring->rspidx != portRspPut) {
 957
 958                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
 959
 960                 if (++pring->rspidx >= portRspMax)
 961                         pring->rspidx = 0;
 962
 963                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
 964                                       (uint32_t *) &rspiocbq.iocb,
 965                                       sizeof (IOCB_t));
 966                 irsp = &rspiocbq.iocb;
 967                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
 968                 pring->stats.iocb_rsp++;
 969                 rsp_cmpl++;
 970
 971                 if (unlikely(irsp->ulpStatus)) {
 972                         /* Rsp ring <ringno> error: IOCB */
 973                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
 974                                         "%d:0326 Rsp Ring %d error: IOCB Data: "
 975                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
 976                                         phba->brd_no, pring->ringno,
 977                                         irsp->un.ulpWord[0],
 978                                         irsp->un.ulpWord[1],
 979                                         irsp->un.ulpWord[2],
 980                                         irsp->un.ulpWord[3],
 981                                         irsp->un.ulpWord[4],
 982                                         irsp->un.ulpWord[5],
 983                                         *(((uint32_t *) irsp) + 6),
 984                                         *(((uint32_t *) irsp) + 7));
 985                 }
 986
 987                 switch (type) {
 988                 case LPFC_ABORT_IOCB:
 989                 case LPFC_SOL_IOCB:
 990                         /*
 991                          * Idle exchange closed via ABTS from port.  No iocb
 992                          * resources need to be recovered.
 993                          */
 994                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
 995                                 printk(KERN_INFO "%s: IOCB cmd 0x%x processed."
 996                                        " Skipping completion\n", __FUNCTION__,
 997                                        irsp->ulpCommand);
 998                                 break;
 999                         }
1000
1001                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1002                                                          &rspiocbq);
1003                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1004                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1005                                                       &rspiocbq);
1006                         }
1007                         break;
1008                 default:
1009                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1010                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1011                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1012                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1013                                        MAX_MSG_DATA);
1014                                 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1015                                          phba->brd_no, adaptermsg);
1016                         } else {
1017                                 /* Unknown IOCB command */
1018                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1019                                                 "%d:0321 Unknown IOCB command "
1020                                                 "Data: x%x, x%x x%x x%x x%x\n",
1021                                                 phba->brd_no, type,
1022                                                 irsp->ulpCommand,
1023                                                 irsp->ulpStatus,
1024                                                 irsp->ulpIoTag,
1025                                                 irsp->ulpContext);
1026                         }
1027                         break;
1028                 }
1029
1030                 /*
1031                  * The response IOCB has been processed.  Update the ring
1032                  * pointer in SLIM.  If the port response put pointer has not
1033                  * been updated, sync the pgp->rspPutInx and fetch the new port
1034                  * response put pointer.
1035                  */
1036                 to_slim = phba->MBslimaddr +
1037                         (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1038                 writeb(pring->rspidx, to_slim);
1039
1040                 if (pring->rspidx == portRspPut)
1041                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1042         }
1043
1044         ha_copy = readl(phba->HAregaddr);
1045         ha_copy >>= (LPFC_FCP_RING * 4);
1046
1047         if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
1048                 pring->stats.iocb_rsp_full++;
1049                 status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
1050                 writel(status, phba->CAregaddr);
1051                 readl(phba->CAregaddr);
1052         }
1053         if ((ha_copy & HA_R0CE_RSP) &&
1054             (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1055                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1056                 pring->stats.iocb_cmd_empty++;
1057
1058                 /* Force update of the local copy of cmdGetInx */
1059                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1060                 lpfc_sli_resume_iocb(phba, pring);
1061
1062                 if ((pring->lpfc_sli_cmd_available))
1063                         (pring->lpfc_sli_cmd_available) (phba, pring);
1064
1065         }
1066
1067         return;
1068 }
1069
1070 /*
1071  * This routine presumes LPFC_FCP_RING handling and doesn't bother
1072  * to check it explicitly.
1073  */
1074 static int
1075 lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
1076                                 struct lpfc_sli_ring * pring, uint32_t mask)
1077 {
1078         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1079         IOCB_t *irsp = NULL;
1080         IOCB_t *entry = NULL;
1081         struct lpfc_iocbq *cmdiocbq = NULL;
1082         struct lpfc_iocbq rspiocbq;
1083         uint32_t status;
1084         uint32_t portRspPut, portRspMax;
1085         int rc = 1;
1086         lpfc_iocb_type type;
1087         unsigned long iflag;
1088         uint32_t rsp_cmpl = 0;
1089         void __iomem  *to_slim;
1090
1091         spin_lock_irqsave(phba->host->host_lock, iflag);
1092         pring->stats.iocb_event++;
1093
1094         /*
1095          * The next available response entry should never exceed the maximum
1096          * entries.  If it does, treat it as an adapter hardware error.
1097          */
1098         portRspMax = pring->numRiocb;
1099         portRspPut = le32_to_cpu(pgp->rspPutInx);
1100         if (unlikely(portRspPut >= portRspMax)) {
1101                 lpfc_sli_rsp_pointers_error(phba, pring);
1102                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1103                 return 1;
1104         }
1105
1106         rmb();
1107         while (pring->rspidx != portRspPut) {
1108                 /*
1109                  * Fetch an entry off the ring and copy it into a local data
1110                  * structure.  The copy involves a byte-swap since the
1111                  * network byte order and pci byte orders are different.
1112                  */
1113                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1114
1115                 if (++pring->rspidx >= portRspMax)
1116                         pring->rspidx = 0;
1117
1118                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1119                                       (uint32_t *) &rspiocbq.iocb,
1120                                       sizeof (IOCB_t));
1121                 irsp = &rspiocbq.iocb;
1122
1123                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1124                 pring->stats.iocb_rsp++;
1125                 rsp_cmpl++;
1126
1127                 if (unlikely(irsp->ulpStatus)) {
1128                         /* Rsp ring <ringno> error: IOCB */
1129                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1130                                 "%d:0326 Rsp Ring %d error: IOCB Data: "
1131                                 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1132                                 phba->brd_no, pring->ringno,
1133                                 irsp->un.ulpWord[0], irsp->un.ulpWord[1],
1134                                 irsp->un.ulpWord[2], irsp->un.ulpWord[3],
1135                                 irsp->un.ulpWord[4], irsp->un.ulpWord[5],
1136                                 *(((uint32_t *) irsp) + 6),
1137                                 *(((uint32_t *) irsp) + 7));
1138                 }
1139
1140                 switch (type) {
1141                 case LPFC_ABORT_IOCB:
1142                 case LPFC_SOL_IOCB:
1143                         /*
1144                          * Idle exchange closed via ABTS from port.  No iocb
1145                          * resources need to be recovered.
1146                          */
1147                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1148                                 printk(KERN_INFO "%s: IOCB cmd 0x%x processed. "
1149                                        "Skipping completion\n", __FUNCTION__,
1150                                        irsp->ulpCommand);
1151                                 break;
1152                         }
1153
1154                         cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1155                                                          &rspiocbq);
1156                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1157                                 spin_unlock_irqrestore(
1158                                        phba->host->host_lock, iflag);
1159                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1160                                                       &rspiocbq);
1161                                 spin_lock_irqsave(phba->host->host_lock,
1162                                                   iflag);
1163                         }
1164                         break;
1165                 default:
1166                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1167                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1168                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1169                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1170                                        MAX_MSG_DATA);
1171                                 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1172                                          phba->brd_no, adaptermsg);
1173                         } else {
1174                                 /* Unknown IOCB command */
1175                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1176                                         "%d:0321 Unknown IOCB command "
1177                                         "Data: x%x, x%x x%x x%x x%x\n",
1178                                         phba->brd_no, type, irsp->ulpCommand,
1179                                         irsp->ulpStatus, irsp->ulpIoTag,
1180                                         irsp->ulpContext);
1181                         }
1182                         break;
1183                 }
1184
1185                 /*
1186                  * The response IOCB has been processed.  Update the ring
1187                  * pointer in SLIM.  If the port response put pointer has not
1188                  * been updated, sync the pgp->rspPutInx and fetch the new port
1189                  * response put pointer.
1190                  */
1191                 to_slim = phba->MBslimaddr +
1192                         (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1193                 writel(pring->rspidx, to_slim);
1194
1195                 if (pring->rspidx == portRspPut)
1196                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1197         }
1198
1199         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1200                 pring->stats.iocb_rsp_full++;
1201                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1202                 writel(status, phba->CAregaddr);
1203                 readl(phba->CAregaddr);
1204         }
1205         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1206                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1207                 pring->stats.iocb_cmd_empty++;
1208
1209                 /* Force update of the local copy of cmdGetInx */
1210                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1211                 lpfc_sli_resume_iocb(phba, pring);
1212
1213                 if ((pring->lpfc_sli_cmd_available))
1214                         (pring->lpfc_sli_cmd_available) (phba, pring);
1215
1216         }
1217
1218         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1219         return rc;
1220 }
1221
1222
1223 int
1224 lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
1225                            struct lpfc_sli_ring * pring, uint32_t mask)
1226 {
1227         IOCB_t *entry;
1228         IOCB_t *irsp = NULL;
1229         struct lpfc_iocbq *rspiocbp = NULL;
1230         struct lpfc_iocbq *next_iocb;
1231         struct lpfc_iocbq *cmdiocbp;
1232         struct lpfc_iocbq *saveq;
1233         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1234         uint8_t iocb_cmd_type;
1235         lpfc_iocb_type type;
1236         uint32_t status, free_saveq;
1237         uint32_t portRspPut, portRspMax;
1238         int rc = 1;
1239         unsigned long iflag;
1240         void __iomem  *to_slim;
1241
1242         spin_lock_irqsave(phba->host->host_lock, iflag);
1243         pring->stats.iocb_event++;
1244
1245         /*
1246          * The next available response entry should never exceed the maximum
1247          * entries.  If it does, treat it as an adapter hardware error.
1248          */
1249         portRspMax = pring->numRiocb;
1250         portRspPut = le32_to_cpu(pgp->rspPutInx);
1251         if (portRspPut >= portRspMax) {
1252                 /*
1253                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1254                  * rsp ring <portRspMax>
1255                  */
1256                 lpfc_printf_log(phba,
1257                                 KERN_ERR,
1258                                 LOG_SLI,
1259                                 "%d:0312 Ring %d handler: portRspPut %d "
1260                                 "is bigger then rsp ring %d\n",
1261                                 phba->brd_no,
1262                                 pring->ringno, portRspPut, portRspMax);
1263
1264                 phba->hba_state = LPFC_HBA_ERROR;
1265                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1266
1267                 phba->work_hs = HS_FFER3;
1268                 lpfc_handle_eratt(phba);
1269
1270                 return 1;
1271         }
1272
1273         rmb();
1274         while (pring->rspidx != portRspPut) {
1275                 /*
1276                  * Build a completion list and call the appropriate handler.
1277                  * The process is to get the next available response iocb, get
1278                  * a free iocb from the list, copy the response data into the
1279                  * free iocb, insert to the continuation list, and update the
1280                  * next response index to slim.  This process makes response
1281                  * iocb's in the ring available to DMA as fast as possible but
1282                  * pays a penalty for a copy operation.  Since the iocb is
1283                  * only 32 bytes, this penalty is considered small relative to
1284                  * the PCI reads for register values and a slim write.  When
1285                  * the ulpLe field is set, the entire Command has been
1286                  * received.
1287                  */
1288                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1289                 rspiocbp = lpfc_sli_get_iocbq(phba);
1290                 if (rspiocbp == NULL) {
1291                         printk(KERN_ERR "%s: out of buffers! Failing "
1292                                "completion.\n", __FUNCTION__);
1293                         break;
1294                 }
1295
1296                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
1297                 irsp = &rspiocbp->iocb;
1298
1299                 if (++pring->rspidx >= portRspMax)
1300                         pring->rspidx = 0;
1301
1302                 to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
1303                                               + 1) * 4;
1304                 writel(pring->rspidx, to_slim);
1305
1306                 if (list_empty(&(pring->iocb_continueq))) {
1307                         list_add(&rspiocbp->list, &(pring->iocb_continueq));
1308                 } else {
1309                         list_add_tail(&rspiocbp->list,
1310                                       &(pring->iocb_continueq));
1311                 }
1312
1313                 pring->iocb_continueq_cnt++;
1314                 if (irsp->ulpLe) {
1315                         /*
1316                          * By default, the driver expects to free all resources
1317                          * associated with this iocb completion.
1318                          */
1319                         free_saveq = 1;
1320                         saveq = list_get_first(&pring->iocb_continueq,
1321                                                struct lpfc_iocbq, list);
1322                         irsp = &(saveq->iocb);
1323                         list_del_init(&pring->iocb_continueq);
1324                         pring->iocb_continueq_cnt = 0;
1325
1326                         pring->stats.iocb_rsp++;
1327
1328                         if (irsp->ulpStatus) {
1329                                 /* Rsp ring <ringno> error: IOCB */
1330                                 lpfc_printf_log(phba,
1331                                         KERN_WARNING,
1332                                         LOG_SLI,
1333                                         "%d:0328 Rsp Ring %d error: IOCB Data: "
1334                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1335                                         phba->brd_no,
1336                                         pring->ringno,
1337                                         irsp->un.ulpWord[0],
1338                                         irsp->un.ulpWord[1],
1339                                         irsp->un.ulpWord[2],
1340                                         irsp->un.ulpWord[3],
1341                                         irsp->un.ulpWord[4],
1342                                         irsp->un.ulpWord[5],
1343                                         *(((uint32_t *) irsp) + 6),
1344                                         *(((uint32_t *) irsp) + 7));
1345                         }
1346
1347                         /*
1348                          * Fetch the IOCB command type and call the correct
1349                          * completion routine.  Solicited and Unsolicited
1350                          * IOCBs on the ELS ring get freed back to the
1351                          * lpfc_iocb_list by the discovery kernel thread.
1352                          */
1353                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1354                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1355                         if (type == LPFC_SOL_IOCB) {
1356                                 spin_unlock_irqrestore(phba->host->host_lock,
1357                                                        iflag);
1358                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1359                                         saveq);
1360                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1361                         } else if (type == LPFC_UNSOL_IOCB) {
1362                                 spin_unlock_irqrestore(phba->host->host_lock,
1363                                                        iflag);
1364                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1365                                         saveq);
1366                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1367                         } else if (type == LPFC_ABORT_IOCB) {
1368                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1369                                     ((cmdiocbp =
1370                                       lpfc_sli_iocbq_lookup(phba, pring,
1371                                                             saveq)))) {
1372                                         /* Call the specified completion
1373                                            routine */
1374                                         if (cmdiocbp->iocb_cmpl) {
1375                                                 spin_unlock_irqrestore(
1376                                                        phba->host->host_lock,
1377                                                        iflag);
1378                                                 (cmdiocbp->iocb_cmpl) (phba,
1379                                                              cmdiocbp, saveq);
1380                                                 spin_lock_irqsave(
1381                                                           phba->host->host_lock,
1382                                                           iflag);
1383                                         } else
1384                                                 lpfc_sli_release_iocbq(phba,
1385                                                                       cmdiocbp);
1386                                 }
1387                         } else if (type == LPFC_UNKNOWN_IOCB) {
1388                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1389
1390                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1391
1392                                         memset(adaptermsg, 0,
1393                                                LPFC_MAX_ADPTMSG);
1394                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1395                                                MAX_MSG_DATA);
1396                                         dev_warn(&((phba->pcidev)->dev),
1397                                                  "lpfc%d: %s",
1398                                                  phba->brd_no, adaptermsg);
1399                                 } else {
1400                                         /* Unknown IOCB command */
1401                                         lpfc_printf_log(phba,
1402                                                 KERN_ERR,
1403                                                 LOG_SLI,
1404                                                 "%d:0321 Unknown IOCB command "
1405                                                 "Data: x%x x%x x%x x%x\n",
1406                                                 phba->brd_no,
1407                                                 irsp->ulpCommand,
1408                                                 irsp->ulpStatus,
1409                                                 irsp->ulpIoTag,
1410                                                 irsp->ulpContext);
1411                                 }
1412                         }
1413
1414                         if (free_saveq) {
1415                                 if (!list_empty(&saveq->list)) {
1416                                         list_for_each_entry_safe(rspiocbp,
1417                                                                  next_iocb,
1418                                                                  &saveq->list,
1419                                                                  list) {
1420                                                 lpfc_sli_release_iocbq(phba,
1421                                                                      rspiocbp);
1422                                         }
1423                                 }
1424
1425                                 lpfc_sli_release_iocbq(phba, saveq);
1426                         }
1427                 }
1428
1429                 /*
1430                  * If the port response put pointer has not been updated, sync
1431                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1432                  * response put pointer.
1433                  */
1434                 if (pring->rspidx == portRspPut) {
1435                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1436                 }
1437         } /* while (pring->rspidx != portRspPut) */
1438
1439         if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
1440                 /* At least one response entry has been freed */
1441                 pring->stats.iocb_rsp_full++;
1442                 /* SET RxRE_RSP in Chip Att register */
1443                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1444                 writel(status, phba->CAregaddr);
1445                 readl(phba->CAregaddr); /* flush */
1446         }
1447         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1448                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1449                 pring->stats.iocb_cmd_empty++;
1450
1451                 /* Force update of the local copy of cmdGetInx */
1452                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1453                 lpfc_sli_resume_iocb(phba, pring);
1454
1455                 if ((pring->lpfc_sli_cmd_available))
1456                         (pring->lpfc_sli_cmd_available) (phba, pring);
1457
1458         }
1459
1460         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1461         return rc;
1462 }
1463
1464 int
1465 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1466 {
1467         struct lpfc_iocbq *iocb, *next_iocb;
1468         IOCB_t *icmd = NULL, *cmd = NULL;
1469         int errcnt;
1470
1471         errcnt = 0;
1472
1473         /* Error everything on txq and txcmplq
1474          * First do the txq.
1475          */
1476         spin_lock_irq(phba->host->host_lock);
1477         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
1478                 list_del_init(&iocb->list);
1479                 if (iocb->iocb_cmpl) {
1480                         icmd = &iocb->iocb;
1481                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1482                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1483                         spin_unlock_irq(phba->host->host_lock);
1484                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1485                         spin_lock_irq(phba->host->host_lock);
1486                 } else
1487                         lpfc_sli_release_iocbq(phba, iocb);
1488         }
1489         pring->txq_cnt = 0;
1490         INIT_LIST_HEAD(&(pring->txq));
1491
1492         /* Next issue ABTS for everything on the txcmplq */
1493         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1494                 cmd = &iocb->iocb;
1495
1496                 /*
1497                  * Imediate abort of IOCB, deque and call compl
1498                  */
1499
1500                 list_del_init(&iocb->list);
1501                 pring->txcmplq_cnt--;
1502
1503                 if (iocb->iocb_cmpl) {
1504                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1505                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1506                         spin_unlock_irq(phba->host->host_lock);
1507                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1508                         spin_lock_irq(phba->host->host_lock);
1509                 } else
1510                         lpfc_sli_release_iocbq(phba, iocb);
1511         }
1512
1513         INIT_LIST_HEAD(&pring->txcmplq);
1514         pring->txcmplq_cnt = 0;
1515         spin_unlock_irq(phba->host->host_lock);
1516
1517         return errcnt;
1518 }
1519
1520 int
1521 lpfc_sli_brdready(struct lpfc_hba * phba, uint32_t mask)
1522 {
1523         uint32_t status;
1524         int i = 0;
1525         int retval = 0;
1526
1527         /* Read the HBA Host Status Register */
1528         status = readl(phba->HSregaddr);
1529
1530         /*
1531          * Check status register every 100ms for 5 retries, then every
1532          * 500ms for 5, then every 2.5 sec for 5, then reset board and
1533          * every 2.5 sec for 4.
1534          * Break our of the loop if errors occurred during init.
1535          */
1536         while (((status & mask) != mask) &&
1537                !(status & HS_FFERM) &&
1538                i++ < 20) {
1539
1540                 if (i <= 5)
1541                         msleep(10);
1542                 else if (i <= 10)
1543                         msleep(500);
1544                 else
1545                         msleep(2500);
1546
1547                 if (i == 15) {
1548                         phba->hba_state = LPFC_STATE_UNKNOWN; /* Do post */
1549                         lpfc_sli_brdrestart(phba);
1550                 }
1551                 /* Read the HBA Host Status Register */
1552                 status = readl(phba->HSregaddr);
1553         }
1554
1555         /* Check to see if any errors occurred during init */
1556         if ((status & HS_FFERM) || (i >= 20)) {
1557                 phba->hba_state = LPFC_HBA_ERROR;
1558                 retval = 1;
1559         }
1560
1561         return retval;
1562 }
1563
1564 int
1565 lpfc_sli_brdkill(struct lpfc_hba * phba)
1566 {
1567         struct lpfc_sli *psli;
1568         LPFC_MBOXQ_t *pmb;
1569         uint32_t status;
1570         uint32_t ha_copy;
1571         int retval;
1572         int i = 0;
1573
1574         psli = &phba->sli;
1575
1576         /* Kill HBA */
1577         lpfc_printf_log(phba,
1578                 KERN_INFO,
1579                 LOG_SLI,
1580                 "%d:0329 Kill HBA Data: x%x x%x\n",
1581                 phba->brd_no,
1582                 phba->hba_state,
1583                 psli->sli_flag);
1584
1585         if ((pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1586                                                   GFP_ATOMIC)) == 0) {
1587                 return 1;
1588         }
1589
1590         /* Disable the error attention */
1591         spin_lock_irq(phba->host->host_lock);
1592         status = readl(phba->HCregaddr);
1593         status &= ~HC_ERINT_ENA;
1594         writel(status, phba->HCregaddr);
1595         readl(phba->HCregaddr); /* flush */
1596         spin_unlock_irq(phba->host->host_lock);
1597
1598         lpfc_kill_board(phba, pmb);
1599         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1600         retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1601
1602         if (retval != MBX_SUCCESS) {
1603                 if (retval != MBX_BUSY)
1604                         mempool_free(pmb, phba->mbox_mem_pool);
1605                 return 1;
1606         }
1607
1608         mempool_free(pmb, phba->mbox_mem_pool);
1609
1610         /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
1611          * attention every 100ms for 3 seconds. If we don't get ERATT after
1612          * 3 seconds we still set HBA_ERROR state because the status of the
1613          * board is now undefined.
1614          */
1615         ha_copy = readl(phba->HAregaddr);
1616
1617         while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
1618                 mdelay(100);
1619                 ha_copy = readl(phba->HAregaddr);
1620         }
1621
1622         del_timer_sync(&psli->mbox_tmo);
1623
1624         spin_lock_irq(phba->host->host_lock);
1625         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1626         spin_unlock_irq(phba->host->host_lock);
1627
1628         psli->mbox_active = NULL;
1629         lpfc_hba_down_post(phba);
1630         phba->hba_state = LPFC_HBA_ERROR;
1631
1632         return (ha_copy & HA_ERATT ? 0 : 1);
1633 }
1634
1635 int
1636 lpfc_sli_brdreset(struct lpfc_hba * phba)
1637 {
1638         struct lpfc_sli *psli;
1639         struct lpfc_sli_ring *pring;
1640         uint16_t cfg_value;
1641         int i;
1642
1643         psli = &phba->sli;
1644
1645         /* Reset HBA */
1646         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1647                         "%d:0325 Reset HBA Data: x%x x%x\n", phba->brd_no,
1648                         phba->hba_state, psli->sli_flag);
1649
1650         /* perform board reset */
1651         phba->fc_eventTag = 0;
1652         phba->fc_myDID = 0;
1653         phba->fc_prevDID = 0;
1654
1655         psli->sli_flag = 0;
1656
1657         /* Turn off parity checking and serr during the physical reset */
1658         pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
1659         pci_write_config_word(phba->pcidev, PCI_COMMAND,
1660                               (cfg_value &
1661                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
1662
1663         /* Now toggle INITFF bit in the Host Control Register */
1664         writel(HC_INITFF, phba->HCregaddr);
1665         mdelay(1);
1666         readl(phba->HCregaddr); /* flush */
1667         writel(0, phba->HCregaddr);
1668         readl(phba->HCregaddr); /* flush */
1669
1670         /* Restore PCI cmd register */
1671         pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
1672
1673         /* Initialize relevant SLI info */
1674         for (i = 0; i < psli->num_rings; i++) {
1675                 pring = &psli->ring[i];
1676                 pring->flag = 0;
1677                 pring->rspidx = 0;
1678                 pring->next_cmdidx  = 0;
1679                 pring->local_getidx = 0;
1680                 pring->cmdidx = 0;
1681                 pring->missbufcnt = 0;
1682         }
1683
1684         phba->hba_state = LPFC_WARM_START;
1685         return 0;
1686 }
1687
1688 int
1689 lpfc_sli_brdrestart(struct lpfc_hba * phba)
1690 {
1691         MAILBOX_t *mb;
1692         struct lpfc_sli *psli;
1693         uint16_t skip_post;
1694         volatile uint32_t word0;
1695         void __iomem *to_slim;
1696
1697         spin_lock_irq(phba->host->host_lock);
1698
1699         psli = &phba->sli;
1700
1701         /* Restart HBA */
1702         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1703                         "%d:0328 Restart HBA Data: x%x x%x\n", phba->brd_no,
1704                         phba->hba_state, psli->sli_flag);
1705
1706         word0 = 0;
1707         mb = (MAILBOX_t *) &word0;
1708         mb->mbxCommand = MBX_RESTART;
1709         mb->mbxHc = 1;
1710
1711         to_slim = phba->MBslimaddr;
1712         writel(*(uint32_t *) mb, to_slim);
1713         readl(to_slim); /* flush */
1714
1715         /* Only skip post after fc_ffinit is completed */
1716         if (phba->hba_state) {
1717                 skip_post = 1;
1718                 word0 = 1;      /* This is really setting up word1 */
1719         } else {
1720                 skip_post = 0;
1721                 word0 = 0;      /* This is really setting up word1 */
1722         }
1723         to_slim = (uint8_t *) phba->MBslimaddr + sizeof (uint32_t);
1724         writel(*(uint32_t *) mb, to_slim);
1725         readl(to_slim); /* flush */
1726
1727         lpfc_sli_brdreset(phba);
1728
1729         phba->hba_state = LPFC_INIT_START;
1730
1731         spin_unlock_irq(phba->host->host_lock);
1732
1733         if (skip_post)
1734                 mdelay(100);
1735         else
1736                 mdelay(2000);
1737
1738         lpfc_hba_down_post(phba);
1739
1740         return 0;
1741 }
1742
1743 static int
1744 lpfc_sli_chipset_init(struct lpfc_hba *phba)
1745 {
1746         uint32_t status, i = 0;
1747
1748         /* Read the HBA Host Status Register */
1749         status = readl(phba->HSregaddr);
1750
1751         /* Check status register to see what current state is */
1752         i = 0;
1753         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
1754
1755                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
1756                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
1757                  * 4.
1758                  */
1759                 if (i++ >= 20) {
1760                         /* Adapter failed to init, timeout, status reg
1761                            <status> */
1762                         lpfc_printf_log(phba,
1763                                         KERN_ERR,
1764                                         LOG_INIT,
1765                                         "%d:0436 Adapter failed to init, "
1766                                         "timeout, status reg x%x\n",
1767                                         phba->brd_no,
1768                                         status);
1769                         phba->hba_state = LPFC_HBA_ERROR;
1770                         return -ETIMEDOUT;
1771                 }
1772
1773                 /* Check to see if any errors occurred during init */
1774                 if (status & HS_FFERM) {
1775                         /* ERROR: During chipset initialization */
1776                         /* Adapter failed to init, chipset, status reg
1777                            <status> */
1778                         lpfc_printf_log(phba,
1779                                         KERN_ERR,
1780                                         LOG_INIT,
1781                                         "%d:0437 Adapter failed to init, "
1782                                         "chipset, status reg x%x\n",
1783                                         phba->brd_no,
1784                                         status);
1785                         phba->hba_state = LPFC_HBA_ERROR;
1786                         return -EIO;
1787                 }
1788
1789                 if (i <= 5) {
1790                         msleep(10);
1791                 } else if (i <= 10) {
1792                         msleep(500);
1793                 } else {
1794                         msleep(2500);
1795                 }
1796
1797                 if (i == 15) {
1798                         phba->hba_state = LPFC_STATE_UNKNOWN; /* Do post */
1799                         lpfc_sli_brdrestart(phba);
1800                 }
1801                 /* Read the HBA Host Status Register */
1802                 status = readl(phba->HSregaddr);
1803         }
1804
1805         /* Check to see if any errors occurred during init */
1806         if (status & HS_FFERM) {
1807                 /* ERROR: During chipset initialization */
1808                 /* Adapter failed to init, chipset, status reg <status> */
1809                 lpfc_printf_log(phba,
1810                                 KERN_ERR,
1811                                 LOG_INIT,
1812                                 "%d:0438 Adapter failed to init, chipset, "
1813                                 "status reg x%x\n",
1814                                 phba->brd_no,
1815                                 status);
1816                 phba->hba_state = LPFC_HBA_ERROR;
1817                 return -EIO;
1818         }
1819
1820         /* Clear all interrupt enable conditions */
1821         writel(0, phba->HCregaddr);
1822         readl(phba->HCregaddr); /* flush */
1823
1824         /* setup host attn register */
1825         writel(0xffffffff, phba->HAregaddr);
1826         readl(phba->HAregaddr); /* flush */
1827         return 0;
1828 }
1829
1830 int
1831 lpfc_sli_hba_setup(struct lpfc_hba * phba)
1832 {
1833         LPFC_MBOXQ_t *pmb;
1834         uint32_t resetcount = 0, rc = 0, done = 0;
1835
1836         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1837         if (!pmb) {
1838                 phba->hba_state = LPFC_HBA_ERROR;
1839                 return -ENOMEM;
1840         }
1841
1842         while (resetcount < 2 && !done) {
1843                 phba->hba_state = LPFC_STATE_UNKNOWN;
1844                 lpfc_sli_brdrestart(phba);
1845                 msleep(2500);
1846                 rc = lpfc_sli_chipset_init(phba);
1847                 if (rc)
1848                         break;
1849
1850                 resetcount++;
1851
1852         /* Call pre CONFIG_PORT mailbox command initialization.  A value of 0
1853          * means the call was successful.  Any other nonzero value is a failure,
1854          * but if ERESTART is returned, the driver may reset the HBA and try
1855          * again.
1856          */
1857                 rc = lpfc_config_port_prep(phba);
1858                 if (rc == -ERESTART) {
1859                         phba->hba_state = 0;
1860                         continue;
1861                 } else if (rc) {
1862                         break;
1863                 }
1864
1865                 phba->hba_state = LPFC_INIT_MBX_CMDS;
1866                 lpfc_config_port(phba, pmb);
1867                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
1868                 if (rc == MBX_SUCCESS)
1869                         done = 1;
1870                 else {
1871                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1872                                 "%d:0442 Adapter failed to init, mbxCmd x%x "
1873                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
1874                                 phba->brd_no, pmb->mb.mbxCommand,
1875                                 pmb->mb.mbxStatus, 0);
1876                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1877                 }
1878         }
1879         if (!done)
1880                 goto lpfc_sli_hba_setup_error;
1881
1882         rc = lpfc_sli_ring_map(phba, pmb);
1883
1884         if (rc)
1885                 goto lpfc_sli_hba_setup_error;
1886
1887         phba->sli.sli_flag |= LPFC_PROCESS_LA;
1888
1889         rc = lpfc_config_port_post(phba);
1890         if (rc)
1891                 goto lpfc_sli_hba_setup_error;
1892
1893         goto lpfc_sli_hba_setup_exit;
1894 lpfc_sli_hba_setup_error:
1895         phba->hba_state = LPFC_HBA_ERROR;
1896 lpfc_sli_hba_setup_exit:
1897         mempool_free(pmb, phba->mbox_mem_pool);
1898         return rc;
1899 }
1900
1901 static void
1902 lpfc_mbox_abort(struct lpfc_hba * phba)
1903 {
1904         LPFC_MBOXQ_t *pmbox;
1905         MAILBOX_t *mb;
1906
1907         if (phba->sli.mbox_active) {
1908                 del_timer_sync(&phba->sli.mbox_tmo);
1909                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1910                 pmbox = phba->sli.mbox_active;
1911                 mb = &pmbox->mb;
1912                 phba->sli.mbox_active = NULL;
1913                 if (pmbox->mbox_cmpl) {
1914                         mb->mbxStatus = MBX_NOT_FINISHED;
1915                         (pmbox->mbox_cmpl) (phba, pmbox);
1916                 }
1917                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1918         }
1919
1920         /* Abort all the non active mailbox commands. */
1921         spin_lock_irq(phba->host->host_lock);
1922         pmbox = lpfc_mbox_get(phba);
1923         while (pmbox) {
1924                 mb = &pmbox->mb;
1925                 if (pmbox->mbox_cmpl) {
1926                         mb->mbxStatus = MBX_NOT_FINISHED;
1927                         spin_unlock_irq(phba->host->host_lock);
1928                         (pmbox->mbox_cmpl) (phba, pmbox);
1929                         spin_lock_irq(phba->host->host_lock);
1930                 }
1931                 pmbox = lpfc_mbox_get(phba);
1932         }
1933         spin_unlock_irq(phba->host->host_lock);
1934         return;
1935 }
1936
1937 /*! lpfc_mbox_timeout
1938  *
1939  * \pre
1940  * \post
1941  * \param hba Pointer to per struct lpfc_hba structure
1942  * \param l1  Pointer to the driver's mailbox queue.
1943  * \return
1944  *   void
1945  *
1946  * \b Description:
1947  *
1948  * This routine handles mailbox timeout events at timer interrupt context.
1949  */
1950 void
1951 lpfc_mbox_timeout(unsigned long ptr)
1952 {
1953         struct lpfc_hba *phba;
1954         unsigned long iflag;
1955
1956         phba = (struct lpfc_hba *)ptr;
1957         spin_lock_irqsave(phba->host->host_lock, iflag);
1958         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1959                 phba->work_hba_events |= WORKER_MBOX_TMO;
1960                 if (phba->work_wait)
1961                         wake_up(phba->work_wait);
1962         }
1963         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1964 }
1965
1966 void
1967 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
1968 {
1969         LPFC_MBOXQ_t *pmbox;
1970         MAILBOX_t *mb;
1971
1972         spin_lock_irq(phba->host->host_lock);
1973         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1974                 spin_unlock_irq(phba->host->host_lock);
1975                 return;
1976         }
1977
1978         phba->work_hba_events &= ~WORKER_MBOX_TMO;
1979
1980         pmbox = phba->sli.mbox_active;
1981         mb = &pmbox->mb;
1982
1983         /* Mbox cmd <mbxCommand> timeout */
1984         lpfc_printf_log(phba,
1985                 KERN_ERR,
1986                 LOG_MBOX | LOG_SLI,
1987                 "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
1988                 phba->brd_no,
1989                 mb->mbxCommand,
1990                 phba->hba_state,
1991                 phba->sli.sli_flag,
1992                 phba->sli.mbox_active);
1993
1994         phba->sli.mbox_active = NULL;
1995         if (pmbox->mbox_cmpl) {
1996                 mb->mbxStatus = MBX_NOT_FINISHED;
1997                 spin_unlock_irq(phba->host->host_lock);
1998                 (pmbox->mbox_cmpl) (phba, pmbox);
1999                 spin_lock_irq(phba->host->host_lock);
2000         }
2001         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2002
2003         spin_unlock_irq(phba->host->host_lock);
2004         lpfc_mbox_abort(phba);
2005         return;
2006 }
2007
2008 int
2009 lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
2010 {
2011         MAILBOX_t *mb;
2012         struct lpfc_sli *psli;
2013         uint32_t status, evtctr;
2014         uint32_t ha_copy;
2015         int i;
2016         unsigned long drvr_flag = 0;
2017         volatile uint32_t word0, ldata;
2018         void __iomem *to_slim;
2019
2020         psli = &phba->sli;
2021
2022         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
2023
2024
2025         mb = &pmbox->mb;
2026         status = MBX_SUCCESS;
2027
2028         if (phba->hba_state == LPFC_HBA_ERROR) {
2029                 spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2030
2031                 /* Mbox command <mbxCommand> cannot issue */
2032                 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2033                 return (MBX_NOT_FINISHED);
2034         }
2035
2036         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
2037                 /* Polling for a mbox command when another one is already active
2038                  * is not allowed in SLI. Also, the driver must have established
2039                  * SLI2 mode to queue and process multiple mbox commands.
2040                  */
2041
2042                 if (flag & MBX_POLL) {
2043                         spin_unlock_irqrestore(phba->host->host_lock,
2044                                                drvr_flag);
2045
2046                         /* Mbox command <mbxCommand> cannot issue */
2047                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2048                         return (MBX_NOT_FINISHED);
2049                 }
2050
2051                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
2052                         spin_unlock_irqrestore(phba->host->host_lock,
2053                                                drvr_flag);
2054                         /* Mbox command <mbxCommand> cannot issue */
2055                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2056                         return (MBX_NOT_FINISHED);
2057                 }
2058
2059                 /* Handle STOP IOCB processing flag. This is only meaningful
2060                  * if we are not polling for mbox completion.
2061                  */
2062                 if (flag & MBX_STOP_IOCB) {
2063                         flag &= ~MBX_STOP_IOCB;
2064                         /* Now flag each ring */
2065                         for (i = 0; i < psli->num_rings; i++) {
2066                                 /* If the ring is active, flag it */
2067                                 if (psli->ring[i].cmdringaddr) {
2068                                         psli->ring[i].flag |=
2069                                             LPFC_STOP_IOCB_MBX;
2070                                 }
2071                         }
2072                 }
2073
2074                 /* Another mailbox command is still being processed, queue this
2075                  * command to be processed later.
2076                  */
2077                 lpfc_mbox_put(phba, pmbox);
2078
2079                 /* Mbox cmd issue - BUSY */
2080                 lpfc_printf_log(phba,
2081                         KERN_INFO,
2082                         LOG_MBOX | LOG_SLI,
2083                         "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
2084                         phba->brd_no,
2085                         mb->mbxCommand,
2086                         phba->hba_state,
2087                         psli->sli_flag,
2088                         flag);
2089
2090                 psli->slistat.mbox_busy++;
2091                 spin_unlock_irqrestore(phba->host->host_lock,
2092                                        drvr_flag);
2093
2094                 return (MBX_BUSY);
2095         }
2096
2097         /* Handle STOP IOCB processing flag. This is only meaningful
2098          * if we are not polling for mbox completion.
2099          */
2100         if (flag & MBX_STOP_IOCB) {
2101                 flag &= ~MBX_STOP_IOCB;
2102                 if (flag == MBX_NOWAIT) {
2103                         /* Now flag each ring */
2104                         for (i = 0; i < psli->num_rings; i++) {
2105                                 /* If the ring is active, flag it */
2106                                 if (psli->ring[i].cmdringaddr) {
2107                                         psli->ring[i].flag |=
2108                                             LPFC_STOP_IOCB_MBX;
2109                                 }
2110                         }
2111                 }
2112         }
2113
2114         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2115
2116         /* If we are not polling, we MUST be in SLI2 mode */
2117         if (flag != MBX_POLL) {
2118                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE) &&
2119                     (mb->mbxCommand != MBX_KILL_BOARD)) {
2120                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2121                         spin_unlock_irqrestore(phba->host->host_lock,
2122                                                drvr_flag);
2123                         /* Mbox command <mbxCommand> cannot issue */
2124                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
2125                         return (MBX_NOT_FINISHED);
2126                 }
2127                 /* timeout active mbox command */
2128                 mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO);
2129         }
2130
2131         /* Mailbox cmd <cmd> issue */
2132         lpfc_printf_log(phba,
2133                 KERN_INFO,
2134                 LOG_MBOX | LOG_SLI,
2135                 "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
2136                 phba->brd_no,
2137                 mb->mbxCommand,
2138                 phba->hba_state,
2139                 psli->sli_flag,
2140                 flag);
2141
2142         psli->slistat.mbox_cmd++;
2143         evtctr = psli->slistat.mbox_event;
2144
2145         /* next set own bit for the adapter and copy over command word */
2146         mb->mbxOwner = OWN_CHIP;
2147
2148         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2149                 /* First copy command data to host SLIM area */
2150                 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
2151         } else {
2152                 if (mb->mbxCommand == MBX_CONFIG_PORT ||
2153                     mb->mbxCommand == MBX_KILL_BOARD) {
2154                         /* copy command data into host mbox for cmpl */
2155                         lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
2156                                         MAILBOX_CMD_SIZE);
2157                 }
2158
2159                 /* First copy mbox command data to HBA SLIM, skip past first
2160                    word */
2161                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
2162                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
2163                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
2164
2165                 /* Next copy over first word, with mbxOwner set */
2166                 ldata = *((volatile uint32_t *)mb);
2167                 to_slim = phba->MBslimaddr;
2168                 writel(ldata, to_slim);
2169                 readl(to_slim); /* flush */
2170
2171                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2172                         /* switch over to host mailbox */
2173                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
2174                 }
2175         }
2176
2177         wmb();
2178         /* interrupt board to doit right away */
2179         writel(CA_MBATT, phba->CAregaddr);
2180         readl(phba->CAregaddr); /* flush */
2181
2182         switch (flag) {
2183         case MBX_NOWAIT:
2184                 /* Don't wait for it to finish, just return */
2185                 psli->mbox_active = pmbox;
2186                 break;
2187
2188         case MBX_POLL:
2189                 i = 0;
2190                 psli->mbox_active = NULL;
2191                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2192                         /* First read mbox status word */
2193                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
2194                         word0 = le32_to_cpu(word0);
2195                 } else {
2196                         /* First read mbox status word */
2197                         word0 = readl(phba->MBslimaddr);
2198                 }
2199
2200                 /* Read the HBA Host Attention Register */
2201                 ha_copy = readl(phba->HAregaddr);
2202
2203                 /* Wait for command to complete */
2204                 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
2205                        (!(ha_copy & HA_MBATT) &&
2206                         (phba->hba_state > LPFC_WARM_START))) {
2207                         if (i++ >= 100) {
2208                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2209                                 spin_unlock_irqrestore(phba->host->host_lock,
2210                                                        drvr_flag);
2211                                 return (MBX_NOT_FINISHED);
2212                         }
2213
2214                         /* Check if we took a mbox interrupt while we were
2215                            polling */
2216                         if (((word0 & OWN_CHIP) != OWN_CHIP)
2217                             && (evtctr != psli->slistat.mbox_event))
2218                                 break;
2219
2220                         spin_unlock_irqrestore(phba->host->host_lock,
2221                                                drvr_flag);
2222
2223                         /* Can be in interrupt context, do not sleep */
2224                         /* (or might be called with interrupts disabled) */
2225                         mdelay(i);
2226
2227                         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
2228
2229                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2230                                 /* First copy command data */
2231                                 word0 = *((volatile uint32_t *)
2232                                                 &phba->slim2p->mbx);
2233                                 word0 = le32_to_cpu(word0);
2234                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2235                                         MAILBOX_t *slimmb;
2236                                         volatile uint32_t slimword0;
2237                                         /* Check real SLIM for any errors */
2238                                         slimword0 = readl(phba->MBslimaddr);
2239                                         slimmb = (MAILBOX_t *) & slimword0;
2240                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
2241                                             && slimmb->mbxStatus) {
2242                                                 psli->sli_flag &=
2243                                                     ~LPFC_SLI2_ACTIVE;
2244                                                 word0 = slimword0;
2245                                         }
2246                                 }
2247                         } else {
2248                                 /* First copy command data */
2249                                 word0 = readl(phba->MBslimaddr);
2250                         }
2251                         /* Read the HBA Host Attention Register */
2252                         ha_copy = readl(phba->HAregaddr);
2253                 }
2254
2255                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2256                         /* copy results back to user */
2257                         lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
2258                                         MAILBOX_CMD_SIZE);
2259                 } else {
2260                         /* First copy command data */
2261                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2262                                                         MAILBOX_CMD_SIZE);
2263                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2264                                 pmbox->context2) {
2265                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
2266                                       phba->MBslimaddr + DMP_RSP_OFFSET,
2267                                                       mb->un.varDmp.word_cnt);
2268                         }
2269                 }
2270
2271                 writel(HA_MBATT, phba->HAregaddr);
2272                 readl(phba->HAregaddr); /* flush */
2273
2274                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2275                 status = mb->mbxStatus;
2276         }
2277
2278         spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2279         return (status);
2280 }
2281
2282 static int
2283 lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2284                     struct lpfc_iocbq * piocb)
2285 {
2286         /* Insert the caller's iocb in the txq tail for later processing. */
2287         list_add_tail(&piocb->list, &pring->txq);
2288         pring->txq_cnt++;
2289         return (0);
2290 }
2291
2292 static struct lpfc_iocbq *
2293 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2294                    struct lpfc_iocbq ** piocb)
2295 {
2296         struct lpfc_iocbq * nextiocb;
2297
2298         nextiocb = lpfc_sli_ringtx_get(phba, pring);
2299         if (!nextiocb) {
2300                 nextiocb = *piocb;
2301                 *piocb = NULL;
2302         }
2303
2304         return nextiocb;
2305 }
2306
2307 int
2308 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2309                     struct lpfc_iocbq *piocb, uint32_t flag)
2310 {
2311         struct lpfc_iocbq *nextiocb;
2312         IOCB_t *iocb;
2313
2314         /*
2315          * We should never get an IOCB if we are in a < LINK_DOWN state
2316          */
2317         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2318                 return IOCB_ERROR;
2319
2320         /*
2321          * Check to see if we are blocking IOCB processing because of a
2322          * outstanding mbox command.
2323          */
2324         if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
2325                 goto iocb_busy;
2326
2327         if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
2328                 /*
2329                  * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
2330                  * can be issued if the link is not up.
2331                  */
2332                 switch (piocb->iocb.ulpCommand) {
2333                 case CMD_QUE_RING_BUF_CN:
2334                 case CMD_QUE_RING_BUF64_CN:
2335                         /*
2336                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2337                          * completion, iocb_cmpl MUST be 0.
2338                          */
2339                         if (piocb->iocb_cmpl)
2340                                 piocb->iocb_cmpl = NULL;
2341                         /*FALLTHROUGH*/
2342                 case CMD_CREATE_XRI_CR:
2343                         break;
2344                 default:
2345                         goto iocb_busy;
2346                 }
2347
2348         /*
2349          * For FCP commands, we must be in a state where we can process link
2350          * attention events.
2351          */
2352         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2353                    !(phba->sli.sli_flag & LPFC_PROCESS_LA)))
2354                 goto iocb_busy;
2355
2356         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2357                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2358                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2359
2360         if (iocb)
2361                 lpfc_sli_update_ring(phba, pring);
2362         else
2363                 lpfc_sli_update_full_ring(phba, pring);
2364
2365         if (!piocb)
2366                 return IOCB_SUCCESS;
2367
2368         goto out_busy;
2369
2370  iocb_busy:
2371         pring->stats.iocb_cmd_delay++;
2372
2373  out_busy:
2374
2375         if (!(flag & SLI_IOCB_RET_IOCB)) {
2376                 lpfc_sli_ringtx_put(phba, pring, piocb);
2377                 return IOCB_SUCCESS;
2378         }
2379
2380         return IOCB_BUSY;
2381 }
2382
2383 static int
2384 lpfc_extra_ring_setup( struct lpfc_hba *phba)
2385 {
2386         struct lpfc_sli *psli;
2387         struct lpfc_sli_ring *pring;
2388
2389         psli = &phba->sli;
2390
2391         /* Adjust cmd/rsp ring iocb entries more evenly */
2392         pring = &psli->ring[psli->fcp_ring];
2393         pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2394         pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2395         pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2396         pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2397
2398         pring = &psli->ring[1];
2399         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2400         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2401         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2402         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2403
2404         /* Setup default profile for this ring */
2405         pring->iotag_max = 4096;
2406         pring->num_mask = 1;
2407         pring->prt[0].profile = 0;      /* Mask 0 */
2408         pring->prt[0].rctl = FC_UNSOL_DATA;
2409         pring->prt[0].type = 5;
2410         pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
2411         return 0;
2412 }
2413
2414 int
2415 lpfc_sli_setup(struct lpfc_hba *phba)
2416 {
2417         int i, totiocb = 0;
2418         struct lpfc_sli *psli = &phba->sli;
2419         struct lpfc_sli_ring *pring;
2420
2421         psli->num_rings = MAX_CONFIGURED_RINGS;
2422         psli->sli_flag = 0;
2423         psli->fcp_ring = LPFC_FCP_RING;
2424         psli->next_ring = LPFC_FCP_NEXT_RING;
2425         psli->ip_ring = LPFC_IP_RING;
2426
2427         psli->iocbq_lookup = NULL;
2428         psli->iocbq_lookup_len = 0;
2429         psli->last_iotag = 0;
2430
2431         for (i = 0; i < psli->num_rings; i++) {
2432                 pring = &psli->ring[i];
2433                 switch (i) {
2434                 case LPFC_FCP_RING:     /* ring 0 - FCP */
2435                         /* numCiocb and numRiocb are used in config_port */
2436                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
2437                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
2438                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2439                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2440                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2441                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2442                         pring->iotag_ctr = 0;
2443                         pring->iotag_max =
2444                             (phba->cfg_hba_queue_depth * 2);
2445                         pring->fast_iotag = pring->iotag_max;
2446                         pring->num_mask = 0;
2447                         break;
2448                 case LPFC_IP_RING:      /* ring 1 - IP */
2449                         /* numCiocb and numRiocb are used in config_port */
2450                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
2451                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
2452                         pring->num_mask = 0;
2453                         break;
2454                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
2455                         /* numCiocb and numRiocb are used in config_port */
2456                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
2457                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
2458                         pring->fast_iotag = 0;
2459                         pring->iotag_ctr = 0;
2460                         pring->iotag_max = 4096;
2461                         pring->num_mask = 4;
2462                         pring->prt[0].profile = 0;      /* Mask 0 */
2463                         pring->prt[0].rctl = FC_ELS_REQ;
2464                         pring->prt[0].type = FC_ELS_DATA;
2465                         pring->prt[0].lpfc_sli_rcv_unsol_event =
2466                             lpfc_els_unsol_event;
2467                         pring->prt[1].profile = 0;      /* Mask 1 */
2468                         pring->prt[1].rctl = FC_ELS_RSP;
2469                         pring->prt[1].type = FC_ELS_DATA;
2470                         pring->prt[1].lpfc_sli_rcv_unsol_event =
2471                             lpfc_els_unsol_event;
2472                         pring->prt[2].profile = 0;      /* Mask 2 */
2473                         /* NameServer Inquiry */
2474                         pring->prt[2].rctl = FC_UNSOL_CTL;
2475                         /* NameServer */
2476                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
2477                         pring->prt[2].lpfc_sli_rcv_unsol_event =
2478                             lpfc_ct_unsol_event;
2479                         pring->prt[3].profile = 0;      /* Mask 3 */
2480                         /* NameServer response */
2481                         pring->prt[3].rctl = FC_SOL_CTL;
2482                         /* NameServer */
2483                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
2484                         pring->prt[3].lpfc_sli_rcv_unsol_event =
2485                             lpfc_ct_unsol_event;
2486                         break;
2487                 }
2488                 totiocb += (pring->numCiocb + pring->numRiocb);
2489         }
2490         if (totiocb > MAX_SLI2_IOCB) {
2491                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
2492                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2493                                 "%d:0462 Too many cmd / rsp ring entries in "
2494                                 "SLI2 SLIM Data: x%x x%x\n",
2495                                 phba->brd_no, totiocb, MAX_SLI2_IOCB);
2496         }
2497         if (phba->cfg_multi_ring_support == 2)
2498                 lpfc_extra_ring_setup(phba);
2499
2500         return 0;
2501 }
2502
2503 int
2504 lpfc_sli_queue_setup(struct lpfc_hba * phba)
2505 {
2506         struct lpfc_sli *psli;
2507         struct lpfc_sli_ring *pring;
2508         int i;
2509
2510         psli = &phba->sli;
2511         spin_lock_irq(phba->host->host_lock);
2512         INIT_LIST_HEAD(&psli->mboxq);
2513         /* Initialize list headers for txq and txcmplq as double linked lists */
2514         for (i = 0; i < psli->num_rings; i++) {
2515                 pring = &psli->ring[i];
2516                 pring->ringno = i;
2517                 pring->next_cmdidx  = 0;
2518                 pring->local_getidx = 0;
2519                 pring->cmdidx = 0;
2520                 INIT_LIST_HEAD(&pring->txq);
2521                 INIT_LIST_HEAD(&pring->txcmplq);
2522                 INIT_LIST_HEAD(&pring->iocb_continueq);
2523                 INIT_LIST_HEAD(&pring->postbufq);
2524         }
2525         spin_unlock_irq(phba->host->host_lock);
2526         return (1);
2527 }
2528
2529 int
2530 lpfc_sli_hba_down(struct lpfc_hba * phba)
2531 {
2532         struct lpfc_sli *psli;
2533         struct lpfc_sli_ring *pring;
2534         LPFC_MBOXQ_t *pmb;
2535         struct lpfc_iocbq *iocb, *next_iocb;
2536         IOCB_t *icmd = NULL;
2537         int i;
2538         unsigned long flags = 0;
2539
2540         psli = &phba->sli;
2541         lpfc_hba_down_prep(phba);
2542
2543         spin_lock_irqsave(phba->host->host_lock, flags);
2544
2545         for (i = 0; i < psli->num_rings; i++) {
2546                 pring = &psli->ring[i];
2547                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
2548
2549                 /*
2550                  * Error everything on the txq since these iocbs have not been
2551                  * given to the FW yet.
2552                  */
2553                 pring->txq_cnt = 0;
2554
2555                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2556                         list_del_init(&iocb->list);
2557                         if (iocb->iocb_cmpl) {
2558                                 icmd = &iocb->iocb;
2559                                 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2560                                 icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
2561                                 spin_unlock_irqrestore(phba->host->host_lock,
2562                                                        flags);
2563                                 (iocb->iocb_cmpl) (phba, iocb, iocb);
2564                                 spin_lock_irqsave(phba->host->host_lock, flags);
2565                         } else
2566                                 lpfc_sli_release_iocbq(phba, iocb);
2567                 }
2568
2569                 INIT_LIST_HEAD(&(pring->txq));
2570
2571                 kfree(pring->fast_lookup);
2572                 pring->fast_lookup = NULL;
2573         }
2574
2575         spin_unlock_irqrestore(phba->host->host_lock, flags);
2576
2577         /* Return any active mbox cmds */
2578         del_timer_sync(&psli->mbox_tmo);
2579         spin_lock_irqsave(phba->host->host_lock, flags);
2580         phba->work_hba_events &= ~WORKER_MBOX_TMO;
2581         if (psli->mbox_active) {
2582                 pmb = psli->mbox_active;
2583                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2584                 if (pmb->mbox_cmpl) {
2585                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2586                         pmb->mbox_cmpl(phba,pmb);
2587                         spin_lock_irqsave(phba->host->host_lock, flags);
2588                 }
2589         }
2590         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2591         psli->mbox_active = NULL;
2592
2593         /* Return any pending mbox cmds */
2594         while ((pmb = lpfc_mbox_get(phba)) != NULL) {
2595                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2596                 if (pmb->mbox_cmpl) {
2597                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2598                         pmb->mbox_cmpl(phba,pmb);
2599                         spin_lock_irqsave(phba->host->host_lock, flags);
2600                 }
2601         }
2602
2603         INIT_LIST_HEAD(&psli->mboxq);
2604
2605         spin_unlock_irqrestore(phba->host->host_lock, flags);
2606
2607         return 1;
2608 }
2609
2610 void
2611 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
2612 {
2613         uint32_t *src = srcp;
2614         uint32_t *dest = destp;
2615         uint32_t ldata;
2616         int i;
2617
2618         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
2619                 ldata = *src;
2620                 ldata = le32_to_cpu(ldata);
2621                 *dest = ldata;
2622                 src++;
2623                 dest++;
2624         }
2625 }
2626
2627 int
2628 lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2629                          struct lpfc_dmabuf * mp)
2630 {
2631         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
2632            later */
2633         list_add_tail(&mp->list, &pring->postbufq);
2634
2635         pring->postbufq_cnt++;
2636         return 0;
2637 }
2638
2639
2640 struct lpfc_dmabuf *
2641 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2642                          dma_addr_t phys)
2643 {
2644         struct lpfc_dmabuf *mp, *next_mp;
2645         struct list_head *slp = &pring->postbufq;
2646
2647         /* Search postbufq, from the begining, looking for a match on phys */
2648         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
2649                 if (mp->phys == phys) {
2650                         list_del_init(&mp->list);
2651                         pring->postbufq_cnt--;
2652                         return mp;
2653                 }
2654         }
2655
2656         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2657                         "%d:0410 Cannot find virtual addr for mapped buf on "
2658                         "ring %d Data x%llx x%p x%p x%x\n",
2659                         phba->brd_no, pring->ringno, (unsigned long long)phys,
2660                         slp->next, slp->prev, pring->postbufq_cnt);
2661         return NULL;
2662 }
2663
2664 static void
2665 lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2666                            struct lpfc_iocbq * rspiocb)
2667 {
2668         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2669         /* Free the resources associated with the ELS_REQUEST64 IOCB the driver
2670          * just aborted.
2671          * In this case, context2  = cmd,  context2->next = rsp, context3 = bpl
2672          */
2673         if (cmdiocb->context2) {
2674                 buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;
2675
2676                 /* Free the response IOCB before completing the abort
2677                    command.  */
2678                 buf_ptr = NULL;
2679                 list_remove_head((&buf_ptr1->list), buf_ptr,
2680                                  struct lpfc_dmabuf, list);
2681                 if (buf_ptr) {
2682                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2683                         kfree(buf_ptr);
2684                 }
2685                 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2686                 kfree(buf_ptr1);
2687         }
2688
2689         if (cmdiocb->context3) {
2690                 buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
2691                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2692                 kfree(buf_ptr);
2693         }
2694
2695         lpfc_sli_release_iocbq(phba, cmdiocb);
2696         return;
2697 }
2698
2699 int
2700 lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
2701                              struct lpfc_sli_ring * pring,
2702                              struct lpfc_iocbq * cmdiocb)
2703 {
2704         struct lpfc_iocbq *abtsiocbp;
2705         IOCB_t *icmd = NULL;
2706         IOCB_t *iabt = NULL;
2707
2708         /* issue ABTS for this IOCB based on iotag */
2709         abtsiocbp = lpfc_sli_get_iocbq(phba);
2710         if (abtsiocbp == NULL)
2711                 return 0;
2712
2713         iabt = &abtsiocbp->iocb;
2714         icmd = &cmdiocb->iocb;
2715         switch (icmd->ulpCommand) {
2716         case CMD_ELS_REQUEST64_CR:
2717                 /* Even though we abort the ELS command, the firmware may access
2718                  * the BPL or other resources before it processes our
2719                  * ABORT_MXRI64. Thus we must delay reusing the cmdiocb
2720                  * resources till the actual abort request completes.
2721                  */
2722                 abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
2723                 abtsiocbp->context2 = cmdiocb->context2;
2724                 abtsiocbp->context3 = cmdiocb->context3;
2725                 cmdiocb->context2 = NULL;
2726                 cmdiocb->context3 = NULL;
2727                 abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
2728                 break;
2729         default:
2730                 lpfc_sli_release_iocbq(phba, abtsiocbp);
2731                 return 0;
2732         }
2733
2734         iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
2735         iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;
2736
2737         iabt->ulpLe = 1;
2738         iabt->ulpClass = CLASS3;
2739         iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
2740
2741         if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
2742                 lpfc_sli_release_iocbq(phba, abtsiocbp);
2743                 return 0;
2744         }
2745
2746         return 1;
2747 }
2748
2749 static int
2750 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, uint16_t tgt_id,
2751                            uint64_t lun_id, uint32_t ctx,
2752                            lpfc_ctx_cmd ctx_cmd)
2753 {
2754         struct lpfc_scsi_buf *lpfc_cmd;
2755         struct scsi_cmnd *cmnd;
2756         int rc = 1;
2757
2758         if (!(iocbq->iocb_flag &  LPFC_IO_FCP))
2759                 return rc;
2760
2761         lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
2762         cmnd = lpfc_cmd->pCmd;
2763
2764         if (cmnd == NULL)
2765                 return rc;
2766
2767         switch (ctx_cmd) {
2768         case LPFC_CTX_LUN:
2769                 if ((cmnd->device->id == tgt_id) &&
2770                     (cmnd->device->lun == lun_id))
2771                         rc = 0;
2772                 break;
2773         case LPFC_CTX_TGT:
2774                 if (cmnd->device->id == tgt_id)
2775                         rc = 0;
2776                 break;
2777         case LPFC_CTX_CTX:
2778                 if (iocbq->iocb.ulpContext == ctx)
2779                         rc = 0;
2780                 break;
2781         case LPFC_CTX_HOST:
2782                 rc = 0;
2783                 break;
2784         default:
2785                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
2786                         __FUNCTION__, ctx_cmd);
2787                 break;
2788         }
2789
2790         return rc;
2791 }
2792
2793 int
2794 lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2795                 uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
2796 {
2797         struct lpfc_iocbq *iocbq;
2798         int sum, i;
2799
2800         for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
2801                 iocbq = phba->sli.iocbq_lookup[i];
2802
2803                 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2804                                                 0, ctx_cmd) == 0)
2805                         sum++;
2806         }
2807
2808         return sum;
2809 }
2810
2811 void
2812 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2813                            struct lpfc_iocbq * rspiocb)
2814 {
2815         spin_lock_irq(phba->host->host_lock);
2816         lpfc_sli_release_iocbq(phba, cmdiocb);
2817         spin_unlock_irq(phba->host->host_lock);
2818         return;
2819 }
2820
2821 int
2822 lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2823                     uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
2824                     lpfc_ctx_cmd abort_cmd)
2825 {
2826         struct lpfc_iocbq *iocbq;
2827         struct lpfc_iocbq *abtsiocb;
2828         IOCB_t *cmd = NULL;
2829         int errcnt = 0, ret_val = 0;
2830         int i;
2831
2832         for (i = 1; i <= phba->sli.last_iotag; i++) {
2833                 iocbq = phba->sli.iocbq_lookup[i];
2834
2835                 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2836                                                 0, abort_cmd) != 0)
2837                         continue;
2838
2839                 /* issue ABTS for this IOCB based on iotag */
2840                 abtsiocb = lpfc_sli_get_iocbq(phba);
2841                 if (abtsiocb == NULL) {
2842                         errcnt++;
2843                         continue;
2844                 }
2845
2846                 cmd = &iocbq->iocb;
2847                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
2848                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
2849                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
2850                 abtsiocb->iocb.ulpLe = 1;
2851                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
2852
2853                 if (phba->hba_state >= LPFC_LINK_UP)
2854                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
2855                 else
2856                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
2857
2858                 /* Setup callback routine and issue the command. */
2859                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
2860                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
2861                 if (ret_val == IOCB_ERROR) {
2862                         lpfc_sli_release_iocbq(phba, abtsiocb);
2863                         errcnt++;
2864                         continue;
2865                 }
2866         }
2867
2868         return errcnt;
2869 }
2870
2871 static void
2872 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
2873                         struct lpfc_iocbq *cmdiocbq,
2874                         struct lpfc_iocbq *rspiocbq)
2875 {
2876         wait_queue_head_t *pdone_q;
2877         unsigned long iflags;
2878
2879         spin_lock_irqsave(phba->host->host_lock, iflags);
2880         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
2881         if (cmdiocbq->context2 && rspiocbq)
2882                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
2883                        &rspiocbq->iocb, sizeof(IOCB_t));
2884
2885         pdone_q = cmdiocbq->context_un.wait_queue;
2886         spin_unlock_irqrestore(phba->host->host_lock, iflags);
2887         if (pdone_q)
2888                 wake_up(pdone_q);
2889         return;
2890 }
2891
2892 /*
2893  * Issue the caller's iocb and wait for its completion, but no longer than the
2894  * caller's timeout.  Note that iocb_flags is cleared before the
2895  * lpfc_sli_issue_call since the wake routine sets a unique value and by
2896  * definition this is a wait function.
2897  */
2898 int
2899 lpfc_sli_issue_iocb_wait(struct lpfc_hba * phba,
2900                          struct lpfc_sli_ring * pring,
2901                          struct lpfc_iocbq * piocb,
2902                          struct lpfc_iocbq * prspiocbq,
2903                          uint32_t timeout)
2904 {
2905         DECLARE_WAIT_QUEUE_HEAD(done_q);
2906         long timeleft, timeout_req = 0;
2907         int retval = IOCB_SUCCESS;
2908         uint32_t creg_val;
2909
2910         /*
2911          * If the caller has provided a response iocbq buffer, then context2
2912          * is NULL or its an error.
2913          */
2914         if (prspiocbq) {
2915                 if (piocb->context2)
2916                         return IOCB_ERROR;
2917                 piocb->context2 = prspiocbq;
2918         }
2919
2920         piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
2921         piocb->context_un.wait_queue = &done_q;
2922         piocb->iocb_flag &= ~LPFC_IO_WAKE;
2923
2924         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
2925                 creg_val = readl(phba->HCregaddr);
2926                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
2927                 writel(creg_val, phba->HCregaddr);
2928                 readl(phba->HCregaddr); /* flush */
2929         }
2930
2931         retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
2932         if (retval == IOCB_SUCCESS) {
2933                 timeout_req = timeout * HZ;
2934                 spin_unlock_irq(phba->host->host_lock);
2935                 timeleft = wait_event_timeout(done_q,
2936                                 piocb->iocb_flag & LPFC_IO_WAKE,
2937                                 timeout_req);
2938                 spin_lock_irq(phba->host->host_lock);
2939
2940                 if (timeleft == 0) {
2941                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2942                                         "%d:0329 IOCB wait timeout error - no "
2943                                         "wake response Data x%x\n",
2944                                         phba->brd_no, timeout);
2945                         retval = IOCB_TIMEDOUT;
2946                 } else if (!(piocb->iocb_flag & LPFC_IO_WAKE)) {
2947                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2948                                         "%d:0330 IOCB wake NOT set, "
2949                                         "Data x%x x%lx\n", phba->brd_no,
2950                                         timeout, (timeleft / jiffies));
2951                         retval = IOCB_TIMEDOUT;
2952                 } else {
2953                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2954                                         "%d:0331 IOCB wake signaled\n",
2955                                         phba->brd_no);
2956                 }
2957         } else {
2958                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2959                                 "%d:0332 IOCB wait issue failed, Data x%x\n",
2960                                 phba->brd_no, retval);
2961                 retval = IOCB_ERROR;
2962         }
2963
2964         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
2965                 creg_val = readl(phba->HCregaddr);
2966                 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
2967                 writel(creg_val, phba->HCregaddr);
2968                 readl(phba->HCregaddr); /* flush */
2969         }
2970
2971         if (prspiocbq)
2972                 piocb->context2 = NULL;
2973
2974         piocb->context_un.wait_queue = NULL;
2975         piocb->iocb_cmpl = NULL;
2976         return retval;
2977 }
2978
2979 int
2980 lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
2981                          uint32_t timeout)
2982 {
2983         DECLARE_WAIT_QUEUE_HEAD(done_q);
2984         DECLARE_WAITQUEUE(wq_entry, current);
2985         uint32_t timeleft = 0;
2986         int retval;
2987
2988         /* The caller must leave context1 empty. */
2989         if (pmboxq->context1 != 0) {
2990                 return (MBX_NOT_FINISHED);
2991         }
2992
2993         /* setup wake call as IOCB callback */
2994         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
2995         /* setup context field to pass wait_queue pointer to wake function  */
2996         pmboxq->context1 = &done_q;
2997
2998         /* start to sleep before we wait, to avoid races */
2999         set_current_state(TASK_INTERRUPTIBLE);
3000         add_wait_queue(&done_q, &wq_entry);
3001
3002         /* now issue the command */
3003         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3004
3005         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
3006                 timeleft = schedule_timeout(timeout * HZ);
3007                 pmboxq->context1 = NULL;
3008                 /* if schedule_timeout returns 0, we timed out and were not
3009                    woken up */
3010                 if ((timeleft == 0) || signal_pending(current))
3011                         retval = MBX_TIMEOUT;
3012                 else
3013                         retval = MBX_SUCCESS;
3014         }
3015
3016
3017         set_current_state(TASK_RUNNING);
3018         remove_wait_queue(&done_q, &wq_entry);
3019         return retval;
3020 }
3021
3022 irqreturn_t
3023 lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
3024 {
3025         struct lpfc_hba *phba;
3026         uint32_t ha_copy;
3027         uint32_t work_ha_copy;
3028         unsigned long status;
3029         int i;
3030         uint32_t control;
3031
3032         /*
3033          * Get the driver's phba structure from the dev_id and
3034          * assume the HBA is not interrupting.
3035          */
3036         phba = (struct lpfc_hba *) dev_id;
3037
3038         if (unlikely(!phba))
3039                 return IRQ_NONE;
3040
3041         phba->sli.slistat.sli_intr++;
3042
3043         /*
3044          * Call the HBA to see if it is interrupting.  If not, don't claim
3045          * the interrupt
3046          */
3047
3048         /* Ignore all interrupts during initialization. */
3049         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
3050                 return IRQ_NONE;
3051
3052         /*
3053          * Read host attention register to determine interrupt source
3054          * Clear Attention Sources, except Error Attention (to
3055          * preserve status) and Link Attention
3056          */
3057         spin_lock(phba->host->host_lock);
3058         ha_copy = readl(phba->HAregaddr);
3059         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
3060         readl(phba->HAregaddr); /* flush */
3061         spin_unlock(phba->host->host_lock);
3062
3063         if (unlikely(!ha_copy))
3064                 return IRQ_NONE;
3065
3066         work_ha_copy = ha_copy & phba->work_ha_mask;
3067
3068         if (unlikely(work_ha_copy)) {
3069                 if (work_ha_copy & HA_LATT) {
3070                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
3071                                 /*
3072                                  * Turn off Link Attention interrupts
3073                                  * until CLEAR_LA done
3074                                  */
3075                                 spin_lock(phba->host->host_lock);
3076                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
3077                                 control = readl(phba->HCregaddr);
3078                                 control &= ~HC_LAINT_ENA;
3079                                 writel(control, phba->HCregaddr);
3080                                 readl(phba->HCregaddr); /* flush */
3081                                 spin_unlock(phba->host->host_lock);
3082                         }
3083                         else
3084                                 work_ha_copy &= ~HA_LATT;
3085                 }
3086
3087                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
3088                         for (i = 0; i < phba->sli.num_rings; i++) {
3089                                 if (work_ha_copy & (HA_RXATT << (4*i))) {
3090                                         /*
3091                                          * Turn off Slow Rings interrupts
3092                                          */
3093                                         spin_lock(phba->host->host_lock);
3094                                         control = readl(phba->HCregaddr);
3095                                         control &= ~(HC_R0INT_ENA << i);
3096                                         writel(control, phba->HCregaddr);
3097                                         readl(phba->HCregaddr); /* flush */
3098                                         spin_unlock(phba->host->host_lock);
3099                                 }
3100                         }
3101                 }
3102
3103                 if (work_ha_copy & HA_ERATT) {
3104                         phba->hba_state = LPFC_HBA_ERROR;
3105                         /*
3106                          * There was a link/board error.  Read the
3107                          * status register to retrieve the error event
3108                          * and process it.
3109                          */
3110                         phba->sli.slistat.err_attn_event++;
3111                         /* Save status info */
3112                         phba->work_hs = readl(phba->HSregaddr);
3113                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
3114                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
3115
3116                         /* Clear Chip error bit */
3117                         writel(HA_ERATT, phba->HAregaddr);
3118                         readl(phba->HAregaddr); /* flush */
3119                 }
3120
3121                 spin_lock(phba->host->host_lock);
3122                 phba->work_ha |= work_ha_copy;
3123                 if (phba->work_wait)
3124                         wake_up(phba->work_wait);
3125                 spin_unlock(phba->host->host_lock);
3126         }
3127
3128         ha_copy &= ~(phba->work_ha_mask);
3129
3130         /*
3131          * Process all events on FCP ring.  Take the optimized path for
3132          * FCP IO.  Any other IO is slow path and is handled by
3133          * the worker thread.
3134          */
3135         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
3136         status >>= (4*LPFC_FCP_RING);
3137         if (status & HA_RXATT)
3138                 lpfc_sli_handle_fast_ring_event(phba,
3139                                                 &phba->sli.ring[LPFC_FCP_RING],
3140                                                 status);
3141         return IRQ_HANDLED;
3142
3143 } /* lpfc_intr_handler */