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lpfc_sli.c

/*******************************************************************
 * This file is part of the Emulex Linux Device Driver for         *
 * Fibre Channel Host Bus Adapters.                                *
 * Copyright (C) 2004-2006 Emulex.  All rights reserved.           *
 * EMULEX and SLI are trademarks of Emulex.                        *
 * www.emulex.com                                                  *
 * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
 *                                                                 *
 * This program is free software; you can redistribute it and/or   *
 * modify it under the terms of version 2 of the GNU General       *
 * Public License as published by the Free Software Foundation.    *
 * This program is distributed in the hope that it will be useful. *
 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
 * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
 * more details, a copy of which can be found in the file COPYING  *
 * included with this package.                                     *
 *******************************************************************/

#include <linux/blkdev.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/delay.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>

#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_crtn.h"
#include "lpfc_logmsg.h"
#include "lpfc_compat.h"

/*
 * Define macro to log: Mailbox command x%x cannot issue Data
 * This allows multiple uses of lpfc_msgBlk0311
 * w/o perturbing log msg utility.
 */
#define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \
                  lpfc_printf_log(phba, \
                        KERN_INFO, \
                        LOG_MBOX | LOG_SLI, \
                        "%d:0311 Mailbox command x%x cannot issue " \
                        "Data: x%x x%x x%x\n", \
                        phba->brd_no, \
                        mb->mbxCommand,         \
                        phba->hba_state,  \
                        psli->sli_flag,   \
                        flag);


/* There are only four IOCB completion types. */
typedef enum _lpfc_iocb_type {
      LPFC_UNKNOWN_IOCB,
      LPFC_UNSOL_IOCB,
      LPFC_SOL_IOCB,
      LPFC_ABORT_IOCB
} lpfc_iocb_type;

struct lpfc_iocbq *
lpfc_sli_get_iocbq(struct lpfc_hba * phba)
{
      struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
      struct lpfc_iocbq * iocbq = NULL;

      list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
      return iocbq;
}

void
lpfc_sli_release_iocbq(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
{
      size_t start_clean = (size_t)(&((struct lpfc_iocbq *)NULL)->iocb);

      /*
       * Clean all volatile data fields, preserve iotag and node struct.
       */
      memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
      list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
}

/*
 * Translate the iocb command to an iocb command type used to decide the final
 * disposition of each completed IOCB.
 */
static lpfc_iocb_type
lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
{
      lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;

      if (iocb_cmnd > CMD_MAX_IOCB_CMD)
            return 0;

      switch (iocb_cmnd) {
      case CMD_XMIT_SEQUENCE_CR:
      case CMD_XMIT_SEQUENCE_CX:
      case CMD_XMIT_BCAST_CN:
      case CMD_XMIT_BCAST_CX:
      case CMD_ELS_REQUEST_CR:
      case CMD_ELS_REQUEST_CX:
      case CMD_CREATE_XRI_CR:
      case CMD_CREATE_XRI_CX:
      case CMD_GET_RPI_CN:
      case CMD_XMIT_ELS_RSP_CX:
      case CMD_GET_RPI_CR:
      case CMD_FCP_IWRITE_CR:
      case CMD_FCP_IWRITE_CX:
      case CMD_FCP_IREAD_CR:
      case CMD_FCP_IREAD_CX:
      case CMD_FCP_ICMND_CR:
      case CMD_FCP_ICMND_CX:
      case CMD_ADAPTER_MSG:
      case CMD_ADAPTER_DUMP:
      case CMD_XMIT_SEQUENCE64_CR:
      case CMD_XMIT_SEQUENCE64_CX:
      case CMD_XMIT_BCAST64_CN:
      case CMD_XMIT_BCAST64_CX:
      case CMD_ELS_REQUEST64_CR:
      case CMD_ELS_REQUEST64_CX:
      case CMD_FCP_IWRITE64_CR:
      case CMD_FCP_IWRITE64_CX:
      case CMD_FCP_IREAD64_CR:
      case CMD_FCP_IREAD64_CX:
      case CMD_FCP_ICMND64_CR:
      case CMD_FCP_ICMND64_CX:
      case CMD_GEN_REQUEST64_CR:
      case CMD_GEN_REQUEST64_CX:
      case CMD_XMIT_ELS_RSP64_CX:
            type = LPFC_SOL_IOCB;
            break;
      case CMD_ABORT_XRI_CN:
      case CMD_ABORT_XRI_CX:
      case CMD_CLOSE_XRI_CN:
      case CMD_CLOSE_XRI_CX:
      case CMD_XRI_ABORTED_CX:
      case CMD_ABORT_MXRI64_CN:
            type = LPFC_ABORT_IOCB;
            break;
      case CMD_RCV_SEQUENCE_CX:
      case CMD_RCV_ELS_REQ_CX:
      case CMD_RCV_SEQUENCE64_CX:
      case CMD_RCV_ELS_REQ64_CX:
            type = LPFC_UNSOL_IOCB;
            break;
      default:
            type = LPFC_UNKNOWN_IOCB;
            break;
      }

      return type;
}

static int
lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb)
{
      struct lpfc_sli *psli = &phba->sli;
      MAILBOX_t *pmbox = &pmb->mb;
      int i, rc;

      for (i = 0; i < psli->num_rings; i++) {
            phba->hba_state = LPFC_INIT_MBX_CMDS;
            lpfc_config_ring(phba, i, pmb);
            rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
            if (rc != MBX_SUCCESS) {
                  lpfc_printf_log(phba,
                              KERN_ERR,
                              LOG_INIT,
                              "%d:0446 Adapter failed to init, "
                              "mbxCmd x%x CFG_RING, mbxStatus x%x, "
                              "ring %d\n",
                              phba->brd_no,
                              pmbox->mbxCommand,
                              pmbox->mbxStatus,
                              i);
                  phba->hba_state = LPFC_HBA_ERROR;
                  return -ENXIO;
            }
      }
      return 0;
}

static int
lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba,
                  struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb)
{
      list_add_tail(&piocb->list, &pring->txcmplq);
      pring->txcmplq_cnt++;
      if (unlikely(pring->ringno == LPFC_ELS_RING))
            mod_timer(&phba->els_tmofunc,
                              jiffies + HZ * (phba->fc_ratov << 1));

      return (0);
}

static struct lpfc_iocbq *
lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
{
      struct list_head *dlp;
      struct lpfc_iocbq *cmd_iocb;

      dlp = &pring->txq;
      cmd_iocb = NULL;
      list_remove_head((&pring->txq), cmd_iocb,
                   struct lpfc_iocbq,
                   list);
      if (cmd_iocb) {
            /* If the first ptr is not equal to the list header,
             * deque the IOCBQ_t and return it.
             */
            pring->txq_cnt--;
      }
      return (cmd_iocb);
}

static IOCB_t *
lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
      struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
      uint32_t  max_cmd_idx = pring->numCiocb;
      IOCB_t *iocb = NULL;

      if ((pring->next_cmdidx == pring->cmdidx) &&
         (++pring->next_cmdidx >= max_cmd_idx))
            pring->next_cmdidx = 0;

      if (unlikely(pring->local_getidx == pring->next_cmdidx)) {

            pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);

            if (unlikely(pring->local_getidx >= max_cmd_idx)) {
                  lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                              "%d:0315 Ring %d issue: portCmdGet %d "
                              "is bigger then cmd ring %d\n",
                              phba->brd_no, pring->ringno,
                              pring->local_getidx, max_cmd_idx);

                  phba->hba_state = LPFC_HBA_ERROR;
                  /*
                   * All error attention handlers are posted to
                   * worker thread
                   */
                  phba->work_ha |= HA_ERATT;
                  phba->work_hs = HS_FFER3;
                  if (phba->work_wait)
                        wake_up(phba->work_wait);

                  return NULL;
            }

            if (pring->local_getidx == pring->next_cmdidx)
                  return NULL;
      }

      iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx);

      return iocb;
}

uint16_t
lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
{
      struct lpfc_iocbq ** new_arr;
      struct lpfc_iocbq ** old_arr;
      size_t new_len;
      struct lpfc_sli *psli = &phba->sli;
      uint16_t iotag;

      spin_lock_irq(phba->host->host_lock);
      iotag = psli->last_iotag;
      if(++iotag < psli->iocbq_lookup_len) {
            psli->last_iotag = iotag;
            psli->iocbq_lookup[iotag] = iocbq;
            spin_unlock_irq(phba->host->host_lock);
            iocbq->iotag = iotag;
            return iotag;
      }
      else if (psli->iocbq_lookup_len < (0xffff
                                 - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
            new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
            spin_unlock_irq(phba->host->host_lock);
            new_arr = kmalloc(new_len * sizeof (struct lpfc_iocbq *),
                          GFP_KERNEL);
            if (new_arr) {
                  memset((char *)new_arr, 0,
                         new_len * sizeof (struct lpfc_iocbq *));
                  spin_lock_irq(phba->host->host_lock);
                  old_arr = psli->iocbq_lookup;
                  if (new_len <= psli->iocbq_lookup_len) {
                        /* highly unprobable case */
                        kfree(new_arr);
                        iotag = psli->last_iotag;
                        if(++iotag < psli->iocbq_lookup_len) {
                              psli->last_iotag = iotag;
                              psli->iocbq_lookup[iotag] = iocbq;
                              spin_unlock_irq(phba->host->host_lock);
                              iocbq->iotag = iotag;
                              return iotag;
                        }
                        spin_unlock_irq(phba->host->host_lock);
                        return 0;
                  }
                  if (psli->iocbq_lookup)
                        memcpy(new_arr, old_arr,
                               ((psli->last_iotag  + 1) *
                              sizeof (struct lpfc_iocbq *)));
                  psli->iocbq_lookup = new_arr;
                  psli->iocbq_lookup_len = new_len;
                  psli->last_iotag = iotag;
                  psli->iocbq_lookup[iotag] = iocbq;
                  spin_unlock_irq(phba->host->host_lock);
                  iocbq->iotag = iotag;
                  kfree(old_arr);
                  return iotag;
            }
      } else
            spin_unlock_irq(phba->host->host_lock);

      lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
                  "%d:0318 Failed to allocate IOTAG.last IOTAG is %d\n",
                  phba->brd_no, psli->last_iotag);

      return 0;
}

static void
lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
            IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
{
      /*
       * Set up an iotag
       */
      nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;

      /*
       * Issue iocb command to adapter
       */
      lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t));
      wmb();
      pring->stats.iocb_cmd++;

      /*
       * If there is no completion routine to call, we can release the
       * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
       * that have no rsp ring completion, iocb_cmpl MUST be NULL.
       */
      if (nextiocb->iocb_cmpl)
            lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
      else
            lpfc_sli_release_iocbq(phba, nextiocb);

      /*
       * Let the HBA know what IOCB slot will be the next one the
       * driver will put a command into.
       */
      pring->cmdidx = pring->next_cmdidx;
      writel(pring->cmdidx, phba->MBslimaddr
             + (SLIMOFF + (pring->ringno * 2)) * 4);
}

static void
lpfc_sli_update_full_ring(struct lpfc_hba * phba,
                    struct lpfc_sli_ring *pring)
{
      int ringno = pring->ringno;

      pring->flag |= LPFC_CALL_RING_AVAILABLE;

      wmb();

      /*
       * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
       * The HBA will tell us when an IOCB entry is available.
       */
      writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
      readl(phba->CAregaddr); /* flush */

      pring->stats.iocb_cmd_full++;
}

static void
lpfc_sli_update_ring(struct lpfc_hba * phba,
                 struct lpfc_sli_ring *pring)
{
      int ringno = pring->ringno;

      /*
       * Tell the HBA that there is work to do in this ring.
       */
      wmb();
      writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
      readl(phba->CAregaddr); /* flush */
}

static void
lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
{
      IOCB_t *iocb;
      struct lpfc_iocbq *nextiocb;

      /*
       * Check to see if:
       *  (a) there is anything on the txq to send
       *  (b) link is up
       *  (c) link attention events can be processed (fcp ring only)
       *  (d) IOCB processing is not blocked by the outstanding mbox command.
       */
      if (pring->txq_cnt &&
          (phba->hba_state > LPFC_LINK_DOWN) &&
          (pring->ringno != phba->sli.fcp_ring ||
           phba->sli.sli_flag & LPFC_PROCESS_LA) &&
          !(pring->flag & LPFC_STOP_IOCB_MBX)) {

            while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
                   (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
                  lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);

            if (iocb)
                  lpfc_sli_update_ring(phba, pring);
            else
                  lpfc_sli_update_full_ring(phba, pring);
      }

      return;
}

/* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
static void
lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
{
      struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno];

      /* If the ring is active, flag it */
      if (phba->sli.ring[ringno].cmdringaddr) {
            if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
                  phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
                  /*
                   * Force update of the local copy of cmdGetInx
                   */
                  phba->sli.ring[ringno].local_getidx
                        = le32_to_cpu(pgp->cmdGetInx);
                  spin_lock_irq(phba->host->host_lock);
                  lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
                  spin_unlock_irq(phba->host->host_lock);
            }
      }
}

static int
lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
{
      uint8_t ret;

      switch (mbxCommand) {
      case MBX_LOAD_SM:
      case MBX_READ_NV:
      case MBX_WRITE_NV:
      case MBX_RUN_BIU_DIAG:
      case MBX_INIT_LINK:
      case MBX_DOWN_LINK:
      case MBX_CONFIG_LINK:
      case MBX_CONFIG_RING:
      case MBX_RESET_RING:
      case MBX_READ_CONFIG:
      case MBX_READ_RCONFIG:
      case MBX_READ_SPARM:
      case MBX_READ_STATUS:
      case MBX_READ_RPI:
      case MBX_READ_XRI:
      case MBX_READ_REV:
      case MBX_READ_LNK_STAT:
      case MBX_REG_LOGIN:
      case MBX_UNREG_LOGIN:
      case MBX_READ_LA:
      case MBX_CLEAR_LA:
      case MBX_DUMP_MEMORY:
      case MBX_DUMP_CONTEXT:
      case MBX_RUN_DIAGS:
      case MBX_RESTART:
      case MBX_UPDATE_CFG:
      case MBX_DOWN_LOAD:
      case MBX_DEL_LD_ENTRY:
      case MBX_RUN_PROGRAM:
      case MBX_SET_MASK:
      case MBX_SET_SLIM:
      case MBX_UNREG_D_ID:
      case MBX_KILL_BOARD:
      case MBX_CONFIG_FARP:
      case MBX_BEACON:
      case MBX_LOAD_AREA:
      case MBX_RUN_BIU_DIAG64:
      case MBX_CONFIG_PORT:
      case MBX_READ_SPARM64:
      case MBX_READ_RPI64:
      case MBX_REG_LOGIN64:
      case MBX_READ_LA64:
      case MBX_FLASH_WR_ULA:
      case MBX_SET_DEBUG:
      case MBX_LOAD_EXP_ROM:
            ret = mbxCommand;
            break;
      default:
            ret = MBX_SHUTDOWN;
            break;
      }
      return (ret);
}
static void
lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
{
      wait_queue_head_t *pdone_q;

      /*
       * If pdone_q is empty, the driver thread gave up waiting and
       * continued running.
       */
      pdone_q = (wait_queue_head_t *) pmboxq->context1;
      if (pdone_q)
            wake_up_interruptible(pdone_q);
      return;
}

void
lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
{
      struct lpfc_dmabuf *mp;
      mp = (struct lpfc_dmabuf *) (pmb->context1);
      if (mp) {
            lpfc_mbuf_free(phba, mp->virt, mp->phys);
            kfree(mp);
      }
      mempool_free( pmb, phba->mbox_mem_pool);
      return;
}

int
lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
{
      MAILBOX_t *mbox;
      MAILBOX_t *pmbox;
      LPFC_MBOXQ_t *pmb;
      struct lpfc_sli *psli;
      int i, rc;
      uint32_t process_next;

      psli = &phba->sli;
      /* We should only get here if we are in SLI2 mode */
      if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
            return (1);
      }

      phba->sli.slistat.mbox_event++;

      /* Get a Mailbox buffer to setup mailbox commands for callback */
      if ((pmb = phba->sli.mbox_active)) {
            pmbox = &pmb->mb;
            mbox = &phba->slim2p->mbx;

            /* First check out the status word */
            lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));

            /* Sanity check to ensure the host owns the mailbox */
            if (pmbox->mbxOwner != OWN_HOST) {
                  /* Lets try for a while */
                  for (i = 0; i < 10240; i++) {
                        /* First copy command data */
                        lpfc_sli_pcimem_bcopy(mbox, pmbox,
                                          sizeof (uint32_t));
                        if (pmbox->mbxOwner == OWN_HOST)
                              goto mbout;
                  }
                  /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
                     <status> */
                  lpfc_printf_log(phba,
                              KERN_WARNING,
                              LOG_MBOX | LOG_SLI,
                              "%d:0304 Stray Mailbox Interrupt "
                              "mbxCommand x%x mbxStatus x%x\n",
                              phba->brd_no,
                              pmbox->mbxCommand,
                              pmbox->mbxStatus);

                  spin_lock_irq(phba->host->host_lock);
                  phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
                  spin_unlock_irq(phba->host->host_lock);
                  return (1);
            }

            mbout:
            del_timer_sync(&phba->sli.mbox_tmo);
            phba->work_hba_events &= ~WORKER_MBOX_TMO;

            /*
             * It is a fatal error if unknown mbox command completion.
             */
            if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
                MBX_SHUTDOWN) {

                  /* Unknow mailbox command compl */
                  lpfc_printf_log(phba,
                        KERN_ERR,
                        LOG_MBOX | LOG_SLI,
                        "%d:0323 Unknown Mailbox command %x Cmpl\n",
                        phba->brd_no,
                        pmbox->mbxCommand);
                  phba->hba_state = LPFC_HBA_ERROR;
                  phba->work_hs = HS_FFER3;
                  lpfc_handle_eratt(phba);
                  return (0);
            }

            phba->sli.mbox_active = NULL;
            if (pmbox->mbxStatus) {
                  phba->sli.slistat.mbox_stat_err++;
                  if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
                        /* Mbox cmd cmpl error - RETRYing */
                        lpfc_printf_log(phba,
                              KERN_INFO,
                              LOG_MBOX | LOG_SLI,
                              "%d:0305 Mbox cmd cmpl error - "
                              "RETRYing Data: x%x x%x x%x x%x\n",
                              phba->brd_no,
                              pmbox->mbxCommand,
                              pmbox->mbxStatus,
                              pmbox->un.varWords[0],
                              phba->hba_state);
                        pmbox->mbxStatus = 0;
                        pmbox->mbxOwner = OWN_HOST;
                        spin_lock_irq(phba->host->host_lock);
                        phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
                        spin_unlock_irq(phba->host->host_lock);
                        rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
                        if (rc == MBX_SUCCESS)
                              return (0);
                  }
            }

            /* Mailbox cmd <cmd> Cmpl <cmpl> */
            lpfc_printf_log(phba,
                        KERN_INFO,
                        LOG_MBOX | LOG_SLI,
                        "%d:0307 Mailbox cmd x%x Cmpl x%p "
                        "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
                        phba->brd_no,
                        pmbox->mbxCommand,
                        pmb->mbox_cmpl,
                        *((uint32_t *) pmbox),
                        pmbox->un.varWords[0],
                        pmbox->un.varWords[1],
                        pmbox->un.varWords[2],
                        pmbox->un.varWords[3],
                        pmbox->un.varWords[4],
                        pmbox->un.varWords[5],
                        pmbox->un.varWords[6],
                        pmbox->un.varWords[7]);

            if (pmb->mbox_cmpl) {
                  lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
                  pmb->mbox_cmpl(phba,pmb);
            }
      }


      do {
            process_next = 0; /* by default don't loop */
            spin_lock_irq(phba->host->host_lock);
            phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;

            /* Process next mailbox command if there is one */
            if ((pmb = lpfc_mbox_get(phba))) {
                  spin_unlock_irq(phba->host->host_lock);
                  rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
                  if (rc == MBX_NOT_FINISHED) {
                        pmb->mb.mbxStatus = MBX_NOT_FINISHED;
                        pmb->mbox_cmpl(phba,pmb);
                        process_next = 1;
                        continue;   /* loop back */
                  }
            } else {
                  spin_unlock_irq(phba->host->host_lock);
                  /* Turn on IOCB processing */
                  for (i = 0; i < phba->sli.num_rings; i++) {
                        lpfc_sli_turn_on_ring(phba, i);
                  }

                  /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
                  while (!list_empty(&phba->freebufList)) {
                        struct lpfc_dmabuf *mp;

                        mp = NULL;
                        list_remove_head((&phba->freebufList),
                                     mp,
                                     struct lpfc_dmabuf,
                                     list);
                        if (mp) {
                              lpfc_mbuf_free(phba, mp->virt,
                                           mp->phys);
                              kfree(mp);
                        }
                  }
            }

      } while (process_next);

      return (0);
}
static int
lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                      struct lpfc_iocbq *saveq)
{
      IOCB_t           * irsp;
      WORD5            * w5p;
      uint32_t           Rctl, Type;
      uint32_t           match, i;

      match = 0;
      irsp = &(saveq->iocb);
      if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
          || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
            Rctl = FC_ELS_REQ;
            Type = FC_ELS_DATA;
      } else {
            w5p =
                (WORD5 *) & (saveq->iocb.un.
                         ulpWord[5]);
            Rctl = w5p->hcsw.Rctl;
            Type = w5p->hcsw.Type;

            /* Firmware Workaround */
            if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
                  (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
                  Rctl = FC_ELS_REQ;
                  Type = FC_ELS_DATA;
                  w5p->hcsw.Rctl = Rctl;
                  w5p->hcsw.Type = Type;
            }
      }
      /* unSolicited Responses */
      if (pring->prt[0].profile) {
            if (pring->prt[0].lpfc_sli_rcv_unsol_event)
                  (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
                                                      saveq);
            match = 1;
      } else {
            /* We must search, based on rctl / type
               for the right routine */
            for (i = 0; i < pring->num_mask;
                 i++) {
                  if ((pring->prt[i].rctl ==
                       Rctl)
                      && (pring->prt[i].
                        type == Type)) {
                        if (pring->prt[i].lpfc_sli_rcv_unsol_event)
                              (pring->prt[i].lpfc_sli_rcv_unsol_event)
                                          (phba, pring, saveq);
                        match = 1;
                        break;
                  }
            }
      }
      if (match == 0) {
            /* Unexpected Rctl / Type received */
            /* Ring <ringno> handler: unexpected
               Rctl <Rctl> Type <Type> received */
            lpfc_printf_log(phba,
                        KERN_WARNING,
                        LOG_SLI,
                        "%d:0313 Ring %d handler: unexpected Rctl x%x "
                        "Type x%x received \n",
                        phba->brd_no,
                        pring->ringno,
                        Rctl,
                        Type);
      }
      return(1);
}

static struct lpfc_iocbq *
lpfc_sli_iocbq_lookup(struct lpfc_hba * phba,
                  struct lpfc_sli_ring * pring,
                  struct lpfc_iocbq * prspiocb)
{
      struct lpfc_iocbq *cmd_iocb = NULL;
      uint16_t iotag;

      iotag = prspiocb->iocb.ulpIoTag;

      if (iotag != 0 && iotag <= phba->sli.last_iotag) {
            cmd_iocb = phba->sli.iocbq_lookup[iotag];
            list_del(&cmd_iocb->list);
            pring->txcmplq_cnt--;
            return cmd_iocb;
      }

      lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                  "%d:0317 iotag x%x is out off "
                  "range: max iotag x%x wd0 x%x\n",
                  phba->brd_no, iotag,
                  phba->sli.last_iotag,
                  *(((uint32_t *) &prspiocb->iocb) + 7));
      return NULL;
}

static int
lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
                    struct lpfc_iocbq *saveq)
{
      struct lpfc_iocbq * cmdiocbp;
      int rc = 1;
      unsigned long iflag;

      /* Based on the iotag field, get the cmd IOCB from the txcmplq */
      spin_lock_irqsave(phba->host->host_lock, iflag);
      cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
      if (cmdiocbp) {
            if (cmdiocbp->iocb_cmpl) {
                  /*
                   * Post all ELS completions to the worker thread.
                   * All other are passed to the completion callback.
                   */
                  if (pring->ringno == LPFC_ELS_RING) {
                        spin_unlock_irqrestore(phba->host->host_lock,
                                           iflag);
                        (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
                        spin_lock_irqsave(phba->host->host_lock, iflag);
                  }
                  else {
                        spin_unlock_irqrestore(phba->host->host_lock,
                                           iflag);
                        (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
                        spin_lock_irqsave(phba->host->host_lock, iflag);
                  }
            } else
                  lpfc_sli_release_iocbq(phba, cmdiocbp);
      } else {
            /*
             * Unknown initiating command based on the response iotag.
             * This could be the case on the ELS ring because of
             * lpfc_els_abort().
             */
            if (pring->ringno != LPFC_ELS_RING) {
                  /*
                   * Ring <ringno> handler: unexpected completion IoTag
                   * <IoTag>
                   */
                  lpfc_printf_log(phba,
                        KERN_WARNING,
                        LOG_SLI,
                        "%d:0322 Ring %d handler: unexpected "
                        "completion IoTag x%x Data: x%x x%x x%x x%x\n",
                        phba->brd_no,
                        pring->ringno,
                        saveq->iocb.ulpIoTag,
                        saveq->iocb.ulpStatus,
                        saveq->iocb.un.ulpWord[4],
                        saveq->iocb.ulpCommand,
                        saveq->iocb.ulpContext);
            }
      }

      spin_unlock_irqrestore(phba->host->host_lock, iflag);
      return rc;
}

static void lpfc_sli_rsp_pointers_error(struct lpfc_hba * phba,
                              struct lpfc_sli_ring * pring)
{
      struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
      /*
       * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
       * rsp ring <portRspMax>
       */
      lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                  "%d:0312 Ring %d handler: portRspPut %d "
                  "is bigger then rsp ring %d\n",
                  phba->brd_no, pring->ringno,
                  le32_to_cpu(pgp->rspPutInx),
                  pring->numRiocb);

      phba->hba_state = LPFC_HBA_ERROR;

      /*
       * All error attention handlers are posted to
       * worker thread
       */
      phba->work_ha |= HA_ERATT;
      phba->work_hs = HS_FFER3;
      if (phba->work_wait)
            wake_up(phba->work_wait);

      return;
}

void lpfc_sli_poll_fcp_ring(struct lpfc_hba * phba)
{
      struct lpfc_sli      * psli   = &phba->sli;
      struct lpfc_sli_ring * pring = &psli->ring[LPFC_FCP_RING];
      IOCB_t *irsp = NULL;
      IOCB_t *entry = NULL;
      struct lpfc_iocbq *cmdiocbq = NULL;
      struct lpfc_iocbq rspiocbq;
      struct lpfc_pgp *pgp;
      uint32_t status;
      uint32_t portRspPut, portRspMax;
      int type;
      uint32_t rsp_cmpl = 0;
      void __iomem *to_slim;
      uint32_t ha_copy;

      pring->stats.iocb_event++;

      /* The driver assumes SLI-2 mode */
      pgp =  &phba->slim2p->mbx.us.s2.port[pring->ringno];

      /*
       * The next available response entry should never exceed the maximum
       * entries.  If it does, treat it as an adapter hardware error.
       */
      portRspMax = pring->numRiocb;
      portRspPut = le32_to_cpu(pgp->rspPutInx);
      if (unlikely(portRspPut >= portRspMax)) {
            lpfc_sli_rsp_pointers_error(phba, pring);
            return;
      }

      rmb();
      while (pring->rspidx != portRspPut) {

            entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);

            if (++pring->rspidx >= portRspMax)
                  pring->rspidx = 0;

            lpfc_sli_pcimem_bcopy((uint32_t *) entry,
                              (uint32_t *) &rspiocbq.iocb,
                              sizeof (IOCB_t));
            irsp = &rspiocbq.iocb;
            type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
            pring->stats.iocb_rsp++;
            rsp_cmpl++;

            if (unlikely(irsp->ulpStatus)) {
                  /* Rsp ring <ringno> error: IOCB */
                  lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                              "%d:0326 Rsp Ring %d error: IOCB Data: "
                              "x%x x%x x%x x%x x%x x%x x%x x%x\n",
                              phba->brd_no, pring->ringno,
                              irsp->un.ulpWord[0],
                              irsp->un.ulpWord[1],
                              irsp->un.ulpWord[2],
                              irsp->un.ulpWord[3],
                              irsp->un.ulpWord[4],
                              irsp->un.ulpWord[5],
                              *(((uint32_t *) irsp) + 6),
                              *(((uint32_t *) irsp) + 7));
            }

            switch (type) {
            case LPFC_ABORT_IOCB:
            case LPFC_SOL_IOCB:
                  /*
                   * Idle exchange closed via ABTS from port.  No iocb
                   * resources need to be recovered.
                   */
                  if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
                        lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                                    "%d:0314 IOCB cmd 0x%x"
                                    " processed. Skipping"
                                    " completion", phba->brd_no,
                                    irsp->ulpCommand);
                        break;
                  }

                  cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
                                           &rspiocbq);
                  if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
                        (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
                                          &rspiocbq);
                  }
                  break;
            default:
                  if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
                        char adaptermsg[LPFC_MAX_ADPTMSG];
                        memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
                        memcpy(&adaptermsg[0], (uint8_t *) irsp,
                               MAX_MSG_DATA);
                        dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
                               phba->brd_no, adaptermsg);
                  } else {
                        /* Unknown IOCB command */
                        lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                                    "%d:0321 Unknown IOCB command "
                                    "Data: x%x, x%x x%x x%x x%x\n",
                                    phba->brd_no, type,
                                    irsp->ulpCommand,
                                    irsp->ulpStatus,
                                    irsp->ulpIoTag,
                                    irsp->ulpContext);
                  }
                  break;
            }

            /*
             * The response IOCB has been processed.  Update the ring
             * pointer in SLIM.  If the port response put pointer has not
             * been updated, sync the pgp->rspPutInx and fetch the new port
             * response put pointer.
             */
            to_slim = phba->MBslimaddr +
                  (SLIMOFF + (pring->ringno * 2) + 1) * 4;
            writeb(pring->rspidx, to_slim);

            if (pring->rspidx == portRspPut)
                  portRspPut = le32_to_cpu(pgp->rspPutInx);
      }

      ha_copy = readl(phba->HAregaddr);
      ha_copy >>= (LPFC_FCP_RING * 4);

      if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
            pring->stats.iocb_rsp_full++;
            status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
            writel(status, phba->CAregaddr);
            readl(phba->CAregaddr);
      }
      if ((ha_copy & HA_R0CE_RSP) &&
          (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
            pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
            pring->stats.iocb_cmd_empty++;

            /* Force update of the local copy of cmdGetInx */
            pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
            lpfc_sli_resume_iocb(phba, pring);

            if ((pring->lpfc_sli_cmd_available))
                  (pring->lpfc_sli_cmd_available) (phba, pring);

      }

      return;
}

/*
 * This routine presumes LPFC_FCP_RING handling and doesn't bother
 * to check it explicitly.
 */
static int
lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
                        struct lpfc_sli_ring * pring, uint32_t mask)
{
      struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
      IOCB_t *irsp = NULL;
      IOCB_t *entry = NULL;
      struct lpfc_iocbq *cmdiocbq = NULL;
      struct lpfc_iocbq rspiocbq;
      uint32_t status;
      uint32_t portRspPut, portRspMax;
      int rc = 1;
      lpfc_iocb_type type;
      unsigned long iflag;
      uint32_t rsp_cmpl = 0;
      void __iomem  *to_slim;

      spin_lock_irqsave(phba->host->host_lock, iflag);
      pring->stats.iocb_event++;

      /*
       * The next available response entry should never exceed the maximum
       * entries.  If it does, treat it as an adapter hardware error.
       */
      portRspMax = pring->numRiocb;
      portRspPut = le32_to_cpu(pgp->rspPutInx);
      if (unlikely(portRspPut >= portRspMax)) {
            lpfc_sli_rsp_pointers_error(phba, pring);
            spin_unlock_irqrestore(phba->host->host_lock, iflag);
            return 1;
      }

      rmb();
      while (pring->rspidx != portRspPut) {
            /*
             * Fetch an entry off the ring and copy it into a local data
             * structure.  The copy involves a byte-swap since the
             * network byte order and pci byte orders are different.
             */
            entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);

            if (++pring->rspidx >= portRspMax)
                  pring->rspidx = 0;

            lpfc_sli_pcimem_bcopy((uint32_t *) entry,
                              (uint32_t *) &rspiocbq.iocb,
                              sizeof (IOCB_t));
            irsp = &rspiocbq.iocb;

            type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
            pring->stats.iocb_rsp++;
            rsp_cmpl++;

            if (unlikely(irsp->ulpStatus)) {
                  /* Rsp ring <ringno> error: IOCB */
                  lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
                        "%d:0336 Rsp Ring %d error: IOCB Data: "
                        "x%x x%x x%x x%x x%x x%x x%x x%x\n",
                        phba->brd_no, pring->ringno,
                        irsp->un.ulpWord[0], irsp->un.ulpWord[1],
                        irsp->un.ulpWord[2], irsp->un.ulpWord[3],
                        irsp->un.ulpWord[4], irsp->un.ulpWord[5],
                        *(((uint32_t *) irsp) + 6),
                        *(((uint32_t *) irsp) + 7));
            }

            switch (type) {
            case LPFC_ABORT_IOCB:
            case LPFC_SOL_IOCB:
                  /*
                   * Idle exchange closed via ABTS from port.  No iocb
                   * resources need to be recovered.
                   */
                  if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
                        lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                                    "%d:0333 IOCB cmd 0x%x"
                                    " processed. Skipping"
                                    " completion\n", phba->brd_no,
                                    irsp->ulpCommand);
                        break;
                  }

                  cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
                                           &rspiocbq);
                  if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
                        if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
                              (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
                                                &rspiocbq);
                        } else {
                              spin_unlock_irqrestore(
                                    phba->host->host_lock, iflag);
                              (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
                                                &rspiocbq);
                              spin_lock_irqsave(phba->host->host_lock,
                                            iflag);
                        }
                  }
                  break;
            default:
                  if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
                        char adaptermsg[LPFC_MAX_ADPTMSG];
                        memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
                        memcpy(&adaptermsg[0], (uint8_t *) irsp,
                               MAX_MSG_DATA);
                        dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
                               phba->brd_no, adaptermsg);
                  } else {
                        /* Unknown IOCB command */
                        lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                              "%d:0334 Unknown IOCB command "
                              "Data: x%x, x%x x%x x%x x%x\n",
                              phba->brd_no, type, irsp->ulpCommand,
                              irsp->ulpStatus, irsp->ulpIoTag,
                              irsp->ulpContext);
                  }
                  break;
            }

            /*
             * The response IOCB has been processed.  Update the ring
             * pointer in SLIM.  If the port response put pointer has not
             * been updated, sync the pgp->rspPutInx and fetch the new port
             * response put pointer.
             */
            to_slim = phba->MBslimaddr +
                  (SLIMOFF + (pring->ringno * 2) + 1) * 4;
            writel(pring->rspidx, to_slim);

            if (pring->rspidx == portRspPut)
                  portRspPut = le32_to_cpu(pgp->rspPutInx);
      }

      if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
            pring->stats.iocb_rsp_full++;
            status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
            writel(status, phba->CAregaddr);
            readl(phba->CAregaddr);
      }
      if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
            pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
            pring->stats.iocb_cmd_empty++;

            /* Force update of the local copy of cmdGetInx */
            pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
            lpfc_sli_resume_iocb(phba, pring);

            if ((pring->lpfc_sli_cmd_available))
                  (pring->lpfc_sli_cmd_available) (phba, pring);

      }

      spin_unlock_irqrestore(phba->host->host_lock, iflag);
      return rc;
}


int
lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
                     struct lpfc_sli_ring * pring, uint32_t mask)
{
      IOCB_t *entry;
      IOCB_t *irsp = NULL;
      struct lpfc_iocbq *rspiocbp = NULL;
      struct lpfc_iocbq *next_iocb;
      struct lpfc_iocbq *cmdiocbp;
      struct lpfc_iocbq *saveq;
      struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
      uint8_t iocb_cmd_type;
      lpfc_iocb_type type;
      uint32_t status, free_saveq;
      uint32_t portRspPut, portRspMax;
      int rc = 1;
      unsigned long iflag;
      void __iomem  *to_slim;

      spin_lock_irqsave(phba->host->host_lock, iflag);
      pring->stats.iocb_event++;

      /*
       * The next available response entry should never exceed the maximum
       * entries.  If it does, treat it as an adapter hardware error.
       */
      portRspMax = pring->numRiocb;
      portRspPut = le32_to_cpu(pgp->rspPutInx);
      if (portRspPut >= portRspMax) {
            /*
             * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
             * rsp ring <portRspMax>
             */
            lpfc_printf_log(phba,
                        KERN_ERR,
                        LOG_SLI,
                        "%d:0303 Ring %d handler: portRspPut %d "
                        "is bigger then rsp ring %d\n",
                        phba->brd_no,
                        pring->ringno, portRspPut, portRspMax);

            phba->hba_state = LPFC_HBA_ERROR;
            spin_unlock_irqrestore(phba->host->host_lock, iflag);

            phba->work_hs = HS_FFER3;
            lpfc_handle_eratt(phba);

            return 1;
      }

      rmb();
      while (pring->rspidx != portRspPut) {
            /*
             * Build a completion list and call the appropriate handler.
             * The process is to get the next available response iocb, get
             * a free iocb from the list, copy the response data into the
             * free iocb, insert to the continuation list, and update the
             * next response index to slim.  This process makes response
             * iocb's in the ring available to DMA as fast as possible but
             * pays a penalty for a copy operation.  Since the iocb is
             * only 32 bytes, this penalty is considered small relative to
             * the PCI reads for register values and a slim write.  When
             * the ulpLe field is set, the entire Command has been
             * received.
             */
            entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
            rspiocbp = lpfc_sli_get_iocbq(phba);
            if (rspiocbp == NULL) {
                  printk(KERN_ERR "%s: out of buffers! Failing "
                         "completion.\n", __FUNCTION__);
                  break;
            }

            lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
            irsp = &rspiocbp->iocb;

            if (++pring->rspidx >= portRspMax)
                  pring->rspidx = 0;

            to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
                                    + 1) * 4;
            writel(pring->rspidx, to_slim);

            if (list_empty(&(pring->iocb_continueq))) {
                  list_add(&rspiocbp->list, &(pring->iocb_continueq));
            } else {
                  list_add_tail(&rspiocbp->list,
                              &(pring->iocb_continueq));
            }

            pring->iocb_continueq_cnt++;
            if (irsp->ulpLe) {
                  /*
                   * By default, the driver expects to free all resources
                   * associated with this iocb completion.
                   */
                  free_saveq = 1;
                  saveq = list_get_first(&pring->iocb_continueq,
                                     struct lpfc_iocbq, list);
                  irsp = &(saveq->iocb);
                  list_del_init(&pring->iocb_continueq);
                  pring->iocb_continueq_cnt = 0;

                  pring->stats.iocb_rsp++;

                  if (irsp->ulpStatus) {
                        /* Rsp ring <ringno> error: IOCB */
                        lpfc_printf_log(phba,
                              KERN_WARNING,
                              LOG_SLI,
                              "%d:0328 Rsp Ring %d error: IOCB Data: "
                              "x%x x%x x%x x%x x%x x%x x%x x%x\n",
                              phba->brd_no,
                              pring->ringno,
                              irsp->un.ulpWord[0],
                              irsp->un.ulpWord[1],
                              irsp->un.ulpWord[2],
                              irsp->un.ulpWord[3],
                              irsp->un.ulpWord[4],
                              irsp->un.ulpWord[5],
                              *(((uint32_t *) irsp) + 6),
                              *(((uint32_t *) irsp) + 7));
                  }

                  /*
                   * Fetch the IOCB command type and call the correct
                   * completion routine.  Solicited and Unsolicited
                   * IOCBs on the ELS ring get freed back to the
                   * lpfc_iocb_list by the discovery kernel thread.
                   */
                  iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
                  type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
                  if (type == LPFC_SOL_IOCB) {
                        spin_unlock_irqrestore(phba->host->host_lock,
                                           iflag);
                        rc = lpfc_sli_process_sol_iocb(phba, pring,
                              saveq);
                        spin_lock_irqsave(phba->host->host_lock, iflag);
                  } else if (type == LPFC_UNSOL_IOCB) {
                        spin_unlock_irqrestore(phba->host->host_lock,
                                           iflag);
                        rc = lpfc_sli_process_unsol_iocb(phba, pring,
                              saveq);
                        spin_lock_irqsave(phba->host->host_lock, iflag);
                  } else if (type == LPFC_ABORT_IOCB) {
                        if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
                            ((cmdiocbp =
                              lpfc_sli_iocbq_lookup(phba, pring,
                                              saveq)))) {
                              /* Call the specified completion
                                 routine */
                              if (cmdiocbp->iocb_cmpl) {
                                    spin_unlock_irqrestore(
                                           phba->host->host_lock,
                                           iflag);
                                    (cmdiocbp->iocb_cmpl) (phba,
                                               cmdiocbp, saveq);
                                    spin_lock_irqsave(
                                            phba->host->host_lock,
                                            iflag);
                              } else
                                    lpfc_sli_release_iocbq(phba,
                                                      cmdiocbp);
                        }
                  } else if (type == LPFC_UNKNOWN_IOCB) {
                        if (irsp->ulpCommand == CMD_ADAPTER_MSG) {

                              char adaptermsg[LPFC_MAX_ADPTMSG];

                              memset(adaptermsg, 0,
                                     LPFC_MAX_ADPTMSG);
                              memcpy(&adaptermsg[0], (uint8_t *) irsp,
                                     MAX_MSG_DATA);
                              dev_warn(&((phba->pcidev)->dev),
                                     "lpfc%d: %s",
                                     phba->brd_no, adaptermsg);
                        } else {
                              /* Unknown IOCB command */
                              lpfc_printf_log(phba,
                                    KERN_ERR,
                                    LOG_SLI,
                                    "%d:0335 Unknown IOCB command "
                                    "Data: x%x x%x x%x x%x\n",
                                    phba->brd_no,
                                    irsp->ulpCommand,
                                    irsp->ulpStatus,
                                    irsp->ulpIoTag,
                                    irsp->ulpContext);
                        }
                  }

                  if (free_saveq) {
                        if (!list_empty(&saveq->list)) {
                              list_for_each_entry_safe(rspiocbp,
                                                 next_iocb,
                                                 &saveq->list,
                                                 list) {
                                    list_del(&rspiocbp->list);
                                    lpfc_sli_release_iocbq(phba,
                                                     rspiocbp);
                              }
                        }
                        lpfc_sli_release_iocbq(phba, saveq);
                  }
            }

            /*
             * If the port response put pointer has not been updated, sync
             * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
             * response put pointer.
             */
            if (pring->rspidx == portRspPut) {
                  portRspPut = le32_to_cpu(pgp->rspPutInx);
            }
      } /* while (pring->rspidx != portRspPut) */

      if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
            /* At least one response entry has been freed */
            pring->stats.iocb_rsp_full++;
            /* SET RxRE_RSP in Chip Att register */
            status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
            writel(status, phba->CAregaddr);
            readl(phba->CAregaddr); /* flush */
      }
      if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
            pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
            pring->stats.iocb_cmd_empty++;

            /* Force update of the local copy of cmdGetInx */
            pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
            lpfc_sli_resume_iocb(phba, pring);

            if ((pring->lpfc_sli_cmd_available))
                  (pring->lpfc_sli_cmd_available) (phba, pring);

      }

      spin_unlock_irqrestore(phba->host->host_lock, iflag);
      return rc;
}

int
lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
      struct lpfc_iocbq *iocb, *next_iocb;
      IOCB_t *icmd = NULL, *cmd = NULL;
      int errcnt;

      errcnt = 0;

      /* Error everything on txq and txcmplq
       * First do the txq.
       */
      spin_lock_irq(phba->host->host_lock);
      list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
            list_del_init(&iocb->list);
            if (iocb->iocb_cmpl) {
                  icmd = &iocb->iocb;
                  icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
                  icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
                  spin_unlock_irq(phba->host->host_lock);
                  (iocb->iocb_cmpl) (phba, iocb, iocb);
                  spin_lock_irq(phba->host->host_lock);
            } else
                  lpfc_sli_release_iocbq(phba, iocb);
      }
      pring->txq_cnt = 0;
      INIT_LIST_HEAD(&(pring->txq));

      /* Next issue ABTS for everything on the txcmplq */
      list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
            cmd = &iocb->iocb;

            /*
             * Imediate abort of IOCB, deque and call compl
             */

            list_del_init(&iocb->list);
            pring->txcmplq_cnt--;

            if (iocb->iocb_cmpl) {
                  cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
                  cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
                  spin_unlock_irq(phba->host->host_lock);
                  (iocb->iocb_cmpl) (phba, iocb, iocb);
                  spin_lock_irq(phba->host->host_lock);
            } else
                  lpfc_sli_release_iocbq(phba, iocb);
      }

      INIT_LIST_HEAD(&pring->txcmplq);
      pring->txcmplq_cnt = 0;
      spin_unlock_irq(phba->host->host_lock);

      return errcnt;
}

int
lpfc_sli_brdready(struct lpfc_hba * phba, uint32_t mask)
{
      uint32_t status;
      int i = 0;
      int retval = 0;

      /* Read the HBA Host Status Register */
      status = readl(phba->HSregaddr);

      /*
       * Check status register every 100ms for 5 retries, then every
       * 500ms for 5, then every 2.5 sec for 5, then reset board and
       * every 2.5 sec for 4.
       * Break our of the loop if errors occurred during init.
       */
      while (((status & mask) != mask) &&
             !(status & HS_FFERM) &&
             i++ < 20) {

            if (i <= 5)
                  msleep(10);
            else if (i <= 10)
                  msleep(500);
            else
                  msleep(2500);

            if (i == 15) {
                  phba->hba_state = LPFC_STATE_UNKNOWN; /* Do post */
                  lpfc_sli_brdrestart(phba);
            }
            /* Read the HBA Host Status Register */
            status = readl(phba->HSregaddr);
      }

      /* Check to see if any errors occurred during init */
      if ((status & HS_FFERM) || (i >= 20)) {
            phba->hba_state = LPFC_HBA_ERROR;
            retval = 1;
      }

      return retval;
}

#define BARRIER_TEST_PATTERN (0xdeadbeef)

void lpfc_reset_barrier(struct lpfc_hba * phba)
{
      uint32_t __iomem *resp_buf;
      uint32_t __iomem *mbox_buf;
      volatile uint32_t mbox;
      uint32_t hc_copy;
      int  i;
      uint8_t hdrtype;

      pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
      if (hdrtype != 0x80 ||
          (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
           FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
            return;

      /*
       * Tell the other part of the chip to suspend temporarily all
       * its DMA activity.
       */
      resp_buf = phba->MBslimaddr;

      /* Disable the error attention */
      hc_copy = readl(phba->HCregaddr);
      writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
      readl(phba->HCregaddr); /* flush */

      if (readl(phba->HAregaddr) & HA_ERATT) {
            /* Clear Chip error bit */
            writel(HA_ERATT, phba->HAregaddr);
            phba->stopped = 1;
      }

      mbox = 0;
      ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD;
      ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP;

      writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
      mbox_buf = phba->MBslimaddr;
      writel(mbox, mbox_buf);

      for (i = 0;
           readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++)
            mdelay(1);

      if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) {
            if (phba->sli.sli_flag & LPFC_SLI2_ACTIVE ||
                phba->stopped)
                  goto restore_hc;
            else
                  goto clear_errat;
      }

      ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST;
      for (i = 0; readl(resp_buf) != mbox &&  i < 500; i++)
            mdelay(1);

clear_errat:

      while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500)
            mdelay(1);

      if (readl(phba->HAregaddr) & HA_ERATT) {
            writel(HA_ERATT, phba->HAregaddr);
            phba->stopped = 1;
      }

restore_hc:
      writel(hc_copy, phba->HCregaddr);
      readl(phba->HCregaddr); /* flush */
}

int
lpfc_sli_brdkill(struct lpfc_hba * phba)
{
      struct lpfc_sli *psli;
      LPFC_MBOXQ_t *pmb;
      uint32_t status;
      uint32_t ha_copy;
      int retval;
      int i = 0;

      psli = &phba->sli;

      /* Kill HBA */
      lpfc_printf_log(phba,
            KERN_INFO,
            LOG_SLI,
            "%d:0329 Kill HBA Data: x%x x%x\n",
            phba->brd_no,
            phba->hba_state,
            psli->sli_flag);

      if ((pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
                                      GFP_KERNEL)) == 0)
            return 1;

      /* Disable the error attention */
      spin_lock_irq(phba->host->host_lock);
      status = readl(phba->HCregaddr);
      status &= ~HC_ERINT_ENA;
      writel(status, phba->HCregaddr);
      readl(phba->HCregaddr); /* flush */
      spin_unlock_irq(phba->host->host_lock);

      lpfc_kill_board(phba, pmb);
      pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
      retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);

      if (retval != MBX_SUCCESS) {
            if (retval != MBX_BUSY)
                  mempool_free(pmb, phba->mbox_mem_pool);
            return 1;
      }

      psli->sli_flag &= ~LPFC_SLI2_ACTIVE;

      mempool_free(pmb, phba->mbox_mem_pool);

      /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
       * attention every 100ms for 3 seconds. If we don't get ERATT after
       * 3 seconds we still set HBA_ERROR state because the status of the
       * board is now undefined.
       */
      ha_copy = readl(phba->HAregaddr);

      while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
            mdelay(100);
            ha_copy = readl(phba->HAregaddr);
      }

      del_timer_sync(&psli->mbox_tmo);
      if (ha_copy & HA_ERATT) {
            writel(HA_ERATT, phba->HAregaddr);
            phba->stopped = 1;
      }
      spin_lock_irq(phba->host->host_lock);
      psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
      spin_unlock_irq(phba->host->host_lock);

      psli->mbox_active = NULL;
      lpfc_hba_down_post(phba);
      phba->hba_state = LPFC_HBA_ERROR;

      return (ha_copy & HA_ERATT ? 0 : 1);
}

int
lpfc_sli_brdreset(struct lpfc_hba * phba)
{
      struct lpfc_sli *psli;
      struct lpfc_sli_ring *pring;
      uint16_t cfg_value;
      int i;

      psli = &phba->sli;

      /* Reset HBA */
      lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                  "%d:0325 Reset HBA Data: x%x x%x\n", phba->brd_no,
                  phba->hba_state, psli->sli_flag);

      /* perform board reset */
      phba->fc_eventTag = 0;
      phba->fc_myDID = 0;
      phba->fc_prevDID = 0;

      /* Turn off parity checking and serr during the physical reset */
      pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
      pci_write_config_word(phba->pcidev, PCI_COMMAND,
                        (cfg_value &
                         ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));

      psli->sli_flag &= ~(LPFC_SLI2_ACTIVE | LPFC_PROCESS_LA);
      /* Now toggle INITFF bit in the Host Control Register */
      writel(HC_INITFF, phba->HCregaddr);
      mdelay(1);
      readl(phba->HCregaddr); /* flush */
      writel(0, phba->HCregaddr);
      readl(phba->HCregaddr); /* flush */

      /* Restore PCI cmd register */
      pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);

      /* Initialize relevant SLI info */
      for (i = 0; i < psli->num_rings; i++) {
            pring = &psli->ring[i];
            pring->flag = 0;
            pring->rspidx = 0;
            pring->next_cmdidx  = 0;
            pring->local_getidx = 0;
            pring->cmdidx = 0;
            pring->missbufcnt = 0;
      }

      phba->hba_state = LPFC_WARM_START;
      return 0;
}

int
lpfc_sli_brdrestart(struct lpfc_hba * phba)
{
      MAILBOX_t *mb;
      struct lpfc_sli *psli;
      uint16_t skip_post;
      volatile uint32_t word0;
      void __iomem *to_slim;

      spin_lock_irq(phba->host->host_lock);

      psli = &phba->sli;

      /* Restart HBA */
      lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                  "%d:0337 Restart HBA Data: x%x x%x\n", phba->brd_no,
                  phba->hba_state, psli->sli_flag);

      word0 = 0;
      mb = (MAILBOX_t *) &word0;
      mb->mbxCommand = MBX_RESTART;
      mb->mbxHc = 1;

      lpfc_reset_barrier(phba);

      to_slim = phba->MBslimaddr;
      writel(*(uint32_t *) mb, to_slim);
      readl(to_slim); /* flush */

      /* Only skip post after fc_ffinit is completed */
      if (phba->hba_state) {
            skip_post = 1;
            word0 = 1;  /* This is really setting up word1 */
      } else {
            skip_post = 0;
            word0 = 0;  /* This is really setting up word1 */
      }
      to_slim = phba->MBslimaddr + sizeof (uint32_t);
      writel(*(uint32_t *) mb, to_slim);
      readl(to_slim); /* flush */

      lpfc_sli_brdreset(phba);
      phba->stopped = 0;
      phba->hba_state = LPFC_INIT_START;

      spin_unlock_irq(phba->host->host_lock);

      memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
      psli->stats_start = get_seconds();

      if (skip_post)
            mdelay(100);
      else
            mdelay(2000);

      lpfc_hba_down_post(phba);

      return 0;
}

static int
lpfc_sli_chipset_init(struct lpfc_hba *phba)
{
      uint32_t status, i = 0;

      /* Read the HBA Host Status Register */
      status = readl(phba->HSregaddr);

      /* Check status register to see what current state is */
      i = 0;
      while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {

            /* Check every 100ms for 5 retries, then every 500ms for 5, then
             * every 2.5 sec for 5, then reset board and every 2.5 sec for
             * 4.
             */
            if (i++ >= 20) {
                  /* Adapter failed to init, timeout, status reg
                     <status> */
                  lpfc_printf_log(phba,
                              KERN_ERR,
                              LOG_INIT,
                              "%d:0436 Adapter failed to init, "
                              "timeout, status reg x%x\n",
                              phba->brd_no,
                              status);
                  phba->hba_state = LPFC_HBA_ERROR;
                  return -ETIMEDOUT;
            }

            /* Check to see if any errors occurred during init */
            if (status & HS_FFERM) {
                  /* ERROR: During chipset initialization */
                  /* Adapter failed to init, chipset, status reg
                     <status> */
                  lpfc_printf_log(phba,
                              KERN_ERR,
                              LOG_INIT,
                              "%d:0437 Adapter failed to init, "
                              "chipset, status reg x%x\n",
                              phba->brd_no,
                              status);
                  phba->hba_state = LPFC_HBA_ERROR;
                  return -EIO;
            }

            if (i <= 5) {
                  msleep(10);
            } else if (i <= 10) {
                  msleep(500);
            } else {
                  msleep(2500);
            }

            if (i == 15) {
                  phba->hba_state = LPFC_STATE_UNKNOWN; /* Do post */
                  lpfc_sli_brdrestart(phba);
            }
            /* Read the HBA Host Status Register */
            status = readl(phba->HSregaddr);
      }

      /* Check to see if any errors occurred during init */
      if (status & HS_FFERM) {
            /* ERROR: During chipset initialization */
            /* Adapter failed to init, chipset, status reg <status> */
            lpfc_printf_log(phba,
                        KERN_ERR,
                        LOG_INIT,
                        "%d:0438 Adapter failed to init, chipset, "
                        "status reg x%x\n",
                        phba->brd_no,
                        status);
            phba->hba_state = LPFC_HBA_ERROR;
            return -EIO;
      }

      /* Clear all interrupt enable conditions */
      writel(0, phba->HCregaddr);
      readl(phba->HCregaddr); /* flush */

      /* setup host attn register */
      writel(0xffffffff, phba->HAregaddr);
      readl(phba->HAregaddr); /* flush */
      return 0;
}

int
lpfc_sli_hba_setup(struct lpfc_hba * phba)
{
      LPFC_MBOXQ_t *pmb;
      uint32_t resetcount = 0, rc = 0, done = 0;

      pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
      if (!pmb) {
            phba->hba_state = LPFC_HBA_ERROR;
            return -ENOMEM;
      }

      while (resetcount < 2 && !done) {
            spin_lock_irq(phba->host->host_lock);
            phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
            spin_unlock_irq(phba->host->host_lock);
            phba->hba_state = LPFC_STATE_UNKNOWN;
            lpfc_sli_brdrestart(phba);
            msleep(2500);
            rc = lpfc_sli_chipset_init(phba);
            if (rc)
                  break;

            spin_lock_irq(phba->host->host_lock);
            phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
            spin_unlock_irq(phba->host->host_lock);
            resetcount++;

      /* Call pre CONFIG_PORT mailbox command initialization.  A value of 0
       * means the call was successful.  Any other nonzero value is a failure,
       * but if ERESTART is returned, the driver may reset the HBA and try
       * again.
       */
            rc = lpfc_config_port_prep(phba);
            if (rc == -ERESTART) {
                  phba->hba_state = 0;
                  continue;
            } else if (rc) {
                  break;
            }

            phba->hba_state = LPFC_INIT_MBX_CMDS;
            lpfc_config_port(phba, pmb);
            rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
            if (rc == MBX_SUCCESS)
                  done = 1;
            else {
                  lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                        "%d:0442 Adapter failed to init, mbxCmd x%x "
                        "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
                        phba->brd_no, pmb->mb.mbxCommand,
                        pmb->mb.mbxStatus, 0);
                  phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
            }
      }
      if (!done)
            goto lpfc_sli_hba_setup_error;

      rc = lpfc_sli_ring_map(phba, pmb);

      if (rc)
            goto lpfc_sli_hba_setup_error;

      phba->sli.sli_flag |= LPFC_PROCESS_LA;

      rc = lpfc_config_port_post(phba);
      if (rc)
            goto lpfc_sli_hba_setup_error;

      goto lpfc_sli_hba_setup_exit;
lpfc_sli_hba_setup_error:
      phba->hba_state = LPFC_HBA_ERROR;
lpfc_sli_hba_setup_exit:
      mempool_free(pmb, phba->mbox_mem_pool);
      return rc;
}

static void
lpfc_mbox_abort(struct lpfc_hba * phba)
{
      LPFC_MBOXQ_t *pmbox;
      MAILBOX_t *mb;

      if (phba->sli.mbox_active) {
            del_timer_sync(&phba->sli.mbox_tmo);
            phba->work_hba_events &= ~WORKER_MBOX_TMO;
            pmbox = phba->sli.mbox_active;
            mb = &pmbox->mb;
            phba->sli.mbox_active = NULL;
            if (pmbox->mbox_cmpl) {
                  mb->mbxStatus = MBX_NOT_FINISHED;
                  (pmbox->mbox_cmpl) (phba, pmbox);
            }
            phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
      }

      /* Abort all the non active mailbox commands. */
      spin_lock_irq(phba->host->host_lock);
      pmbox = lpfc_mbox_get(phba);
      while (pmbox) {
            mb = &pmbox->mb;
            if (pmbox->mbox_cmpl) {
                  mb->mbxStatus = MBX_NOT_FINISHED;
                  spin_unlock_irq(phba->host->host_lock);
                  (pmbox->mbox_cmpl) (phba, pmbox);
                  spin_lock_irq(phba->host->host_lock);
            }
            pmbox = lpfc_mbox_get(phba);
      }
      spin_unlock_irq(phba->host->host_lock);
      return;
}

/*! lpfc_mbox_timeout
 *
 * \pre
 * \post
 * \param hba Pointer to per struct lpfc_hba structure
 * \param l1  Pointer to the driver's mailbox queue.
 * \return
 *   void
 *
 * \b Description:
 *
 * This routine handles mailbox timeout events at timer interrupt context.
 */
void
lpfc_mbox_timeout(unsigned long ptr)
{
      struct lpfc_hba *phba;
      unsigned long iflag;

      phba = (struct lpfc_hba *)ptr;
      spin_lock_irqsave(phba->host->host_lock, iflag);
      if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
            phba->work_hba_events |= WORKER_MBOX_TMO;
            if (phba->work_wait)
                  wake_up(phba->work_wait);
      }
      spin_unlock_irqrestore(phba->host->host_lock, iflag);
}

void
lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
{
      LPFC_MBOXQ_t *pmbox;
      MAILBOX_t *mb;

      spin_lock_irq(phba->host->host_lock);
      if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
            spin_unlock_irq(phba->host->host_lock);
            return;
      }

      phba->work_hba_events &= ~WORKER_MBOX_TMO;

      pmbox = phba->sli.mbox_active;
      mb = &pmbox->mb;

      /* Mbox cmd <mbxCommand> timeout */
      lpfc_printf_log(phba,
            KERN_ERR,
            LOG_MBOX | LOG_SLI,
            "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
            phba->brd_no,
            mb->mbxCommand,
            phba->hba_state,
            phba->sli.sli_flag,
            phba->sli.mbox_active);

      phba->sli.mbox_active = NULL;
      if (pmbox->mbox_cmpl) {
            mb->mbxStatus = MBX_NOT_FINISHED;
            spin_unlock_irq(phba->host->host_lock);
            (pmbox->mbox_cmpl) (phba, pmbox);
            spin_lock_irq(phba->host->host_lock);
      }
      phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;

      spin_unlock_irq(phba->host->host_lock);
      lpfc_mbox_abort(phba);
      return;
}

int
lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
{
      MAILBOX_t *mb;
      struct lpfc_sli *psli;
      uint32_t status, evtctr;
      uint32_t ha_copy;
      int i;
      unsigned long drvr_flag = 0;
      volatile uint32_t word0, ldata;
      void __iomem *to_slim;

      psli = &phba->sli;

      spin_lock_irqsave(phba->host->host_lock, drvr_flag);


      mb = &pmbox->mb;
      status = MBX_SUCCESS;

      if (phba->hba_state == LPFC_HBA_ERROR) {
            spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);

            /* Mbox command <mbxCommand> cannot issue */
            LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
            return (MBX_NOT_FINISHED);
      }

      if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
          !(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
            spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
            LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
            return (MBX_NOT_FINISHED);
      }

      if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
            /* Polling for a mbox command when another one is already active
             * is not allowed in SLI. Also, the driver must have established
             * SLI2 mode to queue and process multiple mbox commands.
             */

            if (flag & MBX_POLL) {
                  spin_unlock_irqrestore(phba->host->host_lock,
                                     drvr_flag);

                  /* Mbox command <mbxCommand> cannot issue */
                  LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
                  return (MBX_NOT_FINISHED);
            }

            if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
                  spin_unlock_irqrestore(phba->host->host_lock,
                                     drvr_flag);
                  /* Mbox command <mbxCommand> cannot issue */
                  LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
                  return (MBX_NOT_FINISHED);
            }

            /* Handle STOP IOCB processing flag. This is only meaningful
             * if we are not polling for mbox completion.
             */
            if (flag & MBX_STOP_IOCB) {
                  flag &= ~MBX_STOP_IOCB;
                  /* Now flag each ring */
                  for (i = 0; i < psli->num_rings; i++) {
                        /* If the ring is active, flag it */
                        if (psli->ring[i].cmdringaddr) {
                              psli->ring[i].flag |=
                                  LPFC_STOP_IOCB_MBX;
                        }
                  }
            }

            /* Another mailbox command is still being processed, queue this
             * command to be processed later.
             */
            lpfc_mbox_put(phba, pmbox);

            /* Mbox cmd issue - BUSY */
            lpfc_printf_log(phba,
                  KERN_INFO,
                  LOG_MBOX | LOG_SLI,
                  "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
                  phba->brd_no,
                  mb->mbxCommand,
                  phba->hba_state,
                  psli->sli_flag,
                  flag);

            psli->slistat.mbox_busy++;
            spin_unlock_irqrestore(phba->host->host_lock,
                               drvr_flag);

            return (MBX_BUSY);
      }

      /* Handle STOP IOCB processing flag. This is only meaningful
       * if we are not polling for mbox completion.
       */
      if (flag & MBX_STOP_IOCB) {
            flag &= ~MBX_STOP_IOCB;
            if (flag == MBX_NOWAIT) {
                  /* Now flag each ring */
                  for (i = 0; i < psli->num_rings; i++) {
                        /* If the ring is active, flag it */
                        if (psli->ring[i].cmdringaddr) {
                              psli->ring[i].flag |=
                                  LPFC_STOP_IOCB_MBX;
                        }
                  }
            }
      }

      psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;

      /* If we are not polling, we MUST be in SLI2 mode */
      if (flag != MBX_POLL) {
            if (!(psli->sli_flag & LPFC_SLI2_ACTIVE) &&
                (mb->mbxCommand != MBX_KILL_BOARD)) {
                  psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
                  spin_unlock_irqrestore(phba->host->host_lock,
                                     drvr_flag);
                  /* Mbox command <mbxCommand> cannot issue */
                  LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
                  return (MBX_NOT_FINISHED);
            }
            /* timeout active mbox command */
            mod_timer(&psli->mbox_tmo, (jiffies +
                         (HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand))));
      }

      /* Mailbox cmd <cmd> issue */
      lpfc_printf_log(phba,
            KERN_INFO,
            LOG_MBOX | LOG_SLI,
            "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
            phba->brd_no,
            mb->mbxCommand,
            phba->hba_state,
            psli->sli_flag,
            flag);

      psli->slistat.mbox_cmd++;
      evtctr = psli->slistat.mbox_event;

      /* next set own bit for the adapter and copy over command word */
      mb->mbxOwner = OWN_CHIP;

      if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
            /* First copy command data to host SLIM area */
            lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
      } else {
            if (mb->mbxCommand == MBX_CONFIG_PORT) {
                  /* copy command data into host mbox for cmpl */
                  lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
                              MAILBOX_CMD_SIZE);
            }

            /* First copy mbox command data to HBA SLIM, skip past first
               word */
            to_slim = phba->MBslimaddr + sizeof (uint32_t);
            lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
                      MAILBOX_CMD_SIZE - sizeof (uint32_t));

            /* Next copy over first word, with mbxOwner set */
            ldata = *((volatile uint32_t *)mb);
            to_slim = phba->MBslimaddr;
            writel(ldata, to_slim);
            readl(to_slim); /* flush */

            if (mb->mbxCommand == MBX_CONFIG_PORT) {
                  /* switch over to host mailbox */
                  psli->sli_flag |= LPFC_SLI2_ACTIVE;
            }
      }

      wmb();
      /* interrupt board to doit right away */
      writel(CA_MBATT, phba->CAregaddr);
      readl(phba->CAregaddr); /* flush */

      switch (flag) {
      case MBX_NOWAIT:
            /* Don't wait for it to finish, just return */
            psli->mbox_active = pmbox;
            break;

      case MBX_POLL:
            psli->mbox_active = NULL;
            if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
                  /* First read mbox status word */
                  word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
                  word0 = le32_to_cpu(word0);
            } else {
                  /* First read mbox status word */
                  word0 = readl(phba->MBslimaddr);
            }

            /* Read the HBA Host Attention Register */
            ha_copy = readl(phba->HAregaddr);

            i = lpfc_mbox_tmo_val(phba, mb->mbxCommand);
            i *= 1000; /* Convert to ms */

            /* Wait for command to complete */
            while (((word0 & OWN_CHIP) == OWN_CHIP) ||
                   (!(ha_copy & HA_MBATT) &&
                  (phba->hba_state > LPFC_WARM_START))) {
                  if (i-- <= 0) {
                        psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
                        spin_unlock_irqrestore(phba->host->host_lock,
                                           drvr_flag);
                        return (MBX_NOT_FINISHED);
                  }

                  /* Check if we took a mbox interrupt while we were
                     polling */
                  if (((word0 & OWN_CHIP) != OWN_CHIP)
                      && (evtctr != psli->slistat.mbox_event))
                        break;

                  spin_unlock_irqrestore(phba->host->host_lock,
                                     drvr_flag);

                  /* Can be in interrupt context, do not sleep */
                  /* (or might be called with interrupts disabled) */
                  mdelay(1);

                  spin_lock_irqsave(phba->host->host_lock, drvr_flag);

                  if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
                        /* First copy command data */
                        word0 = *((volatile uint32_t *)
                                    &phba->slim2p->mbx);
                        word0 = le32_to_cpu(word0);
                        if (mb->mbxCommand == MBX_CONFIG_PORT) {
                              MAILBOX_t *slimmb;
                              volatile uint32_t slimword0;
                              /* Check real SLIM for any errors */
                              slimword0 = readl(phba->MBslimaddr);
                              slimmb = (MAILBOX_t *) & slimword0;
                              if (((slimword0 & OWN_CHIP) != OWN_CHIP)
                                  && slimmb->mbxStatus) {
                                    psli->sli_flag &=
                                        ~LPFC_SLI2_ACTIVE;
                                    word0 = slimword0;
                              }
                        }
                  } else {
                        /* First copy command data */
                        word0 = readl(phba->MBslimaddr);
                  }
                  /* Read the HBA Host Attention Register */
                  ha_copy = readl(phba->HAregaddr);
            }

            if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
                  /* copy results back to user */
                  lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
                              MAILBOX_CMD_SIZE);
            } else {
                  /* First copy command data */
                  lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
                                          MAILBOX_CMD_SIZE);
                  if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
                        pmbox->context2) {
                        lpfc_memcpy_from_slim((void *)pmbox->context2,
                              phba->MBslimaddr + DMP_RSP_OFFSET,
                                          mb->un.varDmp.word_cnt);
                  }
            }

            writel(HA_MBATT, phba->HAregaddr);
            readl(phba->HAregaddr); /* flush */

            psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
            status = mb->mbxStatus;
      }

      spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
      return (status);
}

static int
lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
                struct lpfc_iocbq * piocb)
{
      /* Insert the caller's iocb in the txq tail for later processing. */
      list_add_tail(&piocb->list, &pring->txq);
      pring->txq_cnt++;
      return (0);
}

static struct lpfc_iocbq *
lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
               struct lpfc_iocbq ** piocb)
{
      struct lpfc_iocbq * nextiocb;

      nextiocb = lpfc_sli_ringtx_get(phba, pring);
      if (!nextiocb) {
            nextiocb = *piocb;
            *piocb = NULL;
      }

      return nextiocb;
}

int
lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                struct lpfc_iocbq *piocb, uint32_t flag)
{
      struct lpfc_iocbq *nextiocb;
      IOCB_t *iocb;

      /*
       * We should never get an IOCB if we are in a < LINK_DOWN state
       */
      if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
            return IOCB_ERROR;

      /*
       * Check to see if we are blocking IOCB processing because of a
       * outstanding mbox command.
       */
      if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
            goto iocb_busy;

      if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
            /*
             * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
             * can be issued if the link is not up.
             */
            switch (piocb->iocb.ulpCommand) {
            case CMD_QUE_RING_BUF_CN:
            case CMD_QUE_RING_BUF64_CN:
                  /*
                   * For IOCBs, like QUE_RING_BUF, that have no rsp ring
                   * completion, iocb_cmpl MUST be 0.
                   */
                  if (piocb->iocb_cmpl)
                        piocb->iocb_cmpl = NULL;
                  /*FALLTHROUGH*/
            case CMD_CREATE_XRI_CR:
                  break;
            default:
                  goto iocb_busy;
            }

      /*
       * For FCP commands, we must be in a state where we can process link
       * attention events.
       */
      } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
               !(phba->sli.sli_flag & LPFC_PROCESS_LA)))
            goto iocb_busy;

      while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
             (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
            lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);

      if (iocb)
            lpfc_sli_update_ring(phba, pring);
      else
            lpfc_sli_update_full_ring(phba, pring);

      if (!piocb)
            return IOCB_SUCCESS;

      goto out_busy;

 iocb_busy:
      pring->stats.iocb_cmd_delay++;

 out_busy:

      if (!(flag & SLI_IOCB_RET_IOCB)) {
            lpfc_sli_ringtx_put(phba, pring, piocb);
            return IOCB_SUCCESS;
      }

      return IOCB_BUSY;
}

static int
lpfc_extra_ring_setup( struct lpfc_hba *phba)
{
      struct lpfc_sli *psli;
      struct lpfc_sli_ring *pring;

      psli = &phba->sli;

      /* Adjust cmd/rsp ring iocb entries more evenly */
      pring = &psli->ring[psli->fcp_ring];
      pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
      pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
      pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
      pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;

      pring = &psli->ring[1];
      pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
      pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
      pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
      pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;

      /* Setup default profile for this ring */
      pring->iotag_max = 4096;
      pring->num_mask = 1;
      pring->prt[0].profile = 0;      /* Mask 0 */
      pring->prt[0].rctl = FC_UNSOL_DATA;
      pring->prt[0].type = 5;
      pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
      return 0;
}

int
lpfc_sli_setup(struct lpfc_hba *phba)
{
      int i, totiocb = 0;
      struct lpfc_sli *psli = &phba->sli;
      struct lpfc_sli_ring *pring;

      psli->num_rings = MAX_CONFIGURED_RINGS;
      psli->sli_flag = 0;
      psli->fcp_ring = LPFC_FCP_RING;
      psli->next_ring = LPFC_FCP_NEXT_RING;
      psli->ip_ring = LPFC_IP_RING;

      psli->iocbq_lookup = NULL;
      psli->iocbq_lookup_len = 0;
      psli->last_iotag = 0;

      for (i = 0; i < psli->num_rings; i++) {
            pring = &psli->ring[i];
            switch (i) {
            case LPFC_FCP_RING:     /* ring 0 - FCP */
                  /* numCiocb and numRiocb are used in config_port */
                  pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
                  pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
                  pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
                  pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
                  pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
                  pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
                  pring->iotag_ctr = 0;
                  pring->iotag_max =
                      (phba->cfg_hba_queue_depth * 2);
                  pring->fast_iotag = pring->iotag_max;
                  pring->num_mask = 0;
                  break;
            case LPFC_IP_RING:      /* ring 1 - IP */
                  /* numCiocb and numRiocb are used in config_port */
                  pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
                  pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
                  pring->num_mask = 0;
                  break;
            case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
                  /* numCiocb and numRiocb are used in config_port */
                  pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
                  pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
                  pring->fast_iotag = 0;
                  pring->iotag_ctr = 0;
                  pring->iotag_max = 4096;
                  pring->num_mask = 4;
                  pring->prt[0].profile = 0;    /* Mask 0 */
                  pring->prt[0].rctl = FC_ELS_REQ;
                  pring->prt[0].type = FC_ELS_DATA;
                  pring->prt[0].lpfc_sli_rcv_unsol_event =
                      lpfc_els_unsol_event;
                  pring->prt[1].profile = 0;    /* Mask 1 */
                  pring->prt[1].rctl = FC_ELS_RSP;
                  pring->prt[1].type = FC_ELS_DATA;
                  pring->prt[1].lpfc_sli_rcv_unsol_event =
                      lpfc_els_unsol_event;
                  pring->prt[2].profile = 0;    /* Mask 2 */
                  /* NameServer Inquiry */
                  pring->prt[2].rctl = FC_UNSOL_CTL;
                  /* NameServer */
                  pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
                  pring->prt[2].lpfc_sli_rcv_unsol_event =
                      lpfc_ct_unsol_event;
                  pring->prt[3].profile = 0;    /* Mask 3 */
                  /* NameServer response */
                  pring->prt[3].rctl = FC_SOL_CTL;
                  /* NameServer */
                  pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
                  pring->prt[3].lpfc_sli_rcv_unsol_event =
                      lpfc_ct_unsol_event;
                  break;
            }
            totiocb += (pring->numCiocb + pring->numRiocb);
      }
      if (totiocb > MAX_SLI2_IOCB) {
            /* Too many cmd / rsp ring entries in SLI2 SLIM */
            lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                        "%d:0462 Too many cmd / rsp ring entries in "
                        "SLI2 SLIM Data: x%x x%x\n",
                        phba->brd_no, totiocb, MAX_SLI2_IOCB);
      }
      if (phba->cfg_multi_ring_support == 2)
            lpfc_extra_ring_setup(phba);

      return 0;
}

int
lpfc_sli_queue_setup(struct lpfc_hba * phba)
{
      struct lpfc_sli *psli;
      struct lpfc_sli_ring *pring;
      int i;

      psli = &phba->sli;
      spin_lock_irq(phba->host->host_lock);
      INIT_LIST_HEAD(&psli->mboxq);
      /* Initialize list headers for txq and txcmplq as double linked lists */
      for (i = 0; i < psli->num_rings; i++) {
            pring = &psli->ring[i];
            pring->ringno = i;
            pring->next_cmdidx  = 0;
            pring->local_getidx = 0;
            pring->cmdidx = 0;
            INIT_LIST_HEAD(&pring->txq);
            INIT_LIST_HEAD(&pring->txcmplq);
            INIT_LIST_HEAD(&pring->iocb_continueq);
            INIT_LIST_HEAD(&pring->postbufq);
      }
      spin_unlock_irq(phba->host->host_lock);
      return (1);
}

int
lpfc_sli_hba_down(struct lpfc_hba * phba)
{
      struct lpfc_sli *psli;
      struct lpfc_sli_ring *pring;
      LPFC_MBOXQ_t *pmb;
      struct lpfc_iocbq *iocb, *next_iocb;
      IOCB_t *icmd = NULL;
      int i;
      unsigned long flags = 0;

      psli = &phba->sli;
      lpfc_hba_down_prep(phba);

      spin_lock_irqsave(phba->host->host_lock, flags);

      for (i = 0; i < psli->num_rings; i++) {
            pring = &psli->ring[i];
            pring->flag |= LPFC_DEFERRED_RING_EVENT;

            /*
             * Error everything on the txq since these iocbs have not been
             * given to the FW yet.
             */
            pring->txq_cnt = 0;

            list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
                  list_del_init(&iocb->list);
                  if (iocb->iocb_cmpl) {
                        icmd = &iocb->iocb;
                        icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
                        icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
                        spin_unlock_irqrestore(phba->host->host_lock,
                                           flags);
                        (iocb->iocb_cmpl) (phba, iocb, iocb);
                        spin_lock_irqsave(phba->host->host_lock, flags);
                  } else
                        lpfc_sli_release_iocbq(phba, iocb);
            }

            INIT_LIST_HEAD(&(pring->txq));

      }

      spin_unlock_irqrestore(phba->host->host_lock, flags);

      /* Return any active mbox cmds */
      del_timer_sync(&psli->mbox_tmo);
      spin_lock_irqsave(phba->host->host_lock, flags);
      phba->work_hba_events &= ~WORKER_MBOX_TMO;
      if (psli->mbox_active) {
            pmb = psli->mbox_active;
            pmb->mb.mbxStatus = MBX_NOT_FINISHED;
            if (pmb->mbox_cmpl) {
                  spin_unlock_irqrestore(phba->host->host_lock, flags);
                  pmb->mbox_cmpl(phba,pmb);
                  spin_lock_irqsave(phba->host->host_lock, flags);
            }
      }
      psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
      psli->mbox_active = NULL;

      /* Return any pending mbox cmds */
      while ((pmb = lpfc_mbox_get(phba)) != NULL) {
            pmb->mb.mbxStatus = MBX_NOT_FINISHED;
            if (pmb->mbox_cmpl) {
                  spin_unlock_irqrestore(phba->host->host_lock, flags);
                  pmb->mbox_cmpl(phba,pmb);
                  spin_lock_irqsave(phba->host->host_lock, flags);
            }
      }

      INIT_LIST_HEAD(&psli->mboxq);

      spin_unlock_irqrestore(phba->host->host_lock, flags);

      return 1;
}

void
lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
{
      uint32_t *src = srcp;
      uint32_t *dest = destp;
      uint32_t ldata;
      int i;

      for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
            ldata = *src;
            ldata = le32_to_cpu(ldata);
            *dest = ldata;
            src++;
            dest++;
      }
}

int
lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
                   struct lpfc_dmabuf * mp)
{
      /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
         later */
      list_add_tail(&mp->list, &pring->postbufq);

      pring->postbufq_cnt++;
      return 0;
}


struct lpfc_dmabuf *
lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                   dma_addr_t phys)
{
      struct lpfc_dmabuf *mp, *next_mp;
      struct list_head *slp = &pring->postbufq;

      /* Search postbufq, from the begining, looking for a match on phys */
      list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
            if (mp->phys == phys) {
                  list_del_init(&mp->list);
                  pring->postbufq_cnt--;
                  return mp;
            }
      }

      lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
                  "%d:0410 Cannot find virtual addr for mapped buf on "
                  "ring %d Data x%llx x%p x%p x%x\n",
                  phba->brd_no, pring->ringno, (unsigned long long)phys,
                  slp->next, slp->prev, pring->postbufq_cnt);
      return NULL;
}

static void
lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
                     struct lpfc_iocbq * rspiocb)
{
      struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
      /* Free the resources associated with the ELS_REQUEST64 IOCB the driver
       * just aborted.
       * In this case, context2  = cmd,  context2->next = rsp, context3 = bpl
       */
      if (cmdiocb->context2) {
            buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;

            /* Free the response IOCB before completing the abort
               command.  */
            buf_ptr = NULL;
            list_remove_head((&buf_ptr1->list), buf_ptr,
                         struct lpfc_dmabuf, list);
            if (buf_ptr) {
                  lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
                  kfree(buf_ptr);
            }
            lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
            kfree(buf_ptr1);
      }

      if (cmdiocb->context3) {
            buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
            lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
            kfree(buf_ptr);
      }

      lpfc_sli_release_iocbq(phba, cmdiocb);
      return;
}

int
lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
                       struct lpfc_sli_ring * pring,
                       struct lpfc_iocbq * cmdiocb)
{
      struct lpfc_iocbq *abtsiocbp;
      IOCB_t *icmd = NULL;
      IOCB_t *iabt = NULL;

      /* issue ABTS for this IOCB based on iotag */
      abtsiocbp = lpfc_sli_get_iocbq(phba);
      if (abtsiocbp == NULL)
            return 0;

      iabt = &abtsiocbp->iocb;
      icmd = &cmdiocb->iocb;
      switch (icmd->ulpCommand) {
      case CMD_ELS_REQUEST64_CR:
            /* Even though we abort the ELS command, the firmware may access
             * the BPL or other resources before it processes our
             * ABORT_MXRI64. Thus we must delay reusing the cmdiocb
             * resources till the actual abort request completes.
             */
            abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
            abtsiocbp->context2 = cmdiocb->context2;
            abtsiocbp->context3 = cmdiocb->context3;
            cmdiocb->context2 = NULL;
            cmdiocb->context3 = NULL;
            abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
            break;
      default:
            lpfc_sli_release_iocbq(phba, abtsiocbp);
            return 0;
      }

      iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
      iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;

      iabt->ulpLe = 1;
      iabt->ulpClass = CLASS3;
      iabt->ulpCommand = CMD_ABORT_MXRI64_CN;

      if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
            lpfc_sli_release_iocbq(phba, abtsiocbp);
            return 0;
      }

      return 1;
}

static int
lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, uint16_t tgt_id,
                     uint64_t lun_id, uint32_t ctx,
                     lpfc_ctx_cmd ctx_cmd)
{
      struct lpfc_scsi_buf *lpfc_cmd;
      struct scsi_cmnd *cmnd;
      int rc = 1;

      if (!(iocbq->iocb_flag &  LPFC_IO_FCP))
            return rc;

      lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
      cmnd = lpfc_cmd->pCmd;

      if (cmnd == NULL)
            return rc;

      switch (ctx_cmd) {
      case LPFC_CTX_LUN:
            if ((cmnd->device->id == tgt_id) &&
                (cmnd->device->lun == lun_id))
                  rc = 0;
            break;
      case LPFC_CTX_TGT:
            if (cmnd->device->id == tgt_id)
                  rc = 0;
            break;
      case LPFC_CTX_CTX:
            if (iocbq->iocb.ulpContext == ctx)
                  rc = 0;
            break;
      case LPFC_CTX_HOST:
            rc = 0;
            break;
      default:
            printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
                  __FUNCTION__, ctx_cmd);
            break;
      }

      return rc;
}

int
lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
            uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
{
      struct lpfc_iocbq *iocbq;
      int sum, i;

      for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
            iocbq = phba->sli.iocbq_lookup[i];

            if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
                                    0, ctx_cmd) == 0)
                  sum++;
      }

      return sum;
}

void
lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
                     struct lpfc_iocbq * rspiocb)
{
      spin_lock_irq(phba->host->host_lock);
      lpfc_sli_release_iocbq(phba, cmdiocb);
      spin_unlock_irq(phba->host->host_lock);
      return;
}

int
lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
                uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
                lpfc_ctx_cmd abort_cmd)
{
      struct lpfc_iocbq *iocbq;
      struct lpfc_iocbq *abtsiocb;
      IOCB_t *cmd = NULL;
      int errcnt = 0, ret_val = 0;
      int i;

      for (i = 1; i <= phba->sli.last_iotag; i++) {
            iocbq = phba->sli.iocbq_lookup[i];

            if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
                                    0, abort_cmd) != 0)
                  continue;

            /* issue ABTS for this IOCB based on iotag */
            abtsiocb = lpfc_sli_get_iocbq(phba);
            if (abtsiocb == NULL) {
                  errcnt++;
                  continue;
            }

            cmd = &iocbq->iocb;
            abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
            abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
            abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
            abtsiocb->iocb.ulpLe = 1;
            abtsiocb->iocb.ulpClass = cmd->ulpClass;

            if (phba->hba_state >= LPFC_LINK_UP)
                  abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
            else
                  abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;

            /* Setup callback routine and issue the command. */
            abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
            ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
            if (ret_val == IOCB_ERROR) {
                  lpfc_sli_release_iocbq(phba, abtsiocb);
                  errcnt++;
                  continue;
            }
      }

      return errcnt;
}

static void
lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
                  struct lpfc_iocbq *cmdiocbq,
                  struct lpfc_iocbq *rspiocbq)
{
      wait_queue_head_t *pdone_q;
      unsigned long iflags;

      spin_lock_irqsave(phba->host->host_lock, iflags);
      cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
      if (cmdiocbq->context2 && rspiocbq)
            memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
                   &rspiocbq->iocb, sizeof(IOCB_t));

      pdone_q = cmdiocbq->context_un.wait_queue;
      spin_unlock_irqrestore(phba->host->host_lock, iflags);
      if (pdone_q)
            wake_up(pdone_q);
      return;
}

/*
 * Issue the caller's iocb and wait for its completion, but no longer than the
 * caller's timeout.  Note that iocb_flags is cleared before the
 * lpfc_sli_issue_call since the wake routine sets a unique value and by
 * definition this is a wait function.
 */
int
lpfc_sli_issue_iocb_wait(struct lpfc_hba * phba,
                   struct lpfc_sli_ring * pring,
                   struct lpfc_iocbq * piocb,
                   struct lpfc_iocbq * prspiocbq,
                   uint32_t timeout)
{
      DECLARE_WAIT_QUEUE_HEAD(done_q);
      long timeleft, timeout_req = 0;
      int retval = IOCB_SUCCESS;
      uint32_t creg_val;

      /*
       * If the caller has provided a response iocbq buffer, then context2
       * is NULL or its an error.
       */
      if (prspiocbq) {
            if (piocb->context2)
                  return IOCB_ERROR;
            piocb->context2 = prspiocbq;
      }

      piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
      piocb->context_un.wait_queue = &done_q;
      piocb->iocb_flag &= ~LPFC_IO_WAKE;

      if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
            creg_val = readl(phba->HCregaddr);
            creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
            writel(creg_val, phba->HCregaddr);
            readl(phba->HCregaddr); /* flush */
      }

      retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
      if (retval == IOCB_SUCCESS) {
            timeout_req = timeout * HZ;
            spin_unlock_irq(phba->host->host_lock);
            timeleft = wait_event_timeout(done_q,
                        piocb->iocb_flag & LPFC_IO_WAKE,
                        timeout_req);
            spin_lock_irq(phba->host->host_lock);

            if (timeleft == 0) {
                  lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                              "%d:0338 IOCB wait timeout error - no "
                              "wake response Data x%x\n",
                              phba->brd_no, timeout);
                  retval = IOCB_TIMEDOUT;
            } else if (!(piocb->iocb_flag & LPFC_IO_WAKE)) {
                  lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
                              "%d:0330 IOCB wake NOT set, "
                              "Data x%x x%lx\n", phba->brd_no,
                              timeout, (timeleft / jiffies));
                  retval = IOCB_TIMEDOUT;
            } else {
                  lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                              "%d:0331 IOCB wake signaled\n",
                              phba->brd_no);
            }
      } else {
            lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
                        "%d:0332 IOCB wait issue failed, Data x%x\n",
                        phba->brd_no, retval);
            retval = IOCB_ERROR;
      }

      if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
            creg_val = readl(phba->HCregaddr);
            creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
            writel(creg_val, phba->HCregaddr);
            readl(phba->HCregaddr); /* flush */
      }

      if (prspiocbq)
            piocb->context2 = NULL;

      piocb->context_un.wait_queue = NULL;
      piocb->iocb_cmpl = NULL;
      return retval;
}

int
lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
                   uint32_t timeout)
{
      DECLARE_WAIT_QUEUE_HEAD(done_q);
      DECLARE_WAITQUEUE(wq_entry, current);
      uint32_t timeleft = 0;
      int retval;

      /* The caller must leave context1 empty. */
      if (pmboxq->context1 != 0) {
            return (MBX_NOT_FINISHED);
      }

      /* setup wake call as IOCB callback */
      pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
      /* setup context field to pass wait_queue pointer to wake function  */
      pmboxq->context1 = &done_q;

      /* start to sleep before we wait, to avoid races */
      set_current_state(TASK_INTERRUPTIBLE);
      add_wait_queue(&done_q, &wq_entry);

      /* now issue the command */
      retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);

      if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
            timeleft = schedule_timeout(timeout * HZ);
            pmboxq->context1 = NULL;
            /* if schedule_timeout returns 0, we timed out and were not
               woken up */
            if ((timeleft == 0) || signal_pending(current))
                  retval = MBX_TIMEOUT;
            else
                  retval = MBX_SUCCESS;
      }


      set_current_state(TASK_RUNNING);
      remove_wait_queue(&done_q, &wq_entry);
      return retval;
}

int
lpfc_sli_flush_mbox_queue(struct lpfc_hba * phba)
{
      int i = 0;

      while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE && !phba->stopped) {
            if (i++ > LPFC_MBOX_TMO * 1000)
                  return 1;

            if (lpfc_sli_handle_mb_event(phba) == 0)
                  i = 0;

            msleep(1);
      }

      return (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) ? 1 : 0;
}

irqreturn_t
lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
{
      struct lpfc_hba *phba;
      uint32_t ha_copy;
      uint32_t work_ha_copy;
      unsigned long status;
      int i;
      uint32_t control;

      /*
       * Get the driver's phba structure from the dev_id and
       * assume the HBA is not interrupting.
       */
      phba = (struct lpfc_hba *) dev_id;

      if (unlikely(!phba))
            return IRQ_NONE;

      phba->sli.slistat.sli_intr++;

      /*
       * Call the HBA to see if it is interrupting.  If not, don't claim
       * the interrupt
       */

      /* Ignore all interrupts during initialization. */
      if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
            return IRQ_NONE;

      /*
       * Read host attention register to determine interrupt source
       * Clear Attention Sources, except Error Attention (to
       * preserve status) and Link Attention
       */
      spin_lock(phba->host->host_lock);
      ha_copy = readl(phba->HAregaddr);
      writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
      readl(phba->HAregaddr); /* flush */
      spin_unlock(phba->host->host_lock);

      if (unlikely(!ha_copy))
            return IRQ_NONE;

      work_ha_copy = ha_copy & phba->work_ha_mask;

      if (unlikely(work_ha_copy)) {
            if (work_ha_copy & HA_LATT) {
                  if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
                        /*
                         * Turn off Link Attention interrupts
                         * until CLEAR_LA done
                         */
                        spin_lock(phba->host->host_lock);
                        phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
                        control = readl(phba->HCregaddr);
                        control &= ~HC_LAINT_ENA;
                        writel(control, phba->HCregaddr);
                        readl(phba->HCregaddr); /* flush */
                        spin_unlock(phba->host->host_lock);
                  }
                  else
                        work_ha_copy &= ~HA_LATT;
            }

            if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
                  for (i = 0; i < phba->sli.num_rings; i++) {
                        if (work_ha_copy & (HA_RXATT << (4*i))) {
                              /*
                               * Turn off Slow Rings interrupts
                               */
                              spin_lock(phba->host->host_lock);
                              control = readl(phba->HCregaddr);
                              control &= ~(HC_R0INT_ENA << i);
                              writel(control, phba->HCregaddr);
                              readl(phba->HCregaddr); /* flush */
                              spin_unlock(phba->host->host_lock);
                        }
                  }
            }

            if (work_ha_copy & HA_ERATT) {
                  phba->hba_state = LPFC_HBA_ERROR;
                  /*
                   * There was a link/board error.  Read the
                   * status register to retrieve the error event
                   * and process it.
                   */
                  phba->sli.slistat.err_attn_event++;
                  /* Save status info */
                  phba->work_hs = readl(phba->HSregaddr);
                  phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
                  phba->work_status[1] = readl(phba->MBslimaddr + 0xac);

                  /* Clear Chip error bit */
                  writel(HA_ERATT, phba->HAregaddr);
                  readl(phba->HAregaddr); /* flush */
                  phba->stopped = 1;
            }

            spin_lock(phba->host->host_lock);
            phba->work_ha |= work_ha_copy;
            if (phba->work_wait)
                  wake_up(phba->work_wait);
            spin_unlock(phba->host->host_lock);
      }

      ha_copy &= ~(phba->work_ha_mask);

      /*
       * Process all events on FCP ring.  Take the optimized path for
       * FCP IO.  Any other IO is slow path and is handled by
       * the worker thread.
       */
      status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
      status >>= (4*LPFC_FCP_RING);
      if (status & HA_RXATT)
            lpfc_sli_handle_fast_ring_event(phba,
                                    &phba->sli.ring[LPFC_FCP_RING],
                                    status);
      return IRQ_HANDLED;

} /* lpfc_intr_handler */

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