[SCSI] lpfc: Replace lpfc_sli_issue_iocb_wait_high_priority
Replace lpfc_sli_issue_iocb_wait_high_priority with lpfc_sli_issue_iocb_wait. Simplify code paths, as there really wasn't a "priority" Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
parent
604a3e3042
commit
68876920f4
4 changed files with 89 additions and 90 deletions
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@ -180,15 +180,11 @@ struct lpfc_nodelist *lpfc_findnode_did(struct lpfc_hba * phba, uint32_t order,
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int lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
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uint32_t timeout);
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int lpfc_sli_issue_iocb_wait_high_priority(struct lpfc_hba * phba,
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struct lpfc_sli_ring * pring,
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struct lpfc_iocbq * piocb,
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uint32_t flag,
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struct lpfc_iocbq * prspiocbq,
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uint32_t timeout);
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void lpfc_sli_wake_iocb_high_priority(struct lpfc_hba * phba,
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struct lpfc_iocbq * queue1,
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struct lpfc_iocbq * queue2);
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int lpfc_sli_issue_iocb_wait(struct lpfc_hba * phba,
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struct lpfc_sli_ring * pring,
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struct lpfc_iocbq * piocb,
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struct lpfc_iocbq * prspiocbq,
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uint32_t timeout);
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void lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba,
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struct lpfc_iocbq * cmdiocb,
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struct lpfc_iocbq * rspiocb);
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@ -637,12 +637,9 @@ lpfc_scsi_tgt_reset(struct lpfc_scsi_buf * lpfc_cmd, struct lpfc_hba * phba)
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if (!iocbqrsp)
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return FAILED;
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iocbq->iocb_flag |= LPFC_IO_POLL;
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ret = lpfc_sli_issue_iocb_wait_high_priority(phba,
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&phba->sli.ring[phba->sli.fcp_ring],
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iocbq, SLI_IOCB_HIGH_PRIORITY,
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iocbqrsp,
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lpfc_cmd->timeout);
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ret = lpfc_sli_issue_iocb_wait(phba,
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&phba->sli.ring[phba->sli.fcp_ring],
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iocbq, iocbqrsp, lpfc_cmd->timeout);
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if (ret != IOCB_SUCCESS) {
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lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
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ret = FAILED;
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@ -922,7 +919,6 @@ __lpfc_reset_lun_handler(struct scsi_cmnd *cmnd)
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{
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struct Scsi_Host *shost = cmnd->device->host;
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struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0];
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struct lpfc_sli *psli = &phba->sli;
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struct lpfc_scsi_buf *lpfc_cmd = NULL;
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struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list;
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struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
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@ -969,12 +965,9 @@ __lpfc_reset_lun_handler(struct scsi_cmnd *cmnd)
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if (iocbqrsp == NULL)
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goto out_free_scsi_buf;
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iocbq->iocb_flag |= LPFC_IO_POLL;
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iocbq->iocb_cmpl = lpfc_sli_wake_iocb_high_priority;
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ret = lpfc_sli_issue_iocb_wait_high_priority(phba,
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&phba->sli.ring[psli->fcp_ring],
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iocbq, 0, iocbqrsp, 60);
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ret = lpfc_sli_issue_iocb_wait(phba,
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&phba->sli.ring[phba->sli.fcp_ring],
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iocbq, iocbqrsp, lpfc_cmd->timeout);
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if (ret == IOCB_SUCCESS)
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ret = SUCCESS;
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@ -839,9 +839,6 @@ lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
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spin_lock_irqsave(phba->host->host_lock, iflag);
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}
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else {
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if (cmdiocbp->iocb_flag & LPFC_IO_POLL)
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rc = 0;
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spin_unlock_irqrestore(phba->host->host_lock,
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iflag);
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(cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
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@ -874,6 +871,7 @@ lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
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saveq->iocb.ulpContext);
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}
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}
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spin_unlock_irqrestore(phba->host->host_lock, iflag);
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return rc;
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}
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@ -2592,84 +2590,99 @@ lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
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return errcnt;
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}
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void
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lpfc_sli_wake_iocb_high_priority(struct lpfc_hba * phba,
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struct lpfc_iocbq * queue1,
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struct lpfc_iocbq * queue2)
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static void
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lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
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struct lpfc_iocbq *cmdiocbq,
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struct lpfc_iocbq *rspiocbq)
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{
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struct lpfc_iocbq *save_iocbq = queue1->context2;
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if (save_iocbq && queue2)
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memcpy(&save_iocbq->iocb, &queue2->iocb, sizeof(queue2->iocb));
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wait_queue_head_t *pdone_q;
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unsigned long iflags;
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/* The waiter is looking for LPFC_IO_HIPRI bit to be set
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as a signal to wake up */
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queue1->iocb_flag |= LPFC_IO_HIPRI;
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spin_lock_irqsave(phba->host->host_lock, iflags);
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cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
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if (cmdiocbq->context2 && rspiocbq)
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memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
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&rspiocbq->iocb, sizeof(IOCB_t));
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pdone_q = cmdiocbq->context_un.wait_queue;
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spin_unlock_irqrestore(phba->host->host_lock, iflags);
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if (pdone_q)
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wake_up(pdone_q);
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return;
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}
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/*
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* Issue the caller's iocb and wait for its completion, but no longer than the
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* caller's timeout. Note that iocb_flags is cleared before the
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* lpfc_sli_issue_call since the wake routine sets a unique value and by
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* definition this is a wait function.
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*/
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int
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lpfc_sli_issue_iocb_wait_high_priority(struct lpfc_hba * phba,
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struct lpfc_sli_ring * pring,
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struct lpfc_iocbq * piocb,
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uint32_t flag,
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struct lpfc_iocbq * prspiocbq,
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uint32_t timeout)
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lpfc_sli_issue_iocb_wait(struct lpfc_hba * phba,
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struct lpfc_sli_ring * pring,
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struct lpfc_iocbq * piocb,
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struct lpfc_iocbq * prspiocbq,
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uint32_t timeout)
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{
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int j, delay_time, retval = IOCB_ERROR;
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/* The caller must left context1 empty. */
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if (piocb->context_un.hipri_wait_queue != 0) {
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return IOCB_ERROR;
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}
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DECLARE_WAIT_QUEUE_HEAD(done_q);
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long timeleft, timeout_req = 0;
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int retval = IOCB_SUCCESS;
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/*
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* If the caller has provided a response iocbq buffer, context2 must
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* be NULL or its an error.
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* If the caller has provided a response iocbq buffer, then context2
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* is NULL or its an error.
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*/
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if (prspiocbq && piocb->context2) {
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return IOCB_ERROR;
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if (prspiocbq) {
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if (piocb->context2)
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return IOCB_ERROR;
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piocb->context2 = prspiocbq;
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}
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piocb->context2 = prspiocbq;
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piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
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piocb->context_un.wait_queue = &done_q;
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piocb->iocb_flag &= ~LPFC_IO_WAKE;
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/* Setup callback routine and issue the command. */
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piocb->iocb_cmpl = lpfc_sli_wake_iocb_high_priority;
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retval = lpfc_sli_issue_iocb(phba, pring, piocb,
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flag | SLI_IOCB_HIGH_PRIORITY);
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if (retval != IOCB_SUCCESS) {
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piocb->context2 = NULL;
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return IOCB_ERROR;
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}
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retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
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if (retval == IOCB_SUCCESS) {
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timeout_req = timeout * HZ;
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spin_unlock_irq(phba->host->host_lock);
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timeleft = wait_event_timeout(done_q,
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piocb->iocb_flag & LPFC_IO_WAKE,
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timeout_req);
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spin_lock_irq(phba->host->host_lock);
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/*
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* This high-priority iocb was sent out-of-band. Poll for its
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* completion rather than wait for a signal. Note that the host_lock
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* is held by the midlayer and must be released here to allow the
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* interrupt handlers to complete the IO and signal this routine via
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* the iocb_flag.
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* Also, the delay_time is computed to be one second longer than
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* the scsi command timeout to give the FW time to abort on
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* timeout rather than the driver just giving up. Typically,
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* the midlayer does not specify a time for this command so the
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* driver is free to enforce its own timeout.
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*/
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delay_time = ((timeout + 1) * 1000) >> 6;
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retval = IOCB_ERROR;
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spin_unlock_irq(phba->host->host_lock);
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for (j = 0; j < 64; j++) {
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msleep(delay_time);
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if (piocb->iocb_flag & LPFC_IO_HIPRI) {
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piocb->iocb_flag &= ~LPFC_IO_HIPRI;
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retval = IOCB_SUCCESS;
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break;
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if (timeleft == 0) {
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lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
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"%d:0329 IOCB wait timeout error - no "
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"wake response Data x%x\n",
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phba->brd_no, timeout);
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retval = IOCB_TIMEDOUT;
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} else if (!(piocb->iocb_flag & LPFC_IO_WAKE)) {
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lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
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"%d:0330 IOCB wake NOT set, "
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"Data x%x x%lx\n", phba->brd_no,
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timeout, (timeleft / jiffies));
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retval = IOCB_TIMEDOUT;
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} else {
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lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
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"%d:0331 IOCB wake signaled\n",
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phba->brd_no);
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}
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} else {
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lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
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"%d:0332 IOCB wait issue failed, Data x%x\n",
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phba->brd_no, retval);
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retval = IOCB_ERROR;
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}
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spin_lock_irq(phba->host->host_lock);
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piocb->context2 = NULL;
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if (prspiocbq)
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piocb->context2 = NULL;
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piocb->context_un.wait_queue = NULL;
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piocb->iocb_cmpl = NULL;
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return retval;
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}
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int
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lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
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uint32_t timeout)
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@ -39,10 +39,8 @@ struct lpfc_iocbq {
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IOCB_t iocb; /* IOCB cmd */
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uint8_t retry; /* retry counter for IOCB cmd - if needed */
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uint8_t iocb_flag;
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#define LPFC_IO_POLL 1 /* Polling mode iocb */
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#define LPFC_IO_LIBDFC 2 /* libdfc iocb */
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#define LPFC_IO_WAIT 4
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#define LPFC_IO_HIPRI 8 /* High Priority Queue signal flag */
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#define LPFC_IO_LIBDFC 1 /* libdfc iocb */
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#define LPFC_IO_WAKE 2 /* High Priority Queue signal flag */
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uint8_t abort_count;
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uint8_t rsvd2;
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@ -51,8 +49,7 @@ struct lpfc_iocbq {
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void *context2; /* caller context information */
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void *context3; /* caller context information */
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union {
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wait_queue_head_t *hipri_wait_queue; /* High Priority Queue wait
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queue */
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wait_queue_head_t *wait_queue;
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struct lpfc_iocbq *rsp_iocb;
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struct lpfcMboxq *mbox;
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} context_un;
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