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scsi: ufs: core: Rework ufshcd_mcq_compl_pending_transfer()

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Replace a tag loop with blk_mq_tagset_busy_iter(). This patch prepares
for removing the hba->lrb[] array.

Reviewed-by: Avri Altman <avri.altman@sandisk.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20251031204029.2883185-16-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche
2025-10-31 13:39:23 -07:00
committed by Martin K. Petersen
parent f59568f4e2
commit 63a5b959c8
1 changed files with 46 additions and 34 deletions
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80
drivers/ufs/core/ufshcd.c
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@@ -5725,6 +5725,48 @@ static int ufshcd_poll(struct Scsi_Host *shost, unsigned int queue_num)
return completed_reqs != 0;
}
static bool ufshcd_mcq_force_compl_one(struct request *rq, void *priv)
{
struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
struct scsi_device *sdev = rq->q->queuedata;
struct Scsi_Host *shost = sdev->host;
struct ufs_hba *hba = shost_priv(shost);
struct ufshcd_lrb *lrbp = &hba->lrb[rq->tag];
struct ufs_hw_queue *hwq = ufshcd_mcq_req_to_hwq(hba, rq);
if (!hwq)
return true;
ufshcd_mcq_compl_all_cqes_lock(hba, hwq);
/*
* For those cmds of which the cqes are not present in the cq, complete
* them explicitly.
*/
scoped_guard(spinlock_irqsave, &hwq->cq_lock) {
if (!test_bit(SCMD_STATE_COMPLETE, &cmd->state)) {
set_host_byte(cmd, DID_REQUEUE);
ufshcd_release_scsi_cmd(hba, lrbp);
scsi_done(cmd);
}
}
return true;
}
static bool ufshcd_mcq_compl_one(struct request *rq, void *priv)
{
struct scsi_device *sdev = rq->q->queuedata;
struct Scsi_Host *shost = sdev->host;
struct ufs_hba *hba = shost_priv(shost);
struct ufs_hw_queue *hwq = ufshcd_mcq_req_to_hwq(hba, rq);
if (hwq)
ufshcd_mcq_poll_cqe_lock(hba, hwq);
return true;
}
/**
* ufshcd_mcq_compl_pending_transfer - MCQ mode function. It is
* invoked from the error handler context or ufshcd_host_reset_and_restore()
@@ -5739,40 +5781,10 @@ static int ufshcd_poll(struct Scsi_Host *shost, unsigned int queue_num)
static void ufshcd_mcq_compl_pending_transfer(struct ufs_hba *hba,
bool force_compl)
{
struct ufs_hw_queue *hwq;
struct ufshcd_lrb *lrbp;
struct scsi_cmnd *cmd;
unsigned long flags;
int tag;
for (tag = 0; tag < hba->nutrs; tag++) {
lrbp = &hba->lrb[tag];
cmd = lrbp->cmd;
if (!ufshcd_cmd_inflight(cmd) ||
test_bit(SCMD_STATE_COMPLETE, &cmd->state))
continue;
hwq = ufshcd_mcq_req_to_hwq(hba, scsi_cmd_to_rq(cmd));
if (!hwq)
continue;
if (force_compl) {
ufshcd_mcq_compl_all_cqes_lock(hba, hwq);
/*
* For those cmds of which the cqes are not present
* in the cq, complete them explicitly.
*/
spin_lock_irqsave(&hwq->cq_lock, flags);
if (cmd && !test_bit(SCMD_STATE_COMPLETE, &cmd->state)) {
set_host_byte(cmd, DID_REQUEUE);
ufshcd_release_scsi_cmd(hba, lrbp);
scsi_done(cmd);
}
spin_unlock_irqrestore(&hwq->cq_lock, flags);
} else {
ufshcd_mcq_poll_cqe_lock(hba, hwq);
}
}
blk_mq_tagset_busy_iter(&hba->host->tag_set,
force_compl ? ufshcd_mcq_force_compl_one :
ufshcd_mcq_compl_one,
NULL);
}
/**