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scsi: ufs: core: Add host quirk UFSHCD_QUIRK_MCQ_BROKEN_RTC

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Some hosts do not implement SQ Run Time Command (SQRTC) register, thus we
need this quirk to skip the related flow.

Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
Link: https://lore.kernel.org/r/20230612085817.12275-3-powen.kao@mediatek.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Po-Wen Kao 2023-06-12 16:58:10 +08:00 committed by Martin K. Petersen
parent c4ad4f2e66
commit aa9d5d0015
2 changed files with 18 additions and 0 deletions
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12
drivers/ufs/core/ufs-mcq.c
View File

@ -451,6 +451,9 @@ static int ufshcd_mcq_sq_stop(struct ufs_hba *hba, struct ufs_hw_queue *hwq)
u32 id = hwq->id, val;
int err;
if (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_RTC)
return -ETIMEDOUT;
writel(SQ_STOP, mcq_opr_base(hba, OPR_SQD, id) + REG_SQRTC);
reg = mcq_opr_base(hba, OPR_SQD, id) + REG_SQRTS;
err = read_poll_timeout(readl, val, val & SQ_STS, 20,
@ -467,6 +470,9 @@ static int ufshcd_mcq_sq_start(struct ufs_hba *hba, struct ufs_hw_queue *hwq)
u32 id = hwq->id, val;
int err;
if (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_RTC)
return -ETIMEDOUT;
writel(SQ_START, mcq_opr_base(hba, OPR_SQD, id) + REG_SQRTC);
reg = mcq_opr_base(hba, OPR_SQD, id) + REG_SQRTS;
err = read_poll_timeout(readl, val, !(val & SQ_STS), 20,
@ -494,6 +500,9 @@ int ufshcd_mcq_sq_cleanup(struct ufs_hba *hba, int task_tag)
u32 nexus, id, val;
int err;
if (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_RTC)
return -ETIMEDOUT;
if (task_tag != hba->nutrs - UFSHCD_NUM_RESERVED) {
if (!cmd)
return -EINVAL;
@ -576,6 +585,9 @@ static bool ufshcd_mcq_sqe_search(struct ufs_hba *hba,
u64 addr, match;
u32 sq_head_slot;
if (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_RTC)
return true;
mutex_lock(&hwq->sq_mutex);
ufshcd_mcq_sq_stop(hba, hwq);

6
include/ufs/ufshcd.h
View File

@ -617,6 +617,12 @@ enum ufshcd_quirks {
* Enable this quirk will disable CQES and use per queue interrupt.
*/
UFSHCD_QUIRK_MCQ_BROKEN_INTR = 1 << 20,
/*
* Some host does not implement SQ Run Time Command (SQRTC) register
* thus need this quirk to skip related flow.
*/
UFSHCD_QUIRK_MCQ_BROKEN_RTC = 1 << 21,
};
enum ufshcd_caps {