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FROMLIST: scsi: ufs: core: Add host quirk UFSHCD_QUIRK_MCQ_BROKEN_RTC

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Some host does not implement SQ Run Time Command (SQRTC) register
thus need this quirk to skip related flow.

Bug: 267974767
Link: https://lore.kernel.org/all/20230612085817.12275-3-powen.kao@mediatek.com/
Signed-off-by: Po-Wen Kao <powen.kao@mediatek.com>
Change-Id: I52192e065f2ac63f0c77b2cb16ae1226d1e7cd9a
This commit is contained in:
Po-Wen Kao 2023-06-12 14:06:56 +08:00 • committed by Akilesh Kailash
parent 27b569b568
commit 0171df9359
2 changed files with 18 additions and 0 deletions
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12
drivers/ufs/core/ufs-mcq.c
View file

@ -468,6 +468,9 @@ 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,
@ -484,6 +487,9 @@ 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,
@ -511,6 +517,9 @@ 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;
@ -593,6 +602,9 @@ 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

@ -623,6 +623,12 @@ 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_android_quirks {