diff options
| author | Po-Wen Kao <powen.kao@mediatek.com> | 2023-06-12 11:58:10 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-06-16 19:04:31 +0300 |
| commit | aa9d5d0015a8b73aa557ab45933efe9cb68a3784 (patch) | |
| tree | b4d39515049cd3149678e5f6f3717757e1b9ac0c /drivers/ufs | |
| parent | c4ad4f2e6646dcd29a1ff7ff682bf650a67b0335 (diff) | |
| download | linux-aa9d5d0015a8b73aa557ab45933efe9cb68a3784.tar.xz | |
scsi: ufs: core: Add host quirk UFSHCD_QUIRK_MCQ_BROKEN_RTC
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>
Diffstat (limited to 'drivers/ufs')
| -rw-r--r-- | drivers/ufs/core/ufs-mcq.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index 7b78cf2e0f53..420ae05b1078 100644 --- a/drivers/ufs/core/ufs-mcq.c +++ b/drivers/ufs/core/ufs-mcq.c @@ -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); |