diff options
| author | Peter Wang <peter.wang@mediatek.com> | 2026-02-10 10:17:30 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2026-02-24 21:41:54 +0300 |
| commit | f707860ebc84dd07148c3855e2f0fa9f41a3ed4a (patch) | |
| tree | 293df7dd66a4df2c5b43739ee4f1a02daac5a072 | |
| parent | 3abe4113e784b4a1135fe0e89828afecbfebf862 (diff) | |
| download | linux-f707860ebc84dd07148c3855e2f0fa9f41a3ed4a.tar.xz | |
scsi: ufs: core: Support UFSHCI 4.1 CQ entry tag
The UFSHCI 4.1 specification introduces a new completion queue (CQ) entry
format, allowing the tag to be obtained directly.
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260210071834.1837878-1-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/ufs/core/ufs-mcq.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c index eb3770830d73..b999bc4d532d 100644 --- a/drivers/ufs/core/ufs-mcq.c +++ b/drivers/ufs/core/ufs-mcq.c @@ -273,13 +273,18 @@ void ufshcd_mcq_write_cqis(struct ufs_hba *hba, u32 val, int i) EXPORT_SYMBOL_GPL(ufshcd_mcq_write_cqis); /* - * Current MCQ specification doesn't provide a Task Tag or its equivalent in + * UFSHCI 4.0 MCQ specification doesn't provide a Task Tag or its equivalent in * the Completion Queue Entry. Find the Task Tag using an indirect method. + * UFSHCI 4.1 and above can directly return the Task Tag in the Completion Queue + * Entry. */ static int ufshcd_mcq_get_tag(struct ufs_hba *hba, struct cq_entry *cqe) { u64 addr; + if (hba->ufs_version >= ufshci_version(4, 1)) + return cqe->task_tag; + /* sizeof(struct utp_transfer_cmd_desc) must be a multiple of 128 */ BUILD_BUG_ON(sizeof(struct utp_transfer_cmd_desc) & GENMASK(6, 0)); |