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scsi: ufs: core: Add support for qTimestamp attribute

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The new qTimestamp attribute was added to UFS 4.0 spec, in order to
synchronize timestamp between device logs and the host. The spec recommends
to send this attribute upon device power-on Reset/HW reset or when
switching to Active state (using SSU command). Due to this attribute, the
attribute's max value was extended to 8 bytes. As a result, the new
definition of struct utp_upiu_query_v4_0 was added.

Signed-off-by: Arthur Simchaev <Arthur.Simchaev@wdc.com>

-----------------
Changes to v2:
- Adressed Bart's comments
- Add missed response variable to ufshcd_set_timestamp_attr

Link: https://lore.kernel.org/r/20230626103320.8737-1-arthur.simchaev@wdc.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Arthur Simchaev
2023-06-26 13:33:19 +03:00
committed by Martin K. Petersen
parent 47699a2b63
commit 24befa92ed
3 changed files with 64 additions and 0 deletions
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25
include/uapi/scsi/scsi_bsg_ufs.h
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@@ -70,6 +70,31 @@ struct utp_upiu_query {
__be32 reserved[2];
};
/**
* struct utp_upiu_query_v4_0 - upiu request buffer structure for
* query request >= UFS 4.0 spec.
* @opcode: command to perform B-0
* @idn: a value that indicates the particular type of data B-1
* @index: Index to further identify data B-2
* @selector: Index to further identify data B-3
* @osf4: spec field B-5
* @osf5: spec field B 6,7
* @osf6: spec field DW 8,9
* @osf7: spec field DW 10,11
*/
struct utp_upiu_query_v4_0 {
__u8 opcode;
__u8 idn;
__u8 index;
__u8 selector;
__u8 osf3;
__u8 osf4;
__be16 osf5;
__be32 osf6;
__be32 osf7;
__be32 reserved;
};
/**
* struct utp_upiu_cmd - Command UPIU structure
* @data_transfer_len: Data Transfer Length DW-3