diff options
| author | Bean Huo <beanhuo@micron.com> | 2023-08-09 21:18:46 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-08-31 04:42:30 +0300 |
| commit | c91e585cfb3dd7d076e9ba0967908fc504d32def (patch) | |
| tree | 96cc28decba794f4de2e672fc0db750fabc45e63 /drivers/ufs/core/ufs_bsg.c | |
| parent | 0854065092a7a49a88bb592473abafb0cecd9f1c (diff) | |
| download | linux-c91e585cfb3dd7d076e9ba0967908fc504d32def.tar.xz | |
scsi: ufs: core: Add advanced RPMB support where UFSHCI 4.0 does not support EHS length in UTRD
According to UFSHCI 4.0 specification:
5.2 Host Controller Capabilities Registers
5.2.1 Offset 00h: CAP – Controller Capabilities:
"EHS Length in UTRD Supported (EHSLUTRDS): Indicates whether the host
controller supports EHS Length field in UTRD.
0 – Host controller takes EHS length from CMD UPIU, and SW driver use EHS
Length field in CMD UPIU.
1 – HW controller takes EHS length from UTRD, and SW driver use EHS
Length field in UTRD.
NOTE Recommend Host controllers move to taking EHS length from UTRD, and
in UFS-5, it will be mandatory."
So, when UFSHCI 4.0 doesn't support EHS Length field in UTRD, we could use
EHS Length field in CMD UPIU. Remove the limitation that advanced RPMB only
works when EHS length is supported in UTRD.
Fixes: 6ff265fc5ef6 ("scsi: ufs: core: bsg: Add advanced RPMB support in ufs_bsg")
Co-developed-by: "jonghwi.rha" <jonghwi.rha@samsung.com>
Signed-off-by: "jonghwi.rha" <jonghwi.rha@samsung.com>
Signed-off-by: Bean Huo <beanhuo@micron.com>
Link: https://lore.kernel.org/r/20230809181847.102123-2-beanhuo@iokpp.de
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs/core/ufs_bsg.c')
| -rw-r--r-- | drivers/ufs/core/ufs_bsg.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/ufs/core/ufs_bsg.c b/drivers/ufs/core/ufs_bsg.c index 34e423924e06..374e5aae4e7e 100644 --- a/drivers/ufs/core/ufs_bsg.c +++ b/drivers/ufs/core/ufs_bsg.c @@ -76,8 +76,7 @@ static int ufs_bsg_exec_advanced_rpmb_req(struct ufs_hba *hba, struct bsg_job *j int ret; int data_len; - if (hba->ufs_version < ufshci_version(4, 0) || !hba->dev_info.b_advanced_rpmb_en || - !(hba->capabilities & MASK_EHSLUTRD_SUPPORTED)) + if (hba->ufs_version < ufshci_version(4, 0) || !hba->dev_info.b_advanced_rpmb_en) return -EINVAL; if (rpmb_request->ehs_req.length != 2 || rpmb_request->ehs_req.ehs_type != 1) |