diff options
| author | Bean Huo <beanhuo@micron.com> | 2022-12-01 15:04:37 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-12-30 22:01:04 +0100 |
| commit | 6ff265fc5ef660499e0edc4641647e99eed3f519 (patch) | |
| tree | 26e4dc87b18bbea0988ef9b9ac4201cd838a7301 /include/ufs | |
| parent | scsi: ufs: core: Pass EHS length into ufshcd_prepare_req_desc_hdr() (diff) | |
| download | linux-6ff265fc5ef660499e0edc4641647e99eed3f519.tar.xz linux-6ff265fc5ef660499e0edc4641647e99eed3f519.zip | |
scsi: ufs: core: bsg: Add advanced RPMB support in ufs_bsg
Add advanced RPMB support in ufs_bsg:
1. According to the UFS specification, only one RPMB operation can be
performed at any time. We can ensure this by using reserved slot and
its dev_cmd sync operation protection mechanism.
2. For Advanced RPMB, RPMB metadata is packaged in an EHS (Extra Header
Segment) of a command UPIU, and the corresponding reply EHS (from the
device) should also be returned to the user space. bsg_job->request
and bsg_job->reply allow us to pass and return EHS from/back to
userspace.
Compared to normal/legacy RPMB, the advantages of advanced RPMB are:
1. The data length in the Advanced RPMB data read/write command can be
larger than 4KB. For the legacy RPMB, the data length in a single RPMB
data transfer is 256 bytes.
2. All of the advanced RPMB operations will be a single command. For
legacy RPMB, take the read write-counter value as an example, you need
two commands (first SECURITY PROTOCOL OUT, then second SECURITY
PROTOCOL IN).
Signed-off-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/ufs')
| -rw-r--r-- | include/ufs/ufs.h | 5 | ||||
| -rw-r--r-- | include/ufs/ufshcd.h | 6 | ||||
| -rw-r--r-- | include/ufs/ufshci.h | 1 |
3 files changed, 11 insertions, 1 deletions
diff --git a/include/ufs/ufs.h b/include/ufs/ufs.h index 17e401df674c..0c112195b288 100644 --- a/include/ufs/ufs.h +++ b/include/ufs/ufs.h @@ -49,6 +49,11 @@ */ #define UFS_WB_EXCEED_LIFETIME 0x0B +/* + * In UFS Spec, the Extra Header Segment (EHS) starts from byte 32 in UPIU request/response packet + */ +#define EHS_OFFSET_IN_RESPONSE 32 + /* Well known logical unit id in LUN field of UPIU */ enum { UFS_UPIU_REPORT_LUNS_WLUN = 0x81, diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 5cf81dff60aa..c3dfa8084b5c 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -30,6 +30,7 @@ struct ufs_hba; enum dev_cmd_type { DEV_CMD_TYPE_NOP = 0x0, DEV_CMD_TYPE_QUERY = 0x1, + DEV_CMD_TYPE_RPMB = 0x2, }; enum ufs_event_type { @@ -1201,7 +1202,10 @@ int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba, int msgcode, u8 *desc_buff, int *buff_len, enum query_opcode desc_op); - +int ufshcd_advanced_rpmb_req_handler(struct ufs_hba *hba, struct utp_upiu_req *req_upiu, + struct utp_upiu_req *rsp_upiu, struct ufs_ehs *ehs_req, + struct ufs_ehs *ehs_rsp, int sg_cnt, + struct scatterlist *sg_list, enum dma_data_direction dir); int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable); int ufshcd_wb_toggle_buf_flush(struct ufs_hba *hba, bool enable); int ufshcd_suspend_prepare(struct device *dev); diff --git a/include/ufs/ufshci.h b/include/ufs/ufshci.h index f525566a0864..af216296b86e 100644 --- a/include/ufs/ufshci.h +++ b/include/ufs/ufshci.h @@ -63,6 +63,7 @@ enum { enum { MASK_TRANSFER_REQUESTS_SLOTS = 0x0000001F, MASK_TASK_MANAGEMENT_REQUEST_SLOTS = 0x00070000, + MASK_EHSLUTRD_SUPPORTED = 0x00400000, MASK_AUTO_HIBERN8_SUPPORT = 0x00800000, MASK_64_ADDRESSING_SUPPORT = 0x01000000, MASK_OUT_OF_ORDER_DATA_DELIVERY_SUPPORT = 0x02000000, |