diff options
Diffstat (limited to 'include/uapi/scsi/scsi_bsg_ufs.h')
| -rw-r--r-- | include/uapi/scsi/scsi_bsg_ufs.h | 52 |
1 files changed, 49 insertions, 3 deletions
diff --git a/include/uapi/scsi/scsi_bsg_ufs.h b/include/uapi/scsi/scsi_bsg_ufs.h index fd3f9e5ee241..7c7975f9905e 100644 --- a/include/uapi/scsi/scsi_bsg_ufs.h +++ b/include/uapi/scsi/scsi_bsg_ufs.h @@ -8,6 +8,7 @@ #ifndef SCSI_BSG_UFS_H #define SCSI_BSG_UFS_H +#include <asm/byteorder.h> #include <linux/types.h> /* * This file intended to be included by both kernel and user space @@ -40,11 +41,56 @@ enum ufs_rpmb_op_type { * @dword_0: UPIU header DW-0 * @dword_1: UPIU header DW-1 * @dword_2: UPIU header DW-2 + * + * @transaction_code: Type of request or response. See also enum + * upiu_request_transaction and enum upiu_response_transaction. + * @flags: UPIU flags. The meaning of individual flags depends on the + * transaction code. + * @lun: Logical unit number. + * @task_tag: Task tag. + * @iid: Initiator ID. + * @command_set_type: 0 for SCSI command set; 1 for UFS specific. + * @tm_function: Task management function in case of a task management request + * UPIU. + * @query_function: Query function in case of a query request UPIU. + * @response: 0 for success; 1 for failure. + * @status: SCSI status if this is the header of a response to a SCSI command. + * @ehs_length: EHS length in units of 32 bytes. + * @device_information: + * @data_segment_length: data segment length. */ struct utp_upiu_header { - __be32 dword_0; - __be32 dword_1; - __be32 dword_2; + union { + struct { + __be32 dword_0; + __be32 dword_1; + __be32 dword_2; + }; + struct { + __u8 transaction_code; + __u8 flags; + __u8 lun; + __u8 task_tag; +#if defined(__BIG_ENDIAN) + __u8 iid: 4; + __u8 command_set_type: 4; +#elif defined(__LITTLE_ENDIAN) + __u8 command_set_type: 4; + __u8 iid: 4; +#else +#error +#endif + union { + __u8 tm_function; + __u8 query_function; + }; + __u8 response; + __u8 status; + __u8 ehs_length; + __u8 device_information; + __be16 data_segment_length; + }; + }; }; /** |