diff options
Diffstat (limited to 'drivers/scsi/ufs/ufs.h')
| -rw-r--r-- | drivers/scsi/ufs/ufs.h | 155 |
1 files changed, 143 insertions, 12 deletions
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index 139bc06..bce09a6 100644 --- a/drivers/scsi/ufs/ufs.h +++ b/drivers/scsi/ufs/ufs.h @@ -36,10 +36,17 @@ #ifndef _UFS_H #define _UFS_H +#include <linux/mutex.h> +#include <linux/types.h> + #define MAX_CDB_SIZE 16 +#define GENERAL_UPIU_REQUEST_SIZE 32 +#define QUERY_DESC_MAX_SIZE 256 +#define QUERY_OSF_SIZE (GENERAL_UPIU_REQUEST_SIZE - \ + (sizeof(struct utp_upiu_header))) #define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\ - ((byte3 << 24) | (byte2 << 16) |\ + cpu_to_be32((byte3 << 24) | (byte2 << 16) |\ (byte1 << 8) | (byte0)) /* @@ -62,7 +69,7 @@ enum { UPIU_TRANSACTION_COMMAND = 0x01, UPIU_TRANSACTION_DATA_OUT = 0x02, UPIU_TRANSACTION_TASK_REQ = 0x04, - UPIU_TRANSACTION_QUERY_REQ = 0x26, + UPIU_TRANSACTION_QUERY_REQ = 0x16, }; /* UTP UPIU Transaction Codes Target to Initiator */ @@ -73,6 +80,7 @@ enum { UPIU_TRANSACTION_TASK_RSP = 0x24, UPIU_TRANSACTION_READY_XFER = 0x31, UPIU_TRANSACTION_QUERY_RSP = 0x36, + UPIU_TRANSACTION_REJECT_UPIU = 0x3F, }; /* UPIU Read/Write flags */ @@ -90,8 +98,41 @@ enum { UPIU_TASK_ATTR_ACA = 0x03, }; -/* UTP QUERY Transaction Specific Fields OpCode */ +/* UPIU Query request function */ enum { + UPIU_QUERY_FUNC_STANDARD_READ_REQUEST = 0x01, + UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST = 0x81, +}; + +/* Flag idn for Query Requests*/ +enum flag_idn { + QUERY_FLAG_IDN_FDEVICEINIT = 0x01, + QUERY_FLAG_IDN_BKOPS_EN = 0x04, +}; + +/* Attribute idn for Query requests */ +enum attr_idn { + QUERY_ATTR_IDN_BKOPS_STATUS = 0x05, + QUERY_ATTR_IDN_EE_CONTROL = 0x0D, + QUERY_ATTR_IDN_EE_STATUS = 0x0E, +}; + +/* Exception event mask values */ +enum { + MASK_EE_STATUS = 0xFFFF, + MASK_EE_URGENT_BKOPS = (1 << 2), +}; + +/* Background operation status */ +enum { + BKOPS_STATUS_NO_OP = 0x0, + BKOPS_STATUS_NON_CRITICAL = 0x1, + BKOPS_STATUS_PERF_IMPACT = 0x2, + BKOPS_STATUS_CRITICAL = 0x3, +}; + +/* UTP QUERY Transaction Specific Fields OpCode */ +enum query_opcode { UPIU_QUERY_OPCODE_NOP = 0x0, UPIU_QUERY_OPCODE_READ_DESC = 0x1, UPIU_QUERY_OPCODE_WRITE_DESC = 0x2, @@ -103,6 +144,21 @@ enum { UPIU_QUERY_OPCODE_TOGGLE_FLAG = 0x8, }; +/* Query response result code */ +enum { + QUERY_RESULT_SUCCESS = 0x00, + QUERY_RESULT_NOT_READABLE = 0xF6, + QUERY_RESULT_NOT_WRITEABLE = 0xF7, + QUERY_RESULT_ALREADY_WRITTEN = 0xF8, + QUERY_RESULT_INVALID_LENGTH = 0xF9, + QUERY_RESULT_INVALID_VALUE = 0xFA, + QUERY_RESULT_INVALID_SELECTOR = 0xFB, + QUERY_RESULT_INVALID_INDEX = 0xFC, + QUERY_RESULT_INVALID_IDN = 0xFD, + QUERY_RESULT_INVALID_OPCODE = 0xFE, + QUERY_RESULT_GENERAL_FAILURE = 0xFF, +}; + /* UTP Transfer Request Command Type (CT) */ enum { UPIU_COMMAND_SET_TYPE_SCSI = 0x0, @@ -110,10 +166,18 @@ enum { UPIU_COMMAND_SET_TYPE_QUERY = 0x2, }; +/* UTP Transfer Request Command Offset */ +#define UPIU_COMMAND_TYPE_OFFSET 28 + +/* Offset of the response code in the UPIU header */ +#define UPIU_RSP_CODE_OFFSET 8 + enum { - MASK_SCSI_STATUS = 0xFF, - MASK_TASK_RESPONSE = 0xFF00, - MASK_RSP_UPIU_RESULT = 0xFFFF, + MASK_SCSI_STATUS = 0xFF, + MASK_TASK_RESPONSE = 0xFF00, + MASK_RSP_UPIU_RESULT = 0xFFFF, + MASK_QUERY_DATA_SEG_LEN = 0xFFFF, + MASK_RSP_EXCEPTION_EVENT = 0x10000, }; /* Task management service response */ @@ -138,26 +202,59 @@ struct utp_upiu_header { /** * struct utp_upiu_cmd - Command UPIU structure - * @header: UPIU header structure DW-0 to DW-2 * @data_transfer_len: Data Transfer Length DW-3 * @cdb: Command Descriptor Block CDB DW-4 to DW-7 */ struct utp_upiu_cmd { - struct utp_upiu_header header; u32 exp_data_transfer_len; u8 cdb[MAX_CDB_SIZE]; }; /** - * struct utp_upiu_rsp - Response UPIU structure - * @header: UPIU header DW-0 to DW-2 + * struct utp_upiu_query - upiu request buffer structure for + * query request. + * @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 + * @reserved_osf: spec reserved field B-4,5 + * @length: number of descriptor bytes to read/write B-6,7 + * @value: Attribute value to be written DW-5 + * @reserved: spec reserved DW-6,7 + */ +struct utp_upiu_query { + u8 opcode; + u8 idn; + u8 index; + u8 selector; + u16 reserved_osf; + u16 length; + u32 value; + u32 reserved[2]; +}; + +/** + * struct utp_upiu_req - general upiu request structure + * @header:UPIU header structure DW-0 to DW-2 + * @sc: fields structure for scsi command DW-3 to DW-7 + * @qr: fields structure for query request DW-3 to DW-7 + */ +struct utp_upiu_req { + struct utp_upiu_header header; + union { + struct utp_upiu_cmd sc; + struct utp_upiu_query qr; + }; +}; + +/** + * struct utp_cmd_rsp - Response UPIU structure * @residual_transfer_count: Residual transfer count DW-3 * @reserved: Reserved double words DW-4 to DW-7 * @sense_data_len: Sense data length DW-8 U16 * @sense_data: Sense data field DW-8 to DW-12 */ -struct utp_upiu_rsp { - struct utp_upiu_header header; +struct utp_cmd_rsp { u32 residual_transfer_count; u32 reserved[4]; u16 sense_data_len; @@ -165,6 +262,20 @@ struct utp_upiu_rsp { }; /** + * struct utp_upiu_rsp - general upiu response structure + * @header: UPIU header structure DW-0 to DW-2 + * @sr: fields structure for scsi command DW-3 to DW-12 + * @qr: fields structure for query request DW-3 to DW-7 + */ +struct utp_upiu_rsp { + struct utp_upiu_header header; + union { + struct utp_cmd_rsp sr; + struct utp_upiu_query qr; + }; +}; + +/** * struct utp_upiu_task_req - Task request UPIU structure * @header - UPIU header structure DW0 to DW-2 * @input_param1: Input parameter 1 DW-3 @@ -194,4 +305,24 @@ struct utp_upiu_task_rsp { u32 reserved[3]; }; +/** + * struct ufs_query_req - parameters for building a query request + * @query_func: UPIU header query function + * @upiu_req: the query request data + */ +struct ufs_query_req { + u8 query_func; + struct utp_upiu_query upiu_req; +}; + +/** + * struct ufs_query_resp - UPIU QUERY + * @response: device response code + * @upiu_res: query response data + */ +struct ufs_query_res { + u8 response; + struct utp_upiu_query upiu_res; +}; + #endif /* End of Header */ |
