drivers/scsi/ufs/ufs.h - kernel/msm-4.9 - Gitiles

 /*
  * Universal Flash Storage Host controller driver
  *
  * This code is based on drivers/scsi/ufs/ufs.h
  * Copyright (C) 2011-2013 Samsung India Software Operations
  *
  * Authors:
  *	Santosh Yaraganavi <santosh.sy@samsung.com>
  *	Vinayak Holikatti <h.vinayak@samsung.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
  * of the License, or (at your option) any later version.
  * See the COPYING file in the top-level directory or visit
  * <http://www.gnu.org/licenses/gpl-2.0.html>
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * This program is provided "AS IS" and "WITH ALL FAULTS" and
  * without warranty of any kind. You are solely responsible for
  * determining the appropriateness of using and distributing
  * the program and assume all risks associated with your exercise
  * of rights with respect to the program, including but not limited
  * to infringement of third party rights, the risks and costs of
  * program errors, damage to or loss of data, programs or equipment,
  * and unavailability or interruption of operations. Under no
  * circumstances will the contributor of this Program be liable for
  * any damages of any kind arising from your use or distribution of
  * this program.
  */

 #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       255
 #define QUERY_DESC_MIN_SIZE       2
 #define QUERY_OSF_SIZE            (GENERAL_UPIU_REQUEST_SIZE - \
 					(sizeof(struct utp_upiu_header)))

 #define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
 			cpu_to_be32((byte3 << 24) | (byte2 << 16) |\
 			 (byte1 << 8) | (byte0))

 /*
  * UFS Protocol Information Unit related definitions
  */

 /* Task management functions */
 enum {
 	UFS_ABORT_TASK		= 0x01,
 	UFS_ABORT_TASK_SET	= 0x02,
 	UFS_CLEAR_TASK_SET	= 0x04,
 	UFS_LOGICAL_RESET	= 0x08,
 	UFS_QUERY_TASK		= 0x80,
 	UFS_QUERY_TASK_SET	= 0x81,
 };

 /* UTP UPIU Transaction Codes Initiator to Target */
 enum {
 	UPIU_TRANSACTION_NOP_OUT	= 0x00,
 	UPIU_TRANSACTION_COMMAND	= 0x01,
 	UPIU_TRANSACTION_DATA_OUT	= 0x02,
 	UPIU_TRANSACTION_TASK_REQ	= 0x04,
 	UPIU_TRANSACTION_QUERY_REQ	= 0x16,
 };

 /* UTP UPIU Transaction Codes Target to Initiator */
 enum {
 	UPIU_TRANSACTION_NOP_IN		= 0x20,
 	UPIU_TRANSACTION_RESPONSE	= 0x21,
 	UPIU_TRANSACTION_DATA_IN	= 0x22,
 	UPIU_TRANSACTION_TASK_RSP	= 0x24,
 	UPIU_TRANSACTION_READY_XFER	= 0x31,
 	UPIU_TRANSACTION_QUERY_RSP	= 0x36,
 	UPIU_TRANSACTION_REJECT_UPIU	= 0x3F,
 };

 /* UPIU Read/Write flags */
 enum {
 	UPIU_CMD_FLAGS_NONE	= 0x00,
 	UPIU_CMD_FLAGS_WRITE	= 0x20,
 	UPIU_CMD_FLAGS_READ	= 0x40,
 };

 /* UPIU Task Attributes */
 enum {
 	UPIU_TASK_ATTR_SIMPLE	= 0x00,
 	UPIU_TASK_ATTR_ORDERED	= 0x01,
 	UPIU_TASK_ATTR_HEADQ	= 0x02,
 	UPIU_TASK_ATTR_ACA	= 0x03,
 };

 /* 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,
 };

 /* Descriptor idn for Query requests */
 enum desc_idn {
 	QUERY_DESC_IDN_DEVICE		= 0x0,
 	QUERY_DESC_IDN_CONFIGURAION	= 0x1,
 	QUERY_DESC_IDN_UNIT		= 0x2,
 	QUERY_DESC_IDN_RFU_0		= 0x3,
 	QUERY_DESC_IDN_INTERCONNECT	= 0x4,
 	QUERY_DESC_IDN_STRING		= 0x5,
 	QUERY_DESC_IDN_RFU_1		= 0x6,
 	QUERY_DESC_IDN_GEOMETRY		= 0x7,
 	QUERY_DESC_IDN_POWER		= 0x8,
 	QUERY_DESC_IDN_RFU_2		= 0x9,
 };

 #define UNIT_DESC_MAX_SIZE       0x22
 /* Unit descriptor parameters offsets in bytes*/
 enum unit_desc_param {
 	UNIT_DESC_PARAM_LEN			= 0x0,
 	UNIT_DESC_PARAM_TYPE			= 0x1,
 	UNIT_DESC_PARAM_UNIT_INDEX		= 0x2,
 	UNIT_DESC_PARAM_LU_ENABLE		= 0x3,
 	UNIT_DESC_PARAM_BOOT_LUN_ID		= 0x4,
 	UNIT_DESC_PARAM_LU_WR_PROTECT		= 0x5,
 	UNIT_DESC_PARAM_LU_Q_DEPTH		= 0x6,
 	UNIT_DESC_PARAM_MEM_TYPE		= 0x8,
 	UNIT_DESC_PARAM_DATA_RELIABILITY	= 0x9,
 	UNIT_DESC_PARAM_LOGICAL_BLK_SIZE	= 0xA,
 	UNIT_DESC_PARAM_LOGICAL_BLK_COUNT	= 0xB,
 	UNIT_DESC_PARAM_ERASE_BLK_SIZE		= 0x13,
 	UNIT_DESC_PARAM_PROVISIONING_TYPE	= 0x17,
 	UNIT_DESC_PARAM_PHY_MEM_RSRC_CNT	= 0x18,
 	UNIT_DESC_PARAM_CTX_CAPABILITIES	= 0x20,
 	UNIT_DESC_PARAM_LARGE_UNIT_SIZE_M1	= 0x22,
 };

 /* 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,
 	UPIU_QUERY_OPCODE_READ_ATTR	= 0x3,
 	UPIU_QUERY_OPCODE_WRITE_ATTR	= 0x4,
 	UPIU_QUERY_OPCODE_READ_FLAG	= 0x5,
 	UPIU_QUERY_OPCODE_SET_FLAG	= 0x6,
 	UPIU_QUERY_OPCODE_CLEAR_FLAG	= 0x7,
 	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,
 	UPIU_COMMAND_SET_TYPE_UFS	= 0x1,
 	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_QUERY_DATA_SEG_LEN         = 0xFFFF,
 	MASK_RSP_UPIU_DATA_SEG_LEN	= 0xFFFF,
 	MASK_RSP_EXCEPTION_EVENT        = 0x10000,
 };

 /* Task management service response */
 enum {
 	UPIU_TASK_MANAGEMENT_FUNC_COMPL		= 0x00,
 	UPIU_TASK_MANAGEMENT_FUNC_NOT_SUPPORTED = 0x04,
 	UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED	= 0x08,
 	UPIU_TASK_MANAGEMENT_FUNC_FAILED	= 0x05,
 	UPIU_INCORRECT_LOGICAL_UNIT_NO		= 0x09,
 };
 /**
  * struct utp_upiu_header - UPIU header structure
  * @dword_0: UPIU header DW-0
  * @dword_1: UPIU header DW-1
  * @dword_2: UPIU header DW-2
  */
 struct utp_upiu_header {
 	__be32 dword_0;
 	__be32 dword_1;
 	__be32 dword_2;
 };

 /**
  * struct utp_upiu_cmd - Command UPIU structure
  * @data_transfer_len: Data Transfer Length DW-3
  * @cdb: Command Descriptor Block CDB DW-4 to DW-7
  */
 struct utp_upiu_cmd {
 	__be32 exp_data_transfer_len;
 	u8 cdb[MAX_CDB_SIZE];
 };

 /**
  * 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;
 	__be16 reserved_osf;
 	__be16 length;
 	__be32 value;
 	__be32 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_cmd_rsp {
 	__be32 residual_transfer_count;
 	__be32 reserved[4];
 	__be16 sense_data_len;
 	u8 sense_data[18];
 };

 /**
  * 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
  * @input_param2: Input parameter 2 DW-4
  * @input_param3: Input parameter 3 DW-5
  * @reserved: Reserved double words DW-6 to DW-7
  */
 struct utp_upiu_task_req {
 	struct utp_upiu_header header;
 	__be32 input_param1;
 	__be32 input_param2;
 	__be32 input_param3;
 	__be32 reserved[2];
 };

 /**
  * struct utp_upiu_task_rsp - Task Management Response UPIU structure
  * @header: UPIU header structure DW0-DW-2
  * @output_param1: Ouput parameter 1 DW3
  * @output_param2: Output parameter 2 DW4
  * @reserved: Reserved double words DW-5 to DW-7
  */
 struct utp_upiu_task_rsp {
 	struct utp_upiu_header header;
 	__be32 output_param1;
 	__be32 output_param2;
 	__be32 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 */
	/*
	* Universal Flash Storage Host controller driver
	*
	* This code is based on drivers/scsi/ufs/ufs.h
	* Copyright (C) 2011-2013 Samsung India Software Operations
	*
	* Authors:
	* Santosh Yaraganavi <santosh.sy@samsung.com>
	* Vinayak Holikatti <h.vinayak@samsung.com>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License
	* as published by the Free Software Foundation; either version 2
	* of the License, or (at your option) any later version.
	* See the COPYING file in the top-level directory or visit
	* <http://www.gnu.org/licenses/gpl-2.0.html>
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* This program is provided "AS IS" and "WITH ALL FAULTS" and
	* without warranty of any kind. You are solely responsible for
	* determining the appropriateness of using and distributing
	* the program and assume all risks associated with your exercise
	* of rights with respect to the program, including but not limited
	* to infringement of third party rights, the risks and costs of
	* program errors, damage to or loss of data, programs or equipment,
	* and unavailability or interruption of operations. Under no
	* circumstances will the contributor of this Program be liable for
	* any damages of any kind arising from your use or distribution of
	* this program.
	*/

	#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 255
	#define QUERY_DESC_MIN_SIZE 2
	#define QUERY_OSF_SIZE (GENERAL_UPIU_REQUEST_SIZE - \
	(sizeof(struct utp_upiu_header)))

	#define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
	cpu_to_be32((byte3 << 24) \| (byte2 << 16) \|\
	(byte1 << 8) \| (byte0))

	/*
	* UFS Protocol Information Unit related definitions
	*/

	/* Task management functions */
	enum {
	UFS_ABORT_TASK = 0x01,
	UFS_ABORT_TASK_SET = 0x02,
	UFS_CLEAR_TASK_SET = 0x04,
	UFS_LOGICAL_RESET = 0x08,
	UFS_QUERY_TASK = 0x80,
	UFS_QUERY_TASK_SET = 0x81,
	};

	/* UTP UPIU Transaction Codes Initiator to Target */
	enum {
	UPIU_TRANSACTION_NOP_OUT = 0x00,
	UPIU_TRANSACTION_COMMAND = 0x01,
	UPIU_TRANSACTION_DATA_OUT = 0x02,
	UPIU_TRANSACTION_TASK_REQ = 0x04,
	UPIU_TRANSACTION_QUERY_REQ = 0x16,
	};

	/* UTP UPIU Transaction Codes Target to Initiator */
	enum {
	UPIU_TRANSACTION_NOP_IN = 0x20,
	UPIU_TRANSACTION_RESPONSE = 0x21,
	UPIU_TRANSACTION_DATA_IN = 0x22,
	UPIU_TRANSACTION_TASK_RSP = 0x24,
	UPIU_TRANSACTION_READY_XFER = 0x31,
	UPIU_TRANSACTION_QUERY_RSP = 0x36,
	UPIU_TRANSACTION_REJECT_UPIU = 0x3F,
	};

	/* UPIU Read/Write flags */
	enum {
	UPIU_CMD_FLAGS_NONE = 0x00,
	UPIU_CMD_FLAGS_WRITE = 0x20,
	UPIU_CMD_FLAGS_READ = 0x40,
	};

	/* UPIU Task Attributes */
	enum {
	UPIU_TASK_ATTR_SIMPLE = 0x00,
	UPIU_TASK_ATTR_ORDERED = 0x01,
	UPIU_TASK_ATTR_HEADQ = 0x02,
	UPIU_TASK_ATTR_ACA = 0x03,
	};

	/* 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,
	};

	/* Descriptor idn for Query requests */
	enum desc_idn {
	QUERY_DESC_IDN_DEVICE = 0x0,
	QUERY_DESC_IDN_CONFIGURAION = 0x1,
	QUERY_DESC_IDN_UNIT = 0x2,
	QUERY_DESC_IDN_RFU_0 = 0x3,
	QUERY_DESC_IDN_INTERCONNECT = 0x4,
	QUERY_DESC_IDN_STRING = 0x5,
	QUERY_DESC_IDN_RFU_1 = 0x6,
	QUERY_DESC_IDN_GEOMETRY = 0x7,
	QUERY_DESC_IDN_POWER = 0x8,
	QUERY_DESC_IDN_RFU_2 = 0x9,
	};

	#define UNIT_DESC_MAX_SIZE 0x22
	/* Unit descriptor parameters offsets in bytes*/
	enum unit_desc_param {
	UNIT_DESC_PARAM_LEN = 0x0,
	UNIT_DESC_PARAM_TYPE = 0x1,
	UNIT_DESC_PARAM_UNIT_INDEX = 0x2,
	UNIT_DESC_PARAM_LU_ENABLE = 0x3,
	UNIT_DESC_PARAM_BOOT_LUN_ID = 0x4,
	UNIT_DESC_PARAM_LU_WR_PROTECT = 0x5,
	UNIT_DESC_PARAM_LU_Q_DEPTH = 0x6,
	UNIT_DESC_PARAM_MEM_TYPE = 0x8,
	UNIT_DESC_PARAM_DATA_RELIABILITY = 0x9,
	UNIT_DESC_PARAM_LOGICAL_BLK_SIZE = 0xA,
	UNIT_DESC_PARAM_LOGICAL_BLK_COUNT = 0xB,
	UNIT_DESC_PARAM_ERASE_BLK_SIZE = 0x13,
	UNIT_DESC_PARAM_PROVISIONING_TYPE = 0x17,
	UNIT_DESC_PARAM_PHY_MEM_RSRC_CNT = 0x18,
	UNIT_DESC_PARAM_CTX_CAPABILITIES = 0x20,
	UNIT_DESC_PARAM_LARGE_UNIT_SIZE_M1 = 0x22,
	};

	/* 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,
	UPIU_QUERY_OPCODE_READ_ATTR = 0x3,
	UPIU_QUERY_OPCODE_WRITE_ATTR = 0x4,
	UPIU_QUERY_OPCODE_READ_FLAG = 0x5,
	UPIU_QUERY_OPCODE_SET_FLAG = 0x6,
	UPIU_QUERY_OPCODE_CLEAR_FLAG = 0x7,
	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,
	UPIU_COMMAND_SET_TYPE_UFS = 0x1,
	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_QUERY_DATA_SEG_LEN = 0xFFFF,
	MASK_RSP_UPIU_DATA_SEG_LEN = 0xFFFF,
	MASK_RSP_EXCEPTION_EVENT = 0x10000,
	};

	/* Task management service response */
	enum {
	UPIU_TASK_MANAGEMENT_FUNC_COMPL = 0x00,
	UPIU_TASK_MANAGEMENT_FUNC_NOT_SUPPORTED = 0x04,
	UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED = 0x08,
	UPIU_TASK_MANAGEMENT_FUNC_FAILED = 0x05,
	UPIU_INCORRECT_LOGICAL_UNIT_NO = 0x09,
	};
	/**
	* struct utp_upiu_header - UPIU header structure
	* @dword_0: UPIU header DW-0
	* @dword_1: UPIU header DW-1
	* @dword_2: UPIU header DW-2
	*/
	struct utp_upiu_header {
	__be32 dword_0;
	__be32 dword_1;
	__be32 dword_2;
	};

	/**
	* struct utp_upiu_cmd - Command UPIU structure
	* @data_transfer_len: Data Transfer Length DW-3
	* @cdb: Command Descriptor Block CDB DW-4 to DW-7
	*/
	struct utp_upiu_cmd {
	__be32 exp_data_transfer_len;
	u8 cdb[MAX_CDB_SIZE];
	};

	/**
	* 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;
	__be16 reserved_osf;
	__be16 length;
	__be32 value;
	__be32 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_cmd_rsp {
	__be32 residual_transfer_count;
	__be32 reserved[4];
	__be16 sense_data_len;
	u8 sense_data[18];
	};

	/**
	* 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
	* @input_param2: Input parameter 2 DW-4
	* @input_param3: Input parameter 3 DW-5
	* @reserved: Reserved double words DW-6 to DW-7
	*/
	struct utp_upiu_task_req {
	struct utp_upiu_header header;
	__be32 input_param1;
	__be32 input_param2;
	__be32 input_param3;
	__be32 reserved[2];
	};

	/**
	* struct utp_upiu_task_rsp - Task Management Response UPIU structure
	* @header: UPIU header structure DW0-DW-2
	* @output_param1: Ouput parameter 1 DW3
	* @output_param2: Output parameter 2 DW4
	* @reserved: Reserved double words DW-5 to DW-7
	*/
	struct utp_upiu_task_rsp {
	struct utp_upiu_header header;
	__be32 output_param1;
	__be32 output_param2;
	__be32 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 */