/* * 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 * Vinayak Holikatti * * 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 * * * 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 #include #define MAX_CDB_SIZE 16 #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 = 0x26, }; /* 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, }; /* UTP QUERY Transaction Specific Fields OpCode */ enum { 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, }; /* 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, }; /* 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 { u32 dword_0; u32 dword_1; u32 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 { u32 exp_data_transfer_len; u8 cdb[MAX_CDB_SIZE]; }; /** * 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 */ struct utp_upiu_req { struct utp_upiu_header header; struct utp_upiu_cmd sc; }; /** * 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 { u32 residual_transfer_count; u32 reserved[4]; u16 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 */ struct utp_upiu_rsp { struct utp_upiu_header header; struct utp_cmd_rsp sr; }; /** * 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; u32 input_param1; u32 input_param2; u32 input_param3; u32 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; u32 output_param1; u32 output_param2; u32 reserved[3]; }; #endif /* End of Header */