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3b1d05807a
This patch segregates the PCI specific code in ufshcd.c to make it ready for splitting into core ufs driver and PCI glue driver. Also copyright header modification to remove extra warranty disclaim. Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Tested-by: Maya Erez <merez@codeaurora.org> Signed-off-by: Vinayak Holikatti <vinholikatti@gmail.com> Signed-off-by: Santosh Yaraganavi <santoshsy@gmail.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
198 lines
5.4 KiB
C
198 lines
5.4 KiB
C
/*
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* Universal Flash Storage Host controller driver
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*
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* This code is based on drivers/scsi/ufs/ufs.h
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* Copyright (C) 2011-2013 Samsung India Software Operations
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*
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* Authors:
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* Santosh Yaraganavi <santosh.sy@samsung.com>
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* Vinayak Holikatti <h.vinayak@samsung.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* See the COPYING file in the top-level directory or visit
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* <http://www.gnu.org/licenses/gpl-2.0.html>
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* This program is provided "AS IS" and "WITH ALL FAULTS" and
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* without warranty of any kind. You are solely responsible for
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* determining the appropriateness of using and distributing
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* the program and assume all risks associated with your exercise
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* of rights with respect to the program, including but not limited
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* to infringement of third party rights, the risks and costs of
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* program errors, damage to or loss of data, programs or equipment,
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* and unavailability or interruption of operations. Under no
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* circumstances will the contributor of this Program be liable for
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* any damages of any kind arising from your use or distribution of
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* this program.
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*/
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#ifndef _UFS_H
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#define _UFS_H
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#define MAX_CDB_SIZE 16
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#define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
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((byte3 << 24) | (byte2 << 16) |\
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(byte1 << 8) | (byte0))
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/*
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* UFS Protocol Information Unit related definitions
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*/
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/* Task management functions */
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enum {
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UFS_ABORT_TASK = 0x01,
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UFS_ABORT_TASK_SET = 0x02,
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UFS_CLEAR_TASK_SET = 0x04,
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UFS_LOGICAL_RESET = 0x08,
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UFS_QUERY_TASK = 0x80,
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UFS_QUERY_TASK_SET = 0x81,
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};
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/* UTP UPIU Transaction Codes Initiator to Target */
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enum {
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UPIU_TRANSACTION_NOP_OUT = 0x00,
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UPIU_TRANSACTION_COMMAND = 0x01,
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UPIU_TRANSACTION_DATA_OUT = 0x02,
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UPIU_TRANSACTION_TASK_REQ = 0x04,
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UPIU_TRANSACTION_QUERY_REQ = 0x26,
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};
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/* UTP UPIU Transaction Codes Target to Initiator */
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enum {
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UPIU_TRANSACTION_NOP_IN = 0x20,
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UPIU_TRANSACTION_RESPONSE = 0x21,
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UPIU_TRANSACTION_DATA_IN = 0x22,
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UPIU_TRANSACTION_TASK_RSP = 0x24,
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UPIU_TRANSACTION_READY_XFER = 0x31,
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UPIU_TRANSACTION_QUERY_RSP = 0x36,
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};
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/* UPIU Read/Write flags */
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enum {
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UPIU_CMD_FLAGS_NONE = 0x00,
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UPIU_CMD_FLAGS_WRITE = 0x20,
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UPIU_CMD_FLAGS_READ = 0x40,
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};
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/* UPIU Task Attributes */
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enum {
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UPIU_TASK_ATTR_SIMPLE = 0x00,
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UPIU_TASK_ATTR_ORDERED = 0x01,
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UPIU_TASK_ATTR_HEADQ = 0x02,
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UPIU_TASK_ATTR_ACA = 0x03,
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};
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/* UTP QUERY Transaction Specific Fields OpCode */
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enum {
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UPIU_QUERY_OPCODE_NOP = 0x0,
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UPIU_QUERY_OPCODE_READ_DESC = 0x1,
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UPIU_QUERY_OPCODE_WRITE_DESC = 0x2,
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UPIU_QUERY_OPCODE_READ_ATTR = 0x3,
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UPIU_QUERY_OPCODE_WRITE_ATTR = 0x4,
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UPIU_QUERY_OPCODE_READ_FLAG = 0x5,
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UPIU_QUERY_OPCODE_SET_FLAG = 0x6,
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UPIU_QUERY_OPCODE_CLEAR_FLAG = 0x7,
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UPIU_QUERY_OPCODE_TOGGLE_FLAG = 0x8,
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};
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/* UTP Transfer Request Command Type (CT) */
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enum {
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UPIU_COMMAND_SET_TYPE_SCSI = 0x0,
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UPIU_COMMAND_SET_TYPE_UFS = 0x1,
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UPIU_COMMAND_SET_TYPE_QUERY = 0x2,
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};
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enum {
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MASK_SCSI_STATUS = 0xFF,
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MASK_TASK_RESPONSE = 0xFF00,
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MASK_RSP_UPIU_RESULT = 0xFFFF,
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};
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/* Task management service response */
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enum {
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UPIU_TASK_MANAGEMENT_FUNC_COMPL = 0x00,
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UPIU_TASK_MANAGEMENT_FUNC_NOT_SUPPORTED = 0x04,
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UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED = 0x08,
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UPIU_TASK_MANAGEMENT_FUNC_FAILED = 0x05,
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UPIU_INCORRECT_LOGICAL_UNIT_NO = 0x09,
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};
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/**
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* struct utp_upiu_header - UPIU header structure
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* @dword_0: UPIU header DW-0
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* @dword_1: UPIU header DW-1
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* @dword_2: UPIU header DW-2
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*/
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struct utp_upiu_header {
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u32 dword_0;
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u32 dword_1;
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u32 dword_2;
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};
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/**
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* struct utp_upiu_cmd - Command UPIU structure
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* @header: UPIU header structure DW-0 to DW-2
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* @data_transfer_len: Data Transfer Length DW-3
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* @cdb: Command Descriptor Block CDB DW-4 to DW-7
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*/
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struct utp_upiu_cmd {
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struct utp_upiu_header header;
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u32 exp_data_transfer_len;
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u8 cdb[MAX_CDB_SIZE];
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};
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/**
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* struct utp_upiu_rsp - Response UPIU structure
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* @header: UPIU header DW-0 to DW-2
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* @residual_transfer_count: Residual transfer count DW-3
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* @reserved: Reserved double words DW-4 to DW-7
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* @sense_data_len: Sense data length DW-8 U16
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* @sense_data: Sense data field DW-8 to DW-12
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*/
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struct utp_upiu_rsp {
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struct utp_upiu_header header;
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u32 residual_transfer_count;
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u32 reserved[4];
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u16 sense_data_len;
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u8 sense_data[18];
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};
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/**
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* struct utp_upiu_task_req - Task request UPIU structure
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* @header - UPIU header structure DW0 to DW-2
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* @input_param1: Input parameter 1 DW-3
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* @input_param2: Input parameter 2 DW-4
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* @input_param3: Input parameter 3 DW-5
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* @reserved: Reserved double words DW-6 to DW-7
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*/
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struct utp_upiu_task_req {
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struct utp_upiu_header header;
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u32 input_param1;
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u32 input_param2;
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u32 input_param3;
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u32 reserved[2];
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};
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/**
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* struct utp_upiu_task_rsp - Task Management Response UPIU structure
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* @header: UPIU header structure DW0-DW-2
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* @output_param1: Ouput parameter 1 DW3
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* @output_param2: Output parameter 2 DW4
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* @reserved: Reserved double words DW-5 to DW-7
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*/
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struct utp_upiu_task_rsp {
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struct utp_upiu_header header;
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u32 output_param1;
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u32 output_param2;
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u32 reserved[3];
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};
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#endif /* End of Header */
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