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1c2623c50d
Unlike 'GOOD' and 'CHECK CONDITION', other status values in Response UPIU may or may not contain sense data. That is returning sense data isn't obvious. So, in this case the Data Segment Length field should be checked. If a non-zero value, it means that UPIU has Sense Data in the Data Segment area. Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Tested-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Santosh Y <santoshsy@gmail.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
330 lines
8.8 KiB
C
330 lines
8.8 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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#include <linux/mutex.h>
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#include <linux/types.h>
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#define MAX_CDB_SIZE 16
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#define GENERAL_UPIU_REQUEST_SIZE 32
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#define QUERY_DESC_MAX_SIZE 256
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#define QUERY_OSF_SIZE (GENERAL_UPIU_REQUEST_SIZE - \
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(sizeof(struct utp_upiu_header)))
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#define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
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cpu_to_be32((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 = 0x16,
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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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UPIU_TRANSACTION_REJECT_UPIU = 0x3F,
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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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/* UPIU Query request function */
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enum {
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UPIU_QUERY_FUNC_STANDARD_READ_REQUEST = 0x01,
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UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST = 0x81,
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};
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/* Flag idn for Query Requests*/
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enum flag_idn {
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QUERY_FLAG_IDN_FDEVICEINIT = 0x01,
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QUERY_FLAG_IDN_BKOPS_EN = 0x04,
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};
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/* Attribute idn for Query requests */
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enum attr_idn {
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QUERY_ATTR_IDN_BKOPS_STATUS = 0x05,
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QUERY_ATTR_IDN_EE_CONTROL = 0x0D,
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QUERY_ATTR_IDN_EE_STATUS = 0x0E,
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};
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/* Exception event mask values */
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enum {
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MASK_EE_STATUS = 0xFFFF,
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MASK_EE_URGENT_BKOPS = (1 << 2),
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};
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/* Background operation status */
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enum {
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BKOPS_STATUS_NO_OP = 0x0,
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BKOPS_STATUS_NON_CRITICAL = 0x1,
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BKOPS_STATUS_PERF_IMPACT = 0x2,
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BKOPS_STATUS_CRITICAL = 0x3,
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};
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/* UTP QUERY Transaction Specific Fields OpCode */
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enum query_opcode {
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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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/* Query response result code */
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enum {
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QUERY_RESULT_SUCCESS = 0x00,
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QUERY_RESULT_NOT_READABLE = 0xF6,
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QUERY_RESULT_NOT_WRITEABLE = 0xF7,
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QUERY_RESULT_ALREADY_WRITTEN = 0xF8,
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QUERY_RESULT_INVALID_LENGTH = 0xF9,
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QUERY_RESULT_INVALID_VALUE = 0xFA,
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QUERY_RESULT_INVALID_SELECTOR = 0xFB,
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QUERY_RESULT_INVALID_INDEX = 0xFC,
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QUERY_RESULT_INVALID_IDN = 0xFD,
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QUERY_RESULT_INVALID_OPCODE = 0xFE,
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QUERY_RESULT_GENERAL_FAILURE = 0xFF,
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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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/* UTP Transfer Request Command Offset */
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#define UPIU_COMMAND_TYPE_OFFSET 28
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/* Offset of the response code in the UPIU header */
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#define UPIU_RSP_CODE_OFFSET 8
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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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MASK_QUERY_DATA_SEG_LEN = 0xFFFF,
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MASK_RSP_UPIU_DATA_SEG_LEN = 0xFFFF,
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MASK_RSP_EXCEPTION_EVENT = 0x10000,
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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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* @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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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_query - upiu request buffer structure for
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* query request.
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* @opcode: command to perform B-0
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* @idn: a value that indicates the particular type of data B-1
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* @index: Index to further identify data B-2
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* @selector: Index to further identify data B-3
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* @reserved_osf: spec reserved field B-4,5
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* @length: number of descriptor bytes to read/write B-6,7
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* @value: Attribute value to be written DW-5
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* @reserved: spec reserved DW-6,7
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*/
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struct utp_upiu_query {
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u8 opcode;
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u8 idn;
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u8 index;
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u8 selector;
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u16 reserved_osf;
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u16 length;
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u32 value;
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u32 reserved[2];
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};
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/**
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* struct utp_upiu_req - general upiu request structure
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* @header:UPIU header structure DW-0 to DW-2
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* @sc: fields structure for scsi command DW-3 to DW-7
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* @qr: fields structure for query request DW-3 to DW-7
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*/
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struct utp_upiu_req {
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struct utp_upiu_header header;
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union {
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struct utp_upiu_cmd sc;
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struct utp_upiu_query qr;
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};
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};
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/**
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* struct utp_cmd_rsp - Response UPIU structure
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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_cmd_rsp {
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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_rsp - general upiu response structure
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* @header: UPIU header structure DW-0 to DW-2
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* @sr: fields structure for scsi command DW-3 to DW-12
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* @qr: fields structure for query request DW-3 to DW-7
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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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union {
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struct utp_cmd_rsp sr;
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struct utp_upiu_query qr;
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};
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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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/**
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* struct ufs_query_req - parameters for building a query request
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* @query_func: UPIU header query function
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* @upiu_req: the query request data
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*/
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struct ufs_query_req {
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u8 query_func;
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struct utp_upiu_query upiu_req;
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};
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/**
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* struct ufs_query_resp - UPIU QUERY
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* @response: device response code
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* @upiu_res: query response data
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*/
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struct ufs_query_res {
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u8 response;
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struct utp_upiu_query upiu_res;
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};
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#endif /* End of Header */
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