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linux/drivers/scsi/ufs/ufs.h

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/*
* 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_DESC_HDR_SIZE 2
#define QUERY_OSF_SIZE (GENERAL_UPIU_REQUEST_SIZE - \
(sizeof(struct utp_upiu_header)))
#define RESPONSE_UPIU_SENSE_DATA_LENGTH 18
#define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
cpu_to_be32((byte3 << 24) | (byte2 << 16) |\
(byte1 << 8) | (byte0))
/*
* UFS device may have standard LUs and LUN id could be from 0x00 to
* 0x7F. Standard LUs use "Peripheral Device Addressing Format".
* UFS device may also have the Well Known LUs (also referred as W-LU)
* which again could be from 0x00 to 0x7F. For W-LUs, device only use
* the "Extended Addressing Format" which means the W-LUNs would be
* from 0xc100 (SCSI_W_LUN_BASE) onwards.
* This means max. LUN number reported from UFS device could be 0xC17F.
*/
#define UFS_UPIU_MAX_UNIT_NUM_ID 0x7F
#define UFS_MAX_LUNS (SCSI_W_LUN_BASE + UFS_UPIU_MAX_UNIT_NUM_ID)
#define UFS_UPIU_WLUN_ID (1 << 7)
#define UFS_UPIU_MAX_GENERAL_LUN 8
/* Well known logical unit id in LUN field of UPIU */
enum {
UFS_UPIU_REPORT_LUNS_WLUN = 0x81,
UFS_UPIU_UFS_DEVICE_WLUN = 0xD0,
UFS_UPIU_BOOT_WLUN = 0xB0,
UFS_UPIU_RPMB_WLUN = 0xC4,
};
/*
* 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_PWR_ON_WPE = 0x03,
QUERY_FLAG_IDN_BKOPS_EN = 0x04,
};
/* Attribute idn for Query requests */
enum attr_idn {
QUERY_ATTR_IDN_ACTIVE_ICC_LVL = 0x03,
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_MAX,
};
enum desc_header_offset {
QUERY_DESC_LENGTH_OFFSET = 0x00,
QUERY_DESC_DESC_TYPE_OFFSET = 0x01,
};
enum ufs_desc_max_size {
QUERY_DESC_DEVICE_MAX_SIZE = 0x40,
QUERY_DESC_CONFIGURAION_MAX_SIZE = 0x90,
QUERY_DESC_UNIT_MAX_SIZE = 0x23,
QUERY_DESC_INTERCONNECT_MAX_SIZE = 0x06,
/*
* Max. 126 UNICODE characters (2 bytes per character) plus 2 bytes
* of descriptor header.
*/
QUERY_DESC_STRING_MAX_SIZE = 0xFE,
QUERY_DESC_GEOMETRY_MAX_SIZE = 0x44,
QUERY_DESC_POWER_MAX_SIZE = 0x62,
QUERY_DESC_RFU_MAX_SIZE = 0x00,
};
/* 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,
};
/* Device descriptor parameters offsets in bytes*/
enum device_desc_param {
DEVICE_DESC_PARAM_LEN = 0x0,
DEVICE_DESC_PARAM_TYPE = 0x1,
DEVICE_DESC_PARAM_DEVICE_TYPE = 0x2,
DEVICE_DESC_PARAM_DEVICE_CLASS = 0x3,
DEVICE_DESC_PARAM_DEVICE_SUB_CLASS = 0x4,
DEVICE_DESC_PARAM_PRTCL = 0x5,
DEVICE_DESC_PARAM_NUM_LU = 0x6,
DEVICE_DESC_PARAM_NUM_WLU = 0x7,
DEVICE_DESC_PARAM_BOOT_ENBL = 0x8,
DEVICE_DESC_PARAM_DESC_ACCSS_ENBL = 0x9,
DEVICE_DESC_PARAM_INIT_PWR_MODE = 0xA,
DEVICE_DESC_PARAM_HIGH_PR_LUN = 0xB,
DEVICE_DESC_PARAM_SEC_RMV_TYPE = 0xC,
DEVICE_DESC_PARAM_SEC_LU = 0xD,
DEVICE_DESC_PARAM_BKOP_TERM_LT = 0xE,
DEVICE_DESC_PARAM_ACTVE_ICC_LVL = 0xF,
DEVICE_DESC_PARAM_SPEC_VER = 0x10,
DEVICE_DESC_PARAM_MANF_DATE = 0x12,
DEVICE_DESC_PARAM_MANF_NAME = 0x14,
DEVICE_DESC_PARAM_PRDCT_NAME = 0x15,
DEVICE_DESC_PARAM_SN = 0x16,
DEVICE_DESC_PARAM_OEM_ID = 0x17,
DEVICE_DESC_PARAM_MANF_ID = 0x18,
DEVICE_DESC_PARAM_UD_OFFSET = 0x1A,
DEVICE_DESC_PARAM_UD_LEN = 0x1B,
DEVICE_DESC_PARAM_RTT_CAP = 0x1C,
DEVICE_DESC_PARAM_FRQ_RTC = 0x1D,
};
/*
* Logical Unit Write Protect
* 00h: LU not write protected
* 01h: LU write protected when fPowerOnWPEn =1
* 02h: LU permanently write protected when fPermanentWPEn =1
*/
enum ufs_lu_wp_type {
UFS_LU_NO_WP = 0x00,
UFS_LU_POWER_ON_WP = 0x01,
UFS_LU_PERM_WP = 0x02,
};
/* bActiveICCLevel parameter current units */
enum {
UFSHCD_NANO_AMP = 0,
UFSHCD_MICRO_AMP = 1,
UFSHCD_MILI_AMP = 2,
UFSHCD_AMP = 3,
};
#define POWER_DESC_MAX_SIZE 0x62
#define POWER_DESC_MAX_ACTV_ICC_LVLS 16
/* Attribute bActiveICCLevel parameter bit masks definitions */
#define ATTR_ICC_LVL_UNIT_OFFSET 14
#define ATTR_ICC_LVL_UNIT_MASK (0x3 << ATTR_ICC_LVL_UNIT_OFFSET)
#define ATTR_ICC_LVL_VALUE_MASK 0x3FF
/* Power descriptor parameters offsets in bytes */
enum power_desc_param_offset {
PWR_DESC_LEN = 0x0,
PWR_DESC_TYPE = 0x1,
PWR_DESC_ACTIVE_LVLS_VCC_0 = 0x2,
PWR_DESC_ACTIVE_LVLS_VCCQ_0 = 0x22,
PWR_DESC_ACTIVE_LVLS_VCCQ2_0 = 0x42,
};
/* Exception event mask values */
enum {
MASK_EE_STATUS = 0xFFFF,
MASK_EE_URGENT_BKOPS = (1 << 2),
};
/* Background operation status */
enum bkops_status {
BKOPS_STATUS_NO_OP = 0x0,
BKOPS_STATUS_NON_CRITICAL = 0x1,
BKOPS_STATUS_PERF_IMPACT = 0x2,
BKOPS_STATUS_CRITICAL = 0x3,
BKOPS_STATUS_MAX = BKOPS_STATUS_CRITICAL,
};
/* 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,
MASK_TM_SERVICE_RESP = 0xFF,
};
/* 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,
};
/* UFS device power modes */
enum ufs_dev_pwr_mode {
UFS_ACTIVE_PWR_MODE = 1,
UFS_SLEEP_PWR_MODE = 2,
UFS_POWERDOWN_PWR_MODE = 3,
};
/**
* 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[RESPONSE_UPIU_SENSE_DATA_LENGTH];
};
/**
* 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;
};
#define UFS_VREG_VCC_MIN_UV 2700000 /* uV */
#define UFS_VREG_VCC_MAX_UV 3600000 /* uV */
#define UFS_VREG_VCC_1P8_MIN_UV 1700000 /* uV */
#define UFS_VREG_VCC_1P8_MAX_UV 1950000 /* uV */
#define UFS_VREG_VCCQ_MIN_UV 1100000 /* uV */
#define UFS_VREG_VCCQ_MAX_UV 1300000 /* uV */
#define UFS_VREG_VCCQ2_MIN_UV 1650000 /* uV */
#define UFS_VREG_VCCQ2_MAX_UV 1950000 /* uV */
/*
* VCCQ & VCCQ2 current requirement when UFS device is in sleep state
* and link is in Hibern8 state.
*/
#define UFS_VREG_LPM_LOAD_UA 1000 /* uA */
struct ufs_vreg {
struct regulator *reg;
const char *name;
bool enabled;
bool unused;
int min_uV;
int max_uV;
int min_uA;
int max_uA;
};
struct ufs_vreg_info {
struct ufs_vreg *vcc;
struct ufs_vreg *vccq;
struct ufs_vreg *vccq2;
struct ufs_vreg *vdd_hba;
};
struct ufs_dev_info {
bool f_power_on_wp_en;
/* Keeps information if any of the LU is power on write protected */
bool is_lu_power_on_wp;
};
#endif /* End of Header */
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