drivers/scsi/ufs/ufs.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Universal Flash Storage Host controller driver
   4  * Copyright (C) 2011-2013 Samsung India Software Operations
   5  *
   6  * Authors:
   7  *      Santosh Yaraganavi <santosh.sy@samsung.com>
   8  *      Vinayak Holikatti <h.vinayak@samsung.com>
   9  */
  10
  11 #ifndef _UFS_H
  12 #define _UFS_H
  13
  14 #include <linux/mutex.h>
  15 #include <linux/types.h>
  16 #include <uapi/scsi/scsi_bsg_ufs.h>
  17
  18 #define GENERAL_UPIU_REQUEST_SIZE (sizeof(struct utp_upiu_req))
  19 #define QUERY_DESC_MAX_SIZE       255
  20 #define QUERY_DESC_MIN_SIZE       2
  21 #define QUERY_DESC_HDR_SIZE       2
  22 #define QUERY_OSF_SIZE            (GENERAL_UPIU_REQUEST_SIZE - \
  23                                         (sizeof(struct utp_upiu_header)))
  24 #define UFS_SENSE_SIZE  18
  25
  26 #define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
  27                         cpu_to_be32((byte3 << 24) | (byte2 << 16) |\
  28                          (byte1 << 8) | (byte0))
  29 /*
  30  * UFS device may have standard LUs and LUN id could be from 0x00 to
  31  * 0x7F. Standard LUs use "Peripheral Device Addressing Format".
  32  * UFS device may also have the Well Known LUs (also referred as W-LU)
  33  * which again could be from 0x00 to 0x7F. For W-LUs, device only use
  34  * the "Extended Addressing Format" which means the W-LUNs would be
  35  * from 0xc100 (SCSI_W_LUN_BASE) onwards.
  36  * This means max. LUN number reported from UFS device could be 0xC17F.
  37  */
  38 #define UFS_UPIU_MAX_UNIT_NUM_ID        0x7F
  39 #define UFS_MAX_LUNS            (SCSI_W_LUN_BASE + UFS_UPIU_MAX_UNIT_NUM_ID)
  40 #define UFS_UPIU_WLUN_ID        (1 << 7)
  41 #define UFS_RPMB_UNIT           0xC4
  42
  43 /* WriteBooster buffer is available only for the logical unit from 0 to 7 */
  44 #define UFS_UPIU_MAX_WB_LUN_ID  8
  45
  46 /* Well known logical unit id in LUN field of UPIU */
  47 enum {
  48         UFS_UPIU_REPORT_LUNS_WLUN       = 0x81,
  49         UFS_UPIU_UFS_DEVICE_WLUN        = 0xD0,
  50         UFS_UPIU_BOOT_WLUN              = 0xB0,
  51         UFS_UPIU_RPMB_WLUN              = 0xC4,
  52 };
  53
  54 /*
  55  * UFS Protocol Information Unit related definitions
  56  */
  57
  58 /* Task management functions */
  59 enum {
  60         UFS_ABORT_TASK          = 0x01,
  61         UFS_ABORT_TASK_SET      = 0x02,
  62         UFS_CLEAR_TASK_SET      = 0x04,
  63         UFS_LOGICAL_RESET       = 0x08,
  64         UFS_QUERY_TASK          = 0x80,
  65         UFS_QUERY_TASK_SET      = 0x81,
  66 };
  67
  68 /* UTP UPIU Transaction Codes Initiator to Target */
  69 enum {
  70         UPIU_TRANSACTION_NOP_OUT        = 0x00,
  71         UPIU_TRANSACTION_COMMAND        = 0x01,
  72         UPIU_TRANSACTION_DATA_OUT       = 0x02,
  73         UPIU_TRANSACTION_TASK_REQ       = 0x04,
  74         UPIU_TRANSACTION_QUERY_REQ      = 0x16,
  75 };
  76
  77 /* UTP UPIU Transaction Codes Target to Initiator */
  78 enum {
  79         UPIU_TRANSACTION_NOP_IN         = 0x20,
  80         UPIU_TRANSACTION_RESPONSE       = 0x21,
  81         UPIU_TRANSACTION_DATA_IN        = 0x22,
  82         UPIU_TRANSACTION_TASK_RSP       = 0x24,
  83         UPIU_TRANSACTION_READY_XFER     = 0x31,
  84         UPIU_TRANSACTION_QUERY_RSP      = 0x36,
  85         UPIU_TRANSACTION_REJECT_UPIU    = 0x3F,
  86 };
  87
  88 /* UPIU Read/Write flags */
  89 enum {
  90         UPIU_CMD_FLAGS_NONE     = 0x00,
  91         UPIU_CMD_FLAGS_WRITE    = 0x20,
  92         UPIU_CMD_FLAGS_READ     = 0x40,
  93 };
  94
  95 /* UPIU Task Attributes */
  96 enum {
  97         UPIU_TASK_ATTR_SIMPLE   = 0x00,
  98         UPIU_TASK_ATTR_ORDERED  = 0x01,
  99         UPIU_TASK_ATTR_HEADQ    = 0x02,
 100         UPIU_TASK_ATTR_ACA      = 0x03,
 101 };
 102
 103 /* UPIU Query request function */
 104 enum {
 105         UPIU_QUERY_FUNC_STANDARD_READ_REQUEST           = 0x01,
 106         UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST          = 0x81,
 107 };
 108
 109 /* Flag idn for Query Requests*/
 110 enum flag_idn {
 111         QUERY_FLAG_IDN_FDEVICEINIT                      = 0x01,
 112         QUERY_FLAG_IDN_PERMANENT_WPE                    = 0x02,
 113         QUERY_FLAG_IDN_PWR_ON_WPE                       = 0x03,
 114         QUERY_FLAG_IDN_BKOPS_EN                         = 0x04,
 115         QUERY_FLAG_IDN_LIFE_SPAN_MODE_ENABLE            = 0x05,
 116         QUERY_FLAG_IDN_PURGE_ENABLE                     = 0x06,
 117         QUERY_FLAG_IDN_RESERVED2                        = 0x07,
 118         QUERY_FLAG_IDN_FPHYRESOURCEREMOVAL              = 0x08,
 119         QUERY_FLAG_IDN_BUSY_RTC                         = 0x09,
 120         QUERY_FLAG_IDN_RESERVED3                        = 0x0A,
 121         QUERY_FLAG_IDN_PERMANENTLY_DISABLE_FW_UPDATE    = 0x0B,
 122         QUERY_FLAG_IDN_WB_EN                            = 0x0E,
 123         QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN                 = 0x0F,
 124         QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8     = 0x10,
 125         QUERY_FLAG_IDN_HPB_RESET                        = 0x11,
 126         QUERY_FLAG_IDN_HPB_EN                           = 0x12,
 127 };
 128
 129 /* Attribute idn for Query requests */
 130 enum attr_idn {
 131         QUERY_ATTR_IDN_BOOT_LU_EN               = 0x00,
 132         QUERY_ATTR_IDN_MAX_HPB_SINGLE_CMD       = 0x01,
 133         QUERY_ATTR_IDN_POWER_MODE               = 0x02,
 134         QUERY_ATTR_IDN_ACTIVE_ICC_LVL           = 0x03,
 135         QUERY_ATTR_IDN_OOO_DATA_EN              = 0x04,
 136         QUERY_ATTR_IDN_BKOPS_STATUS             = 0x05,
 137         QUERY_ATTR_IDN_PURGE_STATUS             = 0x06,
 138         QUERY_ATTR_IDN_MAX_DATA_IN              = 0x07,
 139         QUERY_ATTR_IDN_MAX_DATA_OUT             = 0x08,
 140         QUERY_ATTR_IDN_DYN_CAP_NEEDED           = 0x09,
 141         QUERY_ATTR_IDN_REF_CLK_FREQ             = 0x0A,
 142         QUERY_ATTR_IDN_CONF_DESC_LOCK           = 0x0B,
 143         QUERY_ATTR_IDN_MAX_NUM_OF_RTT           = 0x0C,
 144         QUERY_ATTR_IDN_EE_CONTROL               = 0x0D,
 145         QUERY_ATTR_IDN_EE_STATUS                = 0x0E,
 146         QUERY_ATTR_IDN_SECONDS_PASSED           = 0x0F,
 147         QUERY_ATTR_IDN_CNTX_CONF                = 0x10,
 148         QUERY_ATTR_IDN_CORR_PRG_BLK_NUM         = 0x11,
 149         QUERY_ATTR_IDN_RESERVED2                = 0x12,
 150         QUERY_ATTR_IDN_RESERVED3                = 0x13,
 151         QUERY_ATTR_IDN_FFU_STATUS               = 0x14,
 152         QUERY_ATTR_IDN_PSA_STATE                = 0x15,
 153         QUERY_ATTR_IDN_PSA_DATA_SIZE            = 0x16,
 154         QUERY_ATTR_IDN_REF_CLK_GATING_WAIT_TIME = 0x17,
 155         QUERY_ATTR_IDN_WB_FLUSH_STATUS          = 0x1C,
 156         QUERY_ATTR_IDN_AVAIL_WB_BUFF_SIZE       = 0x1D,
 157         QUERY_ATTR_IDN_WB_BUFF_LIFE_TIME_EST    = 0x1E,
 158         QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE        = 0x1F,
 159 };
 160
 161 /* Descriptor idn for Query requests */
 162 enum desc_idn {
 163         QUERY_DESC_IDN_DEVICE           = 0x0,
 164         QUERY_DESC_IDN_CONFIGURATION    = 0x1,
 165         QUERY_DESC_IDN_UNIT             = 0x2,
 166         QUERY_DESC_IDN_RFU_0            = 0x3,
 167         QUERY_DESC_IDN_INTERCONNECT     = 0x4,
 168         QUERY_DESC_IDN_STRING           = 0x5,
 169         QUERY_DESC_IDN_RFU_1            = 0x6,
 170         QUERY_DESC_IDN_GEOMETRY         = 0x7,
 171         QUERY_DESC_IDN_POWER            = 0x8,
 172         QUERY_DESC_IDN_HEALTH           = 0x9,
 173         QUERY_DESC_IDN_MAX,
 174 };
 175
 176 enum desc_header_offset {
 177         QUERY_DESC_LENGTH_OFFSET        = 0x00,
 178         QUERY_DESC_DESC_TYPE_OFFSET     = 0x01,
 179 };
 180
 181 /* Unit descriptor parameters offsets in bytes*/
 182 enum unit_desc_param {
 183         UNIT_DESC_PARAM_LEN                     = 0x0,
 184         UNIT_DESC_PARAM_TYPE                    = 0x1,
 185         UNIT_DESC_PARAM_UNIT_INDEX              = 0x2,
 186         UNIT_DESC_PARAM_LU_ENABLE               = 0x3,
 187         UNIT_DESC_PARAM_BOOT_LUN_ID             = 0x4,
 188         UNIT_DESC_PARAM_LU_WR_PROTECT           = 0x5,
 189         UNIT_DESC_PARAM_LU_Q_DEPTH              = 0x6,
 190         UNIT_DESC_PARAM_PSA_SENSITIVE           = 0x7,
 191         UNIT_DESC_PARAM_MEM_TYPE                = 0x8,
 192         UNIT_DESC_PARAM_DATA_RELIABILITY        = 0x9,
 193         UNIT_DESC_PARAM_LOGICAL_BLK_SIZE        = 0xA,
 194         UNIT_DESC_PARAM_LOGICAL_BLK_COUNT       = 0xB,
 195         UNIT_DESC_PARAM_ERASE_BLK_SIZE          = 0x13,
 196         UNIT_DESC_PARAM_PROVISIONING_TYPE       = 0x17,
 197         UNIT_DESC_PARAM_PHY_MEM_RSRC_CNT        = 0x18,
 198         UNIT_DESC_PARAM_CTX_CAPABILITIES        = 0x20,
 199         UNIT_DESC_PARAM_LARGE_UNIT_SIZE_M1      = 0x22,
 200         UNIT_DESC_PARAM_HPB_LU_MAX_ACTIVE_RGNS  = 0x23,
 201         UNIT_DESC_PARAM_HPB_PIN_RGN_START_OFF   = 0x25,
 202         UNIT_DESC_PARAM_HPB_NUM_PIN_RGNS        = 0x27,
 203         UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS      = 0x29,
 204 };
 205
 206 /* Device descriptor parameters offsets in bytes*/
 207 enum device_desc_param {
 208         DEVICE_DESC_PARAM_LEN                   = 0x0,
 209         DEVICE_DESC_PARAM_TYPE                  = 0x1,
 210         DEVICE_DESC_PARAM_DEVICE_TYPE           = 0x2,
 211         DEVICE_DESC_PARAM_DEVICE_CLASS          = 0x3,
 212         DEVICE_DESC_PARAM_DEVICE_SUB_CLASS      = 0x4,
 213         DEVICE_DESC_PARAM_PRTCL                 = 0x5,
 214         DEVICE_DESC_PARAM_NUM_LU                = 0x6,
 215         DEVICE_DESC_PARAM_NUM_WLU               = 0x7,
 216         DEVICE_DESC_PARAM_BOOT_ENBL             = 0x8,
 217         DEVICE_DESC_PARAM_DESC_ACCSS_ENBL       = 0x9,
 218         DEVICE_DESC_PARAM_INIT_PWR_MODE         = 0xA,
 219         DEVICE_DESC_PARAM_HIGH_PR_LUN           = 0xB,
 220         DEVICE_DESC_PARAM_SEC_RMV_TYPE          = 0xC,
 221         DEVICE_DESC_PARAM_SEC_LU                = 0xD,
 222         DEVICE_DESC_PARAM_BKOP_TERM_LT          = 0xE,
 223         DEVICE_DESC_PARAM_ACTVE_ICC_LVL         = 0xF,
 224         DEVICE_DESC_PARAM_SPEC_VER              = 0x10,
 225         DEVICE_DESC_PARAM_MANF_DATE             = 0x12,
 226         DEVICE_DESC_PARAM_MANF_NAME             = 0x14,
 227         DEVICE_DESC_PARAM_PRDCT_NAME            = 0x15,
 228         DEVICE_DESC_PARAM_SN                    = 0x16,
 229         DEVICE_DESC_PARAM_OEM_ID                = 0x17,
 230         DEVICE_DESC_PARAM_MANF_ID               = 0x18,
 231         DEVICE_DESC_PARAM_UD_OFFSET             = 0x1A,
 232         DEVICE_DESC_PARAM_UD_LEN                = 0x1B,
 233         DEVICE_DESC_PARAM_RTT_CAP               = 0x1C,
 234         DEVICE_DESC_PARAM_FRQ_RTC               = 0x1D,
 235         DEVICE_DESC_PARAM_UFS_FEAT              = 0x1F,
 236         DEVICE_DESC_PARAM_FFU_TMT               = 0x20,
 237         DEVICE_DESC_PARAM_Q_DPTH                = 0x21,
 238         DEVICE_DESC_PARAM_DEV_VER               = 0x22,
 239         DEVICE_DESC_PARAM_NUM_SEC_WPA           = 0x24,
 240         DEVICE_DESC_PARAM_PSA_MAX_DATA          = 0x25,
 241         DEVICE_DESC_PARAM_PSA_TMT               = 0x29,
 242         DEVICE_DESC_PARAM_PRDCT_REV             = 0x2A,
 243         DEVICE_DESC_PARAM_HPB_VER               = 0x40,
 244         DEVICE_DESC_PARAM_HPB_CONTROL           = 0x42,
 245         DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP   = 0x4F,
 246         DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN   = 0x53,
 247         DEVICE_DESC_PARAM_WB_TYPE               = 0x54,
 248         DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS = 0x55,
 249 };
 250
 251 /* Interconnect descriptor parameters offsets in bytes*/
 252 enum interconnect_desc_param {
 253         INTERCONNECT_DESC_PARAM_LEN             = 0x0,
 254         INTERCONNECT_DESC_PARAM_TYPE            = 0x1,
 255         INTERCONNECT_DESC_PARAM_UNIPRO_VER      = 0x2,
 256         INTERCONNECT_DESC_PARAM_MPHY_VER        = 0x4,
 257 };
 258
 259 /* Geometry descriptor parameters offsets in bytes*/
 260 enum geometry_desc_param {
 261         GEOMETRY_DESC_PARAM_LEN                 = 0x0,
 262         GEOMETRY_DESC_PARAM_TYPE                = 0x1,
 263         GEOMETRY_DESC_PARAM_DEV_CAP             = 0x4,
 264         GEOMETRY_DESC_PARAM_MAX_NUM_LUN         = 0xC,
 265         GEOMETRY_DESC_PARAM_SEG_SIZE            = 0xD,
 266         GEOMETRY_DESC_PARAM_ALLOC_UNIT_SIZE     = 0x11,
 267         GEOMETRY_DESC_PARAM_MIN_BLK_SIZE        = 0x12,
 268         GEOMETRY_DESC_PARAM_OPT_RD_BLK_SIZE     = 0x13,
 269         GEOMETRY_DESC_PARAM_OPT_WR_BLK_SIZE     = 0x14,
 270         GEOMETRY_DESC_PARAM_MAX_IN_BUF_SIZE     = 0x15,
 271         GEOMETRY_DESC_PARAM_MAX_OUT_BUF_SIZE    = 0x16,
 272         GEOMETRY_DESC_PARAM_RPMB_RW_SIZE        = 0x17,
 273         GEOMETRY_DESC_PARAM_DYN_CAP_RSRC_PLC    = 0x18,
 274         GEOMETRY_DESC_PARAM_DATA_ORDER          = 0x19,
 275         GEOMETRY_DESC_PARAM_MAX_NUM_CTX         = 0x1A,
 276         GEOMETRY_DESC_PARAM_TAG_UNIT_SIZE       = 0x1B,
 277         GEOMETRY_DESC_PARAM_TAG_RSRC_SIZE       = 0x1C,
 278         GEOMETRY_DESC_PARAM_SEC_RM_TYPES        = 0x1D,
 279         GEOMETRY_DESC_PARAM_MEM_TYPES           = 0x1E,
 280         GEOMETRY_DESC_PARAM_SCM_MAX_NUM_UNITS   = 0x20,
 281         GEOMETRY_DESC_PARAM_SCM_CAP_ADJ_FCTR    = 0x24,
 282         GEOMETRY_DESC_PARAM_NPM_MAX_NUM_UNITS   = 0x26,
 283         GEOMETRY_DESC_PARAM_NPM_CAP_ADJ_FCTR    = 0x2A,
 284         GEOMETRY_DESC_PARAM_ENM1_MAX_NUM_UNITS  = 0x2C,
 285         GEOMETRY_DESC_PARAM_ENM1_CAP_ADJ_FCTR   = 0x30,
 286         GEOMETRY_DESC_PARAM_ENM2_MAX_NUM_UNITS  = 0x32,
 287         GEOMETRY_DESC_PARAM_ENM2_CAP_ADJ_FCTR   = 0x36,
 288         GEOMETRY_DESC_PARAM_ENM3_MAX_NUM_UNITS  = 0x38,
 289         GEOMETRY_DESC_PARAM_ENM3_CAP_ADJ_FCTR   = 0x3C,
 290         GEOMETRY_DESC_PARAM_ENM4_MAX_NUM_UNITS  = 0x3E,
 291         GEOMETRY_DESC_PARAM_ENM4_CAP_ADJ_FCTR   = 0x42,
 292         GEOMETRY_DESC_PARAM_OPT_LOG_BLK_SIZE    = 0x44,
 293         GEOMETRY_DESC_PARAM_HPB_REGION_SIZE     = 0x48,
 294         GEOMETRY_DESC_PARAM_HPB_NUMBER_LU       = 0x49,
 295         GEOMETRY_DESC_PARAM_HPB_SUBREGION_SIZE  = 0x4A,
 296         GEOMETRY_DESC_PARAM_HPB_MAX_ACTIVE_REGS = 0x4B,
 297         GEOMETRY_DESC_PARAM_WB_MAX_ALLOC_UNITS  = 0x4F,
 298         GEOMETRY_DESC_PARAM_WB_MAX_WB_LUNS      = 0x53,
 299         GEOMETRY_DESC_PARAM_WB_BUFF_CAP_ADJ     = 0x54,
 300         GEOMETRY_DESC_PARAM_WB_SUP_RED_TYPE     = 0x55,
 301         GEOMETRY_DESC_PARAM_WB_SUP_WB_TYPE      = 0x56,
 302 };
 303
 304 /* Health descriptor parameters offsets in bytes*/
 305 enum health_desc_param {
 306         HEALTH_DESC_PARAM_LEN                   = 0x0,
 307         HEALTH_DESC_PARAM_TYPE                  = 0x1,
 308         HEALTH_DESC_PARAM_EOL_INFO              = 0x2,
 309         HEALTH_DESC_PARAM_LIFE_TIME_EST_A       = 0x3,
 310         HEALTH_DESC_PARAM_LIFE_TIME_EST_B       = 0x4,
 311 };
 312
 313 /* WriteBooster buffer mode */
 314 enum {
 315         WB_BUF_MODE_LU_DEDICATED        = 0x0,
 316         WB_BUF_MODE_SHARED              = 0x1,
 317 };
 318
 319 /*
 320  * Logical Unit Write Protect
 321  * 00h: LU not write protected
 322  * 01h: LU write protected when fPowerOnWPEn =1
 323  * 02h: LU permanently write protected when fPermanentWPEn =1
 324  */
 325 enum ufs_lu_wp_type {
 326         UFS_LU_NO_WP            = 0x00,
 327         UFS_LU_POWER_ON_WP      = 0x01,
 328         UFS_LU_PERM_WP          = 0x02,
 329 };
 330
 331 /* bActiveICCLevel parameter current units */
 332 enum {
 333         UFSHCD_NANO_AMP         = 0,
 334         UFSHCD_MICRO_AMP        = 1,
 335         UFSHCD_MILI_AMP         = 2,
 336         UFSHCD_AMP              = 3,
 337 };
 338
 339 /* Possible values for dExtendedUFSFeaturesSupport */
 340 enum {
 341         UFS_DEV_HPB_SUPPORT             = BIT(7),
 342         UFS_DEV_WRITE_BOOSTER_SUP       = BIT(8),
 343 };
 344 #define UFS_DEV_HPB_SUPPORT_VERSION             0x310
 345
 346 #define POWER_DESC_MAX_ACTV_ICC_LVLS            16
 347
 348 /* Attribute  bActiveICCLevel parameter bit masks definitions */
 349 #define ATTR_ICC_LVL_UNIT_OFFSET        14
 350 #define ATTR_ICC_LVL_UNIT_MASK          (0x3 << ATTR_ICC_LVL_UNIT_OFFSET)
 351 #define ATTR_ICC_LVL_VALUE_MASK         0x3FF
 352
 353 /* Power descriptor parameters offsets in bytes */
 354 enum power_desc_param_offset {
 355         PWR_DESC_LEN                    = 0x0,
 356         PWR_DESC_TYPE                   = 0x1,
 357         PWR_DESC_ACTIVE_LVLS_VCC_0      = 0x2,
 358         PWR_DESC_ACTIVE_LVLS_VCCQ_0     = 0x22,
 359         PWR_DESC_ACTIVE_LVLS_VCCQ2_0    = 0x42,
 360 };
 361
 362 /* Exception event mask values */
 363 enum {
 364         MASK_EE_STATUS                  = 0xFFFF,
 365         MASK_EE_DYNCAP_EVENT            = BIT(0),
 366         MASK_EE_SYSPOOL_EVENT           = BIT(1),
 367         MASK_EE_URGENT_BKOPS            = BIT(2),
 368         MASK_EE_TOO_HIGH_TEMP           = BIT(3),
 369         MASK_EE_TOO_LOW_TEMP            = BIT(4),
 370         MASK_EE_WRITEBOOSTER_EVENT      = BIT(5),
 371         MASK_EE_PERFORMANCE_THROTTLING  = BIT(6),
 372 };
 373
 374 /* Background operation status */
 375 enum bkops_status {
 376         BKOPS_STATUS_NO_OP               = 0x0,
 377         BKOPS_STATUS_NON_CRITICAL        = 0x1,
 378         BKOPS_STATUS_PERF_IMPACT         = 0x2,
 379         BKOPS_STATUS_CRITICAL            = 0x3,
 380         BKOPS_STATUS_MAX                 = BKOPS_STATUS_CRITICAL,
 381 };
 382
 383 /* UTP QUERY Transaction Specific Fields OpCode */
 384 enum query_opcode {
 385         UPIU_QUERY_OPCODE_NOP           = 0x0,
 386         UPIU_QUERY_OPCODE_READ_DESC     = 0x1,
 387         UPIU_QUERY_OPCODE_WRITE_DESC    = 0x2,
 388         UPIU_QUERY_OPCODE_READ_ATTR     = 0x3,
 389         UPIU_QUERY_OPCODE_WRITE_ATTR    = 0x4,
 390         UPIU_QUERY_OPCODE_READ_FLAG     = 0x5,
 391         UPIU_QUERY_OPCODE_SET_FLAG      = 0x6,
 392         UPIU_QUERY_OPCODE_CLEAR_FLAG    = 0x7,
 393         UPIU_QUERY_OPCODE_TOGGLE_FLAG   = 0x8,
 394 };
 395
 396 /* bRefClkFreq attribute values */
 397 enum ufs_ref_clk_freq {
 398         REF_CLK_FREQ_19_2_MHZ   = 0,
 399         REF_CLK_FREQ_26_MHZ     = 1,
 400         REF_CLK_FREQ_38_4_MHZ   = 2,
 401         REF_CLK_FREQ_52_MHZ     = 3,
 402         REF_CLK_FREQ_INVAL      = -1,
 403 };
 404
 405 struct ufs_ref_clk {
 406         unsigned long freq_hz;
 407         enum ufs_ref_clk_freq val;
 408 };
 409
 410 /* Query response result code */
 411 enum {
 412         QUERY_RESULT_SUCCESS                    = 0x00,
 413         QUERY_RESULT_NOT_READABLE               = 0xF6,
 414         QUERY_RESULT_NOT_WRITEABLE              = 0xF7,
 415         QUERY_RESULT_ALREADY_WRITTEN            = 0xF8,
 416         QUERY_RESULT_INVALID_LENGTH             = 0xF9,
 417         QUERY_RESULT_INVALID_VALUE              = 0xFA,
 418         QUERY_RESULT_INVALID_SELECTOR           = 0xFB,
 419         QUERY_RESULT_INVALID_INDEX              = 0xFC,
 420         QUERY_RESULT_INVALID_IDN                = 0xFD,
 421         QUERY_RESULT_INVALID_OPCODE             = 0xFE,
 422         QUERY_RESULT_GENERAL_FAILURE            = 0xFF,
 423 };
 424
 425 /* UTP Transfer Request Command Type (CT) */
 426 enum {
 427         UPIU_COMMAND_SET_TYPE_SCSI      = 0x0,
 428         UPIU_COMMAND_SET_TYPE_UFS       = 0x1,
 429         UPIU_COMMAND_SET_TYPE_QUERY     = 0x2,
 430 };
 431
 432 /* UTP Transfer Request Command Offset */
 433 #define UPIU_COMMAND_TYPE_OFFSET        28
 434
 435 /* Offset of the response code in the UPIU header */
 436 #define UPIU_RSP_CODE_OFFSET            8
 437
 438 enum {
 439         MASK_SCSI_STATUS                = 0xFF,
 440         MASK_TASK_RESPONSE              = 0xFF00,
 441         MASK_RSP_UPIU_RESULT            = 0xFFFF,
 442         MASK_QUERY_DATA_SEG_LEN         = 0xFFFF,
 443         MASK_RSP_UPIU_DATA_SEG_LEN      = 0xFFFF,
 444         MASK_RSP_EXCEPTION_EVENT        = 0x10000,
 445         MASK_TM_SERVICE_RESP            = 0xFF,
 446         MASK_TM_FUNC                    = 0xFF,
 447 };
 448
 449 /* Task management service response */
 450 enum {
 451         UPIU_TASK_MANAGEMENT_FUNC_COMPL         = 0x00,
 452         UPIU_TASK_MANAGEMENT_FUNC_NOT_SUPPORTED = 0x04,
 453         UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED     = 0x08,
 454         UPIU_TASK_MANAGEMENT_FUNC_FAILED        = 0x05,
 455         UPIU_INCORRECT_LOGICAL_UNIT_NO          = 0x09,
 456 };
 457
 458 /* UFS device power modes */
 459 enum ufs_dev_pwr_mode {
 460         UFS_ACTIVE_PWR_MODE     = 1,
 461         UFS_SLEEP_PWR_MODE      = 2,
 462         UFS_POWERDOWN_PWR_MODE  = 3,
 463         UFS_DEEPSLEEP_PWR_MODE  = 4,
 464 };
 465
 466 #define UFS_WB_BUF_REMAIN_PERCENT(val) ((val) / 10)
 467
 468 /**
 469  * struct utp_cmd_rsp - Response UPIU structure
 470  * @residual_transfer_count: Residual transfer count DW-3
 471  * @reserved: Reserved double words DW-4 to DW-7
 472  * @sense_data_len: Sense data length DW-8 U16
 473  * @sense_data: Sense data field DW-8 to DW-12
 474  */
 475 struct utp_cmd_rsp {
 476         __be32 residual_transfer_count;
 477         __be32 reserved[4];
 478         __be16 sense_data_len;
 479         u8 sense_data[UFS_SENSE_SIZE];
 480 };
 481
 482 struct ufshpb_active_field {
 483         __be16 active_rgn;
 484         __be16 active_srgn;
 485 };
 486 #define HPB_ACT_FIELD_SIZE 4
 487
 488 /**
 489  * struct utp_hpb_rsp - Response UPIU structure
 490  * @residual_transfer_count: Residual transfer count DW-3
 491  * @reserved1: Reserved double words DW-4 to DW-7
 492  * @sense_data_len: Sense data length DW-8 U16
 493  * @desc_type: Descriptor type of sense data
 494  * @additional_len: Additional length of sense data
 495  * @hpb_op: HPB operation type
 496  * @lun: LUN of response UPIU
 497  * @active_rgn_cnt: Active region count
 498  * @inactive_rgn_cnt: Inactive region count
 499  * @hpb_active_field: Recommended to read HPB region and subregion
 500  * @hpb_inactive_field: To be inactivated HPB region and subregion
 501  */
 502 struct utp_hpb_rsp {
 503         __be32 residual_transfer_count;
 504         __be32 reserved1[4];
 505         __be16 sense_data_len;
 506         u8 desc_type;
 507         u8 additional_len;
 508         u8 hpb_op;
 509         u8 lun;
 510         u8 active_rgn_cnt;
 511         u8 inactive_rgn_cnt;
 512         struct ufshpb_active_field hpb_active_field[2];
 513         __be16 hpb_inactive_field[2];
 514 };
 515 #define UTP_HPB_RSP_SIZE 40
 516
 517 /**
 518  * struct utp_upiu_rsp - general upiu response structure
 519  * @header: UPIU header structure DW-0 to DW-2
 520  * @sr: fields structure for scsi command DW-3 to DW-12
 521  * @qr: fields structure for query request DW-3 to DW-7
 522  */
 523 struct utp_upiu_rsp {
 524         struct utp_upiu_header header;
 525         union {
 526                 struct utp_cmd_rsp sr;
 527                 struct utp_hpb_rsp hr;
 528                 struct utp_upiu_query qr;
 529         };
 530 };
 531
 532 /**
 533  * struct ufs_query_req - parameters for building a query request
 534  * @query_func: UPIU header query function
 535  * @upiu_req: the query request data
 536  */
 537 struct ufs_query_req {
 538         u8 query_func;
 539         struct utp_upiu_query upiu_req;
 540 };
 541
 542 /**
 543  * struct ufs_query_resp - UPIU QUERY
 544  * @response: device response code
 545  * @upiu_res: query response data
 546  */
 547 struct ufs_query_res {
 548         u8 response;
 549         struct utp_upiu_query upiu_res;
 550 };
 551
 552 #define UFS_VREG_VCC_MIN_UV        2700000 /* uV */
 553 #define UFS_VREG_VCC_MAX_UV        3600000 /* uV */
 554 #define UFS_VREG_VCC_1P8_MIN_UV    1700000 /* uV */
 555 #define UFS_VREG_VCC_1P8_MAX_UV    1950000 /* uV */
 556 #define UFS_VREG_VCCQ_MIN_UV       1140000 /* uV */
 557 #define UFS_VREG_VCCQ_MAX_UV       1260000 /* uV */
 558 #define UFS_VREG_VCCQ2_MIN_UV      1700000 /* uV */
 559 #define UFS_VREG_VCCQ2_MAX_UV      1950000 /* uV */
 560
 561 /*
 562  * VCCQ & VCCQ2 current requirement when UFS device is in sleep state
 563  * and link is in Hibern8 state.
 564  */
 565 #define UFS_VREG_LPM_LOAD_UA    1000 /* uA */
 566
 567 struct ufs_vreg {
 568         struct regulator *reg;
 569         const char *name;
 570         bool always_on;
 571         bool enabled;
 572         int min_uV;
 573         int max_uV;
 574         int max_uA;
 575 };
 576
 577 struct ufs_vreg_info {
 578         struct ufs_vreg *vcc;
 579         struct ufs_vreg *vccq;
 580         struct ufs_vreg *vccq2;
 581         struct ufs_vreg *vdd_hba;
 582 };
 583
 584 struct ufs_dev_info {
 585         bool    f_power_on_wp_en;
 586         /* Keeps information if any of the LU is power on write protected */
 587         bool    is_lu_power_on_wp;
 588         /* Maximum number of general LU supported by the UFS device */
 589         u8      max_lu_supported;
 590         u16     wmanufacturerid;
 591         /*UFS device Product Name */
 592         u8      *model;
 593         u16     wspecversion;
 594         u32     clk_gating_wait_us;
 595
 596         /* UFS HPB related flag */
 597         bool    hpb_enabled;
 598
 599         /* UFS WB related flags */
 600         bool    wb_enabled;
 601         bool    wb_buf_flush_enabled;
 602         u8      wb_dedicated_lu;
 603         u8      wb_buffer_type;
 604
 605         bool    b_rpm_dev_flush_capable;
 606         u8      b_presrv_uspc_en;
 607 };
 608
 609 /*
 610  * This enum is used in string mapping in include/trace/events/ufs.h.
 611  */
 612 enum ufs_trace_str_t {
 613         UFS_CMD_SEND, UFS_CMD_COMP, UFS_DEV_COMP,
 614         UFS_QUERY_SEND, UFS_QUERY_COMP, UFS_QUERY_ERR,
 615         UFS_TM_SEND, UFS_TM_COMP, UFS_TM_ERR
 616 };
 617
 618 /*
 619  * Transaction Specific Fields (TSF) type in the UPIU package, this enum is
 620  * used in include/trace/events/ufs.h for UFS command trace.
 621  */
 622 enum ufs_trace_tsf_t {
 623         UFS_TSF_CDB, UFS_TSF_OSF, UFS_TSF_TM_INPUT, UFS_TSF_TM_OUTPUT
 624 };
 625
 626 /**
 627  * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit descriptor
 628  * @dev_info: pointer of instance of struct ufs_dev_info
 629  * @lun: LU number to check
 630  * @return: true if the lun has a matching unit descriptor, false otherwise
 631  */
 632 static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info,
 633                 u8 lun, u8 param_offset)
 634 {
 635         if (!dev_info || !dev_info->max_lu_supported) {
 636                 pr_err("Max General LU supported by UFS isn't initialized\n");
 637                 return false;
 638         }
 639         /* WB is available only for the logical unit from 0 to 7 */
 640         if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS)
 641                 return lun < UFS_UPIU_MAX_WB_LUN_ID;
 642         return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info->max_lu_supported);
 643 }
 644
 645 #endif /* End of Header */