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 _UFSHCI_H 12 #define _UFSHCI_H 13 14 #include <linux/types.h> 15 #include <ufs/ufs.h> 16 17 enum { 18 TASK_REQ_UPIU_SIZE_DWORDS = 8, 19 TASK_RSP_UPIU_SIZE_DWORDS = 8, 20 ALIGNED_UPIU_SIZE = 512, 21 }; 22 23 /* UFSHCI Registers */ 24 enum { 25 REG_CONTROLLER_CAPABILITIES = 0x00, 26 REG_MCQCAP = 0x04, 27 REG_UFS_VERSION = 0x08, 28 REG_CONTROLLER_DEV_ID = 0x10, 29 REG_CONTROLLER_PROD_ID = 0x14, 30 REG_AUTO_HIBERNATE_IDLE_TIMER = 0x18, 31 REG_INTERRUPT_STATUS = 0x20, 32 REG_INTERRUPT_ENABLE = 0x24, 33 REG_CONTROLLER_STATUS = 0x30, 34 REG_CONTROLLER_ENABLE = 0x34, 35 REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER = 0x38, 36 REG_UIC_ERROR_CODE_DATA_LINK_LAYER = 0x3C, 37 REG_UIC_ERROR_CODE_NETWORK_LAYER = 0x40, 38 REG_UIC_ERROR_CODE_TRANSPORT_LAYER = 0x44, 39 REG_UIC_ERROR_CODE_DME = 0x48, 40 REG_UTP_TRANSFER_REQ_INT_AGG_CONTROL = 0x4C, 41 REG_UTP_TRANSFER_REQ_LIST_BASE_L = 0x50, 42 REG_UTP_TRANSFER_REQ_LIST_BASE_H = 0x54, 43 REG_UTP_TRANSFER_REQ_DOOR_BELL = 0x58, 44 REG_UTP_TRANSFER_REQ_LIST_CLEAR = 0x5C, 45 REG_UTP_TRANSFER_REQ_LIST_RUN_STOP = 0x60, 46 REG_UTP_TASK_REQ_LIST_BASE_L = 0x70, 47 REG_UTP_TASK_REQ_LIST_BASE_H = 0x74, 48 REG_UTP_TASK_REQ_DOOR_BELL = 0x78, 49 REG_UTP_TASK_REQ_LIST_CLEAR = 0x7C, 50 REG_UTP_TASK_REQ_LIST_RUN_STOP = 0x80, 51 REG_UIC_COMMAND = 0x90, 52 REG_UIC_COMMAND_ARG_1 = 0x94, 53 REG_UIC_COMMAND_ARG_2 = 0x98, 54 REG_UIC_COMMAND_ARG_3 = 0x9C, 55 56 UFSHCI_REG_SPACE_SIZE = 0xA0, 57 58 REG_UFS_CCAP = 0x100, 59 REG_UFS_CRYPTOCAP = 0x104, 60 61 REG_UFS_MEM_CFG = 0x300, 62 REG_UFS_MCQ_CFG = 0x380, 63 REG_UFS_ESILBA = 0x384, 64 REG_UFS_ESIUBA = 0x388, 65 UFSHCI_CRYPTO_REG_SPACE_SIZE = 0x400, 66 }; 67 68 /* Controller capability masks */ 69 enum { 70 MASK_TRANSFER_REQUESTS_SLOTS = 0x0000001F, 71 MASK_TASK_MANAGEMENT_REQUEST_SLOTS = 0x00070000, 72 MASK_EHSLUTRD_SUPPORTED = 0x00400000, 73 MASK_AUTO_HIBERN8_SUPPORT = 0x00800000, 74 MASK_64_ADDRESSING_SUPPORT = 0x01000000, 75 MASK_OUT_OF_ORDER_DATA_DELIVERY_SUPPORT = 0x02000000, 76 MASK_UIC_DME_TEST_MODE_SUPPORT = 0x04000000, 77 MASK_CRYPTO_SUPPORT = 0x10000000, 78 MASK_MCQ_SUPPORT = 0x40000000, 79 }; 80 81 /* MCQ capability mask */ 82 enum { 83 MASK_EXT_IID_SUPPORT = 0x00000400, 84 }; 85 86 enum { 87 REG_SQATTR = 0x0, 88 REG_SQLBA = 0x4, 89 REG_SQUBA = 0x8, 90 REG_SQDAO = 0xC, 91 REG_SQISAO = 0x10, 92 93 REG_CQATTR = 0x20, 94 REG_CQLBA = 0x24, 95 REG_CQUBA = 0x28, 96 REG_CQDAO = 0x2C, 97 REG_CQISAO = 0x30, 98 }; 99 100 enum { 101 REG_SQHP = 0x0, 102 REG_SQTP = 0x4, 103 REG_SQRTC = 0x8, 104 REG_SQCTI = 0xC, 105 REG_SQRTS = 0x10, 106 }; 107 108 enum { 109 REG_CQHP = 0x0, 110 REG_CQTP = 0x4, 111 }; 112 113 enum { 114 REG_CQIS = 0x0, 115 REG_CQIE = 0x4, 116 }; 117 118 enum { 119 SQ_START = 0x0, 120 SQ_STOP = 0x1, 121 SQ_ICU = 0x2, 122 }; 123 124 enum { 125 SQ_STS = 0x1, 126 SQ_CUS = 0x2, 127 }; 128 129 #define SQ_ICU_ERR_CODE_MASK GENMASK(7, 4) 130 #define UFS_MASK(mask, offset) ((mask) << (offset)) 131 132 /* UFS Version 08h */ 133 #define MINOR_VERSION_NUM_MASK UFS_MASK(0xFFFF, 0) 134 #define MAJOR_VERSION_NUM_MASK UFS_MASK(0xFFFF, 16) 135 136 #define UFSHCD_NUM_RESERVED 1 137 /* 138 * Controller UFSHCI version 139 * - 2.x and newer use the following scheme: 140 * major << 8 + minor << 4 141 * - 1.x has been converted to match this in 142 * ufshcd_get_ufs_version() 143 */ 144 static inline u32 ufshci_version(u32 major, u32 minor) 145 { 146 return (major << 8) + (minor << 4); 147 } 148 149 /* 150 * HCDDID - Host Controller Identification Descriptor 151 * - Device ID and Device Class 10h 152 */ 153 #define DEVICE_CLASS UFS_MASK(0xFFFF, 0) 154 #define DEVICE_ID UFS_MASK(0xFF, 24) 155 156 /* 157 * HCPMID - Host Controller Identification Descriptor 158 * - Product/Manufacturer ID 14h 159 */ 160 #define MANUFACTURE_ID_MASK UFS_MASK(0xFFFF, 0) 161 #define PRODUCT_ID_MASK UFS_MASK(0xFFFF, 16) 162 163 /* AHIT - Auto-Hibernate Idle Timer */ 164 #define UFSHCI_AHIBERN8_TIMER_MASK GENMASK(9, 0) 165 #define UFSHCI_AHIBERN8_SCALE_MASK GENMASK(12, 10) 166 #define UFSHCI_AHIBERN8_SCALE_FACTOR 10 167 #define UFSHCI_AHIBERN8_MAX (1023 * 100000) 168 169 /* 170 * IS - Interrupt Status - 20h 171 */ 172 #define UTP_TRANSFER_REQ_COMPL 0x1 173 #define UIC_DME_END_PT_RESET 0x2 174 #define UIC_ERROR 0x4 175 #define UIC_TEST_MODE 0x8 176 #define UIC_POWER_MODE 0x10 177 #define UIC_HIBERNATE_EXIT 0x20 178 #define UIC_HIBERNATE_ENTER 0x40 179 #define UIC_LINK_LOST 0x80 180 #define UIC_LINK_STARTUP 0x100 181 #define UTP_TASK_REQ_COMPL 0x200 182 #define UIC_COMMAND_COMPL 0x400 183 #define DEVICE_FATAL_ERROR 0x800 184 #define CONTROLLER_FATAL_ERROR 0x10000 185 #define SYSTEM_BUS_FATAL_ERROR 0x20000 186 #define CRYPTO_ENGINE_FATAL_ERROR 0x40000 187 #define MCQ_CQ_EVENT_STATUS 0x100000 188 189 #define UFSHCD_UIC_HIBERN8_MASK (UIC_HIBERNATE_ENTER |\ 190 UIC_HIBERNATE_EXIT) 191 192 #define UFSHCD_UIC_PWR_MASK (UFSHCD_UIC_HIBERN8_MASK |\ 193 UIC_POWER_MODE) 194 195 #define UFSHCD_UIC_MASK (UIC_COMMAND_COMPL | UFSHCD_UIC_PWR_MASK) 196 197 #define UFSHCD_ERROR_MASK (UIC_ERROR | INT_FATAL_ERRORS) 198 199 #define INT_FATAL_ERRORS (DEVICE_FATAL_ERROR |\ 200 CONTROLLER_FATAL_ERROR |\ 201 SYSTEM_BUS_FATAL_ERROR |\ 202 CRYPTO_ENGINE_FATAL_ERROR |\ 203 UIC_LINK_LOST) 204 205 /* HCS - Host Controller Status 30h */ 206 #define DEVICE_PRESENT 0x1 207 #define UTP_TRANSFER_REQ_LIST_READY 0x2 208 #define UTP_TASK_REQ_LIST_READY 0x4 209 #define UIC_COMMAND_READY 0x8 210 #define HOST_ERROR_INDICATOR 0x10 211 #define DEVICE_ERROR_INDICATOR 0x20 212 #define UIC_POWER_MODE_CHANGE_REQ_STATUS_MASK UFS_MASK(0x7, 8) 213 214 #define UFSHCD_STATUS_READY (UTP_TRANSFER_REQ_LIST_READY |\ 215 UTP_TASK_REQ_LIST_READY |\ 216 UIC_COMMAND_READY) 217 218 enum { 219 PWR_OK = 0x0, 220 PWR_LOCAL = 0x01, 221 PWR_REMOTE = 0x02, 222 PWR_BUSY = 0x03, 223 PWR_ERROR_CAP = 0x04, 224 PWR_FATAL_ERROR = 0x05, 225 }; 226 227 /* HCE - Host Controller Enable 34h */ 228 #define CONTROLLER_ENABLE 0x1 229 #define CONTROLLER_DISABLE 0x0 230 #define CRYPTO_GENERAL_ENABLE 0x2 231 232 /* UECPA - Host UIC Error Code PHY Adapter Layer 38h */ 233 #define UIC_PHY_ADAPTER_LAYER_ERROR 0x80000000 234 #define UIC_PHY_ADAPTER_LAYER_ERROR_CODE_MASK 0x1F 235 #define UIC_PHY_ADAPTER_LAYER_LANE_ERR_MASK 0xF 236 #define UIC_PHY_ADAPTER_LAYER_GENERIC_ERROR 0x10 237 238 /* UECDL - Host UIC Error Code Data Link Layer 3Ch */ 239 #define UIC_DATA_LINK_LAYER_ERROR 0x80000000 240 #define UIC_DATA_LINK_LAYER_ERROR_CODE_MASK 0xFFFF 241 #define UIC_DATA_LINK_LAYER_ERROR_TCX_REP_TIMER_EXP 0x2 242 #define UIC_DATA_LINK_LAYER_ERROR_AFCX_REQ_TIMER_EXP 0x4 243 #define UIC_DATA_LINK_LAYER_ERROR_FCX_PRO_TIMER_EXP 0x8 244 #define UIC_DATA_LINK_LAYER_ERROR_RX_BUF_OF 0x20 245 #define UIC_DATA_LINK_LAYER_ERROR_PA_INIT 0x2000 246 #define UIC_DATA_LINK_LAYER_ERROR_NAC_RECEIVED 0x0001 247 #define UIC_DATA_LINK_LAYER_ERROR_TCx_REPLAY_TIMEOUT 0x0002 248 249 /* UECN - Host UIC Error Code Network Layer 40h */ 250 #define UIC_NETWORK_LAYER_ERROR 0x80000000 251 #define UIC_NETWORK_LAYER_ERROR_CODE_MASK 0x7 252 #define UIC_NETWORK_UNSUPPORTED_HEADER_TYPE 0x1 253 #define UIC_NETWORK_BAD_DEVICEID_ENC 0x2 254 #define UIC_NETWORK_LHDR_TRAP_PACKET_DROPPING 0x4 255 256 /* UECT - Host UIC Error Code Transport Layer 44h */ 257 #define UIC_TRANSPORT_LAYER_ERROR 0x80000000 258 #define UIC_TRANSPORT_LAYER_ERROR_CODE_MASK 0x7F 259 #define UIC_TRANSPORT_UNSUPPORTED_HEADER_TYPE 0x1 260 #define UIC_TRANSPORT_UNKNOWN_CPORTID 0x2 261 #define UIC_TRANSPORT_NO_CONNECTION_RX 0x4 262 #define UIC_TRANSPORT_CONTROLLED_SEGMENT_DROPPING 0x8 263 #define UIC_TRANSPORT_BAD_TC 0x10 264 #define UIC_TRANSPORT_E2E_CREDIT_OVERFOW 0x20 265 #define UIC_TRANSPORT_SAFETY_VALUE_DROPPING 0x40 266 267 /* UECDME - Host UIC Error Code DME 48h */ 268 #define UIC_DME_ERROR 0x80000000 269 #define UIC_DME_ERROR_CODE_MASK 0x1 270 271 /* UTRIACR - Interrupt Aggregation control register - 0x4Ch */ 272 #define INT_AGGR_TIMEOUT_VAL_MASK 0xFF 273 #define INT_AGGR_COUNTER_THRESHOLD_MASK UFS_MASK(0x1F, 8) 274 #define INT_AGGR_COUNTER_AND_TIMER_RESET 0x10000 275 #define INT_AGGR_STATUS_BIT 0x100000 276 #define INT_AGGR_PARAM_WRITE 0x1000000 277 #define INT_AGGR_ENABLE 0x80000000 278 279 /* UTRLRSR - UTP Transfer Request Run-Stop Register 60h */ 280 #define UTP_TRANSFER_REQ_LIST_RUN_STOP_BIT 0x1 281 282 /* UTMRLRSR - UTP Task Management Request Run-Stop Register 80h */ 283 #define UTP_TASK_REQ_LIST_RUN_STOP_BIT 0x1 284 285 /* REG_UFS_MEM_CFG - Global Config Registers 300h */ 286 #define MCQ_MODE_SELECT BIT(0) 287 288 /* CQISy - CQ y Interrupt Status Register */ 289 #define UFSHCD_MCQ_CQIS_TAIL_ENT_PUSH_STS 0x1 290 291 /* UICCMD - UIC Command */ 292 #define COMMAND_OPCODE_MASK 0xFF 293 #define GEN_SELECTOR_INDEX_MASK 0xFFFF 294 295 #define MIB_ATTRIBUTE_MASK UFS_MASK(0xFFFF, 16) 296 #define RESET_LEVEL 0xFF 297 298 #define ATTR_SET_TYPE_MASK UFS_MASK(0xFF, 16) 299 #define CONFIG_RESULT_CODE_MASK 0xFF 300 #define GENERIC_ERROR_CODE_MASK 0xFF 301 302 /* GenSelectorIndex calculation macros for M-PHY attributes */ 303 #define UIC_ARG_MPHY_TX_GEN_SEL_INDEX(lane) (lane) 304 #define UIC_ARG_MPHY_RX_GEN_SEL_INDEX(lane) (PA_MAXDATALANES + (lane)) 305 306 #define UIC_ARG_MIB_SEL(attr, sel) ((((attr) & 0xFFFF) << 16) |\ 307 ((sel) & 0xFFFF)) 308 #define UIC_ARG_MIB(attr) UIC_ARG_MIB_SEL(attr, 0) 309 #define UIC_ARG_ATTR_TYPE(t) (((t) & 0xFF) << 16) 310 #define UIC_GET_ATTR_ID(v) (((v) >> 16) & 0xFFFF) 311 312 /* Link Status*/ 313 enum link_status { 314 UFSHCD_LINK_IS_DOWN = 1, 315 UFSHCD_LINK_IS_UP = 2, 316 }; 317 318 /* UIC Commands */ 319 enum uic_cmd_dme { 320 UIC_CMD_DME_GET = 0x01, 321 UIC_CMD_DME_SET = 0x02, 322 UIC_CMD_DME_PEER_GET = 0x03, 323 UIC_CMD_DME_PEER_SET = 0x04, 324 UIC_CMD_DME_POWERON = 0x10, 325 UIC_CMD_DME_POWEROFF = 0x11, 326 UIC_CMD_DME_ENABLE = 0x12, 327 UIC_CMD_DME_RESET = 0x14, 328 UIC_CMD_DME_END_PT_RST = 0x15, 329 UIC_CMD_DME_LINK_STARTUP = 0x16, 330 UIC_CMD_DME_HIBER_ENTER = 0x17, 331 UIC_CMD_DME_HIBER_EXIT = 0x18, 332 UIC_CMD_DME_TEST_MODE = 0x1A, 333 }; 334 335 /* UIC Config result code / Generic error code */ 336 enum { 337 UIC_CMD_RESULT_SUCCESS = 0x00, 338 UIC_CMD_RESULT_INVALID_ATTR = 0x01, 339 UIC_CMD_RESULT_FAILURE = 0x01, 340 UIC_CMD_RESULT_INVALID_ATTR_VALUE = 0x02, 341 UIC_CMD_RESULT_READ_ONLY_ATTR = 0x03, 342 UIC_CMD_RESULT_WRITE_ONLY_ATTR = 0x04, 343 UIC_CMD_RESULT_BAD_INDEX = 0x05, 344 UIC_CMD_RESULT_LOCKED_ATTR = 0x06, 345 UIC_CMD_RESULT_BAD_TEST_FEATURE_INDEX = 0x07, 346 UIC_CMD_RESULT_PEER_COMM_FAILURE = 0x08, 347 UIC_CMD_RESULT_BUSY = 0x09, 348 UIC_CMD_RESULT_DME_FAILURE = 0x0A, 349 }; 350 351 #define MASK_UIC_COMMAND_RESULT 0xFF 352 353 #define INT_AGGR_COUNTER_THLD_VAL(c) (((c) & 0x1F) << 8) 354 #define INT_AGGR_TIMEOUT_VAL(t) (((t) & 0xFF) << 0) 355 356 /* Interrupt disable masks */ 357 enum { 358 /* Interrupt disable mask for UFSHCI v1.1 */ 359 INTERRUPT_MASK_ALL_VER_11 = 0x31FFF, 360 361 /* Interrupt disable mask for UFSHCI v2.1 */ 362 INTERRUPT_MASK_ALL_VER_21 = 0x71FFF, 363 }; 364 365 /* CCAP - Crypto Capability 100h */ 366 union ufs_crypto_capabilities { 367 __le32 reg_val; 368 struct { 369 u8 num_crypto_cap; 370 u8 config_count; 371 u8 reserved; 372 u8 config_array_ptr; 373 }; 374 }; 375 376 enum ufs_crypto_key_size { 377 UFS_CRYPTO_KEY_SIZE_INVALID = 0x0, 378 UFS_CRYPTO_KEY_SIZE_128 = 0x1, 379 UFS_CRYPTO_KEY_SIZE_192 = 0x2, 380 UFS_CRYPTO_KEY_SIZE_256 = 0x3, 381 UFS_CRYPTO_KEY_SIZE_512 = 0x4, 382 }; 383 384 enum ufs_crypto_alg { 385 UFS_CRYPTO_ALG_AES_XTS = 0x0, 386 UFS_CRYPTO_ALG_BITLOCKER_AES_CBC = 0x1, 387 UFS_CRYPTO_ALG_AES_ECB = 0x2, 388 UFS_CRYPTO_ALG_ESSIV_AES_CBC = 0x3, 389 }; 390 391 /* x-CRYPTOCAP - Crypto Capability X */ 392 union ufs_crypto_cap_entry { 393 __le32 reg_val; 394 struct { 395 u8 algorithm_id; 396 u8 sdus_mask; /* Supported data unit size mask */ 397 u8 key_size; 398 u8 reserved; 399 }; 400 }; 401 402 #define UFS_CRYPTO_CONFIGURATION_ENABLE (1 << 7) 403 #define UFS_CRYPTO_KEY_MAX_SIZE 64 404 /* x-CRYPTOCFG - Crypto Configuration X */ 405 union ufs_crypto_cfg_entry { 406 __le32 reg_val[32]; 407 struct { 408 u8 crypto_key[UFS_CRYPTO_KEY_MAX_SIZE]; 409 u8 data_unit_size; 410 u8 crypto_cap_idx; 411 u8 reserved_1; 412 u8 config_enable; 413 u8 reserved_multi_host; 414 u8 reserved_2; 415 u8 vsb[2]; 416 u8 reserved_3[56]; 417 }; 418 }; 419 420 /* 421 * Request Descriptor Definitions 422 */ 423 424 /* To accommodate UFS2.0 required Command type */ 425 enum { 426 UTP_CMD_TYPE_UFS_STORAGE = 0x1, 427 }; 428 429 enum { 430 UTP_SCSI_COMMAND = 0x00000000, 431 UTP_NATIVE_UFS_COMMAND = 0x10000000, 432 UTP_DEVICE_MANAGEMENT_FUNCTION = 0x20000000, 433 }; 434 435 /* UTP Transfer Request Data Direction (DD) */ 436 enum utp_data_direction { 437 UTP_NO_DATA_TRANSFER = 0, 438 UTP_HOST_TO_DEVICE = 1, 439 UTP_DEVICE_TO_HOST = 2, 440 }; 441 442 /* Overall command status values */ 443 enum utp_ocs { 444 OCS_SUCCESS = 0x0, 445 OCS_INVALID_CMD_TABLE_ATTR = 0x1, 446 OCS_INVALID_PRDT_ATTR = 0x2, 447 OCS_MISMATCH_DATA_BUF_SIZE = 0x3, 448 OCS_MISMATCH_RESP_UPIU_SIZE = 0x4, 449 OCS_PEER_COMM_FAILURE = 0x5, 450 OCS_ABORTED = 0x6, 451 OCS_FATAL_ERROR = 0x7, 452 OCS_DEVICE_FATAL_ERROR = 0x8, 453 OCS_INVALID_CRYPTO_CONFIG = 0x9, 454 OCS_GENERAL_CRYPTO_ERROR = 0xA, 455 OCS_INVALID_COMMAND_STATUS = 0x0F, 456 }; 457 458 enum { 459 MASK_OCS = 0x0F, 460 }; 461 462 /* The maximum length of the data byte count field in the PRDT is 256KB */ 463 #define PRDT_DATA_BYTE_COUNT_MAX SZ_256K 464 /* The granularity of the data byte count field in the PRDT is 32-bit */ 465 #define PRDT_DATA_BYTE_COUNT_PAD 4 466 467 /** 468 * struct ufshcd_sg_entry - UFSHCI PRD Entry 469 * @addr: Physical address; DW-0 and DW-1. 470 * @reserved: Reserved for future use DW-2 471 * @size: size of physical segment DW-3 472 */ 473 struct ufshcd_sg_entry { 474 __le64 addr; 475 __le32 reserved; 476 __le32 size; 477 /* 478 * followed by variant-specific fields if 479 * CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE has been defined. 480 */ 481 }; 482 483 /** 484 * struct utp_transfer_cmd_desc - UTP Command Descriptor (UCD) 485 * @command_upiu: Command UPIU Frame address 486 * @response_upiu: Response UPIU Frame address 487 * @prd_table: Physical Region Descriptor: an array of SG_ALL struct 488 * ufshcd_sg_entry's. Variant-specific fields may be present after each. 489 */ 490 struct utp_transfer_cmd_desc { 491 u8 command_upiu[ALIGNED_UPIU_SIZE]; 492 u8 response_upiu[ALIGNED_UPIU_SIZE]; 493 u8 prd_table[]; 494 }; 495 496 /** 497 * struct request_desc_header - Descriptor Header common to both UTRD and UTMRD 498 */ 499 struct request_desc_header { 500 u8 cci; 501 u8 ehs_length; 502 #if defined(__BIG_ENDIAN) 503 u8 enable_crypto:1; 504 u8 reserved2:7; 505 506 u8 command_type:4; 507 u8 reserved1:1; 508 u8 data_direction:2; 509 u8 interrupt:1; 510 #elif defined(__LITTLE_ENDIAN) 511 u8 reserved2:7; 512 u8 enable_crypto:1; 513 514 u8 interrupt:1; 515 u8 data_direction:2; 516 u8 reserved1:1; 517 u8 command_type:4; 518 #else 519 #error 520 #endif 521 522 __le32 dunl; 523 u8 ocs; 524 u8 cds; 525 __le16 ldbc; 526 __le32 dunu; 527 }; 528 529 static_assert(sizeof(struct request_desc_header) == 16); 530 531 /** 532 * struct utp_transfer_req_desc - UTP Transfer Request Descriptor (UTRD) 533 * @header: UTRD header DW-0 to DW-3 534 * @command_desc_base_addr: UCD base address DW 4-5 535 * @response_upiu_length: response UPIU length DW-6 536 * @response_upiu_offset: response UPIU offset DW-6 537 * @prd_table_length: Physical region descriptor length DW-7 538 * @prd_table_offset: Physical region descriptor offset DW-7 539 */ 540 struct utp_transfer_req_desc { 541 542 /* DW 0-3 */ 543 struct request_desc_header header; 544 545 /* DW 4-5*/ 546 __le64 command_desc_base_addr; 547 548 /* DW 6 */ 549 __le16 response_upiu_length; 550 __le16 response_upiu_offset; 551 552 /* DW 7 */ 553 __le16 prd_table_length; 554 __le16 prd_table_offset; 555 }; 556 557 /* MCQ Completion Queue Entry */ 558 struct cq_entry { 559 /* DW 0-1 */ 560 __le64 command_desc_base_addr; 561 562 /* DW 2 */ 563 __le16 response_upiu_length; 564 __le16 response_upiu_offset; 565 566 /* DW 3 */ 567 __le16 prd_table_length; 568 __le16 prd_table_offset; 569 570 /* DW 4 */ 571 __le32 status; 572 573 /* DW 5-7 */ 574 __le32 reserved[3]; 575 }; 576 577 static_assert(sizeof(struct cq_entry) == 32); 578 579 /* 580 * UTMRD structure. 581 */ 582 struct utp_task_req_desc { 583 /* DW 0-3 */ 584 struct request_desc_header header; 585 586 /* DW 4-11 - Task request UPIU structure */ 587 struct { 588 struct utp_upiu_header req_header; 589 __be32 input_param1; 590 __be32 input_param2; 591 __be32 input_param3; 592 __be32 __reserved1[2]; 593 } upiu_req; 594 595 /* DW 12-19 - Task Management Response UPIU structure */ 596 struct { 597 struct utp_upiu_header rsp_header; 598 __be32 output_param1; 599 __be32 output_param2; 600 __be32 __reserved2[3]; 601 } upiu_rsp; 602 }; 603 604 #endif /* End of Header */ 605