1 /* 2 * Copyright (c) 2017-2021, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 #include <endian.h> 9 #include <errno.h> 10 #include <stdint.h> 11 #include <string.h> 12 13 #include <platform_def.h> 14 15 #include <arch_helpers.h> 16 #include <common/debug.h> 17 #include <drivers/delay_timer.h> 18 #include <drivers/ufs.h> 19 #include <lib/mmio.h> 20 21 #define CDB_ADDR_MASK 127 22 #define ALIGN_CDB(x) (((x) + CDB_ADDR_MASK) & ~CDB_ADDR_MASK) 23 #define ALIGN_8(x) (((x) + 7) & ~7) 24 25 #define UFS_DESC_SIZE 0x400 26 #define MAX_UFS_DESC_SIZE 0x8000 /* 32 descriptors */ 27 28 #define MAX_PRDT_SIZE 0x40000 /* 256KB */ 29 30 static ufs_params_t ufs_params; 31 static int nutrs; /* Number of UTP Transfer Request Slots */ 32 33 int ufshc_send_uic_cmd(uintptr_t base, uic_cmd_t *cmd) 34 { 35 unsigned int data; 36 37 if (base == 0 || cmd == NULL) 38 return -EINVAL; 39 40 data = mmio_read_32(base + HCS); 41 if ((data & HCS_UCRDY) == 0) 42 return -EBUSY; 43 mmio_write_32(base + IS, ~0); 44 mmio_write_32(base + UCMDARG1, cmd->arg1); 45 mmio_write_32(base + UCMDARG2, cmd->arg2); 46 mmio_write_32(base + UCMDARG3, cmd->arg3); 47 mmio_write_32(base + UICCMD, cmd->op); 48 49 do { 50 data = mmio_read_32(base + IS); 51 } while ((data & UFS_INT_UCCS) == 0); 52 mmio_write_32(base + IS, UFS_INT_UCCS); 53 return mmio_read_32(base + UCMDARG2) & CONFIG_RESULT_CODE_MASK; 54 } 55 56 int ufshc_dme_get(unsigned int attr, unsigned int idx, unsigned int *val) 57 { 58 uintptr_t base; 59 unsigned int data; 60 int result, retries; 61 uic_cmd_t cmd; 62 63 assert(ufs_params.reg_base != 0); 64 65 if (val == NULL) 66 return -EINVAL; 67 68 base = ufs_params.reg_base; 69 for (retries = 0; retries < 100; retries++) { 70 data = mmio_read_32(base + HCS); 71 if ((data & HCS_UCRDY) != 0) 72 break; 73 mdelay(1); 74 } 75 if (retries >= 100) 76 return -EBUSY; 77 78 cmd.arg1 = (attr << 16) | GEN_SELECTOR_IDX(idx); 79 cmd.arg2 = 0; 80 cmd.arg3 = 0; 81 cmd.op = DME_GET; 82 for (retries = 0; retries < UFS_UIC_COMMAND_RETRIES; ++retries) { 83 result = ufshc_send_uic_cmd(base, &cmd); 84 if (result == 0) 85 break; 86 data = mmio_read_32(base + IS); 87 if (data & UFS_INT_UE) 88 return -EINVAL; 89 } 90 if (retries >= UFS_UIC_COMMAND_RETRIES) 91 return -EIO; 92 93 *val = mmio_read_32(base + UCMDARG3); 94 return 0; 95 } 96 97 int ufshc_dme_set(unsigned int attr, unsigned int idx, unsigned int val) 98 { 99 uintptr_t base; 100 unsigned int data; 101 int result, retries; 102 uic_cmd_t cmd; 103 104 assert((ufs_params.reg_base != 0)); 105 106 base = ufs_params.reg_base; 107 cmd.arg1 = (attr << 16) | GEN_SELECTOR_IDX(idx); 108 cmd.arg2 = 0; 109 cmd.arg3 = val; 110 cmd.op = DME_SET; 111 112 for (retries = 0; retries < UFS_UIC_COMMAND_RETRIES; ++retries) { 113 result = ufshc_send_uic_cmd(base, &cmd); 114 if (result == 0) 115 break; 116 data = mmio_read_32(base + IS); 117 if (data & UFS_INT_UE) 118 return -EINVAL; 119 } 120 if (retries >= UFS_UIC_COMMAND_RETRIES) 121 return -EIO; 122 123 return 0; 124 } 125 126 static int ufshc_hce_enable(uintptr_t base) 127 { 128 unsigned int data; 129 int retries; 130 131 /* Enable Host Controller */ 132 mmio_write_32(base + HCE, HCE_ENABLE); 133 134 /* Wait until basic initialization sequence completed */ 135 for (retries = 0; retries < HCE_ENABLE_INNER_RETRIES; ++retries) { 136 data = mmio_read_32(base + HCE); 137 if (data & HCE_ENABLE) { 138 break; 139 } 140 udelay(HCE_ENABLE_TIMEOUT_US); 141 } 142 if (retries >= HCE_ENABLE_INNER_RETRIES) { 143 return -ETIMEDOUT; 144 } 145 146 return 0; 147 } 148 149 static int ufshc_reset(uintptr_t base) 150 { 151 unsigned int data; 152 int retries, result; 153 154 for (retries = 0; retries < HCE_ENABLE_OUTER_RETRIES; ++retries) { 155 result = ufshc_hce_enable(base); 156 if (result == 0) { 157 break; 158 } 159 } 160 if (retries >= HCE_ENABLE_OUTER_RETRIES) { 161 return -EIO; 162 } 163 164 /* Enable Interrupts */ 165 data = UFS_INT_UCCS | UFS_INT_ULSS | UFS_INT_UE | UFS_INT_UTPES | 166 UFS_INT_DFES | UFS_INT_HCFES | UFS_INT_SBFES; 167 mmio_write_32(base + IE, data); 168 169 return 0; 170 } 171 172 static int ufshc_dme_link_startup(uintptr_t base) 173 { 174 uic_cmd_t cmd; 175 176 memset(&cmd, 0, sizeof(cmd)); 177 cmd.op = DME_LINKSTARTUP; 178 return ufshc_send_uic_cmd(base, &cmd); 179 } 180 181 static int ufshc_link_startup(uintptr_t base) 182 { 183 int data, result; 184 int retries; 185 186 for (retries = DME_LINKSTARTUP_RETRIES; retries > 0; retries--) { 187 result = ufshc_dme_link_startup(base); 188 if (result != 0) { 189 /* Reset controller before trying again */ 190 result = ufshc_reset(base); 191 if (result != 0) { 192 return result; 193 } 194 continue; 195 } 196 while ((mmio_read_32(base + HCS) & HCS_DP) == 0) 197 ; 198 data = mmio_read_32(base + IS); 199 if (data & UFS_INT_ULSS) 200 mmio_write_32(base + IS, UFS_INT_ULSS); 201 return 0; 202 } 203 return -EIO; 204 } 205 206 /* Check Door Bell register to get an empty slot */ 207 static int get_empty_slot(int *slot) 208 { 209 unsigned int data; 210 int i; 211 212 data = mmio_read_32(ufs_params.reg_base + UTRLDBR); 213 for (i = 0; i < nutrs; i++) { 214 if ((data & 1) == 0) 215 break; 216 data = data >> 1; 217 } 218 if (i >= nutrs) 219 return -EBUSY; 220 *slot = i; 221 return 0; 222 } 223 224 static void get_utrd(utp_utrd_t *utrd) 225 { 226 uintptr_t base; 227 int slot = 0, result; 228 utrd_header_t *hd; 229 230 assert(utrd != NULL); 231 result = get_empty_slot(&slot); 232 assert(result == 0); 233 234 /* clear utrd */ 235 memset((void *)utrd, 0, sizeof(utp_utrd_t)); 236 base = ufs_params.desc_base + (slot * UFS_DESC_SIZE); 237 /* clear the descriptor */ 238 memset((void *)base, 0, UFS_DESC_SIZE); 239 240 utrd->header = base; 241 utrd->task_tag = slot + 1; 242 /* CDB address should be aligned with 128 bytes */ 243 utrd->upiu = ALIGN_CDB(utrd->header + sizeof(utrd_header_t)); 244 utrd->resp_upiu = ALIGN_8(utrd->upiu + sizeof(cmd_upiu_t)); 245 utrd->size_upiu = utrd->resp_upiu - utrd->upiu; 246 utrd->size_resp_upiu = ALIGN_8(sizeof(resp_upiu_t)); 247 utrd->prdt = utrd->resp_upiu + utrd->size_resp_upiu; 248 249 hd = (utrd_header_t *)utrd->header; 250 hd->ucdba = utrd->upiu & UINT32_MAX; 251 hd->ucdbau = (utrd->upiu >> 32) & UINT32_MAX; 252 /* Both RUL and RUO is based on DWORD */ 253 hd->rul = utrd->size_resp_upiu >> 2; 254 hd->ruo = utrd->size_upiu >> 2; 255 (void)result; 256 } 257 258 /* 259 * Prepare UTRD, Command UPIU, Response UPIU. 260 */ 261 static int ufs_prepare_cmd(utp_utrd_t *utrd, uint8_t op, uint8_t lun, 262 int lba, uintptr_t buf, size_t length) 263 { 264 utrd_header_t *hd; 265 cmd_upiu_t *upiu; 266 prdt_t *prdt; 267 unsigned int ulba; 268 unsigned int lba_cnt; 269 int prdt_size; 270 271 272 mmio_write_32(ufs_params.reg_base + UTRLBA, 273 utrd->header & UINT32_MAX); 274 mmio_write_32(ufs_params.reg_base + UTRLBAU, 275 (utrd->upiu >> 32) & UINT32_MAX); 276 277 hd = (utrd_header_t *)utrd->header; 278 upiu = (cmd_upiu_t *)utrd->upiu; 279 280 hd->i = 1; 281 hd->ct = CT_UFS_STORAGE; 282 hd->ocs = OCS_MASK; 283 284 upiu->trans_type = CMD_UPIU; 285 upiu->task_tag = utrd->task_tag; 286 upiu->cdb[0] = op; 287 ulba = (unsigned int)lba; 288 lba_cnt = (unsigned int)(length >> UFS_BLOCK_SHIFT); 289 switch (op) { 290 case CDBCMD_TEST_UNIT_READY: 291 break; 292 case CDBCMD_READ_CAPACITY_10: 293 hd->dd = DD_OUT; 294 upiu->flags = UPIU_FLAGS_R | UPIU_FLAGS_ATTR_S; 295 upiu->lun = lun; 296 break; 297 case CDBCMD_READ_10: 298 hd->dd = DD_OUT; 299 upiu->flags = UPIU_FLAGS_R | UPIU_FLAGS_ATTR_S; 300 upiu->lun = lun; 301 upiu->cdb[1] = RW_WITHOUT_CACHE; 302 /* set logical block address */ 303 upiu->cdb[2] = (ulba >> 24) & 0xff; 304 upiu->cdb[3] = (ulba >> 16) & 0xff; 305 upiu->cdb[4] = (ulba >> 8) & 0xff; 306 upiu->cdb[5] = ulba & 0xff; 307 /* set transfer length */ 308 upiu->cdb[7] = (lba_cnt >> 8) & 0xff; 309 upiu->cdb[8] = lba_cnt & 0xff; 310 break; 311 case CDBCMD_WRITE_10: 312 hd->dd = DD_IN; 313 upiu->flags = UPIU_FLAGS_W | UPIU_FLAGS_ATTR_S; 314 upiu->lun = lun; 315 upiu->cdb[1] = RW_WITHOUT_CACHE; 316 /* set logical block address */ 317 upiu->cdb[2] = (ulba >> 24) & 0xff; 318 upiu->cdb[3] = (ulba >> 16) & 0xff; 319 upiu->cdb[4] = (ulba >> 8) & 0xff; 320 upiu->cdb[5] = ulba & 0xff; 321 /* set transfer length */ 322 upiu->cdb[7] = (lba_cnt >> 8) & 0xff; 323 upiu->cdb[8] = lba_cnt & 0xff; 324 break; 325 default: 326 assert(0); 327 break; 328 } 329 if (hd->dd == DD_IN) 330 flush_dcache_range(buf, length); 331 else if (hd->dd == DD_OUT) 332 inv_dcache_range(buf, length); 333 if (length) { 334 upiu->exp_data_trans_len = htobe32(length); 335 assert(lba_cnt <= UINT16_MAX); 336 prdt = (prdt_t *)utrd->prdt; 337 338 prdt_size = 0; 339 while (length > 0) { 340 prdt->dba = (unsigned int)(buf & UINT32_MAX); 341 prdt->dbau = (unsigned int)((buf >> 32) & UINT32_MAX); 342 /* prdt->dbc counts from 0 */ 343 if (length > MAX_PRDT_SIZE) { 344 prdt->dbc = MAX_PRDT_SIZE - 1; 345 length = length - MAX_PRDT_SIZE; 346 } else { 347 prdt->dbc = length - 1; 348 length = 0; 349 } 350 buf += MAX_PRDT_SIZE; 351 prdt++; 352 prdt_size += sizeof(prdt_t); 353 } 354 utrd->size_prdt = ALIGN_8(prdt_size); 355 hd->prdtl = utrd->size_prdt >> 2; 356 hd->prdto = (utrd->size_upiu + utrd->size_resp_upiu) >> 2; 357 } 358 359 flush_dcache_range((uintptr_t)utrd, sizeof(utp_utrd_t)); 360 flush_dcache_range((uintptr_t)utrd->header, UFS_DESC_SIZE); 361 return 0; 362 } 363 364 static int ufs_prepare_query(utp_utrd_t *utrd, uint8_t op, uint8_t idn, 365 uint8_t index, uint8_t sel, 366 uintptr_t buf, size_t length) 367 { 368 utrd_header_t *hd; 369 query_upiu_t *query_upiu; 370 371 372 hd = (utrd_header_t *)utrd->header; 373 query_upiu = (query_upiu_t *)utrd->upiu; 374 375 mmio_write_32(ufs_params.reg_base + UTRLBA, 376 utrd->header & UINT32_MAX); 377 mmio_write_32(ufs_params.reg_base + UTRLBAU, 378 (utrd->header >> 32) & UINT32_MAX); 379 380 381 hd->i = 1; 382 hd->ct = CT_UFS_STORAGE; 383 hd->ocs = OCS_MASK; 384 385 query_upiu->trans_type = QUERY_REQUEST_UPIU; 386 query_upiu->task_tag = utrd->task_tag; 387 query_upiu->ts.desc.opcode = op; 388 query_upiu->ts.desc.idn = idn; 389 query_upiu->ts.desc.index = index; 390 query_upiu->ts.desc.selector = sel; 391 switch (op) { 392 case QUERY_READ_DESC: 393 query_upiu->query_func = QUERY_FUNC_STD_READ; 394 query_upiu->ts.desc.length = htobe16(length); 395 break; 396 case QUERY_WRITE_DESC: 397 query_upiu->query_func = QUERY_FUNC_STD_WRITE; 398 query_upiu->ts.desc.length = htobe16(length); 399 memcpy((void *)(utrd->upiu + sizeof(query_upiu_t)), 400 (void *)buf, length); 401 break; 402 case QUERY_READ_ATTR: 403 case QUERY_READ_FLAG: 404 query_upiu->query_func = QUERY_FUNC_STD_READ; 405 break; 406 case QUERY_CLEAR_FLAG: 407 case QUERY_SET_FLAG: 408 query_upiu->query_func = QUERY_FUNC_STD_WRITE; 409 break; 410 case QUERY_WRITE_ATTR: 411 query_upiu->query_func = QUERY_FUNC_STD_WRITE; 412 memcpy((void *)&query_upiu->ts.attr.value, (void *)buf, length); 413 break; 414 default: 415 assert(0); 416 break; 417 } 418 flush_dcache_range((uintptr_t)utrd, sizeof(utp_utrd_t)); 419 flush_dcache_range((uintptr_t)utrd->header, UFS_DESC_SIZE); 420 return 0; 421 } 422 423 static void ufs_prepare_nop_out(utp_utrd_t *utrd) 424 { 425 utrd_header_t *hd; 426 nop_out_upiu_t *nop_out; 427 428 mmio_write_32(ufs_params.reg_base + UTRLBA, 429 utrd->header & UINT32_MAX); 430 mmio_write_32(ufs_params.reg_base + UTRLBAU, 431 (utrd->header >> 32) & UINT32_MAX); 432 433 hd = (utrd_header_t *)utrd->header; 434 nop_out = (nop_out_upiu_t *)utrd->upiu; 435 436 hd->i = 1; 437 hd->ct = CT_UFS_STORAGE; 438 hd->ocs = OCS_MASK; 439 440 nop_out->trans_type = 0; 441 nop_out->task_tag = utrd->task_tag; 442 flush_dcache_range((uintptr_t)utrd, sizeof(utp_utrd_t)); 443 flush_dcache_range((uintptr_t)utrd->header, UFS_DESC_SIZE); 444 } 445 446 static void ufs_send_request(int task_tag) 447 { 448 unsigned int data; 449 int slot; 450 451 slot = task_tag - 1; 452 /* clear all interrupts */ 453 mmio_write_32(ufs_params.reg_base + IS, ~0); 454 455 mmio_write_32(ufs_params.reg_base + UTRLRSR, 1); 456 do { 457 data = mmio_read_32(ufs_params.reg_base + UTRLRSR); 458 } while (data == 0); 459 460 data = UTRIACR_IAEN | UTRIACR_CTR | UTRIACR_IACTH(0x1F) | 461 UTRIACR_IATOVAL(0xFF); 462 mmio_write_32(ufs_params.reg_base + UTRIACR, data); 463 /* send request */ 464 mmio_setbits_32(ufs_params.reg_base + UTRLDBR, 1 << slot); 465 } 466 467 static int ufs_check_resp(utp_utrd_t *utrd, int trans_type) 468 { 469 utrd_header_t *hd; 470 resp_upiu_t *resp; 471 unsigned int data; 472 int slot; 473 474 hd = (utrd_header_t *)utrd->header; 475 resp = (resp_upiu_t *)utrd->resp_upiu; 476 inv_dcache_range((uintptr_t)hd, UFS_DESC_SIZE); 477 do { 478 data = mmio_read_32(ufs_params.reg_base + IS); 479 if ((data & ~(UFS_INT_UCCS | UFS_INT_UTRCS)) != 0) 480 return -EIO; 481 } while ((data & UFS_INT_UTRCS) == 0); 482 slot = utrd->task_tag - 1; 483 484 data = mmio_read_32(ufs_params.reg_base + UTRLDBR); 485 assert((data & (1 << slot)) == 0); 486 assert(hd->ocs == OCS_SUCCESS); 487 assert((resp->trans_type & TRANS_TYPE_CODE_MASK) == trans_type); 488 (void)resp; 489 (void)slot; 490 return 0; 491 } 492 493 #ifdef UFS_RESP_DEBUG 494 static void dump_upiu(utp_utrd_t *utrd) 495 { 496 utrd_header_t *hd; 497 int i; 498 499 hd = (utrd_header_t *)utrd->header; 500 INFO("utrd:0x%x, ruo:0x%x, rul:0x%x, ocs:0x%x, UTRLDBR:0x%x\n", 501 (unsigned int)(uintptr_t)utrd, hd->ruo, hd->rul, hd->ocs, 502 mmio_read_32(ufs_params.reg_base + UTRLDBR)); 503 for (i = 0; i < sizeof(utrd_header_t); i += 4) { 504 INFO("[%lx]:0x%x\n", 505 (uintptr_t)utrd->header + i, 506 *(unsigned int *)((uintptr_t)utrd->header + i)); 507 } 508 509 for (i = 0; i < sizeof(cmd_upiu_t); i += 4) { 510 INFO("cmd[%lx]:0x%x\n", 511 utrd->upiu + i, 512 *(unsigned int *)(utrd->upiu + i)); 513 } 514 for (i = 0; i < sizeof(resp_upiu_t); i += 4) { 515 INFO("resp[%lx]:0x%x\n", 516 utrd->resp_upiu + i, 517 *(unsigned int *)(utrd->resp_upiu + i)); 518 } 519 for (i = 0; i < sizeof(prdt_t); i += 4) { 520 INFO("prdt[%lx]:0x%x\n", 521 utrd->prdt + i, 522 *(unsigned int *)(utrd->prdt + i)); 523 } 524 } 525 #endif 526 527 static void ufs_verify_init(void) 528 { 529 utp_utrd_t utrd; 530 int result; 531 532 get_utrd(&utrd); 533 ufs_prepare_nop_out(&utrd); 534 ufs_send_request(utrd.task_tag); 535 result = ufs_check_resp(&utrd, NOP_IN_UPIU); 536 assert(result == 0); 537 (void)result; 538 } 539 540 static void ufs_verify_ready(void) 541 { 542 utp_utrd_t utrd; 543 int result; 544 545 get_utrd(&utrd); 546 ufs_prepare_cmd(&utrd, CDBCMD_TEST_UNIT_READY, 0, 0, 0, 0); 547 ufs_send_request(utrd.task_tag); 548 result = ufs_check_resp(&utrd, RESPONSE_UPIU); 549 assert(result == 0); 550 (void)result; 551 } 552 553 static void ufs_query(uint8_t op, uint8_t idn, uint8_t index, uint8_t sel, 554 uintptr_t buf, size_t size) 555 { 556 utp_utrd_t utrd; 557 query_resp_upiu_t *resp; 558 int result; 559 560 switch (op) { 561 case QUERY_READ_FLAG: 562 case QUERY_READ_ATTR: 563 case QUERY_READ_DESC: 564 case QUERY_WRITE_DESC: 565 case QUERY_WRITE_ATTR: 566 assert(((buf & 3) == 0) && (size != 0)); 567 break; 568 default: 569 /* Do nothing in default case */ 570 break; 571 } 572 get_utrd(&utrd); 573 ufs_prepare_query(&utrd, op, idn, index, sel, buf, size); 574 ufs_send_request(utrd.task_tag); 575 result = ufs_check_resp(&utrd, QUERY_RESPONSE_UPIU); 576 assert(result == 0); 577 resp = (query_resp_upiu_t *)utrd.resp_upiu; 578 #ifdef UFS_RESP_DEBUG 579 dump_upiu(&utrd); 580 #endif 581 assert(resp->query_resp == QUERY_RESP_SUCCESS); 582 583 switch (op) { 584 case QUERY_READ_FLAG: 585 *(uint32_t *)buf = (uint32_t)resp->ts.flag.value; 586 break; 587 case QUERY_READ_ATTR: 588 case QUERY_READ_DESC: 589 memcpy((void *)buf, 590 (void *)(utrd.resp_upiu + sizeof(query_resp_upiu_t)), 591 size); 592 break; 593 default: 594 /* Do nothing in default case */ 595 break; 596 } 597 (void)result; 598 } 599 600 unsigned int ufs_read_attr(int idn) 601 { 602 unsigned int value; 603 604 ufs_query(QUERY_READ_ATTR, idn, 0, 0, 605 (uintptr_t)&value, sizeof(value)); 606 return value; 607 } 608 609 void ufs_write_attr(int idn, unsigned int value) 610 { 611 ufs_query(QUERY_WRITE_ATTR, idn, 0, 0, 612 (uintptr_t)&value, sizeof(value)); 613 } 614 615 unsigned int ufs_read_flag(int idn) 616 { 617 unsigned int value; 618 619 ufs_query(QUERY_READ_FLAG, idn, 0, 0, 620 (uintptr_t)&value, sizeof(value)); 621 return value; 622 } 623 624 void ufs_set_flag(int idn) 625 { 626 ufs_query(QUERY_SET_FLAG, idn, 0, 0, 0, 0); 627 } 628 629 void ufs_clear_flag(int idn) 630 { 631 ufs_query(QUERY_CLEAR_FLAG, idn, 0, 0, 0, 0); 632 } 633 634 void ufs_read_desc(int idn, int index, uintptr_t buf, size_t size) 635 { 636 ufs_query(QUERY_READ_DESC, idn, index, 0, buf, size); 637 } 638 639 void ufs_write_desc(int idn, int index, uintptr_t buf, size_t size) 640 { 641 ufs_query(QUERY_WRITE_DESC, idn, index, 0, buf, size); 642 } 643 644 static void ufs_read_capacity(int lun, unsigned int *num, unsigned int *size) 645 { 646 utp_utrd_t utrd; 647 resp_upiu_t *resp; 648 sense_data_t *sense; 649 unsigned char data[CACHE_WRITEBACK_GRANULE << 1]; 650 uintptr_t buf; 651 int result; 652 int retry; 653 654 assert((ufs_params.reg_base != 0) && 655 (ufs_params.desc_base != 0) && 656 (ufs_params.desc_size >= UFS_DESC_SIZE) && 657 (num != NULL) && (size != NULL)); 658 659 /* align buf address */ 660 buf = (uintptr_t)data; 661 buf = (buf + CACHE_WRITEBACK_GRANULE - 1) & 662 ~(CACHE_WRITEBACK_GRANULE - 1); 663 memset((void *)buf, 0, CACHE_WRITEBACK_GRANULE); 664 flush_dcache_range(buf, CACHE_WRITEBACK_GRANULE); 665 do { 666 get_utrd(&utrd); 667 ufs_prepare_cmd(&utrd, CDBCMD_READ_CAPACITY_10, lun, 0, 668 buf, READ_CAPACITY_LENGTH); 669 ufs_send_request(utrd.task_tag); 670 result = ufs_check_resp(&utrd, RESPONSE_UPIU); 671 assert(result == 0); 672 #ifdef UFS_RESP_DEBUG 673 dump_upiu(&utrd); 674 #endif 675 resp = (resp_upiu_t *)utrd.resp_upiu; 676 retry = 0; 677 sense = &resp->sd.sense; 678 if (sense->resp_code == SENSE_DATA_VALID) { 679 if ((sense->sense_key == SENSE_KEY_UNIT_ATTENTION) && 680 (sense->asc == 0x29) && (sense->ascq == 0)) { 681 retry = 1; 682 } 683 } 684 inv_dcache_range(buf, CACHE_WRITEBACK_GRANULE); 685 /* last logical block address */ 686 *num = be32toh(*(unsigned int *)buf); 687 if (*num) 688 *num += 1; 689 /* logical block length in bytes */ 690 *size = be32toh(*(unsigned int *)(buf + 4)); 691 } while (retry); 692 (void)result; 693 } 694 695 size_t ufs_read_blocks(int lun, int lba, uintptr_t buf, size_t size) 696 { 697 utp_utrd_t utrd; 698 resp_upiu_t *resp; 699 int result; 700 701 assert((ufs_params.reg_base != 0) && 702 (ufs_params.desc_base != 0) && 703 (ufs_params.desc_size >= UFS_DESC_SIZE)); 704 705 memset((void *)buf, 0, size); 706 get_utrd(&utrd); 707 ufs_prepare_cmd(&utrd, CDBCMD_READ_10, lun, lba, buf, size); 708 ufs_send_request(utrd.task_tag); 709 result = ufs_check_resp(&utrd, RESPONSE_UPIU); 710 assert(result == 0); 711 #ifdef UFS_RESP_DEBUG 712 dump_upiu(&utrd); 713 #endif 714 resp = (resp_upiu_t *)utrd.resp_upiu; 715 (void)result; 716 return size - resp->res_trans_cnt; 717 } 718 719 size_t ufs_write_blocks(int lun, int lba, const uintptr_t buf, size_t size) 720 { 721 utp_utrd_t utrd; 722 resp_upiu_t *resp; 723 int result; 724 725 assert((ufs_params.reg_base != 0) && 726 (ufs_params.desc_base != 0) && 727 (ufs_params.desc_size >= UFS_DESC_SIZE)); 728 729 memset((void *)buf, 0, size); 730 get_utrd(&utrd); 731 ufs_prepare_cmd(&utrd, CDBCMD_WRITE_10, lun, lba, buf, size); 732 ufs_send_request(utrd.task_tag); 733 result = ufs_check_resp(&utrd, RESPONSE_UPIU); 734 assert(result == 0); 735 #ifdef UFS_RESP_DEBUG 736 dump_upiu(&utrd); 737 #endif 738 resp = (resp_upiu_t *)utrd.resp_upiu; 739 (void)result; 740 return size - resp->res_trans_cnt; 741 } 742 743 static void ufs_enum(void) 744 { 745 unsigned int blk_num, blk_size; 746 int i; 747 748 /* 0 means 1 slot */ 749 nutrs = (mmio_read_32(ufs_params.reg_base + CAP) & CAP_NUTRS_MASK) + 1; 750 if (nutrs > (ufs_params.desc_size / UFS_DESC_SIZE)) 751 nutrs = ufs_params.desc_size / UFS_DESC_SIZE; 752 753 ufs_verify_init(); 754 ufs_verify_ready(); 755 756 ufs_set_flag(FLAG_DEVICE_INIT); 757 mdelay(200); 758 /* dump available LUNs */ 759 for (i = 0; i < UFS_MAX_LUNS; i++) { 760 ufs_read_capacity(i, &blk_num, &blk_size); 761 if (blk_num && blk_size) { 762 INFO("UFS LUN%d contains %d blocks with %d-byte size\n", 763 i, blk_num, blk_size); 764 } 765 } 766 } 767 768 static void ufs_get_device_info(struct ufs_dev_desc *card_data) 769 { 770 uint8_t desc_buf[DESC_DEVICE_MAX_SIZE]; 771 772 ufs_query(QUERY_READ_DESC, DESC_TYPE_DEVICE, 0, 0, 773 (uintptr_t)desc_buf, DESC_DEVICE_MAX_SIZE); 774 775 /* 776 * getting vendor (manufacturerID) and Bank Index in big endian 777 * format 778 */ 779 card_data->wmanufacturerid = (uint16_t)((desc_buf[DEVICE_DESC_PARAM_MANF_ID] << 8) | 780 (desc_buf[DEVICE_DESC_PARAM_MANF_ID + 1])); 781 } 782 783 int ufs_init(const ufs_ops_t *ops, ufs_params_t *params) 784 { 785 int result; 786 unsigned int data; 787 uic_cmd_t cmd; 788 struct ufs_dev_desc card = {0}; 789 790 assert((params != NULL) && 791 (params->reg_base != 0) && 792 (params->desc_base != 0) && 793 (params->desc_size >= UFS_DESC_SIZE)); 794 795 memcpy(&ufs_params, params, sizeof(ufs_params_t)); 796 797 if (ufs_params.flags & UFS_FLAGS_SKIPINIT) { 798 result = ufshc_dme_get(0x1571, 0, &data); 799 assert(result == 0); 800 result = ufshc_dme_get(0x41, 0, &data); 801 assert(result == 0); 802 if (data == 1) { 803 /* prepare to exit hibernate mode */ 804 memset(&cmd, 0, sizeof(uic_cmd_t)); 805 cmd.op = DME_HIBERNATE_EXIT; 806 result = ufshc_send_uic_cmd(ufs_params.reg_base, 807 &cmd); 808 assert(result == 0); 809 data = mmio_read_32(ufs_params.reg_base + UCMDARG2); 810 assert(data == 0); 811 do { 812 data = mmio_read_32(ufs_params.reg_base + IS); 813 } while ((data & UFS_INT_UHXS) == 0); 814 mmio_write_32(ufs_params.reg_base + IS, UFS_INT_UHXS); 815 data = mmio_read_32(ufs_params.reg_base + HCS); 816 assert((data & HCS_UPMCRS_MASK) == HCS_PWR_LOCAL); 817 } 818 result = ufshc_dme_get(0x1568, 0, &data); 819 assert(result == 0); 820 assert((data > 0) && (data <= 3)); 821 } else { 822 assert((ops != NULL) && (ops->phy_init != NULL) && 823 (ops->phy_set_pwr_mode != NULL)); 824 825 result = ufshc_reset(ufs_params.reg_base); 826 assert(result == 0); 827 ops->phy_init(&ufs_params); 828 result = ufshc_link_startup(ufs_params.reg_base); 829 assert(result == 0); 830 831 ufs_enum(); 832 833 ufs_get_device_info(&card); 834 if (card.wmanufacturerid == UFS_VENDOR_SKHYNIX) { 835 ufs_params.flags |= UFS_FLAGS_VENDOR_SKHYNIX; 836 } 837 838 ops->phy_set_pwr_mode(&ufs_params); 839 } 840 841 (void)result; 842 return 0; 843 } 844