1 // SPDX-License-Identifier: GPL-2.0 2 // Copyright (C) 2018 Western Digital Corporation 3 4 #include <linux/err.h> 5 #include <linux/string.h> 6 #include <linux/bitfield.h> 7 #include <asm/unaligned.h> 8 9 #include <ufs/ufs.h> 10 #include "ufs-sysfs.h" 11 #include "ufshcd-priv.h" 12 13 static const char *ufshcd_uic_link_state_to_string( 14 enum uic_link_state state) 15 { 16 switch (state) { 17 case UIC_LINK_OFF_STATE: return "OFF"; 18 case UIC_LINK_ACTIVE_STATE: return "ACTIVE"; 19 case UIC_LINK_HIBERN8_STATE: return "HIBERN8"; 20 case UIC_LINK_BROKEN_STATE: return "BROKEN"; 21 default: return "UNKNOWN"; 22 } 23 } 24 25 static const char *ufshcd_ufs_dev_pwr_mode_to_string( 26 enum ufs_dev_pwr_mode state) 27 { 28 switch (state) { 29 case UFS_ACTIVE_PWR_MODE: return "ACTIVE"; 30 case UFS_SLEEP_PWR_MODE: return "SLEEP"; 31 case UFS_POWERDOWN_PWR_MODE: return "POWERDOWN"; 32 case UFS_DEEPSLEEP_PWR_MODE: return "DEEPSLEEP"; 33 default: return "UNKNOWN"; 34 } 35 } 36 37 static inline ssize_t ufs_sysfs_pm_lvl_store(struct device *dev, 38 struct device_attribute *attr, 39 const char *buf, size_t count, 40 bool rpm) 41 { 42 struct ufs_hba *hba = dev_get_drvdata(dev); 43 struct ufs_dev_info *dev_info = &hba->dev_info; 44 unsigned long flags, value; 45 46 if (kstrtoul(buf, 0, &value)) 47 return -EINVAL; 48 49 if (value >= UFS_PM_LVL_MAX) 50 return -EINVAL; 51 52 if (ufs_pm_lvl_states[value].dev_state == UFS_DEEPSLEEP_PWR_MODE && 53 (!(hba->caps & UFSHCD_CAP_DEEPSLEEP) || 54 !(dev_info->wspecversion >= 0x310))) 55 return -EINVAL; 56 57 spin_lock_irqsave(hba->host->host_lock, flags); 58 if (rpm) 59 hba->rpm_lvl = value; 60 else 61 hba->spm_lvl = value; 62 spin_unlock_irqrestore(hba->host->host_lock, flags); 63 return count; 64 } 65 66 static ssize_t rpm_lvl_show(struct device *dev, 67 struct device_attribute *attr, char *buf) 68 { 69 struct ufs_hba *hba = dev_get_drvdata(dev); 70 71 return sysfs_emit(buf, "%d\n", hba->rpm_lvl); 72 } 73 74 static ssize_t rpm_lvl_store(struct device *dev, 75 struct device_attribute *attr, const char *buf, size_t count) 76 { 77 return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, true); 78 } 79 80 static ssize_t rpm_target_dev_state_show(struct device *dev, 81 struct device_attribute *attr, char *buf) 82 { 83 struct ufs_hba *hba = dev_get_drvdata(dev); 84 85 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string( 86 ufs_pm_lvl_states[hba->rpm_lvl].dev_state)); 87 } 88 89 static ssize_t rpm_target_link_state_show(struct device *dev, 90 struct device_attribute *attr, char *buf) 91 { 92 struct ufs_hba *hba = dev_get_drvdata(dev); 93 94 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string( 95 ufs_pm_lvl_states[hba->rpm_lvl].link_state)); 96 } 97 98 static ssize_t spm_lvl_show(struct device *dev, 99 struct device_attribute *attr, char *buf) 100 { 101 struct ufs_hba *hba = dev_get_drvdata(dev); 102 103 return sysfs_emit(buf, "%d\n", hba->spm_lvl); 104 } 105 106 static ssize_t spm_lvl_store(struct device *dev, 107 struct device_attribute *attr, const char *buf, size_t count) 108 { 109 return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, false); 110 } 111 112 static ssize_t spm_target_dev_state_show(struct device *dev, 113 struct device_attribute *attr, char *buf) 114 { 115 struct ufs_hba *hba = dev_get_drvdata(dev); 116 117 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string( 118 ufs_pm_lvl_states[hba->spm_lvl].dev_state)); 119 } 120 121 static ssize_t spm_target_link_state_show(struct device *dev, 122 struct device_attribute *attr, char *buf) 123 { 124 struct ufs_hba *hba = dev_get_drvdata(dev); 125 126 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string( 127 ufs_pm_lvl_states[hba->spm_lvl].link_state)); 128 } 129 130 /* Convert Auto-Hibernate Idle Timer register value to microseconds */ 131 static int ufshcd_ahit_to_us(u32 ahit) 132 { 133 int timer = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, ahit); 134 int scale = FIELD_GET(UFSHCI_AHIBERN8_SCALE_MASK, ahit); 135 136 for (; scale > 0; --scale) 137 timer *= UFSHCI_AHIBERN8_SCALE_FACTOR; 138 139 return timer; 140 } 141 142 /* Convert microseconds to Auto-Hibernate Idle Timer register value */ 143 static u32 ufshcd_us_to_ahit(unsigned int timer) 144 { 145 unsigned int scale; 146 147 for (scale = 0; timer > UFSHCI_AHIBERN8_TIMER_MASK; ++scale) 148 timer /= UFSHCI_AHIBERN8_SCALE_FACTOR; 149 150 return FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, timer) | 151 FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, scale); 152 } 153 154 static ssize_t auto_hibern8_show(struct device *dev, 155 struct device_attribute *attr, char *buf) 156 { 157 u32 ahit; 158 int ret; 159 struct ufs_hba *hba = dev_get_drvdata(dev); 160 161 if (!ufshcd_is_auto_hibern8_supported(hba)) 162 return -EOPNOTSUPP; 163 164 down(&hba->host_sem); 165 if (!ufshcd_is_user_access_allowed(hba)) { 166 ret = -EBUSY; 167 goto out; 168 } 169 170 pm_runtime_get_sync(hba->dev); 171 ufshcd_hold(hba); 172 ahit = ufshcd_readl(hba, REG_AUTO_HIBERNATE_IDLE_TIMER); 173 ufshcd_release(hba); 174 pm_runtime_put_sync(hba->dev); 175 176 ret = sysfs_emit(buf, "%d\n", ufshcd_ahit_to_us(ahit)); 177 178 out: 179 up(&hba->host_sem); 180 return ret; 181 } 182 183 static ssize_t auto_hibern8_store(struct device *dev, 184 struct device_attribute *attr, 185 const char *buf, size_t count) 186 { 187 struct ufs_hba *hba = dev_get_drvdata(dev); 188 unsigned int timer; 189 int ret = 0; 190 191 if (!ufshcd_is_auto_hibern8_supported(hba)) 192 return -EOPNOTSUPP; 193 194 if (kstrtouint(buf, 0, &timer)) 195 return -EINVAL; 196 197 if (timer > UFSHCI_AHIBERN8_MAX) 198 return -EINVAL; 199 200 down(&hba->host_sem); 201 if (!ufshcd_is_user_access_allowed(hba)) { 202 ret = -EBUSY; 203 goto out; 204 } 205 206 ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer)); 207 208 out: 209 up(&hba->host_sem); 210 return ret ? ret : count; 211 } 212 213 static ssize_t wb_on_show(struct device *dev, struct device_attribute *attr, 214 char *buf) 215 { 216 struct ufs_hba *hba = dev_get_drvdata(dev); 217 218 return sysfs_emit(buf, "%d\n", hba->dev_info.wb_enabled); 219 } 220 221 static ssize_t wb_on_store(struct device *dev, struct device_attribute *attr, 222 const char *buf, size_t count) 223 { 224 struct ufs_hba *hba = dev_get_drvdata(dev); 225 unsigned int wb_enable; 226 ssize_t res; 227 228 if (!ufshcd_is_wb_allowed(hba) || (ufshcd_is_clkscaling_supported(hba) 229 && ufshcd_enable_wb_if_scaling_up(hba))) { 230 /* 231 * If the platform supports UFSHCD_CAP_CLK_SCALING, turn WB 232 * on/off will be done while clock scaling up/down. 233 */ 234 dev_warn(dev, "It is not allowed to configure WB!\n"); 235 return -EOPNOTSUPP; 236 } 237 238 if (kstrtouint(buf, 0, &wb_enable)) 239 return -EINVAL; 240 241 if (wb_enable != 0 && wb_enable != 1) 242 return -EINVAL; 243 244 down(&hba->host_sem); 245 if (!ufshcd_is_user_access_allowed(hba)) { 246 res = -EBUSY; 247 goto out; 248 } 249 250 ufshcd_rpm_get_sync(hba); 251 res = ufshcd_wb_toggle(hba, wb_enable); 252 ufshcd_rpm_put_sync(hba); 253 out: 254 up(&hba->host_sem); 255 return res < 0 ? res : count; 256 } 257 258 static ssize_t enable_wb_buf_flush_show(struct device *dev, 259 struct device_attribute *attr, 260 char *buf) 261 { 262 struct ufs_hba *hba = dev_get_drvdata(dev); 263 264 return sysfs_emit(buf, "%d\n", hba->dev_info.wb_buf_flush_enabled); 265 } 266 267 static ssize_t enable_wb_buf_flush_store(struct device *dev, 268 struct device_attribute *attr, 269 const char *buf, size_t count) 270 { 271 struct ufs_hba *hba = dev_get_drvdata(dev); 272 unsigned int enable_wb_buf_flush; 273 ssize_t res; 274 275 if (!ufshcd_is_wb_buf_flush_allowed(hba)) { 276 dev_warn(dev, "It is not allowed to configure WB buf flushing!\n"); 277 return -EOPNOTSUPP; 278 } 279 280 if (kstrtouint(buf, 0, &enable_wb_buf_flush)) 281 return -EINVAL; 282 283 if (enable_wb_buf_flush != 0 && enable_wb_buf_flush != 1) 284 return -EINVAL; 285 286 down(&hba->host_sem); 287 if (!ufshcd_is_user_access_allowed(hba)) { 288 res = -EBUSY; 289 goto out; 290 } 291 292 ufshcd_rpm_get_sync(hba); 293 res = ufshcd_wb_toggle_buf_flush(hba, enable_wb_buf_flush); 294 ufshcd_rpm_put_sync(hba); 295 296 out: 297 up(&hba->host_sem); 298 return res < 0 ? res : count; 299 } 300 301 static ssize_t wb_flush_threshold_show(struct device *dev, 302 struct device_attribute *attr, 303 char *buf) 304 { 305 struct ufs_hba *hba = dev_get_drvdata(dev); 306 307 return sysfs_emit(buf, "%u\n", hba->vps->wb_flush_threshold); 308 } 309 310 static ssize_t wb_flush_threshold_store(struct device *dev, 311 struct device_attribute *attr, 312 const char *buf, size_t count) 313 { 314 struct ufs_hba *hba = dev_get_drvdata(dev); 315 unsigned int wb_flush_threshold; 316 317 if (kstrtouint(buf, 0, &wb_flush_threshold)) 318 return -EINVAL; 319 320 /* The range of values for wb_flush_threshold is (0,10] */ 321 if (wb_flush_threshold > UFS_WB_BUF_REMAIN_PERCENT(100) || 322 wb_flush_threshold == 0) { 323 dev_err(dev, "The value of wb_flush_threshold is invalid!\n"); 324 return -EINVAL; 325 } 326 327 hba->vps->wb_flush_threshold = wb_flush_threshold; 328 329 return count; 330 } 331 332 static DEVICE_ATTR_RW(rpm_lvl); 333 static DEVICE_ATTR_RO(rpm_target_dev_state); 334 static DEVICE_ATTR_RO(rpm_target_link_state); 335 static DEVICE_ATTR_RW(spm_lvl); 336 static DEVICE_ATTR_RO(spm_target_dev_state); 337 static DEVICE_ATTR_RO(spm_target_link_state); 338 static DEVICE_ATTR_RW(auto_hibern8); 339 static DEVICE_ATTR_RW(wb_on); 340 static DEVICE_ATTR_RW(enable_wb_buf_flush); 341 static DEVICE_ATTR_RW(wb_flush_threshold); 342 343 static struct attribute *ufs_sysfs_ufshcd_attrs[] = { 344 &dev_attr_rpm_lvl.attr, 345 &dev_attr_rpm_target_dev_state.attr, 346 &dev_attr_rpm_target_link_state.attr, 347 &dev_attr_spm_lvl.attr, 348 &dev_attr_spm_target_dev_state.attr, 349 &dev_attr_spm_target_link_state.attr, 350 &dev_attr_auto_hibern8.attr, 351 &dev_attr_wb_on.attr, 352 &dev_attr_enable_wb_buf_flush.attr, 353 &dev_attr_wb_flush_threshold.attr, 354 NULL 355 }; 356 357 static const struct attribute_group ufs_sysfs_default_group = { 358 .attrs = ufs_sysfs_ufshcd_attrs, 359 }; 360 361 static ssize_t clock_scaling_show(struct device *dev, struct device_attribute *attr, 362 char *buf) 363 { 364 struct ufs_hba *hba = dev_get_drvdata(dev); 365 366 return sysfs_emit(buf, "%d\n", ufshcd_is_clkscaling_supported(hba)); 367 } 368 369 static ssize_t write_booster_show(struct device *dev, struct device_attribute *attr, 370 char *buf) 371 { 372 struct ufs_hba *hba = dev_get_drvdata(dev); 373 374 return sysfs_emit(buf, "%d\n", ufshcd_is_wb_allowed(hba)); 375 } 376 377 static DEVICE_ATTR_RO(clock_scaling); 378 static DEVICE_ATTR_RO(write_booster); 379 380 /* 381 * See Documentation/ABI/testing/sysfs-driver-ufs for the semantics of this 382 * group. 383 */ 384 static struct attribute *ufs_sysfs_capabilities_attrs[] = { 385 &dev_attr_clock_scaling.attr, 386 &dev_attr_write_booster.attr, 387 NULL 388 }; 389 390 static const struct attribute_group ufs_sysfs_capabilities_group = { 391 .name = "capabilities", 392 .attrs = ufs_sysfs_capabilities_attrs, 393 }; 394 395 static ssize_t monitor_enable_show(struct device *dev, 396 struct device_attribute *attr, char *buf) 397 { 398 struct ufs_hba *hba = dev_get_drvdata(dev); 399 400 return sysfs_emit(buf, "%d\n", hba->monitor.enabled); 401 } 402 403 static ssize_t monitor_enable_store(struct device *dev, 404 struct device_attribute *attr, 405 const char *buf, size_t count) 406 { 407 struct ufs_hba *hba = dev_get_drvdata(dev); 408 unsigned long value, flags; 409 410 if (kstrtoul(buf, 0, &value)) 411 return -EINVAL; 412 413 value = !!value; 414 spin_lock_irqsave(hba->host->host_lock, flags); 415 if (value == hba->monitor.enabled) 416 goto out_unlock; 417 418 if (!value) { 419 memset(&hba->monitor, 0, sizeof(hba->monitor)); 420 } else { 421 hba->monitor.enabled = true; 422 hba->monitor.enabled_ts = ktime_get(); 423 } 424 425 out_unlock: 426 spin_unlock_irqrestore(hba->host->host_lock, flags); 427 return count; 428 } 429 430 static ssize_t monitor_chunk_size_show(struct device *dev, 431 struct device_attribute *attr, char *buf) 432 { 433 struct ufs_hba *hba = dev_get_drvdata(dev); 434 435 return sysfs_emit(buf, "%lu\n", hba->monitor.chunk_size); 436 } 437 438 static ssize_t monitor_chunk_size_store(struct device *dev, 439 struct device_attribute *attr, 440 const char *buf, size_t count) 441 { 442 struct ufs_hba *hba = dev_get_drvdata(dev); 443 unsigned long value, flags; 444 445 if (kstrtoul(buf, 0, &value)) 446 return -EINVAL; 447 448 spin_lock_irqsave(hba->host->host_lock, flags); 449 /* Only allow chunk size change when monitor is disabled */ 450 if (!hba->monitor.enabled) 451 hba->monitor.chunk_size = value; 452 spin_unlock_irqrestore(hba->host->host_lock, flags); 453 return count; 454 } 455 456 static ssize_t read_total_sectors_show(struct device *dev, 457 struct device_attribute *attr, char *buf) 458 { 459 struct ufs_hba *hba = dev_get_drvdata(dev); 460 461 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[READ]); 462 } 463 464 static ssize_t read_total_busy_show(struct device *dev, 465 struct device_attribute *attr, char *buf) 466 { 467 struct ufs_hba *hba = dev_get_drvdata(dev); 468 469 return sysfs_emit(buf, "%llu\n", 470 ktime_to_us(hba->monitor.total_busy[READ])); 471 } 472 473 static ssize_t read_nr_requests_show(struct device *dev, 474 struct device_attribute *attr, char *buf) 475 { 476 struct ufs_hba *hba = dev_get_drvdata(dev); 477 478 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[READ]); 479 } 480 481 static ssize_t read_req_latency_avg_show(struct device *dev, 482 struct device_attribute *attr, 483 char *buf) 484 { 485 struct ufs_hba *hba = dev_get_drvdata(dev); 486 struct ufs_hba_monitor *m = &hba->monitor; 487 488 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[READ]), 489 m->nr_req[READ])); 490 } 491 492 static ssize_t read_req_latency_max_show(struct device *dev, 493 struct device_attribute *attr, 494 char *buf) 495 { 496 struct ufs_hba *hba = dev_get_drvdata(dev); 497 498 return sysfs_emit(buf, "%llu\n", 499 ktime_to_us(hba->monitor.lat_max[READ])); 500 } 501 502 static ssize_t read_req_latency_min_show(struct device *dev, 503 struct device_attribute *attr, 504 char *buf) 505 { 506 struct ufs_hba *hba = dev_get_drvdata(dev); 507 508 return sysfs_emit(buf, "%llu\n", 509 ktime_to_us(hba->monitor.lat_min[READ])); 510 } 511 512 static ssize_t read_req_latency_sum_show(struct device *dev, 513 struct device_attribute *attr, 514 char *buf) 515 { 516 struct ufs_hba *hba = dev_get_drvdata(dev); 517 518 return sysfs_emit(buf, "%llu\n", 519 ktime_to_us(hba->monitor.lat_sum[READ])); 520 } 521 522 static ssize_t write_total_sectors_show(struct device *dev, 523 struct device_attribute *attr, 524 char *buf) 525 { 526 struct ufs_hba *hba = dev_get_drvdata(dev); 527 528 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[WRITE]); 529 } 530 531 static ssize_t write_total_busy_show(struct device *dev, 532 struct device_attribute *attr, char *buf) 533 { 534 struct ufs_hba *hba = dev_get_drvdata(dev); 535 536 return sysfs_emit(buf, "%llu\n", 537 ktime_to_us(hba->monitor.total_busy[WRITE])); 538 } 539 540 static ssize_t write_nr_requests_show(struct device *dev, 541 struct device_attribute *attr, char *buf) 542 { 543 struct ufs_hba *hba = dev_get_drvdata(dev); 544 545 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[WRITE]); 546 } 547 548 static ssize_t write_req_latency_avg_show(struct device *dev, 549 struct device_attribute *attr, 550 char *buf) 551 { 552 struct ufs_hba *hba = dev_get_drvdata(dev); 553 struct ufs_hba_monitor *m = &hba->monitor; 554 555 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[WRITE]), 556 m->nr_req[WRITE])); 557 } 558 559 static ssize_t write_req_latency_max_show(struct device *dev, 560 struct device_attribute *attr, 561 char *buf) 562 { 563 struct ufs_hba *hba = dev_get_drvdata(dev); 564 565 return sysfs_emit(buf, "%llu\n", 566 ktime_to_us(hba->monitor.lat_max[WRITE])); 567 } 568 569 static ssize_t write_req_latency_min_show(struct device *dev, 570 struct device_attribute *attr, 571 char *buf) 572 { 573 struct ufs_hba *hba = dev_get_drvdata(dev); 574 575 return sysfs_emit(buf, "%llu\n", 576 ktime_to_us(hba->monitor.lat_min[WRITE])); 577 } 578 579 static ssize_t write_req_latency_sum_show(struct device *dev, 580 struct device_attribute *attr, 581 char *buf) 582 { 583 struct ufs_hba *hba = dev_get_drvdata(dev); 584 585 return sysfs_emit(buf, "%llu\n", 586 ktime_to_us(hba->monitor.lat_sum[WRITE])); 587 } 588 589 static DEVICE_ATTR_RW(monitor_enable); 590 static DEVICE_ATTR_RW(monitor_chunk_size); 591 static DEVICE_ATTR_RO(read_total_sectors); 592 static DEVICE_ATTR_RO(read_total_busy); 593 static DEVICE_ATTR_RO(read_nr_requests); 594 static DEVICE_ATTR_RO(read_req_latency_avg); 595 static DEVICE_ATTR_RO(read_req_latency_max); 596 static DEVICE_ATTR_RO(read_req_latency_min); 597 static DEVICE_ATTR_RO(read_req_latency_sum); 598 static DEVICE_ATTR_RO(write_total_sectors); 599 static DEVICE_ATTR_RO(write_total_busy); 600 static DEVICE_ATTR_RO(write_nr_requests); 601 static DEVICE_ATTR_RO(write_req_latency_avg); 602 static DEVICE_ATTR_RO(write_req_latency_max); 603 static DEVICE_ATTR_RO(write_req_latency_min); 604 static DEVICE_ATTR_RO(write_req_latency_sum); 605 606 static struct attribute *ufs_sysfs_monitor_attrs[] = { 607 &dev_attr_monitor_enable.attr, 608 &dev_attr_monitor_chunk_size.attr, 609 &dev_attr_read_total_sectors.attr, 610 &dev_attr_read_total_busy.attr, 611 &dev_attr_read_nr_requests.attr, 612 &dev_attr_read_req_latency_avg.attr, 613 &dev_attr_read_req_latency_max.attr, 614 &dev_attr_read_req_latency_min.attr, 615 &dev_attr_read_req_latency_sum.attr, 616 &dev_attr_write_total_sectors.attr, 617 &dev_attr_write_total_busy.attr, 618 &dev_attr_write_nr_requests.attr, 619 &dev_attr_write_req_latency_avg.attr, 620 &dev_attr_write_req_latency_max.attr, 621 &dev_attr_write_req_latency_min.attr, 622 &dev_attr_write_req_latency_sum.attr, 623 NULL 624 }; 625 626 static const struct attribute_group ufs_sysfs_monitor_group = { 627 .name = "monitor", 628 .attrs = ufs_sysfs_monitor_attrs, 629 }; 630 631 static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba, 632 enum desc_idn desc_id, 633 u8 desc_index, 634 u8 param_offset, 635 u8 *sysfs_buf, 636 u8 param_size) 637 { 638 u8 desc_buf[8] = {0}; 639 int ret; 640 641 if (param_size > 8) 642 return -EINVAL; 643 644 down(&hba->host_sem); 645 if (!ufshcd_is_user_access_allowed(hba)) { 646 ret = -EBUSY; 647 goto out; 648 } 649 650 ufshcd_rpm_get_sync(hba); 651 ret = ufshcd_read_desc_param(hba, desc_id, desc_index, 652 param_offset, desc_buf, param_size); 653 ufshcd_rpm_put_sync(hba); 654 if (ret) { 655 ret = -EINVAL; 656 goto out; 657 } 658 659 switch (param_size) { 660 case 1: 661 ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf); 662 break; 663 case 2: 664 ret = sysfs_emit(sysfs_buf, "0x%04X\n", 665 get_unaligned_be16(desc_buf)); 666 break; 667 case 4: 668 ret = sysfs_emit(sysfs_buf, "0x%08X\n", 669 get_unaligned_be32(desc_buf)); 670 break; 671 case 8: 672 ret = sysfs_emit(sysfs_buf, "0x%016llX\n", 673 get_unaligned_be64(desc_buf)); 674 break; 675 } 676 677 out: 678 up(&hba->host_sem); 679 return ret; 680 } 681 682 #define UFS_DESC_PARAM(_name, _puname, _duname, _size) \ 683 static ssize_t _name##_show(struct device *dev, \ 684 struct device_attribute *attr, char *buf) \ 685 { \ 686 struct ufs_hba *hba = dev_get_drvdata(dev); \ 687 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ 688 0, _duname##_DESC_PARAM##_puname, buf, _size); \ 689 } \ 690 static DEVICE_ATTR_RO(_name) 691 692 #define UFS_DEVICE_DESC_PARAM(_name, _uname, _size) \ 693 UFS_DESC_PARAM(_name, _uname, DEVICE, _size) 694 695 UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1); 696 UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1); 697 UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1); 698 UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1); 699 UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1); 700 UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1); 701 UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1); 702 UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1); 703 UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1); 704 UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1); 705 UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1); 706 UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1); 707 UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1); 708 UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1); 709 UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2); 710 UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2); 711 UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2); 712 UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1); 713 UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2); 714 UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1); 715 UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1); 716 UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1); 717 UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2); 718 UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1); 719 UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4); 720 UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1); 721 UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4); 722 UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1); 723 UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1); 724 UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4); 725 726 static struct attribute *ufs_sysfs_device_descriptor[] = { 727 &dev_attr_device_type.attr, 728 &dev_attr_device_class.attr, 729 &dev_attr_device_sub_class.attr, 730 &dev_attr_protocol.attr, 731 &dev_attr_number_of_luns.attr, 732 &dev_attr_number_of_wluns.attr, 733 &dev_attr_boot_enable.attr, 734 &dev_attr_descriptor_access_enable.attr, 735 &dev_attr_initial_power_mode.attr, 736 &dev_attr_high_priority_lun.attr, 737 &dev_attr_secure_removal_type.attr, 738 &dev_attr_support_security_lun.attr, 739 &dev_attr_bkops_termination_latency.attr, 740 &dev_attr_initial_active_icc_level.attr, 741 &dev_attr_specification_version.attr, 742 &dev_attr_manufacturing_date.attr, 743 &dev_attr_manufacturer_id.attr, 744 &dev_attr_rtt_capability.attr, 745 &dev_attr_rtc_update.attr, 746 &dev_attr_ufs_features.attr, 747 &dev_attr_ffu_timeout.attr, 748 &dev_attr_queue_depth.attr, 749 &dev_attr_device_version.attr, 750 &dev_attr_number_of_secure_wpa.attr, 751 &dev_attr_psa_max_data_size.attr, 752 &dev_attr_psa_state_timeout.attr, 753 &dev_attr_ext_feature_sup.attr, 754 &dev_attr_wb_presv_us_en.attr, 755 &dev_attr_wb_type.attr, 756 &dev_attr_wb_shared_alloc_units.attr, 757 NULL, 758 }; 759 760 static const struct attribute_group ufs_sysfs_device_descriptor_group = { 761 .name = "device_descriptor", 762 .attrs = ufs_sysfs_device_descriptor, 763 }; 764 765 #define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size) \ 766 UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size) 767 768 UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2); 769 UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2); 770 771 static struct attribute *ufs_sysfs_interconnect_descriptor[] = { 772 &dev_attr_unipro_version.attr, 773 &dev_attr_mphy_version.attr, 774 NULL, 775 }; 776 777 static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = { 778 .name = "interconnect_descriptor", 779 .attrs = ufs_sysfs_interconnect_descriptor, 780 }; 781 782 #define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size) \ 783 UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size) 784 785 UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8); 786 UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1); 787 UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4); 788 UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1); 789 UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1); 790 UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1); 791 UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1); 792 UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1); 793 UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1); 794 UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1); 795 UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1); 796 UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1); 797 UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1); 798 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1); 799 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1); 800 UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1); 801 UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2); 802 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units, 803 _SCM_MAX_NUM_UNITS, 4); 804 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor, 805 _SCM_CAP_ADJ_FCTR, 2); 806 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units, 807 _NPM_MAX_NUM_UNITS, 4); 808 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor, 809 _NPM_CAP_ADJ_FCTR, 2); 810 UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units, 811 _ENM1_MAX_NUM_UNITS, 4); 812 UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor, 813 _ENM1_CAP_ADJ_FCTR, 2); 814 UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units, 815 _ENM2_MAX_NUM_UNITS, 4); 816 UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor, 817 _ENM2_CAP_ADJ_FCTR, 2); 818 UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units, 819 _ENM3_MAX_NUM_UNITS, 4); 820 UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor, 821 _ENM3_CAP_ADJ_FCTR, 2); 822 UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units, 823 _ENM4_MAX_NUM_UNITS, 4); 824 UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor, 825 _ENM4_CAP_ADJ_FCTR, 2); 826 UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4); 827 UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1); 828 UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1); 829 UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1); 830 UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1); 831 832 833 static struct attribute *ufs_sysfs_geometry_descriptor[] = { 834 &dev_attr_raw_device_capacity.attr, 835 &dev_attr_max_number_of_luns.attr, 836 &dev_attr_segment_size.attr, 837 &dev_attr_allocation_unit_size.attr, 838 &dev_attr_min_addressable_block_size.attr, 839 &dev_attr_optimal_read_block_size.attr, 840 &dev_attr_optimal_write_block_size.attr, 841 &dev_attr_max_in_buffer_size.attr, 842 &dev_attr_max_out_buffer_size.attr, 843 &dev_attr_rpmb_rw_size.attr, 844 &dev_attr_dyn_capacity_resource_policy.attr, 845 &dev_attr_data_ordering.attr, 846 &dev_attr_max_number_of_contexts.attr, 847 &dev_attr_sys_data_tag_unit_size.attr, 848 &dev_attr_sys_data_tag_resource_size.attr, 849 &dev_attr_secure_removal_types.attr, 850 &dev_attr_memory_types.attr, 851 &dev_attr_sys_code_memory_max_alloc_units.attr, 852 &dev_attr_sys_code_memory_capacity_adjustment_factor.attr, 853 &dev_attr_non_persist_memory_max_alloc_units.attr, 854 &dev_attr_non_persist_memory_capacity_adjustment_factor.attr, 855 &dev_attr_enh1_memory_max_alloc_units.attr, 856 &dev_attr_enh1_memory_capacity_adjustment_factor.attr, 857 &dev_attr_enh2_memory_max_alloc_units.attr, 858 &dev_attr_enh2_memory_capacity_adjustment_factor.attr, 859 &dev_attr_enh3_memory_max_alloc_units.attr, 860 &dev_attr_enh3_memory_capacity_adjustment_factor.attr, 861 &dev_attr_enh4_memory_max_alloc_units.attr, 862 &dev_attr_enh4_memory_capacity_adjustment_factor.attr, 863 &dev_attr_wb_max_alloc_units.attr, 864 &dev_attr_wb_max_wb_luns.attr, 865 &dev_attr_wb_buff_cap_adj.attr, 866 &dev_attr_wb_sup_red_type.attr, 867 &dev_attr_wb_sup_wb_type.attr, 868 NULL, 869 }; 870 871 static const struct attribute_group ufs_sysfs_geometry_descriptor_group = { 872 .name = "geometry_descriptor", 873 .attrs = ufs_sysfs_geometry_descriptor, 874 }; 875 876 #define UFS_HEALTH_DESC_PARAM(_name, _uname, _size) \ 877 UFS_DESC_PARAM(_name, _uname, HEALTH, _size) 878 879 UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1); 880 UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1); 881 UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1); 882 883 static struct attribute *ufs_sysfs_health_descriptor[] = { 884 &dev_attr_eol_info.attr, 885 &dev_attr_life_time_estimation_a.attr, 886 &dev_attr_life_time_estimation_b.attr, 887 NULL, 888 }; 889 890 static const struct attribute_group ufs_sysfs_health_descriptor_group = { 891 .name = "health_descriptor", 892 .attrs = ufs_sysfs_health_descriptor, 893 }; 894 895 #define UFS_POWER_DESC_PARAM(_name, _uname, _index) \ 896 static ssize_t _name##_index##_show(struct device *dev, \ 897 struct device_attribute *attr, char *buf) \ 898 { \ 899 struct ufs_hba *hba = dev_get_drvdata(dev); \ 900 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, \ 901 PWR_DESC##_uname##_0 + _index * 2, buf, 2); \ 902 } \ 903 static DEVICE_ATTR_RO(_name##_index) 904 905 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0); 906 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1); 907 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2); 908 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3); 909 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4); 910 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5); 911 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6); 912 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7); 913 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8); 914 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9); 915 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10); 916 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11); 917 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12); 918 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13); 919 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14); 920 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15); 921 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0); 922 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1); 923 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2); 924 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3); 925 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4); 926 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5); 927 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6); 928 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7); 929 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8); 930 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9); 931 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10); 932 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11); 933 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12); 934 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13); 935 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14); 936 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15); 937 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0); 938 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1); 939 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2); 940 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3); 941 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4); 942 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5); 943 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6); 944 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7); 945 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8); 946 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9); 947 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10); 948 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11); 949 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12); 950 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13); 951 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14); 952 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15); 953 954 static struct attribute *ufs_sysfs_power_descriptor[] = { 955 &dev_attr_active_icc_levels_vcc0.attr, 956 &dev_attr_active_icc_levels_vcc1.attr, 957 &dev_attr_active_icc_levels_vcc2.attr, 958 &dev_attr_active_icc_levels_vcc3.attr, 959 &dev_attr_active_icc_levels_vcc4.attr, 960 &dev_attr_active_icc_levels_vcc5.attr, 961 &dev_attr_active_icc_levels_vcc6.attr, 962 &dev_attr_active_icc_levels_vcc7.attr, 963 &dev_attr_active_icc_levels_vcc8.attr, 964 &dev_attr_active_icc_levels_vcc9.attr, 965 &dev_attr_active_icc_levels_vcc10.attr, 966 &dev_attr_active_icc_levels_vcc11.attr, 967 &dev_attr_active_icc_levels_vcc12.attr, 968 &dev_attr_active_icc_levels_vcc13.attr, 969 &dev_attr_active_icc_levels_vcc14.attr, 970 &dev_attr_active_icc_levels_vcc15.attr, 971 &dev_attr_active_icc_levels_vccq0.attr, 972 &dev_attr_active_icc_levels_vccq1.attr, 973 &dev_attr_active_icc_levels_vccq2.attr, 974 &dev_attr_active_icc_levels_vccq3.attr, 975 &dev_attr_active_icc_levels_vccq4.attr, 976 &dev_attr_active_icc_levels_vccq5.attr, 977 &dev_attr_active_icc_levels_vccq6.attr, 978 &dev_attr_active_icc_levels_vccq7.attr, 979 &dev_attr_active_icc_levels_vccq8.attr, 980 &dev_attr_active_icc_levels_vccq9.attr, 981 &dev_attr_active_icc_levels_vccq10.attr, 982 &dev_attr_active_icc_levels_vccq11.attr, 983 &dev_attr_active_icc_levels_vccq12.attr, 984 &dev_attr_active_icc_levels_vccq13.attr, 985 &dev_attr_active_icc_levels_vccq14.attr, 986 &dev_attr_active_icc_levels_vccq15.attr, 987 &dev_attr_active_icc_levels_vccq20.attr, 988 &dev_attr_active_icc_levels_vccq21.attr, 989 &dev_attr_active_icc_levels_vccq22.attr, 990 &dev_attr_active_icc_levels_vccq23.attr, 991 &dev_attr_active_icc_levels_vccq24.attr, 992 &dev_attr_active_icc_levels_vccq25.attr, 993 &dev_attr_active_icc_levels_vccq26.attr, 994 &dev_attr_active_icc_levels_vccq27.attr, 995 &dev_attr_active_icc_levels_vccq28.attr, 996 &dev_attr_active_icc_levels_vccq29.attr, 997 &dev_attr_active_icc_levels_vccq210.attr, 998 &dev_attr_active_icc_levels_vccq211.attr, 999 &dev_attr_active_icc_levels_vccq212.attr, 1000 &dev_attr_active_icc_levels_vccq213.attr, 1001 &dev_attr_active_icc_levels_vccq214.attr, 1002 &dev_attr_active_icc_levels_vccq215.attr, 1003 NULL, 1004 }; 1005 1006 static const struct attribute_group ufs_sysfs_power_descriptor_group = { 1007 .name = "power_descriptor", 1008 .attrs = ufs_sysfs_power_descriptor, 1009 }; 1010 1011 #define UFS_STRING_DESCRIPTOR(_name, _pname) \ 1012 static ssize_t _name##_show(struct device *dev, \ 1013 struct device_attribute *attr, char *buf) \ 1014 { \ 1015 u8 index; \ 1016 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1017 int ret; \ 1018 int desc_len = QUERY_DESC_MAX_SIZE; \ 1019 u8 *desc_buf; \ 1020 \ 1021 down(&hba->host_sem); \ 1022 if (!ufshcd_is_user_access_allowed(hba)) { \ 1023 up(&hba->host_sem); \ 1024 return -EBUSY; \ 1025 } \ 1026 desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC); \ 1027 if (!desc_buf) { \ 1028 up(&hba->host_sem); \ 1029 return -ENOMEM; \ 1030 } \ 1031 ufshcd_rpm_get_sync(hba); \ 1032 ret = ufshcd_query_descriptor_retry(hba, \ 1033 UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE, \ 1034 0, 0, desc_buf, &desc_len); \ 1035 if (ret) { \ 1036 ret = -EINVAL; \ 1037 goto out; \ 1038 } \ 1039 index = desc_buf[DEVICE_DESC_PARAM##_pname]; \ 1040 kfree(desc_buf); \ 1041 desc_buf = NULL; \ 1042 ret = ufshcd_read_string_desc(hba, index, &desc_buf, \ 1043 SD_ASCII_STD); \ 1044 if (ret < 0) \ 1045 goto out; \ 1046 ret = sysfs_emit(buf, "%s\n", desc_buf); \ 1047 out: \ 1048 ufshcd_rpm_put_sync(hba); \ 1049 kfree(desc_buf); \ 1050 up(&hba->host_sem); \ 1051 return ret; \ 1052 } \ 1053 static DEVICE_ATTR_RO(_name) 1054 1055 UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME); 1056 UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME); 1057 UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID); 1058 UFS_STRING_DESCRIPTOR(serial_number, _SN); 1059 UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV); 1060 1061 static struct attribute *ufs_sysfs_string_descriptors[] = { 1062 &dev_attr_manufacturer_name.attr, 1063 &dev_attr_product_name.attr, 1064 &dev_attr_oem_id.attr, 1065 &dev_attr_serial_number.attr, 1066 &dev_attr_product_revision.attr, 1067 NULL, 1068 }; 1069 1070 static const struct attribute_group ufs_sysfs_string_descriptors_group = { 1071 .name = "string_descriptors", 1072 .attrs = ufs_sysfs_string_descriptors, 1073 }; 1074 1075 static inline bool ufshcd_is_wb_flags(enum flag_idn idn) 1076 { 1077 return idn >= QUERY_FLAG_IDN_WB_EN && 1078 idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8; 1079 } 1080 1081 #define UFS_FLAG(_name, _uname) \ 1082 static ssize_t _name##_show(struct device *dev, \ 1083 struct device_attribute *attr, char *buf) \ 1084 { \ 1085 bool flag; \ 1086 u8 index = 0; \ 1087 int ret; \ 1088 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1089 \ 1090 down(&hba->host_sem); \ 1091 if (!ufshcd_is_user_access_allowed(hba)) { \ 1092 up(&hba->host_sem); \ 1093 return -EBUSY; \ 1094 } \ 1095 if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname)) \ 1096 index = ufshcd_wb_get_query_index(hba); \ 1097 ufshcd_rpm_get_sync(hba); \ 1098 ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \ 1099 QUERY_FLAG_IDN##_uname, index, &flag); \ 1100 ufshcd_rpm_put_sync(hba); \ 1101 if (ret) { \ 1102 ret = -EINVAL; \ 1103 goto out; \ 1104 } \ 1105 ret = sysfs_emit(buf, "%s\n", flag ? "true" : "false"); \ 1106 out: \ 1107 up(&hba->host_sem); \ 1108 return ret; \ 1109 } \ 1110 static DEVICE_ATTR_RO(_name) 1111 1112 UFS_FLAG(device_init, _FDEVICEINIT); 1113 UFS_FLAG(permanent_wpe, _PERMANENT_WPE); 1114 UFS_FLAG(power_on_wpe, _PWR_ON_WPE); 1115 UFS_FLAG(bkops_enable, _BKOPS_EN); 1116 UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE); 1117 UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL); 1118 UFS_FLAG(busy_rtc, _BUSY_RTC); 1119 UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE); 1120 UFS_FLAG(wb_enable, _WB_EN); 1121 UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN); 1122 UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8); 1123 1124 static struct attribute *ufs_sysfs_device_flags[] = { 1125 &dev_attr_device_init.attr, 1126 &dev_attr_permanent_wpe.attr, 1127 &dev_attr_power_on_wpe.attr, 1128 &dev_attr_bkops_enable.attr, 1129 &dev_attr_life_span_mode_enable.attr, 1130 &dev_attr_phy_resource_removal.attr, 1131 &dev_attr_busy_rtc.attr, 1132 &dev_attr_disable_fw_update.attr, 1133 &dev_attr_wb_enable.attr, 1134 &dev_attr_wb_flush_en.attr, 1135 &dev_attr_wb_flush_during_h8.attr, 1136 NULL, 1137 }; 1138 1139 static const struct attribute_group ufs_sysfs_flags_group = { 1140 .name = "flags", 1141 .attrs = ufs_sysfs_device_flags, 1142 }; 1143 1144 static inline bool ufshcd_is_wb_attrs(enum attr_idn idn) 1145 { 1146 return idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS && 1147 idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE; 1148 } 1149 1150 #define UFS_ATTRIBUTE(_name, _uname) \ 1151 static ssize_t _name##_show(struct device *dev, \ 1152 struct device_attribute *attr, char *buf) \ 1153 { \ 1154 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1155 u32 value; \ 1156 int ret; \ 1157 u8 index = 0; \ 1158 \ 1159 down(&hba->host_sem); \ 1160 if (!ufshcd_is_user_access_allowed(hba)) { \ 1161 up(&hba->host_sem); \ 1162 return -EBUSY; \ 1163 } \ 1164 if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname)) \ 1165 index = ufshcd_wb_get_query_index(hba); \ 1166 ufshcd_rpm_get_sync(hba); \ 1167 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, \ 1168 QUERY_ATTR_IDN##_uname, index, 0, &value); \ 1169 ufshcd_rpm_put_sync(hba); \ 1170 if (ret) { \ 1171 ret = -EINVAL; \ 1172 goto out; \ 1173 } \ 1174 ret = sysfs_emit(buf, "0x%08X\n", value); \ 1175 out: \ 1176 up(&hba->host_sem); \ 1177 return ret; \ 1178 } \ 1179 static DEVICE_ATTR_RO(_name) 1180 1181 UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN); 1182 UFS_ATTRIBUTE(current_power_mode, _POWER_MODE); 1183 UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL); 1184 UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN); 1185 UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS); 1186 UFS_ATTRIBUTE(purge_status, _PURGE_STATUS); 1187 UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN); 1188 UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT); 1189 UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ); 1190 UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK); 1191 UFS_ATTRIBUTE(max_number_of_rtt, _MAX_NUM_OF_RTT); 1192 UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL); 1193 UFS_ATTRIBUTE(exception_event_status, _EE_STATUS); 1194 UFS_ATTRIBUTE(ffu_status, _FFU_STATUS); 1195 UFS_ATTRIBUTE(psa_state, _PSA_STATE); 1196 UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE); 1197 UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS); 1198 UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE); 1199 UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST); 1200 UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE); 1201 1202 1203 static struct attribute *ufs_sysfs_attributes[] = { 1204 &dev_attr_boot_lun_enabled.attr, 1205 &dev_attr_current_power_mode.attr, 1206 &dev_attr_active_icc_level.attr, 1207 &dev_attr_ooo_data_enabled.attr, 1208 &dev_attr_bkops_status.attr, 1209 &dev_attr_purge_status.attr, 1210 &dev_attr_max_data_in_size.attr, 1211 &dev_attr_max_data_out_size.attr, 1212 &dev_attr_reference_clock_frequency.attr, 1213 &dev_attr_configuration_descriptor_lock.attr, 1214 &dev_attr_max_number_of_rtt.attr, 1215 &dev_attr_exception_event_control.attr, 1216 &dev_attr_exception_event_status.attr, 1217 &dev_attr_ffu_status.attr, 1218 &dev_attr_psa_state.attr, 1219 &dev_attr_psa_data_size.attr, 1220 &dev_attr_wb_flush_status.attr, 1221 &dev_attr_wb_avail_buf.attr, 1222 &dev_attr_wb_life_time_est.attr, 1223 &dev_attr_wb_cur_buf.attr, 1224 NULL, 1225 }; 1226 1227 static const struct attribute_group ufs_sysfs_attributes_group = { 1228 .name = "attributes", 1229 .attrs = ufs_sysfs_attributes, 1230 }; 1231 1232 static const struct attribute_group *ufs_sysfs_groups[] = { 1233 &ufs_sysfs_default_group, 1234 &ufs_sysfs_capabilities_group, 1235 &ufs_sysfs_monitor_group, 1236 &ufs_sysfs_device_descriptor_group, 1237 &ufs_sysfs_interconnect_descriptor_group, 1238 &ufs_sysfs_geometry_descriptor_group, 1239 &ufs_sysfs_health_descriptor_group, 1240 &ufs_sysfs_power_descriptor_group, 1241 &ufs_sysfs_string_descriptors_group, 1242 &ufs_sysfs_flags_group, 1243 &ufs_sysfs_attributes_group, 1244 NULL, 1245 }; 1246 1247 #define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size) \ 1248 static ssize_t _pname##_show(struct device *dev, \ 1249 struct device_attribute *attr, char *buf) \ 1250 { \ 1251 struct scsi_device *sdev = to_scsi_device(dev); \ 1252 struct ufs_hba *hba = shost_priv(sdev->host); \ 1253 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); \ 1254 if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun)) \ 1255 return -EINVAL; \ 1256 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ 1257 lun, _duname##_DESC_PARAM##_puname, buf, _size); \ 1258 } \ 1259 static DEVICE_ATTR_RO(_pname) 1260 1261 #define UFS_UNIT_DESC_PARAM(_name, _uname, _size) \ 1262 UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size) 1263 1264 UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1); 1265 UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1); 1266 UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1); 1267 UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1); 1268 UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1); 1269 UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1); 1270 UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1); 1271 UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1); 1272 UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8); 1273 UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4); 1274 UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1); 1275 UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8); 1276 UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2); 1277 UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1); 1278 UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4); 1279 1280 static struct attribute *ufs_sysfs_unit_descriptor[] = { 1281 &dev_attr_lu_enable.attr, 1282 &dev_attr_boot_lun_id.attr, 1283 &dev_attr_lun_write_protect.attr, 1284 &dev_attr_lun_queue_depth.attr, 1285 &dev_attr_psa_sensitive.attr, 1286 &dev_attr_lun_memory_type.attr, 1287 &dev_attr_data_reliability.attr, 1288 &dev_attr_logical_block_size.attr, 1289 &dev_attr_logical_block_count.attr, 1290 &dev_attr_erase_block_size.attr, 1291 &dev_attr_provisioning_type.attr, 1292 &dev_attr_physical_memory_resourse_count.attr, 1293 &dev_attr_context_capabilities.attr, 1294 &dev_attr_large_unit_granularity.attr, 1295 &dev_attr_wb_buf_alloc_units.attr, 1296 NULL, 1297 }; 1298 1299 static umode_t ufs_unit_descriptor_is_visible(struct kobject *kobj, struct attribute *attr, int n) 1300 { 1301 struct device *dev = container_of(kobj, struct device, kobj); 1302 struct scsi_device *sdev = to_scsi_device(dev); 1303 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); 1304 umode_t mode = attr->mode; 1305 1306 if (lun == UFS_UPIU_BOOT_WLUN || lun == UFS_UPIU_UFS_DEVICE_WLUN) 1307 /* Boot and device WLUN have no unit descriptors */ 1308 mode = 0; 1309 if (lun == UFS_UPIU_RPMB_WLUN && attr == &dev_attr_wb_buf_alloc_units.attr) 1310 mode = 0; 1311 1312 return mode; 1313 } 1314 1315 1316 const struct attribute_group ufs_sysfs_unit_descriptor_group = { 1317 .name = "unit_descriptor", 1318 .attrs = ufs_sysfs_unit_descriptor, 1319 .is_visible = ufs_unit_descriptor_is_visible, 1320 }; 1321 1322 static ssize_t dyn_cap_needed_attribute_show(struct device *dev, 1323 struct device_attribute *attr, char *buf) 1324 { 1325 u32 value; 1326 struct scsi_device *sdev = to_scsi_device(dev); 1327 struct ufs_hba *hba = shost_priv(sdev->host); 1328 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); 1329 int ret; 1330 1331 down(&hba->host_sem); 1332 if (!ufshcd_is_user_access_allowed(hba)) { 1333 ret = -EBUSY; 1334 goto out; 1335 } 1336 1337 ufshcd_rpm_get_sync(hba); 1338 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 1339 QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value); 1340 ufshcd_rpm_put_sync(hba); 1341 if (ret) { 1342 ret = -EINVAL; 1343 goto out; 1344 } 1345 1346 ret = sysfs_emit(buf, "0x%08X\n", value); 1347 1348 out: 1349 up(&hba->host_sem); 1350 return ret; 1351 } 1352 static DEVICE_ATTR_RO(dyn_cap_needed_attribute); 1353 1354 static struct attribute *ufs_sysfs_lun_attributes[] = { 1355 &dev_attr_dyn_cap_needed_attribute.attr, 1356 NULL, 1357 }; 1358 1359 const struct attribute_group ufs_sysfs_lun_attributes_group = { 1360 .attrs = ufs_sysfs_lun_attributes, 1361 }; 1362 1363 void ufs_sysfs_add_nodes(struct device *dev) 1364 { 1365 int ret; 1366 1367 ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups); 1368 if (ret) 1369 dev_err(dev, 1370 "%s: sysfs groups creation failed (err = %d)\n", 1371 __func__, ret); 1372 } 1373 1374 void ufs_sysfs_remove_nodes(struct device *dev) 1375 { 1376 sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups); 1377 } 1378