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/unipro.h> 11#include "ufs-sysfs.h" 12#include "ufshcd-priv.h" 13 14static const char *ufs_pa_pwr_mode_to_string(enum ufs_pa_pwr_mode mode) 15{ 16 switch (mode) { 17 case FAST_MODE: return "FAST_MODE"; 18 case SLOW_MODE: return "SLOW_MODE"; 19 case FASTAUTO_MODE: return "FASTAUTO_MODE"; 20 case SLOWAUTO_MODE: return "SLOWAUTO_MODE"; 21 default: return "UNKNOWN"; 22 } 23} 24 25static const char *ufs_hs_gear_rate_to_string(enum ufs_hs_gear_rate rate) 26{ 27 switch (rate) { 28 case PA_HS_MODE_A: return "HS_RATE_A"; 29 case PA_HS_MODE_B: return "HS_RATE_B"; 30 default: return "UNKNOWN"; 31 } 32} 33 34static const char *ufs_pwm_gear_to_string(enum ufs_pwm_gear_tag gear) 35{ 36 switch (gear) { 37 case UFS_PWM_G1: return "PWM_GEAR1"; 38 case UFS_PWM_G2: return "PWM_GEAR2"; 39 case UFS_PWM_G3: return "PWM_GEAR3"; 40 case UFS_PWM_G4: return "PWM_GEAR4"; 41 case UFS_PWM_G5: return "PWM_GEAR5"; 42 case UFS_PWM_G6: return "PWM_GEAR6"; 43 case UFS_PWM_G7: return "PWM_GEAR7"; 44 default: return "UNKNOWN"; 45 } 46} 47 48static const char *ufs_hs_gear_to_string(enum ufs_hs_gear_tag gear) 49{ 50 switch (gear) { 51 case UFS_HS_G1: return "HS_GEAR1"; 52 case UFS_HS_G2: return "HS_GEAR2"; 53 case UFS_HS_G3: return "HS_GEAR3"; 54 case UFS_HS_G4: return "HS_GEAR4"; 55 case UFS_HS_G5: return "HS_GEAR5"; 56 default: return "UNKNOWN"; 57 } 58} 59 60static const char *ufshcd_uic_link_state_to_string( 61 enum uic_link_state state) 62{ 63 switch (state) { 64 case UIC_LINK_OFF_STATE: return "OFF"; 65 case UIC_LINK_ACTIVE_STATE: return "ACTIVE"; 66 case UIC_LINK_HIBERN8_STATE: return "HIBERN8"; 67 case UIC_LINK_BROKEN_STATE: return "BROKEN"; 68 default: return "UNKNOWN"; 69 } 70} 71 72static const char *ufshcd_ufs_dev_pwr_mode_to_string( 73 enum ufs_dev_pwr_mode state) 74{ 75 switch (state) { 76 case UFS_ACTIVE_PWR_MODE: return "ACTIVE"; 77 case UFS_SLEEP_PWR_MODE: return "SLEEP"; 78 case UFS_POWERDOWN_PWR_MODE: return "POWERDOWN"; 79 case UFS_DEEPSLEEP_PWR_MODE: return "DEEPSLEEP"; 80 default: return "UNKNOWN"; 81 } 82} 83 84static inline ssize_t ufs_sysfs_pm_lvl_store(struct device *dev, 85 struct device_attribute *attr, 86 const char *buf, size_t count, 87 bool rpm) 88{ 89 struct ufs_hba *hba = dev_get_drvdata(dev); 90 struct ufs_dev_info *dev_info = &hba->dev_info; 91 unsigned long flags, value; 92 93 if (kstrtoul(buf, 0, &value)) 94 return -EINVAL; 95 96 if (value >= UFS_PM_LVL_MAX) 97 return -EINVAL; 98 99 if (ufs_pm_lvl_states[value].dev_state == UFS_DEEPSLEEP_PWR_MODE && 100 (!(hba->caps & UFSHCD_CAP_DEEPSLEEP) || 101 !(dev_info->wspecversion >= 0x310))) 102 return -EINVAL; 103 104 spin_lock_irqsave(hba->host->host_lock, flags); 105 if (rpm) 106 hba->rpm_lvl = value; 107 else 108 hba->spm_lvl = value; 109 spin_unlock_irqrestore(hba->host->host_lock, flags); 110 return count; 111} 112 113static ssize_t rpm_lvl_show(struct device *dev, 114 struct device_attribute *attr, char *buf) 115{ 116 struct ufs_hba *hba = dev_get_drvdata(dev); 117 118 return sysfs_emit(buf, "%d\n", hba->rpm_lvl); 119} 120 121static ssize_t rpm_lvl_store(struct device *dev, 122 struct device_attribute *attr, const char *buf, size_t count) 123{ 124 return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, true); 125} 126 127static ssize_t rpm_target_dev_state_show(struct device *dev, 128 struct device_attribute *attr, char *buf) 129{ 130 struct ufs_hba *hba = dev_get_drvdata(dev); 131 132 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string( 133 ufs_pm_lvl_states[hba->rpm_lvl].dev_state)); 134} 135 136static ssize_t rpm_target_link_state_show(struct device *dev, 137 struct device_attribute *attr, char *buf) 138{ 139 struct ufs_hba *hba = dev_get_drvdata(dev); 140 141 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string( 142 ufs_pm_lvl_states[hba->rpm_lvl].link_state)); 143} 144 145static ssize_t spm_lvl_show(struct device *dev, 146 struct device_attribute *attr, char *buf) 147{ 148 struct ufs_hba *hba = dev_get_drvdata(dev); 149 150 return sysfs_emit(buf, "%d\n", hba->spm_lvl); 151} 152 153static ssize_t spm_lvl_store(struct device *dev, 154 struct device_attribute *attr, const char *buf, size_t count) 155{ 156 return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, false); 157} 158 159static ssize_t spm_target_dev_state_show(struct device *dev, 160 struct device_attribute *attr, char *buf) 161{ 162 struct ufs_hba *hba = dev_get_drvdata(dev); 163 164 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string( 165 ufs_pm_lvl_states[hba->spm_lvl].dev_state)); 166} 167 168static ssize_t spm_target_link_state_show(struct device *dev, 169 struct device_attribute *attr, char *buf) 170{ 171 struct ufs_hba *hba = dev_get_drvdata(dev); 172 173 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string( 174 ufs_pm_lvl_states[hba->spm_lvl].link_state)); 175} 176 177/* Convert Auto-Hibernate Idle Timer register value to microseconds */ 178static int ufshcd_ahit_to_us(u32 ahit) 179{ 180 int timer = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, ahit); 181 int scale = FIELD_GET(UFSHCI_AHIBERN8_SCALE_MASK, ahit); 182 183 for (; scale > 0; --scale) 184 timer *= UFSHCI_AHIBERN8_SCALE_FACTOR; 185 186 return timer; 187} 188 189/* Convert microseconds to Auto-Hibernate Idle Timer register value */ 190static u32 ufshcd_us_to_ahit(unsigned int timer) 191{ 192 unsigned int scale; 193 194 for (scale = 0; timer > UFSHCI_AHIBERN8_TIMER_MASK; ++scale) 195 timer /= UFSHCI_AHIBERN8_SCALE_FACTOR; 196 197 return FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, timer) | 198 FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, scale); 199} 200 201static ssize_t auto_hibern8_show(struct device *dev, 202 struct device_attribute *attr, char *buf) 203{ 204 u32 ahit; 205 int ret; 206 struct ufs_hba *hba = dev_get_drvdata(dev); 207 208 if (!ufshcd_is_auto_hibern8_supported(hba)) 209 return -EOPNOTSUPP; 210 211 down(&hba->host_sem); 212 if (!ufshcd_is_user_access_allowed(hba)) { 213 ret = -EBUSY; 214 goto out; 215 } 216 217 pm_runtime_get_sync(hba->dev); 218 ufshcd_hold(hba); 219 ahit = ufshcd_readl(hba, REG_AUTO_HIBERNATE_IDLE_TIMER); 220 ufshcd_release(hba); 221 pm_runtime_put_sync(hba->dev); 222 223 ret = sysfs_emit(buf, "%d\n", ufshcd_ahit_to_us(ahit)); 224 225out: 226 up(&hba->host_sem); 227 return ret; 228} 229 230static ssize_t auto_hibern8_store(struct device *dev, 231 struct device_attribute *attr, 232 const char *buf, size_t count) 233{ 234 struct ufs_hba *hba = dev_get_drvdata(dev); 235 unsigned int timer; 236 int ret = 0; 237 238 if (!ufshcd_is_auto_hibern8_supported(hba)) 239 return -EOPNOTSUPP; 240 241 if (kstrtouint(buf, 0, &timer)) 242 return -EINVAL; 243 244 if (timer > UFSHCI_AHIBERN8_MAX) 245 return -EINVAL; 246 247 down(&hba->host_sem); 248 if (!ufshcd_is_user_access_allowed(hba)) { 249 ret = -EBUSY; 250 goto out; 251 } 252 253 ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer)); 254 255out: 256 up(&hba->host_sem); 257 return ret ? ret : count; 258} 259 260static ssize_t wb_on_show(struct device *dev, struct device_attribute *attr, 261 char *buf) 262{ 263 struct ufs_hba *hba = dev_get_drvdata(dev); 264 265 return sysfs_emit(buf, "%d\n", hba->dev_info.wb_enabled); 266} 267 268static ssize_t wb_on_store(struct device *dev, struct device_attribute *attr, 269 const char *buf, size_t count) 270{ 271 struct ufs_hba *hba = dev_get_drvdata(dev); 272 unsigned int wb_enable; 273 ssize_t res; 274 275 if (!ufshcd_is_wb_allowed(hba) || (ufshcd_is_clkscaling_supported(hba) 276 && ufshcd_enable_wb_if_scaling_up(hba))) { 277 /* 278 * If the platform supports UFSHCD_CAP_CLK_SCALING, turn WB 279 * on/off will be done while clock scaling up/down. 280 */ 281 dev_warn(dev, "It is not allowed to configure WB!\n"); 282 return -EOPNOTSUPP; 283 } 284 285 if (kstrtouint(buf, 0, &wb_enable)) 286 return -EINVAL; 287 288 if (wb_enable != 0 && wb_enable != 1) 289 return -EINVAL; 290 291 down(&hba->host_sem); 292 if (!ufshcd_is_user_access_allowed(hba)) { 293 res = -EBUSY; 294 goto out; 295 } 296 297 ufshcd_rpm_get_sync(hba); 298 res = ufshcd_wb_toggle(hba, wb_enable); 299 ufshcd_rpm_put_sync(hba); 300out: 301 up(&hba->host_sem); 302 return res < 0 ? res : count; 303} 304 305static ssize_t rtc_update_ms_show(struct device *dev, struct device_attribute *attr, 306 char *buf) 307{ 308 struct ufs_hba *hba = dev_get_drvdata(dev); 309 310 return sysfs_emit(buf, "%d\n", hba->dev_info.rtc_update_period); 311} 312 313static ssize_t rtc_update_ms_store(struct device *dev, struct device_attribute *attr, 314 const char *buf, size_t count) 315{ 316 struct ufs_hba *hba = dev_get_drvdata(dev); 317 unsigned int ms; 318 bool resume_period_update = false; 319 320 if (kstrtouint(buf, 0, &ms)) 321 return -EINVAL; 322 323 if (!hba->dev_info.rtc_update_period && ms > 0) 324 resume_period_update = true; 325 /* Minimum and maximum update frequency should be synchronized with all UFS vendors */ 326 hba->dev_info.rtc_update_period = ms; 327 328 if (resume_period_update) 329 schedule_delayed_work(&hba->ufs_rtc_update_work, 330 msecs_to_jiffies(hba->dev_info.rtc_update_period)); 331 return count; 332} 333 334static ssize_t enable_wb_buf_flush_show(struct device *dev, 335 struct device_attribute *attr, 336 char *buf) 337{ 338 struct ufs_hba *hba = dev_get_drvdata(dev); 339 340 return sysfs_emit(buf, "%d\n", hba->dev_info.wb_buf_flush_enabled); 341} 342 343static ssize_t enable_wb_buf_flush_store(struct device *dev, 344 struct device_attribute *attr, 345 const char *buf, size_t count) 346{ 347 struct ufs_hba *hba = dev_get_drvdata(dev); 348 unsigned int enable_wb_buf_flush; 349 ssize_t res; 350 351 if (!ufshcd_is_wb_buf_flush_allowed(hba)) { 352 dev_warn(dev, "It is not allowed to configure WB buf flushing!\n"); 353 return -EOPNOTSUPP; 354 } 355 356 if (kstrtouint(buf, 0, &enable_wb_buf_flush)) 357 return -EINVAL; 358 359 if (enable_wb_buf_flush != 0 && enable_wb_buf_flush != 1) 360 return -EINVAL; 361 362 down(&hba->host_sem); 363 if (!ufshcd_is_user_access_allowed(hba)) { 364 res = -EBUSY; 365 goto out; 366 } 367 368 ufshcd_rpm_get_sync(hba); 369 res = ufshcd_wb_toggle_buf_flush(hba, enable_wb_buf_flush); 370 ufshcd_rpm_put_sync(hba); 371 372out: 373 up(&hba->host_sem); 374 return res < 0 ? res : count; 375} 376 377static ssize_t wb_flush_threshold_show(struct device *dev, 378 struct device_attribute *attr, 379 char *buf) 380{ 381 struct ufs_hba *hba = dev_get_drvdata(dev); 382 383 return sysfs_emit(buf, "%u\n", hba->vps->wb_flush_threshold); 384} 385 386static ssize_t wb_flush_threshold_store(struct device *dev, 387 struct device_attribute *attr, 388 const char *buf, size_t count) 389{ 390 struct ufs_hba *hba = dev_get_drvdata(dev); 391 unsigned int wb_flush_threshold; 392 393 if (kstrtouint(buf, 0, &wb_flush_threshold)) 394 return -EINVAL; 395 396 /* The range of values for wb_flush_threshold is (0,10] */ 397 if (wb_flush_threshold > UFS_WB_BUF_REMAIN_PERCENT(100) || 398 wb_flush_threshold == 0) { 399 dev_err(dev, "The value of wb_flush_threshold is invalid!\n"); 400 return -EINVAL; 401 } 402 403 hba->vps->wb_flush_threshold = wb_flush_threshold; 404 405 return count; 406} 407 408/** 409 * pm_qos_enable_show - sysfs handler to show pm qos enable value 410 * @dev: device associated with the UFS controller 411 * @attr: sysfs attribute handle 412 * @buf: buffer for sysfs file 413 * 414 * Print 1 if PM QoS feature is enabled, 0 if disabled. 415 * 416 * Returns number of characters written to @buf. 417 */ 418static ssize_t pm_qos_enable_show(struct device *dev, 419 struct device_attribute *attr, char *buf) 420{ 421 struct ufs_hba *hba = dev_get_drvdata(dev); 422 423 return sysfs_emit(buf, "%d\n", hba->pm_qos_enabled); 424} 425 426/** 427 * pm_qos_enable_store - sysfs handler to store value 428 * @dev: device associated with the UFS controller 429 * @attr: sysfs attribute handle 430 * @buf: buffer for sysfs file 431 * @count: stores buffer characters count 432 * 433 * Input 0 to disable PM QoS and 1 value to enable. 434 * Default state: 1 435 * 436 * Return: number of characters written to @buf on success, < 0 upon failure. 437 */ 438static ssize_t pm_qos_enable_store(struct device *dev, 439 struct device_attribute *attr, const char *buf, size_t count) 440{ 441 struct ufs_hba *hba = dev_get_drvdata(dev); 442 bool value; 443 444 if (kstrtobool(buf, &value)) 445 return -EINVAL; 446 447 if (value) 448 ufshcd_pm_qos_init(hba); 449 else 450 ufshcd_pm_qos_exit(hba); 451 452 return count; 453} 454 455static DEVICE_ATTR_RW(rpm_lvl); 456static DEVICE_ATTR_RO(rpm_target_dev_state); 457static DEVICE_ATTR_RO(rpm_target_link_state); 458static DEVICE_ATTR_RW(spm_lvl); 459static DEVICE_ATTR_RO(spm_target_dev_state); 460static DEVICE_ATTR_RO(spm_target_link_state); 461static DEVICE_ATTR_RW(auto_hibern8); 462static DEVICE_ATTR_RW(wb_on); 463static DEVICE_ATTR_RW(enable_wb_buf_flush); 464static DEVICE_ATTR_RW(wb_flush_threshold); 465static DEVICE_ATTR_RW(rtc_update_ms); 466static DEVICE_ATTR_RW(pm_qos_enable); 467 468static struct attribute *ufs_sysfs_ufshcd_attrs[] = { 469 &dev_attr_rpm_lvl.attr, 470 &dev_attr_rpm_target_dev_state.attr, 471 &dev_attr_rpm_target_link_state.attr, 472 &dev_attr_spm_lvl.attr, 473 &dev_attr_spm_target_dev_state.attr, 474 &dev_attr_spm_target_link_state.attr, 475 &dev_attr_auto_hibern8.attr, 476 &dev_attr_wb_on.attr, 477 &dev_attr_enable_wb_buf_flush.attr, 478 &dev_attr_wb_flush_threshold.attr, 479 &dev_attr_rtc_update_ms.attr, 480 &dev_attr_pm_qos_enable.attr, 481 NULL 482}; 483 484static const struct attribute_group ufs_sysfs_default_group = { 485 .attrs = ufs_sysfs_ufshcd_attrs, 486}; 487 488static ssize_t clock_scaling_show(struct device *dev, struct device_attribute *attr, 489 char *buf) 490{ 491 struct ufs_hba *hba = dev_get_drvdata(dev); 492 493 return sysfs_emit(buf, "%d\n", ufshcd_is_clkscaling_supported(hba)); 494} 495 496static ssize_t write_booster_show(struct device *dev, struct device_attribute *attr, 497 char *buf) 498{ 499 struct ufs_hba *hba = dev_get_drvdata(dev); 500 501 return sysfs_emit(buf, "%d\n", ufshcd_is_wb_allowed(hba)); 502} 503 504static DEVICE_ATTR_RO(clock_scaling); 505static DEVICE_ATTR_RO(write_booster); 506 507/* 508 * See Documentation/ABI/testing/sysfs-driver-ufs for the semantics of this 509 * group. 510 */ 511static struct attribute *ufs_sysfs_capabilities_attrs[] = { 512 &dev_attr_clock_scaling.attr, 513 &dev_attr_write_booster.attr, 514 NULL 515}; 516 517static const struct attribute_group ufs_sysfs_capabilities_group = { 518 .name = "capabilities", 519 .attrs = ufs_sysfs_capabilities_attrs, 520}; 521 522static ssize_t monitor_enable_show(struct device *dev, 523 struct device_attribute *attr, char *buf) 524{ 525 struct ufs_hba *hba = dev_get_drvdata(dev); 526 527 return sysfs_emit(buf, "%d\n", hba->monitor.enabled); 528} 529 530static ssize_t monitor_enable_store(struct device *dev, 531 struct device_attribute *attr, 532 const char *buf, size_t count) 533{ 534 struct ufs_hba *hba = dev_get_drvdata(dev); 535 unsigned long value, flags; 536 537 if (kstrtoul(buf, 0, &value)) 538 return -EINVAL; 539 540 value = !!value; 541 spin_lock_irqsave(hba->host->host_lock, flags); 542 if (value == hba->monitor.enabled) 543 goto out_unlock; 544 545 if (!value) { 546 memset(&hba->monitor, 0, sizeof(hba->monitor)); 547 } else { 548 hba->monitor.enabled = true; 549 hba->monitor.enabled_ts = ktime_get(); 550 } 551 552out_unlock: 553 spin_unlock_irqrestore(hba->host->host_lock, flags); 554 return count; 555} 556 557static ssize_t monitor_chunk_size_show(struct device *dev, 558 struct device_attribute *attr, char *buf) 559{ 560 struct ufs_hba *hba = dev_get_drvdata(dev); 561 562 return sysfs_emit(buf, "%lu\n", hba->monitor.chunk_size); 563} 564 565static ssize_t monitor_chunk_size_store(struct device *dev, 566 struct device_attribute *attr, 567 const char *buf, size_t count) 568{ 569 struct ufs_hba *hba = dev_get_drvdata(dev); 570 unsigned long value, flags; 571 572 if (kstrtoul(buf, 0, &value)) 573 return -EINVAL; 574 575 spin_lock_irqsave(hba->host->host_lock, flags); 576 /* Only allow chunk size change when monitor is disabled */ 577 if (!hba->monitor.enabled) 578 hba->monitor.chunk_size = value; 579 spin_unlock_irqrestore(hba->host->host_lock, flags); 580 return count; 581} 582 583static ssize_t read_total_sectors_show(struct device *dev, 584 struct device_attribute *attr, char *buf) 585{ 586 struct ufs_hba *hba = dev_get_drvdata(dev); 587 588 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[READ]); 589} 590 591static ssize_t read_total_busy_show(struct device *dev, 592 struct device_attribute *attr, char *buf) 593{ 594 struct ufs_hba *hba = dev_get_drvdata(dev); 595 596 return sysfs_emit(buf, "%llu\n", 597 ktime_to_us(hba->monitor.total_busy[READ])); 598} 599 600static ssize_t read_nr_requests_show(struct device *dev, 601 struct device_attribute *attr, char *buf) 602{ 603 struct ufs_hba *hba = dev_get_drvdata(dev); 604 605 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[READ]); 606} 607 608static ssize_t read_req_latency_avg_show(struct device *dev, 609 struct device_attribute *attr, 610 char *buf) 611{ 612 struct ufs_hba *hba = dev_get_drvdata(dev); 613 struct ufs_hba_monitor *m = &hba->monitor; 614 615 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[READ]), 616 m->nr_req[READ])); 617} 618 619static ssize_t read_req_latency_max_show(struct device *dev, 620 struct device_attribute *attr, 621 char *buf) 622{ 623 struct ufs_hba *hba = dev_get_drvdata(dev); 624 625 return sysfs_emit(buf, "%llu\n", 626 ktime_to_us(hba->monitor.lat_max[READ])); 627} 628 629static ssize_t read_req_latency_min_show(struct device *dev, 630 struct device_attribute *attr, 631 char *buf) 632{ 633 struct ufs_hba *hba = dev_get_drvdata(dev); 634 635 return sysfs_emit(buf, "%llu\n", 636 ktime_to_us(hba->monitor.lat_min[READ])); 637} 638 639static ssize_t read_req_latency_sum_show(struct device *dev, 640 struct device_attribute *attr, 641 char *buf) 642{ 643 struct ufs_hba *hba = dev_get_drvdata(dev); 644 645 return sysfs_emit(buf, "%llu\n", 646 ktime_to_us(hba->monitor.lat_sum[READ])); 647} 648 649static ssize_t write_total_sectors_show(struct device *dev, 650 struct device_attribute *attr, 651 char *buf) 652{ 653 struct ufs_hba *hba = dev_get_drvdata(dev); 654 655 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[WRITE]); 656} 657 658static ssize_t write_total_busy_show(struct device *dev, 659 struct device_attribute *attr, char *buf) 660{ 661 struct ufs_hba *hba = dev_get_drvdata(dev); 662 663 return sysfs_emit(buf, "%llu\n", 664 ktime_to_us(hba->monitor.total_busy[WRITE])); 665} 666 667static ssize_t write_nr_requests_show(struct device *dev, 668 struct device_attribute *attr, char *buf) 669{ 670 struct ufs_hba *hba = dev_get_drvdata(dev); 671 672 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[WRITE]); 673} 674 675static ssize_t write_req_latency_avg_show(struct device *dev, 676 struct device_attribute *attr, 677 char *buf) 678{ 679 struct ufs_hba *hba = dev_get_drvdata(dev); 680 struct ufs_hba_monitor *m = &hba->monitor; 681 682 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[WRITE]), 683 m->nr_req[WRITE])); 684} 685 686static ssize_t write_req_latency_max_show(struct device *dev, 687 struct device_attribute *attr, 688 char *buf) 689{ 690 struct ufs_hba *hba = dev_get_drvdata(dev); 691 692 return sysfs_emit(buf, "%llu\n", 693 ktime_to_us(hba->monitor.lat_max[WRITE])); 694} 695 696static ssize_t write_req_latency_min_show(struct device *dev, 697 struct device_attribute *attr, 698 char *buf) 699{ 700 struct ufs_hba *hba = dev_get_drvdata(dev); 701 702 return sysfs_emit(buf, "%llu\n", 703 ktime_to_us(hba->monitor.lat_min[WRITE])); 704} 705 706static ssize_t write_req_latency_sum_show(struct device *dev, 707 struct device_attribute *attr, 708 char *buf) 709{ 710 struct ufs_hba *hba = dev_get_drvdata(dev); 711 712 return sysfs_emit(buf, "%llu\n", 713 ktime_to_us(hba->monitor.lat_sum[WRITE])); 714} 715 716static DEVICE_ATTR_RW(monitor_enable); 717static DEVICE_ATTR_RW(monitor_chunk_size); 718static DEVICE_ATTR_RO(read_total_sectors); 719static DEVICE_ATTR_RO(read_total_busy); 720static DEVICE_ATTR_RO(read_nr_requests); 721static DEVICE_ATTR_RO(read_req_latency_avg); 722static DEVICE_ATTR_RO(read_req_latency_max); 723static DEVICE_ATTR_RO(read_req_latency_min); 724static DEVICE_ATTR_RO(read_req_latency_sum); 725static DEVICE_ATTR_RO(write_total_sectors); 726static DEVICE_ATTR_RO(write_total_busy); 727static DEVICE_ATTR_RO(write_nr_requests); 728static DEVICE_ATTR_RO(write_req_latency_avg); 729static DEVICE_ATTR_RO(write_req_latency_max); 730static DEVICE_ATTR_RO(write_req_latency_min); 731static DEVICE_ATTR_RO(write_req_latency_sum); 732 733static struct attribute *ufs_sysfs_monitor_attrs[] = { 734 &dev_attr_monitor_enable.attr, 735 &dev_attr_monitor_chunk_size.attr, 736 &dev_attr_read_total_sectors.attr, 737 &dev_attr_read_total_busy.attr, 738 &dev_attr_read_nr_requests.attr, 739 &dev_attr_read_req_latency_avg.attr, 740 &dev_attr_read_req_latency_max.attr, 741 &dev_attr_read_req_latency_min.attr, 742 &dev_attr_read_req_latency_sum.attr, 743 &dev_attr_write_total_sectors.attr, 744 &dev_attr_write_total_busy.attr, 745 &dev_attr_write_nr_requests.attr, 746 &dev_attr_write_req_latency_avg.attr, 747 &dev_attr_write_req_latency_max.attr, 748 &dev_attr_write_req_latency_min.attr, 749 &dev_attr_write_req_latency_sum.attr, 750 NULL 751}; 752 753static const struct attribute_group ufs_sysfs_monitor_group = { 754 .name = "monitor", 755 .attrs = ufs_sysfs_monitor_attrs, 756}; 757 758static ssize_t lane_show(struct device *dev, struct device_attribute *attr, 759 char *buf) 760{ 761 struct ufs_hba *hba = dev_get_drvdata(dev); 762 763 return sysfs_emit(buf, "%u\n", hba->pwr_info.lane_rx); 764} 765 766static ssize_t mode_show(struct device *dev, struct device_attribute *attr, 767 char *buf) 768{ 769 struct ufs_hba *hba = dev_get_drvdata(dev); 770 771 return sysfs_emit(buf, "%s\n", ufs_pa_pwr_mode_to_string(hba->pwr_info.pwr_rx)); 772} 773 774static ssize_t rate_show(struct device *dev, struct device_attribute *attr, 775 char *buf) 776{ 777 struct ufs_hba *hba = dev_get_drvdata(dev); 778 779 return sysfs_emit(buf, "%s\n", ufs_hs_gear_rate_to_string(hba->pwr_info.hs_rate)); 780} 781 782static ssize_t gear_show(struct device *dev, struct device_attribute *attr, 783 char *buf) 784{ 785 struct ufs_hba *hba = dev_get_drvdata(dev); 786 787 return sysfs_emit(buf, "%s\n", hba->pwr_info.hs_rate ? 788 ufs_hs_gear_to_string(hba->pwr_info.gear_rx) : 789 ufs_pwm_gear_to_string(hba->pwr_info.gear_rx)); 790} 791 792static ssize_t dev_pm_show(struct device *dev, struct device_attribute *attr, 793 char *buf) 794{ 795 struct ufs_hba *hba = dev_get_drvdata(dev); 796 797 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(hba->curr_dev_pwr_mode)); 798} 799 800static ssize_t link_state_show(struct device *dev, 801 struct device_attribute *attr, char *buf) 802{ 803 struct ufs_hba *hba = dev_get_drvdata(dev); 804 805 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(hba->uic_link_state)); 806} 807 808static DEVICE_ATTR_RO(lane); 809static DEVICE_ATTR_RO(mode); 810static DEVICE_ATTR_RO(rate); 811static DEVICE_ATTR_RO(gear); 812static DEVICE_ATTR_RO(dev_pm); 813static DEVICE_ATTR_RO(link_state); 814 815static struct attribute *ufs_power_info_attrs[] = { 816 &dev_attr_lane.attr, 817 &dev_attr_mode.attr, 818 &dev_attr_rate.attr, 819 &dev_attr_gear.attr, 820 &dev_attr_dev_pm.attr, 821 &dev_attr_link_state.attr, 822 NULL 823}; 824 825static const struct attribute_group ufs_sysfs_power_info_group = { 826 .name = "power_info", 827 .attrs = ufs_power_info_attrs, 828}; 829 830static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba, 831 enum desc_idn desc_id, 832 u8 desc_index, 833 u8 param_offset, 834 u8 *sysfs_buf, 835 u8 param_size) 836{ 837 u8 desc_buf[8] = {0}; 838 int ret; 839 840 if (param_size > 8) 841 return -EINVAL; 842 843 down(&hba->host_sem); 844 if (!ufshcd_is_user_access_allowed(hba)) { 845 ret = -EBUSY; 846 goto out; 847 } 848 849 ufshcd_rpm_get_sync(hba); 850 ret = ufshcd_read_desc_param(hba, desc_id, desc_index, 851 param_offset, desc_buf, param_size); 852 ufshcd_rpm_put_sync(hba); 853 if (ret) { 854 ret = -EINVAL; 855 goto out; 856 } 857 858 switch (param_size) { 859 case 1: 860 ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf); 861 break; 862 case 2: 863 ret = sysfs_emit(sysfs_buf, "0x%04X\n", 864 get_unaligned_be16(desc_buf)); 865 break; 866 case 4: 867 ret = sysfs_emit(sysfs_buf, "0x%08X\n", 868 get_unaligned_be32(desc_buf)); 869 break; 870 case 8: 871 ret = sysfs_emit(sysfs_buf, "0x%016llX\n", 872 get_unaligned_be64(desc_buf)); 873 break; 874 } 875 876out: 877 up(&hba->host_sem); 878 return ret; 879} 880 881#define UFS_DESC_PARAM(_name, _puname, _duname, _size) \ 882static ssize_t _name##_show(struct device *dev, \ 883 struct device_attribute *attr, char *buf) \ 884{ \ 885 struct ufs_hba *hba = dev_get_drvdata(dev); \ 886 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ 887 0, _duname##_DESC_PARAM##_puname, buf, _size); \ 888} \ 889static DEVICE_ATTR_RO(_name) 890 891#define UFS_DEVICE_DESC_PARAM(_name, _uname, _size) \ 892 UFS_DESC_PARAM(_name, _uname, DEVICE, _size) 893 894UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1); 895UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1); 896UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1); 897UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1); 898UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1); 899UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1); 900UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1); 901UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1); 902UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1); 903UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1); 904UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1); 905UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1); 906UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1); 907UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1); 908UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2); 909UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2); 910UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2); 911UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1); 912UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2); 913UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1); 914UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1); 915UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1); 916UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2); 917UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1); 918UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4); 919UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1); 920UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4); 921UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1); 922UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1); 923UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4); 924 925static struct attribute *ufs_sysfs_device_descriptor[] = { 926 &dev_attr_device_type.attr, 927 &dev_attr_device_class.attr, 928 &dev_attr_device_sub_class.attr, 929 &dev_attr_protocol.attr, 930 &dev_attr_number_of_luns.attr, 931 &dev_attr_number_of_wluns.attr, 932 &dev_attr_boot_enable.attr, 933 &dev_attr_descriptor_access_enable.attr, 934 &dev_attr_initial_power_mode.attr, 935 &dev_attr_high_priority_lun.attr, 936 &dev_attr_secure_removal_type.attr, 937 &dev_attr_support_security_lun.attr, 938 &dev_attr_bkops_termination_latency.attr, 939 &dev_attr_initial_active_icc_level.attr, 940 &dev_attr_specification_version.attr, 941 &dev_attr_manufacturing_date.attr, 942 &dev_attr_manufacturer_id.attr, 943 &dev_attr_rtt_capability.attr, 944 &dev_attr_rtc_update.attr, 945 &dev_attr_ufs_features.attr, 946 &dev_attr_ffu_timeout.attr, 947 &dev_attr_queue_depth.attr, 948 &dev_attr_device_version.attr, 949 &dev_attr_number_of_secure_wpa.attr, 950 &dev_attr_psa_max_data_size.attr, 951 &dev_attr_psa_state_timeout.attr, 952 &dev_attr_ext_feature_sup.attr, 953 &dev_attr_wb_presv_us_en.attr, 954 &dev_attr_wb_type.attr, 955 &dev_attr_wb_shared_alloc_units.attr, 956 NULL, 957}; 958 959static const struct attribute_group ufs_sysfs_device_descriptor_group = { 960 .name = "device_descriptor", 961 .attrs = ufs_sysfs_device_descriptor, 962}; 963 964#define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size) \ 965 UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size) 966 967UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2); 968UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2); 969 970static struct attribute *ufs_sysfs_interconnect_descriptor[] = { 971 &dev_attr_unipro_version.attr, 972 &dev_attr_mphy_version.attr, 973 NULL, 974}; 975 976static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = { 977 .name = "interconnect_descriptor", 978 .attrs = ufs_sysfs_interconnect_descriptor, 979}; 980 981#define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size) \ 982 UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size) 983 984UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8); 985UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1); 986UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4); 987UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1); 988UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1); 989UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1); 990UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1); 991UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1); 992UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1); 993UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1); 994UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1); 995UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1); 996UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1); 997UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1); 998UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1); 999UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1); 1000UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2); 1001UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units, 1002 _SCM_MAX_NUM_UNITS, 4); 1003UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor, 1004 _SCM_CAP_ADJ_FCTR, 2); 1005UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units, 1006 _NPM_MAX_NUM_UNITS, 4); 1007UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor, 1008 _NPM_CAP_ADJ_FCTR, 2); 1009UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units, 1010 _ENM1_MAX_NUM_UNITS, 4); 1011UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor, 1012 _ENM1_CAP_ADJ_FCTR, 2); 1013UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units, 1014 _ENM2_MAX_NUM_UNITS, 4); 1015UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor, 1016 _ENM2_CAP_ADJ_FCTR, 2); 1017UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units, 1018 _ENM3_MAX_NUM_UNITS, 4); 1019UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor, 1020 _ENM3_CAP_ADJ_FCTR, 2); 1021UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units, 1022 _ENM4_MAX_NUM_UNITS, 4); 1023UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor, 1024 _ENM4_CAP_ADJ_FCTR, 2); 1025UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4); 1026UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1); 1027UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1); 1028UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1); 1029UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1); 1030 1031 1032static struct attribute *ufs_sysfs_geometry_descriptor[] = { 1033 &dev_attr_raw_device_capacity.attr, 1034 &dev_attr_max_number_of_luns.attr, 1035 &dev_attr_segment_size.attr, 1036 &dev_attr_allocation_unit_size.attr, 1037 &dev_attr_min_addressable_block_size.attr, 1038 &dev_attr_optimal_read_block_size.attr, 1039 &dev_attr_optimal_write_block_size.attr, 1040 &dev_attr_max_in_buffer_size.attr, 1041 &dev_attr_max_out_buffer_size.attr, 1042 &dev_attr_rpmb_rw_size.attr, 1043 &dev_attr_dyn_capacity_resource_policy.attr, 1044 &dev_attr_data_ordering.attr, 1045 &dev_attr_max_number_of_contexts.attr, 1046 &dev_attr_sys_data_tag_unit_size.attr, 1047 &dev_attr_sys_data_tag_resource_size.attr, 1048 &dev_attr_secure_removal_types.attr, 1049 &dev_attr_memory_types.attr, 1050 &dev_attr_sys_code_memory_max_alloc_units.attr, 1051 &dev_attr_sys_code_memory_capacity_adjustment_factor.attr, 1052 &dev_attr_non_persist_memory_max_alloc_units.attr, 1053 &dev_attr_non_persist_memory_capacity_adjustment_factor.attr, 1054 &dev_attr_enh1_memory_max_alloc_units.attr, 1055 &dev_attr_enh1_memory_capacity_adjustment_factor.attr, 1056 &dev_attr_enh2_memory_max_alloc_units.attr, 1057 &dev_attr_enh2_memory_capacity_adjustment_factor.attr, 1058 &dev_attr_enh3_memory_max_alloc_units.attr, 1059 &dev_attr_enh3_memory_capacity_adjustment_factor.attr, 1060 &dev_attr_enh4_memory_max_alloc_units.attr, 1061 &dev_attr_enh4_memory_capacity_adjustment_factor.attr, 1062 &dev_attr_wb_max_alloc_units.attr, 1063 &dev_attr_wb_max_wb_luns.attr, 1064 &dev_attr_wb_buff_cap_adj.attr, 1065 &dev_attr_wb_sup_red_type.attr, 1066 &dev_attr_wb_sup_wb_type.attr, 1067 NULL, 1068}; 1069 1070static const struct attribute_group ufs_sysfs_geometry_descriptor_group = { 1071 .name = "geometry_descriptor", 1072 .attrs = ufs_sysfs_geometry_descriptor, 1073}; 1074 1075#define UFS_HEALTH_DESC_PARAM(_name, _uname, _size) \ 1076 UFS_DESC_PARAM(_name, _uname, HEALTH, _size) 1077 1078UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1); 1079UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1); 1080UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1); 1081 1082static struct attribute *ufs_sysfs_health_descriptor[] = { 1083 &dev_attr_eol_info.attr, 1084 &dev_attr_life_time_estimation_a.attr, 1085 &dev_attr_life_time_estimation_b.attr, 1086 NULL, 1087}; 1088 1089static const struct attribute_group ufs_sysfs_health_descriptor_group = { 1090 .name = "health_descriptor", 1091 .attrs = ufs_sysfs_health_descriptor, 1092}; 1093 1094#define UFS_POWER_DESC_PARAM(_name, _uname, _index) \ 1095static ssize_t _name##_index##_show(struct device *dev, \ 1096 struct device_attribute *attr, char *buf) \ 1097{ \ 1098 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1099 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, \ 1100 PWR_DESC##_uname##_0 + _index * 2, buf, 2); \ 1101} \ 1102static DEVICE_ATTR_RO(_name##_index) 1103 1104UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0); 1105UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1); 1106UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2); 1107UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3); 1108UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4); 1109UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5); 1110UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6); 1111UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7); 1112UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8); 1113UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9); 1114UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10); 1115UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11); 1116UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12); 1117UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13); 1118UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14); 1119UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15); 1120UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0); 1121UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1); 1122UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2); 1123UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3); 1124UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4); 1125UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5); 1126UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6); 1127UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7); 1128UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8); 1129UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9); 1130UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10); 1131UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11); 1132UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12); 1133UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13); 1134UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14); 1135UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15); 1136UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0); 1137UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1); 1138UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2); 1139UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3); 1140UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4); 1141UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5); 1142UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6); 1143UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7); 1144UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8); 1145UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9); 1146UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10); 1147UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11); 1148UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12); 1149UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13); 1150UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14); 1151UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15); 1152 1153static struct attribute *ufs_sysfs_power_descriptor[] = { 1154 &dev_attr_active_icc_levels_vcc0.attr, 1155 &dev_attr_active_icc_levels_vcc1.attr, 1156 &dev_attr_active_icc_levels_vcc2.attr, 1157 &dev_attr_active_icc_levels_vcc3.attr, 1158 &dev_attr_active_icc_levels_vcc4.attr, 1159 &dev_attr_active_icc_levels_vcc5.attr, 1160 &dev_attr_active_icc_levels_vcc6.attr, 1161 &dev_attr_active_icc_levels_vcc7.attr, 1162 &dev_attr_active_icc_levels_vcc8.attr, 1163 &dev_attr_active_icc_levels_vcc9.attr, 1164 &dev_attr_active_icc_levels_vcc10.attr, 1165 &dev_attr_active_icc_levels_vcc11.attr, 1166 &dev_attr_active_icc_levels_vcc12.attr, 1167 &dev_attr_active_icc_levels_vcc13.attr, 1168 &dev_attr_active_icc_levels_vcc14.attr, 1169 &dev_attr_active_icc_levels_vcc15.attr, 1170 &dev_attr_active_icc_levels_vccq0.attr, 1171 &dev_attr_active_icc_levels_vccq1.attr, 1172 &dev_attr_active_icc_levels_vccq2.attr, 1173 &dev_attr_active_icc_levels_vccq3.attr, 1174 &dev_attr_active_icc_levels_vccq4.attr, 1175 &dev_attr_active_icc_levels_vccq5.attr, 1176 &dev_attr_active_icc_levels_vccq6.attr, 1177 &dev_attr_active_icc_levels_vccq7.attr, 1178 &dev_attr_active_icc_levels_vccq8.attr, 1179 &dev_attr_active_icc_levels_vccq9.attr, 1180 &dev_attr_active_icc_levels_vccq10.attr, 1181 &dev_attr_active_icc_levels_vccq11.attr, 1182 &dev_attr_active_icc_levels_vccq12.attr, 1183 &dev_attr_active_icc_levels_vccq13.attr, 1184 &dev_attr_active_icc_levels_vccq14.attr, 1185 &dev_attr_active_icc_levels_vccq15.attr, 1186 &dev_attr_active_icc_levels_vccq20.attr, 1187 &dev_attr_active_icc_levels_vccq21.attr, 1188 &dev_attr_active_icc_levels_vccq22.attr, 1189 &dev_attr_active_icc_levels_vccq23.attr, 1190 &dev_attr_active_icc_levels_vccq24.attr, 1191 &dev_attr_active_icc_levels_vccq25.attr, 1192 &dev_attr_active_icc_levels_vccq26.attr, 1193 &dev_attr_active_icc_levels_vccq27.attr, 1194 &dev_attr_active_icc_levels_vccq28.attr, 1195 &dev_attr_active_icc_levels_vccq29.attr, 1196 &dev_attr_active_icc_levels_vccq210.attr, 1197 &dev_attr_active_icc_levels_vccq211.attr, 1198 &dev_attr_active_icc_levels_vccq212.attr, 1199 &dev_attr_active_icc_levels_vccq213.attr, 1200 &dev_attr_active_icc_levels_vccq214.attr, 1201 &dev_attr_active_icc_levels_vccq215.attr, 1202 NULL, 1203}; 1204 1205static const struct attribute_group ufs_sysfs_power_descriptor_group = { 1206 .name = "power_descriptor", 1207 .attrs = ufs_sysfs_power_descriptor, 1208}; 1209 1210#define UFS_STRING_DESCRIPTOR(_name, _pname) \ 1211static ssize_t _name##_show(struct device *dev, \ 1212 struct device_attribute *attr, char *buf) \ 1213{ \ 1214 u8 index; \ 1215 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1216 int ret; \ 1217 int desc_len = QUERY_DESC_MAX_SIZE; \ 1218 u8 *desc_buf; \ 1219 \ 1220 down(&hba->host_sem); \ 1221 if (!ufshcd_is_user_access_allowed(hba)) { \ 1222 up(&hba->host_sem); \ 1223 return -EBUSY; \ 1224 } \ 1225 desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC); \ 1226 if (!desc_buf) { \ 1227 up(&hba->host_sem); \ 1228 return -ENOMEM; \ 1229 } \ 1230 ufshcd_rpm_get_sync(hba); \ 1231 ret = ufshcd_query_descriptor_retry(hba, \ 1232 UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE, \ 1233 0, 0, desc_buf, &desc_len); \ 1234 if (ret) { \ 1235 ret = -EINVAL; \ 1236 goto out; \ 1237 } \ 1238 index = desc_buf[DEVICE_DESC_PARAM##_pname]; \ 1239 kfree(desc_buf); \ 1240 desc_buf = NULL; \ 1241 ret = ufshcd_read_string_desc(hba, index, &desc_buf, \ 1242 SD_ASCII_STD); \ 1243 if (ret < 0) \ 1244 goto out; \ 1245 ret = sysfs_emit(buf, "%s\n", desc_buf); \ 1246out: \ 1247 ufshcd_rpm_put_sync(hba); \ 1248 kfree(desc_buf); \ 1249 up(&hba->host_sem); \ 1250 return ret; \ 1251} \ 1252static DEVICE_ATTR_RO(_name) 1253 1254UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME); 1255UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME); 1256UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID); 1257UFS_STRING_DESCRIPTOR(serial_number, _SN); 1258UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV); 1259 1260static struct attribute *ufs_sysfs_string_descriptors[] = { 1261 &dev_attr_manufacturer_name.attr, 1262 &dev_attr_product_name.attr, 1263 &dev_attr_oem_id.attr, 1264 &dev_attr_serial_number.attr, 1265 &dev_attr_product_revision.attr, 1266 NULL, 1267}; 1268 1269static const struct attribute_group ufs_sysfs_string_descriptors_group = { 1270 .name = "string_descriptors", 1271 .attrs = ufs_sysfs_string_descriptors, 1272}; 1273 1274static inline bool ufshcd_is_wb_flags(enum flag_idn idn) 1275{ 1276 return idn >= QUERY_FLAG_IDN_WB_EN && 1277 idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8; 1278} 1279 1280#define UFS_FLAG(_name, _uname) \ 1281static ssize_t _name##_show(struct device *dev, \ 1282 struct device_attribute *attr, char *buf) \ 1283{ \ 1284 bool flag; \ 1285 u8 index = 0; \ 1286 int ret; \ 1287 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1288 \ 1289 down(&hba->host_sem); \ 1290 if (!ufshcd_is_user_access_allowed(hba)) { \ 1291 up(&hba->host_sem); \ 1292 return -EBUSY; \ 1293 } \ 1294 if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname)) \ 1295 index = ufshcd_wb_get_query_index(hba); \ 1296 ufshcd_rpm_get_sync(hba); \ 1297 ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \ 1298 QUERY_FLAG_IDN##_uname, index, &flag); \ 1299 ufshcd_rpm_put_sync(hba); \ 1300 if (ret) { \ 1301 ret = -EINVAL; \ 1302 goto out; \ 1303 } \ 1304 ret = sysfs_emit(buf, "%s\n", flag ? "true" : "false"); \ 1305out: \ 1306 up(&hba->host_sem); \ 1307 return ret; \ 1308} \ 1309static DEVICE_ATTR_RO(_name) 1310 1311UFS_FLAG(device_init, _FDEVICEINIT); 1312UFS_FLAG(permanent_wpe, _PERMANENT_WPE); 1313UFS_FLAG(power_on_wpe, _PWR_ON_WPE); 1314UFS_FLAG(bkops_enable, _BKOPS_EN); 1315UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE); 1316UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL); 1317UFS_FLAG(busy_rtc, _BUSY_RTC); 1318UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE); 1319UFS_FLAG(wb_enable, _WB_EN); 1320UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN); 1321UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8); 1322 1323static struct attribute *ufs_sysfs_device_flags[] = { 1324 &dev_attr_device_init.attr, 1325 &dev_attr_permanent_wpe.attr, 1326 &dev_attr_power_on_wpe.attr, 1327 &dev_attr_bkops_enable.attr, 1328 &dev_attr_life_span_mode_enable.attr, 1329 &dev_attr_phy_resource_removal.attr, 1330 &dev_attr_busy_rtc.attr, 1331 &dev_attr_disable_fw_update.attr, 1332 &dev_attr_wb_enable.attr, 1333 &dev_attr_wb_flush_en.attr, 1334 &dev_attr_wb_flush_during_h8.attr, 1335 NULL, 1336}; 1337 1338static const struct attribute_group ufs_sysfs_flags_group = { 1339 .name = "flags", 1340 .attrs = ufs_sysfs_device_flags, 1341}; 1342 1343static inline bool ufshcd_is_wb_attrs(enum attr_idn idn) 1344{ 1345 return idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS && 1346 idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE; 1347} 1348 1349#define UFS_ATTRIBUTE(_name, _uname) \ 1350static ssize_t _name##_show(struct device *dev, \ 1351 struct device_attribute *attr, char *buf) \ 1352{ \ 1353 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1354 u32 value; \ 1355 int ret; \ 1356 u8 index = 0; \ 1357 \ 1358 down(&hba->host_sem); \ 1359 if (!ufshcd_is_user_access_allowed(hba)) { \ 1360 up(&hba->host_sem); \ 1361 return -EBUSY; \ 1362 } \ 1363 if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname)) \ 1364 index = ufshcd_wb_get_query_index(hba); \ 1365 ufshcd_rpm_get_sync(hba); \ 1366 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, \ 1367 QUERY_ATTR_IDN##_uname, index, 0, &value); \ 1368 ufshcd_rpm_put_sync(hba); \ 1369 if (ret) { \ 1370 ret = -EINVAL; \ 1371 goto out; \ 1372 } \ 1373 ret = sysfs_emit(buf, "0x%08X\n", value); \ 1374out: \ 1375 up(&hba->host_sem); \ 1376 return ret; \ 1377} \ 1378static DEVICE_ATTR_RO(_name) 1379 1380UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN); 1381UFS_ATTRIBUTE(current_power_mode, _POWER_MODE); 1382UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL); 1383UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN); 1384UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS); 1385UFS_ATTRIBUTE(purge_status, _PURGE_STATUS); 1386UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN); 1387UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT); 1388UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ); 1389UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK); 1390UFS_ATTRIBUTE(max_number_of_rtt, _MAX_NUM_OF_RTT); 1391UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL); 1392UFS_ATTRIBUTE(exception_event_status, _EE_STATUS); 1393UFS_ATTRIBUTE(ffu_status, _FFU_STATUS); 1394UFS_ATTRIBUTE(psa_state, _PSA_STATE); 1395UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE); 1396UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS); 1397UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE); 1398UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST); 1399UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE); 1400 1401 1402static struct attribute *ufs_sysfs_attributes[] = { 1403 &dev_attr_boot_lun_enabled.attr, 1404 &dev_attr_current_power_mode.attr, 1405 &dev_attr_active_icc_level.attr, 1406 &dev_attr_ooo_data_enabled.attr, 1407 &dev_attr_bkops_status.attr, 1408 &dev_attr_purge_status.attr, 1409 &dev_attr_max_data_in_size.attr, 1410 &dev_attr_max_data_out_size.attr, 1411 &dev_attr_reference_clock_frequency.attr, 1412 &dev_attr_configuration_descriptor_lock.attr, 1413 &dev_attr_max_number_of_rtt.attr, 1414 &dev_attr_exception_event_control.attr, 1415 &dev_attr_exception_event_status.attr, 1416 &dev_attr_ffu_status.attr, 1417 &dev_attr_psa_state.attr, 1418 &dev_attr_psa_data_size.attr, 1419 &dev_attr_wb_flush_status.attr, 1420 &dev_attr_wb_avail_buf.attr, 1421 &dev_attr_wb_life_time_est.attr, 1422 &dev_attr_wb_cur_buf.attr, 1423 NULL, 1424}; 1425 1426static const struct attribute_group ufs_sysfs_attributes_group = { 1427 .name = "attributes", 1428 .attrs = ufs_sysfs_attributes, 1429}; 1430 1431static const struct attribute_group *ufs_sysfs_groups[] = { 1432 &ufs_sysfs_default_group, 1433 &ufs_sysfs_capabilities_group, 1434 &ufs_sysfs_monitor_group, 1435 &ufs_sysfs_power_info_group, 1436 &ufs_sysfs_device_descriptor_group, 1437 &ufs_sysfs_interconnect_descriptor_group, 1438 &ufs_sysfs_geometry_descriptor_group, 1439 &ufs_sysfs_health_descriptor_group, 1440 &ufs_sysfs_power_descriptor_group, 1441 &ufs_sysfs_string_descriptors_group, 1442 &ufs_sysfs_flags_group, 1443 &ufs_sysfs_attributes_group, 1444 NULL, 1445}; 1446 1447#define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size) \ 1448static ssize_t _pname##_show(struct device *dev, \ 1449 struct device_attribute *attr, char *buf) \ 1450{ \ 1451 struct scsi_device *sdev = to_scsi_device(dev); \ 1452 struct ufs_hba *hba = shost_priv(sdev->host); \ 1453 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); \ 1454 if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun)) \ 1455 return -EINVAL; \ 1456 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ 1457 lun, _duname##_DESC_PARAM##_puname, buf, _size); \ 1458} \ 1459static DEVICE_ATTR_RO(_pname) 1460 1461#define UFS_UNIT_DESC_PARAM(_name, _uname, _size) \ 1462 UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size) 1463 1464UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1); 1465UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1); 1466UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1); 1467UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1); 1468UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1); 1469UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1); 1470UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1); 1471UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1); 1472UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8); 1473UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4); 1474UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1); 1475UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8); 1476UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2); 1477UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1); 1478UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4); 1479 1480static struct attribute *ufs_sysfs_unit_descriptor[] = { 1481 &dev_attr_lu_enable.attr, 1482 &dev_attr_boot_lun_id.attr, 1483 &dev_attr_lun_write_protect.attr, 1484 &dev_attr_lun_queue_depth.attr, 1485 &dev_attr_psa_sensitive.attr, 1486 &dev_attr_lun_memory_type.attr, 1487 &dev_attr_data_reliability.attr, 1488 &dev_attr_logical_block_size.attr, 1489 &dev_attr_logical_block_count.attr, 1490 &dev_attr_erase_block_size.attr, 1491 &dev_attr_provisioning_type.attr, 1492 &dev_attr_physical_memory_resourse_count.attr, 1493 &dev_attr_context_capabilities.attr, 1494 &dev_attr_large_unit_granularity.attr, 1495 &dev_attr_wb_buf_alloc_units.attr, 1496 NULL, 1497}; 1498 1499static umode_t ufs_unit_descriptor_is_visible(struct kobject *kobj, struct attribute *attr, int n) 1500{ 1501 struct device *dev = container_of(kobj, struct device, kobj); 1502 struct scsi_device *sdev = to_scsi_device(dev); 1503 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); 1504 umode_t mode = attr->mode; 1505 1506 if (lun == UFS_UPIU_BOOT_WLUN || lun == UFS_UPIU_UFS_DEVICE_WLUN) 1507 /* Boot and device WLUN have no unit descriptors */ 1508 mode = 0; 1509 if (lun == UFS_UPIU_RPMB_WLUN && attr == &dev_attr_wb_buf_alloc_units.attr) 1510 mode = 0; 1511 1512 return mode; 1513} 1514 1515 1516const struct attribute_group ufs_sysfs_unit_descriptor_group = { 1517 .name = "unit_descriptor", 1518 .attrs = ufs_sysfs_unit_descriptor, 1519 .is_visible = ufs_unit_descriptor_is_visible, 1520}; 1521 1522static ssize_t dyn_cap_needed_attribute_show(struct device *dev, 1523 struct device_attribute *attr, char *buf) 1524{ 1525 u32 value; 1526 struct scsi_device *sdev = to_scsi_device(dev); 1527 struct ufs_hba *hba = shost_priv(sdev->host); 1528 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); 1529 int ret; 1530 1531 down(&hba->host_sem); 1532 if (!ufshcd_is_user_access_allowed(hba)) { 1533 ret = -EBUSY; 1534 goto out; 1535 } 1536 1537 ufshcd_rpm_get_sync(hba); 1538 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 1539 QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value); 1540 ufshcd_rpm_put_sync(hba); 1541 if (ret) { 1542 ret = -EINVAL; 1543 goto out; 1544 } 1545 1546 ret = sysfs_emit(buf, "0x%08X\n", value); 1547 1548out: 1549 up(&hba->host_sem); 1550 return ret; 1551} 1552static DEVICE_ATTR_RO(dyn_cap_needed_attribute); 1553 1554static struct attribute *ufs_sysfs_lun_attributes[] = { 1555 &dev_attr_dyn_cap_needed_attribute.attr, 1556 NULL, 1557}; 1558 1559const struct attribute_group ufs_sysfs_lun_attributes_group = { 1560 .attrs = ufs_sysfs_lun_attributes, 1561}; 1562 1563void ufs_sysfs_add_nodes(struct device *dev) 1564{ 1565 int ret; 1566 1567 ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups); 1568 if (ret) 1569 dev_err(dev, 1570 "%s: sysfs groups creation failed (err = %d)\n", 1571 __func__, ret); 1572} 1573 1574void ufs_sysfs_remove_nodes(struct device *dev) 1575{ 1576 sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups); 1577} 1578