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 14 static 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 25 static 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 34 static 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 48 static 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 60 static 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 72 static 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 84 static 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 } 112 113 static 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 } 120 121 static 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 } 126 127 static 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 } 135 136 static 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 } 144 145 static 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 } 152 153 static 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 } 158 159 static 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 } 167 168 static 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 */ 178 static 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 */ 190 static 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 } 200 201 static 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)); 224 225 out: 226 up(&hba->host_sem); 227 return ret; 228 } 229 230 static 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)); 254 255 out: 256 up(&hba->host_sem); 257 return ret ? ret : count; 258 } 259 260 static 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 } 267 268 static 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); 300 out: 301 up(&hba->host_sem); 302 return res < 0 ? res : count; 303 } 304 305 static 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 } 312 313 static 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 } 333 334 static 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 } 342 343 static 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); 371 372 out: 373 up(&hba->host_sem); 374 return res < 0 ? res : count; 375 } 376 377 static 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 } 385 386 static 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 static DEVICE_ATTR_RW(rpm_lvl); 409 static DEVICE_ATTR_RO(rpm_target_dev_state); 410 static DEVICE_ATTR_RO(rpm_target_link_state); 411 static DEVICE_ATTR_RW(spm_lvl); 412 static DEVICE_ATTR_RO(spm_target_dev_state); 413 static DEVICE_ATTR_RO(spm_target_link_state); 414 static DEVICE_ATTR_RW(auto_hibern8); 415 static DEVICE_ATTR_RW(wb_on); 416 static DEVICE_ATTR_RW(enable_wb_buf_flush); 417 static DEVICE_ATTR_RW(wb_flush_threshold); 418 static DEVICE_ATTR_RW(rtc_update_ms); 419 420 static struct attribute *ufs_sysfs_ufshcd_attrs[] = { 421 &dev_attr_rpm_lvl.attr, 422 &dev_attr_rpm_target_dev_state.attr, 423 &dev_attr_rpm_target_link_state.attr, 424 &dev_attr_spm_lvl.attr, 425 &dev_attr_spm_target_dev_state.attr, 426 &dev_attr_spm_target_link_state.attr, 427 &dev_attr_auto_hibern8.attr, 428 &dev_attr_wb_on.attr, 429 &dev_attr_enable_wb_buf_flush.attr, 430 &dev_attr_wb_flush_threshold.attr, 431 &dev_attr_rtc_update_ms.attr, 432 NULL 433 }; 434 435 static const struct attribute_group ufs_sysfs_default_group = { 436 .attrs = ufs_sysfs_ufshcd_attrs, 437 }; 438 439 static ssize_t clock_scaling_show(struct device *dev, struct device_attribute *attr, 440 char *buf) 441 { 442 struct ufs_hba *hba = dev_get_drvdata(dev); 443 444 return sysfs_emit(buf, "%d\n", ufshcd_is_clkscaling_supported(hba)); 445 } 446 447 static ssize_t write_booster_show(struct device *dev, struct device_attribute *attr, 448 char *buf) 449 { 450 struct ufs_hba *hba = dev_get_drvdata(dev); 451 452 return sysfs_emit(buf, "%d\n", ufshcd_is_wb_allowed(hba)); 453 } 454 455 static DEVICE_ATTR_RO(clock_scaling); 456 static DEVICE_ATTR_RO(write_booster); 457 458 /* 459 * See Documentation/ABI/testing/sysfs-driver-ufs for the semantics of this 460 * group. 461 */ 462 static struct attribute *ufs_sysfs_capabilities_attrs[] = { 463 &dev_attr_clock_scaling.attr, 464 &dev_attr_write_booster.attr, 465 NULL 466 }; 467 468 static const struct attribute_group ufs_sysfs_capabilities_group = { 469 .name = "capabilities", 470 .attrs = ufs_sysfs_capabilities_attrs, 471 }; 472 473 static ssize_t monitor_enable_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, "%d\n", hba->monitor.enabled); 479 } 480 481 static ssize_t monitor_enable_store(struct device *dev, 482 struct device_attribute *attr, 483 const char *buf, size_t count) 484 { 485 struct ufs_hba *hba = dev_get_drvdata(dev); 486 unsigned long value, flags; 487 488 if (kstrtoul(buf, 0, &value)) 489 return -EINVAL; 490 491 value = !!value; 492 spin_lock_irqsave(hba->host->host_lock, flags); 493 if (value == hba->monitor.enabled) 494 goto out_unlock; 495 496 if (!value) { 497 memset(&hba->monitor, 0, sizeof(hba->monitor)); 498 } else { 499 hba->monitor.enabled = true; 500 hba->monitor.enabled_ts = ktime_get(); 501 } 502 503 out_unlock: 504 spin_unlock_irqrestore(hba->host->host_lock, flags); 505 return count; 506 } 507 508 static ssize_t monitor_chunk_size_show(struct device *dev, 509 struct device_attribute *attr, char *buf) 510 { 511 struct ufs_hba *hba = dev_get_drvdata(dev); 512 513 return sysfs_emit(buf, "%lu\n", hba->monitor.chunk_size); 514 } 515 516 static ssize_t monitor_chunk_size_store(struct device *dev, 517 struct device_attribute *attr, 518 const char *buf, size_t count) 519 { 520 struct ufs_hba *hba = dev_get_drvdata(dev); 521 unsigned long value, flags; 522 523 if (kstrtoul(buf, 0, &value)) 524 return -EINVAL; 525 526 spin_lock_irqsave(hba->host->host_lock, flags); 527 /* Only allow chunk size change when monitor is disabled */ 528 if (!hba->monitor.enabled) 529 hba->monitor.chunk_size = value; 530 spin_unlock_irqrestore(hba->host->host_lock, flags); 531 return count; 532 } 533 534 static ssize_t read_total_sectors_show(struct device *dev, 535 struct device_attribute *attr, char *buf) 536 { 537 struct ufs_hba *hba = dev_get_drvdata(dev); 538 539 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[READ]); 540 } 541 542 static ssize_t read_total_busy_show(struct device *dev, 543 struct device_attribute *attr, char *buf) 544 { 545 struct ufs_hba *hba = dev_get_drvdata(dev); 546 547 return sysfs_emit(buf, "%llu\n", 548 ktime_to_us(hba->monitor.total_busy[READ])); 549 } 550 551 static ssize_t read_nr_requests_show(struct device *dev, 552 struct device_attribute *attr, char *buf) 553 { 554 struct ufs_hba *hba = dev_get_drvdata(dev); 555 556 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[READ]); 557 } 558 559 static ssize_t read_req_latency_avg_show(struct device *dev, 560 struct device_attribute *attr, 561 char *buf) 562 { 563 struct ufs_hba *hba = dev_get_drvdata(dev); 564 struct ufs_hba_monitor *m = &hba->monitor; 565 566 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[READ]), 567 m->nr_req[READ])); 568 } 569 570 static ssize_t read_req_latency_max_show(struct device *dev, 571 struct device_attribute *attr, 572 char *buf) 573 { 574 struct ufs_hba *hba = dev_get_drvdata(dev); 575 576 return sysfs_emit(buf, "%llu\n", 577 ktime_to_us(hba->monitor.lat_max[READ])); 578 } 579 580 static ssize_t read_req_latency_min_show(struct device *dev, 581 struct device_attribute *attr, 582 char *buf) 583 { 584 struct ufs_hba *hba = dev_get_drvdata(dev); 585 586 return sysfs_emit(buf, "%llu\n", 587 ktime_to_us(hba->monitor.lat_min[READ])); 588 } 589 590 static ssize_t read_req_latency_sum_show(struct device *dev, 591 struct device_attribute *attr, 592 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.lat_sum[READ])); 598 } 599 600 static ssize_t write_total_sectors_show(struct device *dev, 601 struct device_attribute *attr, 602 char *buf) 603 { 604 struct ufs_hba *hba = dev_get_drvdata(dev); 605 606 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[WRITE]); 607 } 608 609 static ssize_t write_total_busy_show(struct device *dev, 610 struct device_attribute *attr, char *buf) 611 { 612 struct ufs_hba *hba = dev_get_drvdata(dev); 613 614 return sysfs_emit(buf, "%llu\n", 615 ktime_to_us(hba->monitor.total_busy[WRITE])); 616 } 617 618 static ssize_t write_nr_requests_show(struct device *dev, 619 struct device_attribute *attr, char *buf) 620 { 621 struct ufs_hba *hba = dev_get_drvdata(dev); 622 623 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[WRITE]); 624 } 625 626 static ssize_t write_req_latency_avg_show(struct device *dev, 627 struct device_attribute *attr, 628 char *buf) 629 { 630 struct ufs_hba *hba = dev_get_drvdata(dev); 631 struct ufs_hba_monitor *m = &hba->monitor; 632 633 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[WRITE]), 634 m->nr_req[WRITE])); 635 } 636 637 static ssize_t write_req_latency_max_show(struct device *dev, 638 struct device_attribute *attr, 639 char *buf) 640 { 641 struct ufs_hba *hba = dev_get_drvdata(dev); 642 643 return sysfs_emit(buf, "%llu\n", 644 ktime_to_us(hba->monitor.lat_max[WRITE])); 645 } 646 647 static ssize_t write_req_latency_min_show(struct device *dev, 648 struct device_attribute *attr, 649 char *buf) 650 { 651 struct ufs_hba *hba = dev_get_drvdata(dev); 652 653 return sysfs_emit(buf, "%llu\n", 654 ktime_to_us(hba->monitor.lat_min[WRITE])); 655 } 656 657 static ssize_t write_req_latency_sum_show(struct device *dev, 658 struct device_attribute *attr, 659 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.lat_sum[WRITE])); 665 } 666 667 static DEVICE_ATTR_RW(monitor_enable); 668 static DEVICE_ATTR_RW(monitor_chunk_size); 669 static DEVICE_ATTR_RO(read_total_sectors); 670 static DEVICE_ATTR_RO(read_total_busy); 671 static DEVICE_ATTR_RO(read_nr_requests); 672 static DEVICE_ATTR_RO(read_req_latency_avg); 673 static DEVICE_ATTR_RO(read_req_latency_max); 674 static DEVICE_ATTR_RO(read_req_latency_min); 675 static DEVICE_ATTR_RO(read_req_latency_sum); 676 static DEVICE_ATTR_RO(write_total_sectors); 677 static DEVICE_ATTR_RO(write_total_busy); 678 static DEVICE_ATTR_RO(write_nr_requests); 679 static DEVICE_ATTR_RO(write_req_latency_avg); 680 static DEVICE_ATTR_RO(write_req_latency_max); 681 static DEVICE_ATTR_RO(write_req_latency_min); 682 static DEVICE_ATTR_RO(write_req_latency_sum); 683 684 static struct attribute *ufs_sysfs_monitor_attrs[] = { 685 &dev_attr_monitor_enable.attr, 686 &dev_attr_monitor_chunk_size.attr, 687 &dev_attr_read_total_sectors.attr, 688 &dev_attr_read_total_busy.attr, 689 &dev_attr_read_nr_requests.attr, 690 &dev_attr_read_req_latency_avg.attr, 691 &dev_attr_read_req_latency_max.attr, 692 &dev_attr_read_req_latency_min.attr, 693 &dev_attr_read_req_latency_sum.attr, 694 &dev_attr_write_total_sectors.attr, 695 &dev_attr_write_total_busy.attr, 696 &dev_attr_write_nr_requests.attr, 697 &dev_attr_write_req_latency_avg.attr, 698 &dev_attr_write_req_latency_max.attr, 699 &dev_attr_write_req_latency_min.attr, 700 &dev_attr_write_req_latency_sum.attr, 701 NULL 702 }; 703 704 static const struct attribute_group ufs_sysfs_monitor_group = { 705 .name = "monitor", 706 .attrs = ufs_sysfs_monitor_attrs, 707 }; 708 709 static ssize_t lane_show(struct device *dev, struct device_attribute *attr, 710 char *buf) 711 { 712 struct ufs_hba *hba = dev_get_drvdata(dev); 713 714 return sysfs_emit(buf, "%u\n", hba->pwr_info.lane_rx); 715 } 716 717 static ssize_t mode_show(struct device *dev, struct device_attribute *attr, 718 char *buf) 719 { 720 struct ufs_hba *hba = dev_get_drvdata(dev); 721 722 return sysfs_emit(buf, "%s\n", ufs_pa_pwr_mode_to_string(hba->pwr_info.pwr_rx)); 723 } 724 725 static ssize_t rate_show(struct device *dev, struct device_attribute *attr, 726 char *buf) 727 { 728 struct ufs_hba *hba = dev_get_drvdata(dev); 729 730 return sysfs_emit(buf, "%s\n", ufs_hs_gear_rate_to_string(hba->pwr_info.hs_rate)); 731 } 732 733 static ssize_t gear_show(struct device *dev, struct device_attribute *attr, 734 char *buf) 735 { 736 struct ufs_hba *hba = dev_get_drvdata(dev); 737 738 return sysfs_emit(buf, "%s\n", hba->pwr_info.hs_rate ? 739 ufs_hs_gear_to_string(hba->pwr_info.gear_rx) : 740 ufs_pwm_gear_to_string(hba->pwr_info.gear_rx)); 741 } 742 743 static ssize_t dev_pm_show(struct device *dev, struct device_attribute *attr, 744 char *buf) 745 { 746 struct ufs_hba *hba = dev_get_drvdata(dev); 747 748 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(hba->curr_dev_pwr_mode)); 749 } 750 751 static ssize_t link_state_show(struct device *dev, 752 struct device_attribute *attr, char *buf) 753 { 754 struct ufs_hba *hba = dev_get_drvdata(dev); 755 756 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(hba->uic_link_state)); 757 } 758 759 static DEVICE_ATTR_RO(lane); 760 static DEVICE_ATTR_RO(mode); 761 static DEVICE_ATTR_RO(rate); 762 static DEVICE_ATTR_RO(gear); 763 static DEVICE_ATTR_RO(dev_pm); 764 static DEVICE_ATTR_RO(link_state); 765 766 static struct attribute *ufs_power_info_attrs[] = { 767 &dev_attr_lane.attr, 768 &dev_attr_mode.attr, 769 &dev_attr_rate.attr, 770 &dev_attr_gear.attr, 771 &dev_attr_dev_pm.attr, 772 &dev_attr_link_state.attr, 773 NULL 774 }; 775 776 static const struct attribute_group ufs_sysfs_power_info_group = { 777 .name = "power_info", 778 .attrs = ufs_power_info_attrs, 779 }; 780 781 static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba, 782 enum desc_idn desc_id, 783 u8 desc_index, 784 u8 param_offset, 785 u8 *sysfs_buf, 786 u8 param_size) 787 { 788 u8 desc_buf[8] = {0}; 789 int ret; 790 791 if (param_size > 8) 792 return -EINVAL; 793 794 down(&hba->host_sem); 795 if (!ufshcd_is_user_access_allowed(hba)) { 796 ret = -EBUSY; 797 goto out; 798 } 799 800 ufshcd_rpm_get_sync(hba); 801 ret = ufshcd_read_desc_param(hba, desc_id, desc_index, 802 param_offset, desc_buf, param_size); 803 ufshcd_rpm_put_sync(hba); 804 if (ret) { 805 ret = -EINVAL; 806 goto out; 807 } 808 809 switch (param_size) { 810 case 1: 811 ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf); 812 break; 813 case 2: 814 ret = sysfs_emit(sysfs_buf, "0x%04X\n", 815 get_unaligned_be16(desc_buf)); 816 break; 817 case 4: 818 ret = sysfs_emit(sysfs_buf, "0x%08X\n", 819 get_unaligned_be32(desc_buf)); 820 break; 821 case 8: 822 ret = sysfs_emit(sysfs_buf, "0x%016llX\n", 823 get_unaligned_be64(desc_buf)); 824 break; 825 } 826 827 out: 828 up(&hba->host_sem); 829 return ret; 830 } 831 832 #define UFS_DESC_PARAM(_name, _puname, _duname, _size) \ 833 static ssize_t _name##_show(struct device *dev, \ 834 struct device_attribute *attr, char *buf) \ 835 { \ 836 struct ufs_hba *hba = dev_get_drvdata(dev); \ 837 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ 838 0, _duname##_DESC_PARAM##_puname, buf, _size); \ 839 } \ 840 static DEVICE_ATTR_RO(_name) 841 842 #define UFS_DEVICE_DESC_PARAM(_name, _uname, _size) \ 843 UFS_DESC_PARAM(_name, _uname, DEVICE, _size) 844 845 UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1); 846 UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1); 847 UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1); 848 UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1); 849 UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1); 850 UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1); 851 UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1); 852 UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1); 853 UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1); 854 UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1); 855 UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1); 856 UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1); 857 UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1); 858 UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1); 859 UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2); 860 UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2); 861 UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2); 862 UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1); 863 UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2); 864 UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1); 865 UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1); 866 UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1); 867 UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2); 868 UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1); 869 UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4); 870 UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1); 871 UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4); 872 UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1); 873 UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1); 874 UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4); 875 876 static struct attribute *ufs_sysfs_device_descriptor[] = { 877 &dev_attr_device_type.attr, 878 &dev_attr_device_class.attr, 879 &dev_attr_device_sub_class.attr, 880 &dev_attr_protocol.attr, 881 &dev_attr_number_of_luns.attr, 882 &dev_attr_number_of_wluns.attr, 883 &dev_attr_boot_enable.attr, 884 &dev_attr_descriptor_access_enable.attr, 885 &dev_attr_initial_power_mode.attr, 886 &dev_attr_high_priority_lun.attr, 887 &dev_attr_secure_removal_type.attr, 888 &dev_attr_support_security_lun.attr, 889 &dev_attr_bkops_termination_latency.attr, 890 &dev_attr_initial_active_icc_level.attr, 891 &dev_attr_specification_version.attr, 892 &dev_attr_manufacturing_date.attr, 893 &dev_attr_manufacturer_id.attr, 894 &dev_attr_rtt_capability.attr, 895 &dev_attr_rtc_update.attr, 896 &dev_attr_ufs_features.attr, 897 &dev_attr_ffu_timeout.attr, 898 &dev_attr_queue_depth.attr, 899 &dev_attr_device_version.attr, 900 &dev_attr_number_of_secure_wpa.attr, 901 &dev_attr_psa_max_data_size.attr, 902 &dev_attr_psa_state_timeout.attr, 903 &dev_attr_ext_feature_sup.attr, 904 &dev_attr_wb_presv_us_en.attr, 905 &dev_attr_wb_type.attr, 906 &dev_attr_wb_shared_alloc_units.attr, 907 NULL, 908 }; 909 910 static const struct attribute_group ufs_sysfs_device_descriptor_group = { 911 .name = "device_descriptor", 912 .attrs = ufs_sysfs_device_descriptor, 913 }; 914 915 #define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size) \ 916 UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size) 917 918 UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2); 919 UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2); 920 921 static struct attribute *ufs_sysfs_interconnect_descriptor[] = { 922 &dev_attr_unipro_version.attr, 923 &dev_attr_mphy_version.attr, 924 NULL, 925 }; 926 927 static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = { 928 .name = "interconnect_descriptor", 929 .attrs = ufs_sysfs_interconnect_descriptor, 930 }; 931 932 #define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size) \ 933 UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size) 934 935 UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8); 936 UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1); 937 UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4); 938 UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1); 939 UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1); 940 UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1); 941 UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1); 942 UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1); 943 UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1); 944 UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1); 945 UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1); 946 UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1); 947 UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1); 948 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1); 949 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1); 950 UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1); 951 UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2); 952 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units, 953 _SCM_MAX_NUM_UNITS, 4); 954 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor, 955 _SCM_CAP_ADJ_FCTR, 2); 956 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units, 957 _NPM_MAX_NUM_UNITS, 4); 958 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor, 959 _NPM_CAP_ADJ_FCTR, 2); 960 UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units, 961 _ENM1_MAX_NUM_UNITS, 4); 962 UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor, 963 _ENM1_CAP_ADJ_FCTR, 2); 964 UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units, 965 _ENM2_MAX_NUM_UNITS, 4); 966 UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor, 967 _ENM2_CAP_ADJ_FCTR, 2); 968 UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units, 969 _ENM3_MAX_NUM_UNITS, 4); 970 UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor, 971 _ENM3_CAP_ADJ_FCTR, 2); 972 UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units, 973 _ENM4_MAX_NUM_UNITS, 4); 974 UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor, 975 _ENM4_CAP_ADJ_FCTR, 2); 976 UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4); 977 UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1); 978 UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1); 979 UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1); 980 UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1); 981 982 983 static struct attribute *ufs_sysfs_geometry_descriptor[] = { 984 &dev_attr_raw_device_capacity.attr, 985 &dev_attr_max_number_of_luns.attr, 986 &dev_attr_segment_size.attr, 987 &dev_attr_allocation_unit_size.attr, 988 &dev_attr_min_addressable_block_size.attr, 989 &dev_attr_optimal_read_block_size.attr, 990 &dev_attr_optimal_write_block_size.attr, 991 &dev_attr_max_in_buffer_size.attr, 992 &dev_attr_max_out_buffer_size.attr, 993 &dev_attr_rpmb_rw_size.attr, 994 &dev_attr_dyn_capacity_resource_policy.attr, 995 &dev_attr_data_ordering.attr, 996 &dev_attr_max_number_of_contexts.attr, 997 &dev_attr_sys_data_tag_unit_size.attr, 998 &dev_attr_sys_data_tag_resource_size.attr, 999 &dev_attr_secure_removal_types.attr, 1000 &dev_attr_memory_types.attr, 1001 &dev_attr_sys_code_memory_max_alloc_units.attr, 1002 &dev_attr_sys_code_memory_capacity_adjustment_factor.attr, 1003 &dev_attr_non_persist_memory_max_alloc_units.attr, 1004 &dev_attr_non_persist_memory_capacity_adjustment_factor.attr, 1005 &dev_attr_enh1_memory_max_alloc_units.attr, 1006 &dev_attr_enh1_memory_capacity_adjustment_factor.attr, 1007 &dev_attr_enh2_memory_max_alloc_units.attr, 1008 &dev_attr_enh2_memory_capacity_adjustment_factor.attr, 1009 &dev_attr_enh3_memory_max_alloc_units.attr, 1010 &dev_attr_enh3_memory_capacity_adjustment_factor.attr, 1011 &dev_attr_enh4_memory_max_alloc_units.attr, 1012 &dev_attr_enh4_memory_capacity_adjustment_factor.attr, 1013 &dev_attr_wb_max_alloc_units.attr, 1014 &dev_attr_wb_max_wb_luns.attr, 1015 &dev_attr_wb_buff_cap_adj.attr, 1016 &dev_attr_wb_sup_red_type.attr, 1017 &dev_attr_wb_sup_wb_type.attr, 1018 NULL, 1019 }; 1020 1021 static const struct attribute_group ufs_sysfs_geometry_descriptor_group = { 1022 .name = "geometry_descriptor", 1023 .attrs = ufs_sysfs_geometry_descriptor, 1024 }; 1025 1026 #define UFS_HEALTH_DESC_PARAM(_name, _uname, _size) \ 1027 UFS_DESC_PARAM(_name, _uname, HEALTH, _size) 1028 1029 UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1); 1030 UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1); 1031 UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1); 1032 1033 static struct attribute *ufs_sysfs_health_descriptor[] = { 1034 &dev_attr_eol_info.attr, 1035 &dev_attr_life_time_estimation_a.attr, 1036 &dev_attr_life_time_estimation_b.attr, 1037 NULL, 1038 }; 1039 1040 static const struct attribute_group ufs_sysfs_health_descriptor_group = { 1041 .name = "health_descriptor", 1042 .attrs = ufs_sysfs_health_descriptor, 1043 }; 1044 1045 #define UFS_POWER_DESC_PARAM(_name, _uname, _index) \ 1046 static ssize_t _name##_index##_show(struct device *dev, \ 1047 struct device_attribute *attr, char *buf) \ 1048 { \ 1049 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1050 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, \ 1051 PWR_DESC##_uname##_0 + _index * 2, buf, 2); \ 1052 } \ 1053 static DEVICE_ATTR_RO(_name##_index) 1054 1055 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0); 1056 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1); 1057 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2); 1058 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3); 1059 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4); 1060 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5); 1061 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6); 1062 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7); 1063 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8); 1064 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9); 1065 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10); 1066 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11); 1067 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12); 1068 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13); 1069 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14); 1070 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15); 1071 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0); 1072 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1); 1073 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2); 1074 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3); 1075 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4); 1076 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5); 1077 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6); 1078 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7); 1079 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8); 1080 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9); 1081 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10); 1082 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11); 1083 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12); 1084 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13); 1085 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14); 1086 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15); 1087 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0); 1088 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1); 1089 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2); 1090 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3); 1091 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4); 1092 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5); 1093 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6); 1094 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7); 1095 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8); 1096 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9); 1097 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10); 1098 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11); 1099 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12); 1100 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13); 1101 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14); 1102 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15); 1103 1104 static struct attribute *ufs_sysfs_power_descriptor[] = { 1105 &dev_attr_active_icc_levels_vcc0.attr, 1106 &dev_attr_active_icc_levels_vcc1.attr, 1107 &dev_attr_active_icc_levels_vcc2.attr, 1108 &dev_attr_active_icc_levels_vcc3.attr, 1109 &dev_attr_active_icc_levels_vcc4.attr, 1110 &dev_attr_active_icc_levels_vcc5.attr, 1111 &dev_attr_active_icc_levels_vcc6.attr, 1112 &dev_attr_active_icc_levels_vcc7.attr, 1113 &dev_attr_active_icc_levels_vcc8.attr, 1114 &dev_attr_active_icc_levels_vcc9.attr, 1115 &dev_attr_active_icc_levels_vcc10.attr, 1116 &dev_attr_active_icc_levels_vcc11.attr, 1117 &dev_attr_active_icc_levels_vcc12.attr, 1118 &dev_attr_active_icc_levels_vcc13.attr, 1119 &dev_attr_active_icc_levels_vcc14.attr, 1120 &dev_attr_active_icc_levels_vcc15.attr, 1121 &dev_attr_active_icc_levels_vccq0.attr, 1122 &dev_attr_active_icc_levels_vccq1.attr, 1123 &dev_attr_active_icc_levels_vccq2.attr, 1124 &dev_attr_active_icc_levels_vccq3.attr, 1125 &dev_attr_active_icc_levels_vccq4.attr, 1126 &dev_attr_active_icc_levels_vccq5.attr, 1127 &dev_attr_active_icc_levels_vccq6.attr, 1128 &dev_attr_active_icc_levels_vccq7.attr, 1129 &dev_attr_active_icc_levels_vccq8.attr, 1130 &dev_attr_active_icc_levels_vccq9.attr, 1131 &dev_attr_active_icc_levels_vccq10.attr, 1132 &dev_attr_active_icc_levels_vccq11.attr, 1133 &dev_attr_active_icc_levels_vccq12.attr, 1134 &dev_attr_active_icc_levels_vccq13.attr, 1135 &dev_attr_active_icc_levels_vccq14.attr, 1136 &dev_attr_active_icc_levels_vccq15.attr, 1137 &dev_attr_active_icc_levels_vccq20.attr, 1138 &dev_attr_active_icc_levels_vccq21.attr, 1139 &dev_attr_active_icc_levels_vccq22.attr, 1140 &dev_attr_active_icc_levels_vccq23.attr, 1141 &dev_attr_active_icc_levels_vccq24.attr, 1142 &dev_attr_active_icc_levels_vccq25.attr, 1143 &dev_attr_active_icc_levels_vccq26.attr, 1144 &dev_attr_active_icc_levels_vccq27.attr, 1145 &dev_attr_active_icc_levels_vccq28.attr, 1146 &dev_attr_active_icc_levels_vccq29.attr, 1147 &dev_attr_active_icc_levels_vccq210.attr, 1148 &dev_attr_active_icc_levels_vccq211.attr, 1149 &dev_attr_active_icc_levels_vccq212.attr, 1150 &dev_attr_active_icc_levels_vccq213.attr, 1151 &dev_attr_active_icc_levels_vccq214.attr, 1152 &dev_attr_active_icc_levels_vccq215.attr, 1153 NULL, 1154 }; 1155 1156 static const struct attribute_group ufs_sysfs_power_descriptor_group = { 1157 .name = "power_descriptor", 1158 .attrs = ufs_sysfs_power_descriptor, 1159 }; 1160 1161 #define UFS_STRING_DESCRIPTOR(_name, _pname) \ 1162 static ssize_t _name##_show(struct device *dev, \ 1163 struct device_attribute *attr, char *buf) \ 1164 { \ 1165 u8 index; \ 1166 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1167 int ret; \ 1168 int desc_len = QUERY_DESC_MAX_SIZE; \ 1169 u8 *desc_buf; \ 1170 \ 1171 down(&hba->host_sem); \ 1172 if (!ufshcd_is_user_access_allowed(hba)) { \ 1173 up(&hba->host_sem); \ 1174 return -EBUSY; \ 1175 } \ 1176 desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC); \ 1177 if (!desc_buf) { \ 1178 up(&hba->host_sem); \ 1179 return -ENOMEM; \ 1180 } \ 1181 ufshcd_rpm_get_sync(hba); \ 1182 ret = ufshcd_query_descriptor_retry(hba, \ 1183 UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE, \ 1184 0, 0, desc_buf, &desc_len); \ 1185 if (ret) { \ 1186 ret = -EINVAL; \ 1187 goto out; \ 1188 } \ 1189 index = desc_buf[DEVICE_DESC_PARAM##_pname]; \ 1190 kfree(desc_buf); \ 1191 desc_buf = NULL; \ 1192 ret = ufshcd_read_string_desc(hba, index, &desc_buf, \ 1193 SD_ASCII_STD); \ 1194 if (ret < 0) \ 1195 goto out; \ 1196 ret = sysfs_emit(buf, "%s\n", desc_buf); \ 1197 out: \ 1198 ufshcd_rpm_put_sync(hba); \ 1199 kfree(desc_buf); \ 1200 up(&hba->host_sem); \ 1201 return ret; \ 1202 } \ 1203 static DEVICE_ATTR_RO(_name) 1204 1205 UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME); 1206 UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME); 1207 UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID); 1208 UFS_STRING_DESCRIPTOR(serial_number, _SN); 1209 UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV); 1210 1211 static struct attribute *ufs_sysfs_string_descriptors[] = { 1212 &dev_attr_manufacturer_name.attr, 1213 &dev_attr_product_name.attr, 1214 &dev_attr_oem_id.attr, 1215 &dev_attr_serial_number.attr, 1216 &dev_attr_product_revision.attr, 1217 NULL, 1218 }; 1219 1220 static const struct attribute_group ufs_sysfs_string_descriptors_group = { 1221 .name = "string_descriptors", 1222 .attrs = ufs_sysfs_string_descriptors, 1223 }; 1224 1225 static inline bool ufshcd_is_wb_flags(enum flag_idn idn) 1226 { 1227 return idn >= QUERY_FLAG_IDN_WB_EN && 1228 idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8; 1229 } 1230 1231 #define UFS_FLAG(_name, _uname) \ 1232 static ssize_t _name##_show(struct device *dev, \ 1233 struct device_attribute *attr, char *buf) \ 1234 { \ 1235 bool flag; \ 1236 u8 index = 0; \ 1237 int ret; \ 1238 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1239 \ 1240 down(&hba->host_sem); \ 1241 if (!ufshcd_is_user_access_allowed(hba)) { \ 1242 up(&hba->host_sem); \ 1243 return -EBUSY; \ 1244 } \ 1245 if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname)) \ 1246 index = ufshcd_wb_get_query_index(hba); \ 1247 ufshcd_rpm_get_sync(hba); \ 1248 ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \ 1249 QUERY_FLAG_IDN##_uname, index, &flag); \ 1250 ufshcd_rpm_put_sync(hba); \ 1251 if (ret) { \ 1252 ret = -EINVAL; \ 1253 goto out; \ 1254 } \ 1255 ret = sysfs_emit(buf, "%s\n", flag ? "true" : "false"); \ 1256 out: \ 1257 up(&hba->host_sem); \ 1258 return ret; \ 1259 } \ 1260 static DEVICE_ATTR_RO(_name) 1261 1262 UFS_FLAG(device_init, _FDEVICEINIT); 1263 UFS_FLAG(permanent_wpe, _PERMANENT_WPE); 1264 UFS_FLAG(power_on_wpe, _PWR_ON_WPE); 1265 UFS_FLAG(bkops_enable, _BKOPS_EN); 1266 UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE); 1267 UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL); 1268 UFS_FLAG(busy_rtc, _BUSY_RTC); 1269 UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE); 1270 UFS_FLAG(wb_enable, _WB_EN); 1271 UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN); 1272 UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8); 1273 1274 static struct attribute *ufs_sysfs_device_flags[] = { 1275 &dev_attr_device_init.attr, 1276 &dev_attr_permanent_wpe.attr, 1277 &dev_attr_power_on_wpe.attr, 1278 &dev_attr_bkops_enable.attr, 1279 &dev_attr_life_span_mode_enable.attr, 1280 &dev_attr_phy_resource_removal.attr, 1281 &dev_attr_busy_rtc.attr, 1282 &dev_attr_disable_fw_update.attr, 1283 &dev_attr_wb_enable.attr, 1284 &dev_attr_wb_flush_en.attr, 1285 &dev_attr_wb_flush_during_h8.attr, 1286 NULL, 1287 }; 1288 1289 static const struct attribute_group ufs_sysfs_flags_group = { 1290 .name = "flags", 1291 .attrs = ufs_sysfs_device_flags, 1292 }; 1293 1294 static inline bool ufshcd_is_wb_attrs(enum attr_idn idn) 1295 { 1296 return idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS && 1297 idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE; 1298 } 1299 1300 #define UFS_ATTRIBUTE(_name, _uname) \ 1301 static ssize_t _name##_show(struct device *dev, \ 1302 struct device_attribute *attr, char *buf) \ 1303 { \ 1304 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1305 u32 value; \ 1306 int ret; \ 1307 u8 index = 0; \ 1308 \ 1309 down(&hba->host_sem); \ 1310 if (!ufshcd_is_user_access_allowed(hba)) { \ 1311 up(&hba->host_sem); \ 1312 return -EBUSY; \ 1313 } \ 1314 if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname)) \ 1315 index = ufshcd_wb_get_query_index(hba); \ 1316 ufshcd_rpm_get_sync(hba); \ 1317 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, \ 1318 QUERY_ATTR_IDN##_uname, index, 0, &value); \ 1319 ufshcd_rpm_put_sync(hba); \ 1320 if (ret) { \ 1321 ret = -EINVAL; \ 1322 goto out; \ 1323 } \ 1324 ret = sysfs_emit(buf, "0x%08X\n", value); \ 1325 out: \ 1326 up(&hba->host_sem); \ 1327 return ret; \ 1328 } \ 1329 static DEVICE_ATTR_RO(_name) 1330 1331 UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN); 1332 UFS_ATTRIBUTE(current_power_mode, _POWER_MODE); 1333 UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL); 1334 UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN); 1335 UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS); 1336 UFS_ATTRIBUTE(purge_status, _PURGE_STATUS); 1337 UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN); 1338 UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT); 1339 UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ); 1340 UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK); 1341 UFS_ATTRIBUTE(max_number_of_rtt, _MAX_NUM_OF_RTT); 1342 UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL); 1343 UFS_ATTRIBUTE(exception_event_status, _EE_STATUS); 1344 UFS_ATTRIBUTE(ffu_status, _FFU_STATUS); 1345 UFS_ATTRIBUTE(psa_state, _PSA_STATE); 1346 UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE); 1347 UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS); 1348 UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE); 1349 UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST); 1350 UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE); 1351 1352 1353 static struct attribute *ufs_sysfs_attributes[] = { 1354 &dev_attr_boot_lun_enabled.attr, 1355 &dev_attr_current_power_mode.attr, 1356 &dev_attr_active_icc_level.attr, 1357 &dev_attr_ooo_data_enabled.attr, 1358 &dev_attr_bkops_status.attr, 1359 &dev_attr_purge_status.attr, 1360 &dev_attr_max_data_in_size.attr, 1361 &dev_attr_max_data_out_size.attr, 1362 &dev_attr_reference_clock_frequency.attr, 1363 &dev_attr_configuration_descriptor_lock.attr, 1364 &dev_attr_max_number_of_rtt.attr, 1365 &dev_attr_exception_event_control.attr, 1366 &dev_attr_exception_event_status.attr, 1367 &dev_attr_ffu_status.attr, 1368 &dev_attr_psa_state.attr, 1369 &dev_attr_psa_data_size.attr, 1370 &dev_attr_wb_flush_status.attr, 1371 &dev_attr_wb_avail_buf.attr, 1372 &dev_attr_wb_life_time_est.attr, 1373 &dev_attr_wb_cur_buf.attr, 1374 NULL, 1375 }; 1376 1377 static const struct attribute_group ufs_sysfs_attributes_group = { 1378 .name = "attributes", 1379 .attrs = ufs_sysfs_attributes, 1380 }; 1381 1382 static const struct attribute_group *ufs_sysfs_groups[] = { 1383 &ufs_sysfs_default_group, 1384 &ufs_sysfs_capabilities_group, 1385 &ufs_sysfs_monitor_group, 1386 &ufs_sysfs_power_info_group, 1387 &ufs_sysfs_device_descriptor_group, 1388 &ufs_sysfs_interconnect_descriptor_group, 1389 &ufs_sysfs_geometry_descriptor_group, 1390 &ufs_sysfs_health_descriptor_group, 1391 &ufs_sysfs_power_descriptor_group, 1392 &ufs_sysfs_string_descriptors_group, 1393 &ufs_sysfs_flags_group, 1394 &ufs_sysfs_attributes_group, 1395 NULL, 1396 }; 1397 1398 #define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size) \ 1399 static ssize_t _pname##_show(struct device *dev, \ 1400 struct device_attribute *attr, char *buf) \ 1401 { \ 1402 struct scsi_device *sdev = to_scsi_device(dev); \ 1403 struct ufs_hba *hba = shost_priv(sdev->host); \ 1404 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); \ 1405 if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun)) \ 1406 return -EINVAL; \ 1407 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ 1408 lun, _duname##_DESC_PARAM##_puname, buf, _size); \ 1409 } \ 1410 static DEVICE_ATTR_RO(_pname) 1411 1412 #define UFS_UNIT_DESC_PARAM(_name, _uname, _size) \ 1413 UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size) 1414 1415 UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1); 1416 UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1); 1417 UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1); 1418 UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1); 1419 UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1); 1420 UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1); 1421 UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1); 1422 UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1); 1423 UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8); 1424 UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4); 1425 UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1); 1426 UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8); 1427 UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2); 1428 UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1); 1429 UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4); 1430 1431 static struct attribute *ufs_sysfs_unit_descriptor[] = { 1432 &dev_attr_lu_enable.attr, 1433 &dev_attr_boot_lun_id.attr, 1434 &dev_attr_lun_write_protect.attr, 1435 &dev_attr_lun_queue_depth.attr, 1436 &dev_attr_psa_sensitive.attr, 1437 &dev_attr_lun_memory_type.attr, 1438 &dev_attr_data_reliability.attr, 1439 &dev_attr_logical_block_size.attr, 1440 &dev_attr_logical_block_count.attr, 1441 &dev_attr_erase_block_size.attr, 1442 &dev_attr_provisioning_type.attr, 1443 &dev_attr_physical_memory_resourse_count.attr, 1444 &dev_attr_context_capabilities.attr, 1445 &dev_attr_large_unit_granularity.attr, 1446 &dev_attr_wb_buf_alloc_units.attr, 1447 NULL, 1448 }; 1449 1450 static umode_t ufs_unit_descriptor_is_visible(struct kobject *kobj, struct attribute *attr, int n) 1451 { 1452 struct device *dev = container_of(kobj, struct device, kobj); 1453 struct scsi_device *sdev = to_scsi_device(dev); 1454 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); 1455 umode_t mode = attr->mode; 1456 1457 if (lun == UFS_UPIU_BOOT_WLUN || lun == UFS_UPIU_UFS_DEVICE_WLUN) 1458 /* Boot and device WLUN have no unit descriptors */ 1459 mode = 0; 1460 if (lun == UFS_UPIU_RPMB_WLUN && attr == &dev_attr_wb_buf_alloc_units.attr) 1461 mode = 0; 1462 1463 return mode; 1464 } 1465 1466 1467 const struct attribute_group ufs_sysfs_unit_descriptor_group = { 1468 .name = "unit_descriptor", 1469 .attrs = ufs_sysfs_unit_descriptor, 1470 .is_visible = ufs_unit_descriptor_is_visible, 1471 }; 1472 1473 static ssize_t dyn_cap_needed_attribute_show(struct device *dev, 1474 struct device_attribute *attr, char *buf) 1475 { 1476 u32 value; 1477 struct scsi_device *sdev = to_scsi_device(dev); 1478 struct ufs_hba *hba = shost_priv(sdev->host); 1479 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); 1480 int ret; 1481 1482 down(&hba->host_sem); 1483 if (!ufshcd_is_user_access_allowed(hba)) { 1484 ret = -EBUSY; 1485 goto out; 1486 } 1487 1488 ufshcd_rpm_get_sync(hba); 1489 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 1490 QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value); 1491 ufshcd_rpm_put_sync(hba); 1492 if (ret) { 1493 ret = -EINVAL; 1494 goto out; 1495 } 1496 1497 ret = sysfs_emit(buf, "0x%08X\n", value); 1498 1499 out: 1500 up(&hba->host_sem); 1501 return ret; 1502 } 1503 static DEVICE_ATTR_RO(dyn_cap_needed_attribute); 1504 1505 static struct attribute *ufs_sysfs_lun_attributes[] = { 1506 &dev_attr_dyn_cap_needed_attribute.attr, 1507 NULL, 1508 }; 1509 1510 const struct attribute_group ufs_sysfs_lun_attributes_group = { 1511 .attrs = ufs_sysfs_lun_attributes, 1512 }; 1513 1514 void ufs_sysfs_add_nodes(struct device *dev) 1515 { 1516 int ret; 1517 1518 ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups); 1519 if (ret) 1520 dev_err(dev, 1521 "%s: sysfs groups creation failed (err = %d)\n", 1522 __func__, ret); 1523 } 1524 1525 void ufs_sysfs_remove_nodes(struct device *dev) 1526 { 1527 sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups); 1528 } 1529