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 <linux/unaligned.h> 8 #include <linux/string_choices.h> 9 10 #include <ufs/ufs.h> 11 #include <ufs/unipro.h> 12 #include "ufs-sysfs.h" 13 #include "ufshcd-priv.h" 14 15 static const char *ufs_pa_pwr_mode_to_string(enum ufs_pa_pwr_mode mode) 16 { 17 switch (mode) { 18 case FAST_MODE: return "FAST_MODE"; 19 case SLOW_MODE: return "SLOW_MODE"; 20 case FASTAUTO_MODE: return "FASTAUTO_MODE"; 21 case SLOWAUTO_MODE: return "SLOWAUTO_MODE"; 22 default: return "UNKNOWN"; 23 } 24 } 25 26 static const char *ufs_hs_gear_rate_to_string(enum ufs_hs_gear_rate rate) 27 { 28 switch (rate) { 29 case PA_HS_MODE_A: return "HS_RATE_A"; 30 case PA_HS_MODE_B: return "HS_RATE_B"; 31 default: return "UNKNOWN"; 32 } 33 } 34 35 static const char *ufs_pwm_gear_to_string(enum ufs_pwm_gear_tag gear) 36 { 37 switch (gear) { 38 case UFS_PWM_G1: return "PWM_GEAR1"; 39 case UFS_PWM_G2: return "PWM_GEAR2"; 40 case UFS_PWM_G3: return "PWM_GEAR3"; 41 case UFS_PWM_G4: return "PWM_GEAR4"; 42 case UFS_PWM_G5: return "PWM_GEAR5"; 43 case UFS_PWM_G6: return "PWM_GEAR6"; 44 case UFS_PWM_G7: return "PWM_GEAR7"; 45 default: return "UNKNOWN"; 46 } 47 } 48 49 static const char *ufs_hs_gear_to_string(enum ufs_hs_gear_tag gear) 50 { 51 switch (gear) { 52 case UFS_HS_G1: return "HS_GEAR1"; 53 case UFS_HS_G2: return "HS_GEAR2"; 54 case UFS_HS_G3: return "HS_GEAR3"; 55 case UFS_HS_G4: return "HS_GEAR4"; 56 case UFS_HS_G5: return "HS_GEAR5"; 57 default: return "UNKNOWN"; 58 } 59 } 60 61 static const char *ufs_wb_resize_hint_to_string(enum wb_resize_hint hint) 62 { 63 switch (hint) { 64 case WB_RESIZE_HINT_KEEP: 65 return "keep"; 66 case WB_RESIZE_HINT_DECREASE: 67 return "decrease"; 68 case WB_RESIZE_HINT_INCREASE: 69 return "increase"; 70 default: 71 return "unknown"; 72 } 73 } 74 75 static const char *ufs_wb_resize_status_to_string(enum wb_resize_status status) 76 { 77 switch (status) { 78 case WB_RESIZE_STATUS_IDLE: 79 return "idle"; 80 case WB_RESIZE_STATUS_IN_PROGRESS: 81 return "in_progress"; 82 case WB_RESIZE_STATUS_COMPLETE_SUCCESS: 83 return "complete_success"; 84 case WB_RESIZE_STATUS_GENERAL_FAILURE: 85 return "general_failure"; 86 default: 87 return "unknown"; 88 } 89 } 90 91 static const char * const ufs_hid_states[] = { 92 [HID_IDLE] = "idle", 93 [ANALYSIS_IN_PROGRESS] = "analysis_in_progress", 94 [DEFRAG_REQUIRED] = "defrag_required", 95 [DEFRAG_IN_PROGRESS] = "defrag_in_progress", 96 [DEFRAG_COMPLETED] = "defrag_completed", 97 [DEFRAG_NOT_REQUIRED] = "defrag_not_required", 98 }; 99 100 static const char *ufs_hid_state_to_string(enum ufs_hid_state state) 101 { 102 if (state < NUM_UFS_HID_STATES) 103 return ufs_hid_states[state]; 104 105 return "unknown"; 106 } 107 108 static const char *ufshcd_uic_link_state_to_string( 109 enum uic_link_state state) 110 { 111 switch (state) { 112 case UIC_LINK_OFF_STATE: return "OFF"; 113 case UIC_LINK_ACTIVE_STATE: return "ACTIVE"; 114 case UIC_LINK_HIBERN8_STATE: return "HIBERN8"; 115 case UIC_LINK_BROKEN_STATE: return "BROKEN"; 116 default: return "UNKNOWN"; 117 } 118 } 119 120 static const char *ufshcd_ufs_dev_pwr_mode_to_string( 121 enum ufs_dev_pwr_mode state) 122 { 123 switch (state) { 124 case UFS_ACTIVE_PWR_MODE: return "ACTIVE"; 125 case UFS_SLEEP_PWR_MODE: return "SLEEP"; 126 case UFS_POWERDOWN_PWR_MODE: return "POWERDOWN"; 127 case UFS_DEEPSLEEP_PWR_MODE: return "DEEPSLEEP"; 128 default: return "UNKNOWN"; 129 } 130 } 131 132 static inline ssize_t ufs_sysfs_pm_lvl_store(struct device *dev, 133 struct device_attribute *attr, 134 const char *buf, size_t count, 135 bool rpm) 136 { 137 struct ufs_hba *hba = dev_get_drvdata(dev); 138 struct ufs_dev_info *dev_info = &hba->dev_info; 139 unsigned long flags, value; 140 141 if (kstrtoul(buf, 0, &value)) 142 return -EINVAL; 143 144 if (value >= UFS_PM_LVL_MAX || value < hba->pm_lvl_min) 145 return -EINVAL; 146 147 if (ufs_pm_lvl_states[value].dev_state == UFS_DEEPSLEEP_PWR_MODE && 148 (!(hba->caps & UFSHCD_CAP_DEEPSLEEP) || 149 !(dev_info->wspecversion >= 0x310))) 150 return -EINVAL; 151 152 spin_lock_irqsave(hba->host->host_lock, flags); 153 if (rpm) 154 hba->rpm_lvl = value; 155 else 156 hba->spm_lvl = value; 157 spin_unlock_irqrestore(hba->host->host_lock, flags); 158 return count; 159 } 160 161 static ssize_t rpm_lvl_show(struct device *dev, 162 struct device_attribute *attr, char *buf) 163 { 164 struct ufs_hba *hba = dev_get_drvdata(dev); 165 166 return sysfs_emit(buf, "%d\n", hba->rpm_lvl); 167 } 168 169 static ssize_t rpm_lvl_store(struct device *dev, 170 struct device_attribute *attr, const char *buf, size_t count) 171 { 172 return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, true); 173 } 174 175 static ssize_t rpm_target_dev_state_show(struct device *dev, 176 struct device_attribute *attr, char *buf) 177 { 178 struct ufs_hba *hba = dev_get_drvdata(dev); 179 180 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string( 181 ufs_pm_lvl_states[hba->rpm_lvl].dev_state)); 182 } 183 184 static ssize_t rpm_target_link_state_show(struct device *dev, 185 struct device_attribute *attr, char *buf) 186 { 187 struct ufs_hba *hba = dev_get_drvdata(dev); 188 189 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string( 190 ufs_pm_lvl_states[hba->rpm_lvl].link_state)); 191 } 192 193 static ssize_t spm_lvl_show(struct device *dev, 194 struct device_attribute *attr, char *buf) 195 { 196 struct ufs_hba *hba = dev_get_drvdata(dev); 197 198 return sysfs_emit(buf, "%d\n", hba->spm_lvl); 199 } 200 201 static ssize_t spm_lvl_store(struct device *dev, 202 struct device_attribute *attr, const char *buf, size_t count) 203 { 204 return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, false); 205 } 206 207 static ssize_t spm_target_dev_state_show(struct device *dev, 208 struct device_attribute *attr, char *buf) 209 { 210 struct ufs_hba *hba = dev_get_drvdata(dev); 211 212 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string( 213 ufs_pm_lvl_states[hba->spm_lvl].dev_state)); 214 } 215 216 static ssize_t spm_target_link_state_show(struct device *dev, 217 struct device_attribute *attr, char *buf) 218 { 219 struct ufs_hba *hba = dev_get_drvdata(dev); 220 221 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string( 222 ufs_pm_lvl_states[hba->spm_lvl].link_state)); 223 } 224 225 /* Convert Auto-Hibernate Idle Timer register value to microseconds */ 226 static int ufshcd_ahit_to_us(u32 ahit) 227 { 228 int timer = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, ahit); 229 int scale = FIELD_GET(UFSHCI_AHIBERN8_SCALE_MASK, ahit); 230 231 for (; scale > 0; --scale) 232 timer *= UFSHCI_AHIBERN8_SCALE_FACTOR; 233 234 return timer; 235 } 236 237 /* Convert microseconds to Auto-Hibernate Idle Timer register value */ 238 u32 ufshcd_us_to_ahit(unsigned int timer) 239 { 240 unsigned int scale; 241 242 for (scale = 0; timer > UFSHCI_AHIBERN8_TIMER_MASK; ++scale) 243 timer /= UFSHCI_AHIBERN8_SCALE_FACTOR; 244 245 return FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, timer) | 246 FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, scale); 247 } 248 EXPORT_SYMBOL_GPL(ufshcd_us_to_ahit); 249 250 static int ufshcd_read_hci_reg(struct ufs_hba *hba, u32 *val, unsigned int reg) 251 { 252 down(&hba->host_sem); 253 if (!ufshcd_is_user_access_allowed(hba)) { 254 up(&hba->host_sem); 255 return -EBUSY; 256 } 257 258 ufshcd_rpm_get_sync(hba); 259 ufshcd_hold(hba); 260 *val = ufshcd_readl(hba, reg); 261 ufshcd_release(hba); 262 ufshcd_rpm_put_sync(hba); 263 264 up(&hba->host_sem); 265 return 0; 266 } 267 268 static ssize_t auto_hibern8_show(struct device *dev, 269 struct device_attribute *attr, char *buf) 270 { 271 u32 ahit; 272 int ret; 273 struct ufs_hba *hba = dev_get_drvdata(dev); 274 275 if (!ufshcd_is_auto_hibern8_supported(hba)) 276 return -EOPNOTSUPP; 277 278 ret = ufshcd_read_hci_reg(hba, &ahit, REG_AUTO_HIBERNATE_IDLE_TIMER); 279 if (ret) 280 return ret; 281 282 return sysfs_emit(buf, "%d\n", ufshcd_ahit_to_us(ahit)); 283 } 284 285 static ssize_t auto_hibern8_store(struct device *dev, 286 struct device_attribute *attr, 287 const char *buf, size_t count) 288 { 289 struct ufs_hba *hba = dev_get_drvdata(dev); 290 unsigned int timer; 291 int ret = 0; 292 293 if (!ufshcd_is_auto_hibern8_supported(hba)) 294 return -EOPNOTSUPP; 295 296 if (kstrtouint(buf, 0, &timer)) 297 return -EINVAL; 298 299 if (timer > UFSHCI_AHIBERN8_MAX) 300 return -EINVAL; 301 302 down(&hba->host_sem); 303 if (!ufshcd_is_user_access_allowed(hba)) { 304 ret = -EBUSY; 305 goto out; 306 } 307 308 ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer)); 309 310 out: 311 up(&hba->host_sem); 312 return ret ? ret : count; 313 } 314 315 static ssize_t wb_on_show(struct device *dev, struct device_attribute *attr, 316 char *buf) 317 { 318 struct ufs_hba *hba = dev_get_drvdata(dev); 319 320 return sysfs_emit(buf, "%d\n", hba->dev_info.wb_enabled); 321 } 322 323 static ssize_t wb_on_store(struct device *dev, struct device_attribute *attr, 324 const char *buf, size_t count) 325 { 326 struct ufs_hba *hba = dev_get_drvdata(dev); 327 unsigned int wb_enable; 328 ssize_t res; 329 330 if (!ufshcd_is_wb_allowed(hba) || (ufshcd_is_clkscaling_supported(hba) 331 && ufshcd_enable_wb_if_scaling_up(hba))) { 332 /* 333 * If the platform supports UFSHCD_CAP_CLK_SCALING, turn WB 334 * on/off will be done while clock scaling up/down. 335 */ 336 dev_warn(dev, "It is not allowed to configure WB!\n"); 337 return -EOPNOTSUPP; 338 } 339 340 if (kstrtouint(buf, 0, &wb_enable)) 341 return -EINVAL; 342 343 if (wb_enable != 0 && wb_enable != 1) 344 return -EINVAL; 345 346 down(&hba->host_sem); 347 if (!ufshcd_is_user_access_allowed(hba)) { 348 res = -EBUSY; 349 goto out; 350 } 351 352 ufshcd_rpm_get_sync(hba); 353 res = ufshcd_wb_toggle(hba, wb_enable); 354 ufshcd_rpm_put_sync(hba); 355 out: 356 up(&hba->host_sem); 357 return res < 0 ? res : count; 358 } 359 360 static ssize_t rtc_update_ms_show(struct device *dev, struct device_attribute *attr, 361 char *buf) 362 { 363 struct ufs_hba *hba = dev_get_drvdata(dev); 364 365 return sysfs_emit(buf, "%d\n", hba->dev_info.rtc_update_period); 366 } 367 368 static ssize_t rtc_update_ms_store(struct device *dev, struct device_attribute *attr, 369 const char *buf, size_t count) 370 { 371 struct ufs_hba *hba = dev_get_drvdata(dev); 372 unsigned int ms; 373 bool resume_period_update = false; 374 375 if (kstrtouint(buf, 0, &ms)) 376 return -EINVAL; 377 378 if (!hba->dev_info.rtc_update_period && ms > 0) 379 resume_period_update = true; 380 /* Minimum and maximum update frequency should be synchronized with all UFS vendors */ 381 hba->dev_info.rtc_update_period = ms; 382 383 if (resume_period_update) 384 schedule_delayed_work(&hba->ufs_rtc_update_work, 385 msecs_to_jiffies(hba->dev_info.rtc_update_period)); 386 return count; 387 } 388 389 static ssize_t enable_wb_buf_flush_show(struct device *dev, 390 struct device_attribute *attr, 391 char *buf) 392 { 393 struct ufs_hba *hba = dev_get_drvdata(dev); 394 395 return sysfs_emit(buf, "%d\n", hba->dev_info.wb_buf_flush_enabled); 396 } 397 398 static ssize_t enable_wb_buf_flush_store(struct device *dev, 399 struct device_attribute *attr, 400 const char *buf, size_t count) 401 { 402 struct ufs_hba *hba = dev_get_drvdata(dev); 403 unsigned int enable_wb_buf_flush; 404 ssize_t res; 405 406 if (!ufshcd_is_wb_buf_flush_allowed(hba)) { 407 dev_warn(dev, "It is not allowed to configure WB buf flushing!\n"); 408 return -EOPNOTSUPP; 409 } 410 411 if (kstrtouint(buf, 0, &enable_wb_buf_flush)) 412 return -EINVAL; 413 414 if (enable_wb_buf_flush != 0 && enable_wb_buf_flush != 1) 415 return -EINVAL; 416 417 down(&hba->host_sem); 418 if (!ufshcd_is_user_access_allowed(hba)) { 419 res = -EBUSY; 420 goto out; 421 } 422 423 ufshcd_rpm_get_sync(hba); 424 res = ufshcd_wb_toggle_buf_flush(hba, enable_wb_buf_flush); 425 ufshcd_rpm_put_sync(hba); 426 427 out: 428 up(&hba->host_sem); 429 return res < 0 ? res : count; 430 } 431 432 static ssize_t wb_flush_threshold_show(struct device *dev, 433 struct device_attribute *attr, 434 char *buf) 435 { 436 struct ufs_hba *hba = dev_get_drvdata(dev); 437 438 return sysfs_emit(buf, "%u\n", hba->vps->wb_flush_threshold); 439 } 440 441 static ssize_t wb_flush_threshold_store(struct device *dev, 442 struct device_attribute *attr, 443 const char *buf, size_t count) 444 { 445 struct ufs_hba *hba = dev_get_drvdata(dev); 446 unsigned int wb_flush_threshold; 447 448 if (kstrtouint(buf, 0, &wb_flush_threshold)) 449 return -EINVAL; 450 451 /* The range of values for wb_flush_threshold is (0,10] */ 452 if (wb_flush_threshold > UFS_WB_BUF_REMAIN_PERCENT(100) || 453 wb_flush_threshold == 0) { 454 dev_err(dev, "The value of wb_flush_threshold is invalid!\n"); 455 return -EINVAL; 456 } 457 458 hba->vps->wb_flush_threshold = wb_flush_threshold; 459 460 return count; 461 } 462 463 static const char * const wb_resize_en_mode[] = { 464 [WB_RESIZE_EN_IDLE] = "idle", 465 [WB_RESIZE_EN_DECREASE] = "decrease", 466 [WB_RESIZE_EN_INCREASE] = "increase", 467 }; 468 469 static ssize_t wb_resize_enable_store(struct device *dev, 470 struct device_attribute *attr, 471 const char *buf, size_t count) 472 { 473 struct ufs_hba *hba = dev_get_drvdata(dev); 474 int mode; 475 ssize_t res; 476 477 if (!ufshcd_is_wb_allowed(hba) || !hba->dev_info.wb_enabled 478 || !hba->dev_info.b_presrv_uspc_en 479 || !(hba->dev_info.ext_wb_sup & UFS_DEV_WB_BUF_RESIZE)) 480 return -EOPNOTSUPP; 481 482 mode = sysfs_match_string(wb_resize_en_mode, buf); 483 if (mode < 0) 484 return -EINVAL; 485 486 down(&hba->host_sem); 487 if (!ufshcd_is_user_access_allowed(hba)) { 488 res = -EBUSY; 489 goto out; 490 } 491 492 ufshcd_rpm_get_sync(hba); 493 res = ufshcd_wb_set_resize_en(hba, mode); 494 ufshcd_rpm_put_sync(hba); 495 496 out: 497 up(&hba->host_sem); 498 return res < 0 ? res : count; 499 } 500 501 /** 502 * pm_qos_enable_show - sysfs handler to show pm qos enable value 503 * @dev: device associated with the UFS controller 504 * @attr: sysfs attribute handle 505 * @buf: buffer for sysfs file 506 * 507 * Print 1 if PM QoS feature is enabled, 0 if disabled. 508 * 509 * Returns number of characters written to @buf. 510 */ 511 static ssize_t pm_qos_enable_show(struct device *dev, 512 struct device_attribute *attr, char *buf) 513 { 514 struct ufs_hba *hba = dev_get_drvdata(dev); 515 516 guard(mutex)(&hba->pm_qos_mutex); 517 518 return sysfs_emit(buf, "%d\n", hba->pm_qos_enabled); 519 } 520 521 /** 522 * pm_qos_enable_store - sysfs handler to store value 523 * @dev: device associated with the UFS controller 524 * @attr: sysfs attribute handle 525 * @buf: buffer for sysfs file 526 * @count: stores buffer characters count 527 * 528 * Input 0 to disable PM QoS and 1 value to enable. 529 * Default state: 1 530 * 531 * Return: number of characters written to @buf on success, < 0 upon failure. 532 */ 533 static ssize_t pm_qos_enable_store(struct device *dev, 534 struct device_attribute *attr, const char *buf, size_t count) 535 { 536 struct ufs_hba *hba = dev_get_drvdata(dev); 537 bool value; 538 539 if (kstrtobool(buf, &value)) 540 return -EINVAL; 541 542 if (value) 543 ufshcd_pm_qos_init(hba); 544 else 545 ufshcd_pm_qos_exit(hba); 546 547 return count; 548 } 549 550 static ssize_t critical_health_show(struct device *dev, 551 struct device_attribute *attr, char *buf) 552 { 553 struct ufs_hba *hba = dev_get_drvdata(dev); 554 555 return sysfs_emit(buf, "%d\n", hba->critical_health_count); 556 } 557 558 static ssize_t device_lvl_exception_count_show(struct device *dev, 559 struct device_attribute *attr, 560 char *buf) 561 { 562 struct ufs_hba *hba = dev_get_drvdata(dev); 563 564 if (hba->dev_info.wspecversion < 0x410) 565 return -EOPNOTSUPP; 566 567 return sysfs_emit(buf, "%u\n", atomic_read(&hba->dev_lvl_exception_count)); 568 } 569 570 static ssize_t device_lvl_exception_count_store(struct device *dev, 571 struct device_attribute *attr, 572 const char *buf, size_t count) 573 { 574 struct ufs_hba *hba = dev_get_drvdata(dev); 575 unsigned int value; 576 577 if (kstrtouint(buf, 0, &value)) 578 return -EINVAL; 579 580 /* the only supported usecase is to reset the dev_lvl_exception_count */ 581 if (value) 582 return -EINVAL; 583 584 atomic_set(&hba->dev_lvl_exception_count, 0); 585 586 return count; 587 } 588 589 static ssize_t device_lvl_exception_id_show(struct device *dev, 590 struct device_attribute *attr, 591 char *buf) 592 { 593 struct ufs_hba *hba = dev_get_drvdata(dev); 594 u64 exception_id; 595 int err; 596 597 if (hba->dev_info.wspecversion < 0x410) 598 return -EOPNOTSUPP; 599 600 ufshcd_rpm_get_sync(hba); 601 err = ufshcd_query_attr_qword(hba, UPIU_QUERY_OPCODE_READ_ATTR, 602 QUERY_ATTR_IDN_DEV_LVL_EXCEPTION_ID, 603 0, 0, &exception_id); 604 ufshcd_rpm_put_sync(hba); 605 606 if (err) 607 return err; 608 609 hba->dev_lvl_exception_id = exception_id; 610 return sysfs_emit(buf, "%llu\n", exception_id); 611 } 612 613 static ssize_t dme_qos_notification_show(struct device *dev, 614 struct device_attribute *attr, 615 char *buf) 616 { 617 struct ufs_hba *hba = dev_get_drvdata(dev); 618 619 return sysfs_emit(buf, "0x%x\n", atomic_read(&hba->dme_qos_notification)); 620 } 621 622 static ssize_t dme_qos_notification_store(struct device *dev, 623 struct device_attribute *attr, 624 const char *buf, size_t count) 625 { 626 struct ufs_hba *hba = dev_get_drvdata(dev); 627 unsigned int value; 628 629 if (kstrtouint(buf, 0, &value)) 630 return -EINVAL; 631 632 /* the only supported usecase is to reset the dme_qos_notification */ 633 if (value) 634 return -EINVAL; 635 636 atomic_set(&hba->dme_qos_notification, 0); 637 638 return count; 639 } 640 641 static DEVICE_ATTR_RW(rpm_lvl); 642 static DEVICE_ATTR_RO(rpm_target_dev_state); 643 static DEVICE_ATTR_RO(rpm_target_link_state); 644 static DEVICE_ATTR_RW(spm_lvl); 645 static DEVICE_ATTR_RO(spm_target_dev_state); 646 static DEVICE_ATTR_RO(spm_target_link_state); 647 static DEVICE_ATTR_RW(auto_hibern8); 648 static DEVICE_ATTR_RW(wb_on); 649 static DEVICE_ATTR_RW(enable_wb_buf_flush); 650 static DEVICE_ATTR_RW(wb_flush_threshold); 651 static DEVICE_ATTR_WO(wb_resize_enable); 652 static DEVICE_ATTR_RW(rtc_update_ms); 653 static DEVICE_ATTR_RW(pm_qos_enable); 654 static DEVICE_ATTR_RO(critical_health); 655 static DEVICE_ATTR_RW(device_lvl_exception_count); 656 static DEVICE_ATTR_RO(device_lvl_exception_id); 657 static DEVICE_ATTR_RW(dme_qos_notification); 658 659 static struct attribute *ufs_sysfs_ufshcd_attrs[] = { 660 &dev_attr_rpm_lvl.attr, 661 &dev_attr_rpm_target_dev_state.attr, 662 &dev_attr_rpm_target_link_state.attr, 663 &dev_attr_spm_lvl.attr, 664 &dev_attr_spm_target_dev_state.attr, 665 &dev_attr_spm_target_link_state.attr, 666 &dev_attr_auto_hibern8.attr, 667 &dev_attr_wb_on.attr, 668 &dev_attr_enable_wb_buf_flush.attr, 669 &dev_attr_wb_flush_threshold.attr, 670 &dev_attr_wb_resize_enable.attr, 671 &dev_attr_rtc_update_ms.attr, 672 &dev_attr_pm_qos_enable.attr, 673 &dev_attr_critical_health.attr, 674 &dev_attr_device_lvl_exception_count.attr, 675 &dev_attr_device_lvl_exception_id.attr, 676 &dev_attr_dme_qos_notification.attr, 677 NULL 678 }; 679 680 static const struct attribute_group ufs_sysfs_default_group = { 681 .attrs = ufs_sysfs_ufshcd_attrs, 682 }; 683 684 static ssize_t clock_scaling_show(struct device *dev, struct device_attribute *attr, 685 char *buf) 686 { 687 struct ufs_hba *hba = dev_get_drvdata(dev); 688 689 return sysfs_emit(buf, "%d\n", ufshcd_is_clkscaling_supported(hba)); 690 } 691 692 static ssize_t write_booster_show(struct device *dev, struct device_attribute *attr, 693 char *buf) 694 { 695 struct ufs_hba *hba = dev_get_drvdata(dev); 696 697 return sysfs_emit(buf, "%d\n", ufshcd_is_wb_allowed(hba)); 698 } 699 700 static DEVICE_ATTR_RO(clock_scaling); 701 static DEVICE_ATTR_RO(write_booster); 702 703 /* 704 * See Documentation/ABI/testing/sysfs-driver-ufs for the semantics of this 705 * group. 706 */ 707 static struct attribute *ufs_sysfs_capabilities_attrs[] = { 708 &dev_attr_clock_scaling.attr, 709 &dev_attr_write_booster.attr, 710 NULL 711 }; 712 713 static const struct attribute_group ufs_sysfs_capabilities_group = { 714 .name = "capabilities", 715 .attrs = ufs_sysfs_capabilities_attrs, 716 }; 717 718 static ssize_t version_show(struct device *dev, 719 struct device_attribute *attr, char *buf) 720 { 721 struct ufs_hba *hba = dev_get_drvdata(dev); 722 723 return sysfs_emit(buf, "0x%x\n", hba->ufs_version); 724 } 725 726 static ssize_t product_id_show(struct device *dev, 727 struct device_attribute *attr, char *buf) 728 { 729 int ret; 730 u32 val; 731 struct ufs_hba *hba = dev_get_drvdata(dev); 732 733 ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_PID); 734 if (ret) 735 return ret; 736 737 return sysfs_emit(buf, "0x%x\n", val); 738 } 739 740 static ssize_t man_id_show(struct device *dev, 741 struct device_attribute *attr, char *buf) 742 { 743 int ret; 744 u32 val; 745 struct ufs_hba *hba = dev_get_drvdata(dev); 746 747 ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_MID); 748 if (ret) 749 return ret; 750 751 return sysfs_emit(buf, "0x%x\n", val); 752 } 753 754 static DEVICE_ATTR_RO(version); 755 static DEVICE_ATTR_RO(product_id); 756 static DEVICE_ATTR_RO(man_id); 757 758 static struct attribute *ufs_sysfs_ufshci_cap_attrs[] = { 759 &dev_attr_version.attr, 760 &dev_attr_product_id.attr, 761 &dev_attr_man_id.attr, 762 NULL 763 }; 764 765 static const struct attribute_group ufs_sysfs_ufshci_group = { 766 .name = "ufshci_capabilities", 767 .attrs = ufs_sysfs_ufshci_cap_attrs, 768 }; 769 770 static ssize_t monitor_enable_show(struct device *dev, 771 struct device_attribute *attr, char *buf) 772 { 773 struct ufs_hba *hba = dev_get_drvdata(dev); 774 775 return sysfs_emit(buf, "%d\n", hba->monitor.enabled); 776 } 777 778 static ssize_t monitor_enable_store(struct device *dev, 779 struct device_attribute *attr, 780 const char *buf, size_t count) 781 { 782 struct ufs_hba *hba = dev_get_drvdata(dev); 783 unsigned long value, flags; 784 785 if (kstrtoul(buf, 0, &value)) 786 return -EINVAL; 787 788 value = !!value; 789 spin_lock_irqsave(hba->host->host_lock, flags); 790 if (value == hba->monitor.enabled) 791 goto out_unlock; 792 793 if (!value) { 794 memset(&hba->monitor, 0, sizeof(hba->monitor)); 795 } else { 796 hba->monitor.enabled = true; 797 hba->monitor.enabled_ts = ktime_get(); 798 } 799 800 out_unlock: 801 spin_unlock_irqrestore(hba->host->host_lock, flags); 802 return count; 803 } 804 805 static ssize_t monitor_chunk_size_show(struct device *dev, 806 struct device_attribute *attr, char *buf) 807 { 808 struct ufs_hba *hba = dev_get_drvdata(dev); 809 810 return sysfs_emit(buf, "%lu\n", hba->monitor.chunk_size); 811 } 812 813 static ssize_t monitor_chunk_size_store(struct device *dev, 814 struct device_attribute *attr, 815 const char *buf, size_t count) 816 { 817 struct ufs_hba *hba = dev_get_drvdata(dev); 818 unsigned long value, flags; 819 820 if (kstrtoul(buf, 0, &value)) 821 return -EINVAL; 822 823 spin_lock_irqsave(hba->host->host_lock, flags); 824 /* Only allow chunk size change when monitor is disabled */ 825 if (!hba->monitor.enabled) 826 hba->monitor.chunk_size = value; 827 spin_unlock_irqrestore(hba->host->host_lock, flags); 828 return count; 829 } 830 831 static ssize_t read_total_sectors_show(struct device *dev, 832 struct device_attribute *attr, char *buf) 833 { 834 struct ufs_hba *hba = dev_get_drvdata(dev); 835 836 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[READ]); 837 } 838 839 static ssize_t read_total_busy_show(struct device *dev, 840 struct device_attribute *attr, char *buf) 841 { 842 struct ufs_hba *hba = dev_get_drvdata(dev); 843 844 return sysfs_emit(buf, "%llu\n", 845 ktime_to_us(hba->monitor.total_busy[READ])); 846 } 847 848 static ssize_t read_nr_requests_show(struct device *dev, 849 struct device_attribute *attr, char *buf) 850 { 851 struct ufs_hba *hba = dev_get_drvdata(dev); 852 853 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[READ]); 854 } 855 856 static ssize_t read_req_latency_avg_show(struct device *dev, 857 struct device_attribute *attr, 858 char *buf) 859 { 860 struct ufs_hba *hba = dev_get_drvdata(dev); 861 struct ufs_hba_monitor *m = &hba->monitor; 862 863 if (!m->nr_req[READ]) 864 return sysfs_emit(buf, "0\n"); 865 866 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[READ]), 867 m->nr_req[READ])); 868 } 869 870 static ssize_t read_req_latency_max_show(struct device *dev, 871 struct device_attribute *attr, 872 char *buf) 873 { 874 struct ufs_hba *hba = dev_get_drvdata(dev); 875 876 return sysfs_emit(buf, "%llu\n", 877 ktime_to_us(hba->monitor.lat_max[READ])); 878 } 879 880 static ssize_t read_req_latency_min_show(struct device *dev, 881 struct device_attribute *attr, 882 char *buf) 883 { 884 struct ufs_hba *hba = dev_get_drvdata(dev); 885 886 return sysfs_emit(buf, "%llu\n", 887 ktime_to_us(hba->monitor.lat_min[READ])); 888 } 889 890 static ssize_t read_req_latency_sum_show(struct device *dev, 891 struct device_attribute *attr, 892 char *buf) 893 { 894 struct ufs_hba *hba = dev_get_drvdata(dev); 895 896 return sysfs_emit(buf, "%llu\n", 897 ktime_to_us(hba->monitor.lat_sum[READ])); 898 } 899 900 static ssize_t write_total_sectors_show(struct device *dev, 901 struct device_attribute *attr, 902 char *buf) 903 { 904 struct ufs_hba *hba = dev_get_drvdata(dev); 905 906 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[WRITE]); 907 } 908 909 static ssize_t write_total_busy_show(struct device *dev, 910 struct device_attribute *attr, char *buf) 911 { 912 struct ufs_hba *hba = dev_get_drvdata(dev); 913 914 return sysfs_emit(buf, "%llu\n", 915 ktime_to_us(hba->monitor.total_busy[WRITE])); 916 } 917 918 static ssize_t write_nr_requests_show(struct device *dev, 919 struct device_attribute *attr, char *buf) 920 { 921 struct ufs_hba *hba = dev_get_drvdata(dev); 922 923 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[WRITE]); 924 } 925 926 static ssize_t write_req_latency_avg_show(struct device *dev, 927 struct device_attribute *attr, 928 char *buf) 929 { 930 struct ufs_hba *hba = dev_get_drvdata(dev); 931 struct ufs_hba_monitor *m = &hba->monitor; 932 933 if (!m->nr_req[WRITE]) 934 return sysfs_emit(buf, "0\n"); 935 936 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[WRITE]), 937 m->nr_req[WRITE])); 938 } 939 940 static ssize_t write_req_latency_max_show(struct device *dev, 941 struct device_attribute *attr, 942 char *buf) 943 { 944 struct ufs_hba *hba = dev_get_drvdata(dev); 945 946 return sysfs_emit(buf, "%llu\n", 947 ktime_to_us(hba->monitor.lat_max[WRITE])); 948 } 949 950 static ssize_t write_req_latency_min_show(struct device *dev, 951 struct device_attribute *attr, 952 char *buf) 953 { 954 struct ufs_hba *hba = dev_get_drvdata(dev); 955 956 return sysfs_emit(buf, "%llu\n", 957 ktime_to_us(hba->monitor.lat_min[WRITE])); 958 } 959 960 static ssize_t write_req_latency_sum_show(struct device *dev, 961 struct device_attribute *attr, 962 char *buf) 963 { 964 struct ufs_hba *hba = dev_get_drvdata(dev); 965 966 return sysfs_emit(buf, "%llu\n", 967 ktime_to_us(hba->monitor.lat_sum[WRITE])); 968 } 969 970 static DEVICE_ATTR_RW(monitor_enable); 971 static DEVICE_ATTR_RW(monitor_chunk_size); 972 static DEVICE_ATTR_RO(read_total_sectors); 973 static DEVICE_ATTR_RO(read_total_busy); 974 static DEVICE_ATTR_RO(read_nr_requests); 975 static DEVICE_ATTR_RO(read_req_latency_avg); 976 static DEVICE_ATTR_RO(read_req_latency_max); 977 static DEVICE_ATTR_RO(read_req_latency_min); 978 static DEVICE_ATTR_RO(read_req_latency_sum); 979 static DEVICE_ATTR_RO(write_total_sectors); 980 static DEVICE_ATTR_RO(write_total_busy); 981 static DEVICE_ATTR_RO(write_nr_requests); 982 static DEVICE_ATTR_RO(write_req_latency_avg); 983 static DEVICE_ATTR_RO(write_req_latency_max); 984 static DEVICE_ATTR_RO(write_req_latency_min); 985 static DEVICE_ATTR_RO(write_req_latency_sum); 986 987 static struct attribute *ufs_sysfs_monitor_attrs[] = { 988 &dev_attr_monitor_enable.attr, 989 &dev_attr_monitor_chunk_size.attr, 990 &dev_attr_read_total_sectors.attr, 991 &dev_attr_read_total_busy.attr, 992 &dev_attr_read_nr_requests.attr, 993 &dev_attr_read_req_latency_avg.attr, 994 &dev_attr_read_req_latency_max.attr, 995 &dev_attr_read_req_latency_min.attr, 996 &dev_attr_read_req_latency_sum.attr, 997 &dev_attr_write_total_sectors.attr, 998 &dev_attr_write_total_busy.attr, 999 &dev_attr_write_nr_requests.attr, 1000 &dev_attr_write_req_latency_avg.attr, 1001 &dev_attr_write_req_latency_max.attr, 1002 &dev_attr_write_req_latency_min.attr, 1003 &dev_attr_write_req_latency_sum.attr, 1004 NULL 1005 }; 1006 1007 static const struct attribute_group ufs_sysfs_monitor_group = { 1008 .name = "monitor", 1009 .attrs = ufs_sysfs_monitor_attrs, 1010 }; 1011 1012 static ssize_t lane_show(struct device *dev, struct device_attribute *attr, 1013 char *buf) 1014 { 1015 struct ufs_hba *hba = dev_get_drvdata(dev); 1016 1017 return sysfs_emit(buf, "%u\n", hba->pwr_info.lane_rx); 1018 } 1019 1020 static ssize_t mode_show(struct device *dev, struct device_attribute *attr, 1021 char *buf) 1022 { 1023 struct ufs_hba *hba = dev_get_drvdata(dev); 1024 1025 return sysfs_emit(buf, "%s\n", ufs_pa_pwr_mode_to_string(hba->pwr_info.pwr_rx)); 1026 } 1027 1028 static ssize_t rate_show(struct device *dev, struct device_attribute *attr, 1029 char *buf) 1030 { 1031 struct ufs_hba *hba = dev_get_drvdata(dev); 1032 1033 return sysfs_emit(buf, "%s\n", ufs_hs_gear_rate_to_string(hba->pwr_info.hs_rate)); 1034 } 1035 1036 static ssize_t gear_show(struct device *dev, struct device_attribute *attr, 1037 char *buf) 1038 { 1039 struct ufs_hba *hba = dev_get_drvdata(dev); 1040 1041 return sysfs_emit(buf, "%s\n", hba->pwr_info.hs_rate ? 1042 ufs_hs_gear_to_string(hba->pwr_info.gear_rx) : 1043 ufs_pwm_gear_to_string(hba->pwr_info.gear_rx)); 1044 } 1045 1046 static ssize_t dev_pm_show(struct device *dev, struct device_attribute *attr, 1047 char *buf) 1048 { 1049 struct ufs_hba *hba = dev_get_drvdata(dev); 1050 1051 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(hba->curr_dev_pwr_mode)); 1052 } 1053 1054 static ssize_t link_state_show(struct device *dev, 1055 struct device_attribute *attr, char *buf) 1056 { 1057 struct ufs_hba *hba = dev_get_drvdata(dev); 1058 1059 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(hba->uic_link_state)); 1060 } 1061 1062 static DEVICE_ATTR_RO(lane); 1063 static DEVICE_ATTR_RO(mode); 1064 static DEVICE_ATTR_RO(rate); 1065 static DEVICE_ATTR_RO(gear); 1066 static DEVICE_ATTR_RO(dev_pm); 1067 static DEVICE_ATTR_RO(link_state); 1068 1069 static struct attribute *ufs_power_info_attrs[] = { 1070 &dev_attr_lane.attr, 1071 &dev_attr_mode.attr, 1072 &dev_attr_rate.attr, 1073 &dev_attr_gear.attr, 1074 &dev_attr_dev_pm.attr, 1075 &dev_attr_link_state.attr, 1076 NULL 1077 }; 1078 1079 static const struct attribute_group ufs_sysfs_power_info_group = { 1080 .name = "power_info", 1081 .attrs = ufs_power_info_attrs, 1082 }; 1083 1084 static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba, 1085 enum desc_idn desc_id, 1086 u8 desc_index, 1087 u8 param_offset, 1088 u8 *sysfs_buf, 1089 u8 param_size) 1090 { 1091 u8 desc_buf[8] = {0}; 1092 int ret; 1093 1094 if (param_size > 8) 1095 return -EINVAL; 1096 1097 down(&hba->host_sem); 1098 if (!ufshcd_is_user_access_allowed(hba)) { 1099 ret = -EBUSY; 1100 goto out; 1101 } 1102 1103 ufshcd_rpm_get_sync(hba); 1104 ret = ufshcd_read_desc_param(hba, desc_id, desc_index, 1105 param_offset, desc_buf, param_size); 1106 ufshcd_rpm_put_sync(hba); 1107 if (ret) { 1108 ret = -EINVAL; 1109 goto out; 1110 } 1111 1112 switch (param_size) { 1113 case 1: 1114 ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf); 1115 break; 1116 case 2: 1117 ret = sysfs_emit(sysfs_buf, "0x%04X\n", 1118 get_unaligned_be16(desc_buf)); 1119 break; 1120 case 4: 1121 ret = sysfs_emit(sysfs_buf, "0x%08X\n", 1122 get_unaligned_be32(desc_buf)); 1123 break; 1124 case 8: 1125 ret = sysfs_emit(sysfs_buf, "0x%016llX\n", 1126 get_unaligned_be64(desc_buf)); 1127 break; 1128 } 1129 1130 out: 1131 up(&hba->host_sem); 1132 return ret; 1133 } 1134 1135 #define UFS_DESC_PARAM(_name, _puname, _duname, _size) \ 1136 static ssize_t _name##_show(struct device *dev, \ 1137 struct device_attribute *attr, char *buf) \ 1138 { \ 1139 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1140 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ 1141 0, _duname##_DESC_PARAM##_puname, buf, _size); \ 1142 } \ 1143 static DEVICE_ATTR_RO(_name) 1144 1145 #define UFS_DEVICE_DESC_PARAM(_name, _uname, _size) \ 1146 UFS_DESC_PARAM(_name, _uname, DEVICE, _size) 1147 1148 UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1); 1149 UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1); 1150 UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1); 1151 UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1); 1152 UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1); 1153 UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1); 1154 UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1); 1155 UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1); 1156 UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1); 1157 UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1); 1158 UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1); 1159 UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1); 1160 UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1); 1161 UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1); 1162 UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2); 1163 UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2); 1164 UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2); 1165 UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1); 1166 UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2); 1167 UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1); 1168 UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1); 1169 UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1); 1170 UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2); 1171 UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1); 1172 UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4); 1173 UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1); 1174 UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4); 1175 UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1); 1176 UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1); 1177 UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4); 1178 1179 static struct attribute *ufs_sysfs_device_descriptor[] = { 1180 &dev_attr_device_type.attr, 1181 &dev_attr_device_class.attr, 1182 &dev_attr_device_sub_class.attr, 1183 &dev_attr_protocol.attr, 1184 &dev_attr_number_of_luns.attr, 1185 &dev_attr_number_of_wluns.attr, 1186 &dev_attr_boot_enable.attr, 1187 &dev_attr_descriptor_access_enable.attr, 1188 &dev_attr_initial_power_mode.attr, 1189 &dev_attr_high_priority_lun.attr, 1190 &dev_attr_secure_removal_type.attr, 1191 &dev_attr_support_security_lun.attr, 1192 &dev_attr_bkops_termination_latency.attr, 1193 &dev_attr_initial_active_icc_level.attr, 1194 &dev_attr_specification_version.attr, 1195 &dev_attr_manufacturing_date.attr, 1196 &dev_attr_manufacturer_id.attr, 1197 &dev_attr_rtt_capability.attr, 1198 &dev_attr_rtc_update.attr, 1199 &dev_attr_ufs_features.attr, 1200 &dev_attr_ffu_timeout.attr, 1201 &dev_attr_queue_depth.attr, 1202 &dev_attr_device_version.attr, 1203 &dev_attr_number_of_secure_wpa.attr, 1204 &dev_attr_psa_max_data_size.attr, 1205 &dev_attr_psa_state_timeout.attr, 1206 &dev_attr_ext_feature_sup.attr, 1207 &dev_attr_wb_presv_us_en.attr, 1208 &dev_attr_wb_type.attr, 1209 &dev_attr_wb_shared_alloc_units.attr, 1210 NULL, 1211 }; 1212 1213 static const struct attribute_group ufs_sysfs_device_descriptor_group = { 1214 .name = "device_descriptor", 1215 .attrs = ufs_sysfs_device_descriptor, 1216 }; 1217 1218 #define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size) \ 1219 UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size) 1220 1221 UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2); 1222 UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2); 1223 1224 static struct attribute *ufs_sysfs_interconnect_descriptor[] = { 1225 &dev_attr_unipro_version.attr, 1226 &dev_attr_mphy_version.attr, 1227 NULL, 1228 }; 1229 1230 static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = { 1231 .name = "interconnect_descriptor", 1232 .attrs = ufs_sysfs_interconnect_descriptor, 1233 }; 1234 1235 #define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size) \ 1236 UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size) 1237 1238 UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8); 1239 UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1); 1240 UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4); 1241 UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1); 1242 UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1); 1243 UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1); 1244 UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1); 1245 UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1); 1246 UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1); 1247 UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1); 1248 UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1); 1249 UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1); 1250 UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1); 1251 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1); 1252 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1); 1253 UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1); 1254 UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2); 1255 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units, 1256 _SCM_MAX_NUM_UNITS, 4); 1257 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor, 1258 _SCM_CAP_ADJ_FCTR, 2); 1259 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units, 1260 _NPM_MAX_NUM_UNITS, 4); 1261 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor, 1262 _NPM_CAP_ADJ_FCTR, 2); 1263 UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units, 1264 _ENM1_MAX_NUM_UNITS, 4); 1265 UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor, 1266 _ENM1_CAP_ADJ_FCTR, 2); 1267 UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units, 1268 _ENM2_MAX_NUM_UNITS, 4); 1269 UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor, 1270 _ENM2_CAP_ADJ_FCTR, 2); 1271 UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units, 1272 _ENM3_MAX_NUM_UNITS, 4); 1273 UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor, 1274 _ENM3_CAP_ADJ_FCTR, 2); 1275 UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units, 1276 _ENM4_MAX_NUM_UNITS, 4); 1277 UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor, 1278 _ENM4_CAP_ADJ_FCTR, 2); 1279 UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4); 1280 UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1); 1281 UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1); 1282 UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1); 1283 UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1); 1284 1285 1286 static struct attribute *ufs_sysfs_geometry_descriptor[] = { 1287 &dev_attr_raw_device_capacity.attr, 1288 &dev_attr_max_number_of_luns.attr, 1289 &dev_attr_segment_size.attr, 1290 &dev_attr_allocation_unit_size.attr, 1291 &dev_attr_min_addressable_block_size.attr, 1292 &dev_attr_optimal_read_block_size.attr, 1293 &dev_attr_optimal_write_block_size.attr, 1294 &dev_attr_max_in_buffer_size.attr, 1295 &dev_attr_max_out_buffer_size.attr, 1296 &dev_attr_rpmb_rw_size.attr, 1297 &dev_attr_dyn_capacity_resource_policy.attr, 1298 &dev_attr_data_ordering.attr, 1299 &dev_attr_max_number_of_contexts.attr, 1300 &dev_attr_sys_data_tag_unit_size.attr, 1301 &dev_attr_sys_data_tag_resource_size.attr, 1302 &dev_attr_secure_removal_types.attr, 1303 &dev_attr_memory_types.attr, 1304 &dev_attr_sys_code_memory_max_alloc_units.attr, 1305 &dev_attr_sys_code_memory_capacity_adjustment_factor.attr, 1306 &dev_attr_non_persist_memory_max_alloc_units.attr, 1307 &dev_attr_non_persist_memory_capacity_adjustment_factor.attr, 1308 &dev_attr_enh1_memory_max_alloc_units.attr, 1309 &dev_attr_enh1_memory_capacity_adjustment_factor.attr, 1310 &dev_attr_enh2_memory_max_alloc_units.attr, 1311 &dev_attr_enh2_memory_capacity_adjustment_factor.attr, 1312 &dev_attr_enh3_memory_max_alloc_units.attr, 1313 &dev_attr_enh3_memory_capacity_adjustment_factor.attr, 1314 &dev_attr_enh4_memory_max_alloc_units.attr, 1315 &dev_attr_enh4_memory_capacity_adjustment_factor.attr, 1316 &dev_attr_wb_max_alloc_units.attr, 1317 &dev_attr_wb_max_wb_luns.attr, 1318 &dev_attr_wb_buff_cap_adj.attr, 1319 &dev_attr_wb_sup_red_type.attr, 1320 &dev_attr_wb_sup_wb_type.attr, 1321 NULL, 1322 }; 1323 1324 static const struct attribute_group ufs_sysfs_geometry_descriptor_group = { 1325 .name = "geometry_descriptor", 1326 .attrs = ufs_sysfs_geometry_descriptor, 1327 }; 1328 1329 #define UFS_HEALTH_DESC_PARAM(_name, _uname, _size) \ 1330 UFS_DESC_PARAM(_name, _uname, HEALTH, _size) 1331 1332 UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1); 1333 UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1); 1334 UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1); 1335 1336 static struct attribute *ufs_sysfs_health_descriptor[] = { 1337 &dev_attr_eol_info.attr, 1338 &dev_attr_life_time_estimation_a.attr, 1339 &dev_attr_life_time_estimation_b.attr, 1340 NULL, 1341 }; 1342 1343 static const struct attribute_group ufs_sysfs_health_descriptor_group = { 1344 .name = "health_descriptor", 1345 .attrs = ufs_sysfs_health_descriptor, 1346 }; 1347 1348 #define UFS_POWER_DESC_PARAM(_name, _uname, _index) \ 1349 static ssize_t _name##_index##_show(struct device *dev, \ 1350 struct device_attribute *attr, char *buf) \ 1351 { \ 1352 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1353 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, \ 1354 PWR_DESC##_uname##_0 + _index * 2, buf, 2); \ 1355 } \ 1356 static DEVICE_ATTR_RO(_name##_index) 1357 1358 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0); 1359 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1); 1360 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2); 1361 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3); 1362 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4); 1363 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5); 1364 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6); 1365 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7); 1366 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8); 1367 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9); 1368 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10); 1369 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11); 1370 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12); 1371 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13); 1372 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14); 1373 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15); 1374 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0); 1375 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1); 1376 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2); 1377 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3); 1378 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4); 1379 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5); 1380 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6); 1381 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7); 1382 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8); 1383 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9); 1384 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10); 1385 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11); 1386 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12); 1387 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13); 1388 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14); 1389 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15); 1390 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0); 1391 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1); 1392 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2); 1393 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3); 1394 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4); 1395 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5); 1396 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6); 1397 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7); 1398 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8); 1399 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9); 1400 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10); 1401 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11); 1402 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12); 1403 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13); 1404 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14); 1405 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15); 1406 1407 static struct attribute *ufs_sysfs_power_descriptor[] = { 1408 &dev_attr_active_icc_levels_vcc0.attr, 1409 &dev_attr_active_icc_levels_vcc1.attr, 1410 &dev_attr_active_icc_levels_vcc2.attr, 1411 &dev_attr_active_icc_levels_vcc3.attr, 1412 &dev_attr_active_icc_levels_vcc4.attr, 1413 &dev_attr_active_icc_levels_vcc5.attr, 1414 &dev_attr_active_icc_levels_vcc6.attr, 1415 &dev_attr_active_icc_levels_vcc7.attr, 1416 &dev_attr_active_icc_levels_vcc8.attr, 1417 &dev_attr_active_icc_levels_vcc9.attr, 1418 &dev_attr_active_icc_levels_vcc10.attr, 1419 &dev_attr_active_icc_levels_vcc11.attr, 1420 &dev_attr_active_icc_levels_vcc12.attr, 1421 &dev_attr_active_icc_levels_vcc13.attr, 1422 &dev_attr_active_icc_levels_vcc14.attr, 1423 &dev_attr_active_icc_levels_vcc15.attr, 1424 &dev_attr_active_icc_levels_vccq0.attr, 1425 &dev_attr_active_icc_levels_vccq1.attr, 1426 &dev_attr_active_icc_levels_vccq2.attr, 1427 &dev_attr_active_icc_levels_vccq3.attr, 1428 &dev_attr_active_icc_levels_vccq4.attr, 1429 &dev_attr_active_icc_levels_vccq5.attr, 1430 &dev_attr_active_icc_levels_vccq6.attr, 1431 &dev_attr_active_icc_levels_vccq7.attr, 1432 &dev_attr_active_icc_levels_vccq8.attr, 1433 &dev_attr_active_icc_levels_vccq9.attr, 1434 &dev_attr_active_icc_levels_vccq10.attr, 1435 &dev_attr_active_icc_levels_vccq11.attr, 1436 &dev_attr_active_icc_levels_vccq12.attr, 1437 &dev_attr_active_icc_levels_vccq13.attr, 1438 &dev_attr_active_icc_levels_vccq14.attr, 1439 &dev_attr_active_icc_levels_vccq15.attr, 1440 &dev_attr_active_icc_levels_vccq20.attr, 1441 &dev_attr_active_icc_levels_vccq21.attr, 1442 &dev_attr_active_icc_levels_vccq22.attr, 1443 &dev_attr_active_icc_levels_vccq23.attr, 1444 &dev_attr_active_icc_levels_vccq24.attr, 1445 &dev_attr_active_icc_levels_vccq25.attr, 1446 &dev_attr_active_icc_levels_vccq26.attr, 1447 &dev_attr_active_icc_levels_vccq27.attr, 1448 &dev_attr_active_icc_levels_vccq28.attr, 1449 &dev_attr_active_icc_levels_vccq29.attr, 1450 &dev_attr_active_icc_levels_vccq210.attr, 1451 &dev_attr_active_icc_levels_vccq211.attr, 1452 &dev_attr_active_icc_levels_vccq212.attr, 1453 &dev_attr_active_icc_levels_vccq213.attr, 1454 &dev_attr_active_icc_levels_vccq214.attr, 1455 &dev_attr_active_icc_levels_vccq215.attr, 1456 NULL, 1457 }; 1458 1459 static const struct attribute_group ufs_sysfs_power_descriptor_group = { 1460 .name = "power_descriptor", 1461 .attrs = ufs_sysfs_power_descriptor, 1462 }; 1463 1464 #define UFS_STRING_DESCRIPTOR(_name, _pname) \ 1465 static ssize_t _name##_show(struct device *dev, \ 1466 struct device_attribute *attr, char *buf) \ 1467 { \ 1468 u8 index; \ 1469 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1470 int ret; \ 1471 int desc_len = QUERY_DESC_MAX_SIZE; \ 1472 u8 *desc_buf; \ 1473 \ 1474 down(&hba->host_sem); \ 1475 if (!ufshcd_is_user_access_allowed(hba)) { \ 1476 up(&hba->host_sem); \ 1477 return -EBUSY; \ 1478 } \ 1479 desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC); \ 1480 if (!desc_buf) { \ 1481 up(&hba->host_sem); \ 1482 return -ENOMEM; \ 1483 } \ 1484 ufshcd_rpm_get_sync(hba); \ 1485 ret = ufshcd_query_descriptor_retry(hba, \ 1486 UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE, \ 1487 0, 0, desc_buf, &desc_len); \ 1488 if (ret) { \ 1489 ret = -EINVAL; \ 1490 goto out; \ 1491 } \ 1492 index = desc_buf[DEVICE_DESC_PARAM##_pname]; \ 1493 kfree(desc_buf); \ 1494 desc_buf = NULL; \ 1495 ret = ufshcd_read_string_desc(hba, index, &desc_buf, \ 1496 SD_ASCII_STD); \ 1497 if (ret < 0) \ 1498 goto out; \ 1499 ret = sysfs_emit(buf, "%s\n", desc_buf); \ 1500 out: \ 1501 ufshcd_rpm_put_sync(hba); \ 1502 kfree(desc_buf); \ 1503 up(&hba->host_sem); \ 1504 return ret; \ 1505 } \ 1506 static DEVICE_ATTR_RO(_name) 1507 1508 UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME); 1509 UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME); 1510 UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID); 1511 UFS_STRING_DESCRIPTOR(serial_number, _SN); 1512 UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV); 1513 1514 static struct attribute *ufs_sysfs_string_descriptors[] = { 1515 &dev_attr_manufacturer_name.attr, 1516 &dev_attr_product_name.attr, 1517 &dev_attr_oem_id.attr, 1518 &dev_attr_serial_number.attr, 1519 &dev_attr_product_revision.attr, 1520 NULL, 1521 }; 1522 1523 static const struct attribute_group ufs_sysfs_string_descriptors_group = { 1524 .name = "string_descriptors", 1525 .attrs = ufs_sysfs_string_descriptors, 1526 }; 1527 1528 static inline bool ufshcd_is_wb_flags(enum flag_idn idn) 1529 { 1530 return idn >= QUERY_FLAG_IDN_WB_EN && 1531 idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8; 1532 } 1533 1534 #define UFS_FLAG(_name, _uname) \ 1535 static ssize_t _name##_show(struct device *dev, \ 1536 struct device_attribute *attr, char *buf) \ 1537 { \ 1538 bool flag; \ 1539 u8 index = 0; \ 1540 int ret; \ 1541 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1542 \ 1543 down(&hba->host_sem); \ 1544 if (!ufshcd_is_user_access_allowed(hba)) { \ 1545 up(&hba->host_sem); \ 1546 return -EBUSY; \ 1547 } \ 1548 if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname)) \ 1549 index = ufshcd_wb_get_query_index(hba); \ 1550 ufshcd_rpm_get_sync(hba); \ 1551 ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \ 1552 QUERY_FLAG_IDN##_uname, index, &flag); \ 1553 ufshcd_rpm_put_sync(hba); \ 1554 if (ret) { \ 1555 ret = -EINVAL; \ 1556 goto out; \ 1557 } \ 1558 ret = sysfs_emit(buf, "%s\n", str_true_false(flag)); \ 1559 out: \ 1560 up(&hba->host_sem); \ 1561 return ret; \ 1562 } \ 1563 static DEVICE_ATTR_RO(_name) 1564 1565 UFS_FLAG(device_init, _FDEVICEINIT); 1566 UFS_FLAG(permanent_wpe, _PERMANENT_WPE); 1567 UFS_FLAG(power_on_wpe, _PWR_ON_WPE); 1568 UFS_FLAG(bkops_enable, _BKOPS_EN); 1569 UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE); 1570 UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL); 1571 UFS_FLAG(busy_rtc, _BUSY_RTC); 1572 UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE); 1573 UFS_FLAG(wb_enable, _WB_EN); 1574 UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN); 1575 UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8); 1576 1577 static struct attribute *ufs_sysfs_device_flags[] = { 1578 &dev_attr_device_init.attr, 1579 &dev_attr_permanent_wpe.attr, 1580 &dev_attr_power_on_wpe.attr, 1581 &dev_attr_bkops_enable.attr, 1582 &dev_attr_life_span_mode_enable.attr, 1583 &dev_attr_phy_resource_removal.attr, 1584 &dev_attr_busy_rtc.attr, 1585 &dev_attr_disable_fw_update.attr, 1586 &dev_attr_wb_enable.attr, 1587 &dev_attr_wb_flush_en.attr, 1588 &dev_attr_wb_flush_during_h8.attr, 1589 NULL, 1590 }; 1591 1592 static const struct attribute_group ufs_sysfs_flags_group = { 1593 .name = "flags", 1594 .attrs = ufs_sysfs_device_flags, 1595 }; 1596 1597 static ssize_t max_number_of_rtt_show(struct device *dev, 1598 struct device_attribute *attr, char *buf) 1599 { 1600 struct ufs_hba *hba = dev_get_drvdata(dev); 1601 u32 rtt; 1602 int ret; 1603 1604 down(&hba->host_sem); 1605 if (!ufshcd_is_user_access_allowed(hba)) { 1606 up(&hba->host_sem); 1607 return -EBUSY; 1608 } 1609 1610 ufshcd_rpm_get_sync(hba); 1611 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 1612 QUERY_ATTR_IDN_MAX_NUM_OF_RTT, 0, 0, &rtt); 1613 ufshcd_rpm_put_sync(hba); 1614 1615 if (ret) 1616 goto out; 1617 1618 ret = sysfs_emit(buf, "0x%08X\n", rtt); 1619 1620 out: 1621 up(&hba->host_sem); 1622 return ret; 1623 } 1624 1625 static ssize_t max_number_of_rtt_store(struct device *dev, 1626 struct device_attribute *attr, 1627 const char *buf, size_t count) 1628 { 1629 struct ufs_hba *hba = dev_get_drvdata(dev); 1630 struct ufs_dev_info *dev_info = &hba->dev_info; 1631 struct scsi_device *sdev; 1632 unsigned int memflags; 1633 unsigned int rtt; 1634 int ret; 1635 1636 if (kstrtouint(buf, 0, &rtt)) 1637 return -EINVAL; 1638 1639 if (rtt > dev_info->rtt_cap) { 1640 dev_err(dev, "rtt can be at most bDeviceRTTCap\n"); 1641 return -EINVAL; 1642 } 1643 1644 down(&hba->host_sem); 1645 if (!ufshcd_is_user_access_allowed(hba)) { 1646 ret = -EBUSY; 1647 goto out; 1648 } 1649 1650 ufshcd_rpm_get_sync(hba); 1651 1652 memflags = memalloc_noio_save(); 1653 shost_for_each_device(sdev, hba->host) 1654 blk_mq_freeze_queue_nomemsave(sdev->request_queue); 1655 1656 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, 1657 QUERY_ATTR_IDN_MAX_NUM_OF_RTT, 0, 0, &rtt); 1658 1659 shost_for_each_device(sdev, hba->host) 1660 blk_mq_unfreeze_queue_nomemrestore(sdev->request_queue); 1661 memalloc_noio_restore(memflags); 1662 1663 ufshcd_rpm_put_sync(hba); 1664 1665 out: 1666 up(&hba->host_sem); 1667 return ret < 0 ? ret : count; 1668 } 1669 1670 static DEVICE_ATTR_RW(max_number_of_rtt); 1671 1672 static inline bool ufshcd_is_wb_attrs(enum attr_idn idn) 1673 { 1674 return idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS && 1675 idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE; 1676 } 1677 1678 static inline bool ufshcd_is_qword_attr(enum attr_idn idn) 1679 { 1680 return idn == QUERY_ATTR_IDN_TIMESTAMP || 1681 idn == QUERY_ATTR_IDN_DEV_LVL_EXCEPTION_ID; 1682 } 1683 1684 static int wb_read_resize_attrs(struct ufs_hba *hba, 1685 enum attr_idn idn, u32 *attr_val) 1686 { 1687 u8 index = 0; 1688 int ret; 1689 1690 if (!ufshcd_is_wb_allowed(hba) || !hba->dev_info.wb_enabled 1691 || !hba->dev_info.b_presrv_uspc_en 1692 || !(hba->dev_info.ext_wb_sup & UFS_DEV_WB_BUF_RESIZE)) 1693 return -EOPNOTSUPP; 1694 1695 down(&hba->host_sem); 1696 if (!ufshcd_is_user_access_allowed(hba)) { 1697 up(&hba->host_sem); 1698 return -EBUSY; 1699 } 1700 1701 index = ufshcd_wb_get_query_index(hba); 1702 ufshcd_rpm_get_sync(hba); 1703 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 1704 idn, index, 0, attr_val); 1705 ufshcd_rpm_put_sync(hba); 1706 1707 up(&hba->host_sem); 1708 return ret; 1709 } 1710 1711 static ssize_t wb_resize_hint_show(struct device *dev, 1712 struct device_attribute *attr, char *buf) 1713 { 1714 struct ufs_hba *hba = dev_get_drvdata(dev); 1715 int ret; 1716 u32 value; 1717 1718 ret = wb_read_resize_attrs(hba, 1719 QUERY_ATTR_IDN_WB_BUF_RESIZE_HINT, &value); 1720 if (ret) 1721 return ret; 1722 1723 return sysfs_emit(buf, "%s\n", ufs_wb_resize_hint_to_string(value)); 1724 } 1725 1726 static DEVICE_ATTR_RO(wb_resize_hint); 1727 1728 static ssize_t wb_resize_status_show(struct device *dev, 1729 struct device_attribute *attr, char *buf) 1730 { 1731 struct ufs_hba *hba = dev_get_drvdata(dev); 1732 int ret; 1733 u32 value; 1734 1735 ret = wb_read_resize_attrs(hba, 1736 QUERY_ATTR_IDN_WB_BUF_RESIZE_STATUS, &value); 1737 if (ret) 1738 return ret; 1739 1740 return sysfs_emit(buf, "%s\n", ufs_wb_resize_status_to_string(value)); 1741 } 1742 1743 static DEVICE_ATTR_RO(wb_resize_status); 1744 1745 #define UFS_ATTRIBUTE(_name, _uname) \ 1746 static ssize_t _name##_show(struct device *dev, \ 1747 struct device_attribute *attr, char *buf) \ 1748 { \ 1749 struct ufs_hba *hba = dev_get_drvdata(dev); \ 1750 u64 qword_value; \ 1751 u32 value; \ 1752 int ret; \ 1753 u8 index = 0; \ 1754 \ 1755 down(&hba->host_sem); \ 1756 if (!ufshcd_is_user_access_allowed(hba)) { \ 1757 up(&hba->host_sem); \ 1758 return -EBUSY; \ 1759 } \ 1760 if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname)) \ 1761 index = ufshcd_wb_get_query_index(hba); \ 1762 ufshcd_rpm_get_sync(hba); \ 1763 if (ufshcd_is_qword_attr(QUERY_ATTR_IDN##_uname)) \ 1764 ret = ufshcd_query_attr_qword(hba, \ 1765 UPIU_QUERY_OPCODE_READ_ATTR, \ 1766 QUERY_ATTR_IDN##_uname, \ 1767 index, 0, &qword_value); \ 1768 else \ 1769 ret = ufshcd_query_attr(hba, \ 1770 UPIU_QUERY_OPCODE_READ_ATTR, \ 1771 QUERY_ATTR_IDN##_uname, index, 0, &value); \ 1772 ufshcd_rpm_put_sync(hba); \ 1773 if (ret) { \ 1774 ret = -EINVAL; \ 1775 goto out; \ 1776 } \ 1777 if (ufshcd_is_qword_attr(QUERY_ATTR_IDN##_uname)) \ 1778 ret = sysfs_emit(buf, "0x%016llX\n", qword_value); \ 1779 else \ 1780 ret = sysfs_emit(buf, "0x%08X\n", value); \ 1781 out: \ 1782 up(&hba->host_sem); \ 1783 return ret; \ 1784 } \ 1785 static DEVICE_ATTR_RO(_name) 1786 1787 UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN); 1788 UFS_ATTRIBUTE(current_power_mode, _POWER_MODE); 1789 UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL); 1790 UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN); 1791 UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS); 1792 UFS_ATTRIBUTE(purge_status, _PURGE_STATUS); 1793 UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN); 1794 UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT); 1795 UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ); 1796 UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK); 1797 UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL); 1798 UFS_ATTRIBUTE(exception_event_status, _EE_STATUS); 1799 UFS_ATTRIBUTE(ffu_status, _FFU_STATUS); 1800 UFS_ATTRIBUTE(psa_state, _PSA_STATE); 1801 UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE); 1802 UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS); 1803 UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE); 1804 UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST); 1805 UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE); 1806 1807 1808 static struct attribute *ufs_sysfs_attributes[] = { 1809 &dev_attr_boot_lun_enabled.attr, 1810 &dev_attr_current_power_mode.attr, 1811 &dev_attr_active_icc_level.attr, 1812 &dev_attr_ooo_data_enabled.attr, 1813 &dev_attr_bkops_status.attr, 1814 &dev_attr_purge_status.attr, 1815 &dev_attr_max_data_in_size.attr, 1816 &dev_attr_max_data_out_size.attr, 1817 &dev_attr_reference_clock_frequency.attr, 1818 &dev_attr_configuration_descriptor_lock.attr, 1819 &dev_attr_max_number_of_rtt.attr, 1820 &dev_attr_exception_event_control.attr, 1821 &dev_attr_exception_event_status.attr, 1822 &dev_attr_ffu_status.attr, 1823 &dev_attr_psa_state.attr, 1824 &dev_attr_psa_data_size.attr, 1825 &dev_attr_wb_flush_status.attr, 1826 &dev_attr_wb_avail_buf.attr, 1827 &dev_attr_wb_life_time_est.attr, 1828 &dev_attr_wb_cur_buf.attr, 1829 &dev_attr_wb_resize_hint.attr, 1830 &dev_attr_wb_resize_status.attr, 1831 NULL, 1832 }; 1833 1834 static const struct attribute_group ufs_sysfs_attributes_group = { 1835 .name = "attributes", 1836 .attrs = ufs_sysfs_attributes, 1837 }; 1838 1839 static int hid_query_attr(struct ufs_hba *hba, enum query_opcode opcode, 1840 enum attr_idn idn, u32 *attr_val) 1841 { 1842 int ret; 1843 1844 down(&hba->host_sem); 1845 if (!ufshcd_is_user_access_allowed(hba)) { 1846 up(&hba->host_sem); 1847 return -EBUSY; 1848 } 1849 1850 ufshcd_rpm_get_sync(hba); 1851 ret = ufshcd_query_attr(hba, opcode, idn, 0, 0, attr_val); 1852 ufshcd_rpm_put_sync(hba); 1853 1854 up(&hba->host_sem); 1855 return ret; 1856 } 1857 1858 static ssize_t analysis_trigger_store(struct device *dev, 1859 struct device_attribute *attr, const char *buf, size_t count) 1860 { 1861 struct ufs_hba *hba = dev_get_drvdata(dev); 1862 int mode; 1863 int ret; 1864 1865 if (sysfs_streq(buf, "enable")) 1866 mode = HID_ANALYSIS_ENABLE; 1867 else if (sysfs_streq(buf, "disable")) 1868 mode = HID_ANALYSIS_AND_DEFRAG_DISABLE; 1869 else 1870 return -EINVAL; 1871 1872 ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, 1873 QUERY_ATTR_IDN_HID_DEFRAG_OPERATION, &mode); 1874 1875 return ret < 0 ? ret : count; 1876 } 1877 1878 static DEVICE_ATTR_WO(analysis_trigger); 1879 1880 static ssize_t defrag_trigger_store(struct device *dev, 1881 struct device_attribute *attr, const char *buf, size_t count) 1882 { 1883 struct ufs_hba *hba = dev_get_drvdata(dev); 1884 int mode; 1885 int ret; 1886 1887 if (sysfs_streq(buf, "enable")) 1888 mode = HID_ANALYSIS_AND_DEFRAG_ENABLE; 1889 else if (sysfs_streq(buf, "disable")) 1890 mode = HID_ANALYSIS_AND_DEFRAG_DISABLE; 1891 else 1892 return -EINVAL; 1893 1894 ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, 1895 QUERY_ATTR_IDN_HID_DEFRAG_OPERATION, &mode); 1896 1897 return ret < 0 ? ret : count; 1898 } 1899 1900 static DEVICE_ATTR_WO(defrag_trigger); 1901 1902 #define UFS_HID_AVAILABLE_SIZE_INVALID 0xFFFFFFFFU 1903 static ssize_t fragmented_size_show(struct device *dev, 1904 struct device_attribute *attr, char *buf) 1905 { 1906 struct ufs_hba *hba = dev_get_drvdata(dev); 1907 u32 value; 1908 int ret; 1909 1910 ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 1911 QUERY_ATTR_IDN_HID_AVAILABLE_SIZE, &value); 1912 if (ret) 1913 return ret; 1914 1915 if (value == UFS_HID_AVAILABLE_SIZE_INVALID) 1916 return -ENODATA; 1917 1918 return sysfs_emit(buf, "%u\n", value); 1919 } 1920 1921 static DEVICE_ATTR_RO(fragmented_size); 1922 1923 static ssize_t defrag_size_show(struct device *dev, 1924 struct device_attribute *attr, char *buf) 1925 { 1926 struct ufs_hba *hba = dev_get_drvdata(dev); 1927 u32 value; 1928 int ret; 1929 1930 ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 1931 QUERY_ATTR_IDN_HID_SIZE, &value); 1932 if (ret) 1933 return ret; 1934 1935 return sysfs_emit(buf, "%u\n", value); 1936 } 1937 1938 static ssize_t defrag_size_store(struct device *dev, 1939 struct device_attribute *attr, const char *buf, size_t count) 1940 { 1941 struct ufs_hba *hba = dev_get_drvdata(dev); 1942 u32 value; 1943 int ret; 1944 1945 if (kstrtou32(buf, 0, &value)) 1946 return -EINVAL; 1947 1948 ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, 1949 QUERY_ATTR_IDN_HID_SIZE, &value); 1950 1951 return ret < 0 ? ret : count; 1952 } 1953 1954 static DEVICE_ATTR_RW(defrag_size); 1955 1956 static ssize_t progress_ratio_show(struct device *dev, 1957 struct device_attribute *attr, char *buf) 1958 { 1959 struct ufs_hba *hba = dev_get_drvdata(dev); 1960 u32 value; 1961 int ret; 1962 1963 ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 1964 QUERY_ATTR_IDN_HID_PROGRESS_RATIO, &value); 1965 if (ret) 1966 return ret; 1967 1968 return sysfs_emit(buf, "%u\n", value); 1969 } 1970 1971 static DEVICE_ATTR_RO(progress_ratio); 1972 1973 static ssize_t state_show(struct device *dev, 1974 struct device_attribute *attr, char *buf) 1975 { 1976 struct ufs_hba *hba = dev_get_drvdata(dev); 1977 u32 value; 1978 int ret; 1979 1980 ret = hid_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 1981 QUERY_ATTR_IDN_HID_STATE, &value); 1982 if (ret) 1983 return ret; 1984 1985 return sysfs_emit(buf, "%s\n", ufs_hid_state_to_string(value)); 1986 } 1987 1988 static DEVICE_ATTR_RO(state); 1989 1990 static struct attribute *ufs_sysfs_hid[] = { 1991 &dev_attr_analysis_trigger.attr, 1992 &dev_attr_defrag_trigger.attr, 1993 &dev_attr_fragmented_size.attr, 1994 &dev_attr_defrag_size.attr, 1995 &dev_attr_progress_ratio.attr, 1996 &dev_attr_state.attr, 1997 NULL, 1998 }; 1999 2000 static umode_t ufs_sysfs_hid_is_visible(struct kobject *kobj, 2001 struct attribute *attr, int n) 2002 { 2003 struct device *dev = container_of(kobj, struct device, kobj); 2004 struct ufs_hba *hba = dev_get_drvdata(dev); 2005 2006 return hba->dev_info.hid_sup ? attr->mode : 0; 2007 } 2008 2009 static const struct attribute_group ufs_sysfs_hid_group = { 2010 .name = "hid", 2011 .attrs = ufs_sysfs_hid, 2012 .is_visible = ufs_sysfs_hid_is_visible, 2013 }; 2014 2015 static const struct attribute_group *ufs_sysfs_groups[] = { 2016 &ufs_sysfs_default_group, 2017 &ufs_sysfs_capabilities_group, 2018 &ufs_sysfs_ufshci_group, 2019 &ufs_sysfs_monitor_group, 2020 &ufs_sysfs_power_info_group, 2021 &ufs_sysfs_device_descriptor_group, 2022 &ufs_sysfs_interconnect_descriptor_group, 2023 &ufs_sysfs_geometry_descriptor_group, 2024 &ufs_sysfs_health_descriptor_group, 2025 &ufs_sysfs_power_descriptor_group, 2026 &ufs_sysfs_string_descriptors_group, 2027 &ufs_sysfs_flags_group, 2028 &ufs_sysfs_attributes_group, 2029 &ufs_sysfs_hid_group, 2030 NULL, 2031 }; 2032 2033 #define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size) \ 2034 static ssize_t _pname##_show(struct device *dev, \ 2035 struct device_attribute *attr, char *buf) \ 2036 { \ 2037 struct scsi_device *sdev = to_scsi_device(dev); \ 2038 struct ufs_hba *hba = shost_priv(sdev->host); \ 2039 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); \ 2040 if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun)) \ 2041 return -EINVAL; \ 2042 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \ 2043 lun, _duname##_DESC_PARAM##_puname, buf, _size); \ 2044 } \ 2045 static DEVICE_ATTR_RO(_pname) 2046 2047 #define UFS_UNIT_DESC_PARAM(_name, _uname, _size) \ 2048 UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size) 2049 2050 UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1); 2051 UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1); 2052 UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1); 2053 UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1); 2054 UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1); 2055 UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1); 2056 UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1); 2057 UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1); 2058 UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8); 2059 UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4); 2060 UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1); 2061 UFS_UNIT_DESC_PARAM(physical_memory_resource_count, _PHY_MEM_RSRC_CNT, 8); 2062 UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2); 2063 UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1); 2064 UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4); 2065 2066 static struct attribute *ufs_sysfs_unit_descriptor[] = { 2067 &dev_attr_lu_enable.attr, 2068 &dev_attr_boot_lun_id.attr, 2069 &dev_attr_lun_write_protect.attr, 2070 &dev_attr_lun_queue_depth.attr, 2071 &dev_attr_psa_sensitive.attr, 2072 &dev_attr_lun_memory_type.attr, 2073 &dev_attr_data_reliability.attr, 2074 &dev_attr_logical_block_size.attr, 2075 &dev_attr_logical_block_count.attr, 2076 &dev_attr_erase_block_size.attr, 2077 &dev_attr_provisioning_type.attr, 2078 &dev_attr_physical_memory_resource_count.attr, 2079 &dev_attr_context_capabilities.attr, 2080 &dev_attr_large_unit_granularity.attr, 2081 &dev_attr_wb_buf_alloc_units.attr, 2082 NULL, 2083 }; 2084 2085 static umode_t ufs_unit_descriptor_is_visible(struct kobject *kobj, struct attribute *attr, int n) 2086 { 2087 struct device *dev = container_of(kobj, struct device, kobj); 2088 struct scsi_device *sdev = to_scsi_device(dev); 2089 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); 2090 umode_t mode = attr->mode; 2091 2092 if (lun == UFS_UPIU_BOOT_WLUN || lun == UFS_UPIU_UFS_DEVICE_WLUN) 2093 /* Boot and device WLUN have no unit descriptors */ 2094 mode = 0; 2095 if (lun == UFS_UPIU_RPMB_WLUN && attr == &dev_attr_wb_buf_alloc_units.attr) 2096 mode = 0; 2097 2098 return mode; 2099 } 2100 2101 2102 const struct attribute_group ufs_sysfs_unit_descriptor_group = { 2103 .name = "unit_descriptor", 2104 .attrs = ufs_sysfs_unit_descriptor, 2105 .is_visible = ufs_unit_descriptor_is_visible, 2106 }; 2107 2108 static ssize_t dyn_cap_needed_attribute_show(struct device *dev, 2109 struct device_attribute *attr, char *buf) 2110 { 2111 u32 value; 2112 struct scsi_device *sdev = to_scsi_device(dev); 2113 struct ufs_hba *hba = shost_priv(sdev->host); 2114 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); 2115 int ret; 2116 2117 down(&hba->host_sem); 2118 if (!ufshcd_is_user_access_allowed(hba)) { 2119 ret = -EBUSY; 2120 goto out; 2121 } 2122 2123 ufshcd_rpm_get_sync(hba); 2124 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, 2125 QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value); 2126 ufshcd_rpm_put_sync(hba); 2127 if (ret) { 2128 ret = -EINVAL; 2129 goto out; 2130 } 2131 2132 ret = sysfs_emit(buf, "0x%08X\n", value); 2133 2134 out: 2135 up(&hba->host_sem); 2136 return ret; 2137 } 2138 static DEVICE_ATTR_RO(dyn_cap_needed_attribute); 2139 2140 static struct attribute *ufs_sysfs_lun_attributes[] = { 2141 &dev_attr_dyn_cap_needed_attribute.attr, 2142 NULL, 2143 }; 2144 2145 const struct attribute_group ufs_sysfs_lun_attributes_group = { 2146 .attrs = ufs_sysfs_lun_attributes, 2147 }; 2148 2149 void ufs_sysfs_add_nodes(struct device *dev) 2150 { 2151 int ret; 2152 2153 ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups); 2154 if (ret) 2155 dev_err(dev, 2156 "%s: sysfs groups creation failed (err = %d)\n", 2157 __func__, ret); 2158 } 2159 2160 void ufs_sysfs_remove_nodes(struct device *dev) 2161 { 2162 sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups); 2163 } 2164