drivers/ufs/core/ufs-sysfs.c

   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 }