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 /**
 409  * pm_qos_enable_show - sysfs handler to show pm qos enable value
 410  * @dev: device associated with the UFS controller
 411  * @attr: sysfs attribute handle
 412  * @buf: buffer for sysfs file
 413  *
 414  * Print 1 if PM QoS feature is enabled, 0 if disabled.
 415  *
 416  * Returns number of characters written to @buf.
 417  */
 418 static ssize_t pm_qos_enable_show(struct device *dev,
 419                 struct device_attribute *attr, char *buf)
 420 {
 421         struct ufs_hba *hba = dev_get_drvdata(dev);
 422
 423         return sysfs_emit(buf, "%d\n", hba->pm_qos_enabled);
 424 }
 425
 426 /**
 427  * pm_qos_enable_store - sysfs handler to store value
 428  * @dev: device associated with the UFS controller
 429  * @attr: sysfs attribute handle
 430  * @buf: buffer for sysfs file
 431  * @count: stores buffer characters count
 432  *
 433  * Input 0 to disable PM QoS and 1 value to enable.
 434  * Default state: 1
 435  *
 436  * Return: number of characters written to @buf on success, < 0 upon failure.
 437  */
 438 static ssize_t pm_qos_enable_store(struct device *dev,
 439                 struct device_attribute *attr, const char *buf, size_t count)
 440 {
 441         struct ufs_hba *hba = dev_get_drvdata(dev);
 442         bool value;
 443
 444         if (kstrtobool(buf, &value))
 445                 return -EINVAL;
 446
 447         if (value)
 448                 ufshcd_pm_qos_init(hba);
 449         else
 450                 ufshcd_pm_qos_exit(hba);
 451
 452         return count;
 453 }
 454
 455 static DEVICE_ATTR_RW(rpm_lvl);
 456 static DEVICE_ATTR_RO(rpm_target_dev_state);
 457 static DEVICE_ATTR_RO(rpm_target_link_state);
 458 static DEVICE_ATTR_RW(spm_lvl);
 459 static DEVICE_ATTR_RO(spm_target_dev_state);
 460 static DEVICE_ATTR_RO(spm_target_link_state);
 461 static DEVICE_ATTR_RW(auto_hibern8);
 462 static DEVICE_ATTR_RW(wb_on);
 463 static DEVICE_ATTR_RW(enable_wb_buf_flush);
 464 static DEVICE_ATTR_RW(wb_flush_threshold);
 465 static DEVICE_ATTR_RW(rtc_update_ms);
 466 static DEVICE_ATTR_RW(pm_qos_enable);
 467
 468 static struct attribute *ufs_sysfs_ufshcd_attrs[] = {
 469         &dev_attr_rpm_lvl.attr,
 470         &dev_attr_rpm_target_dev_state.attr,
 471         &dev_attr_rpm_target_link_state.attr,
 472         &dev_attr_spm_lvl.attr,
 473         &dev_attr_spm_target_dev_state.attr,
 474         &dev_attr_spm_target_link_state.attr,
 475         &dev_attr_auto_hibern8.attr,
 476         &dev_attr_wb_on.attr,
 477         &dev_attr_enable_wb_buf_flush.attr,
 478         &dev_attr_wb_flush_threshold.attr,
 479         &dev_attr_rtc_update_ms.attr,
 480         &dev_attr_pm_qos_enable.attr,
 481         NULL
 482 };
 483
 484 static const struct attribute_group ufs_sysfs_default_group = {
 485         .attrs = ufs_sysfs_ufshcd_attrs,
 486 };
 487
 488 static ssize_t clock_scaling_show(struct device *dev, struct device_attribute *attr,
 489                                   char *buf)
 490 {
 491         struct ufs_hba *hba = dev_get_drvdata(dev);
 492
 493         return sysfs_emit(buf, "%d\n", ufshcd_is_clkscaling_supported(hba));
 494 }
 495
 496 static ssize_t write_booster_show(struct device *dev, struct device_attribute *attr,
 497                                   char *buf)
 498 {
 499         struct ufs_hba *hba = dev_get_drvdata(dev);
 500
 501         return sysfs_emit(buf, "%d\n", ufshcd_is_wb_allowed(hba));
 502 }
 503
 504 static DEVICE_ATTR_RO(clock_scaling);
 505 static DEVICE_ATTR_RO(write_booster);
 506
 507 /*
 508  * See Documentation/ABI/testing/sysfs-driver-ufs for the semantics of this
 509  * group.
 510  */
 511 static struct attribute *ufs_sysfs_capabilities_attrs[] = {
 512         &dev_attr_clock_scaling.attr,
 513         &dev_attr_write_booster.attr,
 514         NULL
 515 };
 516
 517 static const struct attribute_group ufs_sysfs_capabilities_group = {
 518         .name = "capabilities",
 519         .attrs = ufs_sysfs_capabilities_attrs,
 520 };
 521
 522 static ssize_t monitor_enable_show(struct device *dev,
 523                                    struct device_attribute *attr, char *buf)
 524 {
 525         struct ufs_hba *hba = dev_get_drvdata(dev);
 526
 527         return sysfs_emit(buf, "%d\n", hba->monitor.enabled);
 528 }
 529
 530 static ssize_t monitor_enable_store(struct device *dev,
 531                                     struct device_attribute *attr,
 532                                     const char *buf, size_t count)
 533 {
 534         struct ufs_hba *hba = dev_get_drvdata(dev);
 535         unsigned long value, flags;
 536
 537         if (kstrtoul(buf, 0, &value))
 538                 return -EINVAL;
 539
 540         value = !!value;
 541         spin_lock_irqsave(hba->host->host_lock, flags);
 542         if (value == hba->monitor.enabled)
 543                 goto out_unlock;
 544
 545         if (!value) {
 546                 memset(&hba->monitor, 0, sizeof(hba->monitor));
 547         } else {
 548                 hba->monitor.enabled = true;
 549                 hba->monitor.enabled_ts = ktime_get();
 550         }
 551
 552 out_unlock:
 553         spin_unlock_irqrestore(hba->host->host_lock, flags);
 554         return count;
 555 }
 556
 557 static ssize_t monitor_chunk_size_show(struct device *dev,
 558                                    struct device_attribute *attr, char *buf)
 559 {
 560         struct ufs_hba *hba = dev_get_drvdata(dev);
 561
 562         return sysfs_emit(buf, "%lu\n", hba->monitor.chunk_size);
 563 }
 564
 565 static ssize_t monitor_chunk_size_store(struct device *dev,
 566                                     struct device_attribute *attr,
 567                                     const char *buf, size_t count)
 568 {
 569         struct ufs_hba *hba = dev_get_drvdata(dev);
 570         unsigned long value, flags;
 571
 572         if (kstrtoul(buf, 0, &value))
 573                 return -EINVAL;
 574
 575         spin_lock_irqsave(hba->host->host_lock, flags);
 576         /* Only allow chunk size change when monitor is disabled */
 577         if (!hba->monitor.enabled)
 578                 hba->monitor.chunk_size = value;
 579         spin_unlock_irqrestore(hba->host->host_lock, flags);
 580         return count;
 581 }
 582
 583 static ssize_t read_total_sectors_show(struct device *dev,
 584                                        struct device_attribute *attr, char *buf)
 585 {
 586         struct ufs_hba *hba = dev_get_drvdata(dev);
 587
 588         return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[READ]);
 589 }
 590
 591 static ssize_t read_total_busy_show(struct device *dev,
 592                                     struct device_attribute *attr, char *buf)
 593 {
 594         struct ufs_hba *hba = dev_get_drvdata(dev);
 595
 596         return sysfs_emit(buf, "%llu\n",
 597                           ktime_to_us(hba->monitor.total_busy[READ]));
 598 }
 599
 600 static ssize_t read_nr_requests_show(struct device *dev,
 601                                      struct device_attribute *attr, char *buf)
 602 {
 603         struct ufs_hba *hba = dev_get_drvdata(dev);
 604
 605         return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[READ]);
 606 }
 607
 608 static ssize_t read_req_latency_avg_show(struct device *dev,
 609                                          struct device_attribute *attr,
 610                                          char *buf)
 611 {
 612         struct ufs_hba *hba = dev_get_drvdata(dev);
 613         struct ufs_hba_monitor *m = &hba->monitor;
 614
 615         return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[READ]),
 616                                                  m->nr_req[READ]));
 617 }
 618
 619 static ssize_t read_req_latency_max_show(struct device *dev,
 620                                          struct device_attribute *attr,
 621                                          char *buf)
 622 {
 623         struct ufs_hba *hba = dev_get_drvdata(dev);
 624
 625         return sysfs_emit(buf, "%llu\n",
 626                           ktime_to_us(hba->monitor.lat_max[READ]));
 627 }
 628
 629 static ssize_t read_req_latency_min_show(struct device *dev,
 630                                          struct device_attribute *attr,
 631                                          char *buf)
 632 {
 633         struct ufs_hba *hba = dev_get_drvdata(dev);
 634
 635         return sysfs_emit(buf, "%llu\n",
 636                           ktime_to_us(hba->monitor.lat_min[READ]));
 637 }
 638
 639 static ssize_t read_req_latency_sum_show(struct device *dev,
 640                                          struct device_attribute *attr,
 641                                          char *buf)
 642 {
 643         struct ufs_hba *hba = dev_get_drvdata(dev);
 644
 645         return sysfs_emit(buf, "%llu\n",
 646                           ktime_to_us(hba->monitor.lat_sum[READ]));
 647 }
 648
 649 static ssize_t write_total_sectors_show(struct device *dev,
 650                                         struct device_attribute *attr,
 651                                         char *buf)
 652 {
 653         struct ufs_hba *hba = dev_get_drvdata(dev);
 654
 655         return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[WRITE]);
 656 }
 657
 658 static ssize_t write_total_busy_show(struct device *dev,
 659                                      struct device_attribute *attr, char *buf)
 660 {
 661         struct ufs_hba *hba = dev_get_drvdata(dev);
 662
 663         return sysfs_emit(buf, "%llu\n",
 664                           ktime_to_us(hba->monitor.total_busy[WRITE]));
 665 }
 666
 667 static ssize_t write_nr_requests_show(struct device *dev,
 668                                       struct device_attribute *attr, char *buf)
 669 {
 670         struct ufs_hba *hba = dev_get_drvdata(dev);
 671
 672         return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[WRITE]);
 673 }
 674
 675 static ssize_t write_req_latency_avg_show(struct device *dev,
 676                                           struct device_attribute *attr,
 677                                           char *buf)
 678 {
 679         struct ufs_hba *hba = dev_get_drvdata(dev);
 680         struct ufs_hba_monitor *m = &hba->monitor;
 681
 682         return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[WRITE]),
 683                                                  m->nr_req[WRITE]));
 684 }
 685
 686 static ssize_t write_req_latency_max_show(struct device *dev,
 687                                           struct device_attribute *attr,
 688                                           char *buf)
 689 {
 690         struct ufs_hba *hba = dev_get_drvdata(dev);
 691
 692         return sysfs_emit(buf, "%llu\n",
 693                           ktime_to_us(hba->monitor.lat_max[WRITE]));
 694 }
 695
 696 static ssize_t write_req_latency_min_show(struct device *dev,
 697                                           struct device_attribute *attr,
 698                                           char *buf)
 699 {
 700         struct ufs_hba *hba = dev_get_drvdata(dev);
 701
 702         return sysfs_emit(buf, "%llu\n",
 703                           ktime_to_us(hba->monitor.lat_min[WRITE]));
 704 }
 705
 706 static ssize_t write_req_latency_sum_show(struct device *dev,
 707                                           struct device_attribute *attr,
 708                                           char *buf)
 709 {
 710         struct ufs_hba *hba = dev_get_drvdata(dev);
 711
 712         return sysfs_emit(buf, "%llu\n",
 713                           ktime_to_us(hba->monitor.lat_sum[WRITE]));
 714 }
 715
 716 static DEVICE_ATTR_RW(monitor_enable);
 717 static DEVICE_ATTR_RW(monitor_chunk_size);
 718 static DEVICE_ATTR_RO(read_total_sectors);
 719 static DEVICE_ATTR_RO(read_total_busy);
 720 static DEVICE_ATTR_RO(read_nr_requests);
 721 static DEVICE_ATTR_RO(read_req_latency_avg);
 722 static DEVICE_ATTR_RO(read_req_latency_max);
 723 static DEVICE_ATTR_RO(read_req_latency_min);
 724 static DEVICE_ATTR_RO(read_req_latency_sum);
 725 static DEVICE_ATTR_RO(write_total_sectors);
 726 static DEVICE_ATTR_RO(write_total_busy);
 727 static DEVICE_ATTR_RO(write_nr_requests);
 728 static DEVICE_ATTR_RO(write_req_latency_avg);
 729 static DEVICE_ATTR_RO(write_req_latency_max);
 730 static DEVICE_ATTR_RO(write_req_latency_min);
 731 static DEVICE_ATTR_RO(write_req_latency_sum);
 732
 733 static struct attribute *ufs_sysfs_monitor_attrs[] = {
 734         &dev_attr_monitor_enable.attr,
 735         &dev_attr_monitor_chunk_size.attr,
 736         &dev_attr_read_total_sectors.attr,
 737         &dev_attr_read_total_busy.attr,
 738         &dev_attr_read_nr_requests.attr,
 739         &dev_attr_read_req_latency_avg.attr,
 740         &dev_attr_read_req_latency_max.attr,
 741         &dev_attr_read_req_latency_min.attr,
 742         &dev_attr_read_req_latency_sum.attr,
 743         &dev_attr_write_total_sectors.attr,
 744         &dev_attr_write_total_busy.attr,
 745         &dev_attr_write_nr_requests.attr,
 746         &dev_attr_write_req_latency_avg.attr,
 747         &dev_attr_write_req_latency_max.attr,
 748         &dev_attr_write_req_latency_min.attr,
 749         &dev_attr_write_req_latency_sum.attr,
 750         NULL
 751 };
 752
 753 static const struct attribute_group ufs_sysfs_monitor_group = {
 754         .name = "monitor",
 755         .attrs = ufs_sysfs_monitor_attrs,
 756 };
 757
 758 static ssize_t lane_show(struct device *dev, struct device_attribute *attr,
 759                          char *buf)
 760 {
 761         struct ufs_hba *hba = dev_get_drvdata(dev);
 762
 763         return sysfs_emit(buf, "%u\n", hba->pwr_info.lane_rx);
 764 }
 765
 766 static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
 767                          char *buf)
 768 {
 769         struct ufs_hba *hba = dev_get_drvdata(dev);
 770
 771         return sysfs_emit(buf, "%s\n", ufs_pa_pwr_mode_to_string(hba->pwr_info.pwr_rx));
 772 }
 773
 774 static ssize_t rate_show(struct device *dev, struct device_attribute *attr,
 775                          char *buf)
 776 {
 777         struct ufs_hba *hba = dev_get_drvdata(dev);
 778
 779         return sysfs_emit(buf, "%s\n", ufs_hs_gear_rate_to_string(hba->pwr_info.hs_rate));
 780 }
 781
 782 static ssize_t gear_show(struct device *dev, struct device_attribute *attr,
 783                          char *buf)
 784 {
 785         struct ufs_hba *hba = dev_get_drvdata(dev);
 786
 787         return sysfs_emit(buf, "%s\n", hba->pwr_info.hs_rate ?
 788                           ufs_hs_gear_to_string(hba->pwr_info.gear_rx) :
 789                           ufs_pwm_gear_to_string(hba->pwr_info.gear_rx));
 790 }
 791
 792 static ssize_t dev_pm_show(struct device *dev, struct device_attribute *attr,
 793                            char *buf)
 794 {
 795         struct ufs_hba *hba = dev_get_drvdata(dev);
 796
 797         return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(hba->curr_dev_pwr_mode));
 798 }
 799
 800 static ssize_t link_state_show(struct device *dev,
 801                                struct device_attribute *attr, char *buf)
 802 {
 803         struct ufs_hba *hba = dev_get_drvdata(dev);
 804
 805         return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(hba->uic_link_state));
 806 }
 807
 808 static DEVICE_ATTR_RO(lane);
 809 static DEVICE_ATTR_RO(mode);
 810 static DEVICE_ATTR_RO(rate);
 811 static DEVICE_ATTR_RO(gear);
 812 static DEVICE_ATTR_RO(dev_pm);
 813 static DEVICE_ATTR_RO(link_state);
 814
 815 static struct attribute *ufs_power_info_attrs[] = {
 816         &dev_attr_lane.attr,
 817         &dev_attr_mode.attr,
 818         &dev_attr_rate.attr,
 819         &dev_attr_gear.attr,
 820         &dev_attr_dev_pm.attr,
 821         &dev_attr_link_state.attr,
 822         NULL
 823 };
 824
 825 static const struct attribute_group ufs_sysfs_power_info_group = {
 826         .name = "power_info",
 827         .attrs = ufs_power_info_attrs,
 828 };
 829
 830 static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba,
 831                                   enum desc_idn desc_id,
 832                                   u8 desc_index,
 833                                   u8 param_offset,
 834                                   u8 *sysfs_buf,
 835                                   u8 param_size)
 836 {
 837         u8 desc_buf[8] = {0};
 838         int ret;
 839
 840         if (param_size > 8)
 841                 return -EINVAL;
 842
 843         down(&hba->host_sem);
 844         if (!ufshcd_is_user_access_allowed(hba)) {
 845                 ret = -EBUSY;
 846                 goto out;
 847         }
 848
 849         ufshcd_rpm_get_sync(hba);
 850         ret = ufshcd_read_desc_param(hba, desc_id, desc_index,
 851                                 param_offset, desc_buf, param_size);
 852         ufshcd_rpm_put_sync(hba);
 853         if (ret) {
 854                 ret = -EINVAL;
 855                 goto out;
 856         }
 857
 858         switch (param_size) {
 859         case 1:
 860                 ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf);
 861                 break;
 862         case 2:
 863                 ret = sysfs_emit(sysfs_buf, "0x%04X\n",
 864                         get_unaligned_be16(desc_buf));
 865                 break;
 866         case 4:
 867                 ret = sysfs_emit(sysfs_buf, "0x%08X\n",
 868                         get_unaligned_be32(desc_buf));
 869                 break;
 870         case 8:
 871                 ret = sysfs_emit(sysfs_buf, "0x%016llX\n",
 872                         get_unaligned_be64(desc_buf));
 873                 break;
 874         }
 875
 876 out:
 877         up(&hba->host_sem);
 878         return ret;
 879 }
 880
 881 #define UFS_DESC_PARAM(_name, _puname, _duname, _size)                  \
 882 static ssize_t _name##_show(struct device *dev,                         \
 883         struct device_attribute *attr, char *buf)                       \
 884 {                                                                       \
 885         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 886         return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
 887                 0, _duname##_DESC_PARAM##_puname, buf, _size);          \
 888 }                                                                       \
 889 static DEVICE_ATTR_RO(_name)
 890
 891 #define UFS_DEVICE_DESC_PARAM(_name, _uname, _size)                     \
 892         UFS_DESC_PARAM(_name, _uname, DEVICE, _size)
 893
 894 UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1);
 895 UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1);
 896 UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1);
 897 UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1);
 898 UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1);
 899 UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1);
 900 UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1);
 901 UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1);
 902 UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1);
 903 UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1);
 904 UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1);
 905 UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1);
 906 UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1);
 907 UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1);
 908 UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2);
 909 UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2);
 910 UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2);
 911 UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1);
 912 UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2);
 913 UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1);
 914 UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1);
 915 UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1);
 916 UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2);
 917 UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1);
 918 UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4);
 919 UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1);
 920 UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4);
 921 UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1);
 922 UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1);
 923 UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4);
 924
 925 static struct attribute *ufs_sysfs_device_descriptor[] = {
 926         &dev_attr_device_type.attr,
 927         &dev_attr_device_class.attr,
 928         &dev_attr_device_sub_class.attr,
 929         &dev_attr_protocol.attr,
 930         &dev_attr_number_of_luns.attr,
 931         &dev_attr_number_of_wluns.attr,
 932         &dev_attr_boot_enable.attr,
 933         &dev_attr_descriptor_access_enable.attr,
 934         &dev_attr_initial_power_mode.attr,
 935         &dev_attr_high_priority_lun.attr,
 936         &dev_attr_secure_removal_type.attr,
 937         &dev_attr_support_security_lun.attr,
 938         &dev_attr_bkops_termination_latency.attr,
 939         &dev_attr_initial_active_icc_level.attr,
 940         &dev_attr_specification_version.attr,
 941         &dev_attr_manufacturing_date.attr,
 942         &dev_attr_manufacturer_id.attr,
 943         &dev_attr_rtt_capability.attr,
 944         &dev_attr_rtc_update.attr,
 945         &dev_attr_ufs_features.attr,
 946         &dev_attr_ffu_timeout.attr,
 947         &dev_attr_queue_depth.attr,
 948         &dev_attr_device_version.attr,
 949         &dev_attr_number_of_secure_wpa.attr,
 950         &dev_attr_psa_max_data_size.attr,
 951         &dev_attr_psa_state_timeout.attr,
 952         &dev_attr_ext_feature_sup.attr,
 953         &dev_attr_wb_presv_us_en.attr,
 954         &dev_attr_wb_type.attr,
 955         &dev_attr_wb_shared_alloc_units.attr,
 956         NULL,
 957 };
 958
 959 static const struct attribute_group ufs_sysfs_device_descriptor_group = {
 960         .name = "device_descriptor",
 961         .attrs = ufs_sysfs_device_descriptor,
 962 };
 963
 964 #define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size)               \
 965         UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size)
 966
 967 UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2);
 968 UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2);
 969
 970 static struct attribute *ufs_sysfs_interconnect_descriptor[] = {
 971         &dev_attr_unipro_version.attr,
 972         &dev_attr_mphy_version.attr,
 973         NULL,
 974 };
 975
 976 static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = {
 977         .name = "interconnect_descriptor",
 978         .attrs = ufs_sysfs_interconnect_descriptor,
 979 };
 980
 981 #define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size)                   \
 982         UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size)
 983
 984 UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8);
 985 UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1);
 986 UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4);
 987 UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1);
 988 UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1);
 989 UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1);
 990 UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1);
 991 UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1);
 992 UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1);
 993 UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1);
 994 UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1);
 995 UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1);
 996 UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1);
 997 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1);
 998 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1);
 999 UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1);
1000 UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2);
1001 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units,
1002         _SCM_MAX_NUM_UNITS, 4);
1003 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor,
1004         _SCM_CAP_ADJ_FCTR, 2);
1005 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units,
1006         _NPM_MAX_NUM_UNITS, 4);
1007 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor,
1008         _NPM_CAP_ADJ_FCTR, 2);
1009 UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units,
1010         _ENM1_MAX_NUM_UNITS, 4);
1011 UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor,
1012         _ENM1_CAP_ADJ_FCTR, 2);
1013 UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units,
1014         _ENM2_MAX_NUM_UNITS, 4);
1015 UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor,
1016         _ENM2_CAP_ADJ_FCTR, 2);
1017 UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units,
1018         _ENM3_MAX_NUM_UNITS, 4);
1019 UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor,
1020         _ENM3_CAP_ADJ_FCTR, 2);
1021 UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units,
1022         _ENM4_MAX_NUM_UNITS, 4);
1023 UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor,
1024         _ENM4_CAP_ADJ_FCTR, 2);
1025 UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4);
1026 UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1);
1027 UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1);
1028 UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1);
1029 UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1);
1030
1031
1032 static struct attribute *ufs_sysfs_geometry_descriptor[] = {
1033         &dev_attr_raw_device_capacity.attr,
1034         &dev_attr_max_number_of_luns.attr,
1035         &dev_attr_segment_size.attr,
1036         &dev_attr_allocation_unit_size.attr,
1037         &dev_attr_min_addressable_block_size.attr,
1038         &dev_attr_optimal_read_block_size.attr,
1039         &dev_attr_optimal_write_block_size.attr,
1040         &dev_attr_max_in_buffer_size.attr,
1041         &dev_attr_max_out_buffer_size.attr,
1042         &dev_attr_rpmb_rw_size.attr,
1043         &dev_attr_dyn_capacity_resource_policy.attr,
1044         &dev_attr_data_ordering.attr,
1045         &dev_attr_max_number_of_contexts.attr,
1046         &dev_attr_sys_data_tag_unit_size.attr,
1047         &dev_attr_sys_data_tag_resource_size.attr,
1048         &dev_attr_secure_removal_types.attr,
1049         &dev_attr_memory_types.attr,
1050         &dev_attr_sys_code_memory_max_alloc_units.attr,
1051         &dev_attr_sys_code_memory_capacity_adjustment_factor.attr,
1052         &dev_attr_non_persist_memory_max_alloc_units.attr,
1053         &dev_attr_non_persist_memory_capacity_adjustment_factor.attr,
1054         &dev_attr_enh1_memory_max_alloc_units.attr,
1055         &dev_attr_enh1_memory_capacity_adjustment_factor.attr,
1056         &dev_attr_enh2_memory_max_alloc_units.attr,
1057         &dev_attr_enh2_memory_capacity_adjustment_factor.attr,
1058         &dev_attr_enh3_memory_max_alloc_units.attr,
1059         &dev_attr_enh3_memory_capacity_adjustment_factor.attr,
1060         &dev_attr_enh4_memory_max_alloc_units.attr,
1061         &dev_attr_enh4_memory_capacity_adjustment_factor.attr,
1062         &dev_attr_wb_max_alloc_units.attr,
1063         &dev_attr_wb_max_wb_luns.attr,
1064         &dev_attr_wb_buff_cap_adj.attr,
1065         &dev_attr_wb_sup_red_type.attr,
1066         &dev_attr_wb_sup_wb_type.attr,
1067         NULL,
1068 };
1069
1070 static const struct attribute_group ufs_sysfs_geometry_descriptor_group = {
1071         .name = "geometry_descriptor",
1072         .attrs = ufs_sysfs_geometry_descriptor,
1073 };
1074
1075 #define UFS_HEALTH_DESC_PARAM(_name, _uname, _size)                     \
1076         UFS_DESC_PARAM(_name, _uname, HEALTH, _size)
1077
1078 UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1);
1079 UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1);
1080 UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1);
1081
1082 static struct attribute *ufs_sysfs_health_descriptor[] = {
1083         &dev_attr_eol_info.attr,
1084         &dev_attr_life_time_estimation_a.attr,
1085         &dev_attr_life_time_estimation_b.attr,
1086         NULL,
1087 };
1088
1089 static const struct attribute_group ufs_sysfs_health_descriptor_group = {
1090         .name = "health_descriptor",
1091         .attrs = ufs_sysfs_health_descriptor,
1092 };
1093
1094 #define UFS_POWER_DESC_PARAM(_name, _uname, _index)                     \
1095 static ssize_t _name##_index##_show(struct device *dev,                 \
1096         struct device_attribute *attr, char *buf)                       \
1097 {                                                                       \
1098         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
1099         return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0,  \
1100                 PWR_DESC##_uname##_0 + _index * 2, buf, 2);             \
1101 }                                                                       \
1102 static DEVICE_ATTR_RO(_name##_index)
1103
1104 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0);
1105 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1);
1106 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2);
1107 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3);
1108 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4);
1109 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5);
1110 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6);
1111 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7);
1112 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8);
1113 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9);
1114 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10);
1115 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11);
1116 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12);
1117 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13);
1118 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14);
1119 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15);
1120 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0);
1121 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1);
1122 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2);
1123 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3);
1124 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4);
1125 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5);
1126 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6);
1127 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7);
1128 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8);
1129 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9);
1130 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10);
1131 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11);
1132 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12);
1133 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13);
1134 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14);
1135 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15);
1136 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0);
1137 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1);
1138 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2);
1139 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3);
1140 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4);
1141 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5);
1142 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6);
1143 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7);
1144 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8);
1145 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9);
1146 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10);
1147 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11);
1148 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12);
1149 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13);
1150 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14);
1151 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15);
1152
1153 static struct attribute *ufs_sysfs_power_descriptor[] = {
1154         &dev_attr_active_icc_levels_vcc0.attr,
1155         &dev_attr_active_icc_levels_vcc1.attr,
1156         &dev_attr_active_icc_levels_vcc2.attr,
1157         &dev_attr_active_icc_levels_vcc3.attr,
1158         &dev_attr_active_icc_levels_vcc4.attr,
1159         &dev_attr_active_icc_levels_vcc5.attr,
1160         &dev_attr_active_icc_levels_vcc6.attr,
1161         &dev_attr_active_icc_levels_vcc7.attr,
1162         &dev_attr_active_icc_levels_vcc8.attr,
1163         &dev_attr_active_icc_levels_vcc9.attr,
1164         &dev_attr_active_icc_levels_vcc10.attr,
1165         &dev_attr_active_icc_levels_vcc11.attr,
1166         &dev_attr_active_icc_levels_vcc12.attr,
1167         &dev_attr_active_icc_levels_vcc13.attr,
1168         &dev_attr_active_icc_levels_vcc14.attr,
1169         &dev_attr_active_icc_levels_vcc15.attr,
1170         &dev_attr_active_icc_levels_vccq0.attr,
1171         &dev_attr_active_icc_levels_vccq1.attr,
1172         &dev_attr_active_icc_levels_vccq2.attr,
1173         &dev_attr_active_icc_levels_vccq3.attr,
1174         &dev_attr_active_icc_levels_vccq4.attr,
1175         &dev_attr_active_icc_levels_vccq5.attr,
1176         &dev_attr_active_icc_levels_vccq6.attr,
1177         &dev_attr_active_icc_levels_vccq7.attr,
1178         &dev_attr_active_icc_levels_vccq8.attr,
1179         &dev_attr_active_icc_levels_vccq9.attr,
1180         &dev_attr_active_icc_levels_vccq10.attr,
1181         &dev_attr_active_icc_levels_vccq11.attr,
1182         &dev_attr_active_icc_levels_vccq12.attr,
1183         &dev_attr_active_icc_levels_vccq13.attr,
1184         &dev_attr_active_icc_levels_vccq14.attr,
1185         &dev_attr_active_icc_levels_vccq15.attr,
1186         &dev_attr_active_icc_levels_vccq20.attr,
1187         &dev_attr_active_icc_levels_vccq21.attr,
1188         &dev_attr_active_icc_levels_vccq22.attr,
1189         &dev_attr_active_icc_levels_vccq23.attr,
1190         &dev_attr_active_icc_levels_vccq24.attr,
1191         &dev_attr_active_icc_levels_vccq25.attr,
1192         &dev_attr_active_icc_levels_vccq26.attr,
1193         &dev_attr_active_icc_levels_vccq27.attr,
1194         &dev_attr_active_icc_levels_vccq28.attr,
1195         &dev_attr_active_icc_levels_vccq29.attr,
1196         &dev_attr_active_icc_levels_vccq210.attr,
1197         &dev_attr_active_icc_levels_vccq211.attr,
1198         &dev_attr_active_icc_levels_vccq212.attr,
1199         &dev_attr_active_icc_levels_vccq213.attr,
1200         &dev_attr_active_icc_levels_vccq214.attr,
1201         &dev_attr_active_icc_levels_vccq215.attr,
1202         NULL,
1203 };
1204
1205 static const struct attribute_group ufs_sysfs_power_descriptor_group = {
1206         .name = "power_descriptor",
1207         .attrs = ufs_sysfs_power_descriptor,
1208 };
1209
1210 #define UFS_STRING_DESCRIPTOR(_name, _pname)                            \
1211 static ssize_t _name##_show(struct device *dev,                         \
1212         struct device_attribute *attr, char *buf)                       \
1213 {                                                                       \
1214         u8 index;                                                       \
1215         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
1216         int ret;                                                        \
1217         int desc_len = QUERY_DESC_MAX_SIZE;                             \
1218         u8 *desc_buf;                                                   \
1219                                                                         \
1220         down(&hba->host_sem);                                           \
1221         if (!ufshcd_is_user_access_allowed(hba)) {                      \
1222                 up(&hba->host_sem);                                     \
1223                 return -EBUSY;                                          \
1224         }                                                               \
1225         desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC);            \
1226         if (!desc_buf) {                                                \
1227                 up(&hba->host_sem);                                     \
1228                 return -ENOMEM;                                         \
1229         }                                                               \
1230         ufshcd_rpm_get_sync(hba);                                       \
1231         ret = ufshcd_query_descriptor_retry(hba,                        \
1232                 UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE,     \
1233                 0, 0, desc_buf, &desc_len);                             \
1234         if (ret) {                                                      \
1235                 ret = -EINVAL;                                          \
1236                 goto out;                                               \
1237         }                                                               \
1238         index = desc_buf[DEVICE_DESC_PARAM##_pname];                    \
1239         kfree(desc_buf);                                                \
1240         desc_buf = NULL;                                                \
1241         ret = ufshcd_read_string_desc(hba, index, &desc_buf,            \
1242                                       SD_ASCII_STD);                    \
1243         if (ret < 0)                                                    \
1244                 goto out;                                               \
1245         ret = sysfs_emit(buf, "%s\n", desc_buf);                        \
1246 out:                                                                    \
1247         ufshcd_rpm_put_sync(hba);                                       \
1248         kfree(desc_buf);                                                \
1249         up(&hba->host_sem);                                             \
1250         return ret;                                                     \
1251 }                                                                       \
1252 static DEVICE_ATTR_RO(_name)
1253
1254 UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME);
1255 UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME);
1256 UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID);
1257 UFS_STRING_DESCRIPTOR(serial_number, _SN);
1258 UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV);
1259
1260 static struct attribute *ufs_sysfs_string_descriptors[] = {
1261         &dev_attr_manufacturer_name.attr,
1262         &dev_attr_product_name.attr,
1263         &dev_attr_oem_id.attr,
1264         &dev_attr_serial_number.attr,
1265         &dev_attr_product_revision.attr,
1266         NULL,
1267 };
1268
1269 static const struct attribute_group ufs_sysfs_string_descriptors_group = {
1270         .name = "string_descriptors",
1271         .attrs = ufs_sysfs_string_descriptors,
1272 };
1273
1274 static inline bool ufshcd_is_wb_flags(enum flag_idn idn)
1275 {
1276         return idn >= QUERY_FLAG_IDN_WB_EN &&
1277                 idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8;
1278 }
1279
1280 #define UFS_FLAG(_name, _uname)                                         \
1281 static ssize_t _name##_show(struct device *dev,                         \
1282         struct device_attribute *attr, char *buf)                       \
1283 {                                                                       \
1284         bool flag;                                                      \
1285         u8 index = 0;                                                   \
1286         int ret;                                                        \
1287         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
1288                                                                         \
1289         down(&hba->host_sem);                                           \
1290         if (!ufshcd_is_user_access_allowed(hba)) {                      \
1291                 up(&hba->host_sem);                                     \
1292                 return -EBUSY;                                          \
1293         }                                                               \
1294         if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname))                 \
1295                 index = ufshcd_wb_get_query_index(hba);                 \
1296         ufshcd_rpm_get_sync(hba);                                       \
1297         ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG,       \
1298                 QUERY_FLAG_IDN##_uname, index, &flag);                  \
1299         ufshcd_rpm_put_sync(hba);                                       \
1300         if (ret) {                                                      \
1301                 ret = -EINVAL;                                          \
1302                 goto out;                                               \
1303         }                                                               \
1304         ret = sysfs_emit(buf, "%s\n", flag ? "true" : "false");         \
1305 out:                                                                    \
1306         up(&hba->host_sem);                                             \
1307         return ret;                                                     \
1308 }                                                                       \
1309 static DEVICE_ATTR_RO(_name)
1310
1311 UFS_FLAG(device_init, _FDEVICEINIT);
1312 UFS_FLAG(permanent_wpe, _PERMANENT_WPE);
1313 UFS_FLAG(power_on_wpe, _PWR_ON_WPE);
1314 UFS_FLAG(bkops_enable, _BKOPS_EN);
1315 UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE);
1316 UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL);
1317 UFS_FLAG(busy_rtc, _BUSY_RTC);
1318 UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE);
1319 UFS_FLAG(wb_enable, _WB_EN);
1320 UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN);
1321 UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8);
1322
1323 static struct attribute *ufs_sysfs_device_flags[] = {
1324         &dev_attr_device_init.attr,
1325         &dev_attr_permanent_wpe.attr,
1326         &dev_attr_power_on_wpe.attr,
1327         &dev_attr_bkops_enable.attr,
1328         &dev_attr_life_span_mode_enable.attr,
1329         &dev_attr_phy_resource_removal.attr,
1330         &dev_attr_busy_rtc.attr,
1331         &dev_attr_disable_fw_update.attr,
1332         &dev_attr_wb_enable.attr,
1333         &dev_attr_wb_flush_en.attr,
1334         &dev_attr_wb_flush_during_h8.attr,
1335         NULL,
1336 };
1337
1338 static const struct attribute_group ufs_sysfs_flags_group = {
1339         .name = "flags",
1340         .attrs = ufs_sysfs_device_flags,
1341 };
1342
1343 static inline bool ufshcd_is_wb_attrs(enum attr_idn idn)
1344 {
1345         return idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS &&
1346                 idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE;
1347 }
1348
1349 #define UFS_ATTRIBUTE(_name, _uname)                                    \
1350 static ssize_t _name##_show(struct device *dev,                         \
1351         struct device_attribute *attr, char *buf)                       \
1352 {                                                                       \
1353         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
1354         u32 value;                                                      \
1355         int ret;                                                        \
1356         u8 index = 0;                                                   \
1357                                                                         \
1358         down(&hba->host_sem);                                           \
1359         if (!ufshcd_is_user_access_allowed(hba)) {                      \
1360                 up(&hba->host_sem);                                     \
1361                 return -EBUSY;                                          \
1362         }                                                               \
1363         if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname))                 \
1364                 index = ufshcd_wb_get_query_index(hba);                 \
1365         ufshcd_rpm_get_sync(hba);                                       \
1366         ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,       \
1367                 QUERY_ATTR_IDN##_uname, index, 0, &value);              \
1368         ufshcd_rpm_put_sync(hba);                                       \
1369         if (ret) {                                                      \
1370                 ret = -EINVAL;                                          \
1371                 goto out;                                               \
1372         }                                                               \
1373         ret = sysfs_emit(buf, "0x%08X\n", value);                       \
1374 out:                                                                    \
1375         up(&hba->host_sem);                                             \
1376         return ret;                                                     \
1377 }                                                                       \
1378 static DEVICE_ATTR_RO(_name)
1379
1380 UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN);
1381 UFS_ATTRIBUTE(current_power_mode, _POWER_MODE);
1382 UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL);
1383 UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN);
1384 UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS);
1385 UFS_ATTRIBUTE(purge_status, _PURGE_STATUS);
1386 UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN);
1387 UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT);
1388 UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ);
1389 UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK);
1390 UFS_ATTRIBUTE(max_number_of_rtt, _MAX_NUM_OF_RTT);
1391 UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL);
1392 UFS_ATTRIBUTE(exception_event_status, _EE_STATUS);
1393 UFS_ATTRIBUTE(ffu_status, _FFU_STATUS);
1394 UFS_ATTRIBUTE(psa_state, _PSA_STATE);
1395 UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE);
1396 UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS);
1397 UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE);
1398 UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST);
1399 UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE);
1400
1401
1402 static struct attribute *ufs_sysfs_attributes[] = {
1403         &dev_attr_boot_lun_enabled.attr,
1404         &dev_attr_current_power_mode.attr,
1405         &dev_attr_active_icc_level.attr,
1406         &dev_attr_ooo_data_enabled.attr,
1407         &dev_attr_bkops_status.attr,
1408         &dev_attr_purge_status.attr,
1409         &dev_attr_max_data_in_size.attr,
1410         &dev_attr_max_data_out_size.attr,
1411         &dev_attr_reference_clock_frequency.attr,
1412         &dev_attr_configuration_descriptor_lock.attr,
1413         &dev_attr_max_number_of_rtt.attr,
1414         &dev_attr_exception_event_control.attr,
1415         &dev_attr_exception_event_status.attr,
1416         &dev_attr_ffu_status.attr,
1417         &dev_attr_psa_state.attr,
1418         &dev_attr_psa_data_size.attr,
1419         &dev_attr_wb_flush_status.attr,
1420         &dev_attr_wb_avail_buf.attr,
1421         &dev_attr_wb_life_time_est.attr,
1422         &dev_attr_wb_cur_buf.attr,
1423         NULL,
1424 };
1425
1426 static const struct attribute_group ufs_sysfs_attributes_group = {
1427         .name = "attributes",
1428         .attrs = ufs_sysfs_attributes,
1429 };
1430
1431 static const struct attribute_group *ufs_sysfs_groups[] = {
1432         &ufs_sysfs_default_group,
1433         &ufs_sysfs_capabilities_group,
1434         &ufs_sysfs_monitor_group,
1435         &ufs_sysfs_power_info_group,
1436         &ufs_sysfs_device_descriptor_group,
1437         &ufs_sysfs_interconnect_descriptor_group,
1438         &ufs_sysfs_geometry_descriptor_group,
1439         &ufs_sysfs_health_descriptor_group,
1440         &ufs_sysfs_power_descriptor_group,
1441         &ufs_sysfs_string_descriptors_group,
1442         &ufs_sysfs_flags_group,
1443         &ufs_sysfs_attributes_group,
1444         NULL,
1445 };
1446
1447 #define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size)             \
1448 static ssize_t _pname##_show(struct device *dev,                        \
1449         struct device_attribute *attr, char *buf)                       \
1450 {                                                                       \
1451         struct scsi_device *sdev = to_scsi_device(dev);                 \
1452         struct ufs_hba *hba = shost_priv(sdev->host);                   \
1453         u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);                    \
1454         if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun))           \
1455                 return -EINVAL;                                         \
1456         return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
1457                 lun, _duname##_DESC_PARAM##_puname, buf, _size);        \
1458 }                                                                       \
1459 static DEVICE_ATTR_RO(_pname)
1460
1461 #define UFS_UNIT_DESC_PARAM(_name, _uname, _size)                       \
1462         UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size)
1463
1464 UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1);
1465 UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1);
1466 UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1);
1467 UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1);
1468 UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1);
1469 UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1);
1470 UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1);
1471 UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1);
1472 UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8);
1473 UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4);
1474 UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1);
1475 UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8);
1476 UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2);
1477 UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1);
1478 UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4);
1479
1480 static struct attribute *ufs_sysfs_unit_descriptor[] = {
1481         &dev_attr_lu_enable.attr,
1482         &dev_attr_boot_lun_id.attr,
1483         &dev_attr_lun_write_protect.attr,
1484         &dev_attr_lun_queue_depth.attr,
1485         &dev_attr_psa_sensitive.attr,
1486         &dev_attr_lun_memory_type.attr,
1487         &dev_attr_data_reliability.attr,
1488         &dev_attr_logical_block_size.attr,
1489         &dev_attr_logical_block_count.attr,
1490         &dev_attr_erase_block_size.attr,
1491         &dev_attr_provisioning_type.attr,
1492         &dev_attr_physical_memory_resourse_count.attr,
1493         &dev_attr_context_capabilities.attr,
1494         &dev_attr_large_unit_granularity.attr,
1495         &dev_attr_wb_buf_alloc_units.attr,
1496         NULL,
1497 };
1498
1499 static umode_t ufs_unit_descriptor_is_visible(struct kobject *kobj, struct attribute *attr, int n)
1500 {
1501         struct device *dev = container_of(kobj, struct device, kobj);
1502         struct scsi_device *sdev = to_scsi_device(dev);
1503         u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
1504         umode_t mode = attr->mode;
1505
1506         if (lun == UFS_UPIU_BOOT_WLUN || lun == UFS_UPIU_UFS_DEVICE_WLUN)
1507                 /* Boot and device WLUN have no unit descriptors */
1508                 mode = 0;
1509         if (lun == UFS_UPIU_RPMB_WLUN && attr == &dev_attr_wb_buf_alloc_units.attr)
1510                 mode = 0;
1511
1512         return mode;
1513 }
1514
1515
1516 const struct attribute_group ufs_sysfs_unit_descriptor_group = {
1517         .name = "unit_descriptor",
1518         .attrs = ufs_sysfs_unit_descriptor,
1519         .is_visible = ufs_unit_descriptor_is_visible,
1520 };
1521
1522 static ssize_t dyn_cap_needed_attribute_show(struct device *dev,
1523         struct device_attribute *attr, char *buf)
1524 {
1525         u32 value;
1526         struct scsi_device *sdev = to_scsi_device(dev);
1527         struct ufs_hba *hba = shost_priv(sdev->host);
1528         u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
1529         int ret;
1530
1531         down(&hba->host_sem);
1532         if (!ufshcd_is_user_access_allowed(hba)) {
1533                 ret = -EBUSY;
1534                 goto out;
1535         }
1536
1537         ufshcd_rpm_get_sync(hba);
1538         ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,
1539                 QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value);
1540         ufshcd_rpm_put_sync(hba);
1541         if (ret) {
1542                 ret = -EINVAL;
1543                 goto out;
1544         }
1545
1546         ret = sysfs_emit(buf, "0x%08X\n", value);
1547
1548 out:
1549         up(&hba->host_sem);
1550         return ret;
1551 }
1552 static DEVICE_ATTR_RO(dyn_cap_needed_attribute);
1553
1554 static struct attribute *ufs_sysfs_lun_attributes[] = {
1555         &dev_attr_dyn_cap_needed_attribute.attr,
1556         NULL,
1557 };
1558
1559 const struct attribute_group ufs_sysfs_lun_attributes_group = {
1560         .attrs = ufs_sysfs_lun_attributes,
1561 };
1562
1563 void ufs_sysfs_add_nodes(struct device *dev)
1564 {
1565         int ret;
1566
1567         ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups);
1568         if (ret)
1569                 dev_err(dev,
1570                         "%s: sysfs groups creation failed (err = %d)\n",
1571                         __func__, ret);
1572 }
1573
1574 void ufs_sysfs_remove_nodes(struct device *dev)
1575 {
1576         sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups);
1577 }