drivers/scsi/ufs/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.h"
  10 #include "ufs-sysfs.h"
  11
  12 static const char *ufshcd_uic_link_state_to_string(
  13                         enum uic_link_state state)
  14 {
  15         switch (state) {
  16         case UIC_LINK_OFF_STATE:        return "OFF";
  17         case UIC_LINK_ACTIVE_STATE:     return "ACTIVE";
  18         case UIC_LINK_HIBERN8_STATE:    return "HIBERN8";
  19         case UIC_LINK_BROKEN_STATE:     return "BROKEN";
  20         default:                        return "UNKNOWN";
  21         }
  22 }
  23
  24 static const char *ufshcd_ufs_dev_pwr_mode_to_string(
  25                         enum ufs_dev_pwr_mode state)
  26 {
  27         switch (state) {
  28         case UFS_ACTIVE_PWR_MODE:       return "ACTIVE";
  29         case UFS_SLEEP_PWR_MODE:        return "SLEEP";
  30         case UFS_POWERDOWN_PWR_MODE:    return "POWERDOWN";
  31         case UFS_DEEPSLEEP_PWR_MODE:    return "DEEPSLEEP";
  32         default:                        return "UNKNOWN";
  33         }
  34 }
  35
  36 static inline ssize_t ufs_sysfs_pm_lvl_store(struct device *dev,
  37                                              struct device_attribute *attr,
  38                                              const char *buf, size_t count,
  39                                              bool rpm)
  40 {
  41         struct ufs_hba *hba = dev_get_drvdata(dev);
  42         struct ufs_dev_info *dev_info = &hba->dev_info;
  43         unsigned long flags, value;
  44
  45         if (kstrtoul(buf, 0, &value))
  46                 return -EINVAL;
  47
  48         if (value >= UFS_PM_LVL_MAX)
  49                 return -EINVAL;
  50
  51         if (ufs_pm_lvl_states[value].dev_state == UFS_DEEPSLEEP_PWR_MODE &&
  52             (!(hba->caps & UFSHCD_CAP_DEEPSLEEP) ||
  53              !(dev_info->wspecversion >= 0x310)))
  54                 return -EINVAL;
  55
  56         spin_lock_irqsave(hba->host->host_lock, flags);
  57         if (rpm)
  58                 hba->rpm_lvl = value;
  59         else
  60                 hba->spm_lvl = value;
  61         spin_unlock_irqrestore(hba->host->host_lock, flags);
  62         return count;
  63 }
  64
  65 static ssize_t rpm_lvl_show(struct device *dev,
  66                 struct device_attribute *attr, char *buf)
  67 {
  68         struct ufs_hba *hba = dev_get_drvdata(dev);
  69
  70         return sysfs_emit(buf, "%d\n", hba->rpm_lvl);
  71 }
  72
  73 static ssize_t rpm_lvl_store(struct device *dev,
  74                 struct device_attribute *attr, const char *buf, size_t count)
  75 {
  76         return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, true);
  77 }
  78
  79 static ssize_t rpm_target_dev_state_show(struct device *dev,
  80                 struct device_attribute *attr, char *buf)
  81 {
  82         struct ufs_hba *hba = dev_get_drvdata(dev);
  83
  84         return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(
  85                         ufs_pm_lvl_states[hba->rpm_lvl].dev_state));
  86 }
  87
  88 static ssize_t rpm_target_link_state_show(struct device *dev,
  89                 struct device_attribute *attr, char *buf)
  90 {
  91         struct ufs_hba *hba = dev_get_drvdata(dev);
  92
  93         return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(
  94                         ufs_pm_lvl_states[hba->rpm_lvl].link_state));
  95 }
  96
  97 static ssize_t spm_lvl_show(struct device *dev,
  98                 struct device_attribute *attr, char *buf)
  99 {
 100         struct ufs_hba *hba = dev_get_drvdata(dev);
 101
 102         return sysfs_emit(buf, "%d\n", hba->spm_lvl);
 103 }
 104
 105 static ssize_t spm_lvl_store(struct device *dev,
 106                 struct device_attribute *attr, const char *buf, size_t count)
 107 {
 108         return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, false);
 109 }
 110
 111 static ssize_t spm_target_dev_state_show(struct device *dev,
 112                 struct device_attribute *attr, char *buf)
 113 {
 114         struct ufs_hba *hba = dev_get_drvdata(dev);
 115
 116         return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(
 117                                 ufs_pm_lvl_states[hba->spm_lvl].dev_state));
 118 }
 119
 120 static ssize_t spm_target_link_state_show(struct device *dev,
 121                 struct device_attribute *attr, char *buf)
 122 {
 123         struct ufs_hba *hba = dev_get_drvdata(dev);
 124
 125         return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(
 126                                 ufs_pm_lvl_states[hba->spm_lvl].link_state));
 127 }
 128
 129 /* Convert Auto-Hibernate Idle Timer register value to microseconds */
 130 static int ufshcd_ahit_to_us(u32 ahit)
 131 {
 132         int timer = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, ahit);
 133         int scale = FIELD_GET(UFSHCI_AHIBERN8_SCALE_MASK, ahit);
 134
 135         for (; scale > 0; --scale)
 136                 timer *= UFSHCI_AHIBERN8_SCALE_FACTOR;
 137
 138         return timer;
 139 }
 140
 141 /* Convert microseconds to Auto-Hibernate Idle Timer register value */
 142 static u32 ufshcd_us_to_ahit(unsigned int timer)
 143 {
 144         unsigned int scale;
 145
 146         for (scale = 0; timer > UFSHCI_AHIBERN8_TIMER_MASK; ++scale)
 147                 timer /= UFSHCI_AHIBERN8_SCALE_FACTOR;
 148
 149         return FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, timer) |
 150                FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, scale);
 151 }
 152
 153 static ssize_t auto_hibern8_show(struct device *dev,
 154                                  struct device_attribute *attr, char *buf)
 155 {
 156         u32 ahit;
 157         int ret;
 158         struct ufs_hba *hba = dev_get_drvdata(dev);
 159
 160         if (!ufshcd_is_auto_hibern8_supported(hba))
 161                 return -EOPNOTSUPP;
 162
 163         down(&hba->host_sem);
 164         if (!ufshcd_is_user_access_allowed(hba)) {
 165                 ret = -EBUSY;
 166                 goto out;
 167         }
 168
 169         pm_runtime_get_sync(hba->dev);
 170         ufshcd_hold(hba, false);
 171         ahit = ufshcd_readl(hba, REG_AUTO_HIBERNATE_IDLE_TIMER);
 172         ufshcd_release(hba);
 173         pm_runtime_put_sync(hba->dev);
 174
 175         ret = sysfs_emit(buf, "%d\n", ufshcd_ahit_to_us(ahit));
 176
 177 out:
 178         up(&hba->host_sem);
 179         return ret;
 180 }
 181
 182 static ssize_t auto_hibern8_store(struct device *dev,
 183                                   struct device_attribute *attr,
 184                                   const char *buf, size_t count)
 185 {
 186         struct ufs_hba *hba = dev_get_drvdata(dev);
 187         unsigned int timer;
 188         int ret = 0;
 189
 190         if (!ufshcd_is_auto_hibern8_supported(hba))
 191                 return -EOPNOTSUPP;
 192
 193         if (kstrtouint(buf, 0, &timer))
 194                 return -EINVAL;
 195
 196         if (timer > UFSHCI_AHIBERN8_MAX)
 197                 return -EINVAL;
 198
 199         down(&hba->host_sem);
 200         if (!ufshcd_is_user_access_allowed(hba)) {
 201                 ret = -EBUSY;
 202                 goto out;
 203         }
 204
 205         ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer));
 206
 207 out:
 208         up(&hba->host_sem);
 209         return ret ? ret : count;
 210 }
 211
 212 static ssize_t wb_on_show(struct device *dev, struct device_attribute *attr,
 213                           char *buf)
 214 {
 215         struct ufs_hba *hba = dev_get_drvdata(dev);
 216
 217         return sysfs_emit(buf, "%d\n", hba->dev_info.wb_enabled);
 218 }
 219
 220 static ssize_t wb_on_store(struct device *dev, struct device_attribute *attr,
 221                            const char *buf, size_t count)
 222 {
 223         struct ufs_hba *hba = dev_get_drvdata(dev);
 224         unsigned int wb_enable;
 225         ssize_t res;
 226
 227         if (!ufshcd_is_wb_allowed(hba) || ufshcd_is_clkscaling_supported(hba)) {
 228                 /*
 229                  * If the platform supports UFSHCD_CAP_CLK_SCALING, turn WB
 230                  * on/off will be done while clock scaling up/down.
 231                  */
 232                 dev_warn(dev, "To control WB through wb_on is not allowed!\n");
 233                 return -EOPNOTSUPP;
 234         }
 235
 236         if (kstrtouint(buf, 0, &wb_enable))
 237                 return -EINVAL;
 238
 239         if (wb_enable != 0 && wb_enable != 1)
 240                 return -EINVAL;
 241
 242         down(&hba->host_sem);
 243         if (!ufshcd_is_user_access_allowed(hba)) {
 244                 res = -EBUSY;
 245                 goto out;
 246         }
 247
 248         ufshcd_rpm_get_sync(hba);
 249         res = ufshcd_wb_toggle(hba, wb_enable);
 250         ufshcd_rpm_put_sync(hba);
 251 out:
 252         up(&hba->host_sem);
 253         return res < 0 ? res : count;
 254 }
 255
 256 static DEVICE_ATTR_RW(rpm_lvl);
 257 static DEVICE_ATTR_RO(rpm_target_dev_state);
 258 static DEVICE_ATTR_RO(rpm_target_link_state);
 259 static DEVICE_ATTR_RW(spm_lvl);
 260 static DEVICE_ATTR_RO(spm_target_dev_state);
 261 static DEVICE_ATTR_RO(spm_target_link_state);
 262 static DEVICE_ATTR_RW(auto_hibern8);
 263 static DEVICE_ATTR_RW(wb_on);
 264
 265 static struct attribute *ufs_sysfs_ufshcd_attrs[] = {
 266         &dev_attr_rpm_lvl.attr,
 267         &dev_attr_rpm_target_dev_state.attr,
 268         &dev_attr_rpm_target_link_state.attr,
 269         &dev_attr_spm_lvl.attr,
 270         &dev_attr_spm_target_dev_state.attr,
 271         &dev_attr_spm_target_link_state.attr,
 272         &dev_attr_auto_hibern8.attr,
 273         &dev_attr_wb_on.attr,
 274         NULL
 275 };
 276
 277 static const struct attribute_group ufs_sysfs_default_group = {
 278         .attrs = ufs_sysfs_ufshcd_attrs,
 279 };
 280
 281 static ssize_t monitor_enable_show(struct device *dev,
 282                                    struct device_attribute *attr, char *buf)
 283 {
 284         struct ufs_hba *hba = dev_get_drvdata(dev);
 285
 286         return sysfs_emit(buf, "%d\n", hba->monitor.enabled);
 287 }
 288
 289 static ssize_t monitor_enable_store(struct device *dev,
 290                                     struct device_attribute *attr,
 291                                     const char *buf, size_t count)
 292 {
 293         struct ufs_hba *hba = dev_get_drvdata(dev);
 294         unsigned long value, flags;
 295
 296         if (kstrtoul(buf, 0, &value))
 297                 return -EINVAL;
 298
 299         value = !!value;
 300         spin_lock_irqsave(hba->host->host_lock, flags);
 301         if (value == hba->monitor.enabled)
 302                 goto out_unlock;
 303
 304         if (!value) {
 305                 memset(&hba->monitor, 0, sizeof(hba->monitor));
 306         } else {
 307                 hba->monitor.enabled = true;
 308                 hba->monitor.enabled_ts = ktime_get();
 309         }
 310
 311 out_unlock:
 312         spin_unlock_irqrestore(hba->host->host_lock, flags);
 313         return count;
 314 }
 315
 316 static ssize_t monitor_chunk_size_show(struct device *dev,
 317                                    struct device_attribute *attr, char *buf)
 318 {
 319         struct ufs_hba *hba = dev_get_drvdata(dev);
 320
 321         return sysfs_emit(buf, "%lu\n", hba->monitor.chunk_size);
 322 }
 323
 324 static ssize_t monitor_chunk_size_store(struct device *dev,
 325                                     struct device_attribute *attr,
 326                                     const char *buf, size_t count)
 327 {
 328         struct ufs_hba *hba = dev_get_drvdata(dev);
 329         unsigned long value, flags;
 330
 331         if (kstrtoul(buf, 0, &value))
 332                 return -EINVAL;
 333
 334         spin_lock_irqsave(hba->host->host_lock, flags);
 335         /* Only allow chunk size change when monitor is disabled */
 336         if (!hba->monitor.enabled)
 337                 hba->monitor.chunk_size = value;
 338         spin_unlock_irqrestore(hba->host->host_lock, flags);
 339         return count;
 340 }
 341
 342 static ssize_t read_total_sectors_show(struct device *dev,
 343                                        struct device_attribute *attr, char *buf)
 344 {
 345         struct ufs_hba *hba = dev_get_drvdata(dev);
 346
 347         return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[READ]);
 348 }
 349
 350 static ssize_t read_total_busy_show(struct device *dev,
 351                                     struct device_attribute *attr, char *buf)
 352 {
 353         struct ufs_hba *hba = dev_get_drvdata(dev);
 354
 355         return sysfs_emit(buf, "%llu\n",
 356                           ktime_to_us(hba->monitor.total_busy[READ]));
 357 }
 358
 359 static ssize_t read_nr_requests_show(struct device *dev,
 360                                      struct device_attribute *attr, char *buf)
 361 {
 362         struct ufs_hba *hba = dev_get_drvdata(dev);
 363
 364         return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[READ]);
 365 }
 366
 367 static ssize_t read_req_latency_avg_show(struct device *dev,
 368                                          struct device_attribute *attr,
 369                                          char *buf)
 370 {
 371         struct ufs_hba *hba = dev_get_drvdata(dev);
 372         struct ufs_hba_monitor *m = &hba->monitor;
 373
 374         return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[READ]),
 375                                                  m->nr_req[READ]));
 376 }
 377
 378 static ssize_t read_req_latency_max_show(struct device *dev,
 379                                          struct device_attribute *attr,
 380                                          char *buf)
 381 {
 382         struct ufs_hba *hba = dev_get_drvdata(dev);
 383
 384         return sysfs_emit(buf, "%llu\n",
 385                           ktime_to_us(hba->monitor.lat_max[READ]));
 386 }
 387
 388 static ssize_t read_req_latency_min_show(struct device *dev,
 389                                          struct device_attribute *attr,
 390                                          char *buf)
 391 {
 392         struct ufs_hba *hba = dev_get_drvdata(dev);
 393
 394         return sysfs_emit(buf, "%llu\n",
 395                           ktime_to_us(hba->monitor.lat_min[READ]));
 396 }
 397
 398 static ssize_t read_req_latency_sum_show(struct device *dev,
 399                                          struct device_attribute *attr,
 400                                          char *buf)
 401 {
 402         struct ufs_hba *hba = dev_get_drvdata(dev);
 403
 404         return sysfs_emit(buf, "%llu\n",
 405                           ktime_to_us(hba->monitor.lat_sum[READ]));
 406 }
 407
 408 static ssize_t write_total_sectors_show(struct device *dev,
 409                                         struct device_attribute *attr,
 410                                         char *buf)
 411 {
 412         struct ufs_hba *hba = dev_get_drvdata(dev);
 413
 414         return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[WRITE]);
 415 }
 416
 417 static ssize_t write_total_busy_show(struct device *dev,
 418                                      struct device_attribute *attr, char *buf)
 419 {
 420         struct ufs_hba *hba = dev_get_drvdata(dev);
 421
 422         return sysfs_emit(buf, "%llu\n",
 423                           ktime_to_us(hba->monitor.total_busy[WRITE]));
 424 }
 425
 426 static ssize_t write_nr_requests_show(struct device *dev,
 427                                       struct device_attribute *attr, char *buf)
 428 {
 429         struct ufs_hba *hba = dev_get_drvdata(dev);
 430
 431         return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[WRITE]);
 432 }
 433
 434 static ssize_t write_req_latency_avg_show(struct device *dev,
 435                                           struct device_attribute *attr,
 436                                           char *buf)
 437 {
 438         struct ufs_hba *hba = dev_get_drvdata(dev);
 439         struct ufs_hba_monitor *m = &hba->monitor;
 440
 441         return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[WRITE]),
 442                                                  m->nr_req[WRITE]));
 443 }
 444
 445 static ssize_t write_req_latency_max_show(struct device *dev,
 446                                           struct device_attribute *attr,
 447                                           char *buf)
 448 {
 449         struct ufs_hba *hba = dev_get_drvdata(dev);
 450
 451         return sysfs_emit(buf, "%llu\n",
 452                           ktime_to_us(hba->monitor.lat_max[WRITE]));
 453 }
 454
 455 static ssize_t write_req_latency_min_show(struct device *dev,
 456                                           struct device_attribute *attr,
 457                                           char *buf)
 458 {
 459         struct ufs_hba *hba = dev_get_drvdata(dev);
 460
 461         return sysfs_emit(buf, "%llu\n",
 462                           ktime_to_us(hba->monitor.lat_min[WRITE]));
 463 }
 464
 465 static ssize_t write_req_latency_sum_show(struct device *dev,
 466                                           struct device_attribute *attr,
 467                                           char *buf)
 468 {
 469         struct ufs_hba *hba = dev_get_drvdata(dev);
 470
 471         return sysfs_emit(buf, "%llu\n",
 472                           ktime_to_us(hba->monitor.lat_sum[WRITE]));
 473 }
 474
 475 static DEVICE_ATTR_RW(monitor_enable);
 476 static DEVICE_ATTR_RW(monitor_chunk_size);
 477 static DEVICE_ATTR_RO(read_total_sectors);
 478 static DEVICE_ATTR_RO(read_total_busy);
 479 static DEVICE_ATTR_RO(read_nr_requests);
 480 static DEVICE_ATTR_RO(read_req_latency_avg);
 481 static DEVICE_ATTR_RO(read_req_latency_max);
 482 static DEVICE_ATTR_RO(read_req_latency_min);
 483 static DEVICE_ATTR_RO(read_req_latency_sum);
 484 static DEVICE_ATTR_RO(write_total_sectors);
 485 static DEVICE_ATTR_RO(write_total_busy);
 486 static DEVICE_ATTR_RO(write_nr_requests);
 487 static DEVICE_ATTR_RO(write_req_latency_avg);
 488 static DEVICE_ATTR_RO(write_req_latency_max);
 489 static DEVICE_ATTR_RO(write_req_latency_min);
 490 static DEVICE_ATTR_RO(write_req_latency_sum);
 491
 492 static struct attribute *ufs_sysfs_monitor_attrs[] = {
 493         &dev_attr_monitor_enable.attr,
 494         &dev_attr_monitor_chunk_size.attr,
 495         &dev_attr_read_total_sectors.attr,
 496         &dev_attr_read_total_busy.attr,
 497         &dev_attr_read_nr_requests.attr,
 498         &dev_attr_read_req_latency_avg.attr,
 499         &dev_attr_read_req_latency_max.attr,
 500         &dev_attr_read_req_latency_min.attr,
 501         &dev_attr_read_req_latency_sum.attr,
 502         &dev_attr_write_total_sectors.attr,
 503         &dev_attr_write_total_busy.attr,
 504         &dev_attr_write_nr_requests.attr,
 505         &dev_attr_write_req_latency_avg.attr,
 506         &dev_attr_write_req_latency_max.attr,
 507         &dev_attr_write_req_latency_min.attr,
 508         &dev_attr_write_req_latency_sum.attr,
 509         NULL
 510 };
 511
 512 static const struct attribute_group ufs_sysfs_monitor_group = {
 513         .name = "monitor",
 514         .attrs = ufs_sysfs_monitor_attrs,
 515 };
 516
 517 static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba,
 518                                   enum desc_idn desc_id,
 519                                   u8 desc_index,
 520                                   u8 param_offset,
 521                                   u8 *sysfs_buf,
 522                                   u8 param_size)
 523 {
 524         u8 desc_buf[8] = {0};
 525         int ret;
 526
 527         if (param_size > 8)
 528                 return -EINVAL;
 529
 530         down(&hba->host_sem);
 531         if (!ufshcd_is_user_access_allowed(hba)) {
 532                 ret = -EBUSY;
 533                 goto out;
 534         }
 535
 536         ufshcd_rpm_get_sync(hba);
 537         ret = ufshcd_read_desc_param(hba, desc_id, desc_index,
 538                                 param_offset, desc_buf, param_size);
 539         ufshcd_rpm_put_sync(hba);
 540         if (ret) {
 541                 ret = -EINVAL;
 542                 goto out;
 543         }
 544
 545         switch (param_size) {
 546         case 1:
 547                 ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf);
 548                 break;
 549         case 2:
 550                 ret = sysfs_emit(sysfs_buf, "0x%04X\n",
 551                         get_unaligned_be16(desc_buf));
 552                 break;
 553         case 4:
 554                 ret = sysfs_emit(sysfs_buf, "0x%08X\n",
 555                         get_unaligned_be32(desc_buf));
 556                 break;
 557         case 8:
 558                 ret = sysfs_emit(sysfs_buf, "0x%016llX\n",
 559                         get_unaligned_be64(desc_buf));
 560                 break;
 561         }
 562
 563 out:
 564         up(&hba->host_sem);
 565         return ret;
 566 }
 567
 568 #define UFS_DESC_PARAM(_name, _puname, _duname, _size)                  \
 569 static ssize_t _name##_show(struct device *dev,                         \
 570         struct device_attribute *attr, char *buf)                       \
 571 {                                                                       \
 572         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 573         return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
 574                 0, _duname##_DESC_PARAM##_puname, buf, _size);          \
 575 }                                                                       \
 576 static DEVICE_ATTR_RO(_name)
 577
 578 #define UFS_DEVICE_DESC_PARAM(_name, _uname, _size)                     \
 579         UFS_DESC_PARAM(_name, _uname, DEVICE, _size)
 580
 581 UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1);
 582 UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1);
 583 UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1);
 584 UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1);
 585 UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1);
 586 UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1);
 587 UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1);
 588 UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1);
 589 UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1);
 590 UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1);
 591 UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1);
 592 UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1);
 593 UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1);
 594 UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1);
 595 UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2);
 596 UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2);
 597 UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2);
 598 UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1);
 599 UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2);
 600 UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1);
 601 UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1);
 602 UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1);
 603 UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2);
 604 UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1);
 605 UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4);
 606 UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1);
 607 UFS_DEVICE_DESC_PARAM(hpb_version, _HPB_VER, 2);
 608 UFS_DEVICE_DESC_PARAM(hpb_control, _HPB_CONTROL, 1);
 609 UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4);
 610 UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1);
 611 UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1);
 612 UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4);
 613
 614 static struct attribute *ufs_sysfs_device_descriptor[] = {
 615         &dev_attr_device_type.attr,
 616         &dev_attr_device_class.attr,
 617         &dev_attr_device_sub_class.attr,
 618         &dev_attr_protocol.attr,
 619         &dev_attr_number_of_luns.attr,
 620         &dev_attr_number_of_wluns.attr,
 621         &dev_attr_boot_enable.attr,
 622         &dev_attr_descriptor_access_enable.attr,
 623         &dev_attr_initial_power_mode.attr,
 624         &dev_attr_high_priority_lun.attr,
 625         &dev_attr_secure_removal_type.attr,
 626         &dev_attr_support_security_lun.attr,
 627         &dev_attr_bkops_termination_latency.attr,
 628         &dev_attr_initial_active_icc_level.attr,
 629         &dev_attr_specification_version.attr,
 630         &dev_attr_manufacturing_date.attr,
 631         &dev_attr_manufacturer_id.attr,
 632         &dev_attr_rtt_capability.attr,
 633         &dev_attr_rtc_update.attr,
 634         &dev_attr_ufs_features.attr,
 635         &dev_attr_ffu_timeout.attr,
 636         &dev_attr_queue_depth.attr,
 637         &dev_attr_device_version.attr,
 638         &dev_attr_number_of_secure_wpa.attr,
 639         &dev_attr_psa_max_data_size.attr,
 640         &dev_attr_psa_state_timeout.attr,
 641         &dev_attr_hpb_version.attr,
 642         &dev_attr_hpb_control.attr,
 643         &dev_attr_ext_feature_sup.attr,
 644         &dev_attr_wb_presv_us_en.attr,
 645         &dev_attr_wb_type.attr,
 646         &dev_attr_wb_shared_alloc_units.attr,
 647         NULL,
 648 };
 649
 650 static const struct attribute_group ufs_sysfs_device_descriptor_group = {
 651         .name = "device_descriptor",
 652         .attrs = ufs_sysfs_device_descriptor,
 653 };
 654
 655 #define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size)               \
 656         UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size)
 657
 658 UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2);
 659 UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2);
 660
 661 static struct attribute *ufs_sysfs_interconnect_descriptor[] = {
 662         &dev_attr_unipro_version.attr,
 663         &dev_attr_mphy_version.attr,
 664         NULL,
 665 };
 666
 667 static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = {
 668         .name = "interconnect_descriptor",
 669         .attrs = ufs_sysfs_interconnect_descriptor,
 670 };
 671
 672 #define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size)                   \
 673         UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size)
 674
 675 UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8);
 676 UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1);
 677 UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4);
 678 UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1);
 679 UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1);
 680 UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1);
 681 UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1);
 682 UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1);
 683 UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1);
 684 UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1);
 685 UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1);
 686 UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1);
 687 UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1);
 688 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1);
 689 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1);
 690 UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1);
 691 UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2);
 692 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units,
 693         _SCM_MAX_NUM_UNITS, 4);
 694 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor,
 695         _SCM_CAP_ADJ_FCTR, 2);
 696 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units,
 697         _NPM_MAX_NUM_UNITS, 4);
 698 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor,
 699         _NPM_CAP_ADJ_FCTR, 2);
 700 UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units,
 701         _ENM1_MAX_NUM_UNITS, 4);
 702 UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor,
 703         _ENM1_CAP_ADJ_FCTR, 2);
 704 UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units,
 705         _ENM2_MAX_NUM_UNITS, 4);
 706 UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor,
 707         _ENM2_CAP_ADJ_FCTR, 2);
 708 UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units,
 709         _ENM3_MAX_NUM_UNITS, 4);
 710 UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor,
 711         _ENM3_CAP_ADJ_FCTR, 2);
 712 UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units,
 713         _ENM4_MAX_NUM_UNITS, 4);
 714 UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor,
 715         _ENM4_CAP_ADJ_FCTR, 2);
 716 UFS_GEOMETRY_DESC_PARAM(hpb_region_size, _HPB_REGION_SIZE, 1);
 717 UFS_GEOMETRY_DESC_PARAM(hpb_number_lu, _HPB_NUMBER_LU, 1);
 718 UFS_GEOMETRY_DESC_PARAM(hpb_subregion_size, _HPB_SUBREGION_SIZE, 1);
 719 UFS_GEOMETRY_DESC_PARAM(hpb_max_active_regions, _HPB_MAX_ACTIVE_REGS, 2);
 720 UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4);
 721 UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1);
 722 UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1);
 723 UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1);
 724 UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1);
 725
 726
 727 static struct attribute *ufs_sysfs_geometry_descriptor[] = {
 728         &dev_attr_raw_device_capacity.attr,
 729         &dev_attr_max_number_of_luns.attr,
 730         &dev_attr_segment_size.attr,
 731         &dev_attr_allocation_unit_size.attr,
 732         &dev_attr_min_addressable_block_size.attr,
 733         &dev_attr_optimal_read_block_size.attr,
 734         &dev_attr_optimal_write_block_size.attr,
 735         &dev_attr_max_in_buffer_size.attr,
 736         &dev_attr_max_out_buffer_size.attr,
 737         &dev_attr_rpmb_rw_size.attr,
 738         &dev_attr_dyn_capacity_resource_policy.attr,
 739         &dev_attr_data_ordering.attr,
 740         &dev_attr_max_number_of_contexts.attr,
 741         &dev_attr_sys_data_tag_unit_size.attr,
 742         &dev_attr_sys_data_tag_resource_size.attr,
 743         &dev_attr_secure_removal_types.attr,
 744         &dev_attr_memory_types.attr,
 745         &dev_attr_sys_code_memory_max_alloc_units.attr,
 746         &dev_attr_sys_code_memory_capacity_adjustment_factor.attr,
 747         &dev_attr_non_persist_memory_max_alloc_units.attr,
 748         &dev_attr_non_persist_memory_capacity_adjustment_factor.attr,
 749         &dev_attr_enh1_memory_max_alloc_units.attr,
 750         &dev_attr_enh1_memory_capacity_adjustment_factor.attr,
 751         &dev_attr_enh2_memory_max_alloc_units.attr,
 752         &dev_attr_enh2_memory_capacity_adjustment_factor.attr,
 753         &dev_attr_enh3_memory_max_alloc_units.attr,
 754         &dev_attr_enh3_memory_capacity_adjustment_factor.attr,
 755         &dev_attr_enh4_memory_max_alloc_units.attr,
 756         &dev_attr_enh4_memory_capacity_adjustment_factor.attr,
 757         &dev_attr_hpb_region_size.attr,
 758         &dev_attr_hpb_number_lu.attr,
 759         &dev_attr_hpb_subregion_size.attr,
 760         &dev_attr_hpb_max_active_regions.attr,
 761         &dev_attr_wb_max_alloc_units.attr,
 762         &dev_attr_wb_max_wb_luns.attr,
 763         &dev_attr_wb_buff_cap_adj.attr,
 764         &dev_attr_wb_sup_red_type.attr,
 765         &dev_attr_wb_sup_wb_type.attr,
 766         NULL,
 767 };
 768
 769 static const struct attribute_group ufs_sysfs_geometry_descriptor_group = {
 770         .name = "geometry_descriptor",
 771         .attrs = ufs_sysfs_geometry_descriptor,
 772 };
 773
 774 #define UFS_HEALTH_DESC_PARAM(_name, _uname, _size)                     \
 775         UFS_DESC_PARAM(_name, _uname, HEALTH, _size)
 776
 777 UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1);
 778 UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1);
 779 UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1);
 780
 781 static struct attribute *ufs_sysfs_health_descriptor[] = {
 782         &dev_attr_eol_info.attr,
 783         &dev_attr_life_time_estimation_a.attr,
 784         &dev_attr_life_time_estimation_b.attr,
 785         NULL,
 786 };
 787
 788 static const struct attribute_group ufs_sysfs_health_descriptor_group = {
 789         .name = "health_descriptor",
 790         .attrs = ufs_sysfs_health_descriptor,
 791 };
 792
 793 #define UFS_POWER_DESC_PARAM(_name, _uname, _index)                     \
 794 static ssize_t _name##_index##_show(struct device *dev,                 \
 795         struct device_attribute *attr, char *buf)                       \
 796 {                                                                       \
 797         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 798         return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0,  \
 799                 PWR_DESC##_uname##_0 + _index * 2, buf, 2);             \
 800 }                                                                       \
 801 static DEVICE_ATTR_RO(_name##_index)
 802
 803 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0);
 804 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1);
 805 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2);
 806 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3);
 807 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4);
 808 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5);
 809 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6);
 810 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7);
 811 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8);
 812 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9);
 813 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10);
 814 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11);
 815 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12);
 816 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13);
 817 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14);
 818 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15);
 819 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0);
 820 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1);
 821 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2);
 822 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3);
 823 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4);
 824 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5);
 825 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6);
 826 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7);
 827 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8);
 828 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9);
 829 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10);
 830 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11);
 831 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12);
 832 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13);
 833 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14);
 834 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15);
 835 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0);
 836 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1);
 837 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2);
 838 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3);
 839 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4);
 840 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5);
 841 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6);
 842 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7);
 843 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8);
 844 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9);
 845 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10);
 846 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11);
 847 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12);
 848 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13);
 849 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14);
 850 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15);
 851
 852 static struct attribute *ufs_sysfs_power_descriptor[] = {
 853         &dev_attr_active_icc_levels_vcc0.attr,
 854         &dev_attr_active_icc_levels_vcc1.attr,
 855         &dev_attr_active_icc_levels_vcc2.attr,
 856         &dev_attr_active_icc_levels_vcc3.attr,
 857         &dev_attr_active_icc_levels_vcc4.attr,
 858         &dev_attr_active_icc_levels_vcc5.attr,
 859         &dev_attr_active_icc_levels_vcc6.attr,
 860         &dev_attr_active_icc_levels_vcc7.attr,
 861         &dev_attr_active_icc_levels_vcc8.attr,
 862         &dev_attr_active_icc_levels_vcc9.attr,
 863         &dev_attr_active_icc_levels_vcc10.attr,
 864         &dev_attr_active_icc_levels_vcc11.attr,
 865         &dev_attr_active_icc_levels_vcc12.attr,
 866         &dev_attr_active_icc_levels_vcc13.attr,
 867         &dev_attr_active_icc_levels_vcc14.attr,
 868         &dev_attr_active_icc_levels_vcc15.attr,
 869         &dev_attr_active_icc_levels_vccq0.attr,
 870         &dev_attr_active_icc_levels_vccq1.attr,
 871         &dev_attr_active_icc_levels_vccq2.attr,
 872         &dev_attr_active_icc_levels_vccq3.attr,
 873         &dev_attr_active_icc_levels_vccq4.attr,
 874         &dev_attr_active_icc_levels_vccq5.attr,
 875         &dev_attr_active_icc_levels_vccq6.attr,
 876         &dev_attr_active_icc_levels_vccq7.attr,
 877         &dev_attr_active_icc_levels_vccq8.attr,
 878         &dev_attr_active_icc_levels_vccq9.attr,
 879         &dev_attr_active_icc_levels_vccq10.attr,
 880         &dev_attr_active_icc_levels_vccq11.attr,
 881         &dev_attr_active_icc_levels_vccq12.attr,
 882         &dev_attr_active_icc_levels_vccq13.attr,
 883         &dev_attr_active_icc_levels_vccq14.attr,
 884         &dev_attr_active_icc_levels_vccq15.attr,
 885         &dev_attr_active_icc_levels_vccq20.attr,
 886         &dev_attr_active_icc_levels_vccq21.attr,
 887         &dev_attr_active_icc_levels_vccq22.attr,
 888         &dev_attr_active_icc_levels_vccq23.attr,
 889         &dev_attr_active_icc_levels_vccq24.attr,
 890         &dev_attr_active_icc_levels_vccq25.attr,
 891         &dev_attr_active_icc_levels_vccq26.attr,
 892         &dev_attr_active_icc_levels_vccq27.attr,
 893         &dev_attr_active_icc_levels_vccq28.attr,
 894         &dev_attr_active_icc_levels_vccq29.attr,
 895         &dev_attr_active_icc_levels_vccq210.attr,
 896         &dev_attr_active_icc_levels_vccq211.attr,
 897         &dev_attr_active_icc_levels_vccq212.attr,
 898         &dev_attr_active_icc_levels_vccq213.attr,
 899         &dev_attr_active_icc_levels_vccq214.attr,
 900         &dev_attr_active_icc_levels_vccq215.attr,
 901         NULL,
 902 };
 903
 904 static const struct attribute_group ufs_sysfs_power_descriptor_group = {
 905         .name = "power_descriptor",
 906         .attrs = ufs_sysfs_power_descriptor,
 907 };
 908
 909 #define UFS_STRING_DESCRIPTOR(_name, _pname)                            \
 910 static ssize_t _name##_show(struct device *dev,                         \
 911         struct device_attribute *attr, char *buf)                       \
 912 {                                                                       \
 913         u8 index;                                                       \
 914         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 915         int ret;                                                        \
 916         int desc_len = QUERY_DESC_MAX_SIZE;                             \
 917         u8 *desc_buf;                                                   \
 918                                                                         \
 919         down(&hba->host_sem);                                           \
 920         if (!ufshcd_is_user_access_allowed(hba)) {                      \
 921                 up(&hba->host_sem);                                     \
 922                 return -EBUSY;                                          \
 923         }                                                               \
 924         desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC);            \
 925         if (!desc_buf) {                                                \
 926                 up(&hba->host_sem);                                     \
 927                 return -ENOMEM;                                         \
 928         }                                                               \
 929         ufshcd_rpm_get_sync(hba);                                       \
 930         ret = ufshcd_query_descriptor_retry(hba,                        \
 931                 UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE,     \
 932                 0, 0, desc_buf, &desc_len);                             \
 933         if (ret) {                                                      \
 934                 ret = -EINVAL;                                          \
 935                 goto out;                                               \
 936         }                                                               \
 937         index = desc_buf[DEVICE_DESC_PARAM##_pname];                    \
 938         kfree(desc_buf);                                                \
 939         desc_buf = NULL;                                                \
 940         ret = ufshcd_read_string_desc(hba, index, &desc_buf,            \
 941                                       SD_ASCII_STD);                    \
 942         if (ret < 0)                                                    \
 943                 goto out;                                               \
 944         ret = sysfs_emit(buf, "%s\n", desc_buf);                        \
 945 out:                                                                    \
 946         ufshcd_rpm_put_sync(hba);                                       \
 947         kfree(desc_buf);                                                \
 948         up(&hba->host_sem);                                             \
 949         return ret;                                                     \
 950 }                                                                       \
 951 static DEVICE_ATTR_RO(_name)
 952
 953 UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME);
 954 UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME);
 955 UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID);
 956 UFS_STRING_DESCRIPTOR(serial_number, _SN);
 957 UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV);
 958
 959 static struct attribute *ufs_sysfs_string_descriptors[] = {
 960         &dev_attr_manufacturer_name.attr,
 961         &dev_attr_product_name.attr,
 962         &dev_attr_oem_id.attr,
 963         &dev_attr_serial_number.attr,
 964         &dev_attr_product_revision.attr,
 965         NULL,
 966 };
 967
 968 static const struct attribute_group ufs_sysfs_string_descriptors_group = {
 969         .name = "string_descriptors",
 970         .attrs = ufs_sysfs_string_descriptors,
 971 };
 972
 973 static inline bool ufshcd_is_wb_flags(enum flag_idn idn)
 974 {
 975         return idn >= QUERY_FLAG_IDN_WB_EN &&
 976                 idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8;
 977 }
 978
 979 #define UFS_FLAG(_name, _uname)                                         \
 980 static ssize_t _name##_show(struct device *dev,                         \
 981         struct device_attribute *attr, char *buf)                       \
 982 {                                                                       \
 983         bool flag;                                                      \
 984         u8 index = 0;                                                   \
 985         int ret;                                                        \
 986         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 987                                                                         \
 988         down(&hba->host_sem);                                           \
 989         if (!ufshcd_is_user_access_allowed(hba)) {                      \
 990                 up(&hba->host_sem);                                     \
 991                 return -EBUSY;                                          \
 992         }                                                               \
 993         if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname))                 \
 994                 index = ufshcd_wb_get_query_index(hba);                 \
 995         ufshcd_rpm_get_sync(hba);                                       \
 996         ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG,       \
 997                 QUERY_FLAG_IDN##_uname, index, &flag);                  \
 998         ufshcd_rpm_put_sync(hba);                                       \
 999         if (ret) {                                                      \
1000                 ret = -EINVAL;                                          \
1001                 goto out;                                               \
1002         }                                                               \
1003         ret = sysfs_emit(buf, "%s\n", flag ? "true" : "false");         \
1004 out:                                                                    \
1005         up(&hba->host_sem);                                             \
1006         return ret;                                                     \
1007 }                                                                       \
1008 static DEVICE_ATTR_RO(_name)
1009
1010 UFS_FLAG(device_init, _FDEVICEINIT);
1011 UFS_FLAG(permanent_wpe, _PERMANENT_WPE);
1012 UFS_FLAG(power_on_wpe, _PWR_ON_WPE);
1013 UFS_FLAG(bkops_enable, _BKOPS_EN);
1014 UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE);
1015 UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL);
1016 UFS_FLAG(busy_rtc, _BUSY_RTC);
1017 UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE);
1018 UFS_FLAG(wb_enable, _WB_EN);
1019 UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN);
1020 UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8);
1021 UFS_FLAG(hpb_enable, _HPB_EN);
1022
1023 static struct attribute *ufs_sysfs_device_flags[] = {
1024         &dev_attr_device_init.attr,
1025         &dev_attr_permanent_wpe.attr,
1026         &dev_attr_power_on_wpe.attr,
1027         &dev_attr_bkops_enable.attr,
1028         &dev_attr_life_span_mode_enable.attr,
1029         &dev_attr_phy_resource_removal.attr,
1030         &dev_attr_busy_rtc.attr,
1031         &dev_attr_disable_fw_update.attr,
1032         &dev_attr_wb_enable.attr,
1033         &dev_attr_wb_flush_en.attr,
1034         &dev_attr_wb_flush_during_h8.attr,
1035         &dev_attr_hpb_enable.attr,
1036         NULL,
1037 };
1038
1039 static const struct attribute_group ufs_sysfs_flags_group = {
1040         .name = "flags",
1041         .attrs = ufs_sysfs_device_flags,
1042 };
1043
1044 static inline bool ufshcd_is_wb_attrs(enum attr_idn idn)
1045 {
1046         return idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS &&
1047                 idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE;
1048 }
1049
1050 #define UFS_ATTRIBUTE(_name, _uname)                                    \
1051 static ssize_t _name##_show(struct device *dev,                         \
1052         struct device_attribute *attr, char *buf)                       \
1053 {                                                                       \
1054         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
1055         u32 value;                                                      \
1056         int ret;                                                        \
1057         u8 index = 0;                                                   \
1058                                                                         \
1059         down(&hba->host_sem);                                           \
1060         if (!ufshcd_is_user_access_allowed(hba)) {                      \
1061                 up(&hba->host_sem);                                     \
1062                 return -EBUSY;                                          \
1063         }                                                               \
1064         if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname))                 \
1065                 index = ufshcd_wb_get_query_index(hba);                 \
1066         ufshcd_rpm_get_sync(hba);                                       \
1067         ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,       \
1068                 QUERY_ATTR_IDN##_uname, index, 0, &value);              \
1069         ufshcd_rpm_put_sync(hba);                                       \
1070         if (ret) {                                                      \
1071                 ret = -EINVAL;                                          \
1072                 goto out;                                               \
1073         }                                                               \
1074         ret = sysfs_emit(buf, "0x%08X\n", value);                       \
1075 out:                                                                    \
1076         up(&hba->host_sem);                                             \
1077         return ret;                                                     \
1078 }                                                                       \
1079 static DEVICE_ATTR_RO(_name)
1080
1081 UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN);
1082 UFS_ATTRIBUTE(max_data_size_hpb_single_cmd, _MAX_HPB_SINGLE_CMD);
1083 UFS_ATTRIBUTE(current_power_mode, _POWER_MODE);
1084 UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL);
1085 UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN);
1086 UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS);
1087 UFS_ATTRIBUTE(purge_status, _PURGE_STATUS);
1088 UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN);
1089 UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT);
1090 UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ);
1091 UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK);
1092 UFS_ATTRIBUTE(max_number_of_rtt, _MAX_NUM_OF_RTT);
1093 UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL);
1094 UFS_ATTRIBUTE(exception_event_status, _EE_STATUS);
1095 UFS_ATTRIBUTE(ffu_status, _FFU_STATUS);
1096 UFS_ATTRIBUTE(psa_state, _PSA_STATE);
1097 UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE);
1098 UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS);
1099 UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE);
1100 UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST);
1101 UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE);
1102
1103
1104 static struct attribute *ufs_sysfs_attributes[] = {
1105         &dev_attr_boot_lun_enabled.attr,
1106         &dev_attr_max_data_size_hpb_single_cmd.attr,
1107         &dev_attr_current_power_mode.attr,
1108         &dev_attr_active_icc_level.attr,
1109         &dev_attr_ooo_data_enabled.attr,
1110         &dev_attr_bkops_status.attr,
1111         &dev_attr_purge_status.attr,
1112         &dev_attr_max_data_in_size.attr,
1113         &dev_attr_max_data_out_size.attr,
1114         &dev_attr_reference_clock_frequency.attr,
1115         &dev_attr_configuration_descriptor_lock.attr,
1116         &dev_attr_max_number_of_rtt.attr,
1117         &dev_attr_exception_event_control.attr,
1118         &dev_attr_exception_event_status.attr,
1119         &dev_attr_ffu_status.attr,
1120         &dev_attr_psa_state.attr,
1121         &dev_attr_psa_data_size.attr,
1122         &dev_attr_wb_flush_status.attr,
1123         &dev_attr_wb_avail_buf.attr,
1124         &dev_attr_wb_life_time_est.attr,
1125         &dev_attr_wb_cur_buf.attr,
1126         NULL,
1127 };
1128
1129 static const struct attribute_group ufs_sysfs_attributes_group = {
1130         .name = "attributes",
1131         .attrs = ufs_sysfs_attributes,
1132 };
1133
1134 static const struct attribute_group *ufs_sysfs_groups[] = {
1135         &ufs_sysfs_default_group,
1136         &ufs_sysfs_monitor_group,
1137         &ufs_sysfs_device_descriptor_group,
1138         &ufs_sysfs_interconnect_descriptor_group,
1139         &ufs_sysfs_geometry_descriptor_group,
1140         &ufs_sysfs_health_descriptor_group,
1141         &ufs_sysfs_power_descriptor_group,
1142         &ufs_sysfs_string_descriptors_group,
1143         &ufs_sysfs_flags_group,
1144         &ufs_sysfs_attributes_group,
1145         NULL,
1146 };
1147
1148 #define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size)             \
1149 static ssize_t _pname##_show(struct device *dev,                        \
1150         struct device_attribute *attr, char *buf)                       \
1151 {                                                                       \
1152         struct scsi_device *sdev = to_scsi_device(dev);                 \
1153         struct ufs_hba *hba = shost_priv(sdev->host);                   \
1154         u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);                    \
1155         if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun,            \
1156                                 _duname##_DESC_PARAM##_puname))         \
1157                 return -EINVAL;                                         \
1158         return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
1159                 lun, _duname##_DESC_PARAM##_puname, buf, _size);        \
1160 }                                                                       \
1161 static DEVICE_ATTR_RO(_pname)
1162
1163 #define UFS_UNIT_DESC_PARAM(_name, _uname, _size)                       \
1164         UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size)
1165
1166 UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1);
1167 UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1);
1168 UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1);
1169 UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1);
1170 UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1);
1171 UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1);
1172 UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1);
1173 UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1);
1174 UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8);
1175 UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4);
1176 UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1);
1177 UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8);
1178 UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2);
1179 UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1);
1180 UFS_UNIT_DESC_PARAM(hpb_lu_max_active_regions, _HPB_LU_MAX_ACTIVE_RGNS, 2);
1181 UFS_UNIT_DESC_PARAM(hpb_pinned_region_start_offset, _HPB_PIN_RGN_START_OFF, 2);
1182 UFS_UNIT_DESC_PARAM(hpb_number_pinned_regions, _HPB_NUM_PIN_RGNS, 2);
1183 UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4);
1184
1185 static struct attribute *ufs_sysfs_unit_descriptor[] = {
1186         &dev_attr_lu_enable.attr,
1187         &dev_attr_boot_lun_id.attr,
1188         &dev_attr_lun_write_protect.attr,
1189         &dev_attr_lun_queue_depth.attr,
1190         &dev_attr_psa_sensitive.attr,
1191         &dev_attr_lun_memory_type.attr,
1192         &dev_attr_data_reliability.attr,
1193         &dev_attr_logical_block_size.attr,
1194         &dev_attr_logical_block_count.attr,
1195         &dev_attr_erase_block_size.attr,
1196         &dev_attr_provisioning_type.attr,
1197         &dev_attr_physical_memory_resourse_count.attr,
1198         &dev_attr_context_capabilities.attr,
1199         &dev_attr_large_unit_granularity.attr,
1200         &dev_attr_hpb_lu_max_active_regions.attr,
1201         &dev_attr_hpb_pinned_region_start_offset.attr,
1202         &dev_attr_hpb_number_pinned_regions.attr,
1203         &dev_attr_wb_buf_alloc_units.attr,
1204         NULL,
1205 };
1206
1207 const struct attribute_group ufs_sysfs_unit_descriptor_group = {
1208         .name = "unit_descriptor",
1209         .attrs = ufs_sysfs_unit_descriptor,
1210 };
1211
1212 static ssize_t dyn_cap_needed_attribute_show(struct device *dev,
1213         struct device_attribute *attr, char *buf)
1214 {
1215         u32 value;
1216         struct scsi_device *sdev = to_scsi_device(dev);
1217         struct ufs_hba *hba = shost_priv(sdev->host);
1218         u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
1219         int ret;
1220
1221         down(&hba->host_sem);
1222         if (!ufshcd_is_user_access_allowed(hba)) {
1223                 ret = -EBUSY;
1224                 goto out;
1225         }
1226
1227         ufshcd_rpm_get_sync(hba);
1228         ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,
1229                 QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value);
1230         ufshcd_rpm_put_sync(hba);
1231         if (ret) {
1232                 ret = -EINVAL;
1233                 goto out;
1234         }
1235
1236         ret = sysfs_emit(buf, "0x%08X\n", value);
1237
1238 out:
1239         up(&hba->host_sem);
1240         return ret;
1241 }
1242 static DEVICE_ATTR_RO(dyn_cap_needed_attribute);
1243
1244 static struct attribute *ufs_sysfs_lun_attributes[] = {
1245         &dev_attr_dyn_cap_needed_attribute.attr,
1246         NULL,
1247 };
1248
1249 const struct attribute_group ufs_sysfs_lun_attributes_group = {
1250         .attrs = ufs_sysfs_lun_attributes,
1251 };
1252
1253 void ufs_sysfs_add_nodes(struct device *dev)
1254 {
1255         int ret;
1256
1257         ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups);
1258         if (ret)
1259                 dev_err(dev,
1260                         "%s: sysfs groups creation failed (err = %d)\n",
1261                         __func__, ret);
1262 }
1263
1264 void ufs_sysfs_remove_nodes(struct device *dev)
1265 {
1266         sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups);
1267 }