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 *ufschd_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 *ufschd_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", ufschd_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", ufschd_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", ufschd_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", ufschd_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         pm_runtime_get_sync(hba->dev);
 249         res = ufshcd_wb_ctrl(hba, wb_enable);
 250         pm_runtime_put_sync(hba->dev);
 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 ufs_sysfs_read_desc_param(struct ufs_hba *hba,
 282                                   enum desc_idn desc_id,
 283                                   u8 desc_index,
 284                                   u8 param_offset,
 285                                   u8 *sysfs_buf,
 286                                   u8 param_size)
 287 {
 288         u8 desc_buf[8] = {0};
 289         int ret;
 290
 291         if (param_size > 8)
 292                 return -EINVAL;
 293
 294         down(&hba->host_sem);
 295         if (!ufshcd_is_user_access_allowed(hba)) {
 296                 ret = -EBUSY;
 297                 goto out;
 298         }
 299
 300         pm_runtime_get_sync(hba->dev);
 301         ret = ufshcd_read_desc_param(hba, desc_id, desc_index,
 302                                 param_offset, desc_buf, param_size);
 303         pm_runtime_put_sync(hba->dev);
 304         if (ret) {
 305                 ret = -EINVAL;
 306                 goto out;
 307         }
 308
 309         switch (param_size) {
 310         case 1:
 311                 ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf);
 312                 break;
 313         case 2:
 314                 ret = sysfs_emit(sysfs_buf, "0x%04X\n",
 315                         get_unaligned_be16(desc_buf));
 316                 break;
 317         case 4:
 318                 ret = sysfs_emit(sysfs_buf, "0x%08X\n",
 319                         get_unaligned_be32(desc_buf));
 320                 break;
 321         case 8:
 322                 ret = sysfs_emit(sysfs_buf, "0x%016llX\n",
 323                         get_unaligned_be64(desc_buf));
 324                 break;
 325         }
 326
 327 out:
 328         up(&hba->host_sem);
 329         return ret;
 330 }
 331
 332 #define UFS_DESC_PARAM(_name, _puname, _duname, _size)                  \
 333 static ssize_t _name##_show(struct device *dev,                         \
 334         struct device_attribute *attr, char *buf)                       \
 335 {                                                                       \
 336         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 337         return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
 338                 0, _duname##_DESC_PARAM##_puname, buf, _size);          \
 339 }                                                                       \
 340 static DEVICE_ATTR_RO(_name)
 341
 342 #define UFS_DEVICE_DESC_PARAM(_name, _uname, _size)                     \
 343         UFS_DESC_PARAM(_name, _uname, DEVICE, _size)
 344
 345 UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1);
 346 UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1);
 347 UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1);
 348 UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1);
 349 UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1);
 350 UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1);
 351 UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1);
 352 UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1);
 353 UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1);
 354 UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1);
 355 UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1);
 356 UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1);
 357 UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1);
 358 UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1);
 359 UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2);
 360 UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2);
 361 UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2);
 362 UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1);
 363 UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2);
 364 UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1);
 365 UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1);
 366 UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1);
 367 UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2);
 368 UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1);
 369 UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4);
 370 UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1);
 371 UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4);
 372 UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1);
 373 UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1);
 374 UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4);
 375
 376 static struct attribute *ufs_sysfs_device_descriptor[] = {
 377         &dev_attr_device_type.attr,
 378         &dev_attr_device_class.attr,
 379         &dev_attr_device_sub_class.attr,
 380         &dev_attr_protocol.attr,
 381         &dev_attr_number_of_luns.attr,
 382         &dev_attr_number_of_wluns.attr,
 383         &dev_attr_boot_enable.attr,
 384         &dev_attr_descriptor_access_enable.attr,
 385         &dev_attr_initial_power_mode.attr,
 386         &dev_attr_high_priority_lun.attr,
 387         &dev_attr_secure_removal_type.attr,
 388         &dev_attr_support_security_lun.attr,
 389         &dev_attr_bkops_termination_latency.attr,
 390         &dev_attr_initial_active_icc_level.attr,
 391         &dev_attr_specification_version.attr,
 392         &dev_attr_manufacturing_date.attr,
 393         &dev_attr_manufacturer_id.attr,
 394         &dev_attr_rtt_capability.attr,
 395         &dev_attr_rtc_update.attr,
 396         &dev_attr_ufs_features.attr,
 397         &dev_attr_ffu_timeout.attr,
 398         &dev_attr_queue_depth.attr,
 399         &dev_attr_device_version.attr,
 400         &dev_attr_number_of_secure_wpa.attr,
 401         &dev_attr_psa_max_data_size.attr,
 402         &dev_attr_psa_state_timeout.attr,
 403         &dev_attr_ext_feature_sup.attr,
 404         &dev_attr_wb_presv_us_en.attr,
 405         &dev_attr_wb_type.attr,
 406         &dev_attr_wb_shared_alloc_units.attr,
 407         NULL,
 408 };
 409
 410 static const struct attribute_group ufs_sysfs_device_descriptor_group = {
 411         .name = "device_descriptor",
 412         .attrs = ufs_sysfs_device_descriptor,
 413 };
 414
 415 #define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size)               \
 416         UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size)
 417
 418 UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2);
 419 UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2);
 420
 421 static struct attribute *ufs_sysfs_interconnect_descriptor[] = {
 422         &dev_attr_unipro_version.attr,
 423         &dev_attr_mphy_version.attr,
 424         NULL,
 425 };
 426
 427 static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = {
 428         .name = "interconnect_descriptor",
 429         .attrs = ufs_sysfs_interconnect_descriptor,
 430 };
 431
 432 #define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size)                   \
 433         UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size)
 434
 435 UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8);
 436 UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1);
 437 UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4);
 438 UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1);
 439 UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1);
 440 UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1);
 441 UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1);
 442 UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1);
 443 UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1);
 444 UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1);
 445 UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1);
 446 UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1);
 447 UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1);
 448 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1);
 449 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1);
 450 UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1);
 451 UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2);
 452 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units,
 453         _SCM_MAX_NUM_UNITS, 4);
 454 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor,
 455         _SCM_CAP_ADJ_FCTR, 2);
 456 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units,
 457         _NPM_MAX_NUM_UNITS, 4);
 458 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor,
 459         _NPM_CAP_ADJ_FCTR, 2);
 460 UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units,
 461         _ENM1_MAX_NUM_UNITS, 4);
 462 UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor,
 463         _ENM1_CAP_ADJ_FCTR, 2);
 464 UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units,
 465         _ENM2_MAX_NUM_UNITS, 4);
 466 UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor,
 467         _ENM2_CAP_ADJ_FCTR, 2);
 468 UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units,
 469         _ENM3_MAX_NUM_UNITS, 4);
 470 UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor,
 471         _ENM3_CAP_ADJ_FCTR, 2);
 472 UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units,
 473         _ENM4_MAX_NUM_UNITS, 4);
 474 UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor,
 475         _ENM4_CAP_ADJ_FCTR, 2);
 476 UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4);
 477 UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1);
 478 UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1);
 479 UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1);
 480 UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1);
 481
 482
 483 static struct attribute *ufs_sysfs_geometry_descriptor[] = {
 484         &dev_attr_raw_device_capacity.attr,
 485         &dev_attr_max_number_of_luns.attr,
 486         &dev_attr_segment_size.attr,
 487         &dev_attr_allocation_unit_size.attr,
 488         &dev_attr_min_addressable_block_size.attr,
 489         &dev_attr_optimal_read_block_size.attr,
 490         &dev_attr_optimal_write_block_size.attr,
 491         &dev_attr_max_in_buffer_size.attr,
 492         &dev_attr_max_out_buffer_size.attr,
 493         &dev_attr_rpmb_rw_size.attr,
 494         &dev_attr_dyn_capacity_resource_policy.attr,
 495         &dev_attr_data_ordering.attr,
 496         &dev_attr_max_number_of_contexts.attr,
 497         &dev_attr_sys_data_tag_unit_size.attr,
 498         &dev_attr_sys_data_tag_resource_size.attr,
 499         &dev_attr_secure_removal_types.attr,
 500         &dev_attr_memory_types.attr,
 501         &dev_attr_sys_code_memory_max_alloc_units.attr,
 502         &dev_attr_sys_code_memory_capacity_adjustment_factor.attr,
 503         &dev_attr_non_persist_memory_max_alloc_units.attr,
 504         &dev_attr_non_persist_memory_capacity_adjustment_factor.attr,
 505         &dev_attr_enh1_memory_max_alloc_units.attr,
 506         &dev_attr_enh1_memory_capacity_adjustment_factor.attr,
 507         &dev_attr_enh2_memory_max_alloc_units.attr,
 508         &dev_attr_enh2_memory_capacity_adjustment_factor.attr,
 509         &dev_attr_enh3_memory_max_alloc_units.attr,
 510         &dev_attr_enh3_memory_capacity_adjustment_factor.attr,
 511         &dev_attr_enh4_memory_max_alloc_units.attr,
 512         &dev_attr_enh4_memory_capacity_adjustment_factor.attr,
 513         &dev_attr_wb_max_alloc_units.attr,
 514         &dev_attr_wb_max_wb_luns.attr,
 515         &dev_attr_wb_buff_cap_adj.attr,
 516         &dev_attr_wb_sup_red_type.attr,
 517         &dev_attr_wb_sup_wb_type.attr,
 518         NULL,
 519 };
 520
 521 static const struct attribute_group ufs_sysfs_geometry_descriptor_group = {
 522         .name = "geometry_descriptor",
 523         .attrs = ufs_sysfs_geometry_descriptor,
 524 };
 525
 526 #define UFS_HEALTH_DESC_PARAM(_name, _uname, _size)                     \
 527         UFS_DESC_PARAM(_name, _uname, HEALTH, _size)
 528
 529 UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1);
 530 UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1);
 531 UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1);
 532
 533 static struct attribute *ufs_sysfs_health_descriptor[] = {
 534         &dev_attr_eol_info.attr,
 535         &dev_attr_life_time_estimation_a.attr,
 536         &dev_attr_life_time_estimation_b.attr,
 537         NULL,
 538 };
 539
 540 static const struct attribute_group ufs_sysfs_health_descriptor_group = {
 541         .name = "health_descriptor",
 542         .attrs = ufs_sysfs_health_descriptor,
 543 };
 544
 545 #define UFS_POWER_DESC_PARAM(_name, _uname, _index)                     \
 546 static ssize_t _name##_index##_show(struct device *dev,                 \
 547         struct device_attribute *attr, char *buf)                       \
 548 {                                                                       \
 549         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 550         return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0,  \
 551                 PWR_DESC##_uname##_0 + _index * 2, buf, 2);             \
 552 }                                                                       \
 553 static DEVICE_ATTR_RO(_name##_index)
 554
 555 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0);
 556 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1);
 557 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2);
 558 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3);
 559 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4);
 560 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5);
 561 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6);
 562 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7);
 563 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8);
 564 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9);
 565 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10);
 566 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11);
 567 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12);
 568 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13);
 569 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14);
 570 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15);
 571 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0);
 572 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1);
 573 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2);
 574 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3);
 575 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4);
 576 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5);
 577 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6);
 578 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7);
 579 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8);
 580 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9);
 581 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10);
 582 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11);
 583 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12);
 584 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13);
 585 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14);
 586 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15);
 587 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0);
 588 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1);
 589 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2);
 590 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3);
 591 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4);
 592 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5);
 593 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6);
 594 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7);
 595 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8);
 596 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9);
 597 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10);
 598 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11);
 599 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12);
 600 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13);
 601 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14);
 602 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15);
 603
 604 static struct attribute *ufs_sysfs_power_descriptor[] = {
 605         &dev_attr_active_icc_levels_vcc0.attr,
 606         &dev_attr_active_icc_levels_vcc1.attr,
 607         &dev_attr_active_icc_levels_vcc2.attr,
 608         &dev_attr_active_icc_levels_vcc3.attr,
 609         &dev_attr_active_icc_levels_vcc4.attr,
 610         &dev_attr_active_icc_levels_vcc5.attr,
 611         &dev_attr_active_icc_levels_vcc6.attr,
 612         &dev_attr_active_icc_levels_vcc7.attr,
 613         &dev_attr_active_icc_levels_vcc8.attr,
 614         &dev_attr_active_icc_levels_vcc9.attr,
 615         &dev_attr_active_icc_levels_vcc10.attr,
 616         &dev_attr_active_icc_levels_vcc11.attr,
 617         &dev_attr_active_icc_levels_vcc12.attr,
 618         &dev_attr_active_icc_levels_vcc13.attr,
 619         &dev_attr_active_icc_levels_vcc14.attr,
 620         &dev_attr_active_icc_levels_vcc15.attr,
 621         &dev_attr_active_icc_levels_vccq0.attr,
 622         &dev_attr_active_icc_levels_vccq1.attr,
 623         &dev_attr_active_icc_levels_vccq2.attr,
 624         &dev_attr_active_icc_levels_vccq3.attr,
 625         &dev_attr_active_icc_levels_vccq4.attr,
 626         &dev_attr_active_icc_levels_vccq5.attr,
 627         &dev_attr_active_icc_levels_vccq6.attr,
 628         &dev_attr_active_icc_levels_vccq7.attr,
 629         &dev_attr_active_icc_levels_vccq8.attr,
 630         &dev_attr_active_icc_levels_vccq9.attr,
 631         &dev_attr_active_icc_levels_vccq10.attr,
 632         &dev_attr_active_icc_levels_vccq11.attr,
 633         &dev_attr_active_icc_levels_vccq12.attr,
 634         &dev_attr_active_icc_levels_vccq13.attr,
 635         &dev_attr_active_icc_levels_vccq14.attr,
 636         &dev_attr_active_icc_levels_vccq15.attr,
 637         &dev_attr_active_icc_levels_vccq20.attr,
 638         &dev_attr_active_icc_levels_vccq21.attr,
 639         &dev_attr_active_icc_levels_vccq22.attr,
 640         &dev_attr_active_icc_levels_vccq23.attr,
 641         &dev_attr_active_icc_levels_vccq24.attr,
 642         &dev_attr_active_icc_levels_vccq25.attr,
 643         &dev_attr_active_icc_levels_vccq26.attr,
 644         &dev_attr_active_icc_levels_vccq27.attr,
 645         &dev_attr_active_icc_levels_vccq28.attr,
 646         &dev_attr_active_icc_levels_vccq29.attr,
 647         &dev_attr_active_icc_levels_vccq210.attr,
 648         &dev_attr_active_icc_levels_vccq211.attr,
 649         &dev_attr_active_icc_levels_vccq212.attr,
 650         &dev_attr_active_icc_levels_vccq213.attr,
 651         &dev_attr_active_icc_levels_vccq214.attr,
 652         &dev_attr_active_icc_levels_vccq215.attr,
 653         NULL,
 654 };
 655
 656 static const struct attribute_group ufs_sysfs_power_descriptor_group = {
 657         .name = "power_descriptor",
 658         .attrs = ufs_sysfs_power_descriptor,
 659 };
 660
 661 #define UFS_STRING_DESCRIPTOR(_name, _pname)                            \
 662 static ssize_t _name##_show(struct device *dev,                         \
 663         struct device_attribute *attr, char *buf)                       \
 664 {                                                                       \
 665         u8 index;                                                       \
 666         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 667         int ret;                                                        \
 668         int desc_len = QUERY_DESC_MAX_SIZE;                             \
 669         u8 *desc_buf;                                                   \
 670                                                                         \
 671         down(&hba->host_sem);                                           \
 672         if (!ufshcd_is_user_access_allowed(hba)) {                      \
 673                 up(&hba->host_sem);                                     \
 674                 return -EBUSY;                                          \
 675         }                                                               \
 676         desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC);            \
 677         if (!desc_buf) {                                                \
 678                 up(&hba->host_sem);                                     \
 679                 return -ENOMEM;                                         \
 680         }                                                               \
 681         pm_runtime_get_sync(hba->dev);                                  \
 682         ret = ufshcd_query_descriptor_retry(hba,                        \
 683                 UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE,     \
 684                 0, 0, desc_buf, &desc_len);                             \
 685         if (ret) {                                                      \
 686                 ret = -EINVAL;                                          \
 687                 goto out;                                               \
 688         }                                                               \
 689         index = desc_buf[DEVICE_DESC_PARAM##_pname];                    \
 690         kfree(desc_buf);                                                \
 691         desc_buf = NULL;                                                \
 692         ret = ufshcd_read_string_desc(hba, index, &desc_buf,            \
 693                                       SD_ASCII_STD);                    \
 694         if (ret < 0)                                                    \
 695                 goto out;                                               \
 696         ret = sysfs_emit(buf, "%s\n", desc_buf);                        \
 697 out:                                                                    \
 698         pm_runtime_put_sync(hba->dev);                                  \
 699         kfree(desc_buf);                                                \
 700         up(&hba->host_sem);                                             \
 701         return ret;                                                     \
 702 }                                                                       \
 703 static DEVICE_ATTR_RO(_name)
 704
 705 UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME);
 706 UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME);
 707 UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID);
 708 UFS_STRING_DESCRIPTOR(serial_number, _SN);
 709 UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV);
 710
 711 static struct attribute *ufs_sysfs_string_descriptors[] = {
 712         &dev_attr_manufacturer_name.attr,
 713         &dev_attr_product_name.attr,
 714         &dev_attr_oem_id.attr,
 715         &dev_attr_serial_number.attr,
 716         &dev_attr_product_revision.attr,
 717         NULL,
 718 };
 719
 720 static const struct attribute_group ufs_sysfs_string_descriptors_group = {
 721         .name = "string_descriptors",
 722         .attrs = ufs_sysfs_string_descriptors,
 723 };
 724
 725 static inline bool ufshcd_is_wb_flags(enum flag_idn idn)
 726 {
 727         return ((idn >= QUERY_FLAG_IDN_WB_EN) &&
 728                 (idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8));
 729 }
 730
 731 #define UFS_FLAG(_name, _uname)                                         \
 732 static ssize_t _name##_show(struct device *dev,                         \
 733         struct device_attribute *attr, char *buf)                       \
 734 {                                                                       \
 735         bool flag;                                                      \
 736         u8 index = 0;                                                   \
 737         int ret;                                                        \
 738         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 739                                                                         \
 740         down(&hba->host_sem);                                           \
 741         if (!ufshcd_is_user_access_allowed(hba)) {                      \
 742                 up(&hba->host_sem);                                     \
 743                 return -EBUSY;                                          \
 744         }                                                               \
 745         if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname))                 \
 746                 index = ufshcd_wb_get_query_index(hba);                 \
 747         pm_runtime_get_sync(hba->dev);                                  \
 748         ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG,       \
 749                 QUERY_FLAG_IDN##_uname, index, &flag);                  \
 750         pm_runtime_put_sync(hba->dev);                                  \
 751         if (ret) {                                                      \
 752                 ret = -EINVAL;                                          \
 753                 goto out;                                               \
 754         }                                                               \
 755         ret = sysfs_emit(buf, "%s\n", flag ? "true" : "false");         \
 756 out:                                                                    \
 757         up(&hba->host_sem);                                             \
 758         return ret;                                                     \
 759 }                                                                       \
 760 static DEVICE_ATTR_RO(_name)
 761
 762 UFS_FLAG(device_init, _FDEVICEINIT);
 763 UFS_FLAG(permanent_wpe, _PERMANENT_WPE);
 764 UFS_FLAG(power_on_wpe, _PWR_ON_WPE);
 765 UFS_FLAG(bkops_enable, _BKOPS_EN);
 766 UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE);
 767 UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL);
 768 UFS_FLAG(busy_rtc, _BUSY_RTC);
 769 UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE);
 770 UFS_FLAG(wb_enable, _WB_EN);
 771 UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN);
 772 UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8);
 773
 774 static struct attribute *ufs_sysfs_device_flags[] = {
 775         &dev_attr_device_init.attr,
 776         &dev_attr_permanent_wpe.attr,
 777         &dev_attr_power_on_wpe.attr,
 778         &dev_attr_bkops_enable.attr,
 779         &dev_attr_life_span_mode_enable.attr,
 780         &dev_attr_phy_resource_removal.attr,
 781         &dev_attr_busy_rtc.attr,
 782         &dev_attr_disable_fw_update.attr,
 783         &dev_attr_wb_enable.attr,
 784         &dev_attr_wb_flush_en.attr,
 785         &dev_attr_wb_flush_during_h8.attr,
 786         NULL,
 787 };
 788
 789 static const struct attribute_group ufs_sysfs_flags_group = {
 790         .name = "flags",
 791         .attrs = ufs_sysfs_device_flags,
 792 };
 793
 794 static inline bool ufshcd_is_wb_attrs(enum attr_idn idn)
 795 {
 796         return ((idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS) &&
 797                 (idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE));
 798 }
 799
 800 #define UFS_ATTRIBUTE(_name, _uname)                                    \
 801 static ssize_t _name##_show(struct device *dev,                         \
 802         struct device_attribute *attr, char *buf)                       \
 803 {                                                                       \
 804         struct ufs_hba *hba = dev_get_drvdata(dev);                     \
 805         u32 value;                                                      \
 806         int ret;                                                        \
 807         u8 index = 0;                                                   \
 808                                                                         \
 809         down(&hba->host_sem);                                           \
 810         if (!ufshcd_is_user_access_allowed(hba)) {                      \
 811                 up(&hba->host_sem);                                     \
 812                 return -EBUSY;                                          \
 813         }                                                               \
 814         if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname))                 \
 815                 index = ufshcd_wb_get_query_index(hba);                 \
 816         pm_runtime_get_sync(hba->dev);                                  \
 817         ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,       \
 818                 QUERY_ATTR_IDN##_uname, index, 0, &value);              \
 819         pm_runtime_put_sync(hba->dev);                                  \
 820         if (ret) {                                                      \
 821                 ret = -EINVAL;                                          \
 822                 goto out;                                               \
 823         }                                                               \
 824         ret = sysfs_emit(buf, "0x%08X\n", value);                       \
 825 out:                                                                    \
 826         up(&hba->host_sem);                                             \
 827         return ret;                                                     \
 828 }                                                                       \
 829 static DEVICE_ATTR_RO(_name)
 830
 831 UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN);
 832 UFS_ATTRIBUTE(current_power_mode, _POWER_MODE);
 833 UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL);
 834 UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN);
 835 UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS);
 836 UFS_ATTRIBUTE(purge_status, _PURGE_STATUS);
 837 UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN);
 838 UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT);
 839 UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ);
 840 UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK);
 841 UFS_ATTRIBUTE(max_number_of_rtt, _MAX_NUM_OF_RTT);
 842 UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL);
 843 UFS_ATTRIBUTE(exception_event_status, _EE_STATUS);
 844 UFS_ATTRIBUTE(ffu_status, _FFU_STATUS);
 845 UFS_ATTRIBUTE(psa_state, _PSA_STATE);
 846 UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE);
 847 UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS);
 848 UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE);
 849 UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST);
 850 UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE);
 851
 852
 853 static struct attribute *ufs_sysfs_attributes[] = {
 854         &dev_attr_boot_lun_enabled.attr,
 855         &dev_attr_current_power_mode.attr,
 856         &dev_attr_active_icc_level.attr,
 857         &dev_attr_ooo_data_enabled.attr,
 858         &dev_attr_bkops_status.attr,
 859         &dev_attr_purge_status.attr,
 860         &dev_attr_max_data_in_size.attr,
 861         &dev_attr_max_data_out_size.attr,
 862         &dev_attr_reference_clock_frequency.attr,
 863         &dev_attr_configuration_descriptor_lock.attr,
 864         &dev_attr_max_number_of_rtt.attr,
 865         &dev_attr_exception_event_control.attr,
 866         &dev_attr_exception_event_status.attr,
 867         &dev_attr_ffu_status.attr,
 868         &dev_attr_psa_state.attr,
 869         &dev_attr_psa_data_size.attr,
 870         &dev_attr_wb_flush_status.attr,
 871         &dev_attr_wb_avail_buf.attr,
 872         &dev_attr_wb_life_time_est.attr,
 873         &dev_attr_wb_cur_buf.attr,
 874         NULL,
 875 };
 876
 877 static const struct attribute_group ufs_sysfs_attributes_group = {
 878         .name = "attributes",
 879         .attrs = ufs_sysfs_attributes,
 880 };
 881
 882 static const struct attribute_group *ufs_sysfs_groups[] = {
 883         &ufs_sysfs_default_group,
 884         &ufs_sysfs_device_descriptor_group,
 885         &ufs_sysfs_interconnect_descriptor_group,
 886         &ufs_sysfs_geometry_descriptor_group,
 887         &ufs_sysfs_health_descriptor_group,
 888         &ufs_sysfs_power_descriptor_group,
 889         &ufs_sysfs_string_descriptors_group,
 890         &ufs_sysfs_flags_group,
 891         &ufs_sysfs_attributes_group,
 892         NULL,
 893 };
 894
 895 #define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size)             \
 896 static ssize_t _pname##_show(struct device *dev,                        \
 897         struct device_attribute *attr, char *buf)                       \
 898 {                                                                       \
 899         struct scsi_device *sdev = to_scsi_device(dev);                 \
 900         struct ufs_hba *hba = shost_priv(sdev->host);                   \
 901         u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);                    \
 902         if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun,            \
 903                                 _duname##_DESC_PARAM##_puname))         \
 904                 return -EINVAL;                                         \
 905         return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
 906                 lun, _duname##_DESC_PARAM##_puname, buf, _size);        \
 907 }                                                                       \
 908 static DEVICE_ATTR_RO(_pname)
 909
 910 #define UFS_UNIT_DESC_PARAM(_name, _uname, _size)                       \
 911         UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size)
 912
 913 UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1);
 914 UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1);
 915 UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1);
 916 UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1);
 917 UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1);
 918 UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1);
 919 UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1);
 920 UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8);
 921 UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4);
 922 UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1);
 923 UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8);
 924 UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2);
 925 UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1);
 926 UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4);
 927
 928
 929 static struct attribute *ufs_sysfs_unit_descriptor[] = {
 930         &dev_attr_boot_lun_id.attr,
 931         &dev_attr_lun_write_protect.attr,
 932         &dev_attr_lun_queue_depth.attr,
 933         &dev_attr_psa_sensitive.attr,
 934         &dev_attr_lun_memory_type.attr,
 935         &dev_attr_data_reliability.attr,
 936         &dev_attr_logical_block_size.attr,
 937         &dev_attr_logical_block_count.attr,
 938         &dev_attr_erase_block_size.attr,
 939         &dev_attr_provisioning_type.attr,
 940         &dev_attr_physical_memory_resourse_count.attr,
 941         &dev_attr_context_capabilities.attr,
 942         &dev_attr_large_unit_granularity.attr,
 943         &dev_attr_wb_buf_alloc_units.attr,
 944         NULL,
 945 };
 946
 947 const struct attribute_group ufs_sysfs_unit_descriptor_group = {
 948         .name = "unit_descriptor",
 949         .attrs = ufs_sysfs_unit_descriptor,
 950 };
 951
 952 static ssize_t dyn_cap_needed_attribute_show(struct device *dev,
 953         struct device_attribute *attr, char *buf)
 954 {
 955         u32 value;
 956         struct scsi_device *sdev = to_scsi_device(dev);
 957         struct ufs_hba *hba = shost_priv(sdev->host);
 958         u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
 959         int ret;
 960
 961         down(&hba->host_sem);
 962         if (!ufshcd_is_user_access_allowed(hba)) {
 963                 ret = -EBUSY;
 964                 goto out;
 965         }
 966
 967         pm_runtime_get_sync(hba->dev);
 968         ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,
 969                 QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value);
 970         pm_runtime_put_sync(hba->dev);
 971         if (ret) {
 972                 ret = -EINVAL;
 973                 goto out;
 974         }
 975
 976         ret = sysfs_emit(buf, "0x%08X\n", value);
 977
 978 out:
 979         up(&hba->host_sem);
 980         return ret;
 981 }
 982 static DEVICE_ATTR_RO(dyn_cap_needed_attribute);
 983
 984 static struct attribute *ufs_sysfs_lun_attributes[] = {
 985         &dev_attr_dyn_cap_needed_attribute.attr,
 986         NULL,
 987 };
 988
 989 const struct attribute_group ufs_sysfs_lun_attributes_group = {
 990         .attrs = ufs_sysfs_lun_attributes,
 991 };
 992
 993 void ufs_sysfs_add_nodes(struct device *dev)
 994 {
 995         int ret;
 996
 997         ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups);
 998         if (ret)
 999                 dev_err(dev,
1000                         "%s: sysfs groups creation failed (err = %d)\n",
1001                         __func__, ret);
1002 }
1003
1004 void ufs_sysfs_remove_nodes(struct device *dev)
1005 {
1006         sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups);
1007 }