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
ufshcd_uic_link_state_to_string(enum uic_link_state state)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
ufshcd_ufs_dev_pwr_mode_to_string(enum ufs_dev_pwr_mode state)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
ufs_sysfs_pm_lvl_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count,bool rpm)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
rpm_lvl_show(struct device * dev,struct device_attribute * attr,char * buf)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
rpm_lvl_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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
rpm_target_dev_state_show(struct device * dev,struct device_attribute * attr,char * buf)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
rpm_target_link_state_show(struct device * dev,struct device_attribute * attr,char * buf)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
spm_lvl_show(struct device * dev,struct device_attribute * attr,char * buf)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
spm_lvl_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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
spm_target_dev_state_show(struct device * dev,struct device_attribute * attr,char * buf)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
spm_target_link_state_show(struct device * dev,struct device_attribute * attr,char * buf)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 */
ufshcd_ahit_to_us(u32 ahit)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 */
ufshcd_us_to_ahit(unsigned int timer)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
auto_hibern8_show(struct device * dev,struct device_attribute * attr,char * buf)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
auto_hibern8_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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
wb_on_show(struct device * dev,struct device_attribute * attr,char * buf)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
wb_on_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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_toggle(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
ufs_sysfs_read_desc_param(struct ufs_hba * hba,enum desc_idn desc_id,u8 desc_index,u8 param_offset,u8 * sysfs_buf,u8 param_size)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
ufshcd_is_wb_flags(enum flag_idn idn)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
ufshcd_is_wb_attrs(enum attr_idn idn)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
dyn_cap_needed_attribute_show(struct device * dev,struct device_attribute * attr,char * buf)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
ufs_sysfs_add_nodes(struct device * dev)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
ufs_sysfs_remove_nodes(struct device * dev)1004 void ufs_sysfs_remove_nodes(struct device *dev)
1005 {
1006 sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups);
1007 }
1008