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1// SPDX-License-Identifier: GPL-2.0
2// Copyright (C) 2018 Western Digital Corporation
3
4#include <linux/err.h>
5#include <linux/string.h>
6#include <linux/bitfield.h>
7#include <asm/unaligned.h>
8
9#include <ufs/ufs.h>
10#include <ufs/unipro.h>
11#include "ufs-sysfs.h"
12#include "ufshcd-priv.h"
13
14static const char *ufs_pa_pwr_mode_to_string(enum ufs_pa_pwr_mode mode)
15{
16 switch (mode) {
17 case FAST_MODE: return "FAST_MODE";
18 case SLOW_MODE: return "SLOW_MODE";
19 case FASTAUTO_MODE: return "FASTAUTO_MODE";
20 case SLOWAUTO_MODE: return "SLOWAUTO_MODE";
21 default: return "UNKNOWN";
22 }
23}
24
25static const char *ufs_hs_gear_rate_to_string(enum ufs_hs_gear_rate rate)
26{
27 switch (rate) {
28 case PA_HS_MODE_A: return "HS_RATE_A";
29 case PA_HS_MODE_B: return "HS_RATE_B";
30 default: return "UNKNOWN";
31 }
32}
33
34static const char *ufs_pwm_gear_to_string(enum ufs_pwm_gear_tag gear)
35{
36 switch (gear) {
37 case UFS_PWM_G1: return "PWM_GEAR1";
38 case UFS_PWM_G2: return "PWM_GEAR2";
39 case UFS_PWM_G3: return "PWM_GEAR3";
40 case UFS_PWM_G4: return "PWM_GEAR4";
41 case UFS_PWM_G5: return "PWM_GEAR5";
42 case UFS_PWM_G6: return "PWM_GEAR6";
43 case UFS_PWM_G7: return "PWM_GEAR7";
44 default: return "UNKNOWN";
45 }
46}
47
48static const char *ufs_hs_gear_to_string(enum ufs_hs_gear_tag gear)
49{
50 switch (gear) {
51 case UFS_HS_G1: return "HS_GEAR1";
52 case UFS_HS_G2: return "HS_GEAR2";
53 case UFS_HS_G3: return "HS_GEAR3";
54 case UFS_HS_G4: return "HS_GEAR4";
55 case UFS_HS_G5: return "HS_GEAR5";
56 default: return "UNKNOWN";
57 }
58}
59
60static const char *ufshcd_uic_link_state_to_string(
61 enum uic_link_state state)
62{
63 switch (state) {
64 case UIC_LINK_OFF_STATE: return "OFF";
65 case UIC_LINK_ACTIVE_STATE: return "ACTIVE";
66 case UIC_LINK_HIBERN8_STATE: return "HIBERN8";
67 case UIC_LINK_BROKEN_STATE: return "BROKEN";
68 default: return "UNKNOWN";
69 }
70}
71
72static const char *ufshcd_ufs_dev_pwr_mode_to_string(
73 enum ufs_dev_pwr_mode state)
74{
75 switch (state) {
76 case UFS_ACTIVE_PWR_MODE: return "ACTIVE";
77 case UFS_SLEEP_PWR_MODE: return "SLEEP";
78 case UFS_POWERDOWN_PWR_MODE: return "POWERDOWN";
79 case UFS_DEEPSLEEP_PWR_MODE: return "DEEPSLEEP";
80 default: return "UNKNOWN";
81 }
82}
83
84static inline ssize_t ufs_sysfs_pm_lvl_store(struct device *dev,
85 struct device_attribute *attr,
86 const char *buf, size_t count,
87 bool rpm)
88{
89 struct ufs_hba *hba = dev_get_drvdata(dev);
90 struct ufs_dev_info *dev_info = &hba->dev_info;
91 unsigned long flags, value;
92
93 if (kstrtoul(buf, 0, &value))
94 return -EINVAL;
95
96 if (value >= UFS_PM_LVL_MAX)
97 return -EINVAL;
98
99 if (ufs_pm_lvl_states[value].dev_state == UFS_DEEPSLEEP_PWR_MODE &&
100 (!(hba->caps & UFSHCD_CAP_DEEPSLEEP) ||
101 !(dev_info->wspecversion >= 0x310)))
102 return -EINVAL;
103
104 spin_lock_irqsave(hba->host->host_lock, flags);
105 if (rpm)
106 hba->rpm_lvl = value;
107 else
108 hba->spm_lvl = value;
109 spin_unlock_irqrestore(hba->host->host_lock, flags);
110 return count;
111}
112
113static ssize_t rpm_lvl_show(struct device *dev,
114 struct device_attribute *attr, char *buf)
115{
116 struct ufs_hba *hba = dev_get_drvdata(dev);
117
118 return sysfs_emit(buf, "%d\n", hba->rpm_lvl);
119}
120
121static ssize_t rpm_lvl_store(struct device *dev,
122 struct device_attribute *attr, const char *buf, size_t count)
123{
124 return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, true);
125}
126
127static ssize_t rpm_target_dev_state_show(struct device *dev,
128 struct device_attribute *attr, char *buf)
129{
130 struct ufs_hba *hba = dev_get_drvdata(dev);
131
132 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(
133 ufs_pm_lvl_states[hba->rpm_lvl].dev_state));
134}
135
136static ssize_t rpm_target_link_state_show(struct device *dev,
137 struct device_attribute *attr, char *buf)
138{
139 struct ufs_hba *hba = dev_get_drvdata(dev);
140
141 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(
142 ufs_pm_lvl_states[hba->rpm_lvl].link_state));
143}
144
145static ssize_t spm_lvl_show(struct device *dev,
146 struct device_attribute *attr, char *buf)
147{
148 struct ufs_hba *hba = dev_get_drvdata(dev);
149
150 return sysfs_emit(buf, "%d\n", hba->spm_lvl);
151}
152
153static ssize_t spm_lvl_store(struct device *dev,
154 struct device_attribute *attr, const char *buf, size_t count)
155{
156 return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, false);
157}
158
159static ssize_t spm_target_dev_state_show(struct device *dev,
160 struct device_attribute *attr, char *buf)
161{
162 struct ufs_hba *hba = dev_get_drvdata(dev);
163
164 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(
165 ufs_pm_lvl_states[hba->spm_lvl].dev_state));
166}
167
168static ssize_t spm_target_link_state_show(struct device *dev,
169 struct device_attribute *attr, char *buf)
170{
171 struct ufs_hba *hba = dev_get_drvdata(dev);
172
173 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(
174 ufs_pm_lvl_states[hba->spm_lvl].link_state));
175}
176
177/* Convert Auto-Hibernate Idle Timer register value to microseconds */
178static int ufshcd_ahit_to_us(u32 ahit)
179{
180 int timer = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, ahit);
181 int scale = FIELD_GET(UFSHCI_AHIBERN8_SCALE_MASK, ahit);
182
183 for (; scale > 0; --scale)
184 timer *= UFSHCI_AHIBERN8_SCALE_FACTOR;
185
186 return timer;
187}
188
189/* Convert microseconds to Auto-Hibernate Idle Timer register value */
190static u32 ufshcd_us_to_ahit(unsigned int timer)
191{
192 unsigned int scale;
193
194 for (scale = 0; timer > UFSHCI_AHIBERN8_TIMER_MASK; ++scale)
195 timer /= UFSHCI_AHIBERN8_SCALE_FACTOR;
196
197 return FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, timer) |
198 FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, scale);
199}
200
201static ssize_t auto_hibern8_show(struct device *dev,
202 struct device_attribute *attr, char *buf)
203{
204 u32 ahit;
205 int ret;
206 struct ufs_hba *hba = dev_get_drvdata(dev);
207
208 if (!ufshcd_is_auto_hibern8_supported(hba))
209 return -EOPNOTSUPP;
210
211 down(&hba->host_sem);
212 if (!ufshcd_is_user_access_allowed(hba)) {
213 ret = -EBUSY;
214 goto out;
215 }
216
217 pm_runtime_get_sync(hba->dev);
218 ufshcd_hold(hba);
219 ahit = ufshcd_readl(hba, REG_AUTO_HIBERNATE_IDLE_TIMER);
220 ufshcd_release(hba);
221 pm_runtime_put_sync(hba->dev);
222
223 ret = sysfs_emit(buf, "%d\n", ufshcd_ahit_to_us(ahit));
224
225out:
226 up(&hba->host_sem);
227 return ret;
228}
229
230static ssize_t auto_hibern8_store(struct device *dev,
231 struct device_attribute *attr,
232 const char *buf, size_t count)
233{
234 struct ufs_hba *hba = dev_get_drvdata(dev);
235 unsigned int timer;
236 int ret = 0;
237
238 if (!ufshcd_is_auto_hibern8_supported(hba))
239 return -EOPNOTSUPP;
240
241 if (kstrtouint(buf, 0, &timer))
242 return -EINVAL;
243
244 if (timer > UFSHCI_AHIBERN8_MAX)
245 return -EINVAL;
246
247 down(&hba->host_sem);
248 if (!ufshcd_is_user_access_allowed(hba)) {
249 ret = -EBUSY;
250 goto out;
251 }
252
253 ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer));
254
255out:
256 up(&hba->host_sem);
257 return ret ? ret : count;
258}
259
260static ssize_t wb_on_show(struct device *dev, struct device_attribute *attr,
261 char *buf)
262{
263 struct ufs_hba *hba = dev_get_drvdata(dev);
264
265 return sysfs_emit(buf, "%d\n", hba->dev_info.wb_enabled);
266}
267
268static ssize_t wb_on_store(struct device *dev, struct device_attribute *attr,
269 const char *buf, size_t count)
270{
271 struct ufs_hba *hba = dev_get_drvdata(dev);
272 unsigned int wb_enable;
273 ssize_t res;
274
275 if (!ufshcd_is_wb_allowed(hba) || (ufshcd_is_clkscaling_supported(hba)
276 && ufshcd_enable_wb_if_scaling_up(hba))) {
277 /*
278 * If the platform supports UFSHCD_CAP_CLK_SCALING, turn WB
279 * on/off will be done while clock scaling up/down.
280 */
281 dev_warn(dev, "It is not allowed to configure WB!\n");
282 return -EOPNOTSUPP;
283 }
284
285 if (kstrtouint(buf, 0, &wb_enable))
286 return -EINVAL;
287
288 if (wb_enable != 0 && wb_enable != 1)
289 return -EINVAL;
290
291 down(&hba->host_sem);
292 if (!ufshcd_is_user_access_allowed(hba)) {
293 res = -EBUSY;
294 goto out;
295 }
296
297 ufshcd_rpm_get_sync(hba);
298 res = ufshcd_wb_toggle(hba, wb_enable);
299 ufshcd_rpm_put_sync(hba);
300out:
301 up(&hba->host_sem);
302 return res < 0 ? res : count;
303}
304
305static ssize_t rtc_update_ms_show(struct device *dev, struct device_attribute *attr,
306 char *buf)
307{
308 struct ufs_hba *hba = dev_get_drvdata(dev);
309
310 return sysfs_emit(buf, "%d\n", hba->dev_info.rtc_update_period);
311}
312
313static ssize_t rtc_update_ms_store(struct device *dev, struct device_attribute *attr,
314 const char *buf, size_t count)
315{
316 struct ufs_hba *hba = dev_get_drvdata(dev);
317 unsigned int ms;
318 bool resume_period_update = false;
319
320 if (kstrtouint(buf, 0, &ms))
321 return -EINVAL;
322
323 if (!hba->dev_info.rtc_update_period && ms > 0)
324 resume_period_update = true;
325 /* Minimum and maximum update frequency should be synchronized with all UFS vendors */
326 hba->dev_info.rtc_update_period = ms;
327
328 if (resume_period_update)
329 schedule_delayed_work(&hba->ufs_rtc_update_work,
330 msecs_to_jiffies(hba->dev_info.rtc_update_period));
331 return count;
332}
333
334static ssize_t enable_wb_buf_flush_show(struct device *dev,
335 struct device_attribute *attr,
336 char *buf)
337{
338 struct ufs_hba *hba = dev_get_drvdata(dev);
339
340 return sysfs_emit(buf, "%d\n", hba->dev_info.wb_buf_flush_enabled);
341}
342
343static ssize_t enable_wb_buf_flush_store(struct device *dev,
344 struct device_attribute *attr,
345 const char *buf, size_t count)
346{
347 struct ufs_hba *hba = dev_get_drvdata(dev);
348 unsigned int enable_wb_buf_flush;
349 ssize_t res;
350
351 if (!ufshcd_is_wb_buf_flush_allowed(hba)) {
352 dev_warn(dev, "It is not allowed to configure WB buf flushing!\n");
353 return -EOPNOTSUPP;
354 }
355
356 if (kstrtouint(buf, 0, &enable_wb_buf_flush))
357 return -EINVAL;
358
359 if (enable_wb_buf_flush != 0 && enable_wb_buf_flush != 1)
360 return -EINVAL;
361
362 down(&hba->host_sem);
363 if (!ufshcd_is_user_access_allowed(hba)) {
364 res = -EBUSY;
365 goto out;
366 }
367
368 ufshcd_rpm_get_sync(hba);
369 res = ufshcd_wb_toggle_buf_flush(hba, enable_wb_buf_flush);
370 ufshcd_rpm_put_sync(hba);
371
372out:
373 up(&hba->host_sem);
374 return res < 0 ? res : count;
375}
376
377static ssize_t wb_flush_threshold_show(struct device *dev,
378 struct device_attribute *attr,
379 char *buf)
380{
381 struct ufs_hba *hba = dev_get_drvdata(dev);
382
383 return sysfs_emit(buf, "%u\n", hba->vps->wb_flush_threshold);
384}
385
386static ssize_t wb_flush_threshold_store(struct device *dev,
387 struct device_attribute *attr,
388 const char *buf, size_t count)
389{
390 struct ufs_hba *hba = dev_get_drvdata(dev);
391 unsigned int wb_flush_threshold;
392
393 if (kstrtouint(buf, 0, &wb_flush_threshold))
394 return -EINVAL;
395
396 /* The range of values for wb_flush_threshold is (0,10] */
397 if (wb_flush_threshold > UFS_WB_BUF_REMAIN_PERCENT(100) ||
398 wb_flush_threshold == 0) {
399 dev_err(dev, "The value of wb_flush_threshold is invalid!\n");
400 return -EINVAL;
401 }
402
403 hba->vps->wb_flush_threshold = wb_flush_threshold;
404
405 return count;
406}
407
408/**
409 * pm_qos_enable_show - sysfs handler to show pm qos enable value
410 * @dev: device associated with the UFS controller
411 * @attr: sysfs attribute handle
412 * @buf: buffer for sysfs file
413 *
414 * Print 1 if PM QoS feature is enabled, 0 if disabled.
415 *
416 * Returns number of characters written to @buf.
417 */
418static ssize_t pm_qos_enable_show(struct device *dev,
419 struct device_attribute *attr, char *buf)
420{
421 struct ufs_hba *hba = dev_get_drvdata(dev);
422
423 return sysfs_emit(buf, "%d\n", hba->pm_qos_enabled);
424}
425
426/**
427 * pm_qos_enable_store - sysfs handler to store value
428 * @dev: device associated with the UFS controller
429 * @attr: sysfs attribute handle
430 * @buf: buffer for sysfs file
431 * @count: stores buffer characters count
432 *
433 * Input 0 to disable PM QoS and 1 value to enable.
434 * Default state: 1
435 *
436 * Return: number of characters written to @buf on success, < 0 upon failure.
437 */
438static ssize_t pm_qos_enable_store(struct device *dev,
439 struct device_attribute *attr, const char *buf, size_t count)
440{
441 struct ufs_hba *hba = dev_get_drvdata(dev);
442 bool value;
443
444 if (kstrtobool(buf, &value))
445 return -EINVAL;
446
447 if (value)
448 ufshcd_pm_qos_init(hba);
449 else
450 ufshcd_pm_qos_exit(hba);
451
452 return count;
453}
454
455static DEVICE_ATTR_RW(rpm_lvl);
456static DEVICE_ATTR_RO(rpm_target_dev_state);
457static DEVICE_ATTR_RO(rpm_target_link_state);
458static DEVICE_ATTR_RW(spm_lvl);
459static DEVICE_ATTR_RO(spm_target_dev_state);
460static DEVICE_ATTR_RO(spm_target_link_state);
461static DEVICE_ATTR_RW(auto_hibern8);
462static DEVICE_ATTR_RW(wb_on);
463static DEVICE_ATTR_RW(enable_wb_buf_flush);
464static DEVICE_ATTR_RW(wb_flush_threshold);
465static DEVICE_ATTR_RW(rtc_update_ms);
466static DEVICE_ATTR_RW(pm_qos_enable);
467
468static struct attribute *ufs_sysfs_ufshcd_attrs[] = {
469 &dev_attr_rpm_lvl.attr,
470 &dev_attr_rpm_target_dev_state.attr,
471 &dev_attr_rpm_target_link_state.attr,
472 &dev_attr_spm_lvl.attr,
473 &dev_attr_spm_target_dev_state.attr,
474 &dev_attr_spm_target_link_state.attr,
475 &dev_attr_auto_hibern8.attr,
476 &dev_attr_wb_on.attr,
477 &dev_attr_enable_wb_buf_flush.attr,
478 &dev_attr_wb_flush_threshold.attr,
479 &dev_attr_rtc_update_ms.attr,
480 &dev_attr_pm_qos_enable.attr,
481 NULL
482};
483
484static const struct attribute_group ufs_sysfs_default_group = {
485 .attrs = ufs_sysfs_ufshcd_attrs,
486};
487
488static ssize_t clock_scaling_show(struct device *dev, struct device_attribute *attr,
489 char *buf)
490{
491 struct ufs_hba *hba = dev_get_drvdata(dev);
492
493 return sysfs_emit(buf, "%d\n", ufshcd_is_clkscaling_supported(hba));
494}
495
496static ssize_t write_booster_show(struct device *dev, struct device_attribute *attr,
497 char *buf)
498{
499 struct ufs_hba *hba = dev_get_drvdata(dev);
500
501 return sysfs_emit(buf, "%d\n", ufshcd_is_wb_allowed(hba));
502}
503
504static DEVICE_ATTR_RO(clock_scaling);
505static DEVICE_ATTR_RO(write_booster);
506
507/*
508 * See Documentation/ABI/testing/sysfs-driver-ufs for the semantics of this
509 * group.
510 */
511static struct attribute *ufs_sysfs_capabilities_attrs[] = {
512 &dev_attr_clock_scaling.attr,
513 &dev_attr_write_booster.attr,
514 NULL
515};
516
517static const struct attribute_group ufs_sysfs_capabilities_group = {
518 .name = "capabilities",
519 .attrs = ufs_sysfs_capabilities_attrs,
520};
521
522static ssize_t monitor_enable_show(struct device *dev,
523 struct device_attribute *attr, char *buf)
524{
525 struct ufs_hba *hba = dev_get_drvdata(dev);
526
527 return sysfs_emit(buf, "%d\n", hba->monitor.enabled);
528}
529
530static ssize_t monitor_enable_store(struct device *dev,
531 struct device_attribute *attr,
532 const char *buf, size_t count)
533{
534 struct ufs_hba *hba = dev_get_drvdata(dev);
535 unsigned long value, flags;
536
537 if (kstrtoul(buf, 0, &value))
538 return -EINVAL;
539
540 value = !!value;
541 spin_lock_irqsave(hba->host->host_lock, flags);
542 if (value == hba->monitor.enabled)
543 goto out_unlock;
544
545 if (!value) {
546 memset(&hba->monitor, 0, sizeof(hba->monitor));
547 } else {
548 hba->monitor.enabled = true;
549 hba->monitor.enabled_ts = ktime_get();
550 }
551
552out_unlock:
553 spin_unlock_irqrestore(hba->host->host_lock, flags);
554 return count;
555}
556
557static ssize_t monitor_chunk_size_show(struct device *dev,
558 struct device_attribute *attr, char *buf)
559{
560 struct ufs_hba *hba = dev_get_drvdata(dev);
561
562 return sysfs_emit(buf, "%lu\n", hba->monitor.chunk_size);
563}
564
565static ssize_t monitor_chunk_size_store(struct device *dev,
566 struct device_attribute *attr,
567 const char *buf, size_t count)
568{
569 struct ufs_hba *hba = dev_get_drvdata(dev);
570 unsigned long value, flags;
571
572 if (kstrtoul(buf, 0, &value))
573 return -EINVAL;
574
575 spin_lock_irqsave(hba->host->host_lock, flags);
576 /* Only allow chunk size change when monitor is disabled */
577 if (!hba->monitor.enabled)
578 hba->monitor.chunk_size = value;
579 spin_unlock_irqrestore(hba->host->host_lock, flags);
580 return count;
581}
582
583static ssize_t read_total_sectors_show(struct device *dev,
584 struct device_attribute *attr, char *buf)
585{
586 struct ufs_hba *hba = dev_get_drvdata(dev);
587
588 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[READ]);
589}
590
591static ssize_t read_total_busy_show(struct device *dev,
592 struct device_attribute *attr, char *buf)
593{
594 struct ufs_hba *hba = dev_get_drvdata(dev);
595
596 return sysfs_emit(buf, "%llu\n",
597 ktime_to_us(hba->monitor.total_busy[READ]));
598}
599
600static ssize_t read_nr_requests_show(struct device *dev,
601 struct device_attribute *attr, char *buf)
602{
603 struct ufs_hba *hba = dev_get_drvdata(dev);
604
605 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[READ]);
606}
607
608static ssize_t read_req_latency_avg_show(struct device *dev,
609 struct device_attribute *attr,
610 char *buf)
611{
612 struct ufs_hba *hba = dev_get_drvdata(dev);
613 struct ufs_hba_monitor *m = &hba->monitor;
614
615 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[READ]),
616 m->nr_req[READ]));
617}
618
619static ssize_t read_req_latency_max_show(struct device *dev,
620 struct device_attribute *attr,
621 char *buf)
622{
623 struct ufs_hba *hba = dev_get_drvdata(dev);
624
625 return sysfs_emit(buf, "%llu\n",
626 ktime_to_us(hba->monitor.lat_max[READ]));
627}
628
629static ssize_t read_req_latency_min_show(struct device *dev,
630 struct device_attribute *attr,
631 char *buf)
632{
633 struct ufs_hba *hba = dev_get_drvdata(dev);
634
635 return sysfs_emit(buf, "%llu\n",
636 ktime_to_us(hba->monitor.lat_min[READ]));
637}
638
639static ssize_t read_req_latency_sum_show(struct device *dev,
640 struct device_attribute *attr,
641 char *buf)
642{
643 struct ufs_hba *hba = dev_get_drvdata(dev);
644
645 return sysfs_emit(buf, "%llu\n",
646 ktime_to_us(hba->monitor.lat_sum[READ]));
647}
648
649static ssize_t write_total_sectors_show(struct device *dev,
650 struct device_attribute *attr,
651 char *buf)
652{
653 struct ufs_hba *hba = dev_get_drvdata(dev);
654
655 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[WRITE]);
656}
657
658static ssize_t write_total_busy_show(struct device *dev,
659 struct device_attribute *attr, char *buf)
660{
661 struct ufs_hba *hba = dev_get_drvdata(dev);
662
663 return sysfs_emit(buf, "%llu\n",
664 ktime_to_us(hba->monitor.total_busy[WRITE]));
665}
666
667static ssize_t write_nr_requests_show(struct device *dev,
668 struct device_attribute *attr, char *buf)
669{
670 struct ufs_hba *hba = dev_get_drvdata(dev);
671
672 return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[WRITE]);
673}
674
675static ssize_t write_req_latency_avg_show(struct device *dev,
676 struct device_attribute *attr,
677 char *buf)
678{
679 struct ufs_hba *hba = dev_get_drvdata(dev);
680 struct ufs_hba_monitor *m = &hba->monitor;
681
682 return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[WRITE]),
683 m->nr_req[WRITE]));
684}
685
686static ssize_t write_req_latency_max_show(struct device *dev,
687 struct device_attribute *attr,
688 char *buf)
689{
690 struct ufs_hba *hba = dev_get_drvdata(dev);
691
692 return sysfs_emit(buf, "%llu\n",
693 ktime_to_us(hba->monitor.lat_max[WRITE]));
694}
695
696static ssize_t write_req_latency_min_show(struct device *dev,
697 struct device_attribute *attr,
698 char *buf)
699{
700 struct ufs_hba *hba = dev_get_drvdata(dev);
701
702 return sysfs_emit(buf, "%llu\n",
703 ktime_to_us(hba->monitor.lat_min[WRITE]));
704}
705
706static ssize_t write_req_latency_sum_show(struct device *dev,
707 struct device_attribute *attr,
708 char *buf)
709{
710 struct ufs_hba *hba = dev_get_drvdata(dev);
711
712 return sysfs_emit(buf, "%llu\n",
713 ktime_to_us(hba->monitor.lat_sum[WRITE]));
714}
715
716static DEVICE_ATTR_RW(monitor_enable);
717static DEVICE_ATTR_RW(monitor_chunk_size);
718static DEVICE_ATTR_RO(read_total_sectors);
719static DEVICE_ATTR_RO(read_total_busy);
720static DEVICE_ATTR_RO(read_nr_requests);
721static DEVICE_ATTR_RO(read_req_latency_avg);
722static DEVICE_ATTR_RO(read_req_latency_max);
723static DEVICE_ATTR_RO(read_req_latency_min);
724static DEVICE_ATTR_RO(read_req_latency_sum);
725static DEVICE_ATTR_RO(write_total_sectors);
726static DEVICE_ATTR_RO(write_total_busy);
727static DEVICE_ATTR_RO(write_nr_requests);
728static DEVICE_ATTR_RO(write_req_latency_avg);
729static DEVICE_ATTR_RO(write_req_latency_max);
730static DEVICE_ATTR_RO(write_req_latency_min);
731static DEVICE_ATTR_RO(write_req_latency_sum);
732
733static struct attribute *ufs_sysfs_monitor_attrs[] = {
734 &dev_attr_monitor_enable.attr,
735 &dev_attr_monitor_chunk_size.attr,
736 &dev_attr_read_total_sectors.attr,
737 &dev_attr_read_total_busy.attr,
738 &dev_attr_read_nr_requests.attr,
739 &dev_attr_read_req_latency_avg.attr,
740 &dev_attr_read_req_latency_max.attr,
741 &dev_attr_read_req_latency_min.attr,
742 &dev_attr_read_req_latency_sum.attr,
743 &dev_attr_write_total_sectors.attr,
744 &dev_attr_write_total_busy.attr,
745 &dev_attr_write_nr_requests.attr,
746 &dev_attr_write_req_latency_avg.attr,
747 &dev_attr_write_req_latency_max.attr,
748 &dev_attr_write_req_latency_min.attr,
749 &dev_attr_write_req_latency_sum.attr,
750 NULL
751};
752
753static const struct attribute_group ufs_sysfs_monitor_group = {
754 .name = "monitor",
755 .attrs = ufs_sysfs_monitor_attrs,
756};
757
758static ssize_t lane_show(struct device *dev, struct device_attribute *attr,
759 char *buf)
760{
761 struct ufs_hba *hba = dev_get_drvdata(dev);
762
763 return sysfs_emit(buf, "%u\n", hba->pwr_info.lane_rx);
764}
765
766static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
767 char *buf)
768{
769 struct ufs_hba *hba = dev_get_drvdata(dev);
770
771 return sysfs_emit(buf, "%s\n", ufs_pa_pwr_mode_to_string(hba->pwr_info.pwr_rx));
772}
773
774static ssize_t rate_show(struct device *dev, struct device_attribute *attr,
775 char *buf)
776{
777 struct ufs_hba *hba = dev_get_drvdata(dev);
778
779 return sysfs_emit(buf, "%s\n", ufs_hs_gear_rate_to_string(hba->pwr_info.hs_rate));
780}
781
782static ssize_t gear_show(struct device *dev, struct device_attribute *attr,
783 char *buf)
784{
785 struct ufs_hba *hba = dev_get_drvdata(dev);
786
787 return sysfs_emit(buf, "%s\n", hba->pwr_info.hs_rate ?
788 ufs_hs_gear_to_string(hba->pwr_info.gear_rx) :
789 ufs_pwm_gear_to_string(hba->pwr_info.gear_rx));
790}
791
792static ssize_t dev_pm_show(struct device *dev, struct device_attribute *attr,
793 char *buf)
794{
795 struct ufs_hba *hba = dev_get_drvdata(dev);
796
797 return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(hba->curr_dev_pwr_mode));
798}
799
800static ssize_t link_state_show(struct device *dev,
801 struct device_attribute *attr, char *buf)
802{
803 struct ufs_hba *hba = dev_get_drvdata(dev);
804
805 return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(hba->uic_link_state));
806}
807
808static DEVICE_ATTR_RO(lane);
809static DEVICE_ATTR_RO(mode);
810static DEVICE_ATTR_RO(rate);
811static DEVICE_ATTR_RO(gear);
812static DEVICE_ATTR_RO(dev_pm);
813static DEVICE_ATTR_RO(link_state);
814
815static struct attribute *ufs_power_info_attrs[] = {
816 &dev_attr_lane.attr,
817 &dev_attr_mode.attr,
818 &dev_attr_rate.attr,
819 &dev_attr_gear.attr,
820 &dev_attr_dev_pm.attr,
821 &dev_attr_link_state.attr,
822 NULL
823};
824
825static const struct attribute_group ufs_sysfs_power_info_group = {
826 .name = "power_info",
827 .attrs = ufs_power_info_attrs,
828};
829
830static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba,
831 enum desc_idn desc_id,
832 u8 desc_index,
833 u8 param_offset,
834 u8 *sysfs_buf,
835 u8 param_size)
836{
837 u8 desc_buf[8] = {0};
838 int ret;
839
840 if (param_size > 8)
841 return -EINVAL;
842
843 down(&hba->host_sem);
844 if (!ufshcd_is_user_access_allowed(hba)) {
845 ret = -EBUSY;
846 goto out;
847 }
848
849 ufshcd_rpm_get_sync(hba);
850 ret = ufshcd_read_desc_param(hba, desc_id, desc_index,
851 param_offset, desc_buf, param_size);
852 ufshcd_rpm_put_sync(hba);
853 if (ret) {
854 ret = -EINVAL;
855 goto out;
856 }
857
858 switch (param_size) {
859 case 1:
860 ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf);
861 break;
862 case 2:
863 ret = sysfs_emit(sysfs_buf, "0x%04X\n",
864 get_unaligned_be16(desc_buf));
865 break;
866 case 4:
867 ret = sysfs_emit(sysfs_buf, "0x%08X\n",
868 get_unaligned_be32(desc_buf));
869 break;
870 case 8:
871 ret = sysfs_emit(sysfs_buf, "0x%016llX\n",
872 get_unaligned_be64(desc_buf));
873 break;
874 }
875
876out:
877 up(&hba->host_sem);
878 return ret;
879}
880
881#define UFS_DESC_PARAM(_name, _puname, _duname, _size) \
882static ssize_t _name##_show(struct device *dev, \
883 struct device_attribute *attr, char *buf) \
884{ \
885 struct ufs_hba *hba = dev_get_drvdata(dev); \
886 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
887 0, _duname##_DESC_PARAM##_puname, buf, _size); \
888} \
889static DEVICE_ATTR_RO(_name)
890
891#define UFS_DEVICE_DESC_PARAM(_name, _uname, _size) \
892 UFS_DESC_PARAM(_name, _uname, DEVICE, _size)
893
894UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1);
895UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1);
896UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1);
897UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1);
898UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1);
899UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1);
900UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1);
901UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1);
902UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1);
903UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1);
904UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1);
905UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1);
906UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1);
907UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1);
908UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2);
909UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2);
910UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2);
911UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1);
912UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2);
913UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1);
914UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1);
915UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1);
916UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2);
917UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1);
918UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4);
919UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1);
920UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4);
921UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1);
922UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1);
923UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4);
924
925static struct attribute *ufs_sysfs_device_descriptor[] = {
926 &dev_attr_device_type.attr,
927 &dev_attr_device_class.attr,
928 &dev_attr_device_sub_class.attr,
929 &dev_attr_protocol.attr,
930 &dev_attr_number_of_luns.attr,
931 &dev_attr_number_of_wluns.attr,
932 &dev_attr_boot_enable.attr,
933 &dev_attr_descriptor_access_enable.attr,
934 &dev_attr_initial_power_mode.attr,
935 &dev_attr_high_priority_lun.attr,
936 &dev_attr_secure_removal_type.attr,
937 &dev_attr_support_security_lun.attr,
938 &dev_attr_bkops_termination_latency.attr,
939 &dev_attr_initial_active_icc_level.attr,
940 &dev_attr_specification_version.attr,
941 &dev_attr_manufacturing_date.attr,
942 &dev_attr_manufacturer_id.attr,
943 &dev_attr_rtt_capability.attr,
944 &dev_attr_rtc_update.attr,
945 &dev_attr_ufs_features.attr,
946 &dev_attr_ffu_timeout.attr,
947 &dev_attr_queue_depth.attr,
948 &dev_attr_device_version.attr,
949 &dev_attr_number_of_secure_wpa.attr,
950 &dev_attr_psa_max_data_size.attr,
951 &dev_attr_psa_state_timeout.attr,
952 &dev_attr_ext_feature_sup.attr,
953 &dev_attr_wb_presv_us_en.attr,
954 &dev_attr_wb_type.attr,
955 &dev_attr_wb_shared_alloc_units.attr,
956 NULL,
957};
958
959static const struct attribute_group ufs_sysfs_device_descriptor_group = {
960 .name = "device_descriptor",
961 .attrs = ufs_sysfs_device_descriptor,
962};
963
964#define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size) \
965 UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size)
966
967UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2);
968UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2);
969
970static struct attribute *ufs_sysfs_interconnect_descriptor[] = {
971 &dev_attr_unipro_version.attr,
972 &dev_attr_mphy_version.attr,
973 NULL,
974};
975
976static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = {
977 .name = "interconnect_descriptor",
978 .attrs = ufs_sysfs_interconnect_descriptor,
979};
980
981#define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size) \
982 UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size)
983
984UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8);
985UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1);
986UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4);
987UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1);
988UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1);
989UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1);
990UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1);
991UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1);
992UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1);
993UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1);
994UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1);
995UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1);
996UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1);
997UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1);
998UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1);
999UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1);
1000UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2);
1001UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units,
1002 _SCM_MAX_NUM_UNITS, 4);
1003UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor,
1004 _SCM_CAP_ADJ_FCTR, 2);
1005UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units,
1006 _NPM_MAX_NUM_UNITS, 4);
1007UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor,
1008 _NPM_CAP_ADJ_FCTR, 2);
1009UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units,
1010 _ENM1_MAX_NUM_UNITS, 4);
1011UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor,
1012 _ENM1_CAP_ADJ_FCTR, 2);
1013UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units,
1014 _ENM2_MAX_NUM_UNITS, 4);
1015UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor,
1016 _ENM2_CAP_ADJ_FCTR, 2);
1017UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units,
1018 _ENM3_MAX_NUM_UNITS, 4);
1019UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor,
1020 _ENM3_CAP_ADJ_FCTR, 2);
1021UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units,
1022 _ENM4_MAX_NUM_UNITS, 4);
1023UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor,
1024 _ENM4_CAP_ADJ_FCTR, 2);
1025UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4);
1026UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1);
1027UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1);
1028UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1);
1029UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1);
1030
1031
1032static struct attribute *ufs_sysfs_geometry_descriptor[] = {
1033 &dev_attr_raw_device_capacity.attr,
1034 &dev_attr_max_number_of_luns.attr,
1035 &dev_attr_segment_size.attr,
1036 &dev_attr_allocation_unit_size.attr,
1037 &dev_attr_min_addressable_block_size.attr,
1038 &dev_attr_optimal_read_block_size.attr,
1039 &dev_attr_optimal_write_block_size.attr,
1040 &dev_attr_max_in_buffer_size.attr,
1041 &dev_attr_max_out_buffer_size.attr,
1042 &dev_attr_rpmb_rw_size.attr,
1043 &dev_attr_dyn_capacity_resource_policy.attr,
1044 &dev_attr_data_ordering.attr,
1045 &dev_attr_max_number_of_contexts.attr,
1046 &dev_attr_sys_data_tag_unit_size.attr,
1047 &dev_attr_sys_data_tag_resource_size.attr,
1048 &dev_attr_secure_removal_types.attr,
1049 &dev_attr_memory_types.attr,
1050 &dev_attr_sys_code_memory_max_alloc_units.attr,
1051 &dev_attr_sys_code_memory_capacity_adjustment_factor.attr,
1052 &dev_attr_non_persist_memory_max_alloc_units.attr,
1053 &dev_attr_non_persist_memory_capacity_adjustment_factor.attr,
1054 &dev_attr_enh1_memory_max_alloc_units.attr,
1055 &dev_attr_enh1_memory_capacity_adjustment_factor.attr,
1056 &dev_attr_enh2_memory_max_alloc_units.attr,
1057 &dev_attr_enh2_memory_capacity_adjustment_factor.attr,
1058 &dev_attr_enh3_memory_max_alloc_units.attr,
1059 &dev_attr_enh3_memory_capacity_adjustment_factor.attr,
1060 &dev_attr_enh4_memory_max_alloc_units.attr,
1061 &dev_attr_enh4_memory_capacity_adjustment_factor.attr,
1062 &dev_attr_wb_max_alloc_units.attr,
1063 &dev_attr_wb_max_wb_luns.attr,
1064 &dev_attr_wb_buff_cap_adj.attr,
1065 &dev_attr_wb_sup_red_type.attr,
1066 &dev_attr_wb_sup_wb_type.attr,
1067 NULL,
1068};
1069
1070static const struct attribute_group ufs_sysfs_geometry_descriptor_group = {
1071 .name = "geometry_descriptor",
1072 .attrs = ufs_sysfs_geometry_descriptor,
1073};
1074
1075#define UFS_HEALTH_DESC_PARAM(_name, _uname, _size) \
1076 UFS_DESC_PARAM(_name, _uname, HEALTH, _size)
1077
1078UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1);
1079UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1);
1080UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1);
1081
1082static struct attribute *ufs_sysfs_health_descriptor[] = {
1083 &dev_attr_eol_info.attr,
1084 &dev_attr_life_time_estimation_a.attr,
1085 &dev_attr_life_time_estimation_b.attr,
1086 NULL,
1087};
1088
1089static const struct attribute_group ufs_sysfs_health_descriptor_group = {
1090 .name = "health_descriptor",
1091 .attrs = ufs_sysfs_health_descriptor,
1092};
1093
1094#define UFS_POWER_DESC_PARAM(_name, _uname, _index) \
1095static ssize_t _name##_index##_show(struct device *dev, \
1096 struct device_attribute *attr, char *buf) \
1097{ \
1098 struct ufs_hba *hba = dev_get_drvdata(dev); \
1099 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0, \
1100 PWR_DESC##_uname##_0 + _index * 2, buf, 2); \
1101} \
1102static DEVICE_ATTR_RO(_name##_index)
1103
1104UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0);
1105UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1);
1106UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2);
1107UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3);
1108UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4);
1109UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5);
1110UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6);
1111UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7);
1112UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8);
1113UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9);
1114UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10);
1115UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11);
1116UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12);
1117UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13);
1118UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14);
1119UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15);
1120UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0);
1121UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1);
1122UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2);
1123UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3);
1124UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4);
1125UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5);
1126UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6);
1127UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7);
1128UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8);
1129UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9);
1130UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10);
1131UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11);
1132UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12);
1133UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13);
1134UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14);
1135UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15);
1136UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0);
1137UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1);
1138UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2);
1139UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3);
1140UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4);
1141UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5);
1142UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6);
1143UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7);
1144UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8);
1145UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9);
1146UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10);
1147UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11);
1148UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12);
1149UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13);
1150UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14);
1151UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15);
1152
1153static struct attribute *ufs_sysfs_power_descriptor[] = {
1154 &dev_attr_active_icc_levels_vcc0.attr,
1155 &dev_attr_active_icc_levels_vcc1.attr,
1156 &dev_attr_active_icc_levels_vcc2.attr,
1157 &dev_attr_active_icc_levels_vcc3.attr,
1158 &dev_attr_active_icc_levels_vcc4.attr,
1159 &dev_attr_active_icc_levels_vcc5.attr,
1160 &dev_attr_active_icc_levels_vcc6.attr,
1161 &dev_attr_active_icc_levels_vcc7.attr,
1162 &dev_attr_active_icc_levels_vcc8.attr,
1163 &dev_attr_active_icc_levels_vcc9.attr,
1164 &dev_attr_active_icc_levels_vcc10.attr,
1165 &dev_attr_active_icc_levels_vcc11.attr,
1166 &dev_attr_active_icc_levels_vcc12.attr,
1167 &dev_attr_active_icc_levels_vcc13.attr,
1168 &dev_attr_active_icc_levels_vcc14.attr,
1169 &dev_attr_active_icc_levels_vcc15.attr,
1170 &dev_attr_active_icc_levels_vccq0.attr,
1171 &dev_attr_active_icc_levels_vccq1.attr,
1172 &dev_attr_active_icc_levels_vccq2.attr,
1173 &dev_attr_active_icc_levels_vccq3.attr,
1174 &dev_attr_active_icc_levels_vccq4.attr,
1175 &dev_attr_active_icc_levels_vccq5.attr,
1176 &dev_attr_active_icc_levels_vccq6.attr,
1177 &dev_attr_active_icc_levels_vccq7.attr,
1178 &dev_attr_active_icc_levels_vccq8.attr,
1179 &dev_attr_active_icc_levels_vccq9.attr,
1180 &dev_attr_active_icc_levels_vccq10.attr,
1181 &dev_attr_active_icc_levels_vccq11.attr,
1182 &dev_attr_active_icc_levels_vccq12.attr,
1183 &dev_attr_active_icc_levels_vccq13.attr,
1184 &dev_attr_active_icc_levels_vccq14.attr,
1185 &dev_attr_active_icc_levels_vccq15.attr,
1186 &dev_attr_active_icc_levels_vccq20.attr,
1187 &dev_attr_active_icc_levels_vccq21.attr,
1188 &dev_attr_active_icc_levels_vccq22.attr,
1189 &dev_attr_active_icc_levels_vccq23.attr,
1190 &dev_attr_active_icc_levels_vccq24.attr,
1191 &dev_attr_active_icc_levels_vccq25.attr,
1192 &dev_attr_active_icc_levels_vccq26.attr,
1193 &dev_attr_active_icc_levels_vccq27.attr,
1194 &dev_attr_active_icc_levels_vccq28.attr,
1195 &dev_attr_active_icc_levels_vccq29.attr,
1196 &dev_attr_active_icc_levels_vccq210.attr,
1197 &dev_attr_active_icc_levels_vccq211.attr,
1198 &dev_attr_active_icc_levels_vccq212.attr,
1199 &dev_attr_active_icc_levels_vccq213.attr,
1200 &dev_attr_active_icc_levels_vccq214.attr,
1201 &dev_attr_active_icc_levels_vccq215.attr,
1202 NULL,
1203};
1204
1205static const struct attribute_group ufs_sysfs_power_descriptor_group = {
1206 .name = "power_descriptor",
1207 .attrs = ufs_sysfs_power_descriptor,
1208};
1209
1210#define UFS_STRING_DESCRIPTOR(_name, _pname) \
1211static ssize_t _name##_show(struct device *dev, \
1212 struct device_attribute *attr, char *buf) \
1213{ \
1214 u8 index; \
1215 struct ufs_hba *hba = dev_get_drvdata(dev); \
1216 int ret; \
1217 int desc_len = QUERY_DESC_MAX_SIZE; \
1218 u8 *desc_buf; \
1219 \
1220 down(&hba->host_sem); \
1221 if (!ufshcd_is_user_access_allowed(hba)) { \
1222 up(&hba->host_sem); \
1223 return -EBUSY; \
1224 } \
1225 desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC); \
1226 if (!desc_buf) { \
1227 up(&hba->host_sem); \
1228 return -ENOMEM; \
1229 } \
1230 ufshcd_rpm_get_sync(hba); \
1231 ret = ufshcd_query_descriptor_retry(hba, \
1232 UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE, \
1233 0, 0, desc_buf, &desc_len); \
1234 if (ret) { \
1235 ret = -EINVAL; \
1236 goto out; \
1237 } \
1238 index = desc_buf[DEVICE_DESC_PARAM##_pname]; \
1239 kfree(desc_buf); \
1240 desc_buf = NULL; \
1241 ret = ufshcd_read_string_desc(hba, index, &desc_buf, \
1242 SD_ASCII_STD); \
1243 if (ret < 0) \
1244 goto out; \
1245 ret = sysfs_emit(buf, "%s\n", desc_buf); \
1246out: \
1247 ufshcd_rpm_put_sync(hba); \
1248 kfree(desc_buf); \
1249 up(&hba->host_sem); \
1250 return ret; \
1251} \
1252static DEVICE_ATTR_RO(_name)
1253
1254UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME);
1255UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME);
1256UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID);
1257UFS_STRING_DESCRIPTOR(serial_number, _SN);
1258UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV);
1259
1260static struct attribute *ufs_sysfs_string_descriptors[] = {
1261 &dev_attr_manufacturer_name.attr,
1262 &dev_attr_product_name.attr,
1263 &dev_attr_oem_id.attr,
1264 &dev_attr_serial_number.attr,
1265 &dev_attr_product_revision.attr,
1266 NULL,
1267};
1268
1269static const struct attribute_group ufs_sysfs_string_descriptors_group = {
1270 .name = "string_descriptors",
1271 .attrs = ufs_sysfs_string_descriptors,
1272};
1273
1274static inline bool ufshcd_is_wb_flags(enum flag_idn idn)
1275{
1276 return idn >= QUERY_FLAG_IDN_WB_EN &&
1277 idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8;
1278}
1279
1280#define UFS_FLAG(_name, _uname) \
1281static ssize_t _name##_show(struct device *dev, \
1282 struct device_attribute *attr, char *buf) \
1283{ \
1284 bool flag; \
1285 u8 index = 0; \
1286 int ret; \
1287 struct ufs_hba *hba = dev_get_drvdata(dev); \
1288 \
1289 down(&hba->host_sem); \
1290 if (!ufshcd_is_user_access_allowed(hba)) { \
1291 up(&hba->host_sem); \
1292 return -EBUSY; \
1293 } \
1294 if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname)) \
1295 index = ufshcd_wb_get_query_index(hba); \
1296 ufshcd_rpm_get_sync(hba); \
1297 ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \
1298 QUERY_FLAG_IDN##_uname, index, &flag); \
1299 ufshcd_rpm_put_sync(hba); \
1300 if (ret) { \
1301 ret = -EINVAL; \
1302 goto out; \
1303 } \
1304 ret = sysfs_emit(buf, "%s\n", flag ? "true" : "false"); \
1305out: \
1306 up(&hba->host_sem); \
1307 return ret; \
1308} \
1309static DEVICE_ATTR_RO(_name)
1310
1311UFS_FLAG(device_init, _FDEVICEINIT);
1312UFS_FLAG(permanent_wpe, _PERMANENT_WPE);
1313UFS_FLAG(power_on_wpe, _PWR_ON_WPE);
1314UFS_FLAG(bkops_enable, _BKOPS_EN);
1315UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE);
1316UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL);
1317UFS_FLAG(busy_rtc, _BUSY_RTC);
1318UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE);
1319UFS_FLAG(wb_enable, _WB_EN);
1320UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN);
1321UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8);
1322
1323static struct attribute *ufs_sysfs_device_flags[] = {
1324 &dev_attr_device_init.attr,
1325 &dev_attr_permanent_wpe.attr,
1326 &dev_attr_power_on_wpe.attr,
1327 &dev_attr_bkops_enable.attr,
1328 &dev_attr_life_span_mode_enable.attr,
1329 &dev_attr_phy_resource_removal.attr,
1330 &dev_attr_busy_rtc.attr,
1331 &dev_attr_disable_fw_update.attr,
1332 &dev_attr_wb_enable.attr,
1333 &dev_attr_wb_flush_en.attr,
1334 &dev_attr_wb_flush_during_h8.attr,
1335 NULL,
1336};
1337
1338static const struct attribute_group ufs_sysfs_flags_group = {
1339 .name = "flags",
1340 .attrs = ufs_sysfs_device_flags,
1341};
1342
1343static inline bool ufshcd_is_wb_attrs(enum attr_idn idn)
1344{
1345 return idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS &&
1346 idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE;
1347}
1348
1349#define UFS_ATTRIBUTE(_name, _uname) \
1350static ssize_t _name##_show(struct device *dev, \
1351 struct device_attribute *attr, char *buf) \
1352{ \
1353 struct ufs_hba *hba = dev_get_drvdata(dev); \
1354 u32 value; \
1355 int ret; \
1356 u8 index = 0; \
1357 \
1358 down(&hba->host_sem); \
1359 if (!ufshcd_is_user_access_allowed(hba)) { \
1360 up(&hba->host_sem); \
1361 return -EBUSY; \
1362 } \
1363 if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname)) \
1364 index = ufshcd_wb_get_query_index(hba); \
1365 ufshcd_rpm_get_sync(hba); \
1366 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR, \
1367 QUERY_ATTR_IDN##_uname, index, 0, &value); \
1368 ufshcd_rpm_put_sync(hba); \
1369 if (ret) { \
1370 ret = -EINVAL; \
1371 goto out; \
1372 } \
1373 ret = sysfs_emit(buf, "0x%08X\n", value); \
1374out: \
1375 up(&hba->host_sem); \
1376 return ret; \
1377} \
1378static DEVICE_ATTR_RO(_name)
1379
1380UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN);
1381UFS_ATTRIBUTE(current_power_mode, _POWER_MODE);
1382UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL);
1383UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN);
1384UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS);
1385UFS_ATTRIBUTE(purge_status, _PURGE_STATUS);
1386UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN);
1387UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT);
1388UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ);
1389UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK);
1390UFS_ATTRIBUTE(max_number_of_rtt, _MAX_NUM_OF_RTT);
1391UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL);
1392UFS_ATTRIBUTE(exception_event_status, _EE_STATUS);
1393UFS_ATTRIBUTE(ffu_status, _FFU_STATUS);
1394UFS_ATTRIBUTE(psa_state, _PSA_STATE);
1395UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE);
1396UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS);
1397UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE);
1398UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST);
1399UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE);
1400
1401
1402static struct attribute *ufs_sysfs_attributes[] = {
1403 &dev_attr_boot_lun_enabled.attr,
1404 &dev_attr_current_power_mode.attr,
1405 &dev_attr_active_icc_level.attr,
1406 &dev_attr_ooo_data_enabled.attr,
1407 &dev_attr_bkops_status.attr,
1408 &dev_attr_purge_status.attr,
1409 &dev_attr_max_data_in_size.attr,
1410 &dev_attr_max_data_out_size.attr,
1411 &dev_attr_reference_clock_frequency.attr,
1412 &dev_attr_configuration_descriptor_lock.attr,
1413 &dev_attr_max_number_of_rtt.attr,
1414 &dev_attr_exception_event_control.attr,
1415 &dev_attr_exception_event_status.attr,
1416 &dev_attr_ffu_status.attr,
1417 &dev_attr_psa_state.attr,
1418 &dev_attr_psa_data_size.attr,
1419 &dev_attr_wb_flush_status.attr,
1420 &dev_attr_wb_avail_buf.attr,
1421 &dev_attr_wb_life_time_est.attr,
1422 &dev_attr_wb_cur_buf.attr,
1423 NULL,
1424};
1425
1426static const struct attribute_group ufs_sysfs_attributes_group = {
1427 .name = "attributes",
1428 .attrs = ufs_sysfs_attributes,
1429};
1430
1431static const struct attribute_group *ufs_sysfs_groups[] = {
1432 &ufs_sysfs_default_group,
1433 &ufs_sysfs_capabilities_group,
1434 &ufs_sysfs_monitor_group,
1435 &ufs_sysfs_power_info_group,
1436 &ufs_sysfs_device_descriptor_group,
1437 &ufs_sysfs_interconnect_descriptor_group,
1438 &ufs_sysfs_geometry_descriptor_group,
1439 &ufs_sysfs_health_descriptor_group,
1440 &ufs_sysfs_power_descriptor_group,
1441 &ufs_sysfs_string_descriptors_group,
1442 &ufs_sysfs_flags_group,
1443 &ufs_sysfs_attributes_group,
1444 NULL,
1445};
1446
1447#define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size) \
1448static ssize_t _pname##_show(struct device *dev, \
1449 struct device_attribute *attr, char *buf) \
1450{ \
1451 struct scsi_device *sdev = to_scsi_device(dev); \
1452 struct ufs_hba *hba = shost_priv(sdev->host); \
1453 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun); \
1454 if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun)) \
1455 return -EINVAL; \
1456 return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname, \
1457 lun, _duname##_DESC_PARAM##_puname, buf, _size); \
1458} \
1459static DEVICE_ATTR_RO(_pname)
1460
1461#define UFS_UNIT_DESC_PARAM(_name, _uname, _size) \
1462 UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size)
1463
1464UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1);
1465UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1);
1466UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1);
1467UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1);
1468UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1);
1469UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1);
1470UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1);
1471UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1);
1472UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8);
1473UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4);
1474UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1);
1475UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8);
1476UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2);
1477UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1);
1478UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4);
1479
1480static struct attribute *ufs_sysfs_unit_descriptor[] = {
1481 &dev_attr_lu_enable.attr,
1482 &dev_attr_boot_lun_id.attr,
1483 &dev_attr_lun_write_protect.attr,
1484 &dev_attr_lun_queue_depth.attr,
1485 &dev_attr_psa_sensitive.attr,
1486 &dev_attr_lun_memory_type.attr,
1487 &dev_attr_data_reliability.attr,
1488 &dev_attr_logical_block_size.attr,
1489 &dev_attr_logical_block_count.attr,
1490 &dev_attr_erase_block_size.attr,
1491 &dev_attr_provisioning_type.attr,
1492 &dev_attr_physical_memory_resourse_count.attr,
1493 &dev_attr_context_capabilities.attr,
1494 &dev_attr_large_unit_granularity.attr,
1495 &dev_attr_wb_buf_alloc_units.attr,
1496 NULL,
1497};
1498
1499static umode_t ufs_unit_descriptor_is_visible(struct kobject *kobj, struct attribute *attr, int n)
1500{
1501 struct device *dev = container_of(kobj, struct device, kobj);
1502 struct scsi_device *sdev = to_scsi_device(dev);
1503 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
1504 umode_t mode = attr->mode;
1505
1506 if (lun == UFS_UPIU_BOOT_WLUN || lun == UFS_UPIU_UFS_DEVICE_WLUN)
1507 /* Boot and device WLUN have no unit descriptors */
1508 mode = 0;
1509 if (lun == UFS_UPIU_RPMB_WLUN && attr == &dev_attr_wb_buf_alloc_units.attr)
1510 mode = 0;
1511
1512 return mode;
1513}
1514
1515
1516const struct attribute_group ufs_sysfs_unit_descriptor_group = {
1517 .name = "unit_descriptor",
1518 .attrs = ufs_sysfs_unit_descriptor,
1519 .is_visible = ufs_unit_descriptor_is_visible,
1520};
1521
1522static ssize_t dyn_cap_needed_attribute_show(struct device *dev,
1523 struct device_attribute *attr, char *buf)
1524{
1525 u32 value;
1526 struct scsi_device *sdev = to_scsi_device(dev);
1527 struct ufs_hba *hba = shost_priv(sdev->host);
1528 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
1529 int ret;
1530
1531 down(&hba->host_sem);
1532 if (!ufshcd_is_user_access_allowed(hba)) {
1533 ret = -EBUSY;
1534 goto out;
1535 }
1536
1537 ufshcd_rpm_get_sync(hba);
1538 ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,
1539 QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value);
1540 ufshcd_rpm_put_sync(hba);
1541 if (ret) {
1542 ret = -EINVAL;
1543 goto out;
1544 }
1545
1546 ret = sysfs_emit(buf, "0x%08X\n", value);
1547
1548out:
1549 up(&hba->host_sem);
1550 return ret;
1551}
1552static DEVICE_ATTR_RO(dyn_cap_needed_attribute);
1553
1554static struct attribute *ufs_sysfs_lun_attributes[] = {
1555 &dev_attr_dyn_cap_needed_attribute.attr,
1556 NULL,
1557};
1558
1559const struct attribute_group ufs_sysfs_lun_attributes_group = {
1560 .attrs = ufs_sysfs_lun_attributes,
1561};
1562
1563void ufs_sysfs_add_nodes(struct device *dev)
1564{
1565 int ret;
1566
1567 ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups);
1568 if (ret)
1569 dev_err(dev,
1570 "%s: sysfs groups creation failed (err = %d)\n",
1571 __func__, ret);
1572}
1573
1574void ufs_sysfs_remove_nodes(struct device *dev)
1575{
1576 sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups);
1577}