xref: /linux/drivers/ufs/core/ufs-sysfs.c (revision 2e3fcbcc3b0eb9b96d2912cdac920f0ae8d1c8f2)
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 <linux/unaligned.h>
8 
9 #include <ufs/ufs.h>
10 #include <ufs/unipro.h>
11 #include "ufs-sysfs.h"
12 #include "ufshcd-priv.h"
13 
ufs_pa_pwr_mode_to_string(enum ufs_pa_pwr_mode mode)14 static const char *ufs_pa_pwr_mode_to_string(enum ufs_pa_pwr_mode mode)
15 {
16 	switch (mode) {
17 	case FAST_MODE:		return "FAST_MODE";
18 	case SLOW_MODE:		return "SLOW_MODE";
19 	case FASTAUTO_MODE:	return "FASTAUTO_MODE";
20 	case SLOWAUTO_MODE:	return "SLOWAUTO_MODE";
21 	default:		return "UNKNOWN";
22 	}
23 }
24 
ufs_hs_gear_rate_to_string(enum ufs_hs_gear_rate rate)25 static const char *ufs_hs_gear_rate_to_string(enum ufs_hs_gear_rate rate)
26 {
27 	switch (rate) {
28 	case PA_HS_MODE_A:	return "HS_RATE_A";
29 	case PA_HS_MODE_B:	return "HS_RATE_B";
30 	default:		return "UNKNOWN";
31 	}
32 }
33 
ufs_pwm_gear_to_string(enum ufs_pwm_gear_tag gear)34 static const char *ufs_pwm_gear_to_string(enum ufs_pwm_gear_tag gear)
35 {
36 	switch (gear) {
37 	case UFS_PWM_G1:	return "PWM_GEAR1";
38 	case UFS_PWM_G2:	return "PWM_GEAR2";
39 	case UFS_PWM_G3:	return "PWM_GEAR3";
40 	case UFS_PWM_G4:	return "PWM_GEAR4";
41 	case UFS_PWM_G5:	return "PWM_GEAR5";
42 	case UFS_PWM_G6:	return "PWM_GEAR6";
43 	case UFS_PWM_G7:	return "PWM_GEAR7";
44 	default:		return "UNKNOWN";
45 	}
46 }
47 
ufs_hs_gear_to_string(enum ufs_hs_gear_tag gear)48 static const char *ufs_hs_gear_to_string(enum ufs_hs_gear_tag gear)
49 {
50 	switch (gear) {
51 	case UFS_HS_G1:	return "HS_GEAR1";
52 	case UFS_HS_G2:	return "HS_GEAR2";
53 	case UFS_HS_G3:	return "HS_GEAR3";
54 	case UFS_HS_G4:	return "HS_GEAR4";
55 	case UFS_HS_G5:	return "HS_GEAR5";
56 	default:	return "UNKNOWN";
57 	}
58 }
59 
ufshcd_uic_link_state_to_string(enum uic_link_state state)60 static const char *ufshcd_uic_link_state_to_string(
61 			enum uic_link_state state)
62 {
63 	switch (state) {
64 	case UIC_LINK_OFF_STATE:	return "OFF";
65 	case UIC_LINK_ACTIVE_STATE:	return "ACTIVE";
66 	case UIC_LINK_HIBERN8_STATE:	return "HIBERN8";
67 	case UIC_LINK_BROKEN_STATE:	return "BROKEN";
68 	default:			return "UNKNOWN";
69 	}
70 }
71 
ufshcd_ufs_dev_pwr_mode_to_string(enum ufs_dev_pwr_mode state)72 static const char *ufshcd_ufs_dev_pwr_mode_to_string(
73 			enum ufs_dev_pwr_mode state)
74 {
75 	switch (state) {
76 	case UFS_ACTIVE_PWR_MODE:	return "ACTIVE";
77 	case UFS_SLEEP_PWR_MODE:	return "SLEEP";
78 	case UFS_POWERDOWN_PWR_MODE:	return "POWERDOWN";
79 	case UFS_DEEPSLEEP_PWR_MODE:	return "DEEPSLEEP";
80 	default:			return "UNKNOWN";
81 	}
82 }
83 
ufs_sysfs_pm_lvl_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count,bool rpm)84 static inline ssize_t ufs_sysfs_pm_lvl_store(struct device *dev,
85 					     struct device_attribute *attr,
86 					     const char *buf, size_t count,
87 					     bool rpm)
88 {
89 	struct ufs_hba *hba = dev_get_drvdata(dev);
90 	struct ufs_dev_info *dev_info = &hba->dev_info;
91 	unsigned long flags, value;
92 
93 	if (kstrtoul(buf, 0, &value))
94 		return -EINVAL;
95 
96 	if (value >= UFS_PM_LVL_MAX)
97 		return -EINVAL;
98 
99 	if (ufs_pm_lvl_states[value].dev_state == UFS_DEEPSLEEP_PWR_MODE &&
100 	    (!(hba->caps & UFSHCD_CAP_DEEPSLEEP) ||
101 	     !(dev_info->wspecversion >= 0x310)))
102 		return -EINVAL;
103 
104 	spin_lock_irqsave(hba->host->host_lock, flags);
105 	if (rpm)
106 		hba->rpm_lvl = value;
107 	else
108 		hba->spm_lvl = value;
109 	spin_unlock_irqrestore(hba->host->host_lock, flags);
110 	return count;
111 }
112 
rpm_lvl_show(struct device * dev,struct device_attribute * attr,char * buf)113 static ssize_t rpm_lvl_show(struct device *dev,
114 		struct device_attribute *attr, char *buf)
115 {
116 	struct ufs_hba *hba = dev_get_drvdata(dev);
117 
118 	return sysfs_emit(buf, "%d\n", hba->rpm_lvl);
119 }
120 
rpm_lvl_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)121 static ssize_t rpm_lvl_store(struct device *dev,
122 		struct device_attribute *attr, const char *buf, size_t count)
123 {
124 	return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, true);
125 }
126 
rpm_target_dev_state_show(struct device * dev,struct device_attribute * attr,char * buf)127 static ssize_t rpm_target_dev_state_show(struct device *dev,
128 		struct device_attribute *attr, char *buf)
129 {
130 	struct ufs_hba *hba = dev_get_drvdata(dev);
131 
132 	return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(
133 			ufs_pm_lvl_states[hba->rpm_lvl].dev_state));
134 }
135 
rpm_target_link_state_show(struct device * dev,struct device_attribute * attr,char * buf)136 static ssize_t rpm_target_link_state_show(struct device *dev,
137 		struct device_attribute *attr, char *buf)
138 {
139 	struct ufs_hba *hba = dev_get_drvdata(dev);
140 
141 	return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(
142 			ufs_pm_lvl_states[hba->rpm_lvl].link_state));
143 }
144 
spm_lvl_show(struct device * dev,struct device_attribute * attr,char * buf)145 static ssize_t spm_lvl_show(struct device *dev,
146 		struct device_attribute *attr, char *buf)
147 {
148 	struct ufs_hba *hba = dev_get_drvdata(dev);
149 
150 	return sysfs_emit(buf, "%d\n", hba->spm_lvl);
151 }
152 
spm_lvl_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)153 static ssize_t spm_lvl_store(struct device *dev,
154 		struct device_attribute *attr, const char *buf, size_t count)
155 {
156 	return ufs_sysfs_pm_lvl_store(dev, attr, buf, count, false);
157 }
158 
spm_target_dev_state_show(struct device * dev,struct device_attribute * attr,char * buf)159 static ssize_t spm_target_dev_state_show(struct device *dev,
160 		struct device_attribute *attr, char *buf)
161 {
162 	struct ufs_hba *hba = dev_get_drvdata(dev);
163 
164 	return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(
165 				ufs_pm_lvl_states[hba->spm_lvl].dev_state));
166 }
167 
spm_target_link_state_show(struct device * dev,struct device_attribute * attr,char * buf)168 static ssize_t spm_target_link_state_show(struct device *dev,
169 		struct device_attribute *attr, char *buf)
170 {
171 	struct ufs_hba *hba = dev_get_drvdata(dev);
172 
173 	return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(
174 				ufs_pm_lvl_states[hba->spm_lvl].link_state));
175 }
176 
177 /* Convert Auto-Hibernate Idle Timer register value to microseconds */
ufshcd_ahit_to_us(u32 ahit)178 static int ufshcd_ahit_to_us(u32 ahit)
179 {
180 	int timer = FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, ahit);
181 	int scale = FIELD_GET(UFSHCI_AHIBERN8_SCALE_MASK, ahit);
182 
183 	for (; scale > 0; --scale)
184 		timer *= UFSHCI_AHIBERN8_SCALE_FACTOR;
185 
186 	return timer;
187 }
188 
189 /* Convert microseconds to Auto-Hibernate Idle Timer register value */
ufshcd_us_to_ahit(unsigned int timer)190 static u32 ufshcd_us_to_ahit(unsigned int timer)
191 {
192 	unsigned int scale;
193 
194 	for (scale = 0; timer > UFSHCI_AHIBERN8_TIMER_MASK; ++scale)
195 		timer /= UFSHCI_AHIBERN8_SCALE_FACTOR;
196 
197 	return FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, timer) |
198 	       FIELD_PREP(UFSHCI_AHIBERN8_SCALE_MASK, scale);
199 }
200 
ufshcd_read_hci_reg(struct ufs_hba * hba,u32 * val,unsigned int reg)201 static int ufshcd_read_hci_reg(struct ufs_hba *hba, u32 *val, unsigned int reg)
202 {
203 	down(&hba->host_sem);
204 	if (!ufshcd_is_user_access_allowed(hba)) {
205 		up(&hba->host_sem);
206 		return -EBUSY;
207 	}
208 
209 	ufshcd_rpm_get_sync(hba);
210 	ufshcd_hold(hba);
211 	*val = ufshcd_readl(hba, reg);
212 	ufshcd_release(hba);
213 	ufshcd_rpm_put_sync(hba);
214 
215 	up(&hba->host_sem);
216 	return 0;
217 }
218 
auto_hibern8_show(struct device * dev,struct device_attribute * attr,char * buf)219 static ssize_t auto_hibern8_show(struct device *dev,
220 				 struct device_attribute *attr, char *buf)
221 {
222 	u32 ahit;
223 	int ret;
224 	struct ufs_hba *hba = dev_get_drvdata(dev);
225 
226 	if (!ufshcd_is_auto_hibern8_supported(hba))
227 		return -EOPNOTSUPP;
228 
229 	ret = ufshcd_read_hci_reg(hba, &ahit, REG_AUTO_HIBERNATE_IDLE_TIMER);
230 	if (ret)
231 		return ret;
232 
233 	return sysfs_emit(buf, "%d\n", ufshcd_ahit_to_us(ahit));
234 }
235 
auto_hibern8_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)236 static ssize_t auto_hibern8_store(struct device *dev,
237 				  struct device_attribute *attr,
238 				  const char *buf, size_t count)
239 {
240 	struct ufs_hba *hba = dev_get_drvdata(dev);
241 	unsigned int timer;
242 	int ret = 0;
243 
244 	if (!ufshcd_is_auto_hibern8_supported(hba))
245 		return -EOPNOTSUPP;
246 
247 	if (kstrtouint(buf, 0, &timer))
248 		return -EINVAL;
249 
250 	if (timer > UFSHCI_AHIBERN8_MAX)
251 		return -EINVAL;
252 
253 	down(&hba->host_sem);
254 	if (!ufshcd_is_user_access_allowed(hba)) {
255 		ret = -EBUSY;
256 		goto out;
257 	}
258 
259 	ufshcd_auto_hibern8_update(hba, ufshcd_us_to_ahit(timer));
260 
261 out:
262 	up(&hba->host_sem);
263 	return ret ? ret : count;
264 }
265 
wb_on_show(struct device * dev,struct device_attribute * attr,char * buf)266 static ssize_t wb_on_show(struct device *dev, struct device_attribute *attr,
267 			  char *buf)
268 {
269 	struct ufs_hba *hba = dev_get_drvdata(dev);
270 
271 	return sysfs_emit(buf, "%d\n", hba->dev_info.wb_enabled);
272 }
273 
wb_on_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)274 static ssize_t wb_on_store(struct device *dev, struct device_attribute *attr,
275 			   const char *buf, size_t count)
276 {
277 	struct ufs_hba *hba = dev_get_drvdata(dev);
278 	unsigned int wb_enable;
279 	ssize_t res;
280 
281 	if (!ufshcd_is_wb_allowed(hba) || (ufshcd_is_clkscaling_supported(hba)
282 		&& ufshcd_enable_wb_if_scaling_up(hba))) {
283 		/*
284 		 * If the platform supports UFSHCD_CAP_CLK_SCALING, turn WB
285 		 * on/off will be done while clock scaling up/down.
286 		 */
287 		dev_warn(dev, "It is not allowed to configure WB!\n");
288 		return -EOPNOTSUPP;
289 	}
290 
291 	if (kstrtouint(buf, 0, &wb_enable))
292 		return -EINVAL;
293 
294 	if (wb_enable != 0 && wb_enable != 1)
295 		return -EINVAL;
296 
297 	down(&hba->host_sem);
298 	if (!ufshcd_is_user_access_allowed(hba)) {
299 		res = -EBUSY;
300 		goto out;
301 	}
302 
303 	ufshcd_rpm_get_sync(hba);
304 	res = ufshcd_wb_toggle(hba, wb_enable);
305 	ufshcd_rpm_put_sync(hba);
306 out:
307 	up(&hba->host_sem);
308 	return res < 0 ? res : count;
309 }
310 
rtc_update_ms_show(struct device * dev,struct device_attribute * attr,char * buf)311 static ssize_t rtc_update_ms_show(struct device *dev, struct device_attribute *attr,
312 				  char *buf)
313 {
314 	struct ufs_hba *hba = dev_get_drvdata(dev);
315 
316 	return sysfs_emit(buf, "%d\n", hba->dev_info.rtc_update_period);
317 }
318 
rtc_update_ms_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)319 static ssize_t rtc_update_ms_store(struct device *dev, struct device_attribute *attr,
320 				   const char *buf, size_t count)
321 {
322 	struct ufs_hba *hba = dev_get_drvdata(dev);
323 	unsigned int ms;
324 	bool resume_period_update = false;
325 
326 	if (kstrtouint(buf, 0, &ms))
327 		return -EINVAL;
328 
329 	if (!hba->dev_info.rtc_update_period && ms > 0)
330 		resume_period_update =  true;
331 	/* Minimum and maximum update frequency should be synchronized with all UFS vendors */
332 	hba->dev_info.rtc_update_period = ms;
333 
334 	if (resume_period_update)
335 		schedule_delayed_work(&hba->ufs_rtc_update_work,
336 				      msecs_to_jiffies(hba->dev_info.rtc_update_period));
337 	return count;
338 }
339 
enable_wb_buf_flush_show(struct device * dev,struct device_attribute * attr,char * buf)340 static ssize_t enable_wb_buf_flush_show(struct device *dev,
341 				    struct device_attribute *attr,
342 				    char *buf)
343 {
344 	struct ufs_hba *hba = dev_get_drvdata(dev);
345 
346 	return sysfs_emit(buf, "%d\n", hba->dev_info.wb_buf_flush_enabled);
347 }
348 
enable_wb_buf_flush_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)349 static ssize_t enable_wb_buf_flush_store(struct device *dev,
350 				     struct device_attribute *attr,
351 				     const char *buf, size_t count)
352 {
353 	struct ufs_hba *hba = dev_get_drvdata(dev);
354 	unsigned int enable_wb_buf_flush;
355 	ssize_t res;
356 
357 	if (!ufshcd_is_wb_buf_flush_allowed(hba)) {
358 		dev_warn(dev, "It is not allowed to configure WB buf flushing!\n");
359 		return -EOPNOTSUPP;
360 	}
361 
362 	if (kstrtouint(buf, 0, &enable_wb_buf_flush))
363 		return -EINVAL;
364 
365 	if (enable_wb_buf_flush != 0 && enable_wb_buf_flush != 1)
366 		return -EINVAL;
367 
368 	down(&hba->host_sem);
369 	if (!ufshcd_is_user_access_allowed(hba)) {
370 		res = -EBUSY;
371 		goto out;
372 	}
373 
374 	ufshcd_rpm_get_sync(hba);
375 	res = ufshcd_wb_toggle_buf_flush(hba, enable_wb_buf_flush);
376 	ufshcd_rpm_put_sync(hba);
377 
378 out:
379 	up(&hba->host_sem);
380 	return res < 0 ? res : count;
381 }
382 
wb_flush_threshold_show(struct device * dev,struct device_attribute * attr,char * buf)383 static ssize_t wb_flush_threshold_show(struct device *dev,
384 					 struct device_attribute *attr,
385 					 char *buf)
386 {
387 	struct ufs_hba *hba = dev_get_drvdata(dev);
388 
389 	return sysfs_emit(buf, "%u\n", hba->vps->wb_flush_threshold);
390 }
391 
wb_flush_threshold_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)392 static ssize_t wb_flush_threshold_store(struct device *dev,
393 					  struct device_attribute *attr,
394 					  const char *buf, size_t count)
395 {
396 	struct ufs_hba *hba = dev_get_drvdata(dev);
397 	unsigned int wb_flush_threshold;
398 
399 	if (kstrtouint(buf, 0, &wb_flush_threshold))
400 		return -EINVAL;
401 
402 	/* The range of values for wb_flush_threshold is (0,10] */
403 	if (wb_flush_threshold > UFS_WB_BUF_REMAIN_PERCENT(100) ||
404 	    wb_flush_threshold == 0) {
405 		dev_err(dev, "The value of wb_flush_threshold is invalid!\n");
406 		return -EINVAL;
407 	}
408 
409 	hba->vps->wb_flush_threshold = wb_flush_threshold;
410 
411 	return count;
412 }
413 
414 /**
415  * pm_qos_enable_show - sysfs handler to show pm qos enable value
416  * @dev: device associated with the UFS controller
417  * @attr: sysfs attribute handle
418  * @buf: buffer for sysfs file
419  *
420  * Print 1 if PM QoS feature is enabled, 0 if disabled.
421  *
422  * Returns number of characters written to @buf.
423  */
pm_qos_enable_show(struct device * dev,struct device_attribute * attr,char * buf)424 static ssize_t pm_qos_enable_show(struct device *dev,
425 		struct device_attribute *attr, char *buf)
426 {
427 	struct ufs_hba *hba = dev_get_drvdata(dev);
428 
429 	return sysfs_emit(buf, "%d\n", hba->pm_qos_enabled);
430 }
431 
432 /**
433  * pm_qos_enable_store - sysfs handler to store value
434  * @dev: device associated with the UFS controller
435  * @attr: sysfs attribute handle
436  * @buf: buffer for sysfs file
437  * @count: stores buffer characters count
438  *
439  * Input 0 to disable PM QoS and 1 value to enable.
440  * Default state: 1
441  *
442  * Return: number of characters written to @buf on success, < 0 upon failure.
443  */
pm_qos_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)444 static ssize_t pm_qos_enable_store(struct device *dev,
445 		struct device_attribute *attr, const char *buf, size_t count)
446 {
447 	struct ufs_hba *hba = dev_get_drvdata(dev);
448 	bool value;
449 
450 	if (kstrtobool(buf, &value))
451 		return -EINVAL;
452 
453 	if (value)
454 		ufshcd_pm_qos_init(hba);
455 	else
456 		ufshcd_pm_qos_exit(hba);
457 
458 	return count;
459 }
460 
critical_health_show(struct device * dev,struct device_attribute * attr,char * buf)461 static ssize_t critical_health_show(struct device *dev,
462 				    struct device_attribute *attr, char *buf)
463 {
464 	struct ufs_hba *hba = dev_get_drvdata(dev);
465 
466 	return sysfs_emit(buf, "%d\n", hba->critical_health_count);
467 }
468 
469 static DEVICE_ATTR_RW(rpm_lvl);
470 static DEVICE_ATTR_RO(rpm_target_dev_state);
471 static DEVICE_ATTR_RO(rpm_target_link_state);
472 static DEVICE_ATTR_RW(spm_lvl);
473 static DEVICE_ATTR_RO(spm_target_dev_state);
474 static DEVICE_ATTR_RO(spm_target_link_state);
475 static DEVICE_ATTR_RW(auto_hibern8);
476 static DEVICE_ATTR_RW(wb_on);
477 static DEVICE_ATTR_RW(enable_wb_buf_flush);
478 static DEVICE_ATTR_RW(wb_flush_threshold);
479 static DEVICE_ATTR_RW(rtc_update_ms);
480 static DEVICE_ATTR_RW(pm_qos_enable);
481 static DEVICE_ATTR_RO(critical_health);
482 
483 static struct attribute *ufs_sysfs_ufshcd_attrs[] = {
484 	&dev_attr_rpm_lvl.attr,
485 	&dev_attr_rpm_target_dev_state.attr,
486 	&dev_attr_rpm_target_link_state.attr,
487 	&dev_attr_spm_lvl.attr,
488 	&dev_attr_spm_target_dev_state.attr,
489 	&dev_attr_spm_target_link_state.attr,
490 	&dev_attr_auto_hibern8.attr,
491 	&dev_attr_wb_on.attr,
492 	&dev_attr_enable_wb_buf_flush.attr,
493 	&dev_attr_wb_flush_threshold.attr,
494 	&dev_attr_rtc_update_ms.attr,
495 	&dev_attr_pm_qos_enable.attr,
496 	&dev_attr_critical_health.attr,
497 	NULL
498 };
499 
500 static const struct attribute_group ufs_sysfs_default_group = {
501 	.attrs = ufs_sysfs_ufshcd_attrs,
502 };
503 
clock_scaling_show(struct device * dev,struct device_attribute * attr,char * buf)504 static ssize_t clock_scaling_show(struct device *dev, struct device_attribute *attr,
505 				  char *buf)
506 {
507 	struct ufs_hba *hba = dev_get_drvdata(dev);
508 
509 	return sysfs_emit(buf, "%d\n", ufshcd_is_clkscaling_supported(hba));
510 }
511 
write_booster_show(struct device * dev,struct device_attribute * attr,char * buf)512 static ssize_t write_booster_show(struct device *dev, struct device_attribute *attr,
513 				  char *buf)
514 {
515 	struct ufs_hba *hba = dev_get_drvdata(dev);
516 
517 	return sysfs_emit(buf, "%d\n", ufshcd_is_wb_allowed(hba));
518 }
519 
520 static DEVICE_ATTR_RO(clock_scaling);
521 static DEVICE_ATTR_RO(write_booster);
522 
523 /*
524  * See Documentation/ABI/testing/sysfs-driver-ufs for the semantics of this
525  * group.
526  */
527 static struct attribute *ufs_sysfs_capabilities_attrs[] = {
528 	&dev_attr_clock_scaling.attr,
529 	&dev_attr_write_booster.attr,
530 	NULL
531 };
532 
533 static const struct attribute_group ufs_sysfs_capabilities_group = {
534 	.name = "capabilities",
535 	.attrs = ufs_sysfs_capabilities_attrs,
536 };
537 
version_show(struct device * dev,struct device_attribute * attr,char * buf)538 static ssize_t version_show(struct device *dev,
539 		struct device_attribute *attr, char *buf)
540 {
541 	struct ufs_hba *hba = dev_get_drvdata(dev);
542 
543 	return sysfs_emit(buf, "0x%x\n", hba->ufs_version);
544 }
545 
product_id_show(struct device * dev,struct device_attribute * attr,char * buf)546 static ssize_t product_id_show(struct device *dev,
547 		struct device_attribute *attr, char *buf)
548 {
549 	int ret;
550 	u32 val;
551 	struct ufs_hba *hba = dev_get_drvdata(dev);
552 
553 	ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_PID);
554 	if (ret)
555 		return ret;
556 
557 	return sysfs_emit(buf, "0x%x\n", val);
558 }
559 
man_id_show(struct device * dev,struct device_attribute * attr,char * buf)560 static ssize_t man_id_show(struct device *dev,
561 		struct device_attribute *attr, char *buf)
562 {
563 	int ret;
564 	u32 val;
565 	struct ufs_hba *hba = dev_get_drvdata(dev);
566 
567 	ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_MID);
568 	if (ret)
569 		return ret;
570 
571 	return sysfs_emit(buf, "0x%x\n", val);
572 }
573 
574 static DEVICE_ATTR_RO(version);
575 static DEVICE_ATTR_RO(product_id);
576 static DEVICE_ATTR_RO(man_id);
577 
578 static struct attribute *ufs_sysfs_ufshci_cap_attrs[] = {
579 	&dev_attr_version.attr,
580 	&dev_attr_product_id.attr,
581 	&dev_attr_man_id.attr,
582 	NULL
583 };
584 
585 static const struct attribute_group ufs_sysfs_ufshci_group = {
586 	.name = "ufshci_capabilities",
587 	.attrs = ufs_sysfs_ufshci_cap_attrs,
588 };
589 
monitor_enable_show(struct device * dev,struct device_attribute * attr,char * buf)590 static ssize_t monitor_enable_show(struct device *dev,
591 				   struct device_attribute *attr, char *buf)
592 {
593 	struct ufs_hba *hba = dev_get_drvdata(dev);
594 
595 	return sysfs_emit(buf, "%d\n", hba->monitor.enabled);
596 }
597 
monitor_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)598 static ssize_t monitor_enable_store(struct device *dev,
599 				    struct device_attribute *attr,
600 				    const char *buf, size_t count)
601 {
602 	struct ufs_hba *hba = dev_get_drvdata(dev);
603 	unsigned long value, flags;
604 
605 	if (kstrtoul(buf, 0, &value))
606 		return -EINVAL;
607 
608 	value = !!value;
609 	spin_lock_irqsave(hba->host->host_lock, flags);
610 	if (value == hba->monitor.enabled)
611 		goto out_unlock;
612 
613 	if (!value) {
614 		memset(&hba->monitor, 0, sizeof(hba->monitor));
615 	} else {
616 		hba->monitor.enabled = true;
617 		hba->monitor.enabled_ts = ktime_get();
618 	}
619 
620 out_unlock:
621 	spin_unlock_irqrestore(hba->host->host_lock, flags);
622 	return count;
623 }
624 
monitor_chunk_size_show(struct device * dev,struct device_attribute * attr,char * buf)625 static ssize_t monitor_chunk_size_show(struct device *dev,
626 				   struct device_attribute *attr, char *buf)
627 {
628 	struct ufs_hba *hba = dev_get_drvdata(dev);
629 
630 	return sysfs_emit(buf, "%lu\n", hba->monitor.chunk_size);
631 }
632 
monitor_chunk_size_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)633 static ssize_t monitor_chunk_size_store(struct device *dev,
634 				    struct device_attribute *attr,
635 				    const char *buf, size_t count)
636 {
637 	struct ufs_hba *hba = dev_get_drvdata(dev);
638 	unsigned long value, flags;
639 
640 	if (kstrtoul(buf, 0, &value))
641 		return -EINVAL;
642 
643 	spin_lock_irqsave(hba->host->host_lock, flags);
644 	/* Only allow chunk size change when monitor is disabled */
645 	if (!hba->monitor.enabled)
646 		hba->monitor.chunk_size = value;
647 	spin_unlock_irqrestore(hba->host->host_lock, flags);
648 	return count;
649 }
650 
read_total_sectors_show(struct device * dev,struct device_attribute * attr,char * buf)651 static ssize_t read_total_sectors_show(struct device *dev,
652 				       struct device_attribute *attr, char *buf)
653 {
654 	struct ufs_hba *hba = dev_get_drvdata(dev);
655 
656 	return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[READ]);
657 }
658 
read_total_busy_show(struct device * dev,struct device_attribute * attr,char * buf)659 static ssize_t read_total_busy_show(struct device *dev,
660 				    struct device_attribute *attr, char *buf)
661 {
662 	struct ufs_hba *hba = dev_get_drvdata(dev);
663 
664 	return sysfs_emit(buf, "%llu\n",
665 			  ktime_to_us(hba->monitor.total_busy[READ]));
666 }
667 
read_nr_requests_show(struct device * dev,struct device_attribute * attr,char * buf)668 static ssize_t read_nr_requests_show(struct device *dev,
669 				     struct device_attribute *attr, char *buf)
670 {
671 	struct ufs_hba *hba = dev_get_drvdata(dev);
672 
673 	return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[READ]);
674 }
675 
read_req_latency_avg_show(struct device * dev,struct device_attribute * attr,char * buf)676 static ssize_t read_req_latency_avg_show(struct device *dev,
677 					 struct device_attribute *attr,
678 					 char *buf)
679 {
680 	struct ufs_hba *hba = dev_get_drvdata(dev);
681 	struct ufs_hba_monitor *m = &hba->monitor;
682 
683 	if (!m->nr_req[READ])
684 		return sysfs_emit(buf, "0\n");
685 
686 	return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[READ]),
687 						 m->nr_req[READ]));
688 }
689 
read_req_latency_max_show(struct device * dev,struct device_attribute * attr,char * buf)690 static ssize_t read_req_latency_max_show(struct device *dev,
691 					 struct device_attribute *attr,
692 					 char *buf)
693 {
694 	struct ufs_hba *hba = dev_get_drvdata(dev);
695 
696 	return sysfs_emit(buf, "%llu\n",
697 			  ktime_to_us(hba->monitor.lat_max[READ]));
698 }
699 
read_req_latency_min_show(struct device * dev,struct device_attribute * attr,char * buf)700 static ssize_t read_req_latency_min_show(struct device *dev,
701 					 struct device_attribute *attr,
702 					 char *buf)
703 {
704 	struct ufs_hba *hba = dev_get_drvdata(dev);
705 
706 	return sysfs_emit(buf, "%llu\n",
707 			  ktime_to_us(hba->monitor.lat_min[READ]));
708 }
709 
read_req_latency_sum_show(struct device * dev,struct device_attribute * attr,char * buf)710 static ssize_t read_req_latency_sum_show(struct device *dev,
711 					 struct device_attribute *attr,
712 					 char *buf)
713 {
714 	struct ufs_hba *hba = dev_get_drvdata(dev);
715 
716 	return sysfs_emit(buf, "%llu\n",
717 			  ktime_to_us(hba->monitor.lat_sum[READ]));
718 }
719 
write_total_sectors_show(struct device * dev,struct device_attribute * attr,char * buf)720 static ssize_t write_total_sectors_show(struct device *dev,
721 					struct device_attribute *attr,
722 					char *buf)
723 {
724 	struct ufs_hba *hba = dev_get_drvdata(dev);
725 
726 	return sysfs_emit(buf, "%lu\n", hba->monitor.nr_sec_rw[WRITE]);
727 }
728 
write_total_busy_show(struct device * dev,struct device_attribute * attr,char * buf)729 static ssize_t write_total_busy_show(struct device *dev,
730 				     struct device_attribute *attr, char *buf)
731 {
732 	struct ufs_hba *hba = dev_get_drvdata(dev);
733 
734 	return sysfs_emit(buf, "%llu\n",
735 			  ktime_to_us(hba->monitor.total_busy[WRITE]));
736 }
737 
write_nr_requests_show(struct device * dev,struct device_attribute * attr,char * buf)738 static ssize_t write_nr_requests_show(struct device *dev,
739 				      struct device_attribute *attr, char *buf)
740 {
741 	struct ufs_hba *hba = dev_get_drvdata(dev);
742 
743 	return sysfs_emit(buf, "%lu\n", hba->monitor.nr_req[WRITE]);
744 }
745 
write_req_latency_avg_show(struct device * dev,struct device_attribute * attr,char * buf)746 static ssize_t write_req_latency_avg_show(struct device *dev,
747 					  struct device_attribute *attr,
748 					  char *buf)
749 {
750 	struct ufs_hba *hba = dev_get_drvdata(dev);
751 	struct ufs_hba_monitor *m = &hba->monitor;
752 
753 	if (!m->nr_req[WRITE])
754 		return sysfs_emit(buf, "0\n");
755 
756 	return sysfs_emit(buf, "%llu\n", div_u64(ktime_to_us(m->lat_sum[WRITE]),
757 						 m->nr_req[WRITE]));
758 }
759 
write_req_latency_max_show(struct device * dev,struct device_attribute * attr,char * buf)760 static ssize_t write_req_latency_max_show(struct device *dev,
761 					  struct device_attribute *attr,
762 					  char *buf)
763 {
764 	struct ufs_hba *hba = dev_get_drvdata(dev);
765 
766 	return sysfs_emit(buf, "%llu\n",
767 			  ktime_to_us(hba->monitor.lat_max[WRITE]));
768 }
769 
write_req_latency_min_show(struct device * dev,struct device_attribute * attr,char * buf)770 static ssize_t write_req_latency_min_show(struct device *dev,
771 					  struct device_attribute *attr,
772 					  char *buf)
773 {
774 	struct ufs_hba *hba = dev_get_drvdata(dev);
775 
776 	return sysfs_emit(buf, "%llu\n",
777 			  ktime_to_us(hba->monitor.lat_min[WRITE]));
778 }
779 
write_req_latency_sum_show(struct device * dev,struct device_attribute * attr,char * buf)780 static ssize_t write_req_latency_sum_show(struct device *dev,
781 					  struct device_attribute *attr,
782 					  char *buf)
783 {
784 	struct ufs_hba *hba = dev_get_drvdata(dev);
785 
786 	return sysfs_emit(buf, "%llu\n",
787 			  ktime_to_us(hba->monitor.lat_sum[WRITE]));
788 }
789 
790 static DEVICE_ATTR_RW(monitor_enable);
791 static DEVICE_ATTR_RW(monitor_chunk_size);
792 static DEVICE_ATTR_RO(read_total_sectors);
793 static DEVICE_ATTR_RO(read_total_busy);
794 static DEVICE_ATTR_RO(read_nr_requests);
795 static DEVICE_ATTR_RO(read_req_latency_avg);
796 static DEVICE_ATTR_RO(read_req_latency_max);
797 static DEVICE_ATTR_RO(read_req_latency_min);
798 static DEVICE_ATTR_RO(read_req_latency_sum);
799 static DEVICE_ATTR_RO(write_total_sectors);
800 static DEVICE_ATTR_RO(write_total_busy);
801 static DEVICE_ATTR_RO(write_nr_requests);
802 static DEVICE_ATTR_RO(write_req_latency_avg);
803 static DEVICE_ATTR_RO(write_req_latency_max);
804 static DEVICE_ATTR_RO(write_req_latency_min);
805 static DEVICE_ATTR_RO(write_req_latency_sum);
806 
807 static struct attribute *ufs_sysfs_monitor_attrs[] = {
808 	&dev_attr_monitor_enable.attr,
809 	&dev_attr_monitor_chunk_size.attr,
810 	&dev_attr_read_total_sectors.attr,
811 	&dev_attr_read_total_busy.attr,
812 	&dev_attr_read_nr_requests.attr,
813 	&dev_attr_read_req_latency_avg.attr,
814 	&dev_attr_read_req_latency_max.attr,
815 	&dev_attr_read_req_latency_min.attr,
816 	&dev_attr_read_req_latency_sum.attr,
817 	&dev_attr_write_total_sectors.attr,
818 	&dev_attr_write_total_busy.attr,
819 	&dev_attr_write_nr_requests.attr,
820 	&dev_attr_write_req_latency_avg.attr,
821 	&dev_attr_write_req_latency_max.attr,
822 	&dev_attr_write_req_latency_min.attr,
823 	&dev_attr_write_req_latency_sum.attr,
824 	NULL
825 };
826 
827 static const struct attribute_group ufs_sysfs_monitor_group = {
828 	.name = "monitor",
829 	.attrs = ufs_sysfs_monitor_attrs,
830 };
831 
lane_show(struct device * dev,struct device_attribute * attr,char * buf)832 static ssize_t lane_show(struct device *dev, struct device_attribute *attr,
833 			 char *buf)
834 {
835 	struct ufs_hba *hba = dev_get_drvdata(dev);
836 
837 	return sysfs_emit(buf, "%u\n", hba->pwr_info.lane_rx);
838 }
839 
mode_show(struct device * dev,struct device_attribute * attr,char * buf)840 static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
841 			 char *buf)
842 {
843 	struct ufs_hba *hba = dev_get_drvdata(dev);
844 
845 	return sysfs_emit(buf, "%s\n", ufs_pa_pwr_mode_to_string(hba->pwr_info.pwr_rx));
846 }
847 
rate_show(struct device * dev,struct device_attribute * attr,char * buf)848 static ssize_t rate_show(struct device *dev, struct device_attribute *attr,
849 			 char *buf)
850 {
851 	struct ufs_hba *hba = dev_get_drvdata(dev);
852 
853 	return sysfs_emit(buf, "%s\n", ufs_hs_gear_rate_to_string(hba->pwr_info.hs_rate));
854 }
855 
gear_show(struct device * dev,struct device_attribute * attr,char * buf)856 static ssize_t gear_show(struct device *dev, struct device_attribute *attr,
857 			 char *buf)
858 {
859 	struct ufs_hba *hba = dev_get_drvdata(dev);
860 
861 	return sysfs_emit(buf, "%s\n", hba->pwr_info.hs_rate ?
862 			  ufs_hs_gear_to_string(hba->pwr_info.gear_rx) :
863 			  ufs_pwm_gear_to_string(hba->pwr_info.gear_rx));
864 }
865 
dev_pm_show(struct device * dev,struct device_attribute * attr,char * buf)866 static ssize_t dev_pm_show(struct device *dev, struct device_attribute *attr,
867 			   char *buf)
868 {
869 	struct ufs_hba *hba = dev_get_drvdata(dev);
870 
871 	return sysfs_emit(buf, "%s\n", ufshcd_ufs_dev_pwr_mode_to_string(hba->curr_dev_pwr_mode));
872 }
873 
link_state_show(struct device * dev,struct device_attribute * attr,char * buf)874 static ssize_t link_state_show(struct device *dev,
875 			       struct device_attribute *attr, char *buf)
876 {
877 	struct ufs_hba *hba = dev_get_drvdata(dev);
878 
879 	return sysfs_emit(buf, "%s\n", ufshcd_uic_link_state_to_string(hba->uic_link_state));
880 }
881 
882 static DEVICE_ATTR_RO(lane);
883 static DEVICE_ATTR_RO(mode);
884 static DEVICE_ATTR_RO(rate);
885 static DEVICE_ATTR_RO(gear);
886 static DEVICE_ATTR_RO(dev_pm);
887 static DEVICE_ATTR_RO(link_state);
888 
889 static struct attribute *ufs_power_info_attrs[] = {
890 	&dev_attr_lane.attr,
891 	&dev_attr_mode.attr,
892 	&dev_attr_rate.attr,
893 	&dev_attr_gear.attr,
894 	&dev_attr_dev_pm.attr,
895 	&dev_attr_link_state.attr,
896 	NULL
897 };
898 
899 static const struct attribute_group ufs_sysfs_power_info_group = {
900 	.name = "power_info",
901 	.attrs = ufs_power_info_attrs,
902 };
903 
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)904 static ssize_t ufs_sysfs_read_desc_param(struct ufs_hba *hba,
905 				  enum desc_idn desc_id,
906 				  u8 desc_index,
907 				  u8 param_offset,
908 				  u8 *sysfs_buf,
909 				  u8 param_size)
910 {
911 	u8 desc_buf[8] = {0};
912 	int ret;
913 
914 	if (param_size > 8)
915 		return -EINVAL;
916 
917 	down(&hba->host_sem);
918 	if (!ufshcd_is_user_access_allowed(hba)) {
919 		ret = -EBUSY;
920 		goto out;
921 	}
922 
923 	ufshcd_rpm_get_sync(hba);
924 	ret = ufshcd_read_desc_param(hba, desc_id, desc_index,
925 				param_offset, desc_buf, param_size);
926 	ufshcd_rpm_put_sync(hba);
927 	if (ret) {
928 		ret = -EINVAL;
929 		goto out;
930 	}
931 
932 	switch (param_size) {
933 	case 1:
934 		ret = sysfs_emit(sysfs_buf, "0x%02X\n", *desc_buf);
935 		break;
936 	case 2:
937 		ret = sysfs_emit(sysfs_buf, "0x%04X\n",
938 			get_unaligned_be16(desc_buf));
939 		break;
940 	case 4:
941 		ret = sysfs_emit(sysfs_buf, "0x%08X\n",
942 			get_unaligned_be32(desc_buf));
943 		break;
944 	case 8:
945 		ret = sysfs_emit(sysfs_buf, "0x%016llX\n",
946 			get_unaligned_be64(desc_buf));
947 		break;
948 	}
949 
950 out:
951 	up(&hba->host_sem);
952 	return ret;
953 }
954 
955 #define UFS_DESC_PARAM(_name, _puname, _duname, _size)			\
956 static ssize_t _name##_show(struct device *dev,				\
957 	struct device_attribute *attr, char *buf)			\
958 {									\
959 	struct ufs_hba *hba = dev_get_drvdata(dev);			\
960 	return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname,	\
961 		0, _duname##_DESC_PARAM##_puname, buf, _size);		\
962 }									\
963 static DEVICE_ATTR_RO(_name)
964 
965 #define UFS_DEVICE_DESC_PARAM(_name, _uname, _size)			\
966 	UFS_DESC_PARAM(_name, _uname, DEVICE, _size)
967 
968 UFS_DEVICE_DESC_PARAM(device_type, _DEVICE_TYPE, 1);
969 UFS_DEVICE_DESC_PARAM(device_class, _DEVICE_CLASS, 1);
970 UFS_DEVICE_DESC_PARAM(device_sub_class, _DEVICE_SUB_CLASS, 1);
971 UFS_DEVICE_DESC_PARAM(protocol, _PRTCL, 1);
972 UFS_DEVICE_DESC_PARAM(number_of_luns, _NUM_LU, 1);
973 UFS_DEVICE_DESC_PARAM(number_of_wluns, _NUM_WLU, 1);
974 UFS_DEVICE_DESC_PARAM(boot_enable, _BOOT_ENBL, 1);
975 UFS_DEVICE_DESC_PARAM(descriptor_access_enable, _DESC_ACCSS_ENBL, 1);
976 UFS_DEVICE_DESC_PARAM(initial_power_mode, _INIT_PWR_MODE, 1);
977 UFS_DEVICE_DESC_PARAM(high_priority_lun, _HIGH_PR_LUN, 1);
978 UFS_DEVICE_DESC_PARAM(secure_removal_type, _SEC_RMV_TYPE, 1);
979 UFS_DEVICE_DESC_PARAM(support_security_lun, _SEC_LU, 1);
980 UFS_DEVICE_DESC_PARAM(bkops_termination_latency, _BKOP_TERM_LT, 1);
981 UFS_DEVICE_DESC_PARAM(initial_active_icc_level, _ACTVE_ICC_LVL, 1);
982 UFS_DEVICE_DESC_PARAM(specification_version, _SPEC_VER, 2);
983 UFS_DEVICE_DESC_PARAM(manufacturing_date, _MANF_DATE, 2);
984 UFS_DEVICE_DESC_PARAM(manufacturer_id, _MANF_ID, 2);
985 UFS_DEVICE_DESC_PARAM(rtt_capability, _RTT_CAP, 1);
986 UFS_DEVICE_DESC_PARAM(rtc_update, _FRQ_RTC, 2);
987 UFS_DEVICE_DESC_PARAM(ufs_features, _UFS_FEAT, 1);
988 UFS_DEVICE_DESC_PARAM(ffu_timeout, _FFU_TMT, 1);
989 UFS_DEVICE_DESC_PARAM(queue_depth, _Q_DPTH, 1);
990 UFS_DEVICE_DESC_PARAM(device_version, _DEV_VER, 2);
991 UFS_DEVICE_DESC_PARAM(number_of_secure_wpa, _NUM_SEC_WPA, 1);
992 UFS_DEVICE_DESC_PARAM(psa_max_data_size, _PSA_MAX_DATA, 4);
993 UFS_DEVICE_DESC_PARAM(psa_state_timeout, _PSA_TMT, 1);
994 UFS_DEVICE_DESC_PARAM(ext_feature_sup, _EXT_UFS_FEATURE_SUP, 4);
995 UFS_DEVICE_DESC_PARAM(wb_presv_us_en, _WB_PRESRV_USRSPC_EN, 1);
996 UFS_DEVICE_DESC_PARAM(wb_type, _WB_TYPE, 1);
997 UFS_DEVICE_DESC_PARAM(wb_shared_alloc_units, _WB_SHARED_ALLOC_UNITS, 4);
998 
999 static struct attribute *ufs_sysfs_device_descriptor[] = {
1000 	&dev_attr_device_type.attr,
1001 	&dev_attr_device_class.attr,
1002 	&dev_attr_device_sub_class.attr,
1003 	&dev_attr_protocol.attr,
1004 	&dev_attr_number_of_luns.attr,
1005 	&dev_attr_number_of_wluns.attr,
1006 	&dev_attr_boot_enable.attr,
1007 	&dev_attr_descriptor_access_enable.attr,
1008 	&dev_attr_initial_power_mode.attr,
1009 	&dev_attr_high_priority_lun.attr,
1010 	&dev_attr_secure_removal_type.attr,
1011 	&dev_attr_support_security_lun.attr,
1012 	&dev_attr_bkops_termination_latency.attr,
1013 	&dev_attr_initial_active_icc_level.attr,
1014 	&dev_attr_specification_version.attr,
1015 	&dev_attr_manufacturing_date.attr,
1016 	&dev_attr_manufacturer_id.attr,
1017 	&dev_attr_rtt_capability.attr,
1018 	&dev_attr_rtc_update.attr,
1019 	&dev_attr_ufs_features.attr,
1020 	&dev_attr_ffu_timeout.attr,
1021 	&dev_attr_queue_depth.attr,
1022 	&dev_attr_device_version.attr,
1023 	&dev_attr_number_of_secure_wpa.attr,
1024 	&dev_attr_psa_max_data_size.attr,
1025 	&dev_attr_psa_state_timeout.attr,
1026 	&dev_attr_ext_feature_sup.attr,
1027 	&dev_attr_wb_presv_us_en.attr,
1028 	&dev_attr_wb_type.attr,
1029 	&dev_attr_wb_shared_alloc_units.attr,
1030 	NULL,
1031 };
1032 
1033 static const struct attribute_group ufs_sysfs_device_descriptor_group = {
1034 	.name = "device_descriptor",
1035 	.attrs = ufs_sysfs_device_descriptor,
1036 };
1037 
1038 #define UFS_INTERCONNECT_DESC_PARAM(_name, _uname, _size)		\
1039 	UFS_DESC_PARAM(_name, _uname, INTERCONNECT, _size)
1040 
1041 UFS_INTERCONNECT_DESC_PARAM(unipro_version, _UNIPRO_VER, 2);
1042 UFS_INTERCONNECT_DESC_PARAM(mphy_version, _MPHY_VER, 2);
1043 
1044 static struct attribute *ufs_sysfs_interconnect_descriptor[] = {
1045 	&dev_attr_unipro_version.attr,
1046 	&dev_attr_mphy_version.attr,
1047 	NULL,
1048 };
1049 
1050 static const struct attribute_group ufs_sysfs_interconnect_descriptor_group = {
1051 	.name = "interconnect_descriptor",
1052 	.attrs = ufs_sysfs_interconnect_descriptor,
1053 };
1054 
1055 #define UFS_GEOMETRY_DESC_PARAM(_name, _uname, _size)			\
1056 	UFS_DESC_PARAM(_name, _uname, GEOMETRY, _size)
1057 
1058 UFS_GEOMETRY_DESC_PARAM(raw_device_capacity, _DEV_CAP, 8);
1059 UFS_GEOMETRY_DESC_PARAM(max_number_of_luns, _MAX_NUM_LUN, 1);
1060 UFS_GEOMETRY_DESC_PARAM(segment_size, _SEG_SIZE, 4);
1061 UFS_GEOMETRY_DESC_PARAM(allocation_unit_size, _ALLOC_UNIT_SIZE, 1);
1062 UFS_GEOMETRY_DESC_PARAM(min_addressable_block_size, _MIN_BLK_SIZE, 1);
1063 UFS_GEOMETRY_DESC_PARAM(optimal_read_block_size, _OPT_RD_BLK_SIZE, 1);
1064 UFS_GEOMETRY_DESC_PARAM(optimal_write_block_size, _OPT_WR_BLK_SIZE, 1);
1065 UFS_GEOMETRY_DESC_PARAM(max_in_buffer_size, _MAX_IN_BUF_SIZE, 1);
1066 UFS_GEOMETRY_DESC_PARAM(max_out_buffer_size, _MAX_OUT_BUF_SIZE, 1);
1067 UFS_GEOMETRY_DESC_PARAM(rpmb_rw_size, _RPMB_RW_SIZE, 1);
1068 UFS_GEOMETRY_DESC_PARAM(dyn_capacity_resource_policy, _DYN_CAP_RSRC_PLC, 1);
1069 UFS_GEOMETRY_DESC_PARAM(data_ordering, _DATA_ORDER, 1);
1070 UFS_GEOMETRY_DESC_PARAM(max_number_of_contexts, _MAX_NUM_CTX, 1);
1071 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_unit_size, _TAG_UNIT_SIZE, 1);
1072 UFS_GEOMETRY_DESC_PARAM(sys_data_tag_resource_size, _TAG_RSRC_SIZE, 1);
1073 UFS_GEOMETRY_DESC_PARAM(secure_removal_types, _SEC_RM_TYPES, 1);
1074 UFS_GEOMETRY_DESC_PARAM(memory_types, _MEM_TYPES, 2);
1075 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_max_alloc_units,
1076 	_SCM_MAX_NUM_UNITS, 4);
1077 UFS_GEOMETRY_DESC_PARAM(sys_code_memory_capacity_adjustment_factor,
1078 	_SCM_CAP_ADJ_FCTR, 2);
1079 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_max_alloc_units,
1080 	_NPM_MAX_NUM_UNITS, 4);
1081 UFS_GEOMETRY_DESC_PARAM(non_persist_memory_capacity_adjustment_factor,
1082 	_NPM_CAP_ADJ_FCTR, 2);
1083 UFS_GEOMETRY_DESC_PARAM(enh1_memory_max_alloc_units,
1084 	_ENM1_MAX_NUM_UNITS, 4);
1085 UFS_GEOMETRY_DESC_PARAM(enh1_memory_capacity_adjustment_factor,
1086 	_ENM1_CAP_ADJ_FCTR, 2);
1087 UFS_GEOMETRY_DESC_PARAM(enh2_memory_max_alloc_units,
1088 	_ENM2_MAX_NUM_UNITS, 4);
1089 UFS_GEOMETRY_DESC_PARAM(enh2_memory_capacity_adjustment_factor,
1090 	_ENM2_CAP_ADJ_FCTR, 2);
1091 UFS_GEOMETRY_DESC_PARAM(enh3_memory_max_alloc_units,
1092 	_ENM3_MAX_NUM_UNITS, 4);
1093 UFS_GEOMETRY_DESC_PARAM(enh3_memory_capacity_adjustment_factor,
1094 	_ENM3_CAP_ADJ_FCTR, 2);
1095 UFS_GEOMETRY_DESC_PARAM(enh4_memory_max_alloc_units,
1096 	_ENM4_MAX_NUM_UNITS, 4);
1097 UFS_GEOMETRY_DESC_PARAM(enh4_memory_capacity_adjustment_factor,
1098 	_ENM4_CAP_ADJ_FCTR, 2);
1099 UFS_GEOMETRY_DESC_PARAM(wb_max_alloc_units, _WB_MAX_ALLOC_UNITS, 4);
1100 UFS_GEOMETRY_DESC_PARAM(wb_max_wb_luns, _WB_MAX_WB_LUNS, 1);
1101 UFS_GEOMETRY_DESC_PARAM(wb_buff_cap_adj, _WB_BUFF_CAP_ADJ, 1);
1102 UFS_GEOMETRY_DESC_PARAM(wb_sup_red_type, _WB_SUP_RED_TYPE, 1);
1103 UFS_GEOMETRY_DESC_PARAM(wb_sup_wb_type, _WB_SUP_WB_TYPE, 1);
1104 
1105 
1106 static struct attribute *ufs_sysfs_geometry_descriptor[] = {
1107 	&dev_attr_raw_device_capacity.attr,
1108 	&dev_attr_max_number_of_luns.attr,
1109 	&dev_attr_segment_size.attr,
1110 	&dev_attr_allocation_unit_size.attr,
1111 	&dev_attr_min_addressable_block_size.attr,
1112 	&dev_attr_optimal_read_block_size.attr,
1113 	&dev_attr_optimal_write_block_size.attr,
1114 	&dev_attr_max_in_buffer_size.attr,
1115 	&dev_attr_max_out_buffer_size.attr,
1116 	&dev_attr_rpmb_rw_size.attr,
1117 	&dev_attr_dyn_capacity_resource_policy.attr,
1118 	&dev_attr_data_ordering.attr,
1119 	&dev_attr_max_number_of_contexts.attr,
1120 	&dev_attr_sys_data_tag_unit_size.attr,
1121 	&dev_attr_sys_data_tag_resource_size.attr,
1122 	&dev_attr_secure_removal_types.attr,
1123 	&dev_attr_memory_types.attr,
1124 	&dev_attr_sys_code_memory_max_alloc_units.attr,
1125 	&dev_attr_sys_code_memory_capacity_adjustment_factor.attr,
1126 	&dev_attr_non_persist_memory_max_alloc_units.attr,
1127 	&dev_attr_non_persist_memory_capacity_adjustment_factor.attr,
1128 	&dev_attr_enh1_memory_max_alloc_units.attr,
1129 	&dev_attr_enh1_memory_capacity_adjustment_factor.attr,
1130 	&dev_attr_enh2_memory_max_alloc_units.attr,
1131 	&dev_attr_enh2_memory_capacity_adjustment_factor.attr,
1132 	&dev_attr_enh3_memory_max_alloc_units.attr,
1133 	&dev_attr_enh3_memory_capacity_adjustment_factor.attr,
1134 	&dev_attr_enh4_memory_max_alloc_units.attr,
1135 	&dev_attr_enh4_memory_capacity_adjustment_factor.attr,
1136 	&dev_attr_wb_max_alloc_units.attr,
1137 	&dev_attr_wb_max_wb_luns.attr,
1138 	&dev_attr_wb_buff_cap_adj.attr,
1139 	&dev_attr_wb_sup_red_type.attr,
1140 	&dev_attr_wb_sup_wb_type.attr,
1141 	NULL,
1142 };
1143 
1144 static const struct attribute_group ufs_sysfs_geometry_descriptor_group = {
1145 	.name = "geometry_descriptor",
1146 	.attrs = ufs_sysfs_geometry_descriptor,
1147 };
1148 
1149 #define UFS_HEALTH_DESC_PARAM(_name, _uname, _size)			\
1150 	UFS_DESC_PARAM(_name, _uname, HEALTH, _size)
1151 
1152 UFS_HEALTH_DESC_PARAM(eol_info, _EOL_INFO, 1);
1153 UFS_HEALTH_DESC_PARAM(life_time_estimation_a, _LIFE_TIME_EST_A, 1);
1154 UFS_HEALTH_DESC_PARAM(life_time_estimation_b, _LIFE_TIME_EST_B, 1);
1155 
1156 static struct attribute *ufs_sysfs_health_descriptor[] = {
1157 	&dev_attr_eol_info.attr,
1158 	&dev_attr_life_time_estimation_a.attr,
1159 	&dev_attr_life_time_estimation_b.attr,
1160 	NULL,
1161 };
1162 
1163 static const struct attribute_group ufs_sysfs_health_descriptor_group = {
1164 	.name = "health_descriptor",
1165 	.attrs = ufs_sysfs_health_descriptor,
1166 };
1167 
1168 #define UFS_POWER_DESC_PARAM(_name, _uname, _index)			\
1169 static ssize_t _name##_index##_show(struct device *dev,			\
1170 	struct device_attribute *attr, char *buf)			\
1171 {									\
1172 	struct ufs_hba *hba = dev_get_drvdata(dev);			\
1173 	return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_POWER, 0,	\
1174 		PWR_DESC##_uname##_0 + _index * 2, buf, 2);		\
1175 }									\
1176 static DEVICE_ATTR_RO(_name##_index)
1177 
1178 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 0);
1179 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 1);
1180 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 2);
1181 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 3);
1182 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 4);
1183 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 5);
1184 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 6);
1185 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 7);
1186 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 8);
1187 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 9);
1188 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 10);
1189 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 11);
1190 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 12);
1191 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 13);
1192 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 14);
1193 UFS_POWER_DESC_PARAM(active_icc_levels_vcc, _ACTIVE_LVLS_VCC, 15);
1194 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 0);
1195 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 1);
1196 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 2);
1197 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 3);
1198 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 4);
1199 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 5);
1200 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 6);
1201 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 7);
1202 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 8);
1203 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 9);
1204 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 10);
1205 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 11);
1206 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 12);
1207 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 13);
1208 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 14);
1209 UFS_POWER_DESC_PARAM(active_icc_levels_vccq, _ACTIVE_LVLS_VCCQ, 15);
1210 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 0);
1211 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 1);
1212 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 2);
1213 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 3);
1214 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 4);
1215 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 5);
1216 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 6);
1217 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 7);
1218 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 8);
1219 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 9);
1220 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 10);
1221 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 11);
1222 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 12);
1223 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 13);
1224 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 14);
1225 UFS_POWER_DESC_PARAM(active_icc_levels_vccq2, _ACTIVE_LVLS_VCCQ2, 15);
1226 
1227 static struct attribute *ufs_sysfs_power_descriptor[] = {
1228 	&dev_attr_active_icc_levels_vcc0.attr,
1229 	&dev_attr_active_icc_levels_vcc1.attr,
1230 	&dev_attr_active_icc_levels_vcc2.attr,
1231 	&dev_attr_active_icc_levels_vcc3.attr,
1232 	&dev_attr_active_icc_levels_vcc4.attr,
1233 	&dev_attr_active_icc_levels_vcc5.attr,
1234 	&dev_attr_active_icc_levels_vcc6.attr,
1235 	&dev_attr_active_icc_levels_vcc7.attr,
1236 	&dev_attr_active_icc_levels_vcc8.attr,
1237 	&dev_attr_active_icc_levels_vcc9.attr,
1238 	&dev_attr_active_icc_levels_vcc10.attr,
1239 	&dev_attr_active_icc_levels_vcc11.attr,
1240 	&dev_attr_active_icc_levels_vcc12.attr,
1241 	&dev_attr_active_icc_levels_vcc13.attr,
1242 	&dev_attr_active_icc_levels_vcc14.attr,
1243 	&dev_attr_active_icc_levels_vcc15.attr,
1244 	&dev_attr_active_icc_levels_vccq0.attr,
1245 	&dev_attr_active_icc_levels_vccq1.attr,
1246 	&dev_attr_active_icc_levels_vccq2.attr,
1247 	&dev_attr_active_icc_levels_vccq3.attr,
1248 	&dev_attr_active_icc_levels_vccq4.attr,
1249 	&dev_attr_active_icc_levels_vccq5.attr,
1250 	&dev_attr_active_icc_levels_vccq6.attr,
1251 	&dev_attr_active_icc_levels_vccq7.attr,
1252 	&dev_attr_active_icc_levels_vccq8.attr,
1253 	&dev_attr_active_icc_levels_vccq9.attr,
1254 	&dev_attr_active_icc_levels_vccq10.attr,
1255 	&dev_attr_active_icc_levels_vccq11.attr,
1256 	&dev_attr_active_icc_levels_vccq12.attr,
1257 	&dev_attr_active_icc_levels_vccq13.attr,
1258 	&dev_attr_active_icc_levels_vccq14.attr,
1259 	&dev_attr_active_icc_levels_vccq15.attr,
1260 	&dev_attr_active_icc_levels_vccq20.attr,
1261 	&dev_attr_active_icc_levels_vccq21.attr,
1262 	&dev_attr_active_icc_levels_vccq22.attr,
1263 	&dev_attr_active_icc_levels_vccq23.attr,
1264 	&dev_attr_active_icc_levels_vccq24.attr,
1265 	&dev_attr_active_icc_levels_vccq25.attr,
1266 	&dev_attr_active_icc_levels_vccq26.attr,
1267 	&dev_attr_active_icc_levels_vccq27.attr,
1268 	&dev_attr_active_icc_levels_vccq28.attr,
1269 	&dev_attr_active_icc_levels_vccq29.attr,
1270 	&dev_attr_active_icc_levels_vccq210.attr,
1271 	&dev_attr_active_icc_levels_vccq211.attr,
1272 	&dev_attr_active_icc_levels_vccq212.attr,
1273 	&dev_attr_active_icc_levels_vccq213.attr,
1274 	&dev_attr_active_icc_levels_vccq214.attr,
1275 	&dev_attr_active_icc_levels_vccq215.attr,
1276 	NULL,
1277 };
1278 
1279 static const struct attribute_group ufs_sysfs_power_descriptor_group = {
1280 	.name = "power_descriptor",
1281 	.attrs = ufs_sysfs_power_descriptor,
1282 };
1283 
1284 #define UFS_STRING_DESCRIPTOR(_name, _pname)				\
1285 static ssize_t _name##_show(struct device *dev,				\
1286 	struct device_attribute *attr, char *buf)			\
1287 {									\
1288 	u8 index;							\
1289 	struct ufs_hba *hba = dev_get_drvdata(dev);			\
1290 	int ret;							\
1291 	int desc_len = QUERY_DESC_MAX_SIZE;				\
1292 	u8 *desc_buf;							\
1293 									\
1294 	down(&hba->host_sem);						\
1295 	if (!ufshcd_is_user_access_allowed(hba)) {			\
1296 		up(&hba->host_sem);					\
1297 		return -EBUSY;						\
1298 	}								\
1299 	desc_buf = kzalloc(QUERY_DESC_MAX_SIZE, GFP_ATOMIC);		\
1300 	if (!desc_buf) {						\
1301 		up(&hba->host_sem);					\
1302 		return -ENOMEM;						\
1303 	}								\
1304 	ufshcd_rpm_get_sync(hba);					\
1305 	ret = ufshcd_query_descriptor_retry(hba,			\
1306 		UPIU_QUERY_OPCODE_READ_DESC, QUERY_DESC_IDN_DEVICE,	\
1307 		0, 0, desc_buf, &desc_len);				\
1308 	if (ret) {							\
1309 		ret = -EINVAL;						\
1310 		goto out;						\
1311 	}								\
1312 	index = desc_buf[DEVICE_DESC_PARAM##_pname];			\
1313 	kfree(desc_buf);						\
1314 	desc_buf = NULL;						\
1315 	ret = ufshcd_read_string_desc(hba, index, &desc_buf,		\
1316 				      SD_ASCII_STD);			\
1317 	if (ret < 0)							\
1318 		goto out;						\
1319 	ret = sysfs_emit(buf, "%s\n", desc_buf);			\
1320 out:									\
1321 	ufshcd_rpm_put_sync(hba);					\
1322 	kfree(desc_buf);						\
1323 	up(&hba->host_sem);						\
1324 	return ret;							\
1325 }									\
1326 static DEVICE_ATTR_RO(_name)
1327 
1328 UFS_STRING_DESCRIPTOR(manufacturer_name, _MANF_NAME);
1329 UFS_STRING_DESCRIPTOR(product_name, _PRDCT_NAME);
1330 UFS_STRING_DESCRIPTOR(oem_id, _OEM_ID);
1331 UFS_STRING_DESCRIPTOR(serial_number, _SN);
1332 UFS_STRING_DESCRIPTOR(product_revision, _PRDCT_REV);
1333 
1334 static struct attribute *ufs_sysfs_string_descriptors[] = {
1335 	&dev_attr_manufacturer_name.attr,
1336 	&dev_attr_product_name.attr,
1337 	&dev_attr_oem_id.attr,
1338 	&dev_attr_serial_number.attr,
1339 	&dev_attr_product_revision.attr,
1340 	NULL,
1341 };
1342 
1343 static const struct attribute_group ufs_sysfs_string_descriptors_group = {
1344 	.name = "string_descriptors",
1345 	.attrs = ufs_sysfs_string_descriptors,
1346 };
1347 
ufshcd_is_wb_flags(enum flag_idn idn)1348 static inline bool ufshcd_is_wb_flags(enum flag_idn idn)
1349 {
1350 	return idn >= QUERY_FLAG_IDN_WB_EN &&
1351 		idn <= QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8;
1352 }
1353 
1354 #define UFS_FLAG(_name, _uname)						\
1355 static ssize_t _name##_show(struct device *dev,				\
1356 	struct device_attribute *attr, char *buf)			\
1357 {									\
1358 	bool flag;							\
1359 	u8 index = 0;							\
1360 	int ret;							\
1361 	struct ufs_hba *hba = dev_get_drvdata(dev);			\
1362 									\
1363 	down(&hba->host_sem);						\
1364 	if (!ufshcd_is_user_access_allowed(hba)) {			\
1365 		up(&hba->host_sem);					\
1366 		return -EBUSY;						\
1367 	}								\
1368 	if (ufshcd_is_wb_flags(QUERY_FLAG_IDN##_uname))			\
1369 		index = ufshcd_wb_get_query_index(hba);			\
1370 	ufshcd_rpm_get_sync(hba);					\
1371 	ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG,	\
1372 		QUERY_FLAG_IDN##_uname, index, &flag);			\
1373 	ufshcd_rpm_put_sync(hba);					\
1374 	if (ret) {							\
1375 		ret = -EINVAL;						\
1376 		goto out;						\
1377 	}								\
1378 	ret = sysfs_emit(buf, "%s\n", flag ? "true" : "false");		\
1379 out:									\
1380 	up(&hba->host_sem);						\
1381 	return ret;							\
1382 }									\
1383 static DEVICE_ATTR_RO(_name)
1384 
1385 UFS_FLAG(device_init, _FDEVICEINIT);
1386 UFS_FLAG(permanent_wpe, _PERMANENT_WPE);
1387 UFS_FLAG(power_on_wpe, _PWR_ON_WPE);
1388 UFS_FLAG(bkops_enable, _BKOPS_EN);
1389 UFS_FLAG(life_span_mode_enable, _LIFE_SPAN_MODE_ENABLE);
1390 UFS_FLAG(phy_resource_removal, _FPHYRESOURCEREMOVAL);
1391 UFS_FLAG(busy_rtc, _BUSY_RTC);
1392 UFS_FLAG(disable_fw_update, _PERMANENTLY_DISABLE_FW_UPDATE);
1393 UFS_FLAG(wb_enable, _WB_EN);
1394 UFS_FLAG(wb_flush_en, _WB_BUFF_FLUSH_EN);
1395 UFS_FLAG(wb_flush_during_h8, _WB_BUFF_FLUSH_DURING_HIBERN8);
1396 
1397 static struct attribute *ufs_sysfs_device_flags[] = {
1398 	&dev_attr_device_init.attr,
1399 	&dev_attr_permanent_wpe.attr,
1400 	&dev_attr_power_on_wpe.attr,
1401 	&dev_attr_bkops_enable.attr,
1402 	&dev_attr_life_span_mode_enable.attr,
1403 	&dev_attr_phy_resource_removal.attr,
1404 	&dev_attr_busy_rtc.attr,
1405 	&dev_attr_disable_fw_update.attr,
1406 	&dev_attr_wb_enable.attr,
1407 	&dev_attr_wb_flush_en.attr,
1408 	&dev_attr_wb_flush_during_h8.attr,
1409 	NULL,
1410 };
1411 
1412 static const struct attribute_group ufs_sysfs_flags_group = {
1413 	.name = "flags",
1414 	.attrs = ufs_sysfs_device_flags,
1415 };
1416 
max_number_of_rtt_show(struct device * dev,struct device_attribute * attr,char * buf)1417 static ssize_t max_number_of_rtt_show(struct device *dev,
1418 				      struct device_attribute *attr, char *buf)
1419 {
1420 	struct ufs_hba *hba = dev_get_drvdata(dev);
1421 	u32 rtt;
1422 	int ret;
1423 
1424 	down(&hba->host_sem);
1425 	if (!ufshcd_is_user_access_allowed(hba)) {
1426 		up(&hba->host_sem);
1427 		return -EBUSY;
1428 	}
1429 
1430 	ufshcd_rpm_get_sync(hba);
1431 	ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,
1432 		QUERY_ATTR_IDN_MAX_NUM_OF_RTT, 0, 0, &rtt);
1433 	ufshcd_rpm_put_sync(hba);
1434 
1435 	if (ret)
1436 		goto out;
1437 
1438 	ret = sysfs_emit(buf, "0x%08X\n", rtt);
1439 
1440 out:
1441 	up(&hba->host_sem);
1442 	return ret;
1443 }
1444 
max_number_of_rtt_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1445 static ssize_t max_number_of_rtt_store(struct device *dev,
1446 				       struct device_attribute *attr,
1447 				       const char *buf, size_t count)
1448 {
1449 	struct ufs_hba *hba = dev_get_drvdata(dev);
1450 	struct ufs_dev_info *dev_info = &hba->dev_info;
1451 	struct scsi_device *sdev;
1452 	unsigned int memflags;
1453 	unsigned int rtt;
1454 	int ret;
1455 
1456 	if (kstrtouint(buf, 0, &rtt))
1457 		return -EINVAL;
1458 
1459 	if (rtt > dev_info->rtt_cap) {
1460 		dev_err(dev, "rtt can be at most bDeviceRTTCap\n");
1461 		return -EINVAL;
1462 	}
1463 
1464 	down(&hba->host_sem);
1465 	if (!ufshcd_is_user_access_allowed(hba)) {
1466 		ret = -EBUSY;
1467 		goto out;
1468 	}
1469 
1470 	ufshcd_rpm_get_sync(hba);
1471 
1472 	memflags = memalloc_noio_save();
1473 	shost_for_each_device(sdev, hba->host)
1474 		blk_mq_freeze_queue_nomemsave(sdev->request_queue);
1475 
1476 	ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR,
1477 		QUERY_ATTR_IDN_MAX_NUM_OF_RTT, 0, 0, &rtt);
1478 
1479 	shost_for_each_device(sdev, hba->host)
1480 		blk_mq_unfreeze_queue_nomemrestore(sdev->request_queue);
1481 	memalloc_noio_restore(memflags);
1482 
1483 	ufshcd_rpm_put_sync(hba);
1484 
1485 out:
1486 	up(&hba->host_sem);
1487 	return ret < 0 ? ret : count;
1488 }
1489 
1490 static DEVICE_ATTR_RW(max_number_of_rtt);
1491 
ufshcd_is_wb_attrs(enum attr_idn idn)1492 static inline bool ufshcd_is_wb_attrs(enum attr_idn idn)
1493 {
1494 	return idn >= QUERY_ATTR_IDN_WB_FLUSH_STATUS &&
1495 		idn <= QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE;
1496 }
1497 
1498 #define UFS_ATTRIBUTE(_name, _uname)					\
1499 static ssize_t _name##_show(struct device *dev,				\
1500 	struct device_attribute *attr, char *buf)			\
1501 {									\
1502 	struct ufs_hba *hba = dev_get_drvdata(dev);			\
1503 	u32 value;							\
1504 	int ret;							\
1505 	u8 index = 0;							\
1506 									\
1507 	down(&hba->host_sem);						\
1508 	if (!ufshcd_is_user_access_allowed(hba)) {			\
1509 		up(&hba->host_sem);					\
1510 		return -EBUSY;						\
1511 	}								\
1512 	if (ufshcd_is_wb_attrs(QUERY_ATTR_IDN##_uname))			\
1513 		index = ufshcd_wb_get_query_index(hba);			\
1514 	ufshcd_rpm_get_sync(hba);					\
1515 	ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,	\
1516 		QUERY_ATTR_IDN##_uname, index, 0, &value);		\
1517 	ufshcd_rpm_put_sync(hba);					\
1518 	if (ret) {							\
1519 		ret = -EINVAL;						\
1520 		goto out;						\
1521 	}								\
1522 	ret = sysfs_emit(buf, "0x%08X\n", value);			\
1523 out:									\
1524 	up(&hba->host_sem);						\
1525 	return ret;							\
1526 }									\
1527 static DEVICE_ATTR_RO(_name)
1528 
1529 UFS_ATTRIBUTE(boot_lun_enabled, _BOOT_LU_EN);
1530 UFS_ATTRIBUTE(current_power_mode, _POWER_MODE);
1531 UFS_ATTRIBUTE(active_icc_level, _ACTIVE_ICC_LVL);
1532 UFS_ATTRIBUTE(ooo_data_enabled, _OOO_DATA_EN);
1533 UFS_ATTRIBUTE(bkops_status, _BKOPS_STATUS);
1534 UFS_ATTRIBUTE(purge_status, _PURGE_STATUS);
1535 UFS_ATTRIBUTE(max_data_in_size, _MAX_DATA_IN);
1536 UFS_ATTRIBUTE(max_data_out_size, _MAX_DATA_OUT);
1537 UFS_ATTRIBUTE(reference_clock_frequency, _REF_CLK_FREQ);
1538 UFS_ATTRIBUTE(configuration_descriptor_lock, _CONF_DESC_LOCK);
1539 UFS_ATTRIBUTE(exception_event_control, _EE_CONTROL);
1540 UFS_ATTRIBUTE(exception_event_status, _EE_STATUS);
1541 UFS_ATTRIBUTE(ffu_status, _FFU_STATUS);
1542 UFS_ATTRIBUTE(psa_state, _PSA_STATE);
1543 UFS_ATTRIBUTE(psa_data_size, _PSA_DATA_SIZE);
1544 UFS_ATTRIBUTE(wb_flush_status, _WB_FLUSH_STATUS);
1545 UFS_ATTRIBUTE(wb_avail_buf, _AVAIL_WB_BUFF_SIZE);
1546 UFS_ATTRIBUTE(wb_life_time_est, _WB_BUFF_LIFE_TIME_EST);
1547 UFS_ATTRIBUTE(wb_cur_buf, _CURR_WB_BUFF_SIZE);
1548 
1549 
1550 static struct attribute *ufs_sysfs_attributes[] = {
1551 	&dev_attr_boot_lun_enabled.attr,
1552 	&dev_attr_current_power_mode.attr,
1553 	&dev_attr_active_icc_level.attr,
1554 	&dev_attr_ooo_data_enabled.attr,
1555 	&dev_attr_bkops_status.attr,
1556 	&dev_attr_purge_status.attr,
1557 	&dev_attr_max_data_in_size.attr,
1558 	&dev_attr_max_data_out_size.attr,
1559 	&dev_attr_reference_clock_frequency.attr,
1560 	&dev_attr_configuration_descriptor_lock.attr,
1561 	&dev_attr_max_number_of_rtt.attr,
1562 	&dev_attr_exception_event_control.attr,
1563 	&dev_attr_exception_event_status.attr,
1564 	&dev_attr_ffu_status.attr,
1565 	&dev_attr_psa_state.attr,
1566 	&dev_attr_psa_data_size.attr,
1567 	&dev_attr_wb_flush_status.attr,
1568 	&dev_attr_wb_avail_buf.attr,
1569 	&dev_attr_wb_life_time_est.attr,
1570 	&dev_attr_wb_cur_buf.attr,
1571 	NULL,
1572 };
1573 
1574 static const struct attribute_group ufs_sysfs_attributes_group = {
1575 	.name = "attributes",
1576 	.attrs = ufs_sysfs_attributes,
1577 };
1578 
1579 static const struct attribute_group *ufs_sysfs_groups[] = {
1580 	&ufs_sysfs_default_group,
1581 	&ufs_sysfs_capabilities_group,
1582 	&ufs_sysfs_ufshci_group,
1583 	&ufs_sysfs_monitor_group,
1584 	&ufs_sysfs_power_info_group,
1585 	&ufs_sysfs_device_descriptor_group,
1586 	&ufs_sysfs_interconnect_descriptor_group,
1587 	&ufs_sysfs_geometry_descriptor_group,
1588 	&ufs_sysfs_health_descriptor_group,
1589 	&ufs_sysfs_power_descriptor_group,
1590 	&ufs_sysfs_string_descriptors_group,
1591 	&ufs_sysfs_flags_group,
1592 	&ufs_sysfs_attributes_group,
1593 	NULL,
1594 };
1595 
1596 #define UFS_LUN_DESC_PARAM(_pname, _puname, _duname, _size)		\
1597 static ssize_t _pname##_show(struct device *dev,			\
1598 	struct device_attribute *attr, char *buf)			\
1599 {									\
1600 	struct scsi_device *sdev = to_scsi_device(dev);			\
1601 	struct ufs_hba *hba = shost_priv(sdev->host);			\
1602 	u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);			\
1603 	if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun))		\
1604 		return -EINVAL;						\
1605 	return ufs_sysfs_read_desc_param(hba, QUERY_DESC_IDN_##_duname,	\
1606 		lun, _duname##_DESC_PARAM##_puname, buf, _size);	\
1607 }									\
1608 static DEVICE_ATTR_RO(_pname)
1609 
1610 #define UFS_UNIT_DESC_PARAM(_name, _uname, _size)			\
1611 	UFS_LUN_DESC_PARAM(_name, _uname, UNIT, _size)
1612 
1613 UFS_UNIT_DESC_PARAM(lu_enable, _LU_ENABLE, 1);
1614 UFS_UNIT_DESC_PARAM(boot_lun_id, _BOOT_LUN_ID, 1);
1615 UFS_UNIT_DESC_PARAM(lun_write_protect, _LU_WR_PROTECT, 1);
1616 UFS_UNIT_DESC_PARAM(lun_queue_depth, _LU_Q_DEPTH, 1);
1617 UFS_UNIT_DESC_PARAM(psa_sensitive, _PSA_SENSITIVE, 1);
1618 UFS_UNIT_DESC_PARAM(lun_memory_type, _MEM_TYPE, 1);
1619 UFS_UNIT_DESC_PARAM(data_reliability, _DATA_RELIABILITY, 1);
1620 UFS_UNIT_DESC_PARAM(logical_block_size, _LOGICAL_BLK_SIZE, 1);
1621 UFS_UNIT_DESC_PARAM(logical_block_count, _LOGICAL_BLK_COUNT, 8);
1622 UFS_UNIT_DESC_PARAM(erase_block_size, _ERASE_BLK_SIZE, 4);
1623 UFS_UNIT_DESC_PARAM(provisioning_type, _PROVISIONING_TYPE, 1);
1624 UFS_UNIT_DESC_PARAM(physical_memory_resourse_count, _PHY_MEM_RSRC_CNT, 8);
1625 UFS_UNIT_DESC_PARAM(context_capabilities, _CTX_CAPABILITIES, 2);
1626 UFS_UNIT_DESC_PARAM(large_unit_granularity, _LARGE_UNIT_SIZE_M1, 1);
1627 UFS_UNIT_DESC_PARAM(wb_buf_alloc_units, _WB_BUF_ALLOC_UNITS, 4);
1628 
1629 static struct attribute *ufs_sysfs_unit_descriptor[] = {
1630 	&dev_attr_lu_enable.attr,
1631 	&dev_attr_boot_lun_id.attr,
1632 	&dev_attr_lun_write_protect.attr,
1633 	&dev_attr_lun_queue_depth.attr,
1634 	&dev_attr_psa_sensitive.attr,
1635 	&dev_attr_lun_memory_type.attr,
1636 	&dev_attr_data_reliability.attr,
1637 	&dev_attr_logical_block_size.attr,
1638 	&dev_attr_logical_block_count.attr,
1639 	&dev_attr_erase_block_size.attr,
1640 	&dev_attr_provisioning_type.attr,
1641 	&dev_attr_physical_memory_resourse_count.attr,
1642 	&dev_attr_context_capabilities.attr,
1643 	&dev_attr_large_unit_granularity.attr,
1644 	&dev_attr_wb_buf_alloc_units.attr,
1645 	NULL,
1646 };
1647 
ufs_unit_descriptor_is_visible(struct kobject * kobj,struct attribute * attr,int n)1648 static umode_t ufs_unit_descriptor_is_visible(struct kobject *kobj, struct attribute *attr, int n)
1649 {
1650 	struct device *dev = container_of(kobj, struct device, kobj);
1651 	struct scsi_device *sdev = to_scsi_device(dev);
1652 	u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
1653 	umode_t mode = attr->mode;
1654 
1655 	if (lun == UFS_UPIU_BOOT_WLUN || lun == UFS_UPIU_UFS_DEVICE_WLUN)
1656 		/* Boot and device WLUN have no unit descriptors */
1657 		mode = 0;
1658 	if (lun == UFS_UPIU_RPMB_WLUN && attr == &dev_attr_wb_buf_alloc_units.attr)
1659 		mode = 0;
1660 
1661 	return mode;
1662 }
1663 
1664 
1665 const struct attribute_group ufs_sysfs_unit_descriptor_group = {
1666 	.name = "unit_descriptor",
1667 	.attrs = ufs_sysfs_unit_descriptor,
1668 	.is_visible = ufs_unit_descriptor_is_visible,
1669 };
1670 
dyn_cap_needed_attribute_show(struct device * dev,struct device_attribute * attr,char * buf)1671 static ssize_t dyn_cap_needed_attribute_show(struct device *dev,
1672 	struct device_attribute *attr, char *buf)
1673 {
1674 	u32 value;
1675 	struct scsi_device *sdev = to_scsi_device(dev);
1676 	struct ufs_hba *hba = shost_priv(sdev->host);
1677 	u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
1678 	int ret;
1679 
1680 	down(&hba->host_sem);
1681 	if (!ufshcd_is_user_access_allowed(hba)) {
1682 		ret = -EBUSY;
1683 		goto out;
1684 	}
1685 
1686 	ufshcd_rpm_get_sync(hba);
1687 	ret = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_READ_ATTR,
1688 		QUERY_ATTR_IDN_DYN_CAP_NEEDED, lun, 0, &value);
1689 	ufshcd_rpm_put_sync(hba);
1690 	if (ret) {
1691 		ret = -EINVAL;
1692 		goto out;
1693 	}
1694 
1695 	ret = sysfs_emit(buf, "0x%08X\n", value);
1696 
1697 out:
1698 	up(&hba->host_sem);
1699 	return ret;
1700 }
1701 static DEVICE_ATTR_RO(dyn_cap_needed_attribute);
1702 
1703 static struct attribute *ufs_sysfs_lun_attributes[] = {
1704 	&dev_attr_dyn_cap_needed_attribute.attr,
1705 	NULL,
1706 };
1707 
1708 const struct attribute_group ufs_sysfs_lun_attributes_group = {
1709 	.attrs = ufs_sysfs_lun_attributes,
1710 };
1711 
ufs_sysfs_add_nodes(struct device * dev)1712 void ufs_sysfs_add_nodes(struct device *dev)
1713 {
1714 	int ret;
1715 
1716 	ret = sysfs_create_groups(&dev->kobj, ufs_sysfs_groups);
1717 	if (ret)
1718 		dev_err(dev,
1719 			"%s: sysfs groups creation failed (err = %d)\n",
1720 			__func__, ret);
1721 }
1722 
ufs_sysfs_remove_nodes(struct device * dev)1723 void ufs_sysfs_remove_nodes(struct device *dev)
1724 {
1725 	sysfs_remove_groups(&dev->kobj, ufs_sysfs_groups);
1726 }
1727