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Linux 4.16.11
[linux/fpc-iii.git] / drivers / usb / dwc3 / debugfs.c
blob00e65530c81ece64799b8d178c072df03e7faf7f
1 // SPDX-License-Identifier: GPL-2.0
2 /**
3 * debugfs.c - DesignWare USB3 DRD Controller DebugFS file
4 *
5 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
6 *
7 * Authors: Felipe Balbi <balbi@ti.com>,
8 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 */
10
11 #include <linux/kernel.h>
12 #include <linux/slab.h>
13 #include <linux/ptrace.h>
14 #include <linux/types.h>
15 #include <linux/spinlock.h>
16 #include <linux/debugfs.h>
17 #include <linux/seq_file.h>
18 #include <linux/delay.h>
19 #include <linux/uaccess.h>
20
21 #include <linux/usb/ch9.h>
22
23 #include "core.h"
24 #include "gadget.h"
25 #include "io.h"
26 #include "debug.h"
27
28 #define dump_register(nm) \
29 { \
30 .name = __stringify(nm), \
31 .offset = DWC3_ ##nm, \
32 }
33
34 #define dump_ep_register_set(n) \
35 { \
36 .name = "DEPCMDPAR2("__stringify(n)")", \
37 .offset = DWC3_DEP_BASE(n) + \
38 DWC3_DEPCMDPAR2, \
39 }, \
40 { \
41 .name = "DEPCMDPAR1("__stringify(n)")", \
42 .offset = DWC3_DEP_BASE(n) + \
43 DWC3_DEPCMDPAR1, \
44 }, \
45 { \
46 .name = "DEPCMDPAR0("__stringify(n)")", \
47 .offset = DWC3_DEP_BASE(n) + \
48 DWC3_DEPCMDPAR0, \
49 }, \
50 { \
51 .name = "DEPCMD("__stringify(n)")", \
52 .offset = DWC3_DEP_BASE(n) + \
53 DWC3_DEPCMD, \
54 }
55
56
57 static const struct debugfs_reg32 dwc3_regs[] = {
58 dump_register(GSBUSCFG0),
59 dump_register(GSBUSCFG1),
60 dump_register(GTXTHRCFG),
61 dump_register(GRXTHRCFG),
62 dump_register(GCTL),
63 dump_register(GEVTEN),
64 dump_register(GSTS),
65 dump_register(GUCTL1),
66 dump_register(GSNPSID),
67 dump_register(GGPIO),
68 dump_register(GUID),
69 dump_register(GUCTL),
70 dump_register(GBUSERRADDR0),
71 dump_register(GBUSERRADDR1),
72 dump_register(GPRTBIMAP0),
73 dump_register(GPRTBIMAP1),
74 dump_register(GHWPARAMS0),
75 dump_register(GHWPARAMS1),
76 dump_register(GHWPARAMS2),
77 dump_register(GHWPARAMS3),
78 dump_register(GHWPARAMS4),
79 dump_register(GHWPARAMS5),
80 dump_register(GHWPARAMS6),
81 dump_register(GHWPARAMS7),
82 dump_register(GDBGFIFOSPACE),
83 dump_register(GDBGLTSSM),
84 dump_register(GPRTBIMAP_HS0),
85 dump_register(GPRTBIMAP_HS1),
86 dump_register(GPRTBIMAP_FS0),
87 dump_register(GPRTBIMAP_FS1),
88
89 dump_register(GUSB2PHYCFG(0)),
90 dump_register(GUSB2PHYCFG(1)),
91 dump_register(GUSB2PHYCFG(2)),
92 dump_register(GUSB2PHYCFG(3)),
93 dump_register(GUSB2PHYCFG(4)),
94 dump_register(GUSB2PHYCFG(5)),
95 dump_register(GUSB2PHYCFG(6)),
96 dump_register(GUSB2PHYCFG(7)),
97 dump_register(GUSB2PHYCFG(8)),
98 dump_register(GUSB2PHYCFG(9)),
99 dump_register(GUSB2PHYCFG(10)),
100 dump_register(GUSB2PHYCFG(11)),
101 dump_register(GUSB2PHYCFG(12)),
102 dump_register(GUSB2PHYCFG(13)),
103 dump_register(GUSB2PHYCFG(14)),
104 dump_register(GUSB2PHYCFG(15)),
105
106 dump_register(GUSB2I2CCTL(0)),
107 dump_register(GUSB2I2CCTL(1)),
108 dump_register(GUSB2I2CCTL(2)),
109 dump_register(GUSB2I2CCTL(3)),
110 dump_register(GUSB2I2CCTL(4)),
111 dump_register(GUSB2I2CCTL(5)),
112 dump_register(GUSB2I2CCTL(6)),
113 dump_register(GUSB2I2CCTL(7)),
114 dump_register(GUSB2I2CCTL(8)),
115 dump_register(GUSB2I2CCTL(9)),
116 dump_register(GUSB2I2CCTL(10)),
117 dump_register(GUSB2I2CCTL(11)),
118 dump_register(GUSB2I2CCTL(12)),
119 dump_register(GUSB2I2CCTL(13)),
120 dump_register(GUSB2I2CCTL(14)),
121 dump_register(GUSB2I2CCTL(15)),
122
123 dump_register(GUSB2PHYACC(0)),
124 dump_register(GUSB2PHYACC(1)),
125 dump_register(GUSB2PHYACC(2)),
126 dump_register(GUSB2PHYACC(3)),
127 dump_register(GUSB2PHYACC(4)),
128 dump_register(GUSB2PHYACC(5)),
129 dump_register(GUSB2PHYACC(6)),
130 dump_register(GUSB2PHYACC(7)),
131 dump_register(GUSB2PHYACC(8)),
132 dump_register(GUSB2PHYACC(9)),
133 dump_register(GUSB2PHYACC(10)),
134 dump_register(GUSB2PHYACC(11)),
135 dump_register(GUSB2PHYACC(12)),
136 dump_register(GUSB2PHYACC(13)),
137 dump_register(GUSB2PHYACC(14)),
138 dump_register(GUSB2PHYACC(15)),
139
140 dump_register(GUSB3PIPECTL(0)),
141 dump_register(GUSB3PIPECTL(1)),
142 dump_register(GUSB3PIPECTL(2)),
143 dump_register(GUSB3PIPECTL(3)),
144 dump_register(GUSB3PIPECTL(4)),
145 dump_register(GUSB3PIPECTL(5)),
146 dump_register(GUSB3PIPECTL(6)),
147 dump_register(GUSB3PIPECTL(7)),
148 dump_register(GUSB3PIPECTL(8)),
149 dump_register(GUSB3PIPECTL(9)),
150 dump_register(GUSB3PIPECTL(10)),
151 dump_register(GUSB3PIPECTL(11)),
152 dump_register(GUSB3PIPECTL(12)),
153 dump_register(GUSB3PIPECTL(13)),
154 dump_register(GUSB3PIPECTL(14)),
155 dump_register(GUSB3PIPECTL(15)),
156
157 dump_register(GTXFIFOSIZ(0)),
158 dump_register(GTXFIFOSIZ(1)),
159 dump_register(GTXFIFOSIZ(2)),
160 dump_register(GTXFIFOSIZ(3)),
161 dump_register(GTXFIFOSIZ(4)),
162 dump_register(GTXFIFOSIZ(5)),
163 dump_register(GTXFIFOSIZ(6)),
164 dump_register(GTXFIFOSIZ(7)),
165 dump_register(GTXFIFOSIZ(8)),
166 dump_register(GTXFIFOSIZ(9)),
167 dump_register(GTXFIFOSIZ(10)),
168 dump_register(GTXFIFOSIZ(11)),
169 dump_register(GTXFIFOSIZ(12)),
170 dump_register(GTXFIFOSIZ(13)),
171 dump_register(GTXFIFOSIZ(14)),
172 dump_register(GTXFIFOSIZ(15)),
173 dump_register(GTXFIFOSIZ(16)),
174 dump_register(GTXFIFOSIZ(17)),
175 dump_register(GTXFIFOSIZ(18)),
176 dump_register(GTXFIFOSIZ(19)),
177 dump_register(GTXFIFOSIZ(20)),
178 dump_register(GTXFIFOSIZ(21)),
179 dump_register(GTXFIFOSIZ(22)),
180 dump_register(GTXFIFOSIZ(23)),
181 dump_register(GTXFIFOSIZ(24)),
182 dump_register(GTXFIFOSIZ(25)),
183 dump_register(GTXFIFOSIZ(26)),
184 dump_register(GTXFIFOSIZ(27)),
185 dump_register(GTXFIFOSIZ(28)),
186 dump_register(GTXFIFOSIZ(29)),
187 dump_register(GTXFIFOSIZ(30)),
188 dump_register(GTXFIFOSIZ(31)),
189
190 dump_register(GRXFIFOSIZ(0)),
191 dump_register(GRXFIFOSIZ(1)),
192 dump_register(GRXFIFOSIZ(2)),
193 dump_register(GRXFIFOSIZ(3)),
194 dump_register(GRXFIFOSIZ(4)),
195 dump_register(GRXFIFOSIZ(5)),
196 dump_register(GRXFIFOSIZ(6)),
197 dump_register(GRXFIFOSIZ(7)),
198 dump_register(GRXFIFOSIZ(8)),
199 dump_register(GRXFIFOSIZ(9)),
200 dump_register(GRXFIFOSIZ(10)),
201 dump_register(GRXFIFOSIZ(11)),
202 dump_register(GRXFIFOSIZ(12)),
203 dump_register(GRXFIFOSIZ(13)),
204 dump_register(GRXFIFOSIZ(14)),
205 dump_register(GRXFIFOSIZ(15)),
206 dump_register(GRXFIFOSIZ(16)),
207 dump_register(GRXFIFOSIZ(17)),
208 dump_register(GRXFIFOSIZ(18)),
209 dump_register(GRXFIFOSIZ(19)),
210 dump_register(GRXFIFOSIZ(20)),
211 dump_register(GRXFIFOSIZ(21)),
212 dump_register(GRXFIFOSIZ(22)),
213 dump_register(GRXFIFOSIZ(23)),
214 dump_register(GRXFIFOSIZ(24)),
215 dump_register(GRXFIFOSIZ(25)),
216 dump_register(GRXFIFOSIZ(26)),
217 dump_register(GRXFIFOSIZ(27)),
218 dump_register(GRXFIFOSIZ(28)),
219 dump_register(GRXFIFOSIZ(29)),
220 dump_register(GRXFIFOSIZ(30)),
221 dump_register(GRXFIFOSIZ(31)),
222
223 dump_register(GEVNTADRLO(0)),
224 dump_register(GEVNTADRHI(0)),
225 dump_register(GEVNTSIZ(0)),
226 dump_register(GEVNTCOUNT(0)),
227
228 dump_register(GHWPARAMS8),
229 dump_register(DCFG),
230 dump_register(DCTL),
231 dump_register(DEVTEN),
232 dump_register(DSTS),
233 dump_register(DGCMDPAR),
234 dump_register(DGCMD),
235 dump_register(DALEPENA),
236
237 dump_ep_register_set(0),
238 dump_ep_register_set(1),
239 dump_ep_register_set(2),
240 dump_ep_register_set(3),
241 dump_ep_register_set(4),
242 dump_ep_register_set(5),
243 dump_ep_register_set(6),
244 dump_ep_register_set(7),
245 dump_ep_register_set(8),
246 dump_ep_register_set(9),
247 dump_ep_register_set(10),
248 dump_ep_register_set(11),
249 dump_ep_register_set(12),
250 dump_ep_register_set(13),
251 dump_ep_register_set(14),
252 dump_ep_register_set(15),
253 dump_ep_register_set(16),
254 dump_ep_register_set(17),
255 dump_ep_register_set(18),
256 dump_ep_register_set(19),
257 dump_ep_register_set(20),
258 dump_ep_register_set(21),
259 dump_ep_register_set(22),
260 dump_ep_register_set(23),
261 dump_ep_register_set(24),
262 dump_ep_register_set(25),
263 dump_ep_register_set(26),
264 dump_ep_register_set(27),
265 dump_ep_register_set(28),
266 dump_ep_register_set(29),
267 dump_ep_register_set(30),
268 dump_ep_register_set(31),
269
270 dump_register(OCFG),
271 dump_register(OCTL),
272 dump_register(OEVT),
273 dump_register(OEVTEN),
274 dump_register(OSTS),
275 };
276
277 static int dwc3_mode_show(struct seq_file *s, void *unused)
278 {
279 struct dwc3 *dwc = s->private;
280 unsigned long flags;
281 u32 reg;
282
283 spin_lock_irqsave(&dwc->lock, flags);
284 reg = dwc3_readl(dwc->regs, DWC3_GCTL);
285 spin_unlock_irqrestore(&dwc->lock, flags);
286
287 switch (DWC3_GCTL_PRTCAP(reg)) {
288 case DWC3_GCTL_PRTCAP_HOST:
289 seq_printf(s, "host\n");
290 break;
291 case DWC3_GCTL_PRTCAP_DEVICE:
292 seq_printf(s, "device\n");
293 break;
294 case DWC3_GCTL_PRTCAP_OTG:
295 seq_printf(s, "otg\n");
296 break;
297 default:
298 seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
299 }
300
301 return 0;
302 }
303
304 static int dwc3_mode_open(struct inode *inode, struct file *file)
305 {
306 return single_open(file, dwc3_mode_show, inode->i_private);
307 }
308
309 static ssize_t dwc3_mode_write(struct file *file,
310 const char __user *ubuf, size_t count, loff_t *ppos)
311 {
312 struct seq_file *s = file->private_data;
313 struct dwc3 *dwc = s->private;
314 u32 mode = 0;
315 char buf[32];
316
317 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
318 return -EFAULT;
319
320 if (!strncmp(buf, "host", 4))
321 mode = DWC3_GCTL_PRTCAP_HOST;
322
323 if (!strncmp(buf, "device", 6))
324 mode = DWC3_GCTL_PRTCAP_DEVICE;
325
326 if (!strncmp(buf, "otg", 3))
327 mode = DWC3_GCTL_PRTCAP_OTG;
328
329 dwc3_set_mode(dwc, mode);
330
331 return count;
332 }
333
334 static const struct file_operations dwc3_mode_fops = {
335 .open = dwc3_mode_open,
336 .write = dwc3_mode_write,
337 .read = seq_read,
338 .llseek = seq_lseek,
339 .release = single_release,
340 };
341
342 static int dwc3_testmode_show(struct seq_file *s, void *unused)
343 {
344 struct dwc3 *dwc = s->private;
345 unsigned long flags;
346 u32 reg;
347
348 spin_lock_irqsave(&dwc->lock, flags);
349 reg = dwc3_readl(dwc->regs, DWC3_DCTL);
350 reg &= DWC3_DCTL_TSTCTRL_MASK;
351 reg >>= 1;
352 spin_unlock_irqrestore(&dwc->lock, flags);
353
354 switch (reg) {
355 case 0:
356 seq_printf(s, "no test\n");
357 break;
358 case TEST_J:
359 seq_printf(s, "test_j\n");
360 break;
361 case TEST_K:
362 seq_printf(s, "test_k\n");
363 break;
364 case TEST_SE0_NAK:
365 seq_printf(s, "test_se0_nak\n");
366 break;
367 case TEST_PACKET:
368 seq_printf(s, "test_packet\n");
369 break;
370 case TEST_FORCE_EN:
371 seq_printf(s, "test_force_enable\n");
372 break;
373 default:
374 seq_printf(s, "UNKNOWN %d\n", reg);
375 }
376
377 return 0;
378 }
379
380 static int dwc3_testmode_open(struct inode *inode, struct file *file)
381 {
382 return single_open(file, dwc3_testmode_show, inode->i_private);
383 }
384
385 static ssize_t dwc3_testmode_write(struct file *file,
386 const char __user *ubuf, size_t count, loff_t *ppos)
387 {
388 struct seq_file *s = file->private_data;
389 struct dwc3 *dwc = s->private;
390 unsigned long flags;
391 u32 testmode = 0;
392 char buf[32];
393
394 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
395 return -EFAULT;
396
397 if (!strncmp(buf, "test_j", 6))
398 testmode = TEST_J;
399 else if (!strncmp(buf, "test_k", 6))
400 testmode = TEST_K;
401 else if (!strncmp(buf, "test_se0_nak", 12))
402 testmode = TEST_SE0_NAK;
403 else if (!strncmp(buf, "test_packet", 11))
404 testmode = TEST_PACKET;
405 else if (!strncmp(buf, "test_force_enable", 17))
406 testmode = TEST_FORCE_EN;
407 else
408 testmode = 0;
409
410 spin_lock_irqsave(&dwc->lock, flags);
411 dwc3_gadget_set_test_mode(dwc, testmode);
412 spin_unlock_irqrestore(&dwc->lock, flags);
413
414 return count;
415 }
416
417 static const struct file_operations dwc3_testmode_fops = {
418 .open = dwc3_testmode_open,
419 .write = dwc3_testmode_write,
420 .read = seq_read,
421 .llseek = seq_lseek,
422 .release = single_release,
423 };
424
425 static int dwc3_link_state_show(struct seq_file *s, void *unused)
426 {
427 struct dwc3 *dwc = s->private;
428 unsigned long flags;
429 enum dwc3_link_state state;
430 u32 reg;
431
432 spin_lock_irqsave(&dwc->lock, flags);
433 reg = dwc3_readl(dwc->regs, DWC3_DSTS);
434 state = DWC3_DSTS_USBLNKST(reg);
435 spin_unlock_irqrestore(&dwc->lock, flags);
436
437 seq_printf(s, "%s\n", dwc3_gadget_link_string(state));
438
439 return 0;
440 }
441
442 static int dwc3_link_state_open(struct inode *inode, struct file *file)
443 {
444 return single_open(file, dwc3_link_state_show, inode->i_private);
445 }
446
447 static ssize_t dwc3_link_state_write(struct file *file,
448 const char __user *ubuf, size_t count, loff_t *ppos)
449 {
450 struct seq_file *s = file->private_data;
451 struct dwc3 *dwc = s->private;
452 unsigned long flags;
453 enum dwc3_link_state state = 0;
454 char buf[32];
455
456 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
457 return -EFAULT;
458
459 if (!strncmp(buf, "SS.Disabled", 11))
460 state = DWC3_LINK_STATE_SS_DIS;
461 else if (!strncmp(buf, "Rx.Detect", 9))
462 state = DWC3_LINK_STATE_RX_DET;
463 else if (!strncmp(buf, "SS.Inactive", 11))
464 state = DWC3_LINK_STATE_SS_INACT;
465 else if (!strncmp(buf, "Recovery", 8))
466 state = DWC3_LINK_STATE_RECOV;
467 else if (!strncmp(buf, "Compliance", 10))
468 state = DWC3_LINK_STATE_CMPLY;
469 else if (!strncmp(buf, "Loopback", 8))
470 state = DWC3_LINK_STATE_LPBK;
471 else
472 return -EINVAL;
473
474 spin_lock_irqsave(&dwc->lock, flags);
475 dwc3_gadget_set_link_state(dwc, state);
476 spin_unlock_irqrestore(&dwc->lock, flags);
477
478 return count;
479 }
480
481 static const struct file_operations dwc3_link_state_fops = {
482 .open = dwc3_link_state_open,
483 .write = dwc3_link_state_write,
484 .read = seq_read,
485 .llseek = seq_lseek,
486 .release = single_release,
487 };
488
489 struct dwc3_ep_file_map {
490 char name[25];
491 int (*show)(struct seq_file *s, void *unused);
492 };
493
494 static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused)
495 {
496 struct dwc3_ep *dep = s->private;
497 struct dwc3 *dwc = dep->dwc;
498 unsigned long flags;
499 u32 val;
500
501 spin_lock_irqsave(&dwc->lock, flags);
502 val = dwc3_core_fifo_space(dep, DWC3_TXFIFOQ);
503 seq_printf(s, "%u\n", val);
504 spin_unlock_irqrestore(&dwc->lock, flags);
505
506 return 0;
507 }
508
509 static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused)
510 {
511 struct dwc3_ep *dep = s->private;
512 struct dwc3 *dwc = dep->dwc;
513 unsigned long flags;
514 u32 val;
515
516 spin_lock_irqsave(&dwc->lock, flags);
517 val = dwc3_core_fifo_space(dep, DWC3_RXFIFOQ);
518 seq_printf(s, "%u\n", val);
519 spin_unlock_irqrestore(&dwc->lock, flags);
520
521 return 0;
522 }
523
524 static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused)
525 {
526 struct dwc3_ep *dep = s->private;
527 struct dwc3 *dwc = dep->dwc;
528 unsigned long flags;
529 u32 val;
530
531 spin_lock_irqsave(&dwc->lock, flags);
532 val = dwc3_core_fifo_space(dep, DWC3_TXREQQ);
533 seq_printf(s, "%u\n", val);
534 spin_unlock_irqrestore(&dwc->lock, flags);
535
536 return 0;
537 }
538
539 static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused)
540 {
541 struct dwc3_ep *dep = s->private;
542 struct dwc3 *dwc = dep->dwc;
543 unsigned long flags;
544 u32 val;
545
546 spin_lock_irqsave(&dwc->lock, flags);
547 val = dwc3_core_fifo_space(dep, DWC3_RXREQQ);
548 seq_printf(s, "%u\n", val);
549 spin_unlock_irqrestore(&dwc->lock, flags);
550
551 return 0;
552 }
553
554 static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused)
555 {
556 struct dwc3_ep *dep = s->private;
557 struct dwc3 *dwc = dep->dwc;
558 unsigned long flags;
559 u32 val;
560
561 spin_lock_irqsave(&dwc->lock, flags);
562 val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ);
563 seq_printf(s, "%u\n", val);
564 spin_unlock_irqrestore(&dwc->lock, flags);
565
566 return 0;
567 }
568
569 static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused)
570 {
571 struct dwc3_ep *dep = s->private;
572 struct dwc3 *dwc = dep->dwc;
573 unsigned long flags;
574 u32 val;
575
576 spin_lock_irqsave(&dwc->lock, flags);
577 val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ);
578 seq_printf(s, "%u\n", val);
579 spin_unlock_irqrestore(&dwc->lock, flags);
580
581 return 0;
582 }
583
584 static int dwc3_event_queue_show(struct seq_file *s, void *unused)
585 {
586 struct dwc3_ep *dep = s->private;
587 struct dwc3 *dwc = dep->dwc;
588 unsigned long flags;
589 u32 val;
590
591 spin_lock_irqsave(&dwc->lock, flags);
592 val = dwc3_core_fifo_space(dep, DWC3_EVENTQ);
593 seq_printf(s, "%u\n", val);
594 spin_unlock_irqrestore(&dwc->lock, flags);
595
596 return 0;
597 }
598
599 static int dwc3_ep_transfer_type_show(struct seq_file *s, void *unused)
600 {
601 struct dwc3_ep *dep = s->private;
602 struct dwc3 *dwc = dep->dwc;
603 unsigned long flags;
604
605 spin_lock_irqsave(&dwc->lock, flags);
606 if (!(dep->flags & DWC3_EP_ENABLED) ||
607 !dep->endpoint.desc) {
608 seq_printf(s, "--\n");
609 goto out;
610 }
611
612 switch (usb_endpoint_type(dep->endpoint.desc)) {
613 case USB_ENDPOINT_XFER_CONTROL:
614 seq_printf(s, "control\n");
615 break;
616 case USB_ENDPOINT_XFER_ISOC:
617 seq_printf(s, "isochronous\n");
618 break;
619 case USB_ENDPOINT_XFER_BULK:
620 seq_printf(s, "bulk\n");
621 break;
622 case USB_ENDPOINT_XFER_INT:
623 seq_printf(s, "interrupt\n");
624 break;
625 default:
626 seq_printf(s, "--\n");
627 }
628
629 out:
630 spin_unlock_irqrestore(&dwc->lock, flags);
631
632 return 0;
633 }
634
635 static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused)
636 {
637 struct dwc3_ep *dep = s->private;
638 struct dwc3 *dwc = dep->dwc;
639 unsigned long flags;
640 int i;
641
642 spin_lock_irqsave(&dwc->lock, flags);
643 if (dep->number <= 1) {
644 seq_printf(s, "--\n");
645 goto out;
646 }
647
648 seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
649
650 for (i = 0; i < DWC3_TRB_NUM; i++) {
651 struct dwc3_trb *trb = &dep->trb_pool[i];
652 unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl);
653
654 seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n",
655 trb->bph, trb->bpl, trb->size,
656 dwc3_trb_type_string(type),
657 !!(trb->ctrl & DWC3_TRB_CTRL_IOC),
658 !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI),
659 !!(trb->ctrl & DWC3_TRB_CTRL_CSP),
660 !!(trb->ctrl & DWC3_TRB_CTRL_CHN),
661 !!(trb->ctrl & DWC3_TRB_CTRL_LST),
662 !!(trb->ctrl & DWC3_TRB_CTRL_HWO),
663 dep->trb_enqueue == i ? 'E' : ' ',
664 dep->trb_dequeue == i ? 'D' : ' ');
665 }
666
667 out:
668 spin_unlock_irqrestore(&dwc->lock, flags);
669
670 return 0;
671 }
672
673 static struct dwc3_ep_file_map map[] = {
674 { "tx_fifo_queue", dwc3_tx_fifo_queue_show, },
675 { "rx_fifo_queue", dwc3_rx_fifo_queue_show, },
676 { "tx_request_queue", dwc3_tx_request_queue_show, },
677 { "rx_request_queue", dwc3_rx_request_queue_show, },
678 { "rx_info_queue", dwc3_rx_info_queue_show, },
679 { "descriptor_fetch_queue", dwc3_descriptor_fetch_queue_show, },
680 { "event_queue", dwc3_event_queue_show, },
681 { "transfer_type", dwc3_ep_transfer_type_show, },
682 { "trb_ring", dwc3_ep_trb_ring_show, },
683 };
684
685 static int dwc3_endpoint_open(struct inode *inode, struct file *file)
686 {
687 const char *file_name = file_dentry(file)->d_iname;
688 struct dwc3_ep_file_map *f_map;
689 int i;
690
691 for (i = 0; i < ARRAY_SIZE(map); i++) {
692 f_map = &map[i];
693
694 if (strcmp(f_map->name, file_name) == 0)
695 break;
696 }
697
698 return single_open(file, f_map->show, inode->i_private);
699 }
700
701 static const struct file_operations dwc3_endpoint_fops = {
702 .open = dwc3_endpoint_open,
703 .read = seq_read,
704 .llseek = seq_lseek,
705 .release = single_release,
706 };
707
708 static void dwc3_debugfs_create_endpoint_file(struct dwc3_ep *dep,
709 struct dentry *parent, int type)
710 {
711 struct dentry *file;
712 struct dwc3_ep_file_map *ep_file = &map[type];
713
714 file = debugfs_create_file(ep_file->name, S_IRUGO, parent, dep,
715 &dwc3_endpoint_fops);
716 }
717
718 static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep,
719 struct dentry *parent)
720 {
721 int i;
722
723 for (i = 0; i < ARRAY_SIZE(map); i++)
724 dwc3_debugfs_create_endpoint_file(dep, parent, i);
725 }
726
727 static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep,
728 struct dentry *parent)
729 {
730 struct dentry *dir;
731
732 dir = debugfs_create_dir(dep->name, parent);
733 if (IS_ERR_OR_NULL(dir))
734 return;
735
736 dwc3_debugfs_create_endpoint_files(dep, dir);
737 }
738
739 static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc,
740 struct dentry *parent)
741 {
742 int i;
743
744 for (i = 0; i < dwc->num_eps; i++) {
745 struct dwc3_ep *dep = dwc->eps[i];
746
747 if (!dep)
748 continue;
749
750 dwc3_debugfs_create_endpoint_dir(dep, parent);
751 }
752 }
753
754 void dwc3_debugfs_init(struct dwc3 *dwc)
755 {
756 struct dentry *root;
757 struct dentry *file;
758
759 root = debugfs_create_dir(dev_name(dwc->dev), NULL);
760 if (IS_ERR_OR_NULL(root)) {
761 if (!root)
762 dev_err(dwc->dev, "Can't create debugfs root\n");
763 return;
764 }
765 dwc->root = root;
766
767 dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
768 if (!dwc->regset) {
769 debugfs_remove_recursive(root);
770 return;
771 }
772
773 dwc->regset->regs = dwc3_regs;
774 dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
775 dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START;
776
777 file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
778 if (!file)
779 dev_dbg(dwc->dev, "Can't create debugfs regdump\n");
780
781 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
782 file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
783 dwc, &dwc3_mode_fops);
784 if (!file)
785 dev_dbg(dwc->dev, "Can't create debugfs mode\n");
786 }
787
788 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
789 IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
790 file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
791 dwc, &dwc3_testmode_fops);
792 if (!file)
793 dev_dbg(dwc->dev, "Can't create debugfs testmode\n");
794
795 file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR,
796 root, dwc, &dwc3_link_state_fops);
797 if (!file)
798 dev_dbg(dwc->dev, "Can't create debugfs link_state\n");
799
800 dwc3_debugfs_create_endpoint_dirs(dwc, root);
801 }
802 }
803
804 void dwc3_debugfs_exit(struct dwc3 *dwc)
805 {
806 debugfs_remove_recursive(dwc->root);
807 kfree(dwc->regset);
808 }
Linux with added FPC-III support