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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
57static 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(GDBGBMU),
85 dump_register(GDBGLSPMUX),
86 dump_register(GDBGLSP),
87 dump_register(GDBGEPINFO0),
88 dump_register(GDBGEPINFO1),
89 dump_register(GPRTBIMAP_HS0),
90 dump_register(GPRTBIMAP_HS1),
91 dump_register(GPRTBIMAP_FS0),
92 dump_register(GPRTBIMAP_FS1),
93
94 dump_register(GUSB2PHYCFG(0)),
95 dump_register(GUSB2PHYCFG(1)),
96 dump_register(GUSB2PHYCFG(2)),
97 dump_register(GUSB2PHYCFG(3)),
98 dump_register(GUSB2PHYCFG(4)),
99 dump_register(GUSB2PHYCFG(5)),
100 dump_register(GUSB2PHYCFG(6)),
101 dump_register(GUSB2PHYCFG(7)),
102 dump_register(GUSB2PHYCFG(8)),
103 dump_register(GUSB2PHYCFG(9)),
104 dump_register(GUSB2PHYCFG(10)),
105 dump_register(GUSB2PHYCFG(11)),
106 dump_register(GUSB2PHYCFG(12)),
107 dump_register(GUSB2PHYCFG(13)),
108 dump_register(GUSB2PHYCFG(14)),
109 dump_register(GUSB2PHYCFG(15)),
110
111 dump_register(GUSB2I2CCTL(0)),
112 dump_register(GUSB2I2CCTL(1)),
113 dump_register(GUSB2I2CCTL(2)),
114 dump_register(GUSB2I2CCTL(3)),
115 dump_register(GUSB2I2CCTL(4)),
116 dump_register(GUSB2I2CCTL(5)),
117 dump_register(GUSB2I2CCTL(6)),
118 dump_register(GUSB2I2CCTL(7)),
119 dump_register(GUSB2I2CCTL(8)),
120 dump_register(GUSB2I2CCTL(9)),
121 dump_register(GUSB2I2CCTL(10)),
122 dump_register(GUSB2I2CCTL(11)),
123 dump_register(GUSB2I2CCTL(12)),
124 dump_register(GUSB2I2CCTL(13)),
125 dump_register(GUSB2I2CCTL(14)),
126 dump_register(GUSB2I2CCTL(15)),
127
128 dump_register(GUSB2PHYACC(0)),
129 dump_register(GUSB2PHYACC(1)),
130 dump_register(GUSB2PHYACC(2)),
131 dump_register(GUSB2PHYACC(3)),
132 dump_register(GUSB2PHYACC(4)),
133 dump_register(GUSB2PHYACC(5)),
134 dump_register(GUSB2PHYACC(6)),
135 dump_register(GUSB2PHYACC(7)),
136 dump_register(GUSB2PHYACC(8)),
137 dump_register(GUSB2PHYACC(9)),
138 dump_register(GUSB2PHYACC(10)),
139 dump_register(GUSB2PHYACC(11)),
140 dump_register(GUSB2PHYACC(12)),
141 dump_register(GUSB2PHYACC(13)),
142 dump_register(GUSB2PHYACC(14)),
143 dump_register(GUSB2PHYACC(15)),
144
145 dump_register(GUSB3PIPECTL(0)),
146 dump_register(GUSB3PIPECTL(1)),
147 dump_register(GUSB3PIPECTL(2)),
148 dump_register(GUSB3PIPECTL(3)),
149 dump_register(GUSB3PIPECTL(4)),
150 dump_register(GUSB3PIPECTL(5)),
151 dump_register(GUSB3PIPECTL(6)),
152 dump_register(GUSB3PIPECTL(7)),
153 dump_register(GUSB3PIPECTL(8)),
154 dump_register(GUSB3PIPECTL(9)),
155 dump_register(GUSB3PIPECTL(10)),
156 dump_register(GUSB3PIPECTL(11)),
157 dump_register(GUSB3PIPECTL(12)),
158 dump_register(GUSB3PIPECTL(13)),
159 dump_register(GUSB3PIPECTL(14)),
160 dump_register(GUSB3PIPECTL(15)),
161
162 dump_register(GTXFIFOSIZ(0)),
163 dump_register(GTXFIFOSIZ(1)),
164 dump_register(GTXFIFOSIZ(2)),
165 dump_register(GTXFIFOSIZ(3)),
166 dump_register(GTXFIFOSIZ(4)),
167 dump_register(GTXFIFOSIZ(5)),
168 dump_register(GTXFIFOSIZ(6)),
169 dump_register(GTXFIFOSIZ(7)),
170 dump_register(GTXFIFOSIZ(8)),
171 dump_register(GTXFIFOSIZ(9)),
172 dump_register(GTXFIFOSIZ(10)),
173 dump_register(GTXFIFOSIZ(11)),
174 dump_register(GTXFIFOSIZ(12)),
175 dump_register(GTXFIFOSIZ(13)),
176 dump_register(GTXFIFOSIZ(14)),
177 dump_register(GTXFIFOSIZ(15)),
178 dump_register(GTXFIFOSIZ(16)),
179 dump_register(GTXFIFOSIZ(17)),
180 dump_register(GTXFIFOSIZ(18)),
181 dump_register(GTXFIFOSIZ(19)),
182 dump_register(GTXFIFOSIZ(20)),
183 dump_register(GTXFIFOSIZ(21)),
184 dump_register(GTXFIFOSIZ(22)),
185 dump_register(GTXFIFOSIZ(23)),
186 dump_register(GTXFIFOSIZ(24)),
187 dump_register(GTXFIFOSIZ(25)),
188 dump_register(GTXFIFOSIZ(26)),
189 dump_register(GTXFIFOSIZ(27)),
190 dump_register(GTXFIFOSIZ(28)),
191 dump_register(GTXFIFOSIZ(29)),
192 dump_register(GTXFIFOSIZ(30)),
193 dump_register(GTXFIFOSIZ(31)),
194
195 dump_register(GRXFIFOSIZ(0)),
196 dump_register(GRXFIFOSIZ(1)),
197 dump_register(GRXFIFOSIZ(2)),
198 dump_register(GRXFIFOSIZ(3)),
199 dump_register(GRXFIFOSIZ(4)),
200 dump_register(GRXFIFOSIZ(5)),
201 dump_register(GRXFIFOSIZ(6)),
202 dump_register(GRXFIFOSIZ(7)),
203 dump_register(GRXFIFOSIZ(8)),
204 dump_register(GRXFIFOSIZ(9)),
205 dump_register(GRXFIFOSIZ(10)),
206 dump_register(GRXFIFOSIZ(11)),
207 dump_register(GRXFIFOSIZ(12)),
208 dump_register(GRXFIFOSIZ(13)),
209 dump_register(GRXFIFOSIZ(14)),
210 dump_register(GRXFIFOSIZ(15)),
211 dump_register(GRXFIFOSIZ(16)),
212 dump_register(GRXFIFOSIZ(17)),
213 dump_register(GRXFIFOSIZ(18)),
214 dump_register(GRXFIFOSIZ(19)),
215 dump_register(GRXFIFOSIZ(20)),
216 dump_register(GRXFIFOSIZ(21)),
217 dump_register(GRXFIFOSIZ(22)),
218 dump_register(GRXFIFOSIZ(23)),
219 dump_register(GRXFIFOSIZ(24)),
220 dump_register(GRXFIFOSIZ(25)),
221 dump_register(GRXFIFOSIZ(26)),
222 dump_register(GRXFIFOSIZ(27)),
223 dump_register(GRXFIFOSIZ(28)),
224 dump_register(GRXFIFOSIZ(29)),
225 dump_register(GRXFIFOSIZ(30)),
226 dump_register(GRXFIFOSIZ(31)),
227
228 dump_register(GEVNTADRLO(0)),
229 dump_register(GEVNTADRHI(0)),
230 dump_register(GEVNTSIZ(0)),
231 dump_register(GEVNTCOUNT(0)),
232
233 dump_register(GHWPARAMS8),
234 dump_register(DCFG),
235 dump_register(DCTL),
236 dump_register(DEVTEN),
237 dump_register(DSTS),
238 dump_register(DGCMDPAR),
239 dump_register(DGCMD),
240 dump_register(DALEPENA),
241
242 dump_ep_register_set(0),
243 dump_ep_register_set(1),
244 dump_ep_register_set(2),
245 dump_ep_register_set(3),
246 dump_ep_register_set(4),
247 dump_ep_register_set(5),
248 dump_ep_register_set(6),
249 dump_ep_register_set(7),
250 dump_ep_register_set(8),
251 dump_ep_register_set(9),
252 dump_ep_register_set(10),
253 dump_ep_register_set(11),
254 dump_ep_register_set(12),
255 dump_ep_register_set(13),
256 dump_ep_register_set(14),
257 dump_ep_register_set(15),
258 dump_ep_register_set(16),
259 dump_ep_register_set(17),
260 dump_ep_register_set(18),
261 dump_ep_register_set(19),
262 dump_ep_register_set(20),
263 dump_ep_register_set(21),
264 dump_ep_register_set(22),
265 dump_ep_register_set(23),
266 dump_ep_register_set(24),
267 dump_ep_register_set(25),
268 dump_ep_register_set(26),
269 dump_ep_register_set(27),
270 dump_ep_register_set(28),
271 dump_ep_register_set(29),
272 dump_ep_register_set(30),
273 dump_ep_register_set(31),
274
275 dump_register(OCFG),
276 dump_register(OCTL),
277 dump_register(OEVT),
278 dump_register(OEVTEN),
279 dump_register(OSTS),
280};
281
282static int dwc3_mode_show(struct seq_file *s, void *unused)
283{
284 struct dwc3 *dwc = s->private;
285 unsigned long flags;
286 u32 reg;
287
288 spin_lock_irqsave(&dwc->lock, flags);
289 reg = dwc3_readl(dwc->regs, DWC3_GCTL);
290 spin_unlock_irqrestore(&dwc->lock, flags);
291
292 switch (DWC3_GCTL_PRTCAP(reg)) {
293 case DWC3_GCTL_PRTCAP_HOST:
294 seq_printf(s, "host\n");
295 break;
296 case DWC3_GCTL_PRTCAP_DEVICE:
297 seq_printf(s, "device\n");
298 break;
299 case DWC3_GCTL_PRTCAP_OTG:
300 seq_printf(s, "otg\n");
301 break;
302 default:
303 seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
304 }
305
306 return 0;
307}
308
309static int dwc3_mode_open(struct inode *inode, struct file *file)
310{
311 return single_open(file, dwc3_mode_show, inode->i_private);
312}
313
314static ssize_t dwc3_mode_write(struct file *file,
315 const char __user *ubuf, size_t count, loff_t *ppos)
316{
317 struct seq_file *s = file->private_data;
318 struct dwc3 *dwc = s->private;
319 u32 mode = 0;
320 char buf[32];
321
322 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
323 return -EFAULT;
324
325 if (!strncmp(buf, "host", 4))
326 mode = DWC3_GCTL_PRTCAP_HOST;
327
328 if (!strncmp(buf, "device", 6))
329 mode = DWC3_GCTL_PRTCAP_DEVICE;
330
331 if (!strncmp(buf, "otg", 3))
332 mode = DWC3_GCTL_PRTCAP_OTG;
333
334 dwc3_set_mode(dwc, mode);
335
336 return count;
337}
338
339static const struct file_operations dwc3_mode_fops = {
340 .open = dwc3_mode_open,
341 .write = dwc3_mode_write,
342 .read = seq_read,
343 .llseek = seq_lseek,
344 .release = single_release,
345};
346
347static int dwc3_testmode_show(struct seq_file *s, void *unused)
348{
349 struct dwc3 *dwc = s->private;
350 unsigned long flags;
351 u32 reg;
352
353 spin_lock_irqsave(&dwc->lock, flags);
354 reg = dwc3_readl(dwc->regs, DWC3_DCTL);
355 reg &= DWC3_DCTL_TSTCTRL_MASK;
356 reg >>= 1;
357 spin_unlock_irqrestore(&dwc->lock, flags);
358
359 switch (reg) {
360 case 0:
361 seq_printf(s, "no test\n");
362 break;
363 case TEST_J:
364 seq_printf(s, "test_j\n");
365 break;
366 case TEST_K:
367 seq_printf(s, "test_k\n");
368 break;
369 case TEST_SE0_NAK:
370 seq_printf(s, "test_se0_nak\n");
371 break;
372 case TEST_PACKET:
373 seq_printf(s, "test_packet\n");
374 break;
375 case TEST_FORCE_EN:
376 seq_printf(s, "test_force_enable\n");
377 break;
378 default:
379 seq_printf(s, "UNKNOWN %d\n", reg);
380 }
381
382 return 0;
383}
384
385static int dwc3_testmode_open(struct inode *inode, struct file *file)
386{
387 return single_open(file, dwc3_testmode_show, inode->i_private);
388}
389
390static ssize_t dwc3_testmode_write(struct file *file,
391 const char __user *ubuf, size_t count, loff_t *ppos)
392{
393 struct seq_file *s = file->private_data;
394 struct dwc3 *dwc = s->private;
395 unsigned long flags;
396 u32 testmode = 0;
397 char buf[32];
398
399 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
400 return -EFAULT;
401
402 if (!strncmp(buf, "test_j", 6))
403 testmode = TEST_J;
404 else if (!strncmp(buf, "test_k", 6))
405 testmode = TEST_K;
406 else if (!strncmp(buf, "test_se0_nak", 12))
407 testmode = TEST_SE0_NAK;
408 else if (!strncmp(buf, "test_packet", 11))
409 testmode = TEST_PACKET;
410 else if (!strncmp(buf, "test_force_enable", 17))
411 testmode = TEST_FORCE_EN;
412 else
413 testmode = 0;
414
415 spin_lock_irqsave(&dwc->lock, flags);
416 dwc3_gadget_set_test_mode(dwc, testmode);
417 spin_unlock_irqrestore(&dwc->lock, flags);
418
419 return count;
420}
421
422static const struct file_operations dwc3_testmode_fops = {
423 .open = dwc3_testmode_open,
424 .write = dwc3_testmode_write,
425 .read = seq_read,
426 .llseek = seq_lseek,
427 .release = single_release,
428};
429
430static int dwc3_link_state_show(struct seq_file *s, void *unused)
431{
432 struct dwc3 *dwc = s->private;
433 unsigned long flags;
434 enum dwc3_link_state state;
435 u32 reg;
436
437 spin_lock_irqsave(&dwc->lock, flags);
438 reg = dwc3_readl(dwc->regs, DWC3_DSTS);
439 state = DWC3_DSTS_USBLNKST(reg);
440 spin_unlock_irqrestore(&dwc->lock, flags);
441
442 seq_printf(s, "%s\n", dwc3_gadget_link_string(state));
443
444 return 0;
445}
446
447static int dwc3_link_state_open(struct inode *inode, struct file *file)
448{
449 return single_open(file, dwc3_link_state_show, inode->i_private);
450}
451
452static ssize_t dwc3_link_state_write(struct file *file,
453 const char __user *ubuf, size_t count, loff_t *ppos)
454{
455 struct seq_file *s = file->private_data;
456 struct dwc3 *dwc = s->private;
457 unsigned long flags;
458 enum dwc3_link_state state = 0;
459 char buf[32];
460
461 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
462 return -EFAULT;
463
464 if (!strncmp(buf, "SS.Disabled", 11))
465 state = DWC3_LINK_STATE_SS_DIS;
466 else if (!strncmp(buf, "Rx.Detect", 9))
467 state = DWC3_LINK_STATE_RX_DET;
468 else if (!strncmp(buf, "SS.Inactive", 11))
469 state = DWC3_LINK_STATE_SS_INACT;
470 else if (!strncmp(buf, "Recovery", 8))
471 state = DWC3_LINK_STATE_RECOV;
472 else if (!strncmp(buf, "Compliance", 10))
473 state = DWC3_LINK_STATE_CMPLY;
474 else if (!strncmp(buf, "Loopback", 8))
475 state = DWC3_LINK_STATE_LPBK;
476 else
477 return -EINVAL;
478
479 spin_lock_irqsave(&dwc->lock, flags);
480 dwc3_gadget_set_link_state(dwc, state);
481 spin_unlock_irqrestore(&dwc->lock, flags);
482
483 return count;
484}
485
486static const struct file_operations dwc3_link_state_fops = {
487 .open = dwc3_link_state_open,
488 .write = dwc3_link_state_write,
489 .read = seq_read,
490 .llseek = seq_lseek,
491 .release = single_release,
492};
493
494struct dwc3_ep_file_map {
495 const char name[25];
496 const struct file_operations *const fops;
497};
498
499static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused)
500{
501 struct dwc3_ep *dep = s->private;
502 struct dwc3 *dwc = dep->dwc;
503 unsigned long flags;
504 u32 val;
505
506 spin_lock_irqsave(&dwc->lock, flags);
507 val = dwc3_core_fifo_space(dep, DWC3_TXFIFOQ);
508 seq_printf(s, "%u\n", val);
509 spin_unlock_irqrestore(&dwc->lock, flags);
510
511 return 0;
512}
513
514static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused)
515{
516 struct dwc3_ep *dep = s->private;
517 struct dwc3 *dwc = dep->dwc;
518 unsigned long flags;
519 u32 val;
520
521 spin_lock_irqsave(&dwc->lock, flags);
522 val = dwc3_core_fifo_space(dep, DWC3_RXFIFOQ);
523 seq_printf(s, "%u\n", val);
524 spin_unlock_irqrestore(&dwc->lock, flags);
525
526 return 0;
527}
528
529static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused)
530{
531 struct dwc3_ep *dep = s->private;
532 struct dwc3 *dwc = dep->dwc;
533 unsigned long flags;
534 u32 val;
535
536 spin_lock_irqsave(&dwc->lock, flags);
537 val = dwc3_core_fifo_space(dep, DWC3_TXREQQ);
538 seq_printf(s, "%u\n", val);
539 spin_unlock_irqrestore(&dwc->lock, flags);
540
541 return 0;
542}
543
544static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused)
545{
546 struct dwc3_ep *dep = s->private;
547 struct dwc3 *dwc = dep->dwc;
548 unsigned long flags;
549 u32 val;
550
551 spin_lock_irqsave(&dwc->lock, flags);
552 val = dwc3_core_fifo_space(dep, DWC3_RXREQQ);
553 seq_printf(s, "%u\n", val);
554 spin_unlock_irqrestore(&dwc->lock, flags);
555
556 return 0;
557}
558
559static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused)
560{
561 struct dwc3_ep *dep = s->private;
562 struct dwc3 *dwc = dep->dwc;
563 unsigned long flags;
564 u32 val;
565
566 spin_lock_irqsave(&dwc->lock, flags);
567 val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ);
568 seq_printf(s, "%u\n", val);
569 spin_unlock_irqrestore(&dwc->lock, flags);
570
571 return 0;
572}
573
574static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused)
575{
576 struct dwc3_ep *dep = s->private;
577 struct dwc3 *dwc = dep->dwc;
578 unsigned long flags;
579 u32 val;
580
581 spin_lock_irqsave(&dwc->lock, flags);
582 val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ);
583 seq_printf(s, "%u\n", val);
584 spin_unlock_irqrestore(&dwc->lock, flags);
585
586 return 0;
587}
588
589static int dwc3_event_queue_show(struct seq_file *s, void *unused)
590{
591 struct dwc3_ep *dep = s->private;
592 struct dwc3 *dwc = dep->dwc;
593 unsigned long flags;
594 u32 val;
595
596 spin_lock_irqsave(&dwc->lock, flags);
597 val = dwc3_core_fifo_space(dep, DWC3_EVENTQ);
598 seq_printf(s, "%u\n", val);
599 spin_unlock_irqrestore(&dwc->lock, flags);
600
601 return 0;
602}
603
604static int dwc3_transfer_type_show(struct seq_file *s, void *unused)
605{
606 struct dwc3_ep *dep = s->private;
607 struct dwc3 *dwc = dep->dwc;
608 unsigned long flags;
609
610 spin_lock_irqsave(&dwc->lock, flags);
611 if (!(dep->flags & DWC3_EP_ENABLED) ||
612 !dep->endpoint.desc) {
613 seq_printf(s, "--\n");
614 goto out;
615 }
616
617 switch (usb_endpoint_type(dep->endpoint.desc)) {
618 case USB_ENDPOINT_XFER_CONTROL:
619 seq_printf(s, "control\n");
620 break;
621 case USB_ENDPOINT_XFER_ISOC:
622 seq_printf(s, "isochronous\n");
623 break;
624 case USB_ENDPOINT_XFER_BULK:
625 seq_printf(s, "bulk\n");
626 break;
627 case USB_ENDPOINT_XFER_INT:
628 seq_printf(s, "interrupt\n");
629 break;
630 default:
631 seq_printf(s, "--\n");
632 }
633
634out:
635 spin_unlock_irqrestore(&dwc->lock, flags);
636
637 return 0;
638}
639
640static int dwc3_trb_ring_show(struct seq_file *s, void *unused)
641{
642 struct dwc3_ep *dep = s->private;
643 struct dwc3 *dwc = dep->dwc;
644 unsigned long flags;
645 int i;
646
647 spin_lock_irqsave(&dwc->lock, flags);
648 if (dep->number <= 1) {
649 seq_printf(s, "--\n");
650 goto out;
651 }
652
653 seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
654
655 for (i = 0; i < DWC3_TRB_NUM; i++) {
656 struct dwc3_trb *trb = &dep->trb_pool[i];
657 unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl);
658
659 seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n",
660 trb->bph, trb->bpl, trb->size,
661 dwc3_trb_type_string(type),
662 !!(trb->ctrl & DWC3_TRB_CTRL_IOC),
663 !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI),
664 !!(trb->ctrl & DWC3_TRB_CTRL_CSP),
665 !!(trb->ctrl & DWC3_TRB_CTRL_CHN),
666 !!(trb->ctrl & DWC3_TRB_CTRL_LST),
667 !!(trb->ctrl & DWC3_TRB_CTRL_HWO),
668 dep->trb_enqueue == i ? 'E' : ' ',
669 dep->trb_dequeue == i ? 'D' : ' ');
670 }
671
672out:
673 spin_unlock_irqrestore(&dwc->lock, flags);
674
675 return 0;
676}
677
678DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_queue);
679DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_queue);
680DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue);
681DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue);
682DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue);
683DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue);
684DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue);
685DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type);
686DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring);
687
688static const struct dwc3_ep_file_map dwc3_ep_file_map[] = {
689 { "tx_fifo_queue", &dwc3_tx_fifo_queue_fops, },
690 { "rx_fifo_queue", &dwc3_rx_fifo_queue_fops, },
691 { "tx_request_queue", &dwc3_tx_request_queue_fops, },
692 { "rx_request_queue", &dwc3_rx_request_queue_fops, },
693 { "rx_info_queue", &dwc3_rx_info_queue_fops, },
694 { "descriptor_fetch_queue", &dwc3_descriptor_fetch_queue_fops, },
695 { "event_queue", &dwc3_event_queue_fops, },
696 { "transfer_type", &dwc3_transfer_type_fops, },
697 { "trb_ring", &dwc3_trb_ring_fops, },
698};
699
700static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep,
701 struct dentry *parent)
702{
703 int i;
704
705 for (i = 0; i < ARRAY_SIZE(dwc3_ep_file_map); i++) {
706 const struct file_operations *fops = dwc3_ep_file_map[i].fops;
707 const char *name = dwc3_ep_file_map[i].name;
708
709 debugfs_create_file(name, S_IRUGO, parent, dep, fops);
710 }
711}
712
713static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep,
714 struct dentry *parent)
715{
716 struct dentry *dir;
717
718 dir = debugfs_create_dir(dep->name, parent);
719 if (IS_ERR_OR_NULL(dir))
720 return;
721
722 dwc3_debugfs_create_endpoint_files(dep, dir);
723}
724
725static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc,
726 struct dentry *parent)
727{
728 int i;
729
730 for (i = 0; i < dwc->num_eps; i++) {
731 struct dwc3_ep *dep = dwc->eps[i];
732
733 if (!dep)
734 continue;
735
736 dwc3_debugfs_create_endpoint_dir(dep, parent);
737 }
738}
739
740void dwc3_debugfs_init(struct dwc3 *dwc)
741{
742 struct dentry *root;
743 struct dentry *file;
744
745 root = debugfs_create_dir(dev_name(dwc->dev), NULL);
746 if (IS_ERR_OR_NULL(root)) {
747 if (!root)
748 dev_err(dwc->dev, "Can't create debugfs root\n");
749 return;
750 }
751 dwc->root = root;
752
753 dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
754 if (!dwc->regset) {
755 debugfs_remove_recursive(root);
756 return;
757 }
758
759 dwc->regset->regs = dwc3_regs;
760 dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
761 dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START;
762
763 file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
764 if (!file)
765 dev_dbg(dwc->dev, "Can't create debugfs regdump\n");
766
767 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
768 file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
769 dwc, &dwc3_mode_fops);
770 if (!file)
771 dev_dbg(dwc->dev, "Can't create debugfs mode\n");
772 }
773
774 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
775 IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
776 file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
777 dwc, &dwc3_testmode_fops);
778 if (!file)
779 dev_dbg(dwc->dev, "Can't create debugfs testmode\n");
780
781 file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR,
782 root, dwc, &dwc3_link_state_fops);
783 if (!file)
784 dev_dbg(dwc->dev, "Can't create debugfs link_state\n");
785
786 dwc3_debugfs_create_endpoint_dirs(dwc, root);
787 }
788}
789
790void dwc3_debugfs_exit(struct dwc3 *dwc)
791{
792 debugfs_remove_recursive(dwc->root);
793 kfree(dwc->regset);
794}