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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 - https://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 DWC3_LSP_MUX_UNSELECTED 0xfffff
29
30#define dump_register(nm) \
31{ \
32 .name = __stringify(nm), \
33 .offset = DWC3_ ##nm, \
34}
35
36#define dump_ep_register_set(n) \
37 { \
38 .name = "DEPCMDPAR2("__stringify(n)")", \
39 .offset = DWC3_DEP_BASE(n) + \
40 DWC3_DEPCMDPAR2, \
41 }, \
42 { \
43 .name = "DEPCMDPAR1("__stringify(n)")", \
44 .offset = DWC3_DEP_BASE(n) + \
45 DWC3_DEPCMDPAR1, \
46 }, \
47 { \
48 .name = "DEPCMDPAR0("__stringify(n)")", \
49 .offset = DWC3_DEP_BASE(n) + \
50 DWC3_DEPCMDPAR0, \
51 }, \
52 { \
53 .name = "DEPCMD("__stringify(n)")", \
54 .offset = DWC3_DEP_BASE(n) + \
55 DWC3_DEPCMD, \
56 }
57
58
59static const struct debugfs_reg32 dwc3_regs[] = {
60 dump_register(GSBUSCFG0),
61 dump_register(GSBUSCFG1),
62 dump_register(GTXTHRCFG),
63 dump_register(GRXTHRCFG),
64 dump_register(GCTL),
65 dump_register(GEVTEN),
66 dump_register(GSTS),
67 dump_register(GUCTL1),
68 dump_register(GSNPSID),
69 dump_register(GGPIO),
70 dump_register(GUID),
71 dump_register(GUCTL),
72 dump_register(GBUSERRADDR0),
73 dump_register(GBUSERRADDR1),
74 dump_register(GPRTBIMAP0),
75 dump_register(GPRTBIMAP1),
76 dump_register(GHWPARAMS0),
77 dump_register(GHWPARAMS1),
78 dump_register(GHWPARAMS2),
79 dump_register(GHWPARAMS3),
80 dump_register(GHWPARAMS4),
81 dump_register(GHWPARAMS5),
82 dump_register(GHWPARAMS6),
83 dump_register(GHWPARAMS7),
84 dump_register(GDBGFIFOSPACE),
85 dump_register(GDBGLTSSM),
86 dump_register(GDBGBMU),
87 dump_register(GPRTBIMAP_HS0),
88 dump_register(GPRTBIMAP_HS1),
89 dump_register(GPRTBIMAP_FS0),
90 dump_register(GPRTBIMAP_FS1),
91 dump_register(GUCTL2),
92 dump_register(VER_NUMBER),
93 dump_register(VER_TYPE),
94
95 dump_register(GUSB2PHYCFG(0)),
96 dump_register(GUSB2PHYCFG(1)),
97 dump_register(GUSB2PHYCFG(2)),
98 dump_register(GUSB2PHYCFG(3)),
99 dump_register(GUSB2PHYCFG(4)),
100 dump_register(GUSB2PHYCFG(5)),
101 dump_register(GUSB2PHYCFG(6)),
102 dump_register(GUSB2PHYCFG(7)),
103 dump_register(GUSB2PHYCFG(8)),
104 dump_register(GUSB2PHYCFG(9)),
105 dump_register(GUSB2PHYCFG(10)),
106 dump_register(GUSB2PHYCFG(11)),
107 dump_register(GUSB2PHYCFG(12)),
108 dump_register(GUSB2PHYCFG(13)),
109 dump_register(GUSB2PHYCFG(14)),
110 dump_register(GUSB2PHYCFG(15)),
111
112 dump_register(GUSB2I2CCTL(0)),
113 dump_register(GUSB2I2CCTL(1)),
114 dump_register(GUSB2I2CCTL(2)),
115 dump_register(GUSB2I2CCTL(3)),
116 dump_register(GUSB2I2CCTL(4)),
117 dump_register(GUSB2I2CCTL(5)),
118 dump_register(GUSB2I2CCTL(6)),
119 dump_register(GUSB2I2CCTL(7)),
120 dump_register(GUSB2I2CCTL(8)),
121 dump_register(GUSB2I2CCTL(9)),
122 dump_register(GUSB2I2CCTL(10)),
123 dump_register(GUSB2I2CCTL(11)),
124 dump_register(GUSB2I2CCTL(12)),
125 dump_register(GUSB2I2CCTL(13)),
126 dump_register(GUSB2I2CCTL(14)),
127 dump_register(GUSB2I2CCTL(15)),
128
129 dump_register(GUSB2PHYACC(0)),
130 dump_register(GUSB2PHYACC(1)),
131 dump_register(GUSB2PHYACC(2)),
132 dump_register(GUSB2PHYACC(3)),
133 dump_register(GUSB2PHYACC(4)),
134 dump_register(GUSB2PHYACC(5)),
135 dump_register(GUSB2PHYACC(6)),
136 dump_register(GUSB2PHYACC(7)),
137 dump_register(GUSB2PHYACC(8)),
138 dump_register(GUSB2PHYACC(9)),
139 dump_register(GUSB2PHYACC(10)),
140 dump_register(GUSB2PHYACC(11)),
141 dump_register(GUSB2PHYACC(12)),
142 dump_register(GUSB2PHYACC(13)),
143 dump_register(GUSB2PHYACC(14)),
144 dump_register(GUSB2PHYACC(15)),
145
146 dump_register(GUSB3PIPECTL(0)),
147 dump_register(GUSB3PIPECTL(1)),
148 dump_register(GUSB3PIPECTL(2)),
149 dump_register(GUSB3PIPECTL(3)),
150 dump_register(GUSB3PIPECTL(4)),
151 dump_register(GUSB3PIPECTL(5)),
152 dump_register(GUSB3PIPECTL(6)),
153 dump_register(GUSB3PIPECTL(7)),
154 dump_register(GUSB3PIPECTL(8)),
155 dump_register(GUSB3PIPECTL(9)),
156 dump_register(GUSB3PIPECTL(10)),
157 dump_register(GUSB3PIPECTL(11)),
158 dump_register(GUSB3PIPECTL(12)),
159 dump_register(GUSB3PIPECTL(13)),
160 dump_register(GUSB3PIPECTL(14)),
161 dump_register(GUSB3PIPECTL(15)),
162
163 dump_register(GTXFIFOSIZ(0)),
164 dump_register(GTXFIFOSIZ(1)),
165 dump_register(GTXFIFOSIZ(2)),
166 dump_register(GTXFIFOSIZ(3)),
167 dump_register(GTXFIFOSIZ(4)),
168 dump_register(GTXFIFOSIZ(5)),
169 dump_register(GTXFIFOSIZ(6)),
170 dump_register(GTXFIFOSIZ(7)),
171 dump_register(GTXFIFOSIZ(8)),
172 dump_register(GTXFIFOSIZ(9)),
173 dump_register(GTXFIFOSIZ(10)),
174 dump_register(GTXFIFOSIZ(11)),
175 dump_register(GTXFIFOSIZ(12)),
176 dump_register(GTXFIFOSIZ(13)),
177 dump_register(GTXFIFOSIZ(14)),
178 dump_register(GTXFIFOSIZ(15)),
179 dump_register(GTXFIFOSIZ(16)),
180 dump_register(GTXFIFOSIZ(17)),
181 dump_register(GTXFIFOSIZ(18)),
182 dump_register(GTXFIFOSIZ(19)),
183 dump_register(GTXFIFOSIZ(20)),
184 dump_register(GTXFIFOSIZ(21)),
185 dump_register(GTXFIFOSIZ(22)),
186 dump_register(GTXFIFOSIZ(23)),
187 dump_register(GTXFIFOSIZ(24)),
188 dump_register(GTXFIFOSIZ(25)),
189 dump_register(GTXFIFOSIZ(26)),
190 dump_register(GTXFIFOSIZ(27)),
191 dump_register(GTXFIFOSIZ(28)),
192 dump_register(GTXFIFOSIZ(29)),
193 dump_register(GTXFIFOSIZ(30)),
194 dump_register(GTXFIFOSIZ(31)),
195
196 dump_register(GRXFIFOSIZ(0)),
197 dump_register(GRXFIFOSIZ(1)),
198 dump_register(GRXFIFOSIZ(2)),
199 dump_register(GRXFIFOSIZ(3)),
200 dump_register(GRXFIFOSIZ(4)),
201 dump_register(GRXFIFOSIZ(5)),
202 dump_register(GRXFIFOSIZ(6)),
203 dump_register(GRXFIFOSIZ(7)),
204 dump_register(GRXFIFOSIZ(8)),
205 dump_register(GRXFIFOSIZ(9)),
206 dump_register(GRXFIFOSIZ(10)),
207 dump_register(GRXFIFOSIZ(11)),
208 dump_register(GRXFIFOSIZ(12)),
209 dump_register(GRXFIFOSIZ(13)),
210 dump_register(GRXFIFOSIZ(14)),
211 dump_register(GRXFIFOSIZ(15)),
212 dump_register(GRXFIFOSIZ(16)),
213 dump_register(GRXFIFOSIZ(17)),
214 dump_register(GRXFIFOSIZ(18)),
215 dump_register(GRXFIFOSIZ(19)),
216 dump_register(GRXFIFOSIZ(20)),
217 dump_register(GRXFIFOSIZ(21)),
218 dump_register(GRXFIFOSIZ(22)),
219 dump_register(GRXFIFOSIZ(23)),
220 dump_register(GRXFIFOSIZ(24)),
221 dump_register(GRXFIFOSIZ(25)),
222 dump_register(GRXFIFOSIZ(26)),
223 dump_register(GRXFIFOSIZ(27)),
224 dump_register(GRXFIFOSIZ(28)),
225 dump_register(GRXFIFOSIZ(29)),
226 dump_register(GRXFIFOSIZ(30)),
227 dump_register(GRXFIFOSIZ(31)),
228
229 dump_register(GEVNTADRLO(0)),
230 dump_register(GEVNTADRHI(0)),
231 dump_register(GEVNTSIZ(0)),
232 dump_register(GEVNTCOUNT(0)),
233
234 dump_register(GHWPARAMS8),
235 dump_register(GUCTL3),
236 dump_register(GFLADJ),
237 dump_register(DCFG),
238 dump_register(DCTL),
239 dump_register(DEVTEN),
240 dump_register(DSTS),
241 dump_register(DGCMDPAR),
242 dump_register(DGCMD),
243 dump_register(DALEPENA),
244
245 dump_ep_register_set(0),
246 dump_ep_register_set(1),
247 dump_ep_register_set(2),
248 dump_ep_register_set(3),
249 dump_ep_register_set(4),
250 dump_ep_register_set(5),
251 dump_ep_register_set(6),
252 dump_ep_register_set(7),
253 dump_ep_register_set(8),
254 dump_ep_register_set(9),
255 dump_ep_register_set(10),
256 dump_ep_register_set(11),
257 dump_ep_register_set(12),
258 dump_ep_register_set(13),
259 dump_ep_register_set(14),
260 dump_ep_register_set(15),
261 dump_ep_register_set(16),
262 dump_ep_register_set(17),
263 dump_ep_register_set(18),
264 dump_ep_register_set(19),
265 dump_ep_register_set(20),
266 dump_ep_register_set(21),
267 dump_ep_register_set(22),
268 dump_ep_register_set(23),
269 dump_ep_register_set(24),
270 dump_ep_register_set(25),
271 dump_ep_register_set(26),
272 dump_ep_register_set(27),
273 dump_ep_register_set(28),
274 dump_ep_register_set(29),
275 dump_ep_register_set(30),
276 dump_ep_register_set(31),
277
278 dump_register(OCFG),
279 dump_register(OCTL),
280 dump_register(OEVT),
281 dump_register(OEVTEN),
282 dump_register(OSTS),
283};
284
285static void dwc3_host_lsp(struct seq_file *s)
286{
287 struct dwc3 *dwc = s->private;
288 bool dbc_enabled;
289 u32 sel;
290 u32 reg;
291 u32 val;
292
293 dbc_enabled = !!(dwc->hwparams.hwparams1 & DWC3_GHWPARAMS1_ENDBC);
294
295 sel = dwc->dbg_lsp_select;
296 if (sel == DWC3_LSP_MUX_UNSELECTED) {
297 seq_puts(s, "Write LSP selection to print for host\n");
298 return;
299 }
300
301 reg = DWC3_GDBGLSPMUX_HOSTSELECT(sel);
302
303 dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg);
304 val = dwc3_readl(dwc->regs, DWC3_GDBGLSP);
305 seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", sel, val);
306
307 if (dbc_enabled && sel < 256) {
308 reg |= DWC3_GDBGLSPMUX_ENDBC;
309 dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg);
310 val = dwc3_readl(dwc->regs, DWC3_GDBGLSP);
311 seq_printf(s, "GDBGLSP_DBC[%d] = 0x%08x\n", sel, val);
312 }
313}
314
315static void dwc3_gadget_lsp(struct seq_file *s)
316{
317 struct dwc3 *dwc = s->private;
318 int i;
319 u32 reg;
320
321 for (i = 0; i < 16; i++) {
322 reg = DWC3_GDBGLSPMUX_DEVSELECT(i);
323 dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg);
324 reg = dwc3_readl(dwc->regs, DWC3_GDBGLSP);
325 seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", i, reg);
326 }
327}
328
329static int dwc3_lsp_show(struct seq_file *s, void *unused)
330{
331 struct dwc3 *dwc = s->private;
332 unsigned int current_mode;
333 unsigned long flags;
334 u32 reg;
335 int ret;
336
337 ret = pm_runtime_resume_and_get(dwc->dev);
338 if (ret < 0)
339 return ret;
340
341 spin_lock_irqsave(&dwc->lock, flags);
342 reg = dwc3_readl(dwc->regs, DWC3_GSTS);
343 current_mode = DWC3_GSTS_CURMOD(reg);
344
345 switch (current_mode) {
346 case DWC3_GSTS_CURMOD_HOST:
347 dwc3_host_lsp(s);
348 break;
349 case DWC3_GSTS_CURMOD_DEVICE:
350 dwc3_gadget_lsp(s);
351 break;
352 default:
353 seq_puts(s, "Mode is unknown, no LSP register printed\n");
354 break;
355 }
356 spin_unlock_irqrestore(&dwc->lock, flags);
357
358 pm_runtime_put_sync(dwc->dev);
359
360 return 0;
361}
362
363static int dwc3_lsp_open(struct inode *inode, struct file *file)
364{
365 return single_open(file, dwc3_lsp_show, inode->i_private);
366}
367
368static ssize_t dwc3_lsp_write(struct file *file, const char __user *ubuf,
369 size_t count, loff_t *ppos)
370{
371 struct seq_file *s = file->private_data;
372 struct dwc3 *dwc = s->private;
373 unsigned long flags;
374 char buf[32] = { 0 };
375 u32 sel;
376 int ret;
377
378 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
379 return -EFAULT;
380
381 ret = kstrtouint(buf, 0, &sel);
382 if (ret)
383 return ret;
384
385 spin_lock_irqsave(&dwc->lock, flags);
386 dwc->dbg_lsp_select = sel;
387 spin_unlock_irqrestore(&dwc->lock, flags);
388
389 return count;
390}
391
392static const struct file_operations dwc3_lsp_fops = {
393 .open = dwc3_lsp_open,
394 .write = dwc3_lsp_write,
395 .read = seq_read,
396 .llseek = seq_lseek,
397 .release = single_release,
398};
399
400static int dwc3_mode_show(struct seq_file *s, void *unused)
401{
402 struct dwc3 *dwc = s->private;
403 unsigned long flags;
404 u32 reg;
405 int ret;
406
407 ret = pm_runtime_resume_and_get(dwc->dev);
408 if (ret < 0)
409 return ret;
410
411 spin_lock_irqsave(&dwc->lock, flags);
412 reg = dwc3_readl(dwc->regs, DWC3_GCTL);
413 spin_unlock_irqrestore(&dwc->lock, flags);
414
415 switch (DWC3_GCTL_PRTCAP(reg)) {
416 case DWC3_GCTL_PRTCAP_HOST:
417 seq_puts(s, "host\n");
418 break;
419 case DWC3_GCTL_PRTCAP_DEVICE:
420 seq_puts(s, "device\n");
421 break;
422 case DWC3_GCTL_PRTCAP_OTG:
423 seq_puts(s, "otg\n");
424 break;
425 default:
426 seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
427 }
428
429 pm_runtime_put_sync(dwc->dev);
430
431 return 0;
432}
433
434static int dwc3_mode_open(struct inode *inode, struct file *file)
435{
436 return single_open(file, dwc3_mode_show, inode->i_private);
437}
438
439static ssize_t dwc3_mode_write(struct file *file,
440 const char __user *ubuf, size_t count, loff_t *ppos)
441{
442 struct seq_file *s = file->private_data;
443 struct dwc3 *dwc = s->private;
444 u32 mode = 0;
445 char buf[32];
446
447 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
448 return -EFAULT;
449
450 if (dwc->dr_mode != USB_DR_MODE_OTG)
451 return count;
452
453 if (!strncmp(buf, "host", 4))
454 mode = DWC3_GCTL_PRTCAP_HOST;
455
456 if (!strncmp(buf, "device", 6))
457 mode = DWC3_GCTL_PRTCAP_DEVICE;
458
459 if (!strncmp(buf, "otg", 3))
460 mode = DWC3_GCTL_PRTCAP_OTG;
461
462 dwc3_set_mode(dwc, mode);
463
464 return count;
465}
466
467static const struct file_operations dwc3_mode_fops = {
468 .open = dwc3_mode_open,
469 .write = dwc3_mode_write,
470 .read = seq_read,
471 .llseek = seq_lseek,
472 .release = single_release,
473};
474
475static int dwc3_testmode_show(struct seq_file *s, void *unused)
476{
477 struct dwc3 *dwc = s->private;
478 unsigned long flags;
479 u32 reg;
480 int ret;
481
482 ret = pm_runtime_resume_and_get(dwc->dev);
483 if (ret < 0)
484 return ret;
485
486 spin_lock_irqsave(&dwc->lock, flags);
487 reg = dwc3_readl(dwc->regs, DWC3_DCTL);
488 reg &= DWC3_DCTL_TSTCTRL_MASK;
489 reg >>= 1;
490 spin_unlock_irqrestore(&dwc->lock, flags);
491
492 switch (reg) {
493 case 0:
494 seq_puts(s, "no test\n");
495 break;
496 case USB_TEST_J:
497 seq_puts(s, "test_j\n");
498 break;
499 case USB_TEST_K:
500 seq_puts(s, "test_k\n");
501 break;
502 case USB_TEST_SE0_NAK:
503 seq_puts(s, "test_se0_nak\n");
504 break;
505 case USB_TEST_PACKET:
506 seq_puts(s, "test_packet\n");
507 break;
508 case USB_TEST_FORCE_ENABLE:
509 seq_puts(s, "test_force_enable\n");
510 break;
511 default:
512 seq_printf(s, "UNKNOWN %d\n", reg);
513 }
514
515 pm_runtime_put_sync(dwc->dev);
516
517 return 0;
518}
519
520static int dwc3_testmode_open(struct inode *inode, struct file *file)
521{
522 return single_open(file, dwc3_testmode_show, inode->i_private);
523}
524
525static ssize_t dwc3_testmode_write(struct file *file,
526 const char __user *ubuf, size_t count, loff_t *ppos)
527{
528 struct seq_file *s = file->private_data;
529 struct dwc3 *dwc = s->private;
530 unsigned long flags;
531 u32 testmode = 0;
532 char buf[32];
533 int ret;
534
535 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
536 return -EFAULT;
537
538 if (!strncmp(buf, "test_j", 6))
539 testmode = USB_TEST_J;
540 else if (!strncmp(buf, "test_k", 6))
541 testmode = USB_TEST_K;
542 else if (!strncmp(buf, "test_se0_nak", 12))
543 testmode = USB_TEST_SE0_NAK;
544 else if (!strncmp(buf, "test_packet", 11))
545 testmode = USB_TEST_PACKET;
546 else if (!strncmp(buf, "test_force_enable", 17))
547 testmode = USB_TEST_FORCE_ENABLE;
548 else
549 testmode = 0;
550
551 ret = pm_runtime_resume_and_get(dwc->dev);
552 if (ret < 0)
553 return ret;
554
555 spin_lock_irqsave(&dwc->lock, flags);
556 dwc3_gadget_set_test_mode(dwc, testmode);
557 spin_unlock_irqrestore(&dwc->lock, flags);
558
559 pm_runtime_put_sync(dwc->dev);
560
561 return count;
562}
563
564static const struct file_operations dwc3_testmode_fops = {
565 .open = dwc3_testmode_open,
566 .write = dwc3_testmode_write,
567 .read = seq_read,
568 .llseek = seq_lseek,
569 .release = single_release,
570};
571
572static int dwc3_link_state_show(struct seq_file *s, void *unused)
573{
574 struct dwc3 *dwc = s->private;
575 unsigned long flags;
576 enum dwc3_link_state state;
577 u32 reg;
578 u8 speed;
579 int ret;
580
581 ret = pm_runtime_resume_and_get(dwc->dev);
582 if (ret < 0)
583 return ret;
584
585 spin_lock_irqsave(&dwc->lock, flags);
586 reg = dwc3_readl(dwc->regs, DWC3_GSTS);
587 if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) {
588 seq_puts(s, "Not available\n");
589 spin_unlock_irqrestore(&dwc->lock, flags);
590 pm_runtime_put_sync(dwc->dev);
591 return 0;
592 }
593
594 reg = dwc3_readl(dwc->regs, DWC3_DSTS);
595 state = DWC3_DSTS_USBLNKST(reg);
596 speed = reg & DWC3_DSTS_CONNECTSPD;
597
598 seq_printf(s, "%s\n", (speed >= DWC3_DSTS_SUPERSPEED) ?
599 dwc3_gadget_link_string(state) :
600 dwc3_gadget_hs_link_string(state));
601 spin_unlock_irqrestore(&dwc->lock, flags);
602
603 pm_runtime_put_sync(dwc->dev);
604
605 return 0;
606}
607
608static int dwc3_link_state_open(struct inode *inode, struct file *file)
609{
610 return single_open(file, dwc3_link_state_show, inode->i_private);
611}
612
613static ssize_t dwc3_link_state_write(struct file *file,
614 const char __user *ubuf, size_t count, loff_t *ppos)
615{
616 struct seq_file *s = file->private_data;
617 struct dwc3 *dwc = s->private;
618 unsigned long flags;
619 enum dwc3_link_state state = 0;
620 char buf[32];
621 u32 reg;
622 u8 speed;
623 int ret;
624
625 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
626 return -EFAULT;
627
628 if (!strncmp(buf, "SS.Disabled", 11))
629 state = DWC3_LINK_STATE_SS_DIS;
630 else if (!strncmp(buf, "Rx.Detect", 9))
631 state = DWC3_LINK_STATE_RX_DET;
632 else if (!strncmp(buf, "SS.Inactive", 11))
633 state = DWC3_LINK_STATE_SS_INACT;
634 else if (!strncmp(buf, "Recovery", 8))
635 state = DWC3_LINK_STATE_RECOV;
636 else if (!strncmp(buf, "Compliance", 10))
637 state = DWC3_LINK_STATE_CMPLY;
638 else if (!strncmp(buf, "Loopback", 8))
639 state = DWC3_LINK_STATE_LPBK;
640 else
641 return -EINVAL;
642
643 ret = pm_runtime_resume_and_get(dwc->dev);
644 if (ret < 0)
645 return ret;
646
647 spin_lock_irqsave(&dwc->lock, flags);
648 reg = dwc3_readl(dwc->regs, DWC3_GSTS);
649 if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) {
650 spin_unlock_irqrestore(&dwc->lock, flags);
651 pm_runtime_put_sync(dwc->dev);
652 return -EINVAL;
653 }
654
655 reg = dwc3_readl(dwc->regs, DWC3_DSTS);
656 speed = reg & DWC3_DSTS_CONNECTSPD;
657
658 if (speed < DWC3_DSTS_SUPERSPEED &&
659 state != DWC3_LINK_STATE_RECOV) {
660 spin_unlock_irqrestore(&dwc->lock, flags);
661 pm_runtime_put_sync(dwc->dev);
662 return -EINVAL;
663 }
664
665 dwc3_gadget_set_link_state(dwc, state);
666 spin_unlock_irqrestore(&dwc->lock, flags);
667
668 pm_runtime_put_sync(dwc->dev);
669
670 return count;
671}
672
673static const struct file_operations dwc3_link_state_fops = {
674 .open = dwc3_link_state_open,
675 .write = dwc3_link_state_write,
676 .read = seq_read,
677 .llseek = seq_lseek,
678 .release = single_release,
679};
680
681struct dwc3_ep_file_map {
682 const char name[25];
683 const struct file_operations *const fops;
684};
685
686static int dwc3_tx_fifo_size_show(struct seq_file *s, void *unused)
687{
688 struct dwc3_ep *dep = s->private;
689 struct dwc3 *dwc = dep->dwc;
690 unsigned long flags;
691 u32 mdwidth;
692 u32 val;
693 int ret;
694
695 ret = pm_runtime_resume_and_get(dwc->dev);
696 if (ret < 0)
697 return ret;
698
699 spin_lock_irqsave(&dwc->lock, flags);
700 val = dwc3_core_fifo_space(dep, DWC3_TXFIFO);
701
702 /* Convert to bytes */
703 mdwidth = dwc3_mdwidth(dwc);
704
705 val *= mdwidth;
706 val >>= 3;
707 seq_printf(s, "%u\n", val);
708 spin_unlock_irqrestore(&dwc->lock, flags);
709
710 pm_runtime_put_sync(dwc->dev);
711
712 return 0;
713}
714
715static int dwc3_rx_fifo_size_show(struct seq_file *s, void *unused)
716{
717 struct dwc3_ep *dep = s->private;
718 struct dwc3 *dwc = dep->dwc;
719 unsigned long flags;
720 u32 mdwidth;
721 u32 val;
722 int ret;
723
724 ret = pm_runtime_resume_and_get(dwc->dev);
725 if (ret < 0)
726 return ret;
727
728 spin_lock_irqsave(&dwc->lock, flags);
729 val = dwc3_core_fifo_space(dep, DWC3_RXFIFO);
730
731 /* Convert to bytes */
732 mdwidth = dwc3_mdwidth(dwc);
733
734 val *= mdwidth;
735 val >>= 3;
736 seq_printf(s, "%u\n", val);
737 spin_unlock_irqrestore(&dwc->lock, flags);
738
739 pm_runtime_put_sync(dwc->dev);
740
741 return 0;
742}
743
744static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused)
745{
746 struct dwc3_ep *dep = s->private;
747 struct dwc3 *dwc = dep->dwc;
748 unsigned long flags;
749 u32 val;
750 int ret;
751
752 ret = pm_runtime_resume_and_get(dwc->dev);
753 if (ret < 0)
754 return ret;
755
756 spin_lock_irqsave(&dwc->lock, flags);
757 val = dwc3_core_fifo_space(dep, DWC3_TXREQQ);
758 seq_printf(s, "%u\n", val);
759 spin_unlock_irqrestore(&dwc->lock, flags);
760
761 pm_runtime_put_sync(dwc->dev);
762
763 return 0;
764}
765
766static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused)
767{
768 struct dwc3_ep *dep = s->private;
769 struct dwc3 *dwc = dep->dwc;
770 unsigned long flags;
771 u32 val;
772 int ret;
773
774 ret = pm_runtime_resume_and_get(dwc->dev);
775 if (ret < 0)
776 return ret;
777
778 spin_lock_irqsave(&dwc->lock, flags);
779 val = dwc3_core_fifo_space(dep, DWC3_RXREQQ);
780 seq_printf(s, "%u\n", val);
781 spin_unlock_irqrestore(&dwc->lock, flags);
782
783 pm_runtime_put_sync(dwc->dev);
784
785 return 0;
786}
787
788static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused)
789{
790 struct dwc3_ep *dep = s->private;
791 struct dwc3 *dwc = dep->dwc;
792 unsigned long flags;
793 u32 val;
794 int ret;
795
796 ret = pm_runtime_resume_and_get(dwc->dev);
797 if (ret < 0)
798 return ret;
799
800 spin_lock_irqsave(&dwc->lock, flags);
801 val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ);
802 seq_printf(s, "%u\n", val);
803 spin_unlock_irqrestore(&dwc->lock, flags);
804
805 pm_runtime_put_sync(dwc->dev);
806
807 return 0;
808}
809
810static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused)
811{
812 struct dwc3_ep *dep = s->private;
813 struct dwc3 *dwc = dep->dwc;
814 unsigned long flags;
815 u32 val;
816 int ret;
817
818 ret = pm_runtime_resume_and_get(dwc->dev);
819 if (ret < 0)
820 return ret;
821
822 spin_lock_irqsave(&dwc->lock, flags);
823 val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ);
824 seq_printf(s, "%u\n", val);
825 spin_unlock_irqrestore(&dwc->lock, flags);
826
827 pm_runtime_put_sync(dwc->dev);
828
829 return 0;
830}
831
832static int dwc3_event_queue_show(struct seq_file *s, void *unused)
833{
834 struct dwc3_ep *dep = s->private;
835 struct dwc3 *dwc = dep->dwc;
836 unsigned long flags;
837 u32 val;
838 int ret;
839
840 ret = pm_runtime_resume_and_get(dwc->dev);
841 if (ret < 0)
842 return ret;
843
844 spin_lock_irqsave(&dwc->lock, flags);
845 val = dwc3_core_fifo_space(dep, DWC3_EVENTQ);
846 seq_printf(s, "%u\n", val);
847 spin_unlock_irqrestore(&dwc->lock, flags);
848
849 pm_runtime_put_sync(dwc->dev);
850
851 return 0;
852}
853
854static int dwc3_transfer_type_show(struct seq_file *s, void *unused)
855{
856 struct dwc3_ep *dep = s->private;
857 struct dwc3 *dwc = dep->dwc;
858 unsigned long flags;
859
860 spin_lock_irqsave(&dwc->lock, flags);
861 if (!(dep->flags & DWC3_EP_ENABLED) || !dep->endpoint.desc) {
862 seq_puts(s, "--\n");
863 goto out;
864 }
865
866 switch (usb_endpoint_type(dep->endpoint.desc)) {
867 case USB_ENDPOINT_XFER_CONTROL:
868 seq_puts(s, "control\n");
869 break;
870 case USB_ENDPOINT_XFER_ISOC:
871 seq_puts(s, "isochronous\n");
872 break;
873 case USB_ENDPOINT_XFER_BULK:
874 seq_puts(s, "bulk\n");
875 break;
876 case USB_ENDPOINT_XFER_INT:
877 seq_puts(s, "interrupt\n");
878 break;
879 default:
880 seq_puts(s, "--\n");
881 }
882
883out:
884 spin_unlock_irqrestore(&dwc->lock, flags);
885
886 return 0;
887}
888
889static int dwc3_trb_ring_show(struct seq_file *s, void *unused)
890{
891 struct dwc3_ep *dep = s->private;
892 struct dwc3 *dwc = dep->dwc;
893 unsigned long flags;
894 int i;
895 int ret;
896
897 ret = pm_runtime_resume_and_get(dwc->dev);
898 if (ret < 0)
899 return ret;
900
901 spin_lock_irqsave(&dwc->lock, flags);
902 if (dep->number <= 1) {
903 seq_puts(s, "--\n");
904 goto out;
905 }
906
907 seq_puts(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
908
909 for (i = 0; i < DWC3_TRB_NUM; i++) {
910 struct dwc3_trb *trb = &dep->trb_pool[i];
911 unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl);
912
913 seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n",
914 trb->bph, trb->bpl, trb->size,
915 dwc3_trb_type_string(type),
916 !!(trb->ctrl & DWC3_TRB_CTRL_IOC),
917 !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI),
918 !!(trb->ctrl & DWC3_TRB_CTRL_CSP),
919 !!(trb->ctrl & DWC3_TRB_CTRL_CHN),
920 !!(trb->ctrl & DWC3_TRB_CTRL_LST),
921 !!(trb->ctrl & DWC3_TRB_CTRL_HWO),
922 dep->trb_enqueue == i ? 'E' : ' ',
923 dep->trb_dequeue == i ? 'D' : ' ');
924 }
925
926out:
927 spin_unlock_irqrestore(&dwc->lock, flags);
928
929 pm_runtime_put_sync(dwc->dev);
930
931 return 0;
932}
933
934static int dwc3_ep_info_register_show(struct seq_file *s, void *unused)
935{
936 struct dwc3_ep *dep = s->private;
937 struct dwc3 *dwc = dep->dwc;
938 unsigned long flags;
939 u64 ep_info;
940 u32 lower_32_bits;
941 u32 upper_32_bits;
942 u32 reg;
943 int ret;
944
945 ret = pm_runtime_resume_and_get(dwc->dev);
946 if (ret < 0)
947 return ret;
948
949 spin_lock_irqsave(&dwc->lock, flags);
950 reg = DWC3_GDBGLSPMUX_EPSELECT(dep->number);
951 dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg);
952
953 lower_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO0);
954 upper_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO1);
955
956 ep_info = ((u64)upper_32_bits << 32) | lower_32_bits;
957 seq_printf(s, "0x%016llx\n", ep_info);
958 spin_unlock_irqrestore(&dwc->lock, flags);
959
960 pm_runtime_put_sync(dwc->dev);
961
962 return 0;
963}
964
965DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_size);
966DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_size);
967DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue);
968DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue);
969DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue);
970DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue);
971DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue);
972DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type);
973DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring);
974DEFINE_SHOW_ATTRIBUTE(dwc3_ep_info_register);
975
976static const struct dwc3_ep_file_map dwc3_ep_file_map[] = {
977 { "tx_fifo_size", &dwc3_tx_fifo_size_fops, },
978 { "rx_fifo_size", &dwc3_rx_fifo_size_fops, },
979 { "tx_request_queue", &dwc3_tx_request_queue_fops, },
980 { "rx_request_queue", &dwc3_rx_request_queue_fops, },
981 { "rx_info_queue", &dwc3_rx_info_queue_fops, },
982 { "descriptor_fetch_queue", &dwc3_descriptor_fetch_queue_fops, },
983 { "event_queue", &dwc3_event_queue_fops, },
984 { "transfer_type", &dwc3_transfer_type_fops, },
985 { "trb_ring", &dwc3_trb_ring_fops, },
986 { "GDBGEPINFO", &dwc3_ep_info_register_fops, },
987};
988
989void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep)
990{
991 struct dentry *dir;
992 int i;
993
994 dir = debugfs_create_dir(dep->name, dep->dwc->debug_root);
995 for (i = 0; i < ARRAY_SIZE(dwc3_ep_file_map); i++) {
996 const struct file_operations *fops = dwc3_ep_file_map[i].fops;
997 const char *name = dwc3_ep_file_map[i].name;
998
999 debugfs_create_file(name, 0444, dir, dep, fops);
1000 }
1001}
1002
1003void dwc3_debugfs_remove_endpoint_dir(struct dwc3_ep *dep)
1004{
1005 debugfs_lookup_and_remove(dep->name, dep->dwc->debug_root);
1006}
1007
1008void dwc3_debugfs_init(struct dwc3 *dwc)
1009{
1010 struct dentry *root;
1011
1012 dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
1013 if (!dwc->regset)
1014 return;
1015
1016 dwc->dbg_lsp_select = DWC3_LSP_MUX_UNSELECTED;
1017
1018 dwc->regset->regs = dwc3_regs;
1019 dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
1020 dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START;
1021 dwc->regset->dev = dwc->dev;
1022
1023 root = debugfs_create_dir(dev_name(dwc->dev), usb_debug_root);
1024 dwc->debug_root = root;
1025 debugfs_create_regset32("regdump", 0444, root, dwc->regset);
1026 debugfs_create_file("lsp_dump", 0644, root, dwc, &dwc3_lsp_fops);
1027
1028 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE))
1029 debugfs_create_file("mode", 0644, root, dwc,
1030 &dwc3_mode_fops);
1031
1032 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
1033 IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
1034 debugfs_create_file("testmode", 0644, root, dwc,
1035 &dwc3_testmode_fops);
1036 debugfs_create_file("link_state", 0644, root, dwc,
1037 &dwc3_link_state_fops);
1038 }
1039}
1040
1041void dwc3_debugfs_exit(struct dwc3 *dwc)
1042{
1043 debugfs_lookup_and_remove(dev_name(dwc->dev), usb_debug_root);
1044 kfree(dwc->regset);
1045}
1/**
2 * debugfs.c - DesignWare USB3 DRD Controller DebugFS file
3 *
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
5 *
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 of
11 * the License as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19#include <linux/kernel.h>
20#include <linux/slab.h>
21#include <linux/ptrace.h>
22#include <linux/types.h>
23#include <linux/spinlock.h>
24#include <linux/debugfs.h>
25#include <linux/seq_file.h>
26#include <linux/delay.h>
27#include <linux/uaccess.h>
28
29#include <linux/usb/ch9.h>
30
31#include "core.h"
32#include "gadget.h"
33#include "io.h"
34#include "debug.h"
35
36#define dump_register(nm) \
37{ \
38 .name = __stringify(nm), \
39 .offset = DWC3_ ##nm, \
40}
41
42#define dump_ep_register_set(n) \
43 { \
44 .name = "DEPCMDPAR2("__stringify(n)")", \
45 .offset = DWC3_DEP_BASE(n) + \
46 DWC3_DEPCMDPAR2, \
47 }, \
48 { \
49 .name = "DEPCMDPAR1("__stringify(n)")", \
50 .offset = DWC3_DEP_BASE(n) + \
51 DWC3_DEPCMDPAR1, \
52 }, \
53 { \
54 .name = "DEPCMDPAR0("__stringify(n)")", \
55 .offset = DWC3_DEP_BASE(n) + \
56 DWC3_DEPCMDPAR0, \
57 }, \
58 { \
59 .name = "DEPCMD("__stringify(n)")", \
60 .offset = DWC3_DEP_BASE(n) + \
61 DWC3_DEPCMD, \
62 }
63
64
65static const struct debugfs_reg32 dwc3_regs[] = {
66 dump_register(GSBUSCFG0),
67 dump_register(GSBUSCFG1),
68 dump_register(GTXTHRCFG),
69 dump_register(GRXTHRCFG),
70 dump_register(GCTL),
71 dump_register(GEVTEN),
72 dump_register(GSTS),
73 dump_register(GUCTL1),
74 dump_register(GSNPSID),
75 dump_register(GGPIO),
76 dump_register(GUID),
77 dump_register(GUCTL),
78 dump_register(GBUSERRADDR0),
79 dump_register(GBUSERRADDR1),
80 dump_register(GPRTBIMAP0),
81 dump_register(GPRTBIMAP1),
82 dump_register(GHWPARAMS0),
83 dump_register(GHWPARAMS1),
84 dump_register(GHWPARAMS2),
85 dump_register(GHWPARAMS3),
86 dump_register(GHWPARAMS4),
87 dump_register(GHWPARAMS5),
88 dump_register(GHWPARAMS6),
89 dump_register(GHWPARAMS7),
90 dump_register(GDBGFIFOSPACE),
91 dump_register(GDBGLTSSM),
92 dump_register(GPRTBIMAP_HS0),
93 dump_register(GPRTBIMAP_HS1),
94 dump_register(GPRTBIMAP_FS0),
95 dump_register(GPRTBIMAP_FS1),
96
97 dump_register(GUSB2PHYCFG(0)),
98 dump_register(GUSB2PHYCFG(1)),
99 dump_register(GUSB2PHYCFG(2)),
100 dump_register(GUSB2PHYCFG(3)),
101 dump_register(GUSB2PHYCFG(4)),
102 dump_register(GUSB2PHYCFG(5)),
103 dump_register(GUSB2PHYCFG(6)),
104 dump_register(GUSB2PHYCFG(7)),
105 dump_register(GUSB2PHYCFG(8)),
106 dump_register(GUSB2PHYCFG(9)),
107 dump_register(GUSB2PHYCFG(10)),
108 dump_register(GUSB2PHYCFG(11)),
109 dump_register(GUSB2PHYCFG(12)),
110 dump_register(GUSB2PHYCFG(13)),
111 dump_register(GUSB2PHYCFG(14)),
112 dump_register(GUSB2PHYCFG(15)),
113
114 dump_register(GUSB2I2CCTL(0)),
115 dump_register(GUSB2I2CCTL(1)),
116 dump_register(GUSB2I2CCTL(2)),
117 dump_register(GUSB2I2CCTL(3)),
118 dump_register(GUSB2I2CCTL(4)),
119 dump_register(GUSB2I2CCTL(5)),
120 dump_register(GUSB2I2CCTL(6)),
121 dump_register(GUSB2I2CCTL(7)),
122 dump_register(GUSB2I2CCTL(8)),
123 dump_register(GUSB2I2CCTL(9)),
124 dump_register(GUSB2I2CCTL(10)),
125 dump_register(GUSB2I2CCTL(11)),
126 dump_register(GUSB2I2CCTL(12)),
127 dump_register(GUSB2I2CCTL(13)),
128 dump_register(GUSB2I2CCTL(14)),
129 dump_register(GUSB2I2CCTL(15)),
130
131 dump_register(GUSB2PHYACC(0)),
132 dump_register(GUSB2PHYACC(1)),
133 dump_register(GUSB2PHYACC(2)),
134 dump_register(GUSB2PHYACC(3)),
135 dump_register(GUSB2PHYACC(4)),
136 dump_register(GUSB2PHYACC(5)),
137 dump_register(GUSB2PHYACC(6)),
138 dump_register(GUSB2PHYACC(7)),
139 dump_register(GUSB2PHYACC(8)),
140 dump_register(GUSB2PHYACC(9)),
141 dump_register(GUSB2PHYACC(10)),
142 dump_register(GUSB2PHYACC(11)),
143 dump_register(GUSB2PHYACC(12)),
144 dump_register(GUSB2PHYACC(13)),
145 dump_register(GUSB2PHYACC(14)),
146 dump_register(GUSB2PHYACC(15)),
147
148 dump_register(GUSB3PIPECTL(0)),
149 dump_register(GUSB3PIPECTL(1)),
150 dump_register(GUSB3PIPECTL(2)),
151 dump_register(GUSB3PIPECTL(3)),
152 dump_register(GUSB3PIPECTL(4)),
153 dump_register(GUSB3PIPECTL(5)),
154 dump_register(GUSB3PIPECTL(6)),
155 dump_register(GUSB3PIPECTL(7)),
156 dump_register(GUSB3PIPECTL(8)),
157 dump_register(GUSB3PIPECTL(9)),
158 dump_register(GUSB3PIPECTL(10)),
159 dump_register(GUSB3PIPECTL(11)),
160 dump_register(GUSB3PIPECTL(12)),
161 dump_register(GUSB3PIPECTL(13)),
162 dump_register(GUSB3PIPECTL(14)),
163 dump_register(GUSB3PIPECTL(15)),
164
165 dump_register(GTXFIFOSIZ(0)),
166 dump_register(GTXFIFOSIZ(1)),
167 dump_register(GTXFIFOSIZ(2)),
168 dump_register(GTXFIFOSIZ(3)),
169 dump_register(GTXFIFOSIZ(4)),
170 dump_register(GTXFIFOSIZ(5)),
171 dump_register(GTXFIFOSIZ(6)),
172 dump_register(GTXFIFOSIZ(7)),
173 dump_register(GTXFIFOSIZ(8)),
174 dump_register(GTXFIFOSIZ(9)),
175 dump_register(GTXFIFOSIZ(10)),
176 dump_register(GTXFIFOSIZ(11)),
177 dump_register(GTXFIFOSIZ(12)),
178 dump_register(GTXFIFOSIZ(13)),
179 dump_register(GTXFIFOSIZ(14)),
180 dump_register(GTXFIFOSIZ(15)),
181 dump_register(GTXFIFOSIZ(16)),
182 dump_register(GTXFIFOSIZ(17)),
183 dump_register(GTXFIFOSIZ(18)),
184 dump_register(GTXFIFOSIZ(19)),
185 dump_register(GTXFIFOSIZ(20)),
186 dump_register(GTXFIFOSIZ(21)),
187 dump_register(GTXFIFOSIZ(22)),
188 dump_register(GTXFIFOSIZ(23)),
189 dump_register(GTXFIFOSIZ(24)),
190 dump_register(GTXFIFOSIZ(25)),
191 dump_register(GTXFIFOSIZ(26)),
192 dump_register(GTXFIFOSIZ(27)),
193 dump_register(GTXFIFOSIZ(28)),
194 dump_register(GTXFIFOSIZ(29)),
195 dump_register(GTXFIFOSIZ(30)),
196 dump_register(GTXFIFOSIZ(31)),
197
198 dump_register(GRXFIFOSIZ(0)),
199 dump_register(GRXFIFOSIZ(1)),
200 dump_register(GRXFIFOSIZ(2)),
201 dump_register(GRXFIFOSIZ(3)),
202 dump_register(GRXFIFOSIZ(4)),
203 dump_register(GRXFIFOSIZ(5)),
204 dump_register(GRXFIFOSIZ(6)),
205 dump_register(GRXFIFOSIZ(7)),
206 dump_register(GRXFIFOSIZ(8)),
207 dump_register(GRXFIFOSIZ(9)),
208 dump_register(GRXFIFOSIZ(10)),
209 dump_register(GRXFIFOSIZ(11)),
210 dump_register(GRXFIFOSIZ(12)),
211 dump_register(GRXFIFOSIZ(13)),
212 dump_register(GRXFIFOSIZ(14)),
213 dump_register(GRXFIFOSIZ(15)),
214 dump_register(GRXFIFOSIZ(16)),
215 dump_register(GRXFIFOSIZ(17)),
216 dump_register(GRXFIFOSIZ(18)),
217 dump_register(GRXFIFOSIZ(19)),
218 dump_register(GRXFIFOSIZ(20)),
219 dump_register(GRXFIFOSIZ(21)),
220 dump_register(GRXFIFOSIZ(22)),
221 dump_register(GRXFIFOSIZ(23)),
222 dump_register(GRXFIFOSIZ(24)),
223 dump_register(GRXFIFOSIZ(25)),
224 dump_register(GRXFIFOSIZ(26)),
225 dump_register(GRXFIFOSIZ(27)),
226 dump_register(GRXFIFOSIZ(28)),
227 dump_register(GRXFIFOSIZ(29)),
228 dump_register(GRXFIFOSIZ(30)),
229 dump_register(GRXFIFOSIZ(31)),
230
231 dump_register(GEVNTADRLO(0)),
232 dump_register(GEVNTADRHI(0)),
233 dump_register(GEVNTSIZ(0)),
234 dump_register(GEVNTCOUNT(0)),
235
236 dump_register(GHWPARAMS8),
237 dump_register(DCFG),
238 dump_register(DCTL),
239 dump_register(DEVTEN),
240 dump_register(DSTS),
241 dump_register(DGCMDPAR),
242 dump_register(DGCMD),
243 dump_register(DALEPENA),
244
245 dump_ep_register_set(0),
246 dump_ep_register_set(1),
247 dump_ep_register_set(2),
248 dump_ep_register_set(3),
249 dump_ep_register_set(4),
250 dump_ep_register_set(5),
251 dump_ep_register_set(6),
252 dump_ep_register_set(7),
253 dump_ep_register_set(8),
254 dump_ep_register_set(9),
255 dump_ep_register_set(10),
256 dump_ep_register_set(11),
257 dump_ep_register_set(12),
258 dump_ep_register_set(13),
259 dump_ep_register_set(14),
260 dump_ep_register_set(15),
261 dump_ep_register_set(16),
262 dump_ep_register_set(17),
263 dump_ep_register_set(18),
264 dump_ep_register_set(19),
265 dump_ep_register_set(20),
266 dump_ep_register_set(21),
267 dump_ep_register_set(22),
268 dump_ep_register_set(23),
269 dump_ep_register_set(24),
270 dump_ep_register_set(25),
271 dump_ep_register_set(26),
272 dump_ep_register_set(27),
273 dump_ep_register_set(28),
274 dump_ep_register_set(29),
275 dump_ep_register_set(30),
276 dump_ep_register_set(31),
277
278 dump_register(OCFG),
279 dump_register(OCTL),
280 dump_register(OEVT),
281 dump_register(OEVTEN),
282 dump_register(OSTS),
283};
284
285static int dwc3_mode_show(struct seq_file *s, void *unused)
286{
287 struct dwc3 *dwc = s->private;
288 unsigned long flags;
289 u32 reg;
290
291 spin_lock_irqsave(&dwc->lock, flags);
292 reg = dwc3_readl(dwc->regs, DWC3_GCTL);
293 spin_unlock_irqrestore(&dwc->lock, flags);
294
295 switch (DWC3_GCTL_PRTCAP(reg)) {
296 case DWC3_GCTL_PRTCAP_HOST:
297 seq_printf(s, "host\n");
298 break;
299 case DWC3_GCTL_PRTCAP_DEVICE:
300 seq_printf(s, "device\n");
301 break;
302 case DWC3_GCTL_PRTCAP_OTG:
303 seq_printf(s, "OTG\n");
304 break;
305 default:
306 seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
307 }
308
309 return 0;
310}
311
312static int dwc3_mode_open(struct inode *inode, struct file *file)
313{
314 return single_open(file, dwc3_mode_show, inode->i_private);
315}
316
317static ssize_t dwc3_mode_write(struct file *file,
318 const char __user *ubuf, size_t count, loff_t *ppos)
319{
320 struct seq_file *s = file->private_data;
321 struct dwc3 *dwc = s->private;
322 unsigned long flags;
323 u32 mode = 0;
324 char buf[32];
325
326 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
327 return -EFAULT;
328
329 if (!strncmp(buf, "host", 4))
330 mode |= DWC3_GCTL_PRTCAP_HOST;
331
332 if (!strncmp(buf, "device", 6))
333 mode |= DWC3_GCTL_PRTCAP_DEVICE;
334
335 if (!strncmp(buf, "otg", 3))
336 mode |= DWC3_GCTL_PRTCAP_OTG;
337
338 if (mode) {
339 spin_lock_irqsave(&dwc->lock, flags);
340 dwc3_set_mode(dwc, mode);
341 spin_unlock_irqrestore(&dwc->lock, flags);
342 }
343 return count;
344}
345
346static const struct file_operations dwc3_mode_fops = {
347 .open = dwc3_mode_open,
348 .write = dwc3_mode_write,
349 .read = seq_read,
350 .llseek = seq_lseek,
351 .release = single_release,
352};
353
354static int dwc3_testmode_show(struct seq_file *s, void *unused)
355{
356 struct dwc3 *dwc = s->private;
357 unsigned long flags;
358 u32 reg;
359
360 spin_lock_irqsave(&dwc->lock, flags);
361 reg = dwc3_readl(dwc->regs, DWC3_DCTL);
362 reg &= DWC3_DCTL_TSTCTRL_MASK;
363 reg >>= 1;
364 spin_unlock_irqrestore(&dwc->lock, flags);
365
366 switch (reg) {
367 case 0:
368 seq_printf(s, "no test\n");
369 break;
370 case TEST_J:
371 seq_printf(s, "test_j\n");
372 break;
373 case TEST_K:
374 seq_printf(s, "test_k\n");
375 break;
376 case TEST_SE0_NAK:
377 seq_printf(s, "test_se0_nak\n");
378 break;
379 case TEST_PACKET:
380 seq_printf(s, "test_packet\n");
381 break;
382 case TEST_FORCE_EN:
383 seq_printf(s, "test_force_enable\n");
384 break;
385 default:
386 seq_printf(s, "UNKNOWN %d\n", reg);
387 }
388
389 return 0;
390}
391
392static int dwc3_testmode_open(struct inode *inode, struct file *file)
393{
394 return single_open(file, dwc3_testmode_show, inode->i_private);
395}
396
397static ssize_t dwc3_testmode_write(struct file *file,
398 const char __user *ubuf, size_t count, loff_t *ppos)
399{
400 struct seq_file *s = file->private_data;
401 struct dwc3 *dwc = s->private;
402 unsigned long flags;
403 u32 testmode = 0;
404 char buf[32];
405
406 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
407 return -EFAULT;
408
409 if (!strncmp(buf, "test_j", 6))
410 testmode = TEST_J;
411 else if (!strncmp(buf, "test_k", 6))
412 testmode = TEST_K;
413 else if (!strncmp(buf, "test_se0_nak", 12))
414 testmode = TEST_SE0_NAK;
415 else if (!strncmp(buf, "test_packet", 11))
416 testmode = TEST_PACKET;
417 else if (!strncmp(buf, "test_force_enable", 17))
418 testmode = TEST_FORCE_EN;
419 else
420 testmode = 0;
421
422 spin_lock_irqsave(&dwc->lock, flags);
423 dwc3_gadget_set_test_mode(dwc, testmode);
424 spin_unlock_irqrestore(&dwc->lock, flags);
425
426 return count;
427}
428
429static const struct file_operations dwc3_testmode_fops = {
430 .open = dwc3_testmode_open,
431 .write = dwc3_testmode_write,
432 .read = seq_read,
433 .llseek = seq_lseek,
434 .release = single_release,
435};
436
437static int dwc3_link_state_show(struct seq_file *s, void *unused)
438{
439 struct dwc3 *dwc = s->private;
440 unsigned long flags;
441 enum dwc3_link_state state;
442 u32 reg;
443
444 spin_lock_irqsave(&dwc->lock, flags);
445 reg = dwc3_readl(dwc->regs, DWC3_DSTS);
446 state = DWC3_DSTS_USBLNKST(reg);
447 spin_unlock_irqrestore(&dwc->lock, flags);
448
449 switch (state) {
450 case DWC3_LINK_STATE_U0:
451 seq_printf(s, "U0\n");
452 break;
453 case DWC3_LINK_STATE_U1:
454 seq_printf(s, "U1\n");
455 break;
456 case DWC3_LINK_STATE_U2:
457 seq_printf(s, "U2\n");
458 break;
459 case DWC3_LINK_STATE_U3:
460 seq_printf(s, "U3\n");
461 break;
462 case DWC3_LINK_STATE_SS_DIS:
463 seq_printf(s, "SS.Disabled\n");
464 break;
465 case DWC3_LINK_STATE_RX_DET:
466 seq_printf(s, "Rx.Detect\n");
467 break;
468 case DWC3_LINK_STATE_SS_INACT:
469 seq_printf(s, "SS.Inactive\n");
470 break;
471 case DWC3_LINK_STATE_POLL:
472 seq_printf(s, "Poll\n");
473 break;
474 case DWC3_LINK_STATE_RECOV:
475 seq_printf(s, "Recovery\n");
476 break;
477 case DWC3_LINK_STATE_HRESET:
478 seq_printf(s, "HRESET\n");
479 break;
480 case DWC3_LINK_STATE_CMPLY:
481 seq_printf(s, "Compliance\n");
482 break;
483 case DWC3_LINK_STATE_LPBK:
484 seq_printf(s, "Loopback\n");
485 break;
486 case DWC3_LINK_STATE_RESET:
487 seq_printf(s, "Reset\n");
488 break;
489 case DWC3_LINK_STATE_RESUME:
490 seq_printf(s, "Resume\n");
491 break;
492 default:
493 seq_printf(s, "UNKNOWN %d\n", state);
494 }
495
496 return 0;
497}
498
499static int dwc3_link_state_open(struct inode *inode, struct file *file)
500{
501 return single_open(file, dwc3_link_state_show, inode->i_private);
502}
503
504static ssize_t dwc3_link_state_write(struct file *file,
505 const char __user *ubuf, size_t count, loff_t *ppos)
506{
507 struct seq_file *s = file->private_data;
508 struct dwc3 *dwc = s->private;
509 unsigned long flags;
510 enum dwc3_link_state state = 0;
511 char buf[32];
512
513 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
514 return -EFAULT;
515
516 if (!strncmp(buf, "SS.Disabled", 11))
517 state = DWC3_LINK_STATE_SS_DIS;
518 else if (!strncmp(buf, "Rx.Detect", 9))
519 state = DWC3_LINK_STATE_RX_DET;
520 else if (!strncmp(buf, "SS.Inactive", 11))
521 state = DWC3_LINK_STATE_SS_INACT;
522 else if (!strncmp(buf, "Recovery", 8))
523 state = DWC3_LINK_STATE_RECOV;
524 else if (!strncmp(buf, "Compliance", 10))
525 state = DWC3_LINK_STATE_CMPLY;
526 else if (!strncmp(buf, "Loopback", 8))
527 state = DWC3_LINK_STATE_LPBK;
528 else
529 return -EINVAL;
530
531 spin_lock_irqsave(&dwc->lock, flags);
532 dwc3_gadget_set_link_state(dwc, state);
533 spin_unlock_irqrestore(&dwc->lock, flags);
534
535 return count;
536}
537
538static const struct file_operations dwc3_link_state_fops = {
539 .open = dwc3_link_state_open,
540 .write = dwc3_link_state_write,
541 .read = seq_read,
542 .llseek = seq_lseek,
543 .release = single_release,
544};
545
546struct dwc3_ep_file_map {
547 char name[25];
548 int (*show)(struct seq_file *s, void *unused);
549};
550
551static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused)
552{
553 struct dwc3_ep *dep = s->private;
554 struct dwc3 *dwc = dep->dwc;
555 unsigned long flags;
556 u32 val;
557
558 spin_lock_irqsave(&dwc->lock, flags);
559 val = dwc3_core_fifo_space(dep, DWC3_TXFIFOQ);
560 seq_printf(s, "%u\n", val);
561 spin_unlock_irqrestore(&dwc->lock, flags);
562
563 return 0;
564}
565
566static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused)
567{
568 struct dwc3_ep *dep = s->private;
569 struct dwc3 *dwc = dep->dwc;
570 unsigned long flags;
571 u32 val;
572
573 spin_lock_irqsave(&dwc->lock, flags);
574 val = dwc3_core_fifo_space(dep, DWC3_RXFIFOQ);
575 seq_printf(s, "%u\n", val);
576 spin_unlock_irqrestore(&dwc->lock, flags);
577
578 return 0;
579}
580
581static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused)
582{
583 struct dwc3_ep *dep = s->private;
584 struct dwc3 *dwc = dep->dwc;
585 unsigned long flags;
586 u32 val;
587
588 spin_lock_irqsave(&dwc->lock, flags);
589 val = dwc3_core_fifo_space(dep, DWC3_TXREQQ);
590 seq_printf(s, "%u\n", val);
591 spin_unlock_irqrestore(&dwc->lock, flags);
592
593 return 0;
594}
595
596static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused)
597{
598 struct dwc3_ep *dep = s->private;
599 struct dwc3 *dwc = dep->dwc;
600 unsigned long flags;
601 u32 val;
602
603 spin_lock_irqsave(&dwc->lock, flags);
604 val = dwc3_core_fifo_space(dep, DWC3_RXREQQ);
605 seq_printf(s, "%u\n", val);
606 spin_unlock_irqrestore(&dwc->lock, flags);
607
608 return 0;
609}
610
611static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused)
612{
613 struct dwc3_ep *dep = s->private;
614 struct dwc3 *dwc = dep->dwc;
615 unsigned long flags;
616 u32 val;
617
618 spin_lock_irqsave(&dwc->lock, flags);
619 val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ);
620 seq_printf(s, "%u\n", val);
621 spin_unlock_irqrestore(&dwc->lock, flags);
622
623 return 0;
624}
625
626static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused)
627{
628 struct dwc3_ep *dep = s->private;
629 struct dwc3 *dwc = dep->dwc;
630 unsigned long flags;
631 u32 val;
632
633 spin_lock_irqsave(&dwc->lock, flags);
634 val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ);
635 seq_printf(s, "%u\n", val);
636 spin_unlock_irqrestore(&dwc->lock, flags);
637
638 return 0;
639}
640
641static int dwc3_event_queue_show(struct seq_file *s, void *unused)
642{
643 struct dwc3_ep *dep = s->private;
644 struct dwc3 *dwc = dep->dwc;
645 unsigned long flags;
646 u32 val;
647
648 spin_lock_irqsave(&dwc->lock, flags);
649 val = dwc3_core_fifo_space(dep, DWC3_EVENTQ);
650 seq_printf(s, "%u\n", val);
651 spin_unlock_irqrestore(&dwc->lock, flags);
652
653 return 0;
654}
655
656static int dwc3_ep_transfer_type_show(struct seq_file *s, void *unused)
657{
658 struct dwc3_ep *dep = s->private;
659 struct dwc3 *dwc = dep->dwc;
660 unsigned long flags;
661
662 spin_lock_irqsave(&dwc->lock, flags);
663 if (!(dep->flags & DWC3_EP_ENABLED) ||
664 !dep->endpoint.desc) {
665 seq_printf(s, "--\n");
666 goto out;
667 }
668
669 switch (usb_endpoint_type(dep->endpoint.desc)) {
670 case USB_ENDPOINT_XFER_CONTROL:
671 seq_printf(s, "control\n");
672 break;
673 case USB_ENDPOINT_XFER_ISOC:
674 seq_printf(s, "isochronous\n");
675 break;
676 case USB_ENDPOINT_XFER_BULK:
677 seq_printf(s, "bulk\n");
678 break;
679 case USB_ENDPOINT_XFER_INT:
680 seq_printf(s, "interrupt\n");
681 break;
682 default:
683 seq_printf(s, "--\n");
684 }
685
686out:
687 spin_unlock_irqrestore(&dwc->lock, flags);
688
689 return 0;
690}
691
692static inline const char *dwc3_trb_type_string(struct dwc3_trb *trb)
693{
694 switch (DWC3_TRBCTL_TYPE(trb->ctrl)) {
695 case DWC3_TRBCTL_NORMAL:
696 return "normal";
697 case DWC3_TRBCTL_CONTROL_SETUP:
698 return "control-setup";
699 case DWC3_TRBCTL_CONTROL_STATUS2:
700 return "control-status2";
701 case DWC3_TRBCTL_CONTROL_STATUS3:
702 return "control-status3";
703 case DWC3_TRBCTL_CONTROL_DATA:
704 return "control-data";
705 case DWC3_TRBCTL_ISOCHRONOUS_FIRST:
706 return "isoc-first";
707 case DWC3_TRBCTL_ISOCHRONOUS:
708 return "isoc";
709 case DWC3_TRBCTL_LINK_TRB:
710 return "link";
711 default:
712 return "UNKNOWN";
713 }
714}
715
716static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused)
717{
718 struct dwc3_ep *dep = s->private;
719 struct dwc3 *dwc = dep->dwc;
720 unsigned long flags;
721 int i;
722
723 spin_lock_irqsave(&dwc->lock, flags);
724 if (dep->number <= 1) {
725 seq_printf(s, "--\n");
726 goto out;
727 }
728
729 seq_printf(s, "enqueue pointer %d\n", dep->trb_enqueue);
730 seq_printf(s, "dequeue pointer %d\n", dep->trb_dequeue);
731 seq_printf(s, "\n--------------------------------------------------\n\n");
732 seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
733
734 for (i = 0; i < DWC3_TRB_NUM; i++) {
735 struct dwc3_trb *trb = &dep->trb_pool[i];
736
737 seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d\n",
738 trb->bph, trb->bpl, trb->size,
739 dwc3_trb_type_string(trb),
740 !!(trb->ctrl & DWC3_TRB_CTRL_IOC),
741 !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI),
742 !!(trb->ctrl & DWC3_TRB_CTRL_CSP),
743 !!(trb->ctrl & DWC3_TRB_CTRL_CHN),
744 !!(trb->ctrl & DWC3_TRB_CTRL_LST),
745 !!(trb->ctrl & DWC3_TRB_CTRL_HWO));
746 }
747
748out:
749 spin_unlock_irqrestore(&dwc->lock, flags);
750
751 return 0;
752}
753
754static struct dwc3_ep_file_map map[] = {
755 { "tx_fifo_queue", dwc3_tx_fifo_queue_show, },
756 { "rx_fifo_queue", dwc3_rx_fifo_queue_show, },
757 { "tx_request_queue", dwc3_tx_request_queue_show, },
758 { "rx_request_queue", dwc3_rx_request_queue_show, },
759 { "rx_info_queue", dwc3_rx_info_queue_show, },
760 { "descriptor_fetch_queue", dwc3_descriptor_fetch_queue_show, },
761 { "event_queue", dwc3_event_queue_show, },
762 { "transfer_type", dwc3_ep_transfer_type_show, },
763 { "trb_ring", dwc3_ep_trb_ring_show, },
764};
765
766static int dwc3_endpoint_open(struct inode *inode, struct file *file)
767{
768 const char *file_name = file_dentry(file)->d_iname;
769 struct dwc3_ep_file_map *f_map;
770 int i;
771
772 for (i = 0; i < ARRAY_SIZE(map); i++) {
773 f_map = &map[i];
774
775 if (strcmp(f_map->name, file_name) == 0)
776 break;
777 }
778
779 return single_open(file, f_map->show, inode->i_private);
780}
781
782static const struct file_operations dwc3_endpoint_fops = {
783 .open = dwc3_endpoint_open,
784 .read = seq_read,
785 .llseek = seq_lseek,
786 .release = single_release,
787};
788
789static void dwc3_debugfs_create_endpoint_file(struct dwc3_ep *dep,
790 struct dentry *parent, int type)
791{
792 struct dentry *file;
793 struct dwc3_ep_file_map *ep_file = &map[type];
794
795 file = debugfs_create_file(ep_file->name, S_IRUGO, parent, dep,
796 &dwc3_endpoint_fops);
797}
798
799static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep,
800 struct dentry *parent)
801{
802 int i;
803
804 for (i = 0; i < ARRAY_SIZE(map); i++)
805 dwc3_debugfs_create_endpoint_file(dep, parent, i);
806}
807
808static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep,
809 struct dentry *parent)
810{
811 struct dentry *dir;
812
813 dir = debugfs_create_dir(dep->name, parent);
814 if (IS_ERR_OR_NULL(dir))
815 return;
816
817 dwc3_debugfs_create_endpoint_files(dep, dir);
818}
819
820static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc,
821 struct dentry *parent)
822{
823 int i;
824
825 for (i = 0; i < dwc->num_in_eps; i++) {
826 u8 epnum = (i << 1) | 1;
827 struct dwc3_ep *dep = dwc->eps[epnum];
828
829 if (!dep)
830 continue;
831
832 dwc3_debugfs_create_endpoint_dir(dep, parent);
833 }
834
835 for (i = 0; i < dwc->num_out_eps; i++) {
836 u8 epnum = (i << 1);
837 struct dwc3_ep *dep = dwc->eps[epnum];
838
839 if (!dep)
840 continue;
841
842 dwc3_debugfs_create_endpoint_dir(dep, parent);
843 }
844}
845
846void dwc3_debugfs_init(struct dwc3 *dwc)
847{
848 struct dentry *root;
849 struct dentry *file;
850
851 root = debugfs_create_dir(dev_name(dwc->dev), NULL);
852 if (IS_ERR_OR_NULL(root)) {
853 if (!root)
854 dev_err(dwc->dev, "Can't create debugfs root\n");
855 return;
856 }
857 dwc->root = root;
858
859 dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
860 if (!dwc->regset) {
861 debugfs_remove_recursive(root);
862 return;
863 }
864
865 dwc->regset->regs = dwc3_regs;
866 dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
867 dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START;
868
869 file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
870 if (!file)
871 dev_dbg(dwc->dev, "Can't create debugfs regdump\n");
872
873 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
874 file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
875 dwc, &dwc3_mode_fops);
876 if (!file)
877 dev_dbg(dwc->dev, "Can't create debugfs mode\n");
878 }
879
880 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
881 IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
882 file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
883 dwc, &dwc3_testmode_fops);
884 if (!file)
885 dev_dbg(dwc->dev, "Can't create debugfs testmode\n");
886
887 file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR,
888 root, dwc, &dwc3_link_state_fops);
889 if (!file)
890 dev_dbg(dwc->dev, "Can't create debugfs link_state\n");
891
892 dwc3_debugfs_create_endpoint_dirs(dwc, root);
893 }
894}
895
896void dwc3_debugfs_exit(struct dwc3 *dwc)
897{
898 debugfs_remove_recursive(dwc->root);
899 kfree(dwc->regset);
900}