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usb: dwc3: gadget: add a pointer to endpoint registers
[mirror_ubuntu-hirsute-kernel.git] / drivers / usb / dwc3 / debugfs.c
CommitLineData
72246da4
FB		 1/**
2 * debugfs.c - DesignWare USB3 DRD Controller DebugFS file
3 *
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
72246da4
FB		 5 *
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
8 *
5945f789
FB		 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.
72246da4 12 *
5945f789
FB		 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.
72246da4
FB		 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>
25b8ff68 27#include <linux/uaccess.h>
72246da4 28
080d921f
FB		 29#include <linux/usb/ch9.h>
30
72246da4
FB		 31#include "core.h"
32#include "gadget.h"
33#include "io.h"
8becf270 34#include "debug.h"
72246da4 35
72246da4
FB		 36#define dump_register(nm) \
37{ \
38 .name = __stringify(nm), \
2eb88016 39 .offset = DWC3_ ##nm, \
72246da4
FB		 40}
41
2eb88016
FB		 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
4ec0ddb1 65static const struct debugfs_reg32 dwc3_regs[] = {
72246da4
FB		 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(GSNPSID),
74 dump_register(GGPIO),
75 dump_register(GUID),
76 dump_register(GUCTL),
77 dump_register(GBUSERRADDR0),
78 dump_register(GBUSERRADDR1),
79 dump_register(GPRTBIMAP0),
80 dump_register(GPRTBIMAP1),
81 dump_register(GHWPARAMS0),
82 dump_register(GHWPARAMS1),
83 dump_register(GHWPARAMS2),
84 dump_register(GHWPARAMS3),
85 dump_register(GHWPARAMS4),
86 dump_register(GHWPARAMS5),
87 dump_register(GHWPARAMS6),
88 dump_register(GHWPARAMS7),
89 dump_register(GDBGFIFOSPACE),
90 dump_register(GDBGLTSSM),
91 dump_register(GPRTBIMAP_HS0),
92 dump_register(GPRTBIMAP_HS1),
93 dump_register(GPRTBIMAP_FS0),
94 dump_register(GPRTBIMAP_FS1),
95
96 dump_register(GUSB2PHYCFG(0)),
97 dump_register(GUSB2PHYCFG(1)),
98 dump_register(GUSB2PHYCFG(2)),
99 dump_register(GUSB2PHYCFG(3)),
100 dump_register(GUSB2PHYCFG(4)),
101 dump_register(GUSB2PHYCFG(5)),
102 dump_register(GUSB2PHYCFG(6)),
103 dump_register(GUSB2PHYCFG(7)),
104 dump_register(GUSB2PHYCFG(8)),
105 dump_register(GUSB2PHYCFG(9)),
106 dump_register(GUSB2PHYCFG(10)),
107 dump_register(GUSB2PHYCFG(11)),
108 dump_register(GUSB2PHYCFG(12)),
109 dump_register(GUSB2PHYCFG(13)),
110 dump_register(GUSB2PHYCFG(14)),
111 dump_register(GUSB2PHYCFG(15)),
112
113 dump_register(GUSB2I2CCTL(0)),
114 dump_register(GUSB2I2CCTL(1)),
115 dump_register(GUSB2I2CCTL(2)),
116 dump_register(GUSB2I2CCTL(3)),
117 dump_register(GUSB2I2CCTL(4)),
118 dump_register(GUSB2I2CCTL(5)),
119 dump_register(GUSB2I2CCTL(6)),
120 dump_register(GUSB2I2CCTL(7)),
121 dump_register(GUSB2I2CCTL(8)),
122 dump_register(GUSB2I2CCTL(9)),
123 dump_register(GUSB2I2CCTL(10)),
124 dump_register(GUSB2I2CCTL(11)),
125 dump_register(GUSB2I2CCTL(12)),
126 dump_register(GUSB2I2CCTL(13)),
127 dump_register(GUSB2I2CCTL(14)),
128 dump_register(GUSB2I2CCTL(15)),
129
130 dump_register(GUSB2PHYACC(0)),
131 dump_register(GUSB2PHYACC(1)),
132 dump_register(GUSB2PHYACC(2)),
133 dump_register(GUSB2PHYACC(3)),
134 dump_register(GUSB2PHYACC(4)),
135 dump_register(GUSB2PHYACC(5)),
136 dump_register(GUSB2PHYACC(6)),
137 dump_register(GUSB2PHYACC(7)),
138 dump_register(GUSB2PHYACC(8)),
139 dump_register(GUSB2PHYACC(9)),
140 dump_register(GUSB2PHYACC(10)),
141 dump_register(GUSB2PHYACC(11)),
142 dump_register(GUSB2PHYACC(12)),
143 dump_register(GUSB2PHYACC(13)),
144 dump_register(GUSB2PHYACC(14)),
145 dump_register(GUSB2PHYACC(15)),
146
147 dump_register(GUSB3PIPECTL(0)),
148 dump_register(GUSB3PIPECTL(1)),
149 dump_register(GUSB3PIPECTL(2)),
150 dump_register(GUSB3PIPECTL(3)),
151 dump_register(GUSB3PIPECTL(4)),
152 dump_register(GUSB3PIPECTL(5)),
153 dump_register(GUSB3PIPECTL(6)),
154 dump_register(GUSB3PIPECTL(7)),
155 dump_register(GUSB3PIPECTL(8)),
156 dump_register(GUSB3PIPECTL(9)),
157 dump_register(GUSB3PIPECTL(10)),
158 dump_register(GUSB3PIPECTL(11)),
159 dump_register(GUSB3PIPECTL(12)),
160 dump_register(GUSB3PIPECTL(13)),
161 dump_register(GUSB3PIPECTL(14)),
162 dump_register(GUSB3PIPECTL(15)),
163
164 dump_register(GTXFIFOSIZ(0)),
165 dump_register(GTXFIFOSIZ(1)),
166 dump_register(GTXFIFOSIZ(2)),
167 dump_register(GTXFIFOSIZ(3)),
168 dump_register(GTXFIFOSIZ(4)),
169 dump_register(GTXFIFOSIZ(5)),
170 dump_register(GTXFIFOSIZ(6)),
171 dump_register(GTXFIFOSIZ(7)),
172 dump_register(GTXFIFOSIZ(8)),
173 dump_register(GTXFIFOSIZ(9)),
174 dump_register(GTXFIFOSIZ(10)),
175 dump_register(GTXFIFOSIZ(11)),
176 dump_register(GTXFIFOSIZ(12)),
177 dump_register(GTXFIFOSIZ(13)),
178 dump_register(GTXFIFOSIZ(14)),
179 dump_register(GTXFIFOSIZ(15)),
180 dump_register(GTXFIFOSIZ(16)),
181 dump_register(GTXFIFOSIZ(17)),
182 dump_register(GTXFIFOSIZ(18)),
183 dump_register(GTXFIFOSIZ(19)),
184 dump_register(GTXFIFOSIZ(20)),
185 dump_register(GTXFIFOSIZ(21)),
186 dump_register(GTXFIFOSIZ(22)),
187 dump_register(GTXFIFOSIZ(23)),
188 dump_register(GTXFIFOSIZ(24)),
189 dump_register(GTXFIFOSIZ(25)),
190 dump_register(GTXFIFOSIZ(26)),
191 dump_register(GTXFIFOSIZ(27)),
192 dump_register(GTXFIFOSIZ(28)),
193 dump_register(GTXFIFOSIZ(29)),
194 dump_register(GTXFIFOSIZ(30)),
195 dump_register(GTXFIFOSIZ(31)),
196
197 dump_register(GRXFIFOSIZ(0)),
198 dump_register(GRXFIFOSIZ(1)),
199 dump_register(GRXFIFOSIZ(2)),
200 dump_register(GRXFIFOSIZ(3)),
201 dump_register(GRXFIFOSIZ(4)),
202 dump_register(GRXFIFOSIZ(5)),
203 dump_register(GRXFIFOSIZ(6)),
204 dump_register(GRXFIFOSIZ(7)),
205 dump_register(GRXFIFOSIZ(8)),
206 dump_register(GRXFIFOSIZ(9)),
207 dump_register(GRXFIFOSIZ(10)),
208 dump_register(GRXFIFOSIZ(11)),
209 dump_register(GRXFIFOSIZ(12)),
210 dump_register(GRXFIFOSIZ(13)),
211 dump_register(GRXFIFOSIZ(14)),
212 dump_register(GRXFIFOSIZ(15)),
213 dump_register(GRXFIFOSIZ(16)),
214 dump_register(GRXFIFOSIZ(17)),
215 dump_register(GRXFIFOSIZ(18)),
216 dump_register(GRXFIFOSIZ(19)),
217 dump_register(GRXFIFOSIZ(20)),
218 dump_register(GRXFIFOSIZ(21)),
219 dump_register(GRXFIFOSIZ(22)),
220 dump_register(GRXFIFOSIZ(23)),
221 dump_register(GRXFIFOSIZ(24)),
222 dump_register(GRXFIFOSIZ(25)),
223 dump_register(GRXFIFOSIZ(26)),
224 dump_register(GRXFIFOSIZ(27)),
225 dump_register(GRXFIFOSIZ(28)),
226 dump_register(GRXFIFOSIZ(29)),
227 dump_register(GRXFIFOSIZ(30)),
228 dump_register(GRXFIFOSIZ(31)),
229
230 dump_register(GEVNTADRLO(0)),
231 dump_register(GEVNTADRHI(0)),
232 dump_register(GEVNTSIZ(0)),
233 dump_register(GEVNTCOUNT(0)),
234
235 dump_register(GHWPARAMS8),
236 dump_register(DCFG),
237 dump_register(DCTL),
238 dump_register(DEVTEN),
239 dump_register(DSTS),
240 dump_register(DGCMDPAR),
241 dump_register(DGCMD),
242 dump_register(DALEPENA),
243
2eb88016
FB		 244 dump_ep_register_set(0),
245 dump_ep_register_set(1),
246 dump_ep_register_set(2),
247 dump_ep_register_set(3),
248 dump_ep_register_set(4),
249 dump_ep_register_set(5),
250 dump_ep_register_set(6),
251 dump_ep_register_set(7),
252 dump_ep_register_set(8),
253 dump_ep_register_set(9),
254 dump_ep_register_set(10),
255 dump_ep_register_set(11),
256 dump_ep_register_set(12),
257 dump_ep_register_set(13),
258 dump_ep_register_set(14),
259 dump_ep_register_set(15),
260 dump_ep_register_set(16),
261 dump_ep_register_set(17),
262 dump_ep_register_set(18),
263 dump_ep_register_set(19),
264 dump_ep_register_set(20),
265 dump_ep_register_set(21),
266 dump_ep_register_set(22),
267 dump_ep_register_set(23),
268 dump_ep_register_set(24),
269 dump_ep_register_set(25),
270 dump_ep_register_set(26),
271 dump_ep_register_set(27),
272 dump_ep_register_set(28),
273 dump_ep_register_set(29),
274 dump_ep_register_set(30),
275 dump_ep_register_set(31),
72246da4
FB		 276
277 dump_register(OCFG),
278 dump_register(OCTL),
d4436c3a 279 dump_register(OEVT),
72246da4
FB		 280 dump_register(OEVTEN),
281 dump_register(OSTS),
282};
283
0b9fe32d
FB		 284static int dwc3_mode_show(struct seq_file *s, void *unused)
285{
286 struct dwc3 *dwc = s->private;
287 unsigned long flags;
288 u32 reg;
289
290 spin_lock_irqsave(&dwc->lock, flags);
291 reg = dwc3_readl(dwc->regs, DWC3_GCTL);
292 spin_unlock_irqrestore(&dwc->lock, flags);
293
294 switch (DWC3_GCTL_PRTCAP(reg)) {
295 case DWC3_GCTL_PRTCAP_HOST:
296 seq_printf(s, "host\n");
297 break;
298 case DWC3_GCTL_PRTCAP_DEVICE:
299 seq_printf(s, "device\n");
300 break;
301 case DWC3_GCTL_PRTCAP_OTG:
302 seq_printf(s, "OTG\n");
303 break;
304 default:
305 seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
306 }
307
308 return 0;
309}
310
311static int dwc3_mode_open(struct inode *inode, struct file *file)
312{
313 return single_open(file, dwc3_mode_show, inode->i_private);
314}
315
316static ssize_t dwc3_mode_write(struct file *file,
317 const char __user *ubuf, size_t count, loff_t *ppos)
318{
319 struct seq_file *s = file->private_data;
320 struct dwc3 *dwc = s->private;
321 unsigned long flags;
3140e8cb 322 u32 mode = 0;
0b9fe32d
FB		 323 char buf[32];
324
325 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
326 return -EFAULT;
327
0b9fe32d 328 if (!strncmp(buf, "host", 4))
3140e8cb 329 mode |= DWC3_GCTL_PRTCAP_HOST;
0b9fe32d
FB		 330
331 if (!strncmp(buf, "device", 6))
3140e8cb 332 mode |= DWC3_GCTL_PRTCAP_DEVICE;
0b9fe32d
FB		 333
334 if (!strncmp(buf, "otg", 3))
3140e8cb 335 mode |= DWC3_GCTL_PRTCAP_OTG;
0b9fe32d 336
3140e8cb
SAS		 337 if (mode) {
338 spin_lock_irqsave(&dwc->lock, flags);
339 dwc3_set_mode(dwc, mode);
340 spin_unlock_irqrestore(&dwc->lock, flags);
341 }
0b9fe32d
FB		 342 return count;
343}
344
345static const struct file_operations dwc3_mode_fops = {
346 .open = dwc3_mode_open,
347 .write = dwc3_mode_write,
348 .read = seq_read,
349 .llseek = seq_lseek,
350 .release = single_release,
351};
352
080d921f
FB		 353static int dwc3_testmode_show(struct seq_file *s, void *unused)
354{
355 struct dwc3 *dwc = s->private;
356 unsigned long flags;
357 u32 reg;
358
359 spin_lock_irqsave(&dwc->lock, flags);
360 reg = dwc3_readl(dwc->regs, DWC3_DCTL);
361 reg &= DWC3_DCTL_TSTCTRL_MASK;
362 reg >>= 1;
363 spin_unlock_irqrestore(&dwc->lock, flags);
364
365 switch (reg) {
366 case 0:
367 seq_printf(s, "no test\n");
368 break;
369 case TEST_J:
370 seq_printf(s, "test_j\n");
371 break;
372 case TEST_K:
373 seq_printf(s, "test_k\n");
374 break;
375 case TEST_SE0_NAK:
376 seq_printf(s, "test_se0_nak\n");
377 break;
378 case TEST_PACKET:
379 seq_printf(s, "test_packet\n");
380 break;
381 case TEST_FORCE_EN:
382 seq_printf(s, "test_force_enable\n");
383 break;
384 default:
385 seq_printf(s, "UNKNOWN %d\n", reg);
386 }
387
388 return 0;
389}
390
391static int dwc3_testmode_open(struct inode *inode, struct file *file)
392{
393 return single_open(file, dwc3_testmode_show, inode->i_private);
394}
395
396static ssize_t dwc3_testmode_write(struct file *file,
397 const char __user *ubuf, size_t count, loff_t *ppos)
398{
399 struct seq_file *s = file->private_data;
400 struct dwc3 *dwc = s->private;
401 unsigned long flags;
402 u32 testmode = 0;
403 char buf[32];
404
405 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
406 return -EFAULT;
407
408 if (!strncmp(buf, "test_j", 6))
409 testmode = TEST_J;
410 else if (!strncmp(buf, "test_k", 6))
411 testmode = TEST_K;
09072543 412 else if (!strncmp(buf, "test_se0_nak", 12))
080d921f 413 testmode = TEST_SE0_NAK;
09072543 414 else if (!strncmp(buf, "test_packet", 11))
080d921f 415 testmode = TEST_PACKET;
09072543 416 else if (!strncmp(buf, "test_force_enable", 17))
080d921f
FB		 417 testmode = TEST_FORCE_EN;
418 else
419 testmode = 0;
420
421 spin_lock_irqsave(&dwc->lock, flags);
422 dwc3_gadget_set_test_mode(dwc, testmode);
423 spin_unlock_irqrestore(&dwc->lock, flags);
424
425 return count;
426}
427
428static const struct file_operations dwc3_testmode_fops = {
429 .open = dwc3_testmode_open,
430 .write = dwc3_testmode_write,
431 .read = seq_read,
432 .llseek = seq_lseek,
433 .release = single_release,
434};
435
138801aa
FB		 436static int dwc3_link_state_show(struct seq_file *s, void *unused)
437{
438 struct dwc3 *dwc = s->private;
439 unsigned long flags;
440 enum dwc3_link_state state;
441 u32 reg;
442
443 spin_lock_irqsave(&dwc->lock, flags);
444 reg = dwc3_readl(dwc->regs, DWC3_DSTS);
445 state = DWC3_DSTS_USBLNKST(reg);
446 spin_unlock_irqrestore(&dwc->lock, flags);
447
448 switch (state) {
449 case DWC3_LINK_STATE_U0:
450 seq_printf(s, "U0\n");
451 break;
452 case DWC3_LINK_STATE_U1:
453 seq_printf(s, "U1\n");
454 break;
455 case DWC3_LINK_STATE_U2:
456 seq_printf(s, "U2\n");
457 break;
458 case DWC3_LINK_STATE_U3:
459 seq_printf(s, "U3\n");
460 break;
461 case DWC3_LINK_STATE_SS_DIS:
462 seq_printf(s, "SS.Disabled\n");
463 break;
464 case DWC3_LINK_STATE_RX_DET:
465 seq_printf(s, "Rx.Detect\n");
466 break;
467 case DWC3_LINK_STATE_SS_INACT:
468 seq_printf(s, "SS.Inactive\n");
469 break;
470 case DWC3_LINK_STATE_POLL:
471 seq_printf(s, "Poll\n");
472 break;
473 case DWC3_LINK_STATE_RECOV:
474 seq_printf(s, "Recovery\n");
475 break;
476 case DWC3_LINK_STATE_HRESET:
477 seq_printf(s, "HRESET\n");
478 break;
479 case DWC3_LINK_STATE_CMPLY:
480 seq_printf(s, "Compliance\n");
481 break;
482 case DWC3_LINK_STATE_LPBK:
483 seq_printf(s, "Loopback\n");
484 break;
6b2a0eb8
FB		 485 case DWC3_LINK_STATE_RESET:
486 seq_printf(s, "Reset\n");
487 break;
488 case DWC3_LINK_STATE_RESUME:
489 seq_printf(s, "Resume\n");
490 break;
138801aa 491 default:
5b9ec339 492 seq_printf(s, "UNKNOWN %d\n", state);
138801aa
FB		 493 }
494
495 return 0;
496}
497
498static int dwc3_link_state_open(struct inode *inode, struct file *file)
499{
500 return single_open(file, dwc3_link_state_show, inode->i_private);
501}
502
503static ssize_t dwc3_link_state_write(struct file *file,
504 const char __user *ubuf, size_t count, loff_t *ppos)
505{
506 struct seq_file *s = file->private_data;
507 struct dwc3 *dwc = s->private;
508 unsigned long flags;
509 enum dwc3_link_state state = 0;
510 char buf[32];
511
512 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
513 return -EFAULT;
514
515 if (!strncmp(buf, "SS.Disabled", 11))
516 state = DWC3_LINK_STATE_SS_DIS;
517 else if (!strncmp(buf, "Rx.Detect", 9))
518 state = DWC3_LINK_STATE_RX_DET;
519 else if (!strncmp(buf, "SS.Inactive", 11))
520 state = DWC3_LINK_STATE_SS_INACT;
521 else if (!strncmp(buf, "Recovery", 8))
522 state = DWC3_LINK_STATE_RECOV;
523 else if (!strncmp(buf, "Compliance", 10))
524 state = DWC3_LINK_STATE_CMPLY;
525 else if (!strncmp(buf, "Loopback", 8))
526 state = DWC3_LINK_STATE_LPBK;
527 else
528 return -EINVAL;
529
530 spin_lock_irqsave(&dwc->lock, flags);
531 dwc3_gadget_set_link_state(dwc, state);
532 spin_unlock_irqrestore(&dwc->lock, flags);
533
534 return count;
535}
536
537static const struct file_operations dwc3_link_state_fops = {
538 .open = dwc3_link_state_open,
539 .write = dwc3_link_state_write,
540 .read = seq_read,
541 .llseek = seq_lseek,
542 .release = single_release,
543};
544
818ec3ab
FB		 545struct dwc3_ep_file_map {
546 char name[25];
547 int (*show)(struct seq_file *s, void *unused);
548};
549
550static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused)
551{
552 struct dwc3_ep *dep = s->private;
553 struct dwc3 *dwc = dep->dwc;
554 unsigned long flags;
555 u32 val;
556
557 spin_lock_irqsave(&dwc->lock, flags);
558 val = dwc3_core_fifo_space(dep, DWC3_TXFIFOQ);
559 seq_printf(s, "%u\n", val);
560 spin_unlock_irqrestore(&dwc->lock, flags);
561
562 return 0;
563}
564
565static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused)
566{
567 struct dwc3_ep *dep = s->private;
568 struct dwc3 *dwc = dep->dwc;
569 unsigned long flags;
570 u32 val;
571
572 spin_lock_irqsave(&dwc->lock, flags);
573 val = dwc3_core_fifo_space(dep, DWC3_RXFIFOQ);
574 seq_printf(s, "%u\n", val);
575 spin_unlock_irqrestore(&dwc->lock, flags);
576
577 return 0;
578}
579
580static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused)
581{
582 struct dwc3_ep *dep = s->private;
583 struct dwc3 *dwc = dep->dwc;
584 unsigned long flags;
585 u32 val;
586
587 spin_lock_irqsave(&dwc->lock, flags);
588 val = dwc3_core_fifo_space(dep, DWC3_TXREQQ);
589 seq_printf(s, "%u\n", val);
590 spin_unlock_irqrestore(&dwc->lock, flags);
591
592 return 0;
593}
594
595static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused)
596{
597 struct dwc3_ep *dep = s->private;
598 struct dwc3 *dwc = dep->dwc;
599 unsigned long flags;
600 u32 val;
601
602 spin_lock_irqsave(&dwc->lock, flags);
603 val = dwc3_core_fifo_space(dep, DWC3_RXREQQ);
604 seq_printf(s, "%u\n", val);
605 spin_unlock_irqrestore(&dwc->lock, flags);
606
607 return 0;
608}
609
610static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused)
611{
612 struct dwc3_ep *dep = s->private;
613 struct dwc3 *dwc = dep->dwc;
614 unsigned long flags;
615 u32 val;
616
617 spin_lock_irqsave(&dwc->lock, flags);
618 val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ);
619 seq_printf(s, "%u\n", val);
620 spin_unlock_irqrestore(&dwc->lock, flags);
621
622 return 0;
623}
624
625static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused)
626{
627 struct dwc3_ep *dep = s->private;
628 struct dwc3 *dwc = dep->dwc;
629 unsigned long flags;
630 u32 val;
631
632 spin_lock_irqsave(&dwc->lock, flags);
633 val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ);
634 seq_printf(s, "%u\n", val);
635 spin_unlock_irqrestore(&dwc->lock, flags);
636
637 return 0;
638}
639
640static int dwc3_event_queue_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 u32 val;
646
647 spin_lock_irqsave(&dwc->lock, flags);
648 val = dwc3_core_fifo_space(dep, DWC3_EVENTQ);
649 seq_printf(s, "%u\n", val);
650 spin_unlock_irqrestore(&dwc->lock, flags);
651
652 return 0;
653}
654
655static int dwc3_ep_transfer_type_show(struct seq_file *s, void *unused)
656{
657 struct dwc3_ep *dep = s->private;
658 struct dwc3 *dwc = dep->dwc;
659 unsigned long flags;
660
661 spin_lock_irqsave(&dwc->lock, flags);
662 if (!(dep->flags & DWC3_EP_ENABLED) ||
663 !dep->endpoint.desc) {
664 seq_printf(s, "--\n");
665 goto out;
666 }
667
668 switch (usb_endpoint_type(dep->endpoint.desc)) {
669 case USB_ENDPOINT_XFER_CONTROL:
670 seq_printf(s, "control\n");
671 break;
672 case USB_ENDPOINT_XFER_ISOC:
673 seq_printf(s, "isochronous\n");
674 break;
675 case USB_ENDPOINT_XFER_BULK:
676 seq_printf(s, "bulk\n");
677 break;
678 case USB_ENDPOINT_XFER_INT:
679 seq_printf(s, "interrupt\n");
680 break;
681 default:
682 seq_printf(s, "--\n");
683 }
684
685out:
686 spin_unlock_irqrestore(&dwc->lock, flags);
687
688 return 0;
689}
690
691static inline const char *dwc3_trb_type_string(struct dwc3_trb *trb)
692{
693 switch (DWC3_TRBCTL_TYPE(trb->ctrl)) {
694 case DWC3_TRBCTL_NORMAL:
695 return "normal";
696 case DWC3_TRBCTL_CONTROL_SETUP:
697 return "control-setup";
698 case DWC3_TRBCTL_CONTROL_STATUS2:
699 return "control-status2";
700 case DWC3_TRBCTL_CONTROL_STATUS3:
701 return "control-status3";
702 case DWC3_TRBCTL_CONTROL_DATA:
703 return "control-data";
704 case DWC3_TRBCTL_ISOCHRONOUS_FIRST:
705 return "isoc-first";
706 case DWC3_TRBCTL_ISOCHRONOUS:
707 return "isoc";
708 case DWC3_TRBCTL_LINK_TRB:
709 return "link";
710 default:
711 return "UNKNOWN";
712 }
713}
714
715static int dwc3_ep_trb_ring_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 int i;
721
722 spin_lock_irqsave(&dwc->lock, flags);
723 if (dep->number <= 1) {
724 seq_printf(s, "--\n");
725 goto out;
726 }
727
728 seq_printf(s, "enqueue pointer %d\n", dep->trb_enqueue);
729 seq_printf(s, "dequeue pointer %d\n", dep->trb_dequeue);
730 seq_printf(s, "\n--------------------------------------------------\n\n");
731 seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
732
733 for (i = 0; i < DWC3_TRB_NUM; i++) {
734 struct dwc3_trb *trb = &dep->trb_pool[i];
735
736 seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d\n",
737 trb->bph, trb->bpl, trb->size,
738 dwc3_trb_type_string(trb),
739 !!(trb->ctrl & DWC3_TRB_CTRL_IOC),
740 !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI),
741 !!(trb->ctrl & DWC3_TRB_CTRL_CSP),
742 !!(trb->ctrl & DWC3_TRB_CTRL_CHN),
743 !!(trb->ctrl & DWC3_TRB_CTRL_LST),
744 !!(trb->ctrl & DWC3_TRB_CTRL_HWO));
745 }
746
747out:
748 spin_unlock_irqrestore(&dwc->lock, flags);
749
750 return 0;
751}
752
753static struct dwc3_ep_file_map map[] = {
754 { "tx_fifo_queue", dwc3_tx_fifo_queue_show, },
755 { "rx_fifo_queue", dwc3_rx_fifo_queue_show, },
756 { "tx_request_queue", dwc3_tx_request_queue_show, },
757 { "rx_request_queue", dwc3_rx_request_queue_show, },
758 { "rx_info_queue", dwc3_rx_info_queue_show, },
759 { "descriptor_fetch_queue", dwc3_descriptor_fetch_queue_show, },
760 { "event_queue", dwc3_event_queue_show, },
761 { "transfer_type", dwc3_ep_transfer_type_show, },
762 { "trb_ring", dwc3_ep_trb_ring_show, },
763};
764
765static int dwc3_endpoint_open(struct inode *inode, struct file *file)
766{
767 const char *file_name = file_dentry(file)->d_iname;
768 struct dwc3_ep_file_map *f_map;
769 int i;
770
771 for (i = 0; i < ARRAY_SIZE(map); i++) {
772 f_map = &map[i];
773
774 if (strcmp(f_map->name, file_name) == 0)
775 break;
776 }
777
778 return single_open(file, f_map->show, inode->i_private);
779}
780
781static const struct file_operations dwc3_endpoint_fops = {
782 .open = dwc3_endpoint_open,
783 .read = seq_read,
784 .llseek = seq_lseek,
785 .release = single_release,
786};
787
788static void dwc3_debugfs_create_endpoint_file(struct dwc3_ep *dep,
789 struct dentry *parent, int type)
72246da4 790{
72246da4 791 struct dentry *file;
818ec3ab 792 struct dwc3_ep_file_map *ep_file = &map[type];
72246da4 793
818ec3ab
FB		 794 file = debugfs_create_file(ep_file->name, S_IRUGO, parent, dep,
795 &dwc3_endpoint_fops);
796}
797
798static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep,
799 struct dentry *parent)
800{
801 int i;
802
803 for (i = 0; i < ARRAY_SIZE(map); i++)
804 dwc3_debugfs_create_endpoint_file(dep, parent, i);
805}
806
807static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep,
808 struct dentry *parent)
809{
810 struct dentry *dir;
811
812 dir = debugfs_create_dir(dep->name, parent);
813 if (IS_ERR_OR_NULL(dir))
814 return;
815
816 dwc3_debugfs_create_endpoint_files(dep, dir);
817}
818
819static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc,
820 struct dentry *parent)
821{
822 int i;
823
824 for (i = 0; i < dwc->num_in_eps; i++) {
825 u8 epnum = (i << 1) | 1;
826 struct dwc3_ep *dep = dwc->eps[epnum];
827
828 if (!dep)
829 continue;
830
831 dwc3_debugfs_create_endpoint_dir(dep, parent);
832 }
833
834 for (i = 0; i < dwc->num_out_eps; i++) {
835 u8 epnum = (i << 1);
836 struct dwc3_ep *dep = dwc->eps[epnum];
837
838 if (!dep)
839 continue;
840
841 dwc3_debugfs_create_endpoint_dir(dep, parent);
72246da4 842 }
818ec3ab
FB		 843}
844
4e9f3118 845void dwc3_debugfs_init(struct dwc3 *dwc)
72246da4
FB		 846{
847 struct dentry *root;
4e9f3118 848 struct dentry *file;
72246da4 849
72246da4 850 root = debugfs_create_dir(dev_name(dwc->dev), NULL);
4e9f3118
CD		 851 if (IS_ERR_OR_NULL(root)) {
852 if (!root)
853 dev_err(dwc->dev, "Can't create debugfs root\n");
854 return;
72246da4 855 }
72246da4
FB		 856 dwc->root = root;
857
d7668024
FB		 858 dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
859 if (!dwc->regset) {
4e9f3118
CD		 860 debugfs_remove_recursive(root);
861 return;
d7668024
FB		 862 }
863
864 dwc->regset->regs = dwc3_regs;
865 dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
2eb88016 866 dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START;
d7668024
FB		 867
868 file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
4e9f3118
CD		 869 if (!file)
870 dev_dbg(dwc->dev, "Can't create debugfs regdump\n");
0b9fe32d 871
dbfff05d
FB		 872 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
873 file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
874 dwc, &dwc3_mode_fops);
4e9f3118
CD		 875 if (!file)
876 dev_dbg(dwc->dev, "Can't create debugfs mode\n");
0b9fe32d
FB		 877 }
878
dbfff05d
FB		 879 if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
880 IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
881 file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
882 dwc, &dwc3_testmode_fops);
4e9f3118
CD		 883 if (!file)
884 dev_dbg(dwc->dev, "Can't create debugfs testmode\n");
138801aa 885
4e9f3118
CD		 886 file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR,
887 root, dwc, &dwc3_link_state_fops);
888 if (!file)
889 dev_dbg(dwc->dev, "Can't create debugfs link_state\n");
72246da4 890
818ec3ab 891 dwc3_debugfs_create_endpoint_dirs(dwc, root);
4e9f3118 892 }
72246da4
FB		 893}
894
fb4e98ab 895void dwc3_debugfs_exit(struct dwc3 *dwc)
72246da4
FB		 896{
897 debugfs_remove_recursive(dwc->root);
e6bdf819 898 kfree(dwc->regset);
72246da4 899}
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