Loading...
Note: File does not exist in v3.1.
1// SPDX-License-Identifier: GPL-2.0
2/**
3 * debugfs.c - Designware USB2 DRD controller debugfs
4 *
5 * Copyright (C) 2015 Intel Corporation
6 * Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
7 */
8
9#include <linux/spinlock.h>
10#include <linux/debugfs.h>
11#include <linux/seq_file.h>
12#include <linux/uaccess.h>
13
14#include "core.h"
15#include "debug.h"
16
17#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \
18 IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
19/**
20 * testmode_write - debugfs: change usb test mode
21 * @seq: The seq file to write to.
22 * @v: Unused parameter.
23 *
24 * This debugfs entry modify the current usb test mode.
25 */
26static ssize_t testmode_write(struct file *file, const char __user *ubuf, size_t
27 count, loff_t *ppos)
28{
29 struct seq_file *s = file->private_data;
30 struct dwc2_hsotg *hsotg = s->private;
31 unsigned long flags;
32 u32 testmode = 0;
33 char buf[32];
34
35 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
36 return -EFAULT;
37
38 if (!strncmp(buf, "test_j", 6))
39 testmode = TEST_J;
40 else if (!strncmp(buf, "test_k", 6))
41 testmode = TEST_K;
42 else if (!strncmp(buf, "test_se0_nak", 12))
43 testmode = TEST_SE0_NAK;
44 else if (!strncmp(buf, "test_packet", 11))
45 testmode = TEST_PACKET;
46 else if (!strncmp(buf, "test_force_enable", 17))
47 testmode = TEST_FORCE_EN;
48 else
49 testmode = 0;
50
51 spin_lock_irqsave(&hsotg->lock, flags);
52 dwc2_hsotg_set_test_mode(hsotg, testmode);
53 spin_unlock_irqrestore(&hsotg->lock, flags);
54 return count;
55}
56
57/**
58 * testmode_show - debugfs: show usb test mode state
59 * @seq: The seq file to write to.
60 * @v: Unused parameter.
61 *
62 * This debugfs entry shows which usb test mode is currently enabled.
63 */
64static int testmode_show(struct seq_file *s, void *unused)
65{
66 struct dwc2_hsotg *hsotg = s->private;
67 unsigned long flags;
68 int dctl;
69
70 spin_lock_irqsave(&hsotg->lock, flags);
71 dctl = dwc2_readl(hsotg->regs + DCTL);
72 dctl &= DCTL_TSTCTL_MASK;
73 dctl >>= DCTL_TSTCTL_SHIFT;
74 spin_unlock_irqrestore(&hsotg->lock, flags);
75
76 switch (dctl) {
77 case 0:
78 seq_puts(s, "no test\n");
79 break;
80 case TEST_J:
81 seq_puts(s, "test_j\n");
82 break;
83 case TEST_K:
84 seq_puts(s, "test_k\n");
85 break;
86 case TEST_SE0_NAK:
87 seq_puts(s, "test_se0_nak\n");
88 break;
89 case TEST_PACKET:
90 seq_puts(s, "test_packet\n");
91 break;
92 case TEST_FORCE_EN:
93 seq_puts(s, "test_force_enable\n");
94 break;
95 default:
96 seq_printf(s, "UNKNOWN %d\n", dctl);
97 }
98
99 return 0;
100}
101
102static int testmode_open(struct inode *inode, struct file *file)
103{
104 return single_open(file, testmode_show, inode->i_private);
105}
106
107static const struct file_operations testmode_fops = {
108 .owner = THIS_MODULE,
109 .open = testmode_open,
110 .write = testmode_write,
111 .read = seq_read,
112 .llseek = seq_lseek,
113 .release = single_release,
114};
115
116/**
117 * state_show - debugfs: show overall driver and device state.
118 * @seq: The seq file to write to.
119 * @v: Unused parameter.
120 *
121 * This debugfs entry shows the overall state of the hardware and
122 * some general information about each of the endpoints available
123 * to the system.
124 */
125static int state_show(struct seq_file *seq, void *v)
126{
127 struct dwc2_hsotg *hsotg = seq->private;
128 void __iomem *regs = hsotg->regs;
129 int idx;
130
131 seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n",
132 dwc2_readl(regs + DCFG),
133 dwc2_readl(regs + DCTL),
134 dwc2_readl(regs + DSTS));
135
136 seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n",
137 dwc2_readl(regs + DIEPMSK), dwc2_readl(regs + DOEPMSK));
138
139 seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n",
140 dwc2_readl(regs + GINTMSK),
141 dwc2_readl(regs + GINTSTS));
142
143 seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n",
144 dwc2_readl(regs + DAINTMSK),
145 dwc2_readl(regs + DAINT));
146
147 seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n",
148 dwc2_readl(regs + GNPTXSTS),
149 dwc2_readl(regs + GRXSTSR));
150
151 seq_puts(seq, "\nEndpoint status:\n");
152
153 for (idx = 0; idx < hsotg->num_of_eps; idx++) {
154 u32 in, out;
155
156 in = dwc2_readl(regs + DIEPCTL(idx));
157 out = dwc2_readl(regs + DOEPCTL(idx));
158
159 seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x",
160 idx, in, out);
161
162 in = dwc2_readl(regs + DIEPTSIZ(idx));
163 out = dwc2_readl(regs + DOEPTSIZ(idx));
164
165 seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x",
166 in, out);
167
168 seq_puts(seq, "\n");
169 }
170
171 return 0;
172}
173DEFINE_SHOW_ATTRIBUTE(state);
174
175/**
176 * fifo_show - debugfs: show the fifo information
177 * @seq: The seq_file to write data to.
178 * @v: Unused parameter.
179 *
180 * Show the FIFO information for the overall fifo and all the
181 * periodic transmission FIFOs.
182 */
183static int fifo_show(struct seq_file *seq, void *v)
184{
185 struct dwc2_hsotg *hsotg = seq->private;
186 void __iomem *regs = hsotg->regs;
187 u32 val;
188 int idx;
189
190 seq_puts(seq, "Non-periodic FIFOs:\n");
191 seq_printf(seq, "RXFIFO: Size %d\n", dwc2_readl(regs + GRXFSIZ));
192
193 val = dwc2_readl(regs + GNPTXFSIZ);
194 seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n",
195 val >> FIFOSIZE_DEPTH_SHIFT,
196 val & FIFOSIZE_STARTADDR_MASK);
197
198 seq_puts(seq, "\nPeriodic TXFIFOs:\n");
199
200 for (idx = 1; idx < hsotg->num_of_eps; idx++) {
201 val = dwc2_readl(regs + DPTXFSIZN(idx));
202
203 seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx,
204 val >> FIFOSIZE_DEPTH_SHIFT,
205 val & FIFOSIZE_STARTADDR_MASK);
206 }
207
208 return 0;
209}
210DEFINE_SHOW_ATTRIBUTE(fifo);
211
212static const char *decode_direction(int is_in)
213{
214 return is_in ? "in" : "out";
215}
216
217/**
218 * ep_show - debugfs: show the state of an endpoint.
219 * @seq: The seq_file to write data to.
220 * @v: Unused parameter.
221 *
222 * This debugfs entry shows the state of the given endpoint (one is
223 * registered for each available).
224 */
225static int ep_show(struct seq_file *seq, void *v)
226{
227 struct dwc2_hsotg_ep *ep = seq->private;
228 struct dwc2_hsotg *hsotg = ep->parent;
229 struct dwc2_hsotg_req *req;
230 void __iomem *regs = hsotg->regs;
231 int index = ep->index;
232 int show_limit = 15;
233 unsigned long flags;
234
235 seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n",
236 ep->index, ep->ep.name, decode_direction(ep->dir_in));
237
238 /* first show the register state */
239
240 seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n",
241 dwc2_readl(regs + DIEPCTL(index)),
242 dwc2_readl(regs + DOEPCTL(index)));
243
244 seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n",
245 dwc2_readl(regs + DIEPDMA(index)),
246 dwc2_readl(regs + DOEPDMA(index)));
247
248 seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n",
249 dwc2_readl(regs + DIEPINT(index)),
250 dwc2_readl(regs + DOEPINT(index)));
251
252 seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n",
253 dwc2_readl(regs + DIEPTSIZ(index)),
254 dwc2_readl(regs + DOEPTSIZ(index)));
255
256 seq_puts(seq, "\n");
257 seq_printf(seq, "mps %d\n", ep->ep.maxpacket);
258 seq_printf(seq, "total_data=%ld\n", ep->total_data);
259
260 seq_printf(seq, "request list (%p,%p):\n",
261 ep->queue.next, ep->queue.prev);
262
263 spin_lock_irqsave(&hsotg->lock, flags);
264
265 list_for_each_entry(req, &ep->queue, queue) {
266 if (--show_limit < 0) {
267 seq_puts(seq, "not showing more requests...\n");
268 break;
269 }
270
271 seq_printf(seq, "%c req %p: %d bytes @%p, ",
272 req == ep->req ? '*' : ' ',
273 req, req->req.length, req->req.buf);
274 seq_printf(seq, "%d done, res %d\n",
275 req->req.actual, req->req.status);
276 }
277
278 spin_unlock_irqrestore(&hsotg->lock, flags);
279
280 return 0;
281}
282DEFINE_SHOW_ATTRIBUTE(ep);
283
284/**
285 * dwc2_hsotg_create_debug - create debugfs directory and files
286 * @hsotg: The driver state
287 *
288 * Create the debugfs files to allow the user to get information
289 * about the state of the system. The directory name is created
290 * with the same name as the device itself, in case we end up
291 * with multiple blocks in future systems.
292 */
293static void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg)
294{
295 struct dentry *root;
296 struct dentry *file;
297 unsigned int epidx;
298
299 root = hsotg->debug_root;
300
301 /* create general state file */
302
303 file = debugfs_create_file("state", 0444, root, hsotg, &state_fops);
304 if (IS_ERR(file))
305 dev_err(hsotg->dev, "%s: failed to create state\n", __func__);
306
307 file = debugfs_create_file("testmode", 0644, root, hsotg,
308 &testmode_fops);
309 if (IS_ERR(file))
310 dev_err(hsotg->dev, "%s: failed to create testmode\n",
311 __func__);
312
313 file = debugfs_create_file("fifo", 0444, root, hsotg, &fifo_fops);
314 if (IS_ERR(file))
315 dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__);
316
317 /* Create one file for each out endpoint */
318 for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) {
319 struct dwc2_hsotg_ep *ep;
320
321 ep = hsotg->eps_out[epidx];
322 if (ep) {
323 file = debugfs_create_file(ep->name, 0444,
324 root, ep, &ep_fops);
325 if (IS_ERR(file))
326 dev_err(hsotg->dev, "failed to create %s debug file\n",
327 ep->name);
328 }
329 }
330 /* Create one file for each in endpoint. EP0 is handled with out eps */
331 for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) {
332 struct dwc2_hsotg_ep *ep;
333
334 ep = hsotg->eps_in[epidx];
335 if (ep) {
336 file = debugfs_create_file(ep->name, 0444,
337 root, ep, &ep_fops);
338 if (IS_ERR(file))
339 dev_err(hsotg->dev, "failed to create %s debug file\n",
340 ep->name);
341 }
342 }
343}
344#else
345static inline void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) {}
346#endif
347
348/* dwc2_hsotg_delete_debug is removed as cleanup in done in dwc2_debugfs_exit */
349
350#define dump_register(nm) \
351{ \
352 .name = #nm, \
353 .offset = nm, \
354}
355
356static const struct debugfs_reg32 dwc2_regs[] = {
357 /*
358 * Accessing registers like this can trigger mode mismatch interrupt.
359 * However, according to dwc2 databook, the register access, in this
360 * case, is completed on the processor bus but is ignored by the core
361 * and does not affect its operation.
362 */
363 dump_register(GOTGCTL),
364 dump_register(GOTGINT),
365 dump_register(GAHBCFG),
366 dump_register(GUSBCFG),
367 dump_register(GRSTCTL),
368 dump_register(GINTSTS),
369 dump_register(GINTMSK),
370 dump_register(GRXSTSR),
371 dump_register(GRXSTSP),
372 dump_register(GRXFSIZ),
373 dump_register(GNPTXFSIZ),
374 dump_register(GNPTXSTS),
375 dump_register(GI2CCTL),
376 dump_register(GPVNDCTL),
377 dump_register(GGPIO),
378 dump_register(GUID),
379 dump_register(GSNPSID),
380 dump_register(GHWCFG1),
381 dump_register(GHWCFG2),
382 dump_register(GHWCFG3),
383 dump_register(GHWCFG4),
384 dump_register(GLPMCFG),
385 dump_register(GPWRDN),
386 dump_register(GDFIFOCFG),
387 dump_register(ADPCTL),
388 dump_register(HPTXFSIZ),
389 dump_register(DPTXFSIZN(1)),
390 dump_register(DPTXFSIZN(2)),
391 dump_register(DPTXFSIZN(3)),
392 dump_register(DPTXFSIZN(4)),
393 dump_register(DPTXFSIZN(5)),
394 dump_register(DPTXFSIZN(6)),
395 dump_register(DPTXFSIZN(7)),
396 dump_register(DPTXFSIZN(8)),
397 dump_register(DPTXFSIZN(9)),
398 dump_register(DPTXFSIZN(10)),
399 dump_register(DPTXFSIZN(11)),
400 dump_register(DPTXFSIZN(12)),
401 dump_register(DPTXFSIZN(13)),
402 dump_register(DPTXFSIZN(14)),
403 dump_register(DPTXFSIZN(15)),
404 dump_register(DCFG),
405 dump_register(DCTL),
406 dump_register(DSTS),
407 dump_register(DIEPMSK),
408 dump_register(DOEPMSK),
409 dump_register(DAINT),
410 dump_register(DAINTMSK),
411 dump_register(DTKNQR1),
412 dump_register(DTKNQR2),
413 dump_register(DTKNQR3),
414 dump_register(DTKNQR4),
415 dump_register(DVBUSDIS),
416 dump_register(DVBUSPULSE),
417 dump_register(DIEPCTL(0)),
418 dump_register(DIEPCTL(1)),
419 dump_register(DIEPCTL(2)),
420 dump_register(DIEPCTL(3)),
421 dump_register(DIEPCTL(4)),
422 dump_register(DIEPCTL(5)),
423 dump_register(DIEPCTL(6)),
424 dump_register(DIEPCTL(7)),
425 dump_register(DIEPCTL(8)),
426 dump_register(DIEPCTL(9)),
427 dump_register(DIEPCTL(10)),
428 dump_register(DIEPCTL(11)),
429 dump_register(DIEPCTL(12)),
430 dump_register(DIEPCTL(13)),
431 dump_register(DIEPCTL(14)),
432 dump_register(DIEPCTL(15)),
433 dump_register(DOEPCTL(0)),
434 dump_register(DOEPCTL(1)),
435 dump_register(DOEPCTL(2)),
436 dump_register(DOEPCTL(3)),
437 dump_register(DOEPCTL(4)),
438 dump_register(DOEPCTL(5)),
439 dump_register(DOEPCTL(6)),
440 dump_register(DOEPCTL(7)),
441 dump_register(DOEPCTL(8)),
442 dump_register(DOEPCTL(9)),
443 dump_register(DOEPCTL(10)),
444 dump_register(DOEPCTL(11)),
445 dump_register(DOEPCTL(12)),
446 dump_register(DOEPCTL(13)),
447 dump_register(DOEPCTL(14)),
448 dump_register(DOEPCTL(15)),
449 dump_register(DIEPINT(0)),
450 dump_register(DIEPINT(1)),
451 dump_register(DIEPINT(2)),
452 dump_register(DIEPINT(3)),
453 dump_register(DIEPINT(4)),
454 dump_register(DIEPINT(5)),
455 dump_register(DIEPINT(6)),
456 dump_register(DIEPINT(7)),
457 dump_register(DIEPINT(8)),
458 dump_register(DIEPINT(9)),
459 dump_register(DIEPINT(10)),
460 dump_register(DIEPINT(11)),
461 dump_register(DIEPINT(12)),
462 dump_register(DIEPINT(13)),
463 dump_register(DIEPINT(14)),
464 dump_register(DIEPINT(15)),
465 dump_register(DOEPINT(0)),
466 dump_register(DOEPINT(1)),
467 dump_register(DOEPINT(2)),
468 dump_register(DOEPINT(3)),
469 dump_register(DOEPINT(4)),
470 dump_register(DOEPINT(5)),
471 dump_register(DOEPINT(6)),
472 dump_register(DOEPINT(7)),
473 dump_register(DOEPINT(8)),
474 dump_register(DOEPINT(9)),
475 dump_register(DOEPINT(10)),
476 dump_register(DOEPINT(11)),
477 dump_register(DOEPINT(12)),
478 dump_register(DOEPINT(13)),
479 dump_register(DOEPINT(14)),
480 dump_register(DOEPINT(15)),
481 dump_register(DIEPTSIZ(0)),
482 dump_register(DIEPTSIZ(1)),
483 dump_register(DIEPTSIZ(2)),
484 dump_register(DIEPTSIZ(3)),
485 dump_register(DIEPTSIZ(4)),
486 dump_register(DIEPTSIZ(5)),
487 dump_register(DIEPTSIZ(6)),
488 dump_register(DIEPTSIZ(7)),
489 dump_register(DIEPTSIZ(8)),
490 dump_register(DIEPTSIZ(9)),
491 dump_register(DIEPTSIZ(10)),
492 dump_register(DIEPTSIZ(11)),
493 dump_register(DIEPTSIZ(12)),
494 dump_register(DIEPTSIZ(13)),
495 dump_register(DIEPTSIZ(14)),
496 dump_register(DIEPTSIZ(15)),
497 dump_register(DOEPTSIZ(0)),
498 dump_register(DOEPTSIZ(1)),
499 dump_register(DOEPTSIZ(2)),
500 dump_register(DOEPTSIZ(3)),
501 dump_register(DOEPTSIZ(4)),
502 dump_register(DOEPTSIZ(5)),
503 dump_register(DOEPTSIZ(6)),
504 dump_register(DOEPTSIZ(7)),
505 dump_register(DOEPTSIZ(8)),
506 dump_register(DOEPTSIZ(9)),
507 dump_register(DOEPTSIZ(10)),
508 dump_register(DOEPTSIZ(11)),
509 dump_register(DOEPTSIZ(12)),
510 dump_register(DOEPTSIZ(13)),
511 dump_register(DOEPTSIZ(14)),
512 dump_register(DOEPTSIZ(15)),
513 dump_register(DIEPDMA(0)),
514 dump_register(DIEPDMA(1)),
515 dump_register(DIEPDMA(2)),
516 dump_register(DIEPDMA(3)),
517 dump_register(DIEPDMA(4)),
518 dump_register(DIEPDMA(5)),
519 dump_register(DIEPDMA(6)),
520 dump_register(DIEPDMA(7)),
521 dump_register(DIEPDMA(8)),
522 dump_register(DIEPDMA(9)),
523 dump_register(DIEPDMA(10)),
524 dump_register(DIEPDMA(11)),
525 dump_register(DIEPDMA(12)),
526 dump_register(DIEPDMA(13)),
527 dump_register(DIEPDMA(14)),
528 dump_register(DIEPDMA(15)),
529 dump_register(DOEPDMA(0)),
530 dump_register(DOEPDMA(1)),
531 dump_register(DOEPDMA(2)),
532 dump_register(DOEPDMA(3)),
533 dump_register(DOEPDMA(4)),
534 dump_register(DOEPDMA(5)),
535 dump_register(DOEPDMA(6)),
536 dump_register(DOEPDMA(7)),
537 dump_register(DOEPDMA(8)),
538 dump_register(DOEPDMA(9)),
539 dump_register(DOEPDMA(10)),
540 dump_register(DOEPDMA(11)),
541 dump_register(DOEPDMA(12)),
542 dump_register(DOEPDMA(13)),
543 dump_register(DOEPDMA(14)),
544 dump_register(DOEPDMA(15)),
545 dump_register(DTXFSTS(0)),
546 dump_register(DTXFSTS(1)),
547 dump_register(DTXFSTS(2)),
548 dump_register(DTXFSTS(3)),
549 dump_register(DTXFSTS(4)),
550 dump_register(DTXFSTS(5)),
551 dump_register(DTXFSTS(6)),
552 dump_register(DTXFSTS(7)),
553 dump_register(DTXFSTS(8)),
554 dump_register(DTXFSTS(9)),
555 dump_register(DTXFSTS(10)),
556 dump_register(DTXFSTS(11)),
557 dump_register(DTXFSTS(12)),
558 dump_register(DTXFSTS(13)),
559 dump_register(DTXFSTS(14)),
560 dump_register(DTXFSTS(15)),
561 dump_register(PCGCTL),
562 dump_register(HCFG),
563 dump_register(HFIR),
564 dump_register(HFNUM),
565 dump_register(HPTXSTS),
566 dump_register(HAINT),
567 dump_register(HAINTMSK),
568 dump_register(HFLBADDR),
569 dump_register(HPRT0),
570 dump_register(HCCHAR(0)),
571 dump_register(HCCHAR(1)),
572 dump_register(HCCHAR(2)),
573 dump_register(HCCHAR(3)),
574 dump_register(HCCHAR(4)),
575 dump_register(HCCHAR(5)),
576 dump_register(HCCHAR(6)),
577 dump_register(HCCHAR(7)),
578 dump_register(HCCHAR(8)),
579 dump_register(HCCHAR(9)),
580 dump_register(HCCHAR(10)),
581 dump_register(HCCHAR(11)),
582 dump_register(HCCHAR(12)),
583 dump_register(HCCHAR(13)),
584 dump_register(HCCHAR(14)),
585 dump_register(HCCHAR(15)),
586 dump_register(HCSPLT(0)),
587 dump_register(HCSPLT(1)),
588 dump_register(HCSPLT(2)),
589 dump_register(HCSPLT(3)),
590 dump_register(HCSPLT(4)),
591 dump_register(HCSPLT(5)),
592 dump_register(HCSPLT(6)),
593 dump_register(HCSPLT(7)),
594 dump_register(HCSPLT(8)),
595 dump_register(HCSPLT(9)),
596 dump_register(HCSPLT(10)),
597 dump_register(HCSPLT(11)),
598 dump_register(HCSPLT(12)),
599 dump_register(HCSPLT(13)),
600 dump_register(HCSPLT(14)),
601 dump_register(HCSPLT(15)),
602 dump_register(HCINT(0)),
603 dump_register(HCINT(1)),
604 dump_register(HCINT(2)),
605 dump_register(HCINT(3)),
606 dump_register(HCINT(4)),
607 dump_register(HCINT(5)),
608 dump_register(HCINT(6)),
609 dump_register(HCINT(7)),
610 dump_register(HCINT(8)),
611 dump_register(HCINT(9)),
612 dump_register(HCINT(10)),
613 dump_register(HCINT(11)),
614 dump_register(HCINT(12)),
615 dump_register(HCINT(13)),
616 dump_register(HCINT(14)),
617 dump_register(HCINT(15)),
618 dump_register(HCINTMSK(0)),
619 dump_register(HCINTMSK(1)),
620 dump_register(HCINTMSK(2)),
621 dump_register(HCINTMSK(3)),
622 dump_register(HCINTMSK(4)),
623 dump_register(HCINTMSK(5)),
624 dump_register(HCINTMSK(6)),
625 dump_register(HCINTMSK(7)),
626 dump_register(HCINTMSK(8)),
627 dump_register(HCINTMSK(9)),
628 dump_register(HCINTMSK(10)),
629 dump_register(HCINTMSK(11)),
630 dump_register(HCINTMSK(12)),
631 dump_register(HCINTMSK(13)),
632 dump_register(HCINTMSK(14)),
633 dump_register(HCINTMSK(15)),
634 dump_register(HCTSIZ(0)),
635 dump_register(HCTSIZ(1)),
636 dump_register(HCTSIZ(2)),
637 dump_register(HCTSIZ(3)),
638 dump_register(HCTSIZ(4)),
639 dump_register(HCTSIZ(5)),
640 dump_register(HCTSIZ(6)),
641 dump_register(HCTSIZ(7)),
642 dump_register(HCTSIZ(8)),
643 dump_register(HCTSIZ(9)),
644 dump_register(HCTSIZ(10)),
645 dump_register(HCTSIZ(11)),
646 dump_register(HCTSIZ(12)),
647 dump_register(HCTSIZ(13)),
648 dump_register(HCTSIZ(14)),
649 dump_register(HCTSIZ(15)),
650 dump_register(HCDMA(0)),
651 dump_register(HCDMA(1)),
652 dump_register(HCDMA(2)),
653 dump_register(HCDMA(3)),
654 dump_register(HCDMA(4)),
655 dump_register(HCDMA(5)),
656 dump_register(HCDMA(6)),
657 dump_register(HCDMA(7)),
658 dump_register(HCDMA(8)),
659 dump_register(HCDMA(9)),
660 dump_register(HCDMA(10)),
661 dump_register(HCDMA(11)),
662 dump_register(HCDMA(12)),
663 dump_register(HCDMA(13)),
664 dump_register(HCDMA(14)),
665 dump_register(HCDMA(15)),
666 dump_register(HCDMAB(0)),
667 dump_register(HCDMAB(1)),
668 dump_register(HCDMAB(2)),
669 dump_register(HCDMAB(3)),
670 dump_register(HCDMAB(4)),
671 dump_register(HCDMAB(5)),
672 dump_register(HCDMAB(6)),
673 dump_register(HCDMAB(7)),
674 dump_register(HCDMAB(8)),
675 dump_register(HCDMAB(9)),
676 dump_register(HCDMAB(10)),
677 dump_register(HCDMAB(11)),
678 dump_register(HCDMAB(12)),
679 dump_register(HCDMAB(13)),
680 dump_register(HCDMAB(14)),
681 dump_register(HCDMAB(15)),
682};
683
684#define print_param(_seq, _ptr, _param) \
685seq_printf((_seq), "%-30s: %d\n", #_param, (_ptr)->_param)
686
687#define print_param_hex(_seq, _ptr, _param) \
688seq_printf((_seq), "%-30s: 0x%x\n", #_param, (_ptr)->_param)
689
690static int params_show(struct seq_file *seq, void *v)
691{
692 struct dwc2_hsotg *hsotg = seq->private;
693 struct dwc2_core_params *p = &hsotg->params;
694 int i;
695
696 print_param(seq, p, otg_cap);
697 print_param(seq, p, dma_desc_enable);
698 print_param(seq, p, dma_desc_fs_enable);
699 print_param(seq, p, speed);
700 print_param(seq, p, enable_dynamic_fifo);
701 print_param(seq, p, en_multiple_tx_fifo);
702 print_param(seq, p, host_rx_fifo_size);
703 print_param(seq, p, host_nperio_tx_fifo_size);
704 print_param(seq, p, host_perio_tx_fifo_size);
705 print_param(seq, p, max_transfer_size);
706 print_param(seq, p, max_packet_count);
707 print_param(seq, p, host_channels);
708 print_param(seq, p, phy_type);
709 print_param(seq, p, phy_utmi_width);
710 print_param(seq, p, phy_ulpi_ddr);
711 print_param(seq, p, phy_ulpi_ext_vbus);
712 print_param(seq, p, i2c_enable);
713 print_param(seq, p, ulpi_fs_ls);
714 print_param(seq, p, host_support_fs_ls_low_power);
715 print_param(seq, p, host_ls_low_power_phy_clk);
716 print_param(seq, p, ts_dline);
717 print_param(seq, p, reload_ctl);
718 print_param_hex(seq, p, ahbcfg);
719 print_param(seq, p, uframe_sched);
720 print_param(seq, p, external_id_pin_ctl);
721 print_param(seq, p, power_down);
722 print_param(seq, p, lpm);
723 print_param(seq, p, lpm_clock_gating);
724 print_param(seq, p, besl);
725 print_param(seq, p, hird_threshold_en);
726 print_param(seq, p, hird_threshold);
727 print_param(seq, p, host_dma);
728 print_param(seq, p, g_dma);
729 print_param(seq, p, g_dma_desc);
730 print_param(seq, p, g_rx_fifo_size);
731 print_param(seq, p, g_np_tx_fifo_size);
732
733 for (i = 0; i < MAX_EPS_CHANNELS; i++) {
734 char str[32];
735
736 snprintf(str, 32, "g_tx_fifo_size[%d]", i);
737 seq_printf(seq, "%-30s: %d\n", str, p->g_tx_fifo_size[i]);
738 }
739
740 return 0;
741}
742DEFINE_SHOW_ATTRIBUTE(params);
743
744static int hw_params_show(struct seq_file *seq, void *v)
745{
746 struct dwc2_hsotg *hsotg = seq->private;
747 struct dwc2_hw_params *hw = &hsotg->hw_params;
748
749 print_param(seq, hw, op_mode);
750 print_param(seq, hw, arch);
751 print_param(seq, hw, dma_desc_enable);
752 print_param(seq, hw, enable_dynamic_fifo);
753 print_param(seq, hw, en_multiple_tx_fifo);
754 print_param(seq, hw, rx_fifo_size);
755 print_param(seq, hw, host_nperio_tx_fifo_size);
756 print_param(seq, hw, dev_nperio_tx_fifo_size);
757 print_param(seq, hw, host_perio_tx_fifo_size);
758 print_param(seq, hw, nperio_tx_q_depth);
759 print_param(seq, hw, host_perio_tx_q_depth);
760 print_param(seq, hw, dev_token_q_depth);
761 print_param(seq, hw, max_transfer_size);
762 print_param(seq, hw, max_packet_count);
763 print_param(seq, hw, host_channels);
764 print_param(seq, hw, hs_phy_type);
765 print_param(seq, hw, fs_phy_type);
766 print_param(seq, hw, i2c_enable);
767 print_param(seq, hw, num_dev_ep);
768 print_param(seq, hw, num_dev_perio_in_ep);
769 print_param(seq, hw, total_fifo_size);
770 print_param(seq, hw, power_optimized);
771 print_param(seq, hw, utmi_phy_data_width);
772 print_param_hex(seq, hw, snpsid);
773 print_param_hex(seq, hw, dev_ep_dirs);
774
775 return 0;
776}
777DEFINE_SHOW_ATTRIBUTE(hw_params);
778
779static int dr_mode_show(struct seq_file *seq, void *v)
780{
781 struct dwc2_hsotg *hsotg = seq->private;
782 const char *dr_mode = "";
783
784 device_property_read_string(hsotg->dev, "dr_mode", &dr_mode);
785 seq_printf(seq, "%s\n", dr_mode);
786 return 0;
787}
788DEFINE_SHOW_ATTRIBUTE(dr_mode);
789
790int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
791{
792 int ret;
793 struct dentry *file;
794
795 hsotg->debug_root = debugfs_create_dir(dev_name(hsotg->dev), NULL);
796 if (!hsotg->debug_root) {
797 ret = -ENOMEM;
798 goto err0;
799 }
800
801 file = debugfs_create_file("params", 0444,
802 hsotg->debug_root,
803 hsotg, ¶ms_fops);
804 if (IS_ERR(file))
805 dev_err(hsotg->dev, "%s: failed to create params\n", __func__);
806
807 file = debugfs_create_file("hw_params", 0444,
808 hsotg->debug_root,
809 hsotg, &hw_params_fops);
810 if (IS_ERR(file))
811 dev_err(hsotg->dev, "%s: failed to create hw_params\n",
812 __func__);
813
814 file = debugfs_create_file("dr_mode", 0444,
815 hsotg->debug_root,
816 hsotg, &dr_mode_fops);
817 if (IS_ERR(file))
818 dev_err(hsotg->dev, "%s: failed to create dr_mode\n", __func__);
819
820 /* Add gadget debugfs nodes */
821 dwc2_hsotg_create_debug(hsotg);
822
823 hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset),
824 GFP_KERNEL);
825 if (!hsotg->regset) {
826 ret = -ENOMEM;
827 goto err1;
828 }
829
830 hsotg->regset->regs = dwc2_regs;
831 hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs);
832 hsotg->regset->base = hsotg->regs;
833
834 file = debugfs_create_regset32("regdump", 0444, hsotg->debug_root,
835 hsotg->regset);
836 if (!file) {
837 ret = -ENOMEM;
838 goto err1;
839 }
840
841 return 0;
842err1:
843 debugfs_remove_recursive(hsotg->debug_root);
844err0:
845 return ret;
846}
847
848void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg)
849{
850 debugfs_remove_recursive(hsotg->debug_root);
851 hsotg->debug_root = NULL;
852}