bpf: Prevent memory disambiguation attack
[linux/fpc-iii.git] / drivers / usb / dwc2 / debugfs.c
blobf4650a88be7834a9d42f4c37eba696df929c6fa0
1 // SPDX-License-Identifier: GPL-2.0
2 /**
3 * debugfs.c - Designware USB2 DRD controller debugfs
5 * Copyright (C) 2015 Intel Corporation
6 * Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
7 */
9 #include <linux/spinlock.h>
10 #include <linux/debugfs.h>
11 #include <linux/seq_file.h>
12 #include <linux/uaccess.h>
14 #include "core.h"
15 #include "debug.h"
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.
24 * This debugfs entry modify the current usb test mode.
26 static ssize_t testmode_write(struct file *file, const char __user *ubuf, size_t
27 count, loff_t *ppos)
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];
35 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
36 return -EFAULT;
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;
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;
57 /**
58 * testmode_show - debugfs: show usb test mode state
59 * @seq: The seq file to write to.
60 * @v: Unused parameter.
62 * This debugfs entry shows which usb test mode is currently enabled.
64 static int testmode_show(struct seq_file *s, void *unused)
66 struct dwc2_hsotg *hsotg = s->private;
67 unsigned long flags;
68 int dctl;
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);
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);
99 return 0;
102 static int testmode_open(struct inode *inode, struct file *file)
104 return single_open(file, testmode_show, inode->i_private);
107 static 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,
117 * state_show - debugfs: show overall driver and device state.
118 * @seq: The seq file to write to.
119 * @v: Unused parameter.
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.
125 static int state_show(struct seq_file *seq, void *v)
127 struct dwc2_hsotg *hsotg = seq->private;
128 void __iomem *regs = hsotg->regs;
129 int idx;
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));
136 seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n",
137 dwc2_readl(regs + DIEPMSK), dwc2_readl(regs + DOEPMSK));
139 seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n",
140 dwc2_readl(regs + GINTMSK),
141 dwc2_readl(regs + GINTSTS));
143 seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n",
144 dwc2_readl(regs + DAINTMSK),
145 dwc2_readl(regs + DAINT));
147 seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n",
148 dwc2_readl(regs + GNPTXSTS),
149 dwc2_readl(regs + GRXSTSR));
151 seq_puts(seq, "\nEndpoint status:\n");
153 for (idx = 0; idx < hsotg->num_of_eps; idx++) {
154 u32 in, out;
156 in = dwc2_readl(regs + DIEPCTL(idx));
157 out = dwc2_readl(regs + DOEPCTL(idx));
159 seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x",
160 idx, in, out);
162 in = dwc2_readl(regs + DIEPTSIZ(idx));
163 out = dwc2_readl(regs + DOEPTSIZ(idx));
165 seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x",
166 in, out);
168 seq_puts(seq, "\n");
171 return 0;
174 static int state_open(struct inode *inode, struct file *file)
176 return single_open(file, state_show, inode->i_private);
179 static const struct file_operations state_fops = {
180 .owner = THIS_MODULE,
181 .open = state_open,
182 .read = seq_read,
183 .llseek = seq_lseek,
184 .release = single_release,
188 * fifo_show - debugfs: show the fifo information
189 * @seq: The seq_file to write data to.
190 * @v: Unused parameter.
192 * Show the FIFO information for the overall fifo and all the
193 * periodic transmission FIFOs.
195 static int fifo_show(struct seq_file *seq, void *v)
197 struct dwc2_hsotg *hsotg = seq->private;
198 void __iomem *regs = hsotg->regs;
199 u32 val;
200 int idx;
202 seq_puts(seq, "Non-periodic FIFOs:\n");
203 seq_printf(seq, "RXFIFO: Size %d\n", dwc2_readl(regs + GRXFSIZ));
205 val = dwc2_readl(regs + GNPTXFSIZ);
206 seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n",
207 val >> FIFOSIZE_DEPTH_SHIFT,
208 val & FIFOSIZE_STARTADDR_MASK);
210 seq_puts(seq, "\nPeriodic TXFIFOs:\n");
212 for (idx = 1; idx < hsotg->num_of_eps; idx++) {
213 val = dwc2_readl(regs + DPTXFSIZN(idx));
215 seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx,
216 val >> FIFOSIZE_DEPTH_SHIFT,
217 val & FIFOSIZE_STARTADDR_MASK);
220 return 0;
223 static int fifo_open(struct inode *inode, struct file *file)
225 return single_open(file, fifo_show, inode->i_private);
228 static const struct file_operations fifo_fops = {
229 .owner = THIS_MODULE,
230 .open = fifo_open,
231 .read = seq_read,
232 .llseek = seq_lseek,
233 .release = single_release,
236 static const char *decode_direction(int is_in)
238 return is_in ? "in" : "out";
242 * ep_show - debugfs: show the state of an endpoint.
243 * @seq: The seq_file to write data to.
244 * @v: Unused parameter.
246 * This debugfs entry shows the state of the given endpoint (one is
247 * registered for each available).
249 static int ep_show(struct seq_file *seq, void *v)
251 struct dwc2_hsotg_ep *ep = seq->private;
252 struct dwc2_hsotg *hsotg = ep->parent;
253 struct dwc2_hsotg_req *req;
254 void __iomem *regs = hsotg->regs;
255 int index = ep->index;
256 int show_limit = 15;
257 unsigned long flags;
259 seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n",
260 ep->index, ep->ep.name, decode_direction(ep->dir_in));
262 /* first show the register state */
264 seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n",
265 dwc2_readl(regs + DIEPCTL(index)),
266 dwc2_readl(regs + DOEPCTL(index)));
268 seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n",
269 dwc2_readl(regs + DIEPDMA(index)),
270 dwc2_readl(regs + DOEPDMA(index)));
272 seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n",
273 dwc2_readl(regs + DIEPINT(index)),
274 dwc2_readl(regs + DOEPINT(index)));
276 seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n",
277 dwc2_readl(regs + DIEPTSIZ(index)),
278 dwc2_readl(regs + DOEPTSIZ(index)));
280 seq_puts(seq, "\n");
281 seq_printf(seq, "mps %d\n", ep->ep.maxpacket);
282 seq_printf(seq, "total_data=%ld\n", ep->total_data);
284 seq_printf(seq, "request list (%p,%p):\n",
285 ep->queue.next, ep->queue.prev);
287 spin_lock_irqsave(&hsotg->lock, flags);
289 list_for_each_entry(req, &ep->queue, queue) {
290 if (--show_limit < 0) {
291 seq_puts(seq, "not showing more requests...\n");
292 break;
295 seq_printf(seq, "%c req %p: %d bytes @%p, ",
296 req == ep->req ? '*' : ' ',
297 req, req->req.length, req->req.buf);
298 seq_printf(seq, "%d done, res %d\n",
299 req->req.actual, req->req.status);
302 spin_unlock_irqrestore(&hsotg->lock, flags);
304 return 0;
307 static int ep_open(struct inode *inode, struct file *file)
309 return single_open(file, ep_show, inode->i_private);
312 static const struct file_operations ep_fops = {
313 .owner = THIS_MODULE,
314 .open = ep_open,
315 .read = seq_read,
316 .llseek = seq_lseek,
317 .release = single_release,
321 * dwc2_hsotg_create_debug - create debugfs directory and files
322 * @hsotg: The driver state
324 * Create the debugfs files to allow the user to get information
325 * about the state of the system. The directory name is created
326 * with the same name as the device itself, in case we end up
327 * with multiple blocks in future systems.
329 static void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg)
331 struct dentry *root;
332 struct dentry *file;
333 unsigned int epidx;
335 root = hsotg->debug_root;
337 /* create general state file */
339 file = debugfs_create_file("state", 0444, root, hsotg, &state_fops);
340 if (IS_ERR(file))
341 dev_err(hsotg->dev, "%s: failed to create state\n", __func__);
343 file = debugfs_create_file("testmode", 0644, root, hsotg,
344 &testmode_fops);
345 if (IS_ERR(file))
346 dev_err(hsotg->dev, "%s: failed to create testmode\n",
347 __func__);
349 file = debugfs_create_file("fifo", 0444, root, hsotg, &fifo_fops);
350 if (IS_ERR(file))
351 dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__);
353 /* Create one file for each out endpoint */
354 for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) {
355 struct dwc2_hsotg_ep *ep;
357 ep = hsotg->eps_out[epidx];
358 if (ep) {
359 file = debugfs_create_file(ep->name, 0444,
360 root, ep, &ep_fops);
361 if (IS_ERR(file))
362 dev_err(hsotg->dev, "failed to create %s debug file\n",
363 ep->name);
366 /* Create one file for each in endpoint. EP0 is handled with out eps */
367 for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) {
368 struct dwc2_hsotg_ep *ep;
370 ep = hsotg->eps_in[epidx];
371 if (ep) {
372 file = debugfs_create_file(ep->name, 0444,
373 root, ep, &ep_fops);
374 if (IS_ERR(file))
375 dev_err(hsotg->dev, "failed to create %s debug file\n",
376 ep->name);
380 #else
381 static inline void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) {}
382 #endif
384 /* dwc2_hsotg_delete_debug is removed as cleanup in done in dwc2_debugfs_exit */
386 #define dump_register(nm) \
388 .name = #nm, \
389 .offset = nm, \
392 static const struct debugfs_reg32 dwc2_regs[] = {
394 * Accessing registers like this can trigger mode mismatch interrupt.
395 * However, according to dwc2 databook, the register access, in this
396 * case, is completed on the processor bus but is ignored by the core
397 * and does not affect its operation.
399 dump_register(GOTGCTL),
400 dump_register(GOTGINT),
401 dump_register(GAHBCFG),
402 dump_register(GUSBCFG),
403 dump_register(GRSTCTL),
404 dump_register(GINTSTS),
405 dump_register(GINTMSK),
406 dump_register(GRXSTSR),
407 dump_register(GRXSTSP),
408 dump_register(GRXFSIZ),
409 dump_register(GNPTXFSIZ),
410 dump_register(GNPTXSTS),
411 dump_register(GI2CCTL),
412 dump_register(GPVNDCTL),
413 dump_register(GGPIO),
414 dump_register(GUID),
415 dump_register(GSNPSID),
416 dump_register(GHWCFG1),
417 dump_register(GHWCFG2),
418 dump_register(GHWCFG3),
419 dump_register(GHWCFG4),
420 dump_register(GLPMCFG),
421 dump_register(GPWRDN),
422 dump_register(GDFIFOCFG),
423 dump_register(ADPCTL),
424 dump_register(HPTXFSIZ),
425 dump_register(DPTXFSIZN(1)),
426 dump_register(DPTXFSIZN(2)),
427 dump_register(DPTXFSIZN(3)),
428 dump_register(DPTXFSIZN(4)),
429 dump_register(DPTXFSIZN(5)),
430 dump_register(DPTXFSIZN(6)),
431 dump_register(DPTXFSIZN(7)),
432 dump_register(DPTXFSIZN(8)),
433 dump_register(DPTXFSIZN(9)),
434 dump_register(DPTXFSIZN(10)),
435 dump_register(DPTXFSIZN(11)),
436 dump_register(DPTXFSIZN(12)),
437 dump_register(DPTXFSIZN(13)),
438 dump_register(DPTXFSIZN(14)),
439 dump_register(DPTXFSIZN(15)),
440 dump_register(DCFG),
441 dump_register(DCTL),
442 dump_register(DSTS),
443 dump_register(DIEPMSK),
444 dump_register(DOEPMSK),
445 dump_register(DAINT),
446 dump_register(DAINTMSK),
447 dump_register(DTKNQR1),
448 dump_register(DTKNQR2),
449 dump_register(DTKNQR3),
450 dump_register(DTKNQR4),
451 dump_register(DVBUSDIS),
452 dump_register(DVBUSPULSE),
453 dump_register(DIEPCTL(0)),
454 dump_register(DIEPCTL(1)),
455 dump_register(DIEPCTL(2)),
456 dump_register(DIEPCTL(3)),
457 dump_register(DIEPCTL(4)),
458 dump_register(DIEPCTL(5)),
459 dump_register(DIEPCTL(6)),
460 dump_register(DIEPCTL(7)),
461 dump_register(DIEPCTL(8)),
462 dump_register(DIEPCTL(9)),
463 dump_register(DIEPCTL(10)),
464 dump_register(DIEPCTL(11)),
465 dump_register(DIEPCTL(12)),
466 dump_register(DIEPCTL(13)),
467 dump_register(DIEPCTL(14)),
468 dump_register(DIEPCTL(15)),
469 dump_register(DOEPCTL(0)),
470 dump_register(DOEPCTL(1)),
471 dump_register(DOEPCTL(2)),
472 dump_register(DOEPCTL(3)),
473 dump_register(DOEPCTL(4)),
474 dump_register(DOEPCTL(5)),
475 dump_register(DOEPCTL(6)),
476 dump_register(DOEPCTL(7)),
477 dump_register(DOEPCTL(8)),
478 dump_register(DOEPCTL(9)),
479 dump_register(DOEPCTL(10)),
480 dump_register(DOEPCTL(11)),
481 dump_register(DOEPCTL(12)),
482 dump_register(DOEPCTL(13)),
483 dump_register(DOEPCTL(14)),
484 dump_register(DOEPCTL(15)),
485 dump_register(DIEPINT(0)),
486 dump_register(DIEPINT(1)),
487 dump_register(DIEPINT(2)),
488 dump_register(DIEPINT(3)),
489 dump_register(DIEPINT(4)),
490 dump_register(DIEPINT(5)),
491 dump_register(DIEPINT(6)),
492 dump_register(DIEPINT(7)),
493 dump_register(DIEPINT(8)),
494 dump_register(DIEPINT(9)),
495 dump_register(DIEPINT(10)),
496 dump_register(DIEPINT(11)),
497 dump_register(DIEPINT(12)),
498 dump_register(DIEPINT(13)),
499 dump_register(DIEPINT(14)),
500 dump_register(DIEPINT(15)),
501 dump_register(DOEPINT(0)),
502 dump_register(DOEPINT(1)),
503 dump_register(DOEPINT(2)),
504 dump_register(DOEPINT(3)),
505 dump_register(DOEPINT(4)),
506 dump_register(DOEPINT(5)),
507 dump_register(DOEPINT(6)),
508 dump_register(DOEPINT(7)),
509 dump_register(DOEPINT(8)),
510 dump_register(DOEPINT(9)),
511 dump_register(DOEPINT(10)),
512 dump_register(DOEPINT(11)),
513 dump_register(DOEPINT(12)),
514 dump_register(DOEPINT(13)),
515 dump_register(DOEPINT(14)),
516 dump_register(DOEPINT(15)),
517 dump_register(DIEPTSIZ(0)),
518 dump_register(DIEPTSIZ(1)),
519 dump_register(DIEPTSIZ(2)),
520 dump_register(DIEPTSIZ(3)),
521 dump_register(DIEPTSIZ(4)),
522 dump_register(DIEPTSIZ(5)),
523 dump_register(DIEPTSIZ(6)),
524 dump_register(DIEPTSIZ(7)),
525 dump_register(DIEPTSIZ(8)),
526 dump_register(DIEPTSIZ(9)),
527 dump_register(DIEPTSIZ(10)),
528 dump_register(DIEPTSIZ(11)),
529 dump_register(DIEPTSIZ(12)),
530 dump_register(DIEPTSIZ(13)),
531 dump_register(DIEPTSIZ(14)),
532 dump_register(DIEPTSIZ(15)),
533 dump_register(DOEPTSIZ(0)),
534 dump_register(DOEPTSIZ(1)),
535 dump_register(DOEPTSIZ(2)),
536 dump_register(DOEPTSIZ(3)),
537 dump_register(DOEPTSIZ(4)),
538 dump_register(DOEPTSIZ(5)),
539 dump_register(DOEPTSIZ(6)),
540 dump_register(DOEPTSIZ(7)),
541 dump_register(DOEPTSIZ(8)),
542 dump_register(DOEPTSIZ(9)),
543 dump_register(DOEPTSIZ(10)),
544 dump_register(DOEPTSIZ(11)),
545 dump_register(DOEPTSIZ(12)),
546 dump_register(DOEPTSIZ(13)),
547 dump_register(DOEPTSIZ(14)),
548 dump_register(DOEPTSIZ(15)),
549 dump_register(DIEPDMA(0)),
550 dump_register(DIEPDMA(1)),
551 dump_register(DIEPDMA(2)),
552 dump_register(DIEPDMA(3)),
553 dump_register(DIEPDMA(4)),
554 dump_register(DIEPDMA(5)),
555 dump_register(DIEPDMA(6)),
556 dump_register(DIEPDMA(7)),
557 dump_register(DIEPDMA(8)),
558 dump_register(DIEPDMA(9)),
559 dump_register(DIEPDMA(10)),
560 dump_register(DIEPDMA(11)),
561 dump_register(DIEPDMA(12)),
562 dump_register(DIEPDMA(13)),
563 dump_register(DIEPDMA(14)),
564 dump_register(DIEPDMA(15)),
565 dump_register(DOEPDMA(0)),
566 dump_register(DOEPDMA(1)),
567 dump_register(DOEPDMA(2)),
568 dump_register(DOEPDMA(3)),
569 dump_register(DOEPDMA(4)),
570 dump_register(DOEPDMA(5)),
571 dump_register(DOEPDMA(6)),
572 dump_register(DOEPDMA(7)),
573 dump_register(DOEPDMA(8)),
574 dump_register(DOEPDMA(9)),
575 dump_register(DOEPDMA(10)),
576 dump_register(DOEPDMA(11)),
577 dump_register(DOEPDMA(12)),
578 dump_register(DOEPDMA(13)),
579 dump_register(DOEPDMA(14)),
580 dump_register(DOEPDMA(15)),
581 dump_register(DTXFSTS(0)),
582 dump_register(DTXFSTS(1)),
583 dump_register(DTXFSTS(2)),
584 dump_register(DTXFSTS(3)),
585 dump_register(DTXFSTS(4)),
586 dump_register(DTXFSTS(5)),
587 dump_register(DTXFSTS(6)),
588 dump_register(DTXFSTS(7)),
589 dump_register(DTXFSTS(8)),
590 dump_register(DTXFSTS(9)),
591 dump_register(DTXFSTS(10)),
592 dump_register(DTXFSTS(11)),
593 dump_register(DTXFSTS(12)),
594 dump_register(DTXFSTS(13)),
595 dump_register(DTXFSTS(14)),
596 dump_register(DTXFSTS(15)),
597 dump_register(PCGCTL),
598 dump_register(HCFG),
599 dump_register(HFIR),
600 dump_register(HFNUM),
601 dump_register(HPTXSTS),
602 dump_register(HAINT),
603 dump_register(HAINTMSK),
604 dump_register(HFLBADDR),
605 dump_register(HPRT0),
606 dump_register(HCCHAR(0)),
607 dump_register(HCCHAR(1)),
608 dump_register(HCCHAR(2)),
609 dump_register(HCCHAR(3)),
610 dump_register(HCCHAR(4)),
611 dump_register(HCCHAR(5)),
612 dump_register(HCCHAR(6)),
613 dump_register(HCCHAR(7)),
614 dump_register(HCCHAR(8)),
615 dump_register(HCCHAR(9)),
616 dump_register(HCCHAR(10)),
617 dump_register(HCCHAR(11)),
618 dump_register(HCCHAR(12)),
619 dump_register(HCCHAR(13)),
620 dump_register(HCCHAR(14)),
621 dump_register(HCCHAR(15)),
622 dump_register(HCSPLT(0)),
623 dump_register(HCSPLT(1)),
624 dump_register(HCSPLT(2)),
625 dump_register(HCSPLT(3)),
626 dump_register(HCSPLT(4)),
627 dump_register(HCSPLT(5)),
628 dump_register(HCSPLT(6)),
629 dump_register(HCSPLT(7)),
630 dump_register(HCSPLT(8)),
631 dump_register(HCSPLT(9)),
632 dump_register(HCSPLT(10)),
633 dump_register(HCSPLT(11)),
634 dump_register(HCSPLT(12)),
635 dump_register(HCSPLT(13)),
636 dump_register(HCSPLT(14)),
637 dump_register(HCSPLT(15)),
638 dump_register(HCINT(0)),
639 dump_register(HCINT(1)),
640 dump_register(HCINT(2)),
641 dump_register(HCINT(3)),
642 dump_register(HCINT(4)),
643 dump_register(HCINT(5)),
644 dump_register(HCINT(6)),
645 dump_register(HCINT(7)),
646 dump_register(HCINT(8)),
647 dump_register(HCINT(9)),
648 dump_register(HCINT(10)),
649 dump_register(HCINT(11)),
650 dump_register(HCINT(12)),
651 dump_register(HCINT(13)),
652 dump_register(HCINT(14)),
653 dump_register(HCINT(15)),
654 dump_register(HCINTMSK(0)),
655 dump_register(HCINTMSK(1)),
656 dump_register(HCINTMSK(2)),
657 dump_register(HCINTMSK(3)),
658 dump_register(HCINTMSK(4)),
659 dump_register(HCINTMSK(5)),
660 dump_register(HCINTMSK(6)),
661 dump_register(HCINTMSK(7)),
662 dump_register(HCINTMSK(8)),
663 dump_register(HCINTMSK(9)),
664 dump_register(HCINTMSK(10)),
665 dump_register(HCINTMSK(11)),
666 dump_register(HCINTMSK(12)),
667 dump_register(HCINTMSK(13)),
668 dump_register(HCINTMSK(14)),
669 dump_register(HCINTMSK(15)),
670 dump_register(HCTSIZ(0)),
671 dump_register(HCTSIZ(1)),
672 dump_register(HCTSIZ(2)),
673 dump_register(HCTSIZ(3)),
674 dump_register(HCTSIZ(4)),
675 dump_register(HCTSIZ(5)),
676 dump_register(HCTSIZ(6)),
677 dump_register(HCTSIZ(7)),
678 dump_register(HCTSIZ(8)),
679 dump_register(HCTSIZ(9)),
680 dump_register(HCTSIZ(10)),
681 dump_register(HCTSIZ(11)),
682 dump_register(HCTSIZ(12)),
683 dump_register(HCTSIZ(13)),
684 dump_register(HCTSIZ(14)),
685 dump_register(HCTSIZ(15)),
686 dump_register(HCDMA(0)),
687 dump_register(HCDMA(1)),
688 dump_register(HCDMA(2)),
689 dump_register(HCDMA(3)),
690 dump_register(HCDMA(4)),
691 dump_register(HCDMA(5)),
692 dump_register(HCDMA(6)),
693 dump_register(HCDMA(7)),
694 dump_register(HCDMA(8)),
695 dump_register(HCDMA(9)),
696 dump_register(HCDMA(10)),
697 dump_register(HCDMA(11)),
698 dump_register(HCDMA(12)),
699 dump_register(HCDMA(13)),
700 dump_register(HCDMA(14)),
701 dump_register(HCDMA(15)),
702 dump_register(HCDMAB(0)),
703 dump_register(HCDMAB(1)),
704 dump_register(HCDMAB(2)),
705 dump_register(HCDMAB(3)),
706 dump_register(HCDMAB(4)),
707 dump_register(HCDMAB(5)),
708 dump_register(HCDMAB(6)),
709 dump_register(HCDMAB(7)),
710 dump_register(HCDMAB(8)),
711 dump_register(HCDMAB(9)),
712 dump_register(HCDMAB(10)),
713 dump_register(HCDMAB(11)),
714 dump_register(HCDMAB(12)),
715 dump_register(HCDMAB(13)),
716 dump_register(HCDMAB(14)),
717 dump_register(HCDMAB(15)),
720 #define print_param(_seq, _ptr, _param) \
721 seq_printf((_seq), "%-30s: %d\n", #_param, (_ptr)->_param)
723 #define print_param_hex(_seq, _ptr, _param) \
724 seq_printf((_seq), "%-30s: 0x%x\n", #_param, (_ptr)->_param)
726 static int params_show(struct seq_file *seq, void *v)
728 struct dwc2_hsotg *hsotg = seq->private;
729 struct dwc2_core_params *p = &hsotg->params;
730 int i;
732 print_param(seq, p, otg_cap);
733 print_param(seq, p, dma_desc_enable);
734 print_param(seq, p, dma_desc_fs_enable);
735 print_param(seq, p, speed);
736 print_param(seq, p, enable_dynamic_fifo);
737 print_param(seq, p, en_multiple_tx_fifo);
738 print_param(seq, p, host_rx_fifo_size);
739 print_param(seq, p, host_nperio_tx_fifo_size);
740 print_param(seq, p, host_perio_tx_fifo_size);
741 print_param(seq, p, max_transfer_size);
742 print_param(seq, p, max_packet_count);
743 print_param(seq, p, host_channels);
744 print_param(seq, p, phy_type);
745 print_param(seq, p, phy_utmi_width);
746 print_param(seq, p, phy_ulpi_ddr);
747 print_param(seq, p, phy_ulpi_ext_vbus);
748 print_param(seq, p, i2c_enable);
749 print_param(seq, p, ulpi_fs_ls);
750 print_param(seq, p, host_support_fs_ls_low_power);
751 print_param(seq, p, host_ls_low_power_phy_clk);
752 print_param(seq, p, ts_dline);
753 print_param(seq, p, reload_ctl);
754 print_param_hex(seq, p, ahbcfg);
755 print_param(seq, p, uframe_sched);
756 print_param(seq, p, external_id_pin_ctl);
757 print_param(seq, p, hibernation);
758 print_param(seq, p, host_dma);
759 print_param(seq, p, g_dma);
760 print_param(seq, p, g_dma_desc);
761 print_param(seq, p, g_rx_fifo_size);
762 print_param(seq, p, g_np_tx_fifo_size);
764 for (i = 0; i < MAX_EPS_CHANNELS; i++) {
765 char str[32];
767 snprintf(str, 32, "g_tx_fifo_size[%d]", i);
768 seq_printf(seq, "%-30s: %d\n", str, p->g_tx_fifo_size[i]);
771 return 0;
774 static int params_open(struct inode *inode, struct file *file)
776 return single_open(file, params_show, inode->i_private);
779 static const struct file_operations params_fops = {
780 .owner = THIS_MODULE,
781 .open = params_open,
782 .read = seq_read,
783 .llseek = seq_lseek,
784 .release = single_release,
787 static int hw_params_show(struct seq_file *seq, void *v)
789 struct dwc2_hsotg *hsotg = seq->private;
790 struct dwc2_hw_params *hw = &hsotg->hw_params;
792 print_param(seq, hw, op_mode);
793 print_param(seq, hw, arch);
794 print_param(seq, hw, dma_desc_enable);
795 print_param(seq, hw, enable_dynamic_fifo);
796 print_param(seq, hw, en_multiple_tx_fifo);
797 print_param(seq, hw, rx_fifo_size);
798 print_param(seq, hw, host_nperio_tx_fifo_size);
799 print_param(seq, hw, dev_nperio_tx_fifo_size);
800 print_param(seq, hw, host_perio_tx_fifo_size);
801 print_param(seq, hw, nperio_tx_q_depth);
802 print_param(seq, hw, host_perio_tx_q_depth);
803 print_param(seq, hw, dev_token_q_depth);
804 print_param(seq, hw, max_transfer_size);
805 print_param(seq, hw, max_packet_count);
806 print_param(seq, hw, host_channels);
807 print_param(seq, hw, hs_phy_type);
808 print_param(seq, hw, fs_phy_type);
809 print_param(seq, hw, i2c_enable);
810 print_param(seq, hw, num_dev_ep);
811 print_param(seq, hw, num_dev_perio_in_ep);
812 print_param(seq, hw, total_fifo_size);
813 print_param(seq, hw, power_optimized);
814 print_param(seq, hw, utmi_phy_data_width);
815 print_param_hex(seq, hw, snpsid);
816 print_param_hex(seq, hw, dev_ep_dirs);
818 return 0;
821 static int hw_params_open(struct inode *inode, struct file *file)
823 return single_open(file, hw_params_show, inode->i_private);
826 static const struct file_operations hw_params_fops = {
827 .owner = THIS_MODULE,
828 .open = hw_params_open,
829 .read = seq_read,
830 .llseek = seq_lseek,
831 .release = single_release,
834 static int dr_mode_show(struct seq_file *seq, void *v)
836 struct dwc2_hsotg *hsotg = seq->private;
837 const char *dr_mode = "";
839 device_property_read_string(hsotg->dev, "dr_mode", &dr_mode);
840 seq_printf(seq, "%s\n", dr_mode);
841 return 0;
844 static int dr_mode_open(struct inode *inode, struct file *file)
846 return single_open(file, dr_mode_show, inode->i_private);
849 static const struct file_operations dr_mode_fops = {
850 .owner = THIS_MODULE,
851 .open = dr_mode_open,
852 .read = seq_read,
853 .llseek = seq_lseek,
854 .release = single_release,
857 int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
859 int ret;
860 struct dentry *file;
862 hsotg->debug_root = debugfs_create_dir(dev_name(hsotg->dev), NULL);
863 if (!hsotg->debug_root) {
864 ret = -ENOMEM;
865 goto err0;
868 file = debugfs_create_file("params", 0444,
869 hsotg->debug_root,
870 hsotg, &params_fops);
871 if (IS_ERR(file))
872 dev_err(hsotg->dev, "%s: failed to create params\n", __func__);
874 file = debugfs_create_file("hw_params", 0444,
875 hsotg->debug_root,
876 hsotg, &hw_params_fops);
877 if (IS_ERR(file))
878 dev_err(hsotg->dev, "%s: failed to create hw_params\n",
879 __func__);
881 file = debugfs_create_file("dr_mode", 0444,
882 hsotg->debug_root,
883 hsotg, &dr_mode_fops);
884 if (IS_ERR(file))
885 dev_err(hsotg->dev, "%s: failed to create dr_mode\n", __func__);
887 /* Add gadget debugfs nodes */
888 dwc2_hsotg_create_debug(hsotg);
890 hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset),
891 GFP_KERNEL);
892 if (!hsotg->regset) {
893 ret = -ENOMEM;
894 goto err1;
897 hsotg->regset->regs = dwc2_regs;
898 hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs);
899 hsotg->regset->base = hsotg->regs;
901 file = debugfs_create_regset32("regdump", 0444, hsotg->debug_root,
902 hsotg->regset);
903 if (!file) {
904 ret = -ENOMEM;
905 goto err1;
908 return 0;
909 err1:
910 debugfs_remove_recursive(hsotg->debug_root);
911 err0:
912 return ret;
915 void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg)
917 debugfs_remove_recursive(hsotg->debug_root);
918 hsotg->debug_root = NULL;