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usb: Introduce DesignWare USB3 DRD Driver
[deliverable/linux.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
5 * All rights reserved.
6 *
7 * Authors: Felipe Balbi <balbi@ti.com>,
8 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions, and the following disclaimer,
15 * without modification.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The names of the above-listed copyright holders may not be used
20 * to endorse or promote products derived from this software without
21 * specific prior written permission.
22 *
23 * ALTERNATIVELY, this software may be distributed under the terms of the
24 * GNU General Public License ("GPL") version 2, as published by the Free
25 * Software Foundation.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
28 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
29 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
31 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
32 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
33 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
34 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
35 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
36 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 */
39
40#include <linux/kernel.h>
41#include <linux/slab.h>
42#include <linux/ptrace.h>
43#include <linux/types.h>
44#include <linux/spinlock.h>
45#include <linux/debugfs.h>
46#include <linux/seq_file.h>
47#include <linux/delay.h>
48
49#include <asm/uaccess.h>
50
51#include "core.h"
52#include "gadget.h"
53#include "io.h"
54
55struct dwc3_register {
56 const char *name;
57 u32 offset;
58};
59
60#define dump_register(nm) \
61{ \
62 .name = __stringify(nm), \
63 .offset = DWC3_ ##nm, \
64}
65
66static const struct dwc3_register dwc3_regs[] = {
67 dump_register(GSBUSCFG0),
68 dump_register(GSBUSCFG1),
69 dump_register(GTXTHRCFG),
70 dump_register(GRXTHRCFG),
71 dump_register(GCTL),
72 dump_register(GEVTEN),
73 dump_register(GSTS),
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_register(DEPCMDPAR2(0)),
246 dump_register(DEPCMDPAR2(1)),
247 dump_register(DEPCMDPAR2(2)),
248 dump_register(DEPCMDPAR2(3)),
249 dump_register(DEPCMDPAR2(4)),
250 dump_register(DEPCMDPAR2(5)),
251 dump_register(DEPCMDPAR2(6)),
252 dump_register(DEPCMDPAR2(7)),
253 dump_register(DEPCMDPAR2(8)),
254 dump_register(DEPCMDPAR2(9)),
255 dump_register(DEPCMDPAR2(10)),
256 dump_register(DEPCMDPAR2(11)),
257 dump_register(DEPCMDPAR2(12)),
258 dump_register(DEPCMDPAR2(13)),
259 dump_register(DEPCMDPAR2(14)),
260 dump_register(DEPCMDPAR2(15)),
261 dump_register(DEPCMDPAR2(16)),
262 dump_register(DEPCMDPAR2(17)),
263 dump_register(DEPCMDPAR2(18)),
264 dump_register(DEPCMDPAR2(19)),
265 dump_register(DEPCMDPAR2(20)),
266 dump_register(DEPCMDPAR2(21)),
267 dump_register(DEPCMDPAR2(22)),
268 dump_register(DEPCMDPAR2(23)),
269 dump_register(DEPCMDPAR2(24)),
270 dump_register(DEPCMDPAR2(25)),
271 dump_register(DEPCMDPAR2(26)),
272 dump_register(DEPCMDPAR2(27)),
273 dump_register(DEPCMDPAR2(28)),
274 dump_register(DEPCMDPAR2(29)),
275 dump_register(DEPCMDPAR2(30)),
276 dump_register(DEPCMDPAR2(31)),
277
278 dump_register(DEPCMDPAR1(0)),
279 dump_register(DEPCMDPAR1(1)),
280 dump_register(DEPCMDPAR1(2)),
281 dump_register(DEPCMDPAR1(3)),
282 dump_register(DEPCMDPAR1(4)),
283 dump_register(DEPCMDPAR1(5)),
284 dump_register(DEPCMDPAR1(6)),
285 dump_register(DEPCMDPAR1(7)),
286 dump_register(DEPCMDPAR1(8)),
287 dump_register(DEPCMDPAR1(9)),
288 dump_register(DEPCMDPAR1(10)),
289 dump_register(DEPCMDPAR1(11)),
290 dump_register(DEPCMDPAR1(12)),
291 dump_register(DEPCMDPAR1(13)),
292 dump_register(DEPCMDPAR1(14)),
293 dump_register(DEPCMDPAR1(15)),
294 dump_register(DEPCMDPAR1(16)),
295 dump_register(DEPCMDPAR1(17)),
296 dump_register(DEPCMDPAR1(18)),
297 dump_register(DEPCMDPAR1(19)),
298 dump_register(DEPCMDPAR1(20)),
299 dump_register(DEPCMDPAR1(21)),
300 dump_register(DEPCMDPAR1(22)),
301 dump_register(DEPCMDPAR1(23)),
302 dump_register(DEPCMDPAR1(24)),
303 dump_register(DEPCMDPAR1(25)),
304 dump_register(DEPCMDPAR1(26)),
305 dump_register(DEPCMDPAR1(27)),
306 dump_register(DEPCMDPAR1(28)),
307 dump_register(DEPCMDPAR1(29)),
308 dump_register(DEPCMDPAR1(30)),
309 dump_register(DEPCMDPAR1(31)),
310
311 dump_register(DEPCMDPAR0(0)),
312 dump_register(DEPCMDPAR0(1)),
313 dump_register(DEPCMDPAR0(2)),
314 dump_register(DEPCMDPAR0(3)),
315 dump_register(DEPCMDPAR0(4)),
316 dump_register(DEPCMDPAR0(5)),
317 dump_register(DEPCMDPAR0(6)),
318 dump_register(DEPCMDPAR0(7)),
319 dump_register(DEPCMDPAR0(8)),
320 dump_register(DEPCMDPAR0(9)),
321 dump_register(DEPCMDPAR0(10)),
322 dump_register(DEPCMDPAR0(11)),
323 dump_register(DEPCMDPAR0(12)),
324 dump_register(DEPCMDPAR0(13)),
325 dump_register(DEPCMDPAR0(14)),
326 dump_register(DEPCMDPAR0(15)),
327 dump_register(DEPCMDPAR0(16)),
328 dump_register(DEPCMDPAR0(17)),
329 dump_register(DEPCMDPAR0(18)),
330 dump_register(DEPCMDPAR0(19)),
331 dump_register(DEPCMDPAR0(20)),
332 dump_register(DEPCMDPAR0(21)),
333 dump_register(DEPCMDPAR0(22)),
334 dump_register(DEPCMDPAR0(23)),
335 dump_register(DEPCMDPAR0(24)),
336 dump_register(DEPCMDPAR0(25)),
337 dump_register(DEPCMDPAR0(26)),
338 dump_register(DEPCMDPAR0(27)),
339 dump_register(DEPCMDPAR0(28)),
340 dump_register(DEPCMDPAR0(29)),
341 dump_register(DEPCMDPAR0(30)),
342 dump_register(DEPCMDPAR0(31)),
343
344 dump_register(DEPCMD(0)),
345 dump_register(DEPCMD(1)),
346 dump_register(DEPCMD(2)),
347 dump_register(DEPCMD(3)),
348 dump_register(DEPCMD(4)),
349 dump_register(DEPCMD(5)),
350 dump_register(DEPCMD(6)),
351 dump_register(DEPCMD(7)),
352 dump_register(DEPCMD(8)),
353 dump_register(DEPCMD(9)),
354 dump_register(DEPCMD(10)),
355 dump_register(DEPCMD(11)),
356 dump_register(DEPCMD(12)),
357 dump_register(DEPCMD(13)),
358 dump_register(DEPCMD(14)),
359 dump_register(DEPCMD(15)),
360 dump_register(DEPCMD(16)),
361 dump_register(DEPCMD(17)),
362 dump_register(DEPCMD(18)),
363 dump_register(DEPCMD(19)),
364 dump_register(DEPCMD(20)),
365 dump_register(DEPCMD(21)),
366 dump_register(DEPCMD(22)),
367 dump_register(DEPCMD(23)),
368 dump_register(DEPCMD(24)),
369 dump_register(DEPCMD(25)),
370 dump_register(DEPCMD(26)),
371 dump_register(DEPCMD(27)),
372 dump_register(DEPCMD(28)),
373 dump_register(DEPCMD(29)),
374 dump_register(DEPCMD(30)),
375 dump_register(DEPCMD(31)),
376
377 dump_register(OCFG),
378 dump_register(OCTL),
379 dump_register(OEVTEN),
380 dump_register(OSTS),
381};
382
383static int dwc3_regdump_show(struct seq_file *s, void *unused)
384{
385 struct dwc3 *dwc = s->private;
386 int i;
387
388 seq_printf(s, "DesignWare USB3 Core Register Dump\n");
389
390 for (i = 0; i < ARRAY_SIZE(dwc3_regs); i++) {
391 seq_printf(s, "%-20s : %08x\n", dwc3_regs[i].name,
392 dwc3_readl(dwc->regs, dwc3_regs[i].offset));
393 }
394
395 return 0;
396}
397
398static int dwc3_regdump_open(struct inode *inode, struct file *file)
399{
400 return single_open(file, dwc3_regdump_show, inode->i_private);
401}
402
403static const struct file_operations dwc3_regdump_fops = {
404 .open = dwc3_regdump_open,
405 .read = seq_read,
406 .release = single_release,
407};
408
409
410static int dwc3_send_testmode_cmd(struct dwc3 *dwc, int mode)
411{
412 u32 timeout = 250;
413
414 dwc3_writel(dwc->regs, DWC3_DGCMDPAR, mode);
415 dwc3_writel(dwc->regs, DWC3_DGCMD, DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK |
416 DWC3_DEPCMD_CMDACT);
417 do {
418 u32 reg;
419
420 reg = dwc3_readl(dwc->regs, DWC3_DGCMD);
421 if (!(reg & DWC3_DEPCMD_CMDACT))
422 return 0;
423 timeout--;
424 if (!timeout)
425 return -ETIMEDOUT;
426 mdelay(1);
427 } while (1);
428}
429
430static struct dwc3_trb_hw trb_0 __aligned(16);
431static struct dwc3_trb_hw trb_1 __aligned(16);
432
433#define BUF_SIZE 4096
434static int dwc3_testmode_open(struct inode *inode, struct file *file)
435{
436 struct dwc3 *dwc = inode->i_private;
437 struct dwc3_gadget_ep_cmd_params par0;
438 struct dwc3_gadget_ep_cmd_params par1;
439 struct dwc3_trb trb;
440 int ret;
441 u8 *buf0;
442 u8 *buf1;
443
444 buf0 = kmalloc(BUF_SIZE, GFP_KERNEL);
445 if (!buf0)
446 return -ENOMEM;
447 buf1 = kmalloc(BUF_SIZE, GFP_KERNEL);
448 if (!buf1)
449 return -ENOMEM;
450
451 memset(buf0, 0xaa, BUF_SIZE);
452 memset(buf1, 0x33, BUF_SIZE);
453
454 memset(&trb, 0, sizeof(trb));
455 memset(&par0, 0, sizeof(par0));
456 memset(&par1, 0, sizeof(par1));
457
458 trb.lst = 1;
459 trb.trbctl = DWC3_TRBCTL_NORMAL;
460 trb.length = BUF_SIZE;
461 trb.hwo = 1;
462
463 trb.bplh = virt_to_phys(buf0);
464 dwc3_trb_to_hw(&trb, &trb_0);
465
466 trb.bplh = virt_to_phys(buf1);
467 dwc3_trb_to_hw(&trb, &trb_1);
468
469 par0.param0.depstrtxfer.transfer_desc_addr_high =
470 upper_32_bits(virt_to_phys(&trb_0));
471 par0.param1.depstrtxfer.transfer_desc_addr_low =
472 lower_32_bits(virt_to_phys(&trb_0));
473
474 par1.param0.depstrtxfer.transfer_desc_addr_high =
475 upper_32_bits(virt_to_phys(&trb_1));
476 par1.param1.depstrtxfer.transfer_desc_addr_low =
477 lower_32_bits(virt_to_phys(&trb_1));
478
479 dwc3_send_testmode_cmd(dwc, 1);
480
481 ret = dwc3_send_gadget_ep_cmd(dwc, 0, DWC3_DEPCMD_STARTTRANSFER, &par0);
482 ret = dwc3_send_gadget_ep_cmd(dwc, 1, DWC3_DEPCMD_STARTTRANSFER, &par1);
483
484 dwc3_send_testmode_cmd(dwc, 0);
485 return -EBUSY;
486}
487
488static const struct file_operations dwc3_testmode_fops = {
489 .open = dwc3_testmode_open,
490 .read = seq_read,
491 .release = single_release,
492};
493
494int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
495{
496 struct dentry *root;
497 struct dentry *file;
498 int ret;
499
500 root = debugfs_create_dir(dev_name(dwc->dev), NULL);
501 if (IS_ERR(root)){
502 ret = PTR_ERR(root);
503 goto err0;
504 }
505
506 dwc->root = root;
507
508 file = debugfs_create_file("regdump", S_IRUGO, root, dwc,
509 &dwc3_regdump_fops);
510 if (IS_ERR(file)) {
511 ret = PTR_ERR(file);
512 goto err1;
513 }
514 file = debugfs_create_file("testmode", S_IRUGO, root, dwc,
515 &dwc3_testmode_fops);
516 if (IS_ERR(file)) {
517 ret = PTR_ERR(file);
518 goto err1;
519 }
520
521 return 0;
522
523err1:
524 debugfs_remove_recursive(root);
525
526err0:
527 return ret;
528}
529
530void __devexit dwc3_debugfs_exit(struct dwc3 *dwc)
531{
532 debugfs_remove_recursive(dwc->root);
533 dwc->root = NULL;
534}
Linux kernel - Deliverables
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