2 * debugfs.c - DesignWare USB3 DRD Controller DebugFS file
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
6 * Authors: Felipe Balbi <balbi@ti.com>,
7 * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions, and the following disclaimer,
14 * without modification.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The names of the above-listed copyright holders may not be used
19 * to endorse or promote products derived from this software without
20 * specific prior written permission.
22 * ALTERNATIVELY, this software may be distributed under the terms of the
23 * GNU General Public License ("GPL") version 2, as published by the Free
24 * Software Foundation.
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
28 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
30 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 #include <linux/kernel.h>
40 #include <linux/slab.h>
41 #include <linux/ptrace.h>
42 #include <linux/types.h>
43 #include <linux/spinlock.h>
44 #include <linux/debugfs.h>
45 #include <linux/seq_file.h>
46 #include <linux/delay.h>
47 #include <linux/uaccess.h>
53 struct dwc3_register {
58 #define dump_register(nm) \
60 .name = __stringify(nm), \
61 .offset = DWC3_ ##nm, \
64 static const struct dwc3_register dwc3_regs[] = {
65 dump_register(GSBUSCFG0),
66 dump_register(GSBUSCFG1),
67 dump_register(GTXTHRCFG),
68 dump_register(GRXTHRCFG),
70 dump_register(GEVTEN),
72 dump_register(GSNPSID),
76 dump_register(GBUSERRADDR0),
77 dump_register(GBUSERRADDR1),
78 dump_register(GPRTBIMAP0),
79 dump_register(GPRTBIMAP1),
80 dump_register(GHWPARAMS0),
81 dump_register(GHWPARAMS1),
82 dump_register(GHWPARAMS2),
83 dump_register(GHWPARAMS3),
84 dump_register(GHWPARAMS4),
85 dump_register(GHWPARAMS5),
86 dump_register(GHWPARAMS6),
87 dump_register(GHWPARAMS7),
88 dump_register(GDBGFIFOSPACE),
89 dump_register(GDBGLTSSM),
90 dump_register(GPRTBIMAP_HS0),
91 dump_register(GPRTBIMAP_HS1),
92 dump_register(GPRTBIMAP_FS0),
93 dump_register(GPRTBIMAP_FS1),
95 dump_register(GUSB2PHYCFG(0)),
96 dump_register(GUSB2PHYCFG(1)),
97 dump_register(GUSB2PHYCFG(2)),
98 dump_register(GUSB2PHYCFG(3)),
99 dump_register(GUSB2PHYCFG(4)),
100 dump_register(GUSB2PHYCFG(5)),
101 dump_register(GUSB2PHYCFG(6)),
102 dump_register(GUSB2PHYCFG(7)),
103 dump_register(GUSB2PHYCFG(8)),
104 dump_register(GUSB2PHYCFG(9)),
105 dump_register(GUSB2PHYCFG(10)),
106 dump_register(GUSB2PHYCFG(11)),
107 dump_register(GUSB2PHYCFG(12)),
108 dump_register(GUSB2PHYCFG(13)),
109 dump_register(GUSB2PHYCFG(14)),
110 dump_register(GUSB2PHYCFG(15)),
112 dump_register(GUSB2I2CCTL(0)),
113 dump_register(GUSB2I2CCTL(1)),
114 dump_register(GUSB2I2CCTL(2)),
115 dump_register(GUSB2I2CCTL(3)),
116 dump_register(GUSB2I2CCTL(4)),
117 dump_register(GUSB2I2CCTL(5)),
118 dump_register(GUSB2I2CCTL(6)),
119 dump_register(GUSB2I2CCTL(7)),
120 dump_register(GUSB2I2CCTL(8)),
121 dump_register(GUSB2I2CCTL(9)),
122 dump_register(GUSB2I2CCTL(10)),
123 dump_register(GUSB2I2CCTL(11)),
124 dump_register(GUSB2I2CCTL(12)),
125 dump_register(GUSB2I2CCTL(13)),
126 dump_register(GUSB2I2CCTL(14)),
127 dump_register(GUSB2I2CCTL(15)),
129 dump_register(GUSB2PHYACC(0)),
130 dump_register(GUSB2PHYACC(1)),
131 dump_register(GUSB2PHYACC(2)),
132 dump_register(GUSB2PHYACC(3)),
133 dump_register(GUSB2PHYACC(4)),
134 dump_register(GUSB2PHYACC(5)),
135 dump_register(GUSB2PHYACC(6)),
136 dump_register(GUSB2PHYACC(7)),
137 dump_register(GUSB2PHYACC(8)),
138 dump_register(GUSB2PHYACC(9)),
139 dump_register(GUSB2PHYACC(10)),
140 dump_register(GUSB2PHYACC(11)),
141 dump_register(GUSB2PHYACC(12)),
142 dump_register(GUSB2PHYACC(13)),
143 dump_register(GUSB2PHYACC(14)),
144 dump_register(GUSB2PHYACC(15)),
146 dump_register(GUSB3PIPECTL(0)),
147 dump_register(GUSB3PIPECTL(1)),
148 dump_register(GUSB3PIPECTL(2)),
149 dump_register(GUSB3PIPECTL(3)),
150 dump_register(GUSB3PIPECTL(4)),
151 dump_register(GUSB3PIPECTL(5)),
152 dump_register(GUSB3PIPECTL(6)),
153 dump_register(GUSB3PIPECTL(7)),
154 dump_register(GUSB3PIPECTL(8)),
155 dump_register(GUSB3PIPECTL(9)),
156 dump_register(GUSB3PIPECTL(10)),
157 dump_register(GUSB3PIPECTL(11)),
158 dump_register(GUSB3PIPECTL(12)),
159 dump_register(GUSB3PIPECTL(13)),
160 dump_register(GUSB3PIPECTL(14)),
161 dump_register(GUSB3PIPECTL(15)),
163 dump_register(GTXFIFOSIZ(0)),
164 dump_register(GTXFIFOSIZ(1)),
165 dump_register(GTXFIFOSIZ(2)),
166 dump_register(GTXFIFOSIZ(3)),
167 dump_register(GTXFIFOSIZ(4)),
168 dump_register(GTXFIFOSIZ(5)),
169 dump_register(GTXFIFOSIZ(6)),
170 dump_register(GTXFIFOSIZ(7)),
171 dump_register(GTXFIFOSIZ(8)),
172 dump_register(GTXFIFOSIZ(9)),
173 dump_register(GTXFIFOSIZ(10)),
174 dump_register(GTXFIFOSIZ(11)),
175 dump_register(GTXFIFOSIZ(12)),
176 dump_register(GTXFIFOSIZ(13)),
177 dump_register(GTXFIFOSIZ(14)),
178 dump_register(GTXFIFOSIZ(15)),
179 dump_register(GTXFIFOSIZ(16)),
180 dump_register(GTXFIFOSIZ(17)),
181 dump_register(GTXFIFOSIZ(18)),
182 dump_register(GTXFIFOSIZ(19)),
183 dump_register(GTXFIFOSIZ(20)),
184 dump_register(GTXFIFOSIZ(21)),
185 dump_register(GTXFIFOSIZ(22)),
186 dump_register(GTXFIFOSIZ(23)),
187 dump_register(GTXFIFOSIZ(24)),
188 dump_register(GTXFIFOSIZ(25)),
189 dump_register(GTXFIFOSIZ(26)),
190 dump_register(GTXFIFOSIZ(27)),
191 dump_register(GTXFIFOSIZ(28)),
192 dump_register(GTXFIFOSIZ(29)),
193 dump_register(GTXFIFOSIZ(30)),
194 dump_register(GTXFIFOSIZ(31)),
196 dump_register(GRXFIFOSIZ(0)),
197 dump_register(GRXFIFOSIZ(1)),
198 dump_register(GRXFIFOSIZ(2)),
199 dump_register(GRXFIFOSIZ(3)),
200 dump_register(GRXFIFOSIZ(4)),
201 dump_register(GRXFIFOSIZ(5)),
202 dump_register(GRXFIFOSIZ(6)),
203 dump_register(GRXFIFOSIZ(7)),
204 dump_register(GRXFIFOSIZ(8)),
205 dump_register(GRXFIFOSIZ(9)),
206 dump_register(GRXFIFOSIZ(10)),
207 dump_register(GRXFIFOSIZ(11)),
208 dump_register(GRXFIFOSIZ(12)),
209 dump_register(GRXFIFOSIZ(13)),
210 dump_register(GRXFIFOSIZ(14)),
211 dump_register(GRXFIFOSIZ(15)),
212 dump_register(GRXFIFOSIZ(16)),
213 dump_register(GRXFIFOSIZ(17)),
214 dump_register(GRXFIFOSIZ(18)),
215 dump_register(GRXFIFOSIZ(19)),
216 dump_register(GRXFIFOSIZ(20)),
217 dump_register(GRXFIFOSIZ(21)),
218 dump_register(GRXFIFOSIZ(22)),
219 dump_register(GRXFIFOSIZ(23)),
220 dump_register(GRXFIFOSIZ(24)),
221 dump_register(GRXFIFOSIZ(25)),
222 dump_register(GRXFIFOSIZ(26)),
223 dump_register(GRXFIFOSIZ(27)),
224 dump_register(GRXFIFOSIZ(28)),
225 dump_register(GRXFIFOSIZ(29)),
226 dump_register(GRXFIFOSIZ(30)),
227 dump_register(GRXFIFOSIZ(31)),
229 dump_register(GEVNTADRLO(0)),
230 dump_register(GEVNTADRHI(0)),
231 dump_register(GEVNTSIZ(0)),
232 dump_register(GEVNTCOUNT(0)),
234 dump_register(GHWPARAMS8),
237 dump_register(DEVTEN),
239 dump_register(DGCMDPAR),
240 dump_register(DGCMD),
241 dump_register(DALEPENA),
243 dump_register(DEPCMDPAR2(0)),
244 dump_register(DEPCMDPAR2(1)),
245 dump_register(DEPCMDPAR2(2)),
246 dump_register(DEPCMDPAR2(3)),
247 dump_register(DEPCMDPAR2(4)),
248 dump_register(DEPCMDPAR2(5)),
249 dump_register(DEPCMDPAR2(6)),
250 dump_register(DEPCMDPAR2(7)),
251 dump_register(DEPCMDPAR2(8)),
252 dump_register(DEPCMDPAR2(9)),
253 dump_register(DEPCMDPAR2(10)),
254 dump_register(DEPCMDPAR2(11)),
255 dump_register(DEPCMDPAR2(12)),
256 dump_register(DEPCMDPAR2(13)),
257 dump_register(DEPCMDPAR2(14)),
258 dump_register(DEPCMDPAR2(15)),
259 dump_register(DEPCMDPAR2(16)),
260 dump_register(DEPCMDPAR2(17)),
261 dump_register(DEPCMDPAR2(18)),
262 dump_register(DEPCMDPAR2(19)),
263 dump_register(DEPCMDPAR2(20)),
264 dump_register(DEPCMDPAR2(21)),
265 dump_register(DEPCMDPAR2(22)),
266 dump_register(DEPCMDPAR2(23)),
267 dump_register(DEPCMDPAR2(24)),
268 dump_register(DEPCMDPAR2(25)),
269 dump_register(DEPCMDPAR2(26)),
270 dump_register(DEPCMDPAR2(27)),
271 dump_register(DEPCMDPAR2(28)),
272 dump_register(DEPCMDPAR2(29)),
273 dump_register(DEPCMDPAR2(30)),
274 dump_register(DEPCMDPAR2(31)),
276 dump_register(DEPCMDPAR1(0)),
277 dump_register(DEPCMDPAR1(1)),
278 dump_register(DEPCMDPAR1(2)),
279 dump_register(DEPCMDPAR1(3)),
280 dump_register(DEPCMDPAR1(4)),
281 dump_register(DEPCMDPAR1(5)),
282 dump_register(DEPCMDPAR1(6)),
283 dump_register(DEPCMDPAR1(7)),
284 dump_register(DEPCMDPAR1(8)),
285 dump_register(DEPCMDPAR1(9)),
286 dump_register(DEPCMDPAR1(10)),
287 dump_register(DEPCMDPAR1(11)),
288 dump_register(DEPCMDPAR1(12)),
289 dump_register(DEPCMDPAR1(13)),
290 dump_register(DEPCMDPAR1(14)),
291 dump_register(DEPCMDPAR1(15)),
292 dump_register(DEPCMDPAR1(16)),
293 dump_register(DEPCMDPAR1(17)),
294 dump_register(DEPCMDPAR1(18)),
295 dump_register(DEPCMDPAR1(19)),
296 dump_register(DEPCMDPAR1(20)),
297 dump_register(DEPCMDPAR1(21)),
298 dump_register(DEPCMDPAR1(22)),
299 dump_register(DEPCMDPAR1(23)),
300 dump_register(DEPCMDPAR1(24)),
301 dump_register(DEPCMDPAR1(25)),
302 dump_register(DEPCMDPAR1(26)),
303 dump_register(DEPCMDPAR1(27)),
304 dump_register(DEPCMDPAR1(28)),
305 dump_register(DEPCMDPAR1(29)),
306 dump_register(DEPCMDPAR1(30)),
307 dump_register(DEPCMDPAR1(31)),
309 dump_register(DEPCMDPAR0(0)),
310 dump_register(DEPCMDPAR0(1)),
311 dump_register(DEPCMDPAR0(2)),
312 dump_register(DEPCMDPAR0(3)),
313 dump_register(DEPCMDPAR0(4)),
314 dump_register(DEPCMDPAR0(5)),
315 dump_register(DEPCMDPAR0(6)),
316 dump_register(DEPCMDPAR0(7)),
317 dump_register(DEPCMDPAR0(8)),
318 dump_register(DEPCMDPAR0(9)),
319 dump_register(DEPCMDPAR0(10)),
320 dump_register(DEPCMDPAR0(11)),
321 dump_register(DEPCMDPAR0(12)),
322 dump_register(DEPCMDPAR0(13)),
323 dump_register(DEPCMDPAR0(14)),
324 dump_register(DEPCMDPAR0(15)),
325 dump_register(DEPCMDPAR0(16)),
326 dump_register(DEPCMDPAR0(17)),
327 dump_register(DEPCMDPAR0(18)),
328 dump_register(DEPCMDPAR0(19)),
329 dump_register(DEPCMDPAR0(20)),
330 dump_register(DEPCMDPAR0(21)),
331 dump_register(DEPCMDPAR0(22)),
332 dump_register(DEPCMDPAR0(23)),
333 dump_register(DEPCMDPAR0(24)),
334 dump_register(DEPCMDPAR0(25)),
335 dump_register(DEPCMDPAR0(26)),
336 dump_register(DEPCMDPAR0(27)),
337 dump_register(DEPCMDPAR0(28)),
338 dump_register(DEPCMDPAR0(29)),
339 dump_register(DEPCMDPAR0(30)),
340 dump_register(DEPCMDPAR0(31)),
342 dump_register(DEPCMD(0)),
343 dump_register(DEPCMD(1)),
344 dump_register(DEPCMD(2)),
345 dump_register(DEPCMD(3)),
346 dump_register(DEPCMD(4)),
347 dump_register(DEPCMD(5)),
348 dump_register(DEPCMD(6)),
349 dump_register(DEPCMD(7)),
350 dump_register(DEPCMD(8)),
351 dump_register(DEPCMD(9)),
352 dump_register(DEPCMD(10)),
353 dump_register(DEPCMD(11)),
354 dump_register(DEPCMD(12)),
355 dump_register(DEPCMD(13)),
356 dump_register(DEPCMD(14)),
357 dump_register(DEPCMD(15)),
358 dump_register(DEPCMD(16)),
359 dump_register(DEPCMD(17)),
360 dump_register(DEPCMD(18)),
361 dump_register(DEPCMD(19)),
362 dump_register(DEPCMD(20)),
363 dump_register(DEPCMD(21)),
364 dump_register(DEPCMD(22)),
365 dump_register(DEPCMD(23)),
366 dump_register(DEPCMD(24)),
367 dump_register(DEPCMD(25)),
368 dump_register(DEPCMD(26)),
369 dump_register(DEPCMD(27)),
370 dump_register(DEPCMD(28)),
371 dump_register(DEPCMD(29)),
372 dump_register(DEPCMD(30)),
373 dump_register(DEPCMD(31)),
377 dump_register(OEVTEN),
381 static int dwc3_regdump_show(struct seq_file *s, void *unused)
383 struct dwc3 *dwc = s->private;
386 seq_printf(s, "DesignWare USB3 Core Register Dump\n");
388 for (i = 0; i < ARRAY_SIZE(dwc3_regs); i++) {
389 seq_printf(s, "%-20s : %08x\n", dwc3_regs[i].name,
390 dwc3_readl(dwc->regs, dwc3_regs[i].offset));
396 static int dwc3_regdump_open(struct inode *inode, struct file *file)
398 return single_open(file, dwc3_regdump_show, inode->i_private);
401 static const struct file_operations dwc3_regdump_fops = {
402 .open = dwc3_regdump_open,
404 .release = single_release,
407 static int dwc3_mode_show(struct seq_file *s, void *unused)
409 struct dwc3 *dwc = s->private;
413 spin_lock_irqsave(&dwc->lock, flags);
414 reg = dwc3_readl(dwc->regs, DWC3_GCTL);
415 spin_unlock_irqrestore(&dwc->lock, flags);
417 switch (DWC3_GCTL_PRTCAP(reg)) {
418 case DWC3_GCTL_PRTCAP_HOST:
419 seq_printf(s, "host\n");
421 case DWC3_GCTL_PRTCAP_DEVICE:
422 seq_printf(s, "device\n");
424 case DWC3_GCTL_PRTCAP_OTG:
425 seq_printf(s, "OTG\n");
428 seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
434 static int dwc3_mode_open(struct inode *inode, struct file *file)
436 return single_open(file, dwc3_mode_show, inode->i_private);
439 static ssize_t dwc3_mode_write(struct file *file,
440 const char __user *ubuf, size_t count, loff_t *ppos)
442 struct seq_file *s = file->private_data;
443 struct dwc3 *dwc = s->private;
448 if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
451 if (!strncmp(buf, "host", 4))
452 mode |= DWC3_GCTL_PRTCAP_HOST;
454 if (!strncmp(buf, "device", 6))
455 mode |= DWC3_GCTL_PRTCAP_DEVICE;
457 if (!strncmp(buf, "otg", 3))
458 mode |= DWC3_GCTL_PRTCAP_OTG;
461 spin_lock_irqsave(&dwc->lock, flags);
462 dwc3_set_mode(dwc, mode);
463 spin_unlock_irqrestore(&dwc->lock, flags);
468 static const struct file_operations dwc3_mode_fops = {
469 .open = dwc3_mode_open,
470 .write = dwc3_mode_write,
473 .release = single_release,
476 int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
482 root = debugfs_create_dir(dev_name(dwc->dev), NULL);
490 file = debugfs_create_file("regdump", S_IRUGO, root, dwc,
497 file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
498 dwc, &dwc3_mode_fops);
507 debugfs_remove_recursive(root);
513 void __devexit dwc3_debugfs_exit(struct dwc3 *dwc)
515 debugfs_remove_recursive(dwc->root);