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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 | 65 | static 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), | |
475c8beb | 73 | dump_register(GUCTL1), |
72246da4 FB |
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 | ||
2eb88016 FB |
245 | dump_ep_register_set(0), |
246 | dump_ep_register_set(1), | |
247 | dump_ep_register_set(2), | |
248 | dump_ep_register_set(3), | |
249 | dump_ep_register_set(4), | |
250 | dump_ep_register_set(5), | |
251 | dump_ep_register_set(6), | |
252 | dump_ep_register_set(7), | |
253 | dump_ep_register_set(8), | |
254 | dump_ep_register_set(9), | |
255 | dump_ep_register_set(10), | |
256 | dump_ep_register_set(11), | |
257 | dump_ep_register_set(12), | |
258 | dump_ep_register_set(13), | |
259 | dump_ep_register_set(14), | |
260 | dump_ep_register_set(15), | |
261 | dump_ep_register_set(16), | |
262 | dump_ep_register_set(17), | |
263 | dump_ep_register_set(18), | |
264 | dump_ep_register_set(19), | |
265 | dump_ep_register_set(20), | |
266 | dump_ep_register_set(21), | |
267 | dump_ep_register_set(22), | |
268 | dump_ep_register_set(23), | |
269 | dump_ep_register_set(24), | |
270 | dump_ep_register_set(25), | |
271 | dump_ep_register_set(26), | |
272 | dump_ep_register_set(27), | |
273 | dump_ep_register_set(28), | |
274 | dump_ep_register_set(29), | |
275 | dump_ep_register_set(30), | |
276 | dump_ep_register_set(31), | |
72246da4 FB |
277 | |
278 | dump_register(OCFG), | |
279 | dump_register(OCTL), | |
d4436c3a | 280 | dump_register(OEVT), |
72246da4 FB |
281 | dump_register(OEVTEN), |
282 | dump_register(OSTS), | |
283 | }; | |
284 | ||
0b9fe32d FB |
285 | static int dwc3_mode_show(struct seq_file *s, void *unused) |
286 | { | |
287 | struct dwc3 *dwc = s->private; | |
288 | unsigned long flags; | |
289 | u32 reg; | |
290 | ||
291 | spin_lock_irqsave(&dwc->lock, flags); | |
292 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); | |
293 | spin_unlock_irqrestore(&dwc->lock, flags); | |
294 | ||
295 | switch (DWC3_GCTL_PRTCAP(reg)) { | |
296 | case DWC3_GCTL_PRTCAP_HOST: | |
297 | seq_printf(s, "host\n"); | |
298 | break; | |
299 | case DWC3_GCTL_PRTCAP_DEVICE: | |
300 | seq_printf(s, "device\n"); | |
301 | break; | |
302 | case DWC3_GCTL_PRTCAP_OTG: | |
303 | seq_printf(s, "OTG\n"); | |
304 | break; | |
305 | default: | |
306 | seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg)); | |
307 | } | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | static int dwc3_mode_open(struct inode *inode, struct file *file) | |
313 | { | |
314 | return single_open(file, dwc3_mode_show, inode->i_private); | |
315 | } | |
316 | ||
317 | static ssize_t dwc3_mode_write(struct file *file, | |
318 | const char __user *ubuf, size_t count, loff_t *ppos) | |
319 | { | |
320 | struct seq_file *s = file->private_data; | |
321 | struct dwc3 *dwc = s->private; | |
322 | unsigned long flags; | |
3140e8cb | 323 | u32 mode = 0; |
0b9fe32d FB |
324 | char buf[32]; |
325 | ||
326 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
327 | return -EFAULT; | |
328 | ||
0b9fe32d | 329 | if (!strncmp(buf, "host", 4)) |
3140e8cb | 330 | mode |= DWC3_GCTL_PRTCAP_HOST; |
0b9fe32d FB |
331 | |
332 | if (!strncmp(buf, "device", 6)) | |
3140e8cb | 333 | mode |= DWC3_GCTL_PRTCAP_DEVICE; |
0b9fe32d FB |
334 | |
335 | if (!strncmp(buf, "otg", 3)) | |
3140e8cb | 336 | mode |= DWC3_GCTL_PRTCAP_OTG; |
0b9fe32d | 337 | |
3140e8cb SAS |
338 | if (mode) { |
339 | spin_lock_irqsave(&dwc->lock, flags); | |
340 | dwc3_set_mode(dwc, mode); | |
341 | spin_unlock_irqrestore(&dwc->lock, flags); | |
342 | } | |
0b9fe32d FB |
343 | return count; |
344 | } | |
345 | ||
346 | static const struct file_operations dwc3_mode_fops = { | |
347 | .open = dwc3_mode_open, | |
348 | .write = dwc3_mode_write, | |
349 | .read = seq_read, | |
350 | .llseek = seq_lseek, | |
351 | .release = single_release, | |
352 | }; | |
353 | ||
080d921f FB |
354 | static int dwc3_testmode_show(struct seq_file *s, void *unused) |
355 | { | |
356 | struct dwc3 *dwc = s->private; | |
357 | unsigned long flags; | |
358 | u32 reg; | |
359 | ||
360 | spin_lock_irqsave(&dwc->lock, flags); | |
361 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); | |
362 | reg &= DWC3_DCTL_TSTCTRL_MASK; | |
363 | reg >>= 1; | |
364 | spin_unlock_irqrestore(&dwc->lock, flags); | |
365 | ||
366 | switch (reg) { | |
367 | case 0: | |
368 | seq_printf(s, "no test\n"); | |
369 | break; | |
370 | case TEST_J: | |
371 | seq_printf(s, "test_j\n"); | |
372 | break; | |
373 | case TEST_K: | |
374 | seq_printf(s, "test_k\n"); | |
375 | break; | |
376 | case TEST_SE0_NAK: | |
377 | seq_printf(s, "test_se0_nak\n"); | |
378 | break; | |
379 | case TEST_PACKET: | |
380 | seq_printf(s, "test_packet\n"); | |
381 | break; | |
382 | case TEST_FORCE_EN: | |
383 | seq_printf(s, "test_force_enable\n"); | |
384 | break; | |
385 | default: | |
386 | seq_printf(s, "UNKNOWN %d\n", reg); | |
387 | } | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
392 | static int dwc3_testmode_open(struct inode *inode, struct file *file) | |
393 | { | |
394 | return single_open(file, dwc3_testmode_show, inode->i_private); | |
395 | } | |
396 | ||
397 | static ssize_t dwc3_testmode_write(struct file *file, | |
398 | const char __user *ubuf, size_t count, loff_t *ppos) | |
399 | { | |
400 | struct seq_file *s = file->private_data; | |
401 | struct dwc3 *dwc = s->private; | |
402 | unsigned long flags; | |
403 | u32 testmode = 0; | |
404 | char buf[32]; | |
405 | ||
406 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
407 | return -EFAULT; | |
408 | ||
409 | if (!strncmp(buf, "test_j", 6)) | |
410 | testmode = TEST_J; | |
411 | else if (!strncmp(buf, "test_k", 6)) | |
412 | testmode = TEST_K; | |
09072543 | 413 | else if (!strncmp(buf, "test_se0_nak", 12)) |
080d921f | 414 | testmode = TEST_SE0_NAK; |
09072543 | 415 | else if (!strncmp(buf, "test_packet", 11)) |
080d921f | 416 | testmode = TEST_PACKET; |
09072543 | 417 | else if (!strncmp(buf, "test_force_enable", 17)) |
080d921f FB |
418 | testmode = TEST_FORCE_EN; |
419 | else | |
420 | testmode = 0; | |
421 | ||
422 | spin_lock_irqsave(&dwc->lock, flags); | |
423 | dwc3_gadget_set_test_mode(dwc, testmode); | |
424 | spin_unlock_irqrestore(&dwc->lock, flags); | |
425 | ||
426 | return count; | |
427 | } | |
428 | ||
429 | static const struct file_operations dwc3_testmode_fops = { | |
430 | .open = dwc3_testmode_open, | |
431 | .write = dwc3_testmode_write, | |
432 | .read = seq_read, | |
433 | .llseek = seq_lseek, | |
434 | .release = single_release, | |
435 | }; | |
436 | ||
138801aa FB |
437 | static int dwc3_link_state_show(struct seq_file *s, void *unused) |
438 | { | |
439 | struct dwc3 *dwc = s->private; | |
440 | unsigned long flags; | |
441 | enum dwc3_link_state state; | |
442 | u32 reg; | |
443 | ||
444 | spin_lock_irqsave(&dwc->lock, flags); | |
445 | reg = dwc3_readl(dwc->regs, DWC3_DSTS); | |
446 | state = DWC3_DSTS_USBLNKST(reg); | |
447 | spin_unlock_irqrestore(&dwc->lock, flags); | |
448 | ||
449 | switch (state) { | |
450 | case DWC3_LINK_STATE_U0: | |
451 | seq_printf(s, "U0\n"); | |
452 | break; | |
453 | case DWC3_LINK_STATE_U1: | |
454 | seq_printf(s, "U1\n"); | |
455 | break; | |
456 | case DWC3_LINK_STATE_U2: | |
457 | seq_printf(s, "U2\n"); | |
458 | break; | |
459 | case DWC3_LINK_STATE_U3: | |
460 | seq_printf(s, "U3\n"); | |
461 | break; | |
462 | case DWC3_LINK_STATE_SS_DIS: | |
463 | seq_printf(s, "SS.Disabled\n"); | |
464 | break; | |
465 | case DWC3_LINK_STATE_RX_DET: | |
466 | seq_printf(s, "Rx.Detect\n"); | |
467 | break; | |
468 | case DWC3_LINK_STATE_SS_INACT: | |
469 | seq_printf(s, "SS.Inactive\n"); | |
470 | break; | |
471 | case DWC3_LINK_STATE_POLL: | |
472 | seq_printf(s, "Poll\n"); | |
473 | break; | |
474 | case DWC3_LINK_STATE_RECOV: | |
475 | seq_printf(s, "Recovery\n"); | |
476 | break; | |
477 | case DWC3_LINK_STATE_HRESET: | |
478 | seq_printf(s, "HRESET\n"); | |
479 | break; | |
480 | case DWC3_LINK_STATE_CMPLY: | |
481 | seq_printf(s, "Compliance\n"); | |
482 | break; | |
483 | case DWC3_LINK_STATE_LPBK: | |
484 | seq_printf(s, "Loopback\n"); | |
485 | break; | |
6b2a0eb8 FB |
486 | case DWC3_LINK_STATE_RESET: |
487 | seq_printf(s, "Reset\n"); | |
488 | break; | |
489 | case DWC3_LINK_STATE_RESUME: | |
490 | seq_printf(s, "Resume\n"); | |
491 | break; | |
138801aa | 492 | default: |
5b9ec339 | 493 | seq_printf(s, "UNKNOWN %d\n", state); |
138801aa FB |
494 | } |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
499 | static int dwc3_link_state_open(struct inode *inode, struct file *file) | |
500 | { | |
501 | return single_open(file, dwc3_link_state_show, inode->i_private); | |
502 | } | |
503 | ||
504 | static ssize_t dwc3_link_state_write(struct file *file, | |
505 | const char __user *ubuf, size_t count, loff_t *ppos) | |
506 | { | |
507 | struct seq_file *s = file->private_data; | |
508 | struct dwc3 *dwc = s->private; | |
509 | unsigned long flags; | |
510 | enum dwc3_link_state state = 0; | |
511 | char buf[32]; | |
512 | ||
513 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
514 | return -EFAULT; | |
515 | ||
516 | if (!strncmp(buf, "SS.Disabled", 11)) | |
517 | state = DWC3_LINK_STATE_SS_DIS; | |
518 | else if (!strncmp(buf, "Rx.Detect", 9)) | |
519 | state = DWC3_LINK_STATE_RX_DET; | |
520 | else if (!strncmp(buf, "SS.Inactive", 11)) | |
521 | state = DWC3_LINK_STATE_SS_INACT; | |
522 | else if (!strncmp(buf, "Recovery", 8)) | |
523 | state = DWC3_LINK_STATE_RECOV; | |
524 | else if (!strncmp(buf, "Compliance", 10)) | |
525 | state = DWC3_LINK_STATE_CMPLY; | |
526 | else if (!strncmp(buf, "Loopback", 8)) | |
527 | state = DWC3_LINK_STATE_LPBK; | |
528 | else | |
529 | return -EINVAL; | |
530 | ||
531 | spin_lock_irqsave(&dwc->lock, flags); | |
532 | dwc3_gadget_set_link_state(dwc, state); | |
533 | spin_unlock_irqrestore(&dwc->lock, flags); | |
534 | ||
535 | return count; | |
536 | } | |
537 | ||
538 | static const struct file_operations dwc3_link_state_fops = { | |
539 | .open = dwc3_link_state_open, | |
540 | .write = dwc3_link_state_write, | |
541 | .read = seq_read, | |
542 | .llseek = seq_lseek, | |
543 | .release = single_release, | |
544 | }; | |
545 | ||
818ec3ab FB |
546 | struct dwc3_ep_file_map { |
547 | char name[25]; | |
548 | int (*show)(struct seq_file *s, void *unused); | |
549 | }; | |
550 | ||
551 | static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused) | |
552 | { | |
553 | struct dwc3_ep *dep = s->private; | |
554 | struct dwc3 *dwc = dep->dwc; | |
555 | unsigned long flags; | |
556 | u32 val; | |
557 | ||
558 | spin_lock_irqsave(&dwc->lock, flags); | |
559 | val = dwc3_core_fifo_space(dep, DWC3_TXFIFOQ); | |
560 | seq_printf(s, "%u\n", val); | |
561 | spin_unlock_irqrestore(&dwc->lock, flags); | |
562 | ||
563 | return 0; | |
564 | } | |
565 | ||
566 | static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused) | |
567 | { | |
568 | struct dwc3_ep *dep = s->private; | |
569 | struct dwc3 *dwc = dep->dwc; | |
570 | unsigned long flags; | |
571 | u32 val; | |
572 | ||
573 | spin_lock_irqsave(&dwc->lock, flags); | |
574 | val = dwc3_core_fifo_space(dep, DWC3_RXFIFOQ); | |
575 | seq_printf(s, "%u\n", val); | |
576 | spin_unlock_irqrestore(&dwc->lock, flags); | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
581 | static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused) | |
582 | { | |
583 | struct dwc3_ep *dep = s->private; | |
584 | struct dwc3 *dwc = dep->dwc; | |
585 | unsigned long flags; | |
586 | u32 val; | |
587 | ||
588 | spin_lock_irqsave(&dwc->lock, flags); | |
589 | val = dwc3_core_fifo_space(dep, DWC3_TXREQQ); | |
590 | seq_printf(s, "%u\n", val); | |
591 | spin_unlock_irqrestore(&dwc->lock, flags); | |
592 | ||
593 | return 0; | |
594 | } | |
595 | ||
596 | static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused) | |
597 | { | |
598 | struct dwc3_ep *dep = s->private; | |
599 | struct dwc3 *dwc = dep->dwc; | |
600 | unsigned long flags; | |
601 | u32 val; | |
602 | ||
603 | spin_lock_irqsave(&dwc->lock, flags); | |
604 | val = dwc3_core_fifo_space(dep, DWC3_RXREQQ); | |
605 | seq_printf(s, "%u\n", val); | |
606 | spin_unlock_irqrestore(&dwc->lock, flags); | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
611 | static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused) | |
612 | { | |
613 | struct dwc3_ep *dep = s->private; | |
614 | struct dwc3 *dwc = dep->dwc; | |
615 | unsigned long flags; | |
616 | u32 val; | |
617 | ||
618 | spin_lock_irqsave(&dwc->lock, flags); | |
619 | val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ); | |
620 | seq_printf(s, "%u\n", val); | |
621 | spin_unlock_irqrestore(&dwc->lock, flags); | |
622 | ||
623 | return 0; | |
624 | } | |
625 | ||
626 | static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused) | |
627 | { | |
628 | struct dwc3_ep *dep = s->private; | |
629 | struct dwc3 *dwc = dep->dwc; | |
630 | unsigned long flags; | |
631 | u32 val; | |
632 | ||
633 | spin_lock_irqsave(&dwc->lock, flags); | |
634 | val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ); | |
635 | seq_printf(s, "%u\n", val); | |
636 | spin_unlock_irqrestore(&dwc->lock, flags); | |
637 | ||
638 | return 0; | |
639 | } | |
640 | ||
641 | static int dwc3_event_queue_show(struct seq_file *s, void *unused) | |
642 | { | |
643 | struct dwc3_ep *dep = s->private; | |
644 | struct dwc3 *dwc = dep->dwc; | |
645 | unsigned long flags; | |
646 | u32 val; | |
647 | ||
648 | spin_lock_irqsave(&dwc->lock, flags); | |
649 | val = dwc3_core_fifo_space(dep, DWC3_EVENTQ); | |
650 | seq_printf(s, "%u\n", val); | |
651 | spin_unlock_irqrestore(&dwc->lock, flags); | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
656 | static int dwc3_ep_transfer_type_show(struct seq_file *s, void *unused) | |
657 | { | |
658 | struct dwc3_ep *dep = s->private; | |
659 | struct dwc3 *dwc = dep->dwc; | |
660 | unsigned long flags; | |
661 | ||
662 | spin_lock_irqsave(&dwc->lock, flags); | |
663 | if (!(dep->flags & DWC3_EP_ENABLED) || | |
664 | !dep->endpoint.desc) { | |
665 | seq_printf(s, "--\n"); | |
666 | goto out; | |
667 | } | |
668 | ||
669 | switch (usb_endpoint_type(dep->endpoint.desc)) { | |
670 | case USB_ENDPOINT_XFER_CONTROL: | |
671 | seq_printf(s, "control\n"); | |
672 | break; | |
673 | case USB_ENDPOINT_XFER_ISOC: | |
674 | seq_printf(s, "isochronous\n"); | |
675 | break; | |
676 | case USB_ENDPOINT_XFER_BULK: | |
677 | seq_printf(s, "bulk\n"); | |
678 | break; | |
679 | case USB_ENDPOINT_XFER_INT: | |
680 | seq_printf(s, "interrupt\n"); | |
681 | break; | |
682 | default: | |
683 | seq_printf(s, "--\n"); | |
684 | } | |
685 | ||
686 | out: | |
687 | spin_unlock_irqrestore(&dwc->lock, flags); | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
692 | static inline const char *dwc3_trb_type_string(struct dwc3_trb *trb) | |
693 | { | |
694 | switch (DWC3_TRBCTL_TYPE(trb->ctrl)) { | |
695 | case DWC3_TRBCTL_NORMAL: | |
696 | return "normal"; | |
697 | case DWC3_TRBCTL_CONTROL_SETUP: | |
698 | return "control-setup"; | |
699 | case DWC3_TRBCTL_CONTROL_STATUS2: | |
700 | return "control-status2"; | |
701 | case DWC3_TRBCTL_CONTROL_STATUS3: | |
702 | return "control-status3"; | |
703 | case DWC3_TRBCTL_CONTROL_DATA: | |
704 | return "control-data"; | |
705 | case DWC3_TRBCTL_ISOCHRONOUS_FIRST: | |
706 | return "isoc-first"; | |
707 | case DWC3_TRBCTL_ISOCHRONOUS: | |
708 | return "isoc"; | |
709 | case DWC3_TRBCTL_LINK_TRB: | |
710 | return "link"; | |
711 | default: | |
712 | return "UNKNOWN"; | |
713 | } | |
714 | } | |
715 | ||
716 | static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused) | |
717 | { | |
718 | struct dwc3_ep *dep = s->private; | |
719 | struct dwc3 *dwc = dep->dwc; | |
720 | unsigned long flags; | |
721 | int i; | |
722 | ||
723 | spin_lock_irqsave(&dwc->lock, flags); | |
724 | if (dep->number <= 1) { | |
725 | seq_printf(s, "--\n"); | |
726 | goto out; | |
727 | } | |
728 | ||
729 | seq_printf(s, "enqueue pointer %d\n", dep->trb_enqueue); | |
730 | seq_printf(s, "dequeue pointer %d\n", dep->trb_dequeue); | |
731 | seq_printf(s, "\n--------------------------------------------------\n\n"); | |
732 | seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n"); | |
733 | ||
734 | for (i = 0; i < DWC3_TRB_NUM; i++) { | |
735 | struct dwc3_trb *trb = &dep->trb_pool[i]; | |
736 | ||
737 | seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d\n", | |
738 | trb->bph, trb->bpl, trb->size, | |
739 | dwc3_trb_type_string(trb), | |
740 | !!(trb->ctrl & DWC3_TRB_CTRL_IOC), | |
741 | !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI), | |
742 | !!(trb->ctrl & DWC3_TRB_CTRL_CSP), | |
743 | !!(trb->ctrl & DWC3_TRB_CTRL_CHN), | |
744 | !!(trb->ctrl & DWC3_TRB_CTRL_LST), | |
745 | !!(trb->ctrl & DWC3_TRB_CTRL_HWO)); | |
746 | } | |
747 | ||
748 | out: | |
749 | spin_unlock_irqrestore(&dwc->lock, flags); | |
750 | ||
751 | return 0; | |
752 | } | |
753 | ||
754 | static struct dwc3_ep_file_map map[] = { | |
755 | { "tx_fifo_queue", dwc3_tx_fifo_queue_show, }, | |
756 | { "rx_fifo_queue", dwc3_rx_fifo_queue_show, }, | |
757 | { "tx_request_queue", dwc3_tx_request_queue_show, }, | |
758 | { "rx_request_queue", dwc3_rx_request_queue_show, }, | |
759 | { "rx_info_queue", dwc3_rx_info_queue_show, }, | |
760 | { "descriptor_fetch_queue", dwc3_descriptor_fetch_queue_show, }, | |
761 | { "event_queue", dwc3_event_queue_show, }, | |
762 | { "transfer_type", dwc3_ep_transfer_type_show, }, | |
763 | { "trb_ring", dwc3_ep_trb_ring_show, }, | |
764 | }; | |
765 | ||
766 | static int dwc3_endpoint_open(struct inode *inode, struct file *file) | |
767 | { | |
768 | const char *file_name = file_dentry(file)->d_iname; | |
769 | struct dwc3_ep_file_map *f_map; | |
770 | int i; | |
771 | ||
772 | for (i = 0; i < ARRAY_SIZE(map); i++) { | |
773 | f_map = &map[i]; | |
774 | ||
775 | if (strcmp(f_map->name, file_name) == 0) | |
776 | break; | |
777 | } | |
778 | ||
779 | return single_open(file, f_map->show, inode->i_private); | |
780 | } | |
781 | ||
782 | static const struct file_operations dwc3_endpoint_fops = { | |
783 | .open = dwc3_endpoint_open, | |
784 | .read = seq_read, | |
785 | .llseek = seq_lseek, | |
786 | .release = single_release, | |
787 | }; | |
788 | ||
789 | static void dwc3_debugfs_create_endpoint_file(struct dwc3_ep *dep, | |
790 | struct dentry *parent, int type) | |
72246da4 | 791 | { |
72246da4 | 792 | struct dentry *file; |
818ec3ab | 793 | struct dwc3_ep_file_map *ep_file = &map[type]; |
72246da4 | 794 | |
818ec3ab FB |
795 | file = debugfs_create_file(ep_file->name, S_IRUGO, parent, dep, |
796 | &dwc3_endpoint_fops); | |
797 | } | |
798 | ||
799 | static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep, | |
800 | struct dentry *parent) | |
801 | { | |
802 | int i; | |
803 | ||
804 | for (i = 0; i < ARRAY_SIZE(map); i++) | |
805 | dwc3_debugfs_create_endpoint_file(dep, parent, i); | |
806 | } | |
807 | ||
808 | static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep, | |
809 | struct dentry *parent) | |
810 | { | |
811 | struct dentry *dir; | |
812 | ||
813 | dir = debugfs_create_dir(dep->name, parent); | |
814 | if (IS_ERR_OR_NULL(dir)) | |
815 | return; | |
816 | ||
817 | dwc3_debugfs_create_endpoint_files(dep, dir); | |
818 | } | |
819 | ||
820 | static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc, | |
821 | struct dentry *parent) | |
822 | { | |
823 | int i; | |
824 | ||
825 | for (i = 0; i < dwc->num_in_eps; i++) { | |
826 | u8 epnum = (i << 1) | 1; | |
827 | struct dwc3_ep *dep = dwc->eps[epnum]; | |
828 | ||
829 | if (!dep) | |
830 | continue; | |
831 | ||
832 | dwc3_debugfs_create_endpoint_dir(dep, parent); | |
833 | } | |
834 | ||
835 | for (i = 0; i < dwc->num_out_eps; i++) { | |
836 | u8 epnum = (i << 1); | |
837 | struct dwc3_ep *dep = dwc->eps[epnum]; | |
838 | ||
839 | if (!dep) | |
840 | continue; | |
841 | ||
842 | dwc3_debugfs_create_endpoint_dir(dep, parent); | |
72246da4 | 843 | } |
818ec3ab FB |
844 | } |
845 | ||
4e9f3118 | 846 | void dwc3_debugfs_init(struct dwc3 *dwc) |
72246da4 FB |
847 | { |
848 | struct dentry *root; | |
4e9f3118 | 849 | struct dentry *file; |
72246da4 | 850 | |
72246da4 | 851 | root = debugfs_create_dir(dev_name(dwc->dev), NULL); |
4e9f3118 DC |
852 | if (IS_ERR_OR_NULL(root)) { |
853 | if (!root) | |
854 | dev_err(dwc->dev, "Can't create debugfs root\n"); | |
855 | return; | |
72246da4 | 856 | } |
72246da4 FB |
857 | dwc->root = root; |
858 | ||
d7668024 FB |
859 | dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); |
860 | if (!dwc->regset) { | |
4e9f3118 DC |
861 | debugfs_remove_recursive(root); |
862 | return; | |
d7668024 FB |
863 | } |
864 | ||
865 | dwc->regset->regs = dwc3_regs; | |
866 | dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); | |
2eb88016 | 867 | dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START; |
d7668024 FB |
868 | |
869 | file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset); | |
4e9f3118 DC |
870 | if (!file) |
871 | dev_dbg(dwc->dev, "Can't create debugfs regdump\n"); | |
0b9fe32d | 872 | |
dbfff05d FB |
873 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) { |
874 | file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, | |
875 | dwc, &dwc3_mode_fops); | |
4e9f3118 DC |
876 | if (!file) |
877 | dev_dbg(dwc->dev, "Can't create debugfs mode\n"); | |
0b9fe32d FB |
878 | } |
879 | ||
dbfff05d FB |
880 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) || |
881 | IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { | |
882 | file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root, | |
883 | dwc, &dwc3_testmode_fops); | |
4e9f3118 DC |
884 | if (!file) |
885 | dev_dbg(dwc->dev, "Can't create debugfs testmode\n"); | |
138801aa | 886 | |
4e9f3118 DC |
887 | file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, |
888 | root, dwc, &dwc3_link_state_fops); | |
889 | if (!file) | |
890 | dev_dbg(dwc->dev, "Can't create debugfs link_state\n"); | |
72246da4 | 891 | |
818ec3ab | 892 | dwc3_debugfs_create_endpoint_dirs(dwc, root); |
4e9f3118 | 893 | } |
72246da4 FB |
894 | } |
895 | ||
fb4e98ab | 896 | void dwc3_debugfs_exit(struct dwc3 *dwc) |
72246da4 FB |
897 | { |
898 | debugfs_remove_recursive(dwc->root); | |
e6bdf819 | 899 | kfree(dwc->regset); |
72246da4 | 900 | } |