Commit | Line | Data |
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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0 |
72246da4 FB |
2 | /** |
3 | * debugfs.c - DesignWare USB3 DRD Controller DebugFS file | |
4 | * | |
10623b87 | 5 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com |
72246da4 FB |
6 | * |
7 | * Authors: Felipe Balbi <balbi@ti.com>, | |
8 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
72246da4 FB |
9 | */ |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/ptrace.h> | |
14 | #include <linux/types.h> | |
15 | #include <linux/spinlock.h> | |
16 | #include <linux/debugfs.h> | |
17 | #include <linux/seq_file.h> | |
18 | #include <linux/delay.h> | |
25b8ff68 | 19 | #include <linux/uaccess.h> |
72246da4 | 20 | |
080d921f FB |
21 | #include <linux/usb/ch9.h> |
22 | ||
72246da4 FB |
23 | #include "core.h" |
24 | #include "gadget.h" | |
25 | #include "io.h" | |
8becf270 | 26 | #include "debug.h" |
72246da4 | 27 | |
62ba09d6 TN |
28 | #define DWC3_LSP_MUX_UNSELECTED 0xfffff |
29 | ||
72246da4 FB |
30 | #define dump_register(nm) \ |
31 | { \ | |
32 | .name = __stringify(nm), \ | |
2eb88016 | 33 | .offset = DWC3_ ##nm, \ |
72246da4 FB |
34 | } |
35 | ||
2eb88016 FB |
36 | #define dump_ep_register_set(n) \ |
37 | { \ | |
38 | .name = "DEPCMDPAR2("__stringify(n)")", \ | |
39 | .offset = DWC3_DEP_BASE(n) + \ | |
40 | DWC3_DEPCMDPAR2, \ | |
41 | }, \ | |
42 | { \ | |
43 | .name = "DEPCMDPAR1("__stringify(n)")", \ | |
44 | .offset = DWC3_DEP_BASE(n) + \ | |
45 | DWC3_DEPCMDPAR1, \ | |
46 | }, \ | |
47 | { \ | |
48 | .name = "DEPCMDPAR0("__stringify(n)")", \ | |
49 | .offset = DWC3_DEP_BASE(n) + \ | |
50 | DWC3_DEPCMDPAR0, \ | |
51 | }, \ | |
52 | { \ | |
53 | .name = "DEPCMD("__stringify(n)")", \ | |
54 | .offset = DWC3_DEP_BASE(n) + \ | |
55 | DWC3_DEPCMD, \ | |
56 | } | |
57 | ||
58 | ||
4ec0ddb1 | 59 | static const struct debugfs_reg32 dwc3_regs[] = { |
72246da4 FB |
60 | dump_register(GSBUSCFG0), |
61 | dump_register(GSBUSCFG1), | |
62 | dump_register(GTXTHRCFG), | |
63 | dump_register(GRXTHRCFG), | |
64 | dump_register(GCTL), | |
65 | dump_register(GEVTEN), | |
66 | dump_register(GSTS), | |
475c8beb | 67 | dump_register(GUCTL1), |
72246da4 FB |
68 | dump_register(GSNPSID), |
69 | dump_register(GGPIO), | |
70 | dump_register(GUID), | |
71 | dump_register(GUCTL), | |
72 | dump_register(GBUSERRADDR0), | |
73 | dump_register(GBUSERRADDR1), | |
74 | dump_register(GPRTBIMAP0), | |
75 | dump_register(GPRTBIMAP1), | |
76 | dump_register(GHWPARAMS0), | |
77 | dump_register(GHWPARAMS1), | |
78 | dump_register(GHWPARAMS2), | |
79 | dump_register(GHWPARAMS3), | |
80 | dump_register(GHWPARAMS4), | |
81 | dump_register(GHWPARAMS5), | |
82 | dump_register(GHWPARAMS6), | |
83 | dump_register(GHWPARAMS7), | |
84 | dump_register(GDBGFIFOSPACE), | |
85 | dump_register(GDBGLTSSM), | |
80b77634 | 86 | dump_register(GDBGBMU), |
72246da4 FB |
87 | dump_register(GPRTBIMAP_HS0), |
88 | dump_register(GPRTBIMAP_HS1), | |
89 | dump_register(GPRTBIMAP_FS0), | |
90 | dump_register(GPRTBIMAP_FS1), | |
91 | ||
92 | dump_register(GUSB2PHYCFG(0)), | |
93 | dump_register(GUSB2PHYCFG(1)), | |
94 | dump_register(GUSB2PHYCFG(2)), | |
95 | dump_register(GUSB2PHYCFG(3)), | |
96 | dump_register(GUSB2PHYCFG(4)), | |
97 | dump_register(GUSB2PHYCFG(5)), | |
98 | dump_register(GUSB2PHYCFG(6)), | |
99 | dump_register(GUSB2PHYCFG(7)), | |
100 | dump_register(GUSB2PHYCFG(8)), | |
101 | dump_register(GUSB2PHYCFG(9)), | |
102 | dump_register(GUSB2PHYCFG(10)), | |
103 | dump_register(GUSB2PHYCFG(11)), | |
104 | dump_register(GUSB2PHYCFG(12)), | |
105 | dump_register(GUSB2PHYCFG(13)), | |
106 | dump_register(GUSB2PHYCFG(14)), | |
107 | dump_register(GUSB2PHYCFG(15)), | |
108 | ||
109 | dump_register(GUSB2I2CCTL(0)), | |
110 | dump_register(GUSB2I2CCTL(1)), | |
111 | dump_register(GUSB2I2CCTL(2)), | |
112 | dump_register(GUSB2I2CCTL(3)), | |
113 | dump_register(GUSB2I2CCTL(4)), | |
114 | dump_register(GUSB2I2CCTL(5)), | |
115 | dump_register(GUSB2I2CCTL(6)), | |
116 | dump_register(GUSB2I2CCTL(7)), | |
117 | dump_register(GUSB2I2CCTL(8)), | |
118 | dump_register(GUSB2I2CCTL(9)), | |
119 | dump_register(GUSB2I2CCTL(10)), | |
120 | dump_register(GUSB2I2CCTL(11)), | |
121 | dump_register(GUSB2I2CCTL(12)), | |
122 | dump_register(GUSB2I2CCTL(13)), | |
123 | dump_register(GUSB2I2CCTL(14)), | |
124 | dump_register(GUSB2I2CCTL(15)), | |
125 | ||
126 | dump_register(GUSB2PHYACC(0)), | |
127 | dump_register(GUSB2PHYACC(1)), | |
128 | dump_register(GUSB2PHYACC(2)), | |
129 | dump_register(GUSB2PHYACC(3)), | |
130 | dump_register(GUSB2PHYACC(4)), | |
131 | dump_register(GUSB2PHYACC(5)), | |
132 | dump_register(GUSB2PHYACC(6)), | |
133 | dump_register(GUSB2PHYACC(7)), | |
134 | dump_register(GUSB2PHYACC(8)), | |
135 | dump_register(GUSB2PHYACC(9)), | |
136 | dump_register(GUSB2PHYACC(10)), | |
137 | dump_register(GUSB2PHYACC(11)), | |
138 | dump_register(GUSB2PHYACC(12)), | |
139 | dump_register(GUSB2PHYACC(13)), | |
140 | dump_register(GUSB2PHYACC(14)), | |
141 | dump_register(GUSB2PHYACC(15)), | |
142 | ||
143 | dump_register(GUSB3PIPECTL(0)), | |
144 | dump_register(GUSB3PIPECTL(1)), | |
145 | dump_register(GUSB3PIPECTL(2)), | |
146 | dump_register(GUSB3PIPECTL(3)), | |
147 | dump_register(GUSB3PIPECTL(4)), | |
148 | dump_register(GUSB3PIPECTL(5)), | |
149 | dump_register(GUSB3PIPECTL(6)), | |
150 | dump_register(GUSB3PIPECTL(7)), | |
151 | dump_register(GUSB3PIPECTL(8)), | |
152 | dump_register(GUSB3PIPECTL(9)), | |
153 | dump_register(GUSB3PIPECTL(10)), | |
154 | dump_register(GUSB3PIPECTL(11)), | |
155 | dump_register(GUSB3PIPECTL(12)), | |
156 | dump_register(GUSB3PIPECTL(13)), | |
157 | dump_register(GUSB3PIPECTL(14)), | |
158 | dump_register(GUSB3PIPECTL(15)), | |
159 | ||
160 | dump_register(GTXFIFOSIZ(0)), | |
161 | dump_register(GTXFIFOSIZ(1)), | |
162 | dump_register(GTXFIFOSIZ(2)), | |
163 | dump_register(GTXFIFOSIZ(3)), | |
164 | dump_register(GTXFIFOSIZ(4)), | |
165 | dump_register(GTXFIFOSIZ(5)), | |
166 | dump_register(GTXFIFOSIZ(6)), | |
167 | dump_register(GTXFIFOSIZ(7)), | |
168 | dump_register(GTXFIFOSIZ(8)), | |
169 | dump_register(GTXFIFOSIZ(9)), | |
170 | dump_register(GTXFIFOSIZ(10)), | |
171 | dump_register(GTXFIFOSIZ(11)), | |
172 | dump_register(GTXFIFOSIZ(12)), | |
173 | dump_register(GTXFIFOSIZ(13)), | |
174 | dump_register(GTXFIFOSIZ(14)), | |
175 | dump_register(GTXFIFOSIZ(15)), | |
176 | dump_register(GTXFIFOSIZ(16)), | |
177 | dump_register(GTXFIFOSIZ(17)), | |
178 | dump_register(GTXFIFOSIZ(18)), | |
179 | dump_register(GTXFIFOSIZ(19)), | |
180 | dump_register(GTXFIFOSIZ(20)), | |
181 | dump_register(GTXFIFOSIZ(21)), | |
182 | dump_register(GTXFIFOSIZ(22)), | |
183 | dump_register(GTXFIFOSIZ(23)), | |
184 | dump_register(GTXFIFOSIZ(24)), | |
185 | dump_register(GTXFIFOSIZ(25)), | |
186 | dump_register(GTXFIFOSIZ(26)), | |
187 | dump_register(GTXFIFOSIZ(27)), | |
188 | dump_register(GTXFIFOSIZ(28)), | |
189 | dump_register(GTXFIFOSIZ(29)), | |
190 | dump_register(GTXFIFOSIZ(30)), | |
191 | dump_register(GTXFIFOSIZ(31)), | |
192 | ||
193 | dump_register(GRXFIFOSIZ(0)), | |
194 | dump_register(GRXFIFOSIZ(1)), | |
195 | dump_register(GRXFIFOSIZ(2)), | |
196 | dump_register(GRXFIFOSIZ(3)), | |
197 | dump_register(GRXFIFOSIZ(4)), | |
198 | dump_register(GRXFIFOSIZ(5)), | |
199 | dump_register(GRXFIFOSIZ(6)), | |
200 | dump_register(GRXFIFOSIZ(7)), | |
201 | dump_register(GRXFIFOSIZ(8)), | |
202 | dump_register(GRXFIFOSIZ(9)), | |
203 | dump_register(GRXFIFOSIZ(10)), | |
204 | dump_register(GRXFIFOSIZ(11)), | |
205 | dump_register(GRXFIFOSIZ(12)), | |
206 | dump_register(GRXFIFOSIZ(13)), | |
207 | dump_register(GRXFIFOSIZ(14)), | |
208 | dump_register(GRXFIFOSIZ(15)), | |
209 | dump_register(GRXFIFOSIZ(16)), | |
210 | dump_register(GRXFIFOSIZ(17)), | |
211 | dump_register(GRXFIFOSIZ(18)), | |
212 | dump_register(GRXFIFOSIZ(19)), | |
213 | dump_register(GRXFIFOSIZ(20)), | |
214 | dump_register(GRXFIFOSIZ(21)), | |
215 | dump_register(GRXFIFOSIZ(22)), | |
216 | dump_register(GRXFIFOSIZ(23)), | |
217 | dump_register(GRXFIFOSIZ(24)), | |
218 | dump_register(GRXFIFOSIZ(25)), | |
219 | dump_register(GRXFIFOSIZ(26)), | |
220 | dump_register(GRXFIFOSIZ(27)), | |
221 | dump_register(GRXFIFOSIZ(28)), | |
222 | dump_register(GRXFIFOSIZ(29)), | |
223 | dump_register(GRXFIFOSIZ(30)), | |
224 | dump_register(GRXFIFOSIZ(31)), | |
225 | ||
226 | dump_register(GEVNTADRLO(0)), | |
227 | dump_register(GEVNTADRHI(0)), | |
228 | dump_register(GEVNTSIZ(0)), | |
229 | dump_register(GEVNTCOUNT(0)), | |
230 | ||
231 | dump_register(GHWPARAMS8), | |
232 | dump_register(DCFG), | |
233 | dump_register(DCTL), | |
234 | dump_register(DEVTEN), | |
235 | dump_register(DSTS), | |
236 | dump_register(DGCMDPAR), | |
237 | dump_register(DGCMD), | |
238 | dump_register(DALEPENA), | |
239 | ||
2eb88016 FB |
240 | dump_ep_register_set(0), |
241 | dump_ep_register_set(1), | |
242 | dump_ep_register_set(2), | |
243 | dump_ep_register_set(3), | |
244 | dump_ep_register_set(4), | |
245 | dump_ep_register_set(5), | |
246 | dump_ep_register_set(6), | |
247 | dump_ep_register_set(7), | |
248 | dump_ep_register_set(8), | |
249 | dump_ep_register_set(9), | |
250 | dump_ep_register_set(10), | |
251 | dump_ep_register_set(11), | |
252 | dump_ep_register_set(12), | |
253 | dump_ep_register_set(13), | |
254 | dump_ep_register_set(14), | |
255 | dump_ep_register_set(15), | |
256 | dump_ep_register_set(16), | |
257 | dump_ep_register_set(17), | |
258 | dump_ep_register_set(18), | |
259 | dump_ep_register_set(19), | |
260 | dump_ep_register_set(20), | |
261 | dump_ep_register_set(21), | |
262 | dump_ep_register_set(22), | |
263 | dump_ep_register_set(23), | |
264 | dump_ep_register_set(24), | |
265 | dump_ep_register_set(25), | |
266 | dump_ep_register_set(26), | |
267 | dump_ep_register_set(27), | |
268 | dump_ep_register_set(28), | |
269 | dump_ep_register_set(29), | |
270 | dump_ep_register_set(30), | |
271 | dump_ep_register_set(31), | |
72246da4 FB |
272 | |
273 | dump_register(OCFG), | |
274 | dump_register(OCTL), | |
d4436c3a | 275 | dump_register(OEVT), |
72246da4 FB |
276 | dump_register(OEVTEN), |
277 | dump_register(OSTS), | |
278 | }; | |
279 | ||
62ba09d6 TN |
280 | static void dwc3_host_lsp(struct seq_file *s) |
281 | { | |
282 | struct dwc3 *dwc = s->private; | |
283 | bool dbc_enabled; | |
284 | u32 sel; | |
285 | u32 reg; | |
286 | u32 val; | |
287 | ||
288 | dbc_enabled = !!(dwc->hwparams.hwparams1 & DWC3_GHWPARAMS1_ENDBC); | |
289 | ||
290 | sel = dwc->dbg_lsp_select; | |
291 | if (sel == DWC3_LSP_MUX_UNSELECTED) { | |
292 | seq_puts(s, "Write LSP selection to print for host\n"); | |
293 | return; | |
294 | } | |
295 | ||
296 | reg = DWC3_GDBGLSPMUX_HOSTSELECT(sel); | |
297 | ||
298 | dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); | |
299 | val = dwc3_readl(dwc->regs, DWC3_GDBGLSP); | |
300 | seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", sel, val); | |
301 | ||
302 | if (dbc_enabled && sel < 256) { | |
303 | reg |= DWC3_GDBGLSPMUX_ENDBC; | |
304 | dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); | |
305 | val = dwc3_readl(dwc->regs, DWC3_GDBGLSP); | |
306 | seq_printf(s, "GDBGLSP_DBC[%d] = 0x%08x\n", sel, val); | |
307 | } | |
308 | } | |
309 | ||
310 | static void dwc3_gadget_lsp(struct seq_file *s) | |
311 | { | |
312 | struct dwc3 *dwc = s->private; | |
313 | int i; | |
314 | u32 reg; | |
315 | ||
316 | for (i = 0; i < 16; i++) { | |
317 | reg = DWC3_GDBGLSPMUX_DEVSELECT(i); | |
318 | dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); | |
319 | reg = dwc3_readl(dwc->regs, DWC3_GDBGLSP); | |
320 | seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", i, reg); | |
321 | } | |
322 | } | |
323 | ||
324 | static int dwc3_lsp_show(struct seq_file *s, void *unused) | |
325 | { | |
326 | struct dwc3 *dwc = s->private; | |
327 | unsigned int current_mode; | |
328 | unsigned long flags; | |
329 | u32 reg; | |
330 | ||
331 | spin_lock_irqsave(&dwc->lock, flags); | |
332 | reg = dwc3_readl(dwc->regs, DWC3_GSTS); | |
333 | current_mode = DWC3_GSTS_CURMOD(reg); | |
334 | ||
335 | switch (current_mode) { | |
336 | case DWC3_GSTS_CURMOD_HOST: | |
337 | dwc3_host_lsp(s); | |
338 | break; | |
339 | case DWC3_GSTS_CURMOD_DEVICE: | |
340 | dwc3_gadget_lsp(s); | |
341 | break; | |
342 | default: | |
343 | seq_puts(s, "Mode is unknown, no LSP register printed\n"); | |
344 | break; | |
345 | } | |
346 | spin_unlock_irqrestore(&dwc->lock, flags); | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | static int dwc3_lsp_open(struct inode *inode, struct file *file) | |
352 | { | |
353 | return single_open(file, dwc3_lsp_show, inode->i_private); | |
354 | } | |
355 | ||
356 | static ssize_t dwc3_lsp_write(struct file *file, const char __user *ubuf, | |
357 | size_t count, loff_t *ppos) | |
358 | { | |
359 | struct seq_file *s = file->private_data; | |
360 | struct dwc3 *dwc = s->private; | |
361 | unsigned long flags; | |
362 | char buf[32] = { 0 }; | |
363 | u32 sel; | |
364 | int ret; | |
365 | ||
366 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
367 | return -EFAULT; | |
368 | ||
369 | ret = kstrtouint(buf, 0, &sel); | |
370 | if (ret) | |
371 | return ret; | |
372 | ||
373 | spin_lock_irqsave(&dwc->lock, flags); | |
374 | dwc->dbg_lsp_select = sel; | |
375 | spin_unlock_irqrestore(&dwc->lock, flags); | |
376 | ||
377 | return count; | |
378 | } | |
379 | ||
380 | static const struct file_operations dwc3_lsp_fops = { | |
381 | .open = dwc3_lsp_open, | |
382 | .write = dwc3_lsp_write, | |
383 | .read = seq_read, | |
384 | .llseek = seq_lseek, | |
385 | .release = single_release, | |
386 | }; | |
387 | ||
0b9fe32d FB |
388 | static int dwc3_mode_show(struct seq_file *s, void *unused) |
389 | { | |
390 | struct dwc3 *dwc = s->private; | |
391 | unsigned long flags; | |
392 | u32 reg; | |
393 | ||
394 | spin_lock_irqsave(&dwc->lock, flags); | |
395 | reg = dwc3_readl(dwc->regs, DWC3_GCTL); | |
396 | spin_unlock_irqrestore(&dwc->lock, flags); | |
397 | ||
398 | switch (DWC3_GCTL_PRTCAP(reg)) { | |
399 | case DWC3_GCTL_PRTCAP_HOST: | |
400 | seq_printf(s, "host\n"); | |
401 | break; | |
402 | case DWC3_GCTL_PRTCAP_DEVICE: | |
403 | seq_printf(s, "device\n"); | |
404 | break; | |
405 | case DWC3_GCTL_PRTCAP_OTG: | |
2df301cd | 406 | seq_printf(s, "otg\n"); |
0b9fe32d FB |
407 | break; |
408 | default: | |
409 | seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg)); | |
410 | } | |
411 | ||
412 | return 0; | |
413 | } | |
414 | ||
415 | static int dwc3_mode_open(struct inode *inode, struct file *file) | |
416 | { | |
417 | return single_open(file, dwc3_mode_show, inode->i_private); | |
418 | } | |
419 | ||
420 | static ssize_t dwc3_mode_write(struct file *file, | |
421 | const char __user *ubuf, size_t count, loff_t *ppos) | |
422 | { | |
423 | struct seq_file *s = file->private_data; | |
424 | struct dwc3 *dwc = s->private; | |
3140e8cb | 425 | u32 mode = 0; |
0b9fe32d FB |
426 | char buf[32]; |
427 | ||
428 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
429 | return -EFAULT; | |
430 | ||
0b9fe32d | 431 | if (!strncmp(buf, "host", 4)) |
b202c42c | 432 | mode = DWC3_GCTL_PRTCAP_HOST; |
0b9fe32d FB |
433 | |
434 | if (!strncmp(buf, "device", 6)) | |
b202c42c | 435 | mode = DWC3_GCTL_PRTCAP_DEVICE; |
0b9fe32d FB |
436 | |
437 | if (!strncmp(buf, "otg", 3)) | |
b202c42c | 438 | mode = DWC3_GCTL_PRTCAP_OTG; |
0b9fe32d | 439 | |
41ce1456 RQ |
440 | dwc3_set_mode(dwc, mode); |
441 | ||
0b9fe32d FB |
442 | return count; |
443 | } | |
444 | ||
445 | static const struct file_operations dwc3_mode_fops = { | |
446 | .open = dwc3_mode_open, | |
447 | .write = dwc3_mode_write, | |
448 | .read = seq_read, | |
449 | .llseek = seq_lseek, | |
450 | .release = single_release, | |
451 | }; | |
452 | ||
080d921f FB |
453 | static int dwc3_testmode_show(struct seq_file *s, void *unused) |
454 | { | |
455 | struct dwc3 *dwc = s->private; | |
456 | unsigned long flags; | |
457 | u32 reg; | |
458 | ||
459 | spin_lock_irqsave(&dwc->lock, flags); | |
460 | reg = dwc3_readl(dwc->regs, DWC3_DCTL); | |
461 | reg &= DWC3_DCTL_TSTCTRL_MASK; | |
462 | reg >>= 1; | |
463 | spin_unlock_irqrestore(&dwc->lock, flags); | |
464 | ||
465 | switch (reg) { | |
466 | case 0: | |
467 | seq_printf(s, "no test\n"); | |
468 | break; | |
62fb45d3 | 469 | case USB_TEST_J: |
080d921f FB |
470 | seq_printf(s, "test_j\n"); |
471 | break; | |
62fb45d3 | 472 | case USB_TEST_K: |
080d921f FB |
473 | seq_printf(s, "test_k\n"); |
474 | break; | |
62fb45d3 | 475 | case USB_TEST_SE0_NAK: |
080d921f FB |
476 | seq_printf(s, "test_se0_nak\n"); |
477 | break; | |
62fb45d3 | 478 | case USB_TEST_PACKET: |
080d921f FB |
479 | seq_printf(s, "test_packet\n"); |
480 | break; | |
62fb45d3 | 481 | case USB_TEST_FORCE_ENABLE: |
080d921f FB |
482 | seq_printf(s, "test_force_enable\n"); |
483 | break; | |
484 | default: | |
485 | seq_printf(s, "UNKNOWN %d\n", reg); | |
486 | } | |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
491 | static int dwc3_testmode_open(struct inode *inode, struct file *file) | |
492 | { | |
493 | return single_open(file, dwc3_testmode_show, inode->i_private); | |
494 | } | |
495 | ||
496 | static ssize_t dwc3_testmode_write(struct file *file, | |
497 | const char __user *ubuf, size_t count, loff_t *ppos) | |
498 | { | |
499 | struct seq_file *s = file->private_data; | |
500 | struct dwc3 *dwc = s->private; | |
501 | unsigned long flags; | |
502 | u32 testmode = 0; | |
503 | char buf[32]; | |
504 | ||
505 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
506 | return -EFAULT; | |
507 | ||
508 | if (!strncmp(buf, "test_j", 6)) | |
62fb45d3 | 509 | testmode = USB_TEST_J; |
080d921f | 510 | else if (!strncmp(buf, "test_k", 6)) |
62fb45d3 | 511 | testmode = USB_TEST_K; |
09072543 | 512 | else if (!strncmp(buf, "test_se0_nak", 12)) |
62fb45d3 | 513 | testmode = USB_TEST_SE0_NAK; |
09072543 | 514 | else if (!strncmp(buf, "test_packet", 11)) |
62fb45d3 | 515 | testmode = USB_TEST_PACKET; |
09072543 | 516 | else if (!strncmp(buf, "test_force_enable", 17)) |
62fb45d3 | 517 | testmode = USB_TEST_FORCE_ENABLE; |
080d921f FB |
518 | else |
519 | testmode = 0; | |
520 | ||
521 | spin_lock_irqsave(&dwc->lock, flags); | |
522 | dwc3_gadget_set_test_mode(dwc, testmode); | |
523 | spin_unlock_irqrestore(&dwc->lock, flags); | |
524 | ||
525 | return count; | |
526 | } | |
527 | ||
528 | static const struct file_operations dwc3_testmode_fops = { | |
529 | .open = dwc3_testmode_open, | |
530 | .write = dwc3_testmode_write, | |
531 | .read = seq_read, | |
532 | .llseek = seq_lseek, | |
533 | .release = single_release, | |
534 | }; | |
535 | ||
138801aa FB |
536 | static int dwc3_link_state_show(struct seq_file *s, void *unused) |
537 | { | |
538 | struct dwc3 *dwc = s->private; | |
539 | unsigned long flags; | |
540 | enum dwc3_link_state state; | |
541 | u32 reg; | |
0d36dede | 542 | u8 speed; |
138801aa FB |
543 | |
544 | spin_lock_irqsave(&dwc->lock, flags); | |
d102444c TN |
545 | reg = dwc3_readl(dwc->regs, DWC3_GSTS); |
546 | if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { | |
547 | seq_puts(s, "Not available\n"); | |
548 | spin_unlock_irqrestore(&dwc->lock, flags); | |
549 | return 0; | |
550 | } | |
551 | ||
138801aa FB |
552 | reg = dwc3_readl(dwc->regs, DWC3_DSTS); |
553 | state = DWC3_DSTS_USBLNKST(reg); | |
0d36dede | 554 | speed = reg & DWC3_DSTS_CONNECTSPD; |
138801aa | 555 | |
0d36dede TN |
556 | seq_printf(s, "%s\n", (speed >= DWC3_DSTS_SUPERSPEED) ? |
557 | dwc3_gadget_link_string(state) : | |
558 | dwc3_gadget_hs_link_string(state)); | |
559 | spin_unlock_irqrestore(&dwc->lock, flags); | |
138801aa FB |
560 | |
561 | return 0; | |
562 | } | |
563 | ||
564 | static int dwc3_link_state_open(struct inode *inode, struct file *file) | |
565 | { | |
566 | return single_open(file, dwc3_link_state_show, inode->i_private); | |
567 | } | |
568 | ||
569 | static ssize_t dwc3_link_state_write(struct file *file, | |
570 | const char __user *ubuf, size_t count, loff_t *ppos) | |
571 | { | |
572 | struct seq_file *s = file->private_data; | |
573 | struct dwc3 *dwc = s->private; | |
574 | unsigned long flags; | |
575 | enum dwc3_link_state state = 0; | |
576 | char buf[32]; | |
0d36dede TN |
577 | u32 reg; |
578 | u8 speed; | |
138801aa FB |
579 | |
580 | if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) | |
581 | return -EFAULT; | |
582 | ||
583 | if (!strncmp(buf, "SS.Disabled", 11)) | |
584 | state = DWC3_LINK_STATE_SS_DIS; | |
585 | else if (!strncmp(buf, "Rx.Detect", 9)) | |
586 | state = DWC3_LINK_STATE_RX_DET; | |
587 | else if (!strncmp(buf, "SS.Inactive", 11)) | |
588 | state = DWC3_LINK_STATE_SS_INACT; | |
589 | else if (!strncmp(buf, "Recovery", 8)) | |
590 | state = DWC3_LINK_STATE_RECOV; | |
591 | else if (!strncmp(buf, "Compliance", 10)) | |
592 | state = DWC3_LINK_STATE_CMPLY; | |
593 | else if (!strncmp(buf, "Loopback", 8)) | |
594 | state = DWC3_LINK_STATE_LPBK; | |
595 | else | |
596 | return -EINVAL; | |
597 | ||
598 | spin_lock_irqsave(&dwc->lock, flags); | |
d102444c TN |
599 | reg = dwc3_readl(dwc->regs, DWC3_GSTS); |
600 | if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { | |
601 | spin_unlock_irqrestore(&dwc->lock, flags); | |
602 | return -EINVAL; | |
603 | } | |
604 | ||
0d36dede TN |
605 | reg = dwc3_readl(dwc->regs, DWC3_DSTS); |
606 | speed = reg & DWC3_DSTS_CONNECTSPD; | |
607 | ||
608 | if (speed < DWC3_DSTS_SUPERSPEED && | |
609 | state != DWC3_LINK_STATE_RECOV) { | |
610 | spin_unlock_irqrestore(&dwc->lock, flags); | |
611 | return -EINVAL; | |
612 | } | |
613 | ||
138801aa FB |
614 | dwc3_gadget_set_link_state(dwc, state); |
615 | spin_unlock_irqrestore(&dwc->lock, flags); | |
616 | ||
617 | return count; | |
618 | } | |
619 | ||
620 | static const struct file_operations dwc3_link_state_fops = { | |
621 | .open = dwc3_link_state_open, | |
622 | .write = dwc3_link_state_write, | |
623 | .read = seq_read, | |
624 | .llseek = seq_lseek, | |
625 | .release = single_release, | |
626 | }; | |
627 | ||
818ec3ab | 628 | struct dwc3_ep_file_map { |
6d5b53c1 FB |
629 | const char name[25]; |
630 | const struct file_operations *const fops; | |
818ec3ab FB |
631 | }; |
632 | ||
2c85a181 | 633 | static int dwc3_tx_fifo_size_show(struct seq_file *s, void *unused) |
818ec3ab FB |
634 | { |
635 | struct dwc3_ep *dep = s->private; | |
636 | struct dwc3 *dwc = dep->dwc; | |
637 | unsigned long flags; | |
4244ba02 | 638 | int mdwidth; |
818ec3ab FB |
639 | u32 val; |
640 | ||
641 | spin_lock_irqsave(&dwc->lock, flags); | |
2c85a181 | 642 | val = dwc3_core_fifo_space(dep, DWC3_TXFIFO); |
0f874f79 TN |
643 | |
644 | /* Convert to bytes */ | |
4244ba02 TN |
645 | mdwidth = DWC3_MDWIDTH(dwc->hwparams.hwparams0); |
646 | if (DWC3_IP_IS(DWC32)) | |
647 | mdwidth += DWC3_GHWPARAMS6_MDWIDTH(dwc->hwparams.hwparams6); | |
648 | ||
649 | val *= mdwidth; | |
0f874f79 | 650 | val >>= 3; |
818ec3ab FB |
651 | seq_printf(s, "%u\n", val); |
652 | spin_unlock_irqrestore(&dwc->lock, flags); | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
2c85a181 | 657 | static int dwc3_rx_fifo_size_show(struct seq_file *s, void *unused) |
818ec3ab FB |
658 | { |
659 | struct dwc3_ep *dep = s->private; | |
660 | struct dwc3 *dwc = dep->dwc; | |
661 | unsigned long flags; | |
4244ba02 | 662 | int mdwidth; |
818ec3ab FB |
663 | u32 val; |
664 | ||
665 | spin_lock_irqsave(&dwc->lock, flags); | |
2c85a181 | 666 | val = dwc3_core_fifo_space(dep, DWC3_RXFIFO); |
0f874f79 TN |
667 | |
668 | /* Convert to bytes */ | |
4244ba02 TN |
669 | mdwidth = DWC3_MDWIDTH(dwc->hwparams.hwparams0); |
670 | if (DWC3_IP_IS(DWC32)) | |
671 | mdwidth += DWC3_GHWPARAMS6_MDWIDTH(dwc->hwparams.hwparams6); | |
672 | ||
673 | val *= mdwidth; | |
0f874f79 | 674 | val >>= 3; |
818ec3ab FB |
675 | seq_printf(s, "%u\n", val); |
676 | spin_unlock_irqrestore(&dwc->lock, flags); | |
677 | ||
678 | return 0; | |
679 | } | |
680 | ||
681 | static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused) | |
682 | { | |
683 | struct dwc3_ep *dep = s->private; | |
684 | struct dwc3 *dwc = dep->dwc; | |
685 | unsigned long flags; | |
686 | u32 val; | |
687 | ||
688 | spin_lock_irqsave(&dwc->lock, flags); | |
689 | val = dwc3_core_fifo_space(dep, DWC3_TXREQQ); | |
690 | seq_printf(s, "%u\n", val); | |
691 | spin_unlock_irqrestore(&dwc->lock, flags); | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
696 | static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused) | |
697 | { | |
698 | struct dwc3_ep *dep = s->private; | |
699 | struct dwc3 *dwc = dep->dwc; | |
700 | unsigned long flags; | |
701 | u32 val; | |
702 | ||
703 | spin_lock_irqsave(&dwc->lock, flags); | |
704 | val = dwc3_core_fifo_space(dep, DWC3_RXREQQ); | |
705 | seq_printf(s, "%u\n", val); | |
706 | spin_unlock_irqrestore(&dwc->lock, flags); | |
707 | ||
708 | return 0; | |
709 | } | |
710 | ||
711 | static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused) | |
712 | { | |
713 | struct dwc3_ep *dep = s->private; | |
714 | struct dwc3 *dwc = dep->dwc; | |
715 | unsigned long flags; | |
716 | u32 val; | |
717 | ||
718 | spin_lock_irqsave(&dwc->lock, flags); | |
719 | val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ); | |
720 | seq_printf(s, "%u\n", val); | |
721 | spin_unlock_irqrestore(&dwc->lock, flags); | |
722 | ||
723 | return 0; | |
724 | } | |
725 | ||
726 | static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused) | |
727 | { | |
728 | struct dwc3_ep *dep = s->private; | |
729 | struct dwc3 *dwc = dep->dwc; | |
730 | unsigned long flags; | |
731 | u32 val; | |
732 | ||
733 | spin_lock_irqsave(&dwc->lock, flags); | |
734 | val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ); | |
735 | seq_printf(s, "%u\n", val); | |
736 | spin_unlock_irqrestore(&dwc->lock, flags); | |
737 | ||
738 | return 0; | |
739 | } | |
740 | ||
741 | static int dwc3_event_queue_show(struct seq_file *s, void *unused) | |
742 | { | |
743 | struct dwc3_ep *dep = s->private; | |
744 | struct dwc3 *dwc = dep->dwc; | |
745 | unsigned long flags; | |
746 | u32 val; | |
747 | ||
748 | spin_lock_irqsave(&dwc->lock, flags); | |
749 | val = dwc3_core_fifo_space(dep, DWC3_EVENTQ); | |
750 | seq_printf(s, "%u\n", val); | |
751 | spin_unlock_irqrestore(&dwc->lock, flags); | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
6d5b53c1 | 756 | static int dwc3_transfer_type_show(struct seq_file *s, void *unused) |
818ec3ab FB |
757 | { |
758 | struct dwc3_ep *dep = s->private; | |
759 | struct dwc3 *dwc = dep->dwc; | |
760 | unsigned long flags; | |
761 | ||
762 | spin_lock_irqsave(&dwc->lock, flags); | |
763 | if (!(dep->flags & DWC3_EP_ENABLED) || | |
764 | !dep->endpoint.desc) { | |
765 | seq_printf(s, "--\n"); | |
766 | goto out; | |
767 | } | |
768 | ||
769 | switch (usb_endpoint_type(dep->endpoint.desc)) { | |
770 | case USB_ENDPOINT_XFER_CONTROL: | |
771 | seq_printf(s, "control\n"); | |
772 | break; | |
773 | case USB_ENDPOINT_XFER_ISOC: | |
774 | seq_printf(s, "isochronous\n"); | |
775 | break; | |
776 | case USB_ENDPOINT_XFER_BULK: | |
777 | seq_printf(s, "bulk\n"); | |
778 | break; | |
779 | case USB_ENDPOINT_XFER_INT: | |
780 | seq_printf(s, "interrupt\n"); | |
781 | break; | |
782 | default: | |
783 | seq_printf(s, "--\n"); | |
784 | } | |
785 | ||
786 | out: | |
787 | spin_unlock_irqrestore(&dwc->lock, flags); | |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
6d5b53c1 | 792 | static int dwc3_trb_ring_show(struct seq_file *s, void *unused) |
818ec3ab FB |
793 | { |
794 | struct dwc3_ep *dep = s->private; | |
795 | struct dwc3 *dwc = dep->dwc; | |
796 | unsigned long flags; | |
797 | int i; | |
798 | ||
799 | spin_lock_irqsave(&dwc->lock, flags); | |
800 | if (dep->number <= 1) { | |
801 | seq_printf(s, "--\n"); | |
802 | goto out; | |
803 | } | |
804 | ||
818ec3ab FB |
805 | seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n"); |
806 | ||
807 | for (i = 0; i < DWC3_TRB_NUM; i++) { | |
808 | struct dwc3_trb *trb = &dep->trb_pool[i]; | |
b5c7ed5c | 809 | unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl); |
818ec3ab | 810 | |
436841d5 | 811 | seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n", |
818ec3ab | 812 | trb->bph, trb->bpl, trb->size, |
b5c7ed5c | 813 | dwc3_trb_type_string(type), |
818ec3ab FB |
814 | !!(trb->ctrl & DWC3_TRB_CTRL_IOC), |
815 | !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI), | |
816 | !!(trb->ctrl & DWC3_TRB_CTRL_CSP), | |
817 | !!(trb->ctrl & DWC3_TRB_CTRL_CHN), | |
818 | !!(trb->ctrl & DWC3_TRB_CTRL_LST), | |
436841d5 FB |
819 | !!(trb->ctrl & DWC3_TRB_CTRL_HWO), |
820 | dep->trb_enqueue == i ? 'E' : ' ', | |
821 | dep->trb_dequeue == i ? 'D' : ' '); | |
818ec3ab FB |
822 | } |
823 | ||
824 | out: | |
825 | spin_unlock_irqrestore(&dwc->lock, flags); | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
62ba09d6 TN |
830 | static int dwc3_ep_info_register_show(struct seq_file *s, void *unused) |
831 | { | |
832 | struct dwc3_ep *dep = s->private; | |
833 | struct dwc3 *dwc = dep->dwc; | |
834 | unsigned long flags; | |
835 | u64 ep_info; | |
836 | u32 lower_32_bits; | |
837 | u32 upper_32_bits; | |
838 | u32 reg; | |
839 | ||
840 | spin_lock_irqsave(&dwc->lock, flags); | |
841 | reg = DWC3_GDBGLSPMUX_EPSELECT(dep->number); | |
842 | dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); | |
843 | ||
844 | lower_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO0); | |
845 | upper_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO1); | |
846 | ||
847 | ep_info = ((u64)upper_32_bits << 32) | lower_32_bits; | |
848 | seq_printf(s, "0x%016llx\n", ep_info); | |
849 | spin_unlock_irqrestore(&dwc->lock, flags); | |
850 | ||
851 | return 0; | |
852 | } | |
853 | ||
2c85a181 TN |
854 | DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_size); |
855 | DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_size); | |
6d5b53c1 FB |
856 | DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue); |
857 | DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue); | |
858 | DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue); | |
859 | DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue); | |
860 | DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue); | |
861 | DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type); | |
862 | DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring); | |
62ba09d6 | 863 | DEFINE_SHOW_ATTRIBUTE(dwc3_ep_info_register); |
6d5b53c1 FB |
864 | |
865 | static const struct dwc3_ep_file_map dwc3_ep_file_map[] = { | |
2c85a181 TN |
866 | { "tx_fifo_size", &dwc3_tx_fifo_size_fops, }, |
867 | { "rx_fifo_size", &dwc3_rx_fifo_size_fops, }, | |
6d5b53c1 FB |
868 | { "tx_request_queue", &dwc3_tx_request_queue_fops, }, |
869 | { "rx_request_queue", &dwc3_rx_request_queue_fops, }, | |
870 | { "rx_info_queue", &dwc3_rx_info_queue_fops, }, | |
871 | { "descriptor_fetch_queue", &dwc3_descriptor_fetch_queue_fops, }, | |
872 | { "event_queue", &dwc3_event_queue_fops, }, | |
873 | { "transfer_type", &dwc3_transfer_type_fops, }, | |
874 | { "trb_ring", &dwc3_trb_ring_fops, }, | |
62ba09d6 | 875 | { "GDBGEPINFO", &dwc3_ep_info_register_fops, }, |
818ec3ab FB |
876 | }; |
877 | ||
818ec3ab FB |
878 | static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep, |
879 | struct dentry *parent) | |
880 | { | |
881 | int i; | |
882 | ||
6d5b53c1 FB |
883 | for (i = 0; i < ARRAY_SIZE(dwc3_ep_file_map); i++) { |
884 | const struct file_operations *fops = dwc3_ep_file_map[i].fops; | |
885 | const char *name = dwc3_ep_file_map[i].name; | |
886 | ||
887 | debugfs_create_file(name, S_IRUGO, parent, dep, fops); | |
888 | } | |
818ec3ab FB |
889 | } |
890 | ||
891 | static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep, | |
892 | struct dentry *parent) | |
893 | { | |
894 | struct dentry *dir; | |
895 | ||
896 | dir = debugfs_create_dir(dep->name, parent); | |
818ec3ab FB |
897 | dwc3_debugfs_create_endpoint_files(dep, dir); |
898 | } | |
899 | ||
900 | static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc, | |
901 | struct dentry *parent) | |
902 | { | |
903 | int i; | |
904 | ||
47d3946e BD |
905 | for (i = 0; i < dwc->num_eps; i++) { |
906 | struct dwc3_ep *dep = dwc->eps[i]; | |
818ec3ab FB |
907 | |
908 | if (!dep) | |
909 | continue; | |
910 | ||
911 | dwc3_debugfs_create_endpoint_dir(dep, parent); | |
72246da4 | 912 | } |
818ec3ab FB |
913 | } |
914 | ||
4e9f3118 | 915 | void dwc3_debugfs_init(struct dwc3 *dwc) |
72246da4 FB |
916 | { |
917 | struct dentry *root; | |
72246da4 | 918 | |
d7668024 | 919 | dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); |
535c8dc5 | 920 | if (!dwc->regset) |
4e9f3118 | 921 | return; |
d7668024 | 922 | |
62ba09d6 TN |
923 | dwc->dbg_lsp_select = DWC3_LSP_MUX_UNSELECTED; |
924 | ||
d7668024 FB |
925 | dwc->regset->regs = dwc3_regs; |
926 | dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); | |
2eb88016 | 927 | dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START; |
d7668024 | 928 | |
dcf5a2c3 | 929 | root = debugfs_create_dir(dev_name(dwc->dev), usb_debug_root); |
535c8dc5 GKH |
930 | dwc->root = root; |
931 | ||
932 | debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset); | |
0b9fe32d | 933 | |
62ba09d6 TN |
934 | debugfs_create_file("lsp_dump", S_IRUGO | S_IWUSR, root, dwc, |
935 | &dwc3_lsp_fops); | |
936 | ||
dbfff05d | 937 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) { |
535c8dc5 GKH |
938 | debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, dwc, |
939 | &dwc3_mode_fops); | |
0b9fe32d FB |
940 | } |
941 | ||
dbfff05d FB |
942 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) || |
943 | IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { | |
535c8dc5 GKH |
944 | debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root, dwc, |
945 | &dwc3_testmode_fops); | |
946 | debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root, dwc, | |
947 | &dwc3_link_state_fops); | |
818ec3ab | 948 | dwc3_debugfs_create_endpoint_dirs(dwc, root); |
4e9f3118 | 949 | } |
72246da4 FB |
950 | } |
951 | ||
fb4e98ab | 952 | void dwc3_debugfs_exit(struct dwc3 *dwc) |
72246da4 FB |
953 | { |
954 | debugfs_remove_recursive(dwc->root); | |
e6bdf819 | 955 | kfree(dwc->regset); |
72246da4 | 956 | } |