1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * debugfs.c - DesignWare USB3 DRD Controller DebugFS file |
4 | * |
5 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com |
6 | * |
7 | * Authors: Felipe Balbi <balbi@ti.com>, |
8 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
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> |
19 | #include <linux/uaccess.h> |
20 | |
21 | #include <linux/usb/ch9.h> |
22 | |
23 | #include "core.h" |
24 | #include "gadget.h" |
25 | #include "io.h" |
26 | #include "debug.h" |
27 | |
28 | #define DWC3_LSP_MUX_UNSELECTED 0xfffff |
29 | |
30 | #define dump_register(nm) \ |
31 | { \ |
32 | .name = __stringify(nm), \ |
33 | .offset = DWC3_ ##nm, \ |
34 | } |
35 | |
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 | |
59 | static const struct debugfs_reg32 dwc3_regs[] = { |
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), |
67 | dump_register(GUCTL1), |
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), |
86 | dump_register(GDBGBMU), |
87 | dump_register(GPRTBIMAP_HS0), |
88 | dump_register(GPRTBIMAP_HS1), |
89 | dump_register(GPRTBIMAP_FS0), |
90 | dump_register(GPRTBIMAP_FS1), |
91 | dump_register(GUCTL2), |
92 | dump_register(VER_NUMBER), |
93 | dump_register(VER_TYPE), |
94 | |
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)), |
111 | |
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)), |
128 | |
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)), |
145 | |
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)), |
162 | |
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)), |
195 | |
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)), |
228 | |
229 | dump_register(GEVNTADRLO(0)), |
230 | dump_register(GEVNTADRHI(0)), |
231 | dump_register(GEVNTSIZ(0)), |
232 | dump_register(GEVNTCOUNT(0)), |
233 | |
234 | dump_register(GHWPARAMS8), |
235 | dump_register(GUCTL3), |
236 | dump_register(GFLADJ), |
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_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), |
277 | |
278 | dump_register(OCFG), |
279 | dump_register(OCTL), |
280 | dump_register(OEVT), |
281 | dump_register(OEVTEN), |
282 | dump_register(OSTS), |
283 | }; |
284 | |
285 | static void dwc3_host_lsp(struct seq_file *s) |
286 | { |
287 | struct dwc3 *dwc = s->private; |
288 | bool dbc_enabled; |
289 | u32 sel; |
290 | u32 reg; |
291 | u32 val; |
292 | |
293 | dbc_enabled = !!(dwc->hwparams.hwparams1 & DWC3_GHWPARAMS1_ENDBC); |
294 | |
295 | sel = dwc->dbg_lsp_select; |
296 | if (sel == DWC3_LSP_MUX_UNSELECTED) { |
297 | seq_puts(m: s, s: "Write LSP selection to print for host\n" ); |
298 | return; |
299 | } |
300 | |
301 | reg = DWC3_GDBGLSPMUX_HOSTSELECT(sel); |
302 | |
303 | dwc3_writel(base: dwc->regs, DWC3_GDBGLSPMUX, value: reg); |
304 | val = dwc3_readl(base: dwc->regs, DWC3_GDBGLSP); |
305 | seq_printf(m: s, fmt: "GDBGLSP[%d] = 0x%08x\n" , sel, val); |
306 | |
307 | if (dbc_enabled && sel < 256) { |
308 | reg |= DWC3_GDBGLSPMUX_ENDBC; |
309 | dwc3_writel(base: dwc->regs, DWC3_GDBGLSPMUX, value: reg); |
310 | val = dwc3_readl(base: dwc->regs, DWC3_GDBGLSP); |
311 | seq_printf(m: s, fmt: "GDBGLSP_DBC[%d] = 0x%08x\n" , sel, val); |
312 | } |
313 | } |
314 | |
315 | static void dwc3_gadget_lsp(struct seq_file *s) |
316 | { |
317 | struct dwc3 *dwc = s->private; |
318 | int i; |
319 | u32 reg; |
320 | |
321 | for (i = 0; i < 16; i++) { |
322 | reg = DWC3_GDBGLSPMUX_DEVSELECT(i); |
323 | dwc3_writel(base: dwc->regs, DWC3_GDBGLSPMUX, value: reg); |
324 | reg = dwc3_readl(base: dwc->regs, DWC3_GDBGLSP); |
325 | seq_printf(m: s, fmt: "GDBGLSP[%d] = 0x%08x\n" , i, reg); |
326 | } |
327 | } |
328 | |
329 | static int dwc3_lsp_show(struct seq_file *s, void *unused) |
330 | { |
331 | struct dwc3 *dwc = s->private; |
332 | unsigned int current_mode; |
333 | unsigned long flags; |
334 | u32 reg; |
335 | int ret; |
336 | |
337 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
338 | if (ret < 0) |
339 | return ret; |
340 | |
341 | spin_lock_irqsave(&dwc->lock, flags); |
342 | reg = dwc3_readl(base: dwc->regs, DWC3_GSTS); |
343 | current_mode = DWC3_GSTS_CURMOD(reg); |
344 | |
345 | switch (current_mode) { |
346 | case DWC3_GSTS_CURMOD_HOST: |
347 | dwc3_host_lsp(s); |
348 | break; |
349 | case DWC3_GSTS_CURMOD_DEVICE: |
350 | dwc3_gadget_lsp(s); |
351 | break; |
352 | default: |
353 | seq_puts(m: s, s: "Mode is unknown, no LSP register printed\n" ); |
354 | break; |
355 | } |
356 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
357 | |
358 | pm_runtime_put_sync(dev: dwc->dev); |
359 | |
360 | return 0; |
361 | } |
362 | |
363 | static int dwc3_lsp_open(struct inode *inode, struct file *file) |
364 | { |
365 | return single_open(file, dwc3_lsp_show, inode->i_private); |
366 | } |
367 | |
368 | static ssize_t dwc3_lsp_write(struct file *file, const char __user *ubuf, |
369 | size_t count, loff_t *ppos) |
370 | { |
371 | struct seq_file *s = file->private_data; |
372 | struct dwc3 *dwc = s->private; |
373 | unsigned long flags; |
374 | char buf[32] = { 0 }; |
375 | u32 sel; |
376 | int ret; |
377 | |
378 | if (copy_from_user(to: &buf, from: ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
379 | return -EFAULT; |
380 | |
381 | ret = kstrtouint(s: buf, base: 0, res: &sel); |
382 | if (ret) |
383 | return ret; |
384 | |
385 | spin_lock_irqsave(&dwc->lock, flags); |
386 | dwc->dbg_lsp_select = sel; |
387 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
388 | |
389 | return count; |
390 | } |
391 | |
392 | static const struct file_operations dwc3_lsp_fops = { |
393 | .open = dwc3_lsp_open, |
394 | .write = dwc3_lsp_write, |
395 | .read = seq_read, |
396 | .llseek = seq_lseek, |
397 | .release = single_release, |
398 | }; |
399 | |
400 | static int dwc3_mode_show(struct seq_file *s, void *unused) |
401 | { |
402 | struct dwc3 *dwc = s->private; |
403 | unsigned long flags; |
404 | u32 reg; |
405 | int ret; |
406 | |
407 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
408 | if (ret < 0) |
409 | return ret; |
410 | |
411 | spin_lock_irqsave(&dwc->lock, flags); |
412 | reg = dwc3_readl(base: dwc->regs, DWC3_GCTL); |
413 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
414 | |
415 | switch (DWC3_GCTL_PRTCAP(reg)) { |
416 | case DWC3_GCTL_PRTCAP_HOST: |
417 | seq_puts(m: s, s: "host\n" ); |
418 | break; |
419 | case DWC3_GCTL_PRTCAP_DEVICE: |
420 | seq_puts(m: s, s: "device\n" ); |
421 | break; |
422 | case DWC3_GCTL_PRTCAP_OTG: |
423 | seq_puts(m: s, s: "otg\n" ); |
424 | break; |
425 | default: |
426 | seq_printf(m: s, fmt: "UNKNOWN %08x\n" , DWC3_GCTL_PRTCAP(reg)); |
427 | } |
428 | |
429 | pm_runtime_put_sync(dev: dwc->dev); |
430 | |
431 | return 0; |
432 | } |
433 | |
434 | static int dwc3_mode_open(struct inode *inode, struct file *file) |
435 | { |
436 | return single_open(file, dwc3_mode_show, inode->i_private); |
437 | } |
438 | |
439 | static ssize_t dwc3_mode_write(struct file *file, |
440 | const char __user *ubuf, size_t count, loff_t *ppos) |
441 | { |
442 | struct seq_file *s = file->private_data; |
443 | struct dwc3 *dwc = s->private; |
444 | u32 mode = 0; |
445 | char buf[32]; |
446 | |
447 | if (copy_from_user(to: &buf, from: ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
448 | return -EFAULT; |
449 | |
450 | if (dwc->dr_mode != USB_DR_MODE_OTG) |
451 | return count; |
452 | |
453 | if (!strncmp(buf, "host" , 4)) |
454 | mode = DWC3_GCTL_PRTCAP_HOST; |
455 | |
456 | if (!strncmp(buf, "device" , 6)) |
457 | mode = DWC3_GCTL_PRTCAP_DEVICE; |
458 | |
459 | if (!strncmp(buf, "otg" , 3)) |
460 | mode = DWC3_GCTL_PRTCAP_OTG; |
461 | |
462 | dwc3_set_mode(dwc, mode); |
463 | |
464 | return count; |
465 | } |
466 | |
467 | static const struct file_operations dwc3_mode_fops = { |
468 | .open = dwc3_mode_open, |
469 | .write = dwc3_mode_write, |
470 | .read = seq_read, |
471 | .llseek = seq_lseek, |
472 | .release = single_release, |
473 | }; |
474 | |
475 | static int dwc3_testmode_show(struct seq_file *s, void *unused) |
476 | { |
477 | struct dwc3 *dwc = s->private; |
478 | unsigned long flags; |
479 | u32 reg; |
480 | int ret; |
481 | |
482 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
483 | if (ret < 0) |
484 | return ret; |
485 | |
486 | spin_lock_irqsave(&dwc->lock, flags); |
487 | reg = dwc3_readl(base: dwc->regs, DWC3_DCTL); |
488 | reg &= DWC3_DCTL_TSTCTRL_MASK; |
489 | reg >>= 1; |
490 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
491 | |
492 | switch (reg) { |
493 | case 0: |
494 | seq_puts(m: s, s: "no test\n" ); |
495 | break; |
496 | case USB_TEST_J: |
497 | seq_puts(m: s, s: "test_j\n" ); |
498 | break; |
499 | case USB_TEST_K: |
500 | seq_puts(m: s, s: "test_k\n" ); |
501 | break; |
502 | case USB_TEST_SE0_NAK: |
503 | seq_puts(m: s, s: "test_se0_nak\n" ); |
504 | break; |
505 | case USB_TEST_PACKET: |
506 | seq_puts(m: s, s: "test_packet\n" ); |
507 | break; |
508 | case USB_TEST_FORCE_ENABLE: |
509 | seq_puts(m: s, s: "test_force_enable\n" ); |
510 | break; |
511 | default: |
512 | seq_printf(m: s, fmt: "UNKNOWN %d\n" , reg); |
513 | } |
514 | |
515 | pm_runtime_put_sync(dev: dwc->dev); |
516 | |
517 | return 0; |
518 | } |
519 | |
520 | static int dwc3_testmode_open(struct inode *inode, struct file *file) |
521 | { |
522 | return single_open(file, dwc3_testmode_show, inode->i_private); |
523 | } |
524 | |
525 | static ssize_t dwc3_testmode_write(struct file *file, |
526 | const char __user *ubuf, size_t count, loff_t *ppos) |
527 | { |
528 | struct seq_file *s = file->private_data; |
529 | struct dwc3 *dwc = s->private; |
530 | unsigned long flags; |
531 | u32 testmode = 0; |
532 | char buf[32]; |
533 | int ret; |
534 | |
535 | if (copy_from_user(to: &buf, from: ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
536 | return -EFAULT; |
537 | |
538 | if (!strncmp(buf, "test_j" , 6)) |
539 | testmode = USB_TEST_J; |
540 | else if (!strncmp(buf, "test_k" , 6)) |
541 | testmode = USB_TEST_K; |
542 | else if (!strncmp(buf, "test_se0_nak" , 12)) |
543 | testmode = USB_TEST_SE0_NAK; |
544 | else if (!strncmp(buf, "test_packet" , 11)) |
545 | testmode = USB_TEST_PACKET; |
546 | else if (!strncmp(buf, "test_force_enable" , 17)) |
547 | testmode = USB_TEST_FORCE_ENABLE; |
548 | else |
549 | testmode = 0; |
550 | |
551 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
552 | if (ret < 0) |
553 | return ret; |
554 | |
555 | spin_lock_irqsave(&dwc->lock, flags); |
556 | dwc3_gadget_set_test_mode(dwc, mode: testmode); |
557 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
558 | |
559 | pm_runtime_put_sync(dev: dwc->dev); |
560 | |
561 | return count; |
562 | } |
563 | |
564 | static const struct file_operations dwc3_testmode_fops = { |
565 | .open = dwc3_testmode_open, |
566 | .write = dwc3_testmode_write, |
567 | .read = seq_read, |
568 | .llseek = seq_lseek, |
569 | .release = single_release, |
570 | }; |
571 | |
572 | static int dwc3_link_state_show(struct seq_file *s, void *unused) |
573 | { |
574 | struct dwc3 *dwc = s->private; |
575 | unsigned long flags; |
576 | enum dwc3_link_state state; |
577 | u32 reg; |
578 | u8 speed; |
579 | int ret; |
580 | |
581 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
582 | if (ret < 0) |
583 | return ret; |
584 | |
585 | spin_lock_irqsave(&dwc->lock, flags); |
586 | reg = dwc3_readl(base: dwc->regs, DWC3_GSTS); |
587 | if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { |
588 | seq_puts(m: s, s: "Not available\n" ); |
589 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
590 | pm_runtime_put_sync(dev: dwc->dev); |
591 | return 0; |
592 | } |
593 | |
594 | reg = dwc3_readl(base: dwc->regs, DWC3_DSTS); |
595 | state = DWC3_DSTS_USBLNKST(reg); |
596 | speed = reg & DWC3_DSTS_CONNECTSPD; |
597 | |
598 | seq_printf(m: s, fmt: "%s\n" , (speed >= DWC3_DSTS_SUPERSPEED) ? |
599 | dwc3_gadget_link_string(link_state: state) : |
600 | dwc3_gadget_hs_link_string(link_state: state)); |
601 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
602 | |
603 | pm_runtime_put_sync(dev: dwc->dev); |
604 | |
605 | return 0; |
606 | } |
607 | |
608 | static int dwc3_link_state_open(struct inode *inode, struct file *file) |
609 | { |
610 | return single_open(file, dwc3_link_state_show, inode->i_private); |
611 | } |
612 | |
613 | static ssize_t dwc3_link_state_write(struct file *file, |
614 | const char __user *ubuf, size_t count, loff_t *ppos) |
615 | { |
616 | struct seq_file *s = file->private_data; |
617 | struct dwc3 *dwc = s->private; |
618 | unsigned long flags; |
619 | enum dwc3_link_state state = 0; |
620 | char buf[32]; |
621 | u32 reg; |
622 | u8 speed; |
623 | int ret; |
624 | |
625 | if (copy_from_user(to: &buf, from: ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
626 | return -EFAULT; |
627 | |
628 | if (!strncmp(buf, "SS.Disabled" , 11)) |
629 | state = DWC3_LINK_STATE_SS_DIS; |
630 | else if (!strncmp(buf, "Rx.Detect" , 9)) |
631 | state = DWC3_LINK_STATE_RX_DET; |
632 | else if (!strncmp(buf, "SS.Inactive" , 11)) |
633 | state = DWC3_LINK_STATE_SS_INACT; |
634 | else if (!strncmp(buf, "Recovery" , 8)) |
635 | state = DWC3_LINK_STATE_RECOV; |
636 | else if (!strncmp(buf, "Compliance" , 10)) |
637 | state = DWC3_LINK_STATE_CMPLY; |
638 | else if (!strncmp(buf, "Loopback" , 8)) |
639 | state = DWC3_LINK_STATE_LPBK; |
640 | else |
641 | return -EINVAL; |
642 | |
643 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
644 | if (ret < 0) |
645 | return ret; |
646 | |
647 | spin_lock_irqsave(&dwc->lock, flags); |
648 | reg = dwc3_readl(base: dwc->regs, DWC3_GSTS); |
649 | if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { |
650 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
651 | pm_runtime_put_sync(dev: dwc->dev); |
652 | return -EINVAL; |
653 | } |
654 | |
655 | reg = dwc3_readl(base: dwc->regs, DWC3_DSTS); |
656 | speed = reg & DWC3_DSTS_CONNECTSPD; |
657 | |
658 | if (speed < DWC3_DSTS_SUPERSPEED && |
659 | state != DWC3_LINK_STATE_RECOV) { |
660 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
661 | pm_runtime_put_sync(dev: dwc->dev); |
662 | return -EINVAL; |
663 | } |
664 | |
665 | dwc3_gadget_set_link_state(dwc, state); |
666 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
667 | |
668 | pm_runtime_put_sync(dev: dwc->dev); |
669 | |
670 | return count; |
671 | } |
672 | |
673 | static const struct file_operations dwc3_link_state_fops = { |
674 | .open = dwc3_link_state_open, |
675 | .write = dwc3_link_state_write, |
676 | .read = seq_read, |
677 | .llseek = seq_lseek, |
678 | .release = single_release, |
679 | }; |
680 | |
681 | struct dwc3_ep_file_map { |
682 | const char name[25]; |
683 | const struct file_operations *const fops; |
684 | }; |
685 | |
686 | static int dwc3_tx_fifo_size_show(struct seq_file *s, void *unused) |
687 | { |
688 | struct dwc3_ep *dep = s->private; |
689 | struct dwc3 *dwc = dep->dwc; |
690 | unsigned long flags; |
691 | u32 mdwidth; |
692 | u32 val; |
693 | int ret; |
694 | |
695 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
696 | if (ret < 0) |
697 | return ret; |
698 | |
699 | spin_lock_irqsave(&dwc->lock, flags); |
700 | val = dwc3_core_fifo_space(dep, DWC3_TXFIFO); |
701 | |
702 | /* Convert to bytes */ |
703 | mdwidth = dwc3_mdwidth(dwc); |
704 | |
705 | val *= mdwidth; |
706 | val >>= 3; |
707 | seq_printf(m: s, fmt: "%u\n" , val); |
708 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
709 | |
710 | pm_runtime_put_sync(dev: dwc->dev); |
711 | |
712 | return 0; |
713 | } |
714 | |
715 | static int dwc3_rx_fifo_size_show(struct seq_file *s, void *unused) |
716 | { |
717 | struct dwc3_ep *dep = s->private; |
718 | struct dwc3 *dwc = dep->dwc; |
719 | unsigned long flags; |
720 | u32 mdwidth; |
721 | u32 val; |
722 | int ret; |
723 | |
724 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
725 | if (ret < 0) |
726 | return ret; |
727 | |
728 | spin_lock_irqsave(&dwc->lock, flags); |
729 | val = dwc3_core_fifo_space(dep, DWC3_RXFIFO); |
730 | |
731 | /* Convert to bytes */ |
732 | mdwidth = dwc3_mdwidth(dwc); |
733 | |
734 | val *= mdwidth; |
735 | val >>= 3; |
736 | seq_printf(m: s, fmt: "%u\n" , val); |
737 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
738 | |
739 | pm_runtime_put_sync(dev: dwc->dev); |
740 | |
741 | return 0; |
742 | } |
743 | |
744 | static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused) |
745 | { |
746 | struct dwc3_ep *dep = s->private; |
747 | struct dwc3 *dwc = dep->dwc; |
748 | unsigned long flags; |
749 | u32 val; |
750 | int ret; |
751 | |
752 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
753 | if (ret < 0) |
754 | return ret; |
755 | |
756 | spin_lock_irqsave(&dwc->lock, flags); |
757 | val = dwc3_core_fifo_space(dep, DWC3_TXREQQ); |
758 | seq_printf(m: s, fmt: "%u\n" , val); |
759 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
760 | |
761 | pm_runtime_put_sync(dev: dwc->dev); |
762 | |
763 | return 0; |
764 | } |
765 | |
766 | static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused) |
767 | { |
768 | struct dwc3_ep *dep = s->private; |
769 | struct dwc3 *dwc = dep->dwc; |
770 | unsigned long flags; |
771 | u32 val; |
772 | int ret; |
773 | |
774 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
775 | if (ret < 0) |
776 | return ret; |
777 | |
778 | spin_lock_irqsave(&dwc->lock, flags); |
779 | val = dwc3_core_fifo_space(dep, DWC3_RXREQQ); |
780 | seq_printf(m: s, fmt: "%u\n" , val); |
781 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
782 | |
783 | pm_runtime_put_sync(dev: dwc->dev); |
784 | |
785 | return 0; |
786 | } |
787 | |
788 | static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused) |
789 | { |
790 | struct dwc3_ep *dep = s->private; |
791 | struct dwc3 *dwc = dep->dwc; |
792 | unsigned long flags; |
793 | u32 val; |
794 | int ret; |
795 | |
796 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
797 | if (ret < 0) |
798 | return ret; |
799 | |
800 | spin_lock_irqsave(&dwc->lock, flags); |
801 | val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ); |
802 | seq_printf(m: s, fmt: "%u\n" , val); |
803 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
804 | |
805 | pm_runtime_put_sync(dev: dwc->dev); |
806 | |
807 | return 0; |
808 | } |
809 | |
810 | static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused) |
811 | { |
812 | struct dwc3_ep *dep = s->private; |
813 | struct dwc3 *dwc = dep->dwc; |
814 | unsigned long flags; |
815 | u32 val; |
816 | int ret; |
817 | |
818 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
819 | if (ret < 0) |
820 | return ret; |
821 | |
822 | spin_lock_irqsave(&dwc->lock, flags); |
823 | val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ); |
824 | seq_printf(m: s, fmt: "%u\n" , val); |
825 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
826 | |
827 | pm_runtime_put_sync(dev: dwc->dev); |
828 | |
829 | return 0; |
830 | } |
831 | |
832 | static int dwc3_event_queue_show(struct seq_file *s, void *unused) |
833 | { |
834 | struct dwc3_ep *dep = s->private; |
835 | struct dwc3 *dwc = dep->dwc; |
836 | unsigned long flags; |
837 | u32 val; |
838 | int ret; |
839 | |
840 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
841 | if (ret < 0) |
842 | return ret; |
843 | |
844 | spin_lock_irqsave(&dwc->lock, flags); |
845 | val = dwc3_core_fifo_space(dep, DWC3_EVENTQ); |
846 | seq_printf(m: s, fmt: "%u\n" , val); |
847 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
848 | |
849 | pm_runtime_put_sync(dev: dwc->dev); |
850 | |
851 | return 0; |
852 | } |
853 | |
854 | static int dwc3_transfer_type_show(struct seq_file *s, void *unused) |
855 | { |
856 | struct dwc3_ep *dep = s->private; |
857 | struct dwc3 *dwc = dep->dwc; |
858 | unsigned long flags; |
859 | |
860 | spin_lock_irqsave(&dwc->lock, flags); |
861 | if (!(dep->flags & DWC3_EP_ENABLED) || !dep->endpoint.desc) { |
862 | seq_puts(m: s, s: "--\n" ); |
863 | goto out; |
864 | } |
865 | |
866 | switch (usb_endpoint_type(epd: dep->endpoint.desc)) { |
867 | case USB_ENDPOINT_XFER_CONTROL: |
868 | seq_puts(m: s, s: "control\n" ); |
869 | break; |
870 | case USB_ENDPOINT_XFER_ISOC: |
871 | seq_puts(m: s, s: "isochronous\n" ); |
872 | break; |
873 | case USB_ENDPOINT_XFER_BULK: |
874 | seq_puts(m: s, s: "bulk\n" ); |
875 | break; |
876 | case USB_ENDPOINT_XFER_INT: |
877 | seq_puts(m: s, s: "interrupt\n" ); |
878 | break; |
879 | default: |
880 | seq_puts(m: s, s: "--\n" ); |
881 | } |
882 | |
883 | out: |
884 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
885 | |
886 | return 0; |
887 | } |
888 | |
889 | static int dwc3_trb_ring_show(struct seq_file *s, void *unused) |
890 | { |
891 | struct dwc3_ep *dep = s->private; |
892 | struct dwc3 *dwc = dep->dwc; |
893 | unsigned long flags; |
894 | int i; |
895 | int ret; |
896 | |
897 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
898 | if (ret < 0) |
899 | return ret; |
900 | |
901 | spin_lock_irqsave(&dwc->lock, flags); |
902 | if (dep->number <= 1) { |
903 | seq_puts(m: s, s: "--\n" ); |
904 | goto out; |
905 | } |
906 | |
907 | seq_puts(m: s, s: "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n" ); |
908 | |
909 | for (i = 0; i < DWC3_TRB_NUM; i++) { |
910 | struct dwc3_trb *trb = &dep->trb_pool[i]; |
911 | unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl); |
912 | |
913 | seq_printf(m: s, fmt: "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n" , |
914 | trb->bph, trb->bpl, trb->size, |
915 | dwc3_trb_type_string(type), |
916 | !!(trb->ctrl & DWC3_TRB_CTRL_IOC), |
917 | !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI), |
918 | !!(trb->ctrl & DWC3_TRB_CTRL_CSP), |
919 | !!(trb->ctrl & DWC3_TRB_CTRL_CHN), |
920 | !!(trb->ctrl & DWC3_TRB_CTRL_LST), |
921 | !!(trb->ctrl & DWC3_TRB_CTRL_HWO), |
922 | dep->trb_enqueue == i ? 'E' : ' ', |
923 | dep->trb_dequeue == i ? 'D' : ' '); |
924 | } |
925 | |
926 | out: |
927 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
928 | |
929 | pm_runtime_put_sync(dev: dwc->dev); |
930 | |
931 | return 0; |
932 | } |
933 | |
934 | static int dwc3_ep_info_register_show(struct seq_file *s, void *unused) |
935 | { |
936 | struct dwc3_ep *dep = s->private; |
937 | struct dwc3 *dwc = dep->dwc; |
938 | unsigned long flags; |
939 | u64 ep_info; |
940 | u32 lower_32_bits; |
941 | u32 upper_32_bits; |
942 | u32 reg; |
943 | int ret; |
944 | |
945 | ret = pm_runtime_resume_and_get(dev: dwc->dev); |
946 | if (ret < 0) |
947 | return ret; |
948 | |
949 | spin_lock_irqsave(&dwc->lock, flags); |
950 | reg = DWC3_GDBGLSPMUX_EPSELECT(dep->number); |
951 | dwc3_writel(base: dwc->regs, DWC3_GDBGLSPMUX, value: reg); |
952 | |
953 | lower_32_bits = dwc3_readl(base: dwc->regs, DWC3_GDBGEPINFO0); |
954 | upper_32_bits = dwc3_readl(base: dwc->regs, DWC3_GDBGEPINFO1); |
955 | |
956 | ep_info = ((u64)upper_32_bits << 32) | lower_32_bits; |
957 | seq_printf(m: s, fmt: "0x%016llx\n" , ep_info); |
958 | spin_unlock_irqrestore(lock: &dwc->lock, flags); |
959 | |
960 | pm_runtime_put_sync(dev: dwc->dev); |
961 | |
962 | return 0; |
963 | } |
964 | |
965 | DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_size); |
966 | DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_size); |
967 | DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue); |
968 | DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue); |
969 | DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue); |
970 | DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue); |
971 | DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue); |
972 | DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type); |
973 | DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring); |
974 | DEFINE_SHOW_ATTRIBUTE(dwc3_ep_info_register); |
975 | |
976 | static const struct dwc3_ep_file_map dwc3_ep_file_map[] = { |
977 | { "tx_fifo_size" , &dwc3_tx_fifo_size_fops, }, |
978 | { "rx_fifo_size" , &dwc3_rx_fifo_size_fops, }, |
979 | { "tx_request_queue" , &dwc3_tx_request_queue_fops, }, |
980 | { "rx_request_queue" , &dwc3_rx_request_queue_fops, }, |
981 | { "rx_info_queue" , &dwc3_rx_info_queue_fops, }, |
982 | { "descriptor_fetch_queue" , &dwc3_descriptor_fetch_queue_fops, }, |
983 | { "event_queue" , &dwc3_event_queue_fops, }, |
984 | { "transfer_type" , &dwc3_transfer_type_fops, }, |
985 | { "trb_ring" , &dwc3_trb_ring_fops, }, |
986 | { "GDBGEPINFO" , &dwc3_ep_info_register_fops, }, |
987 | }; |
988 | |
989 | void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep) |
990 | { |
991 | struct dentry *dir; |
992 | int i; |
993 | |
994 | dir = debugfs_create_dir(name: dep->name, parent: dep->dwc->debug_root); |
995 | for (i = 0; i < ARRAY_SIZE(dwc3_ep_file_map); i++) { |
996 | const struct file_operations *fops = dwc3_ep_file_map[i].fops; |
997 | const char *name = dwc3_ep_file_map[i].name; |
998 | |
999 | debugfs_create_file(name, mode: 0444, parent: dir, data: dep, fops); |
1000 | } |
1001 | } |
1002 | |
1003 | void dwc3_debugfs_remove_endpoint_dir(struct dwc3_ep *dep) |
1004 | { |
1005 | debugfs_lookup_and_remove(name: dep->name, parent: dep->dwc->debug_root); |
1006 | } |
1007 | |
1008 | void dwc3_debugfs_init(struct dwc3 *dwc) |
1009 | { |
1010 | struct dentry *root; |
1011 | |
1012 | dwc->regset = kzalloc(size: sizeof(*dwc->regset), GFP_KERNEL); |
1013 | if (!dwc->regset) |
1014 | return; |
1015 | |
1016 | dwc->dbg_lsp_select = DWC3_LSP_MUX_UNSELECTED; |
1017 | |
1018 | dwc->regset->regs = dwc3_regs; |
1019 | dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); |
1020 | dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START; |
1021 | dwc->regset->dev = dwc->dev; |
1022 | |
1023 | root = debugfs_create_dir(name: dev_name(dev: dwc->dev), parent: usb_debug_root); |
1024 | dwc->debug_root = root; |
1025 | debugfs_create_regset32(name: "regdump" , mode: 0444, parent: root, regset: dwc->regset); |
1026 | debugfs_create_file(name: "lsp_dump" , mode: 0644, parent: root, data: dwc, fops: &dwc3_lsp_fops); |
1027 | |
1028 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) |
1029 | debugfs_create_file(name: "mode" , mode: 0644, parent: root, data: dwc, |
1030 | fops: &dwc3_mode_fops); |
1031 | |
1032 | if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) || |
1033 | IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { |
1034 | debugfs_create_file(name: "testmode" , mode: 0644, parent: root, data: dwc, |
1035 | fops: &dwc3_testmode_fops); |
1036 | debugfs_create_file(name: "link_state" , mode: 0644, parent: root, data: dwc, |
1037 | fops: &dwc3_link_state_fops); |
1038 | } |
1039 | } |
1040 | |
1041 | void dwc3_debugfs_exit(struct dwc3 *dwc) |
1042 | { |
1043 | debugfs_lookup_and_remove(name: dev_name(dev: dwc->dev), parent: usb_debug_root); |
1044 | kfree(objp: dwc->regset); |
1045 | } |
1046 | |