Commit | Line | Data |
---|---|---|
23d3e7a6 MF |
1 | /* |
2 | * Copyright (c) 2009 by Martin Fuzzey | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation; either version 2 of the License, or (at your | |
7 | * option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 | * for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software Foundation, | |
16 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | */ | |
18 | ||
19 | /* this file is part of imx21-hcd.c */ | |
20 | ||
21 | #ifndef DEBUG | |
22 | ||
23 | static inline void create_debug_files(struct imx21 *imx21) { } | |
24 | static inline void remove_debug_files(struct imx21 *imx21) { } | |
25 | static inline void debug_urb_submitted(struct imx21 *imx21, struct urb *urb) {} | |
26 | static inline void debug_urb_completed(struct imx21 *imx21, struct urb *urb, | |
27 | int status) {} | |
28 | static inline void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb) {} | |
29 | static inline void debug_urb_queued_for_etd(struct imx21 *imx21, | |
30 | struct urb *urb) {} | |
31 | static inline void debug_urb_queued_for_dmem(struct imx21 *imx21, | |
32 | struct urb *urb) {} | |
33 | static inline void debug_etd_allocated(struct imx21 *imx21) {} | |
34 | static inline void debug_etd_freed(struct imx21 *imx21) {} | |
35 | static inline void debug_dmem_allocated(struct imx21 *imx21, int size) {} | |
36 | static inline void debug_dmem_freed(struct imx21 *imx21, int size) {} | |
37 | static inline void debug_isoc_submitted(struct imx21 *imx21, | |
38 | int frame, struct td *td) {} | |
39 | static inline void debug_isoc_completed(struct imx21 *imx21, | |
40 | int frame, struct td *td, int cc, int len) {} | |
41 | ||
42 | #else | |
43 | ||
44 | #include <linux/debugfs.h> | |
45 | #include <linux/seq_file.h> | |
46 | ||
47 | static const char *dir_labels[] = { | |
48 | "TD 0", | |
49 | "OUT", | |
50 | "IN", | |
51 | "TD 1" | |
52 | }; | |
53 | ||
54 | static const char *speed_labels[] = { | |
55 | "Full", | |
56 | "Low" | |
57 | }; | |
58 | ||
59 | static const char *format_labels[] = { | |
60 | "Control", | |
61 | "ISO", | |
62 | "Bulk", | |
63 | "Interrupt" | |
64 | }; | |
65 | ||
66 | static inline struct debug_stats *stats_for_urb(struct imx21 *imx21, | |
67 | struct urb *urb) | |
68 | { | |
69 | return usb_pipeisoc(urb->pipe) ? | |
70 | &imx21->isoc_stats : &imx21->nonisoc_stats; | |
71 | } | |
72 | ||
73 | static void debug_urb_submitted(struct imx21 *imx21, struct urb *urb) | |
74 | { | |
75 | stats_for_urb(imx21, urb)->submitted++; | |
76 | } | |
77 | ||
78 | static void debug_urb_completed(struct imx21 *imx21, struct urb *urb, int st) | |
79 | { | |
80 | if (st) | |
81 | stats_for_urb(imx21, urb)->completed_failed++; | |
82 | else | |
83 | stats_for_urb(imx21, urb)->completed_ok++; | |
84 | } | |
85 | ||
86 | static void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb) | |
87 | { | |
88 | stats_for_urb(imx21, urb)->unlinked++; | |
89 | } | |
90 | ||
91 | static void debug_urb_queued_for_etd(struct imx21 *imx21, struct urb *urb) | |
92 | { | |
93 | stats_for_urb(imx21, urb)->queue_etd++; | |
94 | } | |
95 | ||
96 | static void debug_urb_queued_for_dmem(struct imx21 *imx21, struct urb *urb) | |
97 | { | |
98 | stats_for_urb(imx21, urb)->queue_dmem++; | |
99 | } | |
100 | ||
101 | static inline void debug_etd_allocated(struct imx21 *imx21) | |
102 | { | |
103 | imx21->etd_usage.maximum = max( | |
104 | ++(imx21->etd_usage.value), | |
105 | imx21->etd_usage.maximum); | |
106 | } | |
107 | ||
108 | static inline void debug_etd_freed(struct imx21 *imx21) | |
109 | { | |
110 | imx21->etd_usage.value--; | |
111 | } | |
112 | ||
113 | static inline void debug_dmem_allocated(struct imx21 *imx21, int size) | |
114 | { | |
115 | imx21->dmem_usage.value += size; | |
116 | imx21->dmem_usage.maximum = max( | |
117 | imx21->dmem_usage.value, | |
118 | imx21->dmem_usage.maximum); | |
119 | } | |
120 | ||
121 | static inline void debug_dmem_freed(struct imx21 *imx21, int size) | |
122 | { | |
123 | imx21->dmem_usage.value -= size; | |
124 | } | |
125 | ||
126 | ||
127 | static void debug_isoc_submitted(struct imx21 *imx21, | |
128 | int frame, struct td *td) | |
129 | { | |
130 | struct debug_isoc_trace *trace = &imx21->isoc_trace[ | |
131 | imx21->isoc_trace_index++]; | |
132 | ||
133 | imx21->isoc_trace_index %= ARRAY_SIZE(imx21->isoc_trace); | |
134 | trace->schedule_frame = td->frame; | |
135 | trace->submit_frame = frame; | |
136 | trace->request_len = td->len; | |
137 | trace->td = td; | |
138 | } | |
139 | ||
140 | static inline void debug_isoc_completed(struct imx21 *imx21, | |
141 | int frame, struct td *td, int cc, int len) | |
142 | { | |
143 | struct debug_isoc_trace *trace, *trace_failed; | |
144 | int i; | |
145 | int found = 0; | |
146 | ||
147 | trace = imx21->isoc_trace; | |
148 | for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++) { | |
149 | if (trace->td == td) { | |
150 | trace->done_frame = frame; | |
151 | trace->done_len = len; | |
152 | trace->cc = cc; | |
153 | trace->td = NULL; | |
154 | found = 1; | |
155 | break; | |
156 | } | |
157 | } | |
158 | ||
159 | if (found && cc) { | |
160 | trace_failed = &imx21->isoc_trace_failed[ | |
161 | imx21->isoc_trace_index_failed++]; | |
162 | ||
163 | imx21->isoc_trace_index_failed %= ARRAY_SIZE( | |
164 | imx21->isoc_trace_failed); | |
165 | *trace_failed = *trace; | |
166 | } | |
167 | } | |
168 | ||
169 | ||
170 | static char *format_ep(struct usb_host_endpoint *ep, char *buf, int bufsize) | |
171 | { | |
172 | if (ep) | |
173 | snprintf(buf, bufsize, "ep_%02x (type:%02X kaddr:%p)", | |
174 | ep->desc.bEndpointAddress, | |
175 | usb_endpoint_type(&ep->desc), | |
176 | ep); | |
177 | else | |
178 | snprintf(buf, bufsize, "none"); | |
179 | return buf; | |
180 | } | |
181 | ||
182 | static char *format_etd_dword0(u32 value, char *buf, int bufsize) | |
183 | { | |
184 | snprintf(buf, bufsize, | |
185 | "addr=%d ep=%d dir=%s speed=%s format=%s halted=%d", | |
186 | value & 0x7F, | |
187 | (value >> DW0_ENDPNT) & 0x0F, | |
188 | dir_labels[(value >> DW0_DIRECT) & 0x03], | |
189 | speed_labels[(value >> DW0_SPEED) & 0x01], | |
190 | format_labels[(value >> DW0_FORMAT) & 0x03], | |
191 | (value >> DW0_HALTED) & 0x01); | |
192 | return buf; | |
193 | } | |
194 | ||
195 | static int debug_status_show(struct seq_file *s, void *v) | |
196 | { | |
197 | struct imx21 *imx21 = s->private; | |
198 | int etds_allocated = 0; | |
199 | int etds_sw_busy = 0; | |
200 | int etds_hw_busy = 0; | |
201 | int dmem_blocks = 0; | |
202 | int queued_for_etd = 0; | |
203 | int queued_for_dmem = 0; | |
204 | unsigned int dmem_bytes = 0; | |
205 | int i; | |
206 | struct etd_priv *etd; | |
207 | u32 etd_enable_mask; | |
208 | unsigned long flags; | |
209 | struct imx21_dmem_area *dmem; | |
210 | struct ep_priv *ep_priv; | |
211 | ||
212 | spin_lock_irqsave(&imx21->lock, flags); | |
213 | ||
214 | etd_enable_mask = readl(imx21->regs + USBH_ETDENSET); | |
215 | for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) { | |
216 | if (etd->alloc) | |
217 | etds_allocated++; | |
218 | if (etd->urb) | |
219 | etds_sw_busy++; | |
220 | if (etd_enable_mask & (1<<i)) | |
221 | etds_hw_busy++; | |
222 | } | |
223 | ||
224 | list_for_each_entry(dmem, &imx21->dmem_list, list) { | |
225 | dmem_bytes += dmem->size; | |
226 | dmem_blocks++; | |
227 | } | |
228 | ||
229 | list_for_each_entry(ep_priv, &imx21->queue_for_etd, queue) | |
230 | queued_for_etd++; | |
231 | ||
232 | list_for_each_entry(etd, &imx21->queue_for_dmem, queue) | |
233 | queued_for_dmem++; | |
234 | ||
235 | spin_unlock_irqrestore(&imx21->lock, flags); | |
236 | ||
237 | seq_printf(s, | |
238 | "Frame: %d\n" | |
239 | "ETDs allocated: %d/%d (max=%d)\n" | |
240 | "ETDs in use sw: %d\n" | |
241 | "ETDs in use hw: %d\n" | |
5ee71cf3 | 242 | "DMEM allocated: %d/%d (max=%d)\n" |
23d3e7a6 MF |
243 | "DMEM blocks: %d\n" |
244 | "Queued waiting for ETD: %d\n" | |
245 | "Queued waiting for DMEM: %d\n", | |
246 | readl(imx21->regs + USBH_FRMNUB) & 0xFFFF, | |
247 | etds_allocated, USB_NUM_ETD, imx21->etd_usage.maximum, | |
248 | etds_sw_busy, | |
249 | etds_hw_busy, | |
250 | dmem_bytes, DMEM_SIZE, imx21->dmem_usage.maximum, | |
251 | dmem_blocks, | |
252 | queued_for_etd, | |
253 | queued_for_dmem); | |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
258 | static int debug_dmem_show(struct seq_file *s, void *v) | |
259 | { | |
260 | struct imx21 *imx21 = s->private; | |
261 | struct imx21_dmem_area *dmem; | |
262 | unsigned long flags; | |
263 | char ep_text[40]; | |
264 | ||
265 | spin_lock_irqsave(&imx21->lock, flags); | |
266 | ||
267 | list_for_each_entry(dmem, &imx21->dmem_list, list) | |
268 | seq_printf(s, | |
269 | "%04X: size=0x%X " | |
270 | "ep=%s\n", | |
271 | dmem->offset, dmem->size, | |
272 | format_ep(dmem->ep, ep_text, sizeof(ep_text))); | |
273 | ||
274 | spin_unlock_irqrestore(&imx21->lock, flags); | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | static int debug_etd_show(struct seq_file *s, void *v) | |
280 | { | |
281 | struct imx21 *imx21 = s->private; | |
282 | struct etd_priv *etd; | |
283 | char buf[60]; | |
284 | u32 dword; | |
285 | int i, j; | |
286 | unsigned long flags; | |
287 | ||
288 | spin_lock_irqsave(&imx21->lock, flags); | |
289 | ||
290 | for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) { | |
291 | int state = -1; | |
292 | struct urb_priv *urb_priv; | |
293 | if (etd->urb) { | |
294 | urb_priv = etd->urb->hcpriv; | |
295 | if (urb_priv) | |
296 | state = urb_priv->state; | |
297 | } | |
298 | ||
299 | seq_printf(s, | |
300 | "etd_num: %d\n" | |
301 | "ep: %s\n" | |
302 | "alloc: %d\n" | |
303 | "len: %d\n" | |
304 | "busy sw: %d\n" | |
305 | "busy hw: %d\n" | |
306 | "urb state: %d\n" | |
307 | "current urb: %p\n", | |
308 | ||
309 | i, | |
310 | format_ep(etd->ep, buf, sizeof(buf)), | |
311 | etd->alloc, | |
312 | etd->len, | |
313 | etd->urb != NULL, | |
314 | (readl(imx21->regs + USBH_ETDENSET) & (1 << i)) > 0, | |
315 | state, | |
316 | etd->urb); | |
317 | ||
318 | for (j = 0; j < 4; j++) { | |
319 | dword = etd_readl(imx21, i, j); | |
320 | switch (j) { | |
321 | case 0: | |
322 | format_etd_dword0(dword, buf, sizeof(buf)); | |
323 | break; | |
324 | case 2: | |
325 | snprintf(buf, sizeof(buf), | |
326 | "cc=0X%02X", dword >> DW2_COMPCODE); | |
327 | break; | |
328 | default: | |
329 | *buf = 0; | |
330 | break; | |
331 | } | |
332 | seq_printf(s, | |
333 | "dword %d: submitted=%08X cur=%08X [%s]\n", | |
334 | j, | |
335 | etd->submitted_dwords[j], | |
336 | dword, | |
337 | buf); | |
338 | } | |
339 | seq_printf(s, "\n"); | |
340 | } | |
341 | ||
342 | spin_unlock_irqrestore(&imx21->lock, flags); | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | static void debug_statistics_show_one(struct seq_file *s, | |
348 | const char *name, struct debug_stats *stats) | |
349 | { | |
350 | seq_printf(s, "%s:\n" | |
351 | "submitted URBs: %lu\n" | |
352 | "completed OK: %lu\n" | |
353 | "completed failed: %lu\n" | |
354 | "unlinked: %lu\n" | |
355 | "queued for ETD: %lu\n" | |
356 | "queued for DMEM: %lu\n\n", | |
357 | name, | |
358 | stats->submitted, | |
359 | stats->completed_ok, | |
360 | stats->completed_failed, | |
361 | stats->unlinked, | |
362 | stats->queue_etd, | |
363 | stats->queue_dmem); | |
364 | } | |
365 | ||
366 | static int debug_statistics_show(struct seq_file *s, void *v) | |
367 | { | |
368 | struct imx21 *imx21 = s->private; | |
369 | unsigned long flags; | |
370 | ||
371 | spin_lock_irqsave(&imx21->lock, flags); | |
372 | ||
373 | debug_statistics_show_one(s, "nonisoc", &imx21->nonisoc_stats); | |
374 | debug_statistics_show_one(s, "isoc", &imx21->isoc_stats); | |
375 | seq_printf(s, "unblock kludge triggers: %lu\n", imx21->debug_unblocks); | |
376 | spin_unlock_irqrestore(&imx21->lock, flags); | |
377 | ||
378 | return 0; | |
379 | } | |
380 | ||
381 | static void debug_isoc_show_one(struct seq_file *s, | |
382 | const char *name, int index, struct debug_isoc_trace *trace) | |
383 | { | |
384 | seq_printf(s, "%s %d:\n" | |
385 | "cc=0X%02X\n" | |
386 | "scheduled frame %d (%d)\n" | |
70f23fd6 | 387 | "submitted frame %d (%d)\n" |
23d3e7a6 MF |
388 | "completed frame %d (%d)\n" |
389 | "requested length=%d\n" | |
390 | "completed length=%d\n\n", | |
391 | name, index, | |
392 | trace->cc, | |
393 | trace->schedule_frame, trace->schedule_frame & 0xFFFF, | |
394 | trace->submit_frame, trace->submit_frame & 0xFFFF, | |
395 | trace->done_frame, trace->done_frame & 0xFFFF, | |
396 | trace->request_len, | |
397 | trace->done_len); | |
398 | } | |
399 | ||
400 | static int debug_isoc_show(struct seq_file *s, void *v) | |
401 | { | |
402 | struct imx21 *imx21 = s->private; | |
403 | struct debug_isoc_trace *trace; | |
404 | unsigned long flags; | |
405 | int i; | |
406 | ||
407 | spin_lock_irqsave(&imx21->lock, flags); | |
408 | ||
409 | trace = imx21->isoc_trace_failed; | |
410 | for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace_failed); i++, trace++) | |
411 | debug_isoc_show_one(s, "isoc failed", i, trace); | |
412 | ||
413 | trace = imx21->isoc_trace; | |
414 | for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++) | |
415 | debug_isoc_show_one(s, "isoc", i, trace); | |
416 | ||
417 | spin_unlock_irqrestore(&imx21->lock, flags); | |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
422 | static int debug_status_open(struct inode *inode, struct file *file) | |
423 | { | |
424 | return single_open(file, debug_status_show, inode->i_private); | |
425 | } | |
426 | ||
427 | static int debug_dmem_open(struct inode *inode, struct file *file) | |
428 | { | |
429 | return single_open(file, debug_dmem_show, inode->i_private); | |
430 | } | |
431 | ||
432 | static int debug_etd_open(struct inode *inode, struct file *file) | |
433 | { | |
434 | return single_open(file, debug_etd_show, inode->i_private); | |
435 | } | |
436 | ||
437 | static int debug_statistics_open(struct inode *inode, struct file *file) | |
438 | { | |
439 | return single_open(file, debug_statistics_show, inode->i_private); | |
440 | } | |
441 | ||
442 | static int debug_isoc_open(struct inode *inode, struct file *file) | |
443 | { | |
444 | return single_open(file, debug_isoc_show, inode->i_private); | |
445 | } | |
446 | ||
447 | static const struct file_operations debug_status_fops = { | |
448 | .open = debug_status_open, | |
449 | .read = seq_read, | |
450 | .llseek = seq_lseek, | |
451 | .release = single_release, | |
452 | }; | |
453 | ||
454 | static const struct file_operations debug_dmem_fops = { | |
455 | .open = debug_dmem_open, | |
456 | .read = seq_read, | |
457 | .llseek = seq_lseek, | |
458 | .release = single_release, | |
459 | }; | |
460 | ||
461 | static const struct file_operations debug_etd_fops = { | |
462 | .open = debug_etd_open, | |
463 | .read = seq_read, | |
464 | .llseek = seq_lseek, | |
465 | .release = single_release, | |
466 | }; | |
467 | ||
468 | static const struct file_operations debug_statistics_fops = { | |
469 | .open = debug_statistics_open, | |
470 | .read = seq_read, | |
471 | .llseek = seq_lseek, | |
472 | .release = single_release, | |
473 | }; | |
474 | ||
475 | static const struct file_operations debug_isoc_fops = { | |
476 | .open = debug_isoc_open, | |
477 | .read = seq_read, | |
478 | .llseek = seq_lseek, | |
479 | .release = single_release, | |
480 | }; | |
481 | ||
482 | static void create_debug_files(struct imx21 *imx21) | |
483 | { | |
484 | imx21->debug_root = debugfs_create_dir(dev_name(imx21->dev), NULL); | |
485 | if (!imx21->debug_root) | |
486 | goto failed_create_rootdir; | |
487 | ||
488 | if (!debugfs_create_file("status", S_IRUGO, | |
489 | imx21->debug_root, imx21, &debug_status_fops)) | |
490 | goto failed_create; | |
491 | ||
492 | if (!debugfs_create_file("dmem", S_IRUGO, | |
493 | imx21->debug_root, imx21, &debug_dmem_fops)) | |
494 | goto failed_create; | |
495 | ||
496 | if (!debugfs_create_file("etd", S_IRUGO, | |
497 | imx21->debug_root, imx21, &debug_etd_fops)) | |
498 | goto failed_create; | |
499 | ||
500 | if (!debugfs_create_file("statistics", S_IRUGO, | |
501 | imx21->debug_root, imx21, &debug_statistics_fops)) | |
502 | goto failed_create; | |
503 | ||
504 | if (!debugfs_create_file("isoc", S_IRUGO, | |
505 | imx21->debug_root, imx21, &debug_isoc_fops)) | |
506 | goto failed_create; | |
507 | ||
508 | return; | |
509 | ||
510 | failed_create: | |
511 | debugfs_remove_recursive(imx21->debug_root); | |
512 | ||
513 | failed_create_rootdir: | |
514 | imx21->debug_root = NULL; | |
515 | } | |
516 | ||
517 | ||
518 | static void remove_debug_files(struct imx21 *imx21) | |
519 | { | |
520 | if (imx21->debug_root) { | |
521 | debugfs_remove_recursive(imx21->debug_root); | |
522 | imx21->debug_root = NULL; | |
523 | } | |
524 | } | |
525 | ||
526 | #endif | |
527 |