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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 | ||
1c20163d ON |
21 | #ifdef CONFIG_DYNAMIC_DEBUG |
22 | #define DEBUG | |
23 | #endif | |
24 | ||
23d3e7a6 MF |
25 | #ifndef DEBUG |
26 | ||
27 | static inline void create_debug_files(struct imx21 *imx21) { } | |
28 | static inline void remove_debug_files(struct imx21 *imx21) { } | |
29 | static inline void debug_urb_submitted(struct imx21 *imx21, struct urb *urb) {} | |
30 | static inline void debug_urb_completed(struct imx21 *imx21, struct urb *urb, | |
31 | int status) {} | |
32 | static inline void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb) {} | |
33 | static inline void debug_urb_queued_for_etd(struct imx21 *imx21, | |
34 | struct urb *urb) {} | |
35 | static inline void debug_urb_queued_for_dmem(struct imx21 *imx21, | |
36 | struct urb *urb) {} | |
37 | static inline void debug_etd_allocated(struct imx21 *imx21) {} | |
38 | static inline void debug_etd_freed(struct imx21 *imx21) {} | |
39 | static inline void debug_dmem_allocated(struct imx21 *imx21, int size) {} | |
40 | static inline void debug_dmem_freed(struct imx21 *imx21, int size) {} | |
41 | static inline void debug_isoc_submitted(struct imx21 *imx21, | |
42 | int frame, struct td *td) {} | |
43 | static inline void debug_isoc_completed(struct imx21 *imx21, | |
44 | int frame, struct td *td, int cc, int len) {} | |
45 | ||
46 | #else | |
47 | ||
48 | #include <linux/debugfs.h> | |
49 | #include <linux/seq_file.h> | |
50 | ||
51 | static const char *dir_labels[] = { | |
52 | "TD 0", | |
53 | "OUT", | |
54 | "IN", | |
55 | "TD 1" | |
56 | }; | |
57 | ||
58 | static const char *speed_labels[] = { | |
59 | "Full", | |
60 | "Low" | |
61 | }; | |
62 | ||
63 | static const char *format_labels[] = { | |
64 | "Control", | |
65 | "ISO", | |
66 | "Bulk", | |
67 | "Interrupt" | |
68 | }; | |
69 | ||
70 | static inline struct debug_stats *stats_for_urb(struct imx21 *imx21, | |
71 | struct urb *urb) | |
72 | { | |
73 | return usb_pipeisoc(urb->pipe) ? | |
74 | &imx21->isoc_stats : &imx21->nonisoc_stats; | |
75 | } | |
76 | ||
77 | static void debug_urb_submitted(struct imx21 *imx21, struct urb *urb) | |
78 | { | |
79 | stats_for_urb(imx21, urb)->submitted++; | |
80 | } | |
81 | ||
82 | static void debug_urb_completed(struct imx21 *imx21, struct urb *urb, int st) | |
83 | { | |
84 | if (st) | |
85 | stats_for_urb(imx21, urb)->completed_failed++; | |
86 | else | |
87 | stats_for_urb(imx21, urb)->completed_ok++; | |
88 | } | |
89 | ||
90 | static void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb) | |
91 | { | |
92 | stats_for_urb(imx21, urb)->unlinked++; | |
93 | } | |
94 | ||
95 | static void debug_urb_queued_for_etd(struct imx21 *imx21, struct urb *urb) | |
96 | { | |
97 | stats_for_urb(imx21, urb)->queue_etd++; | |
98 | } | |
99 | ||
100 | static void debug_urb_queued_for_dmem(struct imx21 *imx21, struct urb *urb) | |
101 | { | |
102 | stats_for_urb(imx21, urb)->queue_dmem++; | |
103 | } | |
104 | ||
105 | static inline void debug_etd_allocated(struct imx21 *imx21) | |
106 | { | |
107 | imx21->etd_usage.maximum = max( | |
108 | ++(imx21->etd_usage.value), | |
109 | imx21->etd_usage.maximum); | |
110 | } | |
111 | ||
112 | static inline void debug_etd_freed(struct imx21 *imx21) | |
113 | { | |
114 | imx21->etd_usage.value--; | |
115 | } | |
116 | ||
117 | static inline void debug_dmem_allocated(struct imx21 *imx21, int size) | |
118 | { | |
119 | imx21->dmem_usage.value += size; | |
120 | imx21->dmem_usage.maximum = max( | |
121 | imx21->dmem_usage.value, | |
122 | imx21->dmem_usage.maximum); | |
123 | } | |
124 | ||
125 | static inline void debug_dmem_freed(struct imx21 *imx21, int size) | |
126 | { | |
127 | imx21->dmem_usage.value -= size; | |
128 | } | |
129 | ||
130 | ||
131 | static void debug_isoc_submitted(struct imx21 *imx21, | |
132 | int frame, struct td *td) | |
133 | { | |
134 | struct debug_isoc_trace *trace = &imx21->isoc_trace[ | |
135 | imx21->isoc_trace_index++]; | |
136 | ||
137 | imx21->isoc_trace_index %= ARRAY_SIZE(imx21->isoc_trace); | |
138 | trace->schedule_frame = td->frame; | |
139 | trace->submit_frame = frame; | |
140 | trace->request_len = td->len; | |
141 | trace->td = td; | |
142 | } | |
143 | ||
144 | static inline void debug_isoc_completed(struct imx21 *imx21, | |
145 | int frame, struct td *td, int cc, int len) | |
146 | { | |
147 | struct debug_isoc_trace *trace, *trace_failed; | |
148 | int i; | |
149 | int found = 0; | |
150 | ||
151 | trace = imx21->isoc_trace; | |
152 | for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++) { | |
153 | if (trace->td == td) { | |
154 | trace->done_frame = frame; | |
155 | trace->done_len = len; | |
156 | trace->cc = cc; | |
157 | trace->td = NULL; | |
158 | found = 1; | |
159 | break; | |
160 | } | |
161 | } | |
162 | ||
163 | if (found && cc) { | |
164 | trace_failed = &imx21->isoc_trace_failed[ | |
165 | imx21->isoc_trace_index_failed++]; | |
166 | ||
167 | imx21->isoc_trace_index_failed %= ARRAY_SIZE( | |
168 | imx21->isoc_trace_failed); | |
169 | *trace_failed = *trace; | |
170 | } | |
171 | } | |
172 | ||
173 | ||
174 | static char *format_ep(struct usb_host_endpoint *ep, char *buf, int bufsize) | |
175 | { | |
176 | if (ep) | |
177 | snprintf(buf, bufsize, "ep_%02x (type:%02X kaddr:%p)", | |
178 | ep->desc.bEndpointAddress, | |
179 | usb_endpoint_type(&ep->desc), | |
180 | ep); | |
181 | else | |
182 | snprintf(buf, bufsize, "none"); | |
183 | return buf; | |
184 | } | |
185 | ||
186 | static char *format_etd_dword0(u32 value, char *buf, int bufsize) | |
187 | { | |
188 | snprintf(buf, bufsize, | |
189 | "addr=%d ep=%d dir=%s speed=%s format=%s halted=%d", | |
190 | value & 0x7F, | |
191 | (value >> DW0_ENDPNT) & 0x0F, | |
192 | dir_labels[(value >> DW0_DIRECT) & 0x03], | |
193 | speed_labels[(value >> DW0_SPEED) & 0x01], | |
194 | format_labels[(value >> DW0_FORMAT) & 0x03], | |
195 | (value >> DW0_HALTED) & 0x01); | |
196 | return buf; | |
197 | } | |
198 | ||
199 | static int debug_status_show(struct seq_file *s, void *v) | |
200 | { | |
201 | struct imx21 *imx21 = s->private; | |
202 | int etds_allocated = 0; | |
203 | int etds_sw_busy = 0; | |
204 | int etds_hw_busy = 0; | |
205 | int dmem_blocks = 0; | |
206 | int queued_for_etd = 0; | |
207 | int queued_for_dmem = 0; | |
208 | unsigned int dmem_bytes = 0; | |
209 | int i; | |
210 | struct etd_priv *etd; | |
211 | u32 etd_enable_mask; | |
212 | unsigned long flags; | |
213 | struct imx21_dmem_area *dmem; | |
214 | struct ep_priv *ep_priv; | |
215 | ||
216 | spin_lock_irqsave(&imx21->lock, flags); | |
217 | ||
218 | etd_enable_mask = readl(imx21->regs + USBH_ETDENSET); | |
219 | for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) { | |
220 | if (etd->alloc) | |
221 | etds_allocated++; | |
222 | if (etd->urb) | |
223 | etds_sw_busy++; | |
224 | if (etd_enable_mask & (1<<i)) | |
225 | etds_hw_busy++; | |
226 | } | |
227 | ||
228 | list_for_each_entry(dmem, &imx21->dmem_list, list) { | |
229 | dmem_bytes += dmem->size; | |
230 | dmem_blocks++; | |
231 | } | |
232 | ||
233 | list_for_each_entry(ep_priv, &imx21->queue_for_etd, queue) | |
234 | queued_for_etd++; | |
235 | ||
236 | list_for_each_entry(etd, &imx21->queue_for_dmem, queue) | |
237 | queued_for_dmem++; | |
238 | ||
239 | spin_unlock_irqrestore(&imx21->lock, flags); | |
240 | ||
241 | seq_printf(s, | |
242 | "Frame: %d\n" | |
243 | "ETDs allocated: %d/%d (max=%d)\n" | |
244 | "ETDs in use sw: %d\n" | |
245 | "ETDs in use hw: %d\n" | |
5ee71cf3 | 246 | "DMEM allocated: %d/%d (max=%d)\n" |
23d3e7a6 MF |
247 | "DMEM blocks: %d\n" |
248 | "Queued waiting for ETD: %d\n" | |
249 | "Queued waiting for DMEM: %d\n", | |
250 | readl(imx21->regs + USBH_FRMNUB) & 0xFFFF, | |
251 | etds_allocated, USB_NUM_ETD, imx21->etd_usage.maximum, | |
252 | etds_sw_busy, | |
253 | etds_hw_busy, | |
254 | dmem_bytes, DMEM_SIZE, imx21->dmem_usage.maximum, | |
255 | dmem_blocks, | |
256 | queued_for_etd, | |
257 | queued_for_dmem); | |
258 | ||
259 | return 0; | |
260 | } | |
261 | ||
262 | static int debug_dmem_show(struct seq_file *s, void *v) | |
263 | { | |
264 | struct imx21 *imx21 = s->private; | |
265 | struct imx21_dmem_area *dmem; | |
266 | unsigned long flags; | |
267 | char ep_text[40]; | |
268 | ||
269 | spin_lock_irqsave(&imx21->lock, flags); | |
270 | ||
271 | list_for_each_entry(dmem, &imx21->dmem_list, list) | |
272 | seq_printf(s, | |
273 | "%04X: size=0x%X " | |
274 | "ep=%s\n", | |
275 | dmem->offset, dmem->size, | |
276 | format_ep(dmem->ep, ep_text, sizeof(ep_text))); | |
277 | ||
278 | spin_unlock_irqrestore(&imx21->lock, flags); | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
283 | static int debug_etd_show(struct seq_file *s, void *v) | |
284 | { | |
285 | struct imx21 *imx21 = s->private; | |
286 | struct etd_priv *etd; | |
287 | char buf[60]; | |
288 | u32 dword; | |
289 | int i, j; | |
290 | unsigned long flags; | |
291 | ||
292 | spin_lock_irqsave(&imx21->lock, flags); | |
293 | ||
294 | for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) { | |
295 | int state = -1; | |
296 | struct urb_priv *urb_priv; | |
297 | if (etd->urb) { | |
298 | urb_priv = etd->urb->hcpriv; | |
299 | if (urb_priv) | |
300 | state = urb_priv->state; | |
301 | } | |
302 | ||
303 | seq_printf(s, | |
304 | "etd_num: %d\n" | |
305 | "ep: %s\n" | |
306 | "alloc: %d\n" | |
307 | "len: %d\n" | |
308 | "busy sw: %d\n" | |
309 | "busy hw: %d\n" | |
310 | "urb state: %d\n" | |
311 | "current urb: %p\n", | |
312 | ||
313 | i, | |
314 | format_ep(etd->ep, buf, sizeof(buf)), | |
315 | etd->alloc, | |
316 | etd->len, | |
317 | etd->urb != NULL, | |
318 | (readl(imx21->regs + USBH_ETDENSET) & (1 << i)) > 0, | |
319 | state, | |
320 | etd->urb); | |
321 | ||
322 | for (j = 0; j < 4; j++) { | |
323 | dword = etd_readl(imx21, i, j); | |
324 | switch (j) { | |
325 | case 0: | |
326 | format_etd_dword0(dword, buf, sizeof(buf)); | |
327 | break; | |
328 | case 2: | |
329 | snprintf(buf, sizeof(buf), | |
330 | "cc=0X%02X", dword >> DW2_COMPCODE); | |
331 | break; | |
332 | default: | |
333 | *buf = 0; | |
334 | break; | |
335 | } | |
336 | seq_printf(s, | |
337 | "dword %d: submitted=%08X cur=%08X [%s]\n", | |
338 | j, | |
339 | etd->submitted_dwords[j], | |
340 | dword, | |
341 | buf); | |
342 | } | |
343 | seq_printf(s, "\n"); | |
344 | } | |
345 | ||
346 | spin_unlock_irqrestore(&imx21->lock, flags); | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | static void debug_statistics_show_one(struct seq_file *s, | |
352 | const char *name, struct debug_stats *stats) | |
353 | { | |
354 | seq_printf(s, "%s:\n" | |
355 | "submitted URBs: %lu\n" | |
356 | "completed OK: %lu\n" | |
357 | "completed failed: %lu\n" | |
358 | "unlinked: %lu\n" | |
359 | "queued for ETD: %lu\n" | |
360 | "queued for DMEM: %lu\n\n", | |
361 | name, | |
362 | stats->submitted, | |
363 | stats->completed_ok, | |
364 | stats->completed_failed, | |
365 | stats->unlinked, | |
366 | stats->queue_etd, | |
367 | stats->queue_dmem); | |
368 | } | |
369 | ||
370 | static int debug_statistics_show(struct seq_file *s, void *v) | |
371 | { | |
372 | struct imx21 *imx21 = s->private; | |
373 | unsigned long flags; | |
374 | ||
375 | spin_lock_irqsave(&imx21->lock, flags); | |
376 | ||
377 | debug_statistics_show_one(s, "nonisoc", &imx21->nonisoc_stats); | |
378 | debug_statistics_show_one(s, "isoc", &imx21->isoc_stats); | |
379 | seq_printf(s, "unblock kludge triggers: %lu\n", imx21->debug_unblocks); | |
380 | spin_unlock_irqrestore(&imx21->lock, flags); | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
385 | static void debug_isoc_show_one(struct seq_file *s, | |
386 | const char *name, int index, struct debug_isoc_trace *trace) | |
387 | { | |
388 | seq_printf(s, "%s %d:\n" | |
389 | "cc=0X%02X\n" | |
390 | "scheduled frame %d (%d)\n" | |
70f23fd6 | 391 | "submitted frame %d (%d)\n" |
23d3e7a6 MF |
392 | "completed frame %d (%d)\n" |
393 | "requested length=%d\n" | |
394 | "completed length=%d\n\n", | |
395 | name, index, | |
396 | trace->cc, | |
397 | trace->schedule_frame, trace->schedule_frame & 0xFFFF, | |
398 | trace->submit_frame, trace->submit_frame & 0xFFFF, | |
399 | trace->done_frame, trace->done_frame & 0xFFFF, | |
400 | trace->request_len, | |
401 | trace->done_len); | |
402 | } | |
403 | ||
404 | static int debug_isoc_show(struct seq_file *s, void *v) | |
405 | { | |
406 | struct imx21 *imx21 = s->private; | |
407 | struct debug_isoc_trace *trace; | |
408 | unsigned long flags; | |
409 | int i; | |
410 | ||
411 | spin_lock_irqsave(&imx21->lock, flags); | |
412 | ||
413 | trace = imx21->isoc_trace_failed; | |
414 | for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace_failed); i++, trace++) | |
415 | debug_isoc_show_one(s, "isoc failed", i, trace); | |
416 | ||
417 | trace = imx21->isoc_trace; | |
418 | for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++) | |
419 | debug_isoc_show_one(s, "isoc", i, trace); | |
420 | ||
421 | spin_unlock_irqrestore(&imx21->lock, flags); | |
422 | ||
423 | return 0; | |
424 | } | |
425 | ||
426 | static int debug_status_open(struct inode *inode, struct file *file) | |
427 | { | |
428 | return single_open(file, debug_status_show, inode->i_private); | |
429 | } | |
430 | ||
431 | static int debug_dmem_open(struct inode *inode, struct file *file) | |
432 | { | |
433 | return single_open(file, debug_dmem_show, inode->i_private); | |
434 | } | |
435 | ||
436 | static int debug_etd_open(struct inode *inode, struct file *file) | |
437 | { | |
438 | return single_open(file, debug_etd_show, inode->i_private); | |
439 | } | |
440 | ||
441 | static int debug_statistics_open(struct inode *inode, struct file *file) | |
442 | { | |
443 | return single_open(file, debug_statistics_show, inode->i_private); | |
444 | } | |
445 | ||
446 | static int debug_isoc_open(struct inode *inode, struct file *file) | |
447 | { | |
448 | return single_open(file, debug_isoc_show, inode->i_private); | |
449 | } | |
450 | ||
451 | static const struct file_operations debug_status_fops = { | |
452 | .open = debug_status_open, | |
453 | .read = seq_read, | |
454 | .llseek = seq_lseek, | |
455 | .release = single_release, | |
456 | }; | |
457 | ||
458 | static const struct file_operations debug_dmem_fops = { | |
459 | .open = debug_dmem_open, | |
460 | .read = seq_read, | |
461 | .llseek = seq_lseek, | |
462 | .release = single_release, | |
463 | }; | |
464 | ||
465 | static const struct file_operations debug_etd_fops = { | |
466 | .open = debug_etd_open, | |
467 | .read = seq_read, | |
468 | .llseek = seq_lseek, | |
469 | .release = single_release, | |
470 | }; | |
471 | ||
472 | static const struct file_operations debug_statistics_fops = { | |
473 | .open = debug_statistics_open, | |
474 | .read = seq_read, | |
475 | .llseek = seq_lseek, | |
476 | .release = single_release, | |
477 | }; | |
478 | ||
479 | static const struct file_operations debug_isoc_fops = { | |
480 | .open = debug_isoc_open, | |
481 | .read = seq_read, | |
482 | .llseek = seq_lseek, | |
483 | .release = single_release, | |
484 | }; | |
485 | ||
486 | static void create_debug_files(struct imx21 *imx21) | |
487 | { | |
488 | imx21->debug_root = debugfs_create_dir(dev_name(imx21->dev), NULL); | |
489 | if (!imx21->debug_root) | |
490 | goto failed_create_rootdir; | |
491 | ||
492 | if (!debugfs_create_file("status", S_IRUGO, | |
493 | imx21->debug_root, imx21, &debug_status_fops)) | |
494 | goto failed_create; | |
495 | ||
496 | if (!debugfs_create_file("dmem", S_IRUGO, | |
497 | imx21->debug_root, imx21, &debug_dmem_fops)) | |
498 | goto failed_create; | |
499 | ||
500 | if (!debugfs_create_file("etd", S_IRUGO, | |
501 | imx21->debug_root, imx21, &debug_etd_fops)) | |
502 | goto failed_create; | |
503 | ||
504 | if (!debugfs_create_file("statistics", S_IRUGO, | |
505 | imx21->debug_root, imx21, &debug_statistics_fops)) | |
506 | goto failed_create; | |
507 | ||
508 | if (!debugfs_create_file("isoc", S_IRUGO, | |
509 | imx21->debug_root, imx21, &debug_isoc_fops)) | |
510 | goto failed_create; | |
511 | ||
512 | return; | |
513 | ||
514 | failed_create: | |
515 | debugfs_remove_recursive(imx21->debug_root); | |
516 | ||
517 | failed_create_rootdir: | |
518 | imx21->debug_root = NULL; | |
519 | } | |
520 | ||
521 | ||
522 | static void remove_debug_files(struct imx21 *imx21) | |
523 | { | |
524 | if (imx21->debug_root) { | |
525 | debugfs_remove_recursive(imx21->debug_root); | |
526 | imx21->debug_root = NULL; | |
527 | } | |
528 | } | |
529 | ||
530 | #endif | |
531 |