Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / usb / host / imx21-dbg.c
blob6d7533427163decbce48bc6c6197ef17dd977073
1 /*
2 * Copyright (c) 2009 by Martin Fuzzey
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.
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.
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.
19 /* this file is part of imx21-hcd.c */
21 #ifndef DEBUG
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) {}
42 #else
44 #include <linux/debugfs.h>
45 #include <linux/seq_file.h>
47 static const char *dir_labels[] = {
48 "TD 0",
49 "OUT",
50 "IN",
51 "TD 1"
54 static const char *speed_labels[] = {
55 "Full",
56 "Low"
59 static const char *format_labels[] = {
60 "Control",
61 "ISO",
62 "Bulk",
63 "Interrupt"
66 static inline struct debug_stats *stats_for_urb(struct imx21 *imx21,
67 struct urb *urb)
69 return usb_pipeisoc(urb->pipe) ?
70 &imx21->isoc_stats : &imx21->nonisoc_stats;
73 static void debug_urb_submitted(struct imx21 *imx21, struct urb *urb)
75 stats_for_urb(imx21, urb)->submitted++;
78 static void debug_urb_completed(struct imx21 *imx21, struct urb *urb, int st)
80 if (st)
81 stats_for_urb(imx21, urb)->completed_failed++;
82 else
83 stats_for_urb(imx21, urb)->completed_ok++;
86 static void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb)
88 stats_for_urb(imx21, urb)->unlinked++;
91 static void debug_urb_queued_for_etd(struct imx21 *imx21, struct urb *urb)
93 stats_for_urb(imx21, urb)->queue_etd++;
96 static void debug_urb_queued_for_dmem(struct imx21 *imx21, struct urb *urb)
98 stats_for_urb(imx21, urb)->queue_dmem++;
101 static inline void debug_etd_allocated(struct imx21 *imx21)
103 imx21->etd_usage.maximum = max(
104 ++(imx21->etd_usage.value),
105 imx21->etd_usage.maximum);
108 static inline void debug_etd_freed(struct imx21 *imx21)
110 imx21->etd_usage.value--;
113 static inline void debug_dmem_allocated(struct imx21 *imx21, int size)
115 imx21->dmem_usage.value += size;
116 imx21->dmem_usage.maximum = max(
117 imx21->dmem_usage.value,
118 imx21->dmem_usage.maximum);
121 static inline void debug_dmem_freed(struct imx21 *imx21, int size)
123 imx21->dmem_usage.value -= size;
127 static void debug_isoc_submitted(struct imx21 *imx21,
128 int frame, struct td *td)
130 struct debug_isoc_trace *trace = &imx21->isoc_trace[
131 imx21->isoc_trace_index++];
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;
140 static inline void debug_isoc_completed(struct imx21 *imx21,
141 int frame, struct td *td, int cc, int len)
143 struct debug_isoc_trace *trace, *trace_failed;
144 int i;
145 int found = 0;
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;
159 if (found && cc) {
160 trace_failed = &imx21->isoc_trace_failed[
161 imx21->isoc_trace_index_failed++];
163 imx21->isoc_trace_index_failed %= ARRAY_SIZE(
164 imx21->isoc_trace_failed);
165 *trace_failed = *trace;
170 static char *format_ep(struct usb_host_endpoint *ep, char *buf, int bufsize)
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;
182 static char *format_etd_dword0(u32 value, char *buf, int bufsize)
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;
195 static int debug_status_show(struct seq_file *s, void *v)
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;
212 spin_lock_irqsave(&imx21->lock, flags);
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++;
224 list_for_each_entry(dmem, &imx21->dmem_list, list) {
225 dmem_bytes += dmem->size;
226 dmem_blocks++;
229 list_for_each_entry(ep_priv, &imx21->queue_for_etd, queue)
230 queued_for_etd++;
232 list_for_each_entry(etd, &imx21->queue_for_dmem, queue)
233 queued_for_dmem++;
235 spin_unlock_irqrestore(&imx21->lock, flags);
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"
242 "DMEM alocated: %d/%d (max=%d)\n"
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);
255 return 0;
258 static int debug_dmem_show(struct seq_file *s, void *v)
260 struct imx21 *imx21 = s->private;
261 struct imx21_dmem_area *dmem;
262 unsigned long flags;
263 char ep_text[40];
265 spin_lock_irqsave(&imx21->lock, flags);
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)));
274 spin_unlock_irqrestore(&imx21->lock, flags);
276 return 0;
279 static int debug_etd_show(struct seq_file *s, void *v)
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;
288 spin_lock_irqsave(&imx21->lock, flags);
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;
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",
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);
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;
332 seq_printf(s,
333 "dword %d: submitted=%08X cur=%08X [%s]\n",
335 etd->submitted_dwords[j],
336 dword,
337 buf);
339 seq_printf(s, "\n");
342 spin_unlock_irqrestore(&imx21->lock, flags);
344 return 0;
347 static void debug_statistics_show_one(struct seq_file *s,
348 const char *name, struct debug_stats *stats)
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);
366 static int debug_statistics_show(struct seq_file *s, void *v)
368 struct imx21 *imx21 = s->private;
369 unsigned long flags;
371 spin_lock_irqsave(&imx21->lock, flags);
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);
378 return 0;
381 static void debug_isoc_show_one(struct seq_file *s,
382 const char *name, int index, struct debug_isoc_trace *trace)
384 seq_printf(s, "%s %d:\n"
385 "cc=0X%02X\n"
386 "scheduled frame %d (%d)\n"
387 "submitted frame %d (%d)\n"
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);
400 static int debug_isoc_show(struct seq_file *s, void *v)
402 struct imx21 *imx21 = s->private;
403 struct debug_isoc_trace *trace;
404 unsigned long flags;
405 int i;
407 spin_lock_irqsave(&imx21->lock, flags);
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);
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);
417 spin_unlock_irqrestore(&imx21->lock, flags);
419 return 0;
422 static int debug_status_open(struct inode *inode, struct file *file)
424 return single_open(file, debug_status_show, inode->i_private);
427 static int debug_dmem_open(struct inode *inode, struct file *file)
429 return single_open(file, debug_dmem_show, inode->i_private);
432 static int debug_etd_open(struct inode *inode, struct file *file)
434 return single_open(file, debug_etd_show, inode->i_private);
437 static int debug_statistics_open(struct inode *inode, struct file *file)
439 return single_open(file, debug_statistics_show, inode->i_private);
442 static int debug_isoc_open(struct inode *inode, struct file *file)
444 return single_open(file, debug_isoc_show, inode->i_private);
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,
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,
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,
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,
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,
482 static void create_debug_files(struct imx21 *imx21)
484 imx21->debug_root = debugfs_create_dir(dev_name(imx21->dev), NULL);
485 if (!imx21->debug_root)
486 goto failed_create_rootdir;
488 if (!debugfs_create_file("status", S_IRUGO,
489 imx21->debug_root, imx21, &debug_status_fops))
490 goto failed_create;
492 if (!debugfs_create_file("dmem", S_IRUGO,
493 imx21->debug_root, imx21, &debug_dmem_fops))
494 goto failed_create;
496 if (!debugfs_create_file("etd", S_IRUGO,
497 imx21->debug_root, imx21, &debug_etd_fops))
498 goto failed_create;
500 if (!debugfs_create_file("statistics", S_IRUGO,
501 imx21->debug_root, imx21, &debug_statistics_fops))
502 goto failed_create;
504 if (!debugfs_create_file("isoc", S_IRUGO,
505 imx21->debug_root, imx21, &debug_isoc_fops))
506 goto failed_create;
508 return;
510 failed_create:
511 debugfs_remove_recursive(imx21->debug_root);
513 failed_create_rootdir:
514 imx21->debug_root = NULL;
518 static void remove_debug_files(struct imx21 *imx21)
520 if (imx21->debug_root) {
521 debugfs_remove_recursive(imx21->debug_root);
522 imx21->debug_root = NULL;
526 #endif