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RT-AC56 3.0.0.4.374.37 core
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / usb / host / ehci-dbg.c
blob064426751d32ae6f0871214b963ad6e43f139f5d
1 /*
2 * Copyright (c) 2001-2002 by David Brownell
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 ehci-hcd.c */
20
21 #define ehci_dbg(ehci, fmt, args...) \
22 dev_dbg (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
23 #define ehci_err(ehci, fmt, args...) \
24 dev_err (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
25 #define ehci_info(ehci, fmt, args...) \
26 dev_info (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
27 #define ehci_warn(ehci, fmt, args...) \
28 dev_warn (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
29
30 #ifdef VERBOSE_DEBUG
31 # define vdbg dbg
32 # define ehci_vdbg ehci_dbg
33 #else
34 # define vdbg(fmt,args...) do { } while (0)
35 # define ehci_vdbg(ehci, fmt, args...) do { } while (0)
36 #endif
37
38 #ifdef DEBUG
39
40 /* check the values in the HCSPARAMS register
41 * (host controller _Structural_ parameters)
42 * see EHCI spec, Table 2-4 for each value
43 */
44 static void dbg_hcs_params (struct ehci_hcd *ehci, char *label)
45 {
46 u32 params = ehci_readl(ehci, &ehci->caps->hcs_params);
47
48 ehci_dbg (ehci,
49 "%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n",
50 label, params,
51 HCS_DEBUG_PORT (params),
52 HCS_INDICATOR (params) ? " ind" : "",
53 HCS_N_CC (params),
54 HCS_N_PCC (params),
55 HCS_PORTROUTED (params) ? "" : " ordered",
56 HCS_PPC (params) ? "" : " !ppc",
57 HCS_N_PORTS (params)
58 );
59 /* Port routing, per EHCI 0.95 Spec, Section 2.2.5 */
60 if (HCS_PORTROUTED (params)) {
61 int i;
62 char buf [46], tmp [7], byte;
63
64 buf[0] = 0;
65 for (i = 0; i < HCS_N_PORTS (params); i++) {
66 byte = readb (&ehci->caps->portroute[(i>>1)]);
67 sprintf(tmp, "%d ",
68 ((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf)));
69 strcat(buf, tmp);
70 }
71 ehci_dbg (ehci, "%s portroute %s\n",
72 label, buf);
73 }
74 }
75 #else
76
77 static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {}
78
79 #endif
80
81 #ifdef DEBUG
82
83 /* check the values in the HCCPARAMS register
84 * (host controller _Capability_ parameters)
85 * see EHCI Spec, Table 2-5 for each value
86 * */
87 static void dbg_hcc_params (struct ehci_hcd *ehci, char *label)
88 {
89 u32 params = ehci_readl(ehci, &ehci->caps->hcc_params);
90
91 if (HCC_ISOC_CACHE (params)) {
92 ehci_dbg (ehci,
93 "%s hcc_params %04x caching frame %s%s%s\n",
94 label, params,
95 HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
96 HCC_CANPARK(params) ? " park" : "",
97 HCC_64BIT_ADDR(params) ? " 64 bit addr" : "");
98 } else {
99 ehci_dbg (ehci,
100 "%s hcc_params %04x thresh %d uframes %s%s%s%s%s%s%s\n",
101 label,
102 params,
103 HCC_ISOC_THRES(params),
104 HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
105 HCC_CANPARK(params) ? " park" : "",
106 HCC_64BIT_ADDR(params) ? " 64 bit addr" : "",
107 HCC_LPM(params) ? " LPM" : "",
108 HCC_PER_PORT_CHANGE_EVENT(params) ? " ppce" : "",
109 HCC_HW_PREFETCH(params) ? " hw prefetch" : "",
110 HCC_32FRAME_PERIODIC_LIST(params) ?
111 " 32 peridic list" : "");
112 }
113 }
114 #else
115
116 static inline void dbg_hcc_params (struct ehci_hcd *ehci, char *label) {}
117
118 #endif
119
120 #ifdef DEBUG
121
122 static void __maybe_unused
123 dbg_qtd (const char *label, struct ehci_hcd *ehci, struct ehci_qtd *qtd)
124 {
125 ehci_dbg(ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
126 hc32_to_cpup(ehci, &qtd->hw_next),
127 hc32_to_cpup(ehci, &qtd->hw_alt_next),
128 hc32_to_cpup(ehci, &qtd->hw_token),
129 hc32_to_cpup(ehci, &qtd->hw_buf [0]));
130 if (qtd->hw_buf [1])
131 ehci_dbg(ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n",
132 hc32_to_cpup(ehci, &qtd->hw_buf[1]),
133 hc32_to_cpup(ehci, &qtd->hw_buf[2]),
134 hc32_to_cpup(ehci, &qtd->hw_buf[3]),
135 hc32_to_cpup(ehci, &qtd->hw_buf[4]));
136 }
137
138 static void __maybe_unused
139 dbg_qh (const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh)
140 {
141 struct ehci_qh_hw *hw = qh->hw;
142
143 ehci_dbg (ehci, "%s qh %p n%08x info %x %x qtd %x\n", label,
144 qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current);
145 dbg_qtd("overlay", ehci, (struct ehci_qtd *) &hw->hw_qtd_next);
146 }
147
148 static void __maybe_unused
149 dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd)
150 {
151 ehci_dbg (ehci, "%s [%d] itd %p, next %08x, urb %p\n",
152 label, itd->frame, itd, hc32_to_cpu(ehci, itd->hw_next),
153 itd->urb);
154 ehci_dbg (ehci,
155 " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
156 hc32_to_cpu(ehci, itd->hw_transaction[0]),
157 hc32_to_cpu(ehci, itd->hw_transaction[1]),
158 hc32_to_cpu(ehci, itd->hw_transaction[2]),
159 hc32_to_cpu(ehci, itd->hw_transaction[3]),
160 hc32_to_cpu(ehci, itd->hw_transaction[4]),
161 hc32_to_cpu(ehci, itd->hw_transaction[5]),
162 hc32_to_cpu(ehci, itd->hw_transaction[6]),
163 hc32_to_cpu(ehci, itd->hw_transaction[7]));
164 ehci_dbg (ehci,
165 " buf: %08x %08x %08x %08x %08x %08x %08x\n",
166 hc32_to_cpu(ehci, itd->hw_bufp[0]),
167 hc32_to_cpu(ehci, itd->hw_bufp[1]),
168 hc32_to_cpu(ehci, itd->hw_bufp[2]),
169 hc32_to_cpu(ehci, itd->hw_bufp[3]),
170 hc32_to_cpu(ehci, itd->hw_bufp[4]),
171 hc32_to_cpu(ehci, itd->hw_bufp[5]),
172 hc32_to_cpu(ehci, itd->hw_bufp[6]));
173 ehci_dbg (ehci, " index: %d %d %d %d %d %d %d %d\n",
174 itd->index[0], itd->index[1], itd->index[2],
175 itd->index[3], itd->index[4], itd->index[5],
176 itd->index[6], itd->index[7]);
177 }
178
179 static void __maybe_unused
180 dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd)
181 {
182 ehci_dbg (ehci, "%s [%d] sitd %p, next %08x, urb %p\n",
183 label, sitd->frame, sitd, hc32_to_cpu(ehci, sitd->hw_next),
184 sitd->urb);
185 ehci_dbg (ehci,
186 " addr %08x sched %04x result %08x buf %08x %08x\n",
187 hc32_to_cpu(ehci, sitd->hw_fullspeed_ep),
188 hc32_to_cpu(ehci, sitd->hw_uframe),
189 hc32_to_cpu(ehci, sitd->hw_results),
190 hc32_to_cpu(ehci, sitd->hw_buf[0]),
191 hc32_to_cpu(ehci, sitd->hw_buf[1]));
192 }
193
194 static int __maybe_unused
195 dbg_status_buf (char *buf, unsigned len, const char *label, u32 status)
196 {
197 return scnprintf (buf, len,
198 "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s%s",
199 label, label [0] ? " " : "", status,
200 (status & STS_PPCE_MASK) ? " PPCE" : "",
201 (status & STS_ASS) ? " Async" : "",
202 (status & STS_PSS) ? " Periodic" : "",
203 (status & STS_RECL) ? " Recl" : "",
204 (status & STS_HALT) ? " Halt" : "",
205 (status & STS_IAA) ? " IAA" : "",
206 (status & STS_FATAL) ? " FATAL" : "",
207 (status & STS_FLR) ? " FLR" : "",
208 (status & STS_PCD) ? " PCD" : "",
209 (status & STS_ERR) ? " ERR" : "",
210 (status & STS_INT) ? " INT" : ""
211 );
212 }
213
214 static int __maybe_unused
215 dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable)
216 {
217 return scnprintf (buf, len,
218 "%s%sintrenable %02x%s%s%s%s%s%s%s",
219 label, label [0] ? " " : "", enable,
220 (enable & STS_PPCE_MASK) ? " PPCE" : "",
221 (enable & STS_IAA) ? " IAA" : "",
222 (enable & STS_FATAL) ? " FATAL" : "",
223 (enable & STS_FLR) ? " FLR" : "",
224 (enable & STS_PCD) ? " PCD" : "",
225 (enable & STS_ERR) ? " ERR" : "",
226 (enable & STS_INT) ? " INT" : ""
227 );
228 }
229
230 static const char *const fls_strings [] =
231 { "1024", "512", "256", "??" };
232
233 static int
234 dbg_command_buf (char *buf, unsigned len, const char *label, u32 command)
235 {
236 return scnprintf (buf, len,
237 "%s%scommand %07x %s%s%s%s%s%s=%d ithresh=%d%s%s%s%s "
238 "period=%s%s %s",
239 label, label [0] ? " " : "", command,
240 (command & CMD_HIRD) ? " HIRD" : "",
241 (command & CMD_PPCEE) ? " PPCEE" : "",
242 (command & CMD_FSP) ? " FSP" : "",
243 (command & CMD_ASPE) ? " ASPE" : "",
244 (command & CMD_PSPE) ? " PSPE" : "",
245 (command & CMD_PARK) ? " park" : "(park)",
246 CMD_PARK_CNT (command),
247 (command >> 16) & 0x3f,
248 (command & CMD_LRESET) ? " LReset" : "",
249 (command & CMD_IAAD) ? " IAAD" : "",
250 (command & CMD_ASE) ? " Async" : "",
251 (command & CMD_PSE) ? " Periodic" : "",
252 fls_strings [(command >> 2) & 0x3],
253 (command & CMD_RESET) ? " Reset" : "",
254 (command & CMD_RUN) ? "RUN" : "HALT"
255 );
256 }
257
258 static int
259 dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
260 {
261 char *sig;
262
263 /* signaling state */
264 switch (status & (3 << 10)) {
265 case 0 << 10: sig = "se0"; break;
266 case 1 << 10: sig = "k"; break; /* low speed */
267 case 2 << 10: sig = "j"; break;
268 default: sig = "?"; break;
269 }
270
271 return scnprintf (buf, len,
272 "%s%sport:%d status %06x %d %s%s%s%s%s%s "
273 "sig=%s%s%s%s%s%s%s%s%s%s%s",
274 label, label [0] ? " " : "", port, status,
275 status>>25,/*device address */
276 (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_ACK ?
277 " ACK" : "",
278 (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_NYET ?
279 " NYET" : "",
280 (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_STALL ?
281 " STALL" : "",
282 (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_ERR ?
283 " ERR" : "",
284 (status & PORT_POWER) ? " POWER" : "",
285 (status & PORT_OWNER) ? " OWNER" : "",
286 sig,
287 (status & PORT_LPM) ? " LPM" : "",
288 (status & PORT_RESET) ? " RESET" : "",
289 (status & PORT_SUSPEND) ? " SUSPEND" : "",
290 (status & PORT_RESUME) ? " RESUME" : "",
291 (status & PORT_OCC) ? " OCC" : "",
292 (status & PORT_OC) ? " OC" : "",
293 (status & PORT_PEC) ? " PEC" : "",
294 (status & PORT_PE) ? " PE" : "",
295 (status & PORT_CSC) ? " CSC" : "",
296 (status & PORT_CONNECT) ? " CONNECT" : "");
297 }
298
299 #else
300 static inline void __maybe_unused
301 dbg_qh (char *label, struct ehci_hcd *ehci, struct ehci_qh *qh)
302 {}
303
304 static inline int __maybe_unused
305 dbg_status_buf (char *buf, unsigned len, const char *label, u32 status)
306 { return 0; }
307
308 static inline int __maybe_unused
309 dbg_command_buf (char *buf, unsigned len, const char *label, u32 command)
310 { return 0; }
311
312 static inline int __maybe_unused
313 dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable)
314 { return 0; }
315
316 static inline int __maybe_unused
317 dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
318 { return 0; }
319
320 #endif /* DEBUG */
321
322 /* functions have the "wrong" filename when they're output... */
323 #define dbg_status(ehci, label, status) { \
324 char _buf [80]; \
325 dbg_status_buf (_buf, sizeof _buf, label, status); \
326 ehci_dbg (ehci, "%s\n", _buf); \
327 }
328
329 #define dbg_cmd(ehci, label, command) { \
330 char _buf [80]; \
331 dbg_command_buf (_buf, sizeof _buf, label, command); \
332 ehci_dbg (ehci, "%s\n", _buf); \
333 }
334
335 #define dbg_port(ehci, label, port, status) { \
336 char _buf [80]; \
337 dbg_port_buf (_buf, sizeof _buf, label, port, status); \
338 ehci_dbg (ehci, "%s\n", _buf); \
339 }
340
341 /*-------------------------------------------------------------------------*/
342
343 #ifdef STUB_DEBUG_FILES
344
345 static inline void create_debug_files (struct ehci_hcd *bus) { }
346 static inline void remove_debug_files (struct ehci_hcd *bus) { }
347
348 #else
349
350 /* troubleshooting help: expose state in debugfs */
351
352 static int debug_async_open(struct inode *, struct file *);
353 static int debug_periodic_open(struct inode *, struct file *);
354 static int debug_registers_open(struct inode *, struct file *);
355 static int debug_async_open(struct inode *, struct file *);
356 static int debug_lpm_open(struct inode *, struct file *);
357 static ssize_t debug_lpm_read(struct file *file, char __user *user_buf,
358 size_t count, loff_t *ppos);
359 static ssize_t debug_lpm_write(struct file *file, const char __user *buffer,
360 size_t count, loff_t *ppos);
361 static int debug_lpm_close(struct inode *inode, struct file *file);
362
363 static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*);
364 static int debug_close(struct inode *, struct file *);
365
366 static const struct file_operations debug_async_fops = {
367 .owner = THIS_MODULE,
368 .open = debug_async_open,
369 .read = debug_output,
370 .release = debug_close,
371 };
372 static const struct file_operations debug_periodic_fops = {
373 .owner = THIS_MODULE,
374 .open = debug_periodic_open,
375 .read = debug_output,
376 .release = debug_close,
377 };
378 static const struct file_operations debug_registers_fops = {
379 .owner = THIS_MODULE,
380 .open = debug_registers_open,
381 .read = debug_output,
382 .release = debug_close,
383 };
384 static const struct file_operations debug_lpm_fops = {
385 .owner = THIS_MODULE,
386 .open = debug_lpm_open,
387 .read = debug_lpm_read,
388 .write = debug_lpm_write,
389 .release = debug_lpm_close,
390 };
391
392 static struct dentry *ehci_debug_root;
393
394 struct debug_buffer {
395 ssize_t (*fill_func)(struct debug_buffer *); /* fill method */
396 struct usb_bus *bus;
397 struct mutex mutex; /* protect filling of buffer */
398 size_t count; /* number of characters filled into buffer */
399 char *output_buf;
400 size_t alloc_size;
401 };
402
403 #define speed_char(info1) ({ char tmp; \
404 switch (info1 & (3 << 12)) { \
405 case 0 << 12: tmp = 'f'; break; \
406 case 1 << 12: tmp = 'l'; break; \
407 case 2 << 12: tmp = 'h'; break; \
408 default: tmp = '?'; break; \
409 }; tmp; })
410
411 static inline char token_mark(struct ehci_hcd *ehci, __hc32 token)
412 {
413 __u32 v = hc32_to_cpu(ehci, token);
414
415 if (v & QTD_STS_ACTIVE)
416 return '*';
417 if (v & QTD_STS_HALT)
418 return '-';
419 if (!IS_SHORT_READ (v))
420 return ' ';
421 /* tries to advance through hw_alt_next */
422 return '/';
423 }
424
425 static void qh_lines (
426 struct ehci_hcd *ehci,
427 struct ehci_qh *qh,
428 char **nextp,
429 unsigned *sizep
430 )
431 {
432 u32 scratch;
433 u32 hw_curr;
434 struct list_head *entry;
435 struct ehci_qtd *td;
436 unsigned temp;
437 unsigned size = *sizep;
438 char *next = *nextp;
439 char mark;
440 __le32 list_end = EHCI_LIST_END(ehci);
441 struct ehci_qh_hw *hw = qh->hw;
442
443 if (hw->hw_qtd_next == list_end) /* NEC does this */
444 mark = '@';
445 else
446 mark = token_mark(ehci, hw->hw_token);
447 if (mark == '/') { /* qh_alt_next controls qh advance? */
448 if ((hw->hw_alt_next & QTD_MASK(ehci))
449 == ehci->async->hw->hw_alt_next)
450 mark = '#'; /* blocked */
451 else if (hw->hw_alt_next == list_end)
452 mark = '.'; /* use hw_qtd_next */
453 /* else alt_next points to some other qtd */
454 }
455 scratch = hc32_to_cpup(ehci, &hw->hw_info1);
456 hw_curr = (mark == '*') ? hc32_to_cpup(ehci, &hw->hw_current) : 0;
457 temp = scnprintf (next, size,
458 "qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)",
459 qh, scratch & 0x007f,
460 speed_char (scratch),
461 (scratch >> 8) & 0x000f,
462 scratch, hc32_to_cpup(ehci, &hw->hw_info2),
463 hc32_to_cpup(ehci, &hw->hw_token), mark,
464 (cpu_to_hc32(ehci, QTD_TOGGLE) & hw->hw_token)
465 ? "data1" : "data0",
466 (hc32_to_cpup(ehci, &hw->hw_alt_next) >> 1) & 0x0f);
467 size -= temp;
468 next += temp;
469
470 /* hc may be modifying the list as we read it ... */
471 list_for_each (entry, &qh->qtd_list) {
472 td = list_entry (entry, struct ehci_qtd, qtd_list);
473 scratch = hc32_to_cpup(ehci, &td->hw_token);
474 mark = ' ';
475 if (hw_curr == td->qtd_dma)
476 mark = '*';
477 else if (hw->hw_qtd_next == cpu_to_hc32(ehci, td->qtd_dma))
478 mark = '+';
479 else if (QTD_LENGTH (scratch)) {
480 if (td->hw_alt_next == ehci->async->hw->hw_alt_next)
481 mark = '#';
482 else if (td->hw_alt_next != list_end)
483 mark = '/';
484 }
485 temp = snprintf (next, size,
486 "\n\t%p%c%s len=%d %08x urb %p",
487 td, mark, ({ char *tmp;
488 switch ((scratch>>8)&0x03) {
489 case 0: tmp = "out"; break;
490 case 1: tmp = "in"; break;
491 case 2: tmp = "setup"; break;
492 default: tmp = "?"; break;
493 } tmp;}),
494 (scratch >> 16) & 0x7fff,
495 scratch,
496 td->urb);
497 if (size < temp)
498 temp = size;
499 size -= temp;
500 next += temp;
501 if (temp == size)
502 goto done;
503 }
504
505 temp = snprintf (next, size, "\n");
506 if (size < temp)
507 temp = size;
508 size -= temp;
509 next += temp;
510
511 done:
512 *sizep = size;
513 *nextp = next;
514 }
515
516 static ssize_t fill_async_buffer(struct debug_buffer *buf)
517 {
518 struct usb_hcd *hcd;
519 struct ehci_hcd *ehci;
520 unsigned long flags;
521 unsigned temp, size;
522 char *next;
523 struct ehci_qh *qh;
524
525 hcd = bus_to_hcd(buf->bus);
526 ehci = hcd_to_ehci (hcd);
527 next = buf->output_buf;
528 size = buf->alloc_size;
529
530 *next = 0;
531
532 /* dumps a snapshot of the async schedule.
533 * usually empty except for long-term bulk reads, or head.
534 * one QH per line, and TDs we know about
535 */
536 spin_lock_irqsave (&ehci->lock, flags);
537 for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh)
538 qh_lines (ehci, qh, &next, &size);
539 if (ehci->reclaim && size > 0) {
540 temp = scnprintf (next, size, "\nreclaim =\n");
541 size -= temp;
542 next += temp;
543
544 for (qh = ehci->reclaim; size > 0 && qh; qh = qh->reclaim)
545 qh_lines (ehci, qh, &next, &size);
546 }
547 spin_unlock_irqrestore (&ehci->lock, flags);
548
549 return strlen(buf->output_buf);
550 }
551
552 #define DBG_SCHED_LIMIT 64
553 static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
554 {
555 struct usb_hcd *hcd;
556 struct ehci_hcd *ehci;
557 unsigned long flags;
558 union ehci_shadow p, *seen;
559 unsigned temp, size, seen_count;
560 char *next;
561 unsigned i;
562 __hc32 tag;
563
564 if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
565 return 0;
566 seen_count = 0;
567
568 hcd = bus_to_hcd(buf->bus);
569 ehci = hcd_to_ehci (hcd);
570 next = buf->output_buf;
571 size = buf->alloc_size;
572
573 temp = scnprintf (next, size, "size = %d\n", ehci->periodic_size);
574 size -= temp;
575 next += temp;
576
577 /* dump a snapshot of the periodic schedule.
578 * iso changes, interrupt usually doesn't.
579 */
580 spin_lock_irqsave (&ehci->lock, flags);
581 for (i = 0; i < ehci->periodic_size; i++) {
582 p = ehci->pshadow [i];
583 if (likely (!p.ptr))
584 continue;
585 tag = Q_NEXT_TYPE(ehci, ehci->periodic [i]);
586
587 temp = scnprintf (next, size, "%4d: ", i);
588 size -= temp;
589 next += temp;
590
591 do {
592 struct ehci_qh_hw *hw;
593
594 switch (hc32_to_cpu(ehci, tag)) {
595 case Q_TYPE_QH:
596 hw = p.qh->hw;
597 temp = scnprintf (next, size, " qh%d-%04x/%p",
598 p.qh->period,
599 hc32_to_cpup(ehci,
600 &hw->hw_info2)
601 /* uframe masks */
602 & (QH_CMASK | QH_SMASK),
603 p.qh);
604 size -= temp;
605 next += temp;
606 /* don't repeat what follows this qh */
607 for (temp = 0; temp < seen_count; temp++) {
608 if (seen [temp].ptr != p.ptr)
609 continue;
610 if (p.qh->qh_next.ptr) {
611 temp = scnprintf (next, size,
612 " ...");
613 size -= temp;
614 next += temp;
615 }
616 break;
617 }
618 /* show more info the first time around */
619 if (temp == seen_count) {
620 u32 scratch = hc32_to_cpup(ehci,
621 &hw->hw_info1);
622 struct ehci_qtd *qtd;
623 char *type = "";
624
625 /* count tds, get ep direction */
626 temp = 0;
627 list_for_each_entry (qtd,
628 &p.qh->qtd_list,
629 qtd_list) {
630 temp++;
631 switch (0x03 & (hc32_to_cpu(
632 ehci,
633 qtd->hw_token) >> 8)) {
634 case 0: type = "out"; continue;
635 case 1: type = "in"; continue;
636 }
637 }
638
639 temp = scnprintf (next, size,
640 " (%c%d ep%d%s "
641 "[%d/%d] q%d p%d)",
642 speed_char (scratch),
643 scratch & 0x007f,
644 (scratch >> 8) & 0x000f, type,
645 p.qh->usecs, p.qh->c_usecs,
646 temp,
647 0x7ff & (scratch >> 16));
648
649 if (seen_count < DBG_SCHED_LIMIT)
650 seen [seen_count++].qh = p.qh;
651 } else
652 temp = 0;
653 if (p.qh) {
654 tag = Q_NEXT_TYPE(ehci, hw->hw_next);
655 p = p.qh->qh_next;
656 }
657 break;
658 case Q_TYPE_FSTN:
659 temp = scnprintf (next, size,
660 " fstn-%8x/%p", p.fstn->hw_prev,
661 p.fstn);
662 tag = Q_NEXT_TYPE(ehci, p.fstn->hw_next);
663 p = p.fstn->fstn_next;
664 break;
665 case Q_TYPE_ITD:
666 temp = scnprintf (next, size,
667 " itd/%p", p.itd);
668 tag = Q_NEXT_TYPE(ehci, p.itd->hw_next);
669 p = p.itd->itd_next;
670 break;
671 case Q_TYPE_SITD:
672 temp = scnprintf (next, size,
673 " sitd%d-%04x/%p",
674 p.sitd->stream->interval,
675 hc32_to_cpup(ehci, &p.sitd->hw_uframe)
676 & 0x0000ffff,
677 p.sitd);
678 tag = Q_NEXT_TYPE(ehci, p.sitd->hw_next);
679 p = p.sitd->sitd_next;
680 break;
681 }
682 size -= temp;
683 next += temp;
684 } while (p.ptr);
685
686 temp = scnprintf (next, size, "\n");
687 size -= temp;
688 next += temp;
689 }
690 spin_unlock_irqrestore (&ehci->lock, flags);
691 kfree (seen);
692
693 return buf->alloc_size - size;
694 }
695 #undef DBG_SCHED_LIMIT
696
697 static ssize_t fill_registers_buffer(struct debug_buffer *buf)
698 {
699 struct usb_hcd *hcd;
700 struct ehci_hcd *ehci;
701 unsigned long flags;
702 unsigned temp, size, i;
703 char *next, scratch [80];
704 static char fmt [] = "%*s\n";
705 static char label [] = "";
706
707 hcd = bus_to_hcd(buf->bus);
708 ehci = hcd_to_ehci (hcd);
709 next = buf->output_buf;
710 size = buf->alloc_size;
711
712 spin_lock_irqsave (&ehci->lock, flags);
713
714 if (!HCD_HW_ACCESSIBLE(hcd)) {
715 size = scnprintf (next, size,
716 "bus %s, device %s\n"
717 "%s\n"
718 "SUSPENDED (no register access)\n",
719 hcd->self.controller->bus->name,
720 dev_name(hcd->self.controller),
721 hcd->product_desc);
722 goto done;
723 }
724
725 /* Capability Registers */
726 i = HC_VERSION(ehci_readl(ehci, &ehci->caps->hc_capbase));
727 temp = scnprintf (next, size,
728 "bus %s, device %s\n"
729 "%s\n"
730 "EHCI %x.%02x, hcd state %d\n",
731 hcd->self.controller->bus->name,
732 dev_name(hcd->self.controller),
733 hcd->product_desc,
734 i >> 8, i & 0x0ff, hcd->state);
735 size -= temp;
736 next += temp;
737
738 #ifdef CONFIG_PCI
739 /* EHCI 0.96 and later may have "extended capabilities" */
740 if (hcd->self.controller->bus == &pci_bus_type) {
741 struct pci_dev *pdev;
742 u32 offset, cap, cap2;
743 unsigned count = 256/4;
744
745 pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller);
746 offset = HCC_EXT_CAPS(ehci_readl(ehci,
747 &ehci->caps->hcc_params));
748 while (offset && count--) {
749 pci_read_config_dword (pdev, offset, &cap);
750 switch (cap & 0xff) {
751 case 1:
752 temp = scnprintf (next, size,
753 "ownership %08x%s%s\n", cap,
754 (cap & (1 << 24)) ? " linux" : "",
755 (cap & (1 << 16)) ? " firmware" : "");
756 size -= temp;
757 next += temp;
758
759 offset += 4;
760 pci_read_config_dword (pdev, offset, &cap2);
761 temp = scnprintf (next, size,
762 "SMI sts/enable 0x%08x\n", cap2);
763 size -= temp;
764 next += temp;
765 break;
766 case 0: /* illegal reserved capability */
767 cap = 0;
768 /* FALLTHROUGH */
769 default: /* unknown */
770 break;
771 }
772 temp = (cap >> 8) & 0xff;
773 }
774 }
775 #endif
776
777 i = ehci_readl(ehci, &ehci->caps->hcs_params);
778 temp = scnprintf (next, size, "structural params 0x%08x\n", i);
779 size -= temp;
780 next += temp;
781
782 i = ehci_readl(ehci, &ehci->caps->hcc_params);
783 temp = scnprintf (next, size, "capability params 0x%08x\n", i);
784 size -= temp;
785 next += temp;
786
787 /* Operational Registers */
788 temp = dbg_status_buf (scratch, sizeof scratch, label,
789 ehci_readl(ehci, &ehci->regs->status));
790 temp = scnprintf (next, size, fmt, temp, scratch);
791 size -= temp;
792 next += temp;
793
794 temp = dbg_command_buf (scratch, sizeof scratch, label,
795 ehci_readl(ehci, &ehci->regs->command));
796 temp = scnprintf (next, size, fmt, temp, scratch);
797 size -= temp;
798 next += temp;
799
800 temp = dbg_intr_buf (scratch, sizeof scratch, label,
801 ehci_readl(ehci, &ehci->regs->intr_enable));
802 temp = scnprintf (next, size, fmt, temp, scratch);
803 size -= temp;
804 next += temp;
805
806 temp = scnprintf (next, size, "uframe %04x\n",
807 ehci_readl(ehci, &ehci->regs->frame_index));
808 size -= temp;
809 next += temp;
810
811 for (i = 1; i <= HCS_N_PORTS (ehci->hcs_params); i++) {
812 temp = dbg_port_buf (scratch, sizeof scratch, label, i,
813 ehci_readl(ehci,
814 &ehci->regs->port_status[i - 1]));
815 temp = scnprintf (next, size, fmt, temp, scratch);
816 size -= temp;
817 next += temp;
818 if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) {
819 temp = scnprintf (next, size,
820 " debug control %08x\n",
821 ehci_readl(ehci,
822 &ehci->debug->control));
823 size -= temp;
824 next += temp;
825 }
826 }
827
828 if (ehci->reclaim) {
829 temp = scnprintf(next, size, "reclaim qh %p\n", ehci->reclaim);
830 size -= temp;
831 next += temp;
832 }
833
834 #ifdef EHCI_STATS
835 temp = scnprintf (next, size,
836 "irq normal %ld err %ld reclaim %ld (lost %ld)\n",
837 ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim,
838 ehci->stats.lost_iaa);
839 size -= temp;
840 next += temp;
841
842 temp = scnprintf (next, size, "complete %ld unlink %ld\n",
843 ehci->stats.complete, ehci->stats.unlink);
844 size -= temp;
845 next += temp;
846 #endif
847
848 done:
849 spin_unlock_irqrestore (&ehci->lock, flags);
850
851 return buf->alloc_size - size;
852 }
853
854 static struct debug_buffer *alloc_buffer(struct usb_bus *bus,
855 ssize_t (*fill_func)(struct debug_buffer *))
856 {
857 struct debug_buffer *buf;
858
859 buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL);
860
861 if (buf) {
862 buf->bus = bus;
863 buf->fill_func = fill_func;
864 mutex_init(&buf->mutex);
865 buf->alloc_size = PAGE_SIZE;
866 }
867
868 return buf;
869 }
870
871 static int fill_buffer(struct debug_buffer *buf)
872 {
873 int ret = 0;
874
875 if (!buf->output_buf)
876 buf->output_buf = (char *)vmalloc(buf->alloc_size);
877
878 if (!buf->output_buf) {
879 ret = -ENOMEM;
880 goto out;
881 }
882
883 ret = buf->fill_func(buf);
884
885 if (ret >= 0) {
886 buf->count = ret;
887 ret = 0;
888 }
889
890 out:
891 return ret;
892 }
893
894 static ssize_t debug_output(struct file *file, char __user *user_buf,
895 size_t len, loff_t *offset)
896 {
897 struct debug_buffer *buf = file->private_data;
898 int ret = 0;
899
900 mutex_lock(&buf->mutex);
901 if (buf->count == 0) {
902 ret = fill_buffer(buf);
903 if (ret != 0) {
904 mutex_unlock(&buf->mutex);
905 goto out;
906 }
907 }
908 mutex_unlock(&buf->mutex);
909
910 ret = simple_read_from_buffer(user_buf, len, offset,
911 buf->output_buf, buf->count);
912
913 out:
914 return ret;
915
916 }
917
918 static int debug_close(struct inode *inode, struct file *file)
919 {
920 struct debug_buffer *buf = file->private_data;
921
922 if (buf) {
923 vfree(buf->output_buf);
924 kfree(buf);
925 }
926
927 return 0;
928 }
929 static int debug_async_open(struct inode *inode, struct file *file)
930 {
931 file->private_data = alloc_buffer(inode->i_private, fill_async_buffer);
932
933 return file->private_data ? 0 : -ENOMEM;
934 }
935
936 static int debug_periodic_open(struct inode *inode, struct file *file)
937 {
938 struct debug_buffer *buf;
939 buf = alloc_buffer(inode->i_private, fill_periodic_buffer);
940 if (!buf)
941 return -ENOMEM;
942
943 buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8)*PAGE_SIZE;
944 file->private_data = buf;
945 return 0;
946 }
947
948 static int debug_registers_open(struct inode *inode, struct file *file)
949 {
950 file->private_data = alloc_buffer(inode->i_private,
951 fill_registers_buffer);
952
953 return file->private_data ? 0 : -ENOMEM;
954 }
955
956 static int debug_lpm_open(struct inode *inode, struct file *file)
957 {
958 file->private_data = inode->i_private;
959 return 0;
960 }
961
962 static int debug_lpm_close(struct inode *inode, struct file *file)
963 {
964 return 0;
965 }
966
967 static ssize_t debug_lpm_read(struct file *file, char __user *user_buf,
968 size_t count, loff_t *ppos)
969 {
970 /* TODO: show lpm stats */
971 return 0;
972 }
973
974 static ssize_t debug_lpm_write(struct file *file, const char __user *user_buf,
975 size_t count, loff_t *ppos)
976 {
977 struct usb_hcd *hcd;
978 struct ehci_hcd *ehci;
979 char buf[50];
980 size_t len;
981 u32 temp;
982 unsigned long port;
983 u32 __iomem *portsc ;
984 u32 params;
985
986 hcd = bus_to_hcd(file->private_data);
987 ehci = hcd_to_ehci(hcd);
988
989 len = min(count, sizeof(buf) - 1);
990 if (copy_from_user(buf, user_buf, len))
991 return -EFAULT;
992 buf[len] = '\0';
993 if (len > 0 && buf[len - 1] == '\n')
994 buf[len - 1] = '\0';
995
996 if (strncmp(buf, "enable", 5) == 0) {
997 if (strict_strtoul(buf + 7, 10, &port))
998 return -EINVAL;
999 params = ehci_readl(ehci, &ehci->caps->hcs_params);
1000 if (port > HCS_N_PORTS(params)) {
1001 ehci_dbg(ehci, "ERR: LPM on bad port %lu\n", port);
1002 return -ENODEV;
1003 }
1004 portsc = &ehci->regs->port_status[port-1];
1005 temp = ehci_readl(ehci, portsc);
1006 if (!(temp & PORT_DEV_ADDR)) {
1007 ehci_dbg(ehci, "LPM: no device attached\n");
1008 return -ENODEV;
1009 }
1010 temp |= PORT_LPM;
1011 ehci_writel(ehci, temp, portsc);
1012 printk(KERN_INFO "force enable LPM for port %lu\n", port);
1013 } else if (strncmp(buf, "hird=", 5) == 0) {
1014 unsigned long hird;
1015 if (strict_strtoul(buf + 5, 16, &hird))
1016 return -EINVAL;
1017 printk(KERN_INFO "setting hird %s %lu\n", buf + 6, hird);
1018 temp = ehci_readl(ehci, &ehci->regs->command);
1019 temp &= ~CMD_HIRD;
1020 temp |= hird << 24;
1021 ehci_writel(ehci, temp, &ehci->regs->command);
1022 } else if (strncmp(buf, "disable", 7) == 0) {
1023 if (strict_strtoul(buf + 8, 10, &port))
1024 return -EINVAL;
1025 params = ehci_readl(ehci, &ehci->caps->hcs_params);
1026 if (port > HCS_N_PORTS(params)) {
1027 ehci_dbg(ehci, "ERR: LPM off bad port %lu\n", port);
1028 return -ENODEV;
1029 }
1030 portsc = &ehci->regs->port_status[port-1];
1031 temp = ehci_readl(ehci, portsc);
1032 if (!(temp & PORT_DEV_ADDR)) {
1033 ehci_dbg(ehci, "ERR: no device attached\n");
1034 return -ENODEV;
1035 }
1036 temp &= ~PORT_LPM;
1037 ehci_writel(ehci, temp, portsc);
1038 printk(KERN_INFO "disabled LPM for port %lu\n", port);
1039 } else
1040 return -EOPNOTSUPP;
1041 return count;
1042 }
1043
1044 static inline void create_debug_files (struct ehci_hcd *ehci)
1045 {
1046 struct usb_bus *bus = &ehci_to_hcd(ehci)->self;
1047
1048 ehci->debug_dir = debugfs_create_dir(bus->bus_name, ehci_debug_root);
1049 if (!ehci->debug_dir)
1050 return;
1051
1052 if (!debugfs_create_file("async", S_IRUGO, ehci->debug_dir, bus,
1053 &debug_async_fops))
1054 goto file_error;
1055
1056 if (!debugfs_create_file("periodic", S_IRUGO, ehci->debug_dir, bus,
1057 &debug_periodic_fops))
1058 goto file_error;
1059
1060 if (!debugfs_create_file("registers", S_IRUGO, ehci->debug_dir, bus,
1061 &debug_registers_fops))
1062 goto file_error;
1063
1064 if (!debugfs_create_file("lpm", S_IRUGO|S_IWUSR, ehci->debug_dir, bus,
1065 &debug_lpm_fops))
1066 goto file_error;
1067
1068 return;
1069
1070 file_error:
1071 debugfs_remove_recursive(ehci->debug_dir);
1072 }
1073
1074 static inline void remove_debug_files (struct ehci_hcd *ehci)
1075 {
1076 debugfs_remove_recursive(ehci->debug_dir);
1077 }
1078
1079 #endif /* STUB_DEBUG_FILES */
Tomato firmware and modifications.