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[openwrt/openwrt.git] / target / linux / adm5120 / files / drivers / usb / host / adm5120-dbg.c
1 /*
2 * ADM5120 HCD (Host Controller Driver) for USB
3 *
4 * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
5 *
6 * This file was derived from: drivers/usb/host/ohci-dbg.c
7 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
8 * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
9 *
10 * This file is licenced under the GPL.
11 */
12
13 /*-------------------------------------------------------------------------*/
14
15 static inline char *ed_typestring(int ed_type)
16 {
17 switch (ed_type) {
18 case PIPE_CONTROL:
19 return "ctrl";
20 case PIPE_BULK:
21 return "bulk";
22 case PIPE_INTERRUPT:
23 return "intr";
24 case PIPE_ISOCHRONOUS:
25 return "isoc";
26 }
27 return "(bad ed_type)";
28 }
29
30 static inline char *ed_statestring(int state)
31 {
32 switch (state) {
33 case ED_IDLE:
34 return "IDLE";
35 case ED_UNLINK:
36 return "UNLINK";
37 case ED_OPER:
38 return "OPER";
39 }
40 return "?STATE";
41 }
42
43 static inline char *pipestring(int pipe)
44 {
45 return ed_typestring(usb_pipetype(pipe));
46 }
47
48 static inline char *td_pidstring(u32 info)
49 {
50 switch (info & TD_DP) {
51 case TD_DP_SETUP:
52 return "SETUP";
53 case TD_DP_IN:
54 return "IN";
55 case TD_DP_OUT:
56 return "OUT";
57 }
58 return "?PID";
59 }
60
61 static inline char *td_togglestring(u32 info)
62 {
63 switch (info & TD_T) {
64 case TD_T_DATA0:
65 return "DATA0";
66 case TD_T_DATA1:
67 return "DATA1";
68 case TD_T_CARRY:
69 return "CARRY";
70 }
71 return "?TOGGLE";
72 }
73
74 /*-------------------------------------------------------------------------*/
75
76 #ifdef DEBUG
77
78 /* debug| print the main components of an URB
79 * small: 0) header + data packets 1) just header
80 */
81 static void __attribute__((unused))
82 urb_print(struct admhcd *ahcd, struct urb *urb, char *str, int small)
83 {
84 unsigned int pipe = urb->pipe;
85
86 if (!urb->dev || !urb->dev->bus) {
87 admhc_dbg(ahcd, "%s URB: no dev", str);
88 return;
89 }
90
91 #ifndef ADMHC_VERBOSE_DEBUG
92 if (urb->status != 0)
93 #endif
94 admhc_dbg(ahcd, "URB-%s %p dev=%d ep=%d%s-%s flags=%x len=%d/%d "
95 "stat=%d\n",
96 str,
97 urb,
98 usb_pipedevice (pipe),
99 usb_pipeendpoint (pipe),
100 usb_pipeout(pipe)? "out" : "in",
101 pipestring(pipe),
102 urb->transfer_flags,
103 urb->actual_length,
104 urb->transfer_buffer_length,
105 urb->status);
106
107 #ifdef ADMHC_VERBOSE_DEBUG
108 if (!small) {
109 int i, len;
110
111 if (usb_pipecontrol(pipe)) {
112 admhc_dbg(ahcd, "setup(8):");
113 for (i = 0; i < 8 ; i++)
114 printk (" %02x", ((__u8 *) urb->setup_packet) [i]);
115 printk ("\n");
116 }
117 if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) {
118 admhc_dbg(ahcd, "data(%d/%d):",
119 urb->actual_length,
120 urb->transfer_buffer_length);
121 len = usb_pipeout(pipe)?
122 urb->transfer_buffer_length: urb->actual_length;
123 for (i = 0; i < 16 && i < len; i++)
124 printk(" %02x", ((__u8 *)urb->transfer_buffer)[i]);
125 printk("%s stat:%d\n", i < len? "...": "", urb->status);
126 }
127 }
128 #endif /* ADMHC_VERBOSE_DEBUG */
129 }
130
131 #define admhc_dbg_sw(ahcd, next, size, format, arg...) \
132 do { \
133 if (next) { \
134 unsigned s_len; \
135 s_len = scnprintf(*next, *size, format, ## arg ); \
136 *size -= s_len; *next += s_len; \
137 } else \
138 admhc_dbg(ahcd,format, ## arg ); \
139 } while (0);
140
141
142 static void admhc_dump_intr_mask(struct admhcd *ahcd, char *label, u32 mask,
143 char **next, unsigned *size)
144 {
145 admhc_dbg_sw(ahcd, next, size, "%s 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n",
146 label,
147 mask,
148 (mask & ADMHC_INTR_INTA) ? " INTA" : "",
149 (mask & ADMHC_INTR_FATI) ? " FATI" : "",
150 (mask & ADMHC_INTR_SWI) ? " SWI" : "",
151 (mask & ADMHC_INTR_TDC) ? " TDC" : "",
152 (mask & ADMHC_INTR_FNO) ? " FNO" : "",
153 (mask & ADMHC_INTR_SO) ? " SO" : "",
154 (mask & ADMHC_INTR_INSM) ? " INSM" : "",
155 (mask & ADMHC_INTR_BABI) ? " BABI" : "",
156 (mask & ADMHC_INTR_7) ? " !7!" : "",
157 (mask & ADMHC_INTR_6) ? " !6!" : "",
158 (mask & ADMHC_INTR_RESI) ? " RESI" : "",
159 (mask & ADMHC_INTR_SOFI) ? " SOFI" : ""
160 );
161 }
162
163 static void maybe_print_eds(struct admhcd *ahcd, char *label, u32 value,
164 char **next, unsigned *size)
165 {
166 if (value)
167 admhc_dbg_sw(ahcd, next, size, "%s %08x\n", label, value);
168 }
169
170 static char *buss2string (int state)
171 {
172 switch (state) {
173 case ADMHC_BUSS_RESET:
174 return "reset";
175 case ADMHC_BUSS_RESUME:
176 return "resume";
177 case ADMHC_BUSS_OPER:
178 return "operational";
179 case ADMHC_BUSS_SUSPEND:
180 return "suspend";
181 }
182 return "?state";
183 }
184
185 static void
186 admhc_dump_status(struct admhcd *ahcd, char **next, unsigned *size)
187 {
188 struct admhcd_regs __iomem *regs = ahcd->regs;
189 u32 temp;
190
191 temp = admhc_readl(ahcd, &regs->gencontrol);
192 admhc_dbg_sw(ahcd, next, size,
193 "gencontrol 0x%08x%s%s%s%s\n",
194 temp,
195 (temp & ADMHC_CTRL_UHFE) ? " UHFE" : "",
196 (temp & ADMHC_CTRL_SIR) ? " SIR" : "",
197 (temp & ADMHC_CTRL_DMAA) ? " DMAA" : "",
198 (temp & ADMHC_CTRL_SR) ? " SR" : ""
199 );
200
201 temp = admhc_readl(ahcd, &regs->host_control);
202 admhc_dbg_sw(ahcd, next, size,
203 "host_control 0x%08x BUSS=%s%s\n",
204 temp,
205 buss2string(temp & ADMHC_HC_BUSS),
206 (temp & ADMHC_HC_DMAE) ? " DMAE" : ""
207 );
208
209 admhc_dump_intr_mask(ahcd, "int_status",
210 admhc_readl(ahcd, &regs->int_status),
211 next, size);
212 admhc_dump_intr_mask(ahcd, "int_enable",
213 admhc_readl(ahcd, &regs->int_enable),
214 next, size);
215
216 maybe_print_eds(ahcd, "hosthead",
217 admhc_readl(ahcd, &regs->hosthead), next, size);
218 }
219
220 #define dbg_port_sw(hc,num,value,next,size) \
221 admhc_dbg_sw(hc, next, size, \
222 "portstatus [%d] " \
223 "0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \
224 num, temp, \
225 (temp & ADMHC_PS_PRSC) ? " PRSC" : "", \
226 (temp & ADMHC_PS_OCIC) ? " OCIC" : "", \
227 (temp & ADMHC_PS_PSSC) ? " PSSC" : "", \
228 (temp & ADMHC_PS_PESC) ? " PESC" : "", \
229 (temp & ADMHC_PS_CSC) ? " CSC" : "", \
230 \
231 (temp & ADMHC_PS_LSDA) ? " LSDA" : "", \
232 (temp & ADMHC_PS_PPS) ? " PPS" : "", \
233 (temp & ADMHC_PS_PRS) ? " PRS" : "", \
234 (temp & ADMHC_PS_POCI) ? " POCI" : "", \
235 (temp & ADMHC_PS_PSS) ? " PSS" : "", \
236 \
237 (temp & ADMHC_PS_PES) ? " PES" : "", \
238 (temp & ADMHC_PS_CCS) ? " CCS" : "" \
239 );
240
241
242 static void
243 admhc_dump_roothub(
244 struct admhcd *ahcd,
245 int verbose,
246 char **next,
247 unsigned *size)
248 {
249 u32 temp, i;
250
251 temp = admhc_read_rhdesc(ahcd);
252 if (temp == ~(u32)0)
253 return;
254
255 if (verbose) {
256 admhc_dbg_sw(ahcd, next, size,
257 "rhdesc %08x%s%s%s%s%s%s PPCM=%02x%s%s%s%s NUMP=%d(%d)\n",
258 temp,
259 (temp & ADMHC_RH_CRWE) ? " CRWE" : "",
260 (temp & ADMHC_RH_OCIC) ? " OCIC" : "",
261 (temp & ADMHC_RH_LPSC) ? " LPSC" : "",
262 (temp & ADMHC_RH_LPSC) ? " DRWE" : "",
263 (temp & ADMHC_RH_LPSC) ? " OCI" : "",
264 (temp & ADMHC_RH_LPSC) ? " LPS" : "",
265 ((temp & ADMHC_RH_PPCM) >> 16),
266 (temp & ADMHC_RH_NOCP) ? " NOCP" : "",
267 (temp & ADMHC_RH_OCPM) ? " OCPM" : "",
268 (temp & ADMHC_RH_NPS) ? " NPS" : "",
269 (temp & ADMHC_RH_PSM) ? " PSM" : "",
270 (temp & ADMHC_RH_NUMP), ahcd->num_ports
271 );
272 }
273
274 for (i = 0; i < ahcd->num_ports; i++) {
275 temp = admhc_read_portstatus(ahcd, i);
276 dbg_port_sw(ahcd, i, temp, next, size);
277 }
278 }
279
280 static void admhc_dump(struct admhcd *ahcd, int verbose)
281 {
282 admhc_dbg(ahcd, "ADMHC ahcd state\n");
283
284 /* dumps some of the state we know about */
285 admhc_dump_status(ahcd, NULL, NULL);
286 admhc_dbg(ahcd,"current frame #%04x\n",
287 admhc_frame_no(ahcd));
288
289 admhc_dump_roothub(ahcd, verbose, NULL, NULL);
290 }
291
292 static const char data0[] = "DATA0";
293 static const char data1[] = "DATA1";
294
295 static void admhc_dump_td(const struct admhcd *ahcd, const char *label,
296 const struct td *td)
297 {
298 u32 tmp;
299
300 admhc_dbg(ahcd, "%s td %p; urb %p index %d; hwNextTD %08x\n",
301 label, td,
302 td->urb, td->index,
303 hc32_to_cpup(ahcd, &td->hwNextTD));
304
305 tmp = hc32_to_cpup(ahcd, &td->hwINFO);
306 admhc_dbg(ahcd, " status %08x%s CC=%x EC=%d %s %s ISI=%x FN=%x\n",
307 tmp,
308 (tmp & TD_OWN) ? " OWN" : "",
309 TD_CC_GET(tmp),
310 TD_EC_GET(tmp),
311 td_togglestring(tmp),
312 td_pidstring(tmp),
313 TD_ISI_GET(tmp),
314 TD_FN_GET(tmp));
315
316 tmp = hc32_to_cpup(ahcd, &td->hwCBL);
317 admhc_dbg(ahcd, " dbp %08x; cbl %08x; LEN=%d%s\n",
318 hc32_to_cpup(ahcd, &td->hwDBP),
319 tmp,
320 TD_BL_GET(tmp),
321 (tmp & TD_IE) ? " IE" : "");
322 }
323
324 /* caller MUST own hcd spinlock if verbose is set! */
325 static void __attribute__((unused))
326 admhc_dump_ed(const struct admhcd *ahcd, const char *label,
327 const struct ed *ed, int verbose)
328 {
329 u32 tmp = hc32_to_cpu(ahcd, ed->hwINFO);
330
331 admhc_dbg(ahcd, "%s ed %p %s type %s; next ed %08x\n",
332 label,
333 ed, ed_statestring(ed->state), ed_typestring(ed->type),
334 hc32_to_cpup(ahcd, &ed->hwNextED));
335
336 admhc_dbg(ahcd, " info %08x MAX=%d%s%s%s%s EP=%d DEV=%d\n", tmp,
337 ED_MPS_GET(tmp),
338 (tmp & ED_ISO) ? " ISO" : "",
339 (tmp & ED_SKIP) ? " SKIP" : "",
340 (tmp & ED_SPEED_FULL) ? " FULL" : " LOW",
341 (tmp & ED_INT) ? " INT" : "",
342 ED_EN_GET(tmp),
343 ED_FA_GET(tmp));
344
345 tmp = hc32_to_cpup(ahcd, &ed->hwHeadP);
346 admhc_dbg(ahcd, " tds: head %08x tail %08x %s%s%s\n",
347 tmp & TD_MASK,
348 hc32_to_cpup (ahcd, &ed->hwTailP),
349 (tmp & ED_C) ? data1 : data0,
350 (tmp & ED_H) ? " HALT" : "",
351 verbose ? " td list follows" : " (not listing)");
352
353 if (verbose) {
354 struct list_head *tmp;
355
356 /* use ed->td_list because HC concurrently modifies
357 * hwNextTD as it accumulates ed_donelist.
358 */
359 list_for_each(tmp, &ed->td_list) {
360 struct td *td;
361 td = list_entry(tmp, struct td, td_list);
362 admhc_dump_td (ahcd, " ->", td);
363 }
364 }
365 }
366
367 #else /* ifdef DEBUG */
368
369 static inline void urb_print(struct admhcd *ahcd, struct urb * urb, char * str,
370 int small) {}
371 static inline void admhc_dump_ed(const struct admhcd *ahcd, const char *label,
372 const struct ed *ed, int verbose) {}
373 static inline void admhc_dump_td(const struct admhcd *ahcd, const char *label,
374 const struct td *td) {}
375 static inline void admhc_dump(struct admhcd *ahcd, int verbose) {}
376
377 #undef ADMHC_VERBOSE_DEBUG
378
379 #endif /* DEBUG */
380
381 /*-------------------------------------------------------------------------*/
382
383 #ifdef STUB_DEBUG_FILES
384
385 static inline void create_debug_files(struct admhcd *bus) { }
386 static inline void remove_debug_files(struct admhcd *bus) { }
387
388 #else
389
390 static ssize_t
391 show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed)
392 {
393 unsigned temp, size = count;
394
395 if (!ed)
396 return 0;
397
398 /* dump a snapshot of the bulk or control schedule */
399 while (ed) {
400 u32 info = hc32_to_cpu(ahcd, ed->hwINFO);
401 u32 headp = hc32_to_cpu(ahcd, ed->hwHeadP);
402 u32 tailp = hc32_to_cpu(ahcd, ed->hwTailP);
403 struct list_head *entry;
404 struct td *td;
405
406 temp = scnprintf(buf, size,
407 "ed/%p %s %s %cs dev%d ep%d %s%smax %d %08x%s%s %s"
408 " h:%08x t:%08x",
409 ed,
410 ed_statestring(ed->state),
411 ed_typestring (ed->type),
412 (info & ED_SPEED_FULL) ? 'f' : 'l',
413 info & ED_FA_MASK,
414 (info >> ED_EN_SHIFT) & ED_EN_MASK,
415 (info & ED_INT) ? "INT " : "",
416 (info & ED_ISO) ? "ISO " : "",
417 (info >> ED_MPS_SHIFT) & ED_MPS_MASK ,
418 info,
419 (info & ED_SKIP) ? " S" : "",
420 (headp & ED_H) ? " H" : "",
421 (headp & ED_C) ? data1 : data0,
422 headp & ED_MASK,tailp);
423 size -= temp;
424 buf += temp;
425
426 list_for_each(entry, &ed->td_list) {
427 u32 dbp, cbl;
428
429 td = list_entry(entry, struct td, td_list);
430 info = hc32_to_cpup (ahcd, &td->hwINFO);
431 dbp = hc32_to_cpup (ahcd, &td->hwDBP);
432 cbl = hc32_to_cpup (ahcd, &td->hwCBL);
433
434 temp = scnprintf(buf, size,
435 "\n\ttd/%p %s %d %s%scc=%x urb %p (%08x,%08x)",
436 td,
437 td_pidstring(info),
438 TD_BL_GET(cbl),
439 (info & TD_OWN) ? "" : "DONE ",
440 (cbl & TD_IE) ? "IE " : "",
441 TD_CC_GET (info), td->urb, info, cbl);
442 size -= temp;
443 buf += temp;
444 }
445
446 temp = scnprintf(buf, size, "\n");
447 size -= temp;
448 buf += temp;
449
450 ed = ed->ed_next;
451 }
452 return count - size;
453 }
454
455 static ssize_t
456 show_async(struct class_device *class_dev, char *buf)
457 {
458 struct usb_bus *bus;
459 struct usb_hcd *hcd;
460 struct admhcd *ahcd;
461 size_t temp;
462 unsigned long flags;
463
464 bus = class_get_devdata(class_dev);
465 hcd = bus_to_hcd(bus);
466 ahcd = hcd_to_admhcd(hcd);
467
468 /* display control and bulk lists together, for simplicity */
469 spin_lock_irqsave(&ahcd->lock, flags);
470 temp = show_list(ahcd, buf, PAGE_SIZE, ahcd->ed_head);
471 spin_unlock_irqrestore(&ahcd->lock, flags);
472
473 return temp;
474 }
475 static CLASS_DEVICE_ATTR(async, S_IRUGO, show_async, NULL);
476
477
478 #define DBG_SCHED_LIMIT 64
479
480 static ssize_t
481 show_periodic(struct class_device *class_dev, char *buf)
482 {
483 struct usb_bus *bus;
484 struct usb_hcd *hcd;
485 struct admhcd *ahcd;
486 struct ed **seen, *ed;
487 unsigned long flags;
488 unsigned temp, size, seen_count;
489 char *next;
490 unsigned i;
491
492 if (!(seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
493 return 0;
494 seen_count = 0;
495
496 bus = class_get_devdata(class_dev);
497 hcd = bus_to_hcd(bus);
498 ahcd = hcd_to_admhcd(hcd);
499 next = buf;
500 size = PAGE_SIZE;
501
502 temp = scnprintf(next, size, "size = %d\n", NUM_INTS);
503 size -= temp;
504 next += temp;
505
506 /* dump a snapshot of the periodic schedule (and load) */
507 spin_lock_irqsave(&ahcd->lock, flags);
508 for (i = 0; i < NUM_INTS; i++) {
509 if (!(ed = ahcd->periodic [i]))
510 continue;
511
512 temp = scnprintf(next, size, "%2d [%3d]:", i, ahcd->load [i]);
513 size -= temp;
514 next += temp;
515
516 do {
517 temp = scnprintf(next, size, " ed%d/%p",
518 ed->interval, ed);
519 size -= temp;
520 next += temp;
521 for (temp = 0; temp < seen_count; temp++) {
522 if (seen [temp] == ed)
523 break;
524 }
525
526 /* show more info the first time around */
527 if (temp == seen_count) {
528 u32 info = hc32_to_cpu (ahcd, ed->hwINFO);
529 struct list_head *entry;
530 unsigned qlen = 0;
531
532 /* qlen measured here in TDs, not urbs */
533 list_for_each (entry, &ed->td_list)
534 qlen++;
535 temp = scnprintf(next, size,
536 " (%cs dev%d ep%d%s qlen %u"
537 " max %d %08x%s%s)",
538 (info & ED_SPEED_FULL) ? 'f' : 'l',
539 ED_FA_GET(info),
540 ED_EN_GET(info),
541 (info & ED_ISO) ? "iso" : "int",
542 qlen,
543 ED_MPS_GET(info),
544 info,
545 (info & ED_SKIP) ? " K" : "",
546 (ed->hwHeadP &
547 cpu_to_hc32(ahcd, ED_H)) ?
548 " H" : "");
549 size -= temp;
550 next += temp;
551
552 if (seen_count < DBG_SCHED_LIMIT)
553 seen [seen_count++] = ed;
554
555 ed = ed->ed_next;
556
557 } else {
558 /* we've seen it and what's after */
559 temp = 0;
560 ed = NULL;
561 }
562
563 } while (ed);
564
565 temp = scnprintf(next, size, "\n");
566 size -= temp;
567 next += temp;
568 }
569 spin_unlock_irqrestore(&ahcd->lock, flags);
570 kfree (seen);
571
572 return PAGE_SIZE - size;
573 }
574 static CLASS_DEVICE_ATTR(periodic, S_IRUGO, show_periodic, NULL);
575
576
577 #undef DBG_SCHED_LIMIT
578
579 static ssize_t
580 show_registers(struct class_device *class_dev, char *buf)
581 {
582 struct usb_bus *bus;
583 struct usb_hcd *hcd;
584 struct admhcd *ahcd;
585 struct admhcd_regs __iomem *regs;
586 unsigned long flags;
587 unsigned temp, size;
588 char *next;
589 u32 rdata;
590
591 bus = class_get_devdata(class_dev);
592 hcd = bus_to_hcd(bus);
593 ahcd = hcd_to_admhcd(hcd);
594 regs = ahcd->regs;
595 next = buf;
596 size = PAGE_SIZE;
597
598 spin_lock_irqsave(&ahcd->lock, flags);
599
600 /* dump driver info, then registers in spec order */
601
602 admhc_dbg_sw(ahcd, &next, &size,
603 "bus %s, device %s\n"
604 "%s\n"
605 "%s version " DRIVER_VERSION "\n",
606 hcd->self.controller->bus->name,
607 hcd->self.controller->bus_id,
608 hcd->product_desc,
609 hcd_name);
610
611 if (bus->controller->power.power_state.event) {
612 size -= scnprintf(next, size,
613 "SUSPENDED (no register access)\n");
614 goto done;
615 }
616
617 admhc_dump_status(ahcd, &next, &size);
618
619 /* other registers mostly affect frame timings */
620 rdata = admhc_readl(ahcd, &regs->fminterval);
621 temp = scnprintf(next, size,
622 "fmintvl 0x%08x %sFSLDP=0x%04x FI=0x%04x\n",
623 rdata, (rdata & ADMHC_SFI_FIT) ? "FIT " : "",
624 (rdata >> ADMHC_SFI_FSLDP_SHIFT) & ADMHC_SFI_FSLDP_MASK,
625 rdata & ADMHC_SFI_FI_MASK);
626 size -= temp;
627 next += temp;
628
629 rdata = admhc_readl(ahcd, &regs->fmnumber);
630 temp = scnprintf(next, size, "fmnumber 0x%08x %sFR=0x%04x FN=%04x\n",
631 rdata, (rdata & ADMHC_SFN_FRT) ? "FRT " : "",
632 (rdata >> ADMHC_SFN_FR_SHIFT) & ADMHC_SFN_FR_MASK,
633 rdata & ADMHC_SFN_FN_MASK);
634 size -= temp;
635 next += temp;
636
637 /* TODO: use predefined bitmask */
638 rdata = admhc_readl(ahcd, &regs->lsthresh);
639 temp = scnprintf(next, size, "lsthresh 0x%04x\n",
640 rdata & 0x3fff);
641 size -= temp;
642 next += temp;
643
644 temp = scnprintf(next, size, "hub poll timer: %s\n",
645 admhcd_to_hcd(ahcd)->poll_rh ? "ON" : "OFF");
646 size -= temp;
647 next += temp;
648
649 /* roothub */
650 admhc_dump_roothub(ahcd, 1, &next, &size);
651
652 done:
653 spin_unlock_irqrestore(&ahcd->lock, flags);
654 return PAGE_SIZE - size;
655 }
656 static CLASS_DEVICE_ATTR(registers, S_IRUGO, show_registers, NULL);
657
658
659 static inline void create_debug_files (struct admhcd *ahcd)
660 {
661 struct class_device *cldev = admhcd_to_hcd(ahcd)->self.class_dev;
662 int retval;
663
664 retval = class_device_create_file(cldev, &class_device_attr_async);
665 retval = class_device_create_file(cldev, &class_device_attr_periodic);
666 retval = class_device_create_file(cldev, &class_device_attr_registers);
667 admhc_dbg(ahcd, "created debug files\n");
668 }
669
670 static inline void remove_debug_files (struct admhcd *ahcd)
671 {
672 struct class_device *cldev = admhcd_to_hcd(ahcd)->self.class_dev;
673
674 class_device_remove_file(cldev, &class_device_attr_async);
675 class_device_remove_file(cldev, &class_device_attr_periodic);
676 class_device_remove_file(cldev, &class_device_attr_registers);
677 }
678
679 #endif
680
681 /*-------------------------------------------------------------------------*/
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