USB: ohci whitespace/comment fixups
[linux-2.6.git] / drivers / usb / host / ohci-dbg.c
1 /*
2  * OHCI HCD (Host Controller Driver) for USB.
3  *
4  * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
5  * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
6  *
7  * This file is licenced under the GPL.
8  */
9
10 /*-------------------------------------------------------------------------*/
11
12 #ifdef DEBUG
13
14 #define edstring(ed_type) ({ char *temp; \
15         switch (ed_type) { \
16         case PIPE_CONTROL:      temp = "ctrl"; break; \
17         case PIPE_BULK:         temp = "bulk"; break; \
18         case PIPE_INTERRUPT:    temp = "intr"; break; \
19         default:                temp = "isoc"; break; \
20         }; temp;})
21 #define pipestring(pipe) edstring(usb_pipetype(pipe))
22
23 /* debug| print the main components of an URB
24  * small: 0) header + data packets 1) just header
25  */
26 static void __attribute__((unused))
27 urb_print (struct urb * urb, char * str, int small)
28 {
29         unsigned int pipe= urb->pipe;
30
31         if (!urb->dev || !urb->dev->bus) {
32                 dbg("%s URB: no dev", str);
33                 return;
34         }
35
36 #ifndef OHCI_VERBOSE_DEBUG
37         if (urb->status != 0)
38 #endif
39         dbg("%s %p dev=%d ep=%d%s-%s flags=%x len=%d/%d stat=%d",
40                     str,
41                     urb,
42                     usb_pipedevice (pipe),
43                     usb_pipeendpoint (pipe),
44                     usb_pipeout (pipe)? "out" : "in",
45                     pipestring (pipe),
46                     urb->transfer_flags,
47                     urb->actual_length,
48                     urb->transfer_buffer_length,
49                     urb->status);
50
51 #ifdef  OHCI_VERBOSE_DEBUG
52         if (!small) {
53                 int i, len;
54
55                 if (usb_pipecontrol (pipe)) {
56                         printk (KERN_DEBUG __FILE__ ": setup(8):");
57                         for (i = 0; i < 8 ; i++)
58                                 printk (" %02x", ((__u8 *) urb->setup_packet) [i]);
59                         printk ("\n");
60                 }
61                 if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) {
62                         printk (KERN_DEBUG __FILE__ ": data(%d/%d):",
63                                 urb->actual_length,
64                                 urb->transfer_buffer_length);
65                         len = usb_pipeout (pipe)?
66                                                 urb->transfer_buffer_length: urb->actual_length;
67                         for (i = 0; i < 16 && i < len; i++)
68                                 printk (" %02x", ((__u8 *) urb->transfer_buffer) [i]);
69                         printk ("%s stat:%d\n", i < len? "...": "", urb->status);
70                 }
71         }
72 #endif
73 }
74
75 #define ohci_dbg_sw(ohci, next, size, format, arg...) \
76         do { \
77         if (next) { \
78                 unsigned s_len; \
79                 s_len = scnprintf (*next, *size, format, ## arg ); \
80                 *size -= s_len; *next += s_len; \
81         } else \
82                 ohci_dbg(ohci,format, ## arg ); \
83         } while (0);
84
85
86 static void ohci_dump_intr_mask (
87         struct ohci_hcd *ohci,
88         char *label,
89         u32 mask,
90         char **next,
91         unsigned *size)
92 {
93         ohci_dbg_sw (ohci, next, size, "%s 0x%08x%s%s%s%s%s%s%s%s%s\n",
94                 label,
95                 mask,
96                 (mask & OHCI_INTR_MIE) ? " MIE" : "",
97                 (mask & OHCI_INTR_OC) ? " OC" : "",
98                 (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
99                 (mask & OHCI_INTR_FNO) ? " FNO" : "",
100                 (mask & OHCI_INTR_UE) ? " UE" : "",
101                 (mask & OHCI_INTR_RD) ? " RD" : "",
102                 (mask & OHCI_INTR_SF) ? " SF" : "",
103                 (mask & OHCI_INTR_WDH) ? " WDH" : "",
104                 (mask & OHCI_INTR_SO) ? " SO" : ""
105                 );
106 }
107
108 static void maybe_print_eds (
109         struct ohci_hcd *ohci,
110         char *label,
111         u32 value,
112         char **next,
113         unsigned *size)
114 {
115         if (value)
116                 ohci_dbg_sw (ohci, next, size, "%s %08x\n", label, value);
117 }
118
119 static char *hcfs2string (int state)
120 {
121         switch (state) {
122                 case OHCI_USB_RESET:    return "reset";
123                 case OHCI_USB_RESUME:   return "resume";
124                 case OHCI_USB_OPER:     return "operational";
125                 case OHCI_USB_SUSPEND:  return "suspend";
126         }
127         return "?";
128 }
129
130 // dump control and status registers
131 static void
132 ohci_dump_status (struct ohci_hcd *controller, char **next, unsigned *size)
133 {
134         struct ohci_regs __iomem *regs = controller->regs;
135         u32                     temp;
136
137         temp = ohci_readl (controller, &regs->revision) & 0xff;
138         ohci_dbg_sw (controller, next, size,
139                 "OHCI %d.%d, %s legacy support registers\n",
140                 0x03 & (temp >> 4), (temp & 0x0f),
141                 (temp & 0x0100) ? "with" : "NO");
142
143         temp = ohci_readl (controller, &regs->control);
144         ohci_dbg_sw (controller, next, size,
145                 "control 0x%03x%s%s%s HCFS=%s%s%s%s%s CBSR=%d\n",
146                 temp,
147                 (temp & OHCI_CTRL_RWE) ? " RWE" : "",
148                 (temp & OHCI_CTRL_RWC) ? " RWC" : "",
149                 (temp & OHCI_CTRL_IR) ? " IR" : "",
150                 hcfs2string (temp & OHCI_CTRL_HCFS),
151                 (temp & OHCI_CTRL_BLE) ? " BLE" : "",
152                 (temp & OHCI_CTRL_CLE) ? " CLE" : "",
153                 (temp & OHCI_CTRL_IE) ? " IE" : "",
154                 (temp & OHCI_CTRL_PLE) ? " PLE" : "",
155                 temp & OHCI_CTRL_CBSR
156                 );
157
158         temp = ohci_readl (controller, &regs->cmdstatus);
159         ohci_dbg_sw (controller, next, size,
160                 "cmdstatus 0x%05x SOC=%d%s%s%s%s\n", temp,
161                 (temp & OHCI_SOC) >> 16,
162                 (temp & OHCI_OCR) ? " OCR" : "",
163                 (temp & OHCI_BLF) ? " BLF" : "",
164                 (temp & OHCI_CLF) ? " CLF" : "",
165                 (temp & OHCI_HCR) ? " HCR" : ""
166                 );
167
168         ohci_dump_intr_mask (controller, "intrstatus",
169                         ohci_readl (controller, &regs->intrstatus),
170                         next, size);
171         ohci_dump_intr_mask (controller, "intrenable",
172                         ohci_readl (controller, &regs->intrenable),
173                         next, size);
174         // intrdisable always same as intrenable
175
176         maybe_print_eds (controller, "ed_periodcurrent",
177                         ohci_readl (controller, &regs->ed_periodcurrent),
178                         next, size);
179
180         maybe_print_eds (controller, "ed_controlhead",
181                         ohci_readl (controller, &regs->ed_controlhead),
182                         next, size);
183         maybe_print_eds (controller, "ed_controlcurrent",
184                         ohci_readl (controller, &regs->ed_controlcurrent),
185                         next, size);
186
187         maybe_print_eds (controller, "ed_bulkhead",
188                         ohci_readl (controller, &regs->ed_bulkhead),
189                         next, size);
190         maybe_print_eds (controller, "ed_bulkcurrent",
191                         ohci_readl (controller, &regs->ed_bulkcurrent),
192                         next, size);
193
194         maybe_print_eds (controller, "donehead",
195                         ohci_readl (controller, &regs->donehead), next, size);
196 }
197
198 #define dbg_port_sw(hc,num,value,next,size) \
199         ohci_dbg_sw (hc, next, size, \
200                 "roothub.portstatus [%d] " \
201                 "0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \
202                 num, temp, \
203                 (temp & RH_PS_PRSC) ? " PRSC" : "", \
204                 (temp & RH_PS_OCIC) ? " OCIC" : "", \
205                 (temp & RH_PS_PSSC) ? " PSSC" : "", \
206                 (temp & RH_PS_PESC) ? " PESC" : "", \
207                 (temp & RH_PS_CSC) ? " CSC" : "", \
208                 \
209                 (temp & RH_PS_LSDA) ? " LSDA" : "", \
210                 (temp & RH_PS_PPS) ? " PPS" : "", \
211                 (temp & RH_PS_PRS) ? " PRS" : "", \
212                 (temp & RH_PS_POCI) ? " POCI" : "", \
213                 (temp & RH_PS_PSS) ? " PSS" : "", \
214                 \
215                 (temp & RH_PS_PES) ? " PES" : "", \
216                 (temp & RH_PS_CCS) ? " CCS" : "" \
217                 );
218
219
220 static void
221 ohci_dump_roothub (
222         struct ohci_hcd *controller,
223         int verbose,
224         char **next,
225         unsigned *size)
226 {
227         u32                     temp, i;
228
229         temp = roothub_a (controller);
230         if (temp == ~(u32)0)
231                 return;
232
233         if (verbose) {
234                 ohci_dbg_sw (controller, next, size,
235                         "roothub.a %08x POTPGT=%d%s%s%s%s%s NDP=%d(%d)\n", temp,
236                         ((temp & RH_A_POTPGT) >> 24) & 0xff,
237                         (temp & RH_A_NOCP) ? " NOCP" : "",
238                         (temp & RH_A_OCPM) ? " OCPM" : "",
239                         (temp & RH_A_DT) ? " DT" : "",
240                         (temp & RH_A_NPS) ? " NPS" : "",
241                         (temp & RH_A_PSM) ? " PSM" : "",
242                         (temp & RH_A_NDP), controller->num_ports
243                         );
244                 temp = roothub_b (controller);
245                 ohci_dbg_sw (controller, next, size,
246                         "roothub.b %08x PPCM=%04x DR=%04x\n",
247                         temp,
248                         (temp & RH_B_PPCM) >> 16,
249                         (temp & RH_B_DR)
250                         );
251                 temp = roothub_status (controller);
252                 ohci_dbg_sw (controller, next, size,
253                         "roothub.status %08x%s%s%s%s%s%s\n",
254                         temp,
255                         (temp & RH_HS_CRWE) ? " CRWE" : "",
256                         (temp & RH_HS_OCIC) ? " OCIC" : "",
257                         (temp & RH_HS_LPSC) ? " LPSC" : "",
258                         (temp & RH_HS_DRWE) ? " DRWE" : "",
259                         (temp & RH_HS_OCI) ? " OCI" : "",
260                         (temp & RH_HS_LPS) ? " LPS" : ""
261                         );
262         }
263
264         for (i = 0; i < controller->num_ports; i++) {
265                 temp = roothub_portstatus (controller, i);
266                 dbg_port_sw (controller, i, temp, next, size);
267         }
268 }
269
270 static void ohci_dump (struct ohci_hcd *controller, int verbose)
271 {
272         ohci_dbg (controller, "OHCI controller state\n");
273
274         // dumps some of the state we know about
275         ohci_dump_status (controller, NULL, NULL);
276         if (controller->hcca)
277                 ohci_dbg (controller,
278                         "hcca frame #%04x\n", ohci_frame_no(controller));
279         ohci_dump_roothub (controller, 1, NULL, NULL);
280 }
281
282 static const char data0 [] = "DATA0";
283 static const char data1 [] = "DATA1";
284
285 static void ohci_dump_td (const struct ohci_hcd *ohci, const char *label,
286                 const struct td *td)
287 {
288         u32     tmp = hc32_to_cpup (ohci, &td->hwINFO);
289
290         ohci_dbg (ohci, "%s td %p%s; urb %p index %d; hw next td %08x\n",
291                 label, td,
292                 (tmp & TD_DONE) ? " (DONE)" : "",
293                 td->urb, td->index,
294                 hc32_to_cpup (ohci, &td->hwNextTD));
295         if ((tmp & TD_ISO) == 0) {
296                 const char      *toggle, *pid;
297                 u32     cbp, be;
298
299                 switch (tmp & TD_T) {
300                 case TD_T_DATA0: toggle = data0; break;
301                 case TD_T_DATA1: toggle = data1; break;
302                 case TD_T_TOGGLE: toggle = "(CARRY)"; break;
303                 default: toggle = "(?)"; break;
304                 }
305                 switch (tmp & TD_DP) {
306                 case TD_DP_SETUP: pid = "SETUP"; break;
307                 case TD_DP_IN: pid = "IN"; break;
308                 case TD_DP_OUT: pid = "OUT"; break;
309                 default: pid = "(bad pid)"; break;
310                 }
311                 ohci_dbg (ohci, "     info %08x CC=%x %s DI=%d %s %s\n", tmp,
312                         TD_CC_GET(tmp), /* EC, */ toggle,
313                         (tmp & TD_DI) >> 21, pid,
314                         (tmp & TD_R) ? "R" : "");
315                 cbp = hc32_to_cpup (ohci, &td->hwCBP);
316                 be = hc32_to_cpup (ohci, &td->hwBE);
317                 ohci_dbg (ohci, "     cbp %08x be %08x (len %d)\n", cbp, be,
318                         cbp ? (be + 1 - cbp) : 0);
319         } else {
320                 unsigned        i;
321                 ohci_dbg (ohci, "  info %08x CC=%x FC=%d DI=%d SF=%04x\n", tmp,
322                         TD_CC_GET(tmp),
323                         (tmp >> 24) & 0x07,
324                         (tmp & TD_DI) >> 21,
325                         tmp & 0x0000ffff);
326                 ohci_dbg (ohci, "  bp0 %08x be %08x\n",
327                         hc32_to_cpup (ohci, &td->hwCBP) & ~0x0fff,
328                         hc32_to_cpup (ohci, &td->hwBE));
329                 for (i = 0; i < MAXPSW; i++) {
330                         u16     psw = ohci_hwPSW (ohci, td, i);
331                         int     cc = (psw >> 12) & 0x0f;
332                         ohci_dbg (ohci, "    psw [%d] = %2x, CC=%x %s=%d\n", i,
333                                 psw, cc,
334                                 (cc >= 0x0e) ? "OFFSET" : "SIZE",
335                                 psw & 0x0fff);
336                 }
337         }
338 }
339
340 /* caller MUST own hcd spinlock if verbose is set! */
341 static void __attribute__((unused))
342 ohci_dump_ed (const struct ohci_hcd *ohci, const char *label,
343                 const struct ed *ed, int verbose)
344 {
345         u32     tmp = hc32_to_cpu (ohci, ed->hwINFO);
346         char    *type = "";
347
348         ohci_dbg (ohci, "%s, ed %p state 0x%x type %s; next ed %08x\n",
349                 label,
350                 ed, ed->state, edstring (ed->type),
351                 hc32_to_cpup (ohci, &ed->hwNextED));
352         switch (tmp & (ED_IN|ED_OUT)) {
353         case ED_OUT: type = "-OUT"; break;
354         case ED_IN: type = "-IN"; break;
355         /* else from TDs ... control */
356         }
357         ohci_dbg (ohci,
358                 "  info %08x MAX=%d%s%s%s%s EP=%d%s DEV=%d\n", tmp,
359                 0x03ff & (tmp >> 16),
360                 (tmp & ED_DEQUEUE) ? " DQ" : "",
361                 (tmp & ED_ISO) ? " ISO" : "",
362                 (tmp & ED_SKIP) ? " SKIP" : "",
363                 (tmp & ED_LOWSPEED) ? " LOW" : "",
364                 0x000f & (tmp >> 7),
365                 type,
366                 0x007f & tmp);
367         tmp = hc32_to_cpup (ohci, &ed->hwHeadP);
368         ohci_dbg (ohci, "  tds: head %08x %s%s tail %08x%s\n",
369                 tmp,
370                 (tmp & ED_C) ? data1 : data0,
371                 (tmp & ED_H) ? " HALT" : "",
372                 hc32_to_cpup (ohci, &ed->hwTailP),
373                 verbose ? "" : " (not listing)");
374         if (verbose) {
375                 struct list_head        *tmp;
376
377                 /* use ed->td_list because HC concurrently modifies
378                  * hwNextTD as it accumulates ed_donelist.
379                  */
380                 list_for_each (tmp, &ed->td_list) {
381                         struct td               *td;
382                         td = list_entry (tmp, struct td, td_list);
383                         ohci_dump_td (ohci, "  ->", td);
384                 }
385         }
386 }
387
388 #else
389 static inline void ohci_dump (struct ohci_hcd *controller, int verbose) {}
390
391 #undef OHCI_VERBOSE_DEBUG
392
393 #endif /* DEBUG */
394
395 /*-------------------------------------------------------------------------*/
396
397 #ifdef STUB_DEBUG_FILES
398
399 static inline void create_debug_files (struct ohci_hcd *bus) { }
400 static inline void remove_debug_files (struct ohci_hcd *bus) { }
401
402 #else
403
404 static ssize_t
405 show_list (struct ohci_hcd *ohci, char *buf, size_t count, struct ed *ed)
406 {
407         unsigned                temp, size = count;
408
409         if (!ed)
410                 return 0;
411
412         /* print first --> last */
413         while (ed->ed_prev)
414                 ed = ed->ed_prev;
415
416         /* dump a snapshot of the bulk or control schedule */
417         while (ed) {
418                 u32             info = hc32_to_cpu (ohci, ed->hwINFO);
419                 u32             headp = hc32_to_cpu (ohci, ed->hwHeadP);
420                 struct list_head *entry;
421                 struct td       *td;
422
423                 temp = scnprintf (buf, size,
424                         "ed/%p %cs dev%d ep%d%s max %d %08x%s%s %s",
425                         ed,
426                         (info & ED_LOWSPEED) ? 'l' : 'f',
427                         info & 0x7f,
428                         (info >> 7) & 0xf,
429                         (info & ED_IN) ? "in" : "out",
430                         0x03ff & (info >> 16),
431                         info,
432                         (info & ED_SKIP) ? " s" : "",
433                         (headp & ED_H) ? " H" : "",
434                         (headp & ED_C) ? data1 : data0);
435                 size -= temp;
436                 buf += temp;
437
438                 list_for_each (entry, &ed->td_list) {
439                         u32             cbp, be;
440
441                         td = list_entry (entry, struct td, td_list);
442                         info = hc32_to_cpup (ohci, &td->hwINFO);
443                         cbp = hc32_to_cpup (ohci, &td->hwCBP);
444                         be = hc32_to_cpup (ohci, &td->hwBE);
445                         temp = scnprintf (buf, size,
446                                         "\n\ttd %p %s %d cc=%x urb %p (%08x)",
447                                         td,
448                                         ({ char *pid;
449                                         switch (info & TD_DP) {
450                                         case TD_DP_SETUP: pid = "setup"; break;
451                                         case TD_DP_IN: pid = "in"; break;
452                                         case TD_DP_OUT: pid = "out"; break;
453                                         default: pid = "(?)"; break;
454                                          } pid;}),
455                                         cbp ? (be + 1 - cbp) : 0,
456                                         TD_CC_GET (info), td->urb, info);
457                         size -= temp;
458                         buf += temp;
459                 }
460
461                 temp = scnprintf (buf, size, "\n");
462                 size -= temp;
463                 buf += temp;
464
465                 ed = ed->ed_next;
466         }
467         return count - size;
468 }
469
470 static ssize_t
471 show_async (struct class_device *class_dev, char *buf)
472 {
473         struct usb_bus          *bus;
474         struct usb_hcd          *hcd;
475         struct ohci_hcd         *ohci;
476         size_t                  temp;
477         unsigned long           flags;
478
479         bus = class_get_devdata(class_dev);
480         hcd = bus_to_hcd(bus);
481         ohci = hcd_to_ohci(hcd);
482
483         /* display control and bulk lists together, for simplicity */
484         spin_lock_irqsave (&ohci->lock, flags);
485         temp = show_list (ohci, buf, PAGE_SIZE, ohci->ed_controltail);
486         temp += show_list (ohci, buf + temp, PAGE_SIZE - temp, ohci->ed_bulktail);
487         spin_unlock_irqrestore (&ohci->lock, flags);
488
489         return temp;
490 }
491 static CLASS_DEVICE_ATTR (async, S_IRUGO, show_async, NULL);
492
493
494 #define DBG_SCHED_LIMIT 64
495
496 static ssize_t
497 show_periodic (struct class_device *class_dev, char *buf)
498 {
499         struct usb_bus          *bus;
500         struct usb_hcd          *hcd;
501         struct ohci_hcd         *ohci;
502         struct ed               **seen, *ed;
503         unsigned long           flags;
504         unsigned                temp, size, seen_count;
505         char                    *next;
506         unsigned                i;
507
508         if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
509                 return 0;
510         seen_count = 0;
511
512         bus = class_get_devdata(class_dev);
513         hcd = bus_to_hcd(bus);
514         ohci = hcd_to_ohci(hcd);
515         next = buf;
516         size = PAGE_SIZE;
517
518         temp = scnprintf (next, size, "size = %d\n", NUM_INTS);
519         size -= temp;
520         next += temp;
521
522         /* dump a snapshot of the periodic schedule (and load) */
523         spin_lock_irqsave (&ohci->lock, flags);
524         for (i = 0; i < NUM_INTS; i++) {
525                 if (!(ed = ohci->periodic [i]))
526                         continue;
527
528                 temp = scnprintf (next, size, "%2d [%3d]:", i, ohci->load [i]);
529                 size -= temp;
530                 next += temp;
531
532                 do {
533                         temp = scnprintf (next, size, " ed%d/%p",
534                                 ed->interval, ed);
535                         size -= temp;
536                         next += temp;
537                         for (temp = 0; temp < seen_count; temp++) {
538                                 if (seen [temp] == ed)
539                                         break;
540                         }
541
542                         /* show more info the first time around */
543                         if (temp == seen_count) {
544                                 u32     info = hc32_to_cpu (ohci, ed->hwINFO);
545                                 struct list_head        *entry;
546                                 unsigned                qlen = 0;
547
548                                 /* qlen measured here in TDs, not urbs */
549                                 list_for_each (entry, &ed->td_list)
550                                         qlen++;
551
552                                 temp = scnprintf (next, size,
553                                         " (%cs dev%d ep%d%s-%s qlen %u"
554                                         " max %d %08x%s%s)",
555                                         (info & ED_LOWSPEED) ? 'l' : 'f',
556                                         info & 0x7f,
557                                         (info >> 7) & 0xf,
558                                         (info & ED_IN) ? "in" : "out",
559                                         (info & ED_ISO) ? "iso" : "int",
560                                         qlen,
561                                         0x03ff & (info >> 16),
562                                         info,
563                                         (info & ED_SKIP) ? " K" : "",
564                                         (ed->hwHeadP &
565                                                 cpu_to_hc32(ohci, ED_H)) ?
566                                                         " H" : "");
567                                 size -= temp;
568                                 next += temp;
569
570                                 if (seen_count < DBG_SCHED_LIMIT)
571                                         seen [seen_count++] = ed;
572
573                                 ed = ed->ed_next;
574
575                         } else {
576                                 /* we've seen it and what's after */
577                                 temp = 0;
578                                 ed = NULL;
579                         }
580
581                 } while (ed);
582
583                 temp = scnprintf (next, size, "\n");
584                 size -= temp;
585                 next += temp;
586         }
587         spin_unlock_irqrestore (&ohci->lock, flags);
588         kfree (seen);
589
590         return PAGE_SIZE - size;
591 }
592 static CLASS_DEVICE_ATTR (periodic, S_IRUGO, show_periodic, NULL);
593
594
595 #undef DBG_SCHED_LIMIT
596
597 static ssize_t
598 show_registers (struct class_device *class_dev, char *buf)
599 {
600         struct usb_bus          *bus;
601         struct usb_hcd          *hcd;
602         struct ohci_hcd         *ohci;
603         struct ohci_regs __iomem *regs;
604         unsigned long           flags;
605         unsigned                temp, size;
606         char                    *next;
607         u32                     rdata;
608
609         bus = class_get_devdata(class_dev);
610         hcd = bus_to_hcd(bus);
611         ohci = hcd_to_ohci(hcd);
612         regs = ohci->regs;
613         next = buf;
614         size = PAGE_SIZE;
615
616         spin_lock_irqsave (&ohci->lock, flags);
617
618         /* dump driver info, then registers in spec order */
619
620         ohci_dbg_sw (ohci, &next, &size,
621                 "bus %s, device %s\n"
622                 "%s\n"
623                 "%s version " DRIVER_VERSION "\n",
624                 hcd->self.controller->bus->name,
625                 hcd->self.controller->bus_id,
626                 hcd->product_desc,
627                 hcd_name);
628
629         if (bus->controller->power.power_state.event) {
630                 size -= scnprintf (next, size,
631                         "SUSPENDED (no register access)\n");
632                 goto done;
633         }
634
635         ohci_dump_status(ohci, &next, &size);
636
637         /* hcca */
638         if (ohci->hcca)
639                 ohci_dbg_sw (ohci, &next, &size,
640                         "hcca frame 0x%04x\n", ohci_frame_no(ohci));
641
642         /* other registers mostly affect frame timings */
643         rdata = ohci_readl (ohci, &regs->fminterval);
644         temp = scnprintf (next, size,
645                         "fmintvl 0x%08x %sFSMPS=0x%04x FI=0x%04x\n",
646                         rdata, (rdata >> 31) ? "FIT " : "",
647                         (rdata >> 16) & 0xefff, rdata & 0xffff);
648         size -= temp;
649         next += temp;
650
651         rdata = ohci_readl (ohci, &regs->fmremaining);
652         temp = scnprintf (next, size, "fmremaining 0x%08x %sFR=0x%04x\n",
653                         rdata, (rdata >> 31) ? "FRT " : "",
654                         rdata & 0x3fff);
655         size -= temp;
656         next += temp;
657
658         rdata = ohci_readl (ohci, &regs->periodicstart);
659         temp = scnprintf (next, size, "periodicstart 0x%04x\n",
660                         rdata & 0x3fff);
661         size -= temp;
662         next += temp;
663
664         rdata = ohci_readl (ohci, &regs->lsthresh);
665         temp = scnprintf (next, size, "lsthresh 0x%04x\n",
666                         rdata & 0x3fff);
667         size -= temp;
668         next += temp;
669
670         temp = scnprintf (next, size, "hub poll timer %s\n",
671                         ohci_to_hcd(ohci)->poll_rh ? "ON" : "off");
672         size -= temp;
673         next += temp;
674
675         /* roothub */
676         ohci_dump_roothub (ohci, 1, &next, &size);
677
678 done:
679         spin_unlock_irqrestore (&ohci->lock, flags);
680         return PAGE_SIZE - size;
681 }
682 static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
683
684
685 static inline void create_debug_files (struct ohci_hcd *ohci)
686 {
687         struct class_device *cldev = ohci_to_hcd(ohci)->self.class_dev;
688         int retval;
689
690         retval = class_device_create_file(cldev, &class_device_attr_async);
691         retval = class_device_create_file(cldev, &class_device_attr_periodic);
692         retval = class_device_create_file(cldev, &class_device_attr_registers);
693         ohci_dbg (ohci, "created debug files\n");
694 }
695
696 static inline void remove_debug_files (struct ohci_hcd *ohci)
697 {
698         struct class_device *cldev = ohci_to_hcd(ohci)->self.class_dev;
699
700         class_device_remove_file(cldev, &class_device_attr_async);
701         class_device_remove_file(cldev, &class_device_attr_periodic);
702         class_device_remove_file(cldev, &class_device_attr_registers);
703 }
704
705 #endif
706
707 /*-------------------------------------------------------------------------*/
708