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Commit | Line | Data |
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1da177e4 LT |
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, ®s->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, ®s->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, ®s->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, ®s->intrstatus), | |
170 | next, size); | |
171 | ohci_dump_intr_mask (controller, "intrenable", | |
172 | ohci_readl (controller, ®s->intrenable), | |
173 | next, size); | |
174 | // intrdisable always same as intrenable | |
175 | ||
176 | maybe_print_eds (controller, "ed_periodcurrent", | |
177 | ohci_readl (controller, ®s->ed_periodcurrent), | |
178 | next, size); | |
179 | ||
180 | maybe_print_eds (controller, "ed_controlhead", | |
181 | ohci_readl (controller, ®s->ed_controlhead), | |
182 | next, size); | |
183 | maybe_print_eds (controller, "ed_controlcurrent", | |
184 | ohci_readl (controller, ®s->ed_controlcurrent), | |
185 | next, size); | |
186 | ||
187 | maybe_print_eds (controller, "ed_bulkhead", | |
188 | ohci_readl (controller, ®s->ed_bulkhead), | |
189 | next, size); | |
190 | maybe_print_eds (controller, "ed_bulkcurrent", | |
191 | ohci_readl (controller, ®s->ed_bulkcurrent), | |
192 | next, size); | |
193 | ||
194 | maybe_print_eds (controller, "donehead", | |
195 | ohci_readl (controller, ®s->donehead), next, size); | |
196 | ||
197 | /* broken fminterval means traffic won't flow! */ | |
198 | ohci_dbg (controller, "fminterval %08x\n", | |
199 | ohci_readl (controller, ®s->fminterval)); | |
200 | } | |
201 | ||
202 | #define dbg_port_sw(hc,num,value,next,size) \ | |
203 | ohci_dbg_sw (hc, next, size, \ | |
204 | "roothub.portstatus [%d] " \ | |
205 | "0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \ | |
206 | num, temp, \ | |
207 | (temp & RH_PS_PRSC) ? " PRSC" : "", \ | |
208 | (temp & RH_PS_OCIC) ? " OCIC" : "", \ | |
209 | (temp & RH_PS_PSSC) ? " PSSC" : "", \ | |
210 | (temp & RH_PS_PESC) ? " PESC" : "", \ | |
211 | (temp & RH_PS_CSC) ? " CSC" : "", \ | |
212 | \ | |
213 | (temp & RH_PS_LSDA) ? " LSDA" : "", \ | |
214 | (temp & RH_PS_PPS) ? " PPS" : "", \ | |
215 | (temp & RH_PS_PRS) ? " PRS" : "", \ | |
216 | (temp & RH_PS_POCI) ? " POCI" : "", \ | |
217 | (temp & RH_PS_PSS) ? " PSS" : "", \ | |
218 | \ | |
219 | (temp & RH_PS_PES) ? " PES" : "", \ | |
220 | (temp & RH_PS_CCS) ? " CCS" : "" \ | |
221 | ); | |
222 | ||
223 | ||
224 | static void | |
225 | ohci_dump_roothub ( | |
226 | struct ohci_hcd *controller, | |
227 | int verbose, | |
228 | char **next, | |
229 | unsigned *size) | |
230 | { | |
231 | u32 temp, ndp, i; | |
232 | ||
233 | temp = roothub_a (controller); | |
234 | if (temp == ~(u32)0) | |
235 | return; | |
236 | ndp = (temp & RH_A_NDP); | |
237 | ||
238 | if (verbose) { | |
239 | ohci_dbg_sw (controller, next, size, | |
240 | "roothub.a %08x POTPGT=%d%s%s%s%s%s NDP=%d\n", temp, | |
241 | ((temp & RH_A_POTPGT) >> 24) & 0xff, | |
242 | (temp & RH_A_NOCP) ? " NOCP" : "", | |
243 | (temp & RH_A_OCPM) ? " OCPM" : "", | |
244 | (temp & RH_A_DT) ? " DT" : "", | |
245 | (temp & RH_A_NPS) ? " NPS" : "", | |
246 | (temp & RH_A_PSM) ? " PSM" : "", | |
247 | ndp | |
248 | ); | |
249 | temp = roothub_b (controller); | |
250 | ohci_dbg_sw (controller, next, size, | |
251 | "roothub.b %08x PPCM=%04x DR=%04x\n", | |
252 | temp, | |
253 | (temp & RH_B_PPCM) >> 16, | |
254 | (temp & RH_B_DR) | |
255 | ); | |
256 | temp = roothub_status (controller); | |
257 | ohci_dbg_sw (controller, next, size, | |
258 | "roothub.status %08x%s%s%s%s%s%s\n", | |
259 | temp, | |
260 | (temp & RH_HS_CRWE) ? " CRWE" : "", | |
261 | (temp & RH_HS_OCIC) ? " OCIC" : "", | |
262 | (temp & RH_HS_LPSC) ? " LPSC" : "", | |
263 | (temp & RH_HS_DRWE) ? " DRWE" : "", | |
264 | (temp & RH_HS_OCI) ? " OCI" : "", | |
265 | (temp & RH_HS_LPS) ? " LPS" : "" | |
266 | ); | |
267 | } | |
268 | ||
269 | for (i = 0; i < ndp; i++) { | |
270 | temp = roothub_portstatus (controller, i); | |
271 | dbg_port_sw (controller, i, temp, next, size); | |
272 | } | |
273 | } | |
274 | ||
275 | static void ohci_dump (struct ohci_hcd *controller, int verbose) | |
276 | { | |
277 | ohci_dbg (controller, "OHCI controller state\n"); | |
278 | ||
279 | // dumps some of the state we know about | |
280 | ohci_dump_status (controller, NULL, NULL); | |
281 | if (controller->hcca) | |
282 | ohci_dbg (controller, | |
283 | "hcca frame #%04x\n", ohci_frame_no(controller)); | |
284 | ohci_dump_roothub (controller, 1, NULL, NULL); | |
285 | } | |
286 | ||
287 | static const char data0 [] = "DATA0"; | |
288 | static const char data1 [] = "DATA1"; | |
289 | ||
290 | static void ohci_dump_td (const struct ohci_hcd *ohci, const char *label, | |
291 | const struct td *td) | |
292 | { | |
293 | u32 tmp = hc32_to_cpup (ohci, &td->hwINFO); | |
294 | ||
295 | ohci_dbg (ohci, "%s td %p%s; urb %p index %d; hw next td %08x\n", | |
296 | label, td, | |
297 | (tmp & TD_DONE) ? " (DONE)" : "", | |
298 | td->urb, td->index, | |
299 | hc32_to_cpup (ohci, &td->hwNextTD)); | |
300 | if ((tmp & TD_ISO) == 0) { | |
301 | const char *toggle, *pid; | |
302 | u32 cbp, be; | |
303 | ||
304 | switch (tmp & TD_T) { | |
305 | case TD_T_DATA0: toggle = data0; break; | |
306 | case TD_T_DATA1: toggle = data1; break; | |
307 | case TD_T_TOGGLE: toggle = "(CARRY)"; break; | |
308 | default: toggle = "(?)"; break; | |
309 | } | |
310 | switch (tmp & TD_DP) { | |
311 | case TD_DP_SETUP: pid = "SETUP"; break; | |
312 | case TD_DP_IN: pid = "IN"; break; | |
313 | case TD_DP_OUT: pid = "OUT"; break; | |
314 | default: pid = "(bad pid)"; break; | |
315 | } | |
316 | ohci_dbg (ohci, " info %08x CC=%x %s DI=%d %s %s\n", tmp, | |
317 | TD_CC_GET(tmp), /* EC, */ toggle, | |
318 | (tmp & TD_DI) >> 21, pid, | |
319 | (tmp & TD_R) ? "R" : ""); | |
320 | cbp = hc32_to_cpup (ohci, &td->hwCBP); | |
321 | be = hc32_to_cpup (ohci, &td->hwBE); | |
322 | ohci_dbg (ohci, " cbp %08x be %08x (len %d)\n", cbp, be, | |
323 | cbp ? (be + 1 - cbp) : 0); | |
324 | } else { | |
325 | unsigned i; | |
326 | ohci_dbg (ohci, " info %08x CC=%x FC=%d DI=%d SF=%04x\n", tmp, | |
327 | TD_CC_GET(tmp), | |
328 | (tmp >> 24) & 0x07, | |
329 | (tmp & TD_DI) >> 21, | |
330 | tmp & 0x0000ffff); | |
331 | ohci_dbg (ohci, " bp0 %08x be %08x\n", | |
332 | hc32_to_cpup (ohci, &td->hwCBP) & ~0x0fff, | |
333 | hc32_to_cpup (ohci, &td->hwBE)); | |
334 | for (i = 0; i < MAXPSW; i++) { | |
335 | u16 psw = ohci_hwPSW (ohci, td, i); | |
336 | int cc = (psw >> 12) & 0x0f; | |
337 | ohci_dbg (ohci, " psw [%d] = %2x, CC=%x %s=%d\n", i, | |
338 | psw, cc, | |
339 | (cc >= 0x0e) ? "OFFSET" : "SIZE", | |
340 | psw & 0x0fff); | |
341 | } | |
342 | } | |
343 | } | |
344 | ||
345 | /* caller MUST own hcd spinlock if verbose is set! */ | |
346 | static void __attribute__((unused)) | |
347 | ohci_dump_ed (const struct ohci_hcd *ohci, const char *label, | |
348 | const struct ed *ed, int verbose) | |
349 | { | |
350 | u32 tmp = hc32_to_cpu (ohci, ed->hwINFO); | |
351 | char *type = ""; | |
352 | ||
353 | ohci_dbg (ohci, "%s, ed %p state 0x%x type %s; next ed %08x\n", | |
354 | label, | |
355 | ed, ed->state, edstring (ed->type), | |
356 | hc32_to_cpup (ohci, &ed->hwNextED)); | |
357 | switch (tmp & (ED_IN|ED_OUT)) { | |
358 | case ED_OUT: type = "-OUT"; break; | |
359 | case ED_IN: type = "-IN"; break; | |
360 | /* else from TDs ... control */ | |
361 | } | |
362 | ohci_dbg (ohci, | |
363 | " info %08x MAX=%d%s%s%s%s EP=%d%s DEV=%d\n", tmp, | |
364 | 0x03ff & (tmp >> 16), | |
365 | (tmp & ED_DEQUEUE) ? " DQ" : "", | |
366 | (tmp & ED_ISO) ? " ISO" : "", | |
367 | (tmp & ED_SKIP) ? " SKIP" : "", | |
368 | (tmp & ED_LOWSPEED) ? " LOW" : "", | |
369 | 0x000f & (tmp >> 7), | |
370 | type, | |
371 | 0x007f & tmp); | |
372 | tmp = hc32_to_cpup (ohci, &ed->hwHeadP); | |
373 | ohci_dbg (ohci, " tds: head %08x %s%s tail %08x%s\n", | |
374 | tmp, | |
375 | (tmp & ED_C) ? data1 : data0, | |
376 | (tmp & ED_H) ? " HALT" : "", | |
377 | hc32_to_cpup (ohci, &ed->hwTailP), | |
378 | verbose ? "" : " (not listing)"); | |
379 | if (verbose) { | |
380 | struct list_head *tmp; | |
381 | ||
382 | /* use ed->td_list because HC concurrently modifies | |
383 | * hwNextTD as it accumulates ed_donelist. | |
384 | */ | |
385 | list_for_each (tmp, &ed->td_list) { | |
386 | struct td *td; | |
387 | td = list_entry (tmp, struct td, td_list); | |
388 | ohci_dump_td (ohci, " ->", td); | |
389 | } | |
390 | } | |
391 | } | |
392 | ||
393 | #else | |
394 | static inline void ohci_dump (struct ohci_hcd *controller, int verbose) {} | |
395 | ||
396 | #undef OHCI_VERBOSE_DEBUG | |
397 | ||
398 | #endif /* DEBUG */ | |
399 | ||
400 | /*-------------------------------------------------------------------------*/ | |
401 | ||
402 | #ifdef STUB_DEBUG_FILES | |
403 | ||
404 | static inline void create_debug_files (struct ohci_hcd *bus) { } | |
405 | static inline void remove_debug_files (struct ohci_hcd *bus) { } | |
406 | ||
407 | #else | |
408 | ||
409 | static ssize_t | |
410 | show_list (struct ohci_hcd *ohci, char *buf, size_t count, struct ed *ed) | |
411 | { | |
412 | unsigned temp, size = count; | |
413 | ||
414 | if (!ed) | |
415 | return 0; | |
416 | ||
417 | /* print first --> last */ | |
418 | while (ed->ed_prev) | |
419 | ed = ed->ed_prev; | |
420 | ||
421 | /* dump a snapshot of the bulk or control schedule */ | |
422 | while (ed) { | |
423 | u32 info = hc32_to_cpu (ohci, ed->hwINFO); | |
424 | u32 headp = hc32_to_cpu (ohci, ed->hwHeadP); | |
425 | struct list_head *entry; | |
426 | struct td *td; | |
427 | ||
428 | temp = scnprintf (buf, size, | |
429 | "ed/%p %cs dev%d ep%d%s max %d %08x%s%s %s", | |
430 | ed, | |
431 | (info & ED_LOWSPEED) ? 'l' : 'f', | |
432 | info & 0x7f, | |
433 | (info >> 7) & 0xf, | |
434 | (info & ED_IN) ? "in" : "out", | |
435 | 0x03ff & (info >> 16), | |
436 | info, | |
437 | (info & ED_SKIP) ? " s" : "", | |
438 | (headp & ED_H) ? " H" : "", | |
439 | (headp & ED_C) ? data1 : data0); | |
440 | size -= temp; | |
441 | buf += temp; | |
442 | ||
443 | list_for_each (entry, &ed->td_list) { | |
444 | u32 cbp, be; | |
445 | ||
446 | td = list_entry (entry, struct td, td_list); | |
447 | info = hc32_to_cpup (ohci, &td->hwINFO); | |
448 | cbp = hc32_to_cpup (ohci, &td->hwCBP); | |
449 | be = hc32_to_cpup (ohci, &td->hwBE); | |
450 | temp = scnprintf (buf, size, | |
451 | "\n\ttd %p %s %d cc=%x urb %p (%08x)", | |
452 | td, | |
453 | ({ char *pid; | |
454 | switch (info & TD_DP) { | |
455 | case TD_DP_SETUP: pid = "setup"; break; | |
456 | case TD_DP_IN: pid = "in"; break; | |
457 | case TD_DP_OUT: pid = "out"; break; | |
458 | default: pid = "(?)"; break; | |
459 | } pid;}), | |
460 | cbp ? (be + 1 - cbp) : 0, | |
461 | TD_CC_GET (info), td->urb, info); | |
462 | size -= temp; | |
463 | buf += temp; | |
464 | } | |
465 | ||
466 | temp = scnprintf (buf, size, "\n"); | |
467 | size -= temp; | |
468 | buf += temp; | |
469 | ||
470 | ed = ed->ed_next; | |
471 | } | |
472 | return count - size; | |
473 | } | |
474 | ||
475 | static ssize_t | |
476 | show_async (struct class_device *class_dev, char *buf) | |
477 | { | |
478 | struct usb_bus *bus; | |
479 | struct usb_hcd *hcd; | |
480 | struct ohci_hcd *ohci; | |
481 | size_t temp; | |
482 | unsigned long flags; | |
483 | ||
8561b10f | 484 | bus = class_get_devdata(class_dev); |
1da177e4 LT |
485 | hcd = bus->hcpriv; |
486 | ohci = hcd_to_ohci(hcd); | |
487 | ||
488 | /* display control and bulk lists together, for simplicity */ | |
489 | spin_lock_irqsave (&ohci->lock, flags); | |
490 | temp = show_list (ohci, buf, PAGE_SIZE, ohci->ed_controltail); | |
491 | temp += show_list (ohci, buf + temp, PAGE_SIZE - temp, ohci->ed_bulktail); | |
492 | spin_unlock_irqrestore (&ohci->lock, flags); | |
493 | ||
494 | return temp; | |
495 | } | |
496 | static CLASS_DEVICE_ATTR (async, S_IRUGO, show_async, NULL); | |
497 | ||
498 | ||
499 | #define DBG_SCHED_LIMIT 64 | |
500 | ||
501 | static ssize_t | |
502 | show_periodic (struct class_device *class_dev, char *buf) | |
503 | { | |
504 | struct usb_bus *bus; | |
505 | struct usb_hcd *hcd; | |
506 | struct ohci_hcd *ohci; | |
507 | struct ed **seen, *ed; | |
508 | unsigned long flags; | |
509 | unsigned temp, size, seen_count; | |
510 | char *next; | |
511 | unsigned i; | |
512 | ||
513 | if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, SLAB_ATOMIC))) | |
514 | return 0; | |
515 | seen_count = 0; | |
516 | ||
8561b10f | 517 | bus = class_get_devdata(class_dev); |
1da177e4 LT |
518 | hcd = bus->hcpriv; |
519 | ohci = hcd_to_ohci(hcd); | |
520 | next = buf; | |
521 | size = PAGE_SIZE; | |
522 | ||
523 | temp = scnprintf (next, size, "size = %d\n", NUM_INTS); | |
524 | size -= temp; | |
525 | next += temp; | |
526 | ||
527 | /* dump a snapshot of the periodic schedule (and load) */ | |
528 | spin_lock_irqsave (&ohci->lock, flags); | |
529 | for (i = 0; i < NUM_INTS; i++) { | |
530 | if (!(ed = ohci->periodic [i])) | |
531 | continue; | |
532 | ||
533 | temp = scnprintf (next, size, "%2d [%3d]:", i, ohci->load [i]); | |
534 | size -= temp; | |
535 | next += temp; | |
536 | ||
537 | do { | |
538 | temp = scnprintf (next, size, " ed%d/%p", | |
539 | ed->interval, ed); | |
540 | size -= temp; | |
541 | next += temp; | |
542 | for (temp = 0; temp < seen_count; temp++) { | |
543 | if (seen [temp] == ed) | |
544 | break; | |
545 | } | |
546 | ||
547 | /* show more info the first time around */ | |
548 | if (temp == seen_count) { | |
549 | u32 info = hc32_to_cpu (ohci, ed->hwINFO); | |
550 | struct list_head *entry; | |
551 | unsigned qlen = 0; | |
552 | ||
553 | /* qlen measured here in TDs, not urbs */ | |
554 | list_for_each (entry, &ed->td_list) | |
555 | qlen++; | |
556 | ||
557 | temp = scnprintf (next, size, | |
558 | " (%cs dev%d ep%d%s-%s qlen %u" | |
559 | " max %d %08x%s%s)", | |
560 | (info & ED_LOWSPEED) ? 'l' : 'f', | |
561 | info & 0x7f, | |
562 | (info >> 7) & 0xf, | |
563 | (info & ED_IN) ? "in" : "out", | |
564 | (info & ED_ISO) ? "iso" : "int", | |
565 | qlen, | |
566 | 0x03ff & (info >> 16), | |
567 | info, | |
568 | (info & ED_SKIP) ? " K" : "", | |
569 | (ed->hwHeadP & | |
570 | cpu_to_hc32(ohci, ED_H)) ? | |
571 | " H" : ""); | |
572 | size -= temp; | |
573 | next += temp; | |
574 | ||
575 | if (seen_count < DBG_SCHED_LIMIT) | |
576 | seen [seen_count++] = ed; | |
577 | ||
578 | ed = ed->ed_next; | |
579 | ||
580 | } else { | |
581 | /* we've seen it and what's after */ | |
582 | temp = 0; | |
583 | ed = NULL; | |
584 | } | |
585 | ||
586 | } while (ed); | |
587 | ||
588 | temp = scnprintf (next, size, "\n"); | |
589 | size -= temp; | |
590 | next += temp; | |
591 | } | |
592 | spin_unlock_irqrestore (&ohci->lock, flags); | |
593 | kfree (seen); | |
594 | ||
595 | return PAGE_SIZE - size; | |
596 | } | |
597 | static CLASS_DEVICE_ATTR (periodic, S_IRUGO, show_periodic, NULL); | |
598 | ||
599 | ||
600 | #undef DBG_SCHED_LIMIT | |
601 | ||
602 | static ssize_t | |
603 | show_registers (struct class_device *class_dev, char *buf) | |
604 | { | |
605 | struct usb_bus *bus; | |
606 | struct usb_hcd *hcd; | |
607 | struct ohci_hcd *ohci; | |
608 | struct ohci_regs __iomem *regs; | |
609 | unsigned long flags; | |
610 | unsigned temp, size; | |
611 | char *next; | |
612 | u32 rdata; | |
613 | ||
8561b10f | 614 | bus = class_get_devdata(class_dev); |
1da177e4 LT |
615 | hcd = bus->hcpriv; |
616 | ohci = hcd_to_ohci(hcd); | |
617 | regs = ohci->regs; | |
618 | next = buf; | |
619 | size = PAGE_SIZE; | |
620 | ||
621 | spin_lock_irqsave (&ohci->lock, flags); | |
622 | ||
623 | /* dump driver info, then registers in spec order */ | |
624 | ||
625 | ohci_dbg_sw (ohci, &next, &size, | |
626 | "bus %s, device %s\n" | |
627 | "%s\n" | |
628 | "%s version " DRIVER_VERSION "\n", | |
629 | hcd->self.controller->bus->name, | |
630 | hcd->self.controller->bus_id, | |
631 | hcd->product_desc, | |
632 | hcd_name); | |
633 | ||
ca078bae | 634 | if (bus->controller->power.power_state.event) { |
1da177e4 LT |
635 | size -= scnprintf (next, size, |
636 | "SUSPENDED (no register access)\n"); | |
637 | goto done; | |
638 | } | |
639 | ||
640 | ohci_dump_status(ohci, &next, &size); | |
641 | ||
642 | /* hcca */ | |
643 | if (ohci->hcca) | |
644 | ohci_dbg_sw (ohci, &next, &size, | |
645 | "hcca frame 0x%04x\n", ohci_frame_no(ohci)); | |
646 | ||
647 | /* other registers mostly affect frame timings */ | |
648 | rdata = ohci_readl (ohci, ®s->fminterval); | |
649 | temp = scnprintf (next, size, | |
650 | "fmintvl 0x%08x %sFSMPS=0x%04x FI=0x%04x\n", | |
651 | rdata, (rdata >> 31) ? "FIT " : "", | |
652 | (rdata >> 16) & 0xefff, rdata & 0xffff); | |
653 | size -= temp; | |
654 | next += temp; | |
655 | ||
656 | rdata = ohci_readl (ohci, ®s->fmremaining); | |
657 | temp = scnprintf (next, size, "fmremaining 0x%08x %sFR=0x%04x\n", | |
658 | rdata, (rdata >> 31) ? "FRT " : "", | |
659 | rdata & 0x3fff); | |
660 | size -= temp; | |
661 | next += temp; | |
662 | ||
663 | rdata = ohci_readl (ohci, ®s->periodicstart); | |
664 | temp = scnprintf (next, size, "periodicstart 0x%04x\n", | |
665 | rdata & 0x3fff); | |
666 | size -= temp; | |
667 | next += temp; | |
668 | ||
669 | rdata = ohci_readl (ohci, ®s->lsthresh); | |
670 | temp = scnprintf (next, size, "lsthresh 0x%04x\n", | |
671 | rdata & 0x3fff); | |
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 | { | |
8561b10f | 687 | struct class_device *cldev = ohci_to_hcd(ohci)->self.class_dev; |
1da177e4 LT |
688 | |
689 | class_device_create_file(cldev, &class_device_attr_async); | |
690 | class_device_create_file(cldev, &class_device_attr_periodic); | |
691 | class_device_create_file(cldev, &class_device_attr_registers); | |
692 | ohci_dbg (ohci, "created debug files\n"); | |
693 | } | |
694 | ||
695 | static inline void remove_debug_files (struct ohci_hcd *ohci) | |
696 | { | |
8561b10f | 697 | struct class_device *cldev = ohci_to_hcd(ohci)->self.class_dev; |
1da177e4 LT |
698 | |
699 | class_device_remove_file(cldev, &class_device_attr_async); | |
700 | class_device_remove_file(cldev, &class_device_attr_periodic); | |
701 | class_device_remove_file(cldev, &class_device_attr_registers); | |
702 | } | |
703 | ||
704 | #endif | |
705 | ||
706 | /*-------------------------------------------------------------------------*/ | |
707 |