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); | |
1da177e4 LT |
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 | { | |
fdd13b36 | 227 | u32 temp, i; |
1da177e4 LT |
228 | |
229 | temp = roothub_a (controller); | |
230 | if (temp == ~(u32)0) | |
231 | return; | |
1da177e4 LT |
232 | |
233 | if (verbose) { | |
234 | ohci_dbg_sw (controller, next, size, | |
fdd13b36 | 235 | "roothub.a %08x POTPGT=%d%s%s%s%s%s NDP=%d(%d)\n", temp, |
1da177e4 LT |
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" : "", | |
fdd13b36 | 242 | (temp & RH_A_NDP), controller->num_ports |
1da177e4 LT |
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 | ||
fdd13b36 | 264 | for (i = 0; i < controller->num_ports; i++) { |
1da177e4 LT |
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 | ||
8561b10f | 479 | bus = class_get_devdata(class_dev); |
17200583 | 480 | hcd = bus_to_hcd(bus); |
1da177e4 LT |
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 | ||
54e6ecb2 | 508 | if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC))) |
1da177e4 LT |
509 | return 0; |
510 | seen_count = 0; | |
511 | ||
8561b10f | 512 | bus = class_get_devdata(class_dev); |
17200583 | 513 | hcd = bus_to_hcd(bus); |
1da177e4 LT |
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 | ||
8561b10f | 609 | bus = class_get_devdata(class_dev); |
17200583 | 610 | hcd = bus_to_hcd(bus); |
1da177e4 LT |
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 | ||
ca078bae | 629 | if (bus->controller->power.power_state.event) { |
1da177e4 LT |
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, ®s->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, ®s->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, ®s->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, ®s->lsthresh); | |
665 | temp = scnprintf (next, size, "lsthresh 0x%04x\n", | |
666 | rdata & 0x3fff); | |
667 | size -= temp; | |
668 | next += temp; | |
669 | ||
d413984a DB |
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 | ||
1da177e4 LT |
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; |
1ee95216 | 688 | int retval; |
1da177e4 | 689 | |
1ee95216 GKH |
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); | |
1da177e4 LT |
693 | ohci_dbg (ohci, "created debug files\n"); |
694 | } | |
695 | ||
696 | static inline void remove_debug_files (struct ohci_hcd *ohci) | |
697 | { | |
8561b10f | 698 | struct class_device *cldev = ohci_to_hcd(ohci)->self.class_dev; |
1da177e4 LT |
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 |