Commit | Line | Data |
---|---|---|
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; \ | |
dd9048af | 19 | default: temp = "isoc"; break; \ |
1da177e4 LT |
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 | */ | |
8234509c | 26 | static void __maybe_unused |
55d84968 | 27 | urb_print(struct urb * urb, char * str, int small, int status) |
1da177e4 LT |
28 | { |
29 | unsigned int pipe= urb->pipe; | |
30 | ||
31 | if (!urb->dev || !urb->dev->bus) { | |
b8a6f71d | 32 | printk(KERN_DEBUG "%s URB: no dev\n", str); |
1da177e4 LT |
33 | return; |
34 | } | |
35 | ||
36 | #ifndef OHCI_VERBOSE_DEBUG | |
55d84968 | 37 | if (status != 0) |
1da177e4 | 38 | #endif |
b8a6f71d | 39 | printk(KERN_DEBUG "%s %p dev=%d ep=%d%s-%s flags=%x len=%d/%d stat=%d\n", |
1da177e4 LT |
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, | |
55d84968 | 49 | status); |
1da177e4 LT |
50 | |
51 | #ifdef OHCI_VERBOSE_DEBUG | |
52 | if (!small) { | |
53 | int i, len; | |
54 | ||
55 | if (usb_pipecontrol (pipe)) { | |
f45ba776 | 56 | printk (KERN_DEBUG "%s: setup(8):", __FILE__); |
1da177e4 LT |
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) { | |
f45ba776 | 62 | printk (KERN_DEBUG "%s: data(%d/%d):", __FILE__, |
1da177e4 LT |
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]); | |
55d84968 | 69 | printk ("%s stat:%d\n", i < len? "...": "", status); |
1da177e4 LT |
70 | } |
71 | } | |
72 | #endif | |
73 | } | |
74 | ||
75 | #define ohci_dbg_sw(ohci, next, size, format, arg...) \ | |
76 | do { \ | |
bdd203a0 | 77 | if (next != NULL) { \ |
1da177e4 LT |
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 | ||
194b3af4 AS |
85 | /* Version for use where "next" is the address of a local variable */ |
86 | #define ohci_dbg_nosw(ohci, next, size, format, arg...) \ | |
87 | do { \ | |
88 | unsigned s_len; \ | |
89 | s_len = scnprintf(*next, *size, format, ## arg); \ | |
90 | *size -= s_len; *next += s_len; \ | |
91 | } while (0); | |
92 | ||
1da177e4 LT |
93 | |
94 | static void ohci_dump_intr_mask ( | |
95 | struct ohci_hcd *ohci, | |
96 | char *label, | |
97 | u32 mask, | |
98 | char **next, | |
99 | unsigned *size) | |
100 | { | |
101 | ohci_dbg_sw (ohci, next, size, "%s 0x%08x%s%s%s%s%s%s%s%s%s\n", | |
102 | label, | |
103 | mask, | |
104 | (mask & OHCI_INTR_MIE) ? " MIE" : "", | |
105 | (mask & OHCI_INTR_OC) ? " OC" : "", | |
106 | (mask & OHCI_INTR_RHSC) ? " RHSC" : "", | |
107 | (mask & OHCI_INTR_FNO) ? " FNO" : "", | |
108 | (mask & OHCI_INTR_UE) ? " UE" : "", | |
109 | (mask & OHCI_INTR_RD) ? " RD" : "", | |
110 | (mask & OHCI_INTR_SF) ? " SF" : "", | |
111 | (mask & OHCI_INTR_WDH) ? " WDH" : "", | |
112 | (mask & OHCI_INTR_SO) ? " SO" : "" | |
113 | ); | |
114 | } | |
115 | ||
116 | static void maybe_print_eds ( | |
117 | struct ohci_hcd *ohci, | |
118 | char *label, | |
119 | u32 value, | |
120 | char **next, | |
121 | unsigned *size) | |
122 | { | |
123 | if (value) | |
124 | ohci_dbg_sw (ohci, next, size, "%s %08x\n", label, value); | |
125 | } | |
126 | ||
127 | static char *hcfs2string (int state) | |
128 | { | |
129 | switch (state) { | |
130 | case OHCI_USB_RESET: return "reset"; | |
131 | case OHCI_USB_RESUME: return "resume"; | |
132 | case OHCI_USB_OPER: return "operational"; | |
133 | case OHCI_USB_SUSPEND: return "suspend"; | |
134 | } | |
135 | return "?"; | |
136 | } | |
137 | ||
b7463c71 AS |
138 | static const char *rh_state_string(struct ohci_hcd *ohci) |
139 | { | |
140 | switch (ohci->rh_state) { | |
141 | case OHCI_RH_HALTED: | |
142 | return "halted"; | |
143 | case OHCI_RH_SUSPENDED: | |
144 | return "suspended"; | |
145 | case OHCI_RH_RUNNING: | |
146 | return "running"; | |
147 | } | |
148 | return "?"; | |
149 | } | |
150 | ||
1da177e4 LT |
151 | // dump control and status registers |
152 | static void | |
153 | ohci_dump_status (struct ohci_hcd *controller, char **next, unsigned *size) | |
154 | { | |
155 | struct ohci_regs __iomem *regs = controller->regs; | |
156 | u32 temp; | |
157 | ||
158 | temp = ohci_readl (controller, ®s->revision) & 0xff; | |
159 | ohci_dbg_sw (controller, next, size, | |
b7463c71 | 160 | "OHCI %d.%d, %s legacy support registers, rh state %s\n", |
1da177e4 | 161 | 0x03 & (temp >> 4), (temp & 0x0f), |
b7463c71 AS |
162 | (temp & 0x0100) ? "with" : "NO", |
163 | rh_state_string(controller)); | |
1da177e4 LT |
164 | |
165 | temp = ohci_readl (controller, ®s->control); | |
166 | ohci_dbg_sw (controller, next, size, | |
167 | "control 0x%03x%s%s%s HCFS=%s%s%s%s%s CBSR=%d\n", | |
168 | temp, | |
169 | (temp & OHCI_CTRL_RWE) ? " RWE" : "", | |
170 | (temp & OHCI_CTRL_RWC) ? " RWC" : "", | |
171 | (temp & OHCI_CTRL_IR) ? " IR" : "", | |
172 | hcfs2string (temp & OHCI_CTRL_HCFS), | |
173 | (temp & OHCI_CTRL_BLE) ? " BLE" : "", | |
174 | (temp & OHCI_CTRL_CLE) ? " CLE" : "", | |
175 | (temp & OHCI_CTRL_IE) ? " IE" : "", | |
176 | (temp & OHCI_CTRL_PLE) ? " PLE" : "", | |
177 | temp & OHCI_CTRL_CBSR | |
178 | ); | |
179 | ||
180 | temp = ohci_readl (controller, ®s->cmdstatus); | |
181 | ohci_dbg_sw (controller, next, size, | |
182 | "cmdstatus 0x%05x SOC=%d%s%s%s%s\n", temp, | |
183 | (temp & OHCI_SOC) >> 16, | |
184 | (temp & OHCI_OCR) ? " OCR" : "", | |
185 | (temp & OHCI_BLF) ? " BLF" : "", | |
186 | (temp & OHCI_CLF) ? " CLF" : "", | |
187 | (temp & OHCI_HCR) ? " HCR" : "" | |
188 | ); | |
189 | ||
190 | ohci_dump_intr_mask (controller, "intrstatus", | |
191 | ohci_readl (controller, ®s->intrstatus), | |
192 | next, size); | |
193 | ohci_dump_intr_mask (controller, "intrenable", | |
194 | ohci_readl (controller, ®s->intrenable), | |
195 | next, size); | |
196 | // intrdisable always same as intrenable | |
197 | ||
198 | maybe_print_eds (controller, "ed_periodcurrent", | |
199 | ohci_readl (controller, ®s->ed_periodcurrent), | |
200 | next, size); | |
201 | ||
202 | maybe_print_eds (controller, "ed_controlhead", | |
203 | ohci_readl (controller, ®s->ed_controlhead), | |
204 | next, size); | |
205 | maybe_print_eds (controller, "ed_controlcurrent", | |
206 | ohci_readl (controller, ®s->ed_controlcurrent), | |
207 | next, size); | |
208 | ||
209 | maybe_print_eds (controller, "ed_bulkhead", | |
210 | ohci_readl (controller, ®s->ed_bulkhead), | |
211 | next, size); | |
212 | maybe_print_eds (controller, "ed_bulkcurrent", | |
213 | ohci_readl (controller, ®s->ed_bulkcurrent), | |
214 | next, size); | |
215 | ||
216 | maybe_print_eds (controller, "donehead", | |
217 | ohci_readl (controller, ®s->donehead), next, size); | |
1da177e4 LT |
218 | } |
219 | ||
220 | #define dbg_port_sw(hc,num,value,next,size) \ | |
221 | ohci_dbg_sw (hc, next, size, \ | |
222 | "roothub.portstatus [%d] " \ | |
223 | "0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \ | |
224 | num, temp, \ | |
225 | (temp & RH_PS_PRSC) ? " PRSC" : "", \ | |
226 | (temp & RH_PS_OCIC) ? " OCIC" : "", \ | |
227 | (temp & RH_PS_PSSC) ? " PSSC" : "", \ | |
228 | (temp & RH_PS_PESC) ? " PESC" : "", \ | |
229 | (temp & RH_PS_CSC) ? " CSC" : "", \ | |
dd9048af | 230 | \ |
1da177e4 LT |
231 | (temp & RH_PS_LSDA) ? " LSDA" : "", \ |
232 | (temp & RH_PS_PPS) ? " PPS" : "", \ | |
233 | (temp & RH_PS_PRS) ? " PRS" : "", \ | |
234 | (temp & RH_PS_POCI) ? " POCI" : "", \ | |
235 | (temp & RH_PS_PSS) ? " PSS" : "", \ | |
dd9048af | 236 | \ |
1da177e4 LT |
237 | (temp & RH_PS_PES) ? " PES" : "", \ |
238 | (temp & RH_PS_CCS) ? " CCS" : "" \ | |
239 | ); | |
240 | ||
241 | ||
242 | static void | |
243 | ohci_dump_roothub ( | |
244 | struct ohci_hcd *controller, | |
245 | int verbose, | |
246 | char **next, | |
247 | unsigned *size) | |
248 | { | |
fdd13b36 | 249 | u32 temp, i; |
1da177e4 LT |
250 | |
251 | temp = roothub_a (controller); | |
252 | if (temp == ~(u32)0) | |
253 | return; | |
1da177e4 LT |
254 | |
255 | if (verbose) { | |
256 | ohci_dbg_sw (controller, next, size, | |
fdd13b36 | 257 | "roothub.a %08x POTPGT=%d%s%s%s%s%s NDP=%d(%d)\n", temp, |
1da177e4 LT |
258 | ((temp & RH_A_POTPGT) >> 24) & 0xff, |
259 | (temp & RH_A_NOCP) ? " NOCP" : "", | |
260 | (temp & RH_A_OCPM) ? " OCPM" : "", | |
261 | (temp & RH_A_DT) ? " DT" : "", | |
262 | (temp & RH_A_NPS) ? " NPS" : "", | |
263 | (temp & RH_A_PSM) ? " PSM" : "", | |
fdd13b36 | 264 | (temp & RH_A_NDP), controller->num_ports |
1da177e4 LT |
265 | ); |
266 | temp = roothub_b (controller); | |
267 | ohci_dbg_sw (controller, next, size, | |
268 | "roothub.b %08x PPCM=%04x DR=%04x\n", | |
269 | temp, | |
270 | (temp & RH_B_PPCM) >> 16, | |
271 | (temp & RH_B_DR) | |
272 | ); | |
273 | temp = roothub_status (controller); | |
274 | ohci_dbg_sw (controller, next, size, | |
275 | "roothub.status %08x%s%s%s%s%s%s\n", | |
276 | temp, | |
277 | (temp & RH_HS_CRWE) ? " CRWE" : "", | |
278 | (temp & RH_HS_OCIC) ? " OCIC" : "", | |
279 | (temp & RH_HS_LPSC) ? " LPSC" : "", | |
280 | (temp & RH_HS_DRWE) ? " DRWE" : "", | |
281 | (temp & RH_HS_OCI) ? " OCI" : "", | |
282 | (temp & RH_HS_LPS) ? " LPS" : "" | |
283 | ); | |
284 | } | |
285 | ||
fdd13b36 | 286 | for (i = 0; i < controller->num_ports; i++) { |
1da177e4 LT |
287 | temp = roothub_portstatus (controller, i); |
288 | dbg_port_sw (controller, i, temp, next, size); | |
289 | } | |
290 | } | |
291 | ||
292 | static void ohci_dump (struct ohci_hcd *controller, int verbose) | |
293 | { | |
294 | ohci_dbg (controller, "OHCI controller state\n"); | |
295 | ||
296 | // dumps some of the state we know about | |
297 | ohci_dump_status (controller, NULL, NULL); | |
298 | if (controller->hcca) | |
299 | ohci_dbg (controller, | |
300 | "hcca frame #%04x\n", ohci_frame_no(controller)); | |
301 | ohci_dump_roothub (controller, 1, NULL, NULL); | |
302 | } | |
303 | ||
304 | static const char data0 [] = "DATA0"; | |
305 | static const char data1 [] = "DATA1"; | |
306 | ||
307 | static void ohci_dump_td (const struct ohci_hcd *ohci, const char *label, | |
308 | const struct td *td) | |
309 | { | |
310 | u32 tmp = hc32_to_cpup (ohci, &td->hwINFO); | |
311 | ||
312 | ohci_dbg (ohci, "%s td %p%s; urb %p index %d; hw next td %08x\n", | |
313 | label, td, | |
314 | (tmp & TD_DONE) ? " (DONE)" : "", | |
315 | td->urb, td->index, | |
316 | hc32_to_cpup (ohci, &td->hwNextTD)); | |
317 | if ((tmp & TD_ISO) == 0) { | |
318 | const char *toggle, *pid; | |
319 | u32 cbp, be; | |
320 | ||
321 | switch (tmp & TD_T) { | |
322 | case TD_T_DATA0: toggle = data0; break; | |
323 | case TD_T_DATA1: toggle = data1; break; | |
324 | case TD_T_TOGGLE: toggle = "(CARRY)"; break; | |
325 | default: toggle = "(?)"; break; | |
326 | } | |
327 | switch (tmp & TD_DP) { | |
328 | case TD_DP_SETUP: pid = "SETUP"; break; | |
329 | case TD_DP_IN: pid = "IN"; break; | |
330 | case TD_DP_OUT: pid = "OUT"; break; | |
331 | default: pid = "(bad pid)"; break; | |
332 | } | |
333 | ohci_dbg (ohci, " info %08x CC=%x %s DI=%d %s %s\n", tmp, | |
334 | TD_CC_GET(tmp), /* EC, */ toggle, | |
335 | (tmp & TD_DI) >> 21, pid, | |
336 | (tmp & TD_R) ? "R" : ""); | |
337 | cbp = hc32_to_cpup (ohci, &td->hwCBP); | |
338 | be = hc32_to_cpup (ohci, &td->hwBE); | |
339 | ohci_dbg (ohci, " cbp %08x be %08x (len %d)\n", cbp, be, | |
340 | cbp ? (be + 1 - cbp) : 0); | |
341 | } else { | |
342 | unsigned i; | |
343 | ohci_dbg (ohci, " info %08x CC=%x FC=%d DI=%d SF=%04x\n", tmp, | |
344 | TD_CC_GET(tmp), | |
345 | (tmp >> 24) & 0x07, | |
346 | (tmp & TD_DI) >> 21, | |
347 | tmp & 0x0000ffff); | |
348 | ohci_dbg (ohci, " bp0 %08x be %08x\n", | |
349 | hc32_to_cpup (ohci, &td->hwCBP) & ~0x0fff, | |
350 | hc32_to_cpup (ohci, &td->hwBE)); | |
351 | for (i = 0; i < MAXPSW; i++) { | |
352 | u16 psw = ohci_hwPSW (ohci, td, i); | |
353 | int cc = (psw >> 12) & 0x0f; | |
354 | ohci_dbg (ohci, " psw [%d] = %2x, CC=%x %s=%d\n", i, | |
355 | psw, cc, | |
356 | (cc >= 0x0e) ? "OFFSET" : "SIZE", | |
357 | psw & 0x0fff); | |
358 | } | |
359 | } | |
360 | } | |
361 | ||
362 | /* caller MUST own hcd spinlock if verbose is set! */ | |
8234509c | 363 | static void __maybe_unused |
1da177e4 LT |
364 | ohci_dump_ed (const struct ohci_hcd *ohci, const char *label, |
365 | const struct ed *ed, int verbose) | |
366 | { | |
367 | u32 tmp = hc32_to_cpu (ohci, ed->hwINFO); | |
368 | char *type = ""; | |
369 | ||
370 | ohci_dbg (ohci, "%s, ed %p state 0x%x type %s; next ed %08x\n", | |
371 | label, | |
372 | ed, ed->state, edstring (ed->type), | |
373 | hc32_to_cpup (ohci, &ed->hwNextED)); | |
374 | switch (tmp & (ED_IN|ED_OUT)) { | |
375 | case ED_OUT: type = "-OUT"; break; | |
376 | case ED_IN: type = "-IN"; break; | |
377 | /* else from TDs ... control */ | |
378 | } | |
379 | ohci_dbg (ohci, | |
380 | " info %08x MAX=%d%s%s%s%s EP=%d%s DEV=%d\n", tmp, | |
381 | 0x03ff & (tmp >> 16), | |
382 | (tmp & ED_DEQUEUE) ? " DQ" : "", | |
383 | (tmp & ED_ISO) ? " ISO" : "", | |
384 | (tmp & ED_SKIP) ? " SKIP" : "", | |
385 | (tmp & ED_LOWSPEED) ? " LOW" : "", | |
386 | 0x000f & (tmp >> 7), | |
387 | type, | |
388 | 0x007f & tmp); | |
389 | tmp = hc32_to_cpup (ohci, &ed->hwHeadP); | |
390 | ohci_dbg (ohci, " tds: head %08x %s%s tail %08x%s\n", | |
391 | tmp, | |
392 | (tmp & ED_C) ? data1 : data0, | |
393 | (tmp & ED_H) ? " HALT" : "", | |
394 | hc32_to_cpup (ohci, &ed->hwTailP), | |
395 | verbose ? "" : " (not listing)"); | |
396 | if (verbose) { | |
397 | struct list_head *tmp; | |
398 | ||
399 | /* use ed->td_list because HC concurrently modifies | |
400 | * hwNextTD as it accumulates ed_donelist. | |
401 | */ | |
402 | list_for_each (tmp, &ed->td_list) { | |
403 | struct td *td; | |
404 | td = list_entry (tmp, struct td, td_list); | |
405 | ohci_dump_td (ohci, " ->", td); | |
406 | } | |
407 | } | |
408 | } | |
409 | ||
410 | #else | |
411 | static inline void ohci_dump (struct ohci_hcd *controller, int verbose) {} | |
412 | ||
413 | #undef OHCI_VERBOSE_DEBUG | |
414 | ||
415 | #endif /* DEBUG */ | |
416 | ||
417 | /*-------------------------------------------------------------------------*/ | |
418 | ||
419 | #ifdef STUB_DEBUG_FILES | |
420 | ||
421 | static inline void create_debug_files (struct ohci_hcd *bus) { } | |
422 | static inline void remove_debug_files (struct ohci_hcd *bus) { } | |
423 | ||
424 | #else | |
425 | ||
684c19e0 TJ |
426 | static int debug_async_open(struct inode *, struct file *); |
427 | static int debug_periodic_open(struct inode *, struct file *); | |
428 | static int debug_registers_open(struct inode *, struct file *); | |
429 | static int debug_async_open(struct inode *, struct file *); | |
430 | static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); | |
431 | static int debug_close(struct inode *, struct file *); | |
432 | ||
433 | static const struct file_operations debug_async_fops = { | |
434 | .owner = THIS_MODULE, | |
435 | .open = debug_async_open, | |
436 | .read = debug_output, | |
437 | .release = debug_close, | |
6038f373 | 438 | .llseek = default_llseek, |
684c19e0 TJ |
439 | }; |
440 | static const struct file_operations debug_periodic_fops = { | |
441 | .owner = THIS_MODULE, | |
442 | .open = debug_periodic_open, | |
443 | .read = debug_output, | |
444 | .release = debug_close, | |
6038f373 | 445 | .llseek = default_llseek, |
684c19e0 TJ |
446 | }; |
447 | static const struct file_operations debug_registers_fops = { | |
448 | .owner = THIS_MODULE, | |
449 | .open = debug_registers_open, | |
450 | .read = debug_output, | |
451 | .release = debug_close, | |
6038f373 | 452 | .llseek = default_llseek, |
684c19e0 TJ |
453 | }; |
454 | ||
455 | static struct dentry *ohci_debug_root; | |
456 | ||
457 | struct debug_buffer { | |
458 | ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ | |
10983341 | 459 | struct ohci_hcd *ohci; |
684c19e0 TJ |
460 | struct mutex mutex; /* protect filling of buffer */ |
461 | size_t count; /* number of characters filled into buffer */ | |
462 | char *page; | |
463 | }; | |
464 | ||
1da177e4 LT |
465 | static ssize_t |
466 | show_list (struct ohci_hcd *ohci, char *buf, size_t count, struct ed *ed) | |
467 | { | |
468 | unsigned temp, size = count; | |
469 | ||
470 | if (!ed) | |
471 | return 0; | |
472 | ||
473 | /* print first --> last */ | |
474 | while (ed->ed_prev) | |
475 | ed = ed->ed_prev; | |
476 | ||
477 | /* dump a snapshot of the bulk or control schedule */ | |
478 | while (ed) { | |
479 | u32 info = hc32_to_cpu (ohci, ed->hwINFO); | |
480 | u32 headp = hc32_to_cpu (ohci, ed->hwHeadP); | |
481 | struct list_head *entry; | |
482 | struct td *td; | |
483 | ||
484 | temp = scnprintf (buf, size, | |
485 | "ed/%p %cs dev%d ep%d%s max %d %08x%s%s %s", | |
486 | ed, | |
487 | (info & ED_LOWSPEED) ? 'l' : 'f', | |
488 | info & 0x7f, | |
489 | (info >> 7) & 0xf, | |
490 | (info & ED_IN) ? "in" : "out", | |
491 | 0x03ff & (info >> 16), | |
492 | info, | |
493 | (info & ED_SKIP) ? " s" : "", | |
494 | (headp & ED_H) ? " H" : "", | |
495 | (headp & ED_C) ? data1 : data0); | |
496 | size -= temp; | |
497 | buf += temp; | |
498 | ||
499 | list_for_each (entry, &ed->td_list) { | |
500 | u32 cbp, be; | |
501 | ||
502 | td = list_entry (entry, struct td, td_list); | |
503 | info = hc32_to_cpup (ohci, &td->hwINFO); | |
504 | cbp = hc32_to_cpup (ohci, &td->hwCBP); | |
505 | be = hc32_to_cpup (ohci, &td->hwBE); | |
506 | temp = scnprintf (buf, size, | |
507 | "\n\ttd %p %s %d cc=%x urb %p (%08x)", | |
508 | td, | |
509 | ({ char *pid; | |
510 | switch (info & TD_DP) { | |
511 | case TD_DP_SETUP: pid = "setup"; break; | |
512 | case TD_DP_IN: pid = "in"; break; | |
513 | case TD_DP_OUT: pid = "out"; break; | |
514 | default: pid = "(?)"; break; | |
515 | } pid;}), | |
516 | cbp ? (be + 1 - cbp) : 0, | |
517 | TD_CC_GET (info), td->urb, info); | |
518 | size -= temp; | |
519 | buf += temp; | |
520 | } | |
521 | ||
522 | temp = scnprintf (buf, size, "\n"); | |
523 | size -= temp; | |
524 | buf += temp; | |
525 | ||
526 | ed = ed->ed_next; | |
527 | } | |
528 | return count - size; | |
529 | } | |
530 | ||
684c19e0 | 531 | static ssize_t fill_async_buffer(struct debug_buffer *buf) |
1da177e4 | 532 | { |
1da177e4 LT |
533 | struct ohci_hcd *ohci; |
534 | size_t temp; | |
535 | unsigned long flags; | |
536 | ||
10983341 | 537 | ohci = buf->ohci; |
1da177e4 LT |
538 | |
539 | /* display control and bulk lists together, for simplicity */ | |
540 | spin_lock_irqsave (&ohci->lock, flags); | |
684c19e0 TJ |
541 | temp = show_list(ohci, buf->page, buf->count, ohci->ed_controltail); |
542 | temp += show_list(ohci, buf->page + temp, buf->count - temp, | |
543 | ohci->ed_bulktail); | |
1da177e4 LT |
544 | spin_unlock_irqrestore (&ohci->lock, flags); |
545 | ||
546 | return temp; | |
547 | } | |
1da177e4 LT |
548 | |
549 | #define DBG_SCHED_LIMIT 64 | |
550 | ||
684c19e0 | 551 | static ssize_t fill_periodic_buffer(struct debug_buffer *buf) |
1da177e4 | 552 | { |
1da177e4 LT |
553 | struct ohci_hcd *ohci; |
554 | struct ed **seen, *ed; | |
555 | unsigned long flags; | |
556 | unsigned temp, size, seen_count; | |
557 | char *next; | |
558 | unsigned i; | |
559 | ||
54e6ecb2 | 560 | if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC))) |
1da177e4 LT |
561 | return 0; |
562 | seen_count = 0; | |
563 | ||
10983341 | 564 | ohci = buf->ohci; |
684c19e0 | 565 | next = buf->page; |
1da177e4 LT |
566 | size = PAGE_SIZE; |
567 | ||
568 | temp = scnprintf (next, size, "size = %d\n", NUM_INTS); | |
569 | size -= temp; | |
570 | next += temp; | |
571 | ||
572 | /* dump a snapshot of the periodic schedule (and load) */ | |
573 | spin_lock_irqsave (&ohci->lock, flags); | |
574 | for (i = 0; i < NUM_INTS; i++) { | |
575 | if (!(ed = ohci->periodic [i])) | |
576 | continue; | |
577 | ||
578 | temp = scnprintf (next, size, "%2d [%3d]:", i, ohci->load [i]); | |
579 | size -= temp; | |
580 | next += temp; | |
581 | ||
582 | do { | |
583 | temp = scnprintf (next, size, " ed%d/%p", | |
584 | ed->interval, ed); | |
585 | size -= temp; | |
586 | next += temp; | |
587 | for (temp = 0; temp < seen_count; temp++) { | |
588 | if (seen [temp] == ed) | |
589 | break; | |
590 | } | |
591 | ||
592 | /* show more info the first time around */ | |
593 | if (temp == seen_count) { | |
594 | u32 info = hc32_to_cpu (ohci, ed->hwINFO); | |
595 | struct list_head *entry; | |
596 | unsigned qlen = 0; | |
597 | ||
598 | /* qlen measured here in TDs, not urbs */ | |
599 | list_for_each (entry, &ed->td_list) | |
600 | qlen++; | |
601 | ||
602 | temp = scnprintf (next, size, | |
603 | " (%cs dev%d ep%d%s-%s qlen %u" | |
604 | " max %d %08x%s%s)", | |
605 | (info & ED_LOWSPEED) ? 'l' : 'f', | |
606 | info & 0x7f, | |
607 | (info >> 7) & 0xf, | |
608 | (info & ED_IN) ? "in" : "out", | |
609 | (info & ED_ISO) ? "iso" : "int", | |
610 | qlen, | |
611 | 0x03ff & (info >> 16), | |
612 | info, | |
613 | (info & ED_SKIP) ? " K" : "", | |
614 | (ed->hwHeadP & | |
615 | cpu_to_hc32(ohci, ED_H)) ? | |
dd9048af | 616 | " H" : ""); |
1da177e4 LT |
617 | size -= temp; |
618 | next += temp; | |
619 | ||
620 | if (seen_count < DBG_SCHED_LIMIT) | |
621 | seen [seen_count++] = ed; | |
622 | ||
623 | ed = ed->ed_next; | |
624 | ||
625 | } else { | |
626 | /* we've seen it and what's after */ | |
627 | temp = 0; | |
628 | ed = NULL; | |
629 | } | |
630 | ||
631 | } while (ed); | |
632 | ||
633 | temp = scnprintf (next, size, "\n"); | |
634 | size -= temp; | |
635 | next += temp; | |
636 | } | |
637 | spin_unlock_irqrestore (&ohci->lock, flags); | |
638 | kfree (seen); | |
639 | ||
640 | return PAGE_SIZE - size; | |
641 | } | |
1da177e4 LT |
642 | #undef DBG_SCHED_LIMIT |
643 | ||
684c19e0 | 644 | static ssize_t fill_registers_buffer(struct debug_buffer *buf) |
1da177e4 | 645 | { |
1da177e4 LT |
646 | struct usb_hcd *hcd; |
647 | struct ohci_hcd *ohci; | |
648 | struct ohci_regs __iomem *regs; | |
649 | unsigned long flags; | |
650 | unsigned temp, size; | |
651 | char *next; | |
652 | u32 rdata; | |
653 | ||
10983341 GKH |
654 | ohci = buf->ohci; |
655 | hcd = ohci_to_hcd(ohci); | |
1da177e4 | 656 | regs = ohci->regs; |
684c19e0 | 657 | next = buf->page; |
1da177e4 LT |
658 | size = PAGE_SIZE; |
659 | ||
660 | spin_lock_irqsave (&ohci->lock, flags); | |
661 | ||
662 | /* dump driver info, then registers in spec order */ | |
663 | ||
194b3af4 | 664 | ohci_dbg_nosw(ohci, &next, &size, |
1da177e4 LT |
665 | "bus %s, device %s\n" |
666 | "%s\n" | |
2b70f073 | 667 | "%s\n", |
1da177e4 | 668 | hcd->self.controller->bus->name, |
7071a3ce | 669 | dev_name(hcd->self.controller), |
1da177e4 LT |
670 | hcd->product_desc, |
671 | hcd_name); | |
672 | ||
541c7d43 | 673 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
1da177e4 LT |
674 | size -= scnprintf (next, size, |
675 | "SUSPENDED (no register access)\n"); | |
676 | goto done; | |
677 | } | |
678 | ||
679 | ohci_dump_status(ohci, &next, &size); | |
680 | ||
681 | /* hcca */ | |
682 | if (ohci->hcca) | |
194b3af4 | 683 | ohci_dbg_nosw(ohci, &next, &size, |
1da177e4 LT |
684 | "hcca frame 0x%04x\n", ohci_frame_no(ohci)); |
685 | ||
686 | /* other registers mostly affect frame timings */ | |
687 | rdata = ohci_readl (ohci, ®s->fminterval); | |
688 | temp = scnprintf (next, size, | |
689 | "fmintvl 0x%08x %sFSMPS=0x%04x FI=0x%04x\n", | |
690 | rdata, (rdata >> 31) ? "FIT " : "", | |
691 | (rdata >> 16) & 0xefff, rdata & 0xffff); | |
692 | size -= temp; | |
693 | next += temp; | |
694 | ||
695 | rdata = ohci_readl (ohci, ®s->fmremaining); | |
696 | temp = scnprintf (next, size, "fmremaining 0x%08x %sFR=0x%04x\n", | |
697 | rdata, (rdata >> 31) ? "FRT " : "", | |
698 | rdata & 0x3fff); | |
699 | size -= temp; | |
700 | next += temp; | |
701 | ||
702 | rdata = ohci_readl (ohci, ®s->periodicstart); | |
703 | temp = scnprintf (next, size, "periodicstart 0x%04x\n", | |
704 | rdata & 0x3fff); | |
705 | size -= temp; | |
706 | next += temp; | |
707 | ||
708 | rdata = ohci_readl (ohci, ®s->lsthresh); | |
709 | temp = scnprintf (next, size, "lsthresh 0x%04x\n", | |
710 | rdata & 0x3fff); | |
711 | size -= temp; | |
712 | next += temp; | |
713 | ||
d413984a | 714 | temp = scnprintf (next, size, "hub poll timer %s\n", |
541c7d43 | 715 | HCD_POLL_RH(ohci_to_hcd(ohci)) ? "ON" : "off"); |
d413984a DB |
716 | size -= temp; |
717 | next += temp; | |
718 | ||
1da177e4 LT |
719 | /* roothub */ |
720 | ohci_dump_roothub (ohci, 1, &next, &size); | |
721 | ||
722 | done: | |
723 | spin_unlock_irqrestore (&ohci->lock, flags); | |
684c19e0 | 724 | |
1da177e4 LT |
725 | return PAGE_SIZE - size; |
726 | } | |
1da177e4 | 727 | |
10983341 | 728 | static struct debug_buffer *alloc_buffer(struct ohci_hcd *ohci, |
684c19e0 TJ |
729 | ssize_t (*fill_func)(struct debug_buffer *)) |
730 | { | |
731 | struct debug_buffer *buf; | |
732 | ||
733 | buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL); | |
1da177e4 | 734 | |
684c19e0 | 735 | if (buf) { |
10983341 | 736 | buf->ohci = ohci; |
684c19e0 TJ |
737 | buf->fill_func = fill_func; |
738 | mutex_init(&buf->mutex); | |
739 | } | |
740 | ||
741 | return buf; | |
742 | } | |
743 | ||
744 | static int fill_buffer(struct debug_buffer *buf) | |
745 | { | |
746 | int ret = 0; | |
747 | ||
748 | if (!buf->page) | |
749 | buf->page = (char *)get_zeroed_page(GFP_KERNEL); | |
750 | ||
751 | if (!buf->page) { | |
752 | ret = -ENOMEM; | |
753 | goto out; | |
754 | } | |
755 | ||
756 | ret = buf->fill_func(buf); | |
757 | ||
758 | if (ret >= 0) { | |
759 | buf->count = ret; | |
760 | ret = 0; | |
761 | } | |
762 | ||
763 | out: | |
764 | return ret; | |
765 | } | |
766 | ||
767 | static ssize_t debug_output(struct file *file, char __user *user_buf, | |
768 | size_t len, loff_t *offset) | |
769 | { | |
770 | struct debug_buffer *buf = file->private_data; | |
771 | int ret = 0; | |
772 | ||
773 | mutex_lock(&buf->mutex); | |
774 | if (buf->count == 0) { | |
775 | ret = fill_buffer(buf); | |
776 | if (ret != 0) { | |
777 | mutex_unlock(&buf->mutex); | |
778 | goto out; | |
779 | } | |
780 | } | |
781 | mutex_unlock(&buf->mutex); | |
782 | ||
783 | ret = simple_read_from_buffer(user_buf, len, offset, | |
784 | buf->page, buf->count); | |
785 | ||
786 | out: | |
787 | return ret; | |
788 | ||
789 | } | |
790 | ||
791 | static int debug_close(struct inode *inode, struct file *file) | |
792 | { | |
793 | struct debug_buffer *buf = file->private_data; | |
794 | ||
795 | if (buf) { | |
796 | if (buf->page) | |
797 | free_page((unsigned long)buf->page); | |
798 | kfree(buf); | |
799 | } | |
800 | ||
801 | return 0; | |
802 | } | |
803 | static int debug_async_open(struct inode *inode, struct file *file) | |
804 | { | |
805 | file->private_data = alloc_buffer(inode->i_private, fill_async_buffer); | |
806 | ||
807 | return file->private_data ? 0 : -ENOMEM; | |
808 | } | |
809 | ||
810 | static int debug_periodic_open(struct inode *inode, struct file *file) | |
811 | { | |
812 | file->private_data = alloc_buffer(inode->i_private, | |
813 | fill_periodic_buffer); | |
814 | ||
815 | return file->private_data ? 0 : -ENOMEM; | |
816 | } | |
817 | ||
818 | static int debug_registers_open(struct inode *inode, struct file *file) | |
819 | { | |
820 | file->private_data = alloc_buffer(inode->i_private, | |
821 | fill_registers_buffer); | |
822 | ||
823 | return file->private_data ? 0 : -ENOMEM; | |
824 | } | |
1da177e4 LT |
825 | static inline void create_debug_files (struct ohci_hcd *ohci) |
826 | { | |
684c19e0 | 827 | struct usb_bus *bus = &ohci_to_hcd(ohci)->self; |
684c19e0 TJ |
828 | |
829 | ohci->debug_dir = debugfs_create_dir(bus->bus_name, ohci_debug_root); | |
830 | if (!ohci->debug_dir) | |
831 | goto dir_error; | |
832 | ||
833 | ohci->debug_async = debugfs_create_file("async", S_IRUGO, | |
10983341 | 834 | ohci->debug_dir, ohci, |
684c19e0 TJ |
835 | &debug_async_fops); |
836 | if (!ohci->debug_async) | |
837 | goto async_error; | |
838 | ||
839 | ohci->debug_periodic = debugfs_create_file("periodic", S_IRUGO, | |
10983341 | 840 | ohci->debug_dir, ohci, |
684c19e0 TJ |
841 | &debug_periodic_fops); |
842 | if (!ohci->debug_periodic) | |
843 | goto periodic_error; | |
844 | ||
845 | ohci->debug_registers = debugfs_create_file("registers", S_IRUGO, | |
10983341 | 846 | ohci->debug_dir, ohci, |
684c19e0 TJ |
847 | &debug_registers_fops); |
848 | if (!ohci->debug_registers) | |
849 | goto registers_error; | |
1da177e4 | 850 | |
1da177e4 | 851 | ohci_dbg (ohci, "created debug files\n"); |
684c19e0 TJ |
852 | return; |
853 | ||
854 | registers_error: | |
855 | debugfs_remove(ohci->debug_periodic); | |
856 | periodic_error: | |
857 | debugfs_remove(ohci->debug_async); | |
858 | async_error: | |
859 | debugfs_remove(ohci->debug_dir); | |
860 | dir_error: | |
861 | ohci->debug_periodic = NULL; | |
862 | ohci->debug_async = NULL; | |
863 | ohci->debug_dir = NULL; | |
1da177e4 LT |
864 | } |
865 | ||
866 | static inline void remove_debug_files (struct ohci_hcd *ohci) | |
867 | { | |
684c19e0 TJ |
868 | debugfs_remove(ohci->debug_registers); |
869 | debugfs_remove(ohci->debug_periodic); | |
870 | debugfs_remove(ohci->debug_async); | |
871 | debugfs_remove(ohci->debug_dir); | |
1da177e4 LT |
872 | } |
873 | ||
874 | #endif | |
875 | ||
876 | /*-------------------------------------------------------------------------*/ | |
877 |