Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * UHCI-specific debugging code. Invaluable when something | |
3 | * goes wrong, but don't get in my face. | |
4 | * | |
687f5f34 AS |
5 | * Kernel visible pointers are surrounded in []s and bus |
6 | * visible pointers are surrounded in ()s | |
1da177e4 LT |
7 | * |
8 | * (C) Copyright 1999 Linus Torvalds | |
9 | * (C) Copyright 1999-2001 Johannes Erdfelt | |
10 | */ | |
11 | ||
5a0e3ad6 | 12 | #include <linux/slab.h> |
1da177e4 LT |
13 | #include <linux/kernel.h> |
14 | #include <linux/debugfs.h> | |
1da177e4 LT |
15 | #include <asm/io.h> |
16 | ||
17 | #include "uhci-hcd.h" | |
18 | ||
13996ca7 CG |
19 | #define EXTRA_SPACE 1024 |
20 | ||
8d402e1a AS |
21 | static struct dentry *uhci_debugfs_root; |
22 | ||
1c20163d | 23 | #ifdef CONFIG_DYNAMIC_DEBUG |
1da177e4 | 24 | |
687f5f34 | 25 | /* Handle REALLY large printks so we don't overflow buffers */ |
8d402e1a | 26 | static void lprintk(char *buf) |
1da177e4 LT |
27 | { |
28 | char *p; | |
29 | ||
30 | /* Just write one line at a time */ | |
31 | while (buf) { | |
32 | p = strchr(buf, '\n'); | |
33 | if (p) | |
34 | *p = 0; | |
35 | printk(KERN_DEBUG "%s\n", buf); | |
36 | buf = p; | |
37 | if (buf) | |
38 | buf++; | |
39 | } | |
40 | } | |
41 | ||
51e2f62f JA |
42 | static int uhci_show_td(struct uhci_hcd *uhci, struct uhci_td *td, char *buf, |
43 | int len, int space) | |
1da177e4 LT |
44 | { |
45 | char *out = buf; | |
46 | char *spid; | |
47 | u32 status, token; | |
48 | ||
51e2f62f JA |
49 | status = td_status(uhci, td); |
50 | out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td, | |
51 | hc32_to_cpu(uhci, td->link)); | |
1da177e4 LT |
52 | out += sprintf(out, "e%d %s%s%s%s%s%s%s%s%s%sLength=%x ", |
53 | ((status >> 27) & 3), | |
54 | (status & TD_CTRL_SPD) ? "SPD " : "", | |
55 | (status & TD_CTRL_LS) ? "LS " : "", | |
56 | (status & TD_CTRL_IOC) ? "IOC " : "", | |
57 | (status & TD_CTRL_ACTIVE) ? "Active " : "", | |
58 | (status & TD_CTRL_STALLED) ? "Stalled " : "", | |
59 | (status & TD_CTRL_DBUFERR) ? "DataBufErr " : "", | |
60 | (status & TD_CTRL_BABBLE) ? "Babble " : "", | |
61 | (status & TD_CTRL_NAK) ? "NAK " : "", | |
62 | (status & TD_CTRL_CRCTIMEO) ? "CRC/Timeo " : "", | |
63 | (status & TD_CTRL_BITSTUFF) ? "BitStuff " : "", | |
64 | status & 0x7ff); | |
13996ca7 CG |
65 | if (out - buf > len) |
66 | goto done; | |
1da177e4 | 67 | |
51e2f62f | 68 | token = td_token(uhci, td); |
1da177e4 LT |
69 | switch (uhci_packetid(token)) { |
70 | case USB_PID_SETUP: | |
71 | spid = "SETUP"; | |
72 | break; | |
73 | case USB_PID_OUT: | |
74 | spid = "OUT"; | |
75 | break; | |
76 | case USB_PID_IN: | |
77 | spid = "IN"; | |
78 | break; | |
79 | default: | |
80 | spid = "?"; | |
81 | break; | |
82 | } | |
83 | ||
84 | out += sprintf(out, "MaxLen=%x DT%d EndPt=%x Dev=%x, PID=%x(%s) ", | |
85 | token >> 21, | |
86 | ((token >> 19) & 1), | |
87 | (token >> 15) & 15, | |
88 | (token >> 8) & 127, | |
89 | (token & 0xff), | |
90 | spid); | |
51e2f62f | 91 | out += sprintf(out, "(buf=%08x)\n", hc32_to_cpu(uhci, td->buffer)); |
1da177e4 | 92 | |
13996ca7 CG |
93 | done: |
94 | if (out - buf > len) | |
95 | out += sprintf(out, " ...\n"); | |
1da177e4 LT |
96 | return out - buf; |
97 | } | |
98 | ||
51e2f62f JA |
99 | static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, |
100 | char *buf, int len, int space) | |
1da177e4 LT |
101 | { |
102 | char *out = buf; | |
1da177e4 | 103 | struct uhci_td *td; |
dccf4a48 | 104 | int i, nactive, ninactive; |
4de7d2c2 | 105 | char *ptype; |
dccf4a48 | 106 | |
dccf4a48 AS |
107 | |
108 | out += sprintf(out, "urb_priv [%p] ", urbp); | |
109 | out += sprintf(out, "urb [%p] ", urbp->urb); | |
110 | out += sprintf(out, "qh [%p] ", urbp->qh); | |
111 | out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe)); | |
112 | out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe), | |
113 | (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT")); | |
13996ca7 CG |
114 | if (out - buf > len) |
115 | goto done; | |
dccf4a48 AS |
116 | |
117 | switch (usb_pipetype(urbp->urb->pipe)) { | |
4de7d2c2 AS |
118 | case PIPE_ISOCHRONOUS: ptype = "ISO"; break; |
119 | case PIPE_INTERRUPT: ptype = "INT"; break; | |
120 | case PIPE_BULK: ptype = "BLK"; break; | |
121 | default: | |
122 | case PIPE_CONTROL: ptype = "CTL"; break; | |
dccf4a48 AS |
123 | } |
124 | ||
4de7d2c2 | 125 | out += sprintf(out, "%s%s", ptype, (urbp->fsbr ? " FSBR" : "")); |
7ea0a2bc AS |
126 | out += sprintf(out, " Actlen=%d%s", urbp->urb->actual_length, |
127 | (urbp->qh->type == USB_ENDPOINT_XFER_CONTROL ? | |
128 | "-8" : "")); | |
dccf4a48 | 129 | |
eb231054 AS |
130 | if (urbp->urb->unlinked) |
131 | out += sprintf(out, " Unlinked=%d", urbp->urb->unlinked); | |
dccf4a48 AS |
132 | out += sprintf(out, "\n"); |
133 | ||
13996ca7 CG |
134 | if (out - buf > len) |
135 | goto done; | |
136 | ||
dccf4a48 AS |
137 | i = nactive = ninactive = 0; |
138 | list_for_each_entry(td, &urbp->td_list, list) { | |
c8155cc5 AS |
139 | if (urbp->qh->type != USB_ENDPOINT_XFER_ISOC && |
140 | (++i <= 10 || debug > 2)) { | |
dccf4a48 | 141 | out += sprintf(out, "%*s%d: ", space + 2, "", i); |
51e2f62f JA |
142 | out += uhci_show_td(uhci, td, out, |
143 | len - (out - buf), 0); | |
13996ca7 CG |
144 | if (out - buf > len) |
145 | goto tail; | |
dccf4a48 | 146 | } else { |
51e2f62f | 147 | if (td_status(uhci, td) & TD_CTRL_ACTIVE) |
dccf4a48 AS |
148 | ++nactive; |
149 | else | |
150 | ++ninactive; | |
151 | } | |
152 | } | |
153 | if (nactive + ninactive > 0) | |
3171fcab CG |
154 | out += sprintf(out, |
155 | "%*s[skipped %d inactive and %d active TDs]\n", | |
dccf4a48 | 156 | space, "", ninactive, nactive); |
13996ca7 CG |
157 | done: |
158 | if (out - buf > len) | |
159 | out += sprintf(out, " ...\n"); | |
160 | tail: | |
dccf4a48 AS |
161 | return out - buf; |
162 | } | |
163 | ||
e009f1b2 AS |
164 | static int uhci_show_qh(struct uhci_hcd *uhci, |
165 | struct uhci_qh *qh, char *buf, int len, int space) | |
dccf4a48 AS |
166 | { |
167 | char *out = buf; | |
168 | int i, nurbs; | |
51e2f62f | 169 | __hc32 element = qh_element(qh); |
4de7d2c2 | 170 | char *qtype; |
1da177e4 | 171 | |
4de7d2c2 AS |
172 | switch (qh->type) { |
173 | case USB_ENDPOINT_XFER_ISOC: qtype = "ISO"; break; | |
174 | case USB_ENDPOINT_XFER_INT: qtype = "INT"; break; | |
175 | case USB_ENDPOINT_XFER_BULK: qtype = "BLK"; break; | |
176 | case USB_ENDPOINT_XFER_CONTROL: qtype = "CTL"; break; | |
177 | default: qtype = "Skel" ; break; | |
178 | } | |
179 | ||
180 | out += sprintf(out, "%*s[%p] %s QH link (%08x) element (%08x)\n", | |
181 | space, "", qh, qtype, | |
51e2f62f JA |
182 | hc32_to_cpu(uhci, qh->link), |
183 | hc32_to_cpu(uhci, element)); | |
caf3827a | 184 | if (qh->type == USB_ENDPOINT_XFER_ISOC) |
3171fcab CG |
185 | out += sprintf(out, |
186 | "%*s period %d phase %d load %d us, frame %x desc [%p]\n", | |
3ca2a321 AS |
187 | space, "", qh->period, qh->phase, qh->load, |
188 | qh->iso_frame, qh->iso_packet_desc); | |
189 | else if (qh->type == USB_ENDPOINT_XFER_INT) | |
190 | out += sprintf(out, "%*s period %d phase %d load %d us\n", | |
191 | space, "", qh->period, qh->phase, qh->load); | |
13996ca7 CG |
192 | if (out - buf > len) |
193 | goto done; | |
1da177e4 | 194 | |
51e2f62f | 195 | if (element & UHCI_PTR_QH(uhci)) |
1da177e4 LT |
196 | out += sprintf(out, "%*s Element points to QH (bug?)\n", space, ""); |
197 | ||
51e2f62f | 198 | if (element & UHCI_PTR_DEPTH(uhci)) |
1da177e4 LT |
199 | out += sprintf(out, "%*s Depth traverse\n", space, ""); |
200 | ||
51e2f62f | 201 | if (element & cpu_to_hc32(uhci, 8)) |
1da177e4 LT |
202 | out += sprintf(out, "%*s Bit 3 set (bug?)\n", space, ""); |
203 | ||
51e2f62f | 204 | if (!(element & ~(UHCI_PTR_QH(uhci) | UHCI_PTR_DEPTH(uhci)))) |
1da177e4 LT |
205 | out += sprintf(out, "%*s Element is NULL (bug?)\n", space, ""); |
206 | ||
13996ca7 CG |
207 | if (out - buf > len) |
208 | goto done; | |
209 | ||
dccf4a48 AS |
210 | if (list_empty(&qh->queue)) { |
211 | out += sprintf(out, "%*s queue is empty\n", space, ""); | |
13996ca7 | 212 | if (qh == uhci->skel_async_qh) { |
51e2f62f | 213 | out += uhci_show_td(uhci, uhci->term_td, out, |
e009f1b2 | 214 | len - (out - buf), 0); |
13996ca7 CG |
215 | if (out - buf > len) |
216 | goto tail; | |
217 | } | |
dccf4a48 AS |
218 | } else { |
219 | struct urb_priv *urbp = list_entry(qh->queue.next, | |
220 | struct urb_priv, node); | |
221 | struct uhci_td *td = list_entry(urbp->td_list.next, | |
222 | struct uhci_td, list); | |
223 | ||
51e2f62f | 224 | if (element != LINK_TO_TD(uhci, td)) |
dccf4a48 AS |
225 | out += sprintf(out, "%*s Element != First TD\n", |
226 | space, ""); | |
227 | i = nurbs = 0; | |
228 | list_for_each_entry(urbp, &qh->queue, node) { | |
13996ca7 | 229 | if (++i <= 10) { |
51e2f62f | 230 | out += uhci_show_urbp(uhci, urbp, out, |
dccf4a48 | 231 | len - (out - buf), space + 2); |
13996ca7 CG |
232 | if (out - buf > len) |
233 | goto tail; | |
234 | } | |
dccf4a48 AS |
235 | else |
236 | ++nurbs; | |
1da177e4 | 237 | } |
dccf4a48 AS |
238 | if (nurbs > 0) |
239 | out += sprintf(out, "%*s Skipped %d URBs\n", | |
240 | space, "", nurbs); | |
1da177e4 LT |
241 | } |
242 | ||
13996ca7 CG |
243 | if (out - buf > len) |
244 | goto done; | |
245 | ||
85a975d0 | 246 | if (qh->dummy_td) { |
af0bb599 | 247 | out += sprintf(out, "%*s Dummy TD\n", space, ""); |
51e2f62f JA |
248 | out += uhci_show_td(uhci, qh->dummy_td, out, |
249 | len - (out - buf), 0); | |
13996ca7 CG |
250 | if (out - buf > len) |
251 | goto tail; | |
af0bb599 AS |
252 | } |
253 | ||
13996ca7 CG |
254 | done: |
255 | if (out - buf > len) | |
256 | out += sprintf(out, " ...\n"); | |
257 | tail: | |
1da177e4 LT |
258 | return out - buf; |
259 | } | |
260 | ||
13996ca7 | 261 | static int uhci_show_sc(int port, unsigned short status, char *buf) |
1da177e4 | 262 | { |
13996ca7 | 263 | return sprintf(buf, " stat%d = %04x %s%s%s%s%s%s%s%s%s%s\n", |
1da177e4 LT |
264 | port, |
265 | status, | |
266 | (status & USBPORTSC_SUSP) ? " Suspend" : "", | |
267 | (status & USBPORTSC_OCC) ? " OverCurrentChange" : "", | |
268 | (status & USBPORTSC_OC) ? " OverCurrent" : "", | |
269 | (status & USBPORTSC_PR) ? " Reset" : "", | |
270 | (status & USBPORTSC_LSDA) ? " LowSpeed" : "", | |
271 | (status & USBPORTSC_RD) ? " ResumeDetect" : "", | |
272 | (status & USBPORTSC_PEC) ? " EnableChange" : "", | |
273 | (status & USBPORTSC_PE) ? " Enabled" : "", | |
274 | (status & USBPORTSC_CSC) ? " ConnectChange" : "", | |
275 | (status & USBPORTSC_CCS) ? " Connected" : ""); | |
1da177e4 LT |
276 | } |
277 | ||
13996ca7 | 278 | static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf) |
c8f4fe43 | 279 | { |
c8f4fe43 AS |
280 | char *rh_state; |
281 | ||
c8f4fe43 AS |
282 | switch (uhci->rh_state) { |
283 | case UHCI_RH_RESET: | |
284 | rh_state = "reset"; break; | |
285 | case UHCI_RH_SUSPENDED: | |
286 | rh_state = "suspended"; break; | |
287 | case UHCI_RH_AUTO_STOPPED: | |
288 | rh_state = "auto-stopped"; break; | |
289 | case UHCI_RH_RESUMING: | |
290 | rh_state = "resuming"; break; | |
291 | case UHCI_RH_SUSPENDING: | |
292 | rh_state = "suspending"; break; | |
293 | case UHCI_RH_RUNNING: | |
294 | rh_state = "running"; break; | |
295 | case UHCI_RH_RUNNING_NODEVS: | |
296 | rh_state = "running, no devs"; break; | |
297 | default: | |
298 | rh_state = "?"; break; | |
299 | } | |
13996ca7 | 300 | return sprintf(buf, "Root-hub state: %s FSBR: %d\n", |
84afddd7 | 301 | rh_state, uhci->fsbr_is_on); |
c8f4fe43 AS |
302 | } |
303 | ||
1da177e4 LT |
304 | static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len) |
305 | { | |
306 | char *out = buf; | |
1da177e4 LT |
307 | unsigned short usbcmd, usbstat, usbint, usbfrnum; |
308 | unsigned int flbaseadd; | |
309 | unsigned char sof; | |
310 | unsigned short portsc1, portsc2; | |
311 | ||
1da177e4 | 312 | |
f1125f81 DCZ |
313 | usbcmd = uhci_readw(uhci, USBCMD); |
314 | usbstat = uhci_readw(uhci, USBSTS); | |
315 | usbint = uhci_readw(uhci, USBINTR); | |
316 | usbfrnum = uhci_readw(uhci, USBFRNUM); | |
317 | flbaseadd = uhci_readl(uhci, USBFLBASEADD); | |
318 | sof = uhci_readb(uhci, USBSOF); | |
319 | portsc1 = uhci_readw(uhci, USBPORTSC1); | |
320 | portsc2 = uhci_readw(uhci, USBPORTSC2); | |
1da177e4 LT |
321 | |
322 | out += sprintf(out, " usbcmd = %04x %s%s%s%s%s%s%s%s\n", | |
323 | usbcmd, | |
324 | (usbcmd & USBCMD_MAXP) ? "Maxp64 " : "Maxp32 ", | |
325 | (usbcmd & USBCMD_CF) ? "CF " : "", | |
326 | (usbcmd & USBCMD_SWDBG) ? "SWDBG " : "", | |
327 | (usbcmd & USBCMD_FGR) ? "FGR " : "", | |
328 | (usbcmd & USBCMD_EGSM) ? "EGSM " : "", | |
329 | (usbcmd & USBCMD_GRESET) ? "GRESET " : "", | |
330 | (usbcmd & USBCMD_HCRESET) ? "HCRESET " : "", | |
331 | (usbcmd & USBCMD_RS) ? "RS " : ""); | |
13996ca7 CG |
332 | if (out - buf > len) |
333 | goto done; | |
1da177e4 LT |
334 | |
335 | out += sprintf(out, " usbstat = %04x %s%s%s%s%s%s\n", | |
336 | usbstat, | |
337 | (usbstat & USBSTS_HCH) ? "HCHalted " : "", | |
338 | (usbstat & USBSTS_HCPE) ? "HostControllerProcessError " : "", | |
339 | (usbstat & USBSTS_HSE) ? "HostSystemError " : "", | |
340 | (usbstat & USBSTS_RD) ? "ResumeDetect " : "", | |
341 | (usbstat & USBSTS_ERROR) ? "USBError " : "", | |
342 | (usbstat & USBSTS_USBINT) ? "USBINT " : ""); | |
13996ca7 CG |
343 | if (out - buf > len) |
344 | goto done; | |
1da177e4 LT |
345 | |
346 | out += sprintf(out, " usbint = %04x\n", usbint); | |
347 | out += sprintf(out, " usbfrnum = (%d)%03x\n", (usbfrnum >> 10) & 1, | |
348 | 0xfff & (4*(unsigned int)usbfrnum)); | |
349 | out += sprintf(out, " flbaseadd = %08x\n", flbaseadd); | |
350 | out += sprintf(out, " sof = %02x\n", sof); | |
13996ca7 CG |
351 | if (out - buf > len) |
352 | goto done; | |
353 | ||
354 | out += uhci_show_sc(1, portsc1, out); | |
355 | if (out - buf > len) | |
356 | goto done; | |
357 | ||
358 | out += uhci_show_sc(2, portsc2, out); | |
359 | if (out - buf > len) | |
360 | goto done; | |
361 | ||
362 | out += sprintf(out, | |
363 | "Most recent frame: %x (%d) Last ISO frame: %x (%d)\n", | |
c8155cc5 AS |
364 | uhci->frame_number, uhci->frame_number & 1023, |
365 | uhci->last_iso_frame, uhci->last_iso_frame & 1023); | |
1da177e4 | 366 | |
13996ca7 CG |
367 | done: |
368 | if (out - buf > len) | |
369 | out += sprintf(out, " ...\n"); | |
1da177e4 LT |
370 | return out - buf; |
371 | } | |
372 | ||
1da177e4 LT |
373 | static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) |
374 | { | |
1da177e4 LT |
375 | char *out = buf; |
376 | int i, j; | |
377 | struct uhci_qh *qh; | |
378 | struct uhci_td *td; | |
379 | struct list_head *tmp, *head; | |
f3fe239b | 380 | int nframes, nerrs; |
51e2f62f JA |
381 | __hc32 link; |
382 | __hc32 fsbr_link; | |
17230acd AS |
383 | |
384 | static const char * const qh_names[] = { | |
385 | "unlink", "iso", "int128", "int64", "int32", "int16", | |
386 | "int8", "int4", "int2", "async", "term" | |
387 | }; | |
1da177e4 | 388 | |
13996ca7 CG |
389 | out += uhci_show_root_hub_state(uhci, out); |
390 | if (out - buf > len) | |
391 | goto done; | |
1da177e4 LT |
392 | out += sprintf(out, "HC status\n"); |
393 | out += uhci_show_status(uhci, out, len - (out - buf)); | |
13996ca7 CG |
394 | if (out - buf > len) |
395 | goto tail; | |
3ca2a321 AS |
396 | |
397 | out += sprintf(out, "Periodic load table\n"); | |
398 | for (i = 0; i < MAX_PHASE; ++i) { | |
399 | out += sprintf(out, "\t%d", uhci->load[i]); | |
400 | if (i % 8 == 7) | |
401 | *out++ = '\n'; | |
402 | } | |
403 | out += sprintf(out, "Total: %d, #INT: %d, #ISO: %d\n", | |
404 | uhci->total_load, | |
405 | uhci_to_hcd(uhci)->self.bandwidth_int_reqs, | |
406 | uhci_to_hcd(uhci)->self.bandwidth_isoc_reqs); | |
dccf4a48 | 407 | if (debug <= 1) |
13996ca7 | 408 | goto tail; |
1da177e4 LT |
409 | |
410 | out += sprintf(out, "Frame List\n"); | |
f3fe239b AS |
411 | nframes = 10; |
412 | nerrs = 0; | |
1da177e4 | 413 | for (i = 0; i < UHCI_NUMFRAMES; ++i) { |
51e2f62f | 414 | __hc32 qh_dma; |
f3fe239b | 415 | |
13996ca7 CG |
416 | if (out - buf > len) |
417 | goto done; | |
f3fe239b | 418 | j = 0; |
a1d59ce8 | 419 | td = uhci->frame_cpu[i]; |
f3fe239b | 420 | link = uhci->frame[i]; |
1da177e4 | 421 | if (!td) |
f3fe239b | 422 | goto check_link; |
1da177e4 | 423 | |
f3fe239b AS |
424 | if (nframes > 0) { |
425 | out += sprintf(out, "- Frame %d -> (%08x)\n", | |
51e2f62f | 426 | i, hc32_to_cpu(uhci, link)); |
f3fe239b AS |
427 | j = 1; |
428 | } | |
1da177e4 LT |
429 | |
430 | head = &td->fl_list; | |
431 | tmp = head; | |
432 | do { | |
433 | td = list_entry(tmp, struct uhci_td, fl_list); | |
434 | tmp = tmp->next; | |
51e2f62f | 435 | if (link != LINK_TO_TD(uhci, td)) { |
13996ca7 | 436 | if (nframes > 0) { |
3171fcab CG |
437 | out += sprintf(out, |
438 | " link does not match list entry!\n"); | |
13996ca7 CG |
439 | if (out - buf > len) |
440 | goto done; | |
441 | } else | |
f3fe239b AS |
442 | ++nerrs; |
443 | } | |
13996ca7 | 444 | if (nframes > 0) { |
51e2f62f | 445 | out += uhci_show_td(uhci, td, out, |
f3fe239b | 446 | len - (out - buf), 4); |
13996ca7 CG |
447 | if (out - buf > len) |
448 | goto tail; | |
449 | } | |
f3fe239b | 450 | link = td->link; |
1da177e4 | 451 | } while (tmp != head); |
f3fe239b AS |
452 | |
453 | check_link: | |
454 | qh_dma = uhci_frame_skel_link(uhci, i); | |
455 | if (link != qh_dma) { | |
456 | if (nframes > 0) { | |
457 | if (!j) { | |
458 | out += sprintf(out, | |
459 | "- Frame %d -> (%08x)\n", | |
51e2f62f | 460 | i, hc32_to_cpu(uhci, link)); |
f3fe239b AS |
461 | j = 1; |
462 | } | |
3171fcab CG |
463 | out += sprintf(out, |
464 | " link does not match QH (%08x)!\n", | |
51e2f62f | 465 | hc32_to_cpu(uhci, qh_dma)); |
13996ca7 CG |
466 | if (out - buf > len) |
467 | goto done; | |
f3fe239b AS |
468 | } else |
469 | ++nerrs; | |
470 | } | |
471 | nframes -= j; | |
1da177e4 | 472 | } |
f3fe239b AS |
473 | if (nerrs > 0) |
474 | out += sprintf(out, "Skipped %d bad links\n", nerrs); | |
1da177e4 | 475 | |
687f5f34 | 476 | out += sprintf(out, "Skeleton QHs\n"); |
1da177e4 | 477 | |
13996ca7 CG |
478 | if (out - buf > len) |
479 | goto done; | |
480 | ||
e009f1b2 | 481 | fsbr_link = 0; |
1da177e4 | 482 | for (i = 0; i < UHCI_NUM_SKELQH; ++i) { |
dccf4a48 | 483 | int cnt = 0; |
1da177e4 LT |
484 | |
485 | qh = uhci->skelqh[i]; | |
3171fcab | 486 | out += sprintf(out, "- skel_%s_qh\n", qh_names[i]); |
e009f1b2 | 487 | out += uhci_show_qh(uhci, qh, out, len - (out - buf), 4); |
13996ca7 CG |
488 | if (out - buf > len) |
489 | goto tail; | |
1da177e4 LT |
490 | |
491 | /* Last QH is the Terminating QH, it's different */ | |
17230acd | 492 | if (i == SKEL_TERM) { |
13996ca7 | 493 | if (qh_element(qh) != LINK_TO_TD(uhci, uhci->term_td)) { |
3171fcab CG |
494 | out += sprintf(out, |
495 | " skel_term_qh element is not set to term_td!\n"); | |
13996ca7 CG |
496 | if (out - buf > len) |
497 | goto done; | |
498 | } | |
e009f1b2 AS |
499 | link = fsbr_link; |
500 | if (!link) | |
51e2f62f | 501 | link = LINK_TO_QH(uhci, uhci->skel_term_qh); |
e009f1b2 | 502 | goto check_qh_link; |
1da177e4 LT |
503 | } |
504 | ||
dccf4a48 | 505 | head = &qh->node; |
1da177e4 LT |
506 | tmp = head->next; |
507 | ||
508 | while (tmp != head) { | |
dccf4a48 | 509 | qh = list_entry(tmp, struct uhci_qh, node); |
1da177e4 | 510 | tmp = tmp->next; |
13996ca7 | 511 | if (++cnt <= 10) { |
e009f1b2 | 512 | out += uhci_show_qh(uhci, qh, out, |
dccf4a48 | 513 | len - (out - buf), 4); |
13996ca7 CG |
514 | if (out - buf > len) |
515 | goto tail; | |
516 | } | |
17230acd | 517 | if (!fsbr_link && qh->skel >= SKEL_FSBR) |
51e2f62f | 518 | fsbr_link = LINK_TO_QH(uhci, qh); |
1da177e4 | 519 | } |
dccf4a48 AS |
520 | if ((cnt -= 10) > 0) |
521 | out += sprintf(out, " Skipped %d QHs\n", cnt); | |
1da177e4 | 522 | |
51e2f62f | 523 | link = UHCI_PTR_TERM(uhci); |
17230acd AS |
524 | if (i <= SKEL_ISO) |
525 | ; | |
526 | else if (i < SKEL_ASYNC) | |
51e2f62f | 527 | link = LINK_TO_QH(uhci, uhci->skel_async_qh); |
17230acd AS |
528 | else if (!uhci->fsbr_is_on) |
529 | ; | |
17230acd | 530 | else |
51e2f62f | 531 | link = LINK_TO_QH(uhci, uhci->skel_term_qh); |
17230acd AS |
532 | check_qh_link: |
533 | if (qh->link != link) | |
3171fcab CG |
534 | out += sprintf(out, |
535 | " last QH not linked to next skeleton!\n"); | |
13996ca7 CG |
536 | |
537 | if (out - buf > len) | |
538 | goto done; | |
1da177e4 LT |
539 | } |
540 | ||
13996ca7 CG |
541 | done: |
542 | if (out - buf > len) | |
543 | out += sprintf(out, " ...\n"); | |
544 | tail: | |
1da177e4 LT |
545 | return out - buf; |
546 | } | |
547 | ||
8d402e1a AS |
548 | #ifdef CONFIG_DEBUG_FS |
549 | ||
1da177e4 LT |
550 | #define MAX_OUTPUT (64 * 1024) |
551 | ||
552 | struct uhci_debug { | |
553 | int size; | |
554 | char *data; | |
1da177e4 LT |
555 | }; |
556 | ||
557 | static int uhci_debug_open(struct inode *inode, struct file *file) | |
558 | { | |
8e18e294 | 559 | struct uhci_hcd *uhci = inode->i_private; |
1da177e4 | 560 | struct uhci_debug *up; |
dccf4a48 | 561 | unsigned long flags; |
1da177e4 | 562 | |
1da177e4 LT |
563 | up = kmalloc(sizeof(*up), GFP_KERNEL); |
564 | if (!up) | |
00b81fb2 | 565 | return -ENOMEM; |
1da177e4 LT |
566 | |
567 | up->data = kmalloc(MAX_OUTPUT, GFP_KERNEL); | |
568 | if (!up->data) { | |
569 | kfree(up); | |
00b81fb2 | 570 | return -ENOMEM; |
1da177e4 LT |
571 | } |
572 | ||
8d402e1a | 573 | up->size = 0; |
dccf4a48 | 574 | spin_lock_irqsave(&uhci->lock, flags); |
8d402e1a | 575 | if (uhci->is_initialized) |
13996ca7 CG |
576 | up->size = uhci_sprint_schedule(uhci, up->data, |
577 | MAX_OUTPUT - EXTRA_SPACE); | |
dccf4a48 | 578 | spin_unlock_irqrestore(&uhci->lock, flags); |
1da177e4 LT |
579 | |
580 | file->private_data = up; | |
581 | ||
00b81fb2 | 582 | return 0; |
1da177e4 LT |
583 | } |
584 | ||
585 | static loff_t uhci_debug_lseek(struct file *file, loff_t off, int whence) | |
586 | { | |
b25472f9 AV |
587 | struct uhci_debug *up = file->private_data; |
588 | return no_seek_end_llseek_size(file, off, whence, up->size); | |
1da177e4 LT |
589 | } |
590 | ||
591 | static ssize_t uhci_debug_read(struct file *file, char __user *buf, | |
592 | size_t nbytes, loff_t *ppos) | |
593 | { | |
594 | struct uhci_debug *up = file->private_data; | |
595 | return simple_read_from_buffer(buf, nbytes, ppos, up->data, up->size); | |
596 | } | |
597 | ||
598 | static int uhci_debug_release(struct inode *inode, struct file *file) | |
599 | { | |
600 | struct uhci_debug *up = file->private_data; | |
601 | ||
602 | kfree(up->data); | |
603 | kfree(up); | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
066202dd | 608 | static const struct file_operations uhci_debug_operations = { |
8d402e1a | 609 | .owner = THIS_MODULE, |
1da177e4 LT |
610 | .open = uhci_debug_open, |
611 | .llseek = uhci_debug_lseek, | |
612 | .read = uhci_debug_read, | |
613 | .release = uhci_debug_release, | |
614 | }; | |
b409214c | 615 | #define UHCI_DEBUG_OPS |
1da177e4 | 616 | |
8d402e1a | 617 | #endif /* CONFIG_DEBUG_FS */ |
1da177e4 | 618 | |
1c20163d | 619 | #else /* CONFIG_DYNAMIC_DEBUG*/ |
8d402e1a AS |
620 | |
621 | static inline void lprintk(char *buf) | |
622 | {} | |
623 | ||
e009f1b2 AS |
624 | static inline int uhci_show_qh(struct uhci_hcd *uhci, |
625 | struct uhci_qh *qh, char *buf, int len, int space) | |
8d402e1a AS |
626 | { |
627 | return 0; | |
628 | } | |
629 | ||
630 | static inline int uhci_sprint_schedule(struct uhci_hcd *uhci, | |
631 | char *buf, int len) | |
632 | { | |
633 | return 0; | |
634 | } | |
1da177e4 LT |
635 | |
636 | #endif |