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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2001-2002 by David Brownell | |
53bd6a60 | 3 | * |
1da177e4 LT |
4 | * This program is free software; you can redistribute it and/or modify it |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation; either version 2 of the License, or (at your | |
7 | * option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 | * for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software Foundation, | |
16 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | */ | |
18 | ||
19 | /* this file is part of ehci-hcd.c */ | |
20 | ||
21 | #define ehci_dbg(ehci, fmt, args...) \ | |
22 | dev_dbg (ehci_to_hcd(ehci)->self.controller , fmt , ## args ) | |
23 | #define ehci_err(ehci, fmt, args...) \ | |
24 | dev_err (ehci_to_hcd(ehci)->self.controller , fmt , ## args ) | |
25 | #define ehci_info(ehci, fmt, args...) \ | |
26 | dev_info (ehci_to_hcd(ehci)->self.controller , fmt , ## args ) | |
27 | #define ehci_warn(ehci, fmt, args...) \ | |
28 | dev_warn (ehci_to_hcd(ehci)->self.controller , fmt , ## args ) | |
29 | ||
9776afc8 | 30 | #ifdef VERBOSE_DEBUG |
1da177e4 LT |
31 | # define vdbg dbg |
32 | # define ehci_vdbg ehci_dbg | |
33 | #else | |
34 | # define vdbg(fmt,args...) do { } while (0) | |
35 | # define ehci_vdbg(ehci, fmt, args...) do { } while (0) | |
36 | #endif | |
37 | ||
38 | #ifdef DEBUG | |
39 | ||
40 | /* check the values in the HCSPARAMS register | |
41 | * (host controller _Structural_ parameters) | |
42 | * see EHCI spec, Table 2-4 for each value | |
43 | */ | |
44 | static void dbg_hcs_params (struct ehci_hcd *ehci, char *label) | |
45 | { | |
083522d7 | 46 | u32 params = ehci_readl(ehci, &ehci->caps->hcs_params); |
1da177e4 LT |
47 | |
48 | ehci_dbg (ehci, | |
49 | "%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n", | |
50 | label, params, | |
51 | HCS_DEBUG_PORT (params), | |
52 | HCS_INDICATOR (params) ? " ind" : "", | |
53 | HCS_N_CC (params), | |
54 | HCS_N_PCC (params), | |
6dbd682b | 55 | HCS_PORTROUTED (params) ? "" : " ordered", |
1da177e4 LT |
56 | HCS_PPC (params) ? "" : " !ppc", |
57 | HCS_N_PORTS (params) | |
58 | ); | |
59 | /* Port routing, per EHCI 0.95 Spec, Section 2.2.5 */ | |
60 | if (HCS_PORTROUTED (params)) { | |
61 | int i; | |
62 | char buf [46], tmp [7], byte; | |
63 | ||
64 | buf[0] = 0; | |
65 | for (i = 0; i < HCS_N_PORTS (params); i++) { | |
66 | // FIXME MIPS won't readb() ... | |
67 | byte = readb (&ehci->caps->portroute[(i>>1)]); | |
53bd6a60 | 68 | sprintf(tmp, "%d ", |
1da177e4 LT |
69 | ((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf))); |
70 | strcat(buf, tmp); | |
71 | } | |
72 | ehci_dbg (ehci, "%s portroute %s\n", | |
73 | label, buf); | |
74 | } | |
75 | } | |
76 | #else | |
77 | ||
78 | static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {} | |
79 | ||
80 | #endif | |
81 | ||
82 | #ifdef DEBUG | |
83 | ||
84 | /* check the values in the HCCPARAMS register | |
85 | * (host controller _Capability_ parameters) | |
86 | * see EHCI Spec, Table 2-5 for each value | |
87 | * */ | |
88 | static void dbg_hcc_params (struct ehci_hcd *ehci, char *label) | |
89 | { | |
083522d7 | 90 | u32 params = ehci_readl(ehci, &ehci->caps->hcc_params); |
1da177e4 LT |
91 | |
92 | if (HCC_ISOC_CACHE (params)) { | |
93 | ehci_dbg (ehci, | |
6dbd682b SR |
94 | "%s hcc_params %04x caching frame %s%s%s\n", |
95 | label, params, | |
96 | HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", | |
97 | HCC_CANPARK(params) ? " park" : "", | |
98 | HCC_64BIT_ADDR(params) ? " 64 bit addr" : ""); | |
1da177e4 LT |
99 | } else { |
100 | ehci_dbg (ehci, | |
6dbd682b SR |
101 | "%s hcc_params %04x thresh %d uframes %s%s%s\n", |
102 | label, | |
103 | params, | |
104 | HCC_ISOC_THRES(params), | |
105 | HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", | |
106 | HCC_CANPARK(params) ? " park" : "", | |
107 | HCC_64BIT_ADDR(params) ? " 64 bit addr" : ""); | |
1da177e4 LT |
108 | } |
109 | } | |
110 | #else | |
111 | ||
112 | static inline void dbg_hcc_params (struct ehci_hcd *ehci, char *label) {} | |
113 | ||
114 | #endif | |
115 | ||
116 | #ifdef DEBUG | |
117 | ||
8234509c | 118 | static void __maybe_unused |
1da177e4 LT |
119 | dbg_qtd (const char *label, struct ehci_hcd *ehci, struct ehci_qtd *qtd) |
120 | { | |
6dbd682b SR |
121 | ehci_dbg(ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd, |
122 | hc32_to_cpup(ehci, &qtd->hw_next), | |
123 | hc32_to_cpup(ehci, &qtd->hw_alt_next), | |
124 | hc32_to_cpup(ehci, &qtd->hw_token), | |
125 | hc32_to_cpup(ehci, &qtd->hw_buf [0])); | |
1da177e4 | 126 | if (qtd->hw_buf [1]) |
6dbd682b SR |
127 | ehci_dbg(ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n", |
128 | hc32_to_cpup(ehci, &qtd->hw_buf[1]), | |
129 | hc32_to_cpup(ehci, &qtd->hw_buf[2]), | |
130 | hc32_to_cpup(ehci, &qtd->hw_buf[3]), | |
131 | hc32_to_cpup(ehci, &qtd->hw_buf[4])); | |
1da177e4 LT |
132 | } |
133 | ||
8234509c | 134 | static void __maybe_unused |
1da177e4 LT |
135 | dbg_qh (const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) |
136 | { | |
137 | ehci_dbg (ehci, "%s qh %p n%08x info %x %x qtd %x\n", label, | |
138 | qh, qh->hw_next, qh->hw_info1, qh->hw_info2, | |
139 | qh->hw_current); | |
140 | dbg_qtd ("overlay", ehci, (struct ehci_qtd *) &qh->hw_qtd_next); | |
141 | } | |
142 | ||
8234509c | 143 | static void __maybe_unused |
53bd6a60 | 144 | dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd) |
1da177e4 LT |
145 | { |
146 | ehci_dbg (ehci, "%s [%d] itd %p, next %08x, urb %p\n", | |
6dbd682b SR |
147 | label, itd->frame, itd, hc32_to_cpu(ehci, itd->hw_next), |
148 | itd->urb); | |
1da177e4 | 149 | ehci_dbg (ehci, |
53bd6a60 | 150 | " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n", |
6dbd682b SR |
151 | hc32_to_cpu(ehci, itd->hw_transaction[0]), |
152 | hc32_to_cpu(ehci, itd->hw_transaction[1]), | |
153 | hc32_to_cpu(ehci, itd->hw_transaction[2]), | |
154 | hc32_to_cpu(ehci, itd->hw_transaction[3]), | |
155 | hc32_to_cpu(ehci, itd->hw_transaction[4]), | |
156 | hc32_to_cpu(ehci, itd->hw_transaction[5]), | |
157 | hc32_to_cpu(ehci, itd->hw_transaction[6]), | |
158 | hc32_to_cpu(ehci, itd->hw_transaction[7])); | |
1da177e4 | 159 | ehci_dbg (ehci, |
53bd6a60 | 160 | " buf: %08x %08x %08x %08x %08x %08x %08x\n", |
6dbd682b SR |
161 | hc32_to_cpu(ehci, itd->hw_bufp[0]), |
162 | hc32_to_cpu(ehci, itd->hw_bufp[1]), | |
163 | hc32_to_cpu(ehci, itd->hw_bufp[2]), | |
164 | hc32_to_cpu(ehci, itd->hw_bufp[3]), | |
165 | hc32_to_cpu(ehci, itd->hw_bufp[4]), | |
166 | hc32_to_cpu(ehci, itd->hw_bufp[5]), | |
167 | hc32_to_cpu(ehci, itd->hw_bufp[6])); | |
1da177e4 LT |
168 | ehci_dbg (ehci, " index: %d %d %d %d %d %d %d %d\n", |
169 | itd->index[0], itd->index[1], itd->index[2], | |
170 | itd->index[3], itd->index[4], itd->index[5], | |
171 | itd->index[6], itd->index[7]); | |
172 | } | |
173 | ||
8234509c | 174 | static void __maybe_unused |
53bd6a60 | 175 | dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd) |
1da177e4 LT |
176 | { |
177 | ehci_dbg (ehci, "%s [%d] sitd %p, next %08x, urb %p\n", | |
6dbd682b SR |
178 | label, sitd->frame, sitd, hc32_to_cpu(ehci, sitd->hw_next), |
179 | sitd->urb); | |
1da177e4 | 180 | ehci_dbg (ehci, |
53bd6a60 | 181 | " addr %08x sched %04x result %08x buf %08x %08x\n", |
6dbd682b SR |
182 | hc32_to_cpu(ehci, sitd->hw_fullspeed_ep), |
183 | hc32_to_cpu(ehci, sitd->hw_uframe), | |
184 | hc32_to_cpu(ehci, sitd->hw_results), | |
185 | hc32_to_cpu(ehci, sitd->hw_buf[0]), | |
186 | hc32_to_cpu(ehci, sitd->hw_buf[1])); | |
1da177e4 LT |
187 | } |
188 | ||
8234509c | 189 | static int __maybe_unused |
1da177e4 LT |
190 | dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) |
191 | { | |
192 | return scnprintf (buf, len, | |
193 | "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s", | |
194 | label, label [0] ? " " : "", status, | |
195 | (status & STS_ASS) ? " Async" : "", | |
196 | (status & STS_PSS) ? " Periodic" : "", | |
197 | (status & STS_RECL) ? " Recl" : "", | |
198 | (status & STS_HALT) ? " Halt" : "", | |
199 | (status & STS_IAA) ? " IAA" : "", | |
200 | (status & STS_FATAL) ? " FATAL" : "", | |
201 | (status & STS_FLR) ? " FLR" : "", | |
202 | (status & STS_PCD) ? " PCD" : "", | |
203 | (status & STS_ERR) ? " ERR" : "", | |
204 | (status & STS_INT) ? " INT" : "" | |
205 | ); | |
206 | } | |
207 | ||
8234509c | 208 | static int __maybe_unused |
1da177e4 LT |
209 | dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable) |
210 | { | |
211 | return scnprintf (buf, len, | |
212 | "%s%sintrenable %02x%s%s%s%s%s%s", | |
213 | label, label [0] ? " " : "", enable, | |
214 | (enable & STS_IAA) ? " IAA" : "", | |
215 | (enable & STS_FATAL) ? " FATAL" : "", | |
216 | (enable & STS_FLR) ? " FLR" : "", | |
217 | (enable & STS_PCD) ? " PCD" : "", | |
218 | (enable & STS_ERR) ? " ERR" : "", | |
219 | (enable & STS_INT) ? " INT" : "" | |
220 | ); | |
221 | } | |
222 | ||
223 | static const char *const fls_strings [] = | |
224 | { "1024", "512", "256", "??" }; | |
225 | ||
226 | static int | |
227 | dbg_command_buf (char *buf, unsigned len, const char *label, u32 command) | |
228 | { | |
229 | return scnprintf (buf, len, | |
230 | "%s%scommand %06x %s=%d ithresh=%d%s%s%s%s period=%s%s %s", | |
231 | label, label [0] ? " " : "", command, | |
232 | (command & CMD_PARK) ? "park" : "(park)", | |
233 | CMD_PARK_CNT (command), | |
234 | (command >> 16) & 0x3f, | |
235 | (command & CMD_LRESET) ? " LReset" : "", | |
236 | (command & CMD_IAAD) ? " IAAD" : "", | |
237 | (command & CMD_ASE) ? " Async" : "", | |
238 | (command & CMD_PSE) ? " Periodic" : "", | |
239 | fls_strings [(command >> 2) & 0x3], | |
240 | (command & CMD_RESET) ? " Reset" : "", | |
241 | (command & CMD_RUN) ? "RUN" : "HALT" | |
242 | ); | |
243 | } | |
244 | ||
245 | static int | |
246 | dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) | |
247 | { | |
248 | char *sig; | |
249 | ||
250 | /* signaling state */ | |
251 | switch (status & (3 << 10)) { | |
252 | case 0 << 10: sig = "se0"; break; | |
253 | case 1 << 10: sig = "k"; break; /* low speed */ | |
254 | case 2 << 10: sig = "j"; break; | |
255 | default: sig = "?"; break; | |
256 | } | |
257 | ||
258 | return scnprintf (buf, len, | |
d49d4317 | 259 | "%s%sport %d status %06x%s%s sig=%s%s%s%s%s%s%s%s%s%s", |
1da177e4 LT |
260 | label, label [0] ? " " : "", port, status, |
261 | (status & PORT_POWER) ? " POWER" : "", | |
262 | (status & PORT_OWNER) ? " OWNER" : "", | |
263 | sig, | |
264 | (status & PORT_RESET) ? " RESET" : "", | |
265 | (status & PORT_SUSPEND) ? " SUSPEND" : "", | |
266 | (status & PORT_RESUME) ? " RESUME" : "", | |
267 | (status & PORT_OCC) ? " OCC" : "", | |
268 | (status & PORT_OC) ? " OC" : "", | |
269 | (status & PORT_PEC) ? " PEC" : "", | |
270 | (status & PORT_PE) ? " PE" : "", | |
271 | (status & PORT_CSC) ? " CSC" : "", | |
6dbd682b | 272 | (status & PORT_CONNECT) ? " CONNECT" : ""); |
1da177e4 LT |
273 | } |
274 | ||
275 | #else | |
8234509c | 276 | static inline void __maybe_unused |
1da177e4 LT |
277 | dbg_qh (char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) |
278 | {} | |
279 | ||
8234509c | 280 | static inline int __maybe_unused |
1da177e4 LT |
281 | dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) |
282 | { return 0; } | |
283 | ||
8234509c | 284 | static inline int __maybe_unused |
1da177e4 LT |
285 | dbg_command_buf (char *buf, unsigned len, const char *label, u32 command) |
286 | { return 0; } | |
287 | ||
8234509c | 288 | static inline int __maybe_unused |
1da177e4 LT |
289 | dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable) |
290 | { return 0; } | |
291 | ||
8234509c | 292 | static inline int __maybe_unused |
1da177e4 LT |
293 | dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) |
294 | { return 0; } | |
295 | ||
296 | #endif /* DEBUG */ | |
297 | ||
298 | /* functions have the "wrong" filename when they're output... */ | |
299 | #define dbg_status(ehci, label, status) { \ | |
300 | char _buf [80]; \ | |
301 | dbg_status_buf (_buf, sizeof _buf, label, status); \ | |
302 | ehci_dbg (ehci, "%s\n", _buf); \ | |
303 | } | |
304 | ||
305 | #define dbg_cmd(ehci, label, command) { \ | |
306 | char _buf [80]; \ | |
307 | dbg_command_buf (_buf, sizeof _buf, label, command); \ | |
308 | ehci_dbg (ehci, "%s\n", _buf); \ | |
309 | } | |
310 | ||
311 | #define dbg_port(ehci, label, port, status) { \ | |
312 | char _buf [80]; \ | |
313 | dbg_port_buf (_buf, sizeof _buf, label, port, status); \ | |
314 | ehci_dbg (ehci, "%s\n", _buf); \ | |
315 | } | |
316 | ||
317 | /*-------------------------------------------------------------------------*/ | |
318 | ||
319 | #ifdef STUB_DEBUG_FILES | |
320 | ||
321 | static inline void create_debug_files (struct ehci_hcd *bus) { } | |
322 | static inline void remove_debug_files (struct ehci_hcd *bus) { } | |
323 | ||
324 | #else | |
325 | ||
694cc208 TJ |
326 | /* troubleshooting help: expose state in debugfs */ |
327 | ||
328 | static int debug_async_open(struct inode *, struct file *); | |
329 | static int debug_periodic_open(struct inode *, struct file *); | |
330 | static int debug_registers_open(struct inode *, struct file *); | |
331 | static int debug_async_open(struct inode *, struct file *); | |
332 | static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); | |
333 | static int debug_close(struct inode *, struct file *); | |
334 | ||
335 | static const struct file_operations debug_async_fops = { | |
336 | .owner = THIS_MODULE, | |
337 | .open = debug_async_open, | |
338 | .read = debug_output, | |
339 | .release = debug_close, | |
340 | }; | |
341 | static const struct file_operations debug_periodic_fops = { | |
342 | .owner = THIS_MODULE, | |
343 | .open = debug_periodic_open, | |
344 | .read = debug_output, | |
345 | .release = debug_close, | |
346 | }; | |
347 | static const struct file_operations debug_registers_fops = { | |
348 | .owner = THIS_MODULE, | |
349 | .open = debug_registers_open, | |
350 | .read = debug_output, | |
351 | .release = debug_close, | |
352 | }; | |
353 | ||
354 | static struct dentry *ehci_debug_root; | |
355 | ||
356 | struct debug_buffer { | |
357 | ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ | |
358 | struct usb_bus *bus; | |
359 | struct mutex mutex; /* protect filling of buffer */ | |
360 | size_t count; /* number of characters filled into buffer */ | |
361 | char *page; | |
362 | }; | |
1da177e4 LT |
363 | |
364 | #define speed_char(info1) ({ char tmp; \ | |
365 | switch (info1 & (3 << 12)) { \ | |
366 | case 0 << 12: tmp = 'f'; break; \ | |
367 | case 1 << 12: tmp = 'l'; break; \ | |
368 | case 2 << 12: tmp = 'h'; break; \ | |
369 | default: tmp = '?'; break; \ | |
370 | }; tmp; }) | |
371 | ||
6dbd682b | 372 | static inline char token_mark(struct ehci_hcd *ehci, __hc32 token) |
1da177e4 | 373 | { |
6dbd682b SR |
374 | __u32 v = hc32_to_cpu(ehci, token); |
375 | ||
1da177e4 LT |
376 | if (v & QTD_STS_ACTIVE) |
377 | return '*'; | |
378 | if (v & QTD_STS_HALT) | |
379 | return '-'; | |
380 | if (!IS_SHORT_READ (v)) | |
381 | return ' '; | |
382 | /* tries to advance through hw_alt_next */ | |
383 | return '/'; | |
384 | } | |
385 | ||
386 | static void qh_lines ( | |
387 | struct ehci_hcd *ehci, | |
388 | struct ehci_qh *qh, | |
389 | char **nextp, | |
390 | unsigned *sizep | |
391 | ) | |
392 | { | |
393 | u32 scratch; | |
394 | u32 hw_curr; | |
395 | struct list_head *entry; | |
396 | struct ehci_qtd *td; | |
397 | unsigned temp; | |
398 | unsigned size = *sizep; | |
399 | char *next = *nextp; | |
400 | char mark; | |
fd05e720 | 401 | __le32 list_end = EHCI_LIST_END(ehci); |
1da177e4 | 402 | |
6dbd682b | 403 | if (qh->hw_qtd_next == list_end) /* NEC does this */ |
1da177e4 LT |
404 | mark = '@'; |
405 | else | |
6dbd682b | 406 | mark = token_mark(ehci, qh->hw_token); |
1da177e4 | 407 | if (mark == '/') { /* qh_alt_next controls qh advance? */ |
6dbd682b SR |
408 | if ((qh->hw_alt_next & QTD_MASK(ehci)) |
409 | == ehci->async->hw_alt_next) | |
1da177e4 | 410 | mark = '#'; /* blocked */ |
6dbd682b | 411 | else if (qh->hw_alt_next == list_end) |
1da177e4 LT |
412 | mark = '.'; /* use hw_qtd_next */ |
413 | /* else alt_next points to some other qtd */ | |
414 | } | |
6dbd682b SR |
415 | scratch = hc32_to_cpup(ehci, &qh->hw_info1); |
416 | hw_curr = (mark == '*') ? hc32_to_cpup(ehci, &qh->hw_current) : 0; | |
1da177e4 LT |
417 | temp = scnprintf (next, size, |
418 | "qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)", | |
419 | qh, scratch & 0x007f, | |
420 | speed_char (scratch), | |
421 | (scratch >> 8) & 0x000f, | |
6dbd682b SR |
422 | scratch, hc32_to_cpup(ehci, &qh->hw_info2), |
423 | hc32_to_cpup(ehci, &qh->hw_token), mark, | |
424 | (cpu_to_hc32(ehci, QTD_TOGGLE) & qh->hw_token) | |
1da177e4 | 425 | ? "data1" : "data0", |
6dbd682b | 426 | (hc32_to_cpup(ehci, &qh->hw_alt_next) >> 1) & 0x0f); |
1da177e4 LT |
427 | size -= temp; |
428 | next += temp; | |
429 | ||
430 | /* hc may be modifying the list as we read it ... */ | |
431 | list_for_each (entry, &qh->qtd_list) { | |
432 | td = list_entry (entry, struct ehci_qtd, qtd_list); | |
6dbd682b | 433 | scratch = hc32_to_cpup(ehci, &td->hw_token); |
1da177e4 LT |
434 | mark = ' '; |
435 | if (hw_curr == td->qtd_dma) | |
436 | mark = '*'; | |
6dbd682b | 437 | else if (qh->hw_qtd_next == cpu_to_hc32(ehci, td->qtd_dma)) |
1da177e4 LT |
438 | mark = '+'; |
439 | else if (QTD_LENGTH (scratch)) { | |
440 | if (td->hw_alt_next == ehci->async->hw_alt_next) | |
441 | mark = '#'; | |
6dbd682b | 442 | else if (td->hw_alt_next != list_end) |
1da177e4 LT |
443 | mark = '/'; |
444 | } | |
445 | temp = snprintf (next, size, | |
446 | "\n\t%p%c%s len=%d %08x urb %p", | |
447 | td, mark, ({ char *tmp; | |
448 | switch ((scratch>>8)&0x03) { | |
449 | case 0: tmp = "out"; break; | |
450 | case 1: tmp = "in"; break; | |
451 | case 2: tmp = "setup"; break; | |
452 | default: tmp = "?"; break; | |
453 | } tmp;}), | |
454 | (scratch >> 16) & 0x7fff, | |
455 | scratch, | |
456 | td->urb); | |
457 | if (temp < 0) | |
458 | temp = 0; | |
459 | else if (size < temp) | |
460 | temp = size; | |
461 | size -= temp; | |
462 | next += temp; | |
463 | if (temp == size) | |
464 | goto done; | |
465 | } | |
466 | ||
467 | temp = snprintf (next, size, "\n"); | |
468 | if (temp < 0) | |
469 | temp = 0; | |
470 | else if (size < temp) | |
471 | temp = size; | |
472 | size -= temp; | |
473 | next += temp; | |
474 | ||
475 | done: | |
476 | *sizep = size; | |
477 | *nextp = next; | |
478 | } | |
479 | ||
694cc208 | 480 | static ssize_t fill_async_buffer(struct debug_buffer *buf) |
1da177e4 | 481 | { |
1da177e4 LT |
482 | struct usb_hcd *hcd; |
483 | struct ehci_hcd *ehci; | |
484 | unsigned long flags; | |
485 | unsigned temp, size; | |
486 | char *next; | |
487 | struct ehci_qh *qh; | |
488 | ||
694cc208 | 489 | hcd = bus_to_hcd(buf->bus); |
1da177e4 | 490 | ehci = hcd_to_ehci (hcd); |
694cc208 | 491 | next = buf->page; |
1da177e4 LT |
492 | size = PAGE_SIZE; |
493 | ||
694cc208 TJ |
494 | *next = 0; |
495 | ||
1da177e4 LT |
496 | /* dumps a snapshot of the async schedule. |
497 | * usually empty except for long-term bulk reads, or head. | |
498 | * one QH per line, and TDs we know about | |
499 | */ | |
500 | spin_lock_irqsave (&ehci->lock, flags); | |
501 | for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh) | |
502 | qh_lines (ehci, qh, &next, &size); | |
503 | if (ehci->reclaim && size > 0) { | |
504 | temp = scnprintf (next, size, "\nreclaim =\n"); | |
505 | size -= temp; | |
506 | next += temp; | |
507 | ||
508 | for (qh = ehci->reclaim; size > 0 && qh; qh = qh->reclaim) | |
509 | qh_lines (ehci, qh, &next, &size); | |
510 | } | |
511 | spin_unlock_irqrestore (&ehci->lock, flags); | |
512 | ||
694cc208 | 513 | return strlen(buf->page); |
1da177e4 | 514 | } |
1da177e4 LT |
515 | |
516 | #define DBG_SCHED_LIMIT 64 | |
694cc208 | 517 | static ssize_t fill_periodic_buffer(struct debug_buffer *buf) |
1da177e4 | 518 | { |
1da177e4 LT |
519 | struct usb_hcd *hcd; |
520 | struct ehci_hcd *ehci; | |
521 | unsigned long flags; | |
522 | union ehci_shadow p, *seen; | |
523 | unsigned temp, size, seen_count; | |
524 | char *next; | |
525 | unsigned i; | |
6dbd682b | 526 | __hc32 tag; |
1da177e4 | 527 | |
54e6ecb2 | 528 | if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC))) |
1da177e4 LT |
529 | return 0; |
530 | seen_count = 0; | |
531 | ||
694cc208 | 532 | hcd = bus_to_hcd(buf->bus); |
1da177e4 | 533 | ehci = hcd_to_ehci (hcd); |
694cc208 | 534 | next = buf->page; |
1da177e4 LT |
535 | size = PAGE_SIZE; |
536 | ||
537 | temp = scnprintf (next, size, "size = %d\n", ehci->periodic_size); | |
538 | size -= temp; | |
539 | next += temp; | |
540 | ||
541 | /* dump a snapshot of the periodic schedule. | |
542 | * iso changes, interrupt usually doesn't. | |
543 | */ | |
544 | spin_lock_irqsave (&ehci->lock, flags); | |
545 | for (i = 0; i < ehci->periodic_size; i++) { | |
546 | p = ehci->pshadow [i]; | |
547 | if (likely (!p.ptr)) | |
548 | continue; | |
6dbd682b | 549 | tag = Q_NEXT_TYPE(ehci, ehci->periodic [i]); |
1da177e4 LT |
550 | |
551 | temp = scnprintf (next, size, "%4d: ", i); | |
552 | size -= temp; | |
553 | next += temp; | |
554 | ||
555 | do { | |
6dbd682b | 556 | switch (hc32_to_cpu(ehci, tag)) { |
1da177e4 LT |
557 | case Q_TYPE_QH: |
558 | temp = scnprintf (next, size, " qh%d-%04x/%p", | |
559 | p.qh->period, | |
6dbd682b SR |
560 | hc32_to_cpup(ehci, |
561 | &p.qh->hw_info2) | |
1da177e4 | 562 | /* uframe masks */ |
7dedacf4 | 563 | & (QH_CMASK | QH_SMASK), |
1da177e4 LT |
564 | p.qh); |
565 | size -= temp; | |
566 | next += temp; | |
567 | /* don't repeat what follows this qh */ | |
568 | for (temp = 0; temp < seen_count; temp++) { | |
569 | if (seen [temp].ptr != p.ptr) | |
570 | continue; | |
571 | if (p.qh->qh_next.ptr) | |
572 | temp = scnprintf (next, size, | |
573 | " ..."); | |
574 | p.ptr = NULL; | |
575 | break; | |
576 | } | |
577 | /* show more info the first time around */ | |
578 | if (temp == seen_count && p.ptr) { | |
6dbd682b | 579 | u32 scratch = hc32_to_cpup(ehci, |
1da177e4 LT |
580 | &p.qh->hw_info1); |
581 | struct ehci_qtd *qtd; | |
582 | char *type = ""; | |
583 | ||
584 | /* count tds, get ep direction */ | |
585 | temp = 0; | |
586 | list_for_each_entry (qtd, | |
587 | &p.qh->qtd_list, | |
588 | qtd_list) { | |
589 | temp++; | |
6dbd682b SR |
590 | switch (0x03 & (hc32_to_cpu( |
591 | ehci, | |
1da177e4 LT |
592 | qtd->hw_token) >> 8)) { |
593 | case 0: type = "out"; continue; | |
594 | case 1: type = "in"; continue; | |
595 | } | |
596 | } | |
597 | ||
598 | temp = scnprintf (next, size, | |
599 | " (%c%d ep%d%s " | |
600 | "[%d/%d] q%d p%d)", | |
601 | speed_char (scratch), | |
602 | scratch & 0x007f, | |
603 | (scratch >> 8) & 0x000f, type, | |
604 | p.qh->usecs, p.qh->c_usecs, | |
605 | temp, | |
606 | 0x7ff & (scratch >> 16)); | |
607 | ||
608 | if (seen_count < DBG_SCHED_LIMIT) | |
609 | seen [seen_count++].qh = p.qh; | |
610 | } else | |
611 | temp = 0; | |
612 | if (p.qh) { | |
6dbd682b | 613 | tag = Q_NEXT_TYPE(ehci, p.qh->hw_next); |
1da177e4 LT |
614 | p = p.qh->qh_next; |
615 | } | |
616 | break; | |
617 | case Q_TYPE_FSTN: | |
618 | temp = scnprintf (next, size, | |
619 | " fstn-%8x/%p", p.fstn->hw_prev, | |
620 | p.fstn); | |
6dbd682b | 621 | tag = Q_NEXT_TYPE(ehci, p.fstn->hw_next); |
1da177e4 LT |
622 | p = p.fstn->fstn_next; |
623 | break; | |
624 | case Q_TYPE_ITD: | |
625 | temp = scnprintf (next, size, | |
626 | " itd/%p", p.itd); | |
6dbd682b | 627 | tag = Q_NEXT_TYPE(ehci, p.itd->hw_next); |
1da177e4 LT |
628 | p = p.itd->itd_next; |
629 | break; | |
630 | case Q_TYPE_SITD: | |
631 | temp = scnprintf (next, size, | |
632 | " sitd%d-%04x/%p", | |
633 | p.sitd->stream->interval, | |
6dbd682b | 634 | hc32_to_cpup(ehci, &p.sitd->hw_uframe) |
1da177e4 LT |
635 | & 0x0000ffff, |
636 | p.sitd); | |
6dbd682b | 637 | tag = Q_NEXT_TYPE(ehci, p.sitd->hw_next); |
1da177e4 LT |
638 | p = p.sitd->sitd_next; |
639 | break; | |
640 | } | |
641 | size -= temp; | |
642 | next += temp; | |
643 | } while (p.ptr); | |
644 | ||
645 | temp = scnprintf (next, size, "\n"); | |
646 | size -= temp; | |
647 | next += temp; | |
648 | } | |
649 | spin_unlock_irqrestore (&ehci->lock, flags); | |
650 | kfree (seen); | |
651 | ||
652 | return PAGE_SIZE - size; | |
653 | } | |
1da177e4 LT |
654 | #undef DBG_SCHED_LIMIT |
655 | ||
694cc208 | 656 | static ssize_t fill_registers_buffer(struct debug_buffer *buf) |
1da177e4 | 657 | { |
1da177e4 LT |
658 | struct usb_hcd *hcd; |
659 | struct ehci_hcd *ehci; | |
660 | unsigned long flags; | |
661 | unsigned temp, size, i; | |
662 | char *next, scratch [80]; | |
663 | static char fmt [] = "%*s\n"; | |
664 | static char label [] = ""; | |
665 | ||
694cc208 | 666 | hcd = bus_to_hcd(buf->bus); |
1da177e4 | 667 | ehci = hcd_to_ehci (hcd); |
694cc208 | 668 | next = buf->page; |
1da177e4 LT |
669 | size = PAGE_SIZE; |
670 | ||
671 | spin_lock_irqsave (&ehci->lock, flags); | |
672 | ||
70a1c9e0 | 673 | if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) { |
1da177e4 LT |
674 | size = scnprintf (next, size, |
675 | "bus %s, device %s (driver " DRIVER_VERSION ")\n" | |
d49d4317 | 676 | "%s\n" |
1da177e4 LT |
677 | "SUSPENDED (no register access)\n", |
678 | hcd->self.controller->bus->name, | |
7071a3ce | 679 | dev_name(hcd->self.controller), |
d49d4317 | 680 | hcd->product_desc); |
1da177e4 LT |
681 | goto done; |
682 | } | |
683 | ||
684 | /* Capability Registers */ | |
083522d7 | 685 | i = HC_VERSION(ehci_readl(ehci, &ehci->caps->hc_capbase)); |
1da177e4 LT |
686 | temp = scnprintf (next, size, |
687 | "bus %s, device %s (driver " DRIVER_VERSION ")\n" | |
d49d4317 | 688 | "%s\n" |
1da177e4 LT |
689 | "EHCI %x.%02x, hcd state %d\n", |
690 | hcd->self.controller->bus->name, | |
7071a3ce | 691 | dev_name(hcd->self.controller), |
d49d4317 | 692 | hcd->product_desc, |
1da177e4 LT |
693 | i >> 8, i & 0x0ff, hcd->state); |
694 | size -= temp; | |
695 | next += temp; | |
696 | ||
d49d4317 DB |
697 | #ifdef CONFIG_PCI |
698 | /* EHCI 0.96 and later may have "extended capabilities" */ | |
699 | if (hcd->self.controller->bus == &pci_bus_type) { | |
700 | struct pci_dev *pdev; | |
701 | u32 offset, cap, cap2; | |
702 | unsigned count = 256/4; | |
703 | ||
704 | pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); | |
6dbd682b SR |
705 | offset = HCC_EXT_CAPS(ehci_readl(ehci, |
706 | &ehci->caps->hcc_params)); | |
d49d4317 DB |
707 | while (offset && count--) { |
708 | pci_read_config_dword (pdev, offset, &cap); | |
709 | switch (cap & 0xff) { | |
710 | case 1: | |
711 | temp = scnprintf (next, size, | |
712 | "ownership %08x%s%s\n", cap, | |
713 | (cap & (1 << 24)) ? " linux" : "", | |
714 | (cap & (1 << 16)) ? " firmware" : ""); | |
715 | size -= temp; | |
716 | next += temp; | |
717 | ||
718 | offset += 4; | |
719 | pci_read_config_dword (pdev, offset, &cap2); | |
720 | temp = scnprintf (next, size, | |
721 | "SMI sts/enable 0x%08x\n", cap2); | |
722 | size -= temp; | |
723 | next += temp; | |
724 | break; | |
725 | case 0: /* illegal reserved capability */ | |
726 | cap = 0; | |
727 | /* FALLTHROUGH */ | |
728 | default: /* unknown */ | |
729 | break; | |
730 | } | |
731 | temp = (cap >> 8) & 0xff; | |
732 | } | |
733 | } | |
734 | #endif | |
735 | ||
1da177e4 | 736 | // FIXME interpret both types of params |
083522d7 | 737 | i = ehci_readl(ehci, &ehci->caps->hcs_params); |
1da177e4 LT |
738 | temp = scnprintf (next, size, "structural params 0x%08x\n", i); |
739 | size -= temp; | |
740 | next += temp; | |
741 | ||
083522d7 | 742 | i = ehci_readl(ehci, &ehci->caps->hcc_params); |
1da177e4 LT |
743 | temp = scnprintf (next, size, "capability params 0x%08x\n", i); |
744 | size -= temp; | |
745 | next += temp; | |
746 | ||
747 | /* Operational Registers */ | |
748 | temp = dbg_status_buf (scratch, sizeof scratch, label, | |
083522d7 | 749 | ehci_readl(ehci, &ehci->regs->status)); |
1da177e4 LT |
750 | temp = scnprintf (next, size, fmt, temp, scratch); |
751 | size -= temp; | |
752 | next += temp; | |
753 | ||
754 | temp = dbg_command_buf (scratch, sizeof scratch, label, | |
083522d7 | 755 | ehci_readl(ehci, &ehci->regs->command)); |
1da177e4 LT |
756 | temp = scnprintf (next, size, fmt, temp, scratch); |
757 | size -= temp; | |
758 | next += temp; | |
759 | ||
760 | temp = dbg_intr_buf (scratch, sizeof scratch, label, | |
083522d7 | 761 | ehci_readl(ehci, &ehci->regs->intr_enable)); |
1da177e4 LT |
762 | temp = scnprintf (next, size, fmt, temp, scratch); |
763 | size -= temp; | |
764 | next += temp; | |
765 | ||
766 | temp = scnprintf (next, size, "uframe %04x\n", | |
083522d7 | 767 | ehci_readl(ehci, &ehci->regs->frame_index)); |
1da177e4 LT |
768 | size -= temp; |
769 | next += temp; | |
770 | ||
d49d4317 DB |
771 | for (i = 1; i <= HCS_N_PORTS (ehci->hcs_params); i++) { |
772 | temp = dbg_port_buf (scratch, sizeof scratch, label, i, | |
6dbd682b SR |
773 | ehci_readl(ehci, |
774 | &ehci->regs->port_status[i - 1])); | |
1da177e4 LT |
775 | temp = scnprintf (next, size, fmt, temp, scratch); |
776 | size -= temp; | |
777 | next += temp; | |
d49d4317 DB |
778 | if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) { |
779 | temp = scnprintf (next, size, | |
780 | " debug control %08x\n", | |
6dbd682b SR |
781 | ehci_readl(ehci, |
782 | &ehci->debug->control)); | |
d49d4317 DB |
783 | size -= temp; |
784 | next += temp; | |
785 | } | |
1da177e4 LT |
786 | } |
787 | ||
788 | if (ehci->reclaim) { | |
07d29b63 | 789 | temp = scnprintf(next, size, "reclaim qh %p\n", ehci->reclaim); |
1da177e4 LT |
790 | size -= temp; |
791 | next += temp; | |
792 | } | |
793 | ||
794 | #ifdef EHCI_STATS | |
795 | temp = scnprintf (next, size, | |
796 | "irq normal %ld err %ld reclaim %ld (lost %ld)\n", | |
797 | ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim, | |
798 | ehci->stats.lost_iaa); | |
799 | size -= temp; | |
800 | next += temp; | |
801 | ||
802 | temp = scnprintf (next, size, "complete %ld unlink %ld\n", | |
803 | ehci->stats.complete, ehci->stats.unlink); | |
804 | size -= temp; | |
805 | next += temp; | |
806 | #endif | |
807 | ||
808 | done: | |
809 | spin_unlock_irqrestore (&ehci->lock, flags); | |
810 | ||
811 | return PAGE_SIZE - size; | |
812 | } | |
1da177e4 | 813 | |
694cc208 TJ |
814 | static struct debug_buffer *alloc_buffer(struct usb_bus *bus, |
815 | ssize_t (*fill_func)(struct debug_buffer *)) | |
1da177e4 | 816 | { |
694cc208 TJ |
817 | struct debug_buffer *buf; |
818 | ||
819 | buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL); | |
1da177e4 | 820 | |
694cc208 TJ |
821 | if (buf) { |
822 | buf->bus = bus; | |
823 | buf->fill_func = fill_func; | |
824 | mutex_init(&buf->mutex); | |
825 | } | |
826 | ||
827 | return buf; | |
1da177e4 LT |
828 | } |
829 | ||
694cc208 | 830 | static int fill_buffer(struct debug_buffer *buf) |
1da177e4 | 831 | { |
694cc208 TJ |
832 | int ret = 0; |
833 | ||
834 | if (!buf->page) | |
835 | buf->page = (char *)get_zeroed_page(GFP_KERNEL); | |
836 | ||
837 | if (!buf->page) { | |
838 | ret = -ENOMEM; | |
839 | goto out; | |
840 | } | |
841 | ||
842 | ret = buf->fill_func(buf); | |
1da177e4 | 843 | |
694cc208 TJ |
844 | if (ret >= 0) { |
845 | buf->count = ret; | |
846 | ret = 0; | |
847 | } | |
848 | ||
849 | out: | |
850 | return ret; | |
1da177e4 LT |
851 | } |
852 | ||
694cc208 TJ |
853 | static ssize_t debug_output(struct file *file, char __user *user_buf, |
854 | size_t len, loff_t *offset) | |
855 | { | |
856 | struct debug_buffer *buf = file->private_data; | |
857 | int ret = 0; | |
858 | ||
859 | mutex_lock(&buf->mutex); | |
860 | if (buf->count == 0) { | |
861 | ret = fill_buffer(buf); | |
862 | if (ret != 0) { | |
863 | mutex_unlock(&buf->mutex); | |
864 | goto out; | |
865 | } | |
866 | } | |
867 | mutex_unlock(&buf->mutex); | |
868 | ||
869 | ret = simple_read_from_buffer(user_buf, len, offset, | |
870 | buf->page, buf->count); | |
871 | ||
872 | out: | |
873 | return ret; | |
874 | ||
875 | } | |
876 | ||
877 | static int debug_close(struct inode *inode, struct file *file) | |
878 | { | |
879 | struct debug_buffer *buf = file->private_data; | |
1da177e4 | 880 | |
694cc208 TJ |
881 | if (buf) { |
882 | if (buf->page) | |
883 | free_page((unsigned long)buf->page); | |
884 | kfree(buf); | |
885 | } | |
886 | ||
887 | return 0; | |
888 | } | |
889 | static int debug_async_open(struct inode *inode, struct file *file) | |
890 | { | |
891 | file->private_data = alloc_buffer(inode->i_private, fill_async_buffer); | |
892 | ||
893 | return file->private_data ? 0 : -ENOMEM; | |
894 | } | |
895 | ||
896 | static int debug_periodic_open(struct inode *inode, struct file *file) | |
897 | { | |
898 | file->private_data = alloc_buffer(inode->i_private, | |
899 | fill_periodic_buffer); | |
900 | ||
901 | return file->private_data ? 0 : -ENOMEM; | |
902 | } | |
903 | ||
904 | static int debug_registers_open(struct inode *inode, struct file *file) | |
905 | { | |
906 | file->private_data = alloc_buffer(inode->i_private, | |
907 | fill_registers_buffer); | |
908 | ||
909 | return file->private_data ? 0 : -ENOMEM; | |
910 | } | |
911 | ||
912 | static inline void create_debug_files (struct ehci_hcd *ehci) | |
913 | { | |
914 | struct usb_bus *bus = &ehci_to_hcd(ehci)->self; | |
915 | ||
916 | ehci->debug_dir = debugfs_create_dir(bus->bus_name, ehci_debug_root); | |
917 | if (!ehci->debug_dir) | |
918 | goto dir_error; | |
919 | ||
920 | ehci->debug_async = debugfs_create_file("async", S_IRUGO, | |
921 | ehci->debug_dir, bus, | |
922 | &debug_async_fops); | |
923 | if (!ehci->debug_async) | |
924 | goto async_error; | |
925 | ||
926 | ehci->debug_periodic = debugfs_create_file("periodic", S_IRUGO, | |
927 | ehci->debug_dir, bus, | |
928 | &debug_periodic_fops); | |
929 | if (!ehci->debug_periodic) | |
930 | goto periodic_error; | |
931 | ||
932 | ehci->debug_registers = debugfs_create_file("registers", S_IRUGO, | |
933 | ehci->debug_dir, bus, | |
934 | &debug_registers_fops); | |
935 | if (!ehci->debug_registers) | |
936 | goto registers_error; | |
937 | return; | |
938 | ||
939 | registers_error: | |
940 | debugfs_remove(ehci->debug_periodic); | |
941 | periodic_error: | |
942 | debugfs_remove(ehci->debug_async); | |
943 | async_error: | |
944 | debugfs_remove(ehci->debug_dir); | |
945 | dir_error: | |
946 | ehci->debug_periodic = NULL; | |
947 | ehci->debug_async = NULL; | |
948 | ehci->debug_dir = NULL; | |
949 | } | |
950 | ||
951 | static inline void remove_debug_files (struct ehci_hcd *ehci) | |
952 | { | |
953 | debugfs_remove(ehci->debug_registers); | |
954 | debugfs_remove(ehci->debug_periodic); | |
955 | debugfs_remove(ehci->debug_async); | |
956 | debugfs_remove(ehci->debug_dir); | |
957 | } | |
958 | ||
959 | #endif /* STUB_DEBUG_FILES */ |