Commit | Line | Data |
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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 | ||
1512c91f | 21 | #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) |
1da177e4 LT |
22 | |
23 | /* check the values in the HCSPARAMS register | |
24 | * (host controller _Structural_ parameters) | |
25 | * see EHCI spec, Table 2-4 for each value | |
26 | */ | |
27 | static void dbg_hcs_params (struct ehci_hcd *ehci, char *label) | |
28 | { | |
083522d7 | 29 | u32 params = ehci_readl(ehci, &ehci->caps->hcs_params); |
1da177e4 LT |
30 | |
31 | ehci_dbg (ehci, | |
32 | "%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n", | |
33 | label, params, | |
34 | HCS_DEBUG_PORT (params), | |
35 | HCS_INDICATOR (params) ? " ind" : "", | |
36 | HCS_N_CC (params), | |
37 | HCS_N_PCC (params), | |
6dbd682b | 38 | HCS_PORTROUTED (params) ? "" : " ordered", |
1da177e4 LT |
39 | HCS_PPC (params) ? "" : " !ppc", |
40 | HCS_N_PORTS (params) | |
41 | ); | |
42 | /* Port routing, per EHCI 0.95 Spec, Section 2.2.5 */ | |
43 | if (HCS_PORTROUTED (params)) { | |
44 | int i; | |
45 | char buf [46], tmp [7], byte; | |
46 | ||
47 | buf[0] = 0; | |
48 | for (i = 0; i < HCS_N_PORTS (params); i++) { | |
49 | // FIXME MIPS won't readb() ... | |
50 | byte = readb (&ehci->caps->portroute[(i>>1)]); | |
53bd6a60 | 51 | sprintf(tmp, "%d ", |
1da177e4 LT |
52 | ((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf))); |
53 | strcat(buf, tmp); | |
54 | } | |
55 | ehci_dbg (ehci, "%s portroute %s\n", | |
56 | label, buf); | |
57 | } | |
58 | } | |
59 | #else | |
60 | ||
61 | static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {} | |
62 | ||
63 | #endif | |
64 | ||
1512c91f | 65 | #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) |
1da177e4 LT |
66 | |
67 | /* check the values in the HCCPARAMS register | |
68 | * (host controller _Capability_ parameters) | |
69 | * see EHCI Spec, Table 2-5 for each value | |
70 | * */ | |
71 | static void dbg_hcc_params (struct ehci_hcd *ehci, char *label) | |
72 | { | |
083522d7 | 73 | u32 params = ehci_readl(ehci, &ehci->caps->hcc_params); |
1da177e4 LT |
74 | |
75 | if (HCC_ISOC_CACHE (params)) { | |
76 | ehci_dbg (ehci, | |
6dbd682b SR |
77 | "%s hcc_params %04x caching frame %s%s%s\n", |
78 | label, params, | |
79 | HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", | |
80 | HCC_CANPARK(params) ? " park" : "", | |
81 | HCC_64BIT_ADDR(params) ? " 64 bit addr" : ""); | |
1da177e4 LT |
82 | } else { |
83 | ehci_dbg (ehci, | |
aa4d8342 | 84 | "%s hcc_params %04x thresh %d uframes %s%s%s%s%s%s%s\n", |
6dbd682b SR |
85 | label, |
86 | params, | |
87 | HCC_ISOC_THRES(params), | |
88 | HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", | |
89 | HCC_CANPARK(params) ? " park" : "", | |
aa4d8342 AD |
90 | HCC_64BIT_ADDR(params) ? " 64 bit addr" : "", |
91 | HCC_LPM(params) ? " LPM" : "", | |
92 | HCC_PER_PORT_CHANGE_EVENT(params) ? " ppce" : "", | |
93 | HCC_HW_PREFETCH(params) ? " hw prefetch" : "", | |
94 | HCC_32FRAME_PERIODIC_LIST(params) ? | |
855ef452 | 95 | " 32 periodic list" : ""); |
1da177e4 LT |
96 | } |
97 | } | |
98 | #else | |
99 | ||
100 | static inline void dbg_hcc_params (struct ehci_hcd *ehci, char *label) {} | |
101 | ||
102 | #endif | |
103 | ||
1512c91f | 104 | #if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG) |
1da177e4 | 105 | |
8234509c | 106 | static void __maybe_unused |
1da177e4 LT |
107 | dbg_qtd (const char *label, struct ehci_hcd *ehci, struct ehci_qtd *qtd) |
108 | { | |
6dbd682b SR |
109 | ehci_dbg(ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd, |
110 | hc32_to_cpup(ehci, &qtd->hw_next), | |
111 | hc32_to_cpup(ehci, &qtd->hw_alt_next), | |
112 | hc32_to_cpup(ehci, &qtd->hw_token), | |
113 | hc32_to_cpup(ehci, &qtd->hw_buf [0])); | |
1da177e4 | 114 | if (qtd->hw_buf [1]) |
6dbd682b SR |
115 | ehci_dbg(ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n", |
116 | hc32_to_cpup(ehci, &qtd->hw_buf[1]), | |
117 | hc32_to_cpup(ehci, &qtd->hw_buf[2]), | |
118 | hc32_to_cpup(ehci, &qtd->hw_buf[3]), | |
119 | hc32_to_cpup(ehci, &qtd->hw_buf[4])); | |
1da177e4 LT |
120 | } |
121 | ||
8234509c | 122 | static void __maybe_unused |
1da177e4 LT |
123 | dbg_qh (const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) |
124 | { | |
3807e26d AD |
125 | struct ehci_qh_hw *hw = qh->hw; |
126 | ||
1da177e4 | 127 | ehci_dbg (ehci, "%s qh %p n%08x info %x %x qtd %x\n", label, |
3807e26d AD |
128 | qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current); |
129 | dbg_qtd("overlay", ehci, (struct ehci_qtd *) &hw->hw_qtd_next); | |
1da177e4 LT |
130 | } |
131 | ||
8234509c | 132 | static void __maybe_unused |
53bd6a60 | 133 | dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd) |
1da177e4 LT |
134 | { |
135 | ehci_dbg (ehci, "%s [%d] itd %p, next %08x, urb %p\n", | |
6dbd682b SR |
136 | label, itd->frame, itd, hc32_to_cpu(ehci, itd->hw_next), |
137 | itd->urb); | |
1da177e4 | 138 | ehci_dbg (ehci, |
53bd6a60 | 139 | " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n", |
6dbd682b SR |
140 | hc32_to_cpu(ehci, itd->hw_transaction[0]), |
141 | hc32_to_cpu(ehci, itd->hw_transaction[1]), | |
142 | hc32_to_cpu(ehci, itd->hw_transaction[2]), | |
143 | hc32_to_cpu(ehci, itd->hw_transaction[3]), | |
144 | hc32_to_cpu(ehci, itd->hw_transaction[4]), | |
145 | hc32_to_cpu(ehci, itd->hw_transaction[5]), | |
146 | hc32_to_cpu(ehci, itd->hw_transaction[6]), | |
147 | hc32_to_cpu(ehci, itd->hw_transaction[7])); | |
1da177e4 | 148 | ehci_dbg (ehci, |
53bd6a60 | 149 | " buf: %08x %08x %08x %08x %08x %08x %08x\n", |
6dbd682b SR |
150 | hc32_to_cpu(ehci, itd->hw_bufp[0]), |
151 | hc32_to_cpu(ehci, itd->hw_bufp[1]), | |
152 | hc32_to_cpu(ehci, itd->hw_bufp[2]), | |
153 | hc32_to_cpu(ehci, itd->hw_bufp[3]), | |
154 | hc32_to_cpu(ehci, itd->hw_bufp[4]), | |
155 | hc32_to_cpu(ehci, itd->hw_bufp[5]), | |
156 | hc32_to_cpu(ehci, itd->hw_bufp[6])); | |
1da177e4 LT |
157 | ehci_dbg (ehci, " index: %d %d %d %d %d %d %d %d\n", |
158 | itd->index[0], itd->index[1], itd->index[2], | |
159 | itd->index[3], itd->index[4], itd->index[5], | |
160 | itd->index[6], itd->index[7]); | |
161 | } | |
162 | ||
8234509c | 163 | static void __maybe_unused |
53bd6a60 | 164 | dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd) |
1da177e4 LT |
165 | { |
166 | ehci_dbg (ehci, "%s [%d] sitd %p, next %08x, urb %p\n", | |
6dbd682b SR |
167 | label, sitd->frame, sitd, hc32_to_cpu(ehci, sitd->hw_next), |
168 | sitd->urb); | |
1da177e4 | 169 | ehci_dbg (ehci, |
53bd6a60 | 170 | " addr %08x sched %04x result %08x buf %08x %08x\n", |
6dbd682b SR |
171 | hc32_to_cpu(ehci, sitd->hw_fullspeed_ep), |
172 | hc32_to_cpu(ehci, sitd->hw_uframe), | |
173 | hc32_to_cpu(ehci, sitd->hw_results), | |
174 | hc32_to_cpu(ehci, sitd->hw_buf[0]), | |
175 | hc32_to_cpu(ehci, sitd->hw_buf[1])); | |
1da177e4 LT |
176 | } |
177 | ||
8234509c | 178 | static int __maybe_unused |
1da177e4 LT |
179 | dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) |
180 | { | |
181 | return scnprintf (buf, len, | |
aa4d8342 | 182 | "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s%s", |
1da177e4 | 183 | label, label [0] ? " " : "", status, |
aa4d8342 | 184 | (status & STS_PPCE_MASK) ? " PPCE" : "", |
1da177e4 LT |
185 | (status & STS_ASS) ? " Async" : "", |
186 | (status & STS_PSS) ? " Periodic" : "", | |
187 | (status & STS_RECL) ? " Recl" : "", | |
188 | (status & STS_HALT) ? " Halt" : "", | |
189 | (status & STS_IAA) ? " IAA" : "", | |
190 | (status & STS_FATAL) ? " FATAL" : "", | |
191 | (status & STS_FLR) ? " FLR" : "", | |
192 | (status & STS_PCD) ? " PCD" : "", | |
193 | (status & STS_ERR) ? " ERR" : "", | |
194 | (status & STS_INT) ? " INT" : "" | |
195 | ); | |
196 | } | |
197 | ||
8234509c | 198 | static int __maybe_unused |
1da177e4 LT |
199 | dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable) |
200 | { | |
201 | return scnprintf (buf, len, | |
aa4d8342 | 202 | "%s%sintrenable %02x%s%s%s%s%s%s%s", |
1da177e4 | 203 | label, label [0] ? " " : "", enable, |
aa4d8342 | 204 | (enable & STS_PPCE_MASK) ? " PPCE" : "", |
1da177e4 LT |
205 | (enable & STS_IAA) ? " IAA" : "", |
206 | (enable & STS_FATAL) ? " FATAL" : "", | |
207 | (enable & STS_FLR) ? " FLR" : "", | |
208 | (enable & STS_PCD) ? " PCD" : "", | |
209 | (enable & STS_ERR) ? " ERR" : "", | |
210 | (enable & STS_INT) ? " INT" : "" | |
211 | ); | |
212 | } | |
213 | ||
214 | static const char *const fls_strings [] = | |
215 | { "1024", "512", "256", "??" }; | |
216 | ||
217 | static int | |
218 | dbg_command_buf (char *buf, unsigned len, const char *label, u32 command) | |
219 | { | |
220 | return scnprintf (buf, len, | |
aa4d8342 AD |
221 | "%s%scommand %07x %s%s%s%s%s%s=%d ithresh=%d%s%s%s%s " |
222 | "period=%s%s %s", | |
1da177e4 | 223 | label, label [0] ? " " : "", command, |
aa4d8342 AD |
224 | (command & CMD_HIRD) ? " HIRD" : "", |
225 | (command & CMD_PPCEE) ? " PPCEE" : "", | |
226 | (command & CMD_FSP) ? " FSP" : "", | |
227 | (command & CMD_ASPE) ? " ASPE" : "", | |
228 | (command & CMD_PSPE) ? " PSPE" : "", | |
229 | (command & CMD_PARK) ? " park" : "(park)", | |
1da177e4 LT |
230 | CMD_PARK_CNT (command), |
231 | (command >> 16) & 0x3f, | |
232 | (command & CMD_LRESET) ? " LReset" : "", | |
233 | (command & CMD_IAAD) ? " IAAD" : "", | |
234 | (command & CMD_ASE) ? " Async" : "", | |
235 | (command & CMD_PSE) ? " Periodic" : "", | |
236 | fls_strings [(command >> 2) & 0x3], | |
237 | (command & CMD_RESET) ? " Reset" : "", | |
238 | (command & CMD_RUN) ? "RUN" : "HALT" | |
239 | ); | |
240 | } | |
241 | ||
242 | static int | |
243 | dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) | |
244 | { | |
245 | char *sig; | |
246 | ||
247 | /* signaling state */ | |
248 | switch (status & (3 << 10)) { | |
249 | case 0 << 10: sig = "se0"; break; | |
250 | case 1 << 10: sig = "k"; break; /* low speed */ | |
251 | case 2 << 10: sig = "j"; break; | |
252 | default: sig = "?"; break; | |
253 | } | |
254 | ||
255 | return scnprintf (buf, len, | |
aa4d8342 AD |
256 | "%s%sport:%d status %06x %d %s%s%s%s%s%s " |
257 | "sig=%s%s%s%s%s%s%s%s%s%s%s", | |
1da177e4 | 258 | label, label [0] ? " " : "", port, status, |
aa4d8342 AD |
259 | status>>25,/*device address */ |
260 | (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_ACK ? | |
261 | " ACK" : "", | |
262 | (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_NYET ? | |
263 | " NYET" : "", | |
264 | (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_STALL ? | |
265 | " STALL" : "", | |
266 | (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_ERR ? | |
267 | " ERR" : "", | |
1da177e4 LT |
268 | (status & PORT_POWER) ? " POWER" : "", |
269 | (status & PORT_OWNER) ? " OWNER" : "", | |
270 | sig, | |
aa4d8342 | 271 | (status & PORT_LPM) ? " LPM" : "", |
1da177e4 LT |
272 | (status & PORT_RESET) ? " RESET" : "", |
273 | (status & PORT_SUSPEND) ? " SUSPEND" : "", | |
274 | (status & PORT_RESUME) ? " RESUME" : "", | |
275 | (status & PORT_OCC) ? " OCC" : "", | |
276 | (status & PORT_OC) ? " OC" : "", | |
277 | (status & PORT_PEC) ? " PEC" : "", | |
278 | (status & PORT_PE) ? " PE" : "", | |
279 | (status & PORT_CSC) ? " CSC" : "", | |
6dbd682b | 280 | (status & PORT_CONNECT) ? " CONNECT" : ""); |
1da177e4 LT |
281 | } |
282 | ||
283 | #else | |
8234509c | 284 | static inline void __maybe_unused |
1da177e4 LT |
285 | dbg_qh (char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) |
286 | {} | |
287 | ||
8234509c | 288 | static inline int __maybe_unused |
1da177e4 LT |
289 | dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) |
290 | { return 0; } | |
291 | ||
8234509c | 292 | static inline int __maybe_unused |
1da177e4 LT |
293 | dbg_command_buf (char *buf, unsigned len, const char *label, u32 command) |
294 | { return 0; } | |
295 | ||
8234509c | 296 | static inline int __maybe_unused |
1da177e4 LT |
297 | dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable) |
298 | { return 0; } | |
299 | ||
8234509c | 300 | static inline int __maybe_unused |
1da177e4 LT |
301 | dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) |
302 | { return 0; } | |
303 | ||
1512c91f | 304 | #endif /* DEBUG || CONFIG_DYNAMIC_DEBUG */ |
1da177e4 LT |
305 | |
306 | /* functions have the "wrong" filename when they're output... */ | |
307 | #define dbg_status(ehci, label, status) { \ | |
308 | char _buf [80]; \ | |
309 | dbg_status_buf (_buf, sizeof _buf, label, status); \ | |
310 | ehci_dbg (ehci, "%s\n", _buf); \ | |
311 | } | |
312 | ||
313 | #define dbg_cmd(ehci, label, command) { \ | |
314 | char _buf [80]; \ | |
315 | dbg_command_buf (_buf, sizeof _buf, label, command); \ | |
316 | ehci_dbg (ehci, "%s\n", _buf); \ | |
317 | } | |
318 | ||
319 | #define dbg_port(ehci, label, port, status) { \ | |
320 | char _buf [80]; \ | |
321 | dbg_port_buf (_buf, sizeof _buf, label, port, status); \ | |
322 | ehci_dbg (ehci, "%s\n", _buf); \ | |
323 | } | |
324 | ||
325 | /*-------------------------------------------------------------------------*/ | |
326 | ||
327 | #ifdef STUB_DEBUG_FILES | |
328 | ||
329 | static inline void create_debug_files (struct ehci_hcd *bus) { } | |
330 | static inline void remove_debug_files (struct ehci_hcd *bus) { } | |
331 | ||
332 | #else | |
333 | ||
694cc208 TJ |
334 | /* troubleshooting help: expose state in debugfs */ |
335 | ||
336 | static int debug_async_open(struct inode *, struct file *); | |
337 | static int debug_periodic_open(struct inode *, struct file *); | |
338 | static int debug_registers_open(struct inode *, struct file *); | |
aa4d8342 | 339 | |
694cc208 TJ |
340 | static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); |
341 | static int debug_close(struct inode *, struct file *); | |
342 | ||
343 | static const struct file_operations debug_async_fops = { | |
344 | .owner = THIS_MODULE, | |
345 | .open = debug_async_open, | |
346 | .read = debug_output, | |
347 | .release = debug_close, | |
6038f373 | 348 | .llseek = default_llseek, |
694cc208 TJ |
349 | }; |
350 | static const struct file_operations debug_periodic_fops = { | |
351 | .owner = THIS_MODULE, | |
352 | .open = debug_periodic_open, | |
353 | .read = debug_output, | |
354 | .release = debug_close, | |
6038f373 | 355 | .llseek = default_llseek, |
694cc208 TJ |
356 | }; |
357 | static const struct file_operations debug_registers_fops = { | |
358 | .owner = THIS_MODULE, | |
359 | .open = debug_registers_open, | |
360 | .read = debug_output, | |
361 | .release = debug_close, | |
6038f373 | 362 | .llseek = default_llseek, |
694cc208 TJ |
363 | }; |
364 | ||
365 | static struct dentry *ehci_debug_root; | |
366 | ||
367 | struct debug_buffer { | |
368 | ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ | |
369 | struct usb_bus *bus; | |
370 | struct mutex mutex; /* protect filling of buffer */ | |
371 | size_t count; /* number of characters filled into buffer */ | |
3c04e20e ML |
372 | char *output_buf; |
373 | size_t alloc_size; | |
694cc208 | 374 | }; |
1da177e4 LT |
375 | |
376 | #define speed_char(info1) ({ char tmp; \ | |
377 | switch (info1 & (3 << 12)) { \ | |
4c53de72 AS |
378 | case QH_FULL_SPEED: tmp = 'f'; break; \ |
379 | case QH_LOW_SPEED: tmp = 'l'; break; \ | |
380 | case QH_HIGH_SPEED: tmp = 'h'; break; \ | |
1da177e4 | 381 | default: tmp = '?'; break; \ |
2b84f92b | 382 | } tmp; }) |
1da177e4 | 383 | |
6dbd682b | 384 | static inline char token_mark(struct ehci_hcd *ehci, __hc32 token) |
1da177e4 | 385 | { |
6dbd682b SR |
386 | __u32 v = hc32_to_cpu(ehci, token); |
387 | ||
1da177e4 LT |
388 | if (v & QTD_STS_ACTIVE) |
389 | return '*'; | |
390 | if (v & QTD_STS_HALT) | |
391 | return '-'; | |
392 | if (!IS_SHORT_READ (v)) | |
393 | return ' '; | |
394 | /* tries to advance through hw_alt_next */ | |
395 | return '/'; | |
396 | } | |
397 | ||
398 | static void qh_lines ( | |
399 | struct ehci_hcd *ehci, | |
400 | struct ehci_qh *qh, | |
401 | char **nextp, | |
402 | unsigned *sizep | |
403 | ) | |
404 | { | |
405 | u32 scratch; | |
406 | u32 hw_curr; | |
407 | struct list_head *entry; | |
408 | struct ehci_qtd *td; | |
409 | unsigned temp; | |
410 | unsigned size = *sizep; | |
411 | char *next = *nextp; | |
412 | char mark; | |
fd05e720 | 413 | __le32 list_end = EHCI_LIST_END(ehci); |
3807e26d | 414 | struct ehci_qh_hw *hw = qh->hw; |
1da177e4 | 415 | |
3807e26d | 416 | if (hw->hw_qtd_next == list_end) /* NEC does this */ |
1da177e4 LT |
417 | mark = '@'; |
418 | else | |
3807e26d | 419 | mark = token_mark(ehci, hw->hw_token); |
1da177e4 | 420 | if (mark == '/') { /* qh_alt_next controls qh advance? */ |
3807e26d AD |
421 | if ((hw->hw_alt_next & QTD_MASK(ehci)) |
422 | == ehci->async->hw->hw_alt_next) | |
1da177e4 | 423 | mark = '#'; /* blocked */ |
3807e26d | 424 | else if (hw->hw_alt_next == list_end) |
1da177e4 LT |
425 | mark = '.'; /* use hw_qtd_next */ |
426 | /* else alt_next points to some other qtd */ | |
427 | } | |
3807e26d AD |
428 | scratch = hc32_to_cpup(ehci, &hw->hw_info1); |
429 | hw_curr = (mark == '*') ? hc32_to_cpup(ehci, &hw->hw_current) : 0; | |
1da177e4 LT |
430 | temp = scnprintf (next, size, |
431 | "qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)", | |
432 | qh, scratch & 0x007f, | |
433 | speed_char (scratch), | |
434 | (scratch >> 8) & 0x000f, | |
3807e26d AD |
435 | scratch, hc32_to_cpup(ehci, &hw->hw_info2), |
436 | hc32_to_cpup(ehci, &hw->hw_token), mark, | |
437 | (cpu_to_hc32(ehci, QTD_TOGGLE) & hw->hw_token) | |
1da177e4 | 438 | ? "data1" : "data0", |
3807e26d | 439 | (hc32_to_cpup(ehci, &hw->hw_alt_next) >> 1) & 0x0f); |
1da177e4 LT |
440 | size -= temp; |
441 | next += temp; | |
442 | ||
443 | /* hc may be modifying the list as we read it ... */ | |
444 | list_for_each (entry, &qh->qtd_list) { | |
445 | td = list_entry (entry, struct ehci_qtd, qtd_list); | |
6dbd682b | 446 | scratch = hc32_to_cpup(ehci, &td->hw_token); |
1da177e4 LT |
447 | mark = ' '; |
448 | if (hw_curr == td->qtd_dma) | |
449 | mark = '*'; | |
3807e26d | 450 | else if (hw->hw_qtd_next == cpu_to_hc32(ehci, td->qtd_dma)) |
1da177e4 LT |
451 | mark = '+'; |
452 | else if (QTD_LENGTH (scratch)) { | |
3807e26d | 453 | if (td->hw_alt_next == ehci->async->hw->hw_alt_next) |
1da177e4 | 454 | mark = '#'; |
6dbd682b | 455 | else if (td->hw_alt_next != list_end) |
1da177e4 LT |
456 | mark = '/'; |
457 | } | |
458 | temp = snprintf (next, size, | |
459 | "\n\t%p%c%s len=%d %08x urb %p", | |
460 | td, mark, ({ char *tmp; | |
461 | switch ((scratch>>8)&0x03) { | |
462 | case 0: tmp = "out"; break; | |
463 | case 1: tmp = "in"; break; | |
464 | case 2: tmp = "setup"; break; | |
465 | default: tmp = "?"; break; | |
466 | } tmp;}), | |
467 | (scratch >> 16) & 0x7fff, | |
468 | scratch, | |
469 | td->urb); | |
e64a5219 | 470 | if (size < temp) |
1da177e4 LT |
471 | temp = size; |
472 | size -= temp; | |
473 | next += temp; | |
474 | if (temp == size) | |
475 | goto done; | |
476 | } | |
477 | ||
478 | temp = snprintf (next, size, "\n"); | |
e64a5219 | 479 | if (size < temp) |
1da177e4 LT |
480 | temp = size; |
481 | size -= temp; | |
482 | next += temp; | |
483 | ||
484 | done: | |
485 | *sizep = size; | |
486 | *nextp = next; | |
487 | } | |
488 | ||
694cc208 | 489 | static ssize_t fill_async_buffer(struct debug_buffer *buf) |
1da177e4 | 490 | { |
1da177e4 LT |
491 | struct usb_hcd *hcd; |
492 | struct ehci_hcd *ehci; | |
493 | unsigned long flags; | |
494 | unsigned temp, size; | |
495 | char *next; | |
496 | struct ehci_qh *qh; | |
497 | ||
694cc208 | 498 | hcd = bus_to_hcd(buf->bus); |
1da177e4 | 499 | ehci = hcd_to_ehci (hcd); |
3c04e20e ML |
500 | next = buf->output_buf; |
501 | size = buf->alloc_size; | |
1da177e4 | 502 | |
694cc208 TJ |
503 | *next = 0; |
504 | ||
1da177e4 LT |
505 | /* dumps a snapshot of the async schedule. |
506 | * usually empty except for long-term bulk reads, or head. | |
507 | * one QH per line, and TDs we know about | |
508 | */ | |
509 | spin_lock_irqsave (&ehci->lock, flags); | |
510 | for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh) | |
511 | qh_lines (ehci, qh, &next, &size); | |
6e018751 | 512 | if (!list_empty(&ehci->async_unlink) && size > 0) { |
99ac5b1e | 513 | temp = scnprintf(next, size, "\nunlink =\n"); |
1da177e4 LT |
514 | size -= temp; |
515 | next += temp; | |
516 | ||
6e018751 AS |
517 | list_for_each_entry(qh, &ehci->async_unlink, unlink_node) { |
518 | if (size <= 0) | |
519 | break; | |
520 | qh_lines(ehci, qh, &next, &size); | |
521 | } | |
1da177e4 LT |
522 | } |
523 | spin_unlock_irqrestore (&ehci->lock, flags); | |
524 | ||
3c04e20e | 525 | return strlen(buf->output_buf); |
1da177e4 | 526 | } |
1da177e4 LT |
527 | |
528 | #define DBG_SCHED_LIMIT 64 | |
694cc208 | 529 | static ssize_t fill_periodic_buffer(struct debug_buffer *buf) |
1da177e4 | 530 | { |
1da177e4 LT |
531 | struct usb_hcd *hcd; |
532 | struct ehci_hcd *ehci; | |
533 | unsigned long flags; | |
534 | union ehci_shadow p, *seen; | |
535 | unsigned temp, size, seen_count; | |
536 | char *next; | |
537 | unsigned i; | |
6dbd682b | 538 | __hc32 tag; |
1da177e4 | 539 | |
54e6ecb2 | 540 | if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC))) |
1da177e4 LT |
541 | return 0; |
542 | seen_count = 0; | |
543 | ||
694cc208 | 544 | hcd = bus_to_hcd(buf->bus); |
1da177e4 | 545 | ehci = hcd_to_ehci (hcd); |
3c04e20e ML |
546 | next = buf->output_buf; |
547 | size = buf->alloc_size; | |
1da177e4 LT |
548 | |
549 | temp = scnprintf (next, size, "size = %d\n", ehci->periodic_size); | |
550 | size -= temp; | |
551 | next += temp; | |
552 | ||
553 | /* dump a snapshot of the periodic schedule. | |
554 | * iso changes, interrupt usually doesn't. | |
555 | */ | |
556 | spin_lock_irqsave (&ehci->lock, flags); | |
557 | for (i = 0; i < ehci->periodic_size; i++) { | |
558 | p = ehci->pshadow [i]; | |
559 | if (likely (!p.ptr)) | |
560 | continue; | |
6dbd682b | 561 | tag = Q_NEXT_TYPE(ehci, ehci->periodic [i]); |
1da177e4 LT |
562 | |
563 | temp = scnprintf (next, size, "%4d: ", i); | |
564 | size -= temp; | |
565 | next += temp; | |
566 | ||
567 | do { | |
3807e26d AD |
568 | struct ehci_qh_hw *hw; |
569 | ||
6dbd682b | 570 | switch (hc32_to_cpu(ehci, tag)) { |
1da177e4 | 571 | case Q_TYPE_QH: |
3807e26d | 572 | hw = p.qh->hw; |
1da177e4 LT |
573 | temp = scnprintf (next, size, " qh%d-%04x/%p", |
574 | p.qh->period, | |
6dbd682b | 575 | hc32_to_cpup(ehci, |
3807e26d | 576 | &hw->hw_info2) |
1da177e4 | 577 | /* uframe masks */ |
7dedacf4 | 578 | & (QH_CMASK | QH_SMASK), |
1da177e4 LT |
579 | p.qh); |
580 | size -= temp; | |
581 | next += temp; | |
582 | /* don't repeat what follows this qh */ | |
583 | for (temp = 0; temp < seen_count; temp++) { | |
584 | if (seen [temp].ptr != p.ptr) | |
585 | continue; | |
3c4bb71f | 586 | if (p.qh->qh_next.ptr) { |
1da177e4 LT |
587 | temp = scnprintf (next, size, |
588 | " ..."); | |
3c4bb71f ML |
589 | size -= temp; |
590 | next += temp; | |
591 | } | |
1da177e4 LT |
592 | break; |
593 | } | |
594 | /* show more info the first time around */ | |
3c4bb71f | 595 | if (temp == seen_count) { |
6dbd682b | 596 | u32 scratch = hc32_to_cpup(ehci, |
3807e26d | 597 | &hw->hw_info1); |
1da177e4 LT |
598 | struct ehci_qtd *qtd; |
599 | char *type = ""; | |
600 | ||
601 | /* count tds, get ep direction */ | |
602 | temp = 0; | |
603 | list_for_each_entry (qtd, | |
604 | &p.qh->qtd_list, | |
605 | qtd_list) { | |
606 | temp++; | |
6dbd682b SR |
607 | switch (0x03 & (hc32_to_cpu( |
608 | ehci, | |
1da177e4 LT |
609 | qtd->hw_token) >> 8)) { |
610 | case 0: type = "out"; continue; | |
611 | case 1: type = "in"; continue; | |
612 | } | |
613 | } | |
614 | ||
615 | temp = scnprintf (next, size, | |
616 | " (%c%d ep%d%s " | |
617 | "[%d/%d] q%d p%d)", | |
618 | speed_char (scratch), | |
619 | scratch & 0x007f, | |
620 | (scratch >> 8) & 0x000f, type, | |
621 | p.qh->usecs, p.qh->c_usecs, | |
622 | temp, | |
623 | 0x7ff & (scratch >> 16)); | |
624 | ||
625 | if (seen_count < DBG_SCHED_LIMIT) | |
626 | seen [seen_count++].qh = p.qh; | |
627 | } else | |
628 | temp = 0; | |
17dcfc9b AS |
629 | tag = Q_NEXT_TYPE(ehci, hw->hw_next); |
630 | p = p.qh->qh_next; | |
1da177e4 LT |
631 | break; |
632 | case Q_TYPE_FSTN: | |
633 | temp = scnprintf (next, size, | |
634 | " fstn-%8x/%p", p.fstn->hw_prev, | |
635 | p.fstn); | |
6dbd682b | 636 | tag = Q_NEXT_TYPE(ehci, p.fstn->hw_next); |
1da177e4 LT |
637 | p = p.fstn->fstn_next; |
638 | break; | |
639 | case Q_TYPE_ITD: | |
640 | temp = scnprintf (next, size, | |
641 | " itd/%p", p.itd); | |
6dbd682b | 642 | tag = Q_NEXT_TYPE(ehci, p.itd->hw_next); |
1da177e4 LT |
643 | p = p.itd->itd_next; |
644 | break; | |
645 | case Q_TYPE_SITD: | |
646 | temp = scnprintf (next, size, | |
647 | " sitd%d-%04x/%p", | |
648 | p.sitd->stream->interval, | |
6dbd682b | 649 | hc32_to_cpup(ehci, &p.sitd->hw_uframe) |
1da177e4 LT |
650 | & 0x0000ffff, |
651 | p.sitd); | |
6dbd682b | 652 | tag = Q_NEXT_TYPE(ehci, p.sitd->hw_next); |
1da177e4 LT |
653 | p = p.sitd->sitd_next; |
654 | break; | |
655 | } | |
656 | size -= temp; | |
657 | next += temp; | |
658 | } while (p.ptr); | |
659 | ||
660 | temp = scnprintf (next, size, "\n"); | |
661 | size -= temp; | |
662 | next += temp; | |
663 | } | |
664 | spin_unlock_irqrestore (&ehci->lock, flags); | |
665 | kfree (seen); | |
666 | ||
3c04e20e | 667 | return buf->alloc_size - size; |
1da177e4 | 668 | } |
1da177e4 LT |
669 | #undef DBG_SCHED_LIMIT |
670 | ||
e8799906 AS |
671 | static const char *rh_state_string(struct ehci_hcd *ehci) |
672 | { | |
673 | switch (ehci->rh_state) { | |
674 | case EHCI_RH_HALTED: | |
675 | return "halted"; | |
676 | case EHCI_RH_SUSPENDED: | |
677 | return "suspended"; | |
678 | case EHCI_RH_RUNNING: | |
679 | return "running"; | |
c0c53dbc AS |
680 | case EHCI_RH_STOPPING: |
681 | return "stopping"; | |
e8799906 AS |
682 | } |
683 | return "?"; | |
684 | } | |
685 | ||
694cc208 | 686 | static ssize_t fill_registers_buffer(struct debug_buffer *buf) |
1da177e4 | 687 | { |
1da177e4 LT |
688 | struct usb_hcd *hcd; |
689 | struct ehci_hcd *ehci; | |
690 | unsigned long flags; | |
691 | unsigned temp, size, i; | |
692 | char *next, scratch [80]; | |
693 | static char fmt [] = "%*s\n"; | |
694 | static char label [] = ""; | |
695 | ||
694cc208 | 696 | hcd = bus_to_hcd(buf->bus); |
1da177e4 | 697 | ehci = hcd_to_ehci (hcd); |
3c04e20e ML |
698 | next = buf->output_buf; |
699 | size = buf->alloc_size; | |
1da177e4 LT |
700 | |
701 | spin_lock_irqsave (&ehci->lock, flags); | |
702 | ||
541c7d43 | 703 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
1da177e4 | 704 | size = scnprintf (next, size, |
2b70f073 | 705 | "bus %s, device %s\n" |
d49d4317 | 706 | "%s\n" |
1da177e4 LT |
707 | "SUSPENDED (no register access)\n", |
708 | hcd->self.controller->bus->name, | |
7071a3ce | 709 | dev_name(hcd->self.controller), |
d49d4317 | 710 | hcd->product_desc); |
1da177e4 LT |
711 | goto done; |
712 | } | |
713 | ||
714 | /* Capability Registers */ | |
c430131a | 715 | i = HC_VERSION(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); |
1da177e4 | 716 | temp = scnprintf (next, size, |
2b70f073 | 717 | "bus %s, device %s\n" |
d49d4317 | 718 | "%s\n" |
e8799906 | 719 | "EHCI %x.%02x, rh state %s\n", |
1da177e4 | 720 | hcd->self.controller->bus->name, |
7071a3ce | 721 | dev_name(hcd->self.controller), |
d49d4317 | 722 | hcd->product_desc, |
e8799906 | 723 | i >> 8, i & 0x0ff, rh_state_string(ehci)); |
1da177e4 LT |
724 | size -= temp; |
725 | next += temp; | |
726 | ||
d49d4317 DB |
727 | #ifdef CONFIG_PCI |
728 | /* EHCI 0.96 and later may have "extended capabilities" */ | |
729 | if (hcd->self.controller->bus == &pci_bus_type) { | |
730 | struct pci_dev *pdev; | |
731 | u32 offset, cap, cap2; | |
732 | unsigned count = 256/4; | |
733 | ||
734 | pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); | |
6dbd682b SR |
735 | offset = HCC_EXT_CAPS(ehci_readl(ehci, |
736 | &ehci->caps->hcc_params)); | |
d49d4317 DB |
737 | while (offset && count--) { |
738 | pci_read_config_dword (pdev, offset, &cap); | |
739 | switch (cap & 0xff) { | |
740 | case 1: | |
741 | temp = scnprintf (next, size, | |
742 | "ownership %08x%s%s\n", cap, | |
743 | (cap & (1 << 24)) ? " linux" : "", | |
744 | (cap & (1 << 16)) ? " firmware" : ""); | |
745 | size -= temp; | |
746 | next += temp; | |
747 | ||
748 | offset += 4; | |
749 | pci_read_config_dword (pdev, offset, &cap2); | |
750 | temp = scnprintf (next, size, | |
751 | "SMI sts/enable 0x%08x\n", cap2); | |
752 | size -= temp; | |
753 | next += temp; | |
754 | break; | |
755 | case 0: /* illegal reserved capability */ | |
756 | cap = 0; | |
757 | /* FALLTHROUGH */ | |
758 | default: /* unknown */ | |
759 | break; | |
760 | } | |
761 | temp = (cap >> 8) & 0xff; | |
762 | } | |
763 | } | |
764 | #endif | |
765 | ||
1da177e4 | 766 | // FIXME interpret both types of params |
083522d7 | 767 | i = ehci_readl(ehci, &ehci->caps->hcs_params); |
1da177e4 LT |
768 | temp = scnprintf (next, size, "structural params 0x%08x\n", i); |
769 | size -= temp; | |
770 | next += temp; | |
771 | ||
083522d7 | 772 | i = ehci_readl(ehci, &ehci->caps->hcc_params); |
1da177e4 LT |
773 | temp = scnprintf (next, size, "capability params 0x%08x\n", i); |
774 | size -= temp; | |
775 | next += temp; | |
776 | ||
777 | /* Operational Registers */ | |
778 | temp = dbg_status_buf (scratch, sizeof scratch, label, | |
083522d7 | 779 | ehci_readl(ehci, &ehci->regs->status)); |
1da177e4 LT |
780 | temp = scnprintf (next, size, fmt, temp, scratch); |
781 | size -= temp; | |
782 | next += temp; | |
783 | ||
784 | temp = dbg_command_buf (scratch, sizeof scratch, label, | |
083522d7 | 785 | ehci_readl(ehci, &ehci->regs->command)); |
1da177e4 LT |
786 | temp = scnprintf (next, size, fmt, temp, scratch); |
787 | size -= temp; | |
788 | next += temp; | |
789 | ||
790 | temp = dbg_intr_buf (scratch, sizeof scratch, label, | |
083522d7 | 791 | ehci_readl(ehci, &ehci->regs->intr_enable)); |
1da177e4 LT |
792 | temp = scnprintf (next, size, fmt, temp, scratch); |
793 | size -= temp; | |
794 | next += temp; | |
795 | ||
796 | temp = scnprintf (next, size, "uframe %04x\n", | |
68aa95d5 | 797 | ehci_read_frame_index(ehci)); |
1da177e4 LT |
798 | size -= temp; |
799 | next += temp; | |
800 | ||
d49d4317 DB |
801 | for (i = 1; i <= HCS_N_PORTS (ehci->hcs_params); i++) { |
802 | temp = dbg_port_buf (scratch, sizeof scratch, label, i, | |
6dbd682b SR |
803 | ehci_readl(ehci, |
804 | &ehci->regs->port_status[i - 1])); | |
1da177e4 LT |
805 | temp = scnprintf (next, size, fmt, temp, scratch); |
806 | size -= temp; | |
807 | next += temp; | |
d49d4317 DB |
808 | if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) { |
809 | temp = scnprintf (next, size, | |
810 | " debug control %08x\n", | |
6dbd682b SR |
811 | ehci_readl(ehci, |
812 | &ehci->debug->control)); | |
d49d4317 DB |
813 | size -= temp; |
814 | next += temp; | |
815 | } | |
1da177e4 LT |
816 | } |
817 | ||
6e018751 | 818 | if (!list_empty(&ehci->async_unlink)) { |
99ac5b1e | 819 | temp = scnprintf(next, size, "async unlink qh %p\n", |
6e018751 AS |
820 | list_first_entry(&ehci->async_unlink, |
821 | struct ehci_qh, unlink_node)); | |
1da177e4 LT |
822 | size -= temp; |
823 | next += temp; | |
824 | } | |
825 | ||
826 | #ifdef EHCI_STATS | |
827 | temp = scnprintf (next, size, | |
99ac5b1e AS |
828 | "irq normal %ld err %ld iaa %ld (lost %ld)\n", |
829 | ehci->stats.normal, ehci->stats.error, ehci->stats.iaa, | |
1da177e4 LT |
830 | ehci->stats.lost_iaa); |
831 | size -= temp; | |
832 | next += temp; | |
833 | ||
834 | temp = scnprintf (next, size, "complete %ld unlink %ld\n", | |
835 | ehci->stats.complete, ehci->stats.unlink); | |
836 | size -= temp; | |
837 | next += temp; | |
838 | #endif | |
839 | ||
840 | done: | |
841 | spin_unlock_irqrestore (&ehci->lock, flags); | |
842 | ||
3c04e20e | 843 | return buf->alloc_size - size; |
1da177e4 | 844 | } |
1da177e4 | 845 | |
694cc208 TJ |
846 | static struct debug_buffer *alloc_buffer(struct usb_bus *bus, |
847 | ssize_t (*fill_func)(struct debug_buffer *)) | |
1da177e4 | 848 | { |
694cc208 TJ |
849 | struct debug_buffer *buf; |
850 | ||
851 | buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL); | |
1da177e4 | 852 | |
694cc208 TJ |
853 | if (buf) { |
854 | buf->bus = bus; | |
855 | buf->fill_func = fill_func; | |
856 | mutex_init(&buf->mutex); | |
3c04e20e | 857 | buf->alloc_size = PAGE_SIZE; |
694cc208 TJ |
858 | } |
859 | ||
860 | return buf; | |
1da177e4 LT |
861 | } |
862 | ||
694cc208 | 863 | static int fill_buffer(struct debug_buffer *buf) |
1da177e4 | 864 | { |
694cc208 TJ |
865 | int ret = 0; |
866 | ||
3c04e20e | 867 | if (!buf->output_buf) |
73f35c60 | 868 | buf->output_buf = vmalloc(buf->alloc_size); |
694cc208 | 869 | |
3c04e20e | 870 | if (!buf->output_buf) { |
694cc208 TJ |
871 | ret = -ENOMEM; |
872 | goto out; | |
873 | } | |
874 | ||
875 | ret = buf->fill_func(buf); | |
1da177e4 | 876 | |
694cc208 TJ |
877 | if (ret >= 0) { |
878 | buf->count = ret; | |
879 | ret = 0; | |
880 | } | |
881 | ||
882 | out: | |
883 | return ret; | |
1da177e4 LT |
884 | } |
885 | ||
694cc208 TJ |
886 | static ssize_t debug_output(struct file *file, char __user *user_buf, |
887 | size_t len, loff_t *offset) | |
888 | { | |
889 | struct debug_buffer *buf = file->private_data; | |
890 | int ret = 0; | |
891 | ||
892 | mutex_lock(&buf->mutex); | |
893 | if (buf->count == 0) { | |
894 | ret = fill_buffer(buf); | |
895 | if (ret != 0) { | |
896 | mutex_unlock(&buf->mutex); | |
897 | goto out; | |
898 | } | |
899 | } | |
900 | mutex_unlock(&buf->mutex); | |
901 | ||
902 | ret = simple_read_from_buffer(user_buf, len, offset, | |
3c04e20e | 903 | buf->output_buf, buf->count); |
694cc208 TJ |
904 | |
905 | out: | |
906 | return ret; | |
907 | ||
908 | } | |
909 | ||
910 | static int debug_close(struct inode *inode, struct file *file) | |
911 | { | |
912 | struct debug_buffer *buf = file->private_data; | |
1da177e4 | 913 | |
694cc208 | 914 | if (buf) { |
f8086a07 | 915 | vfree(buf->output_buf); |
694cc208 TJ |
916 | kfree(buf); |
917 | } | |
918 | ||
919 | return 0; | |
920 | } | |
921 | static int debug_async_open(struct inode *inode, struct file *file) | |
922 | { | |
923 | file->private_data = alloc_buffer(inode->i_private, fill_async_buffer); | |
924 | ||
925 | return file->private_data ? 0 : -ENOMEM; | |
926 | } | |
927 | ||
928 | static int debug_periodic_open(struct inode *inode, struct file *file) | |
929 | { | |
3c04e20e ML |
930 | struct debug_buffer *buf; |
931 | buf = alloc_buffer(inode->i_private, fill_periodic_buffer); | |
932 | if (!buf) | |
933 | return -ENOMEM; | |
694cc208 | 934 | |
3c04e20e ML |
935 | buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8)*PAGE_SIZE; |
936 | file->private_data = buf; | |
937 | return 0; | |
694cc208 TJ |
938 | } |
939 | ||
940 | static int debug_registers_open(struct inode *inode, struct file *file) | |
941 | { | |
942 | file->private_data = alloc_buffer(inode->i_private, | |
943 | fill_registers_buffer); | |
944 | ||
945 | return file->private_data ? 0 : -ENOMEM; | |
946 | } | |
947 | ||
948 | static inline void create_debug_files (struct ehci_hcd *ehci) | |
949 | { | |
950 | struct usb_bus *bus = &ehci_to_hcd(ehci)->self; | |
951 | ||
952 | ehci->debug_dir = debugfs_create_dir(bus->bus_name, ehci_debug_root); | |
953 | if (!ehci->debug_dir) | |
185c9bcf ML |
954 | return; |
955 | ||
956 | if (!debugfs_create_file("async", S_IRUGO, ehci->debug_dir, bus, | |
957 | &debug_async_fops)) | |
958 | goto file_error; | |
959 | ||
960 | if (!debugfs_create_file("periodic", S_IRUGO, ehci->debug_dir, bus, | |
961 | &debug_periodic_fops)) | |
962 | goto file_error; | |
963 | ||
964 | if (!debugfs_create_file("registers", S_IRUGO, ehci->debug_dir, bus, | |
965 | &debug_registers_fops)) | |
966 | goto file_error; | |
967 | ||
694cc208 TJ |
968 | return; |
969 | ||
185c9bcf ML |
970 | file_error: |
971 | debugfs_remove_recursive(ehci->debug_dir); | |
694cc208 TJ |
972 | } |
973 | ||
974 | static inline void remove_debug_files (struct ehci_hcd *ehci) | |
975 | { | |
185c9bcf | 976 | debugfs_remove_recursive(ehci->debug_dir); |
694cc208 TJ |
977 | } |
978 | ||
979 | #endif /* STUB_DEBUG_FILES */ |