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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 | * | |
1da177e4 LT |
14 | */ |
15 | ||
16 | /* this file is part of ehci-hcd.c */ | |
17 | ||
1c20163d | 18 | #ifdef CONFIG_DYNAMIC_DEBUG |
1da177e4 | 19 | |
0784b4d5 GB |
20 | /* |
21 | * check the values in the HCSPARAMS register | |
1da177e4 LT |
22 | * (host controller _Structural_ parameters) |
23 | * see EHCI spec, Table 2-4 for each value | |
24 | */ | |
668ab0db | 25 | static void dbg_hcs_params(struct ehci_hcd *ehci, char *label) |
1da177e4 | 26 | { |
083522d7 | 27 | u32 params = ehci_readl(ehci, &ehci->caps->hcs_params); |
1da177e4 | 28 | |
668ab0db | 29 | ehci_dbg(ehci, |
1da177e4 LT |
30 | "%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n", |
31 | label, params, | |
668ab0db GB |
32 | HCS_DEBUG_PORT(params), |
33 | HCS_INDICATOR(params) ? " ind" : "", | |
34 | HCS_N_CC(params), | |
35 | HCS_N_PCC(params), | |
36 | HCS_PORTROUTED(params) ? "" : " ordered", | |
37 | HCS_PPC(params) ? "" : " !ppc", | |
78698d66 | 38 | HCS_N_PORTS(params)); |
1da177e4 | 39 | /* Port routing, per EHCI 0.95 Spec, Section 2.2.5 */ |
668ab0db | 40 | if (HCS_PORTROUTED(params)) { |
1da177e4 | 41 | int i; |
1cb1d1c0 | 42 | char buf[46], tmp[7], byte; |
1da177e4 LT |
43 | |
44 | buf[0] = 0; | |
668ab0db | 45 | for (i = 0; i < HCS_N_PORTS(params); i++) { |
0784b4d5 | 46 | /* FIXME MIPS won't readb() ... */ |
668ab0db | 47 | byte = readb(&ehci->caps->portroute[(i >> 1)]); |
53bd6a60 | 48 | sprintf(tmp, "%d ", |
c2fb0171 | 49 | (i & 0x1) ? byte & 0xf : (byte >> 4) & 0xf); |
1da177e4 LT |
50 | strcat(buf, tmp); |
51 | } | |
668ab0db | 52 | ehci_dbg(ehci, "%s portroute %s\n", label, buf); |
1da177e4 LT |
53 | } |
54 | } | |
1da177e4 | 55 | |
0784b4d5 GB |
56 | /* |
57 | * check the values in the HCCPARAMS register | |
1da177e4 LT |
58 | * (host controller _Capability_ parameters) |
59 | * see EHCI Spec, Table 2-5 for each value | |
0784b4d5 | 60 | */ |
668ab0db | 61 | static void dbg_hcc_params(struct ehci_hcd *ehci, char *label) |
1da177e4 | 62 | { |
083522d7 | 63 | u32 params = ehci_readl(ehci, &ehci->caps->hcc_params); |
1da177e4 | 64 | |
668ab0db GB |
65 | if (HCC_ISOC_CACHE(params)) { |
66 | ehci_dbg(ehci, | |
6dbd682b SR |
67 | "%s hcc_params %04x caching frame %s%s%s\n", |
68 | label, params, | |
69 | HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", | |
70 | HCC_CANPARK(params) ? " park" : "", | |
71 | HCC_64BIT_ADDR(params) ? " 64 bit addr" : ""); | |
1da177e4 | 72 | } else { |
668ab0db | 73 | ehci_dbg(ehci, |
aa4d8342 | 74 | "%s hcc_params %04x thresh %d uframes %s%s%s%s%s%s%s\n", |
6dbd682b SR |
75 | label, |
76 | params, | |
77 | HCC_ISOC_THRES(params), | |
78 | HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", | |
79 | HCC_CANPARK(params) ? " park" : "", | |
aa4d8342 AD |
80 | HCC_64BIT_ADDR(params) ? " 64 bit addr" : "", |
81 | HCC_LPM(params) ? " LPM" : "", | |
82 | HCC_PER_PORT_CHANGE_EVENT(params) ? " ppce" : "", | |
83 | HCC_HW_PREFETCH(params) ? " hw prefetch" : "", | |
84 | HCC_32FRAME_PERIODIC_LIST(params) ? | |
855ef452 | 85 | " 32 periodic list" : ""); |
1da177e4 LT |
86 | } |
87 | } | |
1da177e4 | 88 | |
8234509c | 89 | static void __maybe_unused |
668ab0db | 90 | dbg_qtd(const char *label, struct ehci_hcd *ehci, struct ehci_qtd *qtd) |
1da177e4 | 91 | { |
6dbd682b SR |
92 | ehci_dbg(ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd, |
93 | hc32_to_cpup(ehci, &qtd->hw_next), | |
94 | hc32_to_cpup(ehci, &qtd->hw_alt_next), | |
95 | hc32_to_cpup(ehci, &qtd->hw_token), | |
1cb1d1c0 GB |
96 | hc32_to_cpup(ehci, &qtd->hw_buf[0])); |
97 | if (qtd->hw_buf[1]) | |
6dbd682b SR |
98 | ehci_dbg(ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n", |
99 | hc32_to_cpup(ehci, &qtd->hw_buf[1]), | |
100 | hc32_to_cpup(ehci, &qtd->hw_buf[2]), | |
101 | hc32_to_cpup(ehci, &qtd->hw_buf[3]), | |
102 | hc32_to_cpup(ehci, &qtd->hw_buf[4])); | |
1da177e4 LT |
103 | } |
104 | ||
8234509c | 105 | static void __maybe_unused |
668ab0db | 106 | dbg_qh(const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) |
1da177e4 | 107 | { |
3807e26d AD |
108 | struct ehci_qh_hw *hw = qh->hw; |
109 | ||
668ab0db | 110 | ehci_dbg(ehci, "%s qh %p n%08x info %x %x qtd %x\n", label, |
3807e26d AD |
111 | qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current); |
112 | dbg_qtd("overlay", ehci, (struct ehci_qtd *) &hw->hw_qtd_next); | |
1da177e4 LT |
113 | } |
114 | ||
8234509c | 115 | static void __maybe_unused |
668ab0db | 116 | dbg_itd(const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd) |
1da177e4 | 117 | { |
668ab0db | 118 | ehci_dbg(ehci, "%s [%d] itd %p, next %08x, urb %p\n", |
6dbd682b SR |
119 | label, itd->frame, itd, hc32_to_cpu(ehci, itd->hw_next), |
120 | itd->urb); | |
668ab0db | 121 | ehci_dbg(ehci, |
53bd6a60 | 122 | " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n", |
6dbd682b SR |
123 | hc32_to_cpu(ehci, itd->hw_transaction[0]), |
124 | hc32_to_cpu(ehci, itd->hw_transaction[1]), | |
125 | hc32_to_cpu(ehci, itd->hw_transaction[2]), | |
126 | hc32_to_cpu(ehci, itd->hw_transaction[3]), | |
127 | hc32_to_cpu(ehci, itd->hw_transaction[4]), | |
128 | hc32_to_cpu(ehci, itd->hw_transaction[5]), | |
129 | hc32_to_cpu(ehci, itd->hw_transaction[6]), | |
130 | hc32_to_cpu(ehci, itd->hw_transaction[7])); | |
668ab0db | 131 | ehci_dbg(ehci, |
53bd6a60 | 132 | " buf: %08x %08x %08x %08x %08x %08x %08x\n", |
6dbd682b SR |
133 | hc32_to_cpu(ehci, itd->hw_bufp[0]), |
134 | hc32_to_cpu(ehci, itd->hw_bufp[1]), | |
135 | hc32_to_cpu(ehci, itd->hw_bufp[2]), | |
136 | hc32_to_cpu(ehci, itd->hw_bufp[3]), | |
137 | hc32_to_cpu(ehci, itd->hw_bufp[4]), | |
138 | hc32_to_cpu(ehci, itd->hw_bufp[5]), | |
139 | hc32_to_cpu(ehci, itd->hw_bufp[6])); | |
668ab0db | 140 | ehci_dbg(ehci, " index: %d %d %d %d %d %d %d %d\n", |
1da177e4 LT |
141 | itd->index[0], itd->index[1], itd->index[2], |
142 | itd->index[3], itd->index[4], itd->index[5], | |
143 | itd->index[6], itd->index[7]); | |
144 | } | |
145 | ||
8234509c | 146 | static void __maybe_unused |
668ab0db | 147 | dbg_sitd(const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd) |
1da177e4 | 148 | { |
668ab0db | 149 | ehci_dbg(ehci, "%s [%d] sitd %p, next %08x, urb %p\n", |
6dbd682b SR |
150 | label, sitd->frame, sitd, hc32_to_cpu(ehci, sitd->hw_next), |
151 | sitd->urb); | |
668ab0db | 152 | ehci_dbg(ehci, |
53bd6a60 | 153 | " addr %08x sched %04x result %08x buf %08x %08x\n", |
6dbd682b SR |
154 | hc32_to_cpu(ehci, sitd->hw_fullspeed_ep), |
155 | hc32_to_cpu(ehci, sitd->hw_uframe), | |
156 | hc32_to_cpu(ehci, sitd->hw_results), | |
157 | hc32_to_cpu(ehci, sitd->hw_buf[0]), | |
158 | hc32_to_cpu(ehci, sitd->hw_buf[1])); | |
1da177e4 LT |
159 | } |
160 | ||
8234509c | 161 | static int __maybe_unused |
668ab0db | 162 | dbg_status_buf(char *buf, unsigned len, const char *label, u32 status) |
1da177e4 | 163 | { |
668ab0db | 164 | return scnprintf(buf, len, |
aa4d8342 | 165 | "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s%s", |
1cb1d1c0 | 166 | label, label[0] ? " " : "", status, |
aa4d8342 | 167 | (status & STS_PPCE_MASK) ? " PPCE" : "", |
1da177e4 LT |
168 | (status & STS_ASS) ? " Async" : "", |
169 | (status & STS_PSS) ? " Periodic" : "", | |
170 | (status & STS_RECL) ? " Recl" : "", | |
171 | (status & STS_HALT) ? " Halt" : "", | |
172 | (status & STS_IAA) ? " IAA" : "", | |
173 | (status & STS_FATAL) ? " FATAL" : "", | |
174 | (status & STS_FLR) ? " FLR" : "", | |
175 | (status & STS_PCD) ? " PCD" : "", | |
176 | (status & STS_ERR) ? " ERR" : "", | |
78698d66 | 177 | (status & STS_INT) ? " INT" : ""); |
1da177e4 LT |
178 | } |
179 | ||
8234509c | 180 | static int __maybe_unused |
668ab0db | 181 | dbg_intr_buf(char *buf, unsigned len, const char *label, u32 enable) |
1da177e4 | 182 | { |
668ab0db | 183 | return scnprintf(buf, len, |
aa4d8342 | 184 | "%s%sintrenable %02x%s%s%s%s%s%s%s", |
1cb1d1c0 | 185 | label, label[0] ? " " : "", enable, |
aa4d8342 | 186 | (enable & STS_PPCE_MASK) ? " PPCE" : "", |
1da177e4 LT |
187 | (enable & STS_IAA) ? " IAA" : "", |
188 | (enable & STS_FATAL) ? " FATAL" : "", | |
189 | (enable & STS_FLR) ? " FLR" : "", | |
190 | (enable & STS_PCD) ? " PCD" : "", | |
191 | (enable & STS_ERR) ? " ERR" : "", | |
78698d66 | 192 | (enable & STS_INT) ? " INT" : ""); |
1da177e4 LT |
193 | } |
194 | ||
1cb1d1c0 | 195 | static const char *const fls_strings[] = { "1024", "512", "256", "??" }; |
1da177e4 LT |
196 | |
197 | static int | |
668ab0db | 198 | dbg_command_buf(char *buf, unsigned len, const char *label, u32 command) |
1da177e4 | 199 | { |
668ab0db | 200 | return scnprintf(buf, len, |
aa4d8342 AD |
201 | "%s%scommand %07x %s%s%s%s%s%s=%d ithresh=%d%s%s%s%s " |
202 | "period=%s%s %s", | |
1cb1d1c0 | 203 | label, label[0] ? " " : "", command, |
aa4d8342 AD |
204 | (command & CMD_HIRD) ? " HIRD" : "", |
205 | (command & CMD_PPCEE) ? " PPCEE" : "", | |
206 | (command & CMD_FSP) ? " FSP" : "", | |
207 | (command & CMD_ASPE) ? " ASPE" : "", | |
208 | (command & CMD_PSPE) ? " PSPE" : "", | |
209 | (command & CMD_PARK) ? " park" : "(park)", | |
668ab0db | 210 | CMD_PARK_CNT(command), |
1da177e4 LT |
211 | (command >> 16) & 0x3f, |
212 | (command & CMD_LRESET) ? " LReset" : "", | |
213 | (command & CMD_IAAD) ? " IAAD" : "", | |
214 | (command & CMD_ASE) ? " Async" : "", | |
215 | (command & CMD_PSE) ? " Periodic" : "", | |
1cb1d1c0 | 216 | fls_strings[(command >> 2) & 0x3], |
1da177e4 | 217 | (command & CMD_RESET) ? " Reset" : "", |
78698d66 | 218 | (command & CMD_RUN) ? "RUN" : "HALT"); |
1da177e4 LT |
219 | } |
220 | ||
221 | static int | |
668ab0db | 222 | dbg_port_buf(char *buf, unsigned len, const char *label, int port, u32 status) |
1da177e4 LT |
223 | { |
224 | char *sig; | |
225 | ||
226 | /* signaling state */ | |
227 | switch (status & (3 << 10)) { | |
5bb95ec8 GB |
228 | case 0 << 10: |
229 | sig = "se0"; | |
230 | break; | |
231 | case 1 << 10: /* low speed */ | |
232 | sig = "k"; | |
233 | break; | |
234 | case 2 << 10: | |
235 | sig = "j"; | |
236 | break; | |
237 | default: | |
238 | sig = "?"; | |
239 | break; | |
1da177e4 LT |
240 | } |
241 | ||
668ab0db | 242 | return scnprintf(buf, len, |
aa4d8342 AD |
243 | "%s%sport:%d status %06x %d %s%s%s%s%s%s " |
244 | "sig=%s%s%s%s%s%s%s%s%s%s%s", | |
1cb1d1c0 | 245 | label, label[0] ? " " : "", port, status, |
c2fb0171 GB |
246 | status >> 25, /*device address */ |
247 | (status & PORT_SSTS) >> 23 == PORTSC_SUSPEND_STS_ACK ? | |
aa4d8342 | 248 | " ACK" : "", |
c2fb0171 | 249 | (status & PORT_SSTS) >> 23 == PORTSC_SUSPEND_STS_NYET ? |
aa4d8342 | 250 | " NYET" : "", |
c2fb0171 | 251 | (status & PORT_SSTS) >> 23 == PORTSC_SUSPEND_STS_STALL ? |
aa4d8342 | 252 | " STALL" : "", |
c2fb0171 | 253 | (status & PORT_SSTS) >> 23 == PORTSC_SUSPEND_STS_ERR ? |
aa4d8342 | 254 | " ERR" : "", |
1da177e4 LT |
255 | (status & PORT_POWER) ? " POWER" : "", |
256 | (status & PORT_OWNER) ? " OWNER" : "", | |
257 | sig, | |
aa4d8342 | 258 | (status & PORT_LPM) ? " LPM" : "", |
1da177e4 LT |
259 | (status & PORT_RESET) ? " RESET" : "", |
260 | (status & PORT_SUSPEND) ? " SUSPEND" : "", | |
261 | (status & PORT_RESUME) ? " RESUME" : "", | |
262 | (status & PORT_OCC) ? " OCC" : "", | |
263 | (status & PORT_OC) ? " OC" : "", | |
264 | (status & PORT_PEC) ? " PEC" : "", | |
265 | (status & PORT_PE) ? " PE" : "", | |
266 | (status & PORT_CSC) ? " CSC" : "", | |
6dbd682b | 267 | (status & PORT_CONNECT) ? " CONNECT" : ""); |
1da177e4 LT |
268 | } |
269 | ||
1f8e5afd GB |
270 | static inline void |
271 | dbg_status(struct ehci_hcd *ehci, const char *label, u32 status) | |
272 | { | |
273 | char buf[80]; | |
274 | ||
275 | dbg_status_buf(buf, sizeof(buf), label, status); | |
276 | ehci_dbg(ehci, "%s\n", buf); | |
1da177e4 LT |
277 | } |
278 | ||
1f8e5afd GB |
279 | static inline void |
280 | dbg_cmd(struct ehci_hcd *ehci, const char *label, u32 command) | |
281 | { | |
282 | char buf[80]; | |
283 | ||
284 | dbg_command_buf(buf, sizeof(buf), label, command); | |
285 | ehci_dbg(ehci, "%s\n", buf); | |
1da177e4 LT |
286 | } |
287 | ||
1f8e5afd GB |
288 | static inline void |
289 | dbg_port(struct ehci_hcd *ehci, const char *label, int port, u32 status) | |
290 | { | |
291 | char buf[80]; | |
292 | ||
293 | dbg_port_buf(buf, sizeof(buf), label, port, status); | |
294 | ehci_dbg(ehci, "%s\n", buf); | |
1da177e4 LT |
295 | } |
296 | ||
297 | /*-------------------------------------------------------------------------*/ | |
298 | ||
694cc208 TJ |
299 | /* troubleshooting help: expose state in debugfs */ |
300 | ||
301 | static int debug_async_open(struct inode *, struct file *); | |
d0ce5c6b | 302 | static int debug_bandwidth_open(struct inode *, struct file *); |
694cc208 TJ |
303 | static int debug_periodic_open(struct inode *, struct file *); |
304 | static int debug_registers_open(struct inode *, struct file *); | |
aa4d8342 | 305 | |
694cc208 TJ |
306 | static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); |
307 | static int debug_close(struct inode *, struct file *); | |
308 | ||
309 | static const struct file_operations debug_async_fops = { | |
310 | .owner = THIS_MODULE, | |
311 | .open = debug_async_open, | |
312 | .read = debug_output, | |
313 | .release = debug_close, | |
6038f373 | 314 | .llseek = default_llseek, |
694cc208 | 315 | }; |
e1666317 | 316 | |
d0ce5c6b AS |
317 | static const struct file_operations debug_bandwidth_fops = { |
318 | .owner = THIS_MODULE, | |
319 | .open = debug_bandwidth_open, | |
320 | .read = debug_output, | |
321 | .release = debug_close, | |
322 | .llseek = default_llseek, | |
323 | }; | |
e1666317 | 324 | |
694cc208 TJ |
325 | static const struct file_operations debug_periodic_fops = { |
326 | .owner = THIS_MODULE, | |
327 | .open = debug_periodic_open, | |
328 | .read = debug_output, | |
329 | .release = debug_close, | |
6038f373 | 330 | .llseek = default_llseek, |
694cc208 | 331 | }; |
e1666317 | 332 | |
694cc208 TJ |
333 | static const struct file_operations debug_registers_fops = { |
334 | .owner = THIS_MODULE, | |
335 | .open = debug_registers_open, | |
336 | .read = debug_output, | |
337 | .release = debug_close, | |
6038f373 | 338 | .llseek = default_llseek, |
694cc208 TJ |
339 | }; |
340 | ||
341 | static struct dentry *ehci_debug_root; | |
342 | ||
343 | struct debug_buffer { | |
344 | ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ | |
345 | struct usb_bus *bus; | |
346 | struct mutex mutex; /* protect filling of buffer */ | |
347 | size_t count; /* number of characters filled into buffer */ | |
3c04e20e ML |
348 | char *output_buf; |
349 | size_t alloc_size; | |
694cc208 | 350 | }; |
1da177e4 | 351 | |
1f8e5afd GB |
352 | static inline char speed_char(u32 info1) |
353 | { | |
354 | switch (info1 & (3 << 12)) { | |
355 | case QH_FULL_SPEED: | |
356 | return 'f'; | |
357 | case QH_LOW_SPEED: | |
358 | return 'l'; | |
359 | case QH_HIGH_SPEED: | |
360 | return 'h'; | |
361 | default: | |
362 | return '?'; | |
363 | } | |
364 | } | |
1da177e4 | 365 | |
6dbd682b | 366 | static inline char token_mark(struct ehci_hcd *ehci, __hc32 token) |
1da177e4 | 367 | { |
6dbd682b SR |
368 | __u32 v = hc32_to_cpu(ehci, token); |
369 | ||
1da177e4 LT |
370 | if (v & QTD_STS_ACTIVE) |
371 | return '*'; | |
372 | if (v & QTD_STS_HALT) | |
373 | return '-'; | |
668ab0db | 374 | if (!IS_SHORT_READ(v)) |
1da177e4 LT |
375 | return ' '; |
376 | /* tries to advance through hw_alt_next */ | |
377 | return '/'; | |
378 | } | |
379 | ||
c768ffb8 GB |
380 | static void qh_lines(struct ehci_hcd *ehci, struct ehci_qh *qh, |
381 | char **nextp, unsigned *sizep) | |
1da177e4 LT |
382 | { |
383 | u32 scratch; | |
384 | u32 hw_curr; | |
385 | struct list_head *entry; | |
386 | struct ehci_qtd *td; | |
387 | unsigned temp; | |
388 | unsigned size = *sizep; | |
389 | char *next = *nextp; | |
390 | char mark; | |
fd05e720 | 391 | __le32 list_end = EHCI_LIST_END(ehci); |
3807e26d | 392 | struct ehci_qh_hw *hw = qh->hw; |
1da177e4 | 393 | |
3807e26d | 394 | if (hw->hw_qtd_next == list_end) /* NEC does this */ |
1da177e4 LT |
395 | mark = '@'; |
396 | else | |
3807e26d | 397 | mark = token_mark(ehci, hw->hw_token); |
1da177e4 | 398 | if (mark == '/') { /* qh_alt_next controls qh advance? */ |
3807e26d AD |
399 | if ((hw->hw_alt_next & QTD_MASK(ehci)) |
400 | == ehci->async->hw->hw_alt_next) | |
1da177e4 | 401 | mark = '#'; /* blocked */ |
3807e26d | 402 | else if (hw->hw_alt_next == list_end) |
1da177e4 LT |
403 | mark = '.'; /* use hw_qtd_next */ |
404 | /* else alt_next points to some other qtd */ | |
405 | } | |
3807e26d AD |
406 | scratch = hc32_to_cpup(ehci, &hw->hw_info1); |
407 | hw_curr = (mark == '*') ? hc32_to_cpup(ehci, &hw->hw_current) : 0; | |
668ab0db | 408 | temp = scnprintf(next, size, |
8ee10d62 AS |
409 | "qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)" |
410 | " [cur %08x next %08x buf[0] %08x]", | |
1da177e4 LT |
411 | qh, scratch & 0x007f, |
412 | speed_char (scratch), | |
413 | (scratch >> 8) & 0x000f, | |
3807e26d AD |
414 | scratch, hc32_to_cpup(ehci, &hw->hw_info2), |
415 | hc32_to_cpup(ehci, &hw->hw_token), mark, | |
416 | (cpu_to_hc32(ehci, QTD_TOGGLE) & hw->hw_token) | |
1da177e4 | 417 | ? "data1" : "data0", |
8ee10d62 AS |
418 | (hc32_to_cpup(ehci, &hw->hw_alt_next) >> 1) & 0x0f, |
419 | hc32_to_cpup(ehci, &hw->hw_current), | |
420 | hc32_to_cpup(ehci, &hw->hw_qtd_next), | |
421 | hc32_to_cpup(ehci, &hw->hw_buf[0])); | |
1da177e4 LT |
422 | size -= temp; |
423 | next += temp; | |
424 | ||
425 | /* hc may be modifying the list as we read it ... */ | |
668ab0db | 426 | list_for_each(entry, &qh->qtd_list) { |
5bb95ec8 GB |
427 | char *type; |
428 | ||
668ab0db | 429 | td = list_entry(entry, struct ehci_qtd, qtd_list); |
6dbd682b | 430 | scratch = hc32_to_cpup(ehci, &td->hw_token); |
1da177e4 | 431 | mark = ' '; |
04b8ad43 | 432 | if (hw_curr == td->qtd_dma) { |
1da177e4 | 433 | mark = '*'; |
04b8ad43 | 434 | } else if (hw->hw_qtd_next == cpu_to_hc32(ehci, td->qtd_dma)) { |
1da177e4 | 435 | mark = '+'; |
04b8ad43 | 436 | } else if (QTD_LENGTH(scratch)) { |
3807e26d | 437 | if (td->hw_alt_next == ehci->async->hw->hw_alt_next) |
1da177e4 | 438 | mark = '#'; |
6dbd682b | 439 | else if (td->hw_alt_next != list_end) |
1da177e4 LT |
440 | mark = '/'; |
441 | } | |
5bb95ec8 GB |
442 | switch ((scratch >> 8) & 0x03) { |
443 | case 0: | |
444 | type = "out"; | |
445 | break; | |
446 | case 1: | |
447 | type = "in"; | |
448 | break; | |
449 | case 2: | |
450 | type = "setup"; | |
451 | break; | |
452 | default: | |
453 | type = "?"; | |
454 | break; | |
455 | } | |
a5355977 | 456 | temp = scnprintf(next, size, |
8ee10d62 AS |
457 | "\n\t%p%c%s len=%d %08x urb %p" |
458 | " [td %08x buf[0] %08x]", | |
5bb95ec8 | 459 | td, mark, type, |
1da177e4 LT |
460 | (scratch >> 16) & 0x7fff, |
461 | scratch, | |
8ee10d62 AS |
462 | td->urb, |
463 | (u32) td->qtd_dma, | |
464 | hc32_to_cpup(ehci, &td->hw_buf[0])); | |
1da177e4 LT |
465 | size -= temp; |
466 | next += temp; | |
467 | if (temp == size) | |
468 | goto done; | |
469 | } | |
470 | ||
a5355977 | 471 | temp = scnprintf(next, size, "\n"); |
1da177e4 LT |
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); |
668ab0db | 490 | ehci = hcd_to_ehci(hcd); |
3c04e20e ML |
491 | next = buf->output_buf; |
492 | size = buf->alloc_size; | |
1da177e4 | 493 | |
694cc208 TJ |
494 | *next = 0; |
495 | ||
0784b4d5 GB |
496 | /* |
497 | * dumps a snapshot of the async schedule. | |
1da177e4 LT |
498 | * usually empty except for long-term bulk reads, or head. |
499 | * one QH per line, and TDs we know about | |
500 | */ | |
668ab0db | 501 | spin_lock_irqsave(&ehci->lock, flags); |
1da177e4 | 502 | for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh) |
668ab0db | 503 | qh_lines(ehci, qh, &next, &size); |
6e018751 | 504 | if (!list_empty(&ehci->async_unlink) && size > 0) { |
99ac5b1e | 505 | temp = scnprintf(next, size, "\nunlink =\n"); |
1da177e4 LT |
506 | size -= temp; |
507 | next += temp; | |
508 | ||
6e018751 AS |
509 | list_for_each_entry(qh, &ehci->async_unlink, unlink_node) { |
510 | if (size <= 0) | |
511 | break; | |
512 | qh_lines(ehci, qh, &next, &size); | |
513 | } | |
1da177e4 | 514 | } |
668ab0db | 515 | spin_unlock_irqrestore(&ehci->lock, flags); |
1da177e4 | 516 | |
3c04e20e | 517 | return strlen(buf->output_buf); |
1da177e4 | 518 | } |
1da177e4 | 519 | |
d0ce5c6b AS |
520 | static ssize_t fill_bandwidth_buffer(struct debug_buffer *buf) |
521 | { | |
522 | struct ehci_hcd *ehci; | |
b35c5009 AS |
523 | struct ehci_tt *tt; |
524 | struct ehci_per_sched *ps; | |
d0ce5c6b AS |
525 | unsigned temp, size; |
526 | char *next; | |
527 | unsigned i; | |
528 | u8 *bw; | |
b35c5009 AS |
529 | u16 *bf; |
530 | u8 budget[EHCI_BANDWIDTH_SIZE]; | |
d0ce5c6b AS |
531 | |
532 | ehci = hcd_to_ehci(bus_to_hcd(buf->bus)); | |
533 | next = buf->output_buf; | |
534 | size = buf->alloc_size; | |
535 | ||
536 | *next = 0; | |
537 | ||
538 | spin_lock_irq(&ehci->lock); | |
539 | ||
540 | /* Dump the HS bandwidth table */ | |
541 | temp = scnprintf(next, size, | |
542 | "HS bandwidth allocation (us per microframe)\n"); | |
543 | size -= temp; | |
544 | next += temp; | |
545 | for (i = 0; i < EHCI_BANDWIDTH_SIZE; i += 8) { | |
546 | bw = &ehci->bandwidth[i]; | |
547 | temp = scnprintf(next, size, | |
548 | "%2u: %4u%4u%4u%4u%4u%4u%4u%4u\n", | |
549 | i, bw[0], bw[1], bw[2], bw[3], | |
550 | bw[4], bw[5], bw[6], bw[7]); | |
551 | size -= temp; | |
552 | next += temp; | |
553 | } | |
b35c5009 AS |
554 | |
555 | /* Dump all the FS/LS tables */ | |
556 | list_for_each_entry(tt, &ehci->tt_list, tt_list) { | |
557 | temp = scnprintf(next, size, | |
558 | "\nTT %s port %d FS/LS bandwidth allocation (us per frame)\n", | |
559 | dev_name(&tt->usb_tt->hub->dev), | |
560 | tt->tt_port + !!tt->usb_tt->multi); | |
561 | size -= temp; | |
562 | next += temp; | |
563 | ||
564 | bf = tt->bandwidth; | |
565 | temp = scnprintf(next, size, | |
566 | " %5u%5u%5u%5u%5u%5u%5u%5u\n", | |
567 | bf[0], bf[1], bf[2], bf[3], | |
568 | bf[4], bf[5], bf[6], bf[7]); | |
569 | size -= temp; | |
570 | next += temp; | |
571 | ||
572 | temp = scnprintf(next, size, | |
573 | "FS/LS budget (us per microframe)\n"); | |
574 | size -= temp; | |
575 | next += temp; | |
576 | compute_tt_budget(budget, tt); | |
577 | for (i = 0; i < EHCI_BANDWIDTH_SIZE; i += 8) { | |
578 | bw = &budget[i]; | |
579 | temp = scnprintf(next, size, | |
580 | "%2u: %4u%4u%4u%4u%4u%4u%4u%4u\n", | |
581 | i, bw[0], bw[1], bw[2], bw[3], | |
582 | bw[4], bw[5], bw[6], bw[7]); | |
583 | size -= temp; | |
584 | next += temp; | |
585 | } | |
586 | list_for_each_entry(ps, &tt->ps_list, ps_list) { | |
587 | temp = scnprintf(next, size, | |
588 | "%s ep %02x: %4u @ %2u.%u+%u mask %04x\n", | |
589 | dev_name(&ps->udev->dev), | |
590 | ps->ep->desc.bEndpointAddress, | |
591 | ps->tt_usecs, | |
592 | ps->bw_phase, ps->phase_uf, | |
593 | ps->bw_period, ps->cs_mask); | |
594 | size -= temp; | |
595 | next += temp; | |
596 | } | |
597 | } | |
d0ce5c6b AS |
598 | spin_unlock_irq(&ehci->lock); |
599 | ||
600 | return next - buf->output_buf; | |
601 | } | |
602 | ||
3fd29009 GB |
603 | static unsigned output_buf_tds_dir(char *buf, struct ehci_hcd *ehci, |
604 | struct ehci_qh_hw *hw, struct ehci_qh *qh, unsigned size) | |
605 | { | |
606 | u32 scratch = hc32_to_cpup(ehci, &hw->hw_info1); | |
607 | struct ehci_qtd *qtd; | |
608 | char *type = ""; | |
609 | unsigned temp = 0; | |
610 | ||
611 | /* count tds, get ep direction */ | |
612 | list_for_each_entry(qtd, &qh->qtd_list, qtd_list) { | |
613 | temp++; | |
614 | switch ((hc32_to_cpu(ehci, qtd->hw_token) >> 8) & 0x03) { | |
615 | case 0: | |
616 | type = "out"; | |
617 | continue; | |
618 | case 1: | |
619 | type = "in"; | |
620 | continue; | |
621 | } | |
622 | } | |
623 | ||
624 | return scnprintf(buf, size, " (%c%d ep%d%s [%d/%d] q%d p%d)", | |
625 | speed_char(scratch), scratch & 0x007f, | |
626 | (scratch >> 8) & 0x000f, type, qh->ps.usecs, | |
627 | qh->ps.c_usecs, temp, 0x7ff & (scratch >> 16)); | |
628 | } | |
629 | ||
1da177e4 | 630 | #define DBG_SCHED_LIMIT 64 |
694cc208 | 631 | static ssize_t fill_periodic_buffer(struct debug_buffer *buf) |
1da177e4 | 632 | { |
1da177e4 LT |
633 | struct usb_hcd *hcd; |
634 | struct ehci_hcd *ehci; | |
635 | unsigned long flags; | |
636 | union ehci_shadow p, *seen; | |
637 | unsigned temp, size, seen_count; | |
638 | char *next; | |
639 | unsigned i; | |
6dbd682b | 640 | __hc32 tag; |
1da177e4 | 641 | |
cb272521 | 642 | seen = kmalloc_array(DBG_SCHED_LIMIT, sizeof(*seen), GFP_ATOMIC); |
911fdb6e | 643 | if (!seen) |
1da177e4 LT |
644 | return 0; |
645 | seen_count = 0; | |
646 | ||
694cc208 | 647 | hcd = bus_to_hcd(buf->bus); |
668ab0db | 648 | ehci = hcd_to_ehci(hcd); |
3c04e20e ML |
649 | next = buf->output_buf; |
650 | size = buf->alloc_size; | |
1da177e4 | 651 | |
668ab0db | 652 | temp = scnprintf(next, size, "size = %d\n", ehci->periodic_size); |
1da177e4 LT |
653 | size -= temp; |
654 | next += temp; | |
655 | ||
0784b4d5 GB |
656 | /* |
657 | * dump a snapshot of the periodic schedule. | |
1da177e4 LT |
658 | * iso changes, interrupt usually doesn't. |
659 | */ | |
668ab0db | 660 | spin_lock_irqsave(&ehci->lock, flags); |
1da177e4 | 661 | for (i = 0; i < ehci->periodic_size; i++) { |
1cb1d1c0 | 662 | p = ehci->pshadow[i]; |
668ab0db | 663 | if (likely(!p.ptr)) |
1da177e4 | 664 | continue; |
1cb1d1c0 | 665 | tag = Q_NEXT_TYPE(ehci, ehci->periodic[i]); |
1da177e4 | 666 | |
668ab0db | 667 | temp = scnprintf(next, size, "%4d: ", i); |
1da177e4 LT |
668 | size -= temp; |
669 | next += temp; | |
670 | ||
671 | do { | |
3807e26d AD |
672 | struct ehci_qh_hw *hw; |
673 | ||
6dbd682b | 674 | switch (hc32_to_cpu(ehci, tag)) { |
1da177e4 | 675 | case Q_TYPE_QH: |
3807e26d | 676 | hw = p.qh->hw; |
668ab0db | 677 | temp = scnprintf(next, size, " qh%d-%04x/%p", |
ffa0248e | 678 | p.qh->ps.period, |
6dbd682b | 679 | hc32_to_cpup(ehci, |
3807e26d | 680 | &hw->hw_info2) |
1da177e4 | 681 | /* uframe masks */ |
7dedacf4 | 682 | & (QH_CMASK | QH_SMASK), |
1da177e4 LT |
683 | p.qh); |
684 | size -= temp; | |
685 | next += temp; | |
686 | /* don't repeat what follows this qh */ | |
687 | for (temp = 0; temp < seen_count; temp++) { | |
1cb1d1c0 | 688 | if (seen[temp].ptr != p.ptr) |
1da177e4 | 689 | continue; |
3c4bb71f | 690 | if (p.qh->qh_next.ptr) { |
668ab0db | 691 | temp = scnprintf(next, size, |
1da177e4 | 692 | " ..."); |
3c4bb71f ML |
693 | size -= temp; |
694 | next += temp; | |
695 | } | |
1da177e4 LT |
696 | break; |
697 | } | |
698 | /* show more info the first time around */ | |
3c4bb71f | 699 | if (temp == seen_count) { |
3fd29009 GB |
700 | temp = output_buf_tds_dir(next, ehci, |
701 | hw, p.qh, size); | |
1da177e4 LT |
702 | |
703 | if (seen_count < DBG_SCHED_LIMIT) | |
1cb1d1c0 | 704 | seen[seen_count++].qh = p.qh; |
04b8ad43 | 705 | } else { |
1da177e4 | 706 | temp = 0; |
04b8ad43 | 707 | } |
17dcfc9b AS |
708 | tag = Q_NEXT_TYPE(ehci, hw->hw_next); |
709 | p = p.qh->qh_next; | |
1da177e4 LT |
710 | break; |
711 | case Q_TYPE_FSTN: | |
668ab0db | 712 | temp = scnprintf(next, size, |
1da177e4 LT |
713 | " fstn-%8x/%p", p.fstn->hw_prev, |
714 | p.fstn); | |
6dbd682b | 715 | tag = Q_NEXT_TYPE(ehci, p.fstn->hw_next); |
1da177e4 LT |
716 | p = p.fstn->fstn_next; |
717 | break; | |
718 | case Q_TYPE_ITD: | |
668ab0db | 719 | temp = scnprintf(next, size, |
1da177e4 | 720 | " itd/%p", p.itd); |
6dbd682b | 721 | tag = Q_NEXT_TYPE(ehci, p.itd->hw_next); |
1da177e4 LT |
722 | p = p.itd->itd_next; |
723 | break; | |
724 | case Q_TYPE_SITD: | |
668ab0db | 725 | temp = scnprintf(next, size, |
1da177e4 | 726 | " sitd%d-%04x/%p", |
ffa0248e | 727 | p.sitd->stream->ps.period, |
6dbd682b | 728 | hc32_to_cpup(ehci, &p.sitd->hw_uframe) |
1da177e4 LT |
729 | & 0x0000ffff, |
730 | p.sitd); | |
6dbd682b | 731 | tag = Q_NEXT_TYPE(ehci, p.sitd->hw_next); |
1da177e4 LT |
732 | p = p.sitd->sitd_next; |
733 | break; | |
734 | } | |
735 | size -= temp; | |
736 | next += temp; | |
737 | } while (p.ptr); | |
738 | ||
668ab0db | 739 | temp = scnprintf(next, size, "\n"); |
1da177e4 LT |
740 | size -= temp; |
741 | next += temp; | |
742 | } | |
668ab0db GB |
743 | spin_unlock_irqrestore(&ehci->lock, flags); |
744 | kfree(seen); | |
1da177e4 | 745 | |
3c04e20e | 746 | return buf->alloc_size - size; |
1da177e4 | 747 | } |
1da177e4 LT |
748 | #undef DBG_SCHED_LIMIT |
749 | ||
e8799906 AS |
750 | static const char *rh_state_string(struct ehci_hcd *ehci) |
751 | { | |
752 | switch (ehci->rh_state) { | |
753 | case EHCI_RH_HALTED: | |
754 | return "halted"; | |
755 | case EHCI_RH_SUSPENDED: | |
756 | return "suspended"; | |
757 | case EHCI_RH_RUNNING: | |
758 | return "running"; | |
c0c53dbc AS |
759 | case EHCI_RH_STOPPING: |
760 | return "stopping"; | |
e8799906 AS |
761 | } |
762 | return "?"; | |
763 | } | |
764 | ||
694cc208 | 765 | static ssize_t fill_registers_buffer(struct debug_buffer *buf) |
1da177e4 | 766 | { |
1da177e4 LT |
767 | struct usb_hcd *hcd; |
768 | struct ehci_hcd *ehci; | |
769 | unsigned long flags; | |
770 | unsigned temp, size, i; | |
1cb1d1c0 GB |
771 | char *next, scratch[80]; |
772 | static char fmt[] = "%*s\n"; | |
773 | static char label[] = ""; | |
1da177e4 | 774 | |
694cc208 | 775 | hcd = bus_to_hcd(buf->bus); |
668ab0db | 776 | ehci = hcd_to_ehci(hcd); |
3c04e20e ML |
777 | next = buf->output_buf; |
778 | size = buf->alloc_size; | |
1da177e4 | 779 | |
668ab0db | 780 | spin_lock_irqsave(&ehci->lock, flags); |
1da177e4 | 781 | |
541c7d43 | 782 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
668ab0db | 783 | size = scnprintf(next, size, |
2b70f073 | 784 | "bus %s, device %s\n" |
d49d4317 | 785 | "%s\n" |
1da177e4 LT |
786 | "SUSPENDED (no register access)\n", |
787 | hcd->self.controller->bus->name, | |
7071a3ce | 788 | dev_name(hcd->self.controller), |
d49d4317 | 789 | hcd->product_desc); |
1da177e4 LT |
790 | goto done; |
791 | } | |
792 | ||
793 | /* Capability Registers */ | |
c430131a | 794 | i = HC_VERSION(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); |
668ab0db | 795 | temp = scnprintf(next, size, |
2b70f073 | 796 | "bus %s, device %s\n" |
d49d4317 | 797 | "%s\n" |
e8799906 | 798 | "EHCI %x.%02x, rh state %s\n", |
1da177e4 | 799 | hcd->self.controller->bus->name, |
7071a3ce | 800 | dev_name(hcd->self.controller), |
d49d4317 | 801 | hcd->product_desc, |
e8799906 | 802 | i >> 8, i & 0x0ff, rh_state_string(ehci)); |
1da177e4 LT |
803 | size -= temp; |
804 | next += temp; | |
805 | ||
d49d4317 DB |
806 | #ifdef CONFIG_PCI |
807 | /* EHCI 0.96 and later may have "extended capabilities" */ | |
e10e6f43 | 808 | if (dev_is_pci(hcd->self.controller)) { |
d49d4317 DB |
809 | struct pci_dev *pdev; |
810 | u32 offset, cap, cap2; | |
c2fb0171 | 811 | unsigned count = 256 / 4; |
d49d4317 DB |
812 | |
813 | pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); | |
6dbd682b SR |
814 | offset = HCC_EXT_CAPS(ehci_readl(ehci, |
815 | &ehci->caps->hcc_params)); | |
d49d4317 | 816 | while (offset && count--) { |
668ab0db | 817 | pci_read_config_dword(pdev, offset, &cap); |
d49d4317 DB |
818 | switch (cap & 0xff) { |
819 | case 1: | |
668ab0db | 820 | temp = scnprintf(next, size, |
d49d4317 DB |
821 | "ownership %08x%s%s\n", cap, |
822 | (cap & (1 << 24)) ? " linux" : "", | |
823 | (cap & (1 << 16)) ? " firmware" : ""); | |
824 | size -= temp; | |
825 | next += temp; | |
826 | ||
827 | offset += 4; | |
668ab0db GB |
828 | pci_read_config_dword(pdev, offset, &cap2); |
829 | temp = scnprintf(next, size, | |
d49d4317 DB |
830 | "SMI sts/enable 0x%08x\n", cap2); |
831 | size -= temp; | |
832 | next += temp; | |
833 | break; | |
834 | case 0: /* illegal reserved capability */ | |
835 | cap = 0; | |
836 | /* FALLTHROUGH */ | |
837 | default: /* unknown */ | |
838 | break; | |
839 | } | |
840 | temp = (cap >> 8) & 0xff; | |
841 | } | |
842 | } | |
843 | #endif | |
844 | ||
0784b4d5 | 845 | /* FIXME interpret both types of params */ |
083522d7 | 846 | i = ehci_readl(ehci, &ehci->caps->hcs_params); |
668ab0db | 847 | temp = scnprintf(next, size, "structural params 0x%08x\n", i); |
1da177e4 LT |
848 | size -= temp; |
849 | next += temp; | |
850 | ||
083522d7 | 851 | i = ehci_readl(ehci, &ehci->caps->hcc_params); |
668ab0db | 852 | temp = scnprintf(next, size, "capability params 0x%08x\n", i); |
1da177e4 LT |
853 | size -= temp; |
854 | next += temp; | |
855 | ||
856 | /* Operational Registers */ | |
668ab0db | 857 | temp = dbg_status_buf(scratch, sizeof(scratch), label, |
083522d7 | 858 | ehci_readl(ehci, &ehci->regs->status)); |
668ab0db | 859 | temp = scnprintf(next, size, fmt, temp, scratch); |
1da177e4 LT |
860 | size -= temp; |
861 | next += temp; | |
862 | ||
668ab0db | 863 | temp = dbg_command_buf(scratch, sizeof(scratch), label, |
083522d7 | 864 | ehci_readl(ehci, &ehci->regs->command)); |
668ab0db | 865 | temp = scnprintf(next, size, fmt, temp, scratch); |
1da177e4 LT |
866 | size -= temp; |
867 | next += temp; | |
868 | ||
668ab0db | 869 | temp = dbg_intr_buf(scratch, sizeof(scratch), label, |
083522d7 | 870 | ehci_readl(ehci, &ehci->regs->intr_enable)); |
668ab0db | 871 | temp = scnprintf(next, size, fmt, temp, scratch); |
1da177e4 LT |
872 | size -= temp; |
873 | next += temp; | |
874 | ||
668ab0db | 875 | temp = scnprintf(next, size, "uframe %04x\n", |
68aa95d5 | 876 | ehci_read_frame_index(ehci)); |
1da177e4 LT |
877 | size -= temp; |
878 | next += temp; | |
879 | ||
668ab0db GB |
880 | for (i = 1; i <= HCS_N_PORTS(ehci->hcs_params); i++) { |
881 | temp = dbg_port_buf(scratch, sizeof(scratch), label, i, | |
6dbd682b SR |
882 | ehci_readl(ehci, |
883 | &ehci->regs->port_status[i - 1])); | |
668ab0db | 884 | temp = scnprintf(next, size, fmt, temp, scratch); |
1da177e4 LT |
885 | size -= temp; |
886 | next += temp; | |
d49d4317 | 887 | if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) { |
668ab0db | 888 | temp = scnprintf(next, size, |
d49d4317 | 889 | " debug control %08x\n", |
6dbd682b SR |
890 | ehci_readl(ehci, |
891 | &ehci->debug->control)); | |
d49d4317 DB |
892 | size -= temp; |
893 | next += temp; | |
894 | } | |
1da177e4 LT |
895 | } |
896 | ||
6e018751 | 897 | if (!list_empty(&ehci->async_unlink)) { |
99ac5b1e | 898 | temp = scnprintf(next, size, "async unlink qh %p\n", |
6e018751 AS |
899 | list_first_entry(&ehci->async_unlink, |
900 | struct ehci_qh, unlink_node)); | |
1da177e4 LT |
901 | size -= temp; |
902 | next += temp; | |
903 | } | |
904 | ||
905 | #ifdef EHCI_STATS | |
668ab0db | 906 | temp = scnprintf(next, size, |
99ac5b1e AS |
907 | "irq normal %ld err %ld iaa %ld (lost %ld)\n", |
908 | ehci->stats.normal, ehci->stats.error, ehci->stats.iaa, | |
1da177e4 LT |
909 | ehci->stats.lost_iaa); |
910 | size -= temp; | |
911 | next += temp; | |
912 | ||
668ab0db | 913 | temp = scnprintf(next, size, "complete %ld unlink %ld\n", |
1da177e4 LT |
914 | ehci->stats.complete, ehci->stats.unlink); |
915 | size -= temp; | |
916 | next += temp; | |
917 | #endif | |
918 | ||
919 | done: | |
668ab0db | 920 | spin_unlock_irqrestore(&ehci->lock, flags); |
1da177e4 | 921 | |
3c04e20e | 922 | return buf->alloc_size - size; |
1da177e4 | 923 | } |
1da177e4 | 924 | |
694cc208 | 925 | static struct debug_buffer *alloc_buffer(struct usb_bus *bus, |
c768ffb8 | 926 | ssize_t (*fill_func)(struct debug_buffer *)) |
1da177e4 | 927 | { |
694cc208 TJ |
928 | struct debug_buffer *buf; |
929 | ||
12ef7dd9 | 930 | buf = kzalloc(sizeof(*buf), GFP_KERNEL); |
1da177e4 | 931 | |
694cc208 TJ |
932 | if (buf) { |
933 | buf->bus = bus; | |
934 | buf->fill_func = fill_func; | |
935 | mutex_init(&buf->mutex); | |
3c04e20e | 936 | buf->alloc_size = PAGE_SIZE; |
694cc208 TJ |
937 | } |
938 | ||
939 | return buf; | |
1da177e4 LT |
940 | } |
941 | ||
694cc208 | 942 | static int fill_buffer(struct debug_buffer *buf) |
1da177e4 | 943 | { |
694cc208 TJ |
944 | int ret = 0; |
945 | ||
3c04e20e | 946 | if (!buf->output_buf) |
73f35c60 | 947 | buf->output_buf = vmalloc(buf->alloc_size); |
694cc208 | 948 | |
3c04e20e | 949 | if (!buf->output_buf) { |
694cc208 TJ |
950 | ret = -ENOMEM; |
951 | goto out; | |
952 | } | |
953 | ||
954 | ret = buf->fill_func(buf); | |
1da177e4 | 955 | |
694cc208 TJ |
956 | if (ret >= 0) { |
957 | buf->count = ret; | |
958 | ret = 0; | |
959 | } | |
960 | ||
961 | out: | |
962 | return ret; | |
1da177e4 LT |
963 | } |
964 | ||
694cc208 | 965 | static ssize_t debug_output(struct file *file, char __user *user_buf, |
c768ffb8 | 966 | size_t len, loff_t *offset) |
694cc208 TJ |
967 | { |
968 | struct debug_buffer *buf = file->private_data; | |
969 | int ret = 0; | |
970 | ||
971 | mutex_lock(&buf->mutex); | |
972 | if (buf->count == 0) { | |
973 | ret = fill_buffer(buf); | |
974 | if (ret != 0) { | |
975 | mutex_unlock(&buf->mutex); | |
976 | goto out; | |
977 | } | |
978 | } | |
979 | mutex_unlock(&buf->mutex); | |
980 | ||
981 | ret = simple_read_from_buffer(user_buf, len, offset, | |
3c04e20e | 982 | buf->output_buf, buf->count); |
694cc208 TJ |
983 | |
984 | out: | |
985 | return ret; | |
694cc208 TJ |
986 | } |
987 | ||
988 | static int debug_close(struct inode *inode, struct file *file) | |
989 | { | |
990 | struct debug_buffer *buf = file->private_data; | |
1da177e4 | 991 | |
694cc208 | 992 | if (buf) { |
f8086a07 | 993 | vfree(buf->output_buf); |
694cc208 TJ |
994 | kfree(buf); |
995 | } | |
996 | ||
997 | return 0; | |
998 | } | |
d0ce5c6b | 999 | |
694cc208 TJ |
1000 | static int debug_async_open(struct inode *inode, struct file *file) |
1001 | { | |
1002 | file->private_data = alloc_buffer(inode->i_private, fill_async_buffer); | |
1003 | ||
1004 | return file->private_data ? 0 : -ENOMEM; | |
1005 | } | |
1006 | ||
d0ce5c6b AS |
1007 | static int debug_bandwidth_open(struct inode *inode, struct file *file) |
1008 | { | |
1009 | file->private_data = alloc_buffer(inode->i_private, | |
1010 | fill_bandwidth_buffer); | |
1011 | ||
1012 | return file->private_data ? 0 : -ENOMEM; | |
1013 | } | |
1014 | ||
694cc208 TJ |
1015 | static int debug_periodic_open(struct inode *inode, struct file *file) |
1016 | { | |
3c04e20e | 1017 | struct debug_buffer *buf; |
8d587d64 | 1018 | |
3c04e20e ML |
1019 | buf = alloc_buffer(inode->i_private, fill_periodic_buffer); |
1020 | if (!buf) | |
1021 | return -ENOMEM; | |
694cc208 | 1022 | |
c2fb0171 | 1023 | buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8) * PAGE_SIZE; |
3c04e20e ML |
1024 | file->private_data = buf; |
1025 | return 0; | |
694cc208 TJ |
1026 | } |
1027 | ||
1028 | static int debug_registers_open(struct inode *inode, struct file *file) | |
1029 | { | |
1030 | file->private_data = alloc_buffer(inode->i_private, | |
1031 | fill_registers_buffer); | |
1032 | ||
1033 | return file->private_data ? 0 : -ENOMEM; | |
1034 | } | |
1035 | ||
668ab0db | 1036 | static inline void create_debug_files(struct ehci_hcd *ehci) |
694cc208 TJ |
1037 | { |
1038 | struct usb_bus *bus = &ehci_to_hcd(ehci)->self; | |
1039 | ||
1040 | ehci->debug_dir = debugfs_create_dir(bus->bus_name, ehci_debug_root); | |
1041 | if (!ehci->debug_dir) | |
185c9bcf ML |
1042 | return; |
1043 | ||
1044 | if (!debugfs_create_file("async", S_IRUGO, ehci->debug_dir, bus, | |
1045 | &debug_async_fops)) | |
1046 | goto file_error; | |
1047 | ||
d0ce5c6b AS |
1048 | if (!debugfs_create_file("bandwidth", S_IRUGO, ehci->debug_dir, bus, |
1049 | &debug_bandwidth_fops)) | |
1050 | goto file_error; | |
1051 | ||
185c9bcf ML |
1052 | if (!debugfs_create_file("periodic", S_IRUGO, ehci->debug_dir, bus, |
1053 | &debug_periodic_fops)) | |
1054 | goto file_error; | |
1055 | ||
1056 | if (!debugfs_create_file("registers", S_IRUGO, ehci->debug_dir, bus, | |
1057 | &debug_registers_fops)) | |
1058 | goto file_error; | |
1059 | ||
694cc208 TJ |
1060 | return; |
1061 | ||
185c9bcf ML |
1062 | file_error: |
1063 | debugfs_remove_recursive(ehci->debug_dir); | |
694cc208 TJ |
1064 | } |
1065 | ||
668ab0db | 1066 | static inline void remove_debug_files(struct ehci_hcd *ehci) |
694cc208 | 1067 | { |
185c9bcf | 1068 | debugfs_remove_recursive(ehci->debug_dir); |
694cc208 TJ |
1069 | } |
1070 | ||
128f8b3d AS |
1071 | #else /* CONFIG_DYNAMIC_DEBUG */ |
1072 | ||
1073 | static inline void dbg_hcs_params(struct ehci_hcd *ehci, char *label) { } | |
1074 | static inline void dbg_hcc_params(struct ehci_hcd *ehci, char *label) { } | |
1075 | ||
1076 | static inline void __maybe_unused dbg_qh(const char *label, | |
1077 | struct ehci_hcd *ehci, struct ehci_qh *qh) { } | |
1078 | ||
1079 | static inline int __maybe_unused dbg_status_buf(const char *buf, | |
1080 | unsigned int len, const char *label, u32 status) | |
1081 | { return 0; } | |
1082 | ||
1083 | static inline int __maybe_unused dbg_command_buf(const char *buf, | |
1084 | unsigned int len, const char *label, u32 command) | |
1085 | { return 0; } | |
1086 | ||
1087 | static inline int __maybe_unused dbg_intr_buf(const char *buf, | |
1088 | unsigned int len, const char *label, u32 enable) | |
1089 | { return 0; } | |
1090 | ||
1091 | static inline int __maybe_unused dbg_port_buf(char *buf, | |
1092 | unsigned int len, const char *label, int port, u32 status) | |
1093 | { return 0; } | |
1094 | ||
1095 | static inline void dbg_status(struct ehci_hcd *ehci, const char *label, | |
1096 | u32 status) { } | |
1097 | static inline void dbg_cmd(struct ehci_hcd *ehci, const char *label, | |
1098 | u32 command) { } | |
1099 | static inline void dbg_port(struct ehci_hcd *ehci, const char *label, | |
1100 | int port, u32 status) { } | |
1101 | ||
1102 | static inline void create_debug_files(struct ehci_hcd *bus) { } | |
1103 | static inline void remove_debug_files(struct ehci_hcd *bus) { } | |
1104 | ||
93df42ba | 1105 | #endif /* CONFIG_DYNAMIC_DEBUG */ |