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Commit | Line | Data |
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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0+ |
1da177e4 LT |
2 | /* |
3 | * Copyright (c) 2001-2002 by David Brownell | |
1da177e4 LT |
4 | */ |
5 | ||
6 | /* this file is part of ehci-hcd.c */ | |
7 | ||
1c20163d | 8 | #ifdef CONFIG_DYNAMIC_DEBUG |
1da177e4 | 9 | |
0784b4d5 GB |
10 | /* |
11 | * check the values in the HCSPARAMS register | |
1da177e4 LT |
12 | * (host controller _Structural_ parameters) |
13 | * see EHCI spec, Table 2-4 for each value | |
14 | */ | |
668ab0db | 15 | static void dbg_hcs_params(struct ehci_hcd *ehci, char *label) |
1da177e4 | 16 | { |
083522d7 | 17 | u32 params = ehci_readl(ehci, &ehci->caps->hcs_params); |
1da177e4 | 18 | |
668ab0db | 19 | ehci_dbg(ehci, |
1da177e4 LT |
20 | "%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n", |
21 | label, params, | |
668ab0db GB |
22 | HCS_DEBUG_PORT(params), |
23 | HCS_INDICATOR(params) ? " ind" : "", | |
24 | HCS_N_CC(params), | |
25 | HCS_N_PCC(params), | |
26 | HCS_PORTROUTED(params) ? "" : " ordered", | |
27 | HCS_PPC(params) ? "" : " !ppc", | |
78698d66 | 28 | HCS_N_PORTS(params)); |
1da177e4 | 29 | /* Port routing, per EHCI 0.95 Spec, Section 2.2.5 */ |
668ab0db | 30 | if (HCS_PORTROUTED(params)) { |
1da177e4 | 31 | int i; |
1cb1d1c0 | 32 | char buf[46], tmp[7], byte; |
1da177e4 LT |
33 | |
34 | buf[0] = 0; | |
668ab0db | 35 | for (i = 0; i < HCS_N_PORTS(params); i++) { |
0784b4d5 | 36 | /* FIXME MIPS won't readb() ... */ |
668ab0db | 37 | byte = readb(&ehci->caps->portroute[(i >> 1)]); |
53bd6a60 | 38 | sprintf(tmp, "%d ", |
c2fb0171 | 39 | (i & 0x1) ? byte & 0xf : (byte >> 4) & 0xf); |
1da177e4 LT |
40 | strcat(buf, tmp); |
41 | } | |
668ab0db | 42 | ehci_dbg(ehci, "%s portroute %s\n", label, buf); |
1da177e4 LT |
43 | } |
44 | } | |
1da177e4 | 45 | |
0784b4d5 GB |
46 | /* |
47 | * check the values in the HCCPARAMS register | |
1da177e4 LT |
48 | * (host controller _Capability_ parameters) |
49 | * see EHCI Spec, Table 2-5 for each value | |
0784b4d5 | 50 | */ |
668ab0db | 51 | static void dbg_hcc_params(struct ehci_hcd *ehci, char *label) |
1da177e4 | 52 | { |
083522d7 | 53 | u32 params = ehci_readl(ehci, &ehci->caps->hcc_params); |
1da177e4 | 54 | |
668ab0db GB |
55 | if (HCC_ISOC_CACHE(params)) { |
56 | ehci_dbg(ehci, | |
6dbd682b SR |
57 | "%s hcc_params %04x caching frame %s%s%s\n", |
58 | label, params, | |
59 | HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", | |
60 | HCC_CANPARK(params) ? " park" : "", | |
61 | HCC_64BIT_ADDR(params) ? " 64 bit addr" : ""); | |
1da177e4 | 62 | } else { |
668ab0db | 63 | ehci_dbg(ehci, |
aa4d8342 | 64 | "%s hcc_params %04x thresh %d uframes %s%s%s%s%s%s%s\n", |
6dbd682b SR |
65 | label, |
66 | params, | |
67 | HCC_ISOC_THRES(params), | |
68 | HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024", | |
69 | HCC_CANPARK(params) ? " park" : "", | |
aa4d8342 AD |
70 | HCC_64BIT_ADDR(params) ? " 64 bit addr" : "", |
71 | HCC_LPM(params) ? " LPM" : "", | |
72 | HCC_PER_PORT_CHANGE_EVENT(params) ? " ppce" : "", | |
73 | HCC_HW_PREFETCH(params) ? " hw prefetch" : "", | |
74 | HCC_32FRAME_PERIODIC_LIST(params) ? | |
855ef452 | 75 | " 32 periodic list" : ""); |
1da177e4 LT |
76 | } |
77 | } | |
1da177e4 | 78 | |
8234509c | 79 | static void __maybe_unused |
668ab0db | 80 | dbg_qtd(const char *label, struct ehci_hcd *ehci, struct ehci_qtd *qtd) |
1da177e4 | 81 | { |
6dbd682b SR |
82 | ehci_dbg(ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd, |
83 | hc32_to_cpup(ehci, &qtd->hw_next), | |
84 | hc32_to_cpup(ehci, &qtd->hw_alt_next), | |
85 | hc32_to_cpup(ehci, &qtd->hw_token), | |
1cb1d1c0 GB |
86 | hc32_to_cpup(ehci, &qtd->hw_buf[0])); |
87 | if (qtd->hw_buf[1]) | |
6dbd682b SR |
88 | ehci_dbg(ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n", |
89 | hc32_to_cpup(ehci, &qtd->hw_buf[1]), | |
90 | hc32_to_cpup(ehci, &qtd->hw_buf[2]), | |
91 | hc32_to_cpup(ehci, &qtd->hw_buf[3]), | |
92 | hc32_to_cpup(ehci, &qtd->hw_buf[4])); | |
1da177e4 LT |
93 | } |
94 | ||
8234509c | 95 | static void __maybe_unused |
668ab0db | 96 | dbg_qh(const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) |
1da177e4 | 97 | { |
3807e26d AD |
98 | struct ehci_qh_hw *hw = qh->hw; |
99 | ||
668ab0db | 100 | ehci_dbg(ehci, "%s qh %p n%08x info %x %x qtd %x\n", label, |
3807e26d AD |
101 | qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current); |
102 | dbg_qtd("overlay", ehci, (struct ehci_qtd *) &hw->hw_qtd_next); | |
1da177e4 LT |
103 | } |
104 | ||
8234509c | 105 | static void __maybe_unused |
668ab0db | 106 | dbg_itd(const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd) |
1da177e4 | 107 | { |
668ab0db | 108 | ehci_dbg(ehci, "%s [%d] itd %p, next %08x, urb %p\n", |
6dbd682b SR |
109 | label, itd->frame, itd, hc32_to_cpu(ehci, itd->hw_next), |
110 | itd->urb); | |
668ab0db | 111 | ehci_dbg(ehci, |
53bd6a60 | 112 | " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n", |
6dbd682b SR |
113 | hc32_to_cpu(ehci, itd->hw_transaction[0]), |
114 | hc32_to_cpu(ehci, itd->hw_transaction[1]), | |
115 | hc32_to_cpu(ehci, itd->hw_transaction[2]), | |
116 | hc32_to_cpu(ehci, itd->hw_transaction[3]), | |
117 | hc32_to_cpu(ehci, itd->hw_transaction[4]), | |
118 | hc32_to_cpu(ehci, itd->hw_transaction[5]), | |
119 | hc32_to_cpu(ehci, itd->hw_transaction[6]), | |
120 | hc32_to_cpu(ehci, itd->hw_transaction[7])); | |
668ab0db | 121 | ehci_dbg(ehci, |
53bd6a60 | 122 | " buf: %08x %08x %08x %08x %08x %08x %08x\n", |
6dbd682b SR |
123 | hc32_to_cpu(ehci, itd->hw_bufp[0]), |
124 | hc32_to_cpu(ehci, itd->hw_bufp[1]), | |
125 | hc32_to_cpu(ehci, itd->hw_bufp[2]), | |
126 | hc32_to_cpu(ehci, itd->hw_bufp[3]), | |
127 | hc32_to_cpu(ehci, itd->hw_bufp[4]), | |
128 | hc32_to_cpu(ehci, itd->hw_bufp[5]), | |
129 | hc32_to_cpu(ehci, itd->hw_bufp[6])); | |
668ab0db | 130 | ehci_dbg(ehci, " index: %d %d %d %d %d %d %d %d\n", |
1da177e4 LT |
131 | itd->index[0], itd->index[1], itd->index[2], |
132 | itd->index[3], itd->index[4], itd->index[5], | |
133 | itd->index[6], itd->index[7]); | |
134 | } | |
135 | ||
8234509c | 136 | static void __maybe_unused |
668ab0db | 137 | dbg_sitd(const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd) |
1da177e4 | 138 | { |
668ab0db | 139 | ehci_dbg(ehci, "%s [%d] sitd %p, next %08x, urb %p\n", |
6dbd682b SR |
140 | label, sitd->frame, sitd, hc32_to_cpu(ehci, sitd->hw_next), |
141 | sitd->urb); | |
668ab0db | 142 | ehci_dbg(ehci, |
53bd6a60 | 143 | " addr %08x sched %04x result %08x buf %08x %08x\n", |
6dbd682b SR |
144 | hc32_to_cpu(ehci, sitd->hw_fullspeed_ep), |
145 | hc32_to_cpu(ehci, sitd->hw_uframe), | |
146 | hc32_to_cpu(ehci, sitd->hw_results), | |
147 | hc32_to_cpu(ehci, sitd->hw_buf[0]), | |
148 | hc32_to_cpu(ehci, sitd->hw_buf[1])); | |
1da177e4 LT |
149 | } |
150 | ||
8234509c | 151 | static int __maybe_unused |
668ab0db | 152 | dbg_status_buf(char *buf, unsigned len, const char *label, u32 status) |
1da177e4 | 153 | { |
668ab0db | 154 | return scnprintf(buf, len, |
aa4d8342 | 155 | "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s%s", |
1cb1d1c0 | 156 | label, label[0] ? " " : "", status, |
aa4d8342 | 157 | (status & STS_PPCE_MASK) ? " PPCE" : "", |
1da177e4 LT |
158 | (status & STS_ASS) ? " Async" : "", |
159 | (status & STS_PSS) ? " Periodic" : "", | |
160 | (status & STS_RECL) ? " Recl" : "", | |
161 | (status & STS_HALT) ? " Halt" : "", | |
162 | (status & STS_IAA) ? " IAA" : "", | |
163 | (status & STS_FATAL) ? " FATAL" : "", | |
164 | (status & STS_FLR) ? " FLR" : "", | |
165 | (status & STS_PCD) ? " PCD" : "", | |
166 | (status & STS_ERR) ? " ERR" : "", | |
78698d66 | 167 | (status & STS_INT) ? " INT" : ""); |
1da177e4 LT |
168 | } |
169 | ||
8234509c | 170 | static int __maybe_unused |
668ab0db | 171 | dbg_intr_buf(char *buf, unsigned len, const char *label, u32 enable) |
1da177e4 | 172 | { |
668ab0db | 173 | return scnprintf(buf, len, |
aa4d8342 | 174 | "%s%sintrenable %02x%s%s%s%s%s%s%s", |
1cb1d1c0 | 175 | label, label[0] ? " " : "", enable, |
aa4d8342 | 176 | (enable & STS_PPCE_MASK) ? " PPCE" : "", |
1da177e4 LT |
177 | (enable & STS_IAA) ? " IAA" : "", |
178 | (enable & STS_FATAL) ? " FATAL" : "", | |
179 | (enable & STS_FLR) ? " FLR" : "", | |
180 | (enable & STS_PCD) ? " PCD" : "", | |
181 | (enable & STS_ERR) ? " ERR" : "", | |
78698d66 | 182 | (enable & STS_INT) ? " INT" : ""); |
1da177e4 LT |
183 | } |
184 | ||
1cb1d1c0 | 185 | static const char *const fls_strings[] = { "1024", "512", "256", "??" }; |
1da177e4 LT |
186 | |
187 | static int | |
668ab0db | 188 | dbg_command_buf(char *buf, unsigned len, const char *label, u32 command) |
1da177e4 | 189 | { |
668ab0db | 190 | return scnprintf(buf, len, |
aa4d8342 AD |
191 | "%s%scommand %07x %s%s%s%s%s%s=%d ithresh=%d%s%s%s%s " |
192 | "period=%s%s %s", | |
1cb1d1c0 | 193 | label, label[0] ? " " : "", command, |
aa4d8342 AD |
194 | (command & CMD_HIRD) ? " HIRD" : "", |
195 | (command & CMD_PPCEE) ? " PPCEE" : "", | |
196 | (command & CMD_FSP) ? " FSP" : "", | |
197 | (command & CMD_ASPE) ? " ASPE" : "", | |
198 | (command & CMD_PSPE) ? " PSPE" : "", | |
199 | (command & CMD_PARK) ? " park" : "(park)", | |
668ab0db | 200 | CMD_PARK_CNT(command), |
1da177e4 LT |
201 | (command >> 16) & 0x3f, |
202 | (command & CMD_LRESET) ? " LReset" : "", | |
203 | (command & CMD_IAAD) ? " IAAD" : "", | |
204 | (command & CMD_ASE) ? " Async" : "", | |
205 | (command & CMD_PSE) ? " Periodic" : "", | |
1cb1d1c0 | 206 | fls_strings[(command >> 2) & 0x3], |
1da177e4 | 207 | (command & CMD_RESET) ? " Reset" : "", |
78698d66 | 208 | (command & CMD_RUN) ? "RUN" : "HALT"); |
1da177e4 LT |
209 | } |
210 | ||
211 | static int | |
668ab0db | 212 | dbg_port_buf(char *buf, unsigned len, const char *label, int port, u32 status) |
1da177e4 LT |
213 | { |
214 | char *sig; | |
215 | ||
216 | /* signaling state */ | |
217 | switch (status & (3 << 10)) { | |
5bb95ec8 GB |
218 | case 0 << 10: |
219 | sig = "se0"; | |
220 | break; | |
221 | case 1 << 10: /* low speed */ | |
222 | sig = "k"; | |
223 | break; | |
224 | case 2 << 10: | |
225 | sig = "j"; | |
226 | break; | |
227 | default: | |
228 | sig = "?"; | |
229 | break; | |
1da177e4 LT |
230 | } |
231 | ||
668ab0db | 232 | return scnprintf(buf, len, |
aa4d8342 AD |
233 | "%s%sport:%d status %06x %d %s%s%s%s%s%s " |
234 | "sig=%s%s%s%s%s%s%s%s%s%s%s", | |
1cb1d1c0 | 235 | label, label[0] ? " " : "", port, status, |
c2fb0171 GB |
236 | status >> 25, /*device address */ |
237 | (status & PORT_SSTS) >> 23 == PORTSC_SUSPEND_STS_ACK ? | |
aa4d8342 | 238 | " ACK" : "", |
c2fb0171 | 239 | (status & PORT_SSTS) >> 23 == PORTSC_SUSPEND_STS_NYET ? |
aa4d8342 | 240 | " NYET" : "", |
c2fb0171 | 241 | (status & PORT_SSTS) >> 23 == PORTSC_SUSPEND_STS_STALL ? |
aa4d8342 | 242 | " STALL" : "", |
c2fb0171 | 243 | (status & PORT_SSTS) >> 23 == PORTSC_SUSPEND_STS_ERR ? |
aa4d8342 | 244 | " ERR" : "", |
1da177e4 LT |
245 | (status & PORT_POWER) ? " POWER" : "", |
246 | (status & PORT_OWNER) ? " OWNER" : "", | |
247 | sig, | |
aa4d8342 | 248 | (status & PORT_LPM) ? " LPM" : "", |
1da177e4 LT |
249 | (status & PORT_RESET) ? " RESET" : "", |
250 | (status & PORT_SUSPEND) ? " SUSPEND" : "", | |
251 | (status & PORT_RESUME) ? " RESUME" : "", | |
252 | (status & PORT_OCC) ? " OCC" : "", | |
253 | (status & PORT_OC) ? " OC" : "", | |
254 | (status & PORT_PEC) ? " PEC" : "", | |
255 | (status & PORT_PE) ? " PE" : "", | |
256 | (status & PORT_CSC) ? " CSC" : "", | |
6dbd682b | 257 | (status & PORT_CONNECT) ? " CONNECT" : ""); |
1da177e4 LT |
258 | } |
259 | ||
1f8e5afd GB |
260 | static inline void |
261 | dbg_status(struct ehci_hcd *ehci, const char *label, u32 status) | |
262 | { | |
263 | char buf[80]; | |
264 | ||
265 | dbg_status_buf(buf, sizeof(buf), label, status); | |
266 | ehci_dbg(ehci, "%s\n", buf); | |
1da177e4 LT |
267 | } |
268 | ||
1f8e5afd GB |
269 | static inline void |
270 | dbg_cmd(struct ehci_hcd *ehci, const char *label, u32 command) | |
271 | { | |
272 | char buf[80]; | |
273 | ||
274 | dbg_command_buf(buf, sizeof(buf), label, command); | |
275 | ehci_dbg(ehci, "%s\n", buf); | |
1da177e4 LT |
276 | } |
277 | ||
1f8e5afd GB |
278 | static inline void |
279 | dbg_port(struct ehci_hcd *ehci, const char *label, int port, u32 status) | |
280 | { | |
281 | char buf[80]; | |
282 | ||
283 | dbg_port_buf(buf, sizeof(buf), label, port, status); | |
284 | ehci_dbg(ehci, "%s\n", buf); | |
1da177e4 LT |
285 | } |
286 | ||
287 | /*-------------------------------------------------------------------------*/ | |
288 | ||
694cc208 TJ |
289 | /* troubleshooting help: expose state in debugfs */ |
290 | ||
291 | static int debug_async_open(struct inode *, struct file *); | |
d0ce5c6b | 292 | static int debug_bandwidth_open(struct inode *, struct file *); |
694cc208 TJ |
293 | static int debug_periodic_open(struct inode *, struct file *); |
294 | static int debug_registers_open(struct inode *, struct file *); | |
aa4d8342 | 295 | |
694cc208 TJ |
296 | static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); |
297 | static int debug_close(struct inode *, struct file *); | |
298 | ||
299 | static const struct file_operations debug_async_fops = { | |
300 | .owner = THIS_MODULE, | |
301 | .open = debug_async_open, | |
302 | .read = debug_output, | |
303 | .release = debug_close, | |
6038f373 | 304 | .llseek = default_llseek, |
694cc208 | 305 | }; |
e1666317 | 306 | |
d0ce5c6b AS |
307 | static const struct file_operations debug_bandwidth_fops = { |
308 | .owner = THIS_MODULE, | |
309 | .open = debug_bandwidth_open, | |
310 | .read = debug_output, | |
311 | .release = debug_close, | |
312 | .llseek = default_llseek, | |
313 | }; | |
e1666317 | 314 | |
694cc208 TJ |
315 | static const struct file_operations debug_periodic_fops = { |
316 | .owner = THIS_MODULE, | |
317 | .open = debug_periodic_open, | |
318 | .read = debug_output, | |
319 | .release = debug_close, | |
6038f373 | 320 | .llseek = default_llseek, |
694cc208 | 321 | }; |
e1666317 | 322 | |
694cc208 TJ |
323 | static const struct file_operations debug_registers_fops = { |
324 | .owner = THIS_MODULE, | |
325 | .open = debug_registers_open, | |
326 | .read = debug_output, | |
327 | .release = debug_close, | |
6038f373 | 328 | .llseek = default_llseek, |
694cc208 TJ |
329 | }; |
330 | ||
331 | static struct dentry *ehci_debug_root; | |
332 | ||
333 | struct debug_buffer { | |
334 | ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ | |
335 | struct usb_bus *bus; | |
336 | struct mutex mutex; /* protect filling of buffer */ | |
337 | size_t count; /* number of characters filled into buffer */ | |
3c04e20e ML |
338 | char *output_buf; |
339 | size_t alloc_size; | |
694cc208 | 340 | }; |
1da177e4 | 341 | |
1f8e5afd GB |
342 | static inline char speed_char(u32 info1) |
343 | { | |
344 | switch (info1 & (3 << 12)) { | |
345 | case QH_FULL_SPEED: | |
346 | return 'f'; | |
347 | case QH_LOW_SPEED: | |
348 | return 'l'; | |
349 | case QH_HIGH_SPEED: | |
350 | return 'h'; | |
351 | default: | |
352 | return '?'; | |
353 | } | |
354 | } | |
1da177e4 | 355 | |
6dbd682b | 356 | static inline char token_mark(struct ehci_hcd *ehci, __hc32 token) |
1da177e4 | 357 | { |
6dbd682b SR |
358 | __u32 v = hc32_to_cpu(ehci, token); |
359 | ||
1da177e4 LT |
360 | if (v & QTD_STS_ACTIVE) |
361 | return '*'; | |
362 | if (v & QTD_STS_HALT) | |
363 | return '-'; | |
668ab0db | 364 | if (!IS_SHORT_READ(v)) |
1da177e4 LT |
365 | return ' '; |
366 | /* tries to advance through hw_alt_next */ | |
367 | return '/'; | |
368 | } | |
369 | ||
c768ffb8 GB |
370 | static void qh_lines(struct ehci_hcd *ehci, struct ehci_qh *qh, |
371 | char **nextp, unsigned *sizep) | |
1da177e4 LT |
372 | { |
373 | u32 scratch; | |
374 | u32 hw_curr; | |
375 | struct list_head *entry; | |
376 | struct ehci_qtd *td; | |
377 | unsigned temp; | |
378 | unsigned size = *sizep; | |
379 | char *next = *nextp; | |
380 | char mark; | |
fd05e720 | 381 | __le32 list_end = EHCI_LIST_END(ehci); |
3807e26d | 382 | struct ehci_qh_hw *hw = qh->hw; |
1da177e4 | 383 | |
3807e26d | 384 | if (hw->hw_qtd_next == list_end) /* NEC does this */ |
1da177e4 LT |
385 | mark = '@'; |
386 | else | |
3807e26d | 387 | mark = token_mark(ehci, hw->hw_token); |
1da177e4 | 388 | if (mark == '/') { /* qh_alt_next controls qh advance? */ |
3807e26d AD |
389 | if ((hw->hw_alt_next & QTD_MASK(ehci)) |
390 | == ehci->async->hw->hw_alt_next) | |
1da177e4 | 391 | mark = '#'; /* blocked */ |
3807e26d | 392 | else if (hw->hw_alt_next == list_end) |
1da177e4 LT |
393 | mark = '.'; /* use hw_qtd_next */ |
394 | /* else alt_next points to some other qtd */ | |
395 | } | |
3807e26d AD |
396 | scratch = hc32_to_cpup(ehci, &hw->hw_info1); |
397 | hw_curr = (mark == '*') ? hc32_to_cpup(ehci, &hw->hw_current) : 0; | |
668ab0db | 398 | temp = scnprintf(next, size, |
8ee10d62 AS |
399 | "qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)" |
400 | " [cur %08x next %08x buf[0] %08x]", | |
1da177e4 LT |
401 | qh, scratch & 0x007f, |
402 | speed_char (scratch), | |
403 | (scratch >> 8) & 0x000f, | |
3807e26d AD |
404 | scratch, hc32_to_cpup(ehci, &hw->hw_info2), |
405 | hc32_to_cpup(ehci, &hw->hw_token), mark, | |
406 | (cpu_to_hc32(ehci, QTD_TOGGLE) & hw->hw_token) | |
1da177e4 | 407 | ? "data1" : "data0", |
8ee10d62 AS |
408 | (hc32_to_cpup(ehci, &hw->hw_alt_next) >> 1) & 0x0f, |
409 | hc32_to_cpup(ehci, &hw->hw_current), | |
410 | hc32_to_cpup(ehci, &hw->hw_qtd_next), | |
411 | hc32_to_cpup(ehci, &hw->hw_buf[0])); | |
1da177e4 LT |
412 | size -= temp; |
413 | next += temp; | |
414 | ||
415 | /* hc may be modifying the list as we read it ... */ | |
668ab0db | 416 | list_for_each(entry, &qh->qtd_list) { |
5bb95ec8 GB |
417 | char *type; |
418 | ||
668ab0db | 419 | td = list_entry(entry, struct ehci_qtd, qtd_list); |
6dbd682b | 420 | scratch = hc32_to_cpup(ehci, &td->hw_token); |
1da177e4 | 421 | mark = ' '; |
04b8ad43 | 422 | if (hw_curr == td->qtd_dma) { |
1da177e4 | 423 | mark = '*'; |
04b8ad43 | 424 | } else if (hw->hw_qtd_next == cpu_to_hc32(ehci, td->qtd_dma)) { |
1da177e4 | 425 | mark = '+'; |
04b8ad43 | 426 | } else if (QTD_LENGTH(scratch)) { |
3807e26d | 427 | if (td->hw_alt_next == ehci->async->hw->hw_alt_next) |
1da177e4 | 428 | mark = '#'; |
6dbd682b | 429 | else if (td->hw_alt_next != list_end) |
1da177e4 LT |
430 | mark = '/'; |
431 | } | |
5bb95ec8 GB |
432 | switch ((scratch >> 8) & 0x03) { |
433 | case 0: | |
434 | type = "out"; | |
435 | break; | |
436 | case 1: | |
437 | type = "in"; | |
438 | break; | |
439 | case 2: | |
440 | type = "setup"; | |
441 | break; | |
442 | default: | |
443 | type = "?"; | |
444 | break; | |
445 | } | |
a5355977 | 446 | temp = scnprintf(next, size, |
8ee10d62 AS |
447 | "\n\t%p%c%s len=%d %08x urb %p" |
448 | " [td %08x buf[0] %08x]", | |
5bb95ec8 | 449 | td, mark, type, |
1da177e4 LT |
450 | (scratch >> 16) & 0x7fff, |
451 | scratch, | |
8ee10d62 AS |
452 | td->urb, |
453 | (u32) td->qtd_dma, | |
454 | hc32_to_cpup(ehci, &td->hw_buf[0])); | |
1da177e4 LT |
455 | size -= temp; |
456 | next += temp; | |
457 | if (temp == size) | |
458 | goto done; | |
459 | } | |
460 | ||
a5355977 | 461 | temp = scnprintf(next, size, "\n"); |
1da177e4 LT |
462 | size -= temp; |
463 | next += temp; | |
464 | ||
465 | done: | |
466 | *sizep = size; | |
467 | *nextp = next; | |
468 | } | |
469 | ||
694cc208 | 470 | static ssize_t fill_async_buffer(struct debug_buffer *buf) |
1da177e4 | 471 | { |
1da177e4 LT |
472 | struct usb_hcd *hcd; |
473 | struct ehci_hcd *ehci; | |
474 | unsigned long flags; | |
475 | unsigned temp, size; | |
476 | char *next; | |
477 | struct ehci_qh *qh; | |
478 | ||
694cc208 | 479 | hcd = bus_to_hcd(buf->bus); |
668ab0db | 480 | ehci = hcd_to_ehci(hcd); |
3c04e20e ML |
481 | next = buf->output_buf; |
482 | size = buf->alloc_size; | |
1da177e4 | 483 | |
694cc208 TJ |
484 | *next = 0; |
485 | ||
0784b4d5 GB |
486 | /* |
487 | * dumps a snapshot of the async schedule. | |
1da177e4 LT |
488 | * usually empty except for long-term bulk reads, or head. |
489 | * one QH per line, and TDs we know about | |
490 | */ | |
668ab0db | 491 | spin_lock_irqsave(&ehci->lock, flags); |
1da177e4 | 492 | for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh) |
668ab0db | 493 | qh_lines(ehci, qh, &next, &size); |
6e018751 | 494 | if (!list_empty(&ehci->async_unlink) && size > 0) { |
99ac5b1e | 495 | temp = scnprintf(next, size, "\nunlink =\n"); |
1da177e4 LT |
496 | size -= temp; |
497 | next += temp; | |
498 | ||
6e018751 AS |
499 | list_for_each_entry(qh, &ehci->async_unlink, unlink_node) { |
500 | if (size <= 0) | |
501 | break; | |
502 | qh_lines(ehci, qh, &next, &size); | |
503 | } | |
1da177e4 | 504 | } |
668ab0db | 505 | spin_unlock_irqrestore(&ehci->lock, flags); |
1da177e4 | 506 | |
3c04e20e | 507 | return strlen(buf->output_buf); |
1da177e4 | 508 | } |
1da177e4 | 509 | |
d0ce5c6b AS |
510 | static ssize_t fill_bandwidth_buffer(struct debug_buffer *buf) |
511 | { | |
512 | struct ehci_hcd *ehci; | |
b35c5009 AS |
513 | struct ehci_tt *tt; |
514 | struct ehci_per_sched *ps; | |
d0ce5c6b AS |
515 | unsigned temp, size; |
516 | char *next; | |
517 | unsigned i; | |
518 | u8 *bw; | |
b35c5009 AS |
519 | u16 *bf; |
520 | u8 budget[EHCI_BANDWIDTH_SIZE]; | |
d0ce5c6b AS |
521 | |
522 | ehci = hcd_to_ehci(bus_to_hcd(buf->bus)); | |
523 | next = buf->output_buf; | |
524 | size = buf->alloc_size; | |
525 | ||
526 | *next = 0; | |
527 | ||
528 | spin_lock_irq(&ehci->lock); | |
529 | ||
530 | /* Dump the HS bandwidth table */ | |
531 | temp = scnprintf(next, size, | |
532 | "HS bandwidth allocation (us per microframe)\n"); | |
533 | size -= temp; | |
534 | next += temp; | |
535 | for (i = 0; i < EHCI_BANDWIDTH_SIZE; i += 8) { | |
536 | bw = &ehci->bandwidth[i]; | |
537 | temp = scnprintf(next, size, | |
538 | "%2u: %4u%4u%4u%4u%4u%4u%4u%4u\n", | |
539 | i, bw[0], bw[1], bw[2], bw[3], | |
540 | bw[4], bw[5], bw[6], bw[7]); | |
541 | size -= temp; | |
542 | next += temp; | |
543 | } | |
b35c5009 AS |
544 | |
545 | /* Dump all the FS/LS tables */ | |
546 | list_for_each_entry(tt, &ehci->tt_list, tt_list) { | |
547 | temp = scnprintf(next, size, | |
548 | "\nTT %s port %d FS/LS bandwidth allocation (us per frame)\n", | |
549 | dev_name(&tt->usb_tt->hub->dev), | |
550 | tt->tt_port + !!tt->usb_tt->multi); | |
551 | size -= temp; | |
552 | next += temp; | |
553 | ||
554 | bf = tt->bandwidth; | |
555 | temp = scnprintf(next, size, | |
556 | " %5u%5u%5u%5u%5u%5u%5u%5u\n", | |
557 | bf[0], bf[1], bf[2], bf[3], | |
558 | bf[4], bf[5], bf[6], bf[7]); | |
559 | size -= temp; | |
560 | next += temp; | |
561 | ||
562 | temp = scnprintf(next, size, | |
563 | "FS/LS budget (us per microframe)\n"); | |
564 | size -= temp; | |
565 | next += temp; | |
566 | compute_tt_budget(budget, tt); | |
567 | for (i = 0; i < EHCI_BANDWIDTH_SIZE; i += 8) { | |
568 | bw = &budget[i]; | |
569 | temp = scnprintf(next, size, | |
570 | "%2u: %4u%4u%4u%4u%4u%4u%4u%4u\n", | |
571 | i, bw[0], bw[1], bw[2], bw[3], | |
572 | bw[4], bw[5], bw[6], bw[7]); | |
573 | size -= temp; | |
574 | next += temp; | |
575 | } | |
576 | list_for_each_entry(ps, &tt->ps_list, ps_list) { | |
577 | temp = scnprintf(next, size, | |
578 | "%s ep %02x: %4u @ %2u.%u+%u mask %04x\n", | |
579 | dev_name(&ps->udev->dev), | |
580 | ps->ep->desc.bEndpointAddress, | |
581 | ps->tt_usecs, | |
582 | ps->bw_phase, ps->phase_uf, | |
583 | ps->bw_period, ps->cs_mask); | |
584 | size -= temp; | |
585 | next += temp; | |
586 | } | |
587 | } | |
d0ce5c6b AS |
588 | spin_unlock_irq(&ehci->lock); |
589 | ||
590 | return next - buf->output_buf; | |
591 | } | |
592 | ||
3fd29009 GB |
593 | static unsigned output_buf_tds_dir(char *buf, struct ehci_hcd *ehci, |
594 | struct ehci_qh_hw *hw, struct ehci_qh *qh, unsigned size) | |
595 | { | |
596 | u32 scratch = hc32_to_cpup(ehci, &hw->hw_info1); | |
597 | struct ehci_qtd *qtd; | |
598 | char *type = ""; | |
599 | unsigned temp = 0; | |
600 | ||
601 | /* count tds, get ep direction */ | |
602 | list_for_each_entry(qtd, &qh->qtd_list, qtd_list) { | |
603 | temp++; | |
604 | switch ((hc32_to_cpu(ehci, qtd->hw_token) >> 8) & 0x03) { | |
605 | case 0: | |
606 | type = "out"; | |
607 | continue; | |
608 | case 1: | |
609 | type = "in"; | |
610 | continue; | |
611 | } | |
612 | } | |
613 | ||
614 | return scnprintf(buf, size, " (%c%d ep%d%s [%d/%d] q%d p%d)", | |
615 | speed_char(scratch), scratch & 0x007f, | |
616 | (scratch >> 8) & 0x000f, type, qh->ps.usecs, | |
617 | qh->ps.c_usecs, temp, 0x7ff & (scratch >> 16)); | |
618 | } | |
619 | ||
1da177e4 | 620 | #define DBG_SCHED_LIMIT 64 |
694cc208 | 621 | static ssize_t fill_periodic_buffer(struct debug_buffer *buf) |
1da177e4 | 622 | { |
1da177e4 LT |
623 | struct usb_hcd *hcd; |
624 | struct ehci_hcd *ehci; | |
625 | unsigned long flags; | |
626 | union ehci_shadow p, *seen; | |
627 | unsigned temp, size, seen_count; | |
628 | char *next; | |
629 | unsigned i; | |
6dbd682b | 630 | __hc32 tag; |
1da177e4 | 631 | |
cb272521 | 632 | seen = kmalloc_array(DBG_SCHED_LIMIT, sizeof(*seen), GFP_ATOMIC); |
911fdb6e | 633 | if (!seen) |
1da177e4 LT |
634 | return 0; |
635 | seen_count = 0; | |
636 | ||
694cc208 | 637 | hcd = bus_to_hcd(buf->bus); |
668ab0db | 638 | ehci = hcd_to_ehci(hcd); |
3c04e20e ML |
639 | next = buf->output_buf; |
640 | size = buf->alloc_size; | |
1da177e4 | 641 | |
668ab0db | 642 | temp = scnprintf(next, size, "size = %d\n", ehci->periodic_size); |
1da177e4 LT |
643 | size -= temp; |
644 | next += temp; | |
645 | ||
0784b4d5 GB |
646 | /* |
647 | * dump a snapshot of the periodic schedule. | |
1da177e4 LT |
648 | * iso changes, interrupt usually doesn't. |
649 | */ | |
668ab0db | 650 | spin_lock_irqsave(&ehci->lock, flags); |
1da177e4 | 651 | for (i = 0; i < ehci->periodic_size; i++) { |
1cb1d1c0 | 652 | p = ehci->pshadow[i]; |
668ab0db | 653 | if (likely(!p.ptr)) |
1da177e4 | 654 | continue; |
1cb1d1c0 | 655 | tag = Q_NEXT_TYPE(ehci, ehci->periodic[i]); |
1da177e4 | 656 | |
668ab0db | 657 | temp = scnprintf(next, size, "%4d: ", i); |
1da177e4 LT |
658 | size -= temp; |
659 | next += temp; | |
660 | ||
661 | do { | |
3807e26d AD |
662 | struct ehci_qh_hw *hw; |
663 | ||
6dbd682b | 664 | switch (hc32_to_cpu(ehci, tag)) { |
1da177e4 | 665 | case Q_TYPE_QH: |
3807e26d | 666 | hw = p.qh->hw; |
668ab0db | 667 | temp = scnprintf(next, size, " qh%d-%04x/%p", |
ffa0248e | 668 | p.qh->ps.period, |
6dbd682b | 669 | hc32_to_cpup(ehci, |
3807e26d | 670 | &hw->hw_info2) |
1da177e4 | 671 | /* uframe masks */ |
7dedacf4 | 672 | & (QH_CMASK | QH_SMASK), |
1da177e4 LT |
673 | p.qh); |
674 | size -= temp; | |
675 | next += temp; | |
676 | /* don't repeat what follows this qh */ | |
677 | for (temp = 0; temp < seen_count; temp++) { | |
1cb1d1c0 | 678 | if (seen[temp].ptr != p.ptr) |
1da177e4 | 679 | continue; |
3c4bb71f | 680 | if (p.qh->qh_next.ptr) { |
668ab0db | 681 | temp = scnprintf(next, size, |
1da177e4 | 682 | " ..."); |
3c4bb71f ML |
683 | size -= temp; |
684 | next += temp; | |
685 | } | |
1da177e4 LT |
686 | break; |
687 | } | |
688 | /* show more info the first time around */ | |
3c4bb71f | 689 | if (temp == seen_count) { |
3fd29009 GB |
690 | temp = output_buf_tds_dir(next, ehci, |
691 | hw, p.qh, size); | |
1da177e4 LT |
692 | |
693 | if (seen_count < DBG_SCHED_LIMIT) | |
1cb1d1c0 | 694 | seen[seen_count++].qh = p.qh; |
04b8ad43 | 695 | } else { |
1da177e4 | 696 | temp = 0; |
04b8ad43 | 697 | } |
17dcfc9b AS |
698 | tag = Q_NEXT_TYPE(ehci, hw->hw_next); |
699 | p = p.qh->qh_next; | |
1da177e4 LT |
700 | break; |
701 | case Q_TYPE_FSTN: | |
668ab0db | 702 | temp = scnprintf(next, size, |
1da177e4 LT |
703 | " fstn-%8x/%p", p.fstn->hw_prev, |
704 | p.fstn); | |
6dbd682b | 705 | tag = Q_NEXT_TYPE(ehci, p.fstn->hw_next); |
1da177e4 LT |
706 | p = p.fstn->fstn_next; |
707 | break; | |
708 | case Q_TYPE_ITD: | |
668ab0db | 709 | temp = scnprintf(next, size, |
1da177e4 | 710 | " itd/%p", p.itd); |
6dbd682b | 711 | tag = Q_NEXT_TYPE(ehci, p.itd->hw_next); |
1da177e4 LT |
712 | p = p.itd->itd_next; |
713 | break; | |
714 | case Q_TYPE_SITD: | |
668ab0db | 715 | temp = scnprintf(next, size, |
1da177e4 | 716 | " sitd%d-%04x/%p", |
ffa0248e | 717 | p.sitd->stream->ps.period, |
6dbd682b | 718 | hc32_to_cpup(ehci, &p.sitd->hw_uframe) |
1da177e4 LT |
719 | & 0x0000ffff, |
720 | p.sitd); | |
6dbd682b | 721 | tag = Q_NEXT_TYPE(ehci, p.sitd->hw_next); |
1da177e4 LT |
722 | p = p.sitd->sitd_next; |
723 | break; | |
724 | } | |
725 | size -= temp; | |
726 | next += temp; | |
727 | } while (p.ptr); | |
728 | ||
668ab0db | 729 | temp = scnprintf(next, size, "\n"); |
1da177e4 LT |
730 | size -= temp; |
731 | next += temp; | |
732 | } | |
668ab0db GB |
733 | spin_unlock_irqrestore(&ehci->lock, flags); |
734 | kfree(seen); | |
1da177e4 | 735 | |
3c04e20e | 736 | return buf->alloc_size - size; |
1da177e4 | 737 | } |
1da177e4 LT |
738 | #undef DBG_SCHED_LIMIT |
739 | ||
e8799906 AS |
740 | static const char *rh_state_string(struct ehci_hcd *ehci) |
741 | { | |
742 | switch (ehci->rh_state) { | |
743 | case EHCI_RH_HALTED: | |
744 | return "halted"; | |
745 | case EHCI_RH_SUSPENDED: | |
746 | return "suspended"; | |
747 | case EHCI_RH_RUNNING: | |
748 | return "running"; | |
c0c53dbc AS |
749 | case EHCI_RH_STOPPING: |
750 | return "stopping"; | |
e8799906 AS |
751 | } |
752 | return "?"; | |
753 | } | |
754 | ||
694cc208 | 755 | static ssize_t fill_registers_buffer(struct debug_buffer *buf) |
1da177e4 | 756 | { |
1da177e4 LT |
757 | struct usb_hcd *hcd; |
758 | struct ehci_hcd *ehci; | |
759 | unsigned long flags; | |
760 | unsigned temp, size, i; | |
1cb1d1c0 GB |
761 | char *next, scratch[80]; |
762 | static char fmt[] = "%*s\n"; | |
763 | static char label[] = ""; | |
1da177e4 | 764 | |
694cc208 | 765 | hcd = bus_to_hcd(buf->bus); |
668ab0db | 766 | ehci = hcd_to_ehci(hcd); |
3c04e20e ML |
767 | next = buf->output_buf; |
768 | size = buf->alloc_size; | |
1da177e4 | 769 | |
668ab0db | 770 | spin_lock_irqsave(&ehci->lock, flags); |
1da177e4 | 771 | |
541c7d43 | 772 | if (!HCD_HW_ACCESSIBLE(hcd)) { |
668ab0db | 773 | size = scnprintf(next, size, |
2b70f073 | 774 | "bus %s, device %s\n" |
d49d4317 | 775 | "%s\n" |
1da177e4 LT |
776 | "SUSPENDED (no register access)\n", |
777 | hcd->self.controller->bus->name, | |
7071a3ce | 778 | dev_name(hcd->self.controller), |
d49d4317 | 779 | hcd->product_desc); |
1da177e4 LT |
780 | goto done; |
781 | } | |
782 | ||
783 | /* Capability Registers */ | |
c430131a | 784 | i = HC_VERSION(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); |
668ab0db | 785 | temp = scnprintf(next, size, |
2b70f073 | 786 | "bus %s, device %s\n" |
d49d4317 | 787 | "%s\n" |
e8799906 | 788 | "EHCI %x.%02x, rh state %s\n", |
1da177e4 | 789 | hcd->self.controller->bus->name, |
7071a3ce | 790 | dev_name(hcd->self.controller), |
d49d4317 | 791 | hcd->product_desc, |
e8799906 | 792 | i >> 8, i & 0x0ff, rh_state_string(ehci)); |
1da177e4 LT |
793 | size -= temp; |
794 | next += temp; | |
795 | ||
2c93e790 | 796 | #ifdef CONFIG_USB_PCI |
d49d4317 | 797 | /* EHCI 0.96 and later may have "extended capabilities" */ |
e10e6f43 | 798 | if (dev_is_pci(hcd->self.controller)) { |
d49d4317 DB |
799 | struct pci_dev *pdev; |
800 | u32 offset, cap, cap2; | |
c2fb0171 | 801 | unsigned count = 256 / 4; |
d49d4317 DB |
802 | |
803 | pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); | |
6dbd682b SR |
804 | offset = HCC_EXT_CAPS(ehci_readl(ehci, |
805 | &ehci->caps->hcc_params)); | |
d49d4317 | 806 | while (offset && count--) { |
668ab0db | 807 | pci_read_config_dword(pdev, offset, &cap); |
d49d4317 DB |
808 | switch (cap & 0xff) { |
809 | case 1: | |
668ab0db | 810 | temp = scnprintf(next, size, |
d49d4317 DB |
811 | "ownership %08x%s%s\n", cap, |
812 | (cap & (1 << 24)) ? " linux" : "", | |
813 | (cap & (1 << 16)) ? " firmware" : ""); | |
814 | size -= temp; | |
815 | next += temp; | |
816 | ||
817 | offset += 4; | |
668ab0db GB |
818 | pci_read_config_dword(pdev, offset, &cap2); |
819 | temp = scnprintf(next, size, | |
d49d4317 DB |
820 | "SMI sts/enable 0x%08x\n", cap2); |
821 | size -= temp; | |
822 | next += temp; | |
823 | break; | |
824 | case 0: /* illegal reserved capability */ | |
825 | cap = 0; | |
826 | /* FALLTHROUGH */ | |
827 | default: /* unknown */ | |
828 | break; | |
829 | } | |
1d5a3158 | 830 | offset = (cap >> 8) & 0xff; |
d49d4317 DB |
831 | } |
832 | } | |
833 | #endif | |
834 | ||
0784b4d5 | 835 | /* FIXME interpret both types of params */ |
083522d7 | 836 | i = ehci_readl(ehci, &ehci->caps->hcs_params); |
668ab0db | 837 | temp = scnprintf(next, size, "structural params 0x%08x\n", i); |
1da177e4 LT |
838 | size -= temp; |
839 | next += temp; | |
840 | ||
083522d7 | 841 | i = ehci_readl(ehci, &ehci->caps->hcc_params); |
668ab0db | 842 | temp = scnprintf(next, size, "capability params 0x%08x\n", i); |
1da177e4 LT |
843 | size -= temp; |
844 | next += temp; | |
845 | ||
846 | /* Operational Registers */ | |
668ab0db | 847 | temp = dbg_status_buf(scratch, sizeof(scratch), label, |
083522d7 | 848 | ehci_readl(ehci, &ehci->regs->status)); |
668ab0db | 849 | temp = scnprintf(next, size, fmt, temp, scratch); |
1da177e4 LT |
850 | size -= temp; |
851 | next += temp; | |
852 | ||
668ab0db | 853 | temp = dbg_command_buf(scratch, sizeof(scratch), label, |
083522d7 | 854 | ehci_readl(ehci, &ehci->regs->command)); |
668ab0db | 855 | temp = scnprintf(next, size, fmt, temp, scratch); |
1da177e4 LT |
856 | size -= temp; |
857 | next += temp; | |
858 | ||
668ab0db | 859 | temp = dbg_intr_buf(scratch, sizeof(scratch), label, |
083522d7 | 860 | ehci_readl(ehci, &ehci->regs->intr_enable)); |
668ab0db | 861 | temp = scnprintf(next, size, fmt, temp, scratch); |
1da177e4 LT |
862 | size -= temp; |
863 | next += temp; | |
864 | ||
668ab0db | 865 | temp = scnprintf(next, size, "uframe %04x\n", |
68aa95d5 | 866 | ehci_read_frame_index(ehci)); |
1da177e4 LT |
867 | size -= temp; |
868 | next += temp; | |
869 | ||
668ab0db GB |
870 | for (i = 1; i <= HCS_N_PORTS(ehci->hcs_params); i++) { |
871 | temp = dbg_port_buf(scratch, sizeof(scratch), label, i, | |
6dbd682b SR |
872 | ehci_readl(ehci, |
873 | &ehci->regs->port_status[i - 1])); | |
668ab0db | 874 | temp = scnprintf(next, size, fmt, temp, scratch); |
1da177e4 LT |
875 | size -= temp; |
876 | next += temp; | |
d49d4317 | 877 | if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) { |
668ab0db | 878 | temp = scnprintf(next, size, |
d49d4317 | 879 | " debug control %08x\n", |
6dbd682b SR |
880 | ehci_readl(ehci, |
881 | &ehci->debug->control)); | |
d49d4317 DB |
882 | size -= temp; |
883 | next += temp; | |
884 | } | |
1da177e4 LT |
885 | } |
886 | ||
6e018751 | 887 | if (!list_empty(&ehci->async_unlink)) { |
99ac5b1e | 888 | temp = scnprintf(next, size, "async unlink qh %p\n", |
6e018751 AS |
889 | list_first_entry(&ehci->async_unlink, |
890 | struct ehci_qh, unlink_node)); | |
1da177e4 LT |
891 | size -= temp; |
892 | next += temp; | |
893 | } | |
894 | ||
895 | #ifdef EHCI_STATS | |
668ab0db | 896 | temp = scnprintf(next, size, |
99ac5b1e AS |
897 | "irq normal %ld err %ld iaa %ld (lost %ld)\n", |
898 | ehci->stats.normal, ehci->stats.error, ehci->stats.iaa, | |
1da177e4 LT |
899 | ehci->stats.lost_iaa); |
900 | size -= temp; | |
901 | next += temp; | |
902 | ||
668ab0db | 903 | temp = scnprintf(next, size, "complete %ld unlink %ld\n", |
1da177e4 LT |
904 | ehci->stats.complete, ehci->stats.unlink); |
905 | size -= temp; | |
906 | next += temp; | |
907 | #endif | |
908 | ||
909 | done: | |
668ab0db | 910 | spin_unlock_irqrestore(&ehci->lock, flags); |
1da177e4 | 911 | |
3c04e20e | 912 | return buf->alloc_size - size; |
1da177e4 | 913 | } |
1da177e4 | 914 | |
694cc208 | 915 | static struct debug_buffer *alloc_buffer(struct usb_bus *bus, |
c768ffb8 | 916 | ssize_t (*fill_func)(struct debug_buffer *)) |
1da177e4 | 917 | { |
694cc208 TJ |
918 | struct debug_buffer *buf; |
919 | ||
12ef7dd9 | 920 | buf = kzalloc(sizeof(*buf), GFP_KERNEL); |
1da177e4 | 921 | |
694cc208 TJ |
922 | if (buf) { |
923 | buf->bus = bus; | |
924 | buf->fill_func = fill_func; | |
925 | mutex_init(&buf->mutex); | |
3c04e20e | 926 | buf->alloc_size = PAGE_SIZE; |
694cc208 TJ |
927 | } |
928 | ||
929 | return buf; | |
1da177e4 LT |
930 | } |
931 | ||
694cc208 | 932 | static int fill_buffer(struct debug_buffer *buf) |
1da177e4 | 933 | { |
694cc208 TJ |
934 | int ret = 0; |
935 | ||
3c04e20e | 936 | if (!buf->output_buf) |
73f35c60 | 937 | buf->output_buf = vmalloc(buf->alloc_size); |
694cc208 | 938 | |
3c04e20e | 939 | if (!buf->output_buf) { |
694cc208 TJ |
940 | ret = -ENOMEM; |
941 | goto out; | |
942 | } | |
943 | ||
944 | ret = buf->fill_func(buf); | |
1da177e4 | 945 | |
694cc208 TJ |
946 | if (ret >= 0) { |
947 | buf->count = ret; | |
948 | ret = 0; | |
949 | } | |
950 | ||
951 | out: | |
952 | return ret; | |
1da177e4 LT |
953 | } |
954 | ||
694cc208 | 955 | static ssize_t debug_output(struct file *file, char __user *user_buf, |
c768ffb8 | 956 | size_t len, loff_t *offset) |
694cc208 TJ |
957 | { |
958 | struct debug_buffer *buf = file->private_data; | |
959 | int ret = 0; | |
960 | ||
961 | mutex_lock(&buf->mutex); | |
962 | if (buf->count == 0) { | |
963 | ret = fill_buffer(buf); | |
964 | if (ret != 0) { | |
965 | mutex_unlock(&buf->mutex); | |
966 | goto out; | |
967 | } | |
968 | } | |
969 | mutex_unlock(&buf->mutex); | |
970 | ||
971 | ret = simple_read_from_buffer(user_buf, len, offset, | |
3c04e20e | 972 | buf->output_buf, buf->count); |
694cc208 TJ |
973 | |
974 | out: | |
975 | return ret; | |
694cc208 TJ |
976 | } |
977 | ||
978 | static int debug_close(struct inode *inode, struct file *file) | |
979 | { | |
980 | struct debug_buffer *buf = file->private_data; | |
1da177e4 | 981 | |
694cc208 | 982 | if (buf) { |
f8086a07 | 983 | vfree(buf->output_buf); |
694cc208 TJ |
984 | kfree(buf); |
985 | } | |
986 | ||
987 | return 0; | |
988 | } | |
d0ce5c6b | 989 | |
694cc208 TJ |
990 | static int debug_async_open(struct inode *inode, struct file *file) |
991 | { | |
992 | file->private_data = alloc_buffer(inode->i_private, fill_async_buffer); | |
993 | ||
994 | return file->private_data ? 0 : -ENOMEM; | |
995 | } | |
996 | ||
d0ce5c6b AS |
997 | static int debug_bandwidth_open(struct inode *inode, struct file *file) |
998 | { | |
999 | file->private_data = alloc_buffer(inode->i_private, | |
1000 | fill_bandwidth_buffer); | |
1001 | ||
1002 | return file->private_data ? 0 : -ENOMEM; | |
1003 | } | |
1004 | ||
694cc208 TJ |
1005 | static int debug_periodic_open(struct inode *inode, struct file *file) |
1006 | { | |
3c04e20e | 1007 | struct debug_buffer *buf; |
8d587d64 | 1008 | |
3c04e20e ML |
1009 | buf = alloc_buffer(inode->i_private, fill_periodic_buffer); |
1010 | if (!buf) | |
1011 | return -ENOMEM; | |
694cc208 | 1012 | |
c2fb0171 | 1013 | buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8) * PAGE_SIZE; |
3c04e20e ML |
1014 | file->private_data = buf; |
1015 | return 0; | |
694cc208 TJ |
1016 | } |
1017 | ||
1018 | static int debug_registers_open(struct inode *inode, struct file *file) | |
1019 | { | |
1020 | file->private_data = alloc_buffer(inode->i_private, | |
1021 | fill_registers_buffer); | |
1022 | ||
1023 | return file->private_data ? 0 : -ENOMEM; | |
1024 | } | |
1025 | ||
668ab0db | 1026 | static inline void create_debug_files(struct ehci_hcd *ehci) |
694cc208 TJ |
1027 | { |
1028 | struct usb_bus *bus = &ehci_to_hcd(ehci)->self; | |
1029 | ||
1030 | ehci->debug_dir = debugfs_create_dir(bus->bus_name, ehci_debug_root); | |
1031 | if (!ehci->debug_dir) | |
185c9bcf ML |
1032 | return; |
1033 | ||
1034 | if (!debugfs_create_file("async", S_IRUGO, ehci->debug_dir, bus, | |
1035 | &debug_async_fops)) | |
1036 | goto file_error; | |
1037 | ||
d0ce5c6b AS |
1038 | if (!debugfs_create_file("bandwidth", S_IRUGO, ehci->debug_dir, bus, |
1039 | &debug_bandwidth_fops)) | |
1040 | goto file_error; | |
1041 | ||
185c9bcf ML |
1042 | if (!debugfs_create_file("periodic", S_IRUGO, ehci->debug_dir, bus, |
1043 | &debug_periodic_fops)) | |
1044 | goto file_error; | |
1045 | ||
1046 | if (!debugfs_create_file("registers", S_IRUGO, ehci->debug_dir, bus, | |
1047 | &debug_registers_fops)) | |
1048 | goto file_error; | |
1049 | ||
694cc208 TJ |
1050 | return; |
1051 | ||
185c9bcf ML |
1052 | file_error: |
1053 | debugfs_remove_recursive(ehci->debug_dir); | |
694cc208 TJ |
1054 | } |
1055 | ||
668ab0db | 1056 | static inline void remove_debug_files(struct ehci_hcd *ehci) |
694cc208 | 1057 | { |
185c9bcf | 1058 | debugfs_remove_recursive(ehci->debug_dir); |
694cc208 TJ |
1059 | } |
1060 | ||
128f8b3d AS |
1061 | #else /* CONFIG_DYNAMIC_DEBUG */ |
1062 | ||
1063 | static inline void dbg_hcs_params(struct ehci_hcd *ehci, char *label) { } | |
1064 | static inline void dbg_hcc_params(struct ehci_hcd *ehci, char *label) { } | |
1065 | ||
1066 | static inline void __maybe_unused dbg_qh(const char *label, | |
1067 | struct ehci_hcd *ehci, struct ehci_qh *qh) { } | |
1068 | ||
1069 | static inline int __maybe_unused dbg_status_buf(const char *buf, | |
1070 | unsigned int len, const char *label, u32 status) | |
1071 | { return 0; } | |
1072 | ||
1073 | static inline int __maybe_unused dbg_command_buf(const char *buf, | |
1074 | unsigned int len, const char *label, u32 command) | |
1075 | { return 0; } | |
1076 | ||
1077 | static inline int __maybe_unused dbg_intr_buf(const char *buf, | |
1078 | unsigned int len, const char *label, u32 enable) | |
1079 | { return 0; } | |
1080 | ||
1081 | static inline int __maybe_unused dbg_port_buf(char *buf, | |
1082 | unsigned int len, const char *label, int port, u32 status) | |
1083 | { return 0; } | |
1084 | ||
1085 | static inline void dbg_status(struct ehci_hcd *ehci, const char *label, | |
1086 | u32 status) { } | |
1087 | static inline void dbg_cmd(struct ehci_hcd *ehci, const char *label, | |
1088 | u32 command) { } | |
1089 | static inline void dbg_port(struct ehci_hcd *ehci, const char *label, | |
1090 | int port, u32 status) { } | |
1091 | ||
1092 | static inline void create_debug_files(struct ehci_hcd *bus) { } | |
1093 | static inline void remove_debug_files(struct ehci_hcd *bus) { } | |
1094 | ||
93df42ba | 1095 | #endif /* CONFIG_DYNAMIC_DEBUG */ |