Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2001-2002 by David Brownell |
David Brownell | 53bd6a6 | 2006-08-30 14:50:06 -0700 | [diff] [blame] | 3 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * This program is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License as published by the |
| 6 | * Free Software Foundation; either version 2 of the License, or (at your |
| 7 | * option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software Foundation, |
| 16 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 17 | */ |
| 18 | |
| 19 | /* this file is part of ehci-hcd.c */ |
| 20 | |
| 21 | #define ehci_dbg(ehci, fmt, args...) \ |
| 22 | dev_dbg (ehci_to_hcd(ehci)->self.controller , fmt , ## args ) |
| 23 | #define ehci_err(ehci, fmt, args...) \ |
| 24 | dev_err (ehci_to_hcd(ehci)->self.controller , fmt , ## args ) |
| 25 | #define ehci_info(ehci, fmt, args...) \ |
| 26 | dev_info (ehci_to_hcd(ehci)->self.controller , fmt , ## args ) |
| 27 | #define ehci_warn(ehci, fmt, args...) \ |
| 28 | dev_warn (ehci_to_hcd(ehci)->self.controller , fmt , ## args ) |
| 29 | |
| 30 | #ifdef EHCI_VERBOSE_DEBUG |
| 31 | # define vdbg dbg |
| 32 | # define ehci_vdbg ehci_dbg |
| 33 | #else |
| 34 | # define vdbg(fmt,args...) do { } while (0) |
| 35 | # define ehci_vdbg(ehci, fmt, args...) do { } while (0) |
| 36 | #endif |
| 37 | |
| 38 | #ifdef DEBUG |
| 39 | |
| 40 | /* check the values in the HCSPARAMS register |
| 41 | * (host controller _Structural_ parameters) |
| 42 | * see EHCI spec, Table 2-4 for each value |
| 43 | */ |
| 44 | static void dbg_hcs_params (struct ehci_hcd *ehci, char *label) |
| 45 | { |
| 46 | u32 params = readl (&ehci->caps->hcs_params); |
| 47 | |
| 48 | ehci_dbg (ehci, |
| 49 | "%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n", |
| 50 | label, params, |
| 51 | HCS_DEBUG_PORT (params), |
| 52 | HCS_INDICATOR (params) ? " ind" : "", |
| 53 | HCS_N_CC (params), |
| 54 | HCS_N_PCC (params), |
| 55 | HCS_PORTROUTED (params) ? "" : " ordered", |
| 56 | HCS_PPC (params) ? "" : " !ppc", |
| 57 | HCS_N_PORTS (params) |
| 58 | ); |
| 59 | /* Port routing, per EHCI 0.95 Spec, Section 2.2.5 */ |
| 60 | if (HCS_PORTROUTED (params)) { |
| 61 | int i; |
| 62 | char buf [46], tmp [7], byte; |
| 63 | |
| 64 | buf[0] = 0; |
| 65 | for (i = 0; i < HCS_N_PORTS (params); i++) { |
| 66 | // FIXME MIPS won't readb() ... |
| 67 | byte = readb (&ehci->caps->portroute[(i>>1)]); |
David Brownell | 53bd6a6 | 2006-08-30 14:50:06 -0700 | [diff] [blame] | 68 | sprintf(tmp, "%d ", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | ((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf))); |
| 70 | strcat(buf, tmp); |
| 71 | } |
| 72 | ehci_dbg (ehci, "%s portroute %s\n", |
| 73 | label, buf); |
| 74 | } |
| 75 | } |
| 76 | #else |
| 77 | |
| 78 | static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {} |
| 79 | |
| 80 | #endif |
| 81 | |
| 82 | #ifdef DEBUG |
| 83 | |
| 84 | /* check the values in the HCCPARAMS register |
| 85 | * (host controller _Capability_ parameters) |
| 86 | * see EHCI Spec, Table 2-5 for each value |
| 87 | * */ |
| 88 | static void dbg_hcc_params (struct ehci_hcd *ehci, char *label) |
| 89 | { |
| 90 | u32 params = readl (&ehci->caps->hcc_params); |
| 91 | |
| 92 | if (HCC_ISOC_CACHE (params)) { |
| 93 | ehci_dbg (ehci, |
| 94 | "%s hcc_params %04x caching frame %s%s%s\n", |
| 95 | label, params, |
| 96 | HCC_PGM_FRAMELISTLEN (params) ? "256/512/1024" : "1024", |
| 97 | HCC_CANPARK (params) ? " park" : "", |
| 98 | HCC_64BIT_ADDR (params) ? " 64 bit addr" : ""); |
| 99 | } else { |
| 100 | ehci_dbg (ehci, |
| 101 | "%s hcc_params %04x thresh %d uframes %s%s%s\n", |
| 102 | label, |
| 103 | params, |
| 104 | HCC_ISOC_THRES (params), |
| 105 | HCC_PGM_FRAMELISTLEN (params) ? "256/512/1024" : "1024", |
| 106 | HCC_CANPARK (params) ? " park" : "", |
| 107 | HCC_64BIT_ADDR (params) ? " 64 bit addr" : ""); |
| 108 | } |
| 109 | } |
| 110 | #else |
| 111 | |
| 112 | static inline void dbg_hcc_params (struct ehci_hcd *ehci, char *label) {} |
| 113 | |
| 114 | #endif |
| 115 | |
| 116 | #ifdef DEBUG |
| 117 | |
| 118 | static void __attribute__((__unused__)) |
| 119 | dbg_qtd (const char *label, struct ehci_hcd *ehci, struct ehci_qtd *qtd) |
| 120 | { |
| 121 | ehci_dbg (ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd, |
| 122 | le32_to_cpup (&qtd->hw_next), |
| 123 | le32_to_cpup (&qtd->hw_alt_next), |
| 124 | le32_to_cpup (&qtd->hw_token), |
| 125 | le32_to_cpup (&qtd->hw_buf [0])); |
| 126 | if (qtd->hw_buf [1]) |
| 127 | ehci_dbg (ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n", |
| 128 | le32_to_cpup (&qtd->hw_buf [1]), |
| 129 | le32_to_cpup (&qtd->hw_buf [2]), |
| 130 | le32_to_cpup (&qtd->hw_buf [3]), |
| 131 | le32_to_cpup (&qtd->hw_buf [4])); |
| 132 | } |
| 133 | |
| 134 | static void __attribute__((__unused__)) |
| 135 | dbg_qh (const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) |
| 136 | { |
| 137 | ehci_dbg (ehci, "%s qh %p n%08x info %x %x qtd %x\n", label, |
| 138 | qh, qh->hw_next, qh->hw_info1, qh->hw_info2, |
| 139 | qh->hw_current); |
| 140 | dbg_qtd ("overlay", ehci, (struct ehci_qtd *) &qh->hw_qtd_next); |
| 141 | } |
| 142 | |
| 143 | static void __attribute__((__unused__)) |
David Brownell | 53bd6a6 | 2006-08-30 14:50:06 -0700 | [diff] [blame] | 144 | dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | { |
| 146 | ehci_dbg (ehci, "%s [%d] itd %p, next %08x, urb %p\n", |
| 147 | label, itd->frame, itd, le32_to_cpu(itd->hw_next), itd->urb); |
| 148 | ehci_dbg (ehci, |
David Brownell | 53bd6a6 | 2006-08-30 14:50:06 -0700 | [diff] [blame] | 149 | " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | le32_to_cpu(itd->hw_transaction[0]), |
| 151 | le32_to_cpu(itd->hw_transaction[1]), |
| 152 | le32_to_cpu(itd->hw_transaction[2]), |
| 153 | le32_to_cpu(itd->hw_transaction[3]), |
| 154 | le32_to_cpu(itd->hw_transaction[4]), |
| 155 | le32_to_cpu(itd->hw_transaction[5]), |
| 156 | le32_to_cpu(itd->hw_transaction[6]), |
| 157 | le32_to_cpu(itd->hw_transaction[7])); |
| 158 | ehci_dbg (ehci, |
David Brownell | 53bd6a6 | 2006-08-30 14:50:06 -0700 | [diff] [blame] | 159 | " buf: %08x %08x %08x %08x %08x %08x %08x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | le32_to_cpu(itd->hw_bufp[0]), |
| 161 | le32_to_cpu(itd->hw_bufp[1]), |
| 162 | le32_to_cpu(itd->hw_bufp[2]), |
| 163 | le32_to_cpu(itd->hw_bufp[3]), |
| 164 | le32_to_cpu(itd->hw_bufp[4]), |
| 165 | le32_to_cpu(itd->hw_bufp[5]), |
| 166 | le32_to_cpu(itd->hw_bufp[6])); |
| 167 | ehci_dbg (ehci, " index: %d %d %d %d %d %d %d %d\n", |
| 168 | itd->index[0], itd->index[1], itd->index[2], |
| 169 | itd->index[3], itd->index[4], itd->index[5], |
| 170 | itd->index[6], itd->index[7]); |
| 171 | } |
| 172 | |
| 173 | static void __attribute__((__unused__)) |
David Brownell | 53bd6a6 | 2006-08-30 14:50:06 -0700 | [diff] [blame] | 174 | dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | { |
| 176 | ehci_dbg (ehci, "%s [%d] sitd %p, next %08x, urb %p\n", |
| 177 | label, sitd->frame, sitd, le32_to_cpu(sitd->hw_next), sitd->urb); |
| 178 | ehci_dbg (ehci, |
David Brownell | 53bd6a6 | 2006-08-30 14:50:06 -0700 | [diff] [blame] | 179 | " addr %08x sched %04x result %08x buf %08x %08x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | le32_to_cpu(sitd->hw_fullspeed_ep), |
| 181 | le32_to_cpu(sitd->hw_uframe), |
| 182 | le32_to_cpu(sitd->hw_results), |
| 183 | le32_to_cpu(sitd->hw_buf [0]), |
| 184 | le32_to_cpu(sitd->hw_buf [1])); |
| 185 | } |
| 186 | |
| 187 | static int __attribute__((__unused__)) |
| 188 | dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) |
| 189 | { |
| 190 | return scnprintf (buf, len, |
| 191 | "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s", |
| 192 | label, label [0] ? " " : "", status, |
| 193 | (status & STS_ASS) ? " Async" : "", |
| 194 | (status & STS_PSS) ? " Periodic" : "", |
| 195 | (status & STS_RECL) ? " Recl" : "", |
| 196 | (status & STS_HALT) ? " Halt" : "", |
| 197 | (status & STS_IAA) ? " IAA" : "", |
| 198 | (status & STS_FATAL) ? " FATAL" : "", |
| 199 | (status & STS_FLR) ? " FLR" : "", |
| 200 | (status & STS_PCD) ? " PCD" : "", |
| 201 | (status & STS_ERR) ? " ERR" : "", |
| 202 | (status & STS_INT) ? " INT" : "" |
| 203 | ); |
| 204 | } |
| 205 | |
| 206 | static int __attribute__((__unused__)) |
| 207 | dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable) |
| 208 | { |
| 209 | return scnprintf (buf, len, |
| 210 | "%s%sintrenable %02x%s%s%s%s%s%s", |
| 211 | label, label [0] ? " " : "", enable, |
| 212 | (enable & STS_IAA) ? " IAA" : "", |
| 213 | (enable & STS_FATAL) ? " FATAL" : "", |
| 214 | (enable & STS_FLR) ? " FLR" : "", |
| 215 | (enable & STS_PCD) ? " PCD" : "", |
| 216 | (enable & STS_ERR) ? " ERR" : "", |
| 217 | (enable & STS_INT) ? " INT" : "" |
| 218 | ); |
| 219 | } |
| 220 | |
| 221 | static const char *const fls_strings [] = |
| 222 | { "1024", "512", "256", "??" }; |
| 223 | |
| 224 | static int |
| 225 | dbg_command_buf (char *buf, unsigned len, const char *label, u32 command) |
| 226 | { |
| 227 | return scnprintf (buf, len, |
| 228 | "%s%scommand %06x %s=%d ithresh=%d%s%s%s%s period=%s%s %s", |
| 229 | label, label [0] ? " " : "", command, |
| 230 | (command & CMD_PARK) ? "park" : "(park)", |
| 231 | CMD_PARK_CNT (command), |
| 232 | (command >> 16) & 0x3f, |
| 233 | (command & CMD_LRESET) ? " LReset" : "", |
| 234 | (command & CMD_IAAD) ? " IAAD" : "", |
| 235 | (command & CMD_ASE) ? " Async" : "", |
| 236 | (command & CMD_PSE) ? " Periodic" : "", |
| 237 | fls_strings [(command >> 2) & 0x3], |
| 238 | (command & CMD_RESET) ? " Reset" : "", |
| 239 | (command & CMD_RUN) ? "RUN" : "HALT" |
| 240 | ); |
| 241 | } |
| 242 | |
| 243 | static int |
| 244 | dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) |
| 245 | { |
| 246 | char *sig; |
| 247 | |
| 248 | /* signaling state */ |
| 249 | switch (status & (3 << 10)) { |
| 250 | case 0 << 10: sig = "se0"; break; |
| 251 | case 1 << 10: sig = "k"; break; /* low speed */ |
| 252 | case 2 << 10: sig = "j"; break; |
| 253 | default: sig = "?"; break; |
| 254 | } |
| 255 | |
| 256 | return scnprintf (buf, len, |
David Brownell | d49d431 | 2005-05-07 13:21:50 -0700 | [diff] [blame] | 257 | "%s%sport %d status %06x%s%s sig=%s%s%s%s%s%s%s%s%s%s", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | label, label [0] ? " " : "", port, status, |
| 259 | (status & PORT_POWER) ? " POWER" : "", |
| 260 | (status & PORT_OWNER) ? " OWNER" : "", |
| 261 | sig, |
| 262 | (status & PORT_RESET) ? " RESET" : "", |
| 263 | (status & PORT_SUSPEND) ? " SUSPEND" : "", |
| 264 | (status & PORT_RESUME) ? " RESUME" : "", |
| 265 | (status & PORT_OCC) ? " OCC" : "", |
| 266 | (status & PORT_OC) ? " OC" : "", |
| 267 | (status & PORT_PEC) ? " PEC" : "", |
| 268 | (status & PORT_PE) ? " PE" : "", |
| 269 | (status & PORT_CSC) ? " CSC" : "", |
| 270 | (status & PORT_CONNECT) ? " CONNECT" : "" |
| 271 | ); |
| 272 | } |
| 273 | |
| 274 | #else |
| 275 | static inline void __attribute__((__unused__)) |
| 276 | dbg_qh (char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) |
| 277 | {} |
| 278 | |
| 279 | static inline int __attribute__((__unused__)) |
| 280 | dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) |
| 281 | { return 0; } |
| 282 | |
| 283 | static inline int __attribute__((__unused__)) |
| 284 | dbg_command_buf (char *buf, unsigned len, const char *label, u32 command) |
| 285 | { return 0; } |
| 286 | |
| 287 | static inline int __attribute__((__unused__)) |
| 288 | dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable) |
| 289 | { return 0; } |
| 290 | |
| 291 | static inline int __attribute__((__unused__)) |
| 292 | dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) |
| 293 | { return 0; } |
| 294 | |
| 295 | #endif /* DEBUG */ |
| 296 | |
| 297 | /* functions have the "wrong" filename when they're output... */ |
| 298 | #define dbg_status(ehci, label, status) { \ |
| 299 | char _buf [80]; \ |
| 300 | dbg_status_buf (_buf, sizeof _buf, label, status); \ |
| 301 | ehci_dbg (ehci, "%s\n", _buf); \ |
| 302 | } |
| 303 | |
| 304 | #define dbg_cmd(ehci, label, command) { \ |
| 305 | char _buf [80]; \ |
| 306 | dbg_command_buf (_buf, sizeof _buf, label, command); \ |
| 307 | ehci_dbg (ehci, "%s\n", _buf); \ |
| 308 | } |
| 309 | |
| 310 | #define dbg_port(ehci, label, port, status) { \ |
| 311 | char _buf [80]; \ |
| 312 | dbg_port_buf (_buf, sizeof _buf, label, port, status); \ |
| 313 | ehci_dbg (ehci, "%s\n", _buf); \ |
| 314 | } |
| 315 | |
| 316 | /*-------------------------------------------------------------------------*/ |
| 317 | |
| 318 | #ifdef STUB_DEBUG_FILES |
| 319 | |
| 320 | static inline void create_debug_files (struct ehci_hcd *bus) { } |
| 321 | static inline void remove_debug_files (struct ehci_hcd *bus) { } |
| 322 | |
| 323 | #else |
| 324 | |
| 325 | /* troubleshooting help: expose state in driverfs */ |
| 326 | |
| 327 | #define speed_char(info1) ({ char tmp; \ |
| 328 | switch (info1 & (3 << 12)) { \ |
| 329 | case 0 << 12: tmp = 'f'; break; \ |
| 330 | case 1 << 12: tmp = 'l'; break; \ |
| 331 | case 2 << 12: tmp = 'h'; break; \ |
| 332 | default: tmp = '?'; break; \ |
| 333 | }; tmp; }) |
| 334 | |
| 335 | static inline char token_mark (__le32 token) |
| 336 | { |
| 337 | __u32 v = le32_to_cpu (token); |
| 338 | if (v & QTD_STS_ACTIVE) |
| 339 | return '*'; |
| 340 | if (v & QTD_STS_HALT) |
| 341 | return '-'; |
| 342 | if (!IS_SHORT_READ (v)) |
| 343 | return ' '; |
| 344 | /* tries to advance through hw_alt_next */ |
| 345 | return '/'; |
| 346 | } |
| 347 | |
| 348 | static void qh_lines ( |
| 349 | struct ehci_hcd *ehci, |
| 350 | struct ehci_qh *qh, |
| 351 | char **nextp, |
| 352 | unsigned *sizep |
| 353 | ) |
| 354 | { |
| 355 | u32 scratch; |
| 356 | u32 hw_curr; |
| 357 | struct list_head *entry; |
| 358 | struct ehci_qtd *td; |
| 359 | unsigned temp; |
| 360 | unsigned size = *sizep; |
| 361 | char *next = *nextp; |
| 362 | char mark; |
| 363 | |
| 364 | if (qh->hw_qtd_next == EHCI_LIST_END) /* NEC does this */ |
| 365 | mark = '@'; |
| 366 | else |
| 367 | mark = token_mark (qh->hw_token); |
| 368 | if (mark == '/') { /* qh_alt_next controls qh advance? */ |
| 369 | if ((qh->hw_alt_next & QTD_MASK) == ehci->async->hw_alt_next) |
| 370 | mark = '#'; /* blocked */ |
| 371 | else if (qh->hw_alt_next == EHCI_LIST_END) |
| 372 | mark = '.'; /* use hw_qtd_next */ |
| 373 | /* else alt_next points to some other qtd */ |
| 374 | } |
| 375 | scratch = le32_to_cpup (&qh->hw_info1); |
| 376 | hw_curr = (mark == '*') ? le32_to_cpup (&qh->hw_current) : 0; |
| 377 | temp = scnprintf (next, size, |
| 378 | "qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)", |
| 379 | qh, scratch & 0x007f, |
| 380 | speed_char (scratch), |
| 381 | (scratch >> 8) & 0x000f, |
| 382 | scratch, le32_to_cpup (&qh->hw_info2), |
| 383 | le32_to_cpup (&qh->hw_token), mark, |
| 384 | (__constant_cpu_to_le32 (QTD_TOGGLE) & qh->hw_token) |
| 385 | ? "data1" : "data0", |
| 386 | (le32_to_cpup (&qh->hw_alt_next) >> 1) & 0x0f); |
| 387 | size -= temp; |
| 388 | next += temp; |
| 389 | |
| 390 | /* hc may be modifying the list as we read it ... */ |
| 391 | list_for_each (entry, &qh->qtd_list) { |
| 392 | td = list_entry (entry, struct ehci_qtd, qtd_list); |
| 393 | scratch = le32_to_cpup (&td->hw_token); |
| 394 | mark = ' '; |
| 395 | if (hw_curr == td->qtd_dma) |
| 396 | mark = '*'; |
David Brownell | 9a5d3e9 | 2005-04-18 17:39:23 -0700 | [diff] [blame] | 397 | else if (qh->hw_qtd_next == cpu_to_le32(td->qtd_dma)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | mark = '+'; |
| 399 | else if (QTD_LENGTH (scratch)) { |
| 400 | if (td->hw_alt_next == ehci->async->hw_alt_next) |
| 401 | mark = '#'; |
| 402 | else if (td->hw_alt_next != EHCI_LIST_END) |
| 403 | mark = '/'; |
| 404 | } |
| 405 | temp = snprintf (next, size, |
| 406 | "\n\t%p%c%s len=%d %08x urb %p", |
| 407 | td, mark, ({ char *tmp; |
| 408 | switch ((scratch>>8)&0x03) { |
| 409 | case 0: tmp = "out"; break; |
| 410 | case 1: tmp = "in"; break; |
| 411 | case 2: tmp = "setup"; break; |
| 412 | default: tmp = "?"; break; |
| 413 | } tmp;}), |
| 414 | (scratch >> 16) & 0x7fff, |
| 415 | scratch, |
| 416 | td->urb); |
| 417 | if (temp < 0) |
| 418 | temp = 0; |
| 419 | else if (size < temp) |
| 420 | temp = size; |
| 421 | size -= temp; |
| 422 | next += temp; |
| 423 | if (temp == size) |
| 424 | goto done; |
| 425 | } |
| 426 | |
| 427 | temp = snprintf (next, size, "\n"); |
| 428 | if (temp < 0) |
| 429 | temp = 0; |
| 430 | else if (size < temp) |
| 431 | temp = size; |
| 432 | size -= temp; |
| 433 | next += temp; |
| 434 | |
| 435 | done: |
| 436 | *sizep = size; |
| 437 | *nextp = next; |
| 438 | } |
| 439 | |
| 440 | static ssize_t |
| 441 | show_async (struct class_device *class_dev, char *buf) |
| 442 | { |
| 443 | struct usb_bus *bus; |
| 444 | struct usb_hcd *hcd; |
| 445 | struct ehci_hcd *ehci; |
| 446 | unsigned long flags; |
| 447 | unsigned temp, size; |
| 448 | char *next; |
| 449 | struct ehci_qh *qh; |
| 450 | |
| 451 | *buf = 0; |
| 452 | |
gregkh@suse.de | 8561b10 | 2005-03-15 15:10:13 -0800 | [diff] [blame] | 453 | bus = class_get_devdata(class_dev); |
Alan Stern | 1720058 | 2006-08-30 11:32:52 -0400 | [diff] [blame] | 454 | hcd = bus_to_hcd(bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | ehci = hcd_to_ehci (hcd); |
| 456 | next = buf; |
| 457 | size = PAGE_SIZE; |
| 458 | |
| 459 | /* dumps a snapshot of the async schedule. |
| 460 | * usually empty except for long-term bulk reads, or head. |
| 461 | * one QH per line, and TDs we know about |
| 462 | */ |
| 463 | spin_lock_irqsave (&ehci->lock, flags); |
| 464 | for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh) |
| 465 | qh_lines (ehci, qh, &next, &size); |
| 466 | if (ehci->reclaim && size > 0) { |
| 467 | temp = scnprintf (next, size, "\nreclaim =\n"); |
| 468 | size -= temp; |
| 469 | next += temp; |
| 470 | |
| 471 | for (qh = ehci->reclaim; size > 0 && qh; qh = qh->reclaim) |
| 472 | qh_lines (ehci, qh, &next, &size); |
| 473 | } |
| 474 | spin_unlock_irqrestore (&ehci->lock, flags); |
| 475 | |
| 476 | return strlen (buf); |
| 477 | } |
| 478 | static CLASS_DEVICE_ATTR (async, S_IRUGO, show_async, NULL); |
| 479 | |
| 480 | #define DBG_SCHED_LIMIT 64 |
| 481 | |
| 482 | static ssize_t |
| 483 | show_periodic (struct class_device *class_dev, char *buf) |
| 484 | { |
| 485 | struct usb_bus *bus; |
| 486 | struct usb_hcd *hcd; |
| 487 | struct ehci_hcd *ehci; |
| 488 | unsigned long flags; |
| 489 | union ehci_shadow p, *seen; |
| 490 | unsigned temp, size, seen_count; |
| 491 | char *next; |
| 492 | unsigned i; |
| 493 | __le32 tag; |
| 494 | |
Christoph Lameter | 54e6ecb | 2006-12-06 20:33:16 -0800 | [diff] [blame^] | 495 | if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | return 0; |
| 497 | seen_count = 0; |
| 498 | |
gregkh@suse.de | 8561b10 | 2005-03-15 15:10:13 -0800 | [diff] [blame] | 499 | bus = class_get_devdata(class_dev); |
Alan Stern | 1720058 | 2006-08-30 11:32:52 -0400 | [diff] [blame] | 500 | hcd = bus_to_hcd(bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | ehci = hcd_to_ehci (hcd); |
| 502 | next = buf; |
| 503 | size = PAGE_SIZE; |
| 504 | |
| 505 | temp = scnprintf (next, size, "size = %d\n", ehci->periodic_size); |
| 506 | size -= temp; |
| 507 | next += temp; |
| 508 | |
| 509 | /* dump a snapshot of the periodic schedule. |
| 510 | * iso changes, interrupt usually doesn't. |
| 511 | */ |
| 512 | spin_lock_irqsave (&ehci->lock, flags); |
| 513 | for (i = 0; i < ehci->periodic_size; i++) { |
| 514 | p = ehci->pshadow [i]; |
| 515 | if (likely (!p.ptr)) |
| 516 | continue; |
| 517 | tag = Q_NEXT_TYPE (ehci->periodic [i]); |
| 518 | |
| 519 | temp = scnprintf (next, size, "%4d: ", i); |
| 520 | size -= temp; |
| 521 | next += temp; |
| 522 | |
| 523 | do { |
| 524 | switch (tag) { |
| 525 | case Q_TYPE_QH: |
| 526 | temp = scnprintf (next, size, " qh%d-%04x/%p", |
| 527 | p.qh->period, |
| 528 | le32_to_cpup (&p.qh->hw_info2) |
| 529 | /* uframe masks */ |
David Brownell | 7dedacf | 2005-08-04 18:06:41 -0700 | [diff] [blame] | 530 | & (QH_CMASK | QH_SMASK), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | p.qh); |
| 532 | size -= temp; |
| 533 | next += temp; |
| 534 | /* don't repeat what follows this qh */ |
| 535 | for (temp = 0; temp < seen_count; temp++) { |
| 536 | if (seen [temp].ptr != p.ptr) |
| 537 | continue; |
| 538 | if (p.qh->qh_next.ptr) |
| 539 | temp = scnprintf (next, size, |
| 540 | " ..."); |
| 541 | p.ptr = NULL; |
| 542 | break; |
| 543 | } |
| 544 | /* show more info the first time around */ |
| 545 | if (temp == seen_count && p.ptr) { |
| 546 | u32 scratch = le32_to_cpup ( |
| 547 | &p.qh->hw_info1); |
| 548 | struct ehci_qtd *qtd; |
| 549 | char *type = ""; |
| 550 | |
| 551 | /* count tds, get ep direction */ |
| 552 | temp = 0; |
| 553 | list_for_each_entry (qtd, |
| 554 | &p.qh->qtd_list, |
| 555 | qtd_list) { |
| 556 | temp++; |
| 557 | switch (0x03 & (le32_to_cpu ( |
| 558 | qtd->hw_token) >> 8)) { |
| 559 | case 0: type = "out"; continue; |
| 560 | case 1: type = "in"; continue; |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | temp = scnprintf (next, size, |
| 565 | " (%c%d ep%d%s " |
| 566 | "[%d/%d] q%d p%d)", |
| 567 | speed_char (scratch), |
| 568 | scratch & 0x007f, |
| 569 | (scratch >> 8) & 0x000f, type, |
| 570 | p.qh->usecs, p.qh->c_usecs, |
| 571 | temp, |
| 572 | 0x7ff & (scratch >> 16)); |
| 573 | |
| 574 | if (seen_count < DBG_SCHED_LIMIT) |
| 575 | seen [seen_count++].qh = p.qh; |
| 576 | } else |
| 577 | temp = 0; |
| 578 | if (p.qh) { |
| 579 | tag = Q_NEXT_TYPE (p.qh->hw_next); |
| 580 | p = p.qh->qh_next; |
| 581 | } |
| 582 | break; |
| 583 | case Q_TYPE_FSTN: |
| 584 | temp = scnprintf (next, size, |
| 585 | " fstn-%8x/%p", p.fstn->hw_prev, |
| 586 | p.fstn); |
| 587 | tag = Q_NEXT_TYPE (p.fstn->hw_next); |
| 588 | p = p.fstn->fstn_next; |
| 589 | break; |
| 590 | case Q_TYPE_ITD: |
| 591 | temp = scnprintf (next, size, |
| 592 | " itd/%p", p.itd); |
| 593 | tag = Q_NEXT_TYPE (p.itd->hw_next); |
| 594 | p = p.itd->itd_next; |
| 595 | break; |
| 596 | case Q_TYPE_SITD: |
| 597 | temp = scnprintf (next, size, |
| 598 | " sitd%d-%04x/%p", |
| 599 | p.sitd->stream->interval, |
| 600 | le32_to_cpup (&p.sitd->hw_uframe) |
| 601 | & 0x0000ffff, |
| 602 | p.sitd); |
| 603 | tag = Q_NEXT_TYPE (p.sitd->hw_next); |
| 604 | p = p.sitd->sitd_next; |
| 605 | break; |
| 606 | } |
| 607 | size -= temp; |
| 608 | next += temp; |
| 609 | } while (p.ptr); |
| 610 | |
| 611 | temp = scnprintf (next, size, "\n"); |
| 612 | size -= temp; |
| 613 | next += temp; |
| 614 | } |
| 615 | spin_unlock_irqrestore (&ehci->lock, flags); |
| 616 | kfree (seen); |
| 617 | |
| 618 | return PAGE_SIZE - size; |
| 619 | } |
| 620 | static CLASS_DEVICE_ATTR (periodic, S_IRUGO, show_periodic, NULL); |
| 621 | |
| 622 | #undef DBG_SCHED_LIMIT |
| 623 | |
| 624 | static ssize_t |
| 625 | show_registers (struct class_device *class_dev, char *buf) |
| 626 | { |
| 627 | struct usb_bus *bus; |
| 628 | struct usb_hcd *hcd; |
| 629 | struct ehci_hcd *ehci; |
| 630 | unsigned long flags; |
| 631 | unsigned temp, size, i; |
| 632 | char *next, scratch [80]; |
| 633 | static char fmt [] = "%*s\n"; |
| 634 | static char label [] = ""; |
| 635 | |
gregkh@suse.de | 8561b10 | 2005-03-15 15:10:13 -0800 | [diff] [blame] | 636 | bus = class_get_devdata(class_dev); |
Alan Stern | 1720058 | 2006-08-30 11:32:52 -0400 | [diff] [blame] | 637 | hcd = bus_to_hcd(bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | ehci = hcd_to_ehci (hcd); |
| 639 | next = buf; |
| 640 | size = PAGE_SIZE; |
| 641 | |
| 642 | spin_lock_irqsave (&ehci->lock, flags); |
| 643 | |
Pavel Machek | ca078ba | 2005-09-03 15:56:57 -0700 | [diff] [blame] | 644 | if (bus->controller->power.power_state.event) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | size = scnprintf (next, size, |
| 646 | "bus %s, device %s (driver " DRIVER_VERSION ")\n" |
David Brownell | d49d431 | 2005-05-07 13:21:50 -0700 | [diff] [blame] | 647 | "%s\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | "SUSPENDED (no register access)\n", |
| 649 | hcd->self.controller->bus->name, |
David Brownell | d49d431 | 2005-05-07 13:21:50 -0700 | [diff] [blame] | 650 | hcd->self.controller->bus_id, |
| 651 | hcd->product_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | goto done; |
| 653 | } |
| 654 | |
| 655 | /* Capability Registers */ |
| 656 | i = HC_VERSION(readl (&ehci->caps->hc_capbase)); |
| 657 | temp = scnprintf (next, size, |
| 658 | "bus %s, device %s (driver " DRIVER_VERSION ")\n" |
David Brownell | d49d431 | 2005-05-07 13:21:50 -0700 | [diff] [blame] | 659 | "%s\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | "EHCI %x.%02x, hcd state %d\n", |
| 661 | hcd->self.controller->bus->name, |
| 662 | hcd->self.controller->bus_id, |
David Brownell | d49d431 | 2005-05-07 13:21:50 -0700 | [diff] [blame] | 663 | hcd->product_desc, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | i >> 8, i & 0x0ff, hcd->state); |
| 665 | size -= temp; |
| 666 | next += temp; |
| 667 | |
David Brownell | d49d431 | 2005-05-07 13:21:50 -0700 | [diff] [blame] | 668 | #ifdef CONFIG_PCI |
| 669 | /* EHCI 0.96 and later may have "extended capabilities" */ |
| 670 | if (hcd->self.controller->bus == &pci_bus_type) { |
| 671 | struct pci_dev *pdev; |
| 672 | u32 offset, cap, cap2; |
| 673 | unsigned count = 256/4; |
| 674 | |
| 675 | pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); |
| 676 | offset = HCC_EXT_CAPS (readl (&ehci->caps->hcc_params)); |
| 677 | while (offset && count--) { |
| 678 | pci_read_config_dword (pdev, offset, &cap); |
| 679 | switch (cap & 0xff) { |
| 680 | case 1: |
| 681 | temp = scnprintf (next, size, |
| 682 | "ownership %08x%s%s\n", cap, |
| 683 | (cap & (1 << 24)) ? " linux" : "", |
| 684 | (cap & (1 << 16)) ? " firmware" : ""); |
| 685 | size -= temp; |
| 686 | next += temp; |
| 687 | |
| 688 | offset += 4; |
| 689 | pci_read_config_dword (pdev, offset, &cap2); |
| 690 | temp = scnprintf (next, size, |
| 691 | "SMI sts/enable 0x%08x\n", cap2); |
| 692 | size -= temp; |
| 693 | next += temp; |
| 694 | break; |
| 695 | case 0: /* illegal reserved capability */ |
| 696 | cap = 0; |
| 697 | /* FALLTHROUGH */ |
| 698 | default: /* unknown */ |
| 699 | break; |
| 700 | } |
| 701 | temp = (cap >> 8) & 0xff; |
| 702 | } |
| 703 | } |
| 704 | #endif |
| 705 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | // FIXME interpret both types of params |
| 707 | i = readl (&ehci->caps->hcs_params); |
| 708 | temp = scnprintf (next, size, "structural params 0x%08x\n", i); |
| 709 | size -= temp; |
| 710 | next += temp; |
| 711 | |
| 712 | i = readl (&ehci->caps->hcc_params); |
| 713 | temp = scnprintf (next, size, "capability params 0x%08x\n", i); |
| 714 | size -= temp; |
| 715 | next += temp; |
| 716 | |
| 717 | /* Operational Registers */ |
| 718 | temp = dbg_status_buf (scratch, sizeof scratch, label, |
| 719 | readl (&ehci->regs->status)); |
| 720 | temp = scnprintf (next, size, fmt, temp, scratch); |
| 721 | size -= temp; |
| 722 | next += temp; |
| 723 | |
| 724 | temp = dbg_command_buf (scratch, sizeof scratch, label, |
| 725 | readl (&ehci->regs->command)); |
| 726 | temp = scnprintf (next, size, fmt, temp, scratch); |
| 727 | size -= temp; |
| 728 | next += temp; |
| 729 | |
| 730 | temp = dbg_intr_buf (scratch, sizeof scratch, label, |
| 731 | readl (&ehci->regs->intr_enable)); |
| 732 | temp = scnprintf (next, size, fmt, temp, scratch); |
| 733 | size -= temp; |
| 734 | next += temp; |
| 735 | |
| 736 | temp = scnprintf (next, size, "uframe %04x\n", |
| 737 | readl (&ehci->regs->frame_index)); |
| 738 | size -= temp; |
| 739 | next += temp; |
| 740 | |
David Brownell | d49d431 | 2005-05-07 13:21:50 -0700 | [diff] [blame] | 741 | for (i = 1; i <= HCS_N_PORTS (ehci->hcs_params); i++) { |
| 742 | temp = dbg_port_buf (scratch, sizeof scratch, label, i, |
| 743 | readl (&ehci->regs->port_status [i - 1])); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | temp = scnprintf (next, size, fmt, temp, scratch); |
| 745 | size -= temp; |
| 746 | next += temp; |
David Brownell | d49d431 | 2005-05-07 13:21:50 -0700 | [diff] [blame] | 747 | if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) { |
| 748 | temp = scnprintf (next, size, |
| 749 | " debug control %08x\n", |
| 750 | readl (&ehci->debug->control)); |
| 751 | size -= temp; |
| 752 | next += temp; |
| 753 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | if (ehci->reclaim) { |
Greg Kroah-Hartman | 64f8979 | 2006-10-17 13:57:18 -0700 | [diff] [blame] | 757 | temp = scnprintf (next, size, "reclaim qh %p%s\n", |
| 758 | ehci->reclaim, |
| 759 | ehci->reclaim_ready ? " ready" : ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | size -= temp; |
| 761 | next += temp; |
| 762 | } |
| 763 | |
| 764 | #ifdef EHCI_STATS |
| 765 | temp = scnprintf (next, size, |
| 766 | "irq normal %ld err %ld reclaim %ld (lost %ld)\n", |
| 767 | ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim, |
| 768 | ehci->stats.lost_iaa); |
| 769 | size -= temp; |
| 770 | next += temp; |
| 771 | |
| 772 | temp = scnprintf (next, size, "complete %ld unlink %ld\n", |
| 773 | ehci->stats.complete, ehci->stats.unlink); |
| 774 | size -= temp; |
| 775 | next += temp; |
| 776 | #endif |
| 777 | |
| 778 | done: |
| 779 | spin_unlock_irqrestore (&ehci->lock, flags); |
| 780 | |
| 781 | return PAGE_SIZE - size; |
| 782 | } |
| 783 | static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL); |
| 784 | |
| 785 | static inline void create_debug_files (struct ehci_hcd *ehci) |
| 786 | { |
gregkh@suse.de | 8561b10 | 2005-03-15 15:10:13 -0800 | [diff] [blame] | 787 | struct class_device *cldev = ehci_to_hcd(ehci)->self.class_dev; |
Greg Kroah-Hartman | 1ee9521 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 788 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | |
Greg Kroah-Hartman | 1ee9521 | 2006-08-28 11:43:25 -0700 | [diff] [blame] | 790 | retval = class_device_create_file(cldev, &class_device_attr_async); |
| 791 | retval = class_device_create_file(cldev, &class_device_attr_periodic); |
| 792 | retval = class_device_create_file(cldev, &class_device_attr_registers); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | } |
| 794 | |
| 795 | static inline void remove_debug_files (struct ehci_hcd *ehci) |
| 796 | { |
gregkh@suse.de | 8561b10 | 2005-03-15 15:10:13 -0800 | [diff] [blame] | 797 | struct class_device *cldev = ehci_to_hcd(ehci)->self.class_dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | |
| 799 | class_device_remove_file(cldev, &class_device_attr_async); |
| 800 | class_device_remove_file(cldev, &class_device_attr_periodic); |
| 801 | class_device_remove_file(cldev, &class_device_attr_registers); |
| 802 | } |
| 803 | |
| 804 | #endif /* STUB_DEBUG_FILES */ |
| 805 | |