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