target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c

   1 /*
   2  * ADM5120 HCD (Host Controller Driver) for USB
   3  *
   4  * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
   5  *
   6  * This file was derived from: drivers/usb/host/ohci-dbg.c
   7  *   (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
   8  *   (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
   9  *
  10  * This file is licenced under the GPL.
  11  */
  12
  13 /*-------------------------------------------------------------------------*/
  14
  15 static inline char *ed_typestring(int ed_type)
  16 {
  17         switch (ed_type) {
  18         case PIPE_CONTROL:
  19                 return "ctrl";
  20         case PIPE_BULK:
  21                 return "bulk";
  22         case PIPE_INTERRUPT:
  23                 return "intr";
  24         case PIPE_ISOCHRONOUS:
  25                 return "isoc";
  26         }
  27         return "(bad ed_type)";
  28 }
  29
  30 static inline char *ed_statestring(int state)
  31 {
  32         switch (state) {
  33         case ED_IDLE:
  34                 return "IDLE";
  35         case ED_UNLINK:
  36                 return "UNLINK";
  37         case ED_OPER:
  38                 return "OPER";
  39         }
  40         return "?STATE";
  41 }
  42
  43 static inline char *pipestring(int pipe)
  44 {
  45         return ed_typestring(usb_pipetype(pipe));
  46 }
  47
  48 static inline char *td_pidstring(u32 info)
  49 {
  50         switch (info & TD_DP) {
  51         case TD_DP_SETUP:
  52                 return "SETUP";
  53         case TD_DP_IN:
  54                 return "IN";
  55         case TD_DP_OUT:
  56                 return "OUT";
  57         }
  58         return "?PID";
  59 }
  60
  61 static inline char *td_togglestring(u32 info)
  62 {
  63         switch (info & TD_T) {
  64         case TD_T_DATA0:
  65                 return "DATA0";
  66         case TD_T_DATA1:
  67                 return "DATA1";
  68         case TD_T_CARRY:
  69                 return "CARRY";
  70         }
  71         return "?TOGGLE";
  72 }
  73
  74 /*-------------------------------------------------------------------------*/
  75
  76 #ifdef DEBUG
  77
  78 /* debug| print the main components of an URB
  79  * small: 0) header + data packets 1) just header
  80  */
  81 static void __attribute__((unused))
  82 urb_print(struct admhcd *ahcd, struct urb *urb, char *str, int small)
  83 {
  84         unsigned int pipe = urb->pipe;
  85
  86         if (!urb->dev || !urb->dev->bus) {
  87                 admhc_dbg(ahcd, "%s URB: no dev", str);
  88                 return;
  89         }
  90
  91 #ifndef ADMHC_VERBOSE_DEBUG
  92         if (urb->status != 0)
  93 #endif
  94         admhc_dbg(ahcd, "URB-%s %p dev=%d ep=%d%s-%s flags=%x len=%d/%d "
  95                         "stat=%d\n",
  96                         str,
  97                         urb,
  98                         usb_pipedevice (pipe),
  99                         usb_pipeendpoint (pipe),
 100                         usb_pipeout(pipe)? "out" : "in",
 101                         pipestring(pipe),
 102                         urb->transfer_flags,
 103                         urb->actual_length,
 104                         urb->transfer_buffer_length,
 105                         urb->status);
 106
 107 #ifdef  ADMHC_VERBOSE_DEBUG
 108         if (!small) {
 109                 int i, len;
 110
 111                 if (usb_pipecontrol(pipe)) {
 112                         admhc_dbg(ahcd, "setup(8):");
 113                         for (i = 0; i < 8 ; i++)
 114                                 printk (" %02x", ((__u8 *) urb->setup_packet) [i]);
 115                         printk ("\n");
 116                 }
 117                 if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) {
 118                         admhc_dbg(ahcd, "data(%d/%d):",
 119                                 urb->actual_length,
 120                                 urb->transfer_buffer_length);
 121                         len = usb_pipeout(pipe)?
 122                                                 urb->transfer_buffer_length: urb->actual_length;
 123                         for (i = 0; i < 16 && i < len; i++)
 124                                 printk(" %02x", ((__u8 *)urb->transfer_buffer)[i]);
 125                         printk("%s stat:%d\n", i < len? "...": "", urb->status);
 126                 }
 127         }
 128 #endif /* ADMHC_VERBOSE_DEBUG */
 129 }
 130
 131 #define admhc_dbg_sw(ahcd, next, size, format, arg...) \
 132         do { \
 133         if (next) { \
 134                 unsigned s_len; \
 135                 s_len = scnprintf(*next, *size, format, ## arg ); \
 136                 *size -= s_len; *next += s_len; \
 137         } else \
 138                 admhc_dbg(ahcd,format, ## arg ); \
 139         } while (0);
 140
 141
 142 static void admhc_dump_intr_mask(struct admhcd *ahcd, char *label, u32 mask,
 143                 char **next, unsigned *size)
 144 {
 145         admhc_dbg_sw(ahcd, next, size, "%s 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n",
 146                 label,
 147                 mask,
 148                 (mask & ADMHC_INTR_INTA) ? " INTA" : "",
 149                 (mask & ADMHC_INTR_FATI) ? " FATI" : "",
 150                 (mask & ADMHC_INTR_SWI) ? " SWI" : "",
 151                 (mask & ADMHC_INTR_TDC) ? " TDC" : "",
 152                 (mask & ADMHC_INTR_FNO) ? " FNO" : "",
 153                 (mask & ADMHC_INTR_SO) ? " SO" : "",
 154                 (mask & ADMHC_INTR_INSM) ? " INSM" : "",
 155                 (mask & ADMHC_INTR_BABI) ? " BABI" : "",
 156                 (mask & ADMHC_INTR_7) ? " !7!" : "",
 157                 (mask & ADMHC_INTR_6) ? " !6!" : "",
 158                 (mask & ADMHC_INTR_RESI) ? " RESI" : "",
 159                 (mask & ADMHC_INTR_SOFI) ? " SOFI" : ""
 160                 );
 161 }
 162
 163 static void maybe_print_eds(struct admhcd *ahcd, char *label, u32 value,
 164                 char **next, unsigned *size)
 165 {
 166         if (value)
 167                 admhc_dbg_sw(ahcd, next, size, "%s %08x\n", label, value);
 168 }
 169
 170 static char *buss2string (int state)
 171 {
 172         switch (state) {
 173         case ADMHC_BUSS_RESET:
 174                 return "reset";
 175         case ADMHC_BUSS_RESUME:
 176                 return "resume";
 177         case ADMHC_BUSS_OPER:
 178                 return "operational";
 179         case ADMHC_BUSS_SUSPEND:
 180                 return "suspend";
 181         }
 182         return "?state";
 183 }
 184
 185 static void
 186 admhc_dump_status(struct admhcd *ahcd, char **next, unsigned *size)
 187 {
 188         struct admhcd_regs __iomem *regs = ahcd->regs;
 189         u32                     temp;
 190
 191         temp = admhc_readl(ahcd, &regs->gencontrol);
 192         admhc_dbg_sw(ahcd, next, size,
 193                 "gencontrol 0x%08x%s%s%s%s\n",
 194                 temp,
 195                 (temp & ADMHC_CTRL_UHFE) ? " UHFE" : "",
 196                 (temp & ADMHC_CTRL_SIR) ? " SIR" : "",
 197                 (temp & ADMHC_CTRL_DMAA) ? " DMAA" : "",
 198                 (temp & ADMHC_CTRL_SR) ? " SR" : ""
 199                 );
 200
 201         temp = admhc_readl(ahcd, &regs->host_control);
 202         admhc_dbg_sw(ahcd, next, size,
 203                 "host_control 0x%08x BUSS=%s%s\n",
 204                 temp,
 205                 buss2string(temp & ADMHC_HC_BUSS),
 206                 (temp & ADMHC_HC_DMAE) ? " DMAE" : ""
 207                 );
 208
 209         admhc_dump_intr_mask(ahcd, "int_status",
 210                         admhc_readl(ahcd, &regs->int_status),
 211                         next, size);
 212         admhc_dump_intr_mask(ahcd, "int_enable",
 213                         admhc_readl(ahcd, &regs->int_enable),
 214                         next, size);
 215
 216         maybe_print_eds(ahcd, "hosthead",
 217                         admhc_readl(ahcd, &regs->hosthead), next, size);
 218 }
 219
 220 #define dbg_port_sw(hc,num,value,next,size) \
 221         admhc_dbg_sw(hc, next, size, \
 222                 "portstatus [%d] " \
 223                 "0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \
 224                 num, temp, \
 225                 (temp & ADMHC_PS_PRSC) ? " PRSC" : "", \
 226                 (temp & ADMHC_PS_OCIC) ? " OCIC" : "", \
 227                 (temp & ADMHC_PS_PSSC) ? " PSSC" : "", \
 228                 (temp & ADMHC_PS_PESC) ? " PESC" : "", \
 229                 (temp & ADMHC_PS_CSC) ? " CSC" : "", \
 230                 \
 231                 (temp & ADMHC_PS_LSDA) ? " LSDA" : "", \
 232                 (temp & ADMHC_PS_PPS) ? " PPS" : "", \
 233                 (temp & ADMHC_PS_PRS) ? " PRS" : "", \
 234                 (temp & ADMHC_PS_POCI) ? " POCI" : "", \
 235                 (temp & ADMHC_PS_PSS) ? " PSS" : "", \
 236                 \
 237                 (temp & ADMHC_PS_PES) ? " PES" : "", \
 238                 (temp & ADMHC_PS_CCS) ? " CCS" : "" \
 239                 );
 240
 241
 242 static void
 243 admhc_dump_roothub(
 244         struct admhcd *ahcd,
 245         int verbose,
 246         char **next,
 247         unsigned *size)
 248 {
 249         u32                     temp, i;
 250
 251         temp = admhc_read_rhdesc(ahcd);
 252         if (temp == ~(u32)0)
 253                 return;
 254
 255         if (verbose) {
 256                 admhc_dbg_sw(ahcd, next, size,
 257                         "rhdesc %08x%s%s%s%s%s%s PPCM=%02x%s%s%s%s NUMP=%d(%d)\n",
 258                         temp,
 259                         (temp & ADMHC_RH_CRWE) ? " CRWE" : "",
 260                         (temp & ADMHC_RH_OCIC) ? " OCIC" : "",
 261                         (temp & ADMHC_RH_LPSC) ? " LPSC" : "",
 262                         (temp & ADMHC_RH_LPSC) ? " DRWE" : "",
 263                         (temp & ADMHC_RH_LPSC) ? " OCI" : "",
 264                         (temp & ADMHC_RH_LPSC) ? " LPS" : "",
 265                         ((temp & ADMHC_RH_PPCM) >> 16),
 266                         (temp & ADMHC_RH_NOCP) ? " NOCP" : "",
 267                         (temp & ADMHC_RH_OCPM) ? " OCPM" : "",
 268                         (temp & ADMHC_RH_NPS) ? " NPS" : "",
 269                         (temp & ADMHC_RH_PSM) ? " PSM" : "",
 270                         (temp & ADMHC_RH_NUMP), ahcd->num_ports
 271                         );
 272         }
 273
 274         for (i = 0; i < ahcd->num_ports; i++) {
 275                 temp = admhc_read_portstatus(ahcd, i);
 276                 dbg_port_sw(ahcd, i, temp, next, size);
 277         }
 278 }
 279
 280 static void admhc_dump(struct admhcd *ahcd, int verbose)
 281 {
 282         admhc_dbg(ahcd, "ADMHC ahcd state\n");
 283
 284         /* dumps some of the state we know about */
 285         admhc_dump_status(ahcd, NULL, NULL);
 286         admhc_dbg(ahcd,"current frame #%04x\n",
 287                 admhc_frame_no(ahcd));
 288
 289         admhc_dump_roothub(ahcd, verbose, NULL, NULL);
 290 }
 291
 292 static const char data0[] = "DATA0";
 293 static const char data1[] = "DATA1";
 294
 295 static void admhc_dump_td(const struct admhcd *ahcd, const char *label,
 296                 const struct td *td)
 297 {
 298         u32     tmp;
 299
 300         admhc_dbg(ahcd, "%s td %p; urb %p index %d; hwNextTD %08x\n",
 301                 label, td,
 302                 td->urb, td->index,
 303                 hc32_to_cpup(ahcd, &td->hwNextTD));
 304
 305         tmp = hc32_to_cpup(ahcd, &td->hwINFO);
 306         admhc_dbg(ahcd, "     status %08x%s CC=%x EC=%d %s %s ISI=%x FN=%x\n",
 307                 tmp,
 308                 (tmp & TD_OWN) ? " OWN" : "",
 309                 TD_CC_GET(tmp),
 310                 TD_EC_GET(tmp),
 311                 td_togglestring(tmp),
 312                 td_pidstring(tmp),
 313                 TD_ISI_GET(tmp),
 314                 TD_FN_GET(tmp));
 315
 316         tmp = hc32_to_cpup(ahcd, &td->hwCBL);
 317         admhc_dbg(ahcd, "     dbp %08x; cbl %08x; LEN=%d%s\n",
 318                 hc32_to_cpup(ahcd, &td->hwDBP),
 319                 tmp,
 320                 TD_BL_GET(tmp),
 321                 (tmp & TD_IE) ? " IE" : "");
 322 }
 323
 324 /* caller MUST own hcd spinlock if verbose is set! */
 325 static void __attribute__((unused))
 326 admhc_dump_ed(const struct admhcd *ahcd, const char *label,
 327                 const struct ed *ed, int verbose)
 328 {
 329         u32 tmp = hc32_to_cpu(ahcd, ed->hwINFO);
 330
 331         admhc_dbg(ahcd, "%s ed %p %s type %s; next ed %08x\n",
 332                 label,
 333                 ed, ed_statestring(ed->state), ed_typestring(ed->type),
 334                 hc32_to_cpup(ahcd, &ed->hwNextED));
 335
 336         admhc_dbg(ahcd, "  info %08x MAX=%d%s%s%s%s EP=%d DEV=%d\n", tmp,
 337                 ED_MPS_GET(tmp),
 338                 (tmp & ED_ISO) ? " ISO" : "",
 339                 (tmp & ED_SKIP) ? " SKIP" : "",
 340                 (tmp & ED_SPEED_FULL) ? " FULL" : " LOW",
 341                 (tmp & ED_INT) ? " INT" : "",
 342                 ED_EN_GET(tmp),
 343                 ED_FA_GET(tmp));
 344
 345         tmp = hc32_to_cpup(ahcd, &ed->hwHeadP);
 346         admhc_dbg(ahcd, "  tds: head %08x tail %08x %s%s%s\n",
 347                 tmp & TD_MASK,
 348                 hc32_to_cpup (ahcd, &ed->hwTailP),
 349                 (tmp & ED_C) ? data1 : data0,
 350                 (tmp & ED_H) ? " HALT" : "",
 351                 verbose ? " td list follows" : " (not listing)");
 352
 353         if (verbose) {
 354                 struct list_head        *tmp;
 355
 356                 /* use ed->td_list because HC concurrently modifies
 357                  * hwNextTD as it accumulates ed_donelist.
 358                  */
 359                 list_for_each(tmp, &ed->td_list) {
 360                         struct td               *td;
 361                         td = list_entry(tmp, struct td, td_list);
 362                         admhc_dump_td (ahcd, "  ->", td);
 363                 }
 364         }
 365 }
 366
 367 #else /* ifdef DEBUG */
 368
 369 static inline void urb_print(struct admhcd *ahcd, struct urb * urb, char * str,
 370         int small) {}
 371 static inline void admhc_dump_ed(const struct admhcd *ahcd, const char *label,
 372         const struct ed *ed, int verbose) {}
 373 static inline void admhc_dump_td(const struct admhcd *ahcd, const char *label,
 374         const struct td *td) {}
 375 static inline void admhc_dump(struct admhcd *ahcd, int verbose) {}
 376
 377 #undef ADMHC_VERBOSE_DEBUG
 378
 379 #endif /* DEBUG */
 380
 381 /*-------------------------------------------------------------------------*/
 382
 383 #ifdef STUB_DEBUG_FILES
 384
 385 static inline void create_debug_files(struct admhcd *bus) { }
 386 static inline void remove_debug_files(struct admhcd *bus) { }
 387
 388 #else
 389
 390 static ssize_t
 391 show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed)
 392 {
 393         unsigned                temp, size = count;
 394
 395         if (!ed)
 396                 return 0;
 397
 398         /* dump a snapshot of the bulk or control schedule */
 399         while (ed) {
 400                 u32 info = hc32_to_cpu(ahcd, ed->hwINFO);
 401                 u32 headp = hc32_to_cpu(ahcd, ed->hwHeadP);
 402                 u32 tailp = hc32_to_cpu(ahcd, ed->hwTailP);
 403                 struct list_head *entry;
 404                 struct td       *td;
 405
 406                 temp = scnprintf(buf, size,
 407                         "ed/%p %s %s %cs dev%d ep%d %s%smax %d %08x%s%s %s"
 408                         " h:%08x t:%08x",
 409                         ed,
 410                         ed_statestring(ed->state),
 411                         ed_typestring (ed->type),
 412                         (info & ED_SPEED_FULL) ? 'f' : 'l',
 413                         info & ED_FA_MASK,
 414                         (info >> ED_EN_SHIFT) & ED_EN_MASK,
 415                         (info & ED_INT) ? "INT " : "",
 416                         (info & ED_ISO) ? "ISO " : "",
 417                         (info >> ED_MPS_SHIFT) & ED_MPS_MASK ,
 418                         info,
 419                         (info & ED_SKIP) ? " S" : "",
 420                         (headp & ED_H) ? " H" : "",
 421                         (headp & ED_C) ? data1 : data0,
 422                         headp & ED_MASK,tailp);
 423                 size -= temp;
 424                 buf += temp;
 425
 426                 list_for_each(entry, &ed->td_list) {
 427                         u32             dbp, cbl;
 428
 429                         td = list_entry(entry, struct td, td_list);
 430                         info = hc32_to_cpup (ahcd, &td->hwINFO);
 431                         dbp = hc32_to_cpup (ahcd, &td->hwDBP);
 432                         cbl = hc32_to_cpup (ahcd, &td->hwCBL);
 433
 434                         temp = scnprintf(buf, size,
 435                                 "\n\ttd/%p %s %d %s%scc=%x urb %p (%08x,%08x)",
 436                                 td,
 437                                 td_pidstring(info),
 438                                 TD_BL_GET(cbl),
 439                                 (info & TD_OWN) ? "" : "DONE ",
 440                                 (cbl & TD_IE) ? "IE " : "",
 441                                 TD_CC_GET (info), td->urb, info, cbl);
 442                         size -= temp;
 443                         buf += temp;
 444                 }
 445
 446                 temp = scnprintf(buf, size, "\n");
 447                 size -= temp;
 448                 buf += temp;
 449
 450                 ed = ed->ed_next;
 451         }
 452         return count - size;
 453 }
 454
 455 static ssize_t
 456 show_async(struct class_device *class_dev, char *buf)
 457 {
 458         struct usb_bus          *bus;
 459         struct usb_hcd          *hcd;
 460         struct admhcd           *ahcd;
 461         size_t                  temp;
 462         unsigned long           flags;
 463
 464         bus = class_get_devdata(class_dev);
 465         hcd = bus_to_hcd(bus);
 466         ahcd = hcd_to_admhcd(hcd);
 467
 468         /* display control and bulk lists together, for simplicity */
 469         spin_lock_irqsave(&ahcd->lock, flags);
 470         temp = show_list(ahcd, buf, PAGE_SIZE, ahcd->ed_head);
 471         spin_unlock_irqrestore(&ahcd->lock, flags);
 472
 473         return temp;
 474 }
 475 static CLASS_DEVICE_ATTR(async, S_IRUGO, show_async, NULL);
 476
 477
 478 #define DBG_SCHED_LIMIT 64
 479
 480 static ssize_t
 481 show_periodic(struct class_device *class_dev, char *buf)
 482 {
 483         struct usb_bus          *bus;
 484         struct usb_hcd          *hcd;
 485         struct admhcd           *ahcd;
 486         struct ed               **seen, *ed;
 487         unsigned long           flags;
 488         unsigned                temp, size, seen_count;
 489         char                    *next;
 490         unsigned                i;
 491
 492         if (!(seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
 493                 return 0;
 494         seen_count = 0;
 495
 496         bus = class_get_devdata(class_dev);
 497         hcd = bus_to_hcd(bus);
 498         ahcd = hcd_to_admhcd(hcd);
 499         next = buf;
 500         size = PAGE_SIZE;
 501
 502         temp = scnprintf(next, size, "size = %d\n", NUM_INTS);
 503         size -= temp;
 504         next += temp;
 505
 506         /* dump a snapshot of the periodic schedule (and load) */
 507         spin_lock_irqsave(&ahcd->lock, flags);
 508         for (i = 0; i < NUM_INTS; i++) {
 509                 if (!(ed = ahcd->periodic [i]))
 510                         continue;
 511
 512                 temp = scnprintf(next, size, "%2d [%3d]:", i, ahcd->load [i]);
 513                 size -= temp;
 514                 next += temp;
 515
 516                 do {
 517                         temp = scnprintf(next, size, " ed%d/%p",
 518                                 ed->interval, ed);
 519                         size -= temp;
 520                         next += temp;
 521                         for (temp = 0; temp < seen_count; temp++) {
 522                                 if (seen [temp] == ed)
 523                                         break;
 524                         }
 525
 526                         /* show more info the first time around */
 527                         if (temp == seen_count) {
 528                                 u32     info = hc32_to_cpu (ahcd, ed->hwINFO);
 529                                 struct list_head        *entry;
 530                                 unsigned                qlen = 0;
 531
 532                                 /* qlen measured here in TDs, not urbs */
 533                                 list_for_each (entry, &ed->td_list)
 534                                         qlen++;
 535                                 temp = scnprintf(next, size,
 536                                         " (%cs dev%d ep%d%s qlen %u"
 537                                         " max %d %08x%s%s)",
 538                                         (info & ED_SPEED_FULL) ? 'f' : 'l',
 539                                         ED_FA_GET(info),
 540                                         ED_EN_GET(info),
 541                                         (info & ED_ISO) ? "iso" : "int",
 542                                         qlen,
 543                                         ED_MPS_GET(info),
 544                                         info,
 545                                         (info & ED_SKIP) ? " K" : "",
 546                                         (ed->hwHeadP &
 547                                                 cpu_to_hc32(ahcd, ED_H)) ?
 548                                                         " H" : "");
 549                                 size -= temp;
 550                                 next += temp;
 551
 552                                 if (seen_count < DBG_SCHED_LIMIT)
 553                                         seen [seen_count++] = ed;
 554
 555                                 ed = ed->ed_next;
 556
 557                         } else {
 558                                 /* we've seen it and what's after */
 559                                 temp = 0;
 560                                 ed = NULL;
 561                         }
 562
 563                 } while (ed);
 564
 565                 temp = scnprintf(next, size, "\n");
 566                 size -= temp;
 567                 next += temp;
 568         }
 569         spin_unlock_irqrestore(&ahcd->lock, flags);
 570         kfree (seen);
 571
 572         return PAGE_SIZE - size;
 573 }
 574 static CLASS_DEVICE_ATTR(periodic, S_IRUGO, show_periodic, NULL);
 575
 576
 577 #undef DBG_SCHED_LIMIT
 578
 579 static ssize_t
 580 show_registers(struct class_device *class_dev, char *buf)
 581 {
 582         struct usb_bus          *bus;
 583         struct usb_hcd          *hcd;
 584         struct admhcd           *ahcd;
 585         struct admhcd_regs __iomem *regs;
 586         unsigned long           flags;
 587         unsigned                temp, size;
 588         char                    *next;
 589         u32                     rdata;
 590
 591         bus = class_get_devdata(class_dev);
 592         hcd = bus_to_hcd(bus);
 593         ahcd = hcd_to_admhcd(hcd);
 594         regs = ahcd->regs;
 595         next = buf;
 596         size = PAGE_SIZE;
 597
 598         spin_lock_irqsave(&ahcd->lock, flags);
 599
 600         /* dump driver info, then registers in spec order */
 601
 602         admhc_dbg_sw(ahcd, &next, &size,
 603                 "bus %s, device %s\n"
 604                 "%s\n"
 605                 "%s version " DRIVER_VERSION "\n",
 606                 hcd->self.controller->bus->name,
 607                 hcd->self.controller->bus_id,
 608                 hcd->product_desc,
 609                 hcd_name);
 610
 611         if (bus->controller->power.power_state.event) {
 612                 size -= scnprintf(next, size,
 613                         "SUSPENDED (no register access)\n");
 614                 goto done;
 615         }
 616
 617         admhc_dump_status(ahcd, &next, &size);
 618
 619         /* other registers mostly affect frame timings */
 620         rdata = admhc_readl(ahcd, &regs->fminterval);
 621         temp = scnprintf(next, size,
 622                         "fmintvl 0x%08x %sFSLDP=0x%04x FI=0x%04x\n",
 623                         rdata, (rdata & ADMHC_SFI_FIT) ? "FIT " : "",
 624                         (rdata >> ADMHC_SFI_FSLDP_SHIFT) & ADMHC_SFI_FSLDP_MASK,
 625                         rdata  & ADMHC_SFI_FI_MASK);
 626         size -= temp;
 627         next += temp;
 628
 629         rdata = admhc_readl(ahcd, &regs->fmnumber);
 630         temp = scnprintf(next, size, "fmnumber 0x%08x %sFR=0x%04x FN=%04x\n",
 631                         rdata, (rdata & ADMHC_SFN_FRT) ? "FRT " : "",
 632                         (rdata >> ADMHC_SFN_FR_SHIFT) & ADMHC_SFN_FR_MASK,
 633                         rdata  & ADMHC_SFN_FN_MASK);
 634         size -= temp;
 635         next += temp;
 636
 637         /* TODO: use predefined bitmask */
 638         rdata = admhc_readl(ahcd, &regs->lsthresh);
 639         temp = scnprintf(next, size, "lsthresh 0x%04x\n",
 640                         rdata & 0x3fff);
 641         size -= temp;
 642         next += temp;
 643
 644         temp = scnprintf(next, size, "hub poll timer: %s\n",
 645                         admhcd_to_hcd(ahcd)->poll_rh ? "ON" : "OFF");
 646         size -= temp;
 647         next += temp;
 648
 649         /* roothub */
 650         admhc_dump_roothub(ahcd, 1, &next, &size);
 651
 652 done:
 653         spin_unlock_irqrestore(&ahcd->lock, flags);
 654         return PAGE_SIZE - size;
 655 }
 656 static CLASS_DEVICE_ATTR(registers, S_IRUGO, show_registers, NULL);
 657
 658
 659 static inline void create_debug_files (struct admhcd *ahcd)
 660 {
 661         struct class_device *cldev = admhcd_to_hcd(ahcd)->self.class_dev;
 662         int retval;
 663
 664         retval = class_device_create_file(cldev, &class_device_attr_async);
 665         retval = class_device_create_file(cldev, &class_device_attr_periodic);
 666         retval = class_device_create_file(cldev, &class_device_attr_registers);
 667         admhc_dbg(ahcd, "created debug files\n");
 668 }
 669
 670 static inline void remove_debug_files (struct admhcd *ahcd)
 671 {
 672         struct class_device *cldev = admhcd_to_hcd(ahcd)->self.class_dev;
 673
 674         class_device_remove_file(cldev, &class_device_attr_async);
 675         class_device_remove_file(cldev, &class_device_attr_periodic);
 676         class_device_remove_file(cldev, &class_device_attr_registers);
 677 }
 678
 679 #endif
 680
 681 /*-------------------------------------------------------------------------*/