sys/dev/firewire/firewire.c

   1 /*-
   2  * Copyright (c) 2003 Hidetoshi Shimokawa
   3  * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the acknowledgement as bellow:
  16  *
  17  *    This product includes software developed by K. Kobayashi and H. Shimokawa
  18  *
  19  * 4. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  25  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  30  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/types.h>
  41
  42 #include <sys/jail.h>
  43 #include <sys/kernel.h>
  44 #include <sys/module.h>
  45 #include <sys/malloc.h>
  46 #include <sys/conf.h>
  47 #include <sys/sysctl.h>
  48 #include <sys/kthread.h>
  49
  50 #include <sys/kdb.h>
  51 #include <sys/bus.h>            /* used by smbus and newbus */
  52 #include <machine/bus.h>
  53
  54 #include <dev/firewire/firewire.h>
  55 #include <dev/firewire/firewirereg.h>
  56 #include <dev/firewire/fwmem.h>
  57 #include <dev/firewire/iec13213.h>
  58 #include <dev/firewire/iec68113.h>
  59
  60 struct crom_src_buf {
  61         struct crom_src src;
  62         struct crom_chunk root;
  63         struct crom_chunk vendor;
  64         struct crom_chunk hw;
  65 };
  66
  67 int firewire_debug = 0, try_bmr = 1, hold_count = 0;
  68 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  69         "FireWire driver debug flag");
  70 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
  71 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  72         "Try to be a bus manager");
  73 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  74         "Number of count of bus resets for removing lost device information");
  75
  76 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  77 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  78
  79 #define FW_MAXASYRTY 4
  80
  81 devclass_t firewire_devclass;
  82
  83 static void firewire_identify(driver_t *, device_t);
  84 static int firewire_probe(device_t);
  85 static int firewire_attach(device_t);
  86 static int firewire_detach(device_t);
  87 static int firewire_resume(device_t);
  88 static void firewire_xfer_timeout(void *, int);
  89 static device_t firewire_add_child(device_t, u_int, const char *, int);
  90 static void fw_try_bmr(void *);
  91 static void fw_try_bmr_callback(struct fw_xfer *);
  92 static void fw_asystart(struct fw_xfer *);
  93 static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *);
  94 static void fw_bus_probe(void *);
  95 static void fw_attach_dev(struct firewire_comm *);
  96 static void fw_bus_probe_thread(void *);
  97 #ifdef FW_VMACCESS
  98 static void fw_vmaccess (struct fw_xfer *);
  99 #endif
 100 static int fw_bmr (struct firewire_comm *);
 101 static void fw_dump_hdr(struct fw_pkt *, char *);
 102
 103 static device_method_t firewire_methods[] = {
 104         /* Device interface */
 105         DEVMETHOD(device_identify,      firewire_identify),
 106         DEVMETHOD(device_probe,         firewire_probe),
 107         DEVMETHOD(device_attach,        firewire_attach),
 108         DEVMETHOD(device_detach,        firewire_detach),
 109         DEVMETHOD(device_suspend,       bus_generic_suspend),
 110         DEVMETHOD(device_resume,        firewire_resume),
 111         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 112
 113         /* Bus interface */
 114         DEVMETHOD(bus_add_child,        firewire_add_child),
 115
 116         DEVMETHOD_END
 117 };
 118
 119 char *linkspeed[] = {
 120         "S100", "S200", "S400", "S800",
 121         "S1600", "S3200", "undef", "undef"
 122 };
 123
 124 static char *tcode_str[] = {
 125         "WREQQ", "WREQB", "WRES",   "undef",
 126         "RREQQ", "RREQB", "RRESQ",  "RRESB",
 127         "CYCS",  "LREQ",  "STREAM", "LRES",
 128         "undef", "undef", "PHY",    "undef"
 129 };
 130
 131 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
 132 #define MAX_GAPHOP 15
 133 u_int gap_cnt[] = { 5,  5,  7,  8, 10, 13, 16, 18,
 134                    21, 24, 26, 29, 32, 35, 37, 40};
 135
 136 static driver_t firewire_driver = {
 137         "firewire",
 138         firewire_methods,
 139         sizeof(struct firewire_softc),
 140 };
 141
 142 /*
 143  * Lookup fwdev by node id.
 144  */
 145 struct fw_device *
 146 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
 147 {
 148         struct fw_device *fwdev;
 149
 150         FW_GLOCK(fc);
 151         STAILQ_FOREACH(fwdev, &fc->devices, link)
 152                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 153                         break;
 154         FW_GUNLOCK(fc);
 155
 156         return fwdev;
 157 }
 158
 159 /*
 160  * Lookup fwdev by EUI64.
 161  */
 162 struct fw_device *
 163 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
 164 {
 165         struct fw_device *fwdev;
 166
 167         FW_GLOCK(fc);
 168         STAILQ_FOREACH(fwdev, &fc->devices, link)
 169                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 170                         break;
 171         FW_GUNLOCK(fc);
 172
 173         if (fwdev == NULL)
 174                 return NULL;
 175         if (fwdev->status == FWDEVINVAL)
 176                 return NULL;
 177         return fwdev;
 178 }
 179
 180 /*
 181  * Async. request procedure for userland application.
 182  */
 183 int
 184 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
 185 {
 186         int err = 0;
 187         struct fw_xferq *xferq;
 188         int len;
 189         struct fw_pkt *fp;
 190         int tcode;
 191         struct tcode_info *info;
 192
 193         if (xfer == NULL)
 194                 return EINVAL;
 195         if (xfer->hand == NULL) {
 196                 printf("hand == NULL\n");
 197                 return EINVAL;
 198         }
 199         fp = &xfer->send.hdr;
 200
 201         tcode = fp->mode.common.tcode & 0xf;
 202         info = &fc->tcode[tcode];
 203         if (info->flag == 0) {
 204                 printf("invalid tcode=%x\n", tcode);
 205                 return EINVAL;
 206         }
 207
 208         /* XXX allow bus explore packets only after bus rest */
 209         if ((fc->status < FWBUSEXPLORE) &&
 210             ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
 211             (fp->mode.rreqq.dest_lo  < 0xf0000000) ||
 212             (fp->mode.rreqq.dest_lo >= 0xf0001000))) {
 213                 xfer->resp = EAGAIN;
 214                 xfer->flag = FWXF_BUSY;
 215                 return (EAGAIN);
 216         }
 217
 218         if (info->flag & FWTI_REQ)
 219                 xferq = fc->atq;
 220         else
 221                 xferq = fc->ats;
 222         len = info->hdr_len;
 223         if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
 224                 printf("send.pay_len > maxrec\n");
 225                 return EINVAL;
 226         }
 227         if (info->flag & FWTI_BLOCK_STR)
 228                 len = fp->mode.stream.len;
 229         else if (info->flag & FWTI_BLOCK_ASY)
 230                 len = fp->mode.rresb.len;
 231         else
 232                 len = 0;
 233         if (len != xfer->send.pay_len) {
 234                 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
 235                     len, xfer->send.pay_len, tcode_str[tcode], tcode);
 236                 return EINVAL;
 237         }
 238
 239         if (xferq->start == NULL) {
 240                 printf("xferq->start == NULL\n");
 241                 return EINVAL;
 242         }
 243         if (!(xferq->queued < xferq->maxq)) {
 244                 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
 245                         xferq->queued);
 246                 return EAGAIN;
 247         }
 248
 249         xfer->tl = -1;
 250         if (info->flag & FWTI_TLABEL) {
 251                 if (fw_get_tlabel(fc, xfer) < 0)
 252                         return EAGAIN;
 253         }
 254
 255         xfer->resp = 0;
 256         xfer->fc = fc;
 257         xfer->q = xferq;
 258
 259         fw_asystart(xfer);
 260         return err;
 261 }
 262
 263 /*
 264  * Wakeup blocked process.
 265  */
 266 void
 267 fw_xferwake(struct fw_xfer *xfer)
 268 {
 269         struct mtx *lock = &xfer->fc->wait_lock;
 270
 271         mtx_lock(lock);
 272         xfer->flag |= FWXF_WAKE;
 273         mtx_unlock(lock);
 274
 275         wakeup(xfer);
 276         return;
 277 }
 278
 279 int
 280 fw_xferwait(struct fw_xfer *xfer)
 281 {
 282         struct mtx *lock = &xfer->fc->wait_lock;
 283         int err = 0;
 284
 285         mtx_lock(lock);
 286         while ((xfer->flag & FWXF_WAKE) == 0)
 287                 err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0);
 288         mtx_unlock(lock);
 289
 290         return (err);
 291 }
 292
 293 /*
 294  * Async. request with given xfer structure.
 295  */
 296 static void
 297 fw_asystart(struct fw_xfer *xfer)
 298 {
 299         struct firewire_comm *fc = xfer->fc;
 300
 301         /* Protect from interrupt/timeout */
 302         FW_GLOCK(fc);
 303         xfer->flag = FWXF_INQ;
 304         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 305 #if 0
 306         xfer->q->queued++;
 307 #endif
 308         FW_GUNLOCK(fc);
 309         /* XXX just queue for mbuf */
 310         if (xfer->mbuf == NULL)
 311                 xfer->q->start(fc);
 312         return;
 313 }
 314
 315 static void
 316 firewire_identify(driver_t *driver, device_t parent)
 317 {
 318         BUS_ADD_CHILD(parent, 0, "firewire", -1);
 319 }
 320
 321 static int
 322 firewire_probe(device_t dev)
 323 {
 324         device_set_desc(dev, "IEEE1394(FireWire) bus");
 325         return (0);
 326 }
 327
 328 /* Just use a per-packet callout? */
 329 static void
 330 firewire_xfer_timeout(void *arg, int pending)
 331 {
 332         struct firewire_comm *fc = (struct firewire_comm *)arg;
 333         struct fw_xfer *xfer, *txfer;
 334         struct timeval tv;
 335         struct timeval split_timeout;
 336         STAILQ_HEAD(, fw_xfer) xfer_timeout;
 337         int i;
 338
 339         split_timeout.tv_sec = 0;
 340         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 341
 342         microtime(&tv);
 343         timevalsub(&tv, &split_timeout);
 344         STAILQ_INIT(&xfer_timeout);
 345
 346         mtx_lock(&fc->tlabel_lock);
 347         for (i = 0; i < nitems(fc->tlabels); i++) {
 348                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 349                         if ((xfer->flag & FWXF_SENT) == 0)
 350                                 /* not sent yet */
 351                                 break;
 352                         if (timevalcmp(&xfer->tv, &tv, >))
 353                                 /* the rests are newer than this */
 354                                 break;
 355                         device_printf(fc->bdev,
 356                             "split transaction timeout: tl=0x%x flag=0x%02x\n",
 357                             i, xfer->flag);
 358                         fw_dump_hdr(&xfer->send.hdr, "send");
 359                         xfer->resp = ETIMEDOUT;
 360                         xfer->tl = -1;
 361                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 362                         STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
 363                 }
 364         }
 365         mtx_unlock(&fc->tlabel_lock);
 366         fc->timeout(fc);
 367
 368         STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer)
 369                 xfer->hand(xfer);
 370 }
 371
 372 #define WATCHDOG_HZ 10
 373 static void
 374 firewire_watchdog(void *arg)
 375 {
 376         struct firewire_comm *fc;
 377         static int watchdog_clock = 0;
 378
 379         fc = arg;
 380
 381         /*
 382          * At boot stage, the device interrupt is disabled and
 383          * We encounter a timeout easily. To avoid this,
 384          * ignore clock interrupt for a while.
 385          */
 386         if (watchdog_clock > WATCHDOG_HZ * 15)
 387                 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout);
 388         else
 389                 watchdog_clock++;
 390
 391         callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ,
 392             firewire_watchdog, fc);
 393 }
 394
 395 /*
 396  * The attach routine.
 397  */
 398 static int
 399 firewire_attach(device_t dev)
 400 {
 401         int unit;
 402         struct firewire_softc *sc = device_get_softc(dev);
 403         device_t pa = device_get_parent(dev);
 404         struct firewire_comm *fc;
 405
 406         fc = device_get_softc(pa);
 407         sc->fc = fc;
 408         fc->status = FWBUSNOTREADY;
 409
 410         unit = device_get_unit(dev);
 411         if (fc->nisodma > FWMAXNDMA)
 412                 fc->nisodma = FWMAXNDMA;
 413
 414         fwdev_makedev(sc);
 415
 416         fc->crom_src_buf = malloc(sizeof(struct crom_src_buf),
 417             M_FW, M_NOWAIT | M_ZERO);
 418         if (fc->crom_src_buf == NULL) {
 419                 device_printf(fc->dev,
 420                     "%s: unable to allocate crom src buffer\n", __func__);
 421                 return ENOMEM;
 422         }
 423         fc->topology_map = malloc(sizeof(struct fw_topology_map),
 424             M_FW, M_NOWAIT | M_ZERO);
 425         if (fc->topology_map == NULL) {
 426                 device_printf(fc->dev, "%s: unable to allocate topology map\n",
 427                     __func__);
 428                 free(fc->crom_src_buf, M_FW);
 429                 return ENOMEM;
 430         }
 431         fc->speed_map = malloc(sizeof(struct fw_speed_map),
 432             M_FW, M_NOWAIT | M_ZERO);
 433         if (fc->speed_map == NULL) {
 434                 device_printf(fc->dev, "%s: unable to allocate speed map\n",
 435                     __func__);
 436                 free(fc->crom_src_buf, M_FW);
 437                 free(fc->topology_map, M_FW);
 438                 return ENOMEM;
 439         }
 440
 441         mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF);
 442         mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF);
 443         CALLOUT_INIT(&fc->timeout_callout);
 444         CALLOUT_INIT(&fc->bmr_callout);
 445         CALLOUT_INIT(&fc->busprobe_callout);
 446         TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc);
 447
 448         callout_reset(&sc->fc->timeout_callout, hz,
 449             firewire_watchdog, sc->fc);
 450
 451         /* create thread */
 452         kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread,
 453             0, 0, "fw%d_probe", unit);
 454
 455         /* Locate our children */
 456         bus_generic_probe(dev);
 457
 458         /* launch attachement of the added children */
 459         bus_generic_attach(dev);
 460
 461         /* bus_reset */
 462         FW_GLOCK(fc);
 463         fw_busreset(fc, FWBUSNOTREADY);
 464         FW_GUNLOCK(fc);
 465         fc->ibr(fc);
 466
 467         return 0;
 468 }
 469
 470 /*
 471  * Attach it as child.
 472  */
 473 static device_t
 474 firewire_add_child(device_t dev, u_int order, const char *name, int unit)
 475 {
 476         device_t child;
 477         struct firewire_softc *sc;
 478
 479         sc = device_get_softc(dev);
 480         child = device_add_child(dev, name, unit);
 481         if (child) {
 482                 device_set_ivars(child, sc->fc);
 483                 device_probe_and_attach(child);
 484         }
 485
 486         return child;
 487 }
 488
 489 static int
 490 firewire_resume(device_t dev)
 491 {
 492         struct firewire_softc *sc;
 493
 494         sc = device_get_softc(dev);
 495         sc->fc->status = FWBUSNOTREADY;
 496
 497         bus_generic_resume(dev);
 498
 499         return (0);
 500 }
 501
 502 /*
 503  * Detach it.
 504  */
 505 static int
 506 firewire_detach(device_t dev)
 507 {
 508         struct firewire_softc *sc;
 509         struct firewire_comm *fc;
 510         struct fw_device *fwdev, *fwdev_next;
 511         int err;
 512
 513         sc = device_get_softc(dev);
 514         fc = sc->fc;
 515         mtx_lock(&fc->wait_lock);
 516         fc->status = FWBUSDETACH;
 517         wakeup(fc);
 518         if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60))
 519                 printf("firewire probe thread didn't die\n");
 520         mtx_unlock(&fc->wait_lock);
 521
 522         if (fc->arq != 0 && fc->arq->maxq > 0)
 523                 fw_drain_txq(fc);
 524
 525         if ((err = fwdev_destroydev(sc)) != 0)
 526                 return err;
 527
 528         if ((err = bus_generic_detach(dev)) != 0)
 529                 return err;
 530
 531         callout_stop(&fc->timeout_callout);
 532         callout_stop(&fc->bmr_callout);
 533         callout_stop(&fc->busprobe_callout);
 534
 535         /* XXX xfer_free and untimeout on all xfers */
 536         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
 537              fwdev = fwdev_next) {
 538                 fwdev_next = STAILQ_NEXT(fwdev, link);
 539                 free(fwdev, M_FW);
 540         }
 541         free(fc->topology_map, M_FW);
 542         free(fc->speed_map, M_FW);
 543         free(fc->crom_src_buf, M_FW);
 544
 545         mtx_destroy(&fc->tlabel_lock);
 546         mtx_destroy(&fc->wait_lock);
 547         return (0);
 548 }
 549
 550 static void
 551 fw_xferq_drain(struct fw_xferq *xferq)
 552 {
 553         struct fw_xfer *xfer;
 554
 555         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 556                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 557 #if 0
 558                 xferq->queued--;
 559 #endif
 560                 xfer->resp = EAGAIN;
 561                 xfer->flag = FWXF_SENTERR;
 562                 fw_xfer_done(xfer);
 563         }
 564 }
 565
 566 void
 567 fw_drain_txq(struct firewire_comm *fc)
 568 {
 569         struct fw_xfer *xfer, *txfer;
 570         STAILQ_HEAD(, fw_xfer) xfer_drain;
 571         int i;
 572
 573         STAILQ_INIT(&xfer_drain);
 574
 575         FW_GLOCK(fc);
 576         fw_xferq_drain(fc->atq);
 577         fw_xferq_drain(fc->ats);
 578         for (i = 0; i < fc->nisodma; i++)
 579                 fw_xferq_drain(fc->it[i]);
 580         FW_GUNLOCK(fc);
 581
 582         mtx_lock(&fc->tlabel_lock);
 583         for (i = 0; i < 0x40; i++)
 584                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 585                         if (firewire_debug)
 586                                 printf("tl=%d flag=%d\n", i, xfer->flag);
 587                         xfer->tl = -1;
 588                         xfer->resp = EAGAIN;
 589                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 590                         STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
 591                 }
 592         mtx_unlock(&fc->tlabel_lock);
 593
 594         STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer)
 595                 xfer->hand(xfer);
 596 }
 597
 598 static void
 599 fw_reset_csr(struct firewire_comm *fc)
 600 {
 601         int i;
 602
 603         CSRARC(fc, STATE_CLEAR)
 604                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14;
 605         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 606         CSRARC(fc, NODE_IDS) = 0x3f;
 607
 608         CSRARC(fc, TOPO_MAP + 8) = 0;
 609         fc->irm = -1;
 610
 611         fc->max_node = -1;
 612
 613         for (i = 2; i < 0x100 / 4 - 2; i++) {
 614                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 615         }
 616         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14;
 617         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 618         CSRARC(fc, RESET_START) = 0;
 619         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 620         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 621         CSRARC(fc, CYCLE_TIME) = 0x0;
 622         CSRARC(fc, BUS_TIME) = 0x0;
 623         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 624         CSRARC(fc, BANDWIDTH_AV) = 4915;
 625         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 626         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 627         CSRARC(fc, IP_CHANNELS) = (1U << 31);
 628
 629         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 630         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 631         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 632             1 << 28 | 0xff << 16 | 0x09 << 8;
 633         CSRARC(fc, CONF_ROM + 0xc) = 0;
 634
 635         /* DV depend CSRs see blue book */
 636         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 637         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 638
 639         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14);
 640         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 641 }
 642
 643 static void
 644 fw_init_crom(struct firewire_comm *fc)
 645 {
 646         struct crom_src *src;
 647
 648         src = &fc->crom_src_buf->src;
 649         bzero(src, sizeof(struct crom_src));
 650
 651         /* BUS info sample */
 652         src->hdr.info_len = 4;
 653
 654         src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 655
 656         src->businfo.irmc = 1;
 657         src->businfo.cmc = 1;
 658         src->businfo.isc = 1;
 659         src->businfo.bmc = 1;
 660         src->businfo.pmc = 0;
 661         src->businfo.cyc_clk_acc = 100;
 662         src->businfo.max_rec = fc->maxrec;
 663         src->businfo.max_rom = MAXROM_4;
 664 #define FW_GENERATION_CHANGEABLE 2
 665         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 666         src->businfo.link_spd = fc->speed;
 667
 668         src->businfo.eui64.hi = fc->eui.hi;
 669         src->businfo.eui64.lo = fc->eui.lo;
 670
 671         STAILQ_INIT(&src->chunk_list);
 672
 673         fc->crom_src = src;
 674         fc->crom_root = &fc->crom_src_buf->root;
 675 }
 676
 677 static void
 678 fw_reset_crom(struct firewire_comm *fc)
 679 {
 680         struct crom_src_buf *buf;
 681         struct crom_src *src;
 682         struct crom_chunk *root;
 683
 684         buf =  fc->crom_src_buf;
 685         src = fc->crom_src;
 686         root = fc->crom_root;
 687
 688         STAILQ_INIT(&src->chunk_list);
 689
 690         bzero(root, sizeof(struct crom_chunk));
 691         crom_add_chunk(src, NULL, root, 0);
 692         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 693         /* private company_id */
 694         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 695         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 696         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 697         mtx_lock(&prison0.pr_mtx);
 698         crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname);
 699         mtx_unlock(&prison0.pr_mtx);
 700 }
 701
 702 /*
 703  * Called after bus reset.
 704  */
 705 void
 706 fw_busreset(struct firewire_comm *fc, uint32_t new_status)
 707 {
 708         struct firewire_dev_comm *fdc;
 709         struct crom_src *src;
 710         device_t *devlistp;
 711         uint32_t *newrom;
 712         int i, devcnt;
 713
 714         FW_GLOCK_ASSERT(fc);
 715         if (fc->status == FWBUSMGRELECT)
 716                 callout_stop(&fc->bmr_callout);
 717
 718         fc->status = new_status;
 719         fw_reset_csr(fc);
 720
 721         if (fc->status == FWBUSNOTREADY)
 722                 fw_init_crom(fc);
 723
 724         fw_reset_crom(fc);
 725
 726         if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
 727                 for (i = 0; i < devcnt; i++)
 728                         if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
 729                                 fdc = device_get_softc(devlistp[i]);
 730                                 if (fdc->post_busreset != NULL)
 731                                         fdc->post_busreset(fdc);
 732                         }
 733                 free(devlistp, M_TEMP);
 734         }
 735
 736         src = &fc->crom_src_buf->src;
 737         /*
 738          * If the old config rom needs to be overwritten,
 739          * bump the businfo.generation indicator to
 740          * indicate that we need to be reprobed
 741          * See 1394a-2000 8.3.2.5.4 for more details.
 742          * generation starts at 2 and rolls over at 0xF
 743          * back to 2.
 744          *
 745          * A generation of 0 indicates a device
 746          * that is not 1394a-2000 compliant.
 747          * A generation of 1 indicates a device that
 748          * does not change it's Bus Info Block or
 749          * Configuration ROM.
 750          */
 751 #define FW_MAX_GENERATION 0xF
 752         newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
 753         src = &fc->crom_src_buf->src;
 754         crom_load(src, newrom, CROMSIZE);
 755         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 756                 /* Bump generation and reload. */
 757                 src->businfo.generation++;
 758
 759                 /* Handle generation count wraps. */
 760                 if (src->businfo.generation < FW_GENERATION_CHANGEABLE)
 761                         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 762
 763                 /* Recalculate CRC to account for generation change. */
 764                 crom_load(src, newrom, CROMSIZE);
 765                 bcopy(newrom, fc->config_rom, CROMSIZE);
 766         }
 767         free(newrom, M_FW);
 768 }
 769
 770 /* Call once after reboot */
 771 void fw_init(struct firewire_comm *fc)
 772 {
 773         int i;
 774 #ifdef FW_VMACCESS
 775         struct fw_xfer *xfer;
 776         struct fw_bind *fwb;
 777 #endif
 778
 779         fc->arq->queued = 0;
 780         fc->ars->queued = 0;
 781         fc->atq->queued = 0;
 782         fc->ats->queued = 0;
 783
 784         fc->arq->buf = NULL;
 785         fc->ars->buf = NULL;
 786         fc->atq->buf = NULL;
 787         fc->ats->buf = NULL;
 788
 789         fc->arq->flag = 0;
 790         fc->ars->flag = 0;
 791         fc->atq->flag = 0;
 792         fc->ats->flag = 0;
 793
 794         STAILQ_INIT(&fc->atq->q);
 795         STAILQ_INIT(&fc->ats->q);
 796
 797         for (i = 0; i < fc->nisodma; i++) {
 798                 fc->it[i]->queued = 0;
 799                 fc->ir[i]->queued = 0;
 800
 801                 fc->it[i]->start = NULL;
 802                 fc->ir[i]->start = NULL;
 803
 804                 fc->it[i]->buf = NULL;
 805                 fc->ir[i]->buf = NULL;
 806
 807                 fc->it[i]->flag = FWXFERQ_STREAM;
 808                 fc->ir[i]->flag = FWXFERQ_STREAM;
 809
 810                 STAILQ_INIT(&fc->it[i]->q);
 811                 STAILQ_INIT(&fc->ir[i]->q);
 812         }
 813
 814         fc->arq->maxq = FWMAXQUEUE;
 815         fc->ars->maxq = FWMAXQUEUE;
 816         fc->atq->maxq = FWMAXQUEUE;
 817         fc->ats->maxq = FWMAXQUEUE;
 818
 819         for (i = 0; i < fc->nisodma; i++) {
 820                 fc->ir[i]->maxq = FWMAXQUEUE;
 821                 fc->it[i]->maxq = FWMAXQUEUE;
 822         }
 823
 824         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 825         CSRARC(fc, TOPO_MAP + 4) = 1;
 826         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 827         CSRARC(fc, SPED_MAP + 4) = 1;
 828
 829         STAILQ_INIT(&fc->devices);
 830
 831         /* Initialize Async handlers */
 832         STAILQ_INIT(&fc->binds);
 833         for (i = 0; i < 0x40; i++) {
 834                 STAILQ_INIT(&fc->tlabels[i]);
 835         }
 836
 837 /* DV depend CSRs see blue book */
 838 #if 0
 839         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 840         CSRARC(fc, oPCR) = 0x8000007a;
 841         for (i = 4; i < 0x7c/4; i += 4) {
 842                 CSRARC(fc, i + oPCR) = 0x8000007a;
 843         }
 844
 845         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 846         CSRARC(fc, iPCR) = 0x803f0000;
 847         for (i = 4; i < 0x7c/4; i += 4) {
 848                 CSRARC(fc, i + iPCR) = 0x0;
 849         }
 850 #endif
 851
 852         fc->crom_src_buf = NULL;
 853
 854 #ifdef FW_VMACCESS
 855         xfer = fw_xfer_alloc();
 856         if (xfer == NULL)
 857                 return;
 858
 859         fwb = malloc(sizeof(struct fw_bind), M_FW, M_NOWAIT);
 860         if (fwb == NULL) {
 861                 fw_xfer_free(xfer);
 862                 return;
 863         }
 864         xfer->hand = fw_vmaccess;
 865         xfer->fc = fc;
 866         xfer->sc = NULL;
 867
 868         fwb->start_hi = 0x2;
 869         fwb->start_lo = 0;
 870         fwb->addrlen = 0xffffffff;
 871         fwb->xfer = xfer;
 872         fw_bindadd(fc, fwb);
 873 #endif
 874 }
 875
 876 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)? -1 : \
 877     ((fwb)->end < (addr)) ? 1 : 0)
 878
 879 /*
 880  * To lookup bound process from IEEE1394 address.
 881  */
 882 struct fw_bind *
 883 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
 884 {
 885         u_int64_t addr;
 886         struct fw_bind *tfw, *r = NULL;
 887
 888         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 889         FW_GLOCK(fc);
 890         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 891                 if (BIND_CMP(addr, tfw) == 0) {
 892                         r = tfw;
 893                         break;
 894                 }
 895         FW_GUNLOCK(fc);
 896         return (r);
 897 }
 898
 899 /*
 900  * To bind IEEE1394 address block to process.
 901  */
 902 int
 903 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 904 {
 905         struct fw_bind *tfw, *prev = NULL;
 906         int r = 0;
 907
 908         if (fwb->start > fwb->end) {
 909                 printf("%s: invalid range\n", __func__);
 910                 return EINVAL;
 911         }
 912
 913         FW_GLOCK(fc);
 914         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 915                 if (fwb->end < tfw->start)
 916                         break;
 917                 prev = tfw;
 918         }
 919         if (prev == NULL)
 920                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 921         else if (prev->end < fwb->start)
 922                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 923         else {
 924                 printf("%s: bind failed\n", __func__);
 925                 r = EBUSY;
 926         }
 927         FW_GUNLOCK(fc);
 928         return (r);
 929 }
 930
 931 /*
 932  * To free IEEE1394 address block.
 933  */
 934 int
 935 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 936 {
 937 #if 0
 938         struct fw_xfer *xfer, *next;
 939 #endif
 940         struct fw_bind *tfw;
 941         int s;
 942
 943         s = splfw();
 944         FW_GLOCK(fc);
 945         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 946                 if (tfw == fwb) {
 947                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 948                         goto found;
 949                 }
 950
 951         printf("%s: no such binding\n", __func__);
 952         FW_GUNLOCK(fc);
 953         splx(s);
 954         return (1);
 955 found:
 956 #if 0
 957         /* shall we do this? */
 958         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 959                 next = STAILQ_NEXT(xfer, link);
 960                 fw_xfer_free(xfer);
 961         }
 962         STAILQ_INIT(&fwb->xferlist);
 963 #endif
 964         FW_GUNLOCK(fc);
 965
 966         splx(s);
 967         return 0;
 968 }
 969
 970 int
 971 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
 972     int slen, int rlen, int n,
 973     struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
 974 {
 975         int i, s;
 976         struct fw_xfer *xfer;
 977
 978         for (i = 0; i < n; i++) {
 979                 xfer = fw_xfer_alloc_buf(type, slen, rlen);
 980                 if (xfer == NULL)
 981                         return (i);
 982                 xfer->fc = fc;
 983                 xfer->sc = sc;
 984                 xfer->hand = hand;
 985                 s = splfw();
 986                 STAILQ_INSERT_TAIL(q, xfer, link);
 987                 splx(s);
 988         }
 989         return (n);
 990 }
 991
 992 void
 993 fw_xferlist_remove(struct fw_xferlist *q)
 994 {
 995         struct fw_xfer *xfer, *next;
 996
 997         for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
 998                 next = STAILQ_NEXT(xfer, link);
 999                 fw_xfer_free_buf(xfer);
1000         }
1001         STAILQ_INIT(q);
1002 }
1003 /*
1004  * dump packet header
1005  */
1006 static void
1007 fw_dump_hdr(struct fw_pkt *fp, char *prefix)
1008 {
1009         printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
1010             "src=0x%03x\n", prefix,
1011             fp->mode.hdr.dst & 0x3f,
1012             fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
1013             fp->mode.hdr.tcode, fp->mode.hdr.pri,
1014             fp->mode.hdr.src);
1015 }
1016
1017 /*
1018  * To free transaction label.
1019  */
1020 static void
1021 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
1022 {
1023         struct fw_xfer *txfer;
1024
1025         mtx_lock(&fc->tlabel_lock);
1026         if (xfer->tl < 0) {
1027                 mtx_unlock(&fc->tlabel_lock);
1028                 return;
1029         }
1030         /* make sure the label is allocated */
1031         STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
1032                 if (txfer == xfer)
1033                         break;
1034         if (txfer == NULL) {
1035                 printf("%s: the xfer is not in the queue "
1036                     "(tlabel=%d, flag=0x%x)\n",
1037                     __FUNCTION__, xfer->tl, xfer->flag);
1038                 fw_dump_hdr(&xfer->send.hdr, "send");
1039                 fw_dump_hdr(&xfer->recv.hdr, "recv");
1040                 kdb_backtrace();
1041                 mtx_unlock(&fc->tlabel_lock);
1042                 return;
1043         }
1044
1045         STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
1046         xfer->tl = -1;
1047         mtx_unlock(&fc->tlabel_lock);
1048         return;
1049 }
1050
1051 /*
1052  * To obtain XFER structure by transaction label.
1053  */
1054 static struct fw_xfer *
1055 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
1056 {
1057         struct fw_xfer *xfer;
1058         int s = splfw();
1059         int req;
1060
1061         mtx_lock(&fc->tlabel_lock);
1062         STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
1063                 if (xfer->send.hdr.mode.hdr.dst == node) {
1064                         mtx_unlock(&fc->tlabel_lock);
1065                         splx(s);
1066                         KASSERT(xfer->tl == tlabel,
1067                                 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel));
1068                         /* extra sanity check */
1069                         req = xfer->send.hdr.mode.hdr.tcode;
1070                         if (xfer->fc->tcode[req].valid_res != tcode) {
1071                                 printf("%s: invalid response tcode "
1072                                     "(0x%x for 0x%x)\n", __FUNCTION__,
1073                                     tcode, req);
1074                                 return (NULL);
1075                         }
1076
1077                         if (firewire_debug > 2)
1078                                 printf("fw_tl2xfer: found tl=%d\n", tlabel);
1079                         return (xfer);
1080                 }
1081         mtx_unlock(&fc->tlabel_lock);
1082         if (firewire_debug > 1)
1083                 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
1084         splx(s);
1085         return (NULL);
1086 }
1087
1088 /*
1089  * To allocate IEEE1394 XFER structure.
1090  */
1091 struct fw_xfer *
1092 fw_xfer_alloc(struct malloc_type *type)
1093 {
1094         struct fw_xfer *xfer;
1095
1096         xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
1097         if (xfer == NULL)
1098                 return xfer;
1099
1100         xfer->malloc = type;
1101         xfer->tl = -1;
1102
1103         return xfer;
1104 }
1105
1106 struct fw_xfer *
1107 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
1108 {
1109         struct fw_xfer *xfer;
1110
1111         xfer = fw_xfer_alloc(type);
1112         if (xfer == NULL)
1113                 return (NULL);
1114         xfer->send.pay_len = send_len;
1115         xfer->recv.pay_len = recv_len;
1116         if (send_len > 0) {
1117                 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
1118                 if (xfer->send.payload == NULL) {
1119                         fw_xfer_free(xfer);
1120                         return (NULL);
1121                 }
1122         }
1123         if (recv_len > 0) {
1124                 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1125                 if (xfer->recv.payload == NULL) {
1126                         if (xfer->send.payload != NULL)
1127                                 free(xfer->send.payload, type);
1128                         fw_xfer_free(xfer);
1129                         return (NULL);
1130                 }
1131         }
1132         return (xfer);
1133 }
1134
1135 /*
1136  * IEEE1394 XFER post process.
1137  */
1138 void
1139 fw_xfer_done(struct fw_xfer *xfer)
1140 {
1141         if (xfer->hand == NULL) {
1142                 printf("hand == NULL\n");
1143                 return;
1144         }
1145
1146         if (xfer->fc == NULL)
1147                 panic("fw_xfer_done: why xfer->fc is NULL?");
1148
1149         fw_tl_free(xfer->fc, xfer);
1150         xfer->hand(xfer);
1151 }
1152
1153 void
1154 fw_xfer_unload(struct fw_xfer *xfer)
1155 {
1156
1157         if (xfer == NULL)
1158                 return;
1159
1160         if (xfer->fc != NULL) {
1161                 FW_GLOCK(xfer->fc);
1162                 if (xfer->flag & FWXF_INQ) {
1163                         STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1164                         xfer->flag &= ~FWXF_INQ;
1165         #if 0
1166                         xfer->q->queued--;
1167         #endif
1168                 }
1169                 FW_GUNLOCK(xfer->fc);
1170
1171                 /*
1172                  * Ensure that any tlabel owner can't access this
1173                  * xfer after it's freed.
1174                  */
1175                 fw_tl_free(xfer->fc, xfer);
1176 #if 1
1177                 if (xfer->flag & FWXF_START)
1178                         /*
1179                          * This could happen if:
1180                          *  1. We call fwohci_arcv() before fwohci_txd().
1181                          *  2. firewire_watch() is called.
1182                          */
1183                         printf("fw_xfer_free FWXF_START\n");
1184 #endif
1185         }
1186         xfer->flag = FWXF_INIT;
1187         xfer->resp = 0;
1188 }
1189
1190 /*
1191  * To free IEEE1394 XFER structure.
1192  */
1193 void
1194 fw_xfer_free_buf(struct fw_xfer *xfer)
1195 {
1196         if (xfer == NULL) {
1197                 printf("%s: xfer == NULL\n", __func__);
1198                 return;
1199         }
1200         fw_xfer_unload(xfer);
1201         if (xfer->send.payload != NULL)
1202                 free(xfer->send.payload, xfer->malloc);
1203         if (xfer->recv.payload != NULL)
1204                 free(xfer->recv.payload, xfer->malloc);
1205         free(xfer, xfer->malloc);
1206 }
1207
1208 void
1209 fw_xfer_free(struct fw_xfer *xfer)
1210 {
1211         if (xfer == NULL) {
1212                 printf("%s: xfer == NULL\n", __func__);
1213                 return;
1214         }
1215         fw_xfer_unload(xfer);
1216         free(xfer, xfer->malloc);
1217 }
1218
1219 void
1220 fw_asy_callback_free(struct fw_xfer *xfer)
1221 {
1222 #if 0
1223         printf("asyreq done flag=0x%02x resp=%d\n",
1224                                 xfer->flag, xfer->resp);
1225 #endif
1226         fw_xfer_free(xfer);
1227 }
1228
1229 /*
1230  * To configure PHY.
1231  */
1232 static void
1233 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1234 {
1235         struct fw_xfer *xfer;
1236         struct fw_pkt *fp;
1237
1238         fc->status = FWBUSPHYCONF;
1239
1240         xfer = fw_xfer_alloc(M_FWXFER);
1241         if (xfer == NULL)
1242                 return;
1243         xfer->fc = fc;
1244         xfer->hand = fw_asy_callback_free;
1245
1246         fp = &xfer->send.hdr;
1247         fp->mode.ld[1] = 0;
1248         if (root_node >= 0)
1249                 fp->mode.ld[1] |= (1 << 23) | (root_node & 0x3f) << 24;
1250         if (gap_count >= 0)
1251                 fp->mode.ld[1] |= (1 << 22) | (gap_count & 0x3f) << 16;
1252         fp->mode.ld[2] = ~fp->mode.ld[1];
1253 /* XXX Dangerous, how to pass PHY packet to device driver */
1254         fp->mode.common.tcode |= FWTCODE_PHY;
1255
1256         if (firewire_debug)
1257                 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n",
1258                                         __func__, root_node, gap_count);
1259         fw_asyreq(fc, -1, xfer);
1260 }
1261
1262 /*
1263  * Dump self ID.
1264  */
1265 static void
1266 fw_print_sid(uint32_t sid)
1267 {
1268         union fw_self_id *s;
1269         s = (union fw_self_id *) &sid;
1270         if (s->p0.sequel) {
1271                 if (s->p1.sequence_num == FW_SELF_ID_PAGE0) {
1272                         printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d"
1273                             "p8:%d p9:%d p10:%d\n",
1274                             s->p1.phy_id, s->p1.port3, s->p1.port4,
1275                             s->p1.port5, s->p1.port6, s->p1.port7,
1276                             s->p1.port8, s->p1.port9, s->p1.port10);
1277                 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) {
1278                         printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n",
1279                             s->p2.phy_id, s->p2.port11, s->p2.port12,
1280                             s->p2.port13, s->p2.port14, s->p2.port15);
1281                 } else {
1282                         printf("node:%d Unknown Self ID Page number %d\n",
1283                             s->p1.phy_id, s->p1.sequence_num);
1284                 }
1285         } else {
1286                 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d"
1287                     " p0:%d p1:%d p2:%d i:%d m:%d\n",
1288                     s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1289                     s->p0.phy_speed, s->p0.contender,
1290                     s->p0.power_class, s->p0.port0, s->p0.port1,
1291                     s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1292         }
1293 }
1294
1295 /*
1296  * To receive self ID.
1297  */
1298 void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len)
1299 {
1300         uint32_t *p;
1301         union fw_self_id *self_id;
1302         u_int i, j, node, c_port = 0, i_branch = 0;
1303
1304         fc->sid_cnt = len / (sizeof(uint32_t) * 2);
1305         fc->max_node = fc->nodeid & 0x3f;
1306         CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
1307         fc->status = FWBUSCYMELECT;
1308         fc->topology_map->crc_len = 2;
1309         fc->topology_map->generation++;
1310         fc->topology_map->self_id_count = 0;
1311         fc->topology_map->node_count= 0;
1312         fc->speed_map->generation++;
1313         fc->speed_map->crc_len = 1 + (64 * 64 + 3) / 4;
1314         self_id = &fc->topology_map->self_id[0];
1315         for (i = 0; i < fc->sid_cnt; i++) {
1316                 if (sid[1] != ~sid[0]) {
1317                         device_printf(fc->bdev,
1318                             "%s: ERROR invalid self-id packet\n", __func__);
1319                         sid += 2;
1320                         continue;
1321                 }
1322                 *self_id = *((union fw_self_id *)sid);
1323                 fc->topology_map->crc_len++;
1324                 if (self_id->p0.sequel == 0) {
1325                         fc->topology_map->node_count++;
1326                         c_port = 0;
1327                         if (firewire_debug)
1328                                 fw_print_sid(sid[0]);
1329                         node = self_id->p0.phy_id;
1330                         if (fc->max_node < node)
1331                                 fc->max_node = self_id->p0.phy_id;
1332                         /* XXX I'm not sure this is the right speed_map */
1333                         fc->speed_map->speed[node][node] =
1334                             self_id->p0.phy_speed;
1335                         for (j = 0; j < node; j++) {
1336                                 fc->speed_map->speed[j][node] =
1337                                     fc->speed_map->speed[node][j] =
1338                                     min(fc->speed_map->speed[j][j],
1339                                         self_id->p0.phy_speed);
1340                         }
1341                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1342                           (self_id->p0.link_active && self_id->p0.contender))
1343                                 fc->irm = self_id->p0.phy_id;
1344                         if (self_id->p0.port0 >= 0x2)
1345                                 c_port++;
1346                         if (self_id->p0.port1 >= 0x2)
1347                                 c_port++;
1348                         if (self_id->p0.port2 >= 0x2)
1349                                 c_port++;
1350                 }
1351                 if (c_port > 2)
1352                         i_branch += (c_port - 2);
1353                 sid += 2;
1354                 self_id++;
1355                 fc->topology_map->self_id_count++;
1356         }
1357         /* CRC */
1358         fc->topology_map->crc = fw_crc16(
1359             (uint32_t *)&fc->topology_map->generation,
1360             fc->topology_map->crc_len * 4);
1361         fc->speed_map->crc = fw_crc16(
1362             (uint32_t *)&fc->speed_map->generation,
1363             fc->speed_map->crc_len * 4);
1364         /* byteswap and copy to CSR */
1365         p = (uint32_t *)fc->topology_map;
1366         for (i = 0; i <= fc->topology_map->crc_len; i++)
1367                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1368         p = (uint32_t *)fc->speed_map;
1369         CSRARC(fc, SPED_MAP) = htonl(*p++);
1370         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1371         /* don't byte-swap uint8_t array */
1372         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4);
1373
1374         fc->max_hop = fc->max_node - i_branch;
1375         device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n",
1376             fc->max_node + 1, fc->max_hop,
1377             (fc->irm == -1) ? "Not IRM capable" : "cable IRM",
1378             fc->irm, (fc->irm == fc->nodeid) ? " (me) " : "");
1379
1380         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1381                 if (fc->irm == fc->nodeid) {
1382                         fc->status = FWBUSMGRDONE;
1383                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1384                         fw_bmr(fc);
1385                 } else {
1386                         fc->status = FWBUSMGRELECT;
1387                         callout_reset(&fc->bmr_callout, hz / 8,
1388                             fw_try_bmr, fc);
1389                 }
1390         } else
1391                 fc->status = FWBUSMGRDONE;
1392
1393         callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc);
1394 }
1395
1396 /*
1397  * To probe devices on the IEEE1394 bus.
1398  */
1399 static void
1400 fw_bus_probe(void *arg)
1401 {
1402         struct firewire_comm *fc;
1403         struct fw_device *fwdev;
1404         int s;
1405
1406         s = splfw();
1407         fc = arg;
1408         fc->status = FWBUSEXPLORE;
1409
1410         /* Invalidate all devices, just after bus reset. */
1411         if (firewire_debug)
1412                 device_printf(fc->bdev, "%s:"
1413                         "iterate and invalidate all nodes\n",
1414                         __func__);
1415         STAILQ_FOREACH(fwdev, &fc->devices, link)
1416                 if (fwdev->status != FWDEVINVAL) {
1417                         fwdev->status = FWDEVINVAL;
1418                         fwdev->rcnt = 0;
1419                         if (firewire_debug)
1420                                 device_printf(fc->bdev, "%s:"
1421                                         "Invalidate Dev ID: %08x%08x\n",
1422                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1423                 } else {
1424                         if (firewire_debug)
1425                                 device_printf(fc->bdev, "%s:"
1426                                         "Dev ID: %08x%08x already invalid\n",
1427                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1428                 }
1429         splx(s);
1430
1431         wakeup(fc);
1432 }
1433
1434 static int
1435 fw_explore_read_quads(struct fw_device *fwdev, int offset,
1436     uint32_t *quad, int length)
1437 {
1438         struct fw_xfer *xfer;
1439         uint32_t tmp;
1440         int i, error;
1441
1442         for (i = 0; i < length; i++, offset += sizeof(uint32_t)) {
1443                 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff,
1444                     0xf0000000 | offset, &tmp, fw_xferwake);
1445                 if (xfer == NULL)
1446                         return (-1);
1447                 fw_xferwait(xfer);
1448
1449                 if (xfer->resp == 0)
1450                         quad[i] = ntohl(tmp);
1451
1452                 error = xfer->resp;
1453                 fw_xfer_free(xfer);
1454                 if (error)
1455                         return (error);
1456         }
1457         return (0);
1458 }
1459
1460
1461 static int
1462 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1463 {
1464         int err, i, off;
1465         struct csrdirectory *dir;
1466         struct csrreg *reg;
1467
1468         dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)];
1469         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1470             (uint32_t *)dir, 1);
1471         if (err)
1472                 return (-1);
1473
1474         offset += sizeof(uint32_t);
1475         reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)];
1476         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1477             (uint32_t *)reg, dir->crc_len);
1478         if (err)
1479                 return (-1);
1480
1481         /* XXX check CRC */
1482
1483         off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1484         if (fwdev->rommax < off)
1485                 fwdev->rommax = off;
1486
1487         if (recur == 0)
1488                 return (0);
1489
1490         for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) {
1491                 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
1492                         recur = 1;
1493                 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
1494                         recur = 0;
1495                 else
1496                         continue;
1497
1498                 off = offset + reg[i].val * sizeof(uint32_t);
1499                 if (off > CROMSIZE) {
1500                         printf("%s: invalid offset %d\n", __FUNCTION__, off);
1501                         return (-1);
1502                 }
1503                 err = fw_explore_csrblock(fwdev, off, recur);
1504                 if (err)
1505                         return (-1);
1506         }
1507         return (0);
1508 }
1509
1510 static int
1511 fw_explore_node(struct fw_device *dfwdev)
1512 {
1513         struct firewire_comm *fc;
1514         struct fw_device *fwdev, *pfwdev, *tfwdev;
1515         uint32_t *csr;
1516         struct csrhdr *hdr;
1517         struct bus_info *binfo;
1518         int err, node;
1519         uint32_t speed_test = 0;
1520
1521         fc = dfwdev->fc;
1522         csr = dfwdev->csrrom;
1523         node = dfwdev->dst;
1524
1525         /* First quad */
1526         err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
1527         if (err) {
1528                 dfwdev->status = FWDEVINVAL;
1529                 return (-1);
1530         }
1531         hdr = (struct csrhdr *)&csr[0];
1532         if (hdr->info_len != 4) {
1533                 if (firewire_debug)
1534                         device_printf(fc->bdev,
1535                             "%s: node%d: wrong bus info len(%d)\n",
1536                             __func__, node, hdr->info_len);
1537                 dfwdev->status = FWDEVINVAL;
1538                 return (-1);
1539         }
1540
1541         /* bus info */
1542         err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1543         if (err) {
1544                 dfwdev->status = FWDEVINVAL;
1545                 return (-1);
1546         }
1547         binfo = (struct bus_info *)&csr[1];
1548         if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1549                 dfwdev->status = FWDEVINVAL;
1550                 return (-1);
1551         }
1552
1553         if (firewire_debug)
1554                 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n"
1555                     "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) "
1556                     "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) "
1557                     "generation(%d) link_spd(%d)\n",
1558                     __func__, node,
1559                     binfo->irmc, binfo->cmc, binfo->isc,
1560                     binfo->bmc, binfo->pmc, binfo->cyc_clk_acc,
1561                     binfo->max_rec, binfo->max_rom,
1562                     binfo->generation, binfo->link_spd);
1563
1564         STAILQ_FOREACH(fwdev, &fc->devices, link)
1565                 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1566                         break;
1567         if (fwdev == NULL) {
1568                 /* new device */
1569                 fwdev = malloc(sizeof(struct fw_device), M_FW,
1570                     M_NOWAIT | M_ZERO);
1571                 if (fwdev == NULL) {
1572                         device_printf(fc->bdev, "%s: node%d: no memory\n",
1573                                         __func__, node);
1574                         return (-1);
1575                 }
1576                 fwdev->fc = fc;
1577                 fwdev->eui = binfo->eui64;
1578                 fwdev->dst = dfwdev->dst;
1579                 fwdev->maxrec = dfwdev->maxrec;
1580                 fwdev->status = dfwdev->status;
1581
1582                 /*
1583                  * Pre-1394a-2000 didn't have link_spd in
1584                  * the Bus Info block, so try and use the
1585                  * speed map value.
1586                  * 1394a-2000 compliant devices only use
1587                  * the Bus Info Block link spd value, so
1588                  * ignore the speed map altogether. SWB
1589                  */
1590                 if (binfo->link_spd == FWSPD_S100 /* 0 */) {
1591                         device_printf(fc->bdev, "%s: "
1592                             "Pre 1394a-2000 detected\n", __func__);
1593                         fwdev->speed = fc->speed_map->speed[fc->nodeid][node];
1594                 } else
1595                         fwdev->speed = binfo->link_spd;
1596                 /*
1597                  * Test this speed with a read to the CSRROM.
1598                  * If it fails, slow down the speed and retry.
1599                  */
1600                 while (fwdev->speed > FWSPD_S100 /* 0 */) {
1601                         err = fw_explore_read_quads(fwdev, CSRROMOFF,
1602                             &speed_test, 1);
1603                         if (err) {
1604                                 device_printf(fc->bdev,
1605                                     "%s: fwdev->speed(%s) decremented due to negotiation\n",
1606                                     __func__, linkspeed[fwdev->speed]);
1607                                 fwdev->speed--;
1608                         } else
1609                                 break;
1610
1611                 }
1612
1613                 /*
1614                  * If the fwdev is not found in the
1615                  * fc->devices TAILQ, then we will add it.
1616                  */
1617                 pfwdev = NULL;
1618                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1619                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1620                                 (tfwdev->eui.hi == fwdev->eui.hi &&
1621                                 tfwdev->eui.lo > fwdev->eui.lo))
1622                                 break;
1623                         pfwdev = tfwdev;
1624                 }
1625                 if (pfwdev == NULL)
1626                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1627                 else
1628                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1629         } else {
1630                 fwdev->dst = node;
1631                 fwdev->status = FWDEVINIT;
1632                 /* unchanged ? */
1633                 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) {
1634                         if (firewire_debug)
1635                                 device_printf(fc->dev,
1636                                     "node%d: crom unchanged\n", node);
1637                         return (0);
1638                 }
1639         }
1640
1641         bzero(&fwdev->csrrom[0], CROMSIZE);
1642
1643         /* copy first quad and bus info block */
1644         bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5);
1645         fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1646
1647         err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1648
1649         if (err) {
1650                 if (firewire_debug)
1651                         device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n",
1652                                         __func__, err);
1653                 fwdev->status = FWDEVINVAL;
1654                 fwdev->csrrom[0] = 0;
1655         }
1656         return (err);
1657
1658 }
1659
1660 /*
1661  * Find the self_id packet for a node, ignoring sequels.
1662  */
1663 static union fw_self_id *
1664 fw_find_self_id(struct firewire_comm *fc, int node)
1665 {
1666         uint32_t i;
1667         union fw_self_id *s;
1668
1669         for (i = 0; i < fc->topology_map->self_id_count; i++) {
1670                 s = &fc->topology_map->self_id[i];
1671                 if (s->p0.sequel)
1672                         continue;
1673                 if (s->p0.phy_id == node)
1674                         return s;
1675         }
1676         return 0;
1677 }
1678
1679 static void
1680 fw_explore(struct firewire_comm *fc)
1681 {
1682         int node, err, s, i, todo, todo2, trys;
1683         char nodes[63];
1684         struct fw_device dfwdev;
1685         union fw_self_id *fwsid;
1686
1687         todo = 0;
1688         /* setup dummy fwdev */
1689         dfwdev.fc = fc;
1690         dfwdev.speed = 0;
1691         dfwdev.maxrec = 8; /* 512 */
1692         dfwdev.status = FWDEVINIT;
1693
1694         for (node = 0; node <= fc->max_node; node++) {
1695                 /* We don't probe myself and linkdown nodes */
1696                 if (node == fc->nodeid) {
1697                         if (firewire_debug)
1698                                 device_printf(fc->bdev, "%s:"
1699                                     "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n",
1700                                     __func__, node, fc->nodeid, fc->max_node);
1701                         continue;
1702                 } else if (firewire_debug) {
1703                         device_printf(fc->bdev, "%s:"
1704                             "node(%d) fc->max_node(%d) found\n",
1705                             __func__, node, fc->max_node);
1706                 }
1707                 fwsid = fw_find_self_id(fc, node);
1708                 if (!fwsid || !fwsid->p0.link_active) {
1709                         if (firewire_debug)
1710                                 device_printf(fc->bdev,
1711                                     "%s: node%d: link down\n",
1712                                     __func__, node);
1713                         continue;
1714                 }
1715                 nodes[todo++] = node;
1716         }
1717
1718         s = splfw();
1719         for (trys = 0; todo > 0 && trys < 3; trys++) {
1720                 todo2 = 0;
1721                 for (i = 0; i < todo; i++) {
1722                         dfwdev.dst = nodes[i];
1723                         err = fw_explore_node(&dfwdev);
1724                         if (err)
1725                                 nodes[todo2++] = nodes[i];
1726                         if (firewire_debug)
1727                                 device_printf(fc->bdev,
1728                                     "%s: node %d, err = %d\n",
1729                                     __func__, node, err);
1730                 }
1731                 todo = todo2;
1732         }
1733         splx(s);
1734 }
1735
1736 static void
1737 fw_bus_probe_thread(void *arg)
1738 {
1739         struct firewire_comm *fc;
1740
1741         fc = arg;
1742
1743         mtx_lock(&fc->wait_lock);
1744         while (fc->status != FWBUSDETACH) {
1745                 if (fc->status == FWBUSEXPLORE) {
1746                         mtx_unlock(&fc->wait_lock);
1747                         fw_explore(fc);
1748                         fc->status = FWBUSEXPDONE;
1749                         if (firewire_debug)
1750                                 printf("bus_explore done\n");
1751                         fw_attach_dev(fc);
1752                         mtx_lock(&fc->wait_lock);
1753                 }
1754                 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0);
1755         }
1756         mtx_unlock(&fc->wait_lock);
1757         kproc_exit(0);
1758 }
1759
1760 /*
1761  * To attach sub-devices layer onto IEEE1394 bus.
1762  */
1763 static void
1764 fw_attach_dev(struct firewire_comm *fc)
1765 {
1766         struct fw_device *fwdev, *next;
1767         int i, err;
1768         device_t *devlistp;
1769         int devcnt;
1770         struct firewire_dev_comm *fdc;
1771
1772         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1773                 next = STAILQ_NEXT(fwdev, link);
1774                 if (fwdev->status == FWDEVINIT) {
1775                         fwdev->status = FWDEVATTACHED;
1776                 } else if (fwdev->status == FWDEVINVAL) {
1777                         fwdev->rcnt++;
1778                         if (firewire_debug)
1779                                 device_printf(fc->bdev, "%s:"
1780                                     "fwdev->rcnt(%d), hold_count(%d)\n",
1781                                     __func__, fwdev->rcnt, hold_count);
1782                         if (fwdev->rcnt > hold_count) {
1783                                 /*
1784                                  * Remove devices which have not been seen
1785                                  * for a while.
1786                                  */
1787                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1788                                     link);
1789                                 free(fwdev, M_FW);
1790                         }
1791                 }
1792         }
1793
1794         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1795         if (err == 0) {
1796                 for (i = 0; i < devcnt; i++) {
1797                         if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
1798                                 fdc = device_get_softc(devlistp[i]);
1799                                 if (fdc->post_explore != NULL)
1800                                         fdc->post_explore(fdc);
1801                         }
1802                 }
1803                 free(devlistp, M_TEMP);
1804         }
1805
1806         return;
1807 }
1808
1809 /*
1810  * To allocate unique transaction label.
1811  */
1812 static int
1813 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1814 {
1815         u_int dst, new_tlabel;
1816         struct fw_xfer *txfer;
1817         int s;
1818
1819         dst = xfer->send.hdr.mode.hdr.dst & 0x3f;
1820         s = splfw();
1821         mtx_lock(&fc->tlabel_lock);
1822         new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f;
1823         STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
1824                 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst)
1825                         break;
1826         if (txfer == NULL) {
1827                 fc->last_tlabel[dst] = new_tlabel;
1828                 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
1829                 mtx_unlock(&fc->tlabel_lock);
1830                 splx(s);
1831                 xfer->tl = new_tlabel;
1832                 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
1833                 if (firewire_debug > 1)
1834                         printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel);
1835                 return (new_tlabel);
1836         }
1837         mtx_unlock(&fc->tlabel_lock);
1838         splx(s);
1839
1840         if (firewire_debug > 1)
1841                 printf("fw_get_tlabel: no free tlabel\n");
1842         return (-1);
1843 }
1844
1845 static void
1846 fw_rcv_copy(struct fw_rcv_buf *rb)
1847 {
1848         struct fw_pkt *pkt;
1849         u_char *p;
1850         struct tcode_info *tinfo;
1851         u_int res, i, len, plen;
1852
1853         rb->xfer->recv.spd = rb->spd;
1854
1855         pkt = (struct fw_pkt *)rb->vec->iov_base;
1856         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1857
1858         /* Copy header */
1859         p = (u_char *)&rb->xfer->recv.hdr;
1860         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1861         rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
1862         rb->vec->iov_len -= tinfo->hdr_len;
1863
1864         /* Copy payload */
1865         p = (u_char *)rb->xfer->recv.payload;
1866         res = rb->xfer->recv.pay_len;
1867
1868         /* special handling for RRESQ */
1869         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1870             p != NULL && res >= sizeof(uint32_t)) {
1871                 *(uint32_t *)p = pkt->mode.rresq.data;
1872                 rb->xfer->recv.pay_len = sizeof(uint32_t);
1873                 return;
1874         }
1875
1876         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1877                 return;
1878
1879         plen = pkt->mode.rresb.len;
1880
1881         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1882                 len = MIN(rb->vec->iov_len, plen);
1883                 if (res < len) {
1884                         device_printf(rb->fc->bdev, "%s:"
1885                                 " rcv buffer(%d) is %d bytes short.\n",
1886                                 __func__, rb->xfer->recv.pay_len, len - res);
1887                         len = res;
1888                 }
1889                 bcopy(rb->vec->iov_base, p, len);
1890                 p += len;
1891                 res -= len;
1892                 plen -= len;
1893                 if (res == 0 || plen == 0)
1894                         break;
1895         }
1896         rb->xfer->recv.pay_len -= res;
1897 }
1898
1899 /*
1900  * Generic packet receiving process.
1901  */
1902 void
1903 fw_rcv(struct fw_rcv_buf *rb)
1904 {
1905         struct fw_pkt *fp, *resfp;
1906         struct fw_bind *bind;
1907         int tcode;
1908         int i, len, oldstate;
1909 #if 0
1910         {
1911                 uint32_t *qld;
1912                 int i;
1913                 qld = (uint32_t *)buf;
1914                 printf("spd %d len:%d\n", spd, len);
1915                 for (i = 0; i <= len && i < 32; i+= 4) {
1916                         printf("0x%08x ", ntohl(qld[i/4]));
1917                         if ((i % 16) == 15) printf("\n");
1918                 }
1919                 if ((i % 16) != 15) printf("\n");
1920         }
1921 #endif
1922         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1923         tcode = fp->mode.common.tcode;
1924         switch (tcode) {
1925         case FWTCODE_WRES:
1926         case FWTCODE_RRESQ:
1927         case FWTCODE_RRESB:
1928         case FWTCODE_LRES:
1929                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1930                                 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode);
1931                 if (rb->xfer == NULL) {
1932                         device_printf(rb->fc->bdev, "%s: unknown response "
1933                             "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1934                             __func__,
1935                             tcode_str[tcode], tcode,
1936                             fp->mode.hdr.src,
1937                             fp->mode.hdr.tlrt >> 2,
1938                             fp->mode.hdr.tlrt & 3,
1939                             fp->mode.rresq.data);
1940 #if 0
1941                         printf("try ad-hoc work around!!\n");
1942                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1943                             (fp->mode.hdr.tlrt >> 2)^3);
1944                         if (rb->xfer == NULL) {
1945                                 printf("no use...\n");
1946                                 return;
1947                         }
1948 #else
1949                         return;
1950 #endif
1951                 }
1952                 fw_rcv_copy(rb);
1953                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1954                         rb->xfer->resp = EIO;
1955                 else
1956                         rb->xfer->resp = 0;
1957                 /* make sure the packet is drained in AT queue */
1958                 oldstate = rb->xfer->flag;
1959                 rb->xfer->flag = FWXF_RCVD;
1960                 switch (oldstate) {
1961                 case FWXF_SENT:
1962                         fw_xfer_done(rb->xfer);
1963                         break;
1964                 case FWXF_START:
1965 #if 0
1966                         if (firewire_debug)
1967                                 printf("not sent yet tl=%x\n", rb->xfer->tl);
1968 #endif
1969                         break;
1970                 default:
1971                         device_printf(rb->fc->bdev, "%s: "
1972                             "unexpected flag 0x%02x\n", __func__,
1973                             rb->xfer->flag);
1974                 }
1975                 return;
1976         case FWTCODE_WREQQ:
1977         case FWTCODE_WREQB:
1978         case FWTCODE_RREQQ:
1979         case FWTCODE_RREQB:
1980         case FWTCODE_LREQ:
1981                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1982                     fp->mode.rreqq.dest_lo);
1983                 if (bind == NULL) {
1984                         device_printf(rb->fc->bdev, "%s: "
1985                             "Unknown service addr 0x%04x:0x%08x %s(%x)"
1986                             " src=0x%x data=%x\n",
1987                             __func__,
1988                             fp->mode.wreqq.dest_hi,
1989                             fp->mode.wreqq.dest_lo,
1990                             tcode_str[tcode], tcode,
1991                             fp->mode.hdr.src,
1992                             ntohl(fp->mode.wreqq.data));
1993
1994                         if (rb->fc->status == FWBUSINIT) {
1995                                 device_printf(rb->fc->bdev,
1996                                     "%s: cannot respond(bus reset)!\n",
1997                                     __func__);
1998                                 return;
1999                         }
2000                         rb->xfer = fw_xfer_alloc(M_FWXFER);
2001                         if (rb->xfer == NULL) {
2002                                 return;
2003                         }
2004                         rb->xfer->send.spd = rb->spd;
2005                         rb->xfer->send.pay_len = 0;
2006                         resfp = &rb->xfer->send.hdr;
2007                         switch (tcode) {
2008                         case FWTCODE_WREQQ:
2009                         case FWTCODE_WREQB:
2010                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
2011                                 break;
2012                         case FWTCODE_RREQQ:
2013                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
2014                                 break;
2015                         case FWTCODE_RREQB:
2016                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
2017                                 break;
2018                         case FWTCODE_LREQ:
2019                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
2020                                 break;
2021                         }
2022                         resfp->mode.hdr.dst = fp->mode.hdr.src;
2023                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
2024                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
2025                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
2026                         resfp->mode.rresb.extcode = 0;
2027                         resfp->mode.rresb.len = 0;
2028 /*
2029                         rb->xfer->hand = fw_xferwake;
2030 */
2031                         rb->xfer->hand = fw_xfer_free;
2032                         if (fw_asyreq(rb->fc, -1, rb->xfer))
2033                                 fw_xfer_free(rb->xfer);
2034                         return;
2035                 }
2036                 len = 0;
2037                 for (i = 0; i < rb->nvec; i++)
2038                         len += rb->vec[i].iov_len;
2039                 rb->xfer = STAILQ_FIRST(&bind->xferlist);
2040                 if (rb->xfer == NULL) {
2041                         device_printf(rb->fc->bdev, "%s: "
2042                             "Discard a packet for this bind.\n", __func__);
2043                         return;
2044                 }
2045                 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
2046                 fw_rcv_copy(rb);
2047                 rb->xfer->hand(rb->xfer);
2048                 return;
2049 #if 0 /* shouldn't happen ?? or for GASP */
2050         case FWTCODE_STREAM:
2051         {
2052                 struct fw_xferq *xferq;
2053
2054                 xferq = rb->fc->ir[sub];
2055 #if 0
2056                 printf("stream rcv dma %d len %d off %d spd %d\n",
2057                         sub, len, off, spd);
2058 #endif
2059                 if (xferq->queued >= xferq->maxq) {
2060                         printf("receive queue is full\n");
2061                         return;
2062                 }
2063                 /* XXX get xfer from xfer queue, we don't need copy for
2064                         per packet mode */
2065                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
2066                                                 vec[0].iov_len);
2067                 if (rb->xfer == NULL)
2068                         return;
2069                 fw_rcv_copy(rb)
2070                 s = splfw();
2071                 xferq->queued++;
2072                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
2073                 splx(s);
2074                 sc = device_get_softc(rb->fc->bdev);
2075                 if (SEL_WAITING(&xferq->rsel))
2076                         selwakeuppri(&xferq->rsel, FWPRI);
2077                 if (xferq->flag & FWXFERQ_WAKEUP) {
2078                         xferq->flag &= ~FWXFERQ_WAKEUP;
2079                         wakeup((caddr_t)xferq);
2080                 }
2081                 if (xferq->flag & FWXFERQ_HANDLER) {
2082                         xferq->hand(xferq);
2083                 }
2084                 return;
2085                 break;
2086         }
2087 #endif
2088         default:
2089                 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n",
2090                     __func__, tcode);
2091                 break;
2092         }
2093 }
2094
2095 /*
2096  * Post process for Bus Manager election process.
2097  */
2098 static void
2099 fw_try_bmr_callback(struct fw_xfer *xfer)
2100 {
2101         struct firewire_comm *fc;
2102         int bmr;
2103
2104         if (xfer == NULL)
2105                 return;
2106         fc = xfer->fc;
2107         if (xfer->resp != 0)
2108                 goto error;
2109         if (xfer->recv.payload == NULL)
2110                 goto error;
2111         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2112                 goto error;
2113
2114         bmr = ntohl(xfer->recv.payload[0]);
2115         if (bmr == 0x3f)
2116                 bmr = fc->nodeid;
2117
2118         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2119         fw_xfer_free_buf(xfer);
2120         fw_bmr(fc);
2121         return;
2122
2123 error:
2124         device_printf(fc->bdev, "bus manager election failed\n");
2125         fw_xfer_free_buf(xfer);
2126 }
2127
2128
2129 /*
2130  * To candidate Bus Manager election process.
2131  */
2132 static void
2133 fw_try_bmr(void *arg)
2134 {
2135         struct fw_xfer *xfer;
2136         struct firewire_comm *fc = arg;
2137         struct fw_pkt *fp;
2138         int err = 0;
2139
2140         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2141         if (xfer == NULL)
2142                 return;
2143         xfer->send.spd = 0;
2144         fc->status = FWBUSMGRELECT;
2145
2146         fp = &xfer->send.hdr;
2147         fp->mode.lreq.dest_hi = 0xffff;
2148         fp->mode.lreq.tlrt = 0;
2149         fp->mode.lreq.tcode = FWTCODE_LREQ;
2150         fp->mode.lreq.pri = 0;
2151         fp->mode.lreq.src = 0;
2152         fp->mode.lreq.len = 8;
2153         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2154         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2155         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2156         xfer->send.payload[0] = htonl(0x3f);
2157         xfer->send.payload[1] = htonl(fc->nodeid);
2158         xfer->hand = fw_try_bmr_callback;
2159
2160         err = fw_asyreq(fc, -1, xfer);
2161         if (err) {
2162                 fw_xfer_free_buf(xfer);
2163                 return;
2164         }
2165         return;
2166 }
2167
2168 #ifdef FW_VMACCESS
2169 /*
2170  * Software implementation for physical memory block access.
2171  * XXX:Too slow, useful for debug purpose only.
2172  */
2173 static void
2174 fw_vmaccess(struct fw_xfer *xfer)
2175 {
2176         struct fw_pkt *rfp, *sfp = NULL;
2177         uint32_t *ld = (uint32_t *)xfer->recv.buf;
2178
2179         printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2180             xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]),
2181             ntohl(ld[3]));
2182         printf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]),
2183             ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2184         if (xfer->resp != 0) {
2185                 fw_xfer_free(xfer);
2186                 return;
2187         }
2188         if (xfer->recv.buf == NULL) {
2189                 fw_xfer_free(xfer);
2190                 return;
2191         }
2192         rfp = (struct fw_pkt *)xfer->recv.buf;
2193         switch (rfp->mode.hdr.tcode) {
2194                 /* XXX need fix for 64bit arch */
2195                 case FWTCODE_WREQB:
2196                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2197                         xfer->send.len = 12;
2198                         sfp = (struct fw_pkt *)xfer->send.buf;
2199                         bcopy(rfp->mode.wreqb.payload,
2200                             (caddr_t)ntohl(rfp->mode.wreqb.dest_lo),s
2201                             ntohs(rfp->mode.wreqb.len));
2202                         sfp->mode.wres.tcode = FWTCODE_WRES;
2203                         sfp->mode.wres.rtcode = 0;
2204                         break;
2205                 case FWTCODE_WREQQ:
2206                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2207                         xfer->send.len = 12;
2208                         sfp->mode.wres.tcode = FWTCODE_WRES;
2209                         *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) =
2210                             rfp->mode.wreqq.data;
2211                         sfp->mode.wres.rtcode = 0;
2212                         break;
2213                 case FWTCODE_RREQB:
2214                         xfer->send.buf = malloc(16 + rfp->mode.rreqb.len,
2215                             M_FW, M_NOWAIT);
2216                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2217                         sfp = (struct fw_pkt *)xfer->send.buf;
2218                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2219                             sfp->mode.rresb.payload,
2220                             ntohs(rfp->mode.rreqb.len));
2221                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2222                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2223                         sfp->mode.rresb.rtcode = 0;
2224                         sfp->mode.rresb.extcode = 0;
2225                         break;
2226                 case FWTCODE_RREQQ:
2227                         xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2228                         xfer->send.len = 16;
2229                         sfp = (struct fw_pkt *)xfer->send.buf;
2230                         sfp->mode.rresq.data =
2231                             *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2232                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2233                         sfp->mode.rresb.rtcode = 0;
2234                         break;
2235                 default:
2236                         fw_xfer_free(xfer);
2237                         return;
2238         }
2239         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2240         xfer->dst = ntohs(rfp->mode.hdr.src);
2241         xfer->hand = fw_xfer_free;
2242
2243         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2244         sfp->mode.hdr.pri = 0;
2245
2246         fw_asyreq(xfer->fc, -1, xfer);
2247 /**/
2248         return;
2249 }
2250 #endif
2251
2252 /*
2253  * CRC16 check-sum for IEEE1394 register blocks.
2254  */
2255 uint16_t
2256 fw_crc16(uint32_t *ptr, uint32_t len)
2257 {
2258         uint32_t i, sum, crc = 0;
2259         int shift;
2260         len = (len + 3) & ~3;
2261         for (i = 0; i < len; i += 4) {
2262                 for (shift = 28; shift >= 0; shift -= 4) {
2263                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2264                         crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum;
2265                 }
2266                 crc &= 0xffff;
2267         }
2268         return ((uint16_t) crc);
2269 }
2270
2271 /*
2272  * Find the root node, if it is not
2273  * Cycle Master Capable, then we should
2274  * override this and become the Cycle
2275  * Master
2276  */
2277 static int
2278 fw_bmr(struct firewire_comm *fc)
2279 {
2280         struct fw_device fwdev;
2281         union fw_self_id *self_id;
2282         int cmstr;
2283         uint32_t quad;
2284
2285         /* Check to see if the current root node is cycle master capable */
2286         self_id = fw_find_self_id(fc, fc->max_node);
2287         if (fc->max_node > 0) {
2288                 /* XXX check cmc bit of businfo block rather than contender */
2289                 if (self_id->p0.link_active && self_id->p0.contender)
2290                         cmstr = fc->max_node;
2291                 else {
2292                         device_printf(fc->bdev,
2293                             "root node is not cycle master capable\n");
2294                         /* XXX shall we be the cycle master? */
2295                         cmstr = fc->nodeid;
2296                         /* XXX need bus reset */
2297                 }
2298         } else
2299                 cmstr = -1;
2300
2301         device_printf(fc->bdev, "bus manager %d %s\n",
2302                 CSRARC(fc, BUS_MGR_ID),
2303                 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : "");
2304         if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2305                 /* We are not the bus manager */
2306                 return (0);
2307         }
2308
2309         /* Optimize gapcount */
2310         if (fc->max_hop <= MAX_GAPHOP)
2311                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2312         /* If we are the cycle master, nothing to do */
2313         if (cmstr == fc->nodeid || cmstr == -1)
2314                 return 0;
2315         /* Bus probe has not finished, make dummy fwdev for cmstr */
2316         bzero(&fwdev, sizeof(fwdev));
2317         fwdev.fc = fc;
2318         fwdev.dst = cmstr;
2319         fwdev.speed = 0;
2320         fwdev.maxrec = 8; /* 512 */
2321         fwdev.status = FWDEVINIT;
2322         /* Set cmstr bit on the cycle master */
2323         quad = htonl(1 << 8);
2324         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2325             0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2326
2327         return 0;
2328 }
2329
2330 int
2331 fw_open_isodma(struct firewire_comm *fc, int tx)
2332 {
2333         struct fw_xferq **xferqa;
2334         struct fw_xferq *xferq;
2335         int i;
2336
2337         if (tx)
2338                 xferqa = &fc->it[0];
2339         else
2340                 xferqa = &fc->ir[0];
2341
2342         FW_GLOCK(fc);
2343         for (i = 0; i < fc->nisodma; i++) {
2344                 xferq = xferqa[i];
2345                 if ((xferq->flag & FWXFERQ_OPEN) == 0) {
2346                         xferq->flag |= FWXFERQ_OPEN;
2347                         break;
2348                 }
2349         }
2350         if (i == fc->nisodma) {
2351                 printf("no free dma channel (tx=%d)\n", tx);
2352                 i = -1;
2353         }
2354         FW_GUNLOCK(fc);
2355         return (i);
2356 }
2357
2358 static int
2359 fw_modevent(module_t mode, int type, void *data)
2360 {
2361         int err = 0;
2362         static eventhandler_tag fwdev_ehtag = NULL;
2363
2364         switch (type) {
2365         case MOD_LOAD:
2366                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2367                     fwdev_clone, 0, 1000);
2368                 break;
2369         case MOD_UNLOAD:
2370                 if (fwdev_ehtag != NULL)
2371                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2372                 break;
2373         case MOD_SHUTDOWN:
2374                 break;
2375         default:
2376                 return (EOPNOTSUPP);
2377         }
2378         return (err);
2379 }
2380
2381
2382 DRIVER_MODULE(firewire, fwohci, firewire_driver, firewire_devclass,
2383     fw_modevent,0);
2384 MODULE_VERSION(firewire, 1);