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
  52 #if defined(__DragonFly__) || __FreeBSD_version < 500000
  53 #include <machine/clock.h>      /* for DELAY() */
  54 #endif
  55
  56 #include <sys/bus.h>            /* used by smbus and newbus */
  57 #include <machine/bus.h>
  58
  59 #ifdef __DragonFly__
  60 #include "firewire.h"
  61 #include "firewirereg.h"
  62 #include "fwmem.h"
  63 #include "iec13213.h"
  64 #include "iec68113.h"
  65 #else
  66 #include <dev/firewire/firewire.h>
  67 #include <dev/firewire/firewirereg.h>
  68 #include <dev/firewire/fwmem.h>
  69 #include <dev/firewire/iec13213.h>
  70 #include <dev/firewire/iec68113.h>
  71 #endif
  72
  73 struct crom_src_buf {
  74         struct crom_src src;
  75         struct crom_chunk root;
  76         struct crom_chunk vendor;
  77         struct crom_chunk hw;
  78 };
  79
  80 int firewire_debug=0, try_bmr=1, hold_count=0;
  81 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  82         "FireWire driver debug flag");
  83 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
  84 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  85         "Try to be a bus manager");
  86 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  87         "Number of count of bus resets for removing lost device information");
  88
  89 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  90 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  91
  92 #define FW_MAXASYRTY 4
  93
  94 devclass_t firewire_devclass;
  95
  96 static void firewire_identify   (driver_t *, device_t);
  97 static int firewire_probe       (device_t);
  98 static int firewire_attach      (device_t);
  99 static int firewire_detach      (device_t);
 100 static int firewire_resume      (device_t);
 101 static void firewire_xfer_timeout(void *, int);
 102 #if 0
 103 static int firewire_shutdown    (device_t);
 104 #endif
 105 static device_t firewire_add_child(device_t, u_int, const char *, int);
 106 static void fw_try_bmr (void *);
 107 static void fw_try_bmr_callback (struct fw_xfer *);
 108 static void fw_asystart (struct fw_xfer *);
 109 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
 110 static void fw_bus_probe (struct firewire_comm *);
 111 static void fw_attach_dev (struct firewire_comm *);
 112 static void fw_bus_probe_thread(void *);
 113 #ifdef FW_VMACCESS
 114 static void fw_vmaccess (struct fw_xfer *);
 115 #endif
 116 static int fw_bmr (struct firewire_comm *);
 117 static void fw_dump_hdr(struct fw_pkt *, char *);
 118
 119 static device_method_t firewire_methods[] = {
 120         /* Device interface */
 121         DEVMETHOD(device_identify,      firewire_identify),
 122         DEVMETHOD(device_probe,         firewire_probe),
 123         DEVMETHOD(device_attach,        firewire_attach),
 124         DEVMETHOD(device_detach,        firewire_detach),
 125         DEVMETHOD(device_suspend,       bus_generic_suspend),
 126         DEVMETHOD(device_resume,        firewire_resume),
 127         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 128
 129         /* Bus interface */
 130         DEVMETHOD(bus_add_child,        firewire_add_child),
 131
 132         DEVMETHOD_END
 133 };
 134 char *linkspeed[] = {
 135         "S100", "S200", "S400", "S800",
 136         "S1600", "S3200", "undef", "undef"
 137 };
 138
 139 static char *tcode_str[] = {
 140         "WREQQ", "WREQB", "WRES",   "undef",
 141         "RREQQ", "RREQB", "RRESQ",  "RRESB",
 142         "CYCS",  "LREQ",  "STREAM", "LRES",
 143         "undef", "undef", "PHY",    "undef"
 144 };
 145
 146 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
 147 #define MAX_GAPHOP 15
 148 u_int gap_cnt[] = { 5,  5,  7,  8, 10, 13, 16, 18,
 149                    21, 24, 26, 29, 32, 35, 37, 40};
 150
 151 static driver_t firewire_driver = {
 152         "firewire",
 153         firewire_methods,
 154         sizeof(struct firewire_softc),
 155 };
 156
 157 /*
 158  * Lookup fwdev by node id.
 159  */
 160 struct fw_device *
 161 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
 162 {
 163         struct fw_device *fwdev;
 164         int s;
 165
 166         s = splfw();
 167         STAILQ_FOREACH(fwdev, &fc->devices, link)
 168                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 169                         break;
 170         splx(s);
 171
 172         return fwdev;
 173 }
 174
 175 /*
 176  * Lookup fwdev by EUI64.
 177  */
 178 struct fw_device *
 179 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
 180 {
 181         struct fw_device *fwdev;
 182         int s;
 183
 184         s = splfw();
 185         FW_GLOCK(fc);
 186         STAILQ_FOREACH(fwdev, &fc->devices, link)
 187                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 188                         break;
 189         FW_GUNLOCK(fc);
 190         splx(s);
 191
 192         if(fwdev == NULL) return NULL;
 193         if(fwdev->status == FWDEVINVAL) return NULL;
 194         return fwdev;
 195 }
 196
 197 /*
 198  * Async. request procedure for userland application.
 199  */
 200 int
 201 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
 202 {
 203         int err = 0;
 204         struct fw_xferq *xferq;
 205         int len;
 206         struct fw_pkt *fp;
 207         int tcode;
 208         struct tcode_info *info;
 209
 210         if(xfer == NULL) return EINVAL;
 211         if(xfer->hand == NULL){
 212                 printf("hand == NULL\n");
 213                 return EINVAL;
 214         }
 215         fp = &xfer->send.hdr;
 216
 217         tcode = fp->mode.common.tcode & 0xf;
 218         info = &fc->tcode[tcode];
 219         if (info->flag == 0) {
 220                 printf("invalid tcode=%x\n", tcode);
 221                 return EINVAL;
 222         }
 223
 224         /* XXX allow bus explore packets only after bus rest */
 225         if ((fc->status < FWBUSEXPLORE) &&
 226             ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
 227             (fp->mode.rreqq.dest_lo  < 0xf0000000) ||
 228             (fp->mode.rreqq.dest_lo >= 0xf0001000))) {
 229                 xfer->resp = EAGAIN;
 230                 xfer->flag = FWXF_BUSY;
 231                 return (EAGAIN);
 232         }
 233
 234         if (info->flag & FWTI_REQ)
 235                 xferq = fc->atq;
 236         else
 237                 xferq = fc->ats;
 238         len = info->hdr_len;
 239         if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
 240                 printf("send.pay_len > maxrec\n");
 241                 return EINVAL;
 242         }
 243         if (info->flag & FWTI_BLOCK_STR)
 244                 len = fp->mode.stream.len;
 245         else if (info->flag & FWTI_BLOCK_ASY)
 246                 len = fp->mode.rresb.len;
 247         else
 248                 len = 0;
 249         if (len != xfer->send.pay_len){
 250                 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
 251                     len, xfer->send.pay_len, tcode_str[tcode], tcode);
 252                 return EINVAL;
 253         }
 254
 255         if(xferq->start == NULL){
 256                 printf("xferq->start == NULL\n");
 257                 return EINVAL;
 258         }
 259         if(!(xferq->queued < xferq->maxq)){
 260                 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
 261                         xferq->queued);
 262                 return EAGAIN;
 263         }
 264
 265         xfer->tl = -1;
 266         if (info->flag & FWTI_TLABEL) {
 267                 if (fw_get_tlabel(fc, xfer) < 0)
 268                         return EAGAIN;
 269         }
 270
 271         xfer->resp = 0;
 272         xfer->fc = fc;
 273         xfer->q = xferq;
 274
 275         fw_asystart(xfer);
 276         return err;
 277 }
 278 /*
 279  * Wakeup blocked process.
 280  */
 281 void
 282 fw_xferwake(struct fw_xfer *xfer)
 283 {
 284         struct mtx *lock = &xfer->fc->wait_lock;
 285
 286         mtx_lock(lock);
 287         xfer->flag |= FWXF_WAKE;
 288         mtx_unlock(lock);
 289
 290         wakeup(xfer);
 291         return;
 292 }
 293
 294 int
 295 fw_xferwait(struct fw_xfer *xfer)
 296 {
 297         struct mtx *lock = &xfer->fc->wait_lock;
 298         int err = 0;
 299
 300         mtx_lock(lock);
 301         if ((xfer->flag & FWXF_WAKE) == 0)
 302                 err = msleep((void *)xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0);
 303         mtx_unlock(lock);
 304
 305         return (err);
 306 }
 307
 308 /*
 309  * Async. request with given xfer structure.
 310  */
 311 static void
 312 fw_asystart(struct fw_xfer *xfer)
 313 {
 314         struct firewire_comm *fc = xfer->fc;
 315         int s;
 316         s = splfw();
 317         /* Protect from interrupt/timeout */
 318         FW_GLOCK(fc);
 319         xfer->flag = FWXF_INQ;
 320         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 321 #if 0
 322         xfer->q->queued ++;
 323 #endif
 324         FW_GUNLOCK(fc);
 325         splx(s);
 326         /* XXX just queue for mbuf */
 327         if (xfer->mbuf == NULL)
 328                 xfer->q->start(fc);
 329         return;
 330 }
 331
 332 static void
 333 firewire_identify(driver_t *driver, device_t parent)
 334 {
 335         BUS_ADD_CHILD(parent, 0, "firewire", -1);
 336 }
 337
 338 static int
 339 firewire_probe(device_t dev)
 340 {
 341         device_set_desc(dev, "IEEE1394(FireWire) bus");
 342         return (0);
 343 }
 344
 345 static void
 346 firewire_xfer_timeout(void *arg, int pending)
 347 {
 348         struct firewire_comm *fc = (struct firewire_comm *)arg;
 349         struct fw_xfer *xfer, *txfer;
 350         struct timeval tv;
 351         struct timeval split_timeout;
 352         STAILQ_HEAD(, fw_xfer) xfer_timeout;
 353         int i, s;
 354
 355         split_timeout.tv_sec = 0;
 356         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 357
 358         microtime(&tv);
 359         timevalsub(&tv, &split_timeout);
 360         STAILQ_INIT(&xfer_timeout);
 361
 362         s = splfw();
 363         mtx_lock(&fc->tlabel_lock);
 364         for (i = 0; i < 0x40; i ++) {
 365                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 366                         if ((xfer->flag & FWXF_SENT) == 0)
 367                                 /* not sent yet */
 368                                 break;
 369                         if (timevalcmp(&xfer->tv, &tv, >))
 370                                 /* the rests are newer than this */
 371                                 break;
 372                         device_printf(fc->bdev,
 373                                 "split transaction timeout: "
 374                                 "tl=0x%x flag=0x%02x\n", i, xfer->flag);
 375                         fw_dump_hdr(&xfer->send.hdr, "send");
 376                         xfer->resp = ETIMEDOUT;
 377                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 378                         STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
 379                 }
 380         }
 381         mtx_unlock(&fc->tlabel_lock);
 382         splx(s);
 383         fc->timeout(fc);
 384
 385         STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer)
 386                 xfer->hand(xfer);
 387 }
 388
 389 #define WATCHDOG_HZ 10
 390 static void
 391 firewire_watchdog(void *arg)
 392 {
 393         struct firewire_comm *fc;
 394         static int watchdog_clock = 0;
 395
 396         fc = (struct firewire_comm *)arg;
 397
 398         /*
 399          * At boot stage, the device interrupt is disabled and
 400          * We encounter a timeout easily. To avoid this,
 401          * ignore clock interrupt for a while.
 402          */
 403         if (watchdog_clock > WATCHDOG_HZ * 15)
 404                 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout);
 405         else
 406                 watchdog_clock ++;
 407
 408         callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ,
 409                         (void *)firewire_watchdog, (void *)fc);
 410 }
 411
 412 /*
 413  * The attach routine.
 414  */
 415 static int
 416 firewire_attach(device_t dev)
 417 {
 418         int unit;
 419         struct firewire_softc *sc = device_get_softc(dev);
 420         device_t pa = device_get_parent(dev);
 421         struct firewire_comm *fc;
 422
 423         fc = (struct firewire_comm *)device_get_softc(pa);
 424         sc->fc = fc;
 425         fc->status = FWBUSNOTREADY;
 426
 427         unit = device_get_unit(dev);
 428         if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
 429
 430         fwdev_makedev(sc);
 431
 432         fc->crom_src_buf = (struct crom_src_buf *)malloc(
 433                                 sizeof(struct crom_src_buf),
 434                                 M_FW, M_NOWAIT | M_ZERO);
 435         if (fc->crom_src_buf == NULL) {
 436                 device_printf(fc->dev, "%s: Malloc Failure crom src buff\n", __func__);
 437                 return ENOMEM;
 438         }
 439         fc->topology_map = (struct fw_topology_map *)malloc(
 440                                 sizeof(struct fw_topology_map),
 441                                 M_FW, M_NOWAIT | M_ZERO);
 442         if (fc->topology_map == NULL) {
 443                 device_printf(fc->dev, "%s: Malloc Failure topology map\n", __func__);
 444                 free(fc->crom_src_buf, M_FW);
 445                 return ENOMEM;
 446         }
 447         fc->speed_map = (struct fw_speed_map *)malloc(
 448                                 sizeof(struct fw_speed_map),
 449                                 M_FW, M_NOWAIT | M_ZERO);
 450         if (fc->speed_map == NULL) {
 451                 device_printf(fc->dev, "%s: Malloc Failure speed map\n", __func__);
 452                 free(fc->crom_src_buf, M_FW);
 453                 free(fc->topology_map, M_FW);
 454                 return ENOMEM;
 455         }
 456
 457         mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF);
 458         mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF);
 459         CALLOUT_INIT(&fc->timeout_callout);
 460         CALLOUT_INIT(&fc->bmr_callout);
 461         CALLOUT_INIT(&fc->busprobe_callout);
 462         TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, (void *)fc);
 463
 464         callout_reset(&sc->fc->timeout_callout, hz,
 465                         (void *)firewire_watchdog, (void *)sc->fc);
 466
 467         /* create thread */
 468         kproc_create(fw_bus_probe_thread, (void *)fc, &fc->probe_thread,
 469                 0, 0, "fw%d_probe", unit);
 470
 471         /* Locate our children */
 472         bus_generic_probe(dev);
 473
 474         /* launch attachement of the added children */
 475         bus_generic_attach(dev);
 476
 477         /* bus_reset */
 478         FW_GLOCK(fc);
 479         fw_busreset(fc, FWBUSNOTREADY);
 480         FW_GUNLOCK(fc);
 481         fc->ibr(fc);
 482
 483         return 0;
 484 }
 485
 486 /*
 487  * Attach it as child.
 488  */
 489 static device_t
 490 firewire_add_child(device_t dev, u_int order, const char *name, int unit)
 491 {
 492         device_t child;
 493         struct firewire_softc *sc;
 494
 495         sc = (struct firewire_softc *)device_get_softc(dev);
 496         child = device_add_child(dev, name, unit);
 497         if (child) {
 498                 device_set_ivars(child, sc->fc);
 499                 device_probe_and_attach(child);
 500         }
 501
 502         return child;
 503 }
 504
 505 static int
 506 firewire_resume(device_t dev)
 507 {
 508         struct firewire_softc *sc;
 509
 510         sc = (struct firewire_softc *)device_get_softc(dev);
 511         sc->fc->status = FWBUSNOTREADY;
 512
 513         bus_generic_resume(dev);
 514
 515         return(0);
 516 }
 517
 518 /*
 519  * Dettach it.
 520  */
 521 static int
 522 firewire_detach(device_t dev)
 523 {
 524         struct firewire_softc *sc;
 525         struct firewire_comm *fc;
 526         struct fw_device *fwdev, *fwdev_next;
 527         int err;
 528
 529         sc = (struct firewire_softc *)device_get_softc(dev);
 530         fc = sc->fc;
 531         mtx_lock(&fc->wait_lock);
 532         fc->status = FWBUSDETACH;
 533         wakeup(fc);
 534         if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60))
 535                 printf("firewire probe thread didn't die\n");
 536         mtx_unlock(&fc->wait_lock);
 537
 538         if (fc->arq !=0 && fc->arq->maxq > 0)
 539                 fw_drain_txq(fc);
 540
 541         if ((err = fwdev_destroydev(sc)) != 0)
 542                 return err;
 543
 544         if ((err = bus_generic_detach(dev)) != 0)
 545                 return err;
 546
 547         callout_stop(&fc->timeout_callout);
 548         callout_stop(&fc->bmr_callout);
 549         callout_stop(&fc->busprobe_callout);
 550
 551         /* XXX xfer_free and untimeout on all xfers */
 552         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
 553                                                         fwdev = fwdev_next) {
 554                 fwdev_next = STAILQ_NEXT(fwdev, link);
 555                 free(fwdev, M_FW);
 556         }
 557         free(fc->topology_map, M_FW);
 558         free(fc->speed_map, M_FW);
 559         free(fc->crom_src_buf, M_FW);
 560
 561         mtx_destroy(&fc->tlabel_lock);
 562         mtx_destroy(&fc->wait_lock);
 563         return(0);
 564 }
 565 #if 0
 566 static int
 567 firewire_shutdown( device_t dev )
 568 {
 569         return 0;
 570 }
 571 #endif
 572
 573
 574 static void
 575 fw_xferq_drain(struct fw_xferq *xferq)
 576 {
 577         struct fw_xfer *xfer;
 578
 579         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 580                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 581 #if 0
 582                 xferq->queued --;
 583 #endif
 584                 xfer->resp = EAGAIN;
 585                 xfer->flag = FWXF_SENTERR;
 586                 fw_xfer_done(xfer);
 587         }
 588 }
 589
 590 void
 591 fw_drain_txq(struct firewire_comm *fc)
 592 {
 593         struct fw_xfer *xfer, *txfer;
 594         STAILQ_HEAD(, fw_xfer) xfer_drain;
 595         int i;
 596
 597         STAILQ_INIT(&xfer_drain);
 598
 599         FW_GLOCK(fc);
 600         fw_xferq_drain(fc->atq);
 601         fw_xferq_drain(fc->ats);
 602         for(i = 0; i < fc->nisodma; i++)
 603                 fw_xferq_drain(fc->it[i]);
 604         FW_GUNLOCK(fc);
 605
 606         mtx_lock(&fc->tlabel_lock);
 607         for (i = 0; i < 0x40; i ++)
 608                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 609                         if (firewire_debug)
 610                                 printf("tl=%d flag=%d\n", i, xfer->flag);
 611                         xfer->resp = EAGAIN;
 612                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 613                         STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
 614                 }
 615         mtx_unlock(&fc->tlabel_lock);
 616
 617         STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer)
 618                 xfer->hand(xfer);
 619 }
 620
 621 static void
 622 fw_reset_csr(struct firewire_comm *fc)
 623 {
 624         int i;
 625
 626         CSRARC(fc, STATE_CLEAR)
 627                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 628         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 629         CSRARC(fc, NODE_IDS) = 0x3f;
 630
 631         CSRARC(fc, TOPO_MAP + 8) = 0;
 632         fc->irm = -1;
 633
 634         fc->max_node = -1;
 635
 636         for(i = 2; i < 0x100/4 - 2 ; i++){
 637                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 638         }
 639         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 640         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 641         CSRARC(fc, RESET_START) = 0;
 642         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 643         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 644         CSRARC(fc, CYCLE_TIME) = 0x0;
 645         CSRARC(fc, BUS_TIME) = 0x0;
 646         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 647         CSRARC(fc, BANDWIDTH_AV) = 4915;
 648         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 649         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 650         CSRARC(fc, IP_CHANNELS) = (1 << 31);
 651
 652         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 653         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 654         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 655                                 1 << 28 | 0xff << 16 | 0x09 << 8;
 656         CSRARC(fc, CONF_ROM + 0xc) = 0;
 657
 658 /* DV depend CSRs see blue book */
 659         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 660         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 661
 662         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
 663         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 664 }
 665
 666 static void
 667 fw_init_crom(struct firewire_comm *fc)
 668 {
 669         struct crom_src *src;
 670
 671         src = &fc->crom_src_buf->src;
 672         bzero(src, sizeof(struct crom_src));
 673
 674         /* BUS info sample */
 675         src->hdr.info_len = 4;
 676
 677         src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 678
 679         src->businfo.irmc = 1;
 680         src->businfo.cmc = 1;
 681         src->businfo.isc = 1;
 682         src->businfo.bmc = 1;
 683         src->businfo.pmc = 0;
 684         src->businfo.cyc_clk_acc = 100;
 685         src->businfo.max_rec = fc->maxrec;
 686         src->businfo.max_rom = MAXROM_4;
 687 #define FW_GENERATION_CHANGEABLE 2
 688         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 689         src->businfo.link_spd = fc->speed;
 690
 691         src->businfo.eui64.hi = fc->eui.hi;
 692         src->businfo.eui64.lo = fc->eui.lo;
 693
 694         STAILQ_INIT(&src->chunk_list);
 695
 696         fc->crom_src = src;
 697         fc->crom_root = &fc->crom_src_buf->root;
 698 }
 699
 700 static void
 701 fw_reset_crom(struct firewire_comm *fc)
 702 {
 703         struct crom_src_buf *buf;
 704         struct crom_src *src;
 705         struct crom_chunk *root;
 706
 707         buf =  fc->crom_src_buf;
 708         src = fc->crom_src;
 709         root = fc->crom_root;
 710
 711         STAILQ_INIT(&src->chunk_list);
 712
 713         bzero(root, sizeof(struct crom_chunk));
 714         crom_add_chunk(src, NULL, root, 0);
 715         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 716         /* private company_id */
 717         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 718 #ifdef __DragonFly__
 719         crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
 720         crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
 721 #else
 722         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 723         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 724 #endif
 725         mtx_lock(&prison0.pr_mtx);
 726         crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname);
 727         mtx_unlock(&prison0.pr_mtx);
 728 }
 729
 730 /*
 731  * Called after bus reset.
 732  */
 733 void
 734 fw_busreset(struct firewire_comm *fc, uint32_t new_status)
 735 {
 736         struct firewire_dev_comm *fdc;
 737         struct crom_src *src;
 738         device_t *devlistp;
 739         uint32_t *newrom;
 740         int i, devcnt;
 741
 742         FW_GLOCK_ASSERT(fc);
 743         if (fc->status == FWBUSMGRELECT)
 744                 callout_stop(&fc->bmr_callout);
 745
 746         fc->status = new_status;
 747         fw_reset_csr(fc);
 748
 749         if (fc->status == FWBUSNOTREADY)
 750                 fw_init_crom(fc);
 751
 752         fw_reset_crom(fc);
 753
 754         if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
 755                 for( i = 0 ; i < devcnt ; i++)
 756                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
 757                                 fdc = device_get_softc(devlistp[i]);
 758                                 if (fdc->post_busreset != NULL)
 759                                         fdc->post_busreset(fdc);
 760                         }
 761                 free(devlistp, M_TEMP);
 762         }
 763
 764         src = &fc->crom_src_buf->src;
 765         /*
 766          * If the old config rom needs to be overwritten,
 767          * bump the businfo.generation indicator to
 768          * indicate that we need to be reprobed
 769          * See 1394a-2000 8.3.2.5.4 for more details.
 770          * generation starts at 2 and rolls over at 0xF
 771          * back to 2.
 772          *
 773          * A generation of 0 indicates a device
 774          * that is not 1394a-2000 compliant.
 775          * A generation of 1 indicates a device that
 776          * does not change it's Bus Info Block or
 777          * Configuration ROM.
 778          */
 779 #define FW_MAX_GENERATION 0xF
 780         newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
 781         src = &fc->crom_src_buf->src;
 782         crom_load(src, newrom, CROMSIZE);
 783         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 784                 if ( src->businfo.generation++ > FW_MAX_GENERATION )
 785                         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 786                 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
 787         }
 788         free(newrom, M_FW);
 789
 790 }
 791
 792 /* Call once after reboot */
 793 void fw_init(struct firewire_comm *fc)
 794 {
 795         int i;
 796 #ifdef FW_VMACCESS
 797         struct fw_xfer *xfer;
 798         struct fw_bind *fwb;
 799 #endif
 800
 801         fc->arq->queued = 0;
 802         fc->ars->queued = 0;
 803         fc->atq->queued = 0;
 804         fc->ats->queued = 0;
 805
 806         fc->arq->buf = NULL;
 807         fc->ars->buf = NULL;
 808         fc->atq->buf = NULL;
 809         fc->ats->buf = NULL;
 810
 811         fc->arq->flag = 0;
 812         fc->ars->flag = 0;
 813         fc->atq->flag = 0;
 814         fc->ats->flag = 0;
 815
 816         STAILQ_INIT(&fc->atq->q);
 817         STAILQ_INIT(&fc->ats->q);
 818
 819         for( i = 0 ; i < fc->nisodma ; i ++ ){
 820                 fc->it[i]->queued = 0;
 821                 fc->ir[i]->queued = 0;
 822
 823                 fc->it[i]->start = NULL;
 824                 fc->ir[i]->start = NULL;
 825
 826                 fc->it[i]->buf = NULL;
 827                 fc->ir[i]->buf = NULL;
 828
 829                 fc->it[i]->flag = FWXFERQ_STREAM;
 830                 fc->ir[i]->flag = FWXFERQ_STREAM;
 831
 832                 STAILQ_INIT(&fc->it[i]->q);
 833                 STAILQ_INIT(&fc->ir[i]->q);
 834         }
 835
 836         fc->arq->maxq = FWMAXQUEUE;
 837         fc->ars->maxq = FWMAXQUEUE;
 838         fc->atq->maxq = FWMAXQUEUE;
 839         fc->ats->maxq = FWMAXQUEUE;
 840
 841         for( i = 0 ; i < fc->nisodma ; i++){
 842                 fc->ir[i]->maxq = FWMAXQUEUE;
 843                 fc->it[i]->maxq = FWMAXQUEUE;
 844         }
 845
 846         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 847         CSRARC(fc, TOPO_MAP + 4) = 1;
 848         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 849         CSRARC(fc, SPED_MAP + 4) = 1;
 850
 851         STAILQ_INIT(&fc->devices);
 852
 853 /* Initialize Async handlers */
 854         STAILQ_INIT(&fc->binds);
 855         for( i = 0 ; i < 0x40 ; i++){
 856                 STAILQ_INIT(&fc->tlabels[i]);
 857         }
 858
 859 /* DV depend CSRs see blue book */
 860 #if 0
 861         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 862         CSRARC(fc, oPCR) = 0x8000007a;
 863         for(i = 4 ; i < 0x7c/4 ; i+=4){
 864                 CSRARC(fc, i + oPCR) = 0x8000007a;
 865         }
 866
 867         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 868         CSRARC(fc, iPCR) = 0x803f0000;
 869         for(i = 4 ; i < 0x7c/4 ; i+=4){
 870                 CSRARC(fc, i + iPCR) = 0x0;
 871         }
 872 #endif
 873
 874         fc->crom_src_buf = NULL;
 875
 876 #ifdef FW_VMACCESS
 877         xfer = fw_xfer_alloc();
 878         if(xfer == NULL) return;
 879
 880         fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT);
 881         if(fwb == NULL){
 882                 fw_xfer_free(xfer);
 883                 return;
 884         }
 885         xfer->hand = fw_vmaccess;
 886         xfer->fc = fc;
 887         xfer->sc = NULL;
 888
 889         fwb->start_hi = 0x2;
 890         fwb->start_lo = 0;
 891         fwb->addrlen = 0xffffffff;
 892         fwb->xfer = xfer;
 893         fw_bindadd(fc, fwb);
 894 #endif
 895 }
 896
 897 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
 898     ((fwb)->end < (addr))?1:0)
 899
 900 /*
 901  * To lookup bound process from IEEE1394 address.
 902  */
 903 struct fw_bind *
 904 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
 905 {
 906         u_int64_t addr;
 907         struct fw_bind *tfw, *r = NULL;
 908
 909         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 910         FW_GLOCK(fc);
 911         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 912                 if (BIND_CMP(addr, tfw) == 0) {
 913                         r = tfw;
 914                         break;
 915                 }
 916         FW_GUNLOCK(fc);
 917         return(r);
 918 }
 919
 920 /*
 921  * To bind IEEE1394 address block to process.
 922  */
 923 int
 924 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 925 {
 926         struct fw_bind *tfw, *prev = NULL;
 927         int r = 0;
 928
 929         if (fwb->start > fwb->end) {
 930                 printf("%s: invalid range\n", __func__);
 931                 return EINVAL;
 932         }
 933
 934         FW_GLOCK(fc);
 935         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 936                 if (fwb->end < tfw->start)
 937                         break;
 938                 prev = tfw;
 939         }
 940         if (prev == NULL)
 941                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 942         else if (prev->end < fwb->start)
 943                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 944         else {
 945                 printf("%s: bind failed\n", __func__);
 946                 r = EBUSY;
 947         }
 948         FW_GUNLOCK(fc);
 949         return (r);
 950 }
 951
 952 /*
 953  * To free IEEE1394 address block.
 954  */
 955 int
 956 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 957 {
 958 #if 0
 959         struct fw_xfer *xfer, *next;
 960 #endif
 961         struct fw_bind *tfw;
 962         int s;
 963
 964         s = splfw();
 965         FW_GLOCK(fc);
 966         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 967                 if (tfw == fwb) {
 968                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 969                         goto found;
 970                 }
 971
 972         printf("%s: no such binding\n", __func__);
 973         FW_GUNLOCK(fc);
 974         splx(s);
 975         return (1);
 976 found:
 977 #if 0
 978         /* shall we do this? */
 979         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 980                 next = STAILQ_NEXT(xfer, link);
 981                 fw_xfer_free(xfer);
 982         }
 983         STAILQ_INIT(&fwb->xferlist);
 984 #endif
 985         FW_GUNLOCK(fc);
 986
 987         splx(s);
 988         return 0;
 989 }
 990
 991 int
 992 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
 993     int slen, int rlen, int n,
 994     struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
 995 {
 996         int i, s;
 997         struct fw_xfer *xfer;
 998
 999         for (i = 0; i < n; i++) {
1000                 xfer = fw_xfer_alloc_buf(type, slen, rlen);
1001                 if (xfer == NULL)
1002                         return (n);
1003                 xfer->fc = fc;
1004                 xfer->sc = sc;
1005                 xfer->hand = hand;
1006                 s = splfw();
1007                 STAILQ_INSERT_TAIL(q, xfer, link);
1008                 splx(s);
1009         }
1010         return (n);
1011 }
1012
1013 void
1014 fw_xferlist_remove(struct fw_xferlist *q)
1015 {
1016         struct fw_xfer *xfer, *next;
1017
1018         for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
1019                 next = STAILQ_NEXT(xfer, link);
1020                 fw_xfer_free_buf(xfer);
1021         }
1022         STAILQ_INIT(q);
1023 }
1024 /*
1025  * dump packet header
1026  */
1027 static void
1028 fw_dump_hdr(struct fw_pkt *fp, char *prefix)
1029 {
1030         printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
1031             "src=0x%03x\n", prefix,
1032             fp->mode.hdr.dst & 0x3f,
1033             fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
1034             fp->mode.hdr.tcode, fp->mode.hdr.pri,
1035             fp->mode.hdr.src);
1036 }
1037
1038 /*
1039  * To free transaction label.
1040  */
1041 static void
1042 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
1043 {
1044         struct fw_xfer *txfer;
1045         int s;
1046
1047         if (xfer->tl < 0)
1048                 return;
1049
1050         s = splfw();
1051         mtx_lock(&fc->tlabel_lock);
1052 #if 1   /* make sure the label is allocated */
1053         STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
1054                 if(txfer == xfer)
1055                         break;
1056         if (txfer == NULL) {
1057                 printf("%s: the xfer is not in the queue "
1058                     "(tlabel=%d, flag=0x%x)\n",
1059                     __FUNCTION__, xfer->tl, xfer->flag);
1060                 fw_dump_hdr(&xfer->send.hdr, "send");
1061                 fw_dump_hdr(&xfer->recv.hdr, "recv");
1062                 kdb_backtrace();
1063                 mtx_unlock(&fc->tlabel_lock);
1064                 splx(s);
1065                 return;
1066         }
1067 #endif
1068
1069         STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
1070         mtx_unlock(&fc->tlabel_lock);
1071         splx(s);
1072         return;
1073 }
1074
1075 /*
1076  * To obtain XFER structure by transaction label.
1077  */
1078 static struct fw_xfer *
1079 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
1080 {
1081         struct fw_xfer *xfer;
1082         int s = splfw();
1083         int req;
1084
1085         mtx_lock(&fc->tlabel_lock);
1086         STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
1087                 if(xfer->send.hdr.mode.hdr.dst == node) {
1088                         mtx_unlock(&fc->tlabel_lock);
1089                         splx(s);
1090                         KASSERT(xfer->tl == tlabel,
1091                                 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel));
1092                         /* extra sanity check */
1093                         req = xfer->send.hdr.mode.hdr.tcode;
1094                         if (xfer->fc->tcode[req].valid_res != tcode) {
1095                                 printf("%s: invalid response tcode "
1096                                     "(0x%x for 0x%x)\n", __FUNCTION__,
1097                                     tcode, req);
1098                                 return(NULL);
1099                         }
1100
1101                         if (firewire_debug > 2)
1102                                 printf("fw_tl2xfer: found tl=%d\n", tlabel);
1103                         return(xfer);
1104                 }
1105         mtx_unlock(&fc->tlabel_lock);
1106         if (firewire_debug > 1)
1107                 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
1108         splx(s);
1109         return(NULL);
1110 }
1111
1112 /*
1113  * To allocate IEEE1394 XFER structure.
1114  */
1115 struct fw_xfer *
1116 fw_xfer_alloc(struct malloc_type *type)
1117 {
1118         struct fw_xfer *xfer;
1119
1120         xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
1121         if (xfer == NULL)
1122                 return xfer;
1123
1124         xfer->malloc = type;
1125
1126         return xfer;
1127 }
1128
1129 struct fw_xfer *
1130 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
1131 {
1132         struct fw_xfer *xfer;
1133
1134         xfer = fw_xfer_alloc(type);
1135         if (xfer == NULL)
1136                 return(NULL);
1137         xfer->send.pay_len = send_len;
1138         xfer->recv.pay_len = recv_len;
1139         if (send_len > 0) {
1140                 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
1141                 if (xfer->send.payload == NULL) {
1142                         fw_xfer_free(xfer);
1143                         return(NULL);
1144                 }
1145         }
1146         if (recv_len > 0) {
1147                 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1148                 if (xfer->recv.payload == NULL) {
1149                         if (xfer->send.payload != NULL)
1150                                 free(xfer->send.payload, type);
1151                         fw_xfer_free(xfer);
1152                         return(NULL);
1153                 }
1154         }
1155         return(xfer);
1156 }
1157
1158 /*
1159  * IEEE1394 XFER post process.
1160  */
1161 void
1162 fw_xfer_done(struct fw_xfer *xfer)
1163 {
1164         if (xfer->hand == NULL) {
1165                 printf("hand == NULL\n");
1166                 return;
1167         }
1168
1169         if (xfer->fc == NULL)
1170                 panic("fw_xfer_done: why xfer->fc is NULL?");
1171
1172         fw_tl_free(xfer->fc, xfer);
1173         xfer->hand(xfer);
1174 }
1175
1176 void
1177 fw_xfer_unload(struct fw_xfer* xfer)
1178 {
1179         int s;
1180
1181         if(xfer == NULL ) return;
1182         if(xfer->flag & FWXF_INQ){
1183                 printf("fw_xfer_free FWXF_INQ\n");
1184                 s = splfw();
1185                 FW_GLOCK(xfer->fc);
1186                 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1187 #if 0
1188                 xfer->q->queued --;
1189 #endif
1190                 FW_GUNLOCK(xfer->fc);
1191                 splx(s);
1192         }
1193         if (xfer->fc != NULL) {
1194 #if 1
1195                 if(xfer->flag & FWXF_START)
1196                         /*
1197                          * This could happen if:
1198                          *  1. We call fwohci_arcv() before fwohci_txd().
1199                          *  2. firewire_watch() is called.
1200                          */
1201                         printf("fw_xfer_free FWXF_START\n");
1202 #endif
1203         }
1204         xfer->flag = FWXF_INIT;
1205         xfer->resp = 0;
1206 }
1207 /*
1208  * To free IEEE1394 XFER structure.
1209  */
1210 void
1211 fw_xfer_free_buf( struct fw_xfer* xfer)
1212 {
1213         if (xfer == NULL) {
1214                 printf("%s: xfer == NULL\n", __func__);
1215                 return;
1216         }
1217         fw_xfer_unload(xfer);
1218         if(xfer->send.payload != NULL){
1219                 free(xfer->send.payload, xfer->malloc);
1220         }
1221         if(xfer->recv.payload != NULL){
1222                 free(xfer->recv.payload, xfer->malloc);
1223         }
1224         free(xfer, xfer->malloc);
1225 }
1226
1227 void
1228 fw_xfer_free( struct fw_xfer* xfer)
1229 {
1230         if (xfer == NULL) {
1231                 printf("%s: xfer == NULL\n", __func__);
1232                 return;
1233         }
1234         fw_xfer_unload(xfer);
1235         free(xfer, xfer->malloc);
1236 }
1237
1238 void
1239 fw_asy_callback_free(struct fw_xfer *xfer)
1240 {
1241 #if 0
1242         printf("asyreq done flag=0x%02x resp=%d\n",
1243                                 xfer->flag, xfer->resp);
1244 #endif
1245         fw_xfer_free(xfer);
1246 }
1247
1248 /*
1249  * To configure PHY.
1250  */
1251 static void
1252 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1253 {
1254         struct fw_xfer *xfer;
1255         struct fw_pkt *fp;
1256
1257         fc->status = FWBUSPHYCONF;
1258
1259         xfer = fw_xfer_alloc(M_FWXFER);
1260         if (xfer == NULL)
1261                 return;
1262         xfer->fc = fc;
1263         xfer->hand = fw_asy_callback_free;
1264
1265         fp = &xfer->send.hdr;
1266         fp->mode.ld[1] = 0;
1267         if (root_node >= 0)
1268                 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1269         if (gap_count >= 0)
1270                 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1271         fp->mode.ld[2] = ~fp->mode.ld[1];
1272 /* XXX Dangerous, how to pass PHY packet to device driver */
1273         fp->mode.common.tcode |= FWTCODE_PHY;
1274
1275         if (firewire_debug)
1276                 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n",
1277                                         __func__, root_node, gap_count);
1278         fw_asyreq(fc, -1, xfer);
1279 }
1280
1281 /*
1282  * Dump self ID.
1283  */
1284 static void
1285 fw_print_sid(uint32_t sid)
1286 {
1287         union fw_self_id *s;
1288         s = (union fw_self_id *) &sid;
1289         if ( s->p0.sequel ) {
1290                 if ( s->p1.sequence_num == FW_SELF_ID_PAGE0 ) {
1291                         printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d"
1292                                 "p8:%d p9:%d p10:%d\n",
1293                                 s->p1.phy_id, s->p1.port3, s->p1.port4,
1294                                 s->p1.port5, s->p1.port6, s->p1.port7,
1295                                 s->p1.port8, s->p1.port9, s->p1.port10);
1296                 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1 ){
1297                         printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n",
1298                                 s->p2.phy_id, s->p2.port11, s->p2.port12,
1299                                 s->p2.port13, s->p2.port14, s->p2.port15);
1300                 } else {
1301                         printf("node:%d Unknown Self ID Page number %d\n",
1302                                 s->p1.phy_id, s->p1.sequence_num);
1303                 }
1304         } else {
1305                 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d"
1306                         " p0:%d p1:%d p2:%d i:%d m:%d\n",
1307                         s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1308                         s->p0.phy_speed, s->p0.contender,
1309                         s->p0.power_class, s->p0.port0, s->p0.port1,
1310                         s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1311         }
1312 }
1313
1314 /*
1315  * To receive self ID.
1316  */
1317 void fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len)
1318 {
1319         uint32_t *p;
1320         union fw_self_id *self_id;
1321         u_int i, j, node, c_port = 0, i_branch = 0;
1322
1323         fc->sid_cnt = len /(sizeof(uint32_t) * 2);
1324         fc->max_node = fc->nodeid & 0x3f;
1325         CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
1326         fc->status = FWBUSCYMELECT;
1327         fc->topology_map->crc_len = 2;
1328         fc->topology_map->generation ++;
1329         fc->topology_map->self_id_count = 0;
1330         fc->topology_map->node_count = 0;
1331         fc->speed_map->generation ++;
1332         fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1333         self_id = &fc->topology_map->self_id[0];
1334         for(i = 0; i < fc->sid_cnt; i ++){
1335                 if (sid[1] != ~sid[0]) {
1336                         device_printf(fc->bdev, "%s: ERROR invalid self-id packet\n",
1337                                                 __func__);
1338                         sid += 2;
1339                         continue;
1340                 }
1341                 *self_id = *((union fw_self_id *)sid);
1342                 fc->topology_map->crc_len++;
1343                 if(self_id->p0.sequel == 0){
1344                         fc->topology_map->node_count ++;
1345                         c_port = 0;
1346                         if (firewire_debug)
1347                                 fw_print_sid(sid[0]);
1348                         node = self_id->p0.phy_id;
1349                         if(fc->max_node < node){
1350                                 fc->max_node = self_id->p0.phy_id;
1351                         }
1352                         /* XXX I'm not sure this is the right speed_map */
1353                         fc->speed_map->speed[node][node]
1354                                         = self_id->p0.phy_speed;
1355                         for (j = 0; j < node; j ++) {
1356                                 fc->speed_map->speed[j][node]
1357                                         = fc->speed_map->speed[node][j]
1358                                         = min(fc->speed_map->speed[j][j],
1359                                                         self_id->p0.phy_speed);
1360                         }
1361                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1362                           (self_id->p0.link_active && self_id->p0.contender)) {
1363                                 fc->irm = self_id->p0.phy_id;
1364                         }
1365                         if(self_id->p0.port0 >= 0x2){
1366                                 c_port++;
1367                         }
1368                         if(self_id->p0.port1 >= 0x2){
1369                                 c_port++;
1370                         }
1371                         if(self_id->p0.port2 >= 0x2){
1372                                 c_port++;
1373                         }
1374                 }
1375                 if(c_port > 2){
1376                         i_branch += (c_port - 2);
1377                 }
1378                 sid += 2;
1379                 self_id++;
1380                 fc->topology_map->self_id_count ++;
1381         }
1382         /* CRC */
1383         fc->topology_map->crc = fw_crc16(
1384                         (uint32_t *)&fc->topology_map->generation,
1385                         fc->topology_map->crc_len * 4);
1386         fc->speed_map->crc = fw_crc16(
1387                         (uint32_t *)&fc->speed_map->generation,
1388                         fc->speed_map->crc_len * 4);
1389         /* byteswap and copy to CSR */
1390         p = (uint32_t *)fc->topology_map;
1391         for (i = 0; i <= fc->topology_map->crc_len; i++)
1392                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1393         p = (uint32_t *)fc->speed_map;
1394         CSRARC(fc, SPED_MAP) = htonl(*p++);
1395         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1396         /* don't byte-swap uint8_t array */
1397         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1398
1399         fc->max_hop = fc->max_node - i_branch;
1400         device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n",
1401                         fc->max_node + 1, fc->max_hop,
1402                         (fc->irm == -1) ? "Not IRM capable" : "cable IRM",
1403                         fc->irm,
1404                         (fc->irm == fc->nodeid) ? " (me) " : "");
1405
1406         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1407                 if (fc->irm == fc->nodeid) {
1408                         fc->status = FWBUSMGRDONE;
1409                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1410                         fw_bmr(fc);
1411                 } else {
1412                         fc->status = FWBUSMGRELECT;
1413                         callout_reset(&fc->bmr_callout, hz/8,
1414                                 (void *)fw_try_bmr, (void *)fc);
1415                 }
1416         } else
1417                 fc->status = FWBUSMGRDONE;
1418
1419         callout_reset(&fc->busprobe_callout, hz/4,
1420                         (void *)fw_bus_probe, (void *)fc);
1421 }
1422
1423 /*
1424  * To probe devices on the IEEE1394 bus.
1425  */
1426 static void
1427 fw_bus_probe(struct firewire_comm *fc)
1428 {
1429         int s;
1430         struct fw_device *fwdev;
1431
1432         s = splfw();
1433         fc->status = FWBUSEXPLORE;
1434
1435         /* Invalidate all devices, just after bus reset. */
1436         if (firewire_debug)
1437                 device_printf(fc->bdev, "%s:"
1438                         "iterate and invalidate all nodes\n",
1439                         __func__);
1440         STAILQ_FOREACH(fwdev, &fc->devices, link)
1441                 if (fwdev->status != FWDEVINVAL) {
1442                         fwdev->status = FWDEVINVAL;
1443                         fwdev->rcnt = 0;
1444                         if (firewire_debug)
1445                                 device_printf(fc->bdev, "%s:"
1446                                         "Invalidate Dev ID: %08x%08x\n",
1447                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1448                 } else {
1449                         if (firewire_debug)
1450                                 device_printf(fc->bdev, "%s:"
1451                                         "Dev ID: %08x%08x already invalid\n",
1452                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1453                 }
1454         splx(s);
1455
1456         wakeup((void *)fc);
1457 }
1458
1459 static int
1460 fw_explore_read_quads(struct fw_device *fwdev, int offset,
1461     uint32_t *quad, int length)
1462 {
1463         struct fw_xfer *xfer;
1464         uint32_t tmp;
1465         int i, error;
1466
1467         for (i = 0; i < length; i ++, offset += sizeof(uint32_t)) {
1468                 xfer = fwmem_read_quad(fwdev, NULL, -1,
1469                     0xffff, 0xf0000000 | offset, (void *)&tmp,
1470                     fw_xferwake);
1471                 if (xfer == NULL)
1472                         return (-1);
1473                 fw_xferwait(xfer);
1474
1475                 if (xfer->resp == 0)
1476                         quad[i] = ntohl(tmp);
1477
1478                 error = xfer->resp;
1479                 fw_xfer_free(xfer);
1480                 if (error)
1481                         return (error);
1482         }
1483         return (0);
1484 }
1485
1486
1487 static int
1488 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1489 {
1490         int err, i, off;
1491         struct csrdirectory *dir;
1492         struct csrreg *reg;
1493
1494         dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1495         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1496             (uint32_t *)dir, 1);
1497         if (err)
1498                 return (-1);
1499
1500         offset += sizeof(uint32_t);
1501         reg = (struct csrreg *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1502         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1503             (uint32_t *)reg, dir->crc_len);
1504         if (err)
1505                 return (-1);
1506
1507         /* XXX check CRC */
1508
1509         off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1510         if (fwdev->rommax < off)
1511                 fwdev->rommax = off;
1512
1513         if (recur == 0)
1514                 return (0);
1515
1516         for (i = 0; i < dir->crc_len; i ++, offset += sizeof(uint32_t)) {
1517                 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
1518                         recur = 1;
1519                 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
1520                         recur = 0;
1521                 else
1522                         continue;
1523
1524                 off = offset + reg[i].val * sizeof(uint32_t);
1525                 if (off > CROMSIZE) {
1526                         printf("%s: invalid offset %d\n", __FUNCTION__, off);
1527                         return(-1);
1528                 }
1529                 err = fw_explore_csrblock(fwdev, off, recur);
1530                 if (err)
1531                         return (-1);
1532         }
1533         return (0);
1534 }
1535
1536 static int
1537 fw_explore_node(struct fw_device *dfwdev)
1538 {
1539         struct firewire_comm *fc;
1540         struct fw_device *fwdev, *pfwdev, *tfwdev;
1541         uint32_t *csr;
1542         struct csrhdr *hdr;
1543         struct bus_info *binfo;
1544         int err, node;
1545         uint32_t speed_test = 0;
1546
1547         fc = dfwdev->fc;
1548         csr = dfwdev->csrrom;
1549         node = dfwdev->dst;
1550
1551         /* First quad */
1552         err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
1553         if (err) {
1554                 device_printf(fc->bdev, "%s: node%d: explore_read_quads failure\n",
1555                     __func__, node);
1556                 dfwdev->status = FWDEVINVAL;
1557                 return (-1);
1558         }
1559         hdr = (struct csrhdr *)&csr[0];
1560         if (hdr->info_len != 4) {
1561                 if (firewire_debug)
1562                         device_printf(fc->bdev, "%s: node%d: wrong bus info len(%d)\n",
1563                             __func__, node, hdr->info_len);
1564                 dfwdev->status = FWDEVINVAL;
1565                 return (-1);
1566         }
1567
1568         /* bus info */
1569         err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1570         if (err) {
1571                 device_printf(fc->bdev, "%s: node%d: error reading 0x04\n",
1572                     __func__, node);
1573                 dfwdev->status = FWDEVINVAL;
1574                 return (-1);
1575         }
1576         binfo = (struct bus_info *)&csr[1];
1577         if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1578                 device_printf(fc->bdev, "%s: node%d: invalid bus name 0x%08x\n",
1579                     __func__, node, binfo->bus_name);
1580                 dfwdev->status = FWDEVINVAL;
1581                 return (-1);
1582         }
1583
1584         if (firewire_debug)
1585                 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n"
1586                                         "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) "
1587                                         "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) "
1588                                         "generation(%d) link_spd(%d)\n",
1589                                         __func__, node,
1590                                         binfo->irmc, binfo->cmc, binfo->isc,
1591                                         binfo->bmc, binfo->pmc, binfo->cyc_clk_acc,
1592                                         binfo->max_rec, binfo->max_rom,
1593                                         binfo->generation, binfo->link_spd);
1594
1595         STAILQ_FOREACH(fwdev, &fc->devices, link)
1596                 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1597                         break;
1598         if (fwdev == NULL) {
1599                 /* new device */
1600                 fwdev = malloc(sizeof(struct fw_device), M_FW,
1601                                                 M_NOWAIT | M_ZERO);
1602                 if (fwdev == NULL) {
1603                         device_printf(fc->bdev, "%s: node%d: no memory\n",
1604                                         __func__, node);
1605                         return (-1);
1606                 }
1607                 fwdev->fc = fc;
1608                 fwdev->eui = binfo->eui64;
1609                 fwdev->dst = dfwdev->dst;
1610                 fwdev->maxrec = dfwdev->maxrec;
1611                 fwdev->status = dfwdev->status;
1612
1613                 /*
1614                  * Pre-1394a-2000 didn't have link_spd in
1615                  * the Bus Info block, so try and use the
1616                  * speed map value.
1617                  * 1394a-2000 compliant devices only use
1618                  * the Bus Info Block link spd value, so
1619                  * ignore the speed map alltogether. SWB
1620                  */
1621                 if ( binfo->link_spd == FWSPD_S100 /* 0 */) {
1622                         device_printf(fc->bdev, "%s: "
1623                                 "Pre 1394a-2000 detected\n",
1624                                 __func__);
1625                         fwdev->speed = fc->speed_map->speed[fc->nodeid][node];
1626                 } else
1627                         fwdev->speed = binfo->link_spd;
1628                 /*
1629                  * Test this speed with a read to the CSRROM.
1630                  * If it fails, slow down the speed and retry.
1631                  */
1632                 while (fwdev->speed > FWSPD_S100 /* 0 */) {
1633                         err = fw_explore_read_quads(fwdev, CSRROMOFF,
1634                                         &speed_test, 1);
1635                         if (err) {
1636                                 device_printf(fc->bdev, "%s: fwdev->speed(%s)"
1637                                                 " decremented due to negotiation\n",
1638                                                 __func__,
1639                                                 linkspeed[fwdev->speed]);
1640                                 fwdev->speed--;
1641                         } else
1642                                 break;
1643
1644                 }
1645
1646                 /*
1647                  * If the fwdev is not found in the
1648                  * fc->devices TAILQ, then we will add it.
1649                  */
1650                 pfwdev = NULL;
1651                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1652                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1653                                 (tfwdev->eui.hi == fwdev->eui.hi &&
1654                                 tfwdev->eui.lo > fwdev->eui.lo))
1655                                 break;
1656                         pfwdev = tfwdev;
1657                 }
1658                 if (pfwdev == NULL)
1659                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1660                 else
1661                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1662
1663                 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1664                     linkspeed[fwdev->speed],
1665                     fwdev->eui.hi, fwdev->eui.lo);
1666         } else {
1667                 fwdev->dst = node;
1668                 fwdev->status = FWDEVINIT;
1669                 /* unchanged ? */
1670                 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) {
1671                         if (firewire_debug)
1672                                 device_printf(fc->dev, "node%d: crom unchanged\n", node);
1673                         return (0);
1674                 }
1675         }
1676
1677         bzero(&fwdev->csrrom[0], CROMSIZE);
1678
1679         /* copy first quad and bus info block */
1680         bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5);
1681         fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1682
1683         err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1684
1685         if (err) {
1686                 if (firewire_debug)
1687                         device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n",
1688                                         __func__, err);
1689                 fwdev->status = FWDEVINVAL;
1690                 fwdev->csrrom[0] = 0;
1691         }
1692         return (err);
1693
1694 }
1695
1696 /*
1697  * Find the self_id packet for a node, ignoring sequels.
1698  */
1699 static union fw_self_id *
1700 fw_find_self_id(struct firewire_comm *fc, int node)
1701 {
1702         uint32_t i;
1703         union fw_self_id *s;
1704
1705         for (i = 0; i < fc->topology_map->self_id_count; i++) {
1706                 s = &fc->topology_map->self_id[i];
1707                 if (s->p0.sequel)
1708                         continue;
1709                 if (s->p0.phy_id == node)
1710                         return s;
1711         }
1712         return 0;
1713 }
1714
1715 static void
1716 fw_explore(struct firewire_comm *fc)
1717 {
1718         int node, err, s, i, todo, todo2, trys;
1719         char nodes[63];
1720         struct fw_device dfwdev;
1721         union fw_self_id *fwsid;
1722
1723         todo = 0;
1724         /* setup dummy fwdev */
1725         dfwdev.fc = fc;
1726         dfwdev.speed = 0;
1727         dfwdev.maxrec = 8; /* 512 */
1728         dfwdev.status = FWDEVINIT;
1729
1730         for (node = 0; node <= fc->max_node; node ++) {
1731                 /* We don't probe myself and linkdown nodes */
1732                 if (node == fc->nodeid) {
1733                         if (firewire_debug)
1734                                 device_printf(fc->bdev, "%s:"
1735                                         "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n",
1736                                         __func__, node, fc->nodeid, fc->max_node);
1737                         continue;
1738                 } else if (firewire_debug) {
1739                         device_printf(fc->bdev, "%s:"
1740                                 "node(%d) fc->max_node(%d) found\n",
1741                                 __func__, node, fc->max_node);
1742                 }
1743                 fwsid = fw_find_self_id(fc, node);
1744                 if (!fwsid || !fwsid->p0.link_active) {
1745                         if (firewire_debug)
1746                                 device_printf(fc->bdev, "%s: node%d: link down\n",
1747                                                         __func__, node);
1748                         continue;
1749                 }
1750                 nodes[todo++] = node;
1751         }
1752
1753         s = splfw();
1754         for (trys = 0; todo > 0 && trys < 3; trys ++) {
1755                 todo2 = 0;
1756                 for (i = 0; i < todo; i ++) {
1757                         dfwdev.dst = nodes[i];
1758                         err = fw_explore_node(&dfwdev);
1759                         if (err)
1760                                 nodes[todo2++] = nodes[i];
1761                         if (firewire_debug)
1762                                 device_printf(fc->bdev, "%s: node %d, err = %d\n",
1763                                         __func__, node, err);
1764                 }
1765                 todo = todo2;
1766         }
1767         splx(s);
1768 }
1769
1770
1771 static void
1772 fw_bus_probe_thread(void *arg)
1773 {
1774         struct firewire_comm *fc;
1775
1776         fc = (struct firewire_comm *)arg;
1777
1778         mtx_lock(&fc->wait_lock);
1779         while (fc->status != FWBUSDETACH) {
1780                 if (fc->status == FWBUSEXPLORE) {
1781                         mtx_unlock(&fc->wait_lock);
1782                         fw_explore(fc);
1783                         fc->status = FWBUSEXPDONE;
1784                         if (firewire_debug)
1785                                 printf("bus_explore done\n");
1786                         fw_attach_dev(fc);
1787                         mtx_lock(&fc->wait_lock);
1788                 }
1789                 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0);
1790         }
1791         mtx_unlock(&fc->wait_lock);
1792         kproc_exit(0);
1793 }
1794
1795 /*
1796  * To attach sub-devices layer onto IEEE1394 bus.
1797  */
1798 static void
1799 fw_attach_dev(struct firewire_comm *fc)
1800 {
1801         struct fw_device *fwdev, *next;
1802         int i, err;
1803         device_t *devlistp;
1804         int devcnt;
1805         struct firewire_dev_comm *fdc;
1806
1807         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1808                 next = STAILQ_NEXT(fwdev, link);
1809                 if (fwdev->status == FWDEVINIT) {
1810                         fwdev->status = FWDEVATTACHED;
1811                 } else if (fwdev->status == FWDEVINVAL) {
1812                         fwdev->rcnt ++;
1813                         if (firewire_debug)
1814                                 device_printf(fc->bdev, "%s:"
1815                                         "fwdev->rcnt(%d), hold_count(%d)\n",
1816                                         __func__, fwdev->rcnt, hold_count);
1817                         if (fwdev->rcnt > hold_count) {
1818                                 /*
1819                                  * Remove devices which have not been seen
1820                                  * for a while.
1821                                  */
1822                                 device_printf(fc->bdev, "%s:"
1823                                         "Removing missing device ID:%08x%08x\n",
1824                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1825                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1826                                     link);
1827                                 free(fwdev, M_FW);
1828                         }
1829                 }
1830         }
1831
1832         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1833         if( err == 0 ) {
1834                 for( i = 0 ; i < devcnt ; i++){
1835                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
1836                                 fdc = device_get_softc(devlistp[i]);
1837                                 if (fdc->post_explore != NULL)
1838                                         fdc->post_explore(fdc);
1839                         }
1840                 }
1841                 free(devlistp, M_TEMP);
1842         }
1843
1844         return;
1845 }
1846
1847 /*
1848  * To allocate unique transaction label.
1849  */
1850 static int
1851 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1852 {
1853         u_int dst, new_tlabel;
1854         struct fw_xfer *txfer;
1855         int s;
1856
1857         dst = xfer->send.hdr.mode.hdr.dst & 0x3f;
1858         s = splfw();
1859         mtx_lock(&fc->tlabel_lock);
1860         new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f;
1861         STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
1862                 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst)
1863                                 break;
1864         if(txfer == NULL) {
1865                 fc->last_tlabel[dst] = new_tlabel;
1866                 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
1867                 mtx_unlock(&fc->tlabel_lock);
1868                 splx(s);
1869                 xfer->tl = new_tlabel;
1870                 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
1871                 if (firewire_debug > 1)
1872                         printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel);
1873                 return (new_tlabel);
1874         }
1875         mtx_unlock(&fc->tlabel_lock);
1876         splx(s);
1877
1878         if (firewire_debug > 1)
1879                 printf("fw_get_tlabel: no free tlabel\n");
1880         return (-1);
1881 }
1882
1883 static void
1884 fw_rcv_copy(struct fw_rcv_buf *rb)
1885 {
1886         struct fw_pkt *pkt;
1887         u_char *p;
1888         struct tcode_info *tinfo;
1889         u_int res, i, len, plen;
1890
1891         rb->xfer->recv.spd = rb->spd;
1892
1893         pkt = (struct fw_pkt *)rb->vec->iov_base;
1894         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1895
1896         /* Copy header */
1897         p = (u_char *)&rb->xfer->recv.hdr;
1898         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1899         rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
1900         rb->vec->iov_len -= tinfo->hdr_len;
1901
1902         /* Copy payload */
1903         p = (u_char *)rb->xfer->recv.payload;
1904         res = rb->xfer->recv.pay_len;
1905
1906         /* special handling for RRESQ */
1907         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1908             p != NULL && res >= sizeof(uint32_t)) {
1909                 *(uint32_t *)p = pkt->mode.rresq.data;
1910                 rb->xfer->recv.pay_len = sizeof(uint32_t);
1911                 return;
1912         }
1913
1914         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1915                 return;
1916
1917         plen = pkt->mode.rresb.len;
1918
1919         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1920                 len = MIN(rb->vec->iov_len, plen);
1921                 if (res < len) {
1922                         device_printf(rb->fc->bdev, "%s:"
1923                                 " rcv buffer(%d) is %d bytes short.\n",
1924                                 __func__, rb->xfer->recv.pay_len, len - res);
1925                         len = res;
1926                 }
1927                 bcopy(rb->vec->iov_base, p, len);
1928                 p += len;
1929                 res -= len;
1930                 plen -= len;
1931                 if (res == 0 || plen == 0)
1932                         break;
1933         }
1934         rb->xfer->recv.pay_len -= res;
1935
1936 }
1937
1938 /*
1939  * Generic packet receiving process.
1940  */
1941 void
1942 fw_rcv(struct fw_rcv_buf *rb)
1943 {
1944         struct fw_pkt *fp, *resfp;
1945         struct fw_bind *bind;
1946         int tcode;
1947         int i, len, oldstate;
1948 #if 0
1949         {
1950                 uint32_t *qld;
1951                 int i;
1952                 qld = (uint32_t *)buf;
1953                 printf("spd %d len:%d\n", spd, len);
1954                 for( i = 0 ; i <= len && i < 32; i+= 4){
1955                         printf("0x%08x ", ntohl(qld[i/4]));
1956                         if((i % 16) == 15) printf("\n");
1957                 }
1958                 if((i % 16) != 15) printf("\n");
1959         }
1960 #endif
1961         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1962         tcode = fp->mode.common.tcode;
1963         switch (tcode) {
1964         case FWTCODE_WRES:
1965         case FWTCODE_RRESQ:
1966         case FWTCODE_RRESB:
1967         case FWTCODE_LRES:
1968                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1969                                 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode);
1970                 if(rb->xfer == NULL) {
1971                         device_printf(rb->fc->bdev, "%s: "
1972                                 "unknown response "
1973                                 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1974                                 __func__,
1975                                 tcode_str[tcode], tcode,
1976                                 fp->mode.hdr.src,
1977                                 fp->mode.hdr.tlrt >> 2,
1978                                 fp->mode.hdr.tlrt & 3,
1979                                 fp->mode.rresq.data);
1980 #if 0
1981                         printf("try ad-hoc work around!!\n");
1982                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1983                                         (fp->mode.hdr.tlrt >> 2)^3);
1984                         if (rb->xfer == NULL) {
1985                                 printf("no use...\n");
1986                                 return;
1987                         }
1988 #else
1989                         return;
1990 #endif
1991                 }
1992                 fw_rcv_copy(rb);
1993                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1994                         rb->xfer->resp = EIO;
1995                 else
1996                         rb->xfer->resp = 0;
1997                 /* make sure the packet is drained in AT queue */
1998                 oldstate = rb->xfer->flag;
1999                 rb->xfer->flag = FWXF_RCVD;
2000                 switch (oldstate) {
2001                 case FWXF_SENT:
2002                         fw_xfer_done(rb->xfer);
2003                         break;
2004                 case FWXF_START:
2005 #if 0
2006                         if (firewire_debug)
2007                                 printf("not sent yet tl=%x\n", rb->xfer->tl);
2008 #endif
2009                         break;
2010                 default:
2011                         device_printf(rb->fc->bdev, "%s: "
2012                                 "unexpected flag 0x%02x\n", __func__, rb->xfer->flag);
2013                 }
2014                 return;
2015         case FWTCODE_WREQQ:
2016         case FWTCODE_WREQB:
2017         case FWTCODE_RREQQ:
2018         case FWTCODE_RREQB:
2019         case FWTCODE_LREQ:
2020                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
2021                         fp->mode.rreqq.dest_lo);
2022                 if(bind == NULL){
2023                         device_printf(rb->fc->bdev, "%s: "
2024                                 "Unknown service addr 0x%04x:0x%08x %s(%x)"
2025 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2026                                 " src=0x%x data=%lx\n",
2027 #else
2028                                 " src=0x%x data=%x\n",
2029 #endif
2030                                 __func__,
2031                                 fp->mode.wreqq.dest_hi,
2032                                 fp->mode.wreqq.dest_lo,
2033                                 tcode_str[tcode], tcode,
2034                                 fp->mode.hdr.src,
2035                                 ntohl(fp->mode.wreqq.data));
2036
2037                         if (rb->fc->status == FWBUSINIT) {
2038                                 device_printf(rb->fc->bdev, "%s: cannot respond(bus reset)!\n",
2039                                                 __func__);
2040                                 return;
2041                         }
2042                         rb->xfer = fw_xfer_alloc(M_FWXFER);
2043                         if(rb->xfer == NULL){
2044                                 return;
2045                         }
2046                         rb->xfer->send.spd = rb->spd;
2047                         rb->xfer->send.pay_len = 0;
2048                         resfp = &rb->xfer->send.hdr;
2049                         switch (tcode) {
2050                         case FWTCODE_WREQQ:
2051                         case FWTCODE_WREQB:
2052                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
2053                                 break;
2054                         case FWTCODE_RREQQ:
2055                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
2056                                 break;
2057                         case FWTCODE_RREQB:
2058                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
2059                                 break;
2060                         case FWTCODE_LREQ:
2061                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
2062                                 break;
2063                         }
2064                         resfp->mode.hdr.dst = fp->mode.hdr.src;
2065                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
2066                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
2067                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
2068                         resfp->mode.rresb.extcode = 0;
2069                         resfp->mode.rresb.len = 0;
2070 /*
2071                         rb->xfer->hand = fw_xferwake;
2072 */
2073                         rb->xfer->hand = fw_xfer_free;
2074                         if(fw_asyreq(rb->fc, -1, rb->xfer)){
2075                                 fw_xfer_free(rb->xfer);
2076                                 return;
2077                         }
2078                         return;
2079                 }
2080                 len = 0;
2081                 for (i = 0; i < rb->nvec; i ++)
2082                         len += rb->vec[i].iov_len;
2083                 rb->xfer = STAILQ_FIRST(&bind->xferlist);
2084                 if (rb->xfer == NULL) {
2085                         device_printf(rb->fc->bdev, "%s: "
2086                                 "Discard a packet for this bind.\n",
2087                                 __func__);
2088                         return;
2089                 }
2090                 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
2091                 fw_rcv_copy(rb);
2092                 rb->xfer->hand(rb->xfer);
2093                 return;
2094 #if 0 /* shouldn't happen ?? or for GASP */
2095         case FWTCODE_STREAM:
2096         {
2097                 struct fw_xferq *xferq;
2098
2099                 xferq = rb->fc->ir[sub];
2100 #if 0
2101                 printf("stream rcv dma %d len %d off %d spd %d\n",
2102                         sub, len, off, spd);
2103 #endif
2104                 if(xferq->queued >= xferq->maxq) {
2105                         printf("receive queue is full\n");
2106                         return;
2107                 }
2108                 /* XXX get xfer from xfer queue, we don't need copy for
2109                         per packet mode */
2110                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
2111                                                 vec[0].iov_len);
2112                 if (rb->xfer == NULL)
2113                         return;
2114                 fw_rcv_copy(rb)
2115                 s = splfw();
2116                 xferq->queued++;
2117                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
2118                 splx(s);
2119                 sc = device_get_softc(rb->fc->bdev);
2120 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2121                 if (&xferq->rsel.si_pid != 0)
2122 #else
2123                 if (SEL_WAITING(&xferq->rsel))
2124 #endif
2125                         selwakeuppri(&xferq->rsel, FWPRI);
2126                 if (xferq->flag & FWXFERQ_WAKEUP) {
2127                         xferq->flag &= ~FWXFERQ_WAKEUP;
2128                         wakeup((caddr_t)xferq);
2129                 }
2130                 if (xferq->flag & FWXFERQ_HANDLER) {
2131                         xferq->hand(xferq);
2132                 }
2133                 return;
2134                 break;
2135         }
2136 #endif
2137         default:
2138                 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n",
2139                                 __func__, tcode);
2140                 break;
2141         }
2142 }
2143
2144 /*
2145  * Post process for Bus Manager election process.
2146  */
2147 static void
2148 fw_try_bmr_callback(struct fw_xfer *xfer)
2149 {
2150         struct firewire_comm *fc;
2151         int bmr;
2152
2153         if (xfer == NULL)
2154                 return;
2155         fc = xfer->fc;
2156         if (xfer->resp != 0)
2157                 goto error;
2158         if (xfer->recv.payload == NULL)
2159                 goto error;
2160         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2161                 goto error;
2162
2163         bmr = ntohl(xfer->recv.payload[0]);
2164         if (bmr == 0x3f)
2165                 bmr = fc->nodeid;
2166
2167         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2168         fw_xfer_free_buf(xfer);
2169         fw_bmr(fc);
2170         return;
2171
2172 error:
2173         device_printf(fc->bdev, "bus manager election failed\n");
2174         fw_xfer_free_buf(xfer);
2175 }
2176
2177
2178 /*
2179  * To candidate Bus Manager election process.
2180  */
2181 static void
2182 fw_try_bmr(void *arg)
2183 {
2184         struct fw_xfer *xfer;
2185         struct firewire_comm *fc = (struct firewire_comm *)arg;
2186         struct fw_pkt *fp;
2187         int err = 0;
2188
2189         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2190         if(xfer == NULL){
2191                 return;
2192         }
2193         xfer->send.spd = 0;
2194         fc->status = FWBUSMGRELECT;
2195
2196         fp = &xfer->send.hdr;
2197         fp->mode.lreq.dest_hi = 0xffff;
2198         fp->mode.lreq.tlrt = 0;
2199         fp->mode.lreq.tcode = FWTCODE_LREQ;
2200         fp->mode.lreq.pri = 0;
2201         fp->mode.lreq.src = 0;
2202         fp->mode.lreq.len = 8;
2203         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2204         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2205         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2206         xfer->send.payload[0] = htonl(0x3f);
2207         xfer->send.payload[1] = htonl(fc->nodeid);
2208         xfer->hand = fw_try_bmr_callback;
2209
2210         err = fw_asyreq(fc, -1, xfer);
2211         if(err){
2212                 fw_xfer_free_buf(xfer);
2213                 return;
2214         }
2215         return;
2216 }
2217
2218 #ifdef FW_VMACCESS
2219 /*
2220  * Software implementation for physical memory block access.
2221  * XXX:Too slow, usef for debug purpose only.
2222  */
2223 static void
2224 fw_vmaccess(struct fw_xfer *xfer){
2225         struct fw_pkt *rfp, *sfp = NULL;
2226         uint32_t *ld = (uint32_t *)xfer->recv.buf;
2227
2228         printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2229                         xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
2230         printf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2231         if(xfer->resp != 0){
2232                 fw_xfer_free( xfer);
2233                 return;
2234         }
2235         if(xfer->recv.buf == NULL){
2236                 fw_xfer_free( xfer);
2237                 return;
2238         }
2239         rfp = (struct fw_pkt *)xfer->recv.buf;
2240         switch(rfp->mode.hdr.tcode){
2241                 /* XXX need fix for 64bit arch */
2242                 case FWTCODE_WREQB:
2243                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2244                         xfer->send.len = 12;
2245                         sfp = (struct fw_pkt *)xfer->send.buf;
2246                         bcopy(rfp->mode.wreqb.payload,
2247                                 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
2248                         sfp->mode.wres.tcode = FWTCODE_WRES;
2249                         sfp->mode.wres.rtcode = 0;
2250                         break;
2251                 case FWTCODE_WREQQ:
2252                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2253                         xfer->send.len = 12;
2254                         sfp->mode.wres.tcode = FWTCODE_WRES;
2255                         *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
2256                         sfp->mode.wres.rtcode = 0;
2257                         break;
2258                 case FWTCODE_RREQB:
2259                         xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT);
2260                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2261                         sfp = (struct fw_pkt *)xfer->send.buf;
2262                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2263                                 sfp->mode.rresb.payload, (uint16_t)ntohs(rfp->mode.rreqb.len));
2264                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2265                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2266                         sfp->mode.rresb.rtcode = 0;
2267                         sfp->mode.rresb.extcode = 0;
2268                         break;
2269                 case FWTCODE_RREQQ:
2270                         xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2271                         xfer->send.len = 16;
2272                         sfp = (struct fw_pkt *)xfer->send.buf;
2273                         sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2274                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2275                         sfp->mode.rresb.rtcode = 0;
2276                         break;
2277                 default:
2278                         fw_xfer_free( xfer);
2279                         return;
2280         }
2281         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2282         xfer->dst = ntohs(rfp->mode.hdr.src);
2283         xfer->hand = fw_xfer_free;
2284
2285         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2286         sfp->mode.hdr.pri = 0;
2287
2288         fw_asyreq(xfer->fc, -1, xfer);
2289 /**/
2290         return;
2291 }
2292 #endif
2293
2294 /*
2295  * CRC16 check-sum for IEEE1394 register blocks.
2296  */
2297 uint16_t
2298 fw_crc16(uint32_t *ptr, uint32_t len){
2299         uint32_t i, sum, crc = 0;
2300         int shift;
2301         len = (len + 3) & ~3;
2302         for(i = 0 ; i < len ; i+= 4){
2303                 for( shift = 28 ; shift >= 0 ; shift -= 4){
2304                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2305                         crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2306                 }
2307                 crc &= 0xffff;
2308         }
2309         return((uint16_t) crc);
2310 }
2311
2312 /*
2313  * Find the root node, if it is not
2314  * Cycle Master Capable, then we should
2315  * override this and become the Cycle
2316  * Master
2317  */
2318 static int
2319 fw_bmr(struct firewire_comm *fc)
2320 {
2321         struct fw_device fwdev;
2322         union fw_self_id *self_id;
2323         int cmstr;
2324         uint32_t quad;
2325
2326         /* Check to see if the current root node is cycle master capable */
2327         self_id = fw_find_self_id(fc, fc->max_node);
2328         if (fc->max_node > 0) {
2329                 /* XXX check cmc bit of businfo block rather than contender */
2330                 if (self_id->p0.link_active && self_id->p0.contender)
2331                         cmstr = fc->max_node;
2332                 else {
2333                         device_printf(fc->bdev,
2334                                 "root node is not cycle master capable\n");
2335                         /* XXX shall we be the cycle master? */
2336                         cmstr = fc->nodeid;
2337                         /* XXX need bus reset */
2338                 }
2339         } else
2340                 cmstr = -1;
2341
2342         device_printf(fc->bdev, "bus manager %d %s\n",
2343                 CSRARC(fc, BUS_MGR_ID),
2344                 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : "");
2345         if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2346                 /* We are not the bus manager */
2347                 return(0);
2348         }
2349
2350         /* Optimize gapcount */
2351         if(fc->max_hop <= MAX_GAPHOP )
2352                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2353         /* If we are the cycle master, nothing to do */
2354         if (cmstr == fc->nodeid || cmstr == -1)
2355                 return 0;
2356         /* Bus probe has not finished, make dummy fwdev for cmstr */
2357         bzero(&fwdev, sizeof(fwdev));
2358         fwdev.fc = fc;
2359         fwdev.dst = cmstr;
2360         fwdev.speed = 0;
2361         fwdev.maxrec = 8; /* 512 */
2362         fwdev.status = FWDEVINIT;
2363         /* Set cmstr bit on the cycle master */
2364         quad = htonl(1 << 8);
2365         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2366                 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2367
2368         return 0;
2369 }
2370
2371 int
2372 fw_open_isodma(struct firewire_comm *fc, int tx)
2373 {
2374         struct fw_xferq **xferqa;
2375         struct fw_xferq *xferq;
2376         int i;
2377
2378         if (tx)
2379                 xferqa = &fc->it[0];
2380         else
2381                 xferqa = &fc->ir[0];
2382
2383         FW_GLOCK(fc);
2384         for (i = 0; i < fc->nisodma; i ++) {
2385                 xferq = xferqa[i];
2386                 if ((xferq->flag & FWXFERQ_OPEN) == 0) {
2387                         xferq->flag |= FWXFERQ_OPEN;
2388                         break;
2389                 }
2390         }
2391         if (i == fc->nisodma) {
2392                 printf("no free dma channel (tx=%d)\n", tx);
2393                 i = -1;
2394         }
2395         FW_GUNLOCK(fc);
2396         return (i);
2397 }
2398
2399 static int
2400 fw_modevent(module_t mode, int type, void *data)
2401 {
2402         int err = 0;
2403 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2404         static eventhandler_tag fwdev_ehtag = NULL;
2405 #endif
2406
2407         switch (type) {
2408         case MOD_LOAD:
2409 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2410                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2411                                                 fwdev_clone, 0, 1000);
2412 #endif
2413                 break;
2414         case MOD_UNLOAD:
2415 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2416                 if (fwdev_ehtag != NULL)
2417                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2418 #endif
2419                 break;
2420         case MOD_SHUTDOWN:
2421                 break;
2422         default:
2423                 return (EOPNOTSUPP);
2424         }
2425         return (err);
2426 }
2427
2428
2429 #ifdef __DragonFly__
2430 DECLARE_DUMMY_MODULE(firewire);
2431 #endif
2432 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0);
2433 MODULE_VERSION(firewire, 1);