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  * $FreeBSD$
  35  *
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/types.h>
  41
  42 #include <sys/kernel.h>
  43 #include <sys/module.h>
  44 #include <sys/malloc.h>
  45 #include <sys/conf.h>
  46 #include <sys/sysctl.h>
  47 #include <sys/kthread.h>
  48
  49 #if defined(__DragonFly__) || __FreeBSD_version < 500000
  50 #include <machine/clock.h>      /* for DELAY() */
  51 #endif
  52
  53 #include <sys/bus.h>            /* used by smbus and newbus */
  54 #include <machine/bus.h>
  55
  56 #ifdef __DragonFly__
  57 #include "firewire.h"
  58 #include "firewirereg.h"
  59 #include "fwmem.h"
  60 #include "iec13213.h"
  61 #include "iec68113.h"
  62 #else
  63 #include <dev/firewire/firewire.h>
  64 #include <dev/firewire/firewirereg.h>
  65 #include <dev/firewire/fwmem.h>
  66 #include <dev/firewire/iec13213.h>
  67 #include <dev/firewire/iec68113.h>
  68 #endif
  69
  70 struct crom_src_buf {
  71         struct crom_src src;
  72         struct crom_chunk root;
  73         struct crom_chunk vendor;
  74         struct crom_chunk hw;
  75 };
  76
  77 int firewire_debug=0, try_bmr=1, hold_count=3;
  78 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  79         "FireWire driver debug flag");
  80 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
  81 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  82         "Try to be a bus manager");
  83 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  84         "Number of count of bus resets for removing lost device information");
  85
  86 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  87 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  88
  89 #define FW_MAXASYRTY 4
  90
  91 devclass_t firewire_devclass;
  92
  93 static void firewire_identify   (driver_t *, device_t);
  94 static int firewire_probe       (device_t);
  95 static int firewire_attach      (device_t);
  96 static int firewire_detach      (device_t);
  97 static int firewire_resume      (device_t);
  98 #if 0
  99 static int firewire_shutdown    (device_t);
 100 #endif
 101 static device_t firewire_add_child   (device_t, int, const char *, int);
 102 static void fw_try_bmr (void *);
 103 static void fw_try_bmr_callback (struct fw_xfer *);
 104 static void fw_asystart (struct fw_xfer *);
 105 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
 106 static void fw_bus_probe (struct firewire_comm *);
 107 static void fw_attach_dev (struct firewire_comm *);
 108 static void fw_bus_probe_thread(void *);
 109 #ifdef FW_VMACCESS
 110 static void fw_vmaccess (struct fw_xfer *);
 111 #endif
 112 static int fw_bmr (struct firewire_comm *);
 113
 114 static device_method_t firewire_methods[] = {
 115         /* Device interface */
 116         DEVMETHOD(device_identify,      firewire_identify),
 117         DEVMETHOD(device_probe,         firewire_probe),
 118         DEVMETHOD(device_attach,        firewire_attach),
 119         DEVMETHOD(device_detach,        firewire_detach),
 120         DEVMETHOD(device_suspend,       bus_generic_suspend),
 121         DEVMETHOD(device_resume,        firewire_resume),
 122         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 123
 124         /* Bus interface */
 125         DEVMETHOD(bus_add_child,        firewire_add_child),
 126         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 127
 128         { 0, 0 }
 129 };
 130 char *linkspeed[] = {
 131         "S100", "S200", "S400", "S800",
 132         "S1600", "S3200", "undef", "undef"
 133 };
 134
 135 static char *tcode_str[] = {
 136         "WREQQ", "WREQB", "WRES",   "undef",
 137         "RREQQ", "RREQB", "RRESQ",  "RRESB",
 138         "CYCS",  "LREQ",  "STREAM", "LRES",
 139         "undef", "undef", "PHY",    "undef"
 140 };
 141
 142 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
 143 #define MAX_GAPHOP 15
 144 u_int gap_cnt[] = { 5,  5,  7,  8, 10, 13, 16, 18,
 145                    21, 24, 26, 29, 32, 35, 37, 40};
 146
 147 static driver_t firewire_driver = {
 148         "firewire",
 149         firewire_methods,
 150         sizeof(struct firewire_softc),
 151 };
 152
 153 /*
 154  * Lookup fwdev by node id.
 155  */
 156 struct fw_device *
 157 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
 158 {
 159         struct fw_device *fwdev;
 160         int s;
 161
 162         s = splfw();
 163         STAILQ_FOREACH(fwdev, &fc->devices, link)
 164                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 165                         break;
 166         splx(s);
 167
 168         return fwdev;
 169 }
 170
 171 /*
 172  * Lookup fwdev by EUI64.
 173  */
 174 struct fw_device *
 175 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
 176 {
 177         struct fw_device *fwdev;
 178         int s;
 179
 180         s = splfw();
 181         STAILQ_FOREACH(fwdev, &fc->devices, link)
 182                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 183                         break;
 184         splx(s);
 185
 186         if(fwdev == NULL) return NULL;
 187         if(fwdev->status == FWDEVINVAL) return NULL;
 188         return fwdev;
 189 }
 190
 191 /*
 192  * Async. request procedure for userland application.
 193  */
 194 int
 195 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
 196 {
 197         int err = 0;
 198         struct fw_xferq *xferq;
 199         int tl = -1, len;
 200         struct fw_pkt *fp;
 201         int tcode;
 202         struct tcode_info *info;
 203
 204         if(xfer == NULL) return EINVAL;
 205         if(xfer->hand == NULL){
 206                 printf("hand == NULL\n");
 207                 return EINVAL;
 208         }
 209         fp = &xfer->send.hdr;
 210
 211         tcode = fp->mode.common.tcode & 0xf;
 212         info = &fc->tcode[tcode];
 213         if (info->flag == 0) {
 214                 printf("invalid tcode=%x\n", tcode);
 215                 return EINVAL;
 216         }
 217         if (info->flag & FWTI_REQ)
 218                 xferq = fc->atq;
 219         else
 220                 xferq = fc->ats;
 221         len = info->hdr_len;
 222         if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
 223                 printf("send.pay_len > maxrec\n");
 224                 return EINVAL;
 225         }
 226         if (info->flag & FWTI_BLOCK_STR)
 227                 len = fp->mode.stream.len;
 228         else if (info->flag & FWTI_BLOCK_ASY)
 229                 len = fp->mode.rresb.len;
 230         else
 231                 len = 0;
 232         if (len != xfer->send.pay_len){
 233                 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
 234                     len, xfer->send.pay_len, tcode_str[tcode], tcode);
 235                 return EINVAL;
 236         }
 237
 238         if(xferq->start == NULL){
 239                 printf("xferq->start == NULL\n");
 240                 return EINVAL;
 241         }
 242         if(!(xferq->queued < xferq->maxq)){
 243                 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
 244                         xferq->queued);
 245                 return EINVAL;
 246         }
 247
 248         if (info->flag & FWTI_TLABEL) {
 249                 if ((tl = fw_get_tlabel(fc, xfer)) == -1)
 250                         return EAGAIN;
 251                 fp->mode.hdr.tlrt = tl << 2;
 252         }
 253
 254         xfer->tl = tl;
 255         xfer->resp = 0;
 256         xfer->fc = fc;
 257         xfer->q = xferq;
 258
 259         fw_asystart(xfer);
 260         return err;
 261 }
 262 /*
 263  * Wakeup blocked process.
 264  */
 265 void
 266 fw_asy_callback(struct fw_xfer *xfer){
 267         wakeup(xfer);
 268         return;
 269 }
 270
 271 /*
 272  * Async. request with given xfer structure.
 273  */
 274 static void
 275 fw_asystart(struct fw_xfer *xfer)
 276 {
 277         struct firewire_comm *fc = xfer->fc;
 278         int s;
 279 #if 0 /* XXX allow bus explore packets only after bus rest */
 280         if (fc->status < FWBUSEXPLORE) {
 281                 xfer->resp = EAGAIN;
 282                 xfer->state = FWXF_BUSY;
 283                 if (xfer->hand != NULL)
 284                         xfer->hand(xfer);
 285                 return;
 286         }
 287 #endif
 288         microtime(&xfer->tv);
 289         s = splfw();
 290         xfer->state = FWXF_INQ;
 291         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 292         xfer->q->queued ++;
 293         splx(s);
 294         /* XXX just queue for mbuf */
 295         if (xfer->mbuf == NULL)
 296                 xfer->q->start(fc);
 297         return;
 298 }
 299
 300 static void
 301 firewire_identify(driver_t *driver, device_t parent)
 302 {
 303         BUS_ADD_CHILD(parent, 0, "firewire", -1);
 304 }
 305
 306 static int
 307 firewire_probe(device_t dev)
 308 {
 309         device_set_desc(dev, "IEEE1394(FireWire) bus");
 310         return (0);
 311 }
 312
 313 static void
 314 firewire_xfer_timeout(struct firewire_comm *fc)
 315 {
 316         struct fw_xfer *xfer;
 317         struct timeval tv;
 318         struct timeval split_timeout;
 319         int i, s;
 320
 321         split_timeout.tv_sec = 0;
 322         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 323
 324         microtime(&tv);
 325         timevalsub(&tv, &split_timeout);
 326
 327         s = splfw();
 328         for (i = 0; i < 0x40; i ++) {
 329                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 330                         if (timevalcmp(&xfer->tv, &tv, >))
 331                                 /* the rests are newer than this */
 332                                 break;
 333                         if (xfer->state == FWXF_START)
 334                                 /* not sent yet */
 335                                 break;
 336                         device_printf(fc->bdev,
 337                                 "split transaction timeout dst=0x%x tl=0x%x state=%d\n",
 338                                 xfer->send.hdr.mode.hdr.dst, i, xfer->state);
 339                         xfer->resp = ETIMEDOUT;
 340                         fw_xfer_done(xfer);
 341                 }
 342         }
 343         splx(s);
 344 }
 345
 346 #define WATCHDOC_HZ 10
 347 static void
 348 firewire_watchdog(void *arg)
 349 {
 350         struct firewire_comm *fc;
 351         static int watchdoc_clock = 0;
 352
 353         fc = (struct firewire_comm *)arg;
 354
 355         /*
 356          * At boot stage, the device interrupt is disabled and
 357          * We encounter a timeout easily. To avoid this,
 358          * ignore clock interrupt for a while.
 359          */
 360         if (watchdoc_clock > WATCHDOC_HZ * 15) {
 361                 firewire_xfer_timeout(fc);
 362                 fc->timeout(fc);
 363         } else
 364                 watchdoc_clock ++;
 365
 366         callout_reset(&fc->timeout_callout, hz / WATCHDOC_HZ,
 367                         (void *)firewire_watchdog, (void *)fc);
 368 }
 369
 370 /*
 371  * The attach routine.
 372  */
 373 static int
 374 firewire_attach(device_t dev)
 375 {
 376         int unit;
 377         struct firewire_softc *sc = device_get_softc(dev);
 378         device_t pa = device_get_parent(dev);
 379         struct firewire_comm *fc;
 380         struct proc *p;
 381
 382         fc = (struct firewire_comm *)device_get_softc(pa);
 383         sc->fc = fc;
 384         fc->status = FWBUSNOTREADY;
 385
 386         unit = device_get_unit(dev);
 387         if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
 388
 389         fwdev_makedev(sc);
 390
 391         CALLOUT_INIT(&sc->fc->timeout_callout);
 392         CALLOUT_INIT(&sc->fc->bmr_callout);
 393         CALLOUT_INIT(&sc->fc->busprobe_callout);
 394
 395         callout_reset(&sc->fc->timeout_callout, hz,
 396                         (void *)firewire_watchdog, (void *)sc->fc);
 397
 398         /* create thread */
 399         kthread_create(fw_bus_probe_thread, (void *)fc, &p,
 400                 0, 0, "fw%d_probe", unit);
 401
 402         /* Locate our children */
 403         bus_generic_probe(dev);
 404
 405         /* launch attachement of the added children */
 406         bus_generic_attach(dev);
 407
 408         /* bus_reset */
 409         fw_busreset(fc, FWBUSNOTREADY);
 410         fc->ibr(fc);
 411
 412         return 0;
 413 }
 414
 415 /*
 416  * Attach it as child.
 417  */
 418 static device_t
 419 firewire_add_child(device_t dev, int order, const char *name, int unit)
 420 {
 421         device_t child;
 422         struct firewire_softc *sc;
 423
 424         sc = (struct firewire_softc *)device_get_softc(dev);
 425         child = device_add_child(dev, name, unit);
 426         if (child) {
 427                 device_set_ivars(child, sc->fc);
 428                 device_probe_and_attach(child);
 429         }
 430
 431         return child;
 432 }
 433
 434 static int
 435 firewire_resume(device_t dev)
 436 {
 437         struct firewire_softc *sc;
 438
 439         sc = (struct firewire_softc *)device_get_softc(dev);
 440         sc->fc->status = FWBUSNOTREADY;
 441
 442         bus_generic_resume(dev);
 443
 444         return(0);
 445 }
 446
 447 /*
 448  * Dettach it.
 449  */
 450 static int
 451 firewire_detach(device_t dev)
 452 {
 453         struct firewire_softc *sc;
 454         struct firewire_comm *fc;
 455         struct fw_device *fwdev, *fwdev_next;
 456         int err;
 457
 458         sc = (struct firewire_softc *)device_get_softc(dev);
 459         fc = sc->fc;
 460         fc->status = FWBUSDETACH;
 461
 462         if ((err = fwdev_destroydev(sc)) != 0)
 463                 return err;
 464
 465         if ((err = bus_generic_detach(dev)) != 0)
 466                 return err;
 467
 468         callout_stop(&fc->timeout_callout);
 469         callout_stop(&fc->bmr_callout);
 470         callout_stop(&fc->busprobe_callout);
 471
 472         /* XXX xfree_free and untimeout on all xfers */
 473         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
 474                                                         fwdev = fwdev_next) {
 475                 fwdev_next = STAILQ_NEXT(fwdev, link);
 476                 free(fwdev, M_FW);
 477         }
 478         free(fc->topology_map, M_FW);
 479         free(fc->speed_map, M_FW);
 480         free(fc->crom_src_buf, M_FW);
 481
 482         wakeup(fc);
 483         if (tsleep(fc, PWAIT, "fwthr", hz * 60))
 484                 printf("firewire task thread didn't die\n");
 485
 486         return(0);
 487 }
 488 #if 0
 489 static int
 490 firewire_shutdown( device_t dev )
 491 {
 492         return 0;
 493 }
 494 #endif
 495
 496
 497 static void
 498 fw_xferq_drain(struct fw_xferq *xferq)
 499 {
 500         struct fw_xfer *xfer;
 501
 502         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 503                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 504                 xferq->queued --;
 505                 xfer->resp = EAGAIN;
 506                 xfer->state = FWXF_SENTERR;
 507                 fw_xfer_done(xfer);
 508         }
 509 }
 510
 511 void
 512 fw_drain_txq(struct firewire_comm *fc)
 513 {
 514         int i;
 515
 516         fw_xferq_drain(fc->atq);
 517         fw_xferq_drain(fc->ats);
 518         for(i = 0; i < fc->nisodma; i++)
 519                 fw_xferq_drain(fc->it[i]);
 520 }
 521
 522 static void
 523 fw_reset_csr(struct firewire_comm *fc)
 524 {
 525         int i;
 526
 527         CSRARC(fc, STATE_CLEAR)
 528                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 529         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 530         CSRARC(fc, NODE_IDS) = 0x3f;
 531
 532         CSRARC(fc, TOPO_MAP + 8) = 0;
 533         fc->irm = -1;
 534
 535         fc->max_node = -1;
 536
 537         for(i = 2; i < 0x100/4 - 2 ; i++){
 538                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 539         }
 540         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 541         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 542         CSRARC(fc, RESET_START) = 0;
 543         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 544         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 545         CSRARC(fc, CYCLE_TIME) = 0x0;
 546         CSRARC(fc, BUS_TIME) = 0x0;
 547         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 548         CSRARC(fc, BANDWIDTH_AV) = 4915;
 549         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 550         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 551         CSRARC(fc, IP_CHANNELS) = (1 << 31);
 552
 553         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 554         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 555         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 556                                 1 << 28 | 0xff << 16 | 0x09 << 8;
 557         CSRARC(fc, CONF_ROM + 0xc) = 0;
 558
 559 /* DV depend CSRs see blue book */
 560         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 561         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 562
 563         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
 564         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 565 }
 566
 567 static void
 568 fw_init_crom(struct firewire_comm *fc)
 569 {
 570         struct crom_src *src;
 571
 572         fc->crom_src_buf = (struct crom_src_buf *)
 573                 malloc(sizeof(struct crom_src_buf), M_FW, M_WAITOK | M_ZERO);
 574         if (fc->crom_src_buf == NULL)
 575                 return;
 576
 577         src = &fc->crom_src_buf->src;
 578         bzero(src, sizeof(struct crom_src));
 579
 580         /* BUS info sample */
 581         src->hdr.info_len = 4;
 582
 583         src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 584
 585         src->businfo.irmc = 1;
 586         src->businfo.cmc = 1;
 587         src->businfo.isc = 1;
 588         src->businfo.bmc = 1;
 589         src->businfo.pmc = 0;
 590         src->businfo.cyc_clk_acc = 100;
 591         src->businfo.max_rec = fc->maxrec;
 592         src->businfo.max_rom = MAXROM_4;
 593         src->businfo.generation = 1;
 594         src->businfo.link_spd = fc->speed;
 595
 596         src->businfo.eui64.hi = fc->eui.hi;
 597         src->businfo.eui64.lo = fc->eui.lo;
 598
 599         STAILQ_INIT(&src->chunk_list);
 600
 601         fc->crom_src = src;
 602         fc->crom_root = &fc->crom_src_buf->root;
 603 }
 604
 605 static void
 606 fw_reset_crom(struct firewire_comm *fc)
 607 {
 608         struct crom_src_buf *buf;
 609         struct crom_src *src;
 610         struct crom_chunk *root;
 611
 612         if (fc->crom_src_buf == NULL)
 613                 fw_init_crom(fc);
 614
 615         buf =  fc->crom_src_buf;
 616         src = fc->crom_src;
 617         root = fc->crom_root;
 618
 619         STAILQ_INIT(&src->chunk_list);
 620
 621         bzero(root, sizeof(struct crom_chunk));
 622         crom_add_chunk(src, NULL, root, 0);
 623         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 624         /* private company_id */
 625         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 626 #ifdef __DragonFly__
 627         crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
 628         crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
 629 #else
 630         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 631         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 632 #endif
 633         crom_add_simple_text(src, root, &buf->hw, hostname);
 634 }
 635
 636 /*
 637  * Called after bus reset.
 638  */
 639 void
 640 fw_busreset(struct firewire_comm *fc, uint32_t new_status)
 641 {
 642         struct firewire_dev_comm *fdc;
 643         struct crom_src *src;
 644         device_t *devlistp;
 645         void *newrom;
 646         int i, devcnt;
 647
 648         switch(fc->status){
 649         case FWBUSMGRELECT:
 650                 callout_stop(&fc->bmr_callout);
 651                 break;
 652         default:
 653                 break;
 654         }
 655         fc->status = new_status;
 656         fw_reset_csr(fc);
 657         fw_reset_crom(fc);
 658
 659         if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
 660                 for( i = 0 ; i < devcnt ; i++)
 661                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
 662                                 fdc = device_get_softc(devlistp[i]);
 663                                 if (fdc->post_busreset != NULL)
 664                                         fdc->post_busreset(fdc);
 665                         }
 666                 free(devlistp, M_TEMP);
 667         }
 668
 669         newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
 670         src = &fc->crom_src_buf->src;
 671         crom_load(src, (uint32_t *)newrom, CROMSIZE);
 672         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 673                 /* bump generation and reload */
 674                 src->businfo.generation ++;
 675                 /* generation must be between 0x2 and 0xF */
 676                 if (src->businfo.generation < 2)
 677                         src->businfo.generation ++;
 678                 crom_load(src, (uint32_t *)newrom, CROMSIZE);
 679                 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
 680         }
 681         free(newrom, M_FW);
 682 }
 683
 684 /* Call once after reboot */
 685 void fw_init(struct firewire_comm *fc)
 686 {
 687         int i;
 688 #ifdef FW_VMACCESS
 689         struct fw_xfer *xfer;
 690         struct fw_bind *fwb;
 691 #endif
 692
 693         fc->arq->queued = 0;
 694         fc->ars->queued = 0;
 695         fc->atq->queued = 0;
 696         fc->ats->queued = 0;
 697
 698         fc->arq->buf = NULL;
 699         fc->ars->buf = NULL;
 700         fc->atq->buf = NULL;
 701         fc->ats->buf = NULL;
 702
 703         fc->arq->flag = 0;
 704         fc->ars->flag = 0;
 705         fc->atq->flag = 0;
 706         fc->ats->flag = 0;
 707
 708         STAILQ_INIT(&fc->atq->q);
 709         STAILQ_INIT(&fc->ats->q);
 710
 711         for( i = 0 ; i < fc->nisodma ; i ++ ){
 712                 fc->it[i]->queued = 0;
 713                 fc->ir[i]->queued = 0;
 714
 715                 fc->it[i]->start = NULL;
 716                 fc->ir[i]->start = NULL;
 717
 718                 fc->it[i]->buf = NULL;
 719                 fc->ir[i]->buf = NULL;
 720
 721                 fc->it[i]->flag = FWXFERQ_STREAM;
 722                 fc->ir[i]->flag = FWXFERQ_STREAM;
 723
 724                 STAILQ_INIT(&fc->it[i]->q);
 725                 STAILQ_INIT(&fc->ir[i]->q);
 726         }
 727
 728         fc->arq->maxq = FWMAXQUEUE;
 729         fc->ars->maxq = FWMAXQUEUE;
 730         fc->atq->maxq = FWMAXQUEUE;
 731         fc->ats->maxq = FWMAXQUEUE;
 732
 733         for( i = 0 ; i < fc->nisodma ; i++){
 734                 fc->ir[i]->maxq = FWMAXQUEUE;
 735                 fc->it[i]->maxq = FWMAXQUEUE;
 736         }
 737 /* Initialize csr registers */
 738         fc->topology_map = (struct fw_topology_map *)malloc(
 739                                 sizeof(struct fw_topology_map),
 740                                 M_FW, M_NOWAIT | M_ZERO);
 741         fc->speed_map = (struct fw_speed_map *)malloc(
 742                                 sizeof(struct fw_speed_map),
 743                                 M_FW, M_NOWAIT | M_ZERO);
 744         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 745         CSRARC(fc, TOPO_MAP + 4) = 1;
 746         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 747         CSRARC(fc, SPED_MAP + 4) = 1;
 748
 749         STAILQ_INIT(&fc->devices);
 750
 751 /* Initialize Async handlers */
 752         STAILQ_INIT(&fc->binds);
 753         for( i = 0 ; i < 0x40 ; i++){
 754                 STAILQ_INIT(&fc->tlabels[i]);
 755         }
 756
 757 /* DV depend CSRs see blue book */
 758 #if 0
 759         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 760         CSRARC(fc, oPCR) = 0x8000007a;
 761         for(i = 4 ; i < 0x7c/4 ; i+=4){
 762                 CSRARC(fc, i + oPCR) = 0x8000007a;
 763         }
 764
 765         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 766         CSRARC(fc, iPCR) = 0x803f0000;
 767         for(i = 4 ; i < 0x7c/4 ; i+=4){
 768                 CSRARC(fc, i + iPCR) = 0x0;
 769         }
 770 #endif
 771
 772         fc->crom_src_buf = NULL;
 773
 774 #ifdef FW_VMACCESS
 775         xfer = fw_xfer_alloc();
 776         if(xfer == NULL) return;
 777
 778         fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT);
 779         if(fwb == NULL){
 780                 fw_xfer_free(xfer);
 781                 return;
 782         }
 783         xfer->hand = fw_vmaccess;
 784         xfer->fc = fc;
 785         xfer->sc = NULL;
 786
 787         fwb->start_hi = 0x2;
 788         fwb->start_lo = 0;
 789         fwb->addrlen = 0xffffffff;
 790         fwb->xfer = xfer;
 791         fw_bindadd(fc, fwb);
 792 #endif
 793 }
 794
 795 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
 796     ((fwb)->end < (addr))?1:0)
 797
 798 /*
 799  * To lookup bound process from IEEE1394 address.
 800  */
 801 struct fw_bind *
 802 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
 803 {
 804         u_int64_t addr;
 805         struct fw_bind *tfw;
 806
 807         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 808         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 809                 if (BIND_CMP(addr, tfw) == 0)
 810                         return(tfw);
 811         return(NULL);
 812 }
 813
 814 /*
 815  * To bind IEEE1394 address block to process.
 816  */
 817 int
 818 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 819 {
 820         struct fw_bind *tfw, *prev = NULL;
 821
 822         if (fwb->start > fwb->end) {
 823                 printf("%s: invalid range\n", __func__);
 824                 return EINVAL;
 825         }
 826
 827         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 828                 if (fwb->end < tfw->start)
 829                         break;
 830                 prev = tfw;
 831         }
 832         if (prev == NULL) {
 833                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 834                 return (0);
 835         }
 836         if (prev->end < fwb->start) {
 837                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 838                 return (0);
 839         }
 840
 841         printf("%s: bind failed\n", __func__);
 842         return (EBUSY);
 843 }
 844
 845 /*
 846  * To free IEEE1394 address block.
 847  */
 848 int
 849 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 850 {
 851 #if 0
 852         struct fw_xfer *xfer, *next;
 853 #endif
 854         struct fw_bind *tfw;
 855         int s;
 856
 857         s = splfw();
 858         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 859                 if (tfw == fwb) {
 860                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 861                         goto found;
 862                 }
 863
 864         printf("%s: no such binding\n", __func__);
 865         splx(s);
 866         return (1);
 867 found:
 868 #if 0
 869         /* shall we do this? */
 870         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 871                 next = STAILQ_NEXT(xfer, link);
 872                 fw_xfer_free(xfer);
 873         }
 874         STAILQ_INIT(&fwb->xferlist);
 875 #endif
 876
 877         splx(s);
 878         return 0;
 879 }
 880
 881 int
 882 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
 883     int slen, int rlen, int n,
 884     struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
 885 {
 886         int i, s;
 887         struct fw_xfer *xfer;
 888
 889         for (i = 0; i < n; i++) {
 890                 xfer = fw_xfer_alloc_buf(type, slen, rlen);
 891                 if (xfer == NULL)
 892                         return (n);
 893                 xfer->fc = fc;
 894                 xfer->sc = sc;
 895                 xfer->hand = hand;
 896                 s = splfw();
 897                 STAILQ_INSERT_TAIL(q, xfer, link);
 898                 splx(s);
 899         }
 900         return (n);
 901 }
 902
 903 void
 904 fw_xferlist_remove(struct fw_xferlist *q)
 905 {
 906         struct fw_xfer *xfer, *next;
 907
 908         for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
 909                 next = STAILQ_NEXT(xfer, link);
 910                 fw_xfer_free_buf(xfer);
 911         }
 912         STAILQ_INIT(q);
 913 }
 914
 915 /*
 916  * To free transaction label.
 917  */
 918 static void
 919 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
 920 {
 921         struct fw_xfer *txfer;
 922         int s;
 923
 924         if (xfer->tl < 0)
 925                 return;
 926
 927         s = splfw();
 928 #if 1   /* make sure the label is allocated */
 929         STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
 930                 if(txfer == xfer)
 931                         break;
 932         if (txfer == NULL) {
 933                 printf("%s: the xfer is not in the tlabel(%d)\n",
 934                     __FUNCTION__, xfer->tl);
 935                 splx(s);
 936                 return;
 937         }
 938 #endif
 939
 940         STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
 941         splx(s);
 942         return;
 943 }
 944
 945 /*
 946  * To obtain XFER structure by transaction label.
 947  */
 948 static struct fw_xfer *
 949 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel)
 950 {
 951         struct fw_xfer *xfer;
 952         int s = splfw();
 953
 954         STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
 955                 if(xfer->send.hdr.mode.hdr.dst == node) {
 956                         splx(s);
 957                         if (firewire_debug > 2)
 958                                 printf("fw_tl2xfer: found tl=%d\n", tlabel);
 959                         return(xfer);
 960                 }
 961         if (firewire_debug > 1)
 962                 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
 963         splx(s);
 964         return(NULL);
 965 }
 966
 967 /*
 968  * To allocate IEEE1394 XFER structure.
 969  */
 970 struct fw_xfer *
 971 fw_xfer_alloc(struct malloc_type *type)
 972 {
 973         struct fw_xfer *xfer;
 974
 975         xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
 976         if (xfer == NULL)
 977                 return xfer;
 978
 979         xfer->malloc = type;
 980
 981         return xfer;
 982 }
 983
 984 struct fw_xfer *
 985 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
 986 {
 987         struct fw_xfer *xfer;
 988
 989         xfer = fw_xfer_alloc(type);
 990         if (xfer == NULL)
 991                 return(NULL);
 992         xfer->send.pay_len = send_len;
 993         xfer->recv.pay_len = recv_len;
 994         if (send_len > 0) {
 995                 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
 996                 if (xfer->send.payload == NULL) {
 997                         fw_xfer_free(xfer);
 998                         return(NULL);
 999                 }
1000         }
1001         if (recv_len > 0) {
1002                 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1003                 if (xfer->recv.payload == NULL) {
1004                         if (xfer->send.payload != NULL)
1005                                 free(xfer->send.payload, type);
1006                         fw_xfer_free(xfer);
1007                         return(NULL);
1008                 }
1009         }
1010         return(xfer);
1011 }
1012
1013 /*
1014  * IEEE1394 XFER post process.
1015  */
1016 void
1017 fw_xfer_done(struct fw_xfer *xfer)
1018 {
1019         if (xfer->hand == NULL) {
1020                 printf("hand == NULL\n");
1021                 return;
1022         }
1023
1024         if (xfer->fc == NULL)
1025                 panic("fw_xfer_done: why xfer->fc is NULL?");
1026
1027         fw_tl_free(xfer->fc, xfer);
1028         xfer->hand(xfer);
1029 }
1030
1031 void
1032 fw_xfer_unload(struct fw_xfer* xfer)
1033 {
1034         int s;
1035
1036         if(xfer == NULL ) return;
1037         if(xfer->state == FWXF_INQ){
1038                 printf("fw_xfer_free FWXF_INQ\n");
1039                 s = splfw();
1040                 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1041                 xfer->q->queued --;
1042                 splx(s);
1043         }
1044         if (xfer->fc != NULL) {
1045 #if 1
1046                 if(xfer->state == FWXF_START)
1047                         /*
1048                          * This could happen if:
1049                          *  1. We call fwohci_arcv() before fwohci_txd().
1050                          *  2. firewire_watch() is called.
1051                          */
1052                         printf("fw_xfer_free FWXF_START\n");
1053 #endif
1054         }
1055         xfer->state = FWXF_INIT;
1056         xfer->resp = 0;
1057 }
1058 /*
1059  * To free IEEE1394 XFER structure.
1060  */
1061 void
1062 fw_xfer_free_buf( struct fw_xfer* xfer)
1063 {
1064         if (xfer == NULL) {
1065                 printf("%s: xfer == NULL\n", __func__);
1066                 return;
1067         }
1068         fw_xfer_unload(xfer);
1069         if(xfer->send.payload != NULL){
1070                 free(xfer->send.payload, xfer->malloc);
1071         }
1072         if(xfer->recv.payload != NULL){
1073                 free(xfer->recv.payload, xfer->malloc);
1074         }
1075         free(xfer, xfer->malloc);
1076 }
1077
1078 void
1079 fw_xfer_free( struct fw_xfer* xfer)
1080 {
1081         if (xfer == NULL) {
1082                 printf("%s: xfer == NULL\n", __func__);
1083                 return;
1084         }
1085         fw_xfer_unload(xfer);
1086         free(xfer, xfer->malloc);
1087 }
1088
1089 void
1090 fw_asy_callback_free(struct fw_xfer *xfer)
1091 {
1092 #if 0
1093         printf("asyreq done state=%d resp=%d\n",
1094                                 xfer->state, xfer->resp);
1095 #endif
1096         fw_xfer_free(xfer);
1097 }
1098
1099 /*
1100  * To configure PHY.
1101  */
1102 static void
1103 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1104 {
1105         struct fw_xfer *xfer;
1106         struct fw_pkt *fp;
1107
1108         fc->status = FWBUSPHYCONF;
1109
1110         xfer = fw_xfer_alloc(M_FWXFER);
1111         if (xfer == NULL)
1112                 return;
1113         xfer->fc = fc;
1114         xfer->hand = fw_asy_callback_free;
1115
1116         fp = &xfer->send.hdr;
1117         fp->mode.ld[1] = 0;
1118         if (root_node >= 0)
1119                 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1120         if (gap_count >= 0)
1121                 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1122         fp->mode.ld[2] = ~fp->mode.ld[1];
1123 /* XXX Dangerous, how to pass PHY packet to device driver */
1124         fp->mode.common.tcode |= FWTCODE_PHY;
1125
1126         if (firewire_debug)
1127                 printf("send phy_config root_node=%d gap_count=%d\n",
1128                                                 root_node, gap_count);
1129         fw_asyreq(fc, -1, xfer);
1130 }
1131
1132 #if 0
1133 /*
1134  * Dump self ID.
1135  */
1136 static void
1137 fw_print_sid(uint32_t sid)
1138 {
1139         union fw_self_id *s;
1140         s = (union fw_self_id *) &sid;
1141         printf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d"
1142                 " p0:%d p1:%d p2:%d i:%d m:%d\n",
1143                 s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1144                 s->p0.phy_speed, s->p0.phy_delay, s->p0.contender,
1145                 s->p0.power_class, s->p0.port0, s->p0.port1,
1146                 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1147 }
1148 #endif
1149
1150 /*
1151  * To receive self ID.
1152  */
1153 void fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len)
1154 {
1155         uint32_t *p;
1156         union fw_self_id *self_id;
1157         u_int i, j, node, c_port = 0, i_branch = 0;
1158
1159         fc->sid_cnt = len /(sizeof(uint32_t) * 2);
1160         fc->status = FWBUSINIT;
1161         fc->max_node = fc->nodeid & 0x3f;
1162         CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
1163         fc->status = FWBUSCYMELECT;
1164         fc->topology_map->crc_len = 2;
1165         fc->topology_map->generation ++;
1166         fc->topology_map->self_id_count = 0;
1167         fc->topology_map->node_count = 0;
1168         fc->speed_map->generation ++;
1169         fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1170         self_id = &fc->topology_map->self_id[0];
1171         for(i = 0; i < fc->sid_cnt; i ++){
1172                 if (sid[1] != ~sid[0]) {
1173                         printf("fw_sidrcv: invalid self-id packet\n");
1174                         sid += 2;
1175                         continue;
1176                 }
1177                 *self_id = *((union fw_self_id *)sid);
1178                 fc->topology_map->crc_len++;
1179                 if(self_id->p0.sequel == 0){
1180                         fc->topology_map->node_count ++;
1181                         c_port = 0;
1182 #if 0
1183                         fw_print_sid(sid[0]);
1184 #endif
1185                         node = self_id->p0.phy_id;
1186                         if(fc->max_node < node){
1187                                 fc->max_node = self_id->p0.phy_id;
1188                         }
1189                         /* XXX I'm not sure this is the right speed_map */
1190                         fc->speed_map->speed[node][node]
1191                                         = self_id->p0.phy_speed;
1192                         for (j = 0; j < node; j ++) {
1193                                 fc->speed_map->speed[j][node]
1194                                         = fc->speed_map->speed[node][j]
1195                                         = min(fc->speed_map->speed[j][j],
1196                                                         self_id->p0.phy_speed);
1197                         }
1198                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1199                           (self_id->p0.link_active && self_id->p0.contender)) {
1200                                 fc->irm = self_id->p0.phy_id;
1201                         }
1202                         if(self_id->p0.port0 >= 0x2){
1203                                 c_port++;
1204                         }
1205                         if(self_id->p0.port1 >= 0x2){
1206                                 c_port++;
1207                         }
1208                         if(self_id->p0.port2 >= 0x2){
1209                                 c_port++;
1210                         }
1211                 }
1212                 if(c_port > 2){
1213                         i_branch += (c_port - 2);
1214                 }
1215                 sid += 2;
1216                 self_id++;
1217                 fc->topology_map->self_id_count ++;
1218         }
1219         device_printf(fc->bdev, "%d nodes", fc->max_node + 1);
1220         /* CRC */
1221         fc->topology_map->crc = fw_crc16(
1222                         (uint32_t *)&fc->topology_map->generation,
1223                         fc->topology_map->crc_len * 4);
1224         fc->speed_map->crc = fw_crc16(
1225                         (uint32_t *)&fc->speed_map->generation,
1226                         fc->speed_map->crc_len * 4);
1227         /* byteswap and copy to CSR */
1228         p = (uint32_t *)fc->topology_map;
1229         for (i = 0; i <= fc->topology_map->crc_len; i++)
1230                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1231         p = (uint32_t *)fc->speed_map;
1232         CSRARC(fc, SPED_MAP) = htonl(*p++);
1233         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1234         /* don't byte-swap uint8_t array */
1235         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1236
1237         fc->max_hop = fc->max_node - i_branch;
1238         printf(", maxhop <= %d", fc->max_hop);
1239
1240         if(fc->irm == -1 ){
1241                 printf(", Not found IRM capable node");
1242         }else{
1243                 printf(", cable IRM = %d", fc->irm);
1244                 if (fc->irm == fc->nodeid)
1245                         printf(" (me)");
1246         }
1247         printf("\n");
1248
1249         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1250                 if (fc->irm == fc->nodeid) {
1251                         fc->status = FWBUSMGRDONE;
1252                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1253                         fw_bmr(fc);
1254                 } else {
1255                         fc->status = FWBUSMGRELECT;
1256                         callout_reset(&fc->bmr_callout, hz/8,
1257                                 (void *)fw_try_bmr, (void *)fc);
1258                 }
1259         } else
1260                 fc->status = FWBUSMGRDONE;
1261
1262         callout_reset(&fc->busprobe_callout, hz/4,
1263                         (void *)fw_bus_probe, (void *)fc);
1264 }
1265
1266 /*
1267  * To probe devices on the IEEE1394 bus.
1268  */
1269 static void
1270 fw_bus_probe(struct firewire_comm *fc)
1271 {
1272         int s;
1273         struct fw_device *fwdev;
1274
1275         s = splfw();
1276         fc->status = FWBUSEXPLORE;
1277
1278         /* Invalidate all devices, just after bus reset. */
1279         STAILQ_FOREACH(fwdev, &fc->devices, link)
1280                 if (fwdev->status != FWDEVINVAL) {
1281                         fwdev->status = FWDEVINVAL;
1282                         fwdev->rcnt = 0;
1283                 }
1284         splx(s);
1285
1286         wakeup((void *)fc);
1287 }
1288
1289 static int
1290 fw_explore_read_quads(struct fw_device *fwdev, int offset,
1291     uint32_t *quad, int n)
1292 {
1293         struct fw_xfer *xfer;
1294         uint32_t tmp;
1295         int i, error;
1296
1297         for (i = 0; i < n; i ++, offset += sizeof(uint32_t)) {
1298                 xfer = fwmem_read_quad(fwdev, NULL, -1,
1299                     0xffff, 0xf0000000 | offset, (void *)&tmp,
1300                     fw_asy_callback);
1301                 if (xfer == NULL)
1302                         return (-1);
1303                 tsleep((void *)xfer, PWAIT|PCATCH, "rquad", 0);
1304
1305                 if (xfer->resp == 0)
1306                         quad[i] = ntohl(tmp);
1307
1308                 error = xfer->resp;
1309                 fw_xfer_free(xfer);
1310                 if (error)
1311                         return (error);
1312         }
1313         return (0);
1314 }
1315
1316
1317 static int
1318 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1319 {
1320         int err, i, off;
1321         struct csrdirectory *dir;
1322         struct csrreg *reg;
1323
1324         dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1325         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1326             (uint32_t *)dir, 1);
1327         if (err)
1328                 return (-1);
1329
1330         offset += sizeof(uint32_t);
1331         reg = (struct csrreg *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1332         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1333             (uint32_t *)reg, dir->crc_len);
1334         if (err)
1335                 return (-1);
1336
1337         /* XXX check CRC */
1338
1339         off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1340         if (fwdev->rommax < off)
1341                 fwdev->rommax = off;
1342
1343         if (recur == 0)
1344                 return (0);
1345
1346         for (i = 0; i < dir->crc_len; i ++, offset += sizeof(uint32_t)) {
1347                 if (reg[i].key == CROM_UDIR)
1348                         recur = 1;
1349                 else if (reg[i].key == CROM_TEXTLEAF)
1350                         recur = 0;
1351                 else
1352                         continue;
1353
1354                 off = offset + reg[i].val * sizeof(uint32_t);
1355                 if (off > CROMSIZE) {
1356                         printf("%s: invalid offset %d\n", __FUNCTION__, off);
1357                         return(-1);
1358                 }
1359                 err = fw_explore_csrblock(fwdev, off, recur);
1360                 if (err)
1361                         return (-1);
1362         }
1363         return (0);
1364 }
1365
1366 static int
1367 fw_explore_node(struct fw_device *dfwdev)
1368 {
1369         struct firewire_comm *fc;
1370         struct fw_device *fwdev, *pfwdev, *tfwdev;
1371         uint32_t *csr;
1372         struct csrhdr *hdr;
1373         struct bus_info *binfo;
1374         int err, node, spd;
1375
1376         fc = dfwdev->fc;
1377         csr = dfwdev->csrrom;
1378         node = dfwdev->dst;
1379
1380         /* First quad */
1381         err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
1382         if (err)
1383                 return (-1);
1384         hdr = (struct csrhdr *)&csr[0];
1385         if (hdr->info_len != 4) {
1386                 if (firewire_debug)
1387                         printf("node%d: wrong bus info len(%d)\n",
1388                             node, hdr->info_len);
1389                 return (-1);
1390         }
1391
1392         /* bus info */
1393         err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1394         if (err)
1395                 return (-1);
1396         binfo = (struct bus_info *)&csr[1];
1397         if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1398                 if (firewire_debug)
1399                         printf("node%d: invalid bus name 0x%08x\n",
1400                             node, binfo->bus_name);
1401                 return (-1);
1402         }
1403         spd = fc->speed_map->speed[fc->nodeid][node];
1404         STAILQ_FOREACH(fwdev, &fc->devices, link)
1405                 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1406                         break;
1407         if (fwdev == NULL) {
1408                 /* new device */
1409                 fwdev = malloc(sizeof(struct fw_device), M_FW,
1410                                                 M_NOWAIT | M_ZERO);
1411                 if (fwdev == NULL) {
1412                         if (firewire_debug)
1413                                 printf("node%d: no memory\n", node);
1414                         return (-1);
1415                 }
1416                 fwdev->fc = fc;
1417                 fwdev->eui = binfo->eui64;
1418                 /* inesrt into sorted fwdev list */
1419                 pfwdev = NULL;
1420                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1421                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1422                                 (tfwdev->eui.hi == fwdev->eui.hi &&
1423                                 tfwdev->eui.lo > fwdev->eui.lo))
1424                                 break;
1425                         pfwdev = tfwdev;
1426                 }
1427                 if (pfwdev == NULL)
1428                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1429                 else
1430                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1431
1432                 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1433                     linkspeed[spd],
1434                     fwdev->eui.hi, fwdev->eui.lo);
1435         }
1436         fwdev->dst = node;
1437         fwdev->status = FWDEVINIT;
1438         fwdev->speed = spd;
1439
1440         /* unchanged ? */
1441         if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) {
1442                 if (firewire_debug)
1443                         printf("node%d: crom unchanged\n", node);
1444                 return (0);
1445         }
1446
1447         bzero(&fwdev->csrrom[0], CROMSIZE);
1448
1449         /* copy first quad and bus info block */
1450         bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5);
1451         fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1452
1453         err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1454
1455         if (err) {
1456                 fwdev->status = FWDEVINVAL;
1457                 fwdev->csrrom[0] = 0;
1458         }
1459         return (err);
1460
1461 }
1462
1463 /*
1464  * Find the self_id packet for a node, ignoring sequels.
1465  */
1466 static union fw_self_id *
1467 fw_find_self_id(struct firewire_comm *fc, int node)
1468 {
1469         uint32_t i;
1470         union fw_self_id *s;
1471
1472         for (i = 0; i < fc->topology_map->self_id_count; i++) {
1473                 s = &fc->topology_map->self_id[i];
1474                 if (s->p0.sequel)
1475                         continue;
1476                 if (s->p0.phy_id == node)
1477                         return s;
1478         }
1479         return 0;
1480 }
1481
1482 static void
1483 fw_explore(struct firewire_comm *fc)
1484 {
1485         int node, err, s, i, todo, todo2, trys;
1486         char nodes[63];
1487         struct fw_device dfwdev;
1488
1489         todo = 0;
1490         /* setup dummy fwdev */
1491         dfwdev.fc = fc;
1492         dfwdev.speed = 0;
1493         dfwdev.maxrec = 8; /* 512 */
1494         dfwdev.status = FWDEVINIT;
1495
1496         for (node = 0; node <= fc->max_node; node ++) {
1497                 /* We don't probe myself and linkdown nodes */
1498                 if (node == fc->nodeid)
1499                         continue;
1500                 if (!fw_find_self_id(fc, node)->p0.link_active) {
1501                         if (firewire_debug)
1502                                 printf("node%d: link down\n", node);
1503                         continue;
1504                 }
1505                 nodes[todo++] = node;
1506         }
1507
1508         s = splfw();
1509         for (trys = 0; todo > 0 && trys < 3; trys ++) {
1510                 todo2 = 0;
1511                 for (i = 0; i < todo; i ++) {
1512                         dfwdev.dst = nodes[i];
1513                         err = fw_explore_node(&dfwdev);
1514                         if (err)
1515                                 nodes[todo2++] = nodes[i];
1516                         if (firewire_debug)
1517                                 printf("%s: node %d, err = %d\n",
1518                                         __FUNCTION__, node, err);
1519                 }
1520                 todo = todo2;
1521         }
1522         splx(s);
1523 }
1524
1525
1526 static void
1527 fw_bus_probe_thread(void *arg)
1528 {
1529         struct firewire_comm *fc;
1530
1531         fc = (struct firewire_comm *)arg;
1532
1533         mtx_lock(&Giant);
1534         while (1) {
1535                 if (fc->status == FWBUSEXPLORE) {
1536                         fw_explore(fc);
1537                         fc->status = FWBUSEXPDONE;
1538                         if (firewire_debug)
1539                                 printf("bus_explore done\n");
1540                         fw_attach_dev(fc);
1541                 } else if (fc->status == FWBUSDETACH)
1542                         break;
1543                 tsleep((void *)fc, PWAIT|PCATCH, "-", 0);
1544         }
1545         mtx_unlock(&Giant);
1546         wakeup(fc);
1547         kthread_exit(0);
1548 }
1549
1550 /*
1551  * To attach sub-devices layer onto IEEE1394 bus.
1552  */
1553 static void
1554 fw_attach_dev(struct firewire_comm *fc)
1555 {
1556         struct fw_device *fwdev, *next;
1557         int i, err;
1558         device_t *devlistp;
1559         int devcnt;
1560         struct firewire_dev_comm *fdc;
1561
1562         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1563                 next = STAILQ_NEXT(fwdev, link);
1564                 if (fwdev->status == FWDEVINIT) {
1565                         fwdev->status = FWDEVATTACHED;
1566                 } else if (fwdev->status == FWDEVINVAL) {
1567                         fwdev->rcnt ++;
1568                         if (fwdev->rcnt > hold_count) {
1569                                 /*
1570                                  * Remove devices which have not been seen
1571                                  * for a while.
1572                                  */
1573                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1574                                     link);
1575                                 free(fwdev, M_FW);
1576                         }
1577                 }
1578         }
1579
1580         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1581         if( err != 0 )
1582                 return;
1583         for( i = 0 ; i < devcnt ; i++){
1584                 if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
1585                         fdc = device_get_softc(devlistp[i]);
1586                         if (fdc->post_explore != NULL)
1587                                 fdc->post_explore(fdc);
1588                 }
1589         }
1590         free(devlistp, M_TEMP);
1591
1592         return;
1593 }
1594
1595 /*
1596  * To allocate unique transaction label.
1597  */
1598 static int
1599 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1600 {
1601         u_int i;
1602         struct fw_xfer *txfer;
1603         int s;
1604         static uint32_t label = 0;
1605
1606         s = splfw();
1607         for( i = 0 ; i < 0x40 ; i ++){
1608                 label = (label + 1) & 0x3f;
1609                 STAILQ_FOREACH(txfer, &fc->tlabels[label], tlabel)
1610                         if (txfer->send.hdr.mode.hdr.dst ==
1611                             xfer->send.hdr.mode.hdr.dst)
1612                                 break;
1613                 if(txfer == NULL) {
1614                         STAILQ_INSERT_TAIL(&fc->tlabels[label], xfer, tlabel);
1615                         splx(s);
1616                         if (firewire_debug > 1)
1617                                 printf("fw_get_tlabel: dst=%d tl=%d\n",
1618                                     xfer->send.hdr.mode.hdr.dst, label);
1619                         return(label);
1620                 }
1621         }
1622         splx(s);
1623
1624         if (firewire_debug > 1)
1625                 printf("fw_get_tlabel: no free tlabel\n");
1626         return(-1);
1627 }
1628
1629 static void
1630 fw_rcv_copy(struct fw_rcv_buf *rb)
1631 {
1632         struct fw_pkt *pkt;
1633         u_char *p;
1634         struct tcode_info *tinfo;
1635         u_int res, i, len, plen;
1636
1637         rb->xfer->recv.spd = rb->spd;
1638
1639         pkt = (struct fw_pkt *)rb->vec->iov_base;
1640         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1641
1642         /* Copy header */
1643         p = (u_char *)&rb->xfer->recv.hdr;
1644         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1645         rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
1646         rb->vec->iov_len -= tinfo->hdr_len;
1647
1648         /* Copy payload */
1649         p = (u_char *)rb->xfer->recv.payload;
1650         res = rb->xfer->recv.pay_len;
1651
1652         /* special handling for RRESQ */
1653         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1654             p != NULL && res >= sizeof(uint32_t)) {
1655                 *(uint32_t *)p = pkt->mode.rresq.data;
1656                 rb->xfer->recv.pay_len = sizeof(uint32_t);
1657                 return;
1658         }
1659
1660         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1661                 return;
1662
1663         plen = pkt->mode.rresb.len;
1664
1665         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1666                 len = MIN(rb->vec->iov_len, plen);
1667                 if (res < len) {
1668                         printf("rcv buffer(%d) is %d bytes short.\n",
1669                             rb->xfer->recv.pay_len, len - res);
1670                         len = res;
1671                 }
1672                 bcopy(rb->vec->iov_base, p, len);
1673                 p += len;
1674                 res -= len;
1675                 plen -= len;
1676                 if (res == 0 || plen == 0)
1677                         break;
1678         }
1679         rb->xfer->recv.pay_len -= res;
1680
1681 }
1682
1683 /*
1684  * Generic packet receiving process.
1685  */
1686 void
1687 fw_rcv(struct fw_rcv_buf *rb)
1688 {
1689         struct fw_pkt *fp, *resfp;
1690         struct fw_bind *bind;
1691         int tcode;
1692         int i, len, oldstate;
1693 #if 0
1694         {
1695                 uint32_t *qld;
1696                 int i;
1697                 qld = (uint32_t *)buf;
1698                 printf("spd %d len:%d\n", spd, len);
1699                 for( i = 0 ; i <= len && i < 32; i+= 4){
1700                         printf("0x%08x ", ntohl(qld[i/4]));
1701                         if((i % 16) == 15) printf("\n");
1702                 }
1703                 if((i % 16) != 15) printf("\n");
1704         }
1705 #endif
1706         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1707         tcode = fp->mode.common.tcode;
1708         switch (tcode) {
1709         case FWTCODE_WRES:
1710         case FWTCODE_RRESQ:
1711         case FWTCODE_RRESB:
1712         case FWTCODE_LRES:
1713                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1714                                         fp->mode.hdr.tlrt >> 2);
1715                 if(rb->xfer == NULL) {
1716                         printf("fw_rcv: unknown response "
1717                             "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1718                             tcode_str[tcode], tcode,
1719                             fp->mode.hdr.src,
1720                             fp->mode.hdr.tlrt >> 2,
1721                             fp->mode.hdr.tlrt & 3,
1722                             fp->mode.rresq.data);
1723 #if 1
1724                         printf("try ad-hoc work around!!\n");
1725                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1726                                         (fp->mode.hdr.tlrt >> 2)^3);
1727                         if (rb->xfer == NULL) {
1728                                 printf("no use...\n");
1729                                 return;
1730                         }
1731 #else
1732                         return;
1733 #endif
1734                 }
1735                 fw_rcv_copy(rb);
1736                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1737                         rb->xfer->resp = EIO;
1738                 else
1739                         rb->xfer->resp = 0;
1740                 /* make sure the packet is drained in AT queue */
1741                 oldstate = rb->xfer->state;
1742                 rb->xfer->state = FWXF_RCVD;
1743                 switch (oldstate) {
1744                 case FWXF_SENT:
1745                         fw_xfer_done(rb->xfer);
1746                         break;
1747                 case FWXF_START:
1748 #if 0
1749                         if (firewire_debug)
1750                                 printf("not sent yet tl=%x\n", rb->xfer->tl);
1751 #endif
1752                         break;
1753                 default:
1754                         printf("unexpected state %d\n", rb->xfer->state);
1755                 }
1756                 return;
1757         case FWTCODE_WREQQ:
1758         case FWTCODE_WREQB:
1759         case FWTCODE_RREQQ:
1760         case FWTCODE_RREQB:
1761         case FWTCODE_LREQ:
1762                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1763                         fp->mode.rreqq.dest_lo);
1764                 if(bind == NULL){
1765                         printf("Unknown service addr 0x%04x:0x%08x %s(%x)"
1766 #if defined(__DragonFly__) || __FreeBSD_version < 500000
1767                             " src=0x%x data=%lx\n",
1768 #else
1769                             " src=0x%x data=%x\n",
1770 #endif
1771                             fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo,
1772                             tcode_str[tcode], tcode,
1773                             fp->mode.hdr.src, ntohl(fp->mode.wreqq.data));
1774                         if (rb->fc->status == FWBUSRESET) {
1775                                 printf("fw_rcv: cannot respond(bus reset)!\n");
1776                                 return;
1777                         }
1778                         rb->xfer = fw_xfer_alloc(M_FWXFER);
1779                         if(rb->xfer == NULL){
1780                                 return;
1781                         }
1782                         rb->xfer->send.spd = rb->spd;
1783                         rb->xfer->send.pay_len = 0;
1784                         resfp = &rb->xfer->send.hdr;
1785                         switch (tcode) {
1786                         case FWTCODE_WREQQ:
1787                         case FWTCODE_WREQB:
1788                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
1789                                 break;
1790                         case FWTCODE_RREQQ:
1791                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
1792                                 break;
1793                         case FWTCODE_RREQB:
1794                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
1795                                 break;
1796                         case FWTCODE_LREQ:
1797                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
1798                                 break;
1799                         }
1800                         resfp->mode.hdr.dst = fp->mode.hdr.src;
1801                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
1802                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
1803                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
1804                         resfp->mode.rresb.extcode = 0;
1805                         resfp->mode.rresb.len = 0;
1806 /*
1807                         rb->xfer->hand = fw_asy_callback;
1808 */
1809                         rb->xfer->hand = fw_xfer_free;
1810                         if(fw_asyreq(rb->fc, -1, rb->xfer)){
1811                                 fw_xfer_free(rb->xfer);
1812                                 return;
1813                         }
1814                         return;
1815                 }
1816                 len = 0;
1817                 for (i = 0; i < rb->nvec; i ++)
1818                         len += rb->vec[i].iov_len;
1819                 rb->xfer = STAILQ_FIRST(&bind->xferlist);
1820                 if (rb->xfer == NULL) {
1821 #if 1
1822                         printf("Discard a packet for this bind.\n");
1823 #endif
1824                         return;
1825                 }
1826                 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1827                 fw_rcv_copy(rb);
1828                 rb->xfer->hand(rb->xfer);
1829                 return;
1830 #if 0 /* shouldn't happen ?? or for GASP */
1831         case FWTCODE_STREAM:
1832         {
1833                 struct fw_xferq *xferq;
1834
1835                 xferq = rb->fc->ir[sub];
1836 #if 0
1837                 printf("stream rcv dma %d len %d off %d spd %d\n",
1838                         sub, len, off, spd);
1839 #endif
1840                 if(xferq->queued >= xferq->maxq) {
1841                         printf("receive queue is full\n");
1842                         return;
1843                 }
1844                 /* XXX get xfer from xfer queue, we don't need copy for
1845                         per packet mode */
1846                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
1847                                                 vec[0].iov_len);
1848                 if (rb->xfer == NULL)
1849                         return;
1850                 fw_rcv_copy(rb)
1851                 s = splfw();
1852                 xferq->queued++;
1853                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
1854                 splx(s);
1855                 sc = device_get_softc(rb->fc->bdev);
1856 #if defined(__DragonFly__) || __FreeBSD_version < 500000
1857                 if (&xferq->rsel.si_pid != 0)
1858 #else
1859                 if (SEL_WAITING(&xferq->rsel))
1860 #endif
1861                         selwakeuppri(&xferq->rsel, FWPRI);
1862                 if (xferq->flag & FWXFERQ_WAKEUP) {
1863                         xferq->flag &= ~FWXFERQ_WAKEUP;
1864                         wakeup((caddr_t)xferq);
1865                 }
1866                 if (xferq->flag & FWXFERQ_HANDLER) {
1867                         xferq->hand(xferq);
1868                 }
1869                 return;
1870                 break;
1871         }
1872 #endif
1873         default:
1874                 printf("fw_rcv: unknow tcode %d\n", tcode);
1875                 break;
1876         }
1877 }
1878
1879 /*
1880  * Post process for Bus Manager election process.
1881  */
1882 static void
1883 fw_try_bmr_callback(struct fw_xfer *xfer)
1884 {
1885         struct firewire_comm *fc;
1886         int bmr;
1887
1888         if (xfer == NULL)
1889                 return;
1890         fc = xfer->fc;
1891         if (xfer->resp != 0)
1892                 goto error;
1893         if (xfer->recv.payload == NULL)
1894                 goto error;
1895         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
1896                 goto error;
1897
1898         bmr = ntohl(xfer->recv.payload[0]);
1899         if (bmr == 0x3f)
1900                 bmr = fc->nodeid;
1901
1902         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
1903         fw_xfer_free_buf(xfer);
1904         fw_bmr(fc);
1905         return;
1906
1907 error:
1908         device_printf(fc->bdev, "bus manager election failed\n");
1909         fw_xfer_free_buf(xfer);
1910 }
1911
1912
1913 /*
1914  * To candidate Bus Manager election process.
1915  */
1916 static void
1917 fw_try_bmr(void *arg)
1918 {
1919         struct fw_xfer *xfer;
1920         struct firewire_comm *fc = (struct firewire_comm *)arg;
1921         struct fw_pkt *fp;
1922         int err = 0;
1923
1924         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
1925         if(xfer == NULL){
1926                 return;
1927         }
1928         xfer->send.spd = 0;
1929         fc->status = FWBUSMGRELECT;
1930
1931         fp = &xfer->send.hdr;
1932         fp->mode.lreq.dest_hi = 0xffff;
1933         fp->mode.lreq.tlrt = 0;
1934         fp->mode.lreq.tcode = FWTCODE_LREQ;
1935         fp->mode.lreq.pri = 0;
1936         fp->mode.lreq.src = 0;
1937         fp->mode.lreq.len = 8;
1938         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
1939         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
1940         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
1941         xfer->send.payload[0] = htonl(0x3f);
1942         xfer->send.payload[1] = htonl(fc->nodeid);
1943         xfer->hand = fw_try_bmr_callback;
1944
1945         err = fw_asyreq(fc, -1, xfer);
1946         if(err){
1947                 fw_xfer_free_buf(xfer);
1948                 return;
1949         }
1950         return;
1951 }
1952
1953 #ifdef FW_VMACCESS
1954 /*
1955  * Software implementation for physical memory block access.
1956  * XXX:Too slow, usef for debug purpose only.
1957  */
1958 static void
1959 fw_vmaccess(struct fw_xfer *xfer){
1960         struct fw_pkt *rfp, *sfp = NULL;
1961         uint32_t *ld = (uint32_t *)xfer->recv.buf;
1962
1963         printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
1964                         xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
1965         printf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
1966         if(xfer->resp != 0){
1967                 fw_xfer_free( xfer);
1968                 return;
1969         }
1970         if(xfer->recv.buf == NULL){
1971                 fw_xfer_free( xfer);
1972                 return;
1973         }
1974         rfp = (struct fw_pkt *)xfer->recv.buf;
1975         switch(rfp->mode.hdr.tcode){
1976                 /* XXX need fix for 64bit arch */
1977                 case FWTCODE_WREQB:
1978                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
1979                         xfer->send.len = 12;
1980                         sfp = (struct fw_pkt *)xfer->send.buf;
1981                         bcopy(rfp->mode.wreqb.payload,
1982                                 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
1983                         sfp->mode.wres.tcode = FWTCODE_WRES;
1984                         sfp->mode.wres.rtcode = 0;
1985                         break;
1986                 case FWTCODE_WREQQ:
1987                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
1988                         xfer->send.len = 12;
1989                         sfp->mode.wres.tcode = FWTCODE_WRES;
1990                         *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
1991                         sfp->mode.wres.rtcode = 0;
1992                         break;
1993                 case FWTCODE_RREQB:
1994                         xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT);
1995                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
1996                         sfp = (struct fw_pkt *)xfer->send.buf;
1997                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
1998                                 sfp->mode.rresb.payload, (uint16_t)ntohs(rfp->mode.rreqb.len));
1999                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2000                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2001                         sfp->mode.rresb.rtcode = 0;
2002                         sfp->mode.rresb.extcode = 0;
2003                         break;
2004                 case FWTCODE_RREQQ:
2005                         xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2006                         xfer->send.len = 16;
2007                         sfp = (struct fw_pkt *)xfer->send.buf;
2008                         sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2009                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2010                         sfp->mode.rresb.rtcode = 0;
2011                         break;
2012                 default:
2013                         fw_xfer_free( xfer);
2014                         return;
2015         }
2016         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2017         xfer->dst = ntohs(rfp->mode.hdr.src);
2018         xfer->hand = fw_xfer_free;
2019
2020         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2021         sfp->mode.hdr.pri = 0;
2022
2023         fw_asyreq(xfer->fc, -1, xfer);
2024 /**/
2025         return;
2026 }
2027 #endif
2028
2029 /*
2030  * CRC16 check-sum for IEEE1394 register blocks.
2031  */
2032 uint16_t
2033 fw_crc16(uint32_t *ptr, uint32_t len){
2034         uint32_t i, sum, crc = 0;
2035         int shift;
2036         len = (len + 3) & ~3;
2037         for(i = 0 ; i < len ; i+= 4){
2038                 for( shift = 28 ; shift >= 0 ; shift -= 4){
2039                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2040                         crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2041                 }
2042                 crc &= 0xffff;
2043         }
2044         return((uint16_t) crc);
2045 }
2046
2047 static int
2048 fw_bmr(struct firewire_comm *fc)
2049 {
2050         struct fw_device fwdev;
2051         union fw_self_id *self_id;
2052         int cmstr;
2053         uint32_t quad;
2054
2055         /* Check to see if the current root node is cycle master capable */
2056         self_id = fw_find_self_id(fc, fc->max_node);
2057         if (fc->max_node > 0) {
2058                 /* XXX check cmc bit of businfo block rather than contender */
2059                 if (self_id->p0.link_active && self_id->p0.contender)
2060                         cmstr = fc->max_node;
2061                 else {
2062                         device_printf(fc->bdev,
2063                                 "root node is not cycle master capable\n");
2064                         /* XXX shall we be the cycle master? */
2065                         cmstr = fc->nodeid;
2066                         /* XXX need bus reset */
2067                 }
2068         } else
2069                 cmstr = -1;
2070
2071         device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID));
2072         if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2073                 /* We are not the bus manager */
2074                 printf("\n");
2075                 return(0);
2076         }
2077         printf("(me)\n");
2078
2079         /* Optimize gapcount */
2080         if(fc->max_hop <= MAX_GAPHOP )
2081                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2082         /* If we are the cycle master, nothing to do */
2083         if (cmstr == fc->nodeid || cmstr == -1)
2084                 return 0;
2085         /* Bus probe has not finished, make dummy fwdev for cmstr */
2086         bzero(&fwdev, sizeof(fwdev));
2087         fwdev.fc = fc;
2088         fwdev.dst = cmstr;
2089         fwdev.speed = 0;
2090         fwdev.maxrec = 8; /* 512 */
2091         fwdev.status = FWDEVINIT;
2092         /* Set cmstr bit on the cycle master */
2093         quad = htonl(1 << 8);
2094         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2095                 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2096
2097         return 0;
2098 }
2099
2100 static int
2101 fw_modevent(module_t mode, int type, void *data)
2102 {
2103         int err = 0;
2104 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2105         static eventhandler_tag fwdev_ehtag = NULL;
2106 #endif
2107
2108         switch (type) {
2109         case MOD_LOAD:
2110 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2111                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2112                                                 fwdev_clone, 0, 1000);
2113 #endif
2114                 break;
2115         case MOD_UNLOAD:
2116 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2117                 if (fwdev_ehtag != NULL)
2118                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2119 #endif
2120                 break;
2121         case MOD_SHUTDOWN:
2122                 break;
2123         default:
2124                 return (EOPNOTSUPP);
2125         }
2126         return (err);
2127 }
2128
2129
2130 #ifdef __DragonFly__
2131 DECLARE_DUMMY_MODULE(firewire);
2132 #endif
2133 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0);
2134 MODULE_VERSION(firewire, 1);