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