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 #include <sys/kdb.h>
  50
  51 #if defined(__DragonFly__) || __FreeBSD_version < 500000
  52 #include <machine/clock.h>      /* for DELAY() */
  53 #endif
  54
  55 #include <sys/bus.h>            /* used by smbus and newbus */
  56 #include <machine/bus.h>
  57
  58 #ifdef __DragonFly__
  59 #include "firewire.h"
  60 #include "firewirereg.h"
  61 #include "fwmem.h"
  62 #include "iec13213.h"
  63 #include "iec68113.h"
  64 #else
  65 #include <dev/firewire/firewire.h>
  66 #include <dev/firewire/firewirereg.h>
  67 #include <dev/firewire/fwmem.h>
  68 #include <dev/firewire/iec13213.h>
  69 #include <dev/firewire/iec68113.h>
  70 #endif
  71
  72 struct crom_src_buf {
  73         struct crom_src src;
  74         struct crom_chunk root;
  75         struct crom_chunk vendor;
  76         struct crom_chunk hw;
  77 };
  78
  79 int firewire_debug=0, try_bmr=1, hold_count=3;
  80 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  81         "FireWire driver debug flag");
  82 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
  83 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  84         "Try to be a bus manager");
  85 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  86         "Number of count of bus resets for removing lost device information");
  87
  88 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  89 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  90
  91 #define FW_MAXASYRTY 4
  92
  93 devclass_t firewire_devclass;
  94
  95 static void firewire_identify   (driver_t *, device_t);
  96 static int firewire_probe       (device_t);
  97 static int firewire_attach      (device_t);
  98 static int firewire_detach      (device_t);
  99 static int firewire_resume      (device_t);
 100 static void firewire_xfer_timeout(void *, int);
 101 #if 0
 102 static int firewire_shutdown    (device_t);
 103 #endif
 104 static device_t firewire_add_child   (device_t, int, const char *, int);
 105 static void fw_try_bmr (void *);
 106 static void fw_try_bmr_callback (struct fw_xfer *);
 107 static void fw_asystart (struct fw_xfer *);
 108 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
 109 static void fw_bus_probe (struct firewire_comm *);
 110 static void fw_attach_dev (struct firewire_comm *);
 111 static void fw_bus_probe_thread(void *);
 112 #ifdef FW_VMACCESS
 113 static void fw_vmaccess (struct fw_xfer *);
 114 #endif
 115 static int fw_bmr (struct firewire_comm *);
 116 static void fw_dump_hdr(struct fw_pkt *, char *);
 117
 118 static device_method_t firewire_methods[] = {
 119         /* Device interface */
 120         DEVMETHOD(device_identify,      firewire_identify),
 121         DEVMETHOD(device_probe,         firewire_probe),
 122         DEVMETHOD(device_attach,        firewire_attach),
 123         DEVMETHOD(device_detach,        firewire_detach),
 124         DEVMETHOD(device_suspend,       bus_generic_suspend),
 125         DEVMETHOD(device_resume,        firewire_resume),
 126         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 127
 128         /* Bus interface */
 129         DEVMETHOD(bus_add_child,        firewire_add_child),
 130         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 131
 132         { 0, 0 }
 133 };
 134 char *linkspeed[] = {
 135         "S100", "S200", "S400", "S800",
 136         "S1600", "S3200", "undef", "undef"
 137 };
 138
 139 static char *tcode_str[] = {
 140         "WREQQ", "WREQB", "WRES",   "undef",
 141         "RREQQ", "RREQB", "RRESQ",  "RRESB",
 142         "CYCS",  "LREQ",  "STREAM", "LRES",
 143         "undef", "undef", "PHY",    "undef"
 144 };
 145
 146 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
 147 #define MAX_GAPHOP 15
 148 u_int gap_cnt[] = { 5,  5,  7,  8, 10, 13, 16, 18,
 149                    21, 24, 26, 29, 32, 35, 37, 40};
 150
 151 static driver_t firewire_driver = {
 152         "firewire",
 153         firewire_methods,
 154         sizeof(struct firewire_softc),
 155 };
 156
 157 /*
 158  * Lookup fwdev by node id.
 159  */
 160 struct fw_device *
 161 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
 162 {
 163         struct fw_device *fwdev;
 164         int s;
 165
 166         s = splfw();
 167         STAILQ_FOREACH(fwdev, &fc->devices, link)
 168                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 169                         break;
 170         splx(s);
 171
 172         return fwdev;
 173 }
 174
 175 /*
 176  * Lookup fwdev by EUI64.
 177  */
 178 struct fw_device *
 179 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
 180 {
 181         struct fw_device *fwdev;
 182         int s;
 183
 184         s = splfw();
 185         FW_GLOCK(fc);
 186         STAILQ_FOREACH(fwdev, &fc->devices, link)
 187                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 188                         break;
 189         FW_GUNLOCK(fc);
 190         splx(s);
 191
 192         if(fwdev == NULL) return NULL;
 193         if(fwdev->status == FWDEVINVAL) return NULL;
 194         return fwdev;
 195 }
 196
 197 /*
 198  * Async. request procedure for userland application.
 199  */
 200 int
 201 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
 202 {
 203         int err = 0;
 204         struct fw_xferq *xferq;
 205         int len;
 206         struct fw_pkt *fp;
 207         int tcode;
 208         struct tcode_info *info;
 209
 210         if(xfer == NULL) return EINVAL;
 211         if(xfer->hand == NULL){
 212                 printf("hand == NULL\n");
 213                 return EINVAL;
 214         }
 215         fp = &xfer->send.hdr;
 216
 217         tcode = fp->mode.common.tcode & 0xf;
 218         info = &fc->tcode[tcode];
 219         if (info->flag == 0) {
 220                 printf("invalid tcode=%x\n", tcode);
 221                 return EINVAL;
 222         }
 223
 224         /* XXX allow bus explore packets only after bus rest */
 225         if ((fc->status < FWBUSEXPLORE) &&
 226             ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
 227             (fp->mode.rreqq.dest_lo  < 0xf0000000) ||
 228             (fp->mode.rreqq.dest_lo >= 0xf0001000))) {
 229                 xfer->resp = EAGAIN;
 230                 xfer->flag = FWXF_BUSY;
 231                 return (EAGAIN);
 232         }
 233
 234         if (info->flag & FWTI_REQ)
 235                 xferq = fc->atq;
 236         else
 237                 xferq = fc->ats;
 238         len = info->hdr_len;
 239         if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
 240                 printf("send.pay_len > maxrec\n");
 241                 return EINVAL;
 242         }
 243         if (info->flag & FWTI_BLOCK_STR)
 244                 len = fp->mode.stream.len;
 245         else if (info->flag & FWTI_BLOCK_ASY)
 246                 len = fp->mode.rresb.len;
 247         else
 248                 len = 0;
 249         if (len != xfer->send.pay_len){
 250                 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
 251                     len, xfer->send.pay_len, tcode_str[tcode], tcode);
 252                 return EINVAL;
 253         }
 254
 255         if(xferq->start == NULL){
 256                 printf("xferq->start == NULL\n");
 257                 return EINVAL;
 258         }
 259         if(!(xferq->queued < xferq->maxq)){
 260                 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
 261                         xferq->queued);
 262                 return EAGAIN;
 263         }
 264
 265         xfer->tl = -1;
 266         if (info->flag & FWTI_TLABEL) {
 267                 if (fw_get_tlabel(fc, xfer) < 0)
 268                         return EAGAIN;
 269         }
 270
 271         xfer->resp = 0;
 272         xfer->fc = fc;
 273         xfer->q = xferq;
 274
 275         fw_asystart(xfer);
 276         return err;
 277 }
 278 /*
 279  * Wakeup blocked process.
 280  */
 281 void
 282 fw_xferwake(struct fw_xfer *xfer)
 283 {
 284         struct mtx *lock = &xfer->fc->wait_lock;
 285
 286         mtx_lock(lock);
 287         xfer->flag |= FWXF_WAKE;
 288         mtx_unlock(lock);
 289
 290         wakeup(xfer);
 291         return;
 292 }
 293
 294 int
 295 fw_xferwait(struct fw_xfer *xfer)
 296 {
 297         struct mtx *lock = &xfer->fc->wait_lock;
 298         int err = 0;
 299
 300         mtx_lock(lock);
 301         if ((xfer->flag & FWXF_WAKE) == 0)
 302                 err = msleep((void *)xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0);
 303         mtx_unlock(lock);
 304
 305         return (err);
 306 }
 307
 308 /*
 309  * Async. request with given xfer structure.
 310  */
 311 static void
 312 fw_asystart(struct fw_xfer *xfer)
 313 {
 314         struct firewire_comm *fc = xfer->fc;
 315         int s;
 316         s = splfw();
 317         /* Protect from interrupt/timeout */
 318         FW_GLOCK(fc);
 319         xfer->flag = FWXF_INQ;
 320         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 321 #if 0
 322         xfer->q->queued ++;
 323 #endif
 324         FW_GUNLOCK(fc);
 325         splx(s);
 326         /* XXX just queue for mbuf */
 327         if (xfer->mbuf == NULL)
 328                 xfer->q->start(fc);
 329         return;
 330 }
 331
 332 static void
 333 firewire_identify(driver_t *driver, device_t parent)
 334 {
 335         BUS_ADD_CHILD(parent, 0, "firewire", -1);
 336 }
 337
 338 static int
 339 firewire_probe(device_t dev)
 340 {
 341         device_set_desc(dev, "IEEE1394(FireWire) bus");
 342         return (0);
 343 }
 344
 345 static void
 346 firewire_xfer_timeout(void *arg, int pending)
 347 {
 348         struct firewire_comm *fc = (struct firewire_comm *)arg;
 349         struct fw_xfer *xfer, *txfer;
 350         struct timeval tv;
 351         struct timeval split_timeout;
 352         STAILQ_HEAD(, fw_xfer) xfer_timeout;
 353         int i, s;
 354
 355         split_timeout.tv_sec = 0;
 356         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 357
 358         microtime(&tv);
 359         timevalsub(&tv, &split_timeout);
 360         STAILQ_INIT(&xfer_timeout);
 361
 362         s = splfw();
 363         mtx_lock(&fc->tlabel_lock);
 364         for (i = 0; i < 0x40; i ++) {
 365                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 366                         if ((xfer->flag & FWXF_SENT) == 0)
 367                                 /* not sent yet */
 368                                 break;
 369                         if (timevalcmp(&xfer->tv, &tv, >))
 370                                 /* the rests are newer than this */
 371                                 break;
 372                         device_printf(fc->bdev,
 373                                 "split transaction timeout: "
 374                                 "tl=0x%x flag=0x%02x\n", i, xfer->flag);
 375                         fw_dump_hdr(&xfer->send.hdr, "send");
 376                         xfer->resp = ETIMEDOUT;
 377                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 378                         STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
 379                 }
 380         }
 381         mtx_unlock(&fc->tlabel_lock);
 382         splx(s);
 383         fc->timeout(fc);
 384
 385         STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer)
 386                 xfer->hand(xfer);
 387 }
 388
 389 #define WATCHDOG_HZ 10
 390 static void
 391 firewire_watchdog(void *arg)
 392 {
 393         struct firewire_comm *fc;
 394         static int watchdog_clock = 0;
 395
 396         fc = (struct firewire_comm *)arg;
 397
 398         /*
 399          * At boot stage, the device interrupt is disabled and
 400          * We encounter a timeout easily. To avoid this,
 401          * ignore clock interrupt for a while.
 402          */
 403         if (watchdog_clock > WATCHDOG_HZ * 15)
 404                 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout);
 405         else
 406                 watchdog_clock ++;
 407
 408         callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ,
 409                         (void *)firewire_watchdog, (void *)fc);
 410 }
 411
 412 /*
 413  * The attach routine.
 414  */
 415 static int
 416 firewire_attach(device_t dev)
 417 {
 418         int unit;
 419         struct firewire_softc *sc = device_get_softc(dev);
 420         device_t pa = device_get_parent(dev);
 421         struct firewire_comm *fc;
 422
 423         fc = (struct firewire_comm *)device_get_softc(pa);
 424         sc->fc = fc;
 425         fc->status = FWBUSNOTREADY;
 426
 427         unit = device_get_unit(dev);
 428         if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
 429
 430         fwdev_makedev(sc);
 431
 432         mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF);
 433         mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF);
 434         CALLOUT_INIT(&fc->timeout_callout);
 435         CALLOUT_INIT(&fc->bmr_callout);
 436         CALLOUT_INIT(&fc->busprobe_callout);
 437         TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, (void *)fc);
 438
 439         callout_reset(&sc->fc->timeout_callout, hz,
 440                         (void *)firewire_watchdog, (void *)sc->fc);
 441
 442         /* create thread */
 443         kthread_create(fw_bus_probe_thread, (void *)fc, &fc->probe_thread,
 444                 0, 0, "fw%d_probe", unit);
 445
 446         /* Locate our children */
 447         bus_generic_probe(dev);
 448
 449         /* launch attachement of the added children */
 450         bus_generic_attach(dev);
 451
 452         /* bus_reset */
 453         fw_busreset(fc, FWBUSNOTREADY);
 454         fc->ibr(fc);
 455
 456         return 0;
 457 }
 458
 459 /*
 460  * Attach it as child.
 461  */
 462 static device_t
 463 firewire_add_child(device_t dev, int order, const char *name, int unit)
 464 {
 465         device_t child;
 466         struct firewire_softc *sc;
 467
 468         sc = (struct firewire_softc *)device_get_softc(dev);
 469         child = device_add_child(dev, name, unit);
 470         if (child) {
 471                 device_set_ivars(child, sc->fc);
 472                 device_probe_and_attach(child);
 473         }
 474
 475         return child;
 476 }
 477
 478 static int
 479 firewire_resume(device_t dev)
 480 {
 481         struct firewire_softc *sc;
 482
 483         sc = (struct firewire_softc *)device_get_softc(dev);
 484         sc->fc->status = FWBUSNOTREADY;
 485
 486         bus_generic_resume(dev);
 487
 488         return(0);
 489 }
 490
 491 /*
 492  * Dettach it.
 493  */
 494 static int
 495 firewire_detach(device_t dev)
 496 {
 497         struct firewire_softc *sc;
 498         struct firewire_comm *fc;
 499         struct fw_device *fwdev, *fwdev_next;
 500         int err;
 501
 502         sc = (struct firewire_softc *)device_get_softc(dev);
 503         fc = sc->fc;
 504         mtx_lock(&fc->wait_lock);
 505         fc->status = FWBUSDETACH;
 506         wakeup(fc);
 507         if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60))
 508                 printf("firewire probe thread didn't die\n");
 509         mtx_unlock(&fc->wait_lock);
 510
 511         if ((err = fwdev_destroydev(sc)) != 0)
 512                 return err;
 513
 514         if ((err = bus_generic_detach(dev)) != 0)
 515                 return err;
 516
 517         callout_stop(&fc->timeout_callout);
 518         callout_stop(&fc->bmr_callout);
 519         callout_stop(&fc->busprobe_callout);
 520
 521         /* XXX xfree_free and untimeout on all xfers */
 522         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
 523                                                         fwdev = fwdev_next) {
 524                 fwdev_next = STAILQ_NEXT(fwdev, link);
 525                 free(fwdev, M_FW);
 526         }
 527         free(fc->topology_map, M_FW);
 528         free(fc->speed_map, M_FW);
 529         free(fc->crom_src_buf, M_FW);
 530
 531         mtx_destroy(&fc->tlabel_lock);
 532         mtx_destroy(&fc->wait_lock);
 533         return(0);
 534 }
 535 #if 0
 536 static int
 537 firewire_shutdown( device_t dev )
 538 {
 539         return 0;
 540 }
 541 #endif
 542
 543
 544 static void
 545 fw_xferq_drain(struct fw_xferq *xferq)
 546 {
 547         struct fw_xfer *xfer;
 548
 549         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 550                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 551 #if 0
 552                 xferq->queued --;
 553 #endif
 554                 xfer->resp = EAGAIN;
 555                 xfer->flag = FWXF_SENTERR;
 556                 fw_xfer_done(xfer);
 557         }
 558 }
 559
 560 void
 561 fw_drain_txq(struct firewire_comm *fc)
 562 {
 563         struct fw_xfer *xfer, *txfer;
 564         STAILQ_HEAD(, fw_xfer) xfer_drain;
 565         int i;
 566
 567         STAILQ_INIT(&xfer_drain);
 568
 569         FW_GLOCK(fc);
 570         fw_xferq_drain(fc->atq);
 571         fw_xferq_drain(fc->ats);
 572         for(i = 0; i < fc->nisodma; i++)
 573                 fw_xferq_drain(fc->it[i]);
 574         FW_GUNLOCK(fc);
 575
 576         mtx_lock(&fc->tlabel_lock);
 577         for (i = 0; i < 0x40; i ++)
 578                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 579                         if (firewire_debug)
 580                                 printf("tl=%d flag=%d\n", i, xfer->flag);
 581                         xfer->resp = EAGAIN;
 582                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 583                         STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
 584                 }
 585         mtx_unlock(&fc->tlabel_lock);
 586
 587         STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer)
 588                 xfer->hand(xfer);
 589 }
 590
 591 static void
 592 fw_reset_csr(struct firewire_comm *fc)
 593 {
 594         int i;
 595
 596         CSRARC(fc, STATE_CLEAR)
 597                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 598         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 599         CSRARC(fc, NODE_IDS) = 0x3f;
 600
 601         CSRARC(fc, TOPO_MAP + 8) = 0;
 602         fc->irm = -1;
 603
 604         fc->max_node = -1;
 605
 606         for(i = 2; i < 0x100/4 - 2 ; i++){
 607                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 608         }
 609         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 610         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 611         CSRARC(fc, RESET_START) = 0;
 612         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 613         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 614         CSRARC(fc, CYCLE_TIME) = 0x0;
 615         CSRARC(fc, BUS_TIME) = 0x0;
 616         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 617         CSRARC(fc, BANDWIDTH_AV) = 4915;
 618         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 619         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 620         CSRARC(fc, IP_CHANNELS) = (1 << 31);
 621
 622         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 623         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 624         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 625                                 1 << 28 | 0xff << 16 | 0x09 << 8;
 626         CSRARC(fc, CONF_ROM + 0xc) = 0;
 627
 628 /* DV depend CSRs see blue book */
 629         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 630         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 631
 632         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
 633         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 634 }
 635
 636 static void
 637 fw_init_crom(struct firewire_comm *fc)
 638 {
 639         struct crom_src *src;
 640
 641         fc->crom_src_buf = (struct crom_src_buf *)
 642                 malloc(sizeof(struct crom_src_buf), M_FW, M_WAITOK | M_ZERO);
 643         if (fc->crom_src_buf == NULL)
 644                 return;
 645
 646         src = &fc->crom_src_buf->src;
 647         bzero(src, sizeof(struct crom_src));
 648
 649         /* BUS info sample */
 650         src->hdr.info_len = 4;
 651
 652         src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 653
 654         src->businfo.irmc = 1;
 655         src->businfo.cmc = 1;
 656         src->businfo.isc = 1;
 657         src->businfo.bmc = 1;
 658         src->businfo.pmc = 0;
 659         src->businfo.cyc_clk_acc = 100;
 660         src->businfo.max_rec = fc->maxrec;
 661         src->businfo.max_rom = MAXROM_4;
 662         src->businfo.generation = 1;
 663         src->businfo.link_spd = fc->speed;
 664
 665         src->businfo.eui64.hi = fc->eui.hi;
 666         src->businfo.eui64.lo = fc->eui.lo;
 667
 668         STAILQ_INIT(&src->chunk_list);
 669
 670         fc->crom_src = src;
 671         fc->crom_root = &fc->crom_src_buf->root;
 672 }
 673
 674 static void
 675 fw_reset_crom(struct firewire_comm *fc)
 676 {
 677         struct crom_src_buf *buf;
 678         struct crom_src *src;
 679         struct crom_chunk *root;
 680
 681         if (fc->crom_src_buf == NULL)
 682                 fw_init_crom(fc);
 683
 684         buf =  fc->crom_src_buf;
 685         src = fc->crom_src;
 686         root = fc->crom_root;
 687
 688         STAILQ_INIT(&src->chunk_list);
 689
 690         bzero(root, sizeof(struct crom_chunk));
 691         crom_add_chunk(src, NULL, root, 0);
 692         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 693         /* private company_id */
 694         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 695 #ifdef __DragonFly__
 696         crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
 697         crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
 698 #else
 699         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 700         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 701 #endif
 702         crom_add_simple_text(src, root, &buf->hw, hostname);
 703 }
 704
 705 /*
 706  * Called after bus reset.
 707  */
 708 void
 709 fw_busreset(struct firewire_comm *fc, uint32_t new_status)
 710 {
 711         struct firewire_dev_comm *fdc;
 712         struct crom_src *src;
 713         device_t *devlistp;
 714         void *newrom;
 715         int i, devcnt;
 716
 717         switch(fc->status){
 718         case FWBUSMGRELECT:
 719                 callout_stop(&fc->bmr_callout);
 720                 break;
 721         default:
 722                 break;
 723         }
 724         fc->status = new_status;
 725         fw_reset_csr(fc);
 726         fw_reset_crom(fc);
 727
 728         if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
 729                 for( i = 0 ; i < devcnt ; i++)
 730                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
 731                                 fdc = device_get_softc(devlistp[i]);
 732                                 if (fdc->post_busreset != NULL)
 733                                         fdc->post_busreset(fdc);
 734                         }
 735                 free(devlistp, M_TEMP);
 736         }
 737
 738         newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
 739         src = &fc->crom_src_buf->src;
 740         crom_load(src, (uint32_t *)newrom, CROMSIZE);
 741         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 742                 /* bump generation and reload */
 743                 src->businfo.generation ++;
 744                 /* generation must be between 0x2 and 0xF */
 745                 if (src->businfo.generation < 2)
 746                         src->businfo.generation ++;
 747                 crom_load(src, (uint32_t *)newrom, CROMSIZE);
 748                 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
 749         }
 750         free(newrom, M_FW);
 751 }
 752
 753 /* Call once after reboot */
 754 void fw_init(struct firewire_comm *fc)
 755 {
 756         int i;
 757 #ifdef FW_VMACCESS
 758         struct fw_xfer *xfer;
 759         struct fw_bind *fwb;
 760 #endif
 761
 762         fc->arq->queued = 0;
 763         fc->ars->queued = 0;
 764         fc->atq->queued = 0;
 765         fc->ats->queued = 0;
 766
 767         fc->arq->buf = NULL;
 768         fc->ars->buf = NULL;
 769         fc->atq->buf = NULL;
 770         fc->ats->buf = NULL;
 771
 772         fc->arq->flag = 0;
 773         fc->ars->flag = 0;
 774         fc->atq->flag = 0;
 775         fc->ats->flag = 0;
 776
 777         STAILQ_INIT(&fc->atq->q);
 778         STAILQ_INIT(&fc->ats->q);
 779
 780         for( i = 0 ; i < fc->nisodma ; i ++ ){
 781                 fc->it[i]->queued = 0;
 782                 fc->ir[i]->queued = 0;
 783
 784                 fc->it[i]->start = NULL;
 785                 fc->ir[i]->start = NULL;
 786
 787                 fc->it[i]->buf = NULL;
 788                 fc->ir[i]->buf = NULL;
 789
 790                 fc->it[i]->flag = FWXFERQ_STREAM;
 791                 fc->ir[i]->flag = FWXFERQ_STREAM;
 792
 793                 STAILQ_INIT(&fc->it[i]->q);
 794                 STAILQ_INIT(&fc->ir[i]->q);
 795         }
 796
 797         fc->arq->maxq = FWMAXQUEUE;
 798         fc->ars->maxq = FWMAXQUEUE;
 799         fc->atq->maxq = FWMAXQUEUE;
 800         fc->ats->maxq = FWMAXQUEUE;
 801
 802         for( i = 0 ; i < fc->nisodma ; i++){
 803                 fc->ir[i]->maxq = FWMAXQUEUE;
 804                 fc->it[i]->maxq = FWMAXQUEUE;
 805         }
 806 /* Initialize csr registers */
 807         fc->topology_map = (struct fw_topology_map *)malloc(
 808                                 sizeof(struct fw_topology_map),
 809                                 M_FW, M_NOWAIT | M_ZERO);
 810         fc->speed_map = (struct fw_speed_map *)malloc(
 811                                 sizeof(struct fw_speed_map),
 812                                 M_FW, M_NOWAIT | M_ZERO);
 813         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 814         CSRARC(fc, TOPO_MAP + 4) = 1;
 815         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 816         CSRARC(fc, SPED_MAP + 4) = 1;
 817
 818         STAILQ_INIT(&fc->devices);
 819
 820 /* Initialize Async handlers */
 821         STAILQ_INIT(&fc->binds);
 822         for( i = 0 ; i < 0x40 ; i++){
 823                 STAILQ_INIT(&fc->tlabels[i]);
 824         }
 825
 826 /* DV depend CSRs see blue book */
 827 #if 0
 828         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 829         CSRARC(fc, oPCR) = 0x8000007a;
 830         for(i = 4 ; i < 0x7c/4 ; i+=4){
 831                 CSRARC(fc, i + oPCR) = 0x8000007a;
 832         }
 833
 834         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 835         CSRARC(fc, iPCR) = 0x803f0000;
 836         for(i = 4 ; i < 0x7c/4 ; i+=4){
 837                 CSRARC(fc, i + iPCR) = 0x0;
 838         }
 839 #endif
 840
 841         fc->crom_src_buf = NULL;
 842
 843 #ifdef FW_VMACCESS
 844         xfer = fw_xfer_alloc();
 845         if(xfer == NULL) return;
 846
 847         fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT);
 848         if(fwb == NULL){
 849                 fw_xfer_free(xfer);
 850                 return;
 851         }
 852         xfer->hand = fw_vmaccess;
 853         xfer->fc = fc;
 854         xfer->sc = NULL;
 855
 856         fwb->start_hi = 0x2;
 857         fwb->start_lo = 0;
 858         fwb->addrlen = 0xffffffff;
 859         fwb->xfer = xfer;
 860         fw_bindadd(fc, fwb);
 861 #endif
 862 }
 863
 864 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
 865     ((fwb)->end < (addr))?1:0)
 866
 867 /*
 868  * To lookup bound process from IEEE1394 address.
 869  */
 870 struct fw_bind *
 871 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
 872 {
 873         u_int64_t addr;
 874         struct fw_bind *tfw, *r = NULL;
 875
 876         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 877         FW_GLOCK(fc);
 878         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 879                 if (BIND_CMP(addr, tfw) == 0) {
 880                         r = tfw;
 881                         break;
 882                 }
 883         FW_GUNLOCK(fc);
 884         return(r);
 885 }
 886
 887 /*
 888  * To bind IEEE1394 address block to process.
 889  */
 890 int
 891 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 892 {
 893         struct fw_bind *tfw, *prev = NULL;
 894         int r = 0;
 895
 896         if (fwb->start > fwb->end) {
 897                 printf("%s: invalid range\n", __func__);
 898                 return EINVAL;
 899         }
 900
 901         FW_GLOCK(fc);
 902         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 903                 if (fwb->end < tfw->start)
 904                         break;
 905                 prev = tfw;
 906         }
 907         if (prev == NULL)
 908                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 909         else if (prev->end < fwb->start)
 910                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 911         else {
 912                 printf("%s: bind failed\n", __func__);
 913                 r = EBUSY;
 914         }
 915         FW_GUNLOCK(fc);
 916         return (r);
 917 }
 918
 919 /*
 920  * To free IEEE1394 address block.
 921  */
 922 int
 923 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 924 {
 925 #if 0
 926         struct fw_xfer *xfer, *next;
 927 #endif
 928         struct fw_bind *tfw;
 929         int s;
 930
 931         s = splfw();
 932         FW_GLOCK(fc);
 933         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 934                 if (tfw == fwb) {
 935                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 936                         goto found;
 937                 }
 938
 939         printf("%s: no such binding\n", __func__);
 940         FW_GUNLOCK(fc);
 941         splx(s);
 942         return (1);
 943 found:
 944 #if 0
 945         /* shall we do this? */
 946         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 947                 next = STAILQ_NEXT(xfer, link);
 948                 fw_xfer_free(xfer);
 949         }
 950         STAILQ_INIT(&fwb->xferlist);
 951 #endif
 952         FW_GUNLOCK(fc);
 953
 954         splx(s);
 955         return 0;
 956 }
 957
 958 int
 959 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
 960     int slen, int rlen, int n,
 961     struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
 962 {
 963         int i, s;
 964         struct fw_xfer *xfer;
 965
 966         for (i = 0; i < n; i++) {
 967                 xfer = fw_xfer_alloc_buf(type, slen, rlen);
 968                 if (xfer == NULL)
 969                         return (n);
 970                 xfer->fc = fc;
 971                 xfer->sc = sc;
 972                 xfer->hand = hand;
 973                 s = splfw();
 974                 STAILQ_INSERT_TAIL(q, xfer, link);
 975                 splx(s);
 976         }
 977         return (n);
 978 }
 979
 980 void
 981 fw_xferlist_remove(struct fw_xferlist *q)
 982 {
 983         struct fw_xfer *xfer, *next;
 984
 985         for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
 986                 next = STAILQ_NEXT(xfer, link);
 987                 fw_xfer_free_buf(xfer);
 988         }
 989         STAILQ_INIT(q);
 990 }
 991 /*
 992  * dump packet header
 993  */
 994 static void
 995 fw_dump_hdr(struct fw_pkt *fp, char *prefix)
 996 {
 997         printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
 998             "src=0x%03x\n", prefix,
 999             fp->mode.hdr.dst & 0x3f,
1000             fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
1001             fp->mode.hdr.tcode, fp->mode.hdr.pri,
1002             fp->mode.hdr.src);
1003 }
1004
1005 /*
1006  * To free transaction label.
1007  */
1008 static void
1009 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
1010 {
1011         struct fw_xfer *txfer;
1012         int s;
1013
1014         if (xfer->tl < 0)
1015                 return;
1016
1017         s = splfw();
1018         mtx_lock(&fc->tlabel_lock);
1019 #if 1   /* make sure the label is allocated */
1020         STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
1021                 if(txfer == xfer)
1022                         break;
1023         if (txfer == NULL) {
1024                 printf("%s: the xfer is not in the queue "
1025                     "(tlabel=%d, flag=0x%x)\n",
1026                     __FUNCTION__, xfer->tl, xfer->flag);
1027                 fw_dump_hdr(&xfer->send.hdr, "send");
1028                 fw_dump_hdr(&xfer->recv.hdr, "recv");
1029                 kdb_backtrace();
1030                 mtx_unlock(&fc->tlabel_lock);
1031                 splx(s);
1032                 return;
1033         }
1034 #endif
1035
1036         STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
1037         mtx_unlock(&fc->tlabel_lock);
1038         splx(s);
1039         return;
1040 }
1041
1042 /*
1043  * To obtain XFER structure by transaction label.
1044  */
1045 static struct fw_xfer *
1046 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
1047 {
1048         struct fw_xfer *xfer;
1049         int s = splfw();
1050         int req;
1051
1052         mtx_lock(&fc->tlabel_lock);
1053         STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
1054                 if(xfer->send.hdr.mode.hdr.dst == node) {
1055                         mtx_unlock(&fc->tlabel_lock);
1056                         splx(s);
1057                         KASSERT(xfer->tl == tlabel,
1058                                 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel));
1059                         /* extra sanity check */
1060                         req = xfer->send.hdr.mode.hdr.tcode;
1061                         if (xfer->fc->tcode[req].valid_res != tcode) {
1062                                 printf("%s: invalid response tcode "
1063                                     "(0x%x for 0x%x)\n", __FUNCTION__,
1064                                     tcode, req);
1065                                 return(NULL);
1066                         }
1067
1068                         if (firewire_debug > 2)
1069                                 printf("fw_tl2xfer: found tl=%d\n", tlabel);
1070                         return(xfer);
1071                 }
1072         mtx_unlock(&fc->tlabel_lock);
1073         if (firewire_debug > 1)
1074                 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
1075         splx(s);
1076         return(NULL);
1077 }
1078
1079 /*
1080  * To allocate IEEE1394 XFER structure.
1081  */
1082 struct fw_xfer *
1083 fw_xfer_alloc(struct malloc_type *type)
1084 {
1085         struct fw_xfer *xfer;
1086
1087         xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
1088         if (xfer == NULL)
1089                 return xfer;
1090
1091         xfer->malloc = type;
1092
1093         return xfer;
1094 }
1095
1096 struct fw_xfer *
1097 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
1098 {
1099         struct fw_xfer *xfer;
1100
1101         xfer = fw_xfer_alloc(type);
1102         if (xfer == NULL)
1103                 return(NULL);
1104         xfer->send.pay_len = send_len;
1105         xfer->recv.pay_len = recv_len;
1106         if (send_len > 0) {
1107                 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
1108                 if (xfer->send.payload == NULL) {
1109                         fw_xfer_free(xfer);
1110                         return(NULL);
1111                 }
1112         }
1113         if (recv_len > 0) {
1114                 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1115                 if (xfer->recv.payload == NULL) {
1116                         if (xfer->send.payload != NULL)
1117                                 free(xfer->send.payload, type);
1118                         fw_xfer_free(xfer);
1119                         return(NULL);
1120                 }
1121         }
1122         return(xfer);
1123 }
1124
1125 /*
1126  * IEEE1394 XFER post process.
1127  */
1128 void
1129 fw_xfer_done(struct fw_xfer *xfer)
1130 {
1131         if (xfer->hand == NULL) {
1132                 printf("hand == NULL\n");
1133                 return;
1134         }
1135
1136         if (xfer->fc == NULL)
1137                 panic("fw_xfer_done: why xfer->fc is NULL?");
1138
1139         fw_tl_free(xfer->fc, xfer);
1140         xfer->hand(xfer);
1141 }
1142
1143 void
1144 fw_xfer_unload(struct fw_xfer* xfer)
1145 {
1146         int s;
1147
1148         if(xfer == NULL ) return;
1149         if(xfer->flag & FWXF_INQ){
1150                 printf("fw_xfer_free FWXF_INQ\n");
1151                 s = splfw();
1152                 FW_GLOCK(xfer->fc);
1153                 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1154 #if 0
1155                 xfer->q->queued --;
1156 #endif
1157                 FW_GUNLOCK(xfer->fc);
1158                 splx(s);
1159         }
1160         if (xfer->fc != NULL) {
1161 #if 1
1162                 if(xfer->flag & FWXF_START)
1163                         /*
1164                          * This could happen if:
1165                          *  1. We call fwohci_arcv() before fwohci_txd().
1166                          *  2. firewire_watch() is called.
1167                          */
1168                         printf("fw_xfer_free FWXF_START\n");
1169 #endif
1170         }
1171         xfer->flag = FWXF_INIT;
1172         xfer->resp = 0;
1173 }
1174 /*
1175  * To free IEEE1394 XFER structure.
1176  */
1177 void
1178 fw_xfer_free_buf( struct fw_xfer* xfer)
1179 {
1180         if (xfer == NULL) {
1181                 printf("%s: xfer == NULL\n", __func__);
1182                 return;
1183         }
1184         fw_xfer_unload(xfer);
1185         if(xfer->send.payload != NULL){
1186                 free(xfer->send.payload, xfer->malloc);
1187         }
1188         if(xfer->recv.payload != NULL){
1189                 free(xfer->recv.payload, xfer->malloc);
1190         }
1191         free(xfer, xfer->malloc);
1192 }
1193
1194 void
1195 fw_xfer_free( struct fw_xfer* xfer)
1196 {
1197         if (xfer == NULL) {
1198                 printf("%s: xfer == NULL\n", __func__);
1199                 return;
1200         }
1201         fw_xfer_unload(xfer);
1202         free(xfer, xfer->malloc);
1203 }
1204
1205 void
1206 fw_asy_callback_free(struct fw_xfer *xfer)
1207 {
1208 #if 0
1209         printf("asyreq done flag=0x%02x resp=%d\n",
1210                                 xfer->flag, xfer->resp);
1211 #endif
1212         fw_xfer_free(xfer);
1213 }
1214
1215 /*
1216  * To configure PHY.
1217  */
1218 static void
1219 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1220 {
1221         struct fw_xfer *xfer;
1222         struct fw_pkt *fp;
1223
1224         fc->status = FWBUSPHYCONF;
1225
1226         xfer = fw_xfer_alloc(M_FWXFER);
1227         if (xfer == NULL)
1228                 return;
1229         xfer->fc = fc;
1230         xfer->hand = fw_asy_callback_free;
1231
1232         fp = &xfer->send.hdr;
1233         fp->mode.ld[1] = 0;
1234         if (root_node >= 0)
1235                 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1236         if (gap_count >= 0)
1237                 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1238         fp->mode.ld[2] = ~fp->mode.ld[1];
1239 /* XXX Dangerous, how to pass PHY packet to device driver */
1240         fp->mode.common.tcode |= FWTCODE_PHY;
1241
1242         if (firewire_debug)
1243                 printf("send phy_config root_node=%d gap_count=%d\n",
1244                                                 root_node, gap_count);
1245         fw_asyreq(fc, -1, xfer);
1246 }
1247
1248 #if 0
1249 /*
1250  * Dump self ID.
1251  */
1252 static void
1253 fw_print_sid(uint32_t sid)
1254 {
1255         union fw_self_id *s;
1256         s = (union fw_self_id *) &sid;
1257         printf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d"
1258                 " p0:%d p1:%d p2:%d i:%d m:%d\n",
1259                 s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1260                 s->p0.phy_speed, s->p0.phy_delay, s->p0.contender,
1261                 s->p0.power_class, s->p0.port0, s->p0.port1,
1262                 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1263 }
1264 #endif
1265
1266 /*
1267  * To receive self ID.
1268  */
1269 void fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len)
1270 {
1271         uint32_t *p;
1272         union fw_self_id *self_id;
1273         u_int i, j, node, c_port = 0, i_branch = 0;
1274
1275         fc->sid_cnt = len /(sizeof(uint32_t) * 2);
1276         fc->max_node = fc->nodeid & 0x3f;
1277         CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
1278         fc->status = FWBUSCYMELECT;
1279         fc->topology_map->crc_len = 2;
1280         fc->topology_map->generation ++;
1281         fc->topology_map->self_id_count = 0;
1282         fc->topology_map->node_count = 0;
1283         fc->speed_map->generation ++;
1284         fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1285         self_id = &fc->topology_map->self_id[0];
1286         for(i = 0; i < fc->sid_cnt; i ++){
1287                 if (sid[1] != ~sid[0]) {
1288                         printf("fw_sidrcv: invalid self-id packet\n");
1289                         sid += 2;
1290                         continue;
1291                 }
1292                 *self_id = *((union fw_self_id *)sid);
1293                 fc->topology_map->crc_len++;
1294                 if(self_id->p0.sequel == 0){
1295                         fc->topology_map->node_count ++;
1296                         c_port = 0;
1297 #if 0
1298                         fw_print_sid(sid[0]);
1299 #endif
1300                         node = self_id->p0.phy_id;
1301                         if(fc->max_node < node){
1302                                 fc->max_node = self_id->p0.phy_id;
1303                         }
1304                         /* XXX I'm not sure this is the right speed_map */
1305                         fc->speed_map->speed[node][node]
1306                                         = self_id->p0.phy_speed;
1307                         for (j = 0; j < node; j ++) {
1308                                 fc->speed_map->speed[j][node]
1309                                         = fc->speed_map->speed[node][j]
1310                                         = min(fc->speed_map->speed[j][j],
1311                                                         self_id->p0.phy_speed);
1312                         }
1313                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1314                           (self_id->p0.link_active && self_id->p0.contender)) {
1315                                 fc->irm = self_id->p0.phy_id;
1316                         }
1317                         if(self_id->p0.port0 >= 0x2){
1318                                 c_port++;
1319                         }
1320                         if(self_id->p0.port1 >= 0x2){
1321                                 c_port++;
1322                         }
1323                         if(self_id->p0.port2 >= 0x2){
1324                                 c_port++;
1325                         }
1326                 }
1327                 if(c_port > 2){
1328                         i_branch += (c_port - 2);
1329                 }
1330                 sid += 2;
1331                 self_id++;
1332                 fc->topology_map->self_id_count ++;
1333         }
1334         device_printf(fc->bdev, "%d nodes", fc->max_node + 1);
1335         /* CRC */
1336         fc->topology_map->crc = fw_crc16(
1337                         (uint32_t *)&fc->topology_map->generation,
1338                         fc->topology_map->crc_len * 4);
1339         fc->speed_map->crc = fw_crc16(
1340                         (uint32_t *)&fc->speed_map->generation,
1341                         fc->speed_map->crc_len * 4);
1342         /* byteswap and copy to CSR */
1343         p = (uint32_t *)fc->topology_map;
1344         for (i = 0; i <= fc->topology_map->crc_len; i++)
1345                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1346         p = (uint32_t *)fc->speed_map;
1347         CSRARC(fc, SPED_MAP) = htonl(*p++);
1348         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1349         /* don't byte-swap uint8_t array */
1350         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1351
1352         fc->max_hop = fc->max_node - i_branch;
1353         printf(", maxhop <= %d", fc->max_hop);
1354
1355         if(fc->irm == -1 ){
1356                 printf(", Not found IRM capable node");
1357         }else{
1358                 printf(", cable IRM = %d", fc->irm);
1359                 if (fc->irm == fc->nodeid)
1360                         printf(" (me)");
1361         }
1362         printf("\n");
1363
1364         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1365                 if (fc->irm == fc->nodeid) {
1366                         fc->status = FWBUSMGRDONE;
1367                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1368                         fw_bmr(fc);
1369                 } else {
1370                         fc->status = FWBUSMGRELECT;
1371                         callout_reset(&fc->bmr_callout, hz/8,
1372                                 (void *)fw_try_bmr, (void *)fc);
1373                 }
1374         } else
1375                 fc->status = FWBUSMGRDONE;
1376
1377         callout_reset(&fc->busprobe_callout, hz/4,
1378                         (void *)fw_bus_probe, (void *)fc);
1379 }
1380
1381 /*
1382  * To probe devices on the IEEE1394 bus.
1383  */
1384 static void
1385 fw_bus_probe(struct firewire_comm *fc)
1386 {
1387         int s;
1388         struct fw_device *fwdev;
1389
1390         s = splfw();
1391         fc->status = FWBUSEXPLORE;
1392
1393         /* Invalidate all devices, just after bus reset. */
1394         STAILQ_FOREACH(fwdev, &fc->devices, link)
1395                 if (fwdev->status != FWDEVINVAL) {
1396                         fwdev->status = FWDEVINVAL;
1397                         fwdev->rcnt = 0;
1398                 }
1399         splx(s);
1400
1401         wakeup((void *)fc);
1402 }
1403
1404 static int
1405 fw_explore_read_quads(struct fw_device *fwdev, int offset,
1406     uint32_t *quad, int n)
1407 {
1408         struct fw_xfer *xfer;
1409         uint32_t tmp;
1410         int i, error;
1411
1412         for (i = 0; i < n; i ++, offset += sizeof(uint32_t)) {
1413                 xfer = fwmem_read_quad(fwdev, NULL, -1,
1414                     0xffff, 0xf0000000 | offset, (void *)&tmp,
1415                     fw_xferwake);
1416                 if (xfer == NULL)
1417                         return (-1);
1418                 fw_xferwait(xfer);
1419
1420                 if (xfer->resp == 0)
1421                         quad[i] = ntohl(tmp);
1422
1423                 error = xfer->resp;
1424                 fw_xfer_free(xfer);
1425                 if (error)
1426                         return (error);
1427         }
1428         return (0);
1429 }
1430
1431
1432 static int
1433 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1434 {
1435         int err, i, off;
1436         struct csrdirectory *dir;
1437         struct csrreg *reg;
1438
1439         dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1440         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1441             (uint32_t *)dir, 1);
1442         if (err)
1443                 return (-1);
1444
1445         offset += sizeof(uint32_t);
1446         reg = (struct csrreg *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1447         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1448             (uint32_t *)reg, dir->crc_len);
1449         if (err)
1450                 return (-1);
1451
1452         /* XXX check CRC */
1453
1454         off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1455         if (fwdev->rommax < off)
1456                 fwdev->rommax = off;
1457
1458         if (recur == 0)
1459                 return (0);
1460
1461         for (i = 0; i < dir->crc_len; i ++, offset += sizeof(uint32_t)) {
1462                 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
1463                         recur = 1;
1464                 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
1465                         recur = 0;
1466                 else
1467                         continue;
1468
1469                 off = offset + reg[i].val * sizeof(uint32_t);
1470                 if (off > CROMSIZE) {
1471                         printf("%s: invalid offset %d\n", __FUNCTION__, off);
1472                         return(-1);
1473                 }
1474                 err = fw_explore_csrblock(fwdev, off, recur);
1475                 if (err)
1476                         return (-1);
1477         }
1478         return (0);
1479 }
1480
1481 static int
1482 fw_explore_node(struct fw_device *dfwdev)
1483 {
1484         struct firewire_comm *fc;
1485         struct fw_device *fwdev, *pfwdev, *tfwdev;
1486         uint32_t *csr;
1487         struct csrhdr *hdr;
1488         struct bus_info *binfo;
1489         int err, node, spd;
1490
1491         fc = dfwdev->fc;
1492         csr = dfwdev->csrrom;
1493         node = dfwdev->dst;
1494
1495         /* First quad */
1496         err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
1497         if (err)
1498                 return (-1);
1499         hdr = (struct csrhdr *)&csr[0];
1500         if (hdr->info_len != 4) {
1501                 if (firewire_debug)
1502                         printf("node%d: wrong bus info len(%d)\n",
1503                             node, hdr->info_len);
1504                 return (-1);
1505         }
1506
1507         /* bus info */
1508         err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1509         if (err)
1510                 return (-1);
1511         binfo = (struct bus_info *)&csr[1];
1512         if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1513                 if (firewire_debug)
1514                         printf("node%d: invalid bus name 0x%08x\n",
1515                             node, binfo->bus_name);
1516                 return (-1);
1517         }
1518         spd = fc->speed_map->speed[fc->nodeid][node];
1519         STAILQ_FOREACH(fwdev, &fc->devices, link)
1520                 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1521                         break;
1522         if (fwdev == NULL) {
1523                 /* new device */
1524                 fwdev = malloc(sizeof(struct fw_device), M_FW,
1525                                                 M_NOWAIT | M_ZERO);
1526                 if (fwdev == NULL) {
1527                         if (firewire_debug)
1528                                 printf("node%d: no memory\n", node);
1529                         return (-1);
1530                 }
1531                 fwdev->fc = fc;
1532                 fwdev->eui = binfo->eui64;
1533                 /* inesrt into sorted fwdev list */
1534                 pfwdev = NULL;
1535                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1536                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1537                                 (tfwdev->eui.hi == fwdev->eui.hi &&
1538                                 tfwdev->eui.lo > fwdev->eui.lo))
1539                                 break;
1540                         pfwdev = tfwdev;
1541                 }
1542                 if (pfwdev == NULL)
1543                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1544                 else
1545                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1546
1547                 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1548                     linkspeed[spd],
1549                     fwdev->eui.hi, fwdev->eui.lo);
1550         }
1551         fwdev->dst = node;
1552         fwdev->status = FWDEVINIT;
1553         fwdev->speed = spd;
1554
1555         /* unchanged ? */
1556         if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) {
1557                 if (firewire_debug)
1558                         printf("node%d: crom unchanged\n", node);
1559                 return (0);
1560         }
1561
1562         bzero(&fwdev->csrrom[0], CROMSIZE);
1563
1564         /* copy first quad and bus info block */
1565         bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5);
1566         fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1567
1568         err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1569
1570         if (err) {
1571                 fwdev->status = FWDEVINVAL;
1572                 fwdev->csrrom[0] = 0;
1573         }
1574         return (err);
1575
1576 }
1577
1578 /*
1579  * Find the self_id packet for a node, ignoring sequels.
1580  */
1581 static union fw_self_id *
1582 fw_find_self_id(struct firewire_comm *fc, int node)
1583 {
1584         uint32_t i;
1585         union fw_self_id *s;
1586
1587         for (i = 0; i < fc->topology_map->self_id_count; i++) {
1588                 s = &fc->topology_map->self_id[i];
1589                 if (s->p0.sequel)
1590                         continue;
1591                 if (s->p0.phy_id == node)
1592                         return s;
1593         }
1594         return 0;
1595 }
1596
1597 static void
1598 fw_explore(struct firewire_comm *fc)
1599 {
1600         int node, err, s, i, todo, todo2, trys;
1601         char nodes[63];
1602         struct fw_device dfwdev;
1603         union fw_self_id *fwsid;
1604
1605         todo = 0;
1606         /* setup dummy fwdev */
1607         dfwdev.fc = fc;
1608         dfwdev.speed = 0;
1609         dfwdev.maxrec = 8; /* 512 */
1610         dfwdev.status = FWDEVINIT;
1611
1612         for (node = 0; node <= fc->max_node; node ++) {
1613                 /* We don't probe myself and linkdown nodes */
1614                 if (node == fc->nodeid)
1615                         continue;
1616                 fwsid = fw_find_self_id(fc, node);
1617                 if (!fwsid || !fwsid->p0.link_active) {
1618                         if (firewire_debug)
1619                                 printf("node%d: link down\n", node);
1620                         continue;
1621                 }
1622                 nodes[todo++] = node;
1623         }
1624
1625         s = splfw();
1626         for (trys = 0; todo > 0 && trys < 3; trys ++) {
1627                 todo2 = 0;
1628                 for (i = 0; i < todo; i ++) {
1629                         dfwdev.dst = nodes[i];
1630                         err = fw_explore_node(&dfwdev);
1631                         if (err)
1632                                 nodes[todo2++] = nodes[i];
1633                         if (firewire_debug)
1634                                 printf("%s: node %d, err = %d\n",
1635                                         __FUNCTION__, node, err);
1636                 }
1637                 todo = todo2;
1638         }
1639         splx(s);
1640 }
1641
1642
1643 static void
1644 fw_bus_probe_thread(void *arg)
1645 {
1646         struct firewire_comm *fc;
1647
1648         fc = (struct firewire_comm *)arg;
1649
1650         mtx_lock(&fc->wait_lock);
1651         while (fc->status != FWBUSDETACH) {
1652                 if (fc->status == FWBUSEXPLORE) {
1653                         mtx_unlock(&fc->wait_lock);
1654                         fw_explore(fc);
1655                         fc->status = FWBUSEXPDONE;
1656                         if (firewire_debug)
1657                                 printf("bus_explore done\n");
1658                         fw_attach_dev(fc);
1659                         mtx_lock(&fc->wait_lock);
1660                 }
1661                 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0);
1662         }
1663         mtx_unlock(&fc->wait_lock);
1664         kthread_exit(0);
1665 }
1666
1667 /*
1668  * To attach sub-devices layer onto IEEE1394 bus.
1669  */
1670 static void
1671 fw_attach_dev(struct firewire_comm *fc)
1672 {
1673         struct fw_device *fwdev, *next;
1674         int i, err;
1675         device_t *devlistp;
1676         int devcnt;
1677         struct firewire_dev_comm *fdc;
1678
1679         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1680                 next = STAILQ_NEXT(fwdev, link);
1681                 if (fwdev->status == FWDEVINIT) {
1682                         fwdev->status = FWDEVATTACHED;
1683                 } else if (fwdev->status == FWDEVINVAL) {
1684                         fwdev->rcnt ++;
1685                         if (fwdev->rcnt > hold_count) {
1686                                 /*
1687                                  * Remove devices which have not been seen
1688                                  * for a while.
1689                                  */
1690                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1691                                     link);
1692                                 free(fwdev, M_FW);
1693                         }
1694                 }
1695         }
1696
1697         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1698         if( err != 0 )
1699                 return;
1700         for( i = 0 ; i < devcnt ; i++){
1701                 if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
1702                         fdc = device_get_softc(devlistp[i]);
1703                         if (fdc->post_explore != NULL)
1704                                 fdc->post_explore(fdc);
1705                 }
1706         }
1707         free(devlistp, M_TEMP);
1708
1709         return;
1710 }
1711
1712 /*
1713  * To allocate unique transaction label.
1714  */
1715 static int
1716 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1717 {
1718         u_int dst, new_tlabel;
1719         struct fw_xfer *txfer;
1720         int s;
1721
1722         dst = xfer->send.hdr.mode.hdr.dst & 0x3f;
1723         s = splfw();
1724         mtx_lock(&fc->tlabel_lock);
1725         new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f;
1726         STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
1727                 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst)
1728                                 break;
1729         if(txfer == NULL) {
1730                 fc->last_tlabel[dst] = new_tlabel;
1731                 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
1732                 mtx_unlock(&fc->tlabel_lock);
1733                 splx(s);
1734                 xfer->tl = new_tlabel;
1735                 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
1736                 if (firewire_debug > 1)
1737                         printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel);
1738                 return (new_tlabel);
1739         }
1740         mtx_unlock(&fc->tlabel_lock);
1741         splx(s);
1742
1743         if (firewire_debug > 1)
1744                 printf("fw_get_tlabel: no free tlabel\n");
1745         return (-1);
1746 }
1747
1748 static void
1749 fw_rcv_copy(struct fw_rcv_buf *rb)
1750 {
1751         struct fw_pkt *pkt;
1752         u_char *p;
1753         struct tcode_info *tinfo;
1754         u_int res, i, len, plen;
1755
1756         rb->xfer->recv.spd = rb->spd;
1757
1758         pkt = (struct fw_pkt *)rb->vec->iov_base;
1759         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1760
1761         /* Copy header */
1762         p = (u_char *)&rb->xfer->recv.hdr;
1763         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1764         rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
1765         rb->vec->iov_len -= tinfo->hdr_len;
1766
1767         /* Copy payload */
1768         p = (u_char *)rb->xfer->recv.payload;
1769         res = rb->xfer->recv.pay_len;
1770
1771         /* special handling for RRESQ */
1772         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1773             p != NULL && res >= sizeof(uint32_t)) {
1774                 *(uint32_t *)p = pkt->mode.rresq.data;
1775                 rb->xfer->recv.pay_len = sizeof(uint32_t);
1776                 return;
1777         }
1778
1779         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1780                 return;
1781
1782         plen = pkt->mode.rresb.len;
1783
1784         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1785                 len = MIN(rb->vec->iov_len, plen);
1786                 if (res < len) {
1787                         printf("rcv buffer(%d) is %d bytes short.\n",
1788                             rb->xfer->recv.pay_len, len - res);
1789                         len = res;
1790                 }
1791                 bcopy(rb->vec->iov_base, p, len);
1792                 p += len;
1793                 res -= len;
1794                 plen -= len;
1795                 if (res == 0 || plen == 0)
1796                         break;
1797         }
1798         rb->xfer->recv.pay_len -= res;
1799
1800 }
1801
1802 /*
1803  * Generic packet receiving process.
1804  */
1805 void
1806 fw_rcv(struct fw_rcv_buf *rb)
1807 {
1808         struct fw_pkt *fp, *resfp;
1809         struct fw_bind *bind;
1810         int tcode;
1811         int i, len, oldstate;
1812 #if 0
1813         {
1814                 uint32_t *qld;
1815                 int i;
1816                 qld = (uint32_t *)buf;
1817                 printf("spd %d len:%d\n", spd, len);
1818                 for( i = 0 ; i <= len && i < 32; i+= 4){
1819                         printf("0x%08x ", ntohl(qld[i/4]));
1820                         if((i % 16) == 15) printf("\n");
1821                 }
1822                 if((i % 16) != 15) printf("\n");
1823         }
1824 #endif
1825         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1826         tcode = fp->mode.common.tcode;
1827         switch (tcode) {
1828         case FWTCODE_WRES:
1829         case FWTCODE_RRESQ:
1830         case FWTCODE_RRESB:
1831         case FWTCODE_LRES:
1832                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1833                                 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode);
1834                 if(rb->xfer == NULL) {
1835                         printf("fw_rcv: unknown response "
1836                             "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1837                             tcode_str[tcode], tcode,
1838                             fp->mode.hdr.src,
1839                             fp->mode.hdr.tlrt >> 2,
1840                             fp->mode.hdr.tlrt & 3,
1841                             fp->mode.rresq.data);
1842 #if 0
1843                         printf("try ad-hoc work around!!\n");
1844                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1845                                         (fp->mode.hdr.tlrt >> 2)^3);
1846                         if (rb->xfer == NULL) {
1847                                 printf("no use...\n");
1848                                 return;
1849                         }
1850 #else
1851                         return;
1852 #endif
1853                 }
1854                 fw_rcv_copy(rb);
1855                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1856                         rb->xfer->resp = EIO;
1857                 else
1858                         rb->xfer->resp = 0;
1859                 /* make sure the packet is drained in AT queue */
1860                 oldstate = rb->xfer->flag;
1861                 rb->xfer->flag = FWXF_RCVD;
1862                 switch (oldstate) {
1863                 case FWXF_SENT:
1864                         fw_xfer_done(rb->xfer);
1865                         break;
1866                 case FWXF_START:
1867 #if 0
1868                         if (firewire_debug)
1869                                 printf("not sent yet tl=%x\n", rb->xfer->tl);
1870 #endif
1871                         break;
1872                 default:
1873                         printf("unexpected flag 0x%02x\n", rb->xfer->flag);
1874                 }
1875                 return;
1876         case FWTCODE_WREQQ:
1877         case FWTCODE_WREQB:
1878         case FWTCODE_RREQQ:
1879         case FWTCODE_RREQB:
1880         case FWTCODE_LREQ:
1881                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1882                         fp->mode.rreqq.dest_lo);
1883                 if(bind == NULL){
1884                         printf("Unknown service addr 0x%04x:0x%08x %s(%x)"
1885 #if defined(__DragonFly__) || __FreeBSD_version < 500000
1886                             " src=0x%x data=%lx\n",
1887 #else
1888                             " src=0x%x data=%x\n",
1889 #endif
1890                             fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo,
1891                             tcode_str[tcode], tcode,
1892                             fp->mode.hdr.src, ntohl(fp->mode.wreqq.data));
1893                         if (rb->fc->status == FWBUSINIT) {
1894                                 printf("fw_rcv: cannot respond(bus reset)!\n");
1895                                 return;
1896                         }
1897                         rb->xfer = fw_xfer_alloc(M_FWXFER);
1898                         if(rb->xfer == NULL){
1899                                 return;
1900                         }
1901                         rb->xfer->send.spd = rb->spd;
1902                         rb->xfer->send.pay_len = 0;
1903                         resfp = &rb->xfer->send.hdr;
1904                         switch (tcode) {
1905                         case FWTCODE_WREQQ:
1906                         case FWTCODE_WREQB:
1907                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
1908                                 break;
1909                         case FWTCODE_RREQQ:
1910                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
1911                                 break;
1912                         case FWTCODE_RREQB:
1913                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
1914                                 break;
1915                         case FWTCODE_LREQ:
1916                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
1917                                 break;
1918                         }
1919                         resfp->mode.hdr.dst = fp->mode.hdr.src;
1920                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
1921                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
1922                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
1923                         resfp->mode.rresb.extcode = 0;
1924                         resfp->mode.rresb.len = 0;
1925 /*
1926                         rb->xfer->hand = fw_xferwake;
1927 */
1928                         rb->xfer->hand = fw_xfer_free;
1929                         if(fw_asyreq(rb->fc, -1, rb->xfer)){
1930                                 fw_xfer_free(rb->xfer);
1931                                 return;
1932                         }
1933                         return;
1934                 }
1935                 len = 0;
1936                 for (i = 0; i < rb->nvec; i ++)
1937                         len += rb->vec[i].iov_len;
1938                 rb->xfer = STAILQ_FIRST(&bind->xferlist);
1939                 if (rb->xfer == NULL) {
1940 #if 1
1941                         printf("Discard a packet for this bind.\n");
1942 #endif
1943                         return;
1944                 }
1945                 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1946                 fw_rcv_copy(rb);
1947                 rb->xfer->hand(rb->xfer);
1948                 return;
1949 #if 0 /* shouldn't happen ?? or for GASP */
1950         case FWTCODE_STREAM:
1951         {
1952                 struct fw_xferq *xferq;
1953
1954                 xferq = rb->fc->ir[sub];
1955 #if 0
1956                 printf("stream rcv dma %d len %d off %d spd %d\n",
1957                         sub, len, off, spd);
1958 #endif
1959                 if(xferq->queued >= xferq->maxq) {
1960                         printf("receive queue is full\n");
1961                         return;
1962                 }
1963                 /* XXX get xfer from xfer queue, we don't need copy for
1964                         per packet mode */
1965                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
1966                                                 vec[0].iov_len);
1967                 if (rb->xfer == NULL)
1968                         return;
1969                 fw_rcv_copy(rb)
1970                 s = splfw();
1971                 xferq->queued++;
1972                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
1973                 splx(s);
1974                 sc = device_get_softc(rb->fc->bdev);
1975 #if defined(__DragonFly__) || __FreeBSD_version < 500000
1976                 if (&xferq->rsel.si_pid != 0)
1977 #else
1978                 if (SEL_WAITING(&xferq->rsel))
1979 #endif
1980                         selwakeuppri(&xferq->rsel, FWPRI);
1981                 if (xferq->flag & FWXFERQ_WAKEUP) {
1982                         xferq->flag &= ~FWXFERQ_WAKEUP;
1983                         wakeup((caddr_t)xferq);
1984                 }
1985                 if (xferq->flag & FWXFERQ_HANDLER) {
1986                         xferq->hand(xferq);
1987                 }
1988                 return;
1989                 break;
1990         }
1991 #endif
1992         default:
1993                 printf("fw_rcv: unknow tcode %d\n", tcode);
1994                 break;
1995         }
1996 }
1997
1998 /*
1999  * Post process for Bus Manager election process.
2000  */
2001 static void
2002 fw_try_bmr_callback(struct fw_xfer *xfer)
2003 {
2004         struct firewire_comm *fc;
2005         int bmr;
2006
2007         if (xfer == NULL)
2008                 return;
2009         fc = xfer->fc;
2010         if (xfer->resp != 0)
2011                 goto error;
2012         if (xfer->recv.payload == NULL)
2013                 goto error;
2014         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2015                 goto error;
2016
2017         bmr = ntohl(xfer->recv.payload[0]);
2018         if (bmr == 0x3f)
2019                 bmr = fc->nodeid;
2020
2021         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2022         fw_xfer_free_buf(xfer);
2023         fw_bmr(fc);
2024         return;
2025
2026 error:
2027         device_printf(fc->bdev, "bus manager election failed\n");
2028         fw_xfer_free_buf(xfer);
2029 }
2030
2031
2032 /*
2033  * To candidate Bus Manager election process.
2034  */
2035 static void
2036 fw_try_bmr(void *arg)
2037 {
2038         struct fw_xfer *xfer;
2039         struct firewire_comm *fc = (struct firewire_comm *)arg;
2040         struct fw_pkt *fp;
2041         int err = 0;
2042
2043         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2044         if(xfer == NULL){
2045                 return;
2046         }
2047         xfer->send.spd = 0;
2048         fc->status = FWBUSMGRELECT;
2049
2050         fp = &xfer->send.hdr;
2051         fp->mode.lreq.dest_hi = 0xffff;
2052         fp->mode.lreq.tlrt = 0;
2053         fp->mode.lreq.tcode = FWTCODE_LREQ;
2054         fp->mode.lreq.pri = 0;
2055         fp->mode.lreq.src = 0;
2056         fp->mode.lreq.len = 8;
2057         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2058         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2059         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2060         xfer->send.payload[0] = htonl(0x3f);
2061         xfer->send.payload[1] = htonl(fc->nodeid);
2062         xfer->hand = fw_try_bmr_callback;
2063
2064         err = fw_asyreq(fc, -1, xfer);
2065         if(err){
2066                 fw_xfer_free_buf(xfer);
2067                 return;
2068         }
2069         return;
2070 }
2071
2072 #ifdef FW_VMACCESS
2073 /*
2074  * Software implementation for physical memory block access.
2075  * XXX:Too slow, usef for debug purpose only.
2076  */
2077 static void
2078 fw_vmaccess(struct fw_xfer *xfer){
2079         struct fw_pkt *rfp, *sfp = NULL;
2080         uint32_t *ld = (uint32_t *)xfer->recv.buf;
2081
2082         printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2083                         xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
2084         printf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2085         if(xfer->resp != 0){
2086                 fw_xfer_free( xfer);
2087                 return;
2088         }
2089         if(xfer->recv.buf == NULL){
2090                 fw_xfer_free( xfer);
2091                 return;
2092         }
2093         rfp = (struct fw_pkt *)xfer->recv.buf;
2094         switch(rfp->mode.hdr.tcode){
2095                 /* XXX need fix for 64bit arch */
2096                 case FWTCODE_WREQB:
2097                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2098                         xfer->send.len = 12;
2099                         sfp = (struct fw_pkt *)xfer->send.buf;
2100                         bcopy(rfp->mode.wreqb.payload,
2101                                 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
2102                         sfp->mode.wres.tcode = FWTCODE_WRES;
2103                         sfp->mode.wres.rtcode = 0;
2104                         break;
2105                 case FWTCODE_WREQQ:
2106                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2107                         xfer->send.len = 12;
2108                         sfp->mode.wres.tcode = FWTCODE_WRES;
2109                         *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
2110                         sfp->mode.wres.rtcode = 0;
2111                         break;
2112                 case FWTCODE_RREQB:
2113                         xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT);
2114                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2115                         sfp = (struct fw_pkt *)xfer->send.buf;
2116                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2117                                 sfp->mode.rresb.payload, (uint16_t)ntohs(rfp->mode.rreqb.len));
2118                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2119                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2120                         sfp->mode.rresb.rtcode = 0;
2121                         sfp->mode.rresb.extcode = 0;
2122                         break;
2123                 case FWTCODE_RREQQ:
2124                         xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2125                         xfer->send.len = 16;
2126                         sfp = (struct fw_pkt *)xfer->send.buf;
2127                         sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2128                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2129                         sfp->mode.rresb.rtcode = 0;
2130                         break;
2131                 default:
2132                         fw_xfer_free( xfer);
2133                         return;
2134         }
2135         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2136         xfer->dst = ntohs(rfp->mode.hdr.src);
2137         xfer->hand = fw_xfer_free;
2138
2139         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2140         sfp->mode.hdr.pri = 0;
2141
2142         fw_asyreq(xfer->fc, -1, xfer);
2143 /**/
2144         return;
2145 }
2146 #endif
2147
2148 /*
2149  * CRC16 check-sum for IEEE1394 register blocks.
2150  */
2151 uint16_t
2152 fw_crc16(uint32_t *ptr, uint32_t len){
2153         uint32_t i, sum, crc = 0;
2154         int shift;
2155         len = (len + 3) & ~3;
2156         for(i = 0 ; i < len ; i+= 4){
2157                 for( shift = 28 ; shift >= 0 ; shift -= 4){
2158                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2159                         crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2160                 }
2161                 crc &= 0xffff;
2162         }
2163         return((uint16_t) crc);
2164 }
2165
2166 static int
2167 fw_bmr(struct firewire_comm *fc)
2168 {
2169         struct fw_device fwdev;
2170         union fw_self_id *self_id;
2171         int cmstr;
2172         uint32_t quad;
2173
2174         /* Check to see if the current root node is cycle master capable */
2175         self_id = fw_find_self_id(fc, fc->max_node);
2176         if (fc->max_node > 0) {
2177                 /* XXX check cmc bit of businfo block rather than contender */
2178                 if (self_id->p0.link_active && self_id->p0.contender)
2179                         cmstr = fc->max_node;
2180                 else {
2181                         device_printf(fc->bdev,
2182                                 "root node is not cycle master capable\n");
2183                         /* XXX shall we be the cycle master? */
2184                         cmstr = fc->nodeid;
2185                         /* XXX need bus reset */
2186                 }
2187         } else
2188                 cmstr = -1;
2189
2190         device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID));
2191         if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2192                 /* We are not the bus manager */
2193                 printf("\n");
2194                 return(0);
2195         }
2196         printf("(me)\n");
2197
2198         /* Optimize gapcount */
2199         if(fc->max_hop <= MAX_GAPHOP )
2200                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2201         /* If we are the cycle master, nothing to do */
2202         if (cmstr == fc->nodeid || cmstr == -1)
2203                 return 0;
2204         /* Bus probe has not finished, make dummy fwdev for cmstr */
2205         bzero(&fwdev, sizeof(fwdev));
2206         fwdev.fc = fc;
2207         fwdev.dst = cmstr;
2208         fwdev.speed = 0;
2209         fwdev.maxrec = 8; /* 512 */
2210         fwdev.status = FWDEVINIT;
2211         /* Set cmstr bit on the cycle master */
2212         quad = htonl(1 << 8);
2213         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2214                 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2215
2216         return 0;
2217 }
2218
2219 int
2220 fw_open_isodma(struct firewire_comm *fc, int tx)
2221 {
2222         struct fw_xferq **xferqa;
2223         struct fw_xferq *xferq;
2224         int i;
2225
2226         if (tx)
2227                 xferqa = &fc->it[0];
2228         else
2229                 xferqa = &fc->ir[0];
2230
2231         FW_GLOCK(fc);
2232         for (i = 0; i < fc->nisodma; i ++) {
2233                 xferq = xferqa[i];
2234                 if ((xferq->flag & FWXFERQ_OPEN) == 0) {
2235                         xferq->flag |= FWXFERQ_OPEN;
2236                         break;
2237                 }
2238         }
2239         if (i == fc->nisodma) {
2240                 printf("no free dma channel (tx=%d)\n", tx);
2241                 i = -1;
2242         }
2243         FW_GUNLOCK(fc);
2244         return (i);
2245 }
2246
2247 static int
2248 fw_modevent(module_t mode, int type, void *data)
2249 {
2250         int err = 0;
2251 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2252         static eventhandler_tag fwdev_ehtag = NULL;
2253 #endif
2254
2255         switch (type) {
2256         case MOD_LOAD:
2257 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2258                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2259                                                 fwdev_clone, 0, 1000);
2260 #endif
2261                 break;
2262         case MOD_UNLOAD:
2263 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2264                 if (fwdev_ehtag != NULL)
2265                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2266 #endif
2267                 break;
2268         case MOD_SHUTDOWN:
2269                 break;
2270         default:
2271                 return (EOPNOTSUPP);
2272         }
2273         return (err);
2274 }
2275
2276
2277 #ifdef __DragonFly__
2278 DECLARE_DUMMY_MODULE(firewire);
2279 #endif
2280 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0);
2281 MODULE_VERSION(firewire, 1);