sys/dev/firewire/firewire.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-4-Clause
   3  *
   4  * Copyright (c) 2003 Hidetoshi Shimokawa
   5  * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the acknowledgement as bellow:
  18  *
  19  *    This product includes software developed by K. Kobayashi and H. Shimokawa
  20  *
  21  * 4. The name of the author may not be used to endorse or promote products
  22  *    derived from this software without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  26  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  27  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  28  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  29  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  30  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  32  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  33  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  34  * POSSIBILITY OF SUCH DAMAGE.
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __FBSDID("$FreeBSD$");
  39
  40 #include <sys/param.h>
  41 #include <sys/conf.h>
  42 #include <sys/eventhandler.h>
  43 #include <sys/jail.h>
  44 #include <sys/kernel.h>
  45 #include <sys/kthread.h>
  46 #include <sys/malloc.h>
  47 #include <sys/module.h>
  48 #include <sys/sysctl.h>
  49 #include <sys/systm.h>
  50
  51 #include <sys/kdb.h>
  52 #include <sys/bus.h>            /* used by smbus and newbus */
  53 #include <machine/bus.h>
  54
  55 #include <dev/firewire/firewire.h>
  56 #include <dev/firewire/firewirereg.h>
  57 #include <dev/firewire/fwmem.h>
  58 #include <dev/firewire/iec13213.h>
  59 #include <dev/firewire/iec68113.h>
  60
  61 struct crom_src_buf {
  62         struct crom_src src;
  63         struct crom_chunk root;
  64         struct crom_chunk vendor;
  65         struct crom_chunk hw;
  66 };
  67
  68 int firewire_debug = 0, try_bmr = 1, hold_count = 0;
  69 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  70         "FireWire driver debug flag");
  71 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
  72     "FireWire Subsystem");
  73 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  74         "Try to be a bus manager");
  75 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  76         "Number of count of bus resets for removing lost device information");
  77
  78 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  79 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  80
  81 #define FW_MAXASYRTY 4
  82
  83 devclass_t firewire_devclass;
  84
  85 static void firewire_identify(driver_t *, device_t);
  86 static int firewire_probe(device_t);
  87 static int firewire_attach(device_t);
  88 static int firewire_detach(device_t);
  89 static int firewire_resume(device_t);
  90 static void firewire_xfer_timeout(void *, int);
  91 static device_t firewire_add_child(device_t, u_int, const char *, int);
  92 static void fw_try_bmr(void *);
  93 static void fw_try_bmr_callback(struct fw_xfer *);
  94 static void fw_asystart(struct fw_xfer *);
  95 static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *);
  96 static void fw_bus_probe(void *);
  97 static void fw_attach_dev(struct firewire_comm *);
  98 static void fw_bus_probe_thread(void *);
  99 #ifdef FW_VMACCESS
 100 static void fw_vmaccess (struct fw_xfer *);
 101 #endif
 102 static int fw_bmr (struct firewire_comm *);
 103 static void fw_dump_hdr(struct fw_pkt *, char *);
 104
 105 static device_method_t firewire_methods[] = {
 106         /* Device interface */
 107         DEVMETHOD(device_identify,      firewire_identify),
 108         DEVMETHOD(device_probe,         firewire_probe),
 109         DEVMETHOD(device_attach,        firewire_attach),
 110         DEVMETHOD(device_detach,        firewire_detach),
 111         DEVMETHOD(device_suspend,       bus_generic_suspend),
 112         DEVMETHOD(device_resume,        firewire_resume),
 113         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 114
 115         /* Bus interface */
 116         DEVMETHOD(bus_add_child,        firewire_add_child),
 117
 118         DEVMETHOD_END
 119 };
 120
 121 char *linkspeed[] = {
 122         "S100", "S200", "S400", "S800",
 123         "S1600", "S3200", "undef", "undef"
 124 };
 125
 126 static char *tcode_str[] = {
 127         "WREQQ", "WREQB", "WRES",   "undef",
 128         "RREQQ", "RREQB", "RRESQ",  "RRESB",
 129         "CYCS",  "LREQ",  "STREAM", "LRES",
 130         "undef", "undef", "PHY",    "undef"
 131 };
 132
 133 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
 134 #define MAX_GAPHOP 15
 135 u_int gap_cnt[] = { 5,  5,  7,  8, 10, 13, 16, 18,
 136                    21, 24, 26, 29, 32, 35, 37, 40};
 137
 138 static driver_t firewire_driver = {
 139         "firewire",
 140         firewire_methods,
 141         sizeof(struct firewire_softc),
 142 };
 143
 144 /*
 145  * Lookup fwdev by node id.
 146  */
 147 struct fw_device *
 148 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
 149 {
 150         struct fw_device *fwdev;
 151
 152         FW_GLOCK(fc);
 153         STAILQ_FOREACH(fwdev, &fc->devices, link)
 154                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 155                         break;
 156         FW_GUNLOCK(fc);
 157
 158         return fwdev;
 159 }
 160
 161 /*
 162  * Lookup fwdev by EUI64.
 163  */
 164 struct fw_device *
 165 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
 166 {
 167         struct fw_device *fwdev;
 168
 169         FW_GLOCK(fc);
 170         STAILQ_FOREACH(fwdev, &fc->devices, link)
 171                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 172                         break;
 173         FW_GUNLOCK(fc);
 174
 175         if (fwdev == NULL)
 176                 return NULL;
 177         if (fwdev->status == FWDEVINVAL)
 178                 return NULL;
 179         return fwdev;
 180 }
 181
 182 /*
 183  * Async. request procedure for userland application.
 184  */
 185 int
 186 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
 187 {
 188         int err = 0;
 189         struct fw_xferq *xferq;
 190         int len;
 191         struct fw_pkt *fp;
 192         int tcode;
 193         struct tcode_info *info;
 194
 195         if (xfer == NULL)
 196                 return EINVAL;
 197         if (xfer->hand == NULL) {
 198                 printf("hand == NULL\n");
 199                 return EINVAL;
 200         }
 201         fp = &xfer->send.hdr;
 202
 203         tcode = fp->mode.common.tcode & 0xf;
 204         info = &fc->tcode[tcode];
 205         if (info->flag == 0) {
 206                 printf("invalid tcode=%x\n", tcode);
 207                 return EINVAL;
 208         }
 209
 210         /* XXX allow bus explore packets only after bus rest */
 211         if ((fc->status < FWBUSEXPLORE) &&
 212             ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
 213             (fp->mode.rreqq.dest_lo  < 0xf0000000) ||
 214             (fp->mode.rreqq.dest_lo >= 0xf0001000))) {
 215                 xfer->resp = EAGAIN;
 216                 xfer->flag = FWXF_BUSY;
 217                 return (EAGAIN);
 218         }
 219
 220         if (info->flag & FWTI_REQ)
 221                 xferq = fc->atq;
 222         else
 223                 xferq = fc->ats;
 224         len = info->hdr_len;
 225         if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
 226                 printf("send.pay_len > maxrec\n");
 227                 return EINVAL;
 228         }
 229         if (info->flag & FWTI_BLOCK_STR)
 230                 len = fp->mode.stream.len;
 231         else if (info->flag & FWTI_BLOCK_ASY)
 232                 len = fp->mode.rresb.len;
 233         else
 234                 len = 0;
 235         if (len != xfer->send.pay_len) {
 236                 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
 237                     len, xfer->send.pay_len, tcode_str[tcode], tcode);
 238                 return EINVAL;
 239         }
 240
 241         if (xferq->start == NULL) {
 242                 printf("xferq->start == NULL\n");
 243                 return EINVAL;
 244         }
 245         if (!(xferq->queued < xferq->maxq)) {
 246                 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
 247                         xferq->queued);
 248                 return EAGAIN;
 249         }
 250
 251         xfer->tl = -1;
 252         if (info->flag & FWTI_TLABEL) {
 253                 if (fw_get_tlabel(fc, xfer) < 0)
 254                         return EAGAIN;
 255         }
 256
 257         xfer->resp = 0;
 258         xfer->fc = fc;
 259         xfer->q = xferq;
 260
 261         fw_asystart(xfer);
 262         return err;
 263 }
 264
 265 /*
 266  * Wakeup blocked process.
 267  */
 268 void
 269 fw_xferwake(struct fw_xfer *xfer)
 270 {
 271         struct mtx *lock = &xfer->fc->wait_lock;
 272
 273         mtx_lock(lock);
 274         xfer->flag |= FWXF_WAKE;
 275         mtx_unlock(lock);
 276
 277         wakeup(xfer);
 278         return;
 279 }
 280
 281 int
 282 fw_xferwait(struct fw_xfer *xfer)
 283 {
 284         struct mtx *lock = &xfer->fc->wait_lock;
 285         int err = 0;
 286
 287         mtx_lock(lock);
 288         while ((xfer->flag & FWXF_WAKE) == 0)
 289                 err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0);
 290         mtx_unlock(lock);
 291
 292         return (err);
 293 }
 294
 295 /*
 296  * Async. request with given xfer structure.
 297  */
 298 static void
 299 fw_asystart(struct fw_xfer *xfer)
 300 {
 301         struct firewire_comm *fc = xfer->fc;
 302
 303         /* Protect from interrupt/timeout */
 304         FW_GLOCK(fc);
 305         xfer->flag = FWXF_INQ;
 306         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 307 #if 0
 308         xfer->q->queued++;
 309 #endif
 310         FW_GUNLOCK(fc);
 311         /* XXX just queue for mbuf */
 312         if (xfer->mbuf == NULL)
 313                 xfer->q->start(fc);
 314         return;
 315 }
 316
 317 static void
 318 firewire_identify(driver_t *driver, device_t parent)
 319 {
 320         BUS_ADD_CHILD(parent, 0, "firewire", -1);
 321 }
 322
 323 static int
 324 firewire_probe(device_t dev)
 325 {
 326         device_set_desc(dev, "IEEE1394(FireWire) bus");
 327         return (0);
 328 }
 329
 330 /* Just use a per-packet callout? */
 331 static void
 332 firewire_xfer_timeout(void *arg, int pending)
 333 {
 334         struct firewire_comm *fc = (struct firewire_comm *)arg;
 335         struct fw_xfer *xfer, *txfer;
 336         struct timeval tv;
 337         struct timeval split_timeout;
 338         STAILQ_HEAD(, fw_xfer) xfer_timeout;
 339         int i;
 340
 341         split_timeout.tv_sec = 0;
 342         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 343
 344         microtime(&tv);
 345         timevalsub(&tv, &split_timeout);
 346         STAILQ_INIT(&xfer_timeout);
 347
 348         mtx_lock(&fc->tlabel_lock);
 349         for (i = 0; i < nitems(fc->tlabels); i++) {
 350                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 351                         if ((xfer->flag & FWXF_SENT) == 0)
 352                                 /* not sent yet */
 353                                 break;
 354                         if (timevalcmp(&xfer->tv, &tv, >))
 355                                 /* the rests are newer than this */
 356                                 break;
 357                         device_printf(fc->bdev,
 358                             "split transaction timeout: tl=0x%x flag=0x%02x\n",
 359                             i, xfer->flag);
 360                         fw_dump_hdr(&xfer->send.hdr, "send");
 361                         xfer->resp = ETIMEDOUT;
 362                         xfer->tl = -1;
 363                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 364                         STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
 365                 }
 366         }
 367         mtx_unlock(&fc->tlabel_lock);
 368         fc->timeout(fc);
 369
 370         STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer)
 371                 xfer->hand(xfer);
 372 }
 373
 374 #define WATCHDOG_HZ 10
 375 static void
 376 firewire_watchdog(void *arg)
 377 {
 378         struct firewire_comm *fc;
 379         static int watchdog_clock = 0;
 380
 381         fc = arg;
 382
 383         /*
 384          * At boot stage, the device interrupt is disabled and
 385          * We encounter a timeout easily. To avoid this,
 386          * ignore clock interrupt for a while.
 387          */
 388         if (watchdog_clock > WATCHDOG_HZ * 15)
 389                 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout);
 390         else
 391                 watchdog_clock++;
 392
 393         callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ,
 394             firewire_watchdog, fc);
 395 }
 396
 397 /*
 398  * The attach routine.
 399  */
 400 static int
 401 firewire_attach(device_t dev)
 402 {
 403         int unit;
 404         struct firewire_softc *sc = device_get_softc(dev);
 405         device_t pa = device_get_parent(dev);
 406         struct firewire_comm *fc;
 407
 408         fc = device_get_softc(pa);
 409         sc->fc = fc;
 410         fc->status = FWBUSNOTREADY;
 411
 412         unit = device_get_unit(dev);
 413         if (fc->nisodma > FWMAXNDMA)
 414                 fc->nisodma = FWMAXNDMA;
 415
 416         fwdev_makedev(sc);
 417
 418         fc->crom_src_buf = malloc(sizeof(struct crom_src_buf),
 419             M_FW, M_NOWAIT | M_ZERO);
 420         if (fc->crom_src_buf == NULL) {
 421                 device_printf(fc->dev,
 422                     "%s: unable to allocate crom src buffer\n", __func__);
 423                 return ENOMEM;
 424         }
 425         fc->topology_map = malloc(sizeof(struct fw_topology_map),
 426             M_FW, M_NOWAIT | M_ZERO);
 427         if (fc->topology_map == NULL) {
 428                 device_printf(fc->dev, "%s: unable to allocate topology map\n",
 429                     __func__);
 430                 free(fc->crom_src_buf, M_FW);
 431                 return ENOMEM;
 432         }
 433         fc->speed_map = malloc(sizeof(struct fw_speed_map),
 434             M_FW, M_NOWAIT | M_ZERO);
 435         if (fc->speed_map == NULL) {
 436                 device_printf(fc->dev, "%s: unable to allocate speed map\n",
 437                     __func__);
 438                 free(fc->crom_src_buf, M_FW);
 439                 free(fc->topology_map, M_FW);
 440                 return ENOMEM;
 441         }
 442
 443         mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF);
 444         mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF);
 445         CALLOUT_INIT(&fc->timeout_callout);
 446         CALLOUT_INIT(&fc->bmr_callout);
 447         CALLOUT_INIT(&fc->busprobe_callout);
 448         TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc);
 449
 450         callout_reset(&sc->fc->timeout_callout, hz,
 451             firewire_watchdog, sc->fc);
 452
 453         /* create thread */
 454         kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread,
 455             0, 0, "fw%d_probe", unit);
 456
 457         /* Locate our children */
 458         bus_generic_probe(dev);
 459
 460         /* launch attachement of the added children */
 461         bus_generic_attach(dev);
 462
 463         /* bus_reset */
 464         FW_GLOCK(fc);
 465         fw_busreset(fc, FWBUSNOTREADY);
 466         FW_GUNLOCK(fc);
 467         fc->ibr(fc);
 468
 469         return 0;
 470 }
 471
 472 /*
 473  * Attach it as child.
 474  */
 475 static device_t
 476 firewire_add_child(device_t dev, u_int order, const char *name, int unit)
 477 {
 478         device_t child;
 479         struct firewire_softc *sc;
 480
 481         sc = device_get_softc(dev);
 482         child = device_add_child(dev, name, unit);
 483         if (child) {
 484                 device_set_ivars(child, sc->fc);
 485                 device_probe_and_attach(child);
 486         }
 487
 488         return child;
 489 }
 490
 491 static int
 492 firewire_resume(device_t dev)
 493 {
 494         struct firewire_softc *sc;
 495
 496         sc = device_get_softc(dev);
 497         sc->fc->status = FWBUSNOTREADY;
 498
 499         bus_generic_resume(dev);
 500
 501         return (0);
 502 }
 503
 504 /*
 505  * Detach it.
 506  */
 507 static int
 508 firewire_detach(device_t dev)
 509 {
 510         struct firewire_softc *sc;
 511         struct firewire_comm *fc;
 512         struct fw_device *fwdev, *fwdev_next;
 513         int err;
 514
 515         sc = device_get_softc(dev);
 516         fc = sc->fc;
 517         mtx_lock(&fc->wait_lock);
 518         fc->status = FWBUSDETACH;
 519         wakeup(fc);
 520         if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60))
 521                 printf("firewire probe thread didn't die\n");
 522         mtx_unlock(&fc->wait_lock);
 523
 524         if (fc->arq != 0 && fc->arq->maxq > 0)
 525                 fw_drain_txq(fc);
 526
 527         if ((err = fwdev_destroydev(sc)) != 0)
 528                 return err;
 529
 530         if ((err = bus_generic_detach(dev)) != 0)
 531                 return err;
 532
 533         callout_stop(&fc->timeout_callout);
 534         callout_stop(&fc->bmr_callout);
 535         callout_stop(&fc->busprobe_callout);
 536
 537         /* XXX xfer_free and untimeout on all xfers */
 538         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
 539              fwdev = fwdev_next) {
 540                 fwdev_next = STAILQ_NEXT(fwdev, link);
 541                 free(fwdev, M_FW);
 542         }
 543         free(fc->topology_map, M_FW);
 544         free(fc->speed_map, M_FW);
 545         free(fc->crom_src_buf, M_FW);
 546
 547         mtx_destroy(&fc->tlabel_lock);
 548         mtx_destroy(&fc->wait_lock);
 549         return (0);
 550 }
 551
 552 static void
 553 fw_xferq_drain(struct fw_xferq *xferq)
 554 {
 555         struct fw_xfer *xfer;
 556
 557         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 558                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 559 #if 0
 560                 xferq->queued--;
 561 #endif
 562                 xfer->resp = EAGAIN;
 563                 xfer->flag = FWXF_SENTERR;
 564                 fw_xfer_done(xfer);
 565         }
 566 }
 567
 568 void
 569 fw_drain_txq(struct firewire_comm *fc)
 570 {
 571         struct fw_xfer *xfer, *txfer;
 572         STAILQ_HEAD(, fw_xfer) xfer_drain;
 573         int i;
 574
 575         STAILQ_INIT(&xfer_drain);
 576
 577         FW_GLOCK(fc);
 578         fw_xferq_drain(fc->atq);
 579         fw_xferq_drain(fc->ats);
 580         for (i = 0; i < fc->nisodma; i++)
 581                 fw_xferq_drain(fc->it[i]);
 582         FW_GUNLOCK(fc);
 583
 584         mtx_lock(&fc->tlabel_lock);
 585         for (i = 0; i < 0x40; i++)
 586                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 587                         if (firewire_debug)
 588                                 printf("tl=%d flag=%d\n", i, xfer->flag);
 589                         xfer->tl = -1;
 590                         xfer->resp = EAGAIN;
 591                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 592                         STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
 593                 }
 594         mtx_unlock(&fc->tlabel_lock);
 595
 596         STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer)
 597                 xfer->hand(xfer);
 598 }
 599
 600 static void
 601 fw_reset_csr(struct firewire_comm *fc)
 602 {
 603         int i;
 604
 605         CSRARC(fc, STATE_CLEAR)
 606                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14;
 607         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 608         CSRARC(fc, NODE_IDS) = 0x3f;
 609
 610         CSRARC(fc, TOPO_MAP + 8) = 0;
 611         fc->irm = -1;
 612
 613         fc->max_node = -1;
 614
 615         for (i = 2; i < 0x100 / 4 - 2; i++) {
 616                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 617         }
 618         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14;
 619         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 620         CSRARC(fc, RESET_START) = 0;
 621         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 622         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 623         CSRARC(fc, CYCLE_TIME) = 0x0;
 624         CSRARC(fc, BUS_TIME) = 0x0;
 625         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 626         CSRARC(fc, BANDWIDTH_AV) = 4915;
 627         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 628         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 629         CSRARC(fc, IP_CHANNELS) = (1U << 31);
 630
 631         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 632         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 633         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 634             1 << 28 | 0xff << 16 | 0x09 << 8;
 635         CSRARC(fc, CONF_ROM + 0xc) = 0;
 636
 637         /* DV depend CSRs see blue book */
 638         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 639         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 640
 641         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14);
 642         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 643 }
 644
 645 static void
 646 fw_init_crom(struct firewire_comm *fc)
 647 {
 648         struct crom_src *src;
 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 #define FW_GENERATION_CHANGEABLE 2
 667         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 668         src->businfo.link_spd = fc->speed;
 669
 670         src->businfo.eui64.hi = fc->eui.hi;
 671         src->businfo.eui64.lo = fc->eui.lo;
 672
 673         STAILQ_INIT(&src->chunk_list);
 674
 675         fc->crom_src = src;
 676         fc->crom_root = &fc->crom_src_buf->root;
 677 }
 678
 679 static void
 680 fw_reset_crom(struct firewire_comm *fc)
 681 {
 682         struct crom_src_buf *buf;
 683         struct crom_src *src;
 684         struct crom_chunk *root;
 685
 686         buf =  fc->crom_src_buf;
 687         src = fc->crom_src;
 688         root = fc->crom_root;
 689
 690         STAILQ_INIT(&src->chunk_list);
 691
 692         bzero(root, sizeof(struct crom_chunk));
 693         crom_add_chunk(src, NULL, root, 0);
 694         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 695         /* private company_id */
 696         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 697         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 698         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 699         mtx_lock(&prison0.pr_mtx);
 700         crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname);
 701         mtx_unlock(&prison0.pr_mtx);
 702 }
 703
 704 /*
 705  * Called after bus reset.
 706  */
 707 void
 708 fw_busreset(struct firewire_comm *fc, uint32_t new_status)
 709 {
 710         struct firewire_dev_comm *fdc;
 711         struct crom_src *src;
 712         device_t *devlistp;
 713         uint32_t *newrom;
 714         int i, devcnt;
 715
 716         FW_GLOCK_ASSERT(fc);
 717         if (fc->status == FWBUSMGRELECT)
 718                 callout_stop(&fc->bmr_callout);
 719
 720         fc->status = new_status;
 721         fw_reset_csr(fc);
 722
 723         if (fc->status == FWBUSNOTREADY)
 724                 fw_init_crom(fc);
 725
 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         src = &fc->crom_src_buf->src;
 739         /*
 740          * If the old config rom needs to be overwritten,
 741          * bump the businfo.generation indicator to
 742          * indicate that we need to be reprobed
 743          * See 1394a-2000 8.3.2.5.4 for more details.
 744          * generation starts at 2 and rolls over at 0xF
 745          * back to 2.
 746          *
 747          * A generation of 0 indicates a device
 748          * that is not 1394a-2000 compliant.
 749          * A generation of 1 indicates a device that
 750          * does not change it's Bus Info Block or
 751          * Configuration ROM.
 752          */
 753 #define FW_MAX_GENERATION 0xF
 754         newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
 755         src = &fc->crom_src_buf->src;
 756         crom_load(src, newrom, CROMSIZE);
 757         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 758                 /* Bump generation and reload. */
 759                 src->businfo.generation++;
 760
 761                 /* Handle generation count wraps. */
 762                 if (src->businfo.generation < FW_GENERATION_CHANGEABLE)
 763                         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 764
 765                 /* Recalculate CRC to account for generation change. */
 766                 crom_load(src, newrom, CROMSIZE);
 767                 bcopy(newrom, fc->config_rom, CROMSIZE);
 768         }
 769         free(newrom, M_FW);
 770 }
 771
 772 /* Call once after reboot */
 773 void fw_init(struct firewire_comm *fc)
 774 {
 775         int i;
 776 #ifdef FW_VMACCESS
 777         struct fw_xfer *xfer;
 778         struct fw_bind *fwb;
 779 #endif
 780
 781         fc->arq->queued = 0;
 782         fc->ars->queued = 0;
 783         fc->atq->queued = 0;
 784         fc->ats->queued = 0;
 785
 786         fc->arq->buf = NULL;
 787         fc->ars->buf = NULL;
 788         fc->atq->buf = NULL;
 789         fc->ats->buf = NULL;
 790
 791         fc->arq->flag = 0;
 792         fc->ars->flag = 0;
 793         fc->atq->flag = 0;
 794         fc->ats->flag = 0;
 795
 796         STAILQ_INIT(&fc->atq->q);
 797         STAILQ_INIT(&fc->ats->q);
 798
 799         for (i = 0; i < fc->nisodma; i++) {
 800                 fc->it[i]->queued = 0;
 801                 fc->ir[i]->queued = 0;
 802
 803                 fc->it[i]->start = NULL;
 804                 fc->ir[i]->start = NULL;
 805
 806                 fc->it[i]->buf = NULL;
 807                 fc->ir[i]->buf = NULL;
 808
 809                 fc->it[i]->flag = FWXFERQ_STREAM;
 810                 fc->ir[i]->flag = FWXFERQ_STREAM;
 811
 812                 STAILQ_INIT(&fc->it[i]->q);
 813                 STAILQ_INIT(&fc->ir[i]->q);
 814         }
 815
 816         fc->arq->maxq = FWMAXQUEUE;
 817         fc->ars->maxq = FWMAXQUEUE;
 818         fc->atq->maxq = FWMAXQUEUE;
 819         fc->ats->maxq = FWMAXQUEUE;
 820
 821         for (i = 0; i < fc->nisodma; i++) {
 822                 fc->ir[i]->maxq = FWMAXQUEUE;
 823                 fc->it[i]->maxq = FWMAXQUEUE;
 824         }
 825
 826         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 827         CSRARC(fc, TOPO_MAP + 4) = 1;
 828         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 829         CSRARC(fc, SPED_MAP + 4) = 1;
 830
 831         STAILQ_INIT(&fc->devices);
 832
 833         /* Initialize Async handlers */
 834         STAILQ_INIT(&fc->binds);
 835         for (i = 0; i < 0x40; i++) {
 836                 STAILQ_INIT(&fc->tlabels[i]);
 837         }
 838
 839 /* DV depend CSRs see blue book */
 840 #if 0
 841         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 842         CSRARC(fc, oPCR) = 0x8000007a;
 843         for (i = 4; i < 0x7c/4; i += 4) {
 844                 CSRARC(fc, i + oPCR) = 0x8000007a;
 845         }
 846
 847         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 848         CSRARC(fc, iPCR) = 0x803f0000;
 849         for (i = 4; i < 0x7c/4; i += 4) {
 850                 CSRARC(fc, i + iPCR) = 0x0;
 851         }
 852 #endif
 853
 854         fc->crom_src_buf = NULL;
 855
 856 #ifdef FW_VMACCESS
 857         xfer = fw_xfer_alloc();
 858         if (xfer == NULL)
 859                 return;
 860
 861         fwb = malloc(sizeof(struct fw_bind), M_FW, M_NOWAIT);
 862         if (fwb == NULL) {
 863                 fw_xfer_free(xfer);
 864                 return;
 865         }
 866         xfer->hand = fw_vmaccess;
 867         xfer->fc = fc;
 868         xfer->sc = NULL;
 869
 870         fwb->start_hi = 0x2;
 871         fwb->start_lo = 0;
 872         fwb->addrlen = 0xffffffff;
 873         fwb->xfer = xfer;
 874         fw_bindadd(fc, fwb);
 875 #endif
 876 }
 877
 878 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)? -1 : \
 879     ((fwb)->end < (addr)) ? 1 : 0)
 880
 881 /*
 882  * To lookup bound process from IEEE1394 address.
 883  */
 884 struct fw_bind *
 885 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
 886 {
 887         u_int64_t addr;
 888         struct fw_bind *tfw, *r = NULL;
 889
 890         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 891         FW_GLOCK(fc);
 892         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 893                 if (BIND_CMP(addr, tfw) == 0) {
 894                         r = tfw;
 895                         break;
 896                 }
 897         FW_GUNLOCK(fc);
 898         return (r);
 899 }
 900
 901 /*
 902  * To bind IEEE1394 address block to process.
 903  */
 904 int
 905 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 906 {
 907         struct fw_bind *tfw, *prev = NULL;
 908         int r = 0;
 909
 910         if (fwb->start > fwb->end) {
 911                 printf("%s: invalid range\n", __func__);
 912                 return EINVAL;
 913         }
 914
 915         FW_GLOCK(fc);
 916         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 917                 if (fwb->end < tfw->start)
 918                         break;
 919                 prev = tfw;
 920         }
 921         if (prev == NULL)
 922                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 923         else if (prev->end < fwb->start)
 924                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 925         else {
 926                 printf("%s: bind failed\n", __func__);
 927                 r = EBUSY;
 928         }
 929         FW_GUNLOCK(fc);
 930         return (r);
 931 }
 932
 933 /*
 934  * To free IEEE1394 address block.
 935  */
 936 int
 937 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 938 {
 939 #if 0
 940         struct fw_xfer *xfer, *next;
 941 #endif
 942         struct fw_bind *tfw;
 943         int s;
 944
 945         s = splfw();
 946         FW_GLOCK(fc);
 947         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 948                 if (tfw == fwb) {
 949                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 950                         goto found;
 951                 }
 952
 953         printf("%s: no such binding\n", __func__);
 954         FW_GUNLOCK(fc);
 955         splx(s);
 956         return (1);
 957 found:
 958 #if 0
 959         /* shall we do this? */
 960         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 961                 next = STAILQ_NEXT(xfer, link);
 962                 fw_xfer_free(xfer);
 963         }
 964         STAILQ_INIT(&fwb->xferlist);
 965 #endif
 966         FW_GUNLOCK(fc);
 967
 968         splx(s);
 969         return 0;
 970 }
 971
 972 int
 973 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
 974     int slen, int rlen, int n,
 975     struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
 976 {
 977         int i, s;
 978         struct fw_xfer *xfer;
 979
 980         for (i = 0; i < n; i++) {
 981                 xfer = fw_xfer_alloc_buf(type, slen, rlen);
 982                 if (xfer == NULL)
 983                         return (i);
 984                 xfer->fc = fc;
 985                 xfer->sc = sc;
 986                 xfer->hand = hand;
 987                 s = splfw();
 988                 STAILQ_INSERT_TAIL(q, xfer, link);
 989                 splx(s);
 990         }
 991         return (n);
 992 }
 993
 994 void
 995 fw_xferlist_remove(struct fw_xferlist *q)
 996 {
 997         struct fw_xfer *xfer, *next;
 998
 999         for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
1000                 next = STAILQ_NEXT(xfer, link);
1001                 fw_xfer_free_buf(xfer);
1002         }
1003         STAILQ_INIT(q);
1004 }
1005 /*
1006  * dump packet header
1007  */
1008 static void
1009 fw_dump_hdr(struct fw_pkt *fp, char *prefix)
1010 {
1011         printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
1012             "src=0x%03x\n", prefix,
1013             fp->mode.hdr.dst & 0x3f,
1014             fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
1015             fp->mode.hdr.tcode, fp->mode.hdr.pri,
1016             fp->mode.hdr.src);
1017 }
1018
1019 /*
1020  * To free transaction label.
1021  */
1022 static void
1023 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
1024 {
1025         struct fw_xfer *txfer;
1026
1027         mtx_lock(&fc->tlabel_lock);
1028         if (xfer->tl < 0) {
1029                 mtx_unlock(&fc->tlabel_lock);
1030                 return;
1031         }
1032         /* make sure the label is allocated */
1033         STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
1034                 if (txfer == xfer)
1035                         break;
1036         if (txfer == NULL) {
1037                 printf("%s: the xfer is not in the queue "
1038                     "(tlabel=%d, flag=0x%x)\n",
1039                     __FUNCTION__, xfer->tl, xfer->flag);
1040                 fw_dump_hdr(&xfer->send.hdr, "send");
1041                 fw_dump_hdr(&xfer->recv.hdr, "recv");
1042                 kdb_backtrace();
1043                 mtx_unlock(&fc->tlabel_lock);
1044                 return;
1045         }
1046
1047         STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
1048         xfer->tl = -1;
1049         mtx_unlock(&fc->tlabel_lock);
1050         return;
1051 }
1052
1053 /*
1054  * To obtain XFER structure by transaction label.
1055  */
1056 static struct fw_xfer *
1057 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
1058 {
1059         struct fw_xfer *xfer;
1060         int s = splfw();
1061         int req;
1062
1063         mtx_lock(&fc->tlabel_lock);
1064         STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
1065                 if (xfer->send.hdr.mode.hdr.dst == node) {
1066                         mtx_unlock(&fc->tlabel_lock);
1067                         splx(s);
1068                         KASSERT(xfer->tl == tlabel,
1069                                 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel));
1070                         /* extra sanity check */
1071                         req = xfer->send.hdr.mode.hdr.tcode;
1072                         if (xfer->fc->tcode[req].valid_res != tcode) {
1073                                 printf("%s: invalid response tcode "
1074                                     "(0x%x for 0x%x)\n", __FUNCTION__,
1075                                     tcode, req);
1076                                 return (NULL);
1077                         }
1078
1079                         if (firewire_debug > 2)
1080                                 printf("fw_tl2xfer: found tl=%d\n", tlabel);
1081                         return (xfer);
1082                 }
1083         mtx_unlock(&fc->tlabel_lock);
1084         if (firewire_debug > 1)
1085                 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
1086         splx(s);
1087         return (NULL);
1088 }
1089
1090 /*
1091  * To allocate IEEE1394 XFER structure.
1092  */
1093 struct fw_xfer *
1094 fw_xfer_alloc(struct malloc_type *type)
1095 {
1096         struct fw_xfer *xfer;
1097
1098         xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
1099         if (xfer == NULL)
1100                 return xfer;
1101
1102         xfer->malloc = type;
1103         xfer->tl = -1;
1104
1105         return xfer;
1106 }
1107
1108 struct fw_xfer *
1109 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
1110 {
1111         struct fw_xfer *xfer;
1112
1113         xfer = fw_xfer_alloc(type);
1114         if (xfer == NULL)
1115                 return (NULL);
1116         xfer->send.pay_len = send_len;
1117         xfer->recv.pay_len = recv_len;
1118         if (send_len > 0) {
1119                 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
1120                 if (xfer->send.payload == NULL) {
1121                         fw_xfer_free(xfer);
1122                         return (NULL);
1123                 }
1124         }
1125         if (recv_len > 0) {
1126                 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1127                 if (xfer->recv.payload == NULL) {
1128                         if (xfer->send.payload != NULL)
1129                                 free(xfer->send.payload, type);
1130                         fw_xfer_free(xfer);
1131                         return (NULL);
1132                 }
1133         }
1134         return (xfer);
1135 }
1136
1137 /*
1138  * IEEE1394 XFER post process.
1139  */
1140 void
1141 fw_xfer_done(struct fw_xfer *xfer)
1142 {
1143         if (xfer->hand == NULL) {
1144                 printf("hand == NULL\n");
1145                 return;
1146         }
1147
1148         if (xfer->fc == NULL)
1149                 panic("fw_xfer_done: why xfer->fc is NULL?");
1150
1151         fw_tl_free(xfer->fc, xfer);
1152         xfer->hand(xfer);
1153 }
1154
1155 void
1156 fw_xfer_unload(struct fw_xfer *xfer)
1157 {
1158
1159         if (xfer == NULL)
1160                 return;
1161
1162         if (xfer->fc != NULL) {
1163                 FW_GLOCK(xfer->fc);
1164                 if (xfer->flag & FWXF_INQ) {
1165                         STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1166                         xfer->flag &= ~FWXF_INQ;
1167         #if 0
1168                         xfer->q->queued--;
1169         #endif
1170                 }
1171                 FW_GUNLOCK(xfer->fc);
1172
1173                 /*
1174                  * Ensure that any tlabel owner can't access this
1175                  * xfer after it's freed.
1176                  */
1177                 fw_tl_free(xfer->fc, xfer);
1178 #if 1
1179                 if (xfer->flag & FWXF_START)
1180                         /*
1181                          * This could happen if:
1182                          *  1. We call fwohci_arcv() before fwohci_txd().
1183                          *  2. firewire_watch() is called.
1184                          */
1185                         printf("fw_xfer_free FWXF_START\n");
1186 #endif
1187         }
1188         xfer->flag = FWXF_INIT;
1189         xfer->resp = 0;
1190 }
1191
1192 /*
1193  * To free IEEE1394 XFER structure.
1194  */
1195 void
1196 fw_xfer_free_buf(struct fw_xfer *xfer)
1197 {
1198         if (xfer == NULL) {
1199                 printf("%s: xfer == NULL\n", __func__);
1200                 return;
1201         }
1202         fw_xfer_unload(xfer);
1203         if (xfer->send.payload != NULL)
1204                 free(xfer->send.payload, xfer->malloc);
1205         if (xfer->recv.payload != NULL)
1206                 free(xfer->recv.payload, xfer->malloc);
1207         free(xfer, xfer->malloc);
1208 }
1209
1210 void
1211 fw_xfer_free(struct fw_xfer *xfer)
1212 {
1213         if (xfer == NULL) {
1214                 printf("%s: xfer == NULL\n", __func__);
1215                 return;
1216         }
1217         fw_xfer_unload(xfer);
1218         free(xfer, xfer->malloc);
1219 }
1220
1221 void
1222 fw_asy_callback_free(struct fw_xfer *xfer)
1223 {
1224 #if 0
1225         printf("asyreq done flag=0x%02x resp=%d\n",
1226                                 xfer->flag, xfer->resp);
1227 #endif
1228         fw_xfer_free(xfer);
1229 }
1230
1231 /*
1232  * To configure PHY.
1233  */
1234 static void
1235 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1236 {
1237         struct fw_xfer *xfer;
1238         struct fw_pkt *fp;
1239
1240         fc->status = FWBUSPHYCONF;
1241
1242         xfer = fw_xfer_alloc(M_FWXFER);
1243         if (xfer == NULL)
1244                 return;
1245         xfer->fc = fc;
1246         xfer->hand = fw_asy_callback_free;
1247
1248         fp = &xfer->send.hdr;
1249         fp->mode.ld[1] = 0;
1250         if (root_node >= 0)
1251                 fp->mode.ld[1] |= (1 << 23) | (root_node & 0x3f) << 24;
1252         if (gap_count >= 0)
1253                 fp->mode.ld[1] |= (1 << 22) | (gap_count & 0x3f) << 16;
1254         fp->mode.ld[2] = ~fp->mode.ld[1];
1255 /* XXX Dangerous, how to pass PHY packet to device driver */
1256         fp->mode.common.tcode |= FWTCODE_PHY;
1257
1258         if (firewire_debug)
1259                 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n",
1260                                         __func__, root_node, gap_count);
1261         fw_asyreq(fc, -1, xfer);
1262 }
1263
1264 /*
1265  * Dump self ID.
1266  */
1267 static void
1268 fw_print_sid(uint32_t sid)
1269 {
1270         union fw_self_id *s;
1271         s = (union fw_self_id *) &sid;
1272         if (s->p0.sequel) {
1273                 if (s->p1.sequence_num == FW_SELF_ID_PAGE0) {
1274                         printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d"
1275                             "p8:%d p9:%d p10:%d\n",
1276                             s->p1.phy_id, s->p1.port3, s->p1.port4,
1277                             s->p1.port5, s->p1.port6, s->p1.port7,
1278                             s->p1.port8, s->p1.port9, s->p1.port10);
1279                 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) {
1280                         printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n",
1281                             s->p2.phy_id, s->p2.port11, s->p2.port12,
1282                             s->p2.port13, s->p2.port14, s->p2.port15);
1283                 } else {
1284                         printf("node:%d Unknown Self ID Page number %d\n",
1285                             s->p1.phy_id, s->p1.sequence_num);
1286                 }
1287         } else {
1288                 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d"
1289                     " p0:%d p1:%d p2:%d i:%d m:%d\n",
1290                     s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1291                     s->p0.phy_speed, s->p0.contender,
1292                     s->p0.power_class, s->p0.port0, s->p0.port1,
1293                     s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1294         }
1295 }
1296
1297 /*
1298  * To receive self ID.
1299  */
1300 void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len)
1301 {
1302         uint32_t *p;
1303         union fw_self_id *self_id;
1304         u_int i, j, node, c_port = 0, i_branch = 0;
1305
1306         fc->sid_cnt = len / (sizeof(uint32_t) * 2);
1307         fc->max_node = fc->nodeid & 0x3f;
1308         CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
1309         fc->status = FWBUSCYMELECT;
1310         fc->topology_map->crc_len = 2;
1311         fc->topology_map->generation++;
1312         fc->topology_map->self_id_count = 0;
1313         fc->topology_map->node_count= 0;
1314         fc->speed_map->generation++;
1315         fc->speed_map->crc_len = 1 + (64 * 64 + 3) / 4;
1316         self_id = &fc->topology_map->self_id[0];
1317         for (i = 0; i < fc->sid_cnt; i++) {
1318                 if (sid[1] != ~sid[0]) {
1319                         device_printf(fc->bdev,
1320                             "%s: ERROR invalid self-id packet\n", __func__);
1321                         sid += 2;
1322                         continue;
1323                 }
1324                 *self_id = *((union fw_self_id *)sid);
1325                 fc->topology_map->crc_len++;
1326                 if (self_id->p0.sequel == 0) {
1327                         fc->topology_map->node_count++;
1328                         c_port = 0;
1329                         if (firewire_debug)
1330                                 fw_print_sid(sid[0]);
1331                         node = self_id->p0.phy_id;
1332                         if (fc->max_node < node)
1333                                 fc->max_node = self_id->p0.phy_id;
1334                         /* XXX I'm not sure this is the right speed_map */
1335                         fc->speed_map->speed[node][node] =
1336                             self_id->p0.phy_speed;
1337                         for (j = 0; j < node; j++) {
1338                                 fc->speed_map->speed[j][node] =
1339                                     fc->speed_map->speed[node][j] =
1340                                     min(fc->speed_map->speed[j][j],
1341                                         self_id->p0.phy_speed);
1342                         }
1343                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1344                           (self_id->p0.link_active && self_id->p0.contender))
1345                                 fc->irm = self_id->p0.phy_id;
1346                         if (self_id->p0.port0 >= 0x2)
1347                                 c_port++;
1348                         if (self_id->p0.port1 >= 0x2)
1349                                 c_port++;
1350                         if (self_id->p0.port2 >= 0x2)
1351                                 c_port++;
1352                 }
1353                 if (c_port > 2)
1354                         i_branch += (c_port - 2);
1355                 sid += 2;
1356                 self_id++;
1357                 fc->topology_map->self_id_count++;
1358         }
1359         /* CRC */
1360         fc->topology_map->crc = fw_crc16(
1361             (uint32_t *)&fc->topology_map->generation,
1362             fc->topology_map->crc_len * 4);
1363         fc->speed_map->crc = fw_crc16(
1364             (uint32_t *)&fc->speed_map->generation,
1365             fc->speed_map->crc_len * 4);
1366         /* byteswap and copy to CSR */
1367         p = (uint32_t *)fc->topology_map;
1368         for (i = 0; i <= fc->topology_map->crc_len; i++)
1369                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1370         p = (uint32_t *)fc->speed_map;
1371         CSRARC(fc, SPED_MAP) = htonl(*p++);
1372         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1373         /* don't byte-swap uint8_t array */
1374         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4);
1375
1376         fc->max_hop = fc->max_node - i_branch;
1377         device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n",
1378             fc->max_node + 1, fc->max_hop,
1379             (fc->irm == -1) ? "Not IRM capable" : "cable IRM",
1380             fc->irm, (fc->irm == fc->nodeid) ? " (me) " : "");
1381
1382         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1383                 if (fc->irm == fc->nodeid) {
1384                         fc->status = FWBUSMGRDONE;
1385                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1386                         fw_bmr(fc);
1387                 } else {
1388                         fc->status = FWBUSMGRELECT;
1389                         callout_reset(&fc->bmr_callout, hz / 8,
1390                             fw_try_bmr, fc);
1391                 }
1392         } else
1393                 fc->status = FWBUSMGRDONE;
1394
1395         callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc);
1396 }
1397
1398 /*
1399  * To probe devices on the IEEE1394 bus.
1400  */
1401 static void
1402 fw_bus_probe(void *arg)
1403 {
1404         struct firewire_comm *fc;
1405         struct fw_device *fwdev;
1406         int s;
1407
1408         s = splfw();
1409         fc = arg;
1410         fc->status = FWBUSEXPLORE;
1411
1412         /* Invalidate all devices, just after bus reset. */
1413         if (firewire_debug)
1414                 device_printf(fc->bdev, "%s:"
1415                         "iterate and invalidate all nodes\n",
1416                         __func__);
1417         STAILQ_FOREACH(fwdev, &fc->devices, link)
1418                 if (fwdev->status != FWDEVINVAL) {
1419                         fwdev->status = FWDEVINVAL;
1420                         fwdev->rcnt = 0;
1421                         if (firewire_debug)
1422                                 device_printf(fc->bdev, "%s:"
1423                                         "Invalidate Dev ID: %08x%08x\n",
1424                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1425                 } else {
1426                         if (firewire_debug)
1427                                 device_printf(fc->bdev, "%s:"
1428                                         "Dev ID: %08x%08x already invalid\n",
1429                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1430                 }
1431         splx(s);
1432
1433         wakeup(fc);
1434 }
1435
1436 static int
1437 fw_explore_read_quads(struct fw_device *fwdev, int offset,
1438     uint32_t *quad, int length)
1439 {
1440         struct fw_xfer *xfer;
1441         uint32_t tmp;
1442         int i, error;
1443
1444         for (i = 0; i < length; i++, offset += sizeof(uint32_t)) {
1445                 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff,
1446                     0xf0000000 | offset, &tmp, fw_xferwake);
1447                 if (xfer == NULL)
1448                         return (-1);
1449                 fw_xferwait(xfer);
1450
1451                 if (xfer->resp == 0)
1452                         quad[i] = ntohl(tmp);
1453
1454                 error = xfer->resp;
1455                 fw_xfer_free(xfer);
1456                 if (error)
1457                         return (error);
1458         }
1459         return (0);
1460 }
1461
1462
1463 static int
1464 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1465 {
1466         int err, i, off;
1467         struct csrdirectory *dir;
1468         struct csrreg *reg;
1469
1470         dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)];
1471         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1472             (uint32_t *)dir, 1);
1473         if (err)
1474                 return (-1);
1475
1476         offset += sizeof(uint32_t);
1477         reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)];
1478         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1479             (uint32_t *)reg, dir->crc_len);
1480         if (err)
1481                 return (-1);
1482
1483         /* XXX check CRC */
1484
1485         off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1486         if (fwdev->rommax < off)
1487                 fwdev->rommax = off;
1488
1489         if (recur == 0)
1490                 return (0);
1491
1492         for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) {
1493                 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
1494                         recur = 1;
1495                 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
1496                         recur = 0;
1497                 else
1498                         continue;
1499
1500                 off = offset + reg[i].val * sizeof(uint32_t);
1501                 if (off > CROMSIZE) {
1502                         printf("%s: invalid offset %d\n", __FUNCTION__, off);
1503                         return (-1);
1504                 }
1505                 err = fw_explore_csrblock(fwdev, off, recur);
1506                 if (err)
1507                         return (-1);
1508         }
1509         return (0);
1510 }
1511
1512 static int
1513 fw_explore_node(struct fw_device *dfwdev)
1514 {
1515         struct firewire_comm *fc;
1516         struct fw_device *fwdev, *pfwdev, *tfwdev;
1517         uint32_t *csr;
1518         struct csrhdr *hdr;
1519         struct bus_info *binfo;
1520         int err, node;
1521         uint32_t speed_test = 0;
1522
1523         fc = dfwdev->fc;
1524         csr = dfwdev->csrrom;
1525         node = dfwdev->dst;
1526
1527         /* First quad */
1528         err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
1529         if (err) {
1530                 dfwdev->status = FWDEVINVAL;
1531                 return (-1);
1532         }
1533         hdr = (struct csrhdr *)&csr[0];
1534         if (hdr->info_len != 4) {
1535                 if (firewire_debug)
1536                         device_printf(fc->bdev,
1537                             "%s: node%d: wrong bus info len(%d)\n",
1538                             __func__, node, hdr->info_len);
1539                 dfwdev->status = FWDEVINVAL;
1540                 return (-1);
1541         }
1542
1543         /* bus info */
1544         err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1545         if (err) {
1546                 dfwdev->status = FWDEVINVAL;
1547                 return (-1);
1548         }
1549         binfo = (struct bus_info *)&csr[1];
1550         if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1551                 dfwdev->status = FWDEVINVAL;
1552                 return (-1);
1553         }
1554
1555         if (firewire_debug)
1556                 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n"
1557                     "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) "
1558                     "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) "
1559                     "generation(%d) link_spd(%d)\n",
1560                     __func__, node,
1561                     binfo->irmc, binfo->cmc, binfo->isc,
1562                     binfo->bmc, binfo->pmc, binfo->cyc_clk_acc,
1563                     binfo->max_rec, binfo->max_rom,
1564                     binfo->generation, binfo->link_spd);
1565
1566         STAILQ_FOREACH(fwdev, &fc->devices, link)
1567                 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1568                         break;
1569         if (fwdev == NULL) {
1570                 /* new device */
1571                 fwdev = malloc(sizeof(struct fw_device), M_FW,
1572                     M_NOWAIT | M_ZERO);
1573                 if (fwdev == NULL) {
1574                         device_printf(fc->bdev, "%s: node%d: no memory\n",
1575                                         __func__, node);
1576                         return (-1);
1577                 }
1578                 fwdev->fc = fc;
1579                 fwdev->eui = binfo->eui64;
1580                 fwdev->dst = dfwdev->dst;
1581                 fwdev->maxrec = dfwdev->maxrec;
1582                 fwdev->status = dfwdev->status;
1583
1584                 /*
1585                  * Pre-1394a-2000 didn't have link_spd in
1586                  * the Bus Info block, so try and use the
1587                  * speed map value.
1588                  * 1394a-2000 compliant devices only use
1589                  * the Bus Info Block link spd value, so
1590                  * ignore the speed map altogether. SWB
1591                  */
1592                 if (binfo->link_spd == FWSPD_S100 /* 0 */) {
1593                         device_printf(fc->bdev, "%s: "
1594                             "Pre 1394a-2000 detected\n", __func__);
1595                         fwdev->speed = fc->speed_map->speed[fc->nodeid][node];
1596                 } else
1597                         fwdev->speed = binfo->link_spd;
1598                 /*
1599                  * Test this speed with a read to the CSRROM.
1600                  * If it fails, slow down the speed and retry.
1601                  */
1602                 while (fwdev->speed > FWSPD_S100 /* 0 */) {
1603                         err = fw_explore_read_quads(fwdev, CSRROMOFF,
1604                             &speed_test, 1);
1605                         if (err) {
1606                                 device_printf(fc->bdev,
1607                                     "%s: fwdev->speed(%s) decremented due to negotiation\n",
1608                                     __func__, linkspeed[fwdev->speed]);
1609                                 fwdev->speed--;
1610                         } else
1611                                 break;
1612
1613                 }
1614
1615                 /*
1616                  * If the fwdev is not found in the
1617                  * fc->devices TAILQ, then we will add it.
1618                  */
1619                 pfwdev = NULL;
1620                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1621                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1622                                 (tfwdev->eui.hi == fwdev->eui.hi &&
1623                                 tfwdev->eui.lo > fwdev->eui.lo))
1624                                 break;
1625                         pfwdev = tfwdev;
1626                 }
1627                 if (pfwdev == NULL)
1628                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1629                 else
1630                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1631         } else {
1632                 fwdev->dst = node;
1633                 fwdev->status = FWDEVINIT;
1634                 /* unchanged ? */
1635                 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) {
1636                         if (firewire_debug)
1637                                 device_printf(fc->dev,
1638                                     "node%d: crom unchanged\n", node);
1639                         return (0);
1640                 }
1641         }
1642
1643         bzero(&fwdev->csrrom[0], CROMSIZE);
1644
1645         /* copy first quad and bus info block */
1646         bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5);
1647         fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1648
1649         err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1650
1651         if (err) {
1652                 if (firewire_debug)
1653                         device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n",
1654                                         __func__, err);
1655                 fwdev->status = FWDEVINVAL;
1656                 fwdev->csrrom[0] = 0;
1657         }
1658         return (err);
1659
1660 }
1661
1662 /*
1663  * Find the self_id packet for a node, ignoring sequels.
1664  */
1665 static union fw_self_id *
1666 fw_find_self_id(struct firewire_comm *fc, int node)
1667 {
1668         uint32_t i;
1669         union fw_self_id *s;
1670
1671         for (i = 0; i < fc->topology_map->self_id_count; i++) {
1672                 s = &fc->topology_map->self_id[i];
1673                 if (s->p0.sequel)
1674                         continue;
1675                 if (s->p0.phy_id == node)
1676                         return s;
1677         }
1678         return 0;
1679 }
1680
1681 static void
1682 fw_explore(struct firewire_comm *fc)
1683 {
1684         int node, err, s, i, todo, todo2, trys;
1685         char nodes[63];
1686         struct fw_device dfwdev;
1687         union fw_self_id *fwsid;
1688
1689         todo = 0;
1690         /* setup dummy fwdev */
1691         dfwdev.fc = fc;
1692         dfwdev.speed = 0;
1693         dfwdev.maxrec = 8; /* 512 */
1694         dfwdev.status = FWDEVINIT;
1695
1696         for (node = 0; node <= fc->max_node; node++) {
1697                 /* We don't probe myself and linkdown nodes */
1698                 if (node == fc->nodeid) {
1699                         if (firewire_debug)
1700                                 device_printf(fc->bdev, "%s:"
1701                                     "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n",
1702                                     __func__, node, fc->nodeid, fc->max_node);
1703                         continue;
1704                 } else if (firewire_debug) {
1705                         device_printf(fc->bdev, "%s:"
1706                             "node(%d) fc->max_node(%d) found\n",
1707                             __func__, node, fc->max_node);
1708                 }
1709                 fwsid = fw_find_self_id(fc, node);
1710                 if (!fwsid || !fwsid->p0.link_active) {
1711                         if (firewire_debug)
1712                                 device_printf(fc->bdev,
1713                                     "%s: node%d: link down\n",
1714                                     __func__, node);
1715                         continue;
1716                 }
1717                 nodes[todo++] = node;
1718         }
1719
1720         s = splfw();
1721         for (trys = 0; todo > 0 && trys < 3; trys++) {
1722                 todo2 = 0;
1723                 for (i = 0; i < todo; i++) {
1724                         dfwdev.dst = nodes[i];
1725                         err = fw_explore_node(&dfwdev);
1726                         if (err)
1727                                 nodes[todo2++] = nodes[i];
1728                         if (firewire_debug)
1729                                 device_printf(fc->bdev,
1730                                     "%s: node %d, err = %d\n",
1731                                     __func__, node, err);
1732                 }
1733                 todo = todo2;
1734         }
1735         splx(s);
1736 }
1737
1738 static void
1739 fw_bus_probe_thread(void *arg)
1740 {
1741         struct firewire_comm *fc;
1742
1743         fc = arg;
1744
1745         mtx_lock(&fc->wait_lock);
1746         while (fc->status != FWBUSDETACH) {
1747                 if (fc->status == FWBUSEXPLORE) {
1748                         mtx_unlock(&fc->wait_lock);
1749                         fw_explore(fc);
1750                         fc->status = FWBUSEXPDONE;
1751                         if (firewire_debug)
1752                                 printf("bus_explore done\n");
1753                         fw_attach_dev(fc);
1754                         mtx_lock(&fc->wait_lock);
1755                 }
1756                 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0);
1757         }
1758         mtx_unlock(&fc->wait_lock);
1759         kproc_exit(0);
1760 }
1761
1762 /*
1763  * To attach sub-devices layer onto IEEE1394 bus.
1764  */
1765 static void
1766 fw_attach_dev(struct firewire_comm *fc)
1767 {
1768         struct fw_device *fwdev, *next;
1769         int i, err;
1770         device_t *devlistp;
1771         int devcnt;
1772         struct firewire_dev_comm *fdc;
1773
1774         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1775                 next = STAILQ_NEXT(fwdev, link);
1776                 if (fwdev->status == FWDEVINIT) {
1777                         fwdev->status = FWDEVATTACHED;
1778                 } else if (fwdev->status == FWDEVINVAL) {
1779                         fwdev->rcnt++;
1780                         if (firewire_debug)
1781                                 device_printf(fc->bdev, "%s:"
1782                                     "fwdev->rcnt(%d), hold_count(%d)\n",
1783                                     __func__, fwdev->rcnt, hold_count);
1784                         if (fwdev->rcnt > hold_count) {
1785                                 /*
1786                                  * Remove devices which have not been seen
1787                                  * for a while.
1788                                  */
1789                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1790                                     link);
1791                                 free(fwdev, M_FW);
1792                         }
1793                 }
1794         }
1795
1796         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1797         if (err == 0) {
1798                 for (i = 0; i < devcnt; i++) {
1799                         if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
1800                                 fdc = device_get_softc(devlistp[i]);
1801                                 if (fdc->post_explore != NULL)
1802                                         fdc->post_explore(fdc);
1803                         }
1804                 }
1805                 free(devlistp, M_TEMP);
1806         }
1807
1808         return;
1809 }
1810
1811 /*
1812  * To allocate unique transaction label.
1813  */
1814 static int
1815 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1816 {
1817         u_int dst, new_tlabel;
1818         struct fw_xfer *txfer;
1819         int s;
1820
1821         dst = xfer->send.hdr.mode.hdr.dst & 0x3f;
1822         s = splfw();
1823         mtx_lock(&fc->tlabel_lock);
1824         new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f;
1825         STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
1826                 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst)
1827                         break;
1828         if (txfer == NULL) {
1829                 fc->last_tlabel[dst] = new_tlabel;
1830                 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
1831                 mtx_unlock(&fc->tlabel_lock);
1832                 splx(s);
1833                 xfer->tl = new_tlabel;
1834                 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
1835                 if (firewire_debug > 1)
1836                         printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel);
1837                 return (new_tlabel);
1838         }
1839         mtx_unlock(&fc->tlabel_lock);
1840         splx(s);
1841
1842         if (firewire_debug > 1)
1843                 printf("fw_get_tlabel: no free tlabel\n");
1844         return (-1);
1845 }
1846
1847 static void
1848 fw_rcv_copy(struct fw_rcv_buf *rb)
1849 {
1850         struct fw_pkt *pkt;
1851         u_char *p;
1852         struct tcode_info *tinfo;
1853         u_int res, i, len, plen;
1854
1855         rb->xfer->recv.spd = rb->spd;
1856
1857         pkt = (struct fw_pkt *)rb->vec->iov_base;
1858         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1859
1860         /* Copy header */
1861         p = (u_char *)&rb->xfer->recv.hdr;
1862         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1863         rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
1864         rb->vec->iov_len -= tinfo->hdr_len;
1865
1866         /* Copy payload */
1867         p = (u_char *)rb->xfer->recv.payload;
1868         res = rb->xfer->recv.pay_len;
1869
1870         /* special handling for RRESQ */
1871         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1872             p != NULL && res >= sizeof(uint32_t)) {
1873                 *(uint32_t *)p = pkt->mode.rresq.data;
1874                 rb->xfer->recv.pay_len = sizeof(uint32_t);
1875                 return;
1876         }
1877
1878         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1879                 return;
1880
1881         plen = pkt->mode.rresb.len;
1882
1883         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1884                 len = MIN(rb->vec->iov_len, plen);
1885                 if (res < len) {
1886                         device_printf(rb->fc->bdev, "%s:"
1887                                 " rcv buffer(%d) is %d bytes short.\n",
1888                                 __func__, rb->xfer->recv.pay_len, len - res);
1889                         len = res;
1890                 }
1891                 bcopy(rb->vec->iov_base, p, len);
1892                 p += len;
1893                 res -= len;
1894                 plen -= len;
1895                 if (res == 0 || plen == 0)
1896                         break;
1897         }
1898         rb->xfer->recv.pay_len -= res;
1899 }
1900
1901 /*
1902  * Generic packet receiving process.
1903  */
1904 void
1905 fw_rcv(struct fw_rcv_buf *rb)
1906 {
1907         struct fw_pkt *fp, *resfp;
1908         struct fw_bind *bind;
1909         int tcode;
1910         int i, len, oldstate;
1911 #if 0
1912         {
1913                 uint32_t *qld;
1914                 int i;
1915                 qld = (uint32_t *)buf;
1916                 printf("spd %d len:%d\n", spd, len);
1917                 for (i = 0; i <= len && i < 32; i+= 4) {
1918                         printf("0x%08x ", ntohl(qld[i/4]));
1919                         if ((i % 16) == 15) printf("\n");
1920                 }
1921                 if ((i % 16) != 15) printf("\n");
1922         }
1923 #endif
1924         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1925         tcode = fp->mode.common.tcode;
1926         switch (tcode) {
1927         case FWTCODE_WRES:
1928         case FWTCODE_RRESQ:
1929         case FWTCODE_RRESB:
1930         case FWTCODE_LRES:
1931                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1932                                 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode);
1933                 if (rb->xfer == NULL) {
1934                         device_printf(rb->fc->bdev, "%s: unknown response "
1935                             "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1936                             __func__,
1937                             tcode_str[tcode], tcode,
1938                             fp->mode.hdr.src,
1939                             fp->mode.hdr.tlrt >> 2,
1940                             fp->mode.hdr.tlrt & 3,
1941                             fp->mode.rresq.data);
1942 #if 0
1943                         printf("try ad-hoc work around!!\n");
1944                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1945                             (fp->mode.hdr.tlrt >> 2)^3);
1946                         if (rb->xfer == NULL) {
1947                                 printf("no use...\n");
1948                                 return;
1949                         }
1950 #else
1951                         return;
1952 #endif
1953                 }
1954                 fw_rcv_copy(rb);
1955                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1956                         rb->xfer->resp = EIO;
1957                 else
1958                         rb->xfer->resp = 0;
1959                 /* make sure the packet is drained in AT queue */
1960                 oldstate = rb->xfer->flag;
1961                 rb->xfer->flag = FWXF_RCVD;
1962                 switch (oldstate) {
1963                 case FWXF_SENT:
1964                         fw_xfer_done(rb->xfer);
1965                         break;
1966                 case FWXF_START:
1967 #if 0
1968                         if (firewire_debug)
1969                                 printf("not sent yet tl=%x\n", rb->xfer->tl);
1970 #endif
1971                         break;
1972                 default:
1973                         device_printf(rb->fc->bdev, "%s: "
1974                             "unexpected flag 0x%02x\n", __func__,
1975                             rb->xfer->flag);
1976                 }
1977                 return;
1978         case FWTCODE_WREQQ:
1979         case FWTCODE_WREQB:
1980         case FWTCODE_RREQQ:
1981         case FWTCODE_RREQB:
1982         case FWTCODE_LREQ:
1983                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1984                     fp->mode.rreqq.dest_lo);
1985                 if (bind == NULL) {
1986                         device_printf(rb->fc->bdev, "%s: "
1987                             "Unknown service addr 0x%04x:0x%08x %s(%x)"
1988                             " src=0x%x data=%x\n",
1989                             __func__,
1990                             fp->mode.wreqq.dest_hi,
1991                             fp->mode.wreqq.dest_lo,
1992                             tcode_str[tcode], tcode,
1993                             fp->mode.hdr.src,
1994                             ntohl(fp->mode.wreqq.data));
1995
1996                         if (rb->fc->status == FWBUSINIT) {
1997                                 device_printf(rb->fc->bdev,
1998                                     "%s: cannot respond(bus reset)!\n",
1999                                     __func__);
2000                                 return;
2001                         }
2002                         rb->xfer = fw_xfer_alloc(M_FWXFER);
2003                         if (rb->xfer == NULL) {
2004                                 return;
2005                         }
2006                         rb->xfer->send.spd = rb->spd;
2007                         rb->xfer->send.pay_len = 0;
2008                         resfp = &rb->xfer->send.hdr;
2009                         switch (tcode) {
2010                         case FWTCODE_WREQQ:
2011                         case FWTCODE_WREQB:
2012                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
2013                                 break;
2014                         case FWTCODE_RREQQ:
2015                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
2016                                 break;
2017                         case FWTCODE_RREQB:
2018                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
2019                                 break;
2020                         case FWTCODE_LREQ:
2021                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
2022                                 break;
2023                         }
2024                         resfp->mode.hdr.dst = fp->mode.hdr.src;
2025                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
2026                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
2027                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
2028                         resfp->mode.rresb.extcode = 0;
2029                         resfp->mode.rresb.len = 0;
2030 /*
2031                         rb->xfer->hand = fw_xferwake;
2032 */
2033                         rb->xfer->hand = fw_xfer_free;
2034                         if (fw_asyreq(rb->fc, -1, rb->xfer))
2035                                 fw_xfer_free(rb->xfer);
2036                         return;
2037                 }
2038                 len = 0;
2039                 for (i = 0; i < rb->nvec; i++)
2040                         len += rb->vec[i].iov_len;
2041                 rb->xfer = STAILQ_FIRST(&bind->xferlist);
2042                 if (rb->xfer == NULL) {
2043                         device_printf(rb->fc->bdev, "%s: "
2044                             "Discard a packet for this bind.\n", __func__);
2045                         return;
2046                 }
2047                 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
2048                 fw_rcv_copy(rb);
2049                 rb->xfer->hand(rb->xfer);
2050                 return;
2051 #if 0 /* shouldn't happen ?? or for GASP */
2052         case FWTCODE_STREAM:
2053         {
2054                 struct fw_xferq *xferq;
2055
2056                 xferq = rb->fc->ir[sub];
2057 #if 0
2058                 printf("stream rcv dma %d len %d off %d spd %d\n",
2059                         sub, len, off, spd);
2060 #endif
2061                 if (xferq->queued >= xferq->maxq) {
2062                         printf("receive queue is full\n");
2063                         return;
2064                 }
2065                 /* XXX get xfer from xfer queue, we don't need copy for
2066                         per packet mode */
2067                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
2068                                                 vec[0].iov_len);
2069                 if (rb->xfer == NULL)
2070                         return;
2071                 fw_rcv_copy(rb)
2072                 s = splfw();
2073                 xferq->queued++;
2074                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
2075                 splx(s);
2076                 sc = device_get_softc(rb->fc->bdev);
2077                 if (SEL_WAITING(&xferq->rsel))
2078                         selwakeuppri(&xferq->rsel, FWPRI);
2079                 if (xferq->flag & FWXFERQ_WAKEUP) {
2080                         xferq->flag &= ~FWXFERQ_WAKEUP;
2081                         wakeup((caddr_t)xferq);
2082                 }
2083                 if (xferq->flag & FWXFERQ_HANDLER) {
2084                         xferq->hand(xferq);
2085                 }
2086                 return;
2087                 break;
2088         }
2089 #endif
2090         default:
2091                 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n",
2092                     __func__, tcode);
2093                 break;
2094         }
2095 }
2096
2097 /*
2098  * Post process for Bus Manager election process.
2099  */
2100 static void
2101 fw_try_bmr_callback(struct fw_xfer *xfer)
2102 {
2103         struct firewire_comm *fc;
2104         int bmr;
2105
2106         if (xfer == NULL)
2107                 return;
2108         fc = xfer->fc;
2109         if (xfer->resp != 0)
2110                 goto error;
2111         if (xfer->recv.payload == NULL)
2112                 goto error;
2113         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2114                 goto error;
2115
2116         bmr = ntohl(xfer->recv.payload[0]);
2117         if (bmr == 0x3f)
2118                 bmr = fc->nodeid;
2119
2120         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2121         fw_xfer_free_buf(xfer);
2122         fw_bmr(fc);
2123         return;
2124
2125 error:
2126         device_printf(fc->bdev, "bus manager election failed\n");
2127         fw_xfer_free_buf(xfer);
2128 }
2129
2130
2131 /*
2132  * To candidate Bus Manager election process.
2133  */
2134 static void
2135 fw_try_bmr(void *arg)
2136 {
2137         struct fw_xfer *xfer;
2138         struct firewire_comm *fc = arg;
2139         struct fw_pkt *fp;
2140         int err = 0;
2141
2142         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2143         if (xfer == NULL)
2144                 return;
2145         xfer->send.spd = 0;
2146         fc->status = FWBUSMGRELECT;
2147
2148         fp = &xfer->send.hdr;
2149         fp->mode.lreq.dest_hi = 0xffff;
2150         fp->mode.lreq.tlrt = 0;
2151         fp->mode.lreq.tcode = FWTCODE_LREQ;
2152         fp->mode.lreq.pri = 0;
2153         fp->mode.lreq.src = 0;
2154         fp->mode.lreq.len = 8;
2155         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2156         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2157         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2158         xfer->send.payload[0] = htonl(0x3f);
2159         xfer->send.payload[1] = htonl(fc->nodeid);
2160         xfer->hand = fw_try_bmr_callback;
2161
2162         err = fw_asyreq(fc, -1, xfer);
2163         if (err) {
2164                 fw_xfer_free_buf(xfer);
2165                 return;
2166         }
2167         return;
2168 }
2169
2170 #ifdef FW_VMACCESS
2171 /*
2172  * Software implementation for physical memory block access.
2173  * XXX:Too slow, useful for debug purpose only.
2174  */
2175 static void
2176 fw_vmaccess(struct fw_xfer *xfer)
2177 {
2178         struct fw_pkt *rfp, *sfp = NULL;
2179         uint32_t *ld = (uint32_t *)xfer->recv.buf;
2180
2181         printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2182             xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]),
2183             ntohl(ld[3]));
2184         printf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]),
2185             ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2186         if (xfer->resp != 0) {
2187                 fw_xfer_free(xfer);
2188                 return;
2189         }
2190         if (xfer->recv.buf == NULL) {
2191                 fw_xfer_free(xfer);
2192                 return;
2193         }
2194         rfp = (struct fw_pkt *)xfer->recv.buf;
2195         switch (rfp->mode.hdr.tcode) {
2196                 /* XXX need fix for 64bit arch */
2197                 case FWTCODE_WREQB:
2198                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2199                         xfer->send.len = 12;
2200                         sfp = (struct fw_pkt *)xfer->send.buf;
2201                         bcopy(rfp->mode.wreqb.payload,
2202                             (caddr_t)ntohl(rfp->mode.wreqb.dest_lo),s
2203                             ntohs(rfp->mode.wreqb.len));
2204                         sfp->mode.wres.tcode = FWTCODE_WRES;
2205                         sfp->mode.wres.rtcode = 0;
2206                         break;
2207                 case FWTCODE_WREQQ:
2208                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2209                         xfer->send.len = 12;
2210                         sfp->mode.wres.tcode = FWTCODE_WRES;
2211                         *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) =
2212                             rfp->mode.wreqq.data;
2213                         sfp->mode.wres.rtcode = 0;
2214                         break;
2215                 case FWTCODE_RREQB:
2216                         xfer->send.buf = malloc(16 + rfp->mode.rreqb.len,
2217                             M_FW, M_NOWAIT);
2218                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2219                         sfp = (struct fw_pkt *)xfer->send.buf;
2220                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2221                             sfp->mode.rresb.payload,
2222                             ntohs(rfp->mode.rreqb.len));
2223                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2224                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2225                         sfp->mode.rresb.rtcode = 0;
2226                         sfp->mode.rresb.extcode = 0;
2227                         break;
2228                 case FWTCODE_RREQQ:
2229                         xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2230                         xfer->send.len = 16;
2231                         sfp = (struct fw_pkt *)xfer->send.buf;
2232                         sfp->mode.rresq.data =
2233                             *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2234                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2235                         sfp->mode.rresb.rtcode = 0;
2236                         break;
2237                 default:
2238                         fw_xfer_free(xfer);
2239                         return;
2240         }
2241         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2242         xfer->dst = ntohs(rfp->mode.hdr.src);
2243         xfer->hand = fw_xfer_free;
2244
2245         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2246         sfp->mode.hdr.pri = 0;
2247
2248         fw_asyreq(xfer->fc, -1, xfer);
2249 /**/
2250         return;
2251 }
2252 #endif
2253
2254 /*
2255  * CRC16 check-sum for IEEE1394 register blocks.
2256  */
2257 uint16_t
2258 fw_crc16(uint32_t *ptr, uint32_t len)
2259 {
2260         uint32_t i, sum, crc = 0;
2261         int shift;
2262         len = (len + 3) & ~3;
2263         for (i = 0; i < len; i += 4) {
2264                 for (shift = 28; shift >= 0; shift -= 4) {
2265                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2266                         crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum;
2267                 }
2268                 crc &= 0xffff;
2269         }
2270         return ((uint16_t) crc);
2271 }
2272
2273 /*
2274  * Find the root node, if it is not
2275  * Cycle Master Capable, then we should
2276  * override this and become the Cycle
2277  * Master
2278  */
2279 static int
2280 fw_bmr(struct firewire_comm *fc)
2281 {
2282         struct fw_device fwdev;
2283         union fw_self_id *self_id;
2284         int cmstr;
2285         uint32_t quad;
2286
2287         /* Check to see if the current root node is cycle master capable */
2288         self_id = fw_find_self_id(fc, fc->max_node);
2289         if (fc->max_node > 0) {
2290                 /* XXX check cmc bit of businfo block rather than contender */
2291                 if (self_id->p0.link_active && self_id->p0.contender)
2292                         cmstr = fc->max_node;
2293                 else {
2294                         device_printf(fc->bdev,
2295                             "root node is not cycle master capable\n");
2296                         /* XXX shall we be the cycle master? */
2297                         cmstr = fc->nodeid;
2298                         /* XXX need bus reset */
2299                 }
2300         } else
2301                 cmstr = -1;
2302
2303         device_printf(fc->bdev, "bus manager %d %s\n",
2304                 CSRARC(fc, BUS_MGR_ID),
2305                 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : "");
2306         if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2307                 /* We are not the bus manager */
2308                 return (0);
2309         }
2310
2311         /* Optimize gapcount */
2312         if (fc->max_hop <= MAX_GAPHOP)
2313                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2314         /* If we are the cycle master, nothing to do */
2315         if (cmstr == fc->nodeid || cmstr == -1)
2316                 return 0;
2317         /* Bus probe has not finished, make dummy fwdev for cmstr */
2318         bzero(&fwdev, sizeof(fwdev));
2319         fwdev.fc = fc;
2320         fwdev.dst = cmstr;
2321         fwdev.speed = 0;
2322         fwdev.maxrec = 8; /* 512 */
2323         fwdev.status = FWDEVINIT;
2324         /* Set cmstr bit on the cycle master */
2325         quad = htonl(1 << 8);
2326         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2327             0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2328
2329         return 0;
2330 }
2331
2332 int
2333 fw_open_isodma(struct firewire_comm *fc, int tx)
2334 {
2335         struct fw_xferq **xferqa;
2336         struct fw_xferq *xferq;
2337         int i;
2338
2339         if (tx)
2340                 xferqa = &fc->it[0];
2341         else
2342                 xferqa = &fc->ir[0];
2343
2344         FW_GLOCK(fc);
2345         for (i = 0; i < fc->nisodma; i++) {
2346                 xferq = xferqa[i];
2347                 if ((xferq->flag & FWXFERQ_OPEN) == 0) {
2348                         xferq->flag |= FWXFERQ_OPEN;
2349                         break;
2350                 }
2351         }
2352         if (i == fc->nisodma) {
2353                 printf("no free dma channel (tx=%d)\n", tx);
2354                 i = -1;
2355         }
2356         FW_GUNLOCK(fc);
2357         return (i);
2358 }
2359
2360 static int
2361 fw_modevent(module_t mode, int type, void *data)
2362 {
2363         int err = 0;
2364         static eventhandler_tag fwdev_ehtag = NULL;
2365
2366         switch (type) {
2367         case MOD_LOAD:
2368                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2369                     fwdev_clone, 0, 1000);
2370                 break;
2371         case MOD_UNLOAD:
2372                 if (fwdev_ehtag != NULL)
2373                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2374                 break;
2375         case MOD_SHUTDOWN:
2376                 break;
2377         default:
2378                 return (EOPNOTSUPP);
2379         }
2380         return (err);
2381 }
2382
2383
2384 DRIVER_MODULE(firewire, fwohci, firewire_driver, firewire_devclass,
2385     fw_modevent,0);
2386 MODULE_VERSION(firewire, 1);