sys/bus/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: src/sys/dev/firewire/firewire.c,v 1.68 2004/01/08 14:58:09 simokawa Exp $
  35  * $DragonFly: src/sys/bus/firewire/firewire.c,v 1.21 2008/01/06 16:55:49 swildner Exp $
  36  *
  37  */
  38
  39 #include <sys/param.h>
  40 #include <sys/systm.h>
  41 #include <sys/types.h>
  42
  43 #include <sys/kernel.h>
  44 #include <sys/malloc.h>
  45 #include <sys/conf.h>
  46 #include <sys/bus.h>            /* used by smbus and newbus */
  47 #include <sys/sysctl.h>
  48 #include <sys/thread2.h>
  49
  50 #if defined(__DragonFly__) || __FreeBSD_version < 500000
  51 #include <machine/clock.h>      /* for DELAY() */
  52 #endif
  53
  54 #ifdef __DragonFly__
  55 #include "firewire.h"
  56 #include "firewirereg.h"
  57 #include "fwmem.h"
  58 #include "iec13213.h"
  59 #include "iec68113.h"
  60 #else
  61 #include <dev/firewire/firewire.h>
  62 #include <dev/firewire/firewirereg.h>
  63 #include <dev/firewire/fwmem.h>
  64 #include <dev/firewire/iec13213.h>
  65 #include <dev/firewire/iec68113.h>
  66 #endif
  67
  68 struct crom_src_buf {
  69         struct crom_src src;
  70         struct crom_chunk root;
  71         struct crom_chunk vendor;
  72         struct crom_chunk hw;
  73 };
  74
  75 int firewire_debug=0, try_bmr=1, hold_count=3;
  76 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  77         "FireWire driver debug flag");
  78 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
  79 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  80         "Try to be a bus manager");
  81 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  82         "Number of count of bus resets for removing lost device information");
  83
  84 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  85 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  86
  87 #define FW_MAXASYRTY 4
  88
  89 devclass_t firewire_devclass;
  90
  91 static int firewire_probe       (device_t);
  92 static int firewire_attach      (device_t);
  93 static int firewire_detach      (device_t);
  94 static int firewire_resume      (device_t);
  95 #if 0
  96 static int firewire_shutdown    (device_t);
  97 #endif
  98 static device_t firewire_add_child (device_t, device_t, int, const char *, int);
  99 static void fw_try_bmr (void *);
 100 static void fw_try_bmr_callback (struct fw_xfer *);
 101 static void fw_asystart (struct fw_xfer *);
 102 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
 103 static void fw_bus_probe (struct firewire_comm *);
 104 static void fw_bus_explore (struct firewire_comm *);
 105 static void fw_bus_explore_callback (struct fw_xfer *);
 106 static void fw_attach_dev (struct firewire_comm *);
 107 #ifdef FW_VMACCESS
 108 static void fw_vmaccess (struct fw_xfer *);
 109 #endif
 110 struct fw_xfer *asyreqq (struct firewire_comm *, u_int8_t, u_int8_t, u_int8_t,
 111         u_int32_t, u_int32_t, void (*)(struct fw_xfer *));
 112 static int fw_bmr (struct firewire_comm *);
 113
 114 /*
 115  * note: bus_generic_identify() will automatically install a "firewire"
 116  * device under any attached fwohci device.
 117  */
 118 static device_method_t firewire_methods[] = {
 119         /* Device interface */
 120         DEVMETHOD(device_identify,      bus_generic_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
 165         crit_enter();
 166         STAILQ_FOREACH(fwdev, &fc->devices, link)
 167                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 168                         break;
 169         crit_exit();
 170
 171         return fwdev;
 172 }
 173
 174 /*
 175  * Lookup fwdev by EUI64.
 176  */
 177 struct fw_device *
 178 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
 179 {
 180         struct fw_device *fwdev;
 181
 182         crit_enter();
 183         STAILQ_FOREACH(fwdev, &fc->devices, link)
 184                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 185                         break;
 186         crit_exit();
 187
 188         if(fwdev == NULL) return NULL;
 189         if(fwdev->status == FWDEVINVAL) return NULL;
 190         return fwdev;
 191 }
 192
 193 /*
 194  * Async. request procedure for userland application.
 195  */
 196 int
 197 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
 198 {
 199         int err = 0;
 200         struct fw_xferq *xferq;
 201         int tl = 0, len;
 202         struct fw_pkt *fp;
 203         int tcode;
 204         struct tcode_info *info;
 205
 206         if(xfer == NULL) return EINVAL;
 207         if(xfer->act.hand == NULL){
 208                 kprintf("act.hand == NULL\n");
 209                 return EINVAL;
 210         }
 211         fp = &xfer->send.hdr;
 212
 213         tcode = fp->mode.common.tcode & 0xf;
 214         info = &fc->tcode[tcode];
 215         if (info->flag == 0) {
 216                 kprintf("invalid tcode=%x\n", tcode);
 217                 return EINVAL;
 218         }
 219         if (info->flag & FWTI_REQ)
 220                 xferq = fc->atq;
 221         else
 222                 xferq = fc->ats;
 223         len = info->hdr_len;
 224         if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
 225                 kprintf("send.pay_len > maxrec\n");
 226                 return EINVAL;
 227         }
 228         if (info->flag & FWTI_BLOCK_STR)
 229                 len = fp->mode.stream.len;
 230         else if (info->flag & FWTI_BLOCK_ASY)
 231                 len = fp->mode.rresb.len;
 232         else
 233                 len = 0;
 234         if (len != xfer->send.pay_len){
 235                 kprintf("len(%d) != send.pay_len(%d) %s(%x)\n",
 236                     len, xfer->send.pay_len, tcode_str[tcode], tcode);
 237                 return EINVAL;
 238         }
 239
 240         if(xferq->start == NULL){
 241                 kprintf("xferq->start == NULL\n");
 242                 return EINVAL;
 243         }
 244         if(!(xferq->queued < xferq->maxq)){
 245                 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
 246                         xferq->queued);
 247                 return EINVAL;
 248         }
 249
 250         microtime(&xfer->tv);
 251         if (info->flag & FWTI_TLABEL) {
 252                 if((tl = fw_get_tlabel(fc, xfer)) == -1 )
 253                         return EIO;
 254                 fp->mode.hdr.tlrt = tl << 2;
 255         }
 256
 257         xfer->tl = tl;
 258         xfer->resp = 0;
 259         xfer->fc = fc;
 260         xfer->q = xferq;
 261         xfer->retry_req = fw_asybusy;
 262
 263         fw_asystart(xfer);
 264         return err;
 265 }
 266 /*
 267  * Wakeup blocked process.
 268  */
 269 void
 270 fw_asy_callback(struct fw_xfer *xfer){
 271         wakeup(xfer);
 272         return;
 273 }
 274 /*
 275  * Postpone to later retry.
 276  */
 277 void
 278 fw_asybusy(struct fw_xfer *xfer)
 279 {
 280         kprintf("fw_asybusy\n");
 281 /*
 282         xfer->ch =  timeout((timeout_t *)fw_asystart, (void *)xfer, 20000);
 283 */
 284 #if 0
 285         DELAY(20000);
 286 #endif
 287         fw_asystart(xfer);
 288         return;
 289 }
 290
 291 /*
 292  * Async. request with given xfer structure.
 293  */
 294 static void
 295 fw_asystart(struct fw_xfer *xfer)
 296 {
 297         struct firewire_comm *fc = xfer->fc;
 298
 299         if(xfer->retry++ >= fc->max_asyretry){
 300                 device_printf(fc->bdev, "max_asyretry exceeded\n");
 301                 xfer->resp = EBUSY;
 302                 xfer->state = FWXF_BUSY;
 303                 xfer->act.hand(xfer);
 304                 return;
 305         }
 306 #if 0 /* XXX allow bus explore packets only after bus rest */
 307         if (fc->status < FWBUSEXPLORE) {
 308                 xfer->resp = EAGAIN;
 309                 xfer->state = FWXF_BUSY;
 310                 if (xfer->act.hand != NULL)
 311                         xfer->act.hand(xfer);
 312                 return;
 313         }
 314 #endif
 315         crit_enter();
 316         xfer->state = FWXF_INQ;
 317         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 318         xfer->q->queued ++;
 319         crit_exit();
 320         /* XXX just queue for mbuf */
 321         if (xfer->mbuf == NULL)
 322                 xfer->q->start(fc);
 323         return;
 324 }
 325
 326 static int
 327 firewire_probe(device_t dev)
 328 {
 329         device_set_desc(dev, "IEEE1394(FireWire) bus");
 330         return (0);
 331 }
 332
 333 static void
 334 firewire_xfer_timeout(struct firewire_comm *fc)
 335 {
 336         struct fw_xfer *xfer;
 337         struct tlabel *tl;
 338         struct timeval tv;
 339         struct timeval split_timeout;
 340         int i;
 341
 342         split_timeout.tv_sec = 0;
 343         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 344
 345         microtime(&tv);
 346         timevalsub(&tv, &split_timeout);
 347
 348         crit_enter();
 349         for (i = 0; i < 0x40; i ++) {
 350                 while ((tl = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 351                         xfer = tl->xfer;
 352                         if (timevalcmp(&xfer->tv, &tv, >))
 353                                 /* the rests are newer than this */
 354                                 break;
 355                         if (xfer->state == FWXF_START)
 356                                 /* not sent yet */
 357                                 break;
 358                         device_printf(fc->bdev,
 359                                 "split transaction timeout dst=0x%x tl=0x%x state=%d\n",
 360                                 xfer->send.hdr.mode.hdr.dst, i, xfer->state);
 361                         xfer->resp = ETIMEDOUT;
 362                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], link);
 363                         fw_xfer_done(xfer);
 364                 }
 365         }
 366         crit_exit();
 367 }
 368
 369 #define WATCHDOC_HZ 10
 370 static void
 371 firewire_watchdog(void *arg)
 372 {
 373         struct firewire_comm *fc;
 374         static int watchdoc_clock = 0;
 375
 376         fc = (struct firewire_comm *)arg;
 377
 378         /*
 379          * At boot stage, the device interrupt is disabled and
 380          * We encounter a timeout easily. To avoid this,
 381          * ignore clock interrupt for a while.
 382          */
 383         if (watchdoc_clock > WATCHDOC_HZ * 15) {
 384                 firewire_xfer_timeout(fc);
 385                 fc->timeout(fc);
 386         } else
 387                 watchdoc_clock ++;
 388
 389         callout_reset(&fc->timeout_callout, hz / WATCHDOC_HZ,
 390                         (void *)firewire_watchdog, (void *)fc);
 391 }
 392
 393 /*
 394  * The attach routine.
 395  */
 396 static int
 397 firewire_attach(device_t dev)
 398 {
 399         int unit;
 400         struct firewire_softc *sc = device_get_softc(dev);
 401         device_t pa = device_get_parent(dev);
 402         struct firewire_comm *fc;
 403
 404         fc = (struct firewire_comm *)device_get_softc(pa);
 405         sc->fc = fc;
 406         fc->status = FWBUSNOTREADY;
 407
 408         unit = device_get_unit(dev);
 409         if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
 410
 411         fwdev_makedev(sc);
 412
 413         CALLOUT_INIT(&sc->fc->timeout_callout);
 414         CALLOUT_INIT(&sc->fc->bmr_callout);
 415         CALLOUT_INIT(&sc->fc->retry_probe_callout);
 416         CALLOUT_INIT(&sc->fc->busprobe_callout);
 417
 418         callout_reset(&sc->fc->timeout_callout, hz,
 419                         (void *)firewire_watchdog, (void *)sc->fc);
 420
 421         /* Locate our children */
 422         bus_generic_probe(dev);
 423
 424         /* launch attachement of the added children */
 425         bus_generic_attach(dev);
 426
 427         /* bus_reset */
 428         fw_busreset(fc);
 429         fc->ibr(fc);
 430
 431         return 0;
 432 }
 433
 434 /*
 435  * Attach it as child.
 436  */
 437 static device_t
 438 firewire_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
 439 {
 440         device_t child;
 441         struct firewire_softc *sc;
 442
 443         sc = (struct firewire_softc *)device_get_softc(parent);
 444         child = device_add_child(parent, name, unit);
 445         if (child) {
 446                 device_set_ivars(child, sc->fc);
 447                 device_probe_and_attach(child);
 448         }
 449
 450         return child;
 451 }
 452
 453 static int
 454 firewire_resume(device_t dev)
 455 {
 456         struct firewire_softc *sc;
 457
 458         sc = (struct firewire_softc *)device_get_softc(dev);
 459         sc->fc->status = FWBUSNOTREADY;
 460
 461         bus_generic_resume(dev);
 462
 463         return(0);
 464 }
 465
 466 /*
 467  * Dettach it.
 468  */
 469 static int
 470 firewire_detach(device_t dev)
 471 {
 472         struct firewire_softc *sc;
 473         struct csrdir *csrd, *next;
 474         struct fw_device *fwdev, *fwdev_next;
 475         int err;
 476
 477         sc = (struct firewire_softc *)device_get_softc(dev);
 478         if ((err = fwdev_destroydev(sc)) != 0)
 479                 return err;
 480
 481         if ((err = bus_generic_detach(dev)) != 0)
 482                 return err;
 483
 484         callout_stop(&sc->fc->timeout_callout);
 485         callout_stop(&sc->fc->bmr_callout);
 486         callout_stop(&sc->fc->retry_probe_callout);
 487         callout_stop(&sc->fc->busprobe_callout);
 488
 489         /* XXX xfree_free and callout_stop on all xfers */
 490         for (fwdev = STAILQ_FIRST(&sc->fc->devices); fwdev != NULL;
 491                                                         fwdev = fwdev_next) {
 492                 fwdev_next = STAILQ_NEXT(fwdev, link);
 493                 kfree(fwdev, M_FW);
 494         }
 495         for (csrd = SLIST_FIRST(&sc->fc->csrfree); csrd != NULL; csrd = next) {
 496                 next = SLIST_NEXT(csrd, link);
 497                 kfree(csrd, M_FW);
 498         }
 499         kfree(sc->fc->topology_map, M_FW);
 500         kfree(sc->fc->speed_map, M_FW);
 501         kfree(sc->fc->crom_src_buf, M_FW);
 502         return(0);
 503 }
 504 #if 0
 505 static int
 506 firewire_shutdown( device_t dev )
 507 {
 508         return 0;
 509 }
 510 #endif
 511
 512
 513 static void
 514 fw_xferq_drain(struct fw_xferq *xferq)
 515 {
 516         struct fw_xfer *xfer;
 517
 518         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 519                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 520                 xferq->queued --;
 521                 xfer->resp = EAGAIN;
 522                 xfer->state = FWXF_SENTERR;
 523                 fw_xfer_done(xfer);
 524         }
 525 }
 526
 527 void
 528 fw_drain_txq(struct firewire_comm *fc)
 529 {
 530         int i;
 531
 532         fw_xferq_drain(fc->atq);
 533         fw_xferq_drain(fc->ats);
 534         for(i = 0; i < fc->nisodma; i++)
 535                 fw_xferq_drain(fc->it[i]);
 536 }
 537
 538 static void
 539 fw_reset_csr(struct firewire_comm *fc)
 540 {
 541         int i;
 542
 543         CSRARC(fc, STATE_CLEAR)
 544                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 545         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 546         CSRARC(fc, NODE_IDS) = 0x3f;
 547
 548         CSRARC(fc, TOPO_MAP + 8) = 0;
 549         fc->irm = -1;
 550
 551         fc->max_node = -1;
 552
 553         for(i = 2; i < 0x100/4 - 2 ; i++){
 554                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 555         }
 556         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 557         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 558         CSRARC(fc, RESET_START) = 0;
 559         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 560         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 561         CSRARC(fc, CYCLE_TIME) = 0x0;
 562         CSRARC(fc, BUS_TIME) = 0x0;
 563         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 564         CSRARC(fc, BANDWIDTH_AV) = 4915;
 565         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 566         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 567         CSRARC(fc, IP_CHANNELS) = (1 << 31);
 568
 569         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 570         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 571         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 572                                 1 << 28 | 0xff << 16 | 0x09 << 8;
 573         CSRARC(fc, CONF_ROM + 0xc) = 0;
 574
 575 /* DV depend CSRs see blue book */
 576         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 577         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 578
 579         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
 580         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 581 }
 582
 583 static void
 584 fw_init_crom(struct firewire_comm *fc)
 585 {
 586         struct crom_src *src;
 587
 588         fc->crom_src_buf = (struct crom_src_buf *)
 589                 kmalloc(sizeof(struct crom_src_buf), M_FW, M_WAITOK | M_ZERO);
 590
 591         src = &fc->crom_src_buf->src;
 592         bzero(src, sizeof(struct crom_src));
 593
 594         /* BUS info sample */
 595         src->hdr.info_len = 4;
 596
 597         src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 598
 599         src->businfo.irmc = 1;
 600         src->businfo.cmc = 1;
 601         src->businfo.isc = 1;
 602         src->businfo.bmc = 1;
 603         src->businfo.pmc = 0;
 604         src->businfo.cyc_clk_acc = 100;
 605         src->businfo.max_rec = fc->maxrec;
 606         src->businfo.max_rom = MAXROM_4;
 607         src->businfo.generation = 1;
 608         src->businfo.link_spd = fc->speed;
 609
 610         src->businfo.eui64.hi = fc->eui.hi;
 611         src->businfo.eui64.lo = fc->eui.lo;
 612
 613         STAILQ_INIT(&src->chunk_list);
 614
 615         fc->crom_src = src;
 616         fc->crom_root = &fc->crom_src_buf->root;
 617 }
 618
 619 static void
 620 fw_reset_crom(struct firewire_comm *fc)
 621 {
 622         struct crom_src_buf *buf;
 623         struct crom_src *src;
 624         struct crom_chunk *root;
 625
 626         if (fc->crom_src_buf == NULL)
 627                 fw_init_crom(fc);
 628
 629         buf =  fc->crom_src_buf;
 630         src = fc->crom_src;
 631         root = fc->crom_root;
 632
 633         STAILQ_INIT(&src->chunk_list);
 634
 635         bzero(root, sizeof(struct crom_chunk));
 636         crom_add_chunk(src, NULL, root, 0);
 637         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 638         /* private company_id */
 639         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 640 #ifdef __DragonFly__
 641         crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
 642         crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
 643 #else
 644         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 645         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 646 #endif
 647         crom_add_simple_text(src, root, &buf->hw, hostname);
 648 }
 649
 650 /*
 651  * Called after bus reset.
 652  */
 653 void
 654 fw_busreset(struct firewire_comm *fc)
 655 {
 656         struct firewire_dev_comm *fdc;
 657         struct crom_src *src;
 658         device_t *devlistp;
 659         void *newrom;
 660         int i, devcnt;
 661
 662         switch(fc->status){
 663         case FWBUSMGRELECT:
 664                 callout_stop(&fc->bmr_callout);
 665                 break;
 666         default:
 667                 break;
 668         }
 669         fc->status = FWBUSRESET;
 670         fw_reset_csr(fc);
 671         fw_reset_crom(fc);
 672
 673         if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
 674                 for( i = 0 ; i < devcnt ; i++)
 675                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
 676                                 fdc = device_get_softc(devlistp[i]);
 677                                 if (fdc->post_busreset != NULL)
 678                                         fdc->post_busreset(fdc);
 679                         }
 680                 kfree(devlistp, M_TEMP);
 681         }
 682
 683         newrom = kmalloc(CROMSIZE, M_FW, M_WAITOK | M_ZERO);
 684         src = &fc->crom_src_buf->src;
 685         crom_load(src, (u_int32_t *)newrom, CROMSIZE);
 686         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 687                 /* bump generation and reload */
 688                 src->businfo.generation ++;
 689                 /* generation must be between 0x2 and 0xF */
 690                 if (src->businfo.generation < 2)
 691                         src->businfo.generation ++;
 692                 crom_load(src, (u_int32_t *)newrom, CROMSIZE);
 693                 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
 694         }
 695         kfree(newrom, M_FW);
 696 }
 697
 698 /* Call once after reboot */
 699 void
 700 fw_init(struct firewire_comm *fc)
 701 {
 702         int i;
 703         struct csrdir *csrd;
 704 #ifdef FW_VMACCESS
 705         struct fw_xfer *xfer;
 706         struct fw_bind *fwb;
 707 #endif
 708
 709         fc->max_asyretry = FW_MAXASYRTY;
 710
 711         fc->arq->queued = 0;
 712         fc->ars->queued = 0;
 713         fc->atq->queued = 0;
 714         fc->ats->queued = 0;
 715
 716         fc->arq->buf = NULL;
 717         fc->ars->buf = NULL;
 718         fc->atq->buf = NULL;
 719         fc->ats->buf = NULL;
 720
 721         fc->arq->flag = 0;
 722         fc->ars->flag = 0;
 723         fc->atq->flag = 0;
 724         fc->ats->flag = 0;
 725
 726         STAILQ_INIT(&fc->atq->q);
 727         STAILQ_INIT(&fc->ats->q);
 728
 729         for( i = 0 ; i < fc->nisodma ; i ++ ){
 730                 fc->it[i]->queued = 0;
 731                 fc->ir[i]->queued = 0;
 732
 733                 fc->it[i]->start = NULL;
 734                 fc->ir[i]->start = NULL;
 735
 736                 fc->it[i]->buf = NULL;
 737                 fc->ir[i]->buf = NULL;
 738
 739                 fc->it[i]->flag = FWXFERQ_STREAM;
 740                 fc->ir[i]->flag = FWXFERQ_STREAM;
 741
 742                 STAILQ_INIT(&fc->it[i]->q);
 743                 STAILQ_INIT(&fc->ir[i]->q);
 744
 745                 STAILQ_INIT(&fc->it[i]->binds);
 746                 STAILQ_INIT(&fc->ir[i]->binds);
 747         }
 748
 749         fc->arq->maxq = FWMAXQUEUE;
 750         fc->ars->maxq = FWMAXQUEUE;
 751         fc->atq->maxq = FWMAXQUEUE;
 752         fc->ats->maxq = FWMAXQUEUE;
 753
 754         for( i = 0 ; i < fc->nisodma ; i++){
 755                 fc->ir[i]->maxq = FWMAXQUEUE;
 756                 fc->it[i]->maxq = FWMAXQUEUE;
 757         }
 758 /* Initialize csr registers */
 759         fc->topology_map = kmalloc(sizeof(struct fw_topology_map),
 760                                     M_FW, M_WAITOK | M_ZERO);
 761         fc->speed_map = kmalloc(sizeof(struct fw_speed_map),
 762                                     M_FW, M_WAITOK | M_ZERO);
 763         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 764         CSRARC(fc, TOPO_MAP + 4) = 1;
 765         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 766         CSRARC(fc, SPED_MAP + 4) = 1;
 767
 768         STAILQ_INIT(&fc->devices);
 769
 770 /* Initialize csr ROM work space */
 771         SLIST_INIT(&fc->ongocsr);
 772         SLIST_INIT(&fc->csrfree);
 773         for( i = 0 ; i < FWMAXCSRDIR ; i++){
 774                 csrd = kmalloc(sizeof(struct csrdir), M_FW, M_WAITOK);
 775                 SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
 776         }
 777
 778 /* Initialize Async handlers */
 779         STAILQ_INIT(&fc->binds);
 780         for( i = 0 ; i < 0x40 ; i++){
 781                 STAILQ_INIT(&fc->tlabels[i]);
 782         }
 783
 784 /* DV depend CSRs see blue book */
 785 #if 0
 786         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 787         CSRARC(fc, oPCR) = 0x8000007a;
 788         for(i = 4 ; i < 0x7c/4 ; i+=4){
 789                 CSRARC(fc, i + oPCR) = 0x8000007a;
 790         }
 791
 792         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 793         CSRARC(fc, iPCR) = 0x803f0000;
 794         for(i = 4 ; i < 0x7c/4 ; i+=4){
 795                 CSRARC(fc, i + iPCR) = 0x0;
 796         }
 797 #endif
 798
 799         fc->crom_src_buf = NULL;
 800
 801 #ifdef FW_VMACCESS
 802         xfer = fw_xfer_alloc();
 803         if(xfer == NULL) return;
 804
 805         fwb = kmalloc(sizeof (struct fw_bind), M_FW, M_WAITOK);
 806         xfer->act.hand = fw_vmaccess;
 807         xfer->fc = fc;
 808         xfer->sc = NULL;
 809
 810         fwb->start_hi = 0x2;
 811         fwb->start_lo = 0;
 812         fwb->addrlen = 0xffffffff;
 813         fwb->xfer = xfer;
 814         fw_bindadd(fc, fwb);
 815 #endif
 816 }
 817
 818 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
 819     ((fwb)->end < (addr))?1:0)
 820
 821 /*
 822  * To lookup binded process from IEEE1394 address.
 823  */
 824 struct fw_bind *
 825 fw_bindlookup(struct firewire_comm *fc, u_int16_t dest_hi, u_int32_t dest_lo)
 826 {
 827         u_int64_t addr;
 828         struct fw_bind *tfw;
 829
 830         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 831         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 832                 if (tfw->act_type != FWACT_NULL && BIND_CMP(addr, tfw) == 0)
 833                         return(tfw);
 834         return(NULL);
 835 }
 836
 837 /*
 838  * To bind IEEE1394 address block to process.
 839  */
 840 int
 841 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 842 {
 843         struct fw_bind *tfw, *prev = NULL;
 844
 845         if (fwb->start > fwb->end) {
 846                 kprintf("%s: invalid range\n", __func__);
 847                 return EINVAL;
 848         }
 849
 850         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 851                 if (fwb->end < tfw->start)
 852                         break;
 853                 prev = tfw;
 854         }
 855         if (prev == NULL) {
 856                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 857                 goto out;
 858         }
 859         if (prev->end < fwb->start) {
 860                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 861                 goto out;
 862         }
 863
 864         kprintf("%s: bind failed\n", __func__);
 865         return (EBUSY);
 866
 867 out:
 868         if (fwb->act_type == FWACT_CH)
 869                 STAILQ_INSERT_HEAD(&fc->ir[fwb->sub]->binds, fwb, chlist);
 870         return (0);
 871 }
 872
 873 /*
 874  * To free IEEE1394 address block.
 875  */
 876 int
 877 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 878 {
 879 #if 0
 880         struct fw_xfer *xfer, *next;
 881 #endif
 882         struct fw_bind *tfw;
 883
 884         crit_enter();
 885         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 886                 if (tfw == fwb) {
 887                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 888                         goto found;
 889                 }
 890
 891         kprintf("%s: no such bind\n", __func__);
 892         crit_exit();
 893         return (1);
 894 found:
 895 #if 0
 896         /* shall we do this? */
 897         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 898                 next = STAILQ_NEXT(xfer, link);
 899                 fw_xfer_free(xfer);
 900         }
 901         STAILQ_INIT(&fwb->xferlist);
 902 #endif
 903
 904         crit_exit();
 905         return 0;
 906 }
 907
 908 /*
 909  * To free transaction label.
 910  */
 911 static void
 912 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
 913 {
 914         struct tlabel *tl;
 915
 916         crit_enter();
 917         for( tl = STAILQ_FIRST(&fc->tlabels[xfer->tl]); tl != NULL;
 918                 tl = STAILQ_NEXT(tl, link)){
 919                 if(tl->xfer == xfer){
 920                         STAILQ_REMOVE(&fc->tlabels[xfer->tl], tl, tlabel, link);
 921                         kfree(tl, M_FW);
 922                         break;
 923                 }
 924         }
 925         crit_exit();
 926 }
 927
 928 /*
 929  * To obtain XFER structure by transaction label.
 930  */
 931 static struct fw_xfer *
 932 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel)
 933 {
 934         struct fw_xfer *xfer;
 935         struct tlabel *tl;
 936
 937         crit_enter();
 938
 939         for( tl = STAILQ_FIRST(&fc->tlabels[tlabel]); tl != NULL;
 940                 tl = STAILQ_NEXT(tl, link)){
 941                 if(tl->xfer->send.hdr.mode.hdr.dst == node){
 942                         xfer = tl->xfer;
 943                         crit_exit();
 944                         if (firewire_debug > 2)
 945                                 kprintf("fw_tl2xfer: found tl=%d\n", tlabel);
 946                         return(xfer);
 947                 }
 948         }
 949         if (firewire_debug > 1)
 950                 kprintf("fw_tl2xfer: not found tl=%d\n", tlabel);
 951         crit_exit();
 952         return(NULL);
 953 }
 954
 955 /*
 956  * To allocate IEEE1394 XFER structure.
 957  */
 958 struct fw_xfer *
 959 fw_xfer_alloc(struct malloc_type *type)
 960 {
 961         struct fw_xfer *xfer;
 962
 963         xfer = kmalloc(sizeof(struct fw_xfer), type, M_INTWAIT | M_ZERO);
 964         xfer->malloc = type;
 965
 966         return xfer;
 967 }
 968
 969 struct fw_xfer *
 970 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
 971 {
 972         struct fw_xfer *xfer;
 973
 974         xfer = fw_xfer_alloc(type);
 975         xfer->send.pay_len = send_len;
 976         xfer->recv.pay_len = recv_len;
 977         if (xfer == NULL)
 978                 return(NULL);
 979         if (send_len > 0) {
 980                 xfer->send.payload = kmalloc(send_len, type, M_INTWAIT | M_ZERO);
 981                 if (xfer->send.payload == NULL) {
 982                         fw_xfer_free(xfer);
 983                         return(NULL);
 984                 }
 985         }
 986         if (recv_len > 0) {
 987                 xfer->recv.payload = kmalloc(recv_len, type, M_INTWAIT);
 988                 if (xfer->recv.payload == NULL) {
 989                         if (xfer->send.payload != NULL)
 990                                 kfree(xfer->send.payload, type);
 991                         fw_xfer_free(xfer);
 992                         return(NULL);
 993                 }
 994         }
 995         return(xfer);
 996 }
 997
 998 /*
 999  * IEEE1394 XFER post process.
1000  */
1001 void
1002 fw_xfer_done(struct fw_xfer *xfer)
1003 {
1004         if (xfer->act.hand == NULL) {
1005                 kprintf("act.hand == NULL\n");
1006                 return;
1007         }
1008
1009         if (xfer->fc == NULL)
1010                 panic("fw_xfer_done: why xfer->fc is NULL?");
1011
1012         xfer->act.hand(xfer);
1013 }
1014
1015 void
1016 fw_xfer_unload(struct fw_xfer* xfer)
1017 {
1018         if(xfer == NULL ) return;
1019         if(xfer->state == FWXF_INQ){
1020                 kprintf("fw_xfer_free FWXF_INQ\n");
1021                 crit_enter();
1022                 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1023                 xfer->q->queued --;
1024                 crit_exit();
1025         }
1026         if (xfer->fc != NULL) {
1027 #if 1
1028                 if(xfer->state == FWXF_START)
1029                         /*
1030                          * This could happen if:
1031                          *  1. We call fwohci_arcv() before fwohci_txd().
1032                          *  2. firewire_watch() is called.
1033                          */
1034                         kprintf("fw_xfer_free FWXF_START\n");
1035 #endif
1036                 fw_tl_free(xfer->fc, xfer);
1037         }
1038         xfer->state = FWXF_INIT;
1039         xfer->resp = 0;
1040         xfer->retry = 0;
1041 }
1042 /*
1043  * To free IEEE1394 XFER structure.
1044  */
1045 void
1046 fw_xfer_free_buf( struct fw_xfer* xfer)
1047 {
1048         if (xfer == NULL) {
1049                 kprintf("%s: xfer == NULL\n", __func__);
1050                 return;
1051         }
1052         fw_xfer_unload(xfer);
1053         if(xfer->send.payload != NULL){
1054                 kfree(xfer->send.payload, xfer->malloc);
1055         }
1056         if(xfer->recv.payload != NULL){
1057                 kfree(xfer->recv.payload, xfer->malloc);
1058         }
1059         kfree(xfer, xfer->malloc);
1060 }
1061
1062 void
1063 fw_xfer_free( struct fw_xfer* xfer)
1064 {
1065         if (xfer == NULL) {
1066                 kprintf("%s: xfer == NULL\n", __func__);
1067                 return;
1068         }
1069         fw_xfer_unload(xfer);
1070         kfree(xfer, xfer->malloc);
1071 }
1072
1073 void
1074 fw_asy_callback_free(struct fw_xfer *xfer)
1075 {
1076 #if 0
1077         kprintf("asyreq done state=%d resp=%d\n",
1078                                 xfer->state, xfer->resp);
1079 #endif
1080         fw_xfer_free(xfer);
1081 }
1082
1083 /*
1084  * To configure PHY.
1085  */
1086 static void
1087 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1088 {
1089         struct fw_xfer *xfer;
1090         struct fw_pkt *fp;
1091
1092         fc->status = FWBUSPHYCONF;
1093
1094         xfer = fw_xfer_alloc(M_FWXFER);
1095         if (xfer == NULL)
1096                 return;
1097         xfer->fc = fc;
1098         xfer->retry_req = fw_asybusy;
1099         xfer->act.hand = fw_asy_callback_free;
1100
1101         fp = &xfer->send.hdr;
1102         fp->mode.ld[1] = 0;
1103         if (root_node >= 0)
1104                 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1105         if (gap_count >= 0)
1106                 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1107         fp->mode.ld[2] = ~fp->mode.ld[1];
1108 /* XXX Dangerous, how to pass PHY packet to device driver */
1109         fp->mode.common.tcode |= FWTCODE_PHY;
1110
1111         if (firewire_debug)
1112                 kprintf("send phy_config root_node=%d gap_count=%d\n",
1113                                                 root_node, gap_count);
1114         fw_asyreq(fc, -1, xfer);
1115 }
1116
1117 #if 0
1118 /*
1119  * Dump self ID.
1120  */
1121 static void
1122 fw_print_sid(u_int32_t sid)
1123 {
1124         union fw_self_id *s;
1125         s = (union fw_self_id *) &sid;
1126         kprintf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d"
1127                 " p0:%d p1:%d p2:%d i:%d m:%d\n",
1128                 s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1129                 s->p0.phy_speed, s->p0.phy_delay, s->p0.contender,
1130                 s->p0.power_class, s->p0.port0, s->p0.port1,
1131                 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1132 }
1133 #endif
1134
1135 /*
1136  * To receive self ID.
1137  */
1138 void
1139 fw_sidrcv(struct firewire_comm* fc, u_int32_t *sid, u_int len)
1140 {
1141         u_int32_t *p;
1142         union fw_self_id *self_id;
1143         u_int i, j, node, c_port = 0, i_branch = 0;
1144
1145         fc->sid_cnt = len /(sizeof(u_int32_t) * 2);
1146         fc->status = FWBUSINIT;
1147         fc->max_node = fc->nodeid & 0x3f;
1148         CSRARC(fc, NODE_IDS) = ((u_int32_t)fc->nodeid) << 16;
1149         fc->status = FWBUSCYMELECT;
1150         fc->topology_map->crc_len = 2;
1151         fc->topology_map->generation ++;
1152         fc->topology_map->self_id_count = 0;
1153         fc->topology_map->node_count = 0;
1154         fc->speed_map->generation ++;
1155         fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1156         self_id = &fc->topology_map->self_id[0];
1157         for(i = 0; i < fc->sid_cnt; i ++){
1158                 if (sid[1] != ~sid[0]) {
1159                         kprintf("fw_sidrcv: invalid self-id packet\n");
1160                         sid += 2;
1161                         continue;
1162                 }
1163                 *self_id = *((union fw_self_id *)sid);
1164                 fc->topology_map->crc_len++;
1165                 if(self_id->p0.sequel == 0){
1166                         fc->topology_map->node_count ++;
1167                         c_port = 0;
1168 #if 0
1169                         fw_print_sid(sid[0]);
1170 #endif
1171                         node = self_id->p0.phy_id;
1172                         if(fc->max_node < node){
1173                                 fc->max_node = self_id->p0.phy_id;
1174                         }
1175                         /* XXX I'm not sure this is the right speed_map */
1176                         fc->speed_map->speed[node][node]
1177                                         = self_id->p0.phy_speed;
1178                         for (j = 0; j < node; j ++) {
1179                                 fc->speed_map->speed[j][node]
1180                                         = fc->speed_map->speed[node][j]
1181                                         = min(fc->speed_map->speed[j][j],
1182                                                         self_id->p0.phy_speed);
1183                         }
1184                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1185                           (self_id->p0.link_active && self_id->p0.contender)) {
1186                                 fc->irm = self_id->p0.phy_id;
1187                         }
1188                         if(self_id->p0.port0 >= 0x2){
1189                                 c_port++;
1190                         }
1191                         if(self_id->p0.port1 >= 0x2){
1192                                 c_port++;
1193                         }
1194                         if(self_id->p0.port2 >= 0x2){
1195                                 c_port++;
1196                         }
1197                 }
1198                 if(c_port > 2){
1199                         i_branch += (c_port - 2);
1200                 }
1201                 sid += 2;
1202                 self_id++;
1203                 fc->topology_map->self_id_count ++;
1204         }
1205         device_printf(fc->bdev, "%d nodes", fc->max_node + 1);
1206         /* CRC */
1207         fc->topology_map->crc = fw_crc16(
1208                         (u_int32_t *)&fc->topology_map->generation,
1209                         fc->topology_map->crc_len * 4);
1210         fc->speed_map->crc = fw_crc16(
1211                         (u_int32_t *)&fc->speed_map->generation,
1212                         fc->speed_map->crc_len * 4);
1213         /* byteswap and copy to CSR */
1214         p = (u_int32_t *)fc->topology_map;
1215         for (i = 0; i <= fc->topology_map->crc_len; i++)
1216                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1217         p = (u_int32_t *)fc->speed_map;
1218         CSRARC(fc, SPED_MAP) = htonl(*p++);
1219         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1220         /* don't byte-swap u_int8_t array */
1221         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1222
1223         fc->max_hop = fc->max_node - i_branch;
1224         kprintf(", maxhop <= %d", fc->max_hop);
1225
1226         if(fc->irm == -1 ){
1227                 kprintf(", Not found IRM capable node");
1228         }else{
1229                 kprintf(", cable IRM = %d", fc->irm);
1230                 if (fc->irm == fc->nodeid)
1231                         kprintf(" (me)");
1232         }
1233         kprintf("\n");
1234
1235         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1236                 if (fc->irm == fc->nodeid) {
1237                         fc->status = FWBUSMGRDONE;
1238                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1239                         fw_bmr(fc);
1240                 } else {
1241                         fc->status = FWBUSMGRELECT;
1242                         callout_reset(&fc->bmr_callout, hz/8,
1243                                 (void *)fw_try_bmr, (void *)fc);
1244                 }
1245         } else
1246                 fc->status = FWBUSMGRDONE;
1247
1248         callout_reset(&fc->busprobe_callout, hz/4,
1249                         (void *)fw_bus_probe, (void *)fc);
1250 }
1251
1252 /*
1253  * To probe devices on the IEEE1394 bus.
1254  */
1255 static void
1256 fw_bus_probe(struct firewire_comm *fc)
1257 {
1258         struct fw_device *fwdev;
1259
1260         crit_enter();
1261         fc->status = FWBUSEXPLORE;
1262         fc->retry_count = 0;
1263
1264         /* Invalidate all devices, just after bus reset. */
1265         STAILQ_FOREACH(fwdev, &fc->devices, link)
1266                 if (fwdev->status != FWDEVINVAL) {
1267                         fwdev->status = FWDEVINVAL;
1268                         fwdev->rcnt = 0;
1269                 }
1270
1271         fc->ongonode = 0;
1272         fc->ongoaddr = CSRROMOFF;
1273         fc->ongodev = NULL;
1274         fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
1275         fw_bus_explore(fc);
1276         crit_exit();
1277 }
1278
1279 /*
1280  * To collect device informations on the IEEE1394 bus.
1281  */
1282 static void
1283 fw_bus_explore(struct firewire_comm *fc )
1284 {
1285         int err = 0;
1286         struct fw_device *fwdev, *pfwdev, *tfwdev;
1287         u_int32_t addr;
1288         struct fw_xfer *xfer;
1289         struct fw_pkt *fp;
1290
1291         if(fc->status != FWBUSEXPLORE)
1292                 return;
1293
1294 loop:
1295         if(fc->ongonode == fc->nodeid) fc->ongonode++;
1296
1297         if(fc->ongonode > fc->max_node) goto done;
1298         if(fc->ongonode >= 0x3f) goto done;
1299
1300         /* check link */
1301         /* XXX we need to check phy_id first */
1302         if (!fc->topology_map->self_id[fc->ongonode].p0.link_active) {
1303                 if (firewire_debug)
1304                         kprintf("node%d: link down\n", fc->ongonode);
1305                 fc->ongonode++;
1306                 goto loop;
1307         }
1308
1309         if(fc->ongoaddr <= CSRROMOFF &&
1310                 fc->ongoeui.hi == 0xffffffff &&
1311                 fc->ongoeui.lo == 0xffffffff ){
1312                 fc->ongoaddr = CSRROMOFF;
1313                 addr = 0xf0000000 | fc->ongoaddr;
1314         }else if(fc->ongoeui.hi == 0xffffffff ){
1315                 fc->ongoaddr = CSRROMOFF + 0xc;
1316                 addr = 0xf0000000 | fc->ongoaddr;
1317         }else if(fc->ongoeui.lo == 0xffffffff ){
1318                 fc->ongoaddr = CSRROMOFF + 0x10;
1319                 addr = 0xf0000000 | fc->ongoaddr;
1320         }else if(fc->ongodev == NULL){
1321                 STAILQ_FOREACH(fwdev, &fc->devices, link)
1322                         if (FW_EUI64_EQUAL(fwdev->eui, fc->ongoeui))
1323                                 break;
1324                 if(fwdev != NULL){
1325                         fwdev->dst = fc->ongonode;
1326                         fwdev->status = FWDEVINIT;
1327                         fc->ongodev = fwdev;
1328                         fc->ongoaddr = CSRROMOFF;
1329                         addr = 0xf0000000 | fc->ongoaddr;
1330                         goto dorequest;
1331                 }
1332                 fwdev = kmalloc(sizeof(struct fw_device), M_FW,
1333                                 M_WAITOK | M_ZERO);
1334                 fwdev->fc = fc;
1335                 fwdev->rommax = 0;
1336                 fwdev->dst = fc->ongonode;
1337                 fwdev->eui.hi = fc->ongoeui.hi; fwdev->eui.lo = fc->ongoeui.lo;
1338                 fwdev->status = FWDEVINIT;
1339                 fwdev->speed = fc->speed_map->speed[fc->nodeid][fc->ongonode];
1340
1341                 pfwdev = NULL;
1342                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1343                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1344                                         (tfwdev->eui.hi == fwdev->eui.hi &&
1345                                         tfwdev->eui.lo > fwdev->eui.lo))
1346                                 break;
1347                         pfwdev = tfwdev;
1348                 }
1349                 if (pfwdev == NULL)
1350                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1351                 else
1352                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1353
1354                 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1355                         linkspeed[fwdev->speed],
1356                         fc->ongoeui.hi, fc->ongoeui.lo);
1357
1358                 fc->ongodev = fwdev;
1359                 fc->ongoaddr = CSRROMOFF;
1360                 addr = 0xf0000000 | fc->ongoaddr;
1361         }else{
1362                 addr = 0xf0000000 | fc->ongoaddr;
1363         }
1364 dorequest:
1365 #if 0
1366         xfer = asyreqq(fc, FWSPD_S100, 0, 0,
1367                 ((FWLOCALBUS | fc->ongonode) << 16) | 0xffff , addr,
1368                 fw_bus_explore_callback);
1369         if(xfer == NULL) goto done;
1370 #else
1371         xfer = fw_xfer_alloc(M_FWXFER);
1372         if(xfer == NULL){
1373                 goto done;
1374         }
1375         xfer->send.spd = 0;
1376         fp = &xfer->send.hdr;
1377         fp->mode.rreqq.dest_hi = 0xffff;
1378         fp->mode.rreqq.tlrt = 0;
1379         fp->mode.rreqq.tcode = FWTCODE_RREQQ;
1380         fp->mode.rreqq.pri = 0;
1381         fp->mode.rreqq.src = 0;
1382         fp->mode.rreqq.dst = FWLOCALBUS | fc->ongonode;
1383         fp->mode.rreqq.dest_lo = addr;
1384         xfer->act.hand = fw_bus_explore_callback;
1385
1386         if (firewire_debug)
1387                 kprintf("node%d: explore addr=0x%x\n",
1388                                 fc->ongonode, fc->ongoaddr);
1389         err = fw_asyreq(fc, -1, xfer);
1390         if(err){
1391                 fw_xfer_free( xfer);
1392                 return;
1393         }
1394 #endif
1395         return;
1396 done:
1397         /* fw_attach_devs */
1398         fc->status = FWBUSEXPDONE;
1399         if (firewire_debug)
1400                 kprintf("bus_explore done\n");
1401         fw_attach_dev(fc);
1402         return;
1403
1404 }
1405
1406 /* Portable Async. request read quad */
1407 struct fw_xfer *
1408 asyreqq(struct firewire_comm *fc, u_int8_t spd, u_int8_t tl, u_int8_t rt,
1409         u_int32_t addr_hi, u_int32_t addr_lo,
1410         void (*hand) (struct fw_xfer*))
1411 {
1412         struct fw_xfer *xfer;
1413         struct fw_pkt *fp;
1414         int err;
1415
1416         xfer = fw_xfer_alloc(M_FWXFER);
1417         if (xfer == NULL)
1418                 return NULL;
1419
1420         xfer->send.spd = spd; /* XXX:min(spd, fc->spd) */
1421         fp = &xfer->send.hdr;
1422         fp->mode.rreqq.dest_hi = addr_hi & 0xffff;
1423         if(tl & FWP_TL_VALID){
1424                 fp->mode.rreqq.tlrt = (tl & 0x3f) << 2;
1425         }else{
1426                 fp->mode.rreqq.tlrt = 0;
1427         }
1428         fp->mode.rreqq.tlrt |= rt & 0x3;
1429         fp->mode.rreqq.tcode = FWTCODE_RREQQ;
1430         fp->mode.rreqq.pri = 0;
1431         fp->mode.rreqq.src = 0;
1432         fp->mode.rreqq.dst = addr_hi >> 16;
1433         fp->mode.rreqq.dest_lo = addr_lo;
1434         xfer->act.hand = hand;
1435
1436         err = fw_asyreq(fc, -1, xfer);
1437         if(err){
1438                 fw_xfer_free( xfer);
1439                 return NULL;
1440         }
1441         return xfer;
1442 }
1443
1444 /*
1445  * Callback for the IEEE1394 bus information collection.
1446  */
1447 static void
1448 fw_bus_explore_callback(struct fw_xfer *xfer)
1449 {
1450         struct firewire_comm *fc;
1451         struct fw_pkt *sfp,*rfp;
1452         struct csrhdr *chdr;
1453         struct csrdir *csrd;
1454         struct csrreg *csrreg;
1455         u_int32_t offset;
1456
1457
1458         if(xfer == NULL) {
1459                 kprintf("xfer == NULL\n");
1460                 return;
1461         }
1462         fc = xfer->fc;
1463
1464         if (firewire_debug)
1465                 kprintf("node%d: callback addr=0x%x\n",
1466                         fc->ongonode, fc->ongoaddr);
1467
1468         if(xfer->resp != 0){
1469                 kprintf("node%d: resp=%d addr=0x%x\n",
1470                         fc->ongonode, xfer->resp, fc->ongoaddr);
1471                 goto errnode;
1472         }
1473
1474         sfp = &xfer->send.hdr;
1475         rfp = &xfer->recv.hdr;
1476 #if 0
1477         {
1478                 u_int32_t *qld;
1479                 int i;
1480                 qld = (u_int32_t *)xfer->recv.buf;
1481                 kprintf("len:%d\n", xfer->recv.len);
1482                 for( i = 0 ; i <= xfer->recv.len && i < 32; i+= 4){
1483                         kprintf("0x%08x ", rfp->mode.ld[i/4]);
1484                         if((i % 16) == 15) kprintf("\n");
1485                 }
1486                 if((i % 16) != 15) kprintf("\n");
1487         }
1488 #endif
1489         if(fc->ongodev == NULL){
1490                 if(sfp->mode.rreqq.dest_lo == (0xf0000000 | CSRROMOFF)){
1491                         rfp->mode.rresq.data = ntohl(rfp->mode.rresq.data);
1492                         chdr = (struct csrhdr *)(&rfp->mode.rresq.data);
1493 /* If CSR is minimal confinguration, more investgation is not needed. */
1494                         if(chdr->info_len == 1){
1495                                 if (firewire_debug)
1496                                         kprintf("node%d: minimal config\n",
1497                                                                 fc->ongonode);
1498                                 goto nextnode;
1499                         }else{
1500                                 fc->ongoaddr = CSRROMOFF + 0xc;
1501                         }
1502                 }else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0xc))){
1503                         fc->ongoeui.hi = ntohl(rfp->mode.rresq.data);
1504                         fc->ongoaddr = CSRROMOFF + 0x10;
1505                 }else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0x10))){
1506                         fc->ongoeui.lo = ntohl(rfp->mode.rresq.data);
1507                         if (fc->ongoeui.hi == 0 && fc->ongoeui.lo == 0) {
1508                                 if (firewire_debug)
1509                                         kprintf("node%d: eui64 is zero.\n",
1510                                                         fc->ongonode);
1511                                 goto nextnode;
1512                         }
1513                         fc->ongoaddr = CSRROMOFF;
1514                 }
1515         }else{
1516                 if (fc->ongoaddr == CSRROMOFF &&
1517                     fc->ongodev->csrrom[0] == ntohl(rfp->mode.rresq.data)) {
1518                         fc->ongodev->status = FWDEVATTACHED;
1519                         goto nextnode;
1520                 }
1521                 fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4] = ntohl(rfp->mode.rresq.data);
1522                 if(fc->ongoaddr > fc->ongodev->rommax){
1523                         fc->ongodev->rommax = fc->ongoaddr;
1524                 }
1525                 csrd = SLIST_FIRST(&fc->ongocsr);
1526                 if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
1527                         chdr = (struct csrhdr *)(fc->ongodev->csrrom);
1528                         offset = CSRROMOFF;
1529                 }else{
1530                         chdr = (struct csrhdr *)&fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4];
1531                         offset = csrd->off;
1532                 }
1533                 if(fc->ongoaddr > (CSRROMOFF + 0x14) && fc->ongoaddr != offset){
1534                         csrreg = (struct csrreg *)&fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4];
1535                         if( csrreg->key == 0x81 || csrreg->key == 0xd1){
1536                                 csrd = SLIST_FIRST(&fc->csrfree);
1537                                 if(csrd == NULL){
1538                                         goto nextnode;
1539                                 }else{
1540                                         csrd->ongoaddr = fc->ongoaddr;
1541                                         fc->ongoaddr += csrreg->val * 4;
1542                                         csrd->off = fc->ongoaddr;
1543                                         SLIST_REMOVE_HEAD(&fc->csrfree, link);
1544                                         SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
1545                                         goto nextaddr;
1546                                 }
1547                         }
1548                 }
1549                 fc->ongoaddr += 4;
1550                 if(((fc->ongoaddr - offset)/4 > chdr->crc_len) &&
1551                                 (fc->ongodev->rommax < 0x414)){
1552                         if(fc->ongodev->rommax <= 0x414){
1553                                 csrd = SLIST_FIRST(&fc->csrfree);
1554                                 if(csrd == NULL) goto nextnode;
1555                                 csrd->off = fc->ongoaddr;
1556                                 csrd->ongoaddr = fc->ongoaddr;
1557                                 SLIST_REMOVE_HEAD(&fc->csrfree, link);
1558                                 SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
1559                         }
1560                         goto nextaddr;
1561                 }
1562
1563                 while(((fc->ongoaddr - offset)/4 > chdr->crc_len)){
1564                         if(csrd == NULL){
1565                                 goto nextnode;
1566                         };
1567                         fc->ongoaddr = csrd->ongoaddr + 4;
1568                         SLIST_REMOVE_HEAD(&fc->ongocsr, link);
1569                         SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
1570                         csrd = SLIST_FIRST(&fc->ongocsr);
1571                         if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
1572                                 chdr = (struct csrhdr *)(fc->ongodev->csrrom);
1573                                 offset = CSRROMOFF;
1574                         }else{
1575                                 chdr = (struct csrhdr *)&(fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4]);
1576                                 offset = csrd->off;
1577                         }
1578                 }
1579                 if((fc->ongoaddr - CSRROMOFF) > CSRROMSIZE){
1580                         goto nextnode;
1581                 }
1582         }
1583 nextaddr:
1584         fw_xfer_free( xfer);
1585         fw_bus_explore(fc);
1586         return;
1587 errnode:
1588         fc->retry_count++;
1589         if (fc->ongodev != NULL)
1590                 fc->ongodev->status = FWDEVINVAL;
1591 nextnode:
1592         fw_xfer_free( xfer);
1593         fc->ongonode++;
1594 /* housekeeping work space */
1595         fc->ongoaddr = CSRROMOFF;
1596         fc->ongodev = NULL;
1597         fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
1598         while((csrd = SLIST_FIRST(&fc->ongocsr)) != NULL){
1599                 SLIST_REMOVE_HEAD(&fc->ongocsr, link);
1600                 SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
1601         }
1602         fw_bus_explore(fc);
1603         return;
1604 }
1605
1606 /*
1607  * To attach sub-devices layer onto IEEE1394 bus.
1608  */
1609 static void
1610 fw_attach_dev(struct firewire_comm *fc)
1611 {
1612         struct fw_device *fwdev, *next;
1613         int i, err;
1614         device_t *devlistp;
1615         int devcnt;
1616         struct firewire_dev_comm *fdc;
1617
1618         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1619                 next = STAILQ_NEXT(fwdev, link);
1620                 if (fwdev->status == FWDEVINIT) {
1621                         fwdev->status = FWDEVATTACHED;
1622                 } else if (fwdev->status == FWDEVINVAL) {
1623                         fwdev->rcnt ++;
1624                         if (fwdev->rcnt > hold_count) {
1625                                 /*
1626                                  * Remove devices which have not been seen
1627                                  * for a while.
1628                                  */
1629                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1630                                     link);
1631                                 kfree(fwdev, M_FW);
1632                         }
1633                 }
1634         }
1635
1636         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1637         if( err != 0 )
1638                 return;
1639         for( i = 0 ; i < devcnt ; i++){
1640                 if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
1641                         fdc = device_get_softc(devlistp[i]);
1642                         if (fdc->post_explore != NULL)
1643                                 fdc->post_explore(fdc);
1644                 }
1645         }
1646         kfree(devlistp, M_TEMP);
1647
1648         if (fc->retry_count > 0) {
1649                 kprintf("probe failed for %d node\n", fc->retry_count);
1650 #if 0
1651                 callout_reset(&fc->retry_probe_callout, hz*2,
1652                                         (void *)fc->ibr, (void *)fc);
1653 #endif
1654         }
1655         return;
1656 }
1657
1658 /*
1659  * To allocate uniq transaction label.
1660  */
1661 static int
1662 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1663 {
1664         u_int i;
1665         struct tlabel *tl, *tmptl;
1666         static u_int32_t label = 0;
1667
1668         crit_enter();
1669         for( i = 0 ; i < 0x40 ; i ++){
1670                 label = (label + 1) & 0x3f;
1671                 for(tmptl = STAILQ_FIRST(&fc->tlabels[label]);
1672                         tmptl != NULL; tmptl = STAILQ_NEXT(tmptl, link)){
1673                         if (tmptl->xfer->send.hdr.mode.hdr.dst ==
1674                             xfer->send.hdr.mode.hdr.dst)
1675                                 break;
1676                 }
1677                 if(tmptl == NULL) {
1678                         tl = kmalloc(sizeof(struct tlabel), M_FW, M_WAITOK);
1679                         tl->xfer = xfer;
1680                         STAILQ_INSERT_TAIL(&fc->tlabels[label], tl, link);
1681                         crit_exit();
1682                         if (firewire_debug > 1)
1683                                 kprintf("fw_get_tlabel: dst=%d tl=%d\n",
1684                                     xfer->send.hdr.mode.hdr.dst, label);
1685                         return(label);
1686                 }
1687         }
1688         crit_exit();
1689
1690         kprintf("fw_get_tlabel: no free tlabel\n");
1691         return(-1);
1692 }
1693
1694 static void
1695 fw_rcv_copy(struct fw_rcv_buf *rb)
1696 {
1697         struct fw_pkt *pkt;
1698         u_char *p;
1699         struct tcode_info *tinfo;
1700         u_int res, i, len, plen;
1701
1702         rb->xfer->recv.spd -= rb->spd;
1703
1704         pkt = (struct fw_pkt *)rb->vec->iov_base;
1705         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1706
1707         /* Copy header */
1708         p = (u_char *)&rb->xfer->recv.hdr;
1709         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1710         rb->vec->iov_base = (uint8_t *)rb->vec->iov_base + tinfo->hdr_len;
1711         rb->vec->iov_len -= tinfo->hdr_len;
1712
1713         /* Copy payload */
1714         p = (u_char *)rb->xfer->recv.payload;
1715         res = rb->xfer->recv.pay_len;
1716
1717         /* special handling for RRESQ */
1718         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1719             p != NULL && res >= sizeof(u_int32_t)) {
1720                 *(u_int32_t *)p = pkt->mode.rresq.data;
1721                 rb->xfer->recv.pay_len = sizeof(u_int32_t);
1722                 return;
1723         }
1724
1725         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1726                 return;
1727
1728         plen = pkt->mode.rresb.len;
1729
1730         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1731                 len = MIN(rb->vec->iov_len, plen);
1732                 if (res < len) {
1733                         kprintf("rcv buffer(%d) is %d bytes short.\n",
1734                             rb->xfer->recv.pay_len, len - res);
1735                         len = res;
1736                 }
1737                 bcopy(rb->vec->iov_base, p, len);
1738                 p += len;
1739                 res -= len;
1740                 plen -= len;
1741                 if (res == 0 || plen == 0)
1742                         break;
1743         }
1744         rb->xfer->recv.pay_len -= res;
1745
1746 }
1747
1748 /*
1749  * Generic packet receving process.
1750  */
1751 void
1752 fw_rcv(struct fw_rcv_buf *rb)
1753 {
1754         struct fw_pkt *fp, *resfp;
1755         struct fw_bind *bind;
1756         int tcode;
1757         int i, len, oldstate;
1758 #if 0
1759         {
1760                 u_int32_t *qld;
1761                 int i;
1762                 qld = (u_int32_t *)buf;
1763                 kprintf("spd %d len:%d\n", spd, len);
1764                 for( i = 0 ; i <= len && i < 32; i+= 4){
1765                         kprintf("0x%08x ", ntohl(qld[i/4]));
1766                         if((i % 16) == 15) kprintf("\n");
1767                 }
1768                 if((i % 16) != 15) kprintf("\n");
1769         }
1770 #endif
1771         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1772         tcode = fp->mode.common.tcode;
1773         switch (tcode) {
1774         case FWTCODE_WRES:
1775         case FWTCODE_RRESQ:
1776         case FWTCODE_RRESB:
1777         case FWTCODE_LRES:
1778                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1779                                         fp->mode.hdr.tlrt >> 2);
1780                 if(rb->xfer == NULL) {
1781                         kprintf("fw_rcv: unknown response "
1782                             "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1783                             tcode_str[tcode], tcode,
1784                             fp->mode.hdr.src,
1785                             fp->mode.hdr.tlrt >> 2,
1786                             fp->mode.hdr.tlrt & 3,
1787                             fp->mode.rresq.data);
1788 #if 1
1789                         kprintf("try ad-hoc work around!!\n");
1790                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1791                                         (fp->mode.hdr.tlrt >> 2)^3);
1792                         if (rb->xfer == NULL) {
1793                                 kprintf("no use...\n");
1794                                 goto err;
1795                         }
1796 #else
1797                         goto err;
1798 #endif
1799                 }
1800                 fw_rcv_copy(rb);
1801                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1802                         rb->xfer->resp = EIO;
1803                 else
1804                         rb->xfer->resp = 0;
1805                 /* make sure the packet is drained in AT queue */
1806                 oldstate = rb->xfer->state;
1807                 rb->xfer->state = FWXF_RCVD;
1808                 switch (oldstate) {
1809                 case FWXF_SENT:
1810                         fw_xfer_done(rb->xfer);
1811                         break;
1812                 case FWXF_START:
1813 #if 0
1814                         if (firewire_debug)
1815                                 kprintf("not sent yet tl=%x\n", rb->xfer->tl);
1816 #endif
1817                         break;
1818                 default:
1819                         kprintf("unexpected state %d\n", rb->xfer->state);
1820                 }
1821                 return;
1822         case FWTCODE_WREQQ:
1823         case FWTCODE_WREQB:
1824         case FWTCODE_RREQQ:
1825         case FWTCODE_RREQB:
1826         case FWTCODE_LREQ:
1827                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1828                         fp->mode.rreqq.dest_lo);
1829                 if(bind == NULL){
1830                         kprintf("Unknown service addr 0x%04x:0x%08x %s(%x)"
1831                             " src=0x%x data=%x\n",
1832                             fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo,
1833                             tcode_str[tcode], tcode,
1834                             fp->mode.hdr.src, ntohl(fp->mode.wreqq.data));
1835                         if (rb->fc->status == FWBUSRESET) {
1836                                 kprintf("fw_rcv: cannot respond(bus reset)!\n");
1837                                 goto err;
1838                         }
1839                         rb->xfer = fw_xfer_alloc(M_FWXFER);
1840                         if(rb->xfer == NULL){
1841                                 return;
1842                         }
1843                         rb->xfer->send.spd = rb->spd;
1844                         rb->xfer->send.pay_len = 0;
1845                         resfp = &rb->xfer->send.hdr;
1846                         switch (tcode) {
1847                         case FWTCODE_WREQQ:
1848                         case FWTCODE_WREQB:
1849                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
1850                                 break;
1851                         case FWTCODE_RREQQ:
1852                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
1853                                 break;
1854                         case FWTCODE_RREQB:
1855                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
1856                                 break;
1857                         case FWTCODE_LREQ:
1858                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
1859                                 break;
1860                         }
1861                         resfp->mode.hdr.dst = fp->mode.hdr.src;
1862                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
1863                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
1864                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
1865                         resfp->mode.rresb.extcode = 0;
1866                         resfp->mode.rresb.len = 0;
1867 /*
1868                         rb->xfer->act.hand = fw_asy_callback;
1869 */
1870                         rb->xfer->act.hand = fw_xfer_free;
1871                         if(fw_asyreq(rb->fc, -1, rb->xfer)){
1872                                 fw_xfer_free(rb->xfer);
1873                                 return;
1874                         }
1875                         goto err;
1876                 }
1877                 len = 0;
1878                 for (i = 0; i < rb->nvec; i ++)
1879                         len += rb->vec[i].iov_len;
1880                 switch(bind->act_type){
1881                 case FWACT_XFER:
1882                         crit_enter();
1883                         rb->xfer = STAILQ_FIRST(&bind->xferlist);
1884                         if (rb->xfer == NULL) {
1885                                 kprintf("Discard a packet for this bind.\n");
1886                                 crit_exit();
1887                                 goto err;
1888                         }
1889                         STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1890                         crit_exit();
1891                         fw_rcv_copy(rb);
1892                         rb->xfer->act.hand(rb->xfer);
1893                         return;
1894                         break;
1895                 case FWACT_CH:
1896                         if(rb->fc->ir[bind->sub]->queued >=
1897                                 rb->fc->ir[bind->sub]->maxq){
1898                                 device_printf(rb->fc->bdev,
1899                                         "Discard a packet %x %d\n",
1900                                         bind->sub,
1901                                         rb->fc->ir[bind->sub]->queued);
1902                                 goto err;
1903                         }
1904                         crit_enter();
1905                         rb->xfer = STAILQ_FIRST(&bind->xferlist);
1906                         if (rb->xfer == NULL) {
1907                                 kprintf("Discard packet for this bind\n");
1908                                 goto err;
1909                         }
1910                         STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1911                         crit_exit();
1912                         fw_rcv_copy(rb);
1913                         crit_enter();
1914                         rb->fc->ir[bind->sub]->queued++;
1915                         STAILQ_INSERT_TAIL(&rb->fc->ir[bind->sub]->q,
1916                             rb->xfer, link);
1917                         crit_exit();
1918
1919                         wakeup((caddr_t)rb->fc->ir[bind->sub]);
1920
1921                         return;
1922                         break;
1923                 default:
1924                         goto err;
1925                         break;
1926                 }
1927                 break;
1928 #if 0 /* shouldn't happen ?? or for GASP */
1929         case FWTCODE_STREAM:
1930         {
1931                 struct fw_xferq *xferq;
1932
1933                 xferq = rb->fc->ir[sub];
1934 #if 0
1935                 kprintf("stream rcv dma %d len %d off %d spd %d\n",
1936                         sub, len, off, spd);
1937 #endif
1938                 if(xferq->queued >= xferq->maxq) {
1939                         kprintf("receive queue is full\n");
1940                         goto err;
1941                 }
1942                 /* XXX get xfer from xfer queue, we don't need copy for
1943                         per packet mode */
1944                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
1945                                                 vec[0].iov_len);
1946                 if (rb->xfer == NULL) goto err;
1947                 fw_rcv_copy(rb)
1948                 crit_enter();
1949                 xferq->queued++;
1950                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
1951                 crit_exit();
1952                 sc = device_get_softc(rb->fc->bdev);
1953                 KNOTE(&xferq->rkq.ki_note, 0);
1954                 if (xferq->flag & FWXFERQ_WAKEUP) {
1955                         xferq->flag &= ~FWXFERQ_WAKEUP;
1956                         wakeup((caddr_t)xferq);
1957                 }
1958                 if (xferq->flag & FWXFERQ_HANDLER) {
1959                         xferq->hand(xferq);
1960                 }
1961                 return;
1962                 break;
1963         }
1964 #endif
1965         default:
1966                 kprintf("fw_rcv: unknow tcode %d\n", tcode);
1967                 break;
1968         }
1969 err:
1970         return;
1971 }
1972
1973 /*
1974  * Post process for Bus Manager election process.
1975  */
1976 static void
1977 fw_try_bmr_callback(struct fw_xfer *xfer)
1978 {
1979         struct firewire_comm *fc;
1980         int bmr;
1981
1982         if (xfer == NULL)
1983                 return;
1984         fc = xfer->fc;
1985         if (xfer->resp != 0)
1986                 goto error;
1987         if (xfer->recv.payload == NULL)
1988                 goto error;
1989         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
1990                 goto error;
1991
1992         bmr = ntohl(xfer->recv.payload[0]);
1993         if (bmr == 0x3f)
1994                 bmr = fc->nodeid;
1995
1996         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
1997         fw_xfer_free_buf(xfer);
1998         fw_bmr(fc);
1999         return;
2000
2001 error:
2002         device_printf(fc->bdev, "bus manager election failed\n");
2003         fw_xfer_free_buf(xfer);
2004 }
2005
2006
2007 /*
2008  * To candidate Bus Manager election process.
2009  */
2010 static void
2011 fw_try_bmr(void *arg)
2012 {
2013         struct fw_xfer *xfer;
2014         struct firewire_comm *fc = (struct firewire_comm *)arg;
2015         struct fw_pkt *fp;
2016         int err = 0;
2017
2018         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2019         if(xfer == NULL){
2020                 return;
2021         }
2022         xfer->send.spd = 0;
2023         fc->status = FWBUSMGRELECT;
2024
2025         fp = &xfer->send.hdr;
2026         fp->mode.lreq.dest_hi = 0xffff;
2027         fp->mode.lreq.tlrt = 0;
2028         fp->mode.lreq.tcode = FWTCODE_LREQ;
2029         fp->mode.lreq.pri = 0;
2030         fp->mode.lreq.src = 0;
2031         fp->mode.lreq.len = 8;
2032         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2033         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2034         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2035         xfer->send.payload[0] = htonl(0x3f);
2036         xfer->send.payload[1] = htonl(fc->nodeid);
2037         xfer->act.hand = fw_try_bmr_callback;
2038
2039         err = fw_asyreq(fc, -1, xfer);
2040         if(err){
2041                 fw_xfer_free_buf(xfer);
2042                 return;
2043         }
2044         return;
2045 }
2046
2047 #ifdef FW_VMACCESS
2048 /*
2049  * Software implementation for physical memory block access.
2050  * XXX:Too slow, usef for debug purpose only.
2051  */
2052 static void
2053 fw_vmaccess(struct fw_xfer *xfer){
2054         struct fw_pkt *rfp, *sfp = NULL;
2055         u_int32_t *ld = (u_int32_t *)xfer->recv.buf;
2056
2057         kprintf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2058                         xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
2059         kprintf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2060         if(xfer->resp != 0){
2061                 fw_xfer_free( xfer);
2062                 return;
2063         }
2064         if(xfer->recv.buf == NULL){
2065                 fw_xfer_free( xfer);
2066                 return;
2067         }
2068         rfp = (struct fw_pkt *)xfer->recv.buf;
2069         switch(rfp->mode.hdr.tcode){
2070                 /* XXX need fix for 64bit arch */
2071                 case FWTCODE_WREQB:
2072                         xfer->send.buf = kmalloc(12, M_FW, M_WAITOK);
2073                         xfer->send.len = 12;
2074                         sfp = (struct fw_pkt *)xfer->send.buf;
2075                         bcopy(rfp->mode.wreqb.payload,
2076                                 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
2077                         sfp->mode.wres.tcode = FWTCODE_WRES;
2078                         sfp->mode.wres.rtcode = 0;
2079                         break;
2080                 case FWTCODE_WREQQ:
2081                         xfer->send.buf = kmalloc(12, M_FW, M_WAITOK);
2082                         xfer->send.len = 12;
2083                         sfp->mode.wres.tcode = FWTCODE_WRES;
2084                         *((u_int32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
2085                         sfp->mode.wres.rtcode = 0;
2086                         break;
2087                 case FWTCODE_RREQB:
2088                         xfer->send.buf = kmalloc(16 + rfp->mode.rreqb.len, M_FW, M_WAITOK);
2089                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2090                         sfp = (struct fw_pkt *)xfer->send.buf;
2091                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2092                                 sfp->mode.rresb.payload, (u_int16_t)ntohs(rfp->mode.rreqb.len));
2093                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2094                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2095                         sfp->mode.rresb.rtcode = 0;
2096                         sfp->mode.rresb.extcode = 0;
2097                         break;
2098                 case FWTCODE_RREQQ:
2099                         xfer->send.buf = kmalloc(16, M_FW, M_WAITOK);
2100                         xfer->send.len = 16;
2101                         sfp = (struct fw_pkt *)xfer->send.buf;
2102                         sfp->mode.rresq.data = *(u_int32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2103                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2104                         sfp->mode.rresb.rtcode = 0;
2105                         break;
2106                 default:
2107                         fw_xfer_free( xfer);
2108                         return;
2109         }
2110         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2111         xfer->dst = ntohs(rfp->mode.hdr.src);
2112         xfer->act.hand = fw_xfer_free;
2113         xfer->retry_req = fw_asybusy;
2114
2115         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2116         sfp->mode.hdr.pri = 0;
2117
2118         fw_asyreq(xfer->fc, -1, xfer);
2119 /**/
2120         return;
2121 }
2122 #endif
2123
2124 /*
2125  * CRC16 check-sum for IEEE1394 register blocks.
2126  */
2127 u_int16_t
2128 fw_crc16(u_int32_t *ptr, u_int32_t len){
2129         u_int32_t i, sum, crc = 0;
2130         int shift;
2131         len = (len + 3) & ~3;
2132         for(i = 0 ; i < len ; i+= 4){
2133                 for( shift = 28 ; shift >= 0 ; shift -= 4){
2134                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2135                         crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2136                 }
2137                 crc &= 0xffff;
2138         }
2139         return((u_int16_t) crc);
2140 }
2141
2142 static int
2143 fw_bmr(struct firewire_comm *fc)
2144 {
2145         struct fw_device fwdev;
2146         union fw_self_id *self_id;
2147         int cmstr;
2148         u_int32_t quad;
2149
2150         /* Check to see if the current root node is cycle master capable */
2151         self_id = &fc->topology_map->self_id[fc->max_node];
2152         if (fc->max_node > 0) {
2153                 /* XXX check cmc bit of businfo block rather than contender */
2154                 if (self_id->p0.link_active && self_id->p0.contender)
2155                         cmstr = fc->max_node;
2156                 else {
2157                         device_printf(fc->bdev,
2158                                 "root node is not cycle master capable\n");
2159                         /* XXX shall we be the cycle master? */
2160                         cmstr = fc->nodeid;
2161                         /* XXX need bus reset */
2162                 }
2163         } else
2164                 cmstr = -1;
2165
2166         device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID));
2167         if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2168                 /* We are not the bus manager */
2169                 kprintf("\n");
2170                 return(0);
2171         }
2172         kprintf("(me)\n");
2173
2174         /* Optimize gapcount */
2175         if(fc->max_hop <= MAX_GAPHOP )
2176                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2177         /* If we are the cycle master, nothing to do */
2178         if (cmstr == fc->nodeid || cmstr == -1)
2179                 return 0;
2180         /* Bus probe has not finished, make dummy fwdev for cmstr */
2181         bzero(&fwdev, sizeof(fwdev));
2182         fwdev.fc = fc;
2183         fwdev.dst = cmstr;
2184         fwdev.speed = 0;
2185         fwdev.maxrec = 8; /* 512 */
2186         fwdev.status = FWDEVINIT;
2187         /* Set cmstr bit on the cycle master */
2188         quad = htonl(1 << 8);
2189         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2190                 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2191
2192         return 0;
2193 }
2194
2195 static int
2196 fw_modevent(module_t mode, int type, void *data)
2197 {
2198         int err = 0;
2199 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2200         static eventhandler_tag fwdev_ehtag = NULL;
2201 #endif
2202
2203         switch (type) {
2204         case MOD_LOAD:
2205 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2206                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2207                                                 fwdev_clone, 0, 1000);
2208 #endif
2209                 break;
2210         case MOD_UNLOAD:
2211 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2212                 if (fwdev_ehtag != NULL)
2213                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2214 #endif
2215                 break;
2216         case MOD_SHUTDOWN:
2217                 break;
2218         }
2219         return (err);
2220 }
2221
2222 /*
2223  * This causes the firewire identify to be called for any attached fwohci
2224  * device in the system.
2225  */
2226 DECLARE_DUMMY_MODULE(firewire);
2227 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0);
2228 MODULE_VERSION(firewire, 1);