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 1.6 2004/02/05 17:51:43 joerg 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/sysctl.h>
  47
  48 #if defined(__DragonFly__) || __FreeBSD_version < 500000
  49 #include <machine/clock.h>      /* for DELAY() */
  50 #endif
  51
  52 #include <sys/bus.h>            /* used by smbus and newbus */
  53 #include <machine/bus.h>
  54
  55 #ifdef __DragonFly__
  56 #include "firewire.h"
  57 #include "firewirereg.h"
  58 #include "fwmem.h"
  59 #include "iec13213.h"
  60 #include "iec68113.h"
  61 #else
  62 #include <dev/firewire/firewire.h>
  63 #include <dev/firewire/firewirereg.h>
  64 #include <dev/firewire/fwmem.h>
  65 #include <dev/firewire/iec13213.h>
  66 #include <dev/firewire/iec68113.h>
  67 #endif
  68
  69 struct crom_src_buf {
  70         struct crom_src src;
  71         struct crom_chunk root;
  72         struct crom_chunk vendor;
  73         struct crom_chunk hw;
  74 };
  75
  76 int firewire_debug=0, try_bmr=1, hold_count=3;
  77 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  78         "FireWire driver debug flag");
  79 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
  80 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  81         "Try to be a bus manager");
  82 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  83         "Number of count of bus resets for removing lost device information");
  84
  85 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  86 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  87
  88 #define FW_MAXASYRTY 4
  89
  90 devclass_t firewire_devclass;
  91
  92 static void firewire_identify   (driver_t *, device_t);
  93 static int firewire_probe       (device_t);
  94 static int firewire_attach      (device_t);
  95 static int firewire_detach      (device_t);
  96 static int firewire_resume      (device_t);
  97 #if 0
  98 static int firewire_shutdown    (device_t);
  99 #endif
 100 static device_t firewire_add_child   (device_t, int, const char *, int);
 101 static void fw_try_bmr (void *);
 102 static void fw_try_bmr_callback (struct fw_xfer *);
 103 static void fw_asystart (struct fw_xfer *);
 104 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
 105 static void fw_bus_probe (struct firewire_comm *);
 106 static void fw_bus_explore (struct firewire_comm *);
 107 static void fw_bus_explore_callback (struct fw_xfer *);
 108 static void fw_attach_dev (struct firewire_comm *);
 109 #ifdef FW_VMACCESS
 110 static void fw_vmaccess (struct fw_xfer *);
 111 #endif
 112 struct fw_xfer *asyreqq (struct firewire_comm *, u_int8_t, u_int8_t, u_int8_t,
 113         u_int32_t, u_int32_t, void (*)(struct fw_xfer *));
 114 static int fw_bmr (struct firewire_comm *);
 115
 116 static device_method_t firewire_methods[] = {
 117         /* Device interface */
 118         DEVMETHOD(device_identify,      firewire_identify),
 119         DEVMETHOD(device_probe,         firewire_probe),
 120         DEVMETHOD(device_attach,        firewire_attach),
 121         DEVMETHOD(device_detach,        firewire_detach),
 122         DEVMETHOD(device_suspend,       bus_generic_suspend),
 123         DEVMETHOD(device_resume,        firewire_resume),
 124         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 125
 126         /* Bus interface */
 127         DEVMETHOD(bus_add_child,        firewire_add_child),
 128         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 129
 130         { 0, 0 }
 131 };
 132 char *linkspeed[] = {
 133         "S100", "S200", "S400", "S800",
 134         "S1600", "S3200", "undef", "undef"
 135 };
 136
 137 static char *tcode_str[] = {
 138         "WREQQ", "WREQB", "WRES",   "undef",
 139         "RREQQ", "RREQB", "RRESQ",  "RRESB",
 140         "CYCS",  "LREQ",  "STREAM", "LRES",
 141         "undef", "undef", "PHY",    "undef"
 142 };
 143
 144 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
 145 #define MAX_GAPHOP 15
 146 u_int gap_cnt[] = { 5,  5,  7,  8, 10, 13, 16, 18,
 147                    21, 24, 26, 29, 32, 35, 37, 40};
 148
 149 static driver_t firewire_driver = {
 150         "firewire",
 151         firewire_methods,
 152         sizeof(struct firewire_softc),
 153 };
 154
 155 /*
 156  * Lookup fwdev by node id.
 157  */
 158 struct fw_device *
 159 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
 160 {
 161         struct fw_device *fwdev;
 162         int s;
 163
 164         s = splfw();
 165         STAILQ_FOREACH(fwdev, &fc->devices, link)
 166                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 167                         break;
 168         splx(s);
 169
 170         return fwdev;
 171 }
 172
 173 /*
 174  * Lookup fwdev by EUI64.
 175  */
 176 struct fw_device *
 177 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
 178 {
 179         struct fw_device *fwdev;
 180         int s;
 181
 182         s = splfw();
 183         STAILQ_FOREACH(fwdev, &fc->devices, link)
 184                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 185                         break;
 186         splx(s);
 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                 printf("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                 printf("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                 printf("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                 printf("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                 printf("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 fw_asybusy(struct fw_xfer *xfer){
 278         printf("fw_asybusy\n");
 279 /*
 280         xfer->ch =  timeout((timeout_t *)fw_asystart, (void *)xfer, 20000);
 281 */
 282 #if 0
 283         DELAY(20000);
 284 #endif
 285         fw_asystart(xfer);
 286         return;
 287 }
 288
 289 /*
 290  * Async. request with given xfer structure.
 291  */
 292 static void
 293 fw_asystart(struct fw_xfer *xfer)
 294 {
 295         struct firewire_comm *fc = xfer->fc;
 296         int s;
 297         if(xfer->retry++ >= fc->max_asyretry){
 298                 device_printf(fc->bdev, "max_asyretry exceeded\n");
 299                 xfer->resp = EBUSY;
 300                 xfer->state = FWXF_BUSY;
 301                 xfer->act.hand(xfer);
 302                 return;
 303         }
 304 #if 0 /* XXX allow bus explore packets only after bus rest */
 305         if (fc->status < FWBUSEXPLORE) {
 306                 xfer->resp = EAGAIN;
 307                 xfer->state = FWXF_BUSY;
 308                 if (xfer->act.hand != NULL)
 309                         xfer->act.hand(xfer);
 310                 return;
 311         }
 312 #endif
 313         s = splfw();
 314         xfer->state = FWXF_INQ;
 315         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 316         xfer->q->queued ++;
 317         splx(s);
 318         /* XXX just queue for mbuf */
 319         if (xfer->mbuf == NULL)
 320                 xfer->q->start(fc);
 321         return;
 322 }
 323
 324 static void
 325 firewire_identify(driver_t *driver, device_t parent)
 326 {
 327         BUS_ADD_CHILD(parent, 0, "firewire", -1);
 328 }
 329
 330 static int
 331 firewire_probe(device_t dev)
 332 {
 333         device_set_desc(dev, "IEEE1394(FireWire) bus");
 334         return (0);
 335 }
 336
 337 static void
 338 firewire_xfer_timeout(struct firewire_comm *fc)
 339 {
 340         struct fw_xfer *xfer;
 341         struct tlabel *tl;
 342         struct timeval tv;
 343         struct timeval split_timeout;
 344         int i, s;
 345
 346         split_timeout.tv_sec = 0;
 347         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 348
 349         microtime(&tv);
 350         timevalsub(&tv, &split_timeout);
 351
 352         s = splfw();
 353         for (i = 0; i < 0x40; i ++) {
 354                 while ((tl = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 355                         xfer = tl->xfer;
 356                         if (timevalcmp(&xfer->tv, &tv, >))
 357                                 /* the rests are newer than this */
 358                                 break;
 359                         if (xfer->state == FWXF_START)
 360                                 /* not sent yet */
 361                                 break;
 362                         device_printf(fc->bdev,
 363                                 "split transaction timeout dst=0x%x tl=0x%x state=%d\n",
 364                                 xfer->send.hdr.mode.hdr.dst, i, xfer->state);
 365                         xfer->resp = ETIMEDOUT;
 366                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], link);
 367                         fw_xfer_done(xfer);
 368                 }
 369         }
 370         splx(s);
 371 }
 372
 373 #define WATCHDOC_HZ 10
 374 static void
 375 firewire_watchdog(void *arg)
 376 {
 377         struct firewire_comm *fc;
 378         static int watchdoc_clock = 0;
 379
 380         fc = (struct firewire_comm *)arg;
 381
 382         /*
 383          * At boot stage, the device interrupt is disabled and
 384          * We encounter a timeout easily. To avoid this,
 385          * ignore clock interrupt for a while.
 386          */
 387         if (watchdoc_clock > WATCHDOC_HZ * 15) {
 388                 firewire_xfer_timeout(fc);
 389                 fc->timeout(fc);
 390         } else
 391                 watchdoc_clock ++;
 392
 393         callout_reset(&fc->timeout_callout, hz / WATCHDOC_HZ,
 394                         (void *)firewire_watchdog, (void *)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 = (struct firewire_comm *)device_get_softc(pa);
 409         sc->fc = fc;
 410         fc->status = FWBUSNOTREADY;
 411
 412         unit = device_get_unit(dev);
 413         if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
 414
 415         fwdev_makedev(sc);
 416
 417         CALLOUT_INIT(&sc->fc->timeout_callout);
 418         CALLOUT_INIT(&sc->fc->bmr_callout);
 419         CALLOUT_INIT(&sc->fc->retry_probe_callout);
 420         CALLOUT_INIT(&sc->fc->busprobe_callout);
 421
 422         callout_reset(&sc->fc->timeout_callout, hz,
 423                         (void *)firewire_watchdog, (void *)sc->fc);
 424
 425         /* Locate our children */
 426         bus_generic_probe(dev);
 427
 428         /* launch attachement of the added children */
 429         bus_generic_attach(dev);
 430
 431         /* bus_reset */
 432         fw_busreset(fc);
 433         fc->ibr(fc);
 434
 435         return 0;
 436 }
 437
 438 /*
 439  * Attach it as child.
 440  */
 441 static device_t
 442 firewire_add_child(device_t dev, int order, const char *name, int unit)
 443 {
 444         device_t child;
 445         struct firewire_softc *sc;
 446
 447         sc = (struct firewire_softc *)device_get_softc(dev);
 448         child = device_add_child(dev, name, unit);
 449         if (child) {
 450                 device_set_ivars(child, sc->fc);
 451                 device_probe_and_attach(child);
 452         }
 453
 454         return child;
 455 }
 456
 457 static int
 458 firewire_resume(device_t dev)
 459 {
 460         struct firewire_softc *sc;
 461
 462         sc = (struct firewire_softc *)device_get_softc(dev);
 463         sc->fc->status = FWBUSNOTREADY;
 464
 465         bus_generic_resume(dev);
 466
 467         return(0);
 468 }
 469
 470 /*
 471  * Dettach it.
 472  */
 473 static int
 474 firewire_detach(device_t dev)
 475 {
 476         struct firewire_softc *sc;
 477         struct csrdir *csrd, *next;
 478         struct fw_device *fwdev, *fwdev_next;
 479         int err;
 480
 481         sc = (struct firewire_softc *)device_get_softc(dev);
 482         if ((err = fwdev_destroydev(sc)) != 0)
 483                 return err;
 484
 485         if ((err = bus_generic_detach(dev)) != 0)
 486                 return err;
 487
 488         callout_stop(&sc->fc->timeout_callout);
 489         callout_stop(&sc->fc->bmr_callout);
 490         callout_stop(&sc->fc->retry_probe_callout);
 491         callout_stop(&sc->fc->busprobe_callout);
 492
 493         /* XXX xfree_free and untimeout on all xfers */
 494         for (fwdev = STAILQ_FIRST(&sc->fc->devices); fwdev != NULL;
 495                                                         fwdev = fwdev_next) {
 496                 fwdev_next = STAILQ_NEXT(fwdev, link);
 497                 free(fwdev, M_FW);
 498         }
 499         for (csrd = SLIST_FIRST(&sc->fc->csrfree); csrd != NULL; csrd = next) {
 500                 next = SLIST_NEXT(csrd, link);
 501                 free(csrd, M_FW);
 502         }
 503         free(sc->fc->topology_map, M_FW);
 504         free(sc->fc->speed_map, M_FW);
 505         free(sc->fc->crom_src_buf, M_FW);
 506         return(0);
 507 }
 508 #if 0
 509 static int
 510 firewire_shutdown( device_t dev )
 511 {
 512         return 0;
 513 }
 514 #endif
 515
 516
 517 static void
 518 fw_xferq_drain(struct fw_xferq *xferq)
 519 {
 520         struct fw_xfer *xfer;
 521
 522         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 523                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 524                 xferq->queued --;
 525                 xfer->resp = EAGAIN;
 526                 fw_xfer_done(xfer);
 527         }
 528 }
 529
 530 void
 531 fw_drain_txq(struct firewire_comm *fc)
 532 {
 533         int i;
 534
 535         fw_xferq_drain(fc->atq);
 536         fw_xferq_drain(fc->ats);
 537         for(i = 0; i < fc->nisodma; i++)
 538                 fw_xferq_drain(fc->it[i]);
 539 }
 540
 541 static void
 542 fw_reset_csr(struct firewire_comm *fc)
 543 {
 544         int i;
 545
 546         CSRARC(fc, STATE_CLEAR)
 547                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 548         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 549         CSRARC(fc, NODE_IDS) = 0x3f;
 550
 551         CSRARC(fc, TOPO_MAP + 8) = 0;
 552         fc->irm = -1;
 553
 554         fc->max_node = -1;
 555
 556         for(i = 2; i < 0x100/4 - 2 ; i++){
 557                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 558         }
 559         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 560         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 561         CSRARC(fc, RESET_START) = 0;
 562         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 563         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 564         CSRARC(fc, CYCLE_TIME) = 0x0;
 565         CSRARC(fc, BUS_TIME) = 0x0;
 566         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 567         CSRARC(fc, BANDWIDTH_AV) = 4915;
 568         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 569         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 570         CSRARC(fc, IP_CHANNELS) = (1 << 31);
 571
 572         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 573         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 574         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 575                                 1 << 28 | 0xff << 16 | 0x09 << 8;
 576         CSRARC(fc, CONF_ROM + 0xc) = 0;
 577
 578 /* DV depend CSRs see blue book */
 579         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 580         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 581
 582         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
 583         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 584 }
 585
 586 static void
 587 fw_init_crom(struct firewire_comm *fc)
 588 {
 589         struct crom_src *src;
 590
 591         fc->crom_src_buf = (struct crom_src_buf *)
 592                 malloc(sizeof(struct crom_src_buf), M_FW, M_WAITOK | M_ZERO);
 593         if (fc->crom_src_buf == NULL)
 594                 return;
 595
 596         src = &fc->crom_src_buf->src;
 597         bzero(src, sizeof(struct crom_src));
 598
 599         /* BUS info sample */
 600         src->hdr.info_len = 4;
 601
 602         src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 603
 604         src->businfo.irmc = 1;
 605         src->businfo.cmc = 1;
 606         src->businfo.isc = 1;
 607         src->businfo.bmc = 1;
 608         src->businfo.pmc = 0;
 609         src->businfo.cyc_clk_acc = 100;
 610         src->businfo.max_rec = fc->maxrec;
 611         src->businfo.max_rom = MAXROM_4;
 612         src->businfo.generation = 1;
 613         src->businfo.link_spd = fc->speed;
 614
 615         src->businfo.eui64.hi = fc->eui.hi;
 616         src->businfo.eui64.lo = fc->eui.lo;
 617
 618         STAILQ_INIT(&src->chunk_list);
 619
 620         fc->crom_src = src;
 621         fc->crom_root = &fc->crom_src_buf->root;
 622 }
 623
 624 static void
 625 fw_reset_crom(struct firewire_comm *fc)
 626 {
 627         struct crom_src_buf *buf;
 628         struct crom_src *src;
 629         struct crom_chunk *root;
 630
 631         if (fc->crom_src_buf == NULL)
 632                 fw_init_crom(fc);
 633
 634         buf =  fc->crom_src_buf;
 635         src = fc->crom_src;
 636         root = fc->crom_root;
 637
 638         STAILQ_INIT(&src->chunk_list);
 639
 640         bzero(root, sizeof(struct crom_chunk));
 641         crom_add_chunk(src, NULL, root, 0);
 642         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 643         /* private company_id */
 644         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 645 #ifdef __DragonFly__
 646         crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
 647         crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
 648 #else
 649         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 650         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 651 #endif
 652         crom_add_simple_text(src, root, &buf->hw, hostname);
 653 }
 654
 655 /*
 656  * Called after bus reset.
 657  */
 658 void
 659 fw_busreset(struct firewire_comm *fc)
 660 {
 661         struct firewire_dev_comm *fdc;
 662         struct crom_src *src;
 663         device_t *devlistp;
 664         void *newrom;
 665         int i, devcnt;
 666
 667         switch(fc->status){
 668         case FWBUSMGRELECT:
 669                 callout_stop(&fc->bmr_callout);
 670                 break;
 671         default:
 672                 break;
 673         }
 674         fc->status = FWBUSRESET;
 675         fw_reset_csr(fc);
 676         fw_reset_crom(fc);
 677
 678         if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
 679                 for( i = 0 ; i < devcnt ; i++)
 680                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
 681                                 fdc = device_get_softc(devlistp[i]);
 682                                 if (fdc->post_busreset != NULL)
 683                                         fdc->post_busreset(fdc);
 684                         }
 685                 free(devlistp, M_TEMP);
 686         }
 687
 688         newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
 689         src = &fc->crom_src_buf->src;
 690         crom_load(src, (u_int32_t *)newrom, CROMSIZE);
 691         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 692                 /* bump generation and reload */
 693                 src->businfo.generation ++;
 694                 /* generation must be between 0x2 and 0xF */
 695                 if (src->businfo.generation < 2)
 696                         src->businfo.generation ++;
 697                 crom_load(src, (u_int32_t *)newrom, CROMSIZE);
 698                 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
 699         }
 700         free(newrom, M_FW);
 701 }
 702
 703 /* Call once after reboot */
 704 void fw_init(struct firewire_comm *fc)
 705 {
 706         int i;
 707         struct csrdir *csrd;
 708 #ifdef FW_VMACCESS
 709         struct fw_xfer *xfer;
 710         struct fw_bind *fwb;
 711 #endif
 712
 713         fc->max_asyretry = FW_MAXASYRTY;
 714
 715         fc->arq->queued = 0;
 716         fc->ars->queued = 0;
 717         fc->atq->queued = 0;
 718         fc->ats->queued = 0;
 719
 720         fc->arq->buf = NULL;
 721         fc->ars->buf = NULL;
 722         fc->atq->buf = NULL;
 723         fc->ats->buf = NULL;
 724
 725         fc->arq->flag = 0;
 726         fc->ars->flag = 0;
 727         fc->atq->flag = 0;
 728         fc->ats->flag = 0;
 729
 730         STAILQ_INIT(&fc->atq->q);
 731         STAILQ_INIT(&fc->ats->q);
 732
 733         for( i = 0 ; i < fc->nisodma ; i ++ ){
 734                 fc->it[i]->queued = 0;
 735                 fc->ir[i]->queued = 0;
 736
 737                 fc->it[i]->start = NULL;
 738                 fc->ir[i]->start = NULL;
 739
 740                 fc->it[i]->buf = NULL;
 741                 fc->ir[i]->buf = NULL;
 742
 743                 fc->it[i]->flag = FWXFERQ_STREAM;
 744                 fc->ir[i]->flag = FWXFERQ_STREAM;
 745
 746                 STAILQ_INIT(&fc->it[i]->q);
 747                 STAILQ_INIT(&fc->ir[i]->q);
 748
 749                 STAILQ_INIT(&fc->it[i]->binds);
 750                 STAILQ_INIT(&fc->ir[i]->binds);
 751         }
 752
 753         fc->arq->maxq = FWMAXQUEUE;
 754         fc->ars->maxq = FWMAXQUEUE;
 755         fc->atq->maxq = FWMAXQUEUE;
 756         fc->ats->maxq = FWMAXQUEUE;
 757
 758         for( i = 0 ; i < fc->nisodma ; i++){
 759                 fc->ir[i]->maxq = FWMAXQUEUE;
 760                 fc->it[i]->maxq = FWMAXQUEUE;
 761         }
 762 /* Initialize csr registers */
 763         fc->topology_map = (struct fw_topology_map *)malloc(
 764                                 sizeof(struct fw_topology_map),
 765                                 M_FW, M_NOWAIT | M_ZERO);
 766         fc->speed_map = (struct fw_speed_map *)malloc(
 767                                 sizeof(struct fw_speed_map),
 768                                 M_FW, M_NOWAIT | M_ZERO);
 769         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 770         CSRARC(fc, TOPO_MAP + 4) = 1;
 771         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 772         CSRARC(fc, SPED_MAP + 4) = 1;
 773
 774         STAILQ_INIT(&fc->devices);
 775
 776 /* Initialize csr ROM work space */
 777         SLIST_INIT(&fc->ongocsr);
 778         SLIST_INIT(&fc->csrfree);
 779         for( i = 0 ; i < FWMAXCSRDIR ; i++){
 780                 csrd = (struct csrdir *) malloc(sizeof(struct csrdir), M_FW,M_NOWAIT);
 781                 if(csrd == NULL) break;
 782                 SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
 783         }
 784
 785 /* Initialize Async handlers */
 786         STAILQ_INIT(&fc->binds);
 787         for( i = 0 ; i < 0x40 ; i++){
 788                 STAILQ_INIT(&fc->tlabels[i]);
 789         }
 790
 791 /* DV depend CSRs see blue book */
 792 #if 0
 793         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 794         CSRARC(fc, oPCR) = 0x8000007a;
 795         for(i = 4 ; i < 0x7c/4 ; i+=4){
 796                 CSRARC(fc, i + oPCR) = 0x8000007a;
 797         }
 798
 799         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 800         CSRARC(fc, iPCR) = 0x803f0000;
 801         for(i = 4 ; i < 0x7c/4 ; i+=4){
 802                 CSRARC(fc, i + iPCR) = 0x0;
 803         }
 804 #endif
 805
 806         fc->crom_src_buf = NULL;
 807
 808 #ifdef FW_VMACCESS
 809         xfer = fw_xfer_alloc();
 810         if(xfer == NULL) return;
 811
 812         fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT);
 813         if(fwb == NULL){
 814                 fw_xfer_free(xfer);
 815         }
 816         xfer->act.hand = fw_vmaccess;
 817         xfer->fc = fc;
 818         xfer->sc = NULL;
 819
 820         fwb->start_hi = 0x2;
 821         fwb->start_lo = 0;
 822         fwb->addrlen = 0xffffffff;
 823         fwb->xfer = xfer;
 824         fw_bindadd(fc, fwb);
 825 #endif
 826 }
 827
 828 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
 829     ((fwb)->end < (addr))?1:0)
 830
 831 /*
 832  * To lookup binded process from IEEE1394 address.
 833  */
 834 struct fw_bind *
 835 fw_bindlookup(struct firewire_comm *fc, u_int16_t dest_hi, u_int32_t dest_lo)
 836 {
 837         u_int64_t addr;
 838         struct fw_bind *tfw;
 839
 840         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 841         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 842                 if (tfw->act_type != FWACT_NULL && BIND_CMP(addr, tfw) == 0)
 843                         return(tfw);
 844         return(NULL);
 845 }
 846
 847 /*
 848  * To bind IEEE1394 address block to process.
 849  */
 850 int
 851 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 852 {
 853         struct fw_bind *tfw, *prev = NULL;
 854
 855         if (fwb->start > fwb->end) {
 856                 printf("%s: invalid range\n", __FUNCTION__);
 857                 return EINVAL;
 858         }
 859
 860         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 861                 if (fwb->end < tfw->start)
 862                         break;
 863                 prev = tfw;
 864         }
 865         if (prev == NULL) {
 866                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 867                 goto out;
 868         }
 869         if (prev->end < fwb->start) {
 870                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 871                 goto out;
 872         }
 873
 874         printf("%s: bind failed\n", __FUNCTION__);
 875         return (EBUSY);
 876
 877 out:
 878         if (fwb->act_type == FWACT_CH)
 879                 STAILQ_INSERT_HEAD(&fc->ir[fwb->sub]->binds, fwb, chlist);
 880         return (0);
 881 }
 882
 883 /*
 884  * To free IEEE1394 address block.
 885  */
 886 int
 887 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 888 {
 889 #if 0
 890         struct fw_xfer *xfer, *next;
 891 #endif
 892         struct fw_bind *tfw;
 893         int s;
 894
 895         s = splfw();
 896         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 897                 if (tfw == fwb) {
 898                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 899                         goto found;
 900                 }
 901
 902         printf("%s: no such bind\n", __FUNCTION__);
 903         splx(s);
 904         return (1);
 905 found:
 906 #if 0
 907         /* shall we do this? */
 908         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 909                 next = STAILQ_NEXT(xfer, link);
 910                 fw_xfer_free(xfer);
 911         }
 912         STAILQ_INIT(&fwb->xferlist);
 913 #endif
 914
 915         splx(s);
 916         return 0;
 917 }
 918
 919 /*
 920  * To free transaction label.
 921  */
 922 static void
 923 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
 924 {
 925         struct tlabel *tl;
 926         int s = splfw();
 927
 928         for( tl = STAILQ_FIRST(&fc->tlabels[xfer->tl]); tl != NULL;
 929                 tl = STAILQ_NEXT(tl, link)){
 930                 if(tl->xfer == xfer){
 931                         STAILQ_REMOVE(&fc->tlabels[xfer->tl], tl, tlabel, link);
 932                         free(tl, M_FW);
 933                         splx(s);
 934                         return;
 935                 }
 936         }
 937         splx(s);
 938         return;
 939 }
 940
 941 /*
 942  * To obtain XFER structure by transaction label.
 943  */
 944 static struct fw_xfer *
 945 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel)
 946 {
 947         struct fw_xfer *xfer;
 948         struct tlabel *tl;
 949         int s = splfw();
 950
 951         for( tl = STAILQ_FIRST(&fc->tlabels[tlabel]); tl != NULL;
 952                 tl = STAILQ_NEXT(tl, link)){
 953                 if(tl->xfer->send.hdr.mode.hdr.dst == node){
 954                         xfer = tl->xfer;
 955                         splx(s);
 956                         if (firewire_debug > 2)
 957                                 printf("fw_tl2xfer: found tl=%d\n", tlabel);
 958                         return(xfer);
 959                 }
 960         }
 961         if (firewire_debug > 1)
 962                 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
 963         splx(s);
 964         return(NULL);
 965 }
 966
 967 /*
 968  * To allocate IEEE1394 XFER structure.
 969  */
 970 struct fw_xfer *
 971 fw_xfer_alloc(struct malloc_type *type)
 972 {
 973         struct fw_xfer *xfer;
 974
 975         xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
 976         if (xfer == NULL)
 977                 return xfer;
 978
 979         xfer->malloc = type;
 980
 981         return xfer;
 982 }
 983
 984 struct fw_xfer *
 985 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
 986 {
 987         struct fw_xfer *xfer;
 988
 989         xfer = fw_xfer_alloc(type);
 990         xfer->send.pay_len = send_len;
 991         xfer->recv.pay_len = recv_len;
 992         if (xfer == NULL)
 993                 return(NULL);
 994         if (send_len > 0) {
 995                 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
 996                 if (xfer->send.payload == NULL) {
 997                         fw_xfer_free(xfer);
 998                         return(NULL);
 999                 }
1000         }
1001         if (recv_len > 0) {
1002                 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1003                 if (xfer->recv.payload == NULL) {
1004                         if (xfer->send.payload != NULL)
1005                                 free(xfer->send.payload, type);
1006                         fw_xfer_free(xfer);
1007                         return(NULL);
1008                 }
1009         }
1010         return(xfer);
1011 }
1012
1013 /*
1014  * IEEE1394 XFER post process.
1015  */
1016 void
1017 fw_xfer_done(struct fw_xfer *xfer)
1018 {
1019         if (xfer->act.hand == NULL) {
1020                 printf("act.hand == NULL\n");
1021                 return;
1022         }
1023
1024         if (xfer->fc == NULL)
1025                 panic("fw_xfer_done: why xfer->fc is NULL?");
1026
1027         xfer->act.hand(xfer);
1028 }
1029
1030 void
1031 fw_xfer_unload(struct fw_xfer* xfer)
1032 {
1033         int s;
1034
1035         if(xfer == NULL ) return;
1036         if(xfer->state == FWXF_INQ){
1037                 printf("fw_xfer_free FWXF_INQ\n");
1038                 s = splfw();
1039                 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1040                 xfer->q->queued --;
1041                 splx(s);
1042         }
1043         if (xfer->fc != NULL) {
1044 #if 1
1045                 if(xfer->state == FWXF_START)
1046                         /*
1047                          * This could happen if:
1048                          *  1. We call fwohci_arcv() before fwohci_txd().
1049                          *  2. firewire_watch() is called.
1050                          */
1051                         printf("fw_xfer_free FWXF_START\n");
1052 #endif
1053                 fw_tl_free(xfer->fc, xfer);
1054         }
1055         xfer->state = FWXF_INIT;
1056         xfer->resp = 0;
1057         xfer->retry = 0;
1058 }
1059 /*
1060  * To free IEEE1394 XFER structure.
1061  */
1062 void
1063 fw_xfer_free_buf( struct fw_xfer* xfer)
1064 {
1065         if (xfer == NULL) {
1066                 printf("%s: xfer == NULL\n", __FUNCTION__);
1067                 return;
1068         }
1069         fw_xfer_unload(xfer);
1070         if(xfer->send.payload != NULL){
1071                 free(xfer->send.payload, xfer->malloc);
1072         }
1073         if(xfer->recv.payload != NULL){
1074                 free(xfer->recv.payload, xfer->malloc);
1075         }
1076         free(xfer, xfer->malloc);
1077 }
1078
1079 void
1080 fw_xfer_free( struct fw_xfer* xfer)
1081 {
1082         if (xfer == NULL) {
1083                 printf("%s: xfer == NULL\n", __FUNCTION__);
1084                 return;
1085         }
1086         fw_xfer_unload(xfer);
1087         free(xfer, xfer->malloc);
1088 }
1089
1090 void
1091 fw_asy_callback_free(struct fw_xfer *xfer)
1092 {
1093 #if 0
1094         printf("asyreq done state=%d resp=%d\n",
1095                                 xfer->state, xfer->resp);
1096 #endif
1097         fw_xfer_free(xfer);
1098 }
1099
1100 /*
1101  * To configure PHY.
1102  */
1103 static void
1104 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1105 {
1106         struct fw_xfer *xfer;
1107         struct fw_pkt *fp;
1108
1109         fc->status = FWBUSPHYCONF;
1110
1111         xfer = fw_xfer_alloc(M_FWXFER);
1112         if (xfer == NULL)
1113                 return;
1114         xfer->fc = fc;
1115         xfer->retry_req = fw_asybusy;
1116         xfer->act.hand = fw_asy_callback_free;
1117
1118         fp = &xfer->send.hdr;
1119         fp->mode.ld[1] = 0;
1120         if (root_node >= 0)
1121                 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1122         if (gap_count >= 0)
1123                 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1124         fp->mode.ld[2] = ~fp->mode.ld[1];
1125 /* XXX Dangerous, how to pass PHY packet to device driver */
1126         fp->mode.common.tcode |= FWTCODE_PHY;
1127
1128         if (firewire_debug)
1129                 printf("send phy_config root_node=%d gap_count=%d\n",
1130                                                 root_node, gap_count);
1131         fw_asyreq(fc, -1, xfer);
1132 }
1133
1134 #if 0
1135 /*
1136  * Dump self ID.
1137  */
1138 static void
1139 fw_print_sid(u_int32_t sid)
1140 {
1141         union fw_self_id *s;
1142         s = (union fw_self_id *) &sid;
1143         printf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d"
1144                 " p0:%d p1:%d p2:%d i:%d m:%d\n",
1145                 s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1146                 s->p0.phy_speed, s->p0.phy_delay, s->p0.contender,
1147                 s->p0.power_class, s->p0.port0, s->p0.port1,
1148                 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1149 }
1150 #endif
1151
1152 /*
1153  * To receive self ID.
1154  */
1155 void fw_sidrcv(struct firewire_comm* fc, u_int32_t *sid, u_int len)
1156 {
1157         u_int32_t *p;
1158         union fw_self_id *self_id;
1159         u_int i, j, node, c_port = 0, i_branch = 0;
1160
1161         fc->sid_cnt = len /(sizeof(u_int32_t) * 2);
1162         fc->status = FWBUSINIT;
1163         fc->max_node = fc->nodeid & 0x3f;
1164         CSRARC(fc, NODE_IDS) = ((u_int32_t)fc->nodeid) << 16;
1165         fc->status = FWBUSCYMELECT;
1166         fc->topology_map->crc_len = 2;
1167         fc->topology_map->generation ++;
1168         fc->topology_map->self_id_count = 0;
1169         fc->topology_map->node_count = 0;
1170         fc->speed_map->generation ++;
1171         fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1172         self_id = &fc->topology_map->self_id[0];
1173         for(i = 0; i < fc->sid_cnt; i ++){
1174                 if (sid[1] != ~sid[0]) {
1175                         printf("fw_sidrcv: invalid self-id packet\n");
1176                         sid += 2;
1177                         continue;
1178                 }
1179                 *self_id = *((union fw_self_id *)sid);
1180                 fc->topology_map->crc_len++;
1181                 if(self_id->p0.sequel == 0){
1182                         fc->topology_map->node_count ++;
1183                         c_port = 0;
1184 #if 0
1185                         fw_print_sid(sid[0]);
1186 #endif
1187                         node = self_id->p0.phy_id;
1188                         if(fc->max_node < node){
1189                                 fc->max_node = self_id->p0.phy_id;
1190                         }
1191                         /* XXX I'm not sure this is the right speed_map */
1192                         fc->speed_map->speed[node][node]
1193                                         = self_id->p0.phy_speed;
1194                         for (j = 0; j < node; j ++) {
1195                                 fc->speed_map->speed[j][node]
1196                                         = fc->speed_map->speed[node][j]
1197                                         = min(fc->speed_map->speed[j][j],
1198                                                         self_id->p0.phy_speed);
1199                         }
1200                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1201                           (self_id->p0.link_active && self_id->p0.contender)) {
1202                                 fc->irm = self_id->p0.phy_id;
1203                         }
1204                         if(self_id->p0.port0 >= 0x2){
1205                                 c_port++;
1206                         }
1207                         if(self_id->p0.port1 >= 0x2){
1208                                 c_port++;
1209                         }
1210                         if(self_id->p0.port2 >= 0x2){
1211                                 c_port++;
1212                         }
1213                 }
1214                 if(c_port > 2){
1215                         i_branch += (c_port - 2);
1216                 }
1217                 sid += 2;
1218                 self_id++;
1219                 fc->topology_map->self_id_count ++;
1220         }
1221         device_printf(fc->bdev, "%d nodes", fc->max_node + 1);
1222         /* CRC */
1223         fc->topology_map->crc = fw_crc16(
1224                         (u_int32_t *)&fc->topology_map->generation,
1225                         fc->topology_map->crc_len * 4);
1226         fc->speed_map->crc = fw_crc16(
1227                         (u_int32_t *)&fc->speed_map->generation,
1228                         fc->speed_map->crc_len * 4);
1229         /* byteswap and copy to CSR */
1230         p = (u_int32_t *)fc->topology_map;
1231         for (i = 0; i <= fc->topology_map->crc_len; i++)
1232                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1233         p = (u_int32_t *)fc->speed_map;
1234         CSRARC(fc, SPED_MAP) = htonl(*p++);
1235         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1236         /* don't byte-swap u_int8_t array */
1237         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1238
1239         fc->max_hop = fc->max_node - i_branch;
1240         printf(", maxhop <= %d", fc->max_hop);
1241
1242         if(fc->irm == -1 ){
1243                 printf(", Not found IRM capable node");
1244         }else{
1245                 printf(", cable IRM = %d", fc->irm);
1246                 if (fc->irm == fc->nodeid)
1247                         printf(" (me)");
1248         }
1249         printf("\n");
1250
1251         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1252                 if (fc->irm == fc->nodeid) {
1253                         fc->status = FWBUSMGRDONE;
1254                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1255                         fw_bmr(fc);
1256                 } else {
1257                         fc->status = FWBUSMGRELECT;
1258                         callout_reset(&fc->bmr_callout, hz/8,
1259                                 (void *)fw_try_bmr, (void *)fc);
1260                 }
1261         } else
1262                 fc->status = FWBUSMGRDONE;
1263
1264         callout_reset(&fc->busprobe_callout, hz/4,
1265                         (void *)fw_bus_probe, (void *)fc);
1266 }
1267
1268 /*
1269  * To probe devices on the IEEE1394 bus.
1270  */
1271 static void
1272 fw_bus_probe(struct firewire_comm *fc)
1273 {
1274         int s;
1275         struct fw_device *fwdev;
1276
1277         s = splfw();
1278         fc->status = FWBUSEXPLORE;
1279         fc->retry_count = 0;
1280
1281         /* Invalidate all devices, just after bus reset. */
1282         STAILQ_FOREACH(fwdev, &fc->devices, link)
1283                 if (fwdev->status != FWDEVINVAL) {
1284                         fwdev->status = FWDEVINVAL;
1285                         fwdev->rcnt = 0;
1286                 }
1287
1288         fc->ongonode = 0;
1289         fc->ongoaddr = CSRROMOFF;
1290         fc->ongodev = NULL;
1291         fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
1292         fw_bus_explore(fc);
1293         splx(s);
1294 }
1295
1296 /*
1297  * To collect device informations on the IEEE1394 bus.
1298  */
1299 static void
1300 fw_bus_explore(struct firewire_comm *fc )
1301 {
1302         int err = 0;
1303         struct fw_device *fwdev, *pfwdev, *tfwdev;
1304         u_int32_t addr;
1305         struct fw_xfer *xfer;
1306         struct fw_pkt *fp;
1307
1308         if(fc->status != FWBUSEXPLORE)
1309                 return;
1310
1311 loop:
1312         if(fc->ongonode == fc->nodeid) fc->ongonode++;
1313
1314         if(fc->ongonode > fc->max_node) goto done;
1315         if(fc->ongonode >= 0x3f) goto done;
1316
1317         /* check link */
1318         /* XXX we need to check phy_id first */
1319         if (!fc->topology_map->self_id[fc->ongonode].p0.link_active) {
1320                 if (firewire_debug)
1321                         printf("node%d: link down\n", fc->ongonode);
1322                 fc->ongonode++;
1323                 goto loop;
1324         }
1325
1326         if(fc->ongoaddr <= CSRROMOFF &&
1327                 fc->ongoeui.hi == 0xffffffff &&
1328                 fc->ongoeui.lo == 0xffffffff ){
1329                 fc->ongoaddr = CSRROMOFF;
1330                 addr = 0xf0000000 | fc->ongoaddr;
1331         }else if(fc->ongoeui.hi == 0xffffffff ){
1332                 fc->ongoaddr = CSRROMOFF + 0xc;
1333                 addr = 0xf0000000 | fc->ongoaddr;
1334         }else if(fc->ongoeui.lo == 0xffffffff ){
1335                 fc->ongoaddr = CSRROMOFF + 0x10;
1336                 addr = 0xf0000000 | fc->ongoaddr;
1337         }else if(fc->ongodev == NULL){
1338                 STAILQ_FOREACH(fwdev, &fc->devices, link)
1339                         if (FW_EUI64_EQUAL(fwdev->eui, fc->ongoeui))
1340                                 break;
1341                 if(fwdev != NULL){
1342                         fwdev->dst = fc->ongonode;
1343                         fwdev->status = FWDEVINIT;
1344                         fc->ongodev = fwdev;
1345                         fc->ongoaddr = CSRROMOFF;
1346                         addr = 0xf0000000 | fc->ongoaddr;
1347                         goto dorequest;
1348                 }
1349                 fwdev = malloc(sizeof(struct fw_device), M_FW,
1350                                                         M_NOWAIT | M_ZERO);
1351                 if(fwdev == NULL)
1352                         return;
1353                 fwdev->fc = fc;
1354                 fwdev->rommax = 0;
1355                 fwdev->dst = fc->ongonode;
1356                 fwdev->eui.hi = fc->ongoeui.hi; fwdev->eui.lo = fc->ongoeui.lo;
1357                 fwdev->status = FWDEVINIT;
1358                 fwdev->speed = fc->speed_map->speed[fc->nodeid][fc->ongonode];
1359
1360                 pfwdev = NULL;
1361                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1362                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1363                                         (tfwdev->eui.hi == fwdev->eui.hi &&
1364                                         tfwdev->eui.lo > fwdev->eui.lo))
1365                                 break;
1366                         pfwdev = tfwdev;
1367                 }
1368                 if (pfwdev == NULL)
1369                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1370                 else
1371                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1372
1373                 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1374                         linkspeed[fwdev->speed],
1375                         fc->ongoeui.hi, fc->ongoeui.lo);
1376
1377                 fc->ongodev = fwdev;
1378                 fc->ongoaddr = CSRROMOFF;
1379                 addr = 0xf0000000 | fc->ongoaddr;
1380         }else{
1381                 addr = 0xf0000000 | fc->ongoaddr;
1382         }
1383 dorequest:
1384 #if 0
1385         xfer = asyreqq(fc, FWSPD_S100, 0, 0,
1386                 ((FWLOCALBUS | fc->ongonode) << 16) | 0xffff , addr,
1387                 fw_bus_explore_callback);
1388         if(xfer == NULL) goto done;
1389 #else
1390         xfer = fw_xfer_alloc(M_FWXFER);
1391         if(xfer == NULL){
1392                 goto done;
1393         }
1394         xfer->send.spd = 0;
1395         fp = &xfer->send.hdr;
1396         fp->mode.rreqq.dest_hi = 0xffff;
1397         fp->mode.rreqq.tlrt = 0;
1398         fp->mode.rreqq.tcode = FWTCODE_RREQQ;
1399         fp->mode.rreqq.pri = 0;
1400         fp->mode.rreqq.src = 0;
1401         fp->mode.rreqq.dst = FWLOCALBUS | fc->ongonode;
1402         fp->mode.rreqq.dest_lo = addr;
1403         xfer->act.hand = fw_bus_explore_callback;
1404
1405         if (firewire_debug)
1406                 printf("node%d: explore addr=0x%x\n",
1407                                 fc->ongonode, fc->ongoaddr);
1408         err = fw_asyreq(fc, -1, xfer);
1409         if(err){
1410                 fw_xfer_free( xfer);
1411                 return;
1412         }
1413 #endif
1414         return;
1415 done:
1416         /* fw_attach_devs */
1417         fc->status = FWBUSEXPDONE;
1418         if (firewire_debug)
1419                 printf("bus_explore done\n");
1420         fw_attach_dev(fc);
1421         return;
1422
1423 }
1424
1425 /* Portable Async. request read quad */
1426 struct fw_xfer *
1427 asyreqq(struct firewire_comm *fc, u_int8_t spd, u_int8_t tl, u_int8_t rt,
1428         u_int32_t addr_hi, u_int32_t addr_lo,
1429         void (*hand) (struct fw_xfer*))
1430 {
1431         struct fw_xfer *xfer;
1432         struct fw_pkt *fp;
1433         int err;
1434
1435         xfer = fw_xfer_alloc(M_FWXFER);
1436         if (xfer == NULL)
1437                 return NULL;
1438
1439         xfer->send.spd = spd; /* XXX:min(spd, fc->spd) */
1440         fp = &xfer->send.hdr;
1441         fp->mode.rreqq.dest_hi = addr_hi & 0xffff;
1442         if(tl & FWP_TL_VALID){
1443                 fp->mode.rreqq.tlrt = (tl & 0x3f) << 2;
1444         }else{
1445                 fp->mode.rreqq.tlrt = 0;
1446         }
1447         fp->mode.rreqq.tlrt |= rt & 0x3;
1448         fp->mode.rreqq.tcode = FWTCODE_RREQQ;
1449         fp->mode.rreqq.pri = 0;
1450         fp->mode.rreqq.src = 0;
1451         fp->mode.rreqq.dst = addr_hi >> 16;
1452         fp->mode.rreqq.dest_lo = addr_lo;
1453         xfer->act.hand = hand;
1454
1455         err = fw_asyreq(fc, -1, xfer);
1456         if(err){
1457                 fw_xfer_free( xfer);
1458                 return NULL;
1459         }
1460         return xfer;
1461 }
1462
1463 /*
1464  * Callback for the IEEE1394 bus information collection.
1465  */
1466 static void
1467 fw_bus_explore_callback(struct fw_xfer *xfer)
1468 {
1469         struct firewire_comm *fc;
1470         struct fw_pkt *sfp,*rfp;
1471         struct csrhdr *chdr;
1472         struct csrdir *csrd;
1473         struct csrreg *csrreg;
1474         u_int32_t offset;
1475
1476
1477         if(xfer == NULL) {
1478                 printf("xfer == NULL\n");
1479                 return;
1480         }
1481         fc = xfer->fc;
1482
1483         if (firewire_debug)
1484                 printf("node%d: callback addr=0x%x\n",
1485                         fc->ongonode, fc->ongoaddr);
1486
1487         if(xfer->resp != 0){
1488                 printf("node%d: resp=%d addr=0x%x\n",
1489                         fc->ongonode, xfer->resp, fc->ongoaddr);
1490                 goto errnode;
1491         }
1492
1493         sfp = &xfer->send.hdr;
1494         rfp = &xfer->recv.hdr;
1495 #if 0
1496         {
1497                 u_int32_t *qld;
1498                 int i;
1499                 qld = (u_int32_t *)xfer->recv.buf;
1500                 printf("len:%d\n", xfer->recv.len);
1501                 for( i = 0 ; i <= xfer->recv.len && i < 32; i+= 4){
1502                         printf("0x%08x ", rfp->mode.ld[i/4]);
1503                         if((i % 16) == 15) printf("\n");
1504                 }
1505                 if((i % 16) != 15) printf("\n");
1506         }
1507 #endif
1508         if(fc->ongodev == NULL){
1509                 if(sfp->mode.rreqq.dest_lo == (0xf0000000 | CSRROMOFF)){
1510                         rfp->mode.rresq.data = ntohl(rfp->mode.rresq.data);
1511                         chdr = (struct csrhdr *)(&rfp->mode.rresq.data);
1512 /* If CSR is minimal confinguration, more investgation is not needed. */
1513                         if(chdr->info_len == 1){
1514                                 if (firewire_debug)
1515                                         printf("node%d: minimal config\n",
1516                                                                 fc->ongonode);
1517                                 goto nextnode;
1518                         }else{
1519                                 fc->ongoaddr = CSRROMOFF + 0xc;
1520                         }
1521                 }else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0xc))){
1522                         fc->ongoeui.hi = ntohl(rfp->mode.rresq.data);
1523                         fc->ongoaddr = CSRROMOFF + 0x10;
1524                 }else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0x10))){
1525                         fc->ongoeui.lo = ntohl(rfp->mode.rresq.data);
1526                         if (fc->ongoeui.hi == 0 && fc->ongoeui.lo == 0) {
1527                                 if (firewire_debug)
1528                                         printf("node%d: eui64 is zero.\n",
1529                                                         fc->ongonode);
1530                                 goto nextnode;
1531                         }
1532                         fc->ongoaddr = CSRROMOFF;
1533                 }
1534         }else{
1535                 if (fc->ongoaddr == CSRROMOFF &&
1536                     fc->ongodev->csrrom[0] == ntohl(rfp->mode.rresq.data)) {
1537                         fc->ongodev->status = FWDEVATTACHED;
1538                         goto nextnode;
1539                 }
1540                 fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4] = ntohl(rfp->mode.rresq.data);
1541                 if(fc->ongoaddr > fc->ongodev->rommax){
1542                         fc->ongodev->rommax = fc->ongoaddr;
1543                 }
1544                 csrd = SLIST_FIRST(&fc->ongocsr);
1545                 if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
1546                         chdr = (struct csrhdr *)(fc->ongodev->csrrom);
1547                         offset = CSRROMOFF;
1548                 }else{
1549                         chdr = (struct csrhdr *)&fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4];
1550                         offset = csrd->off;
1551                 }
1552                 if(fc->ongoaddr > (CSRROMOFF + 0x14) && fc->ongoaddr != offset){
1553                         csrreg = (struct csrreg *)&fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4];
1554                         if( csrreg->key == 0x81 || csrreg->key == 0xd1){
1555                                 csrd = SLIST_FIRST(&fc->csrfree);
1556                                 if(csrd == NULL){
1557                                         goto nextnode;
1558                                 }else{
1559                                         csrd->ongoaddr = fc->ongoaddr;
1560                                         fc->ongoaddr += csrreg->val * 4;
1561                                         csrd->off = fc->ongoaddr;
1562                                         SLIST_REMOVE_HEAD(&fc->csrfree, link);
1563                                         SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
1564                                         goto nextaddr;
1565                                 }
1566                         }
1567                 }
1568                 fc->ongoaddr += 4;
1569                 if(((fc->ongoaddr - offset)/4 > chdr->crc_len) &&
1570                                 (fc->ongodev->rommax < 0x414)){
1571                         if(fc->ongodev->rommax <= 0x414){
1572                                 csrd = SLIST_FIRST(&fc->csrfree);
1573                                 if(csrd == NULL) goto nextnode;
1574                                 csrd->off = fc->ongoaddr;
1575                                 csrd->ongoaddr = fc->ongoaddr;
1576                                 SLIST_REMOVE_HEAD(&fc->csrfree, link);
1577                                 SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
1578                         }
1579                         goto nextaddr;
1580                 }
1581
1582                 while(((fc->ongoaddr - offset)/4 > chdr->crc_len)){
1583                         if(csrd == NULL){
1584                                 goto nextnode;
1585                         };
1586                         fc->ongoaddr = csrd->ongoaddr + 4;
1587                         SLIST_REMOVE_HEAD(&fc->ongocsr, link);
1588                         SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
1589                         csrd = SLIST_FIRST(&fc->ongocsr);
1590                         if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
1591                                 chdr = (struct csrhdr *)(fc->ongodev->csrrom);
1592                                 offset = CSRROMOFF;
1593                         }else{
1594                                 chdr = (struct csrhdr *)&(fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4]);
1595                                 offset = csrd->off;
1596                         }
1597                 }
1598                 if((fc->ongoaddr - CSRROMOFF) > CSRROMSIZE){
1599                         goto nextnode;
1600                 }
1601         }
1602 nextaddr:
1603         fw_xfer_free( xfer);
1604         fw_bus_explore(fc);
1605         return;
1606 errnode:
1607         fc->retry_count++;
1608         if (fc->ongodev != NULL)
1609                 fc->ongodev->status = FWDEVINVAL;
1610 nextnode:
1611         fw_xfer_free( xfer);
1612         fc->ongonode++;
1613 /* housekeeping work space */
1614         fc->ongoaddr = CSRROMOFF;
1615         fc->ongodev = NULL;
1616         fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
1617         while((csrd = SLIST_FIRST(&fc->ongocsr)) != NULL){
1618                 SLIST_REMOVE_HEAD(&fc->ongocsr, link);
1619                 SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
1620         }
1621         fw_bus_explore(fc);
1622         return;
1623 }
1624
1625 /*
1626  * To attach sub-devices layer onto IEEE1394 bus.
1627  */
1628 static void
1629 fw_attach_dev(struct firewire_comm *fc)
1630 {
1631         struct fw_device *fwdev, *next;
1632         int i, err;
1633         device_t *devlistp;
1634         int devcnt;
1635         struct firewire_dev_comm *fdc;
1636
1637         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1638                 next = STAILQ_NEXT(fwdev, link);
1639                 if (fwdev->status == FWDEVINIT) {
1640                         fwdev->status = FWDEVATTACHED;
1641                 } else if (fwdev->status == FWDEVINVAL) {
1642                         fwdev->rcnt ++;
1643                         if (fwdev->rcnt > hold_count) {
1644                                 /*
1645                                  * Remove devices which have not been seen
1646                                  * for a while.
1647                                  */
1648                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1649                                     link);
1650                                 free(fwdev, M_FW);
1651                         }
1652                 }
1653         }
1654
1655         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1656         if( err != 0 )
1657                 return;
1658         for( i = 0 ; i < devcnt ; i++){
1659                 if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
1660                         fdc = device_get_softc(devlistp[i]);
1661                         if (fdc->post_explore != NULL)
1662                                 fdc->post_explore(fdc);
1663                 }
1664         }
1665         free(devlistp, M_TEMP);
1666
1667         if (fc->retry_count > 0) {
1668                 printf("probe failed for %d node\n", fc->retry_count);
1669 #if 0
1670                 callout_reset(&fc->retry_probe_callout, hz*2,
1671                                         (void *)fc->ibr, (void *)fc);
1672 #endif
1673         }
1674         return;
1675 }
1676
1677 /*
1678  * To allocate uniq transaction label.
1679  */
1680 static int
1681 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1682 {
1683         u_int i;
1684         struct tlabel *tl, *tmptl;
1685         int s;
1686         static u_int32_t label = 0;
1687
1688         s = splfw();
1689         for( i = 0 ; i < 0x40 ; i ++){
1690                 label = (label + 1) & 0x3f;
1691                 for(tmptl = STAILQ_FIRST(&fc->tlabels[label]);
1692                         tmptl != NULL; tmptl = STAILQ_NEXT(tmptl, link)){
1693                         if (tmptl->xfer->send.hdr.mode.hdr.dst ==
1694                             xfer->send.hdr.mode.hdr.dst)
1695                                 break;
1696                 }
1697                 if(tmptl == NULL) {
1698                         tl = malloc(sizeof(struct tlabel),M_FW,M_NOWAIT);
1699                         if (tl == NULL) {
1700                                 splx(s);
1701                                 return (-1);
1702                         }
1703                         tl->xfer = xfer;
1704                         STAILQ_INSERT_TAIL(&fc->tlabels[label], tl, link);
1705                         splx(s);
1706                         if (firewire_debug > 1)
1707                                 printf("fw_get_tlabel: dst=%d tl=%d\n",
1708                                     xfer->send.hdr.mode.hdr.dst, label);
1709                         return(label);
1710                 }
1711         }
1712         splx(s);
1713
1714         printf("fw_get_tlabel: no free tlabel\n");
1715         return(-1);
1716 }
1717
1718 static void
1719 fw_rcv_copy(struct fw_rcv_buf *rb)
1720 {
1721         struct fw_pkt *pkt;
1722         u_char *p;
1723         struct tcode_info *tinfo;
1724         u_int res, i, len, plen;
1725
1726         rb->xfer->recv.spd -= rb->spd;
1727
1728         pkt = (struct fw_pkt *)rb->vec->iov_base;
1729         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1730
1731         /* Copy header */
1732         p = (u_char *)&rb->xfer->recv.hdr;
1733         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1734         (u_char *)rb->vec->iov_base += tinfo->hdr_len;
1735         rb->vec->iov_len -= tinfo->hdr_len;
1736
1737         /* Copy payload */
1738         p = (u_char *)rb->xfer->recv.payload;
1739         res = rb->xfer->recv.pay_len;
1740
1741         /* special handling for RRESQ */
1742         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1743             p != NULL && res >= sizeof(u_int32_t)) {
1744                 *(u_int32_t *)p = pkt->mode.rresq.data;
1745                 rb->xfer->recv.pay_len = sizeof(u_int32_t);
1746                 return;
1747         }
1748
1749         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1750                 return;
1751
1752         plen = pkt->mode.rresb.len;
1753
1754         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1755                 len = MIN(rb->vec->iov_len, plen);
1756                 if (res < len) {
1757                         printf("rcv buffer(%d) is %d bytes short.\n",
1758                             rb->xfer->recv.pay_len, len - res);
1759                         len = res;
1760                 }
1761                 bcopy(rb->vec->iov_base, p, len);
1762                 p += len;
1763                 res -= len;
1764                 plen -= len;
1765                 if (res == 0 || plen == 0)
1766                         break;
1767         }
1768         rb->xfer->recv.pay_len -= res;
1769
1770 }
1771
1772 /*
1773  * Generic packet receving process.
1774  */
1775 void
1776 fw_rcv(struct fw_rcv_buf *rb)
1777 {
1778         struct fw_pkt *fp, *resfp;
1779         struct fw_bind *bind;
1780         int tcode, s;
1781         int i, len, oldstate;
1782 #if 0
1783         {
1784                 u_int32_t *qld;
1785                 int i;
1786                 qld = (u_int32_t *)buf;
1787                 printf("spd %d len:%d\n", spd, len);
1788                 for( i = 0 ; i <= len && i < 32; i+= 4){
1789                         printf("0x%08x ", ntohl(qld[i/4]));
1790                         if((i % 16) == 15) printf("\n");
1791                 }
1792                 if((i % 16) != 15) printf("\n");
1793         }
1794 #endif
1795         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1796         tcode = fp->mode.common.tcode;
1797         switch (tcode) {
1798         case FWTCODE_WRES:
1799         case FWTCODE_RRESQ:
1800         case FWTCODE_RRESB:
1801         case FWTCODE_LRES:
1802                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1803                                         fp->mode.hdr.tlrt >> 2);
1804                 if(rb->xfer == NULL) {
1805                         printf("fw_rcv: unknown response "
1806                             "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1807                             tcode_str[tcode], tcode,
1808                             fp->mode.hdr.src,
1809                             fp->mode.hdr.tlrt >> 2,
1810                             fp->mode.hdr.tlrt & 3,
1811                             fp->mode.rresq.data);
1812 #if 1
1813                         printf("try ad-hoc work around!!\n");
1814                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1815                                         (fp->mode.hdr.tlrt >> 2)^3);
1816                         if (rb->xfer == NULL) {
1817                                 printf("no use...\n");
1818                                 goto err;
1819                         }
1820 #else
1821                         goto err;
1822 #endif
1823                 }
1824                 fw_rcv_copy(rb);
1825                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1826                         rb->xfer->resp = EIO;
1827                 else
1828                         rb->xfer->resp = 0;
1829                 /* make sure the packet is drained in AT queue */
1830                 oldstate = rb->xfer->state;
1831                 rb->xfer->state = FWXF_RCVD;
1832                 switch (oldstate) {
1833                 case FWXF_SENT:
1834                         fw_xfer_done(rb->xfer);
1835                         break;
1836                 case FWXF_START:
1837 #if 0
1838                         if (firewire_debug)
1839                                 printf("not sent yet tl=%x\n", rb->xfer->tl);
1840 #endif
1841                         break;
1842                 default:
1843                         printf("unexpected state %d\n", rb->xfer->state);
1844                 }
1845                 return;
1846         case FWTCODE_WREQQ:
1847         case FWTCODE_WREQB:
1848         case FWTCODE_RREQQ:
1849         case FWTCODE_RREQB:
1850         case FWTCODE_LREQ:
1851                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1852                         fp->mode.rreqq.dest_lo);
1853                 if(bind == NULL){
1854                         printf("Unknown service addr 0x%04x:0x%08x %s(%x)"
1855 #if defined(__DragonFly__) || __FreeBSD_version < 500000
1856                             " src=0x%x data=%lx\n",
1857 #else
1858                             " src=0x%x data=%x\n",
1859 #endif
1860                             fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo,
1861                             tcode_str[tcode], tcode,
1862                             fp->mode.hdr.src, ntohl(fp->mode.wreqq.data));
1863                         if (rb->fc->status == FWBUSRESET) {
1864                                 printf("fw_rcv: cannot respond(bus reset)!\n");
1865                                 goto err;
1866                         }
1867                         rb->xfer = fw_xfer_alloc(M_FWXFER);
1868                         if(rb->xfer == NULL){
1869                                 return;
1870                         }
1871                         rb->xfer->send.spd = rb->spd;
1872                         rb->xfer->send.pay_len = 0;
1873                         resfp = &rb->xfer->send.hdr;
1874                         switch (tcode) {
1875                         case FWTCODE_WREQQ:
1876                         case FWTCODE_WREQB:
1877                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
1878                                 break;
1879                         case FWTCODE_RREQQ:
1880                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
1881                                 break;
1882                         case FWTCODE_RREQB:
1883                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
1884                                 break;
1885                         case FWTCODE_LREQ:
1886                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
1887                                 break;
1888                         }
1889                         resfp->mode.hdr.dst = fp->mode.hdr.src;
1890                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
1891                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
1892                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
1893                         resfp->mode.rresb.extcode = 0;
1894                         resfp->mode.rresb.len = 0;
1895 /*
1896                         rb->xfer->act.hand = fw_asy_callback;
1897 */
1898                         rb->xfer->act.hand = fw_xfer_free;
1899                         if(fw_asyreq(rb->fc, -1, rb->xfer)){
1900                                 fw_xfer_free(rb->xfer);
1901                                 return;
1902                         }
1903                         goto err;
1904                 }
1905                 len = 0;
1906                 for (i = 0; i < rb->nvec; i ++)
1907                         len += rb->vec[i].iov_len;
1908                 switch(bind->act_type){
1909                 case FWACT_XFER:
1910                         /* splfw()?? */
1911                         rb->xfer = STAILQ_FIRST(&bind->xferlist);
1912                         if (rb->xfer == NULL) {
1913                                 printf("Discard a packet for this bind.\n");
1914                                 goto err;
1915                         }
1916                         STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1917                         fw_rcv_copy(rb);
1918                         rb->xfer->act.hand(rb->xfer);
1919                         return;
1920                         break;
1921                 case FWACT_CH:
1922                         if(rb->fc->ir[bind->sub]->queued >=
1923                                 rb->fc->ir[bind->sub]->maxq){
1924                                 device_printf(rb->fc->bdev,
1925                                         "Discard a packet %x %d\n",
1926                                         bind->sub,
1927                                         rb->fc->ir[bind->sub]->queued);
1928                                 goto err;
1929                         }
1930                         rb->xfer = STAILQ_FIRST(&bind->xferlist);
1931                         if (rb->xfer == NULL) {
1932                                 printf("Discard packet for this bind\n");
1933                                 goto err;
1934                         }
1935                         STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1936                         fw_rcv_copy(rb);
1937                         s = splfw();
1938                         rb->fc->ir[bind->sub]->queued++;
1939                         STAILQ_INSERT_TAIL(&rb->fc->ir[bind->sub]->q,
1940                             rb->xfer, link);
1941                         splx(s);
1942
1943                         wakeup((caddr_t)rb->fc->ir[bind->sub]);
1944
1945                         return;
1946                         break;
1947                 default:
1948                         goto err;
1949                         break;
1950                 }
1951                 break;
1952 #if 0 /* shouldn't happen ?? or for GASP */
1953         case FWTCODE_STREAM:
1954         {
1955                 struct fw_xferq *xferq;
1956
1957                 xferq = rb->fc->ir[sub];
1958 #if 0
1959                 printf("stream rcv dma %d len %d off %d spd %d\n",
1960                         sub, len, off, spd);
1961 #endif
1962                 if(xferq->queued >= xferq->maxq) {
1963                         printf("receive queue is full\n");
1964                         goto err;
1965                 }
1966                 /* XXX get xfer from xfer queue, we don't need copy for
1967                         per packet mode */
1968                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
1969                                                 vec[0].iov_len);
1970                 if (rb->xfer == NULL) goto err;
1971                 fw_rcv_copy(rb)
1972                 s = splfw();
1973                 xferq->queued++;
1974                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
1975                 splx(s);
1976                 sc = device_get_softc(rb->fc->bdev);
1977 #if defined(__DragonFly__) || __FreeBSD_version < 500000
1978                 if (&xferq->rsel.si_pid != 0)
1979 #else
1980                 if (SEL_WAITING(&xferq->rsel))
1981 #endif
1982                         selwakeuppri(&xferq->rsel, FWPRI);
1983                 if (xferq->flag & FWXFERQ_WAKEUP) {
1984                         xferq->flag &= ~FWXFERQ_WAKEUP;
1985                         wakeup((caddr_t)xferq);
1986                 }
1987                 if (xferq->flag & FWXFERQ_HANDLER) {
1988                         xferq->hand(xferq);
1989                 }
1990                 return;
1991                 break;
1992         }
1993 #endif
1994         default:
1995                 printf("fw_rcv: unknow tcode %d\n", tcode);
1996                 break;
1997         }
1998 err:
1999         return;
2000 }
2001
2002 /*
2003  * Post process for Bus Manager election process.
2004  */
2005 static void
2006 fw_try_bmr_callback(struct fw_xfer *xfer)
2007 {
2008         struct firewire_comm *fc;
2009         int bmr;
2010
2011         if (xfer == NULL)
2012                 return;
2013         fc = xfer->fc;
2014         if (xfer->resp != 0)
2015                 goto error;
2016         if (xfer->recv.payload == NULL)
2017                 goto error;
2018         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2019                 goto error;
2020
2021         bmr = ntohl(xfer->recv.payload[0]);
2022         if (bmr == 0x3f)
2023                 bmr = fc->nodeid;
2024
2025         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2026         fw_xfer_free_buf(xfer);
2027         fw_bmr(fc);
2028         return;
2029
2030 error:
2031         device_printf(fc->bdev, "bus manager election failed\n");
2032         fw_xfer_free_buf(xfer);
2033 }
2034
2035
2036 /*
2037  * To candidate Bus Manager election process.
2038  */
2039 static void
2040 fw_try_bmr(void *arg)
2041 {
2042         struct fw_xfer *xfer;
2043         struct firewire_comm *fc = (struct firewire_comm *)arg;
2044         struct fw_pkt *fp;
2045         int err = 0;
2046
2047         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2048         if(xfer == NULL){
2049                 return;
2050         }
2051         xfer->send.spd = 0;
2052         fc->status = FWBUSMGRELECT;
2053
2054         fp = &xfer->send.hdr;
2055         fp->mode.lreq.dest_hi = 0xffff;
2056         fp->mode.lreq.tlrt = 0;
2057         fp->mode.lreq.tcode = FWTCODE_LREQ;
2058         fp->mode.lreq.pri = 0;
2059         fp->mode.lreq.src = 0;
2060         fp->mode.lreq.len = 8;
2061         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2062         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2063         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2064         xfer->send.payload[0] = htonl(0x3f);
2065         xfer->send.payload[1] = htonl(fc->nodeid);
2066         xfer->act.hand = fw_try_bmr_callback;
2067
2068         err = fw_asyreq(fc, -1, xfer);
2069         if(err){
2070                 fw_xfer_free_buf(xfer);
2071                 return;
2072         }
2073         return;
2074 }
2075
2076 #ifdef FW_VMACCESS
2077 /*
2078  * Software implementation for physical memory block access.
2079  * XXX:Too slow, usef for debug purpose only.
2080  */
2081 static void
2082 fw_vmaccess(struct fw_xfer *xfer){
2083         struct fw_pkt *rfp, *sfp = NULL;
2084         u_int32_t *ld = (u_int32_t *)xfer->recv.buf;
2085
2086         printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2087                         xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
2088         printf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2089         if(xfer->resp != 0){
2090                 fw_xfer_free( xfer);
2091                 return;
2092         }
2093         if(xfer->recv.buf == NULL){
2094                 fw_xfer_free( xfer);
2095                 return;
2096         }
2097         rfp = (struct fw_pkt *)xfer->recv.buf;
2098         switch(rfp->mode.hdr.tcode){
2099                 /* XXX need fix for 64bit arch */
2100                 case FWTCODE_WREQB:
2101                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2102                         xfer->send.len = 12;
2103                         sfp = (struct fw_pkt *)xfer->send.buf;
2104                         bcopy(rfp->mode.wreqb.payload,
2105                                 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
2106                         sfp->mode.wres.tcode = FWTCODE_WRES;
2107                         sfp->mode.wres.rtcode = 0;
2108                         break;
2109                 case FWTCODE_WREQQ:
2110                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2111                         xfer->send.len = 12;
2112                         sfp->mode.wres.tcode = FWTCODE_WRES;
2113                         *((u_int32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
2114                         sfp->mode.wres.rtcode = 0;
2115                         break;
2116                 case FWTCODE_RREQB:
2117                         xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT);
2118                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2119                         sfp = (struct fw_pkt *)xfer->send.buf;
2120                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2121                                 sfp->mode.rresb.payload, (u_int16_t)ntohs(rfp->mode.rreqb.len));
2122                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2123                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2124                         sfp->mode.rresb.rtcode = 0;
2125                         sfp->mode.rresb.extcode = 0;
2126                         break;
2127                 case FWTCODE_RREQQ:
2128                         xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2129                         xfer->send.len = 16;
2130                         sfp = (struct fw_pkt *)xfer->send.buf;
2131                         sfp->mode.rresq.data = *(u_int32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2132                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2133                         sfp->mode.rresb.rtcode = 0;
2134                         break;
2135                 default:
2136                         fw_xfer_free( xfer);
2137                         return;
2138         }
2139         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2140         xfer->dst = ntohs(rfp->mode.hdr.src);
2141         xfer->act.hand = fw_xfer_free;
2142         xfer->retry_req = fw_asybusy;
2143
2144         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2145         sfp->mode.hdr.pri = 0;
2146
2147         fw_asyreq(xfer->fc, -1, xfer);
2148 /**/
2149         return;
2150 }
2151 #endif
2152
2153 /*
2154  * CRC16 check-sum for IEEE1394 register blocks.
2155  */
2156 u_int16_t
2157 fw_crc16(u_int32_t *ptr, u_int32_t len){
2158         u_int32_t i, sum, crc = 0;
2159         int shift;
2160         len = (len + 3) & ~3;
2161         for(i = 0 ; i < len ; i+= 4){
2162                 for( shift = 28 ; shift >= 0 ; shift -= 4){
2163                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2164                         crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2165                 }
2166                 crc &= 0xffff;
2167         }
2168         return((u_int16_t) crc);
2169 }
2170
2171 static int
2172 fw_bmr(struct firewire_comm *fc)
2173 {
2174         struct fw_device fwdev;
2175         union fw_self_id *self_id;
2176         int cmstr;
2177         u_int32_t quad;
2178
2179         /* Check to see if the current root node is cycle master capable */
2180         self_id = &fc->topology_map->self_id[fc->max_node];
2181         if (fc->max_node > 0) {
2182                 /* XXX check cmc bit of businfo block rather than contender */
2183                 if (self_id->p0.link_active && self_id->p0.contender)
2184                         cmstr = fc->max_node;
2185                 else {
2186                         device_printf(fc->bdev,
2187                                 "root node is not cycle master capable\n");
2188                         /* XXX shall we be the cycle master? */
2189                         cmstr = fc->nodeid;
2190                         /* XXX need bus reset */
2191                 }
2192         } else
2193                 cmstr = -1;
2194
2195         device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID));
2196         if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2197                 /* We are not the bus manager */
2198                 printf("\n");
2199                 return(0);
2200         }
2201         printf("(me)\n");
2202
2203         /* Optimize gapcount */
2204         if(fc->max_hop <= MAX_GAPHOP )
2205                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2206         /* If we are the cycle master, nothing to do */
2207         if (cmstr == fc->nodeid || cmstr == -1)
2208                 return 0;
2209         /* Bus probe has not finished, make dummy fwdev for cmstr */
2210         bzero(&fwdev, sizeof(fwdev));
2211         fwdev.fc = fc;
2212         fwdev.dst = cmstr;
2213         fwdev.speed = 0;
2214         fwdev.maxrec = 8; /* 512 */
2215         fwdev.status = FWDEVINIT;
2216         /* Set cmstr bit on the cycle master */
2217         quad = htonl(1 << 8);
2218         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2219                 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2220
2221         return 0;
2222 }
2223
2224 static int
2225 fw_modevent(module_t mode, int type, void *data)
2226 {
2227         int err = 0;
2228 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2229         static eventhandler_tag fwdev_ehtag = NULL;
2230 #endif
2231
2232         switch (type) {
2233         case MOD_LOAD:
2234 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2235                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2236                                                 fwdev_clone, 0, 1000);
2237 #endif
2238                 break;
2239         case MOD_UNLOAD:
2240 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2241                 if (fwdev_ehtag != NULL)
2242                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2243 #endif
2244                 break;
2245         case MOD_SHUTDOWN:
2246                 break;
2247         }
2248         return (err);
2249 }
2250
2251 DECLARE_DUMMY_MODULE(firewire);
2252 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0);
2253 MODULE_VERSION(firewire, 1);