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 1.11 2005/06/02 20:40:33 dillon 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 #include <sys/thread2.h>
  48
  49 #if defined(__DragonFly__) || __FreeBSD_version < 500000
  50 #include <machine/clock.h>      /* for DELAY() */
  51 #endif
  52
  53 #include <sys/bus.h>            /* used by smbus and newbus */
  54 #include <machine/bus.h>
  55
  56 #ifdef __DragonFly__
  57 #include "firewire.h"
  58 #include "firewirereg.h"
  59 #include "fwmem.h"
  60 #include "iec13213.h"
  61 #include "iec68113.h"
  62 #else
  63 #include <dev/firewire/firewire.h>
  64 #include <dev/firewire/firewirereg.h>
  65 #include <dev/firewire/fwmem.h>
  66 #include <dev/firewire/iec13213.h>
  67 #include <dev/firewire/iec68113.h>
  68 #endif
  69
  70 struct crom_src_buf {
  71         struct crom_src src;
  72         struct crom_chunk root;
  73         struct crom_chunk vendor;
  74         struct crom_chunk hw;
  75 };
  76
  77 int firewire_debug=0, try_bmr=1, hold_count=3;
  78 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  79         "FireWire driver debug flag");
  80 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
  81 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  82         "Try to be a bus manager");
  83 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  84         "Number of count of bus resets for removing lost device information");
  85
  86 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  87 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  88
  89 #define FW_MAXASYRTY 4
  90
  91 devclass_t firewire_devclass;
  92
  93 static void firewire_identify   (driver_t *, device_t);
  94 static int firewire_probe       (device_t);
  95 static int firewire_attach      (device_t);
  96 static int firewire_detach      (device_t);
  97 static int firewire_resume      (device_t);
  98 #if 0
  99 static int firewire_shutdown    (device_t);
 100 #endif
 101 static device_t firewire_add_child   (device_t, int, const char *, int);
 102 static void fw_try_bmr (void *);
 103 static void fw_try_bmr_callback (struct fw_xfer *);
 104 static void fw_asystart (struct fw_xfer *);
 105 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
 106 static void fw_bus_probe (struct firewire_comm *);
 107 static void fw_bus_explore (struct firewire_comm *);
 108 static void fw_bus_explore_callback (struct fw_xfer *);
 109 static void fw_attach_dev (struct firewire_comm *);
 110 #ifdef FW_VMACCESS
 111 static void fw_vmaccess (struct fw_xfer *);
 112 #endif
 113 struct fw_xfer *asyreqq (struct firewire_comm *, u_int8_t, u_int8_t, u_int8_t,
 114         u_int32_t, u_int32_t, void (*)(struct fw_xfer *));
 115 static int fw_bmr (struct firewire_comm *);
 116
 117 static device_method_t firewire_methods[] = {
 118         /* Device interface */
 119         DEVMETHOD(device_identify,      firewire_identify),
 120         DEVMETHOD(device_probe,         firewire_probe),
 121         DEVMETHOD(device_attach,        firewire_attach),
 122         DEVMETHOD(device_detach,        firewire_detach),
 123         DEVMETHOD(device_suspend,       bus_generic_suspend),
 124         DEVMETHOD(device_resume,        firewire_resume),
 125         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 126
 127         /* Bus interface */
 128         DEVMETHOD(bus_add_child,        firewire_add_child),
 129         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 130
 131         { 0, 0 }
 132 };
 133 char *linkspeed[] = {
 134         "S100", "S200", "S400", "S800",
 135         "S1600", "S3200", "undef", "undef"
 136 };
 137
 138 static char *tcode_str[] = {
 139         "WREQQ", "WREQB", "WRES",   "undef",
 140         "RREQQ", "RREQB", "RRESQ",  "RRESB",
 141         "CYCS",  "LREQ",  "STREAM", "LRES",
 142         "undef", "undef", "PHY",    "undef"
 143 };
 144
 145 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
 146 #define MAX_GAPHOP 15
 147 u_int gap_cnt[] = { 5,  5,  7,  8, 10, 13, 16, 18,
 148                    21, 24, 26, 29, 32, 35, 37, 40};
 149
 150 static driver_t firewire_driver = {
 151         "firewire",
 152         firewire_methods,
 153         sizeof(struct firewire_softc),
 154 };
 155
 156 /*
 157  * Lookup fwdev by node id.
 158  */
 159 struct fw_device *
 160 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
 161 {
 162         struct fw_device *fwdev;
 163
 164         crit_enter();
 165         STAILQ_FOREACH(fwdev, &fc->devices, link)
 166                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 167                         break;
 168         crit_exit();
 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
 181         crit_enter();
 182         STAILQ_FOREACH(fwdev, &fc->devices, link)
 183                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 184                         break;
 185         crit_exit();
 186
 187         if(fwdev == NULL) return NULL;
 188         if(fwdev->status == FWDEVINVAL) return NULL;
 189         return fwdev;
 190 }
 191
 192 /*
 193  * Async. request procedure for userland application.
 194  */
 195 int
 196 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
 197 {
 198         int err = 0;
 199         struct fw_xferq *xferq;
 200         int tl = 0, len;
 201         struct fw_pkt *fp;
 202         int tcode;
 203         struct tcode_info *info;
 204
 205         if(xfer == NULL) return EINVAL;
 206         if(xfer->act.hand == NULL){
 207                 printf("act.hand == NULL\n");
 208                 return EINVAL;
 209         }
 210         fp = &xfer->send.hdr;
 211
 212         tcode = fp->mode.common.tcode & 0xf;
 213         info = &fc->tcode[tcode];
 214         if (info->flag == 0) {
 215                 printf("invalid tcode=%x\n", tcode);
 216                 return EINVAL;
 217         }
 218         if (info->flag & FWTI_REQ)
 219                 xferq = fc->atq;
 220         else
 221                 xferq = fc->ats;
 222         len = info->hdr_len;
 223         if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
 224                 printf("send.pay_len > maxrec\n");
 225                 return EINVAL;
 226         }
 227         if (info->flag & FWTI_BLOCK_STR)
 228                 len = fp->mode.stream.len;
 229         else if (info->flag & FWTI_BLOCK_ASY)
 230                 len = fp->mode.rresb.len;
 231         else
 232                 len = 0;
 233         if (len != xfer->send.pay_len){
 234                 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
 235                     len, xfer->send.pay_len, tcode_str[tcode], tcode);
 236                 return EINVAL;
 237         }
 238
 239         if(xferq->start == NULL){
 240                 printf("xferq->start == NULL\n");
 241                 return EINVAL;
 242         }
 243         if(!(xferq->queued < xferq->maxq)){
 244                 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
 245                         xferq->queued);
 246                 return EINVAL;
 247         }
 248
 249         microtime(&xfer->tv);
 250         if (info->flag & FWTI_TLABEL) {
 251                 if((tl = fw_get_tlabel(fc, xfer)) == -1 )
 252                         return EIO;
 253                 fp->mode.hdr.tlrt = tl << 2;
 254         }
 255
 256         xfer->tl = tl;
 257         xfer->resp = 0;
 258         xfer->fc = fc;
 259         xfer->q = xferq;
 260         xfer->retry_req = fw_asybusy;
 261
 262         fw_asystart(xfer);
 263         return err;
 264 }
 265 /*
 266  * Wakeup blocked process.
 267  */
 268 void
 269 fw_asy_callback(struct fw_xfer *xfer){
 270         wakeup(xfer);
 271         return;
 272 }
 273 /*
 274  * Postpone to later retry.
 275  */
 276 void fw_asybusy(struct fw_xfer *xfer){
 277         printf("fw_asybusy\n");
 278 /*
 279         xfer->ch =  timeout((timeout_t *)fw_asystart, (void *)xfer, 20000);
 280 */
 281 #if 0
 282         DELAY(20000);
 283 #endif
 284         fw_asystart(xfer);
 285         return;
 286 }
 287
 288 /*
 289  * Async. request with given xfer structure.
 290  */
 291 static void
 292 fw_asystart(struct fw_xfer *xfer)
 293 {
 294         struct firewire_comm *fc = xfer->fc;
 295
 296         if(xfer->retry++ >= fc->max_asyretry){
 297                 device_printf(fc->bdev, "max_asyretry exceeded\n");
 298                 xfer->resp = EBUSY;
 299                 xfer->state = FWXF_BUSY;
 300                 xfer->act.hand(xfer);
 301                 return;
 302         }
 303 #if 0 /* XXX allow bus explore packets only after bus rest */
 304         if (fc->status < FWBUSEXPLORE) {
 305                 xfer->resp = EAGAIN;
 306                 xfer->state = FWXF_BUSY;
 307                 if (xfer->act.hand != NULL)
 308                         xfer->act.hand(xfer);
 309                 return;
 310         }
 311 #endif
 312         crit_enter();
 313         xfer->state = FWXF_INQ;
 314         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 315         xfer->q->queued ++;
 316         crit_exit();
 317         /* XXX just queue for mbuf */
 318         if (xfer->mbuf == NULL)
 319                 xfer->q->start(fc);
 320         return;
 321 }
 322
 323 static void
 324 firewire_identify(driver_t *driver, device_t parent)
 325 {
 326         BUS_ADD_CHILD(parent, 0, "firewire", -1);
 327 }
 328
 329 static int
 330 firewire_probe(device_t dev)
 331 {
 332         device_set_desc(dev, "IEEE1394(FireWire) bus");
 333         return (0);
 334 }
 335
 336 static void
 337 firewire_xfer_timeout(struct firewire_comm *fc)
 338 {
 339         struct fw_xfer *xfer;
 340         struct tlabel *tl;
 341         struct timeval tv;
 342         struct timeval split_timeout;
 343         int i;
 344
 345         split_timeout.tv_sec = 0;
 346         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 347
 348         microtime(&tv);
 349         timevalsub(&tv, &split_timeout);
 350
 351         crit_enter();
 352         for (i = 0; i < 0x40; i ++) {
 353                 while ((tl = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 354                         xfer = tl->xfer;
 355                         if (timevalcmp(&xfer->tv, &tv, >))
 356                                 /* the rests are newer than this */
 357                                 break;
 358                         if (xfer->state == FWXF_START)
 359                                 /* not sent yet */
 360                                 break;
 361                         device_printf(fc->bdev,
 362                                 "split transaction timeout dst=0x%x tl=0x%x state=%d\n",
 363                                 xfer->send.hdr.mode.hdr.dst, i, xfer->state);
 364                         xfer->resp = ETIMEDOUT;
 365                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], link);
 366                         fw_xfer_done(xfer);
 367                 }
 368         }
 369         crit_exit();
 370 }
 371
 372 #define WATCHDOC_HZ 10
 373 static void
 374 firewire_watchdog(void *arg)
 375 {
 376         struct firewire_comm *fc;
 377         static int watchdoc_clock = 0;
 378
 379         fc = (struct firewire_comm *)arg;
 380
 381         /*
 382          * At boot stage, the device interrupt is disabled and
 383          * We encounter a timeout easily. To avoid this,
 384          * ignore clock interrupt for a while.
 385          */
 386         if (watchdoc_clock > WATCHDOC_HZ * 15) {
 387                 firewire_xfer_timeout(fc);
 388                 fc->timeout(fc);
 389         } else
 390                 watchdoc_clock ++;
 391
 392         callout_reset(&fc->timeout_callout, hz / WATCHDOC_HZ,
 393                         (void *)firewire_watchdog, (void *)fc);
 394 }
 395
 396 /*
 397  * The attach routine.
 398  */
 399 static int
 400 firewire_attach(device_t dev)
 401 {
 402         int unit;
 403         struct firewire_softc *sc = device_get_softc(dev);
 404         device_t pa = device_get_parent(dev);
 405         struct firewire_comm *fc;
 406
 407         fc = (struct firewire_comm *)device_get_softc(pa);
 408         sc->fc = fc;
 409         fc->status = FWBUSNOTREADY;
 410
 411         unit = device_get_unit(dev);
 412         if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
 413
 414         fwdev_makedev(sc);
 415
 416         CALLOUT_INIT(&sc->fc->timeout_callout);
 417         CALLOUT_INIT(&sc->fc->bmr_callout);
 418         CALLOUT_INIT(&sc->fc->retry_probe_callout);
 419         CALLOUT_INIT(&sc->fc->busprobe_callout);
 420
 421         callout_reset(&sc->fc->timeout_callout, hz,
 422                         (void *)firewire_watchdog, (void *)sc->fc);
 423
 424         /* Locate our children */
 425         bus_generic_probe(dev);
 426
 427         /* launch attachement of the added children */
 428         bus_generic_attach(dev);
 429
 430         /* bus_reset */
 431         fw_busreset(fc);
 432         fc->ibr(fc);
 433
 434         return 0;
 435 }
 436
 437 /*
 438  * Attach it as child.
 439  */
 440 static device_t
 441 firewire_add_child(device_t dev, int order, const char *name, int unit)
 442 {
 443         device_t child;
 444         struct firewire_softc *sc;
 445
 446         sc = (struct firewire_softc *)device_get_softc(dev);
 447         child = device_add_child(dev, name, unit);
 448         if (child) {
 449                 device_set_ivars(child, sc->fc);
 450                 device_probe_and_attach(child);
 451         }
 452
 453         return child;
 454 }
 455
 456 static int
 457 firewire_resume(device_t dev)
 458 {
 459         struct firewire_softc *sc;
 460
 461         sc = (struct firewire_softc *)device_get_softc(dev);
 462         sc->fc->status = FWBUSNOTREADY;
 463
 464         bus_generic_resume(dev);
 465
 466         return(0);
 467 }
 468
 469 /*
 470  * Dettach it.
 471  */
 472 static int
 473 firewire_detach(device_t dev)
 474 {
 475         struct firewire_softc *sc;
 476         struct csrdir *csrd, *next;
 477         struct fw_device *fwdev, *fwdev_next;
 478         int err;
 479
 480         sc = (struct firewire_softc *)device_get_softc(dev);
 481         if ((err = fwdev_destroydev(sc)) != 0)
 482                 return err;
 483
 484         if ((err = bus_generic_detach(dev)) != 0)
 485                 return err;
 486
 487         callout_stop(&sc->fc->timeout_callout);
 488         callout_stop(&sc->fc->bmr_callout);
 489         callout_stop(&sc->fc->retry_probe_callout);
 490         callout_stop(&sc->fc->busprobe_callout);
 491
 492         /* XXX xfree_free and untimeout on all xfers */
 493         for (fwdev = STAILQ_FIRST(&sc->fc->devices); fwdev != NULL;
 494                                                         fwdev = fwdev_next) {
 495                 fwdev_next = STAILQ_NEXT(fwdev, link);
 496                 free(fwdev, M_FW);
 497         }
 498         for (csrd = SLIST_FIRST(&sc->fc->csrfree); csrd != NULL; csrd = next) {
 499                 next = SLIST_NEXT(csrd, link);
 500                 free(csrd, M_FW);
 501         }
 502         free(sc->fc->topology_map, M_FW);
 503         free(sc->fc->speed_map, M_FW);
 504         free(sc->fc->crom_src_buf, M_FW);
 505         return(0);
 506 }
 507 #if 0
 508 static int
 509 firewire_shutdown( device_t dev )
 510 {
 511         return 0;
 512 }
 513 #endif
 514
 515
 516 static void
 517 fw_xferq_drain(struct fw_xferq *xferq)
 518 {
 519         struct fw_xfer *xfer;
 520
 521         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 522                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 523                 xferq->queued --;
 524                 xfer->resp = EAGAIN;
 525                 fw_xfer_done(xfer);
 526         }
 527 }
 528
 529 void
 530 fw_drain_txq(struct firewire_comm *fc)
 531 {
 532         int i;
 533
 534         fw_xferq_drain(fc->atq);
 535         fw_xferq_drain(fc->ats);
 536         for(i = 0; i < fc->nisodma; i++)
 537                 fw_xferq_drain(fc->it[i]);
 538 }
 539
 540 static void
 541 fw_reset_csr(struct firewire_comm *fc)
 542 {
 543         int i;
 544
 545         CSRARC(fc, STATE_CLEAR)
 546                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 547         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 548         CSRARC(fc, NODE_IDS) = 0x3f;
 549
 550         CSRARC(fc, TOPO_MAP + 8) = 0;
 551         fc->irm = -1;
 552
 553         fc->max_node = -1;
 554
 555         for(i = 2; i < 0x100/4 - 2 ; i++){
 556                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 557         }
 558         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 559         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 560         CSRARC(fc, RESET_START) = 0;
 561         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 562         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 563         CSRARC(fc, CYCLE_TIME) = 0x0;
 564         CSRARC(fc, BUS_TIME) = 0x0;
 565         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 566         CSRARC(fc, BANDWIDTH_AV) = 4915;
 567         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 568         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 569         CSRARC(fc, IP_CHANNELS) = (1 << 31);
 570
 571         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 572         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 573         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 574                                 1 << 28 | 0xff << 16 | 0x09 << 8;
 575         CSRARC(fc, CONF_ROM + 0xc) = 0;
 576
 577 /* DV depend CSRs see blue book */
 578         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 579         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 580
 581         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
 582         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 583 }
 584
 585 static void
 586 fw_init_crom(struct firewire_comm *fc)
 587 {
 588         struct crom_src *src;
 589
 590         fc->crom_src_buf = (struct crom_src_buf *)
 591                 malloc(sizeof(struct crom_src_buf), M_FW, M_WAITOK | M_ZERO);
 592         if (fc->crom_src_buf == NULL)
 593                 return;
 594
 595         src = &fc->crom_src_buf->src;
 596         bzero(src, sizeof(struct crom_src));
 597
 598         /* BUS info sample */
 599         src->hdr.info_len = 4;
 600
 601         src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 602
 603         src->businfo.irmc = 1;
 604         src->businfo.cmc = 1;
 605         src->businfo.isc = 1;
 606         src->businfo.bmc = 1;
 607         src->businfo.pmc = 0;
 608         src->businfo.cyc_clk_acc = 100;
 609         src->businfo.max_rec = fc->maxrec;
 610         src->businfo.max_rom = MAXROM_4;
 611         src->businfo.generation = 1;
 612         src->businfo.link_spd = fc->speed;
 613
 614         src->businfo.eui64.hi = fc->eui.hi;
 615         src->businfo.eui64.lo = fc->eui.lo;
 616
 617         STAILQ_INIT(&src->chunk_list);
 618
 619         fc->crom_src = src;
 620         fc->crom_root = &fc->crom_src_buf->root;
 621 }
 622
 623 static void
 624 fw_reset_crom(struct firewire_comm *fc)
 625 {
 626         struct crom_src_buf *buf;
 627         struct crom_src *src;
 628         struct crom_chunk *root;
 629
 630         if (fc->crom_src_buf == NULL)
 631                 fw_init_crom(fc);
 632
 633         buf =  fc->crom_src_buf;
 634         src = fc->crom_src;
 635         root = fc->crom_root;
 636
 637         STAILQ_INIT(&src->chunk_list);
 638
 639         bzero(root, sizeof(struct crom_chunk));
 640         crom_add_chunk(src, NULL, root, 0);
 641         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 642         /* private company_id */
 643         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 644 #ifdef __DragonFly__
 645         crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
 646         crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
 647 #else
 648         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 649         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 650 #endif
 651         crom_add_simple_text(src, root, &buf->hw, hostname);
 652 }
 653
 654 /*
 655  * Called after bus reset.
 656  */
 657 void
 658 fw_busreset(struct firewire_comm *fc)
 659 {
 660         struct firewire_dev_comm *fdc;
 661         struct crom_src *src;
 662         device_t *devlistp;
 663         void *newrom;
 664         int i, devcnt;
 665
 666         switch(fc->status){
 667         case FWBUSMGRELECT:
 668                 callout_stop(&fc->bmr_callout);
 669                 break;
 670         default:
 671                 break;
 672         }
 673         fc->status = FWBUSRESET;
 674         fw_reset_csr(fc);
 675         fw_reset_crom(fc);
 676
 677         if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
 678                 for( i = 0 ; i < devcnt ; i++)
 679                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
 680                                 fdc = device_get_softc(devlistp[i]);
 681                                 if (fdc->post_busreset != NULL)
 682                                         fdc->post_busreset(fdc);
 683                         }
 684                 free(devlistp, M_TEMP);
 685         }
 686
 687         newrom = malloc(CROMSIZE, M_FW, M_WAITOK | M_ZERO);
 688         src = &fc->crom_src_buf->src;
 689         crom_load(src, (u_int32_t *)newrom, CROMSIZE);
 690         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 691                 /* bump generation and reload */
 692                 src->businfo.generation ++;
 693                 /* generation must be between 0x2 and 0xF */
 694                 if (src->businfo.generation < 2)
 695                         src->businfo.generation ++;
 696                 crom_load(src, (u_int32_t *)newrom, CROMSIZE);
 697                 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
 698         }
 699         free(newrom, M_FW);
 700 }
 701
 702 /* Call once after reboot */
 703 void fw_init(struct firewire_comm *fc)
 704 {
 705         int i;
 706         struct csrdir *csrd;
 707 #ifdef FW_VMACCESS
 708         struct fw_xfer *xfer;
 709         struct fw_bind *fwb;
 710 #endif
 711
 712         fc->max_asyretry = FW_MAXASYRTY;
 713
 714         fc->arq->queued = 0;
 715         fc->ars->queued = 0;
 716         fc->atq->queued = 0;
 717         fc->ats->queued = 0;
 718
 719         fc->arq->buf = NULL;
 720         fc->ars->buf = NULL;
 721         fc->atq->buf = NULL;
 722         fc->ats->buf = NULL;
 723
 724         fc->arq->flag = 0;
 725         fc->ars->flag = 0;
 726         fc->atq->flag = 0;
 727         fc->ats->flag = 0;
 728
 729         STAILQ_INIT(&fc->atq->q);
 730         STAILQ_INIT(&fc->ats->q);
 731
 732         for( i = 0 ; i < fc->nisodma ; i ++ ){
 733                 fc->it[i]->queued = 0;
 734                 fc->ir[i]->queued = 0;
 735
 736                 fc->it[i]->start = NULL;
 737                 fc->ir[i]->start = NULL;
 738
 739                 fc->it[i]->buf = NULL;
 740                 fc->ir[i]->buf = NULL;
 741
 742                 fc->it[i]->flag = FWXFERQ_STREAM;
 743                 fc->ir[i]->flag = FWXFERQ_STREAM;
 744
 745                 STAILQ_INIT(&fc->it[i]->q);
 746                 STAILQ_INIT(&fc->ir[i]->q);
 747
 748                 STAILQ_INIT(&fc->it[i]->binds);
 749                 STAILQ_INIT(&fc->ir[i]->binds);
 750         }
 751
 752         fc->arq->maxq = FWMAXQUEUE;
 753         fc->ars->maxq = FWMAXQUEUE;
 754         fc->atq->maxq = FWMAXQUEUE;
 755         fc->ats->maxq = FWMAXQUEUE;
 756
 757         for( i = 0 ; i < fc->nisodma ; i++){
 758                 fc->ir[i]->maxq = FWMAXQUEUE;
 759                 fc->it[i]->maxq = FWMAXQUEUE;
 760         }
 761 /* Initialize csr registers */
 762         fc->topology_map = malloc(sizeof(struct fw_topology_map),
 763                                     M_FW, M_WAITOK | M_ZERO);
 764         fc->speed_map = malloc(sizeof(struct fw_speed_map),
 765                                     M_FW, M_WAITOK | M_ZERO);
 766         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 767         CSRARC(fc, TOPO_MAP + 4) = 1;
 768         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 769         CSRARC(fc, SPED_MAP + 4) = 1;
 770
 771         STAILQ_INIT(&fc->devices);
 772
 773 /* Initialize csr ROM work space */
 774         SLIST_INIT(&fc->ongocsr);
 775         SLIST_INIT(&fc->csrfree);
 776         for( i = 0 ; i < FWMAXCSRDIR ; i++){
 777                 csrd = malloc(sizeof(struct csrdir), M_FW, M_WAITOK);
 778                 if(csrd == NULL) break;
 779                 SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
 780         }
 781
 782 /* Initialize Async handlers */
 783         STAILQ_INIT(&fc->binds);
 784         for( i = 0 ; i < 0x40 ; i++){
 785                 STAILQ_INIT(&fc->tlabels[i]);
 786         }
 787
 788 /* DV depend CSRs see blue book */
 789 #if 0
 790         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 791         CSRARC(fc, oPCR) = 0x8000007a;
 792         for(i = 4 ; i < 0x7c/4 ; i+=4){
 793                 CSRARC(fc, i + oPCR) = 0x8000007a;
 794         }
 795
 796         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 797         CSRARC(fc, iPCR) = 0x803f0000;
 798         for(i = 4 ; i < 0x7c/4 ; i+=4){
 799                 CSRARC(fc, i + iPCR) = 0x0;
 800         }
 801 #endif
 802
 803         fc->crom_src_buf = NULL;
 804
 805 #ifdef FW_VMACCESS
 806         xfer = fw_xfer_alloc();
 807         if(xfer == NULL) return;
 808
 809         fwb = malloc(sizeof (struct fw_bind), M_FW, M_WAITOK);
 810         xfer->act.hand = fw_vmaccess;
 811         xfer->fc = fc;
 812         xfer->sc = NULL;
 813
 814         fwb->start_hi = 0x2;
 815         fwb->start_lo = 0;
 816         fwb->addrlen = 0xffffffff;
 817         fwb->xfer = xfer;
 818         fw_bindadd(fc, fwb);
 819 #endif
 820 }
 821
 822 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
 823     ((fwb)->end < (addr))?1:0)
 824
 825 /*
 826  * To lookup binded process from IEEE1394 address.
 827  */
 828 struct fw_bind *
 829 fw_bindlookup(struct firewire_comm *fc, u_int16_t dest_hi, u_int32_t dest_lo)
 830 {
 831         u_int64_t addr;
 832         struct fw_bind *tfw;
 833
 834         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 835         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 836                 if (tfw->act_type != FWACT_NULL && BIND_CMP(addr, tfw) == 0)
 837                         return(tfw);
 838         return(NULL);
 839 }
 840
 841 /*
 842  * To bind IEEE1394 address block to process.
 843  */
 844 int
 845 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 846 {
 847         struct fw_bind *tfw, *prev = NULL;
 848
 849         if (fwb->start > fwb->end) {
 850                 printf("%s: invalid range\n", __func__);
 851                 return EINVAL;
 852         }
 853
 854         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 855                 if (fwb->end < tfw->start)
 856                         break;
 857                 prev = tfw;
 858         }
 859         if (prev == NULL) {
 860                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 861                 goto out;
 862         }
 863         if (prev->end < fwb->start) {
 864                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 865                 goto out;
 866         }
 867
 868         printf("%s: bind failed\n", __func__);
 869         return (EBUSY);
 870
 871 out:
 872         if (fwb->act_type == FWACT_CH)
 873                 STAILQ_INSERT_HEAD(&fc->ir[fwb->sub]->binds, fwb, chlist);
 874         return (0);
 875 }
 876
 877 /*
 878  * To free IEEE1394 address block.
 879  */
 880 int
 881 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 882 {
 883 #if 0
 884         struct fw_xfer *xfer, *next;
 885 #endif
 886         struct fw_bind *tfw;
 887
 888         crit_enter();
 889         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 890                 if (tfw == fwb) {
 891                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 892                         goto found;
 893                 }
 894
 895         printf("%s: no such bind\n", __func__);
 896         crit_exit();
 897         return (1);
 898 found:
 899 #if 0
 900         /* shall we do this? */
 901         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 902                 next = STAILQ_NEXT(xfer, link);
 903                 fw_xfer_free(xfer);
 904         }
 905         STAILQ_INIT(&fwb->xferlist);
 906 #endif
 907
 908         crit_exit();
 909         return 0;
 910 }
 911
 912 /*
 913  * To free transaction label.
 914  */
 915 static void
 916 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
 917 {
 918         struct tlabel *tl;
 919
 920         crit_enter();
 921         for( tl = STAILQ_FIRST(&fc->tlabels[xfer->tl]); tl != NULL;
 922                 tl = STAILQ_NEXT(tl, link)){
 923                 if(tl->xfer == xfer){
 924                         STAILQ_REMOVE(&fc->tlabels[xfer->tl], tl, tlabel, link);
 925                         free(tl, M_FW);
 926                         break;
 927                 }
 928         }
 929         crit_exit();
 930 }
 931
 932 /*
 933  * To obtain XFER structure by transaction label.
 934  */
 935 static struct fw_xfer *
 936 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel)
 937 {
 938         struct fw_xfer *xfer;
 939         struct tlabel *tl;
 940
 941         crit_enter();
 942
 943         for( tl = STAILQ_FIRST(&fc->tlabels[tlabel]); tl != NULL;
 944                 tl = STAILQ_NEXT(tl, link)){
 945                 if(tl->xfer->send.hdr.mode.hdr.dst == node){
 946                         xfer = tl->xfer;
 947                         crit_exit();
 948                         if (firewire_debug > 2)
 949                                 printf("fw_tl2xfer: found tl=%d\n", tlabel);
 950                         return(xfer);
 951                 }
 952         }
 953         if (firewire_debug > 1)
 954                 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
 955         crit_exit();
 956         return(NULL);
 957 }
 958
 959 /*
 960  * To allocate IEEE1394 XFER structure.
 961  */
 962 struct fw_xfer *
 963 fw_xfer_alloc(struct malloc_type *type)
 964 {
 965         struct fw_xfer *xfer;
 966
 967         xfer = malloc(sizeof(struct fw_xfer), type, M_INTWAIT | M_ZERO);
 968         xfer->malloc = type;
 969
 970         return xfer;
 971 }
 972
 973 struct fw_xfer *
 974 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
 975 {
 976         struct fw_xfer *xfer;
 977
 978         xfer = fw_xfer_alloc(type);
 979         xfer->send.pay_len = send_len;
 980         xfer->recv.pay_len = recv_len;
 981         if (xfer == NULL)
 982                 return(NULL);
 983         if (send_len > 0) {
 984                 xfer->send.payload = malloc(send_len, type, M_INTWAIT | M_ZERO);
 985                 if (xfer->send.payload == NULL) {
 986                         fw_xfer_free(xfer);
 987                         return(NULL);
 988                 }
 989         }
 990         if (recv_len > 0) {
 991                 xfer->recv.payload = malloc(recv_len, type, M_INTWAIT);
 992                 if (xfer->recv.payload == NULL) {
 993                         if (xfer->send.payload != NULL)
 994                                 free(xfer->send.payload, type);
 995                         fw_xfer_free(xfer);
 996                         return(NULL);
 997                 }
 998         }
 999         return(xfer);
1000 }
1001
1002 /*
1003  * IEEE1394 XFER post process.
1004  */
1005 void
1006 fw_xfer_done(struct fw_xfer *xfer)
1007 {
1008         if (xfer->act.hand == NULL) {
1009                 printf("act.hand == NULL\n");
1010                 return;
1011         }
1012
1013         if (xfer->fc == NULL)
1014                 panic("fw_xfer_done: why xfer->fc is NULL?");
1015
1016         xfer->act.hand(xfer);
1017 }
1018
1019 void
1020 fw_xfer_unload(struct fw_xfer* xfer)
1021 {
1022         if(xfer == NULL ) return;
1023         if(xfer->state == FWXF_INQ){
1024                 printf("fw_xfer_free FWXF_INQ\n");
1025                 crit_enter();
1026                 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1027                 xfer->q->queued --;
1028                 crit_exit();
1029         }
1030         if (xfer->fc != NULL) {
1031 #if 1
1032                 if(xfer->state == FWXF_START)
1033                         /*
1034                          * This could happen if:
1035                          *  1. We call fwohci_arcv() before fwohci_txd().
1036                          *  2. firewire_watch() is called.
1037                          */
1038                         printf("fw_xfer_free FWXF_START\n");
1039 #endif
1040                 fw_tl_free(xfer->fc, xfer);
1041         }
1042         xfer->state = FWXF_INIT;
1043         xfer->resp = 0;
1044         xfer->retry = 0;
1045 }
1046 /*
1047  * To free IEEE1394 XFER structure.
1048  */
1049 void
1050 fw_xfer_free_buf( struct fw_xfer* xfer)
1051 {
1052         if (xfer == NULL) {
1053                 printf("%s: xfer == NULL\n", __func__);
1054                 return;
1055         }
1056         fw_xfer_unload(xfer);
1057         if(xfer->send.payload != NULL){
1058                 free(xfer->send.payload, xfer->malloc);
1059         }
1060         if(xfer->recv.payload != NULL){
1061                 free(xfer->recv.payload, xfer->malloc);
1062         }
1063         free(xfer, xfer->malloc);
1064 }
1065
1066 void
1067 fw_xfer_free( struct fw_xfer* xfer)
1068 {
1069         if (xfer == NULL) {
1070                 printf("%s: xfer == NULL\n", __func__);
1071                 return;
1072         }
1073         fw_xfer_unload(xfer);
1074         free(xfer, xfer->malloc);
1075 }
1076
1077 void
1078 fw_asy_callback_free(struct fw_xfer *xfer)
1079 {
1080 #if 0
1081         printf("asyreq done state=%d resp=%d\n",
1082                                 xfer->state, xfer->resp);
1083 #endif
1084         fw_xfer_free(xfer);
1085 }
1086
1087 /*
1088  * To configure PHY.
1089  */
1090 static void
1091 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1092 {
1093         struct fw_xfer *xfer;
1094         struct fw_pkt *fp;
1095
1096         fc->status = FWBUSPHYCONF;
1097
1098         xfer = fw_xfer_alloc(M_FWXFER);
1099         if (xfer == NULL)
1100                 return;
1101         xfer->fc = fc;
1102         xfer->retry_req = fw_asybusy;
1103         xfer->act.hand = fw_asy_callback_free;
1104
1105         fp = &xfer->send.hdr;
1106         fp->mode.ld[1] = 0;
1107         if (root_node >= 0)
1108                 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1109         if (gap_count >= 0)
1110                 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1111         fp->mode.ld[2] = ~fp->mode.ld[1];
1112 /* XXX Dangerous, how to pass PHY packet to device driver */
1113         fp->mode.common.tcode |= FWTCODE_PHY;
1114
1115         if (firewire_debug)
1116                 printf("send phy_config root_node=%d gap_count=%d\n",
1117                                                 root_node, gap_count);
1118         fw_asyreq(fc, -1, xfer);
1119 }
1120
1121 #if 0
1122 /*
1123  * Dump self ID.
1124  */
1125 static void
1126 fw_print_sid(u_int32_t sid)
1127 {
1128         union fw_self_id *s;
1129         s = (union fw_self_id *) &sid;
1130         printf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d"
1131                 " p0:%d p1:%d p2:%d i:%d m:%d\n",
1132                 s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1133                 s->p0.phy_speed, s->p0.phy_delay, s->p0.contender,
1134                 s->p0.power_class, s->p0.port0, s->p0.port1,
1135                 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1136 }
1137 #endif
1138
1139 /*
1140  * To receive self ID.
1141  */
1142 void fw_sidrcv(struct firewire_comm* fc, u_int32_t *sid, u_int len)
1143 {
1144         u_int32_t *p;
1145         union fw_self_id *self_id;
1146         u_int i, j, node, c_port = 0, i_branch = 0;
1147
1148         fc->sid_cnt = len /(sizeof(u_int32_t) * 2);
1149         fc->status = FWBUSINIT;
1150         fc->max_node = fc->nodeid & 0x3f;
1151         CSRARC(fc, NODE_IDS) = ((u_int32_t)fc->nodeid) << 16;
1152         fc->status = FWBUSCYMELECT;
1153         fc->topology_map->crc_len = 2;
1154         fc->topology_map->generation ++;
1155         fc->topology_map->self_id_count = 0;
1156         fc->topology_map->node_count = 0;
1157         fc->speed_map->generation ++;
1158         fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1159         self_id = &fc->topology_map->self_id[0];
1160         for(i = 0; i < fc->sid_cnt; i ++){
1161                 if (sid[1] != ~sid[0]) {
1162                         printf("fw_sidrcv: invalid self-id packet\n");
1163                         sid += 2;
1164                         continue;
1165                 }
1166                 *self_id = *((union fw_self_id *)sid);
1167                 fc->topology_map->crc_len++;
1168                 if(self_id->p0.sequel == 0){
1169                         fc->topology_map->node_count ++;
1170                         c_port = 0;
1171 #if 0
1172                         fw_print_sid(sid[0]);
1173 #endif
1174                         node = self_id->p0.phy_id;
1175                         if(fc->max_node < node){
1176                                 fc->max_node = self_id->p0.phy_id;
1177                         }
1178                         /* XXX I'm not sure this is the right speed_map */
1179                         fc->speed_map->speed[node][node]
1180                                         = self_id->p0.phy_speed;
1181                         for (j = 0; j < node; j ++) {
1182                                 fc->speed_map->speed[j][node]
1183                                         = fc->speed_map->speed[node][j]
1184                                         = min(fc->speed_map->speed[j][j],
1185                                                         self_id->p0.phy_speed);
1186                         }
1187                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1188                           (self_id->p0.link_active && self_id->p0.contender)) {
1189                                 fc->irm = self_id->p0.phy_id;
1190                         }
1191                         if(self_id->p0.port0 >= 0x2){
1192                                 c_port++;
1193                         }
1194                         if(self_id->p0.port1 >= 0x2){
1195                                 c_port++;
1196                         }
1197                         if(self_id->p0.port2 >= 0x2){
1198                                 c_port++;
1199                         }
1200                 }
1201                 if(c_port > 2){
1202                         i_branch += (c_port - 2);
1203                 }
1204                 sid += 2;
1205                 self_id++;
1206                 fc->topology_map->self_id_count ++;
1207         }
1208         device_printf(fc->bdev, "%d nodes", fc->max_node + 1);
1209         /* CRC */
1210         fc->topology_map->crc = fw_crc16(
1211                         (u_int32_t *)&fc->topology_map->generation,
1212                         fc->topology_map->crc_len * 4);
1213         fc->speed_map->crc = fw_crc16(
1214                         (u_int32_t *)&fc->speed_map->generation,
1215                         fc->speed_map->crc_len * 4);
1216         /* byteswap and copy to CSR */
1217         p = (u_int32_t *)fc->topology_map;
1218         for (i = 0; i <= fc->topology_map->crc_len; i++)
1219                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1220         p = (u_int32_t *)fc->speed_map;
1221         CSRARC(fc, SPED_MAP) = htonl(*p++);
1222         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1223         /* don't byte-swap u_int8_t array */
1224         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1225
1226         fc->max_hop = fc->max_node - i_branch;
1227         printf(", maxhop <= %d", fc->max_hop);
1228
1229         if(fc->irm == -1 ){
1230                 printf(", Not found IRM capable node");
1231         }else{
1232                 printf(", cable IRM = %d", fc->irm);
1233                 if (fc->irm == fc->nodeid)
1234                         printf(" (me)");
1235         }
1236         printf("\n");
1237
1238         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1239                 if (fc->irm == fc->nodeid) {
1240                         fc->status = FWBUSMGRDONE;
1241                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1242                         fw_bmr(fc);
1243                 } else {
1244                         fc->status = FWBUSMGRELECT;
1245                         callout_reset(&fc->bmr_callout, hz/8,
1246                                 (void *)fw_try_bmr, (void *)fc);
1247                 }
1248         } else
1249                 fc->status = FWBUSMGRDONE;
1250
1251         callout_reset(&fc->busprobe_callout, hz/4,
1252                         (void *)fw_bus_probe, (void *)fc);
1253 }
1254
1255 /*
1256  * To probe devices on the IEEE1394 bus.
1257  */
1258 static void
1259 fw_bus_probe(struct firewire_comm *fc)
1260 {
1261         struct fw_device *fwdev;
1262
1263         crit_enter();
1264         fc->status = FWBUSEXPLORE;
1265         fc->retry_count = 0;
1266
1267         /* Invalidate all devices, just after bus reset. */
1268         STAILQ_FOREACH(fwdev, &fc->devices, link)
1269                 if (fwdev->status != FWDEVINVAL) {
1270                         fwdev->status = FWDEVINVAL;
1271                         fwdev->rcnt = 0;
1272                 }
1273
1274         fc->ongonode = 0;
1275         fc->ongoaddr = CSRROMOFF;
1276         fc->ongodev = NULL;
1277         fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
1278         fw_bus_explore(fc);
1279         crit_exit();
1280 }
1281
1282 /*
1283  * To collect device informations on the IEEE1394 bus.
1284  */
1285 static void
1286 fw_bus_explore(struct firewire_comm *fc )
1287 {
1288         int err = 0;
1289         struct fw_device *fwdev, *pfwdev, *tfwdev;
1290         u_int32_t addr;
1291         struct fw_xfer *xfer;
1292         struct fw_pkt *fp;
1293
1294         if(fc->status != FWBUSEXPLORE)
1295                 return;
1296
1297 loop:
1298         if(fc->ongonode == fc->nodeid) fc->ongonode++;
1299
1300         if(fc->ongonode > fc->max_node) goto done;
1301         if(fc->ongonode >= 0x3f) goto done;
1302
1303         /* check link */
1304         /* XXX we need to check phy_id first */
1305         if (!fc->topology_map->self_id[fc->ongonode].p0.link_active) {
1306                 if (firewire_debug)
1307                         printf("node%d: link down\n", fc->ongonode);
1308                 fc->ongonode++;
1309                 goto loop;
1310         }
1311
1312         if(fc->ongoaddr <= CSRROMOFF &&
1313                 fc->ongoeui.hi == 0xffffffff &&
1314                 fc->ongoeui.lo == 0xffffffff ){
1315                 fc->ongoaddr = CSRROMOFF;
1316                 addr = 0xf0000000 | fc->ongoaddr;
1317         }else if(fc->ongoeui.hi == 0xffffffff ){
1318                 fc->ongoaddr = CSRROMOFF + 0xc;
1319                 addr = 0xf0000000 | fc->ongoaddr;
1320         }else if(fc->ongoeui.lo == 0xffffffff ){
1321                 fc->ongoaddr = CSRROMOFF + 0x10;
1322                 addr = 0xf0000000 | fc->ongoaddr;
1323         }else if(fc->ongodev == NULL){
1324                 STAILQ_FOREACH(fwdev, &fc->devices, link)
1325                         if (FW_EUI64_EQUAL(fwdev->eui, fc->ongoeui))
1326                                 break;
1327                 if(fwdev != NULL){
1328                         fwdev->dst = fc->ongonode;
1329                         fwdev->status = FWDEVINIT;
1330                         fc->ongodev = fwdev;
1331                         fc->ongoaddr = CSRROMOFF;
1332                         addr = 0xf0000000 | fc->ongoaddr;
1333                         goto dorequest;
1334                 }
1335                 fwdev = malloc(sizeof(struct fw_device), M_FW,
1336                                 M_WAITOK | M_ZERO);
1337                 fwdev->fc = fc;
1338                 fwdev->rommax = 0;
1339                 fwdev->dst = fc->ongonode;
1340                 fwdev->eui.hi = fc->ongoeui.hi; fwdev->eui.lo = fc->ongoeui.lo;
1341                 fwdev->status = FWDEVINIT;
1342                 fwdev->speed = fc->speed_map->speed[fc->nodeid][fc->ongonode];
1343
1344                 pfwdev = NULL;
1345                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1346                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1347                                         (tfwdev->eui.hi == fwdev->eui.hi &&
1348                                         tfwdev->eui.lo > fwdev->eui.lo))
1349                                 break;
1350                         pfwdev = tfwdev;
1351                 }
1352                 if (pfwdev == NULL)
1353                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1354                 else
1355                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1356
1357                 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1358                         linkspeed[fwdev->speed],
1359                         fc->ongoeui.hi, fc->ongoeui.lo);
1360
1361                 fc->ongodev = fwdev;
1362                 fc->ongoaddr = CSRROMOFF;
1363                 addr = 0xf0000000 | fc->ongoaddr;
1364         }else{
1365                 addr = 0xf0000000 | fc->ongoaddr;
1366         }
1367 dorequest:
1368 #if 0
1369         xfer = asyreqq(fc, FWSPD_S100, 0, 0,
1370                 ((FWLOCALBUS | fc->ongonode) << 16) | 0xffff , addr,
1371                 fw_bus_explore_callback);
1372         if(xfer == NULL) goto done;
1373 #else
1374         xfer = fw_xfer_alloc(M_FWXFER);
1375         if(xfer == NULL){
1376                 goto done;
1377         }
1378         xfer->send.spd = 0;
1379         fp = &xfer->send.hdr;
1380         fp->mode.rreqq.dest_hi = 0xffff;
1381         fp->mode.rreqq.tlrt = 0;
1382         fp->mode.rreqq.tcode = FWTCODE_RREQQ;
1383         fp->mode.rreqq.pri = 0;
1384         fp->mode.rreqq.src = 0;
1385         fp->mode.rreqq.dst = FWLOCALBUS | fc->ongonode;
1386         fp->mode.rreqq.dest_lo = addr;
1387         xfer->act.hand = fw_bus_explore_callback;
1388
1389         if (firewire_debug)
1390                 printf("node%d: explore addr=0x%x\n",
1391                                 fc->ongonode, fc->ongoaddr);
1392         err = fw_asyreq(fc, -1, xfer);
1393         if(err){
1394                 fw_xfer_free( xfer);
1395                 return;
1396         }
1397 #endif
1398         return;
1399 done:
1400         /* fw_attach_devs */
1401         fc->status = FWBUSEXPDONE;
1402         if (firewire_debug)
1403                 printf("bus_explore done\n");
1404         fw_attach_dev(fc);
1405         return;
1406
1407 }
1408
1409 /* Portable Async. request read quad */
1410 struct fw_xfer *
1411 asyreqq(struct firewire_comm *fc, u_int8_t spd, u_int8_t tl, u_int8_t rt,
1412         u_int32_t addr_hi, u_int32_t addr_lo,
1413         void (*hand) (struct fw_xfer*))
1414 {
1415         struct fw_xfer *xfer;
1416         struct fw_pkt *fp;
1417         int err;
1418
1419         xfer = fw_xfer_alloc(M_FWXFER);
1420         if (xfer == NULL)
1421                 return NULL;
1422
1423         xfer->send.spd = spd; /* XXX:min(spd, fc->spd) */
1424         fp = &xfer->send.hdr;
1425         fp->mode.rreqq.dest_hi = addr_hi & 0xffff;
1426         if(tl & FWP_TL_VALID){
1427                 fp->mode.rreqq.tlrt = (tl & 0x3f) << 2;
1428         }else{
1429                 fp->mode.rreqq.tlrt = 0;
1430         }
1431         fp->mode.rreqq.tlrt |= rt & 0x3;
1432         fp->mode.rreqq.tcode = FWTCODE_RREQQ;
1433         fp->mode.rreqq.pri = 0;
1434         fp->mode.rreqq.src = 0;
1435         fp->mode.rreqq.dst = addr_hi >> 16;
1436         fp->mode.rreqq.dest_lo = addr_lo;
1437         xfer->act.hand = hand;
1438
1439         err = fw_asyreq(fc, -1, xfer);
1440         if(err){
1441                 fw_xfer_free( xfer);
1442                 return NULL;
1443         }
1444         return xfer;
1445 }
1446
1447 /*
1448  * Callback for the IEEE1394 bus information collection.
1449  */
1450 static void
1451 fw_bus_explore_callback(struct fw_xfer *xfer)
1452 {
1453         struct firewire_comm *fc;
1454         struct fw_pkt *sfp,*rfp;
1455         struct csrhdr *chdr;
1456         struct csrdir *csrd;
1457         struct csrreg *csrreg;
1458         u_int32_t offset;
1459
1460
1461         if(xfer == NULL) {
1462                 printf("xfer == NULL\n");
1463                 return;
1464         }
1465         fc = xfer->fc;
1466
1467         if (firewire_debug)
1468                 printf("node%d: callback addr=0x%x\n",
1469                         fc->ongonode, fc->ongoaddr);
1470
1471         if(xfer->resp != 0){
1472                 printf("node%d: resp=%d addr=0x%x\n",
1473                         fc->ongonode, xfer->resp, fc->ongoaddr);
1474                 goto errnode;
1475         }
1476
1477         sfp = &xfer->send.hdr;
1478         rfp = &xfer->recv.hdr;
1479 #if 0
1480         {
1481                 u_int32_t *qld;
1482                 int i;
1483                 qld = (u_int32_t *)xfer->recv.buf;
1484                 printf("len:%d\n", xfer->recv.len);
1485                 for( i = 0 ; i <= xfer->recv.len && i < 32; i+= 4){
1486                         printf("0x%08x ", rfp->mode.ld[i/4]);
1487                         if((i % 16) == 15) printf("\n");
1488                 }
1489                 if((i % 16) != 15) printf("\n");
1490         }
1491 #endif
1492         if(fc->ongodev == NULL){
1493                 if(sfp->mode.rreqq.dest_lo == (0xf0000000 | CSRROMOFF)){
1494                         rfp->mode.rresq.data = ntohl(rfp->mode.rresq.data);
1495                         chdr = (struct csrhdr *)(&rfp->mode.rresq.data);
1496 /* If CSR is minimal confinguration, more investgation is not needed. */
1497                         if(chdr->info_len == 1){
1498                                 if (firewire_debug)
1499                                         printf("node%d: minimal config\n",
1500                                                                 fc->ongonode);
1501                                 goto nextnode;
1502                         }else{
1503                                 fc->ongoaddr = CSRROMOFF + 0xc;
1504                         }
1505                 }else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0xc))){
1506                         fc->ongoeui.hi = ntohl(rfp->mode.rresq.data);
1507                         fc->ongoaddr = CSRROMOFF + 0x10;
1508                 }else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0x10))){
1509                         fc->ongoeui.lo = ntohl(rfp->mode.rresq.data);
1510                         if (fc->ongoeui.hi == 0 && fc->ongoeui.lo == 0) {
1511                                 if (firewire_debug)
1512                                         printf("node%d: eui64 is zero.\n",
1513                                                         fc->ongonode);
1514                                 goto nextnode;
1515                         }
1516                         fc->ongoaddr = CSRROMOFF;
1517                 }
1518         }else{
1519                 if (fc->ongoaddr == CSRROMOFF &&
1520                     fc->ongodev->csrrom[0] == ntohl(rfp->mode.rresq.data)) {
1521                         fc->ongodev->status = FWDEVATTACHED;
1522                         goto nextnode;
1523                 }
1524                 fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4] = ntohl(rfp->mode.rresq.data);
1525                 if(fc->ongoaddr > fc->ongodev->rommax){
1526                         fc->ongodev->rommax = fc->ongoaddr;
1527                 }
1528                 csrd = SLIST_FIRST(&fc->ongocsr);
1529                 if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
1530                         chdr = (struct csrhdr *)(fc->ongodev->csrrom);
1531                         offset = CSRROMOFF;
1532                 }else{
1533                         chdr = (struct csrhdr *)&fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4];
1534                         offset = csrd->off;
1535                 }
1536                 if(fc->ongoaddr > (CSRROMOFF + 0x14) && fc->ongoaddr != offset){
1537                         csrreg = (struct csrreg *)&fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4];
1538                         if( csrreg->key == 0x81 || csrreg->key == 0xd1){
1539                                 csrd = SLIST_FIRST(&fc->csrfree);
1540                                 if(csrd == NULL){
1541                                         goto nextnode;
1542                                 }else{
1543                                         csrd->ongoaddr = fc->ongoaddr;
1544                                         fc->ongoaddr += csrreg->val * 4;
1545                                         csrd->off = fc->ongoaddr;
1546                                         SLIST_REMOVE_HEAD(&fc->csrfree, link);
1547                                         SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
1548                                         goto nextaddr;
1549                                 }
1550                         }
1551                 }
1552                 fc->ongoaddr += 4;
1553                 if(((fc->ongoaddr - offset)/4 > chdr->crc_len) &&
1554                                 (fc->ongodev->rommax < 0x414)){
1555                         if(fc->ongodev->rommax <= 0x414){
1556                                 csrd = SLIST_FIRST(&fc->csrfree);
1557                                 if(csrd == NULL) goto nextnode;
1558                                 csrd->off = fc->ongoaddr;
1559                                 csrd->ongoaddr = fc->ongoaddr;
1560                                 SLIST_REMOVE_HEAD(&fc->csrfree, link);
1561                                 SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
1562                         }
1563                         goto nextaddr;
1564                 }
1565
1566                 while(((fc->ongoaddr - offset)/4 > chdr->crc_len)){
1567                         if(csrd == NULL){
1568                                 goto nextnode;
1569                         };
1570                         fc->ongoaddr = csrd->ongoaddr + 4;
1571                         SLIST_REMOVE_HEAD(&fc->ongocsr, link);
1572                         SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
1573                         csrd = SLIST_FIRST(&fc->ongocsr);
1574                         if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
1575                                 chdr = (struct csrhdr *)(fc->ongodev->csrrom);
1576                                 offset = CSRROMOFF;
1577                         }else{
1578                                 chdr = (struct csrhdr *)&(fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4]);
1579                                 offset = csrd->off;
1580                         }
1581                 }
1582                 if((fc->ongoaddr - CSRROMOFF) > CSRROMSIZE){
1583                         goto nextnode;
1584                 }
1585         }
1586 nextaddr:
1587         fw_xfer_free( xfer);
1588         fw_bus_explore(fc);
1589         return;
1590 errnode:
1591         fc->retry_count++;
1592         if (fc->ongodev != NULL)
1593                 fc->ongodev->status = FWDEVINVAL;
1594 nextnode:
1595         fw_xfer_free( xfer);
1596         fc->ongonode++;
1597 /* housekeeping work space */
1598         fc->ongoaddr = CSRROMOFF;
1599         fc->ongodev = NULL;
1600         fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
1601         while((csrd = SLIST_FIRST(&fc->ongocsr)) != NULL){
1602                 SLIST_REMOVE_HEAD(&fc->ongocsr, link);
1603                 SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
1604         }
1605         fw_bus_explore(fc);
1606         return;
1607 }
1608
1609 /*
1610  * To attach sub-devices layer onto IEEE1394 bus.
1611  */
1612 static void
1613 fw_attach_dev(struct firewire_comm *fc)
1614 {
1615         struct fw_device *fwdev, *next;
1616         int i, err;
1617         device_t *devlistp;
1618         int devcnt;
1619         struct firewire_dev_comm *fdc;
1620
1621         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1622                 next = STAILQ_NEXT(fwdev, link);
1623                 if (fwdev->status == FWDEVINIT) {
1624                         fwdev->status = FWDEVATTACHED;
1625                 } else if (fwdev->status == FWDEVINVAL) {
1626                         fwdev->rcnt ++;
1627                         if (fwdev->rcnt > hold_count) {
1628                                 /*
1629                                  * Remove devices which have not been seen
1630                                  * for a while.
1631                                  */
1632                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1633                                     link);
1634                                 free(fwdev, M_FW);
1635                         }
1636                 }
1637         }
1638
1639         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1640         if( err != 0 )
1641                 return;
1642         for( i = 0 ; i < devcnt ; i++){
1643                 if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
1644                         fdc = device_get_softc(devlistp[i]);
1645                         if (fdc->post_explore != NULL)
1646                                 fdc->post_explore(fdc);
1647                 }
1648         }
1649         free(devlistp, M_TEMP);
1650
1651         if (fc->retry_count > 0) {
1652                 printf("probe failed for %d node\n", fc->retry_count);
1653 #if 0
1654                 callout_reset(&fc->retry_probe_callout, hz*2,
1655                                         (void *)fc->ibr, (void *)fc);
1656 #endif
1657         }
1658         return;
1659 }
1660
1661 /*
1662  * To allocate uniq transaction label.
1663  */
1664 static int
1665 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1666 {
1667         u_int i;
1668         struct tlabel *tl, *tmptl;
1669         static u_int32_t label = 0;
1670
1671         crit_enter();
1672         for( i = 0 ; i < 0x40 ; i ++){
1673                 label = (label + 1) & 0x3f;
1674                 for(tmptl = STAILQ_FIRST(&fc->tlabels[label]);
1675                         tmptl != NULL; tmptl = STAILQ_NEXT(tmptl, link)){
1676                         if (tmptl->xfer->send.hdr.mode.hdr.dst ==
1677                             xfer->send.hdr.mode.hdr.dst)
1678                                 break;
1679                 }
1680                 if(tmptl == NULL) {
1681                         tl = malloc(sizeof(struct tlabel), M_FW, M_WAITOK);
1682                         tl->xfer = xfer;
1683                         STAILQ_INSERT_TAIL(&fc->tlabels[label], tl, link);
1684                         crit_exit();
1685                         if (firewire_debug > 1)
1686                                 printf("fw_get_tlabel: dst=%d tl=%d\n",
1687                                     xfer->send.hdr.mode.hdr.dst, label);
1688                         return(label);
1689                 }
1690         }
1691         crit_exit();
1692
1693         printf("fw_get_tlabel: no free tlabel\n");
1694         return(-1);
1695 }
1696
1697 static void
1698 fw_rcv_copy(struct fw_rcv_buf *rb)
1699 {
1700         struct fw_pkt *pkt;
1701         u_char *p;
1702         struct tcode_info *tinfo;
1703         u_int res, i, len, plen;
1704
1705         rb->xfer->recv.spd -= rb->spd;
1706
1707         pkt = (struct fw_pkt *)rb->vec->iov_base;
1708         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1709
1710         /* Copy header */
1711         p = (u_char *)&rb->xfer->recv.hdr;
1712         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1713         rb->vec->iov_base = (uint8_t *)rb->vec->iov_base + tinfo->hdr_len;
1714         rb->vec->iov_len -= tinfo->hdr_len;
1715
1716         /* Copy payload */
1717         p = (u_char *)rb->xfer->recv.payload;
1718         res = rb->xfer->recv.pay_len;
1719
1720         /* special handling for RRESQ */
1721         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1722             p != NULL && res >= sizeof(u_int32_t)) {
1723                 *(u_int32_t *)p = pkt->mode.rresq.data;
1724                 rb->xfer->recv.pay_len = sizeof(u_int32_t);
1725                 return;
1726         }
1727
1728         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1729                 return;
1730
1731         plen = pkt->mode.rresb.len;
1732
1733         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1734                 len = MIN(rb->vec->iov_len, plen);
1735                 if (res < len) {
1736                         printf("rcv buffer(%d) is %d bytes short.\n",
1737                             rb->xfer->recv.pay_len, len - res);
1738                         len = res;
1739                 }
1740                 bcopy(rb->vec->iov_base, p, len);
1741                 p += len;
1742                 res -= len;
1743                 plen -= len;
1744                 if (res == 0 || plen == 0)
1745                         break;
1746         }
1747         rb->xfer->recv.pay_len -= res;
1748
1749 }
1750
1751 /*
1752  * Generic packet receving process.
1753  */
1754 void
1755 fw_rcv(struct fw_rcv_buf *rb)
1756 {
1757         struct fw_pkt *fp, *resfp;
1758         struct fw_bind *bind;
1759         int tcode;
1760         int i, len, oldstate;
1761 #if 0
1762         {
1763                 u_int32_t *qld;
1764                 int i;
1765                 qld = (u_int32_t *)buf;
1766                 printf("spd %d len:%d\n", spd, len);
1767                 for( i = 0 ; i <= len && i < 32; i+= 4){
1768                         printf("0x%08x ", ntohl(qld[i/4]));
1769                         if((i % 16) == 15) printf("\n");
1770                 }
1771                 if((i % 16) != 15) printf("\n");
1772         }
1773 #endif
1774         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1775         tcode = fp->mode.common.tcode;
1776         switch (tcode) {
1777         case FWTCODE_WRES:
1778         case FWTCODE_RRESQ:
1779         case FWTCODE_RRESB:
1780         case FWTCODE_LRES:
1781                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1782                                         fp->mode.hdr.tlrt >> 2);
1783                 if(rb->xfer == NULL) {
1784                         printf("fw_rcv: unknown response "
1785                             "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1786                             tcode_str[tcode], tcode,
1787                             fp->mode.hdr.src,
1788                             fp->mode.hdr.tlrt >> 2,
1789                             fp->mode.hdr.tlrt & 3,
1790                             fp->mode.rresq.data);
1791 #if 1
1792                         printf("try ad-hoc work around!!\n");
1793                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1794                                         (fp->mode.hdr.tlrt >> 2)^3);
1795                         if (rb->xfer == NULL) {
1796                                 printf("no use...\n");
1797                                 goto err;
1798                         }
1799 #else
1800                         goto err;
1801 #endif
1802                 }
1803                 fw_rcv_copy(rb);
1804                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1805                         rb->xfer->resp = EIO;
1806                 else
1807                         rb->xfer->resp = 0;
1808                 /* make sure the packet is drained in AT queue */
1809                 oldstate = rb->xfer->state;
1810                 rb->xfer->state = FWXF_RCVD;
1811                 switch (oldstate) {
1812                 case FWXF_SENT:
1813                         fw_xfer_done(rb->xfer);
1814                         break;
1815                 case FWXF_START:
1816 #if 0
1817                         if (firewire_debug)
1818                                 printf("not sent yet tl=%x\n", rb->xfer->tl);
1819 #endif
1820                         break;
1821                 default:
1822                         printf("unexpected state %d\n", rb->xfer->state);
1823                 }
1824                 return;
1825         case FWTCODE_WREQQ:
1826         case FWTCODE_WREQB:
1827         case FWTCODE_RREQQ:
1828         case FWTCODE_RREQB:
1829         case FWTCODE_LREQ:
1830                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1831                         fp->mode.rreqq.dest_lo);
1832                 if(bind == NULL){
1833                         printf("Unknown service addr 0x%04x:0x%08x %s(%x)"
1834                             " src=0x%x data=%x\n",
1835                             fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo,
1836                             tcode_str[tcode], tcode,
1837                             fp->mode.hdr.src, ntohl(fp->mode.wreqq.data));
1838                         if (rb->fc->status == FWBUSRESET) {
1839                                 printf("fw_rcv: cannot respond(bus reset)!\n");
1840                                 goto err;
1841                         }
1842                         rb->xfer = fw_xfer_alloc(M_FWXFER);
1843                         if(rb->xfer == NULL){
1844                                 return;
1845                         }
1846                         rb->xfer->send.spd = rb->spd;
1847                         rb->xfer->send.pay_len = 0;
1848                         resfp = &rb->xfer->send.hdr;
1849                         switch (tcode) {
1850                         case FWTCODE_WREQQ:
1851                         case FWTCODE_WREQB:
1852                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
1853                                 break;
1854                         case FWTCODE_RREQQ:
1855                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
1856                                 break;
1857                         case FWTCODE_RREQB:
1858                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
1859                                 break;
1860                         case FWTCODE_LREQ:
1861                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
1862                                 break;
1863                         }
1864                         resfp->mode.hdr.dst = fp->mode.hdr.src;
1865                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
1866                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
1867                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
1868                         resfp->mode.rresb.extcode = 0;
1869                         resfp->mode.rresb.len = 0;
1870 /*
1871                         rb->xfer->act.hand = fw_asy_callback;
1872 */
1873                         rb->xfer->act.hand = fw_xfer_free;
1874                         if(fw_asyreq(rb->fc, -1, rb->xfer)){
1875                                 fw_xfer_free(rb->xfer);
1876                                 return;
1877                         }
1878                         goto err;
1879                 }
1880                 len = 0;
1881                 for (i = 0; i < rb->nvec; i ++)
1882                         len += rb->vec[i].iov_len;
1883                 switch(bind->act_type){
1884                 case FWACT_XFER:
1885                         crit_enter();
1886                         rb->xfer = STAILQ_FIRST(&bind->xferlist);
1887                         if (rb->xfer == NULL) {
1888                                 printf("Discard a packet for this bind.\n");
1889                                 crit_exit();
1890                                 goto err;
1891                         }
1892                         STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1893                         crit_exit();
1894                         fw_rcv_copy(rb);
1895                         rb->xfer->act.hand(rb->xfer);
1896                         return;
1897                         break;
1898                 case FWACT_CH:
1899                         if(rb->fc->ir[bind->sub]->queued >=
1900                                 rb->fc->ir[bind->sub]->maxq){
1901                                 device_printf(rb->fc->bdev,
1902                                         "Discard a packet %x %d\n",
1903                                         bind->sub,
1904                                         rb->fc->ir[bind->sub]->queued);
1905                                 goto err;
1906                         }
1907                         crit_enter();
1908                         rb->xfer = STAILQ_FIRST(&bind->xferlist);
1909                         if (rb->xfer == NULL) {
1910                                 printf("Discard packet for this bind\n");
1911                                 goto err;
1912                         }
1913                         STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1914                         crit_exit();
1915                         fw_rcv_copy(rb);
1916                         crit_enter();
1917                         rb->fc->ir[bind->sub]->queued++;
1918                         STAILQ_INSERT_TAIL(&rb->fc->ir[bind->sub]->q,
1919                             rb->xfer, link);
1920                         crit_exit();
1921
1922                         wakeup((caddr_t)rb->fc->ir[bind->sub]);
1923
1924                         return;
1925                         break;
1926                 default:
1927                         goto err;
1928                         break;
1929                 }
1930                 break;
1931 #if 0 /* shouldn't happen ?? or for GASP */
1932         case FWTCODE_STREAM:
1933         {
1934                 struct fw_xferq *xferq;
1935
1936                 xferq = rb->fc->ir[sub];
1937 #if 0
1938                 printf("stream rcv dma %d len %d off %d spd %d\n",
1939                         sub, len, off, spd);
1940 #endif
1941                 if(xferq->queued >= xferq->maxq) {
1942                         printf("receive queue is full\n");
1943                         goto err;
1944                 }
1945                 /* XXX get xfer from xfer queue, we don't need copy for
1946                         per packet mode */
1947                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
1948                                                 vec[0].iov_len);
1949                 if (rb->xfer == NULL) goto err;
1950                 fw_rcv_copy(rb)
1951                 crit_enter();
1952                 xferq->queued++;
1953                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
1954                 crit_exit();
1955                 sc = device_get_softc(rb->fc->bdev);
1956 #if defined(__DragonFly__) || __FreeBSD_version < 500000
1957                 if (&xferq->rsel.si_pid != 0)
1958 #else
1959                 if (SEL_WAITING(&xferq->rsel))
1960 #endif
1961                         selwakeuppri(&xferq->rsel, FWPRI);
1962                 if (xferq->flag & FWXFERQ_WAKEUP) {
1963                         xferq->flag &= ~FWXFERQ_WAKEUP;
1964                         wakeup((caddr_t)xferq);
1965                 }
1966                 if (xferq->flag & FWXFERQ_HANDLER) {
1967                         xferq->hand(xferq);
1968                 }
1969                 return;
1970                 break;
1971         }
1972 #endif
1973         default:
1974                 printf("fw_rcv: unknow tcode %d\n", tcode);
1975                 break;
1976         }
1977 err:
1978         return;
1979 }
1980
1981 /*
1982  * Post process for Bus Manager election process.
1983  */
1984 static void
1985 fw_try_bmr_callback(struct fw_xfer *xfer)
1986 {
1987         struct firewire_comm *fc;
1988         int bmr;
1989
1990         if (xfer == NULL)
1991                 return;
1992         fc = xfer->fc;
1993         if (xfer->resp != 0)
1994                 goto error;
1995         if (xfer->recv.payload == NULL)
1996                 goto error;
1997         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
1998                 goto error;
1999
2000         bmr = ntohl(xfer->recv.payload[0]);
2001         if (bmr == 0x3f)
2002                 bmr = fc->nodeid;
2003
2004         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2005         fw_xfer_free_buf(xfer);
2006         fw_bmr(fc);
2007         return;
2008
2009 error:
2010         device_printf(fc->bdev, "bus manager election failed\n");
2011         fw_xfer_free_buf(xfer);
2012 }
2013
2014
2015 /*
2016  * To candidate Bus Manager election process.
2017  */
2018 static void
2019 fw_try_bmr(void *arg)
2020 {
2021         struct fw_xfer *xfer;
2022         struct firewire_comm *fc = (struct firewire_comm *)arg;
2023         struct fw_pkt *fp;
2024         int err = 0;
2025
2026         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2027         if(xfer == NULL){
2028                 return;
2029         }
2030         xfer->send.spd = 0;
2031         fc->status = FWBUSMGRELECT;
2032
2033         fp = &xfer->send.hdr;
2034         fp->mode.lreq.dest_hi = 0xffff;
2035         fp->mode.lreq.tlrt = 0;
2036         fp->mode.lreq.tcode = FWTCODE_LREQ;
2037         fp->mode.lreq.pri = 0;
2038         fp->mode.lreq.src = 0;
2039         fp->mode.lreq.len = 8;
2040         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2041         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2042         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2043         xfer->send.payload[0] = htonl(0x3f);
2044         xfer->send.payload[1] = htonl(fc->nodeid);
2045         xfer->act.hand = fw_try_bmr_callback;
2046
2047         err = fw_asyreq(fc, -1, xfer);
2048         if(err){
2049                 fw_xfer_free_buf(xfer);
2050                 return;
2051         }
2052         return;
2053 }
2054
2055 #ifdef FW_VMACCESS
2056 /*
2057  * Software implementation for physical memory block access.
2058  * XXX:Too slow, usef for debug purpose only.
2059  */
2060 static void
2061 fw_vmaccess(struct fw_xfer *xfer){
2062         struct fw_pkt *rfp, *sfp = NULL;
2063         u_int32_t *ld = (u_int32_t *)xfer->recv.buf;
2064
2065         printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2066                         xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
2067         printf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2068         if(xfer->resp != 0){
2069                 fw_xfer_free( xfer);
2070                 return;
2071         }
2072         if(xfer->recv.buf == NULL){
2073                 fw_xfer_free( xfer);
2074                 return;
2075         }
2076         rfp = (struct fw_pkt *)xfer->recv.buf;
2077         switch(rfp->mode.hdr.tcode){
2078                 /* XXX need fix for 64bit arch */
2079                 case FWTCODE_WREQB:
2080                         xfer->send.buf = malloc(12, M_FW, M_WAITOK);
2081                         xfer->send.len = 12;
2082                         sfp = (struct fw_pkt *)xfer->send.buf;
2083                         bcopy(rfp->mode.wreqb.payload,
2084                                 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
2085                         sfp->mode.wres.tcode = FWTCODE_WRES;
2086                         sfp->mode.wres.rtcode = 0;
2087                         break;
2088                 case FWTCODE_WREQQ:
2089                         xfer->send.buf = malloc(12, M_FW, M_WAITOK);
2090                         xfer->send.len = 12;
2091                         sfp->mode.wres.tcode = FWTCODE_WRES;
2092                         *((u_int32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
2093                         sfp->mode.wres.rtcode = 0;
2094                         break;
2095                 case FWTCODE_RREQB:
2096                         xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_WAITOK);
2097                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2098                         sfp = (struct fw_pkt *)xfer->send.buf;
2099                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2100                                 sfp->mode.rresb.payload, (u_int16_t)ntohs(rfp->mode.rreqb.len));
2101                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2102                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2103                         sfp->mode.rresb.rtcode = 0;
2104                         sfp->mode.rresb.extcode = 0;
2105                         break;
2106                 case FWTCODE_RREQQ:
2107                         xfer->send.buf = malloc(16, M_FW, M_WAITOK);
2108                         xfer->send.len = 16;
2109                         sfp = (struct fw_pkt *)xfer->send.buf;
2110                         sfp->mode.rresq.data = *(u_int32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2111                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2112                         sfp->mode.rresb.rtcode = 0;
2113                         break;
2114                 default:
2115                         fw_xfer_free( xfer);
2116                         return;
2117         }
2118         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2119         xfer->dst = ntohs(rfp->mode.hdr.src);
2120         xfer->act.hand = fw_xfer_free;
2121         xfer->retry_req = fw_asybusy;
2122
2123         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2124         sfp->mode.hdr.pri = 0;
2125
2126         fw_asyreq(xfer->fc, -1, xfer);
2127 /**/
2128         return;
2129 }
2130 #endif
2131
2132 /*
2133  * CRC16 check-sum for IEEE1394 register blocks.
2134  */
2135 u_int16_t
2136 fw_crc16(u_int32_t *ptr, u_int32_t len){
2137         u_int32_t i, sum, crc = 0;
2138         int shift;
2139         len = (len + 3) & ~3;
2140         for(i = 0 ; i < len ; i+= 4){
2141                 for( shift = 28 ; shift >= 0 ; shift -= 4){
2142                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2143                         crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2144                 }
2145                 crc &= 0xffff;
2146         }
2147         return((u_int16_t) crc);
2148 }
2149
2150 static int
2151 fw_bmr(struct firewire_comm *fc)
2152 {
2153         struct fw_device fwdev;
2154         union fw_self_id *self_id;
2155         int cmstr;
2156         u_int32_t quad;
2157
2158         /* Check to see if the current root node is cycle master capable */
2159         self_id = &fc->topology_map->self_id[fc->max_node];
2160         if (fc->max_node > 0) {
2161                 /* XXX check cmc bit of businfo block rather than contender */
2162                 if (self_id->p0.link_active && self_id->p0.contender)
2163                         cmstr = fc->max_node;
2164                 else {
2165                         device_printf(fc->bdev,
2166                                 "root node is not cycle master capable\n");
2167                         /* XXX shall we be the cycle master? */
2168                         cmstr = fc->nodeid;
2169                         /* XXX need bus reset */
2170                 }
2171         } else
2172                 cmstr = -1;
2173
2174         device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID));
2175         if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2176                 /* We are not the bus manager */
2177                 printf("\n");
2178                 return(0);
2179         }
2180         printf("(me)\n");
2181
2182         /* Optimize gapcount */
2183         if(fc->max_hop <= MAX_GAPHOP )
2184                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2185         /* If we are the cycle master, nothing to do */
2186         if (cmstr == fc->nodeid || cmstr == -1)
2187                 return 0;
2188         /* Bus probe has not finished, make dummy fwdev for cmstr */
2189         bzero(&fwdev, sizeof(fwdev));
2190         fwdev.fc = fc;
2191         fwdev.dst = cmstr;
2192         fwdev.speed = 0;
2193         fwdev.maxrec = 8; /* 512 */
2194         fwdev.status = FWDEVINIT;
2195         /* Set cmstr bit on the cycle master */
2196         quad = htonl(1 << 8);
2197         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2198                 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2199
2200         return 0;
2201 }
2202
2203 static int
2204 fw_modevent(module_t mode, int type, void *data)
2205 {
2206         int err = 0;
2207 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2208         static eventhandler_tag fwdev_ehtag = NULL;
2209 #endif
2210
2211         switch (type) {
2212         case MOD_LOAD:
2213 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2214                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2215                                                 fwdev_clone, 0, 1000);
2216 #endif
2217                 break;
2218         case MOD_UNLOAD:
2219 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2220                 if (fwdev_ehtag != NULL)
2221                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2222 #endif
2223                 break;
2224         case MOD_SHUTDOWN:
2225                 break;
2226         }
2227         return (err);
2228 }
2229
2230 DECLARE_DUMMY_MODULE(firewire);
2231 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0);
2232 MODULE_VERSION(firewire, 1);