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