sys/dev/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  * $FreeBSD$
  35  *
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/types.h>
  41
  42 #include <sys/jail.h>
  43 #include <sys/kernel.h>
  44 #include <sys/module.h>
  45 #include <sys/malloc.h>
  46 #include <sys/conf.h>
  47 #include <sys/sysctl.h>
  48 #include <sys/kthread.h>
  49
  50 #include <sys/kdb.h>
  51
  52 #if defined(__DragonFly__) || __FreeBSD_version < 500000
  53 #include <machine/clock.h>      /* for DELAY() */
  54 #endif
  55
  56 #include <sys/bus.h>            /* used by smbus and newbus */
  57 #include <machine/bus.h>
  58
  59 #ifdef __DragonFly__
  60 #include "firewire.h"
  61 #include "firewirereg.h"
  62 #include "fwmem.h"
  63 #include "iec13213.h"
  64 #include "iec68113.h"
  65 #else
  66 #include <dev/firewire/firewire.h>
  67 #include <dev/firewire/firewirereg.h>
  68 #include <dev/firewire/fwmem.h>
  69 #include <dev/firewire/iec13213.h>
  70 #include <dev/firewire/iec68113.h>
  71 #endif
  72
  73 struct crom_src_buf {
  74         struct crom_src src;
  75         struct crom_chunk root;
  76         struct crom_chunk vendor;
  77         struct crom_chunk hw;
  78 };
  79
  80 int firewire_debug=0, try_bmr=1, hold_count=0;
  81 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  82         "FireWire driver debug flag");
  83 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
  84 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  85         "Try to be a bus manager");
  86 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  87         "Number of count of bus resets for removing lost device information");
  88
  89 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  90 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  91
  92 #define FW_MAXASYRTY 4
  93
  94 devclass_t firewire_devclass;
  95
  96 static void firewire_identify   (driver_t *, device_t);
  97 static int firewire_probe       (device_t);
  98 static int firewire_attach      (device_t);
  99 static int firewire_detach      (device_t);
 100 static int firewire_resume      (device_t);
 101 static void firewire_xfer_timeout(void *, int);
 102 #if 0
 103 static int firewire_shutdown    (device_t);
 104 #endif
 105 static device_t firewire_add_child   (device_t, int, const char *, int);
 106 static void fw_try_bmr (void *);
 107 static void fw_try_bmr_callback (struct fw_xfer *);
 108 static void fw_asystart (struct fw_xfer *);
 109 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
 110 static void fw_bus_probe (struct firewire_comm *);
 111 static void fw_attach_dev (struct firewire_comm *);
 112 static void fw_bus_probe_thread(void *);
 113 #ifdef FW_VMACCESS
 114 static void fw_vmaccess (struct fw_xfer *);
 115 #endif
 116 static int fw_bmr (struct firewire_comm *);
 117 static void fw_dump_hdr(struct fw_pkt *, char *);
 118
 119 static device_method_t firewire_methods[] = {
 120         /* Device interface */
 121         DEVMETHOD(device_identify,      firewire_identify),
 122         DEVMETHOD(device_probe,         firewire_probe),
 123         DEVMETHOD(device_attach,        firewire_attach),
 124         DEVMETHOD(device_detach,        firewire_detach),
 125         DEVMETHOD(device_suspend,       bus_generic_suspend),
 126         DEVMETHOD(device_resume,        firewire_resume),
 127         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 128
 129         /* Bus interface */
 130         DEVMETHOD(bus_add_child,        firewire_add_child),
 131         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 132
 133         { 0, 0 }
 134 };
 135 char *linkspeed[] = {
 136         "S100", "S200", "S400", "S800",
 137         "S1600", "S3200", "undef", "undef"
 138 };
 139
 140 static char *tcode_str[] = {
 141         "WREQQ", "WREQB", "WRES",   "undef",
 142         "RREQQ", "RREQB", "RRESQ",  "RRESB",
 143         "CYCS",  "LREQ",  "STREAM", "LRES",
 144         "undef", "undef", "PHY",    "undef"
 145 };
 146
 147 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
 148 #define MAX_GAPHOP 15
 149 u_int gap_cnt[] = { 5,  5,  7,  8, 10, 13, 16, 18,
 150                    21, 24, 26, 29, 32, 35, 37, 40};
 151
 152 static driver_t firewire_driver = {
 153         "firewire",
 154         firewire_methods,
 155         sizeof(struct firewire_softc),
 156 };
 157
 158 /*
 159  * Lookup fwdev by node id.
 160  */
 161 struct fw_device *
 162 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
 163 {
 164         struct fw_device *fwdev;
 165         int s;
 166
 167         s = splfw();
 168         STAILQ_FOREACH(fwdev, &fc->devices, link)
 169                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 170                         break;
 171         splx(s);
 172
 173         return fwdev;
 174 }
 175
 176 /*
 177  * Lookup fwdev by EUI64.
 178  */
 179 struct fw_device *
 180 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
 181 {
 182         struct fw_device *fwdev;
 183         int s;
 184
 185         s = splfw();
 186         FW_GLOCK(fc);
 187         STAILQ_FOREACH(fwdev, &fc->devices, link)
 188                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 189                         break;
 190         FW_GUNLOCK(fc);
 191         splx(s);
 192
 193         if(fwdev == NULL) return NULL;
 194         if(fwdev->status == FWDEVINVAL) return NULL;
 195         return fwdev;
 196 }
 197
 198 /*
 199  * Async. request procedure for userland application.
 200  */
 201 int
 202 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
 203 {
 204         int err = 0;
 205         struct fw_xferq *xferq;
 206         int len;
 207         struct fw_pkt *fp;
 208         int tcode;
 209         struct tcode_info *info;
 210
 211         if(xfer == NULL) return EINVAL;
 212         if(xfer->hand == NULL){
 213                 printf("hand == NULL\n");
 214                 return EINVAL;
 215         }
 216         fp = &xfer->send.hdr;
 217
 218         tcode = fp->mode.common.tcode & 0xf;
 219         info = &fc->tcode[tcode];
 220         if (info->flag == 0) {
 221                 printf("invalid tcode=%x\n", tcode);
 222                 return EINVAL;
 223         }
 224
 225         /* XXX allow bus explore packets only after bus rest */
 226         if ((fc->status < FWBUSEXPLORE) &&
 227             ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
 228             (fp->mode.rreqq.dest_lo  < 0xf0000000) ||
 229             (fp->mode.rreqq.dest_lo >= 0xf0001000))) {
 230                 xfer->resp = EAGAIN;
 231                 xfer->flag = FWXF_BUSY;
 232                 return (EAGAIN);
 233         }
 234
 235         if (info->flag & FWTI_REQ)
 236                 xferq = fc->atq;
 237         else
 238                 xferq = fc->ats;
 239         len = info->hdr_len;
 240         if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
 241                 printf("send.pay_len > maxrec\n");
 242                 return EINVAL;
 243         }
 244         if (info->flag & FWTI_BLOCK_STR)
 245                 len = fp->mode.stream.len;
 246         else if (info->flag & FWTI_BLOCK_ASY)
 247                 len = fp->mode.rresb.len;
 248         else
 249                 len = 0;
 250         if (len != xfer->send.pay_len){
 251                 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
 252                     len, xfer->send.pay_len, tcode_str[tcode], tcode);
 253                 return EINVAL;
 254         }
 255
 256         if(xferq->start == NULL){
 257                 printf("xferq->start == NULL\n");
 258                 return EINVAL;
 259         }
 260         if(!(xferq->queued < xferq->maxq)){
 261                 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
 262                         xferq->queued);
 263                 return EAGAIN;
 264         }
 265
 266         xfer->tl = -1;
 267         if (info->flag & FWTI_TLABEL) {
 268                 if (fw_get_tlabel(fc, xfer) < 0)
 269                         return EAGAIN;
 270         }
 271
 272         xfer->resp = 0;
 273         xfer->fc = fc;
 274         xfer->q = xferq;
 275
 276         fw_asystart(xfer);
 277         return err;
 278 }
 279 /*
 280  * Wakeup blocked process.
 281  */
 282 void
 283 fw_xferwake(struct fw_xfer *xfer)
 284 {
 285         struct mtx *lock = &xfer->fc->wait_lock;
 286
 287         mtx_lock(lock);
 288         xfer->flag |= FWXF_WAKE;
 289         mtx_unlock(lock);
 290
 291         wakeup(xfer);
 292         return;
 293 }
 294
 295 int
 296 fw_xferwait(struct fw_xfer *xfer)
 297 {
 298         struct mtx *lock = &xfer->fc->wait_lock;
 299         int err = 0;
 300
 301         mtx_lock(lock);
 302         if ((xfer->flag & FWXF_WAKE) == 0)
 303                 err = msleep((void *)xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0);
 304         mtx_unlock(lock);
 305
 306         return (err);
 307 }
 308
 309 /*
 310  * Async. request with given xfer structure.
 311  */
 312 static void
 313 fw_asystart(struct fw_xfer *xfer)
 314 {
 315         struct firewire_comm *fc = xfer->fc;
 316         int s;
 317         s = splfw();
 318         /* Protect from interrupt/timeout */
 319         FW_GLOCK(fc);
 320         xfer->flag = FWXF_INQ;
 321         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 322 #if 0
 323         xfer->q->queued ++;
 324 #endif
 325         FW_GUNLOCK(fc);
 326         splx(s);
 327         /* XXX just queue for mbuf */
 328         if (xfer->mbuf == NULL)
 329                 xfer->q->start(fc);
 330         return;
 331 }
 332
 333 static void
 334 firewire_identify(driver_t *driver, device_t parent)
 335 {
 336         BUS_ADD_CHILD(parent, 0, "firewire", -1);
 337 }
 338
 339 static int
 340 firewire_probe(device_t dev)
 341 {
 342         device_set_desc(dev, "IEEE1394(FireWire) bus");
 343         return (0);
 344 }
 345
 346 static void
 347 firewire_xfer_timeout(void *arg, int pending)
 348 {
 349         struct firewire_comm *fc = (struct firewire_comm *)arg;
 350         struct fw_xfer *xfer, *txfer;
 351         struct timeval tv;
 352         struct timeval split_timeout;
 353         STAILQ_HEAD(, fw_xfer) xfer_timeout;
 354         int i, s;
 355
 356         split_timeout.tv_sec = 0;
 357         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 358
 359         microtime(&tv);
 360         timevalsub(&tv, &split_timeout);
 361         STAILQ_INIT(&xfer_timeout);
 362
 363         s = splfw();
 364         mtx_lock(&fc->tlabel_lock);
 365         for (i = 0; i < 0x40; i ++) {
 366                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 367                         if ((xfer->flag & FWXF_SENT) == 0)
 368                                 /* not sent yet */
 369                                 break;
 370                         if (timevalcmp(&xfer->tv, &tv, >))
 371                                 /* the rests are newer than this */
 372                                 break;
 373                         device_printf(fc->bdev,
 374                                 "split transaction timeout: "
 375                                 "tl=0x%x flag=0x%02x\n", i, xfer->flag);
 376                         fw_dump_hdr(&xfer->send.hdr, "send");
 377                         xfer->resp = ETIMEDOUT;
 378                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 379                         STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
 380                 }
 381         }
 382         mtx_unlock(&fc->tlabel_lock);
 383         splx(s);
 384         fc->timeout(fc);
 385
 386         STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer)
 387                 xfer->hand(xfer);
 388 }
 389
 390 #define WATCHDOG_HZ 10
 391 static void
 392 firewire_watchdog(void *arg)
 393 {
 394         struct firewire_comm *fc;
 395         static int watchdog_clock = 0;
 396
 397         fc = (struct firewire_comm *)arg;
 398
 399         /*
 400          * At boot stage, the device interrupt is disabled and
 401          * We encounter a timeout easily. To avoid this,
 402          * ignore clock interrupt for a while.
 403          */
 404         if (watchdog_clock > WATCHDOG_HZ * 15)
 405                 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout);
 406         else
 407                 watchdog_clock ++;
 408
 409         callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ,
 410                         (void *)firewire_watchdog, (void *)fc);
 411 }
 412
 413 /*
 414  * The attach routine.
 415  */
 416 static int
 417 firewire_attach(device_t dev)
 418 {
 419         int unit;
 420         struct firewire_softc *sc = device_get_softc(dev);
 421         device_t pa = device_get_parent(dev);
 422         struct firewire_comm *fc;
 423
 424         fc = (struct firewire_comm *)device_get_softc(pa);
 425         sc->fc = fc;
 426         fc->status = FWBUSNOTREADY;
 427
 428         unit = device_get_unit(dev);
 429         if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
 430
 431         fwdev_makedev(sc);
 432
 433         fc->crom_src_buf = (struct crom_src_buf *)malloc(
 434                                 sizeof(struct crom_src_buf),
 435                                 M_FW, M_NOWAIT | M_ZERO);
 436         if (fc->crom_src_buf == NULL) {
 437                 device_printf(fc->dev, "%s: Malloc Failure crom src buff\n", __func__);
 438                 return ENOMEM;
 439         }
 440         fc->topology_map = (struct fw_topology_map *)malloc(
 441                                 sizeof(struct fw_topology_map),
 442                                 M_FW, M_NOWAIT | M_ZERO);
 443         if (fc->topology_map == NULL) {
 444                 device_printf(fc->dev, "%s: Malloc Failure topology map\n", __func__);
 445                 free(fc->crom_src_buf, M_FW);
 446                 return ENOMEM;
 447         }
 448         fc->speed_map = (struct fw_speed_map *)malloc(
 449                                 sizeof(struct fw_speed_map),
 450                                 M_FW, M_NOWAIT | M_ZERO);
 451         if (fc->speed_map == NULL) {
 452                 device_printf(fc->dev, "%s: Malloc Failure speed map\n", __func__);
 453                 free(fc->crom_src_buf, M_FW);
 454                 free(fc->topology_map, M_FW);
 455                 return ENOMEM;
 456         }
 457
 458         mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF);
 459         mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF);
 460         CALLOUT_INIT(&fc->timeout_callout);
 461         CALLOUT_INIT(&fc->bmr_callout);
 462         CALLOUT_INIT(&fc->busprobe_callout);
 463         TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, (void *)fc);
 464
 465         callout_reset(&sc->fc->timeout_callout, hz,
 466                         (void *)firewire_watchdog, (void *)sc->fc);
 467
 468         /* create thread */
 469         kproc_create(fw_bus_probe_thread, (void *)fc, &fc->probe_thread,
 470                 0, 0, "fw%d_probe", unit);
 471
 472         /* Locate our children */
 473         bus_generic_probe(dev);
 474
 475         /* launch attachement of the added children */
 476         bus_generic_attach(dev);
 477
 478         /* bus_reset */
 479         FW_GLOCK(fc);
 480         fw_busreset(fc, FWBUSNOTREADY);
 481         FW_GUNLOCK(fc);
 482         fc->ibr(fc);
 483
 484         return 0;
 485 }
 486
 487 /*
 488  * Attach it as child.
 489  */
 490 static device_t
 491 firewire_add_child(device_t dev, int order, const char *name, int unit)
 492 {
 493         device_t child;
 494         struct firewire_softc *sc;
 495
 496         sc = (struct firewire_softc *)device_get_softc(dev);
 497         child = device_add_child(dev, name, unit);
 498         if (child) {
 499                 device_set_ivars(child, sc->fc);
 500                 device_probe_and_attach(child);
 501         }
 502
 503         return child;
 504 }
 505
 506 static int
 507 firewire_resume(device_t dev)
 508 {
 509         struct firewire_softc *sc;
 510
 511         sc = (struct firewire_softc *)device_get_softc(dev);
 512         sc->fc->status = FWBUSNOTREADY;
 513
 514         bus_generic_resume(dev);
 515
 516         return(0);
 517 }
 518
 519 /*
 520  * Dettach it.
 521  */
 522 static int
 523 firewire_detach(device_t dev)
 524 {
 525         struct firewire_softc *sc;
 526         struct firewire_comm *fc;
 527         struct fw_device *fwdev, *fwdev_next;
 528         int err;
 529
 530         sc = (struct firewire_softc *)device_get_softc(dev);
 531         fc = sc->fc;
 532         mtx_lock(&fc->wait_lock);
 533         fc->status = FWBUSDETACH;
 534         wakeup(fc);
 535         if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60))
 536                 printf("firewire probe thread didn't die\n");
 537         mtx_unlock(&fc->wait_lock);
 538
 539         if (fc->arq !=0 && fc->arq->maxq > 0)
 540                 fw_drain_txq(fc);
 541
 542         if ((err = fwdev_destroydev(sc)) != 0)
 543                 return err;
 544
 545         if ((err = bus_generic_detach(dev)) != 0)
 546                 return err;
 547
 548         callout_stop(&fc->timeout_callout);
 549         callout_stop(&fc->bmr_callout);
 550         callout_stop(&fc->busprobe_callout);
 551
 552         /* XXX xfer_free and untimeout on all xfers */
 553         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
 554                                                         fwdev = fwdev_next) {
 555                 fwdev_next = STAILQ_NEXT(fwdev, link);
 556                 free(fwdev, M_FW);
 557         }
 558         free(fc->topology_map, M_FW);
 559         free(fc->speed_map, M_FW);
 560         free(fc->crom_src_buf, M_FW);
 561
 562         mtx_destroy(&fc->tlabel_lock);
 563         mtx_destroy(&fc->wait_lock);
 564         return(0);
 565 }
 566 #if 0
 567 static int
 568 firewire_shutdown( device_t dev )
 569 {
 570         return 0;
 571 }
 572 #endif
 573
 574
 575 static void
 576 fw_xferq_drain(struct fw_xferq *xferq)
 577 {
 578         struct fw_xfer *xfer;
 579
 580         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 581                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 582 #if 0
 583                 xferq->queued --;
 584 #endif
 585                 xfer->resp = EAGAIN;
 586                 xfer->flag = FWXF_SENTERR;
 587                 fw_xfer_done(xfer);
 588         }
 589 }
 590
 591 void
 592 fw_drain_txq(struct firewire_comm *fc)
 593 {
 594         struct fw_xfer *xfer, *txfer;
 595         STAILQ_HEAD(, fw_xfer) xfer_drain;
 596         int i;
 597
 598         STAILQ_INIT(&xfer_drain);
 599
 600         FW_GLOCK(fc);
 601         fw_xferq_drain(fc->atq);
 602         fw_xferq_drain(fc->ats);
 603         for(i = 0; i < fc->nisodma; i++)
 604                 fw_xferq_drain(fc->it[i]);
 605         FW_GUNLOCK(fc);
 606
 607         mtx_lock(&fc->tlabel_lock);
 608         for (i = 0; i < 0x40; i ++)
 609                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 610                         if (firewire_debug)
 611                                 printf("tl=%d flag=%d\n", i, xfer->flag);
 612                         xfer->resp = EAGAIN;
 613                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 614                         STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
 615                 }
 616         mtx_unlock(&fc->tlabel_lock);
 617
 618         STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer)
 619                 xfer->hand(xfer);
 620 }
 621
 622 static void
 623 fw_reset_csr(struct firewire_comm *fc)
 624 {
 625         int i;
 626
 627         CSRARC(fc, STATE_CLEAR)
 628                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 629         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 630         CSRARC(fc, NODE_IDS) = 0x3f;
 631
 632         CSRARC(fc, TOPO_MAP + 8) = 0;
 633         fc->irm = -1;
 634
 635         fc->max_node = -1;
 636
 637         for(i = 2; i < 0x100/4 - 2 ; i++){
 638                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 639         }
 640         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 641         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 642         CSRARC(fc, RESET_START) = 0;
 643         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 644         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 645         CSRARC(fc, CYCLE_TIME) = 0x0;
 646         CSRARC(fc, BUS_TIME) = 0x0;
 647         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 648         CSRARC(fc, BANDWIDTH_AV) = 4915;
 649         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 650         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 651         CSRARC(fc, IP_CHANNELS) = (1 << 31);
 652
 653         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 654         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 655         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 656                                 1 << 28 | 0xff << 16 | 0x09 << 8;
 657         CSRARC(fc, CONF_ROM + 0xc) = 0;
 658
 659 /* DV depend CSRs see blue book */
 660         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 661         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 662
 663         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
 664         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 665 }
 666
 667 static void
 668 fw_init_crom(struct firewire_comm *fc)
 669 {
 670         struct crom_src *src;
 671
 672         src = &fc->crom_src_buf->src;
 673         bzero(src, sizeof(struct crom_src));
 674
 675         /* BUS info sample */
 676         src->hdr.info_len = 4;
 677
 678         src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 679
 680         src->businfo.irmc = 1;
 681         src->businfo.cmc = 1;
 682         src->businfo.isc = 1;
 683         src->businfo.bmc = 1;
 684         src->businfo.pmc = 0;
 685         src->businfo.cyc_clk_acc = 100;
 686         src->businfo.max_rec = fc->maxrec;
 687         src->businfo.max_rom = MAXROM_4;
 688 #define FW_GENERATION_CHANGEABLE 2
 689         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 690         src->businfo.link_spd = fc->speed;
 691
 692         src->businfo.eui64.hi = fc->eui.hi;
 693         src->businfo.eui64.lo = fc->eui.lo;
 694
 695         STAILQ_INIT(&src->chunk_list);
 696
 697         fc->crom_src = src;
 698         fc->crom_root = &fc->crom_src_buf->root;
 699 }
 700
 701 static void
 702 fw_reset_crom(struct firewire_comm *fc)
 703 {
 704         struct crom_src_buf *buf;
 705         struct crom_src *src;
 706         struct crom_chunk *root;
 707
 708         buf =  fc->crom_src_buf;
 709         src = fc->crom_src;
 710         root = fc->crom_root;
 711
 712         STAILQ_INIT(&src->chunk_list);
 713
 714         bzero(root, sizeof(struct crom_chunk));
 715         crom_add_chunk(src, NULL, root, 0);
 716         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 717         /* private company_id */
 718         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 719 #ifdef __DragonFly__
 720         crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
 721         crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
 722 #else
 723         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 724         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 725 #endif
 726         mtx_lock(&prison0.pr_mtx);
 727         crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname);
 728         mtx_unlock(&prison0.pr_mtx);
 729 }
 730
 731 /*
 732  * Called after bus reset.
 733  */
 734 void
 735 fw_busreset(struct firewire_comm *fc, uint32_t new_status)
 736 {
 737         struct firewire_dev_comm *fdc;
 738         struct crom_src *src;
 739         device_t *devlistp;
 740         uint32_t *newrom;
 741         int i, devcnt;
 742
 743         FW_GLOCK_ASSERT(fc);
 744         if (fc->status == FWBUSMGRELECT)
 745                 callout_stop(&fc->bmr_callout);
 746
 747         fc->status = new_status;
 748         fw_reset_csr(fc);
 749
 750         if (fc->status == FWBUSNOTREADY)
 751                 fw_init_crom(fc);
 752
 753         fw_reset_crom(fc);
 754
 755         if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
 756                 for( i = 0 ; i < devcnt ; i++)
 757                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
 758                                 fdc = device_get_softc(devlistp[i]);
 759                                 if (fdc->post_busreset != NULL)
 760                                         fdc->post_busreset(fdc);
 761                         }
 762                 free(devlistp, M_TEMP);
 763         }
 764
 765         src = &fc->crom_src_buf->src;
 766         /*
 767          * If the old config rom needs to be overwritten,
 768          * bump the businfo.generation indicator to
 769          * indicate that we need to be reprobed
 770          * See 1394a-2000 8.3.2.5.4 for more details.
 771          * generation starts at 2 and rolls over at 0xF
 772          * back to 2.
 773          *
 774          * A generation of 0 indicates a device
 775          * that is not 1394a-2000 compliant.
 776          * A generation of 1 indicates a device that
 777          * does not change it's Bus Info Block or
 778          * Configuration ROM.
 779          */
 780 #define FW_MAX_GENERATION 0xF
 781         newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
 782         src = &fc->crom_src_buf->src;
 783         crom_load(src, newrom, CROMSIZE);
 784         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 785                 if ( src->businfo.generation++ > FW_MAX_GENERATION )
 786                         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 787                 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
 788         }
 789         free(newrom, M_FW);
 790
 791 }
 792
 793 /* Call once after reboot */
 794 void fw_init(struct firewire_comm *fc)
 795 {
 796         int i;
 797 #ifdef FW_VMACCESS
 798         struct fw_xfer *xfer;
 799         struct fw_bind *fwb;
 800 #endif
 801
 802         fc->arq->queued = 0;
 803         fc->ars->queued = 0;
 804         fc->atq->queued = 0;
 805         fc->ats->queued = 0;
 806
 807         fc->arq->buf = NULL;
 808         fc->ars->buf = NULL;
 809         fc->atq->buf = NULL;
 810         fc->ats->buf = NULL;
 811
 812         fc->arq->flag = 0;
 813         fc->ars->flag = 0;
 814         fc->atq->flag = 0;
 815         fc->ats->flag = 0;
 816
 817         STAILQ_INIT(&fc->atq->q);
 818         STAILQ_INIT(&fc->ats->q);
 819
 820         for( i = 0 ; i < fc->nisodma ; i ++ ){
 821                 fc->it[i]->queued = 0;
 822                 fc->ir[i]->queued = 0;
 823
 824                 fc->it[i]->start = NULL;
 825                 fc->ir[i]->start = NULL;
 826
 827                 fc->it[i]->buf = NULL;
 828                 fc->ir[i]->buf = NULL;
 829
 830                 fc->it[i]->flag = FWXFERQ_STREAM;
 831                 fc->ir[i]->flag = FWXFERQ_STREAM;
 832
 833                 STAILQ_INIT(&fc->it[i]->q);
 834                 STAILQ_INIT(&fc->ir[i]->q);
 835         }
 836
 837         fc->arq->maxq = FWMAXQUEUE;
 838         fc->ars->maxq = FWMAXQUEUE;
 839         fc->atq->maxq = FWMAXQUEUE;
 840         fc->ats->maxq = FWMAXQUEUE;
 841
 842         for( i = 0 ; i < fc->nisodma ; i++){
 843                 fc->ir[i]->maxq = FWMAXQUEUE;
 844                 fc->it[i]->maxq = FWMAXQUEUE;
 845         }
 846
 847         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 848         CSRARC(fc, TOPO_MAP + 4) = 1;
 849         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 850         CSRARC(fc, SPED_MAP + 4) = 1;
 851
 852         STAILQ_INIT(&fc->devices);
 853
 854 /* Initialize Async handlers */
 855         STAILQ_INIT(&fc->binds);
 856         for( i = 0 ; i < 0x40 ; i++){
 857                 STAILQ_INIT(&fc->tlabels[i]);
 858         }
 859
 860 /* DV depend CSRs see blue book */
 861 #if 0
 862         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 863         CSRARC(fc, oPCR) = 0x8000007a;
 864         for(i = 4 ; i < 0x7c/4 ; i+=4){
 865                 CSRARC(fc, i + oPCR) = 0x8000007a;
 866         }
 867
 868         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 869         CSRARC(fc, iPCR) = 0x803f0000;
 870         for(i = 4 ; i < 0x7c/4 ; i+=4){
 871                 CSRARC(fc, i + iPCR) = 0x0;
 872         }
 873 #endif
 874
 875         fc->crom_src_buf = NULL;
 876
 877 #ifdef FW_VMACCESS
 878         xfer = fw_xfer_alloc();
 879         if(xfer == NULL) return;
 880
 881         fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT);
 882         if(fwb == NULL){
 883                 fw_xfer_free(xfer);
 884                 return;
 885         }
 886         xfer->hand = fw_vmaccess;
 887         xfer->fc = fc;
 888         xfer->sc = NULL;
 889
 890         fwb->start_hi = 0x2;
 891         fwb->start_lo = 0;
 892         fwb->addrlen = 0xffffffff;
 893         fwb->xfer = xfer;
 894         fw_bindadd(fc, fwb);
 895 #endif
 896 }
 897
 898 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
 899     ((fwb)->end < (addr))?1:0)
 900
 901 /*
 902  * To lookup bound process from IEEE1394 address.
 903  */
 904 struct fw_bind *
 905 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
 906 {
 907         u_int64_t addr;
 908         struct fw_bind *tfw, *r = NULL;
 909
 910         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 911         FW_GLOCK(fc);
 912         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 913                 if (BIND_CMP(addr, tfw) == 0) {
 914                         r = tfw;
 915                         break;
 916                 }
 917         FW_GUNLOCK(fc);
 918         return(r);
 919 }
 920
 921 /*
 922  * To bind IEEE1394 address block to process.
 923  */
 924 int
 925 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 926 {
 927         struct fw_bind *tfw, *prev = NULL;
 928         int r = 0;
 929
 930         if (fwb->start > fwb->end) {
 931                 printf("%s: invalid range\n", __func__);
 932                 return EINVAL;
 933         }
 934
 935         FW_GLOCK(fc);
 936         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 937                 if (fwb->end < tfw->start)
 938                         break;
 939                 prev = tfw;
 940         }
 941         if (prev == NULL)
 942                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 943         else if (prev->end < fwb->start)
 944                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 945         else {
 946                 printf("%s: bind failed\n", __func__);
 947                 r = EBUSY;
 948         }
 949         FW_GUNLOCK(fc);
 950         return (r);
 951 }
 952
 953 /*
 954  * To free IEEE1394 address block.
 955  */
 956 int
 957 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 958 {
 959 #if 0
 960         struct fw_xfer *xfer, *next;
 961 #endif
 962         struct fw_bind *tfw;
 963         int s;
 964
 965         s = splfw();
 966         FW_GLOCK(fc);
 967         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 968                 if (tfw == fwb) {
 969                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 970                         goto found;
 971                 }
 972
 973         printf("%s: no such binding\n", __func__);
 974         FW_GUNLOCK(fc);
 975         splx(s);
 976         return (1);
 977 found:
 978 #if 0
 979         /* shall we do this? */
 980         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 981                 next = STAILQ_NEXT(xfer, link);
 982                 fw_xfer_free(xfer);
 983         }
 984         STAILQ_INIT(&fwb->xferlist);
 985 #endif
 986         FW_GUNLOCK(fc);
 987
 988         splx(s);
 989         return 0;
 990 }
 991
 992 int
 993 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
 994     int slen, int rlen, int n,
 995     struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
 996 {
 997         int i, s;
 998         struct fw_xfer *xfer;
 999
1000         for (i = 0; i < n; i++) {
1001                 xfer = fw_xfer_alloc_buf(type, slen, rlen);
1002                 if (xfer == NULL)
1003                         return (n);
1004                 xfer->fc = fc;
1005                 xfer->sc = sc;
1006                 xfer->hand = hand;
1007                 s = splfw();
1008                 STAILQ_INSERT_TAIL(q, xfer, link);
1009                 splx(s);
1010         }
1011         return (n);
1012 }
1013
1014 void
1015 fw_xferlist_remove(struct fw_xferlist *q)
1016 {
1017         struct fw_xfer *xfer, *next;
1018
1019         for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
1020                 next = STAILQ_NEXT(xfer, link);
1021                 fw_xfer_free_buf(xfer);
1022         }
1023         STAILQ_INIT(q);
1024 }
1025 /*
1026  * dump packet header
1027  */
1028 static void
1029 fw_dump_hdr(struct fw_pkt *fp, char *prefix)
1030 {
1031         printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
1032             "src=0x%03x\n", prefix,
1033             fp->mode.hdr.dst & 0x3f,
1034             fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
1035             fp->mode.hdr.tcode, fp->mode.hdr.pri,
1036             fp->mode.hdr.src);
1037 }
1038
1039 /*
1040  * To free transaction label.
1041  */
1042 static void
1043 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
1044 {
1045         struct fw_xfer *txfer;
1046         int s;
1047
1048         if (xfer->tl < 0)
1049                 return;
1050
1051         s = splfw();
1052         mtx_lock(&fc->tlabel_lock);
1053 #if 1   /* make sure the label is allocated */
1054         STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
1055                 if(txfer == xfer)
1056                         break;
1057         if (txfer == NULL) {
1058                 printf("%s: the xfer is not in the queue "
1059                     "(tlabel=%d, flag=0x%x)\n",
1060                     __FUNCTION__, xfer->tl, xfer->flag);
1061                 fw_dump_hdr(&xfer->send.hdr, "send");
1062                 fw_dump_hdr(&xfer->recv.hdr, "recv");
1063                 kdb_backtrace();
1064                 mtx_unlock(&fc->tlabel_lock);
1065                 splx(s);
1066                 return;
1067         }
1068 #endif
1069
1070         STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
1071         mtx_unlock(&fc->tlabel_lock);
1072         splx(s);
1073         return;
1074 }
1075
1076 /*
1077  * To obtain XFER structure by transaction label.
1078  */
1079 static struct fw_xfer *
1080 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
1081 {
1082         struct fw_xfer *xfer;
1083         int s = splfw();
1084         int req;
1085
1086         mtx_lock(&fc->tlabel_lock);
1087         STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
1088                 if(xfer->send.hdr.mode.hdr.dst == node) {
1089                         mtx_unlock(&fc->tlabel_lock);
1090                         splx(s);
1091                         KASSERT(xfer->tl == tlabel,
1092                                 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel));
1093                         /* extra sanity check */
1094                         req = xfer->send.hdr.mode.hdr.tcode;
1095                         if (xfer->fc->tcode[req].valid_res != tcode) {
1096                                 printf("%s: invalid response tcode "
1097                                     "(0x%x for 0x%x)\n", __FUNCTION__,
1098                                     tcode, req);
1099                                 return(NULL);
1100                         }
1101
1102                         if (firewire_debug > 2)
1103                                 printf("fw_tl2xfer: found tl=%d\n", tlabel);
1104                         return(xfer);
1105                 }
1106         mtx_unlock(&fc->tlabel_lock);
1107         if (firewire_debug > 1)
1108                 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
1109         splx(s);
1110         return(NULL);
1111 }
1112
1113 /*
1114  * To allocate IEEE1394 XFER structure.
1115  */
1116 struct fw_xfer *
1117 fw_xfer_alloc(struct malloc_type *type)
1118 {
1119         struct fw_xfer *xfer;
1120
1121         xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
1122         if (xfer == NULL)
1123                 return xfer;
1124
1125         xfer->malloc = type;
1126
1127         return xfer;
1128 }
1129
1130 struct fw_xfer *
1131 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
1132 {
1133         struct fw_xfer *xfer;
1134
1135         xfer = fw_xfer_alloc(type);
1136         if (xfer == NULL)
1137                 return(NULL);
1138         xfer->send.pay_len = send_len;
1139         xfer->recv.pay_len = recv_len;
1140         if (send_len > 0) {
1141                 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
1142                 if (xfer->send.payload == NULL) {
1143                         fw_xfer_free(xfer);
1144                         return(NULL);
1145                 }
1146         }
1147         if (recv_len > 0) {
1148                 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1149                 if (xfer->recv.payload == NULL) {
1150                         if (xfer->send.payload != NULL)
1151                                 free(xfer->send.payload, type);
1152                         fw_xfer_free(xfer);
1153                         return(NULL);
1154                 }
1155         }
1156         return(xfer);
1157 }
1158
1159 /*
1160  * IEEE1394 XFER post process.
1161  */
1162 void
1163 fw_xfer_done(struct fw_xfer *xfer)
1164 {
1165         if (xfer->hand == NULL) {
1166                 printf("hand == NULL\n");
1167                 return;
1168         }
1169
1170         if (xfer->fc == NULL)
1171                 panic("fw_xfer_done: why xfer->fc is NULL?");
1172
1173         fw_tl_free(xfer->fc, xfer);
1174         xfer->hand(xfer);
1175 }
1176
1177 void
1178 fw_xfer_unload(struct fw_xfer* xfer)
1179 {
1180         int s;
1181
1182         if(xfer == NULL ) return;
1183         if(xfer->flag & FWXF_INQ){
1184                 printf("fw_xfer_free FWXF_INQ\n");
1185                 s = splfw();
1186                 FW_GLOCK(xfer->fc);
1187                 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1188 #if 0
1189                 xfer->q->queued --;
1190 #endif
1191                 FW_GUNLOCK(xfer->fc);
1192                 splx(s);
1193         }
1194         if (xfer->fc != NULL) {
1195 #if 1
1196                 if(xfer->flag & FWXF_START)
1197                         /*
1198                          * This could happen if:
1199                          *  1. We call fwohci_arcv() before fwohci_txd().
1200                          *  2. firewire_watch() is called.
1201                          */
1202                         printf("fw_xfer_free FWXF_START\n");
1203 #endif
1204         }
1205         xfer->flag = FWXF_INIT;
1206         xfer->resp = 0;
1207 }
1208 /*
1209  * To free IEEE1394 XFER structure.
1210  */
1211 void
1212 fw_xfer_free_buf( struct fw_xfer* xfer)
1213 {
1214         if (xfer == NULL) {
1215                 printf("%s: xfer == NULL\n", __func__);
1216                 return;
1217         }
1218         fw_xfer_unload(xfer);
1219         if(xfer->send.payload != NULL){
1220                 free(xfer->send.payload, xfer->malloc);
1221         }
1222         if(xfer->recv.payload != NULL){
1223                 free(xfer->recv.payload, xfer->malloc);
1224         }
1225         free(xfer, xfer->malloc);
1226 }
1227
1228 void
1229 fw_xfer_free( struct fw_xfer* xfer)
1230 {
1231         if (xfer == NULL) {
1232                 printf("%s: xfer == NULL\n", __func__);
1233                 return;
1234         }
1235         fw_xfer_unload(xfer);
1236         free(xfer, xfer->malloc);
1237 }
1238
1239 void
1240 fw_asy_callback_free(struct fw_xfer *xfer)
1241 {
1242 #if 0
1243         printf("asyreq done flag=0x%02x resp=%d\n",
1244                                 xfer->flag, xfer->resp);
1245 #endif
1246         fw_xfer_free(xfer);
1247 }
1248
1249 /*
1250  * To configure PHY.
1251  */
1252 static void
1253 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1254 {
1255         struct fw_xfer *xfer;
1256         struct fw_pkt *fp;
1257
1258         fc->status = FWBUSPHYCONF;
1259
1260         xfer = fw_xfer_alloc(M_FWXFER);
1261         if (xfer == NULL)
1262                 return;
1263         xfer->fc = fc;
1264         xfer->hand = fw_asy_callback_free;
1265
1266         fp = &xfer->send.hdr;
1267         fp->mode.ld[1] = 0;
1268         if (root_node >= 0)
1269                 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1270         if (gap_count >= 0)
1271                 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1272         fp->mode.ld[2] = ~fp->mode.ld[1];
1273 /* XXX Dangerous, how to pass PHY packet to device driver */
1274         fp->mode.common.tcode |= FWTCODE_PHY;
1275
1276         if (firewire_debug)
1277                 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n",
1278                                         __func__, root_node, gap_count);
1279         fw_asyreq(fc, -1, xfer);
1280 }
1281
1282 /*
1283  * Dump self ID.
1284  */
1285 static void
1286 fw_print_sid(uint32_t sid)
1287 {
1288         union fw_self_id *s;
1289         s = (union fw_self_id *) &sid;
1290         if ( s->p0.sequel ) {
1291                 if ( s->p1.sequence_num == FW_SELF_ID_PAGE0 ) {
1292                         printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d"
1293                                 "p8:%d p9:%d p10:%d\n",
1294                                 s->p1.phy_id, s->p1.port3, s->p1.port4,
1295                                 s->p1.port5, s->p1.port6, s->p1.port7,
1296                                 s->p1.port8, s->p1.port9, s->p1.port10);
1297                 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1 ){
1298                         printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n",
1299                                 s->p2.phy_id, s->p2.port11, s->p2.port12,
1300                                 s->p2.port13, s->p2.port14, s->p2.port15);
1301                 } else {
1302                         printf("node:%d Unknown Self ID Page number %d\n",
1303                                 s->p1.phy_id, s->p1.sequence_num);
1304                 }
1305         } else {
1306                 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d"
1307                         " p0:%d p1:%d p2:%d i:%d m:%d\n",
1308                         s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1309                         s->p0.phy_speed, s->p0.contender,
1310                         s->p0.power_class, s->p0.port0, s->p0.port1,
1311                         s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1312         }
1313 }
1314
1315 /*
1316  * To receive self ID.
1317  */
1318 void fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len)
1319 {
1320         uint32_t *p;
1321         union fw_self_id *self_id;
1322         u_int i, j, node, c_port = 0, i_branch = 0;
1323
1324         fc->sid_cnt = len /(sizeof(uint32_t) * 2);
1325         fc->max_node = fc->nodeid & 0x3f;
1326         CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
1327         fc->status = FWBUSCYMELECT;
1328         fc->topology_map->crc_len = 2;
1329         fc->topology_map->generation ++;
1330         fc->topology_map->self_id_count = 0;
1331         fc->topology_map->node_count = 0;
1332         fc->speed_map->generation ++;
1333         fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1334         self_id = &fc->topology_map->self_id[0];
1335         for(i = 0; i < fc->sid_cnt; i ++){
1336                 if (sid[1] != ~sid[0]) {
1337                         device_printf(fc->bdev, "%s: ERROR invalid self-id packet\n",
1338                                                 __func__);
1339                         sid += 2;
1340                         continue;
1341                 }
1342                 *self_id = *((union fw_self_id *)sid);
1343                 fc->topology_map->crc_len++;
1344                 if(self_id->p0.sequel == 0){
1345                         fc->topology_map->node_count ++;
1346                         c_port = 0;
1347                         if (firewire_debug)
1348                                 fw_print_sid(sid[0]);
1349                         node = self_id->p0.phy_id;
1350                         if(fc->max_node < node){
1351                                 fc->max_node = self_id->p0.phy_id;
1352                         }
1353                         /* XXX I'm not sure this is the right speed_map */
1354                         fc->speed_map->speed[node][node]
1355                                         = self_id->p0.phy_speed;
1356                         for (j = 0; j < node; j ++) {
1357                                 fc->speed_map->speed[j][node]
1358                                         = fc->speed_map->speed[node][j]
1359                                         = min(fc->speed_map->speed[j][j],
1360                                                         self_id->p0.phy_speed);
1361                         }
1362                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1363                           (self_id->p0.link_active && self_id->p0.contender)) {
1364                                 fc->irm = self_id->p0.phy_id;
1365                         }
1366                         if(self_id->p0.port0 >= 0x2){
1367                                 c_port++;
1368                         }
1369                         if(self_id->p0.port1 >= 0x2){
1370                                 c_port++;
1371                         }
1372                         if(self_id->p0.port2 >= 0x2){
1373                                 c_port++;
1374                         }
1375                 }
1376                 if(c_port > 2){
1377                         i_branch += (c_port - 2);
1378                 }
1379                 sid += 2;
1380                 self_id++;
1381                 fc->topology_map->self_id_count ++;
1382         }
1383         /* CRC */
1384         fc->topology_map->crc = fw_crc16(
1385                         (uint32_t *)&fc->topology_map->generation,
1386                         fc->topology_map->crc_len * 4);
1387         fc->speed_map->crc = fw_crc16(
1388                         (uint32_t *)&fc->speed_map->generation,
1389                         fc->speed_map->crc_len * 4);
1390         /* byteswap and copy to CSR */
1391         p = (uint32_t *)fc->topology_map;
1392         for (i = 0; i <= fc->topology_map->crc_len; i++)
1393                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1394         p = (uint32_t *)fc->speed_map;
1395         CSRARC(fc, SPED_MAP) = htonl(*p++);
1396         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1397         /* don't byte-swap uint8_t array */
1398         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1399
1400         fc->max_hop = fc->max_node - i_branch;
1401         device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n",
1402                         fc->max_node + 1, fc->max_hop,
1403                         (fc->irm == -1) ? "Not IRM capable" : "cable IRM",
1404                         fc->irm,
1405                         (fc->irm == fc->nodeid) ? " (me) " : "");
1406
1407         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1408                 if (fc->irm == fc->nodeid) {
1409                         fc->status = FWBUSMGRDONE;
1410                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1411                         fw_bmr(fc);
1412                 } else {
1413                         fc->status = FWBUSMGRELECT;
1414                         callout_reset(&fc->bmr_callout, hz/8,
1415                                 (void *)fw_try_bmr, (void *)fc);
1416                 }
1417         } else
1418                 fc->status = FWBUSMGRDONE;
1419
1420         callout_reset(&fc->busprobe_callout, hz/4,
1421                         (void *)fw_bus_probe, (void *)fc);
1422 }
1423
1424 /*
1425  * To probe devices on the IEEE1394 bus.
1426  */
1427 static void
1428 fw_bus_probe(struct firewire_comm *fc)
1429 {
1430         int s;
1431         struct fw_device *fwdev;
1432
1433         s = splfw();
1434         fc->status = FWBUSEXPLORE;
1435
1436         /* Invalidate all devices, just after bus reset. */
1437         if (firewire_debug)
1438                 device_printf(fc->bdev, "%s:"
1439                         "iterate and invalidate all nodes\n",
1440                         __func__);
1441         STAILQ_FOREACH(fwdev, &fc->devices, link)
1442                 if (fwdev->status != FWDEVINVAL) {
1443                         fwdev->status = FWDEVINVAL;
1444                         fwdev->rcnt = 0;
1445                         if (firewire_debug)
1446                                 device_printf(fc->bdev, "%s:"
1447                                         "Invalidate Dev ID: %08x%08x\n",
1448                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1449                 } else {
1450                         if (firewire_debug)
1451                                 device_printf(fc->bdev, "%s:"
1452                                         "Dev ID: %08x%08x already invalid\n",
1453                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1454                 }
1455         splx(s);
1456
1457         wakeup((void *)fc);
1458 }
1459
1460 static int
1461 fw_explore_read_quads(struct fw_device *fwdev, int offset,
1462     uint32_t *quad, int length)
1463 {
1464         struct fw_xfer *xfer;
1465         uint32_t tmp;
1466         int i, error;
1467
1468         for (i = 0; i < length; i ++, offset += sizeof(uint32_t)) {
1469                 xfer = fwmem_read_quad(fwdev, NULL, -1,
1470                     0xffff, 0xf0000000 | offset, (void *)&tmp,
1471                     fw_xferwake);
1472                 if (xfer == NULL)
1473                         return (-1);
1474                 fw_xferwait(xfer);
1475
1476                 if (xfer->resp == 0)
1477                         quad[i] = ntohl(tmp);
1478
1479                 error = xfer->resp;
1480                 fw_xfer_free(xfer);
1481                 if (error)
1482                         return (error);
1483         }
1484         return (0);
1485 }
1486
1487
1488 static int
1489 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1490 {
1491         int err, i, off;
1492         struct csrdirectory *dir;
1493         struct csrreg *reg;
1494
1495         dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1496         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1497             (uint32_t *)dir, 1);
1498         if (err)
1499                 return (-1);
1500
1501         offset += sizeof(uint32_t);
1502         reg = (struct csrreg *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1503         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1504             (uint32_t *)reg, dir->crc_len);
1505         if (err)
1506                 return (-1);
1507
1508         /* XXX check CRC */
1509
1510         off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1511         if (fwdev->rommax < off)
1512                 fwdev->rommax = off;
1513
1514         if (recur == 0)
1515                 return (0);
1516
1517         for (i = 0; i < dir->crc_len; i ++, offset += sizeof(uint32_t)) {
1518                 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
1519                         recur = 1;
1520                 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
1521                         recur = 0;
1522                 else
1523                         continue;
1524
1525                 off = offset + reg[i].val * sizeof(uint32_t);
1526                 if (off > CROMSIZE) {
1527                         printf("%s: invalid offset %d\n", __FUNCTION__, off);
1528                         return(-1);
1529                 }
1530                 err = fw_explore_csrblock(fwdev, off, recur);
1531                 if (err)
1532                         return (-1);
1533         }
1534         return (0);
1535 }
1536
1537 static int
1538 fw_explore_node(struct fw_device *dfwdev)
1539 {
1540         struct firewire_comm *fc;
1541         struct fw_device *fwdev, *pfwdev, *tfwdev;
1542         uint32_t *csr;
1543         struct csrhdr *hdr;
1544         struct bus_info *binfo;
1545         int err, node;
1546         uint32_t speed_test = 0;
1547
1548         fc = dfwdev->fc;
1549         csr = dfwdev->csrrom;
1550         node = dfwdev->dst;
1551
1552         /* First quad */
1553         err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
1554         if (err) {
1555                 device_printf(fc->bdev, "%s: node%d: explore_read_quads failure\n",
1556                     __func__, node);
1557                 dfwdev->status = FWDEVINVAL;
1558                 return (-1);
1559         }
1560         hdr = (struct csrhdr *)&csr[0];
1561         if (hdr->info_len != 4) {
1562                 if (firewire_debug)
1563                         device_printf(fc->bdev, "%s: node%d: wrong bus info len(%d)\n",
1564                             __func__, node, hdr->info_len);
1565                 dfwdev->status = FWDEVINVAL;
1566                 return (-1);
1567         }
1568
1569         /* bus info */
1570         err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1571         if (err) {
1572                 device_printf(fc->bdev, "%s: node%d: error reading 0x04\n",
1573                     __func__, node);
1574                 dfwdev->status = FWDEVINVAL;
1575                 return (-1);
1576         }
1577         binfo = (struct bus_info *)&csr[1];
1578         if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1579                 device_printf(fc->bdev, "%s: node%d: invalid bus name 0x%08x\n",
1580                     __func__, node, binfo->bus_name);
1581                 dfwdev->status = FWDEVINVAL;
1582                 return (-1);
1583         }
1584
1585         if (firewire_debug)
1586                 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n"
1587                                         "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) "
1588                                         "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) "
1589                                         "generation(%d) link_spd(%d)\n",
1590                                         __func__, node,
1591                                         binfo->irmc, binfo->cmc, binfo->isc,
1592                                         binfo->bmc, binfo->pmc, binfo->cyc_clk_acc,
1593                                         binfo->max_rec, binfo->max_rom,
1594                                         binfo->generation, binfo->link_spd);
1595
1596         STAILQ_FOREACH(fwdev, &fc->devices, link)
1597                 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1598                         break;
1599         if (fwdev == NULL) {
1600                 /* new device */
1601                 fwdev = malloc(sizeof(struct fw_device), M_FW,
1602                                                 M_NOWAIT | M_ZERO);
1603                 if (fwdev == NULL) {
1604                         device_printf(fc->bdev, "%s: node%d: no memory\n",
1605                                         __func__, node);
1606                         return (-1);
1607                 }
1608                 fwdev->fc = fc;
1609                 fwdev->eui = binfo->eui64;
1610                 fwdev->dst = dfwdev->dst;
1611                 fwdev->maxrec = dfwdev->maxrec;
1612                 fwdev->status = dfwdev->status;
1613
1614                 /*
1615                  * Pre-1394a-2000 didn't have link_spd in
1616                  * the Bus Info block, so try and use the
1617                  * speed map value.
1618                  * 1394a-2000 compliant devices only use
1619                  * the Bus Info Block link spd value, so
1620                  * ignore the speed map alltogether. SWB
1621                  */
1622                 if ( binfo->link_spd == FWSPD_S100 /* 0 */) {
1623                         device_printf(fc->bdev, "%s: "
1624                                 "Pre 1394a-2000 detected\n",
1625                                 __func__);
1626                         fwdev->speed = fc->speed_map->speed[fc->nodeid][node];
1627                 } else
1628                         fwdev->speed = binfo->link_spd;
1629                 /*
1630                  * Test this speed with a read to the CSRROM.
1631                  * If it fails, slow down the speed and retry.
1632                  */
1633                 while (fwdev->speed > FWSPD_S100 /* 0 */) {
1634                         err = fw_explore_read_quads(fwdev, CSRROMOFF,
1635                                         &speed_test, 1);
1636                         if (err) {
1637                                 device_printf(fc->bdev, "%s: fwdev->speed(%s)"
1638                                                 " decremented due to negotiation\n",
1639                                                 __func__,
1640                                                 linkspeed[fwdev->speed]);
1641                                 fwdev->speed--;
1642                         } else
1643                                 break;
1644
1645                 }
1646
1647                 /*
1648                  * If the fwdev is not found in the
1649                  * fc->devices TAILQ, then we will add it.
1650                  */
1651                 pfwdev = NULL;
1652                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1653                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1654                                 (tfwdev->eui.hi == fwdev->eui.hi &&
1655                                 tfwdev->eui.lo > fwdev->eui.lo))
1656                                 break;
1657                         pfwdev = tfwdev;
1658                 }
1659                 if (pfwdev == NULL)
1660                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1661                 else
1662                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1663
1664                 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1665                     linkspeed[fwdev->speed],
1666                     fwdev->eui.hi, fwdev->eui.lo);
1667         } else {
1668                 fwdev->dst = node;
1669                 fwdev->status = FWDEVINIT;
1670                 /* unchanged ? */
1671                 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) {
1672                         if (firewire_debug)
1673                                 device_printf(fc->dev, "node%d: crom unchanged\n", node);
1674                         return (0);
1675                 }
1676         }
1677
1678         bzero(&fwdev->csrrom[0], CROMSIZE);
1679
1680         /* copy first quad and bus info block */
1681         bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5);
1682         fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1683
1684         err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1685
1686         if (err) {
1687                 if (firewire_debug)
1688                         device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n",
1689                                         __func__, err);
1690                 fwdev->status = FWDEVINVAL;
1691                 fwdev->csrrom[0] = 0;
1692         }
1693         return (err);
1694
1695 }
1696
1697 /*
1698  * Find the self_id packet for a node, ignoring sequels.
1699  */
1700 static union fw_self_id *
1701 fw_find_self_id(struct firewire_comm *fc, int node)
1702 {
1703         uint32_t i;
1704         union fw_self_id *s;
1705
1706         for (i = 0; i < fc->topology_map->self_id_count; i++) {
1707                 s = &fc->topology_map->self_id[i];
1708                 if (s->p0.sequel)
1709                         continue;
1710                 if (s->p0.phy_id == node)
1711                         return s;
1712         }
1713         return 0;
1714 }
1715
1716 static void
1717 fw_explore(struct firewire_comm *fc)
1718 {
1719         int node, err, s, i, todo, todo2, trys;
1720         char nodes[63];
1721         struct fw_device dfwdev;
1722         union fw_self_id *fwsid;
1723
1724         todo = 0;
1725         /* setup dummy fwdev */
1726         dfwdev.fc = fc;
1727         dfwdev.speed = 0;
1728         dfwdev.maxrec = 8; /* 512 */
1729         dfwdev.status = FWDEVINIT;
1730
1731         for (node = 0; node <= fc->max_node; node ++) {
1732                 /* We don't probe myself and linkdown nodes */
1733                 if (node == fc->nodeid) {
1734                         if (firewire_debug)
1735                                 device_printf(fc->bdev, "%s:"
1736                                         "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n",
1737                                         __func__, node, fc->nodeid, fc->max_node);
1738                         continue;
1739                 } else if (firewire_debug) {
1740                         device_printf(fc->bdev, "%s:"
1741                                 "node(%d) fc->max_node(%d) found\n",
1742                                 __func__, node, fc->max_node);
1743                 }
1744                 fwsid = fw_find_self_id(fc, node);
1745                 if (!fwsid || !fwsid->p0.link_active) {
1746                         if (firewire_debug)
1747                                 device_printf(fc->bdev, "%s: node%d: link down\n",
1748                                                         __func__, node);
1749                         continue;
1750                 }
1751                 nodes[todo++] = node;
1752         }
1753
1754         s = splfw();
1755         for (trys = 0; todo > 0 && trys < 3; trys ++) {
1756                 todo2 = 0;
1757                 for (i = 0; i < todo; i ++) {
1758                         dfwdev.dst = nodes[i];
1759                         err = fw_explore_node(&dfwdev);
1760                         if (err)
1761                                 nodes[todo2++] = nodes[i];
1762                         if (firewire_debug)
1763                                 device_printf(fc->bdev, "%s: node %d, err = %d\n",
1764                                         __func__, node, err);
1765                 }
1766                 todo = todo2;
1767         }
1768         splx(s);
1769 }
1770
1771
1772 static void
1773 fw_bus_probe_thread(void *arg)
1774 {
1775         struct firewire_comm *fc;
1776
1777         fc = (struct firewire_comm *)arg;
1778
1779         mtx_lock(&fc->wait_lock);
1780         while (fc->status != FWBUSDETACH) {
1781                 if (fc->status == FWBUSEXPLORE) {
1782                         mtx_unlock(&fc->wait_lock);
1783                         fw_explore(fc);
1784                         fc->status = FWBUSEXPDONE;
1785                         if (firewire_debug)
1786                                 printf("bus_explore done\n");
1787                         fw_attach_dev(fc);
1788                         mtx_lock(&fc->wait_lock);
1789                 }
1790                 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0);
1791         }
1792         mtx_unlock(&fc->wait_lock);
1793         kproc_exit(0);
1794 }
1795
1796 /*
1797  * To attach sub-devices layer onto IEEE1394 bus.
1798  */
1799 static void
1800 fw_attach_dev(struct firewire_comm *fc)
1801 {
1802         struct fw_device *fwdev, *next;
1803         int i, err;
1804         device_t *devlistp;
1805         int devcnt;
1806         struct firewire_dev_comm *fdc;
1807
1808         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1809                 next = STAILQ_NEXT(fwdev, link);
1810                 if (fwdev->status == FWDEVINIT) {
1811                         fwdev->status = FWDEVATTACHED;
1812                 } else if (fwdev->status == FWDEVINVAL) {
1813                         fwdev->rcnt ++;
1814                         if (firewire_debug)
1815                                 device_printf(fc->bdev, "%s:"
1816                                         "fwdev->rcnt(%d), hold_count(%d)\n",
1817                                         __func__, fwdev->rcnt, hold_count);
1818                         if (fwdev->rcnt > hold_count) {
1819                                 /*
1820                                  * Remove devices which have not been seen
1821                                  * for a while.
1822                                  */
1823                                 device_printf(fc->bdev, "%s:"
1824                                         "Removing missing device ID:%08x%08x\n",
1825                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1826                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1827                                     link);
1828                                 free(fwdev, M_FW);
1829                         }
1830                 }
1831         }
1832
1833         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1834         if( err == 0 ) {
1835                 for( i = 0 ; i < devcnt ; i++){
1836                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
1837                                 fdc = device_get_softc(devlistp[i]);
1838                                 if (fdc->post_explore != NULL)
1839                                         fdc->post_explore(fdc);
1840                         }
1841                 }
1842                 free(devlistp, M_TEMP);
1843         }
1844
1845         return;
1846 }
1847
1848 /*
1849  * To allocate unique transaction label.
1850  */
1851 static int
1852 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1853 {
1854         u_int dst, new_tlabel;
1855         struct fw_xfer *txfer;
1856         int s;
1857
1858         dst = xfer->send.hdr.mode.hdr.dst & 0x3f;
1859         s = splfw();
1860         mtx_lock(&fc->tlabel_lock);
1861         new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f;
1862         STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
1863                 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst)
1864                                 break;
1865         if(txfer == NULL) {
1866                 fc->last_tlabel[dst] = new_tlabel;
1867                 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
1868                 mtx_unlock(&fc->tlabel_lock);
1869                 splx(s);
1870                 xfer->tl = new_tlabel;
1871                 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
1872                 if (firewire_debug > 1)
1873                         printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel);
1874                 return (new_tlabel);
1875         }
1876         mtx_unlock(&fc->tlabel_lock);
1877         splx(s);
1878
1879         if (firewire_debug > 1)
1880                 printf("fw_get_tlabel: no free tlabel\n");
1881         return (-1);
1882 }
1883
1884 static void
1885 fw_rcv_copy(struct fw_rcv_buf *rb)
1886 {
1887         struct fw_pkt *pkt;
1888         u_char *p;
1889         struct tcode_info *tinfo;
1890         u_int res, i, len, plen;
1891
1892         rb->xfer->recv.spd = rb->spd;
1893
1894         pkt = (struct fw_pkt *)rb->vec->iov_base;
1895         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1896
1897         /* Copy header */
1898         p = (u_char *)&rb->xfer->recv.hdr;
1899         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1900         rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
1901         rb->vec->iov_len -= tinfo->hdr_len;
1902
1903         /* Copy payload */
1904         p = (u_char *)rb->xfer->recv.payload;
1905         res = rb->xfer->recv.pay_len;
1906
1907         /* special handling for RRESQ */
1908         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1909             p != NULL && res >= sizeof(uint32_t)) {
1910                 *(uint32_t *)p = pkt->mode.rresq.data;
1911                 rb->xfer->recv.pay_len = sizeof(uint32_t);
1912                 return;
1913         }
1914
1915         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1916                 return;
1917
1918         plen = pkt->mode.rresb.len;
1919
1920         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1921                 len = MIN(rb->vec->iov_len, plen);
1922                 if (res < len) {
1923                         device_printf(rb->fc->bdev, "%s:"
1924                                 " rcv buffer(%d) is %d bytes short.\n",
1925                                 __func__, rb->xfer->recv.pay_len, len - res);
1926                         len = res;
1927                 }
1928                 bcopy(rb->vec->iov_base, p, len);
1929                 p += len;
1930                 res -= len;
1931                 plen -= len;
1932                 if (res == 0 || plen == 0)
1933                         break;
1934         }
1935         rb->xfer->recv.pay_len -= res;
1936
1937 }
1938
1939 /*
1940  * Generic packet receiving process.
1941  */
1942 void
1943 fw_rcv(struct fw_rcv_buf *rb)
1944 {
1945         struct fw_pkt *fp, *resfp;
1946         struct fw_bind *bind;
1947         int tcode;
1948         int i, len, oldstate;
1949 #if 0
1950         {
1951                 uint32_t *qld;
1952                 int i;
1953                 qld = (uint32_t *)buf;
1954                 printf("spd %d len:%d\n", spd, len);
1955                 for( i = 0 ; i <= len && i < 32; i+= 4){
1956                         printf("0x%08x ", ntohl(qld[i/4]));
1957                         if((i % 16) == 15) printf("\n");
1958                 }
1959                 if((i % 16) != 15) printf("\n");
1960         }
1961 #endif
1962         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1963         tcode = fp->mode.common.tcode;
1964         switch (tcode) {
1965         case FWTCODE_WRES:
1966         case FWTCODE_RRESQ:
1967         case FWTCODE_RRESB:
1968         case FWTCODE_LRES:
1969                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1970                                 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode);
1971                 if(rb->xfer == NULL) {
1972                         device_printf(rb->fc->bdev, "%s: "
1973                                 "unknown response "
1974                                 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1975                                 __func__,
1976                                 tcode_str[tcode], tcode,
1977                                 fp->mode.hdr.src,
1978                                 fp->mode.hdr.tlrt >> 2,
1979                                 fp->mode.hdr.tlrt & 3,
1980                                 fp->mode.rresq.data);
1981 #if 0
1982                         printf("try ad-hoc work around!!\n");
1983                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1984                                         (fp->mode.hdr.tlrt >> 2)^3);
1985                         if (rb->xfer == NULL) {
1986                                 printf("no use...\n");
1987                                 return;
1988                         }
1989 #else
1990                         return;
1991 #endif
1992                 }
1993                 fw_rcv_copy(rb);
1994                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1995                         rb->xfer->resp = EIO;
1996                 else
1997                         rb->xfer->resp = 0;
1998                 /* make sure the packet is drained in AT queue */
1999                 oldstate = rb->xfer->flag;
2000                 rb->xfer->flag = FWXF_RCVD;
2001                 switch (oldstate) {
2002                 case FWXF_SENT:
2003                         fw_xfer_done(rb->xfer);
2004                         break;
2005                 case FWXF_START:
2006 #if 0
2007                         if (firewire_debug)
2008                                 printf("not sent yet tl=%x\n", rb->xfer->tl);
2009 #endif
2010                         break;
2011                 default:
2012                         device_printf(rb->fc->bdev, "%s: "
2013                                 "unexpected flag 0x%02x\n", __func__, rb->xfer->flag);
2014                 }
2015                 return;
2016         case FWTCODE_WREQQ:
2017         case FWTCODE_WREQB:
2018         case FWTCODE_RREQQ:
2019         case FWTCODE_RREQB:
2020         case FWTCODE_LREQ:
2021                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
2022                         fp->mode.rreqq.dest_lo);
2023                 if(bind == NULL){
2024                         device_printf(rb->fc->bdev, "%s: "
2025                                 "Unknown service addr 0x%04x:0x%08x %s(%x)"
2026 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2027                                 " src=0x%x data=%lx\n",
2028 #else
2029                                 " src=0x%x data=%x\n",
2030 #endif
2031                                 __func__,
2032                                 fp->mode.wreqq.dest_hi,
2033                                 fp->mode.wreqq.dest_lo,
2034                                 tcode_str[tcode], tcode,
2035                                 fp->mode.hdr.src,
2036                                 ntohl(fp->mode.wreqq.data));
2037
2038                         if (rb->fc->status == FWBUSINIT) {
2039                                 device_printf(rb->fc->bdev, "%s: cannot respond(bus reset)!\n",
2040                                                 __func__);
2041                                 return;
2042                         }
2043                         rb->xfer = fw_xfer_alloc(M_FWXFER);
2044                         if(rb->xfer == NULL){
2045                                 return;
2046                         }
2047                         rb->xfer->send.spd = rb->spd;
2048                         rb->xfer->send.pay_len = 0;
2049                         resfp = &rb->xfer->send.hdr;
2050                         switch (tcode) {
2051                         case FWTCODE_WREQQ:
2052                         case FWTCODE_WREQB:
2053                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
2054                                 break;
2055                         case FWTCODE_RREQQ:
2056                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
2057                                 break;
2058                         case FWTCODE_RREQB:
2059                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
2060                                 break;
2061                         case FWTCODE_LREQ:
2062                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
2063                                 break;
2064                         }
2065                         resfp->mode.hdr.dst = fp->mode.hdr.src;
2066                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
2067                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
2068                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
2069                         resfp->mode.rresb.extcode = 0;
2070                         resfp->mode.rresb.len = 0;
2071 /*
2072                         rb->xfer->hand = fw_xferwake;
2073 */
2074                         rb->xfer->hand = fw_xfer_free;
2075                         if(fw_asyreq(rb->fc, -1, rb->xfer)){
2076                                 fw_xfer_free(rb->xfer);
2077                                 return;
2078                         }
2079                         return;
2080                 }
2081                 len = 0;
2082                 for (i = 0; i < rb->nvec; i ++)
2083                         len += rb->vec[i].iov_len;
2084                 rb->xfer = STAILQ_FIRST(&bind->xferlist);
2085                 if (rb->xfer == NULL) {
2086                         device_printf(rb->fc->bdev, "%s: "
2087                                 "Discard a packet for this bind.\n",
2088                                 __func__);
2089                         return;
2090                 }
2091                 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
2092                 fw_rcv_copy(rb);
2093                 rb->xfer->hand(rb->xfer);
2094                 return;
2095 #if 0 /* shouldn't happen ?? or for GASP */
2096         case FWTCODE_STREAM:
2097         {
2098                 struct fw_xferq *xferq;
2099
2100                 xferq = rb->fc->ir[sub];
2101 #if 0
2102                 printf("stream rcv dma %d len %d off %d spd %d\n",
2103                         sub, len, off, spd);
2104 #endif
2105                 if(xferq->queued >= xferq->maxq) {
2106                         printf("receive queue is full\n");
2107                         return;
2108                 }
2109                 /* XXX get xfer from xfer queue, we don't need copy for
2110                         per packet mode */
2111                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
2112                                                 vec[0].iov_len);
2113                 if (rb->xfer == NULL)
2114                         return;
2115                 fw_rcv_copy(rb)
2116                 s = splfw();
2117                 xferq->queued++;
2118                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
2119                 splx(s);
2120                 sc = device_get_softc(rb->fc->bdev);
2121 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2122                 if (&xferq->rsel.si_pid != 0)
2123 #else
2124                 if (SEL_WAITING(&xferq->rsel))
2125 #endif
2126                         selwakeuppri(&xferq->rsel, FWPRI);
2127                 if (xferq->flag & FWXFERQ_WAKEUP) {
2128                         xferq->flag &= ~FWXFERQ_WAKEUP;
2129                         wakeup((caddr_t)xferq);
2130                 }
2131                 if (xferq->flag & FWXFERQ_HANDLER) {
2132                         xferq->hand(xferq);
2133                 }
2134                 return;
2135                 break;
2136         }
2137 #endif
2138         default:
2139                 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n",
2140                                 __func__, tcode);
2141                 break;
2142         }
2143 }
2144
2145 /*
2146  * Post process for Bus Manager election process.
2147  */
2148 static void
2149 fw_try_bmr_callback(struct fw_xfer *xfer)
2150 {
2151         struct firewire_comm *fc;
2152         int bmr;
2153
2154         if (xfer == NULL)
2155                 return;
2156         fc = xfer->fc;
2157         if (xfer->resp != 0)
2158                 goto error;
2159         if (xfer->recv.payload == NULL)
2160                 goto error;
2161         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2162                 goto error;
2163
2164         bmr = ntohl(xfer->recv.payload[0]);
2165         if (bmr == 0x3f)
2166                 bmr = fc->nodeid;
2167
2168         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2169         fw_xfer_free_buf(xfer);
2170         fw_bmr(fc);
2171         return;
2172
2173 error:
2174         device_printf(fc->bdev, "bus manager election failed\n");
2175         fw_xfer_free_buf(xfer);
2176 }
2177
2178
2179 /*
2180  * To candidate Bus Manager election process.
2181  */
2182 static void
2183 fw_try_bmr(void *arg)
2184 {
2185         struct fw_xfer *xfer;
2186         struct firewire_comm *fc = (struct firewire_comm *)arg;
2187         struct fw_pkt *fp;
2188         int err = 0;
2189
2190         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2191         if(xfer == NULL){
2192                 return;
2193         }
2194         xfer->send.spd = 0;
2195         fc->status = FWBUSMGRELECT;
2196
2197         fp = &xfer->send.hdr;
2198         fp->mode.lreq.dest_hi = 0xffff;
2199         fp->mode.lreq.tlrt = 0;
2200         fp->mode.lreq.tcode = FWTCODE_LREQ;
2201         fp->mode.lreq.pri = 0;
2202         fp->mode.lreq.src = 0;
2203         fp->mode.lreq.len = 8;
2204         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2205         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2206         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2207         xfer->send.payload[0] = htonl(0x3f);
2208         xfer->send.payload[1] = htonl(fc->nodeid);
2209         xfer->hand = fw_try_bmr_callback;
2210
2211         err = fw_asyreq(fc, -1, xfer);
2212         if(err){
2213                 fw_xfer_free_buf(xfer);
2214                 return;
2215         }
2216         return;
2217 }
2218
2219 #ifdef FW_VMACCESS
2220 /*
2221  * Software implementation for physical memory block access.
2222  * XXX:Too slow, usef for debug purpose only.
2223  */
2224 static void
2225 fw_vmaccess(struct fw_xfer *xfer){
2226         struct fw_pkt *rfp, *sfp = NULL;
2227         uint32_t *ld = (uint32_t *)xfer->recv.buf;
2228
2229         printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2230                         xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
2231         printf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2232         if(xfer->resp != 0){
2233                 fw_xfer_free( xfer);
2234                 return;
2235         }
2236         if(xfer->recv.buf == NULL){
2237                 fw_xfer_free( xfer);
2238                 return;
2239         }
2240         rfp = (struct fw_pkt *)xfer->recv.buf;
2241         switch(rfp->mode.hdr.tcode){
2242                 /* XXX need fix for 64bit arch */
2243                 case FWTCODE_WREQB:
2244                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2245                         xfer->send.len = 12;
2246                         sfp = (struct fw_pkt *)xfer->send.buf;
2247                         bcopy(rfp->mode.wreqb.payload,
2248                                 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
2249                         sfp->mode.wres.tcode = FWTCODE_WRES;
2250                         sfp->mode.wres.rtcode = 0;
2251                         break;
2252                 case FWTCODE_WREQQ:
2253                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2254                         xfer->send.len = 12;
2255                         sfp->mode.wres.tcode = FWTCODE_WRES;
2256                         *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
2257                         sfp->mode.wres.rtcode = 0;
2258                         break;
2259                 case FWTCODE_RREQB:
2260                         xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT);
2261                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2262                         sfp = (struct fw_pkt *)xfer->send.buf;
2263                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2264                                 sfp->mode.rresb.payload, (uint16_t)ntohs(rfp->mode.rreqb.len));
2265                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2266                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2267                         sfp->mode.rresb.rtcode = 0;
2268                         sfp->mode.rresb.extcode = 0;
2269                         break;
2270                 case FWTCODE_RREQQ:
2271                         xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2272                         xfer->send.len = 16;
2273                         sfp = (struct fw_pkt *)xfer->send.buf;
2274                         sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2275                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2276                         sfp->mode.rresb.rtcode = 0;
2277                         break;
2278                 default:
2279                         fw_xfer_free( xfer);
2280                         return;
2281         }
2282         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2283         xfer->dst = ntohs(rfp->mode.hdr.src);
2284         xfer->hand = fw_xfer_free;
2285
2286         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2287         sfp->mode.hdr.pri = 0;
2288
2289         fw_asyreq(xfer->fc, -1, xfer);
2290 /**/
2291         return;
2292 }
2293 #endif
2294
2295 /*
2296  * CRC16 check-sum for IEEE1394 register blocks.
2297  */
2298 uint16_t
2299 fw_crc16(uint32_t *ptr, uint32_t len){
2300         uint32_t i, sum, crc = 0;
2301         int shift;
2302         len = (len + 3) & ~3;
2303         for(i = 0 ; i < len ; i+= 4){
2304                 for( shift = 28 ; shift >= 0 ; shift -= 4){
2305                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2306                         crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2307                 }
2308                 crc &= 0xffff;
2309         }
2310         return((uint16_t) crc);
2311 }
2312
2313 /*
2314  * Find the root node, if it is not
2315  * Cycle Master Capable, then we should
2316  * override this and become the Cycle
2317  * Master
2318  */
2319 static int
2320 fw_bmr(struct firewire_comm *fc)
2321 {
2322         struct fw_device fwdev;
2323         union fw_self_id *self_id;
2324         int cmstr;
2325         uint32_t quad;
2326
2327         /* Check to see if the current root node is cycle master capable */
2328         self_id = fw_find_self_id(fc, fc->max_node);
2329         if (fc->max_node > 0) {
2330                 /* XXX check cmc bit of businfo block rather than contender */
2331                 if (self_id->p0.link_active && self_id->p0.contender)
2332                         cmstr = fc->max_node;
2333                 else {
2334                         device_printf(fc->bdev,
2335                                 "root node is not cycle master capable\n");
2336                         /* XXX shall we be the cycle master? */
2337                         cmstr = fc->nodeid;
2338                         /* XXX need bus reset */
2339                 }
2340         } else
2341                 cmstr = -1;
2342
2343         device_printf(fc->bdev, "bus manager %d %s\n",
2344                 CSRARC(fc, BUS_MGR_ID),
2345                 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : "");
2346         if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2347                 /* We are not the bus manager */
2348                 return(0);
2349         }
2350
2351         /* Optimize gapcount */
2352         if(fc->max_hop <= MAX_GAPHOP )
2353                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2354         /* If we are the cycle master, nothing to do */
2355         if (cmstr == fc->nodeid || cmstr == -1)
2356                 return 0;
2357         /* Bus probe has not finished, make dummy fwdev for cmstr */
2358         bzero(&fwdev, sizeof(fwdev));
2359         fwdev.fc = fc;
2360         fwdev.dst = cmstr;
2361         fwdev.speed = 0;
2362         fwdev.maxrec = 8; /* 512 */
2363         fwdev.status = FWDEVINIT;
2364         /* Set cmstr bit on the cycle master */
2365         quad = htonl(1 << 8);
2366         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2367                 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2368
2369         return 0;
2370 }
2371
2372 int
2373 fw_open_isodma(struct firewire_comm *fc, int tx)
2374 {
2375         struct fw_xferq **xferqa;
2376         struct fw_xferq *xferq;
2377         int i;
2378
2379         if (tx)
2380                 xferqa = &fc->it[0];
2381         else
2382                 xferqa = &fc->ir[0];
2383
2384         FW_GLOCK(fc);
2385         for (i = 0; i < fc->nisodma; i ++) {
2386                 xferq = xferqa[i];
2387                 if ((xferq->flag & FWXFERQ_OPEN) == 0) {
2388                         xferq->flag |= FWXFERQ_OPEN;
2389                         break;
2390                 }
2391         }
2392         if (i == fc->nisodma) {
2393                 printf("no free dma channel (tx=%d)\n", tx);
2394                 i = -1;
2395         }
2396         FW_GUNLOCK(fc);
2397         return (i);
2398 }
2399
2400 static int
2401 fw_modevent(module_t mode, int type, void *data)
2402 {
2403         int err = 0;
2404 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2405         static eventhandler_tag fwdev_ehtag = NULL;
2406 #endif
2407
2408         switch (type) {
2409         case MOD_LOAD:
2410 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2411                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2412                                                 fwdev_clone, 0, 1000);
2413 #endif
2414                 break;
2415         case MOD_UNLOAD:
2416 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2417                 if (fwdev_ehtag != NULL)
2418                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2419 #endif
2420                 break;
2421         case MOD_SHUTDOWN:
2422                 break;
2423         default:
2424                 return (EOPNOTSUPP);
2425         }
2426         return (err);
2427 }
2428
2429
2430 #ifdef __DragonFly__
2431 DECLARE_DUMMY_MODULE(firewire);
2432 #endif
2433 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0);
2434 MODULE_VERSION(firewire, 1);