sys/dev/netif/fwe/if_fwe.c

   1 /*
   2  * Copyright (c) 2002-2003
   3  *      Hidetoshi Shimokawa. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *
  16  *      This product includes software developed by Hidetoshi Shimokawa.
  17  *
  18  * 4. Neither the name of the author nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $FreeBSD: src/sys/dev/firewire/if_fwe.c,v 1.1.2.11 2003/04/28 03:29:18 simokawa Exp $
  35  */
  36
  37 #include "opt_inet.h"
  38
  39 #include <sys/param.h>
  40 #include <sys/conf.h>
  41 #include <sys/kernel.h>
  42 #include <sys/malloc.h>
  43 #include <sys/mbuf.h>
  44 #include <sys/socket.h>
  45 #include <sys/sockio.h>
  46 #include <sys/sysctl.h>
  47 #include <sys/systm.h>
  48 #include <sys/module.h>
  49 #include <sys/bus.h>
  50 #include <machine/bus.h>
  51
  52 #include <net/bpf.h>
  53 #include <net/ethernet.h>
  54 #include <net/if.h>
  55 #include <net/if_arp.h>
  56 #include <net/if_vlan_var.h>
  57 #include <net/route.h>
  58
  59 #include <netinet/in.h>
  60
  61 #include <dev/firewire/firewire.h>
  62 #include <dev/firewire/firewirereg.h>
  63 #include <dev/firewire/if_fwevar.h>
  64
  65 #define FWEDEBUG        if (fwedebug) printf
  66 #define TX_MAX_QUEUE    (FWMAXQUEUE - 1)
  67 #define RX_MAX_QUEUE    FWMAXQUEUE
  68
  69 /* network interface */
  70 static void fwe_start __P((struct ifnet *));
  71 static int fwe_ioctl __P((struct ifnet *, u_long, caddr_t));
  72 static void fwe_init __P((void *));
  73
  74 static void fwe_output_callback __P((struct fw_xfer *));
  75 static void fwe_as_output __P((struct fwe_softc *, struct ifnet *));
  76 static void fwe_as_input __P((struct fw_xferq *));
  77
  78 static int fwedebug = 0;
  79 static int stream_ch = 1;
  80
  81 MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface");
  82 SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RW, &fwedebug, 0, "");
  83 SYSCTL_DECL(_hw_firewire);
  84 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0,
  85         "Ethernet Emulation Subsystem");
  86 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0,
  87         "Stream channel to use");
  88
  89 #ifdef DEVICE_POLLING
  90 #define FWE_POLL_REGISTER(func, fwe, ifp)                       \
  91         if (ether_poll_register(func, ifp)) {                   \
  92                 struct firewire_comm *fc = (fwe)->fd.fc;        \
  93                 fc->set_intr(fc, 0);                            \
  94         }
  95
  96 #define FWE_POLL_DEREGISTER(fwe, ifp)                           \
  97         do {                                                    \
  98                 struct firewire_comm *fc = (fwe)->fd.fc;        \
  99                 ether_poll_deregister(ifp);                     \
 100                 fc->set_intr(fc, 1);                            \
 101         } while(0)                                              \
 102
 103 static poll_handler_t fwe_poll;
 104
 105 static void
 106 fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
 107 {
 108         struct fwe_softc *fwe;
 109         struct firewire_comm *fc;
 110
 111         fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 112         fc = fwe->fd.fc;
 113         if (cmd == POLL_DEREGISTER) {
 114                 /* enable interrupts */
 115                 fc->set_intr(fc, 1);
 116                 return;
 117         }
 118         fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
 119 }
 120 #else
 121 #define FWE_POLL_REGISTER(func, fwe, ifp)
 122 #define FWE_POLL_DEREGISTER(fwe, ifp)
 123 #endif
 124 static void
 125 fwe_identify(driver_t *driver, device_t parent)
 126 {
 127         BUS_ADD_CHILD(parent, 0, "if_fwe", device_get_unit(parent));
 128 }
 129
 130 static int
 131 fwe_probe(device_t dev)
 132 {
 133         device_t pa;
 134
 135         pa = device_get_parent(dev);
 136         if(device_get_unit(dev) != device_get_unit(pa)){
 137                 return(ENXIO);
 138         }
 139
 140         device_set_desc(dev, "Ethernet over FireWire");
 141         return (0);
 142 }
 143
 144 static int
 145 fwe_attach(device_t dev)
 146 {
 147         struct fwe_softc *fwe;
 148         struct ifnet *ifp;
 149         int unit, s;
 150         u_char *eaddr;
 151         struct fw_eui64 *eui;
 152
 153         fwe = ((struct fwe_softc *)device_get_softc(dev));
 154         unit = device_get_unit(dev);
 155
 156         bzero(fwe, sizeof(struct fwe_softc));
 157         /* XXX */
 158         fwe->stream_ch = stream_ch;
 159         fwe->dma_ch = -1;
 160
 161         fwe->fd.fc = device_get_ivars(dev);
 162         fwe->fd.dev = dev;
 163         fwe->fd.post_explore = NULL;
 164         fwe->eth_softc.fwe = fwe;
 165
 166         fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM;
 167         fwe->pkt_hdr.mode.stream.sy = 0;
 168         fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 169
 170         /* generate fake MAC address: first and last 3bytes from eui64 */
 171 #define LOCAL (0x02)
 172 #define GROUP (0x01)
 173         eaddr = &fwe->eth_softc.arpcom.ac_enaddr[0];
 174
 175         eui = &fwe->fd.fc->eui;
 176         eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP;
 177         eaddr[1] = FW_EUI64_BYTE(eui, 1);
 178         eaddr[2] = FW_EUI64_BYTE(eui, 2);
 179         eaddr[3] = FW_EUI64_BYTE(eui, 5);
 180         eaddr[4] = FW_EUI64_BYTE(eui, 6);
 181         eaddr[5] = FW_EUI64_BYTE(eui, 7);
 182         printf("if_fwe%d: Fake Ethernet address: "
 183                 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit,
 184                 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]);
 185
 186         /* fill the rest and attach interface */
 187         ifp = &fwe->fwe_if;
 188         ifp->if_softc = &fwe->eth_softc;
 189
 190         ifp->if_unit = unit;
 191         ifp->if_name = "fwe";
 192         ifp->if_init = fwe_init;
 193         ifp->if_output = ether_output;
 194         ifp->if_start = fwe_start;
 195         ifp->if_ioctl = fwe_ioctl;
 196         ifp->if_mtu = ETHERMTU;
 197         ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
 198         ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE;
 199
 200         s = splimp();
 201 #if __FreeBSD_version >= 500000
 202         ether_ifattach(ifp, eaddr);
 203 #else
 204         ether_ifattach(ifp, 1);
 205 #endif
 206         splx(s);
 207
 208         /* Tell the upper layer(s) we support long frames. */
 209         ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
 210 #if __FreeBSD_version >= 500000
 211         ifp->if_capabilities |= IFCAP_VLAN_MTU;
 212 #endif
 213
 214
 215         FWEDEBUG("interface %s%d created.\n", ifp->if_name, ifp->if_unit);
 216         return 0;
 217 }
 218
 219 static void
 220 fwe_stop(struct fwe_softc *fwe)
 221 {
 222         struct firewire_comm *fc;
 223         struct fw_xferq *xferq;
 224         struct ifnet *ifp = &fwe->fwe_if;
 225         struct fw_xfer *xfer, *next;
 226         int i;
 227
 228         fc = fwe->fd.fc;
 229
 230         FWE_POLL_DEREGISTER(fwe, ifp);
 231
 232         if (fwe->dma_ch >= 0) {
 233                 xferq = fc->ir[fwe->dma_ch];
 234
 235                 if (xferq->flag & FWXFERQ_RUNNING)
 236                         fc->irx_disable(fc, fwe->dma_ch);
 237                 xferq->flag &=
 238                         ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
 239                         FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
 240                 xferq->hand =  NULL;
 241
 242                 for (i = 0; i < xferq->bnchunk; i ++)
 243                         m_freem(xferq->bulkxfer[i].mbuf);
 244                 free(xferq->bulkxfer, M_FWE);
 245
 246                 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL;
 247                                         xfer = next) {
 248                         next = STAILQ_NEXT(xfer, link);
 249                         fw_xfer_free(xfer);
 250                 }
 251                 STAILQ_INIT(&fwe->xferlist);
 252
 253                 xferq->bulkxfer =  NULL;
 254                 fwe->dma_ch = -1;
 255         }
 256
 257         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
 258 }
 259
 260 static int
 261 fwe_detach(device_t dev)
 262 {
 263         struct fwe_softc *fwe;
 264         int s;
 265
 266         fwe = (struct fwe_softc *)device_get_softc(dev);
 267         s = splimp();
 268
 269         fwe_stop(fwe);
 270 #if __FreeBSD_version >= 500000
 271         ether_ifdetach(&fwe->fwe_if);
 272 #else
 273         ether_ifdetach(&fwe->fwe_if, 1);
 274 #endif
 275
 276         splx(s);
 277         return 0;
 278 }
 279
 280 static void
 281 fwe_init(void *arg)
 282 {
 283         struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
 284         struct firewire_comm *fc;
 285         struct ifnet *ifp = &fwe->fwe_if;
 286         struct fw_xferq *xferq;
 287         struct fw_xfer *xfer;
 288         struct mbuf *m;
 289         int i;
 290
 291         FWEDEBUG("initializing %s%d\n", ifp->if_name, ifp->if_unit);
 292
 293         /* XXX keep promiscoud mode */
 294         ifp->if_flags |= IFF_PROMISC;
 295
 296         fc = fwe->fd.fc;
 297 #define START 0
 298         if (fwe->dma_ch < 0) {
 299                 xferq = NULL;
 300                 for (i = START; i < fc->nisodma; i ++) {
 301                         xferq = fc->ir[i];
 302                         if ((xferq->flag & FWXFERQ_OPEN) == 0)
 303                                 break;
 304                 }
 305
 306                 if (xferq == NULL) {
 307                         printf("no free dma channel\n");
 308                         return;
 309                 }
 310                 fwe->dma_ch = i;
 311                 fwe->stream_ch = stream_ch;
 312                 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 313                 /* allocate DMA channel and init packet mode */
 314                 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF |
 315                                 FWXFERQ_HANDLER | FWXFERQ_STREAM;
 316                 xferq->flag &= ~0xff;
 317                 xferq->flag |= fwe->stream_ch & 0xff;
 318                 /* register fwe_input handler */
 319                 xferq->sc = (caddr_t) fwe;
 320                 xferq->hand = fwe_as_input;
 321                 xferq->bnchunk = RX_MAX_QUEUE;
 322                 xferq->bnpacket = 1;
 323                 xferq->psize = MCLBYTES;
 324                 xferq->queued = 0;
 325                 xferq->buf = NULL;
 326                 xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
 327                         sizeof(struct fw_bulkxfer) * xferq->bnchunk,
 328                                                         M_FWE, M_WAITOK);
 329                 if (xferq->bulkxfer == NULL) {
 330                         printf("if_fwe: malloc failed\n");
 331                         return;
 332                 }
 333                 STAILQ_INIT(&xferq->stvalid);
 334                 STAILQ_INIT(&xferq->stfree);
 335                 STAILQ_INIT(&xferq->stdma);
 336                 xferq->stproc = NULL;
 337                 for (i = 0; i < xferq->bnchunk; i ++) {
 338                         m =
 339 #if __FreeBSD_version >= 500000
 340                                 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR);
 341 #else
 342                                 m_getcl(M_WAIT, MT_DATA, M_PKTHDR);
 343 #endif
 344                         xferq->bulkxfer[i].mbuf = m;
 345                         if (m != NULL) {
 346                                 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
 347                                 STAILQ_INSERT_TAIL(&xferq->stfree,
 348                                                 &xferq->bulkxfer[i], link);
 349                         } else
 350                                 printf("fwe_as_input: m_getcl failed\n");
 351                 }
 352                 STAILQ_INIT(&fwe->xferlist);
 353                 for (i = 0; i < TX_MAX_QUEUE; i++) {
 354                         xfer = fw_xfer_alloc(M_FWE);
 355                         if (xfer == NULL)
 356                                 break;
 357                         xfer->spd = 2;
 358                         xfer->fc = fwe->fd.fc;
 359                         xfer->retry_req = fw_asybusy;
 360                         xfer->sc = (caddr_t)fwe;
 361                         xfer->act.hand = fwe_output_callback;
 362                         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 363                 }
 364         } else
 365                 xferq = fc->ir[fwe->dma_ch];
 366
 367
 368         /* start dma */
 369         if ((xferq->flag & FWXFERQ_RUNNING) == 0)
 370                 fc->irx_enable(fc, fwe->dma_ch);
 371
 372         ifp->if_flags |= IFF_RUNNING;
 373         ifp->if_flags &= ~IFF_OACTIVE;
 374
 375         FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
 376 #if 0
 377         /* attempt to start output */
 378         fwe_start(ifp);
 379 #endif
 380 }
 381
 382
 383 static int
 384 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 385 {
 386         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 387         struct ifstat *ifs = NULL;
 388         int s, error, len;
 389
 390         switch (cmd) {
 391                 case SIOCSIFFLAGS:
 392                         s = splimp();
 393                         if (ifp->if_flags & IFF_UP) {
 394                                 if (!(ifp->if_flags & IFF_RUNNING))
 395                                         fwe_init(&fwe->eth_softc);
 396                         } else {
 397                                 if (ifp->if_flags & IFF_RUNNING)
 398                                         fwe_stop(fwe);
 399                         }
 400                         /* XXX keep promiscoud mode */
 401                         ifp->if_flags |= IFF_PROMISC;
 402                         splx(s);
 403                         break;
 404                 case SIOCADDMULTI:
 405                 case SIOCDELMULTI:
 406                         break;
 407
 408                 case SIOCGIFSTATUS:
 409                         s = splimp();
 410                         ifs = (struct ifstat *)data;
 411                         len = strlen(ifs->ascii);
 412                         if (len < sizeof(ifs->ascii))
 413                                 snprintf(ifs->ascii + len,
 414                                         sizeof(ifs->ascii) - len,
 415                                         "\tch %d dma %d\n",
 416                                                 fwe->stream_ch, fwe->dma_ch);
 417                         splx(s);
 418                         break;
 419 #if __FreeBSD_version >= 500000
 420                 default:
 421 #else
 422                 case SIOCSIFADDR:
 423                 case SIOCGIFADDR:
 424                 case SIOCSIFMTU:
 425 #endif
 426                         s = splimp();
 427                         error = ether_ioctl(ifp, cmd, data);
 428                         splx(s);
 429                         return (error);
 430 #if __FreeBSD_version < 500000
 431                 default:
 432                         return (EINVAL);
 433 #endif
 434         }
 435
 436         return (0);
 437 }
 438
 439 static void
 440 fwe_output_callback(struct fw_xfer *xfer)
 441 {
 442         struct fwe_softc *fwe;
 443         struct ifnet *ifp;
 444         int s;
 445
 446         fwe = (struct fwe_softc *)xfer->sc;
 447         ifp = &fwe->fwe_if;
 448         /* XXX error check */
 449         FWEDEBUG("resp = %d\n", xfer->resp);
 450         if (xfer->resp != 0)
 451                 ifp->if_oerrors ++;
 452
 453         m_freem(xfer->mbuf);
 454         xfer->send.buf = NULL;
 455         fw_xfer_unload(xfer);
 456
 457         s = splimp();
 458         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 459         splx(s);
 460
 461         /* for queue full */
 462         if (ifp->if_snd.ifq_head != NULL)
 463                 fwe_start(ifp);
 464 }
 465
 466 static void
 467 fwe_start(struct ifnet *ifp)
 468 {
 469         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 470         int s;
 471
 472         FWEDEBUG("%s%d starting\n", ifp->if_name, ifp->if_unit);
 473
 474         if (fwe->dma_ch < 0) {
 475                 struct mbuf     *m = NULL;
 476
 477                 FWEDEBUG("%s%d not ready.\n", ifp->if_name, ifp->if_unit);
 478
 479                 s = splimp();
 480                 do {
 481                         IF_DEQUEUE(&ifp->if_snd, m);
 482                         if (m != NULL)
 483                                 m_freem(m);
 484                         ifp->if_oerrors ++;
 485                 } while (m != NULL);
 486                 splx(s);
 487
 488                 return;
 489         }
 490
 491         s = splimp();
 492         ifp->if_flags |= IFF_OACTIVE;
 493
 494         if (ifp->if_snd.ifq_len != 0)
 495                 fwe_as_output(fwe, ifp);
 496
 497         ifp->if_flags &= ~IFF_OACTIVE;
 498         splx(s);
 499 }
 500
 501 #define HDR_LEN 4
 502 #ifndef ETHER_ALIGN
 503 #define ETHER_ALIGN 2
 504 #endif
 505 /* Async. stream output */
 506 static void
 507 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
 508 {
 509         struct mbuf *m;
 510         struct fw_xfer *xfer;
 511         struct fw_xferq *xferq;
 512         struct fw_pkt *fp;
 513         int i = 0;
 514
 515         xfer = NULL;
 516         xferq = fwe->fd.fc->atq;
 517         while (xferq->queued < xferq->maxq - 1) {
 518                 xfer = STAILQ_FIRST(&fwe->xferlist);
 519                 if (xfer == NULL) {
 520                         printf("if_fwe: lack of xfer\n");
 521                         return;
 522                 }
 523                 IF_DEQUEUE(&ifp->if_snd, m);
 524                 if (m == NULL)
 525                         break;
 526                 STAILQ_REMOVE_HEAD(&fwe->xferlist, link);
 527 #if __FreeBSD_version >= 500000
 528                 BPF_MTAP(ifp, m);
 529 #else
 530                 if (ifp->if_bpf != NULL)
 531                         bpf_mtap(ifp, m);
 532 #endif
 533
 534                 /* keep ip packet alignment for alpha */
 535                 M_PREPEND(m, ETHER_ALIGN, M_DONTWAIT);
 536                 fp = (struct fw_pkt *)&xfer->dst; /* XXX */
 537                 xfer->dst = *((int32_t *)&fwe->pkt_hdr);
 538                 fp->mode.stream.len = m->m_pkthdr.len;
 539                 xfer->send.buf = (caddr_t) fp;
 540                 xfer->mbuf = m;
 541                 xfer->send.len = m->m_pkthdr.len + HDR_LEN;
 542
 543                 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) {
 544                         /* error */
 545                         ifp->if_oerrors ++;
 546                         /* XXX set error code */
 547                         fwe_output_callback(xfer);
 548                 } else {
 549                         ifp->if_opackets ++;
 550                         i++;
 551                 }
 552         }
 553 #if 0
 554         if (i > 1)
 555                 printf("%d queued\n", i);
 556 #endif
 557         if (i > 0)
 558                 xferq->start(fwe->fd.fc);
 559 }
 560
 561 /* Async. stream output */
 562 static void
 563 fwe_as_input(struct fw_xferq *xferq)
 564 {
 565         struct mbuf *m, *m0;
 566         struct ifnet *ifp;
 567         struct fwe_softc *fwe;
 568         struct fw_bulkxfer *sxfer;
 569         struct fw_pkt *fp;
 570         u_char *c;
 571 #if __FreeBSD_version < 500000
 572         struct ether_header *eh;
 573 #endif
 574
 575         fwe = (struct fwe_softc *)xferq->sc;
 576         ifp = &fwe->fwe_if;
 577 #if 0
 578         FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
 579 #endif
 580         while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
 581                 STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
 582                 if (sxfer->resp != 0)
 583                         ifp->if_ierrors ++;
 584                 fp = mtod(sxfer->mbuf, struct fw_pkt *);
 585                 /* XXX */
 586                 if (fwe->fd.fc->irx_post != NULL)
 587                         fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld);
 588                 m = sxfer->mbuf;
 589
 590                 /* insert rbuf */
 591                 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 592                 if (m0 != NULL) {
 593                         m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
 594                         STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
 595                 } else
 596                         printf("fwe_as_input: m_getcl failed\n");
 597
 598                 m->m_data += HDR_LEN + ETHER_ALIGN;
 599                 c = mtod(m, char *);
 600 #if __FreeBSD_version < 500000
 601                 eh = (struct ether_header *)c;
 602                 m->m_data += sizeof(struct ether_header);
 603 #endif
 604                 m->m_len = m->m_pkthdr.len =
 605                                 fp->mode.stream.len - ETHER_ALIGN;
 606                 m->m_pkthdr.rcvif = ifp;
 607 #if 0
 608                 FWEDEBUG("%02x %02x %02x %02x %02x %02x\n"
 609                          "%02x %02x %02x %02x %02x %02x\n"
 610                          "%02x %02x %02x %02x\n"
 611                          "%02x %02x %02x %02x\n"
 612                          "%02x %02x %02x %02x\n"
 613                          "%02x %02x %02x %02x\n",
 614                          c[0], c[1], c[2], c[3], c[4], c[5],
 615                          c[6], c[7], c[8], c[9], c[10], c[11],
 616                          c[12], c[13], c[14], c[15],
 617                          c[16], c[17], c[18], c[19],
 618                          c[20], c[21], c[22], c[23],
 619                          c[20], c[21], c[22], c[23]
 620                  );
 621 #endif
 622 #if __FreeBSD_version >= 500000
 623                 (*ifp->if_input)(ifp, m);
 624 #else
 625                 ether_input(ifp, eh, m);
 626 #endif
 627                 ifp->if_ipackets ++;
 628         }
 629         if (STAILQ_FIRST(&xferq->stfree) != NULL)
 630                 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch);
 631 }
 632
 633
 634 static devclass_t fwe_devclass;
 635
 636 static device_method_t fwe_methods[] = {
 637         /* device interface */
 638         DEVMETHOD(device_identify,      fwe_identify),
 639         DEVMETHOD(device_probe,         fwe_probe),
 640         DEVMETHOD(device_attach,        fwe_attach),
 641         DEVMETHOD(device_detach,        fwe_detach),
 642         { 0, 0 }
 643 };
 644
 645 static driver_t fwe_driver = {
 646         "if_fwe",
 647         fwe_methods,
 648         sizeof(struct fwe_softc),
 649 };
 650
 651
 652 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
 653 MODULE_VERSION(fwe, 1);
 654 MODULE_DEPEND(fwe, firewire, 1, 1, 1);