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 1.27 2004/01/08 14:58:09 simokawa Exp $
  35  * $DragonFly: src/sys/dev/netif/fwe/if_fwe.c,v 1.15 2005/05/25 01:44:23 dillon Exp $
  36  */
  37
  38 #include "opt_inet.h"
  39
  40 #include <sys/param.h>
  41 #include <sys/conf.h>
  42 #include <sys/kernel.h>
  43 #include <sys/malloc.h>
  44 #include <sys/mbuf.h>
  45 #include <sys/socket.h>
  46 #include <sys/sockio.h>
  47 #include <sys/sysctl.h>
  48 #include <sys/systm.h>
  49 #include <sys/module.h>
  50 #include <sys/bus.h>
  51 #include <machine/bus.h>
  52
  53 #include <net/bpf.h>
  54 #include <net/ethernet.h>
  55 #include <net/if.h>
  56 #include <net/if_arp.h>
  57 #ifdef __DragonFly__
  58 #include <net/ifq_var.h>
  59 #include <net/vlan/if_vlan_var.h>
  60 #include <bus/firewire/firewire.h>
  61 #include <bus/firewire/firewirereg.h>
  62 #include "if_fwevar.h"
  63 #else
  64 #include <net/if_vlan_var.h>
  65
  66 #include <dev/firewire/firewire.h>
  67 #include <dev/firewire/firewirereg.h>
  68 #include <dev/firewire/if_fwevar.h>
  69 #endif
  70
  71 #define FWEDEBUG        if (fwedebug) if_printf
  72 #define TX_MAX_QUEUE    (FWMAXQUEUE - 1)
  73
  74 /* network interface */
  75 static void fwe_start (struct ifnet *);
  76 static int fwe_ioctl (struct ifnet *, u_long, caddr_t, struct ucred *);
  77 static void fwe_init (void *);
  78
  79 static void fwe_output_callback (struct fw_xfer *);
  80 static void fwe_as_output (struct fwe_softc *, struct ifnet *);
  81 static void fwe_as_input (struct fw_xferq *);
  82
  83 static int fwedebug = 0;
  84 static int stream_ch = 1;
  85 static int tx_speed = 2;
  86 static int rx_queue_len = FWMAXQUEUE;
  87
  88 MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface");
  89 SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RW, &fwedebug, 0, "");
  90 SYSCTL_DECL(_hw_firewire);
  91 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0,
  92         "Ethernet emulation subsystem");
  93 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0,
  94         "Stream channel to use");
  95 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RW, &tx_speed, 0,
  96         "Transmission speed");
  97 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len,
  98         0, "Length of the receive queue");
  99
 100 TUNABLE_INT("hw.firewire.fwe.stream_ch", &stream_ch);
 101 TUNABLE_INT("hw.firewire.fwe.tx_speed", &tx_speed);
 102 TUNABLE_INT("hw.firewire.fwe.rx_queue_len", &rx_queue_len);
 103
 104 #ifdef DEVICE_POLLING
 105
 106 static void
 107 fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
 108 {
 109         struct fwe_softc *fwe;
 110         struct firewire_comm *fc;
 111
 112         fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 113         fc = fwe->fd.fc;
 114         switch(cmd) {
 115         case POLL_REGISTER:
 116                 /* disable interrupts */
 117                 fc->set_intr(fc, 0);
 118                 break;
 119         case POLL_DEREGISTER:
 120                 /* enable interrupts */
 121                 fc->set_intr(fc, 1);
 122                 break;
 123         default:
 124                 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
 125                 break;
 126         }
 127 }
 128
 129 #endif
 130
 131 static void
 132 fwe_identify(driver_t *driver, device_t parent)
 133 {
 134         BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent));
 135 }
 136
 137 static int
 138 fwe_probe(device_t dev)
 139 {
 140         device_t pa;
 141
 142         pa = device_get_parent(dev);
 143         if(device_get_unit(dev) != device_get_unit(pa)){
 144                 return(ENXIO);
 145         }
 146
 147         device_set_desc(dev, "Ethernet over FireWire");
 148         return (0);
 149 }
 150
 151 static int
 152 fwe_attach(device_t dev)
 153 {
 154         struct fwe_softc *fwe;
 155         struct ifnet *ifp;
 156         int unit, s;
 157         u_char *eaddr;
 158         struct fw_eui64 *eui;
 159
 160         fwe = ((struct fwe_softc *)device_get_softc(dev));
 161         unit = device_get_unit(dev);
 162
 163         bzero(fwe, sizeof(struct fwe_softc));
 164         /* XXX */
 165         fwe->stream_ch = stream_ch;
 166         fwe->dma_ch = -1;
 167
 168         fwe->fd.fc = device_get_ivars(dev);
 169         if (tx_speed < 0)
 170                 tx_speed = fwe->fd.fc->speed;
 171
 172         fwe->fd.dev = dev;
 173         fwe->fd.post_explore = NULL;
 174         fwe->eth_softc.fwe = fwe;
 175
 176         fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM;
 177         fwe->pkt_hdr.mode.stream.sy = 0;
 178         fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 179
 180         /* generate fake MAC address: first and last 3bytes from eui64 */
 181 #define LOCAL (0x02)
 182 #define GROUP (0x01)
 183         eaddr = &fwe->eth_softc.arpcom.ac_enaddr[0];
 184
 185         eui = &fwe->fd.fc->eui;
 186         eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP;
 187         eaddr[1] = FW_EUI64_BYTE(eui, 1);
 188         eaddr[2] = FW_EUI64_BYTE(eui, 2);
 189         eaddr[3] = FW_EUI64_BYTE(eui, 5);
 190         eaddr[4] = FW_EUI64_BYTE(eui, 6);
 191         eaddr[5] = FW_EUI64_BYTE(eui, 7);
 192         printf("if_fwe%d: Fake Ethernet address: "
 193                 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit,
 194                 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]);
 195
 196         /* fill the rest and attach interface */
 197         ifp = &fwe->fwe_if;
 198         ifp->if_softc = &fwe->eth_softc;
 199
 200 #if __FreeBSD_version >= 501113 || defined(__DragonFly__)
 201         if_initname(ifp, device_get_name(dev), unit);
 202 #else
 203         ifp->if_unit = unit;
 204         ifp->if_name = "fwe";
 205 #endif
 206         ifp->if_init = fwe_init;
 207         ifp->if_start = fwe_start;
 208         ifp->if_ioctl = fwe_ioctl;
 209 #ifdef DEVICE_POLLING
 210         ifp->if_poll = fwe_poll;
 211 #endif
 212         ifp->if_mtu = ETHERMTU;
 213         ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
 214         ifq_set_maxlen(&ifp->if_snd, TX_MAX_QUEUE);
 215         ifq_set_ready(&ifp->if_snd);
 216
 217         s = splimp();
 218         ether_ifattach(ifp, eaddr);
 219         splx(s);
 220
 221         /* Tell the upper layer(s) we support long frames. */
 222         ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
 223 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 224         ifp->if_capabilities |= IFCAP_VLAN_MTU;
 225 #endif
 226
 227
 228         FWEDEBUG(ifp, "interface created\n");
 229         return 0;
 230 }
 231
 232 static void
 233 fwe_stop(struct fwe_softc *fwe)
 234 {
 235         struct firewire_comm *fc;
 236         struct fw_xferq *xferq;
 237         struct ifnet *ifp = &fwe->fwe_if;
 238         struct fw_xfer *xfer, *next;
 239         int i;
 240
 241         fc = fwe->fd.fc;
 242
 243         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
 244
 245         if (fwe->dma_ch >= 0) {
 246                 xferq = fc->ir[fwe->dma_ch];
 247
 248                 if (xferq->flag & FWXFERQ_RUNNING)
 249                         fc->irx_disable(fc, fwe->dma_ch);
 250                 xferq->flag &=
 251                         ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
 252                         FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
 253                 xferq->hand =  NULL;
 254
 255                 for (i = 0; i < xferq->bnchunk; i ++)
 256                         m_freem(xferq->bulkxfer[i].mbuf);
 257                 free(xferq->bulkxfer, M_FWE);
 258
 259                 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL;
 260                                         xfer = next) {
 261                         next = STAILQ_NEXT(xfer, link);
 262                         fw_xfer_free(xfer);
 263                 }
 264                 STAILQ_INIT(&fwe->xferlist);
 265
 266                 xferq->bulkxfer =  NULL;
 267                 fwe->dma_ch = -1;
 268         }
 269 }
 270
 271 static int
 272 fwe_detach(device_t dev)
 273 {
 274         struct fwe_softc *fwe;
 275         int s;
 276
 277         fwe = (struct fwe_softc *)device_get_softc(dev);
 278         s = splimp();
 279
 280         fwe_stop(fwe);
 281         ether_ifdetach(&fwe->fwe_if);
 282
 283         splx(s);
 284         return 0;
 285 }
 286
 287 static void
 288 fwe_init(void *arg)
 289 {
 290         struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
 291         struct firewire_comm *fc;
 292         struct ifnet *ifp = &fwe->fwe_if;
 293         struct fw_xferq *xferq;
 294         struct fw_xfer *xfer;
 295         struct mbuf *m;
 296         int i;
 297
 298         FWEDEBUG(ifp, "initializing\n");
 299
 300         /* XXX keep promiscoud mode */
 301         ifp->if_flags |= IFF_PROMISC;
 302
 303         fc = fwe->fd.fc;
 304 #define START 0
 305         if (fwe->dma_ch < 0) {
 306                 for (i = START; i < fc->nisodma; i ++) {
 307                         xferq = fc->ir[i];
 308                         if ((xferq->flag & FWXFERQ_OPEN) == 0)
 309                                 goto found;
 310                 }
 311                 printf("no free dma channel\n");
 312                 return;
 313 found:
 314                 fwe->dma_ch = i;
 315                 fwe->stream_ch = stream_ch;
 316                 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 317                 /* allocate DMA channel and init packet mode */
 318                 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF |
 319                                 FWXFERQ_HANDLER | FWXFERQ_STREAM;
 320                 xferq->flag &= ~0xff;
 321                 xferq->flag |= fwe->stream_ch & 0xff;
 322                 /* register fwe_input handler */
 323                 xferq->sc = (caddr_t) fwe;
 324                 xferq->hand = fwe_as_input;
 325                 xferq->bnchunk = rx_queue_len;
 326                 xferq->bnpacket = 1;
 327                 xferq->psize = MCLBYTES;
 328                 xferq->queued = 0;
 329                 xferq->buf = NULL;
 330                 xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
 331                         sizeof(struct fw_bulkxfer) * xferq->bnchunk,
 332                                                         M_FWE, M_WAITOK);
 333                 if (xferq->bulkxfer == NULL) {
 334                         printf("if_fwe: malloc failed\n");
 335                         return;
 336                 }
 337                 STAILQ_INIT(&xferq->stvalid);
 338                 STAILQ_INIT(&xferq->stfree);
 339                 STAILQ_INIT(&xferq->stdma);
 340                 xferq->stproc = NULL;
 341                 for (i = 0; i < xferq->bnchunk; i ++) {
 342                         m =
 343 #if defined(__DragonFly__)
 344                                 m_getcl(MB_WAIT, MT_DATA, M_PKTHDR);
 345 #elif __FreeBSD_version < 500000
 346                                 m_getcl(M_WAIT, MT_DATA, M_PKTHDR);
 347 #else
 348                                 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR);
 349 #endif
 350                         xferq->bulkxfer[i].mbuf = m;
 351                         if (m != NULL) {
 352                                 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
 353                                 STAILQ_INSERT_TAIL(&xferq->stfree,
 354                                                 &xferq->bulkxfer[i], link);
 355                         } else
 356                                 printf("fwe_as_input: m_getcl failed\n");
 357                 }
 358                 STAILQ_INIT(&fwe->xferlist);
 359                 for (i = 0; i < TX_MAX_QUEUE; i++) {
 360                         xfer = fw_xfer_alloc(M_FWE);
 361                         if (xfer == NULL)
 362                                 break;
 363                         xfer->send.spd = tx_speed;
 364                         xfer->fc = fwe->fd.fc;
 365                         xfer->retry_req = fw_asybusy;
 366                         xfer->sc = (caddr_t)fwe;
 367                         xfer->act.hand = fwe_output_callback;
 368                         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 369                 }
 370         } else
 371                 xferq = fc->ir[fwe->dma_ch];
 372
 373
 374         /* start dma */
 375         if ((xferq->flag & FWXFERQ_RUNNING) == 0)
 376                 fc->irx_enable(fc, fwe->dma_ch);
 377
 378         ifp->if_flags |= IFF_RUNNING;
 379         ifp->if_flags &= ~IFF_OACTIVE;
 380 }
 381
 382
 383 static int
 384 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
 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 defined(__FreeBSD__) && __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 defined(__DragonFly__) || __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(ifp, "resp = %d\n", xfer->resp);
 450         if (xfer->resp != 0)
 451                 ifp->if_oerrors ++;
 452
 453         m_freem(xfer->mbuf);
 454         fw_xfer_unload(xfer);
 455
 456         s = splimp();
 457         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 458         splx(s);
 459
 460         /* for queue full */
 461         if (!ifq_is_empty(&ifp->if_snd))
 462                 fwe_start(ifp);
 463 }
 464
 465 static void
 466 fwe_start(struct ifnet *ifp)
 467 {
 468         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 469         int s;
 470
 471         FWEDEBUG(ifp, "starting\n");
 472
 473         if (fwe->dma_ch < 0) {
 474                 FWEDEBUG(ifp, "not ready\n");
 475
 476                 s = splimp();
 477                 ifq_purge(&ifp->if_snd);
 478                 splx(s);
 479
 480                 return;
 481         }
 482
 483         s = splimp();
 484         ifp->if_flags |= IFF_OACTIVE;
 485
 486         if (!ifq_is_empty(&ifp->if_snd))
 487                 fwe_as_output(fwe, ifp);
 488
 489         ifp->if_flags &= ~IFF_OACTIVE;
 490         splx(s);
 491 }
 492
 493 #define HDR_LEN 4
 494 #ifndef ETHER_ALIGN
 495 #define ETHER_ALIGN 2
 496 #endif
 497 /* Async. stream output */
 498 static void
 499 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
 500 {
 501         struct mbuf *m;
 502         struct fw_xfer *xfer;
 503         struct fw_xferq *xferq;
 504         struct fw_pkt *fp;
 505         int i = 0;
 506
 507         xfer = NULL;
 508         xferq = fwe->fd.fc->atq;
 509         while (xferq->queued < xferq->maxq - 1) {
 510                 xfer = STAILQ_FIRST(&fwe->xferlist);
 511                 if (xfer == NULL) {
 512                         printf("if_fwe: lack of xfer\n");
 513                         return;
 514                 }
 515                 m = ifq_dequeue(&ifp->if_snd);
 516                 if (m == NULL)
 517                         break;
 518                 STAILQ_REMOVE_HEAD(&fwe->xferlist, link);
 519                 BPF_MTAP(ifp, m);
 520
 521                 /* keep ip packet alignment for alpha */
 522                 M_PREPEND(m, ETHER_ALIGN, MB_DONTWAIT);
 523                 fp = &xfer->send.hdr;
 524                 *(u_int32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr;
 525                 fp->mode.stream.len = m->m_pkthdr.len;
 526                 xfer->mbuf = m;
 527                 xfer->send.pay_len = m->m_pkthdr.len;
 528
 529                 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) {
 530                         /* error */
 531                         ifp->if_oerrors ++;
 532                         /* XXX set error code */
 533                         fwe_output_callback(xfer);
 534                 } else {
 535                         ifp->if_opackets ++;
 536                         i++;
 537                 }
 538         }
 539 #if 0
 540         if (i > 1)
 541                 printf("%d queued\n", i);
 542 #endif
 543         if (i > 0)
 544                 xferq->start(fwe->fd.fc);
 545 }
 546
 547 /* Async. stream output */
 548 static void
 549 fwe_as_input(struct fw_xferq *xferq)
 550 {
 551         struct mbuf *m, *m0;
 552         struct ifnet *ifp;
 553         struct fwe_softc *fwe;
 554         struct fw_bulkxfer *sxfer;
 555         struct fw_pkt *fp;
 556         u_char *c;
 557
 558         fwe = (struct fwe_softc *)xferq->sc;
 559         ifp = &fwe->fwe_if;
 560         while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
 561                 STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
 562                 fp = mtod(sxfer->mbuf, struct fw_pkt *);
 563                 if (fwe->fd.fc->irx_post != NULL)
 564                         fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld);
 565                 m = sxfer->mbuf;
 566
 567                 /* insert new rbuf */
 568                 sxfer->mbuf = m0 = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
 569                 if (m0 != NULL) {
 570                         m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
 571                         STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
 572                 } else
 573                         printf("fwe_as_input: m_getcl failed\n");
 574
 575                 if (sxfer->resp != 0 || fp->mode.stream.len <
 576                     ETHER_ALIGN + sizeof(struct ether_header)) {
 577                         m_freem(m);
 578                         ifp->if_ierrors ++;
 579                         continue;
 580                 }
 581
 582                 m->m_data += HDR_LEN + ETHER_ALIGN;
 583                 c = mtod(m, char *);
 584                 m->m_len = m->m_pkthdr.len =
 585                                 fp->mode.stream.len - ETHER_ALIGN;
 586                 m->m_pkthdr.rcvif = ifp;
 587 #if 0
 588                 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n"
 589                          "%02x %02x %02x %02x %02x %02x\n"
 590                          "%02x %02x %02x %02x\n"
 591                          "%02x %02x %02x %02x\n"
 592                          "%02x %02x %02x %02x\n"
 593                          "%02x %02x %02x %02x\n",
 594                          c[0], c[1], c[2], c[3], c[4], c[5],
 595                          c[6], c[7], c[8], c[9], c[10], c[11],
 596                          c[12], c[13], c[14], c[15],
 597                          c[16], c[17], c[18], c[19],
 598                          c[20], c[21], c[22], c[23],
 599                          c[20], c[21], c[22], c[23]
 600                  );
 601 #endif
 602                 (*ifp->if_input)(ifp, m);
 603                 ifp->if_ipackets ++;
 604         }
 605         if (STAILQ_FIRST(&xferq->stfree) != NULL)
 606                 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch);
 607 }
 608
 609
 610 static devclass_t fwe_devclass;
 611
 612 static device_method_t fwe_methods[] = {
 613         /* device interface */
 614         DEVMETHOD(device_identify,      fwe_identify),
 615         DEVMETHOD(device_probe,         fwe_probe),
 616         DEVMETHOD(device_attach,        fwe_attach),
 617         DEVMETHOD(device_detach,        fwe_detach),
 618         { 0, 0 }
 619 };
 620
 621 static driver_t fwe_driver = {
 622         "fwe",
 623         fwe_methods,
 624         sizeof(struct fwe_softc),
 625 };
 626
 627
 628 DECLARE_DUMMY_MODULE(fwe);
 629 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
 630 MODULE_VERSION(fwe, 1);
 631 MODULE_DEPEND(fwe, firewire, 1, 1, 1);