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 1.17 2005/05/31 08:06:47 joerg 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 s;
 157         uint8_t eaddr[ETHER_ADDR_LEN];
 158         struct fw_eui64 *eui;
 159
 160         fwe = ((struct fwe_softc *)device_get_softc(dev));
 161
 162         bzero(fwe, sizeof(struct fwe_softc));
 163         /* XXX */
 164         fwe->stream_ch = stream_ch;
 165         fwe->dma_ch = -1;
 166
 167         fwe->fd.fc = device_get_ivars(dev);
 168         if (tx_speed < 0)
 169                 tx_speed = fwe->fd.fc->speed;
 170
 171         fwe->fd.dev = dev;
 172         fwe->fd.post_explore = NULL;
 173         fwe->eth_softc.fwe = fwe;
 174
 175         fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM;
 176         fwe->pkt_hdr.mode.stream.sy = 0;
 177         fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 178
 179         /* generate fake MAC address: first and last 3bytes from eui64 */
 180 #define LOCAL (0x02)
 181 #define GROUP (0x01)
 182
 183         eui = &fwe->fd.fc->eui;
 184         eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP;
 185         eaddr[1] = FW_EUI64_BYTE(eui, 1);
 186         eaddr[2] = FW_EUI64_BYTE(eui, 2);
 187         eaddr[3] = FW_EUI64_BYTE(eui, 5);
 188         eaddr[4] = FW_EUI64_BYTE(eui, 6);
 189         eaddr[5] = FW_EUI64_BYTE(eui, 7);
 190
 191         /* fill the rest and attach interface */
 192         ifp = &fwe->fwe_if;
 193         ifp->if_softc = &fwe->eth_softc;
 194
 195         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 196         ifp->if_init = fwe_init;
 197         ifp->if_start = fwe_start;
 198         ifp->if_ioctl = fwe_ioctl;
 199         ifp->if_capabilities = IFCAP_VLAN_MTU;
 200 #ifdef DEVICE_POLLING
 201         ifp->if_poll = fwe_poll;
 202 #endif
 203         ifp->if_mtu = ETHERMTU;
 204         ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
 205         ifq_set_maxlen(&ifp->if_snd, TX_MAX_QUEUE);
 206         ifq_set_ready(&ifp->if_snd);
 207
 208         s = splimp();
 209         ether_ifattach(ifp, eaddr);
 210         splx(s);
 211
 212         /* Tell the upper layer(s) we support long frames. */
 213         ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
 214
 215
 216         FWEDEBUG(ifp, "interface created\n");
 217         return 0;
 218 }
 219
 220 static void
 221 fwe_stop(struct fwe_softc *fwe)
 222 {
 223         struct firewire_comm *fc;
 224         struct fw_xferq *xferq;
 225         struct ifnet *ifp = &fwe->fwe_if;
 226         struct fw_xfer *xfer, *next;
 227         int i;
 228
 229         fc = fwe->fd.fc;
 230
 231         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
 232
 233         if (fwe->dma_ch >= 0) {
 234                 xferq = fc->ir[fwe->dma_ch];
 235
 236                 if (xferq->flag & FWXFERQ_RUNNING)
 237                         fc->irx_disable(fc, fwe->dma_ch);
 238                 xferq->flag &=
 239                         ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
 240                         FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
 241                 xferq->hand =  NULL;
 242
 243                 for (i = 0; i < xferq->bnchunk; i ++)
 244                         m_freem(xferq->bulkxfer[i].mbuf);
 245                 free(xferq->bulkxfer, M_FWE);
 246
 247                 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL;
 248                                         xfer = next) {
 249                         next = STAILQ_NEXT(xfer, link);
 250                         fw_xfer_free(xfer);
 251                 }
 252                 STAILQ_INIT(&fwe->xferlist);
 253
 254                 xferq->bulkxfer =  NULL;
 255                 fwe->dma_ch = -1;
 256         }
 257 }
 258
 259 static int
 260 fwe_detach(device_t dev)
 261 {
 262         struct fwe_softc *fwe;
 263         int s;
 264
 265         fwe = (struct fwe_softc *)device_get_softc(dev);
 266         s = splimp();
 267
 268         fwe_stop(fwe);
 269         ether_ifdetach(&fwe->fwe_if);
 270
 271         splx(s);
 272         return 0;
 273 }
 274
 275 static void
 276 fwe_init(void *arg)
 277 {
 278         struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
 279         struct firewire_comm *fc;
 280         struct ifnet *ifp = &fwe->fwe_if;
 281         struct fw_xferq *xferq;
 282         struct fw_xfer *xfer;
 283         struct mbuf *m;
 284         int i;
 285
 286         FWEDEBUG(ifp, "initializing\n");
 287
 288         /* XXX keep promiscoud mode */
 289         ifp->if_flags |= IFF_PROMISC;
 290
 291         fc = fwe->fd.fc;
 292 #define START 0
 293         if (fwe->dma_ch < 0) {
 294                 for (i = START; i < fc->nisodma; i ++) {
 295                         xferq = fc->ir[i];
 296                         if ((xferq->flag & FWXFERQ_OPEN) == 0)
 297                                 goto found;
 298                 }
 299                 if_printf(ifp, "no free dma channel\n");
 300                 return;
 301 found:
 302                 fwe->dma_ch = i;
 303                 fwe->stream_ch = stream_ch;
 304                 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 305                 /* allocate DMA channel and init packet mode */
 306                 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF |
 307                                 FWXFERQ_HANDLER | FWXFERQ_STREAM;
 308                 xferq->flag &= ~0xff;
 309                 xferq->flag |= fwe->stream_ch & 0xff;
 310                 /* register fwe_input handler */
 311                 xferq->sc = (caddr_t) fwe;
 312                 xferq->hand = fwe_as_input;
 313                 xferq->bnchunk = rx_queue_len;
 314                 xferq->bnpacket = 1;
 315                 xferq->psize = MCLBYTES;
 316                 xferq->queued = 0;
 317                 xferq->buf = NULL;
 318                 xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
 319                         sizeof(struct fw_bulkxfer) * xferq->bnchunk,
 320                                                         M_FWE, M_WAITOK);
 321                 if (xferq->bulkxfer == NULL) {
 322                         if_printf(ifp, "malloc failed\n");
 323                         return;
 324                 }
 325                 STAILQ_INIT(&xferq->stvalid);
 326                 STAILQ_INIT(&xferq->stfree);
 327                 STAILQ_INIT(&xferq->stdma);
 328                 xferq->stproc = NULL;
 329                 for (i = 0; i < xferq->bnchunk; i ++) {
 330                         m = m_getcl(MB_WAIT, MT_DATA, M_PKTHDR);
 331                         xferq->bulkxfer[i].mbuf = m;
 332                         if (m != NULL) {
 333                                 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
 334                                 STAILQ_INSERT_TAIL(&xferq->stfree,
 335                                                 &xferq->bulkxfer[i], link);
 336                         } else {
 337                                 if_printf(ifp, "fwe_init: m_getcl failed\n");
 338                         }
 339                 }
 340                 STAILQ_INIT(&fwe->xferlist);
 341                 for (i = 0; i < TX_MAX_QUEUE; i++) {
 342                         xfer = fw_xfer_alloc(M_FWE);
 343                         if (xfer == NULL)
 344                                 break;
 345                         xfer->send.spd = tx_speed;
 346                         xfer->fc = fwe->fd.fc;
 347                         xfer->retry_req = fw_asybusy;
 348                         xfer->sc = (caddr_t)fwe;
 349                         xfer->act.hand = fwe_output_callback;
 350                         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 351                 }
 352         } else
 353                 xferq = fc->ir[fwe->dma_ch];
 354
 355
 356         /* start dma */
 357         if ((xferq->flag & FWXFERQ_RUNNING) == 0)
 358                 fc->irx_enable(fc, fwe->dma_ch);
 359
 360         ifp->if_flags |= IFF_RUNNING;
 361         ifp->if_flags &= ~IFF_OACTIVE;
 362 }
 363
 364
 365 static int
 366 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
 367 {
 368         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 369         struct ifstat *ifs = NULL;
 370         int s, error, len;
 371
 372         switch (cmd) {
 373         case SIOCSIFFLAGS:
 374                 s = splimp();
 375                 if (ifp->if_flags & IFF_UP) {
 376                         if (!(ifp->if_flags & IFF_RUNNING))
 377                                 fwe_init(&fwe->eth_softc);
 378                 } else {
 379                         if (ifp->if_flags & IFF_RUNNING)
 380                                 fwe_stop(fwe);
 381                 }
 382                 /* XXX keep promiscoud mode */
 383                 ifp->if_flags |= IFF_PROMISC;
 384                 splx(s);
 385                 break;
 386         case SIOCADDMULTI:
 387         case SIOCDELMULTI:
 388                 break;
 389
 390         case SIOCGIFSTATUS:
 391                 s = splimp();
 392                 ifs = (struct ifstat *)data;
 393                 len = strlen(ifs->ascii);
 394                 if (len < sizeof(ifs->ascii))
 395                         snprintf(ifs->ascii + len,
 396                                 sizeof(ifs->ascii) - len,
 397                                 "\tch %d dma %d\n",
 398                                         fwe->stream_ch, fwe->dma_ch);
 399                 splx(s);
 400                 break;
 401         default:
 402                 s = splimp();
 403                 error = ether_ioctl(ifp, cmd, data);
 404                 splx(s);
 405                 return (error);
 406         }
 407
 408         return (0);
 409 }
 410
 411 static void
 412 fwe_output_callback(struct fw_xfer *xfer)
 413 {
 414         struct fwe_softc *fwe;
 415         struct ifnet *ifp;
 416         int s;
 417
 418         fwe = (struct fwe_softc *)xfer->sc;
 419         ifp = &fwe->fwe_if;
 420         /* XXX error check */
 421         FWEDEBUG(ifp, "resp = %d\n", xfer->resp);
 422         if (xfer->resp != 0)
 423                 ifp->if_oerrors ++;
 424
 425         m_freem(xfer->mbuf);
 426         fw_xfer_unload(xfer);
 427
 428         s = splimp();
 429         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 430         splx(s);
 431
 432         /* for queue full */
 433         if (!ifq_is_empty(&ifp->if_snd))
 434                 fwe_start(ifp);
 435 }
 436
 437 static void
 438 fwe_start(struct ifnet *ifp)
 439 {
 440         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 441         int s;
 442
 443         FWEDEBUG(ifp, "starting\n");
 444
 445         if (fwe->dma_ch < 0) {
 446                 FWEDEBUG(ifp, "not ready\n");
 447
 448                 s = splimp();
 449                 ifq_purge(&ifp->if_snd);
 450                 splx(s);
 451
 452                 return;
 453         }
 454
 455         s = splimp();
 456         ifp->if_flags |= IFF_OACTIVE;
 457
 458         if (!ifq_is_empty(&ifp->if_snd))
 459                 fwe_as_output(fwe, ifp);
 460
 461         ifp->if_flags &= ~IFF_OACTIVE;
 462         splx(s);
 463 }
 464
 465 #define HDR_LEN 4
 466 #ifndef ETHER_ALIGN
 467 #define ETHER_ALIGN 2
 468 #endif
 469 /* Async. stream output */
 470 static void
 471 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
 472 {
 473         struct mbuf *m;
 474         struct fw_xfer *xfer;
 475         struct fw_xferq *xferq;
 476         struct fw_pkt *fp;
 477         int i = 0;
 478
 479         xfer = NULL;
 480         xferq = fwe->fd.fc->atq;
 481         while (xferq->queued < xferq->maxq - 1) {
 482                 xfer = STAILQ_FIRST(&fwe->xferlist);
 483                 if (xfer == NULL) {
 484                         if_printf(ifp, "lack of xfer\n");
 485                         return;
 486                 }
 487                 m = ifq_dequeue(&ifp->if_snd);
 488                 if (m == NULL)
 489                         break;
 490                 STAILQ_REMOVE_HEAD(&fwe->xferlist, link);
 491                 BPF_MTAP(ifp, m);
 492
 493                 /* keep ip packet alignment for alpha */
 494                 M_PREPEND(m, ETHER_ALIGN, MB_DONTWAIT);
 495                 fp = &xfer->send.hdr;
 496                 *(u_int32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr;
 497                 fp->mode.stream.len = m->m_pkthdr.len;
 498                 xfer->mbuf = m;
 499                 xfer->send.pay_len = m->m_pkthdr.len;
 500
 501                 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) {
 502                         /* error */
 503                         ifp->if_oerrors ++;
 504                         /* XXX set error code */
 505                         fwe_output_callback(xfer);
 506                 } else {
 507                         ifp->if_opackets ++;
 508                         i++;
 509                 }
 510         }
 511 #if 0
 512         if (i > 1)
 513                 if_printf(ifp, "%d queued\n", i);
 514 #endif
 515         if (i > 0)
 516                 xferq->start(fwe->fd.fc);
 517 }
 518
 519 /* Async. stream output */
 520 static void
 521 fwe_as_input(struct fw_xferq *xferq)
 522 {
 523         struct mbuf *m, *m0;
 524         struct ifnet *ifp;
 525         struct fwe_softc *fwe;
 526         struct fw_bulkxfer *sxfer;
 527         struct fw_pkt *fp;
 528         u_char *c;
 529
 530         fwe = (struct fwe_softc *)xferq->sc;
 531         ifp = &fwe->fwe_if;
 532         while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
 533                 STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
 534                 fp = mtod(sxfer->mbuf, struct fw_pkt *);
 535                 if (fwe->fd.fc->irx_post != NULL)
 536                         fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld);
 537                 m = sxfer->mbuf;
 538
 539                 /* insert new rbuf */
 540                 sxfer->mbuf = m0 = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
 541                 if (m0 != NULL) {
 542                         m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
 543                         STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
 544                 } else {
 545                         if_printf(ifp, "fwe_as_input: m_getcl failed\n");
 546                 }
 547
 548                 if (sxfer->resp != 0 || fp->mode.stream.len <
 549                     ETHER_ALIGN + sizeof(struct ether_header)) {
 550                         m_freem(m);
 551                         ifp->if_ierrors ++;
 552                         continue;
 553                 }
 554
 555                 m->m_data += HDR_LEN + ETHER_ALIGN;
 556                 c = mtod(m, char *);
 557                 m->m_len = m->m_pkthdr.len =
 558                                 fp->mode.stream.len - ETHER_ALIGN;
 559                 m->m_pkthdr.rcvif = ifp;
 560 #if 0
 561                 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n"
 562                          "%02x %02x %02x %02x %02x %02x\n"
 563                          "%02x %02x %02x %02x\n"
 564                          "%02x %02x %02x %02x\n"
 565                          "%02x %02x %02x %02x\n"
 566                          "%02x %02x %02x %02x\n",
 567                          c[0], c[1], c[2], c[3], c[4], c[5],
 568                          c[6], c[7], c[8], c[9], c[10], c[11],
 569                          c[12], c[13], c[14], c[15],
 570                          c[16], c[17], c[18], c[19],
 571                          c[20], c[21], c[22], c[23],
 572                          c[20], c[21], c[22], c[23]
 573                  );
 574 #endif
 575                 (*ifp->if_input)(ifp, m);
 576                 ifp->if_ipackets ++;
 577         }
 578         if (STAILQ_FIRST(&xferq->stfree) != NULL)
 579                 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch);
 580 }
 581
 582
 583 static devclass_t fwe_devclass;
 584
 585 static device_method_t fwe_methods[] = {
 586         /* device interface */
 587         DEVMETHOD(device_identify,      fwe_identify),
 588         DEVMETHOD(device_probe,         fwe_probe),
 589         DEVMETHOD(device_attach,        fwe_attach),
 590         DEVMETHOD(device_detach,        fwe_detach),
 591         { 0, 0 }
 592 };
 593
 594 static driver_t fwe_driver = {
 595         "fwe",
 596         fwe_methods,
 597         sizeof(struct fwe_softc),
 598 };
 599
 600
 601 DECLARE_DUMMY_MODULE(fwe);
 602 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
 603 MODULE_VERSION(fwe, 1);
 604 MODULE_DEPEND(fwe, firewire, 1, 1, 1);