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 1.18 2005/06/14 17:05:58 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 <sys/thread2.h>
  52 #include <machine/bus.h>
  53
  54 #include <net/bpf.h>
  55 #include <net/ethernet.h>
  56 #include <net/if.h>
  57 #include <net/if_arp.h>
  58 #ifdef __DragonFly__
  59 #include <net/ifq_var.h>
  60 #include <net/vlan/if_vlan_var.h>
  61 #include <bus/firewire/firewire.h>
  62 #include <bus/firewire/firewirereg.h>
  63 #include "if_fwevar.h"
  64 #else
  65 #include <net/if_vlan_var.h>
  66
  67 #include <dev/firewire/firewire.h>
  68 #include <dev/firewire/firewirereg.h>
  69 #include <dev/firewire/if_fwevar.h>
  70 #endif
  71
  72 #define FWEDEBUG        if (fwedebug) if_printf
  73 #define TX_MAX_QUEUE    (FWMAXQUEUE - 1)
  74
  75 /* network interface */
  76 static void fwe_start (struct ifnet *);
  77 static int fwe_ioctl (struct ifnet *, u_long, caddr_t, struct ucred *);
  78 static void fwe_init (void *);
  79
  80 static void fwe_output_callback (struct fw_xfer *);
  81 static void fwe_as_output (struct fwe_softc *, struct ifnet *);
  82 static void fwe_as_input (struct fw_xferq *);
  83
  84 static int fwedebug = 0;
  85 static int stream_ch = 1;
  86 static int tx_speed = 2;
  87 static int rx_queue_len = FWMAXQUEUE;
  88
  89 MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface");
  90 SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RW, &fwedebug, 0, "");
  91 SYSCTL_DECL(_hw_firewire);
  92 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0,
  93         "Ethernet emulation subsystem");
  94 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0,
  95         "Stream channel to use");
  96 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RW, &tx_speed, 0,
  97         "Transmission speed");
  98 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len,
  99         0, "Length of the receive queue");
 100
 101 TUNABLE_INT("hw.firewire.fwe.stream_ch", &stream_ch);
 102 TUNABLE_INT("hw.firewire.fwe.tx_speed", &tx_speed);
 103 TUNABLE_INT("hw.firewire.fwe.rx_queue_len", &rx_queue_len);
 104
 105 #ifdef DEVICE_POLLING
 106
 107 static void
 108 fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
 109 {
 110         struct fwe_softc *fwe;
 111         struct firewire_comm *fc;
 112
 113         fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 114         fc = fwe->fd.fc;
 115         switch(cmd) {
 116         case POLL_REGISTER:
 117                 /* disable interrupts */
 118                 fc->set_intr(fc, 0);
 119                 break;
 120         case POLL_DEREGISTER:
 121                 /* enable interrupts */
 122                 fc->set_intr(fc, 1);
 123                 break;
 124         default:
 125                 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
 126                 break;
 127         }
 128 }
 129
 130 #endif
 131
 132 static void
 133 fwe_identify(driver_t *driver, device_t parent)
 134 {
 135         BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent));
 136 }
 137
 138 static int
 139 fwe_probe(device_t dev)
 140 {
 141         device_t pa;
 142
 143         pa = device_get_parent(dev);
 144         if(device_get_unit(dev) != device_get_unit(pa)){
 145                 return(ENXIO);
 146         }
 147
 148         device_set_desc(dev, "Ethernet over FireWire");
 149         return (0);
 150 }
 151
 152 static int
 153 fwe_attach(device_t dev)
 154 {
 155         struct fwe_softc *fwe;
 156         struct ifnet *ifp;
 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         ether_ifattach(ifp, eaddr);
 209
 210         /* Tell the upper layer(s) we support long frames. */
 211         ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
 212
 213
 214         FWEDEBUG(ifp, "interface created\n");
 215         return 0;
 216 }
 217
 218 static void
 219 fwe_stop(struct fwe_softc *fwe)
 220 {
 221         struct firewire_comm *fc;
 222         struct fw_xferq *xferq;
 223         struct ifnet *ifp = &fwe->fwe_if;
 224         struct fw_xfer *xfer, *next;
 225         int i;
 226
 227         fc = fwe->fd.fc;
 228
 229         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
 230
 231         if (fwe->dma_ch >= 0) {
 232                 xferq = fc->ir[fwe->dma_ch];
 233
 234                 if (xferq->flag & FWXFERQ_RUNNING)
 235                         fc->irx_disable(fc, fwe->dma_ch);
 236                 xferq->flag &=
 237                         ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
 238                         FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
 239                 xferq->hand =  NULL;
 240
 241                 for (i = 0; i < xferq->bnchunk; i ++)
 242                         m_freem(xferq->bulkxfer[i].mbuf);
 243                 free(xferq->bulkxfer, M_FWE);
 244
 245                 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL;
 246                                         xfer = next) {
 247                         next = STAILQ_NEXT(xfer, link);
 248                         fw_xfer_free(xfer);
 249                 }
 250                 STAILQ_INIT(&fwe->xferlist);
 251
 252                 xferq->bulkxfer =  NULL;
 253                 fwe->dma_ch = -1;
 254         }
 255 }
 256
 257 static int
 258 fwe_detach(device_t dev)
 259 {
 260         struct fwe_softc *fwe = device_get_softc(dev);
 261
 262         crit_enter();
 263
 264         fwe_stop(fwe);
 265         ether_ifdetach(&fwe->fwe_if);
 266
 267         crit_exit();
 268         return 0;
 269 }
 270
 271 static void
 272 fwe_init(void *arg)
 273 {
 274         struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
 275         struct firewire_comm *fc;
 276         struct ifnet *ifp = &fwe->fwe_if;
 277         struct fw_xferq *xferq;
 278         struct fw_xfer *xfer;
 279         struct mbuf *m;
 280         int i;
 281
 282         FWEDEBUG(ifp, "initializing\n");
 283
 284         /* XXX keep promiscoud mode */
 285         ifp->if_flags |= IFF_PROMISC;
 286
 287         fc = fwe->fd.fc;
 288 #define START 0
 289         if (fwe->dma_ch < 0) {
 290                 for (i = START; i < fc->nisodma; i ++) {
 291                         xferq = fc->ir[i];
 292                         if ((xferq->flag & FWXFERQ_OPEN) == 0)
 293                                 goto found;
 294                 }
 295                 if_printf(ifp, "no free dma channel\n");
 296                 return;
 297 found:
 298                 fwe->dma_ch = i;
 299                 fwe->stream_ch = stream_ch;
 300                 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 301                 /* allocate DMA channel and init packet mode */
 302                 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF |
 303                                 FWXFERQ_HANDLER | FWXFERQ_STREAM;
 304                 xferq->flag &= ~0xff;
 305                 xferq->flag |= fwe->stream_ch & 0xff;
 306                 /* register fwe_input handler */
 307                 xferq->sc = (caddr_t) fwe;
 308                 xferq->hand = fwe_as_input;
 309                 xferq->bnchunk = rx_queue_len;
 310                 xferq->bnpacket = 1;
 311                 xferq->psize = MCLBYTES;
 312                 xferq->queued = 0;
 313                 xferq->buf = NULL;
 314                 xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
 315                         sizeof(struct fw_bulkxfer) * xferq->bnchunk,
 316                                                         M_FWE, M_WAITOK);
 317                 if (xferq->bulkxfer == NULL) {
 318                         if_printf(ifp, "malloc failed\n");
 319                         return;
 320                 }
 321                 STAILQ_INIT(&xferq->stvalid);
 322                 STAILQ_INIT(&xferq->stfree);
 323                 STAILQ_INIT(&xferq->stdma);
 324                 xferq->stproc = NULL;
 325                 for (i = 0; i < xferq->bnchunk; i ++) {
 326                         m = m_getcl(MB_WAIT, MT_DATA, M_PKTHDR);
 327                         xferq->bulkxfer[i].mbuf = m;
 328                         if (m != NULL) {
 329                                 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
 330                                 STAILQ_INSERT_TAIL(&xferq->stfree,
 331                                                 &xferq->bulkxfer[i], link);
 332                         } else {
 333                                 if_printf(ifp, "fwe_init: m_getcl failed\n");
 334                         }
 335                 }
 336                 STAILQ_INIT(&fwe->xferlist);
 337                 for (i = 0; i < TX_MAX_QUEUE; i++) {
 338                         xfer = fw_xfer_alloc(M_FWE);
 339                         if (xfer == NULL)
 340                                 break;
 341                         xfer->send.spd = tx_speed;
 342                         xfer->fc = fwe->fd.fc;
 343                         xfer->retry_req = fw_asybusy;
 344                         xfer->sc = (caddr_t)fwe;
 345                         xfer->act.hand = fwe_output_callback;
 346                         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 347                 }
 348         } else
 349                 xferq = fc->ir[fwe->dma_ch];
 350
 351
 352         /* start dma */
 353         if ((xferq->flag & FWXFERQ_RUNNING) == 0)
 354                 fc->irx_enable(fc, fwe->dma_ch);
 355
 356         ifp->if_flags |= IFF_RUNNING;
 357         ifp->if_flags &= ~IFF_OACTIVE;
 358 }
 359
 360
 361 static int
 362 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
 363 {
 364         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 365         struct ifstat *ifs = NULL;
 366         int error = 0, len;
 367
 368         crit_enter();
 369
 370         switch (cmd) {
 371         case SIOCSIFFLAGS:
 372                 if (ifp->if_flags & IFF_UP) {
 373                         if (!(ifp->if_flags & IFF_RUNNING))
 374                                 fwe_init(&fwe->eth_softc);
 375                 } else {
 376                         if (ifp->if_flags & IFF_RUNNING)
 377                                 fwe_stop(fwe);
 378                 }
 379                 /* XXX keep promiscoud mode */
 380                 ifp->if_flags |= IFF_PROMISC;
 381                 break;
 382         case SIOCADDMULTI:
 383         case SIOCDELMULTI:
 384                 break;
 385
 386         case SIOCGIFSTATUS:
 387                 ifs = (struct ifstat *)data;
 388                 len = strlen(ifs->ascii);
 389                 if (len < sizeof(ifs->ascii))
 390                         snprintf(ifs->ascii + len,
 391                                 sizeof(ifs->ascii) - len,
 392                                 "\tch %d dma %d\n",
 393                                         fwe->stream_ch, fwe->dma_ch);
 394                 break;
 395         default:
 396                 error = ether_ioctl(ifp, cmd, data);
 397                 break;
 398         }
 399
 400         crit_exit();
 401
 402         return (error);
 403 }
 404
 405 static void
 406 fwe_output_callback(struct fw_xfer *xfer)
 407 {
 408         struct fwe_softc *fwe;
 409         struct ifnet *ifp;
 410
 411         fwe = (struct fwe_softc *)xfer->sc;
 412         ifp = &fwe->fwe_if;
 413         /* XXX error check */
 414         FWEDEBUG(ifp, "resp = %d\n", xfer->resp);
 415         if (xfer->resp != 0)
 416                 ifp->if_oerrors ++;
 417
 418         m_freem(xfer->mbuf);
 419         fw_xfer_unload(xfer);
 420
 421         crit_enter();
 422
 423         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 424
 425         crit_exit();
 426
 427         /* for queue full */
 428         if (!ifq_is_empty(&ifp->if_snd))
 429                 fwe_start(ifp);
 430 }
 431
 432 static void
 433 fwe_start(struct ifnet *ifp)
 434 {
 435         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 436
 437         FWEDEBUG(ifp, "starting\n");
 438
 439         crit_enter();
 440
 441         if (fwe->dma_ch < 0) {
 442                 FWEDEBUG(ifp, "not ready\n");
 443
 444                 ifq_purge(&ifp->if_snd);
 445         } else {
 446                 ifp->if_flags |= IFF_OACTIVE;
 447
 448                 if (!ifq_is_empty(&ifp->if_snd))
 449                         fwe_as_output(fwe, ifp);
 450
 451                 ifp->if_flags &= ~IFF_OACTIVE;
 452         }
 453
 454         crit_exit();
 455 }
 456
 457 #define HDR_LEN 4
 458 #ifndef ETHER_ALIGN
 459 #define ETHER_ALIGN 2
 460 #endif
 461 /* Async. stream output */
 462 static void
 463 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
 464 {
 465         struct mbuf *m;
 466         struct fw_xfer *xfer;
 467         struct fw_xferq *xferq;
 468         struct fw_pkt *fp;
 469         int i = 0;
 470
 471         xfer = NULL;
 472         xferq = fwe->fd.fc->atq;
 473         while (xferq->queued < xferq->maxq - 1) {
 474                 xfer = STAILQ_FIRST(&fwe->xferlist);
 475                 if (xfer == NULL) {
 476                         if_printf(ifp, "lack of xfer\n");
 477                         return;
 478                 }
 479                 m = ifq_dequeue(&ifp->if_snd);
 480                 if (m == NULL)
 481                         break;
 482                 STAILQ_REMOVE_HEAD(&fwe->xferlist, link);
 483                 BPF_MTAP(ifp, m);
 484
 485                 /* keep ip packet alignment for alpha */
 486                 M_PREPEND(m, ETHER_ALIGN, MB_DONTWAIT);
 487                 fp = &xfer->send.hdr;
 488                 *(u_int32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr;
 489                 fp->mode.stream.len = m->m_pkthdr.len;
 490                 xfer->mbuf = m;
 491                 xfer->send.pay_len = m->m_pkthdr.len;
 492
 493                 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) {
 494                         /* error */
 495                         ifp->if_oerrors ++;
 496                         /* XXX set error code */
 497                         fwe_output_callback(xfer);
 498                 } else {
 499                         ifp->if_opackets ++;
 500                         i++;
 501                 }
 502         }
 503 #if 0
 504         if (i > 1)
 505                 if_printf(ifp, "%d queued\n", i);
 506 #endif
 507         if (i > 0)
 508                 xferq->start(fwe->fd.fc);
 509 }
 510
 511 /* Async. stream output */
 512 static void
 513 fwe_as_input(struct fw_xferq *xferq)
 514 {
 515         struct mbuf *m, *m0;
 516         struct ifnet *ifp;
 517         struct fwe_softc *fwe;
 518         struct fw_bulkxfer *sxfer;
 519         struct fw_pkt *fp;
 520         u_char *c;
 521
 522         fwe = (struct fwe_softc *)xferq->sc;
 523         ifp = &fwe->fwe_if;
 524         while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
 525                 STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
 526                 fp = mtod(sxfer->mbuf, struct fw_pkt *);
 527                 if (fwe->fd.fc->irx_post != NULL)
 528                         fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld);
 529                 m = sxfer->mbuf;
 530
 531                 /* insert new rbuf */
 532                 sxfer->mbuf = m0 = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
 533                 if (m0 != NULL) {
 534                         m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
 535                         STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
 536                 } else {
 537                         if_printf(ifp, "fwe_as_input: m_getcl failed\n");
 538                 }
 539
 540                 if (sxfer->resp != 0 || fp->mode.stream.len <
 541                     ETHER_ALIGN + sizeof(struct ether_header)) {
 542                         m_freem(m);
 543                         ifp->if_ierrors ++;
 544                         continue;
 545                 }
 546
 547                 m->m_data += HDR_LEN + ETHER_ALIGN;
 548                 c = mtod(m, char *);
 549                 m->m_len = m->m_pkthdr.len =
 550                                 fp->mode.stream.len - ETHER_ALIGN;
 551                 m->m_pkthdr.rcvif = ifp;
 552 #if 0
 553                 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n"
 554                          "%02x %02x %02x %02x %02x %02x\n"
 555                          "%02x %02x %02x %02x\n"
 556                          "%02x %02x %02x %02x\n"
 557                          "%02x %02x %02x %02x\n"
 558                          "%02x %02x %02x %02x\n",
 559                          c[0], c[1], c[2], c[3], c[4], c[5],
 560                          c[6], c[7], c[8], c[9], c[10], c[11],
 561                          c[12], c[13], c[14], c[15],
 562                          c[16], c[17], c[18], c[19],
 563                          c[20], c[21], c[22], c[23],
 564                          c[20], c[21], c[22], c[23]
 565                  );
 566 #endif
 567                 (*ifp->if_input)(ifp, m);
 568                 ifp->if_ipackets ++;
 569         }
 570         if (STAILQ_FIRST(&xferq->stfree) != NULL)
 571                 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch);
 572 }
 573
 574
 575 static devclass_t fwe_devclass;
 576
 577 static device_method_t fwe_methods[] = {
 578         /* device interface */
 579         DEVMETHOD(device_identify,      fwe_identify),
 580         DEVMETHOD(device_probe,         fwe_probe),
 581         DEVMETHOD(device_attach,        fwe_attach),
 582         DEVMETHOD(device_detach,        fwe_detach),
 583         { 0, 0 }
 584 };
 585
 586 static driver_t fwe_driver = {
 587         "fwe",
 588         fwe_methods,
 589         sizeof(struct fwe_softc),
 590 };
 591
 592
 593 DECLARE_DUMMY_MODULE(fwe);
 594 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
 595 MODULE_VERSION(fwe, 1);
 596 MODULE_DEPEND(fwe, firewire, 1, 1, 1);