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 */ 36 37 #include "opt_inet.h" 38 #include "opt_ifpoll.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 52 #include <net/bpf.h> 53 #include <net/ethernet.h> 54 #include <net/if.h> 55 #include <net/if_arp.h> 56 #ifdef __DragonFly__ 57 #include <net/ifq_var.h> 58 #include <net/if_poll.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 *, struct ifaltq_subque *); 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 "Enable debug output"); 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 IFPOLL_ENABLE 106 107 static void 108 fwe_npoll_compat(struct ifnet *ifp, void *arg __unused, int count) 109 { 110 struct fwe_softc *fwe; 111 struct firewire_comm *fc; 112 int check_status = 0; 113 114 ASSERT_SERIALIZED(ifp->if_serializer); 115 116 fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 117 fc = fwe->fd.fc; 118 119 if (fwe->npoll.ifpc_stcount-- == 0) { 120 fwe->npoll.ifpc_stcount = fwe->npoll.ifpc_stfrac; 121 check_status = 1; 122 } 123 fc->poll(fc, check_status?0:1, count); 124 } 125 126 static void 127 fwe_npoll(struct ifnet *ifp, struct ifpoll_info *info) 128 { 129 struct fwe_softc *fwe; 130 struct firewire_comm *fc; 131 132 ASSERT_SERIALIZED(ifp->if_serializer); 133 134 fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 135 fc = fwe->fd.fc; 136 137 if (info != NULL) { 138 int cpuid = fwe->npoll.ifpc_cpuid; 139 140 info->ifpi_rx[cpuid].poll_func = fwe_npoll_compat; 141 info->ifpi_rx[cpuid].arg = NULL; 142 info->ifpi_rx[cpuid].serializer = ifp->if_serializer; 143 144 if (ifp->if_flags & IFF_RUNNING) { 145 /* disable interrupts */ 146 fc->set_intr(fc, 0); 147 fwe->npoll.ifpc_stcount = 0; 148 } 149 ifq_set_cpuid(&ifp->if_snd, cpuid); 150 } else { 151 if (ifp->if_flags & IFF_RUNNING) { 152 /* enable interrupts */ 153 fc->set_intr(fc, 1); 154 } 155 ifq_set_cpuid(&ifp->if_snd, 0 /* XXX */); 156 } 157 } 158 159 #endif /* IFPOLL_ENABLE */ 160 161 static int 162 fwe_probe(device_t dev) 163 { 164 device_t pa; 165 166 pa = device_get_parent(dev); 167 if(device_get_unit(dev) != device_get_unit(pa)){ 168 return(ENXIO); 169 } 170 171 device_set_desc(dev, "Ethernet over FireWire"); 172 return (0); 173 } 174 175 static int 176 fwe_attach(device_t dev) 177 { 178 struct fwe_softc *fwe; 179 struct ifnet *ifp; 180 uint8_t eaddr[ETHER_ADDR_LEN]; 181 struct fw_eui64 *eui; 182 183 fwe = ((struct fwe_softc *)device_get_softc(dev)); 184 185 /* XXX */ 186 fwe->stream_ch = stream_ch; 187 fwe->dma_ch = -1; 188 189 fwe->fd.fc = device_get_ivars(dev); 190 if (tx_speed < 0) 191 tx_speed = fwe->fd.fc->speed; 192 193 fwe->fd.dev = dev; 194 fwe->fd.post_explore = NULL; 195 fwe->eth_softc.fwe = fwe; 196 197 fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM; 198 fwe->pkt_hdr.mode.stream.sy = 0; 199 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 200 201 /* generate fake MAC address: first and last 3bytes from eui64 */ 202 #define LOCAL (0x02) 203 #define GROUP (0x01) 204 205 eui = &fwe->fd.fc->eui; 206 eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP; 207 eaddr[1] = FW_EUI64_BYTE(eui, 1); 208 eaddr[2] = FW_EUI64_BYTE(eui, 2); 209 eaddr[3] = FW_EUI64_BYTE(eui, 5); 210 eaddr[4] = FW_EUI64_BYTE(eui, 6); 211 eaddr[5] = FW_EUI64_BYTE(eui, 7); 212 213 /* fill the rest and attach interface */ 214 ifp = &fwe->fwe_if; 215 ifp->if_softc = &fwe->eth_softc; 216 217 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 218 ifp->if_init = fwe_init; 219 ifp->if_start = fwe_start; 220 ifp->if_ioctl = fwe_ioctl; 221 ifp->if_capabilities = IFCAP_VLAN_MTU; 222 #ifdef IFPOLL_ENABLE 223 ifp->if_npoll = fwe_npoll; 224 #endif 225 ifp->if_mtu = ETHERMTU; 226 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 227 ifq_set_maxlen(&ifp->if_snd, TX_MAX_QUEUE); 228 ifq_set_ready(&ifp->if_snd); 229 230 ether_ifattach(ifp, eaddr, NULL); 231 232 /* Tell the upper layer(s) we support long frames. */ 233 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 234 235 #ifdef IFPOLL_ENABLE 236 ifpoll_compat_setup(&fwe->npoll, NULL, NULL, device_get_unit(dev), 237 ifp->if_serializer); 238 #endif 239 240 FWEDEBUG(ifp, "interface created\n"); 241 return 0; 242 } 243 244 static void 245 fwe_stop(struct fwe_softc *fwe) 246 { 247 struct firewire_comm *fc; 248 struct fw_xferq *xferq; 249 struct ifnet *ifp = &fwe->fwe_if; 250 struct fw_xfer *xfer, *next; 251 int i; 252 253 fc = fwe->fd.fc; 254 255 ifp->if_flags &= ~IFF_RUNNING; 256 ifq_clr_oactive(&ifp->if_snd); 257 258 if (fwe->dma_ch >= 0) { 259 xferq = fc->ir[fwe->dma_ch]; 260 261 if (xferq->flag & FWXFERQ_RUNNING) 262 fc->irx_disable(fc, fwe->dma_ch); 263 xferq->flag &= 264 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 265 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 266 xferq->hand = NULL; 267 268 for (i = 0; i < xferq->bnchunk; i ++) 269 m_freem(xferq->bulkxfer[i].mbuf); 270 kfree(xferq->bulkxfer, M_FWE); 271 272 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL; 273 xfer = next) { 274 next = STAILQ_NEXT(xfer, link); 275 fw_xfer_free(xfer); 276 } 277 STAILQ_INIT(&fwe->xferlist); 278 279 xferq->bulkxfer = NULL; 280 fwe->dma_ch = -1; 281 } 282 } 283 284 static int 285 fwe_detach(device_t dev) 286 { 287 struct fwe_softc *fwe = device_get_softc(dev); 288 289 lwkt_serialize_enter(fwe->fwe_if.if_serializer); 290 fwe_stop(fwe); 291 lwkt_serialize_exit(fwe->fwe_if.if_serializer); 292 293 ether_ifdetach(&fwe->fwe_if); 294 return 0; 295 } 296 297 static void 298 fwe_init(void *arg) 299 { 300 struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe; 301 struct firewire_comm *fc; 302 struct ifnet *ifp = &fwe->fwe_if; 303 struct fw_xferq *xferq; 304 struct fw_xfer *xfer; 305 struct mbuf *m; 306 int i; 307 308 FWEDEBUG(ifp, "initializing\n"); 309 310 /* XXX keep promiscoud mode */ 311 ifp->if_flags |= IFF_PROMISC; 312 313 fc = fwe->fd.fc; 314 #define START 0 315 if (fwe->dma_ch < 0) { 316 for (i = START; i < fc->nisodma; i ++) { 317 xferq = fc->ir[i]; 318 if ((xferq->flag & FWXFERQ_OPEN) == 0) 319 goto found; 320 } 321 if_printf(ifp, "no free dma channel\n"); 322 return; 323 found: 324 fwe->dma_ch = i; 325 fwe->stream_ch = stream_ch; 326 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 327 /* allocate DMA channel and init packet mode */ 328 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF | 329 FWXFERQ_HANDLER | FWXFERQ_STREAM; 330 xferq->flag &= ~0xff; 331 xferq->flag |= fwe->stream_ch & 0xff; 332 /* register fwe_input handler */ 333 xferq->sc = (caddr_t) fwe; 334 xferq->hand = fwe_as_input; 335 xferq->bnchunk = rx_queue_len; 336 xferq->bnpacket = 1; 337 xferq->psize = MCLBYTES; 338 xferq->queued = 0; 339 xferq->buf = NULL; 340 xferq->bulkxfer = (struct fw_bulkxfer *) kmalloc( 341 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 342 M_FWE, M_WAITOK); 343 STAILQ_INIT(&xferq->stvalid); 344 STAILQ_INIT(&xferq->stfree); 345 STAILQ_INIT(&xferq->stdma); 346 xferq->stproc = NULL; 347 for (i = 0; i < xferq->bnchunk; i ++) { 348 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 349 xferq->bulkxfer[i].mbuf = m; 350 if (m != NULL) { 351 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 352 STAILQ_INSERT_TAIL(&xferq->stfree, 353 &xferq->bulkxfer[i], link); 354 } else { 355 if_printf(ifp, "fwe_init: m_getcl failed\n"); 356 } 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 #ifdef IFPOLL_ENABLE 374 /* Disable interrupt, if polling(4) is enabled */ 375 if (ifp->if_flags & IFF_NPOLLING) { 376 fc->set_intr(fc, 0); 377 fwe->npoll.ifpc_stcount = 0; 378 } else 379 #endif 380 fc->set_intr(fc, 1); 381 382 /* start dma */ 383 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 384 fc->irx_enable(fc, fwe->dma_ch); 385 386 ifp->if_flags |= IFF_RUNNING; 387 ifq_clr_oactive(&ifp->if_snd); 388 } 389 390 391 static int 392 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr) 393 { 394 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 395 struct ifstat *ifs = NULL; 396 int error = 0, len; 397 398 switch (cmd) { 399 case SIOCSIFFLAGS: 400 if (ifp->if_flags & IFF_UP) { 401 if (!(ifp->if_flags & IFF_RUNNING)) 402 fwe_init(&fwe->eth_softc); 403 } else { 404 if (ifp->if_flags & IFF_RUNNING) 405 fwe_stop(fwe); 406 } 407 /* XXX keep promiscoud mode */ 408 ifp->if_flags |= IFF_PROMISC; 409 break; 410 case SIOCADDMULTI: 411 case SIOCDELMULTI: 412 break; 413 414 case SIOCGIFSTATUS: 415 ifs = (struct ifstat *)data; 416 len = strlen(ifs->ascii); 417 if (len < sizeof(ifs->ascii)) 418 ksnprintf(ifs->ascii + len, 419 sizeof(ifs->ascii) - len, 420 "\tch %d dma %d\n", 421 fwe->stream_ch, fwe->dma_ch); 422 break; 423 default: 424 error = ether_ioctl(ifp, cmd, data); 425 break; 426 } 427 return (error); 428 } 429 430 static void 431 fwe_output_callback(struct fw_xfer *xfer) 432 { 433 struct fwe_softc *fwe; 434 struct ifnet *ifp; 435 436 fwe = (struct fwe_softc *)xfer->sc; 437 ifp = &fwe->fwe_if; 438 lwkt_serialize_enter(ifp->if_serializer); 439 /* XXX error check */ 440 FWEDEBUG(ifp, "resp = %d\n", xfer->resp); 441 if (xfer->resp != 0) 442 IFNET_STAT_INC(ifp, oerrors, 1); 443 444 m_freem(xfer->mbuf); 445 fw_xfer_unload(xfer); 446 447 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 448 449 /* for queue full */ 450 if (!ifq_is_empty(&ifp->if_snd)) 451 if_devstart(ifp); 452 lwkt_serialize_exit(ifp->if_serializer); 453 } 454 455 static void 456 fwe_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 457 { 458 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 459 460 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 461 FWEDEBUG(ifp, "starting\n"); 462 463 if (fwe->dma_ch < 0) { 464 FWEDEBUG(ifp, "not ready\n"); 465 466 ifq_purge(&ifp->if_snd); 467 } else { 468 ifq_set_oactive(&ifp->if_snd); 469 470 if (!ifq_is_empty(&ifp->if_snd)) 471 fwe_as_output(fwe, ifp); 472 473 ifq_clr_oactive(&ifp->if_snd); 474 } 475 } 476 477 #define HDR_LEN 4 478 #ifndef ETHER_ALIGN 479 #define ETHER_ALIGN 2 480 #endif 481 /* Async. stream output */ 482 static void 483 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp) 484 { 485 struct mbuf *m; 486 struct fw_xfer *xfer; 487 struct fw_xferq *xferq; 488 struct fw_pkt *fp; 489 int i = 0; 490 491 xfer = NULL; 492 xferq = fwe->fd.fc->atq; 493 while (xferq->queued < xferq->maxq - 1) { 494 xfer = STAILQ_FIRST(&fwe->xferlist); 495 if (xfer == NULL) { 496 if_printf(ifp, "lack of xfer\n"); 497 return; 498 } 499 m = ifq_dequeue(&ifp->if_snd); 500 if (m == NULL) 501 break; 502 STAILQ_REMOVE_HEAD(&fwe->xferlist, link); 503 BPF_MTAP(ifp, m); 504 505 /* keep ip packet alignment for alpha */ 506 M_PREPEND(m, ETHER_ALIGN, M_NOWAIT); 507 fp = &xfer->send.hdr; 508 *(u_int32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr; 509 fp->mode.stream.len = m->m_pkthdr.len; 510 xfer->mbuf = m; 511 xfer->send.pay_len = m->m_pkthdr.len; 512 513 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) { 514 /* error */ 515 IFNET_STAT_INC(ifp, oerrors, 1); 516 /* XXX set error code */ 517 fwe_output_callback(xfer); 518 } else { 519 IFNET_STAT_INC(ifp, opackets, 1); 520 i++; 521 } 522 } 523 #if 0 524 if (i > 1) 525 if_printf(ifp, "%d queued\n", i); 526 #endif 527 if (i > 0) 528 xferq->start(fwe->fd.fc); 529 } 530 531 /* Async. stream output */ 532 static void 533 fwe_as_input(struct fw_xferq *xferq) 534 { 535 struct mbuf *m, *m0; 536 struct ifnet *ifp; 537 struct fwe_softc *fwe; 538 struct fw_bulkxfer *sxfer; 539 struct fw_pkt *fp; 540 541 fwe = (struct fwe_softc *)xferq->sc; 542 ifp = &fwe->fwe_if; 543 lwkt_serialize_enter(ifp->if_serializer); 544 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 545 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 546 fp = mtod(sxfer->mbuf, struct fw_pkt *); 547 if (fwe->fd.fc->irx_post != NULL) 548 fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld); 549 m = sxfer->mbuf; 550 551 /* insert new rbuf */ 552 sxfer->mbuf = m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 553 if (m0 != NULL) { 554 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 555 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 556 } else { 557 if_printf(ifp, "fwe_as_input: m_getcl failed\n"); 558 } 559 560 if (sxfer->resp != 0 || fp->mode.stream.len < 561 ETHER_ALIGN + sizeof(struct ether_header)) { 562 m_freem(m); 563 IFNET_STAT_INC(ifp, ierrors, 1); 564 continue; 565 } 566 567 m->m_data += HDR_LEN + ETHER_ALIGN; 568 m->m_len = m->m_pkthdr.len = 569 fp->mode.stream.len - ETHER_ALIGN; 570 m->m_pkthdr.rcvif = ifp; 571 #if 0 572 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n" 573 "%02x %02x %02x %02x %02x %02x\n" 574 "%02x %02x %02x %02x\n" 575 "%02x %02x %02x %02x\n" 576 "%02x %02x %02x %02x\n" 577 "%02x %02x %02x %02x\n", 578 c[0], c[1], c[2], c[3], c[4], c[5], 579 c[6], c[7], c[8], c[9], c[10], c[11], 580 c[12], c[13], c[14], c[15], 581 c[16], c[17], c[18], c[19], 582 c[20], c[21], c[22], c[23], 583 c[20], c[21], c[22], c[23] 584 ); 585 #endif 586 ifp->if_input(ifp, m, NULL, -1); 587 IFNET_STAT_INC(ifp, ipackets, 1); 588 } 589 if (STAILQ_FIRST(&xferq->stfree) != NULL) 590 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch); 591 lwkt_serialize_exit(ifp->if_serializer); 592 } 593 594 595 static devclass_t fwe_devclass; 596 597 /* 598 * Because fwe is a static device that always exists under any attached 599 * firewire device, and not scanned by the firewire device, we need an 600 * identify function to install the device. 601 */ 602 static device_method_t fwe_methods[] = { 603 /* device interface */ 604 DEVMETHOD(device_identify, bus_generic_identify_sameunit), 605 DEVMETHOD(device_probe, fwe_probe), 606 DEVMETHOD(device_attach, fwe_attach), 607 DEVMETHOD(device_detach, fwe_detach), 608 DEVMETHOD_END 609 }; 610 611 static driver_t fwe_driver = { 612 "fwe", 613 fwe_methods, 614 sizeof(struct fwe_softc), 615 }; 616 617 618 DECLARE_DUMMY_MODULE(fwe); 619 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, NULL, NULL); 620 MODULE_VERSION(fwe, 1); 621 MODULE_DEPEND(fwe, firewire, 1, 1, 1); 622