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 * $FreeBSD$ 35 */ 36 37 #ifdef HAVE_KERNEL_OPTION_HEADERS 38 #include "opt_device_polling.h" 39 #include "opt_inet.h" 40 #endif 41 42 #include <sys/param.h> 43 #include <sys/kernel.h> 44 #include <sys/malloc.h> 45 #include <sys/mbuf.h> 46 #include <sys/socket.h> 47 #include <sys/sockio.h> 48 #include <sys/sysctl.h> 49 #include <sys/systm.h> 50 #include <sys/module.h> 51 #include <sys/bus.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_var.h> 58 #include <net/if_arp.h> 59 #include <net/if_types.h> 60 #include <net/if_vlan_var.h> 61 62 #include <dev/firewire/firewire.h> 63 #include <dev/firewire/firewirereg.h> 64 #include <dev/firewire/if_fwevar.h> 65 66 #define FWEDEBUG if (fwedebug) if_printf 67 #define TX_MAX_QUEUE (FWMAXQUEUE - 1) 68 69 /* network interface */ 70 static void fwe_start (struct ifnet *); 71 static int fwe_ioctl (struct ifnet *, u_long, caddr_t); 72 static void fwe_init (void *); 73 74 static void fwe_output_callback (struct fw_xfer *); 75 static void fwe_as_output (struct fwe_softc *, struct ifnet *); 76 static void fwe_as_input (struct fw_xferq *); 77 78 static int fwedebug = 0; 79 static int stream_ch = 1; 80 static int tx_speed = 2; 81 static int rx_queue_len = FWMAXQUEUE; 82 83 static MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface"); 84 SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RWTUN, &fwedebug, 0, ""); 85 SYSCTL_DECL(_hw_firewire); 86 static SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0, 87 "Ethernet emulation subsystem"); 88 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RWTUN, &stream_ch, 0, 89 "Stream channel to use"); 90 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RWTUN, &tx_speed, 0, 91 "Transmission speed"); 92 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RWTUN, &rx_queue_len, 93 0, "Length of the receive queue"); 94 95 #ifdef DEVICE_POLLING 96 static poll_handler_t fwe_poll; 97 98 static int 99 fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 100 { 101 struct fwe_softc *fwe; 102 struct firewire_comm *fc; 103 104 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 105 return (0); 106 107 fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 108 fc = fwe->fd.fc; 109 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 110 return (0); 111 } 112 #endif /* DEVICE_POLLING */ 113 114 static void 115 fwe_identify(driver_t *driver, device_t parent) 116 { 117 BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent)); 118 } 119 120 static int 121 fwe_probe(device_t dev) 122 { 123 device_t pa; 124 125 pa = device_get_parent(dev); 126 if (device_get_unit(dev) != device_get_unit(pa)) { 127 return (ENXIO); 128 } 129 130 device_set_desc(dev, "Ethernet over FireWire"); 131 return (0); 132 } 133 134 static int 135 fwe_attach(device_t dev) 136 { 137 struct fwe_softc *fwe; 138 struct ifnet *ifp; 139 int unit, s; 140 u_char eaddr[6]; 141 struct fw_eui64 *eui; 142 143 fwe = ((struct fwe_softc *)device_get_softc(dev)); 144 unit = device_get_unit(dev); 145 146 bzero(fwe, sizeof(struct fwe_softc)); 147 mtx_init(&fwe->mtx, "fwe", NULL, MTX_DEF); 148 /* XXX */ 149 fwe->stream_ch = stream_ch; 150 fwe->dma_ch = -1; 151 152 fwe->fd.fc = device_get_ivars(dev); 153 if (tx_speed < 0) 154 tx_speed = fwe->fd.fc->speed; 155 156 fwe->fd.dev = dev; 157 fwe->fd.post_explore = NULL; 158 fwe->eth_softc.fwe = fwe; 159 160 fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM; 161 fwe->pkt_hdr.mode.stream.sy = 0; 162 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 163 164 /* generate fake MAC address: first and last 3bytes from eui64 */ 165 #define LOCAL (0x02) 166 #define GROUP (0x01) 167 168 eui = &fwe->fd.fc->eui; 169 eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP; 170 eaddr[1] = FW_EUI64_BYTE(eui, 1); 171 eaddr[2] = FW_EUI64_BYTE(eui, 2); 172 eaddr[3] = FW_EUI64_BYTE(eui, 5); 173 eaddr[4] = FW_EUI64_BYTE(eui, 6); 174 eaddr[5] = FW_EUI64_BYTE(eui, 7); 175 printf("if_fwe%d: Fake Ethernet address: " 176 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit, 177 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]); 178 179 /* fill the rest and attach interface */ 180 ifp = fwe->eth_softc.ifp = if_alloc(IFT_ETHER); 181 if (ifp == NULL) { 182 device_printf(dev, "can not if_alloc()\n"); 183 return (ENOSPC); 184 } 185 ifp->if_softc = &fwe->eth_softc; 186 187 if_initname(ifp, device_get_name(dev), unit); 188 ifp->if_init = fwe_init; 189 ifp->if_start = fwe_start; 190 ifp->if_ioctl = fwe_ioctl; 191 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 192 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 193 194 s = splimp(); 195 ether_ifattach(ifp, eaddr); 196 splx(s); 197 198 /* Tell the upper layer(s) we support long frames. */ 199 ifp->if_hdrlen = sizeof(struct ether_vlan_header); 200 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_POLLING; 201 ifp->if_capenable |= IFCAP_VLAN_MTU; 202 203 FWEDEBUG(ifp, "interface created\n"); 204 return 0; 205 } 206 207 static void 208 fwe_stop(struct fwe_softc *fwe) 209 { 210 struct firewire_comm *fc; 211 struct fw_xferq *xferq; 212 struct ifnet *ifp = fwe->eth_softc.ifp; 213 struct fw_xfer *xfer, *next; 214 int i; 215 216 fc = fwe->fd.fc; 217 218 if (fwe->dma_ch >= 0) { 219 xferq = fc->ir[fwe->dma_ch]; 220 221 if (xferq->flag & FWXFERQ_RUNNING) 222 fc->irx_disable(fc, fwe->dma_ch); 223 xferq->flag &= 224 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 225 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 226 xferq->hand = NULL; 227 228 for (i = 0; i < xferq->bnchunk; i++) 229 m_freem(xferq->bulkxfer[i].mbuf); 230 free(xferq->bulkxfer, M_FWE); 231 232 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL; 233 xfer = next) { 234 next = STAILQ_NEXT(xfer, link); 235 fw_xfer_free(xfer); 236 } 237 STAILQ_INIT(&fwe->xferlist); 238 239 xferq->bulkxfer = NULL; 240 fwe->dma_ch = -1; 241 } 242 243 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 244 } 245 246 static int 247 fwe_detach(device_t dev) 248 { 249 struct fwe_softc *fwe; 250 struct ifnet *ifp; 251 int s; 252 253 fwe = device_get_softc(dev); 254 ifp = fwe->eth_softc.ifp; 255 256 #ifdef DEVICE_POLLING 257 if (ifp->if_capenable & IFCAP_POLLING) 258 ether_poll_deregister(ifp); 259 #endif 260 s = splimp(); 261 262 fwe_stop(fwe); 263 ether_ifdetach(ifp); 264 if_free(ifp); 265 266 splx(s); 267 mtx_destroy(&fwe->mtx); 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->eth_softc.ifp; 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 if (fwe->dma_ch < 0) { 289 fwe->dma_ch = fw_open_isodma(fc, /* tx */0); 290 if (fwe->dma_ch < 0) 291 return; 292 xferq = fc->ir[fwe->dma_ch]; 293 xferq->flag |= FWXFERQ_EXTBUF | 294 FWXFERQ_HANDLER | FWXFERQ_STREAM; 295 fwe->stream_ch = stream_ch; 296 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 297 xferq->flag &= ~0xff; 298 xferq->flag |= fwe->stream_ch & 0xff; 299 /* register fwe_input handler */ 300 xferq->sc = (caddr_t) fwe; 301 xferq->hand = fwe_as_input; 302 xferq->bnchunk = rx_queue_len; 303 xferq->bnpacket = 1; 304 xferq->psize = MCLBYTES; 305 xferq->queued = 0; 306 xferq->buf = NULL; 307 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 308 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 309 M_FWE, M_WAITOK); 310 if (xferq->bulkxfer == NULL) { 311 printf("if_fwe: malloc failed\n"); 312 return; 313 } 314 STAILQ_INIT(&xferq->stvalid); 315 STAILQ_INIT(&xferq->stfree); 316 STAILQ_INIT(&xferq->stdma); 317 xferq->stproc = NULL; 318 for (i = 0; i < xferq->bnchunk; i++) { 319 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 320 xferq->bulkxfer[i].mbuf = m; 321 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 322 STAILQ_INSERT_TAIL(&xferq->stfree, 323 &xferq->bulkxfer[i], link); 324 } 325 STAILQ_INIT(&fwe->xferlist); 326 for (i = 0; i < TX_MAX_QUEUE; i++) { 327 xfer = fw_xfer_alloc(M_FWE); 328 if (xfer == NULL) 329 break; 330 xfer->send.spd = tx_speed; 331 xfer->fc = fwe->fd.fc; 332 xfer->sc = (caddr_t)fwe; 333 xfer->hand = fwe_output_callback; 334 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 335 } 336 } else 337 xferq = fc->ir[fwe->dma_ch]; 338 339 340 /* start dma */ 341 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 342 fc->irx_enable(fc, fwe->dma_ch); 343 344 ifp->if_drv_flags |= IFF_DRV_RUNNING; 345 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 346 347 #if 0 348 /* attempt to start output */ 349 fwe_start(ifp); 350 #endif 351 } 352 353 354 static int 355 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 356 { 357 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 358 struct ifstat *ifs = NULL; 359 int s, error; 360 361 switch (cmd) { 362 case SIOCSIFFLAGS: 363 s = splimp(); 364 if (ifp->if_flags & IFF_UP) { 365 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 366 fwe_init(&fwe->eth_softc); 367 } else { 368 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 369 fwe_stop(fwe); 370 } 371 /* XXX keep promiscoud mode */ 372 ifp->if_flags |= IFF_PROMISC; 373 splx(s); 374 break; 375 case SIOCADDMULTI: 376 case SIOCDELMULTI: 377 break; 378 379 case SIOCGIFSTATUS: 380 s = splimp(); 381 ifs = (struct ifstat *)data; 382 snprintf(ifs->ascii, sizeof(ifs->ascii), 383 "\tch %d dma %d\n", fwe->stream_ch, fwe->dma_ch); 384 splx(s); 385 break; 386 case SIOCSIFCAP: 387 #ifdef DEVICE_POLLING 388 { 389 struct ifreq *ifr = (struct ifreq *) data; 390 struct firewire_comm *fc = fwe->fd.fc; 391 392 if (ifr->ifr_reqcap & IFCAP_POLLING && 393 !(ifp->if_capenable & IFCAP_POLLING)) { 394 error = ether_poll_register(fwe_poll, ifp); 395 if (error) 396 return (error); 397 /* Disable interrupts */ 398 fc->set_intr(fc, 0); 399 ifp->if_capenable |= IFCAP_POLLING; 400 ifp->if_capenable |= IFCAP_POLLING_NOCOUNT; 401 return (error); 402 } 403 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 404 ifp->if_capenable & IFCAP_POLLING) { 405 error = ether_poll_deregister(ifp); 406 /* Enable interrupts. */ 407 fc->set_intr(fc, 1); 408 ifp->if_capenable &= ~IFCAP_POLLING; 409 ifp->if_capenable &= ~IFCAP_POLLING_NOCOUNT; 410 return (error); 411 } 412 } 413 #endif /* DEVICE_POLLING */ 414 break; 415 default: 416 s = splimp(); 417 error = ether_ioctl(ifp, cmd, data); 418 splx(s); 419 return (error); 420 } 421 422 return (0); 423 } 424 425 static void 426 fwe_output_callback(struct fw_xfer *xfer) 427 { 428 struct fwe_softc *fwe; 429 struct ifnet *ifp; 430 int s; 431 432 fwe = (struct fwe_softc *)xfer->sc; 433 ifp = fwe->eth_softc.ifp; 434 /* XXX error check */ 435 FWEDEBUG(ifp, "resp = %d\n", xfer->resp); 436 if (xfer->resp != 0) 437 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 438 m_freem(xfer->mbuf); 439 fw_xfer_unload(xfer); 440 441 s = splimp(); 442 FWE_LOCK(fwe); 443 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 444 FWE_UNLOCK(fwe); 445 splx(s); 446 447 /* for queue full */ 448 if (ifp->if_snd.ifq_head != NULL) 449 fwe_start(ifp); 450 } 451 452 static void 453 fwe_start(struct ifnet *ifp) 454 { 455 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 456 int s; 457 458 FWEDEBUG(ifp, "starting\n"); 459 460 if (fwe->dma_ch < 0) { 461 struct mbuf *m = NULL; 462 463 FWEDEBUG(ifp, "not ready\n"); 464 465 s = splimp(); 466 do { 467 IF_DEQUEUE(&ifp->if_snd, m); 468 if (m != NULL) 469 m_freem(m); 470 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 471 } while (m != NULL); 472 splx(s); 473 474 return; 475 } 476 477 s = splimp(); 478 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 479 480 if (ifp->if_snd.ifq_len != 0) 481 fwe_as_output(fwe, ifp); 482 483 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 484 splx(s); 485 } 486 487 #define HDR_LEN 4 488 #ifndef ETHER_ALIGN 489 #define ETHER_ALIGN 2 490 #endif 491 /* Async. stream output */ 492 static void 493 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp) 494 { 495 struct mbuf *m; 496 struct fw_xfer *xfer; 497 struct fw_xferq *xferq; 498 struct fw_pkt *fp; 499 int i = 0; 500 501 xfer = NULL; 502 xferq = fwe->fd.fc->atq; 503 while ((xferq->queued < xferq->maxq - 1) && 504 (ifp->if_snd.ifq_head != NULL)) { 505 FWE_LOCK(fwe); 506 xfer = STAILQ_FIRST(&fwe->xferlist); 507 if (xfer == NULL) { 508 #if 0 509 printf("if_fwe: lack of xfer\n"); 510 #endif 511 FWE_UNLOCK(fwe); 512 break; 513 } 514 STAILQ_REMOVE_HEAD(&fwe->xferlist, link); 515 FWE_UNLOCK(fwe); 516 517 IF_DEQUEUE(&ifp->if_snd, m); 518 if (m == NULL) { 519 FWE_LOCK(fwe); 520 STAILQ_INSERT_HEAD(&fwe->xferlist, xfer, link); 521 FWE_UNLOCK(fwe); 522 break; 523 } 524 BPF_MTAP(ifp, m); 525 526 /* keep ip packet alignment for alpha */ 527 M_PREPEND(m, ETHER_ALIGN, M_NOWAIT); 528 fp = &xfer->send.hdr; 529 *(uint32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr; 530 fp->mode.stream.len = m->m_pkthdr.len; 531 xfer->mbuf = m; 532 xfer->send.pay_len = m->m_pkthdr.len; 533 534 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) { 535 /* error */ 536 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 537 /* XXX set error code */ 538 fwe_output_callback(xfer); 539 } else { 540 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 541 i++; 542 } 543 } 544 #if 0 545 if (i > 1) 546 printf("%d queued\n", i); 547 #endif 548 if (i > 0) 549 xferq->start(fwe->fd.fc); 550 } 551 552 /* Async. stream output */ 553 static void 554 fwe_as_input(struct fw_xferq *xferq) 555 { 556 struct mbuf *m, *m0; 557 struct ifnet *ifp; 558 struct fwe_softc *fwe; 559 struct fw_bulkxfer *sxfer; 560 struct fw_pkt *fp; 561 u_char *c; 562 563 fwe = (struct fwe_softc *)xferq->sc; 564 ifp = fwe->eth_softc.ifp; 565 566 /* We do not need a lock here because the bottom half is serialized */ 567 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 568 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 569 fp = mtod(sxfer->mbuf, struct fw_pkt *); 570 if (fwe->fd.fc->irx_post != NULL) 571 fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld); 572 m = sxfer->mbuf; 573 574 /* insert new rbuf */ 575 sxfer->mbuf = m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 576 if (m0 != NULL) { 577 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 578 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 579 } else 580 printf("%s: m_getcl failed\n", __FUNCTION__); 581 582 if (sxfer->resp != 0 || fp->mode.stream.len < 583 ETHER_ALIGN + sizeof(struct ether_header)) { 584 m_freem(m); 585 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 586 continue; 587 } 588 589 m->m_data += HDR_LEN + ETHER_ALIGN; 590 c = mtod(m, u_char *); 591 m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN; 592 m->m_pkthdr.rcvif = ifp; 593 #if 0 594 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n" 595 "%02x %02x %02x %02x %02x %02x\n" 596 "%02x %02x %02x %02x\n" 597 "%02x %02x %02x %02x\n" 598 "%02x %02x %02x %02x\n" 599 "%02x %02x %02x %02x\n", 600 c[0], c[1], c[2], c[3], c[4], c[5], 601 c[6], c[7], c[8], c[9], c[10], c[11], 602 c[12], c[13], c[14], c[15], 603 c[16], c[17], c[18], c[19], 604 c[20], c[21], c[22], c[23], 605 c[20], c[21], c[22], c[23] 606 ); 607 #endif 608 (*ifp->if_input)(ifp, m); 609 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 610 } 611 if (STAILQ_FIRST(&xferq->stfree) != NULL) 612 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch); 613 } 614 615 616 static devclass_t fwe_devclass; 617 618 static device_method_t fwe_methods[] = { 619 /* device interface */ 620 DEVMETHOD(device_identify, fwe_identify), 621 DEVMETHOD(device_probe, fwe_probe), 622 DEVMETHOD(device_attach, fwe_attach), 623 DEVMETHOD(device_detach, fwe_detach), 624 { 0, 0 } 625 }; 626 627 static driver_t fwe_driver = { 628 "fwe", 629 fwe_methods, 630 sizeof(struct fwe_softc), 631 }; 632 633 634 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0); 635 MODULE_VERSION(fwe, 1); 636 MODULE_DEPEND(fwe, firewire, 1, 1, 1); 637