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
fwe_npoll_compat(struct ifnet * ifp,void * arg __unused,int count)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
fwe_npoll(struct ifnet * ifp,struct ifpoll_info * info)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
fwe_probe(device_t dev)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
fwe_attach(device_t dev)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
fwe_stop(struct fwe_softc * fwe)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
fwe_detach(device_t dev)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
fwe_init(void * arg)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
fwe_ioctl(struct ifnet * ifp,u_long cmd,caddr_t data,struct ucred * cr)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
fwe_output_callback(struct fw_xfer * xfer)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
fwe_start(struct ifnet * ifp,struct ifaltq_subque * ifsq)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
fwe_as_output(struct fwe_softc * fwe,struct ifnet * ifp)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
fwe_as_input(struct fw_xferq * xferq)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