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: releng/8.4/sys/dev/firewire/if_fwe.c 193096 2009-05-30 15:14:44Z attilio $
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_arp.h>
58 #include <net/if_types.h>
59 #ifdef __DragonFly__
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);
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 static poll_handler_t fwe_poll;
107
108 static int
109 fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
110 {
111 struct fwe_softc *fwe;
112 struct firewire_comm *fc;
113
114 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
115 return (0);
116
117 fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
118 fc = fwe->fd.fc;
119 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
120 return (0);
121 }
122 #endif /* DEVICE_POLLING */
123
124 static void
125 fwe_identify(driver_t *driver, device_t parent)
126 {
127 BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent));
128 }
129
130 static int
131 fwe_probe(device_t dev)
132 {
133 device_t pa;
134
135 pa = device_get_parent(dev);
136 if(device_get_unit(dev) != device_get_unit(pa)){
137 return(ENXIO);
138 }
139
140 device_set_desc(dev, "Ethernet over FireWire");
141 return (0);
142 }
143
144 static int
145 fwe_attach(device_t dev)
146 {
147 struct fwe_softc *fwe;
148 struct ifnet *ifp;
149 int unit, s;
150 #if defined(__DragonFly__) || __FreeBSD_version < 500000
151 u_char *eaddr;
152 #else
153 u_char eaddr[6];
154 #endif
155 struct fw_eui64 *eui;
156
157 fwe = ((struct fwe_softc *)device_get_softc(dev));
158 unit = device_get_unit(dev);
159
160 bzero(fwe, sizeof(struct fwe_softc));
161 mtx_init(&fwe->mtx, "fwe", NULL, MTX_DEF);
162 /* XXX */
163 fwe->stream_ch = stream_ch;
164 fwe->dma_ch = -1;
165
166 fwe->fd.fc = device_get_ivars(dev);
167 if (tx_speed < 0)
168 tx_speed = fwe->fd.fc->speed;
169
170 fwe->fd.dev = dev;
171 fwe->fd.post_explore = NULL;
172 fwe->eth_softc.fwe = fwe;
173
174 fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM;
175 fwe->pkt_hdr.mode.stream.sy = 0;
176 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
177
178 /* generate fake MAC address: first and last 3bytes from eui64 */
179 #define LOCAL (0x02)
180 #define GROUP (0x01)
181 #if defined(__DragonFly__) || __FreeBSD_version < 500000
182 eaddr = &IFP2ENADDR(fwe->eth_softc.ifp)[0];
183 #endif
184
185
186 eui = &fwe->fd.fc->eui;
187 eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP;
188 eaddr[1] = FW_EUI64_BYTE(eui, 1);
189 eaddr[2] = FW_EUI64_BYTE(eui, 2);
190 eaddr[3] = FW_EUI64_BYTE(eui, 5);
191 eaddr[4] = FW_EUI64_BYTE(eui, 6);
192 eaddr[5] = FW_EUI64_BYTE(eui, 7);
193 printf("if_fwe%d: Fake Ethernet address: "
194 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit,
195 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]);
196
197 /* fill the rest and attach interface */
198 ifp = fwe->eth_softc.ifp = if_alloc(IFT_ETHER);
199 if (ifp == NULL) {
200 device_printf(dev, "can not if_alloc()\n");
201 return (ENOSPC);
202 }
203 ifp->if_softc = &fwe->eth_softc;
204
205 #if __FreeBSD_version >= 501113 || defined(__DragonFly__)
206 if_initname(ifp, device_get_name(dev), unit);
207 #else
208 ifp->if_unit = unit;
209 ifp->if_name = "fwe";
210 #endif
211 ifp->if_init = fwe_init;
212 #if defined(__DragonFly__) || __FreeBSD_version < 500000
213 ifp->if_output = ether_output;
214 #endif
215 ifp->if_start = fwe_start;
216 ifp->if_ioctl = fwe_ioctl;
217 ifp->if_mtu = ETHERMTU;
218 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
219 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE;
220
221 s = splimp();
222 #if defined(__DragonFly__) || __FreeBSD_version < 500000
223 ether_ifattach(ifp, 1);
224 #else
225 ether_ifattach(ifp, eaddr);
226 #endif
227 splx(s);
228
229 /* Tell the upper layer(s) we support long frames. */
230 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
231 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
232 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_POLLING;
233 ifp->if_capenable |= IFCAP_VLAN_MTU;
234 #endif
235
236
237 FWEDEBUG(ifp, "interface created\n");
238 return 0;
239 }
240
241 static void
242 fwe_stop(struct fwe_softc *fwe)
243 {
244 struct firewire_comm *fc;
245 struct fw_xferq *xferq;
246 struct ifnet *ifp = fwe->eth_softc.ifp;
247 struct fw_xfer *xfer, *next;
248 int i;
249
250 fc = fwe->fd.fc;
251
252 if (fwe->dma_ch >= 0) {
253 xferq = fc->ir[fwe->dma_ch];
254
255 if (xferq->flag & FWXFERQ_RUNNING)
256 fc->irx_disable(fc, fwe->dma_ch);
257 xferq->flag &=
258 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
259 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
260 xferq->hand = NULL;
261
262 for (i = 0; i < xferq->bnchunk; i ++)
263 m_freem(xferq->bulkxfer[i].mbuf);
264 free(xferq->bulkxfer, M_FWE);
265
266 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL;
267 xfer = next) {
268 next = STAILQ_NEXT(xfer, link);
269 fw_xfer_free(xfer);
270 }
271 STAILQ_INIT(&fwe->xferlist);
272
273 xferq->bulkxfer = NULL;
274 fwe->dma_ch = -1;
275 }
276
277 #if defined(__FreeBSD__)
278 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
279 #else
280 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
281 #endif
282 }
283
284 static int
285 fwe_detach(device_t dev)
286 {
287 struct fwe_softc *fwe;
288 struct ifnet *ifp;
289 int s;
290
291 fwe = device_get_softc(dev);
292 ifp = fwe->eth_softc.ifp;
293
294 #ifdef DEVICE_POLLING
295 if (ifp->if_capenable & IFCAP_POLLING)
296 ether_poll_deregister(ifp);
297 #endif
298 s = splimp();
299
300 fwe_stop(fwe);
301 #if defined(__DragonFly__) || __FreeBSD_version < 500000
302 ether_ifdetach(ifp, 1);
303 #else
304 ether_ifdetach(ifp);
305 if_free(ifp);
306 #endif
307
308 splx(s);
309 mtx_destroy(&fwe->mtx);
310 return 0;
311 }
312
313 static void
314 fwe_init(void *arg)
315 {
316 struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
317 struct firewire_comm *fc;
318 struct ifnet *ifp = fwe->eth_softc.ifp;
319 struct fw_xferq *xferq;
320 struct fw_xfer *xfer;
321 struct mbuf *m;
322 int i;
323
324 FWEDEBUG(ifp, "initializing\n");
325
326 /* XXX keep promiscoud mode */
327 ifp->if_flags |= IFF_PROMISC;
328
329 fc = fwe->fd.fc;
330 if (fwe->dma_ch < 0) {
331 fwe->dma_ch = fw_open_isodma(fc, /* tx */0);
332 if (fwe->dma_ch < 0)
333 return;
334 xferq = fc->ir[fwe->dma_ch];
335 xferq->flag |= FWXFERQ_EXTBUF |
336 FWXFERQ_HANDLER | FWXFERQ_STREAM;
337 fwe->stream_ch = stream_ch;
338 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
339 xferq->flag &= ~0xff;
340 xferq->flag |= fwe->stream_ch & 0xff;
341 /* register fwe_input handler */
342 xferq->sc = (caddr_t) fwe;
343 xferq->hand = fwe_as_input;
344 xferq->bnchunk = rx_queue_len;
345 xferq->bnpacket = 1;
346 xferq->psize = MCLBYTES;
347 xferq->queued = 0;
348 xferq->buf = NULL;
349 xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
350 sizeof(struct fw_bulkxfer) * xferq->bnchunk,
351 M_FWE, M_WAITOK);
352 if (xferq->bulkxfer == NULL) {
353 printf("if_fwe: malloc failed\n");
354 return;
355 }
356 STAILQ_INIT(&xferq->stvalid);
357 STAILQ_INIT(&xferq->stfree);
358 STAILQ_INIT(&xferq->stdma);
359 xferq->stproc = NULL;
360 for (i = 0; i < xferq->bnchunk; i ++) {
361 m = m_getcl(M_WAIT, MT_DATA, M_PKTHDR);
362 xferq->bulkxfer[i].mbuf = m;
363 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
364 STAILQ_INSERT_TAIL(&xferq->stfree,
365 &xferq->bulkxfer[i], link);
366 }
367 STAILQ_INIT(&fwe->xferlist);
368 for (i = 0; i < TX_MAX_QUEUE; i++) {
369 xfer = fw_xfer_alloc(M_FWE);
370 if (xfer == NULL)
371 break;
372 xfer->send.spd = tx_speed;
373 xfer->fc = fwe->fd.fc;
374 xfer->sc = (caddr_t)fwe;
375 xfer->hand = fwe_output_callback;
376 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
377 }
378 } else
379 xferq = fc->ir[fwe->dma_ch];
380
381
382 /* start dma */
383 if ((xferq->flag & FWXFERQ_RUNNING) == 0)
384 fc->irx_enable(fc, fwe->dma_ch);
385
386 #if defined(__FreeBSD__)
387 ifp->if_drv_flags |= IFF_DRV_RUNNING;
388 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
389 #else
390 ifp->if_flags |= IFF_RUNNING;
391 ifp->if_flags &= ~IFF_OACTIVE;
392 #endif
393
394 #if 0
395 /* attempt to start output */
396 fwe_start(ifp);
397 #endif
398 }
399
400
401 static int
402 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
403 {
404 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
405 struct ifstat *ifs = NULL;
406 int s, error, len;
407
408 switch (cmd) {
409 case SIOCSIFFLAGS:
410 s = splimp();
411 if (ifp->if_flags & IFF_UP) {
412 #if defined(__FreeBSD__)
413 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
414 #else
415 if (!(ifp->if_flags & IFF_RUNNING))
416 #endif
417 fwe_init(&fwe->eth_softc);
418 } else {
419 #if defined(__FreeBSD__)
420 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
421 #else
422 if (ifp->if_flags & IFF_RUNNING)
423 #endif
424 fwe_stop(fwe);
425 }
426 /* XXX keep promiscoud mode */
427 ifp->if_flags |= IFF_PROMISC;
428 splx(s);
429 break;
430 case SIOCADDMULTI:
431 case SIOCDELMULTI:
432 break;
433
434 case SIOCGIFSTATUS:
435 s = splimp();
436 ifs = (struct ifstat *)data;
437 len = strlen(ifs->ascii);
438 if (len < sizeof(ifs->ascii))
439 snprintf(ifs->ascii + len,
440 sizeof(ifs->ascii) - len,
441 "\tch %d dma %d\n",
442 fwe->stream_ch, fwe->dma_ch);
443 splx(s);
444 break;
445 case SIOCSIFCAP:
446 #ifdef DEVICE_POLLING
447 {
448 struct ifreq *ifr = (struct ifreq *) data;
449 struct firewire_comm *fc = fwe->fd.fc;
450
451 if (ifr->ifr_reqcap & IFCAP_POLLING &&
452 !(ifp->if_capenable & IFCAP_POLLING)) {
453 error = ether_poll_register(fwe_poll, ifp);
454 if (error)
455 return(error);
456 /* Disable interrupts */
457 fc->set_intr(fc, 0);
458 ifp->if_capenable |= IFCAP_POLLING;
459 ifp->if_capenable |= IFCAP_POLLING_NOCOUNT;
460 return (error);
461 }
462 if (!(ifr->ifr_reqcap & IFCAP_POLLING) &&
463 ifp->if_capenable & IFCAP_POLLING) {
464 error = ether_poll_deregister(ifp);
465 /* Enable interrupts. */
466 fc->set_intr(fc, 1);
467 ifp->if_capenable &= ~IFCAP_POLLING;
468 ifp->if_capenable &= ~IFCAP_POLLING_NOCOUNT;
469 return (error);
470 }
471 }
472 #endif /* DEVICE_POLLING */
473 break;
474 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
475 default:
476 #else
477 case SIOCSIFADDR:
478 case SIOCGIFADDR:
479 case SIOCSIFMTU:
480 #endif
481 s = splimp();
482 error = ether_ioctl(ifp, cmd, data);
483 splx(s);
484 return (error);
485 #if defined(__DragonFly__) || __FreeBSD_version < 500000
486 default:
487 return (EINVAL);
488 #endif
489 }
490
491 return (0);
492 }
493
494 static void
495 fwe_output_callback(struct fw_xfer *xfer)
496 {
497 struct fwe_softc *fwe;
498 struct ifnet *ifp;
499 int s;
500
501 fwe = (struct fwe_softc *)xfer->sc;
502 ifp = fwe->eth_softc.ifp;
503 /* XXX error check */
504 FWEDEBUG(ifp, "resp = %d\n", xfer->resp);
505 if (xfer->resp != 0)
506 ifp->if_oerrors ++;
507
508 m_freem(xfer->mbuf);
509 fw_xfer_unload(xfer);
510
511 s = splimp();
512 FWE_LOCK(fwe);
513 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
514 FWE_UNLOCK(fwe);
515 splx(s);
516
517 /* for queue full */
518 if (ifp->if_snd.ifq_head != NULL)
519 fwe_start(ifp);
520 }
521
522 static void
523 fwe_start(struct ifnet *ifp)
524 {
525 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
526 int s;
527
528 FWEDEBUG(ifp, "starting\n");
529
530 if (fwe->dma_ch < 0) {
531 struct mbuf *m = NULL;
532
533 FWEDEBUG(ifp, "not ready\n");
534
535 s = splimp();
536 do {
537 IF_DEQUEUE(&ifp->if_snd, m);
538 if (m != NULL)
539 m_freem(m);
540 ifp->if_oerrors ++;
541 } while (m != NULL);
542 splx(s);
543
544 return;
545 }
546
547 s = splimp();
548 #if defined(__FreeBSD__)
549 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
550 #else
551 ifp->if_flags |= IFF_OACTIVE;
552 #endif
553
554 if (ifp->if_snd.ifq_len != 0)
555 fwe_as_output(fwe, ifp);
556
557 #if defined(__FreeBSD__)
558 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
559 #else
560 ifp->if_flags &= ~IFF_OACTIVE;
561 #endif
562 splx(s);
563 }
564
565 #define HDR_LEN 4
566 #ifndef ETHER_ALIGN
567 #define ETHER_ALIGN 2
568 #endif
569 /* Async. stream output */
570 static void
571 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
572 {
573 struct mbuf *m;
574 struct fw_xfer *xfer;
575 struct fw_xferq *xferq;
576 struct fw_pkt *fp;
577 int i = 0;
578
579 xfer = NULL;
580 xferq = fwe->fd.fc->atq;
581 while ((xferq->queued < xferq->maxq - 1) &&
582 (ifp->if_snd.ifq_head != NULL)) {
583 FWE_LOCK(fwe);
584 xfer = STAILQ_FIRST(&fwe->xferlist);
585 if (xfer == NULL) {
586 #if 0
587 printf("if_fwe: lack of xfer\n");
588 #endif
589 FWE_UNLOCK(fwe);
590 break;
591 }
592 STAILQ_REMOVE_HEAD(&fwe->xferlist, link);
593 FWE_UNLOCK(fwe);
594
595 IF_DEQUEUE(&ifp->if_snd, m);
596 if (m == NULL) {
597 FWE_LOCK(fwe);
598 STAILQ_INSERT_HEAD(&fwe->xferlist, xfer, link);
599 FWE_UNLOCK(fwe);
600 break;
601 }
602 #if defined(__DragonFly__) || __FreeBSD_version < 500000
603 if (ifp->if_bpf != NULL)
604 bpf_mtap(ifp, m);
605 #else
606 BPF_MTAP(ifp, m);
607 #endif
608
609 /* keep ip packet alignment for alpha */
610 M_PREPEND(m, ETHER_ALIGN, M_DONTWAIT);
611 fp = &xfer->send.hdr;
612 *(uint32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr;
613 fp->mode.stream.len = m->m_pkthdr.len;
614 xfer->mbuf = m;
615 xfer->send.pay_len = m->m_pkthdr.len;
616
617 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) {
618 /* error */
619 ifp->if_oerrors ++;
620 /* XXX set error code */
621 fwe_output_callback(xfer);
622 } else {
623 ifp->if_opackets ++;
624 i++;
625 }
626 }
627 #if 0
628 if (i > 1)
629 printf("%d queued\n", i);
630 #endif
631 if (i > 0)
632 xferq->start(fwe->fd.fc);
633 }
634
635 /* Async. stream output */
636 static void
637 fwe_as_input(struct fw_xferq *xferq)
638 {
639 struct mbuf *m, *m0;
640 struct ifnet *ifp;
641 struct fwe_softc *fwe;
642 struct fw_bulkxfer *sxfer;
643 struct fw_pkt *fp;
644 u_char *c;
645 #if defined(__DragonFly__) || __FreeBSD_version < 500000
646 struct ether_header *eh;
647 #endif
648
649 fwe = (struct fwe_softc *)xferq->sc;
650 ifp = fwe->eth_softc.ifp;
651
652 /* We do not need a lock here because the bottom half is serialized */
653 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
654 STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
655 fp = mtod(sxfer->mbuf, struct fw_pkt *);
656 if (fwe->fd.fc->irx_post != NULL)
657 fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld);
658 m = sxfer->mbuf;
659
660 /* insert new rbuf */
661 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
662 if (m0 != NULL) {
663 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
664 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
665 } else
666 printf("%s: m_getcl failed\n", __FUNCTION__);
667
668 if (sxfer->resp != 0 || fp->mode.stream.len <
669 ETHER_ALIGN + sizeof(struct ether_header)) {
670 m_freem(m);
671 ifp->if_ierrors ++;
672 continue;
673 }
674
675 m->m_data += HDR_LEN + ETHER_ALIGN;
676 c = mtod(m, u_char *);
677 #if defined(__DragonFly__) || __FreeBSD_version < 500000
678 eh = (struct ether_header *)c;
679 m->m_data += sizeof(struct ether_header);
680 m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN
681 - sizeof(struct ether_header);
682 #else
683 m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN;
684 #endif
685 m->m_pkthdr.rcvif = ifp;
686 #if 0
687 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n"
688 "%02x %02x %02x %02x %02x %02x\n"
689 "%02x %02x %02x %02x\n"
690 "%02x %02x %02x %02x\n"
691 "%02x %02x %02x %02x\n"
692 "%02x %02x %02x %02x\n",
693 c[0], c[1], c[2], c[3], c[4], c[5],
694 c[6], c[7], c[8], c[9], c[10], c[11],
695 c[12], c[13], c[14], c[15],
696 c[16], c[17], c[18], c[19],
697 c[20], c[21], c[22], c[23],
698 c[20], c[21], c[22], c[23]
699 );
700 #endif
701 #if defined(__DragonFly__) || __FreeBSD_version < 500000
702 ether_input(ifp, eh, m);
703 #else
704 (*ifp->if_input)(ifp, m);
705 #endif
706 ifp->if_ipackets ++;
707 }
708 if (STAILQ_FIRST(&xferq->stfree) != NULL)
709 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch);
710 }
711
712
713 static devclass_t fwe_devclass;
714
715 static device_method_t fwe_methods[] = {
716 /* device interface */
717 DEVMETHOD(device_identify, fwe_identify),
718 DEVMETHOD(device_probe, fwe_probe),
719 DEVMETHOD(device_attach, fwe_attach),
720 DEVMETHOD(device_detach, fwe_detach),
721 { 0, 0 }
722 };
723
724 static driver_t fwe_driver = {
725 "fwe",
726 fwe_methods,
727 sizeof(struct fwe_softc),
728 };
729
730
731 #ifdef __DragonFly__
732 DECLARE_DUMMY_MODULE(fwe);
733 #endif
734 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
735 MODULE_VERSION(fwe, 1);
736 MODULE_DEPEND(fwe, firewire, 1, 1, 1);
Cache object: b90c5a22372e0be09970cdcbb5378297
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