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 1.14 2005/02/18 23:10:27 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 <machine/bus.h>
  52
  53 #include <net/bpf.h>
  54 #include <net/ethernet.h>
  55 #include <net/if.h>
  56 #include <net/if_arp.h>
  57 #ifdef __DragonFly__
  58 #include <net/ifq_var.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 *);
  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 SYSCTL_DECL(_hw_firewire);
  91 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0,
  92         "Ethernet emulation subsystem");
  93 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0,
  94         "Stream channel to use");
  95 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RW, &tx_speed, 0,
  96         "Transmission speed");
  97 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len,
  98         0, "Length of the receive queue");
  99
 100 TUNABLE_INT("hw.firewire.fwe.stream_ch", &stream_ch);
 101 TUNABLE_INT("hw.firewire.fwe.tx_speed", &tx_speed);
 102 TUNABLE_INT("hw.firewire.fwe.rx_queue_len", &rx_queue_len);
 103
 104 #ifdef DEVICE_POLLING
 105 #define FWE_POLL_REGISTER(func, fwe, ifp)                       \
 106         if (ether_poll_register(func, ifp)) {                   \
 107                 struct firewire_comm *fc = (fwe)->fd.fc;        \
 108                 fc->set_intr(fc, 0);                            \
 109         }
 110
 111 #define FWE_POLL_DEREGISTER(fwe, ifp)                           \
 112         do {                                                    \
 113                 struct firewire_comm *fc = (fwe)->fd.fc;        \
 114                 ether_poll_deregister(ifp);                     \
 115                 fc->set_intr(fc, 1);                            \
 116         } while(0)                                              \
 117
 118 static poll_handler_t fwe_poll;
 119
 120 static void
 121 fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
 122 {
 123         struct fwe_softc *fwe;
 124         struct firewire_comm *fc;
 125
 126         fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 127         fc = fwe->fd.fc;
 128         if (cmd == POLL_DEREGISTER) {
 129                 /* enable interrupts */
 130                 fc->set_intr(fc, 1);
 131                 return;
 132         }
 133         fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
 134 }
 135 #else
 136 #define FWE_POLL_REGISTER(func, fwe, ifp)
 137 #define FWE_POLL_DEREGISTER(fwe, ifp)
 138 #endif
 139 static void
 140 fwe_identify(driver_t *driver, device_t parent)
 141 {
 142         BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent));
 143 }
 144
 145 static int
 146 fwe_probe(device_t dev)
 147 {
 148         device_t pa;
 149
 150         pa = device_get_parent(dev);
 151         if(device_get_unit(dev) != device_get_unit(pa)){
 152                 return(ENXIO);
 153         }
 154
 155         device_set_desc(dev, "Ethernet over FireWire");
 156         return (0);
 157 }
 158
 159 static int
 160 fwe_attach(device_t dev)
 161 {
 162         struct fwe_softc *fwe;
 163         struct ifnet *ifp;
 164         int unit, s;
 165         u_char *eaddr;
 166         struct fw_eui64 *eui;
 167
 168         fwe = ((struct fwe_softc *)device_get_softc(dev));
 169         unit = device_get_unit(dev);
 170
 171         bzero(fwe, sizeof(struct fwe_softc));
 172         /* XXX */
 173         fwe->stream_ch = stream_ch;
 174         fwe->dma_ch = -1;
 175
 176         fwe->fd.fc = device_get_ivars(dev);
 177         if (tx_speed < 0)
 178                 tx_speed = fwe->fd.fc->speed;
 179
 180         fwe->fd.dev = dev;
 181         fwe->fd.post_explore = NULL;
 182         fwe->eth_softc.fwe = fwe;
 183
 184         fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM;
 185         fwe->pkt_hdr.mode.stream.sy = 0;
 186         fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 187
 188         /* generate fake MAC address: first and last 3bytes from eui64 */
 189 #define LOCAL (0x02)
 190 #define GROUP (0x01)
 191         eaddr = &fwe->eth_softc.arpcom.ac_enaddr[0];
 192
 193         eui = &fwe->fd.fc->eui;
 194         eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP;
 195         eaddr[1] = FW_EUI64_BYTE(eui, 1);
 196         eaddr[2] = FW_EUI64_BYTE(eui, 2);
 197         eaddr[3] = FW_EUI64_BYTE(eui, 5);
 198         eaddr[4] = FW_EUI64_BYTE(eui, 6);
 199         eaddr[5] = FW_EUI64_BYTE(eui, 7);
 200         printf("if_fwe%d: Fake Ethernet address: "
 201                 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit,
 202                 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]);
 203
 204         /* fill the rest and attach interface */
 205         ifp = &fwe->fwe_if;
 206         ifp->if_softc = &fwe->eth_softc;
 207
 208 #if __FreeBSD_version >= 501113 || defined(__DragonFly__)
 209         if_initname(ifp, device_get_name(dev), unit);
 210 #else
 211         ifp->if_unit = unit;
 212         ifp->if_name = "fwe";
 213 #endif
 214         ifp->if_init = fwe_init;
 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         ifq_set_maxlen(&ifp->if_snd, TX_MAX_QUEUE);
 220         ifq_set_ready(&ifp->if_snd);
 221
 222         s = splimp();
 223         ether_ifattach(ifp, eaddr);
 224         splx(s);
 225
 226         /* Tell the upper layer(s) we support long frames. */
 227         ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
 228 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 229         ifp->if_capabilities |= IFCAP_VLAN_MTU;
 230 #endif
 231
 232
 233         FWEDEBUG(ifp, "interface created\n");
 234         return 0;
 235 }
 236
 237 static void
 238 fwe_stop(struct fwe_softc *fwe)
 239 {
 240         struct firewire_comm *fc;
 241         struct fw_xferq *xferq;
 242         struct ifnet *ifp = &fwe->fwe_if;
 243         struct fw_xfer *xfer, *next;
 244         int i;
 245
 246         fc = fwe->fd.fc;
 247
 248         FWE_POLL_DEREGISTER(fwe, ifp);
 249
 250         if (fwe->dma_ch >= 0) {
 251                 xferq = fc->ir[fwe->dma_ch];
 252
 253                 if (xferq->flag & FWXFERQ_RUNNING)
 254                         fc->irx_disable(fc, fwe->dma_ch);
 255                 xferq->flag &=
 256                         ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
 257                         FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
 258                 xferq->hand =  NULL;
 259
 260                 for (i = 0; i < xferq->bnchunk; i ++)
 261                         m_freem(xferq->bulkxfer[i].mbuf);
 262                 free(xferq->bulkxfer, M_FWE);
 263
 264                 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL;
 265                                         xfer = next) {
 266                         next = STAILQ_NEXT(xfer, link);
 267                         fw_xfer_free(xfer);
 268                 }
 269                 STAILQ_INIT(&fwe->xferlist);
 270
 271                 xferq->bulkxfer =  NULL;
 272                 fwe->dma_ch = -1;
 273         }
 274
 275         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
 276 }
 277
 278 static int
 279 fwe_detach(device_t dev)
 280 {
 281         struct fwe_softc *fwe;
 282         int s;
 283
 284         fwe = (struct fwe_softc *)device_get_softc(dev);
 285         s = splimp();
 286
 287         fwe_stop(fwe);
 288         ether_ifdetach(&fwe->fwe_if);
 289
 290         splx(s);
 291         return 0;
 292 }
 293
 294 static void
 295 fwe_init(void *arg)
 296 {
 297         struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
 298         struct firewire_comm *fc;
 299         struct ifnet *ifp = &fwe->fwe_if;
 300         struct fw_xferq *xferq;
 301         struct fw_xfer *xfer;
 302         struct mbuf *m;
 303         int i;
 304
 305         FWEDEBUG(ifp, "initializing\n");
 306
 307         /* XXX keep promiscoud mode */
 308         ifp->if_flags |= IFF_PROMISC;
 309
 310         fc = fwe->fd.fc;
 311 #define START 0
 312         if (fwe->dma_ch < 0) {
 313                 for (i = START; i < fc->nisodma; i ++) {
 314                         xferq = fc->ir[i];
 315                         if ((xferq->flag & FWXFERQ_OPEN) == 0)
 316                                 goto found;
 317                 }
 318                 printf("no free dma channel\n");
 319                 return;
 320 found:
 321                 fwe->dma_ch = i;
 322                 fwe->stream_ch = stream_ch;
 323                 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 324                 /* allocate DMA channel and init packet mode */
 325                 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF |
 326                                 FWXFERQ_HANDLER | FWXFERQ_STREAM;
 327                 xferq->flag &= ~0xff;
 328                 xferq->flag |= fwe->stream_ch & 0xff;
 329                 /* register fwe_input handler */
 330                 xferq->sc = (caddr_t) fwe;
 331                 xferq->hand = fwe_as_input;
 332                 xferq->bnchunk = rx_queue_len;
 333                 xferq->bnpacket = 1;
 334                 xferq->psize = MCLBYTES;
 335                 xferq->queued = 0;
 336                 xferq->buf = NULL;
 337                 xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
 338                         sizeof(struct fw_bulkxfer) * xferq->bnchunk,
 339                                                         M_FWE, M_WAITOK);
 340                 if (xferq->bulkxfer == NULL) {
 341                         printf("if_fwe: malloc failed\n");
 342                         return;
 343                 }
 344                 STAILQ_INIT(&xferq->stvalid);
 345                 STAILQ_INIT(&xferq->stfree);
 346                 STAILQ_INIT(&xferq->stdma);
 347                 xferq->stproc = NULL;
 348                 for (i = 0; i < xferq->bnchunk; i ++) {
 349                         m =
 350 #if defined(__DragonFly__)
 351                                 m_getcl(MB_WAIT, MT_DATA, M_PKTHDR);
 352 #elif __FreeBSD_version < 500000
 353                                 m_getcl(M_WAIT, MT_DATA, M_PKTHDR);
 354 #else
 355                                 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR);
 356 #endif
 357                         xferq->bulkxfer[i].mbuf = m;
 358                         if (m != NULL) {
 359                                 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
 360                                 STAILQ_INSERT_TAIL(&xferq->stfree,
 361                                                 &xferq->bulkxfer[i], link);
 362                         } else
 363                                 printf("fwe_as_input: m_getcl failed\n");
 364                 }
 365                 STAILQ_INIT(&fwe->xferlist);
 366                 for (i = 0; i < TX_MAX_QUEUE; i++) {
 367                         xfer = fw_xfer_alloc(M_FWE);
 368                         if (xfer == NULL)
 369                                 break;
 370                         xfer->send.spd = tx_speed;
 371                         xfer->fc = fwe->fd.fc;
 372                         xfer->retry_req = fw_asybusy;
 373                         xfer->sc = (caddr_t)fwe;
 374                         xfer->act.hand = fwe_output_callback;
 375                         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 376                 }
 377         } else
 378                 xferq = fc->ir[fwe->dma_ch];
 379
 380
 381         /* start dma */
 382         if ((xferq->flag & FWXFERQ_RUNNING) == 0)
 383                 fc->irx_enable(fc, fwe->dma_ch);
 384
 385         ifp->if_flags |= IFF_RUNNING;
 386         ifp->if_flags &= ~IFF_OACTIVE;
 387
 388         FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
 389 #if 0
 390         /* attempt to start output */
 391         fwe_start(ifp);
 392 #endif
 393 }
 394
 395
 396 static int
 397 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
 398 {
 399         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 400         struct ifstat *ifs = NULL;
 401         int s, error, len;
 402
 403         switch (cmd) {
 404                 case SIOCSIFFLAGS:
 405                         s = splimp();
 406                         if (ifp->if_flags & IFF_UP) {
 407                                 if (!(ifp->if_flags & IFF_RUNNING))
 408                                         fwe_init(&fwe->eth_softc);
 409                         } else {
 410                                 if (ifp->if_flags & IFF_RUNNING)
 411                                         fwe_stop(fwe);
 412                         }
 413                         /* XXX keep promiscoud mode */
 414                         ifp->if_flags |= IFF_PROMISC;
 415                         splx(s);
 416                         break;
 417                 case SIOCADDMULTI:
 418                 case SIOCDELMULTI:
 419                         break;
 420
 421                 case SIOCGIFSTATUS:
 422                         s = splimp();
 423                         ifs = (struct ifstat *)data;
 424                         len = strlen(ifs->ascii);
 425                         if (len < sizeof(ifs->ascii))
 426                                 snprintf(ifs->ascii + len,
 427                                         sizeof(ifs->ascii) - len,
 428                                         "\tch %d dma %d\n",
 429                                                 fwe->stream_ch, fwe->dma_ch);
 430                         splx(s);
 431                         break;
 432 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 433                 default:
 434 #else
 435                 case SIOCSIFADDR:
 436                 case SIOCGIFADDR:
 437                 case SIOCSIFMTU:
 438 #endif
 439                         s = splimp();
 440                         error = ether_ioctl(ifp, cmd, data);
 441                         splx(s);
 442                         return (error);
 443 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 444                 default:
 445                         return (EINVAL);
 446 #endif
 447         }
 448
 449         return (0);
 450 }
 451
 452 static void
 453 fwe_output_callback(struct fw_xfer *xfer)
 454 {
 455         struct fwe_softc *fwe;
 456         struct ifnet *ifp;
 457         int s;
 458
 459         fwe = (struct fwe_softc *)xfer->sc;
 460         ifp = &fwe->fwe_if;
 461         /* XXX error check */
 462         FWEDEBUG(ifp, "resp = %d\n", xfer->resp);
 463         if (xfer->resp != 0)
 464                 ifp->if_oerrors ++;
 465
 466         m_freem(xfer->mbuf);
 467         fw_xfer_unload(xfer);
 468
 469         s = splimp();
 470         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 471         splx(s);
 472
 473         /* for queue full */
 474         if (!ifq_is_empty(&ifp->if_snd))
 475                 fwe_start(ifp);
 476 }
 477
 478 static void
 479 fwe_start(struct ifnet *ifp)
 480 {
 481         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 482         int s;
 483
 484         FWEDEBUG(ifp, "starting\n");
 485
 486         if (fwe->dma_ch < 0) {
 487                 FWEDEBUG(ifp, "not ready\n");
 488
 489                 s = splimp();
 490                 ifq_purge(&ifp->if_snd);
 491                 splx(s);
 492
 493                 return;
 494         }
 495
 496         s = splimp();
 497         ifp->if_flags |= IFF_OACTIVE;
 498
 499         if (!ifq_is_empty(&ifp->if_snd))
 500                 fwe_as_output(fwe, ifp);
 501
 502         ifp->if_flags &= ~IFF_OACTIVE;
 503         splx(s);
 504 }
 505
 506 #define HDR_LEN 4
 507 #ifndef ETHER_ALIGN
 508 #define ETHER_ALIGN 2
 509 #endif
 510 /* Async. stream output */
 511 static void
 512 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
 513 {
 514         struct mbuf *m;
 515         struct fw_xfer *xfer;
 516         struct fw_xferq *xferq;
 517         struct fw_pkt *fp;
 518         int i = 0;
 519
 520         xfer = NULL;
 521         xferq = fwe->fd.fc->atq;
 522         while (xferq->queued < xferq->maxq - 1) {
 523                 xfer = STAILQ_FIRST(&fwe->xferlist);
 524                 if (xfer == NULL) {
 525                         printf("if_fwe: lack of xfer\n");
 526                         return;
 527                 }
 528                 m = ifq_dequeue(&ifp->if_snd);
 529                 if (m == NULL)
 530                         break;
 531                 STAILQ_REMOVE_HEAD(&fwe->xferlist, link);
 532                 BPF_MTAP(ifp, m);
 533
 534                 /* keep ip packet alignment for alpha */
 535                 M_PREPEND(m, ETHER_ALIGN, MB_DONTWAIT);
 536                 fp = &xfer->send.hdr;
 537                 *(u_int32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr;
 538                 fp->mode.stream.len = m->m_pkthdr.len;
 539                 xfer->mbuf = m;
 540                 xfer->send.pay_len = m->m_pkthdr.len;
 541
 542                 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) {
 543                         /* error */
 544                         ifp->if_oerrors ++;
 545                         /* XXX set error code */
 546                         fwe_output_callback(xfer);
 547                 } else {
 548                         ifp->if_opackets ++;
 549                         i++;
 550                 }
 551         }
 552 #if 0
 553         if (i > 1)
 554                 printf("%d queued\n", i);
 555 #endif
 556         if (i > 0)
 557                 xferq->start(fwe->fd.fc);
 558 }
 559
 560 /* Async. stream output */
 561 static void
 562 fwe_as_input(struct fw_xferq *xferq)
 563 {
 564         struct mbuf *m, *m0;
 565         struct ifnet *ifp;
 566         struct fwe_softc *fwe;
 567         struct fw_bulkxfer *sxfer;
 568         struct fw_pkt *fp;
 569         u_char *c;
 570
 571         fwe = (struct fwe_softc *)xferq->sc;
 572         ifp = &fwe->fwe_if;
 573 #if 0
 574         FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
 575 #endif
 576         while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
 577                 STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
 578                 fp = mtod(sxfer->mbuf, struct fw_pkt *);
 579                 if (fwe->fd.fc->irx_post != NULL)
 580                         fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld);
 581                 m = sxfer->mbuf;
 582
 583                 /* insert new rbuf */
 584                 sxfer->mbuf = m0 = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
 585                 if (m0 != NULL) {
 586                         m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
 587                         STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
 588                 } else
 589                         printf("fwe_as_input: m_getcl failed\n");
 590
 591                 if (sxfer->resp != 0 || fp->mode.stream.len <
 592                     ETHER_ALIGN + sizeof(struct ether_header)) {
 593                         m_freem(m);
 594                         ifp->if_ierrors ++;
 595                         continue;
 596                 }
 597
 598                 m->m_data += HDR_LEN + ETHER_ALIGN;
 599                 c = mtod(m, char *);
 600                 m->m_len = m->m_pkthdr.len =
 601                                 fp->mode.stream.len - ETHER_ALIGN;
 602                 m->m_pkthdr.rcvif = ifp;
 603 #if 0
 604                 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n"
 605                          "%02x %02x %02x %02x %02x %02x\n"
 606                          "%02x %02x %02x %02x\n"
 607                          "%02x %02x %02x %02x\n"
 608                          "%02x %02x %02x %02x\n"
 609                          "%02x %02x %02x %02x\n",
 610                          c[0], c[1], c[2], c[3], c[4], c[5],
 611                          c[6], c[7], c[8], c[9], c[10], c[11],
 612                          c[12], c[13], c[14], c[15],
 613                          c[16], c[17], c[18], c[19],
 614                          c[20], c[21], c[22], c[23],
 615                          c[20], c[21], c[22], c[23]
 616                  );
 617 #endif
 618                 (*ifp->if_input)(ifp, m);
 619                 ifp->if_ipackets ++;
 620         }
 621         if (STAILQ_FIRST(&xferq->stfree) != NULL)
 622                 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch);
 623 }
 624
 625
 626 static devclass_t fwe_devclass;
 627
 628 static device_method_t fwe_methods[] = {
 629         /* device interface */
 630         DEVMETHOD(device_identify,      fwe_identify),
 631         DEVMETHOD(device_probe,         fwe_probe),
 632         DEVMETHOD(device_attach,        fwe_attach),
 633         DEVMETHOD(device_detach,        fwe_detach),
 634         { 0, 0 }
 635 };
 636
 637 static driver_t fwe_driver = {
 638         "fwe",
 639         fwe_methods,
 640         sizeof(struct fwe_softc),
 641 };
 642
 643
 644 DECLARE_DUMMY_MODULE(fwe);
 645 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
 646 MODULE_VERSION(fwe, 1);
 647 MODULE_DEPEND(fwe, firewire, 1, 1, 1);