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 1.13 2005/01/23 20:21:31 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/vlan/if_vlan_var.h>
  59 #include <bus/firewire/firewire.h>
  60 #include <bus/firewire/firewirereg.h>
  61 #include "if_fwevar.h"
  62 #else
  63 #include <net/if_vlan_var.h>
  64
  65 #include <dev/firewire/firewire.h>
  66 #include <dev/firewire/firewirereg.h>
  67 #include <dev/firewire/if_fwevar.h>
  68 #endif
  69
  70 #define FWEDEBUG        if (fwedebug) if_printf
  71 #define TX_MAX_QUEUE    (FWMAXQUEUE - 1)
  72
  73 /* network interface */
  74 static void fwe_start (struct ifnet *);
  75 static int fwe_ioctl (struct ifnet *, u_long, caddr_t, struct ucred *);
  76 static void fwe_init (void *);
  77
  78 static void fwe_output_callback (struct fw_xfer *);
  79 static void fwe_as_output (struct fwe_softc *, struct ifnet *);
  80 static void fwe_as_input (struct fw_xferq *);
  81
  82 static int fwedebug = 0;
  83 static int stream_ch = 1;
  84 static int tx_speed = 2;
  85 static int rx_queue_len = FWMAXQUEUE;
  86
  87 MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface");
  88 SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RW, &fwedebug, 0, "");
  89 SYSCTL_DECL(_hw_firewire);
  90 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0,
  91         "Ethernet emulation subsystem");
  92 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0,
  93         "Stream channel to use");
  94 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RW, &tx_speed, 0,
  95         "Transmission speed");
  96 SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len,
  97         0, "Length of the receive queue");
  98
  99 TUNABLE_INT("hw.firewire.fwe.stream_ch", &stream_ch);
 100 TUNABLE_INT("hw.firewire.fwe.tx_speed", &tx_speed);
 101 TUNABLE_INT("hw.firewire.fwe.rx_queue_len", &rx_queue_len);
 102
 103 #ifdef DEVICE_POLLING
 104 #define FWE_POLL_REGISTER(func, fwe, ifp)                       \
 105         if (ether_poll_register(func, ifp)) {                   \
 106                 struct firewire_comm *fc = (fwe)->fd.fc;        \
 107                 fc->set_intr(fc, 0);                            \
 108         }
 109
 110 #define FWE_POLL_DEREGISTER(fwe, ifp)                           \
 111         do {                                                    \
 112                 struct firewire_comm *fc = (fwe)->fd.fc;        \
 113                 ether_poll_deregister(ifp);                     \
 114                 fc->set_intr(fc, 1);                            \
 115         } while(0)                                              \
 116
 117 static poll_handler_t fwe_poll;
 118
 119 static void
 120 fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
 121 {
 122         struct fwe_softc *fwe;
 123         struct firewire_comm *fc;
 124
 125         fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 126         fc = fwe->fd.fc;
 127         if (cmd == POLL_DEREGISTER) {
 128                 /* enable interrupts */
 129                 fc->set_intr(fc, 1);
 130                 return;
 131         }
 132         fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count);
 133 }
 134 #else
 135 #define FWE_POLL_REGISTER(func, fwe, ifp)
 136 #define FWE_POLL_DEREGISTER(fwe, ifp)
 137 #endif
 138 static void
 139 fwe_identify(driver_t *driver, device_t parent)
 140 {
 141         BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent));
 142 }
 143
 144 static int
 145 fwe_probe(device_t dev)
 146 {
 147         device_t pa;
 148
 149         pa = device_get_parent(dev);
 150         if(device_get_unit(dev) != device_get_unit(pa)){
 151                 return(ENXIO);
 152         }
 153
 154         device_set_desc(dev, "Ethernet over FireWire");
 155         return (0);
 156 }
 157
 158 static int
 159 fwe_attach(device_t dev)
 160 {
 161         struct fwe_softc *fwe;
 162         struct ifnet *ifp;
 163         int unit, s;
 164         u_char *eaddr;
 165         struct fw_eui64 *eui;
 166
 167         fwe = ((struct fwe_softc *)device_get_softc(dev));
 168         unit = device_get_unit(dev);
 169
 170         bzero(fwe, sizeof(struct fwe_softc));
 171         /* XXX */
 172         fwe->stream_ch = stream_ch;
 173         fwe->dma_ch = -1;
 174
 175         fwe->fd.fc = device_get_ivars(dev);
 176         if (tx_speed < 0)
 177                 tx_speed = fwe->fd.fc->speed;
 178
 179         fwe->fd.dev = dev;
 180         fwe->fd.post_explore = NULL;
 181         fwe->eth_softc.fwe = fwe;
 182
 183         fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM;
 184         fwe->pkt_hdr.mode.stream.sy = 0;
 185         fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 186
 187         /* generate fake MAC address: first and last 3bytes from eui64 */
 188 #define LOCAL (0x02)
 189 #define GROUP (0x01)
 190         eaddr = &fwe->eth_softc.arpcom.ac_enaddr[0];
 191
 192         eui = &fwe->fd.fc->eui;
 193         eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP;
 194         eaddr[1] = FW_EUI64_BYTE(eui, 1);
 195         eaddr[2] = FW_EUI64_BYTE(eui, 2);
 196         eaddr[3] = FW_EUI64_BYTE(eui, 5);
 197         eaddr[4] = FW_EUI64_BYTE(eui, 6);
 198         eaddr[5] = FW_EUI64_BYTE(eui, 7);
 199         printf("if_fwe%d: Fake Ethernet address: "
 200                 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit,
 201                 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]);
 202
 203         /* fill the rest and attach interface */
 204         ifp = &fwe->fwe_if;
 205         ifp->if_softc = &fwe->eth_softc;
 206
 207 #if __FreeBSD_version >= 501113 || defined(__DragonFly__)
 208         if_initname(ifp, device_get_name(dev), unit);
 209 #else
 210         ifp->if_unit = unit;
 211         ifp->if_name = "fwe";
 212 #endif
 213         ifp->if_init = fwe_init;
 214         ifp->if_start = fwe_start;
 215         ifp->if_ioctl = fwe_ioctl;
 216         ifp->if_mtu = ETHERMTU;
 217         ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST);
 218         ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE;
 219
 220         s = splimp();
 221         ether_ifattach(ifp, eaddr);
 222         splx(s);
 223
 224         /* Tell the upper layer(s) we support long frames. */
 225         ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
 226 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 227         ifp->if_capabilities |= IFCAP_VLAN_MTU;
 228 #endif
 229
 230
 231         FWEDEBUG(ifp, "interface created\n");
 232         return 0;
 233 }
 234
 235 static void
 236 fwe_stop(struct fwe_softc *fwe)
 237 {
 238         struct firewire_comm *fc;
 239         struct fw_xferq *xferq;
 240         struct ifnet *ifp = &fwe->fwe_if;
 241         struct fw_xfer *xfer, *next;
 242         int i;
 243
 244         fc = fwe->fd.fc;
 245
 246         FWE_POLL_DEREGISTER(fwe, ifp);
 247
 248         if (fwe->dma_ch >= 0) {
 249                 xferq = fc->ir[fwe->dma_ch];
 250
 251                 if (xferq->flag & FWXFERQ_RUNNING)
 252                         fc->irx_disable(fc, fwe->dma_ch);
 253                 xferq->flag &=
 254                         ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
 255                         FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
 256                 xferq->hand =  NULL;
 257
 258                 for (i = 0; i < xferq->bnchunk; i ++)
 259                         m_freem(xferq->bulkxfer[i].mbuf);
 260                 free(xferq->bulkxfer, M_FWE);
 261
 262                 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL;
 263                                         xfer = next) {
 264                         next = STAILQ_NEXT(xfer, link);
 265                         fw_xfer_free(xfer);
 266                 }
 267                 STAILQ_INIT(&fwe->xferlist);
 268
 269                 xferq->bulkxfer =  NULL;
 270                 fwe->dma_ch = -1;
 271         }
 272
 273         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
 274 }
 275
 276 static int
 277 fwe_detach(device_t dev)
 278 {
 279         struct fwe_softc *fwe;
 280         int s;
 281
 282         fwe = (struct fwe_softc *)device_get_softc(dev);
 283         s = splimp();
 284
 285         fwe_stop(fwe);
 286         ether_ifdetach(&fwe->fwe_if);
 287
 288         splx(s);
 289         return 0;
 290 }
 291
 292 static void
 293 fwe_init(void *arg)
 294 {
 295         struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
 296         struct firewire_comm *fc;
 297         struct ifnet *ifp = &fwe->fwe_if;
 298         struct fw_xferq *xferq;
 299         struct fw_xfer *xfer;
 300         struct mbuf *m;
 301         int i;
 302
 303         FWEDEBUG(ifp, "initializing\n");
 304
 305         /* XXX keep promiscoud mode */
 306         ifp->if_flags |= IFF_PROMISC;
 307
 308         fc = fwe->fd.fc;
 309 #define START 0
 310         if (fwe->dma_ch < 0) {
 311                 for (i = START; i < fc->nisodma; i ++) {
 312                         xferq = fc->ir[i];
 313                         if ((xferq->flag & FWXFERQ_OPEN) == 0)
 314                                 goto found;
 315                 }
 316                 printf("no free dma channel\n");
 317                 return;
 318 found:
 319                 fwe->dma_ch = i;
 320                 fwe->stream_ch = stream_ch;
 321                 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 322                 /* allocate DMA channel and init packet mode */
 323                 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF |
 324                                 FWXFERQ_HANDLER | FWXFERQ_STREAM;
 325                 xferq->flag &= ~0xff;
 326                 xferq->flag |= fwe->stream_ch & 0xff;
 327                 /* register fwe_input handler */
 328                 xferq->sc = (caddr_t) fwe;
 329                 xferq->hand = fwe_as_input;
 330                 xferq->bnchunk = rx_queue_len;
 331                 xferq->bnpacket = 1;
 332                 xferq->psize = MCLBYTES;
 333                 xferq->queued = 0;
 334                 xferq->buf = NULL;
 335                 xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
 336                         sizeof(struct fw_bulkxfer) * xferq->bnchunk,
 337                                                         M_FWE, M_WAITOK);
 338                 if (xferq->bulkxfer == NULL) {
 339                         printf("if_fwe: malloc failed\n");
 340                         return;
 341                 }
 342                 STAILQ_INIT(&xferq->stvalid);
 343                 STAILQ_INIT(&xferq->stfree);
 344                 STAILQ_INIT(&xferq->stdma);
 345                 xferq->stproc = NULL;
 346                 for (i = 0; i < xferq->bnchunk; i ++) {
 347                         m =
 348 #if defined(__DragonFly__)
 349                                 m_getcl(MB_WAIT, MT_DATA, M_PKTHDR);
 350 #elif __FreeBSD_version < 500000
 351                                 m_getcl(M_WAIT, MT_DATA, M_PKTHDR);
 352 #else
 353                                 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR);
 354 #endif
 355                         xferq->bulkxfer[i].mbuf = m;
 356                         if (m != NULL) {
 357                                 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
 358                                 STAILQ_INSERT_TAIL(&xferq->stfree,
 359                                                 &xferq->bulkxfer[i], link);
 360                         } else
 361                                 printf("fwe_as_input: m_getcl failed\n");
 362                 }
 363                 STAILQ_INIT(&fwe->xferlist);
 364                 for (i = 0; i < TX_MAX_QUEUE; i++) {
 365                         xfer = fw_xfer_alloc(M_FWE);
 366                         if (xfer == NULL)
 367                                 break;
 368                         xfer->send.spd = tx_speed;
 369                         xfer->fc = fwe->fd.fc;
 370                         xfer->retry_req = fw_asybusy;
 371                         xfer->sc = (caddr_t)fwe;
 372                         xfer->act.hand = fwe_output_callback;
 373                         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 374                 }
 375         } else
 376                 xferq = fc->ir[fwe->dma_ch];
 377
 378
 379         /* start dma */
 380         if ((xferq->flag & FWXFERQ_RUNNING) == 0)
 381                 fc->irx_enable(fc, fwe->dma_ch);
 382
 383         ifp->if_flags |= IFF_RUNNING;
 384         ifp->if_flags &= ~IFF_OACTIVE;
 385
 386         FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
 387 #if 0
 388         /* attempt to start output */
 389         fwe_start(ifp);
 390 #endif
 391 }
 392
 393
 394 static int
 395 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
 396 {
 397         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 398         struct ifstat *ifs = NULL;
 399         int s, error, len;
 400
 401         switch (cmd) {
 402                 case SIOCSIFFLAGS:
 403                         s = splimp();
 404                         if (ifp->if_flags & IFF_UP) {
 405                                 if (!(ifp->if_flags & IFF_RUNNING))
 406                                         fwe_init(&fwe->eth_softc);
 407                         } else {
 408                                 if (ifp->if_flags & IFF_RUNNING)
 409                                         fwe_stop(fwe);
 410                         }
 411                         /* XXX keep promiscoud mode */
 412                         ifp->if_flags |= IFF_PROMISC;
 413                         splx(s);
 414                         break;
 415                 case SIOCADDMULTI:
 416                 case SIOCDELMULTI:
 417                         break;
 418
 419                 case SIOCGIFSTATUS:
 420                         s = splimp();
 421                         ifs = (struct ifstat *)data;
 422                         len = strlen(ifs->ascii);
 423                         if (len < sizeof(ifs->ascii))
 424                                 snprintf(ifs->ascii + len,
 425                                         sizeof(ifs->ascii) - len,
 426                                         "\tch %d dma %d\n",
 427                                                 fwe->stream_ch, fwe->dma_ch);
 428                         splx(s);
 429                         break;
 430 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 431                 default:
 432 #else
 433                 case SIOCSIFADDR:
 434                 case SIOCGIFADDR:
 435                 case SIOCSIFMTU:
 436 #endif
 437                         s = splimp();
 438                         error = ether_ioctl(ifp, cmd, data);
 439                         splx(s);
 440                         return (error);
 441 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 442                 default:
 443                         return (EINVAL);
 444 #endif
 445         }
 446
 447         return (0);
 448 }
 449
 450 static void
 451 fwe_output_callback(struct fw_xfer *xfer)
 452 {
 453         struct fwe_softc *fwe;
 454         struct ifnet *ifp;
 455         int s;
 456
 457         fwe = (struct fwe_softc *)xfer->sc;
 458         ifp = &fwe->fwe_if;
 459         /* XXX error check */
 460         FWEDEBUG(ifp, "resp = %d\n", xfer->resp);
 461         if (xfer->resp != 0)
 462                 ifp->if_oerrors ++;
 463
 464         m_freem(xfer->mbuf);
 465         fw_xfer_unload(xfer);
 466
 467         s = splimp();
 468         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 469         splx(s);
 470
 471         /* for queue full */
 472         if (ifp->if_snd.ifq_head != NULL)
 473                 fwe_start(ifp);
 474 }
 475
 476 static void
 477 fwe_start(struct ifnet *ifp)
 478 {
 479         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 480         int s;
 481
 482         FWEDEBUG(ifp, "starting\n");
 483
 484         if (fwe->dma_ch < 0) {
 485                 struct mbuf     *m = NULL;
 486
 487                 FWEDEBUG(ifp, "not ready\n");
 488
 489                 s = splimp();
 490                 do {
 491                         IF_DEQUEUE(&ifp->if_snd, m);
 492                         if (m != NULL)
 493                                 m_freem(m);
 494                         ifp->if_oerrors ++;
 495                 } while (m != NULL);
 496                 splx(s);
 497
 498                 return;
 499         }
 500
 501         s = splimp();
 502         ifp->if_flags |= IFF_OACTIVE;
 503
 504         if (ifp->if_snd.ifq_len != 0)
 505                 fwe_as_output(fwe, ifp);
 506
 507         ifp->if_flags &= ~IFF_OACTIVE;
 508         splx(s);
 509 }
 510
 511 #define HDR_LEN 4
 512 #ifndef ETHER_ALIGN
 513 #define ETHER_ALIGN 2
 514 #endif
 515 /* Async. stream output */
 516 static void
 517 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
 518 {
 519         struct mbuf *m;
 520         struct fw_xfer *xfer;
 521         struct fw_xferq *xferq;
 522         struct fw_pkt *fp;
 523         int i = 0;
 524
 525         xfer = NULL;
 526         xferq = fwe->fd.fc->atq;
 527         while (xferq->queued < xferq->maxq - 1) {
 528                 xfer = STAILQ_FIRST(&fwe->xferlist);
 529                 if (xfer == NULL) {
 530                         printf("if_fwe: lack of xfer\n");
 531                         return;
 532                 }
 533                 IF_DEQUEUE(&ifp->if_snd, m);
 534                 if (m == NULL)
 535                         break;
 536                 STAILQ_REMOVE_HEAD(&fwe->xferlist, link);
 537                 BPF_MTAP(ifp, m);
 538
 539                 /* keep ip packet alignment for alpha */
 540                 M_PREPEND(m, ETHER_ALIGN, MB_DONTWAIT);
 541                 fp = &xfer->send.hdr;
 542                 *(u_int32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr;
 543                 fp->mode.stream.len = m->m_pkthdr.len;
 544                 xfer->mbuf = m;
 545                 xfer->send.pay_len = m->m_pkthdr.len;
 546
 547                 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) {
 548                         /* error */
 549                         ifp->if_oerrors ++;
 550                         /* XXX set error code */
 551                         fwe_output_callback(xfer);
 552                 } else {
 553                         ifp->if_opackets ++;
 554                         i++;
 555                 }
 556         }
 557 #if 0
 558         if (i > 1)
 559                 printf("%d queued\n", i);
 560 #endif
 561         if (i > 0)
 562                 xferq->start(fwe->fd.fc);
 563 }
 564
 565 /* Async. stream output */
 566 static void
 567 fwe_as_input(struct fw_xferq *xferq)
 568 {
 569         struct mbuf *m, *m0;
 570         struct ifnet *ifp;
 571         struct fwe_softc *fwe;
 572         struct fw_bulkxfer *sxfer;
 573         struct fw_pkt *fp;
 574         u_char *c;
 575
 576         fwe = (struct fwe_softc *)xferq->sc;
 577         ifp = &fwe->fwe_if;
 578 #if 0
 579         FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
 580 #endif
 581         while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
 582                 STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
 583                 fp = mtod(sxfer->mbuf, struct fw_pkt *);
 584                 if (fwe->fd.fc->irx_post != NULL)
 585                         fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld);
 586                 m = sxfer->mbuf;
 587
 588                 /* insert new rbuf */
 589                 sxfer->mbuf = m0 = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
 590                 if (m0 != NULL) {
 591                         m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
 592                         STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
 593                 } else
 594                         printf("fwe_as_input: m_getcl failed\n");
 595
 596                 if (sxfer->resp != 0 || fp->mode.stream.len <
 597                     ETHER_ALIGN + sizeof(struct ether_header)) {
 598                         m_freem(m);
 599                         ifp->if_ierrors ++;
 600                         continue;
 601                 }
 602
 603                 m->m_data += HDR_LEN + ETHER_ALIGN;
 604                 c = mtod(m, char *);
 605                 m->m_len = m->m_pkthdr.len =
 606                                 fp->mode.stream.len - ETHER_ALIGN;
 607                 m->m_pkthdr.rcvif = ifp;
 608 #if 0
 609                 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n"
 610                          "%02x %02x %02x %02x %02x %02x\n"
 611                          "%02x %02x %02x %02x\n"
 612                          "%02x %02x %02x %02x\n"
 613                          "%02x %02x %02x %02x\n"
 614                          "%02x %02x %02x %02x\n",
 615                          c[0], c[1], c[2], c[3], c[4], c[5],
 616                          c[6], c[7], c[8], c[9], c[10], c[11],
 617                          c[12], c[13], c[14], c[15],
 618                          c[16], c[17], c[18], c[19],
 619                          c[20], c[21], c[22], c[23],
 620                          c[20], c[21], c[22], c[23]
 621                  );
 622 #endif
 623                 (*ifp->if_input)(ifp, m);
 624                 ifp->if_ipackets ++;
 625         }
 626         if (STAILQ_FIRST(&xferq->stfree) != NULL)
 627                 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch);
 628 }
 629
 630
 631 static devclass_t fwe_devclass;
 632
 633 static device_method_t fwe_methods[] = {
 634         /* device interface */
 635         DEVMETHOD(device_identify,      fwe_identify),
 636         DEVMETHOD(device_probe,         fwe_probe),
 637         DEVMETHOD(device_attach,        fwe_attach),
 638         DEVMETHOD(device_detach,        fwe_detach),
 639         { 0, 0 }
 640 };
 641
 642 static driver_t fwe_driver = {
 643         "fwe",
 644         fwe_methods,
 645         sizeof(struct fwe_softc),
 646 };
 647
 648
 649 DECLARE_DUMMY_MODULE(fwe);
 650 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
 651 MODULE_VERSION(fwe, 1);
 652 MODULE_DEPEND(fwe, firewire, 1, 1, 1);