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 1.9 2004/03/14 15:36:50 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);
  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_output = ether_output;
 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         ether_ifattach(ifp, eaddr);
 223         splx(s);
 224
 225         /* Tell the upper layer(s) we support long frames. */
 226         ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
 227 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 228         ifp->if_capabilities |= IFCAP_VLAN_MTU;
 229 #endif
 230
 231
 232         FWEDEBUG(ifp, "interface created\n");
 233         return 0;
 234 }
 235
 236 static void
 237 fwe_stop(struct fwe_softc *fwe)
 238 {
 239         struct firewire_comm *fc;
 240         struct fw_xferq *xferq;
 241         struct ifnet *ifp = &fwe->fwe_if;
 242         struct fw_xfer *xfer, *next;
 243         int i;
 244
 245         fc = fwe->fd.fc;
 246
 247         FWE_POLL_DEREGISTER(fwe, ifp);
 248
 249         if (fwe->dma_ch >= 0) {
 250                 xferq = fc->ir[fwe->dma_ch];
 251
 252                 if (xferq->flag & FWXFERQ_RUNNING)
 253                         fc->irx_disable(fc, fwe->dma_ch);
 254                 xferq->flag &=
 255                         ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM |
 256                         FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK);
 257                 xferq->hand =  NULL;
 258
 259                 for (i = 0; i < xferq->bnchunk; i ++)
 260                         m_freem(xferq->bulkxfer[i].mbuf);
 261                 free(xferq->bulkxfer, M_FWE);
 262
 263                 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL;
 264                                         xfer = next) {
 265                         next = STAILQ_NEXT(xfer, link);
 266                         fw_xfer_free(xfer);
 267                 }
 268                 STAILQ_INIT(&fwe->xferlist);
 269
 270                 xferq->bulkxfer =  NULL;
 271                 fwe->dma_ch = -1;
 272         }
 273
 274         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
 275 }
 276
 277 static int
 278 fwe_detach(device_t dev)
 279 {
 280         struct fwe_softc *fwe;
 281         int s;
 282
 283         fwe = (struct fwe_softc *)device_get_softc(dev);
 284         s = splimp();
 285
 286         fwe_stop(fwe);
 287         ether_ifdetach(&fwe->fwe_if);
 288
 289         splx(s);
 290         return 0;
 291 }
 292
 293 static void
 294 fwe_init(void *arg)
 295 {
 296         struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe;
 297         struct firewire_comm *fc;
 298         struct ifnet *ifp = &fwe->fwe_if;
 299         struct fw_xferq *xferq;
 300         struct fw_xfer *xfer;
 301         struct mbuf *m;
 302         int i;
 303
 304         FWEDEBUG(ifp, "initializing\n");
 305
 306         /* XXX keep promiscoud mode */
 307         ifp->if_flags |= IFF_PROMISC;
 308
 309         fc = fwe->fd.fc;
 310 #define START 0
 311         if (fwe->dma_ch < 0) {
 312                 for (i = START; i < fc->nisodma; i ++) {
 313                         xferq = fc->ir[i];
 314                         if ((xferq->flag & FWXFERQ_OPEN) == 0)
 315                                 goto found;
 316                 }
 317                 printf("no free dma channel\n");
 318                 return;
 319 found:
 320                 fwe->dma_ch = i;
 321                 fwe->stream_ch = stream_ch;
 322                 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch;
 323                 /* allocate DMA channel and init packet mode */
 324                 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF |
 325                                 FWXFERQ_HANDLER | FWXFERQ_STREAM;
 326                 xferq->flag &= ~0xff;
 327                 xferq->flag |= fwe->stream_ch & 0xff;
 328                 /* register fwe_input handler */
 329                 xferq->sc = (caddr_t) fwe;
 330                 xferq->hand = fwe_as_input;
 331                 xferq->bnchunk = rx_queue_len;
 332                 xferq->bnpacket = 1;
 333                 xferq->psize = MCLBYTES;
 334                 xferq->queued = 0;
 335                 xferq->buf = NULL;
 336                 xferq->bulkxfer = (struct fw_bulkxfer *) malloc(
 337                         sizeof(struct fw_bulkxfer) * xferq->bnchunk,
 338                                                         M_FWE, M_WAITOK);
 339                 if (xferq->bulkxfer == NULL) {
 340                         printf("if_fwe: malloc failed\n");
 341                         return;
 342                 }
 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 =
 349 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 350                                 m_getcl(M_WAIT, MT_DATA, M_PKTHDR);
 351 #else
 352                                 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR);
 353 #endif
 354                         xferq->bulkxfer[i].mbuf = m;
 355                         if (m != NULL) {
 356                                 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
 357                                 STAILQ_INSERT_TAIL(&xferq->stfree,
 358                                                 &xferq->bulkxfer[i], link);
 359                         } else
 360                                 printf("fwe_as_input: m_getcl failed\n");
 361                 }
 362                 STAILQ_INIT(&fwe->xferlist);
 363                 for (i = 0; i < TX_MAX_QUEUE; i++) {
 364                         xfer = fw_xfer_alloc(M_FWE);
 365                         if (xfer == NULL)
 366                                 break;
 367                         xfer->send.spd = tx_speed;
 368                         xfer->fc = fwe->fd.fc;
 369                         xfer->retry_req = fw_asybusy;
 370                         xfer->sc = (caddr_t)fwe;
 371                         xfer->act.hand = fwe_output_callback;
 372                         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 373                 }
 374         } else
 375                 xferq = fc->ir[fwe->dma_ch];
 376
 377
 378         /* start dma */
 379         if ((xferq->flag & FWXFERQ_RUNNING) == 0)
 380                 fc->irx_enable(fc, fwe->dma_ch);
 381
 382         ifp->if_flags |= IFF_RUNNING;
 383         ifp->if_flags &= ~IFF_OACTIVE;
 384
 385         FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
 386 #if 0
 387         /* attempt to start output */
 388         fwe_start(ifp);
 389 #endif
 390 }
 391
 392
 393 static int
 394 fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 395 {
 396         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 397         struct ifstat *ifs = NULL;
 398         int s, error, len;
 399
 400         switch (cmd) {
 401                 case SIOCSIFFLAGS:
 402                         s = splimp();
 403                         if (ifp->if_flags & IFF_UP) {
 404                                 if (!(ifp->if_flags & IFF_RUNNING))
 405                                         fwe_init(&fwe->eth_softc);
 406                         } else {
 407                                 if (ifp->if_flags & IFF_RUNNING)
 408                                         fwe_stop(fwe);
 409                         }
 410                         /* XXX keep promiscoud mode */
 411                         ifp->if_flags |= IFF_PROMISC;
 412                         splx(s);
 413                         break;
 414                 case SIOCADDMULTI:
 415                 case SIOCDELMULTI:
 416                         break;
 417
 418                 case SIOCGIFSTATUS:
 419                         s = splimp();
 420                         ifs = (struct ifstat *)data;
 421                         len = strlen(ifs->ascii);
 422                         if (len < sizeof(ifs->ascii))
 423                                 snprintf(ifs->ascii + len,
 424                                         sizeof(ifs->ascii) - len,
 425                                         "\tch %d dma %d\n",
 426                                                 fwe->stream_ch, fwe->dma_ch);
 427                         splx(s);
 428                         break;
 429 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
 430                 default:
 431 #else
 432                 case SIOCSIFADDR:
 433                 case SIOCGIFADDR:
 434                 case SIOCSIFMTU:
 435 #endif
 436                         s = splimp();
 437                         error = ether_ioctl(ifp, cmd, data);
 438                         splx(s);
 439                         return (error);
 440 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 441                 default:
 442                         return (EINVAL);
 443 #endif
 444         }
 445
 446         return (0);
 447 }
 448
 449 static void
 450 fwe_output_callback(struct fw_xfer *xfer)
 451 {
 452         struct fwe_softc *fwe;
 453         struct ifnet *ifp;
 454         int s;
 455
 456         fwe = (struct fwe_softc *)xfer->sc;
 457         ifp = &fwe->fwe_if;
 458         /* XXX error check */
 459         FWEDEBUG(ifp, "resp = %d\n", xfer->resp);
 460         if (xfer->resp != 0)
 461                 ifp->if_oerrors ++;
 462
 463         m_freem(xfer->mbuf);
 464         fw_xfer_unload(xfer);
 465
 466         s = splimp();
 467         STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link);
 468         splx(s);
 469
 470         /* for queue full */
 471         if (ifp->if_snd.ifq_head != NULL)
 472                 fwe_start(ifp);
 473 }
 474
 475 static void
 476 fwe_start(struct ifnet *ifp)
 477 {
 478         struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe;
 479         int s;
 480
 481         FWEDEBUG(ifp, "starting\n");
 482
 483         if (fwe->dma_ch < 0) {
 484                 struct mbuf     *m = NULL;
 485
 486                 FWEDEBUG(ifp, "not ready\n");
 487
 488                 s = splimp();
 489                 do {
 490                         IF_DEQUEUE(&ifp->if_snd, m);
 491                         if (m != NULL)
 492                                 m_freem(m);
 493                         ifp->if_oerrors ++;
 494                 } while (m != NULL);
 495                 splx(s);
 496
 497                 return;
 498         }
 499
 500         s = splimp();
 501         ifp->if_flags |= IFF_OACTIVE;
 502
 503         if (ifp->if_snd.ifq_len != 0)
 504                 fwe_as_output(fwe, ifp);
 505
 506         ifp->if_flags &= ~IFF_OACTIVE;
 507         splx(s);
 508 }
 509
 510 #define HDR_LEN 4
 511 #ifndef ETHER_ALIGN
 512 #define ETHER_ALIGN 2
 513 #endif
 514 /* Async. stream output */
 515 static void
 516 fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
 517 {
 518         struct mbuf *m;
 519         struct fw_xfer *xfer;
 520         struct fw_xferq *xferq;
 521         struct fw_pkt *fp;
 522         int i = 0;
 523
 524         xfer = NULL;
 525         xferq = fwe->fd.fc->atq;
 526         while (xferq->queued < xferq->maxq - 1) {
 527                 xfer = STAILQ_FIRST(&fwe->xferlist);
 528                 if (xfer == NULL) {
 529                         printf("if_fwe: lack of xfer\n");
 530                         return;
 531                 }
 532                 IF_DEQUEUE(&ifp->if_snd, m);
 533                 if (m == NULL)
 534                         break;
 535                 STAILQ_REMOVE_HEAD(&fwe->xferlist, link);
 536 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 537                 if (ifp->if_bpf != NULL)
 538                         bpf_mtap(ifp, m);
 539 #else
 540                 BPF_MTAP(ifp, m);
 541 #endif
 542
 543                 /* keep ip packet alignment for alpha */
 544                 M_PREPEND(m, ETHER_ALIGN, M_DONTWAIT);
 545                 fp = &xfer->send.hdr;
 546                 *(u_int32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr;
 547                 fp->mode.stream.len = m->m_pkthdr.len;
 548                 xfer->mbuf = m;
 549                 xfer->send.pay_len = m->m_pkthdr.len;
 550
 551                 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) {
 552                         /* error */
 553                         ifp->if_oerrors ++;
 554                         /* XXX set error code */
 555                         fwe_output_callback(xfer);
 556                 } else {
 557                         ifp->if_opackets ++;
 558                         i++;
 559                 }
 560         }
 561 #if 0
 562         if (i > 1)
 563                 printf("%d queued\n", i);
 564 #endif
 565         if (i > 0)
 566                 xferq->start(fwe->fd.fc);
 567 }
 568
 569 /* Async. stream output */
 570 static void
 571 fwe_as_input(struct fw_xferq *xferq)
 572 {
 573         struct mbuf *m, *m0;
 574         struct ifnet *ifp;
 575         struct fwe_softc *fwe;
 576         struct fw_bulkxfer *sxfer;
 577         struct fw_pkt *fp;
 578         u_char *c;
 579 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 580         struct ether_header *eh;
 581 #endif
 582
 583         fwe = (struct fwe_softc *)xferq->sc;
 584         ifp = &fwe->fwe_if;
 585 #if 0
 586         FWE_POLL_REGISTER(fwe_poll, fwe, ifp);
 587 #endif
 588         while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) {
 589                 STAILQ_REMOVE_HEAD(&xferq->stvalid, link);
 590                 fp = mtod(sxfer->mbuf, struct fw_pkt *);
 591                 if (fwe->fd.fc->irx_post != NULL)
 592                         fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld);
 593                 m = sxfer->mbuf;
 594
 595                 /* insert new rbuf */
 596                 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 597                 if (m0 != NULL) {
 598                         m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size;
 599                         STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link);
 600                 } else
 601                         printf("fwe_as_input: m_getcl failed\n");
 602
 603                 if (sxfer->resp != 0 || fp->mode.stream.len <
 604                     ETHER_ALIGN + sizeof(struct ether_header)) {
 605                         m_freem(m);
 606                         ifp->if_ierrors ++;
 607                         continue;
 608                 }
 609
 610                 m->m_data += HDR_LEN + ETHER_ALIGN;
 611                 c = mtod(m, char *);
 612 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 613                 eh = (struct ether_header *)c;
 614                 m->m_data += sizeof(struct ether_header);
 615 #endif
 616                 m->m_len = m->m_pkthdr.len =
 617                                 fp->mode.stream.len - ETHER_ALIGN;
 618                 m->m_pkthdr.rcvif = ifp;
 619 #if 0
 620                 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n"
 621                          "%02x %02x %02x %02x %02x %02x\n"
 622                          "%02x %02x %02x %02x\n"
 623                          "%02x %02x %02x %02x\n"
 624                          "%02x %02x %02x %02x\n"
 625                          "%02x %02x %02x %02x\n",
 626                          c[0], c[1], c[2], c[3], c[4], c[5],
 627                          c[6], c[7], c[8], c[9], c[10], c[11],
 628                          c[12], c[13], c[14], c[15],
 629                          c[16], c[17], c[18], c[19],
 630                          c[20], c[21], c[22], c[23],
 631                          c[20], c[21], c[22], c[23]
 632                  );
 633 #endif
 634 #if defined(__DragonFly__) || __FreeBSD_version < 500000
 635                 ether_input(ifp, eh, m);
 636 #else
 637                 (*ifp->if_input)(ifp, m);
 638 #endif
 639                 ifp->if_ipackets ++;
 640         }
 641         if (STAILQ_FIRST(&xferq->stfree) != NULL)
 642                 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch);
 643 }
 644
 645
 646 static devclass_t fwe_devclass;
 647
 648 static device_method_t fwe_methods[] = {
 649         /* device interface */
 650         DEVMETHOD(device_identify,      fwe_identify),
 651         DEVMETHOD(device_probe,         fwe_probe),
 652         DEVMETHOD(device_attach,        fwe_attach),
 653         DEVMETHOD(device_detach,        fwe_detach),
 654         { 0, 0 }
 655 };
 656
 657 static driver_t fwe_driver = {
 658         "fwe",
 659         fwe_methods,
 660         sizeof(struct fwe_softc),
 661 };
 662
 663
 664 DECLARE_DUMMY_MODULE(fwe);
 665 DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0);
 666 MODULE_VERSION(fwe, 1);
 667 MODULE_DEPEND(fwe, firewire, 1, 1, 1);