if_fwe.c revision 167630
1351280Sdim/*- 2351280Sdim * Copyright (c) 2002-2003 3351280Sdim * Hidetoshi Shimokawa. All rights reserved. 4351280Sdim * 5351280Sdim * Redistribution and use in source and binary forms, with or without 6351280Sdim * modification, are permitted provided that the following conditions 7351280Sdim * are met: 8351280Sdim * 1. Redistributions of source code must retain the above copyright 9351280Sdim * notice, this list of conditions and the following disclaimer. 10351280Sdim * 2. Redistributions in binary form must reproduce the above copyright 11351280Sdim * notice, this list of conditions and the following disclaimer in the 12351280Sdim * documentation and/or other materials provided with the distribution. 13351280Sdim * 3. All advertising materials mentioning features or use of this software 14351280Sdim * must display the following acknowledgement: 15351280Sdim * 16351280Sdim * This product includes software developed by Hidetoshi Shimokawa. 17351280Sdim * 18351280Sdim * 4. Neither the name of the author nor the names of its contributors 19351280Sdim * may be used to endorse or promote products derived from this software 20351280Sdim * without specific prior written permission. 21351280Sdim * 22351280Sdim * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23351280Sdim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24351280Sdim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25351280Sdim * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26351280Sdim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27351280Sdim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28351280Sdim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29351280Sdim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30351280Sdim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31351280Sdim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32351280Sdim * SUCH DAMAGE. 33351280Sdim * 34351280Sdim * $FreeBSD: head/sys/dev/firewire/if_fwe.c 167630 2007-03-16 05:11:42Z simokawa $ 35351280Sdim */ 36351280Sdim 37351280Sdim#ifdef HAVE_KERNEL_OPTION_HEADERS 38351280Sdim#include "opt_device_polling.h" 39351280Sdim#include "opt_inet.h" 40351280Sdim#endif 41351280Sdim 42351280Sdim#include <sys/param.h> 43351280Sdim#include <sys/kernel.h> 44351280Sdim#include <sys/malloc.h> 45351280Sdim#include <sys/mbuf.h> 46351280Sdim#include <sys/socket.h> 47351280Sdim#include <sys/sockio.h> 48351280Sdim#include <sys/sysctl.h> 49351280Sdim#include <sys/systm.h> 50351280Sdim#include <sys/module.h> 51351280Sdim#include <sys/bus.h> 52351280Sdim#include <machine/bus.h> 53351280Sdim 54351280Sdim#include <net/bpf.h> 55351280Sdim#include <net/ethernet.h> 56351280Sdim#include <net/if.h> 57351280Sdim#include <net/if_arp.h> 58351280Sdim#include <net/if_types.h> 59351280Sdim#ifdef __DragonFly__ 60351280Sdim#include <net/vlan/if_vlan_var.h> 61351280Sdim#include <bus/firewire/firewire.h> 62351280Sdim#include <bus/firewire/firewirereg.h> 63351280Sdim#include "if_fwevar.h" 64351280Sdim#else 65351280Sdim#include <net/if_vlan_var.h> 66351280Sdim 67351280Sdim#include <dev/firewire/firewire.h> 68351280Sdim#include <dev/firewire/firewirereg.h> 69351280Sdim#include <dev/firewire/if_fwevar.h> 70351280Sdim#endif 71351280Sdim 72351280Sdim#define FWEDEBUG if (fwedebug) if_printf 73351280Sdim#define TX_MAX_QUEUE (FWMAXQUEUE - 1) 74351280Sdim 75351280Sdim/* network interface */ 76351280Sdimstatic void fwe_start (struct ifnet *); 77351280Sdimstatic int fwe_ioctl (struct ifnet *, u_long, caddr_t); 78351280Sdimstatic void fwe_init (void *); 79351280Sdim 80351280Sdimstatic void fwe_output_callback (struct fw_xfer *); 81351280Sdimstatic void fwe_as_output (struct fwe_softc *, struct ifnet *); 82351280Sdimstatic void fwe_as_input (struct fw_xferq *); 83351280Sdim 84351280Sdimstatic int fwedebug = 0; 85351280Sdimstatic int stream_ch = 1; 86351280Sdimstatic int tx_speed = 2; 87351280Sdimstatic int rx_queue_len = FWMAXQUEUE; 88351280Sdim 89351280SdimMALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface"); 90351280SdimSYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RW, &fwedebug, 0, ""); 91351280SdimSYSCTL_DECL(_hw_firewire); 92351280SdimSYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0, 93351280Sdim "Ethernet emulation subsystem"); 94351280SdimSYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0, 95351280Sdim "Stream channel to use"); 96351280SdimSYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RW, &tx_speed, 0, 97351280Sdim "Transmission speed"); 98351280SdimSYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len, 99351280Sdim 0, "Length of the receive queue"); 100351280Sdim 101351280SdimTUNABLE_INT("hw.firewire.fwe.stream_ch", &stream_ch); 102351280SdimTUNABLE_INT("hw.firewire.fwe.tx_speed", &tx_speed); 103351280SdimTUNABLE_INT("hw.firewire.fwe.rx_queue_len", &rx_queue_len); 104351280Sdim 105351280Sdim#ifdef DEVICE_POLLING 106351280Sdimstatic poll_handler_t fwe_poll; 107351280Sdim 108351280Sdimstatic void 109351280Sdimfwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 110351280Sdim{ 111351280Sdim struct fwe_softc *fwe; 112351280Sdim struct firewire_comm *fc; 113351280Sdim 114351280Sdim if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 115351280Sdim return; 116351280Sdim 117351280Sdim fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 118351280Sdim fc = fwe->fd.fc; 119351280Sdim fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 120351280Sdim} 121351280Sdim#endif /* DEVICE_POLLING */ 122351280Sdim 123351280Sdimstatic void 124351280Sdimfwe_identify(driver_t *driver, device_t parent) 125351280Sdim{ 126351280Sdim BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent)); 127351280Sdim} 128351280Sdim 129351280Sdimstatic int 130351280Sdimfwe_probe(device_t dev) 131351280Sdim{ 132351280Sdim device_t pa; 133351280Sdim 134351280Sdim pa = device_get_parent(dev); 135351280Sdim if(device_get_unit(dev) != device_get_unit(pa)){ 136351280Sdim return(ENXIO); 137351280Sdim } 138351280Sdim 139351280Sdim device_set_desc(dev, "Ethernet over FireWire"); 140351280Sdim return (0); 141351280Sdim} 142351280Sdim 143351280Sdimstatic int 144351280Sdimfwe_attach(device_t dev) 145351280Sdim{ 146351280Sdim struct fwe_softc *fwe; 147351280Sdim struct ifnet *ifp; 148351280Sdim int unit, s; 149351280Sdim#if defined(__DragonFly__) || __FreeBSD_version < 500000 150351280Sdim u_char *eaddr; 151351280Sdim#else 152351280Sdim u_char eaddr[6]; 153351280Sdim#endif 154351280Sdim struct fw_eui64 *eui; 155351280Sdim 156351280Sdim fwe = ((struct fwe_softc *)device_get_softc(dev)); 157351280Sdim unit = device_get_unit(dev); 158351280Sdim 159351280Sdim bzero(fwe, sizeof(struct fwe_softc)); 160351280Sdim /* XXX */ 161351280Sdim fwe->stream_ch = stream_ch; 162351280Sdim fwe->dma_ch = -1; 163351280Sdim 164351280Sdim fwe->fd.fc = device_get_ivars(dev); 165351280Sdim if (tx_speed < 0) 166351280Sdim tx_speed = fwe->fd.fc->speed; 167351280Sdim 168351280Sdim fwe->fd.dev = dev; 169351280Sdim fwe->fd.post_explore = NULL; 170351280Sdim fwe->eth_softc.fwe = fwe; 171351280Sdim 172351280Sdim fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM; 173351280Sdim fwe->pkt_hdr.mode.stream.sy = 0; 174351280Sdim fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 175351280Sdim 176351280Sdim /* generate fake MAC address: first and last 3bytes from eui64 */ 177351280Sdim#define LOCAL (0x02) 178351280Sdim#define GROUP (0x01) 179351280Sdim#if defined(__DragonFly__) || __FreeBSD_version < 500000 180351280Sdim eaddr = &IFP2ENADDR(fwe->eth_softc.ifp)[0]; 181351280Sdim#endif 182351280Sdim 183351280Sdim 184351280Sdim eui = &fwe->fd.fc->eui; 185351280Sdim eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP; 186351280Sdim eaddr[1] = FW_EUI64_BYTE(eui, 1); 187351280Sdim eaddr[2] = FW_EUI64_BYTE(eui, 2); 188351280Sdim eaddr[3] = FW_EUI64_BYTE(eui, 5); 189351280Sdim eaddr[4] = FW_EUI64_BYTE(eui, 6); 190351280Sdim eaddr[5] = FW_EUI64_BYTE(eui, 7); 191351280Sdim printf("if_fwe%d: Fake Ethernet address: " 192351280Sdim "%02x:%02x:%02x:%02x:%02x:%02x\n", unit, 193351280Sdim eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]); 194351280Sdim 195351280Sdim /* fill the rest and attach interface */ 196351280Sdim ifp = fwe->eth_softc.ifp = if_alloc(IFT_ETHER); 197351280Sdim if (ifp == NULL) { 198351280Sdim device_printf(dev, "can not if_alloc()\n"); 199351280Sdim return (ENOSPC); 200351280Sdim } 201351280Sdim ifp->if_softc = &fwe->eth_softc; 202351280Sdim 203351280Sdim#if __FreeBSD_version >= 501113 || defined(__DragonFly__) 204351280Sdim if_initname(ifp, device_get_name(dev), unit); 205351280Sdim#else 206351280Sdim ifp->if_unit = unit; 207351280Sdim ifp->if_name = "fwe"; 208351280Sdim#endif 209351280Sdim ifp->if_init = fwe_init; 210351280Sdim#if defined(__DragonFly__) || __FreeBSD_version < 500000 211351280Sdim ifp->if_output = ether_output; 212351280Sdim#endif 213351280Sdim ifp->if_start = fwe_start; 214351280Sdim ifp->if_ioctl = fwe_ioctl; 215351280Sdim ifp->if_mtu = ETHERMTU; 216351280Sdim ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST| 217351280Sdim IFF_NEEDSGIANT); 218351280Sdim ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 219351280Sdim 220351280Sdim s = splimp(); 221351280Sdim#if defined(__DragonFly__) || __FreeBSD_version < 500000 222351280Sdim ether_ifattach(ifp, 1); 223351280Sdim#else 224351280Sdim ether_ifattach(ifp, eaddr); 225351280Sdim#endif 226351280Sdim splx(s); 227351280Sdim 228351280Sdim /* Tell the upper layer(s) we support long frames. */ 229351280Sdim ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 230351280Sdim#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 231351280Sdim ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_POLLING; 232351280Sdim ifp->if_capenable |= IFCAP_VLAN_MTU; 233351280Sdim#endif 234351280Sdim 235351280Sdim 236351280Sdim FWEDEBUG(ifp, "interface created\n"); 237351280Sdim return 0; 238351280Sdim} 239351280Sdim 240351280Sdimstatic void 241351280Sdimfwe_stop(struct fwe_softc *fwe) 242351280Sdim{ 243351280Sdim struct firewire_comm *fc; 244351280Sdim struct fw_xferq *xferq; 245351280Sdim struct ifnet *ifp = fwe->eth_softc.ifp; 246351280Sdim struct fw_xfer *xfer, *next; 247351280Sdim int i; 248351280Sdim 249351280Sdim fc = fwe->fd.fc; 250351280Sdim 251351280Sdim if (fwe->dma_ch >= 0) { 252351280Sdim xferq = fc->ir[fwe->dma_ch]; 253351280Sdim 254351280Sdim if (xferq->flag & FWXFERQ_RUNNING) 255351280Sdim fc->irx_disable(fc, fwe->dma_ch); 256351280Sdim xferq->flag &= 257351280Sdim ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 258351280Sdim FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 259351280Sdim xferq->hand = NULL; 260351280Sdim 261351280Sdim for (i = 0; i < xferq->bnchunk; i ++) 262351280Sdim m_freem(xferq->bulkxfer[i].mbuf); 263351280Sdim free(xferq->bulkxfer, M_FWE); 264351280Sdim 265351280Sdim for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL; 266351280Sdim xfer = next) { 267351280Sdim next = STAILQ_NEXT(xfer, link); 268351280Sdim fw_xfer_free(xfer); 269351280Sdim } 270351280Sdim STAILQ_INIT(&fwe->xferlist); 271351280Sdim 272351280Sdim xferq->bulkxfer = NULL; 273351280Sdim fwe->dma_ch = -1; 274351280Sdim } 275351280Sdim 276351280Sdim#if defined(__FreeBSD__) 277351280Sdim ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 278351280Sdim#else 279351280Sdim ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 280#endif 281} 282 283static int 284fwe_detach(device_t dev) 285{ 286 struct fwe_softc *fwe; 287 struct ifnet *ifp; 288 int s; 289 290 fwe = device_get_softc(dev); 291 ifp = fwe->eth_softc.ifp; 292 293#ifdef DEVICE_POLLING 294 if (ifp->if_capenable & IFCAP_POLLING) 295 ether_poll_deregister(ifp); 296#endif 297 s = splimp(); 298 299 fwe_stop(fwe); 300#if defined(__DragonFly__) || __FreeBSD_version < 500000 301 ether_ifdetach(ifp, 1); 302#else 303 ether_ifdetach(ifp); 304 if_free(ifp); 305#endif 306 307 splx(s); 308 return 0; 309} 310 311static void 312fwe_init(void *arg) 313{ 314 struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe; 315 struct firewire_comm *fc; 316 struct ifnet *ifp = fwe->eth_softc.ifp; 317 struct fw_xferq *xferq; 318 struct fw_xfer *xfer; 319 struct mbuf *m; 320 int i; 321 322 FWEDEBUG(ifp, "initializing\n"); 323 324 /* XXX keep promiscoud mode */ 325 ifp->if_flags |= IFF_PROMISC; 326 327 fc = fwe->fd.fc; 328#define START 0 329 if (fwe->dma_ch < 0) { 330 for (i = START; i < fc->nisodma; i ++) { 331 xferq = fc->ir[i]; 332 if ((xferq->flag & FWXFERQ_OPEN) == 0) 333 goto found; 334 } 335 printf("no free dma channel\n"); 336 return; 337found: 338 fwe->dma_ch = i; 339 fwe->stream_ch = stream_ch; 340 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 341 /* allocate DMA channel and init packet mode */ 342 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF | 343 FWXFERQ_HANDLER | FWXFERQ_STREAM; 344 xferq->flag &= ~0xff; 345 xferq->flag |= fwe->stream_ch & 0xff; 346 /* register fwe_input handler */ 347 xferq->sc = (caddr_t) fwe; 348 xferq->hand = fwe_as_input; 349 xferq->bnchunk = rx_queue_len; 350 xferq->bnpacket = 1; 351 xferq->psize = MCLBYTES; 352 xferq->queued = 0; 353 xferq->buf = NULL; 354 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 355 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 356 M_FWE, M_WAITOK); 357 if (xferq->bulkxfer == NULL) { 358 printf("if_fwe: malloc failed\n"); 359 return; 360 } 361 STAILQ_INIT(&xferq->stvalid); 362 STAILQ_INIT(&xferq->stfree); 363 STAILQ_INIT(&xferq->stdma); 364 xferq->stproc = NULL; 365 for (i = 0; i < xferq->bnchunk; i ++) { 366 m = 367#if defined(__DragonFly__) || __FreeBSD_version < 500000 368 m_getcl(M_WAIT, MT_DATA, M_PKTHDR); 369#else 370 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 371#endif 372 xferq->bulkxfer[i].mbuf = m; 373 if (m != NULL) { 374 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 375 STAILQ_INSERT_TAIL(&xferq->stfree, 376 &xferq->bulkxfer[i], link); 377 } else 378 printf("fwe_as_input: m_getcl failed\n"); 379 } 380 STAILQ_INIT(&fwe->xferlist); 381 for (i = 0; i < TX_MAX_QUEUE; i++) { 382 xfer = fw_xfer_alloc(M_FWE); 383 if (xfer == NULL) 384 break; 385 xfer->send.spd = tx_speed; 386 xfer->fc = fwe->fd.fc; 387 xfer->sc = (caddr_t)fwe; 388 xfer->act.hand = fwe_output_callback; 389 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 390 } 391 } else 392 xferq = fc->ir[fwe->dma_ch]; 393 394 395 /* start dma */ 396 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 397 fc->irx_enable(fc, fwe->dma_ch); 398 399#if defined(__FreeBSD__) 400 ifp->if_drv_flags |= IFF_DRV_RUNNING; 401 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 402#else 403 ifp->if_flags |= IFF_RUNNING; 404 ifp->if_flags &= ~IFF_OACTIVE; 405#endif 406 407#if 0 408 /* attempt to start output */ 409 fwe_start(ifp); 410#endif 411} 412 413 414static int 415fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 416{ 417 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 418 struct ifstat *ifs = NULL; 419 int s, error, len; 420 421 switch (cmd) { 422 case SIOCSIFFLAGS: 423 s = splimp(); 424 if (ifp->if_flags & IFF_UP) { 425#if defined(__FreeBSD__) 426 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 427#else 428 if (!(ifp->if_flags & IFF_RUNNING)) 429#endif 430 fwe_init(&fwe->eth_softc); 431 } else { 432#if defined(__FreeBSD__) 433 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 434#else 435 if (ifp->if_flags & IFF_RUNNING) 436#endif 437 fwe_stop(fwe); 438 } 439 /* XXX keep promiscoud mode */ 440 ifp->if_flags |= IFF_PROMISC; 441 splx(s); 442 break; 443 case SIOCADDMULTI: 444 case SIOCDELMULTI: 445 break; 446 447 case SIOCGIFSTATUS: 448 s = splimp(); 449 ifs = (struct ifstat *)data; 450 len = strlen(ifs->ascii); 451 if (len < sizeof(ifs->ascii)) 452 snprintf(ifs->ascii + len, 453 sizeof(ifs->ascii) - len, 454 "\tch %d dma %d\n", 455 fwe->stream_ch, fwe->dma_ch); 456 splx(s); 457 break; 458 case SIOCSIFCAP: 459#ifdef DEVICE_POLLING 460 { 461 struct ifreq *ifr = (struct ifreq *) data; 462 struct firewire_comm *fc = fc = fwe->fd.fc; 463 464 if (ifr->ifr_reqcap & IFCAP_POLLING && 465 !(ifp->if_capenable & IFCAP_POLLING)) { 466 error = ether_poll_register(fwe_poll, ifp); 467 if (error) 468 return(error); 469 /* Disable interrupts */ 470 fc->set_intr(fc, 0); 471 ifp->if_capenable |= IFCAP_POLLING; 472 return (error); 473 } 474 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 475 ifp->if_capenable & IFCAP_POLLING) { 476 error = ether_poll_deregister(ifp); 477 /* Enable interrupts. */ 478 fc->set_intr(fc, 1); 479 ifp->if_capenable &= ~IFCAP_POLLING; 480 return (error); 481 } 482 } 483#endif /* DEVICE_POLLING */ 484 break; 485#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 486 default: 487#else 488 case SIOCSIFADDR: 489 case SIOCGIFADDR: 490 case SIOCSIFMTU: 491#endif 492 s = splimp(); 493 error = ether_ioctl(ifp, cmd, data); 494 splx(s); 495 return (error); 496#if defined(__DragonFly__) || __FreeBSD_version < 500000 497 default: 498 return (EINVAL); 499#endif 500 } 501 502 return (0); 503} 504 505static void 506fwe_output_callback(struct fw_xfer *xfer) 507{ 508 struct fwe_softc *fwe; 509 struct ifnet *ifp; 510 int s; 511 512 fwe = (struct fwe_softc *)xfer->sc; 513 ifp = fwe->eth_softc.ifp; 514 /* XXX error check */ 515 FWEDEBUG(ifp, "resp = %d\n", xfer->resp); 516 if (xfer->resp != 0) 517 ifp->if_oerrors ++; 518 519 m_freem(xfer->mbuf); 520 fw_xfer_unload(xfer); 521 522 s = splimp(); 523 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 524 splx(s); 525 526 /* for queue full */ 527 if (ifp->if_snd.ifq_head != NULL) 528 fwe_start(ifp); 529} 530 531static void 532fwe_start(struct ifnet *ifp) 533{ 534 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 535 int s; 536 537 GIANT_REQUIRED; 538 539 FWEDEBUG(ifp, "starting\n"); 540 541 if (fwe->dma_ch < 0) { 542 struct mbuf *m = NULL; 543 544 FWEDEBUG(ifp, "not ready\n"); 545 546 s = splimp(); 547 do { 548 IF_DEQUEUE(&ifp->if_snd, m); 549 if (m != NULL) 550 m_freem(m); 551 ifp->if_oerrors ++; 552 } while (m != NULL); 553 splx(s); 554 555 return; 556 } 557 558 s = splimp(); 559#if defined(__FreeBSD__) 560 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 561#else 562 ifp->if_flags |= IFF_OACTIVE; 563#endif 564 565 if (ifp->if_snd.ifq_len != 0) 566 fwe_as_output(fwe, ifp); 567 568#if defined(__FreeBSD__) 569 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 570#else 571 ifp->if_flags &= ~IFF_OACTIVE; 572#endif 573 splx(s); 574} 575 576#define HDR_LEN 4 577#ifndef ETHER_ALIGN 578#define ETHER_ALIGN 2 579#endif 580/* Async. stream output */ 581static void 582fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp) 583{ 584 struct mbuf *m; 585 struct fw_xfer *xfer; 586 struct fw_xferq *xferq; 587 struct fw_pkt *fp; 588 int i = 0; 589 590 xfer = NULL; 591 xferq = fwe->fd.fc->atq; 592 while (xferq->queued < xferq->maxq - 1) { 593 xfer = STAILQ_FIRST(&fwe->xferlist); 594 if (xfer == NULL) { 595 printf("if_fwe: lack of xfer\n"); 596 return; 597 } 598 IF_DEQUEUE(&ifp->if_snd, m); 599 if (m == NULL) 600 break; 601 STAILQ_REMOVE_HEAD(&fwe->xferlist, link); 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 */ 636static void 637fwe_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 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 653 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 654 fp = mtod(sxfer->mbuf, struct fw_pkt *); 655 if (fwe->fd.fc->irx_post != NULL) 656 fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld); 657 m = sxfer->mbuf; 658 659 /* insert new rbuf */ 660 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 661 if (m0 != NULL) { 662 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 663 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 664 } else 665 printf("fwe_as_input: m_getcl failed\n"); 666 667 if (sxfer->resp != 0 || fp->mode.stream.len < 668 ETHER_ALIGN + sizeof(struct ether_header)) { 669 m_freem(m); 670 ifp->if_ierrors ++; 671 continue; 672 } 673 674 m->m_data += HDR_LEN + ETHER_ALIGN; 675 c = mtod(m, char *); 676#if defined(__DragonFly__) || __FreeBSD_version < 500000 677 eh = (struct ether_header *)c; 678 m->m_data += sizeof(struct ether_header); 679 m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN 680 - sizeof(struct ether_header); 681#else 682 m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN; 683#endif 684 m->m_pkthdr.rcvif = ifp; 685#if 0 686 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n" 687 "%02x %02x %02x %02x %02x %02x\n" 688 "%02x %02x %02x %02x\n" 689 "%02x %02x %02x %02x\n" 690 "%02x %02x %02x %02x\n" 691 "%02x %02x %02x %02x\n", 692 c[0], c[1], c[2], c[3], c[4], c[5], 693 c[6], c[7], c[8], c[9], c[10], c[11], 694 c[12], c[13], c[14], c[15], 695 c[16], c[17], c[18], c[19], 696 c[20], c[21], c[22], c[23], 697 c[20], c[21], c[22], c[23] 698 ); 699#endif 700#if defined(__DragonFly__) || __FreeBSD_version < 500000 701 ether_input(ifp, eh, m); 702#else 703 (*ifp->if_input)(ifp, m); 704#endif 705 ifp->if_ipackets ++; 706 } 707 if (STAILQ_FIRST(&xferq->stfree) != NULL) 708 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch); 709} 710 711 712static devclass_t fwe_devclass; 713 714static device_method_t fwe_methods[] = { 715 /* device interface */ 716 DEVMETHOD(device_identify, fwe_identify), 717 DEVMETHOD(device_probe, fwe_probe), 718 DEVMETHOD(device_attach, fwe_attach), 719 DEVMETHOD(device_detach, fwe_detach), 720 { 0, 0 } 721}; 722 723static driver_t fwe_driver = { 724 "fwe", 725 fwe_methods, 726 sizeof(struct fwe_softc), 727}; 728 729 730#ifdef __DragonFly__ 731DECLARE_DUMMY_MODULE(fwe); 732#endif 733DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0); 734MODULE_VERSION(fwe, 1); 735MODULE_DEPEND(fwe, firewire, 1, 1, 1); 736