35 */ 36 37#include "opt_inet.h" 38 39#include <sys/param.h> 40#include <sys/kernel.h> 41#include <sys/malloc.h> 42#include <sys/mbuf.h> 43#include <sys/socket.h> 44#include <sys/sockio.h> 45#include <sys/sysctl.h> 46#include <sys/systm.h> 47#include <sys/module.h> 48#include <sys/bus.h> 49#include <machine/bus.h> 50 51#include <net/bpf.h> 52#include <net/ethernet.h> 53#include <net/if.h> 54#include <net/if_arp.h> 55#ifdef __DragonFly__ 56#include <net/vlan/if_vlan_var.h> 57#include <bus/firewire/firewire.h> 58#include <bus/firewire/firewirereg.h> 59#include "if_fwevar.h" 60#else 61#include <net/if_vlan_var.h> 62 63#include <dev/firewire/firewire.h> 64#include <dev/firewire/firewirereg.h> 65#include <dev/firewire/if_fwevar.h> 66#endif 67 68#define FWEDEBUG if (fwedebug) if_printf 69#define TX_MAX_QUEUE (FWMAXQUEUE - 1) 70 71/* network interface */ 72static void fwe_start (struct ifnet *); 73static int fwe_ioctl (struct ifnet *, u_long, caddr_t); 74static void fwe_init (void *); 75 76static void fwe_output_callback (struct fw_xfer *); 77static void fwe_as_output (struct fwe_softc *, struct ifnet *); 78static void fwe_as_input (struct fw_xferq *); 79 80static int fwedebug = 0; 81static int stream_ch = 1; 82static int tx_speed = 2; 83static int rx_queue_len = FWMAXQUEUE; 84 85MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface"); 86SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RW, &fwedebug, 0, ""); 87SYSCTL_DECL(_hw_firewire); 88SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0, 89 "Ethernet emulation subsystem"); 90SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0, 91 "Stream channel to use"); 92SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RW, &tx_speed, 0, 93 "Transmission speed"); 94SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len, 95 0, "Length of the receive queue"); 96 97TUNABLE_INT("hw.firewire.fwe.stream_ch", &stream_ch); 98TUNABLE_INT("hw.firewire.fwe.tx_speed", &tx_speed); 99TUNABLE_INT("hw.firewire.fwe.rx_queue_len", &rx_queue_len); 100 101#ifdef DEVICE_POLLING 102#define FWE_POLL_REGISTER(func, fwe, ifp) \ 103 if (ether_poll_register(func, ifp)) { \ 104 struct firewire_comm *fc = (fwe)->fd.fc; \ 105 fc->set_intr(fc, 0); \ 106 } 107 108#define FWE_POLL_DEREGISTER(fwe, ifp) \ 109 do { \ 110 struct firewire_comm *fc = (fwe)->fd.fc; \ 111 ether_poll_deregister(ifp); \ 112 fc->set_intr(fc, 1); \ 113 } while(0) \ 114 115static poll_handler_t fwe_poll; 116 117static void 118fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 119{ 120 struct fwe_softc *fwe; 121 struct firewire_comm *fc; 122 123 fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 124 fc = fwe->fd.fc; 125 if (cmd == POLL_DEREGISTER) { 126 /* enable interrupts */ 127 fc->set_intr(fc, 1); 128 return; 129 } 130 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 131} 132#else 133#define FWE_POLL_REGISTER(func, fwe, ifp) 134#define FWE_POLL_DEREGISTER(fwe, ifp) 135#endif 136static void 137fwe_identify(driver_t *driver, device_t parent) 138{ 139 BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent)); 140} 141 142static int 143fwe_probe(device_t dev) 144{ 145 device_t pa; 146 147 pa = device_get_parent(dev); 148 if(device_get_unit(dev) != device_get_unit(pa)){ 149 return(ENXIO); 150 } 151 152 device_set_desc(dev, "Ethernet over FireWire"); 153 return (0); 154} 155 156static int 157fwe_attach(device_t dev) 158{ 159 struct fwe_softc *fwe; 160 struct ifnet *ifp; 161 int unit, s; 162 u_char *eaddr; 163 struct fw_eui64 *eui; 164 165 fwe = ((struct fwe_softc *)device_get_softc(dev)); 166 unit = device_get_unit(dev); 167 168 bzero(fwe, sizeof(struct fwe_softc)); 169 /* XXX */ 170 fwe->stream_ch = stream_ch; 171 fwe->dma_ch = -1; 172 173 fwe->fd.fc = device_get_ivars(dev); 174 if (tx_speed < 0) 175 tx_speed = fwe->fd.fc->speed; 176 177 fwe->fd.dev = dev; 178 fwe->fd.post_explore = NULL; 179 fwe->eth_softc.fwe = fwe; 180 181 fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM; 182 fwe->pkt_hdr.mode.stream.sy = 0; 183 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 184 185 /* generate fake MAC address: first and last 3bytes from eui64 */ 186#define LOCAL (0x02) 187#define GROUP (0x01) 188 eaddr = &fwe->eth_softc.arpcom.ac_enaddr[0]; 189 190 eui = &fwe->fd.fc->eui; 191 eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP; 192 eaddr[1] = FW_EUI64_BYTE(eui, 1); 193 eaddr[2] = FW_EUI64_BYTE(eui, 2); 194 eaddr[3] = FW_EUI64_BYTE(eui, 5); 195 eaddr[4] = FW_EUI64_BYTE(eui, 6); 196 eaddr[5] = FW_EUI64_BYTE(eui, 7); 197 printf("if_fwe%d: Fake Ethernet address: " 198 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit, 199 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]); 200 201 /* fill the rest and attach interface */ 202 ifp = &fwe->fwe_if; 203 ifp->if_softc = &fwe->eth_softc; 204 205#if __FreeBSD_version >= 501113 || defined(__DragonFly__) 206 if_initname(ifp, device_get_name(dev), unit); 207#else 208 ifp->if_unit = unit; 209 ifp->if_name = "fwe"; 210#endif 211 ifp->if_init = fwe_init; 212 ifp->if_output = ether_output; 213 ifp->if_start = fwe_start; 214 ifp->if_ioctl = fwe_ioctl; 215 ifp->if_mtu = ETHERMTU; 216 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 217 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 218 219 s = splimp(); 220#if defined(__DragonFly__) || __FreeBSD_version < 500000 221 ether_ifattach(ifp, 1); 222#else 223 ether_ifattach(ifp, eaddr); 224#endif 225 splx(s); 226 227 /* Tell the upper layer(s) we support long frames. */ 228 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 229#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 230 ifp->if_capabilities |= IFCAP_VLAN_MTU; 231 ifp->if_capenable |= IFCAP_VLAN_MTU; 232#endif 233 234 235 FWEDEBUG(ifp, "interface created\n"); 236 return 0; 237} 238 239static void 240fwe_stop(struct fwe_softc *fwe) 241{ 242 struct firewire_comm *fc; 243 struct fw_xferq *xferq; 244 struct ifnet *ifp = &fwe->fwe_if; 245 struct fw_xfer *xfer, *next; 246 int i; 247 248 fc = fwe->fd.fc; 249 250 FWE_POLL_DEREGISTER(fwe, ifp); 251 252 if (fwe->dma_ch >= 0) { 253 xferq = fc->ir[fwe->dma_ch]; 254 255 if (xferq->flag & FWXFERQ_RUNNING) 256 fc->irx_disable(fc, fwe->dma_ch); 257 xferq->flag &= 258 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 259 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 260 xferq->hand = NULL; 261 262 for (i = 0; i < xferq->bnchunk; i ++) 263 m_freem(xferq->bulkxfer[i].mbuf); 264 free(xferq->bulkxfer, M_FWE); 265 266 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL; 267 xfer = next) { 268 next = STAILQ_NEXT(xfer, link); 269 fw_xfer_free(xfer); 270 } 271 STAILQ_INIT(&fwe->xferlist); 272 273 xferq->bulkxfer = NULL; 274 fwe->dma_ch = -1; 275 } 276 277 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 278} 279 280static int 281fwe_detach(device_t dev) 282{ 283 struct fwe_softc *fwe; 284 int s; 285 286 fwe = (struct fwe_softc *)device_get_softc(dev); 287 s = splimp(); 288 289 fwe_stop(fwe); 290#if defined(__DragonFly__) || __FreeBSD_version < 500000 291 ether_ifdetach(&fwe->fwe_if, 1); 292#else 293 ether_ifdetach(&fwe->fwe_if); 294#endif 295 296 splx(s); 297 return 0; 298} 299 300static void 301fwe_init(void *arg) 302{ 303 struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe; 304 struct firewire_comm *fc; 305 struct ifnet *ifp = &fwe->fwe_if; 306 struct fw_xferq *xferq; 307 struct fw_xfer *xfer; 308 struct mbuf *m; 309 int i; 310 311 FWEDEBUG(ifp, "initializing\n"); 312 313 /* XXX keep promiscoud mode */ 314 ifp->if_flags |= IFF_PROMISC; 315 316 fc = fwe->fd.fc; 317#define START 0 318 if (fwe->dma_ch < 0) { 319 for (i = START; i < fc->nisodma; i ++) { 320 xferq = fc->ir[i]; 321 if ((xferq->flag & FWXFERQ_OPEN) == 0) 322 goto found; 323 } 324 printf("no free dma channel\n"); 325 return; 326found: 327 fwe->dma_ch = i; 328 fwe->stream_ch = stream_ch; 329 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 330 /* allocate DMA channel and init packet mode */ 331 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF | 332 FWXFERQ_HANDLER | FWXFERQ_STREAM; 333 xferq->flag &= ~0xff; 334 xferq->flag |= fwe->stream_ch & 0xff; 335 /* register fwe_input handler */ 336 xferq->sc = (caddr_t) fwe; 337 xferq->hand = fwe_as_input; 338 xferq->bnchunk = rx_queue_len; 339 xferq->bnpacket = 1; 340 xferq->psize = MCLBYTES; 341 xferq->queued = 0; 342 xferq->buf = NULL; 343 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 344 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 345 M_FWE, M_WAITOK); 346 if (xferq->bulkxfer == NULL) { 347 printf("if_fwe: malloc failed\n"); 348 return; 349 } 350 STAILQ_INIT(&xferq->stvalid); 351 STAILQ_INIT(&xferq->stfree); 352 STAILQ_INIT(&xferq->stdma); 353 xferq->stproc = NULL; 354 for (i = 0; i < xferq->bnchunk; i ++) { 355 m = 356#if defined(__DragonFly__) || __FreeBSD_version < 500000 357 m_getcl(M_WAIT, MT_DATA, M_PKTHDR); 358#else 359 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 360#endif 361 xferq->bulkxfer[i].mbuf = m; 362 if (m != NULL) { 363 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 364 STAILQ_INSERT_TAIL(&xferq->stfree, 365 &xferq->bulkxfer[i], link); 366 } else 367 printf("fwe_as_input: m_getcl failed\n"); 368 } 369 STAILQ_INIT(&fwe->xferlist); 370 for (i = 0; i < TX_MAX_QUEUE; i++) { 371 xfer = fw_xfer_alloc(M_FWE); 372 if (xfer == NULL) 373 break; 374 xfer->send.spd = tx_speed; 375 xfer->fc = fwe->fd.fc; 376 xfer->retry_req = fw_asybusy; 377 xfer->sc = (caddr_t)fwe; 378 xfer->act.hand = fwe_output_callback; 379 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 380 } 381 } else 382 xferq = fc->ir[fwe->dma_ch]; 383 384 385 /* start dma */ 386 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 387 fc->irx_enable(fc, fwe->dma_ch); 388 389 ifp->if_flags |= IFF_RUNNING; 390 ifp->if_flags &= ~IFF_OACTIVE; 391 392 FWE_POLL_REGISTER(fwe_poll, fwe, ifp); 393#if 0 394 /* attempt to start output */ 395 fwe_start(ifp); 396#endif 397} 398 399 400static int 401fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 402{ 403 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 404 struct ifstat *ifs = NULL; 405 int s, error, len; 406 407 switch (cmd) { 408 case SIOCSIFFLAGS: 409 s = splimp(); 410 if (ifp->if_flags & IFF_UP) { 411 if (!(ifp->if_flags & IFF_RUNNING)) 412 fwe_init(&fwe->eth_softc); 413 } else { 414 if (ifp->if_flags & IFF_RUNNING) 415 fwe_stop(fwe); 416 } 417 /* XXX keep promiscoud mode */ 418 ifp->if_flags |= IFF_PROMISC; 419 splx(s); 420 break; 421 case SIOCADDMULTI: 422 case SIOCDELMULTI: 423 break; 424 425 case SIOCGIFSTATUS: 426 s = splimp(); 427 ifs = (struct ifstat *)data; 428 len = strlen(ifs->ascii); 429 if (len < sizeof(ifs->ascii)) 430 snprintf(ifs->ascii + len, 431 sizeof(ifs->ascii) - len, 432 "\tch %d dma %d\n", 433 fwe->stream_ch, fwe->dma_ch); 434 splx(s); 435 break; 436#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 437 default: 438#else 439 case SIOCSIFADDR: 440 case SIOCGIFADDR: 441 case SIOCSIFMTU: 442#endif 443 s = splimp(); 444 error = ether_ioctl(ifp, cmd, data); 445 splx(s); 446 return (error); 447#if defined(__DragonFly__) || __FreeBSD_version < 500000 448 default: 449 return (EINVAL); 450#endif 451 } 452 453 return (0); 454} 455 456static void 457fwe_output_callback(struct fw_xfer *xfer) 458{ 459 struct fwe_softc *fwe; 460 struct ifnet *ifp; 461 int s; 462 463 fwe = (struct fwe_softc *)xfer->sc; 464 ifp = &fwe->fwe_if; 465 /* XXX error check */ 466 FWEDEBUG(ifp, "resp = %d\n", xfer->resp); 467 if (xfer->resp != 0) 468 ifp->if_oerrors ++; 469 470 m_freem(xfer->mbuf); 471 fw_xfer_unload(xfer); 472 473 s = splimp(); 474 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 475 splx(s); 476 477 /* for queue full */ 478 if (ifp->if_snd.ifq_head != NULL) 479 fwe_start(ifp); 480} 481 482static void 483fwe_start(struct ifnet *ifp) 484{ 485 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 486 int s; 487 488 FWEDEBUG(ifp, "starting\n"); 489 490 if (fwe->dma_ch < 0) { 491 struct mbuf *m = NULL; 492 493 FWEDEBUG(ifp, "not ready\n"); 494 495 s = splimp(); 496 do { 497 IF_DEQUEUE(&ifp->if_snd, m); 498 if (m != NULL) 499 m_freem(m); 500 ifp->if_oerrors ++; 501 } while (m != NULL); 502 splx(s); 503 504 return; 505 } 506 507 s = splimp(); 508 ifp->if_flags |= IFF_OACTIVE; 509 510 if (ifp->if_snd.ifq_len != 0) 511 fwe_as_output(fwe, ifp); 512 513 ifp->if_flags &= ~IFF_OACTIVE; 514 splx(s); 515} 516 517#define HDR_LEN 4 518#ifndef ETHER_ALIGN 519#define ETHER_ALIGN 2 520#endif 521/* Async. stream output */ 522static void 523fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp) 524{ 525 struct mbuf *m; 526 struct fw_xfer *xfer; 527 struct fw_xferq *xferq; 528 struct fw_pkt *fp; 529 int i = 0; 530 531 xfer = NULL; 532 xferq = fwe->fd.fc->atq; 533 while (xferq->queued < xferq->maxq - 1) { 534 xfer = STAILQ_FIRST(&fwe->xferlist); 535 if (xfer == NULL) { 536 printf("if_fwe: lack of xfer\n"); 537 return; 538 } 539 IF_DEQUEUE(&ifp->if_snd, m); 540 if (m == NULL) 541 break; 542 STAILQ_REMOVE_HEAD(&fwe->xferlist, link); 543#if defined(__DragonFly__) || __FreeBSD_version < 500000 544 if (ifp->if_bpf != NULL) 545 bpf_mtap(ifp, m); 546#else 547 BPF_MTAP(ifp, m); 548#endif 549 550 /* keep ip packet alignment for alpha */ 551 M_PREPEND(m, ETHER_ALIGN, M_DONTWAIT); 552 fp = &xfer->send.hdr;
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554 fp->mode.stream.len = m->m_pkthdr.len; 555 xfer->mbuf = m; 556 xfer->send.pay_len = m->m_pkthdr.len; 557 558 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) { 559 /* error */ 560 ifp->if_oerrors ++; 561 /* XXX set error code */ 562 fwe_output_callback(xfer); 563 } else { 564 ifp->if_opackets ++; 565 i++; 566 } 567 } 568#if 0 569 if (i > 1) 570 printf("%d queued\n", i); 571#endif 572 if (i > 0) 573 xferq->start(fwe->fd.fc); 574} 575 576/* Async. stream output */ 577static void 578fwe_as_input(struct fw_xferq *xferq) 579{ 580 struct mbuf *m, *m0; 581 struct ifnet *ifp; 582 struct fwe_softc *fwe; 583 struct fw_bulkxfer *sxfer; 584 struct fw_pkt *fp; 585 u_char *c; 586#if defined(__DragonFly__) || __FreeBSD_version < 500000 587 struct ether_header *eh; 588#endif 589 590 fwe = (struct fwe_softc *)xferq->sc; 591 ifp = &fwe->fwe_if; 592#if 0 593 FWE_POLL_REGISTER(fwe_poll, fwe, ifp); 594#endif 595 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 596 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 597 fp = mtod(sxfer->mbuf, struct fw_pkt *); 598 if (fwe->fd.fc->irx_post != NULL) 599 fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld); 600 m = sxfer->mbuf; 601 602 /* insert new rbuf */ 603 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 604 if (m0 != NULL) { 605 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 606 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 607 } else 608 printf("fwe_as_input: m_getcl failed\n"); 609 610 if (sxfer->resp != 0 || fp->mode.stream.len < 611 ETHER_ALIGN + sizeof(struct ether_header)) { 612 m_freem(m); 613 ifp->if_ierrors ++; 614 continue; 615 } 616 617 m->m_data += HDR_LEN + ETHER_ALIGN; 618 c = mtod(m, char *); 619#if defined(__DragonFly__) || __FreeBSD_version < 500000 620 eh = (struct ether_header *)c; 621 m->m_data += sizeof(struct ether_header); 622#endif 623 m->m_len = m->m_pkthdr.len = 624 fp->mode.stream.len - ETHER_ALIGN; 625 m->m_pkthdr.rcvif = ifp; 626#if 0 627 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n" 628 "%02x %02x %02x %02x %02x %02x\n" 629 "%02x %02x %02x %02x\n" 630 "%02x %02x %02x %02x\n" 631 "%02x %02x %02x %02x\n" 632 "%02x %02x %02x %02x\n", 633 c[0], c[1], c[2], c[3], c[4], c[5], 634 c[6], c[7], c[8], c[9], c[10], c[11], 635 c[12], c[13], c[14], c[15], 636 c[16], c[17], c[18], c[19], 637 c[20], c[21], c[22], c[23], 638 c[20], c[21], c[22], c[23] 639 ); 640#endif 641#if defined(__DragonFly__) || __FreeBSD_version < 500000 642 ether_input(ifp, eh, m); 643#else 644 (*ifp->if_input)(ifp, m); 645#endif 646 ifp->if_ipackets ++; 647 } 648 if (STAILQ_FIRST(&xferq->stfree) != NULL) 649 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch); 650} 651 652 653static devclass_t fwe_devclass; 654 655static device_method_t fwe_methods[] = { 656 /* device interface */ 657 DEVMETHOD(device_identify, fwe_identify), 658 DEVMETHOD(device_probe, fwe_probe), 659 DEVMETHOD(device_attach, fwe_attach), 660 DEVMETHOD(device_detach, fwe_detach), 661 { 0, 0 } 662}; 663 664static driver_t fwe_driver = { 665 "fwe", 666 fwe_methods, 667 sizeof(struct fwe_softc), 668}; 669 670 671#ifdef __DragonFly__ 672DECLARE_DUMMY_MODULE(fwe); 673#endif 674DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0); 675MODULE_VERSION(fwe, 1); 676MODULE_DEPEND(fwe, firewire, 1, 1, 1);
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