if_fwip.c revision 1.20
1 /* $NetBSD: if_fwip.c,v 1.20 2009/12/06 22:56:56 dyoung Exp $ */ 2 /*- 3 * Copyright (c) 2004 4 * Doug Rabson 5 * Copyright (c) 2002-2003 6 * Hidetoshi Shimokawa. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * 19 * This product includes software developed by Hidetoshi Shimokawa. 20 * 21 * 4. Neither the name of the author nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * $FreeBSD: src/sys/dev/firewire/if_fwip.c,v 1.16 2007/06/06 14:31:36 simokawa Exp $ 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: if_fwip.c,v 1.20 2009/12/06 22:56:56 dyoung Exp $"); 42 43 #ifdef HAVE_KERNEL_OPTION_HEADERS 44 #include "opt_device_polling.h" 45 #include "opt_inet.h" 46 #endif 47 48 #if defined(__FreeBSD__) 49 #include <sys/param.h> 50 #include <sys/kernel.h> 51 #include <sys/malloc.h> 52 #include <sys/mbuf.h> 53 #include <sys/socket.h> 54 #include <sys/sockio.h> 55 #include <sys/sysctl.h> 56 #include <sys/systm.h> 57 #include <sys/taskqueue.h> 58 #include <sys/module.h> 59 #include <sys/bus.h> 60 #include <sys/bus.h> 61 62 #include <net/bpf.h> 63 #include <net/if.h> 64 #include <net/firewire.h> 65 #include <net/if_arp.h> 66 #include <net/if_types.h> 67 #ifdef __DragonFly__ 68 #include <bus/firewire/fw_port.h> 69 #include <bus/firewire/firewire.h> 70 #include <bus/firewire/firewirereg.h> 71 #include "if_fwipvar.h" 72 #else 73 #include <dev/firewire/fw_port.h> 74 #include <dev/firewire/firewire.h> 75 #include <dev/firewire/firewirereg.h> 76 #include <dev/firewire/iec13213.h> 77 #include <dev/firewire/if_fwipvar.h> 78 #endif 79 #elif defined(__NetBSD__) 80 #include <sys/param.h> 81 #include <sys/device.h> 82 #include <sys/errno.h> 83 #include <sys/malloc.h> 84 #include <sys/mbuf.h> 85 #include <sys/sysctl.h> 86 87 #include <sys/bus.h> 88 89 #include <net/if.h> 90 #include <net/if_ieee1394.h> 91 #include <net/if_types.h> 92 93 #include <dev/ieee1394/fw_port.h> 94 #include <dev/ieee1394/firewire.h> 95 #include <dev/ieee1394/firewirereg.h> 96 #include <dev/ieee1394/iec13213.h> 97 #include <dev/ieee1394/if_fwipvar.h> 98 #endif 99 100 /* 101 * We really need a mechanism for allocating regions in the FIFO 102 * address space. We pick a address in the OHCI controller's 'middle' 103 * address space. This means that the controller will automatically 104 * send responses for us, which is fine since we don't have any 105 * important information to put in the response anyway. 106 */ 107 #define INET_FIFO 0xfffe00000000LL 108 109 #if defined(__FreeBSD__) 110 #define FWIPDEBUG if (fwipdebug) if_printf 111 #elif defined(__NetBSD__) 112 #define FWIPDEBUG if (fwipdebug) aprint_debug_ifnet 113 #endif 114 #define TX_MAX_QUEUE (FWMAXQUEUE - 1) 115 116 #if defined(__NetBSD__) 117 int fwipmatch (device_t, cfdata_t, void *); 118 void fwipattach (device_t, device_t, void *); 119 int fwipdetach (device_t, int); 120 int fwipactivate (device_t, enum devact); 121 122 #endif 123 /* network interface */ 124 static void fwip_start (struct ifnet *); 125 static int fwip_ioctl (struct ifnet *, u_long, void *); 126 #if defined(__FreeBSD__) 127 static void fwip_init(void *); 128 static void fwip_stop(struct fwip_softc *); 129 #elif defined(__NetBSD__) 130 static int fwip_init(struct ifnet *); 131 static void fwip_stop(struct ifnet *, int); 132 #endif 133 134 static void fwip_post_busreset (void *); 135 static void fwip_output_callback (struct fw_xfer *); 136 static void fwip_async_output (struct fwip_softc *, struct ifnet *); 137 static void fwip_start_send (void *, int); 138 static void fwip_stream_input (struct fw_xferq *); 139 static void fwip_unicast_input(struct fw_xfer *); 140 141 static int fwipdebug = 0; 142 static int broadcast_channel = 0xc0 | 0x1f; /* tag | channel(XXX) */ 143 static int tx_speed = 2; 144 static int rx_queue_len = FWMAXQUEUE; 145 146 #if defined(__FreeBSD__) 147 MALLOC_DEFINE(M_FWIP, "if_fwip", "IP over FireWire interface"); 148 SYSCTL_INT(_debug, OID_AUTO, if_fwip_debug, CTLFLAG_RW, &fwipdebug, 0, ""); 149 SYSCTL_DECL(_hw_firewire); 150 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwip, CTLFLAG_RD, 0, 151 "Firewire ip subsystem"); 152 SYSCTL_INT(_hw_firewire_fwip, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len, 153 0, "Length of the receive queue"); 154 155 TUNABLE_INT("hw.firewire.fwip.rx_queue_len", &rx_queue_len); 156 #elif defined(__NetBSD__) 157 MALLOC_DEFINE(M_FWIP, "if_fwip", "IP over IEEE1394 interface"); 158 /* 159 * Setup sysctl(3) MIB, hw.fwip.* 160 * 161 * TBD condition CTLFLAG_PERMANENT on being a module or not 162 */ 163 SYSCTL_SETUP(sysctl_fwip, "sysctl fwip(4) subtree setup") 164 { 165 int rc, fwip_node_num; 166 const struct sysctlnode *node; 167 168 if ((rc = sysctl_createv(clog, 0, NULL, NULL, 169 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 170 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) { 171 goto err; 172 } 173 174 if ((rc = sysctl_createv(clog, 0, NULL, &node, 175 CTLFLAG_PERMANENT, CTLTYPE_NODE, "fwip", 176 SYSCTL_DESCR("fwip controls"), 177 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) { 178 goto err; 179 } 180 fwip_node_num = node->sysctl_num; 181 182 /* fwip RX queue length */ 183 if ((rc = sysctl_createv(clog, 0, NULL, &node, 184 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 185 "rx_queue_len", SYSCTL_DESCR("Length of the receive queue"), 186 NULL, 0, &rx_queue_len, 187 0, CTL_HW, fwip_node_num, CTL_CREATE, CTL_EOL)) != 0) { 188 goto err; 189 } 190 191 /* fwip RX queue length */ 192 if ((rc = sysctl_createv(clog, 0, NULL, &node, 193 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 194 "if_fwip_debug", SYSCTL_DESCR("fwip driver debug flag"), 195 NULL, 0, &fwipdebug, 196 0, CTL_HW, fwip_node_num, CTL_CREATE, CTL_EOL)) != 0) { 197 goto err; 198 } 199 200 return; 201 202 err: 203 printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 204 } 205 #endif 206 207 #ifdef DEVICE_POLLING 208 static poll_handler_t fwip_poll; 209 210 static void 211 fwip_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 212 { 213 struct fwip_softc *fwip; 214 struct firewire_comm *fc; 215 216 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 217 return; 218 219 fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 220 fc = fwip->fd.fc; 221 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 222 } 223 #endif /* DEVICE_POLLING */ 224 #if defined(__FreeBSD__) 225 static void 226 fwip_identify(driver_t *driver, device_t parent) 227 { 228 BUS_ADD_CHILD(parent, 0, "fwip", fw_get_unit(parent)); 229 } 230 231 static int 232 fwip_probe(device_t dev) 233 { 234 device_t pa; 235 236 pa = device_get_parent(dev); 237 if(fw_get_unit(dev) != fw_get_unit(pa)){ 238 return(ENXIO); 239 } 240 241 device_set_desc(dev, "IP over FireWire"); 242 return (0); 243 } 244 #elif defined(__NetBSD__) 245 int 246 fwipmatch(device_t parent, cfdata_t cf, void *aux) 247 { 248 struct fw_attach_args *fwa = aux; 249 250 if (strcmp(fwa->name, "fwip") == 0) 251 return (1); 252 return (0); 253 } 254 #endif 255 256 FW_ATTACH(fwip) 257 { 258 FW_ATTACH_START(fwip, fwip, fwa); 259 FWIP_ATTACH_START; 260 struct ifnet *ifp; 261 int s; 262 263 FWIP_ATTACH_SETUP; 264 265 ifp = fwip->fw_softc.fwip_ifp; 266 if (ifp == NULL) 267 FW_ATTACH_RETURN(ENOSPC); 268 269 fw_mtx_init(&fwip->mtx, "fwip", NULL, MTX_DEF); 270 /* XXX */ 271 fwip->dma_ch = -1; 272 273 fwip->fd.fc = fwa->fc; 274 if (tx_speed < 0) 275 tx_speed = fwip->fd.fc->speed; 276 277 fwip->fd.post_explore = NULL; 278 fwip->fd.post_busreset = fwip_post_busreset; 279 fwip->fw_softc.fwip = fwip; 280 FW_TASK_INIT(&fwip->start_send, 0, fwip_start_send, fwip); 281 282 /* 283 * Encode our hardware the way that arp likes it. 284 */ 285 hwaddr->sender_unique_ID_hi = htonl(fwip->fd.fc->eui.hi); 286 hwaddr->sender_unique_ID_lo = htonl(fwip->fd.fc->eui.lo); 287 hwaddr->sender_max_rec = fwip->fd.fc->maxrec; 288 hwaddr->sspd = fwip->fd.fc->speed; 289 hwaddr->sender_unicast_FIFO_hi = htons((uint16_t)(INET_FIFO >> 32)); 290 hwaddr->sender_unicast_FIFO_lo = htonl((uint32_t)INET_FIFO); 291 292 /* fill the rest and attach interface */ 293 ifp->if_softc = &fwip->fw_softc; 294 295 #if __FreeBSD_version >= 501113 || defined(__DragonFly__) || defined(__NetBSD__) 296 IF_INITNAME(ifp, dev, unit); 297 #else 298 ifp->if_unit = unit; 299 ifp->if_name = "fwip"; 300 #endif 301 #if defined(__NetBSD__) 302 IFQ_SET_READY(&ifp->if_snd); 303 #endif 304 SET_IFFUNC(ifp, fwip_start, fwip_ioctl, fwip_init, fwip_stop); 305 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 306 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 307 #ifdef DEVICE_POLLING 308 ifp->if_capabilities |= IFCAP_POLLING; 309 #endif 310 311 s = splfwnet(); 312 FIREWIRE_IFATTACH(ifp, hwaddr); 313 splx(s); 314 315 #if defined(__NetBSD__) 316 if (!pmf_device_register(self, NULL, NULL)) 317 aprint_error_dev(self, "couldn't establish power handler\n"); 318 else 319 pmf_class_network_register(self, ifp); 320 #endif 321 322 FWIPDEBUG(ifp, "interface created\n"); 323 FW_ATTACH_RETURN(0); 324 } 325 326 IF_STOP(fwip) 327 { 328 IF_STOP_START(fwip, ifp, fwip); 329 struct firewire_comm *fc; 330 struct fw_xferq *xferq; 331 struct fw_xfer *xfer, *next; 332 int i; 333 334 fc = fwip->fd.fc; 335 336 if (fwip->dma_ch >= 0) { 337 xferq = fc->ir[fwip->dma_ch]; 338 339 if (xferq->flag & FWXFERQ_RUNNING) 340 fc->irx_disable(fc, fwip->dma_ch); 341 xferq->flag &= 342 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 343 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 344 xferq->hand = NULL; 345 346 for (i = 0; i < xferq->bnchunk; i ++) 347 m_freem(xferq->bulkxfer[i].mbuf); 348 free(xferq->bulkxfer, M_FWIP); 349 350 fw_bindremove(fc, &fwip->fwb); 351 for (xfer = STAILQ_FIRST(&fwip->fwb.xferlist); xfer != NULL; 352 xfer = next) { 353 next = STAILQ_NEXT(xfer, link); 354 fw_xfer_free(xfer); 355 } 356 357 for (xfer = STAILQ_FIRST(&fwip->xferlist); xfer != NULL; 358 xfer = next) { 359 next = STAILQ_NEXT(xfer, link); 360 fw_xfer_free(xfer); 361 } 362 STAILQ_INIT(&fwip->xferlist); 363 364 xferq->bulkxfer = NULL; 365 fwip->dma_ch = -1; 366 } 367 368 #if defined(__FreeBSD__) 369 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 370 #elif defined(__NetBSD__) 371 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 372 #endif 373 } 374 375 FW_DETACH(fwip) 376 { 377 IF_DETACH_START(fwip, fwip); 378 struct ifnet *ifp; 379 int s; 380 381 ifp = fwip->fw_softc.fwip_ifp; 382 383 #ifdef DEVICE_POLLING 384 if (ifp->if_capenable & IFCAP_POLLING) 385 ether_poll_deregister(ifp); 386 #endif 387 388 s = splfwnet(); 389 390 FWIP_STOP(fwip); 391 FIREWIRE_IFDETACH(ifp); 392 fw_mtx_destroy(&fwip->mtx); 393 394 splx(s); 395 return 0; 396 } 397 398 int 399 fwipactivate(device_t self, enum devact act) 400 { 401 struct fwip_softc *fwip = device_private(self); 402 403 switch (act) { 404 case DVACT_DEACTIVATE: 405 if_deactivate(fwip->fw_softc.fwip_ifp); 406 return 0; 407 default: 408 return EOPNOTSUPP; 409 } 410 } 411 412 IF_INIT(fwip) 413 { 414 IF_INIT_START(fwip, fwip, ifp); 415 struct firewire_comm *fc; 416 struct fw_xferq *xferq; 417 struct fw_xfer *xfer; 418 struct mbuf *m; 419 int i; 420 421 FWIPDEBUG(ifp, "initializing\n"); 422 423 fc = fwip->fd.fc; 424 #define START 0 425 if (fwip->dma_ch < 0) { 426 fwip->dma_ch = fw_open_isodma(fc, /* tx */0); 427 if (fwip->dma_ch < 0) 428 IF_INIT_RETURN(ENXIO); 429 xferq = fc->ir[fwip->dma_ch]; 430 xferq->flag |= 431 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_STREAM; 432 xferq->flag &= ~0xff; 433 xferq->flag |= broadcast_channel & 0xff; 434 /* register fwip_input handler */ 435 xferq->sc = (void *) fwip; 436 xferq->hand = fwip_stream_input; 437 xferq->bnchunk = rx_queue_len; 438 xferq->bnpacket = 1; 439 xferq->psize = MCLBYTES; 440 xferq->queued = 0; 441 xferq->buf = NULL; 442 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 443 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 444 M_FWIP, M_WAITOK); 445 if (xferq->bulkxfer == NULL) { 446 printf("if_fwip: malloc failed\n"); 447 IF_INIT_RETURN(ENOMEM); 448 } 449 STAILQ_INIT(&xferq->stvalid); 450 STAILQ_INIT(&xferq->stfree); 451 STAILQ_INIT(&xferq->stdma); 452 xferq->stproc = NULL; 453 for (i = 0; i < xferq->bnchunk; i ++) { 454 m = 455 #if defined(__DragonFly__) || __FreeBSD_version < 500000 456 m_getcl(M_WAIT, MT_DATA, M_PKTHDR); 457 #else 458 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 459 #endif 460 xferq->bulkxfer[i].mbuf = m; 461 if (m != NULL) { 462 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 463 STAILQ_INSERT_TAIL(&xferq->stfree, 464 &xferq->bulkxfer[i], link); 465 } else 466 printf("fwip_as_input: m_getcl failed\n"); 467 } 468 469 fwip->fwb.start = INET_FIFO; 470 fwip->fwb.end = INET_FIFO + 16384; /* S3200 packet size */ 471 472 /* pre-allocate xfer */ 473 STAILQ_INIT(&fwip->fwb.xferlist); 474 for (i = 0; i < rx_queue_len; i ++) { 475 xfer = fw_xfer_alloc(M_FWIP); 476 if (xfer == NULL) 477 break; 478 m = m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 479 xfer->recv.payload = mtod(m, uint32_t *); 480 xfer->recv.pay_len = MCLBYTES; 481 xfer->hand = fwip_unicast_input; 482 xfer->fc = fc; 483 xfer->sc = (void *)fwip; 484 xfer->mbuf = m; 485 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 486 } 487 fw_bindadd(fc, &fwip->fwb); 488 489 STAILQ_INIT(&fwip->xferlist); 490 for (i = 0; i < TX_MAX_QUEUE; i++) { 491 xfer = fw_xfer_alloc(M_FWIP); 492 if (xfer == NULL) 493 break; 494 xfer->send.spd = tx_speed; 495 xfer->fc = fwip->fd.fc; 496 xfer->sc = (void *)fwip; 497 xfer->hand = fwip_output_callback; 498 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 499 } 500 } else 501 xferq = fc->ir[fwip->dma_ch]; 502 503 fwip->last_dest.hi = 0; 504 fwip->last_dest.lo = 0; 505 506 /* start dma */ 507 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 508 fc->irx_enable(fc, fwip->dma_ch); 509 510 #if defined(__FreeBSD__) 511 ifp->if_drv_flags |= IFF_DRV_RUNNING; 512 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 513 #elif defined(__NetBSD__) 514 ifp->if_flags |= IFF_RUNNING; 515 ifp->if_flags &= ~IFF_OACTIVE; 516 #endif 517 518 #if 0 519 /* attempt to start output */ 520 fwip_start(ifp); 521 #endif 522 IF_INIT_RETURN(0); 523 } 524 525 static int 526 fwip_ioctl(struct ifnet *ifp, u_long cmd, void *data) 527 { 528 IF_IOCTL_START(fwip, fwip); 529 int s, error = 0; 530 531 switch (cmd) { 532 case SIOCSIFFLAGS: 533 s = splfwnet(); 534 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 535 ; 536 else if (ifp->if_flags & IFF_UP) { 537 if (!(ifp->if_flags & IFF_RUNNING)) 538 FWIP_INIT(fwip); 539 } else { 540 if (ifp->if_flags & IFF_RUNNING) 541 FWIP_STOP(fwip); 542 } 543 splx(s); 544 break; 545 case SIOCADDMULTI: 546 case SIOCDELMULTI: 547 break; 548 case SIOCSIFCAP: 549 if ((error = FIREWIRE_IOCTL(ifp, cmd, data)) != ENETRESET) 550 break; 551 error = 0; 552 #ifdef DEVICE_POLLING 553 { 554 struct ifreq *ifr = (struct ifreq *) data; 555 struct firewire_comm *fc = fc = fwip->fd.fc; 556 557 if (ifr->ifr_reqcap & IFCAP_POLLING && 558 !(ifp->if_capenable & IFCAP_POLLING)) { 559 error = ether_poll_register(fwip_poll, ifp); 560 if (error) 561 return(error); 562 /* Disable interrupts */ 563 fc->set_intr(fc, 0); 564 ifp->if_capenable |= IFCAP_POLLING; 565 return (error); 566 567 } 568 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 569 ifp->if_capenable & IFCAP_POLLING) { 570 error = ether_poll_deregister(ifp); 571 /* Enable interrupts. */ 572 fc->set_intr(fc, 1); 573 ifp->if_capenable &= ~IFCAP_POLLING; 574 return (error); 575 } 576 } 577 #endif /* DEVICE_POLLING */ 578 break; 579 580 default: 581 s = splfwnet(); 582 error = FIREWIRE_IOCTL(ifp, cmd, data); 583 splx(s); 584 return (error); 585 } 586 587 return error; 588 } 589 590 static void 591 fwip_post_busreset(void *arg) 592 { 593 struct fwip_softc *fwip = arg; 594 struct crom_src *src; 595 struct crom_chunk *root; 596 597 src = fwip->fd.fc->crom_src; 598 root = fwip->fd.fc->crom_root; 599 600 /* RFC2734 IPv4 over IEEE1394 */ 601 memset(&fwip->unit4, 0, sizeof(struct crom_chunk)); 602 crom_add_chunk(src, root, &fwip->unit4, CROM_UDIR); 603 crom_add_entry(&fwip->unit4, CSRKEY_SPEC, CSRVAL_IETF); 604 crom_add_simple_text(src, &fwip->unit4, &fwip->spec4, "IANA"); 605 crom_add_entry(&fwip->unit4, CSRKEY_VER, 1); 606 crom_add_simple_text(src, &fwip->unit4, &fwip->ver4, "IPv4"); 607 608 /* RFC3146 IPv6 over IEEE1394 */ 609 memset(&fwip->unit6, 0, sizeof(struct crom_chunk)); 610 crom_add_chunk(src, root, &fwip->unit6, CROM_UDIR); 611 crom_add_entry(&fwip->unit6, CSRKEY_SPEC, CSRVAL_IETF); 612 crom_add_simple_text(src, &fwip->unit6, &fwip->spec6, "IANA"); 613 crom_add_entry(&fwip->unit6, CSRKEY_VER, 2); 614 crom_add_simple_text(src, &fwip->unit6, &fwip->ver6, "IPv6"); 615 616 fwip->last_dest.hi = 0; 617 fwip->last_dest.lo = 0; 618 FIREWIRE_BUSRESET(fwip->fw_softc.fwip_ifp); 619 } 620 621 static void 622 fwip_output_callback(struct fw_xfer *xfer) 623 { 624 struct fwip_softc *fwip; 625 struct ifnet *ifp; 626 int s; 627 628 fwip = (struct fwip_softc *)xfer->sc; 629 ifp = fwip->fw_softc.fwip_ifp; 630 /* XXX error check */ 631 FWIPDEBUG(ifp, "resp = %d\n", xfer->resp); 632 if (xfer->resp != 0) 633 ifp->if_oerrors ++; 634 635 m_freem(xfer->mbuf); 636 fw_xfer_unload(xfer); 637 638 s = splfwnet(); 639 FWIP_LOCK(fwip); 640 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 641 FWIP_UNLOCK(fwip); 642 splx(s); 643 644 /* for queue full */ 645 if (ifp->if_snd.ifq_head != NULL) { 646 fwip_start(ifp); 647 } 648 } 649 650 static void 651 fwip_start(struct ifnet *ifp) 652 { 653 struct fwip_softc *fwip = 654 ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 655 int s; 656 657 FWIPDEBUG(ifp, "starting\n"); 658 659 if (fwip->dma_ch < 0) { 660 struct mbuf *m = NULL; 661 662 FWIPDEBUG(ifp, "not ready\n"); 663 664 s = splfwnet(); 665 do { 666 IF_DEQUEUE(&ifp->if_snd, m); 667 if (m != NULL) 668 m_freem(m); 669 ifp->if_oerrors ++; 670 } while (m != NULL); 671 splx(s); 672 673 return; 674 } 675 676 s = splfwnet(); 677 #if defined(__FreeBSD__) 678 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 679 #elif defined(__NetBSD__) 680 ifp->if_flags |= IFF_OACTIVE; 681 #endif 682 683 if (ifp->if_snd.ifq_len != 0) 684 fwip_async_output(fwip, ifp); 685 686 #if defined(__FreeBSD__) 687 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 688 #elif defined(__NetBSD__) 689 ifp->if_flags &= ~IFF_OACTIVE; 690 #endif 691 splx(s); 692 } 693 694 /* Async. stream output */ 695 static void 696 fwip_async_output(struct fwip_softc *fwip, struct ifnet *ifp) 697 { 698 struct firewire_comm *fc = fwip->fd.fc; 699 struct mbuf *m; 700 struct m_tag *mtag; 701 struct fw_hwaddr *destfw; 702 struct fw_xfer *xfer; 703 struct fw_xferq *xferq; 704 struct fw_pkt *fp; 705 uint16_t nodeid; 706 int error; 707 int i = 0; 708 709 xfer = NULL; 710 xferq = fc->atq; 711 while ((xferq->queued < xferq->maxq - 1) && 712 (ifp->if_snd.ifq_head != NULL)) { 713 FWIP_LOCK(fwip); 714 xfer = STAILQ_FIRST(&fwip->xferlist); 715 if (xfer == NULL) { 716 FWIP_UNLOCK(fwip); 717 #if 0 718 printf("if_fwip: lack of xfer\n"); 719 #endif 720 break; 721 } 722 STAILQ_REMOVE_HEAD(&fwip->xferlist, link); 723 FWIP_UNLOCK(fwip); 724 725 IF_DEQUEUE(&ifp->if_snd, m); 726 if (m == NULL) { 727 FWIP_LOCK(fwip); 728 STAILQ_INSERT_HEAD(&fwip->xferlist, xfer, link); 729 FWIP_UNLOCK(fwip); 730 break; 731 } 732 733 /* 734 * Dig out the link-level address which 735 * firewire_output got via arp or neighbour 736 * discovery. If we don't have a link-level address, 737 * just stick the thing on the broadcast channel. 738 */ 739 mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, 0); 740 if (mtag == NULL) 741 destfw = 0; 742 else 743 destfw = (struct fw_hwaddr *) (mtag + 1); 744 745 /* 746 * We don't do any bpf stuff here - the generic code 747 * in firewire_output gives the packet to bpf before 748 * it adds the link-level encapsulation. 749 */ 750 751 /* 752 * Put the mbuf in the xfer early in case we hit an 753 * error case below - fwip_output_callback will free 754 * the mbuf. 755 */ 756 xfer->mbuf = m; 757 758 /* 759 * We use the arp result (if any) to add a suitable firewire 760 * packet header before handing off to the bus. 761 */ 762 fp = &xfer->send.hdr; 763 nodeid = FWLOCALBUS | fc->nodeid; 764 if ((m->m_flags & M_BCAST) || !destfw) { 765 /* 766 * Broadcast packets are sent as GASP packets with 767 * specifier ID 0x00005e, version 1 on the broadcast 768 * channel. To be conservative, we send at the 769 * slowest possible speed. 770 */ 771 uint32_t *p; 772 773 M_PREPEND(m, 2*sizeof(uint32_t), M_DONTWAIT); 774 p = mtod(m, uint32_t *); 775 fp->mode.stream.len = m->m_pkthdr.len; 776 fp->mode.stream.chtag = broadcast_channel; 777 fp->mode.stream.tcode = FWTCODE_STREAM; 778 fp->mode.stream.sy = 0; 779 xfer->send.spd = 0; 780 p[0] = htonl(nodeid << 16); 781 p[1] = htonl((0x5e << 24) | 1); 782 } else { 783 /* 784 * Unicast packets are sent as block writes to the 785 * target's unicast fifo address. If we can't 786 * find the node address, we just give up. We 787 * could broadcast it but that might overflow 788 * the packet size limitations due to the 789 * extra GASP header. Note: the hardware 790 * address is stored in network byte order to 791 * make life easier for ARP. 792 */ 793 struct fw_device *fd; 794 struct fw_eui64 eui; 795 796 eui.hi = ntohl(destfw->sender_unique_ID_hi); 797 eui.lo = ntohl(destfw->sender_unique_ID_lo); 798 if (fwip->last_dest.hi != eui.hi || 799 fwip->last_dest.lo != eui.lo) { 800 fd = fw_noderesolve_eui64(fc, &eui); 801 if (!fd) { 802 /* error */ 803 ifp->if_oerrors ++; 804 /* XXX set error code */ 805 fwip_output_callback(xfer); 806 continue; 807 808 } 809 fwip->last_hdr.mode.wreqb.dst = FWLOCALBUS | fd->dst; 810 fwip->last_hdr.mode.wreqb.tlrt = 0; 811 fwip->last_hdr.mode.wreqb.tcode = FWTCODE_WREQB; 812 fwip->last_hdr.mode.wreqb.pri = 0; 813 fwip->last_hdr.mode.wreqb.src = nodeid; 814 fwip->last_hdr.mode.wreqb.dest_hi = 815 ntohs(destfw->sender_unicast_FIFO_hi); 816 fwip->last_hdr.mode.wreqb.dest_lo = 817 ntohl(destfw->sender_unicast_FIFO_lo); 818 fwip->last_hdr.mode.wreqb.extcode = 0; 819 fwip->last_dest = eui; 820 } 821 822 fp->mode.wreqb = fwip->last_hdr.mode.wreqb; 823 fp->mode.wreqb.len = m->m_pkthdr.len; 824 xfer->send.spd = min(destfw->sspd, fc->speed); 825 } 826 827 xfer->send.pay_len = m->m_pkthdr.len; 828 829 error = fw_asyreq(fc, -1, xfer); 830 if (error == EAGAIN) { 831 /* 832 * We ran out of tlabels - requeue the packet 833 * for later transmission. 834 */ 835 xfer->mbuf = 0; 836 FWIP_LOCK(fwip); 837 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 838 FWIP_UNLOCK(fwip); 839 IF_PREPEND(&ifp->if_snd, m); 840 break; 841 } 842 if (error) { 843 /* error */ 844 ifp->if_oerrors ++; 845 /* XXX set error code */ 846 fwip_output_callback(xfer); 847 continue; 848 } else { 849 ifp->if_opackets ++; 850 i++; 851 } 852 } 853 #if 0 854 if (i > 1) 855 printf("%d queued\n", i); 856 #endif 857 if (i > 0) 858 xferq->start(fc); 859 } 860 861 static void 862 fwip_start_send (void *arg, int count) 863 { 864 struct fwip_softc *fwip = arg; 865 866 fwip->fd.fc->atq->start(fwip->fd.fc); 867 } 868 869 /* Async. stream output */ 870 static void 871 fwip_stream_input(struct fw_xferq *xferq) 872 { 873 struct mbuf *m, *m0; 874 struct m_tag *mtag; 875 struct ifnet *ifp; 876 struct fwip_softc *fwip; 877 struct fw_bulkxfer *sxfer; 878 struct fw_pkt *fp; 879 uint16_t src; 880 uint32_t *p; 881 882 fwip = (struct fwip_softc *)xferq->sc; 883 ifp = fwip->fw_softc.fwip_ifp; 884 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 885 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 886 fp = mtod(sxfer->mbuf, struct fw_pkt *); 887 if (fwip->fd.fc->irx_post != NULL) 888 fwip->fd.fc->irx_post(fwip->fd.fc, fp->mode.ld); 889 m = sxfer->mbuf; 890 891 /* insert new rbuf */ 892 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 893 if (m0 != NULL) { 894 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 895 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 896 } else 897 printf("fwip_as_input: m_getcl failed\n"); 898 899 /* 900 * We must have a GASP header - leave the 901 * encapsulation sanity checks to the generic 902 * code. Remeber that we also have the firewire async 903 * stream header even though that isn't accounted for 904 * in mode.stream.len. 905 */ 906 if (sxfer->resp != 0 || fp->mode.stream.len < 907 2*sizeof(uint32_t)) { 908 m_freem(m); 909 ifp->if_ierrors ++; 910 continue; 911 } 912 m->m_len = m->m_pkthdr.len = fp->mode.stream.len 913 + sizeof(fp->mode.stream); 914 915 /* 916 * If we received the packet on the broadcast channel, 917 * mark it as broadcast, otherwise we assume it must 918 * be multicast. 919 */ 920 if (fp->mode.stream.chtag == broadcast_channel) 921 m->m_flags |= M_BCAST; 922 else 923 m->m_flags |= M_MCAST; 924 925 /* 926 * Make sure we recognise the GASP specifier and 927 * version. 928 */ 929 p = mtod(m, uint32_t *); 930 if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 0x00005e 931 || (ntohl(p[2]) & 0xffffff) != 1) { 932 FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n", 933 ntohl(p[1]), ntohl(p[2])); 934 m_freem(m); 935 ifp->if_ierrors ++; 936 continue; 937 } 938 939 /* 940 * Record the sender ID for possible BPF usage. 941 */ 942 src = ntohl(p[1]) >> 16; 943 if (bpf_peers_present(ifp->if_bpf)) { 944 mtag = m_tag_alloc(MTAG_FIREWIRE, 945 MTAG_FIREWIRE_SENDER_EUID, 946 2*sizeof(uint32_t), M_NOWAIT); 947 if (mtag) { 948 /* bpf wants it in network byte order */ 949 struct fw_device *fd; 950 uint32_t *p2 = (uint32_t *) (mtag + 1); 951 fd = fw_noderesolve_nodeid(fwip->fd.fc, 952 src & 0x3f); 953 if (fd) { 954 p2[0] = htonl(fd->eui.hi); 955 p2[1] = htonl(fd->eui.lo); 956 } else { 957 p2[0] = 0; 958 p2[1] = 0; 959 } 960 m_tag_prepend(m, mtag); 961 } 962 } 963 964 /* 965 * Trim off the GASP header 966 */ 967 m_adj(m, 3*sizeof(uint32_t)); 968 m->m_pkthdr.rcvif = ifp; 969 FIREWIRE_INPUT(ifp, m, src); 970 ifp->if_ipackets ++; 971 } 972 if (STAILQ_FIRST(&xferq->stfree) != NULL) 973 fwip->fd.fc->irx_enable(fwip->fd.fc, fwip->dma_ch); 974 } 975 976 static inline void 977 fwip_unicast_input_recycle(struct fwip_softc *fwip, struct fw_xfer *xfer) 978 { 979 struct mbuf *m; 980 981 /* 982 * We have finished with a unicast xfer. Allocate a new 983 * cluster and stick it on the back of the input queue. 984 */ 985 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 986 if (m == NULL) 987 printf("fwip_unicast_input_recycle: m_getcl failed\n"); 988 xfer->mbuf = m; 989 xfer->recv.payload = mtod(m, uint32_t *); 990 xfer->recv.pay_len = MCLBYTES; 991 xfer->mbuf = m; 992 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 993 } 994 995 static void 996 fwip_unicast_input(struct fw_xfer *xfer) 997 { 998 uint64_t address; 999 struct mbuf *m; 1000 struct m_tag *mtag; 1001 struct ifnet *ifp; 1002 struct fwip_softc *fwip; 1003 struct fw_pkt *fp; 1004 //struct fw_pkt *sfp; 1005 int rtcode; 1006 1007 fwip = (struct fwip_softc *)xfer->sc; 1008 ifp = fwip->fw_softc.fwip_ifp; 1009 m = xfer->mbuf; 1010 xfer->mbuf = 0; 1011 fp = &xfer->recv.hdr; 1012 1013 /* 1014 * Check the fifo address - we only accept addresses of 1015 * exactly INET_FIFO. 1016 */ 1017 address = ((uint64_t)fp->mode.wreqb.dest_hi << 32) 1018 | fp->mode.wreqb.dest_lo; 1019 if (fp->mode.wreqb.tcode != FWTCODE_WREQB) { 1020 rtcode = FWRCODE_ER_TYPE; 1021 } else if (address != INET_FIFO) { 1022 rtcode = FWRCODE_ER_ADDR; 1023 } else { 1024 rtcode = FWRCODE_COMPLETE; 1025 } 1026 1027 /* 1028 * Pick up a new mbuf and stick it on the back of the receive 1029 * queue. 1030 */ 1031 fwip_unicast_input_recycle(fwip, xfer); 1032 1033 /* 1034 * If we've already rejected the packet, give up now. 1035 */ 1036 if (rtcode != FWRCODE_COMPLETE) { 1037 m_freem(m); 1038 ifp->if_ierrors ++; 1039 return; 1040 } 1041 1042 if (bpf_peers_present(ifp->if_bpf)) { 1043 /* 1044 * Record the sender ID for possible BPF usage. 1045 */ 1046 mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_SENDER_EUID, 1047 2*sizeof(uint32_t), M_NOWAIT); 1048 if (mtag) { 1049 /* bpf wants it in network byte order */ 1050 struct fw_device *fd; 1051 uint32_t *p = (uint32_t *) (mtag + 1); 1052 fd = fw_noderesolve_nodeid(fwip->fd.fc, 1053 fp->mode.wreqb.src & 0x3f); 1054 if (fd) { 1055 p[0] = htonl(fd->eui.hi); 1056 p[1] = htonl(fd->eui.lo); 1057 } else { 1058 p[0] = 0; 1059 p[1] = 0; 1060 } 1061 m_tag_prepend(m, mtag); 1062 } 1063 } 1064 1065 /* 1066 * Hand off to the generic encapsulation code. We don't use 1067 * ifp->if_input so that we can pass the source nodeid as an 1068 * argument to facilitate link-level fragment reassembly. 1069 */ 1070 m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len; 1071 m->m_pkthdr.rcvif = ifp; 1072 FIREWIRE_INPUT(ifp, m, fp->mode.wreqb.src); 1073 ifp->if_ipackets ++; 1074 } 1075 1076 #if defined(__FreeBSD__) 1077 static devclass_t fwip_devclass; 1078 1079 static device_method_t fwip_methods[] = { 1080 /* device interface */ 1081 DEVMETHOD(device_identify, fwip_identify), 1082 DEVMETHOD(device_probe, fwip_probe), 1083 DEVMETHOD(device_attach, fwip_attach), 1084 DEVMETHOD(device_detach, fwip_detach), 1085 { 0, 0 } 1086 }; 1087 1088 static driver_t fwip_driver = { 1089 "fwip", 1090 fwip_methods, 1091 sizeof(struct fwip_softc), 1092 }; 1093 1094 1095 #ifdef __DragonFly__ 1096 DECLARE_DUMMY_MODULE(fwip); 1097 #endif 1098 DRIVER_MODULE(fwip, firewire, fwip_driver, fwip_devclass, 0, 0); 1099 MODULE_VERSION(fwip, 1); 1100 MODULE_DEPEND(fwip, firewire, 1, 1, 1); 1101 #elif defined(__NetBSD__) 1102 CFATTACH_DECL_NEW(fwip, sizeof(struct fwip_softc), 1103 fwipmatch, fwipattach, fwipdetach, NULL); 1104 #endif 1105
Indexes created Wed Sep 24 15:09:51 GMT 2025