if_fwip.c revision 130411
1/* 2 * Copyright (c) 2004 3 * Doug Rabson 4 * Copyright (c) 2002-2003 5 * Hidetoshi Shimokawa. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * 18 * This product includes software developed by Hidetoshi Shimokawa. 19 * 20 * 4. Neither the name of the author nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * $FreeBSD: head/sys/dev/firewire/if_fwip.c 130411 2004-06-13 13:58:00Z dfr $ 37 */ 38 39#include "opt_inet.h" 40 41#include <sys/param.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/taskqueue.h> 50#include <sys/module.h> 51#include <sys/bus.h> 52#include <machine/bus.h> 53 54#include <net/bpf.h> 55#include <net/if.h> 56#include <net/firewire.h> 57#include <net/if_arp.h> 58#ifdef __DragonFly__ 59#include <bus/firewire/firewire.h> 60#include <bus/firewire/firewirereg.h> 61#include "if_fwipvar.h" 62#else 63#include <dev/firewire/firewire.h> 64#include <dev/firewire/firewirereg.h> 65#include <dev/firewire/iec13213.h> 66#include <dev/firewire/if_fwipvar.h> 67#endif 68 69/* 70 * We really need a mechanism for allocating regions in the FIFO 71 * address space. We pick a address in the OHCI controller's 'middle' 72 * address space. This means that the controller will automatically 73 * send responses for us, which is fine since we don't have any 74 * important information to put in the response anyway. 75 */ 76#define INET_FIFO 0xfffe00000000LL 77 78#define FWIPDEBUG if (fwipdebug) if_printf 79#define TX_MAX_QUEUE (FWMAXQUEUE - 1) 80 81/* network interface */ 82static void fwip_start (struct ifnet *); 83static int fwip_ioctl (struct ifnet *, u_long, caddr_t); 84static void fwip_init (void *); 85 86static void fwip_post_busreset (void *); 87static void fwip_output_callback (struct fw_xfer *); 88static void fwip_async_output (struct fwip_softc *, struct ifnet *); 89static void fwip_start_send (void *, int); 90static void fwip_stream_input (struct fw_xferq *); 91static void fwip_unicast_input(struct fw_xfer *); 92 93static int fwipdebug = 0; 94static int broadcast_channel = 31; /* XXX */ 95static int tx_speed = 2; 96static int rx_queue_len = FWMAXQUEUE; 97 98MALLOC_DEFINE(M_FWIP, "if_fwip", "IP over FireWire interface"); 99SYSCTL_INT(_debug, OID_AUTO, if_fwip_debug, CTLFLAG_RW, &fwipdebug, 0, ""); 100SYSCTL_DECL(_hw_firewire); 101SYSCTL_NODE(_hw_firewire, OID_AUTO, fwip, CTLFLAG_RD, 0, 102 "Firewire ip subsystem"); 103SYSCTL_INT(_hw_firewire_fwip, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len, 104 0, "Length of the receive queue"); 105 106TUNABLE_INT("hw.firewire.fwip.rx_queue_len", &rx_queue_len); 107 108#ifdef DEVICE_POLLING 109#define FWIP_POLL_REGISTER(func, fwip, ifp) \ 110 if (ether_poll_register(func, ifp)) { \ 111 struct firewire_comm *fc = (fwip)->fd.fc; \ 112 fc->set_intr(fc, 0); \ 113 } 114 115#define FWIP_POLL_DEREGISTER(fwip, ifp) \ 116 do { \ 117 struct firewire_comm *fc = (fwip)->fd.fc; \ 118 ether_poll_deregister(ifp); \ 119 fc->set_intr(fc, 1); \ 120 } while(0) \ 121 122static poll_handler_t fwip_poll; 123 124static void 125fwip_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 126{ 127 struct fwip_softc *fwip; 128 struct firewire_comm *fc; 129 130 fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 131 fc = fwip->fd.fc; 132 if (cmd == POLL_DEREGISTER) { 133 /* enable interrupts */ 134 fc->set_intr(fc, 1); 135 return; 136 } 137 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 138} 139#else 140#define FWIP_POLL_REGISTER(func, fwip, ifp) 141#define FWIP_POLL_DEREGISTER(fwip, ifp) 142#endif 143static void 144fwip_identify(driver_t *driver, device_t parent) 145{ 146 BUS_ADD_CHILD(parent, 0, "fwip", device_get_unit(parent)); 147} 148 149static int 150fwip_probe(device_t dev) 151{ 152 device_t pa; 153 154 pa = device_get_parent(dev); 155 if(device_get_unit(dev) != device_get_unit(pa)){ 156 return(ENXIO); 157 } 158 159 device_set_desc(dev, "IP over FireWire"); 160 return (0); 161} 162 163static int 164fwip_attach(device_t dev) 165{ 166 struct fwip_softc *fwip; 167 struct ifnet *ifp; 168 int unit, s; 169 struct fw_hwaddr *hwaddr; 170 171 fwip = ((struct fwip_softc *)device_get_softc(dev)); 172 unit = device_get_unit(dev); 173 174 bzero(fwip, sizeof(struct fwip_softc)); 175 /* XXX */ 176 fwip->dma_ch = -1; 177 178 fwip->fd.fc = device_get_ivars(dev); 179 if (tx_speed < 0) 180 tx_speed = fwip->fd.fc->speed; 181 182 fwip->fd.dev = dev; 183 fwip->fd.post_explore = NULL; 184 fwip->fd.post_busreset = fwip_post_busreset; 185 fwip->fw_softc.fwip = fwip; 186 TASK_INIT(&fwip->start_send, 0, fwip_start_send, fwip); 187 188 /* 189 * Encode our hardware the way that arp likes it. 190 */ 191 hwaddr = &fwip->fw_softc.fwcom.fc_hwaddr; 192 hwaddr->sender_unique_ID_hi = htonl(fwip->fd.fc->eui.hi); 193 hwaddr->sender_unique_ID_lo = htonl(fwip->fd.fc->eui.lo); 194 hwaddr->sender_max_rec = fwip->fd.fc->maxrec; 195 hwaddr->sspd = fwip->fd.fc->speed; 196 hwaddr->sender_unicast_FIFO_hi = htons((uint16_t)(INET_FIFO >> 32)); 197 hwaddr->sender_unicast_FIFO_lo = htonl((uint32_t)INET_FIFO); 198 199 /* fill the rest and attach interface */ 200 ifp = &fwip->fwip_if; 201 ifp->if_softc = &fwip->fw_softc; 202 203#if __FreeBSD_version >= 501113 || defined(__DragonFly__) 204 if_initname(ifp, device_get_name(dev), unit); 205#else 206 ifp->if_unit = unit; 207 ifp->if_name = "fwip"; 208#endif 209 ifp->if_init = fwip_init; 210 ifp->if_start = fwip_start; 211 ifp->if_ioctl = fwip_ioctl; 212 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 213 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 214 215 s = splimp(); 216 firewire_ifattach(ifp, hwaddr); 217 splx(s); 218 219 FWIPDEBUG(ifp, "interface created\n"); 220 return 0; 221} 222 223static void 224fwip_stop(struct fwip_softc *fwip) 225{ 226 struct firewire_comm *fc; 227 struct fw_xferq *xferq; 228 struct ifnet *ifp = &fwip->fwip_if; 229 struct fw_xfer *xfer, *next; 230 int i; 231 232 fc = fwip->fd.fc; 233 234 FWIP_POLL_DEREGISTER(fwip, ifp); 235 236 if (fwip->dma_ch >= 0) { 237 xferq = fc->ir[fwip->dma_ch]; 238 239 if (xferq->flag & FWXFERQ_RUNNING) 240 fc->irx_disable(fc, fwip->dma_ch); 241 xferq->flag &= 242 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 243 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 244 xferq->hand = NULL; 245 246 for (i = 0; i < xferq->bnchunk; i ++) 247 m_freem(xferq->bulkxfer[i].mbuf); 248 free(xferq->bulkxfer, M_FWIP); 249 250 fw_bindremove(fc, &fwip->fwb); 251 for (xfer = STAILQ_FIRST(&fwip->fwb.xferlist); xfer != NULL; 252 xfer = next) { 253 next = STAILQ_NEXT(xfer, link); 254 fw_xfer_free(xfer); 255 } 256 257 for (xfer = STAILQ_FIRST(&fwip->xferlist); xfer != NULL; 258 xfer = next) { 259 next = STAILQ_NEXT(xfer, link); 260 fw_xfer_free(xfer); 261 } 262 STAILQ_INIT(&fwip->xferlist); 263 264 xferq->bulkxfer = NULL; 265 fwip->dma_ch = -1; 266 } 267 268 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 269} 270 271static int 272fwip_detach(device_t dev) 273{ 274 struct fwip_softc *fwip; 275 int s; 276 277 fwip = (struct fwip_softc *)device_get_softc(dev); 278 s = splimp(); 279 280 fwip_stop(fwip); 281 firewire_ifdetach(&fwip->fwip_if); 282 283 splx(s); 284 return 0; 285} 286 287static void 288fwip_init(void *arg) 289{ 290 struct fwip_softc *fwip = ((struct fwip_eth_softc *)arg)->fwip; 291 struct firewire_comm *fc; 292 struct ifnet *ifp = &fwip->fwip_if; 293 struct fw_xferq *xferq; 294 struct fw_xfer *xfer; 295 struct mbuf *m; 296 int i; 297 298 FWIPDEBUG(ifp, "initializing\n"); 299 300 fc = fwip->fd.fc; 301#define START 0 302 if (fwip->dma_ch < 0) { 303 for (i = START; i < fc->nisodma; i ++) { 304 xferq = fc->ir[i]; 305 if ((xferq->flag & FWXFERQ_OPEN) == 0) 306 goto found; 307 } 308 printf("no free dma channel\n"); 309 return; 310found: 311 fwip->dma_ch = i; 312 /* allocate DMA channel and init packet mode */ 313 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF | 314 FWXFERQ_HANDLER | FWXFERQ_STREAM; 315 xferq->flag &= ~0xff; 316 xferq->flag |= broadcast_channel & 0xff; 317 /* register fwip_input handler */ 318 xferq->sc = (caddr_t) fwip; 319 xferq->hand = fwip_stream_input; 320 xferq->bnchunk = rx_queue_len; 321 xferq->bnpacket = 1; 322 xferq->psize = MCLBYTES; 323 xferq->queued = 0; 324 xferq->buf = NULL; 325 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 326 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 327 M_FWIP, M_WAITOK); 328 if (xferq->bulkxfer == NULL) { 329 printf("if_fwip: malloc failed\n"); 330 return; 331 } 332 STAILQ_INIT(&xferq->stvalid); 333 STAILQ_INIT(&xferq->stfree); 334 STAILQ_INIT(&xferq->stdma); 335 xferq->stproc = NULL; 336 for (i = 0; i < xferq->bnchunk; i ++) { 337 m = 338#if defined(__DragonFly__) || __FreeBSD_version < 500000 339 m_getcl(M_WAIT, MT_DATA, M_PKTHDR); 340#else 341 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 342#endif 343 xferq->bulkxfer[i].mbuf = m; 344 if (m != NULL) { 345 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 346 STAILQ_INSERT_TAIL(&xferq->stfree, 347 &xferq->bulkxfer[i], link); 348 } else 349 printf("fwip_as_input: m_getcl failed\n"); 350 } 351 352 fwip->fwb.start = INET_FIFO; 353 fwip->fwb.end = INET_FIFO + 16384; /* S3200 packet size */ 354 fwip->fwb.act_type = FWACT_XFER; 355 356 /* pre-allocate xfer */ 357 STAILQ_INIT(&fwip->fwb.xferlist); 358 for (i = 0; i < rx_queue_len; i ++) { 359 xfer = fw_xfer_alloc(M_FWIP); 360 if (xfer == NULL) 361 break; 362 m = m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 363 xfer->recv.payload = mtod(m, uint32_t *); 364 xfer->recv.pay_len = MCLBYTES; 365 xfer->act.hand = fwip_unicast_input; 366 xfer->fc = fc; 367 xfer->sc = (caddr_t)fwip; 368 xfer->mbuf = m; 369 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 370 } 371 fw_bindadd(fc, &fwip->fwb); 372 373 STAILQ_INIT(&fwip->xferlist); 374 for (i = 0; i < TX_MAX_QUEUE; i++) { 375 xfer = fw_xfer_alloc(M_FWIP); 376 if (xfer == NULL) 377 break; 378 xfer->send.spd = tx_speed; 379 xfer->fc = fwip->fd.fc; 380 xfer->retry_req = fw_asybusy; 381 xfer->sc = (caddr_t)fwip; 382 xfer->act.hand = fwip_output_callback; 383 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 384 } 385 } else 386 xferq = fc->ir[fwip->dma_ch]; 387 388 fwip->last_dest.hi = 0; 389 fwip->last_dest.lo = 0; 390 391 /* start dma */ 392 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 393 fc->irx_enable(fc, fwip->dma_ch); 394 395 ifp->if_flags |= IFF_RUNNING; 396 ifp->if_flags &= ~IFF_OACTIVE; 397 398 FWIP_POLL_REGISTER(fwip_poll, fwip, ifp); 399#if 0 400 /* attempt to start output */ 401 fwip_start(ifp); 402#endif 403} 404 405static int 406fwip_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 407{ 408 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 409 int s, error; 410 411 switch (cmd) { 412 case SIOCSIFFLAGS: 413 s = splimp(); 414 if (ifp->if_flags & IFF_UP) { 415 if (!(ifp->if_flags & IFF_RUNNING)) 416 fwip_init(&fwip->fw_softc); 417 } else { 418 if (ifp->if_flags & IFF_RUNNING) 419 fwip_stop(fwip); 420 } 421 splx(s); 422 break; 423 case SIOCADDMULTI: 424 case SIOCDELMULTI: 425 break; 426 427#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 428 default: 429#else 430 case SIOCSIFADDR: 431 case SIOCGIFADDR: 432 case SIOCSIFMTU: 433#endif 434 s = splimp(); 435 error = firewire_ioctl(ifp, cmd, data); 436 splx(s); 437 return (error); 438#if defined(__DragonFly__) || __FreeBSD_version < 500000 439 default: 440 return (EINVAL); 441#endif 442 } 443 444 return (0); 445} 446 447static void 448fwip_post_busreset(void *arg) 449{ 450 struct fwip_softc *fwip = arg; 451 struct crom_src *src; 452 struct crom_chunk *root; 453 454 src = fwip->fd.fc->crom_src; 455 root = fwip->fd.fc->crom_root; 456 457 /* RFC2734 IPv4 over IEEE1394 */ 458 bzero(&fwip->unit4, sizeof(struct crom_chunk)); 459 crom_add_chunk(src, root, &fwip->unit4, CROM_UDIR); 460 crom_add_entry(&fwip->unit4, CSRKEY_SPEC, CSRVAL_IETF); 461 crom_add_simple_text(src, &fwip->unit4, &fwip->spec4, "IANA"); 462 crom_add_entry(&fwip->unit4, CSRKEY_VER, 1); 463 crom_add_simple_text(src, &fwip->unit4, &fwip->ver4, "IPv4"); 464 465 /* RFC3146 IPv6 over IEEE1394 */ 466 bzero(&fwip->unit6, sizeof(struct crom_chunk)); 467 crom_add_chunk(src, root, &fwip->unit6, CROM_UDIR); 468 crom_add_entry(&fwip->unit6, CSRKEY_SPEC, CSRVAL_IETF); 469 crom_add_simple_text(src, &fwip->unit6, &fwip->spec6, "IANA"); 470 crom_add_entry(&fwip->unit6, CSRKEY_VER, 2); 471 crom_add_simple_text(src, &fwip->unit6, &fwip->ver6, "IPv6"); 472 473 fwip->last_dest.hi = 0; 474 fwip->last_dest.lo = 0; 475 firewire_busreset(&fwip->fwip_if); 476} 477 478static void 479fwip_output_callback(struct fw_xfer *xfer) 480{ 481 struct fwip_softc *fwip; 482 struct ifnet *ifp; 483 int s; 484 485 GIANT_REQUIRED; 486 487 fwip = (struct fwip_softc *)xfer->sc; 488 ifp = &fwip->fwip_if; 489 /* XXX error check */ 490 FWIPDEBUG(ifp, "resp = %d\n", xfer->resp); 491 if (xfer->resp != 0) 492 ifp->if_oerrors ++; 493 494 m_freem(xfer->mbuf); 495 fw_xfer_unload(xfer); 496 497 s = splimp(); 498 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 499 splx(s); 500 501 /* for queue full */ 502 if (ifp->if_snd.ifq_head != NULL) 503 fwip_start(ifp); 504} 505 506static void 507fwip_start(struct ifnet *ifp) 508{ 509 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 510 int s; 511 512 GIANT_REQUIRED; 513 514 FWIPDEBUG(ifp, "starting\n"); 515 516 if (fwip->dma_ch < 0) { 517 struct mbuf *m = NULL; 518 519 FWIPDEBUG(ifp, "not ready\n"); 520 521 s = splimp(); 522 do { 523 IF_DEQUEUE(&ifp->if_snd, m); 524 if (m != NULL) 525 m_freem(m); 526 ifp->if_oerrors ++; 527 } while (m != NULL); 528 splx(s); 529 530 return; 531 } 532 533 s = splimp(); 534 ifp->if_flags |= IFF_OACTIVE; 535 536 if (ifp->if_snd.ifq_len != 0) 537 fwip_async_output(fwip, ifp); 538 539 ifp->if_flags &= ~IFF_OACTIVE; 540 splx(s); 541} 542 543/* Async. stream output */ 544static void 545fwip_async_output(struct fwip_softc *fwip, struct ifnet *ifp) 546{ 547 struct firewire_comm *fc = fwip->fd.fc; 548 struct mbuf *m; 549 struct m_tag *mtag; 550 struct fw_hwaddr *destfw; 551 struct fw_xfer *xfer; 552 struct fw_xferq *xferq; 553 struct fw_pkt *fp; 554 uint16_t nodeid; 555 int i = 0; 556 557 GIANT_REQUIRED; 558 559 xfer = NULL; 560 xferq = fwip->fd.fc->atq; 561 while (xferq->queued < xferq->maxq - 1) { 562 xfer = STAILQ_FIRST(&fwip->xferlist); 563 if (xfer == NULL) { 564 printf("if_fwip: lack of xfer\n"); 565 return; 566 } 567 IF_DEQUEUE(&ifp->if_snd, m); 568 if (m == NULL) 569 break; 570 571 /* 572 * Dig out the link-level address which 573 * firewire_output got via arp or neighbour 574 * discovery. If we don't have a link-level address, 575 * just stick the thing on the broadcast channel. 576 */ 577 mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, 0); 578 if (mtag == NULL) 579 destfw = 0; 580 else 581 destfw = (struct fw_hwaddr *) (mtag + 1); 582 583 STAILQ_REMOVE_HEAD(&fwip->xferlist, link); 584 585 /* 586 * We don't do any bpf stuff here - the generic code 587 * in firewire_output gives the packet to bpf before 588 * it adds the link-level encapsulation. 589 */ 590 591 /* 592 * Put the mbuf in the xfer early in case we hit an 593 * error case below - fwip_output_callback will free 594 * the mbuf. 595 */ 596 xfer->mbuf = m; 597 598 /* 599 * We use the arp result (if any) to add a suitable firewire 600 * packet header before handing off to the bus. 601 */ 602 fp = &xfer->send.hdr; 603 nodeid = FWLOCALBUS | fc->nodeid; 604 if ((m->m_flags & M_BCAST) || !destfw) { 605 /* 606 * Broadcast packets are sent as GASP packets with 607 * specifier ID 0x00005e, version 1 on the broadcast 608 * channel. To be conservative, we send at the 609 * slowest possible speed. 610 */ 611 uint32_t *p; 612 613 M_PREPEND(m, 2*sizeof(uint32_t), M_DONTWAIT); 614 p = mtod(m, uint32_t *); 615 fp->mode.stream.len = m->m_pkthdr.len; 616 fp->mode.stream.chtag = broadcast_channel; 617 fp->mode.stream.tcode = FWTCODE_STREAM; 618 fp->mode.stream.sy = 0; 619 xfer->send.spd = 0; 620 p[0] = htonl(nodeid << 16); 621 p[1] = htonl((0x5e << 24) | 1); 622 } else { 623 /* 624 * Unicast packets are sent as block writes to the 625 * target's unicast fifo address. If we can't 626 * find the node address, we just give up. We 627 * could broadcast it but that might overflow 628 * the packet size limitations due to the 629 * extra GASP header. Note: the hardware 630 * address is stored in network byte order to 631 * make life easier for ARP. 632 */ 633 struct fw_device *fd; 634 struct fw_eui64 eui; 635 636 eui.hi = ntohl(destfw->sender_unique_ID_hi); 637 eui.lo = ntohl(destfw->sender_unique_ID_lo); 638 if (fwip->last_dest.hi != eui.hi || 639 fwip->last_dest.lo != eui.lo) { 640 fd = fw_noderesolve_eui64(fc, &eui); 641 if (!fd) { 642 /* error */ 643 ifp->if_oerrors ++; 644 /* XXX set error code */ 645 fwip_output_callback(xfer); 646 continue; 647 648 } 649 fwip->last_hdr.mode.wreqb.dst = FWLOCALBUS | fd->dst; 650 fwip->last_hdr.mode.wreqb.tlrt = 0; 651 fwip->last_hdr.mode.wreqb.tcode = FWTCODE_WREQB; 652 fwip->last_hdr.mode.wreqb.pri = 0; 653 fwip->last_hdr.mode.wreqb.src = nodeid; 654 fwip->last_hdr.mode.wreqb.dest_hi = 655 ntohs(destfw->sender_unicast_FIFO_hi); 656 fwip->last_hdr.mode.wreqb.dest_lo = 657 ntohl(destfw->sender_unicast_FIFO_lo); 658 fwip->last_hdr.mode.wreqb.extcode = 0; 659 fwip->last_dest = eui; 660 } 661 662 fp->mode.wreqb = fwip->last_hdr.mode.wreqb; 663 fp->mode.wreqb.len = m->m_pkthdr.len; 664 xfer->send.spd = min(destfw->sspd, fc->speed); 665 } 666 667 xfer->send.pay_len = m->m_pkthdr.len; 668 669 if (fw_asyreq(fc, -1, xfer) != 0) { 670 /* error */ 671 ifp->if_oerrors ++; 672 /* XXX set error code */ 673 fwip_output_callback(xfer); 674 continue; 675 } else { 676 ifp->if_opackets ++; 677 i++; 678 } 679 } 680#if 0 681 if (i > 1) 682 printf("%d queued\n", i); 683#endif 684 if (i > 0) { 685#if 1 686 xferq->start(fc); 687#else 688 taskqueue_enqueue(taskqueue_swi_giant, &fwip->start_send); 689#endif 690 } 691} 692 693static void 694fwip_start_send (void *arg, int count) 695{ 696 struct fwip_softc *fwip = arg; 697 698 GIANT_REQUIRED; 699 fwip->fd.fc->atq->start(fwip->fd.fc); 700} 701 702/* Async. stream output */ 703static void 704fwip_stream_input(struct fw_xferq *xferq) 705{ 706 struct mbuf *m, *m0; 707 struct m_tag *mtag; 708 struct ifnet *ifp; 709 struct fwip_softc *fwip; 710 struct fw_bulkxfer *sxfer; 711 struct fw_pkt *fp; 712 uint16_t src; 713 uint32_t *p; 714 715 GIANT_REQUIRED; 716 717 fwip = (struct fwip_softc *)xferq->sc; 718 ifp = &fwip->fwip_if; 719#if 0 720 FWIP_POLL_REGISTER(fwip_poll, fwip, ifp); 721#endif 722 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 723 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 724 fp = mtod(sxfer->mbuf, struct fw_pkt *); 725 if (fwip->fd.fc->irx_post != NULL) 726 fwip->fd.fc->irx_post(fwip->fd.fc, fp->mode.ld); 727 m = sxfer->mbuf; 728 729 /* insert new rbuf */ 730 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 731 if (m0 != NULL) { 732 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 733 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 734 } else 735 printf("fwip_as_input: m_getcl failed\n"); 736 737 /* 738 * We must have a GASP header - leave the 739 * encapsulation sanity checks to the generic 740 * code. Remeber that we also have the firewire async 741 * stream header even though that isn't accounted for 742 * in mode.stream.len. 743 */ 744 if (sxfer->resp != 0 || fp->mode.stream.len < 745 2*sizeof(uint32_t)) { 746 m_freem(m); 747 ifp->if_ierrors ++; 748 continue; 749 } 750 m->m_len = m->m_pkthdr.len = fp->mode.stream.len 751 + sizeof(fp->mode.stream); 752 753 /* 754 * If we received the packet on the broadcast channel, 755 * mark it as broadcast, otherwise we assume it must 756 * be multicast. 757 */ 758 if (fp->mode.stream.chtag == broadcast_channel) 759 m->m_flags |= M_BCAST; 760 else 761 m->m_flags |= M_MCAST; 762 763 /* 764 * Make sure we recognise the GASP specifier and 765 * version. 766 */ 767 p = mtod(m, uint32_t *); 768 if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 0x00005e 769 || (ntohl(p[2]) & 0xffffff) != 1) { 770 FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n", 771 ntohl(p[1]), ntohl(p[2])); 772 m_freem(m); 773 ifp->if_ierrors ++; 774 continue; 775 } 776 777 /* 778 * Record the sender ID for possible BPF usage. 779 */ 780 src = ntohl(p[1]) >> 16; 781 if (ifp->if_bpf) { 782 mtag = m_tag_alloc(MTAG_FIREWIRE, 783 MTAG_FIREWIRE_SENDER_EUID, 784 2*sizeof(uint32_t), M_NOWAIT); 785 if (mtag) { 786 /* bpf wants it in network byte order */ 787 struct fw_device *fd; 788 uint32_t *p = (uint32_t *) (mtag + 1); 789 fd = fw_noderesolve_nodeid(fwip->fd.fc, 790 src & 0x3f); 791 if (fd) { 792 p[0] = htonl(fd->eui.hi); 793 p[1] = htonl(fd->eui.lo); 794 } else { 795 p[0] = 0; 796 p[1] = 0; 797 } 798 m_tag_prepend(m, mtag); 799 } 800 } 801 802 /* 803 * Trim off the GASP header 804 */ 805 m_adj(m, 3*sizeof(uint32_t)); 806 m->m_pkthdr.rcvif = ifp; 807 firewire_input(ifp, m, src); 808 ifp->if_ipackets ++; 809 } 810 if (STAILQ_FIRST(&xferq->stfree) != NULL) 811 fwip->fd.fc->irx_enable(fwip->fd.fc, fwip->dma_ch); 812} 813 814static __inline void 815fwip_unicast_input_recycle(struct fwip_softc *fwip, struct fw_xfer *xfer) 816{ 817 struct mbuf *m; 818 819 GIANT_REQUIRED; 820 821 /* 822 * We have finished with a unicast xfer. Allocate a new 823 * cluster and stick it on the back of the input queue. 824 */ 825 m = m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 826 xfer->mbuf = m; 827 xfer->recv.payload = mtod(m, uint32_t *); 828 xfer->recv.pay_len = MCLBYTES; 829 xfer->mbuf = m; 830 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 831} 832 833static void 834fwip_unicast_input(struct fw_xfer *xfer) 835{ 836 uint64_t address; 837 struct mbuf *m; 838 struct m_tag *mtag; 839 struct ifnet *ifp; 840 struct fwip_softc *fwip; 841 struct fw_pkt *fp; 842 //struct fw_pkt *sfp; 843 int rtcode; 844 845 GIANT_REQUIRED; 846 847 fwip = (struct fwip_softc *)xfer->sc; 848 ifp = &fwip->fwip_if; 849 m = xfer->mbuf; 850 xfer->mbuf = 0; 851 fp = &xfer->recv.hdr; 852 853 /* 854 * Check the fifo address - we only accept addresses of 855 * exactly INET_FIFO. 856 */ 857 address = ((uint64_t)fp->mode.wreqb.dest_hi << 32) 858 | fp->mode.wreqb.dest_lo; 859 if (fp->mode.wreqb.tcode != FWTCODE_WREQB) { 860 rtcode = FWRCODE_ER_TYPE; 861 } else if (address != INET_FIFO) { 862 rtcode = FWRCODE_ER_ADDR; 863 } else { 864 rtcode = FWRCODE_COMPLETE; 865 } 866 867 /* 868 * Pick up a new mbuf and stick it on the back of the receive 869 * queue. 870 */ 871 fwip_unicast_input_recycle(fwip, xfer); 872 873 /* 874 * If we've already rejected the packet, give up now. 875 */ 876 if (rtcode != FWRCODE_COMPLETE) { 877 m_freem(m); 878 ifp->if_ierrors ++; 879 return; 880 } 881 882 if (ifp->if_bpf) { 883 /* 884 * Record the sender ID for possible BPF usage. 885 */ 886 mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_SENDER_EUID, 887 2*sizeof(uint32_t), M_NOWAIT); 888 if (mtag) { 889 /* bpf wants it in network byte order */ 890 struct fw_device *fd; 891 uint32_t *p = (uint32_t *) (mtag + 1); 892 fd = fw_noderesolve_nodeid(fwip->fd.fc, 893 fp->mode.wreqb.src & 0x3f); 894 if (fd) { 895 p[0] = htonl(fd->eui.hi); 896 p[1] = htonl(fd->eui.lo); 897 } else { 898 p[0] = 0; 899 p[1] = 0; 900 } 901 m_tag_prepend(m, mtag); 902 } 903 } 904 905 /* 906 * Hand off to the generic encapsulation code. We don't use 907 * ifp->if_input so that we can pass the source nodeid as an 908 * argument to facilitate link-level fragment reassembly. 909 */ 910 m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len; 911 m->m_pkthdr.rcvif = ifp; 912 firewire_input(ifp, m, fp->mode.wreqb.src); 913 ifp->if_ipackets ++; 914} 915 916static devclass_t fwip_devclass; 917 918static device_method_t fwip_methods[] = { 919 /* device interface */ 920 DEVMETHOD(device_identify, fwip_identify), 921 DEVMETHOD(device_probe, fwip_probe), 922 DEVMETHOD(device_attach, fwip_attach), 923 DEVMETHOD(device_detach, fwip_detach), 924 { 0, 0 } 925}; 926 927static driver_t fwip_driver = { 928 "fwip", 929 fwip_methods, 930 sizeof(struct fwip_softc), 931}; 932 933 934#ifdef __DragonFly__ 935DECLARE_DUMMY_MODULE(fwip); 936#endif 937DRIVER_MODULE(fwip, firewire, fwip_driver, fwip_devclass, 0, 0); 938MODULE_VERSION(fwip, 1); 939MODULE_DEPEND(fwip, firewire, 1, 1, 1); 940