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 * $FreeBSD$ 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 #include <net/if_types.h> 59 #ifdef __DragonFly__ 60 #include <bus/firewire/firewire.h> 61 #include <bus/firewire/firewirereg.h> 62 #include "if_fwipvar.h" 63 #else 64 #include <dev/firewire/firewire.h> 65 #include <dev/firewire/firewirereg.h> 66 #include <dev/firewire/iec13213.h> 67 #include <dev/firewire/if_fwipvar.h> 68 #endif 69 70 /* 71 * We really need a mechanism for allocating regions in the FIFO 72 * address space. We pick a address in the OHCI controller's 'middle' 73 * address space. This means that the controller will automatically 74 * send responses for us, which is fine since we don't have any 75 * important information to put in the response anyway. 76 */ 77 #define INET_FIFO 0xfffe00000000LL 78 79 #define FWIPDEBUG if (fwipdebug) if_printf 80 #define TX_MAX_QUEUE (FWMAXQUEUE - 1) 81 82 /* network interface */ 83 static void fwip_start (struct ifnet *); 84 static int fwip_ioctl (struct ifnet *, u_long, caddr_t); 85 static void fwip_init (void *); 86 87 static void fwip_post_busreset (void *); 88 static void fwip_output_callback (struct fw_xfer *); 89 static void fwip_async_output (struct fwip_softc *, struct ifnet *); 90 static void fwip_start_send (void *, int); 91 static void fwip_stream_input (struct fw_xferq *); 92 static void fwip_unicast_input(struct fw_xfer *); 93 94 static int fwipdebug = 0; 95 static int broadcast_channel = 0xc0 | 0x1f; /* tag | channel(XXX) */ 96 static int tx_speed = 2; 97 static int rx_queue_len = FWMAXQUEUE; 98 99 MALLOC_DEFINE(M_FWIP, "if_fwip", "IP over FireWire interface"); 100 SYSCTL_INT(_debug, OID_AUTO, if_fwip_debug, CTLFLAG_RW, &fwipdebug, 0, ""); 101 SYSCTL_DECL(_hw_firewire); 102 SYSCTL_NODE(_hw_firewire, OID_AUTO, fwip, CTLFLAG_RD, 0, 103 "Firewire ip subsystem"); 104 SYSCTL_INT(_hw_firewire_fwip, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len, 105 0, "Length of the receive queue"); 106 107 TUNABLE_INT("hw.firewire.fwip.rx_queue_len", &rx_queue_len); 108 109 #ifdef DEVICE_POLLING 110 #define FWIP_POLL_REGISTER(func, fwip, ifp) \ 111 if (ether_poll_register(func, ifp)) { \ 112 struct firewire_comm *fc = (fwip)->fd.fc; \ 113 fc->set_intr(fc, 0); \ 114 } 115 116 #define FWIP_POLL_DEREGISTER(fwip, ifp) \ 117 do { \ 118 struct firewire_comm *fc = (fwip)->fd.fc; \ 119 ether_poll_deregister(ifp); \ 120 fc->set_intr(fc, 1); \ 121 } while(0) \ 122 123 static poll_handler_t fwip_poll; 124 125 static void 126 fwip_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 127 { 128 struct fwip_softc *fwip; 129 struct firewire_comm *fc; 130 131 fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 132 fc = fwip->fd.fc; 133 if (cmd == POLL_DEREGISTER) { 134 /* enable interrupts */ 135 fc->set_intr(fc, 1); 136 return; 137 } 138 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 139 } 140 #else 141 #define FWIP_POLL_REGISTER(func, fwip, ifp) 142 #define FWIP_POLL_DEREGISTER(fwip, ifp) 143 #endif 144 static void 145 fwip_identify(driver_t *driver, device_t parent) 146 { 147 BUS_ADD_CHILD(parent, 0, "fwip", device_get_unit(parent)); 148 } 149 150 static int 151 fwip_probe(device_t dev) 152 { 153 device_t pa; 154 155 pa = device_get_parent(dev); 156 if(device_get_unit(dev) != device_get_unit(pa)){ 157 return(ENXIO); 158 } 159 160 device_set_desc(dev, "IP over FireWire"); 161 return (0); 162 } 163 164 static int 165 fwip_attach(device_t dev) 166 { 167 struct fwip_softc *fwip; 168 struct ifnet *ifp; 169 int unit, s; 170 struct fw_hwaddr *hwaddr; 171 172 fwip = ((struct fwip_softc *)device_get_softc(dev)); 173 unit = device_get_unit(dev); 174 ifp = fwip->fw_softc.fwip_ifp = if_alloc(IFT_IEEE1394); 175 if (ifp == NULL) 176 return (ENOSPC); 177 178 bzero(fwip, sizeof(struct fwip_softc)); 179 /* XXX */ 180 fwip->dma_ch = -1; 181 182 fwip->fd.fc = device_get_ivars(dev); 183 if (tx_speed < 0) 184 tx_speed = fwip->fd.fc->speed; 185 186 fwip->fd.dev = dev; 187 fwip->fd.post_explore = NULL; 188 fwip->fd.post_busreset = fwip_post_busreset; 189 fwip->fw_softc.fwip = fwip; 190 TASK_INIT(&fwip->start_send, 0, fwip_start_send, fwip); 191 192 /* 193 * Encode our hardware the way that arp likes it. 194 */ 195 hwaddr = &IFP2FWC(fwip->fw_softc.fwip_ifp)->fc_hwaddr; 196 hwaddr->sender_unique_ID_hi = htonl(fwip->fd.fc->eui.hi); 197 hwaddr->sender_unique_ID_lo = htonl(fwip->fd.fc->eui.lo); 198 hwaddr->sender_max_rec = fwip->fd.fc->maxrec; 199 hwaddr->sspd = fwip->fd.fc->speed; 200 hwaddr->sender_unicast_FIFO_hi = htons((uint16_t)(INET_FIFO >> 32)); 201 hwaddr->sender_unicast_FIFO_lo = htonl((uint32_t)INET_FIFO); 202 203 /* fill the rest and attach interface */ 204 ifp->if_softc = &fwip->fw_softc; 205 206 #if __FreeBSD_version >= 501113 || defined(__DragonFly__) 207 if_initname(ifp, device_get_name(dev), unit); 208 #else 209 ifp->if_unit = unit; 210 ifp->if_name = "fwip"; 211 #endif 212 ifp->if_init = fwip_init; 213 ifp->if_start = fwip_start; 214 ifp->if_ioctl = fwip_ioctl; 215 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST| 216 IFF_NEEDSGIANT); 217 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 218 219 s = splimp(); 220 firewire_ifattach(ifp, hwaddr); 221 splx(s); 222 223 FWIPDEBUG(ifp, "interface created\n"); 224 return 0; 225 } 226 227 static void 228 fwip_stop(struct fwip_softc *fwip) 229 { 230 struct firewire_comm *fc; 231 struct fw_xferq *xferq; 232 struct ifnet *ifp = fwip->fw_softc.fwip_ifp; 233 struct fw_xfer *xfer, *next; 234 int i; 235 236 fc = fwip->fd.fc; 237 238 FWIP_POLL_DEREGISTER(fwip, ifp); 239 240 if (fwip->dma_ch >= 0) { 241 xferq = fc->ir[fwip->dma_ch]; 242 243 if (xferq->flag & FWXFERQ_RUNNING) 244 fc->irx_disable(fc, fwip->dma_ch); 245 xferq->flag &= 246 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 247 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 248 xferq->hand = NULL; 249 250 for (i = 0; i < xferq->bnchunk; i ++) 251 m_freem(xferq->bulkxfer[i].mbuf); 252 free(xferq->bulkxfer, M_FWIP); 253 254 fw_bindremove(fc, &fwip->fwb); 255 for (xfer = STAILQ_FIRST(&fwip->fwb.xferlist); xfer != NULL; 256 xfer = next) { 257 next = STAILQ_NEXT(xfer, link); 258 fw_xfer_free(xfer); 259 } 260 261 for (xfer = STAILQ_FIRST(&fwip->xferlist); xfer != NULL; 262 xfer = next) { 263 next = STAILQ_NEXT(xfer, link); 264 fw_xfer_free(xfer); 265 } 266 STAILQ_INIT(&fwip->xferlist); 267 268 xferq->bulkxfer = NULL; 269 fwip->dma_ch = -1; 270 } 271 272 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 273 } 274 275 static int 276 fwip_detach(device_t dev) 277 { 278 struct fwip_softc *fwip; 279 int s; 280 281 fwip = (struct fwip_softc *)device_get_softc(dev); 282 s = splimp(); 283 284 fwip_stop(fwip); 285 firewire_ifdetach(fwip->fw_softc.fwip_ifp); 286 if_free(fwip->fw_softc.fwip_ifp); 287 288 splx(s); 289 return 0; 290 } 291 292 static void 293 fwip_init(void *arg) 294 { 295 struct fwip_softc *fwip = ((struct fwip_eth_softc *)arg)->fwip; 296 struct firewire_comm *fc; 297 struct ifnet *ifp = fwip->fw_softc.fwip_ifp; 298 struct fw_xferq *xferq; 299 struct fw_xfer *xfer; 300 struct mbuf *m; 301 int i; 302 303 FWIPDEBUG(ifp, "initializing\n"); 304 305 fc = fwip->fd.fc; 306 #define START 0 307 if (fwip->dma_ch < 0) { 308 for (i = START; i < fc->nisodma; i ++) { 309 xferq = fc->ir[i]; 310 if ((xferq->flag & FWXFERQ_OPEN) == 0) 311 goto found; 312 } 313 printf("no free dma channel\n"); 314 return; 315 found: 316 fwip->dma_ch = i; 317 /* allocate DMA channel and init packet mode */ 318 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF | 319 FWXFERQ_HANDLER | FWXFERQ_STREAM; 320 xferq->flag &= ~0xff; 321 xferq->flag |= broadcast_channel & 0xff; 322 /* register fwip_input handler */ 323 xferq->sc = (caddr_t) fwip; 324 xferq->hand = fwip_stream_input; 325 xferq->bnchunk = rx_queue_len; 326 xferq->bnpacket = 1; 327 xferq->psize = MCLBYTES; 328 xferq->queued = 0; 329 xferq->buf = NULL; 330 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 331 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 332 M_FWIP, M_WAITOK); 333 if (xferq->bulkxfer == NULL) { 334 printf("if_fwip: malloc failed\n"); 335 return; 336 } 337 STAILQ_INIT(&xferq->stvalid); 338 STAILQ_INIT(&xferq->stfree); 339 STAILQ_INIT(&xferq->stdma); 340 xferq->stproc = NULL; 341 for (i = 0; i < xferq->bnchunk; i ++) { 342 m = 343 #if defined(__DragonFly__) || __FreeBSD_version < 500000 344 m_getcl(M_WAIT, MT_DATA, M_PKTHDR); 345 #else 346 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 347 #endif 348 xferq->bulkxfer[i].mbuf = m; 349 if (m != NULL) { 350 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 351 STAILQ_INSERT_TAIL(&xferq->stfree, 352 &xferq->bulkxfer[i], link); 353 } else 354 printf("fwip_as_input: m_getcl failed\n"); 355 } 356 357 fwip->fwb.start = INET_FIFO; 358 fwip->fwb.end = INET_FIFO + 16384; /* S3200 packet size */ 359 fwip->fwb.act_type = FWACT_XFER; 360 361 /* pre-allocate xfer */ 362 STAILQ_INIT(&fwip->fwb.xferlist); 363 for (i = 0; i < rx_queue_len; i ++) { 364 xfer = fw_xfer_alloc(M_FWIP); 365 if (xfer == NULL) 366 break; 367 m = m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 368 xfer->recv.payload = mtod(m, uint32_t *); 369 xfer->recv.pay_len = MCLBYTES; 370 xfer->act.hand = fwip_unicast_input; 371 xfer->fc = fc; 372 xfer->sc = (caddr_t)fwip; 373 xfer->mbuf = m; 374 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 375 } 376 fw_bindadd(fc, &fwip->fwb); 377 378 STAILQ_INIT(&fwip->xferlist); 379 for (i = 0; i < TX_MAX_QUEUE; i++) { 380 xfer = fw_xfer_alloc(M_FWIP); 381 if (xfer == NULL) 382 break; 383 xfer->send.spd = tx_speed; 384 xfer->fc = fwip->fd.fc; 385 xfer->retry_req = fw_asybusy; 386 xfer->sc = (caddr_t)fwip; 387 xfer->act.hand = fwip_output_callback; 388 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 389 } 390 } else 391 xferq = fc->ir[fwip->dma_ch]; 392 393 fwip->last_dest.hi = 0; 394 fwip->last_dest.lo = 0; 395 396 /* start dma */ 397 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 398 fc->irx_enable(fc, fwip->dma_ch); 399 400 ifp->if_flags |= IFF_RUNNING; 401 ifp->if_flags &= ~IFF_OACTIVE; 402 403 FWIP_POLL_REGISTER(fwip_poll, fwip, ifp); 404 #if 0 405 /* attempt to start output */ 406 fwip_start(ifp); 407 #endif 408 } 409 410 static int 411 fwip_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 412 { 413 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 414 int s, error; 415 416 switch (cmd) { 417 case SIOCSIFFLAGS: 418 s = splimp(); 419 if (ifp->if_flags & IFF_UP) { 420 if (!(ifp->if_flags & IFF_RUNNING)) 421 fwip_init(&fwip->fw_softc); 422 } else { 423 if (ifp->if_flags & IFF_RUNNING) 424 fwip_stop(fwip); 425 } 426 splx(s); 427 break; 428 case SIOCADDMULTI: 429 case SIOCDELMULTI: 430 break; 431 432 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 433 default: 434 #else 435 case SIOCSIFADDR: 436 case SIOCGIFADDR: 437 case SIOCSIFMTU: 438 #endif 439 s = splimp(); 440 error = firewire_ioctl(ifp, cmd, data); 441 splx(s); 442 return (error); 443 #if defined(__DragonFly__) || __FreeBSD_version < 500000 444 default: 445 return (EINVAL); 446 #endif 447 } 448 449 return (0); 450 } 451 452 static void 453 fwip_post_busreset(void *arg) 454 { 455 struct fwip_softc *fwip = arg; 456 struct crom_src *src; 457 struct crom_chunk *root; 458 459 src = fwip->fd.fc->crom_src; 460 root = fwip->fd.fc->crom_root; 461 462 /* RFC2734 IPv4 over IEEE1394 */ 463 bzero(&fwip->unit4, sizeof(struct crom_chunk)); 464 crom_add_chunk(src, root, &fwip->unit4, CROM_UDIR); 465 crom_add_entry(&fwip->unit4, CSRKEY_SPEC, CSRVAL_IETF); 466 crom_add_simple_text(src, &fwip->unit4, &fwip->spec4, "IANA"); 467 crom_add_entry(&fwip->unit4, CSRKEY_VER, 1); 468 crom_add_simple_text(src, &fwip->unit4, &fwip->ver4, "IPv4"); 469 470 /* RFC3146 IPv6 over IEEE1394 */ 471 bzero(&fwip->unit6, sizeof(struct crom_chunk)); 472 crom_add_chunk(src, root, &fwip->unit6, CROM_UDIR); 473 crom_add_entry(&fwip->unit6, CSRKEY_SPEC, CSRVAL_IETF); 474 crom_add_simple_text(src, &fwip->unit6, &fwip->spec6, "IANA"); 475 crom_add_entry(&fwip->unit6, CSRKEY_VER, 2); 476 crom_add_simple_text(src, &fwip->unit6, &fwip->ver6, "IPv6"); 477 478 fwip->last_dest.hi = 0; 479 fwip->last_dest.lo = 0; 480 firewire_busreset(fwip->fw_softc.fwip_ifp); 481 } 482 483 static void 484 fwip_output_callback(struct fw_xfer *xfer) 485 { 486 struct fwip_softc *fwip; 487 struct ifnet *ifp; 488 int s; 489 490 GIANT_REQUIRED; 491 492 fwip = (struct fwip_softc *)xfer->sc; 493 ifp = fwip->fw_softc.fwip_ifp; 494 /* XXX error check */ 495 FWIPDEBUG(ifp, "resp = %d\n", xfer->resp); 496 if (xfer->resp != 0) 497 ifp->if_oerrors ++; 498 499 m_freem(xfer->mbuf); 500 fw_xfer_unload(xfer); 501 502 s = splimp(); 503 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 504 splx(s); 505 506 /* for queue full */ 507 if (ifp->if_snd.ifq_head != NULL) 508 fwip_start(ifp); 509 } 510 511 static void 512 fwip_start(struct ifnet *ifp) 513 { 514 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 515 int s; 516 517 GIANT_REQUIRED; 518 519 FWIPDEBUG(ifp, "starting\n"); 520 521 if (fwip->dma_ch < 0) { 522 struct mbuf *m = NULL; 523 524 FWIPDEBUG(ifp, "not ready\n"); 525 526 s = splimp(); 527 do { 528 IF_DEQUEUE(&ifp->if_snd, m); 529 if (m != NULL) 530 m_freem(m); 531 ifp->if_oerrors ++; 532 } while (m != NULL); 533 splx(s); 534 535 return; 536 } 537 538 s = splimp(); 539 ifp->if_flags |= IFF_OACTIVE; 540 541 if (ifp->if_snd.ifq_len != 0) 542 fwip_async_output(fwip, ifp); 543 544 ifp->if_flags &= ~IFF_OACTIVE; 545 splx(s); 546 } 547 548 /* Async. stream output */ 549 static void 550 fwip_async_output(struct fwip_softc *fwip, struct ifnet *ifp) 551 { 552 struct firewire_comm *fc = fwip->fd.fc; 553 struct mbuf *m; 554 struct m_tag *mtag; 555 struct fw_hwaddr *destfw; 556 struct fw_xfer *xfer; 557 struct fw_xferq *xferq; 558 struct fw_pkt *fp; 559 uint16_t nodeid; 560 int error; 561 int i = 0; 562 563 GIANT_REQUIRED; 564 565 xfer = NULL; 566 xferq = fwip->fd.fc->atq; 567 while (xferq->queued < xferq->maxq - 1) { 568 xfer = STAILQ_FIRST(&fwip->xferlist); 569 if (xfer == NULL) { 570 printf("if_fwip: lack of xfer\n"); 571 return; 572 } 573 IF_DEQUEUE(&ifp->if_snd, m); 574 if (m == NULL) 575 break; 576 577 /* 578 * Dig out the link-level address which 579 * firewire_output got via arp or neighbour 580 * discovery. If we don't have a link-level address, 581 * just stick the thing on the broadcast channel. 582 */ 583 mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, 0); 584 if (mtag == NULL) 585 destfw = 0; 586 else 587 destfw = (struct fw_hwaddr *) (mtag + 1); 588 589 STAILQ_REMOVE_HEAD(&fwip->xferlist, link); 590 591 /* 592 * We don't do any bpf stuff here - the generic code 593 * in firewire_output gives the packet to bpf before 594 * it adds the link-level encapsulation. 595 */ 596 597 /* 598 * Put the mbuf in the xfer early in case we hit an 599 * error case below - fwip_output_callback will free 600 * the mbuf. 601 */ 602 xfer->mbuf = m; 603 604 /* 605 * We use the arp result (if any) to add a suitable firewire 606 * packet header before handing off to the bus. 607 */ 608 fp = &xfer->send.hdr; 609 nodeid = FWLOCALBUS | fc->nodeid; 610 if ((m->m_flags & M_BCAST) || !destfw) { 611 /* 612 * Broadcast packets are sent as GASP packets with 613 * specifier ID 0x00005e, version 1 on the broadcast 614 * channel. To be conservative, we send at the 615 * slowest possible speed. 616 */ 617 uint32_t *p; 618 619 M_PREPEND(m, 2*sizeof(uint32_t), M_DONTWAIT); 620 p = mtod(m, uint32_t *); 621 fp->mode.stream.len = m->m_pkthdr.len; 622 fp->mode.stream.chtag = broadcast_channel; 623 fp->mode.stream.tcode = FWTCODE_STREAM; 624 fp->mode.stream.sy = 0; 625 xfer->send.spd = 0; 626 p[0] = htonl(nodeid << 16); 627 p[1] = htonl((0x5e << 24) | 1); 628 } else { 629 /* 630 * Unicast packets are sent as block writes to the 631 * target's unicast fifo address. If we can't 632 * find the node address, we just give up. We 633 * could broadcast it but that might overflow 634 * the packet size limitations due to the 635 * extra GASP header. Note: the hardware 636 * address is stored in network byte order to 637 * make life easier for ARP. 638 */ 639 struct fw_device *fd; 640 struct fw_eui64 eui; 641 642 eui.hi = ntohl(destfw->sender_unique_ID_hi); 643 eui.lo = ntohl(destfw->sender_unique_ID_lo); 644 if (fwip->last_dest.hi != eui.hi || 645 fwip->last_dest.lo != eui.lo) { 646 fd = fw_noderesolve_eui64(fc, &eui); 647 if (!fd) { 648 /* error */ 649 ifp->if_oerrors ++; 650 /* XXX set error code */ 651 fwip_output_callback(xfer); 652 continue; 653 654 } 655 fwip->last_hdr.mode.wreqb.dst = FWLOCALBUS | fd->dst; 656 fwip->last_hdr.mode.wreqb.tlrt = 0; 657 fwip->last_hdr.mode.wreqb.tcode = FWTCODE_WREQB; 658 fwip->last_hdr.mode.wreqb.pri = 0; 659 fwip->last_hdr.mode.wreqb.src = nodeid; 660 fwip->last_hdr.mode.wreqb.dest_hi = 661 ntohs(destfw->sender_unicast_FIFO_hi); 662 fwip->last_hdr.mode.wreqb.dest_lo = 663 ntohl(destfw->sender_unicast_FIFO_lo); 664 fwip->last_hdr.mode.wreqb.extcode = 0; 665 fwip->last_dest = eui; 666 } 667 668 fp->mode.wreqb = fwip->last_hdr.mode.wreqb; 669 fp->mode.wreqb.len = m->m_pkthdr.len; 670 xfer->send.spd = min(destfw->sspd, fc->speed); 671 } 672 673 xfer->send.pay_len = m->m_pkthdr.len; 674 675 error = fw_asyreq(fc, -1, xfer); 676 if (error == EAGAIN) { 677 /* 678 * We ran out of tlabels - requeue the packet 679 * for later transmission. 680 */ 681 xfer->mbuf = 0; 682 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 683 IF_PREPEND(&ifp->if_snd, m); 684 break; 685 } 686 if (error) { 687 /* error */ 688 ifp->if_oerrors ++; 689 /* XXX set error code */ 690 fwip_output_callback(xfer); 691 continue; 692 } else { 693 ifp->if_opackets ++; 694 i++; 695 } 696 } 697 #if 0 698 if (i > 1) 699 printf("%d queued\n", i); 700 #endif 701 if (i > 0) { 702 #if 1 703 xferq->start(fc); 704 #else 705 taskqueue_enqueue(taskqueue_swi_giant, &fwip->start_send); 706 #endif 707 } 708 } 709 710 static void 711 fwip_start_send (void *arg, int count) 712 { 713 struct fwip_softc *fwip = arg; 714 715 GIANT_REQUIRED; 716 fwip->fd.fc->atq->start(fwip->fd.fc); 717 } 718 719 /* Async. stream output */ 720 static void 721 fwip_stream_input(struct fw_xferq *xferq) 722 { 723 struct mbuf *m, *m0; 724 struct m_tag *mtag; 725 struct ifnet *ifp; 726 struct fwip_softc *fwip; 727 struct fw_bulkxfer *sxfer; 728 struct fw_pkt *fp; 729 uint16_t src; 730 uint32_t *p; 731 732 GIANT_REQUIRED; 733 734 fwip = (struct fwip_softc *)xferq->sc; 735 ifp = fwip->fw_softc.fwip_ifp; 736 #if 0 737 FWIP_POLL_REGISTER(fwip_poll, fwip, ifp); 738 #endif 739 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 740 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 741 fp = mtod(sxfer->mbuf, struct fw_pkt *); 742 if (fwip->fd.fc->irx_post != NULL) 743 fwip->fd.fc->irx_post(fwip->fd.fc, fp->mode.ld); 744 m = sxfer->mbuf; 745 746 /* insert new rbuf */ 747 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 748 if (m0 != NULL) { 749 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 750 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 751 } else 752 printf("fwip_as_input: m_getcl failed\n"); 753 754 /* 755 * We must have a GASP header - leave the 756 * encapsulation sanity checks to the generic 757 * code. Remeber that we also have the firewire async 758 * stream header even though that isn't accounted for 759 * in mode.stream.len. 760 */ 761 if (sxfer->resp != 0 || fp->mode.stream.len < 762 2*sizeof(uint32_t)) { 763 m_freem(m); 764 ifp->if_ierrors ++; 765 continue; 766 } 767 m->m_len = m->m_pkthdr.len = fp->mode.stream.len 768 + sizeof(fp->mode.stream); 769 770 /* 771 * If we received the packet on the broadcast channel, 772 * mark it as broadcast, otherwise we assume it must 773 * be multicast. 774 */ 775 if (fp->mode.stream.chtag == broadcast_channel) 776 m->m_flags |= M_BCAST; 777 else 778 m->m_flags |= M_MCAST; 779 780 /* 781 * Make sure we recognise the GASP specifier and 782 * version. 783 */ 784 p = mtod(m, uint32_t *); 785 if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 0x00005e 786 || (ntohl(p[2]) & 0xffffff) != 1) { 787 FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n", 788 ntohl(p[1]), ntohl(p[2])); 789 m_freem(m); 790 ifp->if_ierrors ++; 791 continue; 792 } 793 794 /* 795 * Record the sender ID for possible BPF usage. 796 */ 797 src = ntohl(p[1]) >> 16; 798 if (ifp->if_bpf) { 799 mtag = m_tag_alloc(MTAG_FIREWIRE, 800 MTAG_FIREWIRE_SENDER_EUID, 801 2*sizeof(uint32_t), M_NOWAIT); 802 if (mtag) { 803 /* bpf wants it in network byte order */ 804 struct fw_device *fd; 805 uint32_t *p = (uint32_t *) (mtag + 1); 806 fd = fw_noderesolve_nodeid(fwip->fd.fc, 807 src & 0x3f); 808 if (fd) { 809 p[0] = htonl(fd->eui.hi); 810 p[1] = htonl(fd->eui.lo); 811 } else { 812 p[0] = 0; 813 p[1] = 0; 814 } 815 m_tag_prepend(m, mtag); 816 } 817 } 818 819 /* 820 * Trim off the GASP header 821 */ 822 m_adj(m, 3*sizeof(uint32_t)); 823 m->m_pkthdr.rcvif = ifp; 824 firewire_input(ifp, m, src); 825 ifp->if_ipackets ++; 826 } 827 if (STAILQ_FIRST(&xferq->stfree) != NULL) 828 fwip->fd.fc->irx_enable(fwip->fd.fc, fwip->dma_ch); 829 } 830 831 static __inline void 832 fwip_unicast_input_recycle(struct fwip_softc *fwip, struct fw_xfer *xfer) 833 { 834 struct mbuf *m; 835 836 GIANT_REQUIRED; 837 838 /* 839 * We have finished with a unicast xfer. Allocate a new 840 * cluster and stick it on the back of the input queue. 841 */ 842 m = m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 843 xfer->mbuf = m; 844 xfer->recv.payload = mtod(m, uint32_t *); 845 xfer->recv.pay_len = MCLBYTES; 846 xfer->mbuf = m; 847 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 848 } 849 850 static void 851 fwip_unicast_input(struct fw_xfer *xfer) 852 { 853 uint64_t address; 854 struct mbuf *m; 855 struct m_tag *mtag; 856 struct ifnet *ifp; 857 struct fwip_softc *fwip; 858 struct fw_pkt *fp; 859 //struct fw_pkt *sfp; 860 int rtcode; 861 862 GIANT_REQUIRED; 863 864 fwip = (struct fwip_softc *)xfer->sc; 865 ifp = fwip->fw_softc.fwip_ifp; 866 m = xfer->mbuf; 867 xfer->mbuf = 0; 868 fp = &xfer->recv.hdr; 869 870 /* 871 * Check the fifo address - we only accept addresses of 872 * exactly INET_FIFO. 873 */ 874 address = ((uint64_t)fp->mode.wreqb.dest_hi << 32) 875 | fp->mode.wreqb.dest_lo; 876 if (fp->mode.wreqb.tcode != FWTCODE_WREQB) { 877 rtcode = FWRCODE_ER_TYPE; 878 } else if (address != INET_FIFO) { 879 rtcode = FWRCODE_ER_ADDR; 880 } else { 881 rtcode = FWRCODE_COMPLETE; 882 } 883 884 /* 885 * Pick up a new mbuf and stick it on the back of the receive 886 * queue. 887 */ 888 fwip_unicast_input_recycle(fwip, xfer); 889 890 /* 891 * If we've already rejected the packet, give up now. 892 */ 893 if (rtcode != FWRCODE_COMPLETE) { 894 m_freem(m); 895 ifp->if_ierrors ++; 896 return; 897 } 898 899 if (ifp->if_bpf) { 900 /* 901 * Record the sender ID for possible BPF usage. 902 */ 903 mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_SENDER_EUID, 904 2*sizeof(uint32_t), M_NOWAIT); 905 if (mtag) { 906 /* bpf wants it in network byte order */ 907 struct fw_device *fd; 908 uint32_t *p = (uint32_t *) (mtag + 1); 909 fd = fw_noderesolve_nodeid(fwip->fd.fc, 910 fp->mode.wreqb.src & 0x3f); 911 if (fd) { 912 p[0] = htonl(fd->eui.hi); 913 p[1] = htonl(fd->eui.lo); 914 } else { 915 p[0] = 0; 916 p[1] = 0; 917 } 918 m_tag_prepend(m, mtag); 919 } 920 } 921 922 /* 923 * Hand off to the generic encapsulation code. We don't use 924 * ifp->if_input so that we can pass the source nodeid as an 925 * argument to facilitate link-level fragment reassembly. 926 */ 927 m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len; 928 m->m_pkthdr.rcvif = ifp; 929 firewire_input(ifp, m, fp->mode.wreqb.src); 930 ifp->if_ipackets ++; 931 } 932 933 static devclass_t fwip_devclass; 934 935 static device_method_t fwip_methods[] = { 936 /* device interface */ 937 DEVMETHOD(device_identify, fwip_identify), 938 DEVMETHOD(device_probe, fwip_probe), 939 DEVMETHOD(device_attach, fwip_attach), 940 DEVMETHOD(device_detach, fwip_detach), 941 { 0, 0 } 942 }; 943 944 static driver_t fwip_driver = { 945 "fwip", 946 fwip_methods, 947 sizeof(struct fwip_softc), 948 }; 949 950 951 #ifdef __DragonFly__ 952 DECLARE_DUMMY_MODULE(fwip); 953 #endif 954 DRIVER_MODULE(fwip, firewire, fwip_driver, fwip_devclass, 0, 0); 955 MODULE_VERSION(fwip, 1); 956 MODULE_DEPEND(fwip, firewire, 1, 1, 1); 957