if_fwip.c revision 167632
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 167632 2007-03-16 05:39:33Z simokawa $ 37 */ 38 39#ifdef HAVE_KERNEL_OPTION_HEADERS 40#include "opt_device_polling.h" 41#include "opt_inet.h" 42#endif 43 44#include <sys/param.h> 45#include <sys/kernel.h> 46#include <sys/malloc.h> 47#include <sys/mbuf.h> 48#include <sys/socket.h> 49#include <sys/sockio.h> 50#include <sys/sysctl.h> 51#include <sys/systm.h> 52#include <sys/taskqueue.h> 53#include <sys/module.h> 54#include <sys/bus.h> 55#include <machine/bus.h> 56 57#include <net/bpf.h> 58#include <net/if.h> 59#include <net/firewire.h> 60#include <net/if_arp.h> 61#include <net/if_types.h> 62#ifdef __DragonFly__ 63#include <bus/firewire/firewire.h> 64#include <bus/firewire/firewirereg.h> 65#include "if_fwipvar.h" 66#else 67#include <dev/firewire/firewire.h> 68#include <dev/firewire/firewirereg.h> 69#include <dev/firewire/iec13213.h> 70#include <dev/firewire/if_fwipvar.h> 71#endif 72 73/* 74 * We really need a mechanism for allocating regions in the FIFO 75 * address space. We pick a address in the OHCI controller's 'middle' 76 * address space. This means that the controller will automatically 77 * send responses for us, which is fine since we don't have any 78 * important information to put in the response anyway. 79 */ 80#define INET_FIFO 0xfffe00000000LL 81 82#define FWIPDEBUG if (fwipdebug) if_printf 83#define TX_MAX_QUEUE (FWMAXQUEUE - 1) 84 85/* network interface */ 86static void fwip_start (struct ifnet *); 87static int fwip_ioctl (struct ifnet *, u_long, caddr_t); 88static void fwip_init (void *); 89 90static void fwip_post_busreset (void *); 91static void fwip_output_callback (struct fw_xfer *); 92static void fwip_async_output (struct fwip_softc *, struct ifnet *); 93static void fwip_start_send (void *, int); 94static void fwip_stream_input (struct fw_xferq *); 95static void fwip_unicast_input(struct fw_xfer *); 96 97static int fwipdebug = 0; 98static int broadcast_channel = 0xc0 | 0x1f; /* tag | channel(XXX) */ 99static int tx_speed = 2; 100static int rx_queue_len = FWMAXQUEUE; 101 102MALLOC_DEFINE(M_FWIP, "if_fwip", "IP over FireWire interface"); 103SYSCTL_INT(_debug, OID_AUTO, if_fwip_debug, CTLFLAG_RW, &fwipdebug, 0, ""); 104SYSCTL_DECL(_hw_firewire); 105SYSCTL_NODE(_hw_firewire, OID_AUTO, fwip, CTLFLAG_RD, 0, 106 "Firewire ip subsystem"); 107SYSCTL_INT(_hw_firewire_fwip, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len, 108 0, "Length of the receive queue"); 109 110TUNABLE_INT("hw.firewire.fwip.rx_queue_len", &rx_queue_len); 111 112#ifdef DEVICE_POLLING 113static poll_handler_t fwip_poll; 114 115static void 116fwip_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 117{ 118 struct fwip_softc *fwip; 119 struct firewire_comm *fc; 120 121 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 122 return; 123 124 fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 125 fc = fwip->fd.fc; 126 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 127} 128#endif /* DEVICE_POLLING */ 129 130static void 131fwip_identify(driver_t *driver, device_t parent) 132{ 133 BUS_ADD_CHILD(parent, 0, "fwip", device_get_unit(parent)); 134} 135 136static int 137fwip_probe(device_t dev) 138{ 139 device_t pa; 140 141 pa = device_get_parent(dev); 142 if(device_get_unit(dev) != device_get_unit(pa)){ 143 return(ENXIO); 144 } 145 146 device_set_desc(dev, "IP over FireWire"); 147 return (0); 148} 149 150static int 151fwip_attach(device_t dev) 152{ 153 struct fwip_softc *fwip; 154 struct ifnet *ifp; 155 int unit, s; 156 struct fw_hwaddr *hwaddr; 157 158 fwip = ((struct fwip_softc *)device_get_softc(dev)); 159 unit = device_get_unit(dev); 160 ifp = fwip->fw_softc.fwip_ifp = if_alloc(IFT_IEEE1394); 161 if (ifp == NULL) 162 return (ENOSPC); 163 164 /* XXX */ 165 fwip->dma_ch = -1; 166 167 fwip->fd.fc = device_get_ivars(dev); 168 if (tx_speed < 0) 169 tx_speed = fwip->fd.fc->speed; 170 171 fwip->fd.dev = dev; 172 fwip->fd.post_explore = NULL; 173 fwip->fd.post_busreset = fwip_post_busreset; 174 fwip->fw_softc.fwip = fwip; 175 TASK_INIT(&fwip->start_send, 0, fwip_start_send, fwip); 176 177 /* 178 * Encode our hardware the way that arp likes it. 179 */ 180 hwaddr = &IFP2FWC(fwip->fw_softc.fwip_ifp)->fc_hwaddr; 181 hwaddr->sender_unique_ID_hi = htonl(fwip->fd.fc->eui.hi); 182 hwaddr->sender_unique_ID_lo = htonl(fwip->fd.fc->eui.lo); 183 hwaddr->sender_max_rec = fwip->fd.fc->maxrec; 184 hwaddr->sspd = fwip->fd.fc->speed; 185 hwaddr->sender_unicast_FIFO_hi = htons((uint16_t)(INET_FIFO >> 32)); 186 hwaddr->sender_unicast_FIFO_lo = htonl((uint32_t)INET_FIFO); 187 188 /* fill the rest and attach interface */ 189 ifp->if_softc = &fwip->fw_softc; 190 191#if __FreeBSD_version >= 501113 || defined(__DragonFly__) 192 if_initname(ifp, device_get_name(dev), unit); 193#else 194 ifp->if_unit = unit; 195 ifp->if_name = "fwip"; 196#endif 197 ifp->if_init = fwip_init; 198 ifp->if_start = fwip_start; 199 ifp->if_ioctl = fwip_ioctl; 200 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST| 201 IFF_NEEDSGIANT); 202 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 203#ifdef DEVICE_POLLING 204 ifp->if_capabilities |= IFCAP_POLLING; 205#endif 206 207 s = splimp(); 208 firewire_ifattach(ifp, hwaddr); 209 splx(s); 210 211 FWIPDEBUG(ifp, "interface created\n"); 212 return 0; 213} 214 215static void 216fwip_stop(struct fwip_softc *fwip) 217{ 218 struct firewire_comm *fc; 219 struct fw_xferq *xferq; 220 struct ifnet *ifp = fwip->fw_softc.fwip_ifp; 221 struct fw_xfer *xfer, *next; 222 int i; 223 224 fc = fwip->fd.fc; 225 226 if (fwip->dma_ch >= 0) { 227 xferq = fc->ir[fwip->dma_ch]; 228 229 if (xferq->flag & FWXFERQ_RUNNING) 230 fc->irx_disable(fc, fwip->dma_ch); 231 xferq->flag &= 232 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 233 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 234 xferq->hand = NULL; 235 236 for (i = 0; i < xferq->bnchunk; i ++) 237 m_freem(xferq->bulkxfer[i].mbuf); 238 free(xferq->bulkxfer, M_FWIP); 239 240 fw_bindremove(fc, &fwip->fwb); 241 for (xfer = STAILQ_FIRST(&fwip->fwb.xferlist); xfer != NULL; 242 xfer = next) { 243 next = STAILQ_NEXT(xfer, link); 244 fw_xfer_free(xfer); 245 } 246 247 for (xfer = STAILQ_FIRST(&fwip->xferlist); xfer != NULL; 248 xfer = next) { 249 next = STAILQ_NEXT(xfer, link); 250 fw_xfer_free(xfer); 251 } 252 STAILQ_INIT(&fwip->xferlist); 253 254 xferq->bulkxfer = NULL; 255 fwip->dma_ch = -1; 256 } 257 258#if defined(__FreeBSD__) 259 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 260#else 261 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 262#endif 263} 264 265static int 266fwip_detach(device_t dev) 267{ 268 struct fwip_softc *fwip; 269 struct ifnet *ifp; 270 int s; 271 272 fwip = (struct fwip_softc *)device_get_softc(dev); 273 ifp = fwip->fw_softc.fwip_ifp; 274 275#ifdef DEVICE_POLLING 276 if (ifp->if_capenable & IFCAP_POLLING) 277 ether_poll_deregister(ifp); 278#endif 279 280 s = splimp(); 281 282 fwip_stop(fwip); 283 firewire_ifdetach(ifp); 284 if_free(ifp); 285 286 splx(s); 287 return 0; 288} 289 290static void 291fwip_init(void *arg) 292{ 293 struct fwip_softc *fwip = ((struct fwip_eth_softc *)arg)->fwip; 294 struct firewire_comm *fc; 295 struct ifnet *ifp = fwip->fw_softc.fwip_ifp; 296 struct fw_xferq *xferq; 297 struct fw_xfer *xfer; 298 struct mbuf *m; 299 int i; 300 301 FWIPDEBUG(ifp, "initializing\n"); 302 303 fc = fwip->fd.fc; 304#define START 0 305 if (fwip->dma_ch < 0) { 306 for (i = START; i < fc->nisodma; i ++) { 307 xferq = fc->ir[i]; 308 if ((xferq->flag & FWXFERQ_OPEN) == 0) 309 goto found; 310 } 311 printf("no free dma channel\n"); 312 return; 313found: 314 fwip->dma_ch = i; 315 /* allocate DMA channel and init packet mode */ 316 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF | 317 FWXFERQ_HANDLER | FWXFERQ_STREAM; 318 xferq->flag &= ~0xff; 319 xferq->flag |= broadcast_channel & 0xff; 320 /* register fwip_input handler */ 321 xferq->sc = (caddr_t) fwip; 322 xferq->hand = fwip_stream_input; 323 xferq->bnchunk = rx_queue_len; 324 xferq->bnpacket = 1; 325 xferq->psize = MCLBYTES; 326 xferq->queued = 0; 327 xferq->buf = NULL; 328 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 329 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 330 M_FWIP, M_WAITOK); 331 if (xferq->bulkxfer == NULL) { 332 printf("if_fwip: malloc failed\n"); 333 return; 334 } 335 STAILQ_INIT(&xferq->stvalid); 336 STAILQ_INIT(&xferq->stfree); 337 STAILQ_INIT(&xferq->stdma); 338 xferq->stproc = NULL; 339 for (i = 0; i < xferq->bnchunk; i ++) { 340 m = 341#if defined(__DragonFly__) || __FreeBSD_version < 500000 342 m_getcl(M_WAIT, MT_DATA, M_PKTHDR); 343#else 344 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 345#endif 346 xferq->bulkxfer[i].mbuf = m; 347 if (m != NULL) { 348 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 349 STAILQ_INSERT_TAIL(&xferq->stfree, 350 &xferq->bulkxfer[i], link); 351 } else 352 printf("fwip_as_input: m_getcl failed\n"); 353 } 354 355 fwip->fwb.start = INET_FIFO; 356 fwip->fwb.end = INET_FIFO + 16384; /* S3200 packet size */ 357 fwip->fwb.act_type = FWACT_XFER; 358 359 /* pre-allocate xfer */ 360 STAILQ_INIT(&fwip->fwb.xferlist); 361 for (i = 0; i < rx_queue_len; i ++) { 362 xfer = fw_xfer_alloc(M_FWIP); 363 if (xfer == NULL) 364 break; 365 m = m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 366 xfer->recv.payload = mtod(m, uint32_t *); 367 xfer->recv.pay_len = MCLBYTES; 368 xfer->hand = fwip_unicast_input; 369 xfer->fc = fc; 370 xfer->sc = (caddr_t)fwip; 371 xfer->mbuf = m; 372 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 373 } 374 fw_bindadd(fc, &fwip->fwb); 375 376 STAILQ_INIT(&fwip->xferlist); 377 for (i = 0; i < TX_MAX_QUEUE; i++) { 378 xfer = fw_xfer_alloc(M_FWIP); 379 if (xfer == NULL) 380 break; 381 xfer->send.spd = tx_speed; 382 xfer->fc = fwip->fd.fc; 383 xfer->sc = (caddr_t)fwip; 384 xfer->hand = fwip_output_callback; 385 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 386 } 387 } else 388 xferq = fc->ir[fwip->dma_ch]; 389 390 fwip->last_dest.hi = 0; 391 fwip->last_dest.lo = 0; 392 393 /* start dma */ 394 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 395 fc->irx_enable(fc, fwip->dma_ch); 396 397#if defined(__FreeBSD__) 398 ifp->if_drv_flags |= IFF_DRV_RUNNING; 399 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 400#else 401 ifp->if_flags |= IFF_RUNNING; 402 ifp->if_flags &= ~IFF_OACTIVE; 403#endif 404 405#if 0 406 /* attempt to start output */ 407 fwip_start(ifp); 408#endif 409} 410 411static int 412fwip_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 413{ 414 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 415 int s, error; 416 417 switch (cmd) { 418 case SIOCSIFFLAGS: 419 s = splimp(); 420 if (ifp->if_flags & IFF_UP) { 421#if defined(__FreeBSD__) 422 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 423#else 424 if (!(ifp->if_flags & IFF_RUNNING)) 425#endif 426 fwip_init(&fwip->fw_softc); 427 } else { 428#if defined(__FreeBSD__) 429 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 430#else 431 if (ifp->if_flags & IFF_RUNNING) 432#endif 433 fwip_stop(fwip); 434 } 435 splx(s); 436 break; 437 case SIOCADDMULTI: 438 case SIOCDELMULTI: 439 break; 440 case SIOCSIFCAP: 441#ifdef DEVICE_POLLING 442 { 443 struct ifreq *ifr = (struct ifreq *) data; 444 struct firewire_comm *fc = fc = fwip->fd.fc; 445 446 if (ifr->ifr_reqcap & IFCAP_POLLING && 447 !(ifp->if_capenable & IFCAP_POLLING)) { 448 error = ether_poll_register(fwip_poll, ifp); 449 if (error) 450 return(error); 451 /* Disable interrupts */ 452 fc->set_intr(fc, 0); 453 ifp->if_capenable |= IFCAP_POLLING; 454 return (error); 455 456 } 457 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 458 ifp->if_capenable & IFCAP_POLLING) { 459 error = ether_poll_deregister(ifp); 460 /* Enable interrupts. */ 461 fc->set_intr(fc, 1); 462 ifp->if_capenable &= ~IFCAP_POLLING; 463 return (error); 464 } 465 } 466#endif /* DEVICE_POLLING */ 467 break; 468#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 469 default: 470#else 471 case SIOCSIFADDR: 472 case SIOCGIFADDR: 473 case SIOCSIFMTU: 474#endif 475 s = splimp(); 476 error = firewire_ioctl(ifp, cmd, data); 477 splx(s); 478 return (error); 479#if defined(__DragonFly__) || __FreeBSD_version < 500000 480 default: 481 return (EINVAL); 482#endif 483 } 484 485 return (0); 486} 487 488static void 489fwip_post_busreset(void *arg) 490{ 491 struct fwip_softc *fwip = arg; 492 struct crom_src *src; 493 struct crom_chunk *root; 494 495 src = fwip->fd.fc->crom_src; 496 root = fwip->fd.fc->crom_root; 497 498 /* RFC2734 IPv4 over IEEE1394 */ 499 bzero(&fwip->unit4, sizeof(struct crom_chunk)); 500 crom_add_chunk(src, root, &fwip->unit4, CROM_UDIR); 501 crom_add_entry(&fwip->unit4, CSRKEY_SPEC, CSRVAL_IETF); 502 crom_add_simple_text(src, &fwip->unit4, &fwip->spec4, "IANA"); 503 crom_add_entry(&fwip->unit4, CSRKEY_VER, 1); 504 crom_add_simple_text(src, &fwip->unit4, &fwip->ver4, "IPv4"); 505 506 /* RFC3146 IPv6 over IEEE1394 */ 507 bzero(&fwip->unit6, sizeof(struct crom_chunk)); 508 crom_add_chunk(src, root, &fwip->unit6, CROM_UDIR); 509 crom_add_entry(&fwip->unit6, CSRKEY_SPEC, CSRVAL_IETF); 510 crom_add_simple_text(src, &fwip->unit6, &fwip->spec6, "IANA"); 511 crom_add_entry(&fwip->unit6, CSRKEY_VER, 2); 512 crom_add_simple_text(src, &fwip->unit6, &fwip->ver6, "IPv6"); 513 514 fwip->last_dest.hi = 0; 515 fwip->last_dest.lo = 0; 516 firewire_busreset(fwip->fw_softc.fwip_ifp); 517} 518 519static void 520fwip_output_callback(struct fw_xfer *xfer) 521{ 522 struct fwip_softc *fwip; 523 struct ifnet *ifp; 524 int s; 525 526 GIANT_REQUIRED; 527 528 fwip = (struct fwip_softc *)xfer->sc; 529 ifp = fwip->fw_softc.fwip_ifp; 530 /* XXX error check */ 531 FWIPDEBUG(ifp, "resp = %d\n", xfer->resp); 532 if (xfer->resp != 0) 533 ifp->if_oerrors ++; 534 535 m_freem(xfer->mbuf); 536 fw_xfer_unload(xfer); 537 538 s = splimp(); 539 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 540 splx(s); 541 542 /* for queue full */ 543 if (ifp->if_snd.ifq_head != NULL) 544 fwip_start(ifp); 545} 546 547static void 548fwip_start(struct ifnet *ifp) 549{ 550 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 551 int s; 552 553 GIANT_REQUIRED; 554 555 FWIPDEBUG(ifp, "starting\n"); 556 557 if (fwip->dma_ch < 0) { 558 struct mbuf *m = NULL; 559 560 FWIPDEBUG(ifp, "not ready\n"); 561 562 s = splimp(); 563 do { 564 IF_DEQUEUE(&ifp->if_snd, m); 565 if (m != NULL) 566 m_freem(m); 567 ifp->if_oerrors ++; 568 } while (m != NULL); 569 splx(s); 570 571 return; 572 } 573 574 s = splimp(); 575#if defined(__FreeBSD__) 576 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 577#else 578 ifp->if_flags |= IFF_OACTIVE; 579#endif 580 581 if (ifp->if_snd.ifq_len != 0) 582 fwip_async_output(fwip, ifp); 583 584#if defined(__FreeBSD__) 585 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 586#else 587 ifp->if_flags &= ~IFF_OACTIVE; 588#endif 589 splx(s); 590} 591 592/* Async. stream output */ 593static void 594fwip_async_output(struct fwip_softc *fwip, struct ifnet *ifp) 595{ 596 struct firewire_comm *fc = fwip->fd.fc; 597 struct mbuf *m; 598 struct m_tag *mtag; 599 struct fw_hwaddr *destfw; 600 struct fw_xfer *xfer; 601 struct fw_xferq *xferq; 602 struct fw_pkt *fp; 603 uint16_t nodeid; 604 int error; 605 int i = 0; 606 607 GIANT_REQUIRED; 608 609 xfer = NULL; 610 xferq = fwip->fd.fc->atq; 611 while (xferq->queued < xferq->maxq - 1) { 612 xfer = STAILQ_FIRST(&fwip->xferlist); 613 if (xfer == NULL) { 614 printf("if_fwip: lack of xfer\n"); 615 return; 616 } 617 IF_DEQUEUE(&ifp->if_snd, m); 618 if (m == NULL) 619 break; 620 621 /* 622 * Dig out the link-level address which 623 * firewire_output got via arp or neighbour 624 * discovery. If we don't have a link-level address, 625 * just stick the thing on the broadcast channel. 626 */ 627 mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, 0); 628 if (mtag == NULL) 629 destfw = 0; 630 else 631 destfw = (struct fw_hwaddr *) (mtag + 1); 632 633 STAILQ_REMOVE_HEAD(&fwip->xferlist, link); 634 635 /* 636 * We don't do any bpf stuff here - the generic code 637 * in firewire_output gives the packet to bpf before 638 * it adds the link-level encapsulation. 639 */ 640 641 /* 642 * Put the mbuf in the xfer early in case we hit an 643 * error case below - fwip_output_callback will free 644 * the mbuf. 645 */ 646 xfer->mbuf = m; 647 648 /* 649 * We use the arp result (if any) to add a suitable firewire 650 * packet header before handing off to the bus. 651 */ 652 fp = &xfer->send.hdr; 653 nodeid = FWLOCALBUS | fc->nodeid; 654 if ((m->m_flags & M_BCAST) || !destfw) { 655 /* 656 * Broadcast packets are sent as GASP packets with 657 * specifier ID 0x00005e, version 1 on the broadcast 658 * channel. To be conservative, we send at the 659 * slowest possible speed. 660 */ 661 uint32_t *p; 662 663 M_PREPEND(m, 2*sizeof(uint32_t), M_DONTWAIT); 664 p = mtod(m, uint32_t *); 665 fp->mode.stream.len = m->m_pkthdr.len; 666 fp->mode.stream.chtag = broadcast_channel; 667 fp->mode.stream.tcode = FWTCODE_STREAM; 668 fp->mode.stream.sy = 0; 669 xfer->send.spd = 0; 670 p[0] = htonl(nodeid << 16); 671 p[1] = htonl((0x5e << 24) | 1); 672 } else { 673 /* 674 * Unicast packets are sent as block writes to the 675 * target's unicast fifo address. If we can't 676 * find the node address, we just give up. We 677 * could broadcast it but that might overflow 678 * the packet size limitations due to the 679 * extra GASP header. Note: the hardware 680 * address is stored in network byte order to 681 * make life easier for ARP. 682 */ 683 struct fw_device *fd; 684 struct fw_eui64 eui; 685 686 eui.hi = ntohl(destfw->sender_unique_ID_hi); 687 eui.lo = ntohl(destfw->sender_unique_ID_lo); 688 if (fwip->last_dest.hi != eui.hi || 689 fwip->last_dest.lo != eui.lo) { 690 fd = fw_noderesolve_eui64(fc, &eui); 691 if (!fd) { 692 /* error */ 693 ifp->if_oerrors ++; 694 /* XXX set error code */ 695 fwip_output_callback(xfer); 696 continue; 697 698 } 699 fwip->last_hdr.mode.wreqb.dst = FWLOCALBUS | fd->dst; 700 fwip->last_hdr.mode.wreqb.tlrt = 0; 701 fwip->last_hdr.mode.wreqb.tcode = FWTCODE_WREQB; 702 fwip->last_hdr.mode.wreqb.pri = 0; 703 fwip->last_hdr.mode.wreqb.src = nodeid; 704 fwip->last_hdr.mode.wreqb.dest_hi = 705 ntohs(destfw->sender_unicast_FIFO_hi); 706 fwip->last_hdr.mode.wreqb.dest_lo = 707 ntohl(destfw->sender_unicast_FIFO_lo); 708 fwip->last_hdr.mode.wreqb.extcode = 0; 709 fwip->last_dest = eui; 710 } 711 712 fp->mode.wreqb = fwip->last_hdr.mode.wreqb; 713 fp->mode.wreqb.len = m->m_pkthdr.len; 714 xfer->send.spd = min(destfw->sspd, fc->speed); 715 } 716 717 xfer->send.pay_len = m->m_pkthdr.len; 718 719 error = fw_asyreq(fc, -1, xfer); 720 if (error == EAGAIN) { 721 /* 722 * We ran out of tlabels - requeue the packet 723 * for later transmission. 724 */ 725 xfer->mbuf = 0; 726 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 727 IF_PREPEND(&ifp->if_snd, m); 728 break; 729 } 730 if (error) { 731 /* error */ 732 ifp->if_oerrors ++; 733 /* XXX set error code */ 734 fwip_output_callback(xfer); 735 continue; 736 } else { 737 ifp->if_opackets ++; 738 i++; 739 } 740 } 741#if 0 742 if (i > 1) 743 printf("%d queued\n", i); 744#endif 745 if (i > 0) { 746#if 1 747 xferq->start(fc); 748#else 749 taskqueue_enqueue(taskqueue_swi_giant, &fwip->start_send); 750#endif 751 } 752} 753 754static void 755fwip_start_send (void *arg, int count) 756{ 757 struct fwip_softc *fwip = arg; 758 759 GIANT_REQUIRED; 760 fwip->fd.fc->atq->start(fwip->fd.fc); 761} 762 763/* Async. stream output */ 764static void 765fwip_stream_input(struct fw_xferq *xferq) 766{ 767 struct mbuf *m, *m0; 768 struct m_tag *mtag; 769 struct ifnet *ifp; 770 struct fwip_softc *fwip; 771 struct fw_bulkxfer *sxfer; 772 struct fw_pkt *fp; 773 uint16_t src; 774 uint32_t *p; 775 776 GIANT_REQUIRED; 777 778 fwip = (struct fwip_softc *)xferq->sc; 779 ifp = fwip->fw_softc.fwip_ifp; 780 781 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 782 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 783 fp = mtod(sxfer->mbuf, struct fw_pkt *); 784 if (fwip->fd.fc->irx_post != NULL) 785 fwip->fd.fc->irx_post(fwip->fd.fc, fp->mode.ld); 786 m = sxfer->mbuf; 787 788 /* insert new rbuf */ 789 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 790 if (m0 != NULL) { 791 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 792 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 793 } else 794 printf("fwip_as_input: m_getcl failed\n"); 795 796 /* 797 * We must have a GASP header - leave the 798 * encapsulation sanity checks to the generic 799 * code. Remeber that we also have the firewire async 800 * stream header even though that isn't accounted for 801 * in mode.stream.len. 802 */ 803 if (sxfer->resp != 0 || fp->mode.stream.len < 804 2*sizeof(uint32_t)) { 805 m_freem(m); 806 ifp->if_ierrors ++; 807 continue; 808 } 809 m->m_len = m->m_pkthdr.len = fp->mode.stream.len 810 + sizeof(fp->mode.stream); 811 812 /* 813 * If we received the packet on the broadcast channel, 814 * mark it as broadcast, otherwise we assume it must 815 * be multicast. 816 */ 817 if (fp->mode.stream.chtag == broadcast_channel) 818 m->m_flags |= M_BCAST; 819 else 820 m->m_flags |= M_MCAST; 821 822 /* 823 * Make sure we recognise the GASP specifier and 824 * version. 825 */ 826 p = mtod(m, uint32_t *); 827 if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 0x00005e 828 || (ntohl(p[2]) & 0xffffff) != 1) { 829 FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n", 830 ntohl(p[1]), ntohl(p[2])); 831 m_freem(m); 832 ifp->if_ierrors ++; 833 continue; 834 } 835 836 /* 837 * Record the sender ID for possible BPF usage. 838 */ 839 src = ntohl(p[1]) >> 16; 840 if (bpf_peers_present(ifp->if_bpf)) { 841 mtag = m_tag_alloc(MTAG_FIREWIRE, 842 MTAG_FIREWIRE_SENDER_EUID, 843 2*sizeof(uint32_t), M_NOWAIT); 844 if (mtag) { 845 /* bpf wants it in network byte order */ 846 struct fw_device *fd; 847 uint32_t *p = (uint32_t *) (mtag + 1); 848 fd = fw_noderesolve_nodeid(fwip->fd.fc, 849 src & 0x3f); 850 if (fd) { 851 p[0] = htonl(fd->eui.hi); 852 p[1] = htonl(fd->eui.lo); 853 } else { 854 p[0] = 0; 855 p[1] = 0; 856 } 857 m_tag_prepend(m, mtag); 858 } 859 } 860 861 /* 862 * Trim off the GASP header 863 */ 864 m_adj(m, 3*sizeof(uint32_t)); 865 m->m_pkthdr.rcvif = ifp; 866 firewire_input(ifp, m, src); 867 ifp->if_ipackets ++; 868 } 869 if (STAILQ_FIRST(&xferq->stfree) != NULL) 870 fwip->fd.fc->irx_enable(fwip->fd.fc, fwip->dma_ch); 871} 872 873static __inline void 874fwip_unicast_input_recycle(struct fwip_softc *fwip, struct fw_xfer *xfer) 875{ 876 struct mbuf *m; 877 878 GIANT_REQUIRED; 879 880 /* 881 * We have finished with a unicast xfer. Allocate a new 882 * cluster and stick it on the back of the input queue. 883 */ 884 m = m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 885 xfer->mbuf = m; 886 xfer->recv.payload = mtod(m, uint32_t *); 887 xfer->recv.pay_len = MCLBYTES; 888 xfer->mbuf = m; 889 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 890} 891 892static void 893fwip_unicast_input(struct fw_xfer *xfer) 894{ 895 uint64_t address; 896 struct mbuf *m; 897 struct m_tag *mtag; 898 struct ifnet *ifp; 899 struct fwip_softc *fwip; 900 struct fw_pkt *fp; 901 //struct fw_pkt *sfp; 902 int rtcode; 903 904 GIANT_REQUIRED; 905 906 fwip = (struct fwip_softc *)xfer->sc; 907 ifp = fwip->fw_softc.fwip_ifp; 908 m = xfer->mbuf; 909 xfer->mbuf = 0; 910 fp = &xfer->recv.hdr; 911 912 /* 913 * Check the fifo address - we only accept addresses of 914 * exactly INET_FIFO. 915 */ 916 address = ((uint64_t)fp->mode.wreqb.dest_hi << 32) 917 | fp->mode.wreqb.dest_lo; 918 if (fp->mode.wreqb.tcode != FWTCODE_WREQB) { 919 rtcode = FWRCODE_ER_TYPE; 920 } else if (address != INET_FIFO) { 921 rtcode = FWRCODE_ER_ADDR; 922 } else { 923 rtcode = FWRCODE_COMPLETE; 924 } 925 926 /* 927 * Pick up a new mbuf and stick it on the back of the receive 928 * queue. 929 */ 930 fwip_unicast_input_recycle(fwip, xfer); 931 932 /* 933 * If we've already rejected the packet, give up now. 934 */ 935 if (rtcode != FWRCODE_COMPLETE) { 936 m_freem(m); 937 ifp->if_ierrors ++; 938 return; 939 } 940 941 if (bpf_peers_present(ifp->if_bpf)) { 942 /* 943 * Record the sender ID for possible BPF usage. 944 */ 945 mtag = m_tag_alloc(MTAG_FIREWIRE, 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 *p = (uint32_t *) (mtag + 1); 951 fd = fw_noderesolve_nodeid(fwip->fd.fc, 952 fp->mode.wreqb.src & 0x3f); 953 if (fd) { 954 p[0] = htonl(fd->eui.hi); 955 p[1] = htonl(fd->eui.lo); 956 } else { 957 p[0] = 0; 958 p[1] = 0; 959 } 960 m_tag_prepend(m, mtag); 961 } 962 } 963 964 /* 965 * Hand off to the generic encapsulation code. We don't use 966 * ifp->if_input so that we can pass the source nodeid as an 967 * argument to facilitate link-level fragment reassembly. 968 */ 969 m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len; 970 m->m_pkthdr.rcvif = ifp; 971 firewire_input(ifp, m, fp->mode.wreqb.src); 972 ifp->if_ipackets ++; 973} 974 975static devclass_t fwip_devclass; 976 977static device_method_t fwip_methods[] = { 978 /* device interface */ 979 DEVMETHOD(device_identify, fwip_identify), 980 DEVMETHOD(device_probe, fwip_probe), 981 DEVMETHOD(device_attach, fwip_attach), 982 DEVMETHOD(device_detach, fwip_detach), 983 { 0, 0 } 984}; 985 986static driver_t fwip_driver = { 987 "fwip", 988 fwip_methods, 989 sizeof(struct fwip_softc), 990}; 991 992 993#ifdef __DragonFly__ 994DECLARE_DUMMY_MODULE(fwip); 995#endif 996DRIVER_MODULE(fwip, firewire, fwip_driver, fwip_devclass, 0, 0); 997MODULE_VERSION(fwip, 1); 998MODULE_DEPEND(fwip, firewire, 1, 1, 1); 999