if_fwip.c revision 150968
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 150968 2005-10-05 10:09:17Z glebius $ 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->act.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->retry_req = fw_asybusy; 384 xfer->sc = (caddr_t)fwip; 385 xfer->act.hand = fwip_output_callback; 386 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 387 } 388 } else 389 xferq = fc->ir[fwip->dma_ch]; 390 391 fwip->last_dest.hi = 0; 392 fwip->last_dest.lo = 0; 393 394 /* start dma */ 395 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 396 fc->irx_enable(fc, fwip->dma_ch); 397 398#if defined(__FreeBSD__) 399 ifp->if_drv_flags |= IFF_DRV_RUNNING; 400 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 401#else 402 ifp->if_flags |= IFF_RUNNING; 403 ifp->if_flags &= ~IFF_OACTIVE; 404#endif 405 406#if 0 407 /* attempt to start output */ 408 fwip_start(ifp); 409#endif 410} 411 412static int 413fwip_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 414{ 415 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 416 int s, error; 417 418 switch (cmd) { 419 case SIOCSIFFLAGS: 420 s = splimp(); 421 if (ifp->if_flags & IFF_UP) { 422#if defined(__FreeBSD__) 423 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 424#else 425 if (!(ifp->if_flags & IFF_RUNNING)) 426#endif 427 fwip_init(&fwip->fw_softc); 428 } else { 429#if defined(__FreeBSD__) 430 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 431#else 432 if (ifp->if_flags & IFF_RUNNING) 433#endif 434 fwip_stop(fwip); 435 } 436 splx(s); 437 break; 438 case SIOCADDMULTI: 439 case SIOCDELMULTI: 440 break; 441 case SIOCSIFCAP: 442#ifdef DEVICE_POLLING 443 { 444 struct ifreq *ifr = (struct ifreq *) data; 445 struct firewire_comm *fc = fc = fwip->fd.fc; 446 447 if (ifr->ifr_reqcap & IFCAP_POLLING && 448 !(ifp->if_capenable & IFCAP_POLLING)) { 449 error = ether_poll_register(fwip_poll, ifp); 450 if (error) 451 return(error); 452 /* Disable interrupts */ 453 fc->set_intr(fc, 0); 454 ifp->if_capenable |= IFCAP_POLLING; 455 return (error); 456 457 } 458 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 459 ifp->if_capenable & IFCAP_POLLING) { 460 error = ether_poll_deregister(ifp); 461 /* Enable interrupts. */ 462 fc->set_intr(fc, 1); 463 ifp->if_capenable &= ~IFCAP_POLLING; 464 return (error); 465 } 466 } 467#endif /* DEVICE_POLLING */ 468 break; 469#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 470 default: 471#else 472 case SIOCSIFADDR: 473 case SIOCGIFADDR: 474 case SIOCSIFMTU: 475#endif 476 s = splimp(); 477 error = firewire_ioctl(ifp, cmd, data); 478 splx(s); 479 return (error); 480#if defined(__DragonFly__) || __FreeBSD_version < 500000 481 default: 482 return (EINVAL); 483#endif 484 } 485 486 return (0); 487} 488 489static void 490fwip_post_busreset(void *arg) 491{ 492 struct fwip_softc *fwip = arg; 493 struct crom_src *src; 494 struct crom_chunk *root; 495 496 src = fwip->fd.fc->crom_src; 497 root = fwip->fd.fc->crom_root; 498 499 /* RFC2734 IPv4 over IEEE1394 */ 500 bzero(&fwip->unit4, sizeof(struct crom_chunk)); 501 crom_add_chunk(src, root, &fwip->unit4, CROM_UDIR); 502 crom_add_entry(&fwip->unit4, CSRKEY_SPEC, CSRVAL_IETF); 503 crom_add_simple_text(src, &fwip->unit4, &fwip->spec4, "IANA"); 504 crom_add_entry(&fwip->unit4, CSRKEY_VER, 1); 505 crom_add_simple_text(src, &fwip->unit4, &fwip->ver4, "IPv4"); 506 507 /* RFC3146 IPv6 over IEEE1394 */ 508 bzero(&fwip->unit6, sizeof(struct crom_chunk)); 509 crom_add_chunk(src, root, &fwip->unit6, CROM_UDIR); 510 crom_add_entry(&fwip->unit6, CSRKEY_SPEC, CSRVAL_IETF); 511 crom_add_simple_text(src, &fwip->unit6, &fwip->spec6, "IANA"); 512 crom_add_entry(&fwip->unit6, CSRKEY_VER, 2); 513 crom_add_simple_text(src, &fwip->unit6, &fwip->ver6, "IPv6"); 514 515 fwip->last_dest.hi = 0; 516 fwip->last_dest.lo = 0; 517 firewire_busreset(fwip->fw_softc.fwip_ifp); 518} 519 520static void 521fwip_output_callback(struct fw_xfer *xfer) 522{ 523 struct fwip_softc *fwip; 524 struct ifnet *ifp; 525 int s; 526 527 GIANT_REQUIRED; 528 529 fwip = (struct fwip_softc *)xfer->sc; 530 ifp = fwip->fw_softc.fwip_ifp; 531 /* XXX error check */ 532 FWIPDEBUG(ifp, "resp = %d\n", xfer->resp); 533 if (xfer->resp != 0) 534 ifp->if_oerrors ++; 535 536 m_freem(xfer->mbuf); 537 fw_xfer_unload(xfer); 538 539 s = splimp(); 540 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 541 splx(s); 542 543 /* for queue full */ 544 if (ifp->if_snd.ifq_head != NULL) 545 fwip_start(ifp); 546} 547 548static void 549fwip_start(struct ifnet *ifp) 550{ 551 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 552 int s; 553 554 GIANT_REQUIRED; 555 556 FWIPDEBUG(ifp, "starting\n"); 557 558 if (fwip->dma_ch < 0) { 559 struct mbuf *m = NULL; 560 561 FWIPDEBUG(ifp, "not ready\n"); 562 563 s = splimp(); 564 do { 565 IF_DEQUEUE(&ifp->if_snd, m); 566 if (m != NULL) 567 m_freem(m); 568 ifp->if_oerrors ++; 569 } while (m != NULL); 570 splx(s); 571 572 return; 573 } 574 575 s = splimp(); 576#if defined(__FreeBSD__) 577 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 578#else 579 ifp->if_flags |= IFF_OACTIVE; 580#endif 581 582 if (ifp->if_snd.ifq_len != 0) 583 fwip_async_output(fwip, ifp); 584 585#if defined(__FreeBSD__) 586 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 587#else 588 ifp->if_flags &= ~IFF_OACTIVE; 589#endif 590 splx(s); 591} 592 593/* Async. stream output */ 594static void 595fwip_async_output(struct fwip_softc *fwip, struct ifnet *ifp) 596{ 597 struct firewire_comm *fc = fwip->fd.fc; 598 struct mbuf *m; 599 struct m_tag *mtag; 600 struct fw_hwaddr *destfw; 601 struct fw_xfer *xfer; 602 struct fw_xferq *xferq; 603 struct fw_pkt *fp; 604 uint16_t nodeid; 605 int error; 606 int i = 0; 607 608 GIANT_REQUIRED; 609 610 xfer = NULL; 611 xferq = fwip->fd.fc->atq; 612 while (xferq->queued < xferq->maxq - 1) { 613 xfer = STAILQ_FIRST(&fwip->xferlist); 614 if (xfer == NULL) { 615 printf("if_fwip: lack of xfer\n"); 616 return; 617 } 618 IF_DEQUEUE(&ifp->if_snd, m); 619 if (m == NULL) 620 break; 621 622 /* 623 * Dig out the link-level address which 624 * firewire_output got via arp or neighbour 625 * discovery. If we don't have a link-level address, 626 * just stick the thing on the broadcast channel. 627 */ 628 mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, 0); 629 if (mtag == NULL) 630 destfw = 0; 631 else 632 destfw = (struct fw_hwaddr *) (mtag + 1); 633 634 STAILQ_REMOVE_HEAD(&fwip->xferlist, link); 635 636 /* 637 * We don't do any bpf stuff here - the generic code 638 * in firewire_output gives the packet to bpf before 639 * it adds the link-level encapsulation. 640 */ 641 642 /* 643 * Put the mbuf in the xfer early in case we hit an 644 * error case below - fwip_output_callback will free 645 * the mbuf. 646 */ 647 xfer->mbuf = m; 648 649 /* 650 * We use the arp result (if any) to add a suitable firewire 651 * packet header before handing off to the bus. 652 */ 653 fp = &xfer->send.hdr; 654 nodeid = FWLOCALBUS | fc->nodeid; 655 if ((m->m_flags & M_BCAST) || !destfw) { 656 /* 657 * Broadcast packets are sent as GASP packets with 658 * specifier ID 0x00005e, version 1 on the broadcast 659 * channel. To be conservative, we send at the 660 * slowest possible speed. 661 */ 662 uint32_t *p; 663 664 M_PREPEND(m, 2*sizeof(uint32_t), M_DONTWAIT); 665 p = mtod(m, uint32_t *); 666 fp->mode.stream.len = m->m_pkthdr.len; 667 fp->mode.stream.chtag = broadcast_channel; 668 fp->mode.stream.tcode = FWTCODE_STREAM; 669 fp->mode.stream.sy = 0; 670 xfer->send.spd = 0; 671 p[0] = htonl(nodeid << 16); 672 p[1] = htonl((0x5e << 24) | 1); 673 } else { 674 /* 675 * Unicast packets are sent as block writes to the 676 * target's unicast fifo address. If we can't 677 * find the node address, we just give up. We 678 * could broadcast it but that might overflow 679 * the packet size limitations due to the 680 * extra GASP header. Note: the hardware 681 * address is stored in network byte order to 682 * make life easier for ARP. 683 */ 684 struct fw_device *fd; 685 struct fw_eui64 eui; 686 687 eui.hi = ntohl(destfw->sender_unique_ID_hi); 688 eui.lo = ntohl(destfw->sender_unique_ID_lo); 689 if (fwip->last_dest.hi != eui.hi || 690 fwip->last_dest.lo != eui.lo) { 691 fd = fw_noderesolve_eui64(fc, &eui); 692 if (!fd) { 693 /* error */ 694 ifp->if_oerrors ++; 695 /* XXX set error code */ 696 fwip_output_callback(xfer); 697 continue; 698 699 } 700 fwip->last_hdr.mode.wreqb.dst = FWLOCALBUS | fd->dst; 701 fwip->last_hdr.mode.wreqb.tlrt = 0; 702 fwip->last_hdr.mode.wreqb.tcode = FWTCODE_WREQB; 703 fwip->last_hdr.mode.wreqb.pri = 0; 704 fwip->last_hdr.mode.wreqb.src = nodeid; 705 fwip->last_hdr.mode.wreqb.dest_hi = 706 ntohs(destfw->sender_unicast_FIFO_hi); 707 fwip->last_hdr.mode.wreqb.dest_lo = 708 ntohl(destfw->sender_unicast_FIFO_lo); 709 fwip->last_hdr.mode.wreqb.extcode = 0; 710 fwip->last_dest = eui; 711 } 712 713 fp->mode.wreqb = fwip->last_hdr.mode.wreqb; 714 fp->mode.wreqb.len = m->m_pkthdr.len; 715 xfer->send.spd = min(destfw->sspd, fc->speed); 716 } 717 718 xfer->send.pay_len = m->m_pkthdr.len; 719 720 error = fw_asyreq(fc, -1, xfer); 721 if (error == EAGAIN) { 722 /* 723 * We ran out of tlabels - requeue the packet 724 * for later transmission. 725 */ 726 xfer->mbuf = 0; 727 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 728 IF_PREPEND(&ifp->if_snd, m); 729 break; 730 } 731 if (error) { 732 /* error */ 733 ifp->if_oerrors ++; 734 /* XXX set error code */ 735 fwip_output_callback(xfer); 736 continue; 737 } else { 738 ifp->if_opackets ++; 739 i++; 740 } 741 } 742#if 0 743 if (i > 1) 744 printf("%d queued\n", i); 745#endif 746 if (i > 0) { 747#if 1 748 xferq->start(fc); 749#else 750 taskqueue_enqueue(taskqueue_swi_giant, &fwip->start_send); 751#endif 752 } 753} 754 755static void 756fwip_start_send (void *arg, int count) 757{ 758 struct fwip_softc *fwip = arg; 759 760 GIANT_REQUIRED; 761 fwip->fd.fc->atq->start(fwip->fd.fc); 762} 763 764/* Async. stream output */ 765static void 766fwip_stream_input(struct fw_xferq *xferq) 767{ 768 struct mbuf *m, *m0; 769 struct m_tag *mtag; 770 struct ifnet *ifp; 771 struct fwip_softc *fwip; 772 struct fw_bulkxfer *sxfer; 773 struct fw_pkt *fp; 774 uint16_t src; 775 uint32_t *p; 776 777 GIANT_REQUIRED; 778 779 fwip = (struct fwip_softc *)xferq->sc; 780 ifp = fwip->fw_softc.fwip_ifp; 781 782 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 783 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 784 fp = mtod(sxfer->mbuf, struct fw_pkt *); 785 if (fwip->fd.fc->irx_post != NULL) 786 fwip->fd.fc->irx_post(fwip->fd.fc, fp->mode.ld); 787 m = sxfer->mbuf; 788 789 /* insert new rbuf */ 790 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 791 if (m0 != NULL) { 792 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 793 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 794 } else 795 printf("fwip_as_input: m_getcl failed\n"); 796 797 /* 798 * We must have a GASP header - leave the 799 * encapsulation sanity checks to the generic 800 * code. Remeber that we also have the firewire async 801 * stream header even though that isn't accounted for 802 * in mode.stream.len. 803 */ 804 if (sxfer->resp != 0 || fp->mode.stream.len < 805 2*sizeof(uint32_t)) { 806 m_freem(m); 807 ifp->if_ierrors ++; 808 continue; 809 } 810 m->m_len = m->m_pkthdr.len = fp->mode.stream.len 811 + sizeof(fp->mode.stream); 812 813 /* 814 * If we received the packet on the broadcast channel, 815 * mark it as broadcast, otherwise we assume it must 816 * be multicast. 817 */ 818 if (fp->mode.stream.chtag == broadcast_channel) 819 m->m_flags |= M_BCAST; 820 else 821 m->m_flags |= M_MCAST; 822 823 /* 824 * Make sure we recognise the GASP specifier and 825 * version. 826 */ 827 p = mtod(m, uint32_t *); 828 if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 0x00005e 829 || (ntohl(p[2]) & 0xffffff) != 1) { 830 FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n", 831 ntohl(p[1]), ntohl(p[2])); 832 m_freem(m); 833 ifp->if_ierrors ++; 834 continue; 835 } 836 837 /* 838 * Record the sender ID for possible BPF usage. 839 */ 840 src = ntohl(p[1]) >> 16; 841 if (ifp->if_bpf) { 842 mtag = m_tag_alloc(MTAG_FIREWIRE, 843 MTAG_FIREWIRE_SENDER_EUID, 844 2*sizeof(uint32_t), M_NOWAIT); 845 if (mtag) { 846 /* bpf wants it in network byte order */ 847 struct fw_device *fd; 848 uint32_t *p = (uint32_t *) (mtag + 1); 849 fd = fw_noderesolve_nodeid(fwip->fd.fc, 850 src & 0x3f); 851 if (fd) { 852 p[0] = htonl(fd->eui.hi); 853 p[1] = htonl(fd->eui.lo); 854 } else { 855 p[0] = 0; 856 p[1] = 0; 857 } 858 m_tag_prepend(m, mtag); 859 } 860 } 861 862 /* 863 * Trim off the GASP header 864 */ 865 m_adj(m, 3*sizeof(uint32_t)); 866 m->m_pkthdr.rcvif = ifp; 867 firewire_input(ifp, m, src); 868 ifp->if_ipackets ++; 869 } 870 if (STAILQ_FIRST(&xferq->stfree) != NULL) 871 fwip->fd.fc->irx_enable(fwip->fd.fc, fwip->dma_ch); 872} 873 874static __inline void 875fwip_unicast_input_recycle(struct fwip_softc *fwip, struct fw_xfer *xfer) 876{ 877 struct mbuf *m; 878 879 GIANT_REQUIRED; 880 881 /* 882 * We have finished with a unicast xfer. Allocate a new 883 * cluster and stick it on the back of the input queue. 884 */ 885 m = m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 886 xfer->mbuf = m; 887 xfer->recv.payload = mtod(m, uint32_t *); 888 xfer->recv.pay_len = MCLBYTES; 889 xfer->mbuf = m; 890 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 891} 892 893static void 894fwip_unicast_input(struct fw_xfer *xfer) 895{ 896 uint64_t address; 897 struct mbuf *m; 898 struct m_tag *mtag; 899 struct ifnet *ifp; 900 struct fwip_softc *fwip; 901 struct fw_pkt *fp; 902 //struct fw_pkt *sfp; 903 int rtcode; 904 905 GIANT_REQUIRED; 906 907 fwip = (struct fwip_softc *)xfer->sc; 908 ifp = fwip->fw_softc.fwip_ifp; 909 m = xfer->mbuf; 910 xfer->mbuf = 0; 911 fp = &xfer->recv.hdr; 912 913 /* 914 * Check the fifo address - we only accept addresses of 915 * exactly INET_FIFO. 916 */ 917 address = ((uint64_t)fp->mode.wreqb.dest_hi << 32) 918 | fp->mode.wreqb.dest_lo; 919 if (fp->mode.wreqb.tcode != FWTCODE_WREQB) { 920 rtcode = FWRCODE_ER_TYPE; 921 } else if (address != INET_FIFO) { 922 rtcode = FWRCODE_ER_ADDR; 923 } else { 924 rtcode = FWRCODE_COMPLETE; 925 } 926 927 /* 928 * Pick up a new mbuf and stick it on the back of the receive 929 * queue. 930 */ 931 fwip_unicast_input_recycle(fwip, xfer); 932 933 /* 934 * If we've already rejected the packet, give up now. 935 */ 936 if (rtcode != FWRCODE_COMPLETE) { 937 m_freem(m); 938 ifp->if_ierrors ++; 939 return; 940 } 941 942 if (ifp->if_bpf) { 943 /* 944 * Record the sender ID for possible BPF usage. 945 */ 946 mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_SENDER_EUID, 947 2*sizeof(uint32_t), M_NOWAIT); 948 if (mtag) { 949 /* bpf wants it in network byte order */ 950 struct fw_device *fd; 951 uint32_t *p = (uint32_t *) (mtag + 1); 952 fd = fw_noderesolve_nodeid(fwip->fd.fc, 953 fp->mode.wreqb.src & 0x3f); 954 if (fd) { 955 p[0] = htonl(fd->eui.hi); 956 p[1] = htonl(fd->eui.lo); 957 } else { 958 p[0] = 0; 959 p[1] = 0; 960 } 961 m_tag_prepend(m, mtag); 962 } 963 } 964 965 /* 966 * Hand off to the generic encapsulation code. We don't use 967 * ifp->if_input so that we can pass the source nodeid as an 968 * argument to facilitate link-level fragment reassembly. 969 */ 970 m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len; 971 m->m_pkthdr.rcvif = ifp; 972 firewire_input(ifp, m, fp->mode.wreqb.src); 973 ifp->if_ipackets ++; 974} 975 976static devclass_t fwip_devclass; 977 978static device_method_t fwip_methods[] = { 979 /* device interface */ 980 DEVMETHOD(device_identify, fwip_identify), 981 DEVMETHOD(device_probe, fwip_probe), 982 DEVMETHOD(device_attach, fwip_attach), 983 DEVMETHOD(device_detach, fwip_detach), 984 { 0, 0 } 985}; 986 987static driver_t fwip_driver = { 988 "fwip", 989 fwip_methods, 990 sizeof(struct fwip_softc), 991}; 992 993 994#ifdef __DragonFly__ 995DECLARE_DUMMY_MODULE(fwip); 996#endif 997DRIVER_MODULE(fwip, firewire, fwip_driver, fwip_devclass, 0, 0); 998MODULE_VERSION(fwip, 1); 999MODULE_DEPEND(fwip, firewire, 1, 1, 1); 1000