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sys/dev/ic/pdq_ifsubr.c
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1 /* $NetBSD: pdq_ifsubr.c,v 1.47 2006/11/16 01:32:52 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com> 5 * 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. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * Id: pdq_ifsubr.c,v 1.12 1997/06/05 01:56:35 thomas Exp 27 * 28 */ 29 30 /* 31 * DEC PDQ FDDI Controller; code for BSD derived operating systems 32 * 33 * This module provide bus independent BSD specific O/S functions. 34 * (ie. it provides an ifnet interface to the rest of the system) 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: pdq_ifsubr.c,v 1.47 2006/11/16 01:32:52 christos Exp $"); 39 40 #ifdef __NetBSD__ 41 #include "opt_inet.h" 42 #endif 43 44 #include <sys/param.h> 45 #include <sys/kernel.h> 46 #include <sys/mbuf.h> 47 #include <sys/protosw.h> 48 #include <sys/socket.h> 49 #include <sys/ioctl.h> 50 #include <sys/errno.h> 51 #include <sys/malloc.h> 52 #if defined(__FreeBSD__) && BSD < 199401 53 #include <sys/devconf.h> 54 #elif defined(__bsdi__) || defined(__NetBSD__) 55 #include <sys/device.h> 56 #endif 57 58 #include <net/if.h> 59 #include <net/if_types.h> 60 #include <net/if_dl.h> 61 #if !defined(__NetBSD__) 62 #include <net/route.h> 63 #endif 64 65 #include "bpfilter.h" 66 #if NBPFILTER > 0 67 #include <net/bpf.h> 68 #include <net/bpfdesc.h> 69 #endif 70 71 #ifdef INET 72 #include <netinet/in.h> 73 #include <netinet/in_systm.h> 74 #include <netinet/in_var.h> 75 #include <netinet/ip.h> 76 #if defined(__NetBSD__) 77 #include <netinet/if_inarp.h> 78 #endif 79 #endif 80 #if defined(__FreeBSD__) 81 #include <netinet/if_ether.h> 82 #include <netinet/if_fddi.h> 83 #else 84 #include <net/if_fddi.h> 85 #endif 86 87 #if defined(__bsdi__) 88 #include <netinet/if_ether.h> 89 #include <i386/isa/isavar.h> 90 #endif 91 92 93 #ifndef __NetBSD__ 94 #include <vm/vm.h> 95 #endif 96 97 #if defined(__FreeBSD__) 98 /* 99 * Yet another specific ifdef for FreeBSD as it diverges... 100 */ 101 #include <dev/pdq/pdqvar.h> 102 #include <dev/pdq/pdqreg.h> 103 #else 104 #include "pdqvar.h" 105 #include "pdqreg.h" 106 #endif 107 108 #if defined(__bsdi__) && _BSDI_VERSION < 199506 /* XXX */ 109 static void 110 arp_ifinit( 111 struct arpcom *ac, 112 struct ifaddr *ifa) 113 { 114 sc->sc_ac.ac_ipaddr = IA_SIN(ifa)->sin_addr; 115 arpwhohas(&sc->sc_ac, &IA_SIN(ifa)->sin_addr); 116 #if _BSDI_VERSION >= 199401 117 ifa->ifa_rtrequest = arp_rtrequest; 118 ifa->ifa_flags |= RTF_CLONING; 119 #endif 120 #endif 121 122 123 void 124 pdq_ifinit( 125 pdq_softc_t *sc) 126 { 127 if (sc->sc_if.if_flags & IFF_UP) { 128 sc->sc_if.if_flags |= IFF_RUNNING; 129 #if NBPFILTER > 0 130 if (sc->sc_if.if_flags & IFF_PROMISC) { 131 sc->sc_pdq->pdq_flags |= PDQ_PROMISC; 132 } else { 133 sc->sc_pdq->pdq_flags &= ~PDQ_PROMISC; 134 } 135 #endif 136 if (sc->sc_if.if_flags & IFF_LINK1) { 137 sc->sc_pdq->pdq_flags |= PDQ_PASS_SMT; 138 } else { 139 sc->sc_pdq->pdq_flags &= ~PDQ_PASS_SMT; 140 } 141 sc->sc_pdq->pdq_flags |= PDQ_RUNNING; 142 pdq_run(sc->sc_pdq); 143 } else { 144 sc->sc_if.if_flags &= ~IFF_RUNNING; 145 sc->sc_pdq->pdq_flags &= ~PDQ_RUNNING; 146 pdq_stop(sc->sc_pdq); 147 } 148 } 149 150 void 151 pdq_ifwatchdog( 152 struct ifnet *ifp) 153 { 154 /* 155 * No progress was made on the transmit queue for PDQ_OS_TX_TRANSMIT 156 * seconds. Remove all queued packets. 157 */ 158 159 ifp->if_flags &= ~IFF_OACTIVE; 160 ifp->if_timer = 0; 161 for (;;) { 162 struct mbuf *m; 163 IFQ_DEQUEUE(&ifp->if_snd, m); 164 if (m == NULL) 165 return; 166 PDQ_OS_DATABUF_FREE(PDQ_OS_IFP_TO_SOFTC(ifp)->sc_pdq, m); 167 } 168 } 169 170 ifnet_ret_t 171 pdq_ifstart( 172 struct ifnet *ifp) 173 { 174 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp); 175 struct mbuf *m; 176 int tx = 0; 177 178 if ((ifp->if_flags & IFF_RUNNING) == 0) 179 return; 180 181 if (sc->sc_if.if_timer == 0) 182 sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT; 183 184 if ((sc->sc_pdq->pdq_flags & PDQ_TXOK) == 0) { 185 sc->sc_if.if_flags |= IFF_OACTIVE; 186 return; 187 } 188 sc->sc_flags |= PDQIF_DOWNCALL; 189 for (;; tx = 1) { 190 IFQ_POLL(&ifp->if_snd, m); 191 if (m == NULL) 192 break; 193 #if defined(PDQ_BUS_DMA) && !defined(PDQ_BUS_DMA_NOTX) 194 if ((m->m_flags & M_HASTXDMAMAP) == 0) { 195 bus_dmamap_t map; 196 if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) { 197 m->m_data[0] = PDQ_FDDI_PH0; 198 m->m_data[1] = PDQ_FDDI_PH1; 199 m->m_data[2] = PDQ_FDDI_PH2; 200 } 201 if (!bus_dmamap_create(sc->sc_dmatag, m->m_pkthdr.len, 255, 202 m->m_pkthdr.len, 0, BUS_DMA_NOWAIT, &map)) { 203 if (!bus_dmamap_load_mbuf(sc->sc_dmatag, map, m, 204 BUS_DMA_WRITE|BUS_DMA_NOWAIT)) { 205 bus_dmamap_sync(sc->sc_dmatag, map, 0, m->m_pkthdr.len, 206 BUS_DMASYNC_PREWRITE); 207 M_SETCTX(m, map); 208 m->m_flags |= M_HASTXDMAMAP; 209 } 210 } 211 if ((m->m_flags & M_HASTXDMAMAP) == 0) 212 break; 213 } 214 #else 215 if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) { 216 m->m_data[0] = PDQ_FDDI_PH0; 217 m->m_data[1] = PDQ_FDDI_PH1; 218 m->m_data[2] = PDQ_FDDI_PH2; 219 } 220 #endif 221 222 if (pdq_queue_transmit_data(sc->sc_pdq, m) == PDQ_FALSE) 223 break; 224 IFQ_DEQUEUE(&ifp->if_snd, m); 225 } 226 if (m != NULL) 227 ifp->if_flags |= IFF_OACTIVE; 228 if (tx) 229 PDQ_DO_TYPE2_PRODUCER(sc->sc_pdq); 230 sc->sc_flags &= ~PDQIF_DOWNCALL; 231 } 232 233 void 234 pdq_os_receive_pdu( 235 pdq_t *pdq, 236 struct mbuf *m, 237 size_t pktlen, 238 int drop) 239 { 240 pdq_softc_t *sc = pdq->pdq_os_ctx; 241 struct fddi_header *fh; 242 243 sc->sc_if.if_ipackets++; 244 #if defined(PDQ_BUS_DMA) 245 { 246 /* 247 * Even though the first mbuf start at the first fddi header octet, 248 * the dmamap starts PDQ_OS_HDR_OFFSET octets earlier. Any additional 249 * mbufs will start normally. 250 */ 251 int offset = PDQ_OS_HDR_OFFSET; 252 struct mbuf *m0; 253 for (m0 = m; m0 != NULL; m0 = m0->m_next, offset = 0) { 254 pdq_os_databuf_sync(sc, m0, offset, m0->m_len, BUS_DMASYNC_POSTREAD); 255 bus_dmamap_unload(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t)); 256 bus_dmamap_destroy(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t)); 257 m0->m_flags &= ~M_HASRXDMAMAP; 258 M_SETCTX(m0, NULL); 259 } 260 } 261 #endif 262 m->m_pkthdr.len = pktlen; 263 #if NBPFILTER > 0 264 if (sc->sc_bpf != NULL) 265 PDQ_BPF_MTAP(sc, m); 266 #endif 267 fh = mtod(m, struct fddi_header *); 268 if (drop || (fh->fddi_fc & (FDDIFC_L|FDDIFC_F)) != FDDIFC_LLC_ASYNC) { 269 PDQ_OS_DATABUF_FREE(pdq, m); 270 return; 271 } 272 273 m->m_pkthdr.rcvif = &sc->sc_if; 274 (*sc->sc_if.if_input)(&sc->sc_if, m); 275 } 276 277 void 278 pdq_os_restart_transmitter( 279 pdq_t *pdq) 280 { 281 pdq_softc_t *sc = pdq->pdq_os_ctx; 282 sc->sc_if.if_flags &= ~IFF_OACTIVE; 283 if (IFQ_IS_EMPTY(&sc->sc_if.if_snd) == 0) { 284 sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT; 285 if ((sc->sc_flags & PDQIF_DOWNCALL) == 0) 286 pdq_ifstart(&sc->sc_if); 287 } else { 288 sc->sc_if.if_timer = 0; 289 } 290 } 291 292 void 293 pdq_os_transmit_done( 294 pdq_t *pdq, 295 struct mbuf *m) 296 { 297 pdq_softc_t *sc = pdq->pdq_os_ctx; 298 #if NBPFILTER > 0 299 if (sc->sc_bpf != NULL) 300 PDQ_BPF_MTAP(sc, m); 301 #endif 302 PDQ_OS_DATABUF_FREE(pdq, m); 303 sc->sc_if.if_opackets++; 304 } 305 306 void 307 pdq_os_addr_fill( 308 pdq_t *pdq, 309 pdq_lanaddr_t *addr, 310 size_t num_addrs) 311 { 312 pdq_softc_t *sc = pdq->pdq_os_ctx; 313 struct ether_multistep step; 314 struct ether_multi *enm; 315 316 /* 317 * ADDR_FILTER_SET is always issued before FILTER_SET so 318 * we can play with PDQ_ALLMULTI and not worry about 319 * queueing a FILTER_SET ourselves. 320 */ 321 322 pdq->pdq_flags &= ~PDQ_ALLMULTI; 323 #if defined(IFF_ALLMULTI) 324 sc->sc_if.if_flags &= ~IFF_ALLMULTI; 325 #endif 326 327 ETHER_FIRST_MULTI(step, PDQ_FDDICOM(sc), enm); 328 while (enm != NULL && num_addrs > 0) { 329 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6) == 0) { 330 ((u_short *) addr->lanaddr_bytes)[0] = ((u_short *) enm->enm_addrlo)[0]; 331 ((u_short *) addr->lanaddr_bytes)[1] = ((u_short *) enm->enm_addrlo)[1]; 332 ((u_short *) addr->lanaddr_bytes)[2] = ((u_short *) enm->enm_addrlo)[2]; 333 addr++; 334 num_addrs--; 335 } else { 336 pdq->pdq_flags |= PDQ_ALLMULTI; 337 #if defined(IFF_ALLMULTI) 338 sc->sc_if.if_flags |= IFF_ALLMULTI; 339 #endif 340 } 341 ETHER_NEXT_MULTI(step, enm); 342 } 343 /* 344 * If not all the address fit into the CAM, turn on all-multicast mode. 345 */ 346 if (enm != NULL) { 347 pdq->pdq_flags |= PDQ_ALLMULTI; 348 #if defined(IFF_ALLMULTI) 349 sc->sc_if.if_flags |= IFF_ALLMULTI; 350 #endif 351 } 352 } 353 354 #if defined(IFM_FDDI) 355 static int 356 pdq_ifmedia_change( 357 struct ifnet *ifp) 358 { 359 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp); 360 361 if (sc->sc_ifmedia.ifm_media & IFM_FDX) { 362 if ((sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) == 0) { 363 sc->sc_pdq->pdq_flags |= PDQ_WANT_FDX; 364 if (sc->sc_pdq->pdq_flags & PDQ_RUNNING) 365 pdq_run(sc->sc_pdq); 366 } 367 } else if (sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) { 368 sc->sc_pdq->pdq_flags &= ~PDQ_WANT_FDX; 369 if (sc->sc_pdq->pdq_flags & PDQ_RUNNING) 370 pdq_run(sc->sc_pdq); 371 } 372 373 return 0; 374 } 375 376 static void 377 pdq_ifmedia_status( 378 struct ifnet *ifp, 379 struct ifmediareq *ifmr) 380 { 381 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp); 382 383 ifmr->ifm_status = IFM_AVALID; 384 if (sc->sc_pdq->pdq_flags & PDQ_IS_ONRING) 385 ifmr->ifm_status |= IFM_ACTIVE; 386 387 ifmr->ifm_active = (ifmr->ifm_current & ~IFM_FDX); 388 if (sc->sc_pdq->pdq_flags & PDQ_IS_FDX) 389 ifmr->ifm_active |= IFM_FDX; 390 } 391 392 void 393 pdq_os_update_status( 394 pdq_t *pdq, 395 const void *arg) 396 { 397 pdq_softc_t * const sc = pdq->pdq_os_ctx; 398 const pdq_response_status_chars_get_t *rsp = arg; 399 int media = 0; 400 401 switch (rsp->status_chars_get.pmd_type[0]) { 402 case PDQ_PMD_TYPE_ANSI_MUTLI_MODE: media = IFM_FDDI_MMF; break; 403 case PDQ_PMD_TYPE_ANSI_SINGLE_MODE_TYPE_1: media = IFM_FDDI_SMF; break; 404 case PDQ_PMD_TYPE_ANSI_SIGNLE_MODE_TYPE_2: media = IFM_FDDI_SMF; break; 405 case PDQ_PMD_TYPE_UNSHIELDED_TWISTED_PAIR: media = IFM_FDDI_UTP; break; 406 default: media |= IFM_MANUAL; 407 } 408 409 if (rsp->status_chars_get.station_type == PDQ_STATION_TYPE_DAS) 410 media |= IFM_FDDI_DA; 411 412 sc->sc_ifmedia.ifm_media = media | IFM_FDDI; 413 } 414 #endif /* defined(IFM_FDDI) */ 415 416 int 417 pdq_ifioctl( 418 struct ifnet *ifp, 419 ioctl_cmd_t cmd, 420 caddr_t data) 421 { 422 pdq_softc_t *sc = PDQ_OS_IFP_TO_SOFTC(ifp); 423 int s, error = 0; 424 425 s = PDQ_OS_SPL_RAISE(); 426 427 switch (cmd) { 428 case SIOCSIFADDR: { 429 struct ifaddr *ifa = (struct ifaddr *)data; 430 431 ifp->if_flags |= IFF_UP; 432 switch(ifa->ifa_addr->sa_family) { 433 #if defined(INET) 434 case AF_INET: { 435 pdq_ifinit(sc); 436 PDQ_ARP_IFINIT(sc, ifa); 437 break; 438 } 439 #endif /* INET */ 440 441 442 default: { 443 pdq_ifinit(sc); 444 break; 445 } 446 } 447 break; 448 } 449 case SIOCGIFADDR: { 450 struct ifreq *ifr = (struct ifreq *)data; 451 memcpy((caddr_t) ((struct sockaddr *)&ifr->ifr_data)->sa_data, 452 (caddr_t) PDQ_LANADDR(sc), 6); 453 break; 454 } 455 456 case SIOCSIFFLAGS: { 457 pdq_ifinit(sc); 458 break; 459 } 460 461 case SIOCADDMULTI: 462 case SIOCDELMULTI: { 463 /* 464 * Update multicast listeners 465 */ 466 if (cmd == SIOCADDMULTI) 467 error = ether_addmulti((struct ifreq *)data, PDQ_FDDICOM(sc)); 468 else 469 error = ether_delmulti((struct ifreq *)data, PDQ_FDDICOM(sc)); 470 471 if (error == ENETRESET) { 472 if (sc->sc_if.if_flags & IFF_RUNNING) 473 pdq_run(sc->sc_pdq); 474 error = 0; 475 } 476 break; 477 } 478 479 #if defined(SIOCSIFMTU) 480 #if !defined(ifr_mtu) 481 #define ifr_mtu ifr_metric 482 #endif 483 case SIOCSIFMTU: { 484 struct ifreq *ifr = (struct ifreq *)data; 485 /* 486 * Set the interface MTU. 487 */ 488 if (ifr->ifr_mtu > FDDIMTU) { 489 error = EINVAL; 490 break; 491 } 492 ifp->if_mtu = ifr->ifr_mtu; 493 break; 494 } 495 #endif /* SIOCSIFMTU */ 496 497 #if defined(IFM_FDDI) && defined(SIOCSIFMEDIA) 498 case SIOCSIFMEDIA: 499 case SIOCGIFMEDIA: { 500 struct ifreq *ifr = (struct ifreq *)data; 501 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd); 502 break; 503 } 504 #endif 505 506 default: { 507 error = EINVAL; 508 break; 509 } 510 } 511 512 PDQ_OS_SPL_LOWER(s); 513 return error; 514 } 515 516 #ifndef IFF_NOTRAILERS 517 #define IFF_NOTRAILERS 0 518 #endif 519 520 void 521 pdq_ifattach( 522 pdq_softc_t *sc, 523 ifnet_ret_t (*ifwatchdog)(int unit)) 524 { 525 struct ifnet *ifp = &sc->sc_if; 526 527 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST; 528 529 #if (defined(__FreeBSD__) && BSD >= 199506) || defined(__NetBSD__) 530 ifp->if_watchdog = pdq_ifwatchdog; 531 #else 532 ifp->if_watchdog = ifwatchdog; 533 #endif 534 535 ifp->if_ioctl = pdq_ifioctl; 536 #if !defined(__NetBSD__) 537 ifp->if_output = fddi_output; 538 #endif 539 ifp->if_start = pdq_ifstart; 540 IFQ_SET_READY(&ifp->if_snd); 541 542 #if defined(IFM_FDDI) 543 { 544 const int media = sc->sc_ifmedia.ifm_media; 545 ifmedia_init(&sc->sc_ifmedia, IFM_FDX, 546 pdq_ifmedia_change, pdq_ifmedia_status); 547 ifmedia_add(&sc->sc_ifmedia, media, 0, 0); 548 ifmedia_set(&sc->sc_ifmedia, media); 549 } 550 #endif 551 552 if_attach(ifp); 553 #if defined(__NetBSD__) 554 fddi_ifattach(ifp, (caddr_t)&sc->sc_pdq->pdq_hwaddr); 555 #else 556 fddi_ifattach(ifp); 557 #endif 558 } 559 560 #if defined(PDQ_BUS_DMA) 561 int 562 pdq_os_memalloc_contig( 563 pdq_t *pdq) 564 { 565 pdq_softc_t * const sc = pdq->pdq_os_ctx; 566 bus_dma_segment_t db_segs[1], ui_segs[1], cb_segs[1]; 567 int db_nsegs = 0, ui_nsegs = 0; 568 int steps = 0; 569 int not_ok; 570 571 not_ok = bus_dmamem_alloc(sc->sc_dmatag, 572 sizeof(*pdq->pdq_dbp), sizeof(*pdq->pdq_dbp), 573 sizeof(*pdq->pdq_dbp), db_segs, 1, &db_nsegs, 574 #if defined(__sparc__) || defined(__sparc64__) 575 BUS_DMA_NOWAIT | BUS_DMA_COHERENT); 576 #else 577 BUS_DMA_NOWAIT); 578 #endif 579 if (!not_ok) { 580 steps = 1; 581 not_ok = bus_dmamem_map(sc->sc_dmatag, db_segs, db_nsegs, 582 sizeof(*pdq->pdq_dbp), (caddr_t *) &pdq->pdq_dbp, 583 BUS_DMA_NOWAIT); 584 } 585 if (!not_ok) { 586 steps = 2; 587 not_ok = bus_dmamap_create(sc->sc_dmatag, db_segs[0].ds_len, 1, 588 0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_dbmap); 589 } 590 if (!not_ok) { 591 steps = 3; 592 not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_dbmap, 593 pdq->pdq_dbp, sizeof(*pdq->pdq_dbp), 594 NULL, BUS_DMA_NOWAIT); 595 } 596 if (!not_ok) { 597 steps = 4; 598 pdq->pdq_pa_descriptor_block = sc->sc_dbmap->dm_segs[0].ds_addr; 599 not_ok = bus_dmamem_alloc(sc->sc_dmatag, 600 PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE, 601 ui_segs, 1, &ui_nsegs, BUS_DMA_NOWAIT); 602 } 603 if (!not_ok) { 604 steps = 5; 605 not_ok = bus_dmamem_map(sc->sc_dmatag, ui_segs, ui_nsegs, 606 PDQ_OS_PAGESIZE, 607 (caddr_t *) &pdq->pdq_unsolicited_info.ui_events, 608 BUS_DMA_NOWAIT); 609 } 610 if (!not_ok) { 611 steps = 6; 612 not_ok = bus_dmamap_create(sc->sc_dmatag, ui_segs[0].ds_len, 1, 613 PDQ_OS_PAGESIZE, 0, BUS_DMA_NOWAIT, 614 &sc->sc_uimap); 615 } 616 if (!not_ok) { 617 steps = 7; 618 not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_uimap, 619 pdq->pdq_unsolicited_info.ui_events, 620 PDQ_OS_PAGESIZE, NULL, BUS_DMA_NOWAIT); 621 } 622 if (!not_ok) { 623 steps = 8; 624 pdq->pdq_unsolicited_info.ui_pa_bufstart = sc->sc_uimap->dm_segs[0].ds_addr; 625 cb_segs[0] = db_segs[0]; 626 cb_segs[0].ds_addr += offsetof(pdq_descriptor_block_t, pdqdb_consumer); 627 cb_segs[0].ds_len = sizeof(pdq_consumer_block_t); 628 #if defined(__sparc__) || defined(__sparc64__) 629 pdq->pdq_cbp = (pdq_consumer_block_t*)((unsigned long int)pdq->pdq_dbp + 630 (unsigned long int)offsetof(pdq_descriptor_block_t,pdqdb_consumer)); 631 #else 632 not_ok = bus_dmamem_map(sc->sc_dmatag, cb_segs, 1, 633 sizeof(*pdq->pdq_cbp), 634 (caddr_t *)&pdq->pdq_cbp, 635 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 636 #endif 637 } 638 if (!not_ok) { 639 steps = 9; 640 not_ok = bus_dmamap_create(sc->sc_dmatag, cb_segs[0].ds_len, 1, 641 0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_cbmap); 642 } 643 if (!not_ok) { 644 steps = 10; 645 not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_cbmap, 646 pdq->pdq_cbp, sizeof(*pdq->pdq_cbp), 647 NULL, BUS_DMA_NOWAIT); 648 } 649 if (!not_ok) { 650 pdq->pdq_pa_consumer_block = sc->sc_cbmap->dm_segs[0].ds_addr; 651 return not_ok; 652 } 653 654 switch (steps) { 655 case 11: { 656 bus_dmamap_unload(sc->sc_dmatag, sc->sc_cbmap); 657 /* FALL THROUGH */ 658 } 659 case 10: { 660 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_cbmap); 661 /* FALL THROUGH */ 662 } 663 case 9: { 664 bus_dmamem_unmap(sc->sc_dmatag, 665 (caddr_t)pdq->pdq_cbp, sizeof(*pdq->pdq_cbp)); 666 /* FALL THROUGH */ 667 } 668 case 8: { 669 bus_dmamap_unload(sc->sc_dmatag, sc->sc_uimap); 670 /* FALL THROUGH */ 671 } 672 case 7: { 673 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_uimap); 674 /* FALL THROUGH */ 675 } 676 case 6: { 677 bus_dmamem_unmap(sc->sc_dmatag, 678 (caddr_t) pdq->pdq_unsolicited_info.ui_events, 679 PDQ_OS_PAGESIZE); 680 /* FALL THROUGH */ 681 } 682 case 5: { 683 bus_dmamem_free(sc->sc_dmatag, ui_segs, ui_nsegs); 684 /* FALL THROUGH */ 685 } 686 case 4: { 687 bus_dmamap_unload(sc->sc_dmatag, sc->sc_dbmap); 688 /* FALL THROUGH */ 689 } 690 case 3: { 691 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_dbmap); 692 /* FALL THROUGH */ 693 } 694 case 2: { 695 bus_dmamem_unmap(sc->sc_dmatag, 696 (caddr_t) pdq->pdq_dbp, 697 sizeof(*pdq->pdq_dbp)); 698 /* FALL THROUGH */ 699 } 700 case 1: { 701 bus_dmamem_free(sc->sc_dmatag, db_segs, db_nsegs); 702 /* FALL THROUGH */ 703 } 704 } 705 706 return not_ok; 707 } 708 709 extern void 710 pdq_os_descriptor_block_sync( 711 pdq_os_ctx_t *sc, 712 size_t offset, 713 size_t length, 714 int ops) 715 { 716 bus_dmamap_sync(sc->sc_dmatag, sc->sc_dbmap, offset, length, ops); 717 } 718 719 extern void 720 pdq_os_consumer_block_sync( 721 pdq_os_ctx_t *sc, 722 int ops) 723 { 724 bus_dmamap_sync(sc->sc_dmatag, sc->sc_cbmap, 0, sizeof(pdq_consumer_block_t), ops); 725 } 726 727 extern void 728 pdq_os_unsolicited_event_sync( 729 pdq_os_ctx_t *sc, 730 size_t offset, 731 size_t length, 732 int ops) 733 { 734 bus_dmamap_sync(sc->sc_dmatag, sc->sc_uimap, offset, length, ops); 735 } 736 737 extern void 738 pdq_os_databuf_sync( 739 pdq_os_ctx_t *sc, 740 struct mbuf *m, 741 size_t offset, 742 size_t length, 743 int ops) 744 { 745 bus_dmamap_sync(sc->sc_dmatag, M_GETCTX(m, bus_dmamap_t), offset, length, ops); 746 } 747 748 extern void 749 pdq_os_databuf_free( 750 pdq_os_ctx_t *sc, 751 struct mbuf *m) 752 { 753 if (m->m_flags & (M_HASRXDMAMAP|M_HASTXDMAMAP)) { 754 bus_dmamap_t map = M_GETCTX(m, bus_dmamap_t); 755 bus_dmamap_unload(sc->sc_dmatag, map); 756 bus_dmamap_destroy(sc->sc_dmatag, map); 757 m->m_flags &= ~(M_HASRXDMAMAP|M_HASTXDMAMAP); 758 } 759 m_freem(m); 760 } 761 762 extern struct mbuf * 763 pdq_os_databuf_alloc( 764 pdq_os_ctx_t *sc) 765 { 766 struct mbuf *m; 767 bus_dmamap_t map; 768 769 MGETHDR(m, M_DONTWAIT, MT_DATA); 770 if (m == NULL) { 771 printf("%s: can't alloc small buf\n", sc->sc_dev.dv_xname); 772 return NULL; 773 } 774 MCLGET(m, M_DONTWAIT); 775 if ((m->m_flags & M_EXT) == 0) { 776 printf("%s: can't alloc cluster\n", sc->sc_dev.dv_xname); 777 m_free(m); 778 return NULL; 779 } 780 MCLAIM(m, &PDQ_FDDICOM(sc)->ec_rx_mowner); 781 m->m_pkthdr.len = m->m_len = PDQ_OS_DATABUF_SIZE; 782 783 if (bus_dmamap_create(sc->sc_dmatag, PDQ_OS_DATABUF_SIZE, 784 1, PDQ_OS_DATABUF_SIZE, 0, BUS_DMA_NOWAIT, &map)) { 785 printf("%s: can't create dmamap\n", sc->sc_dev.dv_xname); 786 m_free(m); 787 return NULL; 788 } 789 if (bus_dmamap_load_mbuf(sc->sc_dmatag, map, m, 790 BUS_DMA_READ|BUS_DMA_NOWAIT)) { 791 printf("%s: can't load dmamap\n", sc->sc_dev.dv_xname); 792 bus_dmamap_destroy(sc->sc_dmatag, map); 793 m_free(m); 794 return NULL; 795 } 796 m->m_flags |= M_HASRXDMAMAP; 797 M_SETCTX(m, map); 798 return m; 799 } 800 #endif
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