1 /* $NetBSD: pdq_ifsubr.c,v 1.38 2001/12/21 23:21:47 matt Exp $ */
4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6 * Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * $NetBSD: pdq_ifsubr.c,v 1.12 1997/06/05 01:56:35 thomas Exp$
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
35 * DEC PDQ FDDI Controller; code for BSD derived operating systems
37 * This module provide bus independent BSD specific O/S functions.
38 * (ie. it provides an ifnet interface to the rest of the system)
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/kernel.h>
48 #include <sys/mutex.h>
49 #include <sys/malloc.h>
50 #include <sys/socket.h>
51 #include <sys/sockio.h>
53 #include <sys/module.h>
56 #include <machine/bus.h>
57 #include <machine/resource.h>
61 #include <net/if_var.h>
62 #include <net/if_arp.h>
63 #include <net/if_dl.h>
64 #include <net/if_media.h>
65 #include <net/if_types.h>
70 #include <dev/pdq/pdq_freebsd.h>
71 #include <dev/pdq/pdqreg.h>
73 devclass_t pdq_devclass;
75 static void pdq_watchdog(void *);
78 pdq_ifstop(pdq_softc_t *sc)
81 PDQ_IFNET(sc)->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
82 sc->sc_pdq->pdq_flags &= ~PDQ_RUNNING;
84 callout_stop(&sc->watchdog);
88 pdq_ifinit_locked(pdq_softc_t *sc)
92 if (PDQ_IFNET(sc)->if_flags & IFF_UP) {
93 PDQ_IFNET(sc)->if_drv_flags |= IFF_DRV_RUNNING;
94 if (PDQ_IFNET(sc)->if_flags & IFF_PROMISC) {
95 sc->sc_pdq->pdq_flags |= PDQ_PROMISC;
97 sc->sc_pdq->pdq_flags &= ~PDQ_PROMISC;
99 if (PDQ_IFNET(sc)->if_flags & IFF_LINK1) {
100 sc->sc_pdq->pdq_flags |= PDQ_PASS_SMT;
102 sc->sc_pdq->pdq_flags &= ~PDQ_PASS_SMT;
104 sc->sc_pdq->pdq_flags |= PDQ_RUNNING;
106 callout_reset(&sc->watchdog, hz, pdq_watchdog, sc);
112 pdq_ifinit(void *arg)
118 pdq_ifinit_locked(sc);
123 pdq_watchdog(void *arg)
130 callout_reset(&sc->watchdog, hz, pdq_watchdog, sc);
131 if (sc->timer == 0 || --sc->timer > 0)
135 * No progress was made on the transmit queue for PDQ_OS_TX_TRANSMIT
136 * seconds. Remove all queued packets.
139 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
142 IFQ_DEQUEUE(&ifp->if_snd, m);
145 PDQ_OS_DATABUF_FREE(PDQ_OS_IFP_TO_SOFTC(ifp)->sc_pdq, m);
150 pdq_ifstart_locked(struct ifnet *ifp)
152 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
157 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
161 sc->timer = PDQ_OS_TX_TIMEOUT;
163 if ((sc->sc_pdq->pdq_flags & PDQ_TXOK) == 0) {
164 PDQ_IFNET(sc)->if_drv_flags |= IFF_DRV_OACTIVE;
167 sc->sc_flags |= PDQIF_DOWNCALL;
169 IF_DEQUEUE(&ifp->if_snd, m);
172 #if defined(PDQ_BUS_DMA) && !defined(PDQ_BUS_DMA_NOTX)
173 if ((m->m_flags & M_HASTXDMAMAP) == 0) {
175 if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) {
176 m->m_data[0] = PDQ_FDDI_PH0;
177 m->m_data[1] = PDQ_FDDI_PH1;
178 m->m_data[2] = PDQ_FDDI_PH2;
180 if (!bus_dmamap_create(sc->sc_dmatag, m->m_pkthdr.len, 255,
181 m->m_pkthdr.len, 0, BUS_DMA_NOWAIT, &map)) {
182 if (!bus_dmamap_load_mbuf(sc->sc_dmatag, map, m,
183 BUS_DMA_WRITE|BUS_DMA_NOWAIT)) {
184 bus_dmamap_sync(sc->sc_dmatag, map, 0, m->m_pkthdr.len,
185 BUS_DMASYNC_PREWRITE);
187 m->m_flags |= M_HASTXDMAMAP;
190 if ((m->m_flags & M_HASTXDMAMAP) == 0)
194 if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) {
195 m->m_data[0] = PDQ_FDDI_PH0;
196 m->m_data[1] = PDQ_FDDI_PH1;
197 m->m_data[2] = PDQ_FDDI_PH2;
201 if (pdq_queue_transmit_data(sc->sc_pdq, m) == PDQ_FALSE)
205 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
206 IF_PREPEND(&ifp->if_snd, m);
209 PDQ_DO_TYPE2_PRODUCER(sc->sc_pdq);
210 sc->sc_flags &= ~PDQIF_DOWNCALL;
214 pdq_ifstart(struct ifnet *ifp)
216 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
219 pdq_ifstart_locked(ifp);
230 pdq_softc_t *sc = pdq->pdq_os_ctx;
231 struct ifnet *ifp = PDQ_IFNET(sc);
232 struct fddi_header *fh;
234 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
235 #if defined(PDQ_BUS_DMA)
238 * Even though the first mbuf start at the first fddi header octet,
239 * the dmamap starts PDQ_OS_HDR_OFFSET octets earlier. Any additional
240 * mbufs will start normally.
242 int offset = PDQ_OS_HDR_OFFSET;
244 for (m0 = m; m0 != NULL; m0 = m0->m_next, offset = 0) {
245 pdq_os_databuf_sync(sc, m0, offset, m0->m_len, BUS_DMASYNC_POSTREAD);
246 bus_dmamap_unload(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t));
247 bus_dmamap_destroy(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t));
248 m0->m_flags &= ~M_HASRXDMAMAP;
253 m->m_pkthdr.len = pktlen;
254 fh = mtod(m, struct fddi_header *);
255 if (drop || (fh->fddi_fc & (FDDIFC_L|FDDIFC_F)) != FDDIFC_LLC_ASYNC) {
256 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
257 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
258 PDQ_OS_DATABUF_FREE(pdq, m);
262 m->m_pkthdr.rcvif = ifp;
264 (*ifp->if_input)(ifp, m);
269 pdq_os_restart_transmitter(
272 pdq_softc_t *sc = pdq->pdq_os_ctx;
273 PDQ_IFNET(sc)->if_drv_flags &= ~IFF_DRV_OACTIVE;
274 if (IFQ_IS_EMPTY(&PDQ_IFNET(sc)->if_snd) == 0) {
275 sc->timer = PDQ_OS_TX_TIMEOUT;
276 if ((sc->sc_flags & PDQIF_DOWNCALL) == 0)
277 pdq_ifstart_locked(PDQ_IFNET(sc));
284 pdq_os_transmit_done(
288 pdq_softc_t *sc = pdq->pdq_os_ctx;
289 #if defined(NBPFILTER) && NBPFILTER > 0
290 if (PQD_IFNET(sc)->if_bpf != NULL)
293 PDQ_OS_DATABUF_FREE(pdq, m);
294 if_inc_counter(PDQ_IFNET(sc), IFCOUNTER_OPACKETS, 1);
303 pdq_softc_t *sc = pdq->pdq_os_ctx;
305 struct ifmultiaddr *ifma;
310 * ADDR_FILTER_SET is always issued before FILTER_SET so
311 * we can play with PDQ_ALLMULTI and not worry about
312 * queueing a FILTER_SET ourselves.
315 pdq->pdq_flags &= ~PDQ_ALLMULTI;
316 #if defined(IFF_ALLMULTI)
317 PDQ_IFNET(sc)->if_flags &= ~IFF_ALLMULTI;
320 if_maddr_rlock(PDQ_IFNET(sc));
321 for (ifma = TAILQ_FIRST(&PDQ_IFNET(sc)->if_multiaddrs); ifma && num_addrs > 0;
322 ifma = TAILQ_NEXT(ifma, ifma_link)) {
324 if (ifma->ifma_addr->sa_family != AF_LINK)
326 mcaddr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
327 ((u_short *) addr->lanaddr_bytes)[0] = ((u_short *) mcaddr)[0];
328 ((u_short *) addr->lanaddr_bytes)[1] = ((u_short *) mcaddr)[1];
329 ((u_short *) addr->lanaddr_bytes)[2] = ((u_short *) mcaddr)[2];
333 if_maddr_runlock(PDQ_IFNET(sc));
335 * If not all the address fit into the CAM, turn on all-multicast mode.
338 pdq->pdq_flags |= PDQ_ALLMULTI;
339 #if defined(IFF_ALLMULTI)
340 PDQ_IFNET(sc)->if_flags |= IFF_ALLMULTI;
345 #if defined(IFM_FDDI)
350 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
353 if (sc->sc_ifmedia.ifm_media & IFM_FDX) {
354 if ((sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) == 0) {
355 sc->sc_pdq->pdq_flags |= PDQ_WANT_FDX;
356 if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
359 } else if (sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) {
360 sc->sc_pdq->pdq_flags &= ~PDQ_WANT_FDX;
361 if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
372 struct ifmediareq *ifmr)
374 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
377 ifmr->ifm_status = IFM_AVALID;
378 if (sc->sc_pdq->pdq_flags & PDQ_IS_ONRING)
379 ifmr->ifm_status |= IFM_ACTIVE;
381 ifmr->ifm_active = (ifmr->ifm_current & ~IFM_FDX);
382 if (sc->sc_pdq->pdq_flags & PDQ_IS_FDX)
383 ifmr->ifm_active |= IFM_FDX;
388 pdq_os_update_status(
392 pdq_softc_t * const sc = pdq->pdq_os_ctx;
393 const pdq_response_status_chars_get_t *rsp = arg;
396 switch (rsp->status_chars_get.pmd_type[0]) {
397 case PDQ_PMD_TYPE_ANSI_MUTLI_MODE: media = IFM_FDDI_MMF; break;
398 case PDQ_PMD_TYPE_ANSI_SINGLE_MODE_TYPE_1: media = IFM_FDDI_SMF; break;
399 case PDQ_PMD_TYPE_ANSI_SIGNLE_MODE_TYPE_2: media = IFM_FDDI_SMF; break;
400 case PDQ_PMD_TYPE_UNSHIELDED_TWISTED_PAIR: media = IFM_FDDI_UTP; break;
401 default: media |= IFM_MANUAL;
404 if (rsp->status_chars_get.station_type == PDQ_STATION_TYPE_DAS)
405 media |= IFM_FDDI_DA;
407 sc->sc_ifmedia.ifm_media = media | IFM_FDDI;
409 #endif /* defined(IFM_FDDI) */
417 pdq_softc_t *sc = PDQ_OS_IFP_TO_SOFTC(ifp);
429 if (PDQ_IFNET(sc)->if_drv_flags & IFF_DRV_RUNNING) {
437 #if defined(IFM_FDDI) && defined(SIOCSIFMEDIA)
440 struct ifreq *ifr = (struct ifreq *)data;
441 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd);
447 error = fddi_ioctl(ifp, cmd, data);
455 #ifndef IFF_NOTRAILERS
456 #define IFF_NOTRAILERS 0
460 pdq_ifattach(pdq_softc_t *sc, const pdq_uint8_t *llc, pdq_type_t type)
464 KASSERT(type == PDQ_DEFPA, ("We only support PCI attachment."));
466 ifp = PDQ_IFNET(sc) = if_alloc(IFT_FDDI);
468 device_printf(sc->dev, "can not if_alloc()\n");
472 mtx_init(&sc->mtx, device_get_nameunit(sc->dev), MTX_NETWORK_LOCK,
474 callout_init_mtx(&sc->watchdog, &sc->mtx, 0);
476 if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev));
478 ifp->if_init = pdq_ifinit;
479 ifp->if_snd.ifq_maxlen = ifqmaxlen;
480 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;
482 ifp->if_ioctl = pdq_ifioctl;
483 ifp->if_start = pdq_ifstart;
485 #if defined(IFM_FDDI)
487 const int media = sc->sc_ifmedia.ifm_media;
488 ifmedia_init(&sc->sc_ifmedia, IFM_FDX,
489 pdq_ifmedia_change, pdq_ifmedia_status);
490 ifmedia_add(&sc->sc_ifmedia, media, 0, 0);
491 ifmedia_set(&sc->sc_ifmedia, media);
495 sc->sc_pdq = pdq_initialize(sc->mem_bst, sc->mem_bsh, ifp->if_xname, -1,
497 if (sc->sc_pdq == NULL) {
498 device_printf(sc->dev, "Initialization failed.\n");
502 fddi_ifattach(ifp, llc, FDDI_BPF_SUPPORTED);
507 pdq_ifdetach (pdq_softc_t *sc)
513 fddi_ifdetach(ifp, FDDI_BPF_SUPPORTED);
517 callout_drain(&sc->watchdog);
524 pdq_free (device_t dev)
528 sc = device_get_softc(dev);
531 bus_release_resource(dev, sc->io_type, sc->io_rid, sc->io);
533 bus_release_resource(dev, sc->mem_type, sc->mem_rid, sc->mem);
535 bus_teardown_intr(dev, sc->irq, sc->irq_ih);
537 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
544 if (mtx_initialized(&sc->mtx) != 0) {
545 mtx_destroy(&sc->mtx);
551 #if defined(PDQ_BUS_DMA)
553 pdq_os_memalloc_contig(
556 pdq_softc_t * const sc = pdq->pdq_os_ctx;
557 bus_dma_segment_t db_segs[1], ui_segs[1], cb_segs[1];
558 int db_nsegs = 0, ui_nsegs = 0;
562 not_ok = bus_dmamem_alloc(sc->sc_dmatag,
563 sizeof(*pdq->pdq_dbp), sizeof(*pdq->pdq_dbp),
564 sizeof(*pdq->pdq_dbp), db_segs, 1, &db_nsegs,
568 not_ok = bus_dmamem_map(sc->sc_dmatag, db_segs, db_nsegs,
569 sizeof(*pdq->pdq_dbp), (caddr_t *) &pdq->pdq_dbp,
574 not_ok = bus_dmamap_create(sc->sc_dmatag, db_segs[0].ds_len, 1,
575 0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_dbmap);
579 not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_dbmap,
580 pdq->pdq_dbp, sizeof(*pdq->pdq_dbp),
581 NULL, BUS_DMA_NOWAIT);
585 pdq->pdq_pa_descriptor_block = sc->sc_dbmap->dm_segs[0].ds_addr;
586 not_ok = bus_dmamem_alloc(sc->sc_dmatag,
587 PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE,
588 ui_segs, 1, &ui_nsegs, BUS_DMA_NOWAIT);
592 not_ok = bus_dmamem_map(sc->sc_dmatag, ui_segs, ui_nsegs,
594 (caddr_t *) &pdq->pdq_unsolicited_info.ui_events,
599 not_ok = bus_dmamap_create(sc->sc_dmatag, ui_segs[0].ds_len, 1,
600 PDQ_OS_PAGESIZE, 0, BUS_DMA_NOWAIT,
605 not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_uimap,
606 pdq->pdq_unsolicited_info.ui_events,
607 PDQ_OS_PAGESIZE, NULL, BUS_DMA_NOWAIT);
611 pdq->pdq_unsolicited_info.ui_pa_bufstart = sc->sc_uimap->dm_segs[0].ds_addr;
612 cb_segs[0] = db_segs[0];
613 cb_segs[0].ds_addr += offsetof(pdq_descriptor_block_t, pdqdb_consumer);
614 cb_segs[0].ds_len = sizeof(pdq_consumer_block_t);
615 not_ok = bus_dmamem_map(sc->sc_dmatag, cb_segs, 1,
616 sizeof(*pdq->pdq_cbp), (caddr_t *) &pdq->pdq_cbp,
617 BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
621 not_ok = bus_dmamap_create(sc->sc_dmatag, cb_segs[0].ds_len, 1,
622 0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_cbmap);
626 not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_cbmap,
627 (caddr_t) pdq->pdq_cbp, sizeof(*pdq->pdq_cbp),
628 NULL, BUS_DMA_NOWAIT);
631 pdq->pdq_pa_consumer_block = sc->sc_cbmap->dm_segs[0].ds_addr;
637 bus_dmamap_unload(sc->sc_dmatag, sc->sc_cbmap);
641 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_cbmap);
645 bus_dmamem_unmap(sc->sc_dmatag,
646 (caddr_t) pdq->pdq_cbp, sizeof(*pdq->pdq_cbp));
650 bus_dmamap_unload(sc->sc_dmatag, sc->sc_uimap);
654 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_uimap);
658 bus_dmamem_unmap(sc->sc_dmatag,
659 (caddr_t) pdq->pdq_unsolicited_info.ui_events,
664 bus_dmamem_free(sc->sc_dmatag, ui_segs, ui_nsegs);
668 bus_dmamap_unload(sc->sc_dmatag, sc->sc_dbmap);
672 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_dbmap);
676 bus_dmamem_unmap(sc->sc_dmatag,
677 (caddr_t) pdq->pdq_dbp,
678 sizeof(*pdq->pdq_dbp));
682 bus_dmamem_free(sc->sc_dmatag, db_segs, db_nsegs);
691 pdq_os_descriptor_block_sync(
697 bus_dmamap_sync(sc->sc_dmatag, sc->sc_dbmap, offset, length, ops);
701 pdq_os_consumer_block_sync(
705 bus_dmamap_sync(sc->sc_dmatag, sc->sc_cbmap, 0, sizeof(pdq_consumer_block_t), ops);
709 pdq_os_unsolicited_event_sync(
715 bus_dmamap_sync(sc->sc_dmatag, sc->sc_uimap, offset, length, ops);
726 bus_dmamap_sync(sc->sc_dmatag, M_GETCTX(m, bus_dmamap_t), offset, length, ops);
734 if (m->m_flags & (M_HASRXDMAMAP|M_HASTXDMAMAP)) {
735 bus_dmamap_t map = M_GETCTX(m, bus_dmamap_t);
736 bus_dmamap_unload(sc->sc_dmatag, map);
737 bus_dmamap_destroy(sc->sc_dmatag, map);
738 m->m_flags &= ~(M_HASRXDMAMAP|M_HASTXDMAMAP);
744 pdq_os_databuf_alloc(
750 MGETHDR(m, M_NOWAIT, MT_DATA);
752 printf("%s: can't alloc small buf\n", sc->sc_dev.dv_xname);
755 if (!(MCLGET(m, M_NOWAIT))) {
756 printf("%s: can't alloc cluster\n", sc->sc_dev.dv_xname);
760 m->m_pkthdr.len = m->m_len = PDQ_OS_DATABUF_SIZE;
762 if (bus_dmamap_create(sc->sc_dmatag, PDQ_OS_DATABUF_SIZE,
763 1, PDQ_OS_DATABUF_SIZE, 0, BUS_DMA_NOWAIT, &map)) {
764 printf("%s: can't create dmamap\n", sc->sc_dev.dv_xname);
768 if (bus_dmamap_load_mbuf(sc->sc_dmatag, map, m,
769 BUS_DMA_READ|BUS_DMA_NOWAIT)) {
770 printf("%s: can't load dmamap\n", sc->sc_dev.dv_xname);
771 bus_dmamap_destroy(sc->sc_dmatag, map);
775 m->m_flags |= M_HASRXDMAMAP;