1 /* $NetBSD: pdq_ifsubr.c,v 1.38 2001/12/21 23:21:47 matt Exp $ */
4 * Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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
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.
26 * $NetBSD: pdq_ifsubr.c,v 1.12 1997/06/05 01:56:35 thomas Exp$
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
33 * DEC PDQ FDDI Controller; code for BSD derived operating systems
35 * This module provide bus independent BSD specific O/S functions.
36 * (ie. it provides an ifnet interface to the rest of the system)
42 #include <sys/param.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
46 #include <sys/mutex.h>
47 #include <sys/malloc.h>
48 #include <sys/socket.h>
49 #include <sys/sockio.h>
51 #include <sys/module.h>
54 #include <machine/bus.h>
55 #include <machine/resource.h>
59 #include <net/if_arp.h>
60 #include <net/if_dl.h>
61 #include <net/if_media.h>
62 #include <net/if_types.h>
67 #include <dev/pdq/pdq_freebsd.h>
68 #include <dev/pdq/pdqreg.h>
70 devclass_t pdq_devclass;
72 static void pdq_watchdog(void *);
75 pdq_ifstop(pdq_softc_t *sc)
78 PDQ_IFNET(sc)->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
79 sc->sc_pdq->pdq_flags &= ~PDQ_RUNNING;
81 callout_stop(&sc->watchdog);
85 pdq_ifinit_locked(pdq_softc_t *sc)
89 if (PDQ_IFNET(sc)->if_flags & IFF_UP) {
90 PDQ_IFNET(sc)->if_drv_flags |= IFF_DRV_RUNNING;
91 if (PDQ_IFNET(sc)->if_flags & IFF_PROMISC) {
92 sc->sc_pdq->pdq_flags |= PDQ_PROMISC;
94 sc->sc_pdq->pdq_flags &= ~PDQ_PROMISC;
96 if (PDQ_IFNET(sc)->if_flags & IFF_LINK1) {
97 sc->sc_pdq->pdq_flags |= PDQ_PASS_SMT;
99 sc->sc_pdq->pdq_flags &= ~PDQ_PASS_SMT;
101 sc->sc_pdq->pdq_flags |= PDQ_RUNNING;
103 callout_reset(&sc->watchdog, hz, pdq_watchdog, sc);
109 pdq_ifinit(void *arg)
115 pdq_ifinit_locked(sc);
120 pdq_watchdog(void *arg)
127 callout_reset(&sc->watchdog, hz, pdq_watchdog, sc);
128 if (sc->timer == 0 || --sc->timer > 0)
132 * No progress was made on the transmit queue for PDQ_OS_TX_TRANSMIT
133 * seconds. Remove all queued packets.
136 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
139 IFQ_DEQUEUE(&ifp->if_snd, m);
142 PDQ_OS_DATABUF_FREE(PDQ_OS_IFP_TO_SOFTC(ifp)->sc_pdq, m);
147 pdq_ifstart_locked(struct ifnet *ifp)
149 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
154 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
158 sc->timer = PDQ_OS_TX_TIMEOUT;
160 if ((sc->sc_pdq->pdq_flags & PDQ_TXOK) == 0) {
161 PDQ_IFNET(sc)->if_drv_flags |= IFF_DRV_OACTIVE;
164 sc->sc_flags |= PDQIF_DOWNCALL;
166 IF_DEQUEUE(&ifp->if_snd, m);
169 #if defined(PDQ_BUS_DMA) && !defined(PDQ_BUS_DMA_NOTX)
170 if ((m->m_flags & M_HASTXDMAMAP) == 0) {
172 if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) {
173 m->m_data[0] = PDQ_FDDI_PH0;
174 m->m_data[1] = PDQ_FDDI_PH1;
175 m->m_data[2] = PDQ_FDDI_PH2;
177 if (!bus_dmamap_create(sc->sc_dmatag, m->m_pkthdr.len, 255,
178 m->m_pkthdr.len, 0, BUS_DMA_NOWAIT, &map)) {
179 if (!bus_dmamap_load_mbuf(sc->sc_dmatag, map, m,
180 BUS_DMA_WRITE|BUS_DMA_NOWAIT)) {
181 bus_dmamap_sync(sc->sc_dmatag, map, 0, m->m_pkthdr.len,
182 BUS_DMASYNC_PREWRITE);
184 m->m_flags |= M_HASTXDMAMAP;
187 if ((m->m_flags & M_HASTXDMAMAP) == 0)
191 if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) {
192 m->m_data[0] = PDQ_FDDI_PH0;
193 m->m_data[1] = PDQ_FDDI_PH1;
194 m->m_data[2] = PDQ_FDDI_PH2;
198 if (pdq_queue_transmit_data(sc->sc_pdq, m) == PDQ_FALSE)
202 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
203 IF_PREPEND(&ifp->if_snd, m);
206 PDQ_DO_TYPE2_PRODUCER(sc->sc_pdq);
207 sc->sc_flags &= ~PDQIF_DOWNCALL;
211 pdq_ifstart(struct ifnet *ifp)
213 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
216 pdq_ifstart_locked(ifp);
227 pdq_softc_t *sc = pdq->pdq_os_ctx;
228 struct ifnet *ifp = PDQ_IFNET(sc);
229 struct fddi_header *fh;
232 #if defined(PDQ_BUS_DMA)
235 * Even though the first mbuf start at the first fddi header octet,
236 * the dmamap starts PDQ_OS_HDR_OFFSET octets earlier. Any additional
237 * mbufs will start normally.
239 int offset = PDQ_OS_HDR_OFFSET;
241 for (m0 = m; m0 != NULL; m0 = m0->m_next, offset = 0) {
242 pdq_os_databuf_sync(sc, m0, offset, m0->m_len, BUS_DMASYNC_POSTREAD);
243 bus_dmamap_unload(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t));
244 bus_dmamap_destroy(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t));
245 m0->m_flags &= ~M_HASRXDMAMAP;
250 m->m_pkthdr.len = pktlen;
251 fh = mtod(m, struct fddi_header *);
252 if (drop || (fh->fddi_fc & (FDDIFC_L|FDDIFC_F)) != FDDIFC_LLC_ASYNC) {
255 PDQ_OS_DATABUF_FREE(pdq, m);
259 m->m_pkthdr.rcvif = ifp;
261 (*ifp->if_input)(ifp, m);
266 pdq_os_restart_transmitter(
269 pdq_softc_t *sc = pdq->pdq_os_ctx;
270 PDQ_IFNET(sc)->if_drv_flags &= ~IFF_DRV_OACTIVE;
271 if (IFQ_IS_EMPTY(&PDQ_IFNET(sc)->if_snd) == 0) {
272 sc->timer = PDQ_OS_TX_TIMEOUT;
273 if ((sc->sc_flags & PDQIF_DOWNCALL) == 0)
274 pdq_ifstart_locked(PDQ_IFNET(sc));
281 pdq_os_transmit_done(
285 pdq_softc_t *sc = pdq->pdq_os_ctx;
286 #if defined(NBPFILTER) && NBPFILTER > 0
287 if (PQD_IFNET(sc)->if_bpf != NULL)
290 PDQ_OS_DATABUF_FREE(pdq, m);
291 PDQ_IFNET(sc)->if_opackets++;
300 pdq_softc_t *sc = pdq->pdq_os_ctx;
302 struct ifmultiaddr *ifma;
307 * ADDR_FILTER_SET is always issued before FILTER_SET so
308 * we can play with PDQ_ALLMULTI and not worry about
309 * queueing a FILTER_SET ourselves.
312 pdq->pdq_flags &= ~PDQ_ALLMULTI;
313 #if defined(IFF_ALLMULTI)
314 PDQ_IFNET(sc)->if_flags &= ~IFF_ALLMULTI;
317 if_maddr_rlock(PDQ_IFNET(sc));
318 for (ifma = TAILQ_FIRST(&PDQ_IFNET(sc)->if_multiaddrs); ifma && num_addrs > 0;
319 ifma = TAILQ_NEXT(ifma, ifma_link)) {
321 if (ifma->ifma_addr->sa_family != AF_LINK)
323 mcaddr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
324 ((u_short *) addr->lanaddr_bytes)[0] = ((u_short *) mcaddr)[0];
325 ((u_short *) addr->lanaddr_bytes)[1] = ((u_short *) mcaddr)[1];
326 ((u_short *) addr->lanaddr_bytes)[2] = ((u_short *) mcaddr)[2];
330 if_maddr_runlock(PDQ_IFNET(sc));
332 * If not all the address fit into the CAM, turn on all-multicast mode.
335 pdq->pdq_flags |= PDQ_ALLMULTI;
336 #if defined(IFF_ALLMULTI)
337 PDQ_IFNET(sc)->if_flags |= IFF_ALLMULTI;
342 #if defined(IFM_FDDI)
347 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
350 if (sc->sc_ifmedia.ifm_media & IFM_FDX) {
351 if ((sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) == 0) {
352 sc->sc_pdq->pdq_flags |= PDQ_WANT_FDX;
353 if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
356 } else if (sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) {
357 sc->sc_pdq->pdq_flags &= ~PDQ_WANT_FDX;
358 if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
369 struct ifmediareq *ifmr)
371 pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
374 ifmr->ifm_status = IFM_AVALID;
375 if (sc->sc_pdq->pdq_flags & PDQ_IS_ONRING)
376 ifmr->ifm_status |= IFM_ACTIVE;
378 ifmr->ifm_active = (ifmr->ifm_current & ~IFM_FDX);
379 if (sc->sc_pdq->pdq_flags & PDQ_IS_FDX)
380 ifmr->ifm_active |= IFM_FDX;
385 pdq_os_update_status(
389 pdq_softc_t * const sc = pdq->pdq_os_ctx;
390 const pdq_response_status_chars_get_t *rsp = arg;
393 switch (rsp->status_chars_get.pmd_type[0]) {
394 case PDQ_PMD_TYPE_ANSI_MUTLI_MODE: media = IFM_FDDI_MMF; break;
395 case PDQ_PMD_TYPE_ANSI_SINGLE_MODE_TYPE_1: media = IFM_FDDI_SMF; break;
396 case PDQ_PMD_TYPE_ANSI_SIGNLE_MODE_TYPE_2: media = IFM_FDDI_SMF; break;
397 case PDQ_PMD_TYPE_UNSHIELDED_TWISTED_PAIR: media = IFM_FDDI_UTP; break;
398 default: media |= IFM_MANUAL;
401 if (rsp->status_chars_get.station_type == PDQ_STATION_TYPE_DAS)
402 media |= IFM_FDDI_DA;
404 sc->sc_ifmedia.ifm_media = media | IFM_FDDI;
406 #endif /* defined(IFM_FDDI) */
414 pdq_softc_t *sc = PDQ_OS_IFP_TO_SOFTC(ifp);
426 if (PDQ_IFNET(sc)->if_drv_flags & IFF_DRV_RUNNING) {
434 #if defined(IFM_FDDI) && defined(SIOCSIFMEDIA)
437 struct ifreq *ifr = (struct ifreq *)data;
438 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd);
444 error = fddi_ioctl(ifp, cmd, data);
452 #ifndef IFF_NOTRAILERS
453 #define IFF_NOTRAILERS 0
457 pdq_ifattach(pdq_softc_t *sc, const pdq_uint8_t *llc, pdq_type_t type)
461 ifp = PDQ_IFNET(sc) = if_alloc(IFT_FDDI);
463 device_printf(sc->dev, "can not if_alloc()\n");
467 mtx_init(&sc->mtx, device_get_nameunit(sc->dev), MTX_NETWORK_LOCK,
469 callout_init_mtx(&sc->watchdog, &sc->mtx, 0);
471 if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev));
473 ifp->if_init = pdq_ifinit;
474 ifp->if_snd.ifq_maxlen = ifqmaxlen;
475 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;
477 ifp->if_ioctl = pdq_ifioctl;
478 ifp->if_start = pdq_ifstart;
480 #if defined(IFM_FDDI)
482 const int media = sc->sc_ifmedia.ifm_media;
483 ifmedia_init(&sc->sc_ifmedia, IFM_FDX,
484 pdq_ifmedia_change, pdq_ifmedia_status);
485 ifmedia_add(&sc->sc_ifmedia, media, 0, 0);
486 ifmedia_set(&sc->sc_ifmedia, media);
490 sc->sc_pdq = pdq_initialize(sc->mem_bst, sc->mem_bsh, ifp->if_xname, -1,
492 if (sc->sc_pdq == NULL) {
493 device_printf(sc->dev, "Initialization failed.\n");
497 fddi_ifattach(ifp, llc, FDDI_BPF_SUPPORTED);
502 pdq_ifdetach (pdq_softc_t *sc)
508 fddi_ifdetach(ifp, FDDI_BPF_SUPPORTED);
512 callout_drain(&sc->watchdog);
519 pdq_free (device_t dev)
523 sc = device_get_softc(dev);
526 bus_release_resource(dev, sc->io_type, sc->io_rid, sc->io);
528 bus_release_resource(dev, sc->mem_type, sc->mem_rid, sc->mem);
530 bus_teardown_intr(dev, sc->irq, sc->irq_ih);
532 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
539 if (mtx_initialized(&sc->mtx) != 0) {
540 mtx_destroy(&sc->mtx);
546 #if defined(PDQ_BUS_DMA)
548 pdq_os_memalloc_contig(
551 pdq_softc_t * const sc = pdq->pdq_os_ctx;
552 bus_dma_segment_t db_segs[1], ui_segs[1], cb_segs[1];
553 int db_nsegs = 0, ui_nsegs = 0;
557 not_ok = bus_dmamem_alloc(sc->sc_dmatag,
558 sizeof(*pdq->pdq_dbp), sizeof(*pdq->pdq_dbp),
559 sizeof(*pdq->pdq_dbp), db_segs, 1, &db_nsegs,
563 not_ok = bus_dmamem_map(sc->sc_dmatag, db_segs, db_nsegs,
564 sizeof(*pdq->pdq_dbp), (caddr_t *) &pdq->pdq_dbp,
569 not_ok = bus_dmamap_create(sc->sc_dmatag, db_segs[0].ds_len, 1,
570 0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_dbmap);
574 not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_dbmap,
575 pdq->pdq_dbp, sizeof(*pdq->pdq_dbp),
576 NULL, BUS_DMA_NOWAIT);
580 pdq->pdq_pa_descriptor_block = sc->sc_dbmap->dm_segs[0].ds_addr;
581 not_ok = bus_dmamem_alloc(sc->sc_dmatag,
582 PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE,
583 ui_segs, 1, &ui_nsegs, BUS_DMA_NOWAIT);
587 not_ok = bus_dmamem_map(sc->sc_dmatag, ui_segs, ui_nsegs,
589 (caddr_t *) &pdq->pdq_unsolicited_info.ui_events,
594 not_ok = bus_dmamap_create(sc->sc_dmatag, ui_segs[0].ds_len, 1,
595 PDQ_OS_PAGESIZE, 0, BUS_DMA_NOWAIT,
600 not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_uimap,
601 pdq->pdq_unsolicited_info.ui_events,
602 PDQ_OS_PAGESIZE, NULL, BUS_DMA_NOWAIT);
606 pdq->pdq_unsolicited_info.ui_pa_bufstart = sc->sc_uimap->dm_segs[0].ds_addr;
607 cb_segs[0] = db_segs[0];
608 cb_segs[0].ds_addr += offsetof(pdq_descriptor_block_t, pdqdb_consumer);
609 cb_segs[0].ds_len = sizeof(pdq_consumer_block_t);
610 not_ok = bus_dmamem_map(sc->sc_dmatag, cb_segs, 1,
611 sizeof(*pdq->pdq_cbp), (caddr_t *) &pdq->pdq_cbp,
612 BUS_DMA_NOWAIT|BUS_DMA_COHERENT);
616 not_ok = bus_dmamap_create(sc->sc_dmatag, cb_segs[0].ds_len, 1,
617 0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_cbmap);
621 not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_cbmap,
622 (caddr_t) pdq->pdq_cbp, sizeof(*pdq->pdq_cbp),
623 NULL, BUS_DMA_NOWAIT);
626 pdq->pdq_pa_consumer_block = sc->sc_cbmap->dm_segs[0].ds_addr;
632 bus_dmamap_unload(sc->sc_dmatag, sc->sc_cbmap);
636 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_cbmap);
640 bus_dmamem_unmap(sc->sc_dmatag,
641 (caddr_t) pdq->pdq_cbp, sizeof(*pdq->pdq_cbp));
645 bus_dmamap_unload(sc->sc_dmatag, sc->sc_uimap);
649 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_uimap);
653 bus_dmamem_unmap(sc->sc_dmatag,
654 (caddr_t) pdq->pdq_unsolicited_info.ui_events,
659 bus_dmamem_free(sc->sc_dmatag, ui_segs, ui_nsegs);
663 bus_dmamap_unload(sc->sc_dmatag, sc->sc_dbmap);
667 bus_dmamap_destroy(sc->sc_dmatag, sc->sc_dbmap);
671 bus_dmamem_unmap(sc->sc_dmatag,
672 (caddr_t) pdq->pdq_dbp,
673 sizeof(*pdq->pdq_dbp));
677 bus_dmamem_free(sc->sc_dmatag, db_segs, db_nsegs);
686 pdq_os_descriptor_block_sync(
692 bus_dmamap_sync(sc->sc_dmatag, sc->sc_dbmap, offset, length, ops);
696 pdq_os_consumer_block_sync(
700 bus_dmamap_sync(sc->sc_dmatag, sc->sc_cbmap, 0, sizeof(pdq_consumer_block_t), ops);
704 pdq_os_unsolicited_event_sync(
710 bus_dmamap_sync(sc->sc_dmatag, sc->sc_uimap, offset, length, ops);
721 bus_dmamap_sync(sc->sc_dmatag, M_GETCTX(m, bus_dmamap_t), offset, length, ops);
729 if (m->m_flags & (M_HASRXDMAMAP|M_HASTXDMAMAP)) {
730 bus_dmamap_t map = M_GETCTX(m, bus_dmamap_t);
731 bus_dmamap_unload(sc->sc_dmatag, map);
732 bus_dmamap_destroy(sc->sc_dmatag, map);
733 m->m_flags &= ~(M_HASRXDMAMAP|M_HASTXDMAMAP);
739 pdq_os_databuf_alloc(
745 MGETHDR(m, M_NOWAIT, MT_DATA);
747 printf("%s: can't alloc small buf\n", sc->sc_dev.dv_xname);
751 if ((m->m_flags & M_EXT) == 0) {
752 printf("%s: can't alloc cluster\n", sc->sc_dev.dv_xname);
756 m->m_pkthdr.len = m->m_len = PDQ_OS_DATABUF_SIZE;
758 if (bus_dmamap_create(sc->sc_dmatag, PDQ_OS_DATABUF_SIZE,
759 1, PDQ_OS_DATABUF_SIZE, 0, BUS_DMA_NOWAIT, &map)) {
760 printf("%s: can't create dmamap\n", sc->sc_dev.dv_xname);
764 if (bus_dmamap_load_mbuf(sc->sc_dmatag, map, m,
765 BUS_DMA_READ|BUS_DMA_NOWAIT)) {
766 printf("%s: can't load dmamap\n", sc->sc_dev.dv_xname);
767 bus_dmamap_destroy(sc->sc_dmatag, map);
771 m->m_flags |= M_HASRXDMAMAP;