diff options
Diffstat (limited to 'sys/dev/pdq/pdq_ifsubr.c')
| -rw-r--r-- | sys/dev/pdq/pdq_ifsubr.c | 736 |
1 files changed, 736 insertions, 0 deletions
diff --git a/sys/dev/pdq/pdq_ifsubr.c b/sys/dev/pdq/pdq_ifsubr.c new file mode 100644 index 0000000..064bb68 --- /dev/null +++ b/sys/dev/pdq/pdq_ifsubr.c @@ -0,0 +1,736 @@ +/* $NetBSD: pdq_ifsubr.c,v 1.38 2001/12/21 23:21:47 matt Exp $ */ + +/*- + * Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $NetBSD: pdq_ifsubr.c,v 1.12 1997/06/05 01:56:35 thomas Exp$ + * $FreeBSD$ + */ + +/* + * DEC PDQ FDDI Controller; code for BSD derived operating systems + * + * This module provide bus independent BSD specific O/S functions. + * (ie. it provides an ifnet interface to the rest of the system) + */ + +#ifdef __NetBSD__ +#include <sys/cdefs.h> +__KERNEL_RCSID(0, "$NetBSD: pdq_ifsubr.c,v 1.38 2001/12/21 23:21:47 matt Exp $"); +#endif + +#define PDQ_OSSUPPORT + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/malloc.h> +#include <sys/socket.h> +#include <sys/sockio.h> + +#include <sys/module.h> +#include <sys/bus.h> + +#include <machine/bus_memio.h> +#include <machine/bus_pio.h> +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/rman.h> + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/if_dl.h> +#include <net/if_media.h> +#include <net/fddi.h> + +#include <net/bpf.h> + +#include <dev/pdq/pdq_freebsd.h> +#include <dev/pdq/pdqreg.h> + +devclass_t pdq_devclass; + +static void +pdq_ifinit( + pdq_softc_t *sc) +{ + if (sc->sc_if.if_flags & IFF_UP) { + sc->sc_if.if_flags |= IFF_RUNNING; + if (sc->sc_if.if_flags & IFF_PROMISC) { + sc->sc_pdq->pdq_flags |= PDQ_PROMISC; + } else { + sc->sc_pdq->pdq_flags &= ~PDQ_PROMISC; + } + if (sc->sc_if.if_flags & IFF_LINK1) { + sc->sc_pdq->pdq_flags |= PDQ_PASS_SMT; + } else { + sc->sc_pdq->pdq_flags &= ~PDQ_PASS_SMT; + } + sc->sc_pdq->pdq_flags |= PDQ_RUNNING; + pdq_run(sc->sc_pdq); + } else { + sc->sc_if.if_flags &= ~IFF_RUNNING; + sc->sc_pdq->pdq_flags &= ~PDQ_RUNNING; + pdq_stop(sc->sc_pdq); + } +} + +static void +pdq_ifwatchdog( + struct ifnet *ifp) +{ + /* + * No progress was made on the transmit queue for PDQ_OS_TX_TRANSMIT + * seconds. Remove all queued packets. + */ + + ifp->if_flags &= ~IFF_OACTIVE; + ifp->if_timer = 0; + for (;;) { + struct mbuf *m; + IFQ_DEQUEUE(&ifp->if_snd, m); + if (m == NULL) + return; + PDQ_OS_DATABUF_FREE(PDQ_OS_IFP_TO_SOFTC(ifp)->sc_pdq, m); + } +} + +static void +pdq_ifstart( + struct ifnet *ifp) +{ + pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp); + struct mbuf *m; + int tx = 0; + + if ((ifp->if_flags & IFF_RUNNING) == 0) + return; + + if (sc->sc_if.if_timer == 0) + sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT; + + if ((sc->sc_pdq->pdq_flags & PDQ_TXOK) == 0) { + sc->sc_if.if_flags |= IFF_OACTIVE; + return; + } + sc->sc_flags |= PDQIF_DOWNCALL; + for (;; tx = 1) { + IF_DEQUEUE(&ifp->if_snd, m); + if (m == NULL) + break; +#if defined(PDQ_BUS_DMA) && !defined(PDQ_BUS_DMA_NOTX) + if ((m->m_flags & M_HASTXDMAMAP) == 0) { + bus_dmamap_t map; + if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) { + m->m_data[0] = PDQ_FDDI_PH0; + m->m_data[1] = PDQ_FDDI_PH1; + m->m_data[2] = PDQ_FDDI_PH2; + } + if (!bus_dmamap_create(sc->sc_dmatag, m->m_pkthdr.len, 255, + m->m_pkthdr.len, 0, BUS_DMA_NOWAIT, &map)) { + if (!bus_dmamap_load_mbuf(sc->sc_dmatag, map, m, + BUS_DMA_WRITE|BUS_DMA_NOWAIT)) { + bus_dmamap_sync(sc->sc_dmatag, map, 0, m->m_pkthdr.len, + BUS_DMASYNC_PREWRITE); + M_SETCTX(m, map); + m->m_flags |= M_HASTXDMAMAP; + } + } + if ((m->m_flags & M_HASTXDMAMAP) == 0) + break; + } +#else + if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) { + m->m_data[0] = PDQ_FDDI_PH0; + m->m_data[1] = PDQ_FDDI_PH1; + m->m_data[2] = PDQ_FDDI_PH2; + } +#endif + + if (pdq_queue_transmit_data(sc->sc_pdq, m) == PDQ_FALSE) + break; + } + if (m != NULL) { + ifp->if_flags |= IFF_OACTIVE; + IF_PREPEND(&ifp->if_snd, m); + } + if (tx) + PDQ_DO_TYPE2_PRODUCER(sc->sc_pdq); + sc->sc_flags &= ~PDQIF_DOWNCALL; +} + +void +pdq_os_receive_pdu( + pdq_t *pdq, + struct mbuf *m, + size_t pktlen, + int drop) +{ + pdq_softc_t *sc = pdq->pdq_os_ctx; + struct ifnet *ifp = &sc->sc_if; + struct fddi_header *fh; + + ifp->if_ipackets++; +#if defined(PDQ_BUS_DMA) + { + /* + * Even though the first mbuf start at the first fddi header octet, + * the dmamap starts PDQ_OS_HDR_OFFSET octets earlier. Any additional + * mbufs will start normally. + */ + int offset = PDQ_OS_HDR_OFFSET; + struct mbuf *m0; + for (m0 = m; m0 != NULL; m0 = m0->m_next, offset = 0) { + pdq_os_databuf_sync(sc, m0, offset, m0->m_len, BUS_DMASYNC_POSTREAD); + bus_dmamap_unload(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t)); + bus_dmamap_destroy(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t)); + m0->m_flags &= ~M_HASRXDMAMAP; + M_SETCTX(m0, NULL); + } + } +#endif + m->m_pkthdr.len = pktlen; +#if NBPFILTER > 0 + if (sc->sc_bpf != NULL) + PDQ_BPF_MTAP(sc, m); +#endif + fh = mtod(m, struct fddi_header *); + if (drop || (fh->fddi_fc & (FDDIFC_L|FDDIFC_F)) != FDDIFC_LLC_ASYNC) { + ifp->if_iqdrops++; + ifp->if_ierrors++; + PDQ_OS_DATABUF_FREE(pdq, m); + return; + } + + m->m_pkthdr.rcvif = ifp; + (*ifp->if_input)(ifp, m); +} + +void +pdq_os_restart_transmitter( + pdq_t *pdq) +{ + pdq_softc_t *sc = pdq->pdq_os_ctx; + sc->sc_if.if_flags &= ~IFF_OACTIVE; + if (IFQ_IS_EMPTY(&sc->sc_if.if_snd) == 0) { + sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT; + if ((sc->sc_flags & PDQIF_DOWNCALL) == 0) + pdq_ifstart(&sc->sc_if); + } else { + sc->sc_if.if_timer = 0; + } +} + +void +pdq_os_transmit_done( + pdq_t *pdq, + struct mbuf *m) +{ + pdq_softc_t *sc = pdq->pdq_os_ctx; +#if NBPFILTER > 0 + if (sc->sc_bpf != NULL) + PDQ_BPF_MTAP(sc, m); +#endif + PDQ_OS_DATABUF_FREE(pdq, m); + sc->sc_if.if_opackets++; +} + +void +pdq_os_addr_fill( + pdq_t *pdq, + pdq_lanaddr_t *addr, + size_t num_addrs) +{ + pdq_softc_t *sc = pdq->pdq_os_ctx; + struct ifnet *ifp; + struct ifmultiaddr *ifma; + + ifp = &sc->arpcom.ac_if; + + /* + * ADDR_FILTER_SET is always issued before FILTER_SET so + * we can play with PDQ_ALLMULTI and not worry about + * queueing a FILTER_SET ourselves. + */ + + pdq->pdq_flags &= ~PDQ_ALLMULTI; +#if defined(IFF_ALLMULTI) + sc->sc_if.if_flags &= ~IFF_ALLMULTI; +#endif + + for (ifma = TAILQ_FIRST(&sc->sc_if.if_multiaddrs); ifma && num_addrs > 0; + ifma = TAILQ_NEXT(ifma, ifma_link)) { + char *mcaddr; + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + mcaddr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr); + ((u_short *) addr->lanaddr_bytes)[0] = ((u_short *) mcaddr)[0]; + ((u_short *) addr->lanaddr_bytes)[1] = ((u_short *) mcaddr)[1]; + ((u_short *) addr->lanaddr_bytes)[2] = ((u_short *) mcaddr)[2]; + addr++; + num_addrs--; + } + /* + * If not all the address fit into the CAM, turn on all-multicast mode. + */ + if (ifma != NULL) { + pdq->pdq_flags |= PDQ_ALLMULTI; +#if defined(IFF_ALLMULTI) + sc->sc_if.if_flags |= IFF_ALLMULTI; +#endif + } +} + +#if defined(IFM_FDDI) +static int +pdq_ifmedia_change( + struct ifnet *ifp) +{ + pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp); + + if (sc->sc_ifmedia.ifm_media & IFM_FDX) { + if ((sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) == 0) { + sc->sc_pdq->pdq_flags |= PDQ_WANT_FDX; + if (sc->sc_pdq->pdq_flags & PDQ_RUNNING) + pdq_run(sc->sc_pdq); + } + } else if (sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) { + sc->sc_pdq->pdq_flags &= ~PDQ_WANT_FDX; + if (sc->sc_pdq->pdq_flags & PDQ_RUNNING) + pdq_run(sc->sc_pdq); + } + + return 0; +} + +static void +pdq_ifmedia_status( + struct ifnet *ifp, + struct ifmediareq *ifmr) +{ + pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp); + + ifmr->ifm_status = IFM_AVALID; + if (sc->sc_pdq->pdq_flags & PDQ_IS_ONRING) + ifmr->ifm_status |= IFM_ACTIVE; + + ifmr->ifm_active = (ifmr->ifm_current & ~IFM_FDX); + if (sc->sc_pdq->pdq_flags & PDQ_IS_FDX) + ifmr->ifm_active |= IFM_FDX; +} + +void +pdq_os_update_status( + pdq_t *pdq, + const void *arg) +{ + pdq_softc_t * const sc = pdq->pdq_os_ctx; + const pdq_response_status_chars_get_t *rsp = arg; + int media = 0; + + switch (rsp->status_chars_get.pmd_type[0]) { + case PDQ_PMD_TYPE_ANSI_MUTLI_MODE: media = IFM_FDDI_MMF; break; + case PDQ_PMD_TYPE_ANSI_SINGLE_MODE_TYPE_1: media = IFM_FDDI_SMF; break; + case PDQ_PMD_TYPE_ANSI_SIGNLE_MODE_TYPE_2: media = IFM_FDDI_SMF; break; + case PDQ_PMD_TYPE_UNSHIELDED_TWISTED_PAIR: media = IFM_FDDI_UTP; break; + default: media |= IFM_MANUAL; + } + + if (rsp->status_chars_get.station_type == PDQ_STATION_TYPE_DAS) + media |= IFM_FDDI_DA; + + sc->sc_ifmedia.ifm_media = media | IFM_FDDI; +} +#endif /* defined(IFM_FDDI) */ + +static int +pdq_ifioctl( + struct ifnet *ifp, + u_long cmd, + caddr_t data) +{ + pdq_softc_t *sc = PDQ_OS_IFP_TO_SOFTC(ifp); + int error = 0; + + PDQ_LOCK(sc); + + switch (cmd) { + case SIOCSIFMTU: + case SIOCGIFADDR: + case SIOCSIFADDR: { + error = fddi_ioctl(ifp, cmd, data); + break; + } + + case SIOCSIFFLAGS: { + pdq_ifinit(sc); + break; + } + + case SIOCADDMULTI: + case SIOCDELMULTI: { + if (sc->sc_if.if_flags & IFF_RUNNING) { + pdq_run(sc->sc_pdq); + error = 0; + } + break; + } + +#if defined(IFM_FDDI) && defined(SIOCSIFMEDIA) + case SIOCSIFMEDIA: + case SIOCGIFMEDIA: { + struct ifreq *ifr = (struct ifreq *)data; + error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd); + break; + } +#endif + + default: { + error = EINVAL; + break; + } + } + + PDQ_UNLOCK(sc); + return error; +} + +#ifndef IFF_NOTRAILERS +#define IFF_NOTRAILERS 0 +#endif + +void +pdq_ifattach(pdq_softc_t *sc) +{ + struct ifnet *ifp = &sc->sc_if; + + mtx_init(&sc->mtx, device_get_nameunit(sc->dev), MTX_NETWORK_LOCK, + MTX_DEF | MTX_RECURSE); + + ifp->if_softc = sc; + ifp->if_init = (if_init_f_t *)pdq_ifinit; + ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; + ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST; + +#if (defined(__FreeBSD__) && BSD >= 199506) || defined(__NetBSD__) + ifp->if_watchdog = pdq_ifwatchdog; +#else + ifp->if_watchdog = ifwatchdog; +#endif + + ifp->if_ioctl = pdq_ifioctl; +#if !defined(__NetBSD__) && !defined(__FreeBSD__) + ifp->if_output = fddi_output; +#endif + ifp->if_start = pdq_ifstart; + +#if defined(IFM_FDDI) + { + const int media = sc->sc_ifmedia.ifm_media; + ifmedia_init(&sc->sc_ifmedia, IFM_FDX, + pdq_ifmedia_change, pdq_ifmedia_status); + ifmedia_add(&sc->sc_ifmedia, media, 0, 0); + ifmedia_set(&sc->sc_ifmedia, media); + } +#endif + + if_attach(ifp); +#if defined(__NetBSD__) + fddi_ifattach(ifp, (caddr_t)&sc->sc_pdq->pdq_hwaddr); +#else + fddi_ifattach(ifp, FDDI_BPF_SUPPORTED); +#endif +} + +void +pdq_ifdetach (pdq_softc_t *sc) +{ + struct ifnet *ifp; + + ifp = &sc->arpcom.ac_if; + + fddi_ifdetach(ifp, FDDI_BPF_SUPPORTED); + pdq_stop(sc->sc_pdq); + pdq_free(sc->dev); + + return; +} + +void +pdq_free (device_t dev) +{ + pdq_softc_t *sc; + + sc = device_get_softc(dev); + + if (sc->io) + bus_release_resource(dev, sc->io_type, sc->io_rid, sc->io); + if (sc->mem) + bus_release_resource(dev, sc->mem_type, sc->mem_rid, sc->mem); + if (sc->irq_ih) + bus_teardown_intr(dev, sc->irq, sc->irq_ih); + if (sc->irq) + bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); + + /* + * Destroy the mutex. + */ + if (mtx_initialized(&sc->mtx) != 0) { + mtx_destroy(&sc->mtx); + } + + return; +} + +#if defined(PDQ_BUS_DMA) +int +pdq_os_memalloc_contig( + pdq_t *pdq) +{ + pdq_softc_t * const sc = pdq->pdq_os_ctx; + bus_dma_segment_t db_segs[1], ui_segs[1], cb_segs[1]; + int db_nsegs = 0, ui_nsegs = 0; + int steps = 0; + int not_ok; + + not_ok = bus_dmamem_alloc(sc->sc_dmatag, + sizeof(*pdq->pdq_dbp), sizeof(*pdq->pdq_dbp), + sizeof(*pdq->pdq_dbp), db_segs, 1, &db_nsegs, + BUS_DMA_NOWAIT); + if (!not_ok) { + steps = 1; + not_ok = bus_dmamem_map(sc->sc_dmatag, db_segs, db_nsegs, + sizeof(*pdq->pdq_dbp), (caddr_t *) &pdq->pdq_dbp, + BUS_DMA_NOWAIT); + } + if (!not_ok) { + steps = 2; + not_ok = bus_dmamap_create(sc->sc_dmatag, db_segs[0].ds_len, 1, + 0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_dbmap); + } + if (!not_ok) { + steps = 3; + not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_dbmap, + pdq->pdq_dbp, sizeof(*pdq->pdq_dbp), + NULL, BUS_DMA_NOWAIT); + } + if (!not_ok) { + steps = 4; + pdq->pdq_pa_descriptor_block = sc->sc_dbmap->dm_segs[0].ds_addr; + not_ok = bus_dmamem_alloc(sc->sc_dmatag, + PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE, PDQ_OS_PAGESIZE, + ui_segs, 1, &ui_nsegs, BUS_DMA_NOWAIT); + } + if (!not_ok) { + steps = 5; + not_ok = bus_dmamem_map(sc->sc_dmatag, ui_segs, ui_nsegs, + PDQ_OS_PAGESIZE, + (caddr_t *) &pdq->pdq_unsolicited_info.ui_events, + BUS_DMA_NOWAIT); + } + if (!not_ok) { + steps = 6; + not_ok = bus_dmamap_create(sc->sc_dmatag, ui_segs[0].ds_len, 1, + PDQ_OS_PAGESIZE, 0, BUS_DMA_NOWAIT, + &sc->sc_uimap); + } + if (!not_ok) { + steps = 7; + not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_uimap, + pdq->pdq_unsolicited_info.ui_events, + PDQ_OS_PAGESIZE, NULL, BUS_DMA_NOWAIT); + } + if (!not_ok) { + steps = 8; + pdq->pdq_unsolicited_info.ui_pa_bufstart = sc->sc_uimap->dm_segs[0].ds_addr; + cb_segs[0] = db_segs[0]; + cb_segs[0].ds_addr += offsetof(pdq_descriptor_block_t, pdqdb_consumer); + cb_segs[0].ds_len = sizeof(pdq_consumer_block_t); + not_ok = bus_dmamem_map(sc->sc_dmatag, cb_segs, 1, + sizeof(*pdq->pdq_cbp), (caddr_t *) &pdq->pdq_cbp, + BUS_DMA_NOWAIT|BUS_DMA_COHERENT); + } + if (!not_ok) { + steps = 9; + not_ok = bus_dmamap_create(sc->sc_dmatag, cb_segs[0].ds_len, 1, + 0x2000, 0, BUS_DMA_NOWAIT, &sc->sc_cbmap); + } + if (!not_ok) { + steps = 10; + not_ok = bus_dmamap_load(sc->sc_dmatag, sc->sc_cbmap, + (caddr_t) pdq->pdq_cbp, sizeof(*pdq->pdq_cbp), + NULL, BUS_DMA_NOWAIT); + } + if (!not_ok) { + pdq->pdq_pa_consumer_block = sc->sc_cbmap->dm_segs[0].ds_addr; + return not_ok; + } + + switch (steps) { + case 11: { + bus_dmamap_unload(sc->sc_dmatag, sc->sc_cbmap); + /* FALL THROUGH */ + } + case 10: { + bus_dmamap_destroy(sc->sc_dmatag, sc->sc_cbmap); + /* FALL THROUGH */ + } + case 9: { + bus_dmamem_unmap(sc->sc_dmatag, + (caddr_t) pdq->pdq_cbp, sizeof(*pdq->pdq_cbp)); + /* FALL THROUGH */ + } + case 8: { + bus_dmamap_unload(sc->sc_dmatag, sc->sc_uimap); + /* FALL THROUGH */ + } + case 7: { + bus_dmamap_destroy(sc->sc_dmatag, sc->sc_uimap); + /* FALL THROUGH */ + } + case 6: { + bus_dmamem_unmap(sc->sc_dmatag, + (caddr_t) pdq->pdq_unsolicited_info.ui_events, + PDQ_OS_PAGESIZE); + /* FALL THROUGH */ + } + case 5: { + bus_dmamem_free(sc->sc_dmatag, ui_segs, ui_nsegs); + /* FALL THROUGH */ + } + case 4: { + bus_dmamap_unload(sc->sc_dmatag, sc->sc_dbmap); + /* FALL THROUGH */ + } + case 3: { + bus_dmamap_destroy(sc->sc_dmatag, sc->sc_dbmap); + /* FALL THROUGH */ + } + case 2: { + bus_dmamem_unmap(sc->sc_dmatag, + (caddr_t) pdq->pdq_dbp, + sizeof(*pdq->pdq_dbp)); + /* FALL THROUGH */ + } + case 1: { + bus_dmamem_free(sc->sc_dmatag, db_segs, db_nsegs); + /* FALL THROUGH */ + } + } + + return not_ok; +} + +extern void +pdq_os_descriptor_block_sync( + pdq_os_ctx_t *sc, + size_t offset, + size_t length, + int ops) +{ + bus_dmamap_sync(sc->sc_dmatag, sc->sc_dbmap, offset, length, ops); +} + +extern void +pdq_os_consumer_block_sync( + pdq_os_ctx_t *sc, + int ops) +{ + bus_dmamap_sync(sc->sc_dmatag, sc->sc_cbmap, 0, sizeof(pdq_consumer_block_t), ops); +} + +extern void +pdq_os_unsolicited_event_sync( + pdq_os_ctx_t *sc, + size_t offset, + size_t length, + int ops) +{ + bus_dmamap_sync(sc->sc_dmatag, sc->sc_uimap, offset, length, ops); +} + +extern void +pdq_os_databuf_sync( + pdq_os_ctx_t *sc, + struct mbuf *m, + size_t offset, + size_t length, + int ops) +{ + bus_dmamap_sync(sc->sc_dmatag, M_GETCTX(m, bus_dmamap_t), offset, length, ops); +} + +extern void +pdq_os_databuf_free( + pdq_os_ctx_t *sc, + struct mbuf *m) +{ + if (m->m_flags & (M_HASRXDMAMAP|M_HASTXDMAMAP)) { + bus_dmamap_t map = M_GETCTX(m, bus_dmamap_t); + bus_dmamap_unload(sc->sc_dmatag, map); + bus_dmamap_destroy(sc->sc_dmatag, map); + m->m_flags &= ~(M_HASRXDMAMAP|M_HASTXDMAMAP); + } + m_freem(m); +} + +extern struct mbuf * +pdq_os_databuf_alloc( + pdq_os_ctx_t *sc) +{ + struct mbuf *m; + bus_dmamap_t map; + + MGETHDR(m, M_DONTWAIT, MT_DATA); + if (m == NULL) { + printf("%s: can't alloc small buf\n", sc->sc_dev.dv_xname); + return NULL; + } + MCLGET(m, M_DONTWAIT); + if ((m->m_flags & M_EXT) == 0) { + printf("%s: can't alloc cluster\n", sc->sc_dev.dv_xname); + m_free(m); + return NULL; + } + m->m_pkthdr.len = m->m_len = PDQ_OS_DATABUF_SIZE; + + if (bus_dmamap_create(sc->sc_dmatag, PDQ_OS_DATABUF_SIZE, + 1, PDQ_OS_DATABUF_SIZE, 0, BUS_DMA_NOWAIT, &map)) { + printf("%s: can't create dmamap\n", sc->sc_dev.dv_xname); + m_free(m); + return NULL; + } + if (bus_dmamap_load_mbuf(sc->sc_dmatag, map, m, + BUS_DMA_READ|BUS_DMA_NOWAIT)) { + printf("%s: can't load dmamap\n", sc->sc_dev.dv_xname); + bus_dmamap_destroy(sc->sc_dmatag, map); + m_free(m); + return NULL; + } + m->m_flags |= M_HASRXDMAMAP; + M_SETCTX(m, map); + return m; +} +#endif |
