2a8c860fe3
socket-buffer implementations, introduce a return value for MCLGET() (and m_cljget() that underlies it) to allow the caller to avoid testing M_EXT itself. Update all callers to use the return value. With this change, very few network device drivers remain aware of M_EXT; the primary exceptions lie in mbuf-chain pretty printers for debugging, and in a few cases, custom mbuf and cluster allocation implementations. NB: This is a difficult-to-test change as it touches many drivers for which I don't have physical devices. Instead we've gone for intensive review, but further post-commit review would definitely be appreciated to spot errors where changes could not easily be made mechanically, but were largely mechanical in nature. Differential Revision: https://reviews.freebsd.org/D1440 Reviewed by: adrian, bz, gnn Sponsored by: EMC / Isilon Storage Division
776 lines
19 KiB
C
776 lines
19 KiB
C
/* $NetBSD: pdq_ifsubr.c,v 1.38 2001/12/21 23:21:47 matt Exp $ */
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/*-
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* Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: pdq_ifsubr.c,v 1.12 1997/06/05 01:56:35 thomas Exp$
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* DEC PDQ FDDI Controller; code for BSD derived operating systems
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*
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* This module provide bus independent BSD specific O/S functions.
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* (ie. it provides an ifnet interface to the rest of the system)
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*/
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#define PDQ_OSSUPPORT
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/malloc.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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#include <net/fddi.h>
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#include <net/bpf.h>
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#include <dev/pdq/pdq_freebsd.h>
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#include <dev/pdq/pdqreg.h>
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devclass_t pdq_devclass;
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static void pdq_watchdog(void *);
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static void
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pdq_ifstop(pdq_softc_t *sc)
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{
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PDQ_IFNET(sc)->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
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sc->sc_pdq->pdq_flags &= ~PDQ_RUNNING;
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pdq_stop(sc->sc_pdq);
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callout_stop(&sc->watchdog);
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}
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static void
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pdq_ifinit_locked(pdq_softc_t *sc)
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{
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PDQ_LOCK_ASSERT(sc);
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if (PDQ_IFNET(sc)->if_flags & IFF_UP) {
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PDQ_IFNET(sc)->if_drv_flags |= IFF_DRV_RUNNING;
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if (PDQ_IFNET(sc)->if_flags & IFF_PROMISC) {
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sc->sc_pdq->pdq_flags |= PDQ_PROMISC;
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} else {
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sc->sc_pdq->pdq_flags &= ~PDQ_PROMISC;
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}
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if (PDQ_IFNET(sc)->if_flags & IFF_LINK1) {
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sc->sc_pdq->pdq_flags |= PDQ_PASS_SMT;
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} else {
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sc->sc_pdq->pdq_flags &= ~PDQ_PASS_SMT;
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}
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sc->sc_pdq->pdq_flags |= PDQ_RUNNING;
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pdq_run(sc->sc_pdq);
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callout_reset(&sc->watchdog, hz, pdq_watchdog, sc);
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} else
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pdq_ifstop(sc);
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}
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static void
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pdq_ifinit(void *arg)
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{
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pdq_softc_t *sc;
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sc = arg;
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PDQ_LOCK(sc);
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pdq_ifinit_locked(sc);
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PDQ_UNLOCK(sc);
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}
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static void
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pdq_watchdog(void *arg)
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{
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pdq_softc_t *sc;
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struct ifnet *ifp;
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sc = arg;
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PDQ_LOCK_ASSERT(sc);
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callout_reset(&sc->watchdog, hz, pdq_watchdog, sc);
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if (sc->timer == 0 || --sc->timer > 0)
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return;
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/*
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* No progress was made on the transmit queue for PDQ_OS_TX_TRANSMIT
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* seconds. Remove all queued packets.
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*/
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ifp = PDQ_IFNET(sc);
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ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
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for (;;) {
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struct mbuf *m;
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IFQ_DEQUEUE(&ifp->if_snd, m);
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if (m == NULL)
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return;
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PDQ_OS_DATABUF_FREE(PDQ_OS_IFP_TO_SOFTC(ifp)->sc_pdq, m);
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}
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}
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static void
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pdq_ifstart_locked(struct ifnet *ifp)
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{
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pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
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struct mbuf *m;
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int tx = 0;
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PDQ_LOCK_ASSERT(sc);
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if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
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return;
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if (sc->timer == 0)
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sc->timer = PDQ_OS_TX_TIMEOUT;
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if ((sc->sc_pdq->pdq_flags & PDQ_TXOK) == 0) {
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PDQ_IFNET(sc)->if_drv_flags |= IFF_DRV_OACTIVE;
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return;
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}
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sc->sc_flags |= PDQIF_DOWNCALL;
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for (;; tx = 1) {
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IF_DEQUEUE(&ifp->if_snd, m);
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if (m == NULL)
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break;
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#if defined(PDQ_BUS_DMA) && !defined(PDQ_BUS_DMA_NOTX)
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if ((m->m_flags & M_HASTXDMAMAP) == 0) {
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bus_dmamap_t map;
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if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) {
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m->m_data[0] = PDQ_FDDI_PH0;
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m->m_data[1] = PDQ_FDDI_PH1;
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m->m_data[2] = PDQ_FDDI_PH2;
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}
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if (!bus_dmamap_create(sc->sc_dmatag, m->m_pkthdr.len, 255,
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m->m_pkthdr.len, 0, BUS_DMA_NOWAIT, &map)) {
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if (!bus_dmamap_load_mbuf(sc->sc_dmatag, map, m,
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BUS_DMA_WRITE|BUS_DMA_NOWAIT)) {
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bus_dmamap_sync(sc->sc_dmatag, map, 0, m->m_pkthdr.len,
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BUS_DMASYNC_PREWRITE);
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M_SETCTX(m, map);
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m->m_flags |= M_HASTXDMAMAP;
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}
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}
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if ((m->m_flags & M_HASTXDMAMAP) == 0)
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break;
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}
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#else
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if (PDQ_OS_HDR_OFFSET != PDQ_RX_FC_OFFSET) {
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m->m_data[0] = PDQ_FDDI_PH0;
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m->m_data[1] = PDQ_FDDI_PH1;
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m->m_data[2] = PDQ_FDDI_PH2;
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}
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#endif
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if (pdq_queue_transmit_data(sc->sc_pdq, m) == PDQ_FALSE)
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break;
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}
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if (m != NULL) {
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ifp->if_drv_flags |= IFF_DRV_OACTIVE;
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IF_PREPEND(&ifp->if_snd, m);
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}
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if (tx)
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PDQ_DO_TYPE2_PRODUCER(sc->sc_pdq);
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sc->sc_flags &= ~PDQIF_DOWNCALL;
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}
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static void
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pdq_ifstart(struct ifnet *ifp)
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{
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pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
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PDQ_LOCK(sc);
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pdq_ifstart_locked(ifp);
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PDQ_UNLOCK(sc);
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}
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void
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pdq_os_receive_pdu(
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pdq_t *pdq,
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struct mbuf *m,
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size_t pktlen,
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int drop)
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{
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pdq_softc_t *sc = pdq->pdq_os_ctx;
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struct ifnet *ifp = PDQ_IFNET(sc);
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struct fddi_header *fh;
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if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
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#if defined(PDQ_BUS_DMA)
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{
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/*
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* Even though the first mbuf start at the first fddi header octet,
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* the dmamap starts PDQ_OS_HDR_OFFSET octets earlier. Any additional
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* mbufs will start normally.
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*/
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int offset = PDQ_OS_HDR_OFFSET;
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struct mbuf *m0;
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for (m0 = m; m0 != NULL; m0 = m0->m_next, offset = 0) {
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pdq_os_databuf_sync(sc, m0, offset, m0->m_len, BUS_DMASYNC_POSTREAD);
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bus_dmamap_unload(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t));
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bus_dmamap_destroy(sc->sc_dmatag, M_GETCTX(m0, bus_dmamap_t));
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m0->m_flags &= ~M_HASRXDMAMAP;
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M_SETCTX(m0, NULL);
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}
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}
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#endif
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m->m_pkthdr.len = pktlen;
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fh = mtod(m, struct fddi_header *);
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if (drop || (fh->fddi_fc & (FDDIFC_L|FDDIFC_F)) != FDDIFC_LLC_ASYNC) {
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if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
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if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
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PDQ_OS_DATABUF_FREE(pdq, m);
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return;
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}
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m->m_pkthdr.rcvif = ifp;
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PDQ_UNLOCK(sc);
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(*ifp->if_input)(ifp, m);
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PDQ_LOCK(sc);
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}
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void
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pdq_os_restart_transmitter(
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pdq_t *pdq)
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{
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pdq_softc_t *sc = pdq->pdq_os_ctx;
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PDQ_IFNET(sc)->if_drv_flags &= ~IFF_DRV_OACTIVE;
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if (IFQ_IS_EMPTY(&PDQ_IFNET(sc)->if_snd) == 0) {
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sc->timer = PDQ_OS_TX_TIMEOUT;
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if ((sc->sc_flags & PDQIF_DOWNCALL) == 0)
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pdq_ifstart_locked(PDQ_IFNET(sc));
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} else {
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sc->timer = 0;
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}
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}
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void
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pdq_os_transmit_done(
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pdq_t *pdq,
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struct mbuf *m)
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{
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pdq_softc_t *sc = pdq->pdq_os_ctx;
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#if defined(NBPFILTER) && NBPFILTER > 0
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if (PQD_IFNET(sc)->if_bpf != NULL)
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PDQ_BPF_MTAP(sc, m);
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#endif
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PDQ_OS_DATABUF_FREE(pdq, m);
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if_inc_counter(PDQ_IFNET(sc), IFCOUNTER_OPACKETS, 1);
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}
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void
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pdq_os_addr_fill(
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pdq_t *pdq,
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pdq_lanaddr_t *addr,
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size_t num_addrs)
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{
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pdq_softc_t *sc = pdq->pdq_os_ctx;
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struct ifnet *ifp;
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struct ifmultiaddr *ifma;
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ifp = sc->ifp;
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/*
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* ADDR_FILTER_SET is always issued before FILTER_SET so
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* we can play with PDQ_ALLMULTI and not worry about
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* queueing a FILTER_SET ourselves.
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*/
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pdq->pdq_flags &= ~PDQ_ALLMULTI;
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#if defined(IFF_ALLMULTI)
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PDQ_IFNET(sc)->if_flags &= ~IFF_ALLMULTI;
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#endif
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if_maddr_rlock(PDQ_IFNET(sc));
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for (ifma = TAILQ_FIRST(&PDQ_IFNET(sc)->if_multiaddrs); ifma && num_addrs > 0;
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ifma = TAILQ_NEXT(ifma, ifma_link)) {
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char *mcaddr;
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if (ifma->ifma_addr->sa_family != AF_LINK)
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continue;
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mcaddr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
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((u_short *) addr->lanaddr_bytes)[0] = ((u_short *) mcaddr)[0];
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((u_short *) addr->lanaddr_bytes)[1] = ((u_short *) mcaddr)[1];
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((u_short *) addr->lanaddr_bytes)[2] = ((u_short *) mcaddr)[2];
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addr++;
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num_addrs--;
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}
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if_maddr_runlock(PDQ_IFNET(sc));
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/*
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* If not all the address fit into the CAM, turn on all-multicast mode.
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*/
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if (ifma != NULL) {
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pdq->pdq_flags |= PDQ_ALLMULTI;
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#if defined(IFF_ALLMULTI)
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PDQ_IFNET(sc)->if_flags |= IFF_ALLMULTI;
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#endif
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}
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}
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#if defined(IFM_FDDI)
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static int
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pdq_ifmedia_change(
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struct ifnet *ifp)
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{
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pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
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PDQ_LOCK(sc);
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if (sc->sc_ifmedia.ifm_media & IFM_FDX) {
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if ((sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) == 0) {
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sc->sc_pdq->pdq_flags |= PDQ_WANT_FDX;
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if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
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pdq_run(sc->sc_pdq);
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}
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} else if (sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) {
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sc->sc_pdq->pdq_flags &= ~PDQ_WANT_FDX;
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if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
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pdq_run(sc->sc_pdq);
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}
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PDQ_UNLOCK(sc);
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return 0;
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}
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static void
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pdq_ifmedia_status(
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struct ifnet *ifp,
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struct ifmediareq *ifmr)
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{
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pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
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PDQ_LOCK(sc);
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ifmr->ifm_status = IFM_AVALID;
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if (sc->sc_pdq->pdq_flags & PDQ_IS_ONRING)
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ifmr->ifm_status |= IFM_ACTIVE;
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ifmr->ifm_active = (ifmr->ifm_current & ~IFM_FDX);
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if (sc->sc_pdq->pdq_flags & PDQ_IS_FDX)
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ifmr->ifm_active |= IFM_FDX;
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PDQ_UNLOCK(sc);
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}
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void
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pdq_os_update_status(
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pdq_t *pdq,
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const void *arg)
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{
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pdq_softc_t * const sc = pdq->pdq_os_ctx;
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const pdq_response_status_chars_get_t *rsp = arg;
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int media = 0;
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switch (rsp->status_chars_get.pmd_type[0]) {
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case PDQ_PMD_TYPE_ANSI_MUTLI_MODE: media = IFM_FDDI_MMF; break;
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case PDQ_PMD_TYPE_ANSI_SINGLE_MODE_TYPE_1: media = IFM_FDDI_SMF; break;
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case PDQ_PMD_TYPE_ANSI_SIGNLE_MODE_TYPE_2: media = IFM_FDDI_SMF; break;
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case PDQ_PMD_TYPE_UNSHIELDED_TWISTED_PAIR: media = IFM_FDDI_UTP; break;
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default: media |= IFM_MANUAL;
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}
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if (rsp->status_chars_get.station_type == PDQ_STATION_TYPE_DAS)
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media |= IFM_FDDI_DA;
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sc->sc_ifmedia.ifm_media = media | IFM_FDDI;
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}
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#endif /* defined(IFM_FDDI) */
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static int
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pdq_ifioctl(
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struct ifnet *ifp,
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u_long cmd,
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caddr_t data)
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{
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pdq_softc_t *sc = PDQ_OS_IFP_TO_SOFTC(ifp);
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int error = 0;
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switch (cmd) {
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case SIOCSIFFLAGS: {
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pdq_ifinit(sc);
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break;
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}
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case SIOCADDMULTI:
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case SIOCDELMULTI: {
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PDQ_LOCK(sc);
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if (PDQ_IFNET(sc)->if_drv_flags & IFF_DRV_RUNNING) {
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pdq_run(sc->sc_pdq);
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error = 0;
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}
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PDQ_UNLOCK(sc);
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break;
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}
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#if defined(IFM_FDDI) && defined(SIOCSIFMEDIA)
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case SIOCSIFMEDIA:
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case SIOCGIFMEDIA: {
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struct ifreq *ifr = (struct ifreq *)data;
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error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd);
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break;
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}
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#endif
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default: {
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error = fddi_ioctl(ifp, cmd, data);
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break;
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}
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}
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return error;
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}
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#ifndef IFF_NOTRAILERS
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#define IFF_NOTRAILERS 0
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#endif
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int
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pdq_ifattach(pdq_softc_t *sc, const pdq_uint8_t *llc, pdq_type_t type)
|
||
{
|
||
struct ifnet *ifp;
|
||
|
||
ifp = PDQ_IFNET(sc) = if_alloc(IFT_FDDI);
|
||
if (ifp == NULL) {
|
||
device_printf(sc->dev, "can not if_alloc()\n");
|
||
return (ENOSPC);
|
||
}
|
||
|
||
mtx_init(&sc->mtx, device_get_nameunit(sc->dev), MTX_NETWORK_LOCK,
|
||
MTX_DEF);
|
||
callout_init_mtx(&sc->watchdog, &sc->mtx, 0);
|
||
|
||
if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev));
|
||
ifp->if_softc = sc;
|
||
ifp->if_init = pdq_ifinit;
|
||
ifp->if_snd.ifq_maxlen = ifqmaxlen;
|
||
ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;
|
||
|
||
ifp->if_ioctl = pdq_ifioctl;
|
||
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
|
||
|
||
sc->sc_pdq = pdq_initialize(sc->mem_bst, sc->mem_bsh, ifp->if_xname, -1,
|
||
sc, type);
|
||
if (sc->sc_pdq == NULL) {
|
||
device_printf(sc->dev, "Initialization failed.\n");
|
||
return (ENXIO);
|
||
}
|
||
|
||
fddi_ifattach(ifp, llc, FDDI_BPF_SUPPORTED);
|
||
return (0);
|
||
}
|
||
|
||
void
|
||
pdq_ifdetach (pdq_softc_t *sc)
|
||
{
|
||
struct ifnet *ifp;
|
||
|
||
ifp = sc->ifp;
|
||
|
||
fddi_ifdetach(ifp, FDDI_BPF_SUPPORTED);
|
||
PDQ_LOCK(sc);
|
||
pdq_ifstop(sc);
|
||
PDQ_UNLOCK(sc);
|
||
callout_drain(&sc->watchdog);
|
||
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);
|
||
if (sc->ifp)
|
||
if_free(sc->ifp);
|
||
|
||
/*
|
||
* 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_NOWAIT, MT_DATA);
|
||
if (m == NULL) {
|
||
printf("%s: can't alloc small buf\n", sc->sc_dev.dv_xname);
|
||
return NULL;
|
||
}
|
||
if (!(MCLGET(m, M_NOWAIT))) {
|
||
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
|