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https://git.FreeBSD.org/src.git
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412 lines
9.7 KiB
C
412 lines
9.7 KiB
C
/*
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* Copyright (c) 2003
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* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
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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. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Author: Hartmut Brandt <harti@freebsd.org>
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*
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* Driver for IDT77252 based cards like ProSum's.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_inet.h"
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#include "opt_natm.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/errno.h>
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#include <sys/conf.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/sysctl.h>
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#include <sys/queue.h>
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#include <sys/condvar.h>
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#include <vm/uma.h>
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#include <sys/sockio.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/if_atm.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/if_atm.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/mbpool.h>
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#include <dev/utopia/utopia.h>
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#include <dev/patm/idt77252reg.h>
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#include <dev/patm/if_patmvar.h>
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/*
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* Open the VCC with the given parameters
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*/
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static int
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patm_open_vcc(struct patm_softc *sc, struct atmio_openvcc *arg)
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{
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u_int cid;
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struct patm_vcc *vcc;
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int error = 0;
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patm_debug(sc, VCC, "Open VCC: %u.%u flags=%#x", arg->param.vpi,
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arg->param.vci, arg->param.flags);
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if (!LEGAL_VPI(sc, arg->param.vpi) || !LEGAL_VCI(sc, arg->param.vci))
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return (EINVAL);
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if (arg->param.vci == 0 && (arg->param.vpi != 0 ||
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!(arg->param.flags & ATMIO_FLAG_NOTX) ||
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arg->param.aal != ATMIO_AAL_RAW))
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return (EINVAL);
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cid = PATM_CID(sc, arg->param.vpi, arg->param.vci);
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if ((arg->param.flags & ATMIO_FLAG_NOTX) &&
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(arg->param.flags & ATMIO_FLAG_NORX))
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return (EINVAL);
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if ((arg->param.traffic == ATMIO_TRAFFIC_ABR) &&
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(arg->param.flags & (ATMIO_FLAG_NOTX | ATMIO_FLAG_NORX)))
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return (EINVAL);
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/* allocate vcc */
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vcc = uma_zalloc(sc->vcc_zone, M_NOWAIT | M_ZERO);
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if (vcc == NULL)
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return (ENOMEM);
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mtx_lock(&sc->mtx);
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if (!(sc->ifatm.ifnet.if_flags & IFF_RUNNING)) {
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/* stopped while we have analyzed the arguments */
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error = EIO;
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goto done;
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}
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if (sc->vccs[cid] != NULL) {
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/* ups, already open */
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error = EBUSY;
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goto done;
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}
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/* check some parameters */
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vcc->cid = cid;
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vcc->vcc = arg->param;
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vcc->vflags = 0;
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vcc->rxhand = arg->rxhand;
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switch (vcc->vcc.aal) {
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case ATMIO_AAL_0:
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case ATMIO_AAL_34:
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case ATMIO_AAL_5:
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break;
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case ATMIO_AAL_RAW:
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if (arg->param.vci == 0 &&
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!(arg->param.flags & ATMIO_FLAG_NOTX)) {
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error = EINVAL;
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goto done;
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}
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break;
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default:
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error = EINVAL;
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goto done;
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}
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switch (vcc->vcc.traffic) {
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case ATMIO_TRAFFIC_VBR:
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case ATMIO_TRAFFIC_UBR:
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case ATMIO_TRAFFIC_CBR:
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case ATMIO_TRAFFIC_ABR:
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break;
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default:
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error = EINVAL;
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goto done;
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}
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/* initialize */
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vcc->chain = NULL;
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vcc->last = NULL;
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vcc->ibytes = vcc->ipackets = 0;
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vcc->obytes = vcc->opackets = 0;
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/* ask the TX and RX sides */
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patm_debug(sc, VCC, "Open VCC: asking Rx/Tx");
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if (!(vcc->vcc.flags & ATMIO_FLAG_NOTX) &&
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(error = patm_tx_vcc_can_open(sc, vcc)) != 0)
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goto done;
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if (!(vcc->vcc.flags & ATMIO_FLAG_NORX) &&
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(error = patm_rx_vcc_can_open(sc, vcc)) != 0)
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goto done;
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/* ok - go ahead */
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sc->vccs[cid] = vcc;
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patm_load_vc(sc, vcc, 0);
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/* don't free below */
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vcc = NULL;
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sc->vccs_open++;
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/* done */
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done:
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mtx_unlock(&sc->mtx);
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if (vcc != NULL)
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uma_zfree(sc->vcc_zone, vcc);
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return (error);
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}
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void
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patm_load_vc(struct patm_softc *sc, struct patm_vcc *vcc, int reload)
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{
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patm_debug(sc, VCC, "Open VCC: opening");
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if (!(vcc->vcc.flags & ATMIO_FLAG_NOTX))
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patm_tx_vcc_open(sc, vcc);
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if (!(vcc->vcc.flags & ATMIO_FLAG_NORX))
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patm_rx_vcc_open(sc, vcc);
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if (!reload) {
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/* inform management about non-NG and NG-PVCs */
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if (!(vcc->vcc.flags & ATMIO_FLAG_NG) ||
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(vcc->vcc.flags & ATMIO_FLAG_PVC))
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ATMEV_SEND_VCC_CHANGED(&sc->ifatm, vcc->vcc.vpi,
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vcc->vcc.vci, 1);
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}
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patm_debug(sc, VCC, "Open VCC: now open");
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}
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/*
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* Try to close the given VCC
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*/
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static int
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patm_close_vcc(struct patm_softc *sc, struct atmio_closevcc *arg)
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{
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u_int cid;
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struct patm_vcc *vcc;
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int error = 0;
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patm_debug(sc, VCC, "Close VCC: %u.%u", arg->vpi, arg->vci);
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if (!LEGAL_VPI(sc, arg->vpi) || !LEGAL_VCI(sc, arg->vci))
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return (EINVAL);
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cid = PATM_CID(sc, arg->vpi, arg->vci);
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mtx_lock(&sc->mtx);
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if (!(sc->ifatm.ifnet.if_flags & IFF_RUNNING)) {
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/* stopped while we have analyzed the arguments */
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error = EIO;
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goto done;
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}
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vcc = sc->vccs[cid];
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if (vcc == NULL || !(vcc->vflags & PATM_VCC_OPEN)) {
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error = ENOENT;
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goto done;
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}
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if (vcc->vflags & PATM_VCC_TX_OPEN)
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patm_tx_vcc_close(sc, vcc);
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if (vcc->vflags & PATM_VCC_RX_OPEN)
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patm_rx_vcc_close(sc, vcc);
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if (vcc->vcc.flags & ATMIO_FLAG_ASYNC)
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goto done;
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while (vcc->vflags & (PATM_VCC_TX_CLOSING | PATM_VCC_RX_CLOSING)) {
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cv_wait(&sc->vcc_cv, &sc->mtx);
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if (!(sc->ifatm.ifnet.if_flags & IFF_RUNNING)) {
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/* ups, has been stopped */
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error = EIO;
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goto done;
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}
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}
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if (!(vcc->vcc.flags & ATMIO_FLAG_NOTX))
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patm_tx_vcc_closed(sc, vcc);
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if (!(vcc->vcc.flags & ATMIO_FLAG_NORX))
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patm_rx_vcc_closed(sc, vcc);
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patm_vcc_closed(sc, vcc);
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done:
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mtx_unlock(&sc->mtx);
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return (error);
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}
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/*
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* VCC has been finally closed.
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*/
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void
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patm_vcc_closed(struct patm_softc *sc, struct patm_vcc *vcc)
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{
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/* inform management about non-NG and NG-PVCs */
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if (!(vcc->vcc.flags & ATMIO_FLAG_NG) ||
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(vcc->vcc.flags & ATMIO_FLAG_PVC))
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ATMEV_SEND_VCC_CHANGED(&sc->ifatm, vcc->vcc.vpi,
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vcc->vcc.vci, 0);
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sc->vccs_open--;
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sc->vccs[vcc->cid] = NULL;
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uma_zfree(sc->vcc_zone, vcc);
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}
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int
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patm_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
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{
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struct ifreq *ifr = (struct ifreq *)data;
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struct ifaddr *ifa = (struct ifaddr *)data;
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struct patm_softc *sc = ifp->if_softc;
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int error = 0;
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uint32_t cfg;
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struct atmio_vcctable *vtab;
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switch (cmd) {
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case SIOCSIFADDR:
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mtx_lock(&sc->mtx);
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ifp->if_flags |= IFF_UP;
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if (!(ifp->if_flags & IFF_RUNNING))
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patm_initialize(sc);
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switch (ifa->ifa_addr->sa_family) {
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#ifdef INET
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case AF_INET:
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case AF_INET6:
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ifa->ifa_rtrequest = atm_rtrequest;
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break;
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#endif
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default:
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break;
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}
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mtx_unlock(&sc->mtx);
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break;
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case SIOCSIFFLAGS:
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mtx_lock(&sc->mtx);
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if (ifp->if_flags & IFF_UP) {
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if (!(ifp->if_flags & IFF_RUNNING)) {
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patm_initialize(sc);
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}
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} else {
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if (ifp->if_flags & IFF_RUNNING) {
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patm_stop(sc);
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}
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}
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mtx_unlock(&sc->mtx);
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break;
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case SIOCGIFMEDIA:
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case SIOCSIFMEDIA:
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error = ifmedia_ioctl(ifp, ifr, &sc->media, cmd);
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/*
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* We need to toggle unassigned/idle cells ourself because
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* the 77252 generates null cells for spacing. When switching
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* null cells of it gets the timing wrong.
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*/
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mtx_lock(&sc->mtx);
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if (ifp->if_flags & IFF_RUNNING) {
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if (sc->utopia.state & UTP_ST_UNASS) {
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if (!(sc->flags & PATM_UNASS)) {
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cfg = patm_nor_read(sc, IDT_NOR_CFG);
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cfg &= ~IDT_CFG_IDLECLP;
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patm_nor_write(sc, IDT_NOR_CFG, cfg);
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sc->flags |= PATM_UNASS;
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}
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} else {
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if (sc->flags & PATM_UNASS) {
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cfg = patm_nor_read(sc, IDT_NOR_CFG);
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cfg |= IDT_CFG_IDLECLP;
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patm_nor_write(sc, IDT_NOR_CFG, cfg);
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sc->flags &= ~PATM_UNASS;
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}
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}
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} else {
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if (sc->utopia.state & UTP_ST_UNASS)
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sc->flags |= PATM_UNASS;
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else
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sc->flags &= ~PATM_UNASS;
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}
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mtx_unlock(&sc->mtx);
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break;
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case SIOCSIFMTU:
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/*
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* Set the interface MTU.
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*/
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if (ifr->ifr_mtu > ATMMTU)
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error = EINVAL;
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else
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ifp->if_mtu = ifr->ifr_mtu;
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break;
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case SIOCATMOPENVCC: /* kernel internal use */
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error = patm_open_vcc(sc, (struct atmio_openvcc *)data);
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break;
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case SIOCATMCLOSEVCC: /* kernel internal use */
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error = patm_close_vcc(sc, (struct atmio_closevcc *)data);
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break;
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case SIOCATMGVCCS: /* external use */
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/* return vcc table */
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vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
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sc->mmap->max_conn, sc->vccs_open, &sc->mtx, 1);
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error = copyout(vtab, ifr->ifr_data, sizeof(*vtab) +
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vtab->count * sizeof(vtab->vccs[0]));
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free(vtab, M_DEVBUF);
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break;
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case SIOCATMGETVCCS: /* netgraph internal use */
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vtab = atm_getvccs((struct atmio_vcc **)sc->vccs,
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sc->mmap->max_conn, sc->vccs_open, &sc->mtx, 0);
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if (vtab == NULL) {
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error = ENOMEM;
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break;
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}
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*(void **)data = vtab;
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break;
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default:
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patm_debug(sc, IOCTL, "unknown cmd=%08lx arg=%p", cmd, data);
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error = EINVAL;
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break;
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}
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return (error);
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}
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