6d011946c5
arswitch_setled() and a number of _global_setup functions did not acquire the
lock before calling arswitch_modifyreg(). With WITNESS enabled this would
instantly panic.
Discovered on a TPLink-3600:
("panic: mutex arswitch not owned at sys/dev/etherswitch/arswitch/arswitch_reg.c:236")
Reviewed by: adrian, kan
Differential Revision: https://reviews.freebsd.org/D9187
148 lines
4.0 KiB
C
148 lines
4.0 KiB
C
/*-
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* Copyright (c) 2011-2012 Stefan Bethke.
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* Copyright (c) 2012 Adrian Chadd.
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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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/errno.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/ethernet.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 <machine/bus.h>
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#include <dev/iicbus/iic.h>
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#include <dev/iicbus/iiconf.h>
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#include <dev/iicbus/iicbus.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/mdio/mdio.h>
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#include <dev/etherswitch/etherswitch.h>
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#include <dev/etherswitch/arswitch/arswitchreg.h>
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#include <dev/etherswitch/arswitch/arswitchvar.h>
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#include <dev/etherswitch/arswitch/arswitch_reg.h>
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#include <dev/etherswitch/arswitch/arswitch_phy.h> /* XXX for probe */
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#include <dev/etherswitch/arswitch/arswitch_7240.h>
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#include "mdio_if.h"
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#include "miibus_if.h"
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#include "etherswitch_if.h"
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/*
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* AR7240 specific functions
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*/
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static int
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ar7240_hw_setup(struct arswitch_softc *sc)
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{
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return (0);
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}
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/*
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* Initialise other global values for the AR7240.
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*/
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static int
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ar7240_hw_global_setup(struct arswitch_softc *sc)
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{
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ARSWITCH_LOCK(sc);
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/* Enable CPU port; disable mirror port */
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arswitch_writereg(sc->sc_dev, AR8X16_REG_CPU_PORT,
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AR8X16_CPU_PORT_EN | AR8X16_CPU_MIRROR_DIS);
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/* Setup TAG priority mapping */
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arswitch_writereg(sc->sc_dev, AR8X16_REG_TAG_PRIO, 0xfa50);
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/* Enable broadcast frames transmitted to the CPU */
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arswitch_writereg(sc->sc_dev, AR8X16_REG_FLOOD_MASK,
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AR8X16_FLOOD_MASK_BCAST_TO_CPU | 0x003f003f);
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/* Setup MTU */
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arswitch_modifyreg(sc->sc_dev, AR8X16_REG_GLOBAL_CTRL,
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AR7240_GLOBAL_CTRL_MTU_MASK,
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SM(1536, AR7240_GLOBAL_CTRL_MTU_MASK));
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/* XXX ARP? Frame Age enable? */
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/* Service Tag */
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arswitch_modifyreg(sc->sc_dev, AR8X16_REG_SERVICE_TAG,
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AR8X16_SERVICE_TAG_MASK, 0);
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ARSWITCH_UNLOCK(sc);
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return (0);
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}
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/*
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* The AR7240 probes the same as the AR8216.
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*
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* However, the support is slightly different.
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*
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* So instead of checking the PHY revision or mask register contents,
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* we simply fall back to a hint check.
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*/
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int
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ar7240_probe(device_t dev)
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{
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int is_7240 = 0;
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if (resource_int_value(device_get_name(dev), device_get_unit(dev),
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"is_7240", &is_7240) != 0)
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return (ENXIO);
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if (is_7240 == 0)
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return (ENXIO);
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return (0);
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}
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void
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ar7240_attach(struct arswitch_softc *sc)
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{
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sc->hal.arswitch_hw_setup = ar7240_hw_setup;
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sc->hal.arswitch_hw_global_setup = ar7240_hw_global_setup;
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/* Set the switch vlan capabilities. */
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sc->info.es_vlan_caps = ETHERSWITCH_VLAN_DOT1Q |
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ETHERSWITCH_VLAN_PORT | ETHERSWITCH_VLAN_DOUBLE_TAG;
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sc->info.es_nvlangroups = AR8X16_MAX_VLANS;
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}
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