freebsd-dev/sys/dev/etherswitch/arswitch/arswitch_8316.c
2012-05-12 20:39:41 +00:00

152 lines
4.4 KiB
C

/*-
* Copyright (c) 2011-2012 Stefan Bethke.
* Copyright (c) 2012 Adrian Chadd.
* 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <machine/bus.h>
#include <dev/iicbus/iic.h>
#include <dev/iicbus/iiconf.h>
#include <dev/iicbus/iicbus.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/etherswitch/mdio.h>
#include <dev/etherswitch/etherswitch.h>
#include <dev/etherswitch/arswitch/arswitchreg.h>
#include <dev/etherswitch/arswitch/arswitchvar.h>
#include <dev/etherswitch/arswitch/arswitch_reg.h>
#include <dev/etherswitch/arswitch/arswitch_8316.h>
#include "mdio_if.h"
#include "miibus_if.h"
#include "etherswitch_if.h"
/*
* AR8316 specific functions
*/
static int
ar8316_hw_setup(struct arswitch_softc *sc)
{
/*
* Configure the switch mode based on whether:
*
* + The switch port is GMII/RGMII;
* + Port 4 is either connected to the CPU or to the internal switch.
*/
if (sc->is_rgmii && sc->phy4cpu) {
arswitch_writereg(sc->sc_dev, AR8X16_REG_MODE,
AR8X16_MODE_RGMII_PORT4_ISO);
device_printf(sc->sc_dev,
"%s: MAC port == RGMII, port 4 = dedicated PHY\n",
__func__);
} else if (sc->is_rgmii) {
arswitch_writereg(sc->sc_dev, AR8X16_REG_MODE,
AR8X16_MODE_RGMII_PORT4_SWITCH);
device_printf(sc->sc_dev,
"%s: MAC port == RGMII, port 4 = switch port\n",
__func__);
} else if (sc->is_gmii) {
arswitch_writereg(sc->sc_dev, AR8X16_REG_MODE,
AR8X16_MODE_GMII);
device_printf(sc->sc_dev, "%s: MAC port == GMII\n", __func__);
} else {
device_printf(sc->sc_dev, "%s: unknown switch PHY config\n",
__func__);
return (ENXIO);
}
DELAY(1000); /* 1ms wait for things to settle */
/*
* If port 4 is RGMII, force workaround
*/
if (sc->is_rgmii && sc->phy4cpu) {
device_printf(sc->sc_dev,
"%s: port 4 RGMII workaround\n",
__func__);
/* work around for phy4 rgmii mode */
arswitch_writedbg(sc->sc_dev, 4, 0x12, 0x480c);
/* rx delay */
arswitch_writedbg(sc->sc_dev, 4, 0x0, 0x824e);
/* tx delay */
arswitch_writedbg(sc->sc_dev, 4, 0x5, 0x3d47);
DELAY(1000); /* 1ms, again to let things settle */
}
return (0);
}
/*
* Initialise other global values, for the AR8316.
*/
static int
ar8316_hw_global_setup(struct arswitch_softc *sc)
{
arswitch_writereg(sc->sc_dev, 0x38, 0xc000050e);
/*
* Flood address table misses to all ports, and enable forwarding of
* broadcasts to the cpu port.
*/
arswitch_writereg(sc->sc_dev, AR8X16_REG_FLOOD_MASK,
AR8X16_FLOOD_MASK_BCAST_TO_CPU | 0x003f003f);
arswitch_modifyreg(sc->sc_dev, AR8X16_REG_GLOBAL_CTRL,
AR8316_GLOBAL_CTRL_MTU_MASK, 9018 + 8 + 2);
return (0);
}
void
ar8316_attach(struct arswitch_softc *sc)
{
sc->hal.arswitch_hw_setup = ar8316_hw_setup;
sc->hal.arswitch_hw_global_setup = ar8316_hw_global_setup;
}