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#include <machine/rtems-bsd-kernel-space.h>
/*-
* Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* This software was developed by SRI International and the University of
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
* ("CTSRD"), as part of the DARPA CRASH research programme.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Micrel KSZ9021 Gigabit Ethernet Transceiver
*/
#include <rtems/bsd/sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <net/if.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <rtems/bsd/local/miidevs.h>
#include <rtems/bsd/local/miibus_if.h>
#ifndef __rtems__
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#endif /* __rtems__ */
#define MII_KSZPHY_EXTREG 0x0b
#define KSZPHY_EXTREG_WRITE (1 << 15)
#define MII_KSZPHY_EXTREG_WRITE 0x0c
#define MII_KSZPHY_EXTREG_READ 0x0d
#define MII_KSZPHY_CLK_CONTROL_PAD_SKEW 0x104
#define MII_KSZPHY_RX_DATA_PAD_SKEW 0x105
#define MII_KSZPHY_TX_DATA_PAD_SKEW 0x106
#define PS_TO_REG(p) ((p) / 200)
static int micphy_probe(device_t);
static int micphy_attach(device_t);
static int micphy_service(struct mii_softc *, struct mii_data *, int);
static device_method_t micphy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, micphy_probe),
DEVMETHOD(device_attach, micphy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD_END
};
static devclass_t micphy_devclass;
static driver_t micphy_driver = {
"micphy",
micphy_methods,
sizeof(struct mii_softc)
};
DRIVER_MODULE(micphy, miibus, micphy_driver, micphy_devclass, 0, 0);
static const struct mii_phydesc micphys[] = {
MII_PHY_DESC(MICREL, KSZ9021),
MII_PHY_END
};
static const struct mii_phy_funcs micphy_funcs = {
micphy_service,
ukphy_status,
mii_phy_reset
};
static void
micphy_write(struct mii_softc *sc, uint32_t reg, uint32_t val)
{
PHY_WRITE(sc, MII_KSZPHY_EXTREG, KSZPHY_EXTREG_WRITE | reg);
PHY_WRITE(sc, MII_KSZPHY_EXTREG_WRITE, val);
}
#ifndef __rtems__
static int
ksz9021_load_values(struct mii_softc *sc, phandle_t node, uint32_t reg,
char *field1, char *field2,
char *field3, char *field4)
{
pcell_t dts_value[1];
int len;
int val;
val = 0;
if ((len = OF_getproplen(node, field1)) > 0) {
OF_getencprop(node, field1, dts_value, len);
val = PS_TO_REG(dts_value[0]);
}
if ((len = OF_getproplen(node, field2)) > 0) {
OF_getencprop(node, field2, dts_value, len);
val |= PS_TO_REG(dts_value[0]) << 4;
}
if ((len = OF_getproplen(node, field3)) > 0) {
OF_getencprop(node, field3, dts_value, len);
val |= PS_TO_REG(dts_value[0]) << 8;
}
if ((len = OF_getproplen(node, field4)) > 0) {
OF_getencprop(node, field4, dts_value, len);
val |= PS_TO_REG(dts_value[0]) << 12;
}
micphy_write(sc, reg, val);
return (0);
}
#endif /* __rtems__ */
static int
micphy_probe(device_t dev)
{
return (mii_phy_dev_probe(dev, micphys, BUS_PROBE_DEFAULT));
}
static int
micphy_attach(device_t dev)
{
struct mii_softc *sc;
#ifndef __rtems__
phandle_t node;
device_t miibus;
device_t parent;
#endif /* __rtems__ */
sc = device_get_softc(dev);
mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &micphy_funcs, 1);
mii_phy_setmedia(sc);
#ifndef __rtems__
miibus = device_get_parent(dev);
parent = device_get_parent(miibus);
if ((node = ofw_bus_get_node(parent)) == -1)
return (ENXIO);
ksz9021_load_values(sc, node, MII_KSZPHY_CLK_CONTROL_PAD_SKEW,
"txen-skew-ps", "txc-skew-ps",
"rxdv-skew-ps", "rxc-skew-ps");
ksz9021_load_values(sc, node, MII_KSZPHY_RX_DATA_PAD_SKEW,
"rxd0-skew-ps", "rxd1-skew-ps",
"rxd2-skew-ps", "rxd3-skew-ps");
ksz9021_load_values(sc, node, MII_KSZPHY_TX_DATA_PAD_SKEW,
"txd0-skew-ps", "txd1-skew-ps",
"txd2-skew-ps", "txd3-skew-ps");
#else /* __rtems__ */
/* FIXME */
micphy_write(sc, MII_KSZPHY_CLK_CONTROL_PAD_SKEW, 0xf0f0);
micphy_write(sc, MII_KSZPHY_RX_DATA_PAD_SKEW, 0x0000);
micphy_write(sc, MII_KSZPHY_TX_DATA_PAD_SKEW, 0x0000);
#endif /* __rtems__ */
return (0);
}
static int
micphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
switch (cmd) {
case MII_POLLSTAT:
break;
case MII_MEDIACHG:
mii_phy_setmedia(sc);
break;
case MII_TICK:
if (mii_phy_tick(sc) == EJUSTRETURN)
return (0);
break;
}
/* Update the media status. */
PHY_STATUS(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
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