diff options
Diffstat (limited to 'freebsd/sys/dev/mii/micphy.c')
| -rw-r--r-- | freebsd/sys/dev/mii/micphy.c | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/freebsd/sys/dev/mii/micphy.c b/freebsd/sys/dev/mii/micphy.c new file mode 100644 index 00000000..77e123c5 --- /dev/null +++ b/freebsd/sys/dev/mii/micphy.c @@ -0,0 +1,226 @@ +#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"); +#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); +} |