From 61575f5c4436bc1281d7589c328fb933e93a5942 Mon Sep 17 00:00:00 2001 From: Christian Mauderer Date: Thu, 20 Sep 2018 14:27:17 +0200 Subject: Add PHY-driver for KSZ8091RNB with 50MHz. This adds a driver for the KSZ8091RNB PHY. This PHY needs some special treatment if it is clocked with a 50MHz clock. --- rtemsbsd/sys/dev/mii/ksz8091rnb_50MHz.c | 186 ++++++++++++++++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100644 rtemsbsd/sys/dev/mii/ksz8091rnb_50MHz.c (limited to 'rtemsbsd') diff --git a/rtemsbsd/sys/dev/mii/ksz8091rnb_50MHz.c b/rtemsbsd/sys/dev/mii/ksz8091rnb_50MHz.c new file mode 100644 index 00000000..791ba8e4 --- /dev/null +++ b/rtemsbsd/sys/dev/mii/ksz8091rnb_50MHz.c @@ -0,0 +1,186 @@ +#include + +/*- + * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, + * NASA Ames Research Center, and by Frank van der Linden. + * + * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ + +/*- + * Copyright (c) 1997 Manuel Bouyer. 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 ``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 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 +__FBSDID("$FreeBSD$"); + +/* + * A PHY driver for the KSZ8091RNB in a 50MHz configuration. This PHY needs an + * extra bit set in one of it's config registers for the 50MHz mode. If you have + * that hardware configuration, you can link in this driver. + * + * This driver is based on the ksz8091rnb. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include + +#include + +#define MII_KSZ8091RNB_PHY_CTRL2 0x1F +#define MII_KSZ8091RNB_PHY_CTRL2_REFCLK_SELECT 0x0080 + +static int ksz8091rnb_probe(device_t); +static int ksz8091rnb_attach(device_t); + +static device_method_t ksz8091rnb_methods[] = { + /* device interface */ + DEVMETHOD(device_probe, ksz8091rnb_probe), + DEVMETHOD(device_attach, ksz8091rnb_attach), + DEVMETHOD(device_detach, mii_phy_detach), + DEVMETHOD(device_shutdown, bus_generic_shutdown), + DEVMETHOD_END +}; + +static devclass_t ksz8091rnb_devclass; + +static driver_t ksz8091rnb_driver = { + "ksz8091rnb", + ksz8091rnb_methods, + sizeof(struct mii_softc) +}; + +DRIVER_MODULE(ksz8091rnb, miibus, ksz8091rnb_driver, ksz8091rnb_devclass, 0, 0); + +static const struct mii_phydesc ksz8091rnbphys[] = { + { + .mpd_oui=MII_OUI_MICREL, + .mpd_model=0x16, + .mpd_name="Microchip KSZ8091RNB with 50MHz clock" + }, + MII_PHY_END +}; + +static int ksz8091rnb_service(struct mii_softc *, struct mii_data *, int); +static void ksz8091rnb_phy_reset(struct mii_softc *); + +static const struct mii_phy_funcs ksz8091rnb_funcs = { + ksz8091rnb_service, + ukphy_status, + ksz8091rnb_phy_reset +}; + +static int +ksz8091rnb_probe(device_t dev) +{ + + return (mii_phy_dev_probe(dev, ksz8091rnbphys, BUS_PROBE_DEFAULT)); +} + +static int +ksz8091rnb_attach(device_t dev) +{ + struct mii_softc *sc; + + sc = device_get_softc(dev); + + mii_phy_dev_attach(dev, MIIF_NOMANPAUSE | MIIF_NOISOLATE, + &ksz8091rnb_funcs, 1); + mii_phy_setmedia(sc); + + return (0); +} + +static void +ksz8091rnb_phy_reset(struct mii_softc *sc) +{ + uint16_t ctrl2; + + mii_phy_reset(sc); + + /* Set 50MHz */ + ctrl2 = PHY_READ(sc, MII_KSZ8091RNB_PHY_CTRL2); + ctrl2 |= MII_KSZ8091RNB_PHY_CTRL2_REFCLK_SELECT; + PHY_WRITE(sc, MII_KSZ8091RNB_PHY_CTRL2, ctrl2); +} + +static int +ksz8091rnb_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); +} -- cgit v1.2.3