243 lines
6.8 KiB
C
243 lines
6.8 KiB
C
/* $NetBSD: icsphy.c,v 1.41 2006/11/16 21:24:07 christos Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-NetBSD
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*
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* Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1997 Manuel Bouyer. 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* driver for Integrated Circuit Systems' ICS1889-1893 ethernet 10/100 PHY
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* datasheet from www.icst.com
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*/
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#include <sys/param.h>
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#include <sys/systm.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/bus.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include "miidevs.h"
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#include <dev/mii/icsphyreg.h>
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#include "miibus_if.h"
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static int icsphy_probe(device_t dev);
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static int icsphy_attach(device_t dev);
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static device_method_t icsphy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, icsphy_probe),
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DEVMETHOD(device_attach, icsphy_attach),
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DEVMETHOD(device_detach, mii_phy_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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static devclass_t icsphy_devclass;
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static driver_t icsphy_driver = {
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"icsphy",
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icsphy_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(icsphy, miibus, icsphy_driver, icsphy_devclass, 0, 0);
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static int icsphy_service(struct mii_softc *, struct mii_data *, int);
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static void icsphy_status(struct mii_softc *);
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static void icsphy_reset(struct mii_softc *);
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static const struct mii_phydesc icsphys[] = {
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MII_PHY_DESC(ICS, 1889),
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MII_PHY_DESC(ICS, 1890),
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MII_PHY_DESC(ICS, 1892),
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MII_PHY_DESC(ICS, 1893),
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MII_PHY_DESC(ICS, 1893C),
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MII_PHY_END
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};
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static const struct mii_phy_funcs icsphy_funcs = {
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icsphy_service,
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icsphy_status,
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icsphy_reset
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};
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static int
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icsphy_probe(device_t dev)
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{
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return (mii_phy_dev_probe(dev, icsphys, BUS_PROBE_DEFAULT));
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}
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static int
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icsphy_attach(device_t dev)
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{
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mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
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&icsphy_funcs, 1);
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return (0);
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}
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static int
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icsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
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{
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switch (cmd) {
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case MII_POLLSTAT:
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break;
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case MII_MEDIACHG:
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mii_phy_setmedia(sc);
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break;
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case MII_TICK:
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if (mii_phy_tick(sc) == EJUSTRETURN)
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return (0);
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break;
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}
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/* Update the media status. */
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PHY_STATUS(sc);
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/* Callback if something changed. */
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mii_phy_update(sc, cmd);
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return (0);
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}
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static void
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icsphy_status(struct mii_softc *sc)
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{
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struct mii_data *mii = sc->mii_pdata;
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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int bmcr, qpr;
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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/*
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* Don't get link from the BMSR. It's available in the QPR,
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* and we have to read it twice to unlatch it anyhow. This
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* gives us fewer register reads.
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*/
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qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* unlatch */
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qpr = PHY_READ(sc, MII_ICSPHY_QPR); /* real value */
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if (qpr & QPR_LINK)
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mii->mii_media_status |= IFM_ACTIVE;
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bmcr = PHY_READ(sc, MII_BMCR);
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if (bmcr & BMCR_ISO) {
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mii->mii_media_active |= IFM_NONE;
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mii->mii_media_status = 0;
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return;
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}
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if (bmcr & BMCR_LOOP)
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mii->mii_media_active |= IFM_LOOP;
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if (bmcr & BMCR_AUTOEN) {
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if ((qpr & QPR_ACOMP) == 0) {
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/* Erg, still trying, I guess... */
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mii->mii_media_active |= IFM_NONE;
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return;
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}
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if (qpr & QPR_SPEED)
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mii->mii_media_active |= IFM_100_TX;
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else
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mii->mii_media_active |= IFM_10_T;
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if (qpr & QPR_FDX)
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mii->mii_media_active |=
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IFM_FDX | mii_phy_flowstatus(sc);
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else
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mii->mii_media_active |= IFM_HDX;
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} else
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mii->mii_media_active = ife->ifm_media;
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}
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static void
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icsphy_reset(struct mii_softc *sc)
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{
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mii_phy_reset(sc);
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/* set powerdown feature */
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switch (sc->mii_mpd_model) {
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case MII_MODEL_ICS_1890:
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case MII_MODEL_ICS_1893:
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PHY_WRITE(sc, MII_ICSPHY_ECR2, ECR2_100AUTOPWRDN);
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break;
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case MII_MODEL_ICS_1892:
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PHY_WRITE(sc, MII_ICSPHY_ECR2,
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ECR2_10AUTOPWRDN|ECR2_100AUTOPWRDN);
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break;
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default:
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/* 1889 have no ECR2 */
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break;
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}
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/*
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* There is no description that the reset do auto-negotiation in the
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* data sheet.
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*/
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PHY_WRITE(sc, MII_BMCR, BMCR_S100|BMCR_STARTNEG|BMCR_FDX);
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}
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