1537078d8f
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249 lines
6.7 KiB
C
249 lines
6.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 2001 Wind River Systems
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* Copyright (c) 2001
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* Bill Paul <wpaul@bsdi.com>. All rights reserved.
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* Copyright (c) 1998, 1999, 2000, 2001 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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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
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* 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 the National Semiconductor DP83861, DP83865 and DP83891
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* 10/100/1000 PHYs.
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* Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf
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* and at: http://www.national.com/ds/DP/DP83865.pdf
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*
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* The DP83891 is the older NS GigE PHY which isn't being sold
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* anymore. The DP83861 is its replacement, which is an 'enhanced'
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* firmware driven component. The major difference between the
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* two is that the DP83891 can't generate interrupts, while the
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* 83861 can (probably it wasn't originally designed to do this, but
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* it can now thanks to firmware updates). The DP83861 also allows
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* access to its internal RAM via indirect register access. The
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* DP83865 is an ultra low power version of the DP83861 and DP83891.
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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/nsgphyreg.h>
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#include "miibus_if.h"
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static int nsgphy_probe(device_t);
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static int nsgphy_attach(device_t);
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static device_method_t nsgphy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, nsgphy_probe),
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DEVMETHOD(device_attach, nsgphy_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 nsgphy_devclass;
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static driver_t nsgphy_driver = {
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"nsgphy",
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nsgphy_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0);
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static int nsgphy_service(struct mii_softc *, struct mii_data *,int);
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static void nsgphy_status(struct mii_softc *);
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static const struct mii_phydesc nsgphys[] = {
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MII_PHY_DESC(xxNATSEMI, DP83861),
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MII_PHY_DESC(xxNATSEMI, DP83865),
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MII_PHY_DESC(xxNATSEMI, DP83891),
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MII_PHY_END
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};
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static const struct mii_phy_funcs nsgphy_funcs = {
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nsgphy_service,
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nsgphy_status,
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mii_phy_reset
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};
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static int
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nsgphy_probe(device_t dev)
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{
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return (mii_phy_dev_probe(dev, nsgphys, BUS_PROBE_DEFAULT));
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}
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static int
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nsgphy_attach(device_t dev)
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{
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struct mii_softc *sc;
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sc = device_get_softc(dev);
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mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &nsgphy_funcs, 0);
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PHY_RESET(sc);
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/*
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* NB: the PHY has the 10BASE-T BMSR bits hard-wired to 0,
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* even though it supports 10BASE-T.
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*/
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sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) |
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BMSR_10TFDX | BMSR_10THDX) & sc->mii_capmask;
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/*
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* Note that as documented manual 1000BASE-T modes of DP83865 only
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* work together with other National Semiconductor PHYs.
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*/
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if (sc->mii_capabilities & BMSR_EXTSTAT)
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sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
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mii_phy_add_media(sc);
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printf("\n");
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MIIBUS_MEDIAINIT(sc->mii_dev);
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return (0);
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}
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static int
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nsgphy_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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nsgphy_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 bmsr, bmcr, physup, gtsr;
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
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physup = PHY_READ(sc, NSGPHY_MII_PHYSUP);
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if (physup & PHY_SUP_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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/*
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* The media status bits are only valid if autonegotiation
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* has completed (or it's disabled).
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*/
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if ((bmsr & BMSR_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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switch (physup & (PHY_SUP_SPEED1 | PHY_SUP_SPEED0)) {
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case PHY_SUP_SPEED1:
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mii->mii_media_active |= IFM_1000_T;
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gtsr = PHY_READ(sc, MII_100T2SR);
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if (gtsr & GTSR_MS_RES)
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mii->mii_media_active |= IFM_ETH_MASTER;
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break;
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case PHY_SUP_SPEED0:
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mii->mii_media_active |= IFM_100_TX;
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break;
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case 0:
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mii->mii_media_active |= IFM_10_T;
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break;
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default:
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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 (physup & PHY_SUP_DUPLEX)
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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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