290 lines
7.5 KiB
C
290 lines
7.5 KiB
C
/*
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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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* $FreeBSD$
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*/
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/*
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* Driver for the National Semiconductor DP83891 and DP83861
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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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*
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* The DP83891 is the older NatSemi 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 83891 can't generate interrupts, while the
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* 83861 can. (I think it wasn't originally designed to do this, but
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* it can now thanks to firmware updates.) The 83861 also allows
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* access to its internal RAM via indirect register access.
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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/malloc.h>
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#include <sys/socket.h>
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#include <sys/bus.h>
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#include <machine/clock.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 <dev/mii/miidevs.h>
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#include <dev/mii/nsgphyreg.h>
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#include "miibus_if.h"
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#if !defined(lint)
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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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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{ 0, 0 }
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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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const struct mii_phydesc gphyters[] = {
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{ MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83861,
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MII_STR_NATSEMI_DP83861 },
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{ MII_OUI_NATSEMI, MII_MODEL_NATSEMI_DP83891,
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MII_STR_NATSEMI_DP83891 },
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{ 0, 0,
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NULL },
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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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struct mii_attach_args *ma;
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const struct mii_phydesc *mpd;
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ma = device_get_ivars(dev);
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mpd = mii_phy_match(ma, gphyters);
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if (mpd != NULL) {
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device_set_desc(dev, mpd->mpd_name);
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return(0);
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}
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return(ENXIO);
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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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struct mii_attach_args *ma;
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struct mii_data *mii;
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const struct mii_phydesc *mpd;
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sc = device_get_softc(dev);
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ma = device_get_ivars(dev);
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mpd = mii_phy_match(ma, gphyters);
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if (bootverbose)
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device_printf(dev, "<rev. %d>\n", MII_REV(ma->mii_id2));
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device_printf(dev, " ");
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sc->mii_dev = device_get_parent(dev);
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mii = device_get_softc(sc->mii_dev);
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LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
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sc->mii_inst = mii->mii_instance;
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sc->mii_phy = ma->mii_phyno;
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sc->mii_service = nsgphy_service;
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sc->mii_pdata = mii;
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sc->mii_anegticks = 5;
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mii->mii_instance++;
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sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) |
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(BMSR_10TFDX|BMSR_10THDX)) & ma->mii_capmask;
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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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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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int reg;
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switch (cmd) {
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case MII_POLLSTAT:
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/*
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* If we're not polling our PHY instance, just return.
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*/
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if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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return (0);
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break;
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case MII_MEDIACHG:
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/*
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* If the media indicates a different PHY instance,
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* isolate ourselves.
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*/
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if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
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reg = PHY_READ(sc, MII_BMCR);
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PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
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return (0);
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}
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/*
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* If the interface is not up, don't do anything.
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*/
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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break;
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mii_phy_setmedia(sc);
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break;
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case MII_TICK:
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/*
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* If we're not currently selected, just return.
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*/
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if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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return (0);
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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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nsgphy_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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}
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if (physup & PHY_SUP_DUPLEX)
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mii->mii_media_active |= IFM_FDX;
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} else
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mii->mii_media_active = ife->ifm_media;
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}
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