NetBSD/sys/dev/mii/gphyter.c

311 lines
9.3 KiB
C

/* $NetBSD: gphyter.c,v 1.6 2001/11/13 07:41:36 lukem Exp $ */
/*-
* Copyright (c) 1998, 1999, 2000, 2001 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.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Manuel Bouyer.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
/*
* driver for National Semiconductor's DP83891 and DP83861 `Gig PHYTER'
* ethernet 10/100/1000 PHYs. The DP83891 is an older, non-firmware-
* driven version of the DP83861.
*
* Data Sheet available from www.national.com
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: gphyter.c,v 1.6 2001/11/13 07:41:36 lukem Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <net/if.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/mii/miidevs.h>
#include <dev/mii/gphyterreg.h>
int gphytermatch(struct device *, struct cfdata *, void *);
void gphyterattach(struct device *, struct device *, void *);
struct cfattach gphyter_ca = {
sizeof(struct mii_softc), gphytermatch, gphyterattach,
mii_phy_detach, mii_phy_activate
};
int gphyter_service(struct mii_softc *, struct mii_data *, int);
void gphyter_status(struct mii_softc *);
const struct mii_phy_funcs gphyter_funcs = {
gphyter_service, gphyter_status, mii_phy_reset,
};
const struct mii_phydesc gphyters[] = {
{ MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83861,
MII_STR_xxNATSEMI_DP83861 },
{ MII_OUI_xxNATSEMI, MII_MODEL_xxNATSEMI_DP83891,
MII_STR_xxNATSEMI_DP83891 },
{ 0, 0,
NULL },
};
int
gphytermatch(struct device *parent, struct cfdata *match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, gphyters) != NULL)
return (10);
return (0);
}
void
gphyterattach(struct device *parent, struct device *self, void *aux)
{
struct mii_softc *sc = (struct mii_softc *)self;
struct mii_attach_args *ma = aux;
struct mii_data *mii = ma->mii_data;
const struct mii_phydesc *mpd;
int anar, strap;
mpd = mii_phy_match(ma, gphyters);
printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_funcs = &gphyter_funcs;
sc->mii_pdata = mii;
sc->mii_flags = mii->mii_flags;
sc->mii_anegticks = 5;
PHY_RESET(sc);
sc->mii_capabilities =
PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
if (sc->mii_capabilities & BMSR_EXTSTAT)
sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
/*
* The Gig PHYTER seems to have the 10baseT BMSR bits
* hard-wired to 0, even though the device supports
* 10baseT. What we do instead is read the post-reset
* ANAR, who's 10baseT-related bits are set by strapping
* pin 180, and fake the BMSR bits.
*/
anar = PHY_READ(sc, MII_ANAR);
if (anar & ANAR_10)
sc->mii_capabilities |= (BMSR_10THDX & ma->mii_capmask);
if (anar & ANAR_10_FD)
sc->mii_capabilities |= (BMSR_10TFDX & ma->mii_capmask);
printf("%s: ", sc->mii_dev.dv_xname);
if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
(sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0)
printf("no media present");
else
mii_phy_add_media(sc);
printf("\n");
strap = PHY_READ(sc, MII_GPHYTER_STRAP);
printf("%s: strapped to %s mode", sc->mii_dev.dv_xname,
(strap & STRAP_MS_VAL) ? "master" : "slave");
if (strap & STRAP_NC_MODE)
printf(", pre-C5 BCM5400 compat enabled");
printf("\n");
}
int
gphyter_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
switch (cmd) {
case MII_POLLSTAT:
/*
* If we're not polling our PHY instance, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
break;
case MII_MEDIACHG:
/*
* If the media indicates a different PHY instance,
* isolate ourselves.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
reg = PHY_READ(sc, MII_BMCR);
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
return (0);
}
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
mii_phy_setmedia(sc);
break;
case MII_TICK:
/*
* If we're not currently selected, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
if (mii_phy_tick(sc) == EJUSTRETURN)
return (0);
break;
case MII_DOWN:
mii_phy_down(sc);
return (0);
}
/* Update the media status. */
mii_phy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
void
gphyter_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmsr, bmcr, physup, gtsr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
physup = PHY_READ(sc, MII_GPHYTER_PHY_SUP);
if (physup & PHY_SUP_LINK)
mii->mii_media_status |= IFM_ACTIVE;
bmcr = PHY_READ(sc, MII_BMCR);
if (bmcr & BMCR_ISO) {
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
return;
}
if (bmcr & BMCR_LOOP)
mii->mii_media_active |= IFM_LOOP;
if (bmcr & BMCR_AUTOEN) {
/*
* The media status bits are only valid of autonegotiation
* has completed (or it's disabled).
*/
if ((bmsr & BMSR_ACOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
switch (physup & (PHY_SUP_SPEED1|PHY_SUP_SPEED0)) {
case PHY_SUP_SPEED1:
mii->mii_media_active |= IFM_1000_T;
gtsr = PHY_READ(sc, MII_100T2SR);
if (gtsr & GTSR_MS_RES)
mii->mii_media_active |= IFM_ETH_MASTER;
break;
case PHY_SUP_SPEED0:
mii->mii_media_active |= IFM_100_TX;
break;
case 0:
mii->mii_media_active |= IFM_10_T;
break;
default:
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
}
if (physup & PHY_SUP_DUPLEX)
mii->mii_media_active |= IFM_FDX;
} else
mii->mii_media_active = ife->ifm_media;
}