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/* $OpenBSD: rlphy.c,v 1.2 1998/11/20 02:42:14 jason Exp $ */
/*
* Copyright (c) 1998 Jason L. Wright (jason@thought.net)
* 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 Jason L. Wright
* 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 the internal PHY found on RTL8139 based nics, based
* on drivers for the 'exphy' (Internal 3Com phys) and 'nsphy'
* (National Semiconductor DP83840).
*/
#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 <net/if.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/mii/miidevs.h>
int rlphymatch __P((struct device *, void *, void *));
void rlphyattach __P((struct device *, struct device *, void *));
struct cfattach rlphy_ca = {
sizeof(struct mii_softc), rlphymatch, rlphyattach
};
struct cfdriver rlphy_cd = {
NULL, "rlphy", DV_DULL
};
int rlphy_service __P((struct mii_softc *, struct mii_data *, int));
void rlphy_reset __P((struct mii_softc *));
int
rlphymatch(parent, match, aux)
struct device *parent;
void *match;
void *aux;
{
struct mii_attach_args *ma = aux;
if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
MII_MODEL(ma->mii_id2) != 0)
return (0);
if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "rl") != 0)
return (0);
/*
* A "real" phy should get preference, but on the 8139 there
* is no phyid register.
*/
return (5);
}
void
rlphyattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct mii_softc *sc = (struct mii_softc *)self;
struct mii_attach_args *ma = aux;
struct mii_data *mii = ma->mii_data;
printf(": RTL internal phy\n");
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_service = rlphy_service;
sc->mii_pdata = mii;
ifmedia_add(&mii->mii_media,
IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
BMCR_ISO, NULL);
ifmedia_add(&mii->mii_media,
IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
BMCR_LOOP | BMCR_S100, NULL);
rlphy_reset(sc);
sc->mii_capabilities =
PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
printf("%s: ", sc->mii_dev.dv_xname);
if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
printf("no media present");
else
mii_add_media(mii, sc->mii_capabilities,
sc->mii_inst);
printf("\n");
}
int
rlphy_service(sc, mii, cmd)
struct mii_softc *sc;
struct mii_data *mii;
int cmd;
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
/*
* Can't isolate the RTL8139 phy, so it has to be the only one.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
panic("rlphy_service: attempt to isolate phy");
switch (cmd) {
case MII_POLLSTAT:
break;
case MII_MEDIACHG:
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
/*
* If we're already in auto mode, just return.
*/
if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
return (0);
(void) mii_phy_auto(sc);
break;
case IFM_100_T4:
/*
* XXX Not supported as a manual setting right now.
*/
return (EINVAL);
default:
/*
* BMCR data is stored in the ifmedia entry.
*/
PHY_WRITE(sc, MII_ANAR,
mii_anar(ife->ifm_media));
PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
}
break;
case MII_TICK:
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
return (0);
/*
* Is the interface even up?
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
/*
* The RTL8139 autonegotiation doesn't need to be
* kicked; it continues in the background.
*/
break;
}
/* Update the media status. */
ukphy_status(sc);
/* Callback if something changed. */
if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
(*mii->mii_statchg)(sc->mii_dev.dv_parent);
sc->mii_active = mii->mii_media_active;
}
return (0);
}
void
rlphy_reset(sc)
struct mii_softc *sc;
{
int bmcr;
/*
* XXX The RTL8139 doesn't set the BMCR properly
* XXX after reset, which breaks autoneg.
*/
bmcr = PHY_READ(sc, MII_BMCR);
mii_phy_reset(sc);
PHY_WRITE(sc, MII_BMCR, bmcr);
}
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