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/* $OpenBSD: urlphy.c,v 1.15 2013/12/28 03:30:41 deraadt Exp $ */
/* $NetBSD: urlphy.c,v 1.1 2002/03/28 21:07:53 ichiro Exp $ */
/*
* Copyright (c) 2001, 2002
* Shingo WATANABE <nabe@nabechan.org>. 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. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
*/
/*
* driver for Realtek RL8150L internal phy
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.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>
#include <dev/mii/urlphyreg.h>
#define URLPHY_DEBUG 0
#ifdef URLPHY_DEBUG
#define DPRINTF(x) if (urlphydebug) printf x
#define DPRINTFN(n,x) if (urlphydebug>(n)) printf x
int urlphydebug = URLPHY_DEBUG;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
int urlphy_match(struct device *, void *, void *);
void urlphy_attach(struct device *, struct device *, void *);
struct cfattach urlphy_ca = {
sizeof(struct mii_softc), urlphy_match, urlphy_attach, mii_phy_detach
};
struct cfdriver urlphy_cd = {
NULL, "urlphy", DV_DULL
};
int urlphy_service(struct mii_softc *, struct mii_data *, int);
void urlphy_status(struct mii_softc *);
const struct mii_phy_funcs urlphy_funcs = {
urlphy_service, urlphy_status, mii_phy_reset,
};
int
urlphy_match(struct device *parent, void *match, void *aux)
{
struct mii_attach_args *ma = aux;
/*
* RTL8150 reports OUT == 0, MODEL == 0
*/
if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 &&
MII_MODEL(ma->mii_id2) != 0)
return (0);
/*
* Make sure the parent is an 'url' device.
*/
if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "url") != 0)
return (0);
return (10);
}
void
urlphy_attach(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;
printf(": RTL internal phy\n");
DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_funcs = &urlphy_funcs;
sc->mii_pdata = mii;
sc->mii_flags = ma->mii_flags;
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP;
if (mii->mii_instance != 0) {
printf("%s: ignoring this PHY, non-zero instance\n",
sc->mii_dev.dv_xname);
return;
}
PHY_RESET(sc);
sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
if (sc->mii_capabilities & BMSR_MEDIAMASK)
mii_phy_add_media(sc);
}
int
urlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
return (ENXIO);
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 we're not currently selected, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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);
/* Just bail now if the interface is down. */
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
/*
* If we're not doing autonegotiation, we don't need to do
* any extra work here. However, we need to check the link
* status so we can generate an announcement if the status
* changes.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
return (0);
/* Read the status register twice; MSR_LINK is latch-low. */
reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR);
if (reg & URLPHY_MSR_LINK) {
sc->mii_ticks = 0;
break;
}
/*
* Only retry autonegotiation every mii_anegticks seconds.
*/
if (++sc->mii_ticks <= sc->mii_anegticks)
return (0);
sc->mii_ticks = 0;
PHY_RESET(sc);
if (mii_phy_auto(sc, 0) == 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
urlphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int msr, bmsr, bmcr;
DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
/*
* The link status bit is not exist in the BMSR register,
* so we need to read the MSR register to get link status.
*/
msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR);
if (msr & URLPHY_MSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __func__,
mii->mii_media_status & IFM_ACTIVE ? "up" : "down"));
bmcr = PHY_READ(sc, MII_BMCR);
if (bmcr & BMCR_AUTOEN) {
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if ((bmsr & BMSR_ACOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
if (msr & URLPHY_MSR_SPEED_100)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
if (msr & URLPHY_MSR_DUPLEX)
mii->mii_media_active |= IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
} else
mii->mii_media_active = ife->ifm_media;
}
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