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/* $OpenBSD: eephy.c,v 1.46 2008/10/07 20:41:05 kettenis Exp $ */
/*
* Principal Author: Parag Patel
* Copyright (c) 2001
* 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 unmodified, 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.
*
* 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.
*
* Additonal Copyright (c) 2001 by Traakan Software under same licence.
* Secondary Author: Matthew Jacob
*/
/*
* driver for the Marvell 88E1000 series external 1000/100/10-BT PHY.
*/
/*
* Support added for the Marvell 88E1011 (Alaska) 1000/100/10baseTX and
* 1000baseSX PHY.
* Nathan Binkert <nate@openbsd.org>
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/socket.h>
#include <sys/proc.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/eephyreg.h>
int eephy_service(struct mii_softc *, struct mii_data *, int);
void eephy_status(struct mii_softc *);
int eephymatch(struct device *, void *, void *);
void eephyattach(struct device *, struct device *, void *);
struct cfattach eephy_ca = {
sizeof (struct mii_softc), eephymatch, eephyattach,
mii_phy_detach, mii_phy_activate
};
struct cfdriver eephy_cd = {
NULL, "eephy", DV_DULL
};
void eephy_reset(struct mii_softc *);
const struct mii_phy_funcs eephy_funcs = {
eephy_service, eephy_status, eephy_reset,
};
static const struct mii_phydesc eephys[] = {
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1000_1,
MII_STR_MARVELL_E1000_1 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1000_2,
MII_STR_MARVELL_E1000_2 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1000_3,
MII_STR_MARVELL_E1000_3 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1000_4,
MII_STR_MARVELL_E1000_4 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1000S,
MII_STR_MARVELL_E1000S },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1011,
MII_STR_MARVELL_E1011 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1111,
MII_STR_MARVELL_E1111 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1112,
MII_STR_MARVELL_E1112 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1116,
MII_STR_MARVELL_E1116 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1116R,
MII_STR_MARVELL_E1116R },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1118,
MII_STR_MARVELL_E1118 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E1149,
MII_STR_MARVELL_E1149 },
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E3016,
MII_STR_MARVELL_E3016},
{ MII_OUI_MARVELL, MII_MODEL_MARVELL_E3082,
MII_STR_MARVELL_E3082 },
{ MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1000_5,
MII_STR_xxMARVELL_E1000_5 },
{ MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1000_6,
MII_STR_xxMARVELL_E1000_6 },
{ MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1000_7,
MII_STR_xxMARVELL_E1000_7 },
{ MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E1111,
MII_STR_xxMARVELL_E1111 },
{ 0, 0,
NULL },
};
int
eephymatch(struct device *parent, void *match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, eephys) != NULL)
return (10);
return (0);
}
void
eephyattach(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 reg, page;
mpd = mii_phy_match(ma, eephys);
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 = &eephy_funcs;
sc->mii_model = MII_MODEL(ma->mii_id2);
sc->mii_pdata = mii;
sc->mii_flags = ma->mii_flags;
/* XXX No loopback support yet, although the hardware can do it. */
sc->mii_flags |= MIIF_NOLOOP;
/* Make sure page 0 is selected. */
PHY_WRITE(sc, E1000_EADR, 0);
/* Switch to copper-only mode if necessary. */
if (sc->mii_model == MII_MODEL_MARVELL_E1111 &&
(sc->mii_flags & MIIF_HAVEFIBER) == 0) {
/*
* The onboard 88E1111 PHYs on the Sun X4100 M2 come
* up with fiber/copper auto-selection enabled, even
* though the machine only has copper ports. This
* makes the chip autoselect to 1000baseX, and makes
* it impossible to select any other media. So
* disable fiber/copper autoselection.
*/
reg = PHY_READ(sc, E1000_ESSR);
if ((reg & E1000_ESSR_HWCFG_MODE) == E1000_ESSR_RGMII_COPPER) {
reg |= E1000_ESSR_DIS_FC;
PHY_WRITE(sc, E1000_ESSR, reg);
PHY_RESET(sc);
}
}
/* Switch to fiber-only mode if necessary. */
if (sc->mii_model == MII_MODEL_MARVELL_E1112 &&
sc->mii_flags & MIIF_HAVEFIBER) {
page = PHY_READ(sc, E1000_EADR);
PHY_WRITE(sc, E1000_EADR, 2);
reg = PHY_READ(sc, E1000_SCR);
reg &= ~E1000_SCR_MODE_MASK;
reg |= E1000_SCR_MODE_1000BX;
PHY_WRITE(sc, E1000_SCR, reg);
PHY_WRITE(sc, E1000_EADR, page);
PHY_RESET(sc);
}
sc->mii_capabilities = PHY_READ(sc, E1000_SR) & ma->mii_capmask;
if (sc->mii_capabilities & BMSR_EXTSTAT)
sc->mii_extcapabilities = PHY_READ(sc, E1000_ESR);
mii_phy_add_media(sc);
/*
* Initialize PHY Specific Control Register.
*/
reg = PHY_READ(sc, E1000_SCR);
/* Assert CRS on transmit. */
reg |= E1000_SCR_ASSERT_CRS_ON_TX;
/* Enable auto crossover. */
switch (sc->mii_model) {
case MII_MODEL_MARVELL_E3016:
case MII_MODEL_MARVELL_E3082:
/* Bits are in a different position. */
reg |= (E1000_SCR_AUTO_X_MODE >> 1);
break;
default:
/* Automatic crossover causes problems for 1000baseX. */
if (sc->mii_flags & MIIF_IS_1000X)
reg &= ~E1000_SCR_AUTO_X_MODE;
else
reg |= E1000_SCR_AUTO_X_MODE;
}
/* Disable energy detect; only available on some models. */
switch(sc->mii_model) {
case MII_MODEL_MARVELL_E1011:
case MII_MODEL_MARVELL_E1111:
case MII_MODEL_MARVELL_E1112:
/* Disable energy detect. */
reg &= ~E1000_SCR_EN_DETECT_MASK;
break;
}
PHY_WRITE(sc, E1000_SCR, reg);
/* 25 MHz TX_CLK should always work. */
reg = PHY_READ(sc, E1000_ESCR);
reg |= E1000_ESCR_TX_CLK_25;
PHY_WRITE(sc, E1000_ESCR, reg);
/*
* Do a software reset for these settings to take effect.
* Disable autonegotiation, such that all capabilities get
* advertised when it is switched back on.
*/
reg = PHY_READ(sc, E1000_CR);
reg &= ~E1000_CR_AUTO_NEG_ENABLE;
PHY_WRITE(sc, E1000_CR, reg | E1000_CR_RESET);
}
void
eephy_reset(struct mii_softc *sc)
{
int reg, i;
reg = PHY_READ(sc, E1000_CR);
reg |= E1000_CR_RESET;
PHY_WRITE(sc, E1000_CR, reg);
for (i = 0; i < 500; i++) {
DELAY(1);
reg = PHY_READ(sc, E1000_CR);
if (!(reg & E1000_CR_RESET))
break;
}
}
int
eephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmcr;
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 the media indicates a different PHY instance,
* isolate ourselves.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
bmcr = PHY_READ(sc, E1000_CR);
PHY_WRITE(sc, E1000_CR, bmcr | E1000_CR_ISOLATE);
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);
/*
* If autonegitation is not enabled, we need a
* software reset for the settings to take effect.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
bmcr = PHY_READ(sc, E1000_CR);
PHY_WRITE(sc, E1000_CR, bmcr | E1000_CR_RESET);
}
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
eephy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
int bmcr, gsr, ssr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmcr = PHY_READ(sc, E1000_CR);
ssr = PHY_READ(sc, E1000_SSR);
if (ssr & E1000_SSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
if (bmcr & E1000_CR_LOOPBACK)
mii->mii_media_active |= IFM_LOOP;
if (!(ssr & E1000_SSR_SPD_DPLX_RESOLVED)) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
if (sc->mii_flags & MIIF_IS_1000X) {
mii->mii_media_active |= IFM_1000_SX;
} else {
if (ssr & E1000_SSR_1000MBS)
mii->mii_media_active |= IFM_1000_T;
else if (ssr & E1000_SSR_100MBS)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
}
if (ssr & E1000_SSR_DUPLEX)
mii->mii_media_active |= mii_phy_flowstatus(sc) | IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
gsr = PHY_READ(sc, E1000_1GSR) | PHY_READ(sc, E1000_1GSR);
if (gsr & E1000_1GSR_MS_CONFIG_RES)
mii->mii_media_active |= IFM_ETH_MASTER;
}
}
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