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|
/*
mii.c: MII interface library
Maintained by Jeff Garzik <jgarzik@pobox.com>
Copyright 2001,2002 Jeff Garzik
Various code came from myson803.c and other files by
Donald Becker. Copyright:
Written 1998-2002 by Donald Becker.
This software may be used and distributed according
to the terms of the GNU General Public License (GPL),
incorporated herein by reference. Drivers based on
or derived from this code fall under the GPL and must
retain the authorship, copyright and license notice.
This file is not a complete program and may only be
used when the entire operating system is licensed
under the GPL.
The author may be reached as becker@scyld.com, or C/O
Scyld Computing Corporation
410 Severn Ave., Suite 210
Annapolis MD 21403
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/mdio.h>
static u32 mii_get_an(struct mii_if_info *mii, u16 addr)
{
u32 result = 0;
int advert;
advert = mii->mdio_read(mii->dev, mii->phy_id, addr);
if (advert & LPA_LPACK)
result |= ADVERTISED_Autoneg;
if (advert & ADVERTISE_10HALF)
result |= ADVERTISED_10baseT_Half;
if (advert & ADVERTISE_10FULL)
result |= ADVERTISED_10baseT_Full;
if (advert & ADVERTISE_100HALF)
result |= ADVERTISED_100baseT_Half;
if (advert & ADVERTISE_100FULL)
result |= ADVERTISED_100baseT_Full;
return result;
}
/**
* mii_ethtool_gset - get settings that are specified in @ecmd
* @mii: MII interface
* @ecmd: requested ethtool_cmd
*
* Returns 0 for success, negative on error.
*/
int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
{
struct net_device *dev = mii->dev;
u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0;
u32 nego;
ecmd->supported =
(SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII);
if (mii->supports_gmii)
ecmd->supported |= SUPPORTED_1000baseT_Half |
SUPPORTED_1000baseT_Full;
/* only supports twisted-pair */
ecmd->port = PORT_MII;
/* only supports internal transceiver */
ecmd->transceiver = XCVR_INTERNAL;
/* this isn't fully supported at higher layers */
ecmd->phy_address = mii->phy_id;
ecmd->mdio_support = MDIO_SUPPORTS_C22;
ecmd->advertising = ADVERTISED_TP | ADVERTISED_MII;
bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR);
bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR);
if (mii->supports_gmii) {
ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000);
}
if (bmcr & BMCR_ANENABLE) {
ecmd->advertising |= ADVERTISED_Autoneg;
ecmd->autoneg = AUTONEG_ENABLE;
ecmd->advertising |= mii_get_an(mii, MII_ADVERTISE);
if (ctrl1000 & ADVERTISE_1000HALF)
ecmd->advertising |= ADVERTISED_1000baseT_Half;
if (ctrl1000 & ADVERTISE_1000FULL)
ecmd->advertising |= ADVERTISED_1000baseT_Full;
if (bmsr & BMSR_ANEGCOMPLETE) {
ecmd->lp_advertising = mii_get_an(mii, MII_LPA);
if (stat1000 & LPA_1000HALF)
ecmd->lp_advertising |=
ADVERTISED_1000baseT_Half;
if (stat1000 & LPA_1000FULL)
ecmd->lp_advertising |=
ADVERTISED_1000baseT_Full;
} else {
ecmd->lp_advertising = 0;
}
nego = ecmd->advertising & ecmd->lp_advertising;
if (nego & (ADVERTISED_1000baseT_Full |
ADVERTISED_1000baseT_Half)) {
ecmd->speed = SPEED_1000;
ecmd->duplex = !!(nego & ADVERTISED_1000baseT_Full);
} else if (nego & (ADVERTISED_100baseT_Full |
ADVERTISED_100baseT_Half)) {
ecmd->speed = SPEED_100;
ecmd->duplex = !!(nego & ADVERTISED_100baseT_Full);
} else {
ecmd->speed = SPEED_10;
ecmd->duplex = !!(nego & ADVERTISED_10baseT_Full);
}
} else {
ecmd->autoneg = AUTONEG_DISABLE;
ecmd->speed = ((bmcr & BMCR_SPEED1000 &&
(bmcr & BMCR_SPEED100) == 0) ? SPEED_1000 :
(bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10);
ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF;
}
mii->full_duplex = ecmd->duplex;
/* ignore maxtxpkt, maxrxpkt for now */
return 0;
}
/**
* mii_ethtool_sset - set settings that are specified in @ecmd
* @mii: MII interface
* @ecmd: requested ethtool_cmd
*
* Returns 0 for success, negative on error.
*/
int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd)
{
struct net_device *dev = mii->dev;
if (ecmd->speed != SPEED_10 &&
ecmd->speed != SPEED_100 &&
ecmd->speed != SPEED_1000)
return -EINVAL;
if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
return -EINVAL;
if (ecmd->port != PORT_MII)
return -EINVAL;
if (ecmd->transceiver != XCVR_INTERNAL)
return -EINVAL;
if (ecmd->phy_address != mii->phy_id)
return -EINVAL;
if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE)
return -EINVAL;
if ((ecmd->speed == SPEED_1000) && (!mii->supports_gmii))
return -EINVAL;
/* ignore supported, maxtxpkt, maxrxpkt */
if (ecmd->autoneg == AUTONEG_ENABLE) {
u32 bmcr, advert, tmp;
u32 advert2 = 0, tmp2 = 0;
if ((ecmd->advertising & (ADVERTISED_10baseT_Half |
ADVERTISED_10baseT_Full |
ADVERTISED_100baseT_Half |
ADVERTISED_100baseT_Full |
ADVERTISED_1000baseT_Half |
ADVERTISED_1000baseT_Full)) == 0)
return -EINVAL;
/* advertise only what has been requested */
advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE);
tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
if (mii->supports_gmii) {
advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000);
tmp2 = advert2 & ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL);
}
if (ecmd->advertising & ADVERTISED_10baseT_Half)
tmp |= ADVERTISE_10HALF;
if (ecmd->advertising & ADVERTISED_10baseT_Full)
tmp |= ADVERTISE_10FULL;
if (ecmd->advertising & ADVERTISED_100baseT_Half)
tmp |= ADVERTISE_100HALF;
if (ecmd->advertising & ADVERTISED_100baseT_Full)
tmp |= ADVERTISE_100FULL;
if (mii->supports_gmii) {
if (ecmd->advertising & ADVERTISED_1000baseT_Half)
tmp2 |= ADVERTISE_1000HALF;
if (ecmd->advertising & ADVERTISED_1000baseT_Full)
tmp2 |= ADVERTISE_1000FULL;
}
if (advert != tmp) {
mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp);
mii->advertising = tmp;
}
if ((mii->supports_gmii) && (advert2 != tmp2))
mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2);
/* turn on autonegotiation, and force a renegotiate */
bmcr = mii
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