From e34cb44ac7c08783b98a16eec70125e205e6eb12 Mon Sep 17 00:00:00 2001 From: Dominik Sliwa Date: Tue, 21 Nov 2017 12:59:41 +0000 Subject: initial commit Generated againts 4.14 kernel source with git backports 1d8cc151d365582b42be00af776270b834a7a37d --- compat/backport-4.10.c | 254 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 254 insertions(+) create mode 100644 compat/backport-4.10.c (limited to 'compat/backport-4.10.c') diff --git a/compat/backport-4.10.c b/compat/backport-4.10.c new file mode 100644 index 0000000..44e02dd --- /dev/null +++ b/compat/backport-4.10.c @@ -0,0 +1,254 @@ +/* + * Copyright(c) 2017 Hauke Mehrtens + * + * Backport functionality introduced in Linux 4.10. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include +#include +#include +#include + +#if LINUX_VERSION_IS_GEQ(4,6,0) +#if LINUX_VERSION_IS_LESS(4,7,0) +static bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, + const unsigned long *src) +{ + bool retval = true; + + /* TODO: following test will soon always be true */ + if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) { + __ETHTOOL_DECLARE_LINK_MODE_MASK(ext); + + bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS); + bitmap_fill(ext, 32); + bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS); + if (bitmap_intersects(ext, src, + __ETHTOOL_LINK_MODE_MASK_NBITS)) { + /* src mask goes beyond bit 31 */ + retval = false; + } + } + *legacy_u32 = src[0]; + return retval; +} + +static void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, + u32 legacy_u32) +{ + bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS); + dst[0] = legacy_u32; +} +#endif + +static u32 mii_get_an(struct mii_if_info *mii, u16 addr) +{ + int advert; + + advert = mii->mdio_read(mii->dev, mii->phy_id, addr); + + return mii_lpa_to_ethtool_lpa_t(advert); +} + +/** + * mii_ethtool_set_link_ksettings - set settings that are specified in @cmd + * @mii: MII interfaces + * @cmd: requested ethtool_link_ksettings + * + * Returns 0 for success, negative on error. + */ +int mii_ethtool_set_link_ksettings(struct mii_if_info *mii, + const struct ethtool_link_ksettings *cmd) +{ + struct net_device *dev = mii->dev; + u32 speed = cmd->base.speed; + + if (speed != SPEED_10 && + speed != SPEED_100 && + speed != SPEED_1000) + return -EINVAL; + if (cmd->base.duplex != DUPLEX_HALF && cmd->base.duplex != DUPLEX_FULL) + return -EINVAL; + if (cmd->base.port != PORT_MII) + return -EINVAL; + if (cmd->base.phy_address != mii->phy_id) + return -EINVAL; + if (cmd->base.autoneg != AUTONEG_DISABLE && + cmd->base.autoneg != AUTONEG_ENABLE) + return -EINVAL; + if ((speed == SPEED_1000) && (!mii->supports_gmii)) + return -EINVAL; + + /* ignore supported, maxtxpkt, maxrxpkt */ + + if (cmd->base.autoneg == AUTONEG_ENABLE) { + u32 bmcr, advert, tmp; + u32 advert2 = 0, tmp2 = 0; + u32 advertising; + + ethtool_convert_link_mode_to_legacy_u32( + &advertising, cmd->link_modes.advertising); + + if ((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); + } + tmp |= ethtool_adv_to_mii_adv_t(advertising); + + if (mii->supports_gmii) + tmp2 |= ethtool_adv_to_mii_ctrl1000_t(advertising); + 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->mdio_read(dev, mii->phy_id, MII_BMCR); + bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); + mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr); + + mii->force_media = 0; + } else { + u32 bmcr, tmp; + + /* turn off auto negotiation, set speed and duplexity */ + bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); + tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | + BMCR_SPEED1000 | BMCR_FULLDPLX); + if (speed == SPEED_1000) + tmp |= BMCR_SPEED1000; + else if (speed == SPEED_100) + tmp |= BMCR_SPEED100; + if (cmd->base.duplex == DUPLEX_FULL) { + tmp |= BMCR_FULLDPLX; + mii->full_duplex = 1; + } else { + mii->full_duplex = 0; + } + if (bmcr != tmp) + mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp); + + mii->force_media = 1; + } + return 0; +} +EXPORT_SYMBOL(mii_ethtool_set_link_ksettings); + + +/** + * mii_ethtool_get_link_ksettings - get settings that are specified in @cmd + * @mii: MII interface + * @cmd: requested ethtool_link_ksettings + * + * The @cmd parameter is expected to have been cleared before calling + * mii_ethtool_get_link_ksettings(). + * + * Returns 0 for success, negative on error. + */ +int mii_ethtool_get_link_ksettings(struct mii_if_info *mii, + struct ethtool_link_ksettings *cmd) +{ + struct net_device *dev = mii->dev; + u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0; + u32 nego, supported, advertising, lp_advertising; + + supported = (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | + SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | + SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII); + if (mii->supports_gmii) + supported |= SUPPORTED_1000baseT_Half | + SUPPORTED_1000baseT_Full; + + /* only supports twisted-pair */ + cmd->base.port = PORT_MII; + + /* this isn't fully supported at higher layers */ + cmd->base.phy_address = mii->phy_id; + cmd->base.mdio_support = ETH_MDIO_SUPPORTS_C22; + + 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) { + advertising |= ADVERTISED_Autoneg; + cmd->base.autoneg = AUTONEG_ENABLE; + + advertising |= mii_get_an(mii, MII_ADVERTISE); + if (mii->supports_gmii) + advertising |= mii_ctrl1000_to_ethtool_adv_t(ctrl1000); + + if (bmsr & BMSR_ANEGCOMPLETE) { + lp_advertising = mii_get_an(mii, MII_LPA); + lp_advertising |= + mii_stat1000_to_ethtool_lpa_t(stat1000); + } else { + lp_advertising = 0; + } + + nego = advertising & lp_advertising; + + if (nego & (ADVERTISED_1000baseT_Full | + ADVERTISED_1000baseT_Half)) { + cmd->base.speed = SPEED_1000; + cmd->base.duplex = !!(nego & ADVERTISED_1000baseT_Full); + } else if (nego & (ADVERTISED_100baseT_Full | + ADVERTISED_100baseT_Half)) { + cmd->base.speed = SPEED_100; + cmd->base.duplex = !!(nego & ADVERTISED_100baseT_Full); + } else { + cmd->base.speed = SPEED_10; + cmd->base.duplex = !!(nego & ADVERTISED_10baseT_Full); + } + } else { + cmd->base.autoneg = AUTONEG_DISABLE; + + cmd->base.speed = ((bmcr & BMCR_SPEED1000 && + (bmcr & BMCR_SPEED100) == 0) ? + SPEED_1000 : + ((bmcr & BMCR_SPEED100) ? + SPEED_100 : SPEED_10)); + cmd->base.duplex = (bmcr & BMCR_FULLDPLX) ? + DUPLEX_FULL : DUPLEX_HALF; + + lp_advertising = 0; + } + + mii->full_duplex = cmd->base.duplex; + + ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, + supported); + ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising, + advertising); + ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising, + lp_advertising); + + /* ignore maxtxpkt, maxrxpkt for now */ + + return 0; +} +EXPORT_SYMBOL(mii_ethtool_get_link_ksettings); +#endif /* LINUX_VERSION_IS_GEQ(4,6,0) */ -- cgit v1.2.3