BMSR_10TFDX
miicapabilities &= ~(BMSR_100TXFDX | BMSR_10TFDX);
BMSR_10TFDX,
if (sc->sc_sia_cap & BMSR_10TFDX)
sc->sc_sia_cap & BMSR_10TFDX)
sc->mii_capabilities |= (BMSR_10TFDX & ma->mii_capmask);
BMSR_10TFDX | BMSR_10THDX | BMSR_100T2FDX | BMSR_100T2HDX)
if (sc->mii_capabilities & BMSR_10TFDX) {