The RX overflow is reported in bit 2 on real hardware and Linux driver
for the same device already has this defined correctly.
This fixes frequent interrupt storms seen on RouterStation Pro boards.
Discussed with: gonzo
and deactivate_device
- Save state before attaching driver and restore it when
detaching
- Clear CLK bit after last bit of byte has been sent over
the bus providing falling edge for last byte in transfer
- Fix several places where CS0 was always assumed
- Add $FreeBSD$ to ar71xxreg.h
- Get rid of arge_fix_chain, use m_defrag like if_vr
- Rework interrupt handling routine to avoid race that lead
to disabling RX interrupts
- Enable full duplex if requested
- Properly set station MAC address
- Slightly optimize RX loop
- Initialize FILTERMATCH and FILTERMASK registers as linux driver does
