> >>On 05/10/2012 04:54 PM, Michael S. Tsirkin wrote:
> >>>On Thu, May 10, 2012 at 04:37:22PM +0800, Jason Wang wrote:
> >>>>This reverts commit ff71f2e8cacefae99179993204172bc65e4303df. This is
because
> >>>>the linux 8139cp driver would leave the card in "Config Register Write
Enable"
> >>>>mode after the eeprom were read or write ( which is unexpected in the
spec
> >>>>).
> >>>Could you show where this happens please?
> >>Hi Michael:
> >>
> >>According to the spec:
> >>"""
> >>Normal(0x00): RTL8139C(L)+ network/host communication mode.
> >>...
> >>Config. Register Write Enable(0x11): Before writing to the CONFIG0,
> >>1, 3, 4 registers, and bits 13, 12, 8 of BMCR (offset 62h-63h), the
> >>RTL8139C(L)+ must be placed in this mode. This will protect the
> >>RTL8139C(L)+ configuration from accidental change.
> >>"""
> >>So If I am reading it correctly, guest should place the card in
> >>"Normal mode" during transmission and reception. But linux driver
> >>would reset the mode to 11 after each read or write to the eeprom,
> >>see eeprom_cmd_end() in 8139cp.c.