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2019-10-29net: add tulip (dec21143) driverSven Schnelle
This adds the basic functionality to emulate a Tulip NIC. Implemented are: - RX and TX functionality - Perfect Frame Filtering - Big/Little Endian descriptor support - 93C46 EEPROM support - LXT970 PHY Not implemented, mostly because i had no OS using these functions: - Imperfect frame filtering - General Purpose Timer - Transmit automatic polling - Boot ROM support - SIA interface - Big/Little Endian data buffer conversion Successfully tested with the following Operating Systems: - MSDOS with Microsoft Network Client 3.0 and DEC ODI drivers - HPPA Linux - Windows XP - HP-UX Signed-off-by: Sven Schnelle <svens@stackframe.org> Message-Id: <20191022155413.4619-1-svens@stackframe.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jason Wang <jasowang@redhat.com>