Actually initialize the interrupt throttling register.
Actually initialize the tx and tx absolute interrupt delay timer regs.
Update default values for the rx and tx delay timers.
Inspired by Zdenek Salvet in PR kern/29373.
Tested on macppc by HATANO Hiromichi.
Note I guess this bug could be fixed only adding one htole32(),
but I'd rather clean up endianness handling:
- Use htole32() only to accesses against DMA descriptors.
- Don't use uint32_t union member with htole32()/le32toh()
to access uint8_t/uint16_t descriptors.
- Add le32toh() in some DPRINTF.
(XXX: strictly speaking, bus_dmamap_sync() is needed for these DPRINTF)
i82546 chip has 2 Gig-E interfaces in a single chip.
The main difference is these chips have a special handshaking protocol
for accessing the EEPROM (due to the shared nature on the i82546).
