I've pushed a bunch of code for this to the linux-2.5-ocp tree. It overhauls the EMAC driver a bit and adds a number of fields to the new OCP EMAC .additions field that are set per SoC or by the board specific code. There's support for GigE on EMAC2/3, the TAH, zerocopy, and jumbo frames.
There's still work to be done on jumbo frames > 4062 MTU since the RX side requires a copy. If we get some assumptions about linear skbs in various protocol implementations removed, this can be fixed. TSO support is the only major thing unimplemented. Performance is right on par with an e1000 in the same platform, showing anywhere from 700-850Mbps TX throughput depending on MTU size and sendfile usage. RX range is slightly less. Pull from bk://source.mvista.com/linux-2.5-ocp Once the new OCP stuff goes into linux-2.5, I'll send some version of this (plus previous EMAC driver work for 2.6) to jgarzik. -Matt ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
