CVSROOT: /cvs
Module name: src
Changes by: m...@cvs.openbsd.org 2009/08/18 13:31:59
Modified files:
sys/arch/sgi/sgi: ip27_machdep.c ip30_machdep.c
sys/arch/sgi/xbow: xbow.h xbridge.c xbridgereg.h
Log message:
Blind support for SGI PIC PCI-X controller found on Origin 350 and Tezro
systems. PIC was supposed to be mostly XBridge compatible, but a silicon
bug prevents it from working correctly if 32 bit register writes are used,
so the xbridge(4) code now needs to issue 64 bit writes.
In order to make this a bit more transparent, rebase all widget registers to
a 8 byte boundary, and provide a few inline accessors which will do the right
thing if you want 32 bit writes.
Tested to not cause regressions on Octane, Origin 200 and Fuel; covering
Bridge < 4, Bridge >= 4 and XBridge flavours.
