CVS: cvs.openbsd.org: src

[Owain Ainsworth <oga_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org>]

CVSROOT:	/cvs
Module name:	src
Changes by:	oga_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org	2009/02/04 18:13:21

Modified files:
	sys/arch/i386/i386: bus_dma.c pmap.c 
	sys/arch/i386/include: bus.h pmap.h 

Log message:
add MD PMAP_NOCACHE flag to i386 and use it to implement the
BUS_DMA_NOCACHE flag with guarantees that the dma memory will be mapped
uncached. Some broken/odd hardware needs this.

discussion with miod, toby, art and kettenis. ok miod.