K 10
svn:author
V 6
marcel
K 8
svn:date
V 27
2013-06-23T16:58:59.986660Z
K 7
svn:log
V 929
Save the beginnings of a busdma unit test driver. The driver is to
synthesize devices with different DMA characteristics in order to test
the proper operation of the busdma infrastructure. Devices include:
1.  host controller -- this component will be focussng on platform
		properties, such as cache alignment, bounce buffering,
		deferred DMA.
2.  bridge -- this component will be focussing on mappings between CPU
		(physical) addresses and bus addresses and I/O MMUs.
3.  peripheral device -- this component will be checking the actual DMA
		operation from an endpoint device's point of view and
		subject to a wide range of constraints.

I suspect this will need some support from the busdma instrastructure
itself (via hooks or callbacks) so that the test driver has visibilty
in operations a typical device doesn't get to see. Think cache sync
operations, etc...

There's nothing here yet. Only a skeleton... and an idea.

END