tree 94f0607b3ee54dfd87c7849f6666d9f68452491a
parent 67a5a59d3301949f51f2d617d689f005c6d21470
author Grant Grundler <grundler@parisc-linux.org> 1143702801 +0000
committer Kyle McMartin <kyle@hera.kernel.org> 1145658033 +0000

[PARISC] Document that we tolerate "Relaxed Ordering"

This means "DMA Read returns" can bypass "MMIO Writes".
Violating the PCI specs in this case improves outbound DMA "flows"
and is currently not required by any drivers.

This is NOT a new behavior. Previous chipsets did this
already and I believe ZX1 PDC was already setting this
for hpux. I just want to further document the behavior.

Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>