From: Yinghai Lu <yinghai@kernel.org>
Date: Fri, 20 Mar 2009 03:55:35 +0000 (-0700)
Subject: x86/PCI: host mmconfig detect clean up
X-Git-Tag: v2.6.30-rc1~419^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=068258bc15439c11a966e873f931cc8e513dca61;p=pandora-kernel.git

x86/PCI: host mmconfig detect clean up

Fix mmconfig detection to not assume a single mmconfig space in the
northbridge, paving the way for AMD fam10h + mcp55 CPUs.  On those, the
MSR has some range, but the mcp55 pci config will have another one.

Also helps the mcp55 + io55 case, where every one will have one range.

If it is mcp55, exclude the range that is used by CPU MSR, in other
words , if the CPU claims busses 0-255, the range in mcp55 is dropped,
because CPU HW will not route those ranges to mcp55 mmconfig to handle
it.

Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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