From: Andrew Isaacson <adi@broadcom.com>
Date: Thu, 20 Oct 2005 06:59:46 +0000 (-0700)
Subject: pci-expmem-hack
X-Git-Tag: v2.6.15-rc1~731^2~1^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cb4262481fce1d43ac9a483be4faf36fdd1c7abb;p=pandora-kernel.git

pci-expmem-hack

CFE 1.2.5 and earlier fails to turn on the ExpMemEn bit in the
PCIFeatureControl register, which means that DMA does not work
beyond physical address 01_0000_0000, ergo to DRAM beyond 1GB.

With ExpMemEn turned on, 01_0000_0000-0f_ffff_ffff is mapped,
so DMA works for up to 61 GB of DRAM.

Will be fixed in CFE 1.2.6 (yet to be released).

Signed-Off-By: Andy Isaacson <adi@broadcom.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

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