ahci: Enable SB600 64bit DMA on Asus M3A
Like e65cc194 this patch enables 64bit DMA for the AHCI SATA controller of a board that has the SB600 southbridge. In this case though we're enabling 64bit DMA for the Asus M3A motherboard. It is a new enough board that all of the BIOS releases since the initial release (0301 from 2007-10-22) work correctly with 64bit DMA enabled. Signed-off-by: NMark Nelson <mdnelson8@gmail.com> Signed-off-by: NJeff Garzik <jgarzik@pobox.com>
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