ahci: Enable SB600 64bit DMA on Asus M3A

Like e65cc194f7628ecaa02462f22f42fb09b50dcd49 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: Mark Nelson <mdnelson8@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index fd318ac36432..389f670ee7c6 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -753,6 +753,18 @@ static bool ahci_sb600_enable_64bit(struct pci_dev *pdev)
                                 DMI_MATCH(DMI_BOARD_NAME, "MS-7376"),
                         },
                 },
+                /*
+                 * All BIOS versions for the Asus M3A support 64bit DMA.
+                 * (all release versions from 0301 to 1206 were tested)
+                 */
+                {
+                        .ident = "ASUS M3A",
+                        .matches = {
+                                DMI_MATCH(DMI_BOARD_VENDOR,
+                                          "ASUSTeK Computer INC."),
+                                DMI_MATCH(DMI_BOARD_NAME, "M3A"),
+                        },
+                },
                 { }
         };
         const struct dmi_system_id *match;