This is a workaround because Loongson-3 has a hardware bug that it
doesn't support DMA address above 4GB.
Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx>
Signed-off-by: Hongliang Tao <taohl@xxxxxxxxxx>
Signed-off-by: Hua Yan <yanh@xxxxxxxxxx>
Cc: linux-ide@xxxxxxxxxxxxxxx
---
drivers/ata/ahci.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ebaf67e..3e3cfd8 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -183,7 +183,12 @@ static const struct ata_port_info ahci_port_info[] = {
},
[board_ahci_sb700] = /* for SB700 and SB800 */
{
+#ifndef CONFIG_CPU_LOONGSON3
AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL),
+#else
+ AHCI_HFLAGS (AHCI_HFLAG_IGN_SERR_INTERNAL |
+ AHCI_HFLAG_32BIT_ONLY),
+#endif
.flags = AHCI_FLAG_COMMON,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
--
1.7.7.3
