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-rw-r--r--drivers/ata/sata_rcar.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c
index 629b07c452c5..178165be0c32 100644
--- a/drivers/ata/sata_rcar.c
+++ b/drivers/ata/sata_rcar.c
@@ -121,6 +121,8 @@
/* Descriptor table word 0 bit (when DTA32M = 1) */
#define SATA_RCAR_DTEND BIT(0)
+#define SATA_RCAR_DMA_BOUNDARY 0x1FFFFFFEUL
+
struct sata_rcar_priv {
void __iomem *base;
struct clk *clk;
@@ -575,7 +577,14 @@ static u8 sata_rcar_bmdma_status(struct ata_port *ap)
}
static struct scsi_host_template sata_rcar_sht = {
- ATA_BMDMA_SHT(DRV_NAME),
+ ATA_BASE_SHT(DRV_NAME),
+ /*
+ * This controller allows transfer chunks up to 512MB which cross 64KB
+ * boundaries, therefore the DMA limits are more relaxed than standard
+ * ATA SFF.
+ */
+ .sg_tablesize = ATA_MAX_PRD,
+ .dma_boundary = SATA_RCAR_DMA_BOUNDARY,
};
static struct ata_port_operations sata_rcar_port_ops = {