X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fdma-mapping.h;h=ff203c465fed260f75de3c0d80a71e7d90f101d2;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=2d80cc761a15948179fefc0abe5a686b9abc2b81;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 2d80cc761..ff203c465 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -14,12 +14,22 @@ enum dma_data_direction {
 };
 
 #define DMA_64BIT_MASK	0xffffffffffffffffULL
+#define DMA_48BIT_MASK	0x0000ffffffffffffULL
 #define DMA_40BIT_MASK	0x000000ffffffffffULL
 #define DMA_39BIT_MASK	0x0000007fffffffffULL
 #define DMA_32BIT_MASK	0x00000000ffffffffULL
 #define DMA_31BIT_MASK	0x000000007fffffffULL
 #define DMA_30BIT_MASK	0x000000003fffffffULL
 #define DMA_29BIT_MASK	0x000000001fffffffULL
+#define DMA_28BIT_MASK	0x000000000fffffffULL
+#define DMA_24BIT_MASK	0x0000000000ffffffULL
+
+static inline int valid_dma_direction(int dma_direction)
+{
+	return ((dma_direction == DMA_BIDIRECTIONAL) ||
+		(dma_direction == DMA_TO_DEVICE) ||
+		(dma_direction == DMA_FROM_DEVICE));
+}
 
 #include <asm/dma-mapping.h>