atl1c:add pci map direction in atl1c_buffer flags

add pci map direction in atl1c_buffer flags, it is used when call pci_unmap
apis.
Signed-off-by: Jie Yang <jie.yang@atheros.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/atl1c/atl1c.h b/drivers/net/atl1c/atl1c.h
index a348a22..7e09084 100644
--- a/drivers/net/atl1c/atl1c.h
+++ b/drivers/net/atl1c/atl1c.h
@@ -479,6 +479,9 @@
 #define ATL1C_PCIMAP_PAGE		0x0008
 #define ATL1C_PCIMAP_TYPE_MASK		0x000C
 
+#define ATL1C_PCIMAP_TODEVICE		0x0010
+#define ATL1C_PCIMAP_FROMDEVICE		0x0020
+#define ATL1C_PCIMAP_DIRECTION_MASK	0x0030
 	dma_addr_t dma;
 };
 
@@ -487,9 +490,11 @@
 	((buff)->flags) |= (state);			\
 	} while (0)
 
-#define ATL1C_SET_PCIMAP_TYPE(buff, type) do {		\
-	((buff)->flags) &= ~ATL1C_PCIMAP_TYPE_MASK;	\
-	((buff)->flags) |= (type);			\
+#define ATL1C_SET_PCIMAP_TYPE(buff, type, direction) do {	\
+	((buff)->flags) &= ~ATL1C_PCIMAP_TYPE_MASK;		\
+	((buff)->flags) |= (type);				\
+	((buff)->flags) &= ~ATL1C_PCIMAP_DIRECTION_MASK;	\
+	((buff)->flags) |= (direction);				\
 	} while (0)
 
 /* transimit packet descriptor (tpd) ring */