MIPS: BCM63XX: Move DMA descriptor definition into common header file

The "IUDMA" engine used by bcm63xx_enet is also used by other blocks,
such as the USB 2.0 device.  Move the definitions into a common file so
that they do not need to be duplicated in each driver.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/4082/
Signed-off-by: John Crispin <blogic@openwrt.org>
diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.h b/drivers/net/ethernet/broadcom/bcm63xx_enet.h
index 0e3048b..133d585 100644
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.h
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.h
@@ -10,6 +10,7 @@
 #include <bcm63xx_regs.h>
 #include <bcm63xx_irq.h>
 #include <bcm63xx_io.h>
+#include <bcm63xx_iudma.h>
 
 /* default number of descriptor */
 #define BCMENET_DEF_RX_DESC	64
@@ -31,35 +32,6 @@
 #define BCMENET_MAX_MTU		2046
 
 /*
- * rx/tx dma descriptor
- */
-struct bcm_enet_desc {
-	u32 len_stat;
-	u32 address;
-};
-
-#define DMADESC_LENGTH_SHIFT	16
-#define DMADESC_LENGTH_MASK	(0xfff << DMADESC_LENGTH_SHIFT)
-#define DMADESC_OWNER_MASK	(1 << 15)
-#define DMADESC_EOP_MASK	(1 << 14)
-#define DMADESC_SOP_MASK	(1 << 13)
-#define DMADESC_ESOP_MASK	(DMADESC_EOP_MASK | DMADESC_SOP_MASK)
-#define DMADESC_WRAP_MASK	(1 << 12)
-
-#define DMADESC_UNDER_MASK	(1 << 9)
-#define DMADESC_APPEND_CRC	(1 << 8)
-#define DMADESC_OVSIZE_MASK	(1 << 4)
-#define DMADESC_RXER_MASK	(1 << 2)
-#define DMADESC_CRC_MASK	(1 << 1)
-#define DMADESC_OV_MASK		(1 << 0)
-#define DMADESC_ERR_MASK	(DMADESC_UNDER_MASK | \
-				DMADESC_OVSIZE_MASK | \
-				DMADESC_RXER_MASK | \
-				DMADESC_CRC_MASK | \
-				DMADESC_OV_MASK)
-
-
-/*
  * MIB Counters register definitions
 */
 #define ETH_MIB_TX_GD_OCTETS			0