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>

1 files changed, 34 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_iudma.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_iudma.h
new file mode 100644
index 000000000000..358cf28ce2af
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_iudma.h
@@ -0,0 +1,34 @@
+#ifndef BCM63XX_IUDMA_H_
+#define BCM63XX_IUDMA_H_
+
+#include <linux/types.h>
+
+/*
+ * 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)
+
+#endif /* ! BCM63XX_IUDMA_H_ */