1 files changed, 103 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-rc32434/dma.h b/arch/mips/include/asm/mach-rc32434/dma.h
new file mode 100644
index 000000000000..5f898b5873f7
--- /dev/null
+++ b/arch/mips/include/asm/mach-rc32434/dma.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2002 Integrated Device Technology, Inc.
+ *              All rights reserved.
+ *
+ * DMA register definition.
+ *
+ * Author : ryan.holmQVist@idt.com
+ * Date   : 20011005
+ */
+
+#ifndef __ASM_RC32434_DMA_H
+#define __ASM_RC32434_DMA_H
+
+#include <asm/mach-rc32434/rb.h>
+
+#define DMA0_BASE_ADDR                  0x18040000
+
+/*
+ * DMA descriptor (in physical memory).
+ */
+
+struct dma_desc {
+        u32 control;                    /* Control. use DMAD_* */
+        u32 ca;                         /* Current Address. */
+        u32 devcs;                      /* Device control and status. */
+        u32 link;                       /* Next descriptor in chain. */
+};
+
+#define DMA_DESC_SIZ                    sizeof(struct dma_desc)
+#define DMA_DESC_COUNT_BIT              0
+#define DMA_DESC_COUNT_MSK              0x0003ffff
+#define DMA_DESC_DS_BIT                 20
+#define DMA_DESC_DS_MSK                 0x00300000
+
+#define DMA_DESC_DEV_CMD_BIT            22
+#define DMA_DESC_DEV_CMD_MSK            0x01c00000
+
+/* DMA command sizes */
+#define DMA_DESC_DEV_CMD_BYTE           0
+#define DMA_DESC_DEV_CMD_HLF_WD         1
+#define DMA_DESC_DEV_CMD_WORD           2
+#define DMA_DESC_DEV_CMD_2WORDS         3
+#define DMA_DESC_DEV_CMD_4WORDS         4
+#define DMA_DESC_DEV_CMD_6WORDS         5
+#define DMA_DESC_DEV_CMD_8WORDS         6
+#define DMA_DESC_DEV_CMD_16WORDS        7
+
+/* DMA descriptors interrupts */
+#define DMA_DESC_COF                    (1 << 25) /* Chain on finished */
+#define DMA_DESC_COD                    (1 << 26) /* Chain on done */
+#define DMA_DESC_IOF                    (1 << 27) /* Interrupt on finished */
+#define DMA_DESC_IOD                    (1 << 28) /* Interrupt on done */
+#define DMA_DESC_TERM                   (1 << 29) /* Terminated */
+#define DMA_DESC_DONE                   (1 << 30) /* Done */
+#define DMA_DESC_FINI                   (1 << 31) /* Finished */
+
+/*
+ * DMA register (within Internal Register Map).
+ */
+
+struct dma_reg {
+        u32 dmac;               /* Control. */
+        u32 dmas;               /* Status. */
+        u32 dmasm;              /* Mask. */
+        u32 dmadptr;            /* Descriptor pointer. */
+        u32 dmandptr;           /* Next descriptor pointer. */
+};
+
+/* DMA channels specific registers */
+#define DMA_CHAN_RUN_BIT                (1 << 0)
+#define DMA_CHAN_DONE_BIT               (1 << 1)
+#define DMA_CHAN_MODE_BIT               (1 << 2)
+#define DMA_CHAN_MODE_MSK               0x0000000c
+#define  DMA_CHAN_MODE_AUTO             0
+#define  DMA_CHAN_MODE_BURST            1
+#define  DMA_CHAN_MODE_XFRT             2
+#define  DMA_CHAN_MODE_RSVD             3
+#define DMA_CHAN_ACT_BIT                (1 << 4)
+
+/* DMA status registers */
+#define DMA_STAT_FINI                   (1 << 0)
+#define DMA_STAT_DONE                   (1 << 1)
+#define DMA_STAT_CHAIN                  (1 << 2)
+#define DMA_STAT_ERR                    (1 << 3)
+#define DMA_STAT_HALT                   (1 << 4)
+
+/*
+ * DMA channel definitions
+ */
+
+#define DMA_CHAN_ETH_RCV                0
+#define DMA_CHAN_ETH_XMT                1
+#define DMA_CHAN_MEM_TO_FIFO            2
+#define DMA_CHAN_FIFO_TO_MEM            3
+#define DMA_CHAN_PCI_TO_MEM             4
+#define DMA_CHAN_MEM_TO_PCI             5
+#define DMA_CHAN_COUNT                  6
+
+struct dma_channel {
+        struct dma_reg ch[DMA_CHAN_COUNT];
+};
+
+#endif  /* __ASM_RC32434_DMA_H */