1 files changed, 52 insertions, 0 deletions

diff --git a/include/asm-mips/mach-rc32434/dma_v.h b/include/asm-mips/mach-rc32434/dma_v.h
new file mode 100644
index 000000000000..173a9f9146cd
--- /dev/null
+++ b/include/asm-mips/mach-rc32434/dma_v.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2002 Integrated Device Technology, Inc.
+ *              All rights reserved.
+ *
+ * DMA register definition.
+ *
+ * Author : ryan.holmQVist@idt.com
+ * Date   : 20011005
+ */
+
+#ifndef _ASM_RC32434_DMA_V_H_
+#define _ASM_RC32434_DMA_V_H_
+
+#include  <asm/mach-rc32434/dma.h>
+#include  <asm/mach-rc32434/rc32434.h>
+
+#define DMA_CHAN_OFFSET         0x14
+#define IS_DMA_USED(X)          (((X) & \
+                                (DMA_DESC_FINI | DMA_DESC_DONE | DMA_DESC_TERM)) \
+                                != 0)
+#define DMA_COUNT(count)        ((count) & DMA_DESC_COUNT_MSK)
+
+#define DMA_HALT_TIMEOUT        500
+
+static inline int rc32434_halt_dma(struct dma_reg *ch)
+{
+        int timeout = 1;
+        if (__raw_readl(&ch->dmac) & DMA_CHAN_RUN_BIT) {
+                __raw_writel(0, &ch->dmac);
+                for (timeout = DMA_HALT_TIMEOUT; timeout > 0; timeout--) {
+                        if (__raw_readl(&ch->dmas) & DMA_STAT_HALT) {
+                                __raw_writel(0, &ch->dmas);
+                                break;
+                        }
+                }
+        }
+
+        return timeout ? 0 : 1;
+}
+
+static inline void rc32434_start_dma(struct dma_reg *ch, u32 dma_addr)
+{
+        __raw_writel(0, &ch->dmandptr);
+        __raw_writel(dma_addr, &ch->dmadptr);
+}
+
+static inline void rc32434_chain_dma(struct dma_reg *ch, u32 dma_addr)
+{
+        __raw_writel(dma_addr, &ch->dmandptr);
+}
+
+#endif  /* _ASM_RC32434_DMA_V_H_ */