1 files changed, 48 insertions, 0 deletions

diff --git a/arch/unicore32/include/mach/dma.h b/arch/unicore32/include/mach/dma.h
new file mode 100644
index 00000000000..d655c1b6e08
--- /dev/null
+++ b/arch/unicore32/include/mach/dma.h
@@ -0,0 +1,48 @@
+/*
+ * linux/arch/unicore32/include/mach/dma.h
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __MACH_PUV3_DMA_H__
+#define __MACH_PUV3_DMA_H__
+
+/*
+ * The PKUnity has six internal DMA channels.
+ */
+#define MAX_DMA_CHANNELS        6
+
+typedef enum {
+        DMA_PRIO_HIGH = 0,
+        DMA_PRIO_MEDIUM = 1,
+        DMA_PRIO_LOW = 2
+} puv3_dma_prio;
+
+/*
+ * DMA registration
+ */
+
+extern int puv3_request_dma(char *name,
+                         puv3_dma_prio prio,
+                         void (*irq_handler)(int, void *),
+                         void (*err_handler)(int, void *),
+                         void *data);
+
+extern void puv3_free_dma(int dma_ch);
+
+static inline void puv3_stop_dma(int ch)
+{
+        writel(readl(DMAC_CONFIG(ch)) & ~DMAC_CONFIG_EN, DMAC_CONFIG(ch));
+}
+
+static inline void puv3_resume_dma(int ch)
+{
+        writel(readl(DMAC_CONFIG(ch)) | DMAC_CONFIG_EN, DMAC_CONFIG(ch));
+}
+
+#endif /* __MACH_PUV3_DMA_H__ */