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-rw-r--r--arch/sandbox/include/asm/dma.h43
1 files changed, 42 insertions, 1 deletions
diff --git a/arch/sandbox/include/asm/dma.h b/arch/sandbox/include/asm/dma.h
index 459536779e..cafbb7fe6a 100644
--- a/arch/sandbox/include/asm/dma.h
+++ b/arch/sandbox/include/asm/dma.h
@@ -8,6 +8,47 @@
#ifndef __ASM_DMA_H
#define __ASM_DMA_H
-/* empty*/
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <driver.h>
+
+#define DMA_ALIGNMENT 64
+
+#define dma_alloc_coherent dma_alloc_coherent
+static inline void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle)
+{
+ void *ret = xmemalign(4096, size);
+ if (dma_handle)
+ *dma_handle = (dma_addr_t)ret;
+
+ memset(ret, 0, size);
+
+ return ret;
+}
+
+#define dma_alloc_writecombine dma_alloc_writecombine
+static inline void *dma_alloc_writecombine(size_t size, dma_addr_t *dma_handle)
+{
+ return dma_alloc_coherent(size, dma_handle);
+}
+
+#define dma_free_coherent dma_free_coherent
+static inline void dma_free_coherent(void *mem, dma_addr_t dma_handle,
+ size_t size)
+{
+ free(mem);
+}
+
+#define arch_sync_dma_for_cpu arch_sync_dma_for_cpu
+static inline void arch_sync_dma_for_cpu(void *vaddr, size_t size,
+ enum dma_data_direction dir)
+{
+}
+
+#define arch_sync_dma_for_device arch_sync_dma_for_device
+static inline void arch_sync_dma_for_device(void *vaddr, size_t size,
+ enum dma_data_direction dir)
+{
+}
#endif /* __ASM_DMA_H */