[RFC v4 1/6] MIPS: add dma_alloc_coherent()

[Antony Pavlov]

Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
---
 arch/mips/include/asm/dma-mapping.h | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
new file mode 100644
index 0000000..555efa5
--- /dev/null
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -0,0 +1,25 @@
+#ifndef _ASM_DMA_MAPPING_H
+#define _ASM_DMA_MAPPING_H
+
+#include <xfuncs.h>
+#include <asm/addrspace.h>
+#include <asm/types.h>
+#include <malloc.h>
+
+static inline void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle)
+{
+	void *ret;
+
+	ret = xmemalign(PAGE_SIZE, size);
+
+	*dma_handle = CPHYSADDR(ret);
+
+	return (void *)CKSEG1ADDR(ret);
+}
+
+static inline void dma_free_coherent(void *vaddr)
+{
+	free(vaddr);
+}
+
+#endif /* _ASM_DMA_MAPPING_H */
-- 
1.9.2