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@@ -0,0 +1,33 @@
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+/*
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+ * Copyright (C) 2013 Andes Technology Corporation
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+ * Ken Kuo, Andes Technology Corporation <ken_kuo@andestech.com>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ */
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+#ifndef __ASM_NDS_DMA_MAPPING_H
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+#define __ASM_NDS_DMA_MAPPING_H
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+
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+enum dma_data_direction {
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+ DMA_BIDIRECTIONAL = 0,
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+ DMA_TO_DEVICE = 1,
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+ DMA_FROM_DEVICE = 2,
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+};
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+
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+static void *dma_alloc_coherent(size_t len, unsigned long *handle)
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+{
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+ *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
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+ return (void *)*handle;
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+}
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+
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+static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
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+ enum dma_data_direction dir)
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+{
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+ return (unsigned long)vaddr;
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+}
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+
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+static inline void dma_unmap_single(volatile void *vaddr, size_t len,
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+ unsigned long paddr)
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+{
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+}
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+
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+#endif /* __ASM_NDS_DMA_MAPPING_H */
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