2 * Copyright (C) 2006 Atmel Corporation
4 * SPDX-License-Identifier: GPL-2.0+
6 #ifndef __ASM_AVR32_DMA_MAPPING_H
7 #define __ASM_AVR32_DMA_MAPPING_H
10 #include <asm/arch/cacheflush.h>
12 enum dma_data_direction {
13 DMA_BIDIRECTIONAL = 0,
17 extern void *dma_alloc_coherent(size_t len, unsigned long *handle);
19 static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
20 enum dma_data_direction dir)
22 extern void __bad_dma_data_direction(void);
25 case DMA_BIDIRECTIONAL:
26 dcache_flush_range(vaddr, len);
29 dcache_clean_range(vaddr, len);
32 dcache_invalidate_range(vaddr, len);
35 /* This will cause a linker error */
36 __bad_dma_data_direction();
39 return virt_to_phys(vaddr);
42 static inline void dma_unmap_single(volatile void *vaddr, size_t len,
48 #endif /* __ASM_AVR32_DMA_MAPPING_H */