Merge git://www.denx.de/git/u-boot-marvell
[oweals/u-boot.git] / arch / arm / include / asm / dma-mapping.h
1 /*
2  * (C) Copyright 2007
3  * Stelian Pop <stelian@popies.net>
4  * Lead Tech Design <www.leadtechdesign.com>
5  *
6  * SPDX-License-Identifier:     GPL-2.0+
7  */
8 #ifndef __ASM_ARM_DMA_MAPPING_H
9 #define __ASM_ARM_DMA_MAPPING_H
10
11 #define dma_mapping_error(x, y) 0
12
13 enum dma_data_direction {
14         DMA_BIDIRECTIONAL       = 0,
15         DMA_TO_DEVICE           = 1,
16         DMA_FROM_DEVICE         = 2,
17 };
18
19 static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
20 {
21         *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
22         return (void *)*handle;
23 }
24
25 static inline void dma_free_coherent(void *addr)
26 {
27         free(addr);
28 }
29
30 static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
31                                            enum dma_data_direction dir)
32 {
33         return (unsigned long)vaddr;
34 }
35
36 static inline void dma_unmap_single(volatile void *vaddr, size_t len,
37                                     unsigned long paddr)
38 {
39 }
40
41 #endif /* __ASM_ARM_DMA_MAPPING_H */