1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2007
3*4882a593Smuzhiyun * Stelian Pop <stelian@popies.net>
4*4882a593Smuzhiyun * Lead Tech Design <www.leadtechdesign.com>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun #ifndef __ASM_ARM_DMA_MAPPING_H
9*4882a593Smuzhiyun #define __ASM_ARM_DMA_MAPPING_H
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <linux/dma-direction.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #define dma_mapping_error(x, y) 0
14*4882a593Smuzhiyun
dma_alloc_coherent(size_t len,unsigned long * handle)15*4882a593Smuzhiyun static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
16*4882a593Smuzhiyun {
17*4882a593Smuzhiyun *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
18*4882a593Smuzhiyun return (void *)*handle;
19*4882a593Smuzhiyun }
20*4882a593Smuzhiyun
dma_free_coherent(void * addr)21*4882a593Smuzhiyun static inline void dma_free_coherent(void *addr)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun free(addr);
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun
dma_map_single(volatile void * vaddr,size_t len,enum dma_data_direction dir)26*4882a593Smuzhiyun static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
27*4882a593Smuzhiyun enum dma_data_direction dir)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun return (unsigned long)vaddr;
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
dma_unmap_single(volatile void * vaddr,size_t len,unsigned long paddr)32*4882a593Smuzhiyun static inline void dma_unmap_single(volatile void *vaddr, size_t len,
33*4882a593Smuzhiyun unsigned long paddr)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun #endif /* __ASM_ARM_DMA_MAPPING_H */
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