1*83d290c5STom Rini /* SPDX-License-Identifier: GPL-2.0+ */
2b7026b0cSAndy Shevchenko /*
3b7026b0cSAndy Shevchenko * (C) Copyright 2007
4b7026b0cSAndy Shevchenko * Stelian Pop <stelian@popies.net>
5b7026b0cSAndy Shevchenko * Lead Tech Design <www.leadtechdesign.com>
6b7026b0cSAndy Shevchenko */
7b7026b0cSAndy Shevchenko #ifndef __ASM_X86_DMA_MAPPING_H
8b7026b0cSAndy Shevchenko #define __ASM_X86_DMA_MAPPING_H
9b7026b0cSAndy Shevchenko
10b27af399SMasahiro Yamada #include <linux/dma-direction.h>
11b7026b0cSAndy Shevchenko
12b27af399SMasahiro Yamada #define dma_mapping_error(x, y) 0
13b7026b0cSAndy Shevchenko
dma_alloc_coherent(size_t len,unsigned long * handle)14b7026b0cSAndy Shevchenko static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
15b7026b0cSAndy Shevchenko {
16b7026b0cSAndy Shevchenko *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
17b7026b0cSAndy Shevchenko return (void *)*handle;
18b7026b0cSAndy Shevchenko }
19b7026b0cSAndy Shevchenko
dma_free_coherent(void * addr)20b7026b0cSAndy Shevchenko static inline void dma_free_coherent(void *addr)
21b7026b0cSAndy Shevchenko {
22b7026b0cSAndy Shevchenko free(addr);
23b7026b0cSAndy Shevchenko }
24b7026b0cSAndy Shevchenko
dma_map_single(volatile void * vaddr,size_t len,enum dma_data_direction dir)25b7026b0cSAndy Shevchenko static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
26b7026b0cSAndy Shevchenko enum dma_data_direction dir)
27b7026b0cSAndy Shevchenko {
28b7026b0cSAndy Shevchenko return (unsigned long)vaddr;
29b7026b0cSAndy Shevchenko }
30b7026b0cSAndy Shevchenko
dma_unmap_single(volatile void * vaddr,size_t len,unsigned long paddr)31b7026b0cSAndy Shevchenko static inline void dma_unmap_single(volatile void *vaddr, size_t len,
32b7026b0cSAndy Shevchenko unsigned long paddr)
33b7026b0cSAndy Shevchenko {
34b7026b0cSAndy Shevchenko }
35b7026b0cSAndy Shevchenko
36b7026b0cSAndy Shevchenko #endif /* __ASM_X86_DMA_MAPPING_H */
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