1b7026b0cSAndy Shevchenko /*
2b7026b0cSAndy Shevchenko * (C) Copyright 2007
3b7026b0cSAndy Shevchenko * Stelian Pop <stelian@popies.net>
4b7026b0cSAndy Shevchenko * Lead Tech Design <www.leadtechdesign.com>
5b7026b0cSAndy Shevchenko *
6b7026b0cSAndy Shevchenko * SPDX-License-Identifier: GPL-2.0+
7b7026b0cSAndy Shevchenko */
8b7026b0cSAndy Shevchenko #ifndef __ASM_X86_DMA_MAPPING_H
9b7026b0cSAndy Shevchenko #define __ASM_X86_DMA_MAPPING_H
10b7026b0cSAndy Shevchenko
11*9ff3d014SMasahiro Yamada #include <linux/dma-direction.h>
12b7026b0cSAndy Shevchenko
13*9ff3d014SMasahiro Yamada #define dma_mapping_error(x, y) 0
14b7026b0cSAndy Shevchenko
dma_alloc_coherent(size_t len,unsigned long * handle)15b7026b0cSAndy Shevchenko static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
16b7026b0cSAndy Shevchenko {
17b7026b0cSAndy Shevchenko *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
18b7026b0cSAndy Shevchenko return (void *)*handle;
19b7026b0cSAndy Shevchenko }
20b7026b0cSAndy Shevchenko
dma_free_coherent(void * addr)21b7026b0cSAndy Shevchenko static inline void dma_free_coherent(void *addr)
22b7026b0cSAndy Shevchenko {
23b7026b0cSAndy Shevchenko free(addr);
24b7026b0cSAndy Shevchenko }
25b7026b0cSAndy Shevchenko
dma_map_single(volatile void * vaddr,size_t len,enum dma_data_direction dir)26b7026b0cSAndy Shevchenko static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
27b7026b0cSAndy Shevchenko enum dma_data_direction dir)
28b7026b0cSAndy Shevchenko {
29b7026b0cSAndy Shevchenko return (unsigned long)vaddr;
30b7026b0cSAndy Shevchenko }
31b7026b0cSAndy Shevchenko
dma_unmap_single(volatile void * vaddr,size_t len,unsigned long paddr)32b7026b0cSAndy Shevchenko static inline void dma_unmap_single(volatile void *vaddr, size_t len,
33b7026b0cSAndy Shevchenko unsigned long paddr)
34b7026b0cSAndy Shevchenko {
35b7026b0cSAndy Shevchenko }
36b7026b0cSAndy Shevchenko
37b7026b0cSAndy Shevchenko #endif /* __ASM_X86_DMA_MAPPING_H */
38