1 /*
2  * (C) Copyright 2007
3  * Stelian Pop <stelian@popies.net>
4  * Lead Tech Design <www.leadtechdesign.com>
5  *
6  * See file CREDITS for list of people who contributed to this
7  * project.
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License as
11  * published by the Free Software Foundation; either version 2 of
12  * the License, or (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22  * MA 02111-1307 USA
23  */
24 #ifndef __ASM_ARM_DMA_MAPPING_H
25 #define __ASM_ARM_DMA_MAPPING_H
26 
27 enum dma_data_direction {
28 	DMA_BIDIRECTIONAL	= 0,
29 	DMA_TO_DEVICE		= 1,
30 	DMA_FROM_DEVICE		= 2,
31 };
32 
33 static void *dma_alloc_coherent(size_t len, unsigned long *handle)
34 {
35 	*handle = (unsigned long)malloc(len);
36 	return (void *)*handle;
37 }
38 
39 static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
40 					   enum dma_data_direction dir)
41 {
42 	return (unsigned long)vaddr;
43 }
44 
45 static inline void dma_unmap_single(volatile void *vaddr, size_t len,
46 				    unsigned long paddr)
47 {
48 }
49 
50 #endif /* __ASM_ARM_DMA_MAPPING_H */
51