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Move architecture-specific includes to arch/$ARCH/include/asm
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1 /*
2  * Copyright (C) 2006 Atmel Corporation
3  *
4  * See file CREDITS for list of people who contributed to this
5  * project.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License as
9  * published by the Free Software Foundation; either version 2 of
10  * the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20  * MA 02111-1307 USA
21  */
22 #ifndef __ASM_AVR32_DMA_MAPPING_H
23 #define __ASM_AVR32_DMA_MAPPING_H
24
25 #include <asm/io.h>
26 #include <asm/arch/cacheflush.h>
27
28 enum dma_data_direction {
29         DMA_BIDIRECTIONAL       = 0,
30         DMA_TO_DEVICE           = 1,
31         DMA_FROM_DEVICE         = 2,
32 };
33 extern void *dma_alloc_coherent(size_t len, unsigned long *handle);
34
35 static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
36                                            enum dma_data_direction dir)
37 {
38         extern void __bad_dma_data_direction(void);
39
40         switch (dir) {
41         case DMA_BIDIRECTIONAL:
42                 dcache_flush_range(vaddr, len);
43                 break;
44         case DMA_TO_DEVICE:
45                 dcache_clean_range(vaddr, len);
46                 break;
47         case DMA_FROM_DEVICE:
48                 dcache_invalidate_range(vaddr, len);
49                 break;
50         default:
51                 /* This will cause a linker error */
52                 __bad_dma_data_direction();
53         }
54
55         return virt_to_phys(vaddr);
56 }
57
58 static inline void dma_unmap_single(volatile void *vaddr, size_t len,
59                                     unsigned long paddr)
60 {
61
62 }
63
64 #endif /* __ASM_AVR32_DMA_MAPPING_H */