Input: add semaphore and user count to input_dev structure;
[linux-2.6] / include / linux / dma-mapping.h
1 #ifndef _ASM_LINUX_DMA_MAPPING_H
2 #define _ASM_LINUX_DMA_MAPPING_H
3
4 #include <linux/device.h>
5 #include <linux/err.h>
6
7 /* These definitions mirror those in pci.h, so they can be used
8  * interchangeably with their PCI_ counterparts */
9 enum dma_data_direction {
10         DMA_BIDIRECTIONAL = 0,
11         DMA_TO_DEVICE = 1,
12         DMA_FROM_DEVICE = 2,
13         DMA_NONE = 3,
14 };
15
16 #define DMA_64BIT_MASK  0xffffffffffffffffULL
17 #define DMA_32BIT_MASK  0x00000000ffffffffULL
18
19 #include <asm/dma-mapping.h>
20
21 /* Backwards compat, remove in 2.7.x */
22 #define dma_sync_single         dma_sync_single_for_cpu
23 #define dma_sync_sg             dma_sync_sg_for_cpu
24
25 extern u64 dma_get_required_mask(struct device *dev);
26
27 /* flags for the coherent memory api */
28 #define DMA_MEMORY_MAP                  0x01
29 #define DMA_MEMORY_IO                   0x02
30 #define DMA_MEMORY_INCLUDES_CHILDREN    0x04
31 #define DMA_MEMORY_EXCLUSIVE            0x08
32
33 #ifndef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
34 static inline int
35 dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
36                             dma_addr_t device_addr, size_t size, int flags)
37 {
38         return 0;
39 }
40
41 static inline void
42 dma_release_declared_memory(struct device *dev)
43 {
44 }
45
46 static inline void *
47 dma_mark_declared_memory_occupied(struct device *dev,
48                                   dma_addr_t device_addr, size_t size)
49 {
50         return ERR_PTR(-EBUSY);
51 }
52 #endif
53
54 #endif
55
56