summaryrefslogblamecommitdiff
path: root/include/asm-sparc64/dma-mapping.h
blob: a8d39f23d43b7755023541770b35e3fa1e2c88b2 (plain) (tree) 
1da177e4c3f4






42f142371e48 ^












































































































































1da177e4c3f4





970a9e73f903 ^

1da177e4c3f4














1
2
3
4
5
6

7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146

147
148
149
150
151

152

153
154
155
156
157
158
159
160
161
162
163
164
165
166






                                  











































































































































                                                                                        




                                                                       
                                                            













                                                                     
#ifndef _ASM_SPARC64_DMA_MAPPING_H
#define _ASM_SPARC64_DMA_MAPPING_H

#include <linux/config.h>

#ifdef CONFIG_PCI

/* we implement the API below in terms of the existing PCI one,
 * so include it */
#include <linux/pci.h>
/* need struct page definitions */
#include <linux/mm.h>

static inline int
dma_supported(struct device *dev, u64 mask)
{
	BUG_ON(dev->bus != &pci_bus_type);

	return pci_dma_supported(to_pci_dev(dev), mask);
}

static inline int
dma_set_mask(struct device *dev, u64 dma_mask)
{
	BUG_ON(dev->bus != &pci_bus_type);

	return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
}

static inline void *
dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
		   gfp_t flag)
{
	BUG_ON(dev->bus != &pci_bus_type);

	return pci_iommu_ops->alloc_consistent(to_pci_dev(dev), size, dma_handle, flag);
}

static inline void
dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
		    dma_addr_t dma_handle)
{
	BUG_ON(dev->bus != &pci_bus_type);

	pci_free_consistent(to_pci_dev(dev), size, cpu_addr, dma_handle);
}

static inline dma_addr_t
dma_map_single(struct device *dev, void *cpu_addr, size_t size,
	       enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	return pci_map_single(to_pci_dev(dev), cpu_addr, size, (int)direction);
}

static inline void
dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
		 enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	pci_unmap_single(to_pci_dev(dev), dma_addr, size, (int)direction);
}

static inline dma_addr_t
dma_map_page(struct device *dev, struct page *page,
	     unsigned long offset, size_t size,
	     enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	return pci_map_page(to_pci_dev(dev), page, offset, size, (int)direction);
}

static inline void
dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
	       enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	pci_unmap_page(to_pci_dev(dev), dma_address, size, (int)direction);
}

static inline int
dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
	   enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	return pci_map_sg(to_pci_dev(dev), sg, nents, (int)direction);
}

static inline void
dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
	     enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	pci_unmap_sg(to_pci_dev(dev), sg, nhwentries, (int)direction);
}

static inline void
dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
			enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	pci_dma_sync_single_for_cpu(to_pci_dev(dev), dma_handle,
				    size, (int)direction);
}

static inline void
dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
			   enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	pci_dma_sync_single_for_device(to_pci_dev(dev), dma_handle,
				       size, (int)direction);
}

static inline void
dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
		    enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	pci_dma_sync_sg_for_cpu(to_pci_dev(dev), sg, nelems, (int)direction);
}

static inline void
dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
		       enum dma_data_direction direction)
{
	BUG_ON(dev->bus != &pci_bus_type);

	pci_dma_sync_sg_for_device(to_pci_dev(dev), sg, nelems, (int)direction);
}

static inline int
dma_mapping_error(dma_addr_t dma_addr)
{
	return pci_dma_mapping_error(dma_addr);
}

#else

struct device;

static inline void *dma_alloc_coherent(struct device *dev, size_t size,
			 dma_addr_t *dma_handle, gfp_t flag)
{
	BUG();
	return NULL;
}

static inline void dma_free_coherent(struct device *dev, size_t size,
		       void *vaddr, dma_addr_t dma_handle)
{
	BUG();
}

#endif /* PCI */

#endif /* _ASM_SPARC64_DMA_MAPPING_H */