1 #ifndef ___ASM_SPARC_DMA_MAPPING_H
2 #define ___ASM_SPARC_DMA_MAPPING_H
4 #include <linux/scatterlist.h>
6 #include <linux/dma-debug.h>
8 #define DMA_ERROR_CODE (~(dma_addr_t)0x0)
10 int dma_supported(struct device
*dev
, u64 mask
);
12 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
13 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
15 extern struct dma_map_ops
*dma_ops
;
16 extern struct dma_map_ops
*leon_dma_ops
;
17 extern struct dma_map_ops pci32_dma_ops
;
19 extern struct bus_type pci_bus_type
;
21 static inline struct dma_map_ops
*get_dma_ops(struct device
*dev
)
23 #ifdef CONFIG_SPARC_LEON
24 if (sparc_cpu_model
== sparc_leon
)
27 #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI)
28 if (dev
->bus
== &pci_bus_type
)
29 return &pci32_dma_ops
;
34 #include <asm-generic/dma-mapping-common.h>
36 #define dma_alloc_coherent(d,s,h,f) dma_alloc_attrs(d,s,h,f,NULL)
38 static inline void *dma_alloc_attrs(struct device
*dev
, size_t size
,
39 dma_addr_t
*dma_handle
, gfp_t flag
,
40 struct dma_attrs
*attrs
)
42 struct dma_map_ops
*ops
= get_dma_ops(dev
);
45 cpu_addr
= ops
->alloc(dev
, size
, dma_handle
, flag
, attrs
);
46 debug_dma_alloc_coherent(dev
, size
, *dma_handle
, cpu_addr
);
50 #define dma_free_coherent(d,s,c,h) dma_free_attrs(d,s,c,h,NULL)
52 static inline void dma_free_attrs(struct device
*dev
, size_t size
,
53 void *cpu_addr
, dma_addr_t dma_handle
,
54 struct dma_attrs
*attrs
)
56 struct dma_map_ops
*ops
= get_dma_ops(dev
);
58 debug_dma_free_coherent(dev
, size
, cpu_addr
, dma_handle
);
59 ops
->free(dev
, size
, cpu_addr
, dma_handle
, attrs
);
62 static inline int dma_mapping_error(struct device
*dev
, dma_addr_t dma_addr
)
64 debug_dma_mapping_error(dev
, dma_addr
);
65 return (dma_addr
== DMA_ERROR_CODE
);
68 static inline int dma_set_mask(struct device
*dev
, u64 mask
)
71 if (dev
->bus
== &pci_bus_type
) {
72 if (!dev
->dma_mask
|| !dma_supported(dev
, mask
))
74 *dev
->dma_mask
= mask
;