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sparc32: Implement more generic dma_*() interfaces.

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These dispatch to either PCI or SBUS routines based upon
the device bus type.

This will allow us to let SBUS drivers call these routines.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-08-27 18:01:36 -07:00
parent 260489fa8a
commit 944c67dff7
5 changed files with 298 additions and 6 deletions
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59
arch/sparc/include/asm/dma-mapping_32.h
View file

@ -1,11 +1,60 @@
#ifndef _ASM_SPARC_DMA_MAPPING_H
#define _ASM_SPARC_DMA_MAPPING_H
#include <linux/types.h>
#ifdef CONFIG_PCI
#include <asm-generic/dma-mapping.h>
#else
#include <asm-generic/dma-mapping-broken.h>
#endif /* PCI */
struct device;
struct scatterlist;
struct page;
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
extern int dma_supported(struct device *dev, u64 mask);
extern int dma_set_mask(struct device *dev, u64 dma_mask);
extern void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag);
extern void dma_free_coherent(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle);
extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
size_t size,
enum dma_data_direction direction);
extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
size_t size,
enum dma_data_direction direction);
extern dma_addr_t dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction);
extern void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
size_t size, enum dma_data_direction direction);
extern int dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction);
extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction);
extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
size_t size,
enum dma_data_direction direction);
extern void dma_sync_single_for_device(struct device *dev,
dma_addr_t dma_handle,
size_t size,
enum dma_data_direction direction);
extern void dma_sync_single_range_for_cpu(struct device *dev,
dma_addr_t dma_handle,
unsigned long offset,
size_t size,
enum dma_data_direction direction);
extern void dma_sync_single_range_for_device(struct device *dev,
dma_addr_t dma_handle,
unsigned long offset, size_t size,
enum dma_data_direction direction);
extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
int nelems, enum dma_data_direction direction);
extern void dma_sync_sg_for_device(struct device *dev,
struct scatterlist *sg, int nelems,
enum dma_data_direction direction);
extern int dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
extern int dma_get_cache_alignment(void);
#define dma_alloc_noncoherent dma_alloc_coherent
#define dma_free_noncoherent dma_free_coherent
#endif /* _ASM_SPARC_DMA_MAPPING_H */