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[PATCH] m68k: Add the generic dma API functions

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Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Roman Zippel
2006-06-25 05:46:56 -07:00
committed by Linus Torvalds
parent 3921ee21e0
commit b035c96b2d
6 changed files with 197 additions and 17 deletions
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include/asm-m68k/dma-mapping.h
+57 -5
View File
@@ -1,11 +1,63 @@
#ifndef _M68K_DMA_MAPPING_H
#define _M68K_DMA_MAPPING_H
struct scatterlist;
#ifdef CONFIG_PCI
#include <asm-generic/dma-mapping.h>
#else
#include <asm-generic/dma-mapping-broken.h>
#endif
static inline int dma_supported(struct device *dev, u64 mask)
{
return 1;
}
static inline int dma_set_mask(struct device *dev, u64 mask)
{
return 0;
}
extern void *dma_alloc_coherent(struct device *, size_t,
dma_addr_t *, int);
extern void dma_free_coherent(struct device *, size_t,
void *, dma_addr_t);
extern dma_addr_t dma_map_single(struct device *, void *, size_t,
enum dma_data_direction);
static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,
size_t size, enum dma_data_direction dir)
{
}
extern dma_addr_t dma_map_page(struct device *, struct page *,
unsigned long, size_t size,
enum dma_data_direction);
static inline void dma_unmap_page(struct device *dev, dma_addr_t address,
size_t size, enum dma_data_direction dir)
{
}
extern int dma_map_sg(struct device *, struct scatterlist *, int,
enum dma_data_direction);
static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
int nhwentries, enum dma_data_direction dir)
{
}
extern void dma_sync_single_for_device(struct device *, dma_addr_t, size_t,
enum dma_data_direction);
extern void dma_sync_sg_for_device(struct device *, struct scatterlist *, int,
enum dma_data_direction);
static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
size_t size, enum dma_data_direction dir)
{
}
static inline void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction dir)
{
}
static inline int dma_mapping_error(dma_addr_t handle)
{
return 0;
}
#endif /* _M68K_DMA_MAPPING_H */
include/asm-m68k/scatterlist.h
+4 -5
View File
@@ -2,18 +2,17 @@
#define _M68K_SCATTERLIST_H
struct scatterlist {
/* These two are only valid if ADDRESS member of this
* struct is NULL.
*/
struct page *page;
unsigned int offset;
unsigned int length;
__u32 dvma_address; /* A place to hang host-specific addresses at. */
__u32 dma_address; /* A place to hang host-specific addresses at. */
};
/* This is bogus and should go away. */
#define ISA_DMA_THRESHOLD (0x00ffffff)
#define sg_dma_address(sg) ((sg)->dma_address)
#define sg_dma_len(sg) ((sg)->length)
#endif /* !(_M68K_SCATTERLIST_H) */