mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 18:20:53 +07:00
9a4048a211
The mmu version of dma-mapping.h (which is dma-mapping_mm.h) is clean to be used for non-mmu setups as well. Remove dma-mapping_no.h and revert dma-mapping_mm.h to dma-mapping.h Signed-off-by: Greg Ungerer <gerg@uclinux.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
#ifndef _M68K_DMA_MAPPING_H
|
|
#define _M68K_DMA_MAPPING_H
|
|
|
|
#include <asm/cache.h>
|
|
|
|
struct scatterlist;
|
|
|
|
#ifndef CONFIG_MMU_SUN3
|
|
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;
|
|
}
|
|
|
|
static inline int dma_get_cache_alignment(void)
|
|
{
|
|
return 1 << L1_CACHE_SHIFT;
|
|
}
|
|
|
|
static inline int dma_is_consistent(struct device *dev, dma_addr_t dma_addr)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
extern void *dma_alloc_coherent(struct device *, size_t,
|
|
dma_addr_t *, gfp_t);
|
|
extern void dma_free_coherent(struct device *, size_t,
|
|
void *, dma_addr_t);
|
|
|
|
static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
|
|
dma_addr_t *handle, gfp_t flag)
|
|
{
|
|
return dma_alloc_coherent(dev, size, handle, flag);
|
|
}
|
|
static inline void dma_free_noncoherent(struct device *dev, size_t size,
|
|
void *addr, dma_addr_t handle)
|
|
{
|
|
dma_free_coherent(dev, size, addr, handle);
|
|
}
|
|
static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
/* we use coherent allocation, so not much to do here. */
|
|
}
|
|
|
|
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_range_for_device(struct device *dev,
|
|
dma_addr_t dma_handle, unsigned long offset, size_t size,
|
|
enum dma_data_direction direction)
|
|
{
|
|
/* just sync everything for now */
|
|
dma_sync_single_for_device(dev, dma_handle, offset + size, 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 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)
|
|
{
|
|
/* just sync everything for now */
|
|
dma_sync_single_for_cpu(dev, dma_handle, offset + size, direction);
|
|
}
|
|
|
|
static inline int dma_mapping_error(struct device *dev, dma_addr_t handle)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
#include <asm-generic/dma-mapping-broken.h>
|
|
#endif
|
|
|
|
#endif /* _M68K_DMA_MAPPING_H */
|