627610fcb7
i386 gets an empty function. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
#ifndef _X8664_DMA_MAPPING_H
|
|
#define _X8664_DMA_MAPPING_H 1
|
|
|
|
extern dma_addr_t bad_dma_address;
|
|
extern int iommu_merge;
|
|
|
|
static inline int dma_mapping_error(dma_addr_t dma_addr)
|
|
{
|
|
if (dma_ops->mapping_error)
|
|
return dma_ops->mapping_error(dma_addr);
|
|
|
|
return (dma_addr == bad_dma_address);
|
|
}
|
|
|
|
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
|
|
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
|
|
|
|
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
|
|
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
|
|
|
|
extern void *dma_alloc_coherent(struct device *dev, size_t size,
|
|
dma_addr_t *dma_handle, gfp_t gfp);
|
|
extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
|
|
dma_addr_t dma_handle);
|
|
|
|
#define dma_map_page(dev,page,offset,size,dir) \
|
|
dma_map_single((dev), page_address(page)+(offset), (size), (dir))
|
|
|
|
#define dma_unmap_page dma_unmap_single
|
|
|
|
static inline void
|
|
dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle,
|
|
unsigned long offset, size_t size, int direction)
|
|
{
|
|
BUG_ON(!valid_dma_direction(direction));
|
|
if (dma_ops->sync_single_range_for_device)
|
|
dma_ops->sync_single_range_for_device(hwdev, dma_handle,
|
|
offset, size, direction);
|
|
|
|
flush_write_buffers();
|
|
}
|
|
|
|
static inline void
|
|
dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
|
|
int nelems, int direction)
|
|
{
|
|
BUG_ON(!valid_dma_direction(direction));
|
|
if (dma_ops->sync_sg_for_cpu)
|
|
dma_ops->sync_sg_for_cpu(hwdev, sg, nelems, direction);
|
|
flush_write_buffers();
|
|
}
|
|
|
|
static inline void
|
|
dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
|
|
int nelems, int direction)
|
|
{
|
|
BUG_ON(!valid_dma_direction(direction));
|
|
if (dma_ops->sync_sg_for_device) {
|
|
dma_ops->sync_sg_for_device(hwdev, sg, nelems, direction);
|
|
}
|
|
|
|
flush_write_buffers();
|
|
}
|
|
|
|
extern int dma_supported(struct device *hwdev, u64 mask);
|
|
|
|
/* same for gart, swiotlb, and nommu */
|
|
static inline int dma_get_cache_alignment(void)
|
|
{
|
|
return boot_cpu_data.x86_clflush_size;
|
|
}
|
|
|
|
#define dma_is_consistent(d, h) 1
|
|
|
|
extern int dma_set_mask(struct device *dev, u64 mask);
|
|
|
|
static inline void
|
|
dma_cache_sync(struct device *dev, void *vaddr, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
flush_write_buffers();
|
|
}
|
|
|
|
extern struct device fallback_dev;
|
|
extern int panic_on_overflow;
|
|
|
|
#endif /* _X8664_DMA_MAPPING_H */
|