diff options
Diffstat (limited to 'include/asm-x86_64/swiotlb.h')
| -rw-r--r-- | include/asm-x86_64/swiotlb.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/asm-x86_64/swiotlb.h b/include/asm-x86_64/swiotlb.h new file mode 100644 index 000000000000..36293061f4ed --- /dev/null +++ b/include/asm-x86_64/swiotlb.h @@ -0,0 +1,40 @@ +#ifndef _ASM_SWIOTLB_H +#define _ASM_SWTIOLB_H 1 + +#include <linux/config.h> + +/* SWIOTLB interface */ + +extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, + int dir); +extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, + size_t size, int dir); +extern void swiotlb_sync_single_for_cpu(struct device *hwdev, + dma_addr_t dev_addr, + size_t size, int dir); +extern void swiotlb_sync_single_for_device(struct device *hwdev, + dma_addr_t dev_addr, + size_t size, int dir); +extern void swiotlb_sync_sg_for_cpu(struct device *hwdev, + struct scatterlist *sg, int nelems, + int dir); +extern void swiotlb_sync_sg_for_device(struct device *hwdev, + struct scatterlist *sg, int nelems, + int dir); +extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, + int nents, int direction); +extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, + int nents, int direction); +extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr); +extern void *swiotlb_alloc_coherent (struct device *hwdev, size_t size, + dma_addr_t *dma_handle, int flags); +extern void swiotlb_free_coherent (struct device *hwdev, size_t size, + void *vaddr, dma_addr_t dma_handle); + +#ifdef CONFIG_SWIOTLB +extern int swiotlb; +#else +#define swiotlb 0 +#endif + +#endif |