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- #ifndef _ASM_SWIOTLB_H
- #define _ASM_SWTIOLB_H 1
- #include <linux/config.h>
- #include <asm/dma-mapping.h>
- /* SWIOTLB interface */
- extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr,
- size_t size, int dir);
- extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
- dma_addr_t *dma_handle, gfp_t flags);
- 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_single_range_for_cpu(struct device *hwdev,
- dma_addr_t dev_addr,
- unsigned long offset,
- size_t size, int dir);
- extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
- dma_addr_t dev_addr,
- unsigned long offset,
- 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_free_coherent (struct device *hwdev, size_t size,
- void *vaddr, dma_addr_t dma_handle);
- extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
- extern void swiotlb_init(void);
- #ifdef CONFIG_SWIOTLB
- extern int swiotlb;
- #else
- #define swiotlb 0
- #endif
- extern void pci_swiotlb_init(void);
- #endif /* _ASM_SWTIOLB_H */
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