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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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A series of patches introduce a generic header file for the software IO/TLB implementation in lib/swiotlb.c. Currently each architecture using this code defines the prototypes itself. The prototypes are moved to include/linux/swiotlb.h and this file is included in architecture specific code for X86 and IA64. This patch: Create include/linux/swiotlb.h file which contains all function prototypes for the lib/swiotlb.c file. (akpm: the dependent patches will be trickled through arch trees) Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
#ifndef __LINUX_SWIOTLB_H
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#define __LINUX_SWIOTLB_H
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#include <linux/types.h>
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struct device;
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struct dma_attrs;
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struct scatterlist;
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extern void
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swiotlb_init(void);
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extern void
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*swiotlb_alloc_coherent(struct device *hwdev, size_t size,
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dma_addr_t *dma_handle, gfp_t flags);
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extern void
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swiotlb_free_coherent(struct device *hwdev, size_t size,
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void *vaddr, dma_addr_t dma_handle);
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extern dma_addr_t
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swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir);
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extern void
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swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
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size_t size, int dir);
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extern dma_addr_t
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swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size,
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int dir, struct dma_attrs *attrs);
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extern void
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swiotlb_unmap_single_attrs(struct device *hwdev, dma_addr_t dev_addr,
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size_t size, int dir, struct dma_attrs *attrs);
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extern int
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swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nents,
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int direction);
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extern void
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swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
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int direction);
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extern int
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swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
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int dir, struct dma_attrs *attrs);
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extern void
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swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
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int nelems, int dir, struct dma_attrs *attrs);
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extern void
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swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
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size_t size, int dir);
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extern void
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swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
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int nelems, int dir);
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extern void
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swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
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size_t size, int dir);
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extern void
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swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
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int nelems, int dir);
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extern void
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swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
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unsigned long offset, size_t size, int dir);
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extern void
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swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
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unsigned long offset, size_t size,
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int dir);
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extern int
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swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
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extern int
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swiotlb_dma_supported(struct device *hwdev, u64 mask);
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#endif /* __LINUX_SWIOTLB_H */
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