41 строка
1.3 KiB
C
41 строка
1.3 KiB
C
#ifndef _ASM_SWIOTLB_H
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#define _ASM_SWTIOLB_H 1
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#include <linux/config.h>
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/* SWIOTLB interface */
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extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr, size_t size,
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int dir);
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extern void 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 void swiotlb_sync_single_for_cpu(struct device *hwdev,
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dma_addr_t dev_addr,
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size_t size, int dir);
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extern void swiotlb_sync_single_for_device(struct device *hwdev,
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dma_addr_t dev_addr,
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size_t size, int dir);
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extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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int dir);
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extern void swiotlb_sync_sg_for_device(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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int dir);
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extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
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int nents, int direction);
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extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
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int nents, int direction);
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extern int swiotlb_dma_mapping_error(dma_addr_t dma_addr);
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extern void *swiotlb_alloc_coherent (struct device *hwdev, size_t size,
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dma_addr_t *dma_handle, int flags);
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extern void swiotlb_free_coherent (struct device *hwdev, size_t size,
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void *vaddr, dma_addr_t dma_handle);
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#ifdef CONFIG_SWIOTLB
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extern int swiotlb;
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#else
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#define swiotlb 0
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#endif
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#endif
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