130 lines
2.7 KiB
C
130 lines
2.7 KiB
C
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/*
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef _ASM_MICROBLAZE_DMA_MAPPING_H
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#define _ASM_MICROBLAZE_DMA_MAPPING_H
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#include <asm/cacheflush.h>
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#include <linux/io.h>
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#include <linux/bug.h>
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struct scatterlist;
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#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
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#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
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/* FIXME */
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static inline int
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dma_supported(struct device *dev, u64 mask)
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{
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return 1;
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}
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static inline dma_addr_t
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dma_map_page(struct device *dev, struct page *page,
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unsigned long offset, size_t size,
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enum dma_data_direction direction)
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{
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BUG();
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return 0;
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}
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static inline void
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dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
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enum dma_data_direction direction)
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{
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BUG();
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}
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static inline int
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dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
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enum dma_data_direction direction)
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{
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BUG();
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return 0;
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}
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static inline void
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dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
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enum dma_data_direction direction)
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{
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BUG();
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}
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static inline void
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dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
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enum dma_data_direction direction)
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{
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BUG();
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}
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static inline void
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dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
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size_t size, enum dma_data_direction direction)
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{
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BUG();
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}
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static inline void
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dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
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enum dma_data_direction direction)
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{
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BUG();
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}
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static inline void
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dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
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enum dma_data_direction direction)
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{
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BUG();
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}
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static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
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{
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return 0;
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}
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static inline void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, int flag)
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{
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return NULL; /* consistent_alloc(flag, size, dma_handle); */
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}
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static inline void dma_free_coherent(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle)
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{
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BUG();
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}
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static inline dma_addr_t
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dma_map_single(struct device *dev, void *ptr, size_t size,
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enum dma_data_direction direction)
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{
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BUG_ON(direction == DMA_NONE);
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return virt_to_bus(ptr);
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}
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static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
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size_t size,
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enum dma_data_direction direction)
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{
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switch (direction) {
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case DMA_FROM_DEVICE:
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flush_dcache_range((unsigned)dma_addr,
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(unsigned)dma_addr + size);
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/* Fall through */
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case DMA_TO_DEVICE:
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break;
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default:
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BUG();
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}
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}
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#endif /* _ASM_MICROBLAZE_DMA_MAPPING_H */
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