45 lines
1.0 KiB
C
45 lines
1.0 KiB
C
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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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* Copyright (C) 2003 - 2005 Tensilica Inc.
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* Copyright (C) 2015 Cadence Design Systems Inc.
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*/
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#ifndef _XTENSA_DMA_MAPPING_H
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#define _XTENSA_DMA_MAPPING_H
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#include <asm/cache.h>
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#include <asm/io.h>
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#include <linux/mm.h>
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#include <linux/scatterlist.h>
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#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
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extern struct dma_map_ops xtensa_dma_map_ops;
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static inline struct dma_map_ops *get_dma_ops(struct device *dev)
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{
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if (dev && dev->archdata.dma_ops)
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return dev->archdata.dma_ops;
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else
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return &xtensa_dma_map_ops;
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}
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void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
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enum dma_data_direction direction);
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static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
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{
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return (dma_addr_t)paddr;
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}
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static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
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{
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return (phys_addr_t)daddr;
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}
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#endif /* _XTENSA_DMA_MAPPING_H */
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