66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2007
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* Stelian Pop <stelian@popies.net>
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* Lead Tech Design <www.leadtechdesign.com>
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*/
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#ifndef __ASM_ARM_DMA_MAPPING_H
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#define __ASM_ARM_DMA_MAPPING_H
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#include <linux/dma-direction.h>
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#define dma_mapping_error(x, y) 0
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struct device;
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static inline void *dma_alloc_coherent(struct device *dev, size_t len, dma_addr_t *handle, gfp_t flag)
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{
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(void)flag;
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//*handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
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*handle = (unsigned long)malloc(len + ARCH_DMA_MINALIGN);
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return (void *)*handle;
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}
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static inline void dma_free_coherent(struct device *dev, size_t size, void *addr, dma_addr_t handle)
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{
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free(addr);
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}
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static inline void *dmam_alloc_coherent(struct device *dev, size_t len, dma_addr_t *handle, gfp_t flag)
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{
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(void)flag;
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(void)dev;
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*handle = (dma_addr_t)malloc(len + ARCH_DMA_MINALIGN);
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return (void *)*handle;
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}
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static inline void dmam_free_coherent(struct device *dev, size_t len, void *vaddr, dma_addr_t handle)
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{
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free(vaddr);
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}
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static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
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enum dma_data_direction dir)
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{
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return (unsigned long)vaddr;
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}
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static inline void dma_unmap_single(volatile void *vaddr, size_t len,
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unsigned long paddr)
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{
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}
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static inline void dma_sync_single_for_device(struct device *dev,
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dma_addr_t addr, size_t size, enum dma_data_direction dir)
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{
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}
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static inline void dma_sync_single_for_cpu(struct device *dev,
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dma_addr_t addr, size_t size, enum dma_data_direction dir)
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{
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}
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#endif /* __ASM_ARM_DMA_MAPPING_H */
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