mirror of
https://github.com/AsahiLinux/u-boot
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65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
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/*
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* Copyright (C) 2006 Atmel Corporation
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#ifndef __ASM_AVR32_DMA_MAPPING_H
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#define __ASM_AVR32_DMA_MAPPING_H
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#include <asm/io.h>
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#include <asm/cacheflush.h>
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enum dma_data_direction {
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DMA_BIDIRECTIONAL = 0,
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DMA_TO_DEVICE = 1,
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DMA_FROM_DEVICE = 2,
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};
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extern void *dma_alloc_coherent(size_t len, unsigned long *handle);
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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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extern void __bad_dma_data_direction(void);
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switch (dir) {
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case DMA_BIDIRECTIONAL:
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dcache_flush_range(vaddr, len);
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break;
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case DMA_TO_DEVICE:
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dcache_clean_range(vaddr, len);
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break;
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case DMA_FROM_DEVICE:
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dcache_invalidate_range(vaddr, len);
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break;
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default:
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/* This will cause a linker error */
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__bad_dma_data_direction();
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}
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return virt_to_phys(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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#endif /* __ASM_AVR32_DMA_MAPPING_H */
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