diff options
author | Stefan Roese <sr@denx.de> | 2006-11-10 07:48:47 +0100 |
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committer | Stefan Roese <sr@denx.de> | 2006-11-10 07:48:47 +0100 |
commit | dfc8a9ee0040e53ada125a3c52f241e37f09cf28 (patch) | |
tree | 60fd3973150a4e6b3d9d129d117ecab71b5edabe /include/asm-avr32/dma-mapping.h | |
parent | 5c912cb1c31266c66ca59b36f9b6f87296421d75 (diff) | |
parent | 91650b3e4de688038d4f71279c44858e3e2c6870 (diff) |
Merge with /home/stefan/git/u-boot/denx
Diffstat (limited to 'include/asm-avr32/dma-mapping.h')
-rw-r--r-- | include/asm-avr32/dma-mapping.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/asm-avr32/dma-mapping.h b/include/asm-avr32/dma-mapping.h new file mode 100644 index 0000000000..3b46fa3e62 --- /dev/null +++ b/include/asm-avr32/dma-mapping.h @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2006 Atmel Corporation + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#ifndef __ASM_AVR32_DMA_MAPPING_H +#define __ASM_AVR32_DMA_MAPPING_H + +#include <asm/io.h> +#include <asm/cacheflush.h> + +enum dma_data_direction { + DMA_BIDIRECTIONAL = 0, + DMA_TO_DEVICE = 1, + DMA_FROM_DEVICE = 2, +}; +extern void *dma_alloc_coherent(size_t len, unsigned long *handle); + +static inline unsigned long dma_map_single(volatile void *vaddr, size_t len, + enum dma_data_direction dir) +{ + extern void __bad_dma_data_direction(void); + + switch (dir) { + case DMA_BIDIRECTIONAL: + dcache_flush_range(vaddr, len); + break; + case DMA_TO_DEVICE: + dcache_clean_range(vaddr, len); + break; + case DMA_FROM_DEVICE: + dcache_invalidate_range(vaddr, len); + break; + default: + /* This will cause a linker error */ + __bad_dma_data_direction(); + } + + return virt_to_phys(vaddr); +} + +static inline void dma_unmap_single(volatile void *vaddr, size_t len, + unsigned long paddr) +{ + +} + +#endif /* __ASM_AVR32_DMA_MAPPING_H */ |