dma.h
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上传日期:2013-04-10
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- /*
- * linux/include/asm-arm/arch-ebsa285/dma.h
- *
- * Architecture DMA routines
- *
- * Copyright (C) 1998,1999 Russell King
- * Copyright (C) 1998,1999 Philip Blundell
- */
- #ifndef __ASM_ARCH_DMA_H
- #define __ASM_ARCH_DMA_H
- /*
- * This is the maximum DMA address that can be DMAd to.
- */
- #define MAX_DMA_ADDRESS 0xffffffff
- /*
- * The 21285 has two internal DMA channels; we call these 8 and 9.
- * On CATS hardware we have an additional eight ISA dma channels
- * numbered 0..7.
- */
- #define _ISA_DMA(x) (0+(x))
- #define _DC21285_DMA(x) (8+(x))
- #define MAX_DMA_CHANNELS 10
- #define DMA_FLOPPY _ISA_DMA(2)
- #define DMA_ISA_CASCADE _ISA_DMA(4)
- #endif /* _ASM_ARCH_DMA_H */