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DMA 的代码
dma.h
/* $Id: dma.h,v 1.7 1992/12/14 00:29:34 root Exp root $
* linux/include/asm/dma.h: Defines for using and allocating dma channels.
* Written by Hennus Bergman, 1992.
* High DMA channel support & inf
dma.h
/*
* linux/include/asm-arm/arch-shark/dma.h
*
* by Alexander.Schulz@stud.uni-karlsruhe.de
*/
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H
/* Use only the lowest 4MB, nothing else works.
* T
dma.h
/*
* linux/include/asm-arm/arch-arc/dma.h
*
* Copyright (C) 1996-1998 Russell King
*
* Acorn Archimedes/A5000 architecture virtual DMA
* implementation
*
* Modifications:
* 04-04-1998 RMK Me
dma.h
/*
* linux/include/asm-arm/arch-nexuspci/dma.h
*
* Architecture DMA routines - NexusPCI has no DMA, so this file is very
* simple. :-)
*
* Copyright (C) 1998 Philip Blundell
*/
dma.h
/*
* 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
#defin
dma.h
/*
* linux/include/asm-arm/arch-ebsa110/dma.h
*
* Architecture DMA routes
*
* Copyright (C) 1997.1998 Russell King
*/
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H
/*
* This is the maximum
dma.h
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H
/*
* This is the maximum DMA address that can be DMAd to.
* There should not be more than (0xd0000000 - 0xc0000000)
* bytes of RAM.
*/
#define MA
dma.h
#ifndef __ASM_ARM_DMA_H
#define __ASM_ARM_DMA_H
typedef unsigned int dmach_t;
#include
#include
#include
#include
#include
dma.h
#ifndef __DMA_H__
#define __DMA_H__
void Test_Zdma0(void);
void Test_Zdma1(void);
//void Test_Zdma0Xdreq(void);
#endif /*__DMA_H__*/
dma.c
/**********************************************************************
CAUTION: DMA operation is being done in cache-on state NOW.
So,some read value may be not same with real memory value