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DMA 的代码
dma.c
/* $Id: dma.c,v 1.5 1992/11/18 02:49:05 root Exp root $
* linux/kernel/dma.c: A DMA channel allocator. Inspired by linux/kernel/irq.c.
* Written by Hennus Bergman, 1992.
*/
#include
dma.h
/*
* Copyright 2002 by Texas Instruments Incorporated.
* All rights reserved. Property of Texas Instruments Incorporated.
* Restricted rights to use, duplicate or disclose this code are
*
dma.c
#undef __DEBUG_VERSION
#include "def.h"
#include "2410addr.h"
#include "2410lib.h"
#include "2410slib.h"
#include "DMAAdmin.h"
#define DMA_CHECK_ATTR 1
typedef struct{ //can't use __pa
dma.h
#ifndef DMA_ADMIN_H
#define DMA_ADMIN_H
#define MAX_DMA_CHANNEL 4
//#define DMA_IS_USED 1
#define DMA_IS_HWTRIG 2
#define DMA_IS_SWTRIG 1
#define DMA_IS_FREE 0
// request source
#define R
dma.c
#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.h"
#include "2440slib.h"
#include "dma.h"
#define DMA_CHECK_ATTR 1
typedef struct{ //can't use __packed???
dma.h
#ifndef DMA_ADMIN_H
#define DMA_ADMIN_H
#define MAX_DMA_CHANNEL 4
//#define DMA_IS_USED 1
#define DMA_IS_HWTRIG 2
#define DMA_IS_SWTRIG 1
#define DMA_IS_FREE 0
// request source
#define R
dma.c
#include "def.h"
#include "option.h"
#include "2440addr.h"
#include "2440lib.h"
#include "2440slib.h"
#include "dma.h"
#define DMA_CHECK_ATTR 1
typedef struct{ //can't use __packed???
dma.h
#ifndef DMA_ADMIN_H
#define DMA_ADMIN_H
#define MAX_DMA_CHANNEL 4
//#define DMA_IS_USED 1
#define DMA_IS_HWTRIG 2
#define DMA_IS_SWTRIG 1
#define DMA_IS_FREE 0
// request source
#define R