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DMA 的代码
dma.opt
### uVision2 Project, (C) Keil Software
### Do not modify !
cExt (*.c)
aExt (*.s*; *.src; *.a*)
oExt (*.obj)
lExt (*.lib)
tExt (*.txt; *.h; *.inc)
pExt (*.plm)
CppX (*.cpp)
DaveTm {
dma.opt
### uVision2 Project, (C) Keil Software
### Do not modify !
cExt (*.c)
aExt (*.s*; *.src; *.a*)
oExt (*.obj)
lExt (*.lib)
tExt (*.txt; *.h; *.inc)
pExt (*.plm)
CppX (*.cpp)
DaveTm {
dma.opt
### uVision2 Project, (C) Keil Software
### Do not modify !
cExt (*.c)
aExt (*.s*; *.src; *.a*)
oExt (*.obj)
lExt (*.lib)
tExt (*.txt; *.h; *.inc)
pExt (*.plm)
CppX (*.cpp)
DaveTm {
dma.opt
### uVision2 Project, (C) Keil Software
### Do not modify !
cExt (*.c)
aExt (*.s*; *.src; *.a*)
oExt (*.obj)
lExt (*.lib)
tExt (*.txt; *.h; *.inc)
pExt (*.plm)
CppX (*.cpp)
DaveTm {
dma.h
int setup_dma(int chan, int32 physaddr, uint length,int mode);
uint dma_cnt(int chan);
int dma_disable(int chan);
int dma_enable(int chan);
int32 dma_malloc(int *,unsigned,int);
void dma_free(voi
dma.c
/* PC DMA support functions for DJGPP. Copyright 1996 Phil Karn */
#include
#include
#include
#include "global.h"
#include "dma.h"
#include "nospc.h"
/* I/O port ad
dma.h
/*
GazOS Operating System
Copyright (C) 1999 Gareth Owen
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
dma.c
/*
GazOS Operating System
Copyright (C) 1999 Gareth Owen
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
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