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DMA 的代码
dma.pjt
; Code Composer Project File, Version 2.0 (do not modify or remove this line)
[Project Settings]
ProjectName="dma"
ProjectDir="D:\Project\dsp_exp\dma\"
ProjectType=Executable
CPUFamily=TMS320C5
dma.c
/***************************************************************************
FILE NAME: DMA.C
FILE DESCRIPTION: DMA (Direct Memory Acces with the PC's DMA chip)
Sample program that demons
dma.h
int setup_dma(int chan, int32 physaddr, uint16 length,int mode);
uint16 dma_cnt(int chan);
int dma_disable(int chan);
int dma_enable(int chan);
void *dma_malloc(int32 *,unsigned short);
int dis_d
dma.c
/* PC DMA support functions. Copyright 1992 Phil Karn
*
* The functions dma_map() and dma_unmap()
* support the virtual->physical address translations required for
* PC DMA, either in a real m
dma.c
static int malloc_buffer()
{
if ((csi_data_buf = (U32 *) __get_free_pages(GFP_KERNEL, 7))) // 128 pages = 128x4K = 512K
{
dma_buf_phy_addr = virt_to_phys((void *) csi_data_buf);
dprintcsi2c("Buf
dma.h
/**************************************************************************************
*
* Project Name : S3C6400 Validation
*
* Copyright 2006 by Samsung Electronics, Inc.
* All rights reserve
dma.c
/**************************************************************************************
*
* Project Name : S3C6400 Validation
*
* Copyright 2006 by Samsung Electronics, Inc.
* All rights reserve
dma.h
#ifndef __DMA_H__
#define __DMA_H__
void Test_DMA(void);
#endif /*__DMA_H__*/