www.pudn.com > ADS_s3c2440a.rar > Dma.c

/***************************************** 
  NAME: dma.c 
  DESC: DMA memory2memory test 
  HISTORY: 
  2003.05.15:Leon YH KIM: draft ver 0.0 
 *****************************************/ 
 
#include  
#include "def.h" 
#include "option.h" 
#include "2440addr.h" 
#include "2440lib.h" 
#include "2440slib.h"  
 
static void __irq Dma0Done(void); 
static void __irq Dma1Done(void); 
static void __irq Dma2Done(void); 
static void __irq Dma3Done(void); 
void DMA_M2M(int ch,int srcAddr,int dstAddr,int tc,int dsz,int burst); 
 
typedef struct tagDMA 
{ 
    volatile U32 DISRC;	    //0x0 
    volatile U32 DISRCC;    //0x4 
    volatile U32 DIDST;	    //0x8 
    volatile U32 DIDSTC;    //0xc 
    volatile U32 DCON;	    //0x10 
    volatile U32 DSTAT;	    //0x14 
    volatile U32 DCSRC;	    //0x18 
    volatile U32 DCDST;	    //0x1c 
    volatile U32 DMASKTRIG; //0x20 
}DMA; 
 
static volatile int dmaDone; 
 
void Test_DMA(void) 
{ 
    DMA_M2M(0,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000, 0x8000,2,1); //word,burst 
    //DMA Ch 0 
    DMA_M2M(0,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x80000,0,0); //byte,single 
    DMA_M2M(0,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x40000,1,0); //halfword,single 
    DMA_M2M(0,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x20000,2,0); //word,single 
    DMA_M2M(0,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x20000,0,1); //byte,burst 
    DMA_M2M(0,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x10000,1,1); //halfword,burst 
    DMA_M2M(0,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000, 0x8000,2,1); //word,burst 
 
    //DMA Ch 1 
    DMA_M2M(1,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x80000,0,0); //byte,single 
    DMA_M2M(1,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x40000,1,0); //halfword,single 
    DMA_M2M(1,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x20000,2,0); //word,single 
    DMA_M2M(1,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x20000,0,1); //byte,burst 
    DMA_M2M(1,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x10000,1,1); //halfword,burst 
    DMA_M2M(1,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000, 0x8000,2,1); //word,burst 
 
    //DMA Ch 2 
    DMA_M2M(2,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x80000,0,0); //byte,single 
    DMA_M2M(2,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x40000,1,0); //halfword,single 
    DMA_M2M(2,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x20000,2,0); //word,single 
    DMA_M2M(2,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x20000,0,1); //byte,burst 
    DMA_M2M(2,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x10000,1,1); //halfword,burst 
    DMA_M2M(2,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000, 0x8000,2,1); //word,burst 
 
    //DMA Ch 3 
    DMA_M2M(3,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x80000,0,0); //byte,single 
    DMA_M2M(3,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x40000,1,0); //halfword,single 
    DMA_M2M(3,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x20000,2,0); //word,single 
    DMA_M2M(3,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x20000,0,1); //byte,burst 
    DMA_M2M(3,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000,0x10000,1,1); //halfword,burst 
    DMA_M2M(3,_NONCACHE_STARTADDRESS,_NONCACHE_STARTADDRESS+0x800000, 0x8000,2,1); //word,burst    
 
} 
 
void DMA_M2M(int ch,int srcAddr,int dstAddr,int tc,int dsz,int burst) 
{ 
    int i,time; 
    volatile U32 memSum0=0,memSum1=0; 
    DMA *pDMA; 
    int length; 
     
    length=tc*(burst ? 4:1)*((dsz==0)+(dsz==1)*2+(dsz==2)*4); 
     
    Uart_Printf("[DMA%d MEM2MEM Test]\n",ch); 
 
    switch(ch) 
    { 
    case 0: 
    	pISR_DMA0=(int)Dma0Done; 
    	rINTMSK&=~(BIT_DMA0);   
    	pDMA=(void *)0x4b000000; 
    	break; 
    case 1: 
    	pISR_DMA1=(int)Dma1Done; 
    	rINTMSK&=~(BIT_DMA1);   
    	pDMA=(void *)0x4b000040; 
    	break; 
    case 2: 
	pISR_DMA2=(int)Dma2Done; 
    	rINTMSK&=~(BIT_DMA2);   
    	pDMA=(void *)0x4b000080; 
	break; 
    case 3: 
        pISR_DMA3=(int)Dma3Done; 
       	rINTMSK&=~(BIT_DMA3);   
       	pDMA=(void *)0x4b0000c0; 
        break; 
    } 
                                                                                                                             
    Uart_Printf("DMA%d %8xh->%8xh,size=%xh(tc=%xh),dsz=%d,burst=%d\n",ch, srcAddr,dstAddr,length,tc,dsz,burst); 
 
    Uart_Printf("Initialize the src.\n"); 
     
    for(i=srcAddr;i<(srcAddr+length);i+=4) 
    { 
    	*((U32 *)i)=i^0x55aa5aa5; 
    	memSum0+=i^0x55aa5aa5; 
    } 
 
    Uart_Printf("DMA%d start\n",ch); 
     
    dmaDone=0; 
     
    pDMA->DISRC=srcAddr; 
    pDMA->DISRCC=(0<<1)|(0<<0); // inc,AHB 
    pDMA->DIDST=dstAddr; 
    pDMA->DIDSTC=(0<<2) | (0<<1)|(0<<0); // inc,AHB 
    pDMA->DCON=tc|(1<<31)|(1<<30)|(1<<29)|(burst<<28)|(1<<27)|\ 
    	        (0<<23)|(1<<22)|(dsz<<20)|(tc); 
    		//HS,AHB,TC interrupt,whole, SW request mode,relaod off 
    pDMA->DMASKTRIG=(1<<1)|1; //DMA on, SW_TRIG 
 
    Timer_Start(3);//128us resolution	       
    while(dmaDone==0); 
    time=Timer_Stop(); 
     
    Uart_Printf("DMA transfer done. time=%f, %fMB/S\n",(float)time/ONESEC3, length/((float)time/ONESEC3)/1000000.); 
    rINTMSK=BIT_ALLMSK; 
     
    for(i=dstAddr;i