isr.c

QT2410的BOOTLOADER 特点 1.支援NAND FLASH读写 2.TFTP firmware upgrade 3.USB firmware upgrade 4.Fdisk

#include "isr.h"
#include "sys.h"
#define NULL 0
typedef void (*voidfun)();

//extern functions
extern void Timer0_ISR(void);
extern void UARTIrq(void);
extern void UART0_Init(void);
extern void Dma0Done(void);
extern void Dma1Done(void);
extern void Dma2Done(void);
extern void Dma3Done(void);
extern void IICInt(void);
extern void  RxPacketStatus();
extern void usbIRQ();
extern void IsrForUSBDma2(void);


//declare interrupt vector table
voidfun (IntHandlerTable)[IRQ_INT_NO] ;

// mask all interrupt
void ClrIntStatus(void)
{
    INTMSK_REG = 0xffffffff;  
    INTPND_REG = 0xffffffff; 
    rEINTMASK=0xffffff;
    rEINTPEND = 0xffffff;
}
// inital interrupt vector table
void creatIntHandlerTable(void)
{
    int i;

    for (i=0; i<IRQ_INT_NO; i++)
    {
        IntHandlerTable[i] = NULL;
    }
}
// setup interrupt vector table
void setIRQHandler(int i, voidfun isr)
{
    if ((i >= 0) && (i < IRQ_INT_NO))
    {
        IntHandlerTable[i] = isr;
    }
}
// ISR entry point
void ISR_IRQ(void)
{
    int currentIRQnumber;

    currentIRQnumber = INTOFFSET_REG;
    
    if ((currentIRQnumber >= 0) && (currentIRQnumber < IRQ_INT_NO))
    {
        if (IntHandlerTable[currentIRQnumber] != NULL)
        {
             
             Clear_SRCPendingBit(currentIRQnumber);
		     Clear_INTPendingBit(currentIRQnumber);
		     IntHandlerTable[currentIRQnumber](); 
		     //Clear_EIntPendingBit(IRQ_LAN);          
              
        }
    }
     
}

void InitIRQDevices()
{
	//initial timer0
  	Init_Timer();
  	//initial uart
  	UART0_Init();
  	
  	
}

void ExternIntDevice()
{
	//printf("EINT %2x\n\r",rEINTPEND);
	if (rEINTPEND==(1<<IRQ_LAN)) 
	{
		RxPacketStatus();
		Clear_EIntPendingBit(IRQ_LAN);
	}
	else Clear_EIntPendingBit(IRQ_LAN);
	
}

void setupIRQEnv()
{
	//mask all interrupt
  	ClrIntStatus();
    //create interrupt handler table
  	creatIntHandlerTable();
    //register interrupt
  	setIRQHandler(nTIMER0_INT, Timer0_ISR); 
  	setIRQHandler(UART0_INT, UARTIrq); 
  	//setIRQHandler(nDMA0_INT, Dma0Done);
  	//setIRQHandler(nDMA1_INT, Dma1Done);
  	setIRQHandler(nDMA2_INT, IsrForUSBDma2);
  	//setIRQHandler(nDMA3_INT, Dma3Done);
  	setIRQHandler(nIIC_INT, IICInt);
  	setIRQHandler(nEXT8_23_INT,ExternIntDevice);
  	setIRQHandler(nUSBD_INT,usbIRQ);
  	
  	
  	
  	 //enable IRQ
  	enable_IRQ();
    //enable device interrupt
    Enable_EInt(IRQ_LAN);
  	Enable_Int(nTIMER0_INT);
  	Enable_Int(UART0_INT);
  	//Enable_Int(nDMA0_INT);
  	//Enable_Int(nDMA1_INT);
  	Enable_Int(nDMA2_INT);
  	//Enable_Int(nDMA3_INT);
  	Enable_Int(nIIC_INT);
  	Enable_Int(nEXT8_23_INT);
  	Enable_Int(nUSBD_INT);
}