dspint.h

以TI 公司的OMAP5910为例

//////////////////////////////////////////////////////////////////////////
//            Copyright (C) 2004, Eyoka @ Microunit
//                           All Rights Reserved
//________________________________________________________________________
//
// FILENAME:    dspint.h
// PROJECT:     High-Resolution Video System On OMAP
// MODULE:      DSP System
// DESCRIPTION: DSP Interrupt support.
// TARGET CPU:  DSP-C55xx of OMAP5910
// VERSION:     1.1
//________________________________________________________________________
//
// REVISE HISTORY
// DATE         VERSION AUTHOR  DESCRIPTION
// 2004-10-13   1.1     Eyoka   Modify small functions as inline.
// 2004-10-13   1.0     Eyoka   First release.
//////////////////////////////////////////////////////////////////////////

#ifndef _DSPINT_H_
#define _DSPINT_H_
#include "datatypes.h"


/////////////////////////////////////////////////////////////////////
// INTERRUPT REGISTERS
/////////////////////////////////////////////////////////////////////

#define INT_IVPD		REG16(0x000049)
#define INT_IVPH		REG16(0x00004A)
#define INT_IFR0		REG16(0x000001)
#define INT_IFR1		REG16(0x000046)
#define INT_IER0		REG16(0x000000)
#define INT_IER1		REG16(0x000045)


/////////////////////////////////////////////////////////////////////
// INTERRUPT EVENTS
/////////////////////////////////////////////////////////////////////

#define INT_EVT_EMU			2
#define INT_EVT_LEVEL2		3
#define INT_EVT_TCABORT		4		
#define INT_EVT_MAILBOX1	5
//		RESERVED			6
#define INT_EVT_GPIO		7
#define	INT_EVT_TIMER3		8
#define	INT_EVT_DMA1		9
#define	INT_EVT_MPU			10
//		RESERVED			11
#define	INT_EVT_UART		12
#define	INT_EVT_WDGTIMER	13
#define	INT_EVT_DMA4		14
#define	INT_EVT_DMA5		15
#define	INT_EVT_EMIF		16
#define	INT_EVT_LOCALBUS	17
#define	INT_EVT_DMA0		18
#define	INT_EVT_MAILBOX2	19
#define	INT_EVT_DMA2		20
#define	INT_EVT_DMA3		21
#define	INT_EVT_TIMER2		22
#define	INT_EVT_TIMER1		23


/////////////////////////////////////////////////////////////////////
// INTERRUPT FUNCTIONS
/////////////////////////////////////////////////////////////////////

//___________________________________________________________________
// Function: INT_GlobalEnable
// Usage: Enable all maskable interrupts
// Parameters:
//    N/A
// Return Values:
//    N/A
//___________________________________________________________________
//
inline void INT_GlobalEnable(void)
{
	asm("	BCLR INTM");
}

//___________________________________________________________________
// Function: INT_GlobalDisable
// Usage: Disable all maskable interrupts
// Parameters:
//    N/A
// Return Values:
//    N/A
//___________________________________________________________________
//
inline void INT_GlobalDisable(void)
{
	asm("	BSET INTM");
}

//___________________________________________________________________
// Function: INT_Enable
// Usage: Enable the specified event in the IER0/1 register flags.
// Parameters:
//    event			- INT#
// Return Values:
//    N/A
//___________________________________________________________________
//
void INT_Enable(WORD event);

//___________________________________________________________________
// Function: INT_Disable
// Usage: Disable the specified event in the IER0/1 register flags.
// Parameters:
//    event			- INT#
// Return Values:
//    N/A
//___________________________________________________________________
//
void INT_Disable(WORD event);

//___________________________________________________________________
// Function: INT_EnableAll
// Usage: Mask all interrputs.
// Parameters:
//    N/A
// Return Values:
//    N/A
//___________________________________________________________________
//
inline void INT_EnableAll(void)
{
	INT_IER0 |= 0xFFFC;
	INT_IER1 |= 0x07FF;
}

//___________________________________________________________________
// Function: INT_DisableAll
// Usage: Unmask all interrputs.
// Parameters:
//    N/A
// Return Values:
//    N/A
//___________________________________________________________________
//
inline void INT_DisableAll(void)
{
	INT_IER0 &= 0x0003;
	INT_IER1 &= 0xF800;
}

//___________________________________________________________________
// Function: INT_IVT_Move
// Usage: Set Interrupt Vector Table position.
// Parameters:
//    ivpDSP		- DSP IVT, BYTE address
//    ivpHost		- ARM IVT, BYTE address
// Return Values:
//    N/A
//___________________________________________________________________
//
inline void INT_IVT_Move(DWORD ivpDSP, DWORD ivpHost)
{
	INT_IVPD = (WORD)(ivpDSP>>8);
	INT_IVPH = (WORD)(ivpHost>>8);
}

//___________________________________________________________________
// Function: INT_IVT_Insert
// Usage: Insert a new entry to Interrupt Vector Table.
// Parameters:
//    event			- INT#
//    addrISR		- BYTE address of the Interrupt Service Routine
// Return Values:
//    N/A
//___________________________________________________________________
//
void INT_IVT_Insert(WORD event, DWORD addrISR);



#endif // ifndef _DSPINT_H_