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/* intr.h
*
* This include file contains all the constants and structures associated
* with the Interrupt Manager.
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#ifndef __RTEMS_INTERRUPT_h
#define __RTEMS_INTERRUPT_h
#ifdef __cplusplus
extern "C" {
#endif
#include <rtems/score/isr.h>
/*
* Interrupt level type
*/
typedef ISR_Level rtems_interrupt_level;
/*
* The following type defines the control block used to manage
* the vectors.
*/
typedef ISR_Vector_number rtems_vector_number;
/*
* Return type for ISR Handler
*/
typedef void rtems_isr;
/*
* Pointer to an ISR Handler
*/
typedef rtems_isr ( *rtems_isr_entry )(
rtems_vector_number
);
/*
* _Interrupt_Manager_initialization
*
* DESCRIPTION:
*
* This routine initializes the interrupt manager.
*
*/
void _Interrupt_Manager_initialization( void );
/*
* rtems_interrupt_catch
*
* DESCRIPTION:
*
* This routine implements the rtems_interrupt_catch directive. This
* directive installs new_isr_handler as the RTEMS interrupt service
* routine for vector. The previous RTEMS interrupt service
* routine is returned in old_isr_handler.
*/
rtems_status_code rtems_interrupt_catch(
rtems_isr_entry new_isr_handler,
rtems_vector_number vector,
rtems_isr_entry *old_isr_handler
);
/*
* rtems_interrupt_disable
*
* DESCRIPTION:
*
* This routine disables all maskable interrupts and returns the
* previous level in _isr_cookie.
*/
#define rtems_interrupt_disable( _isr_cookie ) \
_ISR_Disable(_isr_cookie)
/*
* rtems_interrupt_enable
*
* DESCRIPTION:
*
* This routine enables maskable interrupts to the level indicated
* _isr_cookie.
*/
#define rtems_interrupt_enable( _isr_cookie ) \
_ISR_Enable(_isr_cookie)
/*
* rtems_interrupt_flash
*
* DESCRIPTION:
*
* This routine temporarily enables maskable interrupts to the
* level in _isr_cookie before redisabling them.
*/
#define rtems_interrupt_flash( _isr_cookie ) \
_ISR_Flash(_isr_cookie)
/*
* rtems_interrupt_is_in_progress
*
* DESCRIPTION:
*
* This function returns TRUE if the processor is currently servicing
* an interrupt and FALSE otherwise. A return value of TRUE indicates
* that the caller is an interrupt service routine, NOT a thread. The
* directives available to an interrupt service routine are restricted.
*/
#define rtems_interrupt_is_in_progress() \
_ISR_Is_in_progress()
/*
* rtems_interrupt_cause
*
* DESCRIPTION:
*
* This routine generates an interrupt.
*
* NOTE: No implementation.
*/
#define rtems_interrupt_cause( _interrupt_to_cause )
/*
* rtems_interrupt_cause
*
* DESCRIPTION:
*
* This routine clears the specified interrupt.
*
* NOTE: No implementation.
*/
#define rtems_interrupt_clear( _interrupt_to_clear )
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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