blob: f1085d537d82fa7e122451ba566671e2bdf72866 (
plain) (
tree)
|
|
/**
* @file rtems/rtems/intr.h
*
* @brief Header file for the Interrupt Manager.
*
* This include file contains all the constants and structures associated with
* the Interrupt Manager.
*/
/* COPYRIGHT (c) 1989-2008.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#ifndef _RTEMS_RTEMS_INTR_H
#define _RTEMS_RTEMS_INTR_H
#ifdef __cplusplus
extern "C" {
#endif
#include <rtems/score/isr.h>
/**
* @defgroup ClassicINTR Interrupts
*
* @ingroup ClassicRTEMS
*
* This encapsulates functionality which XXX
*/
/**@{*/
/**
* @brief Interrupt level type.
*/
typedef ISR_Level rtems_interrupt_level;
/**
* @brief Control block type used to manage the vectors.
*/
typedef ISR_Vector_number rtems_vector_number;
/**
* @brief Return type for interrupt handler.
*/
typedef ISR_Handler rtems_isr;
#if (CPU_SIMPLE_VECTORED_INTERRUPTS == FALSE)
typedef ISR_Handler_entry rtems_isr_entry;
#else
/**
* @brief Interrupt handler type.
*
* @see rtems_interrupt_catch()
*/
typedef rtems_isr ( *rtems_isr_entry )(
rtems_vector_number
);
/**
* @brief Implementation of the rtems_interrupt_catch directive.
*
* This directive installs @a new_isr_handler as the RTEMS interrupt service
* routine for the interrupt vector with number @a vector. The previous RTEMS
* interrupt service routine is returned in @a 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
);
#endif
/**
* @brief Disables all maskable interrupts and returns the previous level in
* @a _isr_cookie.
*
* @note The interrupt level shall be of type @ref rtems_interrupt_level.
*/
#define rtems_interrupt_disable( _isr_cookie ) \
_ISR_Disable(_isr_cookie)
/**
* @brief Enables maskable interrupts to the level indicated by @a
* _isr_cookie.
*
* @note The interrupt level shall be of type @ref rtems_interrupt_level.
*/
#define rtems_interrupt_enable( _isr_cookie ) \
_ISR_Enable(_isr_cookie)
/**
* @brief Temporarily enables maskable interrupts to the level in @a
* _isr_cookie before redisabling them.
*
* @note The interrupt level shall be of type @ref rtems_interrupt_level.
*/
#define rtems_interrupt_flash( _isr_cookie ) \
_ISR_Flash(_isr_cookie)
/**
* @brief 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 and @b not a thread. The directives available to an interrupt
* service routine are restricted.
*/
#define rtems_interrupt_is_in_progress() \
_ISR_Is_in_progress()
/**
* @brief This routine generates an interrupt.
*
* @note No implementation.
*/
#define rtems_interrupt_cause( _interrupt_to_cause )
/**
* @brief This routine clears the specified interrupt.
*
* @note No implementation.
*/
#define rtems_interrupt_clear( _interrupt_to_clear )
#ifdef __cplusplus
}
#endif
/**@}*/
#endif
/* end of include file */
|
