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/* rtems/posix/intr.h
*
* This include file contains all the private support information for
* POSIX Interrupt Manager.
*
* COPYRIGHT (c) 1989-1999.
* 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.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#ifndef __RTEMS_POSIX_KEY_h
#define __RTEMS_POSIX_KEY_h
#ifdef __cplusplus
extern "C" {
#endif
#include <rtems/score/isr.h>
#include <rtems/score/object.h>
/*
* Data Structure used to manage each POSIX Interrupt Vector
*/
typedef struct {
int number_installed;
int lock_count;
int deferred_count;
Chain_Control Handlers;
} POSIX_Interrupt_Control;
/*
* Data Structure used to manage a POSIX Interrupt Handler
*/
typedef struct {
Objects_Control Object;
int is_active;
intr_t vector;
Thread_Control *server;
int (*handler)( void *area );
volatile void *user_data_area;
} POSIX_Interrupt_Handler_control;
/*
* The following defines the information control block used to manage
* this class of objects.
*/
POSIX_EXTERN Objects_Information _POSIX_Interrupt_Handlers_Information;
/*
* The following is an array which is used to manage the set of
* interrupt handlers installed on each vector.
*/
POSIX_EXTERN POSIX_Interrupt_Control
_POSIX_Interrupt_Information[ ISR_NUMBER_OF_VECTORS ];
/*
* _POSIX_Interrupt_Manager_initialization
*
* DESCRIPTION:
*
* This routine performs the initialization necessary for this manager.
*/
void _POSIX_Interrupt_Manager_initialization(
unsigned32 maximum_interrupt_handlers
);
/*
* _POSIX_Interrupt_Allocate
*
* DESCRIPTION:
*
* This function allocates a interrupt handler control block from
* the inactive chain of free interrupt handler control blocks.
*/
RTEMS_INLINE_ROUTINE POSIX_Interrupt_Handler_control *
_POSIX_Interrupt_Allocate( void );
/*
* _POSIX_Interrupt_Free
*
* DESCRIPTION:
*
* This routine frees a interrupt handler control block to the
* inactive chain of free interrupt handler control blocks.
*/
RTEMS_INLINE_ROUTINE void _POSIX_Interrupt_Free (
POSIX_Interrupt_Handler_control *the_intr
);
/*
* _POSIX_Interrupt_Get
*
* DESCRIPTION:
*
* This function maps interrupt handler IDs to interrupt handler control
* blocks. If ID corresponds to a local interrupt handler, then it returns
* the_intr control pointer which maps to ID and location
* is set to OBJECTS_LOCAL. if the interrupt handler ID is global and
* resides on a remote node, then location is set to OBJECTS_REMOTE,
* and the_intr is undefined. Otherwise, location is set
* to OBJECTS_ERROR and the_intr is undefined.
*/
RTEMS_INLINE_ROUTINE POSIX_Interrupt_Control *_POSIX_Interrupt_Get (
Objects_Id id,
Objects_Locations *location
);
/*
* _POSIX_Interrupt_Is_null
*
* DESCRIPTION:
*
* This function returns TRUE if the_intr is NULL and FALSE otherwise.
*/
RTEMS_INLINE_ROUTINE boolean _POSIX_Interrupt_Is_null (
POSIX_Interrupt_Handler_control *the_intr
);
/*
* _POSIX_Interrupt_Handler
*
* DESCRIPTION:
*
* This function XXX.
*/
void _POSIX_Interrupt_Handler(
ISR_Vector_number vector
);
#include <rtems/posix/intr.inl>
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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