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-rw-r--r--cpukit/posix/src/intr.c340
1 files changed, 0 insertions, 340 deletions
diff --git a/cpukit/posix/src/intr.c b/cpukit/posix/src/intr.c
deleted file mode 100644
index 5d41a5fe52..0000000000
--- a/cpukit/posix/src/intr.c
+++ /dev/null
@@ -1,340 +0,0 @@
-/*
- * NOTE: Each task has an interrupt semaphore associated with it.
- * No matter which interrupt occurs that it has registered,
- * the same semaphore is used.
- *
- * This whole interrupt scheme may have been eliminated in a later draft.
- *
- * $Id$
- */
-
-#include <errno.h>
-#include <intr.h>
-#include <pthread.h>
-
-#include <rtems/system.h>
-#include <rtems/score/isr.h>
-#include <rtems/score/coresem.h>
-#include <rtems/score/thread.h>
-#include <rtems/score/watchdog.h>
-#include <rtems/posix/intr.h>
-#include <rtems/posix/time.h>
-#include <rtems/posix/threadsup.h>
-
-/*
- * _POSIX_Interrupt_Manager_initialization
- *
- * DESCRIPTION:
- *
- * This routine performs the initialization necessary for this manager.
- */
-
-void _POSIX_Interrupt_Manager_initialization(
- unsigned32 maximum_interrupt_handlers
-)
-{
- unsigned32 index;
- POSIX_Interrupt_Control *the_vector;
-
- _Objects_Initialize_information(
- &_POSIX_Interrupt_Handlers_Information,
- OBJECTS_POSIX_INTERRUPTS,
- FALSE,
- maximum_interrupt_handlers,
- sizeof( POSIX_Interrupt_Handler_control ),
- FALSE,
- 0,
- FALSE
- );
-
- for ( index=0 ; index < CPU_INTERRUPT_NUMBER_OF_VECTORS ; index++ ) {
- the_vector = &_POSIX_Interrupt_Information[ index ];
-
- the_vector->number_installed = 0;
- the_vector->lock_count = 0;
- the_vector->deferred_count = 0;
- _Chain_Initialize_empty( &the_vector->Handlers );
- }
-}
-
-/*PAGE
- *
- * 22.3.1 Associate a User-Written ISR with an Interrupt, P1003.4b/D8, p. 74
- */
-
-int intr_capture(
- intr_t intr,
- int (*intr_handler)( void *area ),
- volatile void *area,
- size_t areasize
-)
-{
- POSIX_Interrupt_Handler_control *the_intr;
- POSIX_Interrupt_Control *the_vector;
- POSIX_API_Thread_Support_Control *thread_support;
- proc_ptr old_handler;
-
- if ( !_ISR_Is_vector_number_valid( intr ) ||
- !_ISR_Is_valid_user_handler( intr_handler ) )
- return EINVAL;
-
- _Thread_Disable_dispatch();
-
- the_intr = _POSIX_Interrupt_Allocate();
-
- if ( !the_intr ) {
- _Thread_Enable_dispatch();
- return ENOMEM;
- }
-
- the_vector = &_POSIX_Interrupt_Information[ intr ];
-
- the_intr->vector = intr;
- the_intr->handler = intr_handler;
- the_intr->user_data_area = area;
- the_intr->server = _Thread_Executing;
- the_intr->is_active = TRUE;
-
- thread_support = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ];
- thread_support->interrupts_installed++;
-
-/* XXX should we malloc the semaphore on the fly??? if so we probably need to
- release it when the thread has released all interrupts and keep
- a count of how many it has installed. CURRENTLY NO.. ALLOCATED w/TCB
-*/
-
- /*
- * This is sufficient to have the handlers invoked in the opposite
- * order of installation. The loop invoking them can then go from
- * the front of the list to the end.
- */
-
- _Chain_Prepend( &the_vector->Handlers, &the_intr->Object.Node );
-
- if ( !the_vector->number_installed++ )
- _ISR_Install_vector(
- intr,
- (proc_ptr) _POSIX_Interrupt_Handler,
- &old_handler
- );
-
- _Objects_Open( &_POSIX_Interrupt_Handlers_Information, &the_intr->Object, 0 );
-
- /*
- * Normally, an Id would be returned here.
- */
-
- _Thread_Enable_dispatch();
-
- return 0;
-}
-
-/*PAGE
- *
- * 22.3.1 Associate a User-Written ISR with an Interrupt, P1003.4b/D8, p. 74
- */
-
-int intr_release(
- intr_t intr,
- int (*intr_handler)( void *area )
-)
-{
- boolean found;
- POSIX_Interrupt_Handler_control *the_intr;
- POSIX_Interrupt_Control *the_vector;
- POSIX_API_Thread_Support_Control *thread_support;
- Chain_Node *the_node;
-
- if ( !_ISR_Is_valid_user_handler( intr_handler ) )
- return EINVAL;
-
- _Thread_Disable_dispatch();
-
- /*
- * Since interrupt handlers do not have a user visible id, there is
- * no choice but to search the entire set of active interrupt handlers
- * to find this one.
- */
-
- found = FALSE;
-
- the_vector = &_POSIX_Interrupt_Information[ intr ];
-
- the_node = _Chain_Head( &the_vector->Handlers );
-
- for ( ; !_Chain_Is_tail( &the_vector->Handlers, the_node ) ; ) {
- the_intr = (POSIX_Interrupt_Handler_control *) the_node;
-
- if ( the_intr->handler == intr_handler ) {
- found = TRUE;
- break;
- }
- the_node = the_node->next;
- }
-
- if ( !found ) {
- _Thread_Enable_dispatch();
- return EINVAL;
- }
-
- if ( !_Thread_Is_executing( the_intr->server ) ) {
- _Thread_Enable_dispatch();
- return EINVAL; /* XXX should be ENOISR; */
- }
-
- /*
- * OK now we have found the interrupt handler and can do some work.
- */
-
- _Chain_Extract( &the_intr->Object.Node );
-
- the_intr->is_active = FALSE;
-
- the_vector->number_installed -= 1;
-
- thread_support = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ];
- thread_support->interrupts_installed--;
-
- /*
- * It is unnecessary to flush the semaphore since the handler can only
- * be "removed" by the thread which installed it. Thus it cannot be
- * blocked on the semaphore or it would not be executing this routine.
- */
-
- _Objects_Close( &_POSIX_Interrupt_Handlers_Information, &the_intr->Object );
-
- _POSIX_Interrupt_Free( the_intr );
-
- _Thread_Enable_dispatch();
-
- return 0;
-}
-
-/*PAGE
- *
- * 22.3.1 Associate a User-Written ISR with an Interrupt, P1003.4b/D8, p. 74
- */
-
-int intr_lock(
- intr_t intr
-)
-{
- POSIX_Interrupt_Control *the_vector;
-
- _Thread_Disable_dispatch();
-
- the_vector = &_POSIX_Interrupt_Information[ intr ];
-
- the_vector->lock_count++;
-
- _Thread_Enable_dispatch();
-
- return 0;
-}
-
-/*PAGE
- *
- * 22.3.1 Associate a User-Written ISR with an Interrupt, P1003.4b/D8, p. 74
- */
-
-int intr_unlock(
- intr_t intr
-)
-{
- POSIX_Interrupt_Control *the_vector;
-
- _Thread_Disable_dispatch();
-
- the_vector = &_POSIX_Interrupt_Information[ intr ];
-
- if ( !--the_vector->lock_count ) {
- while ( --the_vector->deferred_count ) {
- _POSIX_Interrupt_Handler( intr );
- }
- }
-
- _Thread_Enable_dispatch();
-
- return 0;
-}
-
-/*
- * 22.3.2 Await Interrupt Notification, P1003.4b/D8, p. 76
- */
-
-int intr_timed_wait(
- int flags,
- const struct timespec *timeout
-)
-{
- Watchdog_Interval ticks;
- POSIX_API_Thread_Support_Control *thread_support;
-
- ticks = _POSIX_Timespec_to_interval( timeout );
-
- thread_support = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ];
-
- _Thread_Disable_dispatch();
-
- _CORE_semaphore_Seize(
- &thread_support->Interrupt_Semaphore,
- 0, /* XXX does id=0 hurt in this case? */
- TRUE,
- ticks
- );
- _Thread_Enable_dispatch();
-
- return _Thread_Executing->Wait.return_code; /* XXX should be POSIX */
-}
-
-/*PAGE
- *
- * _POSIX_Interrupt_Handler
- *
- */
-
-void _POSIX_Interrupt_Handler(
- ISR_Vector_number vector
-)
-{
- POSIX_Interrupt_Handler_control *the_intr;
- POSIX_Interrupt_Control *the_vector;
- POSIX_API_Thread_Support_Control *thread_support;
- Chain_Node *the_node;
- int status;
-
- the_vector = &_POSIX_Interrupt_Information[ vector ];
-
- the_node = _Chain_Head( &the_vector->Handlers );
-
- for ( ; !_Chain_Is_tail( &the_vector->Handlers, the_node ) ; ) {
- the_intr = (POSIX_Interrupt_Handler_control *) the_node;
-
- status = (*the_intr->handler)( (void *) the_intr->user_data_area );
-
- switch ( status ) {
- case INTR_HANDLED_NOTIFY:
- thread_support = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ];
-
- _CORE_semaphore_Surrender(
- &thread_support->Interrupt_Semaphore,
- 0, /* XXX is id=0 a problem */
- 0 /* XXX is this a problem (mp support)*/
- );
- return;
-
- case INTR_HANDLED_DO_NOT_NOTIFY:
- return;
-
- case INTR_NOT_HANDLED:
- default: /* this should not happen */
- break;
- }
- the_node = the_node->next;
- }
-
- /* XXX
- *
- * This is an unhandled interrupt!!!
- */
-}
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