source: rtems/c/src/lib/libbsp/shared/src/irq-legacy.c @ 780428f

/**
 * @file
 *
 * @ingroup bsp_interrupt
 *
 * @brief Source file for generic BSP interrupt support legacy code.
 */

/*
 * Copyright (c) 2008
 * Embedded Brains GmbH
 * Obere Lagerstr. 30
 * D-82178 Puchheim
 * Germany
 * rtems@embedded-brains.de
 *
 * 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.
 */

#include <stdlib.h>

#include <rtems/irq.h>

#include <bsp/irq-generic.h>

typedef struct {
        rtems_irq_hdl handler;
        void *arg;
} bsp_interrupt_legacy_entry;

static void bsp_interrupt_legacy_dispatch( rtems_vector_number vector, void *arg)
{
        bsp_interrupt_legacy_entry *e = arg;
        e->handler( e->arg);
}

/**
 * @deprecated Obsolete.
 */
int BSP_get_current_rtems_irq_handler( rtems_irq_connect_data *cd)
{
        cd->hdl = NULL;
        cd->handle = NULL;
        cd->on = NULL;
        cd->off = NULL;
        cd->isOn = NULL;
}

/**
 * @deprecated Use rtems_interrupt_handler_install() instead.
 */
int BSP_install_rtems_irq_handler( const rtems_irq_connect_data *cd)
{
        rtems_status_code sc = RTEMS_SUCCESSFUL;
        bsp_interrupt_legacy_entry *e = malloc( sizeof( bsp_interrupt_legacy_entry));

        if (e == NULL) {
                return 0;
        }

        e->handler = cd->hdl;
        e->arg = cd->handle;

        sc = rtems_interrupt_handler_install(
                cd->name,
                "Unique interrupt handler (installed with obsolete BSP_install_rtems_irq_handler())",
                RTEMS_INTERRUPT_UNIQUE,
                bsp_interrupt_legacy_dispatch,
                e
        );
        if (sc != RTEMS_SUCCESSFUL) {
                free( e);
                return 0;
        }

        if (cd->on) {
                cd->on( cd);
        }

        return 1;
}

/**
 * @deprecated Use rtems_interrupt_handler_install() instead.
 */
int BSP_install_rtems_shared_irq_handler( const rtems_irq_connect_data *cd)
{
        rtems_status_code sc = RTEMS_SUCCESSFUL;
        bsp_interrupt_legacy_entry *e = malloc( sizeof( bsp_interrupt_legacy_entry));

        if (e == NULL) {
                return 0;
        }

        e->handler = cd->hdl;
        e->arg = cd->handle;

        sc = rtems_interrupt_handler_install(
                cd->name,
                "Shared interrupt handler (installed with obsolete BSP_install_rtems_shared_irq_handler())",
                RTEMS_INTERRUPT_SHARED,
                bsp_interrupt_legacy_dispatch,
                e
        );
        if (sc != RTEMS_SUCCESSFUL) {
                free( e);
                return 0;
        }

        if (cd->on) {
                cd->on( cd);
        }

        return 1;
}

/**
 * @deprecated Use rtems_interrupt_handler_remove() instead.
 */
int BSP_remove_rtems_irq_handler( const rtems_irq_connect_data *cd)
{
        rtems_status_code sc = RTEMS_SUCCESSFUL;
        bsp_interrupt_handler_entry *head = NULL;
        bsp_interrupt_handler_entry *current = NULL;
        bsp_interrupt_legacy_entry *e = NULL;

        sc = bsp_interrupt_handler_query( cd->name, head);
        if (sc != RTEMS_SUCCESSFUL) {
                return 0;
        }

        current = head;
        while (current != NULL) {
                if (current->handler == bsp_interrupt_legacy_dispatch) {
                        e = current->arg;
                        if (e->arg == cd->handle) {
                                break;
                        } else {
                                e = NULL;
                        }
                }
                current = current->next;
        }

        sc = bsp_interrupt_handler_query_free( head);
        if (sc != RTEMS_SUCCESSFUL) {
                return 0;
        }

        if (e == NULL) {
                return 0;
        }

        if (cd->off) {
                cd->off( cd);
        }
        sc = rtems_interrupt_handler_remove( cd->name, bsp_interrupt_legacy_dispatch, e);
        if (sc != RTEMS_SUCCESSFUL) {
                return 0;
        }
        return 1;
}

/**
 * @deprecated Use bsp_interrupt_initialize() instead.
 */
int BSP_rtems_irq_mngt_set( rtems_irq_global_settings *config)
{
        return 0;
}

/**
 * @deprecated Obsolete.
 */
int BSP_rtems_irq_mngt_get( rtems_irq_global_settings **config)
{
        *config = NULL;
        return 0;
}