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- /****************************************************************************
- * sched/irq/irq_initialize.c
- *
- * Copyright (C) 2007-2008, 2010, 2018 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <nuttx/arch.h>
- #include <nuttx/irq.h>
- #include "irq/irq.h"
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- /* This is the number of entries in the interrupt vector table */
- #ifdef CONFIG_ARCH_MINIMAL_VECTORTABLE
- # define TAB_SIZE CONFIG_ARCH_NUSER_INTERRUPTS
- #else
- # define TAB_SIZE NR_IRQS
- #endif
- /****************************************************************************
- * Public Data
- ****************************************************************************/
- /* This is the interrupt vector table */
- #ifdef CONFIG_ARCH_MINIMAL_VECTORTABLE
- struct irq_info_s g_irqvector[CONFIG_ARCH_NUSER_INTERRUPTS];
- #else
- struct irq_info_s g_irqvector[NR_IRQS];
- #endif
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: irq_initialize
- *
- * Description:
- * Configure the IRQ subsystem
- *
- ****************************************************************************/
- void irq_initialize(void)
- {
- int i;
- /* Point all interrupt vectors to the unexpected interrupt */
- for (i = 0; i < TAB_SIZE; i++)
- {
- g_irqvector[i].handler = irq_unexpected_isr;
- g_irqvector[i].arg = NULL;
- #ifdef CONFIG_SCHED_IRQMONITOR
- g_irqvector[i].start = 0;
- #ifdef CONFIG_HAVE_LONG_LONG
- g_irqvector[i].count = 0;
- #else
- g_irqvector[i].mscount = 0;
- g_irqvector[i].lscount = 0;
- #endif
- g_irqvector[i].time = 0;
- #endif
- }
- #ifdef CONFIG_IRQCHAIN
- /* Initialize IRQ chain support */
- irqchain_initialize();
- #endif
- }
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