metalsvm/arch/x86/include/asm/irq.h

85 lines
2 KiB
C
Raw Permalink Normal View History

/*
* Copyright 2010 Stefan Lankes, Chair for Operating Systems,
* RWTH Aachen University
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of MetalSVM.
*/
/**
* @author Stefan Lankes
* @file arch/x86/include/asm/irq.h
* @brief Functions related to IRQs
*
* This file contains functions and a pointer type related to interrupt requests.
*/
#ifndef __ARCH_IRQ_H__
#define __ARCH_IRQ_H__
#include <metalsvm/stddef.h>
#include <metalsvm/tasks_types.h>
#ifdef __cplusplus
extern "C" {
#endif
/** @brief Pointer-type to IRQ-handling functions
*
* Whenever you write a IRQ-handling function it has to match this signature.
*/
typedef void (*irq_handler_t)(struct state *);
/** @brief Install a custom IRQ handler for a given IRQ
*
* @param irq The desired irq
* @param handler The handler to install
*/
int irq_install_handler(unsigned int irq, irq_handler_t handler);
/** @brief Clear the handler for a given IRQ
*
* @param irq The handler's IRQ
*/
int irq_uninstall_handler(unsigned int irq);
/** @brief Procedure to initialize IRQ
*
* This procedure is just a small collection of calls:
* - idt_install();
* - isrs_install();
* - irq_install();
*
* @return Just returns 0 in any case
*/
int irq_init(void);
/** @brief Disable the timer interrupt
*
* @return 0 on success
*/
int disable_timer_irq(void);
/** @brief Enable the timer interrupt
*
* @return 0 on success
*/
int enable_timer_irq(void);
#ifdef __cplusplus
}
#endif
#endif