/* * 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 #include #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