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82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
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* Copyright (C) 2014 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup core_arch
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* @{
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*
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* @file
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* @brief Interrupt handling interface for globally en- and disabling interrupts
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*
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* This file acts as a wrapper between the kernels interrupt interface and the architecture
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* dependent implementation of the interfaces.
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*
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* @note All functions in this module have to be implemented in a way that it
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* is safe to call them from within the context of an ISR.
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*/
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#ifndef ARCH_IRQ_ARCH_H
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#define ARCH_IRQ_ARCH_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @name Define mapping between kernel internal and arch interfaces
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*
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* This mapping is done for compatibility of existing platforms,
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* new platforms should always use the *_arch_* interfaces.
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* @{
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*/
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#ifdef COREIF_NG
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#define irq_enable irq_arch_enable
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#define irq_disable irq_arch_disable
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#define irq_restore irq_arch_restore
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#define irq_is_in irq_arch_in
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#endif
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/** @} */
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/**
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* @brief Globally enable maskable interrupt sources
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*
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* @return the IRQ state after enabling interrupts
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*/
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unsigned int irq_arch_enable(void);
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/**
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* @brief Globally disable all maskable interrupt sources
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*
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* @return the IRQ state before disabling interrupts
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*/
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unsigned int irq_arch_disable(void);
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/**
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* @brief Restore a previously recorded IRQ state
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*
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* @param[in] state the state to set the IRQ flags to
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*/
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void irq_arch_restore(unsigned int state);
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/**
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* @brief See if the current context is inside an ISR
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*
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* @return 1 if currently in interrupt context, 0 otherwise
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*/
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int irq_arch_in(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* ARCH_IRQ_ARCH_H */
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/** @} */
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