/**************************************************************************** * arch/arm/include/irq.h * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you 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 should never be included directly but, rather, only indirectly * through nuttx/irq.h */ #ifndef __ARCH_ARM_INCLUDE_IRQ_H #define __ARCH_ARM_INCLUDE_IRQ_H /**************************************************************************** * Included Files ****************************************************************************/ #include #ifndef __ASSEMBLY__ # include #endif /**************************************************************************** * Public Function Prototypes ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ /* Include chip-specific IRQ definitions (including IRQ numbers) */ #include /* Include NuttX-specific IRQ definitions */ #include /* Include ARM architecture-specific IRQ definitions (including register * save structure and up_irq_save()/up_irq_restore() functions) */ #if defined(CONFIG_ARCH_ARMV7A) # include #elif defined(CONFIG_ARCH_ARMV7R) # include #elif defined(CONFIG_ARCH_ARMV8R) # include #elif defined(CONFIG_ARCH_ARMV7M) # include #elif defined(CONFIG_ARCH_ARMV8M) # include #elif defined(CONFIG_ARCH_ARMV6M) # include #else # include #endif /**************************************************************************** * Pre-processor Prototypes ****************************************************************************/ #ifndef __ASSEMBLY__ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /**************************************************************************** * Public Data ****************************************************************************/ /* g_current_regs[] holds a references to the current interrupt level * register storage structure. It is non-NULL only during interrupt * processing. Access to g_current_regs[] must be through the macro * CURRENT_REGS for portability. */ /* For the case of architectures with multiple CPUs, then there must be one * such value for each processor that can receive an interrupt. */ EXTERN volatile uint32_t *g_current_regs[CONFIG_SMP_NCPUS]; #define CURRENT_REGS (g_current_regs[up_cpu_index()]) /**************************************************************************** * Public Function Prototypes ****************************************************************************/ /**************************************************************************** * Inline functions ****************************************************************************/ /**************************************************************************** * Name: up_interrupt_context * * Description: * Return true is we are currently executing in the interrupt * handler context. * ****************************************************************************/ noinstrument_function static inline bool up_interrupt_context(void) { #ifdef CONFIG_SMP irqstate_t flags = up_irq_save(); #endif bool ret = CURRENT_REGS != NULL; #ifdef CONFIG_SMP up_irq_restore(flags); #endif return ret; } #endif /* __ASSEMBLY__ */ #undef EXTERN #ifdef __cplusplus } #endif #endif /* __ARCH_ARM_INCLUDE_IRQ_H */