186 lines
4.4 KiB
C
186 lines
4.4 KiB
C
/*
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* Copyright (C) 2017 XRADIO TECHNOLOGY CO., LTD. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of XRADIO TECHNOLOGY CO., LTD. nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SYS_INTERRUPT_H_
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#define _SYS_INTERRUPT_H_
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#include "compiler.h"
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#if defined(__CC_ARM)
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/* ARM Compiler */
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/*
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* CPU interrupt mask handling.
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*/
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#define IRQMASK_REG_NAME_R primask
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#define IRQMASK_REG_NAME_W primask
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/*
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* Save the current interrupt enable state & disable IRQs
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*/
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static __always_inline unsigned long arch_irq_save(void)
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{
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unsigned long flags;
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__asm {
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mrs flags, IRQMASK_REG_NAME_R
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cpsid i
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}
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return flags;
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}
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/*
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* restore saved IRQ state
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*/
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static __always_inline void arch_irq_restore(unsigned long flags)
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{
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__asm { msr IRQMASK_REG_NAME_W, flags }
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}
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/*
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* Enable IRQs
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*/
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#define arch_irq_enable() __enable_irq()
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/*
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* Disable IRQs
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*/
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#define arch_irq_disable() __disable_irq()
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/*
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* Enable FIQs
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*/
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#define arch_fiq_enable() __enable_fiq()
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/*
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* Disable FIQs
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*/
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#define arch_fiq_disable() __disable_fiq()
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#elif defined(__GNUC__)
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/* GNU Compiler */
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#ifdef __CONFIG_OS_RTTHREAD
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/*
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* Save the current interrupt enable state & disable IRQs
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*/
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#define arch_irq_save(void) rt_hw_interrupt_disable()
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/*
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* restore saved IRQ state
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*/
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#define arch_irq_restore(flags) rt_hw_interrupt_enable(flags)
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/*
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* Enable IRQs
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*/
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#define arch_irq_enable() rt_hw_interrupt_enable(__irq_level)
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/*
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* Disable IRQs
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*/
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#define arch_irq_disable() rt_base_t __irq_level = rt_hw_interrupt_disable()
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#else /* __CONFIG_OS_RTTHREAD */
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/*
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* CPU interrupt mask handling.
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*/
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#define IRQMASK_REG_NAME_R "primask"
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#define IRQMASK_REG_NAME_W "primask"
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/*
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* Save the current interrupt enable state & disable IRQs
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*/
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static __always_inline unsigned long arch_irq_save(void)
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{
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unsigned long flags;
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__asm volatile(
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"mrs %0, " IRQMASK_REG_NAME_R "\n"
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"cpsid i"
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: "=r" (flags) : : "memory", "cc");
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return flags;
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}
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/*
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* restore saved IRQ state
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*/
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static __always_inline void arch_irq_restore(unsigned long flags)
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{
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__asm volatile(
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"msr " IRQMASK_REG_NAME_W ", %0"
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:
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: "r" (flags)
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: "memory", "cc");
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}
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/*
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* Save the current interrupt enable state.
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*/
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static __always_inline unsigned long arch_irq_get_flags(void)
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{
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unsigned long flags;
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__asm volatile(
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"mrs %0, " IRQMASK_REG_NAME_R "\n"
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: "=r" (flags) : : "memory", "cc");
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return flags;
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}
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/*
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* Enable IRQs
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*/
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#define arch_irq_enable() __asm volatile("cpsie i" : : : "memory", "cc")
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/*
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* Disable IRQs
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*/
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#define arch_irq_disable() __asm volatile("cpsid i" : : : "memory", "cc")
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/*
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* Enable FIQs
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*/
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#define arch_fiq_enable() __asm volatile("cpsie f" : : : "memory", "cc")
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/*
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* Disable FIQs
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*/
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#define arch_fiq_disable() __asm volatile("cpsid f" : : : "memory", "cc")
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#endif /* __CONFIG_OS_RTTHREAD */
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#else
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#error "Compiler not supported."
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#endif
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#endif /* _SYS_INTERRUPT_H_ */
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