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