164 lines
4.6 KiB
C
Executable File
164 lines
4.6 KiB
C
Executable File
/*
|
|
* 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 and disable IRQ */
|
|
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 }
|
|
}
|
|
|
|
/* Get the current interrupt enable state */
|
|
static __always_inline unsigned long arch_irq_get_flags(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
__asm { mrs flags, IRQMASK_REG_NAME_R }
|
|
return flags;
|
|
}
|
|
|
|
/* Disable IRQ, non-nested version */
|
|
#define arch_irq_disable() __disable_irq()
|
|
|
|
/* Enable IRQ, non-nested version */
|
|
#define arch_irq_enable() __enable_irq()
|
|
|
|
/* Disable FIQ, non-nested version */
|
|
#define arch_fiq_disable() __disable_fiq()
|
|
|
|
/* Enable FIQ, non-nested version */
|
|
#define arch_fiq_enable() __enable_fiq()
|
|
|
|
#elif defined(__GNUC__) /* GNU Compiler */
|
|
|
|
/*
|
|
* CPU interrupt mask handling.
|
|
*/
|
|
|
|
#define IRQMASK_REG_NAME_R "primask"
|
|
#define IRQMASK_REG_NAME_W "primask"
|
|
|
|
/* Save the current interrupt enable state and disable IRQ */
|
|
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");
|
|
}
|
|
|
|
/* Get 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;
|
|
|
|
}
|
|
|
|
/* Disable IRQ, non-nested version */
|
|
#define arch_irq_disable() __asm volatile("cpsid i" : : : "memory", "cc")
|
|
|
|
/* Enable IRQ, non-nested version */
|
|
#define arch_irq_enable() __asm volatile("cpsie i" : : : "memory", "cc")
|
|
|
|
/* Disable FIQ, non-nested version */
|
|
#define arch_fiq_disable() __asm volatile("cpsid f" : : : "memory", "cc")
|
|
|
|
/* Enable FIQ, non-nested version */
|
|
#define arch_fiq_enable() __asm volatile("cpsie f" : : : "memory", "cc")
|
|
|
|
#else
|
|
#error "Compiler not supported."
|
|
#endif
|
|
|
|
/* Disable IRQ, nested version */
|
|
void arch_irq_disable_nested(void);
|
|
|
|
/* Enable IRQ, nested version */
|
|
void arch_irq_enable_nested(void);
|
|
|
|
/* Disable FIQ, nested version */
|
|
void arch_fiq_disable_nested(void);
|
|
|
|
/* Enable FIQ, nested version */
|
|
void arch_fiq_enable_nested(void);
|
|
|
|
/* Obsoleted macros, for compatibility only */
|
|
#define xr_irq_save arch_irq_save
|
|
#define xr_irq_restore arch_irq_restore
|
|
#define arch_local_save_flags arch_irq_get_flags
|
|
#define xr_irq_disable arch_irq_disable
|
|
#define xr_irq_enable arch_irq_enable
|
|
#define xr_fiq_disable arch_fiq_disable
|
|
#define xr_fiq_enable arch_fiq_enable
|
|
|
|
#endif /* _SYS_INTERRUPT_H_ */
|