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/* Copyright 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Atomic operations for Andes */
#ifndef __CROS_EC_ATOMIC_H
#define __CROS_EC_ATOMIC_H
#include "common.h"
#include "cpu.h"
#include "task.h"
static inline void atomic_clear(uint32_t volatile *addr, uint32_t bits)
{
uint32_t int_mask = get_int_mask();
interrupt_disable();
*addr &= ~bits;
set_int_mask(int_mask);
}
static inline void atomic_or(uint32_t volatile *addr, uint32_t bits)
{
uint32_t int_mask = get_int_mask();
interrupt_disable();
*addr |= bits;
set_int_mask(int_mask);
}
static inline void atomic_add(uint32_t volatile *addr, uint32_t value)
{
uint32_t int_mask = get_int_mask();
interrupt_disable();
*addr += value;
set_int_mask(int_mask);
}
static inline void atomic_sub(uint32_t volatile *addr, uint32_t value)
{
uint32_t int_mask = get_int_mask();
interrupt_disable();
*addr -= value;
set_int_mask(int_mask);
}
static inline uint32_t atomic_read_clear(uint32_t volatile *addr)
{
uint32_t val;
uint32_t int_mask = get_int_mask();
interrupt_disable();
val = *addr;
*addr = 0;
set_int_mask(int_mask);
return val;
}
#endif /* __CROS_EC_ATOMIC_H */
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