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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"
typedef int atomic_t;
typedef atomic_t atomic_val_t;
static inline atomic_val_t atomic_clear_bits(atomic_t *addr, atomic_val_t bits)
{
atomic_val_t ret;
atomic_t volatile *ptr = addr;
uint32_t int_mask = read_clear_int_mask();
ret = *ptr;
*ptr &= ~bits;
set_int_mask(int_mask);
return ret;
}
static inline atomic_val_t atomic_or(atomic_t *addr, atomic_val_t bits)
{
atomic_val_t ret;
atomic_t volatile *ptr = addr;
uint32_t int_mask = read_clear_int_mask();
ret = *ptr;
*ptr |= bits;
set_int_mask(int_mask);
return ret;
}
static inline atomic_val_t atomic_add(atomic_t *addr, atomic_val_t value)
{
atomic_val_t ret;
atomic_t volatile *ptr = addr;
uint32_t int_mask = read_clear_int_mask();
ret = *ptr;
*ptr += value;
set_int_mask(int_mask);
return ret;
}
static inline atomic_val_t atomic_sub(atomic_t *addr, atomic_val_t value)
{
atomic_val_t ret;
atomic_t volatile *ptr = addr;
uint32_t int_mask = read_clear_int_mask();
ret = *ptr;
*ptr -= value;
set_int_mask(int_mask);
return ret;
}
static inline atomic_val_t atomic_clear(atomic_t *addr)
{
atomic_val_t ret;
atomic_t volatile *ptr = addr;
uint32_t int_mask = read_clear_int_mask();
ret = *ptr;
*ptr = 0;
set_int_mask(int_mask);
return ret;
}
#endif /* __CROS_EC_ATOMIC_H */
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