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