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Diffstat (limited to 'core/riscv-rv32i/atomic.h')
| -rw-r--r-- | core/riscv-rv32i/atomic.h | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/core/riscv-rv32i/atomic.h b/core/riscv-rv32i/atomic.h deleted file mode 100644 index 11765a2615..0000000000 --- a/core/riscv-rv32i/atomic.h +++ /dev/null @@ -1,55 +0,0 @@ -/* Copyright 2019 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 RISC_V */ - -#ifndef __CROS_EC_ATOMIC_H -#define __CROS_EC_ATOMIC_H - -#include "common.h" -#include "cpu.h" -#include "task.h" - -#define ATOMIC_OP(op, value, addr) \ -({ \ - uint32_t tmp; \ - asm volatile ( \ - "amo" #op ".w.aqrl %0, %2, %1" \ - : "=r" (tmp), "+A" (*addr) \ - : "r" (value)); \ -}) - -static inline void atomic_clear(volatile uint32_t *addr, uint32_t bits) -{ - ATOMIC_OP(and, ~bits, addr); -} - -static inline void atomic_or(volatile uint32_t *addr, uint32_t bits) -{ - ATOMIC_OP(or, bits, addr); -} - -static inline void atomic_add(volatile uint32_t *addr, uint32_t value) -{ - ATOMIC_OP(add, value, addr); -} - -static inline void atomic_sub(volatile uint32_t *addr, uint32_t value) -{ - ATOMIC_OP(add, -value, addr); -} - -static inline uint32_t atomic_read_clear(volatile uint32_t *addr) -{ - uint32_t ret; - - asm volatile ( - "amoand.w.aqrl %0, %2, %1" - : "=r" (ret), "+A" (*addr) - : "r" (0)); - - return ret; -} -#endif /* __CROS_EC_ATOMIC_H */ |