Zephyr API Documentation 3.7.99
A Scalable Open Source RTOS
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sys-io-common.h
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1/*
2 * Copyright (c) 2021 Synopsys.
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7#ifndef ZEPHYR_INCLUDE_ARCH_ARC_SYS_IO_COMMON_H_
8#define ZEPHYR_INCLUDE_ARCH_ARC_SYS_IO_COMMON_H_
9
10#ifndef _ASMLANGUAGE
11
12#include <zephyr/toolchain.h>
13#include <zephyr/sys/sys_io.h>
15
16#include <zephyr/types.h>
17#include <stddef.h>
18
19#ifdef __cplusplus
20extern "C" {
21#endif
22
24{
25 uint8_t value;
26
27 compiler_barrier();
28 value = *(volatile uint8_t *)addr;
29 compiler_barrier();
30
31 return value;
32}
33
35{
36 compiler_barrier();
37 *(volatile uint8_t *)addr = data;
38 compiler_barrier();
39}
40
42{
43 uint16_t value;
44
45 compiler_barrier();
46 value = *(volatile uint16_t *)addr;
47 compiler_barrier();
48
49 return value;
50}
51
53{
54 compiler_barrier();
55 *(volatile uint16_t *)addr = data;
56 compiler_barrier();
57}
58
60{
61 uint32_t value;
62
63 compiler_barrier();
64 value = *(volatile uint32_t *)addr;
65 compiler_barrier();
66
67 return value;
68}
69
71{
72 compiler_barrier();
73 *(volatile uint32_t *)addr = data;
74 compiler_barrier();
75}
76
77#ifdef __cplusplus
78}
79#endif
80
81#endif /* _ASMLANGUAGE */
82
83#endif /* ZEPHYR_INCLUDE_ARCH_ARC_SYS_IO_COMMON_H_ */
ARCv2 auxiliary registers definitions.
#define ALWAYS_INLINE
Definition common.h:129
__UINT32_TYPE__ uint32_t
Definition stdint.h:90
__UINT8_TYPE__ uint8_t
Definition stdint.h:88
__UINT16_TYPE__ uint16_t
Definition stdint.h:89
static ALWAYS_INLINE void sys_write32(uint32_t data, mem_addr_t addr)
Definition sys-io-common.h:70
static ALWAYS_INLINE uint8_t sys_read8(mem_addr_t addr)
Definition sys-io-common.h:23
static ALWAYS_INLINE void sys_write16(uint16_t data, mem_addr_t addr)
Definition sys-io-common.h:52
static ALWAYS_INLINE uint32_t sys_read32(mem_addr_t addr)
Definition sys-io-common.h:59
static ALWAYS_INLINE uint16_t sys_read16(mem_addr_t addr)
Definition sys-io-common.h:41
static ALWAYS_INLINE void sys_write8(uint8_t data, mem_addr_t addr)
Definition sys-io-common.h:34
uintptr_t mem_addr_t
Definition sys_io.h:21
Macros to abstract toolchain specific capabilities.