1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _LOS_PERCPU_PRI_H
33 #define _LOS_PERCPU_PRI_H
34
35 #include "los_base.h"
36 #include "los_hw_cpu.h"
37
38 #ifdef __cplusplus
39 #if __cplusplus
40 extern "C" {
41 #endif /* __cplusplus */
42 #endif /* __cplusplus */
43
44 #ifdef LOSCFG_KERNEL_SMP
45 typedef enum {
46 CPU_RUNNING = 0, /* cpu is running */
47 CPU_HALT, /* cpu in the halt */
48 CPU_EXC /* cpu in the exc */
49 } ExcFlag;
50
51 typedef struct {
52 UINT32 excFlag; /* cpu halt or exc flag */
53 #ifdef LOSCFG_KERNEL_SMP_CALL
54 LOS_DL_LIST funcLink; /* mp function call link */
55 #endif
56 } Percpu;
57
58 /* the kernel per-cpu structure */
59 extern Percpu g_percpu[LOSCFG_KERNEL_CORE_NUM];
60
OsPercpuGet(VOID)61 STATIC INLINE Percpu *OsPercpuGet(VOID)
62 {
63 return &g_percpu[ArchCurrCpuid()];
64 }
65
OsPercpuGetByID(UINT32 cpuid)66 STATIC INLINE Percpu *OsPercpuGetByID(UINT32 cpuid)
67 {
68 return &g_percpu[cpuid];
69 }
70
OsCpuStatusIsHalt(UINT16 cpuid)71 STATIC INLINE UINT32 OsCpuStatusIsHalt(UINT16 cpuid)
72 {
73 return (OsPercpuGetByID(cpuid)->excFlag == CPU_HALT);
74 }
75
OsCpuStatusSet(ExcFlag flag)76 STATIC INLINE VOID OsCpuStatusSet(ExcFlag flag)
77 {
78 OsPercpuGet()->excFlag = flag;
79 }
80
81 VOID OsAllCpuStatusOutput(VOID);
82 #endif
83
84 #ifdef __cplusplus
85 #if __cplusplus
86 }
87 #endif /* __cplusplus */
88 #endif /* __cplusplus */
89
90 #endif /* _LOS_PERCPU_PRI_H */
91