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tfm_wait.h
1 /*
2  * Copyright (c) 2018-2019, Arm Limited. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  *
6  */
7 #ifndef __TFM_WAIT_H__
8 #define __TFM_WAIT_H__
9 
10 #include "cmsis_compiler.h"
11 
12 /* The magic number has two purposes: corruption detection and debug */
13 #define TFM_EVENT_MAGIC 0x65766e74
14 
15 struct tfm_event_t {
16  uint32_t magic; /* 'evnt' */
17  struct tfm_thrd_ctx *owner; /* Event blocked thread */
18 };
19 
20 /*
21  * Initialize an event object.
22  *
23  * Parameters:
24  * pevnt - The pointer of event object allocated by the caller
25  */
26 void __STATIC_INLINE tfm_event_init(struct tfm_event_t *pevnt)
27 {
28  pevnt->magic = TFM_EVENT_MAGIC;
29  pevnt->owner = NULL;
30 }
31 
32 /*
33  * Wait on an event object.
34  *
35  * Parameters:
36  * pevnt - The pointer of event object allocated by the caller
37  *
38  * Notes:
39  * Block caller thread by calling this function.
40  */
41 void tfm_event_wait(struct tfm_event_t *pevnt);
42 
43 /*
44  * Wake up an event object.
45  *
46  * Parameters :
47  * pevnt - The pointer of event object allocated by the caller
48  * retval - Value to be returned to owner
49  *
50  * Notes:
51  * Wake up the blocked thread and set parameter 'retval' as the return value.
52  */
53 void tfm_event_wake(struct tfm_event_t *pevnt, uint32_t retval);
54 
55 #endif
tfm_thrd_ctx
Definition: tfm_thread.h:39
tfm_event_t
Definition: tfm_wait.h:15
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