1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-10-19 JasonHu first version
*/
#include <rthw.h>
#include <rtthread.h>
#include "rt_interrupt.h"
extern rt_uint32_t rt_interrupt_nest;
extern rt_uint32_t rt_interrupt_from_thread, rt_interrupt_to_thread;
extern rt_uint32_t rt_thread_switch_interrupt_flag;
struct rt_irq_desc isr_table[INTERRUPTS_MAX];
static void rt_hw_interrupt_handler(int vector, void *param)
{
rt_kprintf("Unhandled interrupt %d occured!!!\n", vector);
}
/**
* This function will initialize hardware interrupt
*/
void rt_hw_interrupt_init(void)
{
rt_int32_t idx;
rt_memset(isr_table, 0x00, sizeof(isr_table));
for (idx = 0; idx < INTERRUPTS_MAX; idx++)
{
isr_table[idx].handler = rt_hw_interrupt_handler;
}
/* init interrupt nest, and context in thread sp */
#ifndef RT_USING_SMP
rt_interrupt_nest = 0;
#endif /* RT_USING_SMP */
rt_interrupt_from_thread = 0;
rt_interrupt_to_thread = 0;
rt_thread_switch_interrupt_flag = 0;
}
/**
* This function will mask a interrupt.
* @param vector the interrupt number
*/
void rt_hw_interrupt_mask(int vector)
{
}
/**
* This function will un-mask a interrupt.
* @param vector the interrupt number
*/
void rt_hw_interrupt_umask(int vector)
{
}
/**
* This function will install a interrupt service routine to a interrupt.
* @param vector the interrupt number
* @param handler the interrupt service routine to be installed
* @param param the interrupt service function parameter
* @param name the interrupt name
* @return old handler
*/
rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
void *param, const char *name)
{
rt_isr_handler_t old_handler = RT_NULL;
if ((vector < 0) || (vector > IRQ_MAX_NR))
{
return old_handler;
}
old_handler = isr_table[IRQ_OFFSET + vector].handler;
#ifdef RT_USING_INTERRUPT_INFO
rt_strncpy(isr_table[IRQ_OFFSET + vector].name, name, RT_NAME_MAX);
#endif /* RT_USING_INTERRUPT_INFO */
isr_table[IRQ_OFFSET + vector].handler = handler;
isr_table[IRQ_OFFSET + vector].param = param;
return old_handler;
}
|
