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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* QEMU IRQ/GPIO common code.
*
* Copyright (c) 2007 CodeSourcery.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/main-loop.h"
#include "hw/irq.h"
#include "qom/object.h"
OBJECT_DECLARE_SIMPLE_TYPE(IRQState, IRQ)
struct IRQState {
Object parent_obj;
qemu_irq_handler handler;
void *opaque;
int n;
};
void qemu_set_irq(qemu_irq irq, int level)
{
if (!irq)
return;
irq->handler(irq->opaque, irq->n, level);
}
qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler,
void *opaque, int n)
{
qemu_irq *s;
int i;
if (!old) {
n_old = 0;
}
s = old ? g_renew(qemu_irq, old, n + n_old) : g_new(qemu_irq, n);
for (i = n_old; i < n + n_old; i++) {
s[i] = qemu_allocate_irq(handler, opaque, i);
}
return s;
}
qemu_irq *qemu_allocate_irqs(qemu_irq_handler handler, void *opaque, int n)
{
return qemu_extend_irqs(NULL, 0, handler, opaque, n);
}
qemu_irq qemu_allocate_irq(qemu_irq_handler handler, void *opaque, int n)
{
IRQState *irq;
irq = IRQ(object_new(TYPE_IRQ));
irq->handler = handler;
irq->opaque = opaque;
irq->n = n;
return irq;
}
void qemu_free_irqs(qemu_irq *s, int n)
{
int i;
for (i = 0; i < n; i++) {
qemu_free_irq(s[i]);
}
g_free(s);
}
void qemu_free_irq(qemu_irq irq)
{
object_unref(OBJECT(irq));
}
static void qemu_notirq(void *opaque, int line, int level)
{
IRQState *irq = opaque;
irq->handler(irq->opaque, irq->n, !level);
}
qemu_irq qemu_irq_invert(qemu_irq irq)
{
/* The default state for IRQs is low, so raise the output now. */
qemu_irq_raise(irq);
return qemu_allocate_irq(qemu_notirq, irq, 0);
}
void qemu_irq_intercept_in(qemu_irq *gpio_in, qemu_irq_handler handler, int n)
{
int i;
qemu_irq *old_irqs = qemu_allocate_irqs(NULL, NULL, n);
for (i = 0; i < n; i++) {
*old_irqs[i] = *gpio_in[i];
gpio_in[i]->handler = handler;
gpio_in[i]->opaque = &old_irqs[i];
}
}
static const TypeInfo irq_type_info = {
.name = TYPE_IRQ,
.parent = TYPE_OBJECT,
.instance_size = sizeof(IRQState),
};
static void irq_register_types(void)
{
type_register_static(&irq_type_info);
}
type_init(irq_register_types)
|
