meson: convert hw/vfio
[qemu.git] / hw / core / split-irq.c
1 /*
2 * IRQ splitter device.
3 *
4 * Copyright (c) 2018 Linaro Limited.
5 * Written by Peter Maydell
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
26 #include "qemu/osdep.h"
27 #include "hw/core/split-irq.h"
28 #include "hw/irq.h"
29 #include "hw/qdev-properties.h"
30 #include "qapi/error.h"
31 #include "qemu/module.h"
32
33 static void split_irq_handler(void *opaque, int n, int level)
34 {
35 SplitIRQ *s = SPLIT_IRQ(opaque);
36 int i;
37
38 for (i = 0; i < s->num_lines; i++) {
39 qemu_set_irq(s->out_irq[i], level);
40 }
41 }
42
43 static void split_irq_init(Object *obj)
44 {
45 qdev_init_gpio_in(DEVICE(obj), split_irq_handler, 1);
46 }
47
48 static void split_irq_realize(DeviceState *dev, Error **errp)
49 {
50 SplitIRQ *s = SPLIT_IRQ(dev);
51
52 if (s->num_lines < 1 || s->num_lines >= MAX_SPLIT_LINES) {
53 error_setg(errp,
54 "IRQ splitter number of lines %d is not between 1 and %d",
55 s->num_lines, MAX_SPLIT_LINES);
56 return;
57 }
58
59 qdev_init_gpio_out(dev, s->out_irq, s->num_lines);
60 }
61
62 static Property split_irq_properties[] = {
63 DEFINE_PROP_UINT16("num-lines", SplitIRQ, num_lines, 1),
64 DEFINE_PROP_END_OF_LIST(),
65 };
66
67 static void split_irq_class_init(ObjectClass *klass, void *data)
68 {
69 DeviceClass *dc = DEVICE_CLASS(klass);
70
71 /* No state to reset or migrate */
72 device_class_set_props(dc, split_irq_properties);
73 dc->realize = split_irq_realize;
74
75 /* Reason: Needs to be wired up to work */
76 dc->user_creatable = false;
77 }
78
79 static const TypeInfo split_irq_type_info = {
80 .name = TYPE_SPLIT_IRQ,
81 .parent = TYPE_DEVICE,
82 .instance_size = sizeof(SplitIRQ),
83 .instance_init = split_irq_init,
84 .class_init = split_irq_class_init,
85 };
86
87 static void split_irq_register_types(void)
88 {
89 type_register_static(&split_irq_type_info);
90 }
91
92 type_init(split_irq_register_types)