xref: /openbmc/qemu/include/hw/or-irq.h (revision 7f6c3d1a)
1 /*
2  * QEMU IRQ/GPIO common code.
3  *
4  * Copyright (c) 2016 Alistair Francis <alistair@alistair23.me>.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a copy
7  * of this software and associated documentation files (the "Software"), to deal
8  * in the Software without restriction, including without limitation the rights
9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  * copies of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 
25 #ifndef HW_OR_IRQ_H
26 #define HW_OR_IRQ_H
27 
28 #include "hw/sysbus.h"
29 #include "qom/object.h"
30 
31 #define TYPE_OR_IRQ "or-irq"
32 
33 /* This can safely be increased if necessary without breaking
34  * migration compatibility (as long as it remains greater than 15).
35  */
36 #define MAX_OR_LINES      48
37 
38 typedef struct OrIRQState qemu_or_irq;
39 
40 DECLARE_INSTANCE_CHECKER(qemu_or_irq, OR_IRQ,
41                          TYPE_OR_IRQ)
42 
43 struct OrIRQState {
44     DeviceState parent_obj;
45 
46     qemu_irq out_irq;
47     bool levels[MAX_OR_LINES];
48     uint16_t num_lines;
49 };
50 
51 #endif
52