qemu/include/hw/or-irq.h
Alistair Francis 1b25567765 irq: Add a new irq device that allows the ORing of lines
Signed-off-by: Alistair Francis <alistair@alistair23.me>
Message-id: 52e5d361e3b5a0ea8554aca73ee65ae2b586112e.1474742262.git.alistair@alistair23.me
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-10-04 13:28:07 +01:00

45 lines
1.5 KiB
C

/*
* QEMU IRQ/GPIO common code.
*
* Copyright (c) 2016 Alistair Francis <alistair@alistair23.me>.
*
* 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 "hw/irq.h"
#include "hw/sysbus.h"
#include "qom/object.h"
#define TYPE_OR_IRQ "or-irq"
#define MAX_OR_LINES 16
typedef struct OrIRQState qemu_or_irq;
#define OR_IRQ(obj) OBJECT_CHECK(qemu_or_irq, (obj), TYPE_OR_IRQ)
struct OrIRQState {
DeviceState parent_obj;
qemu_irq out_irq;
qemu_irq *in_irqs;
bool levels[MAX_OR_LINES];
uint16_t num_lines;
};