f81804a52b
For the IoTKit MPC support, we need to wire together the interrupt outputs of 17 MPCs; this exceeds the current value of MAX_OR_LINES. Increase MAX_OR_LINES to 32 (which should be enough for anyone). The tricky part is retaining the migration compatibility for existing OR gates; we add a subsection which is only used for larger OR gates, and define it such that we can freely increase MAX_OR_LINES in future (or even move to a dynamically allocated levels[] array without an upper size limit) without breaking compatibility. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180604152941.20374-10-peter.maydell@linaro.org
52 lines
1.7 KiB
C
52 lines
1.7 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.
|
|
*/
|
|
|
|
#ifndef HW_OR_IRQ_H
|
|
#define HW_OR_IRQ_H
|
|
|
|
#include "hw/irq.h"
|
|
#include "hw/sysbus.h"
|
|
#include "qom/object.h"
|
|
|
|
#define TYPE_OR_IRQ "or-irq"
|
|
|
|
/* This can safely be increased if necessary without breaking
|
|
* migration compatibility (as long as it remains greater than 15).
|
|
*/
|
|
#define MAX_OR_LINES 32
|
|
|
|
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;
|
|
bool levels[MAX_OR_LINES];
|
|
uint16_t num_lines;
|
|
};
|
|
|
|
#endif
|