| /* |
| * 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 "qemu/osdep.h" |
| #include "hw/or-irq.h" |
| |
| static void or_irq_handler(void *opaque, int n, int level) |
| { |
| qemu_or_irq *s = OR_IRQ(opaque); |
| int or_level = 0; |
| int i; |
| |
| s->levels[n] = level; |
| |
| for (i = 0; i < s->num_lines; i++) { |
| or_level |= s->levels[i]; |
| } |
| |
| qemu_set_irq(s->out_irq, or_level); |
| } |
| |
| static void or_irq_reset(DeviceState *dev) |
| { |
| qemu_or_irq *s = OR_IRQ(dev); |
| int i; |
| |
| for (i = 0; i < MAX_OR_LINES; i++) { |
| s->levels[i] = false; |
| } |
| } |
| |
| static void or_irq_realize(DeviceState *dev, Error **errp) |
| { |
| qemu_or_irq *s = OR_IRQ(dev); |
| |
| assert(s->num_lines < MAX_OR_LINES); |
| |
| qdev_init_gpio_in(dev, or_irq_handler, s->num_lines); |
| } |
| |
| static void or_irq_init(Object *obj) |
| { |
| qemu_or_irq *s = OR_IRQ(obj); |
| |
| qdev_init_gpio_out(DEVICE(obj), &s->out_irq, 1); |
| } |
| |
| static const VMStateDescription vmstate_or_irq = { |
| .name = TYPE_OR_IRQ, |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .fields = (VMStateField[]) { |
| VMSTATE_BOOL_ARRAY(levels, qemu_or_irq, MAX_OR_LINES), |
| VMSTATE_END_OF_LIST(), |
| } |
| }; |
| |
| static Property or_irq_properties[] = { |
| DEFINE_PROP_UINT16("num-lines", qemu_or_irq, num_lines, 1), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void or_irq_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| dc->reset = or_irq_reset; |
| dc->props = or_irq_properties; |
| dc->realize = or_irq_realize; |
| dc->vmsd = &vmstate_or_irq; |
| } |
| |
| static const TypeInfo or_irq_type_info = { |
| .name = TYPE_OR_IRQ, |
| .parent = TYPE_DEVICE, |
| .instance_size = sizeof(qemu_or_irq), |
| .instance_init = or_irq_init, |
| .class_init = or_irq_class_init, |
| }; |
| |
| static void or_irq_register_types(void) |
| { |
| type_register_static(&or_irq_type_info); |
| } |
| |
| type_init(or_irq_register_types) |