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/*
* QEMU Macintosh Nubus Virtio MMIO card
*
* Copyright (c) 2024 Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/nubus/nubus-virtio-mmio.h"
#define NUBUS_VIRTIO_MMIO_PIC_OFFSET 0
#define NUBUS_VIRTIO_MMIO_DEV_OFFSET 0x200
static void nubus_virtio_mmio_set_input_irq(void *opaque, int n, int level)
{
NubusDevice *nd = NUBUS_DEVICE(opaque);
nubus_set_irq(nd, level);
}
static void nubus_virtio_mmio_realize(DeviceState *dev, Error **errp)
{
ERRP_GUARD();
NubusVirtioMMIODeviceClass *nvmdc = NUBUS_VIRTIO_MMIO_GET_CLASS(dev);
NubusVirtioMMIO *s = NUBUS_VIRTIO_MMIO(dev);
NubusDevice *nd = NUBUS_DEVICE(dev);
SysBusDevice *sbd;
int i, offset;
nvmdc->parent_realize(dev, errp);
if (*errp) {
return;
}
/* Goldfish PIC */
sbd = SYS_BUS_DEVICE(&s->pic);
if (!sysbus_realize(sbd, errp)) {
return;
}
memory_region_add_subregion(&nd->slot_mem, NUBUS_VIRTIO_MMIO_PIC_OFFSET,
sysbus_mmio_get_region(sbd, 0));
sysbus_connect_irq(sbd, 0,
qdev_get_gpio_in_named(dev, "pic-input-irq", 0));
/* virtio-mmio devices */
offset = NUBUS_VIRTIO_MMIO_DEV_OFFSET;
for (i = 0; i < NUBUS_VIRTIO_MMIO_NUM_DEVICES; i++) {
sbd = SYS_BUS_DEVICE(&s->virtio_mmio[i]);
qdev_prop_set_bit(DEVICE(sbd), "force-legacy", false);
if (!sysbus_realize_and_unref(sbd, errp)) {
return;
}
memory_region_add_subregion(&nd->slot_mem, offset,
sysbus_mmio_get_region(sbd, 0));
offset += 0x200;
sysbus_connect_irq(sbd, 0, qdev_get_gpio_in(DEVICE(&s->pic), i));
}
}
static void nubus_virtio_mmio_init(Object *obj)
{
NubusVirtioMMIO *s = NUBUS_VIRTIO_MMIO(obj);
int i;
object_initialize_child(obj, "pic", &s->pic, TYPE_GOLDFISH_PIC);
for (i = 0; i < NUBUS_VIRTIO_MMIO_NUM_DEVICES; i++) {
char *name = g_strdup_printf("virtio-mmio[%d]", i);
object_initialize_child(obj, name, &s->virtio_mmio[i],
TYPE_VIRTIO_MMIO);
g_free(name);
}
/* Input from goldfish PIC */
qdev_init_gpio_in_named(DEVICE(obj), nubus_virtio_mmio_set_input_irq,
"pic-input-irq", 1);
}
static void nubus_virtio_mmio_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
NubusVirtioMMIODeviceClass *nvmdc = NUBUS_VIRTIO_MMIO_CLASS(oc);
device_class_set_parent_realize(dc, nubus_virtio_mmio_realize,
&nvmdc->parent_realize);
}
static const TypeInfo nubus_virtio_mmio_types[] = {
{
.name = TYPE_NUBUS_VIRTIO_MMIO,
.parent = TYPE_NUBUS_DEVICE,
.instance_init = nubus_virtio_mmio_init,
.instance_size = sizeof(NubusVirtioMMIO),
.class_init = nubus_virtio_mmio_class_init,
.class_size = sizeof(NubusVirtioMMIODeviceClass),
},
};
DEFINE_TYPES(nubus_virtio_mmio_types)
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