31ae8bb15d
The nubus-virtio-mmio device is a Nubus card that contains a set of 32 virtio-mmio devices and a goldfish PIC similar to the m68k virt machine that can be plugged into the m68k q800 machine. There are currently a number of drivers under development that can be used in conjunction with this device to provide accelerated and/or additional hypervisor services to 68k Classic MacOS. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240111102954.449462-4-mark.cave-ayland@ilande.co.uk> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
/*
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* QEMU Macintosh Nubus Virtio MMIO card
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*
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* Copyright (c) 2024 Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "qemu/osdep.h"
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#include "hw/nubus/nubus-virtio-mmio.h"
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#define NUBUS_VIRTIO_MMIO_PIC_OFFSET 0
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#define NUBUS_VIRTIO_MMIO_DEV_OFFSET 0x200
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static void nubus_virtio_mmio_set_input_irq(void *opaque, int n, int level)
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{
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NubusDevice *nd = NUBUS_DEVICE(opaque);
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nubus_set_irq(nd, level);
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}
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static void nubus_virtio_mmio_realize(DeviceState *dev, Error **errp)
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{
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NubusVirtioMMIODeviceClass *nvmdc = NUBUS_VIRTIO_MMIO_GET_CLASS(dev);
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NubusVirtioMMIO *s = NUBUS_VIRTIO_MMIO(dev);
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NubusDevice *nd = NUBUS_DEVICE(dev);
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SysBusDevice *sbd;
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int i, offset;
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nvmdc->parent_realize(dev, errp);
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if (*errp) {
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return;
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}
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/* Goldfish PIC */
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sbd = SYS_BUS_DEVICE(&s->pic);
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if (!sysbus_realize(sbd, errp)) {
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return;
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}
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memory_region_add_subregion(&nd->slot_mem, NUBUS_VIRTIO_MMIO_PIC_OFFSET,
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sysbus_mmio_get_region(sbd, 0));
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sysbus_connect_irq(sbd, 0,
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qdev_get_gpio_in_named(dev, "pic-input-irq", 0));
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/* virtio-mmio devices */
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offset = NUBUS_VIRTIO_MMIO_DEV_OFFSET;
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for (i = 0; i < NUBUS_VIRTIO_MMIO_NUM_DEVICES; i++) {
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sbd = SYS_BUS_DEVICE(&s->virtio_mmio[i]);
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qdev_prop_set_bit(DEVICE(sbd), "force-legacy", false);
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if (!sysbus_realize_and_unref(sbd, errp)) {
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return;
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}
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memory_region_add_subregion(&nd->slot_mem, offset,
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sysbus_mmio_get_region(sbd, 0));
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offset += 0x200;
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sysbus_connect_irq(sbd, 0, qdev_get_gpio_in(DEVICE(&s->pic), i));
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}
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}
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static void nubus_virtio_mmio_init(Object *obj)
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{
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NubusVirtioMMIO *s = NUBUS_VIRTIO_MMIO(obj);
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int i;
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object_initialize_child(obj, "pic", &s->pic, TYPE_GOLDFISH_PIC);
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for (i = 0; i < NUBUS_VIRTIO_MMIO_NUM_DEVICES; i++) {
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char *name = g_strdup_printf("virtio-mmio[%d]", i);
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object_initialize_child(obj, name, &s->virtio_mmio[i],
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TYPE_VIRTIO_MMIO);
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g_free(name);
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}
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/* Input from goldfish PIC */
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qdev_init_gpio_in_named(DEVICE(obj), nubus_virtio_mmio_set_input_irq,
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"pic-input-irq", 1);
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}
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static void nubus_virtio_mmio_class_init(ObjectClass *oc, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(oc);
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NubusVirtioMMIODeviceClass *nvmdc = NUBUS_VIRTIO_MMIO_CLASS(oc);
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device_class_set_parent_realize(dc, nubus_virtio_mmio_realize,
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&nvmdc->parent_realize);
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}
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static const TypeInfo nubus_virtio_mmio_types[] = {
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{
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.name = TYPE_NUBUS_VIRTIO_MMIO,
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.parent = TYPE_NUBUS_DEVICE,
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.instance_init = nubus_virtio_mmio_init,
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.instance_size = sizeof(NubusVirtioMMIO),
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.class_init = nubus_virtio_mmio_class_init,
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.class_size = sizeof(NubusVirtioMMIODeviceClass),
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},
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};
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DEFINE_TYPES(nubus_virtio_mmio_types)
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