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/*
* QEMU emulation of common X86 IOMMU
*
* Copyright (C) 2016 Peter Xu, Red Hat <peterx@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "hw/sysbus.h"
#include "hw/boards.h"
#include "hw/i386/x86-iommu.h"
#include "qemu/error-report.h"
/* Default X86 IOMMU device */
static X86IOMMUState *x86_iommu_default = NULL;
static void x86_iommu_set_default(X86IOMMUState *x86_iommu)
{
assert(x86_iommu);
if (x86_iommu_default) {
error_report("QEMU does not support multiple vIOMMUs "
"for x86 yet.");
exit(1);
}
x86_iommu_default = x86_iommu;
}
X86IOMMUState *x86_iommu_get_default(void)
{
return x86_iommu_default;
}
static void x86_iommu_realize(DeviceState *dev, Error **errp)
{
X86IOMMUClass *x86_class = X86_IOMMU_GET_CLASS(dev);
if (x86_class->realize) {
x86_class->realize(dev, errp);
}
x86_iommu_set_default(X86_IOMMU_DEVICE(dev));
}
static void x86_iommu_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = x86_iommu_realize;
}
static bool x86_iommu_intremap_prop_get(Object *o, Error **errp)
{
X86IOMMUState *s = X86_IOMMU_DEVICE(o);
return s->intr_supported;
}
static void x86_iommu_intremap_prop_set(Object *o, bool value, Error **errp)
{
X86IOMMUState *s = X86_IOMMU_DEVICE(o);
s->intr_supported = value;
}
static void x86_iommu_instance_init(Object *o)
{
X86IOMMUState *s = X86_IOMMU_DEVICE(o);
/* By default, do not support IR */
s->intr_supported = false;
object_property_add_bool(o, "intremap", x86_iommu_intremap_prop_get,
x86_iommu_intremap_prop_set, NULL);
}
static const TypeInfo x86_iommu_info = {
.name = TYPE_X86_IOMMU_DEVICE,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_init = x86_iommu_instance_init,
.instance_size = sizeof(X86IOMMUState),
.class_init = x86_iommu_class_init,
.class_size = sizeof(X86IOMMUClass),
.abstract = true,
};
static void x86_iommu_register_types(void)
{
type_register_static(&x86_iommu_info);
}
type_init(x86_iommu_register_types)
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