554f5e1604
This patch enables device IOTLB support for intel iommu. The major work is to implement QI device IOTLB descriptor processing and notify the device through iommu notifier. Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com>
152 lines
4.2 KiB
C
152 lines
4.2 KiB
C
/*
|
|
* 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"
|
|
#include "trace.h"
|
|
|
|
void x86_iommu_iec_register_notifier(X86IOMMUState *iommu,
|
|
iec_notify_fn fn, void *data)
|
|
{
|
|
IEC_Notifier *notifier = g_new0(IEC_Notifier, 1);
|
|
|
|
notifier->iec_notify = fn;
|
|
notifier->private = data;
|
|
|
|
QLIST_INSERT_HEAD(&iommu->iec_notifiers, notifier, list);
|
|
}
|
|
|
|
void x86_iommu_iec_notify_all(X86IOMMUState *iommu, bool global,
|
|
uint32_t index, uint32_t mask)
|
|
{
|
|
IEC_Notifier *notifier;
|
|
|
|
trace_x86_iommu_iec_notify(global, index, mask);
|
|
|
|
QLIST_FOREACH(notifier, &iommu->iec_notifiers, list) {
|
|
if (notifier->iec_notify) {
|
|
notifier->iec_notify(notifier->private, global,
|
|
index, mask);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
IommuType x86_iommu_get_type(void)
|
|
{
|
|
return x86_iommu_default->type;
|
|
}
|
|
|
|
static void x86_iommu_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(dev);
|
|
X86IOMMUClass *x86_class = X86_IOMMU_GET_CLASS(dev);
|
|
QLIST_INIT(&x86_iommu->iec_notifiers);
|
|
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 bool x86_iommu_device_iotlb_prop_get(Object *o, Error **errp)
|
|
{
|
|
X86IOMMUState *s = X86_IOMMU_DEVICE(o);
|
|
return s->dt_supported;
|
|
}
|
|
|
|
static void x86_iommu_device_iotlb_prop_set(Object *o, bool value, Error **errp)
|
|
{
|
|
X86IOMMUState *s = X86_IOMMU_DEVICE(o);
|
|
s->dt_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);
|
|
s->dt_supported = false;
|
|
object_property_add_bool(o, "device-iotlb",
|
|
x86_iommu_device_iotlb_prop_get,
|
|
x86_iommu_device_iotlb_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)
|