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/*
* IOAPIC emulation logic - common bits of emulated and KVM kernel model
*
* Copyright (c) 2004-2005 Fabrice Bellard
* Copyright (c) 2009 Xiantao Zhang, Intel
* Copyright (c) 2011 Jan Kiszka, Siemens AG
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "ioapic.h"
#include "ioapic_internal.h"
#include "sysbus.h"
void ioapic_reset_common(DeviceState *dev)
{
IOAPICCommonState *s = DO_UPCAST(IOAPICCommonState, busdev.qdev, dev);
int i;
s->id = 0;
s->ioregsel = 0;
s->irr = 0;
for (i = 0; i < IOAPIC_NUM_PINS; i++) {
s->ioredtbl[i] = 1 << IOAPIC_LVT_MASKED_SHIFT;
}
}
static void ioapic_dispatch_pre_save(void *opaque)
{
IOAPICCommonState *s = opaque;
IOAPICCommonInfo *info =
DO_UPCAST(IOAPICCommonInfo, busdev.qdev, qdev_get_info(&s->busdev.qdev));
if (info->pre_save) {
info->pre_save(s);
}
}
static int ioapic_dispatch_post_load(void *opaque, int version_id)
{
IOAPICCommonState *s = opaque;
IOAPICCommonInfo *info =
DO_UPCAST(IOAPICCommonInfo, busdev.qdev, qdev_get_info(&s->busdev.qdev));
if (info->post_load) {
info->post_load(s);
}
return 0;
}
static int ioapic_init_common(SysBusDevice *dev)
{
IOAPICCommonState *s = FROM_SYSBUS(IOAPICCommonState, dev);
IOAPICCommonInfo *info;
static int ioapic_no;
if (ioapic_no >= MAX_IOAPICS) {
return -1;
}
info = DO_UPCAST(IOAPICCommonInfo, busdev.qdev, qdev_get_info(&s->busdev.qdev));
info->init(s, ioapic_no);
sysbus_init_mmio(&s->busdev, &s->io_memory);
ioapic_no++;
return 0;
}
static const VMStateDescription vmstate_ioapic_common = {
.name = "ioapic",
.version_id = 3,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.pre_save = ioapic_dispatch_pre_save,
.post_load = ioapic_dispatch_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT8(id, IOAPICCommonState),
VMSTATE_UINT8(ioregsel, IOAPICCommonState),
VMSTATE_UNUSED_V(2, 8), /* to account for qemu-kvm's v2 format */
VMSTATE_UINT32_V(irr, IOAPICCommonState, 2),
VMSTATE_UINT64_ARRAY(ioredtbl, IOAPICCommonState, IOAPIC_NUM_PINS),
VMSTATE_END_OF_LIST()
}
};
void ioapic_qdev_register(IOAPICCommonInfo *info)
{
info->busdev.init = ioapic_init_common;
info->busdev.qdev.vmsd = &vmstate_ioapic_common;
info->busdev.qdev.no_user = 1;
sysbus_register_withprop(&info->busdev);
}
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