diff options
Diffstat (limited to 'qemu/hw/intc/ioapic_common.c')
| -rw-r--r-- | qemu/hw/intc/ioapic_common.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/qemu/hw/intc/ioapic_common.c b/qemu/hw/intc/ioapic_common.c new file mode 100644 index 000000000..8b7d11806 --- /dev/null +++ b/qemu/hw/intc/ioapic_common.c @@ -0,0 +1,123 @@ +/* + * 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 "hw/i386/ioapic.h" +#include "hw/i386/ioapic_internal.h" +#include "hw/sysbus.h" + +/* ioapic_no count start from 0 to MAX_IOAPICS, + * remove as static variable from ioapic_common_init. + * now as a global variable, let child to increase the counter + * then we can drop the 'instance_no' argument + * and convert to our QOM's realize function + */ +int ioapic_no; + +void ioapic_reset_common(DeviceState *dev) +{ + IOAPICCommonState *s = IOAPIC_COMMON(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 = IOAPIC_COMMON(opaque); + IOAPICCommonClass *info = IOAPIC_COMMON_GET_CLASS(s); + + if (info->pre_save) { + info->pre_save(s); + } +} + +static int ioapic_dispatch_post_load(void *opaque, int version_id) +{ + IOAPICCommonState *s = IOAPIC_COMMON(opaque); + IOAPICCommonClass *info = IOAPIC_COMMON_GET_CLASS(s); + + if (info->post_load) { + info->post_load(s); + } + return 0; +} + +static void ioapic_common_realize(DeviceState *dev, Error **errp) +{ + IOAPICCommonState *s = IOAPIC_COMMON(dev); + IOAPICCommonClass *info; + + if (ioapic_no >= MAX_IOAPICS) { + error_setg(errp, "Only %d ioapics allowed", MAX_IOAPICS); + return; + } + + info = IOAPIC_COMMON_GET_CLASS(s); + info->realize(dev, errp); + + sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->io_memory); + ioapic_no++; +} + +static const VMStateDescription vmstate_ioapic_common = { + .name = "ioapic", + .version_id = 3, + .minimum_version_id = 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() + } +}; + +static void ioapic_common_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = ioapic_common_realize; + dc->vmsd = &vmstate_ioapic_common; +} + +static const TypeInfo ioapic_common_type = { + .name = TYPE_IOAPIC_COMMON, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(IOAPICCommonState), + .class_size = sizeof(IOAPICCommonClass), + .class_init = ioapic_common_class_init, + .abstract = true, +}; + +static void ioapic_common_register_types(void) +{ + type_register_static(&ioapic_common_type); +} + +type_init(ioapic_common_register_types) |