qdev: don't access name through info
[qemu.git] / hw / ioapic_common.c
1 /*
2 * IOAPIC emulation logic - common bits of emulated and KVM kernel model
3 *
4 * Copyright (c) 2004-2005 Fabrice Bellard
5 * Copyright (c) 2009 Xiantao Zhang, Intel
6 * Copyright (c) 2011 Jan Kiszka, Siemens AG
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "ioapic.h"
23 #include "ioapic_internal.h"
24 #include "sysbus.h"
25
26 void ioapic_reset_common(DeviceState *dev)
27 {
28 IOAPICCommonState *s = DO_UPCAST(IOAPICCommonState, busdev.qdev, dev);
29 int i;
30
31 s->id = 0;
32 s->ioregsel = 0;
33 s->irr = 0;
34 for (i = 0; i < IOAPIC_NUM_PINS; i++) {
35 s->ioredtbl[i] = 1 << IOAPIC_LVT_MASKED_SHIFT;
36 }
37 }
38
39 static void ioapic_dispatch_pre_save(void *opaque)
40 {
41 IOAPICCommonState *s = opaque;
42 IOAPICCommonInfo *info =
43 DO_UPCAST(IOAPICCommonInfo, busdev.qdev, qdev_get_info(&s->busdev.qdev));
44
45 if (info->pre_save) {
46 info->pre_save(s);
47 }
48 }
49
50 static int ioapic_dispatch_post_load(void *opaque, int version_id)
51 {
52 IOAPICCommonState *s = opaque;
53 IOAPICCommonInfo *info =
54 DO_UPCAST(IOAPICCommonInfo, busdev.qdev, qdev_get_info(&s->busdev.qdev));
55
56 if (info->post_load) {
57 info->post_load(s);
58 }
59 return 0;
60 }
61
62 static int ioapic_init_common(SysBusDevice *dev)
63 {
64 IOAPICCommonState *s = FROM_SYSBUS(IOAPICCommonState, dev);
65 IOAPICCommonInfo *info;
66 static int ioapic_no;
67
68 if (ioapic_no >= MAX_IOAPICS) {
69 return -1;
70 }
71
72 info = DO_UPCAST(IOAPICCommonInfo, busdev.qdev, qdev_get_info(&s->busdev.qdev));
73 info->init(s, ioapic_no);
74
75 sysbus_init_mmio(&s->busdev, &s->io_memory);
76 ioapic_no++;
77
78 return 0;
79 }
80
81 static const VMStateDescription vmstate_ioapic_common = {
82 .name = "ioapic",
83 .version_id = 3,
84 .minimum_version_id = 1,
85 .minimum_version_id_old = 1,
86 .pre_save = ioapic_dispatch_pre_save,
87 .post_load = ioapic_dispatch_post_load,
88 .fields = (VMStateField[]) {
89 VMSTATE_UINT8(id, IOAPICCommonState),
90 VMSTATE_UINT8(ioregsel, IOAPICCommonState),
91 VMSTATE_UNUSED_V(2, 8), /* to account for qemu-kvm's v2 format */
92 VMSTATE_UINT32_V(irr, IOAPICCommonState, 2),
93 VMSTATE_UINT64_ARRAY(ioredtbl, IOAPICCommonState, IOAPIC_NUM_PINS),
94 VMSTATE_END_OF_LIST()
95 }
96 };
97
98 void ioapic_qdev_register(IOAPICCommonInfo *info)
99 {
100 info->busdev.init = ioapic_init_common;
101 info->busdev.qdev.vmsd = &vmstate_ioapic_common;
102 info->busdev.qdev.no_user = 1;
103 sysbus_register_withprop(&info->busdev);
104 }