xref: /openbmc/qemu/hw/misc/pvpanic-pci.c (revision 4c58843e)
1 /*
2  * QEMU simulated PCI pvpanic device.
3  *
4  * Copyright (C) 2020 Oracle
5  *
6  * Authors:
7  *     Mihai Carabas <mihai.carabas@oracle.com>
8  *
9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
10  * See the COPYING file in the top-level directory.
11  *
12  */
13 
14 #include "qemu/osdep.h"
15 #include "qemu/module.h"
16 #include "sysemu/runstate.h"
17 
18 #include "hw/nvram/fw_cfg.h"
19 #include "hw/qdev-properties.h"
20 #include "migration/vmstate.h"
21 #include "hw/misc/pvpanic.h"
22 #include "qom/object.h"
23 #include "hw/pci/pci_device.h"
24 #include "standard-headers/misc/pvpanic.h"
25 
26 OBJECT_DECLARE_SIMPLE_TYPE(PVPanicPCIState, PVPANIC_PCI_DEVICE)
27 
28 /*
29  * PVPanicPCIState for PCI device
30  */
31 typedef struct PVPanicPCIState {
32     PCIDevice dev;
33     PVPanicState pvpanic;
34 } PVPanicPCIState;
35 
36 static const VMStateDescription vmstate_pvpanic_pci = {
37     .name = "pvpanic-pci",
38     .version_id = 1,
39     .minimum_version_id = 1,
40     .fields = (const VMStateField[]) {
41         VMSTATE_PCI_DEVICE(dev, PVPanicPCIState),
42         VMSTATE_END_OF_LIST()
43     }
44 };
45 
46 static void pvpanic_pci_realizefn(PCIDevice *dev, Error **errp)
47 {
48     PVPanicPCIState *s = PVPANIC_PCI_DEVICE(dev);
49     PVPanicState *ps = &s->pvpanic;
50 
51     pvpanic_setup_io(ps, DEVICE(s), 2);
52 
53     pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &ps->mr);
54 }
55 
56 static Property pvpanic_pci_properties[] = {
57     DEFINE_PROP_UINT8("events", PVPanicPCIState, pvpanic.events,
58                       PVPANIC_EVENTS),
59     DEFINE_PROP_END_OF_LIST(),
60 };
61 
62 static void pvpanic_pci_class_init(ObjectClass *klass, void *data)
63 {
64     DeviceClass *dc = DEVICE_CLASS(klass);
65     PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
66 
67     device_class_set_props(dc, pvpanic_pci_properties);
68 
69     pc->realize = pvpanic_pci_realizefn;
70     pc->vendor_id = PCI_VENDOR_ID_REDHAT;
71     pc->device_id = PCI_DEVICE_ID_REDHAT_PVPANIC;
72     pc->revision = 1;
73     pc->class_id = PCI_CLASS_SYSTEM_OTHER;
74     dc->vmsd = &vmstate_pvpanic_pci;
75 
76     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
77 }
78 
79 static const TypeInfo pvpanic_pci_info = {
80     .name          = TYPE_PVPANIC_PCI_DEVICE,
81     .parent        = TYPE_PCI_DEVICE,
82     .instance_size = sizeof(PVPanicPCIState),
83     .class_init    = pvpanic_pci_class_init,
84     .interfaces = (InterfaceInfo[]) {
85         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
86         { }
87     }
88 };
89 
90 static void pvpanic_register_types(void)
91 {
92     type_register_static(&pvpanic_pci_info);
93 }
94 
95 type_init(pvpanic_register_types);
96