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/linux/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 = (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(&s->pvpanic, 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_PANICKED | PVPANIC_CRASH_LOADED), 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