1 | /* |
2 | * Virtio serial PCI Bindings |
3 | * |
4 | * Copyright IBM, Corp. 2007 |
5 | * Copyright (c) 2009 CodeSourcery |
6 | * |
7 | * Authors: |
8 | * Anthony Liguori <aliguori@us.ibm.com> |
9 | * Paul Brook <paul@codesourcery.com> |
10 | * |
11 | * This work is licensed under the terms of the GNU GPL, version 2. See |
12 | * the COPYING file in the top-level directory. |
13 | * |
14 | * Contributions after 2012-01-13 are licensed under the terms of the |
15 | * GNU GPL, version 2 or (at your option) any later version. |
16 | */ |
17 | |
18 | #include "qemu/osdep.h" |
19 | |
20 | #include "hw/qdev-properties.h" |
21 | #include "hw/virtio/virtio-serial.h" |
22 | #include "qemu/module.h" |
23 | #include "virtio-pci.h" |
24 | |
25 | typedef struct VirtIOSerialPCI VirtIOSerialPCI; |
26 | |
27 | /* |
28 | * virtio-serial-pci: This extends VirtioPCIProxy. |
29 | */ |
30 | #define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci-base" |
31 | #define VIRTIO_SERIAL_PCI(obj) \ |
32 | OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI) |
33 | |
34 | struct VirtIOSerialPCI { |
35 | VirtIOPCIProxy parent_obj; |
36 | VirtIOSerial vdev; |
37 | }; |
38 | |
39 | static void virtio_serial_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) |
40 | { |
41 | VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev); |
42 | DeviceState *vdev = DEVICE(&dev->vdev); |
43 | DeviceState *proxy = DEVICE(vpci_dev); |
44 | char *bus_name; |
45 | |
46 | if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER && |
47 | vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */ |
48 | vpci_dev->class_code != PCI_CLASS_OTHERS) { /* qemu-kvm */ |
49 | vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER; |
50 | } |
51 | |
52 | /* backwards-compatibility with machines that were created with |
53 | DEV_NVECTORS_UNSPECIFIED */ |
54 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { |
55 | vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1; |
56 | } |
57 | |
58 | /* |
59 | * For command line compatibility, this sets the virtio-serial-device bus |
60 | * name as before. |
61 | */ |
62 | if (proxy->id) { |
63 | bus_name = g_strdup_printf("%s.0" , proxy->id); |
64 | virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); |
65 | g_free(bus_name); |
66 | } |
67 | |
68 | qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
69 | object_property_set_bool(OBJECT(vdev), true, "realized" , errp); |
70 | } |
71 | |
72 | static Property virtio_serial_pci_properties[] = { |
73 | DEFINE_PROP_BIT("ioeventfd" , VirtIOPCIProxy, flags, |
74 | VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
75 | DEFINE_PROP_UINT32("vectors" , VirtIOPCIProxy, nvectors, 2), |
76 | DEFINE_PROP_UINT32("class" , VirtIOPCIProxy, class_code, 0), |
77 | DEFINE_PROP_END_OF_LIST(), |
78 | }; |
79 | |
80 | static void virtio_serial_pci_class_init(ObjectClass *klass, void *data) |
81 | { |
82 | DeviceClass *dc = DEVICE_CLASS(klass); |
83 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
84 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
85 | k->realize = virtio_serial_pci_realize; |
86 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
87 | dc->props = virtio_serial_pci_properties; |
88 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
89 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; |
90 | pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
91 | pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER; |
92 | } |
93 | |
94 | static void virtio_serial_pci_instance_init(Object *obj) |
95 | { |
96 | VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj); |
97 | |
98 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), |
99 | TYPE_VIRTIO_SERIAL); |
100 | } |
101 | |
102 | static const VirtioPCIDeviceTypeInfo virtio_serial_pci_info = { |
103 | .base_name = TYPE_VIRTIO_SERIAL_PCI, |
104 | .generic_name = "virtio-serial-pci" , |
105 | .transitional_name = "virtio-serial-pci-transitional" , |
106 | .non_transitional_name = "virtio-serial-pci-non-transitional" , |
107 | .instance_size = sizeof(VirtIOSerialPCI), |
108 | .instance_init = virtio_serial_pci_instance_init, |
109 | .class_init = virtio_serial_pci_class_init, |
110 | }; |
111 | |
112 | static void virtio_serial_pci_register(void) |
113 | { |
114 | virtio_pci_types_register(&virtio_serial_pci_info); |
115 | } |
116 | |
117 | type_init(virtio_serial_pci_register) |
118 | |