@samitouri / QOSamiQemu
Code Commits Issues Pulls Sessions CI/CD
master
master
c 116 lines 3.79 KB
Raw
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/core/qdev-properties.h"
21 #include "hw/virtio/virtio-serial.h"
22 #include "qemu/module.h"
23 #include "hw/virtio/virtio-pci.h"
24 #include "qom/object.h"
25
26 typedef struct VirtIOSerialPCI VirtIOSerialPCI;
27
28 /*
29 * virtio-serial-pci: This extends VirtioPCIProxy.
30 */
31 #define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci-base"
32 DECLARE_INSTANCE_CHECKER(VirtIOSerialPCI, VIRTIO_SERIAL_PCI,
33 TYPE_VIRTIO_SERIAL_PCI)
34
35 struct VirtIOSerialPCI {
36 VirtIOPCIProxy parent_obj;
37 VirtIOSerial vdev;
38 };
39
40 static void virtio_serial_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
41 {
42 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev);
43 DeviceState *vdev = DEVICE(&dev->vdev);
44 DeviceState *proxy = DEVICE(vpci_dev);
45 char *bus_name;
46
47 if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
48 vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
49 vpci_dev->class_code != PCI_CLASS_OTHERS) { /* qemu-kvm */
50 vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER;
51 }
52
53 /* backwards-compatibility with machines that were created with
54 DEV_NVECTORS_UNSPECIFIED */
55 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
56 vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1;
57 }
58
59 /*
60 * For command line compatibility, this sets the virtio-serial-device bus
61 * name as before.
62 */
63 if (proxy->id) {
64 bus_name = g_strdup_printf("%s.0", proxy->id);
65 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
66 g_free(bus_name);
67 }
68
69 qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
70 }
71
72 static const 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 };
78
79 static void virtio_serial_pci_class_init(ObjectClass *klass, const void *data)
80 {
81 DeviceClass *dc = DEVICE_CLASS(klass);
82 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
83 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
84 k->realize = virtio_serial_pci_realize;
85 set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
86 device_class_set_props(dc, virtio_serial_pci_properties);
87 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
88 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE;
89 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
90 pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
91 }
92
93 static void virtio_serial_pci_instance_init(Object *obj)
94 {
95 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(obj);
96
97 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
98 TYPE_VIRTIO_SERIAL);
99 }
100
101 static const VirtioPCIDeviceTypeInfo virtio_serial_pci_info = {
102 .base_name = TYPE_VIRTIO_SERIAL_PCI,
103 .generic_name = "virtio-serial-pci",
104 .transitional_name = "virtio-serial-pci-transitional",
105 .non_transitional_name = "virtio-serial-pci-non-transitional",
106 .instance_size = sizeof(VirtIOSerialPCI),
107 .instance_init = virtio_serial_pci_instance_init,
108 .class_init = virtio_serial_pci_class_init,
109 };
110
111 static void virtio_serial_pci_register(void)
112 {
113 virtio_pci_types_register(&virtio_serial_pci_info);
114 }
115
116 type_init(virtio_serial_pci_register)