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 device_class_set_props(dc, 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