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/virtio/virtio-serial.h" 21 #include "qemu/module.h" 22 #include "virtio-pci.h" 23 24 typedef struct VirtIOSerialPCI VirtIOSerialPCI; 25 26 /* 27 * virtio-serial-pci: This extends VirtioPCIProxy. 28 */ 29 #define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci-base" 30 #define VIRTIO_SERIAL_PCI(obj) \ 31 OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI) 32 33 struct VirtIOSerialPCI { 34 VirtIOPCIProxy parent_obj; 35 VirtIOSerial vdev; 36 }; 37 38 static void virtio_serial_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 39 { 40 VirtIOSerialPCI *dev = VIRTIO_SERIAL_PCI(vpci_dev); 41 DeviceState *vdev = DEVICE(&dev->vdev); 42 DeviceState *proxy = DEVICE(vpci_dev); 43 char *bus_name; 44 45 if (vpci_dev->class_code != PCI_CLASS_COMMUNICATION_OTHER && 46 vpci_dev->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */ 47 vpci_dev->class_code != PCI_CLASS_OTHERS) { /* qemu-kvm */ 48 vpci_dev->class_code = PCI_CLASS_COMMUNICATION_OTHER; 49 } 50 51 /* backwards-compatibility with machines that were created with 52 DEV_NVECTORS_UNSPECIFIED */ 53 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { 54 vpci_dev->nvectors = dev->vdev.serial.max_virtserial_ports + 1; 55 } 56 57 /* 58 * For command line compatibility, this sets the virtio-serial-device bus 59 * name as before. 60 */ 61 if (proxy->id) { 62 bus_name = g_strdup_printf("%s.0", proxy->id); 63 virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); 64 g_free(bus_name); 65 } 66 67 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); 68 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 69 } 70 71 static Property virtio_serial_pci_properties[] = { 72 DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, 73 VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), 74 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), 75 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0), 76 DEFINE_PROP_END_OF_LIST(), 77 }; 78 79 static void virtio_serial_pci_class_init(ObjectClass *klass, 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 dc->props = 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) 117