cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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virtio-serial-pci.c (3882B)

      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#include "qom/object.h"
     25
     26typedef struct VirtIOSerialPCI VirtIOSerialPCI;
     27
     28/*
     29 * virtio-serial-pci: This extends VirtioPCIProxy.
     30 */
     31#define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci-base"
     32DECLARE_INSTANCE_CHECKER(VirtIOSerialPCI, VIRTIO_SERIAL_PCI,
     33                         TYPE_VIRTIO_SERIAL_PCI)
     34
     35struct VirtIOSerialPCI {
     36    VirtIOPCIProxy parent_obj;
     37    VirtIOSerial vdev;
     38};
     39
     40static 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
     72static 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
     80static 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
     94static 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
    102static 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
    112static void virtio_serial_pci_register(void)
    113{
    114    virtio_pci_types_register(&virtio_serial_pci_info);
    115}
    116
    117type_init(virtio_serial_pci_register)