cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

virtio-serial.c (3761B)

      1/*
      2 * libqos driver framework
      3 *
      4 * Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
      5 *
      6 * This library is free software; you can redistribute it and/or
      7 * modify it under the terms of the GNU Lesser General Public
      8 * License version 2.1 as published by the Free Software Foundation.
      9 *
     10 * This library is distributed in the hope that it will be useful,
     11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13 * Lesser General Public License for more details.
     14 *
     15 * You should have received a copy of the GNU Lesser General Public
     16 * License along with this library; if not, see <http://www.gnu.org/licenses/>
     17 */
     18
     19#include "qemu/osdep.h"
     20#include "libqtest.h"
     21#include "qemu/module.h"
     22#include "qgraph.h"
     23#include "virtio-serial.h"
     24
     25static void *qvirtio_serial_get_driver(QVirtioSerial *v_serial,
     26                                       const char *interface)
     27{
     28    if (!g_strcmp0(interface, "virtio-serial")) {
     29        return v_serial;
     30    }
     31    if (!g_strcmp0(interface, "virtio")) {
     32        return v_serial->vdev;
     33    }
     34
     35    fprintf(stderr, "%s not present in virtio-serial-device\n", interface);
     36    g_assert_not_reached();
     37}
     38
     39static void *qvirtio_serial_device_get_driver(void *object,
     40                                              const char *interface)
     41{
     42    QVirtioSerialDevice *v_serial = object;
     43    return qvirtio_serial_get_driver(&v_serial->serial, interface);
     44}
     45
     46static void *virtio_serial_device_create(void *virtio_dev,
     47                                         QGuestAllocator *t_alloc,
     48                                         void *addr)
     49{
     50    QVirtioSerialDevice *virtio_device = g_new0(QVirtioSerialDevice, 1);
     51    QVirtioSerial *interface = &virtio_device->serial;
     52
     53    interface->vdev = virtio_dev;
     54
     55    virtio_device->obj.get_driver = qvirtio_serial_device_get_driver;
     56
     57    return &virtio_device->obj;
     58}
     59
     60/* virtio-serial-pci */
     61static void *qvirtio_serial_pci_get_driver(void *object, const char *interface)
     62{
     63    QVirtioSerialPCI *v_serial = object;
     64    if (!g_strcmp0(interface, "pci-device")) {
     65        return v_serial->pci_vdev.pdev;
     66    }
     67    return qvirtio_serial_get_driver(&v_serial->serial, interface);
     68}
     69
     70static void *virtio_serial_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
     71                                      void *addr)
     72{
     73    QVirtioSerialPCI *virtio_spci = g_new0(QVirtioSerialPCI, 1);
     74    QVirtioSerial *interface = &virtio_spci->serial;
     75    QOSGraphObject *obj = &virtio_spci->pci_vdev.obj;
     76
     77    virtio_pci_init(&virtio_spci->pci_vdev, pci_bus, addr);
     78    interface->vdev = &virtio_spci->pci_vdev.vdev;
     79
     80    obj->get_driver = qvirtio_serial_pci_get_driver;
     81
     82    return obj;
     83}
     84
     85static void virtio_serial_register_nodes(void)
     86{
     87   QPCIAddress addr = {
     88        .devfn = QPCI_DEVFN(4, 0),
     89    };
     90
     91    QOSGraphEdgeOptions edge_opts = { };
     92
     93    /* virtio-serial-device */
     94    edge_opts.extra_device_opts = "id=vser0";
     95    qos_node_create_driver("virtio-serial-device",
     96                            virtio_serial_device_create);
     97    qos_node_consumes("virtio-serial-device", "virtio-bus", &edge_opts);
     98    qos_node_produces("virtio-serial-device", "virtio");
     99    qos_node_produces("virtio-serial-device", "virtio-serial");
    100
    101    /* virtio-serial-pci */
    102    edge_opts.extra_device_opts = "id=vser0,addr=04.0";
    103    add_qpci_address(&edge_opts, &addr);
    104    qos_node_create_driver("virtio-serial-pci", virtio_serial_pci_create);
    105    qos_node_consumes("virtio-serial-pci", "pci-bus", &edge_opts);
    106    qos_node_produces("virtio-serial-pci", "pci-device");
    107    qos_node_produces("virtio-serial-pci", "virtio");
    108    qos_node_produces("virtio-serial-pci", "virtio-serial");
    109}
    110
    111libqos_init(virtio_serial_register_nodes);