4 * Copyright IBM, Corp. 2007
5 * Copyright (c) 2009 CodeSourcery
11 * This work is licensed under the terms of the GNU GPL, version 2. See
12 * the COPYING file in the top-level directory.
15 #ifndef QEMU_VIRTIO_PCI_H
16 #define QEMU_VIRTIO_PCI_H
18 #include "hw/pci/msi.h"
19 #include "virtio-blk.h"
20 #include "virtio-net.h"
21 #include "virtio-rng.h"
22 #include "virtio-serial.h"
23 #include "virtio-scsi.h"
25 /* Performance improves when virtqueue kick processing is decoupled from the
26 * vcpu thread using ioeventfd for some devices. */
27 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1
28 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
45 uint32_t host_features;
49 virtio_serial_conf serial;
53 bool ioeventfd_disabled;
54 bool ioeventfd_started;
55 VirtIOIRQFD *vector_irqfd;
56 int nvqs_with_notifiers;
59 void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
60 void virtio_pci_reset(DeviceState *d);
62 /* Virtio ABI version, if we increment this, we break the guest driver. */
63 #define VIRTIO_PCI_ABI_VERSION 0