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[qemu.git] / hw / virtio-pci.h
1 /*
2 * Virtio 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
15 #ifndef QEMU_VIRTIO_PCI_H
16 #define QEMU_VIRTIO_PCI_H
17
18 #include "virtio-net.h"
19 #include "virtio-serial.h"
20
21 /* Performance improves when virtqueue kick processing is decoupled from the
22 * vcpu thread using ioeventfd for some devices. */
23 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1
24 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
25
26 typedef struct {
27 PCIDevice pci_dev;
28 VirtIODevice *vdev;
29 MemoryRegion bar;
30 MemoryRegion msix_bar;
31 uint32_t flags;
32 uint32_t class_code;
33 uint32_t nvectors;
34 BlockConf block;
35 char *block_serial;
36 NICConf nic;
37 uint32_t host_features;
38 #ifdef CONFIG_LINUX
39 V9fsConf fsconf;
40 #endif
41 virtio_serial_conf serial;
42 virtio_net_conf net;
43 bool ioeventfd_disabled;
44 bool ioeventfd_started;
45 } VirtIOPCIProxy;
46
47 void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
48
49 /* Virtio ABI version, if we increment this, we break the guest driver. */
50 #define VIRTIO_PCI_ABI_VERSION 0
51
52 #endif