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/*

 * Virtio PCI Bindings

 *

 * Copyright IBM, Corp. 2007

 * Copyright (c) 2009 CodeSourcery

 *

 * Authors:

 *  Anthony Liguori   <aliguori@us.ibm.com>

 *  Paul Brook        <paul@codesourcery.com>

 *

 * This work is licensed under the terms of the GNU GPL, version 2.  See

 * the COPYING file in the top-level directory.

 */

#ifndef QEMU_VIRTIO_PCI_H

#define QEMU_VIRTIO_PCI_H

#include "virtio-blk.h"

#include "virtio-net.h"

#include "virtio-rng.h"

#include "virtio-serial.h"

#include "virtio-scsi.h"

/* Performance improves when virtqueue kick processing is decoupled from the

 * vcpu thread using ioeventfd for some devices. */

#define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1

#define VIRTIO_PCI_FLAG_USE_IOEVENTFD   (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)

typedef struct {

    int virq;

    unsigned int users;

} VirtIOIRQFD;

typedef struct {

    PCIDevice pci_dev;

    VirtIODevice *vdev;

    MemoryRegion bar;

    uint32_t flags;

    uint32_t class_code;

    uint32_t nvectors;

    VirtIOBlkConf blk;

    NICConf nic;

    uint32_t host_features;

#ifdef CONFIG_LINUX

    V9fsConf fsconf;

#endif

    virtio_serial_conf serial;

    virtio_net_conf net;

    VirtIOSCSIConf scsi;

    VirtIORNGConf rng;

    bool ioeventfd_disabled;

    bool ioeventfd_started;

    VirtIOIRQFD *vector_irqfd;

} VirtIOPCIProxy;

void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);

void virtio_pci_reset(DeviceState *d);

/* Virtio ABI version, if we increment this, we break the guest driver. */

#define VIRTIO_PCI_ABI_VERSION          0

#endif