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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 "hw/pci/msi.h"

#include "hw/virtio/virtio-blk.h"

#include "hw/virtio/virtio-net.h"

#include "hw/virtio/virtio-rng.h"

#include "hw/virtio/virtio-serial.h"

#include "hw/virtio/virtio-scsi.h"

#include "hw/virtio/virtio-balloon.h"

#include "hw/virtio/virtio-bus.h"

#include "hw/virtio/virtio-9p.h"

typedef struct VirtIOPCIProxy VirtIOPCIProxy;

typedef struct VirtIOBlkPCI VirtIOBlkPCI;

typedef struct VirtIOSCSIPCI VirtIOSCSIPCI;

typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;

/* virtio-pci-bus */

typedef struct VirtioBusState VirtioPCIBusState;

typedef struct VirtioBusClass VirtioPCIBusClass;

#define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"

#define VIRTIO_PCI_BUS(obj) \

        OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)

#define VIRTIO_PCI_BUS_GET_CLASS(obj) \

        OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)

#define VIRTIO_PCI_BUS_CLASS(klass) \

        OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)

/* 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 {

    MSIMessage msg;

    int virq;

    unsigned int users;

} VirtIOIRQFD;

/*

 * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.

 */

#define TYPE_VIRTIO_PCI "virtio-pci"

#define VIRTIO_PCI_GET_CLASS(obj) \

        OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI)

#define VIRTIO_PCI_CLASS(klass) \

        OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI)

#define VIRTIO_PCI(obj) \

        OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI)

typedef struct VirtioPCIClass {

    PCIDeviceClass parent_class;

    int (*init)(VirtIOPCIProxy *vpci_dev);

} VirtioPCIClass;

struct VirtIOPCIProxy {

    PCIDevice pci_dev;

    VirtIODevice *vdev;

    MemoryRegion bar;

    uint32_t flags;

    uint32_t class_code;

    uint32_t nvectors;

    NICConf nic;

    uint32_t host_features;

#ifdef CONFIG_VIRTFS

    V9fsConf fsconf;

#endif

    virtio_serial_conf serial;

    virtio_net_conf net;

    VirtIORNGConf rng;

    bool ioeventfd_disabled;

    bool ioeventfd_started;

    VirtIOIRQFD *vector_irqfd;

    int nvqs_with_notifiers;

    VirtioBusState bus;

};

/*

 * virtio-scsi-pci: This extends VirtioPCIProxy.

 */

#define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci"

#define VIRTIO_SCSI_PCI(obj) \

        OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI)

struct VirtIOSCSIPCI {

    VirtIOPCIProxy parent_obj;

    VirtIOSCSI vdev;

};

/*

 * virtio-blk-pci: This extends VirtioPCIProxy.

 */

#define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"

#define VIRTIO_BLK_PCI(obj) \

        OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)

struct VirtIOBlkPCI {

    VirtIOPCIProxy parent_obj;

    VirtIOBlock vdev;

    VirtIOBlkConf blk;

};

/*

 * virtio-balloon-pci: This extends VirtioPCIProxy.

 */

#define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci"

#define VIRTIO_BALLOON_PCI(obj) \

        OBJECT_CHECK(VirtIOBalloonPCI, (obj), TYPE_VIRTIO_BALLOON_PCI)

struct VirtIOBalloonPCI {

    VirtIOPCIProxy parent_obj;

    VirtIOBalloon vdev;

};

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

void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);

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

#define VIRTIO_PCI_ABI_VERSION          0

#endif