mirror of https://gitee.com/openkylin/qemu.git
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/*
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* Virtio PCI Bindings
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*
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* Copyright IBM, Corp. 2007
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* Copyright (c) 2009 CodeSourcery
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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* Paul Brook <paul@codesourcery.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*/
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#ifndef QEMU_VIRTIO_PCI_H
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#define QEMU_VIRTIO_PCI_H
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#include "hw/pci/msi.h"
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#include "virtio-blk.h"
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#include "virtio-net.h"
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#include "virtio-rng.h"
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#include "virtio-serial.h"
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#include "virtio-scsi.h"
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#include "virtio-bus.h"
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typedef struct VirtIOPCIProxy VirtIOPCIProxy;
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/* virtio-pci-bus */
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typedef struct VirtioBusState VirtioPCIBusState;
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typedef struct VirtioBusClass VirtioPCIBusClass;
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#define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
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#define VIRTIO_PCI_BUS(obj) \
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OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)
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#define VIRTIO_PCI_BUS_GET_CLASS(obj) \
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OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)
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#define VIRTIO_PCI_BUS_CLASS(klass) \
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OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)
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/* Performance improves when virtqueue kick processing is decoupled from the
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* vcpu thread using ioeventfd for some devices. */
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#define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1
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#define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
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typedef struct {
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MSIMessage msg;
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int virq;
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unsigned int users;
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} VirtIOIRQFD;
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/*
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* virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
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*/
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#define TYPE_VIRTIO_PCI "virtio-pci"
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#define VIRTIO_PCI_GET_CLASS(obj) \
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OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI)
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#define VIRTIO_PCI_CLASS(klass) \
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OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI)
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#define VIRTIO_PCI(obj) \
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OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI)
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typedef struct VirtioPCIClass {
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PCIDeviceClass parent_class;
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int (*init)(VirtIOPCIProxy *vpci_dev);
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} VirtioPCIClass;
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struct VirtIOPCIProxy {
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PCIDevice pci_dev;
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VirtIODevice *vdev;
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MemoryRegion bar;
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uint32_t flags;
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uint32_t class_code;
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uint32_t nvectors;
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VirtIOBlkConf blk;
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NICConf nic;
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uint32_t host_features;
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#ifdef CONFIG_LINUX
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V9fsConf fsconf;
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#endif
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virtio_serial_conf serial;
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virtio_net_conf net;
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VirtIOSCSIConf scsi;
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VirtIORNGConf rng;
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bool ioeventfd_disabled;
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bool ioeventfd_started;
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VirtIOIRQFD *vector_irqfd;
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int nvqs_with_notifiers;
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VirtioBusState bus;
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};
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void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
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void virtio_pci_reset(DeviceState *d);
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void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);
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/* Virtio ABI version, if we increment this, we break the guest driver. */
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#define VIRTIO_PCI_ABI_VERSION 0
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#endif
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