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 "hw/pci/msi.h"
  19 #include "hw/virtio-blk.h"
  20 #include "hw/virtio-net.h"
  21 #include "hw/virtio-rng.h"
  22 #include "hw/virtio-serial.h"
  23 #include "hw/virtio-scsi.h"
  24 #include "hw/virtio-balloon.h"
  25 #include "hw/virtio-bus.h"
  26 #include "hw/9pfs/virtio-9p-device.h"
  27
  28 typedef struct VirtIOPCIProxy VirtIOPCIProxy;
  29 typedef struct VirtIOBlkPCI VirtIOBlkPCI;
  30 typedef struct VirtIOSCSIPCI VirtIOSCSIPCI;
  31 typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;
  32
  33 /* virtio-pci-bus */
  34
  35 typedef struct VirtioBusState VirtioPCIBusState;
  36 typedef struct VirtioBusClass VirtioPCIBusClass;
  37
  38 #define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
  39 #define VIRTIO_PCI_BUS(obj) \
  40         OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)
  41 #define VIRTIO_PCI_BUS_GET_CLASS(obj) \
  42         OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)
  43 #define VIRTIO_PCI_BUS_CLASS(klass) \
  44         OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)
  45
  46 /* Performance improves when virtqueue kick processing is decoupled from the
  47  * vcpu thread using ioeventfd for some devices. */
  48 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1
  49 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD   (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
  50
  51 typedef struct {
  52     MSIMessage msg;
  53     int virq;
  54     unsigned int users;
  55 } VirtIOIRQFD;
  56
  57 /*
  58  * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
  59  */
  60 #define TYPE_VIRTIO_PCI "virtio-pci"
  61 #define VIRTIO_PCI_GET_CLASS(obj) \
  62         OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI)
  63 #define VIRTIO_PCI_CLASS(klass) \
  64         OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI)
  65 #define VIRTIO_PCI(obj) \
  66         OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI)
  67
  68 typedef struct VirtioPCIClass {
  69     PCIDeviceClass parent_class;
  70     int (*init)(VirtIOPCIProxy *vpci_dev);
  71 } VirtioPCIClass;
  72
  73 struct VirtIOPCIProxy {
  74     PCIDevice pci_dev;
  75     VirtIODevice *vdev;
  76     MemoryRegion bar;
  77     uint32_t flags;
  78     uint32_t class_code;
  79     uint32_t nvectors;
  80     NICConf nic;
  81     uint32_t host_features;
  82 #ifdef CONFIG_VIRTFS
  83     V9fsConf fsconf;
  84 #endif
  85     virtio_serial_conf serial;
  86     virtio_net_conf net;
  87     VirtIORNGConf rng;
  88     bool ioeventfd_disabled;
  89     bool ioeventfd_started;
  90     VirtIOIRQFD *vector_irqfd;
  91     int nvqs_with_notifiers;
  92     VirtioBusState bus;
  93 };
  94
  95
  96 /*
  97  * virtio-scsi-pci: This extends VirtioPCIProxy.
  98  */
  99 #define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci"
 100 #define VIRTIO_SCSI_PCI(obj) \
 101         OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI)
 102
 103 struct VirtIOSCSIPCI {
 104     VirtIOPCIProxy parent_obj;
 105     VirtIOSCSI vdev;
 106 };
 107
 108 /*
 109  * virtio-blk-pci: This extends VirtioPCIProxy.
 110  */
 111 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"
 112 #define VIRTIO_BLK_PCI(obj) \
 113         OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
 114
 115 struct VirtIOBlkPCI {
 116     VirtIOPCIProxy parent_obj;
 117     VirtIOBlock vdev;
 118     VirtIOBlkConf blk;
 119 };
 120
 121 /*
 122  * virtio-balloon-pci: This extends VirtioPCIProxy.
 123  */
 124 #define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci"
 125 #define VIRTIO_BALLOON_PCI(obj) \
 126         OBJECT_CHECK(VirtIOBalloonPCI, (obj), TYPE_VIRTIO_BALLOON_PCI)
 127
 128 struct VirtIOBalloonPCI {
 129     VirtIOPCIProxy parent_obj;
 130     VirtIOBalloon vdev;
 131 };
 132
 133 void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
 134 void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);
 135
 136 /* Virtio ABI version, if we increment this, we break the guest driver. */
 137 #define VIRTIO_PCI_ABI_VERSION          0
 138
 139 #endif