hw/virtio/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/virtio-blk.h"
  20 #include "hw/virtio/virtio-net.h"
  21 #include "hw/virtio/virtio-rng.h"
  22 #include "hw/virtio/virtio-serial.h"
  23 #include "hw/virtio/virtio-scsi.h"
  24 #include "hw/virtio/virtio-balloon.h"
  25 #include "hw/virtio/virtio-bus.h"
  26 #include "hw/virtio/virtio-9p.h"
  27 #ifdef CONFIG_VIRTFS
  28 #include "hw/9pfs/virtio-9p.h"
  29 #endif
  30 #ifdef CONFIG_VHOST_SCSI
  31 #include "hw/virtio/vhost-scsi.h"
  32 #endif
  33
  34 typedef struct VirtIOPCIProxy VirtIOPCIProxy;
  35 typedef struct VirtIOBlkPCI VirtIOBlkPCI;
  36 typedef struct VirtIOSCSIPCI VirtIOSCSIPCI;
  37 typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;
  38 typedef struct VirtIOSerialPCI VirtIOSerialPCI;
  39 typedef struct VirtIONetPCI VirtIONetPCI;
  40 typedef struct VHostSCSIPCI VHostSCSIPCI;
  41 typedef struct VirtIORngPCI VirtIORngPCI;
  42
  43 /* virtio-pci-bus */
  44
  45 typedef struct VirtioBusState VirtioPCIBusState;
  46 typedef struct VirtioBusClass VirtioPCIBusClass;
  47
  48 #define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
  49 #define VIRTIO_PCI_BUS(obj) \
  50         OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)
  51 #define VIRTIO_PCI_BUS_GET_CLASS(obj) \
  52         OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)
  53 #define VIRTIO_PCI_BUS_CLASS(klass) \
  54         OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)
  55
  56 /* Need to activate work-arounds for buggy guests at vmstate load. */
  57 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT  0
  58 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION \
  59     (1 << VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT)
  60
  61 /* Performance improves when virtqueue kick processing is decoupled from the
  62  * vcpu thread using ioeventfd for some devices. */
  63 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1
  64 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD   (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
  65
  66 typedef struct {
  67     MSIMessage msg;
  68     int virq;
  69     unsigned int users;
  70 } VirtIOIRQFD;
  71
  72 /*
  73  * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
  74  */
  75 #define TYPE_VIRTIO_PCI "virtio-pci"
  76 #define VIRTIO_PCI_GET_CLASS(obj) \
  77         OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI)
  78 #define VIRTIO_PCI_CLASS(klass) \
  79         OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI)
  80 #define VIRTIO_PCI(obj) \
  81         OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI)
  82
  83 typedef struct VirtioPCIClass {
  84     PCIDeviceClass parent_class;
  85     void (*realize)(VirtIOPCIProxy *vpci_dev, Error **errp);
  86 } VirtioPCIClass;
  87
  88 struct VirtIOPCIProxy {
  89     PCIDevice pci_dev;
  90     MemoryRegion bar;
  91     uint32_t flags;
  92     uint32_t class_code;
  93     uint32_t nvectors;
  94     bool ioeventfd_disabled;
  95     bool ioeventfd_started;
  96     VirtIOIRQFD *vector_irqfd;
  97     int nvqs_with_notifiers;
  98     VirtioBusState bus;
  99 };
 100
 101
 102 /*
 103  * virtio-scsi-pci: This extends VirtioPCIProxy.
 104  */
 105 #define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci"
 106 #define VIRTIO_SCSI_PCI(obj) \
 107         OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI)
 108
 109 struct VirtIOSCSIPCI {
 110     VirtIOPCIProxy parent_obj;
 111     VirtIOSCSI vdev;
 112 };
 113
 114 #ifdef CONFIG_VHOST_SCSI
 115 /*
 116  * vhost-scsi-pci: This extends VirtioPCIProxy.
 117  */
 118 #define TYPE_VHOST_SCSI_PCI "vhost-scsi-pci"
 119 #define VHOST_SCSI_PCI(obj) \
 120         OBJECT_CHECK(VHostSCSIPCI, (obj), TYPE_VHOST_SCSI_PCI)
 121
 122 struct VHostSCSIPCI {
 123     VirtIOPCIProxy parent_obj;
 124     VHostSCSI vdev;
 125 };
 126 #endif
 127
 128 /*
 129  * virtio-blk-pci: This extends VirtioPCIProxy.
 130  */
 131 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"
 132 #define VIRTIO_BLK_PCI(obj) \
 133         OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
 134
 135 struct VirtIOBlkPCI {
 136     VirtIOPCIProxy parent_obj;
 137     VirtIOBlock vdev;
 138 };
 139
 140 /*
 141  * virtio-balloon-pci: This extends VirtioPCIProxy.
 142  */
 143 #define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci"
 144 #define VIRTIO_BALLOON_PCI(obj) \
 145         OBJECT_CHECK(VirtIOBalloonPCI, (obj), TYPE_VIRTIO_BALLOON_PCI)
 146
 147 struct VirtIOBalloonPCI {
 148     VirtIOPCIProxy parent_obj;
 149     VirtIOBalloon vdev;
 150 };
 151
 152 /*
 153  * virtio-serial-pci: This extends VirtioPCIProxy.
 154  */
 155 #define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci"
 156 #define VIRTIO_SERIAL_PCI(obj) \
 157         OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI)
 158
 159 struct VirtIOSerialPCI {
 160     VirtIOPCIProxy parent_obj;
 161     VirtIOSerial vdev;
 162 };
 163
 164 /*
 165  * virtio-net-pci: This extends VirtioPCIProxy.
 166  */
 167 #define TYPE_VIRTIO_NET_PCI "virtio-net-pci"
 168 #define VIRTIO_NET_PCI(obj) \
 169         OBJECT_CHECK(VirtIONetPCI, (obj), TYPE_VIRTIO_NET_PCI)
 170
 171 struct VirtIONetPCI {
 172     VirtIOPCIProxy parent_obj;
 173     VirtIONet vdev;
 174 };
 175
 176 /*
 177  * virtio-9p-pci: This extends VirtioPCIProxy.
 178  */
 179
 180 #ifdef CONFIG_VIRTFS
 181
 182 #define TYPE_VIRTIO_9P_PCI "virtio-9p-pci"
 183 #define VIRTIO_9P_PCI(obj) \
 184         OBJECT_CHECK(V9fsPCIState, (obj), TYPE_VIRTIO_9P_PCI)
 185
 186 typedef struct V9fsPCIState {
 187     VirtIOPCIProxy parent_obj;
 188     V9fsState vdev;
 189 } V9fsPCIState;
 190
 191 #endif
 192
 193 /*
 194  * virtio-rng-pci: This extends VirtioPCIProxy.
 195  */
 196 #define TYPE_VIRTIO_RNG_PCI "virtio-rng-pci"
 197 #define VIRTIO_RNG_PCI(obj) \
 198         OBJECT_CHECK(VirtIORngPCI, (obj), TYPE_VIRTIO_RNG_PCI)
 199
 200 struct VirtIORngPCI {
 201     VirtIOPCIProxy parent_obj;
 202     VirtIORNG vdev;
 203 };
 204
 205 /* Virtio ABI version, if we increment this, we break the guest driver. */
 206 #define VIRTIO_PCI_ABI_VERSION          0
 207
 208 #endif