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     uint32_t host_features;
  95     bool ioeventfd_disabled;
  96     bool ioeventfd_started;
  97     VirtIOIRQFD *vector_irqfd;
  98     int nvqs_with_notifiers;
  99     VirtioBusState bus;
 100 };
 101
 102
 103 /*
 104  * virtio-scsi-pci: This extends VirtioPCIProxy.
 105  */
 106 #define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci"
 107 #define VIRTIO_SCSI_PCI(obj) \
 108         OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI)
 109
 110 struct VirtIOSCSIPCI {
 111     VirtIOPCIProxy parent_obj;
 112     VirtIOSCSI vdev;
 113 };
 114
 115 #ifdef CONFIG_VHOST_SCSI
 116 /*
 117  * vhost-scsi-pci: This extends VirtioPCIProxy.
 118  */
 119 #define TYPE_VHOST_SCSI_PCI "vhost-scsi-pci"
 120 #define VHOST_SCSI_PCI(obj) \
 121         OBJECT_CHECK(VHostSCSIPCI, (obj), TYPE_VHOST_SCSI_PCI)
 122
 123 struct VHostSCSIPCI {
 124     VirtIOPCIProxy parent_obj;
 125     VHostSCSI vdev;
 126 };
 127 #endif
 128
 129 /*
 130  * virtio-blk-pci: This extends VirtioPCIProxy.
 131  */
 132 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"
 133 #define VIRTIO_BLK_PCI(obj) \
 134         OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
 135
 136 struct VirtIOBlkPCI {
 137     VirtIOPCIProxy parent_obj;
 138     VirtIOBlock vdev;
 139 };
 140
 141 /*
 142  * virtio-balloon-pci: This extends VirtioPCIProxy.
 143  */
 144 #define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci"
 145 #define VIRTIO_BALLOON_PCI(obj) \
 146         OBJECT_CHECK(VirtIOBalloonPCI, (obj), TYPE_VIRTIO_BALLOON_PCI)
 147
 148 struct VirtIOBalloonPCI {
 149     VirtIOPCIProxy parent_obj;
 150     VirtIOBalloon vdev;
 151 };
 152
 153 /*
 154  * virtio-serial-pci: This extends VirtioPCIProxy.
 155  */
 156 #define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci"
 157 #define VIRTIO_SERIAL_PCI(obj) \
 158         OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI)
 159
 160 struct VirtIOSerialPCI {
 161     VirtIOPCIProxy parent_obj;
 162     VirtIOSerial vdev;
 163 };
 164
 165 /*
 166  * virtio-net-pci: This extends VirtioPCIProxy.
 167  */
 168 #define TYPE_VIRTIO_NET_PCI "virtio-net-pci"
 169 #define VIRTIO_NET_PCI(obj) \
 170         OBJECT_CHECK(VirtIONetPCI, (obj), TYPE_VIRTIO_NET_PCI)
 171
 172 struct VirtIONetPCI {
 173     VirtIOPCIProxy parent_obj;
 174     VirtIONet vdev;
 175 };
 176
 177 /*
 178  * virtio-9p-pci: This extends VirtioPCIProxy.
 179  */
 180
 181 #ifdef CONFIG_VIRTFS
 182
 183 #define TYPE_VIRTIO_9P_PCI "virtio-9p-pci"
 184 #define VIRTIO_9P_PCI(obj) \
 185         OBJECT_CHECK(V9fsPCIState, (obj), TYPE_VIRTIO_9P_PCI)
 186
 187 typedef struct V9fsPCIState {
 188     VirtIOPCIProxy parent_obj;
 189     V9fsState vdev;
 190 } V9fsPCIState;
 191
 192 #endif
 193
 194 /*
 195  * virtio-rng-pci: This extends VirtioPCIProxy.
 196  */
 197 #define TYPE_VIRTIO_RNG_PCI "virtio-rng-pci"
 198 #define VIRTIO_RNG_PCI(obj) \
 199         OBJECT_CHECK(VirtIORngPCI, (obj), TYPE_VIRTIO_RNG_PCI)
 200
 201 struct VirtIORngPCI {
 202     VirtIOPCIProxy parent_obj;
 203     VirtIORNG vdev;
 204 };
 205
 206 /* Virtio ABI version, if we increment this, we break the guest driver. */
 207 #define VIRTIO_PCI_ABI_VERSION          0
 208
 209 #endif