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