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 #include "hw/virtio/virtio-input.h"
  28 #include "hw/virtio/virtio-gpu.h"
  29 #ifdef CONFIG_VIRTFS
  30 #include "hw/9pfs/virtio-9p.h"
  31 #endif
  32 #ifdef CONFIG_VHOST_SCSI
  33 #include "hw/virtio/vhost-scsi.h"
  34 #endif
  35
  36 typedef struct VirtIOPCIProxy VirtIOPCIProxy;
  37 typedef struct VirtIOBlkPCI VirtIOBlkPCI;
  38 typedef struct VirtIOSCSIPCI VirtIOSCSIPCI;
  39 typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;
  40 typedef struct VirtIOSerialPCI VirtIOSerialPCI;
  41 typedef struct VirtIONetPCI VirtIONetPCI;
  42 typedef struct VHostSCSIPCI VHostSCSIPCI;
  43 typedef struct VirtIORngPCI VirtIORngPCI;
  44 typedef struct VirtIOInputPCI VirtIOInputPCI;
  45 typedef struct VirtIOInputHIDPCI VirtIOInputHIDPCI;
  46 typedef struct VirtIOInputHostPCI VirtIOInputHostPCI;
  47 typedef struct VirtIOGPUPCI VirtIOGPUPCI;
  48
  49 /* virtio-pci-bus */
  50
  51 typedef struct VirtioBusState VirtioPCIBusState;
  52 typedef struct VirtioBusClass VirtioPCIBusClass;
  53
  54 #define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
  55 #define VIRTIO_PCI_BUS(obj) \
  56         OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)
  57 #define VIRTIO_PCI_BUS_GET_CLASS(obj) \
  58         OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)
  59 #define VIRTIO_PCI_BUS_CLASS(klass) \
  60         OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)
  61
  62 /* Need to activate work-arounds for buggy guests at vmstate load. */
  63 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT  0
  64 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION \
  65     (1 << VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT)
  66
  67 /* Performance improves when virtqueue kick processing is decoupled from the
  68  * vcpu thread using ioeventfd for some devices. */
  69 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1
  70 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD   (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
  71
  72 /* virtio version flags */
  73 #define VIRTIO_PCI_FLAG_DISABLE_LEGACY_BIT 2
  74 #define VIRTIO_PCI_FLAG_DISABLE_MODERN_BIT 3
  75 #define VIRTIO_PCI_FLAG_DISABLE_LEGACY (1 << VIRTIO_PCI_FLAG_DISABLE_LEGACY_BIT)
  76 #define VIRTIO_PCI_FLAG_DISABLE_MODERN (1 << VIRTIO_PCI_FLAG_DISABLE_MODERN_BIT)
  77
  78 typedef struct {
  79     MSIMessage msg;
  80     int virq;
  81     unsigned int users;
  82 } VirtIOIRQFD;
  83
  84 /*
  85  * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
  86  */
  87 #define TYPE_VIRTIO_PCI "virtio-pci"
  88 #define VIRTIO_PCI_GET_CLASS(obj) \
  89         OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI)
  90 #define VIRTIO_PCI_CLASS(klass) \
  91         OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI)
  92 #define VIRTIO_PCI(obj) \
  93         OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI)
  94
  95 typedef struct VirtioPCIClass {
  96     PCIDeviceClass parent_class;
  97     void (*realize)(VirtIOPCIProxy *vpci_dev, Error **errp);
  98 } VirtioPCIClass;
  99
 100 typedef struct VirtIOPCIRegion {
 101     MemoryRegion mr;
 102     uint32_t offset;
 103     uint32_t size;
 104     uint32_t type;
 105 } VirtIOPCIRegion;
 106
 107 struct VirtIOPCIProxy {
 108     PCIDevice pci_dev;
 109     MemoryRegion bar;
 110     VirtIOPCIRegion common;
 111     VirtIOPCIRegion isr;
 112     VirtIOPCIRegion device;
 113     VirtIOPCIRegion notify;
 114     MemoryRegion modern_bar;
 115     MemoryRegion modern_cfg;
 116     AddressSpace modern_as;
 117     uint32_t legacy_io_bar;
 118     uint32_t msix_bar;
 119     uint32_t modern_mem_bar;
 120     int config_cap;
 121     uint32_t flags;
 122     uint32_t class_code;
 123     uint32_t nvectors;
 124     uint32_t dfselect;
 125     uint32_t gfselect;
 126     uint32_t guest_features[2];
 127     struct {
 128         uint16_t num;
 129         bool enabled;
 130         uint32_t desc[2];
 131         uint32_t avail[2];
 132         uint32_t used[2];
 133     } vqs[VIRTIO_QUEUE_MAX];
 134
 135     bool ioeventfd_disabled;
 136     bool ioeventfd_started;
 137     VirtIOIRQFD *vector_irqfd;
 138     int nvqs_with_notifiers;
 139     VirtioBusState bus;
 140 };
 141
 142
 143 /*
 144  * virtio-scsi-pci: This extends VirtioPCIProxy.
 145  */
 146 #define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci"
 147 #define VIRTIO_SCSI_PCI(obj) \
 148         OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI)
 149
 150 struct VirtIOSCSIPCI {
 151     VirtIOPCIProxy parent_obj;
 152     VirtIOSCSI vdev;
 153 };
 154
 155 #ifdef CONFIG_VHOST_SCSI
 156 /*
 157  * vhost-scsi-pci: This extends VirtioPCIProxy.
 158  */
 159 #define TYPE_VHOST_SCSI_PCI "vhost-scsi-pci"
 160 #define VHOST_SCSI_PCI(obj) \
 161         OBJECT_CHECK(VHostSCSIPCI, (obj), TYPE_VHOST_SCSI_PCI)
 162
 163 struct VHostSCSIPCI {
 164     VirtIOPCIProxy parent_obj;
 165     VHostSCSI vdev;
 166 };
 167 #endif
 168
 169 /*
 170  * virtio-blk-pci: This extends VirtioPCIProxy.
 171  */
 172 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"
 173 #define VIRTIO_BLK_PCI(obj) \
 174         OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
 175
 176 struct VirtIOBlkPCI {
 177     VirtIOPCIProxy parent_obj;
 178     VirtIOBlock vdev;
 179 };
 180
 181 /*
 182  * virtio-balloon-pci: This extends VirtioPCIProxy.
 183  */
 184 #define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci"
 185 #define VIRTIO_BALLOON_PCI(obj) \
 186         OBJECT_CHECK(VirtIOBalloonPCI, (obj), TYPE_VIRTIO_BALLOON_PCI)
 187
 188 struct VirtIOBalloonPCI {
 189     VirtIOPCIProxy parent_obj;
 190     VirtIOBalloon vdev;
 191 };
 192
 193 /*
 194  * virtio-serial-pci: This extends VirtioPCIProxy.
 195  */
 196 #define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci"
 197 #define VIRTIO_SERIAL_PCI(obj) \
 198         OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI)
 199
 200 struct VirtIOSerialPCI {
 201     VirtIOPCIProxy parent_obj;
 202     VirtIOSerial vdev;
 203 };
 204
 205 /*
 206  * virtio-net-pci: This extends VirtioPCIProxy.
 207  */
 208 #define TYPE_VIRTIO_NET_PCI "virtio-net-pci"
 209 #define VIRTIO_NET_PCI(obj) \
 210         OBJECT_CHECK(VirtIONetPCI, (obj), TYPE_VIRTIO_NET_PCI)
 211
 212 struct VirtIONetPCI {
 213     VirtIOPCIProxy parent_obj;
 214     VirtIONet vdev;
 215 };
 216
 217 /*
 218  * virtio-9p-pci: This extends VirtioPCIProxy.
 219  */
 220
 221 #ifdef CONFIG_VIRTFS
 222
 223 #define TYPE_VIRTIO_9P_PCI "virtio-9p-pci"
 224 #define VIRTIO_9P_PCI(obj) \
 225         OBJECT_CHECK(V9fsPCIState, (obj), TYPE_VIRTIO_9P_PCI)
 226
 227 typedef struct V9fsPCIState {
 228     VirtIOPCIProxy parent_obj;
 229     V9fsState vdev;
 230 } V9fsPCIState;
 231
 232 #endif
 233
 234 /*
 235  * virtio-rng-pci: This extends VirtioPCIProxy.
 236  */
 237 #define TYPE_VIRTIO_RNG_PCI "virtio-rng-pci"
 238 #define VIRTIO_RNG_PCI(obj) \
 239         OBJECT_CHECK(VirtIORngPCI, (obj), TYPE_VIRTIO_RNG_PCI)
 240
 241 struct VirtIORngPCI {
 242     VirtIOPCIProxy parent_obj;
 243     VirtIORNG vdev;
 244 };
 245
 246 /*
 247  * virtio-input-pci: This extends VirtioPCIProxy.
 248  */
 249 #define TYPE_VIRTIO_INPUT_PCI "virtio-input-pci"
 250 #define VIRTIO_INPUT_PCI(obj) \
 251         OBJECT_CHECK(VirtIOInputPCI, (obj), TYPE_VIRTIO_INPUT_PCI)
 252
 253 struct VirtIOInputPCI {
 254     VirtIOPCIProxy parent_obj;
 255     VirtIOInput vdev;
 256 };
 257
 258 #define TYPE_VIRTIO_INPUT_HID_PCI "virtio-input-hid-pci"
 259 #define TYPE_VIRTIO_KEYBOARD_PCI  "virtio-keyboard-pci"
 260 #define TYPE_VIRTIO_MOUSE_PCI     "virtio-mouse-pci"
 261 #define TYPE_VIRTIO_TABLET_PCI    "virtio-tablet-pci"
 262 #define VIRTIO_INPUT_HID_PCI(obj) \
 263         OBJECT_CHECK(VirtIOInputHIDPCI, (obj), TYPE_VIRTIO_INPUT_HID_PCI)
 264
 265 struct VirtIOInputHIDPCI {
 266     VirtIOPCIProxy parent_obj;
 267     VirtIOInputHID vdev;
 268 };
 269
 270 #ifdef CONFIG_LINUX
 271
 272 #define TYPE_VIRTIO_INPUT_HOST_PCI "virtio-input-host-pci"
 273 #define VIRTIO_INPUT_HOST_PCI(obj) \
 274         OBJECT_CHECK(VirtIOInputHostPCI, (obj), TYPE_VIRTIO_INPUT_HOST_PCI)
 275
 276 struct VirtIOInputHostPCI {
 277     VirtIOPCIProxy parent_obj;
 278     VirtIOInputHost vdev;
 279 };
 280
 281 #endif
 282
 283 /*
 284  * virtio-gpu-pci: This extends VirtioPCIProxy.
 285  */
 286 #define TYPE_VIRTIO_GPU_PCI "virtio-gpu-pci"
 287 #define VIRTIO_GPU_PCI(obj) \
 288         OBJECT_CHECK(VirtIOGPUPCI, (obj), TYPE_VIRTIO_GPU_PCI)
 289
 290 struct VirtIOGPUPCI {
 291     VirtIOPCIProxy parent_obj;
 292     VirtIOGPU vdev;
 293 };
 294
 295 /* Virtio ABI version, if we increment this, we break the guest driver. */
 296 #define VIRTIO_PCI_ABI_VERSION          0
 297
 298 #endif