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-input.h"
  27 #include "hw/virtio/virtio-gpu.h"
  28 #ifdef CONFIG_VIRTFS
  29 #include "hw/9pfs/virtio-9p.h"
  30 #endif
  31 #ifdef CONFIG_VHOST_SCSI
  32 #include "hw/virtio/vhost-scsi.h"
  33 #endif
  34 #ifdef CONFIG_VHOST_VSOCK
  35 #include "hw/virtio/vhost-vsock.h"
  36 #endif
  37
  38 typedef struct VirtIOPCIProxy VirtIOPCIProxy;
  39 typedef struct VirtIOBlkPCI VirtIOBlkPCI;
  40 typedef struct VirtIOSCSIPCI VirtIOSCSIPCI;
  41 typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;
  42 typedef struct VirtIOSerialPCI VirtIOSerialPCI;
  43 typedef struct VirtIONetPCI VirtIONetPCI;
  44 typedef struct VHostSCSIPCI VHostSCSIPCI;
  45 typedef struct VirtIORngPCI VirtIORngPCI;
  46 typedef struct VirtIOInputPCI VirtIOInputPCI;
  47 typedef struct VirtIOInputHIDPCI VirtIOInputHIDPCI;
  48 typedef struct VirtIOInputHostPCI VirtIOInputHostPCI;
  49 typedef struct VirtIOGPUPCI VirtIOGPUPCI;
  50 typedef struct VHostVSockPCI VHostVSockPCI;
  51
  52 /* virtio-pci-bus */
  53
  54 typedef struct VirtioBusState VirtioPCIBusState;
  55 typedef struct VirtioBusClass VirtioPCIBusClass;
  56
  57 #define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
  58 #define VIRTIO_PCI_BUS(obj) \
  59         OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)
  60 #define VIRTIO_PCI_BUS_GET_CLASS(obj) \
  61         OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)
  62 #define VIRTIO_PCI_BUS_CLASS(klass) \
  63         OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)
  64
  65 enum {
  66     VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT,
  67     VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT,
  68     VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT,
  69     VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT,
  70     VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT,
  71     VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT,
  72 };
  73
  74 /* Need to activate work-arounds for buggy guests at vmstate load. */
  75 #define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION \
  76     (1 << VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT)
  77
  78 /* Performance improves when virtqueue kick processing is decoupled from the
  79  * vcpu thread using ioeventfd for some devices. */
  80 #define VIRTIO_PCI_FLAG_USE_IOEVENTFD   (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
  81
  82 /* virtio version flags */
  83 #define VIRTIO_PCI_FLAG_DISABLE_PCIE (1 << VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT)
  84
  85 /* migrate extra state */
  86 #define VIRTIO_PCI_FLAG_MIGRATE_EXTRA (1 << VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT)
  87
  88 /* have pio notification for modern device ? */
  89 #define VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY \
  90     (1 << VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT)
  91
  92 /* page per vq flag to be used by split drivers within guests */
  93 #define VIRTIO_PCI_FLAG_PAGE_PER_VQ \
  94     (1 << VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT)
  95
  96 typedef struct {
  97     MSIMessage msg;
  98     int virq;
  99     unsigned int users;
 100 } VirtIOIRQFD;
 101
 102 /*
 103  * virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
 104  */
 105 #define TYPE_VIRTIO_PCI "virtio-pci"
 106 #define VIRTIO_PCI_GET_CLASS(obj) \
 107         OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI)
 108 #define VIRTIO_PCI_CLASS(klass) \
 109         OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI)
 110 #define VIRTIO_PCI(obj) \
 111         OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI)
 112
 113 typedef struct VirtioPCIClass {
 114     PCIDeviceClass parent_class;
 115     DeviceRealize parent_dc_realize;
 116     void (*realize)(VirtIOPCIProxy *vpci_dev, Error **errp);
 117 } VirtioPCIClass;
 118
 119 typedef struct VirtIOPCIRegion {
 120     MemoryRegion mr;
 121     uint32_t offset;
 122     uint32_t size;
 123     uint32_t type;
 124 } VirtIOPCIRegion;
 125
 126 typedef struct VirtIOPCIQueue {
 127   uint16_t num;
 128   bool enabled;
 129   uint32_t desc[2];
 130   uint32_t avail[2];
 131   uint32_t used[2];
 132 } VirtIOPCIQueue;
 133
 134 struct VirtIOPCIProxy {
 135     PCIDevice pci_dev;
 136     MemoryRegion bar;
 137     VirtIOPCIRegion common;
 138     VirtIOPCIRegion isr;
 139     VirtIOPCIRegion device;
 140     VirtIOPCIRegion notify;
 141     VirtIOPCIRegion notify_pio;
 142     MemoryRegion modern_bar;
 143     MemoryRegion io_bar;
 144     MemoryRegion modern_cfg;
 145     AddressSpace modern_as;
 146     uint32_t legacy_io_bar_idx;
 147     uint32_t msix_bar_idx;
 148     uint32_t modern_io_bar_idx;
 149     uint32_t modern_mem_bar_idx;
 150     int config_cap;
 151     uint32_t flags;
 152     bool disable_modern;
 153     OnOffAuto disable_legacy;
 154     uint32_t class_code;
 155     uint32_t nvectors;
 156     uint32_t dfselect;
 157     uint32_t gfselect;
 158     uint32_t guest_features[2];
 159     VirtIOPCIQueue vqs[VIRTIO_QUEUE_MAX];
 160
 161     bool ioeventfd_disabled;
 162     bool ioeventfd_started;
 163     VirtIOIRQFD *vector_irqfd;
 164     int nvqs_with_notifiers;
 165     VirtioBusState bus;
 166 };
 167
 168 static inline bool virtio_pci_modern(VirtIOPCIProxy *proxy)
 169 {
 170     return !proxy->disable_modern;
 171 }
 172
 173 static inline bool virtio_pci_legacy(VirtIOPCIProxy *proxy)
 174 {
 175     return proxy->disable_legacy == ON_OFF_AUTO_OFF;
 176 }
 177
 178 static inline void virtio_pci_force_virtio_1(VirtIOPCIProxy *proxy)
 179 {
 180     proxy->disable_modern = false;
 181     proxy->disable_legacy = ON_OFF_AUTO_ON;
 182 }
 183
 184 static inline void virtio_pci_disable_modern(VirtIOPCIProxy *proxy)
 185 {
 186     proxy->disable_modern = true;
 187 }
 188
 189 /*
 190  * virtio-scsi-pci: This extends VirtioPCIProxy.
 191  */
 192 #define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci"
 193 #define VIRTIO_SCSI_PCI(obj) \
 194         OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI)
 195
 196 struct VirtIOSCSIPCI {
 197     VirtIOPCIProxy parent_obj;
 198     VirtIOSCSI vdev;
 199 };
 200
 201 #ifdef CONFIG_VHOST_SCSI
 202 /*
 203  * vhost-scsi-pci: This extends VirtioPCIProxy.
 204  */
 205 #define TYPE_VHOST_SCSI_PCI "vhost-scsi-pci"
 206 #define VHOST_SCSI_PCI(obj) \
 207         OBJECT_CHECK(VHostSCSIPCI, (obj), TYPE_VHOST_SCSI_PCI)
 208
 209 struct VHostSCSIPCI {
 210     VirtIOPCIProxy parent_obj;
 211     VHostSCSI vdev;
 212 };
 213 #endif
 214
 215 /*
 216  * virtio-blk-pci: This extends VirtioPCIProxy.
 217  */
 218 #define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"
 219 #define VIRTIO_BLK_PCI(obj) \
 220         OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
 221
 222 struct VirtIOBlkPCI {
 223     VirtIOPCIProxy parent_obj;
 224     VirtIOBlock vdev;
 225 };
 226
 227 /*
 228  * virtio-balloon-pci: This extends VirtioPCIProxy.
 229  */
 230 #define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci"
 231 #define VIRTIO_BALLOON_PCI(obj) \
 232         OBJECT_CHECK(VirtIOBalloonPCI, (obj), TYPE_VIRTIO_BALLOON_PCI)
 233
 234 struct VirtIOBalloonPCI {
 235     VirtIOPCIProxy parent_obj;
 236     VirtIOBalloon vdev;
 237 };
 238
 239 /*
 240  * virtio-serial-pci: This extends VirtioPCIProxy.
 241  */
 242 #define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci"
 243 #define VIRTIO_SERIAL_PCI(obj) \
 244         OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI)
 245
 246 struct VirtIOSerialPCI {
 247     VirtIOPCIProxy parent_obj;
 248     VirtIOSerial vdev;
 249 };
 250
 251 /*
 252  * virtio-net-pci: This extends VirtioPCIProxy.
 253  */
 254 #define TYPE_VIRTIO_NET_PCI "virtio-net-pci"
 255 #define VIRTIO_NET_PCI(obj) \
 256         OBJECT_CHECK(VirtIONetPCI, (obj), TYPE_VIRTIO_NET_PCI)
 257
 258 struct VirtIONetPCI {
 259     VirtIOPCIProxy parent_obj;
 260     VirtIONet vdev;
 261 };
 262
 263 /*
 264  * virtio-9p-pci: This extends VirtioPCIProxy.
 265  */
 266
 267 #ifdef CONFIG_VIRTFS
 268
 269 #define TYPE_VIRTIO_9P_PCI "virtio-9p-pci"
 270 #define VIRTIO_9P_PCI(obj) \
 271         OBJECT_CHECK(V9fsPCIState, (obj), TYPE_VIRTIO_9P_PCI)
 272
 273 typedef struct V9fsPCIState {
 274     VirtIOPCIProxy parent_obj;
 275     V9fsVirtioState vdev;
 276 } V9fsPCIState;
 277
 278 #endif
 279
 280 /*
 281  * virtio-rng-pci: This extends VirtioPCIProxy.
 282  */
 283 #define TYPE_VIRTIO_RNG_PCI "virtio-rng-pci"
 284 #define VIRTIO_RNG_PCI(obj) \
 285         OBJECT_CHECK(VirtIORngPCI, (obj), TYPE_VIRTIO_RNG_PCI)
 286
 287 struct VirtIORngPCI {
 288     VirtIOPCIProxy parent_obj;
 289     VirtIORNG vdev;
 290 };
 291
 292 /*
 293  * virtio-input-pci: This extends VirtioPCIProxy.
 294  */
 295 #define TYPE_VIRTIO_INPUT_PCI "virtio-input-pci"
 296 #define VIRTIO_INPUT_PCI(obj) \
 297         OBJECT_CHECK(VirtIOInputPCI, (obj), TYPE_VIRTIO_INPUT_PCI)
 298
 299 struct VirtIOInputPCI {
 300     VirtIOPCIProxy parent_obj;
 301     VirtIOInput vdev;
 302 };
 303
 304 #define TYPE_VIRTIO_INPUT_HID_PCI "virtio-input-hid-pci"
 305 #define TYPE_VIRTIO_KEYBOARD_PCI  "virtio-keyboard-pci"
 306 #define TYPE_VIRTIO_MOUSE_PCI     "virtio-mouse-pci"
 307 #define TYPE_VIRTIO_TABLET_PCI    "virtio-tablet-pci"
 308 #define VIRTIO_INPUT_HID_PCI(obj) \
 309         OBJECT_CHECK(VirtIOInputHIDPCI, (obj), TYPE_VIRTIO_INPUT_HID_PCI)
 310
 311 struct VirtIOInputHIDPCI {
 312     VirtIOPCIProxy parent_obj;
 313     VirtIOInputHID vdev;
 314 };
 315
 316 #ifdef CONFIG_LINUX
 317
 318 #define TYPE_VIRTIO_INPUT_HOST_PCI "virtio-input-host-pci"
 319 #define VIRTIO_INPUT_HOST_PCI(obj) \
 320         OBJECT_CHECK(VirtIOInputHostPCI, (obj), TYPE_VIRTIO_INPUT_HOST_PCI)
 321
 322 struct VirtIOInputHostPCI {
 323     VirtIOPCIProxy parent_obj;
 324     VirtIOInputHost vdev;
 325 };
 326
 327 #endif
 328
 329 /*
 330  * virtio-gpu-pci: This extends VirtioPCIProxy.
 331  */
 332 #define TYPE_VIRTIO_GPU_PCI "virtio-gpu-pci"
 333 #define VIRTIO_GPU_PCI(obj) \
 334         OBJECT_CHECK(VirtIOGPUPCI, (obj), TYPE_VIRTIO_GPU_PCI)
 335
 336 struct VirtIOGPUPCI {
 337     VirtIOPCIProxy parent_obj;
 338     VirtIOGPU vdev;
 339 };
 340
 341 #ifdef CONFIG_VHOST_VSOCK
 342 /*
 343  * vhost-vsock-pci: This extends VirtioPCIProxy.
 344  */
 345 #define TYPE_VHOST_VSOCK_PCI "vhost-vsock-pci"
 346 #define VHOST_VSOCK_PCI(obj) \
 347         OBJECT_CHECK(VHostVSockPCI, (obj), TYPE_VHOST_VSOCK_PCI)
 348
 349 struct VHostVSockPCI {
 350     VirtIOPCIProxy parent_obj;
 351     VHostVSock vdev;
 352 };
 353 #endif
 354
 355 /* Virtio ABI version, if we increment this, we break the guest driver. */
 356 #define VIRTIO_PCI_ABI_VERSION          0
 357
 358 #endif