hw/virtio-pci.c

   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
  16 #include <inttypes.h>
  17
  18 #include "virtio.h"
  19 #include "virtio-blk.h"
  20 #include "virtio-net.h"
  21 #include "pci.h"
  22 #include "sysemu.h"
  23 #include "msix.h"
  24 #include "net.h"
  25 #include "loader.h"
  26
  27 /* from Linux's linux/virtio_pci.h */
  28
  29 /* A 32-bit r/o bitmask of the features supported by the host */
  30 #define VIRTIO_PCI_HOST_FEATURES        0
  31
  32 /* A 32-bit r/w bitmask of features activated by the guest */
  33 #define VIRTIO_PCI_GUEST_FEATURES       4
  34
  35 /* A 32-bit r/w PFN for the currently selected queue */
  36 #define VIRTIO_PCI_QUEUE_PFN            8
  37
  38 /* A 16-bit r/o queue size for the currently selected queue */
  39 #define VIRTIO_PCI_QUEUE_NUM            12
  40
  41 /* A 16-bit r/w queue selector */
  42 #define VIRTIO_PCI_QUEUE_SEL            14
  43
  44 /* A 16-bit r/w queue notifier */
  45 #define VIRTIO_PCI_QUEUE_NOTIFY         16
  46
  47 /* An 8-bit device status register.  */
  48 #define VIRTIO_PCI_STATUS               18
  49
  50 /* An 8-bit r/o interrupt status register.  Reading the value will return the
  51  * current contents of the ISR and will also clear it.  This is effectively
  52  * a read-and-acknowledge. */
  53 #define VIRTIO_PCI_ISR                  19
  54
  55 /* MSI-X registers: only enabled if MSI-X is enabled. */
  56 /* A 16-bit vector for configuration changes. */
  57 #define VIRTIO_MSI_CONFIG_VECTOR        20
  58 /* A 16-bit vector for selected queue notifications. */
  59 #define VIRTIO_MSI_QUEUE_VECTOR         22
  60
  61 /* Config space size */
  62 #define VIRTIO_PCI_CONFIG_NOMSI         20
  63 #define VIRTIO_PCI_CONFIG_MSI           24
  64 #define VIRTIO_PCI_REGION_SIZE(dev)     (msix_present(dev) ? \
  65                                          VIRTIO_PCI_CONFIG_MSI : \
  66                                          VIRTIO_PCI_CONFIG_NOMSI)
  67
  68 /* The remaining space is defined by each driver as the per-driver
  69  * configuration space */
  70 #define VIRTIO_PCI_CONFIG(dev)          (msix_enabled(dev) ? \
  71                                          VIRTIO_PCI_CONFIG_MSI : \
  72                                          VIRTIO_PCI_CONFIG_NOMSI)
  73
  74 /* Virtio ABI version, if we increment this, we break the guest driver. */
  75 #define VIRTIO_PCI_ABI_VERSION          0
  76
  77 /* How many bits to shift physical queue address written to QUEUE_PFN.
  78  * 12 is historical, and due to x86 page size. */
  79 #define VIRTIO_PCI_QUEUE_ADDR_SHIFT    12
  80
  81 /* QEMU doesn't strictly need write barriers since everything runs in
  82  * lock-step.  We'll leave the calls to wmb() in though to make it obvious for
  83  * KVM or if kqemu gets SMP support.
  84  */
  85 #define wmb() do { } while (0)
  86
  87 /* PCI bindings.  */
  88
  89 typedef struct {
  90     PCIDevice pci_dev;
  91     VirtIODevice *vdev;
  92     uint32_t addr;
  93     uint32_t class_code;
  94     uint32_t nvectors;
  95     DriveInfo *dinfo;
  96     NICConf nic;
  97     uint32_t host_features;
  98 } VirtIOPCIProxy;
  99
 100 /* virtio device */
 101
 102 static void virtio_pci_notify(void *opaque, uint16_t vector)
 103 {
 104     VirtIOPCIProxy *proxy = opaque;
 105     if (msix_enabled(&proxy->pci_dev))
 106         msix_notify(&proxy->pci_dev, vector);
 107     else
 108         qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1);
 109 }
 110
 111 static void virtio_pci_save_config(void * opaque, QEMUFile *f)
 112 {
 113     VirtIOPCIProxy *proxy = opaque;
 114     pci_device_save(&proxy->pci_dev, f);
 115     msix_save(&proxy->pci_dev, f);
 116     if (msix_present(&proxy->pci_dev))
 117         qemu_put_be16(f, proxy->vdev->config_vector);
 118 }
 119
 120 static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f)
 121 {
 122     VirtIOPCIProxy *proxy = opaque;
 123     if (msix_present(&proxy->pci_dev))
 124         qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n));
 125 }
 126
 127 static int virtio_pci_load_config(void * opaque, QEMUFile *f)
 128 {
 129     VirtIOPCIProxy *proxy = opaque;
 130     int ret;
 131     ret = pci_device_load(&proxy->pci_dev, f);
 132     if (ret) {
 133         return ret;
 134     }
 135     msix_load(&proxy->pci_dev, f);
 136     if (msix_present(&proxy->pci_dev)) {
 137         qemu_get_be16s(f, &proxy->vdev->config_vector);
 138     } else {
 139         proxy->vdev->config_vector = VIRTIO_NO_VECTOR;
 140     }
 141     if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) {
 142         return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector);
 143     }
 144     return 0;
 145 }
 146
 147 static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f)
 148 {
 149     VirtIOPCIProxy *proxy = opaque;
 150     uint16_t vector;
 151     if (msix_present(&proxy->pci_dev)) {
 152         qemu_get_be16s(f, &vector);
 153     } else {
 154         vector = VIRTIO_NO_VECTOR;
 155     }
 156     virtio_queue_set_vector(proxy->vdev, n, vector);
 157     if (vector != VIRTIO_NO_VECTOR) {
 158         return msix_vector_use(&proxy->pci_dev, vector);
 159     }
 160     return 0;
 161 }
 162
 163 static void virtio_pci_reset(DeviceState *d)
 164 {
 165     VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev);
 166     virtio_reset(proxy->vdev);
 167     msix_reset(&proxy->pci_dev);
 168 }
 169
 170 static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
 171 {
 172     VirtIOPCIProxy *proxy = opaque;
 173     VirtIODevice *vdev = proxy->vdev;
 174     target_phys_addr_t pa;
 175
 176     switch (addr) {
 177     case VIRTIO_PCI_GUEST_FEATURES:
 178         /* Guest does not negotiate properly?  We have to assume nothing. */
 179         if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
 180             if (vdev->bad_features)
 181                 val = proxy->host_features & vdev->bad_features(vdev);
 182             else
 183                 val = 0;
 184         }
 185         if (vdev->set_features)
 186             vdev->set_features(vdev, val);
 187         vdev->guest_features = val;
 188         break;
 189     case VIRTIO_PCI_QUEUE_PFN:
 190         pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
 191         if (pa == 0) {
 192             virtio_reset(proxy->vdev);
 193             msix_unuse_all_vectors(&proxy->pci_dev);
 194         }
 195         else
 196             virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
 197         break;
 198     case VIRTIO_PCI_QUEUE_SEL:
 199         if (val < VIRTIO_PCI_QUEUE_MAX)
 200             vdev->queue_sel = val;
 201         break;
 202     case VIRTIO_PCI_QUEUE_NOTIFY:
 203         virtio_queue_notify(vdev, val);
 204         break;
 205     case VIRTIO_PCI_STATUS:
 206         vdev->status = val & 0xFF;
 207         if (vdev->status == 0) {
 208             virtio_reset(proxy->vdev);
 209             msix_unuse_all_vectors(&proxy->pci_dev);
 210         }
 211         break;
 212     case VIRTIO_MSI_CONFIG_VECTOR:
 213         msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
 214         /* Make it possible for guest to discover an error took place. */
 215         if (msix_vector_use(&proxy->pci_dev, val) < 0)
 216             val = VIRTIO_NO_VECTOR;
 217         vdev->config_vector = val;
 218         break;
 219     case VIRTIO_MSI_QUEUE_VECTOR:
 220         msix_vector_unuse(&proxy->pci_dev,
 221                           virtio_queue_vector(vdev, vdev->queue_sel));
 222         /* Make it possible for guest to discover an error took place. */
 223         if (msix_vector_use(&proxy->pci_dev, val) < 0)
 224             val = VIRTIO_NO_VECTOR;
 225         virtio_queue_set_vector(vdev, vdev->queue_sel, val);
 226         break;
 227     default:
 228         fprintf(stderr, "%s: unexpected address 0x%x value 0x%x\n",
 229                 __func__, addr, val);
 230         break;
 231     }
 232 }
 233
 234 static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
 235 {
 236     VirtIODevice *vdev = proxy->vdev;
 237     uint32_t ret = 0xFFFFFFFF;
 238
 239     switch (addr) {
 240     case VIRTIO_PCI_HOST_FEATURES:
 241         ret = proxy->host_features;
 242         break;
 243     case VIRTIO_PCI_GUEST_FEATURES:
 244         ret = vdev->guest_features;
 245         break;
 246     case VIRTIO_PCI_QUEUE_PFN:
 247         ret = virtio_queue_get_addr(vdev, vdev->queue_sel)
 248               >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
 249         break;
 250     case VIRTIO_PCI_QUEUE_NUM:
 251         ret = virtio_queue_get_num(vdev, vdev->queue_sel);
 252         break;
 253     case VIRTIO_PCI_QUEUE_SEL:
 254         ret = vdev->queue_sel;
 255         break;
 256     case VIRTIO_PCI_STATUS:
 257         ret = vdev->status;
 258         break;
 259     case VIRTIO_PCI_ISR:
 260         /* reading from the ISR also clears it. */
 261         ret = vdev->isr;
 262         vdev->isr = 0;
 263         qemu_set_irq(proxy->pci_dev.irq[0], 0);
 264         break;
 265     case VIRTIO_MSI_CONFIG_VECTOR:
 266         ret = vdev->config_vector;
 267         break;
 268     case VIRTIO_MSI_QUEUE_VECTOR:
 269         ret = virtio_queue_vector(vdev, vdev->queue_sel);
 270         break;
 271     default:
 272         break;
 273     }
 274
 275     return ret;
 276 }
 277
 278 static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr)
 279 {
 280     VirtIOPCIProxy *proxy = opaque;
 281     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 282     addr -= proxy->addr;
 283     if (addr < config)
 284         return virtio_ioport_read(proxy, addr);
 285     addr -= config;
 286     return virtio_config_readb(proxy->vdev, addr);
 287 }
 288
 289 static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr)
 290 {
 291     VirtIOPCIProxy *proxy = opaque;
 292     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 293     addr -= proxy->addr;
 294     if (addr < config)
 295         return virtio_ioport_read(proxy, addr);
 296     addr -= config;
 297     return virtio_config_readw(proxy->vdev, addr);
 298 }
 299
 300 static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr)
 301 {
 302     VirtIOPCIProxy *proxy = opaque;
 303     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 304     addr -= proxy->addr;
 305     if (addr < config)
 306         return virtio_ioport_read(proxy, addr);
 307     addr -= config;
 308     return virtio_config_readl(proxy->vdev, addr);
 309 }
 310
 311 static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val)
 312 {
 313     VirtIOPCIProxy *proxy = opaque;
 314     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 315     addr -= proxy->addr;
 316     if (addr < config) {
 317         virtio_ioport_write(proxy, addr, val);
 318         return;
 319     }
 320     addr -= config;
 321     virtio_config_writeb(proxy->vdev, addr, val);
 322 }
 323
 324 static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val)
 325 {
 326     VirtIOPCIProxy *proxy = opaque;
 327     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 328     addr -= proxy->addr;
 329     if (addr < config) {
 330         virtio_ioport_write(proxy, addr, val);
 331         return;
 332     }
 333     addr -= config;
 334     virtio_config_writew(proxy->vdev, addr, val);
 335 }
 336
 337 static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val)
 338 {
 339     VirtIOPCIProxy *proxy = opaque;
 340     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 341     addr -= proxy->addr;
 342     if (addr < config) {
 343         virtio_ioport_write(proxy, addr, val);
 344         return;
 345     }
 346     addr -= config;
 347     virtio_config_writel(proxy->vdev, addr, val);
 348 }
 349
 350 static void virtio_map(PCIDevice *pci_dev, int region_num,
 351                        pcibus_t addr, pcibus_t size, int type)
 352 {
 353     VirtIOPCIProxy *proxy = container_of(pci_dev, VirtIOPCIProxy, pci_dev);
 354     VirtIODevice *vdev = proxy->vdev;
 355     unsigned config_len = VIRTIO_PCI_REGION_SIZE(pci_dev) + vdev->config_len;
 356
 357     proxy->addr = addr;
 358
 359     register_ioport_write(addr, config_len, 1, virtio_pci_config_writeb, proxy);
 360     register_ioport_write(addr, config_len, 2, virtio_pci_config_writew, proxy);
 361     register_ioport_write(addr, config_len, 4, virtio_pci_config_writel, proxy);
 362     register_ioport_read(addr, config_len, 1, virtio_pci_config_readb, proxy);
 363     register_ioport_read(addr, config_len, 2, virtio_pci_config_readw, proxy);
 364     register_ioport_read(addr, config_len, 4, virtio_pci_config_readl, proxy);
 365
 366     if (vdev->config_len)
 367         vdev->get_config(vdev, vdev->config);
 368 }
 369
 370 static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
 371                                 uint32_t val, int len)
 372 {
 373     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 374
 375     if (PCI_COMMAND == address) {
 376         if (!(val & PCI_COMMAND_MASTER)) {
 377             proxy->vdev->status &= ~VIRTIO_CONFIG_S_DRIVER_OK;
 378         }
 379     }
 380
 381     pci_default_write_config(pci_dev, address, val, len);
 382     msix_write_config(pci_dev, address, val, len);
 383 }
 384
 385 static unsigned virtio_pci_get_features(void *opaque)
 386 {
 387     VirtIOPCIProxy *proxy = opaque;
 388     return proxy->host_features;
 389 }
 390
 391 static const VirtIOBindings virtio_pci_bindings = {
 392     .notify = virtio_pci_notify,
 393     .save_config = virtio_pci_save_config,
 394     .load_config = virtio_pci_load_config,
 395     .save_queue = virtio_pci_save_queue,
 396     .load_queue = virtio_pci_load_queue,
 397     .get_features = virtio_pci_get_features,
 398 };
 399
 400 static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
 401                             uint16_t vendor, uint16_t device,
 402                             uint16_t class_code, uint8_t pif)
 403 {
 404     uint8_t *config;
 405     uint32_t size;
 406
 407     proxy->vdev = vdev;
 408
 409     config = proxy->pci_dev.config;
 410     pci_config_set_vendor_id(config, vendor);
 411     pci_config_set_device_id(config, device);
 412
 413     config[0x08] = VIRTIO_PCI_ABI_VERSION;
 414
 415     config[0x09] = pif;
 416     pci_config_set_class(config, class_code);
 417     config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL;
 418
 419     config[0x2c] = vendor & 0xFF;
 420     config[0x2d] = (vendor >> 8) & 0xFF;
 421     config[0x2e] = vdev->device_id & 0xFF;
 422     config[0x2f] = (vdev->device_id >> 8) & 0xFF;
 423
 424     config[0x3d] = 1;
 425
 426     if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, 1, 0)) {
 427         pci_register_bar(&proxy->pci_dev, 1,
 428                          msix_bar_size(&proxy->pci_dev),
 429                          PCI_BASE_ADDRESS_SPACE_MEMORY,
 430                          msix_mmio_map);
 431     } else
 432         vdev->nvectors = 0;
 433
 434     proxy->pci_dev.config_write = virtio_write_config;
 435
 436     size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len;
 437     if (size & (size-1))
 438         size = 1 << qemu_fls(size);
 439
 440     pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO,
 441                            virtio_map);
 442
 443     virtio_bind_device(vdev, &virtio_pci_bindings, proxy);
 444     proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
 445     proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
 446     proxy->host_features = vdev->get_features(vdev, proxy->host_features);
 447 }
 448
 449 static int virtio_blk_init_pci(PCIDevice *pci_dev)
 450 {
 451     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 452     VirtIODevice *vdev;
 453
 454     if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
 455         proxy->class_code != PCI_CLASS_STORAGE_OTHER)
 456         proxy->class_code = PCI_CLASS_STORAGE_SCSI;
 457
 458     if (!proxy->dinfo) {
 459         qemu_error("virtio-blk-pci: drive property not set\n");
 460         return -1;
 461     }
 462     vdev = virtio_blk_init(&pci_dev->qdev, proxy->dinfo);
 463     vdev->nvectors = proxy->nvectors;
 464     virtio_init_pci(proxy, vdev,
 465                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 466                     PCI_DEVICE_ID_VIRTIO_BLOCK,
 467                     proxy->class_code, 0x00);
 468     /* make the actual value visible */
 469     proxy->nvectors = vdev->nvectors;
 470     return 0;
 471 }
 472
 473 static int virtio_exit_pci(PCIDevice *pci_dev)
 474 {
 475     return msix_uninit(pci_dev);
 476 }
 477
 478 static int virtio_blk_exit_pci(PCIDevice *pci_dev)
 479 {
 480     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 481
 482     drive_uninit(proxy->dinfo);
 483     return virtio_exit_pci(pci_dev);
 484 }
 485
 486 static int virtio_console_init_pci(PCIDevice *pci_dev)
 487 {
 488     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 489     VirtIODevice *vdev;
 490
 491     if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
 492         proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
 493         proxy->class_code != PCI_CLASS_OTHERS)          /* qemu-kvm  */
 494         proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER;
 495
 496     vdev = virtio_console_init(&pci_dev->qdev);
 497     if (!vdev) {
 498         return -1;
 499     }
 500     virtio_init_pci(proxy, vdev,
 501                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 502                     PCI_DEVICE_ID_VIRTIO_CONSOLE,
 503                     proxy->class_code, 0x00);
 504     return 0;
 505 }
 506
 507 static int virtio_net_init_pci(PCIDevice *pci_dev)
 508 {
 509     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 510     VirtIODevice *vdev;
 511
 512     vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic);
 513
 514     vdev->nvectors = proxy->nvectors;
 515     virtio_init_pci(proxy, vdev,
 516                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 517                     PCI_DEVICE_ID_VIRTIO_NET,
 518                     PCI_CLASS_NETWORK_ETHERNET,
 519                     0x00);
 520
 521     /* make the actual value visible */
 522     proxy->nvectors = vdev->nvectors;
 523     return 0;
 524 }
 525
 526 static int virtio_net_exit_pci(PCIDevice *pci_dev)
 527 {
 528     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 529
 530     virtio_net_exit(proxy->vdev);
 531     return virtio_exit_pci(pci_dev);
 532 }
 533
 534 static int virtio_balloon_init_pci(PCIDevice *pci_dev)
 535 {
 536     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 537     VirtIODevice *vdev;
 538
 539     vdev = virtio_balloon_init(&pci_dev->qdev);
 540     virtio_init_pci(proxy, vdev,
 541                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 542                     PCI_DEVICE_ID_VIRTIO_BALLOON,
 543                     PCI_CLASS_MEMORY_RAM,
 544                     0x00);
 545     return 0;
 546 }
 547
 548 static PCIDeviceInfo virtio_info[] = {
 549     {
 550         .qdev.name = "virtio-blk-pci",
 551         .qdev.size = sizeof(VirtIOPCIProxy),
 552         .init      = virtio_blk_init_pci,
 553         .exit      = virtio_blk_exit_pci,
 554         .qdev.props = (Property[]) {
 555             DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
 556             DEFINE_PROP_DRIVE("drive", VirtIOPCIProxy, dinfo),
 557             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
 558             DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
 559             DEFINE_PROP_END_OF_LIST(),
 560         },
 561         .qdev.reset = virtio_pci_reset,
 562     },{
 563         .qdev.name  = "virtio-net-pci",
 564         .qdev.size  = sizeof(VirtIOPCIProxy),
 565         .init       = virtio_net_init_pci,
 566         .exit       = virtio_net_exit_pci,
 567         .romfile    = "pxe-virtio.bin",
 568         .qdev.props = (Property[]) {
 569             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
 570             DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features),
 571             DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic),
 572             DEFINE_PROP_END_OF_LIST(),
 573         },
 574         .qdev.reset = virtio_pci_reset,
 575     },{
 576         .qdev.name = "virtio-console-pci",
 577         .qdev.size = sizeof(VirtIOPCIProxy),
 578         .init      = virtio_console_init_pci,
 579         .exit      = virtio_exit_pci,
 580         .qdev.props = (Property[]) {
 581             DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
 582             DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
 583             DEFINE_PROP_END_OF_LIST(),
 584         },
 585         .qdev.reset = virtio_pci_reset,
 586     },{
 587         .qdev.name = "virtio-balloon-pci",
 588         .qdev.size = sizeof(VirtIOPCIProxy),
 589         .init      = virtio_balloon_init_pci,
 590         .exit      = virtio_exit_pci,
 591         .qdev.props = (Property[]) {
 592             DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
 593             DEFINE_PROP_END_OF_LIST(),
 594         },
 595         .qdev.reset = virtio_pci_reset,
 596     },{
 597         /* end of list */
 598     }
 599 };
 600
 601 static void virtio_pci_register_devices(void)
 602 {
 603     pci_qdev_register_many(virtio_info);
 604 }
 605
 606 device_init(virtio_pci_register_devices)