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     /* Max. number of ports we can have for a the virtio-serial device */
  99     uint32_t max_virtserial_ports;
 100 } VirtIOPCIProxy;
 101
 102 /* virtio device */
 103
 104 static void virtio_pci_notify(void *opaque, uint16_t vector)
 105 {
 106     VirtIOPCIProxy *proxy = opaque;
 107     if (msix_enabled(&proxy->pci_dev))
 108         msix_notify(&proxy->pci_dev, vector);
 109     else
 110         qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1);
 111 }
 112
 113 static void virtio_pci_save_config(void * opaque, QEMUFile *f)
 114 {
 115     VirtIOPCIProxy *proxy = opaque;
 116     pci_device_save(&proxy->pci_dev, f);
 117     msix_save(&proxy->pci_dev, f);
 118     if (msix_present(&proxy->pci_dev))
 119         qemu_put_be16(f, proxy->vdev->config_vector);
 120 }
 121
 122 static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f)
 123 {
 124     VirtIOPCIProxy *proxy = opaque;
 125     if (msix_present(&proxy->pci_dev))
 126         qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n));
 127 }
 128
 129 static int virtio_pci_load_config(void * opaque, QEMUFile *f)
 130 {
 131     VirtIOPCIProxy *proxy = opaque;
 132     int ret;
 133     ret = pci_device_load(&proxy->pci_dev, f);
 134     if (ret) {
 135         return ret;
 136     }
 137     msix_load(&proxy->pci_dev, f);
 138     if (msix_present(&proxy->pci_dev)) {
 139         qemu_get_be16s(f, &proxy->vdev->config_vector);
 140     } else {
 141         proxy->vdev->config_vector = VIRTIO_NO_VECTOR;
 142     }
 143     if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) {
 144         return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector);
 145     }
 146     return 0;
 147 }
 148
 149 static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f)
 150 {
 151     VirtIOPCIProxy *proxy = opaque;
 152     uint16_t vector;
 153     if (msix_present(&proxy->pci_dev)) {
 154         qemu_get_be16s(f, &vector);
 155     } else {
 156         vector = VIRTIO_NO_VECTOR;
 157     }
 158     virtio_queue_set_vector(proxy->vdev, n, vector);
 159     if (vector != VIRTIO_NO_VECTOR) {
 160         return msix_vector_use(&proxy->pci_dev, vector);
 161     }
 162     return 0;
 163 }
 164
 165 static void virtio_pci_reset(DeviceState *d)
 166 {
 167     VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev);
 168     virtio_reset(proxy->vdev);
 169     msix_reset(&proxy->pci_dev);
 170 }
 171
 172 static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
 173 {
 174     VirtIOPCIProxy *proxy = opaque;
 175     VirtIODevice *vdev = proxy->vdev;
 176     target_phys_addr_t pa;
 177
 178     switch (addr) {
 179     case VIRTIO_PCI_GUEST_FEATURES:
 180         /* Guest does not negotiate properly?  We have to assume nothing. */
 181         if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
 182             if (vdev->bad_features)
 183                 val = proxy->host_features & vdev->bad_features(vdev);
 184             else
 185                 val = 0;
 186         }
 187         if (vdev->set_features)
 188             vdev->set_features(vdev, val);
 189         vdev->guest_features = val;
 190         break;
 191     case VIRTIO_PCI_QUEUE_PFN:
 192         pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
 193         if (pa == 0) {
 194             virtio_reset(proxy->vdev);
 195             msix_unuse_all_vectors(&proxy->pci_dev);
 196         }
 197         else
 198             virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
 199         break;
 200     case VIRTIO_PCI_QUEUE_SEL:
 201         if (val < VIRTIO_PCI_QUEUE_MAX)
 202             vdev->queue_sel = val;
 203         break;
 204     case VIRTIO_PCI_QUEUE_NOTIFY:
 205         virtio_queue_notify(vdev, val);
 206         break;
 207     case VIRTIO_PCI_STATUS:
 208         vdev->status = val & 0xFF;
 209         if (vdev->status == 0) {
 210             virtio_reset(proxy->vdev);
 211             msix_unuse_all_vectors(&proxy->pci_dev);
 212         }
 213         break;
 214     case VIRTIO_MSI_CONFIG_VECTOR:
 215         msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
 216         /* Make it possible for guest to discover an error took place. */
 217         if (msix_vector_use(&proxy->pci_dev, val) < 0)
 218             val = VIRTIO_NO_VECTOR;
 219         vdev->config_vector = val;
 220         break;
 221     case VIRTIO_MSI_QUEUE_VECTOR:
 222         msix_vector_unuse(&proxy->pci_dev,
 223                           virtio_queue_vector(vdev, vdev->queue_sel));
 224         /* Make it possible for guest to discover an error took place. */
 225         if (msix_vector_use(&proxy->pci_dev, val) < 0)
 226             val = VIRTIO_NO_VECTOR;
 227         virtio_queue_set_vector(vdev, vdev->queue_sel, val);
 228         break;
 229     default:
 230         fprintf(stderr, "%s: unexpected address 0x%x value 0x%x\n",
 231                 __func__, addr, val);
 232         break;
 233     }
 234 }
 235
 236 static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
 237 {
 238     VirtIODevice *vdev = proxy->vdev;
 239     uint32_t ret = 0xFFFFFFFF;
 240
 241     switch (addr) {
 242     case VIRTIO_PCI_HOST_FEATURES:
 243         ret = proxy->host_features;
 244         break;
 245     case VIRTIO_PCI_GUEST_FEATURES:
 246         ret = vdev->guest_features;
 247         break;
 248     case VIRTIO_PCI_QUEUE_PFN:
 249         ret = virtio_queue_get_addr(vdev, vdev->queue_sel)
 250               >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
 251         break;
 252     case VIRTIO_PCI_QUEUE_NUM:
 253         ret = virtio_queue_get_num(vdev, vdev->queue_sel);
 254         break;
 255     case VIRTIO_PCI_QUEUE_SEL:
 256         ret = vdev->queue_sel;
 257         break;
 258     case VIRTIO_PCI_STATUS:
 259         ret = vdev->status;
 260         break;
 261     case VIRTIO_PCI_ISR:
 262         /* reading from the ISR also clears it. */
 263         ret = vdev->isr;
 264         vdev->isr = 0;
 265         qemu_set_irq(proxy->pci_dev.irq[0], 0);
 266         break;
 267     case VIRTIO_MSI_CONFIG_VECTOR:
 268         ret = vdev->config_vector;
 269         break;
 270     case VIRTIO_MSI_QUEUE_VECTOR:
 271         ret = virtio_queue_vector(vdev, vdev->queue_sel);
 272         break;
 273     default:
 274         break;
 275     }
 276
 277     return ret;
 278 }
 279
 280 static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr)
 281 {
 282     VirtIOPCIProxy *proxy = opaque;
 283     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 284     addr -= proxy->addr;
 285     if (addr < config)
 286         return virtio_ioport_read(proxy, addr);
 287     addr -= config;
 288     return virtio_config_readb(proxy->vdev, addr);
 289 }
 290
 291 static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr)
 292 {
 293     VirtIOPCIProxy *proxy = opaque;
 294     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 295     addr -= proxy->addr;
 296     if (addr < config)
 297         return virtio_ioport_read(proxy, addr);
 298     addr -= config;
 299     return virtio_config_readw(proxy->vdev, addr);
 300 }
 301
 302 static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr)
 303 {
 304     VirtIOPCIProxy *proxy = opaque;
 305     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 306     addr -= proxy->addr;
 307     if (addr < config)
 308         return virtio_ioport_read(proxy, addr);
 309     addr -= config;
 310     return virtio_config_readl(proxy->vdev, addr);
 311 }
 312
 313 static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val)
 314 {
 315     VirtIOPCIProxy *proxy = opaque;
 316     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 317     addr -= proxy->addr;
 318     if (addr < config) {
 319         virtio_ioport_write(proxy, addr, val);
 320         return;
 321     }
 322     addr -= config;
 323     virtio_config_writeb(proxy->vdev, addr, val);
 324 }
 325
 326 static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val)
 327 {
 328     VirtIOPCIProxy *proxy = opaque;
 329     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 330     addr -= proxy->addr;
 331     if (addr < config) {
 332         virtio_ioport_write(proxy, addr, val);
 333         return;
 334     }
 335     addr -= config;
 336     virtio_config_writew(proxy->vdev, addr, val);
 337 }
 338
 339 static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val)
 340 {
 341     VirtIOPCIProxy *proxy = opaque;
 342     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 343     addr -= proxy->addr;
 344     if (addr < config) {
 345         virtio_ioport_write(proxy, addr, val);
 346         return;
 347     }
 348     addr -= config;
 349     virtio_config_writel(proxy->vdev, addr, val);
 350 }
 351
 352 static void virtio_map(PCIDevice *pci_dev, int region_num,
 353                        pcibus_t addr, pcibus_t size, int type)
 354 {
 355     VirtIOPCIProxy *proxy = container_of(pci_dev, VirtIOPCIProxy, pci_dev);
 356     VirtIODevice *vdev = proxy->vdev;
 357     unsigned config_len = VIRTIO_PCI_REGION_SIZE(pci_dev) + vdev->config_len;
 358
 359     proxy->addr = addr;
 360
 361     register_ioport_write(addr, config_len, 1, virtio_pci_config_writeb, proxy);
 362     register_ioport_write(addr, config_len, 2, virtio_pci_config_writew, proxy);
 363     register_ioport_write(addr, config_len, 4, virtio_pci_config_writel, proxy);
 364     register_ioport_read(addr, config_len, 1, virtio_pci_config_readb, proxy);
 365     register_ioport_read(addr, config_len, 2, virtio_pci_config_readw, proxy);
 366     register_ioport_read(addr, config_len, 4, virtio_pci_config_readl, proxy);
 367
 368     if (vdev->config_len)
 369         vdev->get_config(vdev, vdev->config);
 370 }
 371
 372 static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
 373                                 uint32_t val, int len)
 374 {
 375     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 376
 377     if (PCI_COMMAND == address) {
 378         if (!(val & PCI_COMMAND_MASTER)) {
 379             proxy->vdev->status &= ~VIRTIO_CONFIG_S_DRIVER_OK;
 380         }
 381     }
 382
 383     pci_default_write_config(pci_dev, address, val, len);
 384     msix_write_config(pci_dev, address, val, len);
 385 }
 386
 387 static unsigned virtio_pci_get_features(void *opaque)
 388 {
 389     VirtIOPCIProxy *proxy = opaque;
 390     return proxy->host_features;
 391 }
 392
 393 static const VirtIOBindings virtio_pci_bindings = {
 394     .notify = virtio_pci_notify,
 395     .save_config = virtio_pci_save_config,
 396     .load_config = virtio_pci_load_config,
 397     .save_queue = virtio_pci_save_queue,
 398     .load_queue = virtio_pci_load_queue,
 399     .get_features = virtio_pci_get_features,
 400 };
 401
 402 static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
 403                             uint16_t vendor, uint16_t device,
 404                             uint16_t class_code, uint8_t pif)
 405 {
 406     uint8_t *config;
 407     uint32_t size;
 408
 409     proxy->vdev = vdev;
 410
 411     config = proxy->pci_dev.config;
 412     pci_config_set_vendor_id(config, vendor);
 413     pci_config_set_device_id(config, device);
 414
 415     config[0x08] = VIRTIO_PCI_ABI_VERSION;
 416
 417     config[0x09] = pif;
 418     pci_config_set_class(config, class_code);
 419     config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL;
 420
 421     config[0x2c] = vendor & 0xFF;
 422     config[0x2d] = (vendor >> 8) & 0xFF;
 423     config[0x2e] = vdev->device_id & 0xFF;
 424     config[0x2f] = (vdev->device_id >> 8) & 0xFF;
 425
 426     config[0x3d] = 1;
 427
 428     if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, 1, 0)) {
 429         pci_register_bar(&proxy->pci_dev, 1,
 430                          msix_bar_size(&proxy->pci_dev),
 431                          PCI_BASE_ADDRESS_SPACE_MEMORY,
 432                          msix_mmio_map);
 433     } else
 434         vdev->nvectors = 0;
 435
 436     proxy->pci_dev.config_write = virtio_write_config;
 437
 438     size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len;
 439     if (size & (size-1))
 440         size = 1 << qemu_fls(size);
 441
 442     pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO,
 443                            virtio_map);
 444
 445     virtio_bind_device(vdev, &virtio_pci_bindings, proxy);
 446     proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
 447     proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
 448     proxy->host_features = vdev->get_features(vdev, proxy->host_features);
 449 }
 450
 451 static int virtio_blk_init_pci(PCIDevice *pci_dev)
 452 {
 453     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 454     VirtIODevice *vdev;
 455
 456     if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
 457         proxy->class_code != PCI_CLASS_STORAGE_OTHER)
 458         proxy->class_code = PCI_CLASS_STORAGE_SCSI;
 459
 460     if (!proxy->dinfo) {
 461         qemu_error("virtio-blk-pci: drive property not set\n");
 462         return -1;
 463     }
 464     vdev = virtio_blk_init(&pci_dev->qdev, proxy->dinfo);
 465     vdev->nvectors = proxy->nvectors;
 466     virtio_init_pci(proxy, vdev,
 467                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 468                     PCI_DEVICE_ID_VIRTIO_BLOCK,
 469                     proxy->class_code, 0x00);
 470     /* make the actual value visible */
 471     proxy->nvectors = vdev->nvectors;
 472     return 0;
 473 }
 474
 475 static int virtio_exit_pci(PCIDevice *pci_dev)
 476 {
 477     return msix_uninit(pci_dev);
 478 }
 479
 480 static int virtio_blk_exit_pci(PCIDevice *pci_dev)
 481 {
 482     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 483
 484     drive_uninit(proxy->dinfo);
 485     return virtio_exit_pci(pci_dev);
 486 }
 487
 488 static int virtio_serial_init_pci(PCIDevice *pci_dev)
 489 {
 490     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 491     VirtIODevice *vdev;
 492
 493     if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
 494         proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
 495         proxy->class_code != PCI_CLASS_OTHERS)          /* qemu-kvm  */
 496         proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER;
 497
 498     vdev = virtio_serial_init(&pci_dev->qdev, proxy->max_virtserial_ports);
 499     if (!vdev) {
 500         return -1;
 501     }
 502     vdev->nvectors = proxy->nvectors ? proxy->nvectors
 503                                      : proxy->max_virtserial_ports + 1;
 504     virtio_init_pci(proxy, vdev,
 505                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 506                     PCI_DEVICE_ID_VIRTIO_CONSOLE,
 507                     proxy->class_code, 0x00);
 508     proxy->nvectors = vdev->nvectors;
 509     return 0;
 510 }
 511
 512 static int virtio_net_init_pci(PCIDevice *pci_dev)
 513 {
 514     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 515     VirtIODevice *vdev;
 516
 517     vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic);
 518
 519     vdev->nvectors = proxy->nvectors;
 520     virtio_init_pci(proxy, vdev,
 521                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 522                     PCI_DEVICE_ID_VIRTIO_NET,
 523                     PCI_CLASS_NETWORK_ETHERNET,
 524                     0x00);
 525
 526     /* make the actual value visible */
 527     proxy->nvectors = vdev->nvectors;
 528     return 0;
 529 }
 530
 531 static int virtio_net_exit_pci(PCIDevice *pci_dev)
 532 {
 533     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 534
 535     virtio_net_exit(proxy->vdev);
 536     return virtio_exit_pci(pci_dev);
 537 }
 538
 539 static int virtio_balloon_init_pci(PCIDevice *pci_dev)
 540 {
 541     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 542     VirtIODevice *vdev;
 543
 544     vdev = virtio_balloon_init(&pci_dev->qdev);
 545     virtio_init_pci(proxy, vdev,
 546                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 547                     PCI_DEVICE_ID_VIRTIO_BALLOON,
 548                     PCI_CLASS_MEMORY_RAM,
 549                     0x00);
 550     return 0;
 551 }
 552
 553 static PCIDeviceInfo virtio_info[] = {
 554     {
 555         .qdev.name = "virtio-blk-pci",
 556         .qdev.size = sizeof(VirtIOPCIProxy),
 557         .init      = virtio_blk_init_pci,
 558         .exit      = virtio_blk_exit_pci,
 559         .qdev.props = (Property[]) {
 560             DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
 561             DEFINE_PROP_DRIVE("drive", VirtIOPCIProxy, dinfo),
 562             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
 563             DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
 564             DEFINE_PROP_END_OF_LIST(),
 565         },
 566         .qdev.reset = virtio_pci_reset,
 567     },{
 568         .qdev.name  = "virtio-net-pci",
 569         .qdev.size  = sizeof(VirtIOPCIProxy),
 570         .init       = virtio_net_init_pci,
 571         .exit       = virtio_net_exit_pci,
 572         .romfile    = "pxe-virtio.bin",
 573         .qdev.props = (Property[]) {
 574             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
 575             DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features),
 576             DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic),
 577             DEFINE_PROP_END_OF_LIST(),
 578         },
 579         .qdev.reset = virtio_pci_reset,
 580     },{
 581         .qdev.name = "virtio-serial-pci",
 582         .qdev.alias = "virtio-serial",
 583         .qdev.size = sizeof(VirtIOPCIProxy),
 584         .init      = virtio_serial_init_pci,
 585         .exit      = virtio_exit_pci,
 586         .qdev.props = (Property[]) {
 587             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 0),
 588             DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
 589             DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
 590             DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, max_virtserial_ports,
 591                                31),
 592             DEFINE_PROP_END_OF_LIST(),
 593         },
 594         .qdev.reset = virtio_pci_reset,
 595     },{
 596         .qdev.name = "virtio-balloon-pci",
 597         .qdev.size = sizeof(VirtIOPCIProxy),
 598         .init      = virtio_balloon_init_pci,
 599         .exit      = virtio_exit_pci,
 600         .qdev.props = (Property[]) {
 601             DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
 602             DEFINE_PROP_END_OF_LIST(),
 603         },
 604         .qdev.reset = virtio_pci_reset,
 605     },{
 606         /* end of list */
 607     }
 608 };
 609
 610 static void virtio_pci_register_devices(void)
 611 {
 612     pci_qdev_register_many(virtio_info);
 613 }
 614
 615 device_init(virtio_pci_register_devices)