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 "qemu-error.h"
  23 #include "msix.h"
  24 #include "net.h"
  25 #include "block_int.h"
  26 #include "loader.h"
  27
  28 /* from Linux's linux/virtio_pci.h */
  29
  30 /* A 32-bit r/o bitmask of the features supported by the host */
  31 #define VIRTIO_PCI_HOST_FEATURES        0
  32
  33 /* A 32-bit r/w bitmask of features activated by the guest */
  34 #define VIRTIO_PCI_GUEST_FEATURES       4
  35
  36 /* A 32-bit r/w PFN for the currently selected queue */
  37 #define VIRTIO_PCI_QUEUE_PFN            8
  38
  39 /* A 16-bit r/o queue size for the currently selected queue */
  40 #define VIRTIO_PCI_QUEUE_NUM            12
  41
  42 /* A 16-bit r/w queue selector */
  43 #define VIRTIO_PCI_QUEUE_SEL            14
  44
  45 /* A 16-bit r/w queue notifier */
  46 #define VIRTIO_PCI_QUEUE_NOTIFY         16
  47
  48 /* An 8-bit device status register.  */
  49 #define VIRTIO_PCI_STATUS               18
  50
  51 /* An 8-bit r/o interrupt status register.  Reading the value will return the
  52  * current contents of the ISR and will also clear it.  This is effectively
  53  * a read-and-acknowledge. */
  54 #define VIRTIO_PCI_ISR                  19
  55
  56 /* MSI-X registers: only enabled if MSI-X is enabled. */
  57 /* A 16-bit vector for configuration changes. */
  58 #define VIRTIO_MSI_CONFIG_VECTOR        20
  59 /* A 16-bit vector for selected queue notifications. */
  60 #define VIRTIO_MSI_QUEUE_VECTOR         22
  61
  62 /* Config space size */
  63 #define VIRTIO_PCI_CONFIG_NOMSI         20
  64 #define VIRTIO_PCI_CONFIG_MSI           24
  65 #define VIRTIO_PCI_REGION_SIZE(dev)     (msix_present(dev) ? \
  66                                          VIRTIO_PCI_CONFIG_MSI : \
  67                                          VIRTIO_PCI_CONFIG_NOMSI)
  68
  69 /* The remaining space is defined by each driver as the per-driver
  70  * configuration space */
  71 #define VIRTIO_PCI_CONFIG(dev)          (msix_enabled(dev) ? \
  72                                          VIRTIO_PCI_CONFIG_MSI : \
  73                                          VIRTIO_PCI_CONFIG_NOMSI)
  74
  75 /* Virtio ABI version, if we increment this, we break the guest driver. */
  76 #define VIRTIO_PCI_ABI_VERSION          0
  77
  78 /* How many bits to shift physical queue address written to QUEUE_PFN.
  79  * 12 is historical, and due to x86 page size. */
  80 #define VIRTIO_PCI_QUEUE_ADDR_SHIFT    12
  81
  82 /* We can catch some guest bugs inside here so we continue supporting older
  83    guests. */
  84 #define VIRTIO_PCI_BUG_BUS_MASTER       (1 << 0)
  85
  86 /* QEMU doesn't strictly need write barriers since everything runs in
  87  * lock-step.  We'll leave the calls to wmb() in though to make it obvious for
  88  * KVM or if kqemu gets SMP support.
  89  */
  90 #define wmb() do { } while (0)
  91
  92 /* PCI bindings.  */
  93
  94 typedef struct {
  95     PCIDevice pci_dev;
  96     VirtIODevice *vdev;
  97     uint32_t bugs;
  98     uint32_t addr;
  99     uint32_t class_code;
 100     uint32_t nvectors;
 101     BlockConf block;
 102     NICConf nic;
 103     uint32_t host_features;
 104     /* Max. number of ports we can have for a the virtio-serial device */
 105     uint32_t max_virtserial_ports;
 106 } VirtIOPCIProxy;
 107
 108 /* virtio device */
 109
 110 static void virtio_pci_notify(void *opaque, uint16_t vector)
 111 {
 112     VirtIOPCIProxy *proxy = opaque;
 113     if (msix_enabled(&proxy->pci_dev))
 114         msix_notify(&proxy->pci_dev, vector);
 115     else
 116         qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1);
 117 }
 118
 119 static void virtio_pci_save_config(void * opaque, QEMUFile *f)
 120 {
 121     VirtIOPCIProxy *proxy = opaque;
 122     pci_device_save(&proxy->pci_dev, f);
 123     msix_save(&proxy->pci_dev, f);
 124     if (msix_present(&proxy->pci_dev))
 125         qemu_put_be16(f, proxy->vdev->config_vector);
 126 }
 127
 128 static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f)
 129 {
 130     VirtIOPCIProxy *proxy = opaque;
 131     if (msix_present(&proxy->pci_dev))
 132         qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n));
 133 }
 134
 135 static int virtio_pci_load_config(void * opaque, QEMUFile *f)
 136 {
 137     VirtIOPCIProxy *proxy = opaque;
 138     int ret;
 139     ret = pci_device_load(&proxy->pci_dev, f);
 140     if (ret) {
 141         return ret;
 142     }
 143     msix_load(&proxy->pci_dev, f);
 144     if (msix_present(&proxy->pci_dev)) {
 145         qemu_get_be16s(f, &proxy->vdev->config_vector);
 146     } else {
 147         proxy->vdev->config_vector = VIRTIO_NO_VECTOR;
 148     }
 149     if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) {
 150         return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector);
 151     }
 152
 153     /* Try to find out if the guest has bus master disabled, but is
 154        in ready state. Then we have a buggy guest OS. */
 155     if (!(proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) &&
 156         !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
 157         proxy->bugs |= VIRTIO_PCI_BUG_BUS_MASTER;
 158     }
 159     return 0;
 160 }
 161
 162 static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f)
 163 {
 164     VirtIOPCIProxy *proxy = opaque;
 165     uint16_t vector;
 166     if (msix_present(&proxy->pci_dev)) {
 167         qemu_get_be16s(f, &vector);
 168     } else {
 169         vector = VIRTIO_NO_VECTOR;
 170     }
 171     virtio_queue_set_vector(proxy->vdev, n, vector);
 172     if (vector != VIRTIO_NO_VECTOR) {
 173         return msix_vector_use(&proxy->pci_dev, vector);
 174     }
 175     return 0;
 176 }
 177
 178 static void virtio_pci_reset(DeviceState *d)
 179 {
 180     VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev);
 181     virtio_reset(proxy->vdev);
 182     msix_reset(&proxy->pci_dev);
 183     proxy->bugs = 0;
 184 }
 185
 186 static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
 187 {
 188     VirtIOPCIProxy *proxy = opaque;
 189     VirtIODevice *vdev = proxy->vdev;
 190     target_phys_addr_t pa;
 191
 192     switch (addr) {
 193     case VIRTIO_PCI_GUEST_FEATURES:
 194         /* Guest does not negotiate properly?  We have to assume nothing. */
 195         if (val & (1 << VIRTIO_F_BAD_FEATURE)) {
 196             if (vdev->bad_features)
 197                 val = proxy->host_features & vdev->bad_features(vdev);
 198             else
 199                 val = 0;
 200         }
 201         if (vdev->set_features)
 202             vdev->set_features(vdev, val);
 203         vdev->guest_features = val;
 204         break;
 205     case VIRTIO_PCI_QUEUE_PFN:
 206         pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT;
 207         if (pa == 0) {
 208             virtio_reset(proxy->vdev);
 209             msix_unuse_all_vectors(&proxy->pci_dev);
 210         }
 211         else
 212             virtio_queue_set_addr(vdev, vdev->queue_sel, pa);
 213         break;
 214     case VIRTIO_PCI_QUEUE_SEL:
 215         if (val < VIRTIO_PCI_QUEUE_MAX)
 216             vdev->queue_sel = val;
 217         break;
 218     case VIRTIO_PCI_QUEUE_NOTIFY:
 219         virtio_queue_notify(vdev, val);
 220         break;
 221     case VIRTIO_PCI_STATUS:
 222         vdev->status = val & 0xFF;
 223         if (vdev->status == 0) {
 224             virtio_reset(proxy->vdev);
 225             msix_unuse_all_vectors(&proxy->pci_dev);
 226         }
 227
 228         /* Linux before 2.6.34 sets the device as OK without enabling
 229            the PCI device bus master bit. In this case we need to disable
 230            some safety checks. */
 231         if ((val & VIRTIO_CONFIG_S_DRIVER_OK) &&
 232             !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
 233             proxy->bugs |= VIRTIO_PCI_BUG_BUS_MASTER;
 234         }
 235         break;
 236     case VIRTIO_MSI_CONFIG_VECTOR:
 237         msix_vector_unuse(&proxy->pci_dev, vdev->config_vector);
 238         /* Make it possible for guest to discover an error took place. */
 239         if (msix_vector_use(&proxy->pci_dev, val) < 0)
 240             val = VIRTIO_NO_VECTOR;
 241         vdev->config_vector = val;
 242         break;
 243     case VIRTIO_MSI_QUEUE_VECTOR:
 244         msix_vector_unuse(&proxy->pci_dev,
 245                           virtio_queue_vector(vdev, vdev->queue_sel));
 246         /* Make it possible for guest to discover an error took place. */
 247         if (msix_vector_use(&proxy->pci_dev, val) < 0)
 248             val = VIRTIO_NO_VECTOR;
 249         virtio_queue_set_vector(vdev, vdev->queue_sel, val);
 250         break;
 251     default:
 252         fprintf(stderr, "%s: unexpected address 0x%x value 0x%x\n",
 253                 __func__, addr, val);
 254         break;
 255     }
 256 }
 257
 258 static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
 259 {
 260     VirtIODevice *vdev = proxy->vdev;
 261     uint32_t ret = 0xFFFFFFFF;
 262
 263     switch (addr) {
 264     case VIRTIO_PCI_HOST_FEATURES:
 265         ret = proxy->host_features;
 266         break;
 267     case VIRTIO_PCI_GUEST_FEATURES:
 268         ret = vdev->guest_features;
 269         break;
 270     case VIRTIO_PCI_QUEUE_PFN:
 271         ret = virtio_queue_get_addr(vdev, vdev->queue_sel)
 272               >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
 273         break;
 274     case VIRTIO_PCI_QUEUE_NUM:
 275         ret = virtio_queue_get_num(vdev, vdev->queue_sel);
 276         break;
 277     case VIRTIO_PCI_QUEUE_SEL:
 278         ret = vdev->queue_sel;
 279         break;
 280     case VIRTIO_PCI_STATUS:
 281         ret = vdev->status;
 282         break;
 283     case VIRTIO_PCI_ISR:
 284         /* reading from the ISR also clears it. */
 285         ret = vdev->isr;
 286         vdev->isr = 0;
 287         qemu_set_irq(proxy->pci_dev.irq[0], 0);
 288         break;
 289     case VIRTIO_MSI_CONFIG_VECTOR:
 290         ret = vdev->config_vector;
 291         break;
 292     case VIRTIO_MSI_QUEUE_VECTOR:
 293         ret = virtio_queue_vector(vdev, vdev->queue_sel);
 294         break;
 295     default:
 296         break;
 297     }
 298
 299     return ret;
 300 }
 301
 302 static uint32_t virtio_pci_config_readb(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_readb(proxy->vdev, addr);
 311 }
 312
 313 static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr)
 314 {
 315     VirtIOPCIProxy *proxy = opaque;
 316     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 317     addr -= proxy->addr;
 318     if (addr < config)
 319         return virtio_ioport_read(proxy, addr);
 320     addr -= config;
 321     return virtio_config_readw(proxy->vdev, addr);
 322 }
 323
 324 static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr)
 325 {
 326     VirtIOPCIProxy *proxy = opaque;
 327     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 328     addr -= proxy->addr;
 329     if (addr < config)
 330         return virtio_ioport_read(proxy, addr);
 331     addr -= config;
 332     return virtio_config_readl(proxy->vdev, addr);
 333 }
 334
 335 static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val)
 336 {
 337     VirtIOPCIProxy *proxy = opaque;
 338     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 339     addr -= proxy->addr;
 340     if (addr < config) {
 341         virtio_ioport_write(proxy, addr, val);
 342         return;
 343     }
 344     addr -= config;
 345     virtio_config_writeb(proxy->vdev, addr, val);
 346 }
 347
 348 static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val)
 349 {
 350     VirtIOPCIProxy *proxy = opaque;
 351     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 352     addr -= proxy->addr;
 353     if (addr < config) {
 354         virtio_ioport_write(proxy, addr, val);
 355         return;
 356     }
 357     addr -= config;
 358     virtio_config_writew(proxy->vdev, addr, val);
 359 }
 360
 361 static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val)
 362 {
 363     VirtIOPCIProxy *proxy = opaque;
 364     uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev);
 365     addr -= proxy->addr;
 366     if (addr < config) {
 367         virtio_ioport_write(proxy, addr, val);
 368         return;
 369     }
 370     addr -= config;
 371     virtio_config_writel(proxy->vdev, addr, val);
 372 }
 373
 374 static void virtio_map(PCIDevice *pci_dev, int region_num,
 375                        pcibus_t addr, pcibus_t size, int type)
 376 {
 377     VirtIOPCIProxy *proxy = container_of(pci_dev, VirtIOPCIProxy, pci_dev);
 378     VirtIODevice *vdev = proxy->vdev;
 379     unsigned config_len = VIRTIO_PCI_REGION_SIZE(pci_dev) + vdev->config_len;
 380
 381     proxy->addr = addr;
 382
 383     register_ioport_write(addr, config_len, 1, virtio_pci_config_writeb, proxy);
 384     register_ioport_write(addr, config_len, 2, virtio_pci_config_writew, proxy);
 385     register_ioport_write(addr, config_len, 4, virtio_pci_config_writel, proxy);
 386     register_ioport_read(addr, config_len, 1, virtio_pci_config_readb, proxy);
 387     register_ioport_read(addr, config_len, 2, virtio_pci_config_readw, proxy);
 388     register_ioport_read(addr, config_len, 4, virtio_pci_config_readl, proxy);
 389
 390     if (vdev->config_len)
 391         vdev->get_config(vdev, vdev->config);
 392 }
 393
 394 static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
 395                                 uint32_t val, int len)
 396 {
 397     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 398
 399     if (PCI_COMMAND == address) {
 400         if (!(val & PCI_COMMAND_MASTER)) {
 401             if (!(proxy->bugs & VIRTIO_PCI_BUG_BUS_MASTER)) {
 402                 proxy->vdev->status &= ~VIRTIO_CONFIG_S_DRIVER_OK;
 403             }
 404         }
 405     }
 406
 407     pci_default_write_config(pci_dev, address, val, len);
 408     msix_write_config(pci_dev, address, val, len);
 409 }
 410
 411 static unsigned virtio_pci_get_features(void *opaque)
 412 {
 413     VirtIOPCIProxy *proxy = opaque;
 414     return proxy->host_features;
 415 }
 416
 417 static const VirtIOBindings virtio_pci_bindings = {
 418     .notify = virtio_pci_notify,
 419     .save_config = virtio_pci_save_config,
 420     .load_config = virtio_pci_load_config,
 421     .save_queue = virtio_pci_save_queue,
 422     .load_queue = virtio_pci_load_queue,
 423     .get_features = virtio_pci_get_features,
 424 };
 425
 426 static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev,
 427                             uint16_t vendor, uint16_t device,
 428                             uint16_t class_code, uint8_t pif)
 429 {
 430     uint8_t *config;
 431     uint32_t size;
 432
 433     proxy->vdev = vdev;
 434
 435     config = proxy->pci_dev.config;
 436     pci_config_set_vendor_id(config, vendor);
 437     pci_config_set_device_id(config, device);
 438
 439     config[0x08] = VIRTIO_PCI_ABI_VERSION;
 440
 441     config[0x09] = pif;
 442     pci_config_set_class(config, class_code);
 443     config[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL;
 444
 445     config[0x2c] = vendor & 0xFF;
 446     config[0x2d] = (vendor >> 8) & 0xFF;
 447     config[0x2e] = vdev->device_id & 0xFF;
 448     config[0x2f] = (vdev->device_id >> 8) & 0xFF;
 449
 450     config[0x3d] = 1;
 451
 452     if (vdev->nvectors && !msix_init(&proxy->pci_dev, vdev->nvectors, 1, 0)) {
 453         pci_register_bar(&proxy->pci_dev, 1,
 454                          msix_bar_size(&proxy->pci_dev),
 455                          PCI_BASE_ADDRESS_SPACE_MEMORY,
 456                          msix_mmio_map);
 457     } else
 458         vdev->nvectors = 0;
 459
 460     proxy->pci_dev.config_write = virtio_write_config;
 461
 462     size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len;
 463     if (size & (size-1))
 464         size = 1 << qemu_fls(size);
 465
 466     pci_register_bar(&proxy->pci_dev, 0, size, PCI_BASE_ADDRESS_SPACE_IO,
 467                            virtio_map);
 468
 469     virtio_bind_device(vdev, &virtio_pci_bindings, proxy);
 470     proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
 471     proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
 472     proxy->host_features = vdev->get_features(vdev, proxy->host_features);
 473 }
 474
 475 static int virtio_blk_init_pci(PCIDevice *pci_dev)
 476 {
 477     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 478     VirtIODevice *vdev;
 479
 480     if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
 481         proxy->class_code != PCI_CLASS_STORAGE_OTHER)
 482         proxy->class_code = PCI_CLASS_STORAGE_SCSI;
 483
 484     if (!proxy->block.dinfo) {
 485         error_report("virtio-blk-pci: drive property not set");
 486         return -1;
 487     }
 488     vdev = virtio_blk_init(&pci_dev->qdev, &proxy->block);
 489     vdev->nvectors = proxy->nvectors;
 490     virtio_init_pci(proxy, vdev,
 491                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 492                     PCI_DEVICE_ID_VIRTIO_BLOCK,
 493                     proxy->class_code, 0x00);
 494     /* make the actual value visible */
 495     proxy->nvectors = vdev->nvectors;
 496     return 0;
 497 }
 498
 499 static int virtio_exit_pci(PCIDevice *pci_dev)
 500 {
 501     return msix_uninit(pci_dev);
 502 }
 503
 504 static int virtio_blk_exit_pci(PCIDevice *pci_dev)
 505 {
 506     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 507
 508     drive_uninit(proxy->block.dinfo);
 509     return virtio_exit_pci(pci_dev);
 510 }
 511
 512 static int virtio_serial_init_pci(PCIDevice *pci_dev)
 513 {
 514     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 515     VirtIODevice *vdev;
 516
 517     if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
 518         proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
 519         proxy->class_code != PCI_CLASS_OTHERS)          /* qemu-kvm  */
 520         proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER;
 521
 522     vdev = virtio_serial_init(&pci_dev->qdev, proxy->max_virtserial_ports);
 523     if (!vdev) {
 524         return -1;
 525     }
 526     vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED
 527                                         ? proxy->max_virtserial_ports + 1
 528                                         : proxy->nvectors;
 529     virtio_init_pci(proxy, vdev,
 530                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 531                     PCI_DEVICE_ID_VIRTIO_CONSOLE,
 532                     proxy->class_code, 0x00);
 533     proxy->nvectors = vdev->nvectors;
 534     return 0;
 535 }
 536
 537 static int virtio_net_init_pci(PCIDevice *pci_dev)
 538 {
 539     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 540     VirtIODevice *vdev;
 541
 542     vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic);
 543
 544     vdev->nvectors = proxy->nvectors;
 545     virtio_init_pci(proxy, vdev,
 546                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 547                     PCI_DEVICE_ID_VIRTIO_NET,
 548                     PCI_CLASS_NETWORK_ETHERNET,
 549                     0x00);
 550
 551     /* make the actual value visible */
 552     proxy->nvectors = vdev->nvectors;
 553     return 0;
 554 }
 555
 556 static int virtio_net_exit_pci(PCIDevice *pci_dev)
 557 {
 558     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 559
 560     virtio_net_exit(proxy->vdev);
 561     return virtio_exit_pci(pci_dev);
 562 }
 563
 564 static int virtio_balloon_init_pci(PCIDevice *pci_dev)
 565 {
 566     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 567     VirtIODevice *vdev;
 568
 569     vdev = virtio_balloon_init(&pci_dev->qdev);
 570     virtio_init_pci(proxy, vdev,
 571                     PCI_VENDOR_ID_REDHAT_QUMRANET,
 572                     PCI_DEVICE_ID_VIRTIO_BALLOON,
 573                     PCI_CLASS_MEMORY_RAM,
 574                     0x00);
 575     return 0;
 576 }
 577
 578 static PCIDeviceInfo virtio_info[] = {
 579     {
 580         .qdev.name = "virtio-blk-pci",
 581         .qdev.size = sizeof(VirtIOPCIProxy),
 582         .init      = virtio_blk_init_pci,
 583         .exit      = virtio_blk_exit_pci,
 584         .qdev.props = (Property[]) {
 585             DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
 586             DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, block),
 587             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
 588             DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
 589             DEFINE_PROP_END_OF_LIST(),
 590         },
 591         .qdev.reset = virtio_pci_reset,
 592     },{
 593         .qdev.name  = "virtio-net-pci",
 594         .qdev.size  = sizeof(VirtIOPCIProxy),
 595         .init       = virtio_net_init_pci,
 596         .exit       = virtio_net_exit_pci,
 597         .romfile    = "pxe-virtio.bin",
 598         .qdev.props = (Property[]) {
 599             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
 600             DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features),
 601             DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic),
 602             DEFINE_PROP_END_OF_LIST(),
 603         },
 604         .qdev.reset = virtio_pci_reset,
 605     },{
 606         .qdev.name = "virtio-serial-pci",
 607         .qdev.alias = "virtio-serial",
 608         .qdev.size = sizeof(VirtIOPCIProxy),
 609         .init      = virtio_serial_init_pci,
 610         .exit      = virtio_exit_pci,
 611         .qdev.props = (Property[]) {
 612             DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
 613                                DEV_NVECTORS_UNSPECIFIED),
 614             DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
 615             DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
 616             DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, max_virtserial_ports,
 617                                31),
 618             DEFINE_PROP_END_OF_LIST(),
 619         },
 620         .qdev.reset = virtio_pci_reset,
 621     },{
 622         .qdev.name = "virtio-balloon-pci",
 623         .qdev.size = sizeof(VirtIOPCIProxy),
 624         .init      = virtio_balloon_init_pci,
 625         .exit      = virtio_exit_pci,
 626         .qdev.props = (Property[]) {
 627             DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
 628             DEFINE_PROP_END_OF_LIST(),
 629         },
 630         .qdev.reset = virtio_pci_reset,
 631     },{
 632         /* end of list */
 633     }
 634 };
 635
 636 static void virtio_pci_register_devices(void)
 637 {
 638     pci_qdev_register_many(virtio_info);
 639 }
 640
 641 device_init(virtio_pci_register_devices)