Revision 6d74ca5a
| b/hw/syborg_virtio.c | ||
|---|---|---|
| 87 | 87 |
break; |
| 88 | 88 |
case SYBORG_VIRTIO_HOST_FEATURES: |
| 89 | 89 |
ret = vdev->get_features(vdev); |
| 90 |
ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY);
|
|
| 90 |
ret |= vdev->binding->get_features(s);
|
|
| 91 | 91 |
break; |
| 92 | 92 |
case SYBORG_VIRTIO_GUEST_FEATURES: |
| 93 | 93 |
ret = vdev->features; |
| ... | ... | |
| 242 | 242 |
qemu_set_irq(proxy->irq, level != 0); |
| 243 | 243 |
} |
| 244 | 244 |
|
| 245 |
static unsigned syborg_virtio_get_features(void *opaque) |
|
| 246 |
{
|
|
| 247 |
unsigned ret = 0; |
|
| 248 |
ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY); |
|
| 249 |
return ret; |
|
| 250 |
} |
|
| 251 |
|
|
| 245 | 252 |
static VirtIOBindings syborg_virtio_bindings = {
|
| 246 |
.notify = syborg_virtio_update_irq |
|
| 253 |
.notify = syborg_virtio_update_irq, |
|
| 254 |
.get_features = syborg_virtio_get_features, |
|
| 247 | 255 |
}; |
| 248 | 256 |
|
| 249 | 257 |
static int syborg_virtio_init(SyborgVirtIOProxy *proxy, VirtIODevice *vdev) |
| b/hw/virtio-pci.c | ||
|---|---|---|
| 236 | 236 |
switch (addr) {
|
| 237 | 237 |
case VIRTIO_PCI_HOST_FEATURES: |
| 238 | 238 |
ret = vdev->get_features(vdev); |
| 239 |
ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY); |
|
| 240 |
ret |= (1 << VIRTIO_RING_F_INDIRECT_DESC); |
|
| 241 |
ret |= (1 << VIRTIO_F_BAD_FEATURE); |
|
| 239 |
ret |= vdev->binding->get_features(proxy); |
|
| 242 | 240 |
break; |
| 243 | 241 |
case VIRTIO_PCI_GUEST_FEATURES: |
| 244 | 242 |
ret = vdev->features; |
| ... | ... | |
| 382 | 380 |
msix_write_config(pci_dev, address, val, len); |
| 383 | 381 |
} |
| 384 | 382 |
|
| 383 |
static unsigned virtio_pci_get_features(void *opaque) |
|
| 384 |
{
|
|
| 385 |
unsigned ret = 0; |
|
| 386 |
ret |= (1 << VIRTIO_F_NOTIFY_ON_EMPTY); |
|
| 387 |
ret |= (1 << VIRTIO_RING_F_INDIRECT_DESC); |
|
| 388 |
ret |= (1 << VIRTIO_F_BAD_FEATURE); |
|
| 389 |
return ret; |
|
| 390 |
} |
|
| 391 |
|
|
| 385 | 392 |
static const VirtIOBindings virtio_pci_bindings = {
|
| 386 | 393 |
.notify = virtio_pci_notify, |
| 387 | 394 |
.save_config = virtio_pci_save_config, |
| 388 | 395 |
.load_config = virtio_pci_load_config, |
| 389 | 396 |
.save_queue = virtio_pci_save_queue, |
| 390 | 397 |
.load_queue = virtio_pci_load_queue, |
| 398 |
.get_features = virtio_pci_get_features, |
|
| 391 | 399 |
}; |
| 392 | 400 |
|
| 393 | 401 |
static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev, |
| b/hw/virtio.c | ||
|---|---|---|
| 651 | 651 |
int virtio_load(VirtIODevice *vdev, QEMUFile *f) |
| 652 | 652 |
{
|
| 653 | 653 |
int num, i, ret; |
| 654 |
uint32_t features; |
|
| 655 |
uint32_t supported_features = vdev->get_features(vdev) | |
|
| 656 |
vdev->binding->get_features(vdev->binding_opaque); |
|
| 654 | 657 |
|
| 655 | 658 |
if (vdev->binding->load_config) {
|
| 656 | 659 |
ret = vdev->binding->load_config(vdev->binding_opaque, f); |
| ... | ... | |
| 661 | 664 |
qemu_get_8s(f, &vdev->status); |
| 662 | 665 |
qemu_get_8s(f, &vdev->isr); |
| 663 | 666 |
qemu_get_be16s(f, &vdev->queue_sel); |
| 664 |
qemu_get_be32s(f, &vdev->features); |
|
| 667 |
qemu_get_be32s(f, &features); |
|
| 668 |
if (features & ~supported_features) {
|
|
| 669 |
fprintf(stderr, "Features 0x%x unsupported. Allowed features: 0x%x\n", |
|
| 670 |
features, supported_features); |
|
| 671 |
return -1; |
|
| 672 |
} |
|
| 673 |
vdev->features = features; |
|
| 665 | 674 |
vdev->config_len = qemu_get_be32(f); |
| 666 | 675 |
qemu_get_buffer(f, vdev->config, vdev->config_len); |
| 667 | 676 |
|
| b/hw/virtio.h | ||
|---|---|---|
| 31 | 31 |
/* We've given up on this device. */ |
| 32 | 32 |
#define VIRTIO_CONFIG_S_FAILED 0x80 |
| 33 | 33 |
|
| 34 |
/* Some virtio feature bits (currently bits 28 through 31) are reserved for the |
|
| 35 |
* transport being used (eg. virtio_ring), the rest are per-device feature bits. */ |
|
| 36 |
#define VIRTIO_TRANSPORT_F_START 28 |
|
| 37 |
#define VIRTIO_TRANSPORT_F_END 32 |
|
| 38 |
|
|
| 34 | 39 |
/* We notify when the ring is completely used, even if the guest is suppressing |
| 35 | 40 |
* callbacks */ |
| 36 | 41 |
#define VIRTIO_F_NOTIFY_ON_EMPTY 24 |
| ... | ... | |
| 82 | 87 |
void (*save_queue)(void * opaque, int n, QEMUFile *f); |
| 83 | 88 |
int (*load_config)(void * opaque, QEMUFile *f); |
| 84 | 89 |
int (*load_queue)(void * opaque, int n, QEMUFile *f); |
| 90 |
unsigned (*get_features)(void * opaque); |
|
| 85 | 91 |
} VirtIOBindings; |
| 86 | 92 |
|
| 87 | 93 |
#define VIRTIO_PCI_QUEUE_MAX 16 |
Also available in: Unified diff