Revision ade80dc8
| b/hw/virtio-pci.c | ||
|---|---|---|
| 24 | 24 |
#include "net.h" |
| 25 | 25 |
#include "block_int.h" |
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#include "loader.h" |
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#include "kvm.h" |
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|
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/* from Linux's linux/virtio_pci.h */ |
| 29 | 30 |
|
| ... | ... | |
| 415 | 416 |
return proxy->host_features; |
| 416 | 417 |
} |
| 417 | 418 |
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static void virtio_pci_guest_notifier_read(void *opaque) |
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{
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VirtQueue *vq = opaque; |
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EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
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if (event_notifier_test_and_clear(n)) {
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virtio_irq(vq); |
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} |
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} |
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|
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static int virtio_pci_set_guest_notifier(void *opaque, int n, bool assign) |
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{
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VirtIOPCIProxy *proxy = opaque; |
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VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
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EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); |
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if (assign) {
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int r = event_notifier_init(notifier, 0); |
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if (r < 0) {
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return r; |
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} |
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qemu_set_fd_handler(event_notifier_get_fd(notifier), |
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virtio_pci_guest_notifier_read, NULL, vq); |
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} else {
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qemu_set_fd_handler(event_notifier_get_fd(notifier), |
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NULL, NULL, NULL); |
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event_notifier_cleanup(notifier); |
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} |
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return 0; |
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} |
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|
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static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) |
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{
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VirtIOPCIProxy *proxy = opaque; |
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VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
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EventNotifier *notifier = virtio_queue_get_host_notifier(vq); |
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int r; |
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if (assign) {
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r = event_notifier_init(notifier, 1); |
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if (r < 0) {
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return r; |
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} |
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r = kvm_set_ioeventfd_pio_word(event_notifier_get_fd(notifier), |
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proxy->addr + VIRTIO_PCI_QUEUE_NOTIFY, |
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n, assign); |
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if (r < 0) {
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event_notifier_cleanup(notifier); |
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} |
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} else {
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r = kvm_set_ioeventfd_pio_word(event_notifier_get_fd(notifier), |
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proxy->addr + VIRTIO_PCI_QUEUE_NOTIFY, |
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n, assign); |
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if (r < 0) {
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return r; |
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} |
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event_notifier_cleanup(notifier); |
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} |
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return r; |
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} |
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|
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static const VirtIOBindings virtio_pci_bindings = {
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.notify = virtio_pci_notify, |
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.save_config = virtio_pci_save_config, |
| ... | ... | |
| 422 | 483 |
.save_queue = virtio_pci_save_queue, |
| 423 | 484 |
.load_queue = virtio_pci_load_queue, |
| 424 | 485 |
.get_features = virtio_pci_get_features, |
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.set_host_notifier = virtio_pci_set_host_notifier, |
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.set_guest_notifier = virtio_pci_set_guest_notifier, |
|
| 425 | 488 |
}; |
| 426 | 489 |
|
| 427 | 490 |
static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev, |
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