Revision ade80dc8 hw/virtio-pci.c
b/hw/virtio-pci.c | ||
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#include "net.h" |
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#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 */ |
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|
... | ... | |
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return proxy->host_features; |
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} |
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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, |
... | ... | |
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.save_queue = virtio_pci_save_queue, |
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.load_queue = virtio_pci_load_queue, |
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.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, |
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}; |
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static void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev, |
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