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/*
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* Virtio PCI Bindings
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*
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* Copyright IBM, Corp. 2007
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* Copyright (c) 2009 CodeSourcery
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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* Paul Brook <paul@codesourcery.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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* Contributions after 2012-01-13 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include <inttypes.h> |
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#include "virtio.h" |
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#include "virtio-blk.h" |
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#include "virtio-net.h" |
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#include "virtio-serial.h" |
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#include "virtio-scsi.h" |
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#include "pci.h" |
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#include "qemu-error.h" |
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#include "msi.h" |
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#include "msix.h" |
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#include "net.h" |
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#include "loader.h" |
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#include "kvm.h" |
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#include "blockdev.h" |
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#include "virtio-pci.h" |
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#include "range.h" |
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/* from Linux's linux/virtio_pci.h */
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/* A 32-bit r/o bitmask of the features supported by the host */
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#define VIRTIO_PCI_HOST_FEATURES 0 |
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/* A 32-bit r/w bitmask of features activated by the guest */
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#define VIRTIO_PCI_GUEST_FEATURES 4 |
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/* A 32-bit r/w PFN for the currently selected queue */
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#define VIRTIO_PCI_QUEUE_PFN 8 |
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/* A 16-bit r/o queue size for the currently selected queue */
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#define VIRTIO_PCI_QUEUE_NUM 12 |
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/* A 16-bit r/w queue selector */
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#define VIRTIO_PCI_QUEUE_SEL 14 |
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/* A 16-bit r/w queue notifier */
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#define VIRTIO_PCI_QUEUE_NOTIFY 16 |
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/* An 8-bit device status register. */
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#define VIRTIO_PCI_STATUS 18 |
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/* An 8-bit r/o interrupt status register. Reading the value will return the
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* current contents of the ISR and will also clear it. This is effectively
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* a read-and-acknowledge. */
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#define VIRTIO_PCI_ISR 19 |
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/* MSI-X registers: only enabled if MSI-X is enabled. */
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/* A 16-bit vector for configuration changes. */
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#define VIRTIO_MSI_CONFIG_VECTOR 20 |
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/* A 16-bit vector for selected queue notifications. */
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#define VIRTIO_MSI_QUEUE_VECTOR 22 |
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/* Config space size */
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#define VIRTIO_PCI_CONFIG_NOMSI 20 |
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#define VIRTIO_PCI_CONFIG_MSI 24 |
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#define VIRTIO_PCI_REGION_SIZE(dev) (msix_present(dev) ? \
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VIRTIO_PCI_CONFIG_MSI : \ |
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VIRTIO_PCI_CONFIG_NOMSI) |
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/* The remaining space is defined by each driver as the per-driver
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* configuration space */
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#define VIRTIO_PCI_CONFIG(dev) (msix_enabled(dev) ? \
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VIRTIO_PCI_CONFIG_MSI : \ |
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VIRTIO_PCI_CONFIG_NOMSI) |
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/* How many bits to shift physical queue address written to QUEUE_PFN.
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* 12 is historical, and due to x86 page size. */
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#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 |
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/* Flags track per-device state like workarounds for quirks in older guests. */
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#define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0) |
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/* QEMU doesn't strictly need write barriers since everything runs in
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* lock-step. We'll leave the calls to wmb() in though to make it obvious for
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* KVM or if kqemu gets SMP support.
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*/
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#define wmb() do { } while (0) |
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/* HACK for virtio to determine if it's running a big endian guest */
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bool virtio_is_big_endian(void); |
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/* virtio device */
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static void virtio_pci_notify(void *opaque, uint16_t vector) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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if (msix_enabled(&proxy->pci_dev))
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msix_notify(&proxy->pci_dev, vector); |
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else
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qemu_set_irq(proxy->pci_dev.irq[0], proxy->vdev->isr & 1); |
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} |
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static void virtio_pci_save_config(void * opaque, QEMUFile *f) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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pci_device_save(&proxy->pci_dev, f); |
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msix_save(&proxy->pci_dev, f); |
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if (msix_present(&proxy->pci_dev))
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qemu_put_be16(f, proxy->vdev->config_vector); |
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} |
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static void virtio_pci_save_queue(void * opaque, int n, QEMUFile *f) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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if (msix_present(&proxy->pci_dev))
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qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); |
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} |
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static int virtio_pci_load_config(void * opaque, QEMUFile *f) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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int ret;
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ret = pci_device_load(&proxy->pci_dev, f); |
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if (ret) {
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return ret;
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} |
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msix_load(&proxy->pci_dev, f); |
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if (msix_present(&proxy->pci_dev)) {
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qemu_get_be16s(f, &proxy->vdev->config_vector); |
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} else {
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proxy->vdev->config_vector = VIRTIO_NO_VECTOR; |
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} |
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if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) {
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return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector);
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} |
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return 0; |
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} |
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static int virtio_pci_load_queue(void * opaque, int n, QEMUFile *f) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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uint16_t vector; |
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if (msix_present(&proxy->pci_dev)) {
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qemu_get_be16s(f, &vector); |
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} else {
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vector = VIRTIO_NO_VECTOR; |
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} |
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virtio_queue_set_vector(proxy->vdev, n, vector); |
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if (vector != VIRTIO_NO_VECTOR) {
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return msix_vector_use(&proxy->pci_dev, vector);
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} |
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return 0; |
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} |
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static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, |
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int n, bool assign, bool set_handler) |
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{ |
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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 = 0; |
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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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error_report("%s: unable to init event notifier: %d",
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__func__, r); |
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return r;
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} |
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virtio_queue_set_host_notifier_fd_handler(vq, true, set_handler);
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memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
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true, n, notifier);
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} else {
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memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
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true, n, notifier);
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virtio_queue_set_host_notifier_fd_handler(vq, false, false); |
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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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static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) |
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{ |
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int n, r;
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if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) ||
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proxy->ioeventfd_disabled || |
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proxy->ioeventfd_started) { |
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return;
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} |
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for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
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if (!virtio_queue_get_num(proxy->vdev, n)) {
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continue;
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} |
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r = virtio_pci_set_host_notifier_internal(proxy, n, true, true); |
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if (r < 0) { |
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goto assign_error;
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} |
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} |
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proxy->ioeventfd_started = true;
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return;
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assign_error:
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while (--n >= 0) { |
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if (!virtio_queue_get_num(proxy->vdev, n)) {
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continue;
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} |
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r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
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assert(r >= 0);
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} |
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proxy->ioeventfd_started = false;
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error_report("%s: failed. Fallback to a userspace (slower).", __func__);
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} |
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static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) |
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{ |
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int r;
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int n;
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if (!proxy->ioeventfd_started) {
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return;
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} |
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for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
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if (!virtio_queue_get_num(proxy->vdev, n)) {
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continue;
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} |
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r = virtio_pci_set_host_notifier_internal(proxy, n, false, false); |
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assert(r >= 0);
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} |
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proxy->ioeventfd_started = false;
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} |
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void virtio_pci_reset(DeviceState *d)
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{ |
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VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev); |
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virtio_pci_stop_ioeventfd(proxy); |
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virtio_reset(proxy->vdev); |
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proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
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} |
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static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
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{ |
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VirtIOPCIProxy *proxy = opaque; |
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VirtIODevice *vdev = proxy->vdev; |
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target_phys_addr_t pa; |
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switch (addr) {
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case VIRTIO_PCI_GUEST_FEATURES:
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/* Guest does not negotiate properly? We have to assume nothing. */
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if (val & (1 << VIRTIO_F_BAD_FEATURE)) { |
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val = vdev->bad_features ? vdev->bad_features(vdev) : 0;
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} |
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virtio_set_features(vdev, val); |
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break;
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case VIRTIO_PCI_QUEUE_PFN:
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pa = (target_phys_addr_t)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
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if (pa == 0) { |
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virtio_pci_stop_ioeventfd(proxy); |
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virtio_reset(proxy->vdev); |
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msix_unuse_all_vectors(&proxy->pci_dev); |
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} |
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else
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virtio_queue_set_addr(vdev, vdev->queue_sel, pa); |
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break;
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case VIRTIO_PCI_QUEUE_SEL:
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if (val < VIRTIO_PCI_QUEUE_MAX)
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vdev->queue_sel = val; |
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break;
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case VIRTIO_PCI_QUEUE_NOTIFY:
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if (val < VIRTIO_PCI_QUEUE_MAX) {
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virtio_queue_notify(vdev, val); |
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} |
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break;
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case VIRTIO_PCI_STATUS:
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if (!(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
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virtio_pci_stop_ioeventfd(proxy); |
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} |
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virtio_set_status(vdev, val & 0xFF);
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if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
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virtio_pci_start_ioeventfd(proxy); |
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} |
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if (vdev->status == 0) { |
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virtio_reset(proxy->vdev); |
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msix_unuse_all_vectors(&proxy->pci_dev); |
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} |
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/* Linux before 2.6.34 sets the device as OK without enabling
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the PCI device bus master bit. In this case we need to disable
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some safety checks. */
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if ((val & VIRTIO_CONFIG_S_DRIVER_OK) &&
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!(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { |
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proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
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} |
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break;
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case VIRTIO_MSI_CONFIG_VECTOR:
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msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); |
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/* Make it possible for guest to discover an error took place. */
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if (msix_vector_use(&proxy->pci_dev, val) < 0) |
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val = VIRTIO_NO_VECTOR; |
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vdev->config_vector = val; |
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break;
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case VIRTIO_MSI_QUEUE_VECTOR:
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msix_vector_unuse(&proxy->pci_dev, |
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virtio_queue_vector(vdev, vdev->queue_sel)); |
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/* Make it possible for guest to discover an error took place. */
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if (msix_vector_use(&proxy->pci_dev, val) < 0) |
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val = VIRTIO_NO_VECTOR; |
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virtio_queue_set_vector(vdev, vdev->queue_sel, val); |
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break;
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default:
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error_report("%s: unexpected address 0x%x value 0x%x",
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__func__, addr, val); |
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break;
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} |
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} |
330 |
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static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
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{ |
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VirtIODevice *vdev = proxy->vdev; |
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uint32_t ret = 0xFFFFFFFF;
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switch (addr) {
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case VIRTIO_PCI_HOST_FEATURES:
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ret = proxy->host_features; |
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break;
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case VIRTIO_PCI_GUEST_FEATURES:
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ret = vdev->guest_features; |
342 |
break;
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case VIRTIO_PCI_QUEUE_PFN:
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ret = virtio_queue_get_addr(vdev, vdev->queue_sel) |
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>> VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
346 |
break;
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case VIRTIO_PCI_QUEUE_NUM:
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ret = virtio_queue_get_num(vdev, vdev->queue_sel); |
349 |
break;
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case VIRTIO_PCI_QUEUE_SEL:
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ret = vdev->queue_sel; |
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break;
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case VIRTIO_PCI_STATUS:
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ret = vdev->status; |
355 |
break;
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case VIRTIO_PCI_ISR:
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/* reading from the ISR also clears it. */
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ret = vdev->isr; |
359 |
vdev->isr = 0;
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qemu_set_irq(proxy->pci_dev.irq[0], 0); |
361 |
break;
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case VIRTIO_MSI_CONFIG_VECTOR:
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ret = vdev->config_vector; |
364 |
break;
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case VIRTIO_MSI_QUEUE_VECTOR:
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ret = virtio_queue_vector(vdev, vdev->queue_sel); |
367 |
break;
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368 |
default:
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break;
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370 |
} |
371 |
|
372 |
return ret;
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373 |
} |
374 |
|
375 |
static uint32_t virtio_pci_config_readb(void *opaque, uint32_t addr) |
376 |
{ |
377 |
VirtIOPCIProxy *proxy = opaque; |
378 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
379 |
if (addr < config)
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return virtio_ioport_read(proxy, addr);
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addr -= config; |
382 |
return virtio_config_readb(proxy->vdev, addr);
|
383 |
} |
384 |
|
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static uint32_t virtio_pci_config_readw(void *opaque, uint32_t addr) |
386 |
{ |
387 |
VirtIOPCIProxy *proxy = opaque; |
388 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
389 |
uint16_t val; |
390 |
if (addr < config)
|
391 |
return virtio_ioport_read(proxy, addr);
|
392 |
addr -= config; |
393 |
val = virtio_config_readw(proxy->vdev, addr); |
394 |
if (virtio_is_big_endian()) {
|
395 |
/*
|
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* virtio is odd, ioports are LE but config space is target native
|
397 |
* endian. However, in qemu, all PIO is LE, so we need to re-swap
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398 |
* on BE targets
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399 |
*/
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400 |
val = bswap16(val); |
401 |
} |
402 |
return val;
|
403 |
} |
404 |
|
405 |
static uint32_t virtio_pci_config_readl(void *opaque, uint32_t addr) |
406 |
{ |
407 |
VirtIOPCIProxy *proxy = opaque; |
408 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
409 |
uint32_t val; |
410 |
if (addr < config)
|
411 |
return virtio_ioport_read(proxy, addr);
|
412 |
addr -= config; |
413 |
val = virtio_config_readl(proxy->vdev, addr); |
414 |
if (virtio_is_big_endian()) {
|
415 |
val = bswap32(val); |
416 |
} |
417 |
return val;
|
418 |
} |
419 |
|
420 |
static void virtio_pci_config_writeb(void *opaque, uint32_t addr, uint32_t val) |
421 |
{ |
422 |
VirtIOPCIProxy *proxy = opaque; |
423 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
424 |
if (addr < config) {
|
425 |
virtio_ioport_write(proxy, addr, val); |
426 |
return;
|
427 |
} |
428 |
addr -= config; |
429 |
virtio_config_writeb(proxy->vdev, addr, val); |
430 |
} |
431 |
|
432 |
static void virtio_pci_config_writew(void *opaque, uint32_t addr, uint32_t val) |
433 |
{ |
434 |
VirtIOPCIProxy *proxy = opaque; |
435 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
436 |
if (addr < config) {
|
437 |
virtio_ioport_write(proxy, addr, val); |
438 |
return;
|
439 |
} |
440 |
addr -= config; |
441 |
if (virtio_is_big_endian()) {
|
442 |
val = bswap16(val); |
443 |
} |
444 |
virtio_config_writew(proxy->vdev, addr, val); |
445 |
} |
446 |
|
447 |
static void virtio_pci_config_writel(void *opaque, uint32_t addr, uint32_t val) |
448 |
{ |
449 |
VirtIOPCIProxy *proxy = opaque; |
450 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
451 |
if (addr < config) {
|
452 |
virtio_ioport_write(proxy, addr, val); |
453 |
return;
|
454 |
} |
455 |
addr -= config; |
456 |
if (virtio_is_big_endian()) {
|
457 |
val = bswap32(val); |
458 |
} |
459 |
virtio_config_writel(proxy->vdev, addr, val); |
460 |
} |
461 |
|
462 |
static const MemoryRegionPortio virtio_portio[] = { |
463 |
{ 0, 0x10000, 1, .write = virtio_pci_config_writeb, }, |
464 |
{ 0, 0x10000, 2, .write = virtio_pci_config_writew, }, |
465 |
{ 0, 0x10000, 4, .write = virtio_pci_config_writel, }, |
466 |
{ 0, 0x10000, 1, .read = virtio_pci_config_readb, }, |
467 |
{ 0, 0x10000, 2, .read = virtio_pci_config_readw, }, |
468 |
{ 0, 0x10000, 4, .read = virtio_pci_config_readl, }, |
469 |
PORTIO_END_OF_LIST() |
470 |
}; |
471 |
|
472 |
static const MemoryRegionOps virtio_pci_config_ops = { |
473 |
.old_portio = virtio_portio, |
474 |
.endianness = DEVICE_LITTLE_ENDIAN, |
475 |
}; |
476 |
|
477 |
static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, |
478 |
uint32_t val, int len)
|
479 |
{ |
480 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
481 |
|
482 |
pci_default_write_config(pci_dev, address, val, len); |
483 |
|
484 |
if (range_covers_byte(address, len, PCI_COMMAND) &&
|
485 |
!(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && |
486 |
!(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { |
487 |
virtio_pci_stop_ioeventfd(proxy); |
488 |
virtio_set_status(proxy->vdev, |
489 |
proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); |
490 |
} |
491 |
} |
492 |
|
493 |
static unsigned virtio_pci_get_features(void *opaque) |
494 |
{ |
495 |
VirtIOPCIProxy *proxy = opaque; |
496 |
return proxy->host_features;
|
497 |
} |
498 |
|
499 |
static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy, |
500 |
unsigned int queue_no, |
501 |
unsigned int vector, |
502 |
MSIMessage msg) |
503 |
{ |
504 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
505 |
EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
506 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
507 |
int ret;
|
508 |
|
509 |
if (irqfd->users == 0) { |
510 |
ret = kvm_irqchip_add_msi_route(kvm_state, msg); |
511 |
if (ret < 0) { |
512 |
return ret;
|
513 |
} |
514 |
irqfd->virq = ret; |
515 |
} |
516 |
irqfd->users++; |
517 |
|
518 |
ret = kvm_irqchip_add_irq_notifier(kvm_state, n, irqfd->virq); |
519 |
if (ret < 0) { |
520 |
if (--irqfd->users == 0) { |
521 |
kvm_irqchip_release_virq(kvm_state, irqfd->virq); |
522 |
} |
523 |
return ret;
|
524 |
} |
525 |
|
526 |
virtio_queue_set_guest_notifier_fd_handler(vq, true, true); |
527 |
return 0; |
528 |
} |
529 |
|
530 |
static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy, |
531 |
unsigned int queue_no, |
532 |
unsigned int vector) |
533 |
{ |
534 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
535 |
EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
536 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
537 |
int ret;
|
538 |
|
539 |
ret = kvm_irqchip_remove_irq_notifier(kvm_state, n, irqfd->virq); |
540 |
assert(ret == 0);
|
541 |
|
542 |
if (--irqfd->users == 0) { |
543 |
kvm_irqchip_release_virq(kvm_state, irqfd->virq); |
544 |
} |
545 |
|
546 |
virtio_queue_set_guest_notifier_fd_handler(vq, true, false); |
547 |
} |
548 |
|
549 |
static int kvm_virtio_pci_vector_use(PCIDevice *dev, unsigned vector, |
550 |
MSIMessage msg) |
551 |
{ |
552 |
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
553 |
VirtIODevice *vdev = proxy->vdev; |
554 |
int ret, queue_no;
|
555 |
|
556 |
for (queue_no = 0; queue_no < VIRTIO_PCI_QUEUE_MAX; queue_no++) { |
557 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
558 |
break;
|
559 |
} |
560 |
if (virtio_queue_vector(vdev, queue_no) != vector) {
|
561 |
continue;
|
562 |
} |
563 |
ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg); |
564 |
if (ret < 0) { |
565 |
goto undo;
|
566 |
} |
567 |
} |
568 |
return 0; |
569 |
|
570 |
undo:
|
571 |
while (--queue_no >= 0) { |
572 |
if (virtio_queue_vector(vdev, queue_no) != vector) {
|
573 |
continue;
|
574 |
} |
575 |
kvm_virtio_pci_vq_vector_release(proxy, queue_no, vector); |
576 |
} |
577 |
return ret;
|
578 |
} |
579 |
|
580 |
static void kvm_virtio_pci_vector_release(PCIDevice *dev, unsigned vector) |
581 |
{ |
582 |
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
583 |
VirtIODevice *vdev = proxy->vdev; |
584 |
int queue_no;
|
585 |
|
586 |
for (queue_no = 0; queue_no < VIRTIO_PCI_QUEUE_MAX; queue_no++) { |
587 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
588 |
break;
|
589 |
} |
590 |
if (virtio_queue_vector(vdev, queue_no) != vector) {
|
591 |
continue;
|
592 |
} |
593 |
kvm_virtio_pci_vq_vector_release(proxy, queue_no, vector); |
594 |
} |
595 |
} |
596 |
|
597 |
static int virtio_pci_set_guest_notifier(void *opaque, int n, bool assign) |
598 |
{ |
599 |
VirtIOPCIProxy *proxy = opaque; |
600 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
601 |
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); |
602 |
|
603 |
if (assign) {
|
604 |
int r = event_notifier_init(notifier, 0); |
605 |
if (r < 0) { |
606 |
return r;
|
607 |
} |
608 |
virtio_queue_set_guest_notifier_fd_handler(vq, true, false); |
609 |
} else {
|
610 |
virtio_queue_set_guest_notifier_fd_handler(vq, false, false); |
611 |
event_notifier_cleanup(notifier); |
612 |
} |
613 |
|
614 |
return 0; |
615 |
} |
616 |
|
617 |
static bool virtio_pci_query_guest_notifiers(void *opaque) |
618 |
{ |
619 |
VirtIOPCIProxy *proxy = opaque; |
620 |
return msix_enabled(&proxy->pci_dev);
|
621 |
} |
622 |
|
623 |
static int virtio_pci_set_guest_notifiers(void *opaque, bool assign) |
624 |
{ |
625 |
VirtIOPCIProxy *proxy = opaque; |
626 |
VirtIODevice *vdev = proxy->vdev; |
627 |
int r, n;
|
628 |
|
629 |
/* Must unset vector notifier while guest notifier is still assigned */
|
630 |
if (kvm_msi_via_irqfd_enabled() && !assign) {
|
631 |
msix_unset_vector_notifiers(&proxy->pci_dev); |
632 |
g_free(proxy->vector_irqfd); |
633 |
proxy->vector_irqfd = NULL;
|
634 |
} |
635 |
|
636 |
for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { |
637 |
if (!virtio_queue_get_num(vdev, n)) {
|
638 |
break;
|
639 |
} |
640 |
|
641 |
r = virtio_pci_set_guest_notifier(opaque, n, assign); |
642 |
if (r < 0) { |
643 |
goto assign_error;
|
644 |
} |
645 |
} |
646 |
|
647 |
/* Must set vector notifier after guest notifier has been assigned */
|
648 |
if (kvm_msi_via_irqfd_enabled() && assign) {
|
649 |
proxy->vector_irqfd = |
650 |
g_malloc0(sizeof(*proxy->vector_irqfd) *
|
651 |
msix_nr_vectors_allocated(&proxy->pci_dev)); |
652 |
r = msix_set_vector_notifiers(&proxy->pci_dev, |
653 |
kvm_virtio_pci_vector_use, |
654 |
kvm_virtio_pci_vector_release); |
655 |
if (r < 0) { |
656 |
goto assign_error;
|
657 |
} |
658 |
} |
659 |
|
660 |
return 0; |
661 |
|
662 |
assign_error:
|
663 |
/* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
|
664 |
assert(assign); |
665 |
while (--n >= 0) { |
666 |
virtio_pci_set_guest_notifier(opaque, n, !assign); |
667 |
} |
668 |
return r;
|
669 |
} |
670 |
|
671 |
static int virtio_pci_set_host_notifier(void *opaque, int n, bool assign) |
672 |
{ |
673 |
VirtIOPCIProxy *proxy = opaque; |
674 |
|
675 |
/* Stop using ioeventfd for virtqueue kick if the device starts using host
|
676 |
* notifiers. This makes it easy to avoid stepping on each others' toes.
|
677 |
*/
|
678 |
proxy->ioeventfd_disabled = assign; |
679 |
if (assign) {
|
680 |
virtio_pci_stop_ioeventfd(proxy); |
681 |
} |
682 |
/* We don't need to start here: it's not needed because backend
|
683 |
* currently only stops on status change away from ok,
|
684 |
* reset, vmstop and such. If we do add code to start here,
|
685 |
* need to check vmstate, device state etc. */
|
686 |
return virtio_pci_set_host_notifier_internal(proxy, n, assign, false); |
687 |
} |
688 |
|
689 |
static void virtio_pci_vmstate_change(void *opaque, bool running) |
690 |
{ |
691 |
VirtIOPCIProxy *proxy = opaque; |
692 |
|
693 |
if (running) {
|
694 |
/* Try to find out if the guest has bus master disabled, but is
|
695 |
in ready state. Then we have a buggy guest OS. */
|
696 |
if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) &&
|
697 |
!(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { |
698 |
proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
699 |
} |
700 |
virtio_pci_start_ioeventfd(proxy); |
701 |
} else {
|
702 |
virtio_pci_stop_ioeventfd(proxy); |
703 |
} |
704 |
} |
705 |
|
706 |
static const VirtIOBindings virtio_pci_bindings = { |
707 |
.notify = virtio_pci_notify, |
708 |
.save_config = virtio_pci_save_config, |
709 |
.load_config = virtio_pci_load_config, |
710 |
.save_queue = virtio_pci_save_queue, |
711 |
.load_queue = virtio_pci_load_queue, |
712 |
.get_features = virtio_pci_get_features, |
713 |
.query_guest_notifiers = virtio_pci_query_guest_notifiers, |
714 |
.set_host_notifier = virtio_pci_set_host_notifier, |
715 |
.set_guest_notifiers = virtio_pci_set_guest_notifiers, |
716 |
.vmstate_change = virtio_pci_vmstate_change, |
717 |
}; |
718 |
|
719 |
void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev)
|
720 |
{ |
721 |
uint8_t *config; |
722 |
uint32_t size; |
723 |
|
724 |
proxy->vdev = vdev; |
725 |
|
726 |
config = proxy->pci_dev.config; |
727 |
|
728 |
if (proxy->class_code) {
|
729 |
pci_config_set_class(config, proxy->class_code); |
730 |
} |
731 |
pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
732 |
pci_get_word(config + PCI_VENDOR_ID)); |
733 |
pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); |
734 |
config[PCI_INTERRUPT_PIN] = 1;
|
735 |
|
736 |
if (vdev->nvectors &&
|
737 |
msix_init_exclusive_bar(&proxy->pci_dev, vdev->nvectors, 1)) {
|
738 |
vdev->nvectors = 0;
|
739 |
} |
740 |
|
741 |
proxy->pci_dev.config_write = virtio_write_config; |
742 |
|
743 |
size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
744 |
if (size & (size-1)) |
745 |
size = 1 << qemu_fls(size);
|
746 |
|
747 |
memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
748 |
"virtio-pci", size);
|
749 |
pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO,
|
750 |
&proxy->bar); |
751 |
|
752 |
if (!kvm_has_many_ioeventfds()) {
|
753 |
proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; |
754 |
} |
755 |
|
756 |
virtio_bind_device(vdev, &virtio_pci_bindings, proxy); |
757 |
proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
758 |
proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
759 |
proxy->host_features = vdev->get_features(vdev, proxy->host_features); |
760 |
} |
761 |
|
762 |
static int virtio_blk_init_pci(PCIDevice *pci_dev) |
763 |
{ |
764 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
765 |
VirtIODevice *vdev; |
766 |
|
767 |
if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
|
768 |
proxy->class_code != PCI_CLASS_STORAGE_OTHER) |
769 |
proxy->class_code = PCI_CLASS_STORAGE_SCSI; |
770 |
|
771 |
vdev = virtio_blk_init(&pci_dev->qdev, &proxy->blk); |
772 |
if (!vdev) {
|
773 |
return -1; |
774 |
} |
775 |
vdev->nvectors = proxy->nvectors; |
776 |
virtio_init_pci(proxy, vdev); |
777 |
/* make the actual value visible */
|
778 |
proxy->nvectors = vdev->nvectors; |
779 |
return 0; |
780 |
} |
781 |
|
782 |
static void virtio_exit_pci(PCIDevice *pci_dev) |
783 |
{ |
784 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
785 |
|
786 |
memory_region_destroy(&proxy->bar); |
787 |
msix_uninit_exclusive_bar(pci_dev); |
788 |
} |
789 |
|
790 |
static void virtio_blk_exit_pci(PCIDevice *pci_dev) |
791 |
{ |
792 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
793 |
|
794 |
virtio_pci_stop_ioeventfd(proxy); |
795 |
virtio_blk_exit(proxy->vdev); |
796 |
virtio_exit_pci(pci_dev); |
797 |
} |
798 |
|
799 |
static int virtio_serial_init_pci(PCIDevice *pci_dev) |
800 |
{ |
801 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
802 |
VirtIODevice *vdev; |
803 |
|
804 |
if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
|
805 |
proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
|
806 |
proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */
|
807 |
proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; |
808 |
|
809 |
vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); |
810 |
if (!vdev) {
|
811 |
return -1; |
812 |
} |
813 |
vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
814 |
? proxy->serial.max_virtserial_ports + 1
|
815 |
: proxy->nvectors; |
816 |
virtio_init_pci(proxy, vdev); |
817 |
proxy->nvectors = vdev->nvectors; |
818 |
return 0; |
819 |
} |
820 |
|
821 |
static void virtio_serial_exit_pci(PCIDevice *pci_dev) |
822 |
{ |
823 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
824 |
|
825 |
virtio_pci_stop_ioeventfd(proxy); |
826 |
virtio_serial_exit(proxy->vdev); |
827 |
virtio_exit_pci(pci_dev); |
828 |
} |
829 |
|
830 |
static int virtio_net_init_pci(PCIDevice *pci_dev) |
831 |
{ |
832 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
833 |
VirtIODevice *vdev; |
834 |
|
835 |
vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net); |
836 |
|
837 |
vdev->nvectors = proxy->nvectors; |
838 |
virtio_init_pci(proxy, vdev); |
839 |
|
840 |
/* make the actual value visible */
|
841 |
proxy->nvectors = vdev->nvectors; |
842 |
return 0; |
843 |
} |
844 |
|
845 |
static void virtio_net_exit_pci(PCIDevice *pci_dev) |
846 |
{ |
847 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
848 |
|
849 |
virtio_pci_stop_ioeventfd(proxy); |
850 |
virtio_net_exit(proxy->vdev); |
851 |
virtio_exit_pci(pci_dev); |
852 |
} |
853 |
|
854 |
static int virtio_balloon_init_pci(PCIDevice *pci_dev) |
855 |
{ |
856 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
857 |
VirtIODevice *vdev; |
858 |
|
859 |
if (proxy->class_code != PCI_CLASS_OTHERS &&
|
860 |
proxy->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */
|
861 |
proxy->class_code = PCI_CLASS_OTHERS; |
862 |
} |
863 |
|
864 |
vdev = virtio_balloon_init(&pci_dev->qdev); |
865 |
if (!vdev) {
|
866 |
return -1; |
867 |
} |
868 |
virtio_init_pci(proxy, vdev); |
869 |
return 0; |
870 |
} |
871 |
|
872 |
static void virtio_balloon_exit_pci(PCIDevice *pci_dev) |
873 |
{ |
874 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
875 |
|
876 |
virtio_pci_stop_ioeventfd(proxy); |
877 |
virtio_balloon_exit(proxy->vdev); |
878 |
virtio_exit_pci(pci_dev); |
879 |
} |
880 |
|
881 |
static Property virtio_blk_properties[] = {
|
882 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
883 |
DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, blk.conf), |
884 |
DEFINE_BLOCK_CHS_PROPERTIES(VirtIOPCIProxy, blk.conf), |
885 |
DEFINE_PROP_STRING("serial", VirtIOPCIProxy, blk.serial),
|
886 |
#ifdef __linux__
|
887 |
DEFINE_PROP_BIT("scsi", VirtIOPCIProxy, blk.scsi, 0, true), |
888 |
#endif
|
889 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
890 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
891 |
DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), |
892 |
DEFINE_PROP_END_OF_LIST(), |
893 |
}; |
894 |
|
895 |
static void virtio_blk_class_init(ObjectClass *klass, void *data) |
896 |
{ |
897 |
DeviceClass *dc = DEVICE_CLASS(klass); |
898 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
899 |
|
900 |
k->init = virtio_blk_init_pci; |
901 |
k->exit = virtio_blk_exit_pci; |
902 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
903 |
k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; |
904 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
905 |
k->class_id = PCI_CLASS_STORAGE_SCSI; |
906 |
dc->reset = virtio_pci_reset; |
907 |
dc->props = virtio_blk_properties; |
908 |
} |
909 |
|
910 |
static TypeInfo virtio_blk_info = {
|
911 |
.name = "virtio-blk-pci",
|
912 |
.parent = TYPE_PCI_DEVICE, |
913 |
.instance_size = sizeof(VirtIOPCIProxy),
|
914 |
.class_init = virtio_blk_class_init, |
915 |
}; |
916 |
|
917 |
static Property virtio_net_properties[] = {
|
918 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), |
919 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), |
920 |
DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), |
921 |
DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), |
922 |
DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, net.txtimer, TX_TIMER_INTERVAL),
|
923 |
DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy, net.txburst, TX_BURST),
|
924 |
DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx),
|
925 |
DEFINE_PROP_END_OF_LIST(), |
926 |
}; |
927 |
|
928 |
static void virtio_net_class_init(ObjectClass *klass, void *data) |
929 |
{ |
930 |
DeviceClass *dc = DEVICE_CLASS(klass); |
931 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
932 |
|
933 |
k->init = virtio_net_init_pci; |
934 |
k->exit = virtio_net_exit_pci; |
935 |
k->romfile = "pxe-virtio.rom";
|
936 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
937 |
k->device_id = PCI_DEVICE_ID_VIRTIO_NET; |
938 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
939 |
k->class_id = PCI_CLASS_NETWORK_ETHERNET; |
940 |
dc->reset = virtio_pci_reset; |
941 |
dc->props = virtio_net_properties; |
942 |
} |
943 |
|
944 |
static TypeInfo virtio_net_info = {
|
945 |
.name = "virtio-net-pci",
|
946 |
.parent = TYPE_PCI_DEVICE, |
947 |
.instance_size = sizeof(VirtIOPCIProxy),
|
948 |
.class_init = virtio_net_class_init, |
949 |
}; |
950 |
|
951 |
static Property virtio_serial_properties[] = {
|
952 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
953 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED),
|
954 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
955 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
956 |
DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, serial.max_virtserial_ports, 31), |
957 |
DEFINE_PROP_END_OF_LIST(), |
958 |
}; |
959 |
|
960 |
static void virtio_serial_class_init(ObjectClass *klass, void *data) |
961 |
{ |
962 |
DeviceClass *dc = DEVICE_CLASS(klass); |
963 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
964 |
|
965 |
k->init = virtio_serial_init_pci; |
966 |
k->exit = virtio_serial_exit_pci; |
967 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
968 |
k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; |
969 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
970 |
k->class_id = PCI_CLASS_COMMUNICATION_OTHER; |
971 |
dc->reset = virtio_pci_reset; |
972 |
dc->props = virtio_serial_properties; |
973 |
} |
974 |
|
975 |
static TypeInfo virtio_serial_info = {
|
976 |
.name = "virtio-serial-pci",
|
977 |
.parent = TYPE_PCI_DEVICE, |
978 |
.instance_size = sizeof(VirtIOPCIProxy),
|
979 |
.class_init = virtio_serial_class_init, |
980 |
}; |
981 |
|
982 |
static Property virtio_balloon_properties[] = {
|
983 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
984 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
985 |
DEFINE_PROP_END_OF_LIST(), |
986 |
}; |
987 |
|
988 |
static void virtio_balloon_class_init(ObjectClass *klass, void *data) |
989 |
{ |
990 |
DeviceClass *dc = DEVICE_CLASS(klass); |
991 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
992 |
|
993 |
k->init = virtio_balloon_init_pci; |
994 |
k->exit = virtio_balloon_exit_pci; |
995 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
996 |
k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; |
997 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
998 |
k->class_id = PCI_CLASS_OTHERS; |
999 |
dc->reset = virtio_pci_reset; |
1000 |
dc->props = virtio_balloon_properties; |
1001 |
} |
1002 |
|
1003 |
static TypeInfo virtio_balloon_info = {
|
1004 |
.name = "virtio-balloon-pci",
|
1005 |
.parent = TYPE_PCI_DEVICE, |
1006 |
.instance_size = sizeof(VirtIOPCIProxy),
|
1007 |
.class_init = virtio_balloon_class_init, |
1008 |
}; |
1009 |
|
1010 |
static int virtio_scsi_init_pci(PCIDevice *pci_dev) |
1011 |
{ |
1012 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
1013 |
VirtIODevice *vdev; |
1014 |
|
1015 |
vdev = virtio_scsi_init(&pci_dev->qdev, &proxy->scsi); |
1016 |
if (!vdev) {
|
1017 |
return -EINVAL;
|
1018 |
} |
1019 |
|
1020 |
vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
1021 |
? proxy->scsi.num_queues + 3
|
1022 |
: proxy->nvectors; |
1023 |
virtio_init_pci(proxy, vdev); |
1024 |
|
1025 |
/* make the actual value visible */
|
1026 |
proxy->nvectors = vdev->nvectors; |
1027 |
return 0; |
1028 |
} |
1029 |
|
1030 |
static void virtio_scsi_exit_pci(PCIDevice *pci_dev) |
1031 |
{ |
1032 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
1033 |
|
1034 |
virtio_scsi_exit(proxy->vdev); |
1035 |
virtio_exit_pci(pci_dev); |
1036 |
} |
1037 |
|
1038 |
static Property virtio_scsi_properties[] = {
|
1039 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
1040 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, DEV_NVECTORS_UNSPECIFIED),
|
1041 |
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOPCIProxy, host_features, scsi), |
1042 |
DEFINE_PROP_END_OF_LIST(), |
1043 |
}; |
1044 |
|
1045 |
static void virtio_scsi_class_init(ObjectClass *klass, void *data) |
1046 |
{ |
1047 |
DeviceClass *dc = DEVICE_CLASS(klass); |
1048 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
1049 |
|
1050 |
k->init = virtio_scsi_init_pci; |
1051 |
k->exit = virtio_scsi_exit_pci; |
1052 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
1053 |
k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; |
1054 |
k->revision = 0x00;
|
1055 |
k->class_id = PCI_CLASS_STORAGE_SCSI; |
1056 |
dc->reset = virtio_pci_reset; |
1057 |
dc->props = virtio_scsi_properties; |
1058 |
} |
1059 |
|
1060 |
static TypeInfo virtio_scsi_info = {
|
1061 |
.name = "virtio-scsi-pci",
|
1062 |
.parent = TYPE_PCI_DEVICE, |
1063 |
.instance_size = sizeof(VirtIOPCIProxy),
|
1064 |
.class_init = virtio_scsi_class_init, |
1065 |
}; |
1066 |
|
1067 |
static void virtio_pci_register_types(void) |
1068 |
{ |
1069 |
type_register_static(&virtio_blk_info); |
1070 |
type_register_static(&virtio_net_info); |
1071 |
type_register_static(&virtio_serial_info); |
1072 |
type_register_static(&virtio_balloon_info); |
1073 |
type_register_static(&virtio_scsi_info); |
1074 |
} |
1075 |
|
1076 |
type_init(virtio_pci_register_types) |