root / hw / virtio / virtio-pci.c @ 47b43a1f
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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 "hw/virtio/virtio.h" |
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#include "hw/virtio/virtio-blk.h" |
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#include "hw/virtio/virtio-net.h" |
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#include "hw/virtio/virtio-serial.h" |
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#include "hw/virtio/virtio-scsi.h" |
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#include "hw/virtio/virtio-balloon.h" |
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#include "hw/pci/pci.h" |
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#include "qemu/error-report.h" |
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#include "hw/pci/msi.h" |
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#include "hw/pci/msix.h" |
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#include "hw/loader.h" |
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#include "sysemu/kvm.h" |
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#include "sysemu/blockdev.h" |
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#include "virtio-pci.h" |
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#include "qemu/range.h" |
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#include "hw/virtio/virtio-bus.h" |
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|
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/* from Linux's linux/virtio_pci.h */
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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/* An 8-bit device status register. */
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#define VIRTIO_PCI_STATUS 18 |
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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/* DeviceState to VirtIOPCIProxy. For use off data-path. TODO: use QOM. */
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static inline VirtIOPCIProxy *to_virtio_pci_proxy(DeviceState *d) |
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{
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return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
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} |
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|
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/* DeviceState to VirtIOPCIProxy. Note: used on datapath,
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* be careful and test performance if you change this.
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*/
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static inline VirtIOPCIProxy *to_virtio_pci_proxy_fast(DeviceState *d) |
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{
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return container_of(d, VirtIOPCIProxy, pci_dev.qdev);
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} |
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static void virtio_pci_notify(DeviceState *d, uint16_t vector) |
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{
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VirtIOPCIProxy *proxy = to_virtio_pci_proxy_fast(d); |
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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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|
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static void virtio_pci_save_config(DeviceState *d, QEMUFile *f) |
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{
|
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VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
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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(DeviceState *d, int n, QEMUFile *f) |
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{
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VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
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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(DeviceState *d, QEMUFile *f) |
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{
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VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
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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_unuse_all_vectors(&proxy->pci_dev); |
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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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|
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static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f) |
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{
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VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
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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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|
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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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|
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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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static void virtio_pci_reset(DeviceState *d) |
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{
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VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
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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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proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
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} |
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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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hwaddr pa; |
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|
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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 = (hwaddr)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); |
| 304 |
} |
| 305 |
|
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virtio_set_status(vdev, val & 0xFF);
|
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|
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if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
|
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virtio_pci_start_ioeventfd(proxy); |
| 310 |
} |
| 311 |
|
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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); |
| 315 |
} |
| 316 |
|
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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
|
| 319 |
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; |
| 323 |
} |
| 324 |
break;
|
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case VIRTIO_MSI_CONFIG_VECTOR:
|
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msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); |
| 327 |
/* Make it possible for guest to discover an error took place. */
|
| 328 |
if (msix_vector_use(&proxy->pci_dev, val) < 0) |
| 329 |
val = VIRTIO_NO_VECTOR; |
| 330 |
vdev->config_vector = val; |
| 331 |
break;
|
| 332 |
case VIRTIO_MSI_QUEUE_VECTOR:
|
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msix_vector_unuse(&proxy->pci_dev, |
| 334 |
virtio_queue_vector(vdev, vdev->queue_sel)); |
| 335 |
/* Make it possible for guest to discover an error took place. */
|
| 336 |
if (msix_vector_use(&proxy->pci_dev, val) < 0) |
| 337 |
val = VIRTIO_NO_VECTOR; |
| 338 |
virtio_queue_set_vector(vdev, vdev->queue_sel, val); |
| 339 |
break;
|
| 340 |
default:
|
| 341 |
error_report("%s: unexpected address 0x%x value 0x%x",
|
| 342 |
__func__, addr, val); |
| 343 |
break;
|
| 344 |
} |
| 345 |
} |
| 346 |
|
| 347 |
static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr)
|
| 348 |
{
|
| 349 |
VirtIODevice *vdev = proxy->vdev; |
| 350 |
uint32_t ret = 0xFFFFFFFF;
|
| 351 |
|
| 352 |
switch (addr) {
|
| 353 |
case VIRTIO_PCI_HOST_FEATURES:
|
| 354 |
ret = proxy->host_features; |
| 355 |
break;
|
| 356 |
case VIRTIO_PCI_GUEST_FEATURES:
|
| 357 |
ret = vdev->guest_features; |
| 358 |
break;
|
| 359 |
case VIRTIO_PCI_QUEUE_PFN:
|
| 360 |
ret = virtio_queue_get_addr(vdev, vdev->queue_sel) |
| 361 |
>> VIRTIO_PCI_QUEUE_ADDR_SHIFT; |
| 362 |
break;
|
| 363 |
case VIRTIO_PCI_QUEUE_NUM:
|
| 364 |
ret = virtio_queue_get_num(vdev, vdev->queue_sel); |
| 365 |
break;
|
| 366 |
case VIRTIO_PCI_QUEUE_SEL:
|
| 367 |
ret = vdev->queue_sel; |
| 368 |
break;
|
| 369 |
case VIRTIO_PCI_STATUS:
|
| 370 |
ret = vdev->status; |
| 371 |
break;
|
| 372 |
case VIRTIO_PCI_ISR:
|
| 373 |
/* reading from the ISR also clears it. */
|
| 374 |
ret = vdev->isr; |
| 375 |
vdev->isr = 0;
|
| 376 |
qemu_set_irq(proxy->pci_dev.irq[0], 0); |
| 377 |
break;
|
| 378 |
case VIRTIO_MSI_CONFIG_VECTOR:
|
| 379 |
ret = vdev->config_vector; |
| 380 |
break;
|
| 381 |
case VIRTIO_MSI_QUEUE_VECTOR:
|
| 382 |
ret = virtio_queue_vector(vdev, vdev->queue_sel); |
| 383 |
break;
|
| 384 |
default:
|
| 385 |
break;
|
| 386 |
} |
| 387 |
|
| 388 |
return ret;
|
| 389 |
} |
| 390 |
|
| 391 |
static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, |
| 392 |
unsigned size)
|
| 393 |
{
|
| 394 |
VirtIOPCIProxy *proxy = opaque; |
| 395 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
| 396 |
uint64_t val = 0;
|
| 397 |
if (addr < config) {
|
| 398 |
return virtio_ioport_read(proxy, addr);
|
| 399 |
} |
| 400 |
addr -= config; |
| 401 |
|
| 402 |
switch (size) {
|
| 403 |
case 1: |
| 404 |
val = virtio_config_readb(proxy->vdev, addr); |
| 405 |
break;
|
| 406 |
case 2: |
| 407 |
val = virtio_config_readw(proxy->vdev, addr); |
| 408 |
if (virtio_is_big_endian()) {
|
| 409 |
val = bswap16(val); |
| 410 |
} |
| 411 |
break;
|
| 412 |
case 4: |
| 413 |
val = virtio_config_readl(proxy->vdev, addr); |
| 414 |
if (virtio_is_big_endian()) {
|
| 415 |
val = bswap32(val); |
| 416 |
} |
| 417 |
break;
|
| 418 |
} |
| 419 |
return val;
|
| 420 |
} |
| 421 |
|
| 422 |
static void virtio_pci_config_write(void *opaque, hwaddr addr, |
| 423 |
uint64_t val, unsigned size)
|
| 424 |
{
|
| 425 |
VirtIOPCIProxy *proxy = opaque; |
| 426 |
uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); |
| 427 |
if (addr < config) {
|
| 428 |
virtio_ioport_write(proxy, addr, val); |
| 429 |
return;
|
| 430 |
} |
| 431 |
addr -= config; |
| 432 |
/*
|
| 433 |
* Virtio-PCI is odd. Ioports are LE but config space is target native
|
| 434 |
* endian.
|
| 435 |
*/
|
| 436 |
switch (size) {
|
| 437 |
case 1: |
| 438 |
virtio_config_writeb(proxy->vdev, addr, val); |
| 439 |
break;
|
| 440 |
case 2: |
| 441 |
if (virtio_is_big_endian()) {
|
| 442 |
val = bswap16(val); |
| 443 |
} |
| 444 |
virtio_config_writew(proxy->vdev, addr, val); |
| 445 |
break;
|
| 446 |
case 4: |
| 447 |
if (virtio_is_big_endian()) {
|
| 448 |
val = bswap32(val); |
| 449 |
} |
| 450 |
virtio_config_writel(proxy->vdev, addr, val); |
| 451 |
break;
|
| 452 |
} |
| 453 |
} |
| 454 |
|
| 455 |
static const MemoryRegionOps virtio_pci_config_ops = { |
| 456 |
.read = virtio_pci_config_read, |
| 457 |
.write = virtio_pci_config_write, |
| 458 |
.impl = {
|
| 459 |
.min_access_size = 1,
|
| 460 |
.max_access_size = 4,
|
| 461 |
}, |
| 462 |
.endianness = DEVICE_LITTLE_ENDIAN, |
| 463 |
}; |
| 464 |
|
| 465 |
static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, |
| 466 |
uint32_t val, int len)
|
| 467 |
{
|
| 468 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 469 |
|
| 470 |
pci_default_write_config(pci_dev, address, val, len); |
| 471 |
|
| 472 |
if (range_covers_byte(address, len, PCI_COMMAND) &&
|
| 473 |
!(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && |
| 474 |
!(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) {
|
| 475 |
virtio_pci_stop_ioeventfd(proxy); |
| 476 |
virtio_set_status(proxy->vdev, |
| 477 |
proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); |
| 478 |
} |
| 479 |
} |
| 480 |
|
| 481 |
static unsigned virtio_pci_get_features(DeviceState *d) |
| 482 |
{
|
| 483 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
| 484 |
return proxy->host_features;
|
| 485 |
} |
| 486 |
|
| 487 |
static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy, |
| 488 |
unsigned int queue_no, |
| 489 |
unsigned int vector, |
| 490 |
MSIMessage msg) |
| 491 |
{
|
| 492 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
| 493 |
int ret;
|
| 494 |
|
| 495 |
if (irqfd->users == 0) { |
| 496 |
ret = kvm_irqchip_add_msi_route(kvm_state, msg); |
| 497 |
if (ret < 0) { |
| 498 |
return ret;
|
| 499 |
} |
| 500 |
irqfd->virq = ret; |
| 501 |
} |
| 502 |
irqfd->users++; |
| 503 |
return 0; |
| 504 |
} |
| 505 |
|
| 506 |
static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy, |
| 507 |
unsigned int vector) |
| 508 |
{
|
| 509 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
| 510 |
if (--irqfd->users == 0) { |
| 511 |
kvm_irqchip_release_virq(kvm_state, irqfd->virq); |
| 512 |
} |
| 513 |
} |
| 514 |
|
| 515 |
static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy, |
| 516 |
unsigned int queue_no, |
| 517 |
unsigned int vector) |
| 518 |
{
|
| 519 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
| 520 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
| 521 |
EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
| 522 |
int ret;
|
| 523 |
ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, irqfd->virq); |
| 524 |
return ret;
|
| 525 |
} |
| 526 |
|
| 527 |
static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy, |
| 528 |
unsigned int queue_no, |
| 529 |
unsigned int vector) |
| 530 |
{
|
| 531 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
| 532 |
EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
| 533 |
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; |
| 534 |
int ret;
|
| 535 |
|
| 536 |
ret = kvm_irqchip_remove_irqfd_notifier(kvm_state, n, irqfd->virq); |
| 537 |
assert(ret == 0);
|
| 538 |
} |
| 539 |
|
| 540 |
static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs) |
| 541 |
{
|
| 542 |
PCIDevice *dev = &proxy->pci_dev; |
| 543 |
VirtIODevice *vdev = proxy->vdev; |
| 544 |
unsigned int vector; |
| 545 |
int ret, queue_no;
|
| 546 |
MSIMessage msg; |
| 547 |
|
| 548 |
for (queue_no = 0; queue_no < nvqs; queue_no++) { |
| 549 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
| 550 |
break;
|
| 551 |
} |
| 552 |
vector = virtio_queue_vector(vdev, queue_no); |
| 553 |
if (vector >= msix_nr_vectors_allocated(dev)) {
|
| 554 |
continue;
|
| 555 |
} |
| 556 |
msg = msix_get_message(dev, vector); |
| 557 |
ret = kvm_virtio_pci_vq_vector_use(proxy, queue_no, vector, msg); |
| 558 |
if (ret < 0) { |
| 559 |
goto undo;
|
| 560 |
} |
| 561 |
/* If guest supports masking, set up irqfd now.
|
| 562 |
* Otherwise, delay until unmasked in the frontend.
|
| 563 |
*/
|
| 564 |
if (proxy->vdev->guest_notifier_mask) {
|
| 565 |
ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); |
| 566 |
if (ret < 0) { |
| 567 |
kvm_virtio_pci_vq_vector_release(proxy, vector); |
| 568 |
goto undo;
|
| 569 |
} |
| 570 |
} |
| 571 |
} |
| 572 |
return 0; |
| 573 |
|
| 574 |
undo:
|
| 575 |
while (--queue_no >= 0) { |
| 576 |
vector = virtio_queue_vector(vdev, queue_no); |
| 577 |
if (vector >= msix_nr_vectors_allocated(dev)) {
|
| 578 |
continue;
|
| 579 |
} |
| 580 |
if (proxy->vdev->guest_notifier_mask) {
|
| 581 |
kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
| 582 |
} |
| 583 |
kvm_virtio_pci_vq_vector_release(proxy, vector); |
| 584 |
} |
| 585 |
return ret;
|
| 586 |
} |
| 587 |
|
| 588 |
static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs) |
| 589 |
{
|
| 590 |
PCIDevice *dev = &proxy->pci_dev; |
| 591 |
VirtIODevice *vdev = proxy->vdev; |
| 592 |
unsigned int vector; |
| 593 |
int queue_no;
|
| 594 |
|
| 595 |
for (queue_no = 0; queue_no < nvqs; queue_no++) { |
| 596 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
| 597 |
break;
|
| 598 |
} |
| 599 |
vector = virtio_queue_vector(vdev, queue_no); |
| 600 |
if (vector >= msix_nr_vectors_allocated(dev)) {
|
| 601 |
continue;
|
| 602 |
} |
| 603 |
/* If guest supports masking, clean up irqfd now.
|
| 604 |
* Otherwise, it was cleaned when masked in the frontend.
|
| 605 |
*/
|
| 606 |
if (proxy->vdev->guest_notifier_mask) {
|
| 607 |
kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
| 608 |
} |
| 609 |
kvm_virtio_pci_vq_vector_release(proxy, vector); |
| 610 |
} |
| 611 |
} |
| 612 |
|
| 613 |
static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy, |
| 614 |
unsigned int queue_no, |
| 615 |
unsigned int vector, |
| 616 |
MSIMessage msg) |
| 617 |
{
|
| 618 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); |
| 619 |
EventNotifier *n = virtio_queue_get_guest_notifier(vq); |
| 620 |
VirtIOIRQFD *irqfd; |
| 621 |
int ret = 0; |
| 622 |
|
| 623 |
if (proxy->vector_irqfd) {
|
| 624 |
irqfd = &proxy->vector_irqfd[vector]; |
| 625 |
if (irqfd->msg.data != msg.data || irqfd->msg.address != msg.address) {
|
| 626 |
ret = kvm_irqchip_update_msi_route(kvm_state, irqfd->virq, msg); |
| 627 |
if (ret < 0) { |
| 628 |
return ret;
|
| 629 |
} |
| 630 |
} |
| 631 |
} |
| 632 |
|
| 633 |
/* If guest supports masking, irqfd is already setup, unmask it.
|
| 634 |
* Otherwise, set it up now.
|
| 635 |
*/
|
| 636 |
if (proxy->vdev->guest_notifier_mask) {
|
| 637 |
proxy->vdev->guest_notifier_mask(proxy->vdev, queue_no, false);
|
| 638 |
/* Test after unmasking to avoid losing events. */
|
| 639 |
if (proxy->vdev->guest_notifier_pending &&
|
| 640 |
proxy->vdev->guest_notifier_pending(proxy->vdev, queue_no)) {
|
| 641 |
event_notifier_set(n); |
| 642 |
} |
| 643 |
} else {
|
| 644 |
ret = kvm_virtio_pci_irqfd_use(proxy, queue_no, vector); |
| 645 |
} |
| 646 |
return ret;
|
| 647 |
} |
| 648 |
|
| 649 |
static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy, |
| 650 |
unsigned int queue_no, |
| 651 |
unsigned int vector) |
| 652 |
{
|
| 653 |
/* If guest supports masking, keep irqfd but mask it.
|
| 654 |
* Otherwise, clean it up now.
|
| 655 |
*/
|
| 656 |
if (proxy->vdev->guest_notifier_mask) {
|
| 657 |
proxy->vdev->guest_notifier_mask(proxy->vdev, queue_no, true);
|
| 658 |
} else {
|
| 659 |
kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); |
| 660 |
} |
| 661 |
} |
| 662 |
|
| 663 |
static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector, |
| 664 |
MSIMessage msg) |
| 665 |
{
|
| 666 |
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
| 667 |
VirtIODevice *vdev = proxy->vdev; |
| 668 |
int ret, queue_no;
|
| 669 |
|
| 670 |
for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
| 671 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
| 672 |
break;
|
| 673 |
} |
| 674 |
if (virtio_queue_vector(vdev, queue_no) != vector) {
|
| 675 |
continue;
|
| 676 |
} |
| 677 |
ret = virtio_pci_vq_vector_unmask(proxy, queue_no, vector, msg); |
| 678 |
if (ret < 0) { |
| 679 |
goto undo;
|
| 680 |
} |
| 681 |
} |
| 682 |
return 0; |
| 683 |
|
| 684 |
undo:
|
| 685 |
while (--queue_no >= 0) { |
| 686 |
if (virtio_queue_vector(vdev, queue_no) != vector) {
|
| 687 |
continue;
|
| 688 |
} |
| 689 |
virtio_pci_vq_vector_mask(proxy, queue_no, vector); |
| 690 |
} |
| 691 |
return ret;
|
| 692 |
} |
| 693 |
|
| 694 |
static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector) |
| 695 |
{
|
| 696 |
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
| 697 |
VirtIODevice *vdev = proxy->vdev; |
| 698 |
int queue_no;
|
| 699 |
|
| 700 |
for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
| 701 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
| 702 |
break;
|
| 703 |
} |
| 704 |
if (virtio_queue_vector(vdev, queue_no) != vector) {
|
| 705 |
continue;
|
| 706 |
} |
| 707 |
virtio_pci_vq_vector_mask(proxy, queue_no, vector); |
| 708 |
} |
| 709 |
} |
| 710 |
|
| 711 |
static void virtio_pci_vector_poll(PCIDevice *dev, |
| 712 |
unsigned int vector_start, |
| 713 |
unsigned int vector_end) |
| 714 |
{
|
| 715 |
VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); |
| 716 |
VirtIODevice *vdev = proxy->vdev; |
| 717 |
int queue_no;
|
| 718 |
unsigned int vector; |
| 719 |
EventNotifier *notifier; |
| 720 |
VirtQueue *vq; |
| 721 |
|
| 722 |
for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { |
| 723 |
if (!virtio_queue_get_num(vdev, queue_no)) {
|
| 724 |
break;
|
| 725 |
} |
| 726 |
vector = virtio_queue_vector(vdev, queue_no); |
| 727 |
if (vector < vector_start || vector >= vector_end ||
|
| 728 |
!msix_is_masked(dev, vector)) {
|
| 729 |
continue;
|
| 730 |
} |
| 731 |
vq = virtio_get_queue(vdev, queue_no); |
| 732 |
notifier = virtio_queue_get_guest_notifier(vq); |
| 733 |
if (vdev->guest_notifier_pending) {
|
| 734 |
if (vdev->guest_notifier_pending(vdev, queue_no)) {
|
| 735 |
msix_set_pending(dev, vector); |
| 736 |
} |
| 737 |
} else if (event_notifier_test_and_clear(notifier)) { |
| 738 |
msix_set_pending(dev, vector); |
| 739 |
} |
| 740 |
} |
| 741 |
} |
| 742 |
|
| 743 |
static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign, |
| 744 |
bool with_irqfd)
|
| 745 |
{
|
| 746 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
| 747 |
VirtQueue *vq = virtio_get_queue(proxy->vdev, n); |
| 748 |
EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); |
| 749 |
|
| 750 |
if (assign) {
|
| 751 |
int r = event_notifier_init(notifier, 0); |
| 752 |
if (r < 0) { |
| 753 |
return r;
|
| 754 |
} |
| 755 |
virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd);
|
| 756 |
} else {
|
| 757 |
virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd);
|
| 758 |
event_notifier_cleanup(notifier); |
| 759 |
} |
| 760 |
|
| 761 |
return 0; |
| 762 |
} |
| 763 |
|
| 764 |
static bool virtio_pci_query_guest_notifiers(DeviceState *d) |
| 765 |
{
|
| 766 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
| 767 |
return msix_enabled(&proxy->pci_dev);
|
| 768 |
} |
| 769 |
|
| 770 |
static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign) |
| 771 |
{
|
| 772 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
| 773 |
VirtIODevice *vdev = proxy->vdev; |
| 774 |
int r, n;
|
| 775 |
bool with_irqfd = msix_enabled(&proxy->pci_dev) &&
|
| 776 |
kvm_msi_via_irqfd_enabled(); |
| 777 |
|
| 778 |
nvqs = MIN(nvqs, VIRTIO_PCI_QUEUE_MAX); |
| 779 |
|
| 780 |
/* When deassigning, pass a consistent nvqs value
|
| 781 |
* to avoid leaking notifiers.
|
| 782 |
*/
|
| 783 |
assert(assign || nvqs == proxy->nvqs_with_notifiers); |
| 784 |
|
| 785 |
proxy->nvqs_with_notifiers = nvqs; |
| 786 |
|
| 787 |
/* Must unset vector notifier while guest notifier is still assigned */
|
| 788 |
if ((proxy->vector_irqfd || vdev->guest_notifier_mask) && !assign) {
|
| 789 |
msix_unset_vector_notifiers(&proxy->pci_dev); |
| 790 |
if (proxy->vector_irqfd) {
|
| 791 |
kvm_virtio_pci_vector_release(proxy, nvqs); |
| 792 |
g_free(proxy->vector_irqfd); |
| 793 |
proxy->vector_irqfd = NULL;
|
| 794 |
} |
| 795 |
} |
| 796 |
|
| 797 |
for (n = 0; n < nvqs; n++) { |
| 798 |
if (!virtio_queue_get_num(vdev, n)) {
|
| 799 |
break;
|
| 800 |
} |
| 801 |
|
| 802 |
r = virtio_pci_set_guest_notifier(d, n, assign, |
| 803 |
kvm_msi_via_irqfd_enabled()); |
| 804 |
if (r < 0) { |
| 805 |
goto assign_error;
|
| 806 |
} |
| 807 |
} |
| 808 |
|
| 809 |
/* Must set vector notifier after guest notifier has been assigned */
|
| 810 |
if ((with_irqfd || vdev->guest_notifier_mask) && assign) {
|
| 811 |
if (with_irqfd) {
|
| 812 |
proxy->vector_irqfd = |
| 813 |
g_malloc0(sizeof(*proxy->vector_irqfd) *
|
| 814 |
msix_nr_vectors_allocated(&proxy->pci_dev)); |
| 815 |
r = kvm_virtio_pci_vector_use(proxy, nvqs); |
| 816 |
if (r < 0) { |
| 817 |
goto assign_error;
|
| 818 |
} |
| 819 |
} |
| 820 |
r = msix_set_vector_notifiers(&proxy->pci_dev, |
| 821 |
virtio_pci_vector_unmask, |
| 822 |
virtio_pci_vector_mask, |
| 823 |
virtio_pci_vector_poll); |
| 824 |
if (r < 0) { |
| 825 |
goto notifiers_error;
|
| 826 |
} |
| 827 |
} |
| 828 |
|
| 829 |
return 0; |
| 830 |
|
| 831 |
notifiers_error:
|
| 832 |
if (with_irqfd) {
|
| 833 |
assert(assign); |
| 834 |
kvm_virtio_pci_vector_release(proxy, nvqs); |
| 835 |
} |
| 836 |
|
| 837 |
assign_error:
|
| 838 |
/* We get here on assignment failure. Recover by undoing for VQs 0 .. n. */
|
| 839 |
assert(assign); |
| 840 |
while (--n >= 0) { |
| 841 |
virtio_pci_set_guest_notifier(d, n, !assign, with_irqfd); |
| 842 |
} |
| 843 |
return r;
|
| 844 |
} |
| 845 |
|
| 846 |
static int virtio_pci_set_host_notifier(DeviceState *d, int n, bool assign) |
| 847 |
{
|
| 848 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
| 849 |
|
| 850 |
/* Stop using ioeventfd for virtqueue kick if the device starts using host
|
| 851 |
* notifiers. This makes it easy to avoid stepping on each others' toes.
|
| 852 |
*/
|
| 853 |
proxy->ioeventfd_disabled = assign; |
| 854 |
if (assign) {
|
| 855 |
virtio_pci_stop_ioeventfd(proxy); |
| 856 |
} |
| 857 |
/* We don't need to start here: it's not needed because backend
|
| 858 |
* currently only stops on status change away from ok,
|
| 859 |
* reset, vmstop and such. If we do add code to start here,
|
| 860 |
* need to check vmstate, device state etc. */
|
| 861 |
return virtio_pci_set_host_notifier_internal(proxy, n, assign, false); |
| 862 |
} |
| 863 |
|
| 864 |
static void virtio_pci_vmstate_change(DeviceState *d, bool running) |
| 865 |
{
|
| 866 |
VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); |
| 867 |
|
| 868 |
if (running) {
|
| 869 |
/* Try to find out if the guest has bus master disabled, but is
|
| 870 |
in ready state. Then we have a buggy guest OS. */
|
| 871 |
if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) &&
|
| 872 |
!(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
|
| 873 |
proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
| 874 |
} |
| 875 |
virtio_pci_start_ioeventfd(proxy); |
| 876 |
} else {
|
| 877 |
virtio_pci_stop_ioeventfd(proxy); |
| 878 |
} |
| 879 |
} |
| 880 |
|
| 881 |
static const VirtIOBindings virtio_pci_bindings = { |
| 882 |
.notify = virtio_pci_notify, |
| 883 |
.save_config = virtio_pci_save_config, |
| 884 |
.load_config = virtio_pci_load_config, |
| 885 |
.save_queue = virtio_pci_save_queue, |
| 886 |
.load_queue = virtio_pci_load_queue, |
| 887 |
.get_features = virtio_pci_get_features, |
| 888 |
.query_guest_notifiers = virtio_pci_query_guest_notifiers, |
| 889 |
.set_host_notifier = virtio_pci_set_host_notifier, |
| 890 |
.set_guest_notifiers = virtio_pci_set_guest_notifiers, |
| 891 |
.vmstate_change = virtio_pci_vmstate_change, |
| 892 |
}; |
| 893 |
|
| 894 |
void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev)
|
| 895 |
{
|
| 896 |
uint8_t *config; |
| 897 |
uint32_t size; |
| 898 |
|
| 899 |
proxy->vdev = vdev; |
| 900 |
|
| 901 |
config = proxy->pci_dev.config; |
| 902 |
|
| 903 |
if (proxy->class_code) {
|
| 904 |
pci_config_set_class(config, proxy->class_code); |
| 905 |
} |
| 906 |
pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
| 907 |
pci_get_word(config + PCI_VENDOR_ID)); |
| 908 |
pci_set_word(config + PCI_SUBSYSTEM_ID, vdev->device_id); |
| 909 |
config[PCI_INTERRUPT_PIN] = 1;
|
| 910 |
|
| 911 |
if (vdev->nvectors &&
|
| 912 |
msix_init_exclusive_bar(&proxy->pci_dev, vdev->nvectors, 1)) {
|
| 913 |
vdev->nvectors = 0;
|
| 914 |
} |
| 915 |
|
| 916 |
proxy->pci_dev.config_write = virtio_write_config; |
| 917 |
|
| 918 |
size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + vdev->config_len; |
| 919 |
if (size & (size-1)) |
| 920 |
size = 1 << qemu_fls(size);
|
| 921 |
|
| 922 |
memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
| 923 |
"virtio-pci", size);
|
| 924 |
pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO,
|
| 925 |
&proxy->bar); |
| 926 |
|
| 927 |
if (!kvm_has_many_ioeventfds()) {
|
| 928 |
proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; |
| 929 |
} |
| 930 |
|
| 931 |
virtio_bind_device(vdev, &virtio_pci_bindings, DEVICE(proxy)); |
| 932 |
proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
| 933 |
proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
| 934 |
proxy->host_features = vdev->get_features(vdev, proxy->host_features); |
| 935 |
} |
| 936 |
|
| 937 |
static void virtio_exit_pci(PCIDevice *pci_dev) |
| 938 |
{
|
| 939 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 940 |
|
| 941 |
memory_region_destroy(&proxy->bar); |
| 942 |
msix_uninit_exclusive_bar(pci_dev); |
| 943 |
} |
| 944 |
|
| 945 |
static int virtio_serial_init_pci(PCIDevice *pci_dev) |
| 946 |
{
|
| 947 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 948 |
VirtIODevice *vdev; |
| 949 |
|
| 950 |
if (proxy->class_code != PCI_CLASS_COMMUNICATION_OTHER &&
|
| 951 |
proxy->class_code != PCI_CLASS_DISPLAY_OTHER && /* qemu 0.10 */
|
| 952 |
proxy->class_code != PCI_CLASS_OTHERS) /* qemu-kvm */
|
| 953 |
proxy->class_code = PCI_CLASS_COMMUNICATION_OTHER; |
| 954 |
|
| 955 |
vdev = virtio_serial_init(&pci_dev->qdev, &proxy->serial); |
| 956 |
if (!vdev) {
|
| 957 |
return -1; |
| 958 |
} |
| 959 |
|
| 960 |
/* backwards-compatibility with machines that were created with
|
| 961 |
DEV_NVECTORS_UNSPECIFIED */
|
| 962 |
vdev->nvectors = proxy->nvectors == DEV_NVECTORS_UNSPECIFIED |
| 963 |
? proxy->serial.max_virtserial_ports + 1
|
| 964 |
: proxy->nvectors; |
| 965 |
virtio_init_pci(proxy, vdev); |
| 966 |
proxy->nvectors = vdev->nvectors; |
| 967 |
return 0; |
| 968 |
} |
| 969 |
|
| 970 |
static void virtio_serial_exit_pci(PCIDevice *pci_dev) |
| 971 |
{
|
| 972 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 973 |
|
| 974 |
virtio_pci_stop_ioeventfd(proxy); |
| 975 |
virtio_serial_exit(proxy->vdev); |
| 976 |
virtio_exit_pci(pci_dev); |
| 977 |
} |
| 978 |
|
| 979 |
static int virtio_net_init_pci(PCIDevice *pci_dev) |
| 980 |
{
|
| 981 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 982 |
VirtIODevice *vdev; |
| 983 |
|
| 984 |
vdev = virtio_net_init(&pci_dev->qdev, &proxy->nic, &proxy->net, |
| 985 |
proxy->host_features); |
| 986 |
|
| 987 |
vdev->nvectors = proxy->nvectors; |
| 988 |
virtio_init_pci(proxy, vdev); |
| 989 |
|
| 990 |
/* make the actual value visible */
|
| 991 |
proxy->nvectors = vdev->nvectors; |
| 992 |
return 0; |
| 993 |
} |
| 994 |
|
| 995 |
static void virtio_net_exit_pci(PCIDevice *pci_dev) |
| 996 |
{
|
| 997 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 998 |
|
| 999 |
virtio_pci_stop_ioeventfd(proxy); |
| 1000 |
virtio_net_exit(proxy->vdev); |
| 1001 |
virtio_exit_pci(pci_dev); |
| 1002 |
} |
| 1003 |
|
| 1004 |
static int virtio_rng_init_pci(PCIDevice *pci_dev) |
| 1005 |
{
|
| 1006 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 1007 |
VirtIODevice *vdev; |
| 1008 |
|
| 1009 |
if (proxy->rng.rng == NULL) { |
| 1010 |
proxy->rng.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM)); |
| 1011 |
|
| 1012 |
object_property_add_child(OBJECT(pci_dev), |
| 1013 |
"default-backend",
|
| 1014 |
OBJECT(proxy->rng.default_backend), |
| 1015 |
NULL);
|
| 1016 |
|
| 1017 |
object_property_set_link(OBJECT(pci_dev), |
| 1018 |
OBJECT(proxy->rng.default_backend), |
| 1019 |
"rng", NULL); |
| 1020 |
} |
| 1021 |
|
| 1022 |
vdev = virtio_rng_init(&pci_dev->qdev, &proxy->rng); |
| 1023 |
if (!vdev) {
|
| 1024 |
return -1; |
| 1025 |
} |
| 1026 |
virtio_init_pci(proxy, vdev); |
| 1027 |
return 0; |
| 1028 |
} |
| 1029 |
|
| 1030 |
static void virtio_rng_exit_pci(PCIDevice *pci_dev) |
| 1031 |
{
|
| 1032 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 1033 |
|
| 1034 |
virtio_pci_stop_ioeventfd(proxy); |
| 1035 |
virtio_rng_exit(proxy->vdev); |
| 1036 |
virtio_exit_pci(pci_dev); |
| 1037 |
} |
| 1038 |
|
| 1039 |
static Property virtio_net_properties[] = {
|
| 1040 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false), |
| 1041 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3), |
| 1042 |
DEFINE_VIRTIO_NET_FEATURES(VirtIOPCIProxy, host_features), |
| 1043 |
DEFINE_NIC_PROPERTIES(VirtIOPCIProxy, nic), |
| 1044 |
DEFINE_PROP_UINT32("x-txtimer", VirtIOPCIProxy, net.txtimer, TX_TIMER_INTERVAL),
|
| 1045 |
DEFINE_PROP_INT32("x-txburst", VirtIOPCIProxy, net.txburst, TX_BURST),
|
| 1046 |
DEFINE_PROP_STRING("tx", VirtIOPCIProxy, net.tx),
|
| 1047 |
DEFINE_PROP_END_OF_LIST(), |
| 1048 |
}; |
| 1049 |
|
| 1050 |
static void virtio_net_class_init(ObjectClass *klass, void *data) |
| 1051 |
{
|
| 1052 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1053 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| 1054 |
|
| 1055 |
k->init = virtio_net_init_pci; |
| 1056 |
k->exit = virtio_net_exit_pci; |
| 1057 |
k->romfile = "efi-virtio.rom";
|
| 1058 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 1059 |
k->device_id = PCI_DEVICE_ID_VIRTIO_NET; |
| 1060 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
| 1061 |
k->class_id = PCI_CLASS_NETWORK_ETHERNET; |
| 1062 |
dc->reset = virtio_pci_reset; |
| 1063 |
dc->props = virtio_net_properties; |
| 1064 |
} |
| 1065 |
|
| 1066 |
static const TypeInfo virtio_net_info = { |
| 1067 |
.name = "virtio-net-pci",
|
| 1068 |
.parent = TYPE_PCI_DEVICE, |
| 1069 |
.instance_size = sizeof(VirtIOPCIProxy),
|
| 1070 |
.class_init = virtio_net_class_init, |
| 1071 |
}; |
| 1072 |
|
| 1073 |
static Property virtio_serial_properties[] = {
|
| 1074 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
| 1075 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
| 1076 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
| 1077 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
| 1078 |
DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, serial.max_virtserial_ports, 31), |
| 1079 |
DEFINE_PROP_END_OF_LIST(), |
| 1080 |
}; |
| 1081 |
|
| 1082 |
static void virtio_serial_class_init(ObjectClass *klass, void *data) |
| 1083 |
{
|
| 1084 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1085 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| 1086 |
|
| 1087 |
k->init = virtio_serial_init_pci; |
| 1088 |
k->exit = virtio_serial_exit_pci; |
| 1089 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 1090 |
k->device_id = PCI_DEVICE_ID_VIRTIO_CONSOLE; |
| 1091 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
| 1092 |
k->class_id = PCI_CLASS_COMMUNICATION_OTHER; |
| 1093 |
dc->reset = virtio_pci_reset; |
| 1094 |
dc->props = virtio_serial_properties; |
| 1095 |
} |
| 1096 |
|
| 1097 |
static const TypeInfo virtio_serial_info = { |
| 1098 |
.name = "virtio-serial-pci",
|
| 1099 |
.parent = TYPE_PCI_DEVICE, |
| 1100 |
.instance_size = sizeof(VirtIOPCIProxy),
|
| 1101 |
.class_init = virtio_serial_class_init, |
| 1102 |
}; |
| 1103 |
|
| 1104 |
static void virtio_rng_initfn(Object *obj) |
| 1105 |
{
|
| 1106 |
PCIDevice *pci_dev = PCI_DEVICE(obj); |
| 1107 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 1108 |
|
| 1109 |
object_property_add_link(obj, "rng", TYPE_RNG_BACKEND,
|
| 1110 |
(Object **)&proxy->rng.rng, NULL);
|
| 1111 |
} |
| 1112 |
|
| 1113 |
static Property virtio_rng_properties[] = {
|
| 1114 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
| 1115 |
/* Set a default rate limit of 2^47 bytes per minute or roughly 2TB/s. If
|
| 1116 |
you have an entropy source capable of generating more entropy than this
|
| 1117 |
and you can pass it through via virtio-rng, then hats off to you. Until
|
| 1118 |
then, this is unlimited for all practical purposes.
|
| 1119 |
*/
|
| 1120 |
DEFINE_PROP_UINT64("max-bytes", VirtIOPCIProxy, rng.max_bytes, INT64_MAX),
|
| 1121 |
DEFINE_PROP_UINT32("period", VirtIOPCIProxy, rng.period_ms, 1 << 16), |
| 1122 |
DEFINE_PROP_END_OF_LIST(), |
| 1123 |
}; |
| 1124 |
|
| 1125 |
static void virtio_rng_class_init(ObjectClass *klass, void *data) |
| 1126 |
{
|
| 1127 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1128 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| 1129 |
|
| 1130 |
k->init = virtio_rng_init_pci; |
| 1131 |
k->exit = virtio_rng_exit_pci; |
| 1132 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 1133 |
k->device_id = PCI_DEVICE_ID_VIRTIO_RNG; |
| 1134 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
| 1135 |
k->class_id = PCI_CLASS_OTHERS; |
| 1136 |
dc->reset = virtio_pci_reset; |
| 1137 |
dc->props = virtio_rng_properties; |
| 1138 |
} |
| 1139 |
|
| 1140 |
static const TypeInfo virtio_rng_info = { |
| 1141 |
.name = "virtio-rng-pci",
|
| 1142 |
.parent = TYPE_PCI_DEVICE, |
| 1143 |
.instance_size = sizeof(VirtIOPCIProxy),
|
| 1144 |
.instance_init = virtio_rng_initfn, |
| 1145 |
.class_init = virtio_rng_class_init, |
| 1146 |
}; |
| 1147 |
|
| 1148 |
#ifdef CONFIG_VIRTFS
|
| 1149 |
static int virtio_9p_init_pci(PCIDevice *pci_dev) |
| 1150 |
{
|
| 1151 |
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); |
| 1152 |
VirtIODevice *vdev; |
| 1153 |
|
| 1154 |
vdev = virtio_9p_init(&pci_dev->qdev, &proxy->fsconf); |
| 1155 |
vdev->nvectors = proxy->nvectors; |
| 1156 |
virtio_init_pci(proxy, vdev); |
| 1157 |
/* make the actual value visible */
|
| 1158 |
proxy->nvectors = vdev->nvectors; |
| 1159 |
return 0; |
| 1160 |
} |
| 1161 |
|
| 1162 |
static Property virtio_9p_properties[] = {
|
| 1163 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), |
| 1164 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
| 1165 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
| 1166 |
DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag),
|
| 1167 |
DEFINE_PROP_STRING("fsdev", VirtIOPCIProxy, fsconf.fsdev_id),
|
| 1168 |
DEFINE_PROP_END_OF_LIST(), |
| 1169 |
}; |
| 1170 |
|
| 1171 |
static void virtio_9p_class_init(ObjectClass *klass, void *data) |
| 1172 |
{
|
| 1173 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1174 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| 1175 |
|
| 1176 |
k->init = virtio_9p_init_pci; |
| 1177 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 1178 |
k->device_id = PCI_DEVICE_ID_VIRTIO_9P; |
| 1179 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
| 1180 |
k->class_id = 0x2;
|
| 1181 |
dc->props = virtio_9p_properties; |
| 1182 |
dc->reset = virtio_pci_reset; |
| 1183 |
} |
| 1184 |
|
| 1185 |
static const TypeInfo virtio_9p_info = { |
| 1186 |
.name = "virtio-9p-pci",
|
| 1187 |
.parent = TYPE_PCI_DEVICE, |
| 1188 |
.instance_size = sizeof(VirtIOPCIProxy),
|
| 1189 |
.class_init = virtio_9p_class_init, |
| 1190 |
}; |
| 1191 |
#endif
|
| 1192 |
|
| 1193 |
/*
|
| 1194 |
* virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
|
| 1195 |
*/
|
| 1196 |
|
| 1197 |
/* This is called by virtio-bus just after the device is plugged. */
|
| 1198 |
static void virtio_pci_device_plugged(DeviceState *d) |
| 1199 |
{
|
| 1200 |
VirtIOPCIProxy *proxy = VIRTIO_PCI(d); |
| 1201 |
VirtioBusState *bus = &proxy->bus; |
| 1202 |
uint8_t *config; |
| 1203 |
uint32_t size; |
| 1204 |
|
| 1205 |
proxy->vdev = bus->vdev; |
| 1206 |
|
| 1207 |
config = proxy->pci_dev.config; |
| 1208 |
if (proxy->class_code) {
|
| 1209 |
pci_config_set_class(config, proxy->class_code); |
| 1210 |
} |
| 1211 |
pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, |
| 1212 |
pci_get_word(config + PCI_VENDOR_ID)); |
| 1213 |
pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_bus_get_vdev_id(bus)); |
| 1214 |
config[PCI_INTERRUPT_PIN] = 1;
|
| 1215 |
|
| 1216 |
if (proxy->nvectors &&
|
| 1217 |
msix_init_exclusive_bar(&proxy->pci_dev, proxy->nvectors, 1)) {
|
| 1218 |
proxy->nvectors = 0;
|
| 1219 |
} |
| 1220 |
|
| 1221 |
proxy->pci_dev.config_write = virtio_write_config; |
| 1222 |
|
| 1223 |
size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) |
| 1224 |
+ virtio_bus_get_vdev_config_len(bus); |
| 1225 |
if (size & (size - 1)) { |
| 1226 |
size = 1 << qemu_fls(size);
|
| 1227 |
} |
| 1228 |
|
| 1229 |
memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, |
| 1230 |
"virtio-pci", size);
|
| 1231 |
pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO,
|
| 1232 |
&proxy->bar); |
| 1233 |
|
| 1234 |
if (!kvm_has_many_ioeventfds()) {
|
| 1235 |
proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; |
| 1236 |
} |
| 1237 |
|
| 1238 |
proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY;
|
| 1239 |
proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE;
|
| 1240 |
proxy->host_features = virtio_bus_get_vdev_features(bus, |
| 1241 |
proxy->host_features); |
| 1242 |
} |
| 1243 |
|
| 1244 |
static int virtio_pci_init(PCIDevice *pci_dev) |
| 1245 |
{
|
| 1246 |
VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev); |
| 1247 |
VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev); |
| 1248 |
virtio_pci_bus_new(&dev->bus, dev); |
| 1249 |
if (k->init != NULL) { |
| 1250 |
return k->init(dev);
|
| 1251 |
} |
| 1252 |
return 0; |
| 1253 |
} |
| 1254 |
|
| 1255 |
static void virtio_pci_exit(PCIDevice *pci_dev) |
| 1256 |
{
|
| 1257 |
VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev); |
| 1258 |
virtio_pci_stop_ioeventfd(proxy); |
| 1259 |
virtio_exit_pci(pci_dev); |
| 1260 |
} |
| 1261 |
|
| 1262 |
/*
|
| 1263 |
* This will be renamed virtio_pci_reset at the end of the series.
|
| 1264 |
* virtio_pci_reset is still in use at this moment.
|
| 1265 |
*/
|
| 1266 |
static void virtio_pci_rst(DeviceState *qdev) |
| 1267 |
{
|
| 1268 |
VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev); |
| 1269 |
VirtioBusState *bus = VIRTIO_BUS(&proxy->bus); |
| 1270 |
virtio_pci_stop_ioeventfd(proxy); |
| 1271 |
virtio_bus_reset(bus); |
| 1272 |
msix_unuse_all_vectors(&proxy->pci_dev); |
| 1273 |
proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; |
| 1274 |
} |
| 1275 |
|
| 1276 |
static void virtio_pci_class_init(ObjectClass *klass, void *data) |
| 1277 |
{
|
| 1278 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1279 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
| 1280 |
|
| 1281 |
k->init = virtio_pci_init; |
| 1282 |
k->exit = virtio_pci_exit; |
| 1283 |
k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 1284 |
k->revision = VIRTIO_PCI_ABI_VERSION; |
| 1285 |
k->class_id = PCI_CLASS_OTHERS; |
| 1286 |
dc->reset = virtio_pci_rst; |
| 1287 |
} |
| 1288 |
|
| 1289 |
static const TypeInfo virtio_pci_info = { |
| 1290 |
.name = TYPE_VIRTIO_PCI, |
| 1291 |
.parent = TYPE_PCI_DEVICE, |
| 1292 |
.instance_size = sizeof(VirtIOPCIProxy),
|
| 1293 |
.class_init = virtio_pci_class_init, |
| 1294 |
.class_size = sizeof(VirtioPCIClass),
|
| 1295 |
.abstract = true,
|
| 1296 |
}; |
| 1297 |
|
| 1298 |
/* virtio-blk-pci */
|
| 1299 |
|
| 1300 |
static Property virtio_blk_pci_properties[] = {
|
| 1301 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
| 1302 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
| 1303 |
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
|
| 1304 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2), |
| 1305 |
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
|
| 1306 |
DEFINE_PROP_BIT("x-data-plane", VirtIOBlkPCI, blk.data_plane, 0, false), |
| 1307 |
#endif
|
| 1308 |
DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features), |
| 1309 |
DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkPCI, blk), |
| 1310 |
DEFINE_PROP_END_OF_LIST(), |
| 1311 |
}; |
| 1312 |
|
| 1313 |
static int virtio_blk_pci_init(VirtIOPCIProxy *vpci_dev) |
| 1314 |
{
|
| 1315 |
VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev); |
| 1316 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 1317 |
virtio_blk_set_conf(vdev, &(dev->blk)); |
| 1318 |
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
| 1319 |
if (qdev_init(vdev) < 0) { |
| 1320 |
return -1; |
| 1321 |
} |
| 1322 |
return 0; |
| 1323 |
} |
| 1324 |
|
| 1325 |
static void virtio_blk_pci_class_init(ObjectClass *klass, void *data) |
| 1326 |
{
|
| 1327 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1328 |
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
| 1329 |
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
| 1330 |
|
| 1331 |
dc->props = virtio_blk_pci_properties; |
| 1332 |
k->init = virtio_blk_pci_init; |
| 1333 |
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 1334 |
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK; |
| 1335 |
pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
| 1336 |
pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
| 1337 |
} |
| 1338 |
|
| 1339 |
static void virtio_blk_pci_instance_init(Object *obj) |
| 1340 |
{
|
| 1341 |
VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj); |
| 1342 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK); |
| 1343 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 1344 |
} |
| 1345 |
|
| 1346 |
static const TypeInfo virtio_blk_pci_info = { |
| 1347 |
.name = TYPE_VIRTIO_BLK_PCI, |
| 1348 |
.parent = TYPE_VIRTIO_PCI, |
| 1349 |
.instance_size = sizeof(VirtIOBlkPCI),
|
| 1350 |
.instance_init = virtio_blk_pci_instance_init, |
| 1351 |
.class_init = virtio_blk_pci_class_init, |
| 1352 |
}; |
| 1353 |
|
| 1354 |
/* virtio-scsi-pci */
|
| 1355 |
|
| 1356 |
static Property virtio_scsi_pci_properties[] = {
|
| 1357 |
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
|
| 1358 |
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
|
| 1359 |
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
|
| 1360 |
DEV_NVECTORS_UNSPECIFIED), |
| 1361 |
DEFINE_VIRTIO_SCSI_FEATURES(VirtIOPCIProxy, host_features), |
| 1362 |
DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSIPCI, vdev.conf), |
| 1363 |
DEFINE_PROP_END_OF_LIST(), |
| 1364 |
}; |
| 1365 |
|
| 1366 |
static int virtio_scsi_pci_init_pci(VirtIOPCIProxy *vpci_dev) |
| 1367 |
{
|
| 1368 |
VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev); |
| 1369 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 1370 |
|
| 1371 |
if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
|
| 1372 |
vpci_dev->nvectors = dev->vdev.conf.num_queues + 3;
|
| 1373 |
} |
| 1374 |
|
| 1375 |
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
| 1376 |
if (qdev_init(vdev) < 0) { |
| 1377 |
return -1; |
| 1378 |
} |
| 1379 |
return 0; |
| 1380 |
} |
| 1381 |
|
| 1382 |
static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data) |
| 1383 |
{
|
| 1384 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1385 |
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
| 1386 |
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
| 1387 |
k->init = virtio_scsi_pci_init_pci; |
| 1388 |
dc->props = virtio_scsi_pci_properties; |
| 1389 |
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 1390 |
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; |
| 1391 |
pcidev_k->revision = 0x00;
|
| 1392 |
pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; |
| 1393 |
} |
| 1394 |
|
| 1395 |
static void virtio_scsi_pci_instance_init(Object *obj) |
| 1396 |
{
|
| 1397 |
VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj); |
| 1398 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_SCSI); |
| 1399 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 1400 |
} |
| 1401 |
|
| 1402 |
static const TypeInfo virtio_scsi_pci_info = { |
| 1403 |
.name = TYPE_VIRTIO_SCSI_PCI, |
| 1404 |
.parent = TYPE_VIRTIO_PCI, |
| 1405 |
.instance_size = sizeof(VirtIOSCSIPCI),
|
| 1406 |
.instance_init = virtio_scsi_pci_instance_init, |
| 1407 |
.class_init = virtio_scsi_pci_class_init, |
| 1408 |
}; |
| 1409 |
|
| 1410 |
/* virtio-balloon-pci */
|
| 1411 |
|
| 1412 |
static Property virtio_balloon_pci_properties[] = {
|
| 1413 |
DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features), |
| 1414 |
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0), |
| 1415 |
DEFINE_PROP_END_OF_LIST(), |
| 1416 |
}; |
| 1417 |
|
| 1418 |
static int virtio_balloon_pci_init(VirtIOPCIProxy *vpci_dev) |
| 1419 |
{
|
| 1420 |
VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(vpci_dev); |
| 1421 |
DeviceState *vdev = DEVICE(&dev->vdev); |
| 1422 |
|
| 1423 |
if (vpci_dev->class_code != PCI_CLASS_OTHERS &&
|
| 1424 |
vpci_dev->class_code != PCI_CLASS_MEMORY_RAM) { /* qemu < 1.1 */
|
| 1425 |
vpci_dev->class_code = PCI_CLASS_OTHERS; |
| 1426 |
} |
| 1427 |
|
| 1428 |
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); |
| 1429 |
if (qdev_init(vdev) < 0) { |
| 1430 |
return -1; |
| 1431 |
} |
| 1432 |
return 0; |
| 1433 |
} |
| 1434 |
|
| 1435 |
static void virtio_balloon_pci_class_init(ObjectClass *klass, void *data) |
| 1436 |
{
|
| 1437 |
DeviceClass *dc = DEVICE_CLASS(klass); |
| 1438 |
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
| 1439 |
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
| 1440 |
k->init = virtio_balloon_pci_init; |
| 1441 |
dc->props = virtio_balloon_pci_properties; |
| 1442 |
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 1443 |
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BALLOON; |
| 1444 |
pcidev_k->revision = VIRTIO_PCI_ABI_VERSION; |
| 1445 |
pcidev_k->class_id = PCI_CLASS_OTHERS; |
| 1446 |
} |
| 1447 |
|
| 1448 |
static void virtio_balloon_pci_instance_init(Object *obj) |
| 1449 |
{
|
| 1450 |
VirtIOBalloonPCI *dev = VIRTIO_BALLOON_PCI(obj); |
| 1451 |
object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BALLOON); |
| 1452 |
object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL); |
| 1453 |
} |
| 1454 |
|
| 1455 |
static const TypeInfo virtio_balloon_pci_info = { |
| 1456 |
.name = TYPE_VIRTIO_BALLOON_PCI, |
| 1457 |
.parent = TYPE_VIRTIO_PCI, |
| 1458 |
.instance_size = sizeof(VirtIOBalloonPCI),
|
| 1459 |
.instance_init = virtio_balloon_pci_instance_init, |
| 1460 |
.class_init = virtio_balloon_pci_class_init, |
| 1461 |
}; |
| 1462 |
|
| 1463 |
/* virtio-pci-bus */
|
| 1464 |
|
| 1465 |
void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
|
| 1466 |
{
|
| 1467 |
DeviceState *qdev = DEVICE(dev); |
| 1468 |
BusState *qbus; |
| 1469 |
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_PCI_BUS, qdev, NULL);
|
| 1470 |
qbus = BUS(bus); |
| 1471 |
qbus->allow_hotplug = 1;
|
| 1472 |
} |
| 1473 |
|
| 1474 |
static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) |
| 1475 |
{
|
| 1476 |
BusClass *bus_class = BUS_CLASS(klass); |
| 1477 |
VirtioBusClass *k = VIRTIO_BUS_CLASS(klass); |
| 1478 |
bus_class->max_dev = 1;
|
| 1479 |
k->notify = virtio_pci_notify; |
| 1480 |
k->save_config = virtio_pci_save_config; |
| 1481 |
k->load_config = virtio_pci_load_config; |
| 1482 |
k->save_queue = virtio_pci_save_queue; |
| 1483 |
k->load_queue = virtio_pci_load_queue; |
| 1484 |
k->get_features = virtio_pci_get_features; |
| 1485 |
k->query_guest_notifiers = virtio_pci_query_guest_notifiers; |
| 1486 |
k->set_host_notifier = virtio_pci_set_host_notifier; |
| 1487 |
k->set_guest_notifiers = virtio_pci_set_guest_notifiers; |
| 1488 |
k->vmstate_change = virtio_pci_vmstate_change; |
| 1489 |
k->device_plugged = virtio_pci_device_plugged; |
| 1490 |
} |
| 1491 |
|
| 1492 |
static const TypeInfo virtio_pci_bus_info = { |
| 1493 |
.name = TYPE_VIRTIO_PCI_BUS, |
| 1494 |
.parent = TYPE_VIRTIO_BUS, |
| 1495 |
.instance_size = sizeof(VirtioPCIBusState),
|
| 1496 |
.class_init = virtio_pci_bus_class_init, |
| 1497 |
}; |
| 1498 |
|
| 1499 |
static void virtio_pci_register_types(void) |
| 1500 |
{
|
| 1501 |
type_register_static(&virtio_net_info); |
| 1502 |
type_register_static(&virtio_serial_info); |
| 1503 |
type_register_static(&virtio_rng_info); |
| 1504 |
type_register_static(&virtio_pci_bus_info); |
| 1505 |
type_register_static(&virtio_pci_info); |
| 1506 |
#ifdef CONFIG_VIRTFS
|
| 1507 |
type_register_static(&virtio_9p_info); |
| 1508 |
#endif
|
| 1509 |
type_register_static(&virtio_blk_pci_info); |
| 1510 |
type_register_static(&virtio_scsi_pci_info); |
| 1511 |
type_register_static(&virtio_balloon_pci_info); |
| 1512 |
} |
| 1513 |
|
| 1514 |
type_init(virtio_pci_register_types) |