LXR qemu/tests/qtest/libqos/virtio-pci.h

   1/*
   2 * libqos virtio PCI definitions
   3 *
   4 * Copyright (c) 2014 Marc Marí
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7 * See the COPYING file in the top-level directory.
   8 */
   9
  10#ifndef LIBQOS_VIRTIO_PCI_H
  11#define LIBQOS_VIRTIO_PCI_H
  12
  13#include "virtio.h"
  14#include "pci.h"
  15#include "qgraph.h"
  16
  17typedef struct QVirtioPCIMSIXOps QVirtioPCIMSIXOps;
  18
  19typedef struct QVirtioPCIDevice {
  20    QOSGraphObject obj;
  21    QVirtioDevice vdev;
  22    QPCIDevice *pdev;
  23    QPCIBar bar;
  24    const QVirtioPCIMSIXOps *msix_ops;
  25    uint16_t config_msix_entry;
  26    uint64_t config_msix_addr;
  27    uint32_t config_msix_data;
  28
  29    int bar_idx;
  30
  31    /* VIRTIO 1.0 */
  32    uint32_t common_cfg_offset;
  33    uint32_t notify_cfg_offset;
  34    uint32_t notify_off_multiplier;
  35    uint32_t isr_cfg_offset;
  36    uint32_t device_cfg_offset;
  37} QVirtioPCIDevice;
  38
  39struct QVirtioPCIMSIXOps {
  40    /* Set the Configuration Vector for MSI-X */
  41    void (*set_config_vector)(QVirtioPCIDevice *d, uint16_t entry);
  42
  43    /* Set the Queue Vector for MSI-X */
  44    void (*set_queue_vector)(QVirtioPCIDevice *d, uint16_t vq_idx,
  45                             uint16_t entry);
  46};
  47
  48typedef struct QVirtQueuePCI {
  49    QVirtQueue vq;
  50    uint16_t msix_entry;
  51    uint64_t msix_addr;
  52    uint32_t msix_data;
  53
  54    /* VIRTIO 1.0 */
  55    uint64_t notify_offset;
  56} QVirtQueuePCI;
  57
  58void virtio_pci_init(QVirtioPCIDevice *dev, QPCIBus *bus, QPCIAddress * addr);
  59QVirtioPCIDevice *virtio_pci_new(QPCIBus *bus, QPCIAddress * addr);
  60
  61/* virtio-pci object functions available for subclasses that
  62 * override the original start_hw and destroy
  63 * function. All virtio-xxx-pci subclass that override must
  64 * take care of calling these two functions in the respective
  65 * places
  66 */
  67void qvirtio_pci_destructor(QOSGraphObject *obj);
  68void qvirtio_pci_start_hw(QOSGraphObject *obj);
  69
  70
  71void qvirtio_pci_device_enable(QVirtioPCIDevice *d);
  72void qvirtio_pci_device_disable(QVirtioPCIDevice *d);
  73
  74void qvirtio_pci_set_msix_configuration_vector(QVirtioPCIDevice *d,
  75                                        QGuestAllocator *alloc, uint16_t entry);
  76void qvirtqueue_pci_msix_setup(QVirtioPCIDevice *d, QVirtQueuePCI *vqpci,
  77                                        QGuestAllocator *alloc, uint16_t entry);
  78
  79/* Used by Legacy and Modern virtio-pci code */
  80QVirtQueue *qvirtio_pci_virtqueue_setup_common(QVirtioDevice *d,
  81                                               QGuestAllocator *alloc,
  82                                               uint16_t index);
  83void qvirtio_pci_virtqueue_cleanup_common(QVirtQueue *vq,
  84                                          QGuestAllocator *alloc);
  85
  86#endif
  87