tests/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 "libqos/virtio.h"
  14 #include "libqos/pci.h"
  15 #include "libqos/qgraph.h"
  16
  17 typedef struct QVirtioPCIMSIXOps QVirtioPCIMSIXOps;
  18
  19 typedef 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
  39 struct 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
  48 typedef 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
  58 void virtio_pci_init(QVirtioPCIDevice *dev, QPCIBus *bus, QPCIAddress * addr);
  59 QVirtioPCIDevice *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  */
  67 void qvirtio_pci_destructor(QOSGraphObject *obj);
  68 void qvirtio_pci_start_hw(QOSGraphObject *obj);
  69
  70
  71 void qvirtio_pci_device_enable(QVirtioPCIDevice *d);
  72 void qvirtio_pci_device_disable(QVirtioPCIDevice *d);
  73
  74 void qvirtio_pci_set_msix_configuration_vector(QVirtioPCIDevice *d,
  75                                         QGuestAllocator *alloc, uint16_t entry);
  76 void qvirtqueue_pci_msix_setup(QVirtioPCIDevice *d, QVirtQueuePCI *vqpci,
  77                                         QGuestAllocator *alloc, uint16_t entry);
  78
  79 /* Used by Legacy and Modern virtio-pci code */
  80 QVirtQueue *qvirtio_pci_virtqueue_setup_common(QVirtioDevice *d,
  81                                                QGuestAllocator *alloc,
  82                                                uint16_t index);
  83 void qvirtio_pci_virtqueue_cleanup_common(QVirtQueue *vq,
  84                                           QGuestAllocator *alloc);
  85
  86 #endif