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 } QVirtioPCIDevice; 29 30 struct QVirtioPCIMSIXOps { 31 /* Set the Configuration Vector for MSI-X */ 32 void (*set_config_vector)(QVirtioPCIDevice *d, uint16_t entry); 33 34 /* Set the Queue Vector for MSI-X */ 35 void (*set_queue_vector)(QVirtioPCIDevice *d, uint16_t vq_idx, 36 uint16_t entry); 37 }; 38 39 typedef struct QVirtQueuePCI { 40 QVirtQueue vq; 41 uint16_t msix_entry; 42 uint64_t msix_addr; 43 uint32_t msix_data; 44 } QVirtQueuePCI; 45 46 extern const QVirtioBus qvirtio_pci; 47 48 void virtio_pci_init(QVirtioPCIDevice *dev, QPCIBus *bus, QPCIAddress * addr); 49 QVirtioPCIDevice *virtio_pci_new(QPCIBus *bus, QPCIAddress * addr); 50 51 /* virtio-pci object functions available for subclasses that 52 * override the original start_hw and destroy 53 * function. All virtio-xxx-pci subclass that override must 54 * take care of calling these two functions in the respective 55 * places 56 */ 57 void qvirtio_pci_destructor(QOSGraphObject *obj); 58 void qvirtio_pci_start_hw(QOSGraphObject *obj); 59 60 61 void qvirtio_pci_device_enable(QVirtioPCIDevice *d); 62 void qvirtio_pci_device_disable(QVirtioPCIDevice *d); 63 64 void qvirtio_pci_set_msix_configuration_vector(QVirtioPCIDevice *d, 65 QGuestAllocator *alloc, uint16_t entry); 66 void qvirtqueue_pci_msix_setup(QVirtioPCIDevice *d, QVirtQueuePCI *vqpci, 67 QGuestAllocator *alloc, uint16_t entry); 68 69 /* Used by Legacy and Modern virtio-pci code */ 70 QVirtQueue *qvirtio_pci_virtqueue_setup_common(QVirtioDevice *d, 71 QGuestAllocator *alloc, 72 uint16_t index); 73 void qvirtio_pci_virtqueue_cleanup_common(QVirtQueue *vq, 74 QGuestAllocator *alloc); 75 76 #endif 77