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 87