| 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 | |
| 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 |