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34 #ifndef EAL_PCI_INIT_H_
35 #define EAL_PCI_INIT_H_
40 * Helper function to map PCI resources right after hugepages in virtual memory
42 extern void *pci_map_addr;
43 void *pci_find_max_end_va(void);
45 int pci_uio_alloc_resource(struct rte_pci_device *dev,
46 struct mapped_pci_resource **uio_res);
47 void pci_uio_free_resource(struct rte_pci_device *dev,
48 struct mapped_pci_resource *uio_res);
49 int pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx,
50 struct mapped_pci_resource *uio_res, int map_idx);
52 int pci_uio_read_config(const struct rte_intr_handle *intr_handle,
53 void *buf, size_t len, off_t offs);
54 int pci_uio_write_config(const struct rte_intr_handle *intr_handle,
55 const void *buf, size_t len, off_t offs);
59 #define VFIO_MAX_GROUPS 64
61 int pci_vfio_enable(void);
62 int pci_vfio_is_enabled(void);
63 int pci_vfio_mp_sync_setup(void);
65 /* access config space */
66 int pci_vfio_read_config(const struct rte_intr_handle *intr_handle,
67 void *buf, size_t len, off_t offs);
68 int pci_vfio_write_config(const struct rte_intr_handle *intr_handle,
69 const void *buf, size_t len, off_t offs);
71 /* map VFIO resource prototype */
72 int pci_vfio_map_resource(struct rte_pci_device *dev);
73 int pci_vfio_get_group_fd(int iommu_group_fd);
74 int pci_vfio_get_container_fd(void);
77 * Function prototypes for VFIO multiprocess sync functions
79 int vfio_mp_sync_send_request(int socket, int req);
80 int vfio_mp_sync_receive_request(int socket);
81 int vfio_mp_sync_send_fd(int socket, int fd);
82 int vfio_mp_sync_receive_fd(int socket);
83 int vfio_mp_sync_connect_to_primary(void);
85 /* socket comm protocol definitions */
86 #define SOCKET_REQ_CONTAINER 0x100
87 #define SOCKET_REQ_GROUP 0x200
89 #define SOCKET_NO_FD 0x1
90 #define SOCKET_ERR 0xFF
93 * we don't need to store device fd's anywhere since they can be obtained from
94 * the group fd via an ioctl() call.
103 int vfio_container_fd;
104 int vfio_container_has_dma;
106 struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
111 #endif /* EAL_PCI_INIT_H_ */