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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);
57 int pci_uio_ioport_map(struct rte_pci_device *dev, int bar,
58 struct rte_pci_ioport *p);
59 void pci_uio_ioport_read(struct rte_pci_ioport *p,
60 void *data, size_t len, off_t offset);
61 void pci_uio_ioport_write(struct rte_pci_ioport *p,
62 const void *data, size_t len, off_t offset);
63 int pci_uio_ioport_unmap(struct rte_pci_ioport *p);
67 #define VFIO_MAX_GROUPS 64
69 int pci_vfio_enable(void);
70 int pci_vfio_is_enabled(void);
71 int pci_vfio_mp_sync_setup(void);
73 /* access config space */
74 int pci_vfio_read_config(const struct rte_intr_handle *intr_handle,
75 void *buf, size_t len, off_t offs);
76 int pci_vfio_write_config(const struct rte_intr_handle *intr_handle,
77 const void *buf, size_t len, off_t offs);
79 int pci_vfio_ioport_map(struct rte_pci_device *dev, int bar,
80 struct rte_pci_ioport *p);
81 void pci_vfio_ioport_read(struct rte_pci_ioport *p,
82 void *data, size_t len, off_t offset);
83 void pci_vfio_ioport_write(struct rte_pci_ioport *p,
84 const void *data, size_t len, off_t offset);
85 int pci_vfio_ioport_unmap(struct rte_pci_ioport *p);
87 /* map VFIO resource prototype */
88 int pci_vfio_map_resource(struct rte_pci_device *dev);
89 int pci_vfio_get_group_fd(int iommu_group_fd);
90 int pci_vfio_get_container_fd(void);
93 * Function prototypes for VFIO multiprocess sync functions
95 int vfio_mp_sync_send_request(int socket, int req);
96 int vfio_mp_sync_receive_request(int socket);
97 int vfio_mp_sync_send_fd(int socket, int fd);
98 int vfio_mp_sync_receive_fd(int socket);
99 int vfio_mp_sync_connect_to_primary(void);
101 /* socket comm protocol definitions */
102 #define SOCKET_REQ_CONTAINER 0x100
103 #define SOCKET_REQ_GROUP 0x200
104 #define SOCKET_OK 0x0
105 #define SOCKET_NO_FD 0x1
106 #define SOCKET_ERR 0xFF
109 * we don't need to store device fd's anywhere since they can be obtained from
110 * the group fd via an ioctl() call.
119 int vfio_container_fd;
120 int vfio_container_has_dma;
122 struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
127 #endif /* EAL_PCI_INIT_H_ */