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38 * determine if VFIO is present on the system
41 #include <linux/version.h>
42 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
43 #include <linux/vfio.h>
45 #define RTE_VFIO_TYPE1 VFIO_TYPE1_IOMMU
47 #ifndef VFIO_SPAPR_TCE_v2_IOMMU
48 #define RTE_VFIO_SPAPR 7
49 #define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17)
50 #define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19)
51 #define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)
53 struct vfio_iommu_spapr_register_memory {
60 struct vfio_iommu_spapr_tce_create {
73 struct vfio_iommu_spapr_tce_remove {
80 struct vfio_iommu_spapr_tce_ddw_info {
82 uint32_t max_dynamic_windows_supported;
86 /* SPAPR_v2 is not present, but SPAPR might be */
87 #ifndef VFIO_SPAPR_TCE_IOMMU
88 #define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
90 struct vfio_iommu_spapr_tce_info {
93 uint32_t dma32_window_start;
94 uint32_t dma32_window_size;
95 struct vfio_iommu_spapr_tce_ddw_info ddw;
97 #endif /* VFIO_SPAPR_TCE_IOMMU */
99 #else /* VFIO_SPAPR_TCE_v2_IOMMU */
100 #define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU
103 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
104 #define RTE_VFIO_NOIOMMU 8
106 #define RTE_VFIO_NOIOMMU VFIO_NOIOMMU_IOMMU
109 #define VFIO_MAX_GROUPS 64
112 * Function prototypes for VFIO multiprocess sync functions
114 int vfio_mp_sync_send_request(int socket, int req);
115 int vfio_mp_sync_receive_request(int socket);
116 int vfio_mp_sync_send_fd(int socket, int fd);
117 int vfio_mp_sync_receive_fd(int socket);
118 int vfio_mp_sync_connect_to_primary(void);
121 * we don't need to store device fd's anywhere since they can be obtained from
122 * the group fd via an ioctl() call.
132 int vfio_container_fd;
133 int vfio_active_groups;
134 struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
137 /* DMA mapping function prototype.
138 * Takes VFIO container fd as a parameter.
139 * Returns 0 on success, -1 on error.
141 typedef int (*vfio_dma_func_t)(int);
143 struct vfio_iommu_type {
146 vfio_dma_func_t dma_map_func;
149 /* pick IOMMU type. returns a pointer to vfio_iommu_type or NULL for error */
150 const struct vfio_iommu_type *
151 vfio_set_iommu_type(int vfio_container_fd);
153 /* check if we have any supported extensions */
155 vfio_has_supported_extensions(int vfio_container_fd);
157 /* open container fd or get an existing one */
159 vfio_get_container_fd(void);
161 /* parse IOMMU group number for a device
162 * returns 1 on success, -1 for errors, 0 for non-existent group
165 vfio_get_group_no(const char *sysfs_base,
166 const char *dev_addr, int *iommu_group_no);
168 /* open group fd or get an existing one */
170 vfio_get_group_fd(int iommu_group_no);
172 /* remove group fd from internal VFIO group fd array */
174 clear_group(int vfio_group_fd);
176 int vfio_mp_sync_setup(void);
178 #define SOCKET_REQ_CONTAINER 0x100
179 #define SOCKET_REQ_GROUP 0x200
180 #define SOCKET_CLR_GROUP 0x300
181 #define SOCKET_OK 0x0
182 #define SOCKET_NO_FD 0x1
183 #define SOCKET_ERR 0xFF
186 #endif /* kernel version */
187 #endif /* RTE_EAL_VFIO */
189 #endif /* EAL_VFIO_H_ */