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38 * determine if VFIO is present on the system
40 #if !defined(VFIO_PRESENT) && defined(RTE_EAL_VFIO)
41 #include <linux/version.h>
42 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
45 #pragma message("VFIO configured but not supported by this kernel, disabling.")
46 #endif /* kernel version >= 3.6.0 */
47 #endif /* RTE_EAL_VFIO */
51 #include <linux/vfio.h>
53 #define RTE_VFIO_TYPE1 VFIO_TYPE1_IOMMU
55 #ifndef VFIO_SPAPR_TCE_v2_IOMMU
56 #define RTE_VFIO_SPAPR 7
57 #define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17)
58 #define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19)
59 #define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)
61 struct vfio_iommu_spapr_register_memory {
68 struct vfio_iommu_spapr_tce_create {
81 struct vfio_iommu_spapr_tce_remove {
88 struct vfio_iommu_spapr_tce_ddw_info {
90 uint32_t max_dynamic_windows_supported;
94 /* SPAPR_v2 is not present, but SPAPR might be */
95 #ifndef VFIO_SPAPR_TCE_IOMMU
96 #define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
98 struct vfio_iommu_spapr_tce_info {
101 uint32_t dma32_window_start;
102 uint32_t dma32_window_size;
103 struct vfio_iommu_spapr_tce_ddw_info ddw;
105 #endif /* VFIO_SPAPR_TCE_IOMMU */
107 #else /* VFIO_SPAPR_TCE_v2_IOMMU */
108 #define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU
111 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
112 #define RTE_VFIO_NOIOMMU 8
114 #define RTE_VFIO_NOIOMMU VFIO_NOIOMMU_IOMMU
117 #define VFIO_MAX_GROUPS 64
120 * Function prototypes for VFIO multiprocess sync functions
122 int vfio_mp_sync_send_request(int socket, int req);
123 int vfio_mp_sync_receive_request(int socket);
124 int vfio_mp_sync_send_fd(int socket, int fd);
125 int vfio_mp_sync_receive_fd(int socket);
126 int vfio_mp_sync_connect_to_primary(void);
129 * we don't need to store device fd's anywhere since they can be obtained from
130 * the group fd via an ioctl() call.
140 int vfio_container_fd;
141 int vfio_active_groups;
142 struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
145 /* DMA mapping function prototype.
146 * Takes VFIO container fd as a parameter.
147 * Returns 0 on success, -1 on error.
149 typedef int (*vfio_dma_func_t)(int);
151 struct vfio_iommu_type {
154 vfio_dma_func_t dma_map_func;
157 /* pick IOMMU type. returns a pointer to vfio_iommu_type or NULL for error */
158 const struct vfio_iommu_type *
159 vfio_set_iommu_type(int vfio_container_fd);
161 /* check if we have any supported extensions */
163 vfio_has_supported_extensions(int vfio_container_fd);
165 /* open container fd or get an existing one */
167 vfio_get_container_fd(void);
169 /* parse IOMMU group number for a device
170 * returns 1 on success, -1 for errors, 0 for non-existent group
173 vfio_get_group_no(const char *sysfs_base,
174 const char *dev_addr, int *iommu_group_no);
176 /* open group fd or get an existing one */
178 vfio_get_group_fd(int iommu_group_no);
180 /* remove group fd from internal VFIO group fd array */
182 clear_group(int vfio_group_fd);
184 int vfio_mp_sync_setup(void);
186 #define SOCKET_REQ_CONTAINER 0x100
187 #define SOCKET_REQ_GROUP 0x200
188 #define SOCKET_CLR_GROUP 0x300
189 #define SOCKET_OK 0x0
190 #define SOCKET_NO_FD 0x1
191 #define SOCKET_ERR 0xFF
193 #endif /* VFIO_PRESENT */
195 #endif /* EAL_VFIO_H_ */