1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
9 * determine if VFIO is present on the system
11 #if !defined(VFIO_PRESENT) && defined(RTE_EAL_VFIO)
12 #include <linux/version.h>
13 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
16 #pragma message("VFIO configured but not supported by this kernel, disabling.")
17 #endif /* kernel version >= 3.6.0 */
18 #endif /* RTE_EAL_VFIO */
22 #include <linux/vfio.h>
24 #define RTE_VFIO_TYPE1 VFIO_TYPE1_IOMMU
26 #ifndef VFIO_SPAPR_TCE_v2_IOMMU
27 #define RTE_VFIO_SPAPR 7
28 #define VFIO_IOMMU_SPAPR_REGISTER_MEMORY _IO(VFIO_TYPE, VFIO_BASE + 17)
29 #define VFIO_IOMMU_SPAPR_TCE_CREATE _IO(VFIO_TYPE, VFIO_BASE + 19)
30 #define VFIO_IOMMU_SPAPR_TCE_REMOVE _IO(VFIO_TYPE, VFIO_BASE + 20)
32 struct vfio_iommu_spapr_register_memory {
39 struct vfio_iommu_spapr_tce_create {
52 struct vfio_iommu_spapr_tce_remove {
59 struct vfio_iommu_spapr_tce_ddw_info {
61 uint32_t max_dynamic_windows_supported;
65 /* SPAPR_v2 is not present, but SPAPR might be */
66 #ifndef VFIO_SPAPR_TCE_IOMMU
67 #define VFIO_IOMMU_SPAPR_TCE_GET_INFO _IO(VFIO_TYPE, VFIO_BASE + 12)
69 struct vfio_iommu_spapr_tce_info {
72 uint32_t dma32_window_start;
73 uint32_t dma32_window_size;
74 struct vfio_iommu_spapr_tce_ddw_info ddw;
76 #endif /* VFIO_SPAPR_TCE_IOMMU */
78 #else /* VFIO_SPAPR_TCE_v2_IOMMU */
79 #define RTE_VFIO_SPAPR VFIO_SPAPR_TCE_v2_IOMMU
82 #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
83 #define RTE_VFIO_NOIOMMU 8
85 #define RTE_VFIO_NOIOMMU VFIO_NOIOMMU_IOMMU
88 #define VFIO_MAX_GROUPS RTE_MAX_VFIO_GROUPS
91 * Function prototypes for VFIO multiprocess sync functions
93 int vfio_mp_sync_send_request(int socket, int req);
94 int vfio_mp_sync_receive_request(int socket);
95 int vfio_mp_sync_send_fd(int socket, int fd);
96 int vfio_mp_sync_receive_fd(int socket);
97 int vfio_mp_sync_connect_to_primary(void);
100 * we don't need to store device fd's anywhere since they can be obtained from
101 * the group fd via an ioctl() call.
111 int vfio_container_fd;
112 int vfio_active_groups;
113 struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
116 /* DMA mapping function prototype.
117 * Takes VFIO container fd as a parameter.
118 * Returns 0 on success, -1 on error.
120 typedef int (*vfio_dma_func_t)(int);
122 struct vfio_iommu_type {
125 vfio_dma_func_t dma_map_func;
128 /* pick IOMMU type. returns a pointer to vfio_iommu_type or NULL for error */
129 const struct vfio_iommu_type *
130 vfio_set_iommu_type(int vfio_container_fd);
132 /* check if we have any supported extensions */
134 vfio_has_supported_extensions(int vfio_container_fd);
136 /* open container fd or get an existing one */
138 vfio_get_container_fd(void);
140 /* parse IOMMU group number for a device
141 * returns 1 on success, -1 for errors, 0 for non-existent group
144 vfio_get_group_no(const char *sysfs_base,
145 const char *dev_addr, int *iommu_group_no);
147 /* open group fd or get an existing one */
149 vfio_get_group_fd(int iommu_group_no);
151 int vfio_mp_sync_setup(void);
153 #define SOCKET_REQ_CONTAINER 0x100
154 #define SOCKET_REQ_GROUP 0x200
155 #define SOCKET_CLR_GROUP 0x300
156 #define SOCKET_OK 0x0
157 #define SOCKET_NO_FD 0x1
158 #define SOCKET_ERR 0xFF
160 #endif /* VFIO_PRESENT */
162 #endif /* EAL_VFIO_H_ */