vfio: DMA mapping

[dpdk.git] / lib / librte_eal / linuxapp / eal / include / eal_pci_init.h

diff --git a/lib/librte_eal/linuxapp/eal/include/eal_pci_init.h b/lib/librte_eal/linuxapp/eal/include/eal_pci_init.h
index 87bdfe7..59a7e79 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/include/eal_pci_init.h
+++ b/lib/librte_eal/linuxapp/eal/include/eal_pci_init.h
@@ -34,6 +34,8 @@
 #ifndef EAL_PCI_INIT_H_
 #define EAL_PCI_INIT_H_
 
+#include "eal_vfio.h"
+
 struct pci_map {
        void *addr;
        uint64_t offset;
@@ -63,4 +65,33 @@ void *pci_map_resource(void *requested_addr, int fd, off_t offset,
 /* map IGB_UIO resource prototype */
 int pci_uio_map_resource(struct rte_pci_device *dev);
 
+#ifdef VFIO_PRESENT
+
+#define VFIO_MAX_GROUPS 64
+
+int pci_vfio_enable(void);
+int pci_vfio_is_enabled(void);
+
+/* map VFIO resource prototype */
+int pci_vfio_map_resource(struct rte_pci_device *dev);
+
+/*
+ * we don't need to store device fd's anywhere since they can be obtained from
+ * the group fd via an ioctl() call.
+ */
+struct vfio_group {
+       int group_no;
+       int fd;
+};
+
+struct vfio_config {
+       int vfio_enabled;
+       int vfio_container_fd;
+       int vfio_container_has_dma;
+       int vfio_group_idx;
+       struct vfio_group vfio_groups[VFIO_MAX_GROUPS];
+};
+
+#endif
+
 #endif /* EAL_PCI_INIT_H_ */