vlib: vfio code rework

Change-Id: I99cf3e7cc991aa7d32385a155c707a6516516117
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/src/vlib/linux/vfio.h b/src/vlib/linux/vfio.h
new file mode 100644
index 00000000000..8e0758cf2e4
--- /dev/null
+++ b/src/vlib/linux/vfio.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef included_vlib_linux_vfio_h
+#define included_vlib_linux_vfio_h
+
+typedef struct
+{
+  int group;
+  int fd;
+  int refcnt;
+} linux_pci_vfio_iommu_group_t;
+
+typedef struct
+{
+  u32 flags;
+#define LINUX_VFIO_F_HAVE_IOMMU		(1 << 0)
+  int container_fd;
+  int ext_container_fd;		/* container fd used by external library, i.e DPDK */
+
+  /* VFIO */
+  int iommu_mode;
+
+  /* pool of IOMMU groups */
+  linux_pci_vfio_iommu_group_t *iommu_groups;
+
+  /* iommu group pool index by group id  hash */
+  uword *iommu_pool_index_by_group;
+
+} linux_vfio_main_t;
+
+extern linux_vfio_main_t vfio_main;
+
+clib_error_t *linux_vfio_init (vlib_main_t * vm);
+void linux_vfio_dma_map_regions (vlib_main_t * vm);
+clib_error_t *linux_vfio_group_get_device_fd (vlib_pci_addr_t * addr,
+					      int *fd);
+
+
+#endif /* included_vlib_linux_vfio_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */