1 files changed, 66 insertions, 0 deletions
diff --git a/include/system/iommufd.h b/include/system/iommufd.h
new file mode 100644
index 0000000000..cbab75bfbf
--- /dev/null
+++ b/include/system/iommufd.h
@@ -0,0 +1,66 @@
+/*
+ * iommufd container backend declaration
+ *
+ * Copyright (C) 2024 Intel Corporation.
+ * Copyright Red Hat, Inc. 2024
+ *
+ * Authors: Yi Liu <yi.l.liu@intel.com>
+ *          Eric Auger <eric.auger@redhat.com>
+ *          Zhenzhong Duan <zhenzhong.duan@intel.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef SYSTEM_IOMMUFD_H
+#define SYSTEM_IOMMUFD_H
+
+#include "qom/object.h"
+#include "exec/hwaddr.h"
+#include "exec/cpu-common.h"
+#include "system/host_iommu_device.h"
+
+#define TYPE_IOMMUFD_BACKEND "iommufd"
+OBJECT_DECLARE_TYPE(IOMMUFDBackend, IOMMUFDBackendClass, IOMMUFD_BACKEND)
+
+struct IOMMUFDBackendClass {
+    ObjectClass parent_class;
+};
+
+struct IOMMUFDBackend {
+    Object parent;
+
+    /*< protected >*/
+    int fd;            /* /dev/iommu file descriptor */
+    bool owned;        /* is the /dev/iommu opened internally */
+    uint32_t users;
+
+    /*< public >*/
+};
+
+bool iommufd_backend_connect(IOMMUFDBackend *be, Error **errp);
+void iommufd_backend_disconnect(IOMMUFDBackend *be);
+
+bool iommufd_backend_alloc_ioas(IOMMUFDBackend *be, uint32_t *ioas_id,
+                                Error **errp);
+void iommufd_backend_free_id(IOMMUFDBackend *be, uint32_t id);
+int iommufd_backend_map_dma(IOMMUFDBackend *be, uint32_t ioas_id, hwaddr iova,
+                            ram_addr_t size, void *vaddr, bool readonly);
+int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t ioas_id,
+                              hwaddr iova, ram_addr_t size);
+bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid,
+                                     uint32_t *type, void *data, uint32_t len,
+                                     uint64_t *caps, Error **errp);
+bool iommufd_backend_alloc_hwpt(IOMMUFDBackend *be, uint32_t dev_id,
+                                uint32_t pt_id, uint32_t flags,
+                                uint32_t data_type, uint32_t data_len,
+                                void *data_ptr, uint32_t *out_hwpt,
+                                Error **errp);
+bool iommufd_backend_set_dirty_tracking(IOMMUFDBackend *be, uint32_t hwpt_id,
+                                        bool start, Error **errp);
+bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be, uint32_t hwpt_id,
+                                      uint64_t iova, ram_addr_t size,
+                                      uint64_t page_size, uint64_t *data,
+                                      Error **errp);
+
+#define TYPE_HOST_IOMMU_DEVICE_IOMMUFD TYPE_HOST_IOMMU_DEVICE "-iommufd"
+#endif