1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/uvfn.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/uvfn.c
new file mode 100644
index 000000000000..c5460a14c541
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/uvfn.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2021 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#define nvkm_uvfn(p) container_of((p), struct nvkm_uvfn, object)
+#include "priv.h"
+
+#include <core/object.h>
+
+struct nvkm_uvfn {
+	struct nvkm_object object;
+	struct nvkm_vfn *vfn;
+};
+
+static int
+nvkm_uvfn_map(struct nvkm_object *object, void *argv, u32 argc,
+	      enum nvkm_object_map *type, u64 *addr, u64 *size)
+{
+	struct nvkm_vfn *vfn = nvkm_uvfn(object)->vfn;
+	struct nvkm_device *device = vfn->subdev.device;
+
+	*addr = device->func->resource_addr(device, 0) + vfn->addr.user;
+	*size = vfn->func->user.size;
+	*type = NVKM_OBJECT_MAP_IO;
+	return 0;
+}
+
+static const struct nvkm_object_func
+nvkm_uvfn = {
+	.map = nvkm_uvfn_map,
+};
+
+int
+nvkm_uvfn_new(struct nvkm_device *device, const struct nvkm_oclass *oclass,
+	      void *argv, u32 argc, struct nvkm_object **pobject)
+{
+	struct nvkm_uvfn *uvfn;
+
+	if (argc != 0)
+		return -ENOSYS;
+
+	if (!(uvfn = kzalloc(sizeof(*uvfn), GFP_KERNEL)))
+		return -ENOMEM;
+
+	nvkm_object_ctor(&nvkm_uvfn, oclass, &uvfn->object);
+	uvfn->vfn = device->vfn;
+
+	*pobject = &uvfn->object;
+	return 0;
+}