1 /*
2  * Copyright 2021 Red Hat Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  */
22 #define nvkm_uvfn(p) container_of((p), struct nvkm_uvfn, object)
23 #include "priv.h"
24 
25 #include <core/object.h>
26 
27 struct nvkm_uvfn {
28 	struct nvkm_object object;
29 	struct nvkm_vfn *vfn;
30 };
31 
32 static int
33 nvkm_uvfn_map(struct nvkm_object *object, void *argv, u32 argc,
34 	      enum nvkm_object_map *type, u64 *addr, u64 *size)
35 {
36 	struct nvkm_vfn *vfn = nvkm_uvfn(object)->vfn;
37 	struct nvkm_device *device = vfn->subdev.device;
38 
39 	*addr = device->func->resource_addr(device, 0) + vfn->addr.user;
40 	*size = vfn->func->user.size;
41 	*type = NVKM_OBJECT_MAP_IO;
42 	return 0;
43 }
44 
45 static const struct nvkm_object_func
46 nvkm_uvfn = {
47 	.map = nvkm_uvfn_map,
48 };
49 
50 int
51 nvkm_uvfn_new(struct nvkm_device *device, const struct nvkm_oclass *oclass,
52 	      void *argv, u32 argc, struct nvkm_object **pobject)
53 {
54 	struct nvkm_uvfn *uvfn;
55 
56 	if (argc != 0)
57 		return -ENOSYS;
58 
59 	if (!(uvfn = kzalloc(sizeof(*uvfn), GFP_KERNEL)))
60 		return -ENOMEM;
61 
62 	nvkm_object_ctor(&nvkm_uvfn, oclass, &uvfn->object);
63 	uvfn->vfn = device->vfn;
64 
65 	*pobject = &uvfn->object;
66 	return 0;
67 }
68