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
nvkm_uvfn_map(struct nvkm_object * object,void * argv,u32 argc,enum nvkm_object_map * type,u64 * addr,u64 * size)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
nvkm_uvfn_new(struct nvkm_device * device,const struct nvkm_oclass * oclass,void * argv,u32 argc,struct nvkm_object ** pobject)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