xref: /linux/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramnv4e.c (revision 2ba9268dd603d23e17643437b2246acb6844953b)
1 /*
2  * Copyright 2013 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  * Authors: Ben Skeggs
23  */
24 #include "priv.h"
25 
26 static int
27 nv4e_ram_create(struct nvkm_object *parent, struct nvkm_object *engine,
28 		struct nvkm_oclass *oclass, void *data, u32 size,
29 		struct nvkm_object **pobject)
30 {
31 	struct nvkm_fb *pfb = nvkm_fb(parent);
32 	struct nvkm_ram *ram;
33 	int ret;
34 
35 	ret = nvkm_ram_create(parent, engine, oclass, &ram);
36 	*pobject = nv_object(ram);
37 	if (ret)
38 		return ret;
39 
40 	ram->size = nv_rd32(pfb, 0x10020c) & 0xff000000;
41 	ram->type = NV_MEM_TYPE_STOLEN;
42 	return 0;
43 }
44 
45 struct nvkm_oclass
46 nv4e_ram_oclass = {
47 	.handle = 0,
48 	.ofuncs = &(struct nvkm_ofuncs) {
49 		.ctor = nv4e_ram_create,
50 		.dtor = _nvkm_ram_dtor,
51 		.init = _nvkm_ram_init,
52 		.fini = _nvkm_ram_fini,
53 	}
54 };
55