Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / subdev / fb / ramnv04.c
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 #include "regsnv04.h"
26
27 static int
28 nv04_ram_create(struct nvkm_object *parent, struct nvkm_object *engine,
29                 struct nvkm_oclass *oclass, void *data, u32 size,
30                 struct nvkm_object **pobject)
31 {
32         struct nvkm_fb *pfb = nvkm_fb(parent);
33         struct nvkm_ram *ram;
34         u32 boot0 = nv_rd32(pfb, NV04_PFB_BOOT_0);
35         int ret;
36
37         ret = nvkm_ram_create(parent, engine, oclass, &ram);
38         *pobject = nv_object(ram);
39         if (ret)
40                 return ret;
41
42         if (boot0 & 0x00000100) {
43                 ram->size  = ((boot0 >> 12) & 0xf) * 2 + 2;
44                 ram->size *= 1024 * 1024;
45         } else {
46                 switch (boot0 & NV04_PFB_BOOT_0_RAM_AMOUNT) {
47                 case NV04_PFB_BOOT_0_RAM_AMOUNT_32MB:
48                         ram->size = 32 * 1024 * 1024;
49                         break;
50                 case NV04_PFB_BOOT_0_RAM_AMOUNT_16MB:
51                         ram->size = 16 * 1024 * 1024;
52                         break;
53                 case NV04_PFB_BOOT_0_RAM_AMOUNT_8MB:
54                         ram->size = 8 * 1024 * 1024;
55                         break;
56                 case NV04_PFB_BOOT_0_RAM_AMOUNT_4MB:
57                         ram->size = 4 * 1024 * 1024;
58                         break;
59                 }
60         }
61
62         if ((boot0 & 0x00000038) <= 0x10)
63                 ram->type = NV_MEM_TYPE_SGRAM;
64         else
65                 ram->type = NV_MEM_TYPE_SDRAM;
66
67         return 0;
68 }
69
70 struct nvkm_oclass
71 nv04_ram_oclass = {
72         .handle = 0,
73         .ofuncs = &(struct nvkm_ofuncs) {
74                 .ctor = nv04_ram_create,
75                 .dtor = _nvkm_ram_dtor,
76                 .init = _nvkm_ram_init,
77                 .fini = _nvkm_ram_fini,
78         }
79 };