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 nv20_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 	u32 pbus1218 = nv_rd32(pfb, 0x001218);
34 	int ret;
35 
36 	ret = nvkm_ram_create(parent, engine, oclass, &ram);
37 	*pobject = nv_object(ram);
38 	if (ret)
39 		return ret;
40 
41 	switch (pbus1218 & 0x00000300) {
42 	case 0x00000000: ram->type = NV_MEM_TYPE_SDRAM; break;
43 	case 0x00000100: ram->type = NV_MEM_TYPE_DDR1; break;
44 	case 0x00000200: ram->type = NV_MEM_TYPE_GDDR3; break;
45 	case 0x00000300: ram->type = NV_MEM_TYPE_GDDR2; break;
46 	}
47 	ram->size  = (nv_rd32(pfb, 0x10020c) & 0xff000000);
48 	ram->parts = (nv_rd32(pfb, 0x100200) & 0x00000003) + 1;
49 	ram->tags  = nv_rd32(pfb, 0x100320);
50 	return 0;
51 }
52 
53 struct nvkm_oclass
54 nv20_ram_oclass = {
55 	.handle = 0,
56 	.ofuncs = &(struct nvkm_ofuncs) {
57 		.ctor = nv20_ram_create,
58 		.dtor = _nvkm_ram_dtor,
59 		.init = _nvkm_ram_init,
60 		.fini = _nvkm_ram_fini,
61 	}
62 };
63