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 "ram.h"
25 
26 int
27 nv10_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
28 {
29 	struct nvkm_device *device = fb->subdev.device;
30 	u32 size = nvkm_rd32(device, 0x10020c) & 0xff000000;
31 	u32 cfg0 = nvkm_rd32(device, 0x100200);
32 	enum nvkm_ram_type type;
33 
34 	if (cfg0 & 0x00000001)
35 		type = NVKM_RAM_TYPE_DDR1;
36 	else
37 		type = NVKM_RAM_TYPE_SDRAM;
38 
39 	return nvkm_ram_new_(&nv04_ram_func, fb, type, size, pram);
40 }
41