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
27static int
28nv04_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
70struct nvkm_oclass
71nv04_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};
80