1 /*
2 * Copyright (C) 2010 Francisco Jerez.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27 #include <subdev/devinit.h>
28 #include <subdev/vga.h>
29
30 #include "fbmem.h"
31
32 struct nv10_devinit_priv {
33 struct nouveau_devinit base;
34 u8 owner;
35 };
36
37 static void
nv10_devinit_meminit(struct nouveau_devinit * devinit)38 nv10_devinit_meminit(struct nouveau_devinit *devinit)
39 {
40 struct nv10_devinit_priv *priv = (void *)devinit;
41 const int mem_width[] = { 0x10, 0x00, 0x20 };
42 const int mem_width_count = nv_device(priv)->chipset >= 0x17 ? 3 : 2;
43 uint32_t patt = 0xdeadbeef;
44 struct io_mapping *fb;
45 int i, j, k;
46
47 /* Map the framebuffer aperture */
48 fb = fbmem_init(nv_device(priv)->pdev);
49 if (!fb) {
50 nv_error(priv, "failed to map fb\n");
51 return;
52 }
53
54 nv_wr32(priv, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1);
55
56 /* Probe memory bus width */
57 for (i = 0; i < mem_width_count; i++) {
58 nv_mask(priv, NV04_PFB_CFG0, 0x30, mem_width[i]);
59
60 for (j = 0; j < 4; j++) {
61 for (k = 0; k < 4; k++)
62 fbmem_poke(fb, 0x1c, 0);
63
64 fbmem_poke(fb, 0x1c, patt);
65 fbmem_poke(fb, 0x3c, 0);
66
67 if (fbmem_peek(fb, 0x1c) == patt)
68 goto mem_width_found;
69 }
70 }
71
72 mem_width_found:
73 patt <<= 1;
74
75 /* Probe amount of installed memory */
76 for (i = 0; i < 4; i++) {
77 int off = nv_rd32(priv, 0x10020c) - 0x100000;
78
79 fbmem_poke(fb, off, patt);
80 fbmem_poke(fb, 0, 0);
81
82 fbmem_peek(fb, 0);
83 fbmem_peek(fb, 0);
84 fbmem_peek(fb, 0);
85 fbmem_peek(fb, 0);
86
87 if (fbmem_peek(fb, off) == patt)
88 goto amount_found;
89 }
90
91 /* IC missing - disable the upper half memory space. */
92 nv_mask(priv, NV04_PFB_CFG0, 0x1000, 0);
93
94 amount_found:
95 fbmem_fini(fb);
96 }
97
98 static int
nv10_devinit_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 size,struct nouveau_object ** pobject)99 nv10_devinit_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
100 struct nouveau_oclass *oclass, void *data, u32 size,
101 struct nouveau_object **pobject)
102 {
103 struct nv10_devinit_priv *priv;
104 int ret;
105
106 ret = nouveau_devinit_create(parent, engine, oclass, &priv);
107 *pobject = nv_object(priv);
108 if (ret)
109 return ret;
110
111 priv->base.meminit = nv10_devinit_meminit;
112 return 0;
113 }
114
115 struct nouveau_oclass
116 nv10_devinit_oclass = {
117 .handle = NV_SUBDEV(DEVINIT, 0x10),
118 .ofuncs = &(struct nouveau_ofuncs) {
119 .ctor = nv10_devinit_ctor,
120 .dtor = nv04_devinit_dtor,
121 .init = nv04_devinit_init,
122 .fini = nv04_devinit_fini,
123 },
124 };
125