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cb75d97e BS |
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 | ||
cb75d97e BS |
27 | #include <subdev/vga.h> |
28 | ||
29 | #include "fbmem.h" | |
cf336014 | 30 | #include "nv04.h" |
cb75d97e BS |
31 | |
32 | static void | |
33 | nv10_devinit_meminit(struct nouveau_devinit *devinit) | |
34 | { | |
cf336014 | 35 | struct nv04_devinit_priv *priv = (void *)devinit; |
8aa816b0 IM |
36 | static const int mem_width[] = { 0x10, 0x00, 0x20 }; |
37 | int mem_width_count; | |
cb75d97e BS |
38 | uint32_t patt = 0xdeadbeef; |
39 | struct io_mapping *fb; | |
40 | int i, j, k; | |
41 | ||
8aa816b0 IM |
42 | if (nv_device(priv)->card_type >= NV_11 && |
43 | nv_device(priv)->chipset >= 0x17) | |
44 | mem_width_count = 3; | |
45 | else | |
46 | mem_width_count = 2; | |
47 | ||
cb75d97e BS |
48 | /* Map the framebuffer aperture */ |
49 | fb = fbmem_init(nv_device(priv)->pdev); | |
50 | if (!fb) { | |
51 | nv_error(priv, "failed to map fb\n"); | |
52 | return; | |
53 | } | |
54 | ||
55 | nv_wr32(priv, NV10_PFB_REFCTRL, NV10_PFB_REFCTRL_VALID_1); | |
56 | ||
57 | /* Probe memory bus width */ | |
58 | for (i = 0; i < mem_width_count; i++) { | |
59 | nv_mask(priv, NV04_PFB_CFG0, 0x30, mem_width[i]); | |
60 | ||
61 | for (j = 0; j < 4; j++) { | |
62 | for (k = 0; k < 4; k++) | |
63 | fbmem_poke(fb, 0x1c, 0); | |
64 | ||
65 | fbmem_poke(fb, 0x1c, patt); | |
66 | fbmem_poke(fb, 0x3c, 0); | |
67 | ||
68 | if (fbmem_peek(fb, 0x1c) == patt) | |
69 | goto mem_width_found; | |
70 | } | |
71 | } | |
72 | ||
73 | mem_width_found: | |
74 | patt <<= 1; | |
75 | ||
76 | /* Probe amount of installed memory */ | |
77 | for (i = 0; i < 4; i++) { | |
78 | int off = nv_rd32(priv, 0x10020c) - 0x100000; | |
79 | ||
80 | fbmem_poke(fb, off, patt); | |
81 | fbmem_poke(fb, 0, 0); | |
82 | ||
83 | fbmem_peek(fb, 0); | |
84 | fbmem_peek(fb, 0); | |
85 | fbmem_peek(fb, 0); | |
86 | fbmem_peek(fb, 0); | |
87 | ||
88 | if (fbmem_peek(fb, off) == patt) | |
89 | goto amount_found; | |
90 | } | |
91 | ||
92 | /* IC missing - disable the upper half memory space. */ | |
93 | nv_mask(priv, NV04_PFB_CFG0, 0x1000, 0); | |
94 | ||
95 | amount_found: | |
96 | fbmem_fini(fb); | |
97 | } | |
98 | ||
cf336014 BS |
99 | struct nouveau_oclass * |
100 | nv10_devinit_oclass = &(struct nouveau_devinit_impl) { | |
101 | .base.handle = NV_SUBDEV(DEVINIT, 0x10), | |
102 | .base.ofuncs = &(struct nouveau_ofuncs) { | |
103 | .ctor = nv04_devinit_ctor, | |
cb75d97e BS |
104 | .dtor = nv04_devinit_dtor, |
105 | .init = nv04_devinit_init, | |
106 | .fini = nv04_devinit_fini, | |
107 | }, | |
cf336014 BS |
108 | .meminit = nv10_devinit_meminit, |
109 | .pll_set = nv04_devinit_pll_set, | |
110 | }.base; |