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1/*␊
2 * nvidia_resolution.c␊
3 * ␊
4 *␊
5 * Created by Le Bidou on 19/03/10.␊
6 * Copyright 2010 ---. All rights reserved.␊
7 *␊
8 */␊
9␊
10#include "nvidia_resolution.h"␊
11␊
12vbios_map * open_nvidia_vbios(vbios_map *map)␊
13{␊
14␉unsigned short nv_data_table_offset = 0;␊
15␉unsigned short nv_modeline_2_offset = 0;␊
16␉unsigned short * nv_data_table = NULL;␊
17␉NV_VESA_TABLE * std_vesa;␊
18␉␊
19␉/*␊
20␉ * Locate the VESA Tables␊
21␉ */␊
22␉␊
23␉int i = 0;␊
24␉␊
25␉while (i < 0x300) { //We don't need to look for the table in the whole bios, the 768 first bytes only␊
26␉␉if ((map->bios_ptr[i] == 0x44) ␊
27␉␉␉&& (map->bios_ptr[i+1] == 0x01) ␊
28␉␉␉&& (map->bios_ptr[i+2] == 0x04) ␊
29␉␉␉&& (map->bios_ptr[i+3] == 0x00)) {␊
30␉␉␉nv_data_table_offset = (unsigned short) (map->bios_ptr[i+4] | (map->bios_ptr[i+5] << 8));␊
31␉␉␉break;␊
32␉␉}␊
33␉␉i++;␊
34␉}␊
35␉//Second VESA Table on some nVidia 8xxx 9xxx and GT␊
36␉while (i < VBIOS_SIZE) { //We don't know how to locate it other way␊
37␉␉if ((map->bios_ptr[i] == 0x40) && (map->bios_ptr[i+1] == 0x01) //this is the first 320x200 modeline.␊
38␉␉␉&& (map->bios_ptr[i+2] == 0xC8) && (map->bios_ptr[i+3] == 0x00)␊
39␉␉␉&& (map->bios_ptr[i+4] == 0x28)␊
40␉␉␉&& (map->bios_ptr[i+5] == 0x18)␊
41␉␉␉&& (map->bios_ptr[i+6] == 0x08)␊
42␉␉␉&& (map->bios_ptr[i+7] == 0x08)) {␊
43␉␉␉nv_modeline_2_offset = (unsigned short) i;␊
44␉␉␉break;␊
45␉␉}␊
46␉␉i++;␊
47␉}␊
48␉␊
49␉nv_data_table = (unsigned short *) (map->bios_ptr + (nv_data_table_offset + OFFSET_TO_VESA_TABLE_INDEX));␊
50␉std_vesa = (NV_VESA_TABLE *) (map->bios_ptr + *nv_data_table);␊
51␉map->mode_table = (char *) std_vesa->sModelines;␊
52␉PRINT("First Standard VESA Table at offset 0x%x\n", *nv_data_table);␊
53␉␊
54␉if (nv_modeline_2_offset == (VBIOS_SIZE-1) || nv_modeline_2_offset == 0) {␊
55␉␉map->nv_mode_table_2 = NULL;␊
56␉␉PRINT("There is no Second Standard VESA Table to patch\n");␊
57␉} else {␊
58␉␉map->nv_mode_table_2 = (char*) map->bios_ptr + nv_modeline_2_offset;␊
59␉␉PRINT("Second Standard VESA Table at offset 0x%x\n", nv_modeline_2_offset);␊
60␉}␊
61␉␊
62␉if (map->mode_table == NULL) {␊
63␉␉PRINT("Unable to locate the mode table.\n");␊
64␉␉PRINT("Please run the program 'dump_bios' as root and\n");␊
65␉␉PRINT("email the file 'vbios.dmp' to gaeloulacuisse@yahoo.fr.\n");␊
66␉␉␊
67␉␉close_vbios(map);␊
68␉␉return 0;␊
69␉}␊
70␉␊
71␉␉/*␊
72␉ * Having trouble determining the number of table␊
73␉ * so it's hardcode to 16 and 31 for the First VESA table␊
74␉ * and the Second Vesa Table respectively␊
75␉␉ ␉ */␊
76␉␉␊
77␉map->modeline_num = 16;␊
78␉map->nv_modeline_num_2 = 31;␊
79␉␊
80␉/*NV_MODELINE_2 *␉mode_2_ptr =␉(NV_MODELINE_2 *)␉map->nv_mode_table_2;␊
81␉␉map->modeline_num = map->nv_modeline_num_2 = 0;␊
82␉␉␊
83␉␉//First Table␊
84␉map->modeline_num = std_vesa->sHeader.usTableSize;␊
85␉␉␊
86␉PRINT("First VESA Table has %d modes\n",map->modeline_num);␊
87␉␉if (map->modeline_num == 0) {␊
88␉␉PRINT("%d is incorrect, make it a 16\n",map->modeline_num);␊
89␉␉␉␉map->modeline_num = 16;␊
90␉␉␉}␊
91␉␉map->mode_table_size = map->modeline_num * sizeof(NV_MODELINE);␊
92␉␉␊
93␉␉//Second Table␊
94␉map->nv_modeline_num_2 = *((UInt8 *)(mode_2_ptr - 2)) - 32;␊
95␉␉␊
96␉PRINT("Second VESA Table has %d modes\n",map->nv_modeline_num_2);␊
97␉␉if (map->nv_modeline_num_2 == 0) {␊
98␉␉PRINT("%d is incorrect, make it a 32\n",map->nv_modeline_num_2);␊
99␉␉␉␉map->nv_modeline_num_2 = 32;␊
100␉␉␉}␊
101␉map->nv_mode_table_2_size = map->nv_modeline_num_2 * sizeof(NV_MODELINE_2);*/␊
102␉␊
103␉return map;␊
104}␊
105␊
106bool nvidia_set_mode(vbios_map* map, UInt8 idx, UInt32* x, UInt32* y, char Type)␊
107{␊
108␉if (Type == MAIN_VESA_TABLE) {␊
109␉␉NV_MODELINE * mode_timing = (NV_MODELINE *) map->mode_table;␊
110␉␉␊
111␉␉if ((*x != 0) && (*y != 0) && ( mode_timing[idx].usH_Active >= 640 )) {␊
112␉␉␉␊
113␉␉␉PRINT("Mode %dx%d -> %dx%d ", mode_timing[idx].usH_Active, mode_timing[idx].usV_Active,␊
114␉␉␉␉␉*x, *y);␊
115␉␉␉␊
116␉␉␉generic_modeline modeline;␊
117␉␉␉␊
118␉␉␉cvt_timings(*x, *y, 60, &modeline.clock,␊
119␉␉␉␉␉␉&modeline.hsyncstart, &modeline.hsyncend,␊
120␉␉␉␉␉␉&modeline.htotal, &modeline.vsyncstart,␊
121␉␉␉␉␉␉&modeline.vsyncend, &modeline.vtotal, FALSE);␊
122␉␉␉␊
123␉␉␉mode_timing[idx].usH_Active = *x;␊
124␉␉␉mode_timing[idx].usH_Active_minus_One = *x - 1;␊
125␉␉␉mode_timing[idx].usH_Active_minus_One_ = *x - 1;␊
126␉␉␉␊
127␉␉␉mode_timing[idx].usV_Active = *y;␊
128␉␉␉mode_timing[idx].usV_Active_minus_One = *y - 1;␊
129␉␉␉mode_timing[idx].usV_Active_minus_One_ = *y - 1;␊
130␉␉␉␊
131␉␉␉mode_timing[idx].usH_Total = modeline.htotal;␊
132␉␉␉mode_timing[idx].usH_SyncStart = modeline.hsyncstart;␊
133␉␉␉mode_timing[idx].usH_SyncEnd = modeline.hsyncend;␊
134␉␉␉␊
135␉␉␉mode_timing[idx].usV_Total = modeline.vtotal;␊
136␉␉␉mode_timing[idx].usV_SyncStart = modeline.vsyncstart;␊
137␉␉␉mode_timing[idx].usV_SyncEnd = modeline.vsyncend;␊
138␉␉␉␊
139␉␉␉mode_timing[idx].usPixel_Clock = modeline.clock;␊
140␉␉}␊
141␉␉␊
142␉␉*x = mode_timing[idx + 1].usH_Active;␊
143␉␉*y = mode_timing[idx + 1].usV_Active;␊
144␉}␊
145␉␊
146␉if (Type == SECOND_VESA_TABLE) {␊
147␉␉NV_MODELINE_2 * mode_timing = (NV_MODELINE_2 *) map->nv_mode_table_2;␊
148␉␉␊
149␉␉if (mode_timing[idx].h_disp > 0x800) return FALSE;␊
150␉␉␊
151␉␉if ((*x != 0) && (*y != 0) && ( mode_timing[idx].h_disp >= 640 )) {␊
152␉␉␉␊
153␉␉␉PRINT("Mode %dx%d -> %dx%d ", mode_timing[idx].h_disp, mode_timing[idx].v_disp,␊
154␉␉␉␉␉*x, *y);␊
155␉␉␉␊
156␉␉␉generic_modeline modeline;␊
157␉␉␉␊
158␉␉␉cvt_timings(*x, *y, 60, &modeline.clock,␊
159␉␉␉␉␉␉&modeline.hsyncstart, &modeline.hsyncend,␊
160␉␉␉␉␉␉&modeline.htotal, &modeline.vsyncstart,␊
161␉␉␉␉␉␉&modeline.vsyncend, &modeline.vtotal, TRUE);␊
162␉␉␉␊
163␉␉␉mode_timing[idx].h_disp = *x;␊
164␉␉␉mode_timing[idx].v_disp = *y;␊
165␉␉␉mode_timing[idx].h_blank = modeline.htotal - *x;␊
166␉␉␉mode_timing[idx].h_syncoffset = modeline.hsyncstart - *x;␊
167␉␉␉mode_timing[idx].h_syncwidth = modeline.hsyncend - modeline.hsyncstart;␊
168␉␉␉mode_timing[idx].v_blank = modeline.vtotal - *y;␊
169␉␉}␊
170␉␉␊
171␉␉*x = mode_timing[idx + 1].h_disp;␊
172␉␉*y = mode_timing[idx + 1].v_disp;␊
173␉}␊
174␉return TRUE;␊
175}␊
176

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