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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␊
12vBiosMap * openNvidiaVbios(vBiosMap *map)␊
13{␊
14␉unsigned short nvDataTableOffset = 0;␊
15␉unsigned short nvModeline_2_Offset = 0;␊
16␉unsigned short * nvDataTable = NULL;␊
17␉nvVesaTable * stdVesa;␊
18␉␊
19␉// initialize the table chain with two elements␊
20␉sModeTable * table = intializeTables(map, 2);␊
21␉/*␊
22␉ * Locate the VESA Tables␊
23␉ */␊
24␉␊
25␉int i = 0;␊
26␉//First VESA Table␊
27␉while (i < 0x300) //We don't need to look for the table in the whole bios, the 768 first bytes only␊
28␉{ ␊
29␉␉if ((map->biosPtr[i] == 0x44) ␊
30␉␉␉&& (map->biosPtr[i+1] == 0x01) ␊
31␉␉␉&& (map->biosPtr[i+2] == 0x04) ␊
32␉␉␉&& (map->biosPtr[i+3] == 0x00)) {␊
33␉␉␉nvDataTableOffset = (unsigned short) (map->biosPtr[i+4] | (map->biosPtr[i+5] << 8));␊
34␉␉␉break;␊
35␉␉}␊
36␉␉i++;␊
37␉}␊
38␉␊
39␉nvDataTable = (unsigned short *) (map->biosPtr + (nvDataTableOffset + OFFSET_TO_VESA_TABLE_INDEX));␊
40␉stdVesa = (nvVesaTable *) (map->biosPtr + *nvDataTable);␊
41␉table->pointer = (uint8_t *) stdVesa + sizeof(nvCommonTableHeader);␊
42␉verbose("First Standard VESA Table at offset 0x%x\n",(unsigned int) (table->pointer - map->biosPtr));␊
43␉␊
44␉//Second VESA Table␊
45␉while (i < VBIOS_SIZE) //We don't know how to locate it other way␊
46␉{␊
47␉␉if ((map->biosPtr[i] == 0x40) && (map->biosPtr[i+1] == 0x01) //this is the first 320x200 modeline.␊
48␉␉␉&& (map->biosPtr[i+2] == 0xC8) && (map->biosPtr[i+3] == 0x00)␊
49␉␉␉&& (map->biosPtr[i+4] == 0x28)␊
50␉␉␉&& (map->biosPtr[i+5] == 0x18)␊
51␉␉␉&& (map->biosPtr[i+6] == 0x08)␊
52␉␉␉&& (map->biosPtr[i+7] == 0x08))␊
53␉␉{␊
54␉␉␉nvModeline_2_Offset = (unsigned short) i;␊
55␉␉␉break;␊
56␉␉}␊
57␉␉i++;␊
58␉}␊
59␊
60␉if (nvModeline_2_Offset == (VBIOS_SIZE-1) || nvModeline_2_Offset == 0)␊
61␉{␊
62␉␉//If no second vesa table is available, free the corresponding table in chain␊
63␉␉free(table->next);␊
64␉␉table->next = NULL;␊
65␉␉PRINT("There is no Second Standard VESA Table to patch\n");␊
66␉} ␊
67␉else␊
68␉{␊
69␉␉table = table->next;␊
70␉␉table->pointer = map->biosPtr + nvModeline_2_Offset;␊
71␉␉PRINT("Second Standard VESA Table at offset 0x%x\n", (unsigned int)(table->pointer - map->biosPtr));␊
72␉}␊
73␉␊
74␉if (table->prev->pointer == NULL)␊
75␉{␊
76␉␉PRINT("Unable to locate the mode table.\n");␊
77␉␉PRINT("Please run the program 'dumpBios' as root and\n");␊
78␉␉PRINT("email the file 'vbios.dmp' to gaeloulacuisse@yahoo.fr.\n");␊
79␉␉␊
80␉␉closeVbios(map);␊
81␉␉return 0;␊
82␉}␊
83␉␊
84␉// reset the table pointer to the first in chain␊
85␉table = map->modeTables;␊
86␉␊
87␉/*␊
88␉ * for each table in chain, figure out how many modes are available␊
89␉ * and what is the size of the table␊
90␉ */␊
91␉while (table != NULL)␊
92␉{␊
93␉␉table->modeCount = 0;␊
94␉␉PRINT("Table #%d has ", table->id);␊
95␉␉␊
96␉␉if (table->id == MAIN_VESA_TABLE)␊
97␉␉{␊
98␉␉␉table->modeCount = stdVesa->header.tableSize & 0xff;␊
99␉␉␉if (table->modeCount == 0) table->modeCount = 16;␊
100␉␉␉table->size = table->modeCount * sizeof(nvModeline);␊
101␉␉}␊
102␉␉␊
103␉␉if (table->id == SECOND_VESA_TABLE)␊
104␉␉{␊
105␉␉␉nvModeline_2 * modePtr = (nvModeline_2 *)table->pointer;␊
106␉␉␉while (1)␊
107␉␉␉{␊
108␉␉␉␉if (modePtr[table->modeCount].hActive > 2048) break;␊
109␉␉␉␉table->modeCount++;␉␉␊
110␉␉␉}␊
111␉␉␉if (table->modeCount == 0) table->modeCount = 31;␊
112␉␉␉table->size = table->modeCount * sizeof(nvModeline_2);␊
113␉␉}␊
114␉␉␊
115␉␉PRINT("%d modes\n", table->modeCount);␊
116␉␉table = table->next;␊
117␉}␊
118␉␊
119␉map->setMode = nvidiaSetMode;␊
120␉␊
121␉saveTables(map->modeTables);␊
122␉␊
123#ifdef AUTORES_DEBUG␊
124␉getc();␊
125#endif␊
126␉␊
127␉return map;␊
128}␊
129␊
130bool nvidiaSetMode(sModeTable * table, uint8_t idx, uint32_t* x, uint32_t* y)␊
131{␊
132␉//In First VESA table, only first mode in table is patched␊
133␉if (table->id == MAIN_VESA_TABLE)␊
134␉{␊
135␉␉nvModeline * modeTiming = (nvModeline *)table->pointer;␊
136␉␉␊
137␉␉// patch only if mode differs and if the mode to patch isn't a console mode␊
138␉␉if (((*x != modeTiming[idx].hActive) || (*y != modeTiming[idx].vActive))␊
139␉␉␉&& (modeTiming[idx].hActive > 100))␊
140␉␉{␊
141␉␉␉␊
142␉␉␉PRINT("Mode %dx%d -> ", modeTiming[idx].hActive, modeTiming[idx].vActive);␊
143␉␉␉␊
144␉␉␉if (modeTiming[idx].hActive != *x)␊
145␉␉␉{␊
146␉␉␉␉modeTiming[idx].hActive = *x;␊
147␉␉␉␉modeTiming[idx].hActiveMinusOne = *x - 1;␊
148␉␉␉␉modeTiming[idx].hActiveMinusOne_ = *x - 1;␊
149␉␉␉}␊
150␉␉␉␊
151␉␉␉modeTiming[idx].vActive = *y;␊
152␉␉␉modeTiming[idx].vActiveMinusOne = *y - 1;␊
153␉␉␉modeTiming[idx].vActiveMinusOne_ = *y - 1;␊
154␉␉␉␊
155␉␉␉PRINT("%dx%d (%d %d %d %d %d %d)\n",␊
156␉␉␉␉ modeTiming[idx].hActive,␊
157␉␉␉␉ modeTiming[idx].vActive,␊
158␉␉␉␉ modeTiming[idx].hSyncStart,␊
159␉␉␉␉ modeTiming[idx].hSyncEnd,␊
160␉␉␉␉ modeTiming[idx].hTotal,␊
161␉␉␉␉ modeTiming[idx].vSyncStart,␊
162␉␉␉␉ modeTiming[idx].vSyncEnd,␊
163␉␉␉␉ modeTiming[idx].vTotal);␊
164␉␉}␊
165␉␉␊
166␉␉//Since we are only patching the first mode, this deprecated␊
167␉␉*x = modeTiming[idx + 1].hActive;␊
168␉␉*y = modeTiming[idx + 1].vActive;␊
169␉}␊
170␉␊
171␉if (table->id == SECOND_VESA_TABLE)␊
172␉{␊
173␉␉nvModeline_2 * modeTiming = (nvModeline_2 *) table->pointer;␊
174␉␉int h = *y;␊
175␉␉int w = *x;␊
176␉␉␊
177␉␉while (idx < table->modeCount)␊
178␉␉{␊
179␉␉␉*y = *x * h / w;␊
180␉␉␉//patch only different mode in table except console modes and 320 wide modes␊
181␉␉␉if (((*x != modeTiming[idx].hActive) || (*y != modeTiming[idx].vActive))␊
182␉␉␉␉&& (modeTiming[idx].hActive > 400))␊
183␉␉␉{␊
184␉␉␉␊
185␉␉␉␉PRINT("Mode %dx%d -> ", modeTiming[idx].hActive, modeTiming[idx].vActive);␊
186␉␉␉␊
187␉␉␉␉if (modeTiming[idx].hActive != *x)␊
188␉␉␉␉␉modeTiming[idx].hActive = *x;␊
189␉␉␉␊
190␉␉␉␉modeTiming[idx].vActive = *y;␊
191␉␉␉␊
192␉␉␉␉PRINT("%dx%d (%d %d %d %d ",␊
193␉␉␉␉␉ modeTiming[idx].hActive,␊
194␉␉␉␉␉ modeTiming[idx].vActive,␊
195␉␉␉␉␉ modeTiming[idx].hActive + modeTiming[idx].hSyncOffset,␊
196␉␉␉␉␉ modeTiming[idx].hActive + modeTiming[idx].hSyncOffset + modeTiming[idx].hSyncWidth,␊
197␉␉␉␉␉ modeTiming[idx].hActive + modeTiming[idx].hBlank,␊
198␉␉␉␉␉ modeTiming[idx].vActive + modeTiming[idx].vBlank);␊
199␉␉␉␊
200␉␉␉␉if ((modeTiming[idx].flags & HSyncPolarityMask) == HSyncPolarityMask)␊
201␉␉␉␉{␉PRINT("H- ");␉}␊
202␉␉␉␉else␊
203␉␉␉␉{␉PRINT("H+ ");␉}␊
204␊
205␉␉␉␉if ((modeTiming[idx].flags & VSyncPolarityMask) == VSyncPolarityMask)␊
206␉␉␉␉{␉PRINT("V-)\n");␉}␊
207␉␉␉␉else␊
208␉␉␉␉{␉PRINT("V+)\n");␉}␊
209␉␉␉}␊
210␉␉␉//returns the next mode in table␊
211␉␉␉*x = modeTiming[idx + 1].hActive;␊
212␉␉␉*y = modeTiming[idx + 1].vActive;␊
213␉␉␉␊
214␉␉␉idx++;␊
215␉␉}␊
216␉}␊
217␉return TRUE;␊
218}␊
219

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