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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␉␊
61␉␊
62␉if (nvModeline_2_Offset == (VBIOS_SIZE-1) || nvModeline_2_Offset == 0)␊
63␉{␊
64␉␉//If no second vesa table is available, free the corresponding table in chain␊
65␉␉free(table->next);␊
66␉␉table->next = NULL;␊
67␉␉PRINT("There is no Second Standard VESA Table to patch\n");␊
68␉} ␊
69␉else␊
70␉{␊
71␉␉table = table->next;␊
72␉␉table->pointer = map->biosPtr + nvModeline_2_Offset;␊
73␉␉PRINT("Second Standard VESA Table at offset 0x%x\n", (unsigned int)(table->pointer - map->biosPtr));␊
74␉}␊
75␉␊
76␉if (table->prev->pointer == NULL)␊
77␉{␊
78␉␉PRINT("Unable to locate the mode table.\n");␊
79␉␉PRINT("Please run the program 'dumpBios' as root and\n");␊
80␉␉PRINT("email the file 'vbios.dmp' to gaeloulacuisse@yahoo.fr.\n");␊
81␉␉␊
82␉␉closeVbios(map);␊
83␉␉return 0;␊
84␉}␊
85␉␊
86␉// reset the table pointer to the first in chain␊
87␉table = map->modeTables;␊
88␉␊
89␉/*␊
90␉ * for each table in chain, figure out how many modes are available␊
91␉ * and what is the size of the table␊
92␉ */␊
93␉while (table != NULL)␊
94␉{␊
95␉␉table->modeCount = 0;␊
96␉␉PRINT("Table #%d has ", table->id);␊
97␉␉␊
98␉␉if (table->id == MAIN_VESA_TABLE)␊
99␉␉{␊
100␉␉␉table->modeCount = stdVesa->header.tableSize & 0xff;␊
101␉␉␉if (table->modeCount == 0) table->modeCount = 16;␊
102␉␉␉table->size = table->modeCount * sizeof(nvModeline);␊
103␉␉}␊
104␉␉␊
105␉␉if (table->id == SECOND_VESA_TABLE)␊
106␉␉{␊
107␉␉␉nvModeline_2 * modePtr = (nvModeline_2 *)table->pointer;␊
108␉␉␉while (1)␊
109␉␉␉{␊
110␉␉␉␉if (modePtr[table->modeCount].hActive > 2048) break;␊
111␉␉␉␉table->modeCount++;␉␉␊
112␉␉␉}␊
113␉␉␉if (table->modeCount == 0) table->modeCount = 31;␊
114␉␉␉table->size = table->modeCount * sizeof(nvModeline_2);␊
115␉␉}␊
116␉␉␊
117␉␉PRINT("%d modes\n", table->modeCount);␊
118␉␉table = table->next;␊
119␉}␊
120␉␊
121␉map->setMode = nvidiaSetMode;␊
122␉␊
123␉saveTables(map->modeTables);␊
124␉␊
125#if AUTORES_DEBUG␊
126␉PRINT("Press Any Key...\n");␊
127␉getc();␊
128#endif␊
129␉␊
130␉return map;␊
131}␊
132␊
133bool nvidiaSetMode(sModeTable * table, uint8_t idx, uint32_t* x, uint32_t* y)␊
134{␊
135␉//In First VESA table, only first mode in table is patched␊
136␉if (table->id == MAIN_VESA_TABLE)␊
137␉{␊
138␉␉nvModeline * modeTiming = (nvModeline *)table->pointer;␊
139␉␉␊
140␉␉// patch only if mode differs and if the mode to patch isn't a console mode␊
141␉␉if (((*x != modeTiming[idx].hActive) || (*y != modeTiming[idx].vActive))␊
142␉␉␉&& (modeTiming[idx].hActive > 100))␊
143␉␉{␊
144␉␉␉␊
145␉␉␉PRINT("Mode %dx%d -> ", modeTiming[idx].hActive, modeTiming[idx].vActive);␊
146␉␉␉␊
147␉␉␉if (modeTiming[idx].hActive != *x)␊
148␉␉␉{␊
149␉␉␉␉modeTiming[idx].hActive = *x;␊
150␉␉␉␉modeTiming[idx].hActiveMinusOne = *x - 1;␊
151␉␉␉␉modeTiming[idx].hActiveMinusOne_ = *x - 1;␊
152␉␉␉}␊
153␉␉␉␊
154␉␉␉modeTiming[idx].vActive = *y;␊
155␉␉␉modeTiming[idx].vActiveMinusOne = *y - 1;␊
156␉␉␉modeTiming[idx].vActiveMinusOne_ = *y - 1;␊
157␉␉␉␊
158␉␉␉PRINT("%dx%d (%d %d %d %d %d %d)\n",␊
159␉␉␉␉ modeTiming[idx].hActive,␊
160␉␉␉␉ modeTiming[idx].vActive,␊
161␉␉␉␉ modeTiming[idx].hSyncStart,␊
162␉␉␉␉ modeTiming[idx].hSyncEnd,␊
163␉␉␉␉ modeTiming[idx].hTotal,␊
164␉␉␉␉ modeTiming[idx].vSyncStart,␊
165␉␉␉␉ modeTiming[idx].vSyncEnd,␊
166␉␉␉␉ modeTiming[idx].vTotal);␊
167␉␉}␊
168␉␉␊
169␉␉//Since we are only patching the first mode, this deprecated␊
170␉␉*x = modeTiming[idx + 1].hActive;␊
171␉␉*y = modeTiming[idx + 1].vActive;␊
172␉}␊
173␉␊
174␉if (table->id == SECOND_VESA_TABLE)␊
175␉{␊
176␉␉nvModeline_2 * modeTiming = (nvModeline_2 *) table->pointer;␊
177␉␉int h = *y;␊
178␉␉int w = *x;␊
179␉␉␊
180␉␉while (idx < table->modeCount)␊
181␉␉{␊
182␉␉␉*y = *x * h / w;␊
183␉␉␉//patch only different mode in table except console modes and 320 wide modes␊
184␉␉␉if (((*x != modeTiming[idx].hActive) || (*y != modeTiming[idx].vActive))␊
185␉␉␉␉&& (modeTiming[idx].hActive > 400))␊
186␉␉␉{␊
187␉␉␉␊
188␉␉␉␉PRINT("Mode %dx%d -> ", modeTiming[idx].hActive, modeTiming[idx].vActive);␊
189␉␉␉␊
190␉␉␉␉if (modeTiming[idx].hActive != *x)␊
191␉␉␉␉␉modeTiming[idx].hActive = *x;␊
192␉␉␉␊
193␉␉␉␉modeTiming[idx].vActive = *y;␊
194␉␉␉␊
195␉␉␉␉PRINT("%dx%d (%d %d %d %d ",␊
196␉␉␉␉␉ modeTiming[idx].hActive,␊
197␉␉␉␉␉ modeTiming[idx].vActive,␊
198␉␉␉␉␉ modeTiming[idx].hActive + modeTiming[idx].hSyncOffset,␊
199␉␉␉␉␉ modeTiming[idx].hActive + modeTiming[idx].hSyncOffset + modeTiming[idx].hSyncWidth,␊
200␉␉␉␉␉ modeTiming[idx].hActive + modeTiming[idx].hBlank,␊
201␉␉␉␉␉ modeTiming[idx].vActive + modeTiming[idx].vBlank);␊
202␉␉␉␊
203␉␉␉␉if ((modeTiming[idx].flags & HSyncPolarityMask) == HSyncPolarityMask)␊
204␉␉␉␉{␉PRINT("H- ");␉}␊
205␉␉␉␉else␊
206␉␉␉␉{␉PRINT("H+ ");␉}␊
207␊
208␉␉␉␉if ((modeTiming[idx].flags & VSyncPolarityMask) == VSyncPolarityMask)␊
209␉␉␉␉{␉PRINT("V-)\n");␉}␊
210␉␉␉␉else␊
211␉␉␉␉{␉PRINT("V+)\n");␉}␊
212␉␉␉}␊
213␉␉␉//returns the next mode in table␊
214␉␉␉*x = modeTiming[idx + 1].hActive;␊
215␉␉␉*y = modeTiming[idx + 1].vActive;␊
216␉␉␉␊
217␉␉␉idx++;␊
218␉␉}␊
219␉␉␊
220␉␉␊
221␉␉␊
222␉}␊
223␉return TRUE;␊
224}

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