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3631 lines · 104.9 KiB

1/* $XFree86$ */
2/* $XdotOrg$ */
3/*
4 * Mode initializing code (CRT1 section) for
5 * for SiS 300/305/540/630/730,
6 * SiS 315/550/[M]650/651/[M]661[FGM]X/[M]74x[GX]/330/[M]76x[GX],
7 * XGI Volari V3XT/V5/V8, Z7
8 * (Universal module for Linux kernel framebuffer and X.org/XFree86 4.x)
9 *
10 * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
11 *
12 * If distributed as part of the Linux kernel, the following license terms
13 * apply:
14 *
15 * * This program is free software; you can redistribute it and/or modify
16 * * it under the terms of the GNU General Public License as published by
17 * * the Free Software Foundation; either version 2 of the named License,
18 * * or any later version.
19 * *
20 * * This program is distributed in the hope that it will be useful,
21 * * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * * GNU General Public License for more details.
24 * *
25 * * You should have received a copy of the GNU General Public License
26 * * along with this program; if not, write to the Free Software
27 * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
28 *
29 * Otherwise, the following license terms apply:
30 *
31 * * Redistribution and use in source and binary forms, with or without
32 * * modification, are permitted provided that the following conditions
33 * * are met:
34 * * 1) Redistributions of source code must retain the above copyright
35 * * notice, this list of conditions and the following disclaimer.
36 * * 2) Redistributions in binary form must reproduce the above copyright
37 * * notice, this list of conditions and the following disclaimer in the
38 * * documentation and/or other materials provided with the distribution.
39 * * 3) The name of the author may not be used to endorse or promote products
40 * * derived from this software without specific prior written permission.
41 * *
42 * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
43 * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
44 * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
45 * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
46 * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
47 * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
48 * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
49 * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
50 * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
51 * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
52 *
53 * Author: Thomas Winischhofer <[email protected]>
54 *
55 * Formerly based on non-functional code-fragements for 300 series by SiS, Inc.
56 * Used by permission.
57 */
58
59#include "init.h"
60
61#ifdef CONFIG_FB_SIS_300
62#include "300vtbl.h"
63#endif
64
65#ifdef CONFIG_FB_SIS_315
66#include "310vtbl.h"
67#endif
68
69#if defined(ALLOC_PRAGMA)
70#pragma alloc_text(PAGE,SiSSetMode)
71#endif
72
73/*********************************************/
74/* POINTER INITIALIZATION */
75/*********************************************/
76
77#if defined(CONFIG_FB_SIS_300) || defined(CONFIG_FB_SIS_315)
78static void
79InitCommonPointer(struct SiS_Private *SiS_Pr)
80{
81 SiS_Pr->SiS_SModeIDTable = SiS_SModeIDTable;
82 SiS_Pr->SiS_StResInfo = SiS_StResInfo;
83 SiS_Pr->SiS_ModeResInfo = SiS_ModeResInfo;
84 SiS_Pr->SiS_StandTable = SiS_StandTable;
85
86 SiS_Pr->SiS_NTSCTiming = SiS_NTSCTiming;
87 SiS_Pr->SiS_PALTiming = SiS_PALTiming;
88 SiS_Pr->SiS_HiTVSt1Timing = SiS_HiTVSt1Timing;
89 SiS_Pr->SiS_HiTVSt2Timing = SiS_HiTVSt2Timing;
90
91 SiS_Pr->SiS_HiTVExtTiming = SiS_HiTVExtTiming;
92 SiS_Pr->SiS_HiTVGroup3Data = SiS_HiTVGroup3Data;
93 SiS_Pr->SiS_HiTVGroup3Simu = SiS_HiTVGroup3Simu;
94#if 0
95 SiS_Pr->SiS_HiTVTextTiming = SiS_HiTVTextTiming;
96 SiS_Pr->SiS_HiTVGroup3Text = SiS_HiTVGroup3Text;
97#endif
98
99 SiS_Pr->SiS_StPALData = SiS_StPALData;
100 SiS_Pr->SiS_ExtPALData = SiS_ExtPALData;
101 SiS_Pr->SiS_StNTSCData = SiS_StNTSCData;
102 SiS_Pr->SiS_ExtNTSCData = SiS_ExtNTSCData;
103 SiS_Pr->SiS_St1HiTVData = SiS_StHiTVData;
104 SiS_Pr->SiS_St2HiTVData = SiS_St2HiTVData;
105 SiS_Pr->SiS_ExtHiTVData = SiS_ExtHiTVData;
106 SiS_Pr->SiS_St525iData = SiS_StNTSCData;
107 SiS_Pr->SiS_St525pData = SiS_St525pData;
108 SiS_Pr->SiS_St750pData = SiS_St750pData;
109 SiS_Pr->SiS_Ext525iData = SiS_ExtNTSCData;
110 SiS_Pr->SiS_Ext525pData = SiS_ExtNTSCData;
111 SiS_Pr->SiS_Ext750pData = SiS_Ext750pData;
112
113 SiS_Pr->pSiS_OutputSelect = &SiS_OutputSelect;
114 SiS_Pr->pSiS_SoftSetting = &SiS_SoftSetting;
115
116 SiS_Pr->SiS_LCD1280x720Data = SiS_LCD1280x720Data;
117 SiS_Pr->SiS_StLCD1280x768_2Data = SiS_StLCD1280x768_2Data;
118 SiS_Pr->SiS_ExtLCD1280x768_2Data = SiS_ExtLCD1280x768_2Data;
119 SiS_Pr->SiS_LCD1280x800Data = SiS_LCD1280x800Data;
120 SiS_Pr->SiS_LCD1280x800_2Data = SiS_LCD1280x800_2Data;
121 SiS_Pr->SiS_LCD1280x854Data = SiS_LCD1280x854Data;
122 SiS_Pr->SiS_LCD1280x960Data = SiS_LCD1280x960Data;
123 SiS_Pr->SiS_StLCD1400x1050Data = SiS_StLCD1400x1050Data;
124 SiS_Pr->SiS_ExtLCD1400x1050Data = SiS_ExtLCD1400x1050Data;
125 SiS_Pr->SiS_LCD1680x1050Data = SiS_LCD1680x1050Data;
126 SiS_Pr->SiS_StLCD1600x1200Data = SiS_StLCD1600x1200Data;
127 SiS_Pr->SiS_ExtLCD1600x1200Data = SiS_ExtLCD1600x1200Data;
128 SiS_Pr->SiS_NoScaleData = SiS_NoScaleData;
129
130 SiS_Pr->SiS_LVDS320x240Data_1 = SiS_LVDS320x240Data_1;
131 SiS_Pr->SiS_LVDS320x240Data_2 = SiS_LVDS320x240Data_2;
132 SiS_Pr->SiS_LVDS640x480Data_1 = SiS_LVDS640x480Data_1;
133 SiS_Pr->SiS_LVDS800x600Data_1 = SiS_LVDS800x600Data_1;
134 SiS_Pr->SiS_LVDS1024x600Data_1 = SiS_LVDS1024x600Data_1;
135 SiS_Pr->SiS_LVDS1024x768Data_1 = SiS_LVDS1024x768Data_1;
136
137 SiS_Pr->SiS_LVDSCRT1320x240_1 = SiS_LVDSCRT1320x240_1;
138 SiS_Pr->SiS_LVDSCRT1320x240_2 = SiS_LVDSCRT1320x240_2;
139 SiS_Pr->SiS_LVDSCRT1320x240_2_H = SiS_LVDSCRT1320x240_2_H;
140 SiS_Pr->SiS_LVDSCRT1320x240_3 = SiS_LVDSCRT1320x240_3;
141 SiS_Pr->SiS_LVDSCRT1320x240_3_H = SiS_LVDSCRT1320x240_3_H;
142 SiS_Pr->SiS_LVDSCRT1640x480_1 = SiS_LVDSCRT1640x480_1;
143 SiS_Pr->SiS_LVDSCRT1640x480_1_H = SiS_LVDSCRT1640x480_1_H;
144#if 0
145 SiS_Pr->SiS_LVDSCRT11024x600_1 = SiS_LVDSCRT11024x600_1;
146 SiS_Pr->SiS_LVDSCRT11024x600_1_H = SiS_LVDSCRT11024x600_1_H;
147 SiS_Pr->SiS_LVDSCRT11024x600_2 = SiS_LVDSCRT11024x600_2;
148 SiS_Pr->SiS_LVDSCRT11024x600_2_H = SiS_LVDSCRT11024x600_2_H;
149#endif
150
151 SiS_Pr->SiS_CHTVUNTSCData = SiS_CHTVUNTSCData;
152 SiS_Pr->SiS_CHTVONTSCData = SiS_CHTVONTSCData;
153
154 SiS_Pr->SiS_PanelMinLVDS = Panel_800x600; /* lowest value LVDS/LCDA */
155 SiS_Pr->SiS_PanelMin301 = Panel_1024x768; /* lowest value 301 */
156}
157#endif
158
159#ifdef CONFIG_FB_SIS_300
160static void
161InitTo300Pointer(struct SiS_Private *SiS_Pr)
162{
163 InitCommonPointer(SiS_Pr);
164
165 SiS_Pr->SiS_VBModeIDTable = SiS300_VBModeIDTable;
166 SiS_Pr->SiS_EModeIDTable = SiS300_EModeIDTable;
167 SiS_Pr->SiS_RefIndex = SiS300_RefIndex;
168 SiS_Pr->SiS_CRT1Table = SiS300_CRT1Table;
169 if(SiS_Pr->ChipType == SIS_300) {
170 SiS_Pr->SiS_MCLKData_0 = SiS300_MCLKData_300; /* 300 */
171 } else {
172 SiS_Pr->SiS_MCLKData_0 = SiS300_MCLKData_630; /* 630, 730 */
173 }
174 SiS_Pr->SiS_VCLKData = SiS300_VCLKData;
175 SiS_Pr->SiS_VBVCLKData = (struct SiS_VBVCLKData *)SiS300_VCLKData;
176
177 SiS_Pr->SiS_SR15 = SiS300_SR15;
178
179 SiS_Pr->SiS_PanelDelayTbl = SiS300_PanelDelayTbl;
180 SiS_Pr->SiS_PanelDelayTblLVDS = SiS300_PanelDelayTbl;
181
182 SiS_Pr->SiS_ExtLCD1024x768Data = SiS300_ExtLCD1024x768Data;
183 SiS_Pr->SiS_St2LCD1024x768Data = SiS300_St2LCD1024x768Data;
184 SiS_Pr->SiS_ExtLCD1280x1024Data = SiS300_ExtLCD1280x1024Data;
185 SiS_Pr->SiS_St2LCD1280x1024Data = SiS300_St2LCD1280x1024Data;
186
187 SiS_Pr->SiS_CRT2Part2_1024x768_1 = SiS300_CRT2Part2_1024x768_1;
188 SiS_Pr->SiS_CRT2Part2_1024x768_2 = SiS300_CRT2Part2_1024x768_2;
189 SiS_Pr->SiS_CRT2Part2_1024x768_3 = SiS300_CRT2Part2_1024x768_3;
190
191 SiS_Pr->SiS_CHTVUPALData = SiS300_CHTVUPALData;
192 SiS_Pr->SiS_CHTVOPALData = SiS300_CHTVOPALData;
193 SiS_Pr->SiS_CHTVUPALMData = SiS_CHTVUNTSCData; /* not supported on 300 series */
194 SiS_Pr->SiS_CHTVOPALMData = SiS_CHTVONTSCData; /* not supported on 300 series */
195 SiS_Pr->SiS_CHTVUPALNData = SiS300_CHTVUPALData; /* not supported on 300 series */
196 SiS_Pr->SiS_CHTVOPALNData = SiS300_CHTVOPALData; /* not supported on 300 series */
197 SiS_Pr->SiS_CHTVSOPALData = SiS300_CHTVSOPALData;
198
199 SiS_Pr->SiS_LVDS848x480Data_1 = SiS300_LVDS848x480Data_1;
200 SiS_Pr->SiS_LVDS848x480Data_2 = SiS300_LVDS848x480Data_2;
201 SiS_Pr->SiS_LVDSBARCO1024Data_1 = SiS300_LVDSBARCO1024Data_1;
202 SiS_Pr->SiS_LVDSBARCO1366Data_1 = SiS300_LVDSBARCO1366Data_1;
203 SiS_Pr->SiS_LVDSBARCO1366Data_2 = SiS300_LVDSBARCO1366Data_2;
204
205 SiS_Pr->SiS_PanelType04_1a = SiS300_PanelType04_1a;
206 SiS_Pr->SiS_PanelType04_2a = SiS300_PanelType04_2a;
207 SiS_Pr->SiS_PanelType04_1b = SiS300_PanelType04_1b;
208 SiS_Pr->SiS_PanelType04_2b = SiS300_PanelType04_2b;
209
210 SiS_Pr->SiS_CHTVCRT1UNTSC = SiS300_CHTVCRT1UNTSC;
211 SiS_Pr->SiS_CHTVCRT1ONTSC = SiS300_CHTVCRT1ONTSC;
212 SiS_Pr->SiS_CHTVCRT1UPAL = SiS300_CHTVCRT1UPAL;
213 SiS_Pr->SiS_CHTVCRT1OPAL = SiS300_CHTVCRT1OPAL;
214 SiS_Pr->SiS_CHTVCRT1SOPAL = SiS300_CHTVCRT1SOPAL;
215 SiS_Pr->SiS_CHTVReg_UNTSC = SiS300_CHTVReg_UNTSC;
216 SiS_Pr->SiS_CHTVReg_ONTSC = SiS300_CHTVReg_ONTSC;
217 SiS_Pr->SiS_CHTVReg_UPAL = SiS300_CHTVReg_UPAL;
218 SiS_Pr->SiS_CHTVReg_OPAL = SiS300_CHTVReg_OPAL;
219 SiS_Pr->SiS_CHTVReg_UPALM = SiS300_CHTVReg_UNTSC; /* not supported on 300 series */
220 SiS_Pr->SiS_CHTVReg_OPALM = SiS300_CHTVReg_ONTSC; /* not supported on 300 series */
221 SiS_Pr->SiS_CHTVReg_UPALN = SiS300_CHTVReg_UPAL; /* not supported on 300 series */
222 SiS_Pr->SiS_CHTVReg_OPALN = SiS300_CHTVReg_OPAL; /* not supported on 300 series */
223 SiS_Pr->SiS_CHTVReg_SOPAL = SiS300_CHTVReg_SOPAL;
224 SiS_Pr->SiS_CHTVVCLKUNTSC = SiS300_CHTVVCLKUNTSC;
225 SiS_Pr->SiS_CHTVVCLKONTSC = SiS300_CHTVVCLKONTSC;
226 SiS_Pr->SiS_CHTVVCLKUPAL = SiS300_CHTVVCLKUPAL;
227 SiS_Pr->SiS_CHTVVCLKOPAL = SiS300_CHTVVCLKOPAL;
228 SiS_Pr->SiS_CHTVVCLKUPALM = SiS300_CHTVVCLKUNTSC; /* not supported on 300 series */
229 SiS_Pr->SiS_CHTVVCLKOPALM = SiS300_CHTVVCLKONTSC; /* not supported on 300 series */
230 SiS_Pr->SiS_CHTVVCLKUPALN = SiS300_CHTVVCLKUPAL; /* not supported on 300 series */
231 SiS_Pr->SiS_CHTVVCLKOPALN = SiS300_CHTVVCLKOPAL; /* not supported on 300 series */
232 SiS_Pr->SiS_CHTVVCLKSOPAL = SiS300_CHTVVCLKSOPAL;
233}
234#endif
235
236#ifdef CONFIG_FB_SIS_315
237static void
238InitTo310Pointer(struct SiS_Private *SiS_Pr)
239{
240 InitCommonPointer(SiS_Pr);
241
242 SiS_Pr->SiS_EModeIDTable = SiS310_EModeIDTable;
243 SiS_Pr->SiS_RefIndex = SiS310_RefIndex;
244 SiS_Pr->SiS_CRT1Table = SiS310_CRT1Table;
245 if(SiS_Pr->ChipType >= SIS_340) {
246 SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_340; /* 340 + XGI */
247 } else if(SiS_Pr->ChipType >= SIS_761) {
248 SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_761; /* 761 - preliminary */
249 } else if(SiS_Pr->ChipType >= SIS_760) {
250 SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_760; /* 760 */
251 } else if(SiS_Pr->ChipType >= SIS_661) {
252 SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_660; /* 661/741 */
253 } else if(SiS_Pr->ChipType == SIS_330) {
254 SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_330; /* 330 */
255 } else if(SiS_Pr->ChipType > SIS_315PRO) {
256 SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_650; /* 550, 650, 740 */
257 } else {
258 SiS_Pr->SiS_MCLKData_0 = SiS310_MCLKData_0_315; /* 315 */
259 }
260 if(SiS_Pr->ChipType >= SIS_340) {
261 SiS_Pr->SiS_MCLKData_1 = SiS310_MCLKData_1_340;
262 } else {
263 SiS_Pr->SiS_MCLKData_1 = SiS310_MCLKData_1;
264 }
265 SiS_Pr->SiS_VCLKData = SiS310_VCLKData;
266 SiS_Pr->SiS_VBVCLKData = SiS310_VBVCLKData;
267
268 SiS_Pr->SiS_SR15 = SiS310_SR15;
269
270 SiS_Pr->SiS_PanelDelayTbl = SiS310_PanelDelayTbl;
271 SiS_Pr->SiS_PanelDelayTblLVDS = SiS310_PanelDelayTblLVDS;
272
273 SiS_Pr->SiS_St2LCD1024x768Data = SiS310_St2LCD1024x768Data;
274 SiS_Pr->SiS_ExtLCD1024x768Data = SiS310_ExtLCD1024x768Data;
275 SiS_Pr->SiS_St2LCD1280x1024Data = SiS310_St2LCD1280x1024Data;
276 SiS_Pr->SiS_ExtLCD1280x1024Data = SiS310_ExtLCD1280x1024Data;
277
278 SiS_Pr->SiS_CRT2Part2_1024x768_1 = SiS310_CRT2Part2_1024x768_1;
279
280 SiS_Pr->SiS_CHTVUPALData = SiS310_CHTVUPALData;
281 SiS_Pr->SiS_CHTVOPALData = SiS310_CHTVOPALData;
282 SiS_Pr->SiS_CHTVUPALMData = SiS310_CHTVUPALMData;
283 SiS_Pr->SiS_CHTVOPALMData = SiS310_CHTVOPALMData;
284 SiS_Pr->SiS_CHTVUPALNData = SiS310_CHTVUPALNData;
285 SiS_Pr->SiS_CHTVOPALNData = SiS310_CHTVOPALNData;
286 SiS_Pr->SiS_CHTVSOPALData = SiS310_CHTVSOPALData;
287
288 SiS_Pr->SiS_CHTVCRT1UNTSC = SiS310_CHTVCRT1UNTSC;
289 SiS_Pr->SiS_CHTVCRT1ONTSC = SiS310_CHTVCRT1ONTSC;
290 SiS_Pr->SiS_CHTVCRT1UPAL = SiS310_CHTVCRT1UPAL;
291 SiS_Pr->SiS_CHTVCRT1OPAL = SiS310_CHTVCRT1OPAL;
292 SiS_Pr->SiS_CHTVCRT1SOPAL = SiS310_CHTVCRT1OPAL;
293
294 SiS_Pr->SiS_CHTVReg_UNTSC = SiS310_CHTVReg_UNTSC;
295 SiS_Pr->SiS_CHTVReg_ONTSC = SiS310_CHTVReg_ONTSC;
296 SiS_Pr->SiS_CHTVReg_UPAL = SiS310_CHTVReg_UPAL;
297 SiS_Pr->SiS_CHTVReg_OPAL = SiS310_CHTVReg_OPAL;
298 SiS_Pr->SiS_CHTVReg_UPALM = SiS310_CHTVReg_UPALM;
299 SiS_Pr->SiS_CHTVReg_OPALM = SiS310_CHTVReg_OPALM;
300 SiS_Pr->SiS_CHTVReg_UPALN = SiS310_CHTVReg_UPALN;
301 SiS_Pr->SiS_CHTVReg_OPALN = SiS310_CHTVReg_OPALN;
302 SiS_Pr->SiS_CHTVReg_SOPAL = SiS310_CHTVReg_OPAL;
303
304 SiS_Pr->SiS_CHTVVCLKUNTSC = SiS310_CHTVVCLKUNTSC;
305 SiS_Pr->SiS_CHTVVCLKONTSC = SiS310_CHTVVCLKONTSC;
306 SiS_Pr->SiS_CHTVVCLKUPAL = SiS310_CHTVVCLKUPAL;
307 SiS_Pr->SiS_CHTVVCLKOPAL = SiS310_CHTVVCLKOPAL;
308 SiS_Pr->SiS_CHTVVCLKUPALM = SiS310_CHTVVCLKUPALM;
309 SiS_Pr->SiS_CHTVVCLKOPALM = SiS310_CHTVVCLKOPALM;
310 SiS_Pr->SiS_CHTVVCLKUPALN = SiS310_CHTVVCLKUPALN;
311 SiS_Pr->SiS_CHTVVCLKOPALN = SiS310_CHTVVCLKOPALN;
312 SiS_Pr->SiS_CHTVVCLKSOPAL = SiS310_CHTVVCLKOPAL;
313}
314#endif
315
316bool
317SiSInitPtr(struct SiS_Private *SiS_Pr)
318{
319 if(SiS_Pr->ChipType < SIS_315H) {
320#ifdef CONFIG_FB_SIS_300
321 InitTo300Pointer(SiS_Pr);
322#else
323 return false;
324#endif
325 } else {
326#ifdef CONFIG_FB_SIS_315
327 InitTo310Pointer(SiS_Pr);
328#else
329 return false;
330#endif
331 }
332 return true;
333}
334
335/*********************************************/
336/* HELPER: Get ModeID */
337/*********************************************/
338
339static
340unsigned short
341SiS_GetModeID(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay,
342 int Depth, bool FSTN, int LCDwidth, int LCDheight)
343{
344 unsigned short ModeIndex = 0;
345
346 switch(HDisplay)
347 {
348 case 320:
349 if(VDisplay == 200) ModeIndex = ModeIndex_320x200[Depth];
350 else if(VDisplay == 240) {
351 if((VBFlags & CRT2_LCD) && (FSTN))
352 ModeIndex = ModeIndex_320x240_FSTN[Depth];
353 else
354 ModeIndex = ModeIndex_320x240[Depth];
355 }
356 break;
357 case 400:
358 if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 800) && (LCDheight >= 600))) {
359 if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
360 }
361 break;
362 case 512:
363 if((!(VBFlags & CRT1_LCDA)) || ((LCDwidth >= 1024) && (LCDheight >= 768))) {
364 if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
365 }
366 break;
367 case 640:
368 if(VDisplay == 480) ModeIndex = ModeIndex_640x480[Depth];
369 else if(VDisplay == 400) ModeIndex = ModeIndex_640x400[Depth];
370 break;
371 case 720:
372 if(VDisplay == 480) ModeIndex = ModeIndex_720x480[Depth];
373 else if(VDisplay == 576) ModeIndex = ModeIndex_720x576[Depth];
374 break;
375 case 768:
376 if(VDisplay == 576) ModeIndex = ModeIndex_768x576[Depth];
377 break;
378 case 800:
379 if(VDisplay == 600) ModeIndex = ModeIndex_800x600[Depth];
380 else if(VDisplay == 480) ModeIndex = ModeIndex_800x480[Depth];
381 break;
382 case 848:
383 if(VDisplay == 480) ModeIndex = ModeIndex_848x480[Depth];
384 break;
385 case 856:
386 if(VDisplay == 480) ModeIndex = ModeIndex_856x480[Depth];
387 break;
388 case 960:
389 if(VGAEngine == SIS_315_VGA) {
390 if(VDisplay == 540) ModeIndex = ModeIndex_960x540[Depth];
391 else if(VDisplay == 600) ModeIndex = ModeIndex_960x600[Depth];
392 }
393 break;
394 case 1024:
395 if(VDisplay == 576) ModeIndex = ModeIndex_1024x576[Depth];
396 else if(VDisplay == 768) ModeIndex = ModeIndex_1024x768[Depth];
397 else if(VGAEngine == SIS_300_VGA) {
398 if(VDisplay == 600) ModeIndex = ModeIndex_1024x600[Depth];
399 }
400 break;
401 case 1152:
402 if(VDisplay == 864) ModeIndex = ModeIndex_1152x864[Depth];
403 if(VGAEngine == SIS_300_VGA) {
404 if(VDisplay == 768) ModeIndex = ModeIndex_1152x768[Depth];
405 }
406 break;
407 case 1280:
408 switch(VDisplay) {
409 case 720:
410 ModeIndex = ModeIndex_1280x720[Depth];
411 break;
412 case 768:
413 if(VGAEngine == SIS_300_VGA) {
414 ModeIndex = ModeIndex_300_1280x768[Depth];
415 } else {
416 ModeIndex = ModeIndex_310_1280x768[Depth];
417 }
418 break;
419 case 800:
420 if(VGAEngine == SIS_315_VGA) {
421 ModeIndex = ModeIndex_1280x800[Depth];
422 }
423 break;
424 case 854:
425 if(VGAEngine == SIS_315_VGA) {
426 ModeIndex = ModeIndex_1280x854[Depth];
427 }
428 break;
429 case 960:
430 ModeIndex = ModeIndex_1280x960[Depth];
431 break;
432 case 1024:
433 ModeIndex = ModeIndex_1280x1024[Depth];
434 break;
435 }
436 break;
437 case 1360:
438 if(VDisplay == 768) ModeIndex = ModeIndex_1360x768[Depth];
439 if(VGAEngine == SIS_300_VGA) {
440 if(VDisplay == 1024) ModeIndex = ModeIndex_300_1360x1024[Depth];
441 }
442 break;
443 case 1400:
444 if(VGAEngine == SIS_315_VGA) {
445 if(VDisplay == 1050) {
446 ModeIndex = ModeIndex_1400x1050[Depth];
447 }
448 }
449 break;
450 case 1600:
451 if(VDisplay == 1200) ModeIndex = ModeIndex_1600x1200[Depth];
452 break;
453 case 1680:
454 if(VGAEngine == SIS_315_VGA) {
455 if(VDisplay == 1050) ModeIndex = ModeIndex_1680x1050[Depth];
456 }
457 break;
458 case 1920:
459 if(VDisplay == 1440) ModeIndex = ModeIndex_1920x1440[Depth];
460 else if(VGAEngine == SIS_315_VGA) {
461 if(VDisplay == 1080) ModeIndex = ModeIndex_1920x1080[Depth];
462 }
463 break;
464 case 2048:
465 if(VDisplay == 1536) {
466 if(VGAEngine == SIS_300_VGA) {
467 ModeIndex = ModeIndex_300_2048x1536[Depth];
468 } else {
469 ModeIndex = ModeIndex_310_2048x1536[Depth];
470 }
471 }
472 break;
473 }
474
475 return ModeIndex;
476}
477
478unsigned short
479SiS_GetModeID_LCD(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay,
480 int Depth, bool FSTN, unsigned short CustomT, int LCDwidth, int LCDheight,
481 unsigned int VBFlags2)
482{
483 unsigned short ModeIndex = 0;
484
485 if(VBFlags2 & (VB2_LVDS | VB2_30xBDH)) {
486
487 switch(HDisplay)
488 {
489 case 320:
490 if((CustomT != CUT_PANEL848) && (CustomT != CUT_PANEL856)) {
491 if(VDisplay == 200) {
492 if(!FSTN) ModeIndex = ModeIndex_320x200[Depth];
493 } else if(VDisplay == 240) {
494 if(!FSTN) ModeIndex = ModeIndex_320x240[Depth];
495 else if(VGAEngine == SIS_315_VGA) {
496 ModeIndex = ModeIndex_320x240_FSTN[Depth];
497 }
498 }
499 }
500 break;
501 case 400:
502 if((CustomT != CUT_PANEL848) && (CustomT != CUT_PANEL856)) {
503 if(!((VGAEngine == SIS_300_VGA) && (VBFlags2 & VB2_TRUMPION))) {
504 if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
505 }
506 }
507 break;
508 case 512:
509 if((CustomT != CUT_PANEL848) && (CustomT != CUT_PANEL856)) {
510 if(!((VGAEngine == SIS_300_VGA) && (VBFlags2 & VB2_TRUMPION))) {
511 if(LCDwidth >= 1024 && LCDwidth != 1152 && LCDheight >= 768) {
512 if(VDisplay == 384) {
513 ModeIndex = ModeIndex_512x384[Depth];
514 }
515 }
516 }
517 }
518 break;
519 case 640:
520 if(VDisplay == 480) ModeIndex = ModeIndex_640x480[Depth];
521 else if(VDisplay == 400) {
522 if((CustomT != CUT_PANEL848) && (CustomT != CUT_PANEL856))
523 ModeIndex = ModeIndex_640x400[Depth];
524 }
525 break;
526 case 800:
527 if(VDisplay == 600) ModeIndex = ModeIndex_800x600[Depth];
528 break;
529 case 848:
530 if(CustomT == CUT_PANEL848) {
531 if(VDisplay == 480) ModeIndex = ModeIndex_848x480[Depth];
532 }
533 break;
534 case 856:
535 if(CustomT == CUT_PANEL856) {
536 if(VDisplay == 480) ModeIndex = ModeIndex_856x480[Depth];
537 }
538 break;
539 case 1024:
540 if(VDisplay == 768) ModeIndex = ModeIndex_1024x768[Depth];
541 else if(VGAEngine == SIS_300_VGA) {
542 if((VDisplay == 600) && (LCDheight == 600)) {
543 ModeIndex = ModeIndex_1024x600[Depth];
544 }
545 }
546 break;
547 case 1152:
548 if(VGAEngine == SIS_300_VGA) {
549 if((VDisplay == 768) && (LCDheight == 768)) {
550 ModeIndex = ModeIndex_1152x768[Depth];
551 }
552 }
553 break;
554 case 1280:
555 if(VDisplay == 1024) ModeIndex = ModeIndex_1280x1024[Depth];
556 else if(VGAEngine == SIS_315_VGA) {
557 if((VDisplay == 768) && (LCDheight == 768)) {
558 ModeIndex = ModeIndex_310_1280x768[Depth];
559 }
560 }
561 break;
562 case 1360:
563 if(VGAEngine == SIS_300_VGA) {
564 if(CustomT == CUT_BARCO1366) {
565 if(VDisplay == 1024) ModeIndex = ModeIndex_300_1360x1024[Depth];
566 }
567 }
568 if(CustomT == CUT_PANEL848) {
569 if(VDisplay == 768) ModeIndex = ModeIndex_1360x768[Depth];
570 }
571 break;
572 case 1400:
573 if(VGAEngine == SIS_315_VGA) {
574 if(VDisplay == 1050) ModeIndex = ModeIndex_1400x1050[Depth];
575 }
576 break;
577 case 1600:
578 if(VGAEngine == SIS_315_VGA) {
579 if(VDisplay == 1200) ModeIndex = ModeIndex_1600x1200[Depth];
580 }
581 break;
582 }
583
584 } else if(VBFlags2 & VB2_SISBRIDGE) {
585
586 switch(HDisplay)
587 {
588 case 320:
589 if(VDisplay == 200) ModeIndex = ModeIndex_320x200[Depth];
590 else if(VDisplay == 240) ModeIndex = ModeIndex_320x240[Depth];
591 break;
592 case 400:
593 if(LCDwidth >= 800 && LCDheight >= 600) {
594 if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
595 }
596 break;
597 case 512:
598 if(LCDwidth >= 1024 && LCDheight >= 768 && LCDwidth != 1152) {
599 if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
600 }
601 break;
602 case 640:
603 if(VDisplay == 480) ModeIndex = ModeIndex_640x480[Depth];
604 else if(VDisplay == 400) ModeIndex = ModeIndex_640x400[Depth];
605 break;
606 case 720:
607 if(VGAEngine == SIS_315_VGA) {
608 if(VDisplay == 480) ModeIndex = ModeIndex_720x480[Depth];
609 else if(VDisplay == 576) ModeIndex = ModeIndex_720x576[Depth];
610 }
611 break;
612 case 768:
613 if(VGAEngine == SIS_315_VGA) {
614 if(VDisplay == 576) ModeIndex = ModeIndex_768x576[Depth];
615 }
616 break;
617 case 800:
618 if(VDisplay == 600) ModeIndex = ModeIndex_800x600[Depth];
619 if(VGAEngine == SIS_315_VGA) {
620 if(VDisplay == 480) ModeIndex = ModeIndex_800x480[Depth];
621 }
622 break;
623 case 848:
624 if(VGAEngine == SIS_315_VGA) {
625 if(VDisplay == 480) ModeIndex = ModeIndex_848x480[Depth];
626 }
627 break;
628 case 856:
629 if(VGAEngine == SIS_315_VGA) {
630 if(VDisplay == 480) ModeIndex = ModeIndex_856x480[Depth];
631 }
632 break;
633 case 960:
634 if(VGAEngine == SIS_315_VGA) {
635 if(VDisplay == 540) ModeIndex = ModeIndex_960x540[Depth];
636 else if(VDisplay == 600) ModeIndex = ModeIndex_960x600[Depth];
637 }
638 break;
639 case 1024:
640 if(VDisplay == 768) ModeIndex = ModeIndex_1024x768[Depth];
641 if(VGAEngine == SIS_315_VGA) {
642 if(VDisplay == 576) ModeIndex = ModeIndex_1024x576[Depth];
643 }
644 break;
645 case 1152:
646 if(VGAEngine == SIS_315_VGA) {
647 if(VDisplay == 864) ModeIndex = ModeIndex_1152x864[Depth];
648 }
649 break;
650 case 1280:
651 switch(VDisplay) {
652 case 720:
653 ModeIndex = ModeIndex_1280x720[Depth];
654 break;
655 case 768:
656 if(VGAEngine == SIS_300_VGA) {
657 ModeIndex = ModeIndex_300_1280x768[Depth];
658 } else {
659 ModeIndex = ModeIndex_310_1280x768[Depth];
660 }
661 break;
662 case 800:
663 if(VGAEngine == SIS_315_VGA) {
664 ModeIndex = ModeIndex_1280x800[Depth];
665 }
666 break;
667 case 854:
668 if(VGAEngine == SIS_315_VGA) {
669 ModeIndex = ModeIndex_1280x854[Depth];
670 }
671 break;
672 case 960:
673 ModeIndex = ModeIndex_1280x960[Depth];
674 break;
675 case 1024:
676 ModeIndex = ModeIndex_1280x1024[Depth];
677 break;
678 }
679 break;
680 case 1360:
681 if(VGAEngine == SIS_315_VGA) { /* OVER1280 only? */
682 if(VDisplay == 768) ModeIndex = ModeIndex_1360x768[Depth];
683 }
684 break;
685 case 1400:
686 if(VGAEngine == SIS_315_VGA) {
687 if(VBFlags2 & VB2_LCDOVER1280BRIDGE) {
688 if(VDisplay == 1050) ModeIndex = ModeIndex_1400x1050[Depth];
689 }
690 }
691 break;
692 case 1600:
693 if(VGAEngine == SIS_315_VGA) {
694 if(VBFlags2 & VB2_LCDOVER1280BRIDGE) {
695 if(VDisplay == 1200) ModeIndex = ModeIndex_1600x1200[Depth];
696 }
697 }
698 break;
699#ifndef VB_FORBID_CRT2LCD_OVER_1600
700 case 1680:
701 if(VGAEngine == SIS_315_VGA) {
702 if(VBFlags2 & VB2_LCDOVER1280BRIDGE) {
703 if(VDisplay == 1050) ModeIndex = ModeIndex_1680x1050[Depth];
704 }
705 }
706 break;
707 case 1920:
708 if(VGAEngine == SIS_315_VGA) {
709 if(VBFlags2 & VB2_LCDOVER1600BRIDGE) {
710 if(VDisplay == 1440) ModeIndex = ModeIndex_1920x1440[Depth];
711 }
712 }
713 break;
714 case 2048:
715 if(VGAEngine == SIS_315_VGA) {
716 if(VBFlags2 & VB2_LCDOVER1600BRIDGE) {
717 if(VDisplay == 1536) ModeIndex = ModeIndex_310_2048x1536[Depth];
718 }
719 }
720 break;
721#endif
722 }
723 }
724
725 return ModeIndex;
726}
727
728unsigned short
729SiS_GetModeID_TV(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay, int Depth,
730 unsigned int VBFlags2)
731{
732 unsigned short ModeIndex = 0;
733
734 if(VBFlags2 & VB2_CHRONTEL) {
735
736 switch(HDisplay)
737 {
738 case 512:
739 if(VGAEngine == SIS_315_VGA) {
740 if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
741 }
742 break;
743 case 640:
744 if(VDisplay == 480) ModeIndex = ModeIndex_640x480[Depth];
745 else if(VDisplay == 400) ModeIndex = ModeIndex_640x400[Depth];
746 break;
747 case 800:
748 if(VDisplay == 600) ModeIndex = ModeIndex_800x600[Depth];
749 break;
750 case 1024:
751 if(VGAEngine == SIS_315_VGA) {
752 if(VDisplay == 768) ModeIndex = ModeIndex_1024x768[Depth];
753 }
754 break;
755 }
756
757 } else if(VBFlags2 & VB2_SISTVBRIDGE) {
758
759 switch(HDisplay)
760 {
761 case 320:
762 if(VDisplay == 200) ModeIndex = ModeIndex_320x200[Depth];
763 else if(VDisplay == 240) ModeIndex = ModeIndex_320x240[Depth];
764 break;
765 case 400:
766 if(VDisplay == 300) ModeIndex = ModeIndex_400x300[Depth];
767 break;
768 case 512:
769 if( ((VBFlags & TV_YPBPR) && (VBFlags & (TV_YPBPR750P | TV_YPBPR1080I))) ||
770 (VBFlags & TV_HIVISION) ||
771 ((!(VBFlags & (TV_YPBPR | TV_PALM))) && (VBFlags & TV_PAL)) ) {
772 if(VDisplay == 384) ModeIndex = ModeIndex_512x384[Depth];
773 }
774 break;
775 case 640:
776 if(VDisplay == 480) ModeIndex = ModeIndex_640x480[Depth];
777 else if(VDisplay == 400) ModeIndex = ModeIndex_640x400[Depth];
778 break;
779 case 720:
780 if((!(VBFlags & TV_HIVISION)) && (!((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I)))) {
781 if(VDisplay == 480) {
782 ModeIndex = ModeIndex_720x480[Depth];
783 } else if(VDisplay == 576) {
784 if( ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR750P)) ||
785 ((!(VBFlags & (TV_YPBPR | TV_PALM))) && (VBFlags & TV_PAL)) )
786 ModeIndex = ModeIndex_720x576[Depth];
787 }
788 }
789 break;
790 case 768:
791 if((!(VBFlags & TV_HIVISION)) && (!((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I)))) {
792 if( ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR750P)) ||
793 ((!(VBFlags & (TV_YPBPR | TV_PALM))) && (VBFlags & TV_PAL)) ) {
794 if(VDisplay == 576) ModeIndex = ModeIndex_768x576[Depth];
795 }
796 }
797 break;
798 case 800:
799 if(VDisplay == 600) ModeIndex = ModeIndex_800x600[Depth];
800 else if(VDisplay == 480) {
801 if(!((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR750P))) {
802 ModeIndex = ModeIndex_800x480[Depth];
803 }
804 }
805 break;
806 case 960:
807 if(VGAEngine == SIS_315_VGA) {
808 if(VDisplay == 600) {
809 if((VBFlags & TV_HIVISION) || ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I))) {
810 ModeIndex = ModeIndex_960x600[Depth];
811 }
812 }
813 }
814 break;
815 case 1024:
816 if(VDisplay == 768) {
817 if(VBFlags2 & VB2_30xBLV) {
818 ModeIndex = ModeIndex_1024x768[Depth];
819 }
820 } else if(VDisplay == 576) {
821 if( (VBFlags & TV_HIVISION) ||
822 ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I)) ||
823 ((VBFlags2 & VB2_30xBLV) &&
824 ((!(VBFlags & (TV_YPBPR | TV_PALM))) && (VBFlags & TV_PAL))) ) {
825 ModeIndex = ModeIndex_1024x576[Depth];
826 }
827 }
828 break;
829 case 1280:
830 if(VDisplay == 720) {
831 if((VBFlags & TV_HIVISION) ||
832 ((VBFlags & TV_YPBPR) && (VBFlags & (TV_YPBPR1080I | TV_YPBPR750P)))) {
833 ModeIndex = ModeIndex_1280x720[Depth];
834 }
835 } else if(VDisplay == 1024) {
836 if((VBFlags & TV_HIVISION) ||
837 ((VBFlags & TV_YPBPR) && (VBFlags & TV_YPBPR1080I))) {
838 ModeIndex = ModeIndex_1280x1024[Depth];
839 }
840 }
841 break;
842 }
843 }
844 return ModeIndex;
845}
846
847unsigned short
848SiS_GetModeID_VGA2(int VGAEngine, unsigned int VBFlags, int HDisplay, int VDisplay, int Depth,
849 unsigned int VBFlags2)
850{
851 if(!(VBFlags2 & VB2_SISVGA2BRIDGE)) return 0;
852
853 if(HDisplay >= 1920) return 0;
854
855 switch(HDisplay)
856 {
857 case 1600:
858 if(VDisplay == 1200) {
859 if(VGAEngine != SIS_315_VGA) return 0;
860 if(!(VBFlags2 & VB2_30xB)) return 0;
861 }
862 break;
863 case 1680:
864 if(VDisplay == 1050) {
865 if(VGAEngine != SIS_315_VGA) return 0;
866 if(!(VBFlags2 & VB2_30xB)) return 0;
867 }
868 break;
869 }
870
871 return SiS_GetModeID(VGAEngine, 0, HDisplay, VDisplay, Depth, false, 0, 0);
872}
873
874
875/*********************************************/
876/* HELPER: SetReg, GetReg */
877/*********************************************/
878
879void
880SiS_SetReg(SISIOADDRESS port, u8 index, u8 data)
881{
882 outb(index, port);
883 outb(data, port + 1);
884}
885
886void
887SiS_SetRegByte(SISIOADDRESS port, u8 data)
888{
889 outb(data, port);
890}
891
892void
893SiS_SetRegShort(SISIOADDRESS port, u16 data)
894{
895 outw(data, port);
896}
897
898void
899SiS_SetRegLong(SISIOADDRESS port, u32 data)
900{
901 outl(data, port);
902}
903
904u8
905SiS_GetReg(SISIOADDRESS port, u8 index)
906{
907 outb(index, port);
908 return inb(port + 1);
909}
910
911u8
912SiS_GetRegByte(SISIOADDRESS port)
913{
914 return inb(port);
915}
916
917u16
918SiS_GetRegShort(SISIOADDRESS port)
919{
920 return inw(port);
921}
922
923u32
924SiS_GetRegLong(SISIOADDRESS port)
925{
926 return inl(port);
927}
928
929void
930SiS_SetRegANDOR(SISIOADDRESS Port, u8 Index, u8 DataAND, u8 DataOR)
931{
932 u8 temp;
933
934 temp = SiS_GetReg(Port, Index);
935 temp = (temp & (DataAND)) | DataOR;
936 SiS_SetReg(Port, Index, temp);
937}
938
939void
940SiS_SetRegAND(SISIOADDRESS Port, u8 Index, u8 DataAND)
941{
942 u8 temp;
943
944 temp = SiS_GetReg(Port, Index);
945 temp &= DataAND;
946 SiS_SetReg(Port, Index, temp);
947}
948
949void
950SiS_SetRegOR(SISIOADDRESS Port, u8 Index, u8 DataOR)
951{
952 u8 temp;
953
954 temp = SiS_GetReg(Port, Index);
955 temp |= DataOR;
956 SiS_SetReg(Port, Index, temp);
957}
958
959/*********************************************/
960/* HELPER: DisplayOn, DisplayOff */
961/*********************************************/
962
963void
964SiS_DisplayOn(struct SiS_Private *SiS_Pr)
965{
966 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x01,0xDF);
967}
968
969void
970SiS_DisplayOff(struct SiS_Private *SiS_Pr)
971{
972 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x01,0x20);
973}
974
975
976/*********************************************/
977/* HELPER: Init Port Addresses */
978/*********************************************/
979
980void
981SiSRegInit(struct SiS_Private *SiS_Pr, SISIOADDRESS BaseAddr)
982{
983 SiS_Pr->SiS_P3c4 = BaseAddr + 0x14;
984 SiS_Pr->SiS_P3d4 = BaseAddr + 0x24;
985 SiS_Pr->SiS_P3c0 = BaseAddr + 0x10;
986 SiS_Pr->SiS_P3ce = BaseAddr + 0x1e;
987 SiS_Pr->SiS_P3c2 = BaseAddr + 0x12;
988 SiS_Pr->SiS_P3ca = BaseAddr + 0x1a;
989 SiS_Pr->SiS_P3c6 = BaseAddr + 0x16;
990 SiS_Pr->SiS_P3c7 = BaseAddr + 0x17;
991 SiS_Pr->SiS_P3c8 = BaseAddr + 0x18;
992 SiS_Pr->SiS_P3c9 = BaseAddr + 0x19;
993 SiS_Pr->SiS_P3cb = BaseAddr + 0x1b;
994 SiS_Pr->SiS_P3cc = BaseAddr + 0x1c;
995 SiS_Pr->SiS_P3cd = BaseAddr + 0x1d;
996 SiS_Pr->SiS_P3da = BaseAddr + 0x2a;
997 SiS_Pr->SiS_Part1Port = BaseAddr + SIS_CRT2_PORT_04;
998 SiS_Pr->SiS_Part2Port = BaseAddr + SIS_CRT2_PORT_10;
999 SiS_Pr->SiS_Part3Port = BaseAddr + SIS_CRT2_PORT_12;
1000 SiS_Pr->SiS_Part4Port = BaseAddr + SIS_CRT2_PORT_14;
1001 SiS_Pr->SiS_Part5Port = BaseAddr + SIS_CRT2_PORT_14 + 2;
1002 SiS_Pr->SiS_DDC_Port = BaseAddr + 0x14;
1003 SiS_Pr->SiS_VidCapt = BaseAddr + SIS_VIDEO_CAPTURE;
1004 SiS_Pr->SiS_VidPlay = BaseAddr + SIS_VIDEO_PLAYBACK;
1005}
1006
1007/*********************************************/
1008/* HELPER: GetSysFlags */
1009/*********************************************/
1010
1011static void
1012SiS_GetSysFlags(struct SiS_Private *SiS_Pr)
1013{
1014 unsigned char cr5f, temp1, temp2;
1015
1016 /* 661 and newer: NEVER write non-zero to SR11[7:4] */
1017 /* (SR11 is used for DDC and in enable/disablebridge) */
1018 SiS_Pr->SiS_SensibleSR11 = false;
1019 SiS_Pr->SiS_MyCR63 = 0x63;
1020 if(SiS_Pr->ChipType >= SIS_330) {
1021 SiS_Pr->SiS_MyCR63 = 0x53;
1022 if(SiS_Pr->ChipType >= SIS_661) {
1023 SiS_Pr->SiS_SensibleSR11 = true;
1024 }
1025 }
1026
1027 /* You should use the macros, not these flags directly */
1028
1029 SiS_Pr->SiS_SysFlags = 0;
1030 if(SiS_Pr->ChipType == SIS_650) {
1031 cr5f = SiS_GetReg(SiS_Pr->SiS_P3d4,0x5f) & 0xf0;
1032 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x5c,0x07);
1033 temp1 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x5c) & 0xf8;
1034 SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x5c,0xf8);
1035 temp2 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x5c) & 0xf8;
1036 if((!temp1) || (temp2)) {
1037 switch(cr5f) {
1038 case 0x80:
1039 case 0x90:
1040 case 0xc0:
1041 SiS_Pr->SiS_SysFlags |= SF_IsM650;
1042 break;
1043 case 0xa0:
1044 case 0xb0:
1045 case 0xe0:
1046 SiS_Pr->SiS_SysFlags |= SF_Is651;
1047 break;
1048 }
1049 } else {
1050 switch(cr5f) {
1051 case 0x90:
1052 temp1 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x5c) & 0xf8;
1053 switch(temp1) {
1054 case 0x00: SiS_Pr->SiS_SysFlags |= SF_IsM652; break;
1055 case 0x40: SiS_Pr->SiS_SysFlags |= SF_IsM653; break;
1056 default: SiS_Pr->SiS_SysFlags |= SF_IsM650; break;
1057 }
1058 break;
1059 case 0xb0:
1060 SiS_Pr->SiS_SysFlags |= SF_Is652;
1061 break;
1062 default:
1063 SiS_Pr->SiS_SysFlags |= SF_IsM650;
1064 break;
1065 }
1066 }
1067 }
1068
1069 if(SiS_Pr->ChipType >= SIS_760 && SiS_Pr->ChipType <= SIS_761) {
1070 if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x78) & 0x30) {
1071 SiS_Pr->SiS_SysFlags |= SF_760LFB;
1072 }
1073 if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x79) & 0xf0) {
1074 SiS_Pr->SiS_SysFlags |= SF_760UMA;
1075 }
1076 }
1077}
1078
1079/*********************************************/
1080/* HELPER: Init PCI & Engines */
1081/*********************************************/
1082
1083static void
1084SiSInitPCIetc(struct SiS_Private *SiS_Pr)
1085{
1086 switch(SiS_Pr->ChipType) {
1087#ifdef CONFIG_FB_SIS_300
1088 case SIS_300:
1089 case SIS_540:
1090 case SIS_630:
1091 case SIS_730:
1092 /* Set - PCI LINEAR ADDRESSING ENABLE (0x80)
1093 * - RELOCATED VGA IO ENABLED (0x20)
1094 * - MMIO ENABLED (0x01)
1095 * Leave other bits untouched.
1096 */
1097 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x20,0xa1);
1098 /* - Enable 2D (0x40)
1099 * - Enable 3D (0x02)
1100 * - Enable 3D Vertex command fetch (0x10) ?
1101 * - Enable 3D command parser (0x08) ?
1102 */
1103 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x1E,0x5A);
1104 break;
1105#endif
1106#ifdef CONFIG_FB_SIS_315
1107 case SIS_315H:
1108 case SIS_315:
1109 case SIS_315PRO:
1110 case SIS_650:
1111 case SIS_740:
1112 case SIS_330:
1113 case SIS_661:
1114 case SIS_741:
1115 case SIS_660:
1116 case SIS_760:
1117 case SIS_761:
1118 case SIS_340:
1119 case XGI_40:
1120 /* See above */
1121 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x20,0xa1);
1122 /* - Enable 3D G/L transformation engine (0x80)
1123 * - Enable 2D (0x40)
1124 * - Enable 3D vertex command fetch (0x10)
1125 * - Enable 3D command parser (0x08)
1126 * - Enable 3D (0x02)
1127 */
1128 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x1E,0xDA);
1129 break;
1130 case XGI_20:
1131 case SIS_550:
1132 /* See above */
1133 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x20,0xa1);
1134 /* No 3D engine ! */
1135 /* - Enable 2D (0x40)
1136 * - disable 3D
1137 */
1138 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x1E,0x60,0x40);
1139 break;
1140#endif
1141 default:
1142 break;
1143 }
1144}
1145
1146/*********************************************/
1147/* HELPER: SetLVDSetc */
1148/*********************************************/
1149
1150static
1151void
1152SiSSetLVDSetc(struct SiS_Private *SiS_Pr)
1153{
1154 unsigned short temp;
1155
1156 SiS_Pr->SiS_IF_DEF_LVDS = 0;
1157 SiS_Pr->SiS_IF_DEF_TRUMPION = 0;
1158 SiS_Pr->SiS_IF_DEF_CH70xx = 0;
1159 SiS_Pr->SiS_IF_DEF_CONEX = 0;
1160
1161 SiS_Pr->SiS_ChrontelInit = 0;
1162
1163 if(SiS_Pr->ChipType == XGI_20) return;
1164
1165 /* Check for SiS30x first */
1166 temp = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x00);
1167 if((temp == 1) || (temp == 2)) return;
1168
1169 switch(SiS_Pr->ChipType) {
1170#ifdef CONFIG_FB_SIS_300
1171 case SIS_540:
1172 case SIS_630:
1173 case SIS_730:
1174 temp = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x37) & 0x0e) >> 1;
1175 if((temp >= 2) && (temp <= 5)) SiS_Pr->SiS_IF_DEF_LVDS = 1;
1176 if(temp == 3) SiS_Pr->SiS_IF_DEF_TRUMPION = 1;
1177 if((temp == 4) || (temp == 5)) {
1178 /* Save power status (and error check) - UNUSED */
1179 SiS_Pr->SiS_Backup70xx = SiS_GetCH700x(SiS_Pr, 0x0e);
1180 SiS_Pr->SiS_IF_DEF_CH70xx = 1;
1181 }
1182 break;
1183#endif
1184#ifdef CONFIG_FB_SIS_315
1185 case SIS_550:
1186 case SIS_650:
1187 case SIS_740:
1188 case SIS_330:
1189 temp = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x37) & 0x0e) >> 1;
1190 if((temp >= 2) && (temp <= 3)) SiS_Pr->SiS_IF_DEF_LVDS = 1;
1191 if(temp == 3) SiS_Pr->SiS_IF_DEF_CH70xx = 2;
1192 break;
1193 case SIS_661:
1194 case SIS_741:
1195 case SIS_660:
1196 case SIS_760:
1197 case SIS_761:
1198 case SIS_340:
1199 case XGI_20:
1200 case XGI_40:
1201 temp = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x38) & 0xe0) >> 5;
1202 if((temp >= 2) && (temp <= 3)) SiS_Pr->SiS_IF_DEF_LVDS = 1;
1203 if(temp == 3) SiS_Pr->SiS_IF_DEF_CH70xx = 2;
1204 if(temp == 4) SiS_Pr->SiS_IF_DEF_CONEX = 1; /* Not yet supported */
1205 break;
1206#endif
1207 default:
1208 break;
1209 }
1210}
1211
1212/*********************************************/
1213/* HELPER: Enable DSTN/FSTN */
1214/*********************************************/
1215
1216void
1217SiS_SetEnableDstn(struct SiS_Private *SiS_Pr, int enable)
1218{
1219 SiS_Pr->SiS_IF_DEF_DSTN = enable ? 1 : 0;
1220}
1221
1222void
1223SiS_SetEnableFstn(struct SiS_Private *SiS_Pr, int enable)
1224{
1225 SiS_Pr->SiS_IF_DEF_FSTN = enable ? 1 : 0;
1226}
1227
1228/*********************************************/
1229/* HELPER: Get modeflag */
1230/*********************************************/
1231
1232unsigned short
1233SiS_GetModeFlag(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
1234 unsigned short ModeIdIndex)
1235{
1236 if(SiS_Pr->UseCustomMode) {
1237 return SiS_Pr->CModeFlag;
1238 } else if(ModeNo <= 0x13) {
1239 return SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
1240 } else {
1241 return SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
1242 }
1243}
1244
1245/*********************************************/
1246/* HELPER: Determine ROM usage */
1247/*********************************************/
1248
1249bool
1250SiSDetermineROMLayout661(struct SiS_Private *SiS_Pr)
1251{
1252 unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
1253 unsigned short romversoffs, romvmaj = 1, romvmin = 0;
1254
1255 if(SiS_Pr->ChipType >= XGI_20) {
1256 /* XGI ROMs don't qualify */
1257 return false;
1258 } else if(SiS_Pr->ChipType >= SIS_761) {
1259 /* I very much assume 761, 340 and newer will use new layout */
1260 return true;
1261 } else if(SiS_Pr->ChipType >= SIS_661) {
1262 if((ROMAddr[0x1a] == 'N') &&
1263 (ROMAddr[0x1b] == 'e') &&
1264 (ROMAddr[0x1c] == 'w') &&
1265 (ROMAddr[0x1d] == 'V')) {
1266 return true;
1267 }
1268 romversoffs = ROMAddr[0x16] | (ROMAddr[0x17] << 8);
1269 if(romversoffs) {
1270 if((ROMAddr[romversoffs+1] == '.') || (ROMAddr[romversoffs+4] == '.')) {
1271 romvmaj = ROMAddr[romversoffs] - '0';
1272 romvmin = ((ROMAddr[romversoffs+2] -'0') * 10) + (ROMAddr[romversoffs+3] - '0');
1273 }
1274 }
1275 if((romvmaj != 0) || (romvmin >= 92)) {
1276 return true;
1277 }
1278 } else if(IS_SIS650740) {
1279 if((ROMAddr[0x1a] == 'N') &&
1280 (ROMAddr[0x1b] == 'e') &&
1281 (ROMAddr[0x1c] == 'w') &&
1282 (ROMAddr[0x1d] == 'V')) {
1283 return true;
1284 }
1285 }
1286 return false;
1287}
1288
1289static void
1290SiSDetermineROMUsage(struct SiS_Private *SiS_Pr)
1291{
1292 unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
1293 unsigned short romptr = 0;
1294
1295 SiS_Pr->SiS_UseROM = false;
1296 SiS_Pr->SiS_ROMNew = false;
1297 SiS_Pr->SiS_PWDOffset = 0;
1298
1299 if(SiS_Pr->ChipType >= XGI_20) return;
1300
1301 if((ROMAddr) && (SiS_Pr->UseROM)) {
1302 if(SiS_Pr->ChipType == SIS_300) {
1303 /* 300: We check if the code starts below 0x220 by
1304 * checking the jmp instruction at the beginning
1305 * of the BIOS image.
1306 */
1307 if((ROMAddr[3] == 0xe9) && ((ROMAddr[5] << 8) | ROMAddr[4]) > 0x21a)
1308 SiS_Pr->SiS_UseROM = true;
1309 } else if(SiS_Pr->ChipType < SIS_315H) {
1310 /* Sony's VAIO BIOS 1.09 follows the standard, so perhaps
1311 * the others do as well
1312 */
1313 SiS_Pr->SiS_UseROM = true;
1314 } else {
1315 /* 315/330 series stick to the standard(s) */
1316 SiS_Pr->SiS_UseROM = true;
1317 if((SiS_Pr->SiS_ROMNew = SiSDetermineROMLayout661(SiS_Pr))) {
1318 SiS_Pr->SiS_EMIOffset = 14;
1319 SiS_Pr->SiS_PWDOffset = 17;
1320 SiS_Pr->SiS661LCD2TableSize = 36;
1321 /* Find out about LCD data table entry size */
1322 if((romptr = SISGETROMW(0x0102))) {
1323 if(ROMAddr[romptr + (32 * 16)] == 0xff)
1324 SiS_Pr->SiS661LCD2TableSize = 32;
1325 else if(ROMAddr[romptr + (34 * 16)] == 0xff)
1326 SiS_Pr->SiS661LCD2TableSize = 34;
1327 else if(ROMAddr[romptr + (36 * 16)] == 0xff) /* 0.94, 2.05.00+ */
1328 SiS_Pr->SiS661LCD2TableSize = 36;
1329 else if( (ROMAddr[romptr + (38 * 16)] == 0xff) || /* 2.00.00 - 2.02.00 */
1330 (ROMAddr[0x6F] & 0x01) ) { /* 2.03.00 - <2.05.00 */
1331 SiS_Pr->SiS661LCD2TableSize = 38; /* UMC data layout abandoned at 2.05.00 */
1332 SiS_Pr->SiS_EMIOffset = 16;
1333 SiS_Pr->SiS_PWDOffset = 19;
1334 }
1335 }
1336 }
1337 }
1338 }
1339}
1340
1341/*********************************************/
1342/* HELPER: SET SEGMENT REGISTERS */
1343/*********************************************/
1344
1345static void
1346SiS_SetSegRegLower(struct SiS_Private *SiS_Pr, unsigned short value)
1347{
1348 unsigned short temp;
1349
1350 value &= 0x00ff;
1351 temp = SiS_GetRegByte(SiS_Pr->SiS_P3cb) & 0xf0;
1352 temp |= (value >> 4);
1353 SiS_SetRegByte(SiS_Pr->SiS_P3cb, temp);
1354 temp = SiS_GetRegByte(SiS_Pr->SiS_P3cd) & 0xf0;
1355 temp |= (value & 0x0f);
1356 SiS_SetRegByte(SiS_Pr->SiS_P3cd, temp);
1357}
1358
1359static void
1360SiS_SetSegRegUpper(struct SiS_Private *SiS_Pr, unsigned short value)
1361{
1362 unsigned short temp;
1363
1364 value &= 0x00ff;
1365 temp = SiS_GetRegByte(SiS_Pr->SiS_P3cb) & 0x0f;
1366 temp |= (value & 0xf0);
1367 SiS_SetRegByte(SiS_Pr->SiS_P3cb, temp);
1368 temp = SiS_GetRegByte(SiS_Pr->SiS_P3cd) & 0x0f;
1369 temp |= (value << 4);
1370 SiS_SetRegByte(SiS_Pr->SiS_P3cd, temp);
1371}
1372
1373static void
1374SiS_SetSegmentReg(struct SiS_Private *SiS_Pr, unsigned short value)
1375{
1376 SiS_SetSegRegLower(SiS_Pr, value);
1377 SiS_SetSegRegUpper(SiS_Pr, value);
1378}
1379
1380static void
1381SiS_ResetSegmentReg(struct SiS_Private *SiS_Pr)
1382{
1383 SiS_SetSegmentReg(SiS_Pr, 0);
1384}
1385
1386static void
1387SiS_SetSegmentRegOver(struct SiS_Private *SiS_Pr, unsigned short value)
1388{
1389 unsigned short temp = value >> 8;
1390
1391 temp &= 0x07;
1392 temp |= (temp << 4);
1393 SiS_SetReg(SiS_Pr->SiS_P3c4,0x1d,temp);
1394 SiS_SetSegmentReg(SiS_Pr, value);
1395}
1396
1397static void
1398SiS_ResetSegmentRegOver(struct SiS_Private *SiS_Pr)
1399{
1400 SiS_SetSegmentRegOver(SiS_Pr, 0);
1401}
1402
1403static void
1404SiS_ResetSegmentRegisters(struct SiS_Private *SiS_Pr)
1405{
1406 if((IS_SIS65x) || (SiS_Pr->ChipType >= SIS_661)) {
1407 SiS_ResetSegmentReg(SiS_Pr);
1408 SiS_ResetSegmentRegOver(SiS_Pr);
1409 }
1410}
1411
1412/*********************************************/
1413/* HELPER: GetVBType */
1414/*********************************************/
1415
1416static
1417void
1418SiS_GetVBType(struct SiS_Private *SiS_Pr)
1419{
1420 unsigned short flag = 0, rev = 0, nolcd = 0;
1421 unsigned short p4_0f, p4_25, p4_27;
1422
1423 SiS_Pr->SiS_VBType = 0;
1424
1425 if((SiS_Pr->SiS_IF_DEF_LVDS) || (SiS_Pr->SiS_IF_DEF_CONEX))
1426 return;
1427
1428 if(SiS_Pr->ChipType == XGI_20)
1429 return;
1430
1431 flag = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x00);
1432
1433 if(flag > 3)
1434 return;
1435
1436 rev = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x01);
1437
1438 if(flag >= 2) {
1439 SiS_Pr->SiS_VBType = VB_SIS302B;
1440 } else if(flag == 1) {
1441 if(rev >= 0xC0) {
1442 SiS_Pr->SiS_VBType = VB_SIS301C;
1443 } else if(rev >= 0xB0) {
1444 SiS_Pr->SiS_VBType = VB_SIS301B;
1445 /* Check if 30xB DH version (no LCD support, use Panel Link instead) */
1446 nolcd = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x23);
1447 if(!(nolcd & 0x02)) SiS_Pr->SiS_VBType |= VB_NoLCD;
1448 } else {
1449 SiS_Pr->SiS_VBType = VB_SIS301;
1450 }
1451 }
1452 if(SiS_Pr->SiS_VBType & (VB_SIS301B | VB_SIS301C | VB_SIS302B)) {
1453 if(rev >= 0xE0) {
1454 flag = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x39);
1455 if(flag == 0xff) SiS_Pr->SiS_VBType = VB_SIS302LV;
1456 else SiS_Pr->SiS_VBType = VB_SIS301C; /* VB_SIS302ELV; */
1457 } else if(rev >= 0xD0) {
1458 SiS_Pr->SiS_VBType = VB_SIS301LV;
1459 }
1460 }
1461 if(SiS_Pr->SiS_VBType & (VB_SIS301C | VB_SIS301LV | VB_SIS302LV | VB_SIS302ELV)) {
1462 p4_0f = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x0f);
1463 p4_25 = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x25);
1464 p4_27 = SiS_GetReg(SiS_Pr->SiS_Part4Port,0x27);
1465 SiS_SetRegAND(SiS_Pr->SiS_Part4Port,0x0f,0x7f);
1466 SiS_SetRegOR(SiS_Pr->SiS_Part4Port,0x25,0x08);
1467 SiS_SetRegAND(SiS_Pr->SiS_Part4Port,0x27,0xfd);
1468 if(SiS_GetReg(SiS_Pr->SiS_Part4Port,0x26) & 0x08) {
1469 SiS_Pr->SiS_VBType |= VB_UMC;
1470 }
1471 SiS_SetReg(SiS_Pr->SiS_Part4Port,0x27,p4_27);
1472 SiS_SetReg(SiS_Pr->SiS_Part4Port,0x25,p4_25);
1473 SiS_SetReg(SiS_Pr->SiS_Part4Port,0x0f,p4_0f);
1474 }
1475}
1476
1477/*********************************************/
1478/* HELPER: Check RAM size */
1479/*********************************************/
1480
1481static bool
1482SiS_CheckMemorySize(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
1483 unsigned short ModeIdIndex)
1484{
1485 unsigned short AdapterMemSize = SiS_Pr->VideoMemorySize / (1024*1024);
1486 unsigned short modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
1487 unsigned short memorysize = ((modeflag & MemoryInfoFlag) >> MemorySizeShift) + 1;
1488
1489 if(!AdapterMemSize) return true;
1490
1491 if(AdapterMemSize < memorysize) return false;
1492 return true;
1493}
1494
1495/*********************************************/
1496/* HELPER: Get DRAM type */
1497/*********************************************/
1498
1499#ifdef CONFIG_FB_SIS_315
1500static unsigned char
1501SiS_Get310DRAMType(struct SiS_Private *SiS_Pr)
1502{
1503 unsigned char data;
1504
1505 if((*SiS_Pr->pSiS_SoftSetting) & SoftDRAMType) {
1506 data = (*SiS_Pr->pSiS_SoftSetting) & 0x03;
1507 } else {
1508 if(SiS_Pr->ChipType >= XGI_20) {
1509 /* Do I need this? SR17 seems to be zero anyway... */
1510 data = 0;
1511 } else if(SiS_Pr->ChipType >= SIS_340) {
1512 /* TODO */
1513 data = 0;
1514 } else if(SiS_Pr->ChipType >= SIS_661) {
1515 if(SiS_Pr->SiS_ROMNew) {
1516 data = ((SiS_GetReg(SiS_Pr->SiS_P3d4,0x78) & 0xc0) >> 6);
1517 } else {
1518 data = SiS_GetReg(SiS_Pr->SiS_P3d4,0x78) & 0x07;
1519 }
1520 } else if(IS_SIS550650740) {
1521 data = SiS_GetReg(SiS_Pr->SiS_P3c4,0x13) & 0x07;
1522 } else { /* 315, 330 */
1523 data = SiS_GetReg(SiS_Pr->SiS_P3c4,0x3a) & 0x03;
1524 if(SiS_Pr->ChipType == SIS_330) {
1525 if(data > 1) {
1526 switch(SiS_GetReg(SiS_Pr->SiS_P3d4,0x5f) & 0x30) {
1527 case 0x00: data = 1; break;
1528 case 0x10: data = 3; break;
1529 case 0x20: data = 3; break;
1530 case 0x30: data = 2; break;
1531 }
1532 } else {
1533 data = 0;
1534 }
1535 }
1536 }
1537 }
1538
1539 return data;
1540}
1541
1542static unsigned short
1543SiS_GetMCLK(struct SiS_Private *SiS_Pr)
1544{
1545 unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
1546 unsigned short index;
1547
1548 index = SiS_Get310DRAMType(SiS_Pr);
1549 if(SiS_Pr->ChipType >= SIS_661) {
1550 if(SiS_Pr->SiS_ROMNew) {
1551 return((unsigned short)(SISGETROMW((0x90 + (index * 5) + 3))));
1552 }
1553 return(SiS_Pr->SiS_MCLKData_0[index].CLOCK);
1554 } else if(index >= 4) {
1555 return(SiS_Pr->SiS_MCLKData_1[index - 4].CLOCK);
1556 } else {
1557 return(SiS_Pr->SiS_MCLKData_0[index].CLOCK);
1558 }
1559}
1560#endif
1561
1562/*********************************************/
1563/* HELPER: ClearBuffer */
1564/*********************************************/
1565
1566static void
1567SiS_ClearBuffer(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
1568{
1569 unsigned char SISIOMEMTYPE *memaddr = SiS_Pr->VideoMemoryAddress;
1570 unsigned int memsize = SiS_Pr->VideoMemorySize;
1571 unsigned short SISIOMEMTYPE *pBuffer;
1572 int i;
1573
1574 if(!memaddr || !memsize) return;
1575
1576 if(SiS_Pr->SiS_ModeType >= ModeEGA) {
1577 if(ModeNo > 0x13) {
1578 memset_io(memaddr, 0, memsize);
1579 } else {
1580 pBuffer = (unsigned short SISIOMEMTYPE *)memaddr;
1581 for(i = 0; i < 0x4000; i++) writew(0x0000, &pBuffer[i]);
1582 }
1583 } else if(SiS_Pr->SiS_ModeType < ModeCGA) {
1584 pBuffer = (unsigned short SISIOMEMTYPE *)memaddr;
1585 for(i = 0; i < 0x4000; i++) writew(0x0720, &pBuffer[i]);
1586 } else {
1587 memset_io(memaddr, 0, 0x8000);
1588 }
1589}
1590
1591/*********************************************/
1592/* HELPER: SearchModeID */
1593/*********************************************/
1594
1595bool
1596SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
1597 unsigned short *ModeIdIndex)
1598{
1599 unsigned char VGAINFO = SiS_Pr->SiS_VGAINFO;
1600
1601 if((*ModeNo) <= 0x13) {
1602
1603 if((*ModeNo) <= 0x05) (*ModeNo) |= 0x01;
1604
1605 for((*ModeIdIndex) = 0; ;(*ModeIdIndex)++) {
1606 if(SiS_Pr->SiS_SModeIDTable[(*ModeIdIndex)].St_ModeID == (*ModeNo)) break;
1607 if(SiS_Pr->SiS_SModeIDTable[(*ModeIdIndex)].St_ModeID == 0xFF) return false;
1608 }
1609
1610 if((*ModeNo) == 0x07) {
1611 if(VGAINFO & 0x10) (*ModeIdIndex)++; /* 400 lines */
1612 /* else 350 lines */
1613 }
1614 if((*ModeNo) <= 0x03) {
1615 if(!(VGAINFO & 0x80)) (*ModeIdIndex)++;
1616 if(VGAINFO & 0x10) (*ModeIdIndex)++; /* 400 lines */
1617 /* else 350 lines */
1618 }
1619 /* else 200 lines */
1620
1621 } else {
1622
1623 for((*ModeIdIndex) = 0; ;(*ModeIdIndex)++) {
1624 if(SiS_Pr->SiS_EModeIDTable[(*ModeIdIndex)].Ext_ModeID == (*ModeNo)) break;
1625 if(SiS_Pr->SiS_EModeIDTable[(*ModeIdIndex)].Ext_ModeID == 0xFF) return false;
1626 }
1627
1628 }
1629 return true;
1630}
1631
1632/*********************************************/
1633/* HELPER: GetModePtr */
1634/*********************************************/
1635
1636unsigned short
1637SiS_GetModePtr(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
1638{
1639 unsigned short index;
1640
1641 if(ModeNo <= 0x13) {
1642 index = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_StTableIndex;
1643 } else {
1644 if(SiS_Pr->SiS_ModeType <= ModeEGA) index = 0x1B;
1645 else index = 0x0F;
1646 }
1647 return index;
1648}
1649
1650/*********************************************/
1651/* HELPERS: Get some indices */
1652/*********************************************/
1653
1654unsigned short
1655SiS_GetRefCRTVCLK(struct SiS_Private *SiS_Pr, unsigned short Index, int UseWide)
1656{
1657 if(SiS_Pr->SiS_RefIndex[Index].Ext_InfoFlag & HaveWideTiming) {
1658 if(UseWide == 1) {
1659 return SiS_Pr->SiS_RefIndex[Index].Ext_CRTVCLK_WIDE;
1660 } else {
1661 return SiS_Pr->SiS_RefIndex[Index].Ext_CRTVCLK_NORM;
1662 }
1663 } else {
1664 return SiS_Pr->SiS_RefIndex[Index].Ext_CRTVCLK;
1665 }
1666}
1667
1668unsigned short
1669SiS_GetRefCRT1CRTC(struct SiS_Private *SiS_Pr, unsigned short Index, int UseWide)
1670{
1671 if(SiS_Pr->SiS_RefIndex[Index].Ext_InfoFlag & HaveWideTiming) {
1672 if(UseWide == 1) {
1673 return SiS_Pr->SiS_RefIndex[Index].Ext_CRT1CRTC_WIDE;
1674 } else {
1675 return SiS_Pr->SiS_RefIndex[Index].Ext_CRT1CRTC_NORM;
1676 }
1677 } else {
1678 return SiS_Pr->SiS_RefIndex[Index].Ext_CRT1CRTC;
1679 }
1680}
1681
1682/*********************************************/
1683/* HELPER: LowModeTests */
1684/*********************************************/
1685
1686static bool
1687SiS_DoLowModeTest(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
1688{
1689 unsigned short temp, temp1, temp2;
1690
1691 if((ModeNo != 0x03) && (ModeNo != 0x10) && (ModeNo != 0x12))
1692 return true;
1693 temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x11);
1694 SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x11,0x80);
1695 temp1 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x00);
1696 SiS_SetReg(SiS_Pr->SiS_P3d4,0x00,0x55);
1697 temp2 = SiS_GetReg(SiS_Pr->SiS_P3d4,0x00);
1698 SiS_SetReg(SiS_Pr->SiS_P3d4,0x00,temp1);
1699 SiS_SetReg(SiS_Pr->SiS_P3d4,0x11,temp);
1700 if((SiS_Pr->ChipType >= SIS_315H) ||
1701 (SiS_Pr->ChipType == SIS_300)) {
1702 if(temp2 == 0x55) return false;
1703 else return true;
1704 } else {
1705 if(temp2 != 0x55) return true;
1706 else {
1707 SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x35,0x01);
1708 return false;
1709 }
1710 }
1711}
1712
1713static void
1714SiS_SetLowModeTest(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
1715{
1716 if(SiS_DoLowModeTest(SiS_Pr, ModeNo)) {
1717 SiS_Pr->SiS_SetFlag |= LowModeTests;
1718 }
1719}
1720
1721/*********************************************/
1722/* HELPER: OPEN/CLOSE CRT1 CRTC */
1723/*********************************************/
1724
1725static void
1726SiS_OpenCRTC(struct SiS_Private *SiS_Pr)
1727{
1728 if(IS_SIS650) {
1729 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x51,0x1f);
1730 if(IS_SIS651) SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x51,0x20);
1731 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x56,0xe7);
1732 } else if(IS_SIS661741660760) {
1733 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x61,0xf7);
1734 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x51,0x1f);
1735 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x56,0xe7);
1736 if(!SiS_Pr->SiS_ROMNew) {
1737 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x3a,0xef);
1738 }
1739 }
1740}
1741
1742static void
1743SiS_CloseCRTC(struct SiS_Private *SiS_Pr)
1744{
1745#if 0 /* This locks some CRTC registers. We don't want that. */
1746 unsigned short temp1 = 0, temp2 = 0;
1747
1748 if(IS_SIS661741660760) {
1749 if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) {
1750 temp1 = 0xa0; temp2 = 0x08;
1751 }
1752 SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x51,0x1f,temp1);
1753 SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x56,0xe7,temp2);
1754 }
1755#endif
1756}
1757
1758static void
1759SiS_HandleCRT1(struct SiS_Private *SiS_Pr)
1760{
1761 /* Enable CRT1 gating */
1762 SiS_SetRegAND(SiS_Pr->SiS_P3d4,SiS_Pr->SiS_MyCR63,0xbf);
1763#if 0
1764 if(!(SiS_GetReg(SiS_Pr->SiS_P3c4,0x15) & 0x01)) {
1765 if((SiS_GetReg(SiS_Pr->SiS_P3c4,0x15) & 0x0a) ||
1766 (SiS_GetReg(SiS_Pr->SiS_P3c4,0x16) & 0x01)) {
1767 SiS_SetRegOR(SiS_Pr->SiS_P3d4,SiS_Pr->SiS_MyCR63,0x40);
1768 }
1769 }
1770#endif
1771}
1772
1773/*********************************************/
1774/* HELPER: GetColorDepth */
1775/*********************************************/
1776
1777unsigned short
1778SiS_GetColorDepth(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
1779 unsigned short ModeIdIndex)
1780{
1781 static const unsigned short ColorDepth[6] = { 1, 2, 4, 4, 6, 8 };
1782 unsigned short modeflag;
1783 short index;
1784
1785 /* Do NOT check UseCustomMode, will skrew up FIFO */
1786 if(ModeNo == 0xfe) {
1787 modeflag = SiS_Pr->CModeFlag;
1788 } else if(ModeNo <= 0x13) {
1789 modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
1790 } else {
1791 modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
1792 }
1793
1794 index = (modeflag & ModeTypeMask) - ModeEGA;
1795 if(index < 0) index = 0;
1796 return ColorDepth[index];
1797}
1798
1799/*********************************************/
1800/* HELPER: GetOffset */
1801/*********************************************/
1802
1803unsigned short
1804SiS_GetOffset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
1805 unsigned short ModeIdIndex, unsigned short RRTI)
1806{
1807 unsigned short xres, temp, colordepth, infoflag;
1808
1809 if(SiS_Pr->UseCustomMode) {
1810 infoflag = SiS_Pr->CInfoFlag;
1811 xres = SiS_Pr->CHDisplay;
1812 } else {
1813 infoflag = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag;
1814 xres = SiS_Pr->SiS_RefIndex[RRTI].XRes;
1815 }
1816
1817 colordepth = SiS_GetColorDepth(SiS_Pr, ModeNo, ModeIdIndex);
1818
1819 temp = xres / 16;
1820 if(infoflag & InterlaceMode) temp <<= 1;
1821 temp *= colordepth;
1822 if(xres % 16) temp += (colordepth >> 1);
1823
1824 return temp;
1825}
1826
1827/*********************************************/
1828/* SEQ */
1829/*********************************************/
1830
1831static void
1832SiS_SetSeqRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
1833{
1834 unsigned char SRdata;
1835 int i;
1836
1837 SiS_SetReg(SiS_Pr->SiS_P3c4,0x00,0x03);
1838
1839 /* or "display off" */
1840 SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[0] | 0x20;
1841
1842 /* determine whether to force x8 dotclock */
1843 if((SiS_Pr->SiS_VBType & VB_SISVB) || (SiS_Pr->SiS_IF_DEF_LVDS)) {
1844
1845 if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToTV)) {
1846 if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) SRdata |= 0x01;
1847 } else if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) SRdata |= 0x01;
1848
1849 }
1850
1851 SiS_SetReg(SiS_Pr->SiS_P3c4,0x01,SRdata);
1852
1853 for(i = 2; i <= 4; i++) {
1854 SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[i - 1];
1855 SiS_SetReg(SiS_Pr->SiS_P3c4,i,SRdata);
1856 }
1857}
1858
1859/*********************************************/
1860/* MISC */
1861/*********************************************/
1862
1863static void
1864SiS_SetMiscRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
1865{
1866 unsigned char Miscdata;
1867
1868 Miscdata = SiS_Pr->SiS_StandTable[StandTableIndex].MISC;
1869
1870 if(SiS_Pr->ChipType < SIS_661) {
1871 if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
1872 if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) {
1873 Miscdata |= 0x0C;
1874 }
1875 }
1876 }
1877
1878 SiS_SetRegByte(SiS_Pr->SiS_P3c2,Miscdata);
1879}
1880
1881/*********************************************/
1882/* CRTC */
1883/*********************************************/
1884
1885static void
1886SiS_SetCRTCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
1887{
1888 unsigned char CRTCdata;
1889 unsigned short i;
1890
1891 /* Unlock CRTC */
1892 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x11,0x7f);
1893
1894 for(i = 0; i <= 0x18; i++) {
1895 CRTCdata = SiS_Pr->SiS_StandTable[StandTableIndex].CRTC[i];
1896 SiS_SetReg(SiS_Pr->SiS_P3d4,i,CRTCdata);
1897 }
1898
1899 if(SiS_Pr->ChipType >= SIS_661) {
1900 SiS_OpenCRTC(SiS_Pr);
1901 for(i = 0x13; i <= 0x14; i++) {
1902 CRTCdata = SiS_Pr->SiS_StandTable[StandTableIndex].CRTC[i];
1903 SiS_SetReg(SiS_Pr->SiS_P3d4,i,CRTCdata);
1904 }
1905 } else if( ( (SiS_Pr->ChipType == SIS_630) ||
1906 (SiS_Pr->ChipType == SIS_730) ) &&
1907 (SiS_Pr->ChipRevision >= 0x30) ) {
1908 if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) {
1909 if(SiS_Pr->SiS_VBInfo & (SetCRT2ToLCD | SetCRT2ToTV)) {
1910 SiS_SetReg(SiS_Pr->SiS_P3d4,0x18,0xFE);
1911 }
1912 }
1913 }
1914}
1915
1916/*********************************************/
1917/* ATT */
1918/*********************************************/
1919
1920static void
1921SiS_SetATTRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
1922{
1923 unsigned char ARdata;
1924 unsigned short i;
1925
1926 for(i = 0; i <= 0x13; i++) {
1927 ARdata = SiS_Pr->SiS_StandTable[StandTableIndex].ATTR[i];
1928
1929 if(i == 0x13) {
1930 /* Pixel shift. If screen on LCD or TV is shifted left or right,
1931 * this might be the cause.
1932 */
1933 if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
1934 if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) ARdata = 0;
1935 }
1936 if(SiS_Pr->SiS_IF_DEF_LVDS == 1) {
1937 if(SiS_Pr->SiS_IF_DEF_CH70xx != 0) {
1938 if(SiS_Pr->SiS_VBInfo & SetCRT2ToTV) {
1939 if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) ARdata = 0;
1940 }
1941 }
1942 }
1943 if(SiS_Pr->ChipType >= SIS_661) {
1944 if(SiS_Pr->SiS_VBInfo & (SetCRT2ToTV | SetCRT2ToLCD)) {
1945 if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) ARdata = 0;
1946 }
1947 } else if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCD) {
1948 if(SiS_Pr->ChipType >= SIS_315H) {
1949 if(IS_SIS550650740660) {
1950 /* 315, 330 don't do this */
1951 if(SiS_Pr->SiS_VBType & VB_SIS30xB) {
1952 if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) ARdata = 0;
1953 } else {
1954 ARdata = 0;
1955 }
1956 }
1957 } else {
1958 if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) ARdata = 0;
1959 }
1960 }
1961 }
1962 SiS_GetRegByte(SiS_Pr->SiS_P3da); /* reset 3da */
1963 SiS_SetRegByte(SiS_Pr->SiS_P3c0,i); /* set index */
1964 SiS_SetRegByte(SiS_Pr->SiS_P3c0,ARdata); /* set data */
1965 }
1966
1967 SiS_GetRegByte(SiS_Pr->SiS_P3da); /* reset 3da */
1968 SiS_SetRegByte(SiS_Pr->SiS_P3c0,0x14); /* set index */
1969 SiS_SetRegByte(SiS_Pr->SiS_P3c0,0x00); /* set data */
1970
1971 SiS_GetRegByte(SiS_Pr->SiS_P3da);
1972 SiS_SetRegByte(SiS_Pr->SiS_P3c0,0x20); /* Enable Attribute */
1973 SiS_GetRegByte(SiS_Pr->SiS_P3da);
1974}
1975
1976/*********************************************/
1977/* GRC */
1978/*********************************************/
1979
1980static void
1981SiS_SetGRCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
1982{
1983 unsigned char GRdata;
1984 unsigned short i;
1985
1986 for(i = 0; i <= 0x08; i++) {
1987 GRdata = SiS_Pr->SiS_StandTable[StandTableIndex].GRC[i];
1988 SiS_SetReg(SiS_Pr->SiS_P3ce,i,GRdata);
1989 }
1990
1991 if(SiS_Pr->SiS_ModeType > ModeVGA) {
1992 /* 256 color disable */
1993 SiS_SetRegAND(SiS_Pr->SiS_P3ce,0x05,0xBF);
1994 }
1995}
1996
1997/*********************************************/
1998/* CLEAR EXTENDED REGISTERS */
1999/*********************************************/
2000
2001static void
2002SiS_ClearExt1Regs(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
2003{
2004 unsigned short i;
2005
2006 for(i = 0x0A; i <= 0x0E; i++) {
2007 SiS_SetReg(SiS_Pr->SiS_P3c4,i,0x00);
2008 }
2009
2010 if(SiS_Pr->ChipType >= SIS_315H) {
2011 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x37,0xFE);
2012 if(ModeNo <= 0x13) {
2013 if(ModeNo == 0x06 || ModeNo >= 0x0e) {
2014 SiS_SetReg(SiS_Pr->SiS_P3c4,0x0e,0x20);
2015 }
2016 }
2017 }
2018}
2019
2020/*********************************************/
2021/* RESET VCLK */
2022/*********************************************/
2023
2024static void
2025SiS_ResetCRT1VCLK(struct SiS_Private *SiS_Pr)
2026{
2027 if(SiS_Pr->ChipType >= SIS_315H) {
2028 if(SiS_Pr->ChipType < SIS_661) {
2029 if(SiS_Pr->SiS_IF_DEF_LVDS == 0) return;
2030 }
2031 } else {
2032 if((SiS_Pr->SiS_IF_DEF_LVDS == 0) &&
2033 (!(SiS_Pr->SiS_VBType & VB_SIS30xBLV)) ) {
2034 return;
2035 }
2036 }
2037
2038 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x31,0xcf,0x20);
2039 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2B,SiS_Pr->SiS_VCLKData[1].SR2B);
2040 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2C,SiS_Pr->SiS_VCLKData[1].SR2C);
2041 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2D,0x80);
2042 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x31,0xcf,0x10);
2043 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2B,SiS_Pr->SiS_VCLKData[0].SR2B);
2044 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2C,SiS_Pr->SiS_VCLKData[0].SR2C);
2045 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2D,0x80);
2046}
2047
2048/*********************************************/
2049/* SYNC */
2050/*********************************************/
2051
2052static void
2053SiS_SetCRT1Sync(struct SiS_Private *SiS_Pr, unsigned short RRTI)
2054{
2055 unsigned short sync;
2056
2057 if(SiS_Pr->UseCustomMode) {
2058 sync = SiS_Pr->CInfoFlag >> 8;
2059 } else {
2060 sync = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag >> 8;
2061 }
2062
2063 sync &= 0xC0;
2064 sync |= 0x2f;
2065 SiS_SetRegByte(SiS_Pr->SiS_P3c2,sync);
2066}
2067
2068/*********************************************/
2069/* CRTC/2 */
2070/*********************************************/
2071
2072static void
2073SiS_SetCRT1CRTC(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
2074 unsigned short ModeIdIndex, unsigned short RRTI)
2075{
2076 unsigned short temp, i, j, modeflag;
2077 unsigned char *crt1data = NULL;
2078
2079 modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
2080
2081 if(SiS_Pr->UseCustomMode) {
2082
2083 crt1data = &SiS_Pr->CCRT1CRTC[0];
2084
2085 } else {
2086
2087 temp = SiS_GetRefCRT1CRTC(SiS_Pr, RRTI, SiS_Pr->SiS_UseWide);
2088
2089 /* Alternate for 1600x1200 LCDA */
2090 if((temp == 0x20) && (SiS_Pr->Alternate1600x1200)) temp = 0x57;
2091
2092 crt1data = (unsigned char *)&SiS_Pr->SiS_CRT1Table[temp].CR[0];
2093
2094 }
2095
2096 /* unlock cr0-7 */
2097 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x11,0x7f);
2098
2099 for(i = 0, j = 0; i <= 7; i++, j++) {
2100 SiS_SetReg(SiS_Pr->SiS_P3d4,j,crt1data[i]);
2101 }
2102 for(j = 0x10; i <= 10; i++, j++) {
2103 SiS_SetReg(SiS_Pr->SiS_P3d4,j,crt1data[i]);
2104 }
2105 for(j = 0x15; i <= 12; i++, j++) {
2106 SiS_SetReg(SiS_Pr->SiS_P3d4,j,crt1data[i]);
2107 }
2108 for(j = 0x0A; i <= 15; i++, j++) {
2109 SiS_SetReg(SiS_Pr->SiS_P3c4,j,crt1data[i]);
2110 }
2111
2112 SiS_SetReg(SiS_Pr->SiS_P3c4,0x0E,crt1data[16] & 0xE0);
2113
2114 temp = (crt1data[16] & 0x01) << 5;
2115 if(modeflag & DoubleScanMode) temp |= 0x80;
2116 SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x09,0x5F,temp);
2117
2118 if(SiS_Pr->SiS_ModeType > ModeVGA) {
2119 SiS_SetReg(SiS_Pr->SiS_P3d4,0x14,0x4F);
2120 }
2121
2122#ifdef CONFIG_FB_SIS_315
2123 if(SiS_Pr->ChipType == XGI_20) {
2124 SiS_SetReg(SiS_Pr->SiS_P3d4,0x04,crt1data[4] - 1);
2125 if(!(temp = crt1data[5] & 0x1f)) {
2126 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x0c,0xfb);
2127 }
2128 SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x05,0xe0,((temp - 1) & 0x1f));
2129 temp = (crt1data[16] >> 5) + 3;
2130 if(temp > 7) temp -= 7;
2131 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0e,0x1f,(temp << 5));
2132 }
2133#endif
2134}
2135
2136/*********************************************/
2137/* OFFSET & PITCH */
2138/*********************************************/
2139/* (partly overruled by SetPitch() in XF86) */
2140/*********************************************/
2141
2142static void
2143SiS_SetCRT1Offset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
2144 unsigned short ModeIdIndex, unsigned short RRTI)
2145{
2146 unsigned short temp, DisplayUnit, infoflag;
2147
2148 if(SiS_Pr->UseCustomMode) {
2149 infoflag = SiS_Pr->CInfoFlag;
2150 } else {
2151 infoflag = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag;
2152 }
2153
2154 DisplayUnit = SiS_GetOffset(SiS_Pr, ModeNo, ModeIdIndex, RRTI);
2155
2156 temp = (DisplayUnit >> 8) & 0x0f;
2157 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0E,0xF0,temp);
2158
2159 SiS_SetReg(SiS_Pr->SiS_P3d4,0x13,DisplayUnit & 0xFF);
2160
2161 if(infoflag & InterlaceMode) DisplayUnit >>= 1;
2162
2163 DisplayUnit <<= 5;
2164 temp = (DisplayUnit >> 8) + 1;
2165 if(DisplayUnit & 0xff) temp++;
2166 if(SiS_Pr->ChipType == XGI_20) {
2167 if(ModeNo == 0x4a || ModeNo == 0x49) temp--;
2168 }
2169 SiS_SetReg(SiS_Pr->SiS_P3c4,0x10,temp);
2170}
2171
2172/*********************************************/
2173/* VCLK */
2174/*********************************************/
2175
2176static void
2177SiS_SetCRT1VCLK(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
2178 unsigned short ModeIdIndex, unsigned short RRTI)
2179{
2180 unsigned short index = 0, clka, clkb;
2181
2182 if(SiS_Pr->UseCustomMode) {
2183 clka = SiS_Pr->CSR2B;
2184 clkb = SiS_Pr->CSR2C;
2185 } else {
2186 index = SiS_GetVCLK2Ptr(SiS_Pr, ModeNo, ModeIdIndex, RRTI);
2187 if((SiS_Pr->SiS_VBType & VB_SIS30xBLV) &&
2188 (SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA)) {
2189 /* Alternate for 1600x1200 LCDA */
2190 if((index == 0x21) && (SiS_Pr->Alternate1600x1200)) index = 0x72;
2191 clka = SiS_Pr->SiS_VBVCLKData[index].Part4_A;
2192 clkb = SiS_Pr->SiS_VBVCLKData[index].Part4_B;
2193 } else {
2194 clka = SiS_Pr->SiS_VCLKData[index].SR2B;
2195 clkb = SiS_Pr->SiS_VCLKData[index].SR2C;
2196 }
2197 }
2198
2199 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x31,0xCF);
2200
2201 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2b,clka);
2202 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2c,clkb);
2203
2204 if(SiS_Pr->ChipType >= SIS_315H) {
2205#ifdef CONFIG_FB_SIS_315
2206 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2D,0x01);
2207 if(SiS_Pr->ChipType == XGI_20) {
2208 unsigned short mf = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
2209 if(mf & HalfDCLK) {
2210 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2b,SiS_GetReg(SiS_Pr->SiS_P3c4,0x2b));
2211 clkb = SiS_GetReg(SiS_Pr->SiS_P3c4,0x2c);
2212 clkb = (((clkb & 0x1f) << 1) + 1) | (clkb & 0xe0);
2213 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2c,clkb);
2214 }
2215 }
2216#endif
2217 } else {
2218 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2D,0x80);
2219 }
2220}
2221
2222/*********************************************/
2223/* FIFO */
2224/*********************************************/
2225
2226#ifdef CONFIG_FB_SIS_300
2227void
2228SiS_GetFIFOThresholdIndex300(struct SiS_Private *SiS_Pr, unsigned short *idx1,
2229 unsigned short *idx2)
2230{
2231 unsigned short temp1, temp2;
2232 static const unsigned char ThTiming[8] = {
2233 1, 2, 2, 3, 0, 1, 1, 2
2234 };
2235
2236 temp1 = temp2 = (SiS_GetReg(SiS_Pr->SiS_P3c4,0x18) & 0x62) >> 1;
2237 (*idx2) = (unsigned short)(ThTiming[((temp2 >> 3) | temp1) & 0x07]);
2238 (*idx1) = (unsigned short)(SiS_GetReg(SiS_Pr->SiS_P3c4,0x16) >> 6) & 0x03;
2239 (*idx1) |= (unsigned short)(((SiS_GetReg(SiS_Pr->SiS_P3c4,0x14) >> 4) & 0x0c));
2240 (*idx1) <<= 1;
2241}
2242
2243static unsigned short
2244SiS_GetFIFOThresholdA300(unsigned short idx1, unsigned short idx2)
2245{
2246 static const unsigned char ThLowA[8 * 3] = {
2247 61, 3,52, 5,68, 7,100,11,
2248 43, 3,42, 5,54, 7, 78,11,
2249 34, 3,37, 5,47, 7, 67,11
2250 };
2251
2252 return (unsigned short)((ThLowA[idx1 + 1] * idx2) + ThLowA[idx1]);
2253}
2254
2255unsigned short
2256SiS_GetFIFOThresholdB300(unsigned short idx1, unsigned short idx2)
2257{
2258 static const unsigned char ThLowB[8 * 3] = {
2259 81, 4,72, 6,88, 8,120,12,
2260 55, 4,54, 6,66, 8, 90,12,
2261 42, 4,45, 6,55, 8, 75,12
2262 };
2263
2264 return (unsigned short)((ThLowB[idx1 + 1] * idx2) + ThLowB[idx1]);
2265}
2266
2267static unsigned short
2268SiS_DoCalcDelay(struct SiS_Private *SiS_Pr, unsigned short MCLK, unsigned short VCLK,
2269 unsigned short colordepth, unsigned short key)
2270{
2271 unsigned short idx1, idx2;
2272 unsigned int longtemp = VCLK * colordepth;
2273
2274 SiS_GetFIFOThresholdIndex300(SiS_Pr, &idx1, &idx2);
2275
2276 if(key == 0) {
2277 longtemp *= SiS_GetFIFOThresholdA300(idx1, idx2);
2278 } else {
2279 longtemp *= SiS_GetFIFOThresholdB300(idx1, idx2);
2280 }
2281 idx1 = longtemp % (MCLK * 16);
2282 longtemp /= (MCLK * 16);
2283 if(idx1) longtemp++;
2284 return (unsigned short)longtemp;
2285}
2286
2287static unsigned short
2288SiS_CalcDelay(struct SiS_Private *SiS_Pr, unsigned short VCLK,
2289 unsigned short colordepth, unsigned short MCLK)
2290{
2291 unsigned short temp1, temp2;
2292
2293 temp2 = SiS_DoCalcDelay(SiS_Pr, MCLK, VCLK, colordepth, 0);
2294 temp1 = SiS_DoCalcDelay(SiS_Pr, MCLK, VCLK, colordepth, 1);
2295 if(temp1 < 4) temp1 = 4;
2296 temp1 -= 4;
2297 if(temp2 < temp1) temp2 = temp1;
2298 return temp2;
2299}
2300
2301static void
2302SiS_SetCRT1FIFO_300(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
2303 unsigned short RefreshRateTableIndex)
2304{
2305 unsigned short ThresholdLow = 0;
2306 unsigned short temp, index, VCLK, MCLK, colorth;
2307 static const unsigned short colortharray[6] = { 1, 1, 2, 2, 3, 4 };
2308
2309 if(ModeNo > 0x13) {
2310
2311 /* Get VCLK */
2312 if(SiS_Pr->UseCustomMode) {
2313 VCLK = SiS_Pr->CSRClock;
2314 } else {
2315 index = SiS_GetRefCRTVCLK(SiS_Pr, RefreshRateTableIndex, SiS_Pr->SiS_UseWide);
2316 VCLK = SiS_Pr->SiS_VCLKData[index].CLOCK;
2317 }
2318
2319 /* Get half colordepth */
2320 colorth = colortharray[(SiS_Pr->SiS_ModeType - ModeEGA)];
2321
2322 /* Get MCLK */
2323 index = SiS_GetReg(SiS_Pr->SiS_P3c4,0x3A) & 0x07;
2324 MCLK = SiS_Pr->SiS_MCLKData_0[index].CLOCK;
2325
2326 temp = SiS_GetReg(SiS_Pr->SiS_P3d4,0x35) & 0xc3;
2327 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x16,0x3c,temp);
2328
2329 do {
2330 ThresholdLow = SiS_CalcDelay(SiS_Pr, VCLK, colorth, MCLK) + 1;
2331 if(ThresholdLow < 0x13) break;
2332 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x16,0xfc);
2333 ThresholdLow = 0x13;
2334 temp = SiS_GetReg(SiS_Pr->SiS_P3c4,0x16) >> 6;
2335 if(!temp) break;
2336 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x16,0x3f,((temp - 1) << 6));
2337 } while(0);
2338
2339 } else ThresholdLow = 2;
2340
2341 /* Write CRT/CPU threshold low, CRT/Engine threshold high */
2342 temp = (ThresholdLow << 4) | 0x0f;
2343 SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,temp);
2344
2345 temp = (ThresholdLow & 0x10) << 1;
2346 if(ModeNo > 0x13) temp |= 0x40;
2347 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0f,0x9f,temp);
2348
2349 /* What is this? */
2350 SiS_SetReg(SiS_Pr->SiS_P3c4,0x3B,0x09);
2351
2352 /* Write CRT/CPU threshold high */
2353 temp = ThresholdLow + 3;
2354 if(temp > 0x0f) temp = 0x0f;
2355 SiS_SetReg(SiS_Pr->SiS_P3c4,0x09,temp);
2356}
2357
2358unsigned short
2359SiS_GetLatencyFactor630(struct SiS_Private *SiS_Pr, unsigned short index)
2360{
2361 static const unsigned char LatencyFactor[] = {
2362 97, 88, 86, 79, 77, 0, /* 64 bit BQ=2 */
2363 0, 87, 85, 78, 76, 54, /* 64 bit BQ=1 */
2364 97, 88, 86, 79, 77, 0, /* 128 bit BQ=2 */
2365 0, 79, 77, 70, 68, 48, /* 128 bit BQ=1 */
2366 80, 72, 69, 63, 61, 0, /* 64 bit BQ=2 */
2367 0, 70, 68, 61, 59, 37, /* 64 bit BQ=1 */
2368 86, 77, 75, 68, 66, 0, /* 128 bit BQ=2 */
2369 0, 68, 66, 59, 57, 37 /* 128 bit BQ=1 */
2370 };
2371 static const unsigned char LatencyFactor730[] = {
2372 69, 63, 61,
2373 86, 79, 77,
2374 103, 96, 94,
2375 120,113,111,
2376 137,130,128
2377 };
2378
2379 if(SiS_Pr->ChipType == SIS_730) {
2380 return (unsigned short)LatencyFactor730[index];
2381 } else {
2382 return (unsigned short)LatencyFactor[index];
2383 }
2384}
2385
2386static unsigned short
2387SiS_CalcDelay2(struct SiS_Private *SiS_Pr, unsigned char key)
2388{
2389 unsigned short index;
2390
2391 if(SiS_Pr->ChipType == SIS_730) {
2392 index = ((key & 0x0f) * 3) + ((key & 0xc0) >> 6);
2393 } else {
2394 index = (key & 0xe0) >> 5;
2395 if(key & 0x10) index += 6;
2396 if(!(key & 0x01)) index += 24;
2397 if(SiS_GetReg(SiS_Pr->SiS_P3c4,0x14) & 0x80) index += 12;
2398 }
2399 return SiS_GetLatencyFactor630(SiS_Pr, index);
2400}
2401
2402static void
2403SiS_SetCRT1FIFO_630(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
2404 unsigned short RefreshRateTableIndex)
2405{
2406 unsigned short ThresholdLow = 0;
2407 unsigned short i, data, VCLK, MCLK16, colorth = 0;
2408 unsigned int templ, datal;
2409 const unsigned char *queuedata = NULL;
2410 static const unsigned char FQBQData[21] = {
2411 0x01,0x21,0x41,0x61,0x81,
2412 0x31,0x51,0x71,0x91,0xb1,
2413 0x00,0x20,0x40,0x60,0x80,
2414 0x30,0x50,0x70,0x90,0xb0,
2415 0xff
2416 };
2417 static const unsigned char FQBQData730[16] = {
2418 0x34,0x74,0xb4,
2419 0x23,0x63,0xa3,
2420 0x12,0x52,0x92,
2421 0x01,0x41,0x81,
2422 0x00,0x40,0x80,
2423 0xff
2424 };
2425 static const unsigned short colortharray[6] = {
2426 1, 1, 2, 2, 3, 4
2427 };
2428
2429 i = 0;
2430
2431 if (SiS_Pr->ChipType == SIS_730)
2432 queuedata = &FQBQData730[0];
2433 else
2434 queuedata = &FQBQData[0];
2435
2436 if(ModeNo > 0x13) {
2437
2438 /* Get VCLK */
2439 if(SiS_Pr->UseCustomMode) {
2440 VCLK = SiS_Pr->CSRClock;
2441 } else {
2442 data = SiS_GetRefCRTVCLK(SiS_Pr, RefreshRateTableIndex, SiS_Pr->SiS_UseWide);
2443 VCLK = SiS_Pr->SiS_VCLKData[data].CLOCK;
2444 }
2445
2446 /* Get MCLK * 16 */
2447 data = SiS_GetReg(SiS_Pr->SiS_P3c4,0x1A) & 0x07;
2448 MCLK16 = SiS_Pr->SiS_MCLKData_0[data].CLOCK * 16;
2449
2450 /* Get half colordepth */
2451 colorth = colortharray[(SiS_Pr->SiS_ModeType - ModeEGA)];
2452
2453 do {
2454 templ = SiS_CalcDelay2(SiS_Pr, queuedata[i]) * VCLK * colorth;
2455
2456 datal = templ % MCLK16;
2457 templ = (templ / MCLK16) + 1;
2458 if(datal) templ++;
2459
2460 if(templ > 0x13) {
2461 if(queuedata[i + 1] == 0xFF) {
2462 ThresholdLow = 0x13;
2463 break;
2464 }
2465 i++;
2466 } else {
2467 ThresholdLow = templ;
2468 break;
2469 }
2470 } while(queuedata[i] != 0xFF);
2471
2472 } else {
2473
2474 if(SiS_Pr->ChipType != SIS_730) i = 9;
2475 ThresholdLow = 0x02;
2476
2477 }
2478
2479 /* Write CRT/CPU threshold low, CRT/Engine threshold high */
2480 data = ((ThresholdLow & 0x0f) << 4) | 0x0f;
2481 SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,data);
2482
2483 data = (ThresholdLow & 0x10) << 1;
2484 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0F,0xDF,data);
2485
2486 /* What is this? */
2487 SiS_SetReg(SiS_Pr->SiS_P3c4,0x3B,0x09);
2488
2489 /* Write CRT/CPU threshold high (gap = 3) */
2490 data = ThresholdLow + 3;
2491 if(data > 0x0f) data = 0x0f;
2492 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x09,0x80,data);
2493
2494 /* Write foreground and background queue */
2495 templ = sisfb_read_nbridge_pci_dword(SiS_Pr, 0x50);
2496
2497 if(SiS_Pr->ChipType == SIS_730) {
2498
2499 templ &= 0xfffff9ff;
2500 templ |= ((queuedata[i] & 0xc0) << 3);
2501
2502 } else {
2503
2504 templ &= 0xf0ffffff;
2505 if( (ModeNo <= 0x13) &&
2506 (SiS_Pr->ChipType == SIS_630) &&
2507 (SiS_Pr->ChipRevision >= 0x30) ) {
2508 templ |= 0x0b000000;
2509 } else {
2510 templ |= ((queuedata[i] & 0xf0) << 20);
2511 }
2512
2513 }
2514
2515 sisfb_write_nbridge_pci_dword(SiS_Pr, 0x50, templ);
2516 templ = sisfb_read_nbridge_pci_dword(SiS_Pr, 0xA0);
2517
2518 /* GUI grant timer (PCI config 0xA3) */
2519 if(SiS_Pr->ChipType == SIS_730) {
2520
2521 templ &= 0x00ffffff;
2522 datal = queuedata[i] << 8;
2523 templ |= (((datal & 0x0f00) | ((datal & 0x3000) >> 8)) << 20);
2524
2525 } else {
2526
2527 templ &= 0xf0ffffff;
2528 templ |= ((queuedata[i] & 0x0f) << 24);
2529
2530 }
2531
2532 sisfb_write_nbridge_pci_dword(SiS_Pr, 0xA0, templ);
2533}
2534#endif /* CONFIG_FB_SIS_300 */
2535
2536#ifdef CONFIG_FB_SIS_315
2537static void
2538SiS_SetCRT1FIFO_310(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
2539{
2540 unsigned short modeflag;
2541
2542 /* disable auto-threshold */
2543 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x3D,0xFE);
2544
2545 modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
2546
2547 SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,0xAE);
2548 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x09,0xF0);
2549 if(ModeNo > 0x13) {
2550 if(SiS_Pr->ChipType >= XGI_20) {
2551 SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,0x34);
2552 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x3D,0x01);
2553 } else if(SiS_Pr->ChipType >= SIS_661) {
2554 if(!(modeflag & HalfDCLK)) {
2555 SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,0x34);
2556 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x3D,0x01);
2557 }
2558 } else {
2559 if((!(modeflag & DoubleScanMode)) || (!(modeflag & HalfDCLK))) {
2560 SiS_SetReg(SiS_Pr->SiS_P3c4,0x08,0x34);
2561 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x3D,0x01);
2562 }
2563 }
2564 }
2565}
2566#endif
2567
2568/*********************************************/
2569/* MODE REGISTERS */
2570/*********************************************/
2571
2572static void
2573SiS_SetVCLKState(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
2574 unsigned short RefreshRateTableIndex, unsigned short ModeIdIndex)
2575{
2576 unsigned short data = 0, VCLK = 0, index = 0;
2577
2578 if(ModeNo > 0x13) {
2579 if(SiS_Pr->UseCustomMode) {
2580 VCLK = SiS_Pr->CSRClock;
2581 } else {
2582 index = SiS_GetVCLK2Ptr(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
2583 VCLK = SiS_Pr->SiS_VCLKData[index].CLOCK;
2584 }
2585 }
2586
2587 if(SiS_Pr->ChipType < SIS_315H) {
2588#ifdef CONFIG_FB_SIS_300
2589 if(VCLK > 150) data |= 0x80;
2590 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x07,0x7B,data);
2591
2592 data = 0x00;
2593 if(VCLK >= 150) data |= 0x08;
2594 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x32,0xF7,data);
2595#endif
2596 } else if(SiS_Pr->ChipType < XGI_20) {
2597#ifdef CONFIG_FB_SIS_315
2598 if(VCLK >= 166) data |= 0x0c;
2599 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x32,0xf3,data);
2600
2601 if(VCLK >= 166) {
2602 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x1f,0xe7);
2603 }
2604#endif
2605 } else {
2606#ifdef CONFIG_FB_SIS_315
2607 if(VCLK >= 200) data |= 0x0c;
2608 if(SiS_Pr->ChipType == XGI_20) data &= ~0x04;
2609 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x32,0xf3,data);
2610 if(SiS_Pr->ChipType != XGI_20) {
2611 data = SiS_GetReg(SiS_Pr->SiS_P3c4,0x1f) & 0xe7;
2612 if(VCLK < 200) data |= 0x10;
2613 SiS_SetReg(SiS_Pr->SiS_P3c4,0x1f,data);
2614 }
2615#endif
2616 }
2617
2618 /* DAC speed */
2619 if(SiS_Pr->ChipType >= SIS_661) {
2620
2621 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x07,0xE8,0x10);
2622
2623 } else {
2624
2625 data = 0x03;
2626 if(VCLK >= 260) data = 0x00;
2627 else if(VCLK >= 160) data = 0x01;
2628 else if(VCLK >= 135) data = 0x02;
2629
2630 if(SiS_Pr->ChipType == SIS_540) {
2631 /* Was == 203 or < 234 which made no sense */
2632 if (VCLK < 234) data = 0x02;
2633 }
2634
2635 if(SiS_Pr->ChipType < SIS_315H) {
2636 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x07,0xFC,data);
2637 } else {
2638 if(SiS_Pr->ChipType > SIS_315PRO) {
2639 if(ModeNo > 0x13) data &= 0xfc;
2640 }
2641 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x07,0xF8,data);
2642 }
2643
2644 }
2645}
2646
2647static void
2648SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
2649 unsigned short ModeIdIndex, unsigned short RRTI)
2650{
2651 unsigned short data, infoflag = 0, modeflag;
2652#ifdef CONFIG_FB_SIS_315
2653 unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
2654 unsigned short data2, data3;
2655#endif
2656
2657 modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
2658
2659 if(SiS_Pr->UseCustomMode) {
2660 infoflag = SiS_Pr->CInfoFlag;
2661 } else {
2662 if(ModeNo > 0x13) {
2663 infoflag = SiS_Pr->SiS_RefIndex[RRTI].Ext_InfoFlag;
2664 }
2665 }
2666
2667 /* Disable DPMS */
2668 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x1F,0x3F);
2669
2670 data = 0;
2671 if(ModeNo > 0x13) {
2672 if(SiS_Pr->SiS_ModeType > ModeEGA) {
2673 data |= 0x02;
2674 data |= ((SiS_Pr->SiS_ModeType - ModeVGA) << 2);
2675 }
2676 if(infoflag & InterlaceMode) data |= 0x20;
2677 }
2678 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x06,0xC0,data);
2679
2680 if(SiS_Pr->ChipType != SIS_300) {
2681 data = 0;
2682 if(infoflag & InterlaceMode) {
2683 /* data = (Hsync / 8) - ((Htotal / 8) / 2) + 3 */
2684 int hrs = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x04) |
2685 ((SiS_GetReg(SiS_Pr->SiS_P3c4,0x0b) & 0xc0) << 2)) - 3;
2686 int hto = (SiS_GetReg(SiS_Pr->SiS_P3d4,0x00) |
2687 ((SiS_GetReg(SiS_Pr->SiS_P3c4,0x0b) & 0x03) << 8)) + 5;
2688 data = hrs - (hto >> 1) + 3;
2689 }
2690 SiS_SetReg(SiS_Pr->SiS_P3d4,0x19,data);
2691 SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x1a,0xFC,((data >> 8) & 0x03));
2692 }
2693
2694 if(modeflag & HalfDCLK) {
2695 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x01,0x08);
2696 }
2697
2698 data = 0;
2699 if(modeflag & LineCompareOff) data = 0x08;
2700 if(SiS_Pr->ChipType == SIS_300) {
2701 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0F,0xF7,data);
2702 } else {
2703 if(SiS_Pr->ChipType >= XGI_20) data |= 0x20;
2704 if(SiS_Pr->SiS_ModeType == ModeEGA) {
2705 if(ModeNo > 0x13) {
2706 data |= 0x40;
2707 }
2708 }
2709 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0F,0xB7,data);
2710 }
2711
2712#ifdef CONFIG_FB_SIS_315
2713 if(SiS_Pr->ChipType >= SIS_315H) {
2714 SiS_SetRegAND(SiS_Pr->SiS_P3c4,0x31,0xfb);
2715 }
2716
2717 if(SiS_Pr->ChipType == SIS_315PRO) {
2718
2719 data = SiS_Pr->SiS_SR15[(2 * 4) + SiS_Get310DRAMType(SiS_Pr)];
2720 if(SiS_Pr->SiS_ModeType == ModeText) {
2721 data &= 0xc7;
2722 } else {
2723 data2 = SiS_GetOffset(SiS_Pr, ModeNo, ModeIdIndex, RRTI) >> 1;
2724 if(infoflag & InterlaceMode) data2 >>= 1;
2725 data3 = SiS_GetColorDepth(SiS_Pr, ModeNo, ModeIdIndex) >> 1;
2726 if(data3) data2 /= data3;
2727 if(data2 >= 0x50) {
2728 data &= 0x0f;
2729 data |= 0x50;
2730 }
2731 }
2732 SiS_SetReg(SiS_Pr->SiS_P3c4,0x17,data);
2733
2734 } else if((SiS_Pr->ChipType == SIS_330) || (SiS_Pr->SiS_SysFlags & SF_760LFB)) {
2735
2736 data = SiS_Get310DRAMType(SiS_Pr);
2737 if(SiS_Pr->ChipType == SIS_330) {
2738 data = SiS_Pr->SiS_SR15[(2 * 4) + data];
2739 } else {
2740 if(SiS_Pr->SiS_ROMNew) data = ROMAddr[0xf6];
2741 else if(SiS_Pr->SiS_UseROM) data = ROMAddr[0x100 + data];
2742 else data = 0xba;
2743 }
2744 if(SiS_Pr->SiS_ModeType <= ModeEGA) {
2745 data &= 0xc7;
2746 } else {
2747 if(SiS_Pr->UseCustomMode) {
2748 data2 = SiS_Pr->CSRClock;
2749 } else {
2750 data2 = SiS_GetVCLK2Ptr(SiS_Pr, ModeNo, ModeIdIndex, RRTI);
2751 data2 = SiS_Pr->SiS_VCLKData[data2].CLOCK;
2752 }
2753
2754 data3 = SiS_GetColorDepth(SiS_Pr, ModeNo, ModeIdIndex) >> 1;
2755 if(data3) data2 *= data3;
2756
2757 data2 = ((unsigned int)(SiS_GetMCLK(SiS_Pr) * 1024)) / data2;
2758
2759 if(SiS_Pr->ChipType == SIS_330) {
2760 if(SiS_Pr->SiS_ModeType != Mode16Bpp) {
2761 if (data2 >= 0x19c) data = 0xba;
2762 else if(data2 >= 0x140) data = 0x7a;
2763 else if(data2 >= 0x101) data = 0x3a;
2764 else if(data2 >= 0xf5) data = 0x32;
2765 else if(data2 >= 0xe2) data = 0x2a;
2766 else if(data2 >= 0xc4) data = 0x22;
2767 else if(data2 >= 0xac) data = 0x1a;
2768 else if(data2 >= 0x9e) data = 0x12;
2769 else if(data2 >= 0x8e) data = 0x0a;
2770 else data = 0x02;
2771 } else {
2772 if(data2 >= 0x127) data = 0xba;
2773 else data = 0x7a;
2774 }
2775 } else { /* 76x+LFB */
2776 if (data2 >= 0x190) data = 0xba;
2777 else if(data2 >= 0xff) data = 0x7a;
2778 else if(data2 >= 0xd3) data = 0x3a;
2779 else if(data2 >= 0xa9) data = 0x1a;
2780 else if(data2 >= 0x93) data = 0x0a;
2781 else data = 0x02;
2782 }
2783 }
2784 SiS_SetReg(SiS_Pr->SiS_P3c4,0x17,data);
2785
2786 }
2787 /* XGI: Nothing. */
2788 /* TODO: Check SiS340 */
2789#endif
2790
2791 data = 0x60;
2792 if(SiS_Pr->SiS_ModeType != ModeText) {
2793 data ^= 0x60;
2794 if(SiS_Pr->SiS_ModeType != ModeEGA) {
2795 data ^= 0xA0;
2796 }
2797 }
2798 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x21,0x1F,data);
2799
2800 SiS_SetVCLKState(SiS_Pr, ModeNo, RRTI, ModeIdIndex);
2801
2802#ifdef CONFIG_FB_SIS_315
2803 if(((SiS_Pr->ChipType >= SIS_315H) && (SiS_Pr->ChipType < SIS_661)) ||
2804 (SiS_Pr->ChipType == XGI_40)) {
2805 if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x31) & 0x40) {
2806 SiS_SetReg(SiS_Pr->SiS_P3d4,0x52,0x2c);
2807 } else {
2808 SiS_SetReg(SiS_Pr->SiS_P3d4,0x52,0x6c);
2809 }
2810 } else if(SiS_Pr->ChipType == XGI_20) {
2811 if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x31) & 0x40) {
2812 SiS_SetReg(SiS_Pr->SiS_P3d4,0x52,0x33);
2813 } else {
2814 SiS_SetReg(SiS_Pr->SiS_P3d4,0x52,0x73);
2815 }
2816 SiS_SetReg(SiS_Pr->SiS_P3d4,0x51,0x02);
2817 }
2818#endif
2819}
2820
2821#ifdef CONFIG_FB_SIS_315
2822static void
2823SiS_SetupDualChip(struct SiS_Private *SiS_Pr)
2824{
2825#if 0
2826 /* TODO: Find out about IOAddress2 */
2827 SISIOADDRESS P2_3c2 = SiS_Pr->IOAddress2 + 0x12;
2828 SISIOADDRESS P2_3c4 = SiS_Pr->IOAddress2 + 0x14;
2829 SISIOADDRESS P2_3ce = SiS_Pr->IOAddress2 + 0x1e;
2830 int i;
2831
2832 if((SiS_Pr->ChipRevision != 0) ||
2833 (!(SiS_GetReg(SiS_Pr->SiS_P3c4,0x3a) & 0x04)))
2834 return;
2835
2836 for(i = 0; i <= 4; i++) { /* SR00 - SR04 */
2837 SiS_SetReg(P2_3c4,i,SiS_GetReg(SiS_Pr->SiS_P3c4,i));
2838 }
2839 for(i = 0; i <= 8; i++) { /* GR00 - GR08 */
2840 SiS_SetReg(P2_3ce,i,SiS_GetReg(SiS_Pr->SiS_P3ce,i));
2841 }
2842 SiS_SetReg(P2_3c4,0x05,0x86);
2843 SiS_SetReg(P2_3c4,0x06,SiS_GetReg(SiS_Pr->SiS_P3c4,0x06)); /* SR06 */
2844 SiS_SetReg(P2_3c4,0x21,SiS_GetReg(SiS_Pr->SiS_P3c4,0x21)); /* SR21 */
2845 SiS_SetRegByte(P2_3c2,SiS_GetRegByte(SiS_Pr->SiS_P3cc)); /* MISC */
2846 SiS_SetReg(P2_3c4,0x05,0x00);
2847#endif
2848}
2849#endif
2850
2851/*********************************************/
2852/* LOAD DAC */
2853/*********************************************/
2854
2855static void
2856SiS_WriteDAC(struct SiS_Private *SiS_Pr, SISIOADDRESS DACData, unsigned short shiftflag,
2857 unsigned short dl, unsigned short ah, unsigned short al, unsigned short dh)
2858{
2859 unsigned short d1, d2, d3;
2860
2861 switch(dl) {
2862 case 0: d1 = dh; d2 = ah; d3 = al; break;
2863 case 1: d1 = ah; d2 = al; d3 = dh; break;
2864 default: d1 = al; d2 = dh; d3 = ah;
2865 }
2866 SiS_SetRegByte(DACData, (d1 << shiftflag));
2867 SiS_SetRegByte(DACData, (d2 << shiftflag));
2868 SiS_SetRegByte(DACData, (d3 << shiftflag));
2869}
2870
2871void
2872SiS_LoadDAC(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
2873{
2874 unsigned short data, data2, time, i, j, k, m, n, o;
2875 unsigned short si, di, bx, sf;
2876 SISIOADDRESS DACAddr, DACData;
2877 const unsigned char *table = NULL;
2878
2879 data = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex) & DACInfoFlag;
2880
2881 j = time = 64;
2882 if(data == 0x00) table = SiS_MDA_DAC;
2883 else if(data == 0x08) table = SiS_CGA_DAC;
2884 else if(data == 0x10) table = SiS_EGA_DAC;
2885 else if(data == 0x18) {
2886 j = 16;
2887 time = 256;
2888 table = SiS_VGA_DAC;
2889 }
2890
2891 if( ( (SiS_Pr->SiS_VBInfo & SetCRT2ToLCD) && /* 301B-DH LCD */
2892 (SiS_Pr->SiS_VBType & VB_NoLCD) ) ||
2893 (SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) || /* LCDA */
2894 (!(SiS_Pr->SiS_SetFlag & ProgrammingCRT2)) ) { /* Programming CRT1 */
2895 SiS_SetRegByte(SiS_Pr->SiS_P3c6,0xFF);
2896 DACAddr = SiS_Pr->SiS_P3c8;
2897 DACData = SiS_Pr->SiS_P3c9;
2898 sf = 0;
2899 } else {
2900 DACAddr = SiS_Pr->SiS_Part5Port;
2901 DACData = SiS_Pr->SiS_Part5Port + 1;
2902 sf = 2;
2903 }
2904
2905 SiS_SetRegByte(DACAddr,0x00);
2906
2907 for(i = 0; i < j; i++) {
2908 data = table[i];
2909 for(k = 0; k < 3; k++) {
2910 data2 = 0;
2911 if(data & 0x01) data2 += 0x2A;
2912 if(data & 0x02) data2 += 0x15;
2913 SiS_SetRegByte(DACData, (data2 << sf));
2914 data >>= 2;
2915 }
2916 }
2917
2918 if(time == 256) {
2919 for(i = 16; i < 32; i++) {
2920 data = table[i] << sf;
2921 for(k = 0; k < 3; k++) SiS_SetRegByte(DACData, data);
2922 }
2923 si = 32;
2924 for(m = 0; m < 9; m++) {
2925 di = si;
2926 bx = si + 4;
2927 for(n = 0; n < 3; n++) {
2928 for(o = 0; o < 5; o++) {
2929 SiS_WriteDAC(SiS_Pr, DACData, sf, n, table[di], table[bx], table[si]);
2930 si++;
2931 }
2932 si -= 2;
2933 for(o = 0; o < 3; o++) {
2934 SiS_WriteDAC(SiS_Pr, DACData, sf, n, table[di], table[si], table[bx]);
2935 si--;
2936 }
2937 } /* for n < 3 */
2938 si += 5;
2939 } /* for m < 9 */
2940 }
2941}
2942
2943/*********************************************/
2944/* SET CRT1 REGISTER GROUP */
2945/*********************************************/
2946
2947static void
2948SiS_SetCRT1Group(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short ModeIdIndex)
2949{
2950 unsigned short StandTableIndex, RefreshRateTableIndex;
2951
2952 SiS_Pr->SiS_CRT1Mode = ModeNo;
2953
2954 StandTableIndex = SiS_GetModePtr(SiS_Pr, ModeNo, ModeIdIndex);
2955
2956 if(SiS_Pr->SiS_SetFlag & LowModeTests) {
2957 if(SiS_Pr->SiS_VBInfo & (SetSimuScanMode | SwitchCRT2)) {
2958 SiS_DisableBridge(SiS_Pr);
2959 }
2960 }
2961
2962 SiS_ResetSegmentRegisters(SiS_Pr);
2963
2964 SiS_SetSeqRegs(SiS_Pr, StandTableIndex);
2965 SiS_SetMiscRegs(SiS_Pr, StandTableIndex);
2966 SiS_SetCRTCRegs(SiS_Pr, StandTableIndex);
2967 SiS_SetATTRegs(SiS_Pr, StandTableIndex);
2968 SiS_SetGRCRegs(SiS_Pr, StandTableIndex);
2969 SiS_ClearExt1Regs(SiS_Pr, ModeNo);
2970 SiS_ResetCRT1VCLK(SiS_Pr);
2971
2972 SiS_Pr->SiS_SelectCRT2Rate = 0;
2973 SiS_Pr->SiS_SetFlag &= (~ProgrammingCRT2);
2974
2975 if(SiS_Pr->SiS_VBInfo & SetSimuScanMode) {
2976 if(SiS_Pr->SiS_VBInfo & SetInSlaveMode) {
2977 SiS_Pr->SiS_SetFlag |= ProgrammingCRT2;
2978 }
2979 }
2980
2981 if(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA) {
2982 SiS_Pr->SiS_SetFlag |= ProgrammingCRT2;
2983 }
2984
2985 RefreshRateTableIndex = SiS_GetRatePtr(SiS_Pr, ModeNo, ModeIdIndex);
2986
2987 if(!(SiS_Pr->SiS_VBInfo & SetCRT2ToLCDA)) {
2988 SiS_Pr->SiS_SetFlag &= ~ProgrammingCRT2;
2989 }
2990
2991 if(RefreshRateTableIndex != 0xFFFF) {
2992 SiS_SetCRT1Sync(SiS_Pr, RefreshRateTableIndex);
2993 SiS_SetCRT1CRTC(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
2994 SiS_SetCRT1Offset(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
2995 SiS_SetCRT1VCLK(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
2996 }
2997
2998 switch(SiS_Pr->ChipType) {
2999#ifdef CONFIG_FB_SIS_300
3000 case SIS_300:
3001 SiS_SetCRT1FIFO_300(SiS_Pr, ModeNo, RefreshRateTableIndex);
3002 break;
3003 case SIS_540:
3004 case SIS_630:
3005 case SIS_730:
3006 SiS_SetCRT1FIFO_630(SiS_Pr, ModeNo, RefreshRateTableIndex);
3007 break;
3008#endif
3009 default:
3010#ifdef CONFIG_FB_SIS_315
3011 if(SiS_Pr->ChipType == XGI_20) {
3012 unsigned char sr2b = 0, sr2c = 0;
3013 switch(ModeNo) {
3014 case 0x00:
3015 case 0x01: sr2b = 0x4e; sr2c = 0xe9; break;
3016 case 0x04:
3017 case 0x05:
3018 case 0x0d: sr2b = 0x1b; sr2c = 0xe3; break;
3019 }
3020 if(sr2b) {
3021 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2b,sr2b);
3022 SiS_SetReg(SiS_Pr->SiS_P3c4,0x2c,sr2c);
3023 SiS_SetRegByte(SiS_Pr->SiS_P3c2,(SiS_GetRegByte(SiS_Pr->SiS_P3cc) | 0x0c));
3024 }
3025 }
3026 SiS_SetCRT1FIFO_310(SiS_Pr, ModeNo, ModeIdIndex);
3027#endif
3028 break;
3029 }
3030
3031 SiS_SetCRT1ModeRegs(SiS_Pr, ModeNo, ModeIdIndex, RefreshRateTableIndex);
3032
3033#ifdef CONFIG_FB_SIS_315
3034 if(SiS_Pr->ChipType == XGI_40) {
3035 SiS_SetupDualChip(SiS_Pr);
3036 }
3037#endif
3038
3039 SiS_LoadDAC(SiS_Pr, ModeNo, ModeIdIndex);
3040
3041 if(SiS_Pr->SiS_flag_clearbuffer) {
3042 SiS_ClearBuffer(SiS_Pr, ModeNo);
3043 }
3044
3045 if(!(SiS_Pr->SiS_VBInfo & (SetSimuScanMode | SwitchCRT2 | SetCRT2ToLCDA))) {
3046 SiS_WaitRetrace1(SiS_Pr);
3047 SiS_DisplayOn(SiS_Pr);
3048 }
3049}
3050
3051/*********************************************/
3052/* HELPER: VIDEO BRIDGE PROG CLK */
3053/*********************************************/
3054
3055static void
3056SiS_InitVB(struct SiS_Private *SiS_Pr)
3057{
3058 unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
3059
3060 SiS_Pr->Init_P4_0E = 0;
3061 if(SiS_Pr->SiS_ROMNew) {
3062 SiS_Pr->Init_P4_0E = ROMAddr[0x82];
3063 } else if(SiS_Pr->ChipType >= XGI_40) {
3064 if(SiS_Pr->SiS_XGIROM) {
3065 SiS_Pr->Init_P4_0E = ROMAddr[0x80];
3066 }
3067 }
3068}
3069
3070static void
3071SiS_ResetVB(struct SiS_Private *SiS_Pr)
3072{
3073#ifdef CONFIG_FB_SIS_315
3074 unsigned char *ROMAddr = SiS_Pr->VirtualRomBase;
3075 unsigned short temp;
3076
3077 /* VB programming clock */
3078 if(SiS_Pr->SiS_UseROM) {
3079 if(SiS_Pr->ChipType < SIS_330) {
3080 temp = ROMAddr[VB310Data_1_2_Offset] | 0x40;
3081 if(SiS_Pr->SiS_ROMNew) temp = ROMAddr[0x80] | 0x40;
3082 SiS_SetReg(SiS_Pr->SiS_Part1Port,0x02,temp);
3083 } else if(SiS_Pr->ChipType >= SIS_661 && SiS_Pr->ChipType < XGI_20) {
3084 temp = ROMAddr[0x7e] | 0x40;
3085 if(SiS_Pr->SiS_ROMNew) temp = ROMAddr[0x80] | 0x40;
3086 SiS_SetReg(SiS_Pr->SiS_Part1Port,0x02,temp);
3087 }
3088 } else if(SiS_Pr->ChipType >= XGI_40) {
3089 temp = 0x40;
3090 if(SiS_Pr->SiS_XGIROM) temp |= ROMAddr[0x7e];
3091 /* Can we do this on any chipset? */
3092 SiS_SetReg(SiS_Pr->SiS_Part1Port,0x02,temp);
3093 }
3094#endif
3095}
3096
3097/*********************************************/
3098/* HELPER: SET VIDEO/CAPTURE REGISTERS */
3099/*********************************************/
3100
3101static void
3102SiS_StrangeStuff(struct SiS_Private *SiS_Pr)
3103{
3104 /* SiS65x and XGI set up some sort of "lock mode" for text
3105 * which locks CRT2 in some way to CRT1 timing. Disable
3106 * this here.
3107 */
3108#ifdef CONFIG_FB_SIS_315
3109 if((IS_SIS651) || (IS_SISM650) ||
3110 SiS_Pr->ChipType == SIS_340 ||
3111 SiS_Pr->ChipType == XGI_40) {
3112 SiS_SetReg(SiS_Pr->SiS_VidCapt, 0x3f, 0x00); /* Fiddle with capture regs */
3113 SiS_SetReg(SiS_Pr->SiS_VidCapt, 0x00, 0x00);
3114 SiS_SetReg(SiS_Pr->SiS_VidPlay, 0x00, 0x86); /* (BIOS does NOT unlock) */
3115 SiS_SetRegAND(SiS_Pr->SiS_VidPlay, 0x30, 0xfe); /* Fiddle with video regs */
3116 SiS_SetRegAND(SiS_Pr->SiS_VidPlay, 0x3f, 0xef);
3117 }
3118 /* !!! This does not support modes < 0x13 !!! */
3119#endif
3120}
3121
3122/*********************************************/
3123/* HELPER: SET AGP TIMING FOR SiS760 */
3124/*********************************************/
3125
3126static void
3127SiS_Handle760(struct SiS_Private *SiS_Pr)
3128{
3129#ifdef CONFIG_FB_SIS_315
3130 unsigned int somebase;
3131 unsigned char temp1, temp2, temp3;
3132
3133 if( (SiS_Pr->ChipType != SIS_760) ||
3134 ((SiS_GetReg(SiS_Pr->SiS_P3d4, 0x5c) & 0xf8) != 0x80) ||
3135 (!(SiS_Pr->SiS_SysFlags & SF_760LFB)) ||
3136 (!(SiS_Pr->SiS_SysFlags & SF_760UMA)) )
3137 return;
3138
3139 somebase = sisfb_read_mio_pci_word(SiS_Pr, 0x74);
3140 somebase &= 0xffff;
3141
3142 if(somebase == 0) return;
3143
3144 temp3 = SiS_GetRegByte((somebase + 0x85)) & 0xb7;
3145
3146 if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x31) & 0x40) {
3147 temp1 = 0x21;
3148 temp2 = 0x03;
3149 temp3 |= 0x08;
3150 } else {
3151 temp1 = 0x25;
3152 temp2 = 0x0b;
3153 }
3154
3155 sisfb_write_nbridge_pci_byte(SiS_Pr, 0x7e, temp1);
3156 sisfb_write_nbridge_pci_byte(SiS_Pr, 0x8d, temp2);
3157
3158 SiS_SetRegByte((somebase + 0x85), temp3);
3159#endif
3160}
3161
3162/*********************************************/
3163/* SiSSetMode() */
3164/*********************************************/
3165
3166bool
3167SiSSetMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
3168{
3169 SISIOADDRESS BaseAddr = SiS_Pr->IOAddress;
3170 unsigned short RealModeNo, ModeIdIndex;
3171 unsigned char backupreg = 0;
3172 unsigned short KeepLockReg;
3173
3174 SiS_Pr->UseCustomMode = false;
3175 SiS_Pr->CRT1UsesCustomMode = false;
3176
3177 SiS_Pr->SiS_flag_clearbuffer = 0;
3178
3179 if(SiS_Pr->UseCustomMode) {
3180 ModeNo = 0xfe;
3181 } else {
3182 if(!(ModeNo & 0x80)) SiS_Pr->SiS_flag_clearbuffer = 1;
3183 ModeNo &= 0x7f;
3184 }
3185
3186 /* Don't use FSTN mode for CRT1 */
3187 RealModeNo = ModeNo;
3188 if(ModeNo == 0x5b) ModeNo = 0x56;
3189
3190 SiSInitPtr(SiS_Pr);
3191 SiSRegInit(SiS_Pr, BaseAddr);
3192 SiS_GetSysFlags(SiS_Pr);
3193
3194 SiS_Pr->SiS_VGAINFO = 0x11;
3195
3196 KeepLockReg = SiS_GetReg(SiS_Pr->SiS_P3c4,0x05);
3197 SiS_SetReg(SiS_Pr->SiS_P3c4,0x05,0x86);
3198
3199 SiSInitPCIetc(SiS_Pr);
3200 SiSSetLVDSetc(SiS_Pr);
3201 SiSDetermineROMUsage(SiS_Pr);
3202
3203 SiS_UnLockCRT2(SiS_Pr);
3204
3205 if(!SiS_Pr->UseCustomMode) {
3206 if(!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex))) return false;
3207 } else {
3208 ModeIdIndex = 0;
3209 }
3210
3211 SiS_GetVBType(SiS_Pr);
3212
3213 /* Init/restore some VB registers */
3214 SiS_InitVB(SiS_Pr);
3215 if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
3216 if(SiS_Pr->ChipType >= SIS_315H) {
3217 SiS_ResetVB(SiS_Pr);
3218 SiS_SetRegOR(SiS_Pr->SiS_P3c4,0x32,0x10);
3219 SiS_SetRegOR(SiS_Pr->SiS_Part2Port,0x00,0x0c);
3220 backupreg = SiS_GetReg(SiS_Pr->SiS_P3d4,0x38);
3221 } else {
3222 backupreg = SiS_GetReg(SiS_Pr->SiS_P3d4,0x35);
3223 }
3224 }
3225
3226 /* Get VB information (connectors, connected devices) */
3227 SiS_GetVBInfo(SiS_Pr, ModeNo, ModeIdIndex, (SiS_Pr->UseCustomMode) ? 0 : 1);
3228 SiS_SetYPbPr(SiS_Pr);
3229 SiS_SetTVMode(SiS_Pr, ModeNo, ModeIdIndex);
3230 SiS_GetLCDResInfo(SiS_Pr, ModeNo, ModeIdIndex);
3231 SiS_SetLowModeTest(SiS_Pr, ModeNo);
3232
3233 /* Check memory size (kernel framebuffer driver only) */
3234 if(!SiS_CheckMemorySize(SiS_Pr, ModeNo, ModeIdIndex)) {
3235 return false;
3236 }
3237
3238 SiS_OpenCRTC(SiS_Pr);
3239
3240 if(SiS_Pr->UseCustomMode) {
3241 SiS_Pr->CRT1UsesCustomMode = true;
3242 SiS_Pr->CSRClock_CRT1 = SiS_Pr->CSRClock;
3243 SiS_Pr->CModeFlag_CRT1 = SiS_Pr->CModeFlag;
3244 } else {
3245 SiS_Pr->CRT1UsesCustomMode = false;
3246 }
3247
3248 /* Set mode on CRT1 */
3249 if( (SiS_Pr->SiS_VBInfo & (SetSimuScanMode | SetCRT2ToLCDA)) ||
3250 (!(SiS_Pr->SiS_VBInfo & SwitchCRT2)) ) {
3251 SiS_SetCRT1Group(SiS_Pr, ModeNo, ModeIdIndex);
3252 }
3253
3254 /* Set mode on CRT2 */
3255 if(SiS_Pr->SiS_VBInfo & (SetSimuScanMode | SwitchCRT2 | SetCRT2ToLCDA)) {
3256 if( (SiS_Pr->SiS_VBType & VB_SISVB) ||
3257 (SiS_Pr->SiS_IF_DEF_LVDS == 1) ||
3258 (SiS_Pr->SiS_IF_DEF_CH70xx != 0) ||
3259 (SiS_Pr->SiS_IF_DEF_TRUMPION != 0) ) {
3260 SiS_SetCRT2Group(SiS_Pr, RealModeNo);
3261 }
3262 }
3263
3264 SiS_HandleCRT1(SiS_Pr);
3265
3266 SiS_StrangeStuff(SiS_Pr);
3267
3268 SiS_DisplayOn(SiS_Pr);
3269 SiS_SetRegByte(SiS_Pr->SiS_P3c6,0xFF);
3270
3271#ifdef CONFIG_FB_SIS_315
3272 if(SiS_Pr->ChipType >= SIS_315H) {
3273 if(SiS_Pr->SiS_IF_DEF_LVDS == 1) {
3274 if(!(SiS_IsDualEdge(SiS_Pr))) {
3275 SiS_SetRegAND(SiS_Pr->SiS_Part1Port,0x13,0xfb);
3276 }
3277 }
3278 }
3279#endif
3280
3281 if(SiS_Pr->SiS_VBType & VB_SIS30xBLV) {
3282 if(SiS_Pr->ChipType >= SIS_315H) {
3283#ifdef CONFIG_FB_SIS_315
3284 if(!SiS_Pr->SiS_ROMNew) {
3285 if(SiS_IsVAMode(SiS_Pr)) {
3286 SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x35,0x01);
3287 } else {
3288 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x35,0xFE);
3289 }
3290 }
3291
3292 SiS_SetReg(SiS_Pr->SiS_P3d4,0x38,backupreg);
3293
3294 if((IS_SIS650) && (SiS_GetReg(SiS_Pr->SiS_P3d4,0x30) & 0xfc)) {
3295 if((ModeNo == 0x03) || (ModeNo == 0x10)) {
3296 SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x51,0x80);
3297 SiS_SetRegOR(SiS_Pr->SiS_P3d4,0x56,0x08);
3298 }
3299 }
3300
3301 if(SiS_GetReg(SiS_Pr->SiS_P3d4,0x30) & SetCRT2ToLCD) {
3302 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x38,0xfc);
3303 }
3304#endif
3305 } else if((SiS_Pr->ChipType == SIS_630) ||
3306 (SiS_Pr->ChipType == SIS_730)) {
3307 SiS_SetReg(SiS_Pr->SiS_P3d4,0x35,backupreg);
3308 }
3309 }
3310
3311 SiS_CloseCRTC(SiS_Pr);
3312
3313 SiS_Handle760(SiS_Pr);
3314
3315 /* We never lock registers in XF86 */
3316 if(KeepLockReg != 0xA1) SiS_SetReg(SiS_Pr->SiS_P3c4,0x05,0x00);
3317
3318 return true;
3319}
3320
3321#ifndef GETBITSTR
3322#define GENBITSMASK(mask) GENMASK(1?mask,0?mask)
3323#define GETBITS(var,mask) (((var) & GENBITSMASK(mask)) >> (0?mask))
3324#define GETBITSTR(val,from,to) ((GETBITS(val,from)) << (0?to))
3325#endif
3326
3327void
3328SiS_CalcCRRegisters(struct SiS_Private *SiS_Pr, int depth)
3329{
3330 int x = 1; /* Fix sync */
3331
3332 SiS_Pr->CCRT1CRTC[0] = ((SiS_Pr->CHTotal >> 3) - 5) & 0xff; /* CR0 */
3333 SiS_Pr->CCRT1CRTC[1] = (SiS_Pr->CHDisplay >> 3) - 1; /* CR1 */
3334 SiS_Pr->CCRT1CRTC[2] = (SiS_Pr->CHBlankStart >> 3) - 1; /* CR2 */
3335 SiS_Pr->CCRT1CRTC[3] = (((SiS_Pr->CHBlankEnd >> 3) - 1) & 0x1F) | 0x80; /* CR3 */
3336 SiS_Pr->CCRT1CRTC[4] = (SiS_Pr->CHSyncStart >> 3) + 3; /* CR4 */
3337 SiS_Pr->CCRT1CRTC[5] = ((((SiS_Pr->CHBlankEnd >> 3) - 1) & 0x20) << 2) | /* CR5 */
3338 (((SiS_Pr->CHSyncEnd >> 3) + 3) & 0x1F);
3339
3340 SiS_Pr->CCRT1CRTC[6] = (SiS_Pr->CVTotal - 2) & 0xFF; /* CR6 */
3341 SiS_Pr->CCRT1CRTC[7] = (((SiS_Pr->CVTotal - 2) & 0x100) >> 8) /* CR7 */
3342 | (((SiS_Pr->CVDisplay - 1) & 0x100) >> 7)
3343 | (((SiS_Pr->CVSyncStart - x) & 0x100) >> 6)
3344 | (((SiS_Pr->CVBlankStart- 1) & 0x100) >> 5)
3345 | 0x10
3346 | (((SiS_Pr->CVTotal - 2) & 0x200) >> 4)
3347 | (((SiS_Pr->CVDisplay - 1) & 0x200) >> 3)
3348 | (((SiS_Pr->CVSyncStart - x) & 0x200) >> 2);
3349
3350 SiS_Pr->CCRT1CRTC[16] = ((((SiS_Pr->CVBlankStart - 1) & 0x200) >> 4) >> 5); /* CR9 */
3351
3352 if(depth != 8) {
3353 if(SiS_Pr->CHDisplay >= 1600) SiS_Pr->CCRT1CRTC[16] |= 0x60; /* SRE */
3354 else if(SiS_Pr->CHDisplay >= 640) SiS_Pr->CCRT1CRTC[16] |= 0x40;
3355 }
3356
3357 SiS_Pr->CCRT1CRTC[8] = (SiS_Pr->CVSyncStart - x) & 0xFF; /* CR10 */
3358 SiS_Pr->CCRT1CRTC[9] = ((SiS_Pr->CVSyncEnd - x) & 0x0F) | 0x80; /* CR11 */
3359 SiS_Pr->CCRT1CRTC[10] = (SiS_Pr->CVDisplay - 1) & 0xFF; /* CR12 */
3360 SiS_Pr->CCRT1CRTC[11] = (SiS_Pr->CVBlankStart - 1) & 0xFF; /* CR15 */
3361 SiS_Pr->CCRT1CRTC[12] = (SiS_Pr->CVBlankEnd - 1) & 0xFF; /* CR16 */
3362
3363 SiS_Pr->CCRT1CRTC[13] = /* SRA */
3364 GETBITSTR((SiS_Pr->CVTotal -2), 10:10, 0:0) |
3365 GETBITSTR((SiS_Pr->CVDisplay -1), 10:10, 1:1) |
3366 GETBITSTR((SiS_Pr->CVBlankStart-1), 10:10, 2:2) |
3367 GETBITSTR((SiS_Pr->CVSyncStart -x), 10:10, 3:3) |
3368 GETBITSTR((SiS_Pr->CVBlankEnd -1), 8:8, 4:4) |
3369 GETBITSTR((SiS_Pr->CVSyncEnd ), 4:4, 5:5) ;
3370
3371 SiS_Pr->CCRT1CRTC[14] = /* SRB */
3372 GETBITSTR((SiS_Pr->CHTotal >> 3) - 5, 9:8, 1:0) |
3373 GETBITSTR((SiS_Pr->CHDisplay >> 3) - 1, 9:8, 3:2) |
3374 GETBITSTR((SiS_Pr->CHBlankStart >> 3) - 1, 9:8, 5:4) |
3375 GETBITSTR((SiS_Pr->CHSyncStart >> 3) + 3, 9:8, 7:6) ;
3376
3377
3378 SiS_Pr->CCRT1CRTC[15] = /* SRC */
3379 GETBITSTR((SiS_Pr->CHBlankEnd >> 3) - 1, 7:6, 1:0) |
3380 GETBITSTR((SiS_Pr->CHSyncEnd >> 3) + 3, 5:5, 2:2) ;
3381}
3382
3383void
3384SiS_CalcLCDACRT1Timing(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
3385 unsigned short ModeIdIndex)
3386{
3387 unsigned short modeflag, tempax, tempbx = 0, remaining = 0;
3388 unsigned short VGAHDE = SiS_Pr->SiS_VGAHDE;
3389 int i, j;
3390
3391 /* 1:1 data: use data set by setcrt1crtc() */
3392 if(SiS_Pr->SiS_LCDInfo & LCDPass11) return;
3393
3394 modeflag = SiS_GetModeFlag(SiS_Pr, ModeNo, ModeIdIndex);
3395
3396 if(modeflag & HalfDCLK) VGAHDE >>= 1;
3397
3398 SiS_Pr->CHDisplay = VGAHDE;
3399 SiS_Pr->CHBlankStart = VGAHDE;
3400
3401 SiS_Pr->CVDisplay = SiS_Pr->SiS_VGAVDE;
3402 SiS_Pr->CVBlankStart = SiS_Pr->SiS_VGAVDE;
3403
3404 if(SiS_Pr->ChipType < SIS_315H) {
3405#ifdef CONFIG_FB_SIS_300
3406 tempbx = SiS_Pr->SiS_VGAHT;
3407 if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
3408 tempbx = SiS_Pr->PanelHT;
3409 }
3410 if(modeflag & HalfDCLK) tempbx >>= 1;
3411 remaining = tempbx % 8;
3412#endif
3413 } else {
3414#ifdef CONFIG_FB_SIS_315
3415 /* OK for LCDA, LVDS */
3416 tempbx = SiS_Pr->PanelHT - SiS_Pr->PanelXRes;
3417 tempax = SiS_Pr->SiS_VGAHDE; /* not /2 ! */
3418 if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
3419 tempax = SiS_Pr->PanelXRes;
3420 }
3421 tempbx += tempax;
3422 if(modeflag & HalfDCLK) tempbx -= VGAHDE;
3423#endif
3424 }
3425 SiS_Pr->CHTotal = SiS_Pr->CHBlankEnd = tempbx;
3426
3427 if(SiS_Pr->ChipType < SIS_315H) {
3428#ifdef CONFIG_FB_SIS_300
3429 if(SiS_Pr->SiS_VGAHDE == SiS_Pr->PanelXRes) {
3430 SiS_Pr->CHSyncStart = SiS_Pr->SiS_VGAHDE + ((SiS_Pr->PanelHRS + 1) & ~1);
3431 SiS_Pr->CHSyncEnd = SiS_Pr->CHSyncStart + SiS_Pr->PanelHRE;
3432 if(modeflag & HalfDCLK) {
3433 SiS_Pr->CHSyncStart >>= 1;
3434 SiS_Pr->CHSyncEnd >>= 1;
3435 }
3436 } else if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
3437 tempax = (SiS_Pr->PanelXRes - SiS_Pr->SiS_VGAHDE) >> 1;
3438 tempbx = (SiS_Pr->PanelHRS + 1) & ~1;
3439 if(modeflag & HalfDCLK) {
3440 tempax >>= 1;
3441 tempbx >>= 1;
3442 }
3443 SiS_Pr->CHSyncStart = (VGAHDE + tempax + tempbx + 7) & ~7;
3444 tempax = SiS_Pr->PanelHRE + 7;
3445 if(modeflag & HalfDCLK) tempax >>= 1;
3446 SiS_Pr->CHSyncEnd = (SiS_Pr->CHSyncStart + tempax) & ~7;
3447 } else {
3448 SiS_Pr->CHSyncStart = SiS_Pr->SiS_VGAHDE;
3449 if(modeflag & HalfDCLK) {
3450 SiS_Pr->CHSyncStart >>= 1;
3451 tempax = ((SiS_Pr->CHTotal - SiS_Pr->CHSyncStart) / 3) << 1;
3452 SiS_Pr->CHSyncEnd = SiS_Pr->CHSyncStart + tempax;
3453 } else {
3454 SiS_Pr->CHSyncEnd = (SiS_Pr->CHSyncStart + (SiS_Pr->CHTotal / 10) + 7) & ~7;
3455 SiS_Pr->CHSyncStart += 8;
3456 }
3457 }
3458#endif
3459 } else {
3460#ifdef CONFIG_FB_SIS_315
3461 tempax = VGAHDE;
3462 if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
3463 tempbx = SiS_Pr->PanelXRes;
3464 if(modeflag & HalfDCLK) tempbx >>= 1;
3465 tempax += ((tempbx - tempax) >> 1);
3466 }
3467 tempax += SiS_Pr->PanelHRS;
3468 SiS_Pr->CHSyncStart = tempax;
3469 tempax += SiS_Pr->PanelHRE;
3470 SiS_Pr->CHSyncEnd = tempax;
3471#endif
3472 }
3473
3474 tempbx = SiS_Pr->PanelVT - SiS_Pr->PanelYRes;
3475 tempax = SiS_Pr->SiS_VGAVDE;
3476 if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
3477 tempax = SiS_Pr->PanelYRes;
3478 } else if(SiS_Pr->ChipType < SIS_315H) {
3479#ifdef CONFIG_FB_SIS_300
3480 /* Stupid hack for 640x400/320x200 */
3481 if(SiS_Pr->SiS_LCDResInfo == Panel_1024x768) {
3482 if((tempax + tempbx) == 438) tempbx += 16;
3483 } else if((SiS_Pr->SiS_LCDResInfo == Panel_800x600) ||
3484 (SiS_Pr->SiS_LCDResInfo == Panel_1024x600)) {
3485 tempax = 0;
3486 tempbx = SiS_Pr->SiS_VGAVT;
3487 }
3488#endif
3489 }
3490 SiS_Pr->CVTotal = SiS_Pr->CVBlankEnd = tempbx + tempax;
3491
3492 tempax = SiS_Pr->SiS_VGAVDE;
3493 if(SiS_Pr->SiS_LCDInfo & DontExpandLCD) {
3494 tempax += (SiS_Pr->PanelYRes - tempax) >> 1;
3495 }
3496 tempax += SiS_Pr->PanelVRS;
3497 SiS_Pr->CVSyncStart = tempax;
3498 tempax += SiS_Pr->PanelVRE;
3499 SiS_Pr->CVSyncEnd = tempax;
3500 if(SiS_Pr->ChipType < SIS_315H) {
3501 SiS_Pr->CVSyncStart--;
3502 SiS_Pr->CVSyncEnd--;
3503 }
3504
3505 SiS_CalcCRRegisters(SiS_Pr, 8);
3506 SiS_Pr->CCRT1CRTC[15] &= ~0xF8;
3507 SiS_Pr->CCRT1CRTC[15] |= (remaining << 4);
3508 SiS_Pr->CCRT1CRTC[16] &= ~0xE0;
3509
3510 SiS_SetRegAND(SiS_Pr->SiS_P3d4,0x11,0x7f);
3511
3512 for(i = 0, j = 0; i <= 7; i++, j++) {
3513 SiS_SetReg(SiS_Pr->SiS_P3d4,j,SiS_Pr->CCRT1CRTC[i]);
3514 }
3515 for(j = 0x10; i <= 10; i++, j++) {
3516 SiS_SetReg(SiS_Pr->SiS_P3d4,j,SiS_Pr->CCRT1CRTC[i]);
3517 }
3518 for(j = 0x15; i <= 12; i++, j++) {
3519 SiS_SetReg(SiS_Pr->SiS_P3d4,j,SiS_Pr->CCRT1CRTC[i]);
3520 }
3521 for(j = 0x0A; i <= 15; i++, j++) {
3522 SiS_SetReg(SiS_Pr->SiS_P3c4,j,SiS_Pr->CCRT1CRTC[i]);
3523 }
3524
3525 tempax = SiS_Pr->CCRT1CRTC[16] & 0xE0;
3526 SiS_SetRegANDOR(SiS_Pr->SiS_P3c4,0x0E,0x1F,tempax);
3527
3528 tempax = (SiS_Pr->CCRT1CRTC[16] & 0x01) << 5;
3529 if(modeflag & DoubleScanMode) tempax |= 0x80;
3530 SiS_SetRegANDOR(SiS_Pr->SiS_P3d4,0x09,0x5F,tempax);
3531
3532}
3533
3534void
3535SiS_Generic_ConvertCRData(struct SiS_Private *SiS_Pr, unsigned char *crdata,
3536 int xres, int yres,
3537 struct fb_var_screeninfo *var, bool writeres
3538)
3539{
3540 unsigned short HRE, HBE, HRS, HDE;
3541 unsigned short VRE, VBE, VRS, VDE;
3542 unsigned char sr_data, cr_data;
3543 int B, C, D, E, F, temp;
3544
3545 sr_data = crdata[14];
3546
3547 /* Horizontal display enable end */
3548 HDE = crdata[1] | ((unsigned short)(sr_data & 0x0C) << 6);
3549 E = HDE + 1;
3550
3551 /* Horizontal retrace (=sync) start */
3552 HRS = crdata[4] | ((unsigned short)(sr_data & 0xC0) << 2);
3553 F = HRS - E - 3;
3554
3555 sr_data = crdata[15];
3556 cr_data = crdata[5];
3557
3558 /* Horizontal blank end */
3559 HBE = (crdata[3] & 0x1f) |
3560 ((unsigned short)(cr_data & 0x80) >> 2) |
3561 ((unsigned short)(sr_data & 0x03) << 6);
3562
3563 /* Horizontal retrace (=sync) end */
3564 HRE = (cr_data & 0x1f) | ((sr_data & 0x04) << 3);
3565
3566 temp = HBE - ((E - 1) & 255);
3567 B = (temp > 0) ? temp : (temp + 256);
3568
3569 temp = HRE - ((E + F + 3) & 63);
3570 C = (temp > 0) ? temp : (temp + 64);
3571
3572 D = B - F - C;
3573
3574 if(writeres) var->xres = xres = E * 8;
3575 var->left_margin = D * 8;
3576 var->right_margin = F * 8;
3577 var->hsync_len = C * 8;
3578
3579 /* Vertical */
3580 sr_data = crdata[13];
3581 cr_data = crdata[7];
3582
3583 /* Vertical display enable end */
3584 VDE = crdata[10] |
3585 ((unsigned short)(cr_data & 0x02) << 7) |
3586 ((unsigned short)(cr_data & 0x40) << 3) |
3587 ((unsigned short)(sr_data & 0x02) << 9);
3588 E = VDE + 1;
3589
3590 /* Vertical retrace (=sync) start */
3591 VRS = crdata[8] |
3592 ((unsigned short)(cr_data & 0x04) << 6) |
3593 ((unsigned short)(cr_data & 0x80) << 2) |
3594 ((unsigned short)(sr_data & 0x08) << 7);
3595 F = VRS + 1 - E;
3596
3597 /* Vertical blank end */
3598 VBE = crdata[12] | ((unsigned short)(sr_data & 0x10) << 4);
3599 temp = VBE - ((E - 1) & 511);
3600 B = (temp > 0) ? temp : (temp + 512);
3601
3602 /* Vertical retrace (=sync) end */
3603 VRE = (crdata[9] & 0x0f) | ((sr_data & 0x20) >> 1);
3604 temp = VRE - ((E + F - 1) & 31);
3605 C = (temp > 0) ? temp : (temp + 32);
3606
3607 D = B - F - C;
3608
3609 if(writeres) var->yres = yres = E;
3610 var->upper_margin = D;
3611 var->lower_margin = F;
3612 var->vsync_len = C;
3613
3614 if((xres == 320) && ((yres == 200) || (yres == 240))) {
3615 /* Terrible hack, but correct CRTC data for
3616 * these modes only produces a black screen...
3617 * (HRE is 0, leading into a too large C and
3618 * a negative D. The CRT controller does not
3619 * seem to like correcting HRE to 50)
3620 */
3621 var->left_margin = (400 - 376);
3622 var->right_margin = (328 - 320);
3623 var->hsync_len = (376 - 328);
3624
3625 }
3626
3627}
3628
3629
3630
3631