1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
2 /*
3 * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles
4 *
5 * Display mode initializing code
6 *
7 * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
8 *
9 * If distributed as part of the Linux kernel, this code is licensed under the
10 * terms of the GPL v2.
11 *
12 * Otherwise, the following license terms apply:
13 *
14 * * Redistribution and use in source and binary forms, with or without
15 * * modification, are permitted provided that the following conditions
16 * * are met:
17 * * 1) Redistributions of source code must retain the above copyright
18 * * notice, this list of conditions and the following disclaimer.
19 * * 2) Redistributions in binary form must reproduce the above copyright
20 * * notice, this list of conditions and the following disclaimer in the
21 * * documentation and/or other materials provided with the distribution.
22 * * 3) The name of the author may not be used to endorse or promote products
23 * * derived from this software without specific prior written permission.
24 * *
25 * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Author: Thomas Winischhofer <thomas@winischhofer.net>
37 *
38 */
39
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/errno.h>
43 #include <linux/poll.h>
44 #include <linux/spinlock.h>
45
46 #include "sisusb.h"
47 #include "sisusb_init.h"
48 #include "sisusb_tables.h"
49
50 /*********************************************/
51 /* POINTER INITIALIZATION */
52 /*********************************************/
53
SiSUSB_InitPtr(struct SiS_Private * SiS_Pr)54 static void SiSUSB_InitPtr(struct SiS_Private *SiS_Pr)
55 {
56 SiS_Pr->SiS_ModeResInfo = SiSUSB_ModeResInfo;
57 SiS_Pr->SiS_StandTable = SiSUSB_StandTable;
58
59 SiS_Pr->SiS_SModeIDTable = SiSUSB_SModeIDTable;
60 SiS_Pr->SiS_EModeIDTable = SiSUSB_EModeIDTable;
61 SiS_Pr->SiS_RefIndex = SiSUSB_RefIndex;
62 SiS_Pr->SiS_CRT1Table = SiSUSB_CRT1Table;
63
64 SiS_Pr->SiS_VCLKData = SiSUSB_VCLKData;
65 }
66
67 /*********************************************/
68 /* HELPER: SetReg, GetReg */
69 /*********************************************/
70
71 static void
SiS_SetReg(struct SiS_Private * SiS_Pr,unsigned long port,unsigned short index,unsigned short data)72 SiS_SetReg(struct SiS_Private *SiS_Pr, unsigned long port,
73 unsigned short index, unsigned short data)
74 {
75 sisusb_setidxreg(SiS_Pr->sisusb, port, index, data);
76 }
77
78 static void
SiS_SetRegByte(struct SiS_Private * SiS_Pr,unsigned long port,unsigned short data)79 SiS_SetRegByte(struct SiS_Private *SiS_Pr, unsigned long port,
80 unsigned short data)
81 {
82 sisusb_setreg(SiS_Pr->sisusb, port, data);
83 }
84
85 static unsigned char
SiS_GetReg(struct SiS_Private * SiS_Pr,unsigned long port,unsigned short index)86 SiS_GetReg(struct SiS_Private *SiS_Pr, unsigned long port, unsigned short index)
87 {
88 u8 data;
89
90 sisusb_getidxreg(SiS_Pr->sisusb, port, index, &data);
91
92 return data;
93 }
94
95 static unsigned char
SiS_GetRegByte(struct SiS_Private * SiS_Pr,unsigned long port)96 SiS_GetRegByte(struct SiS_Private *SiS_Pr, unsigned long port)
97 {
98 u8 data;
99
100 sisusb_getreg(SiS_Pr->sisusb, port, &data);
101
102 return data;
103 }
104
105 static void
SiS_SetRegANDOR(struct SiS_Private * SiS_Pr,unsigned long port,unsigned short index,unsigned short DataAND,unsigned short DataOR)106 SiS_SetRegANDOR(struct SiS_Private *SiS_Pr, unsigned long port,
107 unsigned short index, unsigned short DataAND,
108 unsigned short DataOR)
109 {
110 sisusb_setidxregandor(SiS_Pr->sisusb, port, index, DataAND, DataOR);
111 }
112
113 static void
SiS_SetRegAND(struct SiS_Private * SiS_Pr,unsigned long port,unsigned short index,unsigned short DataAND)114 SiS_SetRegAND(struct SiS_Private *SiS_Pr, unsigned long port,
115 unsigned short index, unsigned short DataAND)
116 {
117 sisusb_setidxregand(SiS_Pr->sisusb, port, index, DataAND);
118 }
119
120 static void
SiS_SetRegOR(struct SiS_Private * SiS_Pr,unsigned long port,unsigned short index,unsigned short DataOR)121 SiS_SetRegOR(struct SiS_Private *SiS_Pr, unsigned long port,
122 unsigned short index, unsigned short DataOR)
123 {
124 sisusb_setidxregor(SiS_Pr->sisusb, port, index, DataOR);
125 }
126
127 /*********************************************/
128 /* HELPER: DisplayOn, DisplayOff */
129 /*********************************************/
130
SiS_DisplayOn(struct SiS_Private * SiS_Pr)131 static void SiS_DisplayOn(struct SiS_Private *SiS_Pr)
132 {
133 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x01, 0xDF);
134 }
135
136 /*********************************************/
137 /* HELPER: Init Port Addresses */
138 /*********************************************/
139
SiSUSBRegInit(struct SiS_Private * SiS_Pr,unsigned long BaseAddr)140 static void SiSUSBRegInit(struct SiS_Private *SiS_Pr, unsigned long BaseAddr)
141 {
142 SiS_Pr->SiS_P3c4 = BaseAddr + 0x14;
143 SiS_Pr->SiS_P3d4 = BaseAddr + 0x24;
144 SiS_Pr->SiS_P3c0 = BaseAddr + 0x10;
145 SiS_Pr->SiS_P3ce = BaseAddr + 0x1e;
146 SiS_Pr->SiS_P3c2 = BaseAddr + 0x12;
147 SiS_Pr->SiS_P3ca = BaseAddr + 0x1a;
148 SiS_Pr->SiS_P3c6 = BaseAddr + 0x16;
149 SiS_Pr->SiS_P3c7 = BaseAddr + 0x17;
150 SiS_Pr->SiS_P3c8 = BaseAddr + 0x18;
151 SiS_Pr->SiS_P3c9 = BaseAddr + 0x19;
152 SiS_Pr->SiS_P3cb = BaseAddr + 0x1b;
153 SiS_Pr->SiS_P3cc = BaseAddr + 0x1c;
154 SiS_Pr->SiS_P3cd = BaseAddr + 0x1d;
155 SiS_Pr->SiS_P3da = BaseAddr + 0x2a;
156 SiS_Pr->SiS_Part1Port = BaseAddr + SIS_CRT2_PORT_04;
157 }
158
159 /*********************************************/
160 /* HELPER: GetSysFlags */
161 /*********************************************/
162
SiS_GetSysFlags(struct SiS_Private * SiS_Pr)163 static void SiS_GetSysFlags(struct SiS_Private *SiS_Pr)
164 {
165 SiS_Pr->SiS_MyCR63 = 0x63;
166 }
167
168 /*********************************************/
169 /* HELPER: Init PCI & Engines */
170 /*********************************************/
171
SiSInitPCIetc(struct SiS_Private * SiS_Pr)172 static void SiSInitPCIetc(struct SiS_Private *SiS_Pr)
173 {
174 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x20, 0xa1);
175 /* - Enable 2D (0x40)
176 * - Enable 3D (0x02)
177 * - Enable 3D vertex command fetch (0x10)
178 * - Enable 3D command parser (0x08)
179 * - Enable 3D G/L transformation engine (0x80)
180 */
181 SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1E, 0xDA);
182 }
183
184 /*********************************************/
185 /* HELPER: SET SEGMENT REGISTERS */
186 /*********************************************/
187
SiS_SetSegRegLower(struct SiS_Private * SiS_Pr,unsigned short value)188 static void SiS_SetSegRegLower(struct SiS_Private *SiS_Pr, unsigned short value)
189 {
190 unsigned short temp;
191
192 value &= 0x00ff;
193 temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb) & 0xf0;
194 temp |= (value >> 4);
195 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb, temp);
196 temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd) & 0xf0;
197 temp |= (value & 0x0f);
198 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd, temp);
199 }
200
SiS_SetSegRegUpper(struct SiS_Private * SiS_Pr,unsigned short value)201 static void SiS_SetSegRegUpper(struct SiS_Private *SiS_Pr, unsigned short value)
202 {
203 unsigned short temp;
204
205 value &= 0x00ff;
206 temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb) & 0x0f;
207 temp |= (value & 0xf0);
208 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb, temp);
209 temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd) & 0x0f;
210 temp |= (value << 4);
211 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd, temp);
212 }
213
SiS_SetSegmentReg(struct SiS_Private * SiS_Pr,unsigned short value)214 static void SiS_SetSegmentReg(struct SiS_Private *SiS_Pr, unsigned short value)
215 {
216 SiS_SetSegRegLower(SiS_Pr, value);
217 SiS_SetSegRegUpper(SiS_Pr, value);
218 }
219
SiS_ResetSegmentReg(struct SiS_Private * SiS_Pr)220 static void SiS_ResetSegmentReg(struct SiS_Private *SiS_Pr)
221 {
222 SiS_SetSegmentReg(SiS_Pr, 0);
223 }
224
225 static void
SiS_SetSegmentRegOver(struct SiS_Private * SiS_Pr,unsigned short value)226 SiS_SetSegmentRegOver(struct SiS_Private *SiS_Pr, unsigned short value)
227 {
228 unsigned short temp = value >> 8;
229
230 temp &= 0x07;
231 temp |= (temp << 4);
232 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1d, temp);
233 SiS_SetSegmentReg(SiS_Pr, value);
234 }
235
SiS_ResetSegmentRegOver(struct SiS_Private * SiS_Pr)236 static void SiS_ResetSegmentRegOver(struct SiS_Private *SiS_Pr)
237 {
238 SiS_SetSegmentRegOver(SiS_Pr, 0);
239 }
240
SiS_ResetSegmentRegisters(struct SiS_Private * SiS_Pr)241 static void SiS_ResetSegmentRegisters(struct SiS_Private *SiS_Pr)
242 {
243 SiS_ResetSegmentReg(SiS_Pr);
244 SiS_ResetSegmentRegOver(SiS_Pr);
245 }
246
247 /*********************************************/
248 /* HELPER: SearchModeID */
249 /*********************************************/
250
251 static int
SiS_SearchModeID(struct SiS_Private * SiS_Pr,unsigned short * ModeNo,unsigned short * ModeIdIndex)252 SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
253 unsigned short *ModeIdIndex)
254 {
255 if ((*ModeNo) <= 0x13) {
256
257 if ((*ModeNo) != 0x03)
258 return 0;
259
260 (*ModeIdIndex) = 0;
261
262 } else {
263
264 for (*ModeIdIndex = 0;; (*ModeIdIndex)++) {
265
266 if (SiS_Pr->SiS_EModeIDTable[*ModeIdIndex].Ext_ModeID ==
267 (*ModeNo))
268 break;
269
270 if (SiS_Pr->SiS_EModeIDTable[*ModeIdIndex].Ext_ModeID ==
271 0xFF)
272 return 0;
273 }
274
275 }
276
277 return 1;
278 }
279
280 /*********************************************/
281 /* HELPER: ENABLE CRT1 */
282 /*********************************************/
283
SiS_HandleCRT1(struct SiS_Private * SiS_Pr)284 static void SiS_HandleCRT1(struct SiS_Private *SiS_Pr)
285 {
286 /* Enable CRT1 gating */
287 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3d4, SiS_Pr->SiS_MyCR63, 0xbf);
288 }
289
290 /*********************************************/
291 /* HELPER: GetColorDepth */
292 /*********************************************/
293
294 static unsigned short
SiS_GetColorDepth(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short ModeIdIndex)295 SiS_GetColorDepth(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
296 unsigned short ModeIdIndex)
297 {
298 static const unsigned short ColorDepth[6] = { 1, 2, 4, 4, 6, 8 };
299 unsigned short modeflag;
300 short index;
301
302 if (ModeNo <= 0x13) {
303 modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
304 } else {
305 modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
306 }
307
308 index = (modeflag & ModeTypeMask) - ModeEGA;
309 if (index < 0)
310 index = 0;
311 return ColorDepth[index];
312 }
313
314 /*********************************************/
315 /* HELPER: GetOffset */
316 /*********************************************/
317
318 static unsigned short
SiS_GetOffset(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short ModeIdIndex,unsigned short rrti)319 SiS_GetOffset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
320 unsigned short ModeIdIndex, unsigned short rrti)
321 {
322 unsigned short xres, temp, colordepth, infoflag;
323
324 infoflag = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag;
325 xres = SiS_Pr->SiS_RefIndex[rrti].XRes;
326
327 colordepth = SiS_GetColorDepth(SiS_Pr, ModeNo, ModeIdIndex);
328
329 temp = xres / 16;
330
331 if (infoflag & InterlaceMode)
332 temp <<= 1;
333
334 temp *= colordepth;
335
336 if (xres % 16)
337 temp += (colordepth >> 1);
338
339 return temp;
340 }
341
342 /*********************************************/
343 /* SEQ */
344 /*********************************************/
345
346 static void
SiS_SetSeqRegs(struct SiS_Private * SiS_Pr,unsigned short StandTableIndex)347 SiS_SetSeqRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
348 {
349 unsigned char SRdata;
350 int i;
351
352 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x00, 0x03);
353
354 SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[0] | 0x20;
355 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x01, SRdata);
356
357 for (i = 2; i <= 4; i++) {
358 SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[i - 1];
359 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, i, SRdata);
360 }
361 }
362
363 /*********************************************/
364 /* MISC */
365 /*********************************************/
366
367 static void
SiS_SetMiscRegs(struct SiS_Private * SiS_Pr,unsigned short StandTableIndex)368 SiS_SetMiscRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
369 {
370 unsigned char Miscdata = SiS_Pr->SiS_StandTable[StandTableIndex].MISC;
371
372 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c2, Miscdata);
373 }
374
375 /*********************************************/
376 /* CRTC */
377 /*********************************************/
378
379 static void
SiS_SetCRTCRegs(struct SiS_Private * SiS_Pr,unsigned short StandTableIndex)380 SiS_SetCRTCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
381 {
382 unsigned char CRTCdata;
383 unsigned short i;
384
385 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3d4, 0x11, 0x7f);
386
387 for (i = 0; i <= 0x18; i++) {
388 CRTCdata = SiS_Pr->SiS_StandTable[StandTableIndex].CRTC[i];
389 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, i, CRTCdata);
390 }
391 }
392
393 /*********************************************/
394 /* ATT */
395 /*********************************************/
396
397 static void
SiS_SetATTRegs(struct SiS_Private * SiS_Pr,unsigned short StandTableIndex)398 SiS_SetATTRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
399 {
400 unsigned char ARdata;
401 unsigned short i;
402
403 for (i = 0; i <= 0x13; i++) {
404 ARdata = SiS_Pr->SiS_StandTable[StandTableIndex].ATTR[i];
405 SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
406 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, i);
407 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, ARdata);
408 }
409 SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
410 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, 0x14);
411 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, 0x00);
412
413 SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
414 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, 0x20);
415 SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
416 }
417
418 /*********************************************/
419 /* GRC */
420 /*********************************************/
421
422 static void
SiS_SetGRCRegs(struct SiS_Private * SiS_Pr,unsigned short StandTableIndex)423 SiS_SetGRCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
424 {
425 unsigned char GRdata;
426 unsigned short i;
427
428 for (i = 0; i <= 0x08; i++) {
429 GRdata = SiS_Pr->SiS_StandTable[StandTableIndex].GRC[i];
430 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3ce, i, GRdata);
431 }
432
433 if (SiS_Pr->SiS_ModeType > ModeVGA) {
434 /* 256 color disable */
435 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3ce, 0x05, 0xBF);
436 }
437 }
438
439 /*********************************************/
440 /* CLEAR EXTENDED REGISTERS */
441 /*********************************************/
442
SiS_ClearExt1Regs(struct SiS_Private * SiS_Pr,unsigned short ModeNo)443 static void SiS_ClearExt1Regs(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
444 {
445 int i;
446
447 for (i = 0x0A; i <= 0x0E; i++) {
448 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, i, 0x00);
449 }
450
451 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x37, 0xFE);
452 }
453
454 /*********************************************/
455 /* Get rate index */
456 /*********************************************/
457
458 static unsigned short
SiS_GetRatePtr(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short ModeIdIndex)459 SiS_GetRatePtr(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
460 unsigned short ModeIdIndex)
461 {
462 unsigned short rrti, i, index, temp;
463
464 if (ModeNo <= 0x13)
465 return 0xFFFF;
466
467 index = SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x33) & 0x0F;
468 if (index > 0)
469 index--;
470
471 rrti = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
472 ModeNo = SiS_Pr->SiS_RefIndex[rrti].ModeID;
473
474 i = 0;
475 do {
476 if (SiS_Pr->SiS_RefIndex[rrti + i].ModeID != ModeNo)
477 break;
478
479 temp =
480 SiS_Pr->SiS_RefIndex[rrti + i].Ext_InfoFlag & ModeTypeMask;
481 if (temp < SiS_Pr->SiS_ModeType)
482 break;
483
484 i++;
485 index--;
486 } while (index != 0xFFFF);
487
488 i--;
489
490 return (rrti + i);
491 }
492
493 /*********************************************/
494 /* SYNC */
495 /*********************************************/
496
SiS_SetCRT1Sync(struct SiS_Private * SiS_Pr,unsigned short rrti)497 static void SiS_SetCRT1Sync(struct SiS_Private *SiS_Pr, unsigned short rrti)
498 {
499 unsigned short sync = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag >> 8;
500 sync &= 0xC0;
501 sync |= 0x2f;
502 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c2, sync);
503 }
504
505 /*********************************************/
506 /* CRTC/2 */
507 /*********************************************/
508
509 static void
SiS_SetCRT1CRTC(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short ModeIdIndex,unsigned short rrti)510 SiS_SetCRT1CRTC(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
511 unsigned short ModeIdIndex, unsigned short rrti)
512 {
513 unsigned char index;
514 unsigned short temp, i, j, modeflag;
515
516 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3d4, 0x11, 0x7f);
517
518 modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
519
520 index = SiS_Pr->SiS_RefIndex[rrti].Ext_CRT1CRTC;
521
522 for (i = 0, j = 0; i <= 7; i++, j++) {
523 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, j,
524 SiS_Pr->SiS_CRT1Table[index].CR[i]);
525 }
526 for (j = 0x10; i <= 10; i++, j++) {
527 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, j,
528 SiS_Pr->SiS_CRT1Table[index].CR[i]);
529 }
530 for (j = 0x15; i <= 12; i++, j++) {
531 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, j,
532 SiS_Pr->SiS_CRT1Table[index].CR[i]);
533 }
534 for (j = 0x0A; i <= 15; i++, j++) {
535 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, j,
536 SiS_Pr->SiS_CRT1Table[index].CR[i]);
537 }
538
539 temp = SiS_Pr->SiS_CRT1Table[index].CR[16] & 0xE0;
540 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0E, temp);
541
542 temp = ((SiS_Pr->SiS_CRT1Table[index].CR[16]) & 0x01) << 5;
543 if (modeflag & DoubleScanMode)
544 temp |= 0x80;
545 SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3d4, 0x09, 0x5F, temp);
546
547 if (SiS_Pr->SiS_ModeType > ModeVGA)
548 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x14, 0x4F);
549 }
550
551 /*********************************************/
552 /* OFFSET & PITCH */
553 /*********************************************/
554 /* (partly overruled by SetPitch() in XF86) */
555 /*********************************************/
556
557 static void
SiS_SetCRT1Offset(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short ModeIdIndex,unsigned short rrti)558 SiS_SetCRT1Offset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
559 unsigned short ModeIdIndex, unsigned short rrti)
560 {
561 unsigned short du = SiS_GetOffset(SiS_Pr, ModeNo, ModeIdIndex, rrti);
562 unsigned short infoflag = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag;
563 unsigned short temp;
564
565 temp = (du >> 8) & 0x0f;
566 SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0E, 0xF0, temp);
567
568 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x13, (du & 0xFF));
569
570 if (infoflag & InterlaceMode)
571 du >>= 1;
572
573 du <<= 5;
574 temp = (du >> 8) & 0xff;
575 if (du & 0xff)
576 temp++;
577 temp++;
578 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x10, temp);
579 }
580
581 /*********************************************/
582 /* VCLK */
583 /*********************************************/
584
585 static void
SiS_SetCRT1VCLK(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short rrti)586 SiS_SetCRT1VCLK(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
587 unsigned short rrti)
588 {
589 unsigned short index = SiS_Pr->SiS_RefIndex[rrti].Ext_CRTVCLK;
590 unsigned short clka = SiS_Pr->SiS_VCLKData[index].SR2B;
591 unsigned short clkb = SiS_Pr->SiS_VCLKData[index].SR2C;
592
593 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x31, 0xCF);
594
595 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x2B, clka);
596 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x2C, clkb);
597 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x2D, 0x01);
598 }
599
600 /*********************************************/
601 /* FIFO */
602 /*********************************************/
603
604 static void
SiS_SetCRT1FIFO_310(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short mi)605 SiS_SetCRT1FIFO_310(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
606 unsigned short mi)
607 {
608 unsigned short modeflag = SiS_Pr->SiS_EModeIDTable[mi].Ext_ModeFlag;
609
610 /* disable auto-threshold */
611 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x3D, 0xFE);
612
613 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x08, 0xAE);
614 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x09, 0xF0);
615
616 if (ModeNo <= 0x13)
617 return;
618
619 if ((!(modeflag & DoubleScanMode)) || (!(modeflag & HalfDCLK))) {
620 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x08, 0x34);
621 SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x3D, 0x01);
622 }
623 }
624
625 /*********************************************/
626 /* MODE REGISTERS */
627 /*********************************************/
628
629 static void
SiS_SetVCLKState(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short rrti)630 SiS_SetVCLKState(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
631 unsigned short rrti)
632 {
633 unsigned short data = 0, VCLK = 0, index = 0;
634
635 if (ModeNo > 0x13) {
636 index = SiS_Pr->SiS_RefIndex[rrti].Ext_CRTVCLK;
637 VCLK = SiS_Pr->SiS_VCLKData[index].CLOCK;
638 }
639
640 if (VCLK >= 166)
641 data |= 0x0c;
642 SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x32, 0xf3, data);
643
644 if (VCLK >= 166)
645 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1f, 0xe7);
646
647 /* DAC speed */
648 data = 0x03;
649 if (VCLK >= 260)
650 data = 0x00;
651 else if (VCLK >= 160)
652 data = 0x01;
653 else if (VCLK >= 135)
654 data = 0x02;
655
656 SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x07, 0xF8, data);
657 }
658
659 static void
SiS_SetCRT1ModeRegs(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short ModeIdIndex,unsigned short rrti)660 SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
661 unsigned short ModeIdIndex, unsigned short rrti)
662 {
663 unsigned short data, infoflag = 0, modeflag;
664
665 if (ModeNo <= 0x13)
666 modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
667 else {
668 modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
669 infoflag = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag;
670 }
671
672 /* Disable DPMS */
673 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1F, 0x3F);
674
675 data = 0;
676 if (ModeNo > 0x13) {
677 if (SiS_Pr->SiS_ModeType > ModeEGA) {
678 data |= 0x02;
679 data |= ((SiS_Pr->SiS_ModeType - ModeVGA) << 2);
680 }
681 if (infoflag & InterlaceMode)
682 data |= 0x20;
683 }
684 SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x06, 0xC0, data);
685
686 data = 0;
687 if (infoflag & InterlaceMode) {
688 /* data = (Hsync / 8) - ((Htotal / 8) / 2) + 3 */
689 unsigned short hrs =
690 (SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x04) |
691 ((SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0b) & 0xc0) << 2))
692 - 3;
693 unsigned short hto =
694 (SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x00) |
695 ((SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0b) & 0x03) << 8))
696 + 5;
697 data = hrs - (hto >> 1) + 3;
698 }
699 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x19, (data & 0xFF));
700 SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3d4, 0x1a, 0xFC, (data >> 8));
701
702 if (modeflag & HalfDCLK)
703 SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x01, 0x08);
704
705 data = 0;
706 if (modeflag & LineCompareOff)
707 data = 0x08;
708 SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0F, 0xB7, data);
709
710 if ((SiS_Pr->SiS_ModeType == ModeEGA) && (ModeNo > 0x13))
711 SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0F, 0x40);
712
713 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x31, 0xfb);
714
715 data = 0x60;
716 if (SiS_Pr->SiS_ModeType != ModeText) {
717 data ^= 0x60;
718 if (SiS_Pr->SiS_ModeType != ModeEGA)
719 data ^= 0xA0;
720 }
721 SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x21, 0x1F, data);
722
723 SiS_SetVCLKState(SiS_Pr, ModeNo, rrti);
724
725 if (SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x31) & 0x40)
726 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x52, 0x2c);
727 else
728 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x52, 0x6c);
729 }
730
731 /*********************************************/
732 /* LOAD DAC */
733 /*********************************************/
734
735 static void
SiS_WriteDAC(struct SiS_Private * SiS_Pr,unsigned long DACData,unsigned short shiftflag,unsigned short dl,unsigned short ah,unsigned short al,unsigned short dh)736 SiS_WriteDAC(struct SiS_Private *SiS_Pr, unsigned long DACData,
737 unsigned short shiftflag, unsigned short dl, unsigned short ah,
738 unsigned short al, unsigned short dh)
739 {
740 unsigned short d1, d2, d3;
741
742 switch (dl) {
743 case 0:
744 d1 = dh;
745 d2 = ah;
746 d3 = al;
747 break;
748 case 1:
749 d1 = ah;
750 d2 = al;
751 d3 = dh;
752 break;
753 default:
754 d1 = al;
755 d2 = dh;
756 d3 = ah;
757 }
758 SiS_SetRegByte(SiS_Pr, DACData, (d1 << shiftflag));
759 SiS_SetRegByte(SiS_Pr, DACData, (d2 << shiftflag));
760 SiS_SetRegByte(SiS_Pr, DACData, (d3 << shiftflag));
761 }
762
763 static void
SiS_LoadDAC(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short mi)764 SiS_LoadDAC(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
765 unsigned short mi)
766 {
767 unsigned short data, data2, time, i, j, k, m, n, o;
768 unsigned short si, di, bx, sf;
769 unsigned long DACAddr, DACData;
770 const unsigned char *table = NULL;
771
772 if (ModeNo < 0x13)
773 data = SiS_Pr->SiS_SModeIDTable[mi].St_ModeFlag;
774 else
775 data = SiS_Pr->SiS_EModeIDTable[mi].Ext_ModeFlag;
776
777 data &= DACInfoFlag;
778
779 j = time = 64;
780 if (data == 0x00)
781 table = SiS_MDA_DAC;
782 else if (data == 0x08)
783 table = SiS_CGA_DAC;
784 else if (data == 0x10)
785 table = SiS_EGA_DAC;
786 else {
787 j = 16;
788 time = 256;
789 table = SiS_VGA_DAC;
790 }
791
792 DACAddr = SiS_Pr->SiS_P3c8;
793 DACData = SiS_Pr->SiS_P3c9;
794 sf = 0;
795 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c6, 0xFF);
796
797 SiS_SetRegByte(SiS_Pr, DACAddr, 0x00);
798
799 for (i = 0; i < j; i++) {
800 data = table[i];
801 for (k = 0; k < 3; k++) {
802 data2 = 0;
803 if (data & 0x01)
804 data2 += 0x2A;
805 if (data & 0x02)
806 data2 += 0x15;
807 SiS_SetRegByte(SiS_Pr, DACData, (data2 << sf));
808 data >>= 2;
809 }
810 }
811
812 if (time == 256) {
813 for (i = 16; i < 32; i++) {
814 data = table[i] << sf;
815 for (k = 0; k < 3; k++)
816 SiS_SetRegByte(SiS_Pr, DACData, data);
817 }
818 si = 32;
819 for (m = 0; m < 9; m++) {
820 di = si;
821 bx = si + 4;
822 for (n = 0; n < 3; n++) {
823 for (o = 0; o < 5; o++) {
824 SiS_WriteDAC(SiS_Pr, DACData, sf, n,
825 table[di], table[bx],
826 table[si]);
827 si++;
828 }
829 si -= 2;
830 for (o = 0; o < 3; o++) {
831 SiS_WriteDAC(SiS_Pr, DACData, sf, n,
832 table[di], table[si],
833 table[bx]);
834 si--;
835 }
836 }
837 si += 5;
838 }
839 }
840 }
841
842 /*********************************************/
843 /* SET CRT1 REGISTER GROUP */
844 /*********************************************/
845
846 static void
SiS_SetCRT1Group(struct SiS_Private * SiS_Pr,unsigned short ModeNo,unsigned short ModeIdIndex)847 SiS_SetCRT1Group(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
848 unsigned short ModeIdIndex)
849 {
850 unsigned short StandTableIndex, rrti;
851
852 SiS_Pr->SiS_CRT1Mode = ModeNo;
853
854 if (ModeNo <= 0x13)
855 StandTableIndex = 0;
856 else
857 StandTableIndex = 1;
858
859 SiS_ResetSegmentRegisters(SiS_Pr);
860 SiS_SetSeqRegs(SiS_Pr, StandTableIndex);
861 SiS_SetMiscRegs(SiS_Pr, StandTableIndex);
862 SiS_SetCRTCRegs(SiS_Pr, StandTableIndex);
863 SiS_SetATTRegs(SiS_Pr, StandTableIndex);
864 SiS_SetGRCRegs(SiS_Pr, StandTableIndex);
865 SiS_ClearExt1Regs(SiS_Pr, ModeNo);
866
867 rrti = SiS_GetRatePtr(SiS_Pr, ModeNo, ModeIdIndex);
868
869 if (rrti != 0xFFFF) {
870 SiS_SetCRT1Sync(SiS_Pr, rrti);
871 SiS_SetCRT1CRTC(SiS_Pr, ModeNo, ModeIdIndex, rrti);
872 SiS_SetCRT1Offset(SiS_Pr, ModeNo, ModeIdIndex, rrti);
873 SiS_SetCRT1VCLK(SiS_Pr, ModeNo, rrti);
874 }
875
876 SiS_SetCRT1FIFO_310(SiS_Pr, ModeNo, ModeIdIndex);
877
878 SiS_SetCRT1ModeRegs(SiS_Pr, ModeNo, ModeIdIndex, rrti);
879
880 SiS_LoadDAC(SiS_Pr, ModeNo, ModeIdIndex);
881
882 SiS_DisplayOn(SiS_Pr);
883 }
884
885 /*********************************************/
886 /* SiSSetMode() */
887 /*********************************************/
888
SiSUSBSetMode(struct SiS_Private * SiS_Pr,unsigned short ModeNo)889 int SiSUSBSetMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
890 {
891 unsigned short ModeIdIndex;
892 unsigned long BaseAddr = SiS_Pr->IOAddress;
893
894 SiSUSB_InitPtr(SiS_Pr);
895 SiSUSBRegInit(SiS_Pr, BaseAddr);
896 SiS_GetSysFlags(SiS_Pr);
897
898 if (!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex)))
899 return 0;
900
901 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x05, 0x86);
902
903 SiSInitPCIetc(SiS_Pr);
904
905 ModeNo &= 0x7f;
906
907 SiS_Pr->SiS_ModeType =
908 SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag & ModeTypeMask;
909
910 SiS_Pr->SiS_SetFlag = LowModeTests;
911
912 /* Set mode on CRT1 */
913 SiS_SetCRT1Group(SiS_Pr, ModeNo, ModeIdIndex);
914
915 SiS_HandleCRT1(SiS_Pr);
916
917 SiS_DisplayOn(SiS_Pr);
918 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c6, 0xFF);
919
920 /* Store mode number */
921 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x34, ModeNo);
922
923 return 1;
924 }
925
SiSUSBSetVESAMode(struct SiS_Private * SiS_Pr,unsigned short VModeNo)926 int SiSUSBSetVESAMode(struct SiS_Private *SiS_Pr, unsigned short VModeNo)
927 {
928 unsigned short ModeNo = 0;
929 int i;
930
931 SiSUSB_InitPtr(SiS_Pr);
932
933 if (VModeNo == 0x03) {
934
935 ModeNo = 0x03;
936
937 } else {
938
939 i = 0;
940 do {
941
942 if (SiS_Pr->SiS_EModeIDTable[i].Ext_VESAID == VModeNo) {
943 ModeNo = SiS_Pr->SiS_EModeIDTable[i].Ext_ModeID;
944 break;
945 }
946
947 } while (SiS_Pr->SiS_EModeIDTable[i++].Ext_ModeID != 0xff);
948
949 }
950
951 if (!ModeNo)
952 return 0;
953
954 return SiSUSBSetMode(SiS_Pr, ModeNo);
955 }
956
