summaryrefslogtreecommitdiff
path: root/src/wsfb_driver.c
blob: df89c93a33ee72435928b78323abfd9d31f42bf7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
/* $OpenBSD: wsfb_driver.c,v 1.22 2010/07/18 20:10:12 matthieu Exp $ */
/*
 * Copyright (c) 2001 Matthieu Herrb
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *    - Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *    - Redistributions in binary form must reproduce the above
 *      copyright notice, this list of conditions and the following
 *      disclaimer in the documentation and/or other materials provided
 *      with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */

/*
 * Based on fbdev.c written by:
 *
 * Authors:  Alan Hourihane, <alanh@fairlite.demon.co.uk>
 *	     Michel Dänzer, <michdaen@iiic.ethz.ch>
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <dev/wscons/wsconsio.h>

/* All drivers need this. */
#include "xf86.h"
#include "xf86_OSproc.h"

#include "mipointer.h"
#include "mibstore.h"
#include "micmap.h"
#include "colormapst.h"
#include "xf86cmap.h"
#include "shadow.h"
#include "dgaproc.h"

/* For visuals */
#ifdef HAVE_XF1BPP
# include "xf1bpp.h"
#endif
#ifdef HAVE_XF4BPP
# include "xf4bpp.h"
#endif
#include "fb.h"

#if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) < 6
#include "xf86Resources.h"
#include "xf86RAC.h"
#endif

#ifdef XvExtension
#include "xf86xv.h"
#endif

#ifdef X_PRIVSEP
extern int priv_open_device(const char *);
#else
#define priv_open_device(n)    open(n,O_RDWR|O_NONBLOCK|O_EXCL)
#endif

#if defined(__NetBSD__)
#define WSFB_DEFAULT_DEV "/dev/ttyE0"
#else
#define WSFB_DEFAULT_DEV "/dev/ttyC0"
#endif

#define DEBUG 0

#if DEBUG
# define TRACE_ENTER(str)       ErrorF("wsfb: " str " %d\n",pScrn->scrnIndex)
# define TRACE_EXIT(str)        ErrorF("wsfb: " str " done\n")
# define TRACE(str)             ErrorF("wsfb trace: " str "\n")
#else
# define TRACE_ENTER(str)
# define TRACE_EXIT(str)
# define TRACE(str)
#endif

/* Prototypes */
static pointer WsfbSetup(pointer, pointer, int *, int *);
static Bool WsfbGetRec(ScrnInfoPtr);
static void WsfbFreeRec(ScrnInfoPtr);
static const OptionInfoRec * WsfbAvailableOptions(int, int);
static void WsfbIdentify(int);
static Bool WsfbProbe(DriverPtr, int);
static Bool WsfbPreInit(ScrnInfoPtr, int);
static Bool WsfbScreenInit(int, ScreenPtr, int, char **);
static Bool WsfbCloseScreen(int, ScreenPtr);
static void *WsfbWindowLinear(ScreenPtr, CARD32, CARD32, int, CARD32 *,
			      void *);
static void WsfbPointerMoved(int, int, int);
static Bool WsfbEnterVT(int, int);
static void WsfbLeaveVT(int, int);
static Bool WsfbSwitchMode(int, DisplayModePtr, int);
static int WsfbValidMode(int, DisplayModePtr, Bool, int);
static void WsfbLoadPalette(ScrnInfoPtr, int, int *, LOCO *, VisualPtr);
static Bool WsfbSaveScreen(ScreenPtr, int);
static void WsfbSave(ScrnInfoPtr);
static void WsfbRestore(ScrnInfoPtr);

/* DGA stuff */
#ifdef XFreeXDGA
static Bool WsfbDGAOpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
				   int *, int *, int *);
static Bool WsfbDGASetMode(ScrnInfoPtr, DGAModePtr);
static void WsfbDGASetViewport(ScrnInfoPtr, int, int, int);
static Bool WsfbDGAInit(ScrnInfoPtr, ScreenPtr);
#endif
static Bool WsfbDriverFunc(ScrnInfoPtr pScrn, xorgDriverFuncOp op,
				pointer ptr);

/* Helper functions */
static int wsfb_open(char *);
static pointer wsfb_mmap(size_t, off_t, int);

enum { WSFB_ROTATE_NONE = 0,
       WSFB_ROTATE_CCW = 90,
       WSFB_ROTATE_UD = 180,
       WSFB_ROTATE_CW = 270
};

/*
 * This is intentionally screen-independent. 
 * It indicates the binding choice made in the first PreInit.
 */
static int pix24bpp = 0;

#define WSFB_VERSION 		4000
#define WSFB_NAME		"wsfb"
#define WSFB_DRIVER_NAME	"wsfb"

_X_EXPORT DriverRec WSFB = {
	WSFB_VERSION,
	WSFB_DRIVER_NAME,
	WsfbIdentify,
	WsfbProbe,
	WsfbAvailableOptions,
	NULL,
	0,
	WsfbDriverFunc
};

/* Supported "chipsets" */
static SymTabRec WsfbChipsets[] = {
	{ 0, "wsfb" },
	{ -1, NULL }
};

/* Supported options */
typedef enum {
	OPTION_SHADOW_FB,
	OPTION_ROTATE
} WsfbOpts;

static const OptionInfoRec WsfbOptions[] = {
	{ OPTION_SHADOW_FB, "ShadowFB", OPTV_BOOLEAN, {0}, FALSE},
	{ OPTION_ROTATE, "Rotate", OPTV_STRING, {0}, FALSE},
	{ -1, NULL, OPTV_NONE, {0}, FALSE}
};

static XF86ModuleVersionInfo WsfbVersRec = {
	"wsfb",
	MODULEVENDORSTRING,
	MODINFOSTRING1,
	MODINFOSTRING2,
	XORG_VERSION_CURRENT,
	PACKAGE_VERSION_MAJOR, 
	PACKAGE_VERSION_MINOR, 
	PACKAGE_VERSION_PATCHLEVEL,
	ABI_CLASS_VIDEODRV,
	ABI_VIDEODRV_VERSION,
	NULL,
	{0, 0, 0, 0}
};

_X_EXPORT XF86ModuleData wsfbModuleData = { &WsfbVersRec, WsfbSetup, NULL };

static pointer
WsfbSetup(pointer module, pointer opts, int *errmaj, int *errmin)
{
	static Bool setupDone = FALSE;
	const char *osname;

	/* Check that we're being loaded on a OpenBSD or NetBSD system. */
	LoaderGetOS(&osname, NULL, NULL, NULL);
	if (!osname || (strcmp(osname, "openbsd") != 0 &&
	                strcmp(osname, "netbsd") != 0)) {
		if (errmaj)
			*errmaj = LDR_BADOS;
		if (errmin)
			*errmin = 0;
		return NULL;
	}
	if (!setupDone) {
		setupDone = TRUE;
		xf86AddDriver(&WSFB, module, HaveDriverFuncs);
		return (pointer)1;
	} else {
		if (errmaj != NULL)
			*errmaj = LDR_ONCEONLY;
		return NULL;
	}
}

/* Private data */
typedef struct {
	int			fd; /* File descriptor of open device. */
	struct wsdisplay_fbinfo info; /* Frame buffer characteristics. */
	int			linebytes; /* Number of bytes per row. */
	unsigned char*		fbstart;
	unsigned char*		fbmem;
	size_t			fbmem_len;
	int			rotate;
	Bool			shadowFB;
	void *			shadow;
	CloseScreenProcPtr	CloseScreen;
	CreateScreenResourcesProcPtr CreateScreenResources;
	void			(*PointerMoved)(int, int, int);
	EntityInfoPtr		pEnt;
	struct wsdisplay_cmap	saved_cmap;

#ifdef XFreeXDGA
	/* DGA info */
	DGAModePtr		pDGAMode;
	int			nDGAMode;
#endif
	OptionInfoPtr		Options;
} WsfbRec, *WsfbPtr;

#define WSFBPTR(p) ((WsfbPtr)((p)->driverPrivate))

static Bool
WsfbGetRec(ScrnInfoPtr pScrn)
{

	if (pScrn->driverPrivate != NULL)
		return TRUE;

	pScrn->driverPrivate = xnfcalloc(sizeof(WsfbRec), 1);
	return TRUE;
}

static void
WsfbFreeRec(ScrnInfoPtr pScrn)
{

	if (pScrn->driverPrivate == NULL)
		return;
	free(pScrn->driverPrivate);
	pScrn->driverPrivate = NULL;
}

static const OptionInfoRec *
WsfbAvailableOptions(int chipid, int busid)
{
	return WsfbOptions;
}

static void
WsfbIdentify(int flags)
{
	xf86PrintChipsets(WSFB_NAME, "driver for wsdisplay framebuffer",
			  WsfbChipsets);
}

/* Open the framebuffer device. */
static int
wsfb_open(char *dev)
{
	int fd = -1;

	/* Try argument from xorg.conf first. */
	if (dev == NULL || ((fd = priv_open_device(dev)) == -1)) {
		/* Second: environment variable. */
		dev = getenv("XDEVICE");
		if (dev == NULL || ((fd = priv_open_device(dev)) == -1)) {
			/* Last try: default device. */
			dev = WSFB_DEFAULT_DEV;
			if ((fd = priv_open_device(dev)) == -1) {
				return -1;
			}
		}
	}
	return fd;
}

/* Map the framebuffer's memory. */
static pointer
wsfb_mmap(size_t len, off_t off, int fd)
{
	int pagemask, mapsize;
	caddr_t addr;
	pointer mapaddr;

	pagemask = getpagesize() - 1;
	mapsize = ((int) len + pagemask) & ~pagemask;
	addr = 0;

	/*
	 * Try and make it private first, that way once we get it, an
	 * interloper, e.g. another server, can't get this frame buffer,
	 * and if another server already has it, this one won't.
	 */
	mapaddr = (pointer) mmap(addr, mapsize,
				 PROT_READ | PROT_WRITE, MAP_SHARED,
				 fd, off);
	if (mapaddr == (pointer) -1) {
		mapaddr = NULL;
	}
#if DEBUG
	ErrorF("mmap returns: addr %p len 0x%x\n", mapaddr, mapsize);
#endif
	return mapaddr;
}

static Bool
WsfbProbe(DriverPtr drv, int flags)
{
	int i, fd, entity;
       	GDevPtr *devSections;
	int numDevSections;
	char *dev;
	Bool foundScreen = FALSE;

	TRACE("probe start");

	/* For now, just bail out for PROBE_DETECT. */
	if (flags & PROBE_DETECT)
		return FALSE;

	if ((numDevSections = xf86MatchDevice(WSFB_DRIVER_NAME,
					      &devSections)) <= 0)
		return FALSE;

	for (i = 0; i < numDevSections; i++) {
		ScrnInfoPtr pScrn = NULL;

		dev = xf86FindOptionValue(devSections[i]->options, "device");
		if ((fd = wsfb_open(dev)) >= 0) {
			entity = xf86ClaimFbSlot(drv, 0, devSections[i], TRUE);
			pScrn = xf86ConfigFbEntity(NULL,0,entity,
						   NULL,NULL,NULL,NULL);
			if (pScrn != NULL) {
				foundScreen = TRUE;
				pScrn->driverVersion = WSFB_VERSION;
				pScrn->driverName = WSFB_DRIVER_NAME;
				pScrn->name = WSFB_NAME;
				pScrn->Probe = WsfbProbe;
				pScrn->PreInit = WsfbPreInit;
				pScrn->ScreenInit = WsfbScreenInit;
				pScrn->SwitchMode = WsfbSwitchMode;
				pScrn->AdjustFrame = NULL;
				pScrn->EnterVT = WsfbEnterVT;
				pScrn->LeaveVT = WsfbLeaveVT;
				pScrn->ValidMode = WsfbValidMode;

				xf86DrvMsg(pScrn->scrnIndex, X_INFO,
				    "using %s\n", dev != NULL ? dev :
				    "default device");
			}
		}
	}
	free(devSections);
	TRACE("probe done");
	return foundScreen;
}

static Bool
WsfbPreInit(ScrnInfoPtr pScrn, int flags)
{
	WsfbPtr fPtr;
	int default_depth, wstype;
	char *dev, *s;
	char *mod = NULL;
	const char *reqSym = NULL;
	Gamma zeros = {0.0, 0.0, 0.0};
	DisplayModePtr mode;

	if (flags & PROBE_DETECT) return FALSE;

	TRACE_ENTER("PreInit");

	if (pScrn->numEntities != 1) return FALSE;

	pScrn->monitor = pScrn->confScreen->monitor;

	WsfbGetRec(pScrn);
	fPtr = WSFBPTR(pScrn);

	fPtr->pEnt = xf86GetEntityInfo(pScrn->entityList[0]);

#if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) < 6
	pScrn->racMemFlags = RAC_FB | RAC_COLORMAP | RAC_CURSOR | RAC_VIEWPORT;
	pScrn->racIoFlags = pScrn->racMemFlags;
#endif

	dev = xf86FindOptionValue(fPtr->pEnt->device->options, "device");
	fPtr->fd = wsfb_open(dev);
	if (fPtr->fd == -1) {
		return FALSE;
	}

	if (ioctl(fPtr->fd, WSDISPLAYIO_GINFO, &fPtr->info) == -1) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			   "ioctl WSDISPLAY_GINFO: %s\n",
			   strerror(errno));
		return FALSE;
	}
	if (ioctl(fPtr->fd, WSDISPLAYIO_GTYPE, &wstype) == -1) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			   "ioctl WSDISPLAY_GTYPE: %s\n",
			   strerror(errno));
		return FALSE;
	}
	if (ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES, &fPtr->linebytes) == -1) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			   "ioctl WSDISPLAYIO_LINEBYTES: %s\n",
			   strerror(errno));
		return FALSE;
	}
	/*
	 * Allocate room for saving the colormap.
	 */
	if (fPtr->info.cmsize != 0) {
		fPtr->saved_cmap.red =
		    (unsigned char *)malloc(fPtr->info.cmsize);
		if (fPtr->saved_cmap.red == NULL) {
			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			    "Cannot malloc %d bytes\n", fPtr->info.cmsize);
			return FALSE;
		}
		fPtr->saved_cmap.green =
		    (unsigned char *)malloc(fPtr->info.cmsize);
		if (fPtr->saved_cmap.green == NULL) {
			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			    "Cannot malloc %d bytes\n", fPtr->info.cmsize);
			free(fPtr->saved_cmap.red);
			return FALSE;
		}
		fPtr->saved_cmap.blue =
		    (unsigned char *)malloc(fPtr->info.cmsize);
		if (fPtr->saved_cmap.blue == NULL) {
			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			    "Cannot malloc %d bytes\n", fPtr->info.cmsize);
			free(fPtr->saved_cmap.red);
			free(fPtr->saved_cmap.green);
			return FALSE;
		}
	}

	/* Handle depth */
	default_depth = fPtr->info.depth <= 24 ? fPtr->info.depth : 24;
	if (!xf86SetDepthBpp(pScrn, default_depth, default_depth,
		fPtr->info.depth,
		fPtr->info.depth >= 24 ? Support24bppFb|Support32bppFb : 0))
		return FALSE;

	/* Check consistency. */
	if (pScrn->bitsPerPixel != fPtr->info.depth) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
		    "specified depth (%d) or bpp (%d) doesn't match "
		    "framebuffer depth (%d)\n", pScrn->depth, 
		    pScrn->bitsPerPixel, fPtr->info.depth);
		return FALSE;
	}
	xf86PrintDepthBpp(pScrn);

	/* Get the depth24 pixmap format. */
	if (pScrn->depth == 24 && pix24bpp == 0)
		pix24bpp = xf86GetBppFromDepth(pScrn, 24);

	/* Color weight */
	if (pScrn->depth > 8) {
		rgb zeros = { 0, 0, 0 }, masks;

		if (wstype == WSDISPLAY_TYPE_SUN24 ||
		    wstype == WSDISPLAY_TYPE_SUNCG12 ||
		    wstype == WSDISPLAY_TYPE_SUNCG14 ||
		    wstype == WSDISPLAY_TYPE_SUNTCX ||
		    wstype == WSDISPLAY_TYPE_SUNFFB) {
			masks.red = 0x0000ff;
			masks.green = 0x00ff00;
			masks.blue = 0xff0000;
		} else {
			masks.red = 0;
			masks.green = 0;
			masks.blue = 0;
		}

		if (!xf86SetWeight(pScrn, zeros, masks))
			return FALSE;
	}

	/* Visual init */
	if (!xf86SetDefaultVisual(pScrn, -1))
		return FALSE;

	/* We don't currently support DirectColor at > 8bpp . */
	if (pScrn->depth > 8 && pScrn->defaultVisual != TrueColor) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Given default visual"
			   " (%s) is not supported at depth %d\n",
			   xf86GetVisualName(pScrn->defaultVisual),
			   pScrn->depth);
		return FALSE;
	}

	xf86SetGamma(pScrn,zeros);

	pScrn->progClock = TRUE;
	pScrn->rgbBits   = 8;
	pScrn->chipset   = "wsfb";
	pScrn->videoRam  = fPtr->linebytes * fPtr->info.height;

	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Vidmem: %dk\n",
		   pScrn->videoRam/1024);

	/* Handle options. */
	xf86CollectOptions(pScrn, NULL);
	fPtr->Options = (OptionInfoRec *)malloc(sizeof(WsfbOptions));
	if (fPtr->Options == NULL)
		return FALSE;
	memcpy(fPtr->Options, WsfbOptions, sizeof(WsfbOptions));
	xf86ProcessOptions(pScrn->scrnIndex, fPtr->pEnt->device->options,
			   fPtr->Options);

	/* Use shadow framebuffer by default, on depth >= 8 */
	if (pScrn->depth >= 8)
		fPtr->shadowFB = xf86ReturnOptValBool(fPtr->Options,
						      OPTION_SHADOW_FB, TRUE);
	else
		if (xf86ReturnOptValBool(fPtr->Options,
					 OPTION_SHADOW_FB, FALSE)) {
			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
				   "Shadow FB option ignored on depth < 8");
		}

	/* Rotation */
	fPtr->rotate = WSFB_ROTATE_NONE;
	if ((s = xf86GetOptValString(fPtr->Options, OPTION_ROTATE))) {
		if (pScrn->depth >= 8) {
			if (!xf86NameCmp(s, "CW")) {
				fPtr->shadowFB = TRUE;
				fPtr->rotate = WSFB_ROTATE_CW;
				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
				    "Rotating screen clockwise\n");
			} else if (!xf86NameCmp(s, "CCW")) {
				fPtr->shadowFB = TRUE;
				fPtr->rotate = WSFB_ROTATE_CCW;
				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
				    "Rotating screen counter clockwise\n");
			} else if (!xf86NameCmp(s, "UD")) {
				fPtr->shadowFB = TRUE;
				fPtr->rotate = WSFB_ROTATE_UD;
				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
				    "Rotating screen upside down\n");
			} else {
				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
				    "\"%s\" is not a valid value for Option "
				    "\"Rotate\"\n", s);
				xf86DrvMsg(pScrn->scrnIndex, X_INFO,
				    "Valid options are \"CW\", \"CCW\","
				    " or \"UD\"\n");
			}
		} else {
			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
			    "Option \"Rotate\" ignored on depth < 8");
		}
	}
	
	/* Fake video mode struct. */
	mode = (DisplayModePtr)malloc(sizeof(DisplayModeRec));
	mode->prev = mode;
	mode->next = mode;
	mode->name = "wsfb current mode";
	mode->status = MODE_OK;
	mode->type = M_T_BUILTIN;
	mode->Clock = 0;
	mode->HDisplay = fPtr->info.width;
	mode->HSyncStart = 0;
	mode->HSyncEnd = 0;
	mode->HTotal = 0;
	mode->HSkew = 0;
	mode->VDisplay = fPtr->info.height;
	mode->VSyncStart = 0;
	mode->VSyncEnd = 0;
	mode->VTotal = 0;
	mode->VScan = 0;
	mode->Flags = 0;
	if (pScrn->modes != NULL) {
		xf86DrvMsg(pScrn->scrnIndex, X_INFO,
		   "Ignoring mode specification from screen section\n");
	}
	pScrn->currentMode = pScrn->modes = mode;
	pScrn->virtualX = fPtr->info.width;
	pScrn->virtualY = fPtr->info.height;
	pScrn->displayWidth = pScrn->virtualX;

	/* Set the display resolution. */
	xf86SetDpi(pScrn, 0, 0);

	/* Load bpp-specific modules. */
	switch(pScrn->bitsPerPixel) {
#ifdef HAVE_XF1BPP
	case 1:
		mod = "xf1bpp";
		reqSym = "xf1bppScreenInit";
		break;
#endif
#ifdef HAVE_XF4BPP
	case 4:
		mod = "xf4bpp";
		reqSym = "xf4bppScreenInit";
		break;
#endif
	default:
		mod = "fb";
		break;
	}


	/* Load shadow if needed. */
	if (fPtr->shadowFB) {
		xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
			   "Using \"Shadow Framebuffer\"\n");
		if (xf86LoadSubModule(pScrn, "shadow") == NULL) {
			WsfbFreeRec(pScrn);
			return FALSE;
		}
	}
	if (mod && xf86LoadSubModule(pScrn, mod) == NULL) {
		WsfbFreeRec(pScrn);
		return FALSE;
	}
	TRACE_EXIT("PreInit");
	return TRUE;
}

static Bool
WsfbCreateScreenResources(ScreenPtr pScreen)
{
	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
	WsfbPtr fPtr = WSFBPTR(pScrn);
	PixmapPtr pPixmap;
	Bool ret;

	pScreen->CreateScreenResources = fPtr->CreateScreenResources;
	ret = pScreen->CreateScreenResources(pScreen);
	pScreen->CreateScreenResources = WsfbCreateScreenResources;

	if (!ret)
		return FALSE;

	pPixmap = pScreen->GetScreenPixmap(pScreen);

	if (!shadowAdd(pScreen, pPixmap, fPtr->rotate ?
		shadowUpdateRotatePackedWeak() : shadowUpdatePackedWeak(),
		WsfbWindowLinear, fPtr->rotate, NULL)) {
		return FALSE;
	}
	return TRUE;
}


static Bool
WsfbShadowInit(ScreenPtr pScreen)
{
	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
	WsfbPtr fPtr = WSFBPTR(pScrn);

	if (!shadowSetup(pScreen))
		return FALSE;
	fPtr->CreateScreenResources = pScreen->CreateScreenResources;
	pScreen->CreateScreenResources = WsfbCreateScreenResources;

	return TRUE;
}

static Bool
WsfbScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
{
	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
	WsfbPtr fPtr = WSFBPTR(pScrn);
	VisualPtr visual;
	int ret, flags, ncolors;
	int wsmode = WSDISPLAYIO_MODE_DUMBFB;
	size_t len;

	TRACE_ENTER("WsfbScreenInit");
#if DEBUG
	ErrorF("\tbitsPerPixel=%d, depth=%d, defaultVisual=%s\n"
	       "\tmask: %x,%x,%x, offset: %u,%u,%u\n",
	       pScrn->bitsPerPixel,
	       pScrn->depth,
	       xf86GetVisualName(pScrn->defaultVisual),
	       pScrn->mask.red,pScrn->mask.green,pScrn->mask.blue,
	       pScrn->offset.red,pScrn->offset.green,pScrn->offset.blue);
#endif
	switch (fPtr->info.depth) {
	case 1:
	case 4:
	case 8:
		len = fPtr->linebytes*fPtr->info.height;
		break;
	case 16:
		if (fPtr->linebytes == fPtr->info.width) {
			len = fPtr->info.width*fPtr->info.height*sizeof(short);
		} else {
			len = fPtr->linebytes*fPtr->info.height;
		}
		break;
	case 24:
		if (fPtr->linebytes == fPtr->info.width) {
			len = fPtr->info.width*fPtr->info.height*3;
		} else {
			len = fPtr->linebytes*fPtr->info.height;
		}
		break;
	case 32:
		if (fPtr->linebytes == fPtr->info.width) {
			len = fPtr->info.width*fPtr->info.height*sizeof(int);
		} else {
			len = fPtr->linebytes*fPtr->info.height;
		}
		break;
	default:
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			   "unsupported depth %d\n", fPtr->info.depth);
		return FALSE;
	}
	/* Switch to graphics mode - required before mmap. */
	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &wsmode) == -1) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			   "ioctl WSDISPLAYIO_SMODE: %s\n",
			   strerror(errno));
		return FALSE;
	}
	fPtr->fbmem = wsfb_mmap(len, 0, fPtr->fd);

	if (fPtr->fbmem == NULL) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			   "wsfb_mmap: %s\n", strerror(errno));
		return FALSE;
	}
	fPtr->fbmem_len = len;

	WsfbSave(pScrn);
	pScrn->vtSema = TRUE;

	/* MI layer */
	miClearVisualTypes();
	if (pScrn->bitsPerPixel > 8) {
		if (!miSetVisualTypes(pScrn->depth, TrueColorMask,
				      pScrn->rgbBits, TrueColor))
			return FALSE;
	} else {
		if (!miSetVisualTypes(pScrn->depth,
				      miGetDefaultVisualMask(pScrn->depth),
				      pScrn->rgbBits, pScrn->defaultVisual))
			return FALSE;
	}
	if (!miSetPixmapDepths())
		return FALSE;

	if (fPtr->rotate == WSFB_ROTATE_CW 
	    || fPtr->rotate == WSFB_ROTATE_CCW) {
		int tmp = pScrn->virtualX;
		pScrn->virtualX = pScrn->displayWidth = pScrn->virtualY;
		pScrn->virtualY = tmp;
	}
	if (fPtr->rotate && !fPtr->PointerMoved) {
		fPtr->PointerMoved = pScrn->PointerMoved;
		pScrn->PointerMoved = WsfbPointerMoved;
	}

	fPtr->fbstart = fPtr->fbmem;

	if (fPtr->shadowFB) {
		fPtr->shadow = calloc(1, pScrn->virtualX * pScrn->virtualY *
		    pScrn->bitsPerPixel/8);
		
		if (!fPtr->shadow) {
			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			    "Failed to allocate shadow framebuffer\n");
			return FALSE;
		}
	}

	switch (pScrn->bitsPerPixel) {
	case 1:
#ifdef HAVE_XF1BPP
		ret = xf1bppScreenInit(pScreen, fPtr->fbstart,
				       pScrn->virtualX, pScrn->virtualY,
				       pScrn->xDpi, pScrn->yDpi,
				       fPtr->linebytes * 8);
		break;
#endif
	case 4:
#ifdef HAVE_XF4BPP
		ret = xf4bppScreenInit(pScreen, fPtr->fbstart,
				       pScrn->virtualX, pScrn->virtualY,
				       pScrn->xDpi, pScrn->yDpi,
				       fPtr->linebytes * 2);
		break;
#endif
	case 8:
	case 16:
	case 24:
	case 32:
		ret = fbScreenInit(pScreen,
		    fPtr->shadowFB ? fPtr->shadow : fPtr->fbstart,
		    pScrn->virtualX, pScrn->virtualY,
		    pScrn->xDpi, pScrn->yDpi,
		    pScrn->displayWidth, pScrn->bitsPerPixel);
		break;
	default:
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			   "Unsupported bpp: %d", pScrn->bitsPerPixel);
		return FALSE;
	} /* case */

	if (!ret)
		return FALSE;

	if (pScrn->bitsPerPixel > 8) {
		/* Fixup RGB ordering. */
		visual = pScreen->visuals + pScreen->numVisuals;
		while (--visual >= pScreen->visuals) {
			if ((visual->class | DynamicClass) == DirectColor) {
				visual->offsetRed   = pScrn->offset.red;
				visual->offsetGreen = pScrn->offset.green;
				visual->offsetBlue  = pScrn->offset.blue;
				visual->redMask     = pScrn->mask.red;
				visual->greenMask   = pScrn->mask.green;
				visual->blueMask    = pScrn->mask.blue;
			}
		}
	}

	if (pScrn->bitsPerPixel >= 8) {
		if (!fbPictureInit(pScreen, NULL, 0))
			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
				   "RENDER extension initialisation failed.");
	}
	if (fPtr->shadowFB && !WsfbShadowInit(pScreen)) {
		xf86DrvMsg(scrnIndex, X_ERROR,
		    "shadow framebuffer initialization failed\n");
		return FALSE;
	}

#ifdef XFreeXDGA
	if (!fPtr->rotate) 
		WsfbDGAInit(pScrn, pScreen);
	else 
		xf86DrvMsg(scrnIndex, X_INFO, "Rotated display, "
		    "disabling DGA\n");
#endif
	if (fPtr->rotate) {
		xf86DrvMsg(scrnIndex, X_INFO, "Enabling Driver Rotation, "
		    "disabling RandR\n");
		xf86DisableRandR();
		if (pScrn->bitsPerPixel == 24) 
			xf86DrvMsg(scrnIndex, X_WARNING, 
			    "Rotation might be broken in 24 bpp\n");
	}

	xf86SetBlackWhitePixels(pScreen);
	miInitializeBackingStore(pScreen);
	xf86SetBackingStore(pScreen);

	/* Software cursor. */
	miDCInitialize(pScreen, xf86GetPointerScreenFuncs());

	/*
	 * Colormap
	 *
	 * Note that, even on less than 8 bit depth frame buffers, we
	 * expect the colormap to be programmable with 8 bit values.
	 * As of now, this is indeed the case on all OpenBSD supported
	 * graphics hardware.
	 */
	if (!miCreateDefColormap(pScreen))
		return FALSE;
	flags = CMAP_RELOAD_ON_MODE_SWITCH;
	ncolors = fPtr->info.cmsize;
	/* On StaticGray visuals, fake a 256 entries colormap. */
	if (ncolors == 0)
		ncolors = 256;
	if(!xf86HandleColormaps(pScreen, ncolors, 8, WsfbLoadPalette,
				NULL, flags))
		return FALSE;

	pScreen->SaveScreen = WsfbSaveScreen;

#ifdef XvExtension
	{
		XF86VideoAdaptorPtr *ptr;

		int n = xf86XVListGenericAdaptors(pScrn,&ptr);
		if (n) {
			xf86XVScreenInit(pScreen,ptr,n);
		}
	}
#endif

	/* Wrap the current CloseScreen function. */
	fPtr->CloseScreen = pScreen->CloseScreen;
	pScreen->CloseScreen = WsfbCloseScreen;

	TRACE_EXIT("WsfbScreenInit");
	return TRUE;
}

static Bool
WsfbCloseScreen(int scrnIndex, ScreenPtr pScreen)
{
	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
	PixmapPtr pPixmap;
	WsfbPtr fPtr = WSFBPTR(pScrn);


	TRACE_ENTER("WsfbCloseScreen");

	pPixmap = pScreen->GetScreenPixmap(pScreen);
	if (fPtr->shadowFB) 
		shadowRemove(pScreen, pPixmap);

	if (pScrn->vtSema) {
		WsfbRestore(pScrn);
		if (munmap(fPtr->fbmem, fPtr->fbmem_len) == -1) {
			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
				   "munmap: %s\n", strerror(errno));
		}

		fPtr->fbmem = NULL;
	}
#ifdef XFreeXDGA
	if (fPtr->pDGAMode) {
		free(fPtr->pDGAMode);
		fPtr->pDGAMode = NULL;
		fPtr->nDGAMode = 0;
	}
#endif
	pScrn->vtSema = FALSE;

	/* Unwrap CloseScreen. */
	pScreen->CloseScreen = fPtr->CloseScreen;
	TRACE_EXIT("WsfbCloseScreen");
	return (*pScreen->CloseScreen)(scrnIndex, pScreen);
}

static void *
WsfbWindowLinear(ScreenPtr pScreen, CARD32 row, CARD32 offset, int mode,
		CARD32 *size, void *closure)
{
	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
	WsfbPtr fPtr = WSFBPTR(pScrn);

	if (fPtr->linebytes)
		*size = fPtr->linebytes;
	else {
		if (ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES, size) == -1)
			return NULL;
		fPtr->linebytes = *size;
	}
	return ((CARD8 *)fPtr->fbmem + row *fPtr->linebytes + offset);
}

static void
WsfbPointerMoved(int index, int x, int y)
{
    ScrnInfoPtr pScrn = xf86Screens[index];
    WsfbPtr fPtr = WSFBPTR(pScrn);
    int newX, newY;

    switch (fPtr->rotate)
    {
    case WSFB_ROTATE_CW:
	/* 90 degrees CW rotation. */
	newX = pScrn->pScreen->height - y - 1;
	newY = x;
	break;

    case WSFB_ROTATE_CCW:
	/* 90 degrees CCW rotation. */
	newX = y;
	newY = pScrn->pScreen->width - x - 1;
	break;

    case WSFB_ROTATE_UD:
	/* 180 degrees UD rotation. */
	newX = pScrn->pScreen->width - x - 1;
	newY = pScrn->pScreen->height - y - 1;
	break;

    default:
	/* No rotation. */
	newX = x;
	newY = y;
	break;
    }

    /* Pass adjusted pointer coordinates to wrapped PointerMoved function. */
    (*fPtr->PointerMoved)(index, newX, newY);
}

static Bool
WsfbEnterVT(int scrnIndex, int flags)
{
	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];

	TRACE_ENTER("EnterVT");
	pScrn->vtSema = TRUE;
	TRACE_EXIT("EnterVT");
	return TRUE;
}

static void
WsfbLeaveVT(int scrnIndex, int flags)
{
#if DEBUG
	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
#endif

	TRACE_ENTER("LeaveVT");
}

static Bool
WsfbSwitchMode(int scrnIndex, DisplayModePtr mode, int flags)
{
#if DEBUG
	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
#endif

	TRACE_ENTER("SwitchMode");
	/* Nothing else to do. */
	return TRUE;
}

static int
WsfbValidMode(int scrnIndex, DisplayModePtr mode, Bool verbose, int flags)
{
#if DEBUG
	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
#endif

	TRACE_ENTER("ValidMode");
	return MODE_OK;
}

static void
WsfbLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices,
	       LOCO *colors, VisualPtr pVisual)
{
	WsfbPtr fPtr = WSFBPTR(pScrn);
	struct wsdisplay_cmap cmap;
	unsigned char red[256],green[256],blue[256];
	int i, indexMin=256, indexMax=0;

	TRACE_ENTER("LoadPalette");

	cmap.count   = 1;
	cmap.red   = red;
	cmap.green = green;
	cmap.blue  = blue;

	if (numColors == 1) {
		/* Optimisation */
		cmap.index = indices[0];
		red[0]   = colors[indices[0]].red;
		green[0] = colors[indices[0]].green;
		blue[0]  = colors[indices[0]].blue;
		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
	} else {
		/*
		 * Change all colors in 2 ioctls
		 * and limit the data to be transfered.
		 */
		for (i = 0; i < numColors; i++) {
			if (indices[i] < indexMin)
				indexMin = indices[i];
			if (indices[i] > indexMax)
				indexMax = indices[i];
		}
		cmap.index = indexMin;
		cmap.count = indexMax - indexMin + 1;
		cmap.red = &red[indexMin];
		cmap.green = &green[indexMin];
		cmap.blue = &blue[indexMin];
		/* Get current map. */
		if (ioctl(fPtr->fd, WSDISPLAYIO_GETCMAP, &cmap) == -1)
			ErrorF("ioctl FBIOGETCMAP: %s\n", strerror(errno));
		/* Change the colors that require updating. */
		for (i = 0; i < numColors; i++) {
			red[indices[i]]   = colors[indices[i]].red;
			green[indices[i]] = colors[indices[i]].green;
			blue[indices[i]]  = colors[indices[i]].blue;
		}
		/* Write the colormap back. */
		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
	}
	TRACE_EXIT("LoadPalette");
}

static Bool
WsfbSaveScreen(ScreenPtr pScreen, int mode)
{
	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
	WsfbPtr fPtr = WSFBPTR(pScrn);
	int state;

	TRACE_ENTER("SaveScreen");

	if (!pScrn->vtSema)
		return TRUE;

	if (mode != SCREEN_SAVER_FORCER) {
		state = xf86IsUnblank(mode)?WSDISPLAYIO_VIDEO_ON:
		                            WSDISPLAYIO_VIDEO_OFF;
		ioctl(fPtr->fd,
		      WSDISPLAYIO_SVIDEO, &state);
	}
	TRACE_EXIT("SaveScreen");
	return TRUE;
}


static void
WsfbSave(ScrnInfoPtr pScrn)
{
	WsfbPtr fPtr = WSFBPTR(pScrn);

	TRACE_ENTER("WsfbSave");

	if (fPtr->info.cmsize == 0)
		return;

	fPtr->saved_cmap.index = 0;
	fPtr->saved_cmap.count = fPtr->info.cmsize;
	if (ioctl(fPtr->fd, WSDISPLAYIO_GETCMAP,
		  &(fPtr->saved_cmap)) == -1) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			   "error saving colormap %s\n", strerror(errno));
	}
	TRACE_EXIT("WsfbSave");

}

static void
WsfbRestore(ScrnInfoPtr pScrn)
{
	WsfbPtr fPtr = WSFBPTR(pScrn);
	int mode;

	TRACE_ENTER("WsfbRestore");

	if (fPtr->info.cmsize != 0) {
		/* reset colormap for text mode */
		if (ioctl(fPtr->fd, WSDISPLAYIO_PUTCMAP,
			  &(fPtr->saved_cmap)) == -1) {
			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
				   "error restoring colormap %s\n",
				   strerror(errno));
		}
	}

	/* Clear the screen. */
	memset(fPtr->fbmem, 0, fPtr->fbmem_len);

	/* Restore the text mode. */
	mode = WSDISPLAYIO_MODE_EMUL;
	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &mode) == -1) {
		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
			   "error setting text mode %s\n", strerror(errno));
	}
	TRACE_EXIT("WsfbRestore");
}

#ifdef XFreeXDGA
/***********************************************************************
 * DGA stuff
 ***********************************************************************/

static Bool
WsfbDGAOpenFramebuffer(ScrnInfoPtr pScrn, char **DeviceName,
		       unsigned char **ApertureBase, int *ApertureSize,
		       int *ApertureOffset, int *flags)
{
	*DeviceName = NULL;		/* No special device */
	*ApertureBase = (unsigned char *)(pScrn->memPhysBase);
	*ApertureSize = pScrn->videoRam;
	*ApertureOffset = pScrn->fbOffset;
	*flags = 0;

	return TRUE;
}

static Bool
WsfbDGASetMode(ScrnInfoPtr pScrn, DGAModePtr pDGAMode)
{
	DisplayModePtr pMode;
	int scrnIdx = pScrn->pScreen->myNum;
	int frameX0, frameY0;

	if (pDGAMode) {
		pMode = pDGAMode->mode;
		frameX0 = frameY0 = 0;
	} else {
		if (!(pMode = pScrn->currentMode))
			return TRUE;

		frameX0 = pScrn->frameX0;
		frameY0 = pScrn->frameY0;
	}

	if (!(*pScrn->SwitchMode)(scrnIdx, pMode, 0))
		return FALSE;
	(*pScrn->AdjustFrame)(scrnIdx, frameX0, frameY0, 0);

	return TRUE;
}

static void
WsfbDGASetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
{
	(*pScrn->AdjustFrame)(pScrn->pScreen->myNum, x, y, flags);
}

static int
WsfbDGAGetViewport(ScrnInfoPtr pScrn)
{
	return (0);
}

static DGAFunctionRec WsfbDGAFunctions =
{
	WsfbDGAOpenFramebuffer,
	NULL,       /* CloseFramebuffer */
	WsfbDGASetMode,
	WsfbDGASetViewport,
	WsfbDGAGetViewport,
	NULL,       /* Sync */
	NULL,       /* FillRect */
	NULL,       /* BlitRect */
	NULL,       /* BlitTransRect */
};

static void
WsfbDGAAddModes(ScrnInfoPtr pScrn)
{
	WsfbPtr fPtr = WSFBPTR(pScrn);
	DisplayModePtr pMode = pScrn->modes;
	DGAModePtr pDGAMode;

	do {
		pDGAMode = realloc(fPtr->pDGAMode,
				    (fPtr->nDGAMode + 1) * sizeof(DGAModeRec));
		if (!pDGAMode)
			break;

		fPtr->pDGAMode = pDGAMode;
		pDGAMode += fPtr->nDGAMode;
		(void)memset(pDGAMode, 0, sizeof(DGAModeRec));

		++fPtr->nDGAMode;
		pDGAMode->mode = pMode;
		pDGAMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
		pDGAMode->byteOrder = pScrn->imageByteOrder;
		pDGAMode->depth = pScrn->depth;
		pDGAMode->bitsPerPixel = pScrn->bitsPerPixel;
		pDGAMode->red_mask = pScrn->mask.red;
		pDGAMode->green_mask = pScrn->mask.green;
		pDGAMode->blue_mask = pScrn->mask.blue;
		pDGAMode->visualClass = pScrn->bitsPerPixel > 8 ?
			TrueColor : PseudoColor;
		pDGAMode->xViewportStep = 1;
		pDGAMode->yViewportStep = 1;
		pDGAMode->viewportWidth = pMode->HDisplay;
		pDGAMode->viewportHeight = pMode->VDisplay;

		if (fPtr->linebytes)
			pDGAMode->bytesPerScanline = fPtr->linebytes;
		else {
			ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES,
			      &fPtr->linebytes);
			pDGAMode->bytesPerScanline = fPtr->linebytes;
		}

		pDGAMode->imageWidth = pMode->HDisplay;
		pDGAMode->imageHeight =  pMode->VDisplay;
		pDGAMode->pixmapWidth = pDGAMode->imageWidth;
		pDGAMode->pixmapHeight = pDGAMode->imageHeight;
		pDGAMode->maxViewportX = pScrn->virtualX -
			pDGAMode->viewportWidth;
		pDGAMode->maxViewportY = pScrn->virtualY -
			pDGAMode->viewportHeight;

		pDGAMode->address = fPtr->fbstart;

		pMode = pMode->next;
	} while (pMode != pScrn->modes);
}

static Bool
WsfbDGAInit(ScrnInfoPtr pScrn, ScreenPtr pScreen)
{
	WsfbPtr fPtr = WSFBPTR(pScrn);

	if (pScrn->depth < 8)
		return FALSE;

	if (!fPtr->nDGAMode)
		WsfbDGAAddModes(pScrn);

	return (DGAInit(pScreen, &WsfbDGAFunctions,
			fPtr->pDGAMode, fPtr->nDGAMode));
}
#endif

static Bool
WsfbDriverFunc(ScrnInfoPtr pScrn, xorgDriverFuncOp op,
    pointer ptr)
{
	xorgHWFlags *flag;
	
	switch (op) {
	case GET_REQUIRED_HW_INTERFACES:
		flag = (CARD32*)ptr;
		(*flag) = 0;
		return TRUE;
	default:
		return FALSE;
	}
}