wsfb_driver.c revision 4a5ed537 
1/* $OpenBSD: wsfb_driver.c,v 1.16 2009/09/13 19:33:49 matthieu Exp $ */
2/*
3 * Copyright (c) 2001 Matthieu Herrb
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 *    - Redistributions of source code must retain the above copyright
11 *      notice, this list of conditions and the following disclaimer.
12 *    - Redistributions in binary form must reproduce the above
13 *      copyright notice, this list of conditions and the following
14 *      disclaimer in the documentation and/or other materials provided
15 *      with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
21 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
27 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 *
30 */
31
32/*
33 * Based on fbdev.c written by:
34 *
35 * Authors:  Alan Hourihane, <alanh@fairlite.demon.co.uk>
36 *	     Michel Dänzer, <michdaen@iiic.ethz.ch>
37 */
38
39#ifdef HAVE_CONFIG_H
40#include "config.h"
41#endif
42
43#include <errno.h>
44#include <fcntl.h>
45#include <sys/types.h>
46#include <sys/mman.h>
47#include <sys/time.h>
48#include <errno.h>
49#include <dev/wscons/wsconsio.h>
50
51/* All drivers need this. */
52#include "xf86.h"
53#include "xf86_OSproc.h"
54
55#include "mipointer.h"
56#include "mibstore.h"
57#include "micmap.h"
58#include "colormapst.h"
59#include "xf86cmap.h"
60#include "shadow.h"
61#include "dgaproc.h"
62
63/* For visuals */
64#ifdef HAVE_XF1BPP
65# include "xf1bpp.h"
66#endif
67#ifdef HAVE_XF4BPP
68# include "xf4bpp.h"
69#endif
70#include "fb.h"
71
72#if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) < 6
73#include "xf86Resources.h"
74#include "xf86RAC.h"
75#endif
76
77#ifdef XvExtension
78#include "xf86xv.h"
79#endif
80
81#include "wsfb.h"
82
83/* #include "wsconsio.h" */
84
85#include <sys/mman.h>
86
87#ifdef X_PRIVSEP
88extern int priv_open_device(const char *);
89#else
90#define priv_open_device(n)    open(n,O_RDWR|O_NONBLOCK|O_EXCL)
91#endif
92
93#if defined(__NetBSD__)
94#define WSFB_DEFAULT_DEV "/dev/ttyE0"
95#else
96#define WSFB_DEFAULT_DEV "/dev/ttyC0"
97#endif
98
99#define DEBUG 0
100
101#if DEBUG
102# define TRACE_ENTER(str)       ErrorF("wsfb: " str " %d\n",pScrn->scrnIndex)
103# define TRACE_EXIT(str)        ErrorF("wsfb: " str " done\n")
104# define TRACE(str)             ErrorF("wsfb trace: " str "\n")
105#else
106# define TRACE_ENTER(str)
107# define TRACE_EXIT(str)
108# define TRACE(str)
109#endif
110
111/* Prototypes */
112#ifdef XFree86LOADER
113static pointer WsfbSetup(pointer, pointer, int *, int *);
114#endif
115static Bool WsfbGetRec(ScrnInfoPtr);
116static void WsfbFreeRec(ScrnInfoPtr);
117static const OptionInfoRec * WsfbAvailableOptions(int, int);
118static void WsfbIdentify(int);
119static Bool WsfbProbe(DriverPtr, int);
120static Bool WsfbPreInit(ScrnInfoPtr, int);
121static Bool WsfbScreenInit(int, ScreenPtr, int, char **);
122static Bool WsfbCloseScreen(int, ScreenPtr);
123static void *WsfbWindowLinear(ScreenPtr, CARD32, CARD32, int, CARD32 *,
124			      void *);
125static void WsfbPointerMoved(int, int, int);
126static Bool WsfbEnterVT(int, int);
127static void WsfbLeaveVT(int, int);
128static Bool WsfbSwitchMode(int, DisplayModePtr, int);
129static int WsfbValidMode(int, DisplayModePtr, Bool, int);
130static void WsfbLoadPalette(ScrnInfoPtr, int, int *, LOCO *, VisualPtr);
131static Bool WsfbSaveScreen(ScreenPtr, int);
132static void WsfbSave(ScrnInfoPtr);
133static void WsfbRestore(ScrnInfoPtr);
134
135/* DGA stuff */
136#ifdef XFreeXDGA
137static Bool WsfbDGAOpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
138				   int *, int *, int *);
139static Bool WsfbDGASetMode(ScrnInfoPtr, DGAModePtr);
140static void WsfbDGASetViewport(ScrnInfoPtr, int, int, int);
141static Bool WsfbDGAInit(ScrnInfoPtr, ScreenPtr);
142#endif
143static Bool WsfbDriverFunc(ScrnInfoPtr pScrn, xorgDriverFuncOp op,
144				pointer ptr);
145
146/* Helper functions */
147static int wsfb_open(char *);
148static pointer wsfb_mmap(size_t, off_t, int);
149
150enum { WSFB_ROTATE_NONE = 0,
151       WSFB_ROTATE_CCW = 90,
152       WSFB_ROTATE_UD = 180,
153       WSFB_ROTATE_CW = 270
154};
155
156/*
157 * This is intentionally screen-independent.
158 * It indicates the binding choice made in the first PreInit.
159 */
160static int pix24bpp = 0;
161
162#define WSFB_VERSION 		4000
163#define WSFB_NAME		"wsfb"
164#define WSFB_DRIVER_NAME	"wsfb"
165
166_X_EXPORT DriverRec WSFB = {
167	WSFB_VERSION,
168	WSFB_DRIVER_NAME,
169	WsfbIdentify,
170	WsfbProbe,
171	WsfbAvailableOptions,
172	NULL,
173	0,
174	WsfbDriverFunc
175};
176
177/* Supported "chipsets" */
178static SymTabRec WsfbChipsets[] = {
179	{ 0, "wsfb" },
180	{ -1, NULL }
181};
182
183/* Supported options */
184typedef enum {
185	OPTION_SHADOW_FB,
186	OPTION_ROTATE,
187	OPTION_HW_CURSOR,
188	OPTION_SW_CURSOR
189} WsfbOpts;
190
191static const OptionInfoRec WsfbOptions[] = {
192	{ OPTION_SHADOW_FB, "ShadowFB", OPTV_BOOLEAN, {0}, FALSE},
193	{ OPTION_ROTATE, "Rotate", OPTV_STRING, {0}, FALSE},
194	{ -1, NULL, OPTV_NONE, {0}, FALSE}
195};
196
197/* Symbols needed from other modules */
198static const char *fbSymbols[] = {
199	"fbPictureInit",
200	"fbScreenInit",
201	NULL
202};
203static const char *shadowSymbols[] = {
204	"shadowAdd",
205	"shadowSetup",
206	"shadowUpdatePacked",
207	"shadowUpdatePackedWeak",
208	"shadowUpdateRotatePacked",
209	"shadowUpdateRotatePackedWeak",
210	NULL
211};
212
213static const char *ramdacSymbols[] = {
214	"xf86CreateCursorInfoRec",
215	"xf86DestroyCursorInfoRec",
216	"xf86InitCursor",
217	NULL
218};
219
220#ifdef XFree86LOADER
221static XF86ModuleVersionInfo WsfbVersRec = {
222	"wsfb",
223	MODULEVENDORSTRING,
224	MODINFOSTRING1,
225	MODINFOSTRING2,
226	XORG_VERSION_CURRENT,
227	PACKAGE_VERSION_MAJOR,
228	PACKAGE_VERSION_MINOR,
229	PACKAGE_VERSION_PATCHLEVEL,
230	ABI_CLASS_VIDEODRV,
231	ABI_VIDEODRV_VERSION,
232	NULL,
233	{0, 0, 0, 0}
234};
235
236_X_EXPORT XF86ModuleData wsfbModuleData = { &WsfbVersRec, WsfbSetup, NULL };
237
238static pointer
239WsfbSetup(pointer module, pointer opts, int *errmaj, int *errmin)
240{
241	static Bool setupDone = FALSE;
242	const char *osname;
243
244	/* Check that we're being loaded on a OpenBSD or NetBSD system. */
245	LoaderGetOS(&osname, NULL, NULL, NULL);
246	if (!osname || (strcmp(osname, "openbsd") != 0 &&
247	                strcmp(osname, "netbsd") != 0)) {
248		if (errmaj)
249			*errmaj = LDR_BADOS;
250		if (errmin)
251			*errmin = 0;
252		return NULL;
253	}
254	if (!setupDone) {
255		setupDone = TRUE;
256		xf86AddDriver(&WSFB, module, HaveDriverFuncs);
257		LoaderRefSymLists(fbSymbols, shadowSymbols, ramdacSymbols,
258		    NULL);
259		return (pointer)1;
260	} else {
261		if (errmaj != NULL)
262			*errmaj = LDR_ONCEONLY;
263		return NULL;
264	}
265}
266#endif /* XFree86LOADER */
267
268static Bool
269WsfbGetRec(ScrnInfoPtr pScrn)
270{
271
272	if (pScrn->driverPrivate != NULL)
273		return TRUE;
274
275	pScrn->driverPrivate = xnfcalloc(sizeof(WsfbRec), 1);
276	return TRUE;
277}
278
279static void
280WsfbFreeRec(ScrnInfoPtr pScrn)
281{
282
283	if (pScrn->driverPrivate == NULL)
284		return;
285	xfree(pScrn->driverPrivate);
286	pScrn->driverPrivate = NULL;
287}
288
289static const OptionInfoRec *
290WsfbAvailableOptions(int chipid, int busid)
291{
292	return WsfbOptions;
293}
294
295static void
296WsfbIdentify(int flags)
297{
298	xf86PrintChipsets(WSFB_NAME, "driver for wsdisplay framebuffer",
299			  WsfbChipsets);
300}
301
302/* Open the framebuffer device. */
303static int
304wsfb_open(char *dev)
305{
306	int fd = -1;
307
308	/* Try argument from XF86Config first. */
309	if (dev == NULL || ((fd = priv_open_device(dev)) == -1)) {
310		/* Second: environment variable. */
311		dev = getenv("XDEVICE");
312		if (dev == NULL || ((fd = priv_open_device(dev)) == -1)) {
313			/* Last try: default device. */
314			dev = WSFB_DEFAULT_DEV;
315			if ((fd = priv_open_device(dev)) == -1) {
316				return -1;
317			}
318		}
319	}
320	return fd;
321}
322
323/* Map the framebuffer's memory. */
324static pointer
325wsfb_mmap(size_t len, off_t off, int fd)
326{
327	int pagemask, mapsize;
328	caddr_t addr;
329	pointer mapaddr;
330
331	pagemask = getpagesize() - 1;
332	mapsize = ((int) len + pagemask) & ~pagemask;
333	addr = 0;
334
335	/*
336	 * Try and make it private first, that way once we get it, an
337	 * interloper, e.g. another server, can't get this frame buffer,
338	 * and if another server already has it, this one won't.
339	 */
340	mapaddr = (pointer) mmap(addr, mapsize,
341				 PROT_READ | PROT_WRITE, MAP_SHARED,
342				 fd, off);
343	if (mapaddr == MAP_FAILED) {
344		mapaddr = NULL;
345	}
346#if DEBUG
347	ErrorF("mmap returns: addr %p len 0x%x\n", mapaddr, mapsize);
348#endif
349	return mapaddr;
350}
351
352static Bool
353WsfbProbe(DriverPtr drv, int flags)
354{
355	int i, fd, entity;
356       	GDevPtr *devSections;
357	int numDevSections;
358	char *dev;
359	Bool foundScreen = FALSE;
360
361	TRACE("probe start");
362
363	/* For now, just bail out for PROBE_DETECT. */
364	if (flags & PROBE_DETECT)
365		return FALSE;
366
367	if ((numDevSections = xf86MatchDevice(WSFB_DRIVER_NAME,
368					      &devSections)) <= 0)
369		return FALSE;
370
371	for (i = 0; i < numDevSections; i++) {
372		ScrnInfoPtr pScrn = NULL;
373
374		dev = xf86FindOptionValue(devSections[i]->options, "device");
375		if ((fd = wsfb_open(dev)) >= 0) {
376			entity = xf86ClaimFbSlot(drv, 0, devSections[i], TRUE);
377			pScrn = xf86ConfigFbEntity(NULL,0,entity,
378						   NULL,NULL,NULL,NULL);
379			if (pScrn != NULL) {
380				foundScreen = TRUE;
381				pScrn->driverVersion = WSFB_VERSION;
382				pScrn->driverName = WSFB_DRIVER_NAME;
383				pScrn->name = WSFB_NAME;
384				pScrn->Probe = WsfbProbe;
385				pScrn->PreInit = WsfbPreInit;
386				pScrn->ScreenInit = WsfbScreenInit;
387				pScrn->SwitchMode = WsfbSwitchMode;
388				pScrn->AdjustFrame = NULL;
389				pScrn->EnterVT = WsfbEnterVT;
390				pScrn->LeaveVT = WsfbLeaveVT;
391				pScrn->ValidMode = WsfbValidMode;
392
393				xf86DrvMsg(pScrn->scrnIndex, X_INFO,
394				    "using %s\n", dev != NULL ? dev :
395				    "default device");
396			}
397		}
398	}
399	xfree(devSections);
400	TRACE("probe done");
401	return foundScreen;
402}
403
404static Bool
405WsfbPreInit(ScrnInfoPtr pScrn, int flags)
406{
407	WsfbPtr fPtr;
408	int default_depth, wstype;
409	char *dev, *s;
410	char *mod = NULL;
411	const char *reqSym = NULL;
412	Gamma zeros = {0.0, 0.0, 0.0};
413	DisplayModePtr mode;
414	MessageType from;
415
416	if (flags & PROBE_DETECT) return FALSE;
417
418	TRACE_ENTER("PreInit");
419
420	if (pScrn->numEntities != 1) return FALSE;
421
422	pScrn->monitor = pScrn->confScreen->monitor;
423
424	WsfbGetRec(pScrn);
425	fPtr = WSFBPTR(pScrn);
426
427	fPtr->pEnt = xf86GetEntityInfo(pScrn->entityList[0]);
428
429#if GET_ABI_MAJOR(ABI_VIDEODRV_VERSION) < 6
430	pScrn->racMemFlags = RAC_FB | RAC_COLORMAP | RAC_CURSOR | RAC_VIEWPORT;
431	pScrn->racIoFlags = pScrn->racMemFlags;
432#endif
433
434	dev = xf86FindOptionValue(fPtr->pEnt->device->options, "device");
435	fPtr->fd = wsfb_open(dev);
436	if (fPtr->fd == -1) {
437		return FALSE;
438	}
439
440	if (ioctl(fPtr->fd, WSDISPLAYIO_GINFO, &fPtr->info) == -1) {
441		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
442			   "ioctl WSDISPLAY_GINFO: %s\n",
443			   strerror(errno));
444		return FALSE;
445	}
446	if (ioctl(fPtr->fd, WSDISPLAYIO_GTYPE, &wstype) == -1) {
447		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
448			   "ioctl WSDISPLAY_GTYPE: %s\n",
449			   strerror(errno));
450		return FALSE;
451	}
452	if (ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES, &fPtr->linebytes) == -1) {
453		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
454			   "ioctl WSDISPLAYIO_LINEBYTES: %s\n",
455			   strerror(errno));
456		return FALSE;
457	}
458	/*
459	 * Allocate room for saving the colormap.
460	 */
461	if (fPtr->info.cmsize != 0) {
462		fPtr->saved_cmap.red =
463		    (unsigned char *)xalloc(fPtr->info.cmsize);
464		if (fPtr->saved_cmap.red == NULL) {
465			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
466			    "Cannot malloc %d bytes\n", fPtr->info.cmsize);
467			return FALSE;
468		}
469		fPtr->saved_cmap.green =
470		    (unsigned char *)xalloc(fPtr->info.cmsize);
471		if (fPtr->saved_cmap.green == NULL) {
472			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
473			    "Cannot malloc %d bytes\n", fPtr->info.cmsize);
474			xfree(fPtr->saved_cmap.red);
475			return FALSE;
476		}
477		fPtr->saved_cmap.blue =
478		    (unsigned char *)xalloc(fPtr->info.cmsize);
479		if (fPtr->saved_cmap.blue == NULL) {
480			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
481			    "Cannot malloc %d bytes\n", fPtr->info.cmsize);
482			xfree(fPtr->saved_cmap.red);
483			xfree(fPtr->saved_cmap.green);
484			return FALSE;
485		}
486	}
487
488	/* Handle depth */
489	default_depth = fPtr->info.depth <= 24 ? fPtr->info.depth : 24;
490	if (!xf86SetDepthBpp(pScrn, default_depth, default_depth,
491		fPtr->info.depth,
492		fPtr->info.depth >= 24 ? Support24bppFb|Support32bppFb : 0))
493		return FALSE;
494
495	/* Check consistency. */
496	if (pScrn->bitsPerPixel != fPtr->info.depth) {
497		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
498		    "specified depth (%d) or bpp (%d) doesn't match "
499		    "framebuffer depth (%d)\n", pScrn->depth,
500		    pScrn->bitsPerPixel, fPtr->info.depth);
501		return FALSE;
502	}
503	xf86PrintDepthBpp(pScrn);
504
505	/* Get the depth24 pixmap format. */
506	if (pScrn->depth == 24 && pix24bpp == 0)
507		pix24bpp = xf86GetBppFromDepth(pScrn, 24);
508
509	/* Color weight */
510	if (pScrn->depth > 8) {
511		rgb zeros = { 0, 0, 0 }, masks;
512
513		if (wstype == WSDISPLAY_TYPE_SUN24 ||
514		    wstype == WSDISPLAY_TYPE_SUNCG12 ||
515		    wstype == WSDISPLAY_TYPE_SUNCG14 ||
516		    wstype == WSDISPLAY_TYPE_SUNTCX ||
517		    wstype == WSDISPLAY_TYPE_SUNFFB) {
518			masks.red = 0x0000ff;
519			masks.green = 0x00ff00;
520			masks.blue = 0xff0000;
521		} else {
522			masks.red = 0;
523			masks.green = 0;
524			masks.blue = 0;
525		}
526
527		if (!xf86SetWeight(pScrn, zeros, masks))
528			return FALSE;
529	}
530
531	/* Visual init */
532	if (!xf86SetDefaultVisual(pScrn, -1))
533		return FALSE;
534
535	/* We don't currently support DirectColor at > 8bpp . */
536	if (pScrn->depth > 8 && pScrn->defaultVisual != TrueColor) {
537		xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "Given default visual"
538			   " (%s) is not supported at depth %d\n",
539			   xf86GetVisualName(pScrn->defaultVisual),
540			   pScrn->depth);
541		return FALSE;
542	}
543
544	xf86SetGamma(pScrn,zeros);
545
546	pScrn->progClock = TRUE;
547	pScrn->rgbBits   = 8;
548	pScrn->chipset   = "wsfb";
549	pScrn->videoRam  = fPtr->linebytes * fPtr->info.height;
550
551	xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Vidmem: %dk\n",
552		   pScrn->videoRam/1024);
553
554	/* Handle options. */
555	xf86CollectOptions(pScrn, NULL);
556	if (!(fPtr->Options = xalloc(sizeof(WsfbOptions))))
557		return FALSE;
558	memcpy(fPtr->Options, WsfbOptions, sizeof(WsfbOptions));
559	xf86ProcessOptions(pScrn->scrnIndex, fPtr->pEnt->device->options,
560			   fPtr->Options);
561
562	/* Use shadow framebuffer by default, on depth >= 8 */
563	if (pScrn->depth >= 8)
564		fPtr->shadowFB = xf86ReturnOptValBool(fPtr->Options,
565						      OPTION_SHADOW_FB, TRUE);
566	else
567		if (xf86ReturnOptValBool(fPtr->Options,
568					 OPTION_SHADOW_FB, FALSE)) {
569			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
570				   "Shadow FB option ignored on depth < 8");
571		}
572
573	/* Rotation */
574	fPtr->rotate = WSFB_ROTATE_NONE;
575	if ((s = xf86GetOptValString(fPtr->Options, OPTION_ROTATE))) {
576		if (pScrn->depth >= 8) {
577			if (!xf86NameCmp(s, "CW")) {
578				fPtr->shadowFB = TRUE;
579				fPtr->rotate = WSFB_ROTATE_CW;
580				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
581				    "Rotating screen clockwise\n");
582			} else if (!xf86NameCmp(s, "CCW")) {
583				fPtr->shadowFB = TRUE;
584				fPtr->rotate = WSFB_ROTATE_CCW;
585				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
586				    "Rotating screen counter clockwise\n");
587			} else if (!xf86NameCmp(s, "UD")) {
588				fPtr->shadowFB = TRUE;
589				fPtr->rotate = WSFB_ROTATE_UD;
590				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
591				    "Rotating screen upside down\n");
592			} else {
593				xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
594				    "\"%s\" is not a valid value for Option "
595				    "\"Rotate\"\n", s);
596				xf86DrvMsg(pScrn->scrnIndex, X_INFO,
597				    "Valid options are \"CW\", \"CCW\","
598				    " or \"UD\"\n");
599			}
600		} else {
601			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
602			    "Option \"Rotate\" ignored on depth < 8");
603		}
604	}
605
606	/* Fake video mode struct. */
607	mode = (DisplayModePtr)xalloc(sizeof(DisplayModeRec));
608	mode->prev = mode;
609	mode->next = mode;
610	mode->name = "wsfb current mode";
611	mode->status = MODE_OK;
612	mode->type = M_T_BUILTIN;
613	mode->Clock = 0;
614	mode->HDisplay = fPtr->info.width;
615	mode->HSyncStart = 0;
616	mode->HSyncEnd = 0;
617	mode->HTotal = 0;
618	mode->HSkew = 0;
619	mode->VDisplay = fPtr->info.height;
620	mode->VSyncStart = 0;
621	mode->VSyncEnd = 0;
622	mode->VTotal = 0;
623	mode->VScan = 0;
624	mode->Flags = 0;
625	if (pScrn->modes != NULL) {
626		xf86DrvMsg(pScrn->scrnIndex, X_INFO,
627		   "Ignoring mode specification from screen section\n");
628	}
629	pScrn->currentMode = pScrn->modes = mode;
630	pScrn->virtualX = fPtr->info.width;
631	pScrn->virtualY = fPtr->info.height;
632	pScrn->displayWidth = pScrn->virtualX;
633
634	/* Set the display resolution. */
635	xf86SetDpi(pScrn, 0, 0);
636
637	from = X_DEFAULT;
638	fPtr->HWCursor = TRUE;
639	if (xf86GetOptValBool(fPtr->Options, OPTION_HW_CURSOR, &fPtr->HWCursor))
640		from = X_CONFIG;
641	if (xf86ReturnOptValBool(fPtr->Options, OPTION_SW_CURSOR, FALSE)) {
642		from = X_CONFIG;
643		fPtr->HWCursor = FALSE;
644	}
645	xf86DrvMsg(pScrn->scrnIndex, from, "Using %s cursor\n",
646		fPtr->HWCursor ? "HW" : "SW");
647
648	/* Load bpp-specific modules. */
649	switch(pScrn->bitsPerPixel) {
650#ifdef HAVE_XF1BPP
651	case 1:
652		mod = "xf1bpp";
653		reqSym = "xf1bppScreenInit";
654		break;
655#endif
656#ifdef HAVE_XF4BPP
657	case 4:
658		mod = "xf4bpp";
659		reqSym = "xf4bppScreenInit";
660		break;
661#endif
662	default:
663		mod = "fb";
664		break;
665	}
666
667
668	/* Load shadow if needed. */
669	if (fPtr->shadowFB) {
670		xf86DrvMsg(pScrn->scrnIndex, X_CONFIG,
671			   "Using \"Shadow Framebuffer\"\n");
672		if (xf86LoadSubModule(pScrn, "shadow") == NULL) {
673			WsfbFreeRec(pScrn);
674			return FALSE;
675		}
676	}
677
678	if (mod && xf86LoadSubModule(pScrn, mod) == NULL) {
679		WsfbFreeRec(pScrn);
680		return FALSE;
681	}
682
683	if (xf86LoadSubModule(pScrn, "ramdac") == NULL) {
684		WsfbFreeRec(pScrn);
685		return FALSE;
686        }
687
688	if (mod) {
689		if (reqSym) {
690			xf86LoaderReqSymbols(reqSym, NULL);
691		} else {
692			xf86LoaderReqSymLists(fbSymbols, NULL);
693		}
694	}
695	TRACE_EXIT("PreInit");
696	return TRUE;
697}
698
699static Bool
700WsfbCreateScreenResources(ScreenPtr pScreen)
701{
702	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
703	WsfbPtr fPtr = WSFBPTR(pScrn);
704	PixmapPtr pPixmap;
705	Bool ret;
706
707	pScreen->CreateScreenResources = fPtr->CreateScreenResources;
708	ret = pScreen->CreateScreenResources(pScreen);
709	pScreen->CreateScreenResources = WsfbCreateScreenResources;
710
711	if (!ret)
712		return FALSE;
713
714	pPixmap = pScreen->GetScreenPixmap(pScreen);
715
716	if (!shadowAdd(pScreen, pPixmap, fPtr->rotate ?
717		shadowUpdateRotatePackedWeak() : shadowUpdatePackedWeak(),
718		WsfbWindowLinear, fPtr->rotate, NULL)) {
719		return FALSE;
720	}
721	return TRUE;
722}
723
724
725static Bool
726WsfbShadowInit(ScreenPtr pScreen)
727{
728	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
729	WsfbPtr fPtr = WSFBPTR(pScrn);
730
731	if (!shadowSetup(pScreen))
732		return FALSE;
733	fPtr->CreateScreenResources = pScreen->CreateScreenResources;
734	pScreen->CreateScreenResources = WsfbCreateScreenResources;
735
736	return TRUE;
737}
738
739static Bool
740WsfbScreenInit(int scrnIndex, ScreenPtr pScreen, int argc, char **argv)
741{
742	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
743	WsfbPtr fPtr = WSFBPTR(pScrn);
744	VisualPtr visual;
745	int ret, flags, ncolors;
746	int wsmode = WSDISPLAYIO_MODE_DUMBFB;
747	size_t len;
748
749	TRACE_ENTER("WsfbScreenInit");
750#if DEBUG
751	ErrorF("\tbitsPerPixel=%d, depth=%d, defaultVisual=%s\n"
752	       "\tmask: %x,%x,%x, offset: %u,%u,%u\n",
753	       pScrn->bitsPerPixel,
754	       pScrn->depth,
755	       xf86GetVisualName(pScrn->defaultVisual),
756	       pScrn->mask.red,pScrn->mask.green,pScrn->mask.blue,
757	       pScrn->offset.red,pScrn->offset.green,pScrn->offset.blue);
758#endif
759	switch (fPtr->info.depth) {
760	case 1:
761	case 4:
762	case 8:
763		len = fPtr->linebytes*fPtr->info.height;
764		break;
765	case 16:
766		if (fPtr->linebytes == fPtr->info.width) {
767			len = fPtr->info.width*fPtr->info.height*sizeof(short);
768		} else {
769			len = fPtr->linebytes*fPtr->info.height;
770		}
771		break;
772	case 24:
773		if (fPtr->linebytes == fPtr->info.width) {
774			len = fPtr->info.width*fPtr->info.height*3;
775		} else {
776			len = fPtr->linebytes*fPtr->info.height;
777		}
778		break;
779	case 32:
780		if (fPtr->linebytes == fPtr->info.width) {
781			len = fPtr->info.width*fPtr->info.height*sizeof(int);
782		} else {
783			len = fPtr->linebytes*fPtr->info.height;
784		}
785		break;
786	default:
787		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
788			   "unsupported depth %d\n", fPtr->info.depth);
789		return FALSE;
790	}
791	/* Switch to graphics mode - required before mmap. */
792	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &wsmode) == -1) {
793		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
794			   "ioctl WSDISPLAYIO_SMODE: %s\n",
795			   strerror(errno));
796		return FALSE;
797	}
798	fPtr->fbmem = wsfb_mmap(len, 0, fPtr->fd);
799
800	if (fPtr->fbmem == NULL) {
801		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
802			   "wsfb_mmap: %s\n", strerror(errno));
803		return FALSE;
804	}
805	fPtr->fbmem_len = len;
806
807	WsfbSave(pScrn);
808	pScrn->vtSema = TRUE;
809
810	/* MI layer */
811	miClearVisualTypes();
812	if (pScrn->bitsPerPixel > 8) {
813		if (!miSetVisualTypes(pScrn->depth, TrueColorMask,
814				      pScrn->rgbBits, TrueColor))
815			return FALSE;
816	} else {
817		if (!miSetVisualTypes(pScrn->depth,
818				      miGetDefaultVisualMask(pScrn->depth),
819				      pScrn->rgbBits, pScrn->defaultVisual))
820			return FALSE;
821	}
822	if (!miSetPixmapDepths())
823		return FALSE;
824
825	if (fPtr->rotate == WSFB_ROTATE_CW
826	    || fPtr->rotate == WSFB_ROTATE_CCW) {
827		int tmp = pScrn->virtualX;
828		pScrn->virtualX = pScrn->displayWidth = pScrn->virtualY;
829		pScrn->virtualY = tmp;
830	}
831	if (fPtr->rotate && !fPtr->PointerMoved) {
832		fPtr->PointerMoved = pScrn->PointerMoved;
833		pScrn->PointerMoved = WsfbPointerMoved;
834	}
835
836	fPtr->fbstart = fPtr->fbmem;
837
838#if 0
839	if (fPtr->shadowFB) {
840		fPtr->shadow = xcalloc(1, pScrn->virtualX * pScrn->virtualY *
841		    pScrn->bitsPerPixel);
842
843		if (!fPtr->shadow) {
844			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
845			    "Failed to allocate shadow framebuffer\n");
846			return FALSE;
847		}
848	}
849#endif
850
851	switch (pScrn->bitsPerPixel) {
852	case 1:
853#ifdef HAVE_XF1BPP
854		ret = xf1bppScreenInit(pScreen, fPtr->fbstart,
855				       pScrn->virtualX, pScrn->virtualY,
856				       pScrn->xDpi, pScrn->yDpi,
857				       pScrn->displayWidth);
858		break;
859#endif
860	case 4:
861#ifdef HAVE_XF4BPP
862		ret = xf4bppScreenInit(pScreen, fPtr->fbstart,
863				       pScrn->virtualX, pScrn->virtualY,
864				       pScrn->xDpi, pScrn->yDpi,
865				       pScrn->displayWidth);
866		break;
867#endif
868	case 8:
869	case 16:
870	case 24:
871	case 32:
872		ret = fbScreenInit(pScreen,
873		    /*fPtr->shadowFB ? fPtr->shadow :*/ fPtr->fbstart,
874		    pScrn->virtualX, pScrn->virtualY,
875		    pScrn->xDpi, pScrn->yDpi,
876		    pScrn->displayWidth, pScrn->bitsPerPixel);
877		break;
878	default:
879		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
880			   "Unsupported bpp: %d", pScrn->bitsPerPixel);
881		return FALSE;
882	} /* case */
883
884	if (!ret)
885		return FALSE;
886
887	if (pScrn->bitsPerPixel > 8) {
888		/* Fixup RGB ordering. */
889		visual = pScreen->visuals + pScreen->numVisuals;
890		while (--visual >= pScreen->visuals) {
891			if ((visual->class | DynamicClass) == DirectColor) {
892				visual->offsetRed   = pScrn->offset.red;
893				visual->offsetGreen = pScrn->offset.green;
894				visual->offsetBlue  = pScrn->offset.blue;
895				visual->redMask     = pScrn->mask.red;
896				visual->greenMask   = pScrn->mask.green;
897				visual->blueMask    = pScrn->mask.blue;
898			}
899		}
900	}
901
902	if (pScrn->bitsPerPixel >= 8) {
903		if (!fbPictureInit(pScreen, NULL, 0))
904			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
905				   "RENDER extension initialisation failed.");
906	}
907	if (fPtr->shadowFB && !WsfbShadowInit(pScreen)) {
908		xf86DrvMsg(scrnIndex, X_ERROR,
909		    "shadow framebuffer initialization failed\n");
910		return FALSE;
911	}
912
913#ifdef XFreeXDGA
914	if (!fPtr->rotate)
915		WsfbDGAInit(pScrn, pScreen);
916	else
917		xf86DrvMsg(scrnIndex, X_INFO, "Rotated display, "
918		    "disabling DGA\n");
919#endif
920	if (fPtr->rotate) {
921		xf86DrvMsg(scrnIndex, X_INFO, "Enabling Driver Rotation, "
922		    "disabling RandR\n");
923		xf86DisableRandR();
924		if (pScrn->bitsPerPixel == 24)
925			xf86DrvMsg(scrnIndex, X_WARNING,
926			    "Rotation might be broken in 24 bpp\n");
927	}
928
929	xf86SetBlackWhitePixels(pScreen);
930	miInitializeBackingStore(pScreen);
931	xf86SetBackingStore(pScreen);
932
933	/* Software cursor. */
934	miDCInitialize(pScreen, xf86GetPointerScreenFuncs());
935
936	/* check for hardware cursor support */
937	if (fPtr->HWCursor)
938		WsfbSetupCursor(pScreen);
939
940	/*
941	 * Colormap
942	 *
943	 * Note that, even on less than 8 bit depth frame buffers, we
944	 * expect the colormap to be programmable with 8 bit values.
945	 * As of now, this is indeed the case on all OpenBSD supported
946	 * graphics hardware.
947	 */
948	if (!miCreateDefColormap(pScreen))
949		return FALSE;
950	flags = CMAP_RELOAD_ON_MODE_SWITCH;
951	ncolors = fPtr->info.cmsize;
952	/* On StaticGray visuals, fake a 256 entries colormap. */
953	if (ncolors == 0)
954		ncolors = 256;
955	if(!xf86HandleColormaps(pScreen, ncolors, 8, WsfbLoadPalette,
956				NULL, flags))
957		return FALSE;
958
959	pScreen->SaveScreen = WsfbSaveScreen;
960
961#ifdef XvExtension
962	{
963		XF86VideoAdaptorPtr *ptr;
964
965		int n = xf86XVListGenericAdaptors(pScrn,&ptr);
966		if (n) {
967			xf86XVScreenInit(pScreen,ptr,n);
968		}
969	}
970#endif
971
972	/* Wrap the current CloseScreen function. */
973	fPtr->CloseScreen = pScreen->CloseScreen;
974	pScreen->CloseScreen = WsfbCloseScreen;
975
976	TRACE_EXIT("WsfbScreenInit");
977	return TRUE;
978}
979
980static Bool
981WsfbCloseScreen(int scrnIndex, ScreenPtr pScreen)
982{
983	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
984	PixmapPtr pPixmap;
985	WsfbPtr fPtr = WSFBPTR(pScrn);
986
987
988	TRACE_ENTER("WsfbCloseScreen");
989
990	pPixmap = pScreen->GetScreenPixmap(pScreen);
991	shadowRemove(pScreen, pPixmap);
992
993	if (pScrn->vtSema) {
994		WsfbRestore(pScrn);
995		if (munmap(fPtr->fbmem, fPtr->fbmem_len) == -1) {
996			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
997				   "munmap: %s\n", strerror(errno));
998		}
999
1000		fPtr->fbmem = NULL;
1001	}
1002#ifdef XFreeXDGA
1003	if (fPtr->pDGAMode) {
1004		xfree(fPtr->pDGAMode);
1005		fPtr->pDGAMode = NULL;
1006		fPtr->nDGAMode = 0;
1007	}
1008#endif
1009	pScrn->vtSema = FALSE;
1010
1011	/* Unwrap CloseScreen. */
1012	pScreen->CloseScreen = fPtr->CloseScreen;
1013	TRACE_EXIT("WsfbCloseScreen");
1014	return (*pScreen->CloseScreen)(scrnIndex, pScreen);
1015}
1016
1017static void *
1018WsfbWindowLinear(ScreenPtr pScreen, CARD32 row, CARD32 offset, int mode,
1019		CARD32 *size, void *closure)
1020{
1021	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
1022	WsfbPtr fPtr = WSFBPTR(pScrn);
1023
1024	if (fPtr->linebytes)
1025		*size = fPtr->linebytes;
1026	else {
1027		if (ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES, size) == -1)
1028			return NULL;
1029		fPtr->linebytes = *size;
1030	}
1031	return ((CARD8 *)fPtr->fbmem + row *fPtr->linebytes + offset);
1032}
1033
1034static void
1035WsfbPointerMoved(int index, int x, int y)
1036{
1037    ScrnInfoPtr pScrn = xf86Screens[index];
1038    WsfbPtr fPtr = WSFBPTR(pScrn);
1039    int newX, newY;
1040
1041    switch (fPtr->rotate)
1042    {
1043    case WSFB_ROTATE_CW:
1044	/* 90 degrees CW rotation. */
1045	newX = pScrn->pScreen->height - y - 1;
1046	newY = x;
1047	break;
1048
1049    case WSFB_ROTATE_CCW:
1050	/* 90 degrees CCW rotation. */
1051	newX = y;
1052	newY = pScrn->pScreen->width - x - 1;
1053	break;
1054
1055    case WSFB_ROTATE_UD:
1056	/* 180 degrees UD rotation. */
1057	newX = pScrn->pScreen->width - x - 1;
1058	newY = pScrn->pScreen->height - y - 1;
1059	break;
1060
1061    default:
1062	/* No rotation. */
1063	newX = x;
1064	newY = y;
1065	break;
1066    }
1067
1068    /* Pass adjusted pointer coordinates to wrapped PointerMoved function. */
1069    (*fPtr->PointerMoved)(index, newX, newY);
1070}
1071
1072static Bool
1073WsfbEnterVT(int scrnIndex, int flags)
1074{
1075	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
1076
1077	TRACE_ENTER("EnterVT");
1078	pScrn->vtSema = TRUE;
1079	TRACE_EXIT("EnterVT");
1080	return TRUE;
1081}
1082
1083static void
1084WsfbLeaveVT(int scrnIndex, int flags)
1085{
1086#if DEBUG
1087	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
1088#endif
1089
1090	TRACE_ENTER("LeaveVT");
1091}
1092
1093static Bool
1094WsfbSwitchMode(int scrnIndex, DisplayModePtr mode, int flags)
1095{
1096#if DEBUG
1097	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
1098#endif
1099
1100	TRACE_ENTER("SwitchMode");
1101	/* Nothing else to do. */
1102	return TRUE;
1103}
1104
1105static int
1106WsfbValidMode(int scrnIndex, DisplayModePtr mode, Bool verbose, int flags)
1107{
1108#if DEBUG
1109	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
1110#endif
1111
1112	TRACE_ENTER("ValidMode");
1113	return MODE_OK;
1114}
1115
1116static void
1117WsfbLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices,
1118	       LOCO *colors, VisualPtr pVisual)
1119{
1120	WsfbPtr fPtr = WSFBPTR(pScrn);
1121	struct wsdisplay_cmap cmap;
1122	unsigned char red[256],green[256],blue[256];
1123	int i, indexMin=256, indexMax=0;
1124
1125	TRACE_ENTER("LoadPalette");
1126
1127	cmap.count   = 1;
1128	cmap.red   = red;
1129	cmap.green = green;
1130	cmap.blue  = blue;
1131
1132	if (numColors == 1) {
1133		/* Optimisation */
1134		cmap.index = indices[0];
1135		red[0]   = colors[indices[0]].red;
1136		green[0] = colors[indices[0]].green;
1137		blue[0]  = colors[indices[0]].blue;
1138		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
1139			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
1140	} else {
1141		/*
1142		 * Change all colors in 2 ioctls
1143		 * and limit the data to be transfered.
1144		 */
1145		for (i = 0; i < numColors; i++) {
1146			if (indices[i] < indexMin)
1147				indexMin = indices[i];
1148			if (indices[i] > indexMax)
1149				indexMax = indices[i];
1150		}
1151		cmap.index = indexMin;
1152		cmap.count = indexMax - indexMin + 1;
1153		cmap.red = &red[indexMin];
1154		cmap.green = &green[indexMin];
1155		cmap.blue = &blue[indexMin];
1156		/* Get current map. */
1157		if (ioctl(fPtr->fd, WSDISPLAYIO_GETCMAP, &cmap) == -1)
1158			ErrorF("ioctl FBIOGETCMAP: %s\n", strerror(errno));
1159		/* Change the colors that require updating. */
1160		for (i = 0; i < numColors; i++) {
1161			red[indices[i]]   = colors[indices[i]].red;
1162			green[indices[i]] = colors[indices[i]].green;
1163			blue[indices[i]]  = colors[indices[i]].blue;
1164		}
1165		/* Write the colormap back. */
1166		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
1167			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
1168	}
1169	TRACE_EXIT("LoadPalette");
1170}
1171
1172static Bool
1173WsfbSaveScreen(ScreenPtr pScreen, int mode)
1174{
1175	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
1176	WsfbPtr fPtr = WSFBPTR(pScrn);
1177	int state;
1178
1179	TRACE_ENTER("SaveScreen");
1180
1181	if (!pScrn->vtSema)
1182		return TRUE;
1183
1184	if (mode != SCREEN_SAVER_FORCER) {
1185		state = xf86IsUnblank(mode)?WSDISPLAYIO_VIDEO_ON:
1186		                            WSDISPLAYIO_VIDEO_OFF;
1187		ioctl(fPtr->fd,
1188		      WSDISPLAYIO_SVIDEO, &state);
1189	}
1190	TRACE_EXIT("SaveScreen");
1191	return TRUE;
1192}
1193
1194
1195static void
1196WsfbSave(ScrnInfoPtr pScrn)
1197{
1198	WsfbPtr fPtr = WSFBPTR(pScrn);
1199
1200	TRACE_ENTER("WsfbSave");
1201
1202	if (fPtr->info.cmsize == 0)
1203		return;
1204
1205	fPtr->saved_cmap.index = 0;
1206	fPtr->saved_cmap.count = fPtr->info.cmsize;
1207	if (ioctl(fPtr->fd, WSDISPLAYIO_GETCMAP,
1208		  &(fPtr->saved_cmap)) == -1) {
1209		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1210			   "error saving colormap %s\n", strerror(errno));
1211	}
1212	TRACE_EXIT("WsfbSave");
1213
1214}
1215
1216static void
1217WsfbRestore(ScrnInfoPtr pScrn)
1218{
1219	WsfbPtr fPtr = WSFBPTR(pScrn);
1220	int mode;
1221
1222	TRACE_ENTER("WsfbRestore");
1223
1224	if (fPtr->info.cmsize != 0) {
1225		/* reset colormap for text mode */
1226		if (ioctl(fPtr->fd, WSDISPLAYIO_PUTCMAP,
1227			  &(fPtr->saved_cmap)) == -1) {
1228			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1229				   "error restoring colormap %s\n",
1230				   strerror(errno));
1231		}
1232	}
1233
1234	/* Clear the screen. */
1235	memset(fPtr->fbmem, 0, fPtr->fbmem_len);
1236
1237	/* Restore the text mode. */
1238	mode = WSDISPLAYIO_MODE_EMUL;
1239	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &mode) == -1) {
1240		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1241			   "error setting text mode %s\n", strerror(errno));
1242	}
1243	TRACE_EXIT("WsfbRestore");
1244}
1245
1246#ifdef XFreeXDGA
1247/***********************************************************************
1248 * DGA stuff
1249 ***********************************************************************/
1250
1251static Bool
1252WsfbDGAOpenFramebuffer(ScrnInfoPtr pScrn, char **DeviceName,
1253		       unsigned char **ApertureBase, int *ApertureSize,
1254		       int *ApertureOffset, int *flags)
1255{
1256	*DeviceName = NULL;		/* No special device */
1257	*ApertureBase = (unsigned char *)(pScrn->memPhysBase);
1258	*ApertureSize = pScrn->videoRam;
1259	*ApertureOffset = pScrn->fbOffset;
1260	*flags = 0;
1261
1262	return TRUE;
1263}
1264
1265static Bool
1266WsfbDGASetMode(ScrnInfoPtr pScrn, DGAModePtr pDGAMode)
1267{
1268	DisplayModePtr pMode;
1269	int scrnIdx = pScrn->pScreen->myNum;
1270	int frameX0, frameY0;
1271
1272	if (pDGAMode) {
1273		pMode = pDGAMode->mode;
1274		frameX0 = frameY0 = 0;
1275	} else {
1276		if (!(pMode = pScrn->currentMode))
1277			return TRUE;
1278
1279		frameX0 = pScrn->frameX0;
1280		frameY0 = pScrn->frameY0;
1281	}
1282
1283	if (!(*pScrn->SwitchMode)(scrnIdx, pMode, 0))
1284		return FALSE;
1285	(*pScrn->AdjustFrame)(scrnIdx, frameX0, frameY0, 0);
1286
1287	return TRUE;
1288}
1289
1290static void
1291WsfbDGASetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
1292{
1293	(*pScrn->AdjustFrame)(pScrn->pScreen->myNum, x, y, flags);
1294}
1295
1296static int
1297WsfbDGAGetViewport(ScrnInfoPtr pScrn)
1298{
1299	return (0);
1300}
1301
1302static DGAFunctionRec WsfbDGAFunctions =
1303{
1304	WsfbDGAOpenFramebuffer,
1305	NULL,       /* CloseFramebuffer */
1306	WsfbDGASetMode,
1307	WsfbDGASetViewport,
1308	WsfbDGAGetViewport,
1309	NULL,       /* Sync */
1310	NULL,       /* FillRect */
1311	NULL,       /* BlitRect */
1312	NULL,       /* BlitTransRect */
1313};
1314
1315static void
1316WsfbDGAAddModes(ScrnInfoPtr pScrn)
1317{
1318	WsfbPtr fPtr = WSFBPTR(pScrn);
1319	DisplayModePtr pMode = pScrn->modes;
1320	DGAModePtr pDGAMode;
1321
1322	do {
1323		pDGAMode = xrealloc(fPtr->pDGAMode,
1324				    (fPtr->nDGAMode + 1) * sizeof(DGAModeRec));
1325		if (!pDGAMode)
1326			break;
1327
1328		fPtr->pDGAMode = pDGAMode;
1329		pDGAMode += fPtr->nDGAMode;
1330		(void)memset(pDGAMode, 0, sizeof(DGAModeRec));
1331
1332		++fPtr->nDGAMode;
1333		pDGAMode->mode = pMode;
1334		pDGAMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
1335		pDGAMode->byteOrder = pScrn->imageByteOrder;
1336		pDGAMode->depth = pScrn->depth;
1337		pDGAMode->bitsPerPixel = pScrn->bitsPerPixel;
1338		pDGAMode->red_mask = pScrn->mask.red;
1339		pDGAMode->green_mask = pScrn->mask.green;
1340		pDGAMode->blue_mask = pScrn->mask.blue;
1341		pDGAMode->visualClass = pScrn->bitsPerPixel > 8 ?
1342			TrueColor : PseudoColor;
1343		pDGAMode->xViewportStep = 1;
1344		pDGAMode->yViewportStep = 1;
1345		pDGAMode->viewportWidth = pMode->HDisplay;
1346		pDGAMode->viewportHeight = pMode->VDisplay;
1347
1348		if (fPtr->linebytes)
1349			pDGAMode->bytesPerScanline = fPtr->linebytes;
1350		else {
1351			ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES,
1352			      &fPtr->linebytes);
1353			pDGAMode->bytesPerScanline = fPtr->linebytes;
1354		}
1355
1356		pDGAMode->imageWidth = pMode->HDisplay;
1357		pDGAMode->imageHeight =  pMode->VDisplay;
1358		pDGAMode->pixmapWidth = pDGAMode->imageWidth;
1359		pDGAMode->pixmapHeight = pDGAMode->imageHeight;
1360		pDGAMode->maxViewportX = pScrn->virtualX -
1361			pDGAMode->viewportWidth;
1362		pDGAMode->maxViewportY = pScrn->virtualY -
1363			pDGAMode->viewportHeight;
1364
1365		pDGAMode->address = fPtr->fbstart;
1366
1367		pMode = pMode->next;
1368	} while (pMode != pScrn->modes);
1369}
1370
1371static Bool
1372WsfbDGAInit(ScrnInfoPtr pScrn, ScreenPtr pScreen)
1373{
1374	WsfbPtr fPtr = WSFBPTR(pScrn);
1375
1376	if (pScrn->depth < 8)
1377		return FALSE;
1378
1379	if (!fPtr->nDGAMode)
1380		WsfbDGAAddModes(pScrn);
1381
1382	return (DGAInit(pScreen, &WsfbDGAFunctions,
1383			fPtr->pDGAMode, fPtr->nDGAMode));
1384}
1385#endif
1386
1387static Bool
1388WsfbDriverFunc(ScrnInfoPtr pScrn, xorgDriverFuncOp op,
1389    pointer ptr)
1390{
1391	xorgHWFlags *flag;
1392
1393	switch (op) {
1394	case GET_REQUIRED_HW_INTERFACES:
1395		flag = (CARD32*)ptr;
1396		(*flag) = 0;
1397		return TRUE;
1398	default:
1399		return FALSE;
1400	}
1401}
1402
1403