wsfb_driver.c revision 64f08a18 
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 (fPtr->shadowFB) {
839		fPtr->shadow = xcalloc(1, pScrn->virtualX * pScrn->virtualY *
840		    pScrn->bitsPerPixel);
841
842		if (!fPtr->shadow) {
843			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
844			    "Failed to allocate shadow framebuffer\n");
845			return FALSE;
846		}
847	}
848
849	switch (pScrn->bitsPerPixel) {
850	case 1:
851#ifdef HAVE_XF1BPP
852		ret = xf1bppScreenInit(pScreen, fPtr->fbstart,
853				       pScrn->virtualX, pScrn->virtualY,
854				       pScrn->xDpi, pScrn->yDpi,
855				       pScrn->displayWidth);
856		break;
857#endif
858	case 4:
859#ifdef HAVE_XF4BPP
860		ret = xf4bppScreenInit(pScreen, fPtr->fbstart,
861				       pScrn->virtualX, pScrn->virtualY,
862				       pScrn->xDpi, pScrn->yDpi,
863				       pScrn->displayWidth);
864		break;
865#endif
866	case 8:
867	case 16:
868	case 24:
869	case 32:
870		ret = fbScreenInit(pScreen,
871		    /*fPtr->shadowFB ? fPtr->shadow :*/ fPtr->fbstart,
872		    pScrn->virtualX, pScrn->virtualY,
873		    pScrn->xDpi, pScrn->yDpi,
874		    pScrn->displayWidth, pScrn->bitsPerPixel);
875		break;
876	default:
877		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
878			   "Unsupported bpp: %d", pScrn->bitsPerPixel);
879		return FALSE;
880	} /* case */
881
882	if (!ret)
883		return FALSE;
884
885	if (pScrn->bitsPerPixel > 8) {
886		/* Fixup RGB ordering. */
887		visual = pScreen->visuals + pScreen->numVisuals;
888		while (--visual >= pScreen->visuals) {
889			if ((visual->class | DynamicClass) == DirectColor) {
890				visual->offsetRed   = pScrn->offset.red;
891				visual->offsetGreen = pScrn->offset.green;
892				visual->offsetBlue  = pScrn->offset.blue;
893				visual->redMask     = pScrn->mask.red;
894				visual->greenMask   = pScrn->mask.green;
895				visual->blueMask    = pScrn->mask.blue;
896			}
897		}
898	}
899
900	if (pScrn->bitsPerPixel >= 8) {
901		if (!fbPictureInit(pScreen, NULL, 0))
902			xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
903				   "RENDER extension initialisation failed.");
904	}
905	if (fPtr->shadowFB && !WsfbShadowInit(pScreen)) {
906		xf86DrvMsg(scrnIndex, X_ERROR,
907		    "shadow framebuffer initialization failed\n");
908		return FALSE;
909	}
910
911#ifdef XFreeXDGA
912	if (!fPtr->rotate)
913		WsfbDGAInit(pScrn, pScreen);
914	else
915		xf86DrvMsg(scrnIndex, X_INFO, "Rotated display, "
916		    "disabling DGA\n");
917#endif
918	if (fPtr->rotate) {
919		xf86DrvMsg(scrnIndex, X_INFO, "Enabling Driver Rotation, "
920		    "disabling RandR\n");
921		xf86DisableRandR();
922		if (pScrn->bitsPerPixel == 24)
923			xf86DrvMsg(scrnIndex, X_WARNING,
924			    "Rotation might be broken in 24 bpp\n");
925	}
926
927	xf86SetBlackWhitePixels(pScreen);
928	miInitializeBackingStore(pScreen);
929	xf86SetBackingStore(pScreen);
930
931	/* Software cursor. */
932	miDCInitialize(pScreen, xf86GetPointerScreenFuncs());
933
934	/* check for hardware cursor support */
935	if (fPtr->HWCursor)
936		WsfbSetupCursor(pScreen);
937
938	/*
939	 * Colormap
940	 *
941	 * Note that, even on less than 8 bit depth frame buffers, we
942	 * expect the colormap to be programmable with 8 bit values.
943	 * As of now, this is indeed the case on all OpenBSD supported
944	 * graphics hardware.
945	 */
946	if (!miCreateDefColormap(pScreen))
947		return FALSE;
948	flags = CMAP_RELOAD_ON_MODE_SWITCH;
949	ncolors = fPtr->info.cmsize;
950	/* On StaticGray visuals, fake a 256 entries colormap. */
951	if (ncolors == 0)
952		ncolors = 256;
953	if(!xf86HandleColormaps(pScreen, ncolors, 8, WsfbLoadPalette,
954				NULL, flags))
955		return FALSE;
956
957	pScreen->SaveScreen = WsfbSaveScreen;
958
959#ifdef XvExtension
960	{
961		XF86VideoAdaptorPtr *ptr;
962
963		int n = xf86XVListGenericAdaptors(pScrn,&ptr);
964		if (n) {
965			xf86XVScreenInit(pScreen,ptr,n);
966		}
967	}
968#endif
969
970	/* Wrap the current CloseScreen function. */
971	fPtr->CloseScreen = pScreen->CloseScreen;
972	pScreen->CloseScreen = WsfbCloseScreen;
973
974	TRACE_EXIT("WsfbScreenInit");
975	return TRUE;
976}
977
978static Bool
979WsfbCloseScreen(int scrnIndex, ScreenPtr pScreen)
980{
981	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
982	PixmapPtr pPixmap;
983	WsfbPtr fPtr = WSFBPTR(pScrn);
984
985
986	TRACE_ENTER("WsfbCloseScreen");
987
988	pPixmap = pScreen->GetScreenPixmap(pScreen);
989	shadowRemove(pScreen, pPixmap);
990
991	if (pScrn->vtSema) {
992		WsfbRestore(pScrn);
993		if (munmap(fPtr->fbmem, fPtr->fbmem_len) == -1) {
994			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
995				   "munmap: %s\n", strerror(errno));
996		}
997
998		fPtr->fbmem = NULL;
999	}
1000#ifdef XFreeXDGA
1001	if (fPtr->pDGAMode) {
1002		xfree(fPtr->pDGAMode);
1003		fPtr->pDGAMode = NULL;
1004		fPtr->nDGAMode = 0;
1005	}
1006#endif
1007	pScrn->vtSema = FALSE;
1008
1009	/* Unwrap CloseScreen. */
1010	pScreen->CloseScreen = fPtr->CloseScreen;
1011	TRACE_EXIT("WsfbCloseScreen");
1012	return (*pScreen->CloseScreen)(scrnIndex, pScreen);
1013}
1014
1015static void *
1016WsfbWindowLinear(ScreenPtr pScreen, CARD32 row, CARD32 offset, int mode,
1017		CARD32 *size, void *closure)
1018{
1019	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
1020	WsfbPtr fPtr = WSFBPTR(pScrn);
1021
1022	if (fPtr->linebytes)
1023		*size = fPtr->linebytes;
1024	else {
1025		if (ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES, size) == -1)
1026			return NULL;
1027		fPtr->linebytes = *size;
1028	}
1029	return ((CARD8 *)fPtr->fbmem + row *fPtr->linebytes + offset);
1030}
1031
1032static void
1033WsfbPointerMoved(int index, int x, int y)
1034{
1035    ScrnInfoPtr pScrn = xf86Screens[index];
1036    WsfbPtr fPtr = WSFBPTR(pScrn);
1037    int newX, newY;
1038
1039    switch (fPtr->rotate)
1040    {
1041    case WSFB_ROTATE_CW:
1042	/* 90 degrees CW rotation. */
1043	newX = pScrn->pScreen->height - y - 1;
1044	newY = x;
1045	break;
1046
1047    case WSFB_ROTATE_CCW:
1048	/* 90 degrees CCW rotation. */
1049	newX = y;
1050	newY = pScrn->pScreen->width - x - 1;
1051	break;
1052
1053    case WSFB_ROTATE_UD:
1054	/* 180 degrees UD rotation. */
1055	newX = pScrn->pScreen->width - x - 1;
1056	newY = pScrn->pScreen->height - y - 1;
1057	break;
1058
1059    default:
1060	/* No rotation. */
1061	newX = x;
1062	newY = y;
1063	break;
1064    }
1065
1066    /* Pass adjusted pointer coordinates to wrapped PointerMoved function. */
1067    (*fPtr->PointerMoved)(index, newX, newY);
1068}
1069
1070static Bool
1071WsfbEnterVT(int scrnIndex, int flags)
1072{
1073	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
1074
1075	TRACE_ENTER("EnterVT");
1076	pScrn->vtSema = TRUE;
1077	TRACE_EXIT("EnterVT");
1078	return TRUE;
1079}
1080
1081static void
1082WsfbLeaveVT(int scrnIndex, int flags)
1083{
1084#if DEBUG
1085	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
1086#endif
1087
1088	TRACE_ENTER("LeaveVT");
1089}
1090
1091static Bool
1092WsfbSwitchMode(int scrnIndex, DisplayModePtr mode, int flags)
1093{
1094#if DEBUG
1095	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
1096#endif
1097
1098	TRACE_ENTER("SwitchMode");
1099	/* Nothing else to do. */
1100	return TRUE;
1101}
1102
1103static int
1104WsfbValidMode(int scrnIndex, DisplayModePtr mode, Bool verbose, int flags)
1105{
1106#if DEBUG
1107	ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
1108#endif
1109
1110	TRACE_ENTER("ValidMode");
1111	return MODE_OK;
1112}
1113
1114static void
1115WsfbLoadPalette(ScrnInfoPtr pScrn, int numColors, int *indices,
1116	       LOCO *colors, VisualPtr pVisual)
1117{
1118	WsfbPtr fPtr = WSFBPTR(pScrn);
1119	struct wsdisplay_cmap cmap;
1120	unsigned char red[256],green[256],blue[256];
1121	int i, indexMin=256, indexMax=0;
1122
1123	TRACE_ENTER("LoadPalette");
1124
1125	cmap.count   = 1;
1126	cmap.red   = red;
1127	cmap.green = green;
1128	cmap.blue  = blue;
1129
1130	if (numColors == 1) {
1131		/* Optimisation */
1132		cmap.index = indices[0];
1133		red[0]   = colors[indices[0]].red;
1134		green[0] = colors[indices[0]].green;
1135		blue[0]  = colors[indices[0]].blue;
1136		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
1137			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
1138	} else {
1139		/*
1140		 * Change all colors in 2 ioctls
1141		 * and limit the data to be transfered.
1142		 */
1143		for (i = 0; i < numColors; i++) {
1144			if (indices[i] < indexMin)
1145				indexMin = indices[i];
1146			if (indices[i] > indexMax)
1147				indexMax = indices[i];
1148		}
1149		cmap.index = indexMin;
1150		cmap.count = indexMax - indexMin + 1;
1151		cmap.red = &red[indexMin];
1152		cmap.green = &green[indexMin];
1153		cmap.blue = &blue[indexMin];
1154		/* Get current map. */
1155		if (ioctl(fPtr->fd, WSDISPLAYIO_GETCMAP, &cmap) == -1)
1156			ErrorF("ioctl FBIOGETCMAP: %s\n", strerror(errno));
1157		/* Change the colors that require updating. */
1158		for (i = 0; i < numColors; i++) {
1159			red[indices[i]]   = colors[indices[i]].red;
1160			green[indices[i]] = colors[indices[i]].green;
1161			blue[indices[i]]  = colors[indices[i]].blue;
1162		}
1163		/* Write the colormap back. */
1164		if (ioctl(fPtr->fd,WSDISPLAYIO_PUTCMAP, &cmap) == -1)
1165			ErrorF("ioctl FBIOPUTCMAP: %s\n", strerror(errno));
1166	}
1167	TRACE_EXIT("LoadPalette");
1168}
1169
1170static Bool
1171WsfbSaveScreen(ScreenPtr pScreen, int mode)
1172{
1173	ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
1174	WsfbPtr fPtr = WSFBPTR(pScrn);
1175	int state;
1176
1177	TRACE_ENTER("SaveScreen");
1178
1179	if (!pScrn->vtSema)
1180		return TRUE;
1181
1182	if (mode != SCREEN_SAVER_FORCER) {
1183		state = xf86IsUnblank(mode)?WSDISPLAYIO_VIDEO_ON:
1184		                            WSDISPLAYIO_VIDEO_OFF;
1185		ioctl(fPtr->fd,
1186		      WSDISPLAYIO_SVIDEO, &state);
1187	}
1188	TRACE_EXIT("SaveScreen");
1189	return TRUE;
1190}
1191
1192
1193static void
1194WsfbSave(ScrnInfoPtr pScrn)
1195{
1196	WsfbPtr fPtr = WSFBPTR(pScrn);
1197
1198	TRACE_ENTER("WsfbSave");
1199
1200	if (fPtr->info.cmsize == 0)
1201		return;
1202
1203	fPtr->saved_cmap.index = 0;
1204	fPtr->saved_cmap.count = fPtr->info.cmsize;
1205	if (ioctl(fPtr->fd, WSDISPLAYIO_GETCMAP,
1206		  &(fPtr->saved_cmap)) == -1) {
1207		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1208			   "error saving colormap %s\n", strerror(errno));
1209	}
1210	TRACE_EXIT("WsfbSave");
1211
1212}
1213
1214static void
1215WsfbRestore(ScrnInfoPtr pScrn)
1216{
1217	WsfbPtr fPtr = WSFBPTR(pScrn);
1218	int mode;
1219
1220	TRACE_ENTER("WsfbRestore");
1221
1222	if (fPtr->info.cmsize != 0) {
1223		/* reset colormap for text mode */
1224		if (ioctl(fPtr->fd, WSDISPLAYIO_PUTCMAP,
1225			  &(fPtr->saved_cmap)) == -1) {
1226			xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1227				   "error restoring colormap %s\n",
1228				   strerror(errno));
1229		}
1230	}
1231
1232	/* Clear the screen. */
1233	memset(fPtr->fbmem, 0, fPtr->fbmem_len);
1234
1235	/* Restore the text mode. */
1236	mode = WSDISPLAYIO_MODE_EMUL;
1237	if (ioctl(fPtr->fd, WSDISPLAYIO_SMODE, &mode) == -1) {
1238		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
1239			   "error setting text mode %s\n", strerror(errno));
1240	}
1241	TRACE_EXIT("WsfbRestore");
1242}
1243
1244#ifdef XFreeXDGA
1245/***********************************************************************
1246 * DGA stuff
1247 ***********************************************************************/
1248
1249static Bool
1250WsfbDGAOpenFramebuffer(ScrnInfoPtr pScrn, char **DeviceName,
1251		       unsigned char **ApertureBase, int *ApertureSize,
1252		       int *ApertureOffset, int *flags)
1253{
1254	*DeviceName = NULL;		/* No special device */
1255	*ApertureBase = (unsigned char *)(pScrn->memPhysBase);
1256	*ApertureSize = pScrn->videoRam;
1257	*ApertureOffset = pScrn->fbOffset;
1258	*flags = 0;
1259
1260	return TRUE;
1261}
1262
1263static Bool
1264WsfbDGASetMode(ScrnInfoPtr pScrn, DGAModePtr pDGAMode)
1265{
1266	DisplayModePtr pMode;
1267	int scrnIdx = pScrn->pScreen->myNum;
1268	int frameX0, frameY0;
1269
1270	if (pDGAMode) {
1271		pMode = pDGAMode->mode;
1272		frameX0 = frameY0 = 0;
1273	} else {
1274		if (!(pMode = pScrn->currentMode))
1275			return TRUE;
1276
1277		frameX0 = pScrn->frameX0;
1278		frameY0 = pScrn->frameY0;
1279	}
1280
1281	if (!(*pScrn->SwitchMode)(scrnIdx, pMode, 0))
1282		return FALSE;
1283	(*pScrn->AdjustFrame)(scrnIdx, frameX0, frameY0, 0);
1284
1285	return TRUE;
1286}
1287
1288static void
1289WsfbDGASetViewport(ScrnInfoPtr pScrn, int x, int y, int flags)
1290{
1291	(*pScrn->AdjustFrame)(pScrn->pScreen->myNum, x, y, flags);
1292}
1293
1294static int
1295WsfbDGAGetViewport(ScrnInfoPtr pScrn)
1296{
1297	return (0);
1298}
1299
1300static DGAFunctionRec WsfbDGAFunctions =
1301{
1302	WsfbDGAOpenFramebuffer,
1303	NULL,       /* CloseFramebuffer */
1304	WsfbDGASetMode,
1305	WsfbDGASetViewport,
1306	WsfbDGAGetViewport,
1307	NULL,       /* Sync */
1308	NULL,       /* FillRect */
1309	NULL,       /* BlitRect */
1310	NULL,       /* BlitTransRect */
1311};
1312
1313static void
1314WsfbDGAAddModes(ScrnInfoPtr pScrn)
1315{
1316	WsfbPtr fPtr = WSFBPTR(pScrn);
1317	DisplayModePtr pMode = pScrn->modes;
1318	DGAModePtr pDGAMode;
1319
1320	do {
1321		pDGAMode = xrealloc(fPtr->pDGAMode,
1322				    (fPtr->nDGAMode + 1) * sizeof(DGAModeRec));
1323		if (!pDGAMode)
1324			break;
1325
1326		fPtr->pDGAMode = pDGAMode;
1327		pDGAMode += fPtr->nDGAMode;
1328		(void)memset(pDGAMode, 0, sizeof(DGAModeRec));
1329
1330		++fPtr->nDGAMode;
1331		pDGAMode->mode = pMode;
1332		pDGAMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
1333		pDGAMode->byteOrder = pScrn->imageByteOrder;
1334		pDGAMode->depth = pScrn->depth;
1335		pDGAMode->bitsPerPixel = pScrn->bitsPerPixel;
1336		pDGAMode->red_mask = pScrn->mask.red;
1337		pDGAMode->green_mask = pScrn->mask.green;
1338		pDGAMode->blue_mask = pScrn->mask.blue;
1339		pDGAMode->visualClass = pScrn->bitsPerPixel > 8 ?
1340			TrueColor : PseudoColor;
1341		pDGAMode->xViewportStep = 1;
1342		pDGAMode->yViewportStep = 1;
1343		pDGAMode->viewportWidth = pMode->HDisplay;
1344		pDGAMode->viewportHeight = pMode->VDisplay;
1345
1346		if (fPtr->linebytes)
1347			pDGAMode->bytesPerScanline = fPtr->linebytes;
1348		else {
1349			ioctl(fPtr->fd, WSDISPLAYIO_LINEBYTES,
1350			      &fPtr->linebytes);
1351			pDGAMode->bytesPerScanline = fPtr->linebytes;
1352		}
1353
1354		pDGAMode->imageWidth = pMode->HDisplay;
1355		pDGAMode->imageHeight =  pMode->VDisplay;
1356		pDGAMode->pixmapWidth = pDGAMode->imageWidth;
1357		pDGAMode->pixmapHeight = pDGAMode->imageHeight;
1358		pDGAMode->maxViewportX = pScrn->virtualX -
1359			pDGAMode->viewportWidth;
1360		pDGAMode->maxViewportY = pScrn->virtualY -
1361			pDGAMode->viewportHeight;
1362
1363		pDGAMode->address = fPtr->fbstart;
1364
1365		pMode = pMode->next;
1366	} while (pMode != pScrn->modes);
1367}
1368
1369static Bool
1370WsfbDGAInit(ScrnInfoPtr pScrn, ScreenPtr pScreen)
1371{
1372	WsfbPtr fPtr = WSFBPTR(pScrn);
1373
1374	if (pScrn->depth < 8)
1375		return FALSE;
1376
1377	if (!fPtr->nDGAMode)
1378		WsfbDGAAddModes(pScrn);
1379
1380	return (DGAInit(pScreen, &WsfbDGAFunctions,
1381			fPtr->pDGAMode, fPtr->nDGAMode));
1382}
1383#endif
1384
1385static Bool
1386WsfbDriverFunc(ScrnInfoPtr pScrn, xorgDriverFuncOp op,
1387    pointer ptr)
1388{
1389	xorgHWFlags *flag;
1390
1391	switch (op) {
1392	case GET_REQUIRED_HW_INTERFACES:
1393		flag = (CARD32*)ptr;
1394		(*flag) = 0;
1395		return TRUE;
1396	default:
1397		return FALSE;
1398	}
1399}
1400
1401